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>
62 #include <linux/nvram.h>
63 #include <linux/proc_fs.h>
64 #include <linux/seq_file.h>
65 #include <linux/sysfs.h>
66 #include <linux/backlight.h>
68 #include <linux/platform_device.h>
69 #include <linux/hwmon.h>
70 #include <linux/hwmon-sysfs.h>
71 #include <linux/input.h>
72 #include <linux/leds.h>
73 #include <linux/rfkill.h>
74 #include <asm/uaccess.h>
76 #include <linux/dmi.h>
77 #include <linux/jiffies.h>
78 #include <linux/workqueue.h>
80 #include <sound/core.h>
81 #include <sound/control.h>
82 #include <sound/initval.h>
84 #include <acpi/acpi_drivers.h>
86 #include <linux/pci_ids.h>
89 /* ThinkPad CMOS commands */
90 #define TP_CMOS_VOLUME_DOWN 0
91 #define TP_CMOS_VOLUME_UP 1
92 #define TP_CMOS_VOLUME_MUTE 2
93 #define TP_CMOS_BRIGHTNESS_UP 4
94 #define TP_CMOS_BRIGHTNESS_DOWN 5
95 #define TP_CMOS_THINKLIGHT_ON 12
96 #define TP_CMOS_THINKLIGHT_OFF 13
100 TP_NVRAM_ADDR_HK2
= 0x57,
101 TP_NVRAM_ADDR_THINKLIGHT
= 0x58,
102 TP_NVRAM_ADDR_VIDEO
= 0x59,
103 TP_NVRAM_ADDR_BRIGHTNESS
= 0x5e,
104 TP_NVRAM_ADDR_MIXER
= 0x60,
107 /* NVRAM bit masks */
109 TP_NVRAM_MASK_HKT_THINKPAD
= 0x08,
110 TP_NVRAM_MASK_HKT_ZOOM
= 0x20,
111 TP_NVRAM_MASK_HKT_DISPLAY
= 0x40,
112 TP_NVRAM_MASK_HKT_HIBERNATE
= 0x80,
113 TP_NVRAM_MASK_THINKLIGHT
= 0x10,
114 TP_NVRAM_MASK_HKT_DISPEXPND
= 0x30,
115 TP_NVRAM_MASK_HKT_BRIGHTNESS
= 0x20,
116 TP_NVRAM_MASK_LEVEL_BRIGHTNESS
= 0x0f,
117 TP_NVRAM_POS_LEVEL_BRIGHTNESS
= 0,
118 TP_NVRAM_MASK_MUTE
= 0x40,
119 TP_NVRAM_MASK_HKT_VOLUME
= 0x80,
120 TP_NVRAM_MASK_LEVEL_VOLUME
= 0x0f,
121 TP_NVRAM_POS_LEVEL_VOLUME
= 0,
124 /* Misc NVRAM-related */
126 TP_NVRAM_LEVEL_VOLUME_MAX
= 14,
130 #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068"
131 #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068"
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
;
516 #define TPACPI_HANDLE(object, parent, paths...) \
517 static acpi_handle object##_handle; \
518 static acpi_handle *object##_parent = &parent##_handle; \
519 static char *object##_path; \
520 static char *object##_paths[] = { paths }
522 TPACPI_HANDLE(ec
, root
, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
523 "\\_SB.PCI.ISA.EC", /* 570 */
524 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
525 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
526 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
527 "\\_SB.PCI0.ICH3.EC0", /* R31 */
528 "\\_SB.PCI0.LPC0.EC", /* X100e and a few others */
529 "\\_SB.PCI0.LPC.EC", /* all others */
532 TPACPI_HANDLE(ecrd
, ec
, "ECRD"); /* 570 */
533 TPACPI_HANDLE(ecwr
, ec
, "ECWR"); /* 570 */
535 TPACPI_HANDLE(cmos
, root
, "\\UCMS", /* R50, R50e, R50p, R51, */
537 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
538 "\\CMS", /* R40, R40e */
541 TPACPI_HANDLE(hkey
, ec
, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
542 "^HKEY", /* R30, R31 */
543 "HKEY", /* all others */
546 TPACPI_HANDLE(vid
, root
, "\\_SB.PCI.AGP.VGA", /* 570 */
547 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
548 "\\_SB.PCI0.VID0", /* 770e */
549 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
550 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
551 "\\_SB.PCI0.AGP.VID", /* all others */
555 /*************************************************************************
559 static int acpi_evalf(acpi_handle handle
,
560 void *res
, char *method
, char *fmt
, ...)
563 struct acpi_object_list params
;
564 union acpi_object in_objs
[TPACPI_MAX_ACPI_ARGS
];
565 struct acpi_buffer result
, *resultp
;
566 union acpi_object out_obj
;
574 printk(TPACPI_ERR
"acpi_evalf() called with empty format\n");
587 params
.pointer
= &in_objs
[0];
594 in_objs
[params
.count
].integer
.value
= va_arg(ap
, int);
595 in_objs
[params
.count
++].type
= ACPI_TYPE_INTEGER
;
597 /* add more types as needed */
599 printk(TPACPI_ERR
"acpi_evalf() called "
600 "with invalid format character '%c'\n", c
);
606 if (res_type
!= 'v') {
607 result
.length
= sizeof(out_obj
);
608 result
.pointer
= &out_obj
;
613 status
= acpi_evaluate_object(handle
, method
, ¶ms
, resultp
);
618 *(int *)res
= out_obj
.integer
.value
;
619 success
= status
== AE_OK
&& out_obj
.type
== ACPI_TYPE_INTEGER
;
622 success
= status
== AE_OK
;
624 /* add more types as needed */
626 printk(TPACPI_ERR
"acpi_evalf() called "
627 "with invalid format character '%c'\n", res_type
);
631 if (!success
&& !quiet
)
632 printk(TPACPI_ERR
"acpi_evalf(%s, %s, ...) failed: %d\n",
633 method
, fmt0
, status
);
638 static int acpi_ec_read(int i
, u8
*p
)
643 if (!acpi_evalf(ecrd_handle
, &v
, NULL
, "dd", i
))
647 if (ec_read(i
, p
) < 0)
654 static int acpi_ec_write(int i
, u8 v
)
657 if (!acpi_evalf(ecwr_handle
, NULL
, NULL
, "vdd", i
, v
))
660 if (ec_write(i
, v
) < 0)
667 static int issue_thinkpad_cmos_command(int cmos_cmd
)
672 if (!acpi_evalf(cmos_handle
, NULL
, NULL
, "vd", cmos_cmd
))
678 /*************************************************************************
682 #define TPACPI_ACPIHANDLE_INIT(object) \
683 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
684 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
686 static void drv_acpi_handle_init(char *name
,
687 acpi_handle
*handle
, acpi_handle parent
,
688 char **paths
, int num_paths
, char **path
)
693 vdbg_printk(TPACPI_DBG_INIT
, "trying to locate ACPI handle for %s\n",
696 for (i
= 0; i
< num_paths
; i
++) {
697 status
= acpi_get_handle(parent
, paths
[i
], handle
);
698 if (ACPI_SUCCESS(status
)) {
700 dbg_printk(TPACPI_DBG_INIT
,
701 "Found ACPI handle %s for %s\n",
707 vdbg_printk(TPACPI_DBG_INIT
, "ACPI handle for %s not found\n",
712 static void dispatch_acpi_notify(acpi_handle handle
, u32 event
, void *data
)
714 struct ibm_struct
*ibm
= data
;
716 if (tpacpi_lifecycle
!= TPACPI_LIFE_RUNNING
)
719 if (!ibm
|| !ibm
->acpi
|| !ibm
->acpi
->notify
)
722 ibm
->acpi
->notify(ibm
, event
);
725 static int __init
setup_acpi_notify(struct ibm_struct
*ibm
)
732 if (!*ibm
->acpi
->handle
)
735 vdbg_printk(TPACPI_DBG_INIT
,
736 "setting up ACPI notify for %s\n", ibm
->name
);
738 rc
= acpi_bus_get_device(*ibm
->acpi
->handle
, &ibm
->acpi
->device
);
740 printk(TPACPI_ERR
"acpi_bus_get_device(%s) failed: %d\n",
745 ibm
->acpi
->device
->driver_data
= ibm
;
746 sprintf(acpi_device_class(ibm
->acpi
->device
), "%s/%s",
747 TPACPI_ACPI_EVENT_PREFIX
,
750 status
= acpi_install_notify_handler(*ibm
->acpi
->handle
,
751 ibm
->acpi
->type
, dispatch_acpi_notify
, ibm
);
752 if (ACPI_FAILURE(status
)) {
753 if (status
== AE_ALREADY_EXISTS
) {
755 "another device driver is already "
756 "handling %s events\n", ibm
->name
);
759 "acpi_install_notify_handler(%s) failed: %d\n",
764 ibm
->flags
.acpi_notify_installed
= 1;
768 static int __init
tpacpi_device_add(struct acpi_device
*device
)
773 static int __init
register_tpacpi_subdriver(struct ibm_struct
*ibm
)
777 dbg_printk(TPACPI_DBG_INIT
,
778 "registering %s as an ACPI driver\n", ibm
->name
);
782 ibm
->acpi
->driver
= kzalloc(sizeof(struct acpi_driver
), GFP_KERNEL
);
783 if (!ibm
->acpi
->driver
) {
785 "failed to allocate memory for ibm->acpi->driver\n");
789 sprintf(ibm
->acpi
->driver
->name
, "%s_%s", TPACPI_NAME
, ibm
->name
);
790 ibm
->acpi
->driver
->ids
= ibm
->acpi
->hid
;
792 ibm
->acpi
->driver
->ops
.add
= &tpacpi_device_add
;
794 rc
= acpi_bus_register_driver(ibm
->acpi
->driver
);
796 printk(TPACPI_ERR
"acpi_bus_register_driver(%s) failed: %d\n",
798 kfree(ibm
->acpi
->driver
);
799 ibm
->acpi
->driver
= NULL
;
801 ibm
->flags
.acpi_driver_registered
= 1;
807 /****************************************************************************
808 ****************************************************************************
812 ****************************************************************************
813 ****************************************************************************/
815 static int dispatch_proc_show(struct seq_file
*m
, void *v
)
817 struct ibm_struct
*ibm
= m
->private;
819 if (!ibm
|| !ibm
->read
)
824 static int dispatch_proc_open(struct inode
*inode
, struct file
*file
)
826 return single_open(file
, dispatch_proc_show
, PDE(inode
)->data
);
829 static ssize_t
dispatch_proc_write(struct file
*file
,
830 const char __user
*userbuf
,
831 size_t count
, loff_t
*pos
)
833 struct ibm_struct
*ibm
= PDE(file
->f_path
.dentry
->d_inode
)->data
;
837 if (!ibm
|| !ibm
->write
)
839 if (count
> PAGE_SIZE
- 2)
842 kernbuf
= kmalloc(count
+ 2, GFP_KERNEL
);
846 if (copy_from_user(kernbuf
, userbuf
, count
)) {
852 strcat(kernbuf
, ",");
853 ret
= ibm
->write(kernbuf
);
862 static const struct file_operations dispatch_proc_fops
= {
863 .owner
= THIS_MODULE
,
864 .open
= dispatch_proc_open
,
867 .release
= single_release
,
868 .write
= dispatch_proc_write
,
871 static char *next_cmd(char **cmds
)
876 while ((end
= strchr(start
, ',')) && end
== start
)
888 /****************************************************************************
889 ****************************************************************************
891 * Device model: input, hwmon and platform
893 ****************************************************************************
894 ****************************************************************************/
896 static struct platform_device
*tpacpi_pdev
;
897 static struct platform_device
*tpacpi_sensors_pdev
;
898 static struct device
*tpacpi_hwmon
;
899 static struct input_dev
*tpacpi_inputdev
;
900 static struct mutex tpacpi_inputdev_send_mutex
;
901 static LIST_HEAD(tpacpi_all_drivers
);
903 static int tpacpi_suspend_handler(struct platform_device
*pdev
,
906 struct ibm_struct
*ibm
, *itmp
;
908 list_for_each_entry_safe(ibm
, itmp
,
912 (ibm
->suspend
)(state
);
918 static int tpacpi_resume_handler(struct platform_device
*pdev
)
920 struct ibm_struct
*ibm
, *itmp
;
922 list_for_each_entry_safe(ibm
, itmp
,
932 static void tpacpi_shutdown_handler(struct platform_device
*pdev
)
934 struct ibm_struct
*ibm
, *itmp
;
936 list_for_each_entry_safe(ibm
, itmp
,
944 static struct platform_driver tpacpi_pdriver
= {
946 .name
= TPACPI_DRVR_NAME
,
947 .owner
= THIS_MODULE
,
949 .suspend
= tpacpi_suspend_handler
,
950 .resume
= tpacpi_resume_handler
,
951 .shutdown
= tpacpi_shutdown_handler
,
954 static struct platform_driver tpacpi_hwmon_pdriver
= {
956 .name
= TPACPI_HWMON_DRVR_NAME
,
957 .owner
= THIS_MODULE
,
961 /*************************************************************************
962 * sysfs support helpers
965 struct attribute_set
{
966 unsigned int members
, max_members
;
967 struct attribute_group group
;
970 struct attribute_set_obj
{
971 struct attribute_set s
;
973 } __attribute__((packed
));
975 static struct attribute_set
*create_attr_set(unsigned int max_members
,
978 struct attribute_set_obj
*sobj
;
980 if (max_members
== 0)
983 /* Allocates space for implicit NULL at the end too */
984 sobj
= kzalloc(sizeof(struct attribute_set_obj
) +
985 max_members
* sizeof(struct attribute
*),
989 sobj
->s
.max_members
= max_members
;
990 sobj
->s
.group
.attrs
= &sobj
->a
;
991 sobj
->s
.group
.name
= name
;
996 #define destroy_attr_set(_set) \
999 /* not multi-threaded safe, use it in a single thread per set */
1000 static int add_to_attr_set(struct attribute_set
*s
, struct attribute
*attr
)
1005 if (s
->members
>= s
->max_members
)
1008 s
->group
.attrs
[s
->members
] = attr
;
1014 static int add_many_to_attr_set(struct attribute_set
*s
,
1015 struct attribute
**attr
,
1020 for (i
= 0; i
< count
; i
++) {
1021 res
= add_to_attr_set(s
, attr
[i
]);
1029 static void delete_attr_set(struct attribute_set
*s
, struct kobject
*kobj
)
1031 sysfs_remove_group(kobj
, &s
->group
);
1032 destroy_attr_set(s
);
1035 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
1036 sysfs_create_group(_kobj, &_attr_set->group)
1038 static int parse_strtoul(const char *buf
,
1039 unsigned long max
, unsigned long *value
)
1043 while (*buf
&& isspace(*buf
))
1045 *value
= simple_strtoul(buf
, &endp
, 0);
1046 while (*endp
&& isspace(*endp
))
1048 if (*endp
|| *value
> max
)
1054 static void tpacpi_disable_brightness_delay(void)
1056 if (acpi_evalf(hkey_handle
, NULL
, "PWMS", "qvd", 0))
1057 printk(TPACPI_NOTICE
1058 "ACPI backlight control delay disabled\n");
1061 static void printk_deprecated_attribute(const char * const what
,
1062 const char * const details
)
1064 tpacpi_log_usertask("deprecated sysfs attribute");
1065 printk(TPACPI_WARN
"WARNING: sysfs attribute %s is deprecated and "
1066 "will be removed. %s\n",
1070 /*************************************************************************
1071 * rfkill and radio control support helpers
1075 * ThinkPad-ACPI firmware handling model:
1077 * WLSW (master wireless switch) is event-driven, and is common to all
1078 * firmware-controlled radios. It cannot be controlled, just monitored,
1079 * as expected. It overrides all radio state in firmware
1081 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1082 * (TODO: verify how WLSW interacts with the returned radio state).
1084 * The only time there are shadow radio state changes, is when
1085 * masked-off hotkeys are used.
1089 * Internal driver API for radio state:
1091 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1092 * bool: true means radio blocked (off)
1094 enum tpacpi_rfkill_state
{
1095 TPACPI_RFK_RADIO_OFF
= 0,
1099 /* rfkill switches */
1100 enum tpacpi_rfk_id
{
1101 TPACPI_RFK_BLUETOOTH_SW_ID
= 0,
1102 TPACPI_RFK_WWAN_SW_ID
,
1103 TPACPI_RFK_UWB_SW_ID
,
1107 static const char *tpacpi_rfkill_names
[] = {
1108 [TPACPI_RFK_BLUETOOTH_SW_ID
] = "bluetooth",
1109 [TPACPI_RFK_WWAN_SW_ID
] = "wwan",
1110 [TPACPI_RFK_UWB_SW_ID
] = "uwb",
1111 [TPACPI_RFK_SW_MAX
] = NULL
1114 /* ThinkPad-ACPI rfkill subdriver */
1116 struct rfkill
*rfkill
;
1117 enum tpacpi_rfk_id id
;
1118 const struct tpacpi_rfk_ops
*ops
;
1121 struct tpacpi_rfk_ops
{
1122 /* firmware interface */
1123 int (*get_status
)(void);
1124 int (*set_status
)(const enum tpacpi_rfkill_state
);
1127 static struct tpacpi_rfk
*tpacpi_rfkill_switches
[TPACPI_RFK_SW_MAX
];
1129 /* Query FW and update rfkill sw state for a given rfkill switch */
1130 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk
*tp_rfk
)
1137 status
= (tp_rfk
->ops
->get_status
)();
1141 rfkill_set_sw_state(tp_rfk
->rfkill
,
1142 (status
== TPACPI_RFK_RADIO_OFF
));
1147 /* Query FW and update rfkill sw state for all rfkill switches */
1148 static void tpacpi_rfk_update_swstate_all(void)
1152 for (i
= 0; i
< TPACPI_RFK_SW_MAX
; i
++)
1153 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[i
]);
1157 * Sync the HW-blocking state of all rfkill switches,
1158 * do notice it causes the rfkill core to schedule uevents
1160 static void tpacpi_rfk_update_hwblock_state(bool blocked
)
1163 struct tpacpi_rfk
*tp_rfk
;
1165 for (i
= 0; i
< TPACPI_RFK_SW_MAX
; i
++) {
1166 tp_rfk
= tpacpi_rfkill_switches
[i
];
1168 if (rfkill_set_hw_state(tp_rfk
->rfkill
,
1170 /* ignore -- we track sw block */
1176 /* Call to get the WLSW state from the firmware */
1177 static int hotkey_get_wlsw(void);
1179 /* Call to query WLSW state and update all rfkill switches */
1180 static bool tpacpi_rfk_check_hwblock_state(void)
1182 int res
= hotkey_get_wlsw();
1185 /* When unknown or unsupported, we have to assume it is unblocked */
1189 hw_blocked
= (res
== TPACPI_RFK_RADIO_OFF
);
1190 tpacpi_rfk_update_hwblock_state(hw_blocked
);
1195 static int tpacpi_rfk_hook_set_block(void *data
, bool blocked
)
1197 struct tpacpi_rfk
*tp_rfk
= data
;
1200 dbg_printk(TPACPI_DBG_RFKILL
,
1201 "request to change radio state to %s\n",
1202 blocked
? "blocked" : "unblocked");
1204 /* try to set radio state */
1205 res
= (tp_rfk
->ops
->set_status
)(blocked
?
1206 TPACPI_RFK_RADIO_OFF
: TPACPI_RFK_RADIO_ON
);
1208 /* and update the rfkill core with whatever the FW really did */
1209 tpacpi_rfk_update_swstate(tp_rfk
);
1211 return (res
< 0) ? res
: 0;
1214 static const struct rfkill_ops tpacpi_rfk_rfkill_ops
= {
1215 .set_block
= tpacpi_rfk_hook_set_block
,
1218 static int __init
tpacpi_new_rfkill(const enum tpacpi_rfk_id id
,
1219 const struct tpacpi_rfk_ops
*tp_rfkops
,
1220 const enum rfkill_type rfktype
,
1222 const bool set_default
)
1224 struct tpacpi_rfk
*atp_rfk
;
1226 bool sw_state
= false;
1230 BUG_ON(id
>= TPACPI_RFK_SW_MAX
|| tpacpi_rfkill_switches
[id
]);
1232 atp_rfk
= kzalloc(sizeof(struct tpacpi_rfk
), GFP_KERNEL
);
1234 atp_rfk
->rfkill
= rfkill_alloc(name
,
1237 &tpacpi_rfk_rfkill_ops
,
1239 if (!atp_rfk
|| !atp_rfk
->rfkill
) {
1241 "failed to allocate memory for rfkill class\n");
1247 atp_rfk
->ops
= tp_rfkops
;
1249 sw_status
= (tp_rfkops
->get_status
)();
1250 if (sw_status
< 0) {
1252 "failed to read initial state for %s, error %d\n",
1255 sw_state
= (sw_status
== TPACPI_RFK_RADIO_OFF
);
1257 /* try to keep the initial state, since we ask the
1258 * firmware to preserve it across S5 in NVRAM */
1259 rfkill_init_sw_state(atp_rfk
->rfkill
, sw_state
);
1262 hw_state
= tpacpi_rfk_check_hwblock_state();
1263 rfkill_set_hw_state(atp_rfk
->rfkill
, hw_state
);
1265 res
= rfkill_register(atp_rfk
->rfkill
);
1268 "failed to register %s rfkill switch: %d\n",
1270 rfkill_destroy(atp_rfk
->rfkill
);
1275 tpacpi_rfkill_switches
[id
] = atp_rfk
;
1277 printk(TPACPI_INFO
"rfkill switch %s: radio is %sblocked\n",
1278 name
, (sw_state
|| hw_state
) ? "" : "un");
1282 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id
)
1284 struct tpacpi_rfk
*tp_rfk
;
1286 BUG_ON(id
>= TPACPI_RFK_SW_MAX
);
1288 tp_rfk
= tpacpi_rfkill_switches
[id
];
1290 rfkill_unregister(tp_rfk
->rfkill
);
1291 rfkill_destroy(tp_rfk
->rfkill
);
1292 tpacpi_rfkill_switches
[id
] = NULL
;
1297 static void printk_deprecated_rfkill_attribute(const char * const what
)
1299 printk_deprecated_attribute(what
,
1300 "Please switch to generic rfkill before year 2010");
1303 /* sysfs <radio> enable ------------------------------------------------ */
1304 static ssize_t
tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id
,
1305 struct device_attribute
*attr
,
1310 printk_deprecated_rfkill_attribute(attr
->attr
.name
);
1312 /* This is in the ABI... */
1313 if (tpacpi_rfk_check_hwblock_state()) {
1314 status
= TPACPI_RFK_RADIO_OFF
;
1316 status
= tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[id
]);
1321 return snprintf(buf
, PAGE_SIZE
, "%d\n",
1322 (status
== TPACPI_RFK_RADIO_ON
) ? 1 : 0);
1325 static ssize_t
tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id
,
1326 struct device_attribute
*attr
,
1327 const char *buf
, size_t count
)
1332 printk_deprecated_rfkill_attribute(attr
->attr
.name
);
1334 if (parse_strtoul(buf
, 1, &t
))
1337 tpacpi_disclose_usertask(attr
->attr
.name
, "set to %ld\n", t
);
1339 /* This is in the ABI... */
1340 if (tpacpi_rfk_check_hwblock_state() && !!t
)
1343 res
= tpacpi_rfkill_switches
[id
]->ops
->set_status((!!t
) ?
1344 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
);
1345 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[id
]);
1347 return (res
< 0) ? res
: count
;
1350 /* procfs -------------------------------------------------------------- */
1351 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id
,
1354 if (id
>= TPACPI_RFK_SW_MAX
)
1355 seq_printf(m
, "status:\t\tnot supported\n");
1359 /* This is in the ABI... */
1360 if (tpacpi_rfk_check_hwblock_state()) {
1361 status
= TPACPI_RFK_RADIO_OFF
;
1363 status
= tpacpi_rfk_update_swstate(
1364 tpacpi_rfkill_switches
[id
]);
1369 seq_printf(m
, "status:\t\t%s\n",
1370 (status
== TPACPI_RFK_RADIO_ON
) ?
1371 "enabled" : "disabled");
1372 seq_printf(m
, "commands:\tenable, disable\n");
1378 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id
, char *buf
)
1384 if (id
>= TPACPI_RFK_SW_MAX
)
1387 while ((cmd
= next_cmd(&buf
))) {
1388 if (strlencmp(cmd
, "enable") == 0)
1389 status
= TPACPI_RFK_RADIO_ON
;
1390 else if (strlencmp(cmd
, "disable") == 0)
1391 status
= TPACPI_RFK_RADIO_OFF
;
1397 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1398 (status
== TPACPI_RFK_RADIO_ON
) ?
1399 "enable" : "disable",
1400 tpacpi_rfkill_names
[id
]);
1401 res
= (tpacpi_rfkill_switches
[id
]->ops
->set_status
)(status
);
1402 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[id
]);
1408 /*************************************************************************
1409 * thinkpad-acpi driver attributes
1412 /* interface_version --------------------------------------------------- */
1413 static ssize_t
tpacpi_driver_interface_version_show(
1414 struct device_driver
*drv
,
1417 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", TPACPI_SYSFS_VERSION
);
1420 static DRIVER_ATTR(interface_version
, S_IRUGO
,
1421 tpacpi_driver_interface_version_show
, NULL
);
1423 /* debug_level --------------------------------------------------------- */
1424 static ssize_t
tpacpi_driver_debug_show(struct device_driver
*drv
,
1427 return snprintf(buf
, PAGE_SIZE
, "0x%04x\n", dbg_level
);
1430 static ssize_t
tpacpi_driver_debug_store(struct device_driver
*drv
,
1431 const char *buf
, size_t count
)
1435 if (parse_strtoul(buf
, 0xffff, &t
))
1443 static DRIVER_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
1444 tpacpi_driver_debug_show
, tpacpi_driver_debug_store
);
1446 /* version ------------------------------------------------------------- */
1447 static ssize_t
tpacpi_driver_version_show(struct device_driver
*drv
,
1450 return snprintf(buf
, PAGE_SIZE
, "%s v%s\n",
1451 TPACPI_DESC
, TPACPI_VERSION
);
1454 static DRIVER_ATTR(version
, S_IRUGO
,
1455 tpacpi_driver_version_show
, NULL
);
1457 /* --------------------------------------------------------------------- */
1459 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1461 /* wlsw_emulstate ------------------------------------------------------ */
1462 static ssize_t
tpacpi_driver_wlsw_emulstate_show(struct device_driver
*drv
,
1465 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_wlsw_emulstate
);
1468 static ssize_t
tpacpi_driver_wlsw_emulstate_store(struct device_driver
*drv
,
1469 const char *buf
, size_t count
)
1473 if (parse_strtoul(buf
, 1, &t
))
1476 if (tpacpi_wlsw_emulstate
!= !!t
) {
1477 tpacpi_wlsw_emulstate
= !!t
;
1478 tpacpi_rfk_update_hwblock_state(!t
); /* negative logic */
1484 static DRIVER_ATTR(wlsw_emulstate
, S_IWUSR
| S_IRUGO
,
1485 tpacpi_driver_wlsw_emulstate_show
,
1486 tpacpi_driver_wlsw_emulstate_store
);
1488 /* bluetooth_emulstate ------------------------------------------------- */
1489 static ssize_t
tpacpi_driver_bluetooth_emulstate_show(
1490 struct device_driver
*drv
,
1493 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_bluetooth_emulstate
);
1496 static ssize_t
tpacpi_driver_bluetooth_emulstate_store(
1497 struct device_driver
*drv
,
1498 const char *buf
, size_t count
)
1502 if (parse_strtoul(buf
, 1, &t
))
1505 tpacpi_bluetooth_emulstate
= !!t
;
1510 static DRIVER_ATTR(bluetooth_emulstate
, S_IWUSR
| S_IRUGO
,
1511 tpacpi_driver_bluetooth_emulstate_show
,
1512 tpacpi_driver_bluetooth_emulstate_store
);
1514 /* wwan_emulstate ------------------------------------------------- */
1515 static ssize_t
tpacpi_driver_wwan_emulstate_show(
1516 struct device_driver
*drv
,
1519 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_wwan_emulstate
);
1522 static ssize_t
tpacpi_driver_wwan_emulstate_store(
1523 struct device_driver
*drv
,
1524 const char *buf
, size_t count
)
1528 if (parse_strtoul(buf
, 1, &t
))
1531 tpacpi_wwan_emulstate
= !!t
;
1536 static DRIVER_ATTR(wwan_emulstate
, S_IWUSR
| S_IRUGO
,
1537 tpacpi_driver_wwan_emulstate_show
,
1538 tpacpi_driver_wwan_emulstate_store
);
1540 /* uwb_emulstate ------------------------------------------------- */
1541 static ssize_t
tpacpi_driver_uwb_emulstate_show(
1542 struct device_driver
*drv
,
1545 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_uwb_emulstate
);
1548 static ssize_t
tpacpi_driver_uwb_emulstate_store(
1549 struct device_driver
*drv
,
1550 const char *buf
, size_t count
)
1554 if (parse_strtoul(buf
, 1, &t
))
1557 tpacpi_uwb_emulstate
= !!t
;
1562 static DRIVER_ATTR(uwb_emulstate
, S_IWUSR
| S_IRUGO
,
1563 tpacpi_driver_uwb_emulstate_show
,
1564 tpacpi_driver_uwb_emulstate_store
);
1567 /* --------------------------------------------------------------------- */
1569 static struct driver_attribute
*tpacpi_driver_attributes
[] = {
1570 &driver_attr_debug_level
, &driver_attr_version
,
1571 &driver_attr_interface_version
,
1574 static int __init
tpacpi_create_driver_attributes(struct device_driver
*drv
)
1580 while (!res
&& i
< ARRAY_SIZE(tpacpi_driver_attributes
)) {
1581 res
= driver_create_file(drv
, tpacpi_driver_attributes
[i
]);
1585 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1586 if (!res
&& dbg_wlswemul
)
1587 res
= driver_create_file(drv
, &driver_attr_wlsw_emulstate
);
1588 if (!res
&& dbg_bluetoothemul
)
1589 res
= driver_create_file(drv
, &driver_attr_bluetooth_emulstate
);
1590 if (!res
&& dbg_wwanemul
)
1591 res
= driver_create_file(drv
, &driver_attr_wwan_emulstate
);
1592 if (!res
&& dbg_uwbemul
)
1593 res
= driver_create_file(drv
, &driver_attr_uwb_emulstate
);
1599 static void tpacpi_remove_driver_attributes(struct device_driver
*drv
)
1603 for (i
= 0; i
< ARRAY_SIZE(tpacpi_driver_attributes
); i
++)
1604 driver_remove_file(drv
, tpacpi_driver_attributes
[i
]);
1606 #ifdef THINKPAD_ACPI_DEBUGFACILITIES
1607 driver_remove_file(drv
, &driver_attr_wlsw_emulstate
);
1608 driver_remove_file(drv
, &driver_attr_bluetooth_emulstate
);
1609 driver_remove_file(drv
, &driver_attr_wwan_emulstate
);
1610 driver_remove_file(drv
, &driver_attr_uwb_emulstate
);
1614 /*************************************************************************
1619 * Table of recommended minimum BIOS versions
1621 * Reasons for listing:
1622 * 1. Stable BIOS, listed because the unknown amount of
1623 * bugs and bad ACPI behaviour on older versions
1625 * 2. BIOS or EC fw with known bugs that trigger on Linux
1627 * 3. BIOS with known reduced functionality in older versions
1629 * We recommend the latest BIOS and EC version.
1630 * We only support the latest BIOS and EC fw version as a rule.
1632 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1633 * Information from users in ThinkWiki
1635 * WARNING: we use this table also to detect that the machine is
1636 * a ThinkPad in some cases, so don't remove entries lightly.
1639 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1640 { .vendor = (__v), \
1641 .bios = TPID(__id1, __id2), \
1642 .ec = TPACPI_MATCH_ANY, \
1643 .quirks = TPACPI_MATCH_ANY << 16 \
1644 | (__bv1) << 8 | (__bv2) }
1646 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
1647 __eid, __ev1, __ev2) \
1648 { .vendor = (__v), \
1649 .bios = TPID(__bid1, __bid2), \
1651 .quirks = (__ev1) << 24 | (__ev2) << 16 \
1652 | (__bv1) << 8 | (__bv2) }
1654 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1655 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1657 /* Outdated IBM BIOSes often lack the EC id string */
1658 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1659 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1660 __bv1, __bv2, TPID(__id1, __id2), \
1662 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1663 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1666 /* Outdated IBM BIOSes often lack the EC id string */
1667 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1668 __eid1, __eid2, __ev1, __ev2) \
1669 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1670 __bv1, __bv2, TPID(__eid1, __eid2), \
1672 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1673 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1676 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1677 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1679 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1680 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
1681 __bv1, __bv2, TPID(__id1, __id2), \
1684 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1685 __eid1, __eid2, __ev1, __ev2) \
1686 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
1687 __bv1, __bv2, TPID(__eid1, __eid2), \
1690 static const struct tpacpi_quirk tpacpi_bios_version_qtable
[] __initconst
= {
1691 /* Numeric models ------------------ */
1692 /* FW MODEL BIOS VERS */
1693 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1694 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1695 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1696 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1697 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1698 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1699 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1700 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1701 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1703 /* A-series ------------------------- */
1704 /* FW MODEL BIOS VERS EC VERS */
1705 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1706 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1707 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1708 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1709 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1710 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1711 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1712 TPV_QI0('1', '3', '2', '0'), /* A22m */
1713 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1714 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1715 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1717 /* G-series ------------------------- */
1718 /* FW MODEL BIOS VERS */
1719 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1720 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1722 /* R-series, T-series --------------- */
1723 /* FW MODEL BIOS VERS EC VERS */
1724 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1725 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1726 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1727 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1728 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1729 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1730 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1731 T40/p, T41/p, T42/p (1) */
1732 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1733 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1734 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1735 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1737 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1738 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1739 TPV_QI0('1', '6', '3', '2'), /* T22 */
1740 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1741 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1742 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1744 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1745 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
1746 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
1748 /* BIOS FW BIOS VERS EC FW EC VERS */
1749 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1750 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1752 /* X-series ------------------------- */
1753 /* FW MODEL BIOS VERS EC VERS */
1754 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1755 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1756 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1757 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1758 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1759 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1760 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1762 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1763 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
1765 /* (0) - older versions lack DMI EC fw string and functionality */
1766 /* (1) - older versions known to lack functionality */
1777 static void __init
tpacpi_check_outdated_fw(void)
1779 unsigned long fwvers
;
1780 u16 ec_version
, bios_version
;
1782 fwvers
= tpacpi_check_quirks(tpacpi_bios_version_qtable
,
1783 ARRAY_SIZE(tpacpi_bios_version_qtable
));
1788 bios_version
= fwvers
& 0xffffU
;
1789 ec_version
= (fwvers
>> 16) & 0xffffU
;
1791 /* note that unknown versions are set to 0x0000 and we use that */
1792 if ((bios_version
> thinkpad_id
.bios_release
) ||
1793 (ec_version
> thinkpad_id
.ec_release
&&
1794 ec_version
!= TPACPI_MATCH_ANY
)) {
1796 * The changelogs would let us track down the exact
1797 * reason, but it is just too much of a pain to track
1798 * it. We only list BIOSes that are either really
1799 * broken, or really stable to begin with, so it is
1800 * best if the user upgrades the firmware anyway.
1803 "WARNING: Outdated ThinkPad BIOS/EC firmware\n");
1805 "WARNING: This firmware may be missing critical bug "
1806 "fixes and/or important features\n");
1810 static bool __init
tpacpi_is_fw_known(void)
1812 return tpacpi_check_quirks(tpacpi_bios_version_qtable
,
1813 ARRAY_SIZE(tpacpi_bios_version_qtable
)) != 0;
1816 /****************************************************************************
1817 ****************************************************************************
1821 ****************************************************************************
1822 ****************************************************************************/
1824 /*************************************************************************
1825 * thinkpad-acpi metadata subdriver
1828 static int thinkpad_acpi_driver_read(struct seq_file
*m
)
1830 seq_printf(m
, "driver:\t\t%s\n", TPACPI_DESC
);
1831 seq_printf(m
, "version:\t%s\n", TPACPI_VERSION
);
1835 static struct ibm_struct thinkpad_acpi_driver_data
= {
1837 .read
= thinkpad_acpi_driver_read
,
1840 /*************************************************************************
1845 * ThinkPad firmware event model
1847 * The ThinkPad firmware has two main event interfaces: normal ACPI
1848 * notifications (which follow the ACPI standard), and a private event
1851 * The private event interface also issues events for the hotkeys. As
1852 * the driver gained features, the event handling code ended up being
1853 * built around the hotkey subdriver. This will need to be refactored
1854 * to a more formal event API eventually.
1856 * Some "hotkeys" are actually supposed to be used as event reports,
1857 * such as "brightness has changed", "volume has changed", depending on
1858 * the ThinkPad model and how the firmware is operating.
1860 * Unlike other classes, hotkey-class events have mask/unmask control on
1861 * non-ancient firmware. However, how it behaves changes a lot with the
1862 * firmware model and version.
1865 enum { /* hot key scan codes (derived from ACPI DSDT) */
1866 TP_ACPI_HOTKEYSCAN_FNF1
= 0,
1867 TP_ACPI_HOTKEYSCAN_FNF2
,
1868 TP_ACPI_HOTKEYSCAN_FNF3
,
1869 TP_ACPI_HOTKEYSCAN_FNF4
,
1870 TP_ACPI_HOTKEYSCAN_FNF5
,
1871 TP_ACPI_HOTKEYSCAN_FNF6
,
1872 TP_ACPI_HOTKEYSCAN_FNF7
,
1873 TP_ACPI_HOTKEYSCAN_FNF8
,
1874 TP_ACPI_HOTKEYSCAN_FNF9
,
1875 TP_ACPI_HOTKEYSCAN_FNF10
,
1876 TP_ACPI_HOTKEYSCAN_FNF11
,
1877 TP_ACPI_HOTKEYSCAN_FNF12
,
1878 TP_ACPI_HOTKEYSCAN_FNBACKSPACE
,
1879 TP_ACPI_HOTKEYSCAN_FNINSERT
,
1880 TP_ACPI_HOTKEYSCAN_FNDELETE
,
1881 TP_ACPI_HOTKEYSCAN_FNHOME
,
1882 TP_ACPI_HOTKEYSCAN_FNEND
,
1883 TP_ACPI_HOTKEYSCAN_FNPAGEUP
,
1884 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN
,
1885 TP_ACPI_HOTKEYSCAN_FNSPACE
,
1886 TP_ACPI_HOTKEYSCAN_VOLUMEUP
,
1887 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
,
1888 TP_ACPI_HOTKEYSCAN_MUTE
,
1889 TP_ACPI_HOTKEYSCAN_THINKPAD
,
1892 enum { /* Keys/events available through NVRAM polling */
1893 TPACPI_HKEY_NVRAM_KNOWN_MASK
= 0x00fb88c0U
,
1894 TPACPI_HKEY_NVRAM_GOOD_MASK
= 0x00fb8000U
,
1897 enum { /* Positions of some of the keys in hotkey masks */
1898 TP_ACPI_HKEY_DISPSWTCH_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF7
,
1899 TP_ACPI_HKEY_DISPXPAND_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF8
,
1900 TP_ACPI_HKEY_HIBERNATE_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF12
,
1901 TP_ACPI_HKEY_BRGHTUP_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNHOME
,
1902 TP_ACPI_HKEY_BRGHTDWN_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNEND
,
1903 TP_ACPI_HKEY_THNKLGHT_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP
,
1904 TP_ACPI_HKEY_ZOOM_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNSPACE
,
1905 TP_ACPI_HKEY_VOLUP_MASK
= 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP
,
1906 TP_ACPI_HKEY_VOLDWN_MASK
= 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
,
1907 TP_ACPI_HKEY_MUTE_MASK
= 1 << TP_ACPI_HOTKEYSCAN_MUTE
,
1908 TP_ACPI_HKEY_THINKPAD_MASK
= 1 << TP_ACPI_HOTKEYSCAN_THINKPAD
,
1911 enum { /* NVRAM to ACPI HKEY group map */
1912 TP_NVRAM_HKEY_GROUP_HK2
= TP_ACPI_HKEY_THINKPAD_MASK
|
1913 TP_ACPI_HKEY_ZOOM_MASK
|
1914 TP_ACPI_HKEY_DISPSWTCH_MASK
|
1915 TP_ACPI_HKEY_HIBERNATE_MASK
,
1916 TP_NVRAM_HKEY_GROUP_BRIGHTNESS
= TP_ACPI_HKEY_BRGHTUP_MASK
|
1917 TP_ACPI_HKEY_BRGHTDWN_MASK
,
1918 TP_NVRAM_HKEY_GROUP_VOLUME
= TP_ACPI_HKEY_VOLUP_MASK
|
1919 TP_ACPI_HKEY_VOLDWN_MASK
|
1920 TP_ACPI_HKEY_MUTE_MASK
,
1923 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1924 struct tp_nvram_state
{
1925 u16 thinkpad_toggle
:1;
1927 u16 display_toggle
:1;
1928 u16 thinklight_toggle
:1;
1929 u16 hibernate_toggle
:1;
1930 u16 displayexp_toggle
:1;
1931 u16 display_state
:1;
1932 u16 brightness_toggle
:1;
1933 u16 volume_toggle
:1;
1936 u8 brightness_level
;
1940 /* kthread for the hotkey poller */
1941 static struct task_struct
*tpacpi_hotkey_task
;
1943 /* Acquired while the poller kthread is running, use to sync start/stop */
1944 static struct mutex hotkey_thread_mutex
;
1947 * Acquire mutex to write poller control variables as an
1950 * Increment hotkey_config_change when changing them if you
1951 * want the kthread to forget old state.
1953 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1955 static struct mutex hotkey_thread_data_mutex
;
1956 static unsigned int hotkey_config_change
;
1959 * hotkey poller control variables
1961 * Must be atomic or readers will also need to acquire mutex
1963 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1964 * should be used only when the changes need to be taken as
1965 * a block, OR when one needs to force the kthread to forget
1968 static u32 hotkey_source_mask
; /* bit mask 0=ACPI,1=NVRAM */
1969 static unsigned int hotkey_poll_freq
= 10; /* Hz */
1971 #define HOTKEY_CONFIG_CRITICAL_START \
1973 mutex_lock(&hotkey_thread_data_mutex); \
1974 hotkey_config_change++; \
1976 #define HOTKEY_CONFIG_CRITICAL_END \
1977 mutex_unlock(&hotkey_thread_data_mutex);
1979 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1981 #define hotkey_source_mask 0U
1982 #define HOTKEY_CONFIG_CRITICAL_START
1983 #define HOTKEY_CONFIG_CRITICAL_END
1985 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1987 static struct mutex hotkey_mutex
;
1989 static enum { /* Reasons for waking up */
1990 TP_ACPI_WAKEUP_NONE
= 0, /* None or unknown */
1991 TP_ACPI_WAKEUP_BAYEJ
, /* Bay ejection request */
1992 TP_ACPI_WAKEUP_UNDOCK
, /* Undock request */
1993 } hotkey_wakeup_reason
;
1995 static int hotkey_autosleep_ack
;
1997 static u32 hotkey_orig_mask
; /* events the BIOS had enabled */
1998 static u32 hotkey_all_mask
; /* all events supported in fw */
1999 static u32 hotkey_reserved_mask
; /* events better left disabled */
2000 static u32 hotkey_driver_mask
; /* events needed by the driver */
2001 static u32 hotkey_user_mask
; /* events visible to userspace */
2002 static u32 hotkey_acpi_mask
; /* events enabled in firmware */
2004 static unsigned int hotkey_report_mode
;
2006 static u16
*hotkey_keycode_map
;
2008 static struct attribute_set
*hotkey_dev_attributes
;
2010 static void tpacpi_driver_event(const unsigned int hkey_event
);
2011 static void hotkey_driver_event(const unsigned int scancode
);
2012 static void hotkey_poll_setup(const bool may_warn
);
2014 /* HKEY.MHKG() return bits */
2015 #define TP_HOTKEY_TABLET_MASK (1 << 3)
2017 static int hotkey_get_wlsw(void)
2021 if (!tp_features
.hotkey_wlsw
)
2024 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
2026 return (tpacpi_wlsw_emulstate
) ?
2027 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
2030 if (!acpi_evalf(hkey_handle
, &status
, "WLSW", "d"))
2033 return (status
) ? TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
2036 static int hotkey_get_tablet_mode(int *status
)
2040 if (!acpi_evalf(hkey_handle
, &s
, "MHKG", "d"))
2043 *status
= ((s
& TP_HOTKEY_TABLET_MASK
) != 0);
2048 * Reads current event mask from firmware, and updates
2049 * hotkey_acpi_mask accordingly. Also resets any bits
2050 * from hotkey_user_mask that are unavailable to be
2051 * delivered (shadow requirement of the userspace ABI).
2053 * Call with hotkey_mutex held
2055 static int hotkey_mask_get(void)
2057 if (tp_features
.hotkey_mask
) {
2060 if (!acpi_evalf(hkey_handle
, &m
, "DHKN", "d"))
2063 hotkey_acpi_mask
= m
;
2065 /* no mask support doesn't mean no event support... */
2066 hotkey_acpi_mask
= hotkey_all_mask
;
2069 /* sync userspace-visible mask */
2070 hotkey_user_mask
&= (hotkey_acpi_mask
| hotkey_source_mask
);
2075 void static hotkey_mask_warn_incomplete_mask(void)
2077 /* log only what the user can fix... */
2078 const u32 wantedmask
= hotkey_driver_mask
&
2079 ~(hotkey_acpi_mask
| hotkey_source_mask
) &
2080 (hotkey_all_mask
| TPACPI_HKEY_NVRAM_KNOWN_MASK
);
2083 printk(TPACPI_NOTICE
2084 "required events 0x%08x not enabled!\n",
2089 * Set the firmware mask when supported
2091 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
2093 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
2095 * Call with hotkey_mutex held
2097 static int hotkey_mask_set(u32 mask
)
2102 const u32 fwmask
= mask
& ~hotkey_source_mask
;
2104 if (tp_features
.hotkey_mask
) {
2105 for (i
= 0; i
< 32; i
++) {
2106 if (!acpi_evalf(hkey_handle
,
2107 NULL
, "MHKM", "vdd", i
+ 1,
2108 !!(mask
& (1 << i
)))) {
2116 * We *must* make an inconditional call to hotkey_mask_get to
2117 * refresh hotkey_acpi_mask and update hotkey_user_mask
2119 * Take the opportunity to also log when we cannot _enable_
2122 if (!hotkey_mask_get() && !rc
&& (fwmask
& ~hotkey_acpi_mask
)) {
2123 printk(TPACPI_NOTICE
2124 "asked for hotkey mask 0x%08x, but "
2125 "firmware forced it to 0x%08x\n",
2126 fwmask
, hotkey_acpi_mask
);
2129 if (tpacpi_lifecycle
!= TPACPI_LIFE_EXITING
)
2130 hotkey_mask_warn_incomplete_mask();
2136 * Sets hotkey_user_mask and tries to set the firmware mask
2138 * Call with hotkey_mutex held
2140 static int hotkey_user_mask_set(const u32 mask
)
2144 /* Give people a chance to notice they are doing something that
2145 * is bound to go boom on their users sooner or later */
2146 if (!tp_warned
.hotkey_mask_ff
&&
2147 (mask
== 0xffff || mask
== 0xffffff ||
2148 mask
== 0xffffffff)) {
2149 tp_warned
.hotkey_mask_ff
= 1;
2150 printk(TPACPI_NOTICE
2151 "setting the hotkey mask to 0x%08x is likely "
2152 "not the best way to go about it\n", mask
);
2153 printk(TPACPI_NOTICE
2154 "please consider using the driver defaults, "
2155 "and refer to up-to-date thinkpad-acpi "
2159 /* Try to enable what the user asked for, plus whatever we need.
2160 * this syncs everything but won't enable bits in hotkey_user_mask */
2161 rc
= hotkey_mask_set((mask
| hotkey_driver_mask
) & ~hotkey_source_mask
);
2163 /* Enable the available bits in hotkey_user_mask */
2164 hotkey_user_mask
= mask
& (hotkey_acpi_mask
| hotkey_source_mask
);
2170 * Sets the driver hotkey mask.
2172 * Can be called even if the hotkey subdriver is inactive
2174 static int tpacpi_hotkey_driver_mask_set(const u32 mask
)
2178 /* Do the right thing if hotkey_init has not been called yet */
2179 if (!tp_features
.hotkey
) {
2180 hotkey_driver_mask
= mask
;
2184 mutex_lock(&hotkey_mutex
);
2186 HOTKEY_CONFIG_CRITICAL_START
2187 hotkey_driver_mask
= mask
;
2188 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2189 hotkey_source_mask
|= (mask
& ~hotkey_all_mask
);
2191 HOTKEY_CONFIG_CRITICAL_END
2193 rc
= hotkey_mask_set((hotkey_acpi_mask
| hotkey_driver_mask
) &
2194 ~hotkey_source_mask
);
2195 hotkey_poll_setup(true);
2197 mutex_unlock(&hotkey_mutex
);
2202 static int hotkey_status_get(int *status
)
2204 if (!acpi_evalf(hkey_handle
, status
, "DHKC", "d"))
2210 static int hotkey_status_set(bool enable
)
2212 if (!acpi_evalf(hkey_handle
, NULL
, "MHKC", "vd", enable
? 1 : 0))
2218 static void tpacpi_input_send_tabletsw(void)
2222 if (tp_features
.hotkey_tablet
&&
2223 !hotkey_get_tablet_mode(&state
)) {
2224 mutex_lock(&tpacpi_inputdev_send_mutex
);
2226 input_report_switch(tpacpi_inputdev
,
2227 SW_TABLET_MODE
, !!state
);
2228 input_sync(tpacpi_inputdev
);
2230 mutex_unlock(&tpacpi_inputdev_send_mutex
);
2234 /* Do NOT call without validating scancode first */
2235 static void tpacpi_input_send_key(const unsigned int scancode
)
2237 const unsigned int keycode
= hotkey_keycode_map
[scancode
];
2239 if (keycode
!= KEY_RESERVED
) {
2240 mutex_lock(&tpacpi_inputdev_send_mutex
);
2242 input_report_key(tpacpi_inputdev
, keycode
, 1);
2243 if (keycode
== KEY_UNKNOWN
)
2244 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
,
2246 input_sync(tpacpi_inputdev
);
2248 input_report_key(tpacpi_inputdev
, keycode
, 0);
2249 if (keycode
== KEY_UNKNOWN
)
2250 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
,
2252 input_sync(tpacpi_inputdev
);
2254 mutex_unlock(&tpacpi_inputdev_send_mutex
);
2258 /* Do NOT call without validating scancode first */
2259 static void tpacpi_input_send_key_masked(const unsigned int scancode
)
2261 hotkey_driver_event(scancode
);
2262 if (hotkey_user_mask
& (1 << scancode
))
2263 tpacpi_input_send_key(scancode
);
2266 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2267 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
;
2269 /* Do NOT call without validating scancode first */
2270 static void tpacpi_hotkey_send_key(unsigned int scancode
)
2272 tpacpi_input_send_key_masked(scancode
);
2273 if (hotkey_report_mode
< 2) {
2274 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver
.device
,
2275 0x80, TP_HKEY_EV_HOTKEY_BASE
+ scancode
);
2279 static void hotkey_read_nvram(struct tp_nvram_state
*n
, const u32 m
)
2283 if (m
& TP_NVRAM_HKEY_GROUP_HK2
) {
2284 d
= nvram_read_byte(TP_NVRAM_ADDR_HK2
);
2285 n
->thinkpad_toggle
= !!(d
& TP_NVRAM_MASK_HKT_THINKPAD
);
2286 n
->zoom_toggle
= !!(d
& TP_NVRAM_MASK_HKT_ZOOM
);
2287 n
->display_toggle
= !!(d
& TP_NVRAM_MASK_HKT_DISPLAY
);
2288 n
->hibernate_toggle
= !!(d
& TP_NVRAM_MASK_HKT_HIBERNATE
);
2290 if (m
& TP_ACPI_HKEY_THNKLGHT_MASK
) {
2291 d
= nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT
);
2292 n
->thinklight_toggle
= !!(d
& TP_NVRAM_MASK_THINKLIGHT
);
2294 if (m
& TP_ACPI_HKEY_DISPXPAND_MASK
) {
2295 d
= nvram_read_byte(TP_NVRAM_ADDR_VIDEO
);
2296 n
->displayexp_toggle
=
2297 !!(d
& TP_NVRAM_MASK_HKT_DISPEXPND
);
2299 if (m
& TP_NVRAM_HKEY_GROUP_BRIGHTNESS
) {
2300 d
= nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
);
2301 n
->brightness_level
= (d
& TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
2302 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
2303 n
->brightness_toggle
=
2304 !!(d
& TP_NVRAM_MASK_HKT_BRIGHTNESS
);
2306 if (m
& TP_NVRAM_HKEY_GROUP_VOLUME
) {
2307 d
= nvram_read_byte(TP_NVRAM_ADDR_MIXER
);
2308 n
->volume_level
= (d
& TP_NVRAM_MASK_LEVEL_VOLUME
)
2309 >> TP_NVRAM_POS_LEVEL_VOLUME
;
2310 n
->mute
= !!(d
& TP_NVRAM_MASK_MUTE
);
2311 n
->volume_toggle
= !!(d
& TP_NVRAM_MASK_HKT_VOLUME
);
2315 static void hotkey_compare_and_issue_event(struct tp_nvram_state
*oldn
,
2316 struct tp_nvram_state
*newn
,
2317 const u32 event_mask
)
2320 #define TPACPI_COMPARE_KEY(__scancode, __member) \
2322 if ((event_mask & (1 << __scancode)) && \
2323 oldn->__member != newn->__member) \
2324 tpacpi_hotkey_send_key(__scancode); \
2327 #define TPACPI_MAY_SEND_KEY(__scancode) \
2329 if (event_mask & (1 << __scancode)) \
2330 tpacpi_hotkey_send_key(__scancode); \
2333 void issue_volchange(const unsigned int oldvol
,
2334 const unsigned int newvol
)
2336 unsigned int i
= oldvol
;
2338 while (i
> newvol
) {
2339 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
2342 while (i
< newvol
) {
2343 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
2348 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD
, thinkpad_toggle
);
2349 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE
, zoom_toggle
);
2350 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7
, display_toggle
);
2351 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12
, hibernate_toggle
);
2353 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP
, thinklight_toggle
);
2355 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8
, displayexp_toggle
);
2360 * This code is supposed to duplicate the IBM firmware behaviour:
2361 * - Pressing MUTE issues mute hotkey message, even when already mute
2362 * - Pressing Volume up/down issues volume up/down hotkey messages,
2363 * even when already at maximum or minumum volume
2364 * - The act of unmuting issues volume up/down notification,
2365 * depending which key was used to unmute
2367 * We are constrained to what the NVRAM can tell us, which is not much
2368 * and certainly not enough if more than one volume hotkey was pressed
2369 * since the last poll cycle.
2371 * Just to make our life interesting, some newer Lenovo ThinkPads have
2372 * bugs in the BIOS and may fail to update volume_toggle properly.
2377 oldn
->volume_toggle
!= newn
->volume_toggle
||
2378 oldn
->volume_level
!= newn
->volume_level
) {
2379 /* recently muted, or repeated mute keypress, or
2380 * multiple presses ending in mute */
2381 issue_volchange(oldn
->volume_level
, newn
->volume_level
);
2382 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE
);
2387 /* recently unmuted, issue 'unmute' keypress */
2388 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
2390 if (oldn
->volume_level
!= newn
->volume_level
) {
2391 issue_volchange(oldn
->volume_level
, newn
->volume_level
);
2392 } else if (oldn
->volume_toggle
!= newn
->volume_toggle
) {
2393 /* repeated vol up/down keypress at end of scale ? */
2394 if (newn
->volume_level
== 0)
2395 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
2396 else if (newn
->volume_level
>= TP_NVRAM_LEVEL_VOLUME_MAX
)
2397 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
2401 /* handle brightness */
2402 if (oldn
->brightness_toggle
!= newn
->brightness_toggle
) {
2403 if (oldn
->brightness_level
< newn
->brightness_level
) {
2404 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
2405 } else if (oldn
->brightness_level
> newn
->brightness_level
) {
2406 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
2408 /* repeated key presses that didn't change state */
2409 if (newn
->brightness_level
!= 0) {
2410 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
2412 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
2417 #undef TPACPI_COMPARE_KEY
2418 #undef TPACPI_MAY_SEND_KEY
2424 * We track all events in hotkey_source_mask all the time, since
2425 * most of them are edge-based. We only issue those requested by
2426 * hotkey_user_mask or hotkey_driver_mask, though.
2428 static int hotkey_kthread(void *data
)
2430 struct tp_nvram_state s
[2];
2431 u32 poll_mask
, event_mask
;
2432 unsigned int si
, so
;
2434 unsigned int change_detector
, must_reset
;
2435 unsigned int poll_freq
;
2437 mutex_lock(&hotkey_thread_mutex
);
2439 if (tpacpi_lifecycle
== TPACPI_LIFE_EXITING
)
2448 /* Initial state for compares */
2449 mutex_lock(&hotkey_thread_data_mutex
);
2450 change_detector
= hotkey_config_change
;
2451 poll_mask
= hotkey_source_mask
;
2452 event_mask
= hotkey_source_mask
&
2453 (hotkey_driver_mask
| hotkey_user_mask
);
2454 poll_freq
= hotkey_poll_freq
;
2455 mutex_unlock(&hotkey_thread_data_mutex
);
2456 hotkey_read_nvram(&s
[so
], poll_mask
);
2458 while (!kthread_should_stop()) {
2460 if (likely(poll_freq
))
2463 t
= 100; /* should never happen... */
2465 t
= msleep_interruptible(t
);
2466 if (unlikely(kthread_should_stop()))
2468 must_reset
= try_to_freeze();
2469 if (t
> 0 && !must_reset
)
2472 mutex_lock(&hotkey_thread_data_mutex
);
2473 if (must_reset
|| hotkey_config_change
!= change_detector
) {
2474 /* forget old state on thaw or config change */
2477 change_detector
= hotkey_config_change
;
2479 poll_mask
= hotkey_source_mask
;
2480 event_mask
= hotkey_source_mask
&
2481 (hotkey_driver_mask
| hotkey_user_mask
);
2482 poll_freq
= hotkey_poll_freq
;
2483 mutex_unlock(&hotkey_thread_data_mutex
);
2485 if (likely(poll_mask
)) {
2486 hotkey_read_nvram(&s
[si
], poll_mask
);
2487 if (likely(si
!= so
)) {
2488 hotkey_compare_and_issue_event(&s
[so
], &s
[si
],
2498 mutex_unlock(&hotkey_thread_mutex
);
2502 /* call with hotkey_mutex held */
2503 static void hotkey_poll_stop_sync(void)
2505 if (tpacpi_hotkey_task
) {
2506 if (frozen(tpacpi_hotkey_task
) ||
2507 freezing(tpacpi_hotkey_task
))
2508 thaw_process(tpacpi_hotkey_task
);
2510 kthread_stop(tpacpi_hotkey_task
);
2511 tpacpi_hotkey_task
= NULL
;
2512 mutex_lock(&hotkey_thread_mutex
);
2513 /* at this point, the thread did exit */
2514 mutex_unlock(&hotkey_thread_mutex
);
2518 /* call with hotkey_mutex held */
2519 static void hotkey_poll_setup(const bool may_warn
)
2521 const u32 poll_driver_mask
= hotkey_driver_mask
& hotkey_source_mask
;
2522 const u32 poll_user_mask
= hotkey_user_mask
& hotkey_source_mask
;
2524 if (hotkey_poll_freq
> 0 &&
2525 (poll_driver_mask
||
2526 (poll_user_mask
&& tpacpi_inputdev
->users
> 0))) {
2527 if (!tpacpi_hotkey_task
) {
2528 tpacpi_hotkey_task
= kthread_run(hotkey_kthread
,
2529 NULL
, TPACPI_NVRAM_KTHREAD_NAME
);
2530 if (IS_ERR(tpacpi_hotkey_task
)) {
2531 tpacpi_hotkey_task
= NULL
;
2533 "could not create kernel thread "
2534 "for hotkey polling\n");
2538 hotkey_poll_stop_sync();
2539 if (may_warn
&& (poll_driver_mask
|| poll_user_mask
) &&
2540 hotkey_poll_freq
== 0) {
2541 printk(TPACPI_NOTICE
2542 "hot keys 0x%08x and/or events 0x%08x "
2543 "require polling, which is currently "
2545 poll_user_mask
, poll_driver_mask
);
2550 static void hotkey_poll_setup_safe(const bool may_warn
)
2552 mutex_lock(&hotkey_mutex
);
2553 hotkey_poll_setup(may_warn
);
2554 mutex_unlock(&hotkey_mutex
);
2557 /* call with hotkey_mutex held */
2558 static void hotkey_poll_set_freq(unsigned int freq
)
2561 hotkey_poll_stop_sync();
2563 hotkey_poll_freq
= freq
;
2566 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2568 static void hotkey_poll_setup(const bool __unused
)
2572 static void hotkey_poll_setup_safe(const bool __unused
)
2576 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2578 static int hotkey_inputdev_open(struct input_dev
*dev
)
2580 switch (tpacpi_lifecycle
) {
2581 case TPACPI_LIFE_INIT
:
2582 case TPACPI_LIFE_RUNNING
:
2583 hotkey_poll_setup_safe(false);
2585 case TPACPI_LIFE_EXITING
:
2589 /* Should only happen if tpacpi_lifecycle is corrupt */
2594 static void hotkey_inputdev_close(struct input_dev
*dev
)
2596 /* disable hotkey polling when possible */
2597 if (tpacpi_lifecycle
!= TPACPI_LIFE_EXITING
&&
2598 !(hotkey_source_mask
& hotkey_driver_mask
))
2599 hotkey_poll_setup_safe(false);
2602 /* sysfs hotkey enable ------------------------------------------------- */
2603 static ssize_t
hotkey_enable_show(struct device
*dev
,
2604 struct device_attribute
*attr
,
2609 printk_deprecated_attribute("hotkey_enable",
2610 "Hotkey reporting is always enabled");
2612 res
= hotkey_status_get(&status
);
2616 return snprintf(buf
, PAGE_SIZE
, "%d\n", status
);
2619 static ssize_t
hotkey_enable_store(struct device
*dev
,
2620 struct device_attribute
*attr
,
2621 const char *buf
, size_t count
)
2625 printk_deprecated_attribute("hotkey_enable",
2626 "Hotkeys can be disabled through hotkey_mask");
2628 if (parse_strtoul(buf
, 1, &t
))
2637 static struct device_attribute dev_attr_hotkey_enable
=
2638 __ATTR(hotkey_enable
, S_IWUSR
| S_IRUGO
,
2639 hotkey_enable_show
, hotkey_enable_store
);
2641 /* sysfs hotkey mask --------------------------------------------------- */
2642 static ssize_t
hotkey_mask_show(struct device
*dev
,
2643 struct device_attribute
*attr
,
2646 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_user_mask
);
2649 static ssize_t
hotkey_mask_store(struct device
*dev
,
2650 struct device_attribute
*attr
,
2651 const char *buf
, size_t count
)
2656 if (parse_strtoul(buf
, 0xffffffffUL
, &t
))
2659 if (mutex_lock_killable(&hotkey_mutex
))
2660 return -ERESTARTSYS
;
2662 res
= hotkey_user_mask_set(t
);
2664 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2665 hotkey_poll_setup(true);
2668 mutex_unlock(&hotkey_mutex
);
2670 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t
);
2672 return (res
) ? res
: count
;
2675 static struct device_attribute dev_attr_hotkey_mask
=
2676 __ATTR(hotkey_mask
, S_IWUSR
| S_IRUGO
,
2677 hotkey_mask_show
, hotkey_mask_store
);
2679 /* sysfs hotkey bios_enabled ------------------------------------------- */
2680 static ssize_t
hotkey_bios_enabled_show(struct device
*dev
,
2681 struct device_attribute
*attr
,
2684 return sprintf(buf
, "0\n");
2687 static struct device_attribute dev_attr_hotkey_bios_enabled
=
2688 __ATTR(hotkey_bios_enabled
, S_IRUGO
, hotkey_bios_enabled_show
, NULL
);
2690 /* sysfs hotkey bios_mask ---------------------------------------------- */
2691 static ssize_t
hotkey_bios_mask_show(struct device
*dev
,
2692 struct device_attribute
*attr
,
2695 printk_deprecated_attribute("hotkey_bios_mask",
2696 "This attribute is useless.");
2697 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_orig_mask
);
2700 static struct device_attribute dev_attr_hotkey_bios_mask
=
2701 __ATTR(hotkey_bios_mask
, S_IRUGO
, hotkey_bios_mask_show
, NULL
);
2703 /* sysfs hotkey all_mask ----------------------------------------------- */
2704 static ssize_t
hotkey_all_mask_show(struct device
*dev
,
2705 struct device_attribute
*attr
,
2708 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
2709 hotkey_all_mask
| hotkey_source_mask
);
2712 static struct device_attribute dev_attr_hotkey_all_mask
=
2713 __ATTR(hotkey_all_mask
, S_IRUGO
, hotkey_all_mask_show
, NULL
);
2715 /* sysfs hotkey recommended_mask --------------------------------------- */
2716 static ssize_t
hotkey_recommended_mask_show(struct device
*dev
,
2717 struct device_attribute
*attr
,
2720 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
2721 (hotkey_all_mask
| hotkey_source_mask
)
2722 & ~hotkey_reserved_mask
);
2725 static struct device_attribute dev_attr_hotkey_recommended_mask
=
2726 __ATTR(hotkey_recommended_mask
, S_IRUGO
,
2727 hotkey_recommended_mask_show
, NULL
);
2729 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2731 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
2732 static ssize_t
hotkey_source_mask_show(struct device
*dev
,
2733 struct device_attribute
*attr
,
2736 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_source_mask
);
2739 static ssize_t
hotkey_source_mask_store(struct device
*dev
,
2740 struct device_attribute
*attr
,
2741 const char *buf
, size_t count
)
2747 if (parse_strtoul(buf
, 0xffffffffUL
, &t
) ||
2748 ((t
& ~TPACPI_HKEY_NVRAM_KNOWN_MASK
) != 0))
2751 if (mutex_lock_killable(&hotkey_mutex
))
2752 return -ERESTARTSYS
;
2754 HOTKEY_CONFIG_CRITICAL_START
2755 hotkey_source_mask
= t
;
2756 HOTKEY_CONFIG_CRITICAL_END
2758 rc
= hotkey_mask_set((hotkey_user_mask
| hotkey_driver_mask
) &
2759 ~hotkey_source_mask
);
2760 hotkey_poll_setup(true);
2762 /* check if events needed by the driver got disabled */
2763 r_ev
= hotkey_driver_mask
& ~(hotkey_acpi_mask
& hotkey_all_mask
)
2764 & ~hotkey_source_mask
& TPACPI_HKEY_NVRAM_KNOWN_MASK
;
2766 mutex_unlock(&hotkey_mutex
);
2769 printk(TPACPI_ERR
"hotkey_source_mask: failed to update the"
2770 "firmware event mask!\n");
2773 printk(TPACPI_NOTICE
"hotkey_source_mask: "
2774 "some important events were disabled: "
2777 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t
);
2779 return (rc
< 0) ? rc
: count
;
2782 static struct device_attribute dev_attr_hotkey_source_mask
=
2783 __ATTR(hotkey_source_mask
, S_IWUSR
| S_IRUGO
,
2784 hotkey_source_mask_show
, hotkey_source_mask_store
);
2786 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2787 static ssize_t
hotkey_poll_freq_show(struct device
*dev
,
2788 struct device_attribute
*attr
,
2791 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_poll_freq
);
2794 static ssize_t
hotkey_poll_freq_store(struct device
*dev
,
2795 struct device_attribute
*attr
,
2796 const char *buf
, size_t count
)
2800 if (parse_strtoul(buf
, 25, &t
))
2803 if (mutex_lock_killable(&hotkey_mutex
))
2804 return -ERESTARTSYS
;
2806 hotkey_poll_set_freq(t
);
2807 hotkey_poll_setup(true);
2809 mutex_unlock(&hotkey_mutex
);
2811 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t
);
2816 static struct device_attribute dev_attr_hotkey_poll_freq
=
2817 __ATTR(hotkey_poll_freq
, S_IWUSR
| S_IRUGO
,
2818 hotkey_poll_freq_show
, hotkey_poll_freq_store
);
2820 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2822 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
2823 static ssize_t
hotkey_radio_sw_show(struct device
*dev
,
2824 struct device_attribute
*attr
,
2828 res
= hotkey_get_wlsw();
2832 /* Opportunistic update */
2833 tpacpi_rfk_update_hwblock_state((res
== TPACPI_RFK_RADIO_OFF
));
2835 return snprintf(buf
, PAGE_SIZE
, "%d\n",
2836 (res
== TPACPI_RFK_RADIO_OFF
) ? 0 : 1);
2839 static struct device_attribute dev_attr_hotkey_radio_sw
=
2840 __ATTR(hotkey_radio_sw
, S_IRUGO
, hotkey_radio_sw_show
, NULL
);
2842 static void hotkey_radio_sw_notify_change(void)
2844 if (tp_features
.hotkey_wlsw
)
2845 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2849 /* sysfs hotkey tablet mode (pollable) --------------------------------- */
2850 static ssize_t
hotkey_tablet_mode_show(struct device
*dev
,
2851 struct device_attribute
*attr
,
2855 res
= hotkey_get_tablet_mode(&s
);
2859 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!s
);
2862 static struct device_attribute dev_attr_hotkey_tablet_mode
=
2863 __ATTR(hotkey_tablet_mode
, S_IRUGO
, hotkey_tablet_mode_show
, NULL
);
2865 static void hotkey_tablet_mode_notify_change(void)
2867 if (tp_features
.hotkey_tablet
)
2868 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2869 "hotkey_tablet_mode");
2872 /* sysfs hotkey report_mode -------------------------------------------- */
2873 static ssize_t
hotkey_report_mode_show(struct device
*dev
,
2874 struct device_attribute
*attr
,
2877 return snprintf(buf
, PAGE_SIZE
, "%d\n",
2878 (hotkey_report_mode
!= 0) ? hotkey_report_mode
: 1);
2881 static struct device_attribute dev_attr_hotkey_report_mode
=
2882 __ATTR(hotkey_report_mode
, S_IRUGO
, hotkey_report_mode_show
, NULL
);
2884 /* sysfs wakeup reason (pollable) -------------------------------------- */
2885 static ssize_t
hotkey_wakeup_reason_show(struct device
*dev
,
2886 struct device_attribute
*attr
,
2889 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_wakeup_reason
);
2892 static struct device_attribute dev_attr_hotkey_wakeup_reason
=
2893 __ATTR(wakeup_reason
, S_IRUGO
, hotkey_wakeup_reason_show
, NULL
);
2895 static void hotkey_wakeup_reason_notify_change(void)
2897 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2901 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
2902 static ssize_t
hotkey_wakeup_hotunplug_complete_show(struct device
*dev
,
2903 struct device_attribute
*attr
,
2906 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_autosleep_ack
);
2909 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete
=
2910 __ATTR(wakeup_hotunplug_complete
, S_IRUGO
,
2911 hotkey_wakeup_hotunplug_complete_show
, NULL
);
2913 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
2915 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2916 "wakeup_hotunplug_complete");
2919 /* --------------------------------------------------------------------- */
2921 static struct attribute
*hotkey_attributes
[] __initdata
= {
2922 &dev_attr_hotkey_enable
.attr
,
2923 &dev_attr_hotkey_bios_enabled
.attr
,
2924 &dev_attr_hotkey_bios_mask
.attr
,
2925 &dev_attr_hotkey_report_mode
.attr
,
2926 &dev_attr_hotkey_wakeup_reason
.attr
,
2927 &dev_attr_hotkey_wakeup_hotunplug_complete
.attr
,
2928 &dev_attr_hotkey_mask
.attr
,
2929 &dev_attr_hotkey_all_mask
.attr
,
2930 &dev_attr_hotkey_recommended_mask
.attr
,
2931 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2932 &dev_attr_hotkey_source_mask
.attr
,
2933 &dev_attr_hotkey_poll_freq
.attr
,
2938 * Sync both the hw and sw blocking state of all switches
2940 static void tpacpi_send_radiosw_update(void)
2945 * We must sync all rfkill controllers *before* issuing any
2946 * rfkill input events, or we will race the rfkill core input
2949 * tpacpi_inputdev_send_mutex works as a syncronization point
2952 * We optimize to avoid numerous calls to hotkey_get_wlsw.
2955 wlsw
= hotkey_get_wlsw();
2957 /* Sync hw blocking state first if it is hw-blocked */
2958 if (wlsw
== TPACPI_RFK_RADIO_OFF
)
2959 tpacpi_rfk_update_hwblock_state(true);
2961 /* Sync sw blocking state */
2962 tpacpi_rfk_update_swstate_all();
2964 /* Sync hw blocking state last if it is hw-unblocked */
2965 if (wlsw
== TPACPI_RFK_RADIO_ON
)
2966 tpacpi_rfk_update_hwblock_state(false);
2968 /* Issue rfkill input event for WLSW switch */
2970 mutex_lock(&tpacpi_inputdev_send_mutex
);
2972 input_report_switch(tpacpi_inputdev
,
2973 SW_RFKILL_ALL
, (wlsw
> 0));
2974 input_sync(tpacpi_inputdev
);
2976 mutex_unlock(&tpacpi_inputdev_send_mutex
);
2980 * this can be unconditional, as we will poll state again
2981 * if userspace uses the notify to read data
2983 hotkey_radio_sw_notify_change();
2986 static void hotkey_exit(void)
2988 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2989 mutex_lock(&hotkey_mutex
);
2990 hotkey_poll_stop_sync();
2991 mutex_unlock(&hotkey_mutex
);
2994 if (hotkey_dev_attributes
)
2995 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
2997 kfree(hotkey_keycode_map
);
2999 dbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_HKEY
,
3000 "restoring original HKEY status and mask\n");
3001 /* yes, there is a bitwise or below, we want the
3002 * functions to be called even if one of them fail */
3003 if (((tp_features
.hotkey_mask
&&
3004 hotkey_mask_set(hotkey_orig_mask
)) |
3005 hotkey_status_set(false)) != 0)
3007 "failed to restore hot key mask "
3008 "to BIOS defaults\n");
3011 static void __init
hotkey_unmap(const unsigned int scancode
)
3013 if (hotkey_keycode_map
[scancode
] != KEY_RESERVED
) {
3014 clear_bit(hotkey_keycode_map
[scancode
],
3015 tpacpi_inputdev
->keybit
);
3016 hotkey_keycode_map
[scancode
] = KEY_RESERVED
;
3022 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3025 #define TPACPI_HK_Q_INIMASK 0x0001
3027 static const struct tpacpi_quirk tpacpi_hotkey_qtable
[] __initconst
= {
3028 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK
), /* 600E */
3029 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK
), /* 600E */
3030 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK
), /* 770, 770E, 770ED */
3031 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK
), /* A20m */
3032 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK
), /* A20p */
3033 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK
), /* A21e, A22e */
3034 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK
), /* A21e */
3035 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK
), /* A21m, A22m */
3036 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK
), /* A21p, A22p */
3037 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK
), /* A22e */
3038 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK
), /* A22m */
3039 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK
), /* A30/p (0) */
3040 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK
), /* R30 */
3041 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK
), /* R31 */
3042 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK
), /* T20 */
3043 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK
), /* T21 */
3044 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK
), /* T22 */
3045 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK
), /* X20, X21 */
3046 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK
), /* X22, X23, X24 */
3049 static int __init
hotkey_init(struct ibm_init_struct
*iibm
)
3051 /* Requirements for changing the default keymaps:
3053 * 1. Many of the keys are mapped to KEY_RESERVED for very
3054 * good reasons. Do not change them unless you have deep
3055 * knowledge on the IBM and Lenovo ThinkPad firmware for
3056 * the various ThinkPad models. The driver behaves
3057 * differently for KEY_RESERVED: such keys have their
3058 * hot key mask *unset* in mask_recommended, and also
3059 * in the initial hot key mask programmed into the
3060 * firmware at driver load time, which means the firm-
3061 * ware may react very differently if you change them to
3064 * 2. You must be subscribed to the linux-thinkpad and
3065 * ibm-acpi-devel mailing lists, and you should read the
3066 * list archives since 2007 if you want to change the
3067 * keymaps. This requirement exists so that you will
3068 * know the past history of problems with the thinkpad-
3069 * acpi driver keymaps, and also that you will be
3070 * listening to any bug reports;
3072 * 3. Do not send thinkpad-acpi specific patches directly to
3073 * for merging, *ever*. Send them to the linux-acpi
3074 * mailinglist for comments. Merging is to be done only
3075 * through acpi-test and the ACPI maintainer.
3077 * If the above is too much to ask, don't change the keymap.
3078 * Ask the thinkpad-acpi maintainer to do it, instead.
3080 static u16 ibm_keycode_map
[] __initdata
= {
3081 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3082 KEY_FN_F1
, KEY_FN_F2
, KEY_COFFEE
, KEY_SLEEP
,
3083 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
3084 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
3086 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
3087 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
3088 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
3089 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
3091 /* brightness: firmware always reacts to them */
3092 KEY_RESERVED
, /* 0x0F: FN+HOME (brightness up) */
3093 KEY_RESERVED
, /* 0x10: FN+END (brightness down) */
3095 /* Thinklight: firmware always react to it */
3096 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
3098 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
3099 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
3101 /* Volume: firmware always react to it and reprograms
3102 * the built-in *extra* mixer. Never map it to control
3103 * another mixer by default. */
3104 KEY_RESERVED
, /* 0x14: VOLUME UP */
3105 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
3106 KEY_RESERVED
, /* 0x16: MUTE */
3108 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
3110 /* (assignments unknown, please report if found) */
3111 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3112 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3114 static u16 lenovo_keycode_map
[] __initdata
= {
3115 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3116 KEY_FN_F1
, KEY_COFFEE
, KEY_BATTERY
, KEY_SLEEP
,
3117 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
3118 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
3120 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
3121 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
3122 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
3123 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
3125 /* These should be enabled --only-- when ACPI video
3126 * is disabled (i.e. in "vendor" mode), and are handled
3127 * in a special way by the init code */
3128 KEY_BRIGHTNESSUP
, /* 0x0F: FN+HOME (brightness up) */
3129 KEY_BRIGHTNESSDOWN
, /* 0x10: FN+END (brightness down) */
3131 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
3133 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
3134 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
3136 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3137 * react to it and reprograms the built-in *extra* mixer.
3138 * Never map it to control another mixer by default.
3140 * T60?, T61, R60?, R61: firmware and EC tries to send
3141 * these over the regular keyboard, so these are no-ops,
3142 * but there are still weird bugs re. MUTE, so do not
3143 * change unless you get test reports from all Lenovo
3144 * models. May cause the BIOS to interfere with the
3147 KEY_RESERVED
, /* 0x14: VOLUME UP */
3148 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
3149 KEY_RESERVED
, /* 0x16: MUTE */
3151 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
3153 /* (assignments unknown, please report if found) */
3154 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3155 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3158 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
3159 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
3160 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
3165 bool radiosw_state
= false;
3166 bool tabletsw_state
= false;
3168 unsigned long quirks
;
3170 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3171 "initializing hotkey subdriver\n");
3173 BUG_ON(!tpacpi_inputdev
);
3174 BUG_ON(tpacpi_inputdev
->open
!= NULL
||
3175 tpacpi_inputdev
->close
!= NULL
);
3177 TPACPI_ACPIHANDLE_INIT(hkey
);
3178 mutex_init(&hotkey_mutex
);
3180 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3181 mutex_init(&hotkey_thread_mutex
);
3182 mutex_init(&hotkey_thread_data_mutex
);
3185 /* hotkey not supported on 570 */
3186 tp_features
.hotkey
= hkey_handle
!= NULL
;
3188 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3190 str_supported(tp_features
.hotkey
));
3192 if (!tp_features
.hotkey
)
3195 quirks
= tpacpi_check_quirks(tpacpi_hotkey_qtable
,
3196 ARRAY_SIZE(tpacpi_hotkey_qtable
));
3198 tpacpi_disable_brightness_delay();
3200 /* MUST have enough space for all attributes to be added to
3201 * hotkey_dev_attributes */
3202 hotkey_dev_attributes
= create_attr_set(
3203 ARRAY_SIZE(hotkey_attributes
) + 2,
3205 if (!hotkey_dev_attributes
)
3207 res
= add_many_to_attr_set(hotkey_dev_attributes
,
3209 ARRAY_SIZE(hotkey_attributes
));
3213 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
3214 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3215 for HKEY interface version 0x100 */
3216 if (acpi_evalf(hkey_handle
, &hkeyv
, "MHKV", "qd")) {
3217 if ((hkeyv
>> 8) != 1) {
3218 printk(TPACPI_ERR
"unknown version of the "
3219 "HKEY interface: 0x%x\n", hkeyv
);
3220 printk(TPACPI_ERR
"please report this to %s\n",
3224 * MHKV 0x100 in A31, R40, R40e,
3225 * T4x, X31, and later
3227 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3228 "firmware HKEY interface version: 0x%x\n",
3231 /* Paranoia check AND init hotkey_all_mask */
3232 if (!acpi_evalf(hkey_handle
, &hotkey_all_mask
,
3235 "missing MHKA handler, "
3236 "please report this to %s\n",
3238 /* Fallback: pre-init for FN+F3,F4,F12 */
3239 hotkey_all_mask
= 0x080cU
;
3241 tp_features
.hotkey_mask
= 1;
3246 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3247 "hotkey masks are %s\n",
3248 str_supported(tp_features
.hotkey_mask
));
3250 /* Init hotkey_all_mask if not initialized yet */
3251 if (!tp_features
.hotkey_mask
&& !hotkey_all_mask
&&
3252 (quirks
& TPACPI_HK_Q_INIMASK
))
3253 hotkey_all_mask
= 0x080cU
; /* FN+F12, FN+F4, FN+F3 */
3255 /* Init hotkey_acpi_mask and hotkey_orig_mask */
3256 if (tp_features
.hotkey_mask
) {
3257 /* hotkey_source_mask *must* be zero for
3258 * the first hotkey_mask_get to return hotkey_orig_mask */
3259 res
= hotkey_mask_get();
3263 hotkey_orig_mask
= hotkey_acpi_mask
;
3265 hotkey_orig_mask
= hotkey_all_mask
;
3266 hotkey_acpi_mask
= hotkey_all_mask
;
3269 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3271 tp_features
.hotkey_wlsw
= 1;
3272 radiosw_state
= !!tpacpi_wlsw_emulstate
;
3274 "radio switch emulation enabled\n");
3277 /* Not all thinkpads have a hardware radio switch */
3278 if (acpi_evalf(hkey_handle
, &status
, "WLSW", "qd")) {
3279 tp_features
.hotkey_wlsw
= 1;
3280 radiosw_state
= !!status
;
3282 "radio switch found; radios are %s\n",
3283 enabled(status
, 0));
3285 if (tp_features
.hotkey_wlsw
)
3286 res
= add_to_attr_set(hotkey_dev_attributes
,
3287 &dev_attr_hotkey_radio_sw
.attr
);
3289 /* For X41t, X60t, X61t Tablets... */
3290 if (!res
&& acpi_evalf(hkey_handle
, &status
, "MHKG", "qd")) {
3291 tp_features
.hotkey_tablet
= 1;
3292 tabletsw_state
= !!(status
& TP_HOTKEY_TABLET_MASK
);
3294 "possible tablet mode switch found; "
3295 "ThinkPad in %s mode\n",
3296 (tabletsw_state
) ? "tablet" : "laptop");
3297 res
= add_to_attr_set(hotkey_dev_attributes
,
3298 &dev_attr_hotkey_tablet_mode
.attr
);
3302 res
= register_attr_set_with_sysfs(
3303 hotkey_dev_attributes
,
3304 &tpacpi_pdev
->dev
.kobj
);
3308 /* Set up key map */
3310 hotkey_keycode_map
= kmalloc(TPACPI_HOTKEY_MAP_SIZE
,
3312 if (!hotkey_keycode_map
) {
3314 "failed to allocate memory for key map\n");
3319 if (tpacpi_is_lenovo()) {
3320 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3321 "using Lenovo default hot key map\n");
3322 memcpy(hotkey_keycode_map
, &lenovo_keycode_map
,
3323 TPACPI_HOTKEY_MAP_SIZE
);
3325 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3326 "using IBM default hot key map\n");
3327 memcpy(hotkey_keycode_map
, &ibm_keycode_map
,
3328 TPACPI_HOTKEY_MAP_SIZE
);
3331 input_set_capability(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
);
3332 tpacpi_inputdev
->keycodesize
= TPACPI_HOTKEY_MAP_TYPESIZE
;
3333 tpacpi_inputdev
->keycodemax
= TPACPI_HOTKEY_MAP_LEN
;
3334 tpacpi_inputdev
->keycode
= hotkey_keycode_map
;
3335 for (i
= 0; i
< TPACPI_HOTKEY_MAP_LEN
; i
++) {
3336 if (hotkey_keycode_map
[i
] != KEY_RESERVED
) {
3337 input_set_capability(tpacpi_inputdev
, EV_KEY
,
3338 hotkey_keycode_map
[i
]);
3340 if (i
< sizeof(hotkey_reserved_mask
)*8)
3341 hotkey_reserved_mask
|= 1 << i
;
3345 if (tp_features
.hotkey_wlsw
) {
3346 input_set_capability(tpacpi_inputdev
, EV_SW
, SW_RFKILL_ALL
);
3347 input_report_switch(tpacpi_inputdev
,
3348 SW_RFKILL_ALL
, radiosw_state
);
3350 if (tp_features
.hotkey_tablet
) {
3351 input_set_capability(tpacpi_inputdev
, EV_SW
, SW_TABLET_MODE
);
3352 input_report_switch(tpacpi_inputdev
,
3353 SW_TABLET_MODE
, tabletsw_state
);
3356 /* Do not issue duplicate brightness change events to
3357 * userspace. tpacpi_detect_brightness_capabilities() must have
3358 * been called before this point */
3359 if (tp_features
.bright_acpimode
&& acpi_video_backlight_support()) {
3361 "This ThinkPad has standard ACPI backlight "
3362 "brightness control, supported by the ACPI "
3364 printk(TPACPI_NOTICE
3365 "Disabling thinkpad-acpi brightness events "
3368 /* Disable brightness up/down on Lenovo thinkpads when
3369 * ACPI is handling them, otherwise it is plain impossible
3370 * for userspace to do something even remotely sane */
3371 hotkey_reserved_mask
|=
3372 (1 << TP_ACPI_HOTKEYSCAN_FNHOME
)
3373 | (1 << TP_ACPI_HOTKEYSCAN_FNEND
);
3374 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME
);
3375 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND
);
3378 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3379 hotkey_source_mask
= TPACPI_HKEY_NVRAM_GOOD_MASK
3381 & ~hotkey_reserved_mask
;
3383 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3384 "hotkey source mask 0x%08x, polling freq %u\n",
3385 hotkey_source_mask
, hotkey_poll_freq
);
3388 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3389 "enabling firmware HKEY event interface...\n");
3390 res
= hotkey_status_set(true);
3395 res
= hotkey_mask_set(((hotkey_all_mask
& ~hotkey_reserved_mask
)
3396 | hotkey_driver_mask
)
3397 & ~hotkey_source_mask
);
3398 if (res
< 0 && res
!= -ENXIO
) {
3402 hotkey_user_mask
= (hotkey_acpi_mask
| hotkey_source_mask
)
3403 & ~hotkey_reserved_mask
;
3404 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3405 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3406 hotkey_user_mask
, hotkey_acpi_mask
, hotkey_source_mask
);
3408 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3409 "legacy ibm/hotkey event reporting over procfs %s\n",
3410 (hotkey_report_mode
< 2) ?
3411 "enabled" : "disabled");
3413 tpacpi_inputdev
->open
= &hotkey_inputdev_open
;
3414 tpacpi_inputdev
->close
= &hotkey_inputdev_close
;
3416 hotkey_poll_setup_safe(true);
3421 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
3422 hotkey_dev_attributes
= NULL
;
3424 return (res
< 0)? res
: 1;
3427 static bool hotkey_notify_hotkey(const u32 hkey
,
3429 bool *ignore_acpi_ev
)
3431 /* 0x1000-0x1FFF: key presses */
3432 unsigned int scancode
= hkey
& 0xfff;
3433 *send_acpi_ev
= true;
3434 *ignore_acpi_ev
= false;
3436 if (scancode
> 0 && scancode
< 0x21) {
3438 if (!(hotkey_source_mask
& (1 << scancode
))) {
3439 tpacpi_input_send_key_masked(scancode
);
3440 *send_acpi_ev
= false;
3442 *ignore_acpi_ev
= true;
3449 static bool hotkey_notify_wakeup(const u32 hkey
,
3451 bool *ignore_acpi_ev
)
3453 /* 0x2000-0x2FFF: Wakeup reason */
3454 *send_acpi_ev
= true;
3455 *ignore_acpi_ev
= false;
3458 case TP_HKEY_EV_WKUP_S3_UNDOCK
: /* suspend, undock */
3459 case TP_HKEY_EV_WKUP_S4_UNDOCK
: /* hibernation, undock */
3460 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_UNDOCK
;
3461 *ignore_acpi_ev
= true;
3464 case TP_HKEY_EV_WKUP_S3_BAYEJ
: /* suspend, bay eject */
3465 case TP_HKEY_EV_WKUP_S4_BAYEJ
: /* hibernation, bay eject */
3466 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_BAYEJ
;
3467 *ignore_acpi_ev
= true;
3470 case TP_HKEY_EV_WKUP_S3_BATLOW
: /* Battery on critical low level/S3 */
3471 case TP_HKEY_EV_WKUP_S4_BATLOW
: /* Battery on critical low level/S4 */
3473 "EMERGENCY WAKEUP: battery almost empty\n");
3474 /* how to auto-heal: */
3475 /* 2313: woke up from S3, go to S4/S5 */
3476 /* 2413: woke up from S4, go to S5 */
3483 if (hotkey_wakeup_reason
!= TP_ACPI_WAKEUP_NONE
) {
3485 "woke up due to a hot-unplug "
3487 hotkey_wakeup_reason_notify_change();
3492 static bool hotkey_notify_usrevent(const u32 hkey
,
3494 bool *ignore_acpi_ev
)
3496 /* 0x5000-0x5FFF: human interface helpers */
3497 *send_acpi_ev
= true;
3498 *ignore_acpi_ev
= false;
3501 case TP_HKEY_EV_PEN_INSERTED
: /* X61t: tablet pen inserted into bay */
3502 case TP_HKEY_EV_PEN_REMOVED
: /* X61t: tablet pen removed from bay */
3505 case TP_HKEY_EV_TABLET_TABLET
: /* X41t-X61t: tablet mode */
3506 case TP_HKEY_EV_TABLET_NOTEBOOK
: /* X41t-X61t: normal mode */
3507 tpacpi_input_send_tabletsw();
3508 hotkey_tablet_mode_notify_change();
3509 *send_acpi_ev
= false;
3512 case TP_HKEY_EV_LID_CLOSE
: /* Lid closed */
3513 case TP_HKEY_EV_LID_OPEN
: /* Lid opened */
3514 case TP_HKEY_EV_BRGHT_CHANGED
: /* brightness changed */
3515 /* do not propagate these events */
3516 *ignore_acpi_ev
= true;
3524 static void thermal_dump_all_sensors(void);
3526 static bool hotkey_notify_thermal(const u32 hkey
,
3528 bool *ignore_acpi_ev
)
3532 /* 0x6000-0x6FFF: thermal alarms */
3533 *send_acpi_ev
= true;
3534 *ignore_acpi_ev
= false;
3537 case TP_HKEY_EV_THM_TABLE_CHANGED
:
3539 "EC reports that Thermal Table has changed\n");
3540 /* recommended action: do nothing, we don't have
3541 * Lenovo ATM information */
3543 case TP_HKEY_EV_ALARM_BAT_HOT
:
3545 "THERMAL ALARM: battery is too hot!\n");
3546 /* recommended action: warn user through gui */
3548 case TP_HKEY_EV_ALARM_BAT_XHOT
:
3550 "THERMAL EMERGENCY: battery is extremely hot!\n");
3551 /* recommended action: immediate sleep/hibernate */
3553 case TP_HKEY_EV_ALARM_SENSOR_HOT
:
3556 "a sensor reports something is too hot!\n");
3557 /* recommended action: warn user through gui, that */
3558 /* some internal component is too hot */
3560 case TP_HKEY_EV_ALARM_SENSOR_XHOT
:
3562 "THERMAL EMERGENCY: "
3563 "a sensor reports something is extremely hot!\n");
3564 /* recommended action: immediate sleep/hibernate */
3568 "THERMAL ALERT: unknown thermal alarm received\n");
3572 thermal_dump_all_sensors();
3577 static void hotkey_notify(struct ibm_struct
*ibm
, u32 event
)
3581 bool ignore_acpi_ev
;
3584 if (event
!= 0x80) {
3586 "unknown HKEY notification event %d\n", event
);
3587 /* forward it to userspace, maybe it knows how to handle it */
3588 acpi_bus_generate_netlink_event(
3589 ibm
->acpi
->device
->pnp
.device_class
,
3590 dev_name(&ibm
->acpi
->device
->dev
),
3596 if (!acpi_evalf(hkey_handle
, &hkey
, "MHKP", "d")) {
3597 printk(TPACPI_ERR
"failed to retrieve HKEY event\n");
3606 send_acpi_ev
= true;
3607 ignore_acpi_ev
= false;
3609 switch (hkey
>> 12) {
3611 /* 0x1000-0x1FFF: key presses */
3612 known_ev
= hotkey_notify_hotkey(hkey
, &send_acpi_ev
,
3616 /* 0x2000-0x2FFF: Wakeup reason */
3617 known_ev
= hotkey_notify_wakeup(hkey
, &send_acpi_ev
,
3621 /* 0x3000-0x3FFF: bay-related wakeups */
3623 case TP_HKEY_EV_BAYEJ_ACK
:
3624 hotkey_autosleep_ack
= 1;
3627 hotkey_wakeup_hotunplug_complete_notify_change();
3630 case TP_HKEY_EV_OPTDRV_EJ
:
3631 /* FIXME: kick libata if SATA link offline */
3639 /* 0x4000-0x4FFF: dock-related wakeups */
3640 if (hkey
== TP_HKEY_EV_UNDOCK_ACK
) {
3641 hotkey_autosleep_ack
= 1;
3644 hotkey_wakeup_hotunplug_complete_notify_change();
3651 /* 0x5000-0x5FFF: human interface helpers */
3652 known_ev
= hotkey_notify_usrevent(hkey
, &send_acpi_ev
,
3656 /* 0x6000-0x6FFF: thermal alarms */
3657 known_ev
= hotkey_notify_thermal(hkey
, &send_acpi_ev
,
3661 /* 0x7000-0x7FFF: misc */
3662 if (tp_features
.hotkey_wlsw
&&
3663 hkey
== TP_HKEY_EV_RFKILL_CHANGED
) {
3664 tpacpi_send_radiosw_update();
3669 /* fallthrough to default */
3674 printk(TPACPI_NOTICE
3675 "unhandled HKEY event 0x%04x\n", hkey
);
3676 printk(TPACPI_NOTICE
3677 "please report the conditions when this "
3678 "event happened to %s\n", TPACPI_MAIL
);
3682 if (!ignore_acpi_ev
&&
3683 (send_acpi_ev
|| hotkey_report_mode
< 2)) {
3684 acpi_bus_generate_proc_event(ibm
->acpi
->device
,
3688 /* netlink events */
3689 if (!ignore_acpi_ev
&& send_acpi_ev
) {
3690 acpi_bus_generate_netlink_event(
3691 ibm
->acpi
->device
->pnp
.device_class
,
3692 dev_name(&ibm
->acpi
->device
->dev
),
3698 static void hotkey_suspend(pm_message_t state
)
3700 /* Do these on suspend, we get the events on early resume! */
3701 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_NONE
;
3702 hotkey_autosleep_ack
= 0;
3705 static void hotkey_resume(void)
3707 tpacpi_disable_brightness_delay();
3709 if (hotkey_status_set(true) < 0 ||
3710 hotkey_mask_set(hotkey_acpi_mask
) < 0)
3712 "error while attempting to reset the event "
3713 "firmware interface\n");
3715 tpacpi_send_radiosw_update();
3716 hotkey_tablet_mode_notify_change();
3717 hotkey_wakeup_reason_notify_change();
3718 hotkey_wakeup_hotunplug_complete_notify_change();
3719 hotkey_poll_setup_safe(false);
3722 /* procfs -------------------------------------------------------------- */
3723 static int hotkey_read(struct seq_file
*m
)
3727 if (!tp_features
.hotkey
) {
3728 seq_printf(m
, "status:\t\tnot supported\n");
3732 if (mutex_lock_killable(&hotkey_mutex
))
3733 return -ERESTARTSYS
;
3734 res
= hotkey_status_get(&status
);
3736 res
= hotkey_mask_get();
3737 mutex_unlock(&hotkey_mutex
);
3741 seq_printf(m
, "status:\t\t%s\n", enabled(status
, 0));
3742 if (hotkey_all_mask
) {
3743 seq_printf(m
, "mask:\t\t0x%08x\n", hotkey_user_mask
);
3744 seq_printf(m
, "commands:\tenable, disable, reset, <mask>\n");
3746 seq_printf(m
, "mask:\t\tnot supported\n");
3747 seq_printf(m
, "commands:\tenable, disable, reset\n");
3753 static void hotkey_enabledisable_warn(bool enable
)
3755 tpacpi_log_usertask("procfs hotkey enable/disable");
3756 if (!WARN((tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
|| !enable
),
3758 "hotkey enable/disable functionality has been "
3759 "removed from the driver. Hotkeys are always "
3762 "Please remove the hotkey=enable module "
3763 "parameter, it is deprecated. Hotkeys are always "
3767 static int hotkey_write(char *buf
)
3773 if (!tp_features
.hotkey
)
3776 if (mutex_lock_killable(&hotkey_mutex
))
3777 return -ERESTARTSYS
;
3779 mask
= hotkey_user_mask
;
3782 while ((cmd
= next_cmd(&buf
))) {
3783 if (strlencmp(cmd
, "enable") == 0) {
3784 hotkey_enabledisable_warn(1);
3785 } else if (strlencmp(cmd
, "disable") == 0) {
3786 hotkey_enabledisable_warn(0);
3788 } else if (strlencmp(cmd
, "reset") == 0) {
3789 mask
= (hotkey_all_mask
| hotkey_source_mask
)
3790 & ~hotkey_reserved_mask
;
3791 } else if (sscanf(cmd
, "0x%x", &mask
) == 1) {
3793 } else if (sscanf(cmd
, "%x", &mask
) == 1) {
3802 tpacpi_disclose_usertask("procfs hotkey",
3803 "set mask to 0x%08x\n", mask
);
3804 res
= hotkey_user_mask_set(mask
);
3808 mutex_unlock(&hotkey_mutex
);
3812 static const struct acpi_device_id ibm_htk_device_ids
[] = {
3813 {TPACPI_ACPI_IBM_HKEY_HID
, 0},
3814 {TPACPI_ACPI_LENOVO_HKEY_HID
, 0},
3818 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
= {
3819 .hid
= ibm_htk_device_ids
,
3820 .notify
= hotkey_notify
,
3821 .handle
= &hkey_handle
,
3822 .type
= ACPI_DEVICE_NOTIFY
,
3825 static struct ibm_struct hotkey_driver_data
= {
3827 .read
= hotkey_read
,
3828 .write
= hotkey_write
,
3829 .exit
= hotkey_exit
,
3830 .resume
= hotkey_resume
,
3831 .suspend
= hotkey_suspend
,
3832 .acpi
= &ibm_hotkey_acpidriver
,
3835 /*************************************************************************
3836 * Bluetooth subdriver
3840 /* ACPI GBDC/SBDC bits */
3841 TP_ACPI_BLUETOOTH_HWPRESENT
= 0x01, /* Bluetooth hw available */
3842 TP_ACPI_BLUETOOTH_RADIOSSW
= 0x02, /* Bluetooth radio enabled */
3843 TP_ACPI_BLUETOOTH_RESUMECTRL
= 0x04, /* Bluetooth state at resume:
3844 0 = disable, 1 = enable */
3848 /* ACPI \BLTH commands */
3849 TP_ACPI_BLTH_GET_ULTRAPORT_ID
= 0x00, /* Get Ultraport BT ID */
3850 TP_ACPI_BLTH_GET_PWR_ON_RESUME
= 0x01, /* Get power-on-resume state */
3851 TP_ACPI_BLTH_PWR_ON_ON_RESUME
= 0x02, /* Resume powered on */
3852 TP_ACPI_BLTH_PWR_OFF_ON_RESUME
= 0x03, /* Resume powered off */
3853 TP_ACPI_BLTH_SAVE_STATE
= 0x05, /* Save state for S4/S5 */
3856 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3858 static int bluetooth_get_status(void)
3862 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3863 if (dbg_bluetoothemul
)
3864 return (tpacpi_bluetooth_emulstate
) ?
3865 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
3868 if (!acpi_evalf(hkey_handle
, &status
, "GBDC", "d"))
3871 return ((status
& TP_ACPI_BLUETOOTH_RADIOSSW
) != 0) ?
3872 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
3875 static int bluetooth_set_status(enum tpacpi_rfkill_state state
)
3879 vdbg_printk(TPACPI_DBG_RFKILL
,
3880 "will attempt to %s bluetooth\n",
3881 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
3883 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3884 if (dbg_bluetoothemul
) {
3885 tpacpi_bluetooth_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
3890 if (state
== TPACPI_RFK_RADIO_ON
)
3891 status
= TP_ACPI_BLUETOOTH_RADIOSSW
3892 | TP_ACPI_BLUETOOTH_RESUMECTRL
;
3896 if (!acpi_evalf(hkey_handle
, NULL
, "SBDC", "vd", status
))
3902 /* sysfs bluetooth enable ---------------------------------------------- */
3903 static ssize_t
bluetooth_enable_show(struct device
*dev
,
3904 struct device_attribute
*attr
,
3907 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID
,
3911 static ssize_t
bluetooth_enable_store(struct device
*dev
,
3912 struct device_attribute
*attr
,
3913 const char *buf
, size_t count
)
3915 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID
,
3919 static struct device_attribute dev_attr_bluetooth_enable
=
3920 __ATTR(bluetooth_enable
, S_IWUSR
| S_IRUGO
,
3921 bluetooth_enable_show
, bluetooth_enable_store
);
3923 /* --------------------------------------------------------------------- */
3925 static struct attribute
*bluetooth_attributes
[] = {
3926 &dev_attr_bluetooth_enable
.attr
,
3930 static const struct attribute_group bluetooth_attr_group
= {
3931 .attrs
= bluetooth_attributes
,
3934 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops
= {
3935 .get_status
= bluetooth_get_status
,
3936 .set_status
= bluetooth_set_status
,
3939 static void bluetooth_shutdown(void)
3941 /* Order firmware to save current state to NVRAM */
3942 if (!acpi_evalf(NULL
, NULL
, "\\BLTH", "vd",
3943 TP_ACPI_BLTH_SAVE_STATE
))
3944 printk(TPACPI_NOTICE
3945 "failed to save bluetooth state to NVRAM\n");
3947 vdbg_printk(TPACPI_DBG_RFKILL
,
3948 "bluestooth state saved to NVRAM\n");
3951 static void bluetooth_exit(void)
3953 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
3954 &bluetooth_attr_group
);
3956 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
);
3958 bluetooth_shutdown();
3961 static int __init
bluetooth_init(struct ibm_init_struct
*iibm
)
3966 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
3967 "initializing bluetooth subdriver\n");
3969 TPACPI_ACPIHANDLE_INIT(hkey
);
3971 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3972 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
3973 tp_features
.bluetooth
= hkey_handle
&&
3974 acpi_evalf(hkey_handle
, &status
, "GBDC", "qd");
3976 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
3977 "bluetooth is %s, status 0x%02x\n",
3978 str_supported(tp_features
.bluetooth
),
3981 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3982 if (dbg_bluetoothemul
) {
3983 tp_features
.bluetooth
= 1;
3985 "bluetooth switch emulation enabled\n");
3988 if (tp_features
.bluetooth
&&
3989 !(status
& TP_ACPI_BLUETOOTH_HWPRESENT
)) {
3990 /* no bluetooth hardware present in system */
3991 tp_features
.bluetooth
= 0;
3992 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
3993 "bluetooth hardware not installed\n");
3996 if (!tp_features
.bluetooth
)
3999 res
= tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
,
4000 &bluetooth_tprfk_ops
,
4001 RFKILL_TYPE_BLUETOOTH
,
4002 TPACPI_RFK_BLUETOOTH_SW_NAME
,
4007 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
4008 &bluetooth_attr_group
);
4010 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
);
4017 /* procfs -------------------------------------------------------------- */
4018 static int bluetooth_read(struct seq_file
*m
)
4020 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID
, m
);
4023 static int bluetooth_write(char *buf
)
4025 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID
, buf
);
4028 static struct ibm_struct bluetooth_driver_data
= {
4029 .name
= "bluetooth",
4030 .read
= bluetooth_read
,
4031 .write
= bluetooth_write
,
4032 .exit
= bluetooth_exit
,
4033 .shutdown
= bluetooth_shutdown
,
4036 /*************************************************************************
4041 /* ACPI GWAN/SWAN bits */
4042 TP_ACPI_WANCARD_HWPRESENT
= 0x01, /* Wan hw available */
4043 TP_ACPI_WANCARD_RADIOSSW
= 0x02, /* Wan radio enabled */
4044 TP_ACPI_WANCARD_RESUMECTRL
= 0x04, /* Wan state at resume:
4045 0 = disable, 1 = enable */
4048 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4050 static int wan_get_status(void)
4054 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4056 return (tpacpi_wwan_emulstate
) ?
4057 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4060 if (!acpi_evalf(hkey_handle
, &status
, "GWAN", "d"))
4063 return ((status
& TP_ACPI_WANCARD_RADIOSSW
) != 0) ?
4064 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4067 static int wan_set_status(enum tpacpi_rfkill_state state
)
4071 vdbg_printk(TPACPI_DBG_RFKILL
,
4072 "will attempt to %s wwan\n",
4073 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
4075 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4077 tpacpi_wwan_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
4082 if (state
== TPACPI_RFK_RADIO_ON
)
4083 status
= TP_ACPI_WANCARD_RADIOSSW
4084 | TP_ACPI_WANCARD_RESUMECTRL
;
4088 if (!acpi_evalf(hkey_handle
, NULL
, "SWAN", "vd", status
))
4094 /* sysfs wan enable ---------------------------------------------------- */
4095 static ssize_t
wan_enable_show(struct device
*dev
,
4096 struct device_attribute
*attr
,
4099 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID
,
4103 static ssize_t
wan_enable_store(struct device
*dev
,
4104 struct device_attribute
*attr
,
4105 const char *buf
, size_t count
)
4107 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID
,
4111 static struct device_attribute dev_attr_wan_enable
=
4112 __ATTR(wwan_enable
, S_IWUSR
| S_IRUGO
,
4113 wan_enable_show
, wan_enable_store
);
4115 /* --------------------------------------------------------------------- */
4117 static struct attribute
*wan_attributes
[] = {
4118 &dev_attr_wan_enable
.attr
,
4122 static const struct attribute_group wan_attr_group
= {
4123 .attrs
= wan_attributes
,
4126 static const struct tpacpi_rfk_ops wan_tprfk_ops
= {
4127 .get_status
= wan_get_status
,
4128 .set_status
= wan_set_status
,
4131 static void wan_shutdown(void)
4133 /* Order firmware to save current state to NVRAM */
4134 if (!acpi_evalf(NULL
, NULL
, "\\WGSV", "vd",
4135 TP_ACPI_WGSV_SAVE_STATE
))
4136 printk(TPACPI_NOTICE
4137 "failed to save WWAN state to NVRAM\n");
4139 vdbg_printk(TPACPI_DBG_RFKILL
,
4140 "WWAN state saved to NVRAM\n");
4143 static void wan_exit(void)
4145 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
4148 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID
);
4153 static int __init
wan_init(struct ibm_init_struct
*iibm
)
4158 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4159 "initializing wan subdriver\n");
4161 TPACPI_ACPIHANDLE_INIT(hkey
);
4163 tp_features
.wan
= hkey_handle
&&
4164 acpi_evalf(hkey_handle
, &status
, "GWAN", "qd");
4166 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4167 "wan is %s, status 0x%02x\n",
4168 str_supported(tp_features
.wan
),
4171 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4173 tp_features
.wan
= 1;
4175 "wwan switch emulation enabled\n");
4178 if (tp_features
.wan
&&
4179 !(status
& TP_ACPI_WANCARD_HWPRESENT
)) {
4180 /* no wan hardware present in system */
4181 tp_features
.wan
= 0;
4182 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4183 "wan hardware not installed\n");
4186 if (!tp_features
.wan
)
4189 res
= tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID
,
4192 TPACPI_RFK_WWAN_SW_NAME
,
4197 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
4201 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID
);
4208 /* procfs -------------------------------------------------------------- */
4209 static int wan_read(struct seq_file
*m
)
4211 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID
, m
);
4214 static int wan_write(char *buf
)
4216 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID
, buf
);
4219 static struct ibm_struct wan_driver_data
= {
4224 .shutdown
= wan_shutdown
,
4227 /*************************************************************************
4232 /* ACPI GUWB/SUWB bits */
4233 TP_ACPI_UWB_HWPRESENT
= 0x01, /* UWB hw available */
4234 TP_ACPI_UWB_RADIOSSW
= 0x02, /* UWB radio enabled */
4237 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4239 static int uwb_get_status(void)
4243 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4245 return (tpacpi_uwb_emulstate
) ?
4246 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4249 if (!acpi_evalf(hkey_handle
, &status
, "GUWB", "d"))
4252 return ((status
& TP_ACPI_UWB_RADIOSSW
) != 0) ?
4253 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4256 static int uwb_set_status(enum tpacpi_rfkill_state state
)
4260 vdbg_printk(TPACPI_DBG_RFKILL
,
4261 "will attempt to %s UWB\n",
4262 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
4264 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4266 tpacpi_uwb_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
4271 if (state
== TPACPI_RFK_RADIO_ON
)
4272 status
= TP_ACPI_UWB_RADIOSSW
;
4276 if (!acpi_evalf(hkey_handle
, NULL
, "SUWB", "vd", status
))
4282 /* --------------------------------------------------------------------- */
4284 static const struct tpacpi_rfk_ops uwb_tprfk_ops
= {
4285 .get_status
= uwb_get_status
,
4286 .set_status
= uwb_set_status
,
4289 static void uwb_exit(void)
4291 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID
);
4294 static int __init
uwb_init(struct ibm_init_struct
*iibm
)
4299 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4300 "initializing uwb subdriver\n");
4302 TPACPI_ACPIHANDLE_INIT(hkey
);
4304 tp_features
.uwb
= hkey_handle
&&
4305 acpi_evalf(hkey_handle
, &status
, "GUWB", "qd");
4307 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4308 "uwb is %s, status 0x%02x\n",
4309 str_supported(tp_features
.uwb
),
4312 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4314 tp_features
.uwb
= 1;
4316 "uwb switch emulation enabled\n");
4319 if (tp_features
.uwb
&&
4320 !(status
& TP_ACPI_UWB_HWPRESENT
)) {
4321 /* no uwb hardware present in system */
4322 tp_features
.uwb
= 0;
4323 dbg_printk(TPACPI_DBG_INIT
,
4324 "uwb hardware not installed\n");
4327 if (!tp_features
.uwb
)
4330 res
= tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID
,
4333 TPACPI_RFK_UWB_SW_NAME
,
4338 static struct ibm_struct uwb_driver_data
= {
4341 .flags
.experimental
= 1,
4344 /*************************************************************************
4348 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
4350 enum video_access_mode
{
4351 TPACPI_VIDEO_NONE
= 0,
4352 TPACPI_VIDEO_570
, /* 570 */
4353 TPACPI_VIDEO_770
, /* 600e/x, 770e, 770x */
4354 TPACPI_VIDEO_NEW
, /* all others */
4357 enum { /* video status flags, based on VIDEO_570 */
4358 TP_ACPI_VIDEO_S_LCD
= 0x01, /* LCD output enabled */
4359 TP_ACPI_VIDEO_S_CRT
= 0x02, /* CRT output enabled */
4360 TP_ACPI_VIDEO_S_DVI
= 0x08, /* DVI output enabled */
4363 enum { /* TPACPI_VIDEO_570 constants */
4364 TP_ACPI_VIDEO_570_PHSCMD
= 0x87, /* unknown magic constant :( */
4365 TP_ACPI_VIDEO_570_PHSMASK
= 0x03, /* PHS bits that map to
4366 * video_status_flags */
4367 TP_ACPI_VIDEO_570_PHS2CMD
= 0x8b, /* unknown magic constant :( */
4368 TP_ACPI_VIDEO_570_PHS2SET
= 0x80, /* unknown magic constant :( */
4371 static enum video_access_mode video_supported
;
4372 static int video_orig_autosw
;
4374 static int video_autosw_get(void);
4375 static int video_autosw_set(int enable
);
4377 TPACPI_HANDLE(vid2
, root
, "\\_SB.PCI0.AGPB.VID"); /* G41 */
4379 static int __init
video_init(struct ibm_init_struct
*iibm
)
4383 vdbg_printk(TPACPI_DBG_INIT
, "initializing video subdriver\n");
4385 TPACPI_ACPIHANDLE_INIT(vid
);
4386 if (tpacpi_is_ibm())
4387 TPACPI_ACPIHANDLE_INIT(vid2
);
4389 if (vid2_handle
&& acpi_evalf(NULL
, &ivga
, "\\IVGA", "d") && ivga
)
4390 /* G41, assume IVGA doesn't change */
4391 vid_handle
= vid2_handle
;
4394 /* video switching not supported on R30, R31 */
4395 video_supported
= TPACPI_VIDEO_NONE
;
4396 else if (tpacpi_is_ibm() &&
4397 acpi_evalf(vid_handle
, &video_orig_autosw
, "SWIT", "qd"))
4399 video_supported
= TPACPI_VIDEO_570
;
4400 else if (tpacpi_is_ibm() &&
4401 acpi_evalf(vid_handle
, &video_orig_autosw
, "^VADL", "qd"))
4402 /* 600e/x, 770e, 770x */
4403 video_supported
= TPACPI_VIDEO_770
;
4406 video_supported
= TPACPI_VIDEO_NEW
;
4408 vdbg_printk(TPACPI_DBG_INIT
, "video is %s, mode %d\n",
4409 str_supported(video_supported
!= TPACPI_VIDEO_NONE
),
4412 return (video_supported
!= TPACPI_VIDEO_NONE
)? 0 : 1;
4415 static void video_exit(void)
4417 dbg_printk(TPACPI_DBG_EXIT
,
4418 "restoring original video autoswitch mode\n");
4419 if (video_autosw_set(video_orig_autosw
))
4420 printk(TPACPI_ERR
"error while trying to restore original "
4421 "video autoswitch mode\n");
4424 static int video_outputsw_get(void)
4429 switch (video_supported
) {
4430 case TPACPI_VIDEO_570
:
4431 if (!acpi_evalf(NULL
, &i
, "\\_SB.PHS", "dd",
4432 TP_ACPI_VIDEO_570_PHSCMD
))
4434 status
= i
& TP_ACPI_VIDEO_570_PHSMASK
;
4436 case TPACPI_VIDEO_770
:
4437 if (!acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
4440 status
|= TP_ACPI_VIDEO_S_LCD
;
4441 if (!acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
4444 status
|= TP_ACPI_VIDEO_S_CRT
;
4446 case TPACPI_VIDEO_NEW
:
4447 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 1) ||
4448 !acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
4451 status
|= TP_ACPI_VIDEO_S_CRT
;
4453 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0) ||
4454 !acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
4457 status
|= TP_ACPI_VIDEO_S_LCD
;
4458 if (!acpi_evalf(NULL
, &i
, "\\VCDD", "d"))
4461 status
|= TP_ACPI_VIDEO_S_DVI
;
4470 static int video_outputsw_set(int status
)
4475 switch (video_supported
) {
4476 case TPACPI_VIDEO_570
:
4477 res
= acpi_evalf(NULL
, NULL
,
4478 "\\_SB.PHS2", "vdd",
4479 TP_ACPI_VIDEO_570_PHS2CMD
,
4480 status
| TP_ACPI_VIDEO_570_PHS2SET
);
4482 case TPACPI_VIDEO_770
:
4483 autosw
= video_autosw_get();
4487 res
= video_autosw_set(1);
4490 res
= acpi_evalf(vid_handle
, NULL
,
4491 "ASWT", "vdd", status
* 0x100, 0);
4492 if (!autosw
&& video_autosw_set(autosw
)) {
4494 "video auto-switch left enabled due to error\n");
4498 case TPACPI_VIDEO_NEW
:
4499 res
= acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0x80) &&
4500 acpi_evalf(NULL
, NULL
, "\\VSDS", "vdd", status
, 1);
4506 return (res
)? 0 : -EIO
;
4509 static int video_autosw_get(void)
4513 switch (video_supported
) {
4514 case TPACPI_VIDEO_570
:
4515 if (!acpi_evalf(vid_handle
, &autosw
, "SWIT", "d"))
4518 case TPACPI_VIDEO_770
:
4519 case TPACPI_VIDEO_NEW
:
4520 if (!acpi_evalf(vid_handle
, &autosw
, "^VDEE", "d"))
4530 static int video_autosw_set(int enable
)
4532 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", (enable
)? 1 : 0))
4537 static int video_outputsw_cycle(void)
4539 int autosw
= video_autosw_get();
4545 switch (video_supported
) {
4546 case TPACPI_VIDEO_570
:
4547 res
= video_autosw_set(1);
4550 res
= acpi_evalf(ec_handle
, NULL
, "_Q16", "v");
4552 case TPACPI_VIDEO_770
:
4553 case TPACPI_VIDEO_NEW
:
4554 res
= video_autosw_set(1);
4557 res
= acpi_evalf(vid_handle
, NULL
, "VSWT", "v");
4562 if (!autosw
&& video_autosw_set(autosw
)) {
4564 "video auto-switch left enabled due to error\n");
4568 return (res
)? 0 : -EIO
;
4571 static int video_expand_toggle(void)
4573 switch (video_supported
) {
4574 case TPACPI_VIDEO_570
:
4575 return acpi_evalf(ec_handle
, NULL
, "_Q17", "v")?
4577 case TPACPI_VIDEO_770
:
4578 return acpi_evalf(vid_handle
, NULL
, "VEXP", "v")?
4580 case TPACPI_VIDEO_NEW
:
4581 return acpi_evalf(NULL
, NULL
, "\\VEXP", "v")?
4589 static int video_read(struct seq_file
*m
)
4593 if (video_supported
== TPACPI_VIDEO_NONE
) {
4594 seq_printf(m
, "status:\t\tnot supported\n");
4598 /* Even reads can crash X.org, so... */
4599 if (!capable(CAP_SYS_ADMIN
))
4602 status
= video_outputsw_get();
4606 autosw
= video_autosw_get();
4610 seq_printf(m
, "status:\t\tsupported\n");
4611 seq_printf(m
, "lcd:\t\t%s\n", enabled(status
, 0));
4612 seq_printf(m
, "crt:\t\t%s\n", enabled(status
, 1));
4613 if (video_supported
== TPACPI_VIDEO_NEW
)
4614 seq_printf(m
, "dvi:\t\t%s\n", enabled(status
, 3));
4615 seq_printf(m
, "auto:\t\t%s\n", enabled(autosw
, 0));
4616 seq_printf(m
, "commands:\tlcd_enable, lcd_disable\n");
4617 seq_printf(m
, "commands:\tcrt_enable, crt_disable\n");
4618 if (video_supported
== TPACPI_VIDEO_NEW
)
4619 seq_printf(m
, "commands:\tdvi_enable, dvi_disable\n");
4620 seq_printf(m
, "commands:\tauto_enable, auto_disable\n");
4621 seq_printf(m
, "commands:\tvideo_switch, expand_toggle\n");
4626 static int video_write(char *buf
)
4629 int enable
, disable
, status
;
4632 if (video_supported
== TPACPI_VIDEO_NONE
)
4635 /* Even reads can crash X.org, let alone writes... */
4636 if (!capable(CAP_SYS_ADMIN
))
4642 while ((cmd
= next_cmd(&buf
))) {
4643 if (strlencmp(cmd
, "lcd_enable") == 0) {
4644 enable
|= TP_ACPI_VIDEO_S_LCD
;
4645 } else if (strlencmp(cmd
, "lcd_disable") == 0) {
4646 disable
|= TP_ACPI_VIDEO_S_LCD
;
4647 } else if (strlencmp(cmd
, "crt_enable") == 0) {
4648 enable
|= TP_ACPI_VIDEO_S_CRT
;
4649 } else if (strlencmp(cmd
, "crt_disable") == 0) {
4650 disable
|= TP_ACPI_VIDEO_S_CRT
;
4651 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
4652 strlencmp(cmd
, "dvi_enable") == 0) {
4653 enable
|= TP_ACPI_VIDEO_S_DVI
;
4654 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
4655 strlencmp(cmd
, "dvi_disable") == 0) {
4656 disable
|= TP_ACPI_VIDEO_S_DVI
;
4657 } else if (strlencmp(cmd
, "auto_enable") == 0) {
4658 res
= video_autosw_set(1);
4661 } else if (strlencmp(cmd
, "auto_disable") == 0) {
4662 res
= video_autosw_set(0);
4665 } else if (strlencmp(cmd
, "video_switch") == 0) {
4666 res
= video_outputsw_cycle();
4669 } else if (strlencmp(cmd
, "expand_toggle") == 0) {
4670 res
= video_expand_toggle();
4677 if (enable
|| disable
) {
4678 status
= video_outputsw_get();
4681 res
= video_outputsw_set((status
& ~disable
) | enable
);
4689 static struct ibm_struct video_driver_data
= {
4692 .write
= video_write
,
4696 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4698 /*************************************************************************
4699 * Light (thinklight) subdriver
4702 TPACPI_HANDLE(lght
, root
, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4703 TPACPI_HANDLE(ledb
, ec
, "LEDB"); /* G4x */
4705 static int light_get_status(void)
4709 if (tp_features
.light_status
) {
4710 if (!acpi_evalf(ec_handle
, &status
, "KBLT", "d"))
4718 static int light_set_status(int status
)
4722 if (tp_features
.light
) {
4724 rc
= acpi_evalf(cmos_handle
, NULL
, NULL
, "vd",
4726 TP_CMOS_THINKLIGHT_ON
:
4727 TP_CMOS_THINKLIGHT_OFF
);
4729 rc
= acpi_evalf(lght_handle
, NULL
, NULL
, "vd",
4732 return (rc
)? 0 : -EIO
;
4738 static void light_set_status_worker(struct work_struct
*work
)
4740 struct tpacpi_led_classdev
*data
=
4741 container_of(work
, struct tpacpi_led_classdev
, work
);
4743 if (likely(tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
))
4744 light_set_status((data
->new_state
!= TPACPI_LED_OFF
));
4747 static void light_sysfs_set(struct led_classdev
*led_cdev
,
4748 enum led_brightness brightness
)
4750 struct tpacpi_led_classdev
*data
=
4751 container_of(led_cdev
,
4752 struct tpacpi_led_classdev
,
4754 data
->new_state
= (brightness
!= LED_OFF
) ?
4755 TPACPI_LED_ON
: TPACPI_LED_OFF
;
4756 queue_work(tpacpi_wq
, &data
->work
);
4759 static enum led_brightness
light_sysfs_get(struct led_classdev
*led_cdev
)
4761 return (light_get_status() == 1)? LED_FULL
: LED_OFF
;
4764 static struct tpacpi_led_classdev tpacpi_led_thinklight
= {
4766 .name
= "tpacpi::thinklight",
4767 .brightness_set
= &light_sysfs_set
,
4768 .brightness_get
= &light_sysfs_get
,
4772 static int __init
light_init(struct ibm_init_struct
*iibm
)
4776 vdbg_printk(TPACPI_DBG_INIT
, "initializing light subdriver\n");
4778 if (tpacpi_is_ibm()) {
4779 TPACPI_ACPIHANDLE_INIT(ledb
);
4780 TPACPI_ACPIHANDLE_INIT(lght
);
4782 TPACPI_ACPIHANDLE_INIT(cmos
);
4783 INIT_WORK(&tpacpi_led_thinklight
.work
, light_set_status_worker
);
4785 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
4786 tp_features
.light
= (cmos_handle
|| lght_handle
) && !ledb_handle
;
4788 if (tp_features
.light
)
4789 /* light status not supported on
4790 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
4791 tp_features
.light_status
=
4792 acpi_evalf(ec_handle
, NULL
, "KBLT", "qv");
4794 vdbg_printk(TPACPI_DBG_INIT
, "light is %s, light status is %s\n",
4795 str_supported(tp_features
.light
),
4796 str_supported(tp_features
.light_status
));
4798 if (!tp_features
.light
)
4801 rc
= led_classdev_register(&tpacpi_pdev
->dev
,
4802 &tpacpi_led_thinklight
.led_classdev
);
4805 tp_features
.light
= 0;
4806 tp_features
.light_status
= 0;
4814 static void light_exit(void)
4816 led_classdev_unregister(&tpacpi_led_thinklight
.led_classdev
);
4817 if (work_pending(&tpacpi_led_thinklight
.work
))
4818 flush_workqueue(tpacpi_wq
);
4821 static int light_read(struct seq_file
*m
)
4825 if (!tp_features
.light
) {
4826 seq_printf(m
, "status:\t\tnot supported\n");
4827 } else if (!tp_features
.light_status
) {
4828 seq_printf(m
, "status:\t\tunknown\n");
4829 seq_printf(m
, "commands:\ton, off\n");
4831 status
= light_get_status();
4834 seq_printf(m
, "status:\t\t%s\n", onoff(status
, 0));
4835 seq_printf(m
, "commands:\ton, off\n");
4841 static int light_write(char *buf
)
4846 if (!tp_features
.light
)
4849 while ((cmd
= next_cmd(&buf
))) {
4850 if (strlencmp(cmd
, "on") == 0) {
4852 } else if (strlencmp(cmd
, "off") == 0) {
4858 return light_set_status(newstatus
);
4861 static struct ibm_struct light_driver_data
= {
4864 .write
= light_write
,
4868 /*************************************************************************
4872 /* sysfs cmos_command -------------------------------------------------- */
4873 static ssize_t
cmos_command_store(struct device
*dev
,
4874 struct device_attribute
*attr
,
4875 const char *buf
, size_t count
)
4877 unsigned long cmos_cmd
;
4880 if (parse_strtoul(buf
, 21, &cmos_cmd
))
4883 res
= issue_thinkpad_cmos_command(cmos_cmd
);
4884 return (res
)? res
: count
;
4887 static struct device_attribute dev_attr_cmos_command
=
4888 __ATTR(cmos_command
, S_IWUSR
, NULL
, cmos_command_store
);
4890 /* --------------------------------------------------------------------- */
4892 static int __init
cmos_init(struct ibm_init_struct
*iibm
)
4896 vdbg_printk(TPACPI_DBG_INIT
,
4897 "initializing cmos commands subdriver\n");
4899 TPACPI_ACPIHANDLE_INIT(cmos
);
4901 vdbg_printk(TPACPI_DBG_INIT
, "cmos commands are %s\n",
4902 str_supported(cmos_handle
!= NULL
));
4904 res
= device_create_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4908 return (cmos_handle
)? 0 : 1;
4911 static void cmos_exit(void)
4913 device_remove_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4916 static int cmos_read(struct seq_file
*m
)
4918 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4919 R30, R31, T20-22, X20-21 */
4921 seq_printf(m
, "status:\t\tnot supported\n");
4923 seq_printf(m
, "status:\t\tsupported\n");
4924 seq_printf(m
, "commands:\t<cmd> (<cmd> is 0-21)\n");
4930 static int cmos_write(char *buf
)
4935 while ((cmd
= next_cmd(&buf
))) {
4936 if (sscanf(cmd
, "%u", &cmos_cmd
) == 1 &&
4937 cmos_cmd
>= 0 && cmos_cmd
<= 21) {
4942 res
= issue_thinkpad_cmos_command(cmos_cmd
);
4950 static struct ibm_struct cmos_driver_data
= {
4953 .write
= cmos_write
,
4957 /*************************************************************************
4961 enum led_access_mode
{
4962 TPACPI_LED_NONE
= 0,
4963 TPACPI_LED_570
, /* 570 */
4964 TPACPI_LED_OLD
, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4965 TPACPI_LED_NEW
, /* all others */
4968 enum { /* For TPACPI_LED_OLD */
4969 TPACPI_LED_EC_HLCL
= 0x0c, /* EC reg to get led to power on */
4970 TPACPI_LED_EC_HLBL
= 0x0d, /* EC reg to blink a lit led */
4971 TPACPI_LED_EC_HLMS
= 0x0e, /* EC reg to select led to command */
4974 static enum led_access_mode led_supported
;
4976 TPACPI_HANDLE(led
, ec
, "SLED", /* 570 */
4977 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
4978 /* T20-22, X20-21 */
4979 "LED", /* all others */
4982 #define TPACPI_LED_NUMLEDS 16
4983 static struct tpacpi_led_classdev
*tpacpi_leds
;
4984 static enum led_status_t tpacpi_led_state_cache
[TPACPI_LED_NUMLEDS
];
4985 static const char * const tpacpi_led_names
[TPACPI_LED_NUMLEDS
] = {
4986 /* there's a limit of 19 chars + NULL before 2.6.26 */
4988 "tpacpi:orange:batt",
4989 "tpacpi:green:batt",
4990 "tpacpi::dock_active",
4991 "tpacpi::bay_active",
4992 "tpacpi::dock_batt",
4993 "tpacpi::unknown_led",
4995 "tpacpi::dock_status1",
4996 "tpacpi::dock_status2",
4997 "tpacpi::unknown_led2",
4998 "tpacpi::unknown_led3",
4999 "tpacpi::thinkvantage",
5001 #define TPACPI_SAFE_LEDS 0x1081U
5003 static inline bool tpacpi_is_led_restricted(const unsigned int led
)
5005 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5008 return (1U & (TPACPI_SAFE_LEDS
>> led
)) == 0;
5012 static int led_get_status(const unsigned int led
)
5015 enum led_status_t led_s
;
5017 switch (led_supported
) {
5018 case TPACPI_LED_570
:
5019 if (!acpi_evalf(ec_handle
,
5020 &status
, "GLED", "dd", 1 << led
))
5022 led_s
= (status
== 0)?
5027 tpacpi_led_state_cache
[led
] = led_s
;
5036 static int led_set_status(const unsigned int led
,
5037 const enum led_status_t ledstatus
)
5039 /* off, on, blink. Index is led_status_t */
5040 static const unsigned int led_sled_arg1
[] = { 0, 1, 3 };
5041 static const unsigned int led_led_arg1
[] = { 0, 0x80, 0xc0 };
5045 switch (led_supported
) {
5046 case TPACPI_LED_570
:
5048 if (unlikely(led
> 7))
5050 if (unlikely(tpacpi_is_led_restricted(led
)))
5052 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
5053 (1 << led
), led_sled_arg1
[ledstatus
]))
5056 case TPACPI_LED_OLD
:
5057 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
5058 if (unlikely(led
> 7))
5060 if (unlikely(tpacpi_is_led_restricted(led
)))
5062 rc
= ec_write(TPACPI_LED_EC_HLMS
, (1 << led
));
5064 rc
= ec_write(TPACPI_LED_EC_HLBL
,
5065 (ledstatus
== TPACPI_LED_BLINK
) << led
);
5067 rc
= ec_write(TPACPI_LED_EC_HLCL
,
5068 (ledstatus
!= TPACPI_LED_OFF
) << led
);
5070 case TPACPI_LED_NEW
:
5072 if (unlikely(led
>= TPACPI_LED_NUMLEDS
))
5074 if (unlikely(tpacpi_is_led_restricted(led
)))
5076 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
5077 led
, led_led_arg1
[ledstatus
]))
5085 tpacpi_led_state_cache
[led
] = ledstatus
;
5090 static void led_set_status_worker(struct work_struct
*work
)
5092 struct tpacpi_led_classdev
*data
=
5093 container_of(work
, struct tpacpi_led_classdev
, work
);
5095 if (likely(tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
))
5096 led_set_status(data
->led
, data
->new_state
);
5099 static void led_sysfs_set(struct led_classdev
*led_cdev
,
5100 enum led_brightness brightness
)
5102 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
5103 struct tpacpi_led_classdev
, led_classdev
);
5105 if (brightness
== LED_OFF
)
5106 data
->new_state
= TPACPI_LED_OFF
;
5107 else if (tpacpi_led_state_cache
[data
->led
] != TPACPI_LED_BLINK
)
5108 data
->new_state
= TPACPI_LED_ON
;
5110 data
->new_state
= TPACPI_LED_BLINK
;
5112 queue_work(tpacpi_wq
, &data
->work
);
5115 static int led_sysfs_blink_set(struct led_classdev
*led_cdev
,
5116 unsigned long *delay_on
, unsigned long *delay_off
)
5118 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
5119 struct tpacpi_led_classdev
, led_classdev
);
5121 /* Can we choose the flash rate? */
5122 if (*delay_on
== 0 && *delay_off
== 0) {
5123 /* yes. set them to the hardware blink rate (1 Hz) */
5124 *delay_on
= 500; /* ms */
5125 *delay_off
= 500; /* ms */
5126 } else if ((*delay_on
!= 500) || (*delay_off
!= 500))
5129 data
->new_state
= TPACPI_LED_BLINK
;
5130 queue_work(tpacpi_wq
, &data
->work
);
5135 static enum led_brightness
led_sysfs_get(struct led_classdev
*led_cdev
)
5139 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
5140 struct tpacpi_led_classdev
, led_classdev
);
5142 rc
= led_get_status(data
->led
);
5144 if (rc
== TPACPI_LED_OFF
|| rc
< 0)
5145 rc
= LED_OFF
; /* no error handling in led class :( */
5152 static void led_exit(void)
5156 for (i
= 0; i
< TPACPI_LED_NUMLEDS
; i
++) {
5157 if (tpacpi_leds
[i
].led_classdev
.name
)
5158 led_classdev_unregister(&tpacpi_leds
[i
].led_classdev
);
5164 static int __init
tpacpi_init_led(unsigned int led
)
5168 tpacpi_leds
[led
].led
= led
;
5170 /* LEDs with no name don't get registered */
5171 if (!tpacpi_led_names
[led
])
5174 tpacpi_leds
[led
].led_classdev
.brightness_set
= &led_sysfs_set
;
5175 tpacpi_leds
[led
].led_classdev
.blink_set
= &led_sysfs_blink_set
;
5176 if (led_supported
== TPACPI_LED_570
)
5177 tpacpi_leds
[led
].led_classdev
.brightness_get
=
5180 tpacpi_leds
[led
].led_classdev
.name
= tpacpi_led_names
[led
];
5182 INIT_WORK(&tpacpi_leds
[led
].work
, led_set_status_worker
);
5184 rc
= led_classdev_register(&tpacpi_pdev
->dev
,
5185 &tpacpi_leds
[led
].led_classdev
);
5187 tpacpi_leds
[led
].led_classdev
.name
= NULL
;
5192 static const struct tpacpi_quirk led_useful_qtable
[] __initconst
= {
5193 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5194 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5195 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5197 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5198 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5199 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5200 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5201 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5202 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5203 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5204 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5206 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5207 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5208 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5209 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5210 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5212 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5213 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5214 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5215 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5217 /* (1) - may have excess leds enabled on MSB */
5219 /* Defaults (order matters, keep last, don't reorder!) */
5221 .vendor
= PCI_VENDOR_ID_LENOVO
,
5222 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_ANY
,
5225 { /* IBM ThinkPads with no EC version string */
5226 .vendor
= PCI_VENDOR_ID_IBM
,
5227 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_UNKNOWN
,
5230 { /* IBM ThinkPads with EC version string */
5231 .vendor
= PCI_VENDOR_ID_IBM
,
5232 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_ANY
,
5237 #undef TPACPI_LEDQ_IBM
5238 #undef TPACPI_LEDQ_LNV
5240 static int __init
led_init(struct ibm_init_struct
*iibm
)
5244 unsigned long useful_leds
;
5246 vdbg_printk(TPACPI_DBG_INIT
, "initializing LED subdriver\n");
5248 TPACPI_ACPIHANDLE_INIT(led
);
5251 /* led not supported on R30, R31 */
5252 led_supported
= TPACPI_LED_NONE
;
5253 else if (tpacpi_is_ibm() && strlencmp(led_path
, "SLED") == 0)
5255 led_supported
= TPACPI_LED_570
;
5256 else if (tpacpi_is_ibm() && strlencmp(led_path
, "SYSL") == 0)
5257 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5258 led_supported
= TPACPI_LED_OLD
;
5261 led_supported
= TPACPI_LED_NEW
;
5263 vdbg_printk(TPACPI_DBG_INIT
, "LED commands are %s, mode %d\n",
5264 str_supported(led_supported
), led_supported
);
5266 if (led_supported
== TPACPI_LED_NONE
)
5269 tpacpi_leds
= kzalloc(sizeof(*tpacpi_leds
) * TPACPI_LED_NUMLEDS
,
5272 printk(TPACPI_ERR
"Out of memory for LED data\n");
5276 useful_leds
= tpacpi_check_quirks(led_useful_qtable
,
5277 ARRAY_SIZE(led_useful_qtable
));
5279 for (i
= 0; i
< TPACPI_LED_NUMLEDS
; i
++) {
5280 if (!tpacpi_is_led_restricted(i
) &&
5281 test_bit(i
, &useful_leds
)) {
5282 rc
= tpacpi_init_led(i
);
5290 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5291 printk(TPACPI_NOTICE
5292 "warning: userspace override of important "
5293 "firmware LEDs is enabled\n");
5298 #define str_led_status(s) \
5299 ((s) == TPACPI_LED_OFF ? "off" : \
5300 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
5302 static int led_read(struct seq_file
*m
)
5304 if (!led_supported
) {
5305 seq_printf(m
, "status:\t\tnot supported\n");
5308 seq_printf(m
, "status:\t\tsupported\n");
5310 if (led_supported
== TPACPI_LED_570
) {
5313 for (i
= 0; i
< 8; i
++) {
5314 status
= led_get_status(i
);
5317 seq_printf(m
, "%d:\t\t%s\n",
5318 i
, str_led_status(status
));
5322 seq_printf(m
, "commands:\t"
5323 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
5328 static int led_write(char *buf
)
5332 enum led_status_t s
;
5337 while ((cmd
= next_cmd(&buf
))) {
5338 if (sscanf(cmd
, "%d", &led
) != 1 || led
< 0 || led
> 15)
5341 if (strstr(cmd
, "off")) {
5343 } else if (strstr(cmd
, "on")) {
5345 } else if (strstr(cmd
, "blink")) {
5346 s
= TPACPI_LED_BLINK
;
5351 rc
= led_set_status(led
, s
);
5359 static struct ibm_struct led_driver_data
= {
5366 /*************************************************************************
5370 TPACPI_HANDLE(beep
, ec
, "BEEP"); /* all except R30, R31 */
5372 #define TPACPI_BEEP_Q1 0x0001
5374 static const struct tpacpi_quirk beep_quirk_table
[] __initconst
= {
5375 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1
), /* 570 */
5376 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1
), /* 570E - unverified */
5379 static int __init
beep_init(struct ibm_init_struct
*iibm
)
5381 unsigned long quirks
;
5383 vdbg_printk(TPACPI_DBG_INIT
, "initializing beep subdriver\n");
5385 TPACPI_ACPIHANDLE_INIT(beep
);
5387 vdbg_printk(TPACPI_DBG_INIT
, "beep is %s\n",
5388 str_supported(beep_handle
!= NULL
));
5390 quirks
= tpacpi_check_quirks(beep_quirk_table
,
5391 ARRAY_SIZE(beep_quirk_table
));
5393 tp_features
.beep_needs_two_args
= !!(quirks
& TPACPI_BEEP_Q1
);
5395 return (beep_handle
)? 0 : 1;
5398 static int beep_read(struct seq_file
*m
)
5401 seq_printf(m
, "status:\t\tnot supported\n");
5403 seq_printf(m
, "status:\t\tsupported\n");
5404 seq_printf(m
, "commands:\t<cmd> (<cmd> is 0-17)\n");
5410 static int beep_write(char *buf
)
5418 while ((cmd
= next_cmd(&buf
))) {
5419 if (sscanf(cmd
, "%u", &beep_cmd
) == 1 &&
5420 beep_cmd
>= 0 && beep_cmd
<= 17) {
5424 if (tp_features
.beep_needs_two_args
) {
5425 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vdd",
5429 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vd",
5438 static struct ibm_struct beep_driver_data
= {
5441 .write
= beep_write
,
5444 /*************************************************************************
5448 enum thermal_access_mode
{
5449 TPACPI_THERMAL_NONE
= 0, /* No thermal support */
5450 TPACPI_THERMAL_ACPI_TMP07
, /* Use ACPI TMP0-7 */
5451 TPACPI_THERMAL_ACPI_UPDT
, /* Use ACPI TMP0-7 with UPDT */
5452 TPACPI_THERMAL_TPEC_8
, /* Use ACPI EC regs, 8 sensors */
5453 TPACPI_THERMAL_TPEC_16
, /* Use ACPI EC regs, 16 sensors */
5456 enum { /* TPACPI_THERMAL_TPEC_* */
5457 TP_EC_THERMAL_TMP0
= 0x78, /* ACPI EC regs TMP 0..7 */
5458 TP_EC_THERMAL_TMP8
= 0xC0, /* ACPI EC regs TMP 8..15 */
5459 TP_EC_THERMAL_TMP_NA
= -128, /* ACPI EC sensor not available */
5461 TPACPI_THERMAL_SENSOR_NA
= -128000, /* Sensor not available */
5465 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5466 struct ibm_thermal_sensors_struct
{
5467 s32 temp
[TPACPI_MAX_THERMAL_SENSORS
];
5470 static enum thermal_access_mode thermal_read_mode
;
5472 /* idx is zero-based */
5473 static int thermal_get_sensor(int idx
, s32
*value
)
5479 t
= TP_EC_THERMAL_TMP0
;
5481 switch (thermal_read_mode
) {
5482 #if TPACPI_MAX_THERMAL_SENSORS >= 16
5483 case TPACPI_THERMAL_TPEC_16
:
5484 if (idx
>= 8 && idx
<= 15) {
5485 t
= TP_EC_THERMAL_TMP8
;
5490 case TPACPI_THERMAL_TPEC_8
:
5492 if (!acpi_ec_read(t
+ idx
, &tmp
))
5494 *value
= tmp
* 1000;
5499 case TPACPI_THERMAL_ACPI_UPDT
:
5501 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
5502 if (!acpi_evalf(ec_handle
, NULL
, "UPDT", "v"))
5504 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
5506 *value
= (t
- 2732) * 100;
5511 case TPACPI_THERMAL_ACPI_TMP07
:
5513 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
5514 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
5516 if (t
> 127 || t
< -127)
5517 t
= TP_EC_THERMAL_TMP_NA
;
5523 case TPACPI_THERMAL_NONE
:
5531 static int thermal_get_sensors(struct ibm_thermal_sensors_struct
*s
)
5542 if (thermal_read_mode
== TPACPI_THERMAL_TPEC_16
)
5545 for (i
= 0 ; i
< n
; i
++) {
5546 res
= thermal_get_sensor(i
, &s
->temp
[i
]);
5554 static void thermal_dump_all_sensors(void)
5557 struct ibm_thermal_sensors_struct t
;
5559 n
= thermal_get_sensors(&t
);
5563 printk(TPACPI_NOTICE
5564 "temperatures (Celsius):");
5566 for (i
= 0; i
< n
; i
++) {
5567 if (t
.temp
[i
] != TPACPI_THERMAL_SENSOR_NA
)
5568 printk(KERN_CONT
" %d", (int)(t
.temp
[i
] / 1000));
5570 printk(KERN_CONT
" N/A");
5573 printk(KERN_CONT
"\n");
5576 /* sysfs temp##_input -------------------------------------------------- */
5578 static ssize_t
thermal_temp_input_show(struct device
*dev
,
5579 struct device_attribute
*attr
,
5582 struct sensor_device_attribute
*sensor_attr
=
5583 to_sensor_dev_attr(attr
);
5584 int idx
= sensor_attr
->index
;
5588 res
= thermal_get_sensor(idx
, &value
);
5591 if (value
== TPACPI_THERMAL_SENSOR_NA
)
5594 return snprintf(buf
, PAGE_SIZE
, "%d\n", value
);
5597 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
5598 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5599 thermal_temp_input_show, NULL, _idxB)
5601 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input
[] = {
5602 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5603 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5604 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5605 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5606 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5607 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5608 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5609 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5610 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5611 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5612 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5613 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5614 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5615 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5616 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5617 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5620 #define THERMAL_ATTRS(X) \
5621 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5623 static struct attribute
*thermal_temp_input_attr
[] = {
5643 static const struct attribute_group thermal_temp_input16_group
= {
5644 .attrs
= thermal_temp_input_attr
5647 static const struct attribute_group thermal_temp_input8_group
= {
5648 .attrs
= &thermal_temp_input_attr
[8]
5651 #undef THERMAL_SENSOR_ATTR_TEMP
5652 #undef THERMAL_ATTRS
5654 /* --------------------------------------------------------------------- */
5656 static int __init
thermal_init(struct ibm_init_struct
*iibm
)
5663 vdbg_printk(TPACPI_DBG_INIT
, "initializing thermal subdriver\n");
5665 acpi_tmp7
= acpi_evalf(ec_handle
, NULL
, "TMP7", "qv");
5667 if (thinkpad_id
.ec_model
) {
5669 * Direct EC access mode: sensors at registers
5670 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5671 * non-implemented, thermal sensors return 0x80 when
5676 for (i
= 0; i
< 8; i
++) {
5677 if (acpi_ec_read(TP_EC_THERMAL_TMP0
+ i
, &t
)) {
5683 if (acpi_ec_read(TP_EC_THERMAL_TMP8
+ i
, &t
)) {
5691 /* This is sheer paranoia, but we handle it anyway */
5694 "ThinkPad ACPI EC access misbehaving, "
5695 "falling back to ACPI TMPx access "
5697 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5700 "ThinkPad ACPI EC access misbehaving, "
5701 "disabling thermal sensors access\n");
5702 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5707 TPACPI_THERMAL_TPEC_16
: TPACPI_THERMAL_TPEC_8
;
5709 } else if (acpi_tmp7
) {
5710 if (tpacpi_is_ibm() &&
5711 acpi_evalf(ec_handle
, NULL
, "UPDT", "qv")) {
5712 /* 600e/x, 770e, 770x */
5713 thermal_read_mode
= TPACPI_THERMAL_ACPI_UPDT
;
5715 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
5716 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5719 /* temperatures not supported on 570, G4x, R30, R31, R32 */
5720 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5723 vdbg_printk(TPACPI_DBG_INIT
, "thermal is %s, mode %d\n",
5724 str_supported(thermal_read_mode
!= TPACPI_THERMAL_NONE
),
5727 switch (thermal_read_mode
) {
5728 case TPACPI_THERMAL_TPEC_16
:
5729 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5730 &thermal_temp_input16_group
);
5734 case TPACPI_THERMAL_TPEC_8
:
5735 case TPACPI_THERMAL_ACPI_TMP07
:
5736 case TPACPI_THERMAL_ACPI_UPDT
:
5737 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5738 &thermal_temp_input8_group
);
5742 case TPACPI_THERMAL_NONE
:
5750 static void thermal_exit(void)
5752 switch (thermal_read_mode
) {
5753 case TPACPI_THERMAL_TPEC_16
:
5754 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5755 &thermal_temp_input16_group
);
5757 case TPACPI_THERMAL_TPEC_8
:
5758 case TPACPI_THERMAL_ACPI_TMP07
:
5759 case TPACPI_THERMAL_ACPI_UPDT
:
5760 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5761 &thermal_temp_input8_group
);
5763 case TPACPI_THERMAL_NONE
:
5769 static int thermal_read(struct seq_file
*m
)
5772 struct ibm_thermal_sensors_struct t
;
5774 n
= thermal_get_sensors(&t
);
5775 if (unlikely(n
< 0))
5778 seq_printf(m
, "temperatures:\t");
5781 for (i
= 0; i
< (n
- 1); i
++)
5782 seq_printf(m
, "%d ", t
.temp
[i
] / 1000);
5783 seq_printf(m
, "%d\n", t
.temp
[i
] / 1000);
5785 seq_printf(m
, "not supported\n");
5790 static struct ibm_struct thermal_driver_data
= {
5792 .read
= thermal_read
,
5793 .exit
= thermal_exit
,
5796 /*************************************************************************
5800 static u8 ecdump_regs
[256];
5802 static int ecdump_read(struct seq_file
*m
)
5808 " +00 +01 +02 +03 +04 +05 +06 +07"
5809 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5810 for (i
= 0; i
< 256; i
+= 16) {
5811 seq_printf(m
, "EC 0x%02x:", i
);
5812 for (j
= 0; j
< 16; j
++) {
5813 if (!acpi_ec_read(i
+ j
, &v
))
5815 if (v
!= ecdump_regs
[i
+ j
])
5816 seq_printf(m
, " *%02x", v
);
5818 seq_printf(m
, " %02x", v
);
5819 ecdump_regs
[i
+ j
] = v
;
5826 /* These are way too dangerous to advertise openly... */
5828 seq_printf(m
, "commands:\t0x<offset> 0x<value>"
5829 " (<offset> is 00-ff, <value> is 00-ff)\n");
5830 seq_printf(m
, "commands:\t0x<offset> <value> "
5831 " (<offset> is 00-ff, <value> is 0-255)\n");
5836 static int ecdump_write(char *buf
)
5841 while ((cmd
= next_cmd(&buf
))) {
5842 if (sscanf(cmd
, "0x%x 0x%x", &i
, &v
) == 2) {
5844 } else if (sscanf(cmd
, "0x%x %u", &i
, &v
) == 2) {
5848 if (i
>= 0 && i
< 256 && v
>= 0 && v
< 256) {
5849 if (!acpi_ec_write(i
, v
))
5858 static struct ibm_struct ecdump_driver_data
= {
5860 .read
= ecdump_read
,
5861 .write
= ecdump_write
,
5862 .flags
.experimental
= 1,
5865 /*************************************************************************
5866 * Backlight/brightness subdriver
5869 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5872 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5873 * CMOS NVRAM byte 0x5E, bits 0-3.
5875 * EC HBRV (0x31) has the following layout
5876 * Bit 7: unknown function
5877 * Bit 6: unknown function
5878 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5879 * Bit 4: must be set to zero to avoid problems
5880 * Bit 3-0: backlight brightness level
5882 * brightness_get_raw returns status data in the HBRV layout
5884 * WARNING: The X61 has been verified to use HBRV for something else, so
5885 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
5886 * testing on the very early *60 Lenovo models...
5890 TP_EC_BACKLIGHT
= 0x31,
5892 /* TP_EC_BACKLIGHT bitmasks */
5893 TP_EC_BACKLIGHT_LVLMSK
= 0x1F,
5894 TP_EC_BACKLIGHT_CMDMSK
= 0xE0,
5895 TP_EC_BACKLIGHT_MAPSW
= 0x20,
5898 enum tpacpi_brightness_access_mode
{
5899 TPACPI_BRGHT_MODE_AUTO
= 0, /* Not implemented yet */
5900 TPACPI_BRGHT_MODE_EC
, /* EC control */
5901 TPACPI_BRGHT_MODE_UCMS_STEP
, /* UCMS step-based control */
5902 TPACPI_BRGHT_MODE_ECNVRAM
, /* EC control w/ NVRAM store */
5903 TPACPI_BRGHT_MODE_MAX
5906 static struct backlight_device
*ibm_backlight_device
;
5908 static enum tpacpi_brightness_access_mode brightness_mode
=
5909 TPACPI_BRGHT_MODE_MAX
;
5911 static unsigned int brightness_enable
= 2; /* 2 = auto, 0 = no, 1 = yes */
5913 static struct mutex brightness_mutex
;
5915 /* NVRAM brightness access,
5916 * call with brightness_mutex held! */
5917 static unsigned int tpacpi_brightness_nvram_get(void)
5921 lnvram
= (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
)
5922 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
5923 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
5924 lnvram
&= bright_maxlvl
;
5929 static void tpacpi_brightness_checkpoint_nvram(void)
5934 if (brightness_mode
!= TPACPI_BRGHT_MODE_ECNVRAM
)
5937 vdbg_printk(TPACPI_DBG_BRGHT
,
5938 "trying to checkpoint backlight level to NVRAM...\n");
5940 if (mutex_lock_killable(&brightness_mutex
) < 0)
5943 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
5945 lec
&= TP_EC_BACKLIGHT_LVLMSK
;
5946 b_nvram
= nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
);
5948 if (lec
!= ((b_nvram
& TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
5949 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
)) {
5950 /* NVRAM needs update */
5951 b_nvram
&= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS
<<
5952 TP_NVRAM_POS_LEVEL_BRIGHTNESS
);
5954 nvram_write_byte(b_nvram
, TP_NVRAM_ADDR_BRIGHTNESS
);
5955 dbg_printk(TPACPI_DBG_BRGHT
,
5956 "updated NVRAM backlight level to %u (0x%02x)\n",
5957 (unsigned int) lec
, (unsigned int) b_nvram
);
5959 vdbg_printk(TPACPI_DBG_BRGHT
,
5960 "NVRAM backlight level already is %u (0x%02x)\n",
5961 (unsigned int) lec
, (unsigned int) b_nvram
);
5964 mutex_unlock(&brightness_mutex
);
5968 /* call with brightness_mutex held! */
5969 static int tpacpi_brightness_get_raw(int *status
)
5973 switch (brightness_mode
) {
5974 case TPACPI_BRGHT_MODE_UCMS_STEP
:
5975 *status
= tpacpi_brightness_nvram_get();
5977 case TPACPI_BRGHT_MODE_EC
:
5978 case TPACPI_BRGHT_MODE_ECNVRAM
:
5979 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
5988 /* call with brightness_mutex held! */
5989 /* do NOT call with illegal backlight level value */
5990 static int tpacpi_brightness_set_ec(unsigned int value
)
5994 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
5997 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT
,
5998 (lec
& TP_EC_BACKLIGHT_CMDMSK
) |
5999 (value
& TP_EC_BACKLIGHT_LVLMSK
))))
6005 /* call with brightness_mutex held! */
6006 static int tpacpi_brightness_set_ucmsstep(unsigned int value
)
6009 unsigned int current_value
, i
;
6011 current_value
= tpacpi_brightness_nvram_get();
6013 if (value
== current_value
)
6016 cmos_cmd
= (value
> current_value
) ?
6017 TP_CMOS_BRIGHTNESS_UP
:
6018 TP_CMOS_BRIGHTNESS_DOWN
;
6019 inc
= (value
> current_value
) ? 1 : -1;
6021 for (i
= current_value
; i
!= value
; i
+= inc
)
6022 if (issue_thinkpad_cmos_command(cmos_cmd
))
6028 /* May return EINTR which can always be mapped to ERESTARTSYS */
6029 static int brightness_set(unsigned int value
)
6033 if (value
> bright_maxlvl
|| value
< 0)
6036 vdbg_printk(TPACPI_DBG_BRGHT
,
6037 "set backlight level to %d\n", value
);
6039 res
= mutex_lock_killable(&brightness_mutex
);
6043 switch (brightness_mode
) {
6044 case TPACPI_BRGHT_MODE_EC
:
6045 case TPACPI_BRGHT_MODE_ECNVRAM
:
6046 res
= tpacpi_brightness_set_ec(value
);
6048 case TPACPI_BRGHT_MODE_UCMS_STEP
:
6049 res
= tpacpi_brightness_set_ucmsstep(value
);
6055 mutex_unlock(&brightness_mutex
);
6059 /* sysfs backlight class ----------------------------------------------- */
6061 static int brightness_update_status(struct backlight_device
*bd
)
6063 unsigned int level
=
6064 (bd
->props
.fb_blank
== FB_BLANK_UNBLANK
&&
6065 bd
->props
.power
== FB_BLANK_UNBLANK
) ?
6066 bd
->props
.brightness
: 0;
6068 dbg_printk(TPACPI_DBG_BRGHT
,
6069 "backlight: attempt to set level to %d\n",
6072 /* it is the backlight class's job (caller) to handle
6073 * EINTR and other errors properly */
6074 return brightness_set(level
);
6077 static int brightness_get(struct backlight_device
*bd
)
6081 res
= mutex_lock_killable(&brightness_mutex
);
6085 res
= tpacpi_brightness_get_raw(&status
);
6087 mutex_unlock(&brightness_mutex
);
6092 return status
& TP_EC_BACKLIGHT_LVLMSK
;
6095 static void tpacpi_brightness_notify_change(void)
6097 backlight_force_update(ibm_backlight_device
,
6098 BACKLIGHT_UPDATE_HOTKEY
);
6101 static struct backlight_ops ibm_backlight_data
= {
6102 .get_brightness
= brightness_get
,
6103 .update_status
= brightness_update_status
,
6106 /* --------------------------------------------------------------------- */
6108 static int __init
tpacpi_query_bcl_levels(acpi_handle handle
)
6110 struct acpi_buffer buffer
= { ACPI_ALLOCATE_BUFFER
, NULL
};
6111 union acpi_object
*obj
;
6114 if (ACPI_SUCCESS(acpi_evaluate_object(handle
, NULL
, NULL
, &buffer
))) {
6115 obj
= (union acpi_object
*)buffer
.pointer
;
6116 if (!obj
|| (obj
->type
!= ACPI_TYPE_PACKAGE
)) {
6117 printk(TPACPI_ERR
"Unknown _BCL data, "
6118 "please report this to %s\n", TPACPI_MAIL
);
6121 rc
= obj
->package
.count
;
6127 kfree(buffer
.pointer
);
6131 static acpi_status __init
tpacpi_acpi_walk_find_bcl(acpi_handle handle
,
6132 u32 lvl
, void *context
, void **rv
)
6134 char name
[ACPI_PATH_SEGMENT_LENGTH
];
6135 struct acpi_buffer buffer
= { sizeof(name
), &name
};
6137 if (ACPI_SUCCESS(acpi_get_name(handle
, ACPI_SINGLE_NAME
, &buffer
)) &&
6138 !strncmp("_BCL", name
, sizeof(name
) - 1)) {
6139 BUG_ON(!rv
|| !*rv
);
6140 **(int **)rv
= tpacpi_query_bcl_levels(handle
);
6141 return AE_CTRL_TERMINATE
;
6148 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
6150 static unsigned int __init
tpacpi_check_std_acpi_brightness_support(void)
6154 void *bcl_ptr
= &bcl_levels
;
6157 TPACPI_ACPIHANDLE_INIT(vid
);
6163 * Search for a _BCL method, and execute it. This is safe on all
6164 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
6165 * BIOS in ACPI backlight control mode. We do NOT have to care
6166 * about calling the _BCL method in an enabled video device, any
6167 * will do for our purposes.
6170 status
= acpi_walk_namespace(ACPI_TYPE_METHOD
, vid_handle
, 3,
6171 tpacpi_acpi_walk_find_bcl
, NULL
,
6174 if (ACPI_SUCCESS(status
) && bcl_levels
> 2) {
6175 tp_features
.bright_acpimode
= 1;
6176 return bcl_levels
- 2;
6183 * These are only useful for models that have only one possibility
6184 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6187 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6188 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6189 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6191 static const struct tpacpi_quirk brightness_quirk_table
[] __initconst
= {
6192 /* Models with ATI GPUs known to require ECNVRAM mode */
6193 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC
), /* T43/p ATI */
6195 /* Models with ATI GPUs that can use ECNVRAM */
6196 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC
), /* R50,51 T40-42 */
6197 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6198 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC
), /* R52 */
6199 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6201 /* Models with Intel Extreme Graphics 2 */
6202 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC
), /* X40 */
6203 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6204 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6206 /* Models with Intel GMA900 */
6207 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC
), /* T43, R52 */
6208 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC
), /* X41 */
6209 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC
), /* X41 Tablet */
6213 * Returns < 0 for error, otherwise sets tp_features.bright_*
6214 * and bright_maxlvl.
6216 static void __init
tpacpi_detect_brightness_capabilities(void)
6220 vdbg_printk(TPACPI_DBG_INIT
,
6221 "detecting firmware brightness interface capabilities\n");
6223 /* we could run a quirks check here (same table used by
6224 * brightness_init) if needed */
6227 * We always attempt to detect acpi support, so as to switch
6228 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6229 * going to publish a backlight interface
6231 b
= tpacpi_check_std_acpi_brightness_support();
6236 "detected a 16-level brightness capable ThinkPad\n");
6242 "detected a 8-level brightness capable ThinkPad\n");
6246 "Unsupported brightness interface, "
6247 "please contact %s\n", TPACPI_MAIL
);
6248 tp_features
.bright_unkfw
= 1;
6249 bright_maxlvl
= b
- 1;
6253 static int __init
brightness_init(struct ibm_init_struct
*iibm
)
6256 unsigned long quirks
;
6258 vdbg_printk(TPACPI_DBG_INIT
, "initializing brightness subdriver\n");
6260 mutex_init(&brightness_mutex
);
6262 quirks
= tpacpi_check_quirks(brightness_quirk_table
,
6263 ARRAY_SIZE(brightness_quirk_table
));
6265 /* tpacpi_detect_brightness_capabilities() must have run already */
6267 /* if it is unknown, we don't handle it: it wouldn't be safe */
6268 if (tp_features
.bright_unkfw
)
6271 if (tp_features
.bright_acpimode
) {
6272 if (acpi_video_backlight_support()) {
6273 if (brightness_enable
> 1) {
6274 printk(TPACPI_NOTICE
6275 "Standard ACPI backlight interface "
6276 "available, not loading native one.\n");
6278 } else if (brightness_enable
== 1) {
6279 printk(TPACPI_NOTICE
6280 "Backlight control force enabled, even if standard "
6281 "ACPI backlight interface is available\n");
6284 if (brightness_enable
> 1) {
6285 printk(TPACPI_NOTICE
6286 "Standard ACPI backlight interface not "
6287 "available, thinkpad_acpi native "
6288 "brightness control enabled\n");
6293 if (!brightness_enable
) {
6294 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_BRGHT
,
6295 "brightness support disabled by "
6296 "module parameter\n");
6301 * Check for module parameter bogosity, note that we
6302 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6303 * able to detect "unspecified"
6305 if (brightness_mode
> TPACPI_BRGHT_MODE_MAX
)
6308 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6309 if (brightness_mode
== TPACPI_BRGHT_MODE_AUTO
||
6310 brightness_mode
== TPACPI_BRGHT_MODE_MAX
) {
6311 if (quirks
& TPACPI_BRGHT_Q_EC
)
6312 brightness_mode
= TPACPI_BRGHT_MODE_ECNVRAM
;
6314 brightness_mode
= TPACPI_BRGHT_MODE_UCMS_STEP
;
6316 dbg_printk(TPACPI_DBG_BRGHT
,
6317 "driver auto-selected brightness_mode=%d\n",
6322 if (!tpacpi_is_ibm() &&
6323 (brightness_mode
== TPACPI_BRGHT_MODE_ECNVRAM
||
6324 brightness_mode
== TPACPI_BRGHT_MODE_EC
))
6327 if (tpacpi_brightness_get_raw(&b
) < 0)
6330 ibm_backlight_device
= backlight_device_register(
6331 TPACPI_BACKLIGHT_DEV_NAME
, NULL
, NULL
,
6332 &ibm_backlight_data
);
6333 if (IS_ERR(ibm_backlight_device
)) {
6334 int rc
= PTR_ERR(ibm_backlight_device
);
6335 ibm_backlight_device
= NULL
;
6336 printk(TPACPI_ERR
"Could not register backlight device\n");
6339 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_BRGHT
,
6340 "brightness is supported\n");
6342 if (quirks
& TPACPI_BRGHT_Q_ASK
) {
6343 printk(TPACPI_NOTICE
6344 "brightness: will use unverified default: "
6345 "brightness_mode=%d\n", brightness_mode
);
6346 printk(TPACPI_NOTICE
6347 "brightness: please report to %s whether it works well "
6348 "or not on your ThinkPad\n", TPACPI_MAIL
);
6351 ibm_backlight_device
->props
.max_brightness
= bright_maxlvl
;
6352 ibm_backlight_device
->props
.brightness
= b
& TP_EC_BACKLIGHT_LVLMSK
;
6353 backlight_update_status(ibm_backlight_device
);
6355 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_BRGHT
,
6356 "brightness: registering brightness hotkeys "
6357 "as change notification\n");
6358 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6359 | TP_ACPI_HKEY_BRGHTUP_MASK
6360 | TP_ACPI_HKEY_BRGHTDWN_MASK
);;
6364 static void brightness_suspend(pm_message_t state
)
6366 tpacpi_brightness_checkpoint_nvram();
6369 static void brightness_shutdown(void)
6371 tpacpi_brightness_checkpoint_nvram();
6374 static void brightness_exit(void)
6376 if (ibm_backlight_device
) {
6377 vdbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_BRGHT
,
6378 "calling backlight_device_unregister()\n");
6379 backlight_device_unregister(ibm_backlight_device
);
6382 tpacpi_brightness_checkpoint_nvram();
6385 static int brightness_read(struct seq_file
*m
)
6389 level
= brightness_get(NULL
);
6391 seq_printf(m
, "level:\t\tunreadable\n");
6393 seq_printf(m
, "level:\t\t%d\n", level
);
6394 seq_printf(m
, "commands:\tup, down\n");
6395 seq_printf(m
, "commands:\tlevel <level> (<level> is 0-%d)\n",
6402 static int brightness_write(char *buf
)
6408 level
= brightness_get(NULL
);
6412 while ((cmd
= next_cmd(&buf
))) {
6413 if (strlencmp(cmd
, "up") == 0) {
6414 if (level
< bright_maxlvl
)
6416 } else if (strlencmp(cmd
, "down") == 0) {
6419 } else if (sscanf(cmd
, "level %d", &level
) == 1 &&
6420 level
>= 0 && level
<= bright_maxlvl
) {
6426 tpacpi_disclose_usertask("procfs brightness",
6427 "set level to %d\n", level
);
6430 * Now we know what the final level should be, so we try to set it.
6431 * Doing it this way makes the syscall restartable in case of EINTR
6433 rc
= brightness_set(level
);
6434 if (!rc
&& ibm_backlight_device
)
6435 backlight_force_update(ibm_backlight_device
,
6436 BACKLIGHT_UPDATE_SYSFS
);
6437 return (rc
== -EINTR
)? -ERESTARTSYS
: rc
;
6440 static struct ibm_struct brightness_driver_data
= {
6441 .name
= "brightness",
6442 .read
= brightness_read
,
6443 .write
= brightness_write
,
6444 .exit
= brightness_exit
,
6445 .suspend
= brightness_suspend
,
6446 .shutdown
= brightness_shutdown
,
6449 /*************************************************************************
6454 * IBM ThinkPads have a simple volume controller with MUTE gating.
6455 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
6457 * Since the *61 series (and probably also the later *60 series), Lenovo
6458 * ThinkPads only implement the MUTE gate.
6461 * Bit 6: MUTE (1 mutes sound)
6463 * Other bits should be zero as far as we know.
6465 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
6466 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
6467 * such as bit 7 which is used to detect repeated presses of MUTE,
6468 * and we leave them unchanged.
6471 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
6473 #define TPACPI_ALSA_DRVNAME "ThinkPad EC"
6474 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
6475 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
6477 static int alsa_index
= ~((1 << (SNDRV_CARDS
- 3)) - 1); /* last three slots */
6478 static char *alsa_id
= "ThinkPadEC";
6479 static int alsa_enable
= SNDRV_DEFAULT_ENABLE1
;
6481 struct tpacpi_alsa_data
{
6482 struct snd_card
*card
;
6483 struct snd_ctl_elem_id
*ctl_mute_id
;
6484 struct snd_ctl_elem_id
*ctl_vol_id
;
6487 static struct snd_card
*alsa_card
;
6492 /* TP_EC_AUDIO bits */
6493 TP_EC_AUDIO_MUTESW
= 6,
6495 /* TP_EC_AUDIO bitmasks */
6496 TP_EC_AUDIO_LVL_MSK
= 0x0F,
6497 TP_EC_AUDIO_MUTESW_MSK
= (1 << TP_EC_AUDIO_MUTESW
),
6499 /* Maximum volume */
6500 TP_EC_VOLUME_MAX
= 14,
6503 enum tpacpi_volume_access_mode
{
6504 TPACPI_VOL_MODE_AUTO
= 0, /* Not implemented yet */
6505 TPACPI_VOL_MODE_EC
, /* Pure EC control */
6506 TPACPI_VOL_MODE_UCMS_STEP
, /* UCMS step-based control: N/A */
6507 TPACPI_VOL_MODE_ECNVRAM
, /* EC control w/ NVRAM store */
6511 enum tpacpi_volume_capabilities
{
6512 TPACPI_VOL_CAP_AUTO
= 0, /* Use white/blacklist */
6513 TPACPI_VOL_CAP_VOLMUTE
, /* Output vol and mute */
6514 TPACPI_VOL_CAP_MUTEONLY
, /* Output mute only */
6518 static enum tpacpi_volume_access_mode volume_mode
=
6519 TPACPI_VOL_MODE_MAX
;
6521 static enum tpacpi_volume_capabilities volume_capabilities
;
6522 static int volume_control_allowed
;
6525 * Used to syncronize writers to TP_EC_AUDIO and
6526 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
6528 static struct mutex volume_mutex
;
6530 static void tpacpi_volume_checkpoint_nvram(void)
6536 if (volume_mode
!= TPACPI_VOL_MODE_ECNVRAM
)
6538 if (!volume_control_allowed
)
6541 vdbg_printk(TPACPI_DBG_MIXER
,
6542 "trying to checkpoint mixer state to NVRAM...\n");
6544 if (tp_features
.mixer_no_level_control
)
6545 ec_mask
= TP_EC_AUDIO_MUTESW_MSK
;
6547 ec_mask
= TP_EC_AUDIO_MUTESW_MSK
| TP_EC_AUDIO_LVL_MSK
;
6549 if (mutex_lock_killable(&volume_mutex
) < 0)
6552 if (unlikely(!acpi_ec_read(TP_EC_AUDIO
, &lec
)))
6555 b_nvram
= nvram_read_byte(TP_NVRAM_ADDR_MIXER
);
6557 if (lec
!= (b_nvram
& ec_mask
)) {
6558 /* NVRAM needs update */
6559 b_nvram
&= ~ec_mask
;
6561 nvram_write_byte(b_nvram
, TP_NVRAM_ADDR_MIXER
);
6562 dbg_printk(TPACPI_DBG_MIXER
,
6563 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
6564 (unsigned int) lec
, (unsigned int) b_nvram
);
6566 vdbg_printk(TPACPI_DBG_MIXER
,
6567 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
6568 (unsigned int) lec
, (unsigned int) b_nvram
);
6572 mutex_unlock(&volume_mutex
);
6575 static int volume_get_status_ec(u8
*status
)
6579 if (!acpi_ec_read(TP_EC_AUDIO
, &s
))
6584 dbg_printk(TPACPI_DBG_MIXER
, "status 0x%02x\n", s
);
6589 static int volume_get_status(u8
*status
)
6591 return volume_get_status_ec(status
);
6594 static int volume_set_status_ec(const u8 status
)
6596 if (!acpi_ec_write(TP_EC_AUDIO
, status
))
6599 dbg_printk(TPACPI_DBG_MIXER
, "set EC mixer to 0x%02x\n", status
);
6604 static int volume_set_status(const u8 status
)
6606 return volume_set_status_ec(status
);
6609 /* returns < 0 on error, 0 on no change, 1 on change */
6610 static int __volume_set_mute_ec(const bool mute
)
6615 if (mutex_lock_killable(&volume_mutex
) < 0)
6618 rc
= volume_get_status_ec(&s
);
6622 n
= (mute
) ? s
| TP_EC_AUDIO_MUTESW_MSK
:
6623 s
& ~TP_EC_AUDIO_MUTESW_MSK
;
6626 rc
= volume_set_status_ec(n
);
6632 mutex_unlock(&volume_mutex
);
6636 static int volume_alsa_set_mute(const bool mute
)
6638 dbg_printk(TPACPI_DBG_MIXER
, "ALSA: trying to %smute\n",
6639 (mute
) ? "" : "un");
6640 return __volume_set_mute_ec(mute
);
6643 static int volume_set_mute(const bool mute
)
6647 dbg_printk(TPACPI_DBG_MIXER
, "trying to %smute\n",
6648 (mute
) ? "" : "un");
6650 rc
= __volume_set_mute_ec(mute
);
6651 return (rc
< 0) ? rc
: 0;
6654 /* returns < 0 on error, 0 on no change, 1 on change */
6655 static int __volume_set_volume_ec(const u8 vol
)
6660 if (vol
> TP_EC_VOLUME_MAX
)
6663 if (mutex_lock_killable(&volume_mutex
) < 0)
6666 rc
= volume_get_status_ec(&s
);
6670 n
= (s
& ~TP_EC_AUDIO_LVL_MSK
) | vol
;
6673 rc
= volume_set_status_ec(n
);
6679 mutex_unlock(&volume_mutex
);
6683 static int volume_alsa_set_volume(const u8 vol
)
6685 dbg_printk(TPACPI_DBG_MIXER
,
6686 "ALSA: trying to set volume level to %hu\n", vol
);
6687 return __volume_set_volume_ec(vol
);
6690 static void volume_alsa_notify_change(void)
6692 struct tpacpi_alsa_data
*d
;
6694 if (alsa_card
&& alsa_card
->private_data
) {
6695 d
= alsa_card
->private_data
;
6697 snd_ctl_notify(alsa_card
,
6698 SNDRV_CTL_EVENT_MASK_VALUE
,
6701 snd_ctl_notify(alsa_card
,
6702 SNDRV_CTL_EVENT_MASK_VALUE
,
6707 static int volume_alsa_vol_info(struct snd_kcontrol
*kcontrol
,
6708 struct snd_ctl_elem_info
*uinfo
)
6710 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_INTEGER
;
6712 uinfo
->value
.integer
.min
= 0;
6713 uinfo
->value
.integer
.max
= TP_EC_VOLUME_MAX
;
6717 static int volume_alsa_vol_get(struct snd_kcontrol
*kcontrol
,
6718 struct snd_ctl_elem_value
*ucontrol
)
6723 rc
= volume_get_status(&s
);
6727 ucontrol
->value
.integer
.value
[0] = s
& TP_EC_AUDIO_LVL_MSK
;
6731 static int volume_alsa_vol_put(struct snd_kcontrol
*kcontrol
,
6732 struct snd_ctl_elem_value
*ucontrol
)
6734 return volume_alsa_set_volume(ucontrol
->value
.integer
.value
[0]);
6737 #define volume_alsa_mute_info snd_ctl_boolean_mono_info
6739 static int volume_alsa_mute_get(struct snd_kcontrol
*kcontrol
,
6740 struct snd_ctl_elem_value
*ucontrol
)
6745 rc
= volume_get_status(&s
);
6749 ucontrol
->value
.integer
.value
[0] =
6750 (s
& TP_EC_AUDIO_MUTESW_MSK
) ? 0 : 1;
6754 static int volume_alsa_mute_put(struct snd_kcontrol
*kcontrol
,
6755 struct snd_ctl_elem_value
*ucontrol
)
6757 return volume_alsa_set_mute(!ucontrol
->value
.integer
.value
[0]);
6760 static struct snd_kcontrol_new volume_alsa_control_vol __devinitdata
= {
6761 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
6762 .name
= "Console Playback Volume",
6764 .access
= SNDRV_CTL_ELEM_ACCESS_READ
,
6765 .info
= volume_alsa_vol_info
,
6766 .get
= volume_alsa_vol_get
,
6769 static struct snd_kcontrol_new volume_alsa_control_mute __devinitdata
= {
6770 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
6771 .name
= "Console Playback Switch",
6773 .access
= SNDRV_CTL_ELEM_ACCESS_READ
,
6774 .info
= volume_alsa_mute_info
,
6775 .get
= volume_alsa_mute_get
,
6778 static void volume_suspend(pm_message_t state
)
6780 tpacpi_volume_checkpoint_nvram();
6783 static void volume_resume(void)
6785 volume_alsa_notify_change();
6788 static void volume_shutdown(void)
6790 tpacpi_volume_checkpoint_nvram();
6793 static void volume_exit(void)
6796 snd_card_free(alsa_card
);
6800 tpacpi_volume_checkpoint_nvram();
6803 static int __init
volume_create_alsa_mixer(void)
6805 struct snd_card
*card
;
6806 struct tpacpi_alsa_data
*data
;
6807 struct snd_kcontrol
*ctl_vol
;
6808 struct snd_kcontrol
*ctl_mute
;
6811 rc
= snd_card_create(alsa_index
, alsa_id
, THIS_MODULE
,
6812 sizeof(struct tpacpi_alsa_data
), &card
);
6813 if (rc
< 0 || !card
) {
6815 "Failed to create ALSA card structures: %d\n", rc
);
6819 BUG_ON(!card
->private_data
);
6820 data
= card
->private_data
;
6823 strlcpy(card
->driver
, TPACPI_ALSA_DRVNAME
,
6824 sizeof(card
->driver
));
6825 strlcpy(card
->shortname
, TPACPI_ALSA_SHRTNAME
,
6826 sizeof(card
->shortname
));
6827 snprintf(card
->mixername
, sizeof(card
->mixername
), "ThinkPad EC %s",
6828 (thinkpad_id
.ec_version_str
) ?
6829 thinkpad_id
.ec_version_str
: "(unknown)");
6830 snprintf(card
->longname
, sizeof(card
->longname
),
6831 "%s at EC reg 0x%02x, fw %s", card
->shortname
, TP_EC_AUDIO
,
6832 (thinkpad_id
.ec_version_str
) ?
6833 thinkpad_id
.ec_version_str
: "unknown");
6835 if (volume_control_allowed
) {
6836 volume_alsa_control_vol
.put
= volume_alsa_vol_put
;
6837 volume_alsa_control_vol
.access
=
6838 SNDRV_CTL_ELEM_ACCESS_READWRITE
;
6840 volume_alsa_control_mute
.put
= volume_alsa_mute_put
;
6841 volume_alsa_control_mute
.access
=
6842 SNDRV_CTL_ELEM_ACCESS_READWRITE
;
6845 if (!tp_features
.mixer_no_level_control
) {
6846 ctl_vol
= snd_ctl_new1(&volume_alsa_control_vol
, NULL
);
6847 rc
= snd_ctl_add(card
, ctl_vol
);
6850 "Failed to create ALSA volume control: %d\n",
6854 data
->ctl_vol_id
= &ctl_vol
->id
;
6857 ctl_mute
= snd_ctl_new1(&volume_alsa_control_mute
, NULL
);
6858 rc
= snd_ctl_add(card
, ctl_mute
);
6860 printk(TPACPI_ERR
"Failed to create ALSA mute control: %d\n",
6864 data
->ctl_mute_id
= &ctl_mute
->id
;
6866 snd_card_set_dev(card
, &tpacpi_pdev
->dev
);
6867 rc
= snd_card_register(card
);
6869 printk(TPACPI_ERR
"Failed to register ALSA card: %d\n", rc
);
6877 snd_card_free(card
);
6881 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
6882 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
6884 static const struct tpacpi_quirk volume_quirk_table
[] __initconst
= {
6885 /* Whitelist volume level on all IBM by default */
6886 { .vendor
= PCI_VENDOR_ID_IBM
,
6887 .bios
= TPACPI_MATCH_ANY
,
6888 .ec
= TPACPI_MATCH_ANY
,
6889 .quirks
= TPACPI_VOL_Q_LEVEL
},
6891 /* Lenovo models with volume control (needs confirmation) */
6892 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL
), /* R60/i */
6893 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL
), /* R60e/i */
6894 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL
), /* T60/p */
6895 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL
), /* X60/s */
6896 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL
), /* X60t */
6897 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL
), /* Z60 */
6898 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL
), /* Z61 */
6900 /* Whitelist mute-only on all Lenovo by default */
6901 { .vendor
= PCI_VENDOR_ID_LENOVO
,
6902 .bios
= TPACPI_MATCH_ANY
,
6903 .ec
= TPACPI_MATCH_ANY
,
6904 .quirks
= TPACPI_VOL_Q_MUTEONLY
}
6907 static int __init
volume_init(struct ibm_init_struct
*iibm
)
6909 unsigned long quirks
;
6912 vdbg_printk(TPACPI_DBG_INIT
, "initializing volume subdriver\n");
6914 mutex_init(&volume_mutex
);
6917 * Check for module parameter bogosity, note that we
6918 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
6919 * able to detect "unspecified"
6921 if (volume_mode
> TPACPI_VOL_MODE_MAX
)
6924 if (volume_mode
== TPACPI_VOL_MODE_UCMS_STEP
) {
6926 "UCMS step volume mode not implemented, "
6927 "please contact %s\n", TPACPI_MAIL
);
6931 if (volume_capabilities
>= TPACPI_VOL_CAP_MAX
)
6935 * The ALSA mixer is our primary interface.
6936 * When disabled, don't install the subdriver at all
6939 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6940 "ALSA mixer disabled by parameter, "
6941 "not loading volume subdriver...\n");
6945 quirks
= tpacpi_check_quirks(volume_quirk_table
,
6946 ARRAY_SIZE(volume_quirk_table
));
6948 switch (volume_capabilities
) {
6949 case TPACPI_VOL_CAP_AUTO
:
6950 if (quirks
& TPACPI_VOL_Q_MUTEONLY
)
6951 tp_features
.mixer_no_level_control
= 1;
6952 else if (quirks
& TPACPI_VOL_Q_LEVEL
)
6953 tp_features
.mixer_no_level_control
= 0;
6955 return 1; /* no mixer */
6957 case TPACPI_VOL_CAP_VOLMUTE
:
6958 tp_features
.mixer_no_level_control
= 0;
6960 case TPACPI_VOL_CAP_MUTEONLY
:
6961 tp_features
.mixer_no_level_control
= 1;
6967 if (volume_capabilities
!= TPACPI_VOL_CAP_AUTO
)
6968 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6969 "using user-supplied volume_capabilities=%d\n",
6970 volume_capabilities
);
6972 if (volume_mode
== TPACPI_VOL_MODE_AUTO
||
6973 volume_mode
== TPACPI_VOL_MODE_MAX
) {
6974 volume_mode
= TPACPI_VOL_MODE_ECNVRAM
;
6976 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6977 "driver auto-selected volume_mode=%d\n",
6980 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6981 "using user-supplied volume_mode=%d\n",
6985 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
6986 "mute is supported, volume control is %s\n",
6987 str_supported(!tp_features
.mixer_no_level_control
));
6989 rc
= volume_create_alsa_mixer();
6992 "Could not create the ALSA mixer interface\n");
6997 "Console audio control enabled, mode: %s\n",
6998 (volume_control_allowed
) ?
6999 "override (read/write)" :
7000 "monitor (read only)");
7002 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_MIXER
,
7003 "registering volume hotkeys as change notification\n");
7004 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
7005 | TP_ACPI_HKEY_VOLUP_MASK
7006 | TP_ACPI_HKEY_VOLDWN_MASK
7007 | TP_ACPI_HKEY_MUTE_MASK
);
7012 static int volume_read(struct seq_file
*m
)
7016 if (volume_get_status(&status
) < 0) {
7017 seq_printf(m
, "level:\t\tunreadable\n");
7019 if (tp_features
.mixer_no_level_control
)
7020 seq_printf(m
, "level:\t\tunsupported\n");
7022 seq_printf(m
, "level:\t\t%d\n",
7023 status
& TP_EC_AUDIO_LVL_MSK
);
7025 seq_printf(m
, "mute:\t\t%s\n",
7026 onoff(status
, TP_EC_AUDIO_MUTESW
));
7028 if (volume_control_allowed
) {
7029 seq_printf(m
, "commands:\tunmute, mute\n");
7030 if (!tp_features
.mixer_no_level_control
) {
7032 "commands:\tup, down\n");
7034 "commands:\tlevel <level>"
7035 " (<level> is 0-%d)\n",
7044 static int volume_write(char *buf
)
7047 u8 new_level
, new_mute
;
7053 * We do allow volume control at driver startup, so that the
7054 * user can set initial state through the volume=... parameter hack.
7056 if (!volume_control_allowed
&& tpacpi_lifecycle
!= TPACPI_LIFE_INIT
) {
7057 if (unlikely(!tp_warned
.volume_ctrl_forbidden
)) {
7058 tp_warned
.volume_ctrl_forbidden
= 1;
7059 printk(TPACPI_NOTICE
7060 "Console audio control in monitor mode, "
7061 "changes are not allowed.\n");
7062 printk(TPACPI_NOTICE
7063 "Use the volume_control=1 module parameter "
7064 "to enable volume control\n");
7069 rc
= volume_get_status(&s
);
7073 new_level
= s
& TP_EC_AUDIO_LVL_MSK
;
7074 new_mute
= s
& TP_EC_AUDIO_MUTESW_MSK
;
7076 while ((cmd
= next_cmd(&buf
))) {
7077 if (!tp_features
.mixer_no_level_control
) {
7078 if (strlencmp(cmd
, "up") == 0) {
7081 else if (new_level
< TP_EC_VOLUME_MAX
)
7084 } else if (strlencmp(cmd
, "down") == 0) {
7087 else if (new_level
> 0)
7090 } else if (sscanf(cmd
, "level %u", &l
) == 1 &&
7091 l
>= 0 && l
<= TP_EC_VOLUME_MAX
) {
7096 if (strlencmp(cmd
, "mute") == 0)
7097 new_mute
= TP_EC_AUDIO_MUTESW_MSK
;
7098 else if (strlencmp(cmd
, "unmute") == 0)
7104 if (tp_features
.mixer_no_level_control
) {
7105 tpacpi_disclose_usertask("procfs volume", "%smute\n",
7106 new_mute
? "" : "un");
7107 rc
= volume_set_mute(!!new_mute
);
7109 tpacpi_disclose_usertask("procfs volume",
7110 "%smute and set level to %d\n",
7111 new_mute
? "" : "un", new_level
);
7112 rc
= volume_set_status(new_mute
| new_level
);
7114 volume_alsa_notify_change();
7116 return (rc
== -EINTR
) ? -ERESTARTSYS
: rc
;
7119 static struct ibm_struct volume_driver_data
= {
7121 .read
= volume_read
,
7122 .write
= volume_write
,
7123 .exit
= volume_exit
,
7124 .suspend
= volume_suspend
,
7125 .resume
= volume_resume
,
7126 .shutdown
= volume_shutdown
,
7129 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7131 #define alsa_card NULL
7133 static void inline volume_alsa_notify_change(void)
7137 static int __init
volume_init(struct ibm_init_struct
*iibm
)
7140 "volume: disabled as there is no ALSA support in this kernel\n");
7145 static struct ibm_struct volume_driver_data
= {
7149 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7151 /*************************************************************************
7158 * TPACPI_FAN_RD_ACPI_GFAN:
7159 * ACPI GFAN method: returns fan level
7161 * see TPACPI_FAN_WR_ACPI_SFAN
7162 * EC 0x2f (HFSP) not available if GFAN exists
7164 * TPACPI_FAN_WR_ACPI_SFAN:
7165 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
7167 * EC 0x2f (HFSP) might be available *for reading*, but do not use
7170 * TPACPI_FAN_WR_TPEC:
7171 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
7172 * Supported on almost all ThinkPads
7174 * Fan speed changes of any sort (including those caused by the
7175 * disengaged mode) are usually done slowly by the firmware as the
7176 * maximum amount of fan duty cycle change per second seems to be
7179 * Reading is not available if GFAN exists.
7180 * Writing is not available if SFAN exists.
7183 * 7 automatic mode engaged;
7184 * (default operation mode of the ThinkPad)
7185 * fan level is ignored in this mode.
7186 * 6 full speed mode (takes precedence over bit 7);
7187 * not available on all thinkpads. May disable
7188 * the tachometer while the fan controller ramps up
7189 * the speed (which can take up to a few *minutes*).
7190 * Speeds up fan to 100% duty-cycle, which is far above
7191 * the standard RPM levels. It is not impossible that
7192 * it could cause hardware damage.
7193 * 5-3 unused in some models. Extra bits for fan level
7194 * in others, but still useless as all values above
7195 * 7 map to the same speed as level 7 in these models.
7196 * 2-0 fan level (0..7 usually)
7198 * 0x07 = max (set when temperatures critical)
7199 * Some ThinkPads may have other levels, see
7200 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
7202 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
7203 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
7204 * does so, its initial value is meaningless (0x07).
7206 * For firmware bugs, refer to:
7207 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7211 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
7212 * Main fan tachometer reading (in RPM)
7214 * This register is present on all ThinkPads with a new-style EC, and
7215 * it is known not to be present on the A21m/e, and T22, as there is
7216 * something else in offset 0x84 according to the ACPI DSDT. Other
7217 * ThinkPads from this same time period (and earlier) probably lack the
7218 * tachometer as well.
7220 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
7221 * was never fixed by IBM to report the EC firmware version string
7222 * probably support the tachometer (like the early X models), so
7223 * detecting it is quite hard. We need more data to know for sure.
7225 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
7228 * FIRMWARE BUG: may go stale while the EC is switching to full speed
7231 * For firmware bugs, refer to:
7232 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7236 * ThinkPad EC register 0x31 bit 0 (only on select models)
7238 * When bit 0 of EC register 0x31 is zero, the tachometer registers
7239 * show the speed of the main fan. When bit 0 of EC register 0x31
7240 * is one, the tachometer registers show the speed of the auxiliary
7243 * Fan control seems to affect both fans, regardless of the state
7246 * So far, only the firmware for the X60/X61 non-tablet versions
7247 * seem to support this (firmware TP-7M).
7249 * TPACPI_FAN_WR_ACPI_FANS:
7250 * ThinkPad X31, X40, X41. Not available in the X60.
7252 * FANS ACPI handle: takes three arguments: low speed, medium speed,
7253 * high speed. ACPI DSDT seems to map these three speeds to levels
7254 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
7255 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
7257 * The speeds are stored on handles
7258 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
7260 * There are three default speed sets, accessible as handles:
7261 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
7263 * ACPI DSDT switches which set is in use depending on various
7266 * TPACPI_FAN_WR_TPEC is also available and should be used to
7267 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
7268 * but the ACPI tables just mention level 7.
7271 enum { /* Fan control constants */
7272 fan_status_offset
= 0x2f, /* EC register 0x2f */
7273 fan_rpm_offset
= 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
7274 * 0x84 must be read before 0x85 */
7275 fan_select_offset
= 0x31, /* EC register 0x31 (Firmware 7M)
7276 bit 0 selects which fan is active */
7278 TP_EC_FAN_FULLSPEED
= 0x40, /* EC fan mode: full speed */
7279 TP_EC_FAN_AUTO
= 0x80, /* EC fan mode: auto fan control */
7281 TPACPI_FAN_LAST_LEVEL
= 0x100, /* Use cached last-seen fan level */
7284 enum fan_status_access_mode
{
7285 TPACPI_FAN_NONE
= 0, /* No fan status or control */
7286 TPACPI_FAN_RD_ACPI_GFAN
, /* Use ACPI GFAN */
7287 TPACPI_FAN_RD_TPEC
, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
7290 enum fan_control_access_mode
{
7291 TPACPI_FAN_WR_NONE
= 0, /* No fan control */
7292 TPACPI_FAN_WR_ACPI_SFAN
, /* Use ACPI SFAN */
7293 TPACPI_FAN_WR_TPEC
, /* Use ACPI EC reg 0x2f */
7294 TPACPI_FAN_WR_ACPI_FANS
, /* Use ACPI FANS and EC reg 0x2f */
7297 enum fan_control_commands
{
7298 TPACPI_FAN_CMD_SPEED
= 0x0001, /* speed command */
7299 TPACPI_FAN_CMD_LEVEL
= 0x0002, /* level command */
7300 TPACPI_FAN_CMD_ENABLE
= 0x0004, /* enable/disable cmd,
7301 * and also watchdog cmd */
7304 static int fan_control_allowed
;
7306 static enum fan_status_access_mode fan_status_access_mode
;
7307 static enum fan_control_access_mode fan_control_access_mode
;
7308 static enum fan_control_commands fan_control_commands
;
7310 static u8 fan_control_initial_status
;
7311 static u8 fan_control_desired_level
;
7312 static u8 fan_control_resume_level
;
7313 static int fan_watchdog_maxinterval
;
7315 static struct mutex fan_mutex
;
7317 static void fan_watchdog_fire(struct work_struct
*ignored
);
7318 static DECLARE_DELAYED_WORK(fan_watchdog_task
, fan_watchdog_fire
);
7320 TPACPI_HANDLE(fans
, ec
, "FANS"); /* X31, X40, X41 */
7321 TPACPI_HANDLE(gfan
, ec
, "GFAN", /* 570 */
7322 "\\FSPD", /* 600e/x, 770e, 770x */
7324 TPACPI_HANDLE(sfan
, ec
, "SFAN", /* 570 */
7325 "JFNS", /* 770x-JL */
7329 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
7330 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
7331 * be in auto mode (0x80).
7333 * This is corrected by any write to HFSP either by the driver, or
7336 * We assume 0x07 really means auto mode while this quirk is active,
7337 * as this is far more likely than the ThinkPad being in level 7,
7338 * which is only used by the firmware during thermal emergencies.
7340 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
7341 * TP-70 (T43, R52), which are known to be buggy.
7344 static void fan_quirk1_setup(void)
7346 if (fan_control_initial_status
== 0x07) {
7347 printk(TPACPI_NOTICE
7348 "fan_init: initial fan status is unknown, "
7349 "assuming it is in auto mode\n");
7350 tp_features
.fan_ctrl_status_undef
= 1;
7354 static void fan_quirk1_handle(u8
*fan_status
)
7356 if (unlikely(tp_features
.fan_ctrl_status_undef
)) {
7357 if (*fan_status
!= fan_control_initial_status
) {
7358 /* something changed the HFSP regisnter since
7359 * driver init time, so it is not undefined
7361 tp_features
.fan_ctrl_status_undef
= 0;
7363 /* Return most likely status. In fact, it
7364 * might be the only possible status */
7365 *fan_status
= TP_EC_FAN_AUTO
;
7370 /* Select main fan on X60/X61, NOOP on others */
7371 static bool fan_select_fan1(void)
7373 if (tp_features
.second_fan
) {
7376 if (ec_read(fan_select_offset
, &val
) < 0)
7379 if (ec_write(fan_select_offset
, val
) < 0)
7385 /* Select secondary fan on X60/X61 */
7386 static bool fan_select_fan2(void)
7390 if (!tp_features
.second_fan
)
7393 if (ec_read(fan_select_offset
, &val
) < 0)
7396 if (ec_write(fan_select_offset
, val
) < 0)
7403 * Call with fan_mutex held
7405 static void fan_update_desired_level(u8 status
)
7408 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
7410 fan_control_desired_level
= 7;
7412 fan_control_desired_level
= status
;
7416 static int fan_get_status(u8
*status
)
7421 * Add TPACPI_FAN_RD_ACPI_FANS ? */
7423 switch (fan_status_access_mode
) {
7424 case TPACPI_FAN_RD_ACPI_GFAN
:
7425 /* 570, 600e/x, 770e, 770x */
7427 if (unlikely(!acpi_evalf(gfan_handle
, &s
, NULL
, "d")))
7435 case TPACPI_FAN_RD_TPEC
:
7436 /* all except 570, 600e/x, 770e, 770x */
7437 if (unlikely(!acpi_ec_read(fan_status_offset
, &s
)))
7440 if (likely(status
)) {
7442 fan_quirk1_handle(status
);
7454 static int fan_get_status_safe(u8
*status
)
7459 if (mutex_lock_killable(&fan_mutex
))
7460 return -ERESTARTSYS
;
7461 rc
= fan_get_status(&s
);
7463 fan_update_desired_level(s
);
7464 mutex_unlock(&fan_mutex
);
7472 static int fan_get_speed(unsigned int *speed
)
7476 switch (fan_status_access_mode
) {
7477 case TPACPI_FAN_RD_TPEC
:
7478 /* all except 570, 600e/x, 770e, 770x */
7479 if (unlikely(!fan_select_fan1()))
7481 if (unlikely(!acpi_ec_read(fan_rpm_offset
, &lo
) ||
7482 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
)))
7486 *speed
= (hi
<< 8) | lo
;
7497 static int fan2_get_speed(unsigned int *speed
)
7502 switch (fan_status_access_mode
) {
7503 case TPACPI_FAN_RD_TPEC
:
7504 /* all except 570, 600e/x, 770e, 770x */
7505 if (unlikely(!fan_select_fan2()))
7507 rc
= !acpi_ec_read(fan_rpm_offset
, &lo
) ||
7508 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
);
7509 fan_select_fan1(); /* play it safe */
7514 *speed
= (hi
<< 8) | lo
;
7525 static int fan_set_level(int level
)
7527 if (!fan_control_allowed
)
7530 switch (fan_control_access_mode
) {
7531 case TPACPI_FAN_WR_ACPI_SFAN
:
7532 if (level
>= 0 && level
<= 7) {
7533 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", level
))
7539 case TPACPI_FAN_WR_ACPI_FANS
:
7540 case TPACPI_FAN_WR_TPEC
:
7541 if (!(level
& TP_EC_FAN_AUTO
) &&
7542 !(level
& TP_EC_FAN_FULLSPEED
) &&
7543 ((level
< 0) || (level
> 7)))
7546 /* safety net should the EC not support AUTO
7547 * or FULLSPEED mode bits and just ignore them */
7548 if (level
& TP_EC_FAN_FULLSPEED
)
7549 level
|= 7; /* safety min speed 7 */
7550 else if (level
& TP_EC_FAN_AUTO
)
7551 level
|= 4; /* safety min speed 4 */
7553 if (!acpi_ec_write(fan_status_offset
, level
))
7556 tp_features
.fan_ctrl_status_undef
= 0;
7563 vdbg_printk(TPACPI_DBG_FAN
,
7564 "fan control: set fan control register to 0x%02x\n", level
);
7568 static int fan_set_level_safe(int level
)
7572 if (!fan_control_allowed
)
7575 if (mutex_lock_killable(&fan_mutex
))
7576 return -ERESTARTSYS
;
7578 if (level
== TPACPI_FAN_LAST_LEVEL
)
7579 level
= fan_control_desired_level
;
7581 rc
= fan_set_level(level
);
7583 fan_update_desired_level(level
);
7585 mutex_unlock(&fan_mutex
);
7589 static int fan_set_enable(void)
7594 if (!fan_control_allowed
)
7597 if (mutex_lock_killable(&fan_mutex
))
7598 return -ERESTARTSYS
;
7600 switch (fan_control_access_mode
) {
7601 case TPACPI_FAN_WR_ACPI_FANS
:
7602 case TPACPI_FAN_WR_TPEC
:
7603 rc
= fan_get_status(&s
);
7607 /* Don't go out of emergency fan mode */
7610 s
|= TP_EC_FAN_AUTO
| 4; /* min fan speed 4 */
7613 if (!acpi_ec_write(fan_status_offset
, s
))
7616 tp_features
.fan_ctrl_status_undef
= 0;
7621 case TPACPI_FAN_WR_ACPI_SFAN
:
7622 rc
= fan_get_status(&s
);
7628 /* Set fan to at least level 4 */
7631 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", s
))
7641 mutex_unlock(&fan_mutex
);
7644 vdbg_printk(TPACPI_DBG_FAN
,
7645 "fan control: set fan control register to 0x%02x\n",
7650 static int fan_set_disable(void)
7654 if (!fan_control_allowed
)
7657 if (mutex_lock_killable(&fan_mutex
))
7658 return -ERESTARTSYS
;
7661 switch (fan_control_access_mode
) {
7662 case TPACPI_FAN_WR_ACPI_FANS
:
7663 case TPACPI_FAN_WR_TPEC
:
7664 if (!acpi_ec_write(fan_status_offset
, 0x00))
7667 fan_control_desired_level
= 0;
7668 tp_features
.fan_ctrl_status_undef
= 0;
7672 case TPACPI_FAN_WR_ACPI_SFAN
:
7673 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", 0x00))
7676 fan_control_desired_level
= 0;
7684 vdbg_printk(TPACPI_DBG_FAN
,
7685 "fan control: set fan control register to 0\n");
7687 mutex_unlock(&fan_mutex
);
7691 static int fan_set_speed(int speed
)
7695 if (!fan_control_allowed
)
7698 if (mutex_lock_killable(&fan_mutex
))
7699 return -ERESTARTSYS
;
7702 switch (fan_control_access_mode
) {
7703 case TPACPI_FAN_WR_ACPI_FANS
:
7704 if (speed
>= 0 && speed
<= 65535) {
7705 if (!acpi_evalf(fans_handle
, NULL
, NULL
, "vddd",
7706 speed
, speed
, speed
))
7716 mutex_unlock(&fan_mutex
);
7720 static void fan_watchdog_reset(void)
7722 static int fan_watchdog_active
;
7724 if (fan_control_access_mode
== TPACPI_FAN_WR_NONE
)
7727 if (fan_watchdog_active
)
7728 cancel_delayed_work(&fan_watchdog_task
);
7730 if (fan_watchdog_maxinterval
> 0 &&
7731 tpacpi_lifecycle
!= TPACPI_LIFE_EXITING
) {
7732 fan_watchdog_active
= 1;
7733 if (!queue_delayed_work(tpacpi_wq
, &fan_watchdog_task
,
7734 msecs_to_jiffies(fan_watchdog_maxinterval
7737 "failed to queue the fan watchdog, "
7738 "watchdog will not trigger\n");
7741 fan_watchdog_active
= 0;
7744 static void fan_watchdog_fire(struct work_struct
*ignored
)
7748 if (tpacpi_lifecycle
!= TPACPI_LIFE_RUNNING
)
7751 printk(TPACPI_NOTICE
"fan watchdog: enabling fan\n");
7752 rc
= fan_set_enable();
7754 printk(TPACPI_ERR
"fan watchdog: error %d while enabling fan, "
7755 "will try again later...\n", -rc
);
7756 /* reschedule for later */
7757 fan_watchdog_reset();
7762 * SYSFS fan layout: hwmon compatible (device)
7765 * 0: "disengaged" mode
7767 * 2: native EC "auto" mode (recommended, hardware default)
7769 * pwm*: set speed in manual mode, ignored otherwise.
7770 * 0 is level 0; 255 is level 7. Intermediate points done with linear
7773 * fan*_input: tachometer reading, RPM
7776 * SYSFS fan layout: extensions
7778 * fan_watchdog (driver):
7779 * fan watchdog interval in seconds, 0 disables (default), max 120
7782 /* sysfs fan pwm1_enable ----------------------------------------------- */
7783 static ssize_t
fan_pwm1_enable_show(struct device
*dev
,
7784 struct device_attribute
*attr
,
7790 res
= fan_get_status_safe(&status
);
7794 if (status
& TP_EC_FAN_FULLSPEED
) {
7796 } else if (status
& TP_EC_FAN_AUTO
) {
7801 return snprintf(buf
, PAGE_SIZE
, "%d\n", mode
);
7804 static ssize_t
fan_pwm1_enable_store(struct device
*dev
,
7805 struct device_attribute
*attr
,
7806 const char *buf
, size_t count
)
7811 if (parse_strtoul(buf
, 2, &t
))
7814 tpacpi_disclose_usertask("hwmon pwm1_enable",
7815 "set fan mode to %lu\n", t
);
7819 level
= TP_EC_FAN_FULLSPEED
;
7822 level
= TPACPI_FAN_LAST_LEVEL
;
7825 level
= TP_EC_FAN_AUTO
;
7828 /* reserved for software-controlled auto mode */
7834 res
= fan_set_level_safe(level
);
7840 fan_watchdog_reset();
7845 static struct device_attribute dev_attr_fan_pwm1_enable
=
7846 __ATTR(pwm1_enable
, S_IWUSR
| S_IRUGO
,
7847 fan_pwm1_enable_show
, fan_pwm1_enable_store
);
7849 /* sysfs fan pwm1 ------------------------------------------------------ */
7850 static ssize_t
fan_pwm1_show(struct device
*dev
,
7851 struct device_attribute
*attr
,
7857 res
= fan_get_status_safe(&status
);
7862 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) != 0)
7863 status
= fan_control_desired_level
;
7868 return snprintf(buf
, PAGE_SIZE
, "%u\n", (status
* 255) / 7);
7871 static ssize_t
fan_pwm1_store(struct device
*dev
,
7872 struct device_attribute
*attr
,
7873 const char *buf
, size_t count
)
7877 u8 status
, newlevel
;
7879 if (parse_strtoul(buf
, 255, &s
))
7882 tpacpi_disclose_usertask("hwmon pwm1",
7883 "set fan speed to %lu\n", s
);
7885 /* scale down from 0-255 to 0-7 */
7886 newlevel
= (s
>> 5) & 0x07;
7888 if (mutex_lock_killable(&fan_mutex
))
7889 return -ERESTARTSYS
;
7891 rc
= fan_get_status(&status
);
7892 if (!rc
&& (status
&
7893 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
7894 rc
= fan_set_level(newlevel
);
7898 fan_update_desired_level(newlevel
);
7899 fan_watchdog_reset();
7903 mutex_unlock(&fan_mutex
);
7904 return (rc
)? rc
: count
;
7907 static struct device_attribute dev_attr_fan_pwm1
=
7908 __ATTR(pwm1
, S_IWUSR
| S_IRUGO
,
7909 fan_pwm1_show
, fan_pwm1_store
);
7911 /* sysfs fan fan1_input ------------------------------------------------ */
7912 static ssize_t
fan_fan1_input_show(struct device
*dev
,
7913 struct device_attribute
*attr
,
7919 res
= fan_get_speed(&speed
);
7923 return snprintf(buf
, PAGE_SIZE
, "%u\n", speed
);
7926 static struct device_attribute dev_attr_fan_fan1_input
=
7927 __ATTR(fan1_input
, S_IRUGO
,
7928 fan_fan1_input_show
, NULL
);
7930 /* sysfs fan fan2_input ------------------------------------------------ */
7931 static ssize_t
fan_fan2_input_show(struct device
*dev
,
7932 struct device_attribute
*attr
,
7938 res
= fan2_get_speed(&speed
);
7942 return snprintf(buf
, PAGE_SIZE
, "%u\n", speed
);
7945 static struct device_attribute dev_attr_fan_fan2_input
=
7946 __ATTR(fan2_input
, S_IRUGO
,
7947 fan_fan2_input_show
, NULL
);
7949 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
7950 static ssize_t
fan_fan_watchdog_show(struct device_driver
*drv
,
7953 return snprintf(buf
, PAGE_SIZE
, "%u\n", fan_watchdog_maxinterval
);
7956 static ssize_t
fan_fan_watchdog_store(struct device_driver
*drv
,
7957 const char *buf
, size_t count
)
7961 if (parse_strtoul(buf
, 120, &t
))
7964 if (!fan_control_allowed
)
7967 fan_watchdog_maxinterval
= t
;
7968 fan_watchdog_reset();
7970 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t
);
7975 static DRIVER_ATTR(fan_watchdog
, S_IWUSR
| S_IRUGO
,
7976 fan_fan_watchdog_show
, fan_fan_watchdog_store
);
7978 /* --------------------------------------------------------------------- */
7979 static struct attribute
*fan_attributes
[] = {
7980 &dev_attr_fan_pwm1_enable
.attr
, &dev_attr_fan_pwm1
.attr
,
7981 &dev_attr_fan_fan1_input
.attr
,
7982 NULL
, /* for fan2_input */
7986 static const struct attribute_group fan_attr_group
= {
7987 .attrs
= fan_attributes
,
7990 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
7991 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7993 #define TPACPI_FAN_QI(__id1, __id2, __quirks) \
7994 { .vendor = PCI_VENDOR_ID_IBM, \
7995 .bios = TPACPI_MATCH_ANY, \
7996 .ec = TPID(__id1, __id2), \
7997 .quirks = __quirks }
7999 #define TPACPI_FAN_QL(__id1, __id2, __quirks) \
8000 { .vendor = PCI_VENDOR_ID_LENOVO, \
8001 .bios = TPACPI_MATCH_ANY, \
8002 .ec = TPID(__id1, __id2), \
8003 .quirks = __quirks }
8005 static const struct tpacpi_quirk fan_quirk_table
[] __initconst
= {
8006 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1
),
8007 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1
),
8008 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1
),
8009 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1
),
8010 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN
),
8013 #undef TPACPI_FAN_QL
8014 #undef TPACPI_FAN_QI
8016 static int __init
fan_init(struct ibm_init_struct
*iibm
)
8019 unsigned long quirks
;
8021 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
8022 "initializing fan subdriver\n");
8024 mutex_init(&fan_mutex
);
8025 fan_status_access_mode
= TPACPI_FAN_NONE
;
8026 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
8027 fan_control_commands
= 0;
8028 fan_watchdog_maxinterval
= 0;
8029 tp_features
.fan_ctrl_status_undef
= 0;
8030 tp_features
.second_fan
= 0;
8031 fan_control_desired_level
= 7;
8033 if (tpacpi_is_ibm()) {
8034 TPACPI_ACPIHANDLE_INIT(fans
);
8035 TPACPI_ACPIHANDLE_INIT(gfan
);
8036 TPACPI_ACPIHANDLE_INIT(sfan
);
8039 quirks
= tpacpi_check_quirks(fan_quirk_table
,
8040 ARRAY_SIZE(fan_quirk_table
));
8043 /* 570, 600e/x, 770e, 770x */
8044 fan_status_access_mode
= TPACPI_FAN_RD_ACPI_GFAN
;
8046 /* all other ThinkPads: note that even old-style
8047 * ThinkPad ECs supports the fan control register */
8048 if (likely(acpi_ec_read(fan_status_offset
,
8049 &fan_control_initial_status
))) {
8050 fan_status_access_mode
= TPACPI_FAN_RD_TPEC
;
8051 if (quirks
& TPACPI_FAN_Q1
)
8053 if (quirks
& TPACPI_FAN_2FAN
) {
8054 tp_features
.second_fan
= 1;
8055 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
8056 "secondary fan support enabled\n");
8060 "ThinkPad ACPI EC access misbehaving, "
8061 "fan status and control unavailable\n");
8068 fan_control_access_mode
= TPACPI_FAN_WR_ACPI_SFAN
;
8069 fan_control_commands
|=
8070 TPACPI_FAN_CMD_LEVEL
| TPACPI_FAN_CMD_ENABLE
;
8073 /* gfan without sfan means no fan control */
8074 /* all other models implement TP EC 0x2f control */
8078 fan_control_access_mode
=
8079 TPACPI_FAN_WR_ACPI_FANS
;
8080 fan_control_commands
|=
8081 TPACPI_FAN_CMD_SPEED
|
8082 TPACPI_FAN_CMD_LEVEL
|
8083 TPACPI_FAN_CMD_ENABLE
;
8085 fan_control_access_mode
= TPACPI_FAN_WR_TPEC
;
8086 fan_control_commands
|=
8087 TPACPI_FAN_CMD_LEVEL
|
8088 TPACPI_FAN_CMD_ENABLE
;
8093 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
8094 "fan is %s, modes %d, %d\n",
8095 str_supported(fan_status_access_mode
!= TPACPI_FAN_NONE
||
8096 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
),
8097 fan_status_access_mode
, fan_control_access_mode
);
8099 /* fan control master switch */
8100 if (!fan_control_allowed
) {
8101 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
8102 fan_control_commands
= 0;
8103 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
8104 "fan control features disabled by parameter\n");
8107 /* update fan_control_desired_level */
8108 if (fan_status_access_mode
!= TPACPI_FAN_NONE
)
8109 fan_get_status_safe(NULL
);
8111 if (fan_status_access_mode
!= TPACPI_FAN_NONE
||
8112 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
) {
8113 if (tp_features
.second_fan
) {
8114 /* attach second fan tachometer */
8115 fan_attributes
[ARRAY_SIZE(fan_attributes
)-2] =
8116 &dev_attr_fan_fan2_input
.attr
;
8118 rc
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
8123 rc
= driver_create_file(&tpacpi_hwmon_pdriver
.driver
,
8124 &driver_attr_fan_watchdog
);
8126 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
8135 static void fan_exit(void)
8137 vdbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_FAN
,
8138 "cancelling any pending fan watchdog tasks\n");
8140 /* FIXME: can we really do this unconditionally? */
8141 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
, &fan_attr_group
);
8142 driver_remove_file(&tpacpi_hwmon_pdriver
.driver
,
8143 &driver_attr_fan_watchdog
);
8145 cancel_delayed_work(&fan_watchdog_task
);
8146 flush_workqueue(tpacpi_wq
);
8149 static void fan_suspend(pm_message_t state
)
8153 if (!fan_control_allowed
)
8156 /* Store fan status in cache */
8157 fan_control_resume_level
= 0;
8158 rc
= fan_get_status_safe(&fan_control_resume_level
);
8160 printk(TPACPI_NOTICE
8161 "failed to read fan level for later "
8162 "restore during resume: %d\n", rc
);
8164 /* if it is undefined, don't attempt to restore it.
8166 if (tp_features
.fan_ctrl_status_undef
)
8167 fan_control_resume_level
= 0;
8170 static void fan_resume(void)
8172 u8 current_level
= 7;
8173 bool do_set
= false;
8176 /* DSDT *always* updates status on resume */
8177 tp_features
.fan_ctrl_status_undef
= 0;
8179 if (!fan_control_allowed
||
8180 !fan_control_resume_level
||
8181 (fan_get_status_safe(¤t_level
) < 0))
8184 switch (fan_control_access_mode
) {
8185 case TPACPI_FAN_WR_ACPI_SFAN
:
8186 /* never decrease fan level */
8187 do_set
= (fan_control_resume_level
> current_level
);
8189 case TPACPI_FAN_WR_ACPI_FANS
:
8190 case TPACPI_FAN_WR_TPEC
:
8191 /* never decrease fan level, scale is:
8192 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
8194 * We expect the firmware to set either 7 or AUTO, but we
8195 * handle FULLSPEED out of paranoia.
8197 * So, we can safely only restore FULLSPEED or 7, anything
8198 * else could slow the fan. Restoring AUTO is useless, at
8199 * best that's exactly what the DSDT already set (it is the
8202 * Always keep in mind that the DSDT *will* have set the
8203 * fans to what the vendor supposes is the best level. We
8204 * muck with it only to speed the fan up.
8206 if (fan_control_resume_level
!= 7 &&
8207 !(fan_control_resume_level
& TP_EC_FAN_FULLSPEED
))
8210 do_set
= !(current_level
& TP_EC_FAN_FULLSPEED
) &&
8211 (current_level
!= fan_control_resume_level
);
8217 printk(TPACPI_NOTICE
8218 "restoring fan level to 0x%02x\n",
8219 fan_control_resume_level
);
8220 rc
= fan_set_level_safe(fan_control_resume_level
);
8222 printk(TPACPI_NOTICE
8223 "failed to restore fan level: %d\n", rc
);
8227 static int fan_read(struct seq_file
*m
)
8231 unsigned int speed
= 0;
8233 switch (fan_status_access_mode
) {
8234 case TPACPI_FAN_RD_ACPI_GFAN
:
8235 /* 570, 600e/x, 770e, 770x */
8236 rc
= fan_get_status_safe(&status
);
8240 seq_printf(m
, "status:\t\t%s\n"
8242 (status
!= 0) ? "enabled" : "disabled", status
);
8245 case TPACPI_FAN_RD_TPEC
:
8246 /* all except 570, 600e/x, 770e, 770x */
8247 rc
= fan_get_status_safe(&status
);
8251 seq_printf(m
, "status:\t\t%s\n",
8252 (status
!= 0) ? "enabled" : "disabled");
8254 rc
= fan_get_speed(&speed
);
8258 seq_printf(m
, "speed:\t\t%d\n", speed
);
8260 if (status
& TP_EC_FAN_FULLSPEED
)
8261 /* Disengaged mode takes precedence */
8262 seq_printf(m
, "level:\t\tdisengaged\n");
8263 else if (status
& TP_EC_FAN_AUTO
)
8264 seq_printf(m
, "level:\t\tauto\n");
8266 seq_printf(m
, "level:\t\t%d\n", status
);
8269 case TPACPI_FAN_NONE
:
8271 seq_printf(m
, "status:\t\tnot supported\n");
8274 if (fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) {
8275 seq_printf(m
, "commands:\tlevel <level>");
8277 switch (fan_control_access_mode
) {
8278 case TPACPI_FAN_WR_ACPI_SFAN
:
8279 seq_printf(m
, " (<level> is 0-7)\n");
8283 seq_printf(m
, " (<level> is 0-7, "
8284 "auto, disengaged, full-speed)\n");
8289 if (fan_control_commands
& TPACPI_FAN_CMD_ENABLE
)
8290 seq_printf(m
, "commands:\tenable, disable\n"
8291 "commands:\twatchdog <timeout> (<timeout> "
8292 "is 0 (off), 1-120 (seconds))\n");
8294 if (fan_control_commands
& TPACPI_FAN_CMD_SPEED
)
8295 seq_printf(m
, "commands:\tspeed <speed>"
8296 " (<speed> is 0-65535)\n");
8301 static int fan_write_cmd_level(const char *cmd
, int *rc
)
8305 if (strlencmp(cmd
, "level auto") == 0)
8306 level
= TP_EC_FAN_AUTO
;
8307 else if ((strlencmp(cmd
, "level disengaged") == 0) |
8308 (strlencmp(cmd
, "level full-speed") == 0))
8309 level
= TP_EC_FAN_FULLSPEED
;
8310 else if (sscanf(cmd
, "level %d", &level
) != 1)
8313 *rc
= fan_set_level_safe(level
);
8315 printk(TPACPI_ERR
"level command accepted for unsupported "
8316 "access mode %d", fan_control_access_mode
);
8318 tpacpi_disclose_usertask("procfs fan",
8319 "set level to %d\n", level
);
8324 static int fan_write_cmd_enable(const char *cmd
, int *rc
)
8326 if (strlencmp(cmd
, "enable") != 0)
8329 *rc
= fan_set_enable();
8331 printk(TPACPI_ERR
"enable command accepted for unsupported "
8332 "access mode %d", fan_control_access_mode
);
8334 tpacpi_disclose_usertask("procfs fan", "enable\n");
8339 static int fan_write_cmd_disable(const char *cmd
, int *rc
)
8341 if (strlencmp(cmd
, "disable") != 0)
8344 *rc
= fan_set_disable();
8346 printk(TPACPI_ERR
"disable command accepted for unsupported "
8347 "access mode %d", fan_control_access_mode
);
8349 tpacpi_disclose_usertask("procfs fan", "disable\n");
8354 static int fan_write_cmd_speed(const char *cmd
, int *rc
)
8359 * Support speed <low> <medium> <high> ? */
8361 if (sscanf(cmd
, "speed %d", &speed
) != 1)
8364 *rc
= fan_set_speed(speed
);
8366 printk(TPACPI_ERR
"speed command accepted for unsupported "
8367 "access mode %d", fan_control_access_mode
);
8369 tpacpi_disclose_usertask("procfs fan",
8370 "set speed to %d\n", speed
);
8375 static int fan_write_cmd_watchdog(const char *cmd
, int *rc
)
8379 if (sscanf(cmd
, "watchdog %d", &interval
) != 1)
8382 if (interval
< 0 || interval
> 120)
8385 fan_watchdog_maxinterval
= interval
;
8386 tpacpi_disclose_usertask("procfs fan",
8387 "set watchdog timer to %d\n",
8394 static int fan_write(char *buf
)
8399 while (!rc
&& (cmd
= next_cmd(&buf
))) {
8400 if (!((fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) &&
8401 fan_write_cmd_level(cmd
, &rc
)) &&
8402 !((fan_control_commands
& TPACPI_FAN_CMD_ENABLE
) &&
8403 (fan_write_cmd_enable(cmd
, &rc
) ||
8404 fan_write_cmd_disable(cmd
, &rc
) ||
8405 fan_write_cmd_watchdog(cmd
, &rc
))) &&
8406 !((fan_control_commands
& TPACPI_FAN_CMD_SPEED
) &&
8407 fan_write_cmd_speed(cmd
, &rc
))
8411 fan_watchdog_reset();
8417 static struct ibm_struct fan_driver_data
= {
8422 .suspend
= fan_suspend
,
8423 .resume
= fan_resume
,
8426 /****************************************************************************
8427 ****************************************************************************
8431 ****************************************************************************
8432 ****************************************************************************/
8435 * HKEY event callout for other subdrivers go here
8436 * (yes, it is ugly, but it is quick, safe, and gets the job done
8438 static void tpacpi_driver_event(const unsigned int hkey_event
)
8440 if (ibm_backlight_device
) {
8441 switch (hkey_event
) {
8442 case TP_HKEY_EV_BRGHT_UP
:
8443 case TP_HKEY_EV_BRGHT_DOWN
:
8444 tpacpi_brightness_notify_change();
8448 switch (hkey_event
) {
8449 case TP_HKEY_EV_VOL_UP
:
8450 case TP_HKEY_EV_VOL_DOWN
:
8451 case TP_HKEY_EV_VOL_MUTE
:
8452 volume_alsa_notify_change();
8457 static void hotkey_driver_event(const unsigned int scancode
)
8459 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE
+ scancode
);
8462 /* sysfs name ---------------------------------------------------------- */
8463 static ssize_t
thinkpad_acpi_pdev_name_show(struct device
*dev
,
8464 struct device_attribute
*attr
,
8467 return snprintf(buf
, PAGE_SIZE
, "%s\n", TPACPI_NAME
);
8470 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name
=
8471 __ATTR(name
, S_IRUGO
, thinkpad_acpi_pdev_name_show
, NULL
);
8473 /* --------------------------------------------------------------------- */
8476 static struct proc_dir_entry
*proc_dir
;
8479 * Module and infrastructure proble, init and exit handling
8482 static int force_load
;
8484 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
8485 static const char * __init
str_supported(int is_supported
)
8487 static char text_unsupported
[] __initdata
= "not supported";
8489 return (is_supported
)? &text_unsupported
[4] : &text_unsupported
[0];
8491 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
8493 static void ibm_exit(struct ibm_struct
*ibm
)
8495 dbg_printk(TPACPI_DBG_EXIT
, "removing %s\n", ibm
->name
);
8497 list_del_init(&ibm
->all_drivers
);
8499 if (ibm
->flags
.acpi_notify_installed
) {
8500 dbg_printk(TPACPI_DBG_EXIT
,
8501 "%s: acpi_remove_notify_handler\n", ibm
->name
);
8503 acpi_remove_notify_handler(*ibm
->acpi
->handle
,
8505 dispatch_acpi_notify
);
8506 ibm
->flags
.acpi_notify_installed
= 0;
8507 ibm
->flags
.acpi_notify_installed
= 0;
8510 if (ibm
->flags
.proc_created
) {
8511 dbg_printk(TPACPI_DBG_EXIT
,
8512 "%s: remove_proc_entry\n", ibm
->name
);
8513 remove_proc_entry(ibm
->name
, proc_dir
);
8514 ibm
->flags
.proc_created
= 0;
8517 if (ibm
->flags
.acpi_driver_registered
) {
8518 dbg_printk(TPACPI_DBG_EXIT
,
8519 "%s: acpi_bus_unregister_driver\n", ibm
->name
);
8521 acpi_bus_unregister_driver(ibm
->acpi
->driver
);
8522 kfree(ibm
->acpi
->driver
);
8523 ibm
->acpi
->driver
= NULL
;
8524 ibm
->flags
.acpi_driver_registered
= 0;
8527 if (ibm
->flags
.init_called
&& ibm
->exit
) {
8529 ibm
->flags
.init_called
= 0;
8532 dbg_printk(TPACPI_DBG_INIT
, "finished removing %s\n", ibm
->name
);
8535 static int __init
ibm_init(struct ibm_init_struct
*iibm
)
8538 struct ibm_struct
*ibm
= iibm
->data
;
8539 struct proc_dir_entry
*entry
;
8541 BUG_ON(ibm
== NULL
);
8543 INIT_LIST_HEAD(&ibm
->all_drivers
);
8545 if (ibm
->flags
.experimental
&& !experimental
)
8548 dbg_printk(TPACPI_DBG_INIT
,
8549 "probing for %s\n", ibm
->name
);
8552 ret
= iibm
->init(iibm
);
8554 return 0; /* probe failed */
8558 ibm
->flags
.init_called
= 1;
8562 if (ibm
->acpi
->hid
) {
8563 ret
= register_tpacpi_subdriver(ibm
);
8568 if (ibm
->acpi
->notify
) {
8569 ret
= setup_acpi_notify(ibm
);
8570 if (ret
== -ENODEV
) {
8571 printk(TPACPI_NOTICE
"disabling subdriver %s\n",
8581 dbg_printk(TPACPI_DBG_INIT
,
8582 "%s installed\n", ibm
->name
);
8585 mode_t mode
= iibm
->base_procfs_mode
;
8591 entry
= proc_create_data(ibm
->name
, mode
, proc_dir
,
8592 &dispatch_proc_fops
, ibm
);
8594 printk(TPACPI_ERR
"unable to create proc entry %s\n",
8599 ibm
->flags
.proc_created
= 1;
8602 list_add_tail(&ibm
->all_drivers
, &tpacpi_all_drivers
);
8607 dbg_printk(TPACPI_DBG_INIT
,
8608 "%s: at error exit path with result %d\n",
8612 return (ret
< 0)? ret
: 0;
8617 static bool __pure __init
tpacpi_is_fw_digit(const char c
)
8619 return (c
>= '0' && c
<= '9') || (c
>= 'A' && c
<= 'Z');
8622 /* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
8623 static bool __pure __init
tpacpi_is_valid_fw_id(const char* const s
,
8626 return s
&& strlen(s
) >= 8 &&
8627 tpacpi_is_fw_digit(s
[0]) &&
8628 tpacpi_is_fw_digit(s
[1]) &&
8629 s
[2] == t
&& s
[3] == 'T' &&
8630 tpacpi_is_fw_digit(s
[4]) &&
8631 tpacpi_is_fw_digit(s
[5]) &&
8632 s
[6] == 'W' && s
[7] == 'W';
8635 /* returns 0 - probe ok, or < 0 - probe error.
8636 * Probe ok doesn't mean thinkpad found.
8637 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
8638 static int __must_check __init
get_thinkpad_model_data(
8639 struct thinkpad_id_data
*tp
)
8641 const struct dmi_device
*dev
= NULL
;
8642 char ec_fw_string
[18];
8648 memset(tp
, 0, sizeof(*tp
));
8650 if (dmi_name_in_vendors("IBM"))
8651 tp
->vendor
= PCI_VENDOR_ID_IBM
;
8652 else if (dmi_name_in_vendors("LENOVO"))
8653 tp
->vendor
= PCI_VENDOR_ID_LENOVO
;
8657 s
= dmi_get_system_info(DMI_BIOS_VERSION
);
8658 tp
->bios_version_str
= kstrdup(s
, GFP_KERNEL
);
8659 if (s
&& !tp
->bios_version_str
)
8662 /* Really ancient ThinkPad 240X will fail this, which is fine */
8663 if (!tpacpi_is_valid_fw_id(tp
->bios_version_str
, 'E'))
8666 tp
->bios_model
= tp
->bios_version_str
[0]
8667 | (tp
->bios_version_str
[1] << 8);
8668 tp
->bios_release
= (tp
->bios_version_str
[4] << 8)
8669 | tp
->bios_version_str
[5];
8672 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
8673 * X32 or newer, all Z series; Some models must have an
8674 * up-to-date BIOS or they will not be detected.
8676 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
8678 while ((dev
= dmi_find_device(DMI_DEV_TYPE_OEM_STRING
, NULL
, dev
))) {
8679 if (sscanf(dev
->name
,
8680 "IBM ThinkPad Embedded Controller -[%17c",
8681 ec_fw_string
) == 1) {
8682 ec_fw_string
[sizeof(ec_fw_string
) - 1] = 0;
8683 ec_fw_string
[strcspn(ec_fw_string
, " ]")] = 0;
8685 tp
->ec_version_str
= kstrdup(ec_fw_string
, GFP_KERNEL
);
8686 if (!tp
->ec_version_str
)
8689 if (tpacpi_is_valid_fw_id(ec_fw_string
, 'H')) {
8690 tp
->ec_model
= ec_fw_string
[0]
8691 | (ec_fw_string
[1] << 8);
8692 tp
->ec_release
= (ec_fw_string
[4] << 8)
8695 printk(TPACPI_NOTICE
8696 "ThinkPad firmware release %s "
8697 "doesn't match the known patterns\n",
8699 printk(TPACPI_NOTICE
8700 "please report this to %s\n",
8707 s
= dmi_get_system_info(DMI_PRODUCT_VERSION
);
8708 if (s
&& !strnicmp(s
, "ThinkPad", 8)) {
8709 tp
->model_str
= kstrdup(s
, GFP_KERNEL
);
8714 s
= dmi_get_system_info(DMI_PRODUCT_NAME
);
8715 tp
->nummodel_str
= kstrdup(s
, GFP_KERNEL
);
8716 if (s
&& !tp
->nummodel_str
)
8722 static int __init
probe_for_thinkpad(void)
8729 /* It would be dangerous to run the driver in this case */
8730 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
8734 * Non-ancient models have better DMI tagging, but very old models
8735 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
8737 is_thinkpad
= (thinkpad_id
.model_str
!= NULL
) ||
8738 (thinkpad_id
.ec_model
!= 0) ||
8739 tpacpi_is_fw_known();
8741 /* ec is required because many other handles are relative to it */
8742 TPACPI_ACPIHANDLE_INIT(ec
);
8746 "Not yet supported ThinkPad detected!\n");
8750 if (!is_thinkpad
&& !force_load
)
8756 static void __init
thinkpad_acpi_init_banner(void)
8758 printk(TPACPI_INFO
"%s v%s\n", TPACPI_DESC
, TPACPI_VERSION
);
8759 printk(TPACPI_INFO
"%s\n", TPACPI_URL
);
8761 printk(TPACPI_INFO
"ThinkPad BIOS %s, EC %s\n",
8762 (thinkpad_id
.bios_version_str
) ?
8763 thinkpad_id
.bios_version_str
: "unknown",
8764 (thinkpad_id
.ec_version_str
) ?
8765 thinkpad_id
.ec_version_str
: "unknown");
8767 BUG_ON(!thinkpad_id
.vendor
);
8769 if (thinkpad_id
.model_str
)
8770 printk(TPACPI_INFO
"%s %s, model %s\n",
8771 (thinkpad_id
.vendor
== PCI_VENDOR_ID_IBM
) ?
8772 "IBM" : ((thinkpad_id
.vendor
==
8773 PCI_VENDOR_ID_LENOVO
) ?
8774 "Lenovo" : "Unknown vendor"),
8775 thinkpad_id
.model_str
,
8776 (thinkpad_id
.nummodel_str
) ?
8777 thinkpad_id
.nummodel_str
: "unknown");
8780 /* Module init, exit, parameters */
8782 static struct ibm_init_struct ibms_init
[] __initdata
= {
8784 .data
= &thinkpad_acpi_driver_data
,
8787 .init
= hotkey_init
,
8788 .data
= &hotkey_driver_data
,
8791 .init
= bluetooth_init
,
8792 .data
= &bluetooth_driver_data
,
8796 .data
= &wan_driver_data
,
8800 .data
= &uwb_driver_data
,
8802 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
8805 .base_procfs_mode
= S_IRUSR
,
8806 .data
= &video_driver_data
,
8811 .data
= &light_driver_data
,
8815 .data
= &cmos_driver_data
,
8819 .data
= &led_driver_data
,
8823 .data
= &beep_driver_data
,
8826 .init
= thermal_init
,
8827 .data
= &thermal_driver_data
,
8830 .data
= &ecdump_driver_data
,
8833 .init
= brightness_init
,
8834 .data
= &brightness_driver_data
,
8837 .init
= volume_init
,
8838 .data
= &volume_driver_data
,
8842 .data
= &fan_driver_data
,
8846 static int __init
set_ibm_param(const char *val
, struct kernel_param
*kp
)
8849 struct ibm_struct
*ibm
;
8851 if (!kp
|| !kp
->name
|| !val
)
8854 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
8855 ibm
= ibms_init
[i
].data
;
8856 WARN_ON(ibm
== NULL
);
8858 if (!ibm
|| !ibm
->name
)
8861 if (strcmp(ibm
->name
, kp
->name
) == 0 && ibm
->write
) {
8862 if (strlen(val
) > sizeof(ibms_init
[i
].param
) - 2)
8864 strcpy(ibms_init
[i
].param
, val
);
8865 strcat(ibms_init
[i
].param
, ",");
8873 module_param(experimental
, int, 0444);
8874 MODULE_PARM_DESC(experimental
,
8875 "Enables experimental features when non-zero");
8877 module_param_named(debug
, dbg_level
, uint
, 0);
8878 MODULE_PARM_DESC(debug
, "Sets debug level bit-mask");
8880 module_param(force_load
, bool, 0444);
8881 MODULE_PARM_DESC(force_load
,
8882 "Attempts to load the driver even on a "
8883 "mis-identified ThinkPad when true");
8885 module_param_named(fan_control
, fan_control_allowed
, bool, 0444);
8886 MODULE_PARM_DESC(fan_control
,
8887 "Enables setting fan parameters features when true");
8889 module_param_named(brightness_mode
, brightness_mode
, uint
, 0444);
8890 MODULE_PARM_DESC(brightness_mode
,
8891 "Selects brightness control strategy: "
8892 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
8894 module_param(brightness_enable
, uint
, 0444);
8895 MODULE_PARM_DESC(brightness_enable
,
8896 "Enables backlight control when 1, disables when 0");
8898 module_param(hotkey_report_mode
, uint
, 0444);
8899 MODULE_PARM_DESC(hotkey_report_mode
,
8900 "used for backwards compatibility with userspace, "
8901 "see documentation");
8903 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
8904 module_param_named(volume_mode
, volume_mode
, uint
, 0444);
8905 MODULE_PARM_DESC(volume_mode
,
8906 "Selects volume control strategy: "
8907 "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
8909 module_param_named(volume_capabilities
, volume_capabilities
, uint
, 0444);
8910 MODULE_PARM_DESC(volume_capabilities
,
8911 "Selects the mixer capabilites: "
8912 "0=auto, 1=volume and mute, 2=mute only");
8914 module_param_named(volume_control
, volume_control_allowed
, bool, 0444);
8915 MODULE_PARM_DESC(volume_control
,
8916 "Enables software override for the console audio "
8917 "control when true");
8919 /* ALSA module API parameters */
8920 module_param_named(index
, alsa_index
, int, 0444);
8921 MODULE_PARM_DESC(index
, "ALSA index for the ACPI EC Mixer");
8922 module_param_named(id
, alsa_id
, charp
, 0444);
8923 MODULE_PARM_DESC(id
, "ALSA id for the ACPI EC Mixer");
8924 module_param_named(enable
, alsa_enable
, bool, 0444);
8925 MODULE_PARM_DESC(enable
, "Enable the ALSA interface for the ACPI EC Mixer");
8926 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
8928 #define TPACPI_PARAM(feature) \
8929 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
8930 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
8931 "at module load, see documentation")
8933 TPACPI_PARAM(hotkey
);
8934 TPACPI_PARAM(bluetooth
);
8935 TPACPI_PARAM(video
);
8936 TPACPI_PARAM(light
);
8940 TPACPI_PARAM(ecdump
);
8941 TPACPI_PARAM(brightness
);
8942 TPACPI_PARAM(volume
);
8945 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
8946 module_param(dbg_wlswemul
, uint
, 0444);
8947 MODULE_PARM_DESC(dbg_wlswemul
, "Enables WLSW emulation");
8948 module_param_named(wlsw_state
, tpacpi_wlsw_emulstate
, bool, 0);
8949 MODULE_PARM_DESC(wlsw_state
,
8950 "Initial state of the emulated WLSW switch");
8952 module_param(dbg_bluetoothemul
, uint
, 0444);
8953 MODULE_PARM_DESC(dbg_bluetoothemul
, "Enables bluetooth switch emulation");
8954 module_param_named(bluetooth_state
, tpacpi_bluetooth_emulstate
, bool, 0);
8955 MODULE_PARM_DESC(bluetooth_state
,
8956 "Initial state of the emulated bluetooth switch");
8958 module_param(dbg_wwanemul
, uint
, 0444);
8959 MODULE_PARM_DESC(dbg_wwanemul
, "Enables WWAN switch emulation");
8960 module_param_named(wwan_state
, tpacpi_wwan_emulstate
, bool, 0);
8961 MODULE_PARM_DESC(wwan_state
,
8962 "Initial state of the emulated WWAN switch");
8964 module_param(dbg_uwbemul
, uint
, 0444);
8965 MODULE_PARM_DESC(dbg_uwbemul
, "Enables UWB switch emulation");
8966 module_param_named(uwb_state
, tpacpi_uwb_emulstate
, bool, 0);
8967 MODULE_PARM_DESC(uwb_state
,
8968 "Initial state of the emulated UWB switch");
8971 static void thinkpad_acpi_module_exit(void)
8973 struct ibm_struct
*ibm
, *itmp
;
8975 tpacpi_lifecycle
= TPACPI_LIFE_EXITING
;
8977 list_for_each_entry_safe_reverse(ibm
, itmp
,
8978 &tpacpi_all_drivers
,
8983 dbg_printk(TPACPI_DBG_INIT
, "finished subdriver exit path...\n");
8985 if (tpacpi_inputdev
) {
8986 if (tp_features
.input_device_registered
)
8987 input_unregister_device(tpacpi_inputdev
);
8989 input_free_device(tpacpi_inputdev
);
8993 hwmon_device_unregister(tpacpi_hwmon
);
8995 if (tp_features
.sensors_pdev_attrs_registered
)
8996 device_remove_file(&tpacpi_sensors_pdev
->dev
,
8997 &dev_attr_thinkpad_acpi_pdev_name
);
8998 if (tpacpi_sensors_pdev
)
8999 platform_device_unregister(tpacpi_sensors_pdev
);
9001 platform_device_unregister(tpacpi_pdev
);
9003 if (tp_features
.sensors_pdrv_attrs_registered
)
9004 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver
.driver
);
9005 if (tp_features
.platform_drv_attrs_registered
)
9006 tpacpi_remove_driver_attributes(&tpacpi_pdriver
.driver
);
9008 if (tp_features
.sensors_pdrv_registered
)
9009 platform_driver_unregister(&tpacpi_hwmon_pdriver
);
9011 if (tp_features
.platform_drv_registered
)
9012 platform_driver_unregister(&tpacpi_pdriver
);
9015 remove_proc_entry(TPACPI_PROC_DIR
, acpi_root_dir
);
9018 destroy_workqueue(tpacpi_wq
);
9020 kfree(thinkpad_id
.bios_version_str
);
9021 kfree(thinkpad_id
.ec_version_str
);
9022 kfree(thinkpad_id
.model_str
);
9026 static int __init
thinkpad_acpi_module_init(void)
9030 tpacpi_lifecycle
= TPACPI_LIFE_INIT
;
9032 /* Parameter checking */
9033 if (hotkey_report_mode
> 2)
9036 /* Driver-level probe */
9038 ret
= get_thinkpad_model_data(&thinkpad_id
);
9041 "unable to get DMI data: %d\n", ret
);
9042 thinkpad_acpi_module_exit();
9045 ret
= probe_for_thinkpad();
9047 thinkpad_acpi_module_exit();
9051 /* Driver initialization */
9053 thinkpad_acpi_init_banner();
9054 tpacpi_check_outdated_fw();
9056 TPACPI_ACPIHANDLE_INIT(ecrd
);
9057 TPACPI_ACPIHANDLE_INIT(ecwr
);
9059 tpacpi_wq
= create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME
);
9061 thinkpad_acpi_module_exit();
9065 proc_dir
= proc_mkdir(TPACPI_PROC_DIR
, acpi_root_dir
);
9068 "unable to create proc dir " TPACPI_PROC_DIR
);
9069 thinkpad_acpi_module_exit();
9073 ret
= platform_driver_register(&tpacpi_pdriver
);
9076 "unable to register main platform driver\n");
9077 thinkpad_acpi_module_exit();
9080 tp_features
.platform_drv_registered
= 1;
9082 ret
= platform_driver_register(&tpacpi_hwmon_pdriver
);
9085 "unable to register hwmon platform driver\n");
9086 thinkpad_acpi_module_exit();
9089 tp_features
.sensors_pdrv_registered
= 1;
9091 ret
= tpacpi_create_driver_attributes(&tpacpi_pdriver
.driver
);
9093 tp_features
.platform_drv_attrs_registered
= 1;
9094 ret
= tpacpi_create_driver_attributes(
9095 &tpacpi_hwmon_pdriver
.driver
);
9099 "unable to create sysfs driver attributes\n");
9100 thinkpad_acpi_module_exit();
9103 tp_features
.sensors_pdrv_attrs_registered
= 1;
9106 /* Device initialization */
9107 tpacpi_pdev
= platform_device_register_simple(TPACPI_DRVR_NAME
, -1,
9109 if (IS_ERR(tpacpi_pdev
)) {
9110 ret
= PTR_ERR(tpacpi_pdev
);
9112 printk(TPACPI_ERR
"unable to register platform device\n");
9113 thinkpad_acpi_module_exit();
9116 tpacpi_sensors_pdev
= platform_device_register_simple(
9117 TPACPI_HWMON_DRVR_NAME
,
9119 if (IS_ERR(tpacpi_sensors_pdev
)) {
9120 ret
= PTR_ERR(tpacpi_sensors_pdev
);
9121 tpacpi_sensors_pdev
= NULL
;
9123 "unable to register hwmon platform device\n");
9124 thinkpad_acpi_module_exit();
9127 ret
= device_create_file(&tpacpi_sensors_pdev
->dev
,
9128 &dev_attr_thinkpad_acpi_pdev_name
);
9131 "unable to create sysfs hwmon device attributes\n");
9132 thinkpad_acpi_module_exit();
9135 tp_features
.sensors_pdev_attrs_registered
= 1;
9136 tpacpi_hwmon
= hwmon_device_register(&tpacpi_sensors_pdev
->dev
);
9137 if (IS_ERR(tpacpi_hwmon
)) {
9138 ret
= PTR_ERR(tpacpi_hwmon
);
9139 tpacpi_hwmon
= NULL
;
9140 printk(TPACPI_ERR
"unable to register hwmon device\n");
9141 thinkpad_acpi_module_exit();
9144 mutex_init(&tpacpi_inputdev_send_mutex
);
9145 tpacpi_inputdev
= input_allocate_device();
9146 if (!tpacpi_inputdev
) {
9147 printk(TPACPI_ERR
"unable to allocate input device\n");
9148 thinkpad_acpi_module_exit();
9151 /* Prepare input device, but don't register */
9152 tpacpi_inputdev
->name
= "ThinkPad Extra Buttons";
9153 tpacpi_inputdev
->phys
= TPACPI_DRVR_NAME
"/input0";
9154 tpacpi_inputdev
->id
.bustype
= BUS_HOST
;
9155 tpacpi_inputdev
->id
.vendor
= thinkpad_id
.vendor
;
9156 tpacpi_inputdev
->id
.product
= TPACPI_HKEY_INPUT_PRODUCT
;
9157 tpacpi_inputdev
->id
.version
= TPACPI_HKEY_INPUT_VERSION
;
9158 tpacpi_inputdev
->dev
.parent
= &tpacpi_pdev
->dev
;
9161 /* Init subdriver dependencies */
9162 tpacpi_detect_brightness_capabilities();
9164 /* Init subdrivers */
9165 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
9166 ret
= ibm_init(&ibms_init
[i
]);
9167 if (ret
>= 0 && *ibms_init
[i
].param
)
9168 ret
= ibms_init
[i
].data
->write(ibms_init
[i
].param
);
9170 thinkpad_acpi_module_exit();
9175 tpacpi_lifecycle
= TPACPI_LIFE_RUNNING
;
9177 ret
= input_register_device(tpacpi_inputdev
);
9179 printk(TPACPI_ERR
"unable to register input device\n");
9180 thinkpad_acpi_module_exit();
9183 tp_features
.input_device_registered
= 1;
9189 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME
);
9192 * This will autoload the driver in almost every ThinkPad
9193 * in widespread use.
9195 * Only _VERY_ old models, like the 240, 240x and 570 lack
9196 * the HKEY event interface.
9198 MODULE_DEVICE_TABLE(acpi
, ibm_htk_device_ids
);
9201 * DMI matching for module autoloading
9203 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
9204 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
9206 * Only models listed in thinkwiki will be supported, so add yours
9207 * if it is not there yet.
9209 #define IBM_BIOS_MODULE_ALIAS(__type) \
9210 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
9212 /* Ancient thinkpad BIOSes have to be identified by
9213 * BIOS type or model number, and there are far less
9214 * BIOS types than model numbers... */
9215 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
9217 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
9218 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
9219 MODULE_DESCRIPTION(TPACPI_DESC
);
9220 MODULE_VERSION(TPACPI_VERSION
);
9221 MODULE_LICENSE("GPL");
9223 module_init(thinkpad_acpi_module_init
);
9224 module_exit(thinkpad_acpi_module_exit
);