2 * thinkpad_acpi.c - ThinkPad ACPI Extras
5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
24 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
26 #define TPACPI_VERSION "0.25"
27 #define TPACPI_SYSFS_VERSION 0x020700
31 * 2007-10-20 changelog trimmed down
33 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
36 * 2006-11-22 0.13 new maintainer
37 * changelog now lives in git commit history, and will
38 * not be updated further in-file.
40 * 2005-03-17 0.11 support for 600e, 770x
41 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
43 * 2005-01-16 0.9 use MODULE_VERSION
44 * thanks to Henrik Brix Andersen <brix@gentoo.org>
45 * fix parameter passing on module loading
46 * thanks to Rusty Russell <rusty@rustcorp.com.au>
47 * thanks to Jim Radford <radford@blackbean.org>
48 * 2004-11-08 0.8 fix init error case, don't return from a macro
49 * thanks to Chris Wright <chrisw@osdl.org>
52 #include <linux/kernel.h>
53 #include <linux/module.h>
54 #include <linux/init.h>
55 #include <linux/types.h>
56 #include <linux/string.h>
57 #include <linux/list.h>
58 #include <linux/mutex.h>
59 #include <linux/sched.h>
60 #include <linux/kthread.h>
61 #include <linux/freezer.h>
62 #include <linux/delay.h>
63 #include <linux/slab.h>
65 #include <linux/nvram.h>
66 #include <linux/proc_fs.h>
67 #include <linux/seq_file.h>
68 #include <linux/sysfs.h>
69 #include <linux/backlight.h>
71 #include <linux/platform_device.h>
72 #include <linux/hwmon.h>
73 #include <linux/hwmon-sysfs.h>
74 #include <linux/input.h>
75 #include <linux/leds.h>
76 #include <linux/rfkill.h>
77 #include <asm/uaccess.h>
79 #include <linux/dmi.h>
80 #include <linux/jiffies.h>
81 #include <linux/workqueue.h>
83 #include <sound/core.h>
84 #include <sound/control.h>
85 #include <sound/initval.h>
87 #include <acpi/acpi_drivers.h>
89 #include <linux/pci_ids.h>
91 #include <linux/thinkpad_acpi.h>
93 /* ThinkPad CMOS commands */
94 #define TP_CMOS_VOLUME_DOWN 0
95 #define TP_CMOS_VOLUME_UP 1
96 #define TP_CMOS_VOLUME_MUTE 2
97 #define TP_CMOS_BRIGHTNESS_UP 4
98 #define TP_CMOS_BRIGHTNESS_DOWN 5
99 #define TP_CMOS_THINKLIGHT_ON 12
100 #define TP_CMOS_THINKLIGHT_OFF 13
102 /* NVRAM Addresses */
104 TP_NVRAM_ADDR_HK2
= 0x57,
105 TP_NVRAM_ADDR_THINKLIGHT
= 0x58,
106 TP_NVRAM_ADDR_VIDEO
= 0x59,
107 TP_NVRAM_ADDR_BRIGHTNESS
= 0x5e,
108 TP_NVRAM_ADDR_MIXER
= 0x60,
111 /* NVRAM bit masks */
113 TP_NVRAM_MASK_HKT_THINKPAD
= 0x08,
114 TP_NVRAM_MASK_HKT_ZOOM
= 0x20,
115 TP_NVRAM_MASK_HKT_DISPLAY
= 0x40,
116 TP_NVRAM_MASK_HKT_HIBERNATE
= 0x80,
117 TP_NVRAM_MASK_THINKLIGHT
= 0x10,
118 TP_NVRAM_MASK_HKT_DISPEXPND
= 0x30,
119 TP_NVRAM_MASK_HKT_BRIGHTNESS
= 0x20,
120 TP_NVRAM_MASK_LEVEL_BRIGHTNESS
= 0x0f,
121 TP_NVRAM_POS_LEVEL_BRIGHTNESS
= 0,
122 TP_NVRAM_MASK_MUTE
= 0x40,
123 TP_NVRAM_MASK_HKT_VOLUME
= 0x80,
124 TP_NVRAM_MASK_LEVEL_VOLUME
= 0x0f,
125 TP_NVRAM_POS_LEVEL_VOLUME
= 0,
128 /* Misc NVRAM-related */
130 TP_NVRAM_LEVEL_VOLUME_MAX
= 14,
134 #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068"
135 #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068"
136 #define TPACPI_ACPI_EC_HID "PNP0C09"
139 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
140 #define TPACPI_HKEY_INPUT_VERSION 0x4101
142 /* ACPI \WGSV commands */
144 TP_ACPI_WGSV_GET_STATE
= 0x01, /* Get state information */
145 TP_ACPI_WGSV_PWR_ON_ON_RESUME
= 0x02, /* Resume WWAN powered on */
146 TP_ACPI_WGSV_PWR_OFF_ON_RESUME
= 0x03, /* Resume WWAN powered off */
147 TP_ACPI_WGSV_SAVE_STATE
= 0x04, /* Save state for S4/S5 */
150 /* TP_ACPI_WGSV_GET_STATE bits */
152 TP_ACPI_WGSV_STATE_WWANEXIST
= 0x0001, /* WWAN hw available */
153 TP_ACPI_WGSV_STATE_WWANPWR
= 0x0002, /* WWAN radio enabled */
154 TP_ACPI_WGSV_STATE_WWANPWRRES
= 0x0004, /* WWAN state at resume */
155 TP_ACPI_WGSV_STATE_WWANBIOSOFF
= 0x0008, /* WWAN disabled in BIOS */
156 TP_ACPI_WGSV_STATE_BLTHEXIST
= 0x0001, /* BLTH hw available */
157 TP_ACPI_WGSV_STATE_BLTHPWR
= 0x0002, /* BLTH radio enabled */
158 TP_ACPI_WGSV_STATE_BLTHPWRRES
= 0x0004, /* BLTH state at resume */
159 TP_ACPI_WGSV_STATE_BLTHBIOSOFF
= 0x0008, /* BLTH disabled in BIOS */
160 TP_ACPI_WGSV_STATE_UWBEXIST
= 0x0010, /* UWB hw available */
161 TP_ACPI_WGSV_STATE_UWBPWR
= 0x0020, /* UWB radio enabled */
165 enum tpacpi_hkey_event_t
{
167 TP_HKEY_EV_HOTKEY_BASE
= 0x1001, /* first hotkey (FN+F1) */
168 TP_HKEY_EV_BRGHT_UP
= 0x1010, /* Brightness up */
169 TP_HKEY_EV_BRGHT_DOWN
= 0x1011, /* Brightness down */
170 TP_HKEY_EV_VOL_UP
= 0x1015, /* Volume up or unmute */
171 TP_HKEY_EV_VOL_DOWN
= 0x1016, /* Volume down or unmute */
172 TP_HKEY_EV_VOL_MUTE
= 0x1017, /* Mixer output mute */
174 /* Reasons for waking up from S3/S4 */
175 TP_HKEY_EV_WKUP_S3_UNDOCK
= 0x2304, /* undock requested, S3 */
176 TP_HKEY_EV_WKUP_S4_UNDOCK
= 0x2404, /* undock requested, S4 */
177 TP_HKEY_EV_WKUP_S3_BAYEJ
= 0x2305, /* bay ejection req, S3 */
178 TP_HKEY_EV_WKUP_S4_BAYEJ
= 0x2405, /* bay ejection req, S4 */
179 TP_HKEY_EV_WKUP_S3_BATLOW
= 0x2313, /* battery empty, S3 */
180 TP_HKEY_EV_WKUP_S4_BATLOW
= 0x2413, /* battery empty, S4 */
182 /* Auto-sleep after eject request */
183 TP_HKEY_EV_BAYEJ_ACK
= 0x3003, /* bay ejection complete */
184 TP_HKEY_EV_UNDOCK_ACK
= 0x4003, /* undock complete */
186 /* Misc bay events */
187 TP_HKEY_EV_OPTDRV_EJ
= 0x3006, /* opt. drive tray ejected */
188 TP_HKEY_EV_HOTPLUG_DOCK
= 0x4010, /* docked into hotplug dock
189 or port replicator */
190 TP_HKEY_EV_HOTPLUG_UNDOCK
= 0x4011, /* undocked from hotplug
191 dock or port replicator */
193 /* User-interface events */
194 TP_HKEY_EV_LID_CLOSE
= 0x5001, /* laptop lid closed */
195 TP_HKEY_EV_LID_OPEN
= 0x5002, /* laptop lid opened */
196 TP_HKEY_EV_TABLET_TABLET
= 0x5009, /* tablet swivel up */
197 TP_HKEY_EV_TABLET_NOTEBOOK
= 0x500a, /* tablet swivel down */
198 TP_HKEY_EV_PEN_INSERTED
= 0x500b, /* tablet pen inserted */
199 TP_HKEY_EV_PEN_REMOVED
= 0x500c, /* tablet pen removed */
200 TP_HKEY_EV_BRGHT_CHANGED
= 0x5010, /* backlight control event */
202 /* Key-related user-interface events */
203 TP_HKEY_EV_KEY_NUMLOCK
= 0x6000, /* NumLock key pressed */
204 TP_HKEY_EV_KEY_FN
= 0x6005, /* Fn key pressed? E420 */
207 TP_HKEY_EV_ALARM_BAT_HOT
= 0x6011, /* battery too hot */
208 TP_HKEY_EV_ALARM_BAT_XHOT
= 0x6012, /* battery critically hot */
209 TP_HKEY_EV_ALARM_SENSOR_HOT
= 0x6021, /* sensor too hot */
210 TP_HKEY_EV_ALARM_SENSOR_XHOT
= 0x6022, /* sensor critically hot */
211 TP_HKEY_EV_THM_TABLE_CHANGED
= 0x6030, /* thermal table changed */
213 /* AC-related events */
214 TP_HKEY_EV_AC_CHANGED
= 0x6040, /* AC status changed */
217 TP_HKEY_EV_RFKILL_CHANGED
= 0x7000, /* rfkill switch changed */
220 /****************************************************************************
224 #define TPACPI_NAME "thinkpad"
225 #define TPACPI_DESC "ThinkPad ACPI Extras"
226 #define TPACPI_FILE TPACPI_NAME "_acpi"
227 #define TPACPI_URL "http://ibm-acpi.sf.net/"
228 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
230 #define TPACPI_PROC_DIR "ibm"
231 #define TPACPI_ACPI_EVENT_PREFIX "ibm"
232 #define TPACPI_DRVR_NAME TPACPI_FILE
233 #define TPACPI_DRVR_SHORTNAME "tpacpi"
234 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
236 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
237 #define TPACPI_WORKQUEUE_NAME "ktpacpid"
239 #define TPACPI_MAX_ACPI_ARGS 3
241 /* Debugging printk groups */
242 #define TPACPI_DBG_ALL 0xffff
243 #define TPACPI_DBG_DISCLOSETASK 0x8000
244 #define TPACPI_DBG_INIT 0x0001
245 #define TPACPI_DBG_EXIT 0x0002
246 #define TPACPI_DBG_RFKILL 0x0004
247 #define TPACPI_DBG_HKEY 0x0008
248 #define TPACPI_DBG_FAN 0x0010
249 #define TPACPI_DBG_BRGHT 0x0020
250 #define TPACPI_DBG_MIXER 0x0040
252 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
253 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
254 #define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
257 /****************************************************************************
258 * Driver-wide structs and misc. variables
263 struct tp_acpi_drv_struct
{
264 const struct acpi_device_id
*hid
;
265 struct acpi_driver
*driver
;
267 void (*notify
) (struct ibm_struct
*, u32
);
270 struct acpi_device
*device
;
276 int (*read
) (struct seq_file
*);
277 int (*write
) (char *);
279 void (*resume
) (void);
280 void (*suspend
) (void);
281 void (*shutdown
) (void);
283 struct list_head all_drivers
;
285 struct tp_acpi_drv_struct
*acpi
;
288 u8 acpi_driver_registered
:1;
289 u8 acpi_notify_installed
:1;
296 struct ibm_init_struct
{
299 int (*init
) (struct ibm_init_struct
*);
300 umode_t base_procfs_mode
;
301 struct ibm_struct
*data
;
312 u32 bright_acpimode
:1;
316 u32 fan_ctrl_status_undef
:1;
318 u32 beep_needs_two_args
:1;
319 u32 mixer_no_level_control
:1;
320 u32 input_device_registered
:1;
321 u32 platform_drv_registered
:1;
322 u32 platform_drv_attrs_registered
:1;
323 u32 sensors_pdrv_registered
:1;
324 u32 sensors_pdrv_attrs_registered
:1;
325 u32 sensors_pdev_attrs_registered
:1;
326 u32 hotkey_poll_active
:1;
330 u16 hotkey_mask_ff
:1;
331 u16 volume_ctrl_forbidden
:1;
334 struct thinkpad_id_data
{
335 unsigned int vendor
; /* ThinkPad vendor:
336 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
338 char *bios_version_str
; /* Something like 1ZET51WW (1.03z) */
339 char *ec_version_str
; /* Something like 1ZHT51WW-1.04a */
341 u16 bios_model
; /* 1Y = 0x5931, 0 = unknown */
343 u16 bios_release
; /* 1ZETK1WW = 0x314b, 0 = unknown */
346 char *model_str
; /* ThinkPad T43 */
347 char *nummodel_str
; /* 9384A9C for a 9384-A9C model */
349 static struct thinkpad_id_data thinkpad_id
;
352 TPACPI_LIFE_INIT
= 0,
357 static int experimental
;
358 static u32 dbg_level
;
360 static struct workqueue_struct
*tpacpi_wq
;
368 /* Special LED class that can defer work */
369 struct tpacpi_led_classdev
{
370 struct led_classdev led_classdev
;
371 struct work_struct work
;
372 enum led_status_t new_state
;
376 /* brightness level capabilities */
377 static unsigned int bright_maxlvl
; /* 0 = unknown */
379 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
380 static int dbg_wlswemul
;
381 static bool tpacpi_wlsw_emulstate
;
382 static int dbg_bluetoothemul
;
383 static bool tpacpi_bluetooth_emulstate
;
384 static int dbg_wwanemul
;
385 static bool tpacpi_wwan_emulstate
;
386 static int dbg_uwbemul
;
387 static bool tpacpi_uwb_emulstate
;
391 /*************************************************************************
395 #define dbg_printk(a_dbg_level, format, arg...) \
397 if (dbg_level & (a_dbg_level)) \
398 printk(KERN_DEBUG pr_fmt("%s: " format), \
402 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
403 #define vdbg_printk dbg_printk
404 static const char *str_supported(int is_supported
);
406 static inline const char *str_supported(int is_supported
) { return ""; }
407 #define vdbg_printk(a_dbg_level, format, arg...) \
408 no_printk(format, ##arg)
411 static void tpacpi_log_usertask(const char * const what
)
413 printk(KERN_DEBUG
pr_fmt("%s: access by process with PID %d\n"),
414 what
, task_tgid_vnr(current
));
417 #define tpacpi_disclose_usertask(what, format, arg...) \
419 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \
420 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
421 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \
422 what, task_tgid_vnr(current), ## arg); \
427 * Quirk handling helpers
429 * ThinkPad IDs and versions seen in the field so far
430 * are two-characters from the set [0-9A-Z], i.e. base 36.
432 * We use values well outside that range as specials.
435 #define TPACPI_MATCH_ANY 0xffffU
436 #define TPACPI_MATCH_UNKNOWN 0U
438 /* TPID('1', 'Y') == 0x5931 */
439 #define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
441 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \
442 { .vendor = PCI_VENDOR_ID_IBM, \
443 .bios = TPID(__id1, __id2), \
444 .ec = TPACPI_MATCH_ANY, \
445 .quirks = (__quirk) }
447 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \
448 { .vendor = PCI_VENDOR_ID_LENOVO, \
449 .bios = TPID(__id1, __id2), \
450 .ec = TPACPI_MATCH_ANY, \
451 .quirks = (__quirk) }
453 #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
454 { .vendor = PCI_VENDOR_ID_LENOVO, \
455 .bios = TPACPI_MATCH_ANY, \
456 .ec = TPID(__id1, __id2), \
457 .quirks = (__quirk) }
459 struct tpacpi_quirk
{
463 unsigned long quirks
;
467 * tpacpi_check_quirks() - search BIOS/EC version on a list
468 * @qlist: array of &struct tpacpi_quirk
469 * @qlist_size: number of elements in @qlist
471 * Iterates over a quirks list until one is found that matches the
472 * ThinkPad's vendor, BIOS and EC model.
474 * Returns 0 if nothing matches, otherwise returns the quirks field of
475 * the matching &struct tpacpi_quirk entry.
477 * The match criteria is: vendor, ec and bios much match.
479 static unsigned long __init
tpacpi_check_quirks(
480 const struct tpacpi_quirk
*qlist
,
481 unsigned int qlist_size
)
484 if ((qlist
->vendor
== thinkpad_id
.vendor
||
485 qlist
->vendor
== TPACPI_MATCH_ANY
) &&
486 (qlist
->bios
== thinkpad_id
.bios_model
||
487 qlist
->bios
== TPACPI_MATCH_ANY
) &&
488 (qlist
->ec
== thinkpad_id
.ec_model
||
489 qlist
->ec
== TPACPI_MATCH_ANY
))
490 return qlist
->quirks
;
498 static inline bool __pure __init
tpacpi_is_lenovo(void)
500 return thinkpad_id
.vendor
== PCI_VENDOR_ID_LENOVO
;
503 static inline bool __pure __init
tpacpi_is_ibm(void)
505 return thinkpad_id
.vendor
== PCI_VENDOR_ID_IBM
;
508 /****************************************************************************
509 ****************************************************************************
511 * ACPI Helpers and device model
513 ****************************************************************************
514 ****************************************************************************/
516 /*************************************************************************
520 static acpi_handle root_handle
;
521 static acpi_handle ec_handle
;
523 #define TPACPI_HANDLE(object, parent, paths...) \
524 static acpi_handle object##_handle; \
525 static const acpi_handle * const object##_parent __initconst = \
527 static char *object##_paths[] __initdata = { paths }
529 TPACPI_HANDLE(ecrd
, ec
, "ECRD"); /* 570 */
530 TPACPI_HANDLE(ecwr
, ec
, "ECWR"); /* 570 */
532 TPACPI_HANDLE(cmos
, root
, "\\UCMS", /* R50, R50e, R50p, R51, */
534 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
535 "\\CMS", /* R40, R40e */
538 TPACPI_HANDLE(hkey
, ec
, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
539 "^HKEY", /* R30, R31 */
540 "HKEY", /* all others */
543 /*************************************************************************
547 static int acpi_evalf(acpi_handle handle
,
548 int *res
, char *method
, char *fmt
, ...)
551 struct acpi_object_list params
;
552 union acpi_object in_objs
[TPACPI_MAX_ACPI_ARGS
];
553 struct acpi_buffer result
, *resultp
;
554 union acpi_object out_obj
;
562 pr_err("acpi_evalf() called with empty format\n");
575 params
.pointer
= &in_objs
[0];
582 in_objs
[params
.count
].integer
.value
= va_arg(ap
, int);
583 in_objs
[params
.count
++].type
= ACPI_TYPE_INTEGER
;
585 /* add more types as needed */
587 pr_err("acpi_evalf() called "
588 "with invalid format character '%c'\n", c
);
595 if (res_type
!= 'v') {
596 result
.length
= sizeof(out_obj
);
597 result
.pointer
= &out_obj
;
602 status
= acpi_evaluate_object(handle
, method
, ¶ms
, resultp
);
606 success
= (status
== AE_OK
&&
607 out_obj
.type
== ACPI_TYPE_INTEGER
);
609 *res
= out_obj
.integer
.value
;
612 success
= status
== AE_OK
;
614 /* add more types as needed */
616 pr_err("acpi_evalf() called "
617 "with invalid format character '%c'\n", res_type
);
621 if (!success
&& !quiet
)
622 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n",
623 method
, fmt0
, acpi_format_exception(status
));
628 static int acpi_ec_read(int i
, u8
*p
)
633 if (!acpi_evalf(ecrd_handle
, &v
, NULL
, "dd", i
))
637 if (ec_read(i
, p
) < 0)
644 static int acpi_ec_write(int i
, u8 v
)
647 if (!acpi_evalf(ecwr_handle
, NULL
, NULL
, "vdd", i
, v
))
650 if (ec_write(i
, v
) < 0)
657 static int issue_thinkpad_cmos_command(int cmos_cmd
)
662 if (!acpi_evalf(cmos_handle
, NULL
, NULL
, "vd", cmos_cmd
))
668 /*************************************************************************
672 #define TPACPI_ACPIHANDLE_INIT(object) \
673 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
674 object##_paths, ARRAY_SIZE(object##_paths))
676 static void __init
drv_acpi_handle_init(const char *name
,
677 acpi_handle
*handle
, const acpi_handle parent
,
678 char **paths
, const int num_paths
)
683 vdbg_printk(TPACPI_DBG_INIT
, "trying to locate ACPI handle for %s\n",
686 for (i
= 0; i
< num_paths
; i
++) {
687 status
= acpi_get_handle(parent
, paths
[i
], handle
);
688 if (ACPI_SUCCESS(status
)) {
689 dbg_printk(TPACPI_DBG_INIT
,
690 "Found ACPI handle %s for %s\n",
696 vdbg_printk(TPACPI_DBG_INIT
, "ACPI handle for %s not found\n",
701 static acpi_status __init
tpacpi_acpi_handle_locate_callback(acpi_handle handle
,
702 u32 level
, void *context
, void **return_value
)
704 struct acpi_device
*dev
;
705 if (!strcmp(context
, "video")) {
706 if (acpi_bus_get_device(handle
, &dev
))
708 if (strcmp(ACPI_VIDEO_HID
, acpi_device_hid(dev
)))
712 *(acpi_handle
*)return_value
= handle
;
714 return AE_CTRL_TERMINATE
;
717 static void __init
tpacpi_acpi_handle_locate(const char *name
,
722 acpi_handle device_found
;
724 BUG_ON(!name
|| !handle
);
725 vdbg_printk(TPACPI_DBG_INIT
,
726 "trying to locate ACPI handle for %s, using HID %s\n",
727 name
, hid
? hid
: "NULL");
729 memset(&device_found
, 0, sizeof(device_found
));
730 status
= acpi_get_devices(hid
, tpacpi_acpi_handle_locate_callback
,
731 (void *)name
, &device_found
);
735 if (ACPI_SUCCESS(status
)) {
736 *handle
= device_found
;
737 dbg_printk(TPACPI_DBG_INIT
,
738 "Found ACPI handle for %s\n", name
);
740 vdbg_printk(TPACPI_DBG_INIT
,
741 "Could not locate an ACPI handle for %s: %s\n",
742 name
, acpi_format_exception(status
));
746 static void dispatch_acpi_notify(acpi_handle handle
, u32 event
, void *data
)
748 struct ibm_struct
*ibm
= data
;
750 if (tpacpi_lifecycle
!= TPACPI_LIFE_RUNNING
)
753 if (!ibm
|| !ibm
->acpi
|| !ibm
->acpi
->notify
)
756 ibm
->acpi
->notify(ibm
, event
);
759 static int __init
setup_acpi_notify(struct ibm_struct
*ibm
)
766 if (!*ibm
->acpi
->handle
)
769 vdbg_printk(TPACPI_DBG_INIT
,
770 "setting up ACPI notify for %s\n", ibm
->name
);
772 rc
= acpi_bus_get_device(*ibm
->acpi
->handle
, &ibm
->acpi
->device
);
774 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm
->name
, rc
);
778 ibm
->acpi
->device
->driver_data
= ibm
;
779 sprintf(acpi_device_class(ibm
->acpi
->device
), "%s/%s",
780 TPACPI_ACPI_EVENT_PREFIX
,
783 status
= acpi_install_notify_handler(*ibm
->acpi
->handle
,
784 ibm
->acpi
->type
, dispatch_acpi_notify
, ibm
);
785 if (ACPI_FAILURE(status
)) {
786 if (status
== AE_ALREADY_EXISTS
) {
787 pr_notice("another device driver is already "
788 "handling %s events\n", ibm
->name
);
790 pr_err("acpi_install_notify_handler(%s) failed: %s\n",
791 ibm
->name
, acpi_format_exception(status
));
795 ibm
->flags
.acpi_notify_installed
= 1;
799 static int __init
tpacpi_device_add(struct acpi_device
*device
)
804 static int __init
register_tpacpi_subdriver(struct ibm_struct
*ibm
)
808 dbg_printk(TPACPI_DBG_INIT
,
809 "registering %s as an ACPI driver\n", ibm
->name
);
813 ibm
->acpi
->driver
= kzalloc(sizeof(struct acpi_driver
), GFP_KERNEL
);
814 if (!ibm
->acpi
->driver
) {
815 pr_err("failed to allocate memory for ibm->acpi->driver\n");
819 sprintf(ibm
->acpi
->driver
->name
, "%s_%s", TPACPI_NAME
, ibm
->name
);
820 ibm
->acpi
->driver
->ids
= ibm
->acpi
->hid
;
822 ibm
->acpi
->driver
->ops
.add
= &tpacpi_device_add
;
824 rc
= acpi_bus_register_driver(ibm
->acpi
->driver
);
826 pr_err("acpi_bus_register_driver(%s) failed: %d\n",
828 kfree(ibm
->acpi
->driver
);
829 ibm
->acpi
->driver
= NULL
;
831 ibm
->flags
.acpi_driver_registered
= 1;
837 /****************************************************************************
838 ****************************************************************************
842 ****************************************************************************
843 ****************************************************************************/
845 static int dispatch_proc_show(struct seq_file
*m
, void *v
)
847 struct ibm_struct
*ibm
= m
->private;
849 if (!ibm
|| !ibm
->read
)
854 static int dispatch_proc_open(struct inode
*inode
, struct file
*file
)
856 return single_open(file
, dispatch_proc_show
, PDE_DATA(inode
));
859 static ssize_t
dispatch_proc_write(struct file
*file
,
860 const char __user
*userbuf
,
861 size_t count
, loff_t
*pos
)
863 struct ibm_struct
*ibm
= PDE_DATA(file_inode(file
));
867 if (!ibm
|| !ibm
->write
)
869 if (count
> PAGE_SIZE
- 2)
872 kernbuf
= kmalloc(count
+ 2, GFP_KERNEL
);
876 if (copy_from_user(kernbuf
, userbuf
, count
)) {
882 strcat(kernbuf
, ",");
883 ret
= ibm
->write(kernbuf
);
892 static const struct file_operations dispatch_proc_fops
= {
893 .owner
= THIS_MODULE
,
894 .open
= dispatch_proc_open
,
897 .release
= single_release
,
898 .write
= dispatch_proc_write
,
901 static char *next_cmd(char **cmds
)
906 while ((end
= strchr(start
, ',')) && end
== start
)
918 /****************************************************************************
919 ****************************************************************************
921 * Device model: input, hwmon and platform
923 ****************************************************************************
924 ****************************************************************************/
926 static struct platform_device
*tpacpi_pdev
;
927 static struct platform_device
*tpacpi_sensors_pdev
;
928 static struct device
*tpacpi_hwmon
;
929 static struct input_dev
*tpacpi_inputdev
;
930 static struct mutex tpacpi_inputdev_send_mutex
;
931 static LIST_HEAD(tpacpi_all_drivers
);
933 #ifdef CONFIG_PM_SLEEP
934 static int tpacpi_suspend_handler(struct device
*dev
)
936 struct ibm_struct
*ibm
, *itmp
;
938 list_for_each_entry_safe(ibm
, itmp
,
948 static int tpacpi_resume_handler(struct device
*dev
)
950 struct ibm_struct
*ibm
, *itmp
;
952 list_for_each_entry_safe(ibm
, itmp
,
963 static SIMPLE_DEV_PM_OPS(tpacpi_pm
,
964 tpacpi_suspend_handler
, tpacpi_resume_handler
);
966 static void tpacpi_shutdown_handler(struct platform_device
*pdev
)
968 struct ibm_struct
*ibm
, *itmp
;
970 list_for_each_entry_safe(ibm
, itmp
,
978 static struct platform_driver tpacpi_pdriver
= {
980 .name
= TPACPI_DRVR_NAME
,
981 .owner
= THIS_MODULE
,
984 .shutdown
= tpacpi_shutdown_handler
,
987 static struct platform_driver tpacpi_hwmon_pdriver
= {
989 .name
= TPACPI_HWMON_DRVR_NAME
,
990 .owner
= THIS_MODULE
,
994 /*************************************************************************
995 * sysfs support helpers
998 struct attribute_set
{
999 unsigned int members
, max_members
;
1000 struct attribute_group group
;
1003 struct attribute_set_obj
{
1004 struct attribute_set s
;
1005 struct attribute
*a
;
1006 } __attribute__((packed
));
1008 static struct attribute_set
*create_attr_set(unsigned int max_members
,
1011 struct attribute_set_obj
*sobj
;
1013 if (max_members
== 0)
1016 /* Allocates space for implicit NULL at the end too */
1017 sobj
= kzalloc(sizeof(struct attribute_set_obj
) +
1018 max_members
* sizeof(struct attribute
*),
1022 sobj
->s
.max_members
= max_members
;
1023 sobj
->s
.group
.attrs
= &sobj
->a
;
1024 sobj
->s
.group
.name
= name
;
1029 #define destroy_attr_set(_set) \
1032 /* not multi-threaded safe, use it in a single thread per set */
1033 static int add_to_attr_set(struct attribute_set
*s
, struct attribute
*attr
)
1038 if (s
->members
>= s
->max_members
)
1041 s
->group
.attrs
[s
->members
] = attr
;
1047 static int add_many_to_attr_set(struct attribute_set
*s
,
1048 struct attribute
**attr
,
1053 for (i
= 0; i
< count
; i
++) {
1054 res
= add_to_attr_set(s
, attr
[i
]);
1062 static void delete_attr_set(struct attribute_set
*s
, struct kobject
*kobj
)
1064 sysfs_remove_group(kobj
, &s
->group
);
1065 destroy_attr_set(s
);
1068 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
1069 sysfs_create_group(_kobj, &_attr_set->group)
1071 static int parse_strtoul(const char *buf
,
1072 unsigned long max
, unsigned long *value
)
1076 *value
= simple_strtoul(skip_spaces(buf
), &endp
, 0);
1077 endp
= skip_spaces(endp
);
1078 if (*endp
|| *value
> max
)
1084 static void tpacpi_disable_brightness_delay(void)
1086 if (acpi_evalf(hkey_handle
, NULL
, "PWMS", "qvd", 0))
1087 pr_notice("ACPI backlight control delay disabled\n");
1090 static void printk_deprecated_attribute(const char * const what
,
1091 const char * const details
)
1093 tpacpi_log_usertask("deprecated sysfs attribute");
1094 pr_warn("WARNING: sysfs attribute %s is deprecated and "
1095 "will be removed. %s\n",
1099 /*************************************************************************
1100 * rfkill and radio control support helpers
1104 * ThinkPad-ACPI firmware handling model:
1106 * WLSW (master wireless switch) is event-driven, and is common to all
1107 * firmware-controlled radios. It cannot be controlled, just monitored,
1108 * as expected. It overrides all radio state in firmware
1110 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1111 * (TODO: verify how WLSW interacts with the returned radio state).
1113 * The only time there are shadow radio state changes, is when
1114 * masked-off hotkeys are used.
1118 * Internal driver API for radio state:
1120 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1121 * bool: true means radio blocked (off)
1123 enum tpacpi_rfkill_state
{
1124 TPACPI_RFK_RADIO_OFF
= 0,
1128 /* rfkill switches */
1129 enum tpacpi_rfk_id
{
1130 TPACPI_RFK_BLUETOOTH_SW_ID
= 0,
1131 TPACPI_RFK_WWAN_SW_ID
,
1132 TPACPI_RFK_UWB_SW_ID
,
1136 static const char *tpacpi_rfkill_names
[] = {
1137 [TPACPI_RFK_BLUETOOTH_SW_ID
] = "bluetooth",
1138 [TPACPI_RFK_WWAN_SW_ID
] = "wwan",
1139 [TPACPI_RFK_UWB_SW_ID
] = "uwb",
1140 [TPACPI_RFK_SW_MAX
] = NULL
1143 /* ThinkPad-ACPI rfkill subdriver */
1145 struct rfkill
*rfkill
;
1146 enum tpacpi_rfk_id id
;
1147 const struct tpacpi_rfk_ops
*ops
;
1150 struct tpacpi_rfk_ops
{
1151 /* firmware interface */
1152 int (*get_status
)(void);
1153 int (*set_status
)(const enum tpacpi_rfkill_state
);
1156 static struct tpacpi_rfk
*tpacpi_rfkill_switches
[TPACPI_RFK_SW_MAX
];
1158 /* Query FW and update rfkill sw state for a given rfkill switch */
1159 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk
*tp_rfk
)
1166 status
= (tp_rfk
->ops
->get_status
)();
1170 rfkill_set_sw_state(tp_rfk
->rfkill
,
1171 (status
== TPACPI_RFK_RADIO_OFF
));
1176 /* Query FW and update rfkill sw state for all rfkill switches */
1177 static void tpacpi_rfk_update_swstate_all(void)
1181 for (i
= 0; i
< TPACPI_RFK_SW_MAX
; i
++)
1182 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[i
]);
1186 * Sync the HW-blocking state of all rfkill switches,
1187 * do notice it causes the rfkill core to schedule uevents
1189 static void tpacpi_rfk_update_hwblock_state(bool blocked
)
1192 struct tpacpi_rfk
*tp_rfk
;
1194 for (i
= 0; i
< TPACPI_RFK_SW_MAX
; i
++) {
1195 tp_rfk
= tpacpi_rfkill_switches
[i
];
1197 if (rfkill_set_hw_state(tp_rfk
->rfkill
,
1199 /* ignore -- we track sw block */
1205 /* Call to get the WLSW state from the firmware */
1206 static int hotkey_get_wlsw(void);
1208 /* Call to query WLSW state and update all rfkill switches */
1209 static bool tpacpi_rfk_check_hwblock_state(void)
1211 int res
= hotkey_get_wlsw();
1214 /* When unknown or unsupported, we have to assume it is unblocked */
1218 hw_blocked
= (res
== TPACPI_RFK_RADIO_OFF
);
1219 tpacpi_rfk_update_hwblock_state(hw_blocked
);
1224 static int tpacpi_rfk_hook_set_block(void *data
, bool blocked
)
1226 struct tpacpi_rfk
*tp_rfk
= data
;
1229 dbg_printk(TPACPI_DBG_RFKILL
,
1230 "request to change radio state to %s\n",
1231 blocked
? "blocked" : "unblocked");
1233 /* try to set radio state */
1234 res
= (tp_rfk
->ops
->set_status
)(blocked
?
1235 TPACPI_RFK_RADIO_OFF
: TPACPI_RFK_RADIO_ON
);
1237 /* and update the rfkill core with whatever the FW really did */
1238 tpacpi_rfk_update_swstate(tp_rfk
);
1240 return (res
< 0) ? res
: 0;
1243 static const struct rfkill_ops tpacpi_rfk_rfkill_ops
= {
1244 .set_block
= tpacpi_rfk_hook_set_block
,
1247 static int __init
tpacpi_new_rfkill(const enum tpacpi_rfk_id id
,
1248 const struct tpacpi_rfk_ops
*tp_rfkops
,
1249 const enum rfkill_type rfktype
,
1251 const bool set_default
)
1253 struct tpacpi_rfk
*atp_rfk
;
1255 bool sw_state
= false;
1259 BUG_ON(id
>= TPACPI_RFK_SW_MAX
|| tpacpi_rfkill_switches
[id
]);
1261 atp_rfk
= kzalloc(sizeof(struct tpacpi_rfk
), GFP_KERNEL
);
1263 atp_rfk
->rfkill
= rfkill_alloc(name
,
1266 &tpacpi_rfk_rfkill_ops
,
1268 if (!atp_rfk
|| !atp_rfk
->rfkill
) {
1269 pr_err("failed to allocate memory for rfkill class\n");
1275 atp_rfk
->ops
= tp_rfkops
;
1277 sw_status
= (tp_rfkops
->get_status
)();
1278 if (sw_status
< 0) {
1279 pr_err("failed to read initial state for %s, error %d\n",
1282 sw_state
= (sw_status
== TPACPI_RFK_RADIO_OFF
);
1284 /* try to keep the initial state, since we ask the
1285 * firmware to preserve it across S5 in NVRAM */
1286 rfkill_init_sw_state(atp_rfk
->rfkill
, sw_state
);
1289 hw_state
= tpacpi_rfk_check_hwblock_state();
1290 rfkill_set_hw_state(atp_rfk
->rfkill
, hw_state
);
1292 res
= rfkill_register(atp_rfk
->rfkill
);
1294 pr_err("failed to register %s rfkill switch: %d\n", name
, res
);
1295 rfkill_destroy(atp_rfk
->rfkill
);
1300 tpacpi_rfkill_switches
[id
] = atp_rfk
;
1302 pr_info("rfkill switch %s: radio is %sblocked\n",
1303 name
, (sw_state
|| hw_state
) ? "" : "un");
1307 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id
)
1309 struct tpacpi_rfk
*tp_rfk
;
1311 BUG_ON(id
>= TPACPI_RFK_SW_MAX
);
1313 tp_rfk
= tpacpi_rfkill_switches
[id
];
1315 rfkill_unregister(tp_rfk
->rfkill
);
1316 rfkill_destroy(tp_rfk
->rfkill
);
1317 tpacpi_rfkill_switches
[id
] = NULL
;
1322 static void printk_deprecated_rfkill_attribute(const char * const what
)
1324 printk_deprecated_attribute(what
,
1325 "Please switch to generic rfkill before year 2010");
1328 /* sysfs <radio> enable ------------------------------------------------ */
1329 static ssize_t
tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id
,
1330 struct device_attribute
*attr
,
1335 printk_deprecated_rfkill_attribute(attr
->attr
.name
);
1337 /* This is in the ABI... */
1338 if (tpacpi_rfk_check_hwblock_state()) {
1339 status
= TPACPI_RFK_RADIO_OFF
;
1341 status
= tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[id
]);
1346 return snprintf(buf
, PAGE_SIZE
, "%d\n",
1347 (status
== TPACPI_RFK_RADIO_ON
) ? 1 : 0);
1350 static ssize_t
tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id
,
1351 struct device_attribute
*attr
,
1352 const char *buf
, size_t count
)
1357 printk_deprecated_rfkill_attribute(attr
->attr
.name
);
1359 if (parse_strtoul(buf
, 1, &t
))
1362 tpacpi_disclose_usertask(attr
->attr
.name
, "set to %ld\n", t
);
1364 /* This is in the ABI... */
1365 if (tpacpi_rfk_check_hwblock_state() && !!t
)
1368 res
= tpacpi_rfkill_switches
[id
]->ops
->set_status((!!t
) ?
1369 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
);
1370 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[id
]);
1372 return (res
< 0) ? res
: count
;
1375 /* procfs -------------------------------------------------------------- */
1376 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id
, struct seq_file
*m
)
1378 if (id
>= TPACPI_RFK_SW_MAX
)
1379 seq_printf(m
, "status:\t\tnot supported\n");
1383 /* This is in the ABI... */
1384 if (tpacpi_rfk_check_hwblock_state()) {
1385 status
= TPACPI_RFK_RADIO_OFF
;
1387 status
= tpacpi_rfk_update_swstate(
1388 tpacpi_rfkill_switches
[id
]);
1393 seq_printf(m
, "status:\t\t%s\n",
1394 (status
== TPACPI_RFK_RADIO_ON
) ?
1395 "enabled" : "disabled");
1396 seq_printf(m
, "commands:\tenable, disable\n");
1402 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id
, char *buf
)
1408 if (id
>= TPACPI_RFK_SW_MAX
)
1411 while ((cmd
= next_cmd(&buf
))) {
1412 if (strlencmp(cmd
, "enable") == 0)
1413 status
= TPACPI_RFK_RADIO_ON
;
1414 else if (strlencmp(cmd
, "disable") == 0)
1415 status
= TPACPI_RFK_RADIO_OFF
;
1421 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1422 (status
== TPACPI_RFK_RADIO_ON
) ?
1423 "enable" : "disable",
1424 tpacpi_rfkill_names
[id
]);
1425 res
= (tpacpi_rfkill_switches
[id
]->ops
->set_status
)(status
);
1426 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[id
]);
1432 /*************************************************************************
1433 * thinkpad-acpi driver attributes
1436 /* interface_version --------------------------------------------------- */
1437 static ssize_t
tpacpi_driver_interface_version_show(
1438 struct device_driver
*drv
,
1441 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", TPACPI_SYSFS_VERSION
);
1444 static DRIVER_ATTR(interface_version
, S_IRUGO
,
1445 tpacpi_driver_interface_version_show
, NULL
);
1447 /* debug_level --------------------------------------------------------- */
1448 static ssize_t
tpacpi_driver_debug_show(struct device_driver
*drv
,
1451 return snprintf(buf
, PAGE_SIZE
, "0x%04x\n", dbg_level
);
1454 static ssize_t
tpacpi_driver_debug_store(struct device_driver
*drv
,
1455 const char *buf
, size_t count
)
1459 if (parse_strtoul(buf
, 0xffff, &t
))
1467 static DRIVER_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
1468 tpacpi_driver_debug_show
, tpacpi_driver_debug_store
);
1470 /* version ------------------------------------------------------------- */
1471 static ssize_t
tpacpi_driver_version_show(struct device_driver
*drv
,
1474 return snprintf(buf
, PAGE_SIZE
, "%s v%s\n",
1475 TPACPI_DESC
, TPACPI_VERSION
);
1478 static DRIVER_ATTR(version
, S_IRUGO
,
1479 tpacpi_driver_version_show
, NULL
);
1481 /* --------------------------------------------------------------------- */
1483 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1485 /* wlsw_emulstate ------------------------------------------------------ */
1486 static ssize_t
tpacpi_driver_wlsw_emulstate_show(struct device_driver
*drv
,
1489 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_wlsw_emulstate
);
1492 static ssize_t
tpacpi_driver_wlsw_emulstate_store(struct device_driver
*drv
,
1493 const char *buf
, size_t count
)
1497 if (parse_strtoul(buf
, 1, &t
))
1500 if (tpacpi_wlsw_emulstate
!= !!t
) {
1501 tpacpi_wlsw_emulstate
= !!t
;
1502 tpacpi_rfk_update_hwblock_state(!t
); /* negative logic */
1508 static DRIVER_ATTR(wlsw_emulstate
, S_IWUSR
| S_IRUGO
,
1509 tpacpi_driver_wlsw_emulstate_show
,
1510 tpacpi_driver_wlsw_emulstate_store
);
1512 /* bluetooth_emulstate ------------------------------------------------- */
1513 static ssize_t
tpacpi_driver_bluetooth_emulstate_show(
1514 struct device_driver
*drv
,
1517 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_bluetooth_emulstate
);
1520 static ssize_t
tpacpi_driver_bluetooth_emulstate_store(
1521 struct device_driver
*drv
,
1522 const char *buf
, size_t count
)
1526 if (parse_strtoul(buf
, 1, &t
))
1529 tpacpi_bluetooth_emulstate
= !!t
;
1534 static DRIVER_ATTR(bluetooth_emulstate
, S_IWUSR
| S_IRUGO
,
1535 tpacpi_driver_bluetooth_emulstate_show
,
1536 tpacpi_driver_bluetooth_emulstate_store
);
1538 /* wwan_emulstate ------------------------------------------------- */
1539 static ssize_t
tpacpi_driver_wwan_emulstate_show(
1540 struct device_driver
*drv
,
1543 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_wwan_emulstate
);
1546 static ssize_t
tpacpi_driver_wwan_emulstate_store(
1547 struct device_driver
*drv
,
1548 const char *buf
, size_t count
)
1552 if (parse_strtoul(buf
, 1, &t
))
1555 tpacpi_wwan_emulstate
= !!t
;
1560 static DRIVER_ATTR(wwan_emulstate
, S_IWUSR
| S_IRUGO
,
1561 tpacpi_driver_wwan_emulstate_show
,
1562 tpacpi_driver_wwan_emulstate_store
);
1564 /* uwb_emulstate ------------------------------------------------- */
1565 static ssize_t
tpacpi_driver_uwb_emulstate_show(
1566 struct device_driver
*drv
,
1569 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_uwb_emulstate
);
1572 static ssize_t
tpacpi_driver_uwb_emulstate_store(
1573 struct device_driver
*drv
,
1574 const char *buf
, size_t count
)
1578 if (parse_strtoul(buf
, 1, &t
))
1581 tpacpi_uwb_emulstate
= !!t
;
1586 static DRIVER_ATTR(uwb_emulstate
, S_IWUSR
| S_IRUGO
,
1587 tpacpi_driver_uwb_emulstate_show
,
1588 tpacpi_driver_uwb_emulstate_store
);
1591 /* --------------------------------------------------------------------- */
1593 static struct driver_attribute
*tpacpi_driver_attributes
[] = {
1594 &driver_attr_debug_level
, &driver_attr_version
,
1595 &driver_attr_interface_version
,
1598 static int __init
tpacpi_create_driver_attributes(struct device_driver
*drv
)
1604 while (!res
&& i
< ARRAY_SIZE(tpacpi_driver_attributes
)) {
1605 res
= driver_create_file(drv
, tpacpi_driver_attributes
[i
]);
1609 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1610 if (!res
&& dbg_wlswemul
)
1611 res
= driver_create_file(drv
, &driver_attr_wlsw_emulstate
);
1612 if (!res
&& dbg_bluetoothemul
)
1613 res
= driver_create_file(drv
, &driver_attr_bluetooth_emulstate
);
1614 if (!res
&& dbg_wwanemul
)
1615 res
= driver_create_file(drv
, &driver_attr_wwan_emulstate
);
1616 if (!res
&& dbg_uwbemul
)
1617 res
= driver_create_file(drv
, &driver_attr_uwb_emulstate
);
1623 static void tpacpi_remove_driver_attributes(struct device_driver
*drv
)
1627 for (i
= 0; i
< ARRAY_SIZE(tpacpi_driver_attributes
); i
++)
1628 driver_remove_file(drv
, tpacpi_driver_attributes
[i
]);
1630 #ifdef THINKPAD_ACPI_DEBUGFACILITIES
1631 driver_remove_file(drv
, &driver_attr_wlsw_emulstate
);
1632 driver_remove_file(drv
, &driver_attr_bluetooth_emulstate
);
1633 driver_remove_file(drv
, &driver_attr_wwan_emulstate
);
1634 driver_remove_file(drv
, &driver_attr_uwb_emulstate
);
1638 /*************************************************************************
1643 * Table of recommended minimum BIOS versions
1645 * Reasons for listing:
1646 * 1. Stable BIOS, listed because the unknown amount of
1647 * bugs and bad ACPI behaviour on older versions
1649 * 2. BIOS or EC fw with known bugs that trigger on Linux
1651 * 3. BIOS with known reduced functionality in older versions
1653 * We recommend the latest BIOS and EC version.
1654 * We only support the latest BIOS and EC fw version as a rule.
1656 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1657 * Information from users in ThinkWiki
1659 * WARNING: we use this table also to detect that the machine is
1660 * a ThinkPad in some cases, so don't remove entries lightly.
1663 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1664 { .vendor = (__v), \
1665 .bios = TPID(__id1, __id2), \
1666 .ec = TPACPI_MATCH_ANY, \
1667 .quirks = TPACPI_MATCH_ANY << 16 \
1668 | (__bv1) << 8 | (__bv2) }
1670 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
1671 __eid, __ev1, __ev2) \
1672 { .vendor = (__v), \
1673 .bios = TPID(__bid1, __bid2), \
1675 .quirks = (__ev1) << 24 | (__ev2) << 16 \
1676 | (__bv1) << 8 | (__bv2) }
1678 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1679 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1681 /* Outdated IBM BIOSes often lack the EC id string */
1682 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1683 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1684 __bv1, __bv2, TPID(__id1, __id2), \
1686 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1687 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1690 /* Outdated IBM BIOSes often lack the EC id string */
1691 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1692 __eid1, __eid2, __ev1, __ev2) \
1693 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1694 __bv1, __bv2, TPID(__eid1, __eid2), \
1696 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1697 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1700 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1701 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1703 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1704 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
1705 __bv1, __bv2, TPID(__id1, __id2), \
1708 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1709 __eid1, __eid2, __ev1, __ev2) \
1710 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
1711 __bv1, __bv2, TPID(__eid1, __eid2), \
1714 static const struct tpacpi_quirk tpacpi_bios_version_qtable
[] __initconst
= {
1715 /* Numeric models ------------------ */
1716 /* FW MODEL BIOS VERS */
1717 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1718 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1719 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1720 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1721 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1722 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1723 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1724 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1725 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1727 /* A-series ------------------------- */
1728 /* FW MODEL BIOS VERS EC VERS */
1729 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1730 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1731 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1732 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1733 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1734 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1735 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1736 TPV_QI0('1', '3', '2', '0'), /* A22m */
1737 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1738 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1739 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1741 /* G-series ------------------------- */
1742 /* FW MODEL BIOS VERS */
1743 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1744 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1746 /* R-series, T-series --------------- */
1747 /* FW MODEL BIOS VERS EC VERS */
1748 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1749 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1750 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1751 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1752 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1753 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1754 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1755 T40/p, T41/p, T42/p (1) */
1756 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1757 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1758 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1759 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1761 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1762 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1763 TPV_QI0('1', '6', '3', '2'), /* T22 */
1764 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1765 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1766 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1768 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1769 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
1770 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
1772 /* BIOS FW BIOS VERS EC FW EC VERS */
1773 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1774 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1776 /* X-series ------------------------- */
1777 /* FW MODEL BIOS VERS EC VERS */
1778 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1779 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1780 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1781 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1782 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1783 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1784 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1786 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1787 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
1789 /* (0) - older versions lack DMI EC fw string and functionality */
1790 /* (1) - older versions known to lack functionality */
1801 static void __init
tpacpi_check_outdated_fw(void)
1803 unsigned long fwvers
;
1804 u16 ec_version
, bios_version
;
1806 fwvers
= tpacpi_check_quirks(tpacpi_bios_version_qtable
,
1807 ARRAY_SIZE(tpacpi_bios_version_qtable
));
1812 bios_version
= fwvers
& 0xffffU
;
1813 ec_version
= (fwvers
>> 16) & 0xffffU
;
1815 /* note that unknown versions are set to 0x0000 and we use that */
1816 if ((bios_version
> thinkpad_id
.bios_release
) ||
1817 (ec_version
> thinkpad_id
.ec_release
&&
1818 ec_version
!= TPACPI_MATCH_ANY
)) {
1820 * The changelogs would let us track down the exact
1821 * reason, but it is just too much of a pain to track
1822 * it. We only list BIOSes that are either really
1823 * broken, or really stable to begin with, so it is
1824 * best if the user upgrades the firmware anyway.
1826 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n");
1827 pr_warn("WARNING: This firmware may be missing critical bug "
1828 "fixes and/or important features\n");
1832 static bool __init
tpacpi_is_fw_known(void)
1834 return tpacpi_check_quirks(tpacpi_bios_version_qtable
,
1835 ARRAY_SIZE(tpacpi_bios_version_qtable
)) != 0;
1838 /****************************************************************************
1839 ****************************************************************************
1843 ****************************************************************************
1844 ****************************************************************************/
1846 /*************************************************************************
1847 * thinkpad-acpi metadata subdriver
1850 static int thinkpad_acpi_driver_read(struct seq_file
*m
)
1852 seq_printf(m
, "driver:\t\t%s\n", TPACPI_DESC
);
1853 seq_printf(m
, "version:\t%s\n", TPACPI_VERSION
);
1857 static struct ibm_struct thinkpad_acpi_driver_data
= {
1859 .read
= thinkpad_acpi_driver_read
,
1862 /*************************************************************************
1867 * ThinkPad firmware event model
1869 * The ThinkPad firmware has two main event interfaces: normal ACPI
1870 * notifications (which follow the ACPI standard), and a private event
1873 * The private event interface also issues events for the hotkeys. As
1874 * the driver gained features, the event handling code ended up being
1875 * built around the hotkey subdriver. This will need to be refactored
1876 * to a more formal event API eventually.
1878 * Some "hotkeys" are actually supposed to be used as event reports,
1879 * such as "brightness has changed", "volume has changed", depending on
1880 * the ThinkPad model and how the firmware is operating.
1882 * Unlike other classes, hotkey-class events have mask/unmask control on
1883 * non-ancient firmware. However, how it behaves changes a lot with the
1884 * firmware model and version.
1887 enum { /* hot key scan codes (derived from ACPI DSDT) */
1888 TP_ACPI_HOTKEYSCAN_FNF1
= 0,
1889 TP_ACPI_HOTKEYSCAN_FNF2
,
1890 TP_ACPI_HOTKEYSCAN_FNF3
,
1891 TP_ACPI_HOTKEYSCAN_FNF4
,
1892 TP_ACPI_HOTKEYSCAN_FNF5
,
1893 TP_ACPI_HOTKEYSCAN_FNF6
,
1894 TP_ACPI_HOTKEYSCAN_FNF7
,
1895 TP_ACPI_HOTKEYSCAN_FNF8
,
1896 TP_ACPI_HOTKEYSCAN_FNF9
,
1897 TP_ACPI_HOTKEYSCAN_FNF10
,
1898 TP_ACPI_HOTKEYSCAN_FNF11
,
1899 TP_ACPI_HOTKEYSCAN_FNF12
,
1900 TP_ACPI_HOTKEYSCAN_FNBACKSPACE
,
1901 TP_ACPI_HOTKEYSCAN_FNINSERT
,
1902 TP_ACPI_HOTKEYSCAN_FNDELETE
,
1903 TP_ACPI_HOTKEYSCAN_FNHOME
,
1904 TP_ACPI_HOTKEYSCAN_FNEND
,
1905 TP_ACPI_HOTKEYSCAN_FNPAGEUP
,
1906 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN
,
1907 TP_ACPI_HOTKEYSCAN_FNSPACE
,
1908 TP_ACPI_HOTKEYSCAN_VOLUMEUP
,
1909 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
,
1910 TP_ACPI_HOTKEYSCAN_MUTE
,
1911 TP_ACPI_HOTKEYSCAN_THINKPAD
,
1912 TP_ACPI_HOTKEYSCAN_UNK1
,
1913 TP_ACPI_HOTKEYSCAN_UNK2
,
1914 TP_ACPI_HOTKEYSCAN_UNK3
,
1915 TP_ACPI_HOTKEYSCAN_UNK4
,
1916 TP_ACPI_HOTKEYSCAN_UNK5
,
1917 TP_ACPI_HOTKEYSCAN_UNK6
,
1918 TP_ACPI_HOTKEYSCAN_UNK7
,
1919 TP_ACPI_HOTKEYSCAN_UNK8
,
1921 /* Hotkey keymap size */
1922 TPACPI_HOTKEY_MAP_LEN
1925 enum { /* Keys/events available through NVRAM polling */
1926 TPACPI_HKEY_NVRAM_KNOWN_MASK
= 0x00fb88c0U
,
1927 TPACPI_HKEY_NVRAM_GOOD_MASK
= 0x00fb8000U
,
1930 enum { /* Positions of some of the keys in hotkey masks */
1931 TP_ACPI_HKEY_DISPSWTCH_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF7
,
1932 TP_ACPI_HKEY_DISPXPAND_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF8
,
1933 TP_ACPI_HKEY_HIBERNATE_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF12
,
1934 TP_ACPI_HKEY_BRGHTUP_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNHOME
,
1935 TP_ACPI_HKEY_BRGHTDWN_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNEND
,
1936 TP_ACPI_HKEY_THNKLGHT_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP
,
1937 TP_ACPI_HKEY_ZOOM_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNSPACE
,
1938 TP_ACPI_HKEY_VOLUP_MASK
= 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP
,
1939 TP_ACPI_HKEY_VOLDWN_MASK
= 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
,
1940 TP_ACPI_HKEY_MUTE_MASK
= 1 << TP_ACPI_HOTKEYSCAN_MUTE
,
1941 TP_ACPI_HKEY_THINKPAD_MASK
= 1 << TP_ACPI_HOTKEYSCAN_THINKPAD
,
1944 enum { /* NVRAM to ACPI HKEY group map */
1945 TP_NVRAM_HKEY_GROUP_HK2
= TP_ACPI_HKEY_THINKPAD_MASK
|
1946 TP_ACPI_HKEY_ZOOM_MASK
|
1947 TP_ACPI_HKEY_DISPSWTCH_MASK
|
1948 TP_ACPI_HKEY_HIBERNATE_MASK
,
1949 TP_NVRAM_HKEY_GROUP_BRIGHTNESS
= TP_ACPI_HKEY_BRGHTUP_MASK
|
1950 TP_ACPI_HKEY_BRGHTDWN_MASK
,
1951 TP_NVRAM_HKEY_GROUP_VOLUME
= TP_ACPI_HKEY_VOLUP_MASK
|
1952 TP_ACPI_HKEY_VOLDWN_MASK
|
1953 TP_ACPI_HKEY_MUTE_MASK
,
1956 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1957 struct tp_nvram_state
{
1958 u16 thinkpad_toggle
:1;
1960 u16 display_toggle
:1;
1961 u16 thinklight_toggle
:1;
1962 u16 hibernate_toggle
:1;
1963 u16 displayexp_toggle
:1;
1964 u16 display_state
:1;
1965 u16 brightness_toggle
:1;
1966 u16 volume_toggle
:1;
1969 u8 brightness_level
;
1973 /* kthread for the hotkey poller */
1974 static struct task_struct
*tpacpi_hotkey_task
;
1977 * Acquire mutex to write poller control variables as an
1980 * Increment hotkey_config_change when changing them if you
1981 * want the kthread to forget old state.
1983 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1985 static struct mutex hotkey_thread_data_mutex
;
1986 static unsigned int hotkey_config_change
;
1989 * hotkey poller control variables
1991 * Must be atomic or readers will also need to acquire mutex
1993 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1994 * should be used only when the changes need to be taken as
1995 * a block, OR when one needs to force the kthread to forget
1998 static u32 hotkey_source_mask
; /* bit mask 0=ACPI,1=NVRAM */
1999 static unsigned int hotkey_poll_freq
= 10; /* Hz */
2001 #define HOTKEY_CONFIG_CRITICAL_START \
2003 mutex_lock(&hotkey_thread_data_mutex); \
2004 hotkey_config_change++; \
2006 #define HOTKEY_CONFIG_CRITICAL_END \
2007 mutex_unlock(&hotkey_thread_data_mutex);
2009 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2011 #define hotkey_source_mask 0U
2012 #define HOTKEY_CONFIG_CRITICAL_START
2013 #define HOTKEY_CONFIG_CRITICAL_END
2015 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2017 static struct mutex hotkey_mutex
;
2019 static enum { /* Reasons for waking up */
2020 TP_ACPI_WAKEUP_NONE
= 0, /* None or unknown */
2021 TP_ACPI_WAKEUP_BAYEJ
, /* Bay ejection request */
2022 TP_ACPI_WAKEUP_UNDOCK
, /* Undock request */
2023 } hotkey_wakeup_reason
;
2025 static int hotkey_autosleep_ack
;
2027 static u32 hotkey_orig_mask
; /* events the BIOS had enabled */
2028 static u32 hotkey_all_mask
; /* all events supported in fw */
2029 static u32 hotkey_reserved_mask
; /* events better left disabled */
2030 static u32 hotkey_driver_mask
; /* events needed by the driver */
2031 static u32 hotkey_user_mask
; /* events visible to userspace */
2032 static u32 hotkey_acpi_mask
; /* events enabled in firmware */
2034 static u16
*hotkey_keycode_map
;
2036 static struct attribute_set
*hotkey_dev_attributes
;
2038 static void tpacpi_driver_event(const unsigned int hkey_event
);
2039 static void hotkey_driver_event(const unsigned int scancode
);
2040 static void hotkey_poll_setup(const bool may_warn
);
2042 /* HKEY.MHKG() return bits */
2043 #define TP_HOTKEY_TABLET_MASK (1 << 3)
2045 static int hotkey_get_wlsw(void)
2049 if (!tp_features
.hotkey_wlsw
)
2052 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
2054 return (tpacpi_wlsw_emulstate
) ?
2055 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
2058 if (!acpi_evalf(hkey_handle
, &status
, "WLSW", "d"))
2061 return (status
) ? TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
2064 static int hotkey_get_tablet_mode(int *status
)
2068 if (!acpi_evalf(hkey_handle
, &s
, "MHKG", "d"))
2071 *status
= ((s
& TP_HOTKEY_TABLET_MASK
) != 0);
2076 * Reads current event mask from firmware, and updates
2077 * hotkey_acpi_mask accordingly. Also resets any bits
2078 * from hotkey_user_mask that are unavailable to be
2079 * delivered (shadow requirement of the userspace ABI).
2081 * Call with hotkey_mutex held
2083 static int hotkey_mask_get(void)
2085 if (tp_features
.hotkey_mask
) {
2088 if (!acpi_evalf(hkey_handle
, &m
, "DHKN", "d"))
2091 hotkey_acpi_mask
= m
;
2093 /* no mask support doesn't mean no event support... */
2094 hotkey_acpi_mask
= hotkey_all_mask
;
2097 /* sync userspace-visible mask */
2098 hotkey_user_mask
&= (hotkey_acpi_mask
| hotkey_source_mask
);
2103 void static hotkey_mask_warn_incomplete_mask(void)
2105 /* log only what the user can fix... */
2106 const u32 wantedmask
= hotkey_driver_mask
&
2107 ~(hotkey_acpi_mask
| hotkey_source_mask
) &
2108 (hotkey_all_mask
| TPACPI_HKEY_NVRAM_KNOWN_MASK
);
2111 pr_notice("required events 0x%08x not enabled!\n", wantedmask
);
2115 * Set the firmware mask when supported
2117 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
2119 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
2121 * Call with hotkey_mutex held
2123 static int hotkey_mask_set(u32 mask
)
2128 const u32 fwmask
= mask
& ~hotkey_source_mask
;
2130 if (tp_features
.hotkey_mask
) {
2131 for (i
= 0; i
< 32; i
++) {
2132 if (!acpi_evalf(hkey_handle
,
2133 NULL
, "MHKM", "vdd", i
+ 1,
2134 !!(mask
& (1 << i
)))) {
2142 * We *must* make an inconditional call to hotkey_mask_get to
2143 * refresh hotkey_acpi_mask and update hotkey_user_mask
2145 * Take the opportunity to also log when we cannot _enable_
2148 if (!hotkey_mask_get() && !rc
&& (fwmask
& ~hotkey_acpi_mask
)) {
2149 pr_notice("asked for hotkey mask 0x%08x, but "
2150 "firmware forced it to 0x%08x\n",
2151 fwmask
, hotkey_acpi_mask
);
2154 if (tpacpi_lifecycle
!= TPACPI_LIFE_EXITING
)
2155 hotkey_mask_warn_incomplete_mask();
2161 * Sets hotkey_user_mask and tries to set the firmware mask
2163 * Call with hotkey_mutex held
2165 static int hotkey_user_mask_set(const u32 mask
)
2169 /* Give people a chance to notice they are doing something that
2170 * is bound to go boom on their users sooner or later */
2171 if (!tp_warned
.hotkey_mask_ff
&&
2172 (mask
== 0xffff || mask
== 0xffffff ||
2173 mask
== 0xffffffff)) {
2174 tp_warned
.hotkey_mask_ff
= 1;
2175 pr_notice("setting the hotkey mask to 0x%08x is likely "
2176 "not the best way to go about it\n", mask
);
2177 pr_notice("please consider using the driver defaults, "
2178 "and refer to up-to-date thinkpad-acpi "
2182 /* Try to enable what the user asked for, plus whatever we need.
2183 * this syncs everything but won't enable bits in hotkey_user_mask */
2184 rc
= hotkey_mask_set((mask
| hotkey_driver_mask
) & ~hotkey_source_mask
);
2186 /* Enable the available bits in hotkey_user_mask */
2187 hotkey_user_mask
= mask
& (hotkey_acpi_mask
| hotkey_source_mask
);
2193 * Sets the driver hotkey mask.
2195 * Can be called even if the hotkey subdriver is inactive
2197 static int tpacpi_hotkey_driver_mask_set(const u32 mask
)
2201 /* Do the right thing if hotkey_init has not been called yet */
2202 if (!tp_features
.hotkey
) {
2203 hotkey_driver_mask
= mask
;
2207 mutex_lock(&hotkey_mutex
);
2209 HOTKEY_CONFIG_CRITICAL_START
2210 hotkey_driver_mask
= mask
;
2211 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2212 hotkey_source_mask
|= (mask
& ~hotkey_all_mask
);
2214 HOTKEY_CONFIG_CRITICAL_END
2216 rc
= hotkey_mask_set((hotkey_acpi_mask
| hotkey_driver_mask
) &
2217 ~hotkey_source_mask
);
2218 hotkey_poll_setup(true);
2220 mutex_unlock(&hotkey_mutex
);
2225 static int hotkey_status_get(int *status
)
2227 if (!acpi_evalf(hkey_handle
, status
, "DHKC", "d"))
2233 static int hotkey_status_set(bool enable
)
2235 if (!acpi_evalf(hkey_handle
, NULL
, "MHKC", "vd", enable
? 1 : 0))
2241 static void tpacpi_input_send_tabletsw(void)
2245 if (tp_features
.hotkey_tablet
&&
2246 !hotkey_get_tablet_mode(&state
)) {
2247 mutex_lock(&tpacpi_inputdev_send_mutex
);
2249 input_report_switch(tpacpi_inputdev
,
2250 SW_TABLET_MODE
, !!state
);
2251 input_sync(tpacpi_inputdev
);
2253 mutex_unlock(&tpacpi_inputdev_send_mutex
);
2257 /* Do NOT call without validating scancode first */
2258 static void tpacpi_input_send_key(const unsigned int scancode
)
2260 const unsigned int keycode
= hotkey_keycode_map
[scancode
];
2262 if (keycode
!= KEY_RESERVED
) {
2263 mutex_lock(&tpacpi_inputdev_send_mutex
);
2265 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
, scancode
);
2266 input_report_key(tpacpi_inputdev
, keycode
, 1);
2267 input_sync(tpacpi_inputdev
);
2269 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
, scancode
);
2270 input_report_key(tpacpi_inputdev
, keycode
, 0);
2271 input_sync(tpacpi_inputdev
);
2273 mutex_unlock(&tpacpi_inputdev_send_mutex
);
2277 /* Do NOT call without validating scancode first */
2278 static void tpacpi_input_send_key_masked(const unsigned int scancode
)
2280 hotkey_driver_event(scancode
);
2281 if (hotkey_user_mask
& (1 << scancode
))
2282 tpacpi_input_send_key(scancode
);
2285 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2286 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
;
2288 /* Do NOT call without validating scancode first */
2289 static void tpacpi_hotkey_send_key(unsigned int scancode
)
2291 tpacpi_input_send_key_masked(scancode
);
2294 static void hotkey_read_nvram(struct tp_nvram_state
*n
, const u32 m
)
2298 if (m
& TP_NVRAM_HKEY_GROUP_HK2
) {
2299 d
= nvram_read_byte(TP_NVRAM_ADDR_HK2
);
2300 n
->thinkpad_toggle
= !!(d
& TP_NVRAM_MASK_HKT_THINKPAD
);
2301 n
->zoom_toggle
= !!(d
& TP_NVRAM_MASK_HKT_ZOOM
);
2302 n
->display_toggle
= !!(d
& TP_NVRAM_MASK_HKT_DISPLAY
);
2303 n
->hibernate_toggle
= !!(d
& TP_NVRAM_MASK_HKT_HIBERNATE
);
2305 if (m
& TP_ACPI_HKEY_THNKLGHT_MASK
) {
2306 d
= nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT
);
2307 n
->thinklight_toggle
= !!(d
& TP_NVRAM_MASK_THINKLIGHT
);
2309 if (m
& TP_ACPI_HKEY_DISPXPAND_MASK
) {
2310 d
= nvram_read_byte(TP_NVRAM_ADDR_VIDEO
);
2311 n
->displayexp_toggle
=
2312 !!(d
& TP_NVRAM_MASK_HKT_DISPEXPND
);
2314 if (m
& TP_NVRAM_HKEY_GROUP_BRIGHTNESS
) {
2315 d
= nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
);
2316 n
->brightness_level
= (d
& TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
2317 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
2318 n
->brightness_toggle
=
2319 !!(d
& TP_NVRAM_MASK_HKT_BRIGHTNESS
);
2321 if (m
& TP_NVRAM_HKEY_GROUP_VOLUME
) {
2322 d
= nvram_read_byte(TP_NVRAM_ADDR_MIXER
);
2323 n
->volume_level
= (d
& TP_NVRAM_MASK_LEVEL_VOLUME
)
2324 >> TP_NVRAM_POS_LEVEL_VOLUME
;
2325 n
->mute
= !!(d
& TP_NVRAM_MASK_MUTE
);
2326 n
->volume_toggle
= !!(d
& TP_NVRAM_MASK_HKT_VOLUME
);
2330 static void hotkey_compare_and_issue_event(struct tp_nvram_state
*oldn
,
2331 struct tp_nvram_state
*newn
,
2332 const u32 event_mask
)
2335 #define TPACPI_COMPARE_KEY(__scancode, __member) \
2337 if ((event_mask & (1 << __scancode)) && \
2338 oldn->__member != newn->__member) \
2339 tpacpi_hotkey_send_key(__scancode); \
2342 #define TPACPI_MAY_SEND_KEY(__scancode) \
2344 if (event_mask & (1 << __scancode)) \
2345 tpacpi_hotkey_send_key(__scancode); \
2348 void issue_volchange(const unsigned int oldvol
,
2349 const unsigned int newvol
)
2351 unsigned int i
= oldvol
;
2353 while (i
> newvol
) {
2354 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
2357 while (i
< newvol
) {
2358 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
2363 void issue_brightnesschange(const unsigned int oldbrt
,
2364 const unsigned int newbrt
)
2366 unsigned int i
= oldbrt
;
2368 while (i
> newbrt
) {
2369 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
2372 while (i
< newbrt
) {
2373 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
2378 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD
, thinkpad_toggle
);
2379 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE
, zoom_toggle
);
2380 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7
, display_toggle
);
2381 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12
, hibernate_toggle
);
2383 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP
, thinklight_toggle
);
2385 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8
, displayexp_toggle
);
2390 * This code is supposed to duplicate the IBM firmware behaviour:
2391 * - Pressing MUTE issues mute hotkey message, even when already mute
2392 * - Pressing Volume up/down issues volume up/down hotkey messages,
2393 * even when already at maximum or minimum volume
2394 * - The act of unmuting issues volume up/down notification,
2395 * depending which key was used to unmute
2397 * We are constrained to what the NVRAM can tell us, which is not much
2398 * and certainly not enough if more than one volume hotkey was pressed
2399 * since the last poll cycle.
2401 * Just to make our life interesting, some newer Lenovo ThinkPads have
2402 * bugs in the BIOS and may fail to update volume_toggle properly.
2407 oldn
->volume_toggle
!= newn
->volume_toggle
||
2408 oldn
->volume_level
!= newn
->volume_level
) {
2409 /* recently muted, or repeated mute keypress, or
2410 * multiple presses ending in mute */
2411 issue_volchange(oldn
->volume_level
, newn
->volume_level
);
2412 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE
);
2417 /* recently unmuted, issue 'unmute' keypress */
2418 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
2420 if (oldn
->volume_level
!= newn
->volume_level
) {
2421 issue_volchange(oldn
->volume_level
, newn
->volume_level
);
2422 } else if (oldn
->volume_toggle
!= newn
->volume_toggle
) {
2423 /* repeated vol up/down keypress at end of scale ? */
2424 if (newn
->volume_level
== 0)
2425 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
2426 else if (newn
->volume_level
>= TP_NVRAM_LEVEL_VOLUME_MAX
)
2427 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
2431 /* handle brightness */
2432 if (oldn
->brightness_level
!= newn
->brightness_level
) {
2433 issue_brightnesschange(oldn
->brightness_level
,
2434 newn
->brightness_level
);
2435 } else if (oldn
->brightness_toggle
!= newn
->brightness_toggle
) {
2436 /* repeated key presses that didn't change state */
2437 if (newn
->brightness_level
== 0)
2438 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
2439 else if (newn
->brightness_level
>= bright_maxlvl
2440 && !tp_features
.bright_unkfw
)
2441 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
2444 #undef TPACPI_COMPARE_KEY
2445 #undef TPACPI_MAY_SEND_KEY
2451 * We track all events in hotkey_source_mask all the time, since
2452 * most of them are edge-based. We only issue those requested by
2453 * hotkey_user_mask or hotkey_driver_mask, though.
2455 static int hotkey_kthread(void *data
)
2457 struct tp_nvram_state s
[2];
2458 u32 poll_mask
, event_mask
;
2459 unsigned int si
, so
;
2461 unsigned int change_detector
;
2462 unsigned int poll_freq
;
2465 if (tpacpi_lifecycle
== TPACPI_LIFE_EXITING
)
2474 /* Initial state for compares */
2475 mutex_lock(&hotkey_thread_data_mutex
);
2476 change_detector
= hotkey_config_change
;
2477 poll_mask
= hotkey_source_mask
;
2478 event_mask
= hotkey_source_mask
&
2479 (hotkey_driver_mask
| hotkey_user_mask
);
2480 poll_freq
= hotkey_poll_freq
;
2481 mutex_unlock(&hotkey_thread_data_mutex
);
2482 hotkey_read_nvram(&s
[so
], poll_mask
);
2484 while (!kthread_should_stop()) {
2486 if (likely(poll_freq
))
2489 t
= 100; /* should never happen... */
2491 t
= msleep_interruptible(t
);
2492 if (unlikely(kthread_freezable_should_stop(&was_frozen
)))
2495 if (t
> 0 && !was_frozen
)
2498 mutex_lock(&hotkey_thread_data_mutex
);
2499 if (was_frozen
|| hotkey_config_change
!= change_detector
) {
2500 /* forget old state on thaw or config change */
2503 change_detector
= hotkey_config_change
;
2505 poll_mask
= hotkey_source_mask
;
2506 event_mask
= hotkey_source_mask
&
2507 (hotkey_driver_mask
| hotkey_user_mask
);
2508 poll_freq
= hotkey_poll_freq
;
2509 mutex_unlock(&hotkey_thread_data_mutex
);
2511 if (likely(poll_mask
)) {
2512 hotkey_read_nvram(&s
[si
], poll_mask
);
2513 if (likely(si
!= so
)) {
2514 hotkey_compare_and_issue_event(&s
[so
], &s
[si
],
2527 /* call with hotkey_mutex held */
2528 static void hotkey_poll_stop_sync(void)
2530 if (tpacpi_hotkey_task
) {
2531 kthread_stop(tpacpi_hotkey_task
);
2532 tpacpi_hotkey_task
= NULL
;
2536 /* call with hotkey_mutex held */
2537 static void hotkey_poll_setup(const bool may_warn
)
2539 const u32 poll_driver_mask
= hotkey_driver_mask
& hotkey_source_mask
;
2540 const u32 poll_user_mask
= hotkey_user_mask
& hotkey_source_mask
;
2542 if (hotkey_poll_freq
> 0 &&
2543 (poll_driver_mask
||
2544 (poll_user_mask
&& tpacpi_inputdev
->users
> 0))) {
2545 if (!tpacpi_hotkey_task
) {
2546 tpacpi_hotkey_task
= kthread_run(hotkey_kthread
,
2547 NULL
, TPACPI_NVRAM_KTHREAD_NAME
);
2548 if (IS_ERR(tpacpi_hotkey_task
)) {
2549 tpacpi_hotkey_task
= NULL
;
2550 pr_err("could not create kernel thread "
2551 "for hotkey polling\n");
2555 hotkey_poll_stop_sync();
2556 if (may_warn
&& (poll_driver_mask
|| poll_user_mask
) &&
2557 hotkey_poll_freq
== 0) {
2558 pr_notice("hot keys 0x%08x and/or events 0x%08x "
2559 "require polling, which is currently "
2561 poll_user_mask
, poll_driver_mask
);
2566 static void hotkey_poll_setup_safe(const bool may_warn
)
2568 mutex_lock(&hotkey_mutex
);
2569 hotkey_poll_setup(may_warn
);
2570 mutex_unlock(&hotkey_mutex
);
2573 /* call with hotkey_mutex held */
2574 static void hotkey_poll_set_freq(unsigned int freq
)
2577 hotkey_poll_stop_sync();
2579 hotkey_poll_freq
= freq
;
2582 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2584 static void hotkey_poll_setup(const bool __unused
)
2588 static void hotkey_poll_setup_safe(const bool __unused
)
2592 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2594 static int hotkey_inputdev_open(struct input_dev
*dev
)
2596 switch (tpacpi_lifecycle
) {
2597 case TPACPI_LIFE_INIT
:
2598 case TPACPI_LIFE_RUNNING
:
2599 hotkey_poll_setup_safe(false);
2601 case TPACPI_LIFE_EXITING
:
2605 /* Should only happen if tpacpi_lifecycle is corrupt */
2610 static void hotkey_inputdev_close(struct input_dev
*dev
)
2612 /* disable hotkey polling when possible */
2613 if (tpacpi_lifecycle
!= TPACPI_LIFE_EXITING
&&
2614 !(hotkey_source_mask
& hotkey_driver_mask
))
2615 hotkey_poll_setup_safe(false);
2618 /* sysfs hotkey enable ------------------------------------------------- */
2619 static ssize_t
hotkey_enable_show(struct device
*dev
,
2620 struct device_attribute
*attr
,
2625 printk_deprecated_attribute("hotkey_enable",
2626 "Hotkey reporting is always enabled");
2628 res
= hotkey_status_get(&status
);
2632 return snprintf(buf
, PAGE_SIZE
, "%d\n", status
);
2635 static ssize_t
hotkey_enable_store(struct device
*dev
,
2636 struct device_attribute
*attr
,
2637 const char *buf
, size_t count
)
2641 printk_deprecated_attribute("hotkey_enable",
2642 "Hotkeys can be disabled through hotkey_mask");
2644 if (parse_strtoul(buf
, 1, &t
))
2653 static struct device_attribute dev_attr_hotkey_enable
=
2654 __ATTR(hotkey_enable
, S_IWUSR
| S_IRUGO
,
2655 hotkey_enable_show
, hotkey_enable_store
);
2657 /* sysfs hotkey mask --------------------------------------------------- */
2658 static ssize_t
hotkey_mask_show(struct device
*dev
,
2659 struct device_attribute
*attr
,
2662 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_user_mask
);
2665 static ssize_t
hotkey_mask_store(struct device
*dev
,
2666 struct device_attribute
*attr
,
2667 const char *buf
, size_t count
)
2672 if (parse_strtoul(buf
, 0xffffffffUL
, &t
))
2675 if (mutex_lock_killable(&hotkey_mutex
))
2676 return -ERESTARTSYS
;
2678 res
= hotkey_user_mask_set(t
);
2680 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2681 hotkey_poll_setup(true);
2684 mutex_unlock(&hotkey_mutex
);
2686 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t
);
2688 return (res
) ? res
: count
;
2691 static struct device_attribute dev_attr_hotkey_mask
=
2692 __ATTR(hotkey_mask
, S_IWUSR
| S_IRUGO
,
2693 hotkey_mask_show
, hotkey_mask_store
);
2695 /* sysfs hotkey bios_enabled ------------------------------------------- */
2696 static ssize_t
hotkey_bios_enabled_show(struct device
*dev
,
2697 struct device_attribute
*attr
,
2700 return sprintf(buf
, "0\n");
2703 static struct device_attribute dev_attr_hotkey_bios_enabled
=
2704 __ATTR(hotkey_bios_enabled
, S_IRUGO
, hotkey_bios_enabled_show
, NULL
);
2706 /* sysfs hotkey bios_mask ---------------------------------------------- */
2707 static ssize_t
hotkey_bios_mask_show(struct device
*dev
,
2708 struct device_attribute
*attr
,
2711 printk_deprecated_attribute("hotkey_bios_mask",
2712 "This attribute is useless.");
2713 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_orig_mask
);
2716 static struct device_attribute dev_attr_hotkey_bios_mask
=
2717 __ATTR(hotkey_bios_mask
, S_IRUGO
, hotkey_bios_mask_show
, NULL
);
2719 /* sysfs hotkey all_mask ----------------------------------------------- */
2720 static ssize_t
hotkey_all_mask_show(struct device
*dev
,
2721 struct device_attribute
*attr
,
2724 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
2725 hotkey_all_mask
| hotkey_source_mask
);
2728 static struct device_attribute dev_attr_hotkey_all_mask
=
2729 __ATTR(hotkey_all_mask
, S_IRUGO
, hotkey_all_mask_show
, NULL
);
2731 /* sysfs hotkey recommended_mask --------------------------------------- */
2732 static ssize_t
hotkey_recommended_mask_show(struct device
*dev
,
2733 struct device_attribute
*attr
,
2736 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
2737 (hotkey_all_mask
| hotkey_source_mask
)
2738 & ~hotkey_reserved_mask
);
2741 static struct device_attribute dev_attr_hotkey_recommended_mask
=
2742 __ATTR(hotkey_recommended_mask
, S_IRUGO
,
2743 hotkey_recommended_mask_show
, NULL
);
2745 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2747 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
2748 static ssize_t
hotkey_source_mask_show(struct device
*dev
,
2749 struct device_attribute
*attr
,
2752 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_source_mask
);
2755 static ssize_t
hotkey_source_mask_store(struct device
*dev
,
2756 struct device_attribute
*attr
,
2757 const char *buf
, size_t count
)
2763 if (parse_strtoul(buf
, 0xffffffffUL
, &t
) ||
2764 ((t
& ~TPACPI_HKEY_NVRAM_KNOWN_MASK
) != 0))
2767 if (mutex_lock_killable(&hotkey_mutex
))
2768 return -ERESTARTSYS
;
2770 HOTKEY_CONFIG_CRITICAL_START
2771 hotkey_source_mask
= t
;
2772 HOTKEY_CONFIG_CRITICAL_END
2774 rc
= hotkey_mask_set((hotkey_user_mask
| hotkey_driver_mask
) &
2775 ~hotkey_source_mask
);
2776 hotkey_poll_setup(true);
2778 /* check if events needed by the driver got disabled */
2779 r_ev
= hotkey_driver_mask
& ~(hotkey_acpi_mask
& hotkey_all_mask
)
2780 & ~hotkey_source_mask
& TPACPI_HKEY_NVRAM_KNOWN_MASK
;
2782 mutex_unlock(&hotkey_mutex
);
2785 pr_err("hotkey_source_mask: "
2786 "failed to update the firmware event mask!\n");
2789 pr_notice("hotkey_source_mask: "
2790 "some important events were disabled: 0x%04x\n",
2793 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t
);
2795 return (rc
< 0) ? rc
: count
;
2798 static struct device_attribute dev_attr_hotkey_source_mask
=
2799 __ATTR(hotkey_source_mask
, S_IWUSR
| S_IRUGO
,
2800 hotkey_source_mask_show
, hotkey_source_mask_store
);
2802 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2803 static ssize_t
hotkey_poll_freq_show(struct device
*dev
,
2804 struct device_attribute
*attr
,
2807 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_poll_freq
);
2810 static ssize_t
hotkey_poll_freq_store(struct device
*dev
,
2811 struct device_attribute
*attr
,
2812 const char *buf
, size_t count
)
2816 if (parse_strtoul(buf
, 25, &t
))
2819 if (mutex_lock_killable(&hotkey_mutex
))
2820 return -ERESTARTSYS
;
2822 hotkey_poll_set_freq(t
);
2823 hotkey_poll_setup(true);
2825 mutex_unlock(&hotkey_mutex
);
2827 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t
);
2832 static struct device_attribute dev_attr_hotkey_poll_freq
=
2833 __ATTR(hotkey_poll_freq
, S_IWUSR
| S_IRUGO
,
2834 hotkey_poll_freq_show
, hotkey_poll_freq_store
);
2836 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2838 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
2839 static ssize_t
hotkey_radio_sw_show(struct device
*dev
,
2840 struct device_attribute
*attr
,
2844 res
= hotkey_get_wlsw();
2848 /* Opportunistic update */
2849 tpacpi_rfk_update_hwblock_state((res
== TPACPI_RFK_RADIO_OFF
));
2851 return snprintf(buf
, PAGE_SIZE
, "%d\n",
2852 (res
== TPACPI_RFK_RADIO_OFF
) ? 0 : 1);
2855 static struct device_attribute dev_attr_hotkey_radio_sw
=
2856 __ATTR(hotkey_radio_sw
, S_IRUGO
, hotkey_radio_sw_show
, NULL
);
2858 static void hotkey_radio_sw_notify_change(void)
2860 if (tp_features
.hotkey_wlsw
)
2861 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2865 /* sysfs hotkey tablet mode (pollable) --------------------------------- */
2866 static ssize_t
hotkey_tablet_mode_show(struct device
*dev
,
2867 struct device_attribute
*attr
,
2871 res
= hotkey_get_tablet_mode(&s
);
2875 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!s
);
2878 static struct device_attribute dev_attr_hotkey_tablet_mode
=
2879 __ATTR(hotkey_tablet_mode
, S_IRUGO
, hotkey_tablet_mode_show
, NULL
);
2881 static void hotkey_tablet_mode_notify_change(void)
2883 if (tp_features
.hotkey_tablet
)
2884 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2885 "hotkey_tablet_mode");
2888 /* sysfs wakeup reason (pollable) -------------------------------------- */
2889 static ssize_t
hotkey_wakeup_reason_show(struct device
*dev
,
2890 struct device_attribute
*attr
,
2893 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_wakeup_reason
);
2896 static struct device_attribute dev_attr_hotkey_wakeup_reason
=
2897 __ATTR(wakeup_reason
, S_IRUGO
, hotkey_wakeup_reason_show
, NULL
);
2899 static void hotkey_wakeup_reason_notify_change(void)
2901 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2905 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
2906 static ssize_t
hotkey_wakeup_hotunplug_complete_show(struct device
*dev
,
2907 struct device_attribute
*attr
,
2910 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_autosleep_ack
);
2913 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete
=
2914 __ATTR(wakeup_hotunplug_complete
, S_IRUGO
,
2915 hotkey_wakeup_hotunplug_complete_show
, NULL
);
2917 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
2919 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2920 "wakeup_hotunplug_complete");
2923 /* --------------------------------------------------------------------- */
2925 static struct attribute
*hotkey_attributes
[] __initdata
= {
2926 &dev_attr_hotkey_enable
.attr
,
2927 &dev_attr_hotkey_bios_enabled
.attr
,
2928 &dev_attr_hotkey_bios_mask
.attr
,
2929 &dev_attr_hotkey_wakeup_reason
.attr
,
2930 &dev_attr_hotkey_wakeup_hotunplug_complete
.attr
,
2931 &dev_attr_hotkey_mask
.attr
,
2932 &dev_attr_hotkey_all_mask
.attr
,
2933 &dev_attr_hotkey_recommended_mask
.attr
,
2934 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2935 &dev_attr_hotkey_source_mask
.attr
,
2936 &dev_attr_hotkey_poll_freq
.attr
,
2941 * Sync both the hw and sw blocking state of all switches
2943 static void tpacpi_send_radiosw_update(void)
2948 * We must sync all rfkill controllers *before* issuing any
2949 * rfkill input events, or we will race the rfkill core input
2952 * tpacpi_inputdev_send_mutex works as a synchronization point
2955 * We optimize to avoid numerous calls to hotkey_get_wlsw.
2958 wlsw
= hotkey_get_wlsw();
2960 /* Sync hw blocking state first if it is hw-blocked */
2961 if (wlsw
== TPACPI_RFK_RADIO_OFF
)
2962 tpacpi_rfk_update_hwblock_state(true);
2964 /* Sync sw blocking state */
2965 tpacpi_rfk_update_swstate_all();
2967 /* Sync hw blocking state last if it is hw-unblocked */
2968 if (wlsw
== TPACPI_RFK_RADIO_ON
)
2969 tpacpi_rfk_update_hwblock_state(false);
2971 /* Issue rfkill input event for WLSW switch */
2973 mutex_lock(&tpacpi_inputdev_send_mutex
);
2975 input_report_switch(tpacpi_inputdev
,
2976 SW_RFKILL_ALL
, (wlsw
> 0));
2977 input_sync(tpacpi_inputdev
);
2979 mutex_unlock(&tpacpi_inputdev_send_mutex
);
2983 * this can be unconditional, as we will poll state again
2984 * if userspace uses the notify to read data
2986 hotkey_radio_sw_notify_change();
2989 static void hotkey_exit(void)
2991 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2992 mutex_lock(&hotkey_mutex
);
2993 hotkey_poll_stop_sync();
2994 mutex_unlock(&hotkey_mutex
);
2997 if (hotkey_dev_attributes
)
2998 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
3000 dbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_HKEY
,
3001 "restoring original HKEY status and mask\n");
3002 /* yes, there is a bitwise or below, we want the
3003 * functions to be called even if one of them fail */
3004 if (((tp_features
.hotkey_mask
&&
3005 hotkey_mask_set(hotkey_orig_mask
)) |
3006 hotkey_status_set(false)) != 0)
3007 pr_err("failed to restore hot key mask "
3008 "to BIOS defaults\n");
3011 static void __init
hotkey_unmap(const unsigned int scancode
)
3013 if (hotkey_keycode_map
[scancode
] != KEY_RESERVED
) {
3014 clear_bit(hotkey_keycode_map
[scancode
],
3015 tpacpi_inputdev
->keybit
);
3016 hotkey_keycode_map
[scancode
] = KEY_RESERVED
;
3022 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3025 #define TPACPI_HK_Q_INIMASK 0x0001
3027 static const struct tpacpi_quirk tpacpi_hotkey_qtable
[] __initconst
= {
3028 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK
), /* 600E */
3029 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK
), /* 600E */
3030 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK
), /* 770, 770E, 770ED */
3031 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK
), /* A20m */
3032 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK
), /* A20p */
3033 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK
), /* A21e, A22e */
3034 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK
), /* A21e */
3035 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK
), /* A21m, A22m */
3036 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK
), /* A21p, A22p */
3037 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK
), /* A22e */
3038 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK
), /* A22m */
3039 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK
), /* A30/p (0) */
3040 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK
), /* R30 */
3041 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK
), /* R31 */
3042 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK
), /* T20 */
3043 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK
), /* T21 */
3044 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK
), /* T22 */
3045 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK
), /* X20, X21 */
3046 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK
), /* X22, X23, X24 */
3049 typedef u16 tpacpi_keymap_entry_t
;
3050 typedef tpacpi_keymap_entry_t tpacpi_keymap_t
[TPACPI_HOTKEY_MAP_LEN
];
3052 static int __init
hotkey_init(struct ibm_init_struct
*iibm
)
3054 /* Requirements for changing the default keymaps:
3056 * 1. Many of the keys are mapped to KEY_RESERVED for very
3057 * good reasons. Do not change them unless you have deep
3058 * knowledge on the IBM and Lenovo ThinkPad firmware for
3059 * the various ThinkPad models. The driver behaves
3060 * differently for KEY_RESERVED: such keys have their
3061 * hot key mask *unset* in mask_recommended, and also
3062 * in the initial hot key mask programmed into the
3063 * firmware at driver load time, which means the firm-
3064 * ware may react very differently if you change them to
3067 * 2. You must be subscribed to the linux-thinkpad and
3068 * ibm-acpi-devel mailing lists, and you should read the
3069 * list archives since 2007 if you want to change the
3070 * keymaps. This requirement exists so that you will
3071 * know the past history of problems with the thinkpad-
3072 * acpi driver keymaps, and also that you will be
3073 * listening to any bug reports;
3075 * 3. Do not send thinkpad-acpi specific patches directly to
3076 * for merging, *ever*. Send them to the linux-acpi
3077 * mailinglist for comments. Merging is to be done only
3078 * through acpi-test and the ACPI maintainer.
3080 * If the above is too much to ask, don't change the keymap.
3081 * Ask the thinkpad-acpi maintainer to do it, instead.
3085 TPACPI_KEYMAP_IBM_GENERIC
= 0,
3086 TPACPI_KEYMAP_LENOVO_GENERIC
,
3089 static const tpacpi_keymap_t tpacpi_keymaps
[] __initconst
= {
3090 /* Generic keymap for IBM ThinkPads */
3091 [TPACPI_KEYMAP_IBM_GENERIC
] = {
3092 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3093 KEY_FN_F1
, KEY_BATTERY
, KEY_COFFEE
, KEY_SLEEP
,
3094 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
3095 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
3097 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
3098 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
3099 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
3100 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
3102 /* brightness: firmware always reacts to them */
3103 KEY_RESERVED
, /* 0x0F: FN+HOME (brightness up) */
3104 KEY_RESERVED
, /* 0x10: FN+END (brightness down) */
3106 /* Thinklight: firmware always react to it */
3107 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
3109 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
3110 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
3112 /* Volume: firmware always react to it and reprograms
3113 * the built-in *extra* mixer. Never map it to control
3114 * another mixer by default. */
3115 KEY_RESERVED
, /* 0x14: VOLUME UP */
3116 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
3117 KEY_RESERVED
, /* 0x16: MUTE */
3119 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
3121 /* (assignments unknown, please report if found) */
3122 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3123 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3126 /* Generic keymap for Lenovo ThinkPads */
3127 [TPACPI_KEYMAP_LENOVO_GENERIC
] = {
3128 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3129 KEY_FN_F1
, KEY_COFFEE
, KEY_BATTERY
, KEY_SLEEP
,
3130 KEY_WLAN
, KEY_CAMERA
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
3131 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
3133 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
3134 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
3135 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
3136 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
3138 /* These should be enabled --only-- when ACPI video
3139 * is disabled (i.e. in "vendor" mode), and are handled
3140 * in a special way by the init code */
3141 KEY_BRIGHTNESSUP
, /* 0x0F: FN+HOME (brightness up) */
3142 KEY_BRIGHTNESSDOWN
, /* 0x10: FN+END (brightness down) */
3144 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
3146 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
3147 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
3149 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3150 * react to it and reprograms the built-in *extra* mixer.
3151 * Never map it to control another mixer by default.
3153 * T60?, T61, R60?, R61: firmware and EC tries to send
3154 * these over the regular keyboard, so these are no-ops,
3155 * but there are still weird bugs re. MUTE, so do not
3156 * change unless you get test reports from all Lenovo
3157 * models. May cause the BIOS to interfere with the
3160 KEY_RESERVED
, /* 0x14: VOLUME UP */
3161 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
3162 KEY_RESERVED
, /* 0x16: MUTE */
3164 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
3166 /* (assignments unknown, please report if found) */
3167 KEY_UNKNOWN
, KEY_UNKNOWN
,
3170 * The mic mute button only sends 0x1a. It does not
3171 * automatically mute the mic or change the mute light.
3173 KEY_MICMUTE
, /* 0x1a: Mic mute (since ?400 or so) */
3175 /* (assignments unknown, please report if found) */
3176 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3181 static const struct tpacpi_quirk tpacpi_keymap_qtable
[] __initconst
= {
3182 /* Generic maps (fallback) */
3184 .vendor
= PCI_VENDOR_ID_IBM
,
3185 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_ANY
,
3186 .quirks
= TPACPI_KEYMAP_IBM_GENERIC
,
3189 .vendor
= PCI_VENDOR_ID_LENOVO
,
3190 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_ANY
,
3191 .quirks
= TPACPI_KEYMAP_LENOVO_GENERIC
,
3195 #define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t)
3196 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t)
3201 bool radiosw_state
= false;
3202 bool tabletsw_state
= false;
3204 unsigned long quirks
;
3205 unsigned long keymap_id
;
3207 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3208 "initializing hotkey subdriver\n");
3210 BUG_ON(!tpacpi_inputdev
);
3211 BUG_ON(tpacpi_inputdev
->open
!= NULL
||
3212 tpacpi_inputdev
->close
!= NULL
);
3214 TPACPI_ACPIHANDLE_INIT(hkey
);
3215 mutex_init(&hotkey_mutex
);
3217 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3218 mutex_init(&hotkey_thread_data_mutex
);
3221 /* hotkey not supported on 570 */
3222 tp_features
.hotkey
= hkey_handle
!= NULL
;
3224 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3226 str_supported(tp_features
.hotkey
));
3228 if (!tp_features
.hotkey
)
3231 quirks
= tpacpi_check_quirks(tpacpi_hotkey_qtable
,
3232 ARRAY_SIZE(tpacpi_hotkey_qtable
));
3234 tpacpi_disable_brightness_delay();
3236 /* MUST have enough space for all attributes to be added to
3237 * hotkey_dev_attributes */
3238 hotkey_dev_attributes
= create_attr_set(
3239 ARRAY_SIZE(hotkey_attributes
) + 2,
3241 if (!hotkey_dev_attributes
)
3243 res
= add_many_to_attr_set(hotkey_dev_attributes
,
3245 ARRAY_SIZE(hotkey_attributes
));
3249 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
3250 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3251 for HKEY interface version 0x100 */
3252 if (acpi_evalf(hkey_handle
, &hkeyv
, "MHKV", "qd")) {
3253 if ((hkeyv
>> 8) != 1) {
3254 pr_err("unknown version of the HKEY interface: 0x%x\n",
3256 pr_err("please report this to %s\n", TPACPI_MAIL
);
3259 * MHKV 0x100 in A31, R40, R40e,
3260 * T4x, X31, and later
3262 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3263 "firmware HKEY interface version: 0x%x\n",
3266 /* Paranoia check AND init hotkey_all_mask */
3267 if (!acpi_evalf(hkey_handle
, &hotkey_all_mask
,
3269 pr_err("missing MHKA handler, "
3270 "please report this to %s\n",
3272 /* Fallback: pre-init for FN+F3,F4,F12 */
3273 hotkey_all_mask
= 0x080cU
;
3275 tp_features
.hotkey_mask
= 1;
3280 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3281 "hotkey masks are %s\n",
3282 str_supported(tp_features
.hotkey_mask
));
3284 /* Init hotkey_all_mask if not initialized yet */
3285 if (!tp_features
.hotkey_mask
&& !hotkey_all_mask
&&
3286 (quirks
& TPACPI_HK_Q_INIMASK
))
3287 hotkey_all_mask
= 0x080cU
; /* FN+F12, FN+F4, FN+F3 */
3289 /* Init hotkey_acpi_mask and hotkey_orig_mask */
3290 if (tp_features
.hotkey_mask
) {
3291 /* hotkey_source_mask *must* be zero for
3292 * the first hotkey_mask_get to return hotkey_orig_mask */
3293 res
= hotkey_mask_get();
3297 hotkey_orig_mask
= hotkey_acpi_mask
;
3299 hotkey_orig_mask
= hotkey_all_mask
;
3300 hotkey_acpi_mask
= hotkey_all_mask
;
3303 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3305 tp_features
.hotkey_wlsw
= 1;
3306 radiosw_state
= !!tpacpi_wlsw_emulstate
;
3307 pr_info("radio switch emulation enabled\n");
3310 /* Not all thinkpads have a hardware radio switch */
3311 if (acpi_evalf(hkey_handle
, &status
, "WLSW", "qd")) {
3312 tp_features
.hotkey_wlsw
= 1;
3313 radiosw_state
= !!status
;
3314 pr_info("radio switch found; radios are %s\n",
3315 enabled(status
, 0));
3317 if (tp_features
.hotkey_wlsw
)
3318 res
= add_to_attr_set(hotkey_dev_attributes
,
3319 &dev_attr_hotkey_radio_sw
.attr
);
3321 /* For X41t, X60t, X61t Tablets... */
3322 if (!res
&& acpi_evalf(hkey_handle
, &status
, "MHKG", "qd")) {
3323 tp_features
.hotkey_tablet
= 1;
3324 tabletsw_state
= !!(status
& TP_HOTKEY_TABLET_MASK
);
3325 pr_info("possible tablet mode switch found; "
3326 "ThinkPad in %s mode\n",
3327 (tabletsw_state
) ? "tablet" : "laptop");
3328 res
= add_to_attr_set(hotkey_dev_attributes
,
3329 &dev_attr_hotkey_tablet_mode
.attr
);
3333 res
= register_attr_set_with_sysfs(
3334 hotkey_dev_attributes
,
3335 &tpacpi_pdev
->dev
.kobj
);
3339 /* Set up key map */
3340 hotkey_keycode_map
= kmalloc(TPACPI_HOTKEY_MAP_SIZE
,
3342 if (!hotkey_keycode_map
) {
3343 pr_err("failed to allocate memory for key map\n");
3348 keymap_id
= tpacpi_check_quirks(tpacpi_keymap_qtable
,
3349 ARRAY_SIZE(tpacpi_keymap_qtable
));
3350 BUG_ON(keymap_id
>= ARRAY_SIZE(tpacpi_keymaps
));
3351 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3352 "using keymap number %lu\n", keymap_id
);
3354 memcpy(hotkey_keycode_map
, &tpacpi_keymaps
[keymap_id
],
3355 TPACPI_HOTKEY_MAP_SIZE
);
3357 input_set_capability(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
);
3358 tpacpi_inputdev
->keycodesize
= TPACPI_HOTKEY_MAP_TYPESIZE
;
3359 tpacpi_inputdev
->keycodemax
= TPACPI_HOTKEY_MAP_LEN
;
3360 tpacpi_inputdev
->keycode
= hotkey_keycode_map
;
3361 for (i
= 0; i
< TPACPI_HOTKEY_MAP_LEN
; i
++) {
3362 if (hotkey_keycode_map
[i
] != KEY_RESERVED
) {
3363 input_set_capability(tpacpi_inputdev
, EV_KEY
,
3364 hotkey_keycode_map
[i
]);
3366 if (i
< sizeof(hotkey_reserved_mask
)*8)
3367 hotkey_reserved_mask
|= 1 << i
;
3371 if (tp_features
.hotkey_wlsw
) {
3372 input_set_capability(tpacpi_inputdev
, EV_SW
, SW_RFKILL_ALL
);
3373 input_report_switch(tpacpi_inputdev
,
3374 SW_RFKILL_ALL
, radiosw_state
);
3376 if (tp_features
.hotkey_tablet
) {
3377 input_set_capability(tpacpi_inputdev
, EV_SW
, SW_TABLET_MODE
);
3378 input_report_switch(tpacpi_inputdev
,
3379 SW_TABLET_MODE
, tabletsw_state
);
3382 /* Do not issue duplicate brightness change events to
3383 * userspace. tpacpi_detect_brightness_capabilities() must have
3384 * been called before this point */
3385 if (acpi_video_backlight_support()) {
3386 pr_info("This ThinkPad has standard ACPI backlight "
3387 "brightness control, supported by the ACPI "
3389 pr_notice("Disabling thinkpad-acpi brightness events "
3392 /* Disable brightness up/down on Lenovo thinkpads when
3393 * ACPI is handling them, otherwise it is plain impossible
3394 * for userspace to do something even remotely sane */
3395 hotkey_reserved_mask
|=
3396 (1 << TP_ACPI_HOTKEYSCAN_FNHOME
)
3397 | (1 << TP_ACPI_HOTKEYSCAN_FNEND
);
3398 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME
);
3399 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND
);
3402 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3403 hotkey_source_mask
= TPACPI_HKEY_NVRAM_GOOD_MASK
3405 & ~hotkey_reserved_mask
;
3407 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3408 "hotkey source mask 0x%08x, polling freq %u\n",
3409 hotkey_source_mask
, hotkey_poll_freq
);
3412 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3413 "enabling firmware HKEY event interface...\n");
3414 res
= hotkey_status_set(true);
3419 res
= hotkey_mask_set(((hotkey_all_mask
& ~hotkey_reserved_mask
)
3420 | hotkey_driver_mask
)
3421 & ~hotkey_source_mask
);
3422 if (res
< 0 && res
!= -ENXIO
) {
3426 hotkey_user_mask
= (hotkey_acpi_mask
| hotkey_source_mask
)
3427 & ~hotkey_reserved_mask
;
3428 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3429 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3430 hotkey_user_mask
, hotkey_acpi_mask
, hotkey_source_mask
);
3432 tpacpi_inputdev
->open
= &hotkey_inputdev_open
;
3433 tpacpi_inputdev
->close
= &hotkey_inputdev_close
;
3435 hotkey_poll_setup_safe(true);
3440 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
3441 hotkey_dev_attributes
= NULL
;
3443 return (res
< 0)? res
: 1;
3446 static bool hotkey_notify_hotkey(const u32 hkey
,
3448 bool *ignore_acpi_ev
)
3450 /* 0x1000-0x1FFF: key presses */
3451 unsigned int scancode
= hkey
& 0xfff;
3452 *send_acpi_ev
= true;
3453 *ignore_acpi_ev
= false;
3455 /* HKEY event 0x1001 is scancode 0x00 */
3456 if (scancode
> 0 && scancode
<= TPACPI_HOTKEY_MAP_LEN
) {
3458 if (!(hotkey_source_mask
& (1 << scancode
))) {
3459 tpacpi_input_send_key_masked(scancode
);
3460 *send_acpi_ev
= false;
3462 *ignore_acpi_ev
= true;
3469 static bool hotkey_notify_wakeup(const u32 hkey
,
3471 bool *ignore_acpi_ev
)
3473 /* 0x2000-0x2FFF: Wakeup reason */
3474 *send_acpi_ev
= true;
3475 *ignore_acpi_ev
= false;
3478 case TP_HKEY_EV_WKUP_S3_UNDOCK
: /* suspend, undock */
3479 case TP_HKEY_EV_WKUP_S4_UNDOCK
: /* hibernation, undock */
3480 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_UNDOCK
;
3481 *ignore_acpi_ev
= true;
3484 case TP_HKEY_EV_WKUP_S3_BAYEJ
: /* suspend, bay eject */
3485 case TP_HKEY_EV_WKUP_S4_BAYEJ
: /* hibernation, bay eject */
3486 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_BAYEJ
;
3487 *ignore_acpi_ev
= true;
3490 case TP_HKEY_EV_WKUP_S3_BATLOW
: /* Battery on critical low level/S3 */
3491 case TP_HKEY_EV_WKUP_S4_BATLOW
: /* Battery on critical low level/S4 */
3492 pr_alert("EMERGENCY WAKEUP: battery almost empty\n");
3493 /* how to auto-heal: */
3494 /* 2313: woke up from S3, go to S4/S5 */
3495 /* 2413: woke up from S4, go to S5 */
3502 if (hotkey_wakeup_reason
!= TP_ACPI_WAKEUP_NONE
) {
3503 pr_info("woke up due to a hot-unplug request...\n");
3504 hotkey_wakeup_reason_notify_change();
3509 static bool hotkey_notify_dockevent(const u32 hkey
,
3511 bool *ignore_acpi_ev
)
3513 /* 0x4000-0x4FFF: dock-related events */
3514 *send_acpi_ev
= true;
3515 *ignore_acpi_ev
= false;
3518 case TP_HKEY_EV_UNDOCK_ACK
:
3519 /* ACPI undock operation completed after wakeup */
3520 hotkey_autosleep_ack
= 1;
3521 pr_info("undocked\n");
3522 hotkey_wakeup_hotunplug_complete_notify_change();
3525 case TP_HKEY_EV_HOTPLUG_DOCK
: /* docked to port replicator */
3526 pr_info("docked into hotplug port replicator\n");
3528 case TP_HKEY_EV_HOTPLUG_UNDOCK
: /* undocked from port replicator */
3529 pr_info("undocked from hotplug port replicator\n");
3537 static bool hotkey_notify_usrevent(const u32 hkey
,
3539 bool *ignore_acpi_ev
)
3541 /* 0x5000-0x5FFF: human interface helpers */
3542 *send_acpi_ev
= true;
3543 *ignore_acpi_ev
= false;
3546 case TP_HKEY_EV_PEN_INSERTED
: /* X61t: tablet pen inserted into bay */
3547 case TP_HKEY_EV_PEN_REMOVED
: /* X61t: tablet pen removed from bay */
3550 case TP_HKEY_EV_TABLET_TABLET
: /* X41t-X61t: tablet mode */
3551 case TP_HKEY_EV_TABLET_NOTEBOOK
: /* X41t-X61t: normal mode */
3552 tpacpi_input_send_tabletsw();
3553 hotkey_tablet_mode_notify_change();
3554 *send_acpi_ev
= false;
3557 case TP_HKEY_EV_LID_CLOSE
: /* Lid closed */
3558 case TP_HKEY_EV_LID_OPEN
: /* Lid opened */
3559 case TP_HKEY_EV_BRGHT_CHANGED
: /* brightness changed */
3560 /* do not propagate these events */
3561 *ignore_acpi_ev
= true;
3569 static void thermal_dump_all_sensors(void);
3571 static bool hotkey_notify_6xxx(const u32 hkey
,
3573 bool *ignore_acpi_ev
)
3577 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */
3578 *send_acpi_ev
= true;
3579 *ignore_acpi_ev
= false;
3582 case TP_HKEY_EV_THM_TABLE_CHANGED
:
3583 pr_info("EC reports that Thermal Table has changed\n");
3584 /* recommended action: do nothing, we don't have
3585 * Lenovo ATM information */
3587 case TP_HKEY_EV_ALARM_BAT_HOT
:
3588 pr_crit("THERMAL ALARM: battery is too hot!\n");
3589 /* recommended action: warn user through gui */
3591 case TP_HKEY_EV_ALARM_BAT_XHOT
:
3592 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");
3593 /* recommended action: immediate sleep/hibernate */
3595 case TP_HKEY_EV_ALARM_SENSOR_HOT
:
3596 pr_crit("THERMAL ALARM: "
3597 "a sensor reports something is too hot!\n");
3598 /* recommended action: warn user through gui, that */
3599 /* some internal component is too hot */
3601 case TP_HKEY_EV_ALARM_SENSOR_XHOT
:
3602 pr_alert("THERMAL EMERGENCY: "
3603 "a sensor reports something is extremely hot!\n");
3604 /* recommended action: immediate sleep/hibernate */
3606 case TP_HKEY_EV_AC_CHANGED
:
3607 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520:
3608 * AC status changed; can be triggered by plugging or
3609 * unplugging AC adapter, docking or undocking. */
3613 case TP_HKEY_EV_KEY_NUMLOCK
:
3614 case TP_HKEY_EV_KEY_FN
:
3615 /* key press events, we just ignore them as long as the EC
3616 * is still reporting them in the normal keyboard stream */
3617 *send_acpi_ev
= false;
3618 *ignore_acpi_ev
= true;
3622 pr_warn("unknown possible thermal alarm or keyboard event received\n");
3626 thermal_dump_all_sensors();
3631 static void hotkey_notify(struct ibm_struct
*ibm
, u32 event
)
3635 bool ignore_acpi_ev
;
3638 if (event
!= 0x80) {
3639 pr_err("unknown HKEY notification event %d\n", event
);
3640 /* forward it to userspace, maybe it knows how to handle it */
3641 acpi_bus_generate_netlink_event(
3642 ibm
->acpi
->device
->pnp
.device_class
,
3643 dev_name(&ibm
->acpi
->device
->dev
),
3649 if (!acpi_evalf(hkey_handle
, &hkey
, "MHKP", "d")) {
3650 pr_err("failed to retrieve HKEY event\n");
3659 send_acpi_ev
= true;
3660 ignore_acpi_ev
= false;
3662 switch (hkey
>> 12) {
3664 /* 0x1000-0x1FFF: key presses */
3665 known_ev
= hotkey_notify_hotkey(hkey
, &send_acpi_ev
,
3669 /* 0x2000-0x2FFF: Wakeup reason */
3670 known_ev
= hotkey_notify_wakeup(hkey
, &send_acpi_ev
,
3674 /* 0x3000-0x3FFF: bay-related wakeups */
3676 case TP_HKEY_EV_BAYEJ_ACK
:
3677 hotkey_autosleep_ack
= 1;
3678 pr_info("bay ejected\n");
3679 hotkey_wakeup_hotunplug_complete_notify_change();
3682 case TP_HKEY_EV_OPTDRV_EJ
:
3683 /* FIXME: kick libata if SATA link offline */
3691 /* 0x4000-0x4FFF: dock-related events */
3692 known_ev
= hotkey_notify_dockevent(hkey
, &send_acpi_ev
,
3696 /* 0x5000-0x5FFF: human interface helpers */
3697 known_ev
= hotkey_notify_usrevent(hkey
, &send_acpi_ev
,
3701 /* 0x6000-0x6FFF: thermal alarms/notices and
3702 * keyboard events */
3703 known_ev
= hotkey_notify_6xxx(hkey
, &send_acpi_ev
,
3707 /* 0x7000-0x7FFF: misc */
3708 if (tp_features
.hotkey_wlsw
&&
3709 hkey
== TP_HKEY_EV_RFKILL_CHANGED
) {
3710 tpacpi_send_radiosw_update();
3715 /* fallthrough to default */
3720 pr_notice("unhandled HKEY event 0x%04x\n", hkey
);
3721 pr_notice("please report the conditions when this "
3722 "event happened to %s\n", TPACPI_MAIL
);
3725 /* netlink events */
3726 if (!ignore_acpi_ev
&& send_acpi_ev
) {
3727 acpi_bus_generate_netlink_event(
3728 ibm
->acpi
->device
->pnp
.device_class
,
3729 dev_name(&ibm
->acpi
->device
->dev
),
3735 static void hotkey_suspend(void)
3737 /* Do these on suspend, we get the events on early resume! */
3738 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_NONE
;
3739 hotkey_autosleep_ack
= 0;
3742 static void hotkey_resume(void)
3744 tpacpi_disable_brightness_delay();
3746 if (hotkey_status_set(true) < 0 ||
3747 hotkey_mask_set(hotkey_acpi_mask
) < 0)
3748 pr_err("error while attempting to reset the event "
3749 "firmware interface\n");
3751 tpacpi_send_radiosw_update();
3752 hotkey_tablet_mode_notify_change();
3753 hotkey_wakeup_reason_notify_change();
3754 hotkey_wakeup_hotunplug_complete_notify_change();
3755 hotkey_poll_setup_safe(false);
3758 /* procfs -------------------------------------------------------------- */
3759 static int hotkey_read(struct seq_file
*m
)
3763 if (!tp_features
.hotkey
) {
3764 seq_printf(m
, "status:\t\tnot supported\n");
3768 if (mutex_lock_killable(&hotkey_mutex
))
3769 return -ERESTARTSYS
;
3770 res
= hotkey_status_get(&status
);
3772 res
= hotkey_mask_get();
3773 mutex_unlock(&hotkey_mutex
);
3777 seq_printf(m
, "status:\t\t%s\n", enabled(status
, 0));
3778 if (hotkey_all_mask
) {
3779 seq_printf(m
, "mask:\t\t0x%08x\n", hotkey_user_mask
);
3780 seq_printf(m
, "commands:\tenable, disable, reset, <mask>\n");
3782 seq_printf(m
, "mask:\t\tnot supported\n");
3783 seq_printf(m
, "commands:\tenable, disable, reset\n");
3789 static void hotkey_enabledisable_warn(bool enable
)
3791 tpacpi_log_usertask("procfs hotkey enable/disable");
3792 if (!WARN((tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
|| !enable
),
3793 pr_fmt("hotkey enable/disable functionality has been "
3794 "removed from the driver. "
3795 "Hotkeys are always enabled.\n")))
3796 pr_err("Please remove the hotkey=enable module "
3797 "parameter, it is deprecated. "
3798 "Hotkeys are always enabled.\n");
3801 static int hotkey_write(char *buf
)
3807 if (!tp_features
.hotkey
)
3810 if (mutex_lock_killable(&hotkey_mutex
))
3811 return -ERESTARTSYS
;
3813 mask
= hotkey_user_mask
;
3816 while ((cmd
= next_cmd(&buf
))) {
3817 if (strlencmp(cmd
, "enable") == 0) {
3818 hotkey_enabledisable_warn(1);
3819 } else if (strlencmp(cmd
, "disable") == 0) {
3820 hotkey_enabledisable_warn(0);
3822 } else if (strlencmp(cmd
, "reset") == 0) {
3823 mask
= (hotkey_all_mask
| hotkey_source_mask
)
3824 & ~hotkey_reserved_mask
;
3825 } else if (sscanf(cmd
, "0x%x", &mask
) == 1) {
3827 } else if (sscanf(cmd
, "%x", &mask
) == 1) {
3836 tpacpi_disclose_usertask("procfs hotkey",
3837 "set mask to 0x%08x\n", mask
);
3838 res
= hotkey_user_mask_set(mask
);
3842 mutex_unlock(&hotkey_mutex
);
3846 static const struct acpi_device_id ibm_htk_device_ids
[] = {
3847 {TPACPI_ACPI_IBM_HKEY_HID
, 0},
3848 {TPACPI_ACPI_LENOVO_HKEY_HID
, 0},
3852 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
= {
3853 .hid
= ibm_htk_device_ids
,
3854 .notify
= hotkey_notify
,
3855 .handle
= &hkey_handle
,
3856 .type
= ACPI_DEVICE_NOTIFY
,
3859 static struct ibm_struct hotkey_driver_data
= {
3861 .read
= hotkey_read
,
3862 .write
= hotkey_write
,
3863 .exit
= hotkey_exit
,
3864 .resume
= hotkey_resume
,
3865 .suspend
= hotkey_suspend
,
3866 .acpi
= &ibm_hotkey_acpidriver
,
3869 /*************************************************************************
3870 * Bluetooth subdriver
3874 /* ACPI GBDC/SBDC bits */
3875 TP_ACPI_BLUETOOTH_HWPRESENT
= 0x01, /* Bluetooth hw available */
3876 TP_ACPI_BLUETOOTH_RADIOSSW
= 0x02, /* Bluetooth radio enabled */
3877 TP_ACPI_BLUETOOTH_RESUMECTRL
= 0x04, /* Bluetooth state at resume:
3878 0 = disable, 1 = enable */
3882 /* ACPI \BLTH commands */
3883 TP_ACPI_BLTH_GET_ULTRAPORT_ID
= 0x00, /* Get Ultraport BT ID */
3884 TP_ACPI_BLTH_GET_PWR_ON_RESUME
= 0x01, /* Get power-on-resume state */
3885 TP_ACPI_BLTH_PWR_ON_ON_RESUME
= 0x02, /* Resume powered on */
3886 TP_ACPI_BLTH_PWR_OFF_ON_RESUME
= 0x03, /* Resume powered off */
3887 TP_ACPI_BLTH_SAVE_STATE
= 0x05, /* Save state for S4/S5 */
3890 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3892 static int bluetooth_get_status(void)
3896 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3897 if (dbg_bluetoothemul
)
3898 return (tpacpi_bluetooth_emulstate
) ?
3899 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
3902 if (!acpi_evalf(hkey_handle
, &status
, "GBDC", "d"))
3905 return ((status
& TP_ACPI_BLUETOOTH_RADIOSSW
) != 0) ?
3906 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
3909 static int bluetooth_set_status(enum tpacpi_rfkill_state state
)
3913 vdbg_printk(TPACPI_DBG_RFKILL
,
3914 "will attempt to %s bluetooth\n",
3915 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
3917 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3918 if (dbg_bluetoothemul
) {
3919 tpacpi_bluetooth_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
3924 if (state
== TPACPI_RFK_RADIO_ON
)
3925 status
= TP_ACPI_BLUETOOTH_RADIOSSW
3926 | TP_ACPI_BLUETOOTH_RESUMECTRL
;
3930 if (!acpi_evalf(hkey_handle
, NULL
, "SBDC", "vd", status
))
3936 /* sysfs bluetooth enable ---------------------------------------------- */
3937 static ssize_t
bluetooth_enable_show(struct device
*dev
,
3938 struct device_attribute
*attr
,
3941 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID
,
3945 static ssize_t
bluetooth_enable_store(struct device
*dev
,
3946 struct device_attribute
*attr
,
3947 const char *buf
, size_t count
)
3949 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID
,
3953 static struct device_attribute dev_attr_bluetooth_enable
=
3954 __ATTR(bluetooth_enable
, S_IWUSR
| S_IRUGO
,
3955 bluetooth_enable_show
, bluetooth_enable_store
);
3957 /* --------------------------------------------------------------------- */
3959 static struct attribute
*bluetooth_attributes
[] = {
3960 &dev_attr_bluetooth_enable
.attr
,
3964 static const struct attribute_group bluetooth_attr_group
= {
3965 .attrs
= bluetooth_attributes
,
3968 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops
= {
3969 .get_status
= bluetooth_get_status
,
3970 .set_status
= bluetooth_set_status
,
3973 static void bluetooth_shutdown(void)
3975 /* Order firmware to save current state to NVRAM */
3976 if (!acpi_evalf(NULL
, NULL
, "\\BLTH", "vd",
3977 TP_ACPI_BLTH_SAVE_STATE
))
3978 pr_notice("failed to save bluetooth state to NVRAM\n");
3980 vdbg_printk(TPACPI_DBG_RFKILL
,
3981 "bluetooth state saved to NVRAM\n");
3984 static void bluetooth_exit(void)
3986 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
3987 &bluetooth_attr_group
);
3989 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
);
3991 bluetooth_shutdown();
3994 static int __init
bluetooth_init(struct ibm_init_struct
*iibm
)
3999 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4000 "initializing bluetooth subdriver\n");
4002 TPACPI_ACPIHANDLE_INIT(hkey
);
4004 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4005 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
4006 tp_features
.bluetooth
= hkey_handle
&&
4007 acpi_evalf(hkey_handle
, &status
, "GBDC", "qd");
4009 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4010 "bluetooth is %s, status 0x%02x\n",
4011 str_supported(tp_features
.bluetooth
),
4014 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4015 if (dbg_bluetoothemul
) {
4016 tp_features
.bluetooth
= 1;
4017 pr_info("bluetooth switch emulation enabled\n");
4020 if (tp_features
.bluetooth
&&
4021 !(status
& TP_ACPI_BLUETOOTH_HWPRESENT
)) {
4022 /* no bluetooth hardware present in system */
4023 tp_features
.bluetooth
= 0;
4024 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4025 "bluetooth hardware not installed\n");
4028 if (!tp_features
.bluetooth
)
4031 res
= tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
,
4032 &bluetooth_tprfk_ops
,
4033 RFKILL_TYPE_BLUETOOTH
,
4034 TPACPI_RFK_BLUETOOTH_SW_NAME
,
4039 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
4040 &bluetooth_attr_group
);
4042 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
);
4049 /* procfs -------------------------------------------------------------- */
4050 static int bluetooth_read(struct seq_file
*m
)
4052 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID
, m
);
4055 static int bluetooth_write(char *buf
)
4057 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID
, buf
);
4060 static struct ibm_struct bluetooth_driver_data
= {
4061 .name
= "bluetooth",
4062 .read
= bluetooth_read
,
4063 .write
= bluetooth_write
,
4064 .exit
= bluetooth_exit
,
4065 .shutdown
= bluetooth_shutdown
,
4068 /*************************************************************************
4073 /* ACPI GWAN/SWAN bits */
4074 TP_ACPI_WANCARD_HWPRESENT
= 0x01, /* Wan hw available */
4075 TP_ACPI_WANCARD_RADIOSSW
= 0x02, /* Wan radio enabled */
4076 TP_ACPI_WANCARD_RESUMECTRL
= 0x04, /* Wan state at resume:
4077 0 = disable, 1 = enable */
4080 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4082 static int wan_get_status(void)
4086 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4088 return (tpacpi_wwan_emulstate
) ?
4089 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4092 if (!acpi_evalf(hkey_handle
, &status
, "GWAN", "d"))
4095 return ((status
& TP_ACPI_WANCARD_RADIOSSW
) != 0) ?
4096 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4099 static int wan_set_status(enum tpacpi_rfkill_state state
)
4103 vdbg_printk(TPACPI_DBG_RFKILL
,
4104 "will attempt to %s wwan\n",
4105 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
4107 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4109 tpacpi_wwan_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
4114 if (state
== TPACPI_RFK_RADIO_ON
)
4115 status
= TP_ACPI_WANCARD_RADIOSSW
4116 | TP_ACPI_WANCARD_RESUMECTRL
;
4120 if (!acpi_evalf(hkey_handle
, NULL
, "SWAN", "vd", status
))
4126 /* sysfs wan enable ---------------------------------------------------- */
4127 static ssize_t
wan_enable_show(struct device
*dev
,
4128 struct device_attribute
*attr
,
4131 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID
,
4135 static ssize_t
wan_enable_store(struct device
*dev
,
4136 struct device_attribute
*attr
,
4137 const char *buf
, size_t count
)
4139 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID
,
4143 static struct device_attribute dev_attr_wan_enable
=
4144 __ATTR(wwan_enable
, S_IWUSR
| S_IRUGO
,
4145 wan_enable_show
, wan_enable_store
);
4147 /* --------------------------------------------------------------------- */
4149 static struct attribute
*wan_attributes
[] = {
4150 &dev_attr_wan_enable
.attr
,
4154 static const struct attribute_group wan_attr_group
= {
4155 .attrs
= wan_attributes
,
4158 static const struct tpacpi_rfk_ops wan_tprfk_ops
= {
4159 .get_status
= wan_get_status
,
4160 .set_status
= wan_set_status
,
4163 static void wan_shutdown(void)
4165 /* Order firmware to save current state to NVRAM */
4166 if (!acpi_evalf(NULL
, NULL
, "\\WGSV", "vd",
4167 TP_ACPI_WGSV_SAVE_STATE
))
4168 pr_notice("failed to save WWAN state to NVRAM\n");
4170 vdbg_printk(TPACPI_DBG_RFKILL
,
4171 "WWAN state saved to NVRAM\n");
4174 static void wan_exit(void)
4176 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
4179 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID
);
4184 static int __init
wan_init(struct ibm_init_struct
*iibm
)
4189 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4190 "initializing wan subdriver\n");
4192 TPACPI_ACPIHANDLE_INIT(hkey
);
4194 tp_features
.wan
= hkey_handle
&&
4195 acpi_evalf(hkey_handle
, &status
, "GWAN", "qd");
4197 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4198 "wan is %s, status 0x%02x\n",
4199 str_supported(tp_features
.wan
),
4202 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4204 tp_features
.wan
= 1;
4205 pr_info("wwan switch emulation enabled\n");
4208 if (tp_features
.wan
&&
4209 !(status
& TP_ACPI_WANCARD_HWPRESENT
)) {
4210 /* no wan hardware present in system */
4211 tp_features
.wan
= 0;
4212 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4213 "wan hardware not installed\n");
4216 if (!tp_features
.wan
)
4219 res
= tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID
,
4222 TPACPI_RFK_WWAN_SW_NAME
,
4227 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
4231 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID
);
4238 /* procfs -------------------------------------------------------------- */
4239 static int wan_read(struct seq_file
*m
)
4241 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID
, m
);
4244 static int wan_write(char *buf
)
4246 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID
, buf
);
4249 static struct ibm_struct wan_driver_data
= {
4254 .shutdown
= wan_shutdown
,
4257 /*************************************************************************
4262 /* ACPI GUWB/SUWB bits */
4263 TP_ACPI_UWB_HWPRESENT
= 0x01, /* UWB hw available */
4264 TP_ACPI_UWB_RADIOSSW
= 0x02, /* UWB radio enabled */
4267 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4269 static int uwb_get_status(void)
4273 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4275 return (tpacpi_uwb_emulstate
) ?
4276 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4279 if (!acpi_evalf(hkey_handle
, &status
, "GUWB", "d"))
4282 return ((status
& TP_ACPI_UWB_RADIOSSW
) != 0) ?
4283 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4286 static int uwb_set_status(enum tpacpi_rfkill_state state
)
4290 vdbg_printk(TPACPI_DBG_RFKILL
,
4291 "will attempt to %s UWB\n",
4292 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
4294 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4296 tpacpi_uwb_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
4301 if (state
== TPACPI_RFK_RADIO_ON
)
4302 status
= TP_ACPI_UWB_RADIOSSW
;
4306 if (!acpi_evalf(hkey_handle
, NULL
, "SUWB", "vd", status
))
4312 /* --------------------------------------------------------------------- */
4314 static const struct tpacpi_rfk_ops uwb_tprfk_ops
= {
4315 .get_status
= uwb_get_status
,
4316 .set_status
= uwb_set_status
,
4319 static void uwb_exit(void)
4321 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID
);
4324 static int __init
uwb_init(struct ibm_init_struct
*iibm
)
4329 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4330 "initializing uwb subdriver\n");
4332 TPACPI_ACPIHANDLE_INIT(hkey
);
4334 tp_features
.uwb
= hkey_handle
&&
4335 acpi_evalf(hkey_handle
, &status
, "GUWB", "qd");
4337 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4338 "uwb is %s, status 0x%02x\n",
4339 str_supported(tp_features
.uwb
),
4342 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4344 tp_features
.uwb
= 1;
4345 pr_info("uwb switch emulation enabled\n");
4348 if (tp_features
.uwb
&&
4349 !(status
& TP_ACPI_UWB_HWPRESENT
)) {
4350 /* no uwb hardware present in system */
4351 tp_features
.uwb
= 0;
4352 dbg_printk(TPACPI_DBG_INIT
,
4353 "uwb hardware not installed\n");
4356 if (!tp_features
.uwb
)
4359 res
= tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID
,
4362 TPACPI_RFK_UWB_SW_NAME
,
4367 static struct ibm_struct uwb_driver_data
= {
4370 .flags
.experimental
= 1,
4373 /*************************************************************************
4377 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
4379 enum video_access_mode
{
4380 TPACPI_VIDEO_NONE
= 0,
4381 TPACPI_VIDEO_570
, /* 570 */
4382 TPACPI_VIDEO_770
, /* 600e/x, 770e, 770x */
4383 TPACPI_VIDEO_NEW
, /* all others */
4386 enum { /* video status flags, based on VIDEO_570 */
4387 TP_ACPI_VIDEO_S_LCD
= 0x01, /* LCD output enabled */
4388 TP_ACPI_VIDEO_S_CRT
= 0x02, /* CRT output enabled */
4389 TP_ACPI_VIDEO_S_DVI
= 0x08, /* DVI output enabled */
4392 enum { /* TPACPI_VIDEO_570 constants */
4393 TP_ACPI_VIDEO_570_PHSCMD
= 0x87, /* unknown magic constant :( */
4394 TP_ACPI_VIDEO_570_PHSMASK
= 0x03, /* PHS bits that map to
4395 * video_status_flags */
4396 TP_ACPI_VIDEO_570_PHS2CMD
= 0x8b, /* unknown magic constant :( */
4397 TP_ACPI_VIDEO_570_PHS2SET
= 0x80, /* unknown magic constant :( */
4400 static enum video_access_mode video_supported
;
4401 static int video_orig_autosw
;
4403 static int video_autosw_get(void);
4404 static int video_autosw_set(int enable
);
4406 TPACPI_HANDLE(vid
, root
,
4407 "\\_SB.PCI.AGP.VGA", /* 570 */
4408 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
4409 "\\_SB.PCI0.VID0", /* 770e */
4410 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
4411 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
4412 "\\_SB.PCI0.AGP.VID", /* all others */
4415 TPACPI_HANDLE(vid2
, root
, "\\_SB.PCI0.AGPB.VID"); /* G41 */
4417 static int __init
video_init(struct ibm_init_struct
*iibm
)
4421 vdbg_printk(TPACPI_DBG_INIT
, "initializing video subdriver\n");
4423 TPACPI_ACPIHANDLE_INIT(vid
);
4424 if (tpacpi_is_ibm())
4425 TPACPI_ACPIHANDLE_INIT(vid2
);
4427 if (vid2_handle
&& acpi_evalf(NULL
, &ivga
, "\\IVGA", "d") && ivga
)
4428 /* G41, assume IVGA doesn't change */
4429 vid_handle
= vid2_handle
;
4432 /* video switching not supported on R30, R31 */
4433 video_supported
= TPACPI_VIDEO_NONE
;
4434 else if (tpacpi_is_ibm() &&
4435 acpi_evalf(vid_handle
, &video_orig_autosw
, "SWIT", "qd"))
4437 video_supported
= TPACPI_VIDEO_570
;
4438 else if (tpacpi_is_ibm() &&
4439 acpi_evalf(vid_handle
, &video_orig_autosw
, "^VADL", "qd"))
4440 /* 600e/x, 770e, 770x */
4441 video_supported
= TPACPI_VIDEO_770
;
4444 video_supported
= TPACPI_VIDEO_NEW
;
4446 vdbg_printk(TPACPI_DBG_INIT
, "video is %s, mode %d\n",
4447 str_supported(video_supported
!= TPACPI_VIDEO_NONE
),
4450 return (video_supported
!= TPACPI_VIDEO_NONE
)? 0 : 1;
4453 static void video_exit(void)
4455 dbg_printk(TPACPI_DBG_EXIT
,
4456 "restoring original video autoswitch mode\n");
4457 if (video_autosw_set(video_orig_autosw
))
4458 pr_err("error while trying to restore original "
4459 "video autoswitch mode\n");
4462 static int video_outputsw_get(void)
4467 switch (video_supported
) {
4468 case TPACPI_VIDEO_570
:
4469 if (!acpi_evalf(NULL
, &i
, "\\_SB.PHS", "dd",
4470 TP_ACPI_VIDEO_570_PHSCMD
))
4472 status
= i
& TP_ACPI_VIDEO_570_PHSMASK
;
4474 case TPACPI_VIDEO_770
:
4475 if (!acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
4478 status
|= TP_ACPI_VIDEO_S_LCD
;
4479 if (!acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
4482 status
|= TP_ACPI_VIDEO_S_CRT
;
4484 case TPACPI_VIDEO_NEW
:
4485 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 1) ||
4486 !acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
4489 status
|= TP_ACPI_VIDEO_S_CRT
;
4491 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0) ||
4492 !acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
4495 status
|= TP_ACPI_VIDEO_S_LCD
;
4496 if (!acpi_evalf(NULL
, &i
, "\\VCDD", "d"))
4499 status
|= TP_ACPI_VIDEO_S_DVI
;
4508 static int video_outputsw_set(int status
)
4513 switch (video_supported
) {
4514 case TPACPI_VIDEO_570
:
4515 res
= acpi_evalf(NULL
, NULL
,
4516 "\\_SB.PHS2", "vdd",
4517 TP_ACPI_VIDEO_570_PHS2CMD
,
4518 status
| TP_ACPI_VIDEO_570_PHS2SET
);
4520 case TPACPI_VIDEO_770
:
4521 autosw
= video_autosw_get();
4525 res
= video_autosw_set(1);
4528 res
= acpi_evalf(vid_handle
, NULL
,
4529 "ASWT", "vdd", status
* 0x100, 0);
4530 if (!autosw
&& video_autosw_set(autosw
)) {
4531 pr_err("video auto-switch left enabled due to error\n");
4535 case TPACPI_VIDEO_NEW
:
4536 res
= acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0x80) &&
4537 acpi_evalf(NULL
, NULL
, "\\VSDS", "vdd", status
, 1);
4543 return (res
)? 0 : -EIO
;
4546 static int video_autosw_get(void)
4550 switch (video_supported
) {
4551 case TPACPI_VIDEO_570
:
4552 if (!acpi_evalf(vid_handle
, &autosw
, "SWIT", "d"))
4555 case TPACPI_VIDEO_770
:
4556 case TPACPI_VIDEO_NEW
:
4557 if (!acpi_evalf(vid_handle
, &autosw
, "^VDEE", "d"))
4567 static int video_autosw_set(int enable
)
4569 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", (enable
)? 1 : 0))
4574 static int video_outputsw_cycle(void)
4576 int autosw
= video_autosw_get();
4582 switch (video_supported
) {
4583 case TPACPI_VIDEO_570
:
4584 res
= video_autosw_set(1);
4587 res
= acpi_evalf(ec_handle
, NULL
, "_Q16", "v");
4589 case TPACPI_VIDEO_770
:
4590 case TPACPI_VIDEO_NEW
:
4591 res
= video_autosw_set(1);
4594 res
= acpi_evalf(vid_handle
, NULL
, "VSWT", "v");
4599 if (!autosw
&& video_autosw_set(autosw
)) {
4600 pr_err("video auto-switch left enabled due to error\n");
4604 return (res
)? 0 : -EIO
;
4607 static int video_expand_toggle(void)
4609 switch (video_supported
) {
4610 case TPACPI_VIDEO_570
:
4611 return acpi_evalf(ec_handle
, NULL
, "_Q17", "v")?
4613 case TPACPI_VIDEO_770
:
4614 return acpi_evalf(vid_handle
, NULL
, "VEXP", "v")?
4616 case TPACPI_VIDEO_NEW
:
4617 return acpi_evalf(NULL
, NULL
, "\\VEXP", "v")?
4625 static int video_read(struct seq_file
*m
)
4629 if (video_supported
== TPACPI_VIDEO_NONE
) {
4630 seq_printf(m
, "status:\t\tnot supported\n");
4634 /* Even reads can crash X.org, so... */
4635 if (!capable(CAP_SYS_ADMIN
))
4638 status
= video_outputsw_get();
4642 autosw
= video_autosw_get();
4646 seq_printf(m
, "status:\t\tsupported\n");
4647 seq_printf(m
, "lcd:\t\t%s\n", enabled(status
, 0));
4648 seq_printf(m
, "crt:\t\t%s\n", enabled(status
, 1));
4649 if (video_supported
== TPACPI_VIDEO_NEW
)
4650 seq_printf(m
, "dvi:\t\t%s\n", enabled(status
, 3));
4651 seq_printf(m
, "auto:\t\t%s\n", enabled(autosw
, 0));
4652 seq_printf(m
, "commands:\tlcd_enable, lcd_disable\n");
4653 seq_printf(m
, "commands:\tcrt_enable, crt_disable\n");
4654 if (video_supported
== TPACPI_VIDEO_NEW
)
4655 seq_printf(m
, "commands:\tdvi_enable, dvi_disable\n");
4656 seq_printf(m
, "commands:\tauto_enable, auto_disable\n");
4657 seq_printf(m
, "commands:\tvideo_switch, expand_toggle\n");
4662 static int video_write(char *buf
)
4665 int enable
, disable
, status
;
4668 if (video_supported
== TPACPI_VIDEO_NONE
)
4671 /* Even reads can crash X.org, let alone writes... */
4672 if (!capable(CAP_SYS_ADMIN
))
4678 while ((cmd
= next_cmd(&buf
))) {
4679 if (strlencmp(cmd
, "lcd_enable") == 0) {
4680 enable
|= TP_ACPI_VIDEO_S_LCD
;
4681 } else if (strlencmp(cmd
, "lcd_disable") == 0) {
4682 disable
|= TP_ACPI_VIDEO_S_LCD
;
4683 } else if (strlencmp(cmd
, "crt_enable") == 0) {
4684 enable
|= TP_ACPI_VIDEO_S_CRT
;
4685 } else if (strlencmp(cmd
, "crt_disable") == 0) {
4686 disable
|= TP_ACPI_VIDEO_S_CRT
;
4687 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
4688 strlencmp(cmd
, "dvi_enable") == 0) {
4689 enable
|= TP_ACPI_VIDEO_S_DVI
;
4690 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
4691 strlencmp(cmd
, "dvi_disable") == 0) {
4692 disable
|= TP_ACPI_VIDEO_S_DVI
;
4693 } else if (strlencmp(cmd
, "auto_enable") == 0) {
4694 res
= video_autosw_set(1);
4697 } else if (strlencmp(cmd
, "auto_disable") == 0) {
4698 res
= video_autosw_set(0);
4701 } else if (strlencmp(cmd
, "video_switch") == 0) {
4702 res
= video_outputsw_cycle();
4705 } else if (strlencmp(cmd
, "expand_toggle") == 0) {
4706 res
= video_expand_toggle();
4713 if (enable
|| disable
) {
4714 status
= video_outputsw_get();
4717 res
= video_outputsw_set((status
& ~disable
) | enable
);
4725 static struct ibm_struct video_driver_data
= {
4728 .write
= video_write
,
4732 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4734 /*************************************************************************
4735 * Light (thinklight) subdriver
4738 TPACPI_HANDLE(lght
, root
, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4739 TPACPI_HANDLE(ledb
, ec
, "LEDB"); /* G4x */
4741 static int light_get_status(void)
4745 if (tp_features
.light_status
) {
4746 if (!acpi_evalf(ec_handle
, &status
, "KBLT", "d"))
4754 static int light_set_status(int status
)
4758 if (tp_features
.light
) {
4760 rc
= acpi_evalf(cmos_handle
, NULL
, NULL
, "vd",
4762 TP_CMOS_THINKLIGHT_ON
:
4763 TP_CMOS_THINKLIGHT_OFF
);
4765 rc
= acpi_evalf(lght_handle
, NULL
, NULL
, "vd",
4768 return (rc
)? 0 : -EIO
;
4774 static void light_set_status_worker(struct work_struct
*work
)
4776 struct tpacpi_led_classdev
*data
=
4777 container_of(work
, struct tpacpi_led_classdev
, work
);
4779 if (likely(tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
))
4780 light_set_status((data
->new_state
!= TPACPI_LED_OFF
));
4783 static void light_sysfs_set(struct led_classdev
*led_cdev
,
4784 enum led_brightness brightness
)
4786 struct tpacpi_led_classdev
*data
=
4787 container_of(led_cdev
,
4788 struct tpacpi_led_classdev
,
4790 data
->new_state
= (brightness
!= LED_OFF
) ?
4791 TPACPI_LED_ON
: TPACPI_LED_OFF
;
4792 queue_work(tpacpi_wq
, &data
->work
);
4795 static enum led_brightness
light_sysfs_get(struct led_classdev
*led_cdev
)
4797 return (light_get_status() == 1)? LED_FULL
: LED_OFF
;
4800 static struct tpacpi_led_classdev tpacpi_led_thinklight
= {
4802 .name
= "tpacpi::thinklight",
4803 .brightness_set
= &light_sysfs_set
,
4804 .brightness_get
= &light_sysfs_get
,
4808 static int __init
light_init(struct ibm_init_struct
*iibm
)
4812 vdbg_printk(TPACPI_DBG_INIT
, "initializing light subdriver\n");
4814 if (tpacpi_is_ibm()) {
4815 TPACPI_ACPIHANDLE_INIT(ledb
);
4816 TPACPI_ACPIHANDLE_INIT(lght
);
4818 TPACPI_ACPIHANDLE_INIT(cmos
);
4819 INIT_WORK(&tpacpi_led_thinklight
.work
, light_set_status_worker
);
4821 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
4822 tp_features
.light
= (cmos_handle
|| lght_handle
) && !ledb_handle
;
4824 if (tp_features
.light
)
4825 /* light status not supported on
4826 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
4827 tp_features
.light_status
=
4828 acpi_evalf(ec_handle
, NULL
, "KBLT", "qv");
4830 vdbg_printk(TPACPI_DBG_INIT
, "light is %s, light status is %s\n",
4831 str_supported(tp_features
.light
),
4832 str_supported(tp_features
.light_status
));
4834 if (!tp_features
.light
)
4837 rc
= led_classdev_register(&tpacpi_pdev
->dev
,
4838 &tpacpi_led_thinklight
.led_classdev
);
4841 tp_features
.light
= 0;
4842 tp_features
.light_status
= 0;
4850 static void light_exit(void)
4852 led_classdev_unregister(&tpacpi_led_thinklight
.led_classdev
);
4853 flush_workqueue(tpacpi_wq
);
4856 static int light_read(struct seq_file
*m
)
4860 if (!tp_features
.light
) {
4861 seq_printf(m
, "status:\t\tnot supported\n");
4862 } else if (!tp_features
.light_status
) {
4863 seq_printf(m
, "status:\t\tunknown\n");
4864 seq_printf(m
, "commands:\ton, off\n");
4866 status
= light_get_status();
4869 seq_printf(m
, "status:\t\t%s\n", onoff(status
, 0));
4870 seq_printf(m
, "commands:\ton, off\n");
4876 static int light_write(char *buf
)
4881 if (!tp_features
.light
)
4884 while ((cmd
= next_cmd(&buf
))) {
4885 if (strlencmp(cmd
, "on") == 0) {
4887 } else if (strlencmp(cmd
, "off") == 0) {
4893 return light_set_status(newstatus
);
4896 static struct ibm_struct light_driver_data
= {
4899 .write
= light_write
,
4903 /*************************************************************************
4907 /* sysfs cmos_command -------------------------------------------------- */
4908 static ssize_t
cmos_command_store(struct device
*dev
,
4909 struct device_attribute
*attr
,
4910 const char *buf
, size_t count
)
4912 unsigned long cmos_cmd
;
4915 if (parse_strtoul(buf
, 21, &cmos_cmd
))
4918 res
= issue_thinkpad_cmos_command(cmos_cmd
);
4919 return (res
)? res
: count
;
4922 static struct device_attribute dev_attr_cmos_command
=
4923 __ATTR(cmos_command
, S_IWUSR
, NULL
, cmos_command_store
);
4925 /* --------------------------------------------------------------------- */
4927 static int __init
cmos_init(struct ibm_init_struct
*iibm
)
4931 vdbg_printk(TPACPI_DBG_INIT
,
4932 "initializing cmos commands subdriver\n");
4934 TPACPI_ACPIHANDLE_INIT(cmos
);
4936 vdbg_printk(TPACPI_DBG_INIT
, "cmos commands are %s\n",
4937 str_supported(cmos_handle
!= NULL
));
4939 res
= device_create_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4943 return (cmos_handle
)? 0 : 1;
4946 static void cmos_exit(void)
4948 device_remove_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4951 static int cmos_read(struct seq_file
*m
)
4953 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4954 R30, R31, T20-22, X20-21 */
4956 seq_printf(m
, "status:\t\tnot supported\n");
4958 seq_printf(m
, "status:\t\tsupported\n");
4959 seq_printf(m
, "commands:\t<cmd> (<cmd> is 0-21)\n");
4965 static int cmos_write(char *buf
)
4970 while ((cmd
= next_cmd(&buf
))) {
4971 if (sscanf(cmd
, "%u", &cmos_cmd
) == 1 &&
4972 cmos_cmd
>= 0 && cmos_cmd
<= 21) {
4977 res
= issue_thinkpad_cmos_command(cmos_cmd
);
4985 static struct ibm_struct cmos_driver_data
= {
4988 .write
= cmos_write
,
4992 /*************************************************************************
4996 enum led_access_mode
{
4997 TPACPI_LED_NONE
= 0,
4998 TPACPI_LED_570
, /* 570 */
4999 TPACPI_LED_OLD
, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5000 TPACPI_LED_NEW
, /* all others */
5003 enum { /* For TPACPI_LED_OLD */
5004 TPACPI_LED_EC_HLCL
= 0x0c, /* EC reg to get led to power on */
5005 TPACPI_LED_EC_HLBL
= 0x0d, /* EC reg to blink a lit led */
5006 TPACPI_LED_EC_HLMS
= 0x0e, /* EC reg to select led to command */
5009 static enum led_access_mode led_supported
;
5011 static acpi_handle led_handle
;
5013 #define TPACPI_LED_NUMLEDS 16
5014 static struct tpacpi_led_classdev
*tpacpi_leds
;
5015 static enum led_status_t tpacpi_led_state_cache
[TPACPI_LED_NUMLEDS
];
5016 static const char * const tpacpi_led_names
[TPACPI_LED_NUMLEDS
] = {
5017 /* there's a limit of 19 chars + NULL before 2.6.26 */
5019 "tpacpi:orange:batt",
5020 "tpacpi:green:batt",
5021 "tpacpi::dock_active",
5022 "tpacpi::bay_active",
5023 "tpacpi::dock_batt",
5024 "tpacpi::unknown_led",
5026 "tpacpi::dock_status1",
5027 "tpacpi::dock_status2",
5028 "tpacpi::unknown_led2",
5029 "tpacpi::unknown_led3",
5030 "tpacpi::thinkvantage",
5032 #define TPACPI_SAFE_LEDS 0x1081U
5034 static inline bool tpacpi_is_led_restricted(const unsigned int led
)
5036 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5039 return (1U & (TPACPI_SAFE_LEDS
>> led
)) == 0;
5043 static int led_get_status(const unsigned int led
)
5046 enum led_status_t led_s
;
5048 switch (led_supported
) {
5049 case TPACPI_LED_570
:
5050 if (!acpi_evalf(ec_handle
,
5051 &status
, "GLED", "dd", 1 << led
))
5053 led_s
= (status
== 0)?
5058 tpacpi_led_state_cache
[led
] = led_s
;
5067 static int led_set_status(const unsigned int led
,
5068 const enum led_status_t ledstatus
)
5070 /* off, on, blink. Index is led_status_t */
5071 static const unsigned int led_sled_arg1
[] = { 0, 1, 3 };
5072 static const unsigned int led_led_arg1
[] = { 0, 0x80, 0xc0 };
5076 switch (led_supported
) {
5077 case TPACPI_LED_570
:
5079 if (unlikely(led
> 7))
5081 if (unlikely(tpacpi_is_led_restricted(led
)))
5083 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
5084 (1 << led
), led_sled_arg1
[ledstatus
]))
5087 case TPACPI_LED_OLD
:
5088 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
5089 if (unlikely(led
> 7))
5091 if (unlikely(tpacpi_is_led_restricted(led
)))
5093 rc
= ec_write(TPACPI_LED_EC_HLMS
, (1 << led
));
5095 rc
= ec_write(TPACPI_LED_EC_HLBL
,
5096 (ledstatus
== TPACPI_LED_BLINK
) << led
);
5098 rc
= ec_write(TPACPI_LED_EC_HLCL
,
5099 (ledstatus
!= TPACPI_LED_OFF
) << led
);
5101 case TPACPI_LED_NEW
:
5103 if (unlikely(led
>= TPACPI_LED_NUMLEDS
))
5105 if (unlikely(tpacpi_is_led_restricted(led
)))
5107 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
5108 led
, led_led_arg1
[ledstatus
]))
5116 tpacpi_led_state_cache
[led
] = ledstatus
;
5121 static void led_set_status_worker(struct work_struct
*work
)
5123 struct tpacpi_led_classdev
*data
=
5124 container_of(work
, struct tpacpi_led_classdev
, work
);
5126 if (likely(tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
))
5127 led_set_status(data
->led
, data
->new_state
);
5130 static void led_sysfs_set(struct led_classdev
*led_cdev
,
5131 enum led_brightness brightness
)
5133 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
5134 struct tpacpi_led_classdev
, led_classdev
);
5136 if (brightness
== LED_OFF
)
5137 data
->new_state
= TPACPI_LED_OFF
;
5138 else if (tpacpi_led_state_cache
[data
->led
] != TPACPI_LED_BLINK
)
5139 data
->new_state
= TPACPI_LED_ON
;
5141 data
->new_state
= TPACPI_LED_BLINK
;
5143 queue_work(tpacpi_wq
, &data
->work
);
5146 static int led_sysfs_blink_set(struct led_classdev
*led_cdev
,
5147 unsigned long *delay_on
, unsigned long *delay_off
)
5149 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
5150 struct tpacpi_led_classdev
, led_classdev
);
5152 /* Can we choose the flash rate? */
5153 if (*delay_on
== 0 && *delay_off
== 0) {
5154 /* yes. set them to the hardware blink rate (1 Hz) */
5155 *delay_on
= 500; /* ms */
5156 *delay_off
= 500; /* ms */
5157 } else if ((*delay_on
!= 500) || (*delay_off
!= 500))
5160 data
->new_state
= TPACPI_LED_BLINK
;
5161 queue_work(tpacpi_wq
, &data
->work
);
5166 static enum led_brightness
led_sysfs_get(struct led_classdev
*led_cdev
)
5170 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
5171 struct tpacpi_led_classdev
, led_classdev
);
5173 rc
= led_get_status(data
->led
);
5175 if (rc
== TPACPI_LED_OFF
|| rc
< 0)
5176 rc
= LED_OFF
; /* no error handling in led class :( */
5183 static void led_exit(void)
5187 for (i
= 0; i
< TPACPI_LED_NUMLEDS
; i
++) {
5188 if (tpacpi_leds
[i
].led_classdev
.name
)
5189 led_classdev_unregister(&tpacpi_leds
[i
].led_classdev
);
5192 flush_workqueue(tpacpi_wq
);
5196 static int __init
tpacpi_init_led(unsigned int led
)
5200 tpacpi_leds
[led
].led
= led
;
5202 /* LEDs with no name don't get registered */
5203 if (!tpacpi_led_names
[led
])
5206 tpacpi_leds
[led
].led_classdev
.brightness_set
= &led_sysfs_set
;
5207 tpacpi_leds
[led
].led_classdev
.blink_set
= &led_sysfs_blink_set
;
5208 if (led_supported
== TPACPI_LED_570
)
5209 tpacpi_leds
[led
].led_classdev
.brightness_get
=
5212 tpacpi_leds
[led
].led_classdev
.name
= tpacpi_led_names
[led
];
5214 INIT_WORK(&tpacpi_leds
[led
].work
, led_set_status_worker
);
5216 rc
= led_classdev_register(&tpacpi_pdev
->dev
,
5217 &tpacpi_leds
[led
].led_classdev
);
5219 tpacpi_leds
[led
].led_classdev
.name
= NULL
;
5224 static const struct tpacpi_quirk led_useful_qtable
[] __initconst
= {
5225 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5226 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5227 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5229 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5230 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5231 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5232 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5233 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5234 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5235 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5236 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5238 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5239 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5240 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5241 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5242 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5244 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5245 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5246 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5247 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5249 /* (1) - may have excess leds enabled on MSB */
5251 /* Defaults (order matters, keep last, don't reorder!) */
5253 .vendor
= PCI_VENDOR_ID_LENOVO
,
5254 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_ANY
,
5257 { /* IBM ThinkPads with no EC version string */
5258 .vendor
= PCI_VENDOR_ID_IBM
,
5259 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_UNKNOWN
,
5262 { /* IBM ThinkPads with EC version string */
5263 .vendor
= PCI_VENDOR_ID_IBM
,
5264 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_ANY
,
5269 #undef TPACPI_LEDQ_IBM
5270 #undef TPACPI_LEDQ_LNV
5272 static enum led_access_mode __init
led_init_detect_mode(void)
5276 if (tpacpi_is_ibm()) {
5278 status
= acpi_get_handle(ec_handle
, "SLED", &led_handle
);
5279 if (ACPI_SUCCESS(status
))
5280 return TPACPI_LED_570
;
5282 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5283 status
= acpi_get_handle(ec_handle
, "SYSL", &led_handle
);
5284 if (ACPI_SUCCESS(status
))
5285 return TPACPI_LED_OLD
;
5289 status
= acpi_get_handle(ec_handle
, "LED", &led_handle
);
5290 if (ACPI_SUCCESS(status
))
5291 return TPACPI_LED_NEW
;
5293 /* R30, R31, and unknown firmwares */
5295 return TPACPI_LED_NONE
;
5298 static int __init
led_init(struct ibm_init_struct
*iibm
)
5302 unsigned long useful_leds
;
5304 vdbg_printk(TPACPI_DBG_INIT
, "initializing LED subdriver\n");
5306 led_supported
= led_init_detect_mode();
5308 if (led_supported
!= TPACPI_LED_NONE
) {
5309 useful_leds
= tpacpi_check_quirks(led_useful_qtable
,
5310 ARRAY_SIZE(led_useful_qtable
));
5314 led_supported
= TPACPI_LED_NONE
;
5318 vdbg_printk(TPACPI_DBG_INIT
, "LED commands are %s, mode %d\n",
5319 str_supported(led_supported
), led_supported
);
5321 if (led_supported
== TPACPI_LED_NONE
)
5324 tpacpi_leds
= kzalloc(sizeof(*tpacpi_leds
) * TPACPI_LED_NUMLEDS
,
5327 pr_err("Out of memory for LED data\n");
5331 for (i
= 0; i
< TPACPI_LED_NUMLEDS
; i
++) {
5332 tpacpi_leds
[i
].led
= -1;
5334 if (!tpacpi_is_led_restricted(i
) &&
5335 test_bit(i
, &useful_leds
)) {
5336 rc
= tpacpi_init_led(i
);
5344 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5345 pr_notice("warning: userspace override of important "
5346 "firmware LEDs is enabled\n");
5351 #define str_led_status(s) \
5352 ((s) == TPACPI_LED_OFF ? "off" : \
5353 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
5355 static int led_read(struct seq_file
*m
)
5357 if (!led_supported
) {
5358 seq_printf(m
, "status:\t\tnot supported\n");
5361 seq_printf(m
, "status:\t\tsupported\n");
5363 if (led_supported
== TPACPI_LED_570
) {
5366 for (i
= 0; i
< 8; i
++) {
5367 status
= led_get_status(i
);
5370 seq_printf(m
, "%d:\t\t%s\n",
5371 i
, str_led_status(status
));
5375 seq_printf(m
, "commands:\t"
5376 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
5381 static int led_write(char *buf
)
5385 enum led_status_t s
;
5390 while ((cmd
= next_cmd(&buf
))) {
5391 if (sscanf(cmd
, "%d", &led
) != 1)
5394 if (led
< 0 || led
> (TPACPI_LED_NUMLEDS
- 1) ||
5395 tpacpi_leds
[led
].led
< 0)
5398 if (strstr(cmd
, "off")) {
5400 } else if (strstr(cmd
, "on")) {
5402 } else if (strstr(cmd
, "blink")) {
5403 s
= TPACPI_LED_BLINK
;
5408 rc
= led_set_status(led
, s
);
5416 static struct ibm_struct led_driver_data
= {
5423 /*************************************************************************
5427 TPACPI_HANDLE(beep
, ec
, "BEEP"); /* all except R30, R31 */
5429 #define TPACPI_BEEP_Q1 0x0001
5431 static const struct tpacpi_quirk beep_quirk_table
[] __initconst
= {
5432 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1
), /* 570 */
5433 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1
), /* 570E - unverified */
5436 static int __init
beep_init(struct ibm_init_struct
*iibm
)
5438 unsigned long quirks
;
5440 vdbg_printk(TPACPI_DBG_INIT
, "initializing beep subdriver\n");
5442 TPACPI_ACPIHANDLE_INIT(beep
);
5444 vdbg_printk(TPACPI_DBG_INIT
, "beep is %s\n",
5445 str_supported(beep_handle
!= NULL
));
5447 quirks
= tpacpi_check_quirks(beep_quirk_table
,
5448 ARRAY_SIZE(beep_quirk_table
));
5450 tp_features
.beep_needs_two_args
= !!(quirks
& TPACPI_BEEP_Q1
);
5452 return (beep_handle
)? 0 : 1;
5455 static int beep_read(struct seq_file
*m
)
5458 seq_printf(m
, "status:\t\tnot supported\n");
5460 seq_printf(m
, "status:\t\tsupported\n");
5461 seq_printf(m
, "commands:\t<cmd> (<cmd> is 0-17)\n");
5467 static int beep_write(char *buf
)
5475 while ((cmd
= next_cmd(&buf
))) {
5476 if (sscanf(cmd
, "%u", &beep_cmd
) == 1 &&
5477 beep_cmd
>= 0 && beep_cmd
<= 17) {
5481 if (tp_features
.beep_needs_two_args
) {
5482 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vdd",
5486 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vd",
5495 static struct ibm_struct beep_driver_data
= {
5498 .write
= beep_write
,
5501 /*************************************************************************
5505 enum thermal_access_mode
{
5506 TPACPI_THERMAL_NONE
= 0, /* No thermal support */
5507 TPACPI_THERMAL_ACPI_TMP07
, /* Use ACPI TMP0-7 */
5508 TPACPI_THERMAL_ACPI_UPDT
, /* Use ACPI TMP0-7 with UPDT */
5509 TPACPI_THERMAL_TPEC_8
, /* Use ACPI EC regs, 8 sensors */
5510 TPACPI_THERMAL_TPEC_16
, /* Use ACPI EC regs, 16 sensors */
5513 enum { /* TPACPI_THERMAL_TPEC_* */
5514 TP_EC_THERMAL_TMP0
= 0x78, /* ACPI EC regs TMP 0..7 */
5515 TP_EC_THERMAL_TMP8
= 0xC0, /* ACPI EC regs TMP 8..15 */
5516 TP_EC_THERMAL_TMP_NA
= -128, /* ACPI EC sensor not available */
5518 TPACPI_THERMAL_SENSOR_NA
= -128000, /* Sensor not available */
5522 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5523 struct ibm_thermal_sensors_struct
{
5524 s32 temp
[TPACPI_MAX_THERMAL_SENSORS
];
5527 static enum thermal_access_mode thermal_read_mode
;
5529 /* idx is zero-based */
5530 static int thermal_get_sensor(int idx
, s32
*value
)
5536 t
= TP_EC_THERMAL_TMP0
;
5538 switch (thermal_read_mode
) {
5539 #if TPACPI_MAX_THERMAL_SENSORS >= 16
5540 case TPACPI_THERMAL_TPEC_16
:
5541 if (idx
>= 8 && idx
<= 15) {
5542 t
= TP_EC_THERMAL_TMP8
;
5547 case TPACPI_THERMAL_TPEC_8
:
5549 if (!acpi_ec_read(t
+ idx
, &tmp
))
5551 *value
= tmp
* 1000;
5556 case TPACPI_THERMAL_ACPI_UPDT
:
5558 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
5559 if (!acpi_evalf(ec_handle
, NULL
, "UPDT", "v"))
5561 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
5563 *value
= (t
- 2732) * 100;
5568 case TPACPI_THERMAL_ACPI_TMP07
:
5570 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
5571 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
5573 if (t
> 127 || t
< -127)
5574 t
= TP_EC_THERMAL_TMP_NA
;
5580 case TPACPI_THERMAL_NONE
:
5588 static int thermal_get_sensors(struct ibm_thermal_sensors_struct
*s
)
5599 if (thermal_read_mode
== TPACPI_THERMAL_TPEC_16
)
5602 for (i
= 0 ; i
< n
; i
++) {
5603 res
= thermal_get_sensor(i
, &s
->temp
[i
]);
5611 static void thermal_dump_all_sensors(void)
5614 struct ibm_thermal_sensors_struct t
;
5616 n
= thermal_get_sensors(&t
);
5620 pr_notice("temperatures (Celsius):");
5622 for (i
= 0; i
< n
; i
++) {
5623 if (t
.temp
[i
] != TPACPI_THERMAL_SENSOR_NA
)
5624 pr_cont(" %d", (int)(t
.temp
[i
] / 1000));
5632 /* sysfs temp##_input -------------------------------------------------- */
5634 static ssize_t
thermal_temp_input_show(struct device
*dev
,
5635 struct device_attribute
*attr
,
5638 struct sensor_device_attribute
*sensor_attr
=
5639 to_sensor_dev_attr(attr
);
5640 int idx
= sensor_attr
->index
;
5644 res
= thermal_get_sensor(idx
, &value
);
5647 if (value
== TPACPI_THERMAL_SENSOR_NA
)
5650 return snprintf(buf
, PAGE_SIZE
, "%d\n", value
);
5653 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
5654 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5655 thermal_temp_input_show, NULL, _idxB)
5657 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input
[] = {
5658 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5659 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5660 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5661 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5662 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5663 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5664 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5665 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5666 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5667 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5668 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5669 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5670 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5671 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5672 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5673 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5676 #define THERMAL_ATTRS(X) \
5677 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5679 static struct attribute
*thermal_temp_input_attr
[] = {
5699 static const struct attribute_group thermal_temp_input16_group
= {
5700 .attrs
= thermal_temp_input_attr
5703 static const struct attribute_group thermal_temp_input8_group
= {
5704 .attrs
= &thermal_temp_input_attr
[8]
5707 #undef THERMAL_SENSOR_ATTR_TEMP
5708 #undef THERMAL_ATTRS
5710 /* --------------------------------------------------------------------- */
5712 static int __init
thermal_init(struct ibm_init_struct
*iibm
)
5719 vdbg_printk(TPACPI_DBG_INIT
, "initializing thermal subdriver\n");
5721 acpi_tmp7
= acpi_evalf(ec_handle
, NULL
, "TMP7", "qv");
5723 if (thinkpad_id
.ec_model
) {
5725 * Direct EC access mode: sensors at registers
5726 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5727 * non-implemented, thermal sensors return 0x80 when
5732 for (i
= 0; i
< 8; i
++) {
5733 if (acpi_ec_read(TP_EC_THERMAL_TMP0
+ i
, &t
)) {
5739 if (acpi_ec_read(TP_EC_THERMAL_TMP8
+ i
, &t
)) {
5747 /* This is sheer paranoia, but we handle it anyway */
5749 pr_err("ThinkPad ACPI EC access misbehaving, "
5750 "falling back to ACPI TMPx access "
5752 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5754 pr_err("ThinkPad ACPI EC access misbehaving, "
5755 "disabling thermal sensors access\n");
5756 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5761 TPACPI_THERMAL_TPEC_16
: TPACPI_THERMAL_TPEC_8
;
5763 } else if (acpi_tmp7
) {
5764 if (tpacpi_is_ibm() &&
5765 acpi_evalf(ec_handle
, NULL
, "UPDT", "qv")) {
5766 /* 600e/x, 770e, 770x */
5767 thermal_read_mode
= TPACPI_THERMAL_ACPI_UPDT
;
5769 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
5770 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5773 /* temperatures not supported on 570, G4x, R30, R31, R32 */
5774 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5777 vdbg_printk(TPACPI_DBG_INIT
, "thermal is %s, mode %d\n",
5778 str_supported(thermal_read_mode
!= TPACPI_THERMAL_NONE
),
5781 switch (thermal_read_mode
) {
5782 case TPACPI_THERMAL_TPEC_16
:
5783 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5784 &thermal_temp_input16_group
);
5788 case TPACPI_THERMAL_TPEC_8
:
5789 case TPACPI_THERMAL_ACPI_TMP07
:
5790 case TPACPI_THERMAL_ACPI_UPDT
:
5791 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5792 &thermal_temp_input8_group
);
5796 case TPACPI_THERMAL_NONE
:
5804 static void thermal_exit(void)
5806 switch (thermal_read_mode
) {
5807 case TPACPI_THERMAL_TPEC_16
:
5808 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5809 &thermal_temp_input16_group
);
5811 case TPACPI_THERMAL_TPEC_8
:
5812 case TPACPI_THERMAL_ACPI_TMP07
:
5813 case TPACPI_THERMAL_ACPI_UPDT
:
5814 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5815 &thermal_temp_input8_group
);
5817 case TPACPI_THERMAL_NONE
:
5823 static int thermal_read(struct seq_file
*m
)
5826 struct ibm_thermal_sensors_struct t
;
5828 n
= thermal_get_sensors(&t
);
5829 if (unlikely(n
< 0))
5832 seq_printf(m
, "temperatures:\t");
5835 for (i
= 0; i
< (n
- 1); i
++)
5836 seq_printf(m
, "%d ", t
.temp
[i
] / 1000);
5837 seq_printf(m
, "%d\n", t
.temp
[i
] / 1000);
5839 seq_printf(m
, "not supported\n");
5844 static struct ibm_struct thermal_driver_data
= {
5846 .read
= thermal_read
,
5847 .exit
= thermal_exit
,
5850 /*************************************************************************
5851 * Backlight/brightness subdriver
5854 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5857 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5858 * CMOS NVRAM byte 0x5E, bits 0-3.
5860 * EC HBRV (0x31) has the following layout
5861 * Bit 7: unknown function
5862 * Bit 6: unknown function
5863 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5864 * Bit 4: must be set to zero to avoid problems
5865 * Bit 3-0: backlight brightness level
5867 * brightness_get_raw returns status data in the HBRV layout
5869 * WARNING: The X61 has been verified to use HBRV for something else, so
5870 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
5871 * testing on the very early *60 Lenovo models...
5875 TP_EC_BACKLIGHT
= 0x31,
5877 /* TP_EC_BACKLIGHT bitmasks */
5878 TP_EC_BACKLIGHT_LVLMSK
= 0x1F,
5879 TP_EC_BACKLIGHT_CMDMSK
= 0xE0,
5880 TP_EC_BACKLIGHT_MAPSW
= 0x20,
5883 enum tpacpi_brightness_access_mode
{
5884 TPACPI_BRGHT_MODE_AUTO
= 0, /* Not implemented yet */
5885 TPACPI_BRGHT_MODE_EC
, /* EC control */
5886 TPACPI_BRGHT_MODE_UCMS_STEP
, /* UCMS step-based control */
5887 TPACPI_BRGHT_MODE_ECNVRAM
, /* EC control w/ NVRAM store */
5888 TPACPI_BRGHT_MODE_MAX
5891 static struct backlight_device
*ibm_backlight_device
;
5893 static enum tpacpi_brightness_access_mode brightness_mode
=
5894 TPACPI_BRGHT_MODE_MAX
;
5896 static unsigned int brightness_enable
= 2; /* 2 = auto, 0 = no, 1 = yes */
5898 static struct mutex brightness_mutex
;
5900 /* NVRAM brightness access,
5901 * call with brightness_mutex held! */
5902 static unsigned int tpacpi_brightness_nvram_get(void)
5906 lnvram
= (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
)
5907 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
5908 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
5909 lnvram
&= bright_maxlvl
;
5914 static void tpacpi_brightness_checkpoint_nvram(void)
5919 if (brightness_mode
!= TPACPI_BRGHT_MODE_ECNVRAM
)
5922 vdbg_printk(TPACPI_DBG_BRGHT
,
5923 "trying to checkpoint backlight level to NVRAM...\n");
5925 if (mutex_lock_killable(&brightness_mutex
) < 0)
5928 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
5930 lec
&= TP_EC_BACKLIGHT_LVLMSK
;
5931 b_nvram
= nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
);
5933 if (lec
!= ((b_nvram
& TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
5934 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
)) {
5935 /* NVRAM needs update */
5936 b_nvram
&= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS
<<
5937 TP_NVRAM_POS_LEVEL_BRIGHTNESS
);
5939 nvram_write_byte(b_nvram
, TP_NVRAM_ADDR_BRIGHTNESS
);
5940 dbg_printk(TPACPI_DBG_BRGHT
,
5941 "updated NVRAM backlight level to %u (0x%02x)\n",
5942 (unsigned int) lec
, (unsigned int) b_nvram
);
5944 vdbg_printk(TPACPI_DBG_BRGHT
,
5945 "NVRAM backlight level already is %u (0x%02x)\n",
5946 (unsigned int) lec
, (unsigned int) b_nvram
);
5949 mutex_unlock(&brightness_mutex
);
5953 /* call with brightness_mutex held! */
5954 static int tpacpi_brightness_get_raw(int *status
)
5958 switch (brightness_mode
) {
5959 case TPACPI_BRGHT_MODE_UCMS_STEP
:
5960 *status
= tpacpi_brightness_nvram_get();
5962 case TPACPI_BRGHT_MODE_EC
:
5963 case TPACPI_BRGHT_MODE_ECNVRAM
:
5964 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
5973 /* call with brightness_mutex held! */
5974 /* do NOT call with illegal backlight level value */
5975 static int tpacpi_brightness_set_ec(unsigned int value
)
5979 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
5982 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT
,
5983 (lec
& TP_EC_BACKLIGHT_CMDMSK
) |
5984 (value
& TP_EC_BACKLIGHT_LVLMSK
))))
5990 /* call with brightness_mutex held! */
5991 static int tpacpi_brightness_set_ucmsstep(unsigned int value
)
5994 unsigned int current_value
, i
;
5996 current_value
= tpacpi_brightness_nvram_get();
5998 if (value
== current_value
)
6001 cmos_cmd
= (value
> current_value
) ?
6002 TP_CMOS_BRIGHTNESS_UP
:
6003 TP_CMOS_BRIGHTNESS_DOWN
;
6004 inc
= (value
> current_value
) ? 1 : -1;
6006 for (i
= current_value
; i
!= value
; i
+= inc
)
6007 if (issue_thinkpad_cmos_command(cmos_cmd
))
6013 /* May return EINTR which can always be mapped to ERESTARTSYS */
6014 static int brightness_set(unsigned int value
)
6018 if (value
> bright_maxlvl
|| value
< 0)
6021 vdbg_printk(TPACPI_DBG_BRGHT
,
6022 "set backlight level to %d\n", value
);
6024 res
= mutex_lock_killable(&brightness_mutex
);
6028 switch (brightness_mode
) {
6029 case TPACPI_BRGHT_MODE_EC
:
6030 case TPACPI_BRGHT_MODE_ECNVRAM
:
6031 res
= tpacpi_brightness_set_ec(value
);
6033 case TPACPI_BRGHT_MODE_UCMS_STEP
:
6034 res
= tpacpi_brightness_set_ucmsstep(value
);
6040 mutex_unlock(&brightness_mutex
);
6044 /* sysfs backlight class ----------------------------------------------- */
6046 static int brightness_update_status(struct backlight_device
*bd
)
6048 unsigned int level
=
6049 (bd
->props
.fb_blank
== FB_BLANK_UNBLANK
&&
6050 bd
->props
.power
== FB_BLANK_UNBLANK
) ?
6051 bd
->props
.brightness
: 0;
6053 dbg_printk(TPACPI_DBG_BRGHT
,
6054 "backlight: attempt to set level to %d\n",
6057 /* it is the backlight class's job (caller) to handle
6058 * EINTR and other errors properly */
6059 return brightness_set(level
);
6062 static int brightness_get(struct backlight_device
*bd
)
6066 res
= mutex_lock_killable(&brightness_mutex
);
6070 res
= tpacpi_brightness_get_raw(&status
);
6072 mutex_unlock(&brightness_mutex
);
6077 return status
& TP_EC_BACKLIGHT_LVLMSK
;
6080 static void tpacpi_brightness_notify_change(void)
6082 backlight_force_update(ibm_backlight_device
,
6083 BACKLIGHT_UPDATE_HOTKEY
);
6086 static const struct backlight_ops ibm_backlight_data
= {
6087 .get_brightness
= brightness_get
,
6088 .update_status
= brightness_update_status
,
6091 /* --------------------------------------------------------------------- */
6094 * Call _BCL method of video device. On some ThinkPads this will
6095 * switch the firmware to the ACPI brightness control mode.
6098 static int __init
tpacpi_query_bcl_levels(acpi_handle handle
)
6100 struct acpi_buffer buffer
= { ACPI_ALLOCATE_BUFFER
, NULL
};
6101 union acpi_object
*obj
;
6102 struct acpi_device
*device
, *child
;
6105 if (acpi_bus_get_device(handle
, &device
))
6109 list_for_each_entry(child
, &device
->children
, node
) {
6110 acpi_status status
= acpi_evaluate_object(child
->handle
, "_BCL",
6112 if (ACPI_FAILURE(status
))
6115 obj
= (union acpi_object
*)buffer
.pointer
;
6116 if (!obj
|| (obj
->type
!= ACPI_TYPE_PACKAGE
)) {
6117 pr_err("Unknown _BCL data, please report this to %s\n",
6121 rc
= obj
->package
.count
;
6126 kfree(buffer
.pointer
);
6132 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
6134 static unsigned int __init
tpacpi_check_std_acpi_brightness_support(void)
6136 acpi_handle video_device
;
6139 tpacpi_acpi_handle_locate("video", NULL
, &video_device
);
6141 bcl_levels
= tpacpi_query_bcl_levels(video_device
);
6143 tp_features
.bright_acpimode
= (bcl_levels
> 0);
6145 return (bcl_levels
> 2) ? (bcl_levels
- 2) : 0;
6149 * These are only useful for models that have only one possibility
6150 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6153 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6154 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6155 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6157 static const struct tpacpi_quirk brightness_quirk_table
[] __initconst
= {
6158 /* Models with ATI GPUs known to require ECNVRAM mode */
6159 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC
), /* T43/p ATI */
6161 /* Models with ATI GPUs that can use ECNVRAM */
6162 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC
), /* R50,51 T40-42 */
6163 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6164 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC
), /* R52 */
6165 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6167 /* Models with Intel Extreme Graphics 2 */
6168 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC
), /* X40 */
6169 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6170 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6172 /* Models with Intel GMA900 */
6173 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC
), /* T43, R52 */
6174 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC
), /* X41 */
6175 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC
), /* X41 Tablet */
6179 * Returns < 0 for error, otherwise sets tp_features.bright_*
6180 * and bright_maxlvl.
6182 static void __init
tpacpi_detect_brightness_capabilities(void)
6186 vdbg_printk(TPACPI_DBG_INIT
,
6187 "detecting firmware brightness interface capabilities\n");
6189 /* we could run a quirks check here (same table used by
6190 * brightness_init) if needed */
6193 * We always attempt to detect acpi support, so as to switch
6194 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6195 * going to publish a backlight interface
6197 b
= tpacpi_check_std_acpi_brightness_support();
6201 pr_info("detected a 16-level brightness capable ThinkPad\n");
6206 pr_info("detected a 8-level brightness capable ThinkPad\n");
6209 pr_err("Unsupported brightness interface, "
6210 "please contact %s\n", TPACPI_MAIL
);
6211 tp_features
.bright_unkfw
= 1;
6212 bright_maxlvl
= b
- 1;
6216 static int __init
brightness_init(struct ibm_init_struct
*iibm
)
6218 struct backlight_properties props
;
6220 unsigned long quirks
;
6222 vdbg_printk(TPACPI_DBG_INIT
, "initializing brightness subdriver\n");
6224 mutex_init(&brightness_mutex
);
6226 quirks
= tpacpi_check_quirks(brightness_quirk_table
,
6227 ARRAY_SIZE(brightness_quirk_table
));
6229 /* tpacpi_detect_brightness_capabilities() must have run already */
6231 /* if it is unknown, we don't handle it: it wouldn't be safe */
6232 if (tp_features
.bright_unkfw
)
6235 if (!brightness_enable
) {
6236 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_BRGHT
,
6237 "brightness support disabled by "
6238 "module parameter\n");
6242 if (acpi_video_backlight_support()) {
6243 if (brightness_enable
> 1) {
6244 pr_info("Standard ACPI backlight interface "
6245 "available, not loading native one\n");
6247 } else if (brightness_enable
== 1) {
6248 pr_warn("Cannot enable backlight brightness support, "
6249 "ACPI is already handling it. Refer to the "
6250 "acpi_backlight kernel parameter.\n");
6253 } else if (tp_features
.bright_acpimode
&& brightness_enable
> 1) {
6254 pr_notice("Standard ACPI backlight interface not "
6255 "available, thinkpad_acpi native "
6256 "brightness control enabled\n");
6260 * Check for module parameter bogosity, note that we
6261 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6262 * able to detect "unspecified"
6264 if (brightness_mode
> TPACPI_BRGHT_MODE_MAX
)
6267 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6268 if (brightness_mode
== TPACPI_BRGHT_MODE_AUTO
||
6269 brightness_mode
== TPACPI_BRGHT_MODE_MAX
) {
6270 if (quirks
& TPACPI_BRGHT_Q_EC
)
6271 brightness_mode
= TPACPI_BRGHT_MODE_ECNVRAM
;
6273 brightness_mode
= TPACPI_BRGHT_MODE_UCMS_STEP
;
6275 dbg_printk(TPACPI_DBG_BRGHT
,
6276 "driver auto-selected brightness_mode=%d\n",
6281 if (!tpacpi_is_ibm() &&
6282 (brightness_mode
== TPACPI_BRGHT_MODE_ECNVRAM
||
6283 brightness_mode
== TPACPI_BRGHT_MODE_EC
))
6286 if (tpacpi_brightness_get_raw(&b
) < 0)
6289 memset(&props
, 0, sizeof(struct backlight_properties
));
6290 props
.type
= BACKLIGHT_PLATFORM
;
6291 props
.max_brightness
= bright_maxlvl
;
6292 props
.brightness
= b
& TP_EC_BACKLIGHT_LVLMSK
;
6293 ibm_backlight_device
= backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME
,
6295 &ibm_backlight_data
,
6297 if (IS_ERR(ibm_backlight_device
)) {
6298 int rc
= PTR_ERR(ibm_backlight_device
);
6299 ibm_backlight_device
= NULL
;
6300 pr_err("Could not register backlight device\n");
6303 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_BRGHT
,
6304 "brightness is supported\n");
6306 if (quirks
& TPACPI_BRGHT_Q_ASK
) {
6307 pr_notice("brightness: will use unverified default: "
6308 "brightness_mode=%d\n", brightness_mode
);
6309 pr_notice("brightness: please report to %s whether it works well "
6310 "or not on your ThinkPad\n", TPACPI_MAIL
);
6313 /* Added by mistake in early 2007. Probably useless, but it could
6314 * be working around some unknown firmware problem where the value
6315 * read at startup doesn't match the real hardware state... so leave
6316 * it in place just in case */
6317 backlight_update_status(ibm_backlight_device
);
6319 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_BRGHT
,
6320 "brightness: registering brightness hotkeys "
6321 "as change notification\n");
6322 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6323 | TP_ACPI_HKEY_BRGHTUP_MASK
6324 | TP_ACPI_HKEY_BRGHTDWN_MASK
);
6328 static void brightness_suspend(void)
6330 tpacpi_brightness_checkpoint_nvram();
6333 static void brightness_shutdown(void)
6335 tpacpi_brightness_checkpoint_nvram();
6338 static void brightness_exit(void)
6340 if (ibm_backlight_device
) {
6341 vdbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_BRGHT
,
6342 "calling backlight_device_unregister()\n");
6343 backlight_device_unregister(ibm_backlight_device
);
6346 tpacpi_brightness_checkpoint_nvram();
6349 static int brightness_read(struct seq_file
*m
)
6353 level
= brightness_get(NULL
);
6355 seq_printf(m
, "level:\t\tunreadable\n");
6357 seq_printf(m
, "level:\t\t%d\n", level
);
6358 seq_printf(m
, "commands:\tup, down\n");
6359 seq_printf(m
, "commands:\tlevel <level> (<level> is 0-%d)\n",
6366 static int brightness_write(char *buf
)
6372 level
= brightness_get(NULL
);
6376 while ((cmd
= next_cmd(&buf
))) {
6377 if (strlencmp(cmd
, "up") == 0) {
6378 if (level
< bright_maxlvl
)
6380 } else if (strlencmp(cmd
, "down") == 0) {
6383 } else if (sscanf(cmd
, "level %d", &level
) == 1 &&
6384 level
>= 0 && level
<= bright_maxlvl
) {
6390 tpacpi_disclose_usertask("procfs brightness",
6391 "set level to %d\n", level
);
6394 * Now we know what the final level should be, so we try to set it.
6395 * Doing it this way makes the syscall restartable in case of EINTR
6397 rc
= brightness_set(level
);
6398 if (!rc
&& ibm_backlight_device
)
6399 backlight_force_update(ibm_backlight_device
,
6400 BACKLIGHT_UPDATE_SYSFS
);
6401 return (rc
== -EINTR
)? -ERESTARTSYS
: rc
;
6404 static struct ibm_struct brightness_driver_data
= {
6405 .name
= "brightness",
6406 .read
= brightness_read
,
6407 .write
= brightness_write
,
6408 .exit
= brightness_exit
,
6409 .suspend
= brightness_suspend
,
6410 .shutdown
= brightness_shutdown
,
6413 /*************************************************************************
6418 * IBM ThinkPads have a simple volume controller with MUTE gating.
6419 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
6421 * Since the *61 series (and probably also the later *60 series), Lenovo
6422 * ThinkPads only implement the MUTE gate.
6425 * Bit 6: MUTE (1 mutes sound)
6427 * Other bits should be zero as far as we know.
6429 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
6430 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
6431 * such as bit 7 which is used to detect repeated presses of MUTE,
6432 * and we leave them unchanged.
6435 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
6437 #define TPACPI_ALSA_DRVNAME "ThinkPad EC"
6438 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
6439 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
6441 #if SNDRV_CARDS <= 32
6442 #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1)
6444 #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1)
6446 static int alsa_index
= DEFAULT_ALSA_IDX
; /* last three slots */
6447 static char *alsa_id
= "ThinkPadEC";
6448 static bool alsa_enable
= SNDRV_DEFAULT_ENABLE1
;
6450 struct tpacpi_alsa_data
{
6451 struct snd_card
*card
;
6452 struct snd_ctl_elem_id
*ctl_mute_id
;
6453 struct snd_ctl_elem_id
*ctl_vol_id
;
6456 static struct snd_card
*alsa_card
;
6461 /* TP_EC_AUDIO bits */
6462 TP_EC_AUDIO_MUTESW
= 6,
6464 /* TP_EC_AUDIO bitmasks */
6465 TP_EC_AUDIO_LVL_MSK
= 0x0F,
6466 TP_EC_AUDIO_MUTESW_MSK
= (1 << TP_EC_AUDIO_MUTESW
),
6468 /* Maximum volume */
6469 TP_EC_VOLUME_MAX
= 14,
6472 enum tpacpi_volume_access_mode
{
6473 TPACPI_VOL_MODE_AUTO
= 0, /* Not implemented yet */
6474 TPACPI_VOL_MODE_EC
, /* Pure EC control */
6475 TPACPI_VOL_MODE_UCMS_STEP
, /* UCMS step-based control: N/A */
6476 TPACPI_VOL_MODE_ECNVRAM
, /* EC control w/ NVRAM store */
6480 enum tpacpi_volume_capabilities
{
6481 TPACPI_VOL_CAP_AUTO
= 0, /* Use white/blacklist */
6482 TPACPI_VOL_CAP_VOLMUTE
, /* Output vol and mute */
6483 TPACPI_VOL_CAP_MUTEONLY
, /* Output mute only */
6487 static enum tpacpi_volume_access_mode volume_mode
=
6488 TPACPI_VOL_MODE_MAX
;
6490 static enum tpacpi_volume_capabilities volume_capabilities
;
6491 static bool volume_control_allowed
;
6494 * Used to syncronize writers to TP_EC_AUDIO and
6495 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
6497 static struct mutex volume_mutex
;
6499 static void tpacpi_volume_checkpoint_nvram(void)
6505 if (volume_mode
!= TPACPI_VOL_MODE_ECNVRAM
)
6507 if (!volume_control_allowed
)
6510 vdbg_printk(TPACPI_DBG_MIXER
,
6511 "trying to checkpoint mixer state to NVRAM...\n");
6513 if (tp_features
.mixer_no_level_control
)
6514 ec_mask
= TP_EC_AUDIO_MUTESW_MSK
;
6516 ec_mask
= TP_EC_AUDIO_MUTESW_MSK
| TP_EC_AUDIO_LVL_MSK
;
6518 if (mutex_lock_killable(&volume_mutex
) < 0)
6521 if (unlikely(!acpi_ec_read(TP_EC_AUDIO
, &lec
)))
6524 b_nvram
= nvram_read_byte(TP_NVRAM_ADDR_MIXER
);
6526 if (lec
!= (b_nvram
& ec_mask
)) {
6527 /* NVRAM needs update */
6528 b_nvram
&= ~ec_mask
;
6530 nvram_write_byte(b_nvram
, TP_NVRAM_ADDR_MIXER
);
6531 dbg_printk(TPACPI_DBG_MIXER
,
6532 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
6533 (unsigned int) lec
, (unsigned int) b_nvram
);
6535 vdbg_printk(TPACPI_DBG_MIXER
,
6536 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
6537 (unsigned int) lec
, (unsigned int) b_nvram
);
6541 mutex_unlock(&volume_mutex
);
6544 static int volume_get_status_ec(u8
*status
)
6548 if (!acpi_ec_read(TP_EC_AUDIO
, &s
))
6553 dbg_printk(TPACPI_DBG_MIXER
, "status 0x%02x\n", s
);
6558 static int volume_get_status(u8
*status
)
6560 return volume_get_status_ec(status
);
6563 static int volume_set_status_ec(const u8 status
)
6565 if (!acpi_ec_write(TP_EC_AUDIO
, status
))
6568 dbg_printk(TPACPI_DBG_MIXER
, "set EC mixer to 0x%02x\n", status
);
6573 static int volume_set_status(const u8 status
)
6575 return volume_set_status_ec(status
);
6578 /* returns < 0 on error, 0 on no change, 1 on change */
6579 static int __volume_set_mute_ec(const bool mute
)
6584 if (mutex_lock_killable(&volume_mutex
) < 0)
6587 rc
= volume_get_status_ec(&s
);
6591 n
= (mute
) ? s
| TP_EC_AUDIO_MUTESW_MSK
:
6592 s
& ~TP_EC_AUDIO_MUTESW_MSK
;
6595 rc
= volume_set_status_ec(n
);
6601 mutex_unlock(&volume_mutex
);
6605 static int volume_alsa_set_mute(const bool mute
)
6607 dbg_printk(TPACPI_DBG_MIXER
, "ALSA: trying to %smute\n",
6608 (mute
) ? "" : "un");
6609 return __volume_set_mute_ec(mute
);
6612 static int volume_set_mute(const bool mute
)
6616 dbg_printk(TPACPI_DBG_MIXER
, "trying to %smute\n",
6617 (mute
) ? "" : "un");
6619 rc
= __volume_set_mute_ec(mute
);
6620 return (rc
< 0) ? rc
: 0;
6623 /* returns < 0 on error, 0 on no change, 1 on change */
6624 static int __volume_set_volume_ec(const u8 vol
)
6629 if (vol
> TP_EC_VOLUME_MAX
)
6632 if (mutex_lock_killable(&volume_mutex
) < 0)
6635 rc
= volume_get_status_ec(&s
);
6639 n
= (s
& ~TP_EC_AUDIO_LVL_MSK
) | vol
;
6642 rc
= volume_set_status_ec(n
);
6648 mutex_unlock(&volume_mutex
);
6652 static int volume_alsa_set_volume(const u8 vol
)
6654 dbg_printk(TPACPI_DBG_MIXER
,
6655 "ALSA: trying to set volume level to %hu\n", vol
);
6656 return __volume_set_volume_ec(vol
);
6659 static void volume_alsa_notify_change(void)
6661 struct tpacpi_alsa_data
*d
;
6663 if (alsa_card
&& alsa_card
->private_data
) {
6664 d
= alsa_card
->private_data
;
6666 snd_ctl_notify(alsa_card
,
6667 SNDRV_CTL_EVENT_MASK_VALUE
,
6670 snd_ctl_notify(alsa_card
,
6671 SNDRV_CTL_EVENT_MASK_VALUE
,
6676 static int volume_alsa_vol_info(struct snd_kcontrol
*kcontrol
,
6677 struct snd_ctl_elem_info
*uinfo
)
6679 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
6681 uinfo
->value
.integer
.min
= 0;
6682 uinfo
->value
.integer
.max
= TP_EC_VOLUME_MAX
;
6686 static int volume_alsa_vol_get(struct snd_kcontrol
*kcontrol
,
6687 struct snd_ctl_elem_value
*ucontrol
)
6692 rc
= volume_get_status(&s
);
6696 ucontrol
->value
.integer
.value
[0] = s
& TP_EC_AUDIO_LVL_MSK
;
6700 static int volume_alsa_vol_put(struct snd_kcontrol
*kcontrol
,
6701 struct snd_ctl_elem_value
*ucontrol
)
6703 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
6704 ucontrol
->value
.integer
.value
[0]);
6705 return volume_alsa_set_volume(ucontrol
->value
.integer
.value
[0]);
6708 #define volume_alsa_mute_info snd_ctl_boolean_mono_info
6710 static int volume_alsa_mute_get(struct snd_kcontrol
*kcontrol
,
6711 struct snd_ctl_elem_value
*ucontrol
)
6716 rc
= volume_get_status(&s
);
6720 ucontrol
->value
.integer
.value
[0] =
6721 (s
& TP_EC_AUDIO_MUTESW_MSK
) ? 0 : 1;
6725 static int volume_alsa_mute_put(struct snd_kcontrol
*kcontrol
,
6726 struct snd_ctl_elem_value
*ucontrol
)
6728 tpacpi_disclose_usertask("ALSA", "%smute\n",
6729 ucontrol
->value
.integer
.value
[0] ?
6731 return volume_alsa_set_mute(!ucontrol
->value
.integer
.value
[0]);
6734 static struct snd_kcontrol_new volume_alsa_control_vol
= {
6735 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
6736 .name
= "Console Playback Volume",
6738 .access
= SNDRV_CTL_ELEM_ACCESS_READ
,
6739 .info
= volume_alsa_vol_info
,
6740 .get
= volume_alsa_vol_get
,
6743 static struct snd_kcontrol_new volume_alsa_control_mute
= {
6744 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
6745 .name
= "Console Playback Switch",
6747 .access
= SNDRV_CTL_ELEM_ACCESS_READ
,
6748 .info
= volume_alsa_mute_info
,
6749 .get
= volume_alsa_mute_get
,
6752 static void volume_suspend(void)
6754 tpacpi_volume_checkpoint_nvram();
6757 static void volume_resume(void)
6759 volume_alsa_notify_change();
6762 static void volume_shutdown(void)
6764 tpacpi_volume_checkpoint_nvram();
6767 static void volume_exit(void)
6770 snd_card_free(alsa_card
);
6774 tpacpi_volume_checkpoint_nvram();
6777 static int __init
volume_create_alsa_mixer(void)
6779 struct snd_card
*card
;
6780 struct tpacpi_alsa_data
*data
;
6781 struct snd_kcontrol
*ctl_vol
;
6782 struct snd_kcontrol
*ctl_mute
;
6785 rc
= snd_card_create(alsa_index
, alsa_id
, THIS_MODULE
,
6786 sizeof(struct tpacpi_alsa_data
), &card
);
6787 if (rc
< 0 || !card
) {
6788 pr_err("Failed to create ALSA card structures: %d\n", rc
);
6792 BUG_ON(!card
->private_data
);
6793 data
= card
->private_data
;
6796 strlcpy(card
->driver
, TPACPI_ALSA_DRVNAME
,
6797 sizeof(card
->driver
));
6798 strlcpy(card
->shortname
, TPACPI_ALSA_SHRTNAME
,
6799 sizeof(card
->shortname
));
6800 snprintf(card
->mixername
, sizeof(card
->mixername
), "ThinkPad EC %s",
6801 (thinkpad_id
.ec_version_str
) ?
6802 thinkpad_id
.ec_version_str
: "(unknown)");
6803 snprintf(card
->longname
, sizeof(card
->longname
),
6804 "%s at EC reg 0x%02x, fw %s", card
->shortname
, TP_EC_AUDIO
,
6805 (thinkpad_id
.ec_version_str
) ?
6806 thinkpad_id
.ec_version_str
: "unknown");
6808 if (volume_control_allowed
) {
6809 volume_alsa_control_vol
.put
= volume_alsa_vol_put
;
6810 volume_alsa_control_vol
.access
=
6811 SNDRV_CTL_ELEM_ACCESS_READWRITE
;
6813 volume_alsa_control_mute
.put
= volume_alsa_mute_put
;
6814 volume_alsa_control_mute
.access
=
6815 SNDRV_CTL_ELEM_ACCESS_READWRITE
;
6818 if (!tp_features
.mixer_no_level_control
) {
6819 ctl_vol
= snd_ctl_new1(&volume_alsa_control_vol
, NULL
);
6820 rc
= snd_ctl_add(card
, ctl_vol
);
6822 pr_err("Failed to create ALSA volume control: %d\n",
6826 data
->ctl_vol_id
= &ctl_vol
->id
;
6829 ctl_mute
= snd_ctl_new1(&volume_alsa_control_mute
, NULL
);
6830 rc
= snd_ctl_add(card
, ctl_mute
);
6832 pr_err("Failed to create ALSA mute control: %d\n", rc
);
6835 data
->ctl_mute_id
= &ctl_mute
->id
;
6837 snd_card_set_dev(card
, &tpacpi_pdev
->dev
);
6838 rc
= snd_card_register(card
);
6840 pr_err("Failed to register ALSA card: %d\n", rc
);
6848 snd_card_free(card
);
6852 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
6853 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
6855 static const struct tpacpi_quirk volume_quirk_table
[] __initconst
= {
6856 /* Whitelist volume level on all IBM by default */
6857 { .vendor
= PCI_VENDOR_ID_IBM
,
6858 .bios
= TPACPI_MATCH_ANY
,
6859 .ec
= TPACPI_MATCH_ANY
,
6860 .quirks
= TPACPI_VOL_Q_LEVEL
},
6862 /* Lenovo models with volume control (needs confirmation) */
6863 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL
), /* R60/i */
6864 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL
), /* R60e/i */
6865 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL
), /* T60/p */
6866 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL
), /* X60/s */
6867 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL
), /* X60t */
6868 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL
), /* Z60 */
6869 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL
), /* Z61 */
6871 /* Whitelist mute-only on all Lenovo by default */
6872 { .vendor
= PCI_VENDOR_ID_LENOVO
,
6873 .bios
= TPACPI_MATCH_ANY
,
6874 .ec
= TPACPI_MATCH_ANY
,
6875 .quirks
= TPACPI_VOL_Q_MUTEONLY
}
6878 static int __init
volume_init(struct ibm_init_struct
*iibm
)
6880 unsigned long quirks
;
6883 vdbg_printk(TPACPI_DBG_INIT
, "initializing volume subdriver\n");
6885 mutex_init(&volume_mutex
);
6888 * Check for module parameter bogosity, note that we
6889 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
6890 * able to detect "unspecified"
6892 if (volume_mode
> TPACPI_VOL_MODE_MAX
)
6895 if (volume_mode
== TPACPI_VOL_MODE_UCMS_STEP
) {
6896 pr_err("UCMS step volume mode not implemented, "
6897 "please contact %s\n", TPACPI_MAIL
);
6901 if (volume_capabilities
>= TPACPI_VOL_CAP_MAX
)
6905 * The ALSA mixer is our primary interface.
6906 * When disabled, don't install the subdriver at all
6909 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6910 "ALSA mixer disabled by parameter, "
6911 "not loading volume subdriver...\n");
6915 quirks
= tpacpi_check_quirks(volume_quirk_table
,
6916 ARRAY_SIZE(volume_quirk_table
));
6918 switch (volume_capabilities
) {
6919 case TPACPI_VOL_CAP_AUTO
:
6920 if (quirks
& TPACPI_VOL_Q_MUTEONLY
)
6921 tp_features
.mixer_no_level_control
= 1;
6922 else if (quirks
& TPACPI_VOL_Q_LEVEL
)
6923 tp_features
.mixer_no_level_control
= 0;
6925 return 1; /* no mixer */
6927 case TPACPI_VOL_CAP_VOLMUTE
:
6928 tp_features
.mixer_no_level_control
= 0;
6930 case TPACPI_VOL_CAP_MUTEONLY
:
6931 tp_features
.mixer_no_level_control
= 1;
6937 if (volume_capabilities
!= TPACPI_VOL_CAP_AUTO
)
6938 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6939 "using user-supplied volume_capabilities=%d\n",
6940 volume_capabilities
);
6942 if (volume_mode
== TPACPI_VOL_MODE_AUTO
||
6943 volume_mode
== TPACPI_VOL_MODE_MAX
) {
6944 volume_mode
= TPACPI_VOL_MODE_ECNVRAM
;
6946 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6947 "driver auto-selected volume_mode=%d\n",
6950 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6951 "using user-supplied volume_mode=%d\n",
6955 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6956 "mute is supported, volume control is %s\n",
6957 str_supported(!tp_features
.mixer_no_level_control
));
6959 rc
= volume_create_alsa_mixer();
6961 pr_err("Could not create the ALSA mixer interface\n");
6965 pr_info("Console audio control enabled, mode: %s\n",
6966 (volume_control_allowed
) ?
6967 "override (read/write)" :
6968 "monitor (read only)");
6970 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6971 "registering volume hotkeys as change notification\n");
6972 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6973 | TP_ACPI_HKEY_VOLUP_MASK
6974 | TP_ACPI_HKEY_VOLDWN_MASK
6975 | TP_ACPI_HKEY_MUTE_MASK
);
6980 static int volume_read(struct seq_file
*m
)
6984 if (volume_get_status(&status
) < 0) {
6985 seq_printf(m
, "level:\t\tunreadable\n");
6987 if (tp_features
.mixer_no_level_control
)
6988 seq_printf(m
, "level:\t\tunsupported\n");
6990 seq_printf(m
, "level:\t\t%d\n",
6991 status
& TP_EC_AUDIO_LVL_MSK
);
6993 seq_printf(m
, "mute:\t\t%s\n",
6994 onoff(status
, TP_EC_AUDIO_MUTESW
));
6996 if (volume_control_allowed
) {
6997 seq_printf(m
, "commands:\tunmute, mute\n");
6998 if (!tp_features
.mixer_no_level_control
) {
7000 "commands:\tup, down\n");
7002 "commands:\tlevel <level>"
7003 " (<level> is 0-%d)\n",
7012 static int volume_write(char *buf
)
7015 u8 new_level
, new_mute
;
7021 * We do allow volume control at driver startup, so that the
7022 * user can set initial state through the volume=... parameter hack.
7024 if (!volume_control_allowed
&& tpacpi_lifecycle
!= TPACPI_LIFE_INIT
) {
7025 if (unlikely(!tp_warned
.volume_ctrl_forbidden
)) {
7026 tp_warned
.volume_ctrl_forbidden
= 1;
7027 pr_notice("Console audio control in monitor mode, "
7028 "changes are not allowed\n");
7029 pr_notice("Use the volume_control=1 module parameter "
7030 "to enable volume control\n");
7035 rc
= volume_get_status(&s
);
7039 new_level
= s
& TP_EC_AUDIO_LVL_MSK
;
7040 new_mute
= s
& TP_EC_AUDIO_MUTESW_MSK
;
7042 while ((cmd
= next_cmd(&buf
))) {
7043 if (!tp_features
.mixer_no_level_control
) {
7044 if (strlencmp(cmd
, "up") == 0) {
7047 else if (new_level
< TP_EC_VOLUME_MAX
)
7050 } else if (strlencmp(cmd
, "down") == 0) {
7053 else if (new_level
> 0)
7056 } else if (sscanf(cmd
, "level %u", &l
) == 1 &&
7057 l
>= 0 && l
<= TP_EC_VOLUME_MAX
) {
7062 if (strlencmp(cmd
, "mute") == 0)
7063 new_mute
= TP_EC_AUDIO_MUTESW_MSK
;
7064 else if (strlencmp(cmd
, "unmute") == 0)
7070 if (tp_features
.mixer_no_level_control
) {
7071 tpacpi_disclose_usertask("procfs volume", "%smute\n",
7072 new_mute
? "" : "un");
7073 rc
= volume_set_mute(!!new_mute
);
7075 tpacpi_disclose_usertask("procfs volume",
7076 "%smute and set level to %d\n",
7077 new_mute
? "" : "un", new_level
);
7078 rc
= volume_set_status(new_mute
| new_level
);
7080 volume_alsa_notify_change();
7082 return (rc
== -EINTR
) ? -ERESTARTSYS
: rc
;
7085 static struct ibm_struct volume_driver_data
= {
7087 .read
= volume_read
,
7088 .write
= volume_write
,
7089 .exit
= volume_exit
,
7090 .suspend
= volume_suspend
,
7091 .resume
= volume_resume
,
7092 .shutdown
= volume_shutdown
,
7095 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7097 #define alsa_card NULL
7099 static void inline volume_alsa_notify_change(void)
7103 static int __init
volume_init(struct ibm_init_struct
*iibm
)
7105 pr_info("volume: disabled as there is no ALSA support in this kernel\n");
7110 static struct ibm_struct volume_driver_data
= {
7114 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7116 /*************************************************************************
7123 * TPACPI_FAN_RD_ACPI_GFAN:
7124 * ACPI GFAN method: returns fan level
7126 * see TPACPI_FAN_WR_ACPI_SFAN
7127 * EC 0x2f (HFSP) not available if GFAN exists
7129 * TPACPI_FAN_WR_ACPI_SFAN:
7130 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
7132 * EC 0x2f (HFSP) might be available *for reading*, but do not use
7135 * TPACPI_FAN_WR_TPEC:
7136 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
7137 * Supported on almost all ThinkPads
7139 * Fan speed changes of any sort (including those caused by the
7140 * disengaged mode) are usually done slowly by the firmware as the
7141 * maximum amount of fan duty cycle change per second seems to be
7144 * Reading is not available if GFAN exists.
7145 * Writing is not available if SFAN exists.
7148 * 7 automatic mode engaged;
7149 * (default operation mode of the ThinkPad)
7150 * fan level is ignored in this mode.
7151 * 6 full speed mode (takes precedence over bit 7);
7152 * not available on all thinkpads. May disable
7153 * the tachometer while the fan controller ramps up
7154 * the speed (which can take up to a few *minutes*).
7155 * Speeds up fan to 100% duty-cycle, which is far above
7156 * the standard RPM levels. It is not impossible that
7157 * it could cause hardware damage.
7158 * 5-3 unused in some models. Extra bits for fan level
7159 * in others, but still useless as all values above
7160 * 7 map to the same speed as level 7 in these models.
7161 * 2-0 fan level (0..7 usually)
7163 * 0x07 = max (set when temperatures critical)
7164 * Some ThinkPads may have other levels, see
7165 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
7167 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
7168 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
7169 * does so, its initial value is meaningless (0x07).
7171 * For firmware bugs, refer to:
7172 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7176 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
7177 * Main fan tachometer reading (in RPM)
7179 * This register is present on all ThinkPads with a new-style EC, and
7180 * it is known not to be present on the A21m/e, and T22, as there is
7181 * something else in offset 0x84 according to the ACPI DSDT. Other
7182 * ThinkPads from this same time period (and earlier) probably lack the
7183 * tachometer as well.
7185 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
7186 * was never fixed by IBM to report the EC firmware version string
7187 * probably support the tachometer (like the early X models), so
7188 * detecting it is quite hard. We need more data to know for sure.
7190 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
7193 * FIRMWARE BUG: may go stale while the EC is switching to full speed
7196 * For firmware bugs, refer to:
7197 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7201 * ThinkPad EC register 0x31 bit 0 (only on select models)
7203 * When bit 0 of EC register 0x31 is zero, the tachometer registers
7204 * show the speed of the main fan. When bit 0 of EC register 0x31
7205 * is one, the tachometer registers show the speed of the auxiliary
7208 * Fan control seems to affect both fans, regardless of the state
7211 * So far, only the firmware for the X60/X61 non-tablet versions
7212 * seem to support this (firmware TP-7M).
7214 * TPACPI_FAN_WR_ACPI_FANS:
7215 * ThinkPad X31, X40, X41. Not available in the X60.
7217 * FANS ACPI handle: takes three arguments: low speed, medium speed,
7218 * high speed. ACPI DSDT seems to map these three speeds to levels
7219 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
7220 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
7222 * The speeds are stored on handles
7223 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
7225 * There are three default speed sets, accessible as handles:
7226 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
7228 * ACPI DSDT switches which set is in use depending on various
7231 * TPACPI_FAN_WR_TPEC is also available and should be used to
7232 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
7233 * but the ACPI tables just mention level 7.
7236 enum { /* Fan control constants */
7237 fan_status_offset
= 0x2f, /* EC register 0x2f */
7238 fan_rpm_offset
= 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
7239 * 0x84 must be read before 0x85 */
7240 fan_select_offset
= 0x31, /* EC register 0x31 (Firmware 7M)
7241 bit 0 selects which fan is active */
7243 TP_EC_FAN_FULLSPEED
= 0x40, /* EC fan mode: full speed */
7244 TP_EC_FAN_AUTO
= 0x80, /* EC fan mode: auto fan control */
7246 TPACPI_FAN_LAST_LEVEL
= 0x100, /* Use cached last-seen fan level */
7249 enum fan_status_access_mode
{
7250 TPACPI_FAN_NONE
= 0, /* No fan status or control */
7251 TPACPI_FAN_RD_ACPI_GFAN
, /* Use ACPI GFAN */
7252 TPACPI_FAN_RD_TPEC
, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
7255 enum fan_control_access_mode
{
7256 TPACPI_FAN_WR_NONE
= 0, /* No fan control */
7257 TPACPI_FAN_WR_ACPI_SFAN
, /* Use ACPI SFAN */
7258 TPACPI_FAN_WR_TPEC
, /* Use ACPI EC reg 0x2f */
7259 TPACPI_FAN_WR_ACPI_FANS
, /* Use ACPI FANS and EC reg 0x2f */
7262 enum fan_control_commands
{
7263 TPACPI_FAN_CMD_SPEED
= 0x0001, /* speed command */
7264 TPACPI_FAN_CMD_LEVEL
= 0x0002, /* level command */
7265 TPACPI_FAN_CMD_ENABLE
= 0x0004, /* enable/disable cmd,
7266 * and also watchdog cmd */
7269 static bool fan_control_allowed
;
7271 static enum fan_status_access_mode fan_status_access_mode
;
7272 static enum fan_control_access_mode fan_control_access_mode
;
7273 static enum fan_control_commands fan_control_commands
;
7275 static u8 fan_control_initial_status
;
7276 static u8 fan_control_desired_level
;
7277 static u8 fan_control_resume_level
;
7278 static int fan_watchdog_maxinterval
;
7280 static struct mutex fan_mutex
;
7282 static void fan_watchdog_fire(struct work_struct
*ignored
);
7283 static DECLARE_DELAYED_WORK(fan_watchdog_task
, fan_watchdog_fire
);
7285 TPACPI_HANDLE(fans
, ec
, "FANS"); /* X31, X40, X41 */
7286 TPACPI_HANDLE(gfan
, ec
, "GFAN", /* 570 */
7287 "\\FSPD", /* 600e/x, 770e, 770x */
7289 TPACPI_HANDLE(sfan
, ec
, "SFAN", /* 570 */
7290 "JFNS", /* 770x-JL */
7294 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
7295 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
7296 * be in auto mode (0x80).
7298 * This is corrected by any write to HFSP either by the driver, or
7301 * We assume 0x07 really means auto mode while this quirk is active,
7302 * as this is far more likely than the ThinkPad being in level 7,
7303 * which is only used by the firmware during thermal emergencies.
7305 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
7306 * TP-70 (T43, R52), which are known to be buggy.
7309 static void fan_quirk1_setup(void)
7311 if (fan_control_initial_status
== 0x07) {
7312 pr_notice("fan_init: initial fan status is unknown, "
7313 "assuming it is in auto mode\n");
7314 tp_features
.fan_ctrl_status_undef
= 1;
7318 static void fan_quirk1_handle(u8
*fan_status
)
7320 if (unlikely(tp_features
.fan_ctrl_status_undef
)) {
7321 if (*fan_status
!= fan_control_initial_status
) {
7322 /* something changed the HFSP regisnter since
7323 * driver init time, so it is not undefined
7325 tp_features
.fan_ctrl_status_undef
= 0;
7327 /* Return most likely status. In fact, it
7328 * might be the only possible status */
7329 *fan_status
= TP_EC_FAN_AUTO
;
7334 /* Select main fan on X60/X61, NOOP on others */
7335 static bool fan_select_fan1(void)
7337 if (tp_features
.second_fan
) {
7340 if (ec_read(fan_select_offset
, &val
) < 0)
7343 if (ec_write(fan_select_offset
, val
) < 0)
7349 /* Select secondary fan on X60/X61 */
7350 static bool fan_select_fan2(void)
7354 if (!tp_features
.second_fan
)
7357 if (ec_read(fan_select_offset
, &val
) < 0)
7360 if (ec_write(fan_select_offset
, val
) < 0)
7367 * Call with fan_mutex held
7369 static void fan_update_desired_level(u8 status
)
7372 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
7374 fan_control_desired_level
= 7;
7376 fan_control_desired_level
= status
;
7380 static int fan_get_status(u8
*status
)
7385 * Add TPACPI_FAN_RD_ACPI_FANS ? */
7387 switch (fan_status_access_mode
) {
7388 case TPACPI_FAN_RD_ACPI_GFAN
: {
7389 /* 570, 600e/x, 770e, 770x */
7392 if (unlikely(!acpi_evalf(gfan_handle
, &res
, NULL
, "d")))
7396 *status
= res
& 0x07;
7400 case TPACPI_FAN_RD_TPEC
:
7401 /* all except 570, 600e/x, 770e, 770x */
7402 if (unlikely(!acpi_ec_read(fan_status_offset
, &s
)))
7405 if (likely(status
)) {
7407 fan_quirk1_handle(status
);
7419 static int fan_get_status_safe(u8
*status
)
7424 if (mutex_lock_killable(&fan_mutex
))
7425 return -ERESTARTSYS
;
7426 rc
= fan_get_status(&s
);
7428 fan_update_desired_level(s
);
7429 mutex_unlock(&fan_mutex
);
7437 static int fan_get_speed(unsigned int *speed
)
7441 switch (fan_status_access_mode
) {
7442 case TPACPI_FAN_RD_TPEC
:
7443 /* all except 570, 600e/x, 770e, 770x */
7444 if (unlikely(!fan_select_fan1()))
7446 if (unlikely(!acpi_ec_read(fan_rpm_offset
, &lo
) ||
7447 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
)))
7451 *speed
= (hi
<< 8) | lo
;
7462 static int fan2_get_speed(unsigned int *speed
)
7467 switch (fan_status_access_mode
) {
7468 case TPACPI_FAN_RD_TPEC
:
7469 /* all except 570, 600e/x, 770e, 770x */
7470 if (unlikely(!fan_select_fan2()))
7472 rc
= !acpi_ec_read(fan_rpm_offset
, &lo
) ||
7473 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
);
7474 fan_select_fan1(); /* play it safe */
7479 *speed
= (hi
<< 8) | lo
;
7490 static int fan_set_level(int level
)
7492 if (!fan_control_allowed
)
7495 switch (fan_control_access_mode
) {
7496 case TPACPI_FAN_WR_ACPI_SFAN
:
7497 if (level
>= 0 && level
<= 7) {
7498 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", level
))
7504 case TPACPI_FAN_WR_ACPI_FANS
:
7505 case TPACPI_FAN_WR_TPEC
:
7506 if (!(level
& TP_EC_FAN_AUTO
) &&
7507 !(level
& TP_EC_FAN_FULLSPEED
) &&
7508 ((level
< 0) || (level
> 7)))
7511 /* safety net should the EC not support AUTO
7512 * or FULLSPEED mode bits and just ignore them */
7513 if (level
& TP_EC_FAN_FULLSPEED
)
7514 level
|= 7; /* safety min speed 7 */
7515 else if (level
& TP_EC_FAN_AUTO
)
7516 level
|= 4; /* safety min speed 4 */
7518 if (!acpi_ec_write(fan_status_offset
, level
))
7521 tp_features
.fan_ctrl_status_undef
= 0;
7528 vdbg_printk(TPACPI_DBG_FAN
,
7529 "fan control: set fan control register to 0x%02x\n", level
);
7533 static int fan_set_level_safe(int level
)
7537 if (!fan_control_allowed
)
7540 if (mutex_lock_killable(&fan_mutex
))
7541 return -ERESTARTSYS
;
7543 if (level
== TPACPI_FAN_LAST_LEVEL
)
7544 level
= fan_control_desired_level
;
7546 rc
= fan_set_level(level
);
7548 fan_update_desired_level(level
);
7550 mutex_unlock(&fan_mutex
);
7554 static int fan_set_enable(void)
7559 if (!fan_control_allowed
)
7562 if (mutex_lock_killable(&fan_mutex
))
7563 return -ERESTARTSYS
;
7565 switch (fan_control_access_mode
) {
7566 case TPACPI_FAN_WR_ACPI_FANS
:
7567 case TPACPI_FAN_WR_TPEC
:
7568 rc
= fan_get_status(&s
);
7572 /* Don't go out of emergency fan mode */
7575 s
|= TP_EC_FAN_AUTO
| 4; /* min fan speed 4 */
7578 if (!acpi_ec_write(fan_status_offset
, s
))
7581 tp_features
.fan_ctrl_status_undef
= 0;
7586 case TPACPI_FAN_WR_ACPI_SFAN
:
7587 rc
= fan_get_status(&s
);
7593 /* Set fan to at least level 4 */
7596 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", s
))
7606 mutex_unlock(&fan_mutex
);
7609 vdbg_printk(TPACPI_DBG_FAN
,
7610 "fan control: set fan control register to 0x%02x\n",
7615 static int fan_set_disable(void)
7619 if (!fan_control_allowed
)
7622 if (mutex_lock_killable(&fan_mutex
))
7623 return -ERESTARTSYS
;
7626 switch (fan_control_access_mode
) {
7627 case TPACPI_FAN_WR_ACPI_FANS
:
7628 case TPACPI_FAN_WR_TPEC
:
7629 if (!acpi_ec_write(fan_status_offset
, 0x00))
7632 fan_control_desired_level
= 0;
7633 tp_features
.fan_ctrl_status_undef
= 0;
7637 case TPACPI_FAN_WR_ACPI_SFAN
:
7638 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", 0x00))
7641 fan_control_desired_level
= 0;
7649 vdbg_printk(TPACPI_DBG_FAN
,
7650 "fan control: set fan control register to 0\n");
7652 mutex_unlock(&fan_mutex
);
7656 static int fan_set_speed(int speed
)
7660 if (!fan_control_allowed
)
7663 if (mutex_lock_killable(&fan_mutex
))
7664 return -ERESTARTSYS
;
7667 switch (fan_control_access_mode
) {
7668 case TPACPI_FAN_WR_ACPI_FANS
:
7669 if (speed
>= 0 && speed
<= 65535) {
7670 if (!acpi_evalf(fans_handle
, NULL
, NULL
, "vddd",
7671 speed
, speed
, speed
))
7681 mutex_unlock(&fan_mutex
);
7685 static void fan_watchdog_reset(void)
7687 if (fan_control_access_mode
== TPACPI_FAN_WR_NONE
)
7690 if (fan_watchdog_maxinterval
> 0 &&
7691 tpacpi_lifecycle
!= TPACPI_LIFE_EXITING
)
7692 mod_delayed_work(tpacpi_wq
, &fan_watchdog_task
,
7693 msecs_to_jiffies(fan_watchdog_maxinterval
* 1000));
7695 cancel_delayed_work(&fan_watchdog_task
);
7698 static void fan_watchdog_fire(struct work_struct
*ignored
)
7702 if (tpacpi_lifecycle
!= TPACPI_LIFE_RUNNING
)
7705 pr_notice("fan watchdog: enabling fan\n");
7706 rc
= fan_set_enable();
7708 pr_err("fan watchdog: error %d while enabling fan, "
7709 "will try again later...\n", -rc
);
7710 /* reschedule for later */
7711 fan_watchdog_reset();
7716 * SYSFS fan layout: hwmon compatible (device)
7719 * 0: "disengaged" mode
7721 * 2: native EC "auto" mode (recommended, hardware default)
7723 * pwm*: set speed in manual mode, ignored otherwise.
7724 * 0 is level 0; 255 is level 7. Intermediate points done with linear
7727 * fan*_input: tachometer reading, RPM
7730 * SYSFS fan layout: extensions
7732 * fan_watchdog (driver):
7733 * fan watchdog interval in seconds, 0 disables (default), max 120
7736 /* sysfs fan pwm1_enable ----------------------------------------------- */
7737 static ssize_t
fan_pwm1_enable_show(struct device
*dev
,
7738 struct device_attribute
*attr
,
7744 res
= fan_get_status_safe(&status
);
7748 if (status
& TP_EC_FAN_FULLSPEED
) {
7750 } else if (status
& TP_EC_FAN_AUTO
) {
7755 return snprintf(buf
, PAGE_SIZE
, "%d\n", mode
);
7758 static ssize_t
fan_pwm1_enable_store(struct device
*dev
,
7759 struct device_attribute
*attr
,
7760 const char *buf
, size_t count
)
7765 if (parse_strtoul(buf
, 2, &t
))
7768 tpacpi_disclose_usertask("hwmon pwm1_enable",
7769 "set fan mode to %lu\n", t
);
7773 level
= TP_EC_FAN_FULLSPEED
;
7776 level
= TPACPI_FAN_LAST_LEVEL
;
7779 level
= TP_EC_FAN_AUTO
;
7782 /* reserved for software-controlled auto mode */
7788 res
= fan_set_level_safe(level
);
7794 fan_watchdog_reset();
7799 static struct device_attribute dev_attr_fan_pwm1_enable
=
7800 __ATTR(pwm1_enable
, S_IWUSR
| S_IRUGO
,
7801 fan_pwm1_enable_show
, fan_pwm1_enable_store
);
7803 /* sysfs fan pwm1 ------------------------------------------------------ */
7804 static ssize_t
fan_pwm1_show(struct device
*dev
,
7805 struct device_attribute
*attr
,
7811 res
= fan_get_status_safe(&status
);
7816 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) != 0)
7817 status
= fan_control_desired_level
;
7822 return snprintf(buf
, PAGE_SIZE
, "%u\n", (status
* 255) / 7);
7825 static ssize_t
fan_pwm1_store(struct device
*dev
,
7826 struct device_attribute
*attr
,
7827 const char *buf
, size_t count
)
7831 u8 status
, newlevel
;
7833 if (parse_strtoul(buf
, 255, &s
))
7836 tpacpi_disclose_usertask("hwmon pwm1",
7837 "set fan speed to %lu\n", s
);
7839 /* scale down from 0-255 to 0-7 */
7840 newlevel
= (s
>> 5) & 0x07;
7842 if (mutex_lock_killable(&fan_mutex
))
7843 return -ERESTARTSYS
;
7845 rc
= fan_get_status(&status
);
7846 if (!rc
&& (status
&
7847 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
7848 rc
= fan_set_level(newlevel
);
7852 fan_update_desired_level(newlevel
);
7853 fan_watchdog_reset();
7857 mutex_unlock(&fan_mutex
);
7858 return (rc
)? rc
: count
;
7861 static struct device_attribute dev_attr_fan_pwm1
=
7862 __ATTR(pwm1
, S_IWUSR
| S_IRUGO
,
7863 fan_pwm1_show
, fan_pwm1_store
);
7865 /* sysfs fan fan1_input ------------------------------------------------ */
7866 static ssize_t
fan_fan1_input_show(struct device
*dev
,
7867 struct device_attribute
*attr
,
7873 res
= fan_get_speed(&speed
);
7877 return snprintf(buf
, PAGE_SIZE
, "%u\n", speed
);
7880 static struct device_attribute dev_attr_fan_fan1_input
=
7881 __ATTR(fan1_input
, S_IRUGO
,
7882 fan_fan1_input_show
, NULL
);
7884 /* sysfs fan fan2_input ------------------------------------------------ */
7885 static ssize_t
fan_fan2_input_show(struct device
*dev
,
7886 struct device_attribute
*attr
,
7892 res
= fan2_get_speed(&speed
);
7896 return snprintf(buf
, PAGE_SIZE
, "%u\n", speed
);
7899 static struct device_attribute dev_attr_fan_fan2_input
=
7900 __ATTR(fan2_input
, S_IRUGO
,
7901 fan_fan2_input_show
, NULL
);
7903 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
7904 static ssize_t
fan_fan_watchdog_show(struct device_driver
*drv
,
7907 return snprintf(buf
, PAGE_SIZE
, "%u\n", fan_watchdog_maxinterval
);
7910 static ssize_t
fan_fan_watchdog_store(struct device_driver
*drv
,
7911 const char *buf
, size_t count
)
7915 if (parse_strtoul(buf
, 120, &t
))
7918 if (!fan_control_allowed
)
7921 fan_watchdog_maxinterval
= t
;
7922 fan_watchdog_reset();
7924 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t
);
7929 static DRIVER_ATTR(fan_watchdog
, S_IWUSR
| S_IRUGO
,
7930 fan_fan_watchdog_show
, fan_fan_watchdog_store
);
7932 /* --------------------------------------------------------------------- */
7933 static struct attribute
*fan_attributes
[] = {
7934 &dev_attr_fan_pwm1_enable
.attr
, &dev_attr_fan_pwm1
.attr
,
7935 &dev_attr_fan_fan1_input
.attr
,
7936 NULL
, /* for fan2_input */
7940 static const struct attribute_group fan_attr_group
= {
7941 .attrs
= fan_attributes
,
7944 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
7945 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7947 #define TPACPI_FAN_QI(__id1, __id2, __quirks) \
7948 { .vendor = PCI_VENDOR_ID_IBM, \
7949 .bios = TPACPI_MATCH_ANY, \
7950 .ec = TPID(__id1, __id2), \
7951 .quirks = __quirks }
7953 #define TPACPI_FAN_QL(__id1, __id2, __quirks) \
7954 { .vendor = PCI_VENDOR_ID_LENOVO, \
7955 .bios = TPACPI_MATCH_ANY, \
7956 .ec = TPID(__id1, __id2), \
7957 .quirks = __quirks }
7959 static const struct tpacpi_quirk fan_quirk_table
[] __initconst
= {
7960 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1
),
7961 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1
),
7962 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1
),
7963 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1
),
7964 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN
),
7967 #undef TPACPI_FAN_QL
7968 #undef TPACPI_FAN_QI
7970 static int __init
fan_init(struct ibm_init_struct
*iibm
)
7973 unsigned long quirks
;
7975 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
7976 "initializing fan subdriver\n");
7978 mutex_init(&fan_mutex
);
7979 fan_status_access_mode
= TPACPI_FAN_NONE
;
7980 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
7981 fan_control_commands
= 0;
7982 fan_watchdog_maxinterval
= 0;
7983 tp_features
.fan_ctrl_status_undef
= 0;
7984 tp_features
.second_fan
= 0;
7985 fan_control_desired_level
= 7;
7987 if (tpacpi_is_ibm()) {
7988 TPACPI_ACPIHANDLE_INIT(fans
);
7989 TPACPI_ACPIHANDLE_INIT(gfan
);
7990 TPACPI_ACPIHANDLE_INIT(sfan
);
7993 quirks
= tpacpi_check_quirks(fan_quirk_table
,
7994 ARRAY_SIZE(fan_quirk_table
));
7997 /* 570, 600e/x, 770e, 770x */
7998 fan_status_access_mode
= TPACPI_FAN_RD_ACPI_GFAN
;
8000 /* all other ThinkPads: note that even old-style
8001 * ThinkPad ECs supports the fan control register */
8002 if (likely(acpi_ec_read(fan_status_offset
,
8003 &fan_control_initial_status
))) {
8004 fan_status_access_mode
= TPACPI_FAN_RD_TPEC
;
8005 if (quirks
& TPACPI_FAN_Q1
)
8007 if (quirks
& TPACPI_FAN_2FAN
) {
8008 tp_features
.second_fan
= 1;
8009 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
8010 "secondary fan support enabled\n");
8013 pr_err("ThinkPad ACPI EC access misbehaving, "
8014 "fan status and control unavailable\n");
8021 fan_control_access_mode
= TPACPI_FAN_WR_ACPI_SFAN
;
8022 fan_control_commands
|=
8023 TPACPI_FAN_CMD_LEVEL
| TPACPI_FAN_CMD_ENABLE
;
8026 /* gfan without sfan means no fan control */
8027 /* all other models implement TP EC 0x2f control */
8031 fan_control_access_mode
=
8032 TPACPI_FAN_WR_ACPI_FANS
;
8033 fan_control_commands
|=
8034 TPACPI_FAN_CMD_SPEED
|
8035 TPACPI_FAN_CMD_LEVEL
|
8036 TPACPI_FAN_CMD_ENABLE
;
8038 fan_control_access_mode
= TPACPI_FAN_WR_TPEC
;
8039 fan_control_commands
|=
8040 TPACPI_FAN_CMD_LEVEL
|
8041 TPACPI_FAN_CMD_ENABLE
;
8046 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
8047 "fan is %s, modes %d, %d\n",
8048 str_supported(fan_status_access_mode
!= TPACPI_FAN_NONE
||
8049 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
),
8050 fan_status_access_mode
, fan_control_access_mode
);
8052 /* fan control master switch */
8053 if (!fan_control_allowed
) {
8054 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
8055 fan_control_commands
= 0;
8056 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
8057 "fan control features disabled by parameter\n");
8060 /* update fan_control_desired_level */
8061 if (fan_status_access_mode
!= TPACPI_FAN_NONE
)
8062 fan_get_status_safe(NULL
);
8064 if (fan_status_access_mode
!= TPACPI_FAN_NONE
||
8065 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
) {
8066 if (tp_features
.second_fan
) {
8067 /* attach second fan tachometer */
8068 fan_attributes
[ARRAY_SIZE(fan_attributes
)-2] =
8069 &dev_attr_fan_fan2_input
.attr
;
8071 rc
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
8076 rc
= driver_create_file(&tpacpi_hwmon_pdriver
.driver
,
8077 &driver_attr_fan_watchdog
);
8079 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
8088 static void fan_exit(void)
8090 vdbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_FAN
,
8091 "cancelling any pending fan watchdog tasks\n");
8093 /* FIXME: can we really do this unconditionally? */
8094 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
, &fan_attr_group
);
8095 driver_remove_file(&tpacpi_hwmon_pdriver
.driver
,
8096 &driver_attr_fan_watchdog
);
8098 cancel_delayed_work(&fan_watchdog_task
);
8099 flush_workqueue(tpacpi_wq
);
8102 static void fan_suspend(void)
8106 if (!fan_control_allowed
)
8109 /* Store fan status in cache */
8110 fan_control_resume_level
= 0;
8111 rc
= fan_get_status_safe(&fan_control_resume_level
);
8113 pr_notice("failed to read fan level for later "
8114 "restore during resume: %d\n", rc
);
8116 /* if it is undefined, don't attempt to restore it.
8118 if (tp_features
.fan_ctrl_status_undef
)
8119 fan_control_resume_level
= 0;
8122 static void fan_resume(void)
8124 u8 current_level
= 7;
8125 bool do_set
= false;
8128 /* DSDT *always* updates status on resume */
8129 tp_features
.fan_ctrl_status_undef
= 0;
8131 if (!fan_control_allowed
||
8132 !fan_control_resume_level
||
8133 (fan_get_status_safe(¤t_level
) < 0))
8136 switch (fan_control_access_mode
) {
8137 case TPACPI_FAN_WR_ACPI_SFAN
:
8138 /* never decrease fan level */
8139 do_set
= (fan_control_resume_level
> current_level
);
8141 case TPACPI_FAN_WR_ACPI_FANS
:
8142 case TPACPI_FAN_WR_TPEC
:
8143 /* never decrease fan level, scale is:
8144 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
8146 * We expect the firmware to set either 7 or AUTO, but we
8147 * handle FULLSPEED out of paranoia.
8149 * So, we can safely only restore FULLSPEED or 7, anything
8150 * else could slow the fan. Restoring AUTO is useless, at
8151 * best that's exactly what the DSDT already set (it is the
8154 * Always keep in mind that the DSDT *will* have set the
8155 * fans to what the vendor supposes is the best level. We
8156 * muck with it only to speed the fan up.
8158 if (fan_control_resume_level
!= 7 &&
8159 !(fan_control_resume_level
& TP_EC_FAN_FULLSPEED
))
8162 do_set
= !(current_level
& TP_EC_FAN_FULLSPEED
) &&
8163 (current_level
!= fan_control_resume_level
);
8169 pr_notice("restoring fan level to 0x%02x\n",
8170 fan_control_resume_level
);
8171 rc
= fan_set_level_safe(fan_control_resume_level
);
8173 pr_notice("failed to restore fan level: %d\n", rc
);
8177 static int fan_read(struct seq_file
*m
)
8181 unsigned int speed
= 0;
8183 switch (fan_status_access_mode
) {
8184 case TPACPI_FAN_RD_ACPI_GFAN
:
8185 /* 570, 600e/x, 770e, 770x */
8186 rc
= fan_get_status_safe(&status
);
8190 seq_printf(m
, "status:\t\t%s\n"
8192 (status
!= 0) ? "enabled" : "disabled", status
);
8195 case TPACPI_FAN_RD_TPEC
:
8196 /* all except 570, 600e/x, 770e, 770x */
8197 rc
= fan_get_status_safe(&status
);
8201 seq_printf(m
, "status:\t\t%s\n",
8202 (status
!= 0) ? "enabled" : "disabled");
8204 rc
= fan_get_speed(&speed
);
8208 seq_printf(m
, "speed:\t\t%d\n", speed
);
8210 if (status
& TP_EC_FAN_FULLSPEED
)
8211 /* Disengaged mode takes precedence */
8212 seq_printf(m
, "level:\t\tdisengaged\n");
8213 else if (status
& TP_EC_FAN_AUTO
)
8214 seq_printf(m
, "level:\t\tauto\n");
8216 seq_printf(m
, "level:\t\t%d\n", status
);
8219 case TPACPI_FAN_NONE
:
8221 seq_printf(m
, "status:\t\tnot supported\n");
8224 if (fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) {
8225 seq_printf(m
, "commands:\tlevel <level>");
8227 switch (fan_control_access_mode
) {
8228 case TPACPI_FAN_WR_ACPI_SFAN
:
8229 seq_printf(m
, " (<level> is 0-7)\n");
8233 seq_printf(m
, " (<level> is 0-7, "
8234 "auto, disengaged, full-speed)\n");
8239 if (fan_control_commands
& TPACPI_FAN_CMD_ENABLE
)
8240 seq_printf(m
, "commands:\tenable, disable\n"
8241 "commands:\twatchdog <timeout> (<timeout> "
8242 "is 0 (off), 1-120 (seconds))\n");
8244 if (fan_control_commands
& TPACPI_FAN_CMD_SPEED
)
8245 seq_printf(m
, "commands:\tspeed <speed>"
8246 " (<speed> is 0-65535)\n");
8251 static int fan_write_cmd_level(const char *cmd
, int *rc
)
8255 if (strlencmp(cmd
, "level auto") == 0)
8256 level
= TP_EC_FAN_AUTO
;
8257 else if ((strlencmp(cmd
, "level disengaged") == 0) |
8258 (strlencmp(cmd
, "level full-speed") == 0))
8259 level
= TP_EC_FAN_FULLSPEED
;
8260 else if (sscanf(cmd
, "level %d", &level
) != 1)
8263 *rc
= fan_set_level_safe(level
);
8265 pr_err("level command accepted for unsupported access mode %d\n",
8266 fan_control_access_mode
);
8268 tpacpi_disclose_usertask("procfs fan",
8269 "set level to %d\n", level
);
8274 static int fan_write_cmd_enable(const char *cmd
, int *rc
)
8276 if (strlencmp(cmd
, "enable") != 0)
8279 *rc
= fan_set_enable();
8281 pr_err("enable command accepted for unsupported access mode %d\n",
8282 fan_control_access_mode
);
8284 tpacpi_disclose_usertask("procfs fan", "enable\n");
8289 static int fan_write_cmd_disable(const char *cmd
, int *rc
)
8291 if (strlencmp(cmd
, "disable") != 0)
8294 *rc
= fan_set_disable();
8296 pr_err("disable command accepted for unsupported access mode %d\n",
8297 fan_control_access_mode
);
8299 tpacpi_disclose_usertask("procfs fan", "disable\n");
8304 static int fan_write_cmd_speed(const char *cmd
, int *rc
)
8309 * Support speed <low> <medium> <high> ? */
8311 if (sscanf(cmd
, "speed %d", &speed
) != 1)
8314 *rc
= fan_set_speed(speed
);
8316 pr_err("speed command accepted for unsupported access mode %d\n",
8317 fan_control_access_mode
);
8319 tpacpi_disclose_usertask("procfs fan",
8320 "set speed to %d\n", speed
);
8325 static int fan_write_cmd_watchdog(const char *cmd
, int *rc
)
8329 if (sscanf(cmd
, "watchdog %d", &interval
) != 1)
8332 if (interval
< 0 || interval
> 120)
8335 fan_watchdog_maxinterval
= interval
;
8336 tpacpi_disclose_usertask("procfs fan",
8337 "set watchdog timer to %d\n",
8344 static int fan_write(char *buf
)
8349 while (!rc
&& (cmd
= next_cmd(&buf
))) {
8350 if (!((fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) &&
8351 fan_write_cmd_level(cmd
, &rc
)) &&
8352 !((fan_control_commands
& TPACPI_FAN_CMD_ENABLE
) &&
8353 (fan_write_cmd_enable(cmd
, &rc
) ||
8354 fan_write_cmd_disable(cmd
, &rc
) ||
8355 fan_write_cmd_watchdog(cmd
, &rc
))) &&
8356 !((fan_control_commands
& TPACPI_FAN_CMD_SPEED
) &&
8357 fan_write_cmd_speed(cmd
, &rc
))
8361 fan_watchdog_reset();
8367 static struct ibm_struct fan_driver_data
= {
8372 .suspend
= fan_suspend
,
8373 .resume
= fan_resume
,
8376 /*************************************************************************
8377 * Mute LED subdriver
8381 struct tp_led_table
{
8388 static struct tp_led_table led_tables
[] = {
8389 [TPACPI_LED_MUTE
] = {
8394 [TPACPI_LED_MICMUTE
] = {
8401 static int mute_led_on_off(struct tp_led_table
*t
, bool state
)
8406 if (!ACPI_SUCCESS(acpi_get_handle(hkey_handle
, t
->name
, &temp
))) {
8407 pr_warn("Thinkpad ACPI has no %s interface.\n", t
->name
);
8411 if (!acpi_evalf(hkey_handle
, &output
, t
->name
, "dd",
8412 state
? t
->on_value
: t
->off_value
))
8419 int tpacpi_led_set(int whichled
, bool on
)
8421 struct tp_led_table
*t
;
8423 if (whichled
< 0 || whichled
>= TPACPI_LED_MAX
)
8426 t
= &led_tables
[whichled
];
8427 if (t
->state
< 0 || t
->state
== on
)
8429 return mute_led_on_off(t
, on
);
8431 EXPORT_SYMBOL_GPL(tpacpi_led_set
);
8433 static int mute_led_init(struct ibm_init_struct
*iibm
)
8438 for (i
= 0; i
< TPACPI_LED_MAX
; i
++) {
8439 struct tp_led_table
*t
= &led_tables
[i
];
8440 if (ACPI_SUCCESS(acpi_get_handle(hkey_handle
, t
->name
, &temp
)))
8441 mute_led_on_off(t
, false);
8448 static void mute_led_exit(void)
8452 for (i
= 0; i
< TPACPI_LED_MAX
; i
++)
8453 tpacpi_led_set(i
, false);
8456 static struct ibm_struct mute_led_driver_data
= {
8458 .exit
= mute_led_exit
,
8461 /****************************************************************************
8462 ****************************************************************************
8466 ****************************************************************************
8467 ****************************************************************************/
8470 * HKEY event callout for other subdrivers go here
8471 * (yes, it is ugly, but it is quick, safe, and gets the job done
8473 static void tpacpi_driver_event(const unsigned int hkey_event
)
8475 if (ibm_backlight_device
) {
8476 switch (hkey_event
) {
8477 case TP_HKEY_EV_BRGHT_UP
:
8478 case TP_HKEY_EV_BRGHT_DOWN
:
8479 tpacpi_brightness_notify_change();
8483 switch (hkey_event
) {
8484 case TP_HKEY_EV_VOL_UP
:
8485 case TP_HKEY_EV_VOL_DOWN
:
8486 case TP_HKEY_EV_VOL_MUTE
:
8487 volume_alsa_notify_change();
8492 static void hotkey_driver_event(const unsigned int scancode
)
8494 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE
+ scancode
);
8497 /* sysfs name ---------------------------------------------------------- */
8498 static ssize_t
thinkpad_acpi_pdev_name_show(struct device
*dev
,
8499 struct device_attribute
*attr
,
8502 return snprintf(buf
, PAGE_SIZE
, "%s\n", TPACPI_NAME
);
8505 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name
=
8506 __ATTR(name
, S_IRUGO
, thinkpad_acpi_pdev_name_show
, NULL
);
8508 /* --------------------------------------------------------------------- */
8511 static struct proc_dir_entry
*proc_dir
;
8514 * Module and infrastructure proble, init and exit handling
8517 static bool force_load
;
8519 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
8520 static const char * __init
str_supported(int is_supported
)
8522 static char text_unsupported
[] __initdata
= "not supported";
8524 return (is_supported
)? &text_unsupported
[4] : &text_unsupported
[0];
8526 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
8528 static void ibm_exit(struct ibm_struct
*ibm
)
8530 dbg_printk(TPACPI_DBG_EXIT
, "removing %s\n", ibm
->name
);
8532 list_del_init(&ibm
->all_drivers
);
8534 if (ibm
->flags
.acpi_notify_installed
) {
8535 dbg_printk(TPACPI_DBG_EXIT
,
8536 "%s: acpi_remove_notify_handler\n", ibm
->name
);
8538 acpi_remove_notify_handler(*ibm
->acpi
->handle
,
8540 dispatch_acpi_notify
);
8541 ibm
->flags
.acpi_notify_installed
= 0;
8544 if (ibm
->flags
.proc_created
) {
8545 dbg_printk(TPACPI_DBG_EXIT
,
8546 "%s: remove_proc_entry\n", ibm
->name
);
8547 remove_proc_entry(ibm
->name
, proc_dir
);
8548 ibm
->flags
.proc_created
= 0;
8551 if (ibm
->flags
.acpi_driver_registered
) {
8552 dbg_printk(TPACPI_DBG_EXIT
,
8553 "%s: acpi_bus_unregister_driver\n", ibm
->name
);
8555 acpi_bus_unregister_driver(ibm
->acpi
->driver
);
8556 kfree(ibm
->acpi
->driver
);
8557 ibm
->acpi
->driver
= NULL
;
8558 ibm
->flags
.acpi_driver_registered
= 0;
8561 if (ibm
->flags
.init_called
&& ibm
->exit
) {
8563 ibm
->flags
.init_called
= 0;
8566 dbg_printk(TPACPI_DBG_INIT
, "finished removing %s\n", ibm
->name
);
8569 static int __init
ibm_init(struct ibm_init_struct
*iibm
)
8572 struct ibm_struct
*ibm
= iibm
->data
;
8573 struct proc_dir_entry
*entry
;
8575 BUG_ON(ibm
== NULL
);
8577 INIT_LIST_HEAD(&ibm
->all_drivers
);
8579 if (ibm
->flags
.experimental
&& !experimental
)
8582 dbg_printk(TPACPI_DBG_INIT
,
8583 "probing for %s\n", ibm
->name
);
8586 ret
= iibm
->init(iibm
);
8588 return 0; /* probe failed */
8592 ibm
->flags
.init_called
= 1;
8596 if (ibm
->acpi
->hid
) {
8597 ret
= register_tpacpi_subdriver(ibm
);
8602 if (ibm
->acpi
->notify
) {
8603 ret
= setup_acpi_notify(ibm
);
8604 if (ret
== -ENODEV
) {
8605 pr_notice("disabling subdriver %s\n",
8615 dbg_printk(TPACPI_DBG_INIT
,
8616 "%s installed\n", ibm
->name
);
8619 umode_t mode
= iibm
->base_procfs_mode
;
8625 entry
= proc_create_data(ibm
->name
, mode
, proc_dir
,
8626 &dispatch_proc_fops
, ibm
);
8628 pr_err("unable to create proc entry %s\n", ibm
->name
);
8632 ibm
->flags
.proc_created
= 1;
8635 list_add_tail(&ibm
->all_drivers
, &tpacpi_all_drivers
);
8640 dbg_printk(TPACPI_DBG_INIT
,
8641 "%s: at error exit path with result %d\n",
8645 return (ret
< 0)? ret
: 0;
8650 static bool __pure __init
tpacpi_is_fw_digit(const char c
)
8652 return (c
>= '0' && c
<= '9') || (c
>= 'A' && c
<= 'Z');
8655 /* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
8656 static bool __pure __init
tpacpi_is_valid_fw_id(const char* const s
,
8659 return s
&& strlen(s
) >= 8 &&
8660 tpacpi_is_fw_digit(s
[0]) &&
8661 tpacpi_is_fw_digit(s
[1]) &&
8663 (s
[3] == 'T' || s
[3] == 'N') &&
8664 tpacpi_is_fw_digit(s
[4]) &&
8665 tpacpi_is_fw_digit(s
[5]);
8668 /* returns 0 - probe ok, or < 0 - probe error.
8669 * Probe ok doesn't mean thinkpad found.
8670 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
8671 static int __must_check __init
get_thinkpad_model_data(
8672 struct thinkpad_id_data
*tp
)
8674 const struct dmi_device
*dev
= NULL
;
8675 char ec_fw_string
[18];
8681 memset(tp
, 0, sizeof(*tp
));
8683 if (dmi_name_in_vendors("IBM"))
8684 tp
->vendor
= PCI_VENDOR_ID_IBM
;
8685 else if (dmi_name_in_vendors("LENOVO"))
8686 tp
->vendor
= PCI_VENDOR_ID_LENOVO
;
8690 s
= dmi_get_system_info(DMI_BIOS_VERSION
);
8691 tp
->bios_version_str
= kstrdup(s
, GFP_KERNEL
);
8692 if (s
&& !tp
->bios_version_str
)
8695 /* Really ancient ThinkPad 240X will fail this, which is fine */
8696 if (!(tpacpi_is_valid_fw_id(tp
->bios_version_str
, 'E') ||
8697 tpacpi_is_valid_fw_id(tp
->bios_version_str
, 'C')))
8700 tp
->bios_model
= tp
->bios_version_str
[0]
8701 | (tp
->bios_version_str
[1] << 8);
8702 tp
->bios_release
= (tp
->bios_version_str
[4] << 8)
8703 | tp
->bios_version_str
[5];
8706 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
8707 * X32 or newer, all Z series; Some models must have an
8708 * up-to-date BIOS or they will not be detected.
8710 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
8712 while ((dev
= dmi_find_device(DMI_DEV_TYPE_OEM_STRING
, NULL
, dev
))) {
8713 if (sscanf(dev
->name
,
8714 "IBM ThinkPad Embedded Controller -[%17c",
8715 ec_fw_string
) == 1) {
8716 ec_fw_string
[sizeof(ec_fw_string
) - 1] = 0;
8717 ec_fw_string
[strcspn(ec_fw_string
, " ]")] = 0;
8719 tp
->ec_version_str
= kstrdup(ec_fw_string
, GFP_KERNEL
);
8720 if (!tp
->ec_version_str
)
8723 if (tpacpi_is_valid_fw_id(ec_fw_string
, 'H')) {
8724 tp
->ec_model
= ec_fw_string
[0]
8725 | (ec_fw_string
[1] << 8);
8726 tp
->ec_release
= (ec_fw_string
[4] << 8)
8729 pr_notice("ThinkPad firmware release %s "
8730 "doesn't match the known patterns\n",
8732 pr_notice("please report this to %s\n",
8739 s
= dmi_get_system_info(DMI_PRODUCT_VERSION
);
8740 if (s
&& !(strnicmp(s
, "ThinkPad", 8) && strnicmp(s
, "Lenovo", 6))) {
8741 tp
->model_str
= kstrdup(s
, GFP_KERNEL
);
8745 s
= dmi_get_system_info(DMI_BIOS_VENDOR
);
8746 if (s
&& !(strnicmp(s
, "Lenovo", 6))) {
8747 tp
->model_str
= kstrdup(s
, GFP_KERNEL
);
8753 s
= dmi_get_system_info(DMI_PRODUCT_NAME
);
8754 tp
->nummodel_str
= kstrdup(s
, GFP_KERNEL
);
8755 if (s
&& !tp
->nummodel_str
)
8761 static int __init
probe_for_thinkpad(void)
8768 /* It would be dangerous to run the driver in this case */
8769 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
8773 * Non-ancient models have better DMI tagging, but very old models
8774 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
8776 is_thinkpad
= (thinkpad_id
.model_str
!= NULL
) ||
8777 (thinkpad_id
.ec_model
!= 0) ||
8778 tpacpi_is_fw_known();
8780 /* The EC handler is required */
8781 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID
, &ec_handle
);
8784 pr_err("Not yet supported ThinkPad detected!\n");
8788 if (!is_thinkpad
&& !force_load
)
8794 static void __init
thinkpad_acpi_init_banner(void)
8796 pr_info("%s v%s\n", TPACPI_DESC
, TPACPI_VERSION
);
8797 pr_info("%s\n", TPACPI_URL
);
8799 pr_info("ThinkPad BIOS %s, EC %s\n",
8800 (thinkpad_id
.bios_version_str
) ?
8801 thinkpad_id
.bios_version_str
: "unknown",
8802 (thinkpad_id
.ec_version_str
) ?
8803 thinkpad_id
.ec_version_str
: "unknown");
8805 BUG_ON(!thinkpad_id
.vendor
);
8807 if (thinkpad_id
.model_str
)
8808 pr_info("%s %s, model %s\n",
8809 (thinkpad_id
.vendor
== PCI_VENDOR_ID_IBM
) ?
8810 "IBM" : ((thinkpad_id
.vendor
==
8811 PCI_VENDOR_ID_LENOVO
) ?
8812 "Lenovo" : "Unknown vendor"),
8813 thinkpad_id
.model_str
,
8814 (thinkpad_id
.nummodel_str
) ?
8815 thinkpad_id
.nummodel_str
: "unknown");
8818 /* Module init, exit, parameters */
8820 static struct ibm_init_struct ibms_init
[] __initdata
= {
8822 .data
= &thinkpad_acpi_driver_data
,
8825 .init
= hotkey_init
,
8826 .data
= &hotkey_driver_data
,
8829 .init
= bluetooth_init
,
8830 .data
= &bluetooth_driver_data
,
8834 .data
= &wan_driver_data
,
8838 .data
= &uwb_driver_data
,
8840 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
8843 .base_procfs_mode
= S_IRUSR
,
8844 .data
= &video_driver_data
,
8849 .data
= &light_driver_data
,
8853 .data
= &cmos_driver_data
,
8857 .data
= &led_driver_data
,
8861 .data
= &beep_driver_data
,
8864 .init
= thermal_init
,
8865 .data
= &thermal_driver_data
,
8868 .init
= brightness_init
,
8869 .data
= &brightness_driver_data
,
8872 .init
= volume_init
,
8873 .data
= &volume_driver_data
,
8877 .data
= &fan_driver_data
,
8880 .init
= mute_led_init
,
8881 .data
= &mute_led_driver_data
,
8885 static int __init
set_ibm_param(const char *val
, struct kernel_param
*kp
)
8888 struct ibm_struct
*ibm
;
8890 if (!kp
|| !kp
->name
|| !val
)
8893 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
8894 ibm
= ibms_init
[i
].data
;
8895 WARN_ON(ibm
== NULL
);
8897 if (!ibm
|| !ibm
->name
)
8900 if (strcmp(ibm
->name
, kp
->name
) == 0 && ibm
->write
) {
8901 if (strlen(val
) > sizeof(ibms_init
[i
].param
) - 2)
8903 strcpy(ibms_init
[i
].param
, val
);
8904 strcat(ibms_init
[i
].param
, ",");
8912 module_param(experimental
, int, 0444);
8913 MODULE_PARM_DESC(experimental
,
8914 "Enables experimental features when non-zero");
8916 module_param_named(debug
, dbg_level
, uint
, 0);
8917 MODULE_PARM_DESC(debug
, "Sets debug level bit-mask");
8919 module_param(force_load
, bool, 0444);
8920 MODULE_PARM_DESC(force_load
,
8921 "Attempts to load the driver even on a "
8922 "mis-identified ThinkPad when true");
8924 module_param_named(fan_control
, fan_control_allowed
, bool, 0444);
8925 MODULE_PARM_DESC(fan_control
,
8926 "Enables setting fan parameters features when true");
8928 module_param_named(brightness_mode
, brightness_mode
, uint
, 0444);
8929 MODULE_PARM_DESC(brightness_mode
,
8930 "Selects brightness control strategy: "
8931 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
8933 module_param(brightness_enable
, uint
, 0444);
8934 MODULE_PARM_DESC(brightness_enable
,
8935 "Enables backlight control when 1, disables when 0");
8937 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
8938 module_param_named(volume_mode
, volume_mode
, uint
, 0444);
8939 MODULE_PARM_DESC(volume_mode
,
8940 "Selects volume control strategy: "
8941 "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
8943 module_param_named(volume_capabilities
, volume_capabilities
, uint
, 0444);
8944 MODULE_PARM_DESC(volume_capabilities
,
8945 "Selects the mixer capabilites: "
8946 "0=auto, 1=volume and mute, 2=mute only");
8948 module_param_named(volume_control
, volume_control_allowed
, bool, 0444);
8949 MODULE_PARM_DESC(volume_control
,
8950 "Enables software override for the console audio "
8951 "control when true");
8953 /* ALSA module API parameters */
8954 module_param_named(index
, alsa_index
, int, 0444);
8955 MODULE_PARM_DESC(index
, "ALSA index for the ACPI EC Mixer");
8956 module_param_named(id
, alsa_id
, charp
, 0444);
8957 MODULE_PARM_DESC(id
, "ALSA id for the ACPI EC Mixer");
8958 module_param_named(enable
, alsa_enable
, bool, 0444);
8959 MODULE_PARM_DESC(enable
, "Enable the ALSA interface for the ACPI EC Mixer");
8960 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
8962 #define TPACPI_PARAM(feature) \
8963 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
8964 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
8965 "at module load, see documentation")
8967 TPACPI_PARAM(hotkey
);
8968 TPACPI_PARAM(bluetooth
);
8969 TPACPI_PARAM(video
);
8970 TPACPI_PARAM(light
);
8974 TPACPI_PARAM(brightness
);
8975 TPACPI_PARAM(volume
);
8978 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
8979 module_param(dbg_wlswemul
, uint
, 0444);
8980 MODULE_PARM_DESC(dbg_wlswemul
, "Enables WLSW emulation");
8981 module_param_named(wlsw_state
, tpacpi_wlsw_emulstate
, bool, 0);
8982 MODULE_PARM_DESC(wlsw_state
,
8983 "Initial state of the emulated WLSW switch");
8985 module_param(dbg_bluetoothemul
, uint
, 0444);
8986 MODULE_PARM_DESC(dbg_bluetoothemul
, "Enables bluetooth switch emulation");
8987 module_param_named(bluetooth_state
, tpacpi_bluetooth_emulstate
, bool, 0);
8988 MODULE_PARM_DESC(bluetooth_state
,
8989 "Initial state of the emulated bluetooth switch");
8991 module_param(dbg_wwanemul
, uint
, 0444);
8992 MODULE_PARM_DESC(dbg_wwanemul
, "Enables WWAN switch emulation");
8993 module_param_named(wwan_state
, tpacpi_wwan_emulstate
, bool, 0);
8994 MODULE_PARM_DESC(wwan_state
,
8995 "Initial state of the emulated WWAN switch");
8997 module_param(dbg_uwbemul
, uint
, 0444);
8998 MODULE_PARM_DESC(dbg_uwbemul
, "Enables UWB switch emulation");
8999 module_param_named(uwb_state
, tpacpi_uwb_emulstate
, bool, 0);
9000 MODULE_PARM_DESC(uwb_state
,
9001 "Initial state of the emulated UWB switch");
9004 static void thinkpad_acpi_module_exit(void)
9006 struct ibm_struct
*ibm
, *itmp
;
9008 tpacpi_lifecycle
= TPACPI_LIFE_EXITING
;
9010 list_for_each_entry_safe_reverse(ibm
, itmp
,
9011 &tpacpi_all_drivers
,
9016 dbg_printk(TPACPI_DBG_INIT
, "finished subdriver exit path...\n");
9018 if (tpacpi_inputdev
) {
9019 if (tp_features
.input_device_registered
)
9020 input_unregister_device(tpacpi_inputdev
);
9022 input_free_device(tpacpi_inputdev
);
9023 kfree(hotkey_keycode_map
);
9027 hwmon_device_unregister(tpacpi_hwmon
);
9029 if (tp_features
.sensors_pdev_attrs_registered
)
9030 device_remove_file(&tpacpi_sensors_pdev
->dev
,
9031 &dev_attr_thinkpad_acpi_pdev_name
);
9032 if (tpacpi_sensors_pdev
)
9033 platform_device_unregister(tpacpi_sensors_pdev
);
9035 platform_device_unregister(tpacpi_pdev
);
9037 if (tp_features
.sensors_pdrv_attrs_registered
)
9038 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver
.driver
);
9039 if (tp_features
.platform_drv_attrs_registered
)
9040 tpacpi_remove_driver_attributes(&tpacpi_pdriver
.driver
);
9042 if (tp_features
.sensors_pdrv_registered
)
9043 platform_driver_unregister(&tpacpi_hwmon_pdriver
);
9045 if (tp_features
.platform_drv_registered
)
9046 platform_driver_unregister(&tpacpi_pdriver
);
9049 remove_proc_entry(TPACPI_PROC_DIR
, acpi_root_dir
);
9052 destroy_workqueue(tpacpi_wq
);
9054 kfree(thinkpad_id
.bios_version_str
);
9055 kfree(thinkpad_id
.ec_version_str
);
9056 kfree(thinkpad_id
.model_str
);
9057 kfree(thinkpad_id
.nummodel_str
);
9061 static int __init
thinkpad_acpi_module_init(void)
9065 tpacpi_lifecycle
= TPACPI_LIFE_INIT
;
9067 /* Driver-level probe */
9069 ret
= get_thinkpad_model_data(&thinkpad_id
);
9071 pr_err("unable to get DMI data: %d\n", ret
);
9072 thinkpad_acpi_module_exit();
9075 ret
= probe_for_thinkpad();
9077 thinkpad_acpi_module_exit();
9081 /* Driver initialization */
9083 thinkpad_acpi_init_banner();
9084 tpacpi_check_outdated_fw();
9086 TPACPI_ACPIHANDLE_INIT(ecrd
);
9087 TPACPI_ACPIHANDLE_INIT(ecwr
);
9089 tpacpi_wq
= create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME
);
9091 thinkpad_acpi_module_exit();
9095 proc_dir
= proc_mkdir(TPACPI_PROC_DIR
, acpi_root_dir
);
9097 pr_err("unable to create proc dir " TPACPI_PROC_DIR
"\n");
9098 thinkpad_acpi_module_exit();
9102 ret
= platform_driver_register(&tpacpi_pdriver
);
9104 pr_err("unable to register main platform driver\n");
9105 thinkpad_acpi_module_exit();
9108 tp_features
.platform_drv_registered
= 1;
9110 ret
= platform_driver_register(&tpacpi_hwmon_pdriver
);
9112 pr_err("unable to register hwmon platform driver\n");
9113 thinkpad_acpi_module_exit();
9116 tp_features
.sensors_pdrv_registered
= 1;
9118 ret
= tpacpi_create_driver_attributes(&tpacpi_pdriver
.driver
);
9120 tp_features
.platform_drv_attrs_registered
= 1;
9121 ret
= tpacpi_create_driver_attributes(
9122 &tpacpi_hwmon_pdriver
.driver
);
9125 pr_err("unable to create sysfs driver attributes\n");
9126 thinkpad_acpi_module_exit();
9129 tp_features
.sensors_pdrv_attrs_registered
= 1;
9132 /* Device initialization */
9133 tpacpi_pdev
= platform_device_register_simple(TPACPI_DRVR_NAME
, -1,
9135 if (IS_ERR(tpacpi_pdev
)) {
9136 ret
= PTR_ERR(tpacpi_pdev
);
9138 pr_err("unable to register platform device\n");
9139 thinkpad_acpi_module_exit();
9142 tpacpi_sensors_pdev
= platform_device_register_simple(
9143 TPACPI_HWMON_DRVR_NAME
,
9145 if (IS_ERR(tpacpi_sensors_pdev
)) {
9146 ret
= PTR_ERR(tpacpi_sensors_pdev
);
9147 tpacpi_sensors_pdev
= NULL
;
9148 pr_err("unable to register hwmon platform device\n");
9149 thinkpad_acpi_module_exit();
9152 ret
= device_create_file(&tpacpi_sensors_pdev
->dev
,
9153 &dev_attr_thinkpad_acpi_pdev_name
);
9155 pr_err("unable to create sysfs hwmon device attributes\n");
9156 thinkpad_acpi_module_exit();
9159 tp_features
.sensors_pdev_attrs_registered
= 1;
9160 tpacpi_hwmon
= hwmon_device_register(&tpacpi_sensors_pdev
->dev
);
9161 if (IS_ERR(tpacpi_hwmon
)) {
9162 ret
= PTR_ERR(tpacpi_hwmon
);
9163 tpacpi_hwmon
= NULL
;
9164 pr_err("unable to register hwmon device\n");
9165 thinkpad_acpi_module_exit();
9168 mutex_init(&tpacpi_inputdev_send_mutex
);
9169 tpacpi_inputdev
= input_allocate_device();
9170 if (!tpacpi_inputdev
) {
9171 thinkpad_acpi_module_exit();
9174 /* Prepare input device, but don't register */
9175 tpacpi_inputdev
->name
= "ThinkPad Extra Buttons";
9176 tpacpi_inputdev
->phys
= TPACPI_DRVR_NAME
"/input0";
9177 tpacpi_inputdev
->id
.bustype
= BUS_HOST
;
9178 tpacpi_inputdev
->id
.vendor
= thinkpad_id
.vendor
;
9179 tpacpi_inputdev
->id
.product
= TPACPI_HKEY_INPUT_PRODUCT
;
9180 tpacpi_inputdev
->id
.version
= TPACPI_HKEY_INPUT_VERSION
;
9181 tpacpi_inputdev
->dev
.parent
= &tpacpi_pdev
->dev
;
9184 /* Init subdriver dependencies */
9185 tpacpi_detect_brightness_capabilities();
9187 /* Init subdrivers */
9188 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
9189 ret
= ibm_init(&ibms_init
[i
]);
9190 if (ret
>= 0 && *ibms_init
[i
].param
)
9191 ret
= ibms_init
[i
].data
->write(ibms_init
[i
].param
);
9193 thinkpad_acpi_module_exit();
9198 tpacpi_lifecycle
= TPACPI_LIFE_RUNNING
;
9200 ret
= input_register_device(tpacpi_inputdev
);
9202 pr_err("unable to register input device\n");
9203 thinkpad_acpi_module_exit();
9206 tp_features
.input_device_registered
= 1;
9212 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME
);
9215 * This will autoload the driver in almost every ThinkPad
9216 * in widespread use.
9218 * Only _VERY_ old models, like the 240, 240x and 570 lack
9219 * the HKEY event interface.
9221 MODULE_DEVICE_TABLE(acpi
, ibm_htk_device_ids
);
9224 * DMI matching for module autoloading
9226 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
9227 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
9229 * Only models listed in thinkwiki will be supported, so add yours
9230 * if it is not there yet.
9232 #define IBM_BIOS_MODULE_ALIAS(__type) \
9233 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
9235 /* Ancient thinkpad BIOSes have to be identified by
9236 * BIOS type or model number, and there are far less
9237 * BIOS types than model numbers... */
9238 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
9240 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
9241 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
9242 MODULE_DESCRIPTION(TPACPI_DESC
);
9243 MODULE_VERSION(TPACPI_VERSION
);
9244 MODULE_LICENSE("GPL");
9246 module_init(thinkpad_acpi_module_init
);
9247 module_exit(thinkpad_acpi_module_exit
);