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 TPACPI_VERSION "0.24"
25 #define TPACPI_SYSFS_VERSION 0x020700
29 * 2007-10-20 changelog trimmed down
31 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
34 * 2006-11-22 0.13 new maintainer
35 * changelog now lives in git commit history, and will
36 * not be updated further in-file.
38 * 2005-03-17 0.11 support for 600e, 770x
39 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
41 * 2005-01-16 0.9 use MODULE_VERSION
42 * thanks to Henrik Brix Andersen <brix@gentoo.org>
43 * fix parameter passing on module loading
44 * thanks to Rusty Russell <rusty@rustcorp.com.au>
45 * thanks to Jim Radford <radford@blackbean.org>
46 * 2004-11-08 0.8 fix init error case, don't return from a macro
47 * thanks to Chris Wright <chrisw@osdl.org>
50 #include <linux/kernel.h>
51 #include <linux/module.h>
52 #include <linux/init.h>
53 #include <linux/types.h>
54 #include <linux/string.h>
55 #include <linux/list.h>
56 #include <linux/mutex.h>
57 #include <linux/sched.h>
58 #include <linux/kthread.h>
59 #include <linux/freezer.h>
60 #include <linux/delay.h>
61 #include <linux/slab.h>
63 #include <linux/nvram.h>
64 #include <linux/proc_fs.h>
65 #include <linux/seq_file.h>
66 #include <linux/sysfs.h>
67 #include <linux/backlight.h>
69 #include <linux/platform_device.h>
70 #include <linux/hwmon.h>
71 #include <linux/hwmon-sysfs.h>
72 #include <linux/input.h>
73 #include <linux/leds.h>
74 #include <linux/rfkill.h>
75 #include <asm/uaccess.h>
77 #include <linux/dmi.h>
78 #include <linux/jiffies.h>
79 #include <linux/workqueue.h>
81 #include <sound/core.h>
82 #include <sound/control.h>
83 #include <sound/initval.h>
85 #include <acpi/acpi_drivers.h>
87 #include <linux/pci_ids.h>
90 /* ThinkPad CMOS commands */
91 #define TP_CMOS_VOLUME_DOWN 0
92 #define TP_CMOS_VOLUME_UP 1
93 #define TP_CMOS_VOLUME_MUTE 2
94 #define TP_CMOS_BRIGHTNESS_UP 4
95 #define TP_CMOS_BRIGHTNESS_DOWN 5
96 #define TP_CMOS_THINKLIGHT_ON 12
97 #define TP_CMOS_THINKLIGHT_OFF 13
101 TP_NVRAM_ADDR_HK2
= 0x57,
102 TP_NVRAM_ADDR_THINKLIGHT
= 0x58,
103 TP_NVRAM_ADDR_VIDEO
= 0x59,
104 TP_NVRAM_ADDR_BRIGHTNESS
= 0x5e,
105 TP_NVRAM_ADDR_MIXER
= 0x60,
108 /* NVRAM bit masks */
110 TP_NVRAM_MASK_HKT_THINKPAD
= 0x08,
111 TP_NVRAM_MASK_HKT_ZOOM
= 0x20,
112 TP_NVRAM_MASK_HKT_DISPLAY
= 0x40,
113 TP_NVRAM_MASK_HKT_HIBERNATE
= 0x80,
114 TP_NVRAM_MASK_THINKLIGHT
= 0x10,
115 TP_NVRAM_MASK_HKT_DISPEXPND
= 0x30,
116 TP_NVRAM_MASK_HKT_BRIGHTNESS
= 0x20,
117 TP_NVRAM_MASK_LEVEL_BRIGHTNESS
= 0x0f,
118 TP_NVRAM_POS_LEVEL_BRIGHTNESS
= 0,
119 TP_NVRAM_MASK_MUTE
= 0x40,
120 TP_NVRAM_MASK_HKT_VOLUME
= 0x80,
121 TP_NVRAM_MASK_LEVEL_VOLUME
= 0x0f,
122 TP_NVRAM_POS_LEVEL_VOLUME
= 0,
125 /* Misc NVRAM-related */
127 TP_NVRAM_LEVEL_VOLUME_MAX
= 14,
131 #define TPACPI_ACPI_HKEY_HID "IBM0068"
132 #define TPACPI_ACPI_EC_HID "PNP0C09"
135 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
136 #define TPACPI_HKEY_INPUT_VERSION 0x4101
138 /* ACPI \WGSV commands */
140 TP_ACPI_WGSV_GET_STATE
= 0x01, /* Get state information */
141 TP_ACPI_WGSV_PWR_ON_ON_RESUME
= 0x02, /* Resume WWAN powered on */
142 TP_ACPI_WGSV_PWR_OFF_ON_RESUME
= 0x03, /* Resume WWAN powered off */
143 TP_ACPI_WGSV_SAVE_STATE
= 0x04, /* Save state for S4/S5 */
146 /* TP_ACPI_WGSV_GET_STATE bits */
148 TP_ACPI_WGSV_STATE_WWANEXIST
= 0x0001, /* WWAN hw available */
149 TP_ACPI_WGSV_STATE_WWANPWR
= 0x0002, /* WWAN radio enabled */
150 TP_ACPI_WGSV_STATE_WWANPWRRES
= 0x0004, /* WWAN state at resume */
151 TP_ACPI_WGSV_STATE_WWANBIOSOFF
= 0x0008, /* WWAN disabled in BIOS */
152 TP_ACPI_WGSV_STATE_BLTHEXIST
= 0x0001, /* BLTH hw available */
153 TP_ACPI_WGSV_STATE_BLTHPWR
= 0x0002, /* BLTH radio enabled */
154 TP_ACPI_WGSV_STATE_BLTHPWRRES
= 0x0004, /* BLTH state at resume */
155 TP_ACPI_WGSV_STATE_BLTHBIOSOFF
= 0x0008, /* BLTH disabled in BIOS */
156 TP_ACPI_WGSV_STATE_UWBEXIST
= 0x0010, /* UWB hw available */
157 TP_ACPI_WGSV_STATE_UWBPWR
= 0x0020, /* UWB radio enabled */
161 enum tpacpi_hkey_event_t
{
163 TP_HKEY_EV_HOTKEY_BASE
= 0x1001, /* first hotkey (FN+F1) */
164 TP_HKEY_EV_BRGHT_UP
= 0x1010, /* Brightness up */
165 TP_HKEY_EV_BRGHT_DOWN
= 0x1011, /* Brightness down */
166 TP_HKEY_EV_VOL_UP
= 0x1015, /* Volume up or unmute */
167 TP_HKEY_EV_VOL_DOWN
= 0x1016, /* Volume down or unmute */
168 TP_HKEY_EV_VOL_MUTE
= 0x1017, /* Mixer output mute */
170 /* Reasons for waking up from S3/S4 */
171 TP_HKEY_EV_WKUP_S3_UNDOCK
= 0x2304, /* undock requested, S3 */
172 TP_HKEY_EV_WKUP_S4_UNDOCK
= 0x2404, /* undock requested, S4 */
173 TP_HKEY_EV_WKUP_S3_BAYEJ
= 0x2305, /* bay ejection req, S3 */
174 TP_HKEY_EV_WKUP_S4_BAYEJ
= 0x2405, /* bay ejection req, S4 */
175 TP_HKEY_EV_WKUP_S3_BATLOW
= 0x2313, /* battery empty, S3 */
176 TP_HKEY_EV_WKUP_S4_BATLOW
= 0x2413, /* battery empty, S4 */
178 /* Auto-sleep after eject request */
179 TP_HKEY_EV_BAYEJ_ACK
= 0x3003, /* bay ejection complete */
180 TP_HKEY_EV_UNDOCK_ACK
= 0x4003, /* undock complete */
182 /* Misc bay events */
183 TP_HKEY_EV_OPTDRV_EJ
= 0x3006, /* opt. drive tray ejected */
185 /* User-interface events */
186 TP_HKEY_EV_LID_CLOSE
= 0x5001, /* laptop lid closed */
187 TP_HKEY_EV_LID_OPEN
= 0x5002, /* laptop lid opened */
188 TP_HKEY_EV_TABLET_TABLET
= 0x5009, /* tablet swivel up */
189 TP_HKEY_EV_TABLET_NOTEBOOK
= 0x500a, /* tablet swivel down */
190 TP_HKEY_EV_PEN_INSERTED
= 0x500b, /* tablet pen inserted */
191 TP_HKEY_EV_PEN_REMOVED
= 0x500c, /* tablet pen removed */
192 TP_HKEY_EV_BRGHT_CHANGED
= 0x5010, /* backlight control event */
195 TP_HKEY_EV_ALARM_BAT_HOT
= 0x6011, /* battery too hot */
196 TP_HKEY_EV_ALARM_BAT_XHOT
= 0x6012, /* battery critically hot */
197 TP_HKEY_EV_ALARM_SENSOR_HOT
= 0x6021, /* sensor too hot */
198 TP_HKEY_EV_ALARM_SENSOR_XHOT
= 0x6022, /* sensor critically hot */
199 TP_HKEY_EV_THM_TABLE_CHANGED
= 0x6030, /* thermal table changed */
202 TP_HKEY_EV_RFKILL_CHANGED
= 0x7000, /* rfkill switch changed */
205 /****************************************************************************
209 #define TPACPI_NAME "thinkpad"
210 #define TPACPI_DESC "ThinkPad ACPI Extras"
211 #define TPACPI_FILE TPACPI_NAME "_acpi"
212 #define TPACPI_URL "http://ibm-acpi.sf.net/"
213 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
215 #define TPACPI_PROC_DIR "ibm"
216 #define TPACPI_ACPI_EVENT_PREFIX "ibm"
217 #define TPACPI_DRVR_NAME TPACPI_FILE
218 #define TPACPI_DRVR_SHORTNAME "tpacpi"
219 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
221 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
222 #define TPACPI_WORKQUEUE_NAME "ktpacpid"
224 #define TPACPI_MAX_ACPI_ARGS 3
227 #define TPACPI_LOG TPACPI_FILE ": "
228 #define TPACPI_EMERG KERN_EMERG TPACPI_LOG
229 #define TPACPI_ALERT KERN_ALERT TPACPI_LOG
230 #define TPACPI_CRIT KERN_CRIT TPACPI_LOG
231 #define TPACPI_ERR KERN_ERR TPACPI_LOG
232 #define TPACPI_WARN KERN_WARNING TPACPI_LOG
233 #define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
234 #define TPACPI_INFO KERN_INFO TPACPI_LOG
235 #define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
237 /* Debugging printk groups */
238 #define TPACPI_DBG_ALL 0xffff
239 #define TPACPI_DBG_DISCLOSETASK 0x8000
240 #define TPACPI_DBG_INIT 0x0001
241 #define TPACPI_DBG_EXIT 0x0002
242 #define TPACPI_DBG_RFKILL 0x0004
243 #define TPACPI_DBG_HKEY 0x0008
244 #define TPACPI_DBG_FAN 0x0010
245 #define TPACPI_DBG_BRGHT 0x0020
246 #define TPACPI_DBG_MIXER 0x0040
248 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
249 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
250 #define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
253 /****************************************************************************
254 * Driver-wide structs and misc. variables
259 struct tp_acpi_drv_struct
{
260 const struct acpi_device_id
*hid
;
261 struct acpi_driver
*driver
;
263 void (*notify
) (struct ibm_struct
*, u32
);
266 struct acpi_device
*device
;
272 int (*read
) (struct seq_file
*);
273 int (*write
) (char *);
275 void (*resume
) (void);
276 void (*suspend
) (pm_message_t state
);
277 void (*shutdown
) (void);
279 struct list_head all_drivers
;
281 struct tp_acpi_drv_struct
*acpi
;
284 u8 acpi_driver_registered
:1;
285 u8 acpi_notify_installed
:1;
292 struct ibm_init_struct
{
295 int (*init
) (struct ibm_init_struct
*);
296 mode_t base_procfs_mode
;
297 struct ibm_struct
*data
;
308 u32 bright_acpimode
:1;
312 u32 fan_ctrl_status_undef
:1;
314 u32 beep_needs_two_args
:1;
315 u32 mixer_no_level_control
:1;
316 u32 input_device_registered
:1;
317 u32 platform_drv_registered
:1;
318 u32 platform_drv_attrs_registered
:1;
319 u32 sensors_pdrv_registered
:1;
320 u32 sensors_pdrv_attrs_registered
:1;
321 u32 sensors_pdev_attrs_registered
:1;
322 u32 hotkey_poll_active
:1;
326 u16 hotkey_mask_ff
:1;
327 u16 volume_ctrl_forbidden
:1;
330 struct thinkpad_id_data
{
331 unsigned int vendor
; /* ThinkPad vendor:
332 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
334 char *bios_version_str
; /* Something like 1ZET51WW (1.03z) */
335 char *ec_version_str
; /* Something like 1ZHT51WW-1.04a */
337 u16 bios_model
; /* 1Y = 0x5931, 0 = unknown */
339 u16 bios_release
; /* 1ZETK1WW = 0x314b, 0 = unknown */
342 char *model_str
; /* ThinkPad T43 */
343 char *nummodel_str
; /* 9384A9C for a 9384-A9C model */
345 static struct thinkpad_id_data thinkpad_id
;
348 TPACPI_LIFE_INIT
= 0,
353 static int experimental
;
354 static u32 dbg_level
;
356 static struct workqueue_struct
*tpacpi_wq
;
364 /* Special LED class that can defer work */
365 struct tpacpi_led_classdev
{
366 struct led_classdev led_classdev
;
367 struct work_struct work
;
368 enum led_status_t new_state
;
372 /* brightness level capabilities */
373 static unsigned int bright_maxlvl
; /* 0 = unknown */
375 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
376 static int dbg_wlswemul
;
377 static int tpacpi_wlsw_emulstate
;
378 static int dbg_bluetoothemul
;
379 static int tpacpi_bluetooth_emulstate
;
380 static int dbg_wwanemul
;
381 static int tpacpi_wwan_emulstate
;
382 static int dbg_uwbemul
;
383 static int tpacpi_uwb_emulstate
;
387 /*************************************************************************
391 #define dbg_printk(a_dbg_level, format, arg...) \
392 do { if (dbg_level & (a_dbg_level)) \
393 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
396 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
397 #define vdbg_printk dbg_printk
398 static const char *str_supported(int is_supported
);
400 #define vdbg_printk(a_dbg_level, format, arg...) \
404 static void tpacpi_log_usertask(const char * const what
)
406 printk(TPACPI_DEBUG
"%s: access by process with PID %d\n",
407 what
, task_tgid_vnr(current
));
410 #define tpacpi_disclose_usertask(what, format, arg...) \
413 (dbg_level & TPACPI_DBG_DISCLOSETASK) && \
414 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
415 printk(TPACPI_DEBUG "%s: PID %d: " format, \
416 what, task_tgid_vnr(current), ## arg); \
421 * Quirk handling helpers
423 * ThinkPad IDs and versions seen in the field so far
424 * are two-characters from the set [0-9A-Z], i.e. base 36.
426 * We use values well outside that range as specials.
429 #define TPACPI_MATCH_ANY 0xffffU
430 #define TPACPI_MATCH_UNKNOWN 0U
432 /* TPID('1', 'Y') == 0x5931 */
433 #define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
435 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \
436 { .vendor = PCI_VENDOR_ID_IBM, \
437 .bios = TPID(__id1, __id2), \
438 .ec = TPACPI_MATCH_ANY, \
439 .quirks = (__quirk) }
441 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \
442 { .vendor = PCI_VENDOR_ID_LENOVO, \
443 .bios = TPID(__id1, __id2), \
444 .ec = TPACPI_MATCH_ANY, \
445 .quirks = (__quirk) }
447 #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
448 { .vendor = PCI_VENDOR_ID_LENOVO, \
449 .bios = TPACPI_MATCH_ANY, \
450 .ec = TPID(__id1, __id2), \
451 .quirks = (__quirk) }
453 struct tpacpi_quirk
{
457 unsigned long quirks
;
461 * tpacpi_check_quirks() - search BIOS/EC version on a list
462 * @qlist: array of &struct tpacpi_quirk
463 * @qlist_size: number of elements in @qlist
465 * Iterates over a quirks list until one is found that matches the
466 * ThinkPad's vendor, BIOS and EC model.
468 * Returns 0 if nothing matches, otherwise returns the quirks field of
469 * the matching &struct tpacpi_quirk entry.
471 * The match criteria is: vendor, ec and bios much match.
473 static unsigned long __init
tpacpi_check_quirks(
474 const struct tpacpi_quirk
*qlist
,
475 unsigned int qlist_size
)
478 if ((qlist
->vendor
== thinkpad_id
.vendor
||
479 qlist
->vendor
== TPACPI_MATCH_ANY
) &&
480 (qlist
->bios
== thinkpad_id
.bios_model
||
481 qlist
->bios
== TPACPI_MATCH_ANY
) &&
482 (qlist
->ec
== thinkpad_id
.ec_model
||
483 qlist
->ec
== TPACPI_MATCH_ANY
))
484 return qlist
->quirks
;
492 static inline bool __pure __init
tpacpi_is_lenovo(void)
494 return thinkpad_id
.vendor
== PCI_VENDOR_ID_LENOVO
;
497 static inline bool __pure __init
tpacpi_is_ibm(void)
499 return thinkpad_id
.vendor
== PCI_VENDOR_ID_IBM
;
502 /****************************************************************************
503 ****************************************************************************
505 * ACPI Helpers and device model
507 ****************************************************************************
508 ****************************************************************************/
510 /*************************************************************************
514 static acpi_handle root_handle
;
515 static acpi_handle ec_handle
;
517 #define TPACPI_HANDLE(object, parent, paths...) \
518 static acpi_handle object##_handle; \
519 static acpi_handle *object##_parent = &parent##_handle; \
520 static char *object##_path; \
521 static char *object##_paths[] = { paths }
523 TPACPI_HANDLE(ecrd
, ec
, "ECRD"); /* 570 */
524 TPACPI_HANDLE(ecwr
, ec
, "ECWR"); /* 570 */
526 TPACPI_HANDLE(cmos
, root
, "\\UCMS", /* R50, R50e, R50p, R51, */
528 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
529 "\\CMS", /* R40, R40e */
532 TPACPI_HANDLE(hkey
, ec
, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
533 "^HKEY", /* R30, R31 */
534 "HKEY", /* all others */
537 TPACPI_HANDLE(vid
, root
, "\\_SB.PCI.AGP.VGA", /* 570 */
538 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
539 "\\_SB.PCI0.VID0", /* 770e */
540 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
541 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
542 "\\_SB.PCI0.AGP.VID", /* all others */
546 /*************************************************************************
550 static int acpi_evalf(acpi_handle handle
,
551 void *res
, char *method
, char *fmt
, ...)
554 struct acpi_object_list params
;
555 union acpi_object in_objs
[TPACPI_MAX_ACPI_ARGS
];
556 struct acpi_buffer result
, *resultp
;
557 union acpi_object out_obj
;
565 printk(TPACPI_ERR
"acpi_evalf() called with empty format\n");
578 params
.pointer
= &in_objs
[0];
585 in_objs
[params
.count
].integer
.value
= va_arg(ap
, int);
586 in_objs
[params
.count
++].type
= ACPI_TYPE_INTEGER
;
588 /* add more types as needed */
590 printk(TPACPI_ERR
"acpi_evalf() called "
591 "with invalid format character '%c'\n", c
);
597 if (res_type
!= 'v') {
598 result
.length
= sizeof(out_obj
);
599 result
.pointer
= &out_obj
;
604 status
= acpi_evaluate_object(handle
, method
, ¶ms
, resultp
);
608 success
= (status
== AE_OK
&&
609 out_obj
.type
== ACPI_TYPE_INTEGER
);
611 *(int *)res
= out_obj
.integer
.value
;
614 success
= status
== AE_OK
;
616 /* add more types as needed */
618 printk(TPACPI_ERR
"acpi_evalf() called "
619 "with invalid format character '%c'\n", res_type
);
623 if (!success
&& !quiet
)
624 printk(TPACPI_ERR
"acpi_evalf(%s, %s, ...) failed: %s\n",
625 method
, fmt0
, acpi_format_exception(status
));
630 static int acpi_ec_read(int i
, u8
*p
)
635 if (!acpi_evalf(ecrd_handle
, &v
, NULL
, "dd", i
))
639 if (ec_read(i
, p
) < 0)
646 static int acpi_ec_write(int i
, u8 v
)
649 if (!acpi_evalf(ecwr_handle
, NULL
, NULL
, "vdd", i
, v
))
652 if (ec_write(i
, v
) < 0)
659 static int issue_thinkpad_cmos_command(int cmos_cmd
)
664 if (!acpi_evalf(cmos_handle
, NULL
, NULL
, "vd", cmos_cmd
))
670 /*************************************************************************
674 #define TPACPI_ACPIHANDLE_INIT(object) \
675 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
676 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
678 static void drv_acpi_handle_init(char *name
,
679 acpi_handle
*handle
, acpi_handle parent
,
680 char **paths
, int num_paths
, char **path
)
685 vdbg_printk(TPACPI_DBG_INIT
, "trying to locate ACPI handle for %s\n",
688 for (i
= 0; i
< num_paths
; i
++) {
689 status
= acpi_get_handle(parent
, paths
[i
], handle
);
690 if (ACPI_SUCCESS(status
)) {
692 dbg_printk(TPACPI_DBG_INIT
,
693 "Found ACPI handle %s for %s\n",
699 vdbg_printk(TPACPI_DBG_INIT
, "ACPI handle for %s not found\n",
704 static acpi_status __init
tpacpi_acpi_handle_locate_callback(acpi_handle handle
,
705 u32 level
, void *context
, void **return_value
)
707 *(acpi_handle
*)return_value
= handle
;
709 return AE_CTRL_TERMINATE
;
712 static void __init
tpacpi_acpi_handle_locate(const char *name
,
717 acpi_handle device_found
;
719 BUG_ON(!name
|| !hid
|| !handle
);
720 vdbg_printk(TPACPI_DBG_INIT
,
721 "trying to locate ACPI handle for %s, using HID %s\n",
724 memset(&device_found
, 0, sizeof(device_found
));
725 status
= acpi_get_devices(hid
, tpacpi_acpi_handle_locate_callback
,
726 (void *)name
, &device_found
);
730 if (ACPI_SUCCESS(status
)) {
731 *handle
= device_found
;
732 dbg_printk(TPACPI_DBG_INIT
,
733 "Found ACPI handle for %s\n", name
);
735 vdbg_printk(TPACPI_DBG_INIT
,
736 "Could not locate an ACPI handle for %s: %s\n",
737 name
, acpi_format_exception(status
));
741 static void dispatch_acpi_notify(acpi_handle handle
, u32 event
, void *data
)
743 struct ibm_struct
*ibm
= data
;
745 if (tpacpi_lifecycle
!= TPACPI_LIFE_RUNNING
)
748 if (!ibm
|| !ibm
->acpi
|| !ibm
->acpi
->notify
)
751 ibm
->acpi
->notify(ibm
, event
);
754 static int __init
setup_acpi_notify(struct ibm_struct
*ibm
)
761 if (!*ibm
->acpi
->handle
)
764 vdbg_printk(TPACPI_DBG_INIT
,
765 "setting up ACPI notify for %s\n", ibm
->name
);
767 rc
= acpi_bus_get_device(*ibm
->acpi
->handle
, &ibm
->acpi
->device
);
769 printk(TPACPI_ERR
"acpi_bus_get_device(%s) failed: %d\n",
774 ibm
->acpi
->device
->driver_data
= ibm
;
775 sprintf(acpi_device_class(ibm
->acpi
->device
), "%s/%s",
776 TPACPI_ACPI_EVENT_PREFIX
,
779 status
= acpi_install_notify_handler(*ibm
->acpi
->handle
,
780 ibm
->acpi
->type
, dispatch_acpi_notify
, ibm
);
781 if (ACPI_FAILURE(status
)) {
782 if (status
== AE_ALREADY_EXISTS
) {
784 "another device driver is already "
785 "handling %s events\n", ibm
->name
);
788 "acpi_install_notify_handler(%s) failed: %d\n",
793 ibm
->flags
.acpi_notify_installed
= 1;
797 static int __init
tpacpi_device_add(struct acpi_device
*device
)
802 static int __init
register_tpacpi_subdriver(struct ibm_struct
*ibm
)
806 dbg_printk(TPACPI_DBG_INIT
,
807 "registering %s as an ACPI driver\n", ibm
->name
);
811 ibm
->acpi
->driver
= kzalloc(sizeof(struct acpi_driver
), GFP_KERNEL
);
812 if (!ibm
->acpi
->driver
) {
814 "failed to allocate memory for ibm->acpi->driver\n");
818 sprintf(ibm
->acpi
->driver
->name
, "%s_%s", TPACPI_NAME
, ibm
->name
);
819 ibm
->acpi
->driver
->ids
= ibm
->acpi
->hid
;
821 ibm
->acpi
->driver
->ops
.add
= &tpacpi_device_add
;
823 rc
= acpi_bus_register_driver(ibm
->acpi
->driver
);
825 printk(TPACPI_ERR
"acpi_bus_register_driver(%s) failed: %d\n",
827 kfree(ibm
->acpi
->driver
);
828 ibm
->acpi
->driver
= NULL
;
830 ibm
->flags
.acpi_driver_registered
= 1;
836 /****************************************************************************
837 ****************************************************************************
841 ****************************************************************************
842 ****************************************************************************/
844 static int dispatch_proc_show(struct seq_file
*m
, void *v
)
846 struct ibm_struct
*ibm
= m
->private;
848 if (!ibm
|| !ibm
->read
)
853 static int dispatch_proc_open(struct inode
*inode
, struct file
*file
)
855 return single_open(file
, dispatch_proc_show
, PDE(inode
)->data
);
858 static ssize_t
dispatch_proc_write(struct file
*file
,
859 const char __user
*userbuf
,
860 size_t count
, loff_t
*pos
)
862 struct ibm_struct
*ibm
= PDE(file
->f_path
.dentry
->d_inode
)->data
;
866 if (!ibm
|| !ibm
->write
)
868 if (count
> PAGE_SIZE
- 2)
871 kernbuf
= kmalloc(count
+ 2, GFP_KERNEL
);
875 if (copy_from_user(kernbuf
, userbuf
, count
)) {
881 strcat(kernbuf
, ",");
882 ret
= ibm
->write(kernbuf
);
891 static const struct file_operations dispatch_proc_fops
= {
892 .owner
= THIS_MODULE
,
893 .open
= dispatch_proc_open
,
896 .release
= single_release
,
897 .write
= dispatch_proc_write
,
900 static char *next_cmd(char **cmds
)
905 while ((end
= strchr(start
, ',')) && end
== start
)
917 /****************************************************************************
918 ****************************************************************************
920 * Device model: input, hwmon and platform
922 ****************************************************************************
923 ****************************************************************************/
925 static struct platform_device
*tpacpi_pdev
;
926 static struct platform_device
*tpacpi_sensors_pdev
;
927 static struct device
*tpacpi_hwmon
;
928 static struct input_dev
*tpacpi_inputdev
;
929 static struct mutex tpacpi_inputdev_send_mutex
;
930 static LIST_HEAD(tpacpi_all_drivers
);
932 static int tpacpi_suspend_handler(struct platform_device
*pdev
,
935 struct ibm_struct
*ibm
, *itmp
;
937 list_for_each_entry_safe(ibm
, itmp
,
941 (ibm
->suspend
)(state
);
947 static int tpacpi_resume_handler(struct platform_device
*pdev
)
949 struct ibm_struct
*ibm
, *itmp
;
951 list_for_each_entry_safe(ibm
, itmp
,
961 static void tpacpi_shutdown_handler(struct platform_device
*pdev
)
963 struct ibm_struct
*ibm
, *itmp
;
965 list_for_each_entry_safe(ibm
, itmp
,
973 static struct platform_driver tpacpi_pdriver
= {
975 .name
= TPACPI_DRVR_NAME
,
976 .owner
= THIS_MODULE
,
978 .suspend
= tpacpi_suspend_handler
,
979 .resume
= tpacpi_resume_handler
,
980 .shutdown
= tpacpi_shutdown_handler
,
983 static struct platform_driver tpacpi_hwmon_pdriver
= {
985 .name
= TPACPI_HWMON_DRVR_NAME
,
986 .owner
= THIS_MODULE
,
990 /*************************************************************************
991 * sysfs support helpers
994 struct attribute_set
{
995 unsigned int members
, max_members
;
996 struct attribute_group group
;
999 struct attribute_set_obj
{
1000 struct attribute_set s
;
1001 struct attribute
*a
;
1002 } __attribute__((packed
));
1004 static struct attribute_set
*create_attr_set(unsigned int max_members
,
1007 struct attribute_set_obj
*sobj
;
1009 if (max_members
== 0)
1012 /* Allocates space for implicit NULL at the end too */
1013 sobj
= kzalloc(sizeof(struct attribute_set_obj
) +
1014 max_members
* sizeof(struct attribute
*),
1018 sobj
->s
.max_members
= max_members
;
1019 sobj
->s
.group
.attrs
= &sobj
->a
;
1020 sobj
->s
.group
.name
= name
;
1025 #define destroy_attr_set(_set) \
1028 /* not multi-threaded safe, use it in a single thread per set */
1029 static int add_to_attr_set(struct attribute_set
*s
, struct attribute
*attr
)
1034 if (s
->members
>= s
->max_members
)
1037 s
->group
.attrs
[s
->members
] = attr
;
1043 static int add_many_to_attr_set(struct attribute_set
*s
,
1044 struct attribute
**attr
,
1049 for (i
= 0; i
< count
; i
++) {
1050 res
= add_to_attr_set(s
, attr
[i
]);
1058 static void delete_attr_set(struct attribute_set
*s
, struct kobject
*kobj
)
1060 sysfs_remove_group(kobj
, &s
->group
);
1061 destroy_attr_set(s
);
1064 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
1065 sysfs_create_group(_kobj, &_attr_set->group)
1067 static int parse_strtoul(const char *buf
,
1068 unsigned long max
, unsigned long *value
)
1072 *value
= simple_strtoul(skip_spaces(buf
), &endp
, 0);
1073 endp
= skip_spaces(endp
);
1074 if (*endp
|| *value
> max
)
1080 static void tpacpi_disable_brightness_delay(void)
1082 if (acpi_evalf(hkey_handle
, NULL
, "PWMS", "qvd", 0))
1083 printk(TPACPI_NOTICE
1084 "ACPI backlight control delay disabled\n");
1087 static void printk_deprecated_attribute(const char * const what
,
1088 const char * const details
)
1090 tpacpi_log_usertask("deprecated sysfs attribute");
1091 printk(TPACPI_WARN
"WARNING: sysfs attribute %s is deprecated and "
1092 "will be removed. %s\n",
1096 /*************************************************************************
1097 * rfkill and radio control support helpers
1101 * ThinkPad-ACPI firmware handling model:
1103 * WLSW (master wireless switch) is event-driven, and is common to all
1104 * firmware-controlled radios. It cannot be controlled, just monitored,
1105 * as expected. It overrides all radio state in firmware
1107 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1108 * (TODO: verify how WLSW interacts with the returned radio state).
1110 * The only time there are shadow radio state changes, is when
1111 * masked-off hotkeys are used.
1115 * Internal driver API for radio state:
1117 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1118 * bool: true means radio blocked (off)
1120 enum tpacpi_rfkill_state
{
1121 TPACPI_RFK_RADIO_OFF
= 0,
1125 /* rfkill switches */
1126 enum tpacpi_rfk_id
{
1127 TPACPI_RFK_BLUETOOTH_SW_ID
= 0,
1128 TPACPI_RFK_WWAN_SW_ID
,
1129 TPACPI_RFK_UWB_SW_ID
,
1133 static const char *tpacpi_rfkill_names
[] = {
1134 [TPACPI_RFK_BLUETOOTH_SW_ID
] = "bluetooth",
1135 [TPACPI_RFK_WWAN_SW_ID
] = "wwan",
1136 [TPACPI_RFK_UWB_SW_ID
] = "uwb",
1137 [TPACPI_RFK_SW_MAX
] = NULL
1140 /* ThinkPad-ACPI rfkill subdriver */
1142 struct rfkill
*rfkill
;
1143 enum tpacpi_rfk_id id
;
1144 const struct tpacpi_rfk_ops
*ops
;
1147 struct tpacpi_rfk_ops
{
1148 /* firmware interface */
1149 int (*get_status
)(void);
1150 int (*set_status
)(const enum tpacpi_rfkill_state
);
1153 static struct tpacpi_rfk
*tpacpi_rfkill_switches
[TPACPI_RFK_SW_MAX
];
1155 /* Query FW and update rfkill sw state for a given rfkill switch */
1156 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk
*tp_rfk
)
1163 status
= (tp_rfk
->ops
->get_status
)();
1167 rfkill_set_sw_state(tp_rfk
->rfkill
,
1168 (status
== TPACPI_RFK_RADIO_OFF
));
1173 /* Query FW and update rfkill sw state for all rfkill switches */
1174 static void tpacpi_rfk_update_swstate_all(void)
1178 for (i
= 0; i
< TPACPI_RFK_SW_MAX
; i
++)
1179 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[i
]);
1183 * Sync the HW-blocking state of all rfkill switches,
1184 * do notice it causes the rfkill core to schedule uevents
1186 static void tpacpi_rfk_update_hwblock_state(bool blocked
)
1189 struct tpacpi_rfk
*tp_rfk
;
1191 for (i
= 0; i
< TPACPI_RFK_SW_MAX
; i
++) {
1192 tp_rfk
= tpacpi_rfkill_switches
[i
];
1194 if (rfkill_set_hw_state(tp_rfk
->rfkill
,
1196 /* ignore -- we track sw block */
1202 /* Call to get the WLSW state from the firmware */
1203 static int hotkey_get_wlsw(void);
1205 /* Call to query WLSW state and update all rfkill switches */
1206 static bool tpacpi_rfk_check_hwblock_state(void)
1208 int res
= hotkey_get_wlsw();
1211 /* When unknown or unsupported, we have to assume it is unblocked */
1215 hw_blocked
= (res
== TPACPI_RFK_RADIO_OFF
);
1216 tpacpi_rfk_update_hwblock_state(hw_blocked
);
1221 static int tpacpi_rfk_hook_set_block(void *data
, bool blocked
)
1223 struct tpacpi_rfk
*tp_rfk
= data
;
1226 dbg_printk(TPACPI_DBG_RFKILL
,
1227 "request to change radio state to %s\n",
1228 blocked
? "blocked" : "unblocked");
1230 /* try to set radio state */
1231 res
= (tp_rfk
->ops
->set_status
)(blocked
?
1232 TPACPI_RFK_RADIO_OFF
: TPACPI_RFK_RADIO_ON
);
1234 /* and update the rfkill core with whatever the FW really did */
1235 tpacpi_rfk_update_swstate(tp_rfk
);
1237 return (res
< 0) ? res
: 0;
1240 static const struct rfkill_ops tpacpi_rfk_rfkill_ops
= {
1241 .set_block
= tpacpi_rfk_hook_set_block
,
1244 static int __init
tpacpi_new_rfkill(const enum tpacpi_rfk_id id
,
1245 const struct tpacpi_rfk_ops
*tp_rfkops
,
1246 const enum rfkill_type rfktype
,
1248 const bool set_default
)
1250 struct tpacpi_rfk
*atp_rfk
;
1252 bool sw_state
= false;
1256 BUG_ON(id
>= TPACPI_RFK_SW_MAX
|| tpacpi_rfkill_switches
[id
]);
1258 atp_rfk
= kzalloc(sizeof(struct tpacpi_rfk
), GFP_KERNEL
);
1260 atp_rfk
->rfkill
= rfkill_alloc(name
,
1263 &tpacpi_rfk_rfkill_ops
,
1265 if (!atp_rfk
|| !atp_rfk
->rfkill
) {
1267 "failed to allocate memory for rfkill class\n");
1273 atp_rfk
->ops
= tp_rfkops
;
1275 sw_status
= (tp_rfkops
->get_status
)();
1276 if (sw_status
< 0) {
1278 "failed to read initial state for %s, error %d\n",
1281 sw_state
= (sw_status
== TPACPI_RFK_RADIO_OFF
);
1283 /* try to keep the initial state, since we ask the
1284 * firmware to preserve it across S5 in NVRAM */
1285 rfkill_init_sw_state(atp_rfk
->rfkill
, sw_state
);
1288 hw_state
= tpacpi_rfk_check_hwblock_state();
1289 rfkill_set_hw_state(atp_rfk
->rfkill
, hw_state
);
1291 res
= rfkill_register(atp_rfk
->rfkill
);
1294 "failed to register %s rfkill switch: %d\n",
1296 rfkill_destroy(atp_rfk
->rfkill
);
1301 tpacpi_rfkill_switches
[id
] = atp_rfk
;
1303 printk(TPACPI_INFO
"rfkill switch %s: radio is %sblocked\n",
1304 name
, (sw_state
|| hw_state
) ? "" : "un");
1308 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id
)
1310 struct tpacpi_rfk
*tp_rfk
;
1312 BUG_ON(id
>= TPACPI_RFK_SW_MAX
);
1314 tp_rfk
= tpacpi_rfkill_switches
[id
];
1316 rfkill_unregister(tp_rfk
->rfkill
);
1317 rfkill_destroy(tp_rfk
->rfkill
);
1318 tpacpi_rfkill_switches
[id
] = NULL
;
1323 static void printk_deprecated_rfkill_attribute(const char * const what
)
1325 printk_deprecated_attribute(what
,
1326 "Please switch to generic rfkill before year 2010");
1329 /* sysfs <radio> enable ------------------------------------------------ */
1330 static ssize_t
tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id
,
1331 struct device_attribute
*attr
,
1336 printk_deprecated_rfkill_attribute(attr
->attr
.name
);
1338 /* This is in the ABI... */
1339 if (tpacpi_rfk_check_hwblock_state()) {
1340 status
= TPACPI_RFK_RADIO_OFF
;
1342 status
= tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[id
]);
1347 return snprintf(buf
, PAGE_SIZE
, "%d\n",
1348 (status
== TPACPI_RFK_RADIO_ON
) ? 1 : 0);
1351 static ssize_t
tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id
,
1352 struct device_attribute
*attr
,
1353 const char *buf
, size_t count
)
1358 printk_deprecated_rfkill_attribute(attr
->attr
.name
);
1360 if (parse_strtoul(buf
, 1, &t
))
1363 tpacpi_disclose_usertask(attr
->attr
.name
, "set to %ld\n", t
);
1365 /* This is in the ABI... */
1366 if (tpacpi_rfk_check_hwblock_state() && !!t
)
1369 res
= tpacpi_rfkill_switches
[id
]->ops
->set_status((!!t
) ?
1370 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
);
1371 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[id
]);
1373 return (res
< 0) ? res
: count
;
1376 /* procfs -------------------------------------------------------------- */
1377 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id
, struct seq_file
*m
)
1379 if (id
>= TPACPI_RFK_SW_MAX
)
1380 seq_printf(m
, "status:\t\tnot supported\n");
1384 /* This is in the ABI... */
1385 if (tpacpi_rfk_check_hwblock_state()) {
1386 status
= TPACPI_RFK_RADIO_OFF
;
1388 status
= tpacpi_rfk_update_swstate(
1389 tpacpi_rfkill_switches
[id
]);
1394 seq_printf(m
, "status:\t\t%s\n",
1395 (status
== TPACPI_RFK_RADIO_ON
) ?
1396 "enabled" : "disabled");
1397 seq_printf(m
, "commands:\tenable, disable\n");
1403 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id
, char *buf
)
1409 if (id
>= TPACPI_RFK_SW_MAX
)
1412 while ((cmd
= next_cmd(&buf
))) {
1413 if (strlencmp(cmd
, "enable") == 0)
1414 status
= TPACPI_RFK_RADIO_ON
;
1415 else if (strlencmp(cmd
, "disable") == 0)
1416 status
= TPACPI_RFK_RADIO_OFF
;
1422 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1423 (status
== TPACPI_RFK_RADIO_ON
) ?
1424 "enable" : "disable",
1425 tpacpi_rfkill_names
[id
]);
1426 res
= (tpacpi_rfkill_switches
[id
]->ops
->set_status
)(status
);
1427 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[id
]);
1433 /*************************************************************************
1434 * thinkpad-acpi driver attributes
1437 /* interface_version --------------------------------------------------- */
1438 static ssize_t
tpacpi_driver_interface_version_show(
1439 struct device_driver
*drv
,
1442 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", TPACPI_SYSFS_VERSION
);
1445 static DRIVER_ATTR(interface_version
, S_IRUGO
,
1446 tpacpi_driver_interface_version_show
, NULL
);
1448 /* debug_level --------------------------------------------------------- */
1449 static ssize_t
tpacpi_driver_debug_show(struct device_driver
*drv
,
1452 return snprintf(buf
, PAGE_SIZE
, "0x%04x\n", dbg_level
);
1455 static ssize_t
tpacpi_driver_debug_store(struct device_driver
*drv
,
1456 const char *buf
, size_t count
)
1460 if (parse_strtoul(buf
, 0xffff, &t
))
1468 static DRIVER_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
1469 tpacpi_driver_debug_show
, tpacpi_driver_debug_store
);
1471 /* version ------------------------------------------------------------- */
1472 static ssize_t
tpacpi_driver_version_show(struct device_driver
*drv
,
1475 return snprintf(buf
, PAGE_SIZE
, "%s v%s\n",
1476 TPACPI_DESC
, TPACPI_VERSION
);
1479 static DRIVER_ATTR(version
, S_IRUGO
,
1480 tpacpi_driver_version_show
, NULL
);
1482 /* --------------------------------------------------------------------- */
1484 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1486 /* wlsw_emulstate ------------------------------------------------------ */
1487 static ssize_t
tpacpi_driver_wlsw_emulstate_show(struct device_driver
*drv
,
1490 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_wlsw_emulstate
);
1493 static ssize_t
tpacpi_driver_wlsw_emulstate_store(struct device_driver
*drv
,
1494 const char *buf
, size_t count
)
1498 if (parse_strtoul(buf
, 1, &t
))
1501 if (tpacpi_wlsw_emulstate
!= !!t
) {
1502 tpacpi_wlsw_emulstate
= !!t
;
1503 tpacpi_rfk_update_hwblock_state(!t
); /* negative logic */
1509 static DRIVER_ATTR(wlsw_emulstate
, S_IWUSR
| S_IRUGO
,
1510 tpacpi_driver_wlsw_emulstate_show
,
1511 tpacpi_driver_wlsw_emulstate_store
);
1513 /* bluetooth_emulstate ------------------------------------------------- */
1514 static ssize_t
tpacpi_driver_bluetooth_emulstate_show(
1515 struct device_driver
*drv
,
1518 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_bluetooth_emulstate
);
1521 static ssize_t
tpacpi_driver_bluetooth_emulstate_store(
1522 struct device_driver
*drv
,
1523 const char *buf
, size_t count
)
1527 if (parse_strtoul(buf
, 1, &t
))
1530 tpacpi_bluetooth_emulstate
= !!t
;
1535 static DRIVER_ATTR(bluetooth_emulstate
, S_IWUSR
| S_IRUGO
,
1536 tpacpi_driver_bluetooth_emulstate_show
,
1537 tpacpi_driver_bluetooth_emulstate_store
);
1539 /* wwan_emulstate ------------------------------------------------- */
1540 static ssize_t
tpacpi_driver_wwan_emulstate_show(
1541 struct device_driver
*drv
,
1544 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_wwan_emulstate
);
1547 static ssize_t
tpacpi_driver_wwan_emulstate_store(
1548 struct device_driver
*drv
,
1549 const char *buf
, size_t count
)
1553 if (parse_strtoul(buf
, 1, &t
))
1556 tpacpi_wwan_emulstate
= !!t
;
1561 static DRIVER_ATTR(wwan_emulstate
, S_IWUSR
| S_IRUGO
,
1562 tpacpi_driver_wwan_emulstate_show
,
1563 tpacpi_driver_wwan_emulstate_store
);
1565 /* uwb_emulstate ------------------------------------------------- */
1566 static ssize_t
tpacpi_driver_uwb_emulstate_show(
1567 struct device_driver
*drv
,
1570 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_uwb_emulstate
);
1573 static ssize_t
tpacpi_driver_uwb_emulstate_store(
1574 struct device_driver
*drv
,
1575 const char *buf
, size_t count
)
1579 if (parse_strtoul(buf
, 1, &t
))
1582 tpacpi_uwb_emulstate
= !!t
;
1587 static DRIVER_ATTR(uwb_emulstate
, S_IWUSR
| S_IRUGO
,
1588 tpacpi_driver_uwb_emulstate_show
,
1589 tpacpi_driver_uwb_emulstate_store
);
1592 /* --------------------------------------------------------------------- */
1594 static struct driver_attribute
*tpacpi_driver_attributes
[] = {
1595 &driver_attr_debug_level
, &driver_attr_version
,
1596 &driver_attr_interface_version
,
1599 static int __init
tpacpi_create_driver_attributes(struct device_driver
*drv
)
1605 while (!res
&& i
< ARRAY_SIZE(tpacpi_driver_attributes
)) {
1606 res
= driver_create_file(drv
, tpacpi_driver_attributes
[i
]);
1610 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1611 if (!res
&& dbg_wlswemul
)
1612 res
= driver_create_file(drv
, &driver_attr_wlsw_emulstate
);
1613 if (!res
&& dbg_bluetoothemul
)
1614 res
= driver_create_file(drv
, &driver_attr_bluetooth_emulstate
);
1615 if (!res
&& dbg_wwanemul
)
1616 res
= driver_create_file(drv
, &driver_attr_wwan_emulstate
);
1617 if (!res
&& dbg_uwbemul
)
1618 res
= driver_create_file(drv
, &driver_attr_uwb_emulstate
);
1624 static void tpacpi_remove_driver_attributes(struct device_driver
*drv
)
1628 for (i
= 0; i
< ARRAY_SIZE(tpacpi_driver_attributes
); i
++)
1629 driver_remove_file(drv
, tpacpi_driver_attributes
[i
]);
1631 #ifdef THINKPAD_ACPI_DEBUGFACILITIES
1632 driver_remove_file(drv
, &driver_attr_wlsw_emulstate
);
1633 driver_remove_file(drv
, &driver_attr_bluetooth_emulstate
);
1634 driver_remove_file(drv
, &driver_attr_wwan_emulstate
);
1635 driver_remove_file(drv
, &driver_attr_uwb_emulstate
);
1639 /*************************************************************************
1644 * Table of recommended minimum BIOS versions
1646 * Reasons for listing:
1647 * 1. Stable BIOS, listed because the unknown amount of
1648 * bugs and bad ACPI behaviour on older versions
1650 * 2. BIOS or EC fw with known bugs that trigger on Linux
1652 * 3. BIOS with known reduced functionality in older versions
1654 * We recommend the latest BIOS and EC version.
1655 * We only support the latest BIOS and EC fw version as a rule.
1657 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1658 * Information from users in ThinkWiki
1660 * WARNING: we use this table also to detect that the machine is
1661 * a ThinkPad in some cases, so don't remove entries lightly.
1664 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1665 { .vendor = (__v), \
1666 .bios = TPID(__id1, __id2), \
1667 .ec = TPACPI_MATCH_ANY, \
1668 .quirks = TPACPI_MATCH_ANY << 16 \
1669 | (__bv1) << 8 | (__bv2) }
1671 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
1672 __eid, __ev1, __ev2) \
1673 { .vendor = (__v), \
1674 .bios = TPID(__bid1, __bid2), \
1676 .quirks = (__ev1) << 24 | (__ev2) << 16 \
1677 | (__bv1) << 8 | (__bv2) }
1679 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1680 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1682 /* Outdated IBM BIOSes often lack the EC id string */
1683 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1684 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1685 __bv1, __bv2, TPID(__id1, __id2), \
1687 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1688 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1691 /* Outdated IBM BIOSes often lack the EC id string */
1692 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1693 __eid1, __eid2, __ev1, __ev2) \
1694 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1695 __bv1, __bv2, TPID(__eid1, __eid2), \
1697 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1698 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1701 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1702 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1704 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1705 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
1706 __bv1, __bv2, TPID(__id1, __id2), \
1709 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1710 __eid1, __eid2, __ev1, __ev2) \
1711 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
1712 __bv1, __bv2, TPID(__eid1, __eid2), \
1715 static const struct tpacpi_quirk tpacpi_bios_version_qtable
[] __initconst
= {
1716 /* Numeric models ------------------ */
1717 /* FW MODEL BIOS VERS */
1718 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1719 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1720 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1721 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1722 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1723 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1724 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1725 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1726 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1728 /* A-series ------------------------- */
1729 /* FW MODEL BIOS VERS EC VERS */
1730 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1731 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1732 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1733 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1734 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1735 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1736 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1737 TPV_QI0('1', '3', '2', '0'), /* A22m */
1738 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1739 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1740 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1742 /* G-series ------------------------- */
1743 /* FW MODEL BIOS VERS */
1744 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1745 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1747 /* R-series, T-series --------------- */
1748 /* FW MODEL BIOS VERS EC VERS */
1749 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1750 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1751 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1752 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1753 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1754 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1755 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1756 T40/p, T41/p, T42/p (1) */
1757 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1758 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1759 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1760 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1762 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1763 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1764 TPV_QI0('1', '6', '3', '2'), /* T22 */
1765 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1766 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1767 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1769 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1770 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
1771 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
1773 /* BIOS FW BIOS VERS EC FW EC VERS */
1774 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1775 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1777 /* X-series ------------------------- */
1778 /* FW MODEL BIOS VERS EC VERS */
1779 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1780 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1781 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1782 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1783 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1784 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1785 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1787 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1788 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
1790 /* (0) - older versions lack DMI EC fw string and functionality */
1791 /* (1) - older versions known to lack functionality */
1802 static void __init
tpacpi_check_outdated_fw(void)
1804 unsigned long fwvers
;
1805 u16 ec_version
, bios_version
;
1807 fwvers
= tpacpi_check_quirks(tpacpi_bios_version_qtable
,
1808 ARRAY_SIZE(tpacpi_bios_version_qtable
));
1813 bios_version
= fwvers
& 0xffffU
;
1814 ec_version
= (fwvers
>> 16) & 0xffffU
;
1816 /* note that unknown versions are set to 0x0000 and we use that */
1817 if ((bios_version
> thinkpad_id
.bios_release
) ||
1818 (ec_version
> thinkpad_id
.ec_release
&&
1819 ec_version
!= TPACPI_MATCH_ANY
)) {
1821 * The changelogs would let us track down the exact
1822 * reason, but it is just too much of a pain to track
1823 * it. We only list BIOSes that are either really
1824 * broken, or really stable to begin with, so it is
1825 * best if the user upgrades the firmware anyway.
1828 "WARNING: Outdated ThinkPad BIOS/EC firmware\n");
1830 "WARNING: This firmware may be missing critical bug "
1831 "fixes and/or important features\n");
1835 static bool __init
tpacpi_is_fw_known(void)
1837 return tpacpi_check_quirks(tpacpi_bios_version_qtable
,
1838 ARRAY_SIZE(tpacpi_bios_version_qtable
)) != 0;
1841 /****************************************************************************
1842 ****************************************************************************
1846 ****************************************************************************
1847 ****************************************************************************/
1849 /*************************************************************************
1850 * thinkpad-acpi metadata subdriver
1853 static int thinkpad_acpi_driver_read(struct seq_file
*m
)
1855 seq_printf(m
, "driver:\t\t%s\n", TPACPI_DESC
);
1856 seq_printf(m
, "version:\t%s\n", TPACPI_VERSION
);
1860 static struct ibm_struct thinkpad_acpi_driver_data
= {
1862 .read
= thinkpad_acpi_driver_read
,
1865 /*************************************************************************
1870 * ThinkPad firmware event model
1872 * The ThinkPad firmware has two main event interfaces: normal ACPI
1873 * notifications (which follow the ACPI standard), and a private event
1876 * The private event interface also issues events for the hotkeys. As
1877 * the driver gained features, the event handling code ended up being
1878 * built around the hotkey subdriver. This will need to be refactored
1879 * to a more formal event API eventually.
1881 * Some "hotkeys" are actually supposed to be used as event reports,
1882 * such as "brightness has changed", "volume has changed", depending on
1883 * the ThinkPad model and how the firmware is operating.
1885 * Unlike other classes, hotkey-class events have mask/unmask control on
1886 * non-ancient firmware. However, how it behaves changes a lot with the
1887 * firmware model and version.
1890 enum { /* hot key scan codes (derived from ACPI DSDT) */
1891 TP_ACPI_HOTKEYSCAN_FNF1
= 0,
1892 TP_ACPI_HOTKEYSCAN_FNF2
,
1893 TP_ACPI_HOTKEYSCAN_FNF3
,
1894 TP_ACPI_HOTKEYSCAN_FNF4
,
1895 TP_ACPI_HOTKEYSCAN_FNF5
,
1896 TP_ACPI_HOTKEYSCAN_FNF6
,
1897 TP_ACPI_HOTKEYSCAN_FNF7
,
1898 TP_ACPI_HOTKEYSCAN_FNF8
,
1899 TP_ACPI_HOTKEYSCAN_FNF9
,
1900 TP_ACPI_HOTKEYSCAN_FNF10
,
1901 TP_ACPI_HOTKEYSCAN_FNF11
,
1902 TP_ACPI_HOTKEYSCAN_FNF12
,
1903 TP_ACPI_HOTKEYSCAN_FNBACKSPACE
,
1904 TP_ACPI_HOTKEYSCAN_FNINSERT
,
1905 TP_ACPI_HOTKEYSCAN_FNDELETE
,
1906 TP_ACPI_HOTKEYSCAN_FNHOME
,
1907 TP_ACPI_HOTKEYSCAN_FNEND
,
1908 TP_ACPI_HOTKEYSCAN_FNPAGEUP
,
1909 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN
,
1910 TP_ACPI_HOTKEYSCAN_FNSPACE
,
1911 TP_ACPI_HOTKEYSCAN_VOLUMEUP
,
1912 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
,
1913 TP_ACPI_HOTKEYSCAN_MUTE
,
1914 TP_ACPI_HOTKEYSCAN_THINKPAD
,
1917 enum { /* Keys/events available through NVRAM polling */
1918 TPACPI_HKEY_NVRAM_KNOWN_MASK
= 0x00fb88c0U
,
1919 TPACPI_HKEY_NVRAM_GOOD_MASK
= 0x00fb8000U
,
1922 enum { /* Positions of some of the keys in hotkey masks */
1923 TP_ACPI_HKEY_DISPSWTCH_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF7
,
1924 TP_ACPI_HKEY_DISPXPAND_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF8
,
1925 TP_ACPI_HKEY_HIBERNATE_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF12
,
1926 TP_ACPI_HKEY_BRGHTUP_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNHOME
,
1927 TP_ACPI_HKEY_BRGHTDWN_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNEND
,
1928 TP_ACPI_HKEY_THNKLGHT_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP
,
1929 TP_ACPI_HKEY_ZOOM_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNSPACE
,
1930 TP_ACPI_HKEY_VOLUP_MASK
= 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP
,
1931 TP_ACPI_HKEY_VOLDWN_MASK
= 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
,
1932 TP_ACPI_HKEY_MUTE_MASK
= 1 << TP_ACPI_HOTKEYSCAN_MUTE
,
1933 TP_ACPI_HKEY_THINKPAD_MASK
= 1 << TP_ACPI_HOTKEYSCAN_THINKPAD
,
1936 enum { /* NVRAM to ACPI HKEY group map */
1937 TP_NVRAM_HKEY_GROUP_HK2
= TP_ACPI_HKEY_THINKPAD_MASK
|
1938 TP_ACPI_HKEY_ZOOM_MASK
|
1939 TP_ACPI_HKEY_DISPSWTCH_MASK
|
1940 TP_ACPI_HKEY_HIBERNATE_MASK
,
1941 TP_NVRAM_HKEY_GROUP_BRIGHTNESS
= TP_ACPI_HKEY_BRGHTUP_MASK
|
1942 TP_ACPI_HKEY_BRGHTDWN_MASK
,
1943 TP_NVRAM_HKEY_GROUP_VOLUME
= TP_ACPI_HKEY_VOLUP_MASK
|
1944 TP_ACPI_HKEY_VOLDWN_MASK
|
1945 TP_ACPI_HKEY_MUTE_MASK
,
1948 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1949 struct tp_nvram_state
{
1950 u16 thinkpad_toggle
:1;
1952 u16 display_toggle
:1;
1953 u16 thinklight_toggle
:1;
1954 u16 hibernate_toggle
:1;
1955 u16 displayexp_toggle
:1;
1956 u16 display_state
:1;
1957 u16 brightness_toggle
:1;
1958 u16 volume_toggle
:1;
1961 u8 brightness_level
;
1965 /* kthread for the hotkey poller */
1966 static struct task_struct
*tpacpi_hotkey_task
;
1968 /* Acquired while the poller kthread is running, use to sync start/stop */
1969 static struct mutex hotkey_thread_mutex
;
1972 * Acquire mutex to write poller control variables as an
1975 * Increment hotkey_config_change when changing them if you
1976 * want the kthread to forget old state.
1978 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1980 static struct mutex hotkey_thread_data_mutex
;
1981 static unsigned int hotkey_config_change
;
1984 * hotkey poller control variables
1986 * Must be atomic or readers will also need to acquire mutex
1988 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1989 * should be used only when the changes need to be taken as
1990 * a block, OR when one needs to force the kthread to forget
1993 static u32 hotkey_source_mask
; /* bit mask 0=ACPI,1=NVRAM */
1994 static unsigned int hotkey_poll_freq
= 10; /* Hz */
1996 #define HOTKEY_CONFIG_CRITICAL_START \
1998 mutex_lock(&hotkey_thread_data_mutex); \
1999 hotkey_config_change++; \
2001 #define HOTKEY_CONFIG_CRITICAL_END \
2002 mutex_unlock(&hotkey_thread_data_mutex);
2004 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2006 #define hotkey_source_mask 0U
2007 #define HOTKEY_CONFIG_CRITICAL_START
2008 #define HOTKEY_CONFIG_CRITICAL_END
2010 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2012 static struct mutex hotkey_mutex
;
2014 static enum { /* Reasons for waking up */
2015 TP_ACPI_WAKEUP_NONE
= 0, /* None or unknown */
2016 TP_ACPI_WAKEUP_BAYEJ
, /* Bay ejection request */
2017 TP_ACPI_WAKEUP_UNDOCK
, /* Undock request */
2018 } hotkey_wakeup_reason
;
2020 static int hotkey_autosleep_ack
;
2022 static u32 hotkey_orig_mask
; /* events the BIOS had enabled */
2023 static u32 hotkey_all_mask
; /* all events supported in fw */
2024 static u32 hotkey_reserved_mask
; /* events better left disabled */
2025 static u32 hotkey_driver_mask
; /* events needed by the driver */
2026 static u32 hotkey_user_mask
; /* events visible to userspace */
2027 static u32 hotkey_acpi_mask
; /* events enabled in firmware */
2029 static unsigned int hotkey_report_mode
;
2031 static u16
*hotkey_keycode_map
;
2033 static struct attribute_set
*hotkey_dev_attributes
;
2035 static void tpacpi_driver_event(const unsigned int hkey_event
);
2036 static void hotkey_driver_event(const unsigned int scancode
);
2037 static void hotkey_poll_setup(const bool may_warn
);
2039 /* HKEY.MHKG() return bits */
2040 #define TP_HOTKEY_TABLET_MASK (1 << 3)
2042 static int hotkey_get_wlsw(void)
2046 if (!tp_features
.hotkey_wlsw
)
2049 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
2051 return (tpacpi_wlsw_emulstate
) ?
2052 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
2055 if (!acpi_evalf(hkey_handle
, &status
, "WLSW", "d"))
2058 return (status
) ? TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
2061 static int hotkey_get_tablet_mode(int *status
)
2065 if (!acpi_evalf(hkey_handle
, &s
, "MHKG", "d"))
2068 *status
= ((s
& TP_HOTKEY_TABLET_MASK
) != 0);
2073 * Reads current event mask from firmware, and updates
2074 * hotkey_acpi_mask accordingly. Also resets any bits
2075 * from hotkey_user_mask that are unavailable to be
2076 * delivered (shadow requirement of the userspace ABI).
2078 * Call with hotkey_mutex held
2080 static int hotkey_mask_get(void)
2082 if (tp_features
.hotkey_mask
) {
2085 if (!acpi_evalf(hkey_handle
, &m
, "DHKN", "d"))
2088 hotkey_acpi_mask
= m
;
2090 /* no mask support doesn't mean no event support... */
2091 hotkey_acpi_mask
= hotkey_all_mask
;
2094 /* sync userspace-visible mask */
2095 hotkey_user_mask
&= (hotkey_acpi_mask
| hotkey_source_mask
);
2100 void static hotkey_mask_warn_incomplete_mask(void)
2102 /* log only what the user can fix... */
2103 const u32 wantedmask
= hotkey_driver_mask
&
2104 ~(hotkey_acpi_mask
| hotkey_source_mask
) &
2105 (hotkey_all_mask
| TPACPI_HKEY_NVRAM_KNOWN_MASK
);
2108 printk(TPACPI_NOTICE
2109 "required events 0x%08x not enabled!\n",
2114 * Set the firmware mask when supported
2116 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
2118 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
2120 * Call with hotkey_mutex held
2122 static int hotkey_mask_set(u32 mask
)
2127 const u32 fwmask
= mask
& ~hotkey_source_mask
;
2129 if (tp_features
.hotkey_mask
) {
2130 for (i
= 0; i
< 32; i
++) {
2131 if (!acpi_evalf(hkey_handle
,
2132 NULL
, "MHKM", "vdd", i
+ 1,
2133 !!(mask
& (1 << i
)))) {
2141 * We *must* make an inconditional call to hotkey_mask_get to
2142 * refresh hotkey_acpi_mask and update hotkey_user_mask
2144 * Take the opportunity to also log when we cannot _enable_
2147 if (!hotkey_mask_get() && !rc
&& (fwmask
& ~hotkey_acpi_mask
)) {
2148 printk(TPACPI_NOTICE
2149 "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 printk(TPACPI_NOTICE
2176 "setting the hotkey mask to 0x%08x is likely "
2177 "not the best way to go about it\n", mask
);
2178 printk(TPACPI_NOTICE
2179 "please consider using the driver defaults, "
2180 "and refer to up-to-date thinkpad-acpi "
2184 /* Try to enable what the user asked for, plus whatever we need.
2185 * this syncs everything but won't enable bits in hotkey_user_mask */
2186 rc
= hotkey_mask_set((mask
| hotkey_driver_mask
) & ~hotkey_source_mask
);
2188 /* Enable the available bits in hotkey_user_mask */
2189 hotkey_user_mask
= mask
& (hotkey_acpi_mask
| hotkey_source_mask
);
2195 * Sets the driver hotkey mask.
2197 * Can be called even if the hotkey subdriver is inactive
2199 static int tpacpi_hotkey_driver_mask_set(const u32 mask
)
2203 /* Do the right thing if hotkey_init has not been called yet */
2204 if (!tp_features
.hotkey
) {
2205 hotkey_driver_mask
= mask
;
2209 mutex_lock(&hotkey_mutex
);
2211 HOTKEY_CONFIG_CRITICAL_START
2212 hotkey_driver_mask
= mask
;
2213 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2214 hotkey_source_mask
|= (mask
& ~hotkey_all_mask
);
2216 HOTKEY_CONFIG_CRITICAL_END
2218 rc
= hotkey_mask_set((hotkey_acpi_mask
| hotkey_driver_mask
) &
2219 ~hotkey_source_mask
);
2220 hotkey_poll_setup(true);
2222 mutex_unlock(&hotkey_mutex
);
2227 static int hotkey_status_get(int *status
)
2229 if (!acpi_evalf(hkey_handle
, status
, "DHKC", "d"))
2235 static int hotkey_status_set(bool enable
)
2237 if (!acpi_evalf(hkey_handle
, NULL
, "MHKC", "vd", enable
? 1 : 0))
2243 static void tpacpi_input_send_tabletsw(void)
2247 if (tp_features
.hotkey_tablet
&&
2248 !hotkey_get_tablet_mode(&state
)) {
2249 mutex_lock(&tpacpi_inputdev_send_mutex
);
2251 input_report_switch(tpacpi_inputdev
,
2252 SW_TABLET_MODE
, !!state
);
2253 input_sync(tpacpi_inputdev
);
2255 mutex_unlock(&tpacpi_inputdev_send_mutex
);
2259 /* Do NOT call without validating scancode first */
2260 static void tpacpi_input_send_key(const unsigned int scancode
)
2262 const unsigned int keycode
= hotkey_keycode_map
[scancode
];
2264 if (keycode
!= KEY_RESERVED
) {
2265 mutex_lock(&tpacpi_inputdev_send_mutex
);
2267 input_report_key(tpacpi_inputdev
, keycode
, 1);
2268 if (keycode
== KEY_UNKNOWN
)
2269 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
,
2271 input_sync(tpacpi_inputdev
);
2273 input_report_key(tpacpi_inputdev
, keycode
, 0);
2274 if (keycode
== KEY_UNKNOWN
)
2275 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
,
2277 input_sync(tpacpi_inputdev
);
2279 mutex_unlock(&tpacpi_inputdev_send_mutex
);
2283 /* Do NOT call without validating scancode first */
2284 static void tpacpi_input_send_key_masked(const unsigned int scancode
)
2286 hotkey_driver_event(scancode
);
2287 if (hotkey_user_mask
& (1 << scancode
))
2288 tpacpi_input_send_key(scancode
);
2291 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2292 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
;
2294 /* Do NOT call without validating scancode first */
2295 static void tpacpi_hotkey_send_key(unsigned int scancode
)
2297 tpacpi_input_send_key_masked(scancode
);
2298 if (hotkey_report_mode
< 2) {
2299 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver
.device
,
2300 0x80, TP_HKEY_EV_HOTKEY_BASE
+ scancode
);
2304 static void hotkey_read_nvram(struct tp_nvram_state
*n
, const u32 m
)
2308 if (m
& TP_NVRAM_HKEY_GROUP_HK2
) {
2309 d
= nvram_read_byte(TP_NVRAM_ADDR_HK2
);
2310 n
->thinkpad_toggle
= !!(d
& TP_NVRAM_MASK_HKT_THINKPAD
);
2311 n
->zoom_toggle
= !!(d
& TP_NVRAM_MASK_HKT_ZOOM
);
2312 n
->display_toggle
= !!(d
& TP_NVRAM_MASK_HKT_DISPLAY
);
2313 n
->hibernate_toggle
= !!(d
& TP_NVRAM_MASK_HKT_HIBERNATE
);
2315 if (m
& TP_ACPI_HKEY_THNKLGHT_MASK
) {
2316 d
= nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT
);
2317 n
->thinklight_toggle
= !!(d
& TP_NVRAM_MASK_THINKLIGHT
);
2319 if (m
& TP_ACPI_HKEY_DISPXPAND_MASK
) {
2320 d
= nvram_read_byte(TP_NVRAM_ADDR_VIDEO
);
2321 n
->displayexp_toggle
=
2322 !!(d
& TP_NVRAM_MASK_HKT_DISPEXPND
);
2324 if (m
& TP_NVRAM_HKEY_GROUP_BRIGHTNESS
) {
2325 d
= nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
);
2326 n
->brightness_level
= (d
& TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
2327 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
2328 n
->brightness_toggle
=
2329 !!(d
& TP_NVRAM_MASK_HKT_BRIGHTNESS
);
2331 if (m
& TP_NVRAM_HKEY_GROUP_VOLUME
) {
2332 d
= nvram_read_byte(TP_NVRAM_ADDR_MIXER
);
2333 n
->volume_level
= (d
& TP_NVRAM_MASK_LEVEL_VOLUME
)
2334 >> TP_NVRAM_POS_LEVEL_VOLUME
;
2335 n
->mute
= !!(d
& TP_NVRAM_MASK_MUTE
);
2336 n
->volume_toggle
= !!(d
& TP_NVRAM_MASK_HKT_VOLUME
);
2340 static void hotkey_compare_and_issue_event(struct tp_nvram_state
*oldn
,
2341 struct tp_nvram_state
*newn
,
2342 const u32 event_mask
)
2345 #define TPACPI_COMPARE_KEY(__scancode, __member) \
2347 if ((event_mask & (1 << __scancode)) && \
2348 oldn->__member != newn->__member) \
2349 tpacpi_hotkey_send_key(__scancode); \
2352 #define TPACPI_MAY_SEND_KEY(__scancode) \
2354 if (event_mask & (1 << __scancode)) \
2355 tpacpi_hotkey_send_key(__scancode); \
2358 void issue_volchange(const unsigned int oldvol
,
2359 const unsigned int newvol
)
2361 unsigned int i
= oldvol
;
2363 while (i
> newvol
) {
2364 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
2367 while (i
< newvol
) {
2368 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
2373 void issue_brightnesschange(const unsigned int oldbrt
,
2374 const unsigned int newbrt
)
2376 unsigned int i
= oldbrt
;
2378 while (i
> newbrt
) {
2379 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
2382 while (i
< newbrt
) {
2383 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
2388 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD
, thinkpad_toggle
);
2389 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE
, zoom_toggle
);
2390 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7
, display_toggle
);
2391 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12
, hibernate_toggle
);
2393 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP
, thinklight_toggle
);
2395 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8
, displayexp_toggle
);
2400 * This code is supposed to duplicate the IBM firmware behaviour:
2401 * - Pressing MUTE issues mute hotkey message, even when already mute
2402 * - Pressing Volume up/down issues volume up/down hotkey messages,
2403 * even when already at maximum or minumum volume
2404 * - The act of unmuting issues volume up/down notification,
2405 * depending which key was used to unmute
2407 * We are constrained to what the NVRAM can tell us, which is not much
2408 * and certainly not enough if more than one volume hotkey was pressed
2409 * since the last poll cycle.
2411 * Just to make our life interesting, some newer Lenovo ThinkPads have
2412 * bugs in the BIOS and may fail to update volume_toggle properly.
2417 oldn
->volume_toggle
!= newn
->volume_toggle
||
2418 oldn
->volume_level
!= newn
->volume_level
) {
2419 /* recently muted, or repeated mute keypress, or
2420 * multiple presses ending in mute */
2421 issue_volchange(oldn
->volume_level
, newn
->volume_level
);
2422 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE
);
2427 /* recently unmuted, issue 'unmute' keypress */
2428 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
2430 if (oldn
->volume_level
!= newn
->volume_level
) {
2431 issue_volchange(oldn
->volume_level
, newn
->volume_level
);
2432 } else if (oldn
->volume_toggle
!= newn
->volume_toggle
) {
2433 /* repeated vol up/down keypress at end of scale ? */
2434 if (newn
->volume_level
== 0)
2435 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
2436 else if (newn
->volume_level
>= TP_NVRAM_LEVEL_VOLUME_MAX
)
2437 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
2441 /* handle brightness */
2442 if (oldn
->brightness_level
!= newn
->brightness_level
) {
2443 issue_brightnesschange(oldn
->brightness_level
,
2444 newn
->brightness_level
);
2445 } else if (oldn
->brightness_toggle
!= newn
->brightness_toggle
) {
2446 /* repeated key presses that didn't change state */
2447 if (newn
->brightness_level
== 0)
2448 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
2449 else if (newn
->brightness_level
>= bright_maxlvl
2450 && !tp_features
.bright_unkfw
)
2451 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
2454 #undef TPACPI_COMPARE_KEY
2455 #undef TPACPI_MAY_SEND_KEY
2461 * We track all events in hotkey_source_mask all the time, since
2462 * most of them are edge-based. We only issue those requested by
2463 * hotkey_user_mask or hotkey_driver_mask, though.
2465 static int hotkey_kthread(void *data
)
2467 struct tp_nvram_state s
[2];
2468 u32 poll_mask
, event_mask
;
2469 unsigned int si
, so
;
2471 unsigned int change_detector
, must_reset
;
2472 unsigned int poll_freq
;
2474 mutex_lock(&hotkey_thread_mutex
);
2476 if (tpacpi_lifecycle
== TPACPI_LIFE_EXITING
)
2485 /* Initial state for compares */
2486 mutex_lock(&hotkey_thread_data_mutex
);
2487 change_detector
= hotkey_config_change
;
2488 poll_mask
= hotkey_source_mask
;
2489 event_mask
= hotkey_source_mask
&
2490 (hotkey_driver_mask
| hotkey_user_mask
);
2491 poll_freq
= hotkey_poll_freq
;
2492 mutex_unlock(&hotkey_thread_data_mutex
);
2493 hotkey_read_nvram(&s
[so
], poll_mask
);
2495 while (!kthread_should_stop()) {
2497 if (likely(poll_freq
))
2500 t
= 100; /* should never happen... */
2502 t
= msleep_interruptible(t
);
2503 if (unlikely(kthread_should_stop()))
2505 must_reset
= try_to_freeze();
2506 if (t
> 0 && !must_reset
)
2509 mutex_lock(&hotkey_thread_data_mutex
);
2510 if (must_reset
|| hotkey_config_change
!= change_detector
) {
2511 /* forget old state on thaw or config change */
2514 change_detector
= hotkey_config_change
;
2516 poll_mask
= hotkey_source_mask
;
2517 event_mask
= hotkey_source_mask
&
2518 (hotkey_driver_mask
| hotkey_user_mask
);
2519 poll_freq
= hotkey_poll_freq
;
2520 mutex_unlock(&hotkey_thread_data_mutex
);
2522 if (likely(poll_mask
)) {
2523 hotkey_read_nvram(&s
[si
], poll_mask
);
2524 if (likely(si
!= so
)) {
2525 hotkey_compare_and_issue_event(&s
[so
], &s
[si
],
2535 mutex_unlock(&hotkey_thread_mutex
);
2539 /* call with hotkey_mutex held */
2540 static void hotkey_poll_stop_sync(void)
2542 if (tpacpi_hotkey_task
) {
2543 if (frozen(tpacpi_hotkey_task
) ||
2544 freezing(tpacpi_hotkey_task
))
2545 thaw_process(tpacpi_hotkey_task
);
2547 kthread_stop(tpacpi_hotkey_task
);
2548 tpacpi_hotkey_task
= NULL
;
2549 mutex_lock(&hotkey_thread_mutex
);
2550 /* at this point, the thread did exit */
2551 mutex_unlock(&hotkey_thread_mutex
);
2555 /* call with hotkey_mutex held */
2556 static void hotkey_poll_setup(const bool may_warn
)
2558 const u32 poll_driver_mask
= hotkey_driver_mask
& hotkey_source_mask
;
2559 const u32 poll_user_mask
= hotkey_user_mask
& hotkey_source_mask
;
2561 if (hotkey_poll_freq
> 0 &&
2562 (poll_driver_mask
||
2563 (poll_user_mask
&& tpacpi_inputdev
->users
> 0))) {
2564 if (!tpacpi_hotkey_task
) {
2565 tpacpi_hotkey_task
= kthread_run(hotkey_kthread
,
2566 NULL
, TPACPI_NVRAM_KTHREAD_NAME
);
2567 if (IS_ERR(tpacpi_hotkey_task
)) {
2568 tpacpi_hotkey_task
= NULL
;
2570 "could not create kernel thread "
2571 "for hotkey polling\n");
2575 hotkey_poll_stop_sync();
2576 if (may_warn
&& (poll_driver_mask
|| poll_user_mask
) &&
2577 hotkey_poll_freq
== 0) {
2578 printk(TPACPI_NOTICE
2579 "hot keys 0x%08x and/or events 0x%08x "
2580 "require polling, which is currently "
2582 poll_user_mask
, poll_driver_mask
);
2587 static void hotkey_poll_setup_safe(const bool may_warn
)
2589 mutex_lock(&hotkey_mutex
);
2590 hotkey_poll_setup(may_warn
);
2591 mutex_unlock(&hotkey_mutex
);
2594 /* call with hotkey_mutex held */
2595 static void hotkey_poll_set_freq(unsigned int freq
)
2598 hotkey_poll_stop_sync();
2600 hotkey_poll_freq
= freq
;
2603 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2605 static void hotkey_poll_setup(const bool __unused
)
2609 static void hotkey_poll_setup_safe(const bool __unused
)
2613 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2615 static int hotkey_inputdev_open(struct input_dev
*dev
)
2617 switch (tpacpi_lifecycle
) {
2618 case TPACPI_LIFE_INIT
:
2619 case TPACPI_LIFE_RUNNING
:
2620 hotkey_poll_setup_safe(false);
2622 case TPACPI_LIFE_EXITING
:
2626 /* Should only happen if tpacpi_lifecycle is corrupt */
2631 static void hotkey_inputdev_close(struct input_dev
*dev
)
2633 /* disable hotkey polling when possible */
2634 if (tpacpi_lifecycle
!= TPACPI_LIFE_EXITING
&&
2635 !(hotkey_source_mask
& hotkey_driver_mask
))
2636 hotkey_poll_setup_safe(false);
2639 /* sysfs hotkey enable ------------------------------------------------- */
2640 static ssize_t
hotkey_enable_show(struct device
*dev
,
2641 struct device_attribute
*attr
,
2646 printk_deprecated_attribute("hotkey_enable",
2647 "Hotkey reporting is always enabled");
2649 res
= hotkey_status_get(&status
);
2653 return snprintf(buf
, PAGE_SIZE
, "%d\n", status
);
2656 static ssize_t
hotkey_enable_store(struct device
*dev
,
2657 struct device_attribute
*attr
,
2658 const char *buf
, size_t count
)
2662 printk_deprecated_attribute("hotkey_enable",
2663 "Hotkeys can be disabled through hotkey_mask");
2665 if (parse_strtoul(buf
, 1, &t
))
2674 static struct device_attribute dev_attr_hotkey_enable
=
2675 __ATTR(hotkey_enable
, S_IWUSR
| S_IRUGO
,
2676 hotkey_enable_show
, hotkey_enable_store
);
2678 /* sysfs hotkey mask --------------------------------------------------- */
2679 static ssize_t
hotkey_mask_show(struct device
*dev
,
2680 struct device_attribute
*attr
,
2683 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_user_mask
);
2686 static ssize_t
hotkey_mask_store(struct device
*dev
,
2687 struct device_attribute
*attr
,
2688 const char *buf
, size_t count
)
2693 if (parse_strtoul(buf
, 0xffffffffUL
, &t
))
2696 if (mutex_lock_killable(&hotkey_mutex
))
2697 return -ERESTARTSYS
;
2699 res
= hotkey_user_mask_set(t
);
2701 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2702 hotkey_poll_setup(true);
2705 mutex_unlock(&hotkey_mutex
);
2707 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t
);
2709 return (res
) ? res
: count
;
2712 static struct device_attribute dev_attr_hotkey_mask
=
2713 __ATTR(hotkey_mask
, S_IWUSR
| S_IRUGO
,
2714 hotkey_mask_show
, hotkey_mask_store
);
2716 /* sysfs hotkey bios_enabled ------------------------------------------- */
2717 static ssize_t
hotkey_bios_enabled_show(struct device
*dev
,
2718 struct device_attribute
*attr
,
2721 return sprintf(buf
, "0\n");
2724 static struct device_attribute dev_attr_hotkey_bios_enabled
=
2725 __ATTR(hotkey_bios_enabled
, S_IRUGO
, hotkey_bios_enabled_show
, NULL
);
2727 /* sysfs hotkey bios_mask ---------------------------------------------- */
2728 static ssize_t
hotkey_bios_mask_show(struct device
*dev
,
2729 struct device_attribute
*attr
,
2732 printk_deprecated_attribute("hotkey_bios_mask",
2733 "This attribute is useless.");
2734 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_orig_mask
);
2737 static struct device_attribute dev_attr_hotkey_bios_mask
=
2738 __ATTR(hotkey_bios_mask
, S_IRUGO
, hotkey_bios_mask_show
, NULL
);
2740 /* sysfs hotkey all_mask ----------------------------------------------- */
2741 static ssize_t
hotkey_all_mask_show(struct device
*dev
,
2742 struct device_attribute
*attr
,
2745 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
2746 hotkey_all_mask
| hotkey_source_mask
);
2749 static struct device_attribute dev_attr_hotkey_all_mask
=
2750 __ATTR(hotkey_all_mask
, S_IRUGO
, hotkey_all_mask_show
, NULL
);
2752 /* sysfs hotkey recommended_mask --------------------------------------- */
2753 static ssize_t
hotkey_recommended_mask_show(struct device
*dev
,
2754 struct device_attribute
*attr
,
2757 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
2758 (hotkey_all_mask
| hotkey_source_mask
)
2759 & ~hotkey_reserved_mask
);
2762 static struct device_attribute dev_attr_hotkey_recommended_mask
=
2763 __ATTR(hotkey_recommended_mask
, S_IRUGO
,
2764 hotkey_recommended_mask_show
, NULL
);
2766 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2768 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
2769 static ssize_t
hotkey_source_mask_show(struct device
*dev
,
2770 struct device_attribute
*attr
,
2773 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_source_mask
);
2776 static ssize_t
hotkey_source_mask_store(struct device
*dev
,
2777 struct device_attribute
*attr
,
2778 const char *buf
, size_t count
)
2784 if (parse_strtoul(buf
, 0xffffffffUL
, &t
) ||
2785 ((t
& ~TPACPI_HKEY_NVRAM_KNOWN_MASK
) != 0))
2788 if (mutex_lock_killable(&hotkey_mutex
))
2789 return -ERESTARTSYS
;
2791 HOTKEY_CONFIG_CRITICAL_START
2792 hotkey_source_mask
= t
;
2793 HOTKEY_CONFIG_CRITICAL_END
2795 rc
= hotkey_mask_set((hotkey_user_mask
| hotkey_driver_mask
) &
2796 ~hotkey_source_mask
);
2797 hotkey_poll_setup(true);
2799 /* check if events needed by the driver got disabled */
2800 r_ev
= hotkey_driver_mask
& ~(hotkey_acpi_mask
& hotkey_all_mask
)
2801 & ~hotkey_source_mask
& TPACPI_HKEY_NVRAM_KNOWN_MASK
;
2803 mutex_unlock(&hotkey_mutex
);
2806 printk(TPACPI_ERR
"hotkey_source_mask: failed to update the"
2807 "firmware event mask!\n");
2810 printk(TPACPI_NOTICE
"hotkey_source_mask: "
2811 "some important events were disabled: "
2814 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t
);
2816 return (rc
< 0) ? rc
: count
;
2819 static struct device_attribute dev_attr_hotkey_source_mask
=
2820 __ATTR(hotkey_source_mask
, S_IWUSR
| S_IRUGO
,
2821 hotkey_source_mask_show
, hotkey_source_mask_store
);
2823 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2824 static ssize_t
hotkey_poll_freq_show(struct device
*dev
,
2825 struct device_attribute
*attr
,
2828 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_poll_freq
);
2831 static ssize_t
hotkey_poll_freq_store(struct device
*dev
,
2832 struct device_attribute
*attr
,
2833 const char *buf
, size_t count
)
2837 if (parse_strtoul(buf
, 25, &t
))
2840 if (mutex_lock_killable(&hotkey_mutex
))
2841 return -ERESTARTSYS
;
2843 hotkey_poll_set_freq(t
);
2844 hotkey_poll_setup(true);
2846 mutex_unlock(&hotkey_mutex
);
2848 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t
);
2853 static struct device_attribute dev_attr_hotkey_poll_freq
=
2854 __ATTR(hotkey_poll_freq
, S_IWUSR
| S_IRUGO
,
2855 hotkey_poll_freq_show
, hotkey_poll_freq_store
);
2857 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2859 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
2860 static ssize_t
hotkey_radio_sw_show(struct device
*dev
,
2861 struct device_attribute
*attr
,
2865 res
= hotkey_get_wlsw();
2869 /* Opportunistic update */
2870 tpacpi_rfk_update_hwblock_state((res
== TPACPI_RFK_RADIO_OFF
));
2872 return snprintf(buf
, PAGE_SIZE
, "%d\n",
2873 (res
== TPACPI_RFK_RADIO_OFF
) ? 0 : 1);
2876 static struct device_attribute dev_attr_hotkey_radio_sw
=
2877 __ATTR(hotkey_radio_sw
, S_IRUGO
, hotkey_radio_sw_show
, NULL
);
2879 static void hotkey_radio_sw_notify_change(void)
2881 if (tp_features
.hotkey_wlsw
)
2882 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2886 /* sysfs hotkey tablet mode (pollable) --------------------------------- */
2887 static ssize_t
hotkey_tablet_mode_show(struct device
*dev
,
2888 struct device_attribute
*attr
,
2892 res
= hotkey_get_tablet_mode(&s
);
2896 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!s
);
2899 static struct device_attribute dev_attr_hotkey_tablet_mode
=
2900 __ATTR(hotkey_tablet_mode
, S_IRUGO
, hotkey_tablet_mode_show
, NULL
);
2902 static void hotkey_tablet_mode_notify_change(void)
2904 if (tp_features
.hotkey_tablet
)
2905 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2906 "hotkey_tablet_mode");
2909 /* sysfs hotkey report_mode -------------------------------------------- */
2910 static ssize_t
hotkey_report_mode_show(struct device
*dev
,
2911 struct device_attribute
*attr
,
2914 return snprintf(buf
, PAGE_SIZE
, "%d\n",
2915 (hotkey_report_mode
!= 0) ? hotkey_report_mode
: 1);
2918 static struct device_attribute dev_attr_hotkey_report_mode
=
2919 __ATTR(hotkey_report_mode
, S_IRUGO
, hotkey_report_mode_show
, NULL
);
2921 /* sysfs wakeup reason (pollable) -------------------------------------- */
2922 static ssize_t
hotkey_wakeup_reason_show(struct device
*dev
,
2923 struct device_attribute
*attr
,
2926 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_wakeup_reason
);
2929 static struct device_attribute dev_attr_hotkey_wakeup_reason
=
2930 __ATTR(wakeup_reason
, S_IRUGO
, hotkey_wakeup_reason_show
, NULL
);
2932 static void hotkey_wakeup_reason_notify_change(void)
2934 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2938 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
2939 static ssize_t
hotkey_wakeup_hotunplug_complete_show(struct device
*dev
,
2940 struct device_attribute
*attr
,
2943 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_autosleep_ack
);
2946 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete
=
2947 __ATTR(wakeup_hotunplug_complete
, S_IRUGO
,
2948 hotkey_wakeup_hotunplug_complete_show
, NULL
);
2950 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
2952 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2953 "wakeup_hotunplug_complete");
2956 /* --------------------------------------------------------------------- */
2958 static struct attribute
*hotkey_attributes
[] __initdata
= {
2959 &dev_attr_hotkey_enable
.attr
,
2960 &dev_attr_hotkey_bios_enabled
.attr
,
2961 &dev_attr_hotkey_bios_mask
.attr
,
2962 &dev_attr_hotkey_report_mode
.attr
,
2963 &dev_attr_hotkey_wakeup_reason
.attr
,
2964 &dev_attr_hotkey_wakeup_hotunplug_complete
.attr
,
2965 &dev_attr_hotkey_mask
.attr
,
2966 &dev_attr_hotkey_all_mask
.attr
,
2967 &dev_attr_hotkey_recommended_mask
.attr
,
2968 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2969 &dev_attr_hotkey_source_mask
.attr
,
2970 &dev_attr_hotkey_poll_freq
.attr
,
2975 * Sync both the hw and sw blocking state of all switches
2977 static void tpacpi_send_radiosw_update(void)
2982 * We must sync all rfkill controllers *before* issuing any
2983 * rfkill input events, or we will race the rfkill core input
2986 * tpacpi_inputdev_send_mutex works as a syncronization point
2989 * We optimize to avoid numerous calls to hotkey_get_wlsw.
2992 wlsw
= hotkey_get_wlsw();
2994 /* Sync hw blocking state first if it is hw-blocked */
2995 if (wlsw
== TPACPI_RFK_RADIO_OFF
)
2996 tpacpi_rfk_update_hwblock_state(true);
2998 /* Sync sw blocking state */
2999 tpacpi_rfk_update_swstate_all();
3001 /* Sync hw blocking state last if it is hw-unblocked */
3002 if (wlsw
== TPACPI_RFK_RADIO_ON
)
3003 tpacpi_rfk_update_hwblock_state(false);
3005 /* Issue rfkill input event for WLSW switch */
3007 mutex_lock(&tpacpi_inputdev_send_mutex
);
3009 input_report_switch(tpacpi_inputdev
,
3010 SW_RFKILL_ALL
, (wlsw
> 0));
3011 input_sync(tpacpi_inputdev
);
3013 mutex_unlock(&tpacpi_inputdev_send_mutex
);
3017 * this can be unconditional, as we will poll state again
3018 * if userspace uses the notify to read data
3020 hotkey_radio_sw_notify_change();
3023 static void hotkey_exit(void)
3025 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3026 mutex_lock(&hotkey_mutex
);
3027 hotkey_poll_stop_sync();
3028 mutex_unlock(&hotkey_mutex
);
3031 if (hotkey_dev_attributes
)
3032 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
3034 kfree(hotkey_keycode_map
);
3036 dbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_HKEY
,
3037 "restoring original HKEY status and mask\n");
3038 /* yes, there is a bitwise or below, we want the
3039 * functions to be called even if one of them fail */
3040 if (((tp_features
.hotkey_mask
&&
3041 hotkey_mask_set(hotkey_orig_mask
)) |
3042 hotkey_status_set(false)) != 0)
3044 "failed to restore hot key mask "
3045 "to BIOS defaults\n");
3048 static void __init
hotkey_unmap(const unsigned int scancode
)
3050 if (hotkey_keycode_map
[scancode
] != KEY_RESERVED
) {
3051 clear_bit(hotkey_keycode_map
[scancode
],
3052 tpacpi_inputdev
->keybit
);
3053 hotkey_keycode_map
[scancode
] = KEY_RESERVED
;
3059 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3062 #define TPACPI_HK_Q_INIMASK 0x0001
3064 static const struct tpacpi_quirk tpacpi_hotkey_qtable
[] __initconst
= {
3065 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK
), /* 600E */
3066 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK
), /* 600E */
3067 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK
), /* 770, 770E, 770ED */
3068 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK
), /* A20m */
3069 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK
), /* A20p */
3070 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK
), /* A21e, A22e */
3071 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK
), /* A21e */
3072 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK
), /* A21m, A22m */
3073 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK
), /* A21p, A22p */
3074 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK
), /* A22e */
3075 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK
), /* A22m */
3076 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK
), /* A30/p (0) */
3077 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK
), /* R30 */
3078 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK
), /* R31 */
3079 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK
), /* T20 */
3080 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK
), /* T21 */
3081 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK
), /* T22 */
3082 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK
), /* X20, X21 */
3083 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK
), /* X22, X23, X24 */
3086 static int __init
hotkey_init(struct ibm_init_struct
*iibm
)
3088 /* Requirements for changing the default keymaps:
3090 * 1. Many of the keys are mapped to KEY_RESERVED for very
3091 * good reasons. Do not change them unless you have deep
3092 * knowledge on the IBM and Lenovo ThinkPad firmware for
3093 * the various ThinkPad models. The driver behaves
3094 * differently for KEY_RESERVED: such keys have their
3095 * hot key mask *unset* in mask_recommended, and also
3096 * in the initial hot key mask programmed into the
3097 * firmware at driver load time, which means the firm-
3098 * ware may react very differently if you change them to
3101 * 2. You must be subscribed to the linux-thinkpad and
3102 * ibm-acpi-devel mailing lists, and you should read the
3103 * list archives since 2007 if you want to change the
3104 * keymaps. This requirement exists so that you will
3105 * know the past history of problems with the thinkpad-
3106 * acpi driver keymaps, and also that you will be
3107 * listening to any bug reports;
3109 * 3. Do not send thinkpad-acpi specific patches directly to
3110 * for merging, *ever*. Send them to the linux-acpi
3111 * mailinglist for comments. Merging is to be done only
3112 * through acpi-test and the ACPI maintainer.
3114 * If the above is too much to ask, don't change the keymap.
3115 * Ask the thinkpad-acpi maintainer to do it, instead.
3117 static u16 ibm_keycode_map
[] __initdata
= {
3118 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3119 KEY_FN_F1
, KEY_FN_F2
, KEY_COFFEE
, KEY_SLEEP
,
3120 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
3121 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
3123 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
3124 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
3125 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
3126 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
3128 /* brightness: firmware always reacts to them */
3129 KEY_RESERVED
, /* 0x0F: FN+HOME (brightness up) */
3130 KEY_RESERVED
, /* 0x10: FN+END (brightness down) */
3132 /* Thinklight: firmware always react to it */
3133 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
3135 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
3136 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
3138 /* Volume: firmware always react to it and reprograms
3139 * the built-in *extra* mixer. Never map it to control
3140 * another mixer by default. */
3141 KEY_RESERVED
, /* 0x14: VOLUME UP */
3142 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
3143 KEY_RESERVED
, /* 0x16: MUTE */
3145 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
3147 /* (assignments unknown, please report if found) */
3148 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3149 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3151 static u16 lenovo_keycode_map
[] __initdata
= {
3152 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3153 KEY_FN_F1
, KEY_COFFEE
, KEY_BATTERY
, KEY_SLEEP
,
3154 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
3155 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
3157 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
3158 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
3159 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
3160 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
3162 /* These should be enabled --only-- when ACPI video
3163 * is disabled (i.e. in "vendor" mode), and are handled
3164 * in a special way by the init code */
3165 KEY_BRIGHTNESSUP
, /* 0x0F: FN+HOME (brightness up) */
3166 KEY_BRIGHTNESSDOWN
, /* 0x10: FN+END (brightness down) */
3168 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
3170 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
3171 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
3173 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3174 * react to it and reprograms the built-in *extra* mixer.
3175 * Never map it to control another mixer by default.
3177 * T60?, T61, R60?, R61: firmware and EC tries to send
3178 * these over the regular keyboard, so these are no-ops,
3179 * but there are still weird bugs re. MUTE, so do not
3180 * change unless you get test reports from all Lenovo
3181 * models. May cause the BIOS to interfere with the
3184 KEY_RESERVED
, /* 0x14: VOLUME UP */
3185 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
3186 KEY_RESERVED
, /* 0x16: MUTE */
3188 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
3190 /* (assignments unknown, please report if found) */
3191 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3192 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3195 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
3196 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
3197 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
3202 bool radiosw_state
= false;
3203 bool tabletsw_state
= false;
3205 unsigned long quirks
;
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_mutex
);
3219 mutex_init(&hotkey_thread_data_mutex
);
3222 /* hotkey not supported on 570 */
3223 tp_features
.hotkey
= hkey_handle
!= NULL
;
3225 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3227 str_supported(tp_features
.hotkey
));
3229 if (!tp_features
.hotkey
)
3232 quirks
= tpacpi_check_quirks(tpacpi_hotkey_qtable
,
3233 ARRAY_SIZE(tpacpi_hotkey_qtable
));
3235 tpacpi_disable_brightness_delay();
3237 /* MUST have enough space for all attributes to be added to
3238 * hotkey_dev_attributes */
3239 hotkey_dev_attributes
= create_attr_set(
3240 ARRAY_SIZE(hotkey_attributes
) + 2,
3242 if (!hotkey_dev_attributes
)
3244 res
= add_many_to_attr_set(hotkey_dev_attributes
,
3246 ARRAY_SIZE(hotkey_attributes
));
3250 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
3251 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3252 for HKEY interface version 0x100 */
3253 if (acpi_evalf(hkey_handle
, &hkeyv
, "MHKV", "qd")) {
3254 if ((hkeyv
>> 8) != 1) {
3255 printk(TPACPI_ERR
"unknown version of the "
3256 "HKEY interface: 0x%x\n", hkeyv
);
3257 printk(TPACPI_ERR
"please report this to %s\n",
3261 * MHKV 0x100 in A31, R40, R40e,
3262 * T4x, X31, and later
3264 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3265 "firmware HKEY interface version: 0x%x\n",
3268 /* Paranoia check AND init hotkey_all_mask */
3269 if (!acpi_evalf(hkey_handle
, &hotkey_all_mask
,
3272 "missing MHKA handler, "
3273 "please report this to %s\n",
3275 /* Fallback: pre-init for FN+F3,F4,F12 */
3276 hotkey_all_mask
= 0x080cU
;
3278 tp_features
.hotkey_mask
= 1;
3283 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3284 "hotkey masks are %s\n",
3285 str_supported(tp_features
.hotkey_mask
));
3287 /* Init hotkey_all_mask if not initialized yet */
3288 if (!tp_features
.hotkey_mask
&& !hotkey_all_mask
&&
3289 (quirks
& TPACPI_HK_Q_INIMASK
))
3290 hotkey_all_mask
= 0x080cU
; /* FN+F12, FN+F4, FN+F3 */
3292 /* Init hotkey_acpi_mask and hotkey_orig_mask */
3293 if (tp_features
.hotkey_mask
) {
3294 /* hotkey_source_mask *must* be zero for
3295 * the first hotkey_mask_get to return hotkey_orig_mask */
3296 res
= hotkey_mask_get();
3300 hotkey_orig_mask
= hotkey_acpi_mask
;
3302 hotkey_orig_mask
= hotkey_all_mask
;
3303 hotkey_acpi_mask
= hotkey_all_mask
;
3306 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3308 tp_features
.hotkey_wlsw
= 1;
3309 radiosw_state
= !!tpacpi_wlsw_emulstate
;
3311 "radio switch emulation enabled\n");
3314 /* Not all thinkpads have a hardware radio switch */
3315 if (acpi_evalf(hkey_handle
, &status
, "WLSW", "qd")) {
3316 tp_features
.hotkey_wlsw
= 1;
3317 radiosw_state
= !!status
;
3319 "radio switch found; radios are %s\n",
3320 enabled(status
, 0));
3322 if (tp_features
.hotkey_wlsw
)
3323 res
= add_to_attr_set(hotkey_dev_attributes
,
3324 &dev_attr_hotkey_radio_sw
.attr
);
3326 /* For X41t, X60t, X61t Tablets... */
3327 if (!res
&& acpi_evalf(hkey_handle
, &status
, "MHKG", "qd")) {
3328 tp_features
.hotkey_tablet
= 1;
3329 tabletsw_state
= !!(status
& TP_HOTKEY_TABLET_MASK
);
3331 "possible tablet mode switch found; "
3332 "ThinkPad in %s mode\n",
3333 (tabletsw_state
) ? "tablet" : "laptop");
3334 res
= add_to_attr_set(hotkey_dev_attributes
,
3335 &dev_attr_hotkey_tablet_mode
.attr
);
3339 res
= register_attr_set_with_sysfs(
3340 hotkey_dev_attributes
,
3341 &tpacpi_pdev
->dev
.kobj
);
3345 /* Set up key map */
3347 hotkey_keycode_map
= kmalloc(TPACPI_HOTKEY_MAP_SIZE
,
3349 if (!hotkey_keycode_map
) {
3351 "failed to allocate memory for key map\n");
3356 if (tpacpi_is_lenovo()) {
3357 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3358 "using Lenovo default hot key map\n");
3359 memcpy(hotkey_keycode_map
, &lenovo_keycode_map
,
3360 TPACPI_HOTKEY_MAP_SIZE
);
3362 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3363 "using IBM default hot key map\n");
3364 memcpy(hotkey_keycode_map
, &ibm_keycode_map
,
3365 TPACPI_HOTKEY_MAP_SIZE
);
3368 input_set_capability(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
);
3369 tpacpi_inputdev
->keycodesize
= TPACPI_HOTKEY_MAP_TYPESIZE
;
3370 tpacpi_inputdev
->keycodemax
= TPACPI_HOTKEY_MAP_LEN
;
3371 tpacpi_inputdev
->keycode
= hotkey_keycode_map
;
3372 for (i
= 0; i
< TPACPI_HOTKEY_MAP_LEN
; i
++) {
3373 if (hotkey_keycode_map
[i
] != KEY_RESERVED
) {
3374 input_set_capability(tpacpi_inputdev
, EV_KEY
,
3375 hotkey_keycode_map
[i
]);
3377 if (i
< sizeof(hotkey_reserved_mask
)*8)
3378 hotkey_reserved_mask
|= 1 << i
;
3382 if (tp_features
.hotkey_wlsw
) {
3383 input_set_capability(tpacpi_inputdev
, EV_SW
, SW_RFKILL_ALL
);
3384 input_report_switch(tpacpi_inputdev
,
3385 SW_RFKILL_ALL
, radiosw_state
);
3387 if (tp_features
.hotkey_tablet
) {
3388 input_set_capability(tpacpi_inputdev
, EV_SW
, SW_TABLET_MODE
);
3389 input_report_switch(tpacpi_inputdev
,
3390 SW_TABLET_MODE
, tabletsw_state
);
3393 /* Do not issue duplicate brightness change events to
3394 * userspace. tpacpi_detect_brightness_capabilities() must have
3395 * been called before this point */
3396 if (tp_features
.bright_acpimode
&& acpi_video_backlight_support()) {
3398 "This ThinkPad has standard ACPI backlight "
3399 "brightness control, supported by the ACPI "
3401 printk(TPACPI_NOTICE
3402 "Disabling thinkpad-acpi brightness events "
3405 /* Disable brightness up/down on Lenovo thinkpads when
3406 * ACPI is handling them, otherwise it is plain impossible
3407 * for userspace to do something even remotely sane */
3408 hotkey_reserved_mask
|=
3409 (1 << TP_ACPI_HOTKEYSCAN_FNHOME
)
3410 | (1 << TP_ACPI_HOTKEYSCAN_FNEND
);
3411 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME
);
3412 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND
);
3415 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3416 hotkey_source_mask
= TPACPI_HKEY_NVRAM_GOOD_MASK
3418 & ~hotkey_reserved_mask
;
3420 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3421 "hotkey source mask 0x%08x, polling freq %u\n",
3422 hotkey_source_mask
, hotkey_poll_freq
);
3425 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3426 "enabling firmware HKEY event interface...\n");
3427 res
= hotkey_status_set(true);
3432 res
= hotkey_mask_set(((hotkey_all_mask
& ~hotkey_reserved_mask
)
3433 | hotkey_driver_mask
)
3434 & ~hotkey_source_mask
);
3435 if (res
< 0 && res
!= -ENXIO
) {
3439 hotkey_user_mask
= (hotkey_acpi_mask
| hotkey_source_mask
)
3440 & ~hotkey_reserved_mask
;
3441 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3442 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3443 hotkey_user_mask
, hotkey_acpi_mask
, hotkey_source_mask
);
3445 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3446 "legacy ibm/hotkey event reporting over procfs %s\n",
3447 (hotkey_report_mode
< 2) ?
3448 "enabled" : "disabled");
3450 tpacpi_inputdev
->open
= &hotkey_inputdev_open
;
3451 tpacpi_inputdev
->close
= &hotkey_inputdev_close
;
3453 hotkey_poll_setup_safe(true);
3458 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
3459 hotkey_dev_attributes
= NULL
;
3461 return (res
< 0)? res
: 1;
3464 static bool hotkey_notify_hotkey(const u32 hkey
,
3466 bool *ignore_acpi_ev
)
3468 /* 0x1000-0x1FFF: key presses */
3469 unsigned int scancode
= hkey
& 0xfff;
3470 *send_acpi_ev
= true;
3471 *ignore_acpi_ev
= false;
3473 if (scancode
> 0 && scancode
< 0x21) {
3475 if (!(hotkey_source_mask
& (1 << scancode
))) {
3476 tpacpi_input_send_key_masked(scancode
);
3477 *send_acpi_ev
= false;
3479 *ignore_acpi_ev
= true;
3486 static bool hotkey_notify_wakeup(const u32 hkey
,
3488 bool *ignore_acpi_ev
)
3490 /* 0x2000-0x2FFF: Wakeup reason */
3491 *send_acpi_ev
= true;
3492 *ignore_acpi_ev
= false;
3495 case TP_HKEY_EV_WKUP_S3_UNDOCK
: /* suspend, undock */
3496 case TP_HKEY_EV_WKUP_S4_UNDOCK
: /* hibernation, undock */
3497 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_UNDOCK
;
3498 *ignore_acpi_ev
= true;
3501 case TP_HKEY_EV_WKUP_S3_BAYEJ
: /* suspend, bay eject */
3502 case TP_HKEY_EV_WKUP_S4_BAYEJ
: /* hibernation, bay eject */
3503 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_BAYEJ
;
3504 *ignore_acpi_ev
= true;
3507 case TP_HKEY_EV_WKUP_S3_BATLOW
: /* Battery on critical low level/S3 */
3508 case TP_HKEY_EV_WKUP_S4_BATLOW
: /* Battery on critical low level/S4 */
3510 "EMERGENCY WAKEUP: battery almost empty\n");
3511 /* how to auto-heal: */
3512 /* 2313: woke up from S3, go to S4/S5 */
3513 /* 2413: woke up from S4, go to S5 */
3520 if (hotkey_wakeup_reason
!= TP_ACPI_WAKEUP_NONE
) {
3522 "woke up due to a hot-unplug "
3524 hotkey_wakeup_reason_notify_change();
3529 static bool hotkey_notify_usrevent(const u32 hkey
,
3531 bool *ignore_acpi_ev
)
3533 /* 0x5000-0x5FFF: human interface helpers */
3534 *send_acpi_ev
= true;
3535 *ignore_acpi_ev
= false;
3538 case TP_HKEY_EV_PEN_INSERTED
: /* X61t: tablet pen inserted into bay */
3539 case TP_HKEY_EV_PEN_REMOVED
: /* X61t: tablet pen removed from bay */
3542 case TP_HKEY_EV_TABLET_TABLET
: /* X41t-X61t: tablet mode */
3543 case TP_HKEY_EV_TABLET_NOTEBOOK
: /* X41t-X61t: normal mode */
3544 tpacpi_input_send_tabletsw();
3545 hotkey_tablet_mode_notify_change();
3546 *send_acpi_ev
= false;
3549 case TP_HKEY_EV_LID_CLOSE
: /* Lid closed */
3550 case TP_HKEY_EV_LID_OPEN
: /* Lid opened */
3551 case TP_HKEY_EV_BRGHT_CHANGED
: /* brightness changed */
3552 /* do not propagate these events */
3553 *ignore_acpi_ev
= true;
3561 static void thermal_dump_all_sensors(void);
3563 static bool hotkey_notify_thermal(const u32 hkey
,
3565 bool *ignore_acpi_ev
)
3569 /* 0x6000-0x6FFF: thermal alarms */
3570 *send_acpi_ev
= true;
3571 *ignore_acpi_ev
= false;
3574 case TP_HKEY_EV_THM_TABLE_CHANGED
:
3576 "EC reports that Thermal Table has changed\n");
3577 /* recommended action: do nothing, we don't have
3578 * Lenovo ATM information */
3580 case TP_HKEY_EV_ALARM_BAT_HOT
:
3582 "THERMAL ALARM: battery is too hot!\n");
3583 /* recommended action: warn user through gui */
3585 case TP_HKEY_EV_ALARM_BAT_XHOT
:
3587 "THERMAL EMERGENCY: battery is extremely hot!\n");
3588 /* recommended action: immediate sleep/hibernate */
3590 case TP_HKEY_EV_ALARM_SENSOR_HOT
:
3593 "a sensor reports something is too hot!\n");
3594 /* recommended action: warn user through gui, that */
3595 /* some internal component is too hot */
3597 case TP_HKEY_EV_ALARM_SENSOR_XHOT
:
3599 "THERMAL EMERGENCY: "
3600 "a sensor reports something is extremely hot!\n");
3601 /* recommended action: immediate sleep/hibernate */
3605 "THERMAL ALERT: unknown thermal alarm received\n");
3609 thermal_dump_all_sensors();
3614 static void hotkey_notify(struct ibm_struct
*ibm
, u32 event
)
3618 bool ignore_acpi_ev
;
3621 if (event
!= 0x80) {
3623 "unknown HKEY notification event %d\n", event
);
3624 /* forward it to userspace, maybe it knows how to handle it */
3625 acpi_bus_generate_netlink_event(
3626 ibm
->acpi
->device
->pnp
.device_class
,
3627 dev_name(&ibm
->acpi
->device
->dev
),
3633 if (!acpi_evalf(hkey_handle
, &hkey
, "MHKP", "d")) {
3634 printk(TPACPI_ERR
"failed to retrieve HKEY event\n");
3643 send_acpi_ev
= true;
3644 ignore_acpi_ev
= false;
3646 switch (hkey
>> 12) {
3648 /* 0x1000-0x1FFF: key presses */
3649 known_ev
= hotkey_notify_hotkey(hkey
, &send_acpi_ev
,
3653 /* 0x2000-0x2FFF: Wakeup reason */
3654 known_ev
= hotkey_notify_wakeup(hkey
, &send_acpi_ev
,
3658 /* 0x3000-0x3FFF: bay-related wakeups */
3660 case TP_HKEY_EV_BAYEJ_ACK
:
3661 hotkey_autosleep_ack
= 1;
3664 hotkey_wakeup_hotunplug_complete_notify_change();
3667 case TP_HKEY_EV_OPTDRV_EJ
:
3668 /* FIXME: kick libata if SATA link offline */
3676 /* 0x4000-0x4FFF: dock-related wakeups */
3677 if (hkey
== TP_HKEY_EV_UNDOCK_ACK
) {
3678 hotkey_autosleep_ack
= 1;
3681 hotkey_wakeup_hotunplug_complete_notify_change();
3688 /* 0x5000-0x5FFF: human interface helpers */
3689 known_ev
= hotkey_notify_usrevent(hkey
, &send_acpi_ev
,
3693 /* 0x6000-0x6FFF: thermal alarms */
3694 known_ev
= hotkey_notify_thermal(hkey
, &send_acpi_ev
,
3698 /* 0x7000-0x7FFF: misc */
3699 if (tp_features
.hotkey_wlsw
&&
3700 hkey
== TP_HKEY_EV_RFKILL_CHANGED
) {
3701 tpacpi_send_radiosw_update();
3706 /* fallthrough to default */
3711 printk(TPACPI_NOTICE
3712 "unhandled HKEY event 0x%04x\n", hkey
);
3713 printk(TPACPI_NOTICE
3714 "please report the conditions when this "
3715 "event happened to %s\n", TPACPI_MAIL
);
3719 if (!ignore_acpi_ev
&&
3720 (send_acpi_ev
|| hotkey_report_mode
< 2)) {
3721 acpi_bus_generate_proc_event(ibm
->acpi
->device
,
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(pm_message_t state
)
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)
3749 "error while attempting to reset the event "
3750 "firmware interface\n");
3752 tpacpi_send_radiosw_update();
3753 hotkey_tablet_mode_notify_change();
3754 hotkey_wakeup_reason_notify_change();
3755 hotkey_wakeup_hotunplug_complete_notify_change();
3756 hotkey_poll_setup_safe(false);
3759 /* procfs -------------------------------------------------------------- */
3760 static int hotkey_read(struct seq_file
*m
)
3764 if (!tp_features
.hotkey
) {
3765 seq_printf(m
, "status:\t\tnot supported\n");
3769 if (mutex_lock_killable(&hotkey_mutex
))
3770 return -ERESTARTSYS
;
3771 res
= hotkey_status_get(&status
);
3773 res
= hotkey_mask_get();
3774 mutex_unlock(&hotkey_mutex
);
3778 seq_printf(m
, "status:\t\t%s\n", enabled(status
, 0));
3779 if (hotkey_all_mask
) {
3780 seq_printf(m
, "mask:\t\t0x%08x\n", hotkey_user_mask
);
3781 seq_printf(m
, "commands:\tenable, disable, reset, <mask>\n");
3783 seq_printf(m
, "mask:\t\tnot supported\n");
3784 seq_printf(m
, "commands:\tenable, disable, reset\n");
3790 static void hotkey_enabledisable_warn(bool enable
)
3792 tpacpi_log_usertask("procfs hotkey enable/disable");
3793 if (!WARN((tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
|| !enable
),
3795 "hotkey enable/disable functionality has been "
3796 "removed from the driver. Hotkeys are always "
3799 "Please remove the hotkey=enable module "
3800 "parameter, it is deprecated. Hotkeys are always "
3804 static int hotkey_write(char *buf
)
3810 if (!tp_features
.hotkey
)
3813 if (mutex_lock_killable(&hotkey_mutex
))
3814 return -ERESTARTSYS
;
3816 mask
= hotkey_user_mask
;
3819 while ((cmd
= next_cmd(&buf
))) {
3820 if (strlencmp(cmd
, "enable") == 0) {
3821 hotkey_enabledisable_warn(1);
3822 } else if (strlencmp(cmd
, "disable") == 0) {
3823 hotkey_enabledisable_warn(0);
3825 } else if (strlencmp(cmd
, "reset") == 0) {
3826 mask
= (hotkey_all_mask
| hotkey_source_mask
)
3827 & ~hotkey_reserved_mask
;
3828 } else if (sscanf(cmd
, "0x%x", &mask
) == 1) {
3830 } else if (sscanf(cmd
, "%x", &mask
) == 1) {
3839 tpacpi_disclose_usertask("procfs hotkey",
3840 "set mask to 0x%08x\n", mask
);
3841 res
= hotkey_user_mask_set(mask
);
3845 mutex_unlock(&hotkey_mutex
);
3849 static const struct acpi_device_id ibm_htk_device_ids
[] = {
3850 {TPACPI_ACPI_HKEY_HID
, 0},
3854 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
= {
3855 .hid
= ibm_htk_device_ids
,
3856 .notify
= hotkey_notify
,
3857 .handle
= &hkey_handle
,
3858 .type
= ACPI_DEVICE_NOTIFY
,
3861 static struct ibm_struct hotkey_driver_data
= {
3863 .read
= hotkey_read
,
3864 .write
= hotkey_write
,
3865 .exit
= hotkey_exit
,
3866 .resume
= hotkey_resume
,
3867 .suspend
= hotkey_suspend
,
3868 .acpi
= &ibm_hotkey_acpidriver
,
3871 /*************************************************************************
3872 * Bluetooth subdriver
3876 /* ACPI GBDC/SBDC bits */
3877 TP_ACPI_BLUETOOTH_HWPRESENT
= 0x01, /* Bluetooth hw available */
3878 TP_ACPI_BLUETOOTH_RADIOSSW
= 0x02, /* Bluetooth radio enabled */
3879 TP_ACPI_BLUETOOTH_RESUMECTRL
= 0x04, /* Bluetooth state at resume:
3880 0 = disable, 1 = enable */
3884 /* ACPI \BLTH commands */
3885 TP_ACPI_BLTH_GET_ULTRAPORT_ID
= 0x00, /* Get Ultraport BT ID */
3886 TP_ACPI_BLTH_GET_PWR_ON_RESUME
= 0x01, /* Get power-on-resume state */
3887 TP_ACPI_BLTH_PWR_ON_ON_RESUME
= 0x02, /* Resume powered on */
3888 TP_ACPI_BLTH_PWR_OFF_ON_RESUME
= 0x03, /* Resume powered off */
3889 TP_ACPI_BLTH_SAVE_STATE
= 0x05, /* Save state for S4/S5 */
3892 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3894 static int bluetooth_get_status(void)
3898 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3899 if (dbg_bluetoothemul
)
3900 return (tpacpi_bluetooth_emulstate
) ?
3901 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
3904 if (!acpi_evalf(hkey_handle
, &status
, "GBDC", "d"))
3907 return ((status
& TP_ACPI_BLUETOOTH_RADIOSSW
) != 0) ?
3908 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
3911 static int bluetooth_set_status(enum tpacpi_rfkill_state state
)
3915 vdbg_printk(TPACPI_DBG_RFKILL
,
3916 "will attempt to %s bluetooth\n",
3917 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
3919 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3920 if (dbg_bluetoothemul
) {
3921 tpacpi_bluetooth_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
3926 if (state
== TPACPI_RFK_RADIO_ON
)
3927 status
= TP_ACPI_BLUETOOTH_RADIOSSW
3928 | TP_ACPI_BLUETOOTH_RESUMECTRL
;
3932 if (!acpi_evalf(hkey_handle
, NULL
, "SBDC", "vd", status
))
3938 /* sysfs bluetooth enable ---------------------------------------------- */
3939 static ssize_t
bluetooth_enable_show(struct device
*dev
,
3940 struct device_attribute
*attr
,
3943 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID
,
3947 static ssize_t
bluetooth_enable_store(struct device
*dev
,
3948 struct device_attribute
*attr
,
3949 const char *buf
, size_t count
)
3951 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID
,
3955 static struct device_attribute dev_attr_bluetooth_enable
=
3956 __ATTR(bluetooth_enable
, S_IWUSR
| S_IRUGO
,
3957 bluetooth_enable_show
, bluetooth_enable_store
);
3959 /* --------------------------------------------------------------------- */
3961 static struct attribute
*bluetooth_attributes
[] = {
3962 &dev_attr_bluetooth_enable
.attr
,
3966 static const struct attribute_group bluetooth_attr_group
= {
3967 .attrs
= bluetooth_attributes
,
3970 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops
= {
3971 .get_status
= bluetooth_get_status
,
3972 .set_status
= bluetooth_set_status
,
3975 static void bluetooth_shutdown(void)
3977 /* Order firmware to save current state to NVRAM */
3978 if (!acpi_evalf(NULL
, NULL
, "\\BLTH", "vd",
3979 TP_ACPI_BLTH_SAVE_STATE
))
3980 printk(TPACPI_NOTICE
3981 "failed to save bluetooth state to NVRAM\n");
3983 vdbg_printk(TPACPI_DBG_RFKILL
,
3984 "bluestooth state saved to NVRAM\n");
3987 static void bluetooth_exit(void)
3989 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
3990 &bluetooth_attr_group
);
3992 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
);
3994 bluetooth_shutdown();
3997 static int __init
bluetooth_init(struct ibm_init_struct
*iibm
)
4002 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4003 "initializing bluetooth subdriver\n");
4005 TPACPI_ACPIHANDLE_INIT(hkey
);
4007 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4008 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
4009 tp_features
.bluetooth
= hkey_handle
&&
4010 acpi_evalf(hkey_handle
, &status
, "GBDC", "qd");
4012 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4013 "bluetooth is %s, status 0x%02x\n",
4014 str_supported(tp_features
.bluetooth
),
4017 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4018 if (dbg_bluetoothemul
) {
4019 tp_features
.bluetooth
= 1;
4021 "bluetooth switch emulation enabled\n");
4024 if (tp_features
.bluetooth
&&
4025 !(status
& TP_ACPI_BLUETOOTH_HWPRESENT
)) {
4026 /* no bluetooth hardware present in system */
4027 tp_features
.bluetooth
= 0;
4028 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4029 "bluetooth hardware not installed\n");
4032 if (!tp_features
.bluetooth
)
4035 res
= tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
,
4036 &bluetooth_tprfk_ops
,
4037 RFKILL_TYPE_BLUETOOTH
,
4038 TPACPI_RFK_BLUETOOTH_SW_NAME
,
4043 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
4044 &bluetooth_attr_group
);
4046 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
);
4053 /* procfs -------------------------------------------------------------- */
4054 static int bluetooth_read(struct seq_file
*m
)
4056 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID
, m
);
4059 static int bluetooth_write(char *buf
)
4061 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID
, buf
);
4064 static struct ibm_struct bluetooth_driver_data
= {
4065 .name
= "bluetooth",
4066 .read
= bluetooth_read
,
4067 .write
= bluetooth_write
,
4068 .exit
= bluetooth_exit
,
4069 .shutdown
= bluetooth_shutdown
,
4072 /*************************************************************************
4077 /* ACPI GWAN/SWAN bits */
4078 TP_ACPI_WANCARD_HWPRESENT
= 0x01, /* Wan hw available */
4079 TP_ACPI_WANCARD_RADIOSSW
= 0x02, /* Wan radio enabled */
4080 TP_ACPI_WANCARD_RESUMECTRL
= 0x04, /* Wan state at resume:
4081 0 = disable, 1 = enable */
4084 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4086 static int wan_get_status(void)
4090 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4092 return (tpacpi_wwan_emulstate
) ?
4093 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4096 if (!acpi_evalf(hkey_handle
, &status
, "GWAN", "d"))
4099 return ((status
& TP_ACPI_WANCARD_RADIOSSW
) != 0) ?
4100 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4103 static int wan_set_status(enum tpacpi_rfkill_state state
)
4107 vdbg_printk(TPACPI_DBG_RFKILL
,
4108 "will attempt to %s wwan\n",
4109 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
4111 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4113 tpacpi_wwan_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
4118 if (state
== TPACPI_RFK_RADIO_ON
)
4119 status
= TP_ACPI_WANCARD_RADIOSSW
4120 | TP_ACPI_WANCARD_RESUMECTRL
;
4124 if (!acpi_evalf(hkey_handle
, NULL
, "SWAN", "vd", status
))
4130 /* sysfs wan enable ---------------------------------------------------- */
4131 static ssize_t
wan_enable_show(struct device
*dev
,
4132 struct device_attribute
*attr
,
4135 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID
,
4139 static ssize_t
wan_enable_store(struct device
*dev
,
4140 struct device_attribute
*attr
,
4141 const char *buf
, size_t count
)
4143 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID
,
4147 static struct device_attribute dev_attr_wan_enable
=
4148 __ATTR(wwan_enable
, S_IWUSR
| S_IRUGO
,
4149 wan_enable_show
, wan_enable_store
);
4151 /* --------------------------------------------------------------------- */
4153 static struct attribute
*wan_attributes
[] = {
4154 &dev_attr_wan_enable
.attr
,
4158 static const struct attribute_group wan_attr_group
= {
4159 .attrs
= wan_attributes
,
4162 static const struct tpacpi_rfk_ops wan_tprfk_ops
= {
4163 .get_status
= wan_get_status
,
4164 .set_status
= wan_set_status
,
4167 static void wan_shutdown(void)
4169 /* Order firmware to save current state to NVRAM */
4170 if (!acpi_evalf(NULL
, NULL
, "\\WGSV", "vd",
4171 TP_ACPI_WGSV_SAVE_STATE
))
4172 printk(TPACPI_NOTICE
4173 "failed to save WWAN state to NVRAM\n");
4175 vdbg_printk(TPACPI_DBG_RFKILL
,
4176 "WWAN state saved to NVRAM\n");
4179 static void wan_exit(void)
4181 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
4184 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID
);
4189 static int __init
wan_init(struct ibm_init_struct
*iibm
)
4194 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4195 "initializing wan subdriver\n");
4197 TPACPI_ACPIHANDLE_INIT(hkey
);
4199 tp_features
.wan
= hkey_handle
&&
4200 acpi_evalf(hkey_handle
, &status
, "GWAN", "qd");
4202 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4203 "wan is %s, status 0x%02x\n",
4204 str_supported(tp_features
.wan
),
4207 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4209 tp_features
.wan
= 1;
4211 "wwan switch emulation enabled\n");
4214 if (tp_features
.wan
&&
4215 !(status
& TP_ACPI_WANCARD_HWPRESENT
)) {
4216 /* no wan hardware present in system */
4217 tp_features
.wan
= 0;
4218 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4219 "wan hardware not installed\n");
4222 if (!tp_features
.wan
)
4225 res
= tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID
,
4228 TPACPI_RFK_WWAN_SW_NAME
,
4233 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
4237 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID
);
4244 /* procfs -------------------------------------------------------------- */
4245 static int wan_read(struct seq_file
*m
)
4247 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID
, m
);
4250 static int wan_write(char *buf
)
4252 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID
, buf
);
4255 static struct ibm_struct wan_driver_data
= {
4260 .shutdown
= wan_shutdown
,
4263 /*************************************************************************
4268 /* ACPI GUWB/SUWB bits */
4269 TP_ACPI_UWB_HWPRESENT
= 0x01, /* UWB hw available */
4270 TP_ACPI_UWB_RADIOSSW
= 0x02, /* UWB radio enabled */
4273 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4275 static int uwb_get_status(void)
4279 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4281 return (tpacpi_uwb_emulstate
) ?
4282 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4285 if (!acpi_evalf(hkey_handle
, &status
, "GUWB", "d"))
4288 return ((status
& TP_ACPI_UWB_RADIOSSW
) != 0) ?
4289 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4292 static int uwb_set_status(enum tpacpi_rfkill_state state
)
4296 vdbg_printk(TPACPI_DBG_RFKILL
,
4297 "will attempt to %s UWB\n",
4298 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
4300 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4302 tpacpi_uwb_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
4307 if (state
== TPACPI_RFK_RADIO_ON
)
4308 status
= TP_ACPI_UWB_RADIOSSW
;
4312 if (!acpi_evalf(hkey_handle
, NULL
, "SUWB", "vd", status
))
4318 /* --------------------------------------------------------------------- */
4320 static const struct tpacpi_rfk_ops uwb_tprfk_ops
= {
4321 .get_status
= uwb_get_status
,
4322 .set_status
= uwb_set_status
,
4325 static void uwb_exit(void)
4327 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID
);
4330 static int __init
uwb_init(struct ibm_init_struct
*iibm
)
4335 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4336 "initializing uwb subdriver\n");
4338 TPACPI_ACPIHANDLE_INIT(hkey
);
4340 tp_features
.uwb
= hkey_handle
&&
4341 acpi_evalf(hkey_handle
, &status
, "GUWB", "qd");
4343 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4344 "uwb is %s, status 0x%02x\n",
4345 str_supported(tp_features
.uwb
),
4348 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4350 tp_features
.uwb
= 1;
4352 "uwb switch emulation enabled\n");
4355 if (tp_features
.uwb
&&
4356 !(status
& TP_ACPI_UWB_HWPRESENT
)) {
4357 /* no uwb hardware present in system */
4358 tp_features
.uwb
= 0;
4359 dbg_printk(TPACPI_DBG_INIT
,
4360 "uwb hardware not installed\n");
4363 if (!tp_features
.uwb
)
4366 res
= tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID
,
4369 TPACPI_RFK_UWB_SW_NAME
,
4374 static struct ibm_struct uwb_driver_data
= {
4377 .flags
.experimental
= 1,
4380 /*************************************************************************
4384 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
4386 enum video_access_mode
{
4387 TPACPI_VIDEO_NONE
= 0,
4388 TPACPI_VIDEO_570
, /* 570 */
4389 TPACPI_VIDEO_770
, /* 600e/x, 770e, 770x */
4390 TPACPI_VIDEO_NEW
, /* all others */
4393 enum { /* video status flags, based on VIDEO_570 */
4394 TP_ACPI_VIDEO_S_LCD
= 0x01, /* LCD output enabled */
4395 TP_ACPI_VIDEO_S_CRT
= 0x02, /* CRT output enabled */
4396 TP_ACPI_VIDEO_S_DVI
= 0x08, /* DVI output enabled */
4399 enum { /* TPACPI_VIDEO_570 constants */
4400 TP_ACPI_VIDEO_570_PHSCMD
= 0x87, /* unknown magic constant :( */
4401 TP_ACPI_VIDEO_570_PHSMASK
= 0x03, /* PHS bits that map to
4402 * video_status_flags */
4403 TP_ACPI_VIDEO_570_PHS2CMD
= 0x8b, /* unknown magic constant :( */
4404 TP_ACPI_VIDEO_570_PHS2SET
= 0x80, /* unknown magic constant :( */
4407 static enum video_access_mode video_supported
;
4408 static int video_orig_autosw
;
4410 static int video_autosw_get(void);
4411 static int video_autosw_set(int enable
);
4413 TPACPI_HANDLE(vid2
, root
, "\\_SB.PCI0.AGPB.VID"); /* G41 */
4415 static int __init
video_init(struct ibm_init_struct
*iibm
)
4419 vdbg_printk(TPACPI_DBG_INIT
, "initializing video subdriver\n");
4421 TPACPI_ACPIHANDLE_INIT(vid
);
4422 if (tpacpi_is_ibm())
4423 TPACPI_ACPIHANDLE_INIT(vid2
);
4425 if (vid2_handle
&& acpi_evalf(NULL
, &ivga
, "\\IVGA", "d") && ivga
)
4426 /* G41, assume IVGA doesn't change */
4427 vid_handle
= vid2_handle
;
4430 /* video switching not supported on R30, R31 */
4431 video_supported
= TPACPI_VIDEO_NONE
;
4432 else if (tpacpi_is_ibm() &&
4433 acpi_evalf(vid_handle
, &video_orig_autosw
, "SWIT", "qd"))
4435 video_supported
= TPACPI_VIDEO_570
;
4436 else if (tpacpi_is_ibm() &&
4437 acpi_evalf(vid_handle
, &video_orig_autosw
, "^VADL", "qd"))
4438 /* 600e/x, 770e, 770x */
4439 video_supported
= TPACPI_VIDEO_770
;
4442 video_supported
= TPACPI_VIDEO_NEW
;
4444 vdbg_printk(TPACPI_DBG_INIT
, "video is %s, mode %d\n",
4445 str_supported(video_supported
!= TPACPI_VIDEO_NONE
),
4448 return (video_supported
!= TPACPI_VIDEO_NONE
)? 0 : 1;
4451 static void video_exit(void)
4453 dbg_printk(TPACPI_DBG_EXIT
,
4454 "restoring original video autoswitch mode\n");
4455 if (video_autosw_set(video_orig_autosw
))
4456 printk(TPACPI_ERR
"error while trying to restore original "
4457 "video autoswitch mode\n");
4460 static int video_outputsw_get(void)
4465 switch (video_supported
) {
4466 case TPACPI_VIDEO_570
:
4467 if (!acpi_evalf(NULL
, &i
, "\\_SB.PHS", "dd",
4468 TP_ACPI_VIDEO_570_PHSCMD
))
4470 status
= i
& TP_ACPI_VIDEO_570_PHSMASK
;
4472 case TPACPI_VIDEO_770
:
4473 if (!acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
4476 status
|= TP_ACPI_VIDEO_S_LCD
;
4477 if (!acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
4480 status
|= TP_ACPI_VIDEO_S_CRT
;
4482 case TPACPI_VIDEO_NEW
:
4483 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 1) ||
4484 !acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
4487 status
|= TP_ACPI_VIDEO_S_CRT
;
4489 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0) ||
4490 !acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
4493 status
|= TP_ACPI_VIDEO_S_LCD
;
4494 if (!acpi_evalf(NULL
, &i
, "\\VCDD", "d"))
4497 status
|= TP_ACPI_VIDEO_S_DVI
;
4506 static int video_outputsw_set(int status
)
4511 switch (video_supported
) {
4512 case TPACPI_VIDEO_570
:
4513 res
= acpi_evalf(NULL
, NULL
,
4514 "\\_SB.PHS2", "vdd",
4515 TP_ACPI_VIDEO_570_PHS2CMD
,
4516 status
| TP_ACPI_VIDEO_570_PHS2SET
);
4518 case TPACPI_VIDEO_770
:
4519 autosw
= video_autosw_get();
4523 res
= video_autosw_set(1);
4526 res
= acpi_evalf(vid_handle
, NULL
,
4527 "ASWT", "vdd", status
* 0x100, 0);
4528 if (!autosw
&& video_autosw_set(autosw
)) {
4530 "video auto-switch left enabled due to error\n");
4534 case TPACPI_VIDEO_NEW
:
4535 res
= acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0x80) &&
4536 acpi_evalf(NULL
, NULL
, "\\VSDS", "vdd", status
, 1);
4542 return (res
)? 0 : -EIO
;
4545 static int video_autosw_get(void)
4549 switch (video_supported
) {
4550 case TPACPI_VIDEO_570
:
4551 if (!acpi_evalf(vid_handle
, &autosw
, "SWIT", "d"))
4554 case TPACPI_VIDEO_770
:
4555 case TPACPI_VIDEO_NEW
:
4556 if (!acpi_evalf(vid_handle
, &autosw
, "^VDEE", "d"))
4566 static int video_autosw_set(int enable
)
4568 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", (enable
)? 1 : 0))
4573 static int video_outputsw_cycle(void)
4575 int autosw
= video_autosw_get();
4581 switch (video_supported
) {
4582 case TPACPI_VIDEO_570
:
4583 res
= video_autosw_set(1);
4586 res
= acpi_evalf(ec_handle
, NULL
, "_Q16", "v");
4588 case TPACPI_VIDEO_770
:
4589 case TPACPI_VIDEO_NEW
:
4590 res
= video_autosw_set(1);
4593 res
= acpi_evalf(vid_handle
, NULL
, "VSWT", "v");
4598 if (!autosw
&& video_autosw_set(autosw
)) {
4600 "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 if (work_pending(&tpacpi_led_thinklight
.work
))
4854 flush_workqueue(tpacpi_wq
);
4857 static int light_read(struct seq_file
*m
)
4861 if (!tp_features
.light
) {
4862 seq_printf(m
, "status:\t\tnot supported\n");
4863 } else if (!tp_features
.light_status
) {
4864 seq_printf(m
, "status:\t\tunknown\n");
4865 seq_printf(m
, "commands:\ton, off\n");
4867 status
= light_get_status();
4870 seq_printf(m
, "status:\t\t%s\n", onoff(status
, 0));
4871 seq_printf(m
, "commands:\ton, off\n");
4877 static int light_write(char *buf
)
4882 if (!tp_features
.light
)
4885 while ((cmd
= next_cmd(&buf
))) {
4886 if (strlencmp(cmd
, "on") == 0) {
4888 } else if (strlencmp(cmd
, "off") == 0) {
4894 return light_set_status(newstatus
);
4897 static struct ibm_struct light_driver_data
= {
4900 .write
= light_write
,
4904 /*************************************************************************
4908 /* sysfs cmos_command -------------------------------------------------- */
4909 static ssize_t
cmos_command_store(struct device
*dev
,
4910 struct device_attribute
*attr
,
4911 const char *buf
, size_t count
)
4913 unsigned long cmos_cmd
;
4916 if (parse_strtoul(buf
, 21, &cmos_cmd
))
4919 res
= issue_thinkpad_cmos_command(cmos_cmd
);
4920 return (res
)? res
: count
;
4923 static struct device_attribute dev_attr_cmos_command
=
4924 __ATTR(cmos_command
, S_IWUSR
, NULL
, cmos_command_store
);
4926 /* --------------------------------------------------------------------- */
4928 static int __init
cmos_init(struct ibm_init_struct
*iibm
)
4932 vdbg_printk(TPACPI_DBG_INIT
,
4933 "initializing cmos commands subdriver\n");
4935 TPACPI_ACPIHANDLE_INIT(cmos
);
4937 vdbg_printk(TPACPI_DBG_INIT
, "cmos commands are %s\n",
4938 str_supported(cmos_handle
!= NULL
));
4940 res
= device_create_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4944 return (cmos_handle
)? 0 : 1;
4947 static void cmos_exit(void)
4949 device_remove_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4952 static int cmos_read(struct seq_file
*m
)
4954 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4955 R30, R31, T20-22, X20-21 */
4957 seq_printf(m
, "status:\t\tnot supported\n");
4959 seq_printf(m
, "status:\t\tsupported\n");
4960 seq_printf(m
, "commands:\t<cmd> (<cmd> is 0-21)\n");
4966 static int cmos_write(char *buf
)
4971 while ((cmd
= next_cmd(&buf
))) {
4972 if (sscanf(cmd
, "%u", &cmos_cmd
) == 1 &&
4973 cmos_cmd
>= 0 && cmos_cmd
<= 21) {
4978 res
= issue_thinkpad_cmos_command(cmos_cmd
);
4986 static struct ibm_struct cmos_driver_data
= {
4989 .write
= cmos_write
,
4993 /*************************************************************************
4997 enum led_access_mode
{
4998 TPACPI_LED_NONE
= 0,
4999 TPACPI_LED_570
, /* 570 */
5000 TPACPI_LED_OLD
, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5001 TPACPI_LED_NEW
, /* all others */
5004 enum { /* For TPACPI_LED_OLD */
5005 TPACPI_LED_EC_HLCL
= 0x0c, /* EC reg to get led to power on */
5006 TPACPI_LED_EC_HLBL
= 0x0d, /* EC reg to blink a lit led */
5007 TPACPI_LED_EC_HLMS
= 0x0e, /* EC reg to select led to command */
5010 static enum led_access_mode led_supported
;
5012 TPACPI_HANDLE(led
, ec
, "SLED", /* 570 */
5013 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
5014 /* T20-22, X20-21 */
5015 "LED", /* all others */
5018 #define TPACPI_LED_NUMLEDS 16
5019 static struct tpacpi_led_classdev
*tpacpi_leds
;
5020 static enum led_status_t tpacpi_led_state_cache
[TPACPI_LED_NUMLEDS
];
5021 static const char * const tpacpi_led_names
[TPACPI_LED_NUMLEDS
] = {
5022 /* there's a limit of 19 chars + NULL before 2.6.26 */
5024 "tpacpi:orange:batt",
5025 "tpacpi:green:batt",
5026 "tpacpi::dock_active",
5027 "tpacpi::bay_active",
5028 "tpacpi::dock_batt",
5029 "tpacpi::unknown_led",
5031 "tpacpi::dock_status1",
5032 "tpacpi::dock_status2",
5033 "tpacpi::unknown_led2",
5034 "tpacpi::unknown_led3",
5035 "tpacpi::thinkvantage",
5037 #define TPACPI_SAFE_LEDS 0x1081U
5039 static inline bool tpacpi_is_led_restricted(const unsigned int led
)
5041 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5044 return (1U & (TPACPI_SAFE_LEDS
>> led
)) == 0;
5048 static int led_get_status(const unsigned int led
)
5051 enum led_status_t led_s
;
5053 switch (led_supported
) {
5054 case TPACPI_LED_570
:
5055 if (!acpi_evalf(ec_handle
,
5056 &status
, "GLED", "dd", 1 << led
))
5058 led_s
= (status
== 0)?
5063 tpacpi_led_state_cache
[led
] = led_s
;
5072 static int led_set_status(const unsigned int led
,
5073 const enum led_status_t ledstatus
)
5075 /* off, on, blink. Index is led_status_t */
5076 static const unsigned int led_sled_arg1
[] = { 0, 1, 3 };
5077 static const unsigned int led_led_arg1
[] = { 0, 0x80, 0xc0 };
5081 switch (led_supported
) {
5082 case TPACPI_LED_570
:
5084 if (unlikely(led
> 7))
5086 if (unlikely(tpacpi_is_led_restricted(led
)))
5088 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
5089 (1 << led
), led_sled_arg1
[ledstatus
]))
5092 case TPACPI_LED_OLD
:
5093 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
5094 if (unlikely(led
> 7))
5096 if (unlikely(tpacpi_is_led_restricted(led
)))
5098 rc
= ec_write(TPACPI_LED_EC_HLMS
, (1 << led
));
5100 rc
= ec_write(TPACPI_LED_EC_HLBL
,
5101 (ledstatus
== TPACPI_LED_BLINK
) << led
);
5103 rc
= ec_write(TPACPI_LED_EC_HLCL
,
5104 (ledstatus
!= TPACPI_LED_OFF
) << led
);
5106 case TPACPI_LED_NEW
:
5108 if (unlikely(led
>= TPACPI_LED_NUMLEDS
))
5110 if (unlikely(tpacpi_is_led_restricted(led
)))
5112 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
5113 led
, led_led_arg1
[ledstatus
]))
5121 tpacpi_led_state_cache
[led
] = ledstatus
;
5126 static void led_set_status_worker(struct work_struct
*work
)
5128 struct tpacpi_led_classdev
*data
=
5129 container_of(work
, struct tpacpi_led_classdev
, work
);
5131 if (likely(tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
))
5132 led_set_status(data
->led
, data
->new_state
);
5135 static void led_sysfs_set(struct led_classdev
*led_cdev
,
5136 enum led_brightness brightness
)
5138 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
5139 struct tpacpi_led_classdev
, led_classdev
);
5141 if (brightness
== LED_OFF
)
5142 data
->new_state
= TPACPI_LED_OFF
;
5143 else if (tpacpi_led_state_cache
[data
->led
] != TPACPI_LED_BLINK
)
5144 data
->new_state
= TPACPI_LED_ON
;
5146 data
->new_state
= TPACPI_LED_BLINK
;
5148 queue_work(tpacpi_wq
, &data
->work
);
5151 static int led_sysfs_blink_set(struct led_classdev
*led_cdev
,
5152 unsigned long *delay_on
, unsigned long *delay_off
)
5154 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
5155 struct tpacpi_led_classdev
, led_classdev
);
5157 /* Can we choose the flash rate? */
5158 if (*delay_on
== 0 && *delay_off
== 0) {
5159 /* yes. set them to the hardware blink rate (1 Hz) */
5160 *delay_on
= 500; /* ms */
5161 *delay_off
= 500; /* ms */
5162 } else if ((*delay_on
!= 500) || (*delay_off
!= 500))
5165 data
->new_state
= TPACPI_LED_BLINK
;
5166 queue_work(tpacpi_wq
, &data
->work
);
5171 static enum led_brightness
led_sysfs_get(struct led_classdev
*led_cdev
)
5175 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
5176 struct tpacpi_led_classdev
, led_classdev
);
5178 rc
= led_get_status(data
->led
);
5180 if (rc
== TPACPI_LED_OFF
|| rc
< 0)
5181 rc
= LED_OFF
; /* no error handling in led class :( */
5188 static void led_exit(void)
5192 for (i
= 0; i
< TPACPI_LED_NUMLEDS
; i
++) {
5193 if (tpacpi_leds
[i
].led_classdev
.name
)
5194 led_classdev_unregister(&tpacpi_leds
[i
].led_classdev
);
5200 static int __init
tpacpi_init_led(unsigned int led
)
5204 tpacpi_leds
[led
].led
= led
;
5206 /* LEDs with no name don't get registered */
5207 if (!tpacpi_led_names
[led
])
5210 tpacpi_leds
[led
].led_classdev
.brightness_set
= &led_sysfs_set
;
5211 tpacpi_leds
[led
].led_classdev
.blink_set
= &led_sysfs_blink_set
;
5212 if (led_supported
== TPACPI_LED_570
)
5213 tpacpi_leds
[led
].led_classdev
.brightness_get
=
5216 tpacpi_leds
[led
].led_classdev
.name
= tpacpi_led_names
[led
];
5218 INIT_WORK(&tpacpi_leds
[led
].work
, led_set_status_worker
);
5220 rc
= led_classdev_register(&tpacpi_pdev
->dev
,
5221 &tpacpi_leds
[led
].led_classdev
);
5223 tpacpi_leds
[led
].led_classdev
.name
= NULL
;
5228 static const struct tpacpi_quirk led_useful_qtable
[] __initconst
= {
5229 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5230 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5231 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5233 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5234 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5235 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5236 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5237 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5238 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5239 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5240 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5242 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5243 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5244 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5245 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5246 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5248 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5249 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5250 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5251 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5253 /* (1) - may have excess leds enabled on MSB */
5255 /* Defaults (order matters, keep last, don't reorder!) */
5257 .vendor
= PCI_VENDOR_ID_LENOVO
,
5258 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_ANY
,
5261 { /* IBM ThinkPads with no EC version string */
5262 .vendor
= PCI_VENDOR_ID_IBM
,
5263 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_UNKNOWN
,
5266 { /* IBM ThinkPads with EC version string */
5267 .vendor
= PCI_VENDOR_ID_IBM
,
5268 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_ANY
,
5273 #undef TPACPI_LEDQ_IBM
5274 #undef TPACPI_LEDQ_LNV
5276 static int __init
led_init(struct ibm_init_struct
*iibm
)
5280 unsigned long useful_leds
;
5282 vdbg_printk(TPACPI_DBG_INIT
, "initializing LED subdriver\n");
5284 TPACPI_ACPIHANDLE_INIT(led
);
5287 /* led not supported on R30, R31 */
5288 led_supported
= TPACPI_LED_NONE
;
5289 else if (tpacpi_is_ibm() && strlencmp(led_path
, "SLED") == 0)
5291 led_supported
= TPACPI_LED_570
;
5292 else if (tpacpi_is_ibm() && strlencmp(led_path
, "SYSL") == 0)
5293 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5294 led_supported
= TPACPI_LED_OLD
;
5297 led_supported
= TPACPI_LED_NEW
;
5299 vdbg_printk(TPACPI_DBG_INIT
, "LED commands are %s, mode %d\n",
5300 str_supported(led_supported
), led_supported
);
5302 if (led_supported
== TPACPI_LED_NONE
)
5305 tpacpi_leds
= kzalloc(sizeof(*tpacpi_leds
) * TPACPI_LED_NUMLEDS
,
5308 printk(TPACPI_ERR
"Out of memory for LED data\n");
5312 useful_leds
= tpacpi_check_quirks(led_useful_qtable
,
5313 ARRAY_SIZE(led_useful_qtable
));
5315 for (i
= 0; i
< TPACPI_LED_NUMLEDS
; i
++) {
5316 if (!tpacpi_is_led_restricted(i
) &&
5317 test_bit(i
, &useful_leds
)) {
5318 rc
= tpacpi_init_led(i
);
5326 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5327 printk(TPACPI_NOTICE
5328 "warning: userspace override of important "
5329 "firmware LEDs is enabled\n");
5334 #define str_led_status(s) \
5335 ((s) == TPACPI_LED_OFF ? "off" : \
5336 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
5338 static int led_read(struct seq_file
*m
)
5340 if (!led_supported
) {
5341 seq_printf(m
, "status:\t\tnot supported\n");
5344 seq_printf(m
, "status:\t\tsupported\n");
5346 if (led_supported
== TPACPI_LED_570
) {
5349 for (i
= 0; i
< 8; i
++) {
5350 status
= led_get_status(i
);
5353 seq_printf(m
, "%d:\t\t%s\n",
5354 i
, str_led_status(status
));
5358 seq_printf(m
, "commands:\t"
5359 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
5364 static int led_write(char *buf
)
5368 enum led_status_t s
;
5373 while ((cmd
= next_cmd(&buf
))) {
5374 if (sscanf(cmd
, "%d", &led
) != 1 || led
< 0 || led
> 15)
5377 if (strstr(cmd
, "off")) {
5379 } else if (strstr(cmd
, "on")) {
5381 } else if (strstr(cmd
, "blink")) {
5382 s
= TPACPI_LED_BLINK
;
5387 rc
= led_set_status(led
, s
);
5395 static struct ibm_struct led_driver_data
= {
5402 /*************************************************************************
5406 TPACPI_HANDLE(beep
, ec
, "BEEP"); /* all except R30, R31 */
5408 #define TPACPI_BEEP_Q1 0x0001
5410 static const struct tpacpi_quirk beep_quirk_table
[] __initconst
= {
5411 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1
), /* 570 */
5412 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1
), /* 570E - unverified */
5415 static int __init
beep_init(struct ibm_init_struct
*iibm
)
5417 unsigned long quirks
;
5419 vdbg_printk(TPACPI_DBG_INIT
, "initializing beep subdriver\n");
5421 TPACPI_ACPIHANDLE_INIT(beep
);
5423 vdbg_printk(TPACPI_DBG_INIT
, "beep is %s\n",
5424 str_supported(beep_handle
!= NULL
));
5426 quirks
= tpacpi_check_quirks(beep_quirk_table
,
5427 ARRAY_SIZE(beep_quirk_table
));
5429 tp_features
.beep_needs_two_args
= !!(quirks
& TPACPI_BEEP_Q1
);
5431 return (beep_handle
)? 0 : 1;
5434 static int beep_read(struct seq_file
*m
)
5437 seq_printf(m
, "status:\t\tnot supported\n");
5439 seq_printf(m
, "status:\t\tsupported\n");
5440 seq_printf(m
, "commands:\t<cmd> (<cmd> is 0-17)\n");
5446 static int beep_write(char *buf
)
5454 while ((cmd
= next_cmd(&buf
))) {
5455 if (sscanf(cmd
, "%u", &beep_cmd
) == 1 &&
5456 beep_cmd
>= 0 && beep_cmd
<= 17) {
5460 if (tp_features
.beep_needs_two_args
) {
5461 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vdd",
5465 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vd",
5474 static struct ibm_struct beep_driver_data
= {
5477 .write
= beep_write
,
5480 /*************************************************************************
5484 enum thermal_access_mode
{
5485 TPACPI_THERMAL_NONE
= 0, /* No thermal support */
5486 TPACPI_THERMAL_ACPI_TMP07
, /* Use ACPI TMP0-7 */
5487 TPACPI_THERMAL_ACPI_UPDT
, /* Use ACPI TMP0-7 with UPDT */
5488 TPACPI_THERMAL_TPEC_8
, /* Use ACPI EC regs, 8 sensors */
5489 TPACPI_THERMAL_TPEC_16
, /* Use ACPI EC regs, 16 sensors */
5492 enum { /* TPACPI_THERMAL_TPEC_* */
5493 TP_EC_THERMAL_TMP0
= 0x78, /* ACPI EC regs TMP 0..7 */
5494 TP_EC_THERMAL_TMP8
= 0xC0, /* ACPI EC regs TMP 8..15 */
5495 TP_EC_THERMAL_TMP_NA
= -128, /* ACPI EC sensor not available */
5497 TPACPI_THERMAL_SENSOR_NA
= -128000, /* Sensor not available */
5501 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5502 struct ibm_thermal_sensors_struct
{
5503 s32 temp
[TPACPI_MAX_THERMAL_SENSORS
];
5506 static enum thermal_access_mode thermal_read_mode
;
5508 /* idx is zero-based */
5509 static int thermal_get_sensor(int idx
, s32
*value
)
5515 t
= TP_EC_THERMAL_TMP0
;
5517 switch (thermal_read_mode
) {
5518 #if TPACPI_MAX_THERMAL_SENSORS >= 16
5519 case TPACPI_THERMAL_TPEC_16
:
5520 if (idx
>= 8 && idx
<= 15) {
5521 t
= TP_EC_THERMAL_TMP8
;
5526 case TPACPI_THERMAL_TPEC_8
:
5528 if (!acpi_ec_read(t
+ idx
, &tmp
))
5530 *value
= tmp
* 1000;
5535 case TPACPI_THERMAL_ACPI_UPDT
:
5537 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
5538 if (!acpi_evalf(ec_handle
, NULL
, "UPDT", "v"))
5540 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
5542 *value
= (t
- 2732) * 100;
5547 case TPACPI_THERMAL_ACPI_TMP07
:
5549 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
5550 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
5552 if (t
> 127 || t
< -127)
5553 t
= TP_EC_THERMAL_TMP_NA
;
5559 case TPACPI_THERMAL_NONE
:
5567 static int thermal_get_sensors(struct ibm_thermal_sensors_struct
*s
)
5578 if (thermal_read_mode
== TPACPI_THERMAL_TPEC_16
)
5581 for (i
= 0 ; i
< n
; i
++) {
5582 res
= thermal_get_sensor(i
, &s
->temp
[i
]);
5590 static void thermal_dump_all_sensors(void)
5593 struct ibm_thermal_sensors_struct t
;
5595 n
= thermal_get_sensors(&t
);
5599 printk(TPACPI_NOTICE
5600 "temperatures (Celsius):");
5602 for (i
= 0; i
< n
; i
++) {
5603 if (t
.temp
[i
] != TPACPI_THERMAL_SENSOR_NA
)
5604 printk(KERN_CONT
" %d", (int)(t
.temp
[i
] / 1000));
5606 printk(KERN_CONT
" N/A");
5609 printk(KERN_CONT
"\n");
5612 /* sysfs temp##_input -------------------------------------------------- */
5614 static ssize_t
thermal_temp_input_show(struct device
*dev
,
5615 struct device_attribute
*attr
,
5618 struct sensor_device_attribute
*sensor_attr
=
5619 to_sensor_dev_attr(attr
);
5620 int idx
= sensor_attr
->index
;
5624 res
= thermal_get_sensor(idx
, &value
);
5627 if (value
== TPACPI_THERMAL_SENSOR_NA
)
5630 return snprintf(buf
, PAGE_SIZE
, "%d\n", value
);
5633 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
5634 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5635 thermal_temp_input_show, NULL, _idxB)
5637 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input
[] = {
5638 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5639 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5640 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5641 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5642 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5643 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5644 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5645 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5646 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5647 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5648 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5649 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5650 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5651 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5652 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5653 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5656 #define THERMAL_ATTRS(X) \
5657 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5659 static struct attribute
*thermal_temp_input_attr
[] = {
5679 static const struct attribute_group thermal_temp_input16_group
= {
5680 .attrs
= thermal_temp_input_attr
5683 static const struct attribute_group thermal_temp_input8_group
= {
5684 .attrs
= &thermal_temp_input_attr
[8]
5687 #undef THERMAL_SENSOR_ATTR_TEMP
5688 #undef THERMAL_ATTRS
5690 /* --------------------------------------------------------------------- */
5692 static int __init
thermal_init(struct ibm_init_struct
*iibm
)
5699 vdbg_printk(TPACPI_DBG_INIT
, "initializing thermal subdriver\n");
5701 acpi_tmp7
= acpi_evalf(ec_handle
, NULL
, "TMP7", "qv");
5703 if (thinkpad_id
.ec_model
) {
5705 * Direct EC access mode: sensors at registers
5706 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5707 * non-implemented, thermal sensors return 0x80 when
5712 for (i
= 0; i
< 8; i
++) {
5713 if (acpi_ec_read(TP_EC_THERMAL_TMP0
+ i
, &t
)) {
5719 if (acpi_ec_read(TP_EC_THERMAL_TMP8
+ i
, &t
)) {
5727 /* This is sheer paranoia, but we handle it anyway */
5730 "ThinkPad ACPI EC access misbehaving, "
5731 "falling back to ACPI TMPx access "
5733 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5736 "ThinkPad ACPI EC access misbehaving, "
5737 "disabling thermal sensors access\n");
5738 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5743 TPACPI_THERMAL_TPEC_16
: TPACPI_THERMAL_TPEC_8
;
5745 } else if (acpi_tmp7
) {
5746 if (tpacpi_is_ibm() &&
5747 acpi_evalf(ec_handle
, NULL
, "UPDT", "qv")) {
5748 /* 600e/x, 770e, 770x */
5749 thermal_read_mode
= TPACPI_THERMAL_ACPI_UPDT
;
5751 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
5752 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5755 /* temperatures not supported on 570, G4x, R30, R31, R32 */
5756 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5759 vdbg_printk(TPACPI_DBG_INIT
, "thermal is %s, mode %d\n",
5760 str_supported(thermal_read_mode
!= TPACPI_THERMAL_NONE
),
5763 switch (thermal_read_mode
) {
5764 case TPACPI_THERMAL_TPEC_16
:
5765 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5766 &thermal_temp_input16_group
);
5770 case TPACPI_THERMAL_TPEC_8
:
5771 case TPACPI_THERMAL_ACPI_TMP07
:
5772 case TPACPI_THERMAL_ACPI_UPDT
:
5773 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5774 &thermal_temp_input8_group
);
5778 case TPACPI_THERMAL_NONE
:
5786 static void thermal_exit(void)
5788 switch (thermal_read_mode
) {
5789 case TPACPI_THERMAL_TPEC_16
:
5790 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5791 &thermal_temp_input16_group
);
5793 case TPACPI_THERMAL_TPEC_8
:
5794 case TPACPI_THERMAL_ACPI_TMP07
:
5795 case TPACPI_THERMAL_ACPI_UPDT
:
5796 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5797 &thermal_temp_input8_group
);
5799 case TPACPI_THERMAL_NONE
:
5805 static int thermal_read(struct seq_file
*m
)
5808 struct ibm_thermal_sensors_struct t
;
5810 n
= thermal_get_sensors(&t
);
5811 if (unlikely(n
< 0))
5814 seq_printf(m
, "temperatures:\t");
5817 for (i
= 0; i
< (n
- 1); i
++)
5818 seq_printf(m
, "%d ", t
.temp
[i
] / 1000);
5819 seq_printf(m
, "%d\n", t
.temp
[i
] / 1000);
5821 seq_printf(m
, "not supported\n");
5826 static struct ibm_struct thermal_driver_data
= {
5828 .read
= thermal_read
,
5829 .exit
= thermal_exit
,
5832 /*************************************************************************
5836 static u8 ecdump_regs
[256];
5838 static int ecdump_read(struct seq_file
*m
)
5844 " +00 +01 +02 +03 +04 +05 +06 +07"
5845 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5846 for (i
= 0; i
< 256; i
+= 16) {
5847 seq_printf(m
, "EC 0x%02x:", i
);
5848 for (j
= 0; j
< 16; j
++) {
5849 if (!acpi_ec_read(i
+ j
, &v
))
5851 if (v
!= ecdump_regs
[i
+ j
])
5852 seq_printf(m
, " *%02x", v
);
5854 seq_printf(m
, " %02x", v
);
5855 ecdump_regs
[i
+ j
] = v
;
5862 /* These are way too dangerous to advertise openly... */
5864 seq_printf(m
, "commands:\t0x<offset> 0x<value>"
5865 " (<offset> is 00-ff, <value> is 00-ff)\n");
5866 seq_printf(m
, "commands:\t0x<offset> <value> "
5867 " (<offset> is 00-ff, <value> is 0-255)\n");
5872 static int ecdump_write(char *buf
)
5877 while ((cmd
= next_cmd(&buf
))) {
5878 if (sscanf(cmd
, "0x%x 0x%x", &i
, &v
) == 2) {
5880 } else if (sscanf(cmd
, "0x%x %u", &i
, &v
) == 2) {
5884 if (i
>= 0 && i
< 256 && v
>= 0 && v
< 256) {
5885 if (!acpi_ec_write(i
, v
))
5894 static struct ibm_struct ecdump_driver_data
= {
5896 .read
= ecdump_read
,
5897 .write
= ecdump_write
,
5898 .flags
.experimental
= 1,
5901 /*************************************************************************
5902 * Backlight/brightness subdriver
5905 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5908 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5909 * CMOS NVRAM byte 0x5E, bits 0-3.
5911 * EC HBRV (0x31) has the following layout
5912 * Bit 7: unknown function
5913 * Bit 6: unknown function
5914 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5915 * Bit 4: must be set to zero to avoid problems
5916 * Bit 3-0: backlight brightness level
5918 * brightness_get_raw returns status data in the HBRV layout
5920 * WARNING: The X61 has been verified to use HBRV for something else, so
5921 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
5922 * testing on the very early *60 Lenovo models...
5926 TP_EC_BACKLIGHT
= 0x31,
5928 /* TP_EC_BACKLIGHT bitmasks */
5929 TP_EC_BACKLIGHT_LVLMSK
= 0x1F,
5930 TP_EC_BACKLIGHT_CMDMSK
= 0xE0,
5931 TP_EC_BACKLIGHT_MAPSW
= 0x20,
5934 enum tpacpi_brightness_access_mode
{
5935 TPACPI_BRGHT_MODE_AUTO
= 0, /* Not implemented yet */
5936 TPACPI_BRGHT_MODE_EC
, /* EC control */
5937 TPACPI_BRGHT_MODE_UCMS_STEP
, /* UCMS step-based control */
5938 TPACPI_BRGHT_MODE_ECNVRAM
, /* EC control w/ NVRAM store */
5939 TPACPI_BRGHT_MODE_MAX
5942 static struct backlight_device
*ibm_backlight_device
;
5944 static enum tpacpi_brightness_access_mode brightness_mode
=
5945 TPACPI_BRGHT_MODE_MAX
;
5947 static unsigned int brightness_enable
= 2; /* 2 = auto, 0 = no, 1 = yes */
5949 static struct mutex brightness_mutex
;
5951 /* NVRAM brightness access,
5952 * call with brightness_mutex held! */
5953 static unsigned int tpacpi_brightness_nvram_get(void)
5957 lnvram
= (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
)
5958 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
5959 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
5960 lnvram
&= bright_maxlvl
;
5965 static void tpacpi_brightness_checkpoint_nvram(void)
5970 if (brightness_mode
!= TPACPI_BRGHT_MODE_ECNVRAM
)
5973 vdbg_printk(TPACPI_DBG_BRGHT
,
5974 "trying to checkpoint backlight level to NVRAM...\n");
5976 if (mutex_lock_killable(&brightness_mutex
) < 0)
5979 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
5981 lec
&= TP_EC_BACKLIGHT_LVLMSK
;
5982 b_nvram
= nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
);
5984 if (lec
!= ((b_nvram
& TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
5985 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
)) {
5986 /* NVRAM needs update */
5987 b_nvram
&= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS
<<
5988 TP_NVRAM_POS_LEVEL_BRIGHTNESS
);
5990 nvram_write_byte(b_nvram
, TP_NVRAM_ADDR_BRIGHTNESS
);
5991 dbg_printk(TPACPI_DBG_BRGHT
,
5992 "updated NVRAM backlight level to %u (0x%02x)\n",
5993 (unsigned int) lec
, (unsigned int) b_nvram
);
5995 vdbg_printk(TPACPI_DBG_BRGHT
,
5996 "NVRAM backlight level already is %u (0x%02x)\n",
5997 (unsigned int) lec
, (unsigned int) b_nvram
);
6000 mutex_unlock(&brightness_mutex
);
6004 /* call with brightness_mutex held! */
6005 static int tpacpi_brightness_get_raw(int *status
)
6009 switch (brightness_mode
) {
6010 case TPACPI_BRGHT_MODE_UCMS_STEP
:
6011 *status
= tpacpi_brightness_nvram_get();
6013 case TPACPI_BRGHT_MODE_EC
:
6014 case TPACPI_BRGHT_MODE_ECNVRAM
:
6015 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
6024 /* call with brightness_mutex held! */
6025 /* do NOT call with illegal backlight level value */
6026 static int tpacpi_brightness_set_ec(unsigned int value
)
6030 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
6033 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT
,
6034 (lec
& TP_EC_BACKLIGHT_CMDMSK
) |
6035 (value
& TP_EC_BACKLIGHT_LVLMSK
))))
6041 /* call with brightness_mutex held! */
6042 static int tpacpi_brightness_set_ucmsstep(unsigned int value
)
6045 unsigned int current_value
, i
;
6047 current_value
= tpacpi_brightness_nvram_get();
6049 if (value
== current_value
)
6052 cmos_cmd
= (value
> current_value
) ?
6053 TP_CMOS_BRIGHTNESS_UP
:
6054 TP_CMOS_BRIGHTNESS_DOWN
;
6055 inc
= (value
> current_value
) ? 1 : -1;
6057 for (i
= current_value
; i
!= value
; i
+= inc
)
6058 if (issue_thinkpad_cmos_command(cmos_cmd
))
6064 /* May return EINTR which can always be mapped to ERESTARTSYS */
6065 static int brightness_set(unsigned int value
)
6069 if (value
> bright_maxlvl
|| value
< 0)
6072 vdbg_printk(TPACPI_DBG_BRGHT
,
6073 "set backlight level to %d\n", value
);
6075 res
= mutex_lock_killable(&brightness_mutex
);
6079 switch (brightness_mode
) {
6080 case TPACPI_BRGHT_MODE_EC
:
6081 case TPACPI_BRGHT_MODE_ECNVRAM
:
6082 res
= tpacpi_brightness_set_ec(value
);
6084 case TPACPI_BRGHT_MODE_UCMS_STEP
:
6085 res
= tpacpi_brightness_set_ucmsstep(value
);
6091 mutex_unlock(&brightness_mutex
);
6095 /* sysfs backlight class ----------------------------------------------- */
6097 static int brightness_update_status(struct backlight_device
*bd
)
6099 unsigned int level
=
6100 (bd
->props
.fb_blank
== FB_BLANK_UNBLANK
&&
6101 bd
->props
.power
== FB_BLANK_UNBLANK
) ?
6102 bd
->props
.brightness
: 0;
6104 dbg_printk(TPACPI_DBG_BRGHT
,
6105 "backlight: attempt to set level to %d\n",
6108 /* it is the backlight class's job (caller) to handle
6109 * EINTR and other errors properly */
6110 return brightness_set(level
);
6113 static int brightness_get(struct backlight_device
*bd
)
6117 res
= mutex_lock_killable(&brightness_mutex
);
6121 res
= tpacpi_brightness_get_raw(&status
);
6123 mutex_unlock(&brightness_mutex
);
6128 return status
& TP_EC_BACKLIGHT_LVLMSK
;
6131 static void tpacpi_brightness_notify_change(void)
6133 backlight_force_update(ibm_backlight_device
,
6134 BACKLIGHT_UPDATE_HOTKEY
);
6137 static struct backlight_ops ibm_backlight_data
= {
6138 .get_brightness
= brightness_get
,
6139 .update_status
= brightness_update_status
,
6142 /* --------------------------------------------------------------------- */
6144 static int __init
tpacpi_query_bcl_levels(acpi_handle handle
)
6146 struct acpi_buffer buffer
= { ACPI_ALLOCATE_BUFFER
, NULL
};
6147 union acpi_object
*obj
;
6150 if (ACPI_SUCCESS(acpi_evaluate_object(handle
, NULL
, NULL
, &buffer
))) {
6151 obj
= (union acpi_object
*)buffer
.pointer
;
6152 if (!obj
|| (obj
->type
!= ACPI_TYPE_PACKAGE
)) {
6153 printk(TPACPI_ERR
"Unknown _BCL data, "
6154 "please report this to %s\n", TPACPI_MAIL
);
6157 rc
= obj
->package
.count
;
6163 kfree(buffer
.pointer
);
6167 static acpi_status __init
tpacpi_acpi_walk_find_bcl(acpi_handle handle
,
6168 u32 lvl
, void *context
, void **rv
)
6170 char name
[ACPI_PATH_SEGMENT_LENGTH
];
6171 struct acpi_buffer buffer
= { sizeof(name
), &name
};
6173 if (ACPI_SUCCESS(acpi_get_name(handle
, ACPI_SINGLE_NAME
, &buffer
)) &&
6174 !strncmp("_BCL", name
, sizeof(name
) - 1)) {
6175 BUG_ON(!rv
|| !*rv
);
6176 **(int **)rv
= tpacpi_query_bcl_levels(handle
);
6177 return AE_CTRL_TERMINATE
;
6184 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
6186 static unsigned int __init
tpacpi_check_std_acpi_brightness_support(void)
6190 void *bcl_ptr
= &bcl_levels
;
6193 TPACPI_ACPIHANDLE_INIT(vid
);
6199 * Search for a _BCL method, and execute it. This is safe on all
6200 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
6201 * BIOS in ACPI backlight control mode. We do NOT have to care
6202 * about calling the _BCL method in an enabled video device, any
6203 * will do for our purposes.
6206 status
= acpi_walk_namespace(ACPI_TYPE_METHOD
, vid_handle
, 3,
6207 tpacpi_acpi_walk_find_bcl
, NULL
, NULL
,
6210 if (ACPI_SUCCESS(status
) && bcl_levels
> 2) {
6211 tp_features
.bright_acpimode
= 1;
6212 return bcl_levels
- 2;
6219 * These are only useful for models that have only one possibility
6220 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6223 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6224 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6225 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6227 static const struct tpacpi_quirk brightness_quirk_table
[] __initconst
= {
6228 /* Models with ATI GPUs known to require ECNVRAM mode */
6229 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC
), /* T43/p ATI */
6231 /* Models with ATI GPUs that can use ECNVRAM */
6232 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC
), /* R50,51 T40-42 */
6233 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6234 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC
), /* R52 */
6235 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6237 /* Models with Intel Extreme Graphics 2 */
6238 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC
), /* X40 */
6239 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6240 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6242 /* Models with Intel GMA900 */
6243 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC
), /* T43, R52 */
6244 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC
), /* X41 */
6245 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC
), /* X41 Tablet */
6249 * Returns < 0 for error, otherwise sets tp_features.bright_*
6250 * and bright_maxlvl.
6252 static void __init
tpacpi_detect_brightness_capabilities(void)
6256 vdbg_printk(TPACPI_DBG_INIT
,
6257 "detecting firmware brightness interface capabilities\n");
6259 /* we could run a quirks check here (same table used by
6260 * brightness_init) if needed */
6263 * We always attempt to detect acpi support, so as to switch
6264 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6265 * going to publish a backlight interface
6267 b
= tpacpi_check_std_acpi_brightness_support();
6272 "detected a 16-level brightness capable ThinkPad\n");
6278 "detected a 8-level brightness capable ThinkPad\n");
6282 "Unsupported brightness interface, "
6283 "please contact %s\n", TPACPI_MAIL
);
6284 tp_features
.bright_unkfw
= 1;
6285 bright_maxlvl
= b
- 1;
6289 static int __init
brightness_init(struct ibm_init_struct
*iibm
)
6291 struct backlight_properties props
;
6293 unsigned long quirks
;
6295 vdbg_printk(TPACPI_DBG_INIT
, "initializing brightness subdriver\n");
6297 mutex_init(&brightness_mutex
);
6299 quirks
= tpacpi_check_quirks(brightness_quirk_table
,
6300 ARRAY_SIZE(brightness_quirk_table
));
6302 /* tpacpi_detect_brightness_capabilities() must have run already */
6304 /* if it is unknown, we don't handle it: it wouldn't be safe */
6305 if (tp_features
.bright_unkfw
)
6308 if (tp_features
.bright_acpimode
) {
6309 if (acpi_video_backlight_support()) {
6310 if (brightness_enable
> 1) {
6311 printk(TPACPI_NOTICE
6312 "Standard ACPI backlight interface "
6313 "available, not loading native one.\n");
6315 } else if (brightness_enable
== 1) {
6316 printk(TPACPI_NOTICE
6317 "Backlight control force enabled, even if standard "
6318 "ACPI backlight interface is available\n");
6321 if (brightness_enable
> 1) {
6322 printk(TPACPI_NOTICE
6323 "Standard ACPI backlight interface not "
6324 "available, thinkpad_acpi native "
6325 "brightness control enabled\n");
6330 if (!brightness_enable
) {
6331 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_BRGHT
,
6332 "brightness support disabled by "
6333 "module parameter\n");
6338 * Check for module parameter bogosity, note that we
6339 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6340 * able to detect "unspecified"
6342 if (brightness_mode
> TPACPI_BRGHT_MODE_MAX
)
6345 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6346 if (brightness_mode
== TPACPI_BRGHT_MODE_AUTO
||
6347 brightness_mode
== TPACPI_BRGHT_MODE_MAX
) {
6348 if (quirks
& TPACPI_BRGHT_Q_EC
)
6349 brightness_mode
= TPACPI_BRGHT_MODE_ECNVRAM
;
6351 brightness_mode
= TPACPI_BRGHT_MODE_UCMS_STEP
;
6353 dbg_printk(TPACPI_DBG_BRGHT
,
6354 "driver auto-selected brightness_mode=%d\n",
6359 if (!tpacpi_is_ibm() &&
6360 (brightness_mode
== TPACPI_BRGHT_MODE_ECNVRAM
||
6361 brightness_mode
== TPACPI_BRGHT_MODE_EC
))
6364 if (tpacpi_brightness_get_raw(&b
) < 0)
6367 memset(&props
, 0, sizeof(struct backlight_properties
));
6368 props
.max_brightness
= bright_maxlvl
;
6369 props
.brightness
= b
& TP_EC_BACKLIGHT_LVLMSK
;
6370 ibm_backlight_device
= backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME
,
6372 &ibm_backlight_data
,
6374 if (IS_ERR(ibm_backlight_device
)) {
6375 int rc
= PTR_ERR(ibm_backlight_device
);
6376 ibm_backlight_device
= NULL
;
6377 printk(TPACPI_ERR
"Could not register backlight device\n");
6380 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_BRGHT
,
6381 "brightness is supported\n");
6383 if (quirks
& TPACPI_BRGHT_Q_ASK
) {
6384 printk(TPACPI_NOTICE
6385 "brightness: will use unverified default: "
6386 "brightness_mode=%d\n", brightness_mode
);
6387 printk(TPACPI_NOTICE
6388 "brightness: please report to %s whether it works well "
6389 "or not on your ThinkPad\n", TPACPI_MAIL
);
6392 backlight_update_status(ibm_backlight_device
);
6394 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_BRGHT
,
6395 "brightness: registering brightness hotkeys "
6396 "as change notification\n");
6397 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6398 | TP_ACPI_HKEY_BRGHTUP_MASK
6399 | TP_ACPI_HKEY_BRGHTDWN_MASK
);;
6403 static void brightness_suspend(pm_message_t state
)
6405 tpacpi_brightness_checkpoint_nvram();
6408 static void brightness_shutdown(void)
6410 tpacpi_brightness_checkpoint_nvram();
6413 static void brightness_exit(void)
6415 if (ibm_backlight_device
) {
6416 vdbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_BRGHT
,
6417 "calling backlight_device_unregister()\n");
6418 backlight_device_unregister(ibm_backlight_device
);
6421 tpacpi_brightness_checkpoint_nvram();
6424 static int brightness_read(struct seq_file
*m
)
6428 level
= brightness_get(NULL
);
6430 seq_printf(m
, "level:\t\tunreadable\n");
6432 seq_printf(m
, "level:\t\t%d\n", level
);
6433 seq_printf(m
, "commands:\tup, down\n");
6434 seq_printf(m
, "commands:\tlevel <level> (<level> is 0-%d)\n",
6441 static int brightness_write(char *buf
)
6447 level
= brightness_get(NULL
);
6451 while ((cmd
= next_cmd(&buf
))) {
6452 if (strlencmp(cmd
, "up") == 0) {
6453 if (level
< bright_maxlvl
)
6455 } else if (strlencmp(cmd
, "down") == 0) {
6458 } else if (sscanf(cmd
, "level %d", &level
) == 1 &&
6459 level
>= 0 && level
<= bright_maxlvl
) {
6465 tpacpi_disclose_usertask("procfs brightness",
6466 "set level to %d\n", level
);
6469 * Now we know what the final level should be, so we try to set it.
6470 * Doing it this way makes the syscall restartable in case of EINTR
6472 rc
= brightness_set(level
);
6473 if (!rc
&& ibm_backlight_device
)
6474 backlight_force_update(ibm_backlight_device
,
6475 BACKLIGHT_UPDATE_SYSFS
);
6476 return (rc
== -EINTR
)? -ERESTARTSYS
: rc
;
6479 static struct ibm_struct brightness_driver_data
= {
6480 .name
= "brightness",
6481 .read
= brightness_read
,
6482 .write
= brightness_write
,
6483 .exit
= brightness_exit
,
6484 .suspend
= brightness_suspend
,
6485 .shutdown
= brightness_shutdown
,
6488 /*************************************************************************
6493 * IBM ThinkPads have a simple volume controller with MUTE gating.
6494 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
6496 * Since the *61 series (and probably also the later *60 series), Lenovo
6497 * ThinkPads only implement the MUTE gate.
6500 * Bit 6: MUTE (1 mutes sound)
6502 * Other bits should be zero as far as we know.
6504 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
6505 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
6506 * such as bit 7 which is used to detect repeated presses of MUTE,
6507 * and we leave them unchanged.
6510 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
6512 #define TPACPI_ALSA_DRVNAME "ThinkPad EC"
6513 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
6514 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
6516 static int alsa_index
= ~((1 << (SNDRV_CARDS
- 3)) - 1); /* last three slots */
6517 static char *alsa_id
= "ThinkPadEC";
6518 static int alsa_enable
= SNDRV_DEFAULT_ENABLE1
;
6520 struct tpacpi_alsa_data
{
6521 struct snd_card
*card
;
6522 struct snd_ctl_elem_id
*ctl_mute_id
;
6523 struct snd_ctl_elem_id
*ctl_vol_id
;
6526 static struct snd_card
*alsa_card
;
6531 /* TP_EC_AUDIO bits */
6532 TP_EC_AUDIO_MUTESW
= 6,
6534 /* TP_EC_AUDIO bitmasks */
6535 TP_EC_AUDIO_LVL_MSK
= 0x0F,
6536 TP_EC_AUDIO_MUTESW_MSK
= (1 << TP_EC_AUDIO_MUTESW
),
6538 /* Maximum volume */
6539 TP_EC_VOLUME_MAX
= 14,
6542 enum tpacpi_volume_access_mode
{
6543 TPACPI_VOL_MODE_AUTO
= 0, /* Not implemented yet */
6544 TPACPI_VOL_MODE_EC
, /* Pure EC control */
6545 TPACPI_VOL_MODE_UCMS_STEP
, /* UCMS step-based control: N/A */
6546 TPACPI_VOL_MODE_ECNVRAM
, /* EC control w/ NVRAM store */
6550 enum tpacpi_volume_capabilities
{
6551 TPACPI_VOL_CAP_AUTO
= 0, /* Use white/blacklist */
6552 TPACPI_VOL_CAP_VOLMUTE
, /* Output vol and mute */
6553 TPACPI_VOL_CAP_MUTEONLY
, /* Output mute only */
6557 static enum tpacpi_volume_access_mode volume_mode
=
6558 TPACPI_VOL_MODE_MAX
;
6560 static enum tpacpi_volume_capabilities volume_capabilities
;
6561 static int volume_control_allowed
;
6564 * Used to syncronize writers to TP_EC_AUDIO and
6565 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
6567 static struct mutex volume_mutex
;
6569 static void tpacpi_volume_checkpoint_nvram(void)
6575 if (volume_mode
!= TPACPI_VOL_MODE_ECNVRAM
)
6577 if (!volume_control_allowed
)
6580 vdbg_printk(TPACPI_DBG_MIXER
,
6581 "trying to checkpoint mixer state to NVRAM...\n");
6583 if (tp_features
.mixer_no_level_control
)
6584 ec_mask
= TP_EC_AUDIO_MUTESW_MSK
;
6586 ec_mask
= TP_EC_AUDIO_MUTESW_MSK
| TP_EC_AUDIO_LVL_MSK
;
6588 if (mutex_lock_killable(&volume_mutex
) < 0)
6591 if (unlikely(!acpi_ec_read(TP_EC_AUDIO
, &lec
)))
6594 b_nvram
= nvram_read_byte(TP_NVRAM_ADDR_MIXER
);
6596 if (lec
!= (b_nvram
& ec_mask
)) {
6597 /* NVRAM needs update */
6598 b_nvram
&= ~ec_mask
;
6600 nvram_write_byte(b_nvram
, TP_NVRAM_ADDR_MIXER
);
6601 dbg_printk(TPACPI_DBG_MIXER
,
6602 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
6603 (unsigned int) lec
, (unsigned int) b_nvram
);
6605 vdbg_printk(TPACPI_DBG_MIXER
,
6606 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
6607 (unsigned int) lec
, (unsigned int) b_nvram
);
6611 mutex_unlock(&volume_mutex
);
6614 static int volume_get_status_ec(u8
*status
)
6618 if (!acpi_ec_read(TP_EC_AUDIO
, &s
))
6623 dbg_printk(TPACPI_DBG_MIXER
, "status 0x%02x\n", s
);
6628 static int volume_get_status(u8
*status
)
6630 return volume_get_status_ec(status
);
6633 static int volume_set_status_ec(const u8 status
)
6635 if (!acpi_ec_write(TP_EC_AUDIO
, status
))
6638 dbg_printk(TPACPI_DBG_MIXER
, "set EC mixer to 0x%02x\n", status
);
6643 static int volume_set_status(const u8 status
)
6645 return volume_set_status_ec(status
);
6648 /* returns < 0 on error, 0 on no change, 1 on change */
6649 static int __volume_set_mute_ec(const bool mute
)
6654 if (mutex_lock_killable(&volume_mutex
) < 0)
6657 rc
= volume_get_status_ec(&s
);
6661 n
= (mute
) ? s
| TP_EC_AUDIO_MUTESW_MSK
:
6662 s
& ~TP_EC_AUDIO_MUTESW_MSK
;
6665 rc
= volume_set_status_ec(n
);
6671 mutex_unlock(&volume_mutex
);
6675 static int volume_alsa_set_mute(const bool mute
)
6677 dbg_printk(TPACPI_DBG_MIXER
, "ALSA: trying to %smute\n",
6678 (mute
) ? "" : "un");
6679 return __volume_set_mute_ec(mute
);
6682 static int volume_set_mute(const bool mute
)
6686 dbg_printk(TPACPI_DBG_MIXER
, "trying to %smute\n",
6687 (mute
) ? "" : "un");
6689 rc
= __volume_set_mute_ec(mute
);
6690 return (rc
< 0) ? rc
: 0;
6693 /* returns < 0 on error, 0 on no change, 1 on change */
6694 static int __volume_set_volume_ec(const u8 vol
)
6699 if (vol
> TP_EC_VOLUME_MAX
)
6702 if (mutex_lock_killable(&volume_mutex
) < 0)
6705 rc
= volume_get_status_ec(&s
);
6709 n
= (s
& ~TP_EC_AUDIO_LVL_MSK
) | vol
;
6712 rc
= volume_set_status_ec(n
);
6718 mutex_unlock(&volume_mutex
);
6722 static int volume_alsa_set_volume(const u8 vol
)
6724 dbg_printk(TPACPI_DBG_MIXER
,
6725 "ALSA: trying to set volume level to %hu\n", vol
);
6726 return __volume_set_volume_ec(vol
);
6729 static void volume_alsa_notify_change(void)
6731 struct tpacpi_alsa_data
*d
;
6733 if (alsa_card
&& alsa_card
->private_data
) {
6734 d
= alsa_card
->private_data
;
6736 snd_ctl_notify(alsa_card
,
6737 SNDRV_CTL_EVENT_MASK_VALUE
,
6740 snd_ctl_notify(alsa_card
,
6741 SNDRV_CTL_EVENT_MASK_VALUE
,
6746 static int volume_alsa_vol_info(struct snd_kcontrol
*kcontrol
,
6747 struct snd_ctl_elem_info
*uinfo
)
6749 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
6751 uinfo
->value
.integer
.min
= 0;
6752 uinfo
->value
.integer
.max
= TP_EC_VOLUME_MAX
;
6756 static int volume_alsa_vol_get(struct snd_kcontrol
*kcontrol
,
6757 struct snd_ctl_elem_value
*ucontrol
)
6762 rc
= volume_get_status(&s
);
6766 ucontrol
->value
.integer
.value
[0] = s
& TP_EC_AUDIO_LVL_MSK
;
6770 static int volume_alsa_vol_put(struct snd_kcontrol
*kcontrol
,
6771 struct snd_ctl_elem_value
*ucontrol
)
6773 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
6774 ucontrol
->value
.integer
.value
[0]);
6775 return volume_alsa_set_volume(ucontrol
->value
.integer
.value
[0]);
6778 #define volume_alsa_mute_info snd_ctl_boolean_mono_info
6780 static int volume_alsa_mute_get(struct snd_kcontrol
*kcontrol
,
6781 struct snd_ctl_elem_value
*ucontrol
)
6786 rc
= volume_get_status(&s
);
6790 ucontrol
->value
.integer
.value
[0] =
6791 (s
& TP_EC_AUDIO_MUTESW_MSK
) ? 0 : 1;
6795 static int volume_alsa_mute_put(struct snd_kcontrol
*kcontrol
,
6796 struct snd_ctl_elem_value
*ucontrol
)
6798 tpacpi_disclose_usertask("ALSA", "%smute\n",
6799 ucontrol
->value
.integer
.value
[0] ?
6801 return volume_alsa_set_mute(!ucontrol
->value
.integer
.value
[0]);
6804 static struct snd_kcontrol_new volume_alsa_control_vol __devinitdata
= {
6805 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
6806 .name
= "Console Playback Volume",
6808 .access
= SNDRV_CTL_ELEM_ACCESS_READ
,
6809 .info
= volume_alsa_vol_info
,
6810 .get
= volume_alsa_vol_get
,
6813 static struct snd_kcontrol_new volume_alsa_control_mute __devinitdata
= {
6814 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
6815 .name
= "Console Playback Switch",
6817 .access
= SNDRV_CTL_ELEM_ACCESS_READ
,
6818 .info
= volume_alsa_mute_info
,
6819 .get
= volume_alsa_mute_get
,
6822 static void volume_suspend(pm_message_t state
)
6824 tpacpi_volume_checkpoint_nvram();
6827 static void volume_resume(void)
6829 volume_alsa_notify_change();
6832 static void volume_shutdown(void)
6834 tpacpi_volume_checkpoint_nvram();
6837 static void volume_exit(void)
6840 snd_card_free(alsa_card
);
6844 tpacpi_volume_checkpoint_nvram();
6847 static int __init
volume_create_alsa_mixer(void)
6849 struct snd_card
*card
;
6850 struct tpacpi_alsa_data
*data
;
6851 struct snd_kcontrol
*ctl_vol
;
6852 struct snd_kcontrol
*ctl_mute
;
6855 rc
= snd_card_create(alsa_index
, alsa_id
, THIS_MODULE
,
6856 sizeof(struct tpacpi_alsa_data
), &card
);
6857 if (rc
< 0 || !card
) {
6859 "Failed to create ALSA card structures: %d\n", rc
);
6863 BUG_ON(!card
->private_data
);
6864 data
= card
->private_data
;
6867 strlcpy(card
->driver
, TPACPI_ALSA_DRVNAME
,
6868 sizeof(card
->driver
));
6869 strlcpy(card
->shortname
, TPACPI_ALSA_SHRTNAME
,
6870 sizeof(card
->shortname
));
6871 snprintf(card
->mixername
, sizeof(card
->mixername
), "ThinkPad EC %s",
6872 (thinkpad_id
.ec_version_str
) ?
6873 thinkpad_id
.ec_version_str
: "(unknown)");
6874 snprintf(card
->longname
, sizeof(card
->longname
),
6875 "%s at EC reg 0x%02x, fw %s", card
->shortname
, TP_EC_AUDIO
,
6876 (thinkpad_id
.ec_version_str
) ?
6877 thinkpad_id
.ec_version_str
: "unknown");
6879 if (volume_control_allowed
) {
6880 volume_alsa_control_vol
.put
= volume_alsa_vol_put
;
6881 volume_alsa_control_vol
.access
=
6882 SNDRV_CTL_ELEM_ACCESS_READWRITE
;
6884 volume_alsa_control_mute
.put
= volume_alsa_mute_put
;
6885 volume_alsa_control_mute
.access
=
6886 SNDRV_CTL_ELEM_ACCESS_READWRITE
;
6889 if (!tp_features
.mixer_no_level_control
) {
6890 ctl_vol
= snd_ctl_new1(&volume_alsa_control_vol
, NULL
);
6891 rc
= snd_ctl_add(card
, ctl_vol
);
6894 "Failed to create ALSA volume control: %d\n",
6898 data
->ctl_vol_id
= &ctl_vol
->id
;
6901 ctl_mute
= snd_ctl_new1(&volume_alsa_control_mute
, NULL
);
6902 rc
= snd_ctl_add(card
, ctl_mute
);
6904 printk(TPACPI_ERR
"Failed to create ALSA mute control: %d\n",
6908 data
->ctl_mute_id
= &ctl_mute
->id
;
6910 snd_card_set_dev(card
, &tpacpi_pdev
->dev
);
6911 rc
= snd_card_register(card
);
6913 printk(TPACPI_ERR
"Failed to register ALSA card: %d\n", rc
);
6921 snd_card_free(card
);
6925 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
6926 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
6928 static const struct tpacpi_quirk volume_quirk_table
[] __initconst
= {
6929 /* Whitelist volume level on all IBM by default */
6930 { .vendor
= PCI_VENDOR_ID_IBM
,
6931 .bios
= TPACPI_MATCH_ANY
,
6932 .ec
= TPACPI_MATCH_ANY
,
6933 .quirks
= TPACPI_VOL_Q_LEVEL
},
6935 /* Lenovo models with volume control (needs confirmation) */
6936 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL
), /* R60/i */
6937 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL
), /* R60e/i */
6938 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL
), /* T60/p */
6939 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL
), /* X60/s */
6940 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL
), /* X60t */
6941 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL
), /* Z60 */
6942 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL
), /* Z61 */
6944 /* Whitelist mute-only on all Lenovo by default */
6945 { .vendor
= PCI_VENDOR_ID_LENOVO
,
6946 .bios
= TPACPI_MATCH_ANY
,
6947 .ec
= TPACPI_MATCH_ANY
,
6948 .quirks
= TPACPI_VOL_Q_MUTEONLY
}
6951 static int __init
volume_init(struct ibm_init_struct
*iibm
)
6953 unsigned long quirks
;
6956 vdbg_printk(TPACPI_DBG_INIT
, "initializing volume subdriver\n");
6958 mutex_init(&volume_mutex
);
6961 * Check for module parameter bogosity, note that we
6962 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
6963 * able to detect "unspecified"
6965 if (volume_mode
> TPACPI_VOL_MODE_MAX
)
6968 if (volume_mode
== TPACPI_VOL_MODE_UCMS_STEP
) {
6970 "UCMS step volume mode not implemented, "
6971 "please contact %s\n", TPACPI_MAIL
);
6975 if (volume_capabilities
>= TPACPI_VOL_CAP_MAX
)
6979 * The ALSA mixer is our primary interface.
6980 * When disabled, don't install the subdriver at all
6983 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6984 "ALSA mixer disabled by parameter, "
6985 "not loading volume subdriver...\n");
6989 quirks
= tpacpi_check_quirks(volume_quirk_table
,
6990 ARRAY_SIZE(volume_quirk_table
));
6992 switch (volume_capabilities
) {
6993 case TPACPI_VOL_CAP_AUTO
:
6994 if (quirks
& TPACPI_VOL_Q_MUTEONLY
)
6995 tp_features
.mixer_no_level_control
= 1;
6996 else if (quirks
& TPACPI_VOL_Q_LEVEL
)
6997 tp_features
.mixer_no_level_control
= 0;
6999 return 1; /* no mixer */
7001 case TPACPI_VOL_CAP_VOLMUTE
:
7002 tp_features
.mixer_no_level_control
= 0;
7004 case TPACPI_VOL_CAP_MUTEONLY
:
7005 tp_features
.mixer_no_level_control
= 1;
7011 if (volume_capabilities
!= TPACPI_VOL_CAP_AUTO
)
7012 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
7013 "using user-supplied volume_capabilities=%d\n",
7014 volume_capabilities
);
7016 if (volume_mode
== TPACPI_VOL_MODE_AUTO
||
7017 volume_mode
== TPACPI_VOL_MODE_MAX
) {
7018 volume_mode
= TPACPI_VOL_MODE_ECNVRAM
;
7020 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
7021 "driver auto-selected volume_mode=%d\n",
7024 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
7025 "using user-supplied volume_mode=%d\n",
7029 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
7030 "mute is supported, volume control is %s\n",
7031 str_supported(!tp_features
.mixer_no_level_control
));
7033 rc
= volume_create_alsa_mixer();
7036 "Could not create the ALSA mixer interface\n");
7041 "Console audio control enabled, mode: %s\n",
7042 (volume_control_allowed
) ?
7043 "override (read/write)" :
7044 "monitor (read only)");
7046 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
7047 "registering volume hotkeys as change notification\n");
7048 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
7049 | TP_ACPI_HKEY_VOLUP_MASK
7050 | TP_ACPI_HKEY_VOLDWN_MASK
7051 | TP_ACPI_HKEY_MUTE_MASK
);
7056 static int volume_read(struct seq_file
*m
)
7060 if (volume_get_status(&status
) < 0) {
7061 seq_printf(m
, "level:\t\tunreadable\n");
7063 if (tp_features
.mixer_no_level_control
)
7064 seq_printf(m
, "level:\t\tunsupported\n");
7066 seq_printf(m
, "level:\t\t%d\n",
7067 status
& TP_EC_AUDIO_LVL_MSK
);
7069 seq_printf(m
, "mute:\t\t%s\n",
7070 onoff(status
, TP_EC_AUDIO_MUTESW
));
7072 if (volume_control_allowed
) {
7073 seq_printf(m
, "commands:\tunmute, mute\n");
7074 if (!tp_features
.mixer_no_level_control
) {
7076 "commands:\tup, down\n");
7078 "commands:\tlevel <level>"
7079 " (<level> is 0-%d)\n",
7088 static int volume_write(char *buf
)
7091 u8 new_level
, new_mute
;
7097 * We do allow volume control at driver startup, so that the
7098 * user can set initial state through the volume=... parameter hack.
7100 if (!volume_control_allowed
&& tpacpi_lifecycle
!= TPACPI_LIFE_INIT
) {
7101 if (unlikely(!tp_warned
.volume_ctrl_forbidden
)) {
7102 tp_warned
.volume_ctrl_forbidden
= 1;
7103 printk(TPACPI_NOTICE
7104 "Console audio control in monitor mode, "
7105 "changes are not allowed.\n");
7106 printk(TPACPI_NOTICE
7107 "Use the volume_control=1 module parameter "
7108 "to enable volume control\n");
7113 rc
= volume_get_status(&s
);
7117 new_level
= s
& TP_EC_AUDIO_LVL_MSK
;
7118 new_mute
= s
& TP_EC_AUDIO_MUTESW_MSK
;
7120 while ((cmd
= next_cmd(&buf
))) {
7121 if (!tp_features
.mixer_no_level_control
) {
7122 if (strlencmp(cmd
, "up") == 0) {
7125 else if (new_level
< TP_EC_VOLUME_MAX
)
7128 } else if (strlencmp(cmd
, "down") == 0) {
7131 else if (new_level
> 0)
7134 } else if (sscanf(cmd
, "level %u", &l
) == 1 &&
7135 l
>= 0 && l
<= TP_EC_VOLUME_MAX
) {
7140 if (strlencmp(cmd
, "mute") == 0)
7141 new_mute
= TP_EC_AUDIO_MUTESW_MSK
;
7142 else if (strlencmp(cmd
, "unmute") == 0)
7148 if (tp_features
.mixer_no_level_control
) {
7149 tpacpi_disclose_usertask("procfs volume", "%smute\n",
7150 new_mute
? "" : "un");
7151 rc
= volume_set_mute(!!new_mute
);
7153 tpacpi_disclose_usertask("procfs volume",
7154 "%smute and set level to %d\n",
7155 new_mute
? "" : "un", new_level
);
7156 rc
= volume_set_status(new_mute
| new_level
);
7158 volume_alsa_notify_change();
7160 return (rc
== -EINTR
) ? -ERESTARTSYS
: rc
;
7163 static struct ibm_struct volume_driver_data
= {
7165 .read
= volume_read
,
7166 .write
= volume_write
,
7167 .exit
= volume_exit
,
7168 .suspend
= volume_suspend
,
7169 .resume
= volume_resume
,
7170 .shutdown
= volume_shutdown
,
7173 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7175 #define alsa_card NULL
7177 static void inline volume_alsa_notify_change(void)
7181 static int __init
volume_init(struct ibm_init_struct
*iibm
)
7184 "volume: disabled as there is no ALSA support in this kernel\n");
7189 static struct ibm_struct volume_driver_data
= {
7193 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7195 /*************************************************************************
7202 * TPACPI_FAN_RD_ACPI_GFAN:
7203 * ACPI GFAN method: returns fan level
7205 * see TPACPI_FAN_WR_ACPI_SFAN
7206 * EC 0x2f (HFSP) not available if GFAN exists
7208 * TPACPI_FAN_WR_ACPI_SFAN:
7209 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
7211 * EC 0x2f (HFSP) might be available *for reading*, but do not use
7214 * TPACPI_FAN_WR_TPEC:
7215 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
7216 * Supported on almost all ThinkPads
7218 * Fan speed changes of any sort (including those caused by the
7219 * disengaged mode) are usually done slowly by the firmware as the
7220 * maximum amount of fan duty cycle change per second seems to be
7223 * Reading is not available if GFAN exists.
7224 * Writing is not available if SFAN exists.
7227 * 7 automatic mode engaged;
7228 * (default operation mode of the ThinkPad)
7229 * fan level is ignored in this mode.
7230 * 6 full speed mode (takes precedence over bit 7);
7231 * not available on all thinkpads. May disable
7232 * the tachometer while the fan controller ramps up
7233 * the speed (which can take up to a few *minutes*).
7234 * Speeds up fan to 100% duty-cycle, which is far above
7235 * the standard RPM levels. It is not impossible that
7236 * it could cause hardware damage.
7237 * 5-3 unused in some models. Extra bits for fan level
7238 * in others, but still useless as all values above
7239 * 7 map to the same speed as level 7 in these models.
7240 * 2-0 fan level (0..7 usually)
7242 * 0x07 = max (set when temperatures critical)
7243 * Some ThinkPads may have other levels, see
7244 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
7246 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
7247 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
7248 * does so, its initial value is meaningless (0x07).
7250 * For firmware bugs, refer to:
7251 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7255 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
7256 * Main fan tachometer reading (in RPM)
7258 * This register is present on all ThinkPads with a new-style EC, and
7259 * it is known not to be present on the A21m/e, and T22, as there is
7260 * something else in offset 0x84 according to the ACPI DSDT. Other
7261 * ThinkPads from this same time period (and earlier) probably lack the
7262 * tachometer as well.
7264 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
7265 * was never fixed by IBM to report the EC firmware version string
7266 * probably support the tachometer (like the early X models), so
7267 * detecting it is quite hard. We need more data to know for sure.
7269 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
7272 * FIRMWARE BUG: may go stale while the EC is switching to full speed
7275 * For firmware bugs, refer to:
7276 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7280 * ThinkPad EC register 0x31 bit 0 (only on select models)
7282 * When bit 0 of EC register 0x31 is zero, the tachometer registers
7283 * show the speed of the main fan. When bit 0 of EC register 0x31
7284 * is one, the tachometer registers show the speed of the auxiliary
7287 * Fan control seems to affect both fans, regardless of the state
7290 * So far, only the firmware for the X60/X61 non-tablet versions
7291 * seem to support this (firmware TP-7M).
7293 * TPACPI_FAN_WR_ACPI_FANS:
7294 * ThinkPad X31, X40, X41. Not available in the X60.
7296 * FANS ACPI handle: takes three arguments: low speed, medium speed,
7297 * high speed. ACPI DSDT seems to map these three speeds to levels
7298 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
7299 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
7301 * The speeds are stored on handles
7302 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
7304 * There are three default speed sets, accessible as handles:
7305 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
7307 * ACPI DSDT switches which set is in use depending on various
7310 * TPACPI_FAN_WR_TPEC is also available and should be used to
7311 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
7312 * but the ACPI tables just mention level 7.
7315 enum { /* Fan control constants */
7316 fan_status_offset
= 0x2f, /* EC register 0x2f */
7317 fan_rpm_offset
= 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
7318 * 0x84 must be read before 0x85 */
7319 fan_select_offset
= 0x31, /* EC register 0x31 (Firmware 7M)
7320 bit 0 selects which fan is active */
7322 TP_EC_FAN_FULLSPEED
= 0x40, /* EC fan mode: full speed */
7323 TP_EC_FAN_AUTO
= 0x80, /* EC fan mode: auto fan control */
7325 TPACPI_FAN_LAST_LEVEL
= 0x100, /* Use cached last-seen fan level */
7328 enum fan_status_access_mode
{
7329 TPACPI_FAN_NONE
= 0, /* No fan status or control */
7330 TPACPI_FAN_RD_ACPI_GFAN
, /* Use ACPI GFAN */
7331 TPACPI_FAN_RD_TPEC
, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
7334 enum fan_control_access_mode
{
7335 TPACPI_FAN_WR_NONE
= 0, /* No fan control */
7336 TPACPI_FAN_WR_ACPI_SFAN
, /* Use ACPI SFAN */
7337 TPACPI_FAN_WR_TPEC
, /* Use ACPI EC reg 0x2f */
7338 TPACPI_FAN_WR_ACPI_FANS
, /* Use ACPI FANS and EC reg 0x2f */
7341 enum fan_control_commands
{
7342 TPACPI_FAN_CMD_SPEED
= 0x0001, /* speed command */
7343 TPACPI_FAN_CMD_LEVEL
= 0x0002, /* level command */
7344 TPACPI_FAN_CMD_ENABLE
= 0x0004, /* enable/disable cmd,
7345 * and also watchdog cmd */
7348 static int fan_control_allowed
;
7350 static enum fan_status_access_mode fan_status_access_mode
;
7351 static enum fan_control_access_mode fan_control_access_mode
;
7352 static enum fan_control_commands fan_control_commands
;
7354 static u8 fan_control_initial_status
;
7355 static u8 fan_control_desired_level
;
7356 static u8 fan_control_resume_level
;
7357 static int fan_watchdog_maxinterval
;
7359 static struct mutex fan_mutex
;
7361 static void fan_watchdog_fire(struct work_struct
*ignored
);
7362 static DECLARE_DELAYED_WORK(fan_watchdog_task
, fan_watchdog_fire
);
7364 TPACPI_HANDLE(fans
, ec
, "FANS"); /* X31, X40, X41 */
7365 TPACPI_HANDLE(gfan
, ec
, "GFAN", /* 570 */
7366 "\\FSPD", /* 600e/x, 770e, 770x */
7368 TPACPI_HANDLE(sfan
, ec
, "SFAN", /* 570 */
7369 "JFNS", /* 770x-JL */
7373 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
7374 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
7375 * be in auto mode (0x80).
7377 * This is corrected by any write to HFSP either by the driver, or
7380 * We assume 0x07 really means auto mode while this quirk is active,
7381 * as this is far more likely than the ThinkPad being in level 7,
7382 * which is only used by the firmware during thermal emergencies.
7384 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
7385 * TP-70 (T43, R52), which are known to be buggy.
7388 static void fan_quirk1_setup(void)
7390 if (fan_control_initial_status
== 0x07) {
7391 printk(TPACPI_NOTICE
7392 "fan_init: initial fan status is unknown, "
7393 "assuming it is in auto mode\n");
7394 tp_features
.fan_ctrl_status_undef
= 1;
7398 static void fan_quirk1_handle(u8
*fan_status
)
7400 if (unlikely(tp_features
.fan_ctrl_status_undef
)) {
7401 if (*fan_status
!= fan_control_initial_status
) {
7402 /* something changed the HFSP regisnter since
7403 * driver init time, so it is not undefined
7405 tp_features
.fan_ctrl_status_undef
= 0;
7407 /* Return most likely status. In fact, it
7408 * might be the only possible status */
7409 *fan_status
= TP_EC_FAN_AUTO
;
7414 /* Select main fan on X60/X61, NOOP on others */
7415 static bool fan_select_fan1(void)
7417 if (tp_features
.second_fan
) {
7420 if (ec_read(fan_select_offset
, &val
) < 0)
7423 if (ec_write(fan_select_offset
, val
) < 0)
7429 /* Select secondary fan on X60/X61 */
7430 static bool fan_select_fan2(void)
7434 if (!tp_features
.second_fan
)
7437 if (ec_read(fan_select_offset
, &val
) < 0)
7440 if (ec_write(fan_select_offset
, val
) < 0)
7447 * Call with fan_mutex held
7449 static void fan_update_desired_level(u8 status
)
7452 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
7454 fan_control_desired_level
= 7;
7456 fan_control_desired_level
= status
;
7460 static int fan_get_status(u8
*status
)
7465 * Add TPACPI_FAN_RD_ACPI_FANS ? */
7467 switch (fan_status_access_mode
) {
7468 case TPACPI_FAN_RD_ACPI_GFAN
:
7469 /* 570, 600e/x, 770e, 770x */
7471 if (unlikely(!acpi_evalf(gfan_handle
, &s
, NULL
, "d")))
7479 case TPACPI_FAN_RD_TPEC
:
7480 /* all except 570, 600e/x, 770e, 770x */
7481 if (unlikely(!acpi_ec_read(fan_status_offset
, &s
)))
7484 if (likely(status
)) {
7486 fan_quirk1_handle(status
);
7498 static int fan_get_status_safe(u8
*status
)
7503 if (mutex_lock_killable(&fan_mutex
))
7504 return -ERESTARTSYS
;
7505 rc
= fan_get_status(&s
);
7507 fan_update_desired_level(s
);
7508 mutex_unlock(&fan_mutex
);
7516 static int fan_get_speed(unsigned int *speed
)
7520 switch (fan_status_access_mode
) {
7521 case TPACPI_FAN_RD_TPEC
:
7522 /* all except 570, 600e/x, 770e, 770x */
7523 if (unlikely(!fan_select_fan1()))
7525 if (unlikely(!acpi_ec_read(fan_rpm_offset
, &lo
) ||
7526 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
)))
7530 *speed
= (hi
<< 8) | lo
;
7541 static int fan2_get_speed(unsigned int *speed
)
7546 switch (fan_status_access_mode
) {
7547 case TPACPI_FAN_RD_TPEC
:
7548 /* all except 570, 600e/x, 770e, 770x */
7549 if (unlikely(!fan_select_fan2()))
7551 rc
= !acpi_ec_read(fan_rpm_offset
, &lo
) ||
7552 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
);
7553 fan_select_fan1(); /* play it safe */
7558 *speed
= (hi
<< 8) | lo
;
7569 static int fan_set_level(int level
)
7571 if (!fan_control_allowed
)
7574 switch (fan_control_access_mode
) {
7575 case TPACPI_FAN_WR_ACPI_SFAN
:
7576 if (level
>= 0 && level
<= 7) {
7577 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", level
))
7583 case TPACPI_FAN_WR_ACPI_FANS
:
7584 case TPACPI_FAN_WR_TPEC
:
7585 if (!(level
& TP_EC_FAN_AUTO
) &&
7586 !(level
& TP_EC_FAN_FULLSPEED
) &&
7587 ((level
< 0) || (level
> 7)))
7590 /* safety net should the EC not support AUTO
7591 * or FULLSPEED mode bits and just ignore them */
7592 if (level
& TP_EC_FAN_FULLSPEED
)
7593 level
|= 7; /* safety min speed 7 */
7594 else if (level
& TP_EC_FAN_AUTO
)
7595 level
|= 4; /* safety min speed 4 */
7597 if (!acpi_ec_write(fan_status_offset
, level
))
7600 tp_features
.fan_ctrl_status_undef
= 0;
7607 vdbg_printk(TPACPI_DBG_FAN
,
7608 "fan control: set fan control register to 0x%02x\n", level
);
7612 static int fan_set_level_safe(int level
)
7616 if (!fan_control_allowed
)
7619 if (mutex_lock_killable(&fan_mutex
))
7620 return -ERESTARTSYS
;
7622 if (level
== TPACPI_FAN_LAST_LEVEL
)
7623 level
= fan_control_desired_level
;
7625 rc
= fan_set_level(level
);
7627 fan_update_desired_level(level
);
7629 mutex_unlock(&fan_mutex
);
7633 static int fan_set_enable(void)
7638 if (!fan_control_allowed
)
7641 if (mutex_lock_killable(&fan_mutex
))
7642 return -ERESTARTSYS
;
7644 switch (fan_control_access_mode
) {
7645 case TPACPI_FAN_WR_ACPI_FANS
:
7646 case TPACPI_FAN_WR_TPEC
:
7647 rc
= fan_get_status(&s
);
7651 /* Don't go out of emergency fan mode */
7654 s
|= TP_EC_FAN_AUTO
| 4; /* min fan speed 4 */
7657 if (!acpi_ec_write(fan_status_offset
, s
))
7660 tp_features
.fan_ctrl_status_undef
= 0;
7665 case TPACPI_FAN_WR_ACPI_SFAN
:
7666 rc
= fan_get_status(&s
);
7672 /* Set fan to at least level 4 */
7675 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", s
))
7685 mutex_unlock(&fan_mutex
);
7688 vdbg_printk(TPACPI_DBG_FAN
,
7689 "fan control: set fan control register to 0x%02x\n",
7694 static int fan_set_disable(void)
7698 if (!fan_control_allowed
)
7701 if (mutex_lock_killable(&fan_mutex
))
7702 return -ERESTARTSYS
;
7705 switch (fan_control_access_mode
) {
7706 case TPACPI_FAN_WR_ACPI_FANS
:
7707 case TPACPI_FAN_WR_TPEC
:
7708 if (!acpi_ec_write(fan_status_offset
, 0x00))
7711 fan_control_desired_level
= 0;
7712 tp_features
.fan_ctrl_status_undef
= 0;
7716 case TPACPI_FAN_WR_ACPI_SFAN
:
7717 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", 0x00))
7720 fan_control_desired_level
= 0;
7728 vdbg_printk(TPACPI_DBG_FAN
,
7729 "fan control: set fan control register to 0\n");
7731 mutex_unlock(&fan_mutex
);
7735 static int fan_set_speed(int speed
)
7739 if (!fan_control_allowed
)
7742 if (mutex_lock_killable(&fan_mutex
))
7743 return -ERESTARTSYS
;
7746 switch (fan_control_access_mode
) {
7747 case TPACPI_FAN_WR_ACPI_FANS
:
7748 if (speed
>= 0 && speed
<= 65535) {
7749 if (!acpi_evalf(fans_handle
, NULL
, NULL
, "vddd",
7750 speed
, speed
, speed
))
7760 mutex_unlock(&fan_mutex
);
7764 static void fan_watchdog_reset(void)
7766 static int fan_watchdog_active
;
7768 if (fan_control_access_mode
== TPACPI_FAN_WR_NONE
)
7771 if (fan_watchdog_active
)
7772 cancel_delayed_work(&fan_watchdog_task
);
7774 if (fan_watchdog_maxinterval
> 0 &&
7775 tpacpi_lifecycle
!= TPACPI_LIFE_EXITING
) {
7776 fan_watchdog_active
= 1;
7777 if (!queue_delayed_work(tpacpi_wq
, &fan_watchdog_task
,
7778 msecs_to_jiffies(fan_watchdog_maxinterval
7781 "failed to queue the fan watchdog, "
7782 "watchdog will not trigger\n");
7785 fan_watchdog_active
= 0;
7788 static void fan_watchdog_fire(struct work_struct
*ignored
)
7792 if (tpacpi_lifecycle
!= TPACPI_LIFE_RUNNING
)
7795 printk(TPACPI_NOTICE
"fan watchdog: enabling fan\n");
7796 rc
= fan_set_enable();
7798 printk(TPACPI_ERR
"fan watchdog: error %d while enabling fan, "
7799 "will try again later...\n", -rc
);
7800 /* reschedule for later */
7801 fan_watchdog_reset();
7806 * SYSFS fan layout: hwmon compatible (device)
7809 * 0: "disengaged" mode
7811 * 2: native EC "auto" mode (recommended, hardware default)
7813 * pwm*: set speed in manual mode, ignored otherwise.
7814 * 0 is level 0; 255 is level 7. Intermediate points done with linear
7817 * fan*_input: tachometer reading, RPM
7820 * SYSFS fan layout: extensions
7822 * fan_watchdog (driver):
7823 * fan watchdog interval in seconds, 0 disables (default), max 120
7826 /* sysfs fan pwm1_enable ----------------------------------------------- */
7827 static ssize_t
fan_pwm1_enable_show(struct device
*dev
,
7828 struct device_attribute
*attr
,
7834 res
= fan_get_status_safe(&status
);
7838 if (status
& TP_EC_FAN_FULLSPEED
) {
7840 } else if (status
& TP_EC_FAN_AUTO
) {
7845 return snprintf(buf
, PAGE_SIZE
, "%d\n", mode
);
7848 static ssize_t
fan_pwm1_enable_store(struct device
*dev
,
7849 struct device_attribute
*attr
,
7850 const char *buf
, size_t count
)
7855 if (parse_strtoul(buf
, 2, &t
))
7858 tpacpi_disclose_usertask("hwmon pwm1_enable",
7859 "set fan mode to %lu\n", t
);
7863 level
= TP_EC_FAN_FULLSPEED
;
7866 level
= TPACPI_FAN_LAST_LEVEL
;
7869 level
= TP_EC_FAN_AUTO
;
7872 /* reserved for software-controlled auto mode */
7878 res
= fan_set_level_safe(level
);
7884 fan_watchdog_reset();
7889 static struct device_attribute dev_attr_fan_pwm1_enable
=
7890 __ATTR(pwm1_enable
, S_IWUSR
| S_IRUGO
,
7891 fan_pwm1_enable_show
, fan_pwm1_enable_store
);
7893 /* sysfs fan pwm1 ------------------------------------------------------ */
7894 static ssize_t
fan_pwm1_show(struct device
*dev
,
7895 struct device_attribute
*attr
,
7901 res
= fan_get_status_safe(&status
);
7906 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) != 0)
7907 status
= fan_control_desired_level
;
7912 return snprintf(buf
, PAGE_SIZE
, "%u\n", (status
* 255) / 7);
7915 static ssize_t
fan_pwm1_store(struct device
*dev
,
7916 struct device_attribute
*attr
,
7917 const char *buf
, size_t count
)
7921 u8 status
, newlevel
;
7923 if (parse_strtoul(buf
, 255, &s
))
7926 tpacpi_disclose_usertask("hwmon pwm1",
7927 "set fan speed to %lu\n", s
);
7929 /* scale down from 0-255 to 0-7 */
7930 newlevel
= (s
>> 5) & 0x07;
7932 if (mutex_lock_killable(&fan_mutex
))
7933 return -ERESTARTSYS
;
7935 rc
= fan_get_status(&status
);
7936 if (!rc
&& (status
&
7937 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
7938 rc
= fan_set_level(newlevel
);
7942 fan_update_desired_level(newlevel
);
7943 fan_watchdog_reset();
7947 mutex_unlock(&fan_mutex
);
7948 return (rc
)? rc
: count
;
7951 static struct device_attribute dev_attr_fan_pwm1
=
7952 __ATTR(pwm1
, S_IWUSR
| S_IRUGO
,
7953 fan_pwm1_show
, fan_pwm1_store
);
7955 /* sysfs fan fan1_input ------------------------------------------------ */
7956 static ssize_t
fan_fan1_input_show(struct device
*dev
,
7957 struct device_attribute
*attr
,
7963 res
= fan_get_speed(&speed
);
7967 return snprintf(buf
, PAGE_SIZE
, "%u\n", speed
);
7970 static struct device_attribute dev_attr_fan_fan1_input
=
7971 __ATTR(fan1_input
, S_IRUGO
,
7972 fan_fan1_input_show
, NULL
);
7974 /* sysfs fan fan2_input ------------------------------------------------ */
7975 static ssize_t
fan_fan2_input_show(struct device
*dev
,
7976 struct device_attribute
*attr
,
7982 res
= fan2_get_speed(&speed
);
7986 return snprintf(buf
, PAGE_SIZE
, "%u\n", speed
);
7989 static struct device_attribute dev_attr_fan_fan2_input
=
7990 __ATTR(fan2_input
, S_IRUGO
,
7991 fan_fan2_input_show
, NULL
);
7993 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
7994 static ssize_t
fan_fan_watchdog_show(struct device_driver
*drv
,
7997 return snprintf(buf
, PAGE_SIZE
, "%u\n", fan_watchdog_maxinterval
);
8000 static ssize_t
fan_fan_watchdog_store(struct device_driver
*drv
,
8001 const char *buf
, size_t count
)
8005 if (parse_strtoul(buf
, 120, &t
))
8008 if (!fan_control_allowed
)
8011 fan_watchdog_maxinterval
= t
;
8012 fan_watchdog_reset();
8014 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t
);
8019 static DRIVER_ATTR(fan_watchdog
, S_IWUSR
| S_IRUGO
,
8020 fan_fan_watchdog_show
, fan_fan_watchdog_store
);
8022 /* --------------------------------------------------------------------- */
8023 static struct attribute
*fan_attributes
[] = {
8024 &dev_attr_fan_pwm1_enable
.attr
, &dev_attr_fan_pwm1
.attr
,
8025 &dev_attr_fan_fan1_input
.attr
,
8026 NULL
, /* for fan2_input */
8030 static const struct attribute_group fan_attr_group
= {
8031 .attrs
= fan_attributes
,
8034 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
8035 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
8037 #define TPACPI_FAN_QI(__id1, __id2, __quirks) \
8038 { .vendor = PCI_VENDOR_ID_IBM, \
8039 .bios = TPACPI_MATCH_ANY, \
8040 .ec = TPID(__id1, __id2), \
8041 .quirks = __quirks }
8043 #define TPACPI_FAN_QL(__id1, __id2, __quirks) \
8044 { .vendor = PCI_VENDOR_ID_LENOVO, \
8045 .bios = TPACPI_MATCH_ANY, \
8046 .ec = TPID(__id1, __id2), \
8047 .quirks = __quirks }
8049 static const struct tpacpi_quirk fan_quirk_table
[] __initconst
= {
8050 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1
),
8051 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1
),
8052 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1
),
8053 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1
),
8054 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN
),
8057 #undef TPACPI_FAN_QL
8058 #undef TPACPI_FAN_QI
8060 static int __init
fan_init(struct ibm_init_struct
*iibm
)
8063 unsigned long quirks
;
8065 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
8066 "initializing fan subdriver\n");
8068 mutex_init(&fan_mutex
);
8069 fan_status_access_mode
= TPACPI_FAN_NONE
;
8070 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
8071 fan_control_commands
= 0;
8072 fan_watchdog_maxinterval
= 0;
8073 tp_features
.fan_ctrl_status_undef
= 0;
8074 tp_features
.second_fan
= 0;
8075 fan_control_desired_level
= 7;
8077 if (tpacpi_is_ibm()) {
8078 TPACPI_ACPIHANDLE_INIT(fans
);
8079 TPACPI_ACPIHANDLE_INIT(gfan
);
8080 TPACPI_ACPIHANDLE_INIT(sfan
);
8083 quirks
= tpacpi_check_quirks(fan_quirk_table
,
8084 ARRAY_SIZE(fan_quirk_table
));
8087 /* 570, 600e/x, 770e, 770x */
8088 fan_status_access_mode
= TPACPI_FAN_RD_ACPI_GFAN
;
8090 /* all other ThinkPads: note that even old-style
8091 * ThinkPad ECs supports the fan control register */
8092 if (likely(acpi_ec_read(fan_status_offset
,
8093 &fan_control_initial_status
))) {
8094 fan_status_access_mode
= TPACPI_FAN_RD_TPEC
;
8095 if (quirks
& TPACPI_FAN_Q1
)
8097 if (quirks
& TPACPI_FAN_2FAN
) {
8098 tp_features
.second_fan
= 1;
8099 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
8100 "secondary fan support enabled\n");
8104 "ThinkPad ACPI EC access misbehaving, "
8105 "fan status and control unavailable\n");
8112 fan_control_access_mode
= TPACPI_FAN_WR_ACPI_SFAN
;
8113 fan_control_commands
|=
8114 TPACPI_FAN_CMD_LEVEL
| TPACPI_FAN_CMD_ENABLE
;
8117 /* gfan without sfan means no fan control */
8118 /* all other models implement TP EC 0x2f control */
8122 fan_control_access_mode
=
8123 TPACPI_FAN_WR_ACPI_FANS
;
8124 fan_control_commands
|=
8125 TPACPI_FAN_CMD_SPEED
|
8126 TPACPI_FAN_CMD_LEVEL
|
8127 TPACPI_FAN_CMD_ENABLE
;
8129 fan_control_access_mode
= TPACPI_FAN_WR_TPEC
;
8130 fan_control_commands
|=
8131 TPACPI_FAN_CMD_LEVEL
|
8132 TPACPI_FAN_CMD_ENABLE
;
8137 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
8138 "fan is %s, modes %d, %d\n",
8139 str_supported(fan_status_access_mode
!= TPACPI_FAN_NONE
||
8140 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
),
8141 fan_status_access_mode
, fan_control_access_mode
);
8143 /* fan control master switch */
8144 if (!fan_control_allowed
) {
8145 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
8146 fan_control_commands
= 0;
8147 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
8148 "fan control features disabled by parameter\n");
8151 /* update fan_control_desired_level */
8152 if (fan_status_access_mode
!= TPACPI_FAN_NONE
)
8153 fan_get_status_safe(NULL
);
8155 if (fan_status_access_mode
!= TPACPI_FAN_NONE
||
8156 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
) {
8157 if (tp_features
.second_fan
) {
8158 /* attach second fan tachometer */
8159 fan_attributes
[ARRAY_SIZE(fan_attributes
)-2] =
8160 &dev_attr_fan_fan2_input
.attr
;
8162 rc
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
8167 rc
= driver_create_file(&tpacpi_hwmon_pdriver
.driver
,
8168 &driver_attr_fan_watchdog
);
8170 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
8179 static void fan_exit(void)
8181 vdbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_FAN
,
8182 "cancelling any pending fan watchdog tasks\n");
8184 /* FIXME: can we really do this unconditionally? */
8185 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
, &fan_attr_group
);
8186 driver_remove_file(&tpacpi_hwmon_pdriver
.driver
,
8187 &driver_attr_fan_watchdog
);
8189 cancel_delayed_work(&fan_watchdog_task
);
8190 flush_workqueue(tpacpi_wq
);
8193 static void fan_suspend(pm_message_t state
)
8197 if (!fan_control_allowed
)
8200 /* Store fan status in cache */
8201 fan_control_resume_level
= 0;
8202 rc
= fan_get_status_safe(&fan_control_resume_level
);
8204 printk(TPACPI_NOTICE
8205 "failed to read fan level for later "
8206 "restore during resume: %d\n", rc
);
8208 /* if it is undefined, don't attempt to restore it.
8210 if (tp_features
.fan_ctrl_status_undef
)
8211 fan_control_resume_level
= 0;
8214 static void fan_resume(void)
8216 u8 current_level
= 7;
8217 bool do_set
= false;
8220 /* DSDT *always* updates status on resume */
8221 tp_features
.fan_ctrl_status_undef
= 0;
8223 if (!fan_control_allowed
||
8224 !fan_control_resume_level
||
8225 (fan_get_status_safe(¤t_level
) < 0))
8228 switch (fan_control_access_mode
) {
8229 case TPACPI_FAN_WR_ACPI_SFAN
:
8230 /* never decrease fan level */
8231 do_set
= (fan_control_resume_level
> current_level
);
8233 case TPACPI_FAN_WR_ACPI_FANS
:
8234 case TPACPI_FAN_WR_TPEC
:
8235 /* never decrease fan level, scale is:
8236 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
8238 * We expect the firmware to set either 7 or AUTO, but we
8239 * handle FULLSPEED out of paranoia.
8241 * So, we can safely only restore FULLSPEED or 7, anything
8242 * else could slow the fan. Restoring AUTO is useless, at
8243 * best that's exactly what the DSDT already set (it is the
8246 * Always keep in mind that the DSDT *will* have set the
8247 * fans to what the vendor supposes is the best level. We
8248 * muck with it only to speed the fan up.
8250 if (fan_control_resume_level
!= 7 &&
8251 !(fan_control_resume_level
& TP_EC_FAN_FULLSPEED
))
8254 do_set
= !(current_level
& TP_EC_FAN_FULLSPEED
) &&
8255 (current_level
!= fan_control_resume_level
);
8261 printk(TPACPI_NOTICE
8262 "restoring fan level to 0x%02x\n",
8263 fan_control_resume_level
);
8264 rc
= fan_set_level_safe(fan_control_resume_level
);
8266 printk(TPACPI_NOTICE
8267 "failed to restore fan level: %d\n", rc
);
8271 static int fan_read(struct seq_file
*m
)
8275 unsigned int speed
= 0;
8277 switch (fan_status_access_mode
) {
8278 case TPACPI_FAN_RD_ACPI_GFAN
:
8279 /* 570, 600e/x, 770e, 770x */
8280 rc
= fan_get_status_safe(&status
);
8284 seq_printf(m
, "status:\t\t%s\n"
8286 (status
!= 0) ? "enabled" : "disabled", status
);
8289 case TPACPI_FAN_RD_TPEC
:
8290 /* all except 570, 600e/x, 770e, 770x */
8291 rc
= fan_get_status_safe(&status
);
8295 seq_printf(m
, "status:\t\t%s\n",
8296 (status
!= 0) ? "enabled" : "disabled");
8298 rc
= fan_get_speed(&speed
);
8302 seq_printf(m
, "speed:\t\t%d\n", speed
);
8304 if (status
& TP_EC_FAN_FULLSPEED
)
8305 /* Disengaged mode takes precedence */
8306 seq_printf(m
, "level:\t\tdisengaged\n");
8307 else if (status
& TP_EC_FAN_AUTO
)
8308 seq_printf(m
, "level:\t\tauto\n");
8310 seq_printf(m
, "level:\t\t%d\n", status
);
8313 case TPACPI_FAN_NONE
:
8315 seq_printf(m
, "status:\t\tnot supported\n");
8318 if (fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) {
8319 seq_printf(m
, "commands:\tlevel <level>");
8321 switch (fan_control_access_mode
) {
8322 case TPACPI_FAN_WR_ACPI_SFAN
:
8323 seq_printf(m
, " (<level> is 0-7)\n");
8327 seq_printf(m
, " (<level> is 0-7, "
8328 "auto, disengaged, full-speed)\n");
8333 if (fan_control_commands
& TPACPI_FAN_CMD_ENABLE
)
8334 seq_printf(m
, "commands:\tenable, disable\n"
8335 "commands:\twatchdog <timeout> (<timeout> "
8336 "is 0 (off), 1-120 (seconds))\n");
8338 if (fan_control_commands
& TPACPI_FAN_CMD_SPEED
)
8339 seq_printf(m
, "commands:\tspeed <speed>"
8340 " (<speed> is 0-65535)\n");
8345 static int fan_write_cmd_level(const char *cmd
, int *rc
)
8349 if (strlencmp(cmd
, "level auto") == 0)
8350 level
= TP_EC_FAN_AUTO
;
8351 else if ((strlencmp(cmd
, "level disengaged") == 0) |
8352 (strlencmp(cmd
, "level full-speed") == 0))
8353 level
= TP_EC_FAN_FULLSPEED
;
8354 else if (sscanf(cmd
, "level %d", &level
) != 1)
8357 *rc
= fan_set_level_safe(level
);
8359 printk(TPACPI_ERR
"level command accepted for unsupported "
8360 "access mode %d", fan_control_access_mode
);
8362 tpacpi_disclose_usertask("procfs fan",
8363 "set level to %d\n", level
);
8368 static int fan_write_cmd_enable(const char *cmd
, int *rc
)
8370 if (strlencmp(cmd
, "enable") != 0)
8373 *rc
= fan_set_enable();
8375 printk(TPACPI_ERR
"enable command accepted for unsupported "
8376 "access mode %d", fan_control_access_mode
);
8378 tpacpi_disclose_usertask("procfs fan", "enable\n");
8383 static int fan_write_cmd_disable(const char *cmd
, int *rc
)
8385 if (strlencmp(cmd
, "disable") != 0)
8388 *rc
= fan_set_disable();
8390 printk(TPACPI_ERR
"disable command accepted for unsupported "
8391 "access mode %d", fan_control_access_mode
);
8393 tpacpi_disclose_usertask("procfs fan", "disable\n");
8398 static int fan_write_cmd_speed(const char *cmd
, int *rc
)
8403 * Support speed <low> <medium> <high> ? */
8405 if (sscanf(cmd
, "speed %d", &speed
) != 1)
8408 *rc
= fan_set_speed(speed
);
8410 printk(TPACPI_ERR
"speed command accepted for unsupported "
8411 "access mode %d", fan_control_access_mode
);
8413 tpacpi_disclose_usertask("procfs fan",
8414 "set speed to %d\n", speed
);
8419 static int fan_write_cmd_watchdog(const char *cmd
, int *rc
)
8423 if (sscanf(cmd
, "watchdog %d", &interval
) != 1)
8426 if (interval
< 0 || interval
> 120)
8429 fan_watchdog_maxinterval
= interval
;
8430 tpacpi_disclose_usertask("procfs fan",
8431 "set watchdog timer to %d\n",
8438 static int fan_write(char *buf
)
8443 while (!rc
&& (cmd
= next_cmd(&buf
))) {
8444 if (!((fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) &&
8445 fan_write_cmd_level(cmd
, &rc
)) &&
8446 !((fan_control_commands
& TPACPI_FAN_CMD_ENABLE
) &&
8447 (fan_write_cmd_enable(cmd
, &rc
) ||
8448 fan_write_cmd_disable(cmd
, &rc
) ||
8449 fan_write_cmd_watchdog(cmd
, &rc
))) &&
8450 !((fan_control_commands
& TPACPI_FAN_CMD_SPEED
) &&
8451 fan_write_cmd_speed(cmd
, &rc
))
8455 fan_watchdog_reset();
8461 static struct ibm_struct fan_driver_data
= {
8466 .suspend
= fan_suspend
,
8467 .resume
= fan_resume
,
8470 /****************************************************************************
8471 ****************************************************************************
8475 ****************************************************************************
8476 ****************************************************************************/
8479 * HKEY event callout for other subdrivers go here
8480 * (yes, it is ugly, but it is quick, safe, and gets the job done
8482 static void tpacpi_driver_event(const unsigned int hkey_event
)
8484 if (ibm_backlight_device
) {
8485 switch (hkey_event
) {
8486 case TP_HKEY_EV_BRGHT_UP
:
8487 case TP_HKEY_EV_BRGHT_DOWN
:
8488 tpacpi_brightness_notify_change();
8492 switch (hkey_event
) {
8493 case TP_HKEY_EV_VOL_UP
:
8494 case TP_HKEY_EV_VOL_DOWN
:
8495 case TP_HKEY_EV_VOL_MUTE
:
8496 volume_alsa_notify_change();
8501 static void hotkey_driver_event(const unsigned int scancode
)
8503 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE
+ scancode
);
8506 /* sysfs name ---------------------------------------------------------- */
8507 static ssize_t
thinkpad_acpi_pdev_name_show(struct device
*dev
,
8508 struct device_attribute
*attr
,
8511 return snprintf(buf
, PAGE_SIZE
, "%s\n", TPACPI_NAME
);
8514 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name
=
8515 __ATTR(name
, S_IRUGO
, thinkpad_acpi_pdev_name_show
, NULL
);
8517 /* --------------------------------------------------------------------- */
8520 static struct proc_dir_entry
*proc_dir
;
8523 * Module and infrastructure proble, init and exit handling
8526 static int force_load
;
8528 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
8529 static const char * __init
str_supported(int is_supported
)
8531 static char text_unsupported
[] __initdata
= "not supported";
8533 return (is_supported
)? &text_unsupported
[4] : &text_unsupported
[0];
8535 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
8537 static void ibm_exit(struct ibm_struct
*ibm
)
8539 dbg_printk(TPACPI_DBG_EXIT
, "removing %s\n", ibm
->name
);
8541 list_del_init(&ibm
->all_drivers
);
8543 if (ibm
->flags
.acpi_notify_installed
) {
8544 dbg_printk(TPACPI_DBG_EXIT
,
8545 "%s: acpi_remove_notify_handler\n", ibm
->name
);
8547 acpi_remove_notify_handler(*ibm
->acpi
->handle
,
8549 dispatch_acpi_notify
);
8550 ibm
->flags
.acpi_notify_installed
= 0;
8551 ibm
->flags
.acpi_notify_installed
= 0;
8554 if (ibm
->flags
.proc_created
) {
8555 dbg_printk(TPACPI_DBG_EXIT
,
8556 "%s: remove_proc_entry\n", ibm
->name
);
8557 remove_proc_entry(ibm
->name
, proc_dir
);
8558 ibm
->flags
.proc_created
= 0;
8561 if (ibm
->flags
.acpi_driver_registered
) {
8562 dbg_printk(TPACPI_DBG_EXIT
,
8563 "%s: acpi_bus_unregister_driver\n", ibm
->name
);
8565 acpi_bus_unregister_driver(ibm
->acpi
->driver
);
8566 kfree(ibm
->acpi
->driver
);
8567 ibm
->acpi
->driver
= NULL
;
8568 ibm
->flags
.acpi_driver_registered
= 0;
8571 if (ibm
->flags
.init_called
&& ibm
->exit
) {
8573 ibm
->flags
.init_called
= 0;
8576 dbg_printk(TPACPI_DBG_INIT
, "finished removing %s\n", ibm
->name
);
8579 static int __init
ibm_init(struct ibm_init_struct
*iibm
)
8582 struct ibm_struct
*ibm
= iibm
->data
;
8583 struct proc_dir_entry
*entry
;
8585 BUG_ON(ibm
== NULL
);
8587 INIT_LIST_HEAD(&ibm
->all_drivers
);
8589 if (ibm
->flags
.experimental
&& !experimental
)
8592 dbg_printk(TPACPI_DBG_INIT
,
8593 "probing for %s\n", ibm
->name
);
8596 ret
= iibm
->init(iibm
);
8598 return 0; /* probe failed */
8602 ibm
->flags
.init_called
= 1;
8606 if (ibm
->acpi
->hid
) {
8607 ret
= register_tpacpi_subdriver(ibm
);
8612 if (ibm
->acpi
->notify
) {
8613 ret
= setup_acpi_notify(ibm
);
8614 if (ret
== -ENODEV
) {
8615 printk(TPACPI_NOTICE
"disabling subdriver %s\n",
8625 dbg_printk(TPACPI_DBG_INIT
,
8626 "%s installed\n", ibm
->name
);
8629 mode_t mode
= iibm
->base_procfs_mode
;
8635 entry
= proc_create_data(ibm
->name
, mode
, proc_dir
,
8636 &dispatch_proc_fops
, ibm
);
8638 printk(TPACPI_ERR
"unable to create proc entry %s\n",
8643 ibm
->flags
.proc_created
= 1;
8646 list_add_tail(&ibm
->all_drivers
, &tpacpi_all_drivers
);
8651 dbg_printk(TPACPI_DBG_INIT
,
8652 "%s: at error exit path with result %d\n",
8656 return (ret
< 0)? ret
: 0;
8661 static bool __pure __init
tpacpi_is_fw_digit(const char c
)
8663 return (c
>= '0' && c
<= '9') || (c
>= 'A' && c
<= 'Z');
8666 /* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
8667 static bool __pure __init
tpacpi_is_valid_fw_id(const char* const s
,
8670 return s
&& strlen(s
) >= 8 &&
8671 tpacpi_is_fw_digit(s
[0]) &&
8672 tpacpi_is_fw_digit(s
[1]) &&
8673 s
[2] == t
&& s
[3] == 'T' &&
8674 tpacpi_is_fw_digit(s
[4]) &&
8675 tpacpi_is_fw_digit(s
[5]) &&
8676 s
[6] == 'W' && s
[7] == 'W';
8679 /* returns 0 - probe ok, or < 0 - probe error.
8680 * Probe ok doesn't mean thinkpad found.
8681 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
8682 static int __must_check __init
get_thinkpad_model_data(
8683 struct thinkpad_id_data
*tp
)
8685 const struct dmi_device
*dev
= NULL
;
8686 char ec_fw_string
[18];
8692 memset(tp
, 0, sizeof(*tp
));
8694 if (dmi_name_in_vendors("IBM"))
8695 tp
->vendor
= PCI_VENDOR_ID_IBM
;
8696 else if (dmi_name_in_vendors("LENOVO"))
8697 tp
->vendor
= PCI_VENDOR_ID_LENOVO
;
8701 s
= dmi_get_system_info(DMI_BIOS_VERSION
);
8702 tp
->bios_version_str
= kstrdup(s
, GFP_KERNEL
);
8703 if (s
&& !tp
->bios_version_str
)
8706 /* Really ancient ThinkPad 240X will fail this, which is fine */
8707 if (!tpacpi_is_valid_fw_id(tp
->bios_version_str
, 'E'))
8710 tp
->bios_model
= tp
->bios_version_str
[0]
8711 | (tp
->bios_version_str
[1] << 8);
8712 tp
->bios_release
= (tp
->bios_version_str
[4] << 8)
8713 | tp
->bios_version_str
[5];
8716 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
8717 * X32 or newer, all Z series; Some models must have an
8718 * up-to-date BIOS or they will not be detected.
8720 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
8722 while ((dev
= dmi_find_device(DMI_DEV_TYPE_OEM_STRING
, NULL
, dev
))) {
8723 if (sscanf(dev
->name
,
8724 "IBM ThinkPad Embedded Controller -[%17c",
8725 ec_fw_string
) == 1) {
8726 ec_fw_string
[sizeof(ec_fw_string
) - 1] = 0;
8727 ec_fw_string
[strcspn(ec_fw_string
, " ]")] = 0;
8729 tp
->ec_version_str
= kstrdup(ec_fw_string
, GFP_KERNEL
);
8730 if (!tp
->ec_version_str
)
8733 if (tpacpi_is_valid_fw_id(ec_fw_string
, 'H')) {
8734 tp
->ec_model
= ec_fw_string
[0]
8735 | (ec_fw_string
[1] << 8);
8736 tp
->ec_release
= (ec_fw_string
[4] << 8)
8739 printk(TPACPI_NOTICE
8740 "ThinkPad firmware release %s "
8741 "doesn't match the known patterns\n",
8743 printk(TPACPI_NOTICE
8744 "please report this to %s\n",
8751 s
= dmi_get_system_info(DMI_PRODUCT_VERSION
);
8752 if (s
&& !strnicmp(s
, "ThinkPad", 8)) {
8753 tp
->model_str
= kstrdup(s
, GFP_KERNEL
);
8758 s
= dmi_get_system_info(DMI_PRODUCT_NAME
);
8759 tp
->nummodel_str
= kstrdup(s
, GFP_KERNEL
);
8760 if (s
&& !tp
->nummodel_str
)
8766 static int __init
probe_for_thinkpad(void)
8773 /* It would be dangerous to run the driver in this case */
8774 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
8778 * Non-ancient models have better DMI tagging, but very old models
8779 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
8781 is_thinkpad
= (thinkpad_id
.model_str
!= NULL
) ||
8782 (thinkpad_id
.ec_model
!= 0) ||
8783 tpacpi_is_fw_known();
8785 /* The EC handler is required */
8786 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID
, &ec_handle
);
8790 "Not yet supported ThinkPad detected!\n");
8794 if (!is_thinkpad
&& !force_load
)
8800 static void __init
thinkpad_acpi_init_banner(void)
8802 printk(TPACPI_INFO
"%s v%s\n", TPACPI_DESC
, TPACPI_VERSION
);
8803 printk(TPACPI_INFO
"%s\n", TPACPI_URL
);
8805 printk(TPACPI_INFO
"ThinkPad BIOS %s, EC %s\n",
8806 (thinkpad_id
.bios_version_str
) ?
8807 thinkpad_id
.bios_version_str
: "unknown",
8808 (thinkpad_id
.ec_version_str
) ?
8809 thinkpad_id
.ec_version_str
: "unknown");
8811 BUG_ON(!thinkpad_id
.vendor
);
8813 if (thinkpad_id
.model_str
)
8814 printk(TPACPI_INFO
"%s %s, model %s\n",
8815 (thinkpad_id
.vendor
== PCI_VENDOR_ID_IBM
) ?
8816 "IBM" : ((thinkpad_id
.vendor
==
8817 PCI_VENDOR_ID_LENOVO
) ?
8818 "Lenovo" : "Unknown vendor"),
8819 thinkpad_id
.model_str
,
8820 (thinkpad_id
.nummodel_str
) ?
8821 thinkpad_id
.nummodel_str
: "unknown");
8824 /* Module init, exit, parameters */
8826 static struct ibm_init_struct ibms_init
[] __initdata
= {
8828 .data
= &thinkpad_acpi_driver_data
,
8831 .init
= hotkey_init
,
8832 .data
= &hotkey_driver_data
,
8835 .init
= bluetooth_init
,
8836 .data
= &bluetooth_driver_data
,
8840 .data
= &wan_driver_data
,
8844 .data
= &uwb_driver_data
,
8846 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
8849 .base_procfs_mode
= S_IRUSR
,
8850 .data
= &video_driver_data
,
8855 .data
= &light_driver_data
,
8859 .data
= &cmos_driver_data
,
8863 .data
= &led_driver_data
,
8867 .data
= &beep_driver_data
,
8870 .init
= thermal_init
,
8871 .data
= &thermal_driver_data
,
8874 .data
= &ecdump_driver_data
,
8877 .init
= brightness_init
,
8878 .data
= &brightness_driver_data
,
8881 .init
= volume_init
,
8882 .data
= &volume_driver_data
,
8886 .data
= &fan_driver_data
,
8890 static int __init
set_ibm_param(const char *val
, struct kernel_param
*kp
)
8893 struct ibm_struct
*ibm
;
8895 if (!kp
|| !kp
->name
|| !val
)
8898 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
8899 ibm
= ibms_init
[i
].data
;
8900 WARN_ON(ibm
== NULL
);
8902 if (!ibm
|| !ibm
->name
)
8905 if (strcmp(ibm
->name
, kp
->name
) == 0 && ibm
->write
) {
8906 if (strlen(val
) > sizeof(ibms_init
[i
].param
) - 2)
8908 strcpy(ibms_init
[i
].param
, val
);
8909 strcat(ibms_init
[i
].param
, ",");
8917 module_param(experimental
, int, 0444);
8918 MODULE_PARM_DESC(experimental
,
8919 "Enables experimental features when non-zero");
8921 module_param_named(debug
, dbg_level
, uint
, 0);
8922 MODULE_PARM_DESC(debug
, "Sets debug level bit-mask");
8924 module_param(force_load
, bool, 0444);
8925 MODULE_PARM_DESC(force_load
,
8926 "Attempts to load the driver even on a "
8927 "mis-identified ThinkPad when true");
8929 module_param_named(fan_control
, fan_control_allowed
, bool, 0444);
8930 MODULE_PARM_DESC(fan_control
,
8931 "Enables setting fan parameters features when true");
8933 module_param_named(brightness_mode
, brightness_mode
, uint
, 0444);
8934 MODULE_PARM_DESC(brightness_mode
,
8935 "Selects brightness control strategy: "
8936 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
8938 module_param(brightness_enable
, uint
, 0444);
8939 MODULE_PARM_DESC(brightness_enable
,
8940 "Enables backlight control when 1, disables when 0");
8942 module_param(hotkey_report_mode
, uint
, 0444);
8943 MODULE_PARM_DESC(hotkey_report_mode
,
8944 "used for backwards compatibility with userspace, "
8945 "see documentation");
8947 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
8948 module_param_named(volume_mode
, volume_mode
, uint
, 0444);
8949 MODULE_PARM_DESC(volume_mode
,
8950 "Selects volume control strategy: "
8951 "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
8953 module_param_named(volume_capabilities
, volume_capabilities
, uint
, 0444);
8954 MODULE_PARM_DESC(volume_capabilities
,
8955 "Selects the mixer capabilites: "
8956 "0=auto, 1=volume and mute, 2=mute only");
8958 module_param_named(volume_control
, volume_control_allowed
, bool, 0444);
8959 MODULE_PARM_DESC(volume_control
,
8960 "Enables software override for the console audio "
8961 "control when true");
8963 /* ALSA module API parameters */
8964 module_param_named(index
, alsa_index
, int, 0444);
8965 MODULE_PARM_DESC(index
, "ALSA index for the ACPI EC Mixer");
8966 module_param_named(id
, alsa_id
, charp
, 0444);
8967 MODULE_PARM_DESC(id
, "ALSA id for the ACPI EC Mixer");
8968 module_param_named(enable
, alsa_enable
, bool, 0444);
8969 MODULE_PARM_DESC(enable
, "Enable the ALSA interface for the ACPI EC Mixer");
8970 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
8972 #define TPACPI_PARAM(feature) \
8973 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
8974 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
8975 "at module load, see documentation")
8977 TPACPI_PARAM(hotkey
);
8978 TPACPI_PARAM(bluetooth
);
8979 TPACPI_PARAM(video
);
8980 TPACPI_PARAM(light
);
8984 TPACPI_PARAM(ecdump
);
8985 TPACPI_PARAM(brightness
);
8986 TPACPI_PARAM(volume
);
8989 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
8990 module_param(dbg_wlswemul
, uint
, 0444);
8991 MODULE_PARM_DESC(dbg_wlswemul
, "Enables WLSW emulation");
8992 module_param_named(wlsw_state
, tpacpi_wlsw_emulstate
, bool, 0);
8993 MODULE_PARM_DESC(wlsw_state
,
8994 "Initial state of the emulated WLSW switch");
8996 module_param(dbg_bluetoothemul
, uint
, 0444);
8997 MODULE_PARM_DESC(dbg_bluetoothemul
, "Enables bluetooth switch emulation");
8998 module_param_named(bluetooth_state
, tpacpi_bluetooth_emulstate
, bool, 0);
8999 MODULE_PARM_DESC(bluetooth_state
,
9000 "Initial state of the emulated bluetooth switch");
9002 module_param(dbg_wwanemul
, uint
, 0444);
9003 MODULE_PARM_DESC(dbg_wwanemul
, "Enables WWAN switch emulation");
9004 module_param_named(wwan_state
, tpacpi_wwan_emulstate
, bool, 0);
9005 MODULE_PARM_DESC(wwan_state
,
9006 "Initial state of the emulated WWAN switch");
9008 module_param(dbg_uwbemul
, uint
, 0444);
9009 MODULE_PARM_DESC(dbg_uwbemul
, "Enables UWB switch emulation");
9010 module_param_named(uwb_state
, tpacpi_uwb_emulstate
, bool, 0);
9011 MODULE_PARM_DESC(uwb_state
,
9012 "Initial state of the emulated UWB switch");
9015 static void thinkpad_acpi_module_exit(void)
9017 struct ibm_struct
*ibm
, *itmp
;
9019 tpacpi_lifecycle
= TPACPI_LIFE_EXITING
;
9021 list_for_each_entry_safe_reverse(ibm
, itmp
,
9022 &tpacpi_all_drivers
,
9027 dbg_printk(TPACPI_DBG_INIT
, "finished subdriver exit path...\n");
9029 if (tpacpi_inputdev
) {
9030 if (tp_features
.input_device_registered
)
9031 input_unregister_device(tpacpi_inputdev
);
9033 input_free_device(tpacpi_inputdev
);
9037 hwmon_device_unregister(tpacpi_hwmon
);
9039 if (tp_features
.sensors_pdev_attrs_registered
)
9040 device_remove_file(&tpacpi_sensors_pdev
->dev
,
9041 &dev_attr_thinkpad_acpi_pdev_name
);
9042 if (tpacpi_sensors_pdev
)
9043 platform_device_unregister(tpacpi_sensors_pdev
);
9045 platform_device_unregister(tpacpi_pdev
);
9047 if (tp_features
.sensors_pdrv_attrs_registered
)
9048 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver
.driver
);
9049 if (tp_features
.platform_drv_attrs_registered
)
9050 tpacpi_remove_driver_attributes(&tpacpi_pdriver
.driver
);
9052 if (tp_features
.sensors_pdrv_registered
)
9053 platform_driver_unregister(&tpacpi_hwmon_pdriver
);
9055 if (tp_features
.platform_drv_registered
)
9056 platform_driver_unregister(&tpacpi_pdriver
);
9059 remove_proc_entry(TPACPI_PROC_DIR
, acpi_root_dir
);
9062 destroy_workqueue(tpacpi_wq
);
9064 kfree(thinkpad_id
.bios_version_str
);
9065 kfree(thinkpad_id
.ec_version_str
);
9066 kfree(thinkpad_id
.model_str
);
9070 static int __init
thinkpad_acpi_module_init(void)
9074 tpacpi_lifecycle
= TPACPI_LIFE_INIT
;
9076 /* Parameter checking */
9077 if (hotkey_report_mode
> 2)
9080 /* Driver-level probe */
9082 ret
= get_thinkpad_model_data(&thinkpad_id
);
9085 "unable to get DMI data: %d\n", ret
);
9086 thinkpad_acpi_module_exit();
9089 ret
= probe_for_thinkpad();
9091 thinkpad_acpi_module_exit();
9095 /* Driver initialization */
9097 thinkpad_acpi_init_banner();
9098 tpacpi_check_outdated_fw();
9100 TPACPI_ACPIHANDLE_INIT(ecrd
);
9101 TPACPI_ACPIHANDLE_INIT(ecwr
);
9103 tpacpi_wq
= create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME
);
9105 thinkpad_acpi_module_exit();
9109 proc_dir
= proc_mkdir(TPACPI_PROC_DIR
, acpi_root_dir
);
9112 "unable to create proc dir " TPACPI_PROC_DIR
);
9113 thinkpad_acpi_module_exit();
9117 ret
= platform_driver_register(&tpacpi_pdriver
);
9120 "unable to register main platform driver\n");
9121 thinkpad_acpi_module_exit();
9124 tp_features
.platform_drv_registered
= 1;
9126 ret
= platform_driver_register(&tpacpi_hwmon_pdriver
);
9129 "unable to register hwmon platform driver\n");
9130 thinkpad_acpi_module_exit();
9133 tp_features
.sensors_pdrv_registered
= 1;
9135 ret
= tpacpi_create_driver_attributes(&tpacpi_pdriver
.driver
);
9137 tp_features
.platform_drv_attrs_registered
= 1;
9138 ret
= tpacpi_create_driver_attributes(
9139 &tpacpi_hwmon_pdriver
.driver
);
9143 "unable to create sysfs driver attributes\n");
9144 thinkpad_acpi_module_exit();
9147 tp_features
.sensors_pdrv_attrs_registered
= 1;
9150 /* Device initialization */
9151 tpacpi_pdev
= platform_device_register_simple(TPACPI_DRVR_NAME
, -1,
9153 if (IS_ERR(tpacpi_pdev
)) {
9154 ret
= PTR_ERR(tpacpi_pdev
);
9156 printk(TPACPI_ERR
"unable to register platform device\n");
9157 thinkpad_acpi_module_exit();
9160 tpacpi_sensors_pdev
= platform_device_register_simple(
9161 TPACPI_HWMON_DRVR_NAME
,
9163 if (IS_ERR(tpacpi_sensors_pdev
)) {
9164 ret
= PTR_ERR(tpacpi_sensors_pdev
);
9165 tpacpi_sensors_pdev
= NULL
;
9167 "unable to register hwmon platform device\n");
9168 thinkpad_acpi_module_exit();
9171 ret
= device_create_file(&tpacpi_sensors_pdev
->dev
,
9172 &dev_attr_thinkpad_acpi_pdev_name
);
9175 "unable to create sysfs hwmon device attributes\n");
9176 thinkpad_acpi_module_exit();
9179 tp_features
.sensors_pdev_attrs_registered
= 1;
9180 tpacpi_hwmon
= hwmon_device_register(&tpacpi_sensors_pdev
->dev
);
9181 if (IS_ERR(tpacpi_hwmon
)) {
9182 ret
= PTR_ERR(tpacpi_hwmon
);
9183 tpacpi_hwmon
= NULL
;
9184 printk(TPACPI_ERR
"unable to register hwmon device\n");
9185 thinkpad_acpi_module_exit();
9188 mutex_init(&tpacpi_inputdev_send_mutex
);
9189 tpacpi_inputdev
= input_allocate_device();
9190 if (!tpacpi_inputdev
) {
9191 printk(TPACPI_ERR
"unable to allocate input device\n");
9192 thinkpad_acpi_module_exit();
9195 /* Prepare input device, but don't register */
9196 tpacpi_inputdev
->name
= "ThinkPad Extra Buttons";
9197 tpacpi_inputdev
->phys
= TPACPI_DRVR_NAME
"/input0";
9198 tpacpi_inputdev
->id
.bustype
= BUS_HOST
;
9199 tpacpi_inputdev
->id
.vendor
= thinkpad_id
.vendor
;
9200 tpacpi_inputdev
->id
.product
= TPACPI_HKEY_INPUT_PRODUCT
;
9201 tpacpi_inputdev
->id
.version
= TPACPI_HKEY_INPUT_VERSION
;
9202 tpacpi_inputdev
->dev
.parent
= &tpacpi_pdev
->dev
;
9205 /* Init subdriver dependencies */
9206 tpacpi_detect_brightness_capabilities();
9208 /* Init subdrivers */
9209 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
9210 ret
= ibm_init(&ibms_init
[i
]);
9211 if (ret
>= 0 && *ibms_init
[i
].param
)
9212 ret
= ibms_init
[i
].data
->write(ibms_init
[i
].param
);
9214 thinkpad_acpi_module_exit();
9219 tpacpi_lifecycle
= TPACPI_LIFE_RUNNING
;
9221 ret
= input_register_device(tpacpi_inputdev
);
9223 printk(TPACPI_ERR
"unable to register input device\n");
9224 thinkpad_acpi_module_exit();
9227 tp_features
.input_device_registered
= 1;
9233 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME
);
9236 * This will autoload the driver in almost every ThinkPad
9237 * in widespread use.
9239 * Only _VERY_ old models, like the 240, 240x and 570 lack
9240 * the HKEY event interface.
9242 MODULE_DEVICE_TABLE(acpi
, ibm_htk_device_ids
);
9245 * DMI matching for module autoloading
9247 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
9248 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
9250 * Only models listed in thinkwiki will be supported, so add yours
9251 * if it is not there yet.
9253 #define IBM_BIOS_MODULE_ALIAS(__type) \
9254 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
9256 /* Ancient thinkpad BIOSes have to be identified by
9257 * BIOS type or model number, and there are far less
9258 * BIOS types than model numbers... */
9259 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
9261 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
9262 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
9263 MODULE_DESCRIPTION(TPACPI_DESC
);
9264 MODULE_VERSION(TPACPI_VERSION
);
9265 MODULE_LICENSE("GPL");
9267 module_init(thinkpad_acpi_module_init
);
9268 module_exit(thinkpad_acpi_module_exit
);