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 0x020600
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 if (tpacpi_lifecycle
!= TPACPI_LIFE_EXITING
)
2193 hotkey_mask_warn_incomplete_mask();
2199 * Sets hotkey_user_mask and tries to set the firmware mask
2201 * Call with hotkey_mutex held
2203 static int hotkey_user_mask_set(const u32 mask
)
2207 /* Give people a chance to notice they are doing something that
2208 * is bound to go boom on their users sooner or later */
2209 if (!tp_warned
.hotkey_mask_ff
&&
2210 (mask
== 0xffff || mask
== 0xffffff ||
2211 mask
== 0xffffffff)) {
2212 tp_warned
.hotkey_mask_ff
= 1;
2213 printk(TPACPI_NOTICE
2214 "setting the hotkey mask to 0x%08x is likely "
2215 "not the best way to go about it\n", mask
);
2216 printk(TPACPI_NOTICE
2217 "please consider using the driver defaults, "
2218 "and refer to up-to-date thinkpad-acpi "
2222 /* Try to enable what the user asked for, plus whatever we need.
2223 * this syncs everything but won't enable bits in hotkey_user_mask */
2224 rc
= hotkey_mask_set((mask
| hotkey_driver_mask
) & ~hotkey_source_mask
);
2226 /* Enable the available bits in hotkey_user_mask */
2227 hotkey_user_mask
= mask
& (hotkey_acpi_mask
| hotkey_source_mask
);
2233 * Sets the driver hotkey mask.
2235 * Can be called even if the hotkey subdriver is inactive
2237 static int tpacpi_hotkey_driver_mask_set(const u32 mask
)
2241 /* Do the right thing if hotkey_init has not been called yet */
2242 if (!tp_features
.hotkey
) {
2243 hotkey_driver_mask
= mask
;
2247 mutex_lock(&hotkey_mutex
);
2249 HOTKEY_CONFIG_CRITICAL_START
2250 hotkey_driver_mask
= mask
;
2251 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2252 hotkey_source_mask
|= (mask
& ~hotkey_all_mask
);
2254 HOTKEY_CONFIG_CRITICAL_END
2256 rc
= hotkey_mask_set((hotkey_acpi_mask
| hotkey_driver_mask
) &
2257 ~hotkey_source_mask
);
2258 mutex_unlock(&hotkey_mutex
);
2263 static int hotkey_status_get(int *status
)
2265 if (!acpi_evalf(hkey_handle
, status
, "DHKC", "d"))
2271 static int hotkey_status_set(bool enable
)
2273 if (!acpi_evalf(hkey_handle
, NULL
, "MHKC", "vd", enable
? 1 : 0))
2279 static void tpacpi_input_send_tabletsw(void)
2283 if (tp_features
.hotkey_tablet
&&
2284 !hotkey_get_tablet_mode(&state
)) {
2285 mutex_lock(&tpacpi_inputdev_send_mutex
);
2287 input_report_switch(tpacpi_inputdev
,
2288 SW_TABLET_MODE
, !!state
);
2289 input_sync(tpacpi_inputdev
);
2291 mutex_unlock(&tpacpi_inputdev_send_mutex
);
2295 /* Do NOT call without validating scancode first */
2296 static void tpacpi_input_send_key(const unsigned int scancode
)
2298 const unsigned int keycode
= hotkey_keycode_map
[scancode
];
2300 if (keycode
!= KEY_RESERVED
) {
2301 mutex_lock(&tpacpi_inputdev_send_mutex
);
2303 input_report_key(tpacpi_inputdev
, keycode
, 1);
2304 if (keycode
== KEY_UNKNOWN
)
2305 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
,
2307 input_sync(tpacpi_inputdev
);
2309 input_report_key(tpacpi_inputdev
, keycode
, 0);
2310 if (keycode
== KEY_UNKNOWN
)
2311 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
,
2313 input_sync(tpacpi_inputdev
);
2315 mutex_unlock(&tpacpi_inputdev_send_mutex
);
2319 /* Do NOT call without validating scancode first */
2320 static void tpacpi_input_send_key_masked(const unsigned int scancode
)
2322 hotkey_driver_event(scancode
);
2323 if (hotkey_user_mask
& (1 << scancode
))
2324 tpacpi_input_send_key(scancode
);
2327 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2328 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
;
2330 /* Do NOT call without validating scancode first */
2331 static void tpacpi_hotkey_send_key(unsigned int scancode
)
2333 tpacpi_input_send_key_masked(scancode
);
2334 if (hotkey_report_mode
< 2) {
2335 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver
.device
,
2336 0x80, TP_HKEY_EV_HOTKEY_BASE
+ scancode
);
2340 static void hotkey_read_nvram(struct tp_nvram_state
*n
, const u32 m
)
2344 if (m
& TP_NVRAM_HKEY_GROUP_HK2
) {
2345 d
= nvram_read_byte(TP_NVRAM_ADDR_HK2
);
2346 n
->thinkpad_toggle
= !!(d
& TP_NVRAM_MASK_HKT_THINKPAD
);
2347 n
->zoom_toggle
= !!(d
& TP_NVRAM_MASK_HKT_ZOOM
);
2348 n
->display_toggle
= !!(d
& TP_NVRAM_MASK_HKT_DISPLAY
);
2349 n
->hibernate_toggle
= !!(d
& TP_NVRAM_MASK_HKT_HIBERNATE
);
2351 if (m
& TP_ACPI_HKEY_THNKLGHT_MASK
) {
2352 d
= nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT
);
2353 n
->thinklight_toggle
= !!(d
& TP_NVRAM_MASK_THINKLIGHT
);
2355 if (m
& TP_ACPI_HKEY_DISPXPAND_MASK
) {
2356 d
= nvram_read_byte(TP_NVRAM_ADDR_VIDEO
);
2357 n
->displayexp_toggle
=
2358 !!(d
& TP_NVRAM_MASK_HKT_DISPEXPND
);
2360 if (m
& TP_NVRAM_HKEY_GROUP_BRIGHTNESS
) {
2361 d
= nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
);
2362 n
->brightness_level
= (d
& TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
2363 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
2364 n
->brightness_toggle
=
2365 !!(d
& TP_NVRAM_MASK_HKT_BRIGHTNESS
);
2367 if (m
& TP_NVRAM_HKEY_GROUP_VOLUME
) {
2368 d
= nvram_read_byte(TP_NVRAM_ADDR_MIXER
);
2369 n
->volume_level
= (d
& TP_NVRAM_MASK_LEVEL_VOLUME
)
2370 >> TP_NVRAM_POS_LEVEL_VOLUME
;
2371 n
->mute
= !!(d
& TP_NVRAM_MASK_MUTE
);
2372 n
->volume_toggle
= !!(d
& TP_NVRAM_MASK_HKT_VOLUME
);
2376 static void hotkey_compare_and_issue_event(struct tp_nvram_state
*oldn
,
2377 struct tp_nvram_state
*newn
,
2378 const u32 event_mask
)
2381 #define TPACPI_COMPARE_KEY(__scancode, __member) \
2383 if ((event_mask & (1 << __scancode)) && \
2384 oldn->__member != newn->__member) \
2385 tpacpi_hotkey_send_key(__scancode); \
2388 #define TPACPI_MAY_SEND_KEY(__scancode) \
2390 if (event_mask & (1 << __scancode)) \
2391 tpacpi_hotkey_send_key(__scancode); \
2394 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD
, thinkpad_toggle
);
2395 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE
, zoom_toggle
);
2396 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7
, display_toggle
);
2397 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12
, hibernate_toggle
);
2399 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP
, thinklight_toggle
);
2401 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8
, displayexp_toggle
);
2404 if (oldn
->volume_toggle
!= newn
->volume_toggle
) {
2405 if (oldn
->mute
!= newn
->mute
) {
2406 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE
);
2408 if (oldn
->volume_level
> newn
->volume_level
) {
2409 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
2410 } else if (oldn
->volume_level
< newn
->volume_level
) {
2411 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
2412 } else if (oldn
->mute
== newn
->mute
) {
2413 /* repeated key presses that didn't change state */
2415 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE
);
2416 } else if (newn
->volume_level
!= 0) {
2417 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
2419 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
2424 /* handle brightness */
2425 if (oldn
->brightness_toggle
!= newn
->brightness_toggle
) {
2426 if (oldn
->brightness_level
< newn
->brightness_level
) {
2427 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
2428 } else if (oldn
->brightness_level
> newn
->brightness_level
) {
2429 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
2431 /* repeated key presses that didn't change state */
2432 if (newn
->brightness_level
!= 0) {
2433 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
2435 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
2440 #undef TPACPI_COMPARE_KEY
2441 #undef TPACPI_MAY_SEND_KEY
2447 * We track all events in hotkey_source_mask all the time, since
2448 * most of them are edge-based. We only issue those requested by
2449 * hotkey_user_mask or hotkey_driver_mask, though.
2451 static int hotkey_kthread(void *data
)
2453 struct tp_nvram_state s
[2];
2454 u32 poll_mask
, event_mask
;
2455 unsigned int si
, so
;
2457 unsigned int change_detector
, must_reset
;
2458 unsigned int poll_freq
;
2460 mutex_lock(&hotkey_thread_mutex
);
2462 if (tpacpi_lifecycle
== TPACPI_LIFE_EXITING
)
2471 /* Initial state for compares */
2472 mutex_lock(&hotkey_thread_data_mutex
);
2473 change_detector
= hotkey_config_change
;
2474 poll_mask
= hotkey_source_mask
;
2475 event_mask
= hotkey_source_mask
&
2476 (hotkey_driver_mask
| hotkey_user_mask
);
2477 poll_freq
= hotkey_poll_freq
;
2478 mutex_unlock(&hotkey_thread_data_mutex
);
2479 hotkey_read_nvram(&s
[so
], poll_mask
);
2481 while (!kthread_should_stop()) {
2483 if (likely(poll_freq
))
2486 t
= 100; /* should never happen... */
2488 t
= msleep_interruptible(t
);
2489 if (unlikely(kthread_should_stop()))
2491 must_reset
= try_to_freeze();
2492 if (t
> 0 && !must_reset
)
2495 mutex_lock(&hotkey_thread_data_mutex
);
2496 if (must_reset
|| hotkey_config_change
!= change_detector
) {
2497 /* forget old state on thaw or config change */
2500 change_detector
= hotkey_config_change
;
2502 poll_mask
= hotkey_source_mask
;
2503 event_mask
= hotkey_source_mask
&
2504 (hotkey_driver_mask
| hotkey_user_mask
);
2505 poll_freq
= hotkey_poll_freq
;
2506 mutex_unlock(&hotkey_thread_data_mutex
);
2508 if (likely(poll_mask
)) {
2509 hotkey_read_nvram(&s
[si
], poll_mask
);
2510 if (likely(si
!= so
)) {
2511 hotkey_compare_and_issue_event(&s
[so
], &s
[si
],
2521 mutex_unlock(&hotkey_thread_mutex
);
2525 /* call with hotkey_mutex held */
2526 static void hotkey_poll_stop_sync(void)
2528 if (tpacpi_hotkey_task
) {
2529 if (frozen(tpacpi_hotkey_task
) ||
2530 freezing(tpacpi_hotkey_task
))
2531 thaw_process(tpacpi_hotkey_task
);
2533 kthread_stop(tpacpi_hotkey_task
);
2534 tpacpi_hotkey_task
= NULL
;
2535 mutex_lock(&hotkey_thread_mutex
);
2536 /* at this point, the thread did exit */
2537 mutex_unlock(&hotkey_thread_mutex
);
2541 /* call with hotkey_mutex held */
2542 static void hotkey_poll_setup(bool may_warn
)
2544 const u32 poll_driver_mask
= hotkey_driver_mask
& hotkey_source_mask
;
2545 const u32 poll_user_mask
= hotkey_user_mask
& hotkey_source_mask
;
2547 if (hotkey_poll_freq
> 0 &&
2548 (poll_driver_mask
||
2549 (poll_user_mask
&& tpacpi_inputdev
->users
> 0))) {
2550 if (!tpacpi_hotkey_task
) {
2551 tpacpi_hotkey_task
= kthread_run(hotkey_kthread
,
2552 NULL
, TPACPI_NVRAM_KTHREAD_NAME
);
2553 if (IS_ERR(tpacpi_hotkey_task
)) {
2554 tpacpi_hotkey_task
= NULL
;
2556 "could not create kernel thread "
2557 "for hotkey polling\n");
2561 hotkey_poll_stop_sync();
2562 if (may_warn
&& (poll_driver_mask
|| poll_user_mask
) &&
2563 hotkey_poll_freq
== 0) {
2564 printk(TPACPI_NOTICE
2565 "hot keys 0x%08x and/or events 0x%08x "
2566 "require polling, which is currently "
2568 poll_user_mask
, poll_driver_mask
);
2573 static void hotkey_poll_setup_safe(bool may_warn
)
2575 mutex_lock(&hotkey_mutex
);
2576 hotkey_poll_setup(may_warn
);
2577 mutex_unlock(&hotkey_mutex
);
2580 /* call with hotkey_mutex held */
2581 static void hotkey_poll_set_freq(unsigned int freq
)
2584 hotkey_poll_stop_sync();
2586 hotkey_poll_freq
= freq
;
2589 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2591 static void hotkey_poll_setup_safe(bool __unused
)
2595 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2597 static int hotkey_inputdev_open(struct input_dev
*dev
)
2599 switch (tpacpi_lifecycle
) {
2600 case TPACPI_LIFE_INIT
:
2602 * hotkey_init will call hotkey_poll_setup_safe
2603 * at the appropriate moment
2606 case TPACPI_LIFE_EXITING
:
2608 case TPACPI_LIFE_RUNNING
:
2609 hotkey_poll_setup_safe(false);
2613 /* Should only happen if tpacpi_lifecycle is corrupt */
2618 static void hotkey_inputdev_close(struct input_dev
*dev
)
2620 /* disable hotkey polling when possible */
2621 if (tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
&&
2622 !(hotkey_source_mask
& hotkey_driver_mask
))
2623 hotkey_poll_setup_safe(false);
2626 /* sysfs hotkey enable ------------------------------------------------- */
2627 static ssize_t
hotkey_enable_show(struct device
*dev
,
2628 struct device_attribute
*attr
,
2633 printk_deprecated_attribute("hotkey_enable",
2634 "Hotkey reporting is always enabled");
2636 res
= hotkey_status_get(&status
);
2640 return snprintf(buf
, PAGE_SIZE
, "%d\n", status
);
2643 static ssize_t
hotkey_enable_store(struct device
*dev
,
2644 struct device_attribute
*attr
,
2645 const char *buf
, size_t count
)
2649 printk_deprecated_attribute("hotkey_enable",
2650 "Hotkeys can be disabled through hotkey_mask");
2652 if (parse_strtoul(buf
, 1, &t
))
2661 static struct device_attribute dev_attr_hotkey_enable
=
2662 __ATTR(hotkey_enable
, S_IWUSR
| S_IRUGO
,
2663 hotkey_enable_show
, hotkey_enable_store
);
2665 /* sysfs hotkey mask --------------------------------------------------- */
2666 static ssize_t
hotkey_mask_show(struct device
*dev
,
2667 struct device_attribute
*attr
,
2670 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_user_mask
);
2673 static ssize_t
hotkey_mask_store(struct device
*dev
,
2674 struct device_attribute
*attr
,
2675 const char *buf
, size_t count
)
2680 if (parse_strtoul(buf
, 0xffffffffUL
, &t
))
2683 if (mutex_lock_killable(&hotkey_mutex
))
2684 return -ERESTARTSYS
;
2686 res
= hotkey_user_mask_set(t
);
2688 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2689 hotkey_poll_setup(true);
2692 mutex_unlock(&hotkey_mutex
);
2694 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t
);
2696 return (res
) ? res
: count
;
2699 static struct device_attribute dev_attr_hotkey_mask
=
2700 __ATTR(hotkey_mask
, S_IWUSR
| S_IRUGO
,
2701 hotkey_mask_show
, hotkey_mask_store
);
2703 /* sysfs hotkey bios_enabled ------------------------------------------- */
2704 static ssize_t
hotkey_bios_enabled_show(struct device
*dev
,
2705 struct device_attribute
*attr
,
2708 return sprintf(buf
, "0\n");
2711 static struct device_attribute dev_attr_hotkey_bios_enabled
=
2712 __ATTR(hotkey_bios_enabled
, S_IRUGO
, hotkey_bios_enabled_show
, NULL
);
2714 /* sysfs hotkey bios_mask ---------------------------------------------- */
2715 static ssize_t
hotkey_bios_mask_show(struct device
*dev
,
2716 struct device_attribute
*attr
,
2719 printk_deprecated_attribute("hotkey_bios_mask",
2720 "This attribute is useless.");
2721 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_orig_mask
);
2724 static struct device_attribute dev_attr_hotkey_bios_mask
=
2725 __ATTR(hotkey_bios_mask
, S_IRUGO
, hotkey_bios_mask_show
, NULL
);
2727 /* sysfs hotkey all_mask ----------------------------------------------- */
2728 static ssize_t
hotkey_all_mask_show(struct device
*dev
,
2729 struct device_attribute
*attr
,
2732 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
2733 hotkey_all_mask
| hotkey_source_mask
);
2736 static struct device_attribute dev_attr_hotkey_all_mask
=
2737 __ATTR(hotkey_all_mask
, S_IRUGO
, hotkey_all_mask_show
, NULL
);
2739 /* sysfs hotkey recommended_mask --------------------------------------- */
2740 static ssize_t
hotkey_recommended_mask_show(struct device
*dev
,
2741 struct device_attribute
*attr
,
2744 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
2745 (hotkey_all_mask
| hotkey_source_mask
)
2746 & ~hotkey_reserved_mask
);
2749 static struct device_attribute dev_attr_hotkey_recommended_mask
=
2750 __ATTR(hotkey_recommended_mask
, S_IRUGO
,
2751 hotkey_recommended_mask_show
, NULL
);
2753 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2755 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
2756 static ssize_t
hotkey_source_mask_show(struct device
*dev
,
2757 struct device_attribute
*attr
,
2760 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_source_mask
);
2763 static ssize_t
hotkey_source_mask_store(struct device
*dev
,
2764 struct device_attribute
*attr
,
2765 const char *buf
, size_t count
)
2771 if (parse_strtoul(buf
, 0xffffffffUL
, &t
) ||
2772 ((t
& ~TPACPI_HKEY_NVRAM_KNOWN_MASK
) != 0))
2775 if (mutex_lock_killable(&hotkey_mutex
))
2776 return -ERESTARTSYS
;
2778 HOTKEY_CONFIG_CRITICAL_START
2779 hotkey_source_mask
= t
;
2780 HOTKEY_CONFIG_CRITICAL_END
2782 rc
= hotkey_mask_set((hotkey_user_mask
| hotkey_driver_mask
) &
2783 ~hotkey_source_mask
);
2784 hotkey_poll_setup(true);
2786 /* check if events needed by the driver got disabled */
2787 r_ev
= hotkey_driver_mask
& ~(hotkey_acpi_mask
& hotkey_all_mask
)
2788 & ~hotkey_source_mask
& TPACPI_HKEY_NVRAM_KNOWN_MASK
;
2790 mutex_unlock(&hotkey_mutex
);
2793 printk(TPACPI_ERR
"hotkey_source_mask: failed to update the"
2794 "firmware event mask!\n");
2797 printk(TPACPI_NOTICE
"hotkey_source_mask: "
2798 "some important events were disabled: "
2801 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t
);
2803 return (rc
< 0) ? rc
: count
;
2806 static struct device_attribute dev_attr_hotkey_source_mask
=
2807 __ATTR(hotkey_source_mask
, S_IWUSR
| S_IRUGO
,
2808 hotkey_source_mask_show
, hotkey_source_mask_store
);
2810 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2811 static ssize_t
hotkey_poll_freq_show(struct device
*dev
,
2812 struct device_attribute
*attr
,
2815 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_poll_freq
);
2818 static ssize_t
hotkey_poll_freq_store(struct device
*dev
,
2819 struct device_attribute
*attr
,
2820 const char *buf
, size_t count
)
2824 if (parse_strtoul(buf
, 25, &t
))
2827 if (mutex_lock_killable(&hotkey_mutex
))
2828 return -ERESTARTSYS
;
2830 hotkey_poll_set_freq(t
);
2831 hotkey_poll_setup(true);
2833 mutex_unlock(&hotkey_mutex
);
2835 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t
);
2840 static struct device_attribute dev_attr_hotkey_poll_freq
=
2841 __ATTR(hotkey_poll_freq
, S_IWUSR
| S_IRUGO
,
2842 hotkey_poll_freq_show
, hotkey_poll_freq_store
);
2844 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2846 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
2847 static ssize_t
hotkey_radio_sw_show(struct device
*dev
,
2848 struct device_attribute
*attr
,
2852 res
= hotkey_get_wlsw();
2856 /* Opportunistic update */
2857 tpacpi_rfk_update_hwblock_state((res
== TPACPI_RFK_RADIO_OFF
));
2859 return snprintf(buf
, PAGE_SIZE
, "%d\n",
2860 (res
== TPACPI_RFK_RADIO_OFF
) ? 0 : 1);
2863 static struct device_attribute dev_attr_hotkey_radio_sw
=
2864 __ATTR(hotkey_radio_sw
, S_IRUGO
, hotkey_radio_sw_show
, NULL
);
2866 static void hotkey_radio_sw_notify_change(void)
2868 if (tp_features
.hotkey_wlsw
)
2869 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2873 /* sysfs hotkey tablet mode (pollable) --------------------------------- */
2874 static ssize_t
hotkey_tablet_mode_show(struct device
*dev
,
2875 struct device_attribute
*attr
,
2879 res
= hotkey_get_tablet_mode(&s
);
2883 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!s
);
2886 static struct device_attribute dev_attr_hotkey_tablet_mode
=
2887 __ATTR(hotkey_tablet_mode
, S_IRUGO
, hotkey_tablet_mode_show
, NULL
);
2889 static void hotkey_tablet_mode_notify_change(void)
2891 if (tp_features
.hotkey_tablet
)
2892 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2893 "hotkey_tablet_mode");
2896 /* sysfs hotkey report_mode -------------------------------------------- */
2897 static ssize_t
hotkey_report_mode_show(struct device
*dev
,
2898 struct device_attribute
*attr
,
2901 return snprintf(buf
, PAGE_SIZE
, "%d\n",
2902 (hotkey_report_mode
!= 0) ? hotkey_report_mode
: 1);
2905 static struct device_attribute dev_attr_hotkey_report_mode
=
2906 __ATTR(hotkey_report_mode
, S_IRUGO
, hotkey_report_mode_show
, NULL
);
2908 /* sysfs wakeup reason (pollable) -------------------------------------- */
2909 static ssize_t
hotkey_wakeup_reason_show(struct device
*dev
,
2910 struct device_attribute
*attr
,
2913 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_wakeup_reason
);
2916 static struct device_attribute dev_attr_hotkey_wakeup_reason
=
2917 __ATTR(wakeup_reason
, S_IRUGO
, hotkey_wakeup_reason_show
, NULL
);
2919 static void hotkey_wakeup_reason_notify_change(void)
2921 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2925 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
2926 static ssize_t
hotkey_wakeup_hotunplug_complete_show(struct device
*dev
,
2927 struct device_attribute
*attr
,
2930 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_autosleep_ack
);
2933 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete
=
2934 __ATTR(wakeup_hotunplug_complete
, S_IRUGO
,
2935 hotkey_wakeup_hotunplug_complete_show
, NULL
);
2937 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
2939 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2940 "wakeup_hotunplug_complete");
2943 /* --------------------------------------------------------------------- */
2945 static struct attribute
*hotkey_attributes
[] __initdata
= {
2946 &dev_attr_hotkey_enable
.attr
,
2947 &dev_attr_hotkey_bios_enabled
.attr
,
2948 &dev_attr_hotkey_bios_mask
.attr
,
2949 &dev_attr_hotkey_report_mode
.attr
,
2950 &dev_attr_hotkey_wakeup_reason
.attr
,
2951 &dev_attr_hotkey_wakeup_hotunplug_complete
.attr
,
2952 &dev_attr_hotkey_mask
.attr
,
2953 &dev_attr_hotkey_all_mask
.attr
,
2954 &dev_attr_hotkey_recommended_mask
.attr
,
2955 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2956 &dev_attr_hotkey_source_mask
.attr
,
2957 &dev_attr_hotkey_poll_freq
.attr
,
2962 * Sync both the hw and sw blocking state of all switches
2964 static void tpacpi_send_radiosw_update(void)
2969 * We must sync all rfkill controllers *before* issuing any
2970 * rfkill input events, or we will race the rfkill core input
2973 * tpacpi_inputdev_send_mutex works as a syncronization point
2976 * We optimize to avoid numerous calls to hotkey_get_wlsw.
2979 wlsw
= hotkey_get_wlsw();
2981 /* Sync hw blocking state first if it is hw-blocked */
2982 if (wlsw
== TPACPI_RFK_RADIO_OFF
)
2983 tpacpi_rfk_update_hwblock_state(true);
2985 /* Sync sw blocking state */
2986 tpacpi_rfk_update_swstate_all();
2988 /* Sync hw blocking state last if it is hw-unblocked */
2989 if (wlsw
== TPACPI_RFK_RADIO_ON
)
2990 tpacpi_rfk_update_hwblock_state(false);
2992 /* Issue rfkill input event for WLSW switch */
2994 mutex_lock(&tpacpi_inputdev_send_mutex
);
2996 input_report_switch(tpacpi_inputdev
,
2997 SW_RFKILL_ALL
, (wlsw
> 0));
2998 input_sync(tpacpi_inputdev
);
3000 mutex_unlock(&tpacpi_inputdev_send_mutex
);
3004 * this can be unconditional, as we will poll state again
3005 * if userspace uses the notify to read data
3007 hotkey_radio_sw_notify_change();
3010 static void hotkey_exit(void)
3012 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3013 mutex_lock(&hotkey_mutex
);
3014 hotkey_poll_stop_sync();
3015 mutex_unlock(&hotkey_mutex
);
3018 if (hotkey_dev_attributes
)
3019 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
3021 kfree(hotkey_keycode_map
);
3023 dbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_HKEY
,
3024 "restoring original HKEY status and mask\n");
3025 /* yes, there is a bitwise or below, we want the
3026 * functions to be called even if one of them fail */
3027 if (((tp_features
.hotkey_mask
&&
3028 hotkey_mask_set(hotkey_orig_mask
)) |
3029 hotkey_status_set(false)) != 0)
3031 "failed to restore hot key mask "
3032 "to BIOS defaults\n");
3035 static void __init
hotkey_unmap(const unsigned int scancode
)
3037 if (hotkey_keycode_map
[scancode
] != KEY_RESERVED
) {
3038 clear_bit(hotkey_keycode_map
[scancode
],
3039 tpacpi_inputdev
->keybit
);
3040 hotkey_keycode_map
[scancode
] = KEY_RESERVED
;
3046 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3049 #define TPACPI_HK_Q_INIMASK 0x0001
3051 static const struct tpacpi_quirk tpacpi_hotkey_qtable
[] __initconst
= {
3052 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK
), /* 600E */
3053 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK
), /* 600E */
3054 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK
), /* 770, 770E, 770ED */
3055 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK
), /* A20m */
3056 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK
), /* A20p */
3057 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK
), /* A21e, A22e */
3058 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK
), /* A21e */
3059 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK
), /* A21m, A22m */
3060 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK
), /* A21p, A22p */
3061 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK
), /* A22e */
3062 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK
), /* A22m */
3063 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK
), /* A30/p (0) */
3064 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK
), /* R30 */
3065 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK
), /* R31 */
3066 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK
), /* T20 */
3067 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK
), /* T21 */
3068 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK
), /* T22 */
3069 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK
), /* X20, X21 */
3070 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK
), /* X22, X23, X24 */
3073 static int __init
hotkey_init(struct ibm_init_struct
*iibm
)
3075 /* Requirements for changing the default keymaps:
3077 * 1. Many of the keys are mapped to KEY_RESERVED for very
3078 * good reasons. Do not change them unless you have deep
3079 * knowledge on the IBM and Lenovo ThinkPad firmware for
3080 * the various ThinkPad models. The driver behaves
3081 * differently for KEY_RESERVED: such keys have their
3082 * hot key mask *unset* in mask_recommended, and also
3083 * in the initial hot key mask programmed into the
3084 * firmware at driver load time, which means the firm-
3085 * ware may react very differently if you change them to
3088 * 2. You must be subscribed to the linux-thinkpad and
3089 * ibm-acpi-devel mailing lists, and you should read the
3090 * list archives since 2007 if you want to change the
3091 * keymaps. This requirement exists so that you will
3092 * know the past history of problems with the thinkpad-
3093 * acpi driver keymaps, and also that you will be
3094 * listening to any bug reports;
3096 * 3. Do not send thinkpad-acpi specific patches directly to
3097 * for merging, *ever*. Send them to the linux-acpi
3098 * mailinglist for comments. Merging is to be done only
3099 * through acpi-test and the ACPI maintainer.
3101 * If the above is too much to ask, don't change the keymap.
3102 * Ask the thinkpad-acpi maintainer to do it, instead.
3104 static u16 ibm_keycode_map
[] __initdata
= {
3105 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3106 KEY_FN_F1
, KEY_FN_F2
, KEY_COFFEE
, KEY_SLEEP
,
3107 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
3108 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
3110 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
3111 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
3112 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
3113 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
3115 /* brightness: firmware always reacts to them */
3116 KEY_RESERVED
, /* 0x0F: FN+HOME (brightness up) */
3117 KEY_RESERVED
, /* 0x10: FN+END (brightness down) */
3119 /* Thinklight: firmware always react to it */
3120 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
3122 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
3123 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
3125 /* Volume: firmware always react to it and reprograms
3126 * the built-in *extra* mixer. Never map it to control
3127 * another mixer by default. */
3128 KEY_RESERVED
, /* 0x14: VOLUME UP */
3129 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
3130 KEY_RESERVED
, /* 0x16: MUTE */
3132 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
3134 /* (assignments unknown, please report if found) */
3135 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3136 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3138 static u16 lenovo_keycode_map
[] __initdata
= {
3139 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3140 KEY_FN_F1
, KEY_COFFEE
, KEY_BATTERY
, KEY_SLEEP
,
3141 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
3142 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
3144 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
3145 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
3146 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
3147 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
3149 /* These should be enabled --only-- when ACPI video
3150 * is disabled (i.e. in "vendor" mode), and are handled
3151 * in a special way by the init code */
3152 KEY_BRIGHTNESSUP
, /* 0x0F: FN+HOME (brightness up) */
3153 KEY_BRIGHTNESSDOWN
, /* 0x10: FN+END (brightness down) */
3155 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
3157 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
3158 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
3160 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3161 * react to it and reprograms the built-in *extra* mixer.
3162 * Never map it to control another mixer by default.
3164 * T60?, T61, R60?, R61: firmware and EC tries to send
3165 * these over the regular keyboard, so these are no-ops,
3166 * but there are still weird bugs re. MUTE, so do not
3167 * change unless you get test reports from all Lenovo
3168 * models. May cause the BIOS to interfere with the
3171 KEY_RESERVED
, /* 0x14: VOLUME UP */
3172 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
3173 KEY_RESERVED
, /* 0x16: MUTE */
3175 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
3177 /* (assignments unknown, please report if found) */
3178 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3179 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
3182 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
3183 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
3184 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
3190 unsigned long quirks
;
3192 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3193 "initializing hotkey subdriver\n");
3195 BUG_ON(!tpacpi_inputdev
);
3196 BUG_ON(tpacpi_inputdev
->open
!= NULL
||
3197 tpacpi_inputdev
->close
!= NULL
);
3199 TPACPI_ACPIHANDLE_INIT(hkey
);
3200 mutex_init(&hotkey_mutex
);
3202 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3203 mutex_init(&hotkey_thread_mutex
);
3204 mutex_init(&hotkey_thread_data_mutex
);
3207 /* hotkey not supported on 570 */
3208 tp_features
.hotkey
= hkey_handle
!= NULL
;
3210 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3212 str_supported(tp_features
.hotkey
));
3214 if (!tp_features
.hotkey
)
3217 quirks
= tpacpi_check_quirks(tpacpi_hotkey_qtable
,
3218 ARRAY_SIZE(tpacpi_hotkey_qtable
));
3220 tpacpi_disable_brightness_delay();
3222 /* MUST have enough space for all attributes to be added to
3223 * hotkey_dev_attributes */
3224 hotkey_dev_attributes
= create_attr_set(
3225 ARRAY_SIZE(hotkey_attributes
) + 2,
3227 if (!hotkey_dev_attributes
)
3229 res
= add_many_to_attr_set(hotkey_dev_attributes
,
3231 ARRAY_SIZE(hotkey_attributes
));
3235 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
3236 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3237 for HKEY interface version 0x100 */
3238 if (acpi_evalf(hkey_handle
, &hkeyv
, "MHKV", "qd")) {
3239 if ((hkeyv
>> 8) != 1) {
3240 printk(TPACPI_ERR
"unknown version of the "
3241 "HKEY interface: 0x%x\n", hkeyv
);
3242 printk(TPACPI_ERR
"please report this to %s\n",
3246 * MHKV 0x100 in A31, R40, R40e,
3247 * T4x, X31, and later
3249 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3250 "firmware HKEY interface version: 0x%x\n",
3253 /* Paranoia check AND init hotkey_all_mask */
3254 if (!acpi_evalf(hkey_handle
, &hotkey_all_mask
,
3257 "missing MHKA handler, "
3258 "please report this to %s\n",
3260 /* Fallback: pre-init for FN+F3,F4,F12 */
3261 hotkey_all_mask
= 0x080cU
;
3263 tp_features
.hotkey_mask
= 1;
3268 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3269 "hotkey masks are %s\n",
3270 str_supported(tp_features
.hotkey_mask
));
3272 /* Init hotkey_all_mask if not initialized yet */
3273 if (!tp_features
.hotkey_mask
&& !hotkey_all_mask
&&
3274 (quirks
& TPACPI_HK_Q_INIMASK
))
3275 hotkey_all_mask
= 0x080cU
; /* FN+F12, FN+F4, FN+F3 */
3277 /* Init hotkey_acpi_mask and hotkey_orig_mask */
3278 if (tp_features
.hotkey_mask
) {
3279 /* hotkey_source_mask *must* be zero for
3280 * the first hotkey_mask_get to return hotkey_orig_mask */
3281 res
= hotkey_mask_get();
3285 hotkey_orig_mask
= hotkey_acpi_mask
;
3287 hotkey_orig_mask
= hotkey_all_mask
;
3288 hotkey_acpi_mask
= hotkey_all_mask
;
3291 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3293 tp_features
.hotkey_wlsw
= 1;
3295 "radio switch emulation enabled\n");
3298 /* Not all thinkpads have a hardware radio switch */
3299 if (acpi_evalf(hkey_handle
, &status
, "WLSW", "qd")) {
3300 tp_features
.hotkey_wlsw
= 1;
3302 "radio switch found; radios are %s\n",
3303 enabled(status
, 0));
3305 if (tp_features
.hotkey_wlsw
)
3306 res
= add_to_attr_set(hotkey_dev_attributes
,
3307 &dev_attr_hotkey_radio_sw
.attr
);
3309 /* For X41t, X60t, X61t Tablets... */
3310 if (!res
&& acpi_evalf(hkey_handle
, &status
, "MHKG", "qd")) {
3311 tp_features
.hotkey_tablet
= 1;
3313 "possible tablet mode switch found; "
3314 "ThinkPad in %s mode\n",
3315 (status
& TP_HOTKEY_TABLET_MASK
)?
3316 "tablet" : "laptop");
3317 res
= add_to_attr_set(hotkey_dev_attributes
,
3318 &dev_attr_hotkey_tablet_mode
.attr
);
3322 res
= register_attr_set_with_sysfs(
3323 hotkey_dev_attributes
,
3324 &tpacpi_pdev
->dev
.kobj
);
3328 /* Set up key map */
3330 hotkey_keycode_map
= kmalloc(TPACPI_HOTKEY_MAP_SIZE
,
3332 if (!hotkey_keycode_map
) {
3334 "failed to allocate memory for key map\n");
3339 if (thinkpad_id
.vendor
== PCI_VENDOR_ID_LENOVO
) {
3340 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3341 "using Lenovo default hot key map\n");
3342 memcpy(hotkey_keycode_map
, &lenovo_keycode_map
,
3343 TPACPI_HOTKEY_MAP_SIZE
);
3345 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3346 "using IBM default hot key map\n");
3347 memcpy(hotkey_keycode_map
, &ibm_keycode_map
,
3348 TPACPI_HOTKEY_MAP_SIZE
);
3351 set_bit(EV_KEY
, tpacpi_inputdev
->evbit
);
3352 set_bit(EV_MSC
, tpacpi_inputdev
->evbit
);
3353 set_bit(MSC_SCAN
, tpacpi_inputdev
->mscbit
);
3354 tpacpi_inputdev
->keycodesize
= TPACPI_HOTKEY_MAP_TYPESIZE
;
3355 tpacpi_inputdev
->keycodemax
= TPACPI_HOTKEY_MAP_LEN
;
3356 tpacpi_inputdev
->keycode
= hotkey_keycode_map
;
3357 for (i
= 0; i
< TPACPI_HOTKEY_MAP_LEN
; i
++) {
3358 if (hotkey_keycode_map
[i
] != KEY_RESERVED
) {
3359 set_bit(hotkey_keycode_map
[i
],
3360 tpacpi_inputdev
->keybit
);
3362 if (i
< sizeof(hotkey_reserved_mask
)*8)
3363 hotkey_reserved_mask
|= 1 << i
;
3367 if (tp_features
.hotkey_wlsw
) {
3368 set_bit(EV_SW
, tpacpi_inputdev
->evbit
);
3369 set_bit(SW_RFKILL_ALL
, tpacpi_inputdev
->swbit
);
3371 if (tp_features
.hotkey_tablet
) {
3372 set_bit(EV_SW
, tpacpi_inputdev
->evbit
);
3373 set_bit(SW_TABLET_MODE
, tpacpi_inputdev
->swbit
);
3376 /* Do not issue duplicate brightness change events to
3378 if (!tp_features
.bright_acpimode
)
3379 /* update bright_acpimode... */
3380 tpacpi_check_std_acpi_brightness_support();
3382 if (tp_features
.bright_acpimode
&& acpi_video_backlight_support()) {
3384 "This ThinkPad has standard ACPI backlight "
3385 "brightness control, supported by the ACPI "
3387 printk(TPACPI_NOTICE
3388 "Disabling thinkpad-acpi brightness events "
3391 /* Disable brightness up/down on Lenovo thinkpads when
3392 * ACPI is handling them, otherwise it is plain impossible
3393 * for userspace to do something even remotely sane */
3394 hotkey_reserved_mask
|=
3395 (1 << TP_ACPI_HOTKEYSCAN_FNHOME
)
3396 | (1 << TP_ACPI_HOTKEYSCAN_FNEND
);
3397 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME
);
3398 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND
);
3401 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3402 hotkey_source_mask
= TPACPI_HKEY_NVRAM_GOOD_MASK
3404 & ~hotkey_reserved_mask
;
3406 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3407 "hotkey source mask 0x%08x, polling freq %u\n",
3408 hotkey_source_mask
, hotkey_poll_freq
);
3411 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3412 "enabling firmware HKEY event interface...\n");
3413 res
= hotkey_status_set(true);
3418 res
= hotkey_mask_set(((hotkey_all_mask
& ~hotkey_reserved_mask
)
3419 | hotkey_driver_mask
)
3420 & ~hotkey_source_mask
);
3421 if (res
< 0 && res
!= -ENXIO
) {
3425 hotkey_user_mask
= (hotkey_acpi_mask
| hotkey_source_mask
)
3426 & ~hotkey_reserved_mask
;
3427 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3428 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3429 hotkey_user_mask
, hotkey_acpi_mask
, hotkey_source_mask
);
3431 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
3432 "legacy ibm/hotkey event reporting over procfs %s\n",
3433 (hotkey_report_mode
< 2) ?
3434 "enabled" : "disabled");
3436 tpacpi_inputdev
->open
= &hotkey_inputdev_open
;
3437 tpacpi_inputdev
->close
= &hotkey_inputdev_close
;
3439 hotkey_poll_setup_safe(true);
3440 tpacpi_send_radiosw_update();
3441 tpacpi_input_send_tabletsw();
3446 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
3447 hotkey_dev_attributes
= NULL
;
3449 return (res
< 0)? res
: 1;
3452 static bool hotkey_notify_hotkey(const u32 hkey
,
3454 bool *ignore_acpi_ev
)
3456 /* 0x1000-0x1FFF: key presses */
3457 unsigned int scancode
= hkey
& 0xfff;
3458 *send_acpi_ev
= true;
3459 *ignore_acpi_ev
= false;
3461 if (scancode
> 0 && scancode
< 0x21) {
3463 if (!(hotkey_source_mask
& (1 << scancode
))) {
3464 tpacpi_input_send_key_masked(scancode
);
3465 *send_acpi_ev
= false;
3467 *ignore_acpi_ev
= true;
3474 static bool hotkey_notify_wakeup(const u32 hkey
,
3476 bool *ignore_acpi_ev
)
3478 /* 0x2000-0x2FFF: Wakeup reason */
3479 *send_acpi_ev
= true;
3480 *ignore_acpi_ev
= false;
3483 case TP_HKEY_EV_WKUP_S3_UNDOCK
: /* suspend, undock */
3484 case TP_HKEY_EV_WKUP_S4_UNDOCK
: /* hibernation, undock */
3485 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_UNDOCK
;
3486 *ignore_acpi_ev
= true;
3489 case TP_HKEY_EV_WKUP_S3_BAYEJ
: /* suspend, bay eject */
3490 case TP_HKEY_EV_WKUP_S4_BAYEJ
: /* hibernation, bay eject */
3491 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_BAYEJ
;
3492 *ignore_acpi_ev
= true;
3495 case TP_HKEY_EV_WKUP_S3_BATLOW
: /* Battery on critical low level/S3 */
3496 case TP_HKEY_EV_WKUP_S4_BATLOW
: /* Battery on critical low level/S4 */
3498 "EMERGENCY WAKEUP: battery almost empty\n");
3499 /* how to auto-heal: */
3500 /* 2313: woke up from S3, go to S4/S5 */
3501 /* 2413: woke up from S4, go to S5 */
3508 if (hotkey_wakeup_reason
!= TP_ACPI_WAKEUP_NONE
) {
3510 "woke up due to a hot-unplug "
3512 hotkey_wakeup_reason_notify_change();
3517 static bool hotkey_notify_usrevent(const u32 hkey
,
3519 bool *ignore_acpi_ev
)
3521 /* 0x5000-0x5FFF: human interface helpers */
3522 *send_acpi_ev
= true;
3523 *ignore_acpi_ev
= false;
3526 case TP_HKEY_EV_PEN_INSERTED
: /* X61t: tablet pen inserted into bay */
3527 case TP_HKEY_EV_PEN_REMOVED
: /* X61t: tablet pen removed from bay */
3530 case TP_HKEY_EV_TABLET_TABLET
: /* X41t-X61t: tablet mode */
3531 case TP_HKEY_EV_TABLET_NOTEBOOK
: /* X41t-X61t: normal mode */
3532 tpacpi_input_send_tabletsw();
3533 hotkey_tablet_mode_notify_change();
3534 *send_acpi_ev
= false;
3537 case TP_HKEY_EV_LID_CLOSE
: /* Lid closed */
3538 case TP_HKEY_EV_LID_OPEN
: /* Lid opened */
3539 case TP_HKEY_EV_BRGHT_CHANGED
: /* brightness changed */
3540 /* do not propagate these events */
3541 *ignore_acpi_ev
= true;
3549 static bool hotkey_notify_thermal(const u32 hkey
,
3551 bool *ignore_acpi_ev
)
3553 /* 0x6000-0x6FFF: thermal alarms */
3554 *send_acpi_ev
= true;
3555 *ignore_acpi_ev
= false;
3558 case TP_HKEY_EV_ALARM_BAT_HOT
:
3560 "THERMAL ALARM: battery is too hot!\n");
3561 /* recommended action: warn user through gui */
3563 case TP_HKEY_EV_ALARM_BAT_XHOT
:
3565 "THERMAL EMERGENCY: battery is extremely hot!\n");
3566 /* recommended action: immediate sleep/hibernate */
3568 case TP_HKEY_EV_ALARM_SENSOR_HOT
:
3571 "a sensor reports something is too hot!\n");
3572 /* recommended action: warn user through gui, that */
3573 /* some internal component is too hot */
3575 case TP_HKEY_EV_ALARM_SENSOR_XHOT
:
3577 "THERMAL EMERGENCY: "
3578 "a sensor reports something is extremely hot!\n");
3579 /* recommended action: immediate sleep/hibernate */
3581 case TP_HKEY_EV_THM_TABLE_CHANGED
:
3583 "EC reports that Thermal Table has changed\n");
3584 /* recommended action: do nothing, we don't have
3585 * Lenovo ATM information */
3589 "THERMAL ALERT: unknown thermal alarm received\n");
3594 static void hotkey_notify(struct ibm_struct
*ibm
, u32 event
)
3598 bool ignore_acpi_ev
;
3601 if (event
!= 0x80) {
3603 "unknown HKEY notification event %d\n", event
);
3604 /* forward it to userspace, maybe it knows how to handle it */
3605 acpi_bus_generate_netlink_event(
3606 ibm
->acpi
->device
->pnp
.device_class
,
3607 dev_name(&ibm
->acpi
->device
->dev
),
3613 if (!acpi_evalf(hkey_handle
, &hkey
, "MHKP", "d")) {
3614 printk(TPACPI_ERR
"failed to retrieve HKEY event\n");
3623 send_acpi_ev
= true;
3624 ignore_acpi_ev
= false;
3626 switch (hkey
>> 12) {
3628 /* 0x1000-0x1FFF: key presses */
3629 known_ev
= hotkey_notify_hotkey(hkey
, &send_acpi_ev
,
3633 /* 0x2000-0x2FFF: Wakeup reason */
3634 known_ev
= hotkey_notify_wakeup(hkey
, &send_acpi_ev
,
3638 /* 0x3000-0x3FFF: bay-related wakeups */
3639 if (hkey
== TP_HKEY_EV_BAYEJ_ACK
) {
3640 hotkey_autosleep_ack
= 1;
3643 hotkey_wakeup_hotunplug_complete_notify_change();
3650 /* 0x4000-0x4FFF: dock-related wakeups */
3651 if (hkey
== TP_HKEY_EV_UNDOCK_ACK
) {
3652 hotkey_autosleep_ack
= 1;
3655 hotkey_wakeup_hotunplug_complete_notify_change();
3662 /* 0x5000-0x5FFF: human interface helpers */
3663 known_ev
= hotkey_notify_usrevent(hkey
, &send_acpi_ev
,
3667 /* 0x6000-0x6FFF: thermal alarms */
3668 known_ev
= hotkey_notify_thermal(hkey
, &send_acpi_ev
,
3672 /* 0x7000-0x7FFF: misc */
3673 if (tp_features
.hotkey_wlsw
&&
3674 hkey
== TP_HKEY_EV_RFKILL_CHANGED
) {
3675 tpacpi_send_radiosw_update();
3680 /* fallthrough to default */
3685 printk(TPACPI_NOTICE
3686 "unhandled HKEY event 0x%04x\n", hkey
);
3687 printk(TPACPI_NOTICE
3688 "please report the conditions when this "
3689 "event happened to %s\n", TPACPI_MAIL
);
3693 if (!ignore_acpi_ev
&&
3694 (send_acpi_ev
|| hotkey_report_mode
< 2)) {
3695 acpi_bus_generate_proc_event(ibm
->acpi
->device
,
3699 /* netlink events */
3700 if (!ignore_acpi_ev
&& send_acpi_ev
) {
3701 acpi_bus_generate_netlink_event(
3702 ibm
->acpi
->device
->pnp
.device_class
,
3703 dev_name(&ibm
->acpi
->device
->dev
),
3709 static void hotkey_suspend(pm_message_t state
)
3711 /* Do these on suspend, we get the events on early resume! */
3712 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_NONE
;
3713 hotkey_autosleep_ack
= 0;
3716 static void hotkey_resume(void)
3718 tpacpi_disable_brightness_delay();
3720 if (hotkey_status_set(true) < 0 ||
3721 hotkey_mask_set(hotkey_acpi_mask
) < 0)
3723 "error while attempting to reset the event "
3724 "firmware interface\n");
3726 tpacpi_send_radiosw_update();
3727 hotkey_tablet_mode_notify_change();
3728 hotkey_wakeup_reason_notify_change();
3729 hotkey_wakeup_hotunplug_complete_notify_change();
3730 hotkey_poll_setup_safe(false);
3733 /* procfs -------------------------------------------------------------- */
3734 static int hotkey_read(char *p
)
3739 if (!tp_features
.hotkey
) {
3740 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
3744 if (mutex_lock_killable(&hotkey_mutex
))
3745 return -ERESTARTSYS
;
3746 res
= hotkey_status_get(&status
);
3748 res
= hotkey_mask_get();
3749 mutex_unlock(&hotkey_mutex
);
3753 len
+= sprintf(p
+ len
, "status:\t\t%s\n", enabled(status
, 0));
3754 if (hotkey_all_mask
) {
3755 len
+= sprintf(p
+ len
, "mask:\t\t0x%08x\n", hotkey_user_mask
);
3756 len
+= sprintf(p
+ len
,
3757 "commands:\tenable, disable, reset, <mask>\n");
3759 len
+= sprintf(p
+ len
, "mask:\t\tnot supported\n");
3760 len
+= sprintf(p
+ len
, "commands:\tenable, disable, reset\n");
3766 static void hotkey_enabledisable_warn(bool enable
)
3768 tpacpi_log_usertask("procfs hotkey enable/disable");
3769 if (!WARN((tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
|| !enable
),
3771 "hotkey enable/disable functionality has been "
3772 "removed from the driver. Hotkeys are always "
3775 "Please remove the hotkey=enable module "
3776 "parameter, it is deprecated. Hotkeys are always "
3780 static int hotkey_write(char *buf
)
3786 if (!tp_features
.hotkey
)
3789 if (mutex_lock_killable(&hotkey_mutex
))
3790 return -ERESTARTSYS
;
3792 mask
= hotkey_user_mask
;
3795 while ((cmd
= next_cmd(&buf
))) {
3796 if (strlencmp(cmd
, "enable") == 0) {
3797 hotkey_enabledisable_warn(1);
3798 } else if (strlencmp(cmd
, "disable") == 0) {
3799 hotkey_enabledisable_warn(0);
3801 } else if (strlencmp(cmd
, "reset") == 0) {
3802 mask
= (hotkey_all_mask
| hotkey_source_mask
)
3803 & ~hotkey_reserved_mask
;
3804 } else if (sscanf(cmd
, "0x%x", &mask
) == 1) {
3806 } else if (sscanf(cmd
, "%x", &mask
) == 1) {
3815 tpacpi_disclose_usertask("procfs hotkey",
3816 "set mask to 0x%08x\n", mask
);
3817 res
= hotkey_user_mask_set(mask
);
3821 mutex_unlock(&hotkey_mutex
);
3825 static const struct acpi_device_id ibm_htk_device_ids
[] = {
3826 {TPACPI_ACPI_HKEY_HID
, 0},
3830 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
= {
3831 .hid
= ibm_htk_device_ids
,
3832 .notify
= hotkey_notify
,
3833 .handle
= &hkey_handle
,
3834 .type
= ACPI_DEVICE_NOTIFY
,
3837 static struct ibm_struct hotkey_driver_data
= {
3839 .read
= hotkey_read
,
3840 .write
= hotkey_write
,
3841 .exit
= hotkey_exit
,
3842 .resume
= hotkey_resume
,
3843 .suspend
= hotkey_suspend
,
3844 .acpi
= &ibm_hotkey_acpidriver
,
3847 /*************************************************************************
3848 * Bluetooth subdriver
3852 /* ACPI GBDC/SBDC bits */
3853 TP_ACPI_BLUETOOTH_HWPRESENT
= 0x01, /* Bluetooth hw available */
3854 TP_ACPI_BLUETOOTH_RADIOSSW
= 0x02, /* Bluetooth radio enabled */
3855 TP_ACPI_BLUETOOTH_RESUMECTRL
= 0x04, /* Bluetooth state at resume:
3860 /* ACPI \BLTH commands */
3861 TP_ACPI_BLTH_GET_ULTRAPORT_ID
= 0x00, /* Get Ultraport BT ID */
3862 TP_ACPI_BLTH_GET_PWR_ON_RESUME
= 0x01, /* Get power-on-resume state */
3863 TP_ACPI_BLTH_PWR_ON_ON_RESUME
= 0x02, /* Resume powered on */
3864 TP_ACPI_BLTH_PWR_OFF_ON_RESUME
= 0x03, /* Resume powered off */
3865 TP_ACPI_BLTH_SAVE_STATE
= 0x05, /* Save state for S4/S5 */
3868 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3870 static void bluetooth_suspend(pm_message_t state
)
3872 /* Try to make sure radio will resume powered off */
3873 if (!acpi_evalf(NULL
, NULL
, "\\BLTH", "vd",
3874 TP_ACPI_BLTH_PWR_OFF_ON_RESUME
))
3875 vdbg_printk(TPACPI_DBG_RFKILL
,
3876 "bluetooth power down on resume request failed\n");
3879 static int bluetooth_get_status(void)
3883 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3884 if (dbg_bluetoothemul
)
3885 return (tpacpi_bluetooth_emulstate
) ?
3886 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
3889 if (!acpi_evalf(hkey_handle
, &status
, "GBDC", "d"))
3892 return ((status
& TP_ACPI_BLUETOOTH_RADIOSSW
) != 0) ?
3893 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
3896 static int bluetooth_set_status(enum tpacpi_rfkill_state state
)
3900 vdbg_printk(TPACPI_DBG_RFKILL
,
3901 "will attempt to %s bluetooth\n",
3902 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
3904 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3905 if (dbg_bluetoothemul
) {
3906 tpacpi_bluetooth_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
3911 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
3912 if (state
== TPACPI_RFK_RADIO_ON
)
3913 status
= TP_ACPI_BLUETOOTH_RADIOSSW
;
3917 if (!acpi_evalf(hkey_handle
, NULL
, "SBDC", "vd", status
))
3923 /* sysfs bluetooth enable ---------------------------------------------- */
3924 static ssize_t
bluetooth_enable_show(struct device
*dev
,
3925 struct device_attribute
*attr
,
3928 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID
,
3932 static ssize_t
bluetooth_enable_store(struct device
*dev
,
3933 struct device_attribute
*attr
,
3934 const char *buf
, size_t count
)
3936 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID
,
3940 static struct device_attribute dev_attr_bluetooth_enable
=
3941 __ATTR(bluetooth_enable
, S_IWUSR
| S_IRUGO
,
3942 bluetooth_enable_show
, bluetooth_enable_store
);
3944 /* --------------------------------------------------------------------- */
3946 static struct attribute
*bluetooth_attributes
[] = {
3947 &dev_attr_bluetooth_enable
.attr
,
3951 static const struct attribute_group bluetooth_attr_group
= {
3952 .attrs
= bluetooth_attributes
,
3955 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops
= {
3956 .get_status
= bluetooth_get_status
,
3957 .set_status
= bluetooth_set_status
,
3960 static void bluetooth_shutdown(void)
3962 /* Order firmware to save current state to NVRAM */
3963 if (!acpi_evalf(NULL
, NULL
, "\\BLTH", "vd",
3964 TP_ACPI_BLTH_SAVE_STATE
))
3965 printk(TPACPI_NOTICE
3966 "failed to save bluetooth state to NVRAM\n");
3968 vdbg_printk(TPACPI_DBG_RFKILL
,
3969 "bluestooth state saved to NVRAM\n");
3972 static void bluetooth_exit(void)
3974 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
3975 &bluetooth_attr_group
);
3977 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
);
3979 bluetooth_shutdown();
3982 static int __init
bluetooth_init(struct ibm_init_struct
*iibm
)
3987 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
3988 "initializing bluetooth subdriver\n");
3990 TPACPI_ACPIHANDLE_INIT(hkey
);
3992 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3993 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
3994 tp_features
.bluetooth
= hkey_handle
&&
3995 acpi_evalf(hkey_handle
, &status
, "GBDC", "qd");
3997 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
3998 "bluetooth is %s, status 0x%02x\n",
3999 str_supported(tp_features
.bluetooth
),
4002 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4003 if (dbg_bluetoothemul
) {
4004 tp_features
.bluetooth
= 1;
4006 "bluetooth switch emulation enabled\n");
4009 if (tp_features
.bluetooth
&&
4010 !(status
& TP_ACPI_BLUETOOTH_HWPRESENT
)) {
4011 /* no bluetooth hardware present in system */
4012 tp_features
.bluetooth
= 0;
4013 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4014 "bluetooth hardware not installed\n");
4017 if (!tp_features
.bluetooth
)
4020 res
= tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
,
4021 &bluetooth_tprfk_ops
,
4022 RFKILL_TYPE_BLUETOOTH
,
4023 TPACPI_RFK_BLUETOOTH_SW_NAME
,
4028 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
4029 &bluetooth_attr_group
);
4031 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
);
4038 /* procfs -------------------------------------------------------------- */
4039 static int bluetooth_read(char *p
)
4041 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID
, p
);
4044 static int bluetooth_write(char *buf
)
4046 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID
, buf
);
4049 static struct ibm_struct bluetooth_driver_data
= {
4050 .name
= "bluetooth",
4051 .read
= bluetooth_read
,
4052 .write
= bluetooth_write
,
4053 .exit
= bluetooth_exit
,
4054 .suspend
= bluetooth_suspend
,
4055 .shutdown
= bluetooth_shutdown
,
4058 /*************************************************************************
4063 /* ACPI GWAN/SWAN bits */
4064 TP_ACPI_WANCARD_HWPRESENT
= 0x01, /* Wan hw available */
4065 TP_ACPI_WANCARD_RADIOSSW
= 0x02, /* Wan radio enabled */
4066 TP_ACPI_WANCARD_RESUMECTRL
= 0x04, /* Wan state at resume:
4070 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4072 static void wan_suspend(pm_message_t state
)
4074 /* Try to make sure radio will resume powered off */
4075 if (!acpi_evalf(NULL
, NULL
, "\\WGSV", "qvd",
4076 TP_ACPI_WGSV_PWR_OFF_ON_RESUME
))
4077 vdbg_printk(TPACPI_DBG_RFKILL
,
4078 "WWAN power down on resume request failed\n");
4081 static int wan_get_status(void)
4085 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4087 return (tpacpi_wwan_emulstate
) ?
4088 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4091 if (!acpi_evalf(hkey_handle
, &status
, "GWAN", "d"))
4094 return ((status
& TP_ACPI_WANCARD_RADIOSSW
) != 0) ?
4095 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4098 static int wan_set_status(enum tpacpi_rfkill_state state
)
4102 vdbg_printk(TPACPI_DBG_RFKILL
,
4103 "will attempt to %s wwan\n",
4104 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
4106 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4108 tpacpi_wwan_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
4113 /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
4114 if (state
== TPACPI_RFK_RADIO_ON
)
4115 status
= TP_ACPI_WANCARD_RADIOSSW
;
4119 if (!acpi_evalf(hkey_handle
, NULL
, "SWAN", "vd", status
))
4125 /* sysfs wan enable ---------------------------------------------------- */
4126 static ssize_t
wan_enable_show(struct device
*dev
,
4127 struct device_attribute
*attr
,
4130 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID
,
4134 static ssize_t
wan_enable_store(struct device
*dev
,
4135 struct device_attribute
*attr
,
4136 const char *buf
, size_t count
)
4138 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID
,
4142 static struct device_attribute dev_attr_wan_enable
=
4143 __ATTR(wwan_enable
, S_IWUSR
| S_IRUGO
,
4144 wan_enable_show
, wan_enable_store
);
4146 /* --------------------------------------------------------------------- */
4148 static struct attribute
*wan_attributes
[] = {
4149 &dev_attr_wan_enable
.attr
,
4153 static const struct attribute_group wan_attr_group
= {
4154 .attrs
= wan_attributes
,
4157 static const struct tpacpi_rfk_ops wan_tprfk_ops
= {
4158 .get_status
= wan_get_status
,
4159 .set_status
= wan_set_status
,
4162 static void wan_shutdown(void)
4164 /* Order firmware to save current state to NVRAM */
4165 if (!acpi_evalf(NULL
, NULL
, "\\WGSV", "vd",
4166 TP_ACPI_WGSV_SAVE_STATE
))
4167 printk(TPACPI_NOTICE
4168 "failed to save WWAN state to NVRAM\n");
4170 vdbg_printk(TPACPI_DBG_RFKILL
,
4171 "WWAN state saved to NVRAM\n");
4174 static void wan_exit(void)
4176 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
4179 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID
);
4184 static int __init
wan_init(struct ibm_init_struct
*iibm
)
4189 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4190 "initializing wan subdriver\n");
4192 TPACPI_ACPIHANDLE_INIT(hkey
);
4194 tp_features
.wan
= hkey_handle
&&
4195 acpi_evalf(hkey_handle
, &status
, "GWAN", "qd");
4197 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4198 "wan is %s, status 0x%02x\n",
4199 str_supported(tp_features
.wan
),
4202 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4204 tp_features
.wan
= 1;
4206 "wwan switch emulation enabled\n");
4209 if (tp_features
.wan
&&
4210 !(status
& TP_ACPI_WANCARD_HWPRESENT
)) {
4211 /* no wan hardware present in system */
4212 tp_features
.wan
= 0;
4213 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4214 "wan hardware not installed\n");
4217 if (!tp_features
.wan
)
4220 res
= tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID
,
4223 TPACPI_RFK_WWAN_SW_NAME
,
4228 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
4232 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID
);
4239 /* procfs -------------------------------------------------------------- */
4240 static int wan_read(char *p
)
4242 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID
, p
);
4245 static int wan_write(char *buf
)
4247 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID
, buf
);
4250 static struct ibm_struct wan_driver_data
= {
4255 .suspend
= wan_suspend
,
4256 .shutdown
= wan_shutdown
,
4259 /*************************************************************************
4264 /* ACPI GUWB/SUWB bits */
4265 TP_ACPI_UWB_HWPRESENT
= 0x01, /* UWB hw available */
4266 TP_ACPI_UWB_RADIOSSW
= 0x02, /* UWB radio enabled */
4269 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4271 static int uwb_get_status(void)
4275 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4277 return (tpacpi_uwb_emulstate
) ?
4278 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4281 if (!acpi_evalf(hkey_handle
, &status
, "GUWB", "d"))
4284 return ((status
& TP_ACPI_UWB_RADIOSSW
) != 0) ?
4285 TPACPI_RFK_RADIO_ON
: TPACPI_RFK_RADIO_OFF
;
4288 static int uwb_set_status(enum tpacpi_rfkill_state state
)
4292 vdbg_printk(TPACPI_DBG_RFKILL
,
4293 "will attempt to %s UWB\n",
4294 (state
== TPACPI_RFK_RADIO_ON
) ? "enable" : "disable");
4296 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4298 tpacpi_uwb_emulstate
= (state
== TPACPI_RFK_RADIO_ON
);
4303 if (state
== TPACPI_RFK_RADIO_ON
)
4304 status
= TP_ACPI_UWB_RADIOSSW
;
4308 if (!acpi_evalf(hkey_handle
, NULL
, "SUWB", "vd", status
))
4314 /* --------------------------------------------------------------------- */
4316 static const struct tpacpi_rfk_ops uwb_tprfk_ops
= {
4317 .get_status
= uwb_get_status
,
4318 .set_status
= uwb_set_status
,
4321 static void uwb_exit(void)
4323 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID
);
4326 static int __init
uwb_init(struct ibm_init_struct
*iibm
)
4331 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4332 "initializing uwb subdriver\n");
4334 TPACPI_ACPIHANDLE_INIT(hkey
);
4336 tp_features
.uwb
= hkey_handle
&&
4337 acpi_evalf(hkey_handle
, &status
, "GUWB", "qd");
4339 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
4340 "uwb is %s, status 0x%02x\n",
4341 str_supported(tp_features
.uwb
),
4344 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4346 tp_features
.uwb
= 1;
4348 "uwb switch emulation enabled\n");
4351 if (tp_features
.uwb
&&
4352 !(status
& TP_ACPI_UWB_HWPRESENT
)) {
4353 /* no uwb hardware present in system */
4354 tp_features
.uwb
= 0;
4355 dbg_printk(TPACPI_DBG_INIT
,
4356 "uwb hardware not installed\n");
4359 if (!tp_features
.uwb
)
4362 res
= tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID
,
4365 TPACPI_RFK_UWB_SW_NAME
,
4370 static struct ibm_struct uwb_driver_data
= {
4373 .flags
.experimental
= 1,
4376 /*************************************************************************
4380 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
4382 enum video_access_mode
{
4383 TPACPI_VIDEO_NONE
= 0,
4384 TPACPI_VIDEO_570
, /* 570 */
4385 TPACPI_VIDEO_770
, /* 600e/x, 770e, 770x */
4386 TPACPI_VIDEO_NEW
, /* all others */
4389 enum { /* video status flags, based on VIDEO_570 */
4390 TP_ACPI_VIDEO_S_LCD
= 0x01, /* LCD output enabled */
4391 TP_ACPI_VIDEO_S_CRT
= 0x02, /* CRT output enabled */
4392 TP_ACPI_VIDEO_S_DVI
= 0x08, /* DVI output enabled */
4395 enum { /* TPACPI_VIDEO_570 constants */
4396 TP_ACPI_VIDEO_570_PHSCMD
= 0x87, /* unknown magic constant :( */
4397 TP_ACPI_VIDEO_570_PHSMASK
= 0x03, /* PHS bits that map to
4398 * video_status_flags */
4399 TP_ACPI_VIDEO_570_PHS2CMD
= 0x8b, /* unknown magic constant :( */
4400 TP_ACPI_VIDEO_570_PHS2SET
= 0x80, /* unknown magic constant :( */
4403 static enum video_access_mode video_supported
;
4404 static int video_orig_autosw
;
4406 static int video_autosw_get(void);
4407 static int video_autosw_set(int enable
);
4409 TPACPI_HANDLE(vid2
, root
, "\\_SB.PCI0.AGPB.VID"); /* G41 */
4411 static int __init
video_init(struct ibm_init_struct
*iibm
)
4415 vdbg_printk(TPACPI_DBG_INIT
, "initializing video subdriver\n");
4417 TPACPI_ACPIHANDLE_INIT(vid
);
4418 TPACPI_ACPIHANDLE_INIT(vid2
);
4420 if (vid2_handle
&& acpi_evalf(NULL
, &ivga
, "\\IVGA", "d") && ivga
)
4421 /* G41, assume IVGA doesn't change */
4422 vid_handle
= vid2_handle
;
4425 /* video switching not supported on R30, R31 */
4426 video_supported
= TPACPI_VIDEO_NONE
;
4427 else if (acpi_evalf(vid_handle
, &video_orig_autosw
, "SWIT", "qd"))
4429 video_supported
= TPACPI_VIDEO_570
;
4430 else if (acpi_evalf(vid_handle
, &video_orig_autosw
, "^VADL", "qd"))
4431 /* 600e/x, 770e, 770x */
4432 video_supported
= TPACPI_VIDEO_770
;
4435 video_supported
= TPACPI_VIDEO_NEW
;
4437 vdbg_printk(TPACPI_DBG_INIT
, "video is %s, mode %d\n",
4438 str_supported(video_supported
!= TPACPI_VIDEO_NONE
),
4441 return (video_supported
!= TPACPI_VIDEO_NONE
)? 0 : 1;
4444 static void video_exit(void)
4446 dbg_printk(TPACPI_DBG_EXIT
,
4447 "restoring original video autoswitch mode\n");
4448 if (video_autosw_set(video_orig_autosw
))
4449 printk(TPACPI_ERR
"error while trying to restore original "
4450 "video autoswitch mode\n");
4453 static int video_outputsw_get(void)
4458 switch (video_supported
) {
4459 case TPACPI_VIDEO_570
:
4460 if (!acpi_evalf(NULL
, &i
, "\\_SB.PHS", "dd",
4461 TP_ACPI_VIDEO_570_PHSCMD
))
4463 status
= i
& TP_ACPI_VIDEO_570_PHSMASK
;
4465 case TPACPI_VIDEO_770
:
4466 if (!acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
4469 status
|= TP_ACPI_VIDEO_S_LCD
;
4470 if (!acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
4473 status
|= TP_ACPI_VIDEO_S_CRT
;
4475 case TPACPI_VIDEO_NEW
:
4476 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 1) ||
4477 !acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
4480 status
|= TP_ACPI_VIDEO_S_CRT
;
4482 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0) ||
4483 !acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
4486 status
|= TP_ACPI_VIDEO_S_LCD
;
4487 if (!acpi_evalf(NULL
, &i
, "\\VCDD", "d"))
4490 status
|= TP_ACPI_VIDEO_S_DVI
;
4499 static int video_outputsw_set(int status
)
4504 switch (video_supported
) {
4505 case TPACPI_VIDEO_570
:
4506 res
= acpi_evalf(NULL
, NULL
,
4507 "\\_SB.PHS2", "vdd",
4508 TP_ACPI_VIDEO_570_PHS2CMD
,
4509 status
| TP_ACPI_VIDEO_570_PHS2SET
);
4511 case TPACPI_VIDEO_770
:
4512 autosw
= video_autosw_get();
4516 res
= video_autosw_set(1);
4519 res
= acpi_evalf(vid_handle
, NULL
,
4520 "ASWT", "vdd", status
* 0x100, 0);
4521 if (!autosw
&& video_autosw_set(autosw
)) {
4523 "video auto-switch left enabled due to error\n");
4527 case TPACPI_VIDEO_NEW
:
4528 res
= acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0x80) &&
4529 acpi_evalf(NULL
, NULL
, "\\VSDS", "vdd", status
, 1);
4535 return (res
)? 0 : -EIO
;
4538 static int video_autosw_get(void)
4542 switch (video_supported
) {
4543 case TPACPI_VIDEO_570
:
4544 if (!acpi_evalf(vid_handle
, &autosw
, "SWIT", "d"))
4547 case TPACPI_VIDEO_770
:
4548 case TPACPI_VIDEO_NEW
:
4549 if (!acpi_evalf(vid_handle
, &autosw
, "^VDEE", "d"))
4559 static int video_autosw_set(int enable
)
4561 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", (enable
)? 1 : 0))
4566 static int video_outputsw_cycle(void)
4568 int autosw
= video_autosw_get();
4574 switch (video_supported
) {
4575 case TPACPI_VIDEO_570
:
4576 res
= video_autosw_set(1);
4579 res
= acpi_evalf(ec_handle
, NULL
, "_Q16", "v");
4581 case TPACPI_VIDEO_770
:
4582 case TPACPI_VIDEO_NEW
:
4583 res
= video_autosw_set(1);
4586 res
= acpi_evalf(vid_handle
, NULL
, "VSWT", "v");
4591 if (!autosw
&& video_autosw_set(autosw
)) {
4593 "video auto-switch left enabled due to error\n");
4597 return (res
)? 0 : -EIO
;
4600 static int video_expand_toggle(void)
4602 switch (video_supported
) {
4603 case TPACPI_VIDEO_570
:
4604 return acpi_evalf(ec_handle
, NULL
, "_Q17", "v")?
4606 case TPACPI_VIDEO_770
:
4607 return acpi_evalf(vid_handle
, NULL
, "VEXP", "v")?
4609 case TPACPI_VIDEO_NEW
:
4610 return acpi_evalf(NULL
, NULL
, "\\VEXP", "v")?
4618 static int video_read(char *p
)
4623 if (video_supported
== TPACPI_VIDEO_NONE
) {
4624 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4628 status
= video_outputsw_get();
4632 autosw
= video_autosw_get();
4636 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
4637 len
+= sprintf(p
+ len
, "lcd:\t\t%s\n", enabled(status
, 0));
4638 len
+= sprintf(p
+ len
, "crt:\t\t%s\n", enabled(status
, 1));
4639 if (video_supported
== TPACPI_VIDEO_NEW
)
4640 len
+= sprintf(p
+ len
, "dvi:\t\t%s\n", enabled(status
, 3));
4641 len
+= sprintf(p
+ len
, "auto:\t\t%s\n", enabled(autosw
, 0));
4642 len
+= sprintf(p
+ len
, "commands:\tlcd_enable, lcd_disable\n");
4643 len
+= sprintf(p
+ len
, "commands:\tcrt_enable, crt_disable\n");
4644 if (video_supported
== TPACPI_VIDEO_NEW
)
4645 len
+= sprintf(p
+ len
, "commands:\tdvi_enable, dvi_disable\n");
4646 len
+= sprintf(p
+ len
, "commands:\tauto_enable, auto_disable\n");
4647 len
+= sprintf(p
+ len
, "commands:\tvideo_switch, expand_toggle\n");
4652 static int video_write(char *buf
)
4655 int enable
, disable
, status
;
4658 if (video_supported
== TPACPI_VIDEO_NONE
)
4664 while ((cmd
= next_cmd(&buf
))) {
4665 if (strlencmp(cmd
, "lcd_enable") == 0) {
4666 enable
|= TP_ACPI_VIDEO_S_LCD
;
4667 } else if (strlencmp(cmd
, "lcd_disable") == 0) {
4668 disable
|= TP_ACPI_VIDEO_S_LCD
;
4669 } else if (strlencmp(cmd
, "crt_enable") == 0) {
4670 enable
|= TP_ACPI_VIDEO_S_CRT
;
4671 } else if (strlencmp(cmd
, "crt_disable") == 0) {
4672 disable
|= TP_ACPI_VIDEO_S_CRT
;
4673 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
4674 strlencmp(cmd
, "dvi_enable") == 0) {
4675 enable
|= TP_ACPI_VIDEO_S_DVI
;
4676 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
4677 strlencmp(cmd
, "dvi_disable") == 0) {
4678 disable
|= TP_ACPI_VIDEO_S_DVI
;
4679 } else if (strlencmp(cmd
, "auto_enable") == 0) {
4680 res
= video_autosw_set(1);
4683 } else if (strlencmp(cmd
, "auto_disable") == 0) {
4684 res
= video_autosw_set(0);
4687 } else if (strlencmp(cmd
, "video_switch") == 0) {
4688 res
= video_outputsw_cycle();
4691 } else if (strlencmp(cmd
, "expand_toggle") == 0) {
4692 res
= video_expand_toggle();
4699 if (enable
|| disable
) {
4700 status
= video_outputsw_get();
4703 res
= video_outputsw_set((status
& ~disable
) | enable
);
4711 static struct ibm_struct video_driver_data
= {
4714 .write
= video_write
,
4718 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4720 /*************************************************************************
4721 * Light (thinklight) subdriver
4724 TPACPI_HANDLE(lght
, root
, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4725 TPACPI_HANDLE(ledb
, ec
, "LEDB"); /* G4x */
4727 static int light_get_status(void)
4731 if (tp_features
.light_status
) {
4732 if (!acpi_evalf(ec_handle
, &status
, "KBLT", "d"))
4740 static int light_set_status(int status
)
4744 if (tp_features
.light
) {
4746 rc
= acpi_evalf(cmos_handle
, NULL
, NULL
, "vd",
4748 TP_CMOS_THINKLIGHT_ON
:
4749 TP_CMOS_THINKLIGHT_OFF
);
4751 rc
= acpi_evalf(lght_handle
, NULL
, NULL
, "vd",
4754 return (rc
)? 0 : -EIO
;
4760 static void light_set_status_worker(struct work_struct
*work
)
4762 struct tpacpi_led_classdev
*data
=
4763 container_of(work
, struct tpacpi_led_classdev
, work
);
4765 if (likely(tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
))
4766 light_set_status((data
->new_state
!= TPACPI_LED_OFF
));
4769 static void light_sysfs_set(struct led_classdev
*led_cdev
,
4770 enum led_brightness brightness
)
4772 struct tpacpi_led_classdev
*data
=
4773 container_of(led_cdev
,
4774 struct tpacpi_led_classdev
,
4776 data
->new_state
= (brightness
!= LED_OFF
) ?
4777 TPACPI_LED_ON
: TPACPI_LED_OFF
;
4778 queue_work(tpacpi_wq
, &data
->work
);
4781 static enum led_brightness
light_sysfs_get(struct led_classdev
*led_cdev
)
4783 return (light_get_status() == 1)? LED_FULL
: LED_OFF
;
4786 static struct tpacpi_led_classdev tpacpi_led_thinklight
= {
4788 .name
= "tpacpi::thinklight",
4789 .brightness_set
= &light_sysfs_set
,
4790 .brightness_get
= &light_sysfs_get
,
4794 static int __init
light_init(struct ibm_init_struct
*iibm
)
4798 vdbg_printk(TPACPI_DBG_INIT
, "initializing light subdriver\n");
4800 TPACPI_ACPIHANDLE_INIT(ledb
);
4801 TPACPI_ACPIHANDLE_INIT(lght
);
4802 TPACPI_ACPIHANDLE_INIT(cmos
);
4803 INIT_WORK(&tpacpi_led_thinklight
.work
, light_set_status_worker
);
4805 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
4806 tp_features
.light
= (cmos_handle
|| lght_handle
) && !ledb_handle
;
4808 if (tp_features
.light
)
4809 /* light status not supported on
4810 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
4811 tp_features
.light_status
=
4812 acpi_evalf(ec_handle
, NULL
, "KBLT", "qv");
4814 vdbg_printk(TPACPI_DBG_INIT
, "light is %s, light status is %s\n",
4815 str_supported(tp_features
.light
),
4816 str_supported(tp_features
.light_status
));
4818 if (!tp_features
.light
)
4821 rc
= led_classdev_register(&tpacpi_pdev
->dev
,
4822 &tpacpi_led_thinklight
.led_classdev
);
4825 tp_features
.light
= 0;
4826 tp_features
.light_status
= 0;
4834 static void light_exit(void)
4836 led_classdev_unregister(&tpacpi_led_thinklight
.led_classdev
);
4837 if (work_pending(&tpacpi_led_thinklight
.work
))
4838 flush_workqueue(tpacpi_wq
);
4841 static int light_read(char *p
)
4846 if (!tp_features
.light
) {
4847 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4848 } else if (!tp_features
.light_status
) {
4849 len
+= sprintf(p
+ len
, "status:\t\tunknown\n");
4850 len
+= sprintf(p
+ len
, "commands:\ton, off\n");
4852 status
= light_get_status();
4855 len
+= sprintf(p
+ len
, "status:\t\t%s\n", onoff(status
, 0));
4856 len
+= sprintf(p
+ len
, "commands:\ton, off\n");
4862 static int light_write(char *buf
)
4867 if (!tp_features
.light
)
4870 while ((cmd
= next_cmd(&buf
))) {
4871 if (strlencmp(cmd
, "on") == 0) {
4873 } else if (strlencmp(cmd
, "off") == 0) {
4879 return light_set_status(newstatus
);
4882 static struct ibm_struct light_driver_data
= {
4885 .write
= light_write
,
4889 /*************************************************************************
4893 /* sysfs cmos_command -------------------------------------------------- */
4894 static ssize_t
cmos_command_store(struct device
*dev
,
4895 struct device_attribute
*attr
,
4896 const char *buf
, size_t count
)
4898 unsigned long cmos_cmd
;
4901 if (parse_strtoul(buf
, 21, &cmos_cmd
))
4904 res
= issue_thinkpad_cmos_command(cmos_cmd
);
4905 return (res
)? res
: count
;
4908 static struct device_attribute dev_attr_cmos_command
=
4909 __ATTR(cmos_command
, S_IWUSR
, NULL
, cmos_command_store
);
4911 /* --------------------------------------------------------------------- */
4913 static int __init
cmos_init(struct ibm_init_struct
*iibm
)
4917 vdbg_printk(TPACPI_DBG_INIT
,
4918 "initializing cmos commands subdriver\n");
4920 TPACPI_ACPIHANDLE_INIT(cmos
);
4922 vdbg_printk(TPACPI_DBG_INIT
, "cmos commands are %s\n",
4923 str_supported(cmos_handle
!= NULL
));
4925 res
= device_create_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4929 return (cmos_handle
)? 0 : 1;
4932 static void cmos_exit(void)
4934 device_remove_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4937 static int cmos_read(char *p
)
4941 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4942 R30, R31, T20-22, X20-21 */
4944 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4946 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
4947 len
+= sprintf(p
+ len
, "commands:\t<cmd> (<cmd> is 0-21)\n");
4953 static int cmos_write(char *buf
)
4958 while ((cmd
= next_cmd(&buf
))) {
4959 if (sscanf(cmd
, "%u", &cmos_cmd
) == 1 &&
4960 cmos_cmd
>= 0 && cmos_cmd
<= 21) {
4965 res
= issue_thinkpad_cmos_command(cmos_cmd
);
4973 static struct ibm_struct cmos_driver_data
= {
4976 .write
= cmos_write
,
4980 /*************************************************************************
4984 enum led_access_mode
{
4985 TPACPI_LED_NONE
= 0,
4986 TPACPI_LED_570
, /* 570 */
4987 TPACPI_LED_OLD
, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4988 TPACPI_LED_NEW
, /* all others */
4991 enum { /* For TPACPI_LED_OLD */
4992 TPACPI_LED_EC_HLCL
= 0x0c, /* EC reg to get led to power on */
4993 TPACPI_LED_EC_HLBL
= 0x0d, /* EC reg to blink a lit led */
4994 TPACPI_LED_EC_HLMS
= 0x0e, /* EC reg to select led to command */
4997 static enum led_access_mode led_supported
;
4999 TPACPI_HANDLE(led
, ec
, "SLED", /* 570 */
5000 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
5001 /* T20-22, X20-21 */
5002 "LED", /* all others */
5005 #define TPACPI_LED_NUMLEDS 16
5006 static struct tpacpi_led_classdev
*tpacpi_leds
;
5007 static enum led_status_t tpacpi_led_state_cache
[TPACPI_LED_NUMLEDS
];
5008 static const char * const tpacpi_led_names
[TPACPI_LED_NUMLEDS
] = {
5009 /* there's a limit of 19 chars + NULL before 2.6.26 */
5011 "tpacpi:orange:batt",
5012 "tpacpi:green:batt",
5013 "tpacpi::dock_active",
5014 "tpacpi::bay_active",
5015 "tpacpi::dock_batt",
5016 "tpacpi::unknown_led",
5018 "tpacpi::dock_status1",
5019 "tpacpi::dock_status2",
5020 "tpacpi::unknown_led2",
5021 "tpacpi::unknown_led3",
5022 "tpacpi::thinkvantage",
5024 #define TPACPI_SAFE_LEDS 0x1081U
5026 static inline bool tpacpi_is_led_restricted(const unsigned int led
)
5028 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5031 return (1U & (TPACPI_SAFE_LEDS
>> led
)) == 0;
5035 static int led_get_status(const unsigned int led
)
5038 enum led_status_t led_s
;
5040 switch (led_supported
) {
5041 case TPACPI_LED_570
:
5042 if (!acpi_evalf(ec_handle
,
5043 &status
, "GLED", "dd", 1 << led
))
5045 led_s
= (status
== 0)?
5050 tpacpi_led_state_cache
[led
] = led_s
;
5059 static int led_set_status(const unsigned int led
,
5060 const enum led_status_t ledstatus
)
5062 /* off, on, blink. Index is led_status_t */
5063 static const unsigned int led_sled_arg1
[] = { 0, 1, 3 };
5064 static const unsigned int led_led_arg1
[] = { 0, 0x80, 0xc0 };
5068 switch (led_supported
) {
5069 case TPACPI_LED_570
:
5071 if (unlikely(led
> 7))
5073 if (unlikely(tpacpi_is_led_restricted(led
)))
5075 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
5076 (1 << led
), led_sled_arg1
[ledstatus
]))
5079 case TPACPI_LED_OLD
:
5080 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
5081 if (unlikely(led
> 7))
5083 if (unlikely(tpacpi_is_led_restricted(led
)))
5085 rc
= ec_write(TPACPI_LED_EC_HLMS
, (1 << led
));
5087 rc
= ec_write(TPACPI_LED_EC_HLBL
,
5088 (ledstatus
== TPACPI_LED_BLINK
) << led
);
5090 rc
= ec_write(TPACPI_LED_EC_HLCL
,
5091 (ledstatus
!= TPACPI_LED_OFF
) << led
);
5093 case TPACPI_LED_NEW
:
5095 if (unlikely(led
>= TPACPI_LED_NUMLEDS
))
5097 if (unlikely(tpacpi_is_led_restricted(led
)))
5099 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
5100 led
, led_led_arg1
[ledstatus
]))
5108 tpacpi_led_state_cache
[led
] = ledstatus
;
5113 static void led_set_status_worker(struct work_struct
*work
)
5115 struct tpacpi_led_classdev
*data
=
5116 container_of(work
, struct tpacpi_led_classdev
, work
);
5118 if (likely(tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
))
5119 led_set_status(data
->led
, data
->new_state
);
5122 static void led_sysfs_set(struct led_classdev
*led_cdev
,
5123 enum led_brightness brightness
)
5125 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
5126 struct tpacpi_led_classdev
, led_classdev
);
5128 if (brightness
== LED_OFF
)
5129 data
->new_state
= TPACPI_LED_OFF
;
5130 else if (tpacpi_led_state_cache
[data
->led
] != TPACPI_LED_BLINK
)
5131 data
->new_state
= TPACPI_LED_ON
;
5133 data
->new_state
= TPACPI_LED_BLINK
;
5135 queue_work(tpacpi_wq
, &data
->work
);
5138 static int led_sysfs_blink_set(struct led_classdev
*led_cdev
,
5139 unsigned long *delay_on
, unsigned long *delay_off
)
5141 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
5142 struct tpacpi_led_classdev
, led_classdev
);
5144 /* Can we choose the flash rate? */
5145 if (*delay_on
== 0 && *delay_off
== 0) {
5146 /* yes. set them to the hardware blink rate (1 Hz) */
5147 *delay_on
= 500; /* ms */
5148 *delay_off
= 500; /* ms */
5149 } else if ((*delay_on
!= 500) || (*delay_off
!= 500))
5152 data
->new_state
= TPACPI_LED_BLINK
;
5153 queue_work(tpacpi_wq
, &data
->work
);
5158 static enum led_brightness
led_sysfs_get(struct led_classdev
*led_cdev
)
5162 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
5163 struct tpacpi_led_classdev
, led_classdev
);
5165 rc
= led_get_status(data
->led
);
5167 if (rc
== TPACPI_LED_OFF
|| rc
< 0)
5168 rc
= LED_OFF
; /* no error handling in led class :( */
5175 static void led_exit(void)
5179 for (i
= 0; i
< TPACPI_LED_NUMLEDS
; i
++) {
5180 if (tpacpi_leds
[i
].led_classdev
.name
)
5181 led_classdev_unregister(&tpacpi_leds
[i
].led_classdev
);
5187 static int __init
tpacpi_init_led(unsigned int led
)
5191 tpacpi_leds
[led
].led
= led
;
5193 /* LEDs with no name don't get registered */
5194 if (!tpacpi_led_names
[led
])
5197 tpacpi_leds
[led
].led_classdev
.brightness_set
= &led_sysfs_set
;
5198 tpacpi_leds
[led
].led_classdev
.blink_set
= &led_sysfs_blink_set
;
5199 if (led_supported
== TPACPI_LED_570
)
5200 tpacpi_leds
[led
].led_classdev
.brightness_get
=
5203 tpacpi_leds
[led
].led_classdev
.name
= tpacpi_led_names
[led
];
5205 INIT_WORK(&tpacpi_leds
[led
].work
, led_set_status_worker
);
5207 rc
= led_classdev_register(&tpacpi_pdev
->dev
,
5208 &tpacpi_leds
[led
].led_classdev
);
5210 tpacpi_leds
[led
].led_classdev
.name
= NULL
;
5215 static const struct tpacpi_quirk led_useful_qtable
[] __initconst
= {
5216 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5217 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5218 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5220 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5221 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5222 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5223 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5224 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5225 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5226 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5227 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5229 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5230 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5231 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5232 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5233 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5235 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5236 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5237 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5238 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5240 /* (1) - may have excess leds enabled on MSB */
5242 /* Defaults (order matters, keep last, don't reorder!) */
5244 .vendor
= PCI_VENDOR_ID_LENOVO
,
5245 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_ANY
,
5248 { /* IBM ThinkPads with no EC version string */
5249 .vendor
= PCI_VENDOR_ID_IBM
,
5250 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_UNKNOWN
,
5253 { /* IBM ThinkPads with EC version string */
5254 .vendor
= PCI_VENDOR_ID_IBM
,
5255 .bios
= TPACPI_MATCH_ANY
, .ec
= TPACPI_MATCH_ANY
,
5260 #undef TPACPI_LEDQ_IBM
5261 #undef TPACPI_LEDQ_LNV
5263 static int __init
led_init(struct ibm_init_struct
*iibm
)
5267 unsigned long useful_leds
;
5269 vdbg_printk(TPACPI_DBG_INIT
, "initializing LED subdriver\n");
5271 TPACPI_ACPIHANDLE_INIT(led
);
5274 /* led not supported on R30, R31 */
5275 led_supported
= TPACPI_LED_NONE
;
5276 else if (strlencmp(led_path
, "SLED") == 0)
5278 led_supported
= TPACPI_LED_570
;
5279 else if (strlencmp(led_path
, "SYSL") == 0)
5280 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5281 led_supported
= TPACPI_LED_OLD
;
5284 led_supported
= TPACPI_LED_NEW
;
5286 vdbg_printk(TPACPI_DBG_INIT
, "LED commands are %s, mode %d\n",
5287 str_supported(led_supported
), led_supported
);
5289 if (led_supported
== TPACPI_LED_NONE
)
5292 tpacpi_leds
= kzalloc(sizeof(*tpacpi_leds
) * TPACPI_LED_NUMLEDS
,
5295 printk(TPACPI_ERR
"Out of memory for LED data\n");
5299 useful_leds
= tpacpi_check_quirks(led_useful_qtable
,
5300 ARRAY_SIZE(led_useful_qtable
));
5302 for (i
= 0; i
< TPACPI_LED_NUMLEDS
; i
++) {
5303 if (!tpacpi_is_led_restricted(i
) &&
5304 test_bit(i
, &useful_leds
)) {
5305 rc
= tpacpi_init_led(i
);
5313 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5314 printk(TPACPI_NOTICE
5315 "warning: userspace override of important "
5316 "firmware LEDs is enabled\n");
5321 #define str_led_status(s) \
5322 ((s) == TPACPI_LED_OFF ? "off" : \
5323 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
5325 static int led_read(char *p
)
5329 if (!led_supported
) {
5330 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
5333 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
5335 if (led_supported
== TPACPI_LED_570
) {
5338 for (i
= 0; i
< 8; i
++) {
5339 status
= led_get_status(i
);
5342 len
+= sprintf(p
+ len
, "%d:\t\t%s\n",
5343 i
, str_led_status(status
));
5347 len
+= sprintf(p
+ len
, "commands:\t"
5348 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
5353 static int led_write(char *buf
)
5357 enum led_status_t s
;
5362 while ((cmd
= next_cmd(&buf
))) {
5363 if (sscanf(cmd
, "%d", &led
) != 1 || led
< 0 || led
> 15)
5366 if (strstr(cmd
, "off")) {
5368 } else if (strstr(cmd
, "on")) {
5370 } else if (strstr(cmd
, "blink")) {
5371 s
= TPACPI_LED_BLINK
;
5376 rc
= led_set_status(led
, s
);
5384 static struct ibm_struct led_driver_data
= {
5391 /*************************************************************************
5395 TPACPI_HANDLE(beep
, ec
, "BEEP"); /* all except R30, R31 */
5397 #define TPACPI_BEEP_Q1 0x0001
5399 static const struct tpacpi_quirk beep_quirk_table
[] __initconst
= {
5400 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1
), /* 570 */
5401 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1
), /* 570E - unverified */
5404 static int __init
beep_init(struct ibm_init_struct
*iibm
)
5406 unsigned long quirks
;
5408 vdbg_printk(TPACPI_DBG_INIT
, "initializing beep subdriver\n");
5410 TPACPI_ACPIHANDLE_INIT(beep
);
5412 vdbg_printk(TPACPI_DBG_INIT
, "beep is %s\n",
5413 str_supported(beep_handle
!= NULL
));
5415 quirks
= tpacpi_check_quirks(beep_quirk_table
,
5416 ARRAY_SIZE(beep_quirk_table
));
5418 tp_features
.beep_needs_two_args
= !!(quirks
& TPACPI_BEEP_Q1
);
5420 return (beep_handle
)? 0 : 1;
5423 static int beep_read(char *p
)
5428 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
5430 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
5431 len
+= sprintf(p
+ len
, "commands:\t<cmd> (<cmd> is 0-17)\n");
5437 static int beep_write(char *buf
)
5445 while ((cmd
= next_cmd(&buf
))) {
5446 if (sscanf(cmd
, "%u", &beep_cmd
) == 1 &&
5447 beep_cmd
>= 0 && beep_cmd
<= 17) {
5451 if (tp_features
.beep_needs_two_args
) {
5452 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vdd",
5456 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vd",
5465 static struct ibm_struct beep_driver_data
= {
5468 .write
= beep_write
,
5471 /*************************************************************************
5475 enum thermal_access_mode
{
5476 TPACPI_THERMAL_NONE
= 0, /* No thermal support */
5477 TPACPI_THERMAL_ACPI_TMP07
, /* Use ACPI TMP0-7 */
5478 TPACPI_THERMAL_ACPI_UPDT
, /* Use ACPI TMP0-7 with UPDT */
5479 TPACPI_THERMAL_TPEC_8
, /* Use ACPI EC regs, 8 sensors */
5480 TPACPI_THERMAL_TPEC_16
, /* Use ACPI EC regs, 16 sensors */
5483 enum { /* TPACPI_THERMAL_TPEC_* */
5484 TP_EC_THERMAL_TMP0
= 0x78, /* ACPI EC regs TMP 0..7 */
5485 TP_EC_THERMAL_TMP8
= 0xC0, /* ACPI EC regs TMP 8..15 */
5486 TP_EC_THERMAL_TMP_NA
= -128, /* ACPI EC sensor not available */
5489 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5490 struct ibm_thermal_sensors_struct
{
5491 s32 temp
[TPACPI_MAX_THERMAL_SENSORS
];
5494 static enum thermal_access_mode thermal_read_mode
;
5496 /* idx is zero-based */
5497 static int thermal_get_sensor(int idx
, s32
*value
)
5503 t
= TP_EC_THERMAL_TMP0
;
5505 switch (thermal_read_mode
) {
5506 #if TPACPI_MAX_THERMAL_SENSORS >= 16
5507 case TPACPI_THERMAL_TPEC_16
:
5508 if (idx
>= 8 && idx
<= 15) {
5509 t
= TP_EC_THERMAL_TMP8
;
5514 case TPACPI_THERMAL_TPEC_8
:
5516 if (!acpi_ec_read(t
+ idx
, &tmp
))
5518 *value
= tmp
* 1000;
5523 case TPACPI_THERMAL_ACPI_UPDT
:
5525 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
5526 if (!acpi_evalf(ec_handle
, NULL
, "UPDT", "v"))
5528 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
5530 *value
= (t
- 2732) * 100;
5535 case TPACPI_THERMAL_ACPI_TMP07
:
5537 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
5538 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
5540 if (t
> 127 || t
< -127)
5541 t
= TP_EC_THERMAL_TMP_NA
;
5547 case TPACPI_THERMAL_NONE
:
5555 static int thermal_get_sensors(struct ibm_thermal_sensors_struct
*s
)
5566 if (thermal_read_mode
== TPACPI_THERMAL_TPEC_16
)
5569 for (i
= 0 ; i
< n
; i
++) {
5570 res
= thermal_get_sensor(i
, &s
->temp
[i
]);
5578 /* sysfs temp##_input -------------------------------------------------- */
5580 static ssize_t
thermal_temp_input_show(struct device
*dev
,
5581 struct device_attribute
*attr
,
5584 struct sensor_device_attribute
*sensor_attr
=
5585 to_sensor_dev_attr(attr
);
5586 int idx
= sensor_attr
->index
;
5590 res
= thermal_get_sensor(idx
, &value
);
5593 if (value
== TP_EC_THERMAL_TMP_NA
* 1000)
5596 return snprintf(buf
, PAGE_SIZE
, "%d\n", value
);
5599 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
5600 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5601 thermal_temp_input_show, NULL, _idxB)
5603 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input
[] = {
5604 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5605 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5606 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5607 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5608 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5609 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5610 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5611 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5612 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5613 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5614 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5615 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5616 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5617 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5618 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5619 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5622 #define THERMAL_ATTRS(X) \
5623 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5625 static struct attribute
*thermal_temp_input_attr
[] = {
5645 static const struct attribute_group thermal_temp_input16_group
= {
5646 .attrs
= thermal_temp_input_attr
5649 static const struct attribute_group thermal_temp_input8_group
= {
5650 .attrs
= &thermal_temp_input_attr
[8]
5653 #undef THERMAL_SENSOR_ATTR_TEMP
5654 #undef THERMAL_ATTRS
5656 /* --------------------------------------------------------------------- */
5658 static int __init
thermal_init(struct ibm_init_struct
*iibm
)
5665 vdbg_printk(TPACPI_DBG_INIT
, "initializing thermal subdriver\n");
5667 acpi_tmp7
= acpi_evalf(ec_handle
, NULL
, "TMP7", "qv");
5669 if (thinkpad_id
.ec_model
) {
5671 * Direct EC access mode: sensors at registers
5672 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5673 * non-implemented, thermal sensors return 0x80 when
5678 for (i
= 0; i
< 8; i
++) {
5679 if (acpi_ec_read(TP_EC_THERMAL_TMP0
+ i
, &t
)) {
5685 if (acpi_ec_read(TP_EC_THERMAL_TMP8
+ i
, &t
)) {
5693 /* This is sheer paranoia, but we handle it anyway */
5696 "ThinkPad ACPI EC access misbehaving, "
5697 "falling back to ACPI TMPx access "
5699 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5702 "ThinkPad ACPI EC access misbehaving, "
5703 "disabling thermal sensors access\n");
5704 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5709 TPACPI_THERMAL_TPEC_16
: TPACPI_THERMAL_TPEC_8
;
5711 } else if (acpi_tmp7
) {
5712 if (acpi_evalf(ec_handle
, NULL
, "UPDT", "qv")) {
5713 /* 600e/x, 770e, 770x */
5714 thermal_read_mode
= TPACPI_THERMAL_ACPI_UPDT
;
5716 /* Standard ACPI TMPx access, max 8 sensors */
5717 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5720 /* temperatures not supported on 570, G4x, R30, R31, R32 */
5721 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5724 vdbg_printk(TPACPI_DBG_INIT
, "thermal is %s, mode %d\n",
5725 str_supported(thermal_read_mode
!= TPACPI_THERMAL_NONE
),
5728 switch (thermal_read_mode
) {
5729 case TPACPI_THERMAL_TPEC_16
:
5730 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5731 &thermal_temp_input16_group
);
5735 case TPACPI_THERMAL_TPEC_8
:
5736 case TPACPI_THERMAL_ACPI_TMP07
:
5737 case TPACPI_THERMAL_ACPI_UPDT
:
5738 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5739 &thermal_temp_input8_group
);
5743 case TPACPI_THERMAL_NONE
:
5751 static void thermal_exit(void)
5753 switch (thermal_read_mode
) {
5754 case TPACPI_THERMAL_TPEC_16
:
5755 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5756 &thermal_temp_input16_group
);
5758 case TPACPI_THERMAL_TPEC_8
:
5759 case TPACPI_THERMAL_ACPI_TMP07
:
5760 case TPACPI_THERMAL_ACPI_UPDT
:
5761 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5762 &thermal_temp_input16_group
);
5764 case TPACPI_THERMAL_NONE
:
5770 static int thermal_read(char *p
)
5774 struct ibm_thermal_sensors_struct t
;
5776 n
= thermal_get_sensors(&t
);
5777 if (unlikely(n
< 0))
5780 len
+= sprintf(p
+ len
, "temperatures:\t");
5783 for (i
= 0; i
< (n
- 1); i
++)
5784 len
+= sprintf(p
+ len
, "%d ", t
.temp
[i
] / 1000);
5785 len
+= sprintf(p
+ len
, "%d\n", t
.temp
[i
] / 1000);
5787 len
+= sprintf(p
+ len
, "not supported\n");
5792 static struct ibm_struct thermal_driver_data
= {
5794 .read
= thermal_read
,
5795 .exit
= thermal_exit
,
5798 /*************************************************************************
5802 static u8 ecdump_regs
[256];
5804 static int ecdump_read(char *p
)
5810 len
+= sprintf(p
+ len
, "EC "
5811 " +00 +01 +02 +03 +04 +05 +06 +07"
5812 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5813 for (i
= 0; i
< 256; i
+= 16) {
5814 len
+= sprintf(p
+ len
, "EC 0x%02x:", i
);
5815 for (j
= 0; j
< 16; j
++) {
5816 if (!acpi_ec_read(i
+ j
, &v
))
5818 if (v
!= ecdump_regs
[i
+ j
])
5819 len
+= sprintf(p
+ len
, " *%02x", v
);
5821 len
+= sprintf(p
+ len
, " %02x", v
);
5822 ecdump_regs
[i
+ j
] = v
;
5824 len
+= sprintf(p
+ len
, "\n");
5829 /* These are way too dangerous to advertise openly... */
5831 len
+= sprintf(p
+ len
, "commands:\t0x<offset> 0x<value>"
5832 " (<offset> is 00-ff, <value> is 00-ff)\n");
5833 len
+= sprintf(p
+ len
, "commands:\t0x<offset> <value> "
5834 " (<offset> is 00-ff, <value> is 0-255)\n");
5839 static int ecdump_write(char *buf
)
5844 while ((cmd
= next_cmd(&buf
))) {
5845 if (sscanf(cmd
, "0x%x 0x%x", &i
, &v
) == 2) {
5847 } else if (sscanf(cmd
, "0x%x %u", &i
, &v
) == 2) {
5851 if (i
>= 0 && i
< 256 && v
>= 0 && v
< 256) {
5852 if (!acpi_ec_write(i
, v
))
5861 static struct ibm_struct ecdump_driver_data
= {
5863 .read
= ecdump_read
,
5864 .write
= ecdump_write
,
5865 .flags
.experimental
= 1,
5868 /*************************************************************************
5869 * Backlight/brightness subdriver
5872 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5875 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5876 * CMOS NVRAM byte 0x5E, bits 0-3.
5878 * EC HBRV (0x31) has the following layout
5879 * Bit 7: unknown function
5880 * Bit 6: unknown function
5881 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5882 * Bit 4: must be set to zero to avoid problems
5883 * Bit 3-0: backlight brightness level
5885 * brightness_get_raw returns status data in the HBRV layout
5887 * WARNING: The X61 has been verified to use HBRV for something else, so
5888 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
5889 * testing on the very early *60 Lenovo models...
5893 TP_EC_BACKLIGHT
= 0x31,
5895 /* TP_EC_BACKLIGHT bitmasks */
5896 TP_EC_BACKLIGHT_LVLMSK
= 0x1F,
5897 TP_EC_BACKLIGHT_CMDMSK
= 0xE0,
5898 TP_EC_BACKLIGHT_MAPSW
= 0x20,
5901 enum tpacpi_brightness_access_mode
{
5902 TPACPI_BRGHT_MODE_AUTO
= 0, /* Not implemented yet */
5903 TPACPI_BRGHT_MODE_EC
, /* EC control */
5904 TPACPI_BRGHT_MODE_UCMS_STEP
, /* UCMS step-based control */
5905 TPACPI_BRGHT_MODE_ECNVRAM
, /* EC control w/ NVRAM store */
5906 TPACPI_BRGHT_MODE_MAX
5909 static struct backlight_device
*ibm_backlight_device
;
5911 static enum tpacpi_brightness_access_mode brightness_mode
=
5912 TPACPI_BRGHT_MODE_MAX
;
5914 static unsigned int brightness_enable
= 2; /* 2 = auto, 0 = no, 1 = yes */
5916 static struct mutex brightness_mutex
;
5918 /* NVRAM brightness access,
5919 * call with brightness_mutex held! */
5920 static unsigned int tpacpi_brightness_nvram_get(void)
5924 lnvram
= (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
)
5925 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
5926 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
5927 lnvram
&= (tp_features
.bright_16levels
) ? 0x0f : 0x07;
5932 static void tpacpi_brightness_checkpoint_nvram(void)
5937 if (brightness_mode
!= TPACPI_BRGHT_MODE_ECNVRAM
)
5940 vdbg_printk(TPACPI_DBG_BRGHT
,
5941 "trying to checkpoint backlight level to NVRAM...\n");
5943 if (mutex_lock_killable(&brightness_mutex
) < 0)
5946 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
5948 lec
&= TP_EC_BACKLIGHT_LVLMSK
;
5949 b_nvram
= nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
);
5951 if (lec
!= ((b_nvram
& TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
5952 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
)) {
5953 /* NVRAM needs update */
5954 b_nvram
&= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS
<<
5955 TP_NVRAM_POS_LEVEL_BRIGHTNESS
);
5957 nvram_write_byte(b_nvram
, TP_NVRAM_ADDR_BRIGHTNESS
);
5958 dbg_printk(TPACPI_DBG_BRGHT
,
5959 "updated NVRAM backlight level to %u (0x%02x)\n",
5960 (unsigned int) lec
, (unsigned int) b_nvram
);
5962 vdbg_printk(TPACPI_DBG_BRGHT
,
5963 "NVRAM backlight level already is %u (0x%02x)\n",
5964 (unsigned int) lec
, (unsigned int) b_nvram
);
5967 mutex_unlock(&brightness_mutex
);
5971 /* call with brightness_mutex held! */
5972 static int tpacpi_brightness_get_raw(int *status
)
5976 switch (brightness_mode
) {
5977 case TPACPI_BRGHT_MODE_UCMS_STEP
:
5978 *status
= tpacpi_brightness_nvram_get();
5980 case TPACPI_BRGHT_MODE_EC
:
5981 case TPACPI_BRGHT_MODE_ECNVRAM
:
5982 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
5991 /* call with brightness_mutex held! */
5992 /* do NOT call with illegal backlight level value */
5993 static int tpacpi_brightness_set_ec(unsigned int value
)
5997 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
)))
6000 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT
,
6001 (lec
& TP_EC_BACKLIGHT_CMDMSK
) |
6002 (value
& TP_EC_BACKLIGHT_LVLMSK
))))
6008 /* call with brightness_mutex held! */
6009 static int tpacpi_brightness_set_ucmsstep(unsigned int value
)
6012 unsigned int current_value
, i
;
6014 current_value
= tpacpi_brightness_nvram_get();
6016 if (value
== current_value
)
6019 cmos_cmd
= (value
> current_value
) ?
6020 TP_CMOS_BRIGHTNESS_UP
:
6021 TP_CMOS_BRIGHTNESS_DOWN
;
6022 inc
= (value
> current_value
) ? 1 : -1;
6024 for (i
= current_value
; i
!= value
; i
+= inc
)
6025 if (issue_thinkpad_cmos_command(cmos_cmd
))
6031 /* May return EINTR which can always be mapped to ERESTARTSYS */
6032 static int brightness_set(unsigned int value
)
6036 if (value
> ((tp_features
.bright_16levels
)? 15 : 7) ||
6040 vdbg_printk(TPACPI_DBG_BRGHT
,
6041 "set backlight level to %d\n", value
);
6043 res
= mutex_lock_killable(&brightness_mutex
);
6047 switch (brightness_mode
) {
6048 case TPACPI_BRGHT_MODE_EC
:
6049 case TPACPI_BRGHT_MODE_ECNVRAM
:
6050 res
= tpacpi_brightness_set_ec(value
);
6052 case TPACPI_BRGHT_MODE_UCMS_STEP
:
6053 res
= tpacpi_brightness_set_ucmsstep(value
);
6059 mutex_unlock(&brightness_mutex
);
6063 /* sysfs backlight class ----------------------------------------------- */
6065 static int brightness_update_status(struct backlight_device
*bd
)
6067 unsigned int level
=
6068 (bd
->props
.fb_blank
== FB_BLANK_UNBLANK
&&
6069 bd
->props
.power
== FB_BLANK_UNBLANK
) ?
6070 bd
->props
.brightness
: 0;
6072 dbg_printk(TPACPI_DBG_BRGHT
,
6073 "backlight: attempt to set level to %d\n",
6076 /* it is the backlight class's job (caller) to handle
6077 * EINTR and other errors properly */
6078 return brightness_set(level
);
6081 static int brightness_get(struct backlight_device
*bd
)
6085 res
= mutex_lock_killable(&brightness_mutex
);
6089 res
= tpacpi_brightness_get_raw(&status
);
6091 mutex_unlock(&brightness_mutex
);
6096 return status
& TP_EC_BACKLIGHT_LVLMSK
;
6099 static void tpacpi_brightness_notify_change(void)
6101 backlight_force_update(ibm_backlight_device
,
6102 BACKLIGHT_UPDATE_HOTKEY
);
6105 static struct backlight_ops ibm_backlight_data
= {
6106 .get_brightness
= brightness_get
,
6107 .update_status
= brightness_update_status
,
6110 /* --------------------------------------------------------------------- */
6113 * These are only useful for models that have only one possibility
6114 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6117 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6118 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6119 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6121 static const struct tpacpi_quirk brightness_quirk_table
[] __initconst
= {
6122 /* Models with ATI GPUs known to require ECNVRAM mode */
6123 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC
), /* T43/p ATI */
6125 /* Models with ATI GPUs that can use ECNVRAM */
6126 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC
),
6127 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6128 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6129 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6131 /* Models with Intel Extreme Graphics 2 */
6132 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC
),
6133 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6134 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK
|TPACPI_BRGHT_Q_EC
),
6136 /* Models with Intel GMA900 */
6137 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC
), /* T43, R52 */
6138 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC
), /* X41 */
6139 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC
), /* X41 Tablet */
6142 static int __init
brightness_init(struct ibm_init_struct
*iibm
)
6145 unsigned long quirks
;
6147 vdbg_printk(TPACPI_DBG_INIT
, "initializing brightness subdriver\n");
6149 mutex_init(&brightness_mutex
);
6151 quirks
= tpacpi_check_quirks(brightness_quirk_table
,
6152 ARRAY_SIZE(brightness_quirk_table
));
6155 * We always attempt to detect acpi support, so as to switch
6156 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6157 * going to publish a backlight interface
6159 b
= tpacpi_check_std_acpi_brightness_support();
6162 if (acpi_video_backlight_support()) {
6163 if (brightness_enable
> 1) {
6164 printk(TPACPI_NOTICE
6165 "Standard ACPI backlight interface "
6166 "available, not loading native one.\n");
6168 } else if (brightness_enable
== 1) {
6169 printk(TPACPI_NOTICE
6170 "Backlight control force enabled, even if standard "
6171 "ACPI backlight interface is available\n");
6174 if (brightness_enable
> 1) {
6175 printk(TPACPI_NOTICE
6176 "Standard ACPI backlight interface not "
6177 "available, thinkpad_acpi native "
6178 "brightness control enabled\n");
6183 if (!brightness_enable
) {
6184 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_BRGHT
,
6185 "brightness support disabled by "
6186 "module parameter\n");
6192 "Unsupported brightness interface, "
6193 "please contact %s\n", TPACPI_MAIL
);
6197 tp_features
.bright_16levels
= 1;
6200 * Check for module parameter bogosity, note that we
6201 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6202 * able to detect "unspecified"
6204 if (brightness_mode
> TPACPI_BRGHT_MODE_MAX
)
6207 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6208 if (brightness_mode
== TPACPI_BRGHT_MODE_AUTO
||
6209 brightness_mode
== TPACPI_BRGHT_MODE_MAX
) {
6210 if (quirks
& TPACPI_BRGHT_Q_EC
)
6211 brightness_mode
= TPACPI_BRGHT_MODE_ECNVRAM
;
6213 brightness_mode
= TPACPI_BRGHT_MODE_UCMS_STEP
;
6215 dbg_printk(TPACPI_DBG_BRGHT
,
6216 "driver auto-selected brightness_mode=%d\n",
6221 if (thinkpad_id
.vendor
!= PCI_VENDOR_ID_IBM
&&
6222 (brightness_mode
== TPACPI_BRGHT_MODE_ECNVRAM
||
6223 brightness_mode
== TPACPI_BRGHT_MODE_EC
))
6226 if (tpacpi_brightness_get_raw(&b
) < 0)
6229 if (tp_features
.bright_16levels
)
6231 "detected a 16-level brightness capable ThinkPad\n");
6233 ibm_backlight_device
= backlight_device_register(
6234 TPACPI_BACKLIGHT_DEV_NAME
, NULL
, NULL
,
6235 &ibm_backlight_data
);
6236 if (IS_ERR(ibm_backlight_device
)) {
6237 int rc
= PTR_ERR(ibm_backlight_device
);
6238 ibm_backlight_device
= NULL
;
6239 printk(TPACPI_ERR
"Could not register backlight device\n");
6242 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_BRGHT
,
6243 "brightness is supported\n");
6245 if (quirks
& TPACPI_BRGHT_Q_ASK
) {
6246 printk(TPACPI_NOTICE
6247 "brightness: will use unverified default: "
6248 "brightness_mode=%d\n", brightness_mode
);
6249 printk(TPACPI_NOTICE
6250 "brightness: please report to %s whether it works well "
6251 "or not on your ThinkPad\n", TPACPI_MAIL
);
6254 ibm_backlight_device
->props
.max_brightness
=
6255 (tp_features
.bright_16levels
)? 15 : 7;
6256 ibm_backlight_device
->props
.brightness
= b
& TP_EC_BACKLIGHT_LVLMSK
;
6257 backlight_update_status(ibm_backlight_device
);
6259 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_BRGHT
,
6260 "brightness: registering brightness hotkeys "
6261 "as change notification\n");
6262 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6263 | TP_ACPI_HKEY_BRGHTUP_MASK
6264 | TP_ACPI_HKEY_BRGHTDWN_MASK
);;
6268 static void brightness_suspend(pm_message_t state
)
6270 tpacpi_brightness_checkpoint_nvram();
6273 static void brightness_shutdown(void)
6275 tpacpi_brightness_checkpoint_nvram();
6278 static void brightness_exit(void)
6280 if (ibm_backlight_device
) {
6281 vdbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_BRGHT
,
6282 "calling backlight_device_unregister()\n");
6283 backlight_device_unregister(ibm_backlight_device
);
6286 tpacpi_brightness_checkpoint_nvram();
6289 static int brightness_read(char *p
)
6294 level
= brightness_get(NULL
);
6296 len
+= sprintf(p
+ len
, "level:\t\tunreadable\n");
6298 len
+= sprintf(p
+ len
, "level:\t\t%d\n", level
);
6299 len
+= sprintf(p
+ len
, "commands:\tup, down\n");
6300 len
+= sprintf(p
+ len
, "commands:\tlevel <level>"
6301 " (<level> is 0-%d)\n",
6302 (tp_features
.bright_16levels
) ? 15 : 7);
6308 static int brightness_write(char *buf
)
6313 int max_level
= (tp_features
.bright_16levels
) ? 15 : 7;
6315 level
= brightness_get(NULL
);
6319 while ((cmd
= next_cmd(&buf
))) {
6320 if (strlencmp(cmd
, "up") == 0) {
6321 if (level
< max_level
)
6323 } else if (strlencmp(cmd
, "down") == 0) {
6326 } else if (sscanf(cmd
, "level %d", &level
) == 1 &&
6327 level
>= 0 && level
<= max_level
) {
6333 tpacpi_disclose_usertask("procfs brightness",
6334 "set level to %d\n", level
);
6337 * Now we know what the final level should be, so we try to set it.
6338 * Doing it this way makes the syscall restartable in case of EINTR
6340 rc
= brightness_set(level
);
6341 if (!rc
&& ibm_backlight_device
)
6342 backlight_force_update(ibm_backlight_device
,
6343 BACKLIGHT_UPDATE_SYSFS
);
6344 return (rc
== -EINTR
)? -ERESTARTSYS
: rc
;
6347 static struct ibm_struct brightness_driver_data
= {
6348 .name
= "brightness",
6349 .read
= brightness_read
,
6350 .write
= brightness_write
,
6351 .exit
= brightness_exit
,
6352 .suspend
= brightness_suspend
,
6353 .shutdown
= brightness_shutdown
,
6356 /*************************************************************************
6360 static int volume_offset
= 0x30;
6362 static int volume_read(char *p
)
6367 if (!acpi_ec_read(volume_offset
, &level
)) {
6368 len
+= sprintf(p
+ len
, "level:\t\tunreadable\n");
6370 len
+= sprintf(p
+ len
, "level:\t\t%d\n", level
& 0xf);
6371 len
+= sprintf(p
+ len
, "mute:\t\t%s\n", onoff(level
, 6));
6372 len
+= sprintf(p
+ len
, "commands:\tup, down, mute\n");
6373 len
+= sprintf(p
+ len
, "commands:\tlevel <level>"
6374 " (<level> is 0-15)\n");
6380 static int volume_write(char *buf
)
6382 int cmos_cmd
, inc
, i
;
6384 int new_level
, new_mute
;
6387 while ((cmd
= next_cmd(&buf
))) {
6388 if (!acpi_ec_read(volume_offset
, &level
))
6390 new_mute
= mute
= level
& 0x40;
6391 new_level
= level
= level
& 0xf;
6393 if (strlencmp(cmd
, "up") == 0) {
6397 new_level
= level
== 15 ? 15 : level
+ 1;
6398 } else if (strlencmp(cmd
, "down") == 0) {
6402 new_level
= level
== 0 ? 0 : level
- 1;
6403 } else if (sscanf(cmd
, "level %d", &new_level
) == 1 &&
6404 new_level
>= 0 && new_level
<= 15) {
6406 } else if (strlencmp(cmd
, "mute") == 0) {
6411 if (new_level
!= level
) {
6412 /* mute doesn't change */
6414 cmos_cmd
= (new_level
> level
) ?
6415 TP_CMOS_VOLUME_UP
: TP_CMOS_VOLUME_DOWN
;
6416 inc
= new_level
> level
? 1 : -1;
6418 if (mute
&& (issue_thinkpad_cmos_command(cmos_cmd
) ||
6419 !acpi_ec_write(volume_offset
, level
)))
6422 for (i
= level
; i
!= new_level
; i
+= inc
)
6423 if (issue_thinkpad_cmos_command(cmos_cmd
) ||
6424 !acpi_ec_write(volume_offset
, i
+ inc
))
6428 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE
) ||
6429 !acpi_ec_write(volume_offset
, new_level
+ mute
))) {
6434 if (new_mute
!= mute
) {
6435 /* level doesn't change */
6437 cmos_cmd
= (new_mute
) ?
6438 TP_CMOS_VOLUME_MUTE
: TP_CMOS_VOLUME_UP
;
6440 if (issue_thinkpad_cmos_command(cmos_cmd
) ||
6441 !acpi_ec_write(volume_offset
, level
+ new_mute
))
6449 static struct ibm_struct volume_driver_data
= {
6451 .read
= volume_read
,
6452 .write
= volume_write
,
6455 /*************************************************************************
6462 * TPACPI_FAN_RD_ACPI_GFAN:
6463 * ACPI GFAN method: returns fan level
6465 * see TPACPI_FAN_WR_ACPI_SFAN
6466 * EC 0x2f (HFSP) not available if GFAN exists
6468 * TPACPI_FAN_WR_ACPI_SFAN:
6469 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
6471 * EC 0x2f (HFSP) might be available *for reading*, but do not use
6474 * TPACPI_FAN_WR_TPEC:
6475 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
6476 * Supported on almost all ThinkPads
6478 * Fan speed changes of any sort (including those caused by the
6479 * disengaged mode) are usually done slowly by the firmware as the
6480 * maximum ammount of fan duty cycle change per second seems to be
6483 * Reading is not available if GFAN exists.
6484 * Writing is not available if SFAN exists.
6487 * 7 automatic mode engaged;
6488 * (default operation mode of the ThinkPad)
6489 * fan level is ignored in this mode.
6490 * 6 full speed mode (takes precedence over bit 7);
6491 * not available on all thinkpads. May disable
6492 * the tachometer while the fan controller ramps up
6493 * the speed (which can take up to a few *minutes*).
6494 * Speeds up fan to 100% duty-cycle, which is far above
6495 * the standard RPM levels. It is not impossible that
6496 * it could cause hardware damage.
6497 * 5-3 unused in some models. Extra bits for fan level
6498 * in others, but still useless as all values above
6499 * 7 map to the same speed as level 7 in these models.
6500 * 2-0 fan level (0..7 usually)
6502 * 0x07 = max (set when temperatures critical)
6503 * Some ThinkPads may have other levels, see
6504 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
6506 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
6507 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
6508 * does so, its initial value is meaningless (0x07).
6510 * For firmware bugs, refer to:
6511 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6515 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
6516 * Main fan tachometer reading (in RPM)
6518 * This register is present on all ThinkPads with a new-style EC, and
6519 * it is known not to be present on the A21m/e, and T22, as there is
6520 * something else in offset 0x84 according to the ACPI DSDT. Other
6521 * ThinkPads from this same time period (and earlier) probably lack the
6522 * tachometer as well.
6524 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
6525 * was never fixed by IBM to report the EC firmware version string
6526 * probably support the tachometer (like the early X models), so
6527 * detecting it is quite hard. We need more data to know for sure.
6529 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
6532 * FIRMWARE BUG: may go stale while the EC is switching to full speed
6535 * For firmware bugs, refer to:
6536 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6540 * ThinkPad EC register 0x31 bit 0 (only on select models)
6542 * When bit 0 of EC register 0x31 is zero, the tachometer registers
6543 * show the speed of the main fan. When bit 0 of EC register 0x31
6544 * is one, the tachometer registers show the speed of the auxiliary
6547 * Fan control seems to affect both fans, regardless of the state
6550 * So far, only the firmware for the X60/X61 non-tablet versions
6551 * seem to support this (firmware TP-7M).
6553 * TPACPI_FAN_WR_ACPI_FANS:
6554 * ThinkPad X31, X40, X41. Not available in the X60.
6556 * FANS ACPI handle: takes three arguments: low speed, medium speed,
6557 * high speed. ACPI DSDT seems to map these three speeds to levels
6558 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
6559 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
6561 * The speeds are stored on handles
6562 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
6564 * There are three default speed sets, acessible as handles:
6565 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
6567 * ACPI DSDT switches which set is in use depending on various
6570 * TPACPI_FAN_WR_TPEC is also available and should be used to
6571 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
6572 * but the ACPI tables just mention level 7.
6575 enum { /* Fan control constants */
6576 fan_status_offset
= 0x2f, /* EC register 0x2f */
6577 fan_rpm_offset
= 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
6578 * 0x84 must be read before 0x85 */
6579 fan_select_offset
= 0x31, /* EC register 0x31 (Firmware 7M)
6580 bit 0 selects which fan is active */
6582 TP_EC_FAN_FULLSPEED
= 0x40, /* EC fan mode: full speed */
6583 TP_EC_FAN_AUTO
= 0x80, /* EC fan mode: auto fan control */
6585 TPACPI_FAN_LAST_LEVEL
= 0x100, /* Use cached last-seen fan level */
6588 enum fan_status_access_mode
{
6589 TPACPI_FAN_NONE
= 0, /* No fan status or control */
6590 TPACPI_FAN_RD_ACPI_GFAN
, /* Use ACPI GFAN */
6591 TPACPI_FAN_RD_TPEC
, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
6594 enum fan_control_access_mode
{
6595 TPACPI_FAN_WR_NONE
= 0, /* No fan control */
6596 TPACPI_FAN_WR_ACPI_SFAN
, /* Use ACPI SFAN */
6597 TPACPI_FAN_WR_TPEC
, /* Use ACPI EC reg 0x2f */
6598 TPACPI_FAN_WR_ACPI_FANS
, /* Use ACPI FANS and EC reg 0x2f */
6601 enum fan_control_commands
{
6602 TPACPI_FAN_CMD_SPEED
= 0x0001, /* speed command */
6603 TPACPI_FAN_CMD_LEVEL
= 0x0002, /* level command */
6604 TPACPI_FAN_CMD_ENABLE
= 0x0004, /* enable/disable cmd,
6605 * and also watchdog cmd */
6608 static int fan_control_allowed
;
6610 static enum fan_status_access_mode fan_status_access_mode
;
6611 static enum fan_control_access_mode fan_control_access_mode
;
6612 static enum fan_control_commands fan_control_commands
;
6614 static u8 fan_control_initial_status
;
6615 static u8 fan_control_desired_level
;
6616 static u8 fan_control_resume_level
;
6617 static int fan_watchdog_maxinterval
;
6619 static struct mutex fan_mutex
;
6621 static void fan_watchdog_fire(struct work_struct
*ignored
);
6622 static DECLARE_DELAYED_WORK(fan_watchdog_task
, fan_watchdog_fire
);
6624 TPACPI_HANDLE(fans
, ec
, "FANS"); /* X31, X40, X41 */
6625 TPACPI_HANDLE(gfan
, ec
, "GFAN", /* 570 */
6626 "\\FSPD", /* 600e/x, 770e, 770x */
6628 TPACPI_HANDLE(sfan
, ec
, "SFAN", /* 570 */
6629 "JFNS", /* 770x-JL */
6633 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
6634 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
6635 * be in auto mode (0x80).
6637 * This is corrected by any write to HFSP either by the driver, or
6640 * We assume 0x07 really means auto mode while this quirk is active,
6641 * as this is far more likely than the ThinkPad being in level 7,
6642 * which is only used by the firmware during thermal emergencies.
6644 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
6645 * TP-70 (T43, R52), which are known to be buggy.
6648 static void fan_quirk1_setup(void)
6650 if (fan_control_initial_status
== 0x07) {
6651 printk(TPACPI_NOTICE
6652 "fan_init: initial fan status is unknown, "
6653 "assuming it is in auto mode\n");
6654 tp_features
.fan_ctrl_status_undef
= 1;
6658 static void fan_quirk1_handle(u8
*fan_status
)
6660 if (unlikely(tp_features
.fan_ctrl_status_undef
)) {
6661 if (*fan_status
!= fan_control_initial_status
) {
6662 /* something changed the HFSP regisnter since
6663 * driver init time, so it is not undefined
6665 tp_features
.fan_ctrl_status_undef
= 0;
6667 /* Return most likely status. In fact, it
6668 * might be the only possible status */
6669 *fan_status
= TP_EC_FAN_AUTO
;
6674 /* Select main fan on X60/X61, NOOP on others */
6675 static bool fan_select_fan1(void)
6677 if (tp_features
.second_fan
) {
6680 if (ec_read(fan_select_offset
, &val
) < 0)
6683 if (ec_write(fan_select_offset
, val
) < 0)
6689 /* Select secondary fan on X60/X61 */
6690 static bool fan_select_fan2(void)
6694 if (!tp_features
.second_fan
)
6697 if (ec_read(fan_select_offset
, &val
) < 0)
6700 if (ec_write(fan_select_offset
, val
) < 0)
6707 * Call with fan_mutex held
6709 static void fan_update_desired_level(u8 status
)
6712 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
6714 fan_control_desired_level
= 7;
6716 fan_control_desired_level
= status
;
6720 static int fan_get_status(u8
*status
)
6725 * Add TPACPI_FAN_RD_ACPI_FANS ? */
6727 switch (fan_status_access_mode
) {
6728 case TPACPI_FAN_RD_ACPI_GFAN
:
6729 /* 570, 600e/x, 770e, 770x */
6731 if (unlikely(!acpi_evalf(gfan_handle
, &s
, NULL
, "d")))
6739 case TPACPI_FAN_RD_TPEC
:
6740 /* all except 570, 600e/x, 770e, 770x */
6741 if (unlikely(!acpi_ec_read(fan_status_offset
, &s
)))
6744 if (likely(status
)) {
6746 fan_quirk1_handle(status
);
6758 static int fan_get_status_safe(u8
*status
)
6763 if (mutex_lock_killable(&fan_mutex
))
6764 return -ERESTARTSYS
;
6765 rc
= fan_get_status(&s
);
6767 fan_update_desired_level(s
);
6768 mutex_unlock(&fan_mutex
);
6776 static int fan_get_speed(unsigned int *speed
)
6780 switch (fan_status_access_mode
) {
6781 case TPACPI_FAN_RD_TPEC
:
6782 /* all except 570, 600e/x, 770e, 770x */
6783 if (unlikely(!fan_select_fan1()))
6785 if (unlikely(!acpi_ec_read(fan_rpm_offset
, &lo
) ||
6786 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
)))
6790 *speed
= (hi
<< 8) | lo
;
6801 static int fan2_get_speed(unsigned int *speed
)
6806 switch (fan_status_access_mode
) {
6807 case TPACPI_FAN_RD_TPEC
:
6808 /* all except 570, 600e/x, 770e, 770x */
6809 if (unlikely(!fan_select_fan2()))
6811 rc
= !acpi_ec_read(fan_rpm_offset
, &lo
) ||
6812 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
);
6813 fan_select_fan1(); /* play it safe */
6818 *speed
= (hi
<< 8) | lo
;
6829 static int fan_set_level(int level
)
6831 if (!fan_control_allowed
)
6834 switch (fan_control_access_mode
) {
6835 case TPACPI_FAN_WR_ACPI_SFAN
:
6836 if (level
>= 0 && level
<= 7) {
6837 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", level
))
6843 case TPACPI_FAN_WR_ACPI_FANS
:
6844 case TPACPI_FAN_WR_TPEC
:
6845 if (!(level
& TP_EC_FAN_AUTO
) &&
6846 !(level
& TP_EC_FAN_FULLSPEED
) &&
6847 ((level
< 0) || (level
> 7)))
6850 /* safety net should the EC not support AUTO
6851 * or FULLSPEED mode bits and just ignore them */
6852 if (level
& TP_EC_FAN_FULLSPEED
)
6853 level
|= 7; /* safety min speed 7 */
6854 else if (level
& TP_EC_FAN_AUTO
)
6855 level
|= 4; /* safety min speed 4 */
6857 if (!acpi_ec_write(fan_status_offset
, level
))
6860 tp_features
.fan_ctrl_status_undef
= 0;
6867 vdbg_printk(TPACPI_DBG_FAN
,
6868 "fan control: set fan control register to 0x%02x\n", level
);
6872 static int fan_set_level_safe(int level
)
6876 if (!fan_control_allowed
)
6879 if (mutex_lock_killable(&fan_mutex
))
6880 return -ERESTARTSYS
;
6882 if (level
== TPACPI_FAN_LAST_LEVEL
)
6883 level
= fan_control_desired_level
;
6885 rc
= fan_set_level(level
);
6887 fan_update_desired_level(level
);
6889 mutex_unlock(&fan_mutex
);
6893 static int fan_set_enable(void)
6898 if (!fan_control_allowed
)
6901 if (mutex_lock_killable(&fan_mutex
))
6902 return -ERESTARTSYS
;
6904 switch (fan_control_access_mode
) {
6905 case TPACPI_FAN_WR_ACPI_FANS
:
6906 case TPACPI_FAN_WR_TPEC
:
6907 rc
= fan_get_status(&s
);
6911 /* Don't go out of emergency fan mode */
6914 s
|= TP_EC_FAN_AUTO
| 4; /* min fan speed 4 */
6917 if (!acpi_ec_write(fan_status_offset
, s
))
6920 tp_features
.fan_ctrl_status_undef
= 0;
6925 case TPACPI_FAN_WR_ACPI_SFAN
:
6926 rc
= fan_get_status(&s
);
6932 /* Set fan to at least level 4 */
6935 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", s
))
6945 mutex_unlock(&fan_mutex
);
6948 vdbg_printk(TPACPI_DBG_FAN
,
6949 "fan control: set fan control register to 0x%02x\n",
6954 static int fan_set_disable(void)
6958 if (!fan_control_allowed
)
6961 if (mutex_lock_killable(&fan_mutex
))
6962 return -ERESTARTSYS
;
6965 switch (fan_control_access_mode
) {
6966 case TPACPI_FAN_WR_ACPI_FANS
:
6967 case TPACPI_FAN_WR_TPEC
:
6968 if (!acpi_ec_write(fan_status_offset
, 0x00))
6971 fan_control_desired_level
= 0;
6972 tp_features
.fan_ctrl_status_undef
= 0;
6976 case TPACPI_FAN_WR_ACPI_SFAN
:
6977 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", 0x00))
6980 fan_control_desired_level
= 0;
6988 vdbg_printk(TPACPI_DBG_FAN
,
6989 "fan control: set fan control register to 0\n");
6991 mutex_unlock(&fan_mutex
);
6995 static int fan_set_speed(int speed
)
6999 if (!fan_control_allowed
)
7002 if (mutex_lock_killable(&fan_mutex
))
7003 return -ERESTARTSYS
;
7006 switch (fan_control_access_mode
) {
7007 case TPACPI_FAN_WR_ACPI_FANS
:
7008 if (speed
>= 0 && speed
<= 65535) {
7009 if (!acpi_evalf(fans_handle
, NULL
, NULL
, "vddd",
7010 speed
, speed
, speed
))
7020 mutex_unlock(&fan_mutex
);
7024 static void fan_watchdog_reset(void)
7026 static int fan_watchdog_active
;
7028 if (fan_control_access_mode
== TPACPI_FAN_WR_NONE
)
7031 if (fan_watchdog_active
)
7032 cancel_delayed_work(&fan_watchdog_task
);
7034 if (fan_watchdog_maxinterval
> 0 &&
7035 tpacpi_lifecycle
!= TPACPI_LIFE_EXITING
) {
7036 fan_watchdog_active
= 1;
7037 if (!queue_delayed_work(tpacpi_wq
, &fan_watchdog_task
,
7038 msecs_to_jiffies(fan_watchdog_maxinterval
7041 "failed to queue the fan watchdog, "
7042 "watchdog will not trigger\n");
7045 fan_watchdog_active
= 0;
7048 static void fan_watchdog_fire(struct work_struct
*ignored
)
7052 if (tpacpi_lifecycle
!= TPACPI_LIFE_RUNNING
)
7055 printk(TPACPI_NOTICE
"fan watchdog: enabling fan\n");
7056 rc
= fan_set_enable();
7058 printk(TPACPI_ERR
"fan watchdog: error %d while enabling fan, "
7059 "will try again later...\n", -rc
);
7060 /* reschedule for later */
7061 fan_watchdog_reset();
7066 * SYSFS fan layout: hwmon compatible (device)
7069 * 0: "disengaged" mode
7071 * 2: native EC "auto" mode (recommended, hardware default)
7073 * pwm*: set speed in manual mode, ignored otherwise.
7074 * 0 is level 0; 255 is level 7. Intermediate points done with linear
7077 * fan*_input: tachometer reading, RPM
7080 * SYSFS fan layout: extensions
7082 * fan_watchdog (driver):
7083 * fan watchdog interval in seconds, 0 disables (default), max 120
7086 /* sysfs fan pwm1_enable ----------------------------------------------- */
7087 static ssize_t
fan_pwm1_enable_show(struct device
*dev
,
7088 struct device_attribute
*attr
,
7094 res
= fan_get_status_safe(&status
);
7098 if (status
& TP_EC_FAN_FULLSPEED
) {
7100 } else if (status
& TP_EC_FAN_AUTO
) {
7105 return snprintf(buf
, PAGE_SIZE
, "%d\n", mode
);
7108 static ssize_t
fan_pwm1_enable_store(struct device
*dev
,
7109 struct device_attribute
*attr
,
7110 const char *buf
, size_t count
)
7115 if (parse_strtoul(buf
, 2, &t
))
7118 tpacpi_disclose_usertask("hwmon pwm1_enable",
7119 "set fan mode to %lu\n", t
);
7123 level
= TP_EC_FAN_FULLSPEED
;
7126 level
= TPACPI_FAN_LAST_LEVEL
;
7129 level
= TP_EC_FAN_AUTO
;
7132 /* reserved for software-controlled auto mode */
7138 res
= fan_set_level_safe(level
);
7144 fan_watchdog_reset();
7149 static struct device_attribute dev_attr_fan_pwm1_enable
=
7150 __ATTR(pwm1_enable
, S_IWUSR
| S_IRUGO
,
7151 fan_pwm1_enable_show
, fan_pwm1_enable_store
);
7153 /* sysfs fan pwm1 ------------------------------------------------------ */
7154 static ssize_t
fan_pwm1_show(struct device
*dev
,
7155 struct device_attribute
*attr
,
7161 res
= fan_get_status_safe(&status
);
7166 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) != 0)
7167 status
= fan_control_desired_level
;
7172 return snprintf(buf
, PAGE_SIZE
, "%u\n", (status
* 255) / 7);
7175 static ssize_t
fan_pwm1_store(struct device
*dev
,
7176 struct device_attribute
*attr
,
7177 const char *buf
, size_t count
)
7181 u8 status
, newlevel
;
7183 if (parse_strtoul(buf
, 255, &s
))
7186 tpacpi_disclose_usertask("hwmon pwm1",
7187 "set fan speed to %lu\n", s
);
7189 /* scale down from 0-255 to 0-7 */
7190 newlevel
= (s
>> 5) & 0x07;
7192 if (mutex_lock_killable(&fan_mutex
))
7193 return -ERESTARTSYS
;
7195 rc
= fan_get_status(&status
);
7196 if (!rc
&& (status
&
7197 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
7198 rc
= fan_set_level(newlevel
);
7202 fan_update_desired_level(newlevel
);
7203 fan_watchdog_reset();
7207 mutex_unlock(&fan_mutex
);
7208 return (rc
)? rc
: count
;
7211 static struct device_attribute dev_attr_fan_pwm1
=
7212 __ATTR(pwm1
, S_IWUSR
| S_IRUGO
,
7213 fan_pwm1_show
, fan_pwm1_store
);
7215 /* sysfs fan fan1_input ------------------------------------------------ */
7216 static ssize_t
fan_fan1_input_show(struct device
*dev
,
7217 struct device_attribute
*attr
,
7223 res
= fan_get_speed(&speed
);
7227 return snprintf(buf
, PAGE_SIZE
, "%u\n", speed
);
7230 static struct device_attribute dev_attr_fan_fan1_input
=
7231 __ATTR(fan1_input
, S_IRUGO
,
7232 fan_fan1_input_show
, NULL
);
7234 /* sysfs fan fan2_input ------------------------------------------------ */
7235 static ssize_t
fan_fan2_input_show(struct device
*dev
,
7236 struct device_attribute
*attr
,
7242 res
= fan2_get_speed(&speed
);
7246 return snprintf(buf
, PAGE_SIZE
, "%u\n", speed
);
7249 static struct device_attribute dev_attr_fan_fan2_input
=
7250 __ATTR(fan2_input
, S_IRUGO
,
7251 fan_fan2_input_show
, NULL
);
7253 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
7254 static ssize_t
fan_fan_watchdog_show(struct device_driver
*drv
,
7257 return snprintf(buf
, PAGE_SIZE
, "%u\n", fan_watchdog_maxinterval
);
7260 static ssize_t
fan_fan_watchdog_store(struct device_driver
*drv
,
7261 const char *buf
, size_t count
)
7265 if (parse_strtoul(buf
, 120, &t
))
7268 if (!fan_control_allowed
)
7271 fan_watchdog_maxinterval
= t
;
7272 fan_watchdog_reset();
7274 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t
);
7279 static DRIVER_ATTR(fan_watchdog
, S_IWUSR
| S_IRUGO
,
7280 fan_fan_watchdog_show
, fan_fan_watchdog_store
);
7282 /* --------------------------------------------------------------------- */
7283 static struct attribute
*fan_attributes
[] = {
7284 &dev_attr_fan_pwm1_enable
.attr
, &dev_attr_fan_pwm1
.attr
,
7285 &dev_attr_fan_fan1_input
.attr
,
7286 NULL
, /* for fan2_input */
7290 static const struct attribute_group fan_attr_group
= {
7291 .attrs
= fan_attributes
,
7294 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
7295 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7297 #define TPACPI_FAN_QI(__id1, __id2, __quirks) \
7298 { .vendor = PCI_VENDOR_ID_IBM, \
7299 .bios = TPACPI_MATCH_ANY, \
7300 .ec = TPID(__id1, __id2), \
7301 .quirks = __quirks }
7303 #define TPACPI_FAN_QL(__id1, __id2, __quirks) \
7304 { .vendor = PCI_VENDOR_ID_LENOVO, \
7305 .bios = TPACPI_MATCH_ANY, \
7306 .ec = TPID(__id1, __id2), \
7307 .quirks = __quirks }
7309 static const struct tpacpi_quirk fan_quirk_table
[] __initconst
= {
7310 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1
),
7311 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1
),
7312 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1
),
7313 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1
),
7314 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN
),
7317 #undef TPACPI_FAN_QL
7318 #undef TPACPI_FAN_QI
7320 static int __init
fan_init(struct ibm_init_struct
*iibm
)
7323 unsigned long quirks
;
7325 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
7326 "initializing fan subdriver\n");
7328 mutex_init(&fan_mutex
);
7329 fan_status_access_mode
= TPACPI_FAN_NONE
;
7330 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
7331 fan_control_commands
= 0;
7332 fan_watchdog_maxinterval
= 0;
7333 tp_features
.fan_ctrl_status_undef
= 0;
7334 tp_features
.second_fan
= 0;
7335 fan_control_desired_level
= 7;
7337 TPACPI_ACPIHANDLE_INIT(fans
);
7338 TPACPI_ACPIHANDLE_INIT(gfan
);
7339 TPACPI_ACPIHANDLE_INIT(sfan
);
7341 quirks
= tpacpi_check_quirks(fan_quirk_table
,
7342 ARRAY_SIZE(fan_quirk_table
));
7345 /* 570, 600e/x, 770e, 770x */
7346 fan_status_access_mode
= TPACPI_FAN_RD_ACPI_GFAN
;
7348 /* all other ThinkPads: note that even old-style
7349 * ThinkPad ECs supports the fan control register */
7350 if (likely(acpi_ec_read(fan_status_offset
,
7351 &fan_control_initial_status
))) {
7352 fan_status_access_mode
= TPACPI_FAN_RD_TPEC
;
7353 if (quirks
& TPACPI_FAN_Q1
)
7355 if (quirks
& TPACPI_FAN_2FAN
) {
7356 tp_features
.second_fan
= 1;
7357 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
7358 "secondary fan support enabled\n");
7362 "ThinkPad ACPI EC access misbehaving, "
7363 "fan status and control unavailable\n");
7370 fan_control_access_mode
= TPACPI_FAN_WR_ACPI_SFAN
;
7371 fan_control_commands
|=
7372 TPACPI_FAN_CMD_LEVEL
| TPACPI_FAN_CMD_ENABLE
;
7375 /* gfan without sfan means no fan control */
7376 /* all other models implement TP EC 0x2f control */
7380 fan_control_access_mode
=
7381 TPACPI_FAN_WR_ACPI_FANS
;
7382 fan_control_commands
|=
7383 TPACPI_FAN_CMD_SPEED
|
7384 TPACPI_FAN_CMD_LEVEL
|
7385 TPACPI_FAN_CMD_ENABLE
;
7387 fan_control_access_mode
= TPACPI_FAN_WR_TPEC
;
7388 fan_control_commands
|=
7389 TPACPI_FAN_CMD_LEVEL
|
7390 TPACPI_FAN_CMD_ENABLE
;
7395 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
7396 "fan is %s, modes %d, %d\n",
7397 str_supported(fan_status_access_mode
!= TPACPI_FAN_NONE
||
7398 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
),
7399 fan_status_access_mode
, fan_control_access_mode
);
7401 /* fan control master switch */
7402 if (!fan_control_allowed
) {
7403 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
7404 fan_control_commands
= 0;
7405 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
7406 "fan control features disabled by parameter\n");
7409 /* update fan_control_desired_level */
7410 if (fan_status_access_mode
!= TPACPI_FAN_NONE
)
7411 fan_get_status_safe(NULL
);
7413 if (fan_status_access_mode
!= TPACPI_FAN_NONE
||
7414 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
) {
7415 if (tp_features
.second_fan
) {
7416 /* attach second fan tachometer */
7417 fan_attributes
[ARRAY_SIZE(fan_attributes
)-2] =
7418 &dev_attr_fan_fan2_input
.attr
;
7420 rc
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
7425 rc
= driver_create_file(&tpacpi_hwmon_pdriver
.driver
,
7426 &driver_attr_fan_watchdog
);
7428 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
7437 static void fan_exit(void)
7439 vdbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_FAN
,
7440 "cancelling any pending fan watchdog tasks\n");
7442 /* FIXME: can we really do this unconditionally? */
7443 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
, &fan_attr_group
);
7444 driver_remove_file(&tpacpi_hwmon_pdriver
.driver
,
7445 &driver_attr_fan_watchdog
);
7447 cancel_delayed_work(&fan_watchdog_task
);
7448 flush_workqueue(tpacpi_wq
);
7451 static void fan_suspend(pm_message_t state
)
7455 if (!fan_control_allowed
)
7458 /* Store fan status in cache */
7459 fan_control_resume_level
= 0;
7460 rc
= fan_get_status_safe(&fan_control_resume_level
);
7462 printk(TPACPI_NOTICE
7463 "failed to read fan level for later "
7464 "restore during resume: %d\n", rc
);
7466 /* if it is undefined, don't attempt to restore it.
7468 if (tp_features
.fan_ctrl_status_undef
)
7469 fan_control_resume_level
= 0;
7472 static void fan_resume(void)
7474 u8 current_level
= 7;
7475 bool do_set
= false;
7478 /* DSDT *always* updates status on resume */
7479 tp_features
.fan_ctrl_status_undef
= 0;
7481 if (!fan_control_allowed
||
7482 !fan_control_resume_level
||
7483 (fan_get_status_safe(¤t_level
) < 0))
7486 switch (fan_control_access_mode
) {
7487 case TPACPI_FAN_WR_ACPI_SFAN
:
7488 /* never decrease fan level */
7489 do_set
= (fan_control_resume_level
> current_level
);
7491 case TPACPI_FAN_WR_ACPI_FANS
:
7492 case TPACPI_FAN_WR_TPEC
:
7493 /* never decrease fan level, scale is:
7494 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
7496 * We expect the firmware to set either 7 or AUTO, but we
7497 * handle FULLSPEED out of paranoia.
7499 * So, we can safely only restore FULLSPEED or 7, anything
7500 * else could slow the fan. Restoring AUTO is useless, at
7501 * best that's exactly what the DSDT already set (it is the
7504 * Always keep in mind that the DSDT *will* have set the
7505 * fans to what the vendor supposes is the best level. We
7506 * muck with it only to speed the fan up.
7508 if (fan_control_resume_level
!= 7 &&
7509 !(fan_control_resume_level
& TP_EC_FAN_FULLSPEED
))
7512 do_set
= !(current_level
& TP_EC_FAN_FULLSPEED
) &&
7513 (current_level
!= fan_control_resume_level
);
7519 printk(TPACPI_NOTICE
7520 "restoring fan level to 0x%02x\n",
7521 fan_control_resume_level
);
7522 rc
= fan_set_level_safe(fan_control_resume_level
);
7524 printk(TPACPI_NOTICE
7525 "failed to restore fan level: %d\n", rc
);
7529 static int fan_read(char *p
)
7534 unsigned int speed
= 0;
7536 switch (fan_status_access_mode
) {
7537 case TPACPI_FAN_RD_ACPI_GFAN
:
7538 /* 570, 600e/x, 770e, 770x */
7539 rc
= fan_get_status_safe(&status
);
7543 len
+= sprintf(p
+ len
, "status:\t\t%s\n"
7545 (status
!= 0) ? "enabled" : "disabled", status
);
7548 case TPACPI_FAN_RD_TPEC
:
7549 /* all except 570, 600e/x, 770e, 770x */
7550 rc
= fan_get_status_safe(&status
);
7554 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
7555 (status
!= 0) ? "enabled" : "disabled");
7557 rc
= fan_get_speed(&speed
);
7561 len
+= sprintf(p
+ len
, "speed:\t\t%d\n", speed
);
7563 if (status
& TP_EC_FAN_FULLSPEED
)
7564 /* Disengaged mode takes precedence */
7565 len
+= sprintf(p
+ len
, "level:\t\tdisengaged\n");
7566 else if (status
& TP_EC_FAN_AUTO
)
7567 len
+= sprintf(p
+ len
, "level:\t\tauto\n");
7569 len
+= sprintf(p
+ len
, "level:\t\t%d\n", status
);
7572 case TPACPI_FAN_NONE
:
7574 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
7577 if (fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) {
7578 len
+= sprintf(p
+ len
, "commands:\tlevel <level>");
7580 switch (fan_control_access_mode
) {
7581 case TPACPI_FAN_WR_ACPI_SFAN
:
7582 len
+= sprintf(p
+ len
, " (<level> is 0-7)\n");
7586 len
+= sprintf(p
+ len
, " (<level> is 0-7, "
7587 "auto, disengaged, full-speed)\n");
7592 if (fan_control_commands
& TPACPI_FAN_CMD_ENABLE
)
7593 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n"
7594 "commands:\twatchdog <timeout> (<timeout> "
7595 "is 0 (off), 1-120 (seconds))\n");
7597 if (fan_control_commands
& TPACPI_FAN_CMD_SPEED
)
7598 len
+= sprintf(p
+ len
, "commands:\tspeed <speed>"
7599 " (<speed> is 0-65535)\n");
7604 static int fan_write_cmd_level(const char *cmd
, int *rc
)
7608 if (strlencmp(cmd
, "level auto") == 0)
7609 level
= TP_EC_FAN_AUTO
;
7610 else if ((strlencmp(cmd
, "level disengaged") == 0) |
7611 (strlencmp(cmd
, "level full-speed") == 0))
7612 level
= TP_EC_FAN_FULLSPEED
;
7613 else if (sscanf(cmd
, "level %d", &level
) != 1)
7616 *rc
= fan_set_level_safe(level
);
7618 printk(TPACPI_ERR
"level command accepted for unsupported "
7619 "access mode %d", fan_control_access_mode
);
7621 tpacpi_disclose_usertask("procfs fan",
7622 "set level to %d\n", level
);
7627 static int fan_write_cmd_enable(const char *cmd
, int *rc
)
7629 if (strlencmp(cmd
, "enable") != 0)
7632 *rc
= fan_set_enable();
7634 printk(TPACPI_ERR
"enable command accepted for unsupported "
7635 "access mode %d", fan_control_access_mode
);
7637 tpacpi_disclose_usertask("procfs fan", "enable\n");
7642 static int fan_write_cmd_disable(const char *cmd
, int *rc
)
7644 if (strlencmp(cmd
, "disable") != 0)
7647 *rc
= fan_set_disable();
7649 printk(TPACPI_ERR
"disable command accepted for unsupported "
7650 "access mode %d", fan_control_access_mode
);
7652 tpacpi_disclose_usertask("procfs fan", "disable\n");
7657 static int fan_write_cmd_speed(const char *cmd
, int *rc
)
7662 * Support speed <low> <medium> <high> ? */
7664 if (sscanf(cmd
, "speed %d", &speed
) != 1)
7667 *rc
= fan_set_speed(speed
);
7669 printk(TPACPI_ERR
"speed command accepted for unsupported "
7670 "access mode %d", fan_control_access_mode
);
7672 tpacpi_disclose_usertask("procfs fan",
7673 "set speed to %d\n", speed
);
7678 static int fan_write_cmd_watchdog(const char *cmd
, int *rc
)
7682 if (sscanf(cmd
, "watchdog %d", &interval
) != 1)
7685 if (interval
< 0 || interval
> 120)
7688 fan_watchdog_maxinterval
= interval
;
7689 tpacpi_disclose_usertask("procfs fan",
7690 "set watchdog timer to %d\n",
7697 static int fan_write(char *buf
)
7702 while (!rc
&& (cmd
= next_cmd(&buf
))) {
7703 if (!((fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) &&
7704 fan_write_cmd_level(cmd
, &rc
)) &&
7705 !((fan_control_commands
& TPACPI_FAN_CMD_ENABLE
) &&
7706 (fan_write_cmd_enable(cmd
, &rc
) ||
7707 fan_write_cmd_disable(cmd
, &rc
) ||
7708 fan_write_cmd_watchdog(cmd
, &rc
))) &&
7709 !((fan_control_commands
& TPACPI_FAN_CMD_SPEED
) &&
7710 fan_write_cmd_speed(cmd
, &rc
))
7714 fan_watchdog_reset();
7720 static struct ibm_struct fan_driver_data
= {
7725 .suspend
= fan_suspend
,
7726 .resume
= fan_resume
,
7729 /****************************************************************************
7730 ****************************************************************************
7734 ****************************************************************************
7735 ****************************************************************************/
7738 * HKEY event callout for other subdrivers go here
7739 * (yes, it is ugly, but it is quick, safe, and gets the job done
7741 static void tpacpi_driver_event(const unsigned int hkey_event
)
7743 if (ibm_backlight_device
) {
7744 switch (hkey_event
) {
7745 case TP_HKEY_EV_BRGHT_UP
:
7746 case TP_HKEY_EV_BRGHT_DOWN
:
7747 tpacpi_brightness_notify_change();
7754 static void hotkey_driver_event(const unsigned int scancode
)
7756 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE
+ scancode
);
7759 /* sysfs name ---------------------------------------------------------- */
7760 static ssize_t
thinkpad_acpi_pdev_name_show(struct device
*dev
,
7761 struct device_attribute
*attr
,
7764 return snprintf(buf
, PAGE_SIZE
, "%s\n", TPACPI_NAME
);
7767 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name
=
7768 __ATTR(name
, S_IRUGO
, thinkpad_acpi_pdev_name_show
, NULL
);
7770 /* --------------------------------------------------------------------- */
7773 static struct proc_dir_entry
*proc_dir
;
7776 * Module and infrastructure proble, init and exit handling
7779 static int force_load
;
7781 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
7782 static const char * __init
str_supported(int is_supported
)
7784 static char text_unsupported
[] __initdata
= "not supported";
7786 return (is_supported
)? &text_unsupported
[4] : &text_unsupported
[0];
7788 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
7790 static void ibm_exit(struct ibm_struct
*ibm
)
7792 dbg_printk(TPACPI_DBG_EXIT
, "removing %s\n", ibm
->name
);
7794 list_del_init(&ibm
->all_drivers
);
7796 if (ibm
->flags
.acpi_notify_installed
) {
7797 dbg_printk(TPACPI_DBG_EXIT
,
7798 "%s: acpi_remove_notify_handler\n", ibm
->name
);
7800 acpi_remove_notify_handler(*ibm
->acpi
->handle
,
7802 dispatch_acpi_notify
);
7803 ibm
->flags
.acpi_notify_installed
= 0;
7804 ibm
->flags
.acpi_notify_installed
= 0;
7807 if (ibm
->flags
.proc_created
) {
7808 dbg_printk(TPACPI_DBG_EXIT
,
7809 "%s: remove_proc_entry\n", ibm
->name
);
7810 remove_proc_entry(ibm
->name
, proc_dir
);
7811 ibm
->flags
.proc_created
= 0;
7814 if (ibm
->flags
.acpi_driver_registered
) {
7815 dbg_printk(TPACPI_DBG_EXIT
,
7816 "%s: acpi_bus_unregister_driver\n", ibm
->name
);
7818 acpi_bus_unregister_driver(ibm
->acpi
->driver
);
7819 kfree(ibm
->acpi
->driver
);
7820 ibm
->acpi
->driver
= NULL
;
7821 ibm
->flags
.acpi_driver_registered
= 0;
7824 if (ibm
->flags
.init_called
&& ibm
->exit
) {
7826 ibm
->flags
.init_called
= 0;
7829 dbg_printk(TPACPI_DBG_INIT
, "finished removing %s\n", ibm
->name
);
7832 static int __init
ibm_init(struct ibm_init_struct
*iibm
)
7835 struct ibm_struct
*ibm
= iibm
->data
;
7836 struct proc_dir_entry
*entry
;
7838 BUG_ON(ibm
== NULL
);
7840 INIT_LIST_HEAD(&ibm
->all_drivers
);
7842 if (ibm
->flags
.experimental
&& !experimental
)
7845 dbg_printk(TPACPI_DBG_INIT
,
7846 "probing for %s\n", ibm
->name
);
7849 ret
= iibm
->init(iibm
);
7851 return 0; /* probe failed */
7855 ibm
->flags
.init_called
= 1;
7859 if (ibm
->acpi
->hid
) {
7860 ret
= register_tpacpi_subdriver(ibm
);
7865 if (ibm
->acpi
->notify
) {
7866 ret
= setup_acpi_notify(ibm
);
7867 if (ret
== -ENODEV
) {
7868 printk(TPACPI_NOTICE
"disabling subdriver %s\n",
7878 dbg_printk(TPACPI_DBG_INIT
,
7879 "%s installed\n", ibm
->name
);
7882 entry
= create_proc_entry(ibm
->name
,
7883 S_IFREG
| S_IRUGO
| S_IWUSR
,
7886 printk(TPACPI_ERR
"unable to create proc entry %s\n",
7892 entry
->read_proc
= &dispatch_procfs_read
;
7894 entry
->write_proc
= &dispatch_procfs_write
;
7895 ibm
->flags
.proc_created
= 1;
7898 list_add_tail(&ibm
->all_drivers
, &tpacpi_all_drivers
);
7903 dbg_printk(TPACPI_DBG_INIT
,
7904 "%s: at error exit path with result %d\n",
7908 return (ret
< 0)? ret
: 0;
7913 static bool __pure __init
tpacpi_is_fw_digit(const char c
)
7915 return (c
>= '0' && c
<= '9') || (c
>= 'A' && c
<= 'Z');
7918 /* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
7919 static bool __pure __init
tpacpi_is_valid_fw_id(const char* const s
,
7922 return s
&& strlen(s
) >= 8 &&
7923 tpacpi_is_fw_digit(s
[0]) &&
7924 tpacpi_is_fw_digit(s
[1]) &&
7925 s
[2] == t
&& s
[3] == 'T' &&
7926 tpacpi_is_fw_digit(s
[4]) &&
7927 tpacpi_is_fw_digit(s
[5]) &&
7928 s
[6] == 'W' && s
[7] == 'W';
7931 /* returns 0 - probe ok, or < 0 - probe error.
7932 * Probe ok doesn't mean thinkpad found.
7933 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
7934 static int __must_check __init
get_thinkpad_model_data(
7935 struct thinkpad_id_data
*tp
)
7937 const struct dmi_device
*dev
= NULL
;
7938 char ec_fw_string
[18];
7944 memset(tp
, 0, sizeof(*tp
));
7946 if (dmi_name_in_vendors("IBM"))
7947 tp
->vendor
= PCI_VENDOR_ID_IBM
;
7948 else if (dmi_name_in_vendors("LENOVO"))
7949 tp
->vendor
= PCI_VENDOR_ID_LENOVO
;
7953 s
= dmi_get_system_info(DMI_BIOS_VERSION
);
7954 tp
->bios_version_str
= kstrdup(s
, GFP_KERNEL
);
7955 if (s
&& !tp
->bios_version_str
)
7958 /* Really ancient ThinkPad 240X will fail this, which is fine */
7959 if (!tpacpi_is_valid_fw_id(tp
->bios_version_str
, 'E'))
7962 tp
->bios_model
= tp
->bios_version_str
[0]
7963 | (tp
->bios_version_str
[1] << 8);
7964 tp
->bios_release
= (tp
->bios_version_str
[4] << 8)
7965 | tp
->bios_version_str
[5];
7968 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
7969 * X32 or newer, all Z series; Some models must have an
7970 * up-to-date BIOS or they will not be detected.
7972 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7974 while ((dev
= dmi_find_device(DMI_DEV_TYPE_OEM_STRING
, NULL
, dev
))) {
7975 if (sscanf(dev
->name
,
7976 "IBM ThinkPad Embedded Controller -[%17c",
7977 ec_fw_string
) == 1) {
7978 ec_fw_string
[sizeof(ec_fw_string
) - 1] = 0;
7979 ec_fw_string
[strcspn(ec_fw_string
, " ]")] = 0;
7981 tp
->ec_version_str
= kstrdup(ec_fw_string
, GFP_KERNEL
);
7982 if (!tp
->ec_version_str
)
7985 if (tpacpi_is_valid_fw_id(ec_fw_string
, 'H')) {
7986 tp
->ec_model
= ec_fw_string
[0]
7987 | (ec_fw_string
[1] << 8);
7988 tp
->ec_release
= (ec_fw_string
[4] << 8)
7991 printk(TPACPI_NOTICE
7992 "ThinkPad firmware release %s "
7993 "doesn't match the known patterns\n",
7995 printk(TPACPI_NOTICE
7996 "please report this to %s\n",
8003 s
= dmi_get_system_info(DMI_PRODUCT_VERSION
);
8004 if (s
&& !strnicmp(s
, "ThinkPad", 8)) {
8005 tp
->model_str
= kstrdup(s
, GFP_KERNEL
);
8010 s
= dmi_get_system_info(DMI_PRODUCT_NAME
);
8011 tp
->nummodel_str
= kstrdup(s
, GFP_KERNEL
);
8012 if (s
&& !tp
->nummodel_str
)
8018 static int __init
probe_for_thinkpad(void)
8026 * Non-ancient models have better DMI tagging, but very old models
8027 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
8029 is_thinkpad
= (thinkpad_id
.model_str
!= NULL
) ||
8030 (thinkpad_id
.ec_model
!= 0) ||
8031 tpacpi_is_fw_known();
8033 /* ec is required because many other handles are relative to it */
8034 TPACPI_ACPIHANDLE_INIT(ec
);
8038 "Not yet supported ThinkPad detected!\n");
8042 if (!is_thinkpad
&& !force_load
)
8049 /* Module init, exit, parameters */
8051 static struct ibm_init_struct ibms_init
[] __initdata
= {
8053 .init
= thinkpad_acpi_driver_init
,
8054 .data
= &thinkpad_acpi_driver_data
,
8057 .init
= hotkey_init
,
8058 .data
= &hotkey_driver_data
,
8061 .init
= bluetooth_init
,
8062 .data
= &bluetooth_driver_data
,
8066 .data
= &wan_driver_data
,
8070 .data
= &uwb_driver_data
,
8072 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
8075 .data
= &video_driver_data
,
8080 .data
= &light_driver_data
,
8084 .data
= &cmos_driver_data
,
8088 .data
= &led_driver_data
,
8092 .data
= &beep_driver_data
,
8095 .init
= thermal_init
,
8096 .data
= &thermal_driver_data
,
8099 .data
= &ecdump_driver_data
,
8102 .init
= brightness_init
,
8103 .data
= &brightness_driver_data
,
8106 .data
= &volume_driver_data
,
8110 .data
= &fan_driver_data
,
8114 static int __init
set_ibm_param(const char *val
, struct kernel_param
*kp
)
8117 struct ibm_struct
*ibm
;
8119 if (!kp
|| !kp
->name
|| !val
)
8122 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
8123 ibm
= ibms_init
[i
].data
;
8124 WARN_ON(ibm
== NULL
);
8126 if (!ibm
|| !ibm
->name
)
8129 if (strcmp(ibm
->name
, kp
->name
) == 0 && ibm
->write
) {
8130 if (strlen(val
) > sizeof(ibms_init
[i
].param
) - 2)
8132 strcpy(ibms_init
[i
].param
, val
);
8133 strcat(ibms_init
[i
].param
, ",");
8141 module_param(experimental
, int, 0444);
8142 MODULE_PARM_DESC(experimental
,
8143 "Enables experimental features when non-zero");
8145 module_param_named(debug
, dbg_level
, uint
, 0);
8146 MODULE_PARM_DESC(debug
, "Sets debug level bit-mask");
8148 module_param(force_load
, bool, 0444);
8149 MODULE_PARM_DESC(force_load
,
8150 "Attempts to load the driver even on a "
8151 "mis-identified ThinkPad when true");
8153 module_param_named(fan_control
, fan_control_allowed
, bool, 0444);
8154 MODULE_PARM_DESC(fan_control
,
8155 "Enables setting fan parameters features when true");
8157 module_param_named(brightness_mode
, brightness_mode
, uint
, 0444);
8158 MODULE_PARM_DESC(brightness_mode
,
8159 "Selects brightness control strategy: "
8160 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
8162 module_param(brightness_enable
, uint
, 0444);
8163 MODULE_PARM_DESC(brightness_enable
,
8164 "Enables backlight control when 1, disables when 0");
8166 module_param(hotkey_report_mode
, uint
, 0444);
8167 MODULE_PARM_DESC(hotkey_report_mode
,
8168 "used for backwards compatibility with userspace, "
8169 "see documentation");
8171 #define TPACPI_PARAM(feature) \
8172 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
8173 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
8174 "at module load, see documentation")
8176 TPACPI_PARAM(hotkey
);
8177 TPACPI_PARAM(bluetooth
);
8178 TPACPI_PARAM(video
);
8179 TPACPI_PARAM(light
);
8183 TPACPI_PARAM(ecdump
);
8184 TPACPI_PARAM(brightness
);
8185 TPACPI_PARAM(volume
);
8188 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
8189 module_param(dbg_wlswemul
, uint
, 0444);
8190 MODULE_PARM_DESC(dbg_wlswemul
, "Enables WLSW emulation");
8191 module_param_named(wlsw_state
, tpacpi_wlsw_emulstate
, bool, 0);
8192 MODULE_PARM_DESC(wlsw_state
,
8193 "Initial state of the emulated WLSW switch");
8195 module_param(dbg_bluetoothemul
, uint
, 0444);
8196 MODULE_PARM_DESC(dbg_bluetoothemul
, "Enables bluetooth switch emulation");
8197 module_param_named(bluetooth_state
, tpacpi_bluetooth_emulstate
, bool, 0);
8198 MODULE_PARM_DESC(bluetooth_state
,
8199 "Initial state of the emulated bluetooth switch");
8201 module_param(dbg_wwanemul
, uint
, 0444);
8202 MODULE_PARM_DESC(dbg_wwanemul
, "Enables WWAN switch emulation");
8203 module_param_named(wwan_state
, tpacpi_wwan_emulstate
, bool, 0);
8204 MODULE_PARM_DESC(wwan_state
,
8205 "Initial state of the emulated WWAN switch");
8207 module_param(dbg_uwbemul
, uint
, 0444);
8208 MODULE_PARM_DESC(dbg_uwbemul
, "Enables UWB switch emulation");
8209 module_param_named(uwb_state
, tpacpi_uwb_emulstate
, bool, 0);
8210 MODULE_PARM_DESC(uwb_state
,
8211 "Initial state of the emulated UWB switch");
8214 static void thinkpad_acpi_module_exit(void)
8216 struct ibm_struct
*ibm
, *itmp
;
8218 tpacpi_lifecycle
= TPACPI_LIFE_EXITING
;
8220 list_for_each_entry_safe_reverse(ibm
, itmp
,
8221 &tpacpi_all_drivers
,
8226 dbg_printk(TPACPI_DBG_INIT
, "finished subdriver exit path...\n");
8228 if (tpacpi_inputdev
) {
8229 if (tp_features
.input_device_registered
)
8230 input_unregister_device(tpacpi_inputdev
);
8232 input_free_device(tpacpi_inputdev
);
8236 hwmon_device_unregister(tpacpi_hwmon
);
8238 if (tp_features
.sensors_pdev_attrs_registered
)
8239 device_remove_file(&tpacpi_sensors_pdev
->dev
,
8240 &dev_attr_thinkpad_acpi_pdev_name
);
8241 if (tpacpi_sensors_pdev
)
8242 platform_device_unregister(tpacpi_sensors_pdev
);
8244 platform_device_unregister(tpacpi_pdev
);
8246 if (tp_features
.sensors_pdrv_attrs_registered
)
8247 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver
.driver
);
8248 if (tp_features
.platform_drv_attrs_registered
)
8249 tpacpi_remove_driver_attributes(&tpacpi_pdriver
.driver
);
8251 if (tp_features
.sensors_pdrv_registered
)
8252 platform_driver_unregister(&tpacpi_hwmon_pdriver
);
8254 if (tp_features
.platform_drv_registered
)
8255 platform_driver_unregister(&tpacpi_pdriver
);
8258 remove_proc_entry(TPACPI_PROC_DIR
, acpi_root_dir
);
8261 destroy_workqueue(tpacpi_wq
);
8263 kfree(thinkpad_id
.bios_version_str
);
8264 kfree(thinkpad_id
.ec_version_str
);
8265 kfree(thinkpad_id
.model_str
);
8269 static int __init
thinkpad_acpi_module_init(void)
8273 tpacpi_lifecycle
= TPACPI_LIFE_INIT
;
8275 /* Parameter checking */
8276 if (hotkey_report_mode
> 2)
8279 /* Driver-level probe */
8281 ret
= get_thinkpad_model_data(&thinkpad_id
);
8284 "unable to get DMI data: %d\n", ret
);
8285 thinkpad_acpi_module_exit();
8288 ret
= probe_for_thinkpad();
8290 thinkpad_acpi_module_exit();
8294 /* Driver initialization */
8296 TPACPI_ACPIHANDLE_INIT(ecrd
);
8297 TPACPI_ACPIHANDLE_INIT(ecwr
);
8299 tpacpi_wq
= create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME
);
8301 thinkpad_acpi_module_exit();
8305 proc_dir
= proc_mkdir(TPACPI_PROC_DIR
, acpi_root_dir
);
8308 "unable to create proc dir " TPACPI_PROC_DIR
);
8309 thinkpad_acpi_module_exit();
8313 ret
= platform_driver_register(&tpacpi_pdriver
);
8316 "unable to register main platform driver\n");
8317 thinkpad_acpi_module_exit();
8320 tp_features
.platform_drv_registered
= 1;
8322 ret
= platform_driver_register(&tpacpi_hwmon_pdriver
);
8325 "unable to register hwmon platform driver\n");
8326 thinkpad_acpi_module_exit();
8329 tp_features
.sensors_pdrv_registered
= 1;
8331 ret
= tpacpi_create_driver_attributes(&tpacpi_pdriver
.driver
);
8333 tp_features
.platform_drv_attrs_registered
= 1;
8334 ret
= tpacpi_create_driver_attributes(
8335 &tpacpi_hwmon_pdriver
.driver
);
8339 "unable to create sysfs driver attributes\n");
8340 thinkpad_acpi_module_exit();
8343 tp_features
.sensors_pdrv_attrs_registered
= 1;
8346 /* Device initialization */
8347 tpacpi_pdev
= platform_device_register_simple(TPACPI_DRVR_NAME
, -1,
8349 if (IS_ERR(tpacpi_pdev
)) {
8350 ret
= PTR_ERR(tpacpi_pdev
);
8352 printk(TPACPI_ERR
"unable to register platform device\n");
8353 thinkpad_acpi_module_exit();
8356 tpacpi_sensors_pdev
= platform_device_register_simple(
8357 TPACPI_HWMON_DRVR_NAME
,
8359 if (IS_ERR(tpacpi_sensors_pdev
)) {
8360 ret
= PTR_ERR(tpacpi_sensors_pdev
);
8361 tpacpi_sensors_pdev
= NULL
;
8363 "unable to register hwmon platform device\n");
8364 thinkpad_acpi_module_exit();
8367 ret
= device_create_file(&tpacpi_sensors_pdev
->dev
,
8368 &dev_attr_thinkpad_acpi_pdev_name
);
8371 "unable to create sysfs hwmon device attributes\n");
8372 thinkpad_acpi_module_exit();
8375 tp_features
.sensors_pdev_attrs_registered
= 1;
8376 tpacpi_hwmon
= hwmon_device_register(&tpacpi_sensors_pdev
->dev
);
8377 if (IS_ERR(tpacpi_hwmon
)) {
8378 ret
= PTR_ERR(tpacpi_hwmon
);
8379 tpacpi_hwmon
= NULL
;
8380 printk(TPACPI_ERR
"unable to register hwmon device\n");
8381 thinkpad_acpi_module_exit();
8384 mutex_init(&tpacpi_inputdev_send_mutex
);
8385 tpacpi_inputdev
= input_allocate_device();
8386 if (!tpacpi_inputdev
) {
8387 printk(TPACPI_ERR
"unable to allocate input device\n");
8388 thinkpad_acpi_module_exit();
8391 /* Prepare input device, but don't register */
8392 tpacpi_inputdev
->name
= "ThinkPad Extra Buttons";
8393 tpacpi_inputdev
->phys
= TPACPI_DRVR_NAME
"/input0";
8394 tpacpi_inputdev
->id
.bustype
= BUS_HOST
;
8395 tpacpi_inputdev
->id
.vendor
= (thinkpad_id
.vendor
) ?
8396 thinkpad_id
.vendor
:
8398 tpacpi_inputdev
->id
.product
= TPACPI_HKEY_INPUT_PRODUCT
;
8399 tpacpi_inputdev
->id
.version
= TPACPI_HKEY_INPUT_VERSION
;
8400 tpacpi_inputdev
->dev
.parent
= &tpacpi_pdev
->dev
;
8402 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
8403 ret
= ibm_init(&ibms_init
[i
]);
8404 if (ret
>= 0 && *ibms_init
[i
].param
)
8405 ret
= ibms_init
[i
].data
->write(ibms_init
[i
].param
);
8407 thinkpad_acpi_module_exit();
8411 ret
= input_register_device(tpacpi_inputdev
);
8413 printk(TPACPI_ERR
"unable to register input device\n");
8414 thinkpad_acpi_module_exit();
8417 tp_features
.input_device_registered
= 1;
8420 tpacpi_lifecycle
= TPACPI_LIFE_RUNNING
;
8424 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME
);
8427 * This will autoload the driver in almost every ThinkPad
8428 * in widespread use.
8430 * Only _VERY_ old models, like the 240, 240x and 570 lack
8431 * the HKEY event interface.
8433 MODULE_DEVICE_TABLE(acpi
, ibm_htk_device_ids
);
8436 * DMI matching for module autoloading
8438 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
8439 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
8441 * Only models listed in thinkwiki will be supported, so add yours
8442 * if it is not there yet.
8444 #define IBM_BIOS_MODULE_ALIAS(__type) \
8445 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
8447 /* Ancient thinkpad BIOSes have to be identified by
8448 * BIOS type or model number, and there are far less
8449 * BIOS types than model numbers... */
8450 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
8452 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
8453 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
8454 MODULE_DESCRIPTION(TPACPI_DESC
);
8455 MODULE_VERSION(TPACPI_VERSION
);
8456 MODULE_LICENSE("GPL");
8458 module_init(thinkpad_acpi_module_init
);
8459 module_exit(thinkpad_acpi_module_exit
);