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 "0.23"
25 #define TPACPI_SYSFS_VERSION 0x020500
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/sysfs.h>
65 #include <linux/backlight.h>
67 #include <linux/platform_device.h>
68 #include <linux/hwmon.h>
69 #include <linux/hwmon-sysfs.h>
70 #include <linux/input.h>
71 #include <linux/leds.h>
72 #include <linux/rfkill.h>
73 #include <asm/uaccess.h>
75 #include <linux/dmi.h>
76 #include <linux/jiffies.h>
77 #include <linux/workqueue.h>
79 #include <acpi/acpi_drivers.h>
81 #include <linux/pci_ids.h>
84 /* ThinkPad CMOS commands */
85 #define TP_CMOS_VOLUME_DOWN 0
86 #define TP_CMOS_VOLUME_UP 1
87 #define TP_CMOS_VOLUME_MUTE 2
88 #define TP_CMOS_BRIGHTNESS_UP 4
89 #define TP_CMOS_BRIGHTNESS_DOWN 5
90 #define TP_CMOS_THINKLIGHT_ON 12
91 #define TP_CMOS_THINKLIGHT_OFF 13
95 TP_NVRAM_ADDR_HK2
= 0x57,
96 TP_NVRAM_ADDR_THINKLIGHT
= 0x58,
97 TP_NVRAM_ADDR_VIDEO
= 0x59,
98 TP_NVRAM_ADDR_BRIGHTNESS
= 0x5e,
99 TP_NVRAM_ADDR_MIXER
= 0x60,
102 /* NVRAM bit masks */
104 TP_NVRAM_MASK_HKT_THINKPAD
= 0x08,
105 TP_NVRAM_MASK_HKT_ZOOM
= 0x20,
106 TP_NVRAM_MASK_HKT_DISPLAY
= 0x40,
107 TP_NVRAM_MASK_HKT_HIBERNATE
= 0x80,
108 TP_NVRAM_MASK_THINKLIGHT
= 0x10,
109 TP_NVRAM_MASK_HKT_DISPEXPND
= 0x30,
110 TP_NVRAM_MASK_HKT_BRIGHTNESS
= 0x20,
111 TP_NVRAM_MASK_LEVEL_BRIGHTNESS
= 0x0f,
112 TP_NVRAM_POS_LEVEL_BRIGHTNESS
= 0,
113 TP_NVRAM_MASK_MUTE
= 0x40,
114 TP_NVRAM_MASK_HKT_VOLUME
= 0x80,
115 TP_NVRAM_MASK_LEVEL_VOLUME
= 0x0f,
116 TP_NVRAM_POS_LEVEL_VOLUME
= 0,
120 #define TPACPI_ACPI_HKEY_HID "IBM0068"
123 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
124 #define TPACPI_HKEY_INPUT_VERSION 0x4101
126 /* ACPI \WGSV commands */
128 TP_ACPI_WGSV_GET_STATE
= 0x01, /* Get state information */
129 TP_ACPI_WGSV_PWR_ON_ON_RESUME
= 0x02, /* Resume WWAN powered on */
130 TP_ACPI_WGSV_PWR_OFF_ON_RESUME
= 0x03, /* Resume WWAN powered off */
131 TP_ACPI_WGSV_SAVE_STATE
= 0x04, /* Save state for S4/S5 */
134 /* TP_ACPI_WGSV_GET_STATE bits */
136 TP_ACPI_WGSV_STATE_WWANEXIST
= 0x0001, /* WWAN hw available */
137 TP_ACPI_WGSV_STATE_WWANPWR
= 0x0002, /* WWAN radio enabled */
138 TP_ACPI_WGSV_STATE_WWANPWRRES
= 0x0004, /* WWAN state at resume */
139 TP_ACPI_WGSV_STATE_WWANBIOSOFF
= 0x0008, /* WWAN disabled in BIOS */
140 TP_ACPI_WGSV_STATE_BLTHEXIST
= 0x0001, /* BLTH hw available */
141 TP_ACPI_WGSV_STATE_BLTHPWR
= 0x0002, /* BLTH radio enabled */
142 TP_ACPI_WGSV_STATE_BLTHPWRRES
= 0x0004, /* BLTH state at resume */
143 TP_ACPI_WGSV_STATE_BLTHBIOSOFF
= 0x0008, /* BLTH disabled in BIOS */
144 TP_ACPI_WGSV_STATE_UWBEXIST
= 0x0010, /* UWB hw available */
145 TP_ACPI_WGSV_STATE_UWBPWR
= 0x0020, /* UWB radio enabled */
149 enum tpacpi_hkey_event_t
{
151 TP_HKEY_EV_HOTKEY_BASE
= 0x1001, /* first hotkey (FN+F1) */
152 TP_HKEY_EV_BRGHT_UP
= 0x1010, /* Brightness up */
153 TP_HKEY_EV_BRGHT_DOWN
= 0x1011, /* Brightness down */
154 TP_HKEY_EV_VOL_UP
= 0x1015, /* Volume up or unmute */
155 TP_HKEY_EV_VOL_DOWN
= 0x1016, /* Volume down or unmute */
156 TP_HKEY_EV_VOL_MUTE
= 0x1017, /* Mixer output mute */
158 /* Reasons for waking up from S3/S4 */
159 TP_HKEY_EV_WKUP_S3_UNDOCK
= 0x2304, /* undock requested, S3 */
160 TP_HKEY_EV_WKUP_S4_UNDOCK
= 0x2404, /* undock requested, S4 */
161 TP_HKEY_EV_WKUP_S3_BAYEJ
= 0x2305, /* bay ejection req, S3 */
162 TP_HKEY_EV_WKUP_S4_BAYEJ
= 0x2405, /* bay ejection req, S4 */
163 TP_HKEY_EV_WKUP_S3_BATLOW
= 0x2313, /* battery empty, S3 */
164 TP_HKEY_EV_WKUP_S4_BATLOW
= 0x2413, /* battery empty, S4 */
166 /* Auto-sleep after eject request */
167 TP_HKEY_EV_BAYEJ_ACK
= 0x3003, /* bay ejection complete */
168 TP_HKEY_EV_UNDOCK_ACK
= 0x4003, /* undock complete */
170 /* Misc bay events */
171 TP_HKEY_EV_OPTDRV_EJ
= 0x3006, /* opt. drive tray ejected */
173 /* User-interface events */
174 TP_HKEY_EV_LID_CLOSE
= 0x5001, /* laptop lid closed */
175 TP_HKEY_EV_LID_OPEN
= 0x5002, /* laptop lid opened */
176 TP_HKEY_EV_TABLET_TABLET
= 0x5009, /* tablet swivel up */
177 TP_HKEY_EV_TABLET_NOTEBOOK
= 0x500a, /* tablet swivel down */
178 TP_HKEY_EV_PEN_INSERTED
= 0x500b, /* tablet pen inserted */
179 TP_HKEY_EV_PEN_REMOVED
= 0x500c, /* tablet pen removed */
180 TP_HKEY_EV_BRGHT_CHANGED
= 0x5010, /* backlight control event */
183 TP_HKEY_EV_ALARM_BAT_HOT
= 0x6011, /* battery too hot */
184 TP_HKEY_EV_ALARM_BAT_XHOT
= 0x6012, /* battery critically hot */
185 TP_HKEY_EV_ALARM_SENSOR_HOT
= 0x6021, /* sensor too hot */
186 TP_HKEY_EV_ALARM_SENSOR_XHOT
= 0x6022, /* sensor critically hot */
187 TP_HKEY_EV_THM_TABLE_CHANGED
= 0x6030, /* thermal table changed */
190 TP_HKEY_EV_RFKILL_CHANGED
= 0x7000, /* rfkill switch changed */
193 /****************************************************************************
197 #define TPACPI_NAME "thinkpad"
198 #define TPACPI_DESC "ThinkPad ACPI Extras"
199 #define TPACPI_FILE TPACPI_NAME "_acpi"
200 #define TPACPI_URL "http://ibm-acpi.sf.net/"
201 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
203 #define TPACPI_PROC_DIR "ibm"
204 #define TPACPI_ACPI_EVENT_PREFIX "ibm"
205 #define TPACPI_DRVR_NAME TPACPI_FILE
206 #define TPACPI_DRVR_SHORTNAME "tpacpi"
207 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
209 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
210 #define TPACPI_WORKQUEUE_NAME "ktpacpid"
212 #define TPACPI_MAX_ACPI_ARGS 3
215 #define TPACPI_LOG TPACPI_FILE ": "
216 #define TPACPI_EMERG KERN_EMERG TPACPI_LOG
217 #define TPACPI_ALERT KERN_ALERT TPACPI_LOG
218 #define TPACPI_CRIT KERN_CRIT TPACPI_LOG
219 #define TPACPI_ERR KERN_ERR TPACPI_LOG
220 #define TPACPI_WARN KERN_WARNING TPACPI_LOG
221 #define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
222 #define TPACPI_INFO KERN_INFO TPACPI_LOG
223 #define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
225 /* Debugging printk groups */
226 #define TPACPI_DBG_ALL 0xffff
227 #define TPACPI_DBG_DISCLOSETASK 0x8000
228 #define TPACPI_DBG_INIT 0x0001
229 #define TPACPI_DBG_EXIT 0x0002
230 #define TPACPI_DBG_RFKILL 0x0004
231 #define TPACPI_DBG_HKEY 0x0008
232 #define TPACPI_DBG_FAN 0x0010
233 #define TPACPI_DBG_BRGHT 0x0020
235 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
236 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
237 #define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
240 /****************************************************************************
241 * Driver-wide structs and misc. variables
246 struct tp_acpi_drv_struct
{
247 const struct acpi_device_id
*hid
;
248 struct acpi_driver
*driver
;
250 void (*notify
) (struct ibm_struct
*, u32
);
253 struct acpi_device
*device
;
259 int (*read
) (char *);
260 int (*write
) (char *);
262 void (*resume
) (void);
263 void (*suspend
) (pm_message_t state
);
264 void (*shutdown
) (void);
266 struct list_head all_drivers
;
268 struct tp_acpi_drv_struct
*acpi
;
271 u8 acpi_driver_registered
:1;
272 u8 acpi_notify_installed
:1;
279 struct ibm_init_struct
{
282 int (*init
) (struct ibm_init_struct
*);
283 struct ibm_struct
*data
;
294 u32 bright_16levels
:1;
295 u32 bright_acpimode
:1;
298 u32 fan_ctrl_status_undef
:1;
300 u32 beep_needs_two_args
:1;
301 u32 input_device_registered
:1;
302 u32 platform_drv_registered
:1;
303 u32 platform_drv_attrs_registered
:1;
304 u32 sensors_pdrv_registered
:1;
305 u32 sensors_pdrv_attrs_registered
:1;
306 u32 sensors_pdev_attrs_registered
:1;
307 u32 hotkey_poll_active
:1;
311 u16 hotkey_mask_ff
:1;
314 struct thinkpad_id_data
{
315 unsigned int vendor
; /* ThinkPad vendor:
316 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
318 char *bios_version_str
; /* Something like 1ZET51WW (1.03z) */
319 char *ec_version_str
; /* Something like 1ZHT51WW-1.04a */
321 u16 bios_model
; /* 1Y = 0x5931, 0 = unknown */
323 u16 bios_release
; /* 1ZETK1WW = 0x314b, 0 = unknown */
326 char *model_str
; /* ThinkPad T43 */
327 char *nummodel_str
; /* 9384A9C for a 9384-A9C model */
329 static struct thinkpad_id_data thinkpad_id
;
332 TPACPI_LIFE_INIT
= 0,
337 static int experimental
;
338 static u32 dbg_level
;
340 static struct workqueue_struct
*tpacpi_wq
;
348 /* Special LED class that can defer work */
349 struct tpacpi_led_classdev
{
350 struct led_classdev led_classdev
;
351 struct work_struct work
;
352 enum led_status_t new_state
;
356 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
357 static int dbg_wlswemul
;
358 static int tpacpi_wlsw_emulstate
;
359 static int dbg_bluetoothemul
;
360 static int tpacpi_bluetooth_emulstate
;
361 static int dbg_wwanemul
;
362 static int tpacpi_wwan_emulstate
;
363 static int dbg_uwbemul
;
364 static int tpacpi_uwb_emulstate
;
368 /*************************************************************************
372 #define dbg_printk(a_dbg_level, format, arg...) \
373 do { if (dbg_level & (a_dbg_level)) \
374 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
377 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
378 #define vdbg_printk dbg_printk
379 static const char *str_supported(int is_supported
);
381 #define vdbg_printk(a_dbg_level, format, arg...) \
385 static void tpacpi_log_usertask(const char * const what
)
387 printk(TPACPI_DEBUG
"%s: access by process with PID %d\n",
388 what
, task_tgid_vnr(current
));
391 #define tpacpi_disclose_usertask(what, format, arg...) \
394 (dbg_level & TPACPI_DBG_DISCLOSETASK) && \
395 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
396 printk(TPACPI_DEBUG "%s: PID %d: " format, \
397 what, task_tgid_vnr(current), ## arg); \
402 * Quirk handling helpers
404 * ThinkPad IDs and versions seen in the field so far
405 * are two-characters from the set [0-9A-Z], i.e. base 36.
407 * We use values well outside that range as specials.
410 #define TPACPI_MATCH_ANY 0xffffU
411 #define TPACPI_MATCH_UNKNOWN 0U
413 /* TPID('1', 'Y') == 0x5931 */
414 #define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
416 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \
417 { .vendor = PCI_VENDOR_ID_IBM, \
418 .bios = TPID(__id1, __id2), \
419 .ec = TPACPI_MATCH_ANY, \
420 .quirks = (__quirk) }
422 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \
423 { .vendor = PCI_VENDOR_ID_LENOVO, \
424 .bios = TPID(__id1, __id2), \
425 .ec = TPACPI_MATCH_ANY, \
426 .quirks = (__quirk) }
428 struct tpacpi_quirk
{
432 unsigned long quirks
;
436 * tpacpi_check_quirks() - search BIOS/EC version on a list
437 * @qlist: array of &struct tpacpi_quirk
438 * @qlist_size: number of elements in @qlist
440 * Iterates over a quirks list until one is found that matches the
441 * ThinkPad's vendor, BIOS and EC model.
443 * Returns 0 if nothing matches, otherwise returns the quirks field of
444 * the matching &struct tpacpi_quirk entry.
446 * The match criteria is: vendor, ec and bios much match.
448 static unsigned long __init
tpacpi_check_quirks(
449 const struct tpacpi_quirk
*qlist
,
450 unsigned int qlist_size
)
453 if ((qlist
->vendor
== thinkpad_id
.vendor
||
454 qlist
->vendor
== TPACPI_MATCH_ANY
) &&
455 (qlist
->bios
== thinkpad_id
.bios_model
||
456 qlist
->bios
== TPACPI_MATCH_ANY
) &&
457 (qlist
->ec
== thinkpad_id
.ec_model
||
458 qlist
->ec
== TPACPI_MATCH_ANY
))
459 return qlist
->quirks
;
468 /****************************************************************************
469 ****************************************************************************
471 * ACPI Helpers and device model
473 ****************************************************************************
474 ****************************************************************************/
476 /*************************************************************************
480 static acpi_handle root_handle
;
482 #define TPACPI_HANDLE(object, parent, paths...) \
483 static acpi_handle object##_handle; \
484 static acpi_handle *object##_parent = &parent##_handle; \
485 static char *object##_path; \
486 static char *object##_paths[] = { paths }
488 TPACPI_HANDLE(ec
, root
, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
489 "\\_SB.PCI.ISA.EC", /* 570 */
490 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
491 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
492 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
493 "\\_SB.PCI0.ICH3.EC0", /* R31 */
494 "\\_SB.PCI0.LPC.EC", /* all others */
497 TPACPI_HANDLE(ecrd
, ec
, "ECRD"); /* 570 */
498 TPACPI_HANDLE(ecwr
, ec
, "ECWR"); /* 570 */
500 TPACPI_HANDLE(cmos
, root
, "\\UCMS", /* R50, R50e, R50p, R51, */
502 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
503 "\\CMS", /* R40, R40e */
506 TPACPI_HANDLE(hkey
, ec
, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
507 "^HKEY", /* R30, R31 */
508 "HKEY", /* all others */
511 TPACPI_HANDLE(vid
, root
, "\\_SB.PCI.AGP.VGA", /* 570 */
512 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
513 "\\_SB.PCI0.VID0", /* 770e */
514 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
515 "\\_SB.PCI0.AGP.VID", /* all others */
519 /*************************************************************************
523 static int acpi_evalf(acpi_handle handle
,
524 void *res
, char *method
, char *fmt
, ...)
527 struct acpi_object_list params
;
528 union acpi_object in_objs
[TPACPI_MAX_ACPI_ARGS
];
529 struct acpi_buffer result
, *resultp
;
530 union acpi_object out_obj
;
538 printk(TPACPI_ERR
"acpi_evalf() called with empty format\n");
551 params
.pointer
= &in_objs
[0];
558 in_objs
[params
.count
].integer
.value
= va_arg(ap
, int);
559 in_objs
[params
.count
++].type
= ACPI_TYPE_INTEGER
;
561 /* add more types as needed */
563 printk(TPACPI_ERR
"acpi_evalf() called "
564 "with invalid format character '%c'\n", c
);
570 if (res_type
!= 'v') {
571 result
.length
= sizeof(out_obj
);
572 result
.pointer
= &out_obj
;
577 status
= acpi_evaluate_object(handle
, method
, ¶ms
, resultp
);
582 *(int *)res
= out_obj
.integer
.value
;
583 success
= status
== AE_OK
&& out_obj
.type
== ACPI_TYPE_INTEGER
;
586 success
= status
== AE_OK
;
588 /* add more types as needed */
590 printk(TPACPI_ERR
"acpi_evalf() called "
591 "with invalid format character '%c'\n", res_type
);
595 if (!success
&& !quiet
)
596 printk(TPACPI_ERR
"acpi_evalf(%s, %s, ...) failed: %d\n",
597 method
, fmt0
, status
);
602 static int acpi_ec_read(int i
, u8
*p
)
607 if (!acpi_evalf(ecrd_handle
, &v
, NULL
, "dd", i
))
611 if (ec_read(i
, p
) < 0)
618 static int acpi_ec_write(int i
, u8 v
)
621 if (!acpi_evalf(ecwr_handle
, NULL
, NULL
, "vdd", i
, v
))
624 if (ec_write(i
, v
) < 0)
631 static int issue_thinkpad_cmos_command(int cmos_cmd
)
636 if (!acpi_evalf(cmos_handle
, NULL
, NULL
, "vd", cmos_cmd
))
642 /*************************************************************************
646 #define TPACPI_ACPIHANDLE_INIT(object) \
647 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
648 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
650 static void drv_acpi_handle_init(char *name
,
651 acpi_handle
*handle
, acpi_handle parent
,
652 char **paths
, int num_paths
, char **path
)
657 vdbg_printk(TPACPI_DBG_INIT
, "trying to locate ACPI handle for %s\n",
660 for (i
= 0; i
< num_paths
; i
++) {
661 status
= acpi_get_handle(parent
, paths
[i
], handle
);
662 if (ACPI_SUCCESS(status
)) {
664 dbg_printk(TPACPI_DBG_INIT
,
665 "Found ACPI handle %s for %s\n",
671 vdbg_printk(TPACPI_DBG_INIT
, "ACPI handle for %s not found\n",
676 static void dispatch_acpi_notify(acpi_handle handle
, u32 event
, void *data
)
678 struct ibm_struct
*ibm
= data
;
680 if (tpacpi_lifecycle
!= TPACPI_LIFE_RUNNING
)
683 if (!ibm
|| !ibm
->acpi
|| !ibm
->acpi
->notify
)
686 ibm
->acpi
->notify(ibm
, event
);
689 static int __init
setup_acpi_notify(struct ibm_struct
*ibm
)
696 if (!*ibm
->acpi
->handle
)
699 vdbg_printk(TPACPI_DBG_INIT
,
700 "setting up ACPI notify for %s\n", ibm
->name
);
702 rc
= acpi_bus_get_device(*ibm
->acpi
->handle
, &ibm
->acpi
->device
);
704 printk(TPACPI_ERR
"acpi_bus_get_device(%s) failed: %d\n",
709 ibm
->acpi
->device
->driver_data
= ibm
;
710 sprintf(acpi_device_class(ibm
->acpi
->device
), "%s/%s",
711 TPACPI_ACPI_EVENT_PREFIX
,
714 status
= acpi_install_notify_handler(*ibm
->acpi
->handle
,
715 ibm
->acpi
->type
, dispatch_acpi_notify
, ibm
);
716 if (ACPI_FAILURE(status
)) {
717 if (status
== AE_ALREADY_EXISTS
) {
719 "another device driver is already "
720 "handling %s events\n", ibm
->name
);
723 "acpi_install_notify_handler(%s) failed: %d\n",
728 ibm
->flags
.acpi_notify_installed
= 1;
732 static int __init
tpacpi_device_add(struct acpi_device
*device
)
737 static int __init
register_tpacpi_subdriver(struct ibm_struct
*ibm
)
741 dbg_printk(TPACPI_DBG_INIT
,
742 "registering %s as an ACPI driver\n", ibm
->name
);
746 ibm
->acpi
->driver
= kzalloc(sizeof(struct acpi_driver
), GFP_KERNEL
);
747 if (!ibm
->acpi
->driver
) {
749 "failed to allocate memory for ibm->acpi->driver\n");
753 sprintf(ibm
->acpi
->driver
->name
, "%s_%s", TPACPI_NAME
, ibm
->name
);
754 ibm
->acpi
->driver
->ids
= ibm
->acpi
->hid
;
756 ibm
->acpi
->driver
->ops
.add
= &tpacpi_device_add
;
758 rc
= acpi_bus_register_driver(ibm
->acpi
->driver
);
760 printk(TPACPI_ERR
"acpi_bus_register_driver(%s) failed: %d\n",
762 kfree(ibm
->acpi
->driver
);
763 ibm
->acpi
->driver
= NULL
;
765 ibm
->flags
.acpi_driver_registered
= 1;
771 /****************************************************************************
772 ****************************************************************************
776 ****************************************************************************
777 ****************************************************************************/
779 static int dispatch_procfs_read(char *page
, char **start
, off_t off
,
780 int count
, int *eof
, void *data
)
782 struct ibm_struct
*ibm
= data
;
785 if (!ibm
|| !ibm
->read
)
788 len
= ibm
->read(page
);
792 if (len
<= off
+ count
)
804 static int dispatch_procfs_write(struct file
*file
,
805 const char __user
*userbuf
,
806 unsigned long count
, void *data
)
808 struct ibm_struct
*ibm
= data
;
812 if (!ibm
|| !ibm
->write
)
814 if (count
> PAGE_SIZE
- 2)
817 kernbuf
= kmalloc(count
+ 2, GFP_KERNEL
);
821 if (copy_from_user(kernbuf
, userbuf
, count
)) {
827 strcat(kernbuf
, ",");
828 ret
= ibm
->write(kernbuf
);
837 static char *next_cmd(char **cmds
)
842 while ((end
= strchr(start
, ',')) && end
== start
)
854 /****************************************************************************
855 ****************************************************************************
857 * Device model: input, hwmon and platform
859 ****************************************************************************
860 ****************************************************************************/
862 static struct platform_device
*tpacpi_pdev
;
863 static struct platform_device
*tpacpi_sensors_pdev
;
864 static struct device
*tpacpi_hwmon
;
865 static struct input_dev
*tpacpi_inputdev
;
866 static struct mutex tpacpi_inputdev_send_mutex
;
867 static LIST_HEAD(tpacpi_all_drivers
);
869 static int tpacpi_suspend_handler(struct platform_device
*pdev
,
872 struct ibm_struct
*ibm
, *itmp
;
874 list_for_each_entry_safe(ibm
, itmp
,
878 (ibm
->suspend
)(state
);
884 static int tpacpi_resume_handler(struct platform_device
*pdev
)
886 struct ibm_struct
*ibm
, *itmp
;
888 list_for_each_entry_safe(ibm
, itmp
,
898 static void tpacpi_shutdown_handler(struct platform_device
*pdev
)
900 struct ibm_struct
*ibm
, *itmp
;
902 list_for_each_entry_safe(ibm
, itmp
,
910 static struct platform_driver tpacpi_pdriver
= {
912 .name
= TPACPI_DRVR_NAME
,
913 .owner
= THIS_MODULE
,
915 .suspend
= tpacpi_suspend_handler
,
916 .resume
= tpacpi_resume_handler
,
917 .shutdown
= tpacpi_shutdown_handler
,
920 static struct platform_driver tpacpi_hwmon_pdriver
= {
922 .name
= TPACPI_HWMON_DRVR_NAME
,
923 .owner
= THIS_MODULE
,
927 /*************************************************************************
928 * sysfs support helpers
931 struct attribute_set
{
932 unsigned int members
, max_members
;
933 struct attribute_group group
;
936 struct attribute_set_obj
{
937 struct attribute_set s
;
939 } __attribute__((packed
));
941 static struct attribute_set
*create_attr_set(unsigned int max_members
,
944 struct attribute_set_obj
*sobj
;
946 if (max_members
== 0)
949 /* Allocates space for implicit NULL at the end too */
950 sobj
= kzalloc(sizeof(struct attribute_set_obj
) +
951 max_members
* sizeof(struct attribute
*),
955 sobj
->s
.max_members
= max_members
;
956 sobj
->s
.group
.attrs
= &sobj
->a
;
957 sobj
->s
.group
.name
= name
;
962 #define destroy_attr_set(_set) \
965 /* not multi-threaded safe, use it in a single thread per set */
966 static int add_to_attr_set(struct attribute_set
*s
, struct attribute
*attr
)
971 if (s
->members
>= s
->max_members
)
974 s
->group
.attrs
[s
->members
] = attr
;
980 static int add_many_to_attr_set(struct attribute_set
*s
,
981 struct attribute
**attr
,
986 for (i
= 0; i
< count
; i
++) {
987 res
= add_to_attr_set(s
, attr
[i
]);
995 static void delete_attr_set(struct attribute_set
*s
, struct kobject
*kobj
)
997 sysfs_remove_group(kobj
, &s
->group
);
1001 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
1002 sysfs_create_group(_kobj, &_attr_set->group)
1004 static int parse_strtoul(const char *buf
,
1005 unsigned long max
, unsigned long *value
)
1009 while (*buf
&& isspace(*buf
))
1011 *value
= simple_strtoul(buf
, &endp
, 0);
1012 while (*endp
&& isspace(*endp
))
1014 if (*endp
|| *value
> max
)
1020 static void tpacpi_disable_brightness_delay(void)
1022 if (acpi_evalf(hkey_handle
, NULL
, "PWMS", "qvd", 0))
1023 printk(TPACPI_NOTICE
1024 "ACPI backlight control delay disabled\n");
1027 static int __init
tpacpi_query_bcl_levels(acpi_handle handle
)
1029 struct acpi_buffer buffer
= { ACPI_ALLOCATE_BUFFER
, NULL
};
1030 union acpi_object
*obj
;
1033 if (ACPI_SUCCESS(acpi_evaluate_object(handle
, NULL
, NULL
, &buffer
))) {
1034 obj
= (union acpi_object
*)buffer
.pointer
;
1035 if (!obj
|| (obj
->type
!= ACPI_TYPE_PACKAGE
)) {
1036 printk(TPACPI_ERR
"Unknown _BCL data, "
1037 "please report this to %s\n", TPACPI_MAIL
);
1040 rc
= obj
->package
.count
;
1046 kfree(buffer
.pointer
);
1050 static acpi_status __init
tpacpi_acpi_walk_find_bcl(acpi_handle handle
,
1051 u32 lvl
, void *context
, void **rv
)
1053 char name
[ACPI_PATH_SEGMENT_LENGTH
];
1054 struct acpi_buffer buffer
= { sizeof(name
), &name
};
1056 if (ACPI_SUCCESS(acpi_get_name(handle
, ACPI_SINGLE_NAME
, &buffer
)) &&
1057 !strncmp("_BCL", name
, sizeof(name
) - 1)) {
1058 BUG_ON(!rv
|| !*rv
);
1059 **(int **)rv
= tpacpi_query_bcl_levels(handle
);
1060 return AE_CTRL_TERMINATE
;
1067 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
1069 static int __init
tpacpi_check_std_acpi_brightness_support(void)
1073 void *bcl_ptr
= &bcl_levels
;
1076 TPACPI_ACPIHANDLE_INIT(vid
);
1082 * Search for a _BCL method, and execute it. This is safe on all
1083 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
1084 * BIOS in ACPI backlight control mode. We do NOT have to care
1085 * about calling the _BCL method in an enabled video device, any
1086 * will do for our purposes.
1089 status
= acpi_walk_namespace(ACPI_TYPE_METHOD
, vid_handle
, 3,
1090 tpacpi_acpi_walk_find_bcl
, NULL
,
1093 if (ACPI_SUCCESS(status
) && bcl_levels
> 2) {
1094 tp_features
.bright_acpimode
= 1;
1095 return (bcl_levels
- 2);
1101 static void printk_deprecated_attribute(const char * const what
,
1102 const char * const details
)
1104 tpacpi_log_usertask("deprecated sysfs attribute");
1105 printk(TPACPI_WARN
"WARNING: sysfs attribute %s is deprecated and "
1106 "will be removed. %s\n",
1110 /*************************************************************************
1111 * rfkill and radio control support helpers
1115 * ThinkPad-ACPI firmware handling model:
1117 * WLSW (master wireless switch) is event-driven, and is common to all
1118 * firmware-controlled radios. It cannot be controlled, just monitored,
1119 * as expected. It overrides all radio state in firmware
1121 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1122 * (TODO: verify how WLSW interacts with the returned radio state).
1124 * The only time there are shadow radio state changes, is when
1125 * masked-off hotkeys are used.
1129 * Internal driver API for radio state:
1131 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1132 * bool: true means radio blocked (off)
1134 enum tpacpi_rfkill_state
{
1135 TPACPI_RFK_RADIO_OFF
= 0,
1139 /* rfkill switches */
1140 enum tpacpi_rfk_id
{
1141 TPACPI_RFK_BLUETOOTH_SW_ID
= 0,
1142 TPACPI_RFK_WWAN_SW_ID
,
1143 TPACPI_RFK_UWB_SW_ID
,
1147 static const char *tpacpi_rfkill_names
[] = {
1148 [TPACPI_RFK_BLUETOOTH_SW_ID
] = "bluetooth",
1149 [TPACPI_RFK_WWAN_SW_ID
] = "wwan",
1150 [TPACPI_RFK_UWB_SW_ID
] = "uwb",
1151 [TPACPI_RFK_SW_MAX
] = NULL
1154 /* ThinkPad-ACPI rfkill subdriver */
1156 struct rfkill
*rfkill
;
1157 enum tpacpi_rfk_id id
;
1158 const struct tpacpi_rfk_ops
*ops
;
1161 struct tpacpi_rfk_ops
{
1162 /* firmware interface */
1163 int (*get_status
)(void);
1164 int (*set_status
)(const enum tpacpi_rfkill_state
);
1167 static struct tpacpi_rfk
*tpacpi_rfkill_switches
[TPACPI_RFK_SW_MAX
];
1169 /* Query FW and update rfkill sw state for a given rfkill switch */
1170 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk
*tp_rfk
)
1177 status
= (tp_rfk
->ops
->get_status
)();
1181 rfkill_set_sw_state(tp_rfk
->rfkill
,
1182 (status
== TPACPI_RFK_RADIO_OFF
));
1187 /* Query FW and update rfkill sw state for all rfkill switches */
1188 static void tpacpi_rfk_update_swstate_all(void)
1192 for (i
= 0; i
< TPACPI_RFK_SW_MAX
; i
++)
1193 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[i
]);
1197 * Sync the HW-blocking state of all rfkill switches,
1198 * do notice it causes the rfkill core to schedule uevents
1200 static void tpacpi_rfk_update_hwblock_state(bool blocked
)
1203 struct tpacpi_rfk
*tp_rfk
;
1205 for (i
= 0; i
< TPACPI_RFK_SW_MAX
; i
++) {
1206 tp_rfk
= tpacpi_rfkill_switches
[i
];
1208 if (rfkill_set_hw_state(tp_rfk
->rfkill
,
1210 /* ignore -- we track sw block */
1216 /* Call to get the WLSW state from the firmware */
1217 static int hotkey_get_wlsw(void);
1219 /* Call to query WLSW state and update all rfkill switches */
1220 static bool tpacpi_rfk_check_hwblock_state(void)
1222 int res
= hotkey_get_wlsw();
1225 /* When unknown or unsupported, we have to assume it is unblocked */
1229 hw_blocked
= (res
== TPACPI_RFK_RADIO_OFF
);
1230 tpacpi_rfk_update_hwblock_state(hw_blocked
);
1235 static int tpacpi_rfk_hook_set_block(void *data
, bool blocked
)
1237 struct tpacpi_rfk
*tp_rfk
= data
;
1240 dbg_printk(TPACPI_DBG_RFKILL
,
1241 "request to change radio state to %s\n",
1242 blocked
? "blocked" : "unblocked");
1244 /* try to set radio state */
1245 res
= (tp_rfk
->ops
->set_status
)(blocked
?
1246 TPACPI_RFK_RADIO_OFF
: TPACPI_RFK_RADIO_ON
);
1248 /* and update the rfkill core with whatever the FW really did */
1249 tpacpi_rfk_update_swstate(tp_rfk
);
1251 return (res
< 0) ? res
: 0;
1254 static const struct rfkill_ops tpacpi_rfk_rfkill_ops
= {
1255 .set_block
= tpacpi_rfk_hook_set_block
,
1258 static int __init
tpacpi_new_rfkill(const enum tpacpi_rfk_id id
,
1259 const struct tpacpi_rfk_ops
*tp_rfkops
,
1260 const enum rfkill_type rfktype
,
1262 const bool set_default
)
1264 struct tpacpi_rfk
*atp_rfk
;
1266 bool sw_state
= false;
1269 BUG_ON(id
>= TPACPI_RFK_SW_MAX
|| tpacpi_rfkill_switches
[id
]);
1271 atp_rfk
= kzalloc(sizeof(struct tpacpi_rfk
), GFP_KERNEL
);
1273 atp_rfk
->rfkill
= rfkill_alloc(name
,
1276 &tpacpi_rfk_rfkill_ops
,
1278 if (!atp_rfk
|| !atp_rfk
->rfkill
) {
1280 "failed to allocate memory for rfkill class\n");
1286 atp_rfk
->ops
= tp_rfkops
;
1288 sw_status
= (tp_rfkops
->get_status
)();
1289 if (sw_status
< 0) {
1291 "failed to read initial state for %s, error %d\n",
1294 sw_state
= (sw_status
== TPACPI_RFK_RADIO_OFF
);
1296 /* try to keep the initial state, since we ask the
1297 * firmware to preserve it across S5 in NVRAM */
1298 rfkill_init_sw_state(atp_rfk
->rfkill
, sw_state
);
1301 rfkill_set_hw_state(atp_rfk
->rfkill
, tpacpi_rfk_check_hwblock_state());
1303 res
= rfkill_register(atp_rfk
->rfkill
);
1306 "failed to register %s rfkill switch: %d\n",
1308 rfkill_destroy(atp_rfk
->rfkill
);
1313 tpacpi_rfkill_switches
[id
] = atp_rfk
;
1317 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id
)
1319 struct tpacpi_rfk
*tp_rfk
;
1321 BUG_ON(id
>= TPACPI_RFK_SW_MAX
);
1323 tp_rfk
= tpacpi_rfkill_switches
[id
];
1325 rfkill_unregister(tp_rfk
->rfkill
);
1326 rfkill_destroy(tp_rfk
->rfkill
);
1327 tpacpi_rfkill_switches
[id
] = NULL
;
1332 static void printk_deprecated_rfkill_attribute(const char * const what
)
1334 printk_deprecated_attribute(what
,
1335 "Please switch to generic rfkill before year 2010");
1338 /* sysfs <radio> enable ------------------------------------------------ */
1339 static ssize_t
tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id
,
1340 struct device_attribute
*attr
,
1345 printk_deprecated_rfkill_attribute(attr
->attr
.name
);
1347 /* This is in the ABI... */
1348 if (tpacpi_rfk_check_hwblock_state()) {
1349 status
= TPACPI_RFK_RADIO_OFF
;
1351 status
= tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[id
]);
1356 return snprintf(buf
, PAGE_SIZE
, "%d\n",
1357 (status
== TPACPI_RFK_RADIO_ON
) ? 1 : 0);
1360 static ssize_t
tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id
,
1361 struct device_attribute
*attr
,
1362 const char *buf
, size_t count
)
1367 printk_deprecated_rfkill_attribute(attr
->attr
.name
);
1369 if (parse_strtoul(buf
, 1, &t
))
1372 tpacpi_disclose_usertask(attr
->attr
.name
, "set to %ld\n", t
);
1374 /* This is in the ABI... */
1375 if (tpacpi_rfk_check_hwblock_state() && !!t
)
1378 res
= tpacpi_rfkill_switches
[id
]->ops
->set_status((!!t
) ?
1379 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
);
1380 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[id
]);
1382 return (res
< 0) ? res
: count
;
1385 /* procfs -------------------------------------------------------------- */
1386 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id
, char *p
)
1390 if (id
>= TPACPI_RFK_SW_MAX
)
1391 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
1395 /* This is in the ABI... */
1396 if (tpacpi_rfk_check_hwblock_state()) {
1397 status
= TPACPI_RFK_RADIO_OFF
;
1399 status
= tpacpi_rfk_update_swstate(
1400 tpacpi_rfkill_switches
[id
]);
1405 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
1406 (status
== TPACPI_RFK_RADIO_ON
) ?
1407 "enabled" : "disabled");
1408 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n");
1414 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id
, char *buf
)
1420 if (id
>= TPACPI_RFK_SW_MAX
)
1423 while ((cmd
= next_cmd(&buf
))) {
1424 if (strlencmp(cmd
, "enable") == 0)
1425 status
= TPACPI_RFK_RADIO_ON
;
1426 else if (strlencmp(cmd
, "disable") == 0)
1427 status
= TPACPI_RFK_RADIO_OFF
;
1433 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1434 (status
== TPACPI_RFK_RADIO_ON
) ?
1435 "enable" : "disable",
1436 tpacpi_rfkill_names
[id
]);
1437 res
= (tpacpi_rfkill_switches
[id
]->ops
->set_status
)(status
);
1438 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches
[id
]);
1444 /*************************************************************************
1445 * thinkpad-acpi driver attributes
1448 /* interface_version --------------------------------------------------- */
1449 static ssize_t
tpacpi_driver_interface_version_show(
1450 struct device_driver
*drv
,
1453 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", TPACPI_SYSFS_VERSION
);
1456 static DRIVER_ATTR(interface_version
, S_IRUGO
,
1457 tpacpi_driver_interface_version_show
, NULL
);
1459 /* debug_level --------------------------------------------------------- */
1460 static ssize_t
tpacpi_driver_debug_show(struct device_driver
*drv
,
1463 return snprintf(buf
, PAGE_SIZE
, "0x%04x\n", dbg_level
);
1466 static ssize_t
tpacpi_driver_debug_store(struct device_driver
*drv
,
1467 const char *buf
, size_t count
)
1471 if (parse_strtoul(buf
, 0xffff, &t
))
1479 static DRIVER_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
1480 tpacpi_driver_debug_show
, tpacpi_driver_debug_store
);
1482 /* version ------------------------------------------------------------- */
1483 static ssize_t
tpacpi_driver_version_show(struct device_driver
*drv
,
1486 return snprintf(buf
, PAGE_SIZE
, "%s v%s\n",
1487 TPACPI_DESC
, TPACPI_VERSION
);
1490 static DRIVER_ATTR(version
, S_IRUGO
,
1491 tpacpi_driver_version_show
, NULL
);
1493 /* --------------------------------------------------------------------- */
1495 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1497 /* wlsw_emulstate ------------------------------------------------------ */
1498 static ssize_t
tpacpi_driver_wlsw_emulstate_show(struct device_driver
*drv
,
1501 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_wlsw_emulstate
);
1504 static ssize_t
tpacpi_driver_wlsw_emulstate_store(struct device_driver
*drv
,
1505 const char *buf
, size_t count
)
1509 if (parse_strtoul(buf
, 1, &t
))
1512 if (tpacpi_wlsw_emulstate
!= !!t
) {
1513 tpacpi_wlsw_emulstate
= !!t
;
1514 tpacpi_rfk_update_hwblock_state(!t
); /* negative logic */
1520 static DRIVER_ATTR(wlsw_emulstate
, S_IWUSR
| S_IRUGO
,
1521 tpacpi_driver_wlsw_emulstate_show
,
1522 tpacpi_driver_wlsw_emulstate_store
);
1524 /* bluetooth_emulstate ------------------------------------------------- */
1525 static ssize_t
tpacpi_driver_bluetooth_emulstate_show(
1526 struct device_driver
*drv
,
1529 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_bluetooth_emulstate
);
1532 static ssize_t
tpacpi_driver_bluetooth_emulstate_store(
1533 struct device_driver
*drv
,
1534 const char *buf
, size_t count
)
1538 if (parse_strtoul(buf
, 1, &t
))
1541 tpacpi_bluetooth_emulstate
= !!t
;
1546 static DRIVER_ATTR(bluetooth_emulstate
, S_IWUSR
| S_IRUGO
,
1547 tpacpi_driver_bluetooth_emulstate_show
,
1548 tpacpi_driver_bluetooth_emulstate_store
);
1550 /* wwan_emulstate ------------------------------------------------- */
1551 static ssize_t
tpacpi_driver_wwan_emulstate_show(
1552 struct device_driver
*drv
,
1555 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_wwan_emulstate
);
1558 static ssize_t
tpacpi_driver_wwan_emulstate_store(
1559 struct device_driver
*drv
,
1560 const char *buf
, size_t count
)
1564 if (parse_strtoul(buf
, 1, &t
))
1567 tpacpi_wwan_emulstate
= !!t
;
1572 static DRIVER_ATTR(wwan_emulstate
, S_IWUSR
| S_IRUGO
,
1573 tpacpi_driver_wwan_emulstate_show
,
1574 tpacpi_driver_wwan_emulstate_store
);
1576 /* uwb_emulstate ------------------------------------------------- */
1577 static ssize_t
tpacpi_driver_uwb_emulstate_show(
1578 struct device_driver
*drv
,
1581 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_uwb_emulstate
);
1584 static ssize_t
tpacpi_driver_uwb_emulstate_store(
1585 struct device_driver
*drv
,
1586 const char *buf
, size_t count
)
1590 if (parse_strtoul(buf
, 1, &t
))
1593 tpacpi_uwb_emulstate
= !!t
;
1598 static DRIVER_ATTR(uwb_emulstate
, S_IWUSR
| S_IRUGO
,
1599 tpacpi_driver_uwb_emulstate_show
,
1600 tpacpi_driver_uwb_emulstate_store
);
1603 /* --------------------------------------------------------------------- */
1605 static struct driver_attribute
*tpacpi_driver_attributes
[] = {
1606 &driver_attr_debug_level
, &driver_attr_version
,
1607 &driver_attr_interface_version
,
1610 static int __init
tpacpi_create_driver_attributes(struct device_driver
*drv
)
1616 while (!res
&& i
< ARRAY_SIZE(tpacpi_driver_attributes
)) {
1617 res
= driver_create_file(drv
, tpacpi_driver_attributes
[i
]);
1621 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1622 if (!res
&& dbg_wlswemul
)
1623 res
= driver_create_file(drv
, &driver_attr_wlsw_emulstate
);
1624 if (!res
&& dbg_bluetoothemul
)
1625 res
= driver_create_file(drv
, &driver_attr_bluetooth_emulstate
);
1626 if (!res
&& dbg_wwanemul
)
1627 res
= driver_create_file(drv
, &driver_attr_wwan_emulstate
);
1628 if (!res
&& dbg_uwbemul
)
1629 res
= driver_create_file(drv
, &driver_attr_uwb_emulstate
);
1635 static void tpacpi_remove_driver_attributes(struct device_driver
*drv
)
1639 for (i
= 0; i
< ARRAY_SIZE(tpacpi_driver_attributes
); i
++)
1640 driver_remove_file(drv
, tpacpi_driver_attributes
[i
]);
1642 #ifdef THINKPAD_ACPI_DEBUGFACILITIES
1643 driver_remove_file(drv
, &driver_attr_wlsw_emulstate
);
1644 driver_remove_file(drv
, &driver_attr_bluetooth_emulstate
);
1645 driver_remove_file(drv
, &driver_attr_wwan_emulstate
);
1646 driver_remove_file(drv
, &driver_attr_uwb_emulstate
);
1650 /*************************************************************************
1655 * Table of recommended minimum BIOS versions
1657 * Reasons for listing:
1658 * 1. Stable BIOS, listed because the unknown ammount of
1659 * bugs and bad ACPI behaviour on older versions
1661 * 2. BIOS or EC fw with known bugs that trigger on Linux
1663 * 3. BIOS with known reduced functionality in older versions
1665 * We recommend the latest BIOS and EC version.
1666 * We only support the latest BIOS and EC fw version as a rule.
1668 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1669 * Information from users in ThinkWiki
1671 * WARNING: we use this table also to detect that the machine is
1672 * a ThinkPad in some cases, so don't remove entries lightly.
1675 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1676 { .vendor = (__v), \
1677 .bios = TPID(__id1, __id2), \
1678 .ec = TPACPI_MATCH_ANY, \
1679 .quirks = TPACPI_MATCH_ANY << 16 \
1680 | (__bv1) << 8 | (__bv2) }
1682 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
1683 __eid, __ev1, __ev2) \
1684 { .vendor = (__v), \
1685 .bios = TPID(__bid1, __bid2), \
1687 .quirks = (__ev1) << 24 | (__ev2) << 16 \
1688 | (__bv1) << 8 | (__bv2) }
1690 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1691 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1693 /* Outdated IBM BIOSes often lack the EC id string */
1694 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1695 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1696 __bv1, __bv2, TPID(__id1, __id2), \
1698 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1699 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1702 /* Outdated IBM BIOSes often lack the EC id string */
1703 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1704 __eid1, __eid2, __ev1, __ev2) \
1705 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1706 __bv1, __bv2, TPID(__eid1, __eid2), \
1708 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1709 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1712 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1713 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1715 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1716 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
1717 __bv1, __bv2, TPID(__id1, __id2), \
1720 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1721 __eid1, __eid2, __ev1, __ev2) \
1722 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
1723 __bv1, __bv2, TPID(__eid1, __eid2), \
1726 static const struct tpacpi_quirk tpacpi_bios_version_qtable
[] __initconst
= {
1727 /* Numeric models ------------------ */
1728 /* FW MODEL BIOS VERS */
1729 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1730 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1731 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1732 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1733 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1734 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1735 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1736 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1737 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1739 /* A-series ------------------------- */
1740 /* FW MODEL BIOS VERS EC VERS */
1741 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1742 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1743 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1744 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1745 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1746 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1747 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1748 TPV_QI0('1', '3', '2', '0'), /* A22m */
1749 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1750 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1751 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1753 /* G-series ------------------------- */
1754 /* FW MODEL BIOS VERS */
1755 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1756 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1758 /* R-series, T-series --------------- */
1759 /* FW MODEL BIOS VERS EC VERS */
1760 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1761 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1762 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1763 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1764 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1765 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1766 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1767 T40/p, T41/p, T42/p (1) */
1768 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1769 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1770 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1771 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1773 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1774 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1775 TPV_QI0('1', '6', '3', '2'), /* T22 */
1776 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1777 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1778 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1780 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1781 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
1782 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
1784 /* BIOS FW BIOS VERS EC FW EC VERS */
1785 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1786 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1788 /* X-series ------------------------- */
1789 /* FW MODEL BIOS VERS EC VERS */
1790 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1791 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1792 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1793 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1794 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1795 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1796 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1798 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1799 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
1801 /* (0) - older versions lack DMI EC fw string and functionality */
1802 /* (1) - older versions known to lack functionality */
1813 static void __init
tpacpi_check_outdated_fw(void)
1815 unsigned long fwvers
;
1816 u16 ec_version
, bios_version
;
1818 fwvers
= tpacpi_check_quirks(tpacpi_bios_version_qtable
,
1819 ARRAY_SIZE(tpacpi_bios_version_qtable
));
1824 bios_version
= fwvers
& 0xffffU
;
1825 ec_version
= (fwvers
>> 16) & 0xffffU
;
1827 /* note that unknown versions are set to 0x0000 and we use that */
1828 if ((bios_version
> thinkpad_id
.bios_release
) ||
1829 (ec_version
> thinkpad_id
.ec_release
&&
1830 ec_version
!= TPACPI_MATCH_ANY
)) {
1832 * The changelogs would let us track down the exact
1833 * reason, but it is just too much of a pain to track
1834 * it. We only list BIOSes that are either really
1835 * broken, or really stable to begin with, so it is
1836 * best if the user upgrades the firmware anyway.
1839 "WARNING: Outdated ThinkPad BIOS/EC firmware\n");
1841 "WARNING: This firmware may be missing critical bug "
1842 "fixes and/or important features\n");
1846 static bool __init
tpacpi_is_fw_known(void)
1848 return tpacpi_check_quirks(tpacpi_bios_version_qtable
,
1849 ARRAY_SIZE(tpacpi_bios_version_qtable
)) != 0;
1852 /****************************************************************************
1853 ****************************************************************************
1857 ****************************************************************************
1858 ****************************************************************************/
1860 /*************************************************************************
1861 * thinkpad-acpi init subdriver
1864 static int __init
thinkpad_acpi_driver_init(struct ibm_init_struct
*iibm
)
1866 printk(TPACPI_INFO
"%s v%s\n", TPACPI_DESC
, TPACPI_VERSION
);
1867 printk(TPACPI_INFO
"%s\n", TPACPI_URL
);
1869 printk(TPACPI_INFO
"ThinkPad BIOS %s, EC %s\n",
1870 (thinkpad_id
.bios_version_str
) ?
1871 thinkpad_id
.bios_version_str
: "unknown",
1872 (thinkpad_id
.ec_version_str
) ?
1873 thinkpad_id
.ec_version_str
: "unknown");
1875 if (thinkpad_id
.vendor
&& thinkpad_id
.model_str
)
1876 printk(TPACPI_INFO
"%s %s, model %s\n",
1877 (thinkpad_id
.vendor
== PCI_VENDOR_ID_IBM
) ?
1878 "IBM" : ((thinkpad_id
.vendor
==
1879 PCI_VENDOR_ID_LENOVO
) ?
1880 "Lenovo" : "Unknown vendor"),
1881 thinkpad_id
.model_str
,
1882 (thinkpad_id
.nummodel_str
) ?
1883 thinkpad_id
.nummodel_str
: "unknown");
1885 tpacpi_check_outdated_fw();
1889 static int thinkpad_acpi_driver_read(char *p
)
1893 len
+= sprintf(p
+ len
, "driver:\t\t%s\n", TPACPI_DESC
);
1894 len
+= sprintf(p
+ len
, "version:\t%s\n", TPACPI_VERSION
);
1899 static struct ibm_struct thinkpad_acpi_driver_data
= {
1901 .read
= thinkpad_acpi_driver_read
,
1904 /*************************************************************************
1909 * ThinkPad firmware event model
1911 * The ThinkPad firmware has two main event interfaces: normal ACPI
1912 * notifications (which follow the ACPI standard), and a private event
1915 * The private event interface also issues events for the hotkeys. As
1916 * the driver gained features, the event handling code ended up being
1917 * built around the hotkey subdriver. This will need to be refactored
1918 * to a more formal event API eventually.
1920 * Some "hotkeys" are actually supposed to be used as event reports,
1921 * such as "brightness has changed", "volume has changed", depending on
1922 * the ThinkPad model and how the firmware is operating.
1924 * Unlike other classes, hotkey-class events have mask/unmask control on
1925 * non-ancient firmware. However, how it behaves changes a lot with the
1926 * firmware model and version.
1929 enum { /* hot key scan codes (derived from ACPI DSDT) */
1930 TP_ACPI_HOTKEYSCAN_FNF1
= 0,
1931 TP_ACPI_HOTKEYSCAN_FNF2
,
1932 TP_ACPI_HOTKEYSCAN_FNF3
,
1933 TP_ACPI_HOTKEYSCAN_FNF4
,
1934 TP_ACPI_HOTKEYSCAN_FNF5
,
1935 TP_ACPI_HOTKEYSCAN_FNF6
,
1936 TP_ACPI_HOTKEYSCAN_FNF7
,
1937 TP_ACPI_HOTKEYSCAN_FNF8
,
1938 TP_ACPI_HOTKEYSCAN_FNF9
,
1939 TP_ACPI_HOTKEYSCAN_FNF10
,
1940 TP_ACPI_HOTKEYSCAN_FNF11
,
1941 TP_ACPI_HOTKEYSCAN_FNF12
,
1942 TP_ACPI_HOTKEYSCAN_FNBACKSPACE
,
1943 TP_ACPI_HOTKEYSCAN_FNINSERT
,
1944 TP_ACPI_HOTKEYSCAN_FNDELETE
,
1945 TP_ACPI_HOTKEYSCAN_FNHOME
,
1946 TP_ACPI_HOTKEYSCAN_FNEND
,
1947 TP_ACPI_HOTKEYSCAN_FNPAGEUP
,
1948 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN
,
1949 TP_ACPI_HOTKEYSCAN_FNSPACE
,
1950 TP_ACPI_HOTKEYSCAN_VOLUMEUP
,
1951 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
,
1952 TP_ACPI_HOTKEYSCAN_MUTE
,
1953 TP_ACPI_HOTKEYSCAN_THINKPAD
,
1956 enum { /* Keys/events available through NVRAM polling */
1957 TPACPI_HKEY_NVRAM_KNOWN_MASK
= 0x00fb88c0U
,
1958 TPACPI_HKEY_NVRAM_GOOD_MASK
= 0x00fb8000U
,
1961 enum { /* Positions of some of the keys in hotkey masks */
1962 TP_ACPI_HKEY_DISPSWTCH_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF7
,
1963 TP_ACPI_HKEY_DISPXPAND_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF8
,
1964 TP_ACPI_HKEY_HIBERNATE_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF12
,
1965 TP_ACPI_HKEY_BRGHTUP_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNHOME
,
1966 TP_ACPI_HKEY_BRGHTDWN_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNEND
,
1967 TP_ACPI_HKEY_THNKLGHT_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP
,
1968 TP_ACPI_HKEY_ZOOM_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNSPACE
,
1969 TP_ACPI_HKEY_VOLUP_MASK
= 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP
,
1970 TP_ACPI_HKEY_VOLDWN_MASK
= 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
,
1971 TP_ACPI_HKEY_MUTE_MASK
= 1 << TP_ACPI_HOTKEYSCAN_MUTE
,
1972 TP_ACPI_HKEY_THINKPAD_MASK
= 1 << TP_ACPI_HOTKEYSCAN_THINKPAD
,
1975 enum { /* NVRAM to ACPI HKEY group map */
1976 TP_NVRAM_HKEY_GROUP_HK2
= TP_ACPI_HKEY_THINKPAD_MASK
|
1977 TP_ACPI_HKEY_ZOOM_MASK
|
1978 TP_ACPI_HKEY_DISPSWTCH_MASK
|
1979 TP_ACPI_HKEY_HIBERNATE_MASK
,
1980 TP_NVRAM_HKEY_GROUP_BRIGHTNESS
= TP_ACPI_HKEY_BRGHTUP_MASK
|
1981 TP_ACPI_HKEY_BRGHTDWN_MASK
,
1982 TP_NVRAM_HKEY_GROUP_VOLUME
= TP_ACPI_HKEY_VOLUP_MASK
|
1983 TP_ACPI_HKEY_VOLDWN_MASK
|
1984 TP_ACPI_HKEY_MUTE_MASK
,
1987 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1988 struct tp_nvram_state
{
1989 u16 thinkpad_toggle
:1;
1991 u16 display_toggle
:1;
1992 u16 thinklight_toggle
:1;
1993 u16 hibernate_toggle
:1;
1994 u16 displayexp_toggle
:1;
1995 u16 display_state
:1;
1996 u16 brightness_toggle
:1;
1997 u16 volume_toggle
:1;
2000 u8 brightness_level
;
2004 /* kthread for the hotkey poller */
2005 static struct task_struct
*tpacpi_hotkey_task
;
2007 /* Acquired while the poller kthread is running, use to sync start/stop */
2008 static struct mutex hotkey_thread_mutex
;
2011 * Acquire mutex to write poller control variables as an
2014 * Increment hotkey_config_change when changing them if you
2015 * want the kthread to forget old state.
2017 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
2019 static struct mutex hotkey_thread_data_mutex
;
2020 static unsigned int hotkey_config_change
;
2023 * hotkey poller control variables
2025 * Must be atomic or readers will also need to acquire mutex
2027 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
2028 * should be used only when the changes need to be taken as
2029 * a block, OR when one needs to force the kthread to forget
2032 static u32 hotkey_source_mask
; /* bit mask 0=ACPI,1=NVRAM */
2033 static unsigned int hotkey_poll_freq
= 10; /* Hz */
2035 #define HOTKEY_CONFIG_CRITICAL_START \
2037 mutex_lock(&hotkey_thread_data_mutex); \
2038 hotkey_config_change++; \
2040 #define HOTKEY_CONFIG_CRITICAL_END \
2041 mutex_unlock(&hotkey_thread_data_mutex);
2043 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2045 #define hotkey_source_mask 0U
2046 #define HOTKEY_CONFIG_CRITICAL_START
2047 #define HOTKEY_CONFIG_CRITICAL_END
2049 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2051 static struct mutex hotkey_mutex
;
2053 static enum { /* Reasons for waking up */
2054 TP_ACPI_WAKEUP_NONE
= 0, /* None or unknown */
2055 TP_ACPI_WAKEUP_BAYEJ
, /* Bay ejection request */
2056 TP_ACPI_WAKEUP_UNDOCK
, /* Undock request */
2057 } hotkey_wakeup_reason
;
2059 static int hotkey_autosleep_ack
;
2061 static u32 hotkey_orig_mask
; /* events the BIOS had enabled */
2062 static u32 hotkey_all_mask
; /* all events supported in fw */
2063 static u32 hotkey_reserved_mask
; /* events better left disabled */
2064 static u32 hotkey_driver_mask
; /* events needed by the driver */
2065 static u32 hotkey_user_mask
; /* events visible to userspace */
2066 static u32 hotkey_acpi_mask
; /* events enabled in firmware */
2068 static unsigned int hotkey_report_mode
;
2070 static u16
*hotkey_keycode_map
;
2072 static struct attribute_set
*hotkey_dev_attributes
;
2074 static void tpacpi_driver_event(const unsigned int hkey_event
);
2075 static void hotkey_driver_event(const unsigned int scancode
);
2077 /* HKEY.MHKG() return bits */
2078 #define TP_HOTKEY_TABLET_MASK (1 << 3)
2080 static int hotkey_get_wlsw(void)
2084 if (!tp_features
.hotkey_wlsw
)
2087 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
2089 return (tpacpi_wlsw_emulstate
) ?
2090 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
2093 if (!acpi_evalf(hkey_handle
, &status
, "WLSW", "d"))
2096 return (status
) ? TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
2099 static int hotkey_get_tablet_mode(int *status
)
2103 if (!acpi_evalf(hkey_handle
, &s
, "MHKG", "d"))
2106 *status
= ((s
& TP_HOTKEY_TABLET_MASK
) != 0);
2111 * Reads current event mask from firmware, and updates
2112 * hotkey_acpi_mask accordingly. Also resets any bits
2113 * from hotkey_user_mask that are unavailable to be
2114 * delivered (shadow requirement of the userspace ABI).
2116 * Call with hotkey_mutex held
2118 static int hotkey_mask_get(void)
2120 if (tp_features
.hotkey_mask
) {
2123 if (!acpi_evalf(hkey_handle
, &m
, "DHKN", "d"))
2126 hotkey_acpi_mask
= m
;
2128 /* no mask support doesn't mean no event support... */
2129 hotkey_acpi_mask
= hotkey_all_mask
;
2132 /* sync userspace-visible mask */
2133 hotkey_user_mask
&= (hotkey_acpi_mask
| hotkey_source_mask
);
2138 void static hotkey_mask_warn_incomplete_mask(void)
2140 /* log only what the user can fix... */
2141 const u32 wantedmask
= hotkey_driver_mask
&
2142 ~(hotkey_acpi_mask
| hotkey_source_mask
) &
2143 (hotkey_all_mask
| TPACPI_HKEY_NVRAM_KNOWN_MASK
);
2146 printk(TPACPI_NOTICE
2147 "required events 0x%08x not enabled!\n",
2152 * Set the firmware mask when supported
2154 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
2156 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
2158 * Call with hotkey_mutex held
2160 static int hotkey_mask_set(u32 mask
)
2165 const u32 fwmask
= mask
& ~hotkey_source_mask
;
2167 if (tp_features
.hotkey_mask
) {
2168 for (i
= 0; i
< 32; i
++) {
2169 if (!acpi_evalf(hkey_handle
,
2170 NULL
, "MHKM", "vdd", i
+ 1,
2171 !!(mask
& (1 << i
)))) {
2179 * We *must* make an inconditional call to hotkey_mask_get to
2180 * refresh hotkey_acpi_mask and update hotkey_user_mask
2182 * Take the opportunity to also log when we cannot _enable_
2185 if (!hotkey_mask_get() && !rc
&& (fwmask
& ~hotkey_acpi_mask
)) {
2186 printk(TPACPI_NOTICE
2187 "asked for hotkey mask 0x%08x, but "
2188 "firmware forced it to 0x%08x\n",
2189 fwmask
, hotkey_acpi_mask
);
2192 hotkey_mask_warn_incomplete_mask();
2198 * Sets hotkey_user_mask and tries to set the firmware mask
2200 * Call with hotkey_mutex held
2202 static int hotkey_user_mask_set(const u32 mask
)
2206 /* Give people a chance to notice they are doing something that
2207 * is bound to go boom on their users sooner or later */
2208 if (!tp_warned
.hotkey_mask_ff
&&
2209 (mask
== 0xffff || mask
== 0xffffff ||
2210 mask
== 0xffffffff)) {
2211 tp_warned
.hotkey_mask_ff
= 1;
2212 printk(TPACPI_NOTICE
2213 "setting the hotkey mask to 0x%08x is likely "
2214 "not the best way to go about it\n", mask
);
2215 printk(TPACPI_NOTICE
2216 "please consider using the driver defaults, "
2217 "and refer to up-to-date thinkpad-acpi "
2221 /* Try to enable what the user asked for, plus whatever we need.
2222 * this syncs everything but won't enable bits in hotkey_user_mask */
2223 rc
= hotkey_mask_set((mask
| hotkey_driver_mask
) & ~hotkey_source_mask
);
2225 /* Enable the available bits in hotkey_user_mask */
2226 hotkey_user_mask
= mask
& (hotkey_acpi_mask
| hotkey_source_mask
);
2232 * Sets the driver hotkey mask.
2234 * Can be called even if the hotkey subdriver is inactive
2236 static int tpacpi_hotkey_driver_mask_set(const u32 mask
)
2240 /* Do the right thing if hotkey_init has not been called yet */
2241 if (!tp_features
.hotkey
) {
2242 hotkey_driver_mask
= mask
;
2246 mutex_lock(&hotkey_mutex
);
2248 HOTKEY_CONFIG_CRITICAL_START
2249 hotkey_driver_mask
= mask
;
2250 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2251 hotkey_source_mask
|= (mask
& ~hotkey_all_mask
);
2253 HOTKEY_CONFIG_CRITICAL_END
2255 rc
= hotkey_mask_set((hotkey_acpi_mask
| hotkey_driver_mask
) &
2256 ~hotkey_source_mask
);
2257 mutex_unlock(&hotkey_mutex
);
2262 static int hotkey_status_get(int *status
)
2264 if (!acpi_evalf(hkey_handle
, status
, "DHKC", "d"))
2270 static int hotkey_status_set(bool enable
)
2272 if (!acpi_evalf(hkey_handle
, NULL
, "MHKC", "vd", enable
? 1 : 0))
2278 static void tpacpi_input_send_tabletsw(void)
2282 if (tp_features
.hotkey_tablet
&&
2283 !hotkey_get_tablet_mode(&state
)) {
2284 mutex_lock(&tpacpi_inputdev_send_mutex
);
2286 input_report_switch(tpacpi_inputdev
,
2287 SW_TABLET_MODE
, !!state
);
2288 input_sync(tpacpi_inputdev
);
2290 mutex_unlock(&tpacpi_inputdev_send_mutex
);
2294 /* Do NOT call without validating scancode first */
2295 static void tpacpi_input_send_key(const unsigned int scancode
)
2297 const unsigned int keycode
= hotkey_keycode_map
[scancode
];
2299 if (keycode
!= KEY_RESERVED
) {
2300 mutex_lock(&tpacpi_inputdev_send_mutex
);
2302 input_report_key(tpacpi_inputdev
, keycode
, 1);
2303 if (keycode
== KEY_UNKNOWN
)
2304 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
,
2306 input_sync(tpacpi_inputdev
);
2308 input_report_key(tpacpi_inputdev
, keycode
, 0);
2309 if (keycode
== KEY_UNKNOWN
)
2310 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
,
2312 input_sync(tpacpi_inputdev
);
2314 mutex_unlock(&tpacpi_inputdev_send_mutex
);
2318 /* Do NOT call without validating scancode first */
2319 static void tpacpi_input_send_key_masked(const unsigned int scancode
)
2321 hotkey_driver_event(scancode
);
2322 if (hotkey_user_mask
& (1 << scancode
))
2323 tpacpi_input_send_key(scancode
);
2326 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2327 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
;
2329 /* Do NOT call without validating scancode first */
2330 static void tpacpi_hotkey_send_key(unsigned int scancode
)
2332 tpacpi_input_send_key_masked(scancode
);
2333 if (hotkey_report_mode
< 2) {
2334 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver
.device
,
2335 0x80, TP_HKEY_EV_HOTKEY_BASE
+ scancode
);
2339 static void hotkey_read_nvram(struct tp_nvram_state
*n
, const u32 m
)
2343 if (m
& TP_NVRAM_HKEY_GROUP_HK2
) {
2344 d
= nvram_read_byte(TP_NVRAM_ADDR_HK2
);
2345 n
->thinkpad_toggle
= !!(d
& TP_NVRAM_MASK_HKT_THINKPAD
);
2346 n
->zoom_toggle
= !!(d
& TP_NVRAM_MASK_HKT_ZOOM
);
2347 n
->display_toggle
= !!(d
& TP_NVRAM_MASK_HKT_DISPLAY
);
2348 n
->hibernate_toggle
= !!(d
& TP_NVRAM_MASK_HKT_HIBERNATE
);
2350 if (m
& TP_ACPI_HKEY_THNKLGHT_MASK
) {
2351 d
= nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT
);
2352 n
->thinklight_toggle
= !!(d
& TP_NVRAM_MASK_THINKLIGHT
);
2354 if (m
& TP_ACPI_HKEY_DISPXPAND_MASK
) {
2355 d
= nvram_read_byte(TP_NVRAM_ADDR_VIDEO
);
2356 n
->displayexp_toggle
=
2357 !!(d
& TP_NVRAM_MASK_HKT_DISPEXPND
);
2359 if (m
& TP_NVRAM_HKEY_GROUP_BRIGHTNESS
) {
2360 d
= nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
);
2361 n
->brightness_level
= (d
& TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
2362 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
2363 n
->brightness_toggle
=
2364 !!(d
& TP_NVRAM_MASK_HKT_BRIGHTNESS
);
2366 if (m
& TP_NVRAM_HKEY_GROUP_VOLUME
) {
2367 d
= nvram_read_byte(TP_NVRAM_ADDR_MIXER
);
2368 n
->volume_level
= (d
& TP_NVRAM_MASK_LEVEL_VOLUME
)
2369 >> TP_NVRAM_POS_LEVEL_VOLUME
;
2370 n
->mute
= !!(d
& TP_NVRAM_MASK_MUTE
);
2371 n
->volume_toggle
= !!(d
& TP_NVRAM_MASK_HKT_VOLUME
);
2375 static void hotkey_compare_and_issue_event(struct tp_nvram_state
*oldn
,
2376 struct tp_nvram_state
*newn
,
2377 const u32 event_mask
)
2380 #define TPACPI_COMPARE_KEY(__scancode, __member) \
2382 if ((event_mask & (1 << __scancode)) && \
2383 oldn->__member != newn->__member) \
2384 tpacpi_hotkey_send_key(__scancode); \
2387 #define TPACPI_MAY_SEND_KEY(__scancode) \
2389 if (event_mask & (1 << __scancode)) \
2390 tpacpi_hotkey_send_key(__scancode); \
2393 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD
, thinkpad_toggle
);
2394 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE
, zoom_toggle
);
2395 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7
, display_toggle
);
2396 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12
, hibernate_toggle
);
2398 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP
, thinklight_toggle
);
2400 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8
, displayexp_toggle
);
2403 if (oldn
->volume_toggle
!= newn
->volume_toggle
) {
2404 if (oldn
->mute
!= newn
->mute
) {
2405 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE
);
2407 if (oldn
->volume_level
> newn
->volume_level
) {
2408 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
2409 } else if (oldn
->volume_level
< newn
->volume_level
) {
2410 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
2411 } else if (oldn
->mute
== newn
->mute
) {
2412 /* repeated key presses that didn't change state */
2414 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE
);
2415 } else if (newn
->volume_level
!= 0) {
2416 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
2418 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
2423 /* handle brightness */
2424 if (oldn
->brightness_toggle
!= newn
->brightness_toggle
) {
2425 if (oldn
->brightness_level
< newn
->brightness_level
) {
2426 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
2427 } else if (oldn
->brightness_level
> newn
->brightness_level
) {
2428 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
2430 /* repeated key presses that didn't change state */
2431 if (newn
->brightness_level
!= 0) {
2432 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
2434 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
2439 #undef TPACPI_COMPARE_KEY
2440 #undef TPACPI_MAY_SEND_KEY
2446 * We track all events in hotkey_source_mask all the time, since
2447 * most of them are edge-based. We only issue those requested by
2448 * hotkey_user_mask or hotkey_driver_mask, though.
2450 static int hotkey_kthread(void *data
)
2452 struct tp_nvram_state s
[2];
2453 u32 poll_mask
, event_mask
;
2454 unsigned int si
, so
;
2456 unsigned int change_detector
, must_reset
;
2457 unsigned int poll_freq
;
2459 mutex_lock(&hotkey_thread_mutex
);
2461 if (tpacpi_lifecycle
== TPACPI_LIFE_EXITING
)
2470 /* Initial state for compares */
2471 mutex_lock(&hotkey_thread_data_mutex
);
2472 change_detector
= hotkey_config_change
;
2473 poll_mask
= hotkey_source_mask
;
2474 event_mask
= hotkey_source_mask
&
2475 (hotkey_driver_mask
| hotkey_user_mask
);
2476 poll_freq
= hotkey_poll_freq
;
2477 mutex_unlock(&hotkey_thread_data_mutex
);
2478 hotkey_read_nvram(&s
[so
], poll_mask
);
2480 while (!kthread_should_stop()) {
2482 if (likely(poll_freq
))
2485 t
= 100; /* should never happen... */
2487 t
= msleep_interruptible(t
);
2488 if (unlikely(kthread_should_stop()))
2490 must_reset
= try_to_freeze();
2491 if (t
> 0 && !must_reset
)
2494 mutex_lock(&hotkey_thread_data_mutex
);
2495 if (must_reset
|| hotkey_config_change
!= change_detector
) {
2496 /* forget old state on thaw or config change */
2499 change_detector
= hotkey_config_change
;
2501 poll_mask
= hotkey_source_mask
;
2502 event_mask
= hotkey_source_mask
&
2503 (hotkey_driver_mask
| hotkey_user_mask
);
2504 poll_freq
= hotkey_poll_freq
;
2505 mutex_unlock(&hotkey_thread_data_mutex
);
2507 if (likely(poll_mask
)) {
2508 hotkey_read_nvram(&s
[si
], poll_mask
);
2509 if (likely(si
!= so
)) {
2510 hotkey_compare_and_issue_event(&s
[so
], &s
[si
],
2520 mutex_unlock(&hotkey_thread_mutex
);
2524 /* call with hotkey_mutex held */
2525 static void hotkey_poll_stop_sync(void)
2527 if (tpacpi_hotkey_task
) {
2528 if (frozen(tpacpi_hotkey_task
) ||
2529 freezing(tpacpi_hotkey_task
))
2530 thaw_process(tpacpi_hotkey_task
);
2532 kthread_stop(tpacpi_hotkey_task
);
2533 tpacpi_hotkey_task
= NULL
;
2534 mutex_lock(&hotkey_thread_mutex
);
2535 /* at this point, the thread did exit */
2536 mutex_unlock(&hotkey_thread_mutex
);
2540 /* call with hotkey_mutex held */
2541 static void hotkey_poll_setup(bool may_warn
)
2543 const u32 poll_driver_mask
= hotkey_driver_mask
& hotkey_source_mask
;
2544 const u32 poll_user_mask
= hotkey_user_mask
& hotkey_source_mask
;
2546 if (hotkey_poll_freq
> 0 &&
2547 (poll_driver_mask
||
2548 (poll_user_mask
&& tpacpi_inputdev
->users
> 0))) {
2549 if (!tpacpi_hotkey_task
) {
2550 tpacpi_hotkey_task
= kthread_run(hotkey_kthread
,
2551 NULL
, TPACPI_NVRAM_KTHREAD_NAME
);
2552 if (IS_ERR(tpacpi_hotkey_task
)) {
2553 tpacpi_hotkey_task
= NULL
;
2555 "could not create kernel thread "
2556 "for hotkey polling\n");
2560 hotkey_poll_stop_sync();
2561 if (may_warn
&& (poll_driver_mask
|| poll_user_mask
) &&
2562 hotkey_poll_freq
== 0) {
2563 printk(TPACPI_NOTICE
2564 "hot keys 0x%08x and/or events 0x%08x "
2565 "require polling, which is currently "
2567 poll_user_mask
, poll_driver_mask
);
2572 static void hotkey_poll_setup_safe(bool may_warn
)
2574 mutex_lock(&hotkey_mutex
);
2575 hotkey_poll_setup(may_warn
);
2576 mutex_unlock(&hotkey_mutex
);
2579 /* call with hotkey_mutex held */
2580 static void hotkey_poll_set_freq(unsigned int freq
)
2583 hotkey_poll_stop_sync();
2585 hotkey_poll_freq
= freq
;
2588 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2590 static void hotkey_poll_setup_safe(bool __unused
)
2594 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2596 static int hotkey_inputdev_open(struct input_dev
*dev
)
2598 switch (tpacpi_lifecycle
) {
2599 case TPACPI_LIFE_INIT
:
2601 * hotkey_init will call hotkey_poll_setup_safe
2602 * at the appropriate moment
2605 case TPACPI_LIFE_EXITING
:
2607 case TPACPI_LIFE_RUNNING
:
2608 hotkey_poll_setup_safe(false);
2612 /* Should only happen if tpacpi_lifecycle is corrupt */
2617 static void hotkey_inputdev_close(struct input_dev
*dev
)
2619 /* disable hotkey polling when possible */
2620 if (tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
&&
2621 !(hotkey_source_mask
& hotkey_driver_mask
))
2622 hotkey_poll_setup_safe(false);
2625 /* sysfs hotkey enable ------------------------------------------------- */
2626 static ssize_t
hotkey_enable_show(struct device
*dev
,
2627 struct device_attribute
*attr
,
2632 printk_deprecated_attribute("hotkey_enable",
2633 "Hotkey reporting is always enabled");
2635 res
= hotkey_status_get(&status
);
2639 return snprintf(buf
, PAGE_SIZE
, "%d\n", status
);
2642 static ssize_t
hotkey_enable_store(struct device
*dev
,
2643 struct device_attribute
*attr
,
2644 const char *buf
, size_t count
)
2648 printk_deprecated_attribute("hotkey_enable",
2649 "Hotkeys can be disabled through hotkey_mask");
2651 if (parse_strtoul(buf
, 1, &t
))
2660 static struct device_attribute dev_attr_hotkey_enable
=
2661 __ATTR(hotkey_enable
, S_IWUSR
| S_IRUGO
,
2662 hotkey_enable_show
, hotkey_enable_store
);
2664 /* sysfs hotkey mask --------------------------------------------------- */
2665 static ssize_t
hotkey_mask_show(struct device
*dev
,
2666 struct device_attribute
*attr
,
2669 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_user_mask
);
2672 static ssize_t
hotkey_mask_store(struct device
*dev
,
2673 struct device_attribute
*attr
,
2674 const char *buf
, size_t count
)
2679 if (parse_strtoul(buf
, 0xffffffffUL
, &t
))
2682 if (mutex_lock_killable(&hotkey_mutex
))
2683 return -ERESTARTSYS
;
2685 res
= hotkey_user_mask_set(t
);
2687 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2688 hotkey_poll_setup(true);
2691 mutex_unlock(&hotkey_mutex
);
2693 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t
);
2695 return (res
) ? res
: count
;
2698 static struct device_attribute dev_attr_hotkey_mask
=
2699 __ATTR(hotkey_mask
, S_IWUSR
| S_IRUGO
,
2700 hotkey_mask_show
, hotkey_mask_store
);
2702 /* sysfs hotkey bios_enabled ------------------------------------------- */
2703 static ssize_t
hotkey_bios_enabled_show(struct device
*dev
,
2704 struct device_attribute
*attr
,
2707 return sprintf(buf
, "0\n");
2710 static struct device_attribute dev_attr_hotkey_bios_enabled
=
2711 __ATTR(hotkey_bios_enabled
, S_IRUGO
, hotkey_bios_enabled_show
, NULL
);
2713 /* sysfs hotkey bios_mask ---------------------------------------------- */
2714 static ssize_t
hotkey_bios_mask_show(struct device
*dev
,
2715 struct device_attribute
*attr
,
2718 printk_deprecated_attribute("hotkey_bios_mask",
2719 "This attribute is useless.");
2720 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_orig_mask
);
2723 static struct device_attribute dev_attr_hotkey_bios_mask
=
2724 __ATTR(hotkey_bios_mask
, S_IRUGO
, hotkey_bios_mask_show
, NULL
);
2726 /* sysfs hotkey all_mask ----------------------------------------------- */
2727 static ssize_t
hotkey_all_mask_show(struct device
*dev
,
2728 struct device_attribute
*attr
,
2731 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
2732 hotkey_all_mask
| hotkey_source_mask
);
2735 static struct device_attribute dev_attr_hotkey_all_mask
=
2736 __ATTR(hotkey_all_mask
, S_IRUGO
, hotkey_all_mask_show
, NULL
);
2738 /* sysfs hotkey recommended_mask --------------------------------------- */
2739 static ssize_t
hotkey_recommended_mask_show(struct device
*dev
,
2740 struct device_attribute
*attr
,
2743 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
2744 (hotkey_all_mask
| hotkey_source_mask
)
2745 & ~hotkey_reserved_mask
);
2748 static struct device_attribute dev_attr_hotkey_recommended_mask
=
2749 __ATTR(hotkey_recommended_mask
, S_IRUGO
,
2750 hotkey_recommended_mask_show
, NULL
);
2752 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2754 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
2755 static ssize_t
hotkey_source_mask_show(struct device
*dev
,
2756 struct device_attribute
*attr
,
2759 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_source_mask
);
2762 static ssize_t
hotkey_source_mask_store(struct device
*dev
,
2763 struct device_attribute
*attr
,
2764 const char *buf
, size_t count
)
2770 if (parse_strtoul(buf
, 0xffffffffUL
, &t
) ||
2771 ((t
& ~TPACPI_HKEY_NVRAM_KNOWN_MASK
) != 0))
2774 if (mutex_lock_killable(&hotkey_mutex
))
2775 return -ERESTARTSYS
;
2777 HOTKEY_CONFIG_CRITICAL_START
2778 hotkey_source_mask
= t
;
2779 HOTKEY_CONFIG_CRITICAL_END
2781 rc
= hotkey_mask_set((hotkey_user_mask
| hotkey_driver_mask
) &
2782 ~hotkey_source_mask
);
2783 hotkey_poll_setup(true);
2785 /* check if events needed by the driver got disabled */
2786 r_ev
= hotkey_driver_mask
& ~(hotkey_acpi_mask
& hotkey_all_mask
)
2787 & ~hotkey_source_mask
& TPACPI_HKEY_NVRAM_KNOWN_MASK
;
2789 mutex_unlock(&hotkey_mutex
);
2792 printk(TPACPI_ERR
"hotkey_source_mask: failed to update the"
2793 "firmware event mask!\n");
2796 printk(TPACPI_NOTICE
"hotkey_source_mask: "
2797 "some important events were disabled: "
2800 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t
);
2802 return (rc
< 0) ? rc
: count
;
2805 static struct device_attribute dev_attr_hotkey_source_mask
=
2806 __ATTR(hotkey_source_mask
, S_IWUSR
| S_IRUGO
,
2807 hotkey_source_mask_show
, hotkey_source_mask_store
);
2809 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2810 static ssize_t
hotkey_poll_freq_show(struct device
*dev
,
2811 struct device_attribute
*attr
,
2814 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_poll_freq
);
2817 static ssize_t
hotkey_poll_freq_store(struct device
*dev
,
2818 struct device_attribute
*attr
,
2819 const char *buf
, size_t count
)
2823 if (parse_strtoul(buf
, 25, &t
))
2826 if (mutex_lock_killable(&hotkey_mutex
))
2827 return -ERESTARTSYS
;
2829 hotkey_poll_set_freq(t
);
2830 hotkey_poll_setup(true);
2832 mutex_unlock(&hotkey_mutex
);
2834 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t
);
2839 static struct device_attribute dev_attr_hotkey_poll_freq
=
2840 __ATTR(hotkey_poll_freq
, S_IWUSR
| S_IRUGO
,
2841 hotkey_poll_freq_show
, hotkey_poll_freq_store
);
2843 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2845 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
2846 static ssize_t
hotkey_radio_sw_show(struct device
*dev
,
2847 struct device_attribute
*attr
,
2851 res
= hotkey_get_wlsw();
2855 /* Opportunistic update */
2856 tpacpi_rfk_update_hwblock_state((res
== TPACPI_RFK_RADIO_OFF
));
2858 return snprintf(buf
, PAGE_SIZE
, "%d\n",
2859 (res
== TPACPI_RFK_RADIO_OFF
) ? 0 : 1);
2862 static struct device_attribute dev_attr_hotkey_radio_sw
=
2863 __ATTR(hotkey_radio_sw
, S_IRUGO
, hotkey_radio_sw_show
, NULL
);
2865 static void hotkey_radio_sw_notify_change(void)
2867 if (tp_features
.hotkey_wlsw
)
2868 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2872 /* sysfs hotkey tablet mode (pollable) --------------------------------- */
2873 static ssize_t
hotkey_tablet_mode_show(struct device
*dev
,
2874 struct device_attribute
*attr
,
2878 res
= hotkey_get_tablet_mode(&s
);
2882 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!s
);
2885 static struct device_attribute dev_attr_hotkey_tablet_mode
=
2886 __ATTR(hotkey_tablet_mode
, S_IRUGO
, hotkey_tablet_mode_show
, NULL
);
2888 static void hotkey_tablet_mode_notify_change(void)
2890 if (tp_features
.hotkey_tablet
)
2891 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2892 "hotkey_tablet_mode");
2895 /* sysfs hotkey report_mode -------------------------------------------- */
2896 static ssize_t
hotkey_report_mode_show(struct device
*dev
,
2897 struct device_attribute
*attr
,
2900 return snprintf(buf
, PAGE_SIZE
, "%d\n",
2901 (hotkey_report_mode
!= 0) ? hotkey_report_mode
: 1);
2904 static struct device_attribute dev_attr_hotkey_report_mode
=
2905 __ATTR(hotkey_report_mode
, S_IRUGO
, hotkey_report_mode_show
, NULL
);
2907 /* sysfs wakeup reason (pollable) -------------------------------------- */
2908 static ssize_t
hotkey_wakeup_reason_show(struct device
*dev
,
2909 struct device_attribute
*attr
,
2912 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_wakeup_reason
);
2915 static struct device_attribute dev_attr_hotkey_wakeup_reason
=
2916 __ATTR(wakeup_reason
, S_IRUGO
, hotkey_wakeup_reason_show
, NULL
);
2918 static void hotkey_wakeup_reason_notify_change(void)
2920 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2924 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
2925 static ssize_t
hotkey_wakeup_hotunplug_complete_show(struct device
*dev
,
2926 struct device_attribute
*attr
,
2929 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_autosleep_ack
);
2932 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete
=
2933 __ATTR(wakeup_hotunplug_complete
, S_IRUGO
,
2934 hotkey_wakeup_hotunplug_complete_show
, NULL
);
2936 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
2938 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2939 "wakeup_hotunplug_complete");
2942 /* --------------------------------------------------------------------- */
2944 static struct attribute
*hotkey_attributes
[] __initdata
= {
2945 &dev_attr_hotkey_enable
.attr
,
2946 &dev_attr_hotkey_bios_enabled
.attr
,
2947 &dev_attr_hotkey_bios_mask
.attr
,
2948 &dev_attr_hotkey_report_mode
.attr
,
2949 &dev_attr_hotkey_wakeup_reason
.attr
,
2950 &dev_attr_hotkey_wakeup_hotunplug_complete
.attr
,
2951 &dev_attr_hotkey_mask
.attr
,
2952 &dev_attr_hotkey_all_mask
.attr
,
2953 &dev_attr_hotkey_recommended_mask
.attr
,
2954 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2955 &dev_attr_hotkey_source_mask
.attr
,
2956 &dev_attr_hotkey_poll_freq
.attr
,
2961 * Sync both the hw and sw blocking state of all switches
2963 static void tpacpi_send_radiosw_update(void)
2968 * We must sync all rfkill controllers *before* issuing any
2969 * rfkill input events, or we will race the rfkill core input
2972 * tpacpi_inputdev_send_mutex works as a syncronization point
2975 * We optimize to avoid numerous calls to hotkey_get_wlsw.
2978 wlsw
= hotkey_get_wlsw();
2980 /* Sync hw blocking state first if it is hw-blocked */
2981 if (wlsw
== TPACPI_RFK_RADIO_OFF
)
2982 tpacpi_rfk_update_hwblock_state(true);
2984 /* Sync sw blocking state */
2985 tpacpi_rfk_update_swstate_all();
2987 /* Sync hw blocking state last if it is hw-unblocked */
2988 if (wlsw
== TPACPI_RFK_RADIO_ON
)
2989 tpacpi_rfk_update_hwblock_state(false);
2991 /* Issue rfkill input event for WLSW switch */
2993 mutex_lock(&tpacpi_inputdev_send_mutex
);
2995 input_report_switch(tpacpi_inputdev
,
2996 SW_RFKILL_ALL
, (wlsw
> 0));
2997 input_sync(tpacpi_inputdev
);
2999 mutex_unlock(&tpacpi_inputdev_send_mutex
);
3003 * this can be unconditional, as we will poll state again
3004 * if userspace uses the notify to read data
3006 hotkey_radio_sw_notify_change();
3009 static void hotkey_exit(void)
3011 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3012 mutex_lock(&hotkey_mutex
);
3013 hotkey_poll_stop_sync();
3014 mutex_unlock(&hotkey_mutex
);
3017 if (hotkey_dev_attributes
)
3018 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
3020 kfree(hotkey_keycode_map
);
3022 dbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_HKEY
,
3023 "restoring original HKEY status and mask\n");
3024 /* yes, there is a bitwise or below, we want the
3025 * functions to be called even if one of them fail */
3026 if (((tp_features
.hotkey_mask
&&
3027 hotkey_mask_set(hotkey_orig_mask
)) |
3028 hotkey_status_set(false)) != 0)
3030 "failed to restore hot key mask "
3031 "to BIOS defaults\n");
3034 static void __init
hotkey_unmap(const unsigned int scancode
)
3036 if (hotkey_keycode_map
[scancode
] != KEY_RESERVED
) {
3037 clear_bit(hotkey_keycode_map
[scancode
],
3038 tpacpi_inputdev
->keybit
);
3039 hotkey_keycode_map
[scancode
] = KEY_RESERVED
;
3045 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3048 #define TPACPI_HK_Q_INIMASK 0x0001
3050 static const struct tpacpi_quirk tpacpi_hotkey_qtable
[] __initconst
= {
3051 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK
), /* 600E */
3052 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK
), /* 600E */
3053 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK
), /* 770, 770E, 770ED */
3054 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK
), /* A20m */
3055 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK
), /* A20p */
3056 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK
), /* A21e, A22e */
3057 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK
), /* A21e */
3058 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK
), /* A21m, A22m */
3059 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK
), /* A21p, A22p */
3060 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK
), /* A22e */
3061 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK
), /* A22m */
3062 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK
), /* A30/p (0) */
3063 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK
), /* R30 */
3064 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK
), /* R31 */
3065 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK
), /* T20 */
3066 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK
), /* T21 */
3067 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK
), /* T22 */
3068 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK
), /* X20, X21 */
3069 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK
), /* X22, X23, X24 */
3072 static int __init
hotkey_init(struct ibm_init_struct
*iibm
)
3074 /* Requirements for changing the default keymaps:
3076 * 1. Many of the keys are mapped to KEY_RESERVED for very
3077 * good reasons. Do not change them unless you have deep
3078 * knowledge on the IBM and Lenovo ThinkPad firmware for
3079 * the various ThinkPad models. The driver behaves
3080 * differently for KEY_RESERVED: such keys have their
3081 * hot key mask *unset* in mask_recommended, and also
3082 * in the initial hot key mask programmed into the
3083 * firmware at driver load time, which means the firm-
3084 * ware may react very differently if you change them to
3087 * 2. You must be subscribed to the linux-thinkpad and
3088 * ibm-acpi-devel mailing lists, and you should read the
3089 * list archives since 2007 if you want to change the
3090 * keymaps. This requirement exists so that you will
3091 * know the past history of problems with the thinkpad-
3092 * acpi driver keymaps, and also that you will be
3093 * listening to any bug reports;
3095 * 3. Do not send thinkpad-acpi specific patches directly to
3096 * for merging, *ever*. Send them to the linux-acpi
3097 * mailinglist for comments. Merging is to be done only
3098 * through acpi-test and the ACPI maintainer.
3100 * If the above is too much to ask, don't change the keymap.
3101 * Ask the thinkpad-acpi maintainer to do it, instead.
3103 static u16 ibm_keycode_map
[] __initdata
= {
3104 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3105 KEY_FN_F1
, KEY_FN_F2
, KEY_COFFEE
, KEY_SLEEP
,
3106 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
3107 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
3109 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
3110 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
3111 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
3112 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
3114 /* brightness: firmware always reacts to them */
3115 KEY_RESERVED
, /* 0x0F: FN+HOME (brightness up) */
3116 KEY_RESERVED
, /* 0x10: FN+END (brightness down) */
3118 /* Thinklight: firmware always react to it */
3119 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
3121 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
3122 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
3124 /* Volume: firmware always react to it and reprograms
3125 * the built-in *extra* mixer. Never map it to control
3126 * another mixer by default. */
3127 KEY_RESERVED
, /* 0x14: VOLUME UP */
3128 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
3129 KEY_RESERVED
, /* 0x16: MUTE */
3131 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
3133 /* (assignments unknown, please report if found) */
3134 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3135 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3137 static u16 lenovo_keycode_map
[] __initdata
= {
3138 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3139 KEY_FN_F1
, KEY_COFFEE
, KEY_BATTERY
, KEY_SLEEP
,
3140 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
3141 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
3143 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
3144 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
3145 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
3146 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
3148 /* These should be enabled --only-- when ACPI video
3149 * is disabled (i.e. in "vendor" mode), and are handled
3150 * in a special way by the init code */
3151 KEY_BRIGHTNESSUP
, /* 0x0F: FN+HOME (brightness up) */
3152 KEY_BRIGHTNESSDOWN
, /* 0x10: FN+END (brightness down) */
3154 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
3156 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
3157 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
3159 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3160 * react to it and reprograms the built-in *extra* mixer.
3161 * Never map it to control another mixer by default.
3163 * T60?, T61, R60?, R61: firmware and EC tries to send
3164 * these over the regular keyboard, so these are no-ops,
3165 * but there are still weird bugs re. MUTE, so do not
3166 * change unless you get test reports from all Lenovo
3167 * models. May cause the BIOS to interfere with the
3170 KEY_RESERVED
, /* 0x14: VOLUME UP */
3171 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
3172 KEY_RESERVED
, /* 0x16: MUTE */
3174 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
3176 /* (assignments unknown, please report if found) */
3177 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3178 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3181 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
3182 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
3183 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
3189 unsigned long quirks
;
3191 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3192 "initializing hotkey subdriver\n");
3194 BUG_ON(!tpacpi_inputdev
);
3195 BUG_ON(tpacpi_inputdev
->open
!= NULL
||
3196 tpacpi_inputdev
->close
!= NULL
);
3198 TPACPI_ACPIHANDLE_INIT(hkey
);
3199 mutex_init(&hotkey_mutex
);
3201 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3202 mutex_init(&hotkey_thread_mutex
);
3203 mutex_init(&hotkey_thread_data_mutex
);
3206 /* hotkey not supported on 570 */
3207 tp_features
.hotkey
= hkey_handle
!= NULL
;
3209 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3211 str_supported(tp_features
.hotkey
));
3213 if (!tp_features
.hotkey
)
3216 quirks
= tpacpi_check_quirks(tpacpi_hotkey_qtable
,
3217 ARRAY_SIZE(tpacpi_hotkey_qtable
));
3219 tpacpi_disable_brightness_delay();
3221 /* MUST have enough space for all attributes to be added to
3222 * hotkey_dev_attributes */
3223 hotkey_dev_attributes
= create_attr_set(
3224 ARRAY_SIZE(hotkey_attributes
) + 2,
3226 if (!hotkey_dev_attributes
)
3228 res
= add_many_to_attr_set(hotkey_dev_attributes
,
3230 ARRAY_SIZE(hotkey_attributes
));
3234 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
3235 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3236 for HKEY interface version 0x100 */
3237 if (acpi_evalf(hkey_handle
, &hkeyv
, "MHKV", "qd")) {
3238 if ((hkeyv
>> 8) != 1) {
3239 printk(TPACPI_ERR
"unknown version of the "
3240 "HKEY interface: 0x%x\n", hkeyv
);
3241 printk(TPACPI_ERR
"please report this to %s\n",
3245 * MHKV 0x100 in A31, R40, R40e,
3246 * T4x, X31, and later
3248 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3249 "firmware HKEY interface version: 0x%x\n",
3252 /* Paranoia check AND init hotkey_all_mask */
3253 if (!acpi_evalf(hkey_handle
, &hotkey_all_mask
,
3256 "missing MHKA handler, "
3257 "please report this to %s\n",
3259 /* Fallback: pre-init for FN+F3,F4,F12 */
3260 hotkey_all_mask
= 0x080cU
;
3262 tp_features
.hotkey_mask
= 1;
3267 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3268 "hotkey masks are %s\n",
3269 str_supported(tp_features
.hotkey_mask
));
3271 /* Init hotkey_all_mask if not initialized yet */
3272 if (!tp_features
.hotkey_mask
&& !hotkey_all_mask
&&
3273 (quirks
& TPACPI_HK_Q_INIMASK
))
3274 hotkey_all_mask
= 0x080cU
; /* FN+F12, FN+F4, FN+F3 */
3276 /* Init hotkey_acpi_mask and hotkey_orig_mask */
3277 if (tp_features
.hotkey_mask
) {
3278 /* hotkey_source_mask *must* be zero for
3279 * the first hotkey_mask_get to return hotkey_orig_mask */
3280 res
= hotkey_mask_get();
3284 hotkey_orig_mask
= hotkey_acpi_mask
;
3286 hotkey_orig_mask
= hotkey_all_mask
;
3287 hotkey_acpi_mask
= hotkey_all_mask
;
3290 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3292 tp_features
.hotkey_wlsw
= 1;
3294 "radio switch emulation enabled\n");
3297 /* Not all thinkpads have a hardware radio switch */
3298 if (acpi_evalf(hkey_handle
, &status
, "WLSW", "qd")) {
3299 tp_features
.hotkey_wlsw
= 1;
3301 "radio switch found; radios are %s\n",
3302 enabled(status
, 0));
3304 if (tp_features
.hotkey_wlsw
)
3305 res
= add_to_attr_set(hotkey_dev_attributes
,
3306 &dev_attr_hotkey_radio_sw
.attr
);
3308 /* For X41t, X60t, X61t Tablets... */
3309 if (!res
&& acpi_evalf(hkey_handle
, &status
, "MHKG", "qd")) {
3310 tp_features
.hotkey_tablet
= 1;
3312 "possible tablet mode switch found; "
3313 "ThinkPad in %s mode\n",
3314 (status
& TP_HOTKEY_TABLET_MASK
)?
3315 "tablet" : "laptop");
3316 res
= add_to_attr_set(hotkey_dev_attributes
,
3317 &dev_attr_hotkey_tablet_mode
.attr
);
3321 res
= register_attr_set_with_sysfs(
3322 hotkey_dev_attributes
,
3323 &tpacpi_pdev
->dev
.kobj
);
3327 /* Set up key map */
3329 hotkey_keycode_map
= kmalloc(TPACPI_HOTKEY_MAP_SIZE
,
3331 if (!hotkey_keycode_map
) {
3333 "failed to allocate memory for key map\n");
3338 if (thinkpad_id
.vendor
== PCI_VENDOR_ID_LENOVO
) {
3339 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3340 "using Lenovo default hot key map\n");
3341 memcpy(hotkey_keycode_map
, &lenovo_keycode_map
,
3342 TPACPI_HOTKEY_MAP_SIZE
);
3344 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3345 "using IBM default hot key map\n");
3346 memcpy(hotkey_keycode_map
, &ibm_keycode_map
,
3347 TPACPI_HOTKEY_MAP_SIZE
);
3350 set_bit(EV_KEY
, tpacpi_inputdev
->evbit
);
3351 set_bit(EV_MSC
, tpacpi_inputdev
->evbit
);
3352 set_bit(MSC_SCAN
, tpacpi_inputdev
->mscbit
);
3353 tpacpi_inputdev
->keycodesize
= TPACPI_HOTKEY_MAP_TYPESIZE
;
3354 tpacpi_inputdev
->keycodemax
= TPACPI_HOTKEY_MAP_LEN
;
3355 tpacpi_inputdev
->keycode
= hotkey_keycode_map
;
3356 for (i
= 0; i
< TPACPI_HOTKEY_MAP_LEN
; i
++) {
3357 if (hotkey_keycode_map
[i
] != KEY_RESERVED
) {
3358 set_bit(hotkey_keycode_map
[i
],
3359 tpacpi_inputdev
->keybit
);
3361 if (i
< sizeof(hotkey_reserved_mask
)*8)
3362 hotkey_reserved_mask
|= 1 << i
;
3366 if (tp_features
.hotkey_wlsw
) {
3367 set_bit(EV_SW
, tpacpi_inputdev
->evbit
);
3368 set_bit(SW_RFKILL_ALL
, tpacpi_inputdev
->swbit
);
3370 if (tp_features
.hotkey_tablet
) {
3371 set_bit(EV_SW
, tpacpi_inputdev
->evbit
);
3372 set_bit(SW_TABLET_MODE
, tpacpi_inputdev
->swbit
);
3375 /* Do not issue duplicate brightness change events to
3377 if (!tp_features
.bright_acpimode
)
3378 /* update bright_acpimode... */
3379 tpacpi_check_std_acpi_brightness_support();
3381 if (tp_features
.bright_acpimode
&& acpi_video_backlight_support()) {
3383 "This ThinkPad has standard ACPI backlight "
3384 "brightness control, supported by the ACPI "
3386 printk(TPACPI_NOTICE
3387 "Disabling thinkpad-acpi brightness events "
3390 /* Disable brightness up/down on Lenovo thinkpads when
3391 * ACPI is handling them, otherwise it is plain impossible
3392 * for userspace to do something even remotely sane */
3393 hotkey_reserved_mask
|=
3394 (1 << TP_ACPI_HOTKEYSCAN_FNHOME
)
3395 | (1 << TP_ACPI_HOTKEYSCAN_FNEND
);
3396 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME
);
3397 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND
);
3400 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3401 hotkey_source_mask
= TPACPI_HKEY_NVRAM_GOOD_MASK
3403 & ~hotkey_reserved_mask
;
3405 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3406 "hotkey source mask 0x%08x, polling freq %u\n",
3407 hotkey_source_mask
, hotkey_poll_freq
);
3410 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3411 "enabling firmware HKEY event interface...\n");
3412 res
= hotkey_status_set(true);
3417 res
= hotkey_mask_set(((hotkey_all_mask
& ~hotkey_reserved_mask
)
3418 | hotkey_driver_mask
)
3419 & ~hotkey_source_mask
);
3420 if (res
< 0 && res
!= -ENXIO
) {
3424 hotkey_user_mask
= (hotkey_acpi_mask
| hotkey_source_mask
)
3425 & ~hotkey_reserved_mask
;
3426 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3427 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3428 hotkey_user_mask
, hotkey_acpi_mask
, hotkey_source_mask
);
3430 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3431 "legacy ibm/hotkey event reporting over procfs %s\n",
3432 (hotkey_report_mode
< 2) ?
3433 "enabled" : "disabled");
3435 tpacpi_inputdev
->open
= &hotkey_inputdev_open
;
3436 tpacpi_inputdev
->close
= &hotkey_inputdev_close
;
3438 hotkey_poll_setup_safe(true);
3439 tpacpi_send_radiosw_update();
3440 tpacpi_input_send_tabletsw();
3445 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
3446 hotkey_dev_attributes
= NULL
;
3448 return (res
< 0)? res
: 1;
3451 static bool hotkey_notify_hotkey(const u32 hkey
,
3453 bool *ignore_acpi_ev
)
3455 /* 0x1000-0x1FFF: key presses */
3456 unsigned int scancode
= hkey
& 0xfff;
3457 *send_acpi_ev
= true;
3458 *ignore_acpi_ev
= false;
3460 if (scancode
> 0 && scancode
< 0x21) {
3462 if (!(hotkey_source_mask
& (1 << scancode
))) {
3463 tpacpi_input_send_key_masked(scancode
);
3464 *send_acpi_ev
= false;
3466 *ignore_acpi_ev
= true;
3473 static bool hotkey_notify_wakeup(const u32 hkey
,
3475 bool *ignore_acpi_ev
)
3477 /* 0x2000-0x2FFF: Wakeup reason */
3478 *send_acpi_ev
= true;
3479 *ignore_acpi_ev
= false;
3482 case TP_HKEY_EV_WKUP_S3_UNDOCK
: /* suspend, undock */
3483 case TP_HKEY_EV_WKUP_S4_UNDOCK
: /* hibernation, undock */
3484 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_UNDOCK
;
3485 *ignore_acpi_ev
= true;
3488 case TP_HKEY_EV_WKUP_S3_BAYEJ
: /* suspend, bay eject */
3489 case TP_HKEY_EV_WKUP_S4_BAYEJ
: /* hibernation, bay eject */
3490 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_BAYEJ
;
3491 *ignore_acpi_ev
= true;
3494 case TP_HKEY_EV_WKUP_S3_BATLOW
: /* Battery on critical low level/S3 */
3495 case TP_HKEY_EV_WKUP_S4_BATLOW
: /* Battery on critical low level/S4 */
3497 "EMERGENCY WAKEUP: battery almost empty\n");
3498 /* how to auto-heal: */
3499 /* 2313: woke up from S3, go to S4/S5 */
3500 /* 2413: woke up from S4, go to S5 */
3507 if (hotkey_wakeup_reason
!= TP_ACPI_WAKEUP_NONE
) {
3509 "woke up due to a hot-unplug "
3511 hotkey_wakeup_reason_notify_change();
3516 static bool hotkey_notify_usrevent(const u32 hkey
,
3518 bool *ignore_acpi_ev
)
3520 /* 0x5000-0x5FFF: human interface helpers */
3521 *send_acpi_ev
= true;
3522 *ignore_acpi_ev
= false;
3525 case TP_HKEY_EV_PEN_INSERTED
: /* X61t: tablet pen inserted into bay */
3526 case TP_HKEY_EV_PEN_REMOVED
: /* X61t: tablet pen removed from bay */
3529 case TP_HKEY_EV_TABLET_TABLET
: /* X41t-X61t: tablet mode */
3530 case TP_HKEY_EV_TABLET_NOTEBOOK
: /* X41t-X61t: normal mode */
3531 tpacpi_input_send_tabletsw();
3532 hotkey_tablet_mode_notify_change();
3533 *send_acpi_ev
= false;
3536 case TP_HKEY_EV_LID_CLOSE
: /* Lid closed */
3537 case TP_HKEY_EV_LID_OPEN
: /* Lid opened */
3538 case TP_HKEY_EV_BRGHT_CHANGED
: /* brightness changed */
3539 /* do not propagate these events */
3540 *ignore_acpi_ev
= true;
3548 static bool hotkey_notify_thermal(const u32 hkey
,
3550 bool *ignore_acpi_ev
)
3552 /* 0x6000-0x6FFF: thermal alarms */
3553 *send_acpi_ev
= true;
3554 *ignore_acpi_ev
= false;
3557 case TP_HKEY_EV_ALARM_BAT_HOT
:
3559 "THERMAL ALARM: battery is too hot!\n");
3560 /* recommended action: warn user through gui */
3562 case TP_HKEY_EV_ALARM_BAT_XHOT
:
3564 "THERMAL EMERGENCY: battery is extremely hot!\n");
3565 /* recommended action: immediate sleep/hibernate */
3567 case TP_HKEY_EV_ALARM_SENSOR_HOT
:
3570 "a sensor reports something is too hot!\n");
3571 /* recommended action: warn user through gui, that */
3572 /* some internal component is too hot */
3574 case TP_HKEY_EV_ALARM_SENSOR_XHOT
:
3576 "THERMAL EMERGENCY: "
3577 "a sensor reports something is extremely hot!\n");
3578 /* recommended action: immediate sleep/hibernate */
3580 case TP_HKEY_EV_THM_TABLE_CHANGED
:
3582 "EC reports that Thermal Table has changed\n");
3583 /* recommended action: do nothing, we don't have
3584 * Lenovo ATM information */
3588 "THERMAL ALERT: unknown thermal alarm received\n");
3593 static void hotkey_notify(struct ibm_struct
*ibm
, u32 event
)
3597 bool ignore_acpi_ev
;
3600 if (event
!= 0x80) {
3602 "unknown HKEY notification event %d\n", event
);
3603 /* forward it to userspace, maybe it knows how to handle it */
3604 acpi_bus_generate_netlink_event(
3605 ibm
->acpi
->device
->pnp
.device_class
,
3606 dev_name(&ibm
->acpi
->device
->dev
),
3612 if (!acpi_evalf(hkey_handle
, &hkey
, "MHKP", "d")) {
3613 printk(TPACPI_ERR
"failed to retrieve HKEY event\n");
3622 send_acpi_ev
= true;
3623 ignore_acpi_ev
= false;
3625 switch (hkey
>> 12) {
3627 /* 0x1000-0x1FFF: key presses */
3628 known_ev
= hotkey_notify_hotkey(hkey
, &send_acpi_ev
,
3632 /* 0x2000-0x2FFF: Wakeup reason */
3633 known_ev
= hotkey_notify_wakeup(hkey
, &send_acpi_ev
,
3637 /* 0x3000-0x3FFF: bay-related wakeups */
3638 if (hkey
== TP_HKEY_EV_BAYEJ_ACK
) {
3639 hotkey_autosleep_ack
= 1;
3642 hotkey_wakeup_hotunplug_complete_notify_change();
3649 /* 0x4000-0x4FFF: dock-related wakeups */
3650 if (hkey
== TP_HKEY_EV_UNDOCK_ACK
) {
3651 hotkey_autosleep_ack
= 1;
3654 hotkey_wakeup_hotunplug_complete_notify_change();
3661 /* 0x5000-0x5FFF: human interface helpers */
3662 known_ev
= hotkey_notify_usrevent(hkey
, &send_acpi_ev
,
3666 /* 0x6000-0x6FFF: thermal alarms */
3667 known_ev
= hotkey_notify_thermal(hkey
, &send_acpi_ev
,
3671 /* 0x7000-0x7FFF: misc */
3672 if (tp_features
.hotkey_wlsw
&&
3673 hkey
== TP_HKEY_EV_RFKILL_CHANGED
) {
3674 tpacpi_send_radiosw_update();
3679 /* fallthrough to default */
3684 printk(TPACPI_NOTICE
3685 "unhandled HKEY event 0x%04x\n", hkey
);
3686 printk(TPACPI_NOTICE
3687 "please report the conditions when this "
3688 "event happened to %s\n", TPACPI_MAIL
);
3692 if (!ignore_acpi_ev
&&
3693 (send_acpi_ev
|| hotkey_report_mode
< 2)) {
3694 acpi_bus_generate_proc_event(ibm
->acpi
->device
,
3698 /* netlink events */
3699 if (!ignore_acpi_ev
&& send_acpi_ev
) {
3700 acpi_bus_generate_netlink_event(
3701 ibm
->acpi
->device
->pnp
.device_class
,
3702 dev_name(&ibm
->acpi
->device
->dev
),
3708 static void hotkey_suspend(pm_message_t state
)
3710 /* Do these on suspend, we get the events on early resume! */
3711 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_NONE
;
3712 hotkey_autosleep_ack
= 0;
3715 static void hotkey_resume(void)
3717 tpacpi_disable_brightness_delay();
3719 if (hotkey_status_set(true) < 0 ||
3720 hotkey_mask_set(hotkey_acpi_mask
) < 0)
3722 "error while attempting to reset the event "
3723 "firmware interface\n");
3725 tpacpi_send_radiosw_update();
3726 hotkey_tablet_mode_notify_change();
3727 hotkey_wakeup_reason_notify_change();
3728 hotkey_wakeup_hotunplug_complete_notify_change();
3729 hotkey_poll_setup_safe(false);
3732 /* procfs -------------------------------------------------------------- */
3733 static int hotkey_read(char *p
)
3738 if (!tp_features
.hotkey
) {
3739 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
3743 if (mutex_lock_killable(&hotkey_mutex
))
3744 return -ERESTARTSYS
;
3745 res
= hotkey_status_get(&status
);
3747 res
= hotkey_mask_get();
3748 mutex_unlock(&hotkey_mutex
);
3752 len
+= sprintf(p
+ len
, "status:\t\t%s\n", enabled(status
, 0));
3753 if (hotkey_all_mask
) {
3754 len
+= sprintf(p
+ len
, "mask:\t\t0x%08x\n", hotkey_user_mask
);
3755 len
+= sprintf(p
+ len
,
3756 "commands:\tenable, disable, reset, <mask>\n");
3758 len
+= sprintf(p
+ len
, "mask:\t\tnot supported\n");
3759 len
+= sprintf(p
+ len
, "commands:\tenable, disable, reset\n");
3765 static void hotkey_enabledisable_warn(bool enable
)
3767 tpacpi_log_usertask("procfs hotkey enable/disable");
3768 if (!WARN((tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
|| !enable
),
3770 "hotkey enable/disable functionality has been "
3771 "removed from the driver. Hotkeys are always "
3774 "Please remove the hotkey=enable module "
3775 "parameter, it is deprecated. Hotkeys are always "
3779 static int hotkey_write(char *buf
)
3785 if (!tp_features
.hotkey
)
3788 if (mutex_lock_killable(&hotkey_mutex
))
3789 return -ERESTARTSYS
;
3791 mask
= hotkey_user_mask
;
3794 while ((cmd
= next_cmd(&buf
))) {
3795 if (strlencmp(cmd
, "enable") == 0) {
3796 hotkey_enabledisable_warn(1);
3797 } else if (strlencmp(cmd
, "disable") == 0) {
3798 hotkey_enabledisable_warn(0);
3800 } else if (strlencmp(cmd
, "reset") == 0) {
3801 mask
= (hotkey_all_mask
| hotkey_source_mask
)
3802 & ~hotkey_reserved_mask
;
3803 } else if (sscanf(cmd
, "0x%x", &mask
) == 1) {
3805 } else if (sscanf(cmd
, "%x", &mask
) == 1) {
3814 tpacpi_disclose_usertask("procfs hotkey",
3815 "set mask to 0x%08x\n", mask
);
3816 res
= hotkey_user_mask_set(mask
);
3820 mutex_unlock(&hotkey_mutex
);
3824 static const struct acpi_device_id ibm_htk_device_ids
[] = {
3825 {TPACPI_ACPI_HKEY_HID
, 0},
3829 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
= {
3830 .hid
= ibm_htk_device_ids
,
3831 .notify
= hotkey_notify
,
3832 .handle
= &hkey_handle
,
3833 .type
= ACPI_DEVICE_NOTIFY
,
3836 static struct ibm_struct hotkey_driver_data
= {
3838 .read
= hotkey_read
,
3839 .write
= hotkey_write
,
3840 .exit
= hotkey_exit
,
3841 .resume
= hotkey_resume
,
3842 .suspend
= hotkey_suspend
,
3843 .acpi
= &ibm_hotkey_acpidriver
,
3846 /*************************************************************************
3847 * Bluetooth subdriver
3851 /* ACPI GBDC/SBDC bits */
3852 TP_ACPI_BLUETOOTH_HWPRESENT
= 0x01, /* Bluetooth hw available */
3853 TP_ACPI_BLUETOOTH_RADIOSSW
= 0x02, /* Bluetooth radio enabled */
3854 TP_ACPI_BLUETOOTH_RESUMECTRL
= 0x04, /* Bluetooth state at resume:
3859 /* ACPI \BLTH commands */
3860 TP_ACPI_BLTH_GET_ULTRAPORT_ID
= 0x00, /* Get Ultraport BT ID */
3861 TP_ACPI_BLTH_GET_PWR_ON_RESUME
= 0x01, /* Get power-on-resume state */
3862 TP_ACPI_BLTH_PWR_ON_ON_RESUME
= 0x02, /* Resume powered on */
3863 TP_ACPI_BLTH_PWR_OFF_ON_RESUME
= 0x03, /* Resume powered off */
3864 TP_ACPI_BLTH_SAVE_STATE
= 0x05, /* Save state for S4/S5 */
3867 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3869 static int bluetooth_get_status(void)
3873 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3874 if (dbg_bluetoothemul
)
3875 return (tpacpi_bluetooth_emulstate
) ?
3876 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
3879 if (!acpi_evalf(hkey_handle
, &status
, "GBDC", "d"))
3882 return ((status
& TP_ACPI_BLUETOOTH_RADIOSSW
) != 0) ?
3883 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
3886 static int bluetooth_set_status(enum tpacpi_rfkill_state state
)
3890 vdbg_printk(TPACPI_DBG_RFKILL
,
3891 "will attempt to %s bluetooth\n",
3892 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
3894 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3895 if (dbg_bluetoothemul
) {
3896 tpacpi_bluetooth_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
3901 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
3902 status
= TP_ACPI_BLUETOOTH_RESUMECTRL
;
3903 if (state
== TPACPI_RFK_RADIO_ON
)
3904 status
|= TP_ACPI_BLUETOOTH_RADIOSSW
;
3906 if (!acpi_evalf(hkey_handle
, NULL
, "SBDC", "vd", status
))
3912 /* sysfs bluetooth enable ---------------------------------------------- */
3913 static ssize_t
bluetooth_enable_show(struct device
*dev
,
3914 struct device_attribute
*attr
,
3917 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID
,
3921 static ssize_t
bluetooth_enable_store(struct device
*dev
,
3922 struct device_attribute
*attr
,
3923 const char *buf
, size_t count
)
3925 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID
,
3929 static struct device_attribute dev_attr_bluetooth_enable
=
3930 __ATTR(bluetooth_enable
, S_IWUSR
| S_IRUGO
,
3931 bluetooth_enable_show
, bluetooth_enable_store
);
3933 /* --------------------------------------------------------------------- */
3935 static struct attribute
*bluetooth_attributes
[] = {
3936 &dev_attr_bluetooth_enable
.attr
,
3940 static const struct attribute_group bluetooth_attr_group
= {
3941 .attrs
= bluetooth_attributes
,
3944 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops
= {
3945 .get_status
= bluetooth_get_status
,
3946 .set_status
= bluetooth_set_status
,
3949 static void bluetooth_shutdown(void)
3951 /* Order firmware to save current state to NVRAM */
3952 if (!acpi_evalf(NULL
, NULL
, "\\BLTH", "vd",
3953 TP_ACPI_BLTH_SAVE_STATE
))
3954 printk(TPACPI_NOTICE
3955 "failed to save bluetooth state to NVRAM\n");
3957 vdbg_printk(TPACPI_DBG_RFKILL
,
3958 "bluestooth state saved to NVRAM\n");
3961 static void bluetooth_exit(void)
3963 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
3964 &bluetooth_attr_group
);
3966 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
);
3968 bluetooth_shutdown();
3971 static int __init
bluetooth_init(struct ibm_init_struct
*iibm
)
3976 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
3977 "initializing bluetooth subdriver\n");
3979 TPACPI_ACPIHANDLE_INIT(hkey
);
3981 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3982 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
3983 tp_features
.bluetooth
= hkey_handle
&&
3984 acpi_evalf(hkey_handle
, &status
, "GBDC", "qd");
3986 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
3987 "bluetooth is %s, status 0x%02x\n",
3988 str_supported(tp_features
.bluetooth
),
3991 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3992 if (dbg_bluetoothemul
) {
3993 tp_features
.bluetooth
= 1;
3995 "bluetooth switch emulation enabled\n");
3998 if (tp_features
.bluetooth
&&
3999 !(status
& TP_ACPI_BLUETOOTH_HWPRESENT
)) {
4000 /* no bluetooth hardware present in system */
4001 tp_features
.bluetooth
= 0;
4002 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4003 "bluetooth hardware not installed\n");
4006 if (!tp_features
.bluetooth
)
4009 res
= tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
,
4010 &bluetooth_tprfk_ops
,
4011 RFKILL_TYPE_BLUETOOTH
,
4012 TPACPI_RFK_BLUETOOTH_SW_NAME
,
4017 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
4018 &bluetooth_attr_group
);
4020 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
);
4027 /* procfs -------------------------------------------------------------- */
4028 static int bluetooth_read(char *p
)
4030 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID
, p
);
4033 static int bluetooth_write(char *buf
)
4035 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID
, buf
);
4038 static struct ibm_struct bluetooth_driver_data
= {
4039 .name
= "bluetooth",
4040 .read
= bluetooth_read
,
4041 .write
= bluetooth_write
,
4042 .exit
= bluetooth_exit
,
4043 .shutdown
= bluetooth_shutdown
,
4046 /*************************************************************************
4051 /* ACPI GWAN/SWAN bits */
4052 TP_ACPI_WANCARD_HWPRESENT
= 0x01, /* Wan hw available */
4053 TP_ACPI_WANCARD_RADIOSSW
= 0x02, /* Wan radio enabled */
4054 TP_ACPI_WANCARD_RESUMECTRL
= 0x04, /* Wan state at resume:
4058 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4060 static int wan_get_status(void)
4064 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4066 return (tpacpi_wwan_emulstate
) ?
4067 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4070 if (!acpi_evalf(hkey_handle
, &status
, "GWAN", "d"))
4073 return ((status
& TP_ACPI_WANCARD_RADIOSSW
) != 0) ?
4074 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4077 static int wan_set_status(enum tpacpi_rfkill_state state
)
4081 vdbg_printk(TPACPI_DBG_RFKILL
,
4082 "will attempt to %s wwan\n",
4083 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
4085 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4087 tpacpi_wwan_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
4092 /* We make sure to set TP_ACPI_WANCARD_RESUMECTRL */
4093 status
= TP_ACPI_WANCARD_RESUMECTRL
;
4094 if (state
== TPACPI_RFK_RADIO_ON
)
4095 status
|= TP_ACPI_WANCARD_RADIOSSW
;
4097 if (!acpi_evalf(hkey_handle
, NULL
, "SWAN", "vd", status
))
4103 /* sysfs wan enable ---------------------------------------------------- */
4104 static ssize_t
wan_enable_show(struct device
*dev
,
4105 struct device_attribute
*attr
,
4108 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID
,
4112 static ssize_t
wan_enable_store(struct device
*dev
,
4113 struct device_attribute
*attr
,
4114 const char *buf
, size_t count
)
4116 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID
,
4120 static struct device_attribute dev_attr_wan_enable
=
4121 __ATTR(wwan_enable
, S_IWUSR
| S_IRUGO
,
4122 wan_enable_show
, wan_enable_store
);
4124 /* --------------------------------------------------------------------- */
4126 static struct attribute
*wan_attributes
[] = {
4127 &dev_attr_wan_enable
.attr
,
4131 static const struct attribute_group wan_attr_group
= {
4132 .attrs
= wan_attributes
,
4135 static const struct tpacpi_rfk_ops wan_tprfk_ops
= {
4136 .get_status
= wan_get_status
,
4137 .set_status
= wan_set_status
,
4140 static void wan_shutdown(void)
4142 /* Order firmware to save current state to NVRAM */
4143 if (!acpi_evalf(NULL
, NULL
, "\\WGSV", "vd",
4144 TP_ACPI_WGSV_SAVE_STATE
))
4145 printk(TPACPI_NOTICE
4146 "failed to save WWAN state to NVRAM\n");
4148 vdbg_printk(TPACPI_DBG_RFKILL
,
4149 "WWAN state saved to NVRAM\n");
4152 static void wan_exit(void)
4154 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
4157 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID
);
4162 static int __init
wan_init(struct ibm_init_struct
*iibm
)
4167 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4168 "initializing wan subdriver\n");
4170 TPACPI_ACPIHANDLE_INIT(hkey
);
4172 tp_features
.wan
= hkey_handle
&&
4173 acpi_evalf(hkey_handle
, &status
, "GWAN", "qd");
4175 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4176 "wan is %s, status 0x%02x\n",
4177 str_supported(tp_features
.wan
),
4180 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4182 tp_features
.wan
= 1;
4184 "wwan switch emulation enabled\n");
4187 if (tp_features
.wan
&&
4188 !(status
& TP_ACPI_WANCARD_HWPRESENT
)) {
4189 /* no wan hardware present in system */
4190 tp_features
.wan
= 0;
4191 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4192 "wan hardware not installed\n");
4195 if (!tp_features
.wan
)
4198 res
= tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID
,
4201 TPACPI_RFK_WWAN_SW_NAME
,
4206 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
4210 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID
);
4217 /* procfs -------------------------------------------------------------- */
4218 static int wan_read(char *p
)
4220 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID
, p
);
4223 static int wan_write(char *buf
)
4225 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID
, buf
);
4228 static struct ibm_struct wan_driver_data
= {
4233 .shutdown
= wan_shutdown
,
4236 /*************************************************************************
4241 /* ACPI GUWB/SUWB bits */
4242 TP_ACPI_UWB_HWPRESENT
= 0x01, /* UWB hw available */
4243 TP_ACPI_UWB_RADIOSSW
= 0x02, /* UWB radio enabled */
4246 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4248 static int uwb_get_status(void)
4252 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4254 return (tpacpi_uwb_emulstate
) ?
4255 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4258 if (!acpi_evalf(hkey_handle
, &status
, "GUWB", "d"))
4261 return ((status
& TP_ACPI_UWB_RADIOSSW
) != 0) ?
4262 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4265 static int uwb_set_status(enum tpacpi_rfkill_state state
)
4269 vdbg_printk(TPACPI_DBG_RFKILL
,
4270 "will attempt to %s UWB\n",
4271 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
4273 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4275 tpacpi_uwb_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
4280 if (state
== TPACPI_RFK_RADIO_ON
)
4281 status
= TP_ACPI_UWB_RADIOSSW
;
4285 if (!acpi_evalf(hkey_handle
, NULL
, "SUWB", "vd", status
))
4291 /* --------------------------------------------------------------------- */
4293 static const struct tpacpi_rfk_ops uwb_tprfk_ops
= {
4294 .get_status
= uwb_get_status
,
4295 .set_status
= uwb_set_status
,
4298 static void uwb_exit(void)
4300 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID
);
4303 static int __init
uwb_init(struct ibm_init_struct
*iibm
)
4308 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4309 "initializing uwb subdriver\n");
4311 TPACPI_ACPIHANDLE_INIT(hkey
);
4313 tp_features
.uwb
= hkey_handle
&&
4314 acpi_evalf(hkey_handle
, &status
, "GUWB", "qd");
4316 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4317 "uwb is %s, status 0x%02x\n",
4318 str_supported(tp_features
.uwb
),
4321 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4323 tp_features
.uwb
= 1;
4325 "uwb switch emulation enabled\n");
4328 if (tp_features
.uwb
&&
4329 !(status
& TP_ACPI_UWB_HWPRESENT
)) {
4330 /* no uwb hardware present in system */
4331 tp_features
.uwb
= 0;
4332 dbg_printk(TPACPI_DBG_INIT
,
4333 "uwb hardware not installed\n");
4336 if (!tp_features
.uwb
)
4339 res
= tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID
,
4342 TPACPI_RFK_UWB_SW_NAME
,
4347 static struct ibm_struct uwb_driver_data
= {
4350 .flags
.experimental
= 1,
4353 /*************************************************************************
4357 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
4359 enum video_access_mode
{
4360 TPACPI_VIDEO_NONE
= 0,
4361 TPACPI_VIDEO_570
, /* 570 */
4362 TPACPI_VIDEO_770
, /* 600e/x, 770e, 770x */
4363 TPACPI_VIDEO_NEW
, /* all others */
4366 enum { /* video status flags, based on VIDEO_570 */
4367 TP_ACPI_VIDEO_S_LCD
= 0x01, /* LCD output enabled */
4368 TP_ACPI_VIDEO_S_CRT
= 0x02, /* CRT output enabled */
4369 TP_ACPI_VIDEO_S_DVI
= 0x08, /* DVI output enabled */
4372 enum { /* TPACPI_VIDEO_570 constants */
4373 TP_ACPI_VIDEO_570_PHSCMD
= 0x87, /* unknown magic constant :( */
4374 TP_ACPI_VIDEO_570_PHSMASK
= 0x03, /* PHS bits that map to
4375 * video_status_flags */
4376 TP_ACPI_VIDEO_570_PHS2CMD
= 0x8b, /* unknown magic constant :( */
4377 TP_ACPI_VIDEO_570_PHS2SET
= 0x80, /* unknown magic constant :( */
4380 static enum video_access_mode video_supported
;
4381 static int video_orig_autosw
;
4383 static int video_autosw_get(void);
4384 static int video_autosw_set(int enable
);
4386 TPACPI_HANDLE(vid2
, root
, "\\_SB.PCI0.AGPB.VID"); /* G41 */
4388 static int __init
video_init(struct ibm_init_struct
*iibm
)
4392 vdbg_printk(TPACPI_DBG_INIT
, "initializing video subdriver\n");
4394 TPACPI_ACPIHANDLE_INIT(vid
);
4395 TPACPI_ACPIHANDLE_INIT(vid2
);
4397 if (vid2_handle
&& acpi_evalf(NULL
, &ivga
, "\\IVGA", "d") && ivga
)
4398 /* G41, assume IVGA doesn't change */
4399 vid_handle
= vid2_handle
;
4402 /* video switching not supported on R30, R31 */
4403 video_supported
= TPACPI_VIDEO_NONE
;
4404 else if (acpi_evalf(vid_handle
, &video_orig_autosw
, "SWIT", "qd"))
4406 video_supported
= TPACPI_VIDEO_570
;
4407 else if (acpi_evalf(vid_handle
, &video_orig_autosw
, "^VADL", "qd"))
4408 /* 600e/x, 770e, 770x */
4409 video_supported
= TPACPI_VIDEO_770
;
4412 video_supported
= TPACPI_VIDEO_NEW
;
4414 vdbg_printk(TPACPI_DBG_INIT
, "video is %s, mode %d\n",
4415 str_supported(video_supported
!= TPACPI_VIDEO_NONE
),
4418 return (video_supported
!= TPACPI_VIDEO_NONE
)? 0 : 1;
4421 static void video_exit(void)
4423 dbg_printk(TPACPI_DBG_EXIT
,
4424 "restoring original video autoswitch mode\n");
4425 if (video_autosw_set(video_orig_autosw
))
4426 printk(TPACPI_ERR
"error while trying to restore original "
4427 "video autoswitch mode\n");
4430 static int video_outputsw_get(void)
4435 switch (video_supported
) {
4436 case TPACPI_VIDEO_570
:
4437 if (!acpi_evalf(NULL
, &i
, "\\_SB.PHS", "dd",
4438 TP_ACPI_VIDEO_570_PHSCMD
))
4440 status
= i
& TP_ACPI_VIDEO_570_PHSMASK
;
4442 case TPACPI_VIDEO_770
:
4443 if (!acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
4446 status
|= TP_ACPI_VIDEO_S_LCD
;
4447 if (!acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
4450 status
|= TP_ACPI_VIDEO_S_CRT
;
4452 case TPACPI_VIDEO_NEW
:
4453 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 1) ||
4454 !acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
4457 status
|= TP_ACPI_VIDEO_S_CRT
;
4459 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0) ||
4460 !acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
4463 status
|= TP_ACPI_VIDEO_S_LCD
;
4464 if (!acpi_evalf(NULL
, &i
, "\\VCDD", "d"))
4467 status
|= TP_ACPI_VIDEO_S_DVI
;
4476 static int video_outputsw_set(int status
)
4481 switch (video_supported
) {
4482 case TPACPI_VIDEO_570
:
4483 res
= acpi_evalf(NULL
, NULL
,
4484 "\\_SB.PHS2", "vdd",
4485 TP_ACPI_VIDEO_570_PHS2CMD
,
4486 status
| TP_ACPI_VIDEO_570_PHS2SET
);
4488 case TPACPI_VIDEO_770
:
4489 autosw
= video_autosw_get();
4493 res
= video_autosw_set(1);
4496 res
= acpi_evalf(vid_handle
, NULL
,
4497 "ASWT", "vdd", status
* 0x100, 0);
4498 if (!autosw
&& video_autosw_set(autosw
)) {
4500 "video auto-switch left enabled due to error\n");
4504 case TPACPI_VIDEO_NEW
:
4505 res
= acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0x80) &&
4506 acpi_evalf(NULL
, NULL
, "\\VSDS", "vdd", status
, 1);
4512 return (res
)? 0 : -EIO
;
4515 static int video_autosw_get(void)
4519 switch (video_supported
) {
4520 case TPACPI_VIDEO_570
:
4521 if (!acpi_evalf(vid_handle
, &autosw
, "SWIT", "d"))
4524 case TPACPI_VIDEO_770
:
4525 case TPACPI_VIDEO_NEW
:
4526 if (!acpi_evalf(vid_handle
, &autosw
, "^VDEE", "d"))
4536 static int video_autosw_set(int enable
)
4538 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", (enable
)? 1 : 0))
4543 static int video_outputsw_cycle(void)
4545 int autosw
= video_autosw_get();
4551 switch (video_supported
) {
4552 case TPACPI_VIDEO_570
:
4553 res
= video_autosw_set(1);
4556 res
= acpi_evalf(ec_handle
, NULL
, "_Q16", "v");
4558 case TPACPI_VIDEO_770
:
4559 case TPACPI_VIDEO_NEW
:
4560 res
= video_autosw_set(1);
4563 res
= acpi_evalf(vid_handle
, NULL
, "VSWT", "v");
4568 if (!autosw
&& video_autosw_set(autosw
)) {
4570 "video auto-switch left enabled due to error\n");
4574 return (res
)? 0 : -EIO
;
4577 static int video_expand_toggle(void)
4579 switch (video_supported
) {
4580 case TPACPI_VIDEO_570
:
4581 return acpi_evalf(ec_handle
, NULL
, "_Q17", "v")?
4583 case TPACPI_VIDEO_770
:
4584 return acpi_evalf(vid_handle
, NULL
, "VEXP", "v")?
4586 case TPACPI_VIDEO_NEW
:
4587 return acpi_evalf(NULL
, NULL
, "\\VEXP", "v")?
4595 static int video_read(char *p
)
4600 if (video_supported
== TPACPI_VIDEO_NONE
) {
4601 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4605 status
= video_outputsw_get();
4609 autosw
= video_autosw_get();
4613 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
4614 len
+= sprintf(p
+ len
, "lcd:\t\t%s\n", enabled(status
, 0));
4615 len
+= sprintf(p
+ len
, "crt:\t\t%s\n", enabled(status
, 1));
4616 if (video_supported
== TPACPI_VIDEO_NEW
)
4617 len
+= sprintf(p
+ len
, "dvi:\t\t%s\n", enabled(status
, 3));
4618 len
+= sprintf(p
+ len
, "auto:\t\t%s\n", enabled(autosw
, 0));
4619 len
+= sprintf(p
+ len
, "commands:\tlcd_enable, lcd_disable\n");
4620 len
+= sprintf(p
+ len
, "commands:\tcrt_enable, crt_disable\n");
4621 if (video_supported
== TPACPI_VIDEO_NEW
)
4622 len
+= sprintf(p
+ len
, "commands:\tdvi_enable, dvi_disable\n");
4623 len
+= sprintf(p
+ len
, "commands:\tauto_enable, auto_disable\n");
4624 len
+= sprintf(p
+ len
, "commands:\tvideo_switch, expand_toggle\n");
4629 static int video_write(char *buf
)
4632 int enable
, disable
, status
;
4635 if (video_supported
== TPACPI_VIDEO_NONE
)
4641 while ((cmd
= next_cmd(&buf
))) {
4642 if (strlencmp(cmd
, "lcd_enable") == 0) {
4643 enable
|= TP_ACPI_VIDEO_S_LCD
;
4644 } else if (strlencmp(cmd
, "lcd_disable") == 0) {
4645 disable
|= TP_ACPI_VIDEO_S_LCD
;
4646 } else if (strlencmp(cmd
, "crt_enable") == 0) {
4647 enable
|= TP_ACPI_VIDEO_S_CRT
;
4648 } else if (strlencmp(cmd
, "crt_disable") == 0) {
4649 disable
|= TP_ACPI_VIDEO_S_CRT
;
4650 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
4651 strlencmp(cmd
, "dvi_enable") == 0) {
4652 enable
|= TP_ACPI_VIDEO_S_DVI
;
4653 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
4654 strlencmp(cmd
, "dvi_disable") == 0) {
4655 disable
|= TP_ACPI_VIDEO_S_DVI
;
4656 } else if (strlencmp(cmd
, "auto_enable") == 0) {
4657 res
= video_autosw_set(1);
4660 } else if (strlencmp(cmd
, "auto_disable") == 0) {
4661 res
= video_autosw_set(0);
4664 } else if (strlencmp(cmd
, "video_switch") == 0) {
4665 res
= video_outputsw_cycle();
4668 } else if (strlencmp(cmd
, "expand_toggle") == 0) {
4669 res
= video_expand_toggle();
4676 if (enable
|| disable
) {
4677 status
= video_outputsw_get();
4680 res
= video_outputsw_set((status
& ~disable
) | enable
);
4688 static struct ibm_struct video_driver_data
= {
4691 .write
= video_write
,
4695 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4697 /*************************************************************************
4698 * Light (thinklight) subdriver
4701 TPACPI_HANDLE(lght
, root
, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4702 TPACPI_HANDLE(ledb
, ec
, "LEDB"); /* G4x */
4704 static int light_get_status(void)
4708 if (tp_features
.light_status
) {
4709 if (!acpi_evalf(ec_handle
, &status
, "KBLT", "d"))
4717 static int light_set_status(int status
)
4721 if (tp_features
.light
) {
4723 rc
= acpi_evalf(cmos_handle
, NULL
, NULL
, "vd",
4725 TP_CMOS_THINKLIGHT_ON
:
4726 TP_CMOS_THINKLIGHT_OFF
);
4728 rc
= acpi_evalf(lght_handle
, NULL
, NULL
, "vd",
4731 return (rc
)? 0 : -EIO
;
4737 static void light_set_status_worker(struct work_struct
*work
)
4739 struct tpacpi_led_classdev
*data
=
4740 container_of(work
, struct tpacpi_led_classdev
, work
);
4742 if (likely(tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
))
4743 light_set_status((data
->new_state
!= TPACPI_LED_OFF
));
4746 static void light_sysfs_set(struct led_classdev
*led_cdev
,
4747 enum led_brightness brightness
)
4749 struct tpacpi_led_classdev
*data
=
4750 container_of(led_cdev
,
4751 struct tpacpi_led_classdev
,
4753 data
->new_state
= (brightness
!= LED_OFF
) ?
4754 TPACPI_LED_ON
: TPACPI_LED_OFF
;
4755 queue_work(tpacpi_wq
, &data
->work
);
4758 static enum led_brightness
light_sysfs_get(struct led_classdev
*led_cdev
)
4760 return (light_get_status() == 1)? LED_FULL
: LED_OFF
;
4763 static struct tpacpi_led_classdev tpacpi_led_thinklight
= {
4765 .name
= "tpacpi::thinklight",
4766 .brightness_set
= &light_sysfs_set
,
4767 .brightness_get
= &light_sysfs_get
,
4771 static int __init
light_init(struct ibm_init_struct
*iibm
)
4775 vdbg_printk(TPACPI_DBG_INIT
, "initializing light subdriver\n");
4777 TPACPI_ACPIHANDLE_INIT(ledb
);
4778 TPACPI_ACPIHANDLE_INIT(lght
);
4779 TPACPI_ACPIHANDLE_INIT(cmos
);
4780 INIT_WORK(&tpacpi_led_thinklight
.work
, light_set_status_worker
);
4782 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
4783 tp_features
.light
= (cmos_handle
|| lght_handle
) && !ledb_handle
;
4785 if (tp_features
.light
)
4786 /* light status not supported on
4787 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
4788 tp_features
.light_status
=
4789 acpi_evalf(ec_handle
, NULL
, "KBLT", "qv");
4791 vdbg_printk(TPACPI_DBG_INIT
, "light is %s, light status is %s\n",
4792 str_supported(tp_features
.light
),
4793 str_supported(tp_features
.light_status
));
4795 if (!tp_features
.light
)
4798 rc
= led_classdev_register(&tpacpi_pdev
->dev
,
4799 &tpacpi_led_thinklight
.led_classdev
);
4802 tp_features
.light
= 0;
4803 tp_features
.light_status
= 0;
4811 static void light_exit(void)
4813 led_classdev_unregister(&tpacpi_led_thinklight
.led_classdev
);
4814 if (work_pending(&tpacpi_led_thinklight
.work
))
4815 flush_workqueue(tpacpi_wq
);
4818 static int light_read(char *p
)
4823 if (!tp_features
.light
) {
4824 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4825 } else if (!tp_features
.light_status
) {
4826 len
+= sprintf(p
+ len
, "status:\t\tunknown\n");
4827 len
+= sprintf(p
+ len
, "commands:\ton, off\n");
4829 status
= light_get_status();
4832 len
+= sprintf(p
+ len
, "status:\t\t%s\n", onoff(status
, 0));
4833 len
+= sprintf(p
+ len
, "commands:\ton, off\n");
4839 static int light_write(char *buf
)
4844 if (!tp_features
.light
)
4847 while ((cmd
= next_cmd(&buf
))) {
4848 if (strlencmp(cmd
, "on") == 0) {
4850 } else if (strlencmp(cmd
, "off") == 0) {
4856 return light_set_status(newstatus
);
4859 static struct ibm_struct light_driver_data
= {
4862 .write
= light_write
,
4866 /*************************************************************************
4870 /* sysfs cmos_command -------------------------------------------------- */
4871 static ssize_t
cmos_command_store(struct device
*dev
,
4872 struct device_attribute
*attr
,
4873 const char *buf
, size_t count
)
4875 unsigned long cmos_cmd
;
4878 if (parse_strtoul(buf
, 21, &cmos_cmd
))
4881 res
= issue_thinkpad_cmos_command(cmos_cmd
);
4882 return (res
)? res
: count
;
4885 static struct device_attribute dev_attr_cmos_command
=
4886 __ATTR(cmos_command
, S_IWUSR
, NULL
, cmos_command_store
);
4888 /* --------------------------------------------------------------------- */
4890 static int __init
cmos_init(struct ibm_init_struct
*iibm
)
4894 vdbg_printk(TPACPI_DBG_INIT
,
4895 "initializing cmos commands subdriver\n");
4897 TPACPI_ACPIHANDLE_INIT(cmos
);
4899 vdbg_printk(TPACPI_DBG_INIT
, "cmos commands are %s\n",
4900 str_supported(cmos_handle
!= NULL
));
4902 res
= device_create_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4906 return (cmos_handle
)? 0 : 1;
4909 static void cmos_exit(void)
4911 device_remove_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4914 static int cmos_read(char *p
)
4918 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4919 R30, R31, T20-22, X20-21 */
4921 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4923 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
4924 len
+= sprintf(p
+ len
, "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 (strlencmp(led_path
, "SLED") == 0)
5255 led_supported
= TPACPI_LED_570
;
5256 else if (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(char *p
)
5306 if (!led_supported
) {
5307 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
5310 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
5312 if (led_supported
== TPACPI_LED_570
) {
5315 for (i
= 0; i
< 8; i
++) {
5316 status
= led_get_status(i
);
5319 len
+= sprintf(p
+ len
, "%d:\t\t%s\n",
5320 i
, str_led_status(status
));
5324 len
+= sprintf(p
+ len
, "commands:\t"
5325 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
5330 static int led_write(char *buf
)
5334 enum led_status_t s
;
5339 while ((cmd
= next_cmd(&buf
))) {
5340 if (sscanf(cmd
, "%d", &led
) != 1 || led
< 0 || led
> 15)
5343 if (strstr(cmd
, "off")) {
5345 } else if (strstr(cmd
, "on")) {
5347 } else if (strstr(cmd
, "blink")) {
5348 s
= TPACPI_LED_BLINK
;
5353 rc
= led_set_status(led
, s
);
5361 static struct ibm_struct led_driver_data
= {
5368 /*************************************************************************
5372 TPACPI_HANDLE(beep
, ec
, "BEEP"); /* all except R30, R31 */
5374 #define TPACPI_BEEP_Q1 0x0001
5376 static const struct tpacpi_quirk beep_quirk_table
[] __initconst
= {
5377 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1
), /* 570 */
5378 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1
), /* 570E - unverified */
5381 static int __init
beep_init(struct ibm_init_struct
*iibm
)
5383 unsigned long quirks
;
5385 vdbg_printk(TPACPI_DBG_INIT
, "initializing beep subdriver\n");
5387 TPACPI_ACPIHANDLE_INIT(beep
);
5389 vdbg_printk(TPACPI_DBG_INIT
, "beep is %s\n",
5390 str_supported(beep_handle
!= NULL
));
5392 quirks
= tpacpi_check_quirks(beep_quirk_table
,
5393 ARRAY_SIZE(beep_quirk_table
));
5395 tp_features
.beep_needs_two_args
= !!(quirks
& TPACPI_BEEP_Q1
);
5397 return (beep_handle
)? 0 : 1;
5400 static int beep_read(char *p
)
5405 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
5407 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
5408 len
+= sprintf(p
+ len
, "commands:\t<cmd> (<cmd> is 0-17)\n");
5414 static int beep_write(char *buf
)
5422 while ((cmd
= next_cmd(&buf
))) {
5423 if (sscanf(cmd
, "%u", &beep_cmd
) == 1 &&
5424 beep_cmd
>= 0 && beep_cmd
<= 17) {
5428 if (tp_features
.beep_needs_two_args
) {
5429 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vdd",
5433 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vd",
5442 static struct ibm_struct beep_driver_data
= {
5445 .write
= beep_write
,
5448 /*************************************************************************
5452 enum thermal_access_mode
{
5453 TPACPI_THERMAL_NONE
= 0, /* No thermal support */
5454 TPACPI_THERMAL_ACPI_TMP07
, /* Use ACPI TMP0-7 */
5455 TPACPI_THERMAL_ACPI_UPDT
, /* Use ACPI TMP0-7 with UPDT */
5456 TPACPI_THERMAL_TPEC_8
, /* Use ACPI EC regs, 8 sensors */
5457 TPACPI_THERMAL_TPEC_16
, /* Use ACPI EC regs, 16 sensors */
5460 enum { /* TPACPI_THERMAL_TPEC_* */
5461 TP_EC_THERMAL_TMP0
= 0x78, /* ACPI EC regs TMP 0..7 */
5462 TP_EC_THERMAL_TMP8
= 0xC0, /* ACPI EC regs TMP 8..15 */
5463 TP_EC_THERMAL_TMP_NA
= -128, /* ACPI EC sensor not available */
5466 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5467 struct ibm_thermal_sensors_struct
{
5468 s32 temp
[TPACPI_MAX_THERMAL_SENSORS
];
5471 static enum thermal_access_mode thermal_read_mode
;
5473 /* idx is zero-based */
5474 static int thermal_get_sensor(int idx
, s32
*value
)
5480 t
= TP_EC_THERMAL_TMP0
;
5482 switch (thermal_read_mode
) {
5483 #if TPACPI_MAX_THERMAL_SENSORS >= 16
5484 case TPACPI_THERMAL_TPEC_16
:
5485 if (idx
>= 8 && idx
<= 15) {
5486 t
= TP_EC_THERMAL_TMP8
;
5491 case TPACPI_THERMAL_TPEC_8
:
5493 if (!acpi_ec_read(t
+ idx
, &tmp
))
5495 *value
= tmp
* 1000;
5500 case TPACPI_THERMAL_ACPI_UPDT
:
5502 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
5503 if (!acpi_evalf(ec_handle
, NULL
, "UPDT", "v"))
5505 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
5507 *value
= (t
- 2732) * 100;
5512 case TPACPI_THERMAL_ACPI_TMP07
:
5514 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
5515 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
5517 if (t
> 127 || t
< -127)
5518 t
= TP_EC_THERMAL_TMP_NA
;
5524 case TPACPI_THERMAL_NONE
:
5532 static int thermal_get_sensors(struct ibm_thermal_sensors_struct
*s
)
5543 if (thermal_read_mode
== TPACPI_THERMAL_TPEC_16
)
5546 for (i
= 0 ; i
< n
; i
++) {
5547 res
= thermal_get_sensor(i
, &s
->temp
[i
]);
5555 /* sysfs temp##_input -------------------------------------------------- */
5557 static ssize_t
thermal_temp_input_show(struct device
*dev
,
5558 struct device_attribute
*attr
,
5561 struct sensor_device_attribute
*sensor_attr
=
5562 to_sensor_dev_attr(attr
);
5563 int idx
= sensor_attr
->index
;
5567 res
= thermal_get_sensor(idx
, &value
);
5570 if (value
== TP_EC_THERMAL_TMP_NA
* 1000)
5573 return snprintf(buf
, PAGE_SIZE
, "%d\n", value
);
5576 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
5577 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5578 thermal_temp_input_show, NULL, _idxB)
5580 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input
[] = {
5581 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5582 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5583 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5584 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5585 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5586 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5587 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5588 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5589 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5590 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5591 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5592 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5593 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5594 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5595 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5596 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5599 #define THERMAL_ATTRS(X) \
5600 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5602 static struct attribute
*thermal_temp_input_attr
[] = {
5622 static const struct attribute_group thermal_temp_input16_group
= {
5623 .attrs
= thermal_temp_input_attr
5626 static const struct attribute_group thermal_temp_input8_group
= {
5627 .attrs
= &thermal_temp_input_attr
[8]
5630 #undef THERMAL_SENSOR_ATTR_TEMP
5631 #undef THERMAL_ATTRS
5633 /* --------------------------------------------------------------------- */
5635 static int __init
thermal_init(struct ibm_init_struct
*iibm
)
5642 vdbg_printk(TPACPI_DBG_INIT
, "initializing thermal subdriver\n");
5644 acpi_tmp7
= acpi_evalf(ec_handle
, NULL
, "TMP7", "qv");
5646 if (thinkpad_id
.ec_model
) {
5648 * Direct EC access mode: sensors at registers
5649 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5650 * non-implemented, thermal sensors return 0x80 when
5655 for (i
= 0; i
< 8; i
++) {
5656 if (acpi_ec_read(TP_EC_THERMAL_TMP0
+ i
, &t
)) {
5662 if (acpi_ec_read(TP_EC_THERMAL_TMP8
+ i
, &t
)) {
5670 /* This is sheer paranoia, but we handle it anyway */
5673 "ThinkPad ACPI EC access misbehaving, "
5674 "falling back to ACPI TMPx access "
5676 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5679 "ThinkPad ACPI EC access misbehaving, "
5680 "disabling thermal sensors access\n");
5681 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5686 TPACPI_THERMAL_TPEC_16
: TPACPI_THERMAL_TPEC_8
;
5688 } else if (acpi_tmp7
) {
5689 if (acpi_evalf(ec_handle
, NULL
, "UPDT", "qv")) {
5690 /* 600e/x, 770e, 770x */
5691 thermal_read_mode
= TPACPI_THERMAL_ACPI_UPDT
;
5693 /* Standard ACPI TMPx access, max 8 sensors */
5694 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5697 /* temperatures not supported on 570, G4x, R30, R31, R32 */
5698 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5701 vdbg_printk(TPACPI_DBG_INIT
, "thermal is %s, mode %d\n",
5702 str_supported(thermal_read_mode
!= TPACPI_THERMAL_NONE
),
5705 switch (thermal_read_mode
) {
5706 case TPACPI_THERMAL_TPEC_16
:
5707 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5708 &thermal_temp_input16_group
);
5712 case TPACPI_THERMAL_TPEC_8
:
5713 case TPACPI_THERMAL_ACPI_TMP07
:
5714 case TPACPI_THERMAL_ACPI_UPDT
:
5715 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5716 &thermal_temp_input8_group
);
5720 case TPACPI_THERMAL_NONE
:
5728 static void thermal_exit(void)
5730 switch (thermal_read_mode
) {
5731 case TPACPI_THERMAL_TPEC_16
:
5732 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5733 &thermal_temp_input16_group
);
5735 case TPACPI_THERMAL_TPEC_8
:
5736 case TPACPI_THERMAL_ACPI_TMP07
:
5737 case TPACPI_THERMAL_ACPI_UPDT
:
5738 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5739 &thermal_temp_input16_group
);
5741 case TPACPI_THERMAL_NONE
:
5747 static int thermal_read(char *p
)
5751 struct ibm_thermal_sensors_struct t
;
5753 n
= thermal_get_sensors(&t
);
5754 if (unlikely(n
< 0))
5757 len
+= sprintf(p
+ len
, "temperatures:\t");
5760 for (i
= 0; i
< (n
- 1); i
++)
5761 len
+= sprintf(p
+ len
, "%d ", t
.temp
[i
] / 1000);
5762 len
+= sprintf(p
+ len
, "%d\n", t
.temp
[i
] / 1000);
5764 len
+= sprintf(p
+ len
, "not supported\n");
5769 static struct ibm_struct thermal_driver_data
= {
5771 .read
= thermal_read
,
5772 .exit
= thermal_exit
,
5775 /*************************************************************************
5779 static u8 ecdump_regs
[256];
5781 static int ecdump_read(char *p
)
5787 len
+= sprintf(p
+ len
, "EC "
5788 " +00 +01 +02 +03 +04 +05 +06 +07"
5789 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5790 for (i
= 0; i
< 256; i
+= 16) {
5791 len
+= sprintf(p
+ len
, "EC 0x%02x:", i
);
5792 for (j
= 0; j
< 16; j
++) {
5793 if (!acpi_ec_read(i
+ j
, &v
))
5795 if (v
!= ecdump_regs
[i
+ j
])
5796 len
+= sprintf(p
+ len
, " *%02x", v
);
5798 len
+= sprintf(p
+ len
, " %02x", v
);
5799 ecdump_regs
[i
+ j
] = v
;
5801 len
+= sprintf(p
+ len
, "\n");
5806 /* These are way too dangerous to advertise openly... */
5808 len
+= sprintf(p
+ len
, "commands:\t0x<offset> 0x<value>"
5809 " (<offset> is 00-ff, <value> is 00-ff)\n");
5810 len
+= sprintf(p
+ len
, "commands:\t0x<offset> <value> "
5811 " (<offset> is 00-ff, <value> is 0-255)\n");
5816 static int ecdump_write(char *buf
)
5821 while ((cmd
= next_cmd(&buf
))) {
5822 if (sscanf(cmd
, "0x%x 0x%x", &i
, &v
) == 2) {
5824 } else if (sscanf(cmd
, "0x%x %u", &i
, &v
) == 2) {
5828 if (i
>= 0 && i
< 256 && v
>= 0 && v
< 256) {
5829 if (!acpi_ec_write(i
, v
))
5838 static struct ibm_struct ecdump_driver_data
= {
5840 .read
= ecdump_read
,
5841 .write
= ecdump_write
,
5842 .flags
.experimental
= 1,
5845 /*************************************************************************
5846 * Backlight/brightness subdriver
5849 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5852 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5853 * CMOS NVRAM byte 0x5E, bits 0-3.
5855 * EC HBRV (0x31) has the following layout
5856 * Bit 7: unknown function
5857 * Bit 6: unknown function
5858 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5859 * Bit 4: must be set to zero to avoid problems
5860 * Bit 3-0: backlight brightness level
5862 * brightness_get_raw returns status data in the HBRV layout
5864 * WARNING: The X61 has been verified to use HBRV for something else, so
5865 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
5866 * testing on the very early *60 Lenovo models...
5870 TP_EC_BACKLIGHT
= 0x31,
5872 /* TP_EC_BACKLIGHT bitmasks */
5873 TP_EC_BACKLIGHT_LVLMSK
= 0x1F,
5874 TP_EC_BACKLIGHT_CMDMSK
= 0xE0,
5875 TP_EC_BACKLIGHT_MAPSW
= 0x20,
5878 enum tpacpi_brightness_access_mode
{
5879 TPACPI_BRGHT_MODE_AUTO
= 0, /* Not implemented yet */
5880 TPACPI_BRGHT_MODE_EC
, /* EC control */
5881 TPACPI_BRGHT_MODE_UCMS_STEP
, /* UCMS step-based control */
5882 TPACPI_BRGHT_MODE_ECNVRAM
, /* EC control w/ NVRAM store */
5883 TPACPI_BRGHT_MODE_MAX
5886 static struct backlight_device
*ibm_backlight_device
;
5888 static enum tpacpi_brightness_access_mode brightness_mode
=
5889 TPACPI_BRGHT_MODE_MAX
;
5891 static unsigned int brightness_enable
= 2; /* 2 = auto, 0 = no, 1 = yes */
5893 static struct mutex brightness_mutex
;
5895 /* NVRAM brightness access,
5896 * call with brightness_mutex held! */
5897 static unsigned int tpacpi_brightness_nvram_get(void)
5901 lnvram
= (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
)
5902 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
5903 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
5904 lnvram
&= (tp_features
.bright_16levels
) ? 0x0f : 0x07;
5909 static void tpacpi_brightness_checkpoint_nvram(void)
5914 if (brightness_mode
!= TPACPI_BRGHT_MODE_ECNVRAM
)
5917 vdbg_printk(TPACPI_DBG_BRGHT
,
5918 "trying to checkpoint backlight level to NVRAM...\n");
5920 if (mutex_lock_killable(&brightness_mutex
) < 0)
5923 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
5925 lec
&= TP_EC_BACKLIGHT_LVLMSK
;
5926 b_nvram
= nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
);
5928 if (lec
!= ((b_nvram
& TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
5929 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
)) {
5930 /* NVRAM needs update */
5931 b_nvram
&= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS
<<
5932 TP_NVRAM_POS_LEVEL_BRIGHTNESS
);
5934 nvram_write_byte(b_nvram
, TP_NVRAM_ADDR_BRIGHTNESS
);
5935 dbg_printk(TPACPI_DBG_BRGHT
,
5936 "updated NVRAM backlight level to %u (0x%02x)\n",
5937 (unsigned int) lec
, (unsigned int) b_nvram
);
5939 vdbg_printk(TPACPI_DBG_BRGHT
,
5940 "NVRAM backlight level already is %u (0x%02x)\n",
5941 (unsigned int) lec
, (unsigned int) b_nvram
);
5944 mutex_unlock(&brightness_mutex
);
5948 /* call with brightness_mutex held! */
5949 static int tpacpi_brightness_get_raw(int *status
)
5953 switch (brightness_mode
) {
5954 case TPACPI_BRGHT_MODE_UCMS_STEP
:
5955 *status
= tpacpi_brightness_nvram_get();
5957 case TPACPI_BRGHT_MODE_EC
:
5958 case TPACPI_BRGHT_MODE_ECNVRAM
:
5959 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
5968 /* call with brightness_mutex held! */
5969 /* do NOT call with illegal backlight level value */
5970 static int tpacpi_brightness_set_ec(unsigned int value
)
5974 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
5977 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT
,
5978 (lec
& TP_EC_BACKLIGHT_CMDMSK
) |
5979 (value
& TP_EC_BACKLIGHT_LVLMSK
))))
5985 /* call with brightness_mutex held! */
5986 static int tpacpi_brightness_set_ucmsstep(unsigned int value
)
5989 unsigned int current_value
, i
;
5991 current_value
= tpacpi_brightness_nvram_get();
5993 if (value
== current_value
)
5996 cmos_cmd
= (value
> current_value
) ?
5997 TP_CMOS_BRIGHTNESS_UP
:
5998 TP_CMOS_BRIGHTNESS_DOWN
;
5999 inc
= (value
> current_value
) ? 1 : -1;
6001 for (i
= current_value
; i
!= value
; i
+= inc
)
6002 if (issue_thinkpad_cmos_command(cmos_cmd
))
6008 /* May return EINTR which can always be mapped to ERESTARTSYS */
6009 static int brightness_set(unsigned int value
)
6013 if (value
> ((tp_features
.bright_16levels
)? 15 : 7) ||
6017 vdbg_printk(TPACPI_DBG_BRGHT
,
6018 "set backlight level to %d\n", value
);
6020 res
= mutex_lock_killable(&brightness_mutex
);
6024 switch (brightness_mode
) {
6025 case TPACPI_BRGHT_MODE_EC
:
6026 case TPACPI_BRGHT_MODE_ECNVRAM
:
6027 res
= tpacpi_brightness_set_ec(value
);
6029 case TPACPI_BRGHT_MODE_UCMS_STEP
:
6030 res
= tpacpi_brightness_set_ucmsstep(value
);
6036 mutex_unlock(&brightness_mutex
);
6040 /* sysfs backlight class ----------------------------------------------- */
6042 static int brightness_update_status(struct backlight_device
*bd
)
6044 unsigned int level
=
6045 (bd
->props
.fb_blank
== FB_BLANK_UNBLANK
&&
6046 bd
->props
.power
== FB_BLANK_UNBLANK
) ?
6047 bd
->props
.brightness
: 0;
6049 dbg_printk(TPACPI_DBG_BRGHT
,
6050 "backlight: attempt to set level to %d\n",
6053 /* it is the backlight class's job (caller) to handle
6054 * EINTR and other errors properly */
6055 return brightness_set(level
);
6058 static int brightness_get(struct backlight_device
*bd
)
6062 res
= mutex_lock_killable(&brightness_mutex
);
6066 res
= tpacpi_brightness_get_raw(&status
);
6068 mutex_unlock(&brightness_mutex
);
6073 return status
& TP_EC_BACKLIGHT_LVLMSK
;
6076 static struct backlight_ops ibm_backlight_data
= {
6077 .get_brightness
= brightness_get
,
6078 .update_status
= brightness_update_status
,
6081 /* --------------------------------------------------------------------- */
6084 * These are only useful for models that have only one possibility
6085 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6088 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6089 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6090 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6092 static const struct tpacpi_quirk brightness_quirk_table
[] __initconst
= {
6093 /* Models with ATI GPUs known to require ECNVRAM mode */
6094 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC
), /* T43/p ATI */
6096 /* Models with ATI GPUs that can use ECNVRAM */
6097 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC
),
6098 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6099 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6100 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6102 /* Models with Intel Extreme Graphics 2 */
6103 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC
),
6104 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6105 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6107 /* Models with Intel GMA900 */
6108 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC
), /* T43, R52 */
6109 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC
), /* X41 */
6110 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC
), /* X41 Tablet */
6113 static int __init
brightness_init(struct ibm_init_struct
*iibm
)
6116 unsigned long quirks
;
6118 vdbg_printk(TPACPI_DBG_INIT
, "initializing brightness subdriver\n");
6120 mutex_init(&brightness_mutex
);
6122 quirks
= tpacpi_check_quirks(brightness_quirk_table
,
6123 ARRAY_SIZE(brightness_quirk_table
));
6126 * We always attempt to detect acpi support, so as to switch
6127 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6128 * going to publish a backlight interface
6130 b
= tpacpi_check_std_acpi_brightness_support();
6133 if (acpi_video_backlight_support()) {
6134 if (brightness_enable
> 1) {
6135 printk(TPACPI_NOTICE
6136 "Standard ACPI backlight interface "
6137 "available, not loading native one.\n");
6139 } else if (brightness_enable
== 1) {
6140 printk(TPACPI_NOTICE
6141 "Backlight control force enabled, even if standard "
6142 "ACPI backlight interface is available\n");
6145 if (brightness_enable
> 1) {
6146 printk(TPACPI_NOTICE
6147 "Standard ACPI backlight interface not "
6148 "available, thinkpad_acpi native "
6149 "brightness control enabled\n");
6154 if (!brightness_enable
) {
6155 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_BRGHT
,
6156 "brightness support disabled by "
6157 "module parameter\n");
6163 "Unsupported brightness interface, "
6164 "please contact %s\n", TPACPI_MAIL
);
6168 tp_features
.bright_16levels
= 1;
6171 * Check for module parameter bogosity, note that we
6172 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6173 * able to detect "unspecified"
6175 if (brightness_mode
> TPACPI_BRGHT_MODE_MAX
)
6178 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6179 if (brightness_mode
== TPACPI_BRGHT_MODE_AUTO
||
6180 brightness_mode
== TPACPI_BRGHT_MODE_MAX
) {
6181 if (quirks
& TPACPI_BRGHT_Q_EC
)
6182 brightness_mode
= TPACPI_BRGHT_MODE_ECNVRAM
;
6184 brightness_mode
= TPACPI_BRGHT_MODE_UCMS_STEP
;
6186 dbg_printk(TPACPI_DBG_BRGHT
,
6187 "driver auto-selected brightness_mode=%d\n",
6192 if (thinkpad_id
.vendor
!= PCI_VENDOR_ID_IBM
&&
6193 (brightness_mode
== TPACPI_BRGHT_MODE_ECNVRAM
||
6194 brightness_mode
== TPACPI_BRGHT_MODE_EC
))
6197 if (tpacpi_brightness_get_raw(&b
) < 0)
6200 if (tp_features
.bright_16levels
)
6202 "detected a 16-level brightness capable ThinkPad\n");
6204 ibm_backlight_device
= backlight_device_register(
6205 TPACPI_BACKLIGHT_DEV_NAME
, NULL
, NULL
,
6206 &ibm_backlight_data
);
6207 if (IS_ERR(ibm_backlight_device
)) {
6208 int rc
= PTR_ERR(ibm_backlight_device
);
6209 ibm_backlight_device
= NULL
;
6210 printk(TPACPI_ERR
"Could not register backlight device\n");
6213 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_BRGHT
,
6214 "brightness is supported\n");
6216 if (quirks
& TPACPI_BRGHT_Q_ASK
) {
6217 printk(TPACPI_NOTICE
6218 "brightness: will use unverified default: "
6219 "brightness_mode=%d\n", brightness_mode
);
6220 printk(TPACPI_NOTICE
6221 "brightness: please report to %s whether it works well "
6222 "or not on your ThinkPad\n", TPACPI_MAIL
);
6225 ibm_backlight_device
->props
.max_brightness
=
6226 (tp_features
.bright_16levels
)? 15 : 7;
6227 ibm_backlight_device
->props
.brightness
= b
& TP_EC_BACKLIGHT_LVLMSK
;
6228 backlight_update_status(ibm_backlight_device
);
6233 static void brightness_suspend(pm_message_t state
)
6235 tpacpi_brightness_checkpoint_nvram();
6238 static void brightness_shutdown(void)
6240 tpacpi_brightness_checkpoint_nvram();
6243 static void brightness_exit(void)
6245 if (ibm_backlight_device
) {
6246 vdbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_BRGHT
,
6247 "calling backlight_device_unregister()\n");
6248 backlight_device_unregister(ibm_backlight_device
);
6251 tpacpi_brightness_checkpoint_nvram();
6254 static int brightness_read(char *p
)
6259 level
= brightness_get(NULL
);
6261 len
+= sprintf(p
+ len
, "level:\t\tunreadable\n");
6263 len
+= sprintf(p
+ len
, "level:\t\t%d\n", level
);
6264 len
+= sprintf(p
+ len
, "commands:\tup, down\n");
6265 len
+= sprintf(p
+ len
, "commands:\tlevel <level>"
6266 " (<level> is 0-%d)\n",
6267 (tp_features
.bright_16levels
) ? 15 : 7);
6273 static int brightness_write(char *buf
)
6278 int max_level
= (tp_features
.bright_16levels
) ? 15 : 7;
6280 level
= brightness_get(NULL
);
6284 while ((cmd
= next_cmd(&buf
))) {
6285 if (strlencmp(cmd
, "up") == 0) {
6286 if (level
< max_level
)
6288 } else if (strlencmp(cmd
, "down") == 0) {
6291 } else if (sscanf(cmd
, "level %d", &level
) == 1 &&
6292 level
>= 0 && level
<= max_level
) {
6298 tpacpi_disclose_usertask("procfs brightness",
6299 "set level to %d\n", level
);
6302 * Now we know what the final level should be, so we try to set it.
6303 * Doing it this way makes the syscall restartable in case of EINTR
6305 rc
= brightness_set(level
);
6306 return (rc
== -EINTR
)? -ERESTARTSYS
: rc
;
6309 static struct ibm_struct brightness_driver_data
= {
6310 .name
= "brightness",
6311 .read
= brightness_read
,
6312 .write
= brightness_write
,
6313 .exit
= brightness_exit
,
6314 .suspend
= brightness_suspend
,
6315 .shutdown
= brightness_shutdown
,
6318 /*************************************************************************
6322 static int volume_offset
= 0x30;
6324 static int volume_read(char *p
)
6329 if (!acpi_ec_read(volume_offset
, &level
)) {
6330 len
+= sprintf(p
+ len
, "level:\t\tunreadable\n");
6332 len
+= sprintf(p
+ len
, "level:\t\t%d\n", level
& 0xf);
6333 len
+= sprintf(p
+ len
, "mute:\t\t%s\n", onoff(level
, 6));
6334 len
+= sprintf(p
+ len
, "commands:\tup, down, mute\n");
6335 len
+= sprintf(p
+ len
, "commands:\tlevel <level>"
6336 " (<level> is 0-15)\n");
6342 static int volume_write(char *buf
)
6344 int cmos_cmd
, inc
, i
;
6346 int new_level
, new_mute
;
6349 while ((cmd
= next_cmd(&buf
))) {
6350 if (!acpi_ec_read(volume_offset
, &level
))
6352 new_mute
= mute
= level
& 0x40;
6353 new_level
= level
= level
& 0xf;
6355 if (strlencmp(cmd
, "up") == 0) {
6359 new_level
= level
== 15 ? 15 : level
+ 1;
6360 } else if (strlencmp(cmd
, "down") == 0) {
6364 new_level
= level
== 0 ? 0 : level
- 1;
6365 } else if (sscanf(cmd
, "level %d", &new_level
) == 1 &&
6366 new_level
>= 0 && new_level
<= 15) {
6368 } else if (strlencmp(cmd
, "mute") == 0) {
6373 if (new_level
!= level
) {
6374 /* mute doesn't change */
6376 cmos_cmd
= (new_level
> level
) ?
6377 TP_CMOS_VOLUME_UP
: TP_CMOS_VOLUME_DOWN
;
6378 inc
= new_level
> level
? 1 : -1;
6380 if (mute
&& (issue_thinkpad_cmos_command(cmos_cmd
) ||
6381 !acpi_ec_write(volume_offset
, level
)))
6384 for (i
= level
; i
!= new_level
; i
+= inc
)
6385 if (issue_thinkpad_cmos_command(cmos_cmd
) ||
6386 !acpi_ec_write(volume_offset
, i
+ inc
))
6390 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE
) ||
6391 !acpi_ec_write(volume_offset
, new_level
+ mute
))) {
6396 if (new_mute
!= mute
) {
6397 /* level doesn't change */
6399 cmos_cmd
= (new_mute
) ?
6400 TP_CMOS_VOLUME_MUTE
: TP_CMOS_VOLUME_UP
;
6402 if (issue_thinkpad_cmos_command(cmos_cmd
) ||
6403 !acpi_ec_write(volume_offset
, level
+ new_mute
))
6411 static struct ibm_struct volume_driver_data
= {
6413 .read
= volume_read
,
6414 .write
= volume_write
,
6417 /*************************************************************************
6424 * TPACPI_FAN_RD_ACPI_GFAN:
6425 * ACPI GFAN method: returns fan level
6427 * see TPACPI_FAN_WR_ACPI_SFAN
6428 * EC 0x2f (HFSP) not available if GFAN exists
6430 * TPACPI_FAN_WR_ACPI_SFAN:
6431 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
6433 * EC 0x2f (HFSP) might be available *for reading*, but do not use
6436 * TPACPI_FAN_WR_TPEC:
6437 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
6438 * Supported on almost all ThinkPads
6440 * Fan speed changes of any sort (including those caused by the
6441 * disengaged mode) are usually done slowly by the firmware as the
6442 * maximum ammount of fan duty cycle change per second seems to be
6445 * Reading is not available if GFAN exists.
6446 * Writing is not available if SFAN exists.
6449 * 7 automatic mode engaged;
6450 * (default operation mode of the ThinkPad)
6451 * fan level is ignored in this mode.
6452 * 6 full speed mode (takes precedence over bit 7);
6453 * not available on all thinkpads. May disable
6454 * the tachometer while the fan controller ramps up
6455 * the speed (which can take up to a few *minutes*).
6456 * Speeds up fan to 100% duty-cycle, which is far above
6457 * the standard RPM levels. It is not impossible that
6458 * it could cause hardware damage.
6459 * 5-3 unused in some models. Extra bits for fan level
6460 * in others, but still useless as all values above
6461 * 7 map to the same speed as level 7 in these models.
6462 * 2-0 fan level (0..7 usually)
6464 * 0x07 = max (set when temperatures critical)
6465 * Some ThinkPads may have other levels, see
6466 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
6468 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
6469 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
6470 * does so, its initial value is meaningless (0x07).
6472 * For firmware bugs, refer to:
6473 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6477 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
6478 * Main fan tachometer reading (in RPM)
6480 * This register is present on all ThinkPads with a new-style EC, and
6481 * it is known not to be present on the A21m/e, and T22, as there is
6482 * something else in offset 0x84 according to the ACPI DSDT. Other
6483 * ThinkPads from this same time period (and earlier) probably lack the
6484 * tachometer as well.
6486 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
6487 * was never fixed by IBM to report the EC firmware version string
6488 * probably support the tachometer (like the early X models), so
6489 * detecting it is quite hard. We need more data to know for sure.
6491 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
6494 * FIRMWARE BUG: may go stale while the EC is switching to full speed
6497 * For firmware bugs, refer to:
6498 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6502 * ThinkPad EC register 0x31 bit 0 (only on select models)
6504 * When bit 0 of EC register 0x31 is zero, the tachometer registers
6505 * show the speed of the main fan. When bit 0 of EC register 0x31
6506 * is one, the tachometer registers show the speed of the auxiliary
6509 * Fan control seems to affect both fans, regardless of the state
6512 * So far, only the firmware for the X60/X61 non-tablet versions
6513 * seem to support this (firmware TP-7M).
6515 * TPACPI_FAN_WR_ACPI_FANS:
6516 * ThinkPad X31, X40, X41. Not available in the X60.
6518 * FANS ACPI handle: takes three arguments: low speed, medium speed,
6519 * high speed. ACPI DSDT seems to map these three speeds to levels
6520 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
6521 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
6523 * The speeds are stored on handles
6524 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
6526 * There are three default speed sets, acessible as handles:
6527 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
6529 * ACPI DSDT switches which set is in use depending on various
6532 * TPACPI_FAN_WR_TPEC is also available and should be used to
6533 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
6534 * but the ACPI tables just mention level 7.
6537 enum { /* Fan control constants */
6538 fan_status_offset
= 0x2f, /* EC register 0x2f */
6539 fan_rpm_offset
= 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
6540 * 0x84 must be read before 0x85 */
6541 fan_select_offset
= 0x31, /* EC register 0x31 (Firmware 7M)
6542 bit 0 selects which fan is active */
6544 TP_EC_FAN_FULLSPEED
= 0x40, /* EC fan mode: full speed */
6545 TP_EC_FAN_AUTO
= 0x80, /* EC fan mode: auto fan control */
6547 TPACPI_FAN_LAST_LEVEL
= 0x100, /* Use cached last-seen fan level */
6550 enum fan_status_access_mode
{
6551 TPACPI_FAN_NONE
= 0, /* No fan status or control */
6552 TPACPI_FAN_RD_ACPI_GFAN
, /* Use ACPI GFAN */
6553 TPACPI_FAN_RD_TPEC
, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
6556 enum fan_control_access_mode
{
6557 TPACPI_FAN_WR_NONE
= 0, /* No fan control */
6558 TPACPI_FAN_WR_ACPI_SFAN
, /* Use ACPI SFAN */
6559 TPACPI_FAN_WR_TPEC
, /* Use ACPI EC reg 0x2f */
6560 TPACPI_FAN_WR_ACPI_FANS
, /* Use ACPI FANS and EC reg 0x2f */
6563 enum fan_control_commands
{
6564 TPACPI_FAN_CMD_SPEED
= 0x0001, /* speed command */
6565 TPACPI_FAN_CMD_LEVEL
= 0x0002, /* level command */
6566 TPACPI_FAN_CMD_ENABLE
= 0x0004, /* enable/disable cmd,
6567 * and also watchdog cmd */
6570 static int fan_control_allowed
;
6572 static enum fan_status_access_mode fan_status_access_mode
;
6573 static enum fan_control_access_mode fan_control_access_mode
;
6574 static enum fan_control_commands fan_control_commands
;
6576 static u8 fan_control_initial_status
;
6577 static u8 fan_control_desired_level
;
6578 static u8 fan_control_resume_level
;
6579 static int fan_watchdog_maxinterval
;
6581 static struct mutex fan_mutex
;
6583 static void fan_watchdog_fire(struct work_struct
*ignored
);
6584 static DECLARE_DELAYED_WORK(fan_watchdog_task
, fan_watchdog_fire
);
6586 TPACPI_HANDLE(fans
, ec
, "FANS"); /* X31, X40, X41 */
6587 TPACPI_HANDLE(gfan
, ec
, "GFAN", /* 570 */
6588 "\\FSPD", /* 600e/x, 770e, 770x */
6590 TPACPI_HANDLE(sfan
, ec
, "SFAN", /* 570 */
6591 "JFNS", /* 770x-JL */
6595 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
6596 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
6597 * be in auto mode (0x80).
6599 * This is corrected by any write to HFSP either by the driver, or
6602 * We assume 0x07 really means auto mode while this quirk is active,
6603 * as this is far more likely than the ThinkPad being in level 7,
6604 * which is only used by the firmware during thermal emergencies.
6606 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
6607 * TP-70 (T43, R52), which are known to be buggy.
6610 static void fan_quirk1_setup(void)
6612 if (fan_control_initial_status
== 0x07) {
6613 printk(TPACPI_NOTICE
6614 "fan_init: initial fan status is unknown, "
6615 "assuming it is in auto mode\n");
6616 tp_features
.fan_ctrl_status_undef
= 1;
6620 static void fan_quirk1_handle(u8
*fan_status
)
6622 if (unlikely(tp_features
.fan_ctrl_status_undef
)) {
6623 if (*fan_status
!= fan_control_initial_status
) {
6624 /* something changed the HFSP regisnter since
6625 * driver init time, so it is not undefined
6627 tp_features
.fan_ctrl_status_undef
= 0;
6629 /* Return most likely status. In fact, it
6630 * might be the only possible status */
6631 *fan_status
= TP_EC_FAN_AUTO
;
6636 /* Select main fan on X60/X61, NOOP on others */
6637 static bool fan_select_fan1(void)
6639 if (tp_features
.second_fan
) {
6642 if (ec_read(fan_select_offset
, &val
) < 0)
6645 if (ec_write(fan_select_offset
, val
) < 0)
6651 /* Select secondary fan on X60/X61 */
6652 static bool fan_select_fan2(void)
6656 if (!tp_features
.second_fan
)
6659 if (ec_read(fan_select_offset
, &val
) < 0)
6662 if (ec_write(fan_select_offset
, val
) < 0)
6669 * Call with fan_mutex held
6671 static void fan_update_desired_level(u8 status
)
6674 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
6676 fan_control_desired_level
= 7;
6678 fan_control_desired_level
= status
;
6682 static int fan_get_status(u8
*status
)
6687 * Add TPACPI_FAN_RD_ACPI_FANS ? */
6689 switch (fan_status_access_mode
) {
6690 case TPACPI_FAN_RD_ACPI_GFAN
:
6691 /* 570, 600e/x, 770e, 770x */
6693 if (unlikely(!acpi_evalf(gfan_handle
, &s
, NULL
, "d")))
6701 case TPACPI_FAN_RD_TPEC
:
6702 /* all except 570, 600e/x, 770e, 770x */
6703 if (unlikely(!acpi_ec_read(fan_status_offset
, &s
)))
6706 if (likely(status
)) {
6708 fan_quirk1_handle(status
);
6720 static int fan_get_status_safe(u8
*status
)
6725 if (mutex_lock_killable(&fan_mutex
))
6726 return -ERESTARTSYS
;
6727 rc
= fan_get_status(&s
);
6729 fan_update_desired_level(s
);
6730 mutex_unlock(&fan_mutex
);
6738 static int fan_get_speed(unsigned int *speed
)
6742 switch (fan_status_access_mode
) {
6743 case TPACPI_FAN_RD_TPEC
:
6744 /* all except 570, 600e/x, 770e, 770x */
6745 if (unlikely(!fan_select_fan1()))
6747 if (unlikely(!acpi_ec_read(fan_rpm_offset
, &lo
) ||
6748 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
)))
6752 *speed
= (hi
<< 8) | lo
;
6763 static int fan2_get_speed(unsigned int *speed
)
6768 switch (fan_status_access_mode
) {
6769 case TPACPI_FAN_RD_TPEC
:
6770 /* all except 570, 600e/x, 770e, 770x */
6771 if (unlikely(!fan_select_fan2()))
6773 rc
= !acpi_ec_read(fan_rpm_offset
, &lo
) ||
6774 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
);
6775 fan_select_fan1(); /* play it safe */
6780 *speed
= (hi
<< 8) | lo
;
6791 static int fan_set_level(int level
)
6793 if (!fan_control_allowed
)
6796 switch (fan_control_access_mode
) {
6797 case TPACPI_FAN_WR_ACPI_SFAN
:
6798 if (level
>= 0 && level
<= 7) {
6799 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", level
))
6805 case TPACPI_FAN_WR_ACPI_FANS
:
6806 case TPACPI_FAN_WR_TPEC
:
6807 if (!(level
& TP_EC_FAN_AUTO
) &&
6808 !(level
& TP_EC_FAN_FULLSPEED
) &&
6809 ((level
< 0) || (level
> 7)))
6812 /* safety net should the EC not support AUTO
6813 * or FULLSPEED mode bits and just ignore them */
6814 if (level
& TP_EC_FAN_FULLSPEED
)
6815 level
|= 7; /* safety min speed 7 */
6816 else if (level
& TP_EC_FAN_AUTO
)
6817 level
|= 4; /* safety min speed 4 */
6819 if (!acpi_ec_write(fan_status_offset
, level
))
6822 tp_features
.fan_ctrl_status_undef
= 0;
6829 vdbg_printk(TPACPI_DBG_FAN
,
6830 "fan control: set fan control register to 0x%02x\n", level
);
6834 static int fan_set_level_safe(int level
)
6838 if (!fan_control_allowed
)
6841 if (mutex_lock_killable(&fan_mutex
))
6842 return -ERESTARTSYS
;
6844 if (level
== TPACPI_FAN_LAST_LEVEL
)
6845 level
= fan_control_desired_level
;
6847 rc
= fan_set_level(level
);
6849 fan_update_desired_level(level
);
6851 mutex_unlock(&fan_mutex
);
6855 static int fan_set_enable(void)
6860 if (!fan_control_allowed
)
6863 if (mutex_lock_killable(&fan_mutex
))
6864 return -ERESTARTSYS
;
6866 switch (fan_control_access_mode
) {
6867 case TPACPI_FAN_WR_ACPI_FANS
:
6868 case TPACPI_FAN_WR_TPEC
:
6869 rc
= fan_get_status(&s
);
6873 /* Don't go out of emergency fan mode */
6876 s
|= TP_EC_FAN_AUTO
| 4; /* min fan speed 4 */
6879 if (!acpi_ec_write(fan_status_offset
, s
))
6882 tp_features
.fan_ctrl_status_undef
= 0;
6887 case TPACPI_FAN_WR_ACPI_SFAN
:
6888 rc
= fan_get_status(&s
);
6894 /* Set fan to at least level 4 */
6897 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", s
))
6907 mutex_unlock(&fan_mutex
);
6910 vdbg_printk(TPACPI_DBG_FAN
,
6911 "fan control: set fan control register to 0x%02x\n",
6916 static int fan_set_disable(void)
6920 if (!fan_control_allowed
)
6923 if (mutex_lock_killable(&fan_mutex
))
6924 return -ERESTARTSYS
;
6927 switch (fan_control_access_mode
) {
6928 case TPACPI_FAN_WR_ACPI_FANS
:
6929 case TPACPI_FAN_WR_TPEC
:
6930 if (!acpi_ec_write(fan_status_offset
, 0x00))
6933 fan_control_desired_level
= 0;
6934 tp_features
.fan_ctrl_status_undef
= 0;
6938 case TPACPI_FAN_WR_ACPI_SFAN
:
6939 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", 0x00))
6942 fan_control_desired_level
= 0;
6950 vdbg_printk(TPACPI_DBG_FAN
,
6951 "fan control: set fan control register to 0\n");
6953 mutex_unlock(&fan_mutex
);
6957 static int fan_set_speed(int speed
)
6961 if (!fan_control_allowed
)
6964 if (mutex_lock_killable(&fan_mutex
))
6965 return -ERESTARTSYS
;
6968 switch (fan_control_access_mode
) {
6969 case TPACPI_FAN_WR_ACPI_FANS
:
6970 if (speed
>= 0 && speed
<= 65535) {
6971 if (!acpi_evalf(fans_handle
, NULL
, NULL
, "vddd",
6972 speed
, speed
, speed
))
6982 mutex_unlock(&fan_mutex
);
6986 static void fan_watchdog_reset(void)
6988 static int fan_watchdog_active
;
6990 if (fan_control_access_mode
== TPACPI_FAN_WR_NONE
)
6993 if (fan_watchdog_active
)
6994 cancel_delayed_work(&fan_watchdog_task
);
6996 if (fan_watchdog_maxinterval
> 0 &&
6997 tpacpi_lifecycle
!= TPACPI_LIFE_EXITING
) {
6998 fan_watchdog_active
= 1;
6999 if (!queue_delayed_work(tpacpi_wq
, &fan_watchdog_task
,
7000 msecs_to_jiffies(fan_watchdog_maxinterval
7003 "failed to queue the fan watchdog, "
7004 "watchdog will not trigger\n");
7007 fan_watchdog_active
= 0;
7010 static void fan_watchdog_fire(struct work_struct
*ignored
)
7014 if (tpacpi_lifecycle
!= TPACPI_LIFE_RUNNING
)
7017 printk(TPACPI_NOTICE
"fan watchdog: enabling fan\n");
7018 rc
= fan_set_enable();
7020 printk(TPACPI_ERR
"fan watchdog: error %d while enabling fan, "
7021 "will try again later...\n", -rc
);
7022 /* reschedule for later */
7023 fan_watchdog_reset();
7028 * SYSFS fan layout: hwmon compatible (device)
7031 * 0: "disengaged" mode
7033 * 2: native EC "auto" mode (recommended, hardware default)
7035 * pwm*: set speed in manual mode, ignored otherwise.
7036 * 0 is level 0; 255 is level 7. Intermediate points done with linear
7039 * fan*_input: tachometer reading, RPM
7042 * SYSFS fan layout: extensions
7044 * fan_watchdog (driver):
7045 * fan watchdog interval in seconds, 0 disables (default), max 120
7048 /* sysfs fan pwm1_enable ----------------------------------------------- */
7049 static ssize_t
fan_pwm1_enable_show(struct device
*dev
,
7050 struct device_attribute
*attr
,
7056 res
= fan_get_status_safe(&status
);
7060 if (status
& TP_EC_FAN_FULLSPEED
) {
7062 } else if (status
& TP_EC_FAN_AUTO
) {
7067 return snprintf(buf
, PAGE_SIZE
, "%d\n", mode
);
7070 static ssize_t
fan_pwm1_enable_store(struct device
*dev
,
7071 struct device_attribute
*attr
,
7072 const char *buf
, size_t count
)
7077 if (parse_strtoul(buf
, 2, &t
))
7080 tpacpi_disclose_usertask("hwmon pwm1_enable",
7081 "set fan mode to %lu\n", t
);
7085 level
= TP_EC_FAN_FULLSPEED
;
7088 level
= TPACPI_FAN_LAST_LEVEL
;
7091 level
= TP_EC_FAN_AUTO
;
7094 /* reserved for software-controlled auto mode */
7100 res
= fan_set_level_safe(level
);
7106 fan_watchdog_reset();
7111 static struct device_attribute dev_attr_fan_pwm1_enable
=
7112 __ATTR(pwm1_enable
, S_IWUSR
| S_IRUGO
,
7113 fan_pwm1_enable_show
, fan_pwm1_enable_store
);
7115 /* sysfs fan pwm1 ------------------------------------------------------ */
7116 static ssize_t
fan_pwm1_show(struct device
*dev
,
7117 struct device_attribute
*attr
,
7123 res
= fan_get_status_safe(&status
);
7128 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) != 0)
7129 status
= fan_control_desired_level
;
7134 return snprintf(buf
, PAGE_SIZE
, "%u\n", (status
* 255) / 7);
7137 static ssize_t
fan_pwm1_store(struct device
*dev
,
7138 struct device_attribute
*attr
,
7139 const char *buf
, size_t count
)
7143 u8 status
, newlevel
;
7145 if (parse_strtoul(buf
, 255, &s
))
7148 tpacpi_disclose_usertask("hwmon pwm1",
7149 "set fan speed to %lu\n", s
);
7151 /* scale down from 0-255 to 0-7 */
7152 newlevel
= (s
>> 5) & 0x07;
7154 if (mutex_lock_killable(&fan_mutex
))
7155 return -ERESTARTSYS
;
7157 rc
= fan_get_status(&status
);
7158 if (!rc
&& (status
&
7159 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
7160 rc
= fan_set_level(newlevel
);
7164 fan_update_desired_level(newlevel
);
7165 fan_watchdog_reset();
7169 mutex_unlock(&fan_mutex
);
7170 return (rc
)? rc
: count
;
7173 static struct device_attribute dev_attr_fan_pwm1
=
7174 __ATTR(pwm1
, S_IWUSR
| S_IRUGO
,
7175 fan_pwm1_show
, fan_pwm1_store
);
7177 /* sysfs fan fan1_input ------------------------------------------------ */
7178 static ssize_t
fan_fan1_input_show(struct device
*dev
,
7179 struct device_attribute
*attr
,
7185 res
= fan_get_speed(&speed
);
7189 return snprintf(buf
, PAGE_SIZE
, "%u\n", speed
);
7192 static struct device_attribute dev_attr_fan_fan1_input
=
7193 __ATTR(fan1_input
, S_IRUGO
,
7194 fan_fan1_input_show
, NULL
);
7196 /* sysfs fan fan2_input ------------------------------------------------ */
7197 static ssize_t
fan_fan2_input_show(struct device
*dev
,
7198 struct device_attribute
*attr
,
7204 res
= fan2_get_speed(&speed
);
7208 return snprintf(buf
, PAGE_SIZE
, "%u\n", speed
);
7211 static struct device_attribute dev_attr_fan_fan2_input
=
7212 __ATTR(fan2_input
, S_IRUGO
,
7213 fan_fan2_input_show
, NULL
);
7215 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
7216 static ssize_t
fan_fan_watchdog_show(struct device_driver
*drv
,
7219 return snprintf(buf
, PAGE_SIZE
, "%u\n", fan_watchdog_maxinterval
);
7222 static ssize_t
fan_fan_watchdog_store(struct device_driver
*drv
,
7223 const char *buf
, size_t count
)
7227 if (parse_strtoul(buf
, 120, &t
))
7230 if (!fan_control_allowed
)
7233 fan_watchdog_maxinterval
= t
;
7234 fan_watchdog_reset();
7236 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t
);
7241 static DRIVER_ATTR(fan_watchdog
, S_IWUSR
| S_IRUGO
,
7242 fan_fan_watchdog_show
, fan_fan_watchdog_store
);
7244 /* --------------------------------------------------------------------- */
7245 static struct attribute
*fan_attributes
[] = {
7246 &dev_attr_fan_pwm1_enable
.attr
, &dev_attr_fan_pwm1
.attr
,
7247 &dev_attr_fan_fan1_input
.attr
,
7248 NULL
, /* for fan2_input */
7252 static const struct attribute_group fan_attr_group
= {
7253 .attrs
= fan_attributes
,
7256 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
7257 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7259 #define TPACPI_FAN_QI(__id1, __id2, __quirks) \
7260 { .vendor = PCI_VENDOR_ID_IBM, \
7261 .bios = TPACPI_MATCH_ANY, \
7262 .ec = TPID(__id1, __id2), \
7263 .quirks = __quirks }
7265 #define TPACPI_FAN_QL(__id1, __id2, __quirks) \
7266 { .vendor = PCI_VENDOR_ID_LENOVO, \
7267 .bios = TPACPI_MATCH_ANY, \
7268 .ec = TPID(__id1, __id2), \
7269 .quirks = __quirks }
7271 static const struct tpacpi_quirk fan_quirk_table
[] __initconst
= {
7272 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1
),
7273 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1
),
7274 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1
),
7275 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1
),
7276 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN
),
7279 #undef TPACPI_FAN_QL
7280 #undef TPACPI_FAN_QI
7282 static int __init
fan_init(struct ibm_init_struct
*iibm
)
7285 unsigned long quirks
;
7287 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
7288 "initializing fan subdriver\n");
7290 mutex_init(&fan_mutex
);
7291 fan_status_access_mode
= TPACPI_FAN_NONE
;
7292 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
7293 fan_control_commands
= 0;
7294 fan_watchdog_maxinterval
= 0;
7295 tp_features
.fan_ctrl_status_undef
= 0;
7296 tp_features
.second_fan
= 0;
7297 fan_control_desired_level
= 7;
7299 TPACPI_ACPIHANDLE_INIT(fans
);
7300 TPACPI_ACPIHANDLE_INIT(gfan
);
7301 TPACPI_ACPIHANDLE_INIT(sfan
);
7303 quirks
= tpacpi_check_quirks(fan_quirk_table
,
7304 ARRAY_SIZE(fan_quirk_table
));
7307 /* 570, 600e/x, 770e, 770x */
7308 fan_status_access_mode
= TPACPI_FAN_RD_ACPI_GFAN
;
7310 /* all other ThinkPads: note that even old-style
7311 * ThinkPad ECs supports the fan control register */
7312 if (likely(acpi_ec_read(fan_status_offset
,
7313 &fan_control_initial_status
))) {
7314 fan_status_access_mode
= TPACPI_FAN_RD_TPEC
;
7315 if (quirks
& TPACPI_FAN_Q1
)
7317 if (quirks
& TPACPI_FAN_2FAN
) {
7318 tp_features
.second_fan
= 1;
7319 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
7320 "secondary fan support enabled\n");
7324 "ThinkPad ACPI EC access misbehaving, "
7325 "fan status and control unavailable\n");
7332 fan_control_access_mode
= TPACPI_FAN_WR_ACPI_SFAN
;
7333 fan_control_commands
|=
7334 TPACPI_FAN_CMD_LEVEL
| TPACPI_FAN_CMD_ENABLE
;
7337 /* gfan without sfan means no fan control */
7338 /* all other models implement TP EC 0x2f control */
7342 fan_control_access_mode
=
7343 TPACPI_FAN_WR_ACPI_FANS
;
7344 fan_control_commands
|=
7345 TPACPI_FAN_CMD_SPEED
|
7346 TPACPI_FAN_CMD_LEVEL
|
7347 TPACPI_FAN_CMD_ENABLE
;
7349 fan_control_access_mode
= TPACPI_FAN_WR_TPEC
;
7350 fan_control_commands
|=
7351 TPACPI_FAN_CMD_LEVEL
|
7352 TPACPI_FAN_CMD_ENABLE
;
7357 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
7358 "fan is %s, modes %d, %d\n",
7359 str_supported(fan_status_access_mode
!= TPACPI_FAN_NONE
||
7360 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
),
7361 fan_status_access_mode
, fan_control_access_mode
);
7363 /* fan control master switch */
7364 if (!fan_control_allowed
) {
7365 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
7366 fan_control_commands
= 0;
7367 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
7368 "fan control features disabled by parameter\n");
7371 /* update fan_control_desired_level */
7372 if (fan_status_access_mode
!= TPACPI_FAN_NONE
)
7373 fan_get_status_safe(NULL
);
7375 if (fan_status_access_mode
!= TPACPI_FAN_NONE
||
7376 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
) {
7377 if (tp_features
.second_fan
) {
7378 /* attach second fan tachometer */
7379 fan_attributes
[ARRAY_SIZE(fan_attributes
)-2] =
7380 &dev_attr_fan_fan2_input
.attr
;
7382 rc
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
7387 rc
= driver_create_file(&tpacpi_hwmon_pdriver
.driver
,
7388 &driver_attr_fan_watchdog
);
7390 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
7399 static void fan_exit(void)
7401 vdbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_FAN
,
7402 "cancelling any pending fan watchdog tasks\n");
7404 /* FIXME: can we really do this unconditionally? */
7405 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
, &fan_attr_group
);
7406 driver_remove_file(&tpacpi_hwmon_pdriver
.driver
,
7407 &driver_attr_fan_watchdog
);
7409 cancel_delayed_work(&fan_watchdog_task
);
7410 flush_workqueue(tpacpi_wq
);
7413 static void fan_suspend(pm_message_t state
)
7417 if (!fan_control_allowed
)
7420 /* Store fan status in cache */
7421 fan_control_resume_level
= 0;
7422 rc
= fan_get_status_safe(&fan_control_resume_level
);
7424 printk(TPACPI_NOTICE
7425 "failed to read fan level for later "
7426 "restore during resume: %d\n", rc
);
7428 /* if it is undefined, don't attempt to restore it.
7430 if (tp_features
.fan_ctrl_status_undef
)
7431 fan_control_resume_level
= 0;
7434 static void fan_resume(void)
7436 u8 current_level
= 7;
7437 bool do_set
= false;
7440 /* DSDT *always* updates status on resume */
7441 tp_features
.fan_ctrl_status_undef
= 0;
7443 if (!fan_control_allowed
||
7444 !fan_control_resume_level
||
7445 (fan_get_status_safe(¤t_level
) < 0))
7448 switch (fan_control_access_mode
) {
7449 case TPACPI_FAN_WR_ACPI_SFAN
:
7450 /* never decrease fan level */
7451 do_set
= (fan_control_resume_level
> current_level
);
7453 case TPACPI_FAN_WR_ACPI_FANS
:
7454 case TPACPI_FAN_WR_TPEC
:
7455 /* never decrease fan level, scale is:
7456 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
7458 * We expect the firmware to set either 7 or AUTO, but we
7459 * handle FULLSPEED out of paranoia.
7461 * So, we can safely only restore FULLSPEED or 7, anything
7462 * else could slow the fan. Restoring AUTO is useless, at
7463 * best that's exactly what the DSDT already set (it is the
7466 * Always keep in mind that the DSDT *will* have set the
7467 * fans to what the vendor supposes is the best level. We
7468 * muck with it only to speed the fan up.
7470 if (fan_control_resume_level
!= 7 &&
7471 !(fan_control_resume_level
& TP_EC_FAN_FULLSPEED
))
7474 do_set
= !(current_level
& TP_EC_FAN_FULLSPEED
) &&
7475 (current_level
!= fan_control_resume_level
);
7481 printk(TPACPI_NOTICE
7482 "restoring fan level to 0x%02x\n",
7483 fan_control_resume_level
);
7484 rc
= fan_set_level_safe(fan_control_resume_level
);
7486 printk(TPACPI_NOTICE
7487 "failed to restore fan level: %d\n", rc
);
7491 static int fan_read(char *p
)
7496 unsigned int speed
= 0;
7498 switch (fan_status_access_mode
) {
7499 case TPACPI_FAN_RD_ACPI_GFAN
:
7500 /* 570, 600e/x, 770e, 770x */
7501 rc
= fan_get_status_safe(&status
);
7505 len
+= sprintf(p
+ len
, "status:\t\t%s\n"
7507 (status
!= 0) ? "enabled" : "disabled", status
);
7510 case TPACPI_FAN_RD_TPEC
:
7511 /* all except 570, 600e/x, 770e, 770x */
7512 rc
= fan_get_status_safe(&status
);
7516 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
7517 (status
!= 0) ? "enabled" : "disabled");
7519 rc
= fan_get_speed(&speed
);
7523 len
+= sprintf(p
+ len
, "speed:\t\t%d\n", speed
);
7525 if (status
& TP_EC_FAN_FULLSPEED
)
7526 /* Disengaged mode takes precedence */
7527 len
+= sprintf(p
+ len
, "level:\t\tdisengaged\n");
7528 else if (status
& TP_EC_FAN_AUTO
)
7529 len
+= sprintf(p
+ len
, "level:\t\tauto\n");
7531 len
+= sprintf(p
+ len
, "level:\t\t%d\n", status
);
7534 case TPACPI_FAN_NONE
:
7536 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
7539 if (fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) {
7540 len
+= sprintf(p
+ len
, "commands:\tlevel <level>");
7542 switch (fan_control_access_mode
) {
7543 case TPACPI_FAN_WR_ACPI_SFAN
:
7544 len
+= sprintf(p
+ len
, " (<level> is 0-7)\n");
7548 len
+= sprintf(p
+ len
, " (<level> is 0-7, "
7549 "auto, disengaged, full-speed)\n");
7554 if (fan_control_commands
& TPACPI_FAN_CMD_ENABLE
)
7555 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n"
7556 "commands:\twatchdog <timeout> (<timeout> "
7557 "is 0 (off), 1-120 (seconds))\n");
7559 if (fan_control_commands
& TPACPI_FAN_CMD_SPEED
)
7560 len
+= sprintf(p
+ len
, "commands:\tspeed <speed>"
7561 " (<speed> is 0-65535)\n");
7566 static int fan_write_cmd_level(const char *cmd
, int *rc
)
7570 if (strlencmp(cmd
, "level auto") == 0)
7571 level
= TP_EC_FAN_AUTO
;
7572 else if ((strlencmp(cmd
, "level disengaged") == 0) |
7573 (strlencmp(cmd
, "level full-speed") == 0))
7574 level
= TP_EC_FAN_FULLSPEED
;
7575 else if (sscanf(cmd
, "level %d", &level
) != 1)
7578 *rc
= fan_set_level_safe(level
);
7580 printk(TPACPI_ERR
"level command accepted for unsupported "
7581 "access mode %d", fan_control_access_mode
);
7583 tpacpi_disclose_usertask("procfs fan",
7584 "set level to %d\n", level
);
7589 static int fan_write_cmd_enable(const char *cmd
, int *rc
)
7591 if (strlencmp(cmd
, "enable") != 0)
7594 *rc
= fan_set_enable();
7596 printk(TPACPI_ERR
"enable command accepted for unsupported "
7597 "access mode %d", fan_control_access_mode
);
7599 tpacpi_disclose_usertask("procfs fan", "enable\n");
7604 static int fan_write_cmd_disable(const char *cmd
, int *rc
)
7606 if (strlencmp(cmd
, "disable") != 0)
7609 *rc
= fan_set_disable();
7611 printk(TPACPI_ERR
"disable command accepted for unsupported "
7612 "access mode %d", fan_control_access_mode
);
7614 tpacpi_disclose_usertask("procfs fan", "disable\n");
7619 static int fan_write_cmd_speed(const char *cmd
, int *rc
)
7624 * Support speed <low> <medium> <high> ? */
7626 if (sscanf(cmd
, "speed %d", &speed
) != 1)
7629 *rc
= fan_set_speed(speed
);
7631 printk(TPACPI_ERR
"speed command accepted for unsupported "
7632 "access mode %d", fan_control_access_mode
);
7634 tpacpi_disclose_usertask("procfs fan",
7635 "set speed to %d\n", speed
);
7640 static int fan_write_cmd_watchdog(const char *cmd
, int *rc
)
7644 if (sscanf(cmd
, "watchdog %d", &interval
) != 1)
7647 if (interval
< 0 || interval
> 120)
7650 fan_watchdog_maxinterval
= interval
;
7651 tpacpi_disclose_usertask("procfs fan",
7652 "set watchdog timer to %d\n",
7659 static int fan_write(char *buf
)
7664 while (!rc
&& (cmd
= next_cmd(&buf
))) {
7665 if (!((fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) &&
7666 fan_write_cmd_level(cmd
, &rc
)) &&
7667 !((fan_control_commands
& TPACPI_FAN_CMD_ENABLE
) &&
7668 (fan_write_cmd_enable(cmd
, &rc
) ||
7669 fan_write_cmd_disable(cmd
, &rc
) ||
7670 fan_write_cmd_watchdog(cmd
, &rc
))) &&
7671 !((fan_control_commands
& TPACPI_FAN_CMD_SPEED
) &&
7672 fan_write_cmd_speed(cmd
, &rc
))
7676 fan_watchdog_reset();
7682 static struct ibm_struct fan_driver_data
= {
7687 .suspend
= fan_suspend
,
7688 .resume
= fan_resume
,
7691 /****************************************************************************
7692 ****************************************************************************
7696 ****************************************************************************
7697 ****************************************************************************/
7700 * HKEY event callout for other subdrivers go here
7701 * (yes, it is ugly, but it is quick, safe, and gets the job done
7703 static void tpacpi_driver_event(const unsigned int hkey_event
)
7709 static void hotkey_driver_event(const unsigned int scancode
)
7711 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE
+ scancode
);
7714 /* sysfs name ---------------------------------------------------------- */
7715 static ssize_t
thinkpad_acpi_pdev_name_show(struct device
*dev
,
7716 struct device_attribute
*attr
,
7719 return snprintf(buf
, PAGE_SIZE
, "%s\n", TPACPI_NAME
);
7722 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name
=
7723 __ATTR(name
, S_IRUGO
, thinkpad_acpi_pdev_name_show
, NULL
);
7725 /* --------------------------------------------------------------------- */
7728 static struct proc_dir_entry
*proc_dir
;
7731 * Module and infrastructure proble, init and exit handling
7734 static int force_load
;
7736 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
7737 static const char * __init
str_supported(int is_supported
)
7739 static char text_unsupported
[] __initdata
= "not supported";
7741 return (is_supported
)? &text_unsupported
[4] : &text_unsupported
[0];
7743 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
7745 static void ibm_exit(struct ibm_struct
*ibm
)
7747 dbg_printk(TPACPI_DBG_EXIT
, "removing %s\n", ibm
->name
);
7749 list_del_init(&ibm
->all_drivers
);
7751 if (ibm
->flags
.acpi_notify_installed
) {
7752 dbg_printk(TPACPI_DBG_EXIT
,
7753 "%s: acpi_remove_notify_handler\n", ibm
->name
);
7755 acpi_remove_notify_handler(*ibm
->acpi
->handle
,
7757 dispatch_acpi_notify
);
7758 ibm
->flags
.acpi_notify_installed
= 0;
7759 ibm
->flags
.acpi_notify_installed
= 0;
7762 if (ibm
->flags
.proc_created
) {
7763 dbg_printk(TPACPI_DBG_EXIT
,
7764 "%s: remove_proc_entry\n", ibm
->name
);
7765 remove_proc_entry(ibm
->name
, proc_dir
);
7766 ibm
->flags
.proc_created
= 0;
7769 if (ibm
->flags
.acpi_driver_registered
) {
7770 dbg_printk(TPACPI_DBG_EXIT
,
7771 "%s: acpi_bus_unregister_driver\n", ibm
->name
);
7773 acpi_bus_unregister_driver(ibm
->acpi
->driver
);
7774 kfree(ibm
->acpi
->driver
);
7775 ibm
->acpi
->driver
= NULL
;
7776 ibm
->flags
.acpi_driver_registered
= 0;
7779 if (ibm
->flags
.init_called
&& ibm
->exit
) {
7781 ibm
->flags
.init_called
= 0;
7784 dbg_printk(TPACPI_DBG_INIT
, "finished removing %s\n", ibm
->name
);
7787 static int __init
ibm_init(struct ibm_init_struct
*iibm
)
7790 struct ibm_struct
*ibm
= iibm
->data
;
7791 struct proc_dir_entry
*entry
;
7793 BUG_ON(ibm
== NULL
);
7795 INIT_LIST_HEAD(&ibm
->all_drivers
);
7797 if (ibm
->flags
.experimental
&& !experimental
)
7800 dbg_printk(TPACPI_DBG_INIT
,
7801 "probing for %s\n", ibm
->name
);
7804 ret
= iibm
->init(iibm
);
7806 return 0; /* probe failed */
7810 ibm
->flags
.init_called
= 1;
7814 if (ibm
->acpi
->hid
) {
7815 ret
= register_tpacpi_subdriver(ibm
);
7820 if (ibm
->acpi
->notify
) {
7821 ret
= setup_acpi_notify(ibm
);
7822 if (ret
== -ENODEV
) {
7823 printk(TPACPI_NOTICE
"disabling subdriver %s\n",
7833 dbg_printk(TPACPI_DBG_INIT
,
7834 "%s installed\n", ibm
->name
);
7837 entry
= create_proc_entry(ibm
->name
,
7838 S_IFREG
| S_IRUGO
| S_IWUSR
,
7841 printk(TPACPI_ERR
"unable to create proc entry %s\n",
7847 entry
->read_proc
= &dispatch_procfs_read
;
7849 entry
->write_proc
= &dispatch_procfs_write
;
7850 ibm
->flags
.proc_created
= 1;
7853 list_add_tail(&ibm
->all_drivers
, &tpacpi_all_drivers
);
7858 dbg_printk(TPACPI_DBG_INIT
,
7859 "%s: at error exit path with result %d\n",
7863 return (ret
< 0)? ret
: 0;
7868 static bool __pure __init
tpacpi_is_fw_digit(const char c
)
7870 return (c
>= '0' && c
<= '9') || (c
>= 'A' && c
<= 'Z');
7873 /* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
7874 static bool __pure __init
tpacpi_is_valid_fw_id(const char* const s
,
7877 return s
&& strlen(s
) >= 8 &&
7878 tpacpi_is_fw_digit(s
[0]) &&
7879 tpacpi_is_fw_digit(s
[1]) &&
7880 s
[2] == t
&& s
[3] == 'T' &&
7881 tpacpi_is_fw_digit(s
[4]) &&
7882 tpacpi_is_fw_digit(s
[5]) &&
7883 s
[6] == 'W' && s
[7] == 'W';
7886 /* returns 0 - probe ok, or < 0 - probe error.
7887 * Probe ok doesn't mean thinkpad found.
7888 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
7889 static int __must_check __init
get_thinkpad_model_data(
7890 struct thinkpad_id_data
*tp
)
7892 const struct dmi_device
*dev
= NULL
;
7893 char ec_fw_string
[18];
7899 memset(tp
, 0, sizeof(*tp
));
7901 if (dmi_name_in_vendors("IBM"))
7902 tp
->vendor
= PCI_VENDOR_ID_IBM
;
7903 else if (dmi_name_in_vendors("LENOVO"))
7904 tp
->vendor
= PCI_VENDOR_ID_LENOVO
;
7908 s
= dmi_get_system_info(DMI_BIOS_VERSION
);
7909 tp
->bios_version_str
= kstrdup(s
, GFP_KERNEL
);
7910 if (s
&& !tp
->bios_version_str
)
7913 /* Really ancient ThinkPad 240X will fail this, which is fine */
7914 if (!tpacpi_is_valid_fw_id(tp
->bios_version_str
, 'E'))
7917 tp
->bios_model
= tp
->bios_version_str
[0]
7918 | (tp
->bios_version_str
[1] << 8);
7919 tp
->bios_release
= (tp
->bios_version_str
[4] << 8)
7920 | tp
->bios_version_str
[5];
7923 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
7924 * X32 or newer, all Z series; Some models must have an
7925 * up-to-date BIOS or they will not be detected.
7927 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7929 while ((dev
= dmi_find_device(DMI_DEV_TYPE_OEM_STRING
, NULL
, dev
))) {
7930 if (sscanf(dev
->name
,
7931 "IBM ThinkPad Embedded Controller -[%17c",
7932 ec_fw_string
) == 1) {
7933 ec_fw_string
[sizeof(ec_fw_string
) - 1] = 0;
7934 ec_fw_string
[strcspn(ec_fw_string
, " ]")] = 0;
7936 tp
->ec_version_str
= kstrdup(ec_fw_string
, GFP_KERNEL
);
7937 if (!tp
->ec_version_str
)
7940 if (tpacpi_is_valid_fw_id(ec_fw_string
, 'H')) {
7941 tp
->ec_model
= ec_fw_string
[0]
7942 | (ec_fw_string
[1] << 8);
7943 tp
->ec_release
= (ec_fw_string
[4] << 8)
7946 printk(TPACPI_NOTICE
7947 "ThinkPad firmware release %s "
7948 "doesn't match the known patterns\n",
7950 printk(TPACPI_NOTICE
7951 "please report this to %s\n",
7958 s
= dmi_get_system_info(DMI_PRODUCT_VERSION
);
7959 if (s
&& !strnicmp(s
, "ThinkPad", 8)) {
7960 tp
->model_str
= kstrdup(s
, GFP_KERNEL
);
7965 s
= dmi_get_system_info(DMI_PRODUCT_NAME
);
7966 tp
->nummodel_str
= kstrdup(s
, GFP_KERNEL
);
7967 if (s
&& !tp
->nummodel_str
)
7973 static int __init
probe_for_thinkpad(void)
7981 * Non-ancient models have better DMI tagging, but very old models
7982 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
7984 is_thinkpad
= (thinkpad_id
.model_str
!= NULL
) ||
7985 (thinkpad_id
.ec_model
!= 0) ||
7986 tpacpi_is_fw_known();
7988 /* ec is required because many other handles are relative to it */
7989 TPACPI_ACPIHANDLE_INIT(ec
);
7993 "Not yet supported ThinkPad detected!\n");
7997 if (!is_thinkpad
&& !force_load
)
8004 /* Module init, exit, parameters */
8006 static struct ibm_init_struct ibms_init
[] __initdata
= {
8008 .init
= thinkpad_acpi_driver_init
,
8009 .data
= &thinkpad_acpi_driver_data
,
8012 .init
= hotkey_init
,
8013 .data
= &hotkey_driver_data
,
8016 .init
= bluetooth_init
,
8017 .data
= &bluetooth_driver_data
,
8021 .data
= &wan_driver_data
,
8025 .data
= &uwb_driver_data
,
8027 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
8030 .data
= &video_driver_data
,
8035 .data
= &light_driver_data
,
8039 .data
= &cmos_driver_data
,
8043 .data
= &led_driver_data
,
8047 .data
= &beep_driver_data
,
8050 .init
= thermal_init
,
8051 .data
= &thermal_driver_data
,
8054 .data
= &ecdump_driver_data
,
8057 .init
= brightness_init
,
8058 .data
= &brightness_driver_data
,
8061 .data
= &volume_driver_data
,
8065 .data
= &fan_driver_data
,
8069 static int __init
set_ibm_param(const char *val
, struct kernel_param
*kp
)
8072 struct ibm_struct
*ibm
;
8074 if (!kp
|| !kp
->name
|| !val
)
8077 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
8078 ibm
= ibms_init
[i
].data
;
8079 WARN_ON(ibm
== NULL
);
8081 if (!ibm
|| !ibm
->name
)
8084 if (strcmp(ibm
->name
, kp
->name
) == 0 && ibm
->write
) {
8085 if (strlen(val
) > sizeof(ibms_init
[i
].param
) - 2)
8087 strcpy(ibms_init
[i
].param
, val
);
8088 strcat(ibms_init
[i
].param
, ",");
8096 module_param(experimental
, int, 0);
8097 MODULE_PARM_DESC(experimental
,
8098 "Enables experimental features when non-zero");
8100 module_param_named(debug
, dbg_level
, uint
, 0);
8101 MODULE_PARM_DESC(debug
, "Sets debug level bit-mask");
8103 module_param(force_load
, bool, 0);
8104 MODULE_PARM_DESC(force_load
,
8105 "Attempts to load the driver even on a "
8106 "mis-identified ThinkPad when true");
8108 module_param_named(fan_control
, fan_control_allowed
, bool, 0);
8109 MODULE_PARM_DESC(fan_control
,
8110 "Enables setting fan parameters features when true");
8112 module_param_named(brightness_mode
, brightness_mode
, uint
, 0);
8113 MODULE_PARM_DESC(brightness_mode
,
8114 "Selects brightness control strategy: "
8115 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
8117 module_param(brightness_enable
, uint
, 0);
8118 MODULE_PARM_DESC(brightness_enable
,
8119 "Enables backlight control when 1, disables when 0");
8121 module_param(hotkey_report_mode
, uint
, 0);
8122 MODULE_PARM_DESC(hotkey_report_mode
,
8123 "used for backwards compatibility with userspace, "
8124 "see documentation");
8126 #define TPACPI_PARAM(feature) \
8127 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
8128 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
8129 "at module load, see documentation")
8131 TPACPI_PARAM(hotkey
);
8132 TPACPI_PARAM(bluetooth
);
8133 TPACPI_PARAM(video
);
8134 TPACPI_PARAM(light
);
8138 TPACPI_PARAM(ecdump
);
8139 TPACPI_PARAM(brightness
);
8140 TPACPI_PARAM(volume
);
8143 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
8144 module_param(dbg_wlswemul
, uint
, 0);
8145 MODULE_PARM_DESC(dbg_wlswemul
, "Enables WLSW emulation");
8146 module_param_named(wlsw_state
, tpacpi_wlsw_emulstate
, bool, 0);
8147 MODULE_PARM_DESC(wlsw_state
,
8148 "Initial state of the emulated WLSW switch");
8150 module_param(dbg_bluetoothemul
, uint
, 0);
8151 MODULE_PARM_DESC(dbg_bluetoothemul
, "Enables bluetooth switch emulation");
8152 module_param_named(bluetooth_state
, tpacpi_bluetooth_emulstate
, bool, 0);
8153 MODULE_PARM_DESC(bluetooth_state
,
8154 "Initial state of the emulated bluetooth switch");
8156 module_param(dbg_wwanemul
, uint
, 0);
8157 MODULE_PARM_DESC(dbg_wwanemul
, "Enables WWAN switch emulation");
8158 module_param_named(wwan_state
, tpacpi_wwan_emulstate
, bool, 0);
8159 MODULE_PARM_DESC(wwan_state
,
8160 "Initial state of the emulated WWAN switch");
8162 module_param(dbg_uwbemul
, uint
, 0);
8163 MODULE_PARM_DESC(dbg_uwbemul
, "Enables UWB switch emulation");
8164 module_param_named(uwb_state
, tpacpi_uwb_emulstate
, bool, 0);
8165 MODULE_PARM_DESC(uwb_state
,
8166 "Initial state of the emulated UWB switch");
8169 static void thinkpad_acpi_module_exit(void)
8171 struct ibm_struct
*ibm
, *itmp
;
8173 tpacpi_lifecycle
= TPACPI_LIFE_EXITING
;
8175 list_for_each_entry_safe_reverse(ibm
, itmp
,
8176 &tpacpi_all_drivers
,
8181 dbg_printk(TPACPI_DBG_INIT
, "finished subdriver exit path...\n");
8183 if (tpacpi_inputdev
) {
8184 if (tp_features
.input_device_registered
)
8185 input_unregister_device(tpacpi_inputdev
);
8187 input_free_device(tpacpi_inputdev
);
8191 hwmon_device_unregister(tpacpi_hwmon
);
8193 if (tp_features
.sensors_pdev_attrs_registered
)
8194 device_remove_file(&tpacpi_sensors_pdev
->dev
,
8195 &dev_attr_thinkpad_acpi_pdev_name
);
8196 if (tpacpi_sensors_pdev
)
8197 platform_device_unregister(tpacpi_sensors_pdev
);
8199 platform_device_unregister(tpacpi_pdev
);
8201 if (tp_features
.sensors_pdrv_attrs_registered
)
8202 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver
.driver
);
8203 if (tp_features
.platform_drv_attrs_registered
)
8204 tpacpi_remove_driver_attributes(&tpacpi_pdriver
.driver
);
8206 if (tp_features
.sensors_pdrv_registered
)
8207 platform_driver_unregister(&tpacpi_hwmon_pdriver
);
8209 if (tp_features
.platform_drv_registered
)
8210 platform_driver_unregister(&tpacpi_pdriver
);
8213 remove_proc_entry(TPACPI_PROC_DIR
, acpi_root_dir
);
8216 destroy_workqueue(tpacpi_wq
);
8218 kfree(thinkpad_id
.bios_version_str
);
8219 kfree(thinkpad_id
.ec_version_str
);
8220 kfree(thinkpad_id
.model_str
);
8224 static int __init
thinkpad_acpi_module_init(void)
8228 tpacpi_lifecycle
= TPACPI_LIFE_INIT
;
8230 /* Parameter checking */
8231 if (hotkey_report_mode
> 2)
8234 /* Driver-level probe */
8236 ret
= get_thinkpad_model_data(&thinkpad_id
);
8239 "unable to get DMI data: %d\n", ret
);
8240 thinkpad_acpi_module_exit();
8243 ret
= probe_for_thinkpad();
8245 thinkpad_acpi_module_exit();
8249 /* Driver initialization */
8251 TPACPI_ACPIHANDLE_INIT(ecrd
);
8252 TPACPI_ACPIHANDLE_INIT(ecwr
);
8254 tpacpi_wq
= create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME
);
8256 thinkpad_acpi_module_exit();
8260 proc_dir
= proc_mkdir(TPACPI_PROC_DIR
, acpi_root_dir
);
8263 "unable to create proc dir " TPACPI_PROC_DIR
);
8264 thinkpad_acpi_module_exit();
8268 ret
= platform_driver_register(&tpacpi_pdriver
);
8271 "unable to register main platform driver\n");
8272 thinkpad_acpi_module_exit();
8275 tp_features
.platform_drv_registered
= 1;
8277 ret
= platform_driver_register(&tpacpi_hwmon_pdriver
);
8280 "unable to register hwmon platform driver\n");
8281 thinkpad_acpi_module_exit();
8284 tp_features
.sensors_pdrv_registered
= 1;
8286 ret
= tpacpi_create_driver_attributes(&tpacpi_pdriver
.driver
);
8288 tp_features
.platform_drv_attrs_registered
= 1;
8289 ret
= tpacpi_create_driver_attributes(
8290 &tpacpi_hwmon_pdriver
.driver
);
8294 "unable to create sysfs driver attributes\n");
8295 thinkpad_acpi_module_exit();
8298 tp_features
.sensors_pdrv_attrs_registered
= 1;
8301 /* Device initialization */
8302 tpacpi_pdev
= platform_device_register_simple(TPACPI_DRVR_NAME
, -1,
8304 if (IS_ERR(tpacpi_pdev
)) {
8305 ret
= PTR_ERR(tpacpi_pdev
);
8307 printk(TPACPI_ERR
"unable to register platform device\n");
8308 thinkpad_acpi_module_exit();
8311 tpacpi_sensors_pdev
= platform_device_register_simple(
8312 TPACPI_HWMON_DRVR_NAME
,
8314 if (IS_ERR(tpacpi_sensors_pdev
)) {
8315 ret
= PTR_ERR(tpacpi_sensors_pdev
);
8316 tpacpi_sensors_pdev
= NULL
;
8318 "unable to register hwmon platform device\n");
8319 thinkpad_acpi_module_exit();
8322 ret
= device_create_file(&tpacpi_sensors_pdev
->dev
,
8323 &dev_attr_thinkpad_acpi_pdev_name
);
8326 "unable to create sysfs hwmon device attributes\n");
8327 thinkpad_acpi_module_exit();
8330 tp_features
.sensors_pdev_attrs_registered
= 1;
8331 tpacpi_hwmon
= hwmon_device_register(&tpacpi_sensors_pdev
->dev
);
8332 if (IS_ERR(tpacpi_hwmon
)) {
8333 ret
= PTR_ERR(tpacpi_hwmon
);
8334 tpacpi_hwmon
= NULL
;
8335 printk(TPACPI_ERR
"unable to register hwmon device\n");
8336 thinkpad_acpi_module_exit();
8339 mutex_init(&tpacpi_inputdev_send_mutex
);
8340 tpacpi_inputdev
= input_allocate_device();
8341 if (!tpacpi_inputdev
) {
8342 printk(TPACPI_ERR
"unable to allocate input device\n");
8343 thinkpad_acpi_module_exit();
8346 /* Prepare input device, but don't register */
8347 tpacpi_inputdev
->name
= "ThinkPad Extra Buttons";
8348 tpacpi_inputdev
->phys
= TPACPI_DRVR_NAME
"/input0";
8349 tpacpi_inputdev
->id
.bustype
= BUS_HOST
;
8350 tpacpi_inputdev
->id
.vendor
= (thinkpad_id
.vendor
) ?
8351 thinkpad_id
.vendor
:
8353 tpacpi_inputdev
->id
.product
= TPACPI_HKEY_INPUT_PRODUCT
;
8354 tpacpi_inputdev
->id
.version
= TPACPI_HKEY_INPUT_VERSION
;
8356 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
8357 ret
= ibm_init(&ibms_init
[i
]);
8358 if (ret
>= 0 && *ibms_init
[i
].param
)
8359 ret
= ibms_init
[i
].data
->write(ibms_init
[i
].param
);
8361 thinkpad_acpi_module_exit();
8365 ret
= input_register_device(tpacpi_inputdev
);
8367 printk(TPACPI_ERR
"unable to register input device\n");
8368 thinkpad_acpi_module_exit();
8371 tp_features
.input_device_registered
= 1;
8374 tpacpi_lifecycle
= TPACPI_LIFE_RUNNING
;
8378 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME
);
8381 * This will autoload the driver in almost every ThinkPad
8382 * in widespread use.
8384 * Only _VERY_ old models, like the 240, 240x and 570 lack
8385 * the HKEY event interface.
8387 MODULE_DEVICE_TABLE(acpi
, ibm_htk_device_ids
);
8390 * DMI matching for module autoloading
8392 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
8393 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
8395 * Only models listed in thinkwiki will be supported, so add yours
8396 * if it is not there yet.
8398 #define IBM_BIOS_MODULE_ALIAS(__type) \
8399 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
8401 /* Ancient thinkpad BIOSes have to be identified by
8402 * BIOS type or model number, and there are far less
8403 * BIOS types than model numbers... */
8404 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
8406 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
8407 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
8408 MODULE_DESCRIPTION(TPACPI_DESC
);
8409 MODULE_VERSION(TPACPI_VERSION
);
8410 MODULE_LICENSE("GPL");
8412 module_init(thinkpad_acpi_module_init
);
8413 module_exit(thinkpad_acpi_module_exit
);