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 "0.22"
25 #define TPACPI_SYSFS_VERSION 0x020300
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 */
148 /****************************************************************************
152 #define TPACPI_NAME "thinkpad"
153 #define TPACPI_DESC "ThinkPad ACPI Extras"
154 #define TPACPI_FILE TPACPI_NAME "_acpi"
155 #define TPACPI_URL "http://ibm-acpi.sf.net/"
156 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
158 #define TPACPI_PROC_DIR "ibm"
159 #define TPACPI_ACPI_EVENT_PREFIX "ibm"
160 #define TPACPI_DRVR_NAME TPACPI_FILE
161 #define TPACPI_DRVR_SHORTNAME "tpacpi"
162 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
164 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
165 #define TPACPI_WORKQUEUE_NAME "ktpacpid"
167 #define TPACPI_MAX_ACPI_ARGS 3
169 /* rfkill switches */
171 TPACPI_RFK_BLUETOOTH_SW_ID
= 0,
172 TPACPI_RFK_WWAN_SW_ID
,
173 TPACPI_RFK_UWB_SW_ID
,
177 #define TPACPI_LOG TPACPI_FILE ": "
178 #define TPACPI_EMERG KERN_EMERG TPACPI_LOG
179 #define TPACPI_ALERT KERN_ALERT TPACPI_LOG
180 #define TPACPI_CRIT KERN_CRIT TPACPI_LOG
181 #define TPACPI_ERR KERN_ERR TPACPI_LOG
182 #define TPACPI_WARN KERN_WARNING TPACPI_LOG
183 #define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
184 #define TPACPI_INFO KERN_INFO TPACPI_LOG
185 #define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
187 /* Debugging printk groups */
188 #define TPACPI_DBG_ALL 0xffff
189 #define TPACPI_DBG_DISCLOSETASK 0x8000
190 #define TPACPI_DBG_INIT 0x0001
191 #define TPACPI_DBG_EXIT 0x0002
192 #define TPACPI_DBG_RFKILL 0x0004
193 #define TPACPI_DBG_HKEY 0x0008
194 #define TPACPI_DBG_FAN 0x0010
196 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
197 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
198 #define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
201 /****************************************************************************
202 * Driver-wide structs and misc. variables
207 struct tp_acpi_drv_struct
{
208 const struct acpi_device_id
*hid
;
209 struct acpi_driver
*driver
;
211 void (*notify
) (struct ibm_struct
*, u32
);
214 struct acpi_device
*device
;
220 int (*read
) (char *);
221 int (*write
) (char *);
223 void (*resume
) (void);
224 void (*suspend
) (pm_message_t state
);
225 void (*shutdown
) (void);
227 struct list_head all_drivers
;
229 struct tp_acpi_drv_struct
*acpi
;
232 u8 acpi_driver_registered
:1;
233 u8 acpi_notify_installed
:1;
240 struct ibm_init_struct
{
243 int (*init
) (struct ibm_init_struct
*);
244 struct ibm_struct
*data
;
248 #ifdef CONFIG_THINKPAD_ACPI_BAY
261 u32 bright_16levels
:1;
262 u32 bright_acpimode
:1;
265 u32 fan_ctrl_status_undef
:1;
266 u32 input_device_registered
:1;
267 u32 platform_drv_registered
:1;
268 u32 platform_drv_attrs_registered
:1;
269 u32 sensors_pdrv_registered
:1;
270 u32 sensors_pdrv_attrs_registered
:1;
271 u32 sensors_pdev_attrs_registered
:1;
272 u32 hotkey_poll_active
:1;
276 u16 hotkey_mask_ff
:1;
277 u16 bright_cmos_ec_unsync
:1;
280 struct thinkpad_id_data
{
281 unsigned int vendor
; /* ThinkPad vendor:
282 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
284 char *bios_version_str
; /* Something like 1ZET51WW (1.03z) */
285 char *ec_version_str
; /* Something like 1ZHT51WW-1.04a */
287 u16 bios_model
; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
290 char *model_str
; /* ThinkPad T43 */
291 char *nummodel_str
; /* 9384A9C for a 9384-A9C model */
293 static struct thinkpad_id_data thinkpad_id
;
296 TPACPI_LIFE_INIT
= 0,
301 static int experimental
;
302 static u32 dbg_level
;
304 static struct workqueue_struct
*tpacpi_wq
;
306 /* Special LED class that can defer work */
307 struct tpacpi_led_classdev
{
308 struct led_classdev led_classdev
;
309 struct work_struct work
;
310 enum led_brightness new_brightness
;
314 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
315 static int dbg_wlswemul
;
316 static int tpacpi_wlsw_emulstate
;
317 static int dbg_bluetoothemul
;
318 static int tpacpi_bluetooth_emulstate
;
319 static int dbg_wwanemul
;
320 static int tpacpi_wwan_emulstate
;
321 static int dbg_uwbemul
;
322 static int tpacpi_uwb_emulstate
;
326 /*************************************************************************
330 #define dbg_printk(a_dbg_level, format, arg...) \
331 do { if (dbg_level & (a_dbg_level)) \
332 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
335 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
336 #define vdbg_printk dbg_printk
337 static const char *str_supported(int is_supported
);
339 #define vdbg_printk(a_dbg_level, format, arg...) \
343 static void tpacpi_log_usertask(const char * const what
)
345 printk(TPACPI_DEBUG
"%s: access by process with PID %d\n",
346 what
, task_tgid_vnr(current
));
349 #define tpacpi_disclose_usertask(what, format, arg...) \
352 (dbg_level & TPACPI_DBG_DISCLOSETASK) && \
353 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
354 printk(TPACPI_DEBUG "%s: PID %d: " format, \
355 what, task_tgid_vnr(current), ## arg); \
359 /****************************************************************************
360 ****************************************************************************
362 * ACPI Helpers and device model
364 ****************************************************************************
365 ****************************************************************************/
367 /*************************************************************************
371 static acpi_handle root_handle
;
373 #define TPACPI_HANDLE(object, parent, paths...) \
374 static acpi_handle object##_handle; \
375 static acpi_handle *object##_parent = &parent##_handle; \
376 static char *object##_path; \
377 static char *object##_paths[] = { paths }
379 TPACPI_HANDLE(ec
, root
, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
380 "\\_SB.PCI.ISA.EC", /* 570 */
381 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
382 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
383 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
384 "\\_SB.PCI0.ICH3.EC0", /* R31 */
385 "\\_SB.PCI0.LPC.EC", /* all others */
388 TPACPI_HANDLE(ecrd
, ec
, "ECRD"); /* 570 */
389 TPACPI_HANDLE(ecwr
, ec
, "ECWR"); /* 570 */
391 TPACPI_HANDLE(cmos
, root
, "\\UCMS", /* R50, R50e, R50p, R51, */
393 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
394 "\\CMS", /* R40, R40e */
397 TPACPI_HANDLE(hkey
, ec
, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
398 "^HKEY", /* R30, R31 */
399 "HKEY", /* all others */
402 TPACPI_HANDLE(vid
, root
, "\\_SB.PCI.AGP.VGA", /* 570 */
403 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
404 "\\_SB.PCI0.VID0", /* 770e */
405 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
406 "\\_SB.PCI0.AGP.VID", /* all others */
410 /*************************************************************************
414 static int acpi_evalf(acpi_handle handle
,
415 void *res
, char *method
, char *fmt
, ...)
418 struct acpi_object_list params
;
419 union acpi_object in_objs
[TPACPI_MAX_ACPI_ARGS
];
420 struct acpi_buffer result
, *resultp
;
421 union acpi_object out_obj
;
429 printk(TPACPI_ERR
"acpi_evalf() called with empty format\n");
442 params
.pointer
= &in_objs
[0];
449 in_objs
[params
.count
].integer
.value
= va_arg(ap
, int);
450 in_objs
[params
.count
++].type
= ACPI_TYPE_INTEGER
;
452 /* add more types as needed */
454 printk(TPACPI_ERR
"acpi_evalf() called "
455 "with invalid format character '%c'\n", c
);
461 if (res_type
!= 'v') {
462 result
.length
= sizeof(out_obj
);
463 result
.pointer
= &out_obj
;
468 status
= acpi_evaluate_object(handle
, method
, ¶ms
, resultp
);
473 *(int *)res
= out_obj
.integer
.value
;
474 success
= status
== AE_OK
&& out_obj
.type
== ACPI_TYPE_INTEGER
;
477 success
= status
== AE_OK
;
479 /* add more types as needed */
481 printk(TPACPI_ERR
"acpi_evalf() called "
482 "with invalid format character '%c'\n", res_type
);
486 if (!success
&& !quiet
)
487 printk(TPACPI_ERR
"acpi_evalf(%s, %s, ...) failed: %d\n",
488 method
, fmt0
, status
);
493 static int acpi_ec_read(int i
, u8
*p
)
498 if (!acpi_evalf(ecrd_handle
, &v
, NULL
, "dd", i
))
502 if (ec_read(i
, p
) < 0)
509 static int acpi_ec_write(int i
, u8 v
)
512 if (!acpi_evalf(ecwr_handle
, NULL
, NULL
, "vdd", i
, v
))
515 if (ec_write(i
, v
) < 0)
522 #if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_BAY)
523 static int _sta(acpi_handle handle
)
527 if (!handle
|| !acpi_evalf(handle
, &status
, "_STA", "d"))
534 static int issue_thinkpad_cmos_command(int cmos_cmd
)
539 if (!acpi_evalf(cmos_handle
, NULL
, NULL
, "vd", cmos_cmd
))
545 /*************************************************************************
549 #define TPACPI_ACPIHANDLE_INIT(object) \
550 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
551 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
553 static void drv_acpi_handle_init(char *name
,
554 acpi_handle
*handle
, acpi_handle parent
,
555 char **paths
, int num_paths
, char **path
)
560 vdbg_printk(TPACPI_DBG_INIT
, "trying to locate ACPI handle for %s\n",
563 for (i
= 0; i
< num_paths
; i
++) {
564 status
= acpi_get_handle(parent
, paths
[i
], handle
);
565 if (ACPI_SUCCESS(status
)) {
567 dbg_printk(TPACPI_DBG_INIT
,
568 "Found ACPI handle %s for %s\n",
574 vdbg_printk(TPACPI_DBG_INIT
, "ACPI handle for %s not found\n",
579 static void dispatch_acpi_notify(acpi_handle handle
, u32 event
, void *data
)
581 struct ibm_struct
*ibm
= data
;
583 if (tpacpi_lifecycle
!= TPACPI_LIFE_RUNNING
)
586 if (!ibm
|| !ibm
->acpi
|| !ibm
->acpi
->notify
)
589 ibm
->acpi
->notify(ibm
, event
);
592 static int __init
setup_acpi_notify(struct ibm_struct
*ibm
)
599 if (!*ibm
->acpi
->handle
)
602 vdbg_printk(TPACPI_DBG_INIT
,
603 "setting up ACPI notify for %s\n", ibm
->name
);
605 rc
= acpi_bus_get_device(*ibm
->acpi
->handle
, &ibm
->acpi
->device
);
607 printk(TPACPI_ERR
"acpi_bus_get_device(%s) failed: %d\n",
612 ibm
->acpi
->device
->driver_data
= ibm
;
613 sprintf(acpi_device_class(ibm
->acpi
->device
), "%s/%s",
614 TPACPI_ACPI_EVENT_PREFIX
,
617 status
= acpi_install_notify_handler(*ibm
->acpi
->handle
,
618 ibm
->acpi
->type
, dispatch_acpi_notify
, ibm
);
619 if (ACPI_FAILURE(status
)) {
620 if (status
== AE_ALREADY_EXISTS
) {
622 "another device driver is already "
623 "handling %s events\n", ibm
->name
);
626 "acpi_install_notify_handler(%s) failed: %d\n",
631 ibm
->flags
.acpi_notify_installed
= 1;
635 static int __init
tpacpi_device_add(struct acpi_device
*device
)
640 static int __init
register_tpacpi_subdriver(struct ibm_struct
*ibm
)
644 dbg_printk(TPACPI_DBG_INIT
,
645 "registering %s as an ACPI driver\n", ibm
->name
);
649 ibm
->acpi
->driver
= kzalloc(sizeof(struct acpi_driver
), GFP_KERNEL
);
650 if (!ibm
->acpi
->driver
) {
652 "failed to allocate memory for ibm->acpi->driver\n");
656 sprintf(ibm
->acpi
->driver
->name
, "%s_%s", TPACPI_NAME
, ibm
->name
);
657 ibm
->acpi
->driver
->ids
= ibm
->acpi
->hid
;
659 ibm
->acpi
->driver
->ops
.add
= &tpacpi_device_add
;
661 rc
= acpi_bus_register_driver(ibm
->acpi
->driver
);
663 printk(TPACPI_ERR
"acpi_bus_register_driver(%s) failed: %d\n",
665 kfree(ibm
->acpi
->driver
);
666 ibm
->acpi
->driver
= NULL
;
668 ibm
->flags
.acpi_driver_registered
= 1;
674 /****************************************************************************
675 ****************************************************************************
679 ****************************************************************************
680 ****************************************************************************/
682 static int dispatch_procfs_read(char *page
, char **start
, off_t off
,
683 int count
, int *eof
, void *data
)
685 struct ibm_struct
*ibm
= data
;
688 if (!ibm
|| !ibm
->read
)
691 len
= ibm
->read(page
);
695 if (len
<= off
+ count
)
707 static int dispatch_procfs_write(struct file
*file
,
708 const char __user
*userbuf
,
709 unsigned long count
, void *data
)
711 struct ibm_struct
*ibm
= data
;
715 if (!ibm
|| !ibm
->write
)
718 kernbuf
= kmalloc(count
+ 2, GFP_KERNEL
);
722 if (copy_from_user(kernbuf
, userbuf
, count
)) {
728 strcat(kernbuf
, ",");
729 ret
= ibm
->write(kernbuf
);
738 static char *next_cmd(char **cmds
)
743 while ((end
= strchr(start
, ',')) && end
== start
)
755 /****************************************************************************
756 ****************************************************************************
758 * Device model: input, hwmon and platform
760 ****************************************************************************
761 ****************************************************************************/
763 static struct platform_device
*tpacpi_pdev
;
764 static struct platform_device
*tpacpi_sensors_pdev
;
765 static struct device
*tpacpi_hwmon
;
766 static struct input_dev
*tpacpi_inputdev
;
767 static struct mutex tpacpi_inputdev_send_mutex
;
768 static LIST_HEAD(tpacpi_all_drivers
);
770 static int tpacpi_suspend_handler(struct platform_device
*pdev
,
773 struct ibm_struct
*ibm
, *itmp
;
775 list_for_each_entry_safe(ibm
, itmp
,
779 (ibm
->suspend
)(state
);
785 static int tpacpi_resume_handler(struct platform_device
*pdev
)
787 struct ibm_struct
*ibm
, *itmp
;
789 list_for_each_entry_safe(ibm
, itmp
,
799 static void tpacpi_shutdown_handler(struct platform_device
*pdev
)
801 struct ibm_struct
*ibm
, *itmp
;
803 list_for_each_entry_safe(ibm
, itmp
,
811 static struct platform_driver tpacpi_pdriver
= {
813 .name
= TPACPI_DRVR_NAME
,
814 .owner
= THIS_MODULE
,
816 .suspend
= tpacpi_suspend_handler
,
817 .resume
= tpacpi_resume_handler
,
818 .shutdown
= tpacpi_shutdown_handler
,
821 static struct platform_driver tpacpi_hwmon_pdriver
= {
823 .name
= TPACPI_HWMON_DRVR_NAME
,
824 .owner
= THIS_MODULE
,
828 /*************************************************************************
829 * sysfs support helpers
832 struct attribute_set
{
833 unsigned int members
, max_members
;
834 struct attribute_group group
;
837 struct attribute_set_obj
{
838 struct attribute_set s
;
840 } __attribute__((packed
));
842 static struct attribute_set
*create_attr_set(unsigned int max_members
,
845 struct attribute_set_obj
*sobj
;
847 if (max_members
== 0)
850 /* Allocates space for implicit NULL at the end too */
851 sobj
= kzalloc(sizeof(struct attribute_set_obj
) +
852 max_members
* sizeof(struct attribute
*),
856 sobj
->s
.max_members
= max_members
;
857 sobj
->s
.group
.attrs
= &sobj
->a
;
858 sobj
->s
.group
.name
= name
;
863 #define destroy_attr_set(_set) \
866 /* not multi-threaded safe, use it in a single thread per set */
867 static int add_to_attr_set(struct attribute_set
*s
, struct attribute
*attr
)
872 if (s
->members
>= s
->max_members
)
875 s
->group
.attrs
[s
->members
] = attr
;
881 static int add_many_to_attr_set(struct attribute_set
*s
,
882 struct attribute
**attr
,
887 for (i
= 0; i
< count
; i
++) {
888 res
= add_to_attr_set(s
, attr
[i
]);
896 static void delete_attr_set(struct attribute_set
*s
, struct kobject
*kobj
)
898 sysfs_remove_group(kobj
, &s
->group
);
902 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
903 sysfs_create_group(_kobj, &_attr_set->group)
905 static int parse_strtoul(const char *buf
,
906 unsigned long max
, unsigned long *value
)
910 while (*buf
&& isspace(*buf
))
912 *value
= simple_strtoul(buf
, &endp
, 0);
913 while (*endp
&& isspace(*endp
))
915 if (*endp
|| *value
> max
)
921 static void tpacpi_disable_brightness_delay(void)
923 if (acpi_evalf(hkey_handle
, NULL
, "PWMS", "qvd", 0))
925 "ACPI backlight control delay disabled\n");
928 static int __init
tpacpi_query_bcl_levels(acpi_handle handle
)
930 struct acpi_buffer buffer
= { ACPI_ALLOCATE_BUFFER
, NULL
};
931 union acpi_object
*obj
;
934 if (ACPI_SUCCESS(acpi_evaluate_object(handle
, NULL
, NULL
, &buffer
))) {
935 obj
= (union acpi_object
*)buffer
.pointer
;
936 if (!obj
|| (obj
->type
!= ACPI_TYPE_PACKAGE
)) {
937 printk(TPACPI_ERR
"Unknown _BCL data, "
938 "please report this to %s\n", TPACPI_MAIL
);
941 rc
= obj
->package
.count
;
947 kfree(buffer
.pointer
);
951 static acpi_status __init
tpacpi_acpi_walk_find_bcl(acpi_handle handle
,
952 u32 lvl
, void *context
, void **rv
)
954 char name
[ACPI_PATH_SEGMENT_LENGTH
];
955 struct acpi_buffer buffer
= { sizeof(name
), &name
};
957 if (ACPI_SUCCESS(acpi_get_name(handle
, ACPI_SINGLE_NAME
, &buffer
)) &&
958 !strncmp("_BCL", name
, sizeof(name
) - 1)) {
960 **(int **)rv
= tpacpi_query_bcl_levels(handle
);
961 return AE_CTRL_TERMINATE
;
968 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
970 static int __init
tpacpi_check_std_acpi_brightness_support(void)
974 void *bcl_ptr
= &bcl_levels
;
977 TPACPI_ACPIHANDLE_INIT(vid
);
983 * Search for a _BCL method, and execute it. This is safe on all
984 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
985 * BIOS in ACPI backlight control mode. We do NOT have to care
986 * about calling the _BCL method in an enabled video device, any
987 * will do for our purposes.
990 status
= acpi_walk_namespace(ACPI_TYPE_METHOD
, vid_handle
, 3,
991 tpacpi_acpi_walk_find_bcl
, NULL
,
994 if (ACPI_SUCCESS(status
) && bcl_levels
> 2) {
995 tp_features
.bright_acpimode
= 1;
996 return (bcl_levels
- 2);
1002 static int __init
tpacpi_new_rfkill(const unsigned int id
,
1003 struct rfkill
**rfk
,
1004 const enum rfkill_type rfktype
,
1006 const bool set_default
,
1007 int (*toggle_radio
)(void *, enum rfkill_state
),
1008 int (*get_state
)(void *, enum rfkill_state
*))
1011 enum rfkill_state initial_state
= RFKILL_STATE_SOFT_BLOCKED
;
1013 res
= get_state(NULL
, &initial_state
);
1016 "failed to read initial state for %s, error %d; "
1017 "will turn radio off\n", name
, res
);
1018 } else if (set_default
) {
1019 /* try to set the initial state as the default for the rfkill
1020 * type, since we ask the firmware to preserve it across S5 in
1022 if (rfkill_set_default(rfktype
,
1023 (initial_state
== RFKILL_STATE_UNBLOCKED
) ?
1024 RFKILL_STATE_UNBLOCKED
:
1025 RFKILL_STATE_SOFT_BLOCKED
) == -EPERM
)
1026 vdbg_printk(TPACPI_DBG_RFKILL
,
1027 "Default state for %s cannot be changed\n",
1031 *rfk
= rfkill_allocate(&tpacpi_pdev
->dev
, rfktype
);
1034 "failed to allocate memory for rfkill class\n");
1038 (*rfk
)->name
= name
;
1039 (*rfk
)->get_state
= get_state
;
1040 (*rfk
)->toggle_radio
= toggle_radio
;
1041 (*rfk
)->state
= initial_state
;
1043 res
= rfkill_register(*rfk
);
1046 "failed to register %s rfkill switch: %d\n",
1056 static void printk_deprecated_attribute(const char * const what
,
1057 const char * const details
)
1059 tpacpi_log_usertask("deprecated sysfs attribute");
1060 printk(TPACPI_WARN
"WARNING: sysfs attribute %s is deprecated and "
1061 "will be removed. %s\n",
1065 static void printk_deprecated_rfkill_attribute(const char * const what
)
1067 printk_deprecated_attribute(what
,
1068 "Please switch to generic rfkill before year 2010");
1071 /*************************************************************************
1072 * thinkpad-acpi driver attributes
1075 /* interface_version --------------------------------------------------- */
1076 static ssize_t
tpacpi_driver_interface_version_show(
1077 struct device_driver
*drv
,
1080 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", TPACPI_SYSFS_VERSION
);
1083 static DRIVER_ATTR(interface_version
, S_IRUGO
,
1084 tpacpi_driver_interface_version_show
, NULL
);
1086 /* debug_level --------------------------------------------------------- */
1087 static ssize_t
tpacpi_driver_debug_show(struct device_driver
*drv
,
1090 return snprintf(buf
, PAGE_SIZE
, "0x%04x\n", dbg_level
);
1093 static ssize_t
tpacpi_driver_debug_store(struct device_driver
*drv
,
1094 const char *buf
, size_t count
)
1098 if (parse_strtoul(buf
, 0xffff, &t
))
1106 static DRIVER_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
1107 tpacpi_driver_debug_show
, tpacpi_driver_debug_store
);
1109 /* version ------------------------------------------------------------- */
1110 static ssize_t
tpacpi_driver_version_show(struct device_driver
*drv
,
1113 return snprintf(buf
, PAGE_SIZE
, "%s v%s\n",
1114 TPACPI_DESC
, TPACPI_VERSION
);
1117 static DRIVER_ATTR(version
, S_IRUGO
,
1118 tpacpi_driver_version_show
, NULL
);
1120 /* --------------------------------------------------------------------- */
1122 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1124 static void tpacpi_send_radiosw_update(void);
1126 /* wlsw_emulstate ------------------------------------------------------ */
1127 static ssize_t
tpacpi_driver_wlsw_emulstate_show(struct device_driver
*drv
,
1130 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_wlsw_emulstate
);
1133 static ssize_t
tpacpi_driver_wlsw_emulstate_store(struct device_driver
*drv
,
1134 const char *buf
, size_t count
)
1138 if (parse_strtoul(buf
, 1, &t
))
1141 if (tpacpi_wlsw_emulstate
!= t
) {
1142 tpacpi_wlsw_emulstate
= !!t
;
1143 tpacpi_send_radiosw_update();
1145 tpacpi_wlsw_emulstate
= !!t
;
1150 static DRIVER_ATTR(wlsw_emulstate
, S_IWUSR
| S_IRUGO
,
1151 tpacpi_driver_wlsw_emulstate_show
,
1152 tpacpi_driver_wlsw_emulstate_store
);
1154 /* bluetooth_emulstate ------------------------------------------------- */
1155 static ssize_t
tpacpi_driver_bluetooth_emulstate_show(
1156 struct device_driver
*drv
,
1159 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_bluetooth_emulstate
);
1162 static ssize_t
tpacpi_driver_bluetooth_emulstate_store(
1163 struct device_driver
*drv
,
1164 const char *buf
, size_t count
)
1168 if (parse_strtoul(buf
, 1, &t
))
1171 tpacpi_bluetooth_emulstate
= !!t
;
1176 static DRIVER_ATTR(bluetooth_emulstate
, S_IWUSR
| S_IRUGO
,
1177 tpacpi_driver_bluetooth_emulstate_show
,
1178 tpacpi_driver_bluetooth_emulstate_store
);
1180 /* wwan_emulstate ------------------------------------------------- */
1181 static ssize_t
tpacpi_driver_wwan_emulstate_show(
1182 struct device_driver
*drv
,
1185 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_wwan_emulstate
);
1188 static ssize_t
tpacpi_driver_wwan_emulstate_store(
1189 struct device_driver
*drv
,
1190 const char *buf
, size_t count
)
1194 if (parse_strtoul(buf
, 1, &t
))
1197 tpacpi_wwan_emulstate
= !!t
;
1202 static DRIVER_ATTR(wwan_emulstate
, S_IWUSR
| S_IRUGO
,
1203 tpacpi_driver_wwan_emulstate_show
,
1204 tpacpi_driver_wwan_emulstate_store
);
1206 /* uwb_emulstate ------------------------------------------------- */
1207 static ssize_t
tpacpi_driver_uwb_emulstate_show(
1208 struct device_driver
*drv
,
1211 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_uwb_emulstate
);
1214 static ssize_t
tpacpi_driver_uwb_emulstate_store(
1215 struct device_driver
*drv
,
1216 const char *buf
, size_t count
)
1220 if (parse_strtoul(buf
, 1, &t
))
1223 tpacpi_uwb_emulstate
= !!t
;
1228 static DRIVER_ATTR(uwb_emulstate
, S_IWUSR
| S_IRUGO
,
1229 tpacpi_driver_uwb_emulstate_show
,
1230 tpacpi_driver_uwb_emulstate_store
);
1233 /* --------------------------------------------------------------------- */
1235 static struct driver_attribute
*tpacpi_driver_attributes
[] = {
1236 &driver_attr_debug_level
, &driver_attr_version
,
1237 &driver_attr_interface_version
,
1240 static int __init
tpacpi_create_driver_attributes(struct device_driver
*drv
)
1246 while (!res
&& i
< ARRAY_SIZE(tpacpi_driver_attributes
)) {
1247 res
= driver_create_file(drv
, tpacpi_driver_attributes
[i
]);
1251 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1252 if (!res
&& dbg_wlswemul
)
1253 res
= driver_create_file(drv
, &driver_attr_wlsw_emulstate
);
1254 if (!res
&& dbg_bluetoothemul
)
1255 res
= driver_create_file(drv
, &driver_attr_bluetooth_emulstate
);
1256 if (!res
&& dbg_wwanemul
)
1257 res
= driver_create_file(drv
, &driver_attr_wwan_emulstate
);
1258 if (!res
&& dbg_uwbemul
)
1259 res
= driver_create_file(drv
, &driver_attr_uwb_emulstate
);
1265 static void tpacpi_remove_driver_attributes(struct device_driver
*drv
)
1269 for (i
= 0; i
< ARRAY_SIZE(tpacpi_driver_attributes
); i
++)
1270 driver_remove_file(drv
, tpacpi_driver_attributes
[i
]);
1272 #ifdef THINKPAD_ACPI_DEBUGFACILITIES
1273 driver_remove_file(drv
, &driver_attr_wlsw_emulstate
);
1274 driver_remove_file(drv
, &driver_attr_bluetooth_emulstate
);
1275 driver_remove_file(drv
, &driver_attr_wwan_emulstate
);
1276 driver_remove_file(drv
, &driver_attr_uwb_emulstate
);
1280 /****************************************************************************
1281 ****************************************************************************
1285 ****************************************************************************
1286 ****************************************************************************/
1288 /*************************************************************************
1289 * thinkpad-acpi init subdriver
1292 static int __init
thinkpad_acpi_driver_init(struct ibm_init_struct
*iibm
)
1294 printk(TPACPI_INFO
"%s v%s\n", TPACPI_DESC
, TPACPI_VERSION
);
1295 printk(TPACPI_INFO
"%s\n", TPACPI_URL
);
1297 printk(TPACPI_INFO
"ThinkPad BIOS %s, EC %s\n",
1298 (thinkpad_id
.bios_version_str
) ?
1299 thinkpad_id
.bios_version_str
: "unknown",
1300 (thinkpad_id
.ec_version_str
) ?
1301 thinkpad_id
.ec_version_str
: "unknown");
1303 if (thinkpad_id
.vendor
&& thinkpad_id
.model_str
)
1304 printk(TPACPI_INFO
"%s %s, model %s\n",
1305 (thinkpad_id
.vendor
== PCI_VENDOR_ID_IBM
) ?
1306 "IBM" : ((thinkpad_id
.vendor
==
1307 PCI_VENDOR_ID_LENOVO
) ?
1308 "Lenovo" : "Unknown vendor"),
1309 thinkpad_id
.model_str
,
1310 (thinkpad_id
.nummodel_str
) ?
1311 thinkpad_id
.nummodel_str
: "unknown");
1316 static int thinkpad_acpi_driver_read(char *p
)
1320 len
+= sprintf(p
+ len
, "driver:\t\t%s\n", TPACPI_DESC
);
1321 len
+= sprintf(p
+ len
, "version:\t%s\n", TPACPI_VERSION
);
1326 static struct ibm_struct thinkpad_acpi_driver_data
= {
1328 .read
= thinkpad_acpi_driver_read
,
1331 /*************************************************************************
1335 enum { /* hot key scan codes (derived from ACPI DSDT) */
1336 TP_ACPI_HOTKEYSCAN_FNF1
= 0,
1337 TP_ACPI_HOTKEYSCAN_FNF2
,
1338 TP_ACPI_HOTKEYSCAN_FNF3
,
1339 TP_ACPI_HOTKEYSCAN_FNF4
,
1340 TP_ACPI_HOTKEYSCAN_FNF5
,
1341 TP_ACPI_HOTKEYSCAN_FNF6
,
1342 TP_ACPI_HOTKEYSCAN_FNF7
,
1343 TP_ACPI_HOTKEYSCAN_FNF8
,
1344 TP_ACPI_HOTKEYSCAN_FNF9
,
1345 TP_ACPI_HOTKEYSCAN_FNF10
,
1346 TP_ACPI_HOTKEYSCAN_FNF11
,
1347 TP_ACPI_HOTKEYSCAN_FNF12
,
1348 TP_ACPI_HOTKEYSCAN_FNBACKSPACE
,
1349 TP_ACPI_HOTKEYSCAN_FNINSERT
,
1350 TP_ACPI_HOTKEYSCAN_FNDELETE
,
1351 TP_ACPI_HOTKEYSCAN_FNHOME
,
1352 TP_ACPI_HOTKEYSCAN_FNEND
,
1353 TP_ACPI_HOTKEYSCAN_FNPAGEUP
,
1354 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN
,
1355 TP_ACPI_HOTKEYSCAN_FNSPACE
,
1356 TP_ACPI_HOTKEYSCAN_VOLUMEUP
,
1357 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
,
1358 TP_ACPI_HOTKEYSCAN_MUTE
,
1359 TP_ACPI_HOTKEYSCAN_THINKPAD
,
1362 enum { /* Keys available through NVRAM polling */
1363 TPACPI_HKEY_NVRAM_KNOWN_MASK
= 0x00fb88c0U
,
1364 TPACPI_HKEY_NVRAM_GOOD_MASK
= 0x00fb8000U
,
1367 enum { /* Positions of some of the keys in hotkey masks */
1368 TP_ACPI_HKEY_DISPSWTCH_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF7
,
1369 TP_ACPI_HKEY_DISPXPAND_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF8
,
1370 TP_ACPI_HKEY_HIBERNATE_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF12
,
1371 TP_ACPI_HKEY_BRGHTUP_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNHOME
,
1372 TP_ACPI_HKEY_BRGHTDWN_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNEND
,
1373 TP_ACPI_HKEY_THNKLGHT_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP
,
1374 TP_ACPI_HKEY_ZOOM_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNSPACE
,
1375 TP_ACPI_HKEY_VOLUP_MASK
= 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP
,
1376 TP_ACPI_HKEY_VOLDWN_MASK
= 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
,
1377 TP_ACPI_HKEY_MUTE_MASK
= 1 << TP_ACPI_HOTKEYSCAN_MUTE
,
1378 TP_ACPI_HKEY_THINKPAD_MASK
= 1 << TP_ACPI_HOTKEYSCAN_THINKPAD
,
1381 enum { /* NVRAM to ACPI HKEY group map */
1382 TP_NVRAM_HKEY_GROUP_HK2
= TP_ACPI_HKEY_THINKPAD_MASK
|
1383 TP_ACPI_HKEY_ZOOM_MASK
|
1384 TP_ACPI_HKEY_DISPSWTCH_MASK
|
1385 TP_ACPI_HKEY_HIBERNATE_MASK
,
1386 TP_NVRAM_HKEY_GROUP_BRIGHTNESS
= TP_ACPI_HKEY_BRGHTUP_MASK
|
1387 TP_ACPI_HKEY_BRGHTDWN_MASK
,
1388 TP_NVRAM_HKEY_GROUP_VOLUME
= TP_ACPI_HKEY_VOLUP_MASK
|
1389 TP_ACPI_HKEY_VOLDWN_MASK
|
1390 TP_ACPI_HKEY_MUTE_MASK
,
1393 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1394 struct tp_nvram_state
{
1395 u16 thinkpad_toggle
:1;
1397 u16 display_toggle
:1;
1398 u16 thinklight_toggle
:1;
1399 u16 hibernate_toggle
:1;
1400 u16 displayexp_toggle
:1;
1401 u16 display_state
:1;
1402 u16 brightness_toggle
:1;
1403 u16 volume_toggle
:1;
1406 u8 brightness_level
;
1410 static struct task_struct
*tpacpi_hotkey_task
;
1411 static u32 hotkey_source_mask
; /* bit mask 0=ACPI,1=NVRAM */
1412 static int hotkey_poll_freq
= 10; /* Hz */
1413 static struct mutex hotkey_thread_mutex
;
1414 static struct mutex hotkey_thread_data_mutex
;
1415 static unsigned int hotkey_config_change
;
1417 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1419 #define hotkey_source_mask 0U
1421 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1423 static struct mutex hotkey_mutex
;
1425 static enum { /* Reasons for waking up */
1426 TP_ACPI_WAKEUP_NONE
= 0, /* None or unknown */
1427 TP_ACPI_WAKEUP_BAYEJ
, /* Bay ejection request */
1428 TP_ACPI_WAKEUP_UNDOCK
, /* Undock request */
1429 } hotkey_wakeup_reason
;
1431 static int hotkey_autosleep_ack
;
1433 static u32 hotkey_orig_mask
;
1434 static u32 hotkey_all_mask
;
1435 static u32 hotkey_reserved_mask
;
1436 static u32 hotkey_mask
;
1438 static unsigned int hotkey_report_mode
;
1440 static u16
*hotkey_keycode_map
;
1442 static struct attribute_set
*hotkey_dev_attributes
;
1444 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1445 #define HOTKEY_CONFIG_CRITICAL_START \
1447 mutex_lock(&hotkey_thread_data_mutex); \
1448 hotkey_config_change++; \
1450 #define HOTKEY_CONFIG_CRITICAL_END \
1451 mutex_unlock(&hotkey_thread_data_mutex);
1453 #define HOTKEY_CONFIG_CRITICAL_START
1454 #define HOTKEY_CONFIG_CRITICAL_END
1455 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1457 /* HKEY.MHKG() return bits */
1458 #define TP_HOTKEY_TABLET_MASK (1 << 3)
1460 static int hotkey_get_wlsw(int *status
)
1462 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1464 *status
= !!tpacpi_wlsw_emulstate
;
1468 if (!acpi_evalf(hkey_handle
, status
, "WLSW", "d"))
1473 static int hotkey_get_tablet_mode(int *status
)
1477 if (!acpi_evalf(hkey_handle
, &s
, "MHKG", "d"))
1480 *status
= ((s
& TP_HOTKEY_TABLET_MASK
) != 0);
1485 * Call with hotkey_mutex held
1487 static int hotkey_mask_get(void)
1491 if (tp_features
.hotkey_mask
) {
1492 if (!acpi_evalf(hkey_handle
, &m
, "DHKN", "d"))
1495 hotkey_mask
= m
| (hotkey_source_mask
& hotkey_mask
);
1501 * Call with hotkey_mutex held
1503 static int hotkey_mask_set(u32 mask
)
1508 if (tp_features
.hotkey_mask
) {
1509 if (!tp_warned
.hotkey_mask_ff
&&
1510 (mask
== 0xffff || mask
== 0xffffff ||
1511 mask
== 0xffffffff)) {
1512 tp_warned
.hotkey_mask_ff
= 1;
1513 printk(TPACPI_NOTICE
1514 "setting the hotkey mask to 0x%08x is likely "
1515 "not the best way to go about it\n", mask
);
1516 printk(TPACPI_NOTICE
1517 "please consider using the driver defaults, "
1518 "and refer to up-to-date thinkpad-acpi "
1522 HOTKEY_CONFIG_CRITICAL_START
1523 for (i
= 0; i
< 32; i
++) {
1525 /* enable in firmware mask only keys not in NVRAM
1526 * mode, but enable the key in the cached hotkey_mask
1527 * regardless of mode, or the key will end up
1528 * disabled by hotkey_mask_get() */
1529 if (!acpi_evalf(hkey_handle
,
1530 NULL
, "MHKM", "vdd", i
+ 1,
1531 !!((mask
& ~hotkey_source_mask
) & m
))) {
1535 hotkey_mask
= (hotkey_mask
& ~m
) | (mask
& m
);
1538 HOTKEY_CONFIG_CRITICAL_END
1540 /* hotkey_mask_get must be called unconditionally below */
1541 if (!hotkey_mask_get() && !rc
&&
1542 (hotkey_mask
& ~hotkey_source_mask
) !=
1543 (mask
& ~hotkey_source_mask
)) {
1544 printk(TPACPI_NOTICE
1545 "requested hot key mask 0x%08x, but "
1546 "firmware forced it to 0x%08x\n",
1550 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1551 HOTKEY_CONFIG_CRITICAL_START
1552 hotkey_mask
= mask
& hotkey_source_mask
;
1553 HOTKEY_CONFIG_CRITICAL_END
1555 if (hotkey_mask
!= mask
) {
1556 printk(TPACPI_NOTICE
1557 "requested hot key mask 0x%08x, "
1558 "forced to 0x%08x (NVRAM poll mask is "
1559 "0x%08x): no firmware mask support\n",
1560 mask
, hotkey_mask
, hotkey_source_mask
);
1565 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1571 static int hotkey_status_get(int *status
)
1573 if (!acpi_evalf(hkey_handle
, status
, "DHKC", "d"))
1579 static int hotkey_status_set(bool enable
)
1581 if (!acpi_evalf(hkey_handle
, NULL
, "MHKC", "vd", enable
? 1 : 0))
1587 static void tpacpi_input_send_tabletsw(void)
1591 if (tp_features
.hotkey_tablet
&&
1592 !hotkey_get_tablet_mode(&state
)) {
1593 mutex_lock(&tpacpi_inputdev_send_mutex
);
1595 input_report_switch(tpacpi_inputdev
,
1596 SW_TABLET_MODE
, !!state
);
1597 input_sync(tpacpi_inputdev
);
1599 mutex_unlock(&tpacpi_inputdev_send_mutex
);
1603 static void tpacpi_input_send_key(unsigned int scancode
)
1605 unsigned int keycode
;
1607 keycode
= hotkey_keycode_map
[scancode
];
1609 if (keycode
!= KEY_RESERVED
) {
1610 mutex_lock(&tpacpi_inputdev_send_mutex
);
1612 input_report_key(tpacpi_inputdev
, keycode
, 1);
1613 if (keycode
== KEY_UNKNOWN
)
1614 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
,
1616 input_sync(tpacpi_inputdev
);
1618 input_report_key(tpacpi_inputdev
, keycode
, 0);
1619 if (keycode
== KEY_UNKNOWN
)
1620 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
,
1622 input_sync(tpacpi_inputdev
);
1624 mutex_unlock(&tpacpi_inputdev_send_mutex
);
1628 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1629 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
;
1631 static void tpacpi_hotkey_send_key(unsigned int scancode
)
1633 tpacpi_input_send_key(scancode
);
1634 if (hotkey_report_mode
< 2) {
1635 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver
.device
,
1636 0x80, 0x1001 + scancode
);
1640 static void hotkey_read_nvram(struct tp_nvram_state
*n
, u32 m
)
1644 if (m
& TP_NVRAM_HKEY_GROUP_HK2
) {
1645 d
= nvram_read_byte(TP_NVRAM_ADDR_HK2
);
1646 n
->thinkpad_toggle
= !!(d
& TP_NVRAM_MASK_HKT_THINKPAD
);
1647 n
->zoom_toggle
= !!(d
& TP_NVRAM_MASK_HKT_ZOOM
);
1648 n
->display_toggle
= !!(d
& TP_NVRAM_MASK_HKT_DISPLAY
);
1649 n
->hibernate_toggle
= !!(d
& TP_NVRAM_MASK_HKT_HIBERNATE
);
1651 if (m
& TP_ACPI_HKEY_THNKLGHT_MASK
) {
1652 d
= nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT
);
1653 n
->thinklight_toggle
= !!(d
& TP_NVRAM_MASK_THINKLIGHT
);
1655 if (m
& TP_ACPI_HKEY_DISPXPAND_MASK
) {
1656 d
= nvram_read_byte(TP_NVRAM_ADDR_VIDEO
);
1657 n
->displayexp_toggle
=
1658 !!(d
& TP_NVRAM_MASK_HKT_DISPEXPND
);
1660 if (m
& TP_NVRAM_HKEY_GROUP_BRIGHTNESS
) {
1661 d
= nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
);
1662 n
->brightness_level
= (d
& TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
1663 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
1664 n
->brightness_toggle
=
1665 !!(d
& TP_NVRAM_MASK_HKT_BRIGHTNESS
);
1667 if (m
& TP_NVRAM_HKEY_GROUP_VOLUME
) {
1668 d
= nvram_read_byte(TP_NVRAM_ADDR_MIXER
);
1669 n
->volume_level
= (d
& TP_NVRAM_MASK_LEVEL_VOLUME
)
1670 >> TP_NVRAM_POS_LEVEL_VOLUME
;
1671 n
->mute
= !!(d
& TP_NVRAM_MASK_MUTE
);
1672 n
->volume_toggle
= !!(d
& TP_NVRAM_MASK_HKT_VOLUME
);
1676 #define TPACPI_COMPARE_KEY(__scancode, __member) \
1678 if ((mask & (1 << __scancode)) && \
1679 oldn->__member != newn->__member) \
1680 tpacpi_hotkey_send_key(__scancode); \
1683 #define TPACPI_MAY_SEND_KEY(__scancode) \
1684 do { if (mask & (1 << __scancode)) \
1685 tpacpi_hotkey_send_key(__scancode); } while (0)
1687 static void hotkey_compare_and_issue_event(struct tp_nvram_state
*oldn
,
1688 struct tp_nvram_state
*newn
,
1691 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD
, thinkpad_toggle
);
1692 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE
, zoom_toggle
);
1693 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7
, display_toggle
);
1694 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12
, hibernate_toggle
);
1696 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP
, thinklight_toggle
);
1698 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8
, displayexp_toggle
);
1701 if (oldn
->volume_toggle
!= newn
->volume_toggle
) {
1702 if (oldn
->mute
!= newn
->mute
) {
1703 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE
);
1705 if (oldn
->volume_level
> newn
->volume_level
) {
1706 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
1707 } else if (oldn
->volume_level
< newn
->volume_level
) {
1708 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
1709 } else if (oldn
->mute
== newn
->mute
) {
1710 /* repeated key presses that didn't change state */
1712 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE
);
1713 } else if (newn
->volume_level
!= 0) {
1714 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
1716 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
1721 /* handle brightness */
1722 if (oldn
->brightness_toggle
!= newn
->brightness_toggle
) {
1723 if (oldn
->brightness_level
< newn
->brightness_level
) {
1724 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
1725 } else if (oldn
->brightness_level
> newn
->brightness_level
) {
1726 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
1728 /* repeated key presses that didn't change state */
1729 if (newn
->brightness_level
!= 0) {
1730 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
1732 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
1738 #undef TPACPI_COMPARE_KEY
1739 #undef TPACPI_MAY_SEND_KEY
1741 static int hotkey_kthread(void *data
)
1743 struct tp_nvram_state s
[2];
1745 unsigned int si
, so
;
1747 unsigned int change_detector
, must_reset
;
1749 mutex_lock(&hotkey_thread_mutex
);
1751 if (tpacpi_lifecycle
== TPACPI_LIFE_EXITING
)
1760 /* Initial state for compares */
1761 mutex_lock(&hotkey_thread_data_mutex
);
1762 change_detector
= hotkey_config_change
;
1763 mask
= hotkey_source_mask
& hotkey_mask
;
1764 mutex_unlock(&hotkey_thread_data_mutex
);
1765 hotkey_read_nvram(&s
[so
], mask
);
1767 while (!kthread_should_stop() && hotkey_poll_freq
) {
1769 t
= 1000/hotkey_poll_freq
;
1770 t
= msleep_interruptible(t
);
1771 if (unlikely(kthread_should_stop()))
1773 must_reset
= try_to_freeze();
1774 if (t
> 0 && !must_reset
)
1777 mutex_lock(&hotkey_thread_data_mutex
);
1778 if (must_reset
|| hotkey_config_change
!= change_detector
) {
1779 /* forget old state on thaw or config change */
1782 change_detector
= hotkey_config_change
;
1784 mask
= hotkey_source_mask
& hotkey_mask
;
1785 mutex_unlock(&hotkey_thread_data_mutex
);
1788 hotkey_read_nvram(&s
[si
], mask
);
1789 if (likely(si
!= so
)) {
1790 hotkey_compare_and_issue_event(&s
[so
], &s
[si
],
1800 mutex_unlock(&hotkey_thread_mutex
);
1804 static void hotkey_poll_stop_sync(void)
1806 if (tpacpi_hotkey_task
) {
1807 if (frozen(tpacpi_hotkey_task
) ||
1808 freezing(tpacpi_hotkey_task
))
1809 thaw_process(tpacpi_hotkey_task
);
1811 kthread_stop(tpacpi_hotkey_task
);
1812 tpacpi_hotkey_task
= NULL
;
1813 mutex_lock(&hotkey_thread_mutex
);
1814 /* at this point, the thread did exit */
1815 mutex_unlock(&hotkey_thread_mutex
);
1819 /* call with hotkey_mutex held */
1820 static void hotkey_poll_setup(int may_warn
)
1822 if ((hotkey_source_mask
& hotkey_mask
) != 0 &&
1823 hotkey_poll_freq
> 0 &&
1824 (tpacpi_inputdev
->users
> 0 || hotkey_report_mode
< 2)) {
1825 if (!tpacpi_hotkey_task
) {
1826 tpacpi_hotkey_task
= kthread_run(hotkey_kthread
,
1827 NULL
, TPACPI_NVRAM_KTHREAD_NAME
);
1828 if (IS_ERR(tpacpi_hotkey_task
)) {
1829 tpacpi_hotkey_task
= NULL
;
1831 "could not create kernel thread "
1832 "for hotkey polling\n");
1836 hotkey_poll_stop_sync();
1838 hotkey_source_mask
!= 0 && hotkey_poll_freq
== 0) {
1839 printk(TPACPI_NOTICE
1840 "hot keys 0x%08x require polling, "
1841 "which is currently disabled\n",
1842 hotkey_source_mask
);
1847 static void hotkey_poll_setup_safe(int may_warn
)
1849 mutex_lock(&hotkey_mutex
);
1850 hotkey_poll_setup(may_warn
);
1851 mutex_unlock(&hotkey_mutex
);
1854 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1856 static void hotkey_poll_setup_safe(int __unused
)
1860 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1862 static int hotkey_inputdev_open(struct input_dev
*dev
)
1864 switch (tpacpi_lifecycle
) {
1865 case TPACPI_LIFE_INIT
:
1867 * hotkey_init will call hotkey_poll_setup_safe
1868 * at the appropriate moment
1871 case TPACPI_LIFE_EXITING
:
1873 case TPACPI_LIFE_RUNNING
:
1874 hotkey_poll_setup_safe(0);
1878 /* Should only happen if tpacpi_lifecycle is corrupt */
1883 static void hotkey_inputdev_close(struct input_dev
*dev
)
1885 /* disable hotkey polling when possible */
1886 if (tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
)
1887 hotkey_poll_setup_safe(0);
1890 /* sysfs hotkey enable ------------------------------------------------- */
1891 static ssize_t
hotkey_enable_show(struct device
*dev
,
1892 struct device_attribute
*attr
,
1897 printk_deprecated_attribute("hotkey_enable",
1898 "Hotkey reporting is always enabled");
1900 res
= hotkey_status_get(&status
);
1904 return snprintf(buf
, PAGE_SIZE
, "%d\n", status
);
1907 static ssize_t
hotkey_enable_store(struct device
*dev
,
1908 struct device_attribute
*attr
,
1909 const char *buf
, size_t count
)
1913 printk_deprecated_attribute("hotkey_enable",
1914 "Hotkeys can be disabled through hotkey_mask");
1916 if (parse_strtoul(buf
, 1, &t
))
1925 static struct device_attribute dev_attr_hotkey_enable
=
1926 __ATTR(hotkey_enable
, S_IWUSR
| S_IRUGO
,
1927 hotkey_enable_show
, hotkey_enable_store
);
1929 /* sysfs hotkey mask --------------------------------------------------- */
1930 static ssize_t
hotkey_mask_show(struct device
*dev
,
1931 struct device_attribute
*attr
,
1936 if (mutex_lock_killable(&hotkey_mutex
))
1937 return -ERESTARTSYS
;
1938 res
= hotkey_mask_get();
1939 mutex_unlock(&hotkey_mutex
);
1942 res
: snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_mask
);
1945 static ssize_t
hotkey_mask_store(struct device
*dev
,
1946 struct device_attribute
*attr
,
1947 const char *buf
, size_t count
)
1952 if (parse_strtoul(buf
, 0xffffffffUL
, &t
))
1955 if (mutex_lock_killable(&hotkey_mutex
))
1956 return -ERESTARTSYS
;
1958 res
= hotkey_mask_set(t
);
1960 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1961 hotkey_poll_setup(1);
1964 mutex_unlock(&hotkey_mutex
);
1966 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t
);
1968 return (res
) ? res
: count
;
1971 static struct device_attribute dev_attr_hotkey_mask
=
1972 __ATTR(hotkey_mask
, S_IWUSR
| S_IRUGO
,
1973 hotkey_mask_show
, hotkey_mask_store
);
1975 /* sysfs hotkey bios_enabled ------------------------------------------- */
1976 static ssize_t
hotkey_bios_enabled_show(struct device
*dev
,
1977 struct device_attribute
*attr
,
1980 return sprintf(buf
, "0\n");
1983 static struct device_attribute dev_attr_hotkey_bios_enabled
=
1984 __ATTR(hotkey_bios_enabled
, S_IRUGO
, hotkey_bios_enabled_show
, NULL
);
1986 /* sysfs hotkey bios_mask ---------------------------------------------- */
1987 static ssize_t
hotkey_bios_mask_show(struct device
*dev
,
1988 struct device_attribute
*attr
,
1991 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_orig_mask
);
1994 static struct device_attribute dev_attr_hotkey_bios_mask
=
1995 __ATTR(hotkey_bios_mask
, S_IRUGO
, hotkey_bios_mask_show
, NULL
);
1997 /* sysfs hotkey all_mask ----------------------------------------------- */
1998 static ssize_t
hotkey_all_mask_show(struct device
*dev
,
1999 struct device_attribute
*attr
,
2002 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
2003 hotkey_all_mask
| hotkey_source_mask
);
2006 static struct device_attribute dev_attr_hotkey_all_mask
=
2007 __ATTR(hotkey_all_mask
, S_IRUGO
, hotkey_all_mask_show
, NULL
);
2009 /* sysfs hotkey recommended_mask --------------------------------------- */
2010 static ssize_t
hotkey_recommended_mask_show(struct device
*dev
,
2011 struct device_attribute
*attr
,
2014 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
2015 (hotkey_all_mask
| hotkey_source_mask
)
2016 & ~hotkey_reserved_mask
);
2019 static struct device_attribute dev_attr_hotkey_recommended_mask
=
2020 __ATTR(hotkey_recommended_mask
, S_IRUGO
,
2021 hotkey_recommended_mask_show
, NULL
);
2023 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2025 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
2026 static ssize_t
hotkey_source_mask_show(struct device
*dev
,
2027 struct device_attribute
*attr
,
2030 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_source_mask
);
2033 static ssize_t
hotkey_source_mask_store(struct device
*dev
,
2034 struct device_attribute
*attr
,
2035 const char *buf
, size_t count
)
2039 if (parse_strtoul(buf
, 0xffffffffUL
, &t
) ||
2040 ((t
& ~TPACPI_HKEY_NVRAM_KNOWN_MASK
) != 0))
2043 if (mutex_lock_killable(&hotkey_mutex
))
2044 return -ERESTARTSYS
;
2046 HOTKEY_CONFIG_CRITICAL_START
2047 hotkey_source_mask
= t
;
2048 HOTKEY_CONFIG_CRITICAL_END
2050 hotkey_poll_setup(1);
2052 mutex_unlock(&hotkey_mutex
);
2054 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t
);
2059 static struct device_attribute dev_attr_hotkey_source_mask
=
2060 __ATTR(hotkey_source_mask
, S_IWUSR
| S_IRUGO
,
2061 hotkey_source_mask_show
, hotkey_source_mask_store
);
2063 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2064 static ssize_t
hotkey_poll_freq_show(struct device
*dev
,
2065 struct device_attribute
*attr
,
2068 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_poll_freq
);
2071 static ssize_t
hotkey_poll_freq_store(struct device
*dev
,
2072 struct device_attribute
*attr
,
2073 const char *buf
, size_t count
)
2077 if (parse_strtoul(buf
, 25, &t
))
2080 if (mutex_lock_killable(&hotkey_mutex
))
2081 return -ERESTARTSYS
;
2083 hotkey_poll_freq
= t
;
2085 hotkey_poll_setup(1);
2086 mutex_unlock(&hotkey_mutex
);
2088 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t
);
2093 static struct device_attribute dev_attr_hotkey_poll_freq
=
2094 __ATTR(hotkey_poll_freq
, S_IWUSR
| S_IRUGO
,
2095 hotkey_poll_freq_show
, hotkey_poll_freq_store
);
2097 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2099 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
2100 static ssize_t
hotkey_radio_sw_show(struct device
*dev
,
2101 struct device_attribute
*attr
,
2105 res
= hotkey_get_wlsw(&s
);
2109 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!s
);
2112 static struct device_attribute dev_attr_hotkey_radio_sw
=
2113 __ATTR(hotkey_radio_sw
, S_IRUGO
, hotkey_radio_sw_show
, NULL
);
2115 static void hotkey_radio_sw_notify_change(void)
2117 if (tp_features
.hotkey_wlsw
)
2118 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2122 /* sysfs hotkey tablet mode (pollable) --------------------------------- */
2123 static ssize_t
hotkey_tablet_mode_show(struct device
*dev
,
2124 struct device_attribute
*attr
,
2128 res
= hotkey_get_tablet_mode(&s
);
2132 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!s
);
2135 static struct device_attribute dev_attr_hotkey_tablet_mode
=
2136 __ATTR(hotkey_tablet_mode
, S_IRUGO
, hotkey_tablet_mode_show
, NULL
);
2138 static void hotkey_tablet_mode_notify_change(void)
2140 if (tp_features
.hotkey_tablet
)
2141 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2142 "hotkey_tablet_mode");
2145 /* sysfs hotkey report_mode -------------------------------------------- */
2146 static ssize_t
hotkey_report_mode_show(struct device
*dev
,
2147 struct device_attribute
*attr
,
2150 return snprintf(buf
, PAGE_SIZE
, "%d\n",
2151 (hotkey_report_mode
!= 0) ? hotkey_report_mode
: 1);
2154 static struct device_attribute dev_attr_hotkey_report_mode
=
2155 __ATTR(hotkey_report_mode
, S_IRUGO
, hotkey_report_mode_show
, NULL
);
2157 /* sysfs wakeup reason (pollable) -------------------------------------- */
2158 static ssize_t
hotkey_wakeup_reason_show(struct device
*dev
,
2159 struct device_attribute
*attr
,
2162 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_wakeup_reason
);
2165 static struct device_attribute dev_attr_hotkey_wakeup_reason
=
2166 __ATTR(wakeup_reason
, S_IRUGO
, hotkey_wakeup_reason_show
, NULL
);
2168 static void hotkey_wakeup_reason_notify_change(void)
2170 if (tp_features
.hotkey_mask
)
2171 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2175 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
2176 static ssize_t
hotkey_wakeup_hotunplug_complete_show(struct device
*dev
,
2177 struct device_attribute
*attr
,
2180 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_autosleep_ack
);
2183 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete
=
2184 __ATTR(wakeup_hotunplug_complete
, S_IRUGO
,
2185 hotkey_wakeup_hotunplug_complete_show
, NULL
);
2187 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
2189 if (tp_features
.hotkey_mask
)
2190 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2191 "wakeup_hotunplug_complete");
2194 /* --------------------------------------------------------------------- */
2196 static struct attribute
*hotkey_attributes
[] __initdata
= {
2197 &dev_attr_hotkey_enable
.attr
,
2198 &dev_attr_hotkey_bios_enabled
.attr
,
2199 &dev_attr_hotkey_report_mode
.attr
,
2200 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2201 &dev_attr_hotkey_mask
.attr
,
2202 &dev_attr_hotkey_all_mask
.attr
,
2203 &dev_attr_hotkey_recommended_mask
.attr
,
2204 &dev_attr_hotkey_source_mask
.attr
,
2205 &dev_attr_hotkey_poll_freq
.attr
,
2209 static struct attribute
*hotkey_mask_attributes
[] __initdata
= {
2210 &dev_attr_hotkey_bios_mask
.attr
,
2211 #ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2212 &dev_attr_hotkey_mask
.attr
,
2213 &dev_attr_hotkey_all_mask
.attr
,
2214 &dev_attr_hotkey_recommended_mask
.attr
,
2216 &dev_attr_hotkey_wakeup_reason
.attr
,
2217 &dev_attr_hotkey_wakeup_hotunplug_complete
.attr
,
2220 static void bluetooth_update_rfk(void);
2221 static void wan_update_rfk(void);
2222 static void uwb_update_rfk(void);
2223 static void tpacpi_send_radiosw_update(void)
2227 /* Sync these BEFORE sending any rfkill events */
2228 if (tp_features
.bluetooth
)
2229 bluetooth_update_rfk();
2230 if (tp_features
.wan
)
2232 if (tp_features
.uwb
)
2235 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&wlsw
)) {
2236 mutex_lock(&tpacpi_inputdev_send_mutex
);
2238 input_report_switch(tpacpi_inputdev
,
2239 SW_RFKILL_ALL
, !!wlsw
);
2240 input_sync(tpacpi_inputdev
);
2242 mutex_unlock(&tpacpi_inputdev_send_mutex
);
2244 hotkey_radio_sw_notify_change();
2247 static void hotkey_exit(void)
2249 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2250 hotkey_poll_stop_sync();
2253 if (hotkey_dev_attributes
)
2254 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
2256 kfree(hotkey_keycode_map
);
2258 if (tp_features
.hotkey
) {
2259 dbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_HKEY
,
2260 "restoring original hot key mask\n");
2261 /* no short-circuit boolean operator below! */
2262 if ((hotkey_mask_set(hotkey_orig_mask
) |
2263 hotkey_status_set(false)) != 0)
2265 "failed to restore hot key mask "
2266 "to BIOS defaults\n");
2270 static int __init
hotkey_init(struct ibm_init_struct
*iibm
)
2272 /* Requirements for changing the default keymaps:
2274 * 1. Many of the keys are mapped to KEY_RESERVED for very
2275 * good reasons. Do not change them unless you have deep
2276 * knowledge on the IBM and Lenovo ThinkPad firmware for
2277 * the various ThinkPad models. The driver behaves
2278 * differently for KEY_RESERVED: such keys have their
2279 * hot key mask *unset* in mask_recommended, and also
2280 * in the initial hot key mask programmed into the
2281 * firmware at driver load time, which means the firm-
2282 * ware may react very differently if you change them to
2285 * 2. You must be subscribed to the linux-thinkpad and
2286 * ibm-acpi-devel mailing lists, and you should read the
2287 * list archives since 2007 if you want to change the
2288 * keymaps. This requirement exists so that you will
2289 * know the past history of problems with the thinkpad-
2290 * acpi driver keymaps, and also that you will be
2291 * listening to any bug reports;
2293 * 3. Do not send thinkpad-acpi specific patches directly to
2294 * for merging, *ever*. Send them to the linux-acpi
2295 * mailinglist for comments. Merging is to be done only
2296 * through acpi-test and the ACPI maintainer.
2298 * If the above is too much to ask, don't change the keymap.
2299 * Ask the thinkpad-acpi maintainer to do it, instead.
2301 static u16 ibm_keycode_map
[] __initdata
= {
2302 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2303 KEY_FN_F1
, KEY_FN_F2
, KEY_COFFEE
, KEY_SLEEP
,
2304 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
2305 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
2307 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
2308 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
2309 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
2310 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
2312 /* brightness: firmware always reacts to them, unless
2313 * X.org did some tricks in the radeon BIOS scratch
2314 * registers of *some* models */
2315 KEY_RESERVED
, /* 0x0F: FN+HOME (brightness up) */
2316 KEY_RESERVED
, /* 0x10: FN+END (brightness down) */
2318 /* Thinklight: firmware always react to it */
2319 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
2321 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
2322 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
2324 /* Volume: firmware always react to it and reprograms
2325 * the built-in *extra* mixer. Never map it to control
2326 * another mixer by default. */
2327 KEY_RESERVED
, /* 0x14: VOLUME UP */
2328 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
2329 KEY_RESERVED
, /* 0x16: MUTE */
2331 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2333 /* (assignments unknown, please report if found) */
2334 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
2335 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
2337 static u16 lenovo_keycode_map
[] __initdata
= {
2338 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2339 KEY_FN_F1
, KEY_COFFEE
, KEY_BATTERY
, KEY_SLEEP
,
2340 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
2341 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
2343 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
2344 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
2345 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
2346 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
2348 /* These either have to go through ACPI video, or
2349 * act like in the IBM ThinkPads, so don't ever
2350 * enable them by default */
2351 KEY_RESERVED
, /* 0x0F: FN+HOME (brightness up) */
2352 KEY_RESERVED
, /* 0x10: FN+END (brightness down) */
2354 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
2356 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
2357 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
2359 /* Volume: z60/z61, T60 (BIOS version?): firmware always
2360 * react to it and reprograms the built-in *extra* mixer.
2361 * Never map it to control another mixer by default.
2363 * T60?, T61, R60?, R61: firmware and EC tries to send
2364 * these over the regular keyboard, so these are no-ops,
2365 * but there are still weird bugs re. MUTE, so do not
2366 * change unless you get test reports from all Lenovo
2367 * models. May cause the BIOS to interfere with the
2370 KEY_RESERVED
, /* 0x14: VOLUME UP */
2371 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
2372 KEY_RESERVED
, /* 0x16: MUTE */
2374 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2376 /* (assignments unknown, please report if found) */
2377 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
2378 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
2381 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
2382 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
2383 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
2389 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
2390 "initializing hotkey subdriver\n");
2392 BUG_ON(!tpacpi_inputdev
);
2393 BUG_ON(tpacpi_inputdev
->open
!= NULL
||
2394 tpacpi_inputdev
->close
!= NULL
);
2396 TPACPI_ACPIHANDLE_INIT(hkey
);
2397 mutex_init(&hotkey_mutex
);
2399 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2400 mutex_init(&hotkey_thread_mutex
);
2401 mutex_init(&hotkey_thread_data_mutex
);
2404 /* hotkey not supported on 570 */
2405 tp_features
.hotkey
= hkey_handle
!= NULL
;
2407 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
2409 str_supported(tp_features
.hotkey
));
2411 if (!tp_features
.hotkey
)
2414 tpacpi_disable_brightness_delay();
2416 hotkey_dev_attributes
= create_attr_set(13, NULL
);
2417 if (!hotkey_dev_attributes
)
2419 res
= add_many_to_attr_set(hotkey_dev_attributes
,
2421 ARRAY_SIZE(hotkey_attributes
));
2425 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2426 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
2427 for HKEY interface version 0x100 */
2428 if (acpi_evalf(hkey_handle
, &hkeyv
, "MHKV", "qd")) {
2429 if ((hkeyv
>> 8) != 1) {
2430 printk(TPACPI_ERR
"unknown version of the "
2431 "HKEY interface: 0x%x\n", hkeyv
);
2432 printk(TPACPI_ERR
"please report this to %s\n",
2436 * MHKV 0x100 in A31, R40, R40e,
2437 * T4x, X31, and later
2439 tp_features
.hotkey_mask
= 1;
2440 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
2441 "firmware HKEY interface version: 0x%x\n",
2446 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
2447 "hotkey masks are %s\n",
2448 str_supported(tp_features
.hotkey_mask
));
2450 if (tp_features
.hotkey_mask
) {
2451 if (!acpi_evalf(hkey_handle
, &hotkey_all_mask
,
2454 "missing MHKA handler, "
2455 "please report this to %s\n",
2457 /* FN+F12, FN+F4, FN+F3 */
2458 hotkey_all_mask
= 0x080cU
;
2462 /* hotkey_source_mask *must* be zero for
2463 * the first hotkey_mask_get */
2464 if (tp_features
.hotkey_mask
) {
2465 res
= hotkey_mask_get();
2469 hotkey_orig_mask
= hotkey_mask
;
2470 res
= add_many_to_attr_set(
2471 hotkey_dev_attributes
,
2472 hotkey_mask_attributes
,
2473 ARRAY_SIZE(hotkey_mask_attributes
));
2478 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2479 if (tp_features
.hotkey_mask
) {
2480 hotkey_source_mask
= TPACPI_HKEY_NVRAM_GOOD_MASK
2483 hotkey_source_mask
= TPACPI_HKEY_NVRAM_GOOD_MASK
;
2486 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
2487 "hotkey source mask 0x%08x, polling freq %d\n",
2488 hotkey_source_mask
, hotkey_poll_freq
);
2491 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
2493 tp_features
.hotkey_wlsw
= 1;
2495 "radio switch emulation enabled\n");
2498 /* Not all thinkpads have a hardware radio switch */
2499 if (acpi_evalf(hkey_handle
, &status
, "WLSW", "qd")) {
2500 tp_features
.hotkey_wlsw
= 1;
2502 "radio switch found; radios are %s\n",
2503 enabled(status
, 0));
2505 if (tp_features
.hotkey_wlsw
)
2506 res
= add_to_attr_set(hotkey_dev_attributes
,
2507 &dev_attr_hotkey_radio_sw
.attr
);
2509 /* For X41t, X60t, X61t Tablets... */
2510 if (!res
&& acpi_evalf(hkey_handle
, &status
, "MHKG", "qd")) {
2511 tp_features
.hotkey_tablet
= 1;
2513 "possible tablet mode switch found; "
2514 "ThinkPad in %s mode\n",
2515 (status
& TP_HOTKEY_TABLET_MASK
)?
2516 "tablet" : "laptop");
2517 res
= add_to_attr_set(hotkey_dev_attributes
,
2518 &dev_attr_hotkey_tablet_mode
.attr
);
2522 res
= register_attr_set_with_sysfs(
2523 hotkey_dev_attributes
,
2524 &tpacpi_pdev
->dev
.kobj
);
2528 /* Set up key map */
2530 hotkey_keycode_map
= kmalloc(TPACPI_HOTKEY_MAP_SIZE
,
2532 if (!hotkey_keycode_map
) {
2534 "failed to allocate memory for key map\n");
2539 if (thinkpad_id
.vendor
== PCI_VENDOR_ID_LENOVO
) {
2540 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
2541 "using Lenovo default hot key map\n");
2542 memcpy(hotkey_keycode_map
, &lenovo_keycode_map
,
2543 TPACPI_HOTKEY_MAP_SIZE
);
2545 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
2546 "using IBM default hot key map\n");
2547 memcpy(hotkey_keycode_map
, &ibm_keycode_map
,
2548 TPACPI_HOTKEY_MAP_SIZE
);
2551 set_bit(EV_KEY
, tpacpi_inputdev
->evbit
);
2552 set_bit(EV_MSC
, tpacpi_inputdev
->evbit
);
2553 set_bit(MSC_SCAN
, tpacpi_inputdev
->mscbit
);
2554 tpacpi_inputdev
->keycodesize
= TPACPI_HOTKEY_MAP_TYPESIZE
;
2555 tpacpi_inputdev
->keycodemax
= TPACPI_HOTKEY_MAP_LEN
;
2556 tpacpi_inputdev
->keycode
= hotkey_keycode_map
;
2557 for (i
= 0; i
< TPACPI_HOTKEY_MAP_LEN
; i
++) {
2558 if (hotkey_keycode_map
[i
] != KEY_RESERVED
) {
2559 set_bit(hotkey_keycode_map
[i
],
2560 tpacpi_inputdev
->keybit
);
2562 if (i
< sizeof(hotkey_reserved_mask
)*8)
2563 hotkey_reserved_mask
|= 1 << i
;
2567 if (tp_features
.hotkey_wlsw
) {
2568 set_bit(EV_SW
, tpacpi_inputdev
->evbit
);
2569 set_bit(SW_RFKILL_ALL
, tpacpi_inputdev
->swbit
);
2571 if (tp_features
.hotkey_tablet
) {
2572 set_bit(EV_SW
, tpacpi_inputdev
->evbit
);
2573 set_bit(SW_TABLET_MODE
, tpacpi_inputdev
->swbit
);
2576 /* Do not issue duplicate brightness change events to
2578 if (!tp_features
.bright_acpimode
)
2579 /* update bright_acpimode... */
2580 tpacpi_check_std_acpi_brightness_support();
2582 if (tp_features
.bright_acpimode
) {
2584 "This ThinkPad has standard ACPI backlight "
2585 "brightness control, supported by the ACPI "
2587 printk(TPACPI_NOTICE
2588 "Disabling thinkpad-acpi brightness events "
2591 /* The hotkey_reserved_mask change below is not
2592 * necessary while the keys are at KEY_RESERVED in the
2593 * default map, but better safe than sorry, leave it
2594 * here as a marker of what we have to do, especially
2595 * when we finally become able to set this at runtime
2596 * on response to X.org requests */
2597 hotkey_reserved_mask
|=
2598 (1 << TP_ACPI_HOTKEYSCAN_FNHOME
)
2599 | (1 << TP_ACPI_HOTKEYSCAN_FNEND
);
2602 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
2603 "enabling firmware HKEY event interface...\n");
2604 res
= hotkey_status_set(true);
2609 res
= hotkey_mask_set(((hotkey_all_mask
| hotkey_source_mask
)
2610 & ~hotkey_reserved_mask
)
2611 | hotkey_orig_mask
);
2612 if (res
< 0 && res
!= -ENXIO
) {
2617 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_HKEY
,
2618 "legacy ibm/hotkey event reporting over procfs %s\n",
2619 (hotkey_report_mode
< 2) ?
2620 "enabled" : "disabled");
2622 tpacpi_inputdev
->open
= &hotkey_inputdev_open
;
2623 tpacpi_inputdev
->close
= &hotkey_inputdev_close
;
2625 hotkey_poll_setup_safe(1);
2626 tpacpi_send_radiosw_update();
2627 tpacpi_input_send_tabletsw();
2632 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
2633 hotkey_dev_attributes
= NULL
;
2635 return (res
< 0)? res
: 1;
2638 static bool hotkey_notify_hotkey(const u32 hkey
,
2640 bool *ignore_acpi_ev
)
2642 /* 0x1000-0x1FFF: key presses */
2643 unsigned int scancode
= hkey
& 0xfff;
2644 *send_acpi_ev
= true;
2645 *ignore_acpi_ev
= false;
2647 if (scancode
> 0 && scancode
< 0x21) {
2649 if (!(hotkey_source_mask
& (1 << scancode
))) {
2650 tpacpi_input_send_key(scancode
);
2651 *send_acpi_ev
= false;
2653 *ignore_acpi_ev
= true;
2660 static bool hotkey_notify_wakeup(const u32 hkey
,
2662 bool *ignore_acpi_ev
)
2664 /* 0x2000-0x2FFF: Wakeup reason */
2665 *send_acpi_ev
= true;
2666 *ignore_acpi_ev
= false;
2669 case 0x2304: /* suspend, undock */
2670 case 0x2404: /* hibernation, undock */
2671 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_UNDOCK
;
2672 *ignore_acpi_ev
= true;
2675 case 0x2305: /* suspend, bay eject */
2676 case 0x2405: /* hibernation, bay eject */
2677 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_BAYEJ
;
2678 *ignore_acpi_ev
= true;
2681 case 0x2313: /* Battery on critical low level (S3) */
2682 case 0x2413: /* Battery on critical low level (S4) */
2684 "EMERGENCY WAKEUP: battery almost empty\n");
2685 /* how to auto-heal: */
2686 /* 2313: woke up from S3, go to S4/S5 */
2687 /* 2413: woke up from S4, go to S5 */
2694 if (hotkey_wakeup_reason
!= TP_ACPI_WAKEUP_NONE
) {
2696 "woke up due to a hot-unplug "
2698 hotkey_wakeup_reason_notify_change();
2703 static bool hotkey_notify_usrevent(const u32 hkey
,
2705 bool *ignore_acpi_ev
)
2707 /* 0x5000-0x5FFF: human interface helpers */
2708 *send_acpi_ev
= true;
2709 *ignore_acpi_ev
= false;
2712 case 0x5010: /* Lenovo new BIOS: brightness changed */
2713 case 0x500b: /* X61t: tablet pen inserted into bay */
2714 case 0x500c: /* X61t: tablet pen removed from bay */
2717 case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
2718 case 0x500a: /* X41t-X61t: swivel down (normal mode) */
2719 tpacpi_input_send_tabletsw();
2720 hotkey_tablet_mode_notify_change();
2721 *send_acpi_ev
= false;
2726 /* LID switch events. Do not propagate */
2727 *ignore_acpi_ev
= true;
2735 static bool hotkey_notify_thermal(const u32 hkey
,
2737 bool *ignore_acpi_ev
)
2739 /* 0x6000-0x6FFF: thermal alarms */
2740 *send_acpi_ev
= true;
2741 *ignore_acpi_ev
= false;
2746 "THERMAL ALARM: battery is too hot!\n");
2747 /* recommended action: warn user through gui */
2751 "THERMAL EMERGENCY: battery is extremely hot!\n");
2752 /* recommended action: immediate sleep/hibernate */
2757 "a sensor reports something is too hot!\n");
2758 /* recommended action: warn user through gui, that */
2759 /* some internal component is too hot */
2763 "THERMAL EMERGENCY: "
2764 "a sensor reports something is extremely hot!\n");
2765 /* recommended action: immediate sleep/hibernate */
2769 "EC reports that Thermal Table has changed\n");
2770 /* recommended action: do nothing, we don't have
2771 * Lenovo ATM information */
2775 "THERMAL ALERT: unknown thermal alarm received\n");
2780 static void hotkey_notify(struct ibm_struct
*ibm
, u32 event
)
2784 bool ignore_acpi_ev
;
2787 if (event
!= 0x80) {
2789 "unknown HKEY notification event %d\n", event
);
2790 /* forward it to userspace, maybe it knows how to handle it */
2791 acpi_bus_generate_netlink_event(
2792 ibm
->acpi
->device
->pnp
.device_class
,
2793 dev_name(&ibm
->acpi
->device
->dev
),
2799 if (!acpi_evalf(hkey_handle
, &hkey
, "MHKP", "d")) {
2800 printk(TPACPI_ERR
"failed to retrieve HKEY event\n");
2809 send_acpi_ev
= true;
2810 ignore_acpi_ev
= false;
2812 switch (hkey
>> 12) {
2814 /* 0x1000-0x1FFF: key presses */
2815 known_ev
= hotkey_notify_hotkey(hkey
, &send_acpi_ev
,
2819 /* 0x2000-0x2FFF: Wakeup reason */
2820 known_ev
= hotkey_notify_wakeup(hkey
, &send_acpi_ev
,
2824 /* 0x3000-0x3FFF: bay-related wakeups */
2825 if (hkey
== 0x3003) {
2826 hotkey_autosleep_ack
= 1;
2829 hotkey_wakeup_hotunplug_complete_notify_change();
2836 /* 0x4000-0x4FFF: dock-related wakeups */
2837 if (hkey
== 0x4003) {
2838 hotkey_autosleep_ack
= 1;
2841 hotkey_wakeup_hotunplug_complete_notify_change();
2848 /* 0x5000-0x5FFF: human interface helpers */
2849 known_ev
= hotkey_notify_usrevent(hkey
, &send_acpi_ev
,
2853 /* 0x6000-0x6FFF: thermal alarms */
2854 known_ev
= hotkey_notify_thermal(hkey
, &send_acpi_ev
,
2858 /* 0x7000-0x7FFF: misc */
2859 if (tp_features
.hotkey_wlsw
&& hkey
== 0x7000) {
2860 tpacpi_send_radiosw_update();
2865 /* fallthrough to default */
2870 printk(TPACPI_NOTICE
2871 "unhandled HKEY event 0x%04x\n", hkey
);
2872 printk(TPACPI_NOTICE
2873 "please report the conditions when this "
2874 "event happened to %s\n", TPACPI_MAIL
);
2878 if (!ignore_acpi_ev
&&
2879 (send_acpi_ev
|| hotkey_report_mode
< 2)) {
2880 acpi_bus_generate_proc_event(ibm
->acpi
->device
,
2884 /* netlink events */
2885 if (!ignore_acpi_ev
&& send_acpi_ev
) {
2886 acpi_bus_generate_netlink_event(
2887 ibm
->acpi
->device
->pnp
.device_class
,
2888 dev_name(&ibm
->acpi
->device
->dev
),
2894 static void hotkey_suspend(pm_message_t state
)
2896 /* Do these on suspend, we get the events on early resume! */
2897 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_NONE
;
2898 hotkey_autosleep_ack
= 0;
2901 static void hotkey_resume(void)
2903 tpacpi_disable_brightness_delay();
2905 if (hotkey_mask_get())
2907 "error while trying to read hot key mask "
2909 tpacpi_send_radiosw_update();
2910 hotkey_tablet_mode_notify_change();
2911 hotkey_wakeup_reason_notify_change();
2912 hotkey_wakeup_hotunplug_complete_notify_change();
2913 hotkey_poll_setup_safe(0);
2916 /* procfs -------------------------------------------------------------- */
2917 static int hotkey_read(char *p
)
2922 if (!tp_features
.hotkey
) {
2923 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
2927 if (mutex_lock_killable(&hotkey_mutex
))
2928 return -ERESTARTSYS
;
2929 res
= hotkey_status_get(&status
);
2931 res
= hotkey_mask_get();
2932 mutex_unlock(&hotkey_mutex
);
2936 len
+= sprintf(p
+ len
, "status:\t\t%s\n", enabled(status
, 0));
2937 if (tp_features
.hotkey_mask
) {
2938 len
+= sprintf(p
+ len
, "mask:\t\t0x%08x\n", hotkey_mask
);
2939 len
+= sprintf(p
+ len
,
2940 "commands:\tenable, disable, reset, <mask>\n");
2942 len
+= sprintf(p
+ len
, "mask:\t\tnot supported\n");
2943 len
+= sprintf(p
+ len
, "commands:\tenable, disable, reset\n");
2949 static void hotkey_enabledisable_warn(void)
2951 tpacpi_log_usertask("procfs hotkey enable/disable");
2953 "hotkey enable/disable functionality has been "
2954 "removed from the driver. Hotkeys are always enabled.\n");
2957 static int hotkey_write(char *buf
)
2963 if (!tp_features
.hotkey
)
2966 if (mutex_lock_killable(&hotkey_mutex
))
2967 return -ERESTARTSYS
;
2972 while ((cmd
= next_cmd(&buf
))) {
2973 if (strlencmp(cmd
, "enable") == 0) {
2974 hotkey_enabledisable_warn();
2975 } else if (strlencmp(cmd
, "disable") == 0) {
2976 hotkey_enabledisable_warn();
2978 } else if (strlencmp(cmd
, "reset") == 0) {
2979 mask
= hotkey_orig_mask
;
2980 } else if (sscanf(cmd
, "0x%x", &mask
) == 1) {
2982 } else if (sscanf(cmd
, "%x", &mask
) == 1) {
2991 tpacpi_disclose_usertask("procfs hotkey",
2992 "set mask to 0x%08x\n", mask
);
2994 if (!res
&& mask
!= hotkey_mask
)
2995 res
= hotkey_mask_set(mask
);
2998 mutex_unlock(&hotkey_mutex
);
3002 static const struct acpi_device_id ibm_htk_device_ids
[] = {
3003 {TPACPI_ACPI_HKEY_HID
, 0},
3007 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
= {
3008 .hid
= ibm_htk_device_ids
,
3009 .notify
= hotkey_notify
,
3010 .handle
= &hkey_handle
,
3011 .type
= ACPI_DEVICE_NOTIFY
,
3014 static struct ibm_struct hotkey_driver_data
= {
3016 .read
= hotkey_read
,
3017 .write
= hotkey_write
,
3018 .exit
= hotkey_exit
,
3019 .resume
= hotkey_resume
,
3020 .suspend
= hotkey_suspend
,
3021 .acpi
= &ibm_hotkey_acpidriver
,
3024 /*************************************************************************
3025 * Bluetooth subdriver
3029 /* ACPI GBDC/SBDC bits */
3030 TP_ACPI_BLUETOOTH_HWPRESENT
= 0x01, /* Bluetooth hw available */
3031 TP_ACPI_BLUETOOTH_RADIOSSW
= 0x02, /* Bluetooth radio enabled */
3032 TP_ACPI_BLUETOOTH_RESUMECTRL
= 0x04, /* Bluetooth state at resume:
3037 /* ACPI \BLTH commands */
3038 TP_ACPI_BLTH_GET_ULTRAPORT_ID
= 0x00, /* Get Ultraport BT ID */
3039 TP_ACPI_BLTH_GET_PWR_ON_RESUME
= 0x01, /* Get power-on-resume state */
3040 TP_ACPI_BLTH_PWR_ON_ON_RESUME
= 0x02, /* Resume powered on */
3041 TP_ACPI_BLTH_PWR_OFF_ON_RESUME
= 0x03, /* Resume powered off */
3042 TP_ACPI_BLTH_SAVE_STATE
= 0x05, /* Save state for S4/S5 */
3045 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3047 static struct rfkill
*tpacpi_bluetooth_rfkill
;
3049 static void bluetooth_suspend(pm_message_t state
)
3051 /* Try to make sure radio will resume powered off */
3052 if (!acpi_evalf(NULL
, NULL
, "\\BLTH", "vd",
3053 TP_ACPI_BLTH_PWR_OFF_ON_RESUME
))
3054 vdbg_printk(TPACPI_DBG_RFKILL
,
3055 "bluetooth power down on resume request failed\n");
3058 static int bluetooth_get_radiosw(void)
3062 if (!tp_features
.bluetooth
)
3065 /* WLSW overrides bluetooth in firmware/hardware, reflect that */
3066 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
)
3067 return RFKILL_STATE_HARD_BLOCKED
;
3069 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3070 if (dbg_bluetoothemul
)
3071 return (tpacpi_bluetooth_emulstate
) ?
3072 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3075 if (!acpi_evalf(hkey_handle
, &status
, "GBDC", "d"))
3078 return ((status
& TP_ACPI_BLUETOOTH_RADIOSSW
) != 0) ?
3079 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3082 static void bluetooth_update_rfk(void)
3086 if (!tpacpi_bluetooth_rfkill
)
3089 status
= bluetooth_get_radiosw();
3092 rfkill_force_state(tpacpi_bluetooth_rfkill
, status
);
3094 vdbg_printk(TPACPI_DBG_RFKILL
,
3095 "forced rfkill state to %d\n",
3099 static int bluetooth_set_radiosw(int radio_on
, int update_rfk
)
3103 if (!tp_features
.bluetooth
)
3106 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3107 * reason to risk weird behaviour. */
3108 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
3112 vdbg_printk(TPACPI_DBG_RFKILL
,
3113 "will %s bluetooth\n", radio_on
? "enable" : "disable");
3115 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3116 if (dbg_bluetoothemul
) {
3117 tpacpi_bluetooth_emulstate
= !!radio_on
;
3119 bluetooth_update_rfk();
3124 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
3126 status
= TP_ACPI_BLUETOOTH_RADIOSSW
;
3129 if (!acpi_evalf(hkey_handle
, NULL
, "SBDC", "vd", status
))
3133 bluetooth_update_rfk();
3138 /* sysfs bluetooth enable ---------------------------------------------- */
3139 static ssize_t
bluetooth_enable_show(struct device
*dev
,
3140 struct device_attribute
*attr
,
3145 printk_deprecated_rfkill_attribute("bluetooth_enable");
3147 status
= bluetooth_get_radiosw();
3151 return snprintf(buf
, PAGE_SIZE
, "%d\n",
3152 (status
== RFKILL_STATE_UNBLOCKED
) ? 1 : 0);
3155 static ssize_t
bluetooth_enable_store(struct device
*dev
,
3156 struct device_attribute
*attr
,
3157 const char *buf
, size_t count
)
3162 printk_deprecated_rfkill_attribute("bluetooth_enable");
3164 if (parse_strtoul(buf
, 1, &t
))
3167 tpacpi_disclose_usertask("bluetooth_enable", "set to %ld\n", t
);
3169 res
= bluetooth_set_radiosw(t
, 1);
3171 return (res
) ? res
: count
;
3174 static struct device_attribute dev_attr_bluetooth_enable
=
3175 __ATTR(bluetooth_enable
, S_IWUSR
| S_IRUGO
,
3176 bluetooth_enable_show
, bluetooth_enable_store
);
3178 /* --------------------------------------------------------------------- */
3180 static struct attribute
*bluetooth_attributes
[] = {
3181 &dev_attr_bluetooth_enable
.attr
,
3185 static const struct attribute_group bluetooth_attr_group
= {
3186 .attrs
= bluetooth_attributes
,
3189 static int tpacpi_bluetooth_rfk_get(void *data
, enum rfkill_state
*state
)
3191 int bts
= bluetooth_get_radiosw();
3200 static int tpacpi_bluetooth_rfk_set(void *data
, enum rfkill_state state
)
3202 dbg_printk(TPACPI_DBG_RFKILL
,
3203 "request to change radio state to %d\n", state
);
3204 return bluetooth_set_radiosw((state
== RFKILL_STATE_UNBLOCKED
), 0);
3207 static void bluetooth_shutdown(void)
3209 /* Order firmware to save current state to NVRAM */
3210 if (!acpi_evalf(NULL
, NULL
, "\\BLTH", "vd",
3211 TP_ACPI_BLTH_SAVE_STATE
))
3212 printk(TPACPI_NOTICE
3213 "failed to save bluetooth state to NVRAM\n");
3215 vdbg_printk(TPACPI_DBG_RFKILL
,
3216 "bluestooth state saved to NVRAM\n");
3219 static void bluetooth_exit(void)
3221 bluetooth_shutdown();
3223 if (tpacpi_bluetooth_rfkill
)
3224 rfkill_unregister(tpacpi_bluetooth_rfkill
);
3226 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
3227 &bluetooth_attr_group
);
3230 static int __init
bluetooth_init(struct ibm_init_struct
*iibm
)
3235 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
3236 "initializing bluetooth subdriver\n");
3238 TPACPI_ACPIHANDLE_INIT(hkey
);
3240 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3241 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
3242 tp_features
.bluetooth
= hkey_handle
&&
3243 acpi_evalf(hkey_handle
, &status
, "GBDC", "qd");
3245 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
3246 "bluetooth is %s, status 0x%02x\n",
3247 str_supported(tp_features
.bluetooth
),
3250 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3251 if (dbg_bluetoothemul
) {
3252 tp_features
.bluetooth
= 1;
3254 "bluetooth switch emulation enabled\n");
3257 if (tp_features
.bluetooth
&&
3258 !(status
& TP_ACPI_BLUETOOTH_HWPRESENT
)) {
3259 /* no bluetooth hardware present in system */
3260 tp_features
.bluetooth
= 0;
3261 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
3262 "bluetooth hardware not installed\n");
3265 if (!tp_features
.bluetooth
)
3268 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
3269 &bluetooth_attr_group
);
3273 res
= tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
,
3274 &tpacpi_bluetooth_rfkill
,
3275 RFKILL_TYPE_BLUETOOTH
,
3276 TPACPI_RFK_BLUETOOTH_SW_NAME
,
3278 tpacpi_bluetooth_rfk_set
,
3279 tpacpi_bluetooth_rfk_get
);
3288 /* procfs -------------------------------------------------------------- */
3289 static int bluetooth_read(char *p
)
3292 int status
= bluetooth_get_radiosw();
3294 if (!tp_features
.bluetooth
)
3295 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
3297 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
3298 (status
== RFKILL_STATE_UNBLOCKED
) ?
3299 "enabled" : "disabled");
3300 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n");
3306 static int bluetooth_write(char *buf
)
3311 if (!tp_features
.bluetooth
)
3314 while ((cmd
= next_cmd(&buf
))) {
3315 if (strlencmp(cmd
, "enable") == 0) {
3317 } else if (strlencmp(cmd
, "disable") == 0) {
3324 tpacpi_disclose_usertask("procfs bluetooth",
3326 state
? "enable" : "disable");
3327 bluetooth_set_radiosw(state
, 1);
3333 static struct ibm_struct bluetooth_driver_data
= {
3334 .name
= "bluetooth",
3335 .read
= bluetooth_read
,
3336 .write
= bluetooth_write
,
3337 .exit
= bluetooth_exit
,
3338 .suspend
= bluetooth_suspend
,
3339 .shutdown
= bluetooth_shutdown
,
3342 /*************************************************************************
3347 /* ACPI GWAN/SWAN bits */
3348 TP_ACPI_WANCARD_HWPRESENT
= 0x01, /* Wan hw available */
3349 TP_ACPI_WANCARD_RADIOSSW
= 0x02, /* Wan radio enabled */
3350 TP_ACPI_WANCARD_RESUMECTRL
= 0x04, /* Wan state at resume:
3354 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
3356 static struct rfkill
*tpacpi_wan_rfkill
;
3358 static void wan_suspend(pm_message_t state
)
3360 /* Try to make sure radio will resume powered off */
3361 if (!acpi_evalf(NULL
, NULL
, "\\WGSV", "qvd",
3362 TP_ACPI_WGSV_PWR_OFF_ON_RESUME
))
3363 vdbg_printk(TPACPI_DBG_RFKILL
,
3364 "WWAN power down on resume request failed\n");
3367 static int wan_get_radiosw(void)
3371 if (!tp_features
.wan
)
3374 /* WLSW overrides WWAN in firmware/hardware, reflect that */
3375 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
)
3376 return RFKILL_STATE_HARD_BLOCKED
;
3378 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3380 return (tpacpi_wwan_emulstate
) ?
3381 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3384 if (!acpi_evalf(hkey_handle
, &status
, "GWAN", "d"))
3387 return ((status
& TP_ACPI_WANCARD_RADIOSSW
) != 0) ?
3388 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3391 static void wan_update_rfk(void)
3395 if (!tpacpi_wan_rfkill
)
3398 status
= wan_get_radiosw();
3401 rfkill_force_state(tpacpi_wan_rfkill
, status
);
3403 vdbg_printk(TPACPI_DBG_RFKILL
,
3404 "forced rfkill state to %d\n",
3408 static int wan_set_radiosw(int radio_on
, int update_rfk
)
3412 if (!tp_features
.wan
)
3415 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3416 * reason to risk weird behaviour. */
3417 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
3421 vdbg_printk(TPACPI_DBG_RFKILL
,
3422 "will %s WWAN\n", radio_on
? "enable" : "disable");
3424 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3426 tpacpi_wwan_emulstate
= !!radio_on
;
3433 /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
3435 status
= TP_ACPI_WANCARD_RADIOSSW
;
3438 if (!acpi_evalf(hkey_handle
, NULL
, "SWAN", "vd", status
))
3447 /* sysfs wan enable ---------------------------------------------------- */
3448 static ssize_t
wan_enable_show(struct device
*dev
,
3449 struct device_attribute
*attr
,
3454 printk_deprecated_rfkill_attribute("wwan_enable");
3456 status
= wan_get_radiosw();
3460 return snprintf(buf
, PAGE_SIZE
, "%d\n",
3461 (status
== RFKILL_STATE_UNBLOCKED
) ? 1 : 0);
3464 static ssize_t
wan_enable_store(struct device
*dev
,
3465 struct device_attribute
*attr
,
3466 const char *buf
, size_t count
)
3471 printk_deprecated_rfkill_attribute("wwan_enable");
3473 if (parse_strtoul(buf
, 1, &t
))
3476 tpacpi_disclose_usertask("wwan_enable", "set to %ld\n", t
);
3478 res
= wan_set_radiosw(t
, 1);
3480 return (res
) ? res
: count
;
3483 static struct device_attribute dev_attr_wan_enable
=
3484 __ATTR(wwan_enable
, S_IWUSR
| S_IRUGO
,
3485 wan_enable_show
, wan_enable_store
);
3487 /* --------------------------------------------------------------------- */
3489 static struct attribute
*wan_attributes
[] = {
3490 &dev_attr_wan_enable
.attr
,
3494 static const struct attribute_group wan_attr_group
= {
3495 .attrs
= wan_attributes
,
3498 static int tpacpi_wan_rfk_get(void *data
, enum rfkill_state
*state
)
3500 int wans
= wan_get_radiosw();
3509 static int tpacpi_wan_rfk_set(void *data
, enum rfkill_state state
)
3511 dbg_printk(TPACPI_DBG_RFKILL
,
3512 "request to change radio state to %d\n", state
);
3513 return wan_set_radiosw((state
== RFKILL_STATE_UNBLOCKED
), 0);
3516 static void wan_shutdown(void)
3518 /* Order firmware to save current state to NVRAM */
3519 if (!acpi_evalf(NULL
, NULL
, "\\WGSV", "vd",
3520 TP_ACPI_WGSV_SAVE_STATE
))
3521 printk(TPACPI_NOTICE
3522 "failed to save WWAN state to NVRAM\n");
3524 vdbg_printk(TPACPI_DBG_RFKILL
,
3525 "WWAN state saved to NVRAM\n");
3528 static void wan_exit(void)
3532 if (tpacpi_wan_rfkill
)
3533 rfkill_unregister(tpacpi_wan_rfkill
);
3535 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
3539 static int __init
wan_init(struct ibm_init_struct
*iibm
)
3544 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
3545 "initializing wan subdriver\n");
3547 TPACPI_ACPIHANDLE_INIT(hkey
);
3549 tp_features
.wan
= hkey_handle
&&
3550 acpi_evalf(hkey_handle
, &status
, "GWAN", "qd");
3552 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
3553 "wan is %s, status 0x%02x\n",
3554 str_supported(tp_features
.wan
),
3557 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3559 tp_features
.wan
= 1;
3561 "wwan switch emulation enabled\n");
3564 if (tp_features
.wan
&&
3565 !(status
& TP_ACPI_WANCARD_HWPRESENT
)) {
3566 /* no wan hardware present in system */
3567 tp_features
.wan
= 0;
3568 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
3569 "wan hardware not installed\n");
3572 if (!tp_features
.wan
)
3575 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
3580 res
= tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID
,
3583 TPACPI_RFK_WWAN_SW_NAME
,
3586 tpacpi_wan_rfk_get
);
3595 /* procfs -------------------------------------------------------------- */
3596 static int wan_read(char *p
)
3599 int status
= wan_get_radiosw();
3601 tpacpi_disclose_usertask("procfs wan", "read");
3603 if (!tp_features
.wan
)
3604 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
3606 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
3607 (status
== RFKILL_STATE_UNBLOCKED
) ?
3608 "enabled" : "disabled");
3609 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n");
3615 static int wan_write(char *buf
)
3620 if (!tp_features
.wan
)
3623 while ((cmd
= next_cmd(&buf
))) {
3624 if (strlencmp(cmd
, "enable") == 0) {
3626 } else if (strlencmp(cmd
, "disable") == 0) {
3633 tpacpi_disclose_usertask("procfs wan",
3635 state
? "enable" : "disable");
3636 wan_set_radiosw(state
, 1);
3642 static struct ibm_struct wan_driver_data
= {
3647 .suspend
= wan_suspend
,
3648 .shutdown
= wan_shutdown
,
3651 /*************************************************************************
3656 /* ACPI GUWB/SUWB bits */
3657 TP_ACPI_UWB_HWPRESENT
= 0x01, /* UWB hw available */
3658 TP_ACPI_UWB_RADIOSSW
= 0x02, /* UWB radio enabled */
3661 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
3663 static struct rfkill
*tpacpi_uwb_rfkill
;
3665 static int uwb_get_radiosw(void)
3669 if (!tp_features
.uwb
)
3672 /* WLSW overrides UWB in firmware/hardware, reflect that */
3673 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
)
3674 return RFKILL_STATE_HARD_BLOCKED
;
3676 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3678 return (tpacpi_uwb_emulstate
) ?
3679 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3682 if (!acpi_evalf(hkey_handle
, &status
, "GUWB", "d"))
3685 return ((status
& TP_ACPI_UWB_RADIOSSW
) != 0) ?
3686 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3689 static void uwb_update_rfk(void)
3693 if (!tpacpi_uwb_rfkill
)
3696 status
= uwb_get_radiosw();
3699 rfkill_force_state(tpacpi_uwb_rfkill
, status
);
3701 vdbg_printk(TPACPI_DBG_RFKILL
,
3702 "forced rfkill state to %d\n",
3706 static int uwb_set_radiosw(int radio_on
, int update_rfk
)
3710 if (!tp_features
.uwb
)
3713 /* WLSW overrides UWB in firmware/hardware, but there is no
3714 * reason to risk weird behaviour. */
3715 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
3719 vdbg_printk(TPACPI_DBG_RFKILL
,
3720 "will %s UWB\n", radio_on
? "enable" : "disable");
3722 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3724 tpacpi_uwb_emulstate
= !!radio_on
;
3731 status
= (radio_on
) ? TP_ACPI_UWB_RADIOSSW
: 0;
3732 if (!acpi_evalf(hkey_handle
, NULL
, "SUWB", "vd", status
))
3741 /* --------------------------------------------------------------------- */
3743 static int tpacpi_uwb_rfk_get(void *data
, enum rfkill_state
*state
)
3745 int uwbs
= uwb_get_radiosw();
3754 static int tpacpi_uwb_rfk_set(void *data
, enum rfkill_state state
)
3756 dbg_printk(TPACPI_DBG_RFKILL
,
3757 "request to change radio state to %d\n", state
);
3758 return uwb_set_radiosw((state
== RFKILL_STATE_UNBLOCKED
), 0);
3761 static void uwb_exit(void)
3763 if (tpacpi_uwb_rfkill
)
3764 rfkill_unregister(tpacpi_uwb_rfkill
);
3767 static int __init
uwb_init(struct ibm_init_struct
*iibm
)
3772 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
3773 "initializing uwb subdriver\n");
3775 TPACPI_ACPIHANDLE_INIT(hkey
);
3777 tp_features
.uwb
= hkey_handle
&&
3778 acpi_evalf(hkey_handle
, &status
, "GUWB", "qd");
3780 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_RFKILL
,
3781 "uwb is %s, status 0x%02x\n",
3782 str_supported(tp_features
.uwb
),
3785 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3787 tp_features
.uwb
= 1;
3789 "uwb switch emulation enabled\n");
3792 if (tp_features
.uwb
&&
3793 !(status
& TP_ACPI_UWB_HWPRESENT
)) {
3794 /* no uwb hardware present in system */
3795 tp_features
.uwb
= 0;
3796 dbg_printk(TPACPI_DBG_INIT
,
3797 "uwb hardware not installed\n");
3800 if (!tp_features
.uwb
)
3803 res
= tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID
,
3806 TPACPI_RFK_UWB_SW_NAME
,
3809 tpacpi_uwb_rfk_get
);
3814 static struct ibm_struct uwb_driver_data
= {
3817 .flags
.experimental
= 1,
3820 /*************************************************************************
3824 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
3826 enum video_access_mode
{
3827 TPACPI_VIDEO_NONE
= 0,
3828 TPACPI_VIDEO_570
, /* 570 */
3829 TPACPI_VIDEO_770
, /* 600e/x, 770e, 770x */
3830 TPACPI_VIDEO_NEW
, /* all others */
3833 enum { /* video status flags, based on VIDEO_570 */
3834 TP_ACPI_VIDEO_S_LCD
= 0x01, /* LCD output enabled */
3835 TP_ACPI_VIDEO_S_CRT
= 0x02, /* CRT output enabled */
3836 TP_ACPI_VIDEO_S_DVI
= 0x08, /* DVI output enabled */
3839 enum { /* TPACPI_VIDEO_570 constants */
3840 TP_ACPI_VIDEO_570_PHSCMD
= 0x87, /* unknown magic constant :( */
3841 TP_ACPI_VIDEO_570_PHSMASK
= 0x03, /* PHS bits that map to
3842 * video_status_flags */
3843 TP_ACPI_VIDEO_570_PHS2CMD
= 0x8b, /* unknown magic constant :( */
3844 TP_ACPI_VIDEO_570_PHS2SET
= 0x80, /* unknown magic constant :( */
3847 static enum video_access_mode video_supported
;
3848 static int video_orig_autosw
;
3850 static int video_autosw_get(void);
3851 static int video_autosw_set(int enable
);
3853 TPACPI_HANDLE(vid2
, root
, "\\_SB.PCI0.AGPB.VID"); /* G41 */
3855 static int __init
video_init(struct ibm_init_struct
*iibm
)
3859 vdbg_printk(TPACPI_DBG_INIT
, "initializing video subdriver\n");
3861 TPACPI_ACPIHANDLE_INIT(vid
);
3862 TPACPI_ACPIHANDLE_INIT(vid2
);
3864 if (vid2_handle
&& acpi_evalf(NULL
, &ivga
, "\\IVGA", "d") && ivga
)
3865 /* G41, assume IVGA doesn't change */
3866 vid_handle
= vid2_handle
;
3869 /* video switching not supported on R30, R31 */
3870 video_supported
= TPACPI_VIDEO_NONE
;
3871 else if (acpi_evalf(vid_handle
, &video_orig_autosw
, "SWIT", "qd"))
3873 video_supported
= TPACPI_VIDEO_570
;
3874 else if (acpi_evalf(vid_handle
, &video_orig_autosw
, "^VADL", "qd"))
3875 /* 600e/x, 770e, 770x */
3876 video_supported
= TPACPI_VIDEO_770
;
3879 video_supported
= TPACPI_VIDEO_NEW
;
3881 vdbg_printk(TPACPI_DBG_INIT
, "video is %s, mode %d\n",
3882 str_supported(video_supported
!= TPACPI_VIDEO_NONE
),
3885 return (video_supported
!= TPACPI_VIDEO_NONE
)? 0 : 1;
3888 static void video_exit(void)
3890 dbg_printk(TPACPI_DBG_EXIT
,
3891 "restoring original video autoswitch mode\n");
3892 if (video_autosw_set(video_orig_autosw
))
3893 printk(TPACPI_ERR
"error while trying to restore original "
3894 "video autoswitch mode\n");
3897 static int video_outputsw_get(void)
3902 switch (video_supported
) {
3903 case TPACPI_VIDEO_570
:
3904 if (!acpi_evalf(NULL
, &i
, "\\_SB.PHS", "dd",
3905 TP_ACPI_VIDEO_570_PHSCMD
))
3907 status
= i
& TP_ACPI_VIDEO_570_PHSMASK
;
3909 case TPACPI_VIDEO_770
:
3910 if (!acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
3913 status
|= TP_ACPI_VIDEO_S_LCD
;
3914 if (!acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
3917 status
|= TP_ACPI_VIDEO_S_CRT
;
3919 case TPACPI_VIDEO_NEW
:
3920 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 1) ||
3921 !acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
3924 status
|= TP_ACPI_VIDEO_S_CRT
;
3926 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0) ||
3927 !acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
3930 status
|= TP_ACPI_VIDEO_S_LCD
;
3931 if (!acpi_evalf(NULL
, &i
, "\\VCDD", "d"))
3934 status
|= TP_ACPI_VIDEO_S_DVI
;
3943 static int video_outputsw_set(int status
)
3948 switch (video_supported
) {
3949 case TPACPI_VIDEO_570
:
3950 res
= acpi_evalf(NULL
, NULL
,
3951 "\\_SB.PHS2", "vdd",
3952 TP_ACPI_VIDEO_570_PHS2CMD
,
3953 status
| TP_ACPI_VIDEO_570_PHS2SET
);
3955 case TPACPI_VIDEO_770
:
3956 autosw
= video_autosw_get();
3960 res
= video_autosw_set(1);
3963 res
= acpi_evalf(vid_handle
, NULL
,
3964 "ASWT", "vdd", status
* 0x100, 0);
3965 if (!autosw
&& video_autosw_set(autosw
)) {
3967 "video auto-switch left enabled due to error\n");
3971 case TPACPI_VIDEO_NEW
:
3972 res
= acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0x80) &&
3973 acpi_evalf(NULL
, NULL
, "\\VSDS", "vdd", status
, 1);
3979 return (res
)? 0 : -EIO
;
3982 static int video_autosw_get(void)
3986 switch (video_supported
) {
3987 case TPACPI_VIDEO_570
:
3988 if (!acpi_evalf(vid_handle
, &autosw
, "SWIT", "d"))
3991 case TPACPI_VIDEO_770
:
3992 case TPACPI_VIDEO_NEW
:
3993 if (!acpi_evalf(vid_handle
, &autosw
, "^VDEE", "d"))
4003 static int video_autosw_set(int enable
)
4005 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", (enable
)? 1 : 0))
4010 static int video_outputsw_cycle(void)
4012 int autosw
= video_autosw_get();
4018 switch (video_supported
) {
4019 case TPACPI_VIDEO_570
:
4020 res
= video_autosw_set(1);
4023 res
= acpi_evalf(ec_handle
, NULL
, "_Q16", "v");
4025 case TPACPI_VIDEO_770
:
4026 case TPACPI_VIDEO_NEW
:
4027 res
= video_autosw_set(1);
4030 res
= acpi_evalf(vid_handle
, NULL
, "VSWT", "v");
4035 if (!autosw
&& video_autosw_set(autosw
)) {
4037 "video auto-switch left enabled due to error\n");
4041 return (res
)? 0 : -EIO
;
4044 static int video_expand_toggle(void)
4046 switch (video_supported
) {
4047 case TPACPI_VIDEO_570
:
4048 return acpi_evalf(ec_handle
, NULL
, "_Q17", "v")?
4050 case TPACPI_VIDEO_770
:
4051 return acpi_evalf(vid_handle
, NULL
, "VEXP", "v")?
4053 case TPACPI_VIDEO_NEW
:
4054 return acpi_evalf(NULL
, NULL
, "\\VEXP", "v")?
4062 static int video_read(char *p
)
4067 if (video_supported
== TPACPI_VIDEO_NONE
) {
4068 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4072 status
= video_outputsw_get();
4076 autosw
= video_autosw_get();
4080 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
4081 len
+= sprintf(p
+ len
, "lcd:\t\t%s\n", enabled(status
, 0));
4082 len
+= sprintf(p
+ len
, "crt:\t\t%s\n", enabled(status
, 1));
4083 if (video_supported
== TPACPI_VIDEO_NEW
)
4084 len
+= sprintf(p
+ len
, "dvi:\t\t%s\n", enabled(status
, 3));
4085 len
+= sprintf(p
+ len
, "auto:\t\t%s\n", enabled(autosw
, 0));
4086 len
+= sprintf(p
+ len
, "commands:\tlcd_enable, lcd_disable\n");
4087 len
+= sprintf(p
+ len
, "commands:\tcrt_enable, crt_disable\n");
4088 if (video_supported
== TPACPI_VIDEO_NEW
)
4089 len
+= sprintf(p
+ len
, "commands:\tdvi_enable, dvi_disable\n");
4090 len
+= sprintf(p
+ len
, "commands:\tauto_enable, auto_disable\n");
4091 len
+= sprintf(p
+ len
, "commands:\tvideo_switch, expand_toggle\n");
4096 static int video_write(char *buf
)
4099 int enable
, disable
, status
;
4102 if (video_supported
== TPACPI_VIDEO_NONE
)
4108 while ((cmd
= next_cmd(&buf
))) {
4109 if (strlencmp(cmd
, "lcd_enable") == 0) {
4110 enable
|= TP_ACPI_VIDEO_S_LCD
;
4111 } else if (strlencmp(cmd
, "lcd_disable") == 0) {
4112 disable
|= TP_ACPI_VIDEO_S_LCD
;
4113 } else if (strlencmp(cmd
, "crt_enable") == 0) {
4114 enable
|= TP_ACPI_VIDEO_S_CRT
;
4115 } else if (strlencmp(cmd
, "crt_disable") == 0) {
4116 disable
|= TP_ACPI_VIDEO_S_CRT
;
4117 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
4118 strlencmp(cmd
, "dvi_enable") == 0) {
4119 enable
|= TP_ACPI_VIDEO_S_DVI
;
4120 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
4121 strlencmp(cmd
, "dvi_disable") == 0) {
4122 disable
|= TP_ACPI_VIDEO_S_DVI
;
4123 } else if (strlencmp(cmd
, "auto_enable") == 0) {
4124 res
= video_autosw_set(1);
4127 } else if (strlencmp(cmd
, "auto_disable") == 0) {
4128 res
= video_autosw_set(0);
4131 } else if (strlencmp(cmd
, "video_switch") == 0) {
4132 res
= video_outputsw_cycle();
4135 } else if (strlencmp(cmd
, "expand_toggle") == 0) {
4136 res
= video_expand_toggle();
4143 if (enable
|| disable
) {
4144 status
= video_outputsw_get();
4147 res
= video_outputsw_set((status
& ~disable
) | enable
);
4155 static struct ibm_struct video_driver_data
= {
4158 .write
= video_write
,
4162 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4164 /*************************************************************************
4165 * Light (thinklight) subdriver
4168 TPACPI_HANDLE(lght
, root
, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4169 TPACPI_HANDLE(ledb
, ec
, "LEDB"); /* G4x */
4171 static int light_get_status(void)
4175 if (tp_features
.light_status
) {
4176 if (!acpi_evalf(ec_handle
, &status
, "KBLT", "d"))
4184 static int light_set_status(int status
)
4188 if (tp_features
.light
) {
4190 rc
= acpi_evalf(cmos_handle
, NULL
, NULL
, "vd",
4192 TP_CMOS_THINKLIGHT_ON
:
4193 TP_CMOS_THINKLIGHT_OFF
);
4195 rc
= acpi_evalf(lght_handle
, NULL
, NULL
, "vd",
4198 return (rc
)? 0 : -EIO
;
4204 static void light_set_status_worker(struct work_struct
*work
)
4206 struct tpacpi_led_classdev
*data
=
4207 container_of(work
, struct tpacpi_led_classdev
, work
);
4209 if (likely(tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
))
4210 light_set_status((data
->new_brightness
!= LED_OFF
));
4213 static void light_sysfs_set(struct led_classdev
*led_cdev
,
4214 enum led_brightness brightness
)
4216 struct tpacpi_led_classdev
*data
=
4217 container_of(led_cdev
,
4218 struct tpacpi_led_classdev
,
4220 data
->new_brightness
= brightness
;
4221 queue_work(tpacpi_wq
, &data
->work
);
4224 static enum led_brightness
light_sysfs_get(struct led_classdev
*led_cdev
)
4226 return (light_get_status() == 1)? LED_FULL
: LED_OFF
;
4229 static struct tpacpi_led_classdev tpacpi_led_thinklight
= {
4231 .name
= "tpacpi::thinklight",
4232 .brightness_set
= &light_sysfs_set
,
4233 .brightness_get
= &light_sysfs_get
,
4237 static int __init
light_init(struct ibm_init_struct
*iibm
)
4241 vdbg_printk(TPACPI_DBG_INIT
, "initializing light subdriver\n");
4243 TPACPI_ACPIHANDLE_INIT(ledb
);
4244 TPACPI_ACPIHANDLE_INIT(lght
);
4245 TPACPI_ACPIHANDLE_INIT(cmos
);
4246 INIT_WORK(&tpacpi_led_thinklight
.work
, light_set_status_worker
);
4248 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
4249 tp_features
.light
= (cmos_handle
|| lght_handle
) && !ledb_handle
;
4251 if (tp_features
.light
)
4252 /* light status not supported on
4253 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
4254 tp_features
.light_status
=
4255 acpi_evalf(ec_handle
, NULL
, "KBLT", "qv");
4257 vdbg_printk(TPACPI_DBG_INIT
, "light is %s, light status is %s\n",
4258 str_supported(tp_features
.light
),
4259 str_supported(tp_features
.light_status
));
4261 if (!tp_features
.light
)
4264 rc
= led_classdev_register(&tpacpi_pdev
->dev
,
4265 &tpacpi_led_thinklight
.led_classdev
);
4268 tp_features
.light
= 0;
4269 tp_features
.light_status
= 0;
4277 static void light_exit(void)
4279 led_classdev_unregister(&tpacpi_led_thinklight
.led_classdev
);
4280 if (work_pending(&tpacpi_led_thinklight
.work
))
4281 flush_workqueue(tpacpi_wq
);
4284 static int light_read(char *p
)
4289 if (!tp_features
.light
) {
4290 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4291 } else if (!tp_features
.light_status
) {
4292 len
+= sprintf(p
+ len
, "status:\t\tunknown\n");
4293 len
+= sprintf(p
+ len
, "commands:\ton, off\n");
4295 status
= light_get_status();
4298 len
+= sprintf(p
+ len
, "status:\t\t%s\n", onoff(status
, 0));
4299 len
+= sprintf(p
+ len
, "commands:\ton, off\n");
4305 static int light_write(char *buf
)
4310 if (!tp_features
.light
)
4313 while ((cmd
= next_cmd(&buf
))) {
4314 if (strlencmp(cmd
, "on") == 0) {
4316 } else if (strlencmp(cmd
, "off") == 0) {
4322 return light_set_status(newstatus
);
4325 static struct ibm_struct light_driver_data
= {
4328 .write
= light_write
,
4332 /*************************************************************************
4336 #ifdef CONFIG_THINKPAD_ACPI_DOCK
4338 static void dock_notify(struct ibm_struct
*ibm
, u32 event
);
4339 static int dock_read(char *p
);
4340 static int dock_write(char *buf
);
4342 TPACPI_HANDLE(dock
, root
, "\\_SB.GDCK", /* X30, X31, X40 */
4343 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
4344 "\\_SB.PCI0.PCI1.DOCK", /* all others */
4345 "\\_SB.PCI.ISA.SLCE", /* 570 */
4346 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
4348 /* don't list other alternatives as we install a notify handler on the 570 */
4349 TPACPI_HANDLE(pci
, root
, "\\_SB.PCI"); /* 570 */
4351 static const struct acpi_device_id ibm_pci_device_ids
[] = {
4352 {PCI_ROOT_HID_STRING
, 0},
4356 static struct tp_acpi_drv_struct ibm_dock_acpidriver
[2] = {
4358 .notify
= dock_notify
,
4359 .handle
= &dock_handle
,
4360 .type
= ACPI_SYSTEM_NOTIFY
,
4363 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
4364 * We just use it to get notifications of dock hotplug
4365 * in very old thinkpads */
4366 .hid
= ibm_pci_device_ids
,
4367 .notify
= dock_notify
,
4368 .handle
= &pci_handle
,
4369 .type
= ACPI_SYSTEM_NOTIFY
,
4373 static struct ibm_struct dock_driver_data
[2] = {
4377 .write
= dock_write
,
4378 .acpi
= &ibm_dock_acpidriver
[0],
4382 .acpi
= &ibm_dock_acpidriver
[1],
4386 #define dock_docked() (_sta(dock_handle) & 1)
4388 static int __init
dock_init(struct ibm_init_struct
*iibm
)
4390 vdbg_printk(TPACPI_DBG_INIT
, "initializing dock subdriver\n");
4392 TPACPI_ACPIHANDLE_INIT(dock
);
4394 vdbg_printk(TPACPI_DBG_INIT
, "dock is %s\n",
4395 str_supported(dock_handle
!= NULL
));
4397 return (dock_handle
)? 0 : 1;
4400 static int __init
dock_init2(struct ibm_init_struct
*iibm
)
4404 vdbg_printk(TPACPI_DBG_INIT
, "initializing dock subdriver part 2\n");
4406 if (dock_driver_data
[0].flags
.acpi_driver_registered
&&
4407 dock_driver_data
[0].flags
.acpi_notify_installed
) {
4408 TPACPI_ACPIHANDLE_INIT(pci
);
4409 dock2_needed
= (pci_handle
!= NULL
);
4410 vdbg_printk(TPACPI_DBG_INIT
,
4411 "dock PCI handler for the TP 570 is %s\n",
4412 str_supported(dock2_needed
));
4414 vdbg_printk(TPACPI_DBG_INIT
,
4415 "dock subdriver part 2 not required\n");
4419 return (dock2_needed
)? 0 : 1;
4422 static void dock_notify(struct ibm_struct
*ibm
, u32 event
)
4424 int docked
= dock_docked();
4425 int pci
= ibm
->acpi
->hid
&& ibm
->acpi
->device
&&
4426 acpi_match_device_ids(ibm
->acpi
->device
, ibm_pci_device_ids
);
4429 if (event
== 1 && !pci
) /* 570 */
4430 data
= 1; /* button */
4431 else if (event
== 1 && pci
) /* 570 */
4432 data
= 3; /* dock */
4433 else if (event
== 3 && docked
)
4434 data
= 1; /* button */
4435 else if (event
== 3 && !docked
)
4436 data
= 2; /* undock */
4437 else if (event
== 0 && docked
)
4438 data
= 3; /* dock */
4440 printk(TPACPI_ERR
"unknown dock event %d, status %d\n",
4441 event
, _sta(dock_handle
));
4442 data
= 0; /* unknown */
4444 acpi_bus_generate_proc_event(ibm
->acpi
->device
, event
, data
);
4445 acpi_bus_generate_netlink_event(ibm
->acpi
->device
->pnp
.device_class
,
4446 dev_name(&ibm
->acpi
->device
->dev
),
4450 static int dock_read(char *p
)
4453 int docked
= dock_docked();
4456 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4458 len
+= sprintf(p
+ len
, "status:\t\tundocked\n");
4460 len
+= sprintf(p
+ len
, "status:\t\tdocked\n");
4461 len
+= sprintf(p
+ len
, "commands:\tdock, undock\n");
4467 static int dock_write(char *buf
)
4474 while ((cmd
= next_cmd(&buf
))) {
4475 if (strlencmp(cmd
, "undock") == 0) {
4476 if (!acpi_evalf(dock_handle
, NULL
, "_DCK", "vd", 0) ||
4477 !acpi_evalf(dock_handle
, NULL
, "_EJ0", "vd", 1))
4479 } else if (strlencmp(cmd
, "dock") == 0) {
4480 if (!acpi_evalf(dock_handle
, NULL
, "_DCK", "vd", 1))
4489 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
4491 /*************************************************************************
4495 #ifdef CONFIG_THINKPAD_ACPI_BAY
4497 TPACPI_HANDLE(bay
, root
, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
4498 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
4499 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
4500 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
4501 ); /* A21e, R30, R31 */
4502 TPACPI_HANDLE(bay_ej
, bay
, "_EJ3", /* 600e/x, A2xm/p, A3x */
4503 "_EJ0", /* all others */
4504 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
4505 TPACPI_HANDLE(bay2
, root
, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
4506 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
4508 TPACPI_HANDLE(bay2_ej
, bay2
, "_EJ3", /* 600e/x, 770e, A3x */
4512 static int __init
bay_init(struct ibm_init_struct
*iibm
)
4514 vdbg_printk(TPACPI_DBG_INIT
, "initializing bay subdriver\n");
4516 TPACPI_ACPIHANDLE_INIT(bay
);
4518 TPACPI_ACPIHANDLE_INIT(bay_ej
);
4519 TPACPI_ACPIHANDLE_INIT(bay2
);
4521 TPACPI_ACPIHANDLE_INIT(bay2_ej
);
4523 tp_features
.bay_status
= bay_handle
&&
4524 acpi_evalf(bay_handle
, NULL
, "_STA", "qv");
4525 tp_features
.bay_status2
= bay2_handle
&&
4526 acpi_evalf(bay2_handle
, NULL
, "_STA", "qv");
4528 tp_features
.bay_eject
= bay_handle
&& bay_ej_handle
&&
4529 (strlencmp(bay_ej_path
, "_EJ0") == 0 || experimental
);
4530 tp_features
.bay_eject2
= bay2_handle
&& bay2_ej_handle
&&
4531 (strlencmp(bay2_ej_path
, "_EJ0") == 0 || experimental
);
4533 vdbg_printk(TPACPI_DBG_INIT
,
4534 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
4535 str_supported(tp_features
.bay_status
),
4536 str_supported(tp_features
.bay_eject
),
4537 str_supported(tp_features
.bay_status2
),
4538 str_supported(tp_features
.bay_eject2
));
4540 return (tp_features
.bay_status
|| tp_features
.bay_eject
||
4541 tp_features
.bay_status2
|| tp_features
.bay_eject2
)? 0 : 1;
4544 static void bay_notify(struct ibm_struct
*ibm
, u32 event
)
4546 acpi_bus_generate_proc_event(ibm
->acpi
->device
, event
, 0);
4547 acpi_bus_generate_netlink_event(ibm
->acpi
->device
->pnp
.device_class
,
4548 dev_name(&ibm
->acpi
->device
->dev
),
4552 #define bay_occupied(b) (_sta(b##_handle) & 1)
4554 static int bay_read(char *p
)
4557 int occupied
= bay_occupied(bay
);
4558 int occupied2
= bay_occupied(bay2
);
4561 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
4562 tp_features
.bay_status
?
4563 (occupied
? "occupied" : "unoccupied") :
4565 if (tp_features
.bay_status2
)
4566 len
+= sprintf(p
+ len
, "status2:\t%s\n", occupied2
?
4567 "occupied" : "unoccupied");
4569 eject
= tp_features
.bay_eject
&& occupied
;
4570 eject2
= tp_features
.bay_eject2
&& occupied2
;
4572 if (eject
&& eject2
)
4573 len
+= sprintf(p
+ len
, "commands:\teject, eject2\n");
4575 len
+= sprintf(p
+ len
, "commands:\teject\n");
4577 len
+= sprintf(p
+ len
, "commands:\teject2\n");
4582 static int bay_write(char *buf
)
4586 if (!tp_features
.bay_eject
&& !tp_features
.bay_eject2
)
4589 while ((cmd
= next_cmd(&buf
))) {
4590 if (tp_features
.bay_eject
&& strlencmp(cmd
, "eject") == 0) {
4591 if (!acpi_evalf(bay_ej_handle
, NULL
, NULL
, "vd", 1))
4593 } else if (tp_features
.bay_eject2
&&
4594 strlencmp(cmd
, "eject2") == 0) {
4595 if (!acpi_evalf(bay2_ej_handle
, NULL
, NULL
, "vd", 1))
4604 static struct tp_acpi_drv_struct ibm_bay_acpidriver
= {
4605 .notify
= bay_notify
,
4606 .handle
= &bay_handle
,
4607 .type
= ACPI_SYSTEM_NOTIFY
,
4610 static struct ibm_struct bay_driver_data
= {
4614 .acpi
= &ibm_bay_acpidriver
,
4617 #endif /* CONFIG_THINKPAD_ACPI_BAY */
4619 /*************************************************************************
4623 /* sysfs cmos_command -------------------------------------------------- */
4624 static ssize_t
cmos_command_store(struct device
*dev
,
4625 struct device_attribute
*attr
,
4626 const char *buf
, size_t count
)
4628 unsigned long cmos_cmd
;
4631 if (parse_strtoul(buf
, 21, &cmos_cmd
))
4634 res
= issue_thinkpad_cmos_command(cmos_cmd
);
4635 return (res
)? res
: count
;
4638 static struct device_attribute dev_attr_cmos_command
=
4639 __ATTR(cmos_command
, S_IWUSR
, NULL
, cmos_command_store
);
4641 /* --------------------------------------------------------------------- */
4643 static int __init
cmos_init(struct ibm_init_struct
*iibm
)
4647 vdbg_printk(TPACPI_DBG_INIT
,
4648 "initializing cmos commands subdriver\n");
4650 TPACPI_ACPIHANDLE_INIT(cmos
);
4652 vdbg_printk(TPACPI_DBG_INIT
, "cmos commands are %s\n",
4653 str_supported(cmos_handle
!= NULL
));
4655 res
= device_create_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4659 return (cmos_handle
)? 0 : 1;
4662 static void cmos_exit(void)
4664 device_remove_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4667 static int cmos_read(char *p
)
4671 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4672 R30, R31, T20-22, X20-21 */
4674 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4676 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
4677 len
+= sprintf(p
+ len
, "commands:\t<cmd> (<cmd> is 0-21)\n");
4683 static int cmos_write(char *buf
)
4688 while ((cmd
= next_cmd(&buf
))) {
4689 if (sscanf(cmd
, "%u", &cmos_cmd
) == 1 &&
4690 cmos_cmd
>= 0 && cmos_cmd
<= 21) {
4695 res
= issue_thinkpad_cmos_command(cmos_cmd
);
4703 static struct ibm_struct cmos_driver_data
= {
4706 .write
= cmos_write
,
4710 /*************************************************************************
4714 enum led_access_mode
{
4715 TPACPI_LED_NONE
= 0,
4716 TPACPI_LED_570
, /* 570 */
4717 TPACPI_LED_OLD
, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4718 TPACPI_LED_NEW
, /* all others */
4721 enum { /* For TPACPI_LED_OLD */
4722 TPACPI_LED_EC_HLCL
= 0x0c, /* EC reg to get led to power on */
4723 TPACPI_LED_EC_HLBL
= 0x0d, /* EC reg to blink a lit led */
4724 TPACPI_LED_EC_HLMS
= 0x0e, /* EC reg to select led to command */
4733 static enum led_access_mode led_supported
;
4735 TPACPI_HANDLE(led
, ec
, "SLED", /* 570 */
4736 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
4737 /* T20-22, X20-21 */
4738 "LED", /* all others */
4741 #define TPACPI_LED_NUMLEDS 8
4742 static struct tpacpi_led_classdev
*tpacpi_leds
;
4743 static enum led_status_t tpacpi_led_state_cache
[TPACPI_LED_NUMLEDS
];
4744 static const char * const tpacpi_led_names
[TPACPI_LED_NUMLEDS
] = {
4745 /* there's a limit of 19 chars + NULL before 2.6.26 */
4747 "tpacpi:orange:batt",
4748 "tpacpi:green:batt",
4749 "tpacpi::dock_active",
4750 "tpacpi::bay_active",
4751 "tpacpi::dock_batt",
4752 "tpacpi::unknown_led",
4755 #define TPACPI_SAFE_LEDS 0x0081U
4757 static inline bool tpacpi_is_led_restricted(const unsigned int led
)
4759 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
4762 return (TPACPI_SAFE_LEDS
& (1 << led
)) == 0;
4766 static int led_get_status(const unsigned int led
)
4769 enum led_status_t led_s
;
4771 switch (led_supported
) {
4772 case TPACPI_LED_570
:
4773 if (!acpi_evalf(ec_handle
,
4774 &status
, "GLED", "dd", 1 << led
))
4776 led_s
= (status
== 0)?
4781 tpacpi_led_state_cache
[led
] = led_s
;
4790 static int led_set_status(const unsigned int led
,
4791 const enum led_status_t ledstatus
)
4793 /* off, on, blink. Index is led_status_t */
4794 static const unsigned int led_sled_arg1
[] = { 0, 1, 3 };
4795 static const unsigned int led_led_arg1
[] = { 0, 0x80, 0xc0 };
4799 switch (led_supported
) {
4800 case TPACPI_LED_570
:
4802 if (unlikely(led
> 7))
4804 if (unlikely(tpacpi_is_led_restricted(led
)))
4806 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
4807 (1 << led
), led_sled_arg1
[ledstatus
]))
4810 case TPACPI_LED_OLD
:
4811 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
4812 if (unlikely(led
> 7))
4814 if (unlikely(tpacpi_is_led_restricted(led
)))
4816 rc
= ec_write(TPACPI_LED_EC_HLMS
, (1 << led
));
4818 rc
= ec_write(TPACPI_LED_EC_HLBL
,
4819 (ledstatus
== TPACPI_LED_BLINK
) << led
);
4821 rc
= ec_write(TPACPI_LED_EC_HLCL
,
4822 (ledstatus
!= TPACPI_LED_OFF
) << led
);
4824 case TPACPI_LED_NEW
:
4826 if (unlikely(led
>= TPACPI_LED_NUMLEDS
))
4828 if (unlikely(tpacpi_is_led_restricted(led
)))
4830 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
4831 led
, led_led_arg1
[ledstatus
]))
4839 tpacpi_led_state_cache
[led
] = ledstatus
;
4844 static void led_sysfs_set_status(unsigned int led
,
4845 enum led_brightness brightness
)
4848 (brightness
== LED_OFF
) ?
4850 (tpacpi_led_state_cache
[led
] == TPACPI_LED_BLINK
) ?
4851 TPACPI_LED_BLINK
: TPACPI_LED_ON
);
4854 static void led_set_status_worker(struct work_struct
*work
)
4856 struct tpacpi_led_classdev
*data
=
4857 container_of(work
, struct tpacpi_led_classdev
, work
);
4859 if (likely(tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
))
4860 led_sysfs_set_status(data
->led
, data
->new_brightness
);
4863 static void led_sysfs_set(struct led_classdev
*led_cdev
,
4864 enum led_brightness brightness
)
4866 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
4867 struct tpacpi_led_classdev
, led_classdev
);
4869 data
->new_brightness
= brightness
;
4870 queue_work(tpacpi_wq
, &data
->work
);
4873 static int led_sysfs_blink_set(struct led_classdev
*led_cdev
,
4874 unsigned long *delay_on
, unsigned long *delay_off
)
4876 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
4877 struct tpacpi_led_classdev
, led_classdev
);
4879 /* Can we choose the flash rate? */
4880 if (*delay_on
== 0 && *delay_off
== 0) {
4881 /* yes. set them to the hardware blink rate (1 Hz) */
4882 *delay_on
= 500; /* ms */
4883 *delay_off
= 500; /* ms */
4884 } else if ((*delay_on
!= 500) || (*delay_off
!= 500))
4887 data
->new_brightness
= TPACPI_LED_BLINK
;
4888 queue_work(tpacpi_wq
, &data
->work
);
4893 static enum led_brightness
led_sysfs_get(struct led_classdev
*led_cdev
)
4897 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
4898 struct tpacpi_led_classdev
, led_classdev
);
4900 rc
= led_get_status(data
->led
);
4902 if (rc
== TPACPI_LED_OFF
|| rc
< 0)
4903 rc
= LED_OFF
; /* no error handling in led class :( */
4910 static void led_exit(void)
4914 for (i
= 0; i
< TPACPI_LED_NUMLEDS
; i
++) {
4915 if (tpacpi_leds
[i
].led_classdev
.name
)
4916 led_classdev_unregister(&tpacpi_leds
[i
].led_classdev
);
4922 static int __init
tpacpi_init_led(unsigned int led
)
4926 tpacpi_leds
[led
].led
= led
;
4928 tpacpi_leds
[led
].led_classdev
.brightness_set
= &led_sysfs_set
;
4929 tpacpi_leds
[led
].led_classdev
.blink_set
= &led_sysfs_blink_set
;
4930 if (led_supported
== TPACPI_LED_570
)
4931 tpacpi_leds
[led
].led_classdev
.brightness_get
=
4934 tpacpi_leds
[led
].led_classdev
.name
= tpacpi_led_names
[led
];
4936 INIT_WORK(&tpacpi_leds
[led
].work
, led_set_status_worker
);
4938 rc
= led_classdev_register(&tpacpi_pdev
->dev
,
4939 &tpacpi_leds
[led
].led_classdev
);
4941 tpacpi_leds
[led
].led_classdev
.name
= NULL
;
4946 static int __init
led_init(struct ibm_init_struct
*iibm
)
4951 vdbg_printk(TPACPI_DBG_INIT
, "initializing LED subdriver\n");
4953 TPACPI_ACPIHANDLE_INIT(led
);
4956 /* led not supported on R30, R31 */
4957 led_supported
= TPACPI_LED_NONE
;
4958 else if (strlencmp(led_path
, "SLED") == 0)
4960 led_supported
= TPACPI_LED_570
;
4961 else if (strlencmp(led_path
, "SYSL") == 0)
4962 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4963 led_supported
= TPACPI_LED_OLD
;
4966 led_supported
= TPACPI_LED_NEW
;
4968 vdbg_printk(TPACPI_DBG_INIT
, "LED commands are %s, mode %d\n",
4969 str_supported(led_supported
), led_supported
);
4971 tpacpi_leds
= kzalloc(sizeof(*tpacpi_leds
) * TPACPI_LED_NUMLEDS
,
4974 printk(TPACPI_ERR
"Out of memory for LED data\n");
4978 for (i
= 0; i
< TPACPI_LED_NUMLEDS
; i
++) {
4979 if (!tpacpi_is_led_restricted(i
)) {
4980 rc
= tpacpi_init_led(i
);
4988 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
4989 if (led_supported
!= TPACPI_LED_NONE
)
4990 printk(TPACPI_NOTICE
4991 "warning: userspace override of important "
4992 "firmware LEDs is enabled\n");
4994 return (led_supported
!= TPACPI_LED_NONE
)? 0 : 1;
4997 #define str_led_status(s) \
4998 ((s) == TPACPI_LED_OFF ? "off" : \
4999 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
5001 static int led_read(char *p
)
5005 if (!led_supported
) {
5006 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
5009 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
5011 if (led_supported
== TPACPI_LED_570
) {
5014 for (i
= 0; i
< 8; i
++) {
5015 status
= led_get_status(i
);
5018 len
+= sprintf(p
+ len
, "%d:\t\t%s\n",
5019 i
, str_led_status(status
));
5023 len
+= sprintf(p
+ len
, "commands:\t"
5024 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
5029 static int led_write(char *buf
)
5033 enum led_status_t s
;
5038 while ((cmd
= next_cmd(&buf
))) {
5039 if (sscanf(cmd
, "%d", &led
) != 1 || led
< 0 || led
> 7)
5042 if (strstr(cmd
, "off")) {
5044 } else if (strstr(cmd
, "on")) {
5046 } else if (strstr(cmd
, "blink")) {
5047 s
= TPACPI_LED_BLINK
;
5052 rc
= led_set_status(led
, s
);
5060 static struct ibm_struct led_driver_data
= {
5067 /*************************************************************************
5071 TPACPI_HANDLE(beep
, ec
, "BEEP"); /* all except R30, R31 */
5073 static int __init
beep_init(struct ibm_init_struct
*iibm
)
5075 vdbg_printk(TPACPI_DBG_INIT
, "initializing beep subdriver\n");
5077 TPACPI_ACPIHANDLE_INIT(beep
);
5079 vdbg_printk(TPACPI_DBG_INIT
, "beep is %s\n",
5080 str_supported(beep_handle
!= NULL
));
5082 return (beep_handle
)? 0 : 1;
5085 static int beep_read(char *p
)
5090 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
5092 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
5093 len
+= sprintf(p
+ len
, "commands:\t<cmd> (<cmd> is 0-17)\n");
5099 static int beep_write(char *buf
)
5107 while ((cmd
= next_cmd(&buf
))) {
5108 if (sscanf(cmd
, "%u", &beep_cmd
) == 1 &&
5109 beep_cmd
>= 0 && beep_cmd
<= 17) {
5113 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vdd", beep_cmd
, 0))
5120 static struct ibm_struct beep_driver_data
= {
5123 .write
= beep_write
,
5126 /*************************************************************************
5130 enum thermal_access_mode
{
5131 TPACPI_THERMAL_NONE
= 0, /* No thermal support */
5132 TPACPI_THERMAL_ACPI_TMP07
, /* Use ACPI TMP0-7 */
5133 TPACPI_THERMAL_ACPI_UPDT
, /* Use ACPI TMP0-7 with UPDT */
5134 TPACPI_THERMAL_TPEC_8
, /* Use ACPI EC regs, 8 sensors */
5135 TPACPI_THERMAL_TPEC_16
, /* Use ACPI EC regs, 16 sensors */
5138 enum { /* TPACPI_THERMAL_TPEC_* */
5139 TP_EC_THERMAL_TMP0
= 0x78, /* ACPI EC regs TMP 0..7 */
5140 TP_EC_THERMAL_TMP8
= 0xC0, /* ACPI EC regs TMP 8..15 */
5141 TP_EC_THERMAL_TMP_NA
= -128, /* ACPI EC sensor not available */
5144 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5145 struct ibm_thermal_sensors_struct
{
5146 s32 temp
[TPACPI_MAX_THERMAL_SENSORS
];
5149 static enum thermal_access_mode thermal_read_mode
;
5151 /* idx is zero-based */
5152 static int thermal_get_sensor(int idx
, s32
*value
)
5158 t
= TP_EC_THERMAL_TMP0
;
5160 switch (thermal_read_mode
) {
5161 #if TPACPI_MAX_THERMAL_SENSORS >= 16
5162 case TPACPI_THERMAL_TPEC_16
:
5163 if (idx
>= 8 && idx
<= 15) {
5164 t
= TP_EC_THERMAL_TMP8
;
5169 case TPACPI_THERMAL_TPEC_8
:
5171 if (!acpi_ec_read(t
+ idx
, &tmp
))
5173 *value
= tmp
* 1000;
5178 case TPACPI_THERMAL_ACPI_UPDT
:
5180 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
5181 if (!acpi_evalf(ec_handle
, NULL
, "UPDT", "v"))
5183 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
5185 *value
= (t
- 2732) * 100;
5190 case TPACPI_THERMAL_ACPI_TMP07
:
5192 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
5193 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
5195 if (t
> 127 || t
< -127)
5196 t
= TP_EC_THERMAL_TMP_NA
;
5202 case TPACPI_THERMAL_NONE
:
5210 static int thermal_get_sensors(struct ibm_thermal_sensors_struct
*s
)
5221 if (thermal_read_mode
== TPACPI_THERMAL_TPEC_16
)
5224 for (i
= 0 ; i
< n
; i
++) {
5225 res
= thermal_get_sensor(i
, &s
->temp
[i
]);
5233 /* sysfs temp##_input -------------------------------------------------- */
5235 static ssize_t
thermal_temp_input_show(struct device
*dev
,
5236 struct device_attribute
*attr
,
5239 struct sensor_device_attribute
*sensor_attr
=
5240 to_sensor_dev_attr(attr
);
5241 int idx
= sensor_attr
->index
;
5245 res
= thermal_get_sensor(idx
, &value
);
5248 if (value
== TP_EC_THERMAL_TMP_NA
* 1000)
5251 return snprintf(buf
, PAGE_SIZE
, "%d\n", value
);
5254 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
5255 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5256 thermal_temp_input_show, NULL, _idxB)
5258 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input
[] = {
5259 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5260 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5261 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5262 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5263 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5264 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5265 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5266 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5267 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5268 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5269 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5270 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5271 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5272 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5273 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5274 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5277 #define THERMAL_ATTRS(X) \
5278 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5280 static struct attribute
*thermal_temp_input_attr
[] = {
5300 static const struct attribute_group thermal_temp_input16_group
= {
5301 .attrs
= thermal_temp_input_attr
5304 static const struct attribute_group thermal_temp_input8_group
= {
5305 .attrs
= &thermal_temp_input_attr
[8]
5308 #undef THERMAL_SENSOR_ATTR_TEMP
5309 #undef THERMAL_ATTRS
5311 /* --------------------------------------------------------------------- */
5313 static int __init
thermal_init(struct ibm_init_struct
*iibm
)
5320 vdbg_printk(TPACPI_DBG_INIT
, "initializing thermal subdriver\n");
5322 acpi_tmp7
= acpi_evalf(ec_handle
, NULL
, "TMP7", "qv");
5324 if (thinkpad_id
.ec_model
) {
5326 * Direct EC access mode: sensors at registers
5327 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5328 * non-implemented, thermal sensors return 0x80 when
5333 for (i
= 0; i
< 8; i
++) {
5334 if (acpi_ec_read(TP_EC_THERMAL_TMP0
+ i
, &t
)) {
5340 if (acpi_ec_read(TP_EC_THERMAL_TMP8
+ i
, &t
)) {
5348 /* This is sheer paranoia, but we handle it anyway */
5351 "ThinkPad ACPI EC access misbehaving, "
5352 "falling back to ACPI TMPx access "
5354 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5357 "ThinkPad ACPI EC access misbehaving, "
5358 "disabling thermal sensors access\n");
5359 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5364 TPACPI_THERMAL_TPEC_16
: TPACPI_THERMAL_TPEC_8
;
5366 } else if (acpi_tmp7
) {
5367 if (acpi_evalf(ec_handle
, NULL
, "UPDT", "qv")) {
5368 /* 600e/x, 770e, 770x */
5369 thermal_read_mode
= TPACPI_THERMAL_ACPI_UPDT
;
5371 /* Standard ACPI TMPx access, max 8 sensors */
5372 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5375 /* temperatures not supported on 570, G4x, R30, R31, R32 */
5376 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5379 vdbg_printk(TPACPI_DBG_INIT
, "thermal is %s, mode %d\n",
5380 str_supported(thermal_read_mode
!= TPACPI_THERMAL_NONE
),
5383 switch (thermal_read_mode
) {
5384 case TPACPI_THERMAL_TPEC_16
:
5385 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5386 &thermal_temp_input16_group
);
5390 case TPACPI_THERMAL_TPEC_8
:
5391 case TPACPI_THERMAL_ACPI_TMP07
:
5392 case TPACPI_THERMAL_ACPI_UPDT
:
5393 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5394 &thermal_temp_input8_group
);
5398 case TPACPI_THERMAL_NONE
:
5406 static void thermal_exit(void)
5408 switch (thermal_read_mode
) {
5409 case TPACPI_THERMAL_TPEC_16
:
5410 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5411 &thermal_temp_input16_group
);
5413 case TPACPI_THERMAL_TPEC_8
:
5414 case TPACPI_THERMAL_ACPI_TMP07
:
5415 case TPACPI_THERMAL_ACPI_UPDT
:
5416 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5417 &thermal_temp_input16_group
);
5419 case TPACPI_THERMAL_NONE
:
5425 static int thermal_read(char *p
)
5429 struct ibm_thermal_sensors_struct t
;
5431 n
= thermal_get_sensors(&t
);
5432 if (unlikely(n
< 0))
5435 len
+= sprintf(p
+ len
, "temperatures:\t");
5438 for (i
= 0; i
< (n
- 1); i
++)
5439 len
+= sprintf(p
+ len
, "%d ", t
.temp
[i
] / 1000);
5440 len
+= sprintf(p
+ len
, "%d\n", t
.temp
[i
] / 1000);
5442 len
+= sprintf(p
+ len
, "not supported\n");
5447 static struct ibm_struct thermal_driver_data
= {
5449 .read
= thermal_read
,
5450 .exit
= thermal_exit
,
5453 /*************************************************************************
5457 static u8 ecdump_regs
[256];
5459 static int ecdump_read(char *p
)
5465 len
+= sprintf(p
+ len
, "EC "
5466 " +00 +01 +02 +03 +04 +05 +06 +07"
5467 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5468 for (i
= 0; i
< 256; i
+= 16) {
5469 len
+= sprintf(p
+ len
, "EC 0x%02x:", i
);
5470 for (j
= 0; j
< 16; j
++) {
5471 if (!acpi_ec_read(i
+ j
, &v
))
5473 if (v
!= ecdump_regs
[i
+ j
])
5474 len
+= sprintf(p
+ len
, " *%02x", v
);
5476 len
+= sprintf(p
+ len
, " %02x", v
);
5477 ecdump_regs
[i
+ j
] = v
;
5479 len
+= sprintf(p
+ len
, "\n");
5484 /* These are way too dangerous to advertise openly... */
5486 len
+= sprintf(p
+ len
, "commands:\t0x<offset> 0x<value>"
5487 " (<offset> is 00-ff, <value> is 00-ff)\n");
5488 len
+= sprintf(p
+ len
, "commands:\t0x<offset> <value> "
5489 " (<offset> is 00-ff, <value> is 0-255)\n");
5494 static int ecdump_write(char *buf
)
5499 while ((cmd
= next_cmd(&buf
))) {
5500 if (sscanf(cmd
, "0x%x 0x%x", &i
, &v
) == 2) {
5502 } else if (sscanf(cmd
, "0x%x %u", &i
, &v
) == 2) {
5506 if (i
>= 0 && i
< 256 && v
>= 0 && v
< 256) {
5507 if (!acpi_ec_write(i
, v
))
5516 static struct ibm_struct ecdump_driver_data
= {
5518 .read
= ecdump_read
,
5519 .write
= ecdump_write
,
5520 .flags
.experimental
= 1,
5523 /*************************************************************************
5524 * Backlight/brightness subdriver
5527 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5530 TP_EC_BACKLIGHT
= 0x31,
5532 /* TP_EC_BACKLIGHT bitmasks */
5533 TP_EC_BACKLIGHT_LVLMSK
= 0x1F,
5534 TP_EC_BACKLIGHT_CMDMSK
= 0xE0,
5535 TP_EC_BACKLIGHT_MAPSW
= 0x20,
5538 static struct backlight_device
*ibm_backlight_device
;
5539 static int brightness_mode
;
5540 static unsigned int brightness_enable
= 2; /* 2 = auto, 0 = no, 1 = yes */
5542 static struct mutex brightness_mutex
;
5545 * ThinkPads can read brightness from two places: EC 0x31, or
5546 * CMOS NVRAM byte 0x5E, bits 0-3.
5548 * EC 0x31 has the following layout
5549 * Bit 7: unknown function
5550 * Bit 6: unknown function
5551 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5552 * Bit 4: must be set to zero to avoid problems
5553 * Bit 3-0: backlight brightness level
5555 * brightness_get_raw returns status data in the EC 0x31 layout
5557 static int brightness_get_raw(int *status
)
5559 u8 lec
= 0, lcmos
= 0, level
= 0;
5561 if (brightness_mode
& 1) {
5562 if (!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
))
5564 level
= lec
& TP_EC_BACKLIGHT_LVLMSK
;
5566 if (brightness_mode
& 2) {
5567 lcmos
= (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
)
5568 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
5569 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
5570 lcmos
&= (tp_features
.bright_16levels
)? 0x0f : 0x07;
5574 if (brightness_mode
== 3) {
5575 *status
= lec
; /* Prefer EC, CMOS is just a backing store */
5576 lec
&= TP_EC_BACKLIGHT_LVLMSK
;
5578 tp_warned
.bright_cmos_ec_unsync
= 0;
5580 if (!tp_warned
.bright_cmos_ec_unsync
) {
5582 "CMOS NVRAM (%u) and EC (%u) do not "
5583 "agree on display brightness level\n",
5584 (unsigned int) lcmos
,
5585 (unsigned int) lec
);
5586 tp_warned
.bright_cmos_ec_unsync
= 1;
5597 /* May return EINTR which can always be mapped to ERESTARTSYS */
5598 static int brightness_set(int value
)
5600 int cmos_cmd
, inc
, i
, res
;
5604 if (value
> ((tp_features
.bright_16levels
)? 15 : 7) ||
5608 res
= mutex_lock_killable(&brightness_mutex
);
5612 res
= brightness_get_raw(¤t_value
);
5616 command_bits
= current_value
& TP_EC_BACKLIGHT_CMDMSK
;
5617 current_value
&= TP_EC_BACKLIGHT_LVLMSK
;
5619 cmos_cmd
= value
> current_value
?
5620 TP_CMOS_BRIGHTNESS_UP
:
5621 TP_CMOS_BRIGHTNESS_DOWN
;
5622 inc
= (value
> current_value
)? 1 : -1;
5625 for (i
= current_value
; i
!= value
; i
+= inc
) {
5626 if ((brightness_mode
& 2) &&
5627 issue_thinkpad_cmos_command(cmos_cmd
)) {
5631 if ((brightness_mode
& 1) &&
5632 !acpi_ec_write(TP_EC_BACKLIGHT
,
5633 (i
+ inc
) | command_bits
)) {
5640 mutex_unlock(&brightness_mutex
);
5644 /* sysfs backlight class ----------------------------------------------- */
5646 static int brightness_update_status(struct backlight_device
*bd
)
5648 /* it is the backlight class's job (caller) to handle
5649 * EINTR and other errors properly */
5650 return brightness_set(
5651 (bd
->props
.fb_blank
== FB_BLANK_UNBLANK
&&
5652 bd
->props
.power
== FB_BLANK_UNBLANK
) ?
5653 bd
->props
.brightness
: 0);
5656 static int brightness_get(struct backlight_device
*bd
)
5660 res
= brightness_get_raw(&status
);
5662 return 0; /* FIXME: teach backlight about error handling */
5664 return status
& TP_EC_BACKLIGHT_LVLMSK
;
5667 static struct backlight_ops ibm_backlight_data
= {
5668 .get_brightness
= brightness_get
,
5669 .update_status
= brightness_update_status
,
5672 /* --------------------------------------------------------------------- */
5674 static int __init
brightness_init(struct ibm_init_struct
*iibm
)
5678 vdbg_printk(TPACPI_DBG_INIT
, "initializing brightness subdriver\n");
5680 mutex_init(&brightness_mutex
);
5683 * We always attempt to detect acpi support, so as to switch
5684 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
5685 * going to publish a backlight interface
5687 b
= tpacpi_check_std_acpi_brightness_support();
5690 if (acpi_video_backlight_support()) {
5691 if (brightness_enable
> 1) {
5692 printk(TPACPI_NOTICE
5693 "Standard ACPI backlight interface "
5694 "available, not loading native one.\n");
5696 } else if (brightness_enable
== 1) {
5697 printk(TPACPI_NOTICE
5698 "Backlight control force enabled, even if standard "
5699 "ACPI backlight interface is available\n");
5702 if (brightness_enable
> 1) {
5703 printk(TPACPI_NOTICE
5704 "Standard ACPI backlight interface not "
5705 "available, thinkpad_acpi native "
5706 "brightness control enabled\n");
5711 if (!brightness_enable
) {
5712 dbg_printk(TPACPI_DBG_INIT
,
5713 "brightness support disabled by "
5714 "module parameter\n");
5720 "Unsupported brightness interface, "
5721 "please contact %s\n", TPACPI_MAIL
);
5725 tp_features
.bright_16levels
= 1;
5727 if (!brightness_mode
) {
5728 if (thinkpad_id
.vendor
== PCI_VENDOR_ID_LENOVO
)
5729 brightness_mode
= 2;
5731 brightness_mode
= 3;
5733 dbg_printk(TPACPI_DBG_INIT
, "selected brightness_mode=%d\n",
5737 if (brightness_mode
> 3)
5740 if (brightness_get_raw(&b
) < 0)
5743 if (tp_features
.bright_16levels
)
5745 "detected a 16-level brightness capable ThinkPad\n");
5747 ibm_backlight_device
= backlight_device_register(
5748 TPACPI_BACKLIGHT_DEV_NAME
, NULL
, NULL
,
5749 &ibm_backlight_data
);
5750 if (IS_ERR(ibm_backlight_device
)) {
5751 printk(TPACPI_ERR
"Could not register backlight device\n");
5752 return PTR_ERR(ibm_backlight_device
);
5754 vdbg_printk(TPACPI_DBG_INIT
, "brightness is supported\n");
5756 ibm_backlight_device
->props
.max_brightness
=
5757 (tp_features
.bright_16levels
)? 15 : 7;
5758 ibm_backlight_device
->props
.brightness
= b
& TP_EC_BACKLIGHT_LVLMSK
;
5759 backlight_update_status(ibm_backlight_device
);
5764 static void brightness_exit(void)
5766 if (ibm_backlight_device
) {
5767 vdbg_printk(TPACPI_DBG_EXIT
,
5768 "calling backlight_device_unregister()\n");
5769 backlight_device_unregister(ibm_backlight_device
);
5773 static int brightness_read(char *p
)
5778 level
= brightness_get(NULL
);
5780 len
+= sprintf(p
+ len
, "level:\t\tunreadable\n");
5782 len
+= sprintf(p
+ len
, "level:\t\t%d\n", level
);
5783 len
+= sprintf(p
+ len
, "commands:\tup, down\n");
5784 len
+= sprintf(p
+ len
, "commands:\tlevel <level>"
5785 " (<level> is 0-%d)\n",
5786 (tp_features
.bright_16levels
) ? 15 : 7);
5792 static int brightness_write(char *buf
)
5797 int max_level
= (tp_features
.bright_16levels
) ? 15 : 7;
5799 level
= brightness_get(NULL
);
5803 while ((cmd
= next_cmd(&buf
))) {
5804 if (strlencmp(cmd
, "up") == 0) {
5805 if (level
< max_level
)
5807 } else if (strlencmp(cmd
, "down") == 0) {
5810 } else if (sscanf(cmd
, "level %d", &level
) == 1 &&
5811 level
>= 0 && level
<= max_level
) {
5818 * Now we know what the final level should be, so we try to set it.
5819 * Doing it this way makes the syscall restartable in case of EINTR
5821 rc
= brightness_set(level
);
5822 return (rc
== -EINTR
)? ERESTARTSYS
: rc
;
5825 static struct ibm_struct brightness_driver_data
= {
5826 .name
= "brightness",
5827 .read
= brightness_read
,
5828 .write
= brightness_write
,
5829 .exit
= brightness_exit
,
5832 /*************************************************************************
5836 static int volume_offset
= 0x30;
5838 static int volume_read(char *p
)
5843 if (!acpi_ec_read(volume_offset
, &level
)) {
5844 len
+= sprintf(p
+ len
, "level:\t\tunreadable\n");
5846 len
+= sprintf(p
+ len
, "level:\t\t%d\n", level
& 0xf);
5847 len
+= sprintf(p
+ len
, "mute:\t\t%s\n", onoff(level
, 6));
5848 len
+= sprintf(p
+ len
, "commands:\tup, down, mute\n");
5849 len
+= sprintf(p
+ len
, "commands:\tlevel <level>"
5850 " (<level> is 0-15)\n");
5856 static int volume_write(char *buf
)
5858 int cmos_cmd
, inc
, i
;
5860 int new_level
, new_mute
;
5863 while ((cmd
= next_cmd(&buf
))) {
5864 if (!acpi_ec_read(volume_offset
, &level
))
5866 new_mute
= mute
= level
& 0x40;
5867 new_level
= level
= level
& 0xf;
5869 if (strlencmp(cmd
, "up") == 0) {
5873 new_level
= level
== 15 ? 15 : level
+ 1;
5874 } else if (strlencmp(cmd
, "down") == 0) {
5878 new_level
= level
== 0 ? 0 : level
- 1;
5879 } else if (sscanf(cmd
, "level %d", &new_level
) == 1 &&
5880 new_level
>= 0 && new_level
<= 15) {
5882 } else if (strlencmp(cmd
, "mute") == 0) {
5887 if (new_level
!= level
) {
5888 /* mute doesn't change */
5890 cmos_cmd
= (new_level
> level
) ?
5891 TP_CMOS_VOLUME_UP
: TP_CMOS_VOLUME_DOWN
;
5892 inc
= new_level
> level
? 1 : -1;
5894 if (mute
&& (issue_thinkpad_cmos_command(cmos_cmd
) ||
5895 !acpi_ec_write(volume_offset
, level
)))
5898 for (i
= level
; i
!= new_level
; i
+= inc
)
5899 if (issue_thinkpad_cmos_command(cmos_cmd
) ||
5900 !acpi_ec_write(volume_offset
, i
+ inc
))
5904 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE
) ||
5905 !acpi_ec_write(volume_offset
, new_level
+ mute
))) {
5910 if (new_mute
!= mute
) {
5911 /* level doesn't change */
5913 cmos_cmd
= (new_mute
) ?
5914 TP_CMOS_VOLUME_MUTE
: TP_CMOS_VOLUME_UP
;
5916 if (issue_thinkpad_cmos_command(cmos_cmd
) ||
5917 !acpi_ec_write(volume_offset
, level
+ new_mute
))
5925 static struct ibm_struct volume_driver_data
= {
5927 .read
= volume_read
,
5928 .write
= volume_write
,
5931 /*************************************************************************
5938 * TPACPI_FAN_RD_ACPI_GFAN:
5939 * ACPI GFAN method: returns fan level
5941 * see TPACPI_FAN_WR_ACPI_SFAN
5942 * EC 0x2f (HFSP) not available if GFAN exists
5944 * TPACPI_FAN_WR_ACPI_SFAN:
5945 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
5947 * EC 0x2f (HFSP) might be available *for reading*, but do not use
5950 * TPACPI_FAN_WR_TPEC:
5951 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
5952 * Supported on almost all ThinkPads
5954 * Fan speed changes of any sort (including those caused by the
5955 * disengaged mode) are usually done slowly by the firmware as the
5956 * maximum ammount of fan duty cycle change per second seems to be
5959 * Reading is not available if GFAN exists.
5960 * Writing is not available if SFAN exists.
5963 * 7 automatic mode engaged;
5964 * (default operation mode of the ThinkPad)
5965 * fan level is ignored in this mode.
5966 * 6 full speed mode (takes precedence over bit 7);
5967 * not available on all thinkpads. May disable
5968 * the tachometer while the fan controller ramps up
5969 * the speed (which can take up to a few *minutes*).
5970 * Speeds up fan to 100% duty-cycle, which is far above
5971 * the standard RPM levels. It is not impossible that
5972 * it could cause hardware damage.
5973 * 5-3 unused in some models. Extra bits for fan level
5974 * in others, but still useless as all values above
5975 * 7 map to the same speed as level 7 in these models.
5976 * 2-0 fan level (0..7 usually)
5978 * 0x07 = max (set when temperatures critical)
5979 * Some ThinkPads may have other levels, see
5980 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
5982 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
5983 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
5984 * does so, its initial value is meaningless (0x07).
5986 * For firmware bugs, refer to:
5987 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5991 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
5992 * Main fan tachometer reading (in RPM)
5994 * This register is present on all ThinkPads with a new-style EC, and
5995 * it is known not to be present on the A21m/e, and T22, as there is
5996 * something else in offset 0x84 according to the ACPI DSDT. Other
5997 * ThinkPads from this same time period (and earlier) probably lack the
5998 * tachometer as well.
6000 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
6001 * was never fixed by IBM to report the EC firmware version string
6002 * probably support the tachometer (like the early X models), so
6003 * detecting it is quite hard. We need more data to know for sure.
6005 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
6008 * FIRMWARE BUG: may go stale while the EC is switching to full speed
6011 * For firmware bugs, refer to:
6012 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6014 * TPACPI_FAN_WR_ACPI_FANS:
6015 * ThinkPad X31, X40, X41. Not available in the X60.
6017 * FANS ACPI handle: takes three arguments: low speed, medium speed,
6018 * high speed. ACPI DSDT seems to map these three speeds to levels
6019 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
6020 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
6022 * The speeds are stored on handles
6023 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
6025 * There are three default speed sets, acessible as handles:
6026 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
6028 * ACPI DSDT switches which set is in use depending on various
6031 * TPACPI_FAN_WR_TPEC is also available and should be used to
6032 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
6033 * but the ACPI tables just mention level 7.
6036 enum { /* Fan control constants */
6037 fan_status_offset
= 0x2f, /* EC register 0x2f */
6038 fan_rpm_offset
= 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
6039 * 0x84 must be read before 0x85 */
6041 TP_EC_FAN_FULLSPEED
= 0x40, /* EC fan mode: full speed */
6042 TP_EC_FAN_AUTO
= 0x80, /* EC fan mode: auto fan control */
6044 TPACPI_FAN_LAST_LEVEL
= 0x100, /* Use cached last-seen fan level */
6047 enum fan_status_access_mode
{
6048 TPACPI_FAN_NONE
= 0, /* No fan status or control */
6049 TPACPI_FAN_RD_ACPI_GFAN
, /* Use ACPI GFAN */
6050 TPACPI_FAN_RD_TPEC
, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
6053 enum fan_control_access_mode
{
6054 TPACPI_FAN_WR_NONE
= 0, /* No fan control */
6055 TPACPI_FAN_WR_ACPI_SFAN
, /* Use ACPI SFAN */
6056 TPACPI_FAN_WR_TPEC
, /* Use ACPI EC reg 0x2f */
6057 TPACPI_FAN_WR_ACPI_FANS
, /* Use ACPI FANS and EC reg 0x2f */
6060 enum fan_control_commands
{
6061 TPACPI_FAN_CMD_SPEED
= 0x0001, /* speed command */
6062 TPACPI_FAN_CMD_LEVEL
= 0x0002, /* level command */
6063 TPACPI_FAN_CMD_ENABLE
= 0x0004, /* enable/disable cmd,
6064 * and also watchdog cmd */
6067 static int fan_control_allowed
;
6069 static enum fan_status_access_mode fan_status_access_mode
;
6070 static enum fan_control_access_mode fan_control_access_mode
;
6071 static enum fan_control_commands fan_control_commands
;
6073 static u8 fan_control_initial_status
;
6074 static u8 fan_control_desired_level
;
6075 static u8 fan_control_resume_level
;
6076 static int fan_watchdog_maxinterval
;
6078 static struct mutex fan_mutex
;
6080 static void fan_watchdog_fire(struct work_struct
*ignored
);
6081 static DECLARE_DELAYED_WORK(fan_watchdog_task
, fan_watchdog_fire
);
6083 TPACPI_HANDLE(fans
, ec
, "FANS"); /* X31, X40, X41 */
6084 TPACPI_HANDLE(gfan
, ec
, "GFAN", /* 570 */
6085 "\\FSPD", /* 600e/x, 770e, 770x */
6087 TPACPI_HANDLE(sfan
, ec
, "SFAN", /* 570 */
6088 "JFNS", /* 770x-JL */
6092 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
6093 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
6094 * be in auto mode (0x80).
6096 * This is corrected by any write to HFSP either by the driver, or
6099 * We assume 0x07 really means auto mode while this quirk is active,
6100 * as this is far more likely than the ThinkPad being in level 7,
6101 * which is only used by the firmware during thermal emergencies.
6104 static void fan_quirk1_detect(void)
6106 /* In some ThinkPads, neither the EC nor the ACPI
6107 * DSDT initialize the HFSP register, and it ends up
6108 * being initially set to 0x07 when it *could* be
6109 * either 0x07 or 0x80.
6111 * Enable for TP-1Y (T43), TP-78 (R51e),
6112 * TP-76 (R52), TP-70 (T43, R52), which are known
6114 if (fan_control_initial_status
== 0x07) {
6115 switch (thinkpad_id
.ec_model
) {
6116 case 0x5931: /* TP-1Y */
6117 case 0x3837: /* TP-78 */
6118 case 0x3637: /* TP-76 */
6119 case 0x3037: /* TP-70 */
6120 printk(TPACPI_NOTICE
6121 "fan_init: initial fan status is unknown, "
6122 "assuming it is in auto mode\n");
6123 tp_features
.fan_ctrl_status_undef
= 1;
6129 static void fan_quirk1_handle(u8
*fan_status
)
6131 if (unlikely(tp_features
.fan_ctrl_status_undef
)) {
6132 if (*fan_status
!= fan_control_initial_status
) {
6133 /* something changed the HFSP regisnter since
6134 * driver init time, so it is not undefined
6136 tp_features
.fan_ctrl_status_undef
= 0;
6138 /* Return most likely status. In fact, it
6139 * might be the only possible status */
6140 *fan_status
= TP_EC_FAN_AUTO
;
6146 * Call with fan_mutex held
6148 static void fan_update_desired_level(u8 status
)
6151 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
6153 fan_control_desired_level
= 7;
6155 fan_control_desired_level
= status
;
6159 static int fan_get_status(u8
*status
)
6164 * Add TPACPI_FAN_RD_ACPI_FANS ? */
6166 switch (fan_status_access_mode
) {
6167 case TPACPI_FAN_RD_ACPI_GFAN
:
6168 /* 570, 600e/x, 770e, 770x */
6170 if (unlikely(!acpi_evalf(gfan_handle
, &s
, NULL
, "d")))
6178 case TPACPI_FAN_RD_TPEC
:
6179 /* all except 570, 600e/x, 770e, 770x */
6180 if (unlikely(!acpi_ec_read(fan_status_offset
, &s
)))
6183 if (likely(status
)) {
6185 fan_quirk1_handle(status
);
6197 static int fan_get_status_safe(u8
*status
)
6202 if (mutex_lock_killable(&fan_mutex
))
6203 return -ERESTARTSYS
;
6204 rc
= fan_get_status(&s
);
6206 fan_update_desired_level(s
);
6207 mutex_unlock(&fan_mutex
);
6215 static int fan_get_speed(unsigned int *speed
)
6219 switch (fan_status_access_mode
) {
6220 case TPACPI_FAN_RD_TPEC
:
6221 /* all except 570, 600e/x, 770e, 770x */
6222 if (unlikely(!acpi_ec_read(fan_rpm_offset
, &lo
) ||
6223 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
)))
6227 *speed
= (hi
<< 8) | lo
;
6238 static int fan_set_level(int level
)
6240 if (!fan_control_allowed
)
6243 switch (fan_control_access_mode
) {
6244 case TPACPI_FAN_WR_ACPI_SFAN
:
6245 if (level
>= 0 && level
<= 7) {
6246 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", level
))
6252 case TPACPI_FAN_WR_ACPI_FANS
:
6253 case TPACPI_FAN_WR_TPEC
:
6254 if (!(level
& TP_EC_FAN_AUTO
) &&
6255 !(level
& TP_EC_FAN_FULLSPEED
) &&
6256 ((level
< 0) || (level
> 7)))
6259 /* safety net should the EC not support AUTO
6260 * or FULLSPEED mode bits and just ignore them */
6261 if (level
& TP_EC_FAN_FULLSPEED
)
6262 level
|= 7; /* safety min speed 7 */
6263 else if (level
& TP_EC_FAN_AUTO
)
6264 level
|= 4; /* safety min speed 4 */
6266 if (!acpi_ec_write(fan_status_offset
, level
))
6269 tp_features
.fan_ctrl_status_undef
= 0;
6276 vdbg_printk(TPACPI_DBG_FAN
,
6277 "fan control: set fan control register to 0x%02x\n", level
);
6281 static int fan_set_level_safe(int level
)
6285 if (!fan_control_allowed
)
6288 if (mutex_lock_killable(&fan_mutex
))
6289 return -ERESTARTSYS
;
6291 if (level
== TPACPI_FAN_LAST_LEVEL
)
6292 level
= fan_control_desired_level
;
6294 rc
= fan_set_level(level
);
6296 fan_update_desired_level(level
);
6298 mutex_unlock(&fan_mutex
);
6302 static int fan_set_enable(void)
6307 if (!fan_control_allowed
)
6310 if (mutex_lock_killable(&fan_mutex
))
6311 return -ERESTARTSYS
;
6313 switch (fan_control_access_mode
) {
6314 case TPACPI_FAN_WR_ACPI_FANS
:
6315 case TPACPI_FAN_WR_TPEC
:
6316 rc
= fan_get_status(&s
);
6320 /* Don't go out of emergency fan mode */
6323 s
|= TP_EC_FAN_AUTO
| 4; /* min fan speed 4 */
6326 if (!acpi_ec_write(fan_status_offset
, s
))
6329 tp_features
.fan_ctrl_status_undef
= 0;
6334 case TPACPI_FAN_WR_ACPI_SFAN
:
6335 rc
= fan_get_status(&s
);
6341 /* Set fan to at least level 4 */
6344 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", s
))
6354 mutex_unlock(&fan_mutex
);
6357 vdbg_printk(TPACPI_DBG_FAN
,
6358 "fan control: set fan control register to 0x%02x\n",
6363 static int fan_set_disable(void)
6367 if (!fan_control_allowed
)
6370 if (mutex_lock_killable(&fan_mutex
))
6371 return -ERESTARTSYS
;
6374 switch (fan_control_access_mode
) {
6375 case TPACPI_FAN_WR_ACPI_FANS
:
6376 case TPACPI_FAN_WR_TPEC
:
6377 if (!acpi_ec_write(fan_status_offset
, 0x00))
6380 fan_control_desired_level
= 0;
6381 tp_features
.fan_ctrl_status_undef
= 0;
6385 case TPACPI_FAN_WR_ACPI_SFAN
:
6386 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", 0x00))
6389 fan_control_desired_level
= 0;
6397 vdbg_printk(TPACPI_DBG_FAN
,
6398 "fan control: set fan control register to 0\n");
6400 mutex_unlock(&fan_mutex
);
6404 static int fan_set_speed(int speed
)
6408 if (!fan_control_allowed
)
6411 if (mutex_lock_killable(&fan_mutex
))
6412 return -ERESTARTSYS
;
6415 switch (fan_control_access_mode
) {
6416 case TPACPI_FAN_WR_ACPI_FANS
:
6417 if (speed
>= 0 && speed
<= 65535) {
6418 if (!acpi_evalf(fans_handle
, NULL
, NULL
, "vddd",
6419 speed
, speed
, speed
))
6429 mutex_unlock(&fan_mutex
);
6433 static void fan_watchdog_reset(void)
6435 static int fan_watchdog_active
;
6437 if (fan_control_access_mode
== TPACPI_FAN_WR_NONE
)
6440 if (fan_watchdog_active
)
6441 cancel_delayed_work(&fan_watchdog_task
);
6443 if (fan_watchdog_maxinterval
> 0 &&
6444 tpacpi_lifecycle
!= TPACPI_LIFE_EXITING
) {
6445 fan_watchdog_active
= 1;
6446 if (!queue_delayed_work(tpacpi_wq
, &fan_watchdog_task
,
6447 msecs_to_jiffies(fan_watchdog_maxinterval
6450 "failed to queue the fan watchdog, "
6451 "watchdog will not trigger\n");
6454 fan_watchdog_active
= 0;
6457 static void fan_watchdog_fire(struct work_struct
*ignored
)
6461 if (tpacpi_lifecycle
!= TPACPI_LIFE_RUNNING
)
6464 printk(TPACPI_NOTICE
"fan watchdog: enabling fan\n");
6465 rc
= fan_set_enable();
6467 printk(TPACPI_ERR
"fan watchdog: error %d while enabling fan, "
6468 "will try again later...\n", -rc
);
6469 /* reschedule for later */
6470 fan_watchdog_reset();
6475 * SYSFS fan layout: hwmon compatible (device)
6478 * 0: "disengaged" mode
6480 * 2: native EC "auto" mode (recommended, hardware default)
6482 * pwm*: set speed in manual mode, ignored otherwise.
6483 * 0 is level 0; 255 is level 7. Intermediate points done with linear
6486 * fan*_input: tachometer reading, RPM
6489 * SYSFS fan layout: extensions
6491 * fan_watchdog (driver):
6492 * fan watchdog interval in seconds, 0 disables (default), max 120
6495 /* sysfs fan pwm1_enable ----------------------------------------------- */
6496 static ssize_t
fan_pwm1_enable_show(struct device
*dev
,
6497 struct device_attribute
*attr
,
6503 res
= fan_get_status_safe(&status
);
6507 if (status
& TP_EC_FAN_FULLSPEED
) {
6509 } else if (status
& TP_EC_FAN_AUTO
) {
6514 return snprintf(buf
, PAGE_SIZE
, "%d\n", mode
);
6517 static ssize_t
fan_pwm1_enable_store(struct device
*dev
,
6518 struct device_attribute
*attr
,
6519 const char *buf
, size_t count
)
6524 if (parse_strtoul(buf
, 2, &t
))
6527 tpacpi_disclose_usertask("hwmon pwm1_enable",
6528 "set fan mode to %lu\n", t
);
6532 level
= TP_EC_FAN_FULLSPEED
;
6535 level
= TPACPI_FAN_LAST_LEVEL
;
6538 level
= TP_EC_FAN_AUTO
;
6541 /* reserved for software-controlled auto mode */
6547 res
= fan_set_level_safe(level
);
6553 fan_watchdog_reset();
6558 static struct device_attribute dev_attr_fan_pwm1_enable
=
6559 __ATTR(pwm1_enable
, S_IWUSR
| S_IRUGO
,
6560 fan_pwm1_enable_show
, fan_pwm1_enable_store
);
6562 /* sysfs fan pwm1 ------------------------------------------------------ */
6563 static ssize_t
fan_pwm1_show(struct device
*dev
,
6564 struct device_attribute
*attr
,
6570 res
= fan_get_status_safe(&status
);
6575 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) != 0)
6576 status
= fan_control_desired_level
;
6581 return snprintf(buf
, PAGE_SIZE
, "%u\n", (status
* 255) / 7);
6584 static ssize_t
fan_pwm1_store(struct device
*dev
,
6585 struct device_attribute
*attr
,
6586 const char *buf
, size_t count
)
6590 u8 status
, newlevel
;
6592 if (parse_strtoul(buf
, 255, &s
))
6595 tpacpi_disclose_usertask("hwmon pwm1",
6596 "set fan speed to %lu\n", s
);
6598 /* scale down from 0-255 to 0-7 */
6599 newlevel
= (s
>> 5) & 0x07;
6601 if (mutex_lock_killable(&fan_mutex
))
6602 return -ERESTARTSYS
;
6604 rc
= fan_get_status(&status
);
6605 if (!rc
&& (status
&
6606 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
6607 rc
= fan_set_level(newlevel
);
6611 fan_update_desired_level(newlevel
);
6612 fan_watchdog_reset();
6616 mutex_unlock(&fan_mutex
);
6617 return (rc
)? rc
: count
;
6620 static struct device_attribute dev_attr_fan_pwm1
=
6621 __ATTR(pwm1
, S_IWUSR
| S_IRUGO
,
6622 fan_pwm1_show
, fan_pwm1_store
);
6624 /* sysfs fan fan1_input ------------------------------------------------ */
6625 static ssize_t
fan_fan1_input_show(struct device
*dev
,
6626 struct device_attribute
*attr
,
6632 res
= fan_get_speed(&speed
);
6636 return snprintf(buf
, PAGE_SIZE
, "%u\n", speed
);
6639 static struct device_attribute dev_attr_fan_fan1_input
=
6640 __ATTR(fan1_input
, S_IRUGO
,
6641 fan_fan1_input_show
, NULL
);
6643 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
6644 static ssize_t
fan_fan_watchdog_show(struct device_driver
*drv
,
6647 return snprintf(buf
, PAGE_SIZE
, "%u\n", fan_watchdog_maxinterval
);
6650 static ssize_t
fan_fan_watchdog_store(struct device_driver
*drv
,
6651 const char *buf
, size_t count
)
6655 if (parse_strtoul(buf
, 120, &t
))
6658 if (!fan_control_allowed
)
6661 fan_watchdog_maxinterval
= t
;
6662 fan_watchdog_reset();
6664 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t
);
6669 static DRIVER_ATTR(fan_watchdog
, S_IWUSR
| S_IRUGO
,
6670 fan_fan_watchdog_show
, fan_fan_watchdog_store
);
6672 /* --------------------------------------------------------------------- */
6673 static struct attribute
*fan_attributes
[] = {
6674 &dev_attr_fan_pwm1_enable
.attr
, &dev_attr_fan_pwm1
.attr
,
6675 &dev_attr_fan_fan1_input
.attr
,
6679 static const struct attribute_group fan_attr_group
= {
6680 .attrs
= fan_attributes
,
6683 static int __init
fan_init(struct ibm_init_struct
*iibm
)
6687 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
6688 "initializing fan subdriver\n");
6690 mutex_init(&fan_mutex
);
6691 fan_status_access_mode
= TPACPI_FAN_NONE
;
6692 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
6693 fan_control_commands
= 0;
6694 fan_watchdog_maxinterval
= 0;
6695 tp_features
.fan_ctrl_status_undef
= 0;
6696 fan_control_desired_level
= 7;
6698 TPACPI_ACPIHANDLE_INIT(fans
);
6699 TPACPI_ACPIHANDLE_INIT(gfan
);
6700 TPACPI_ACPIHANDLE_INIT(sfan
);
6703 /* 570, 600e/x, 770e, 770x */
6704 fan_status_access_mode
= TPACPI_FAN_RD_ACPI_GFAN
;
6706 /* all other ThinkPads: note that even old-style
6707 * ThinkPad ECs supports the fan control register */
6708 if (likely(acpi_ec_read(fan_status_offset
,
6709 &fan_control_initial_status
))) {
6710 fan_status_access_mode
= TPACPI_FAN_RD_TPEC
;
6711 fan_quirk1_detect();
6714 "ThinkPad ACPI EC access misbehaving, "
6715 "fan status and control unavailable\n");
6722 fan_control_access_mode
= TPACPI_FAN_WR_ACPI_SFAN
;
6723 fan_control_commands
|=
6724 TPACPI_FAN_CMD_LEVEL
| TPACPI_FAN_CMD_ENABLE
;
6727 /* gfan without sfan means no fan control */
6728 /* all other models implement TP EC 0x2f control */
6732 fan_control_access_mode
=
6733 TPACPI_FAN_WR_ACPI_FANS
;
6734 fan_control_commands
|=
6735 TPACPI_FAN_CMD_SPEED
|
6736 TPACPI_FAN_CMD_LEVEL
|
6737 TPACPI_FAN_CMD_ENABLE
;
6739 fan_control_access_mode
= TPACPI_FAN_WR_TPEC
;
6740 fan_control_commands
|=
6741 TPACPI_FAN_CMD_LEVEL
|
6742 TPACPI_FAN_CMD_ENABLE
;
6747 vdbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
6748 "fan is %s, modes %d, %d\n",
6749 str_supported(fan_status_access_mode
!= TPACPI_FAN_NONE
||
6750 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
),
6751 fan_status_access_mode
, fan_control_access_mode
);
6753 /* fan control master switch */
6754 if (!fan_control_allowed
) {
6755 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
6756 fan_control_commands
= 0;
6757 dbg_printk(TPACPI_DBG_INIT
| TPACPI_DBG_FAN
,
6758 "fan control features disabled by parameter\n");
6761 /* update fan_control_desired_level */
6762 if (fan_status_access_mode
!= TPACPI_FAN_NONE
)
6763 fan_get_status_safe(NULL
);
6765 if (fan_status_access_mode
!= TPACPI_FAN_NONE
||
6766 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
) {
6767 rc
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
6772 rc
= driver_create_file(&tpacpi_hwmon_pdriver
.driver
,
6773 &driver_attr_fan_watchdog
);
6775 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
6784 static void fan_exit(void)
6786 vdbg_printk(TPACPI_DBG_EXIT
| TPACPI_DBG_FAN
,
6787 "cancelling any pending fan watchdog tasks\n");
6789 /* FIXME: can we really do this unconditionally? */
6790 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
, &fan_attr_group
);
6791 driver_remove_file(&tpacpi_hwmon_pdriver
.driver
,
6792 &driver_attr_fan_watchdog
);
6794 cancel_delayed_work(&fan_watchdog_task
);
6795 flush_workqueue(tpacpi_wq
);
6798 static void fan_suspend(pm_message_t state
)
6802 if (!fan_control_allowed
)
6805 /* Store fan status in cache */
6806 fan_control_resume_level
= 0;
6807 rc
= fan_get_status_safe(&fan_control_resume_level
);
6809 printk(TPACPI_NOTICE
6810 "failed to read fan level for later "
6811 "restore during resume: %d\n", rc
);
6813 /* if it is undefined, don't attempt to restore it.
6815 if (tp_features
.fan_ctrl_status_undef
)
6816 fan_control_resume_level
= 0;
6819 static void fan_resume(void)
6821 u8 current_level
= 7;
6822 bool do_set
= false;
6825 /* DSDT *always* updates status on resume */
6826 tp_features
.fan_ctrl_status_undef
= 0;
6828 if (!fan_control_allowed
||
6829 !fan_control_resume_level
||
6830 (fan_get_status_safe(¤t_level
) < 0))
6833 switch (fan_control_access_mode
) {
6834 case TPACPI_FAN_WR_ACPI_SFAN
:
6835 /* never decrease fan level */
6836 do_set
= (fan_control_resume_level
> current_level
);
6838 case TPACPI_FAN_WR_ACPI_FANS
:
6839 case TPACPI_FAN_WR_TPEC
:
6840 /* never decrease fan level, scale is:
6841 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
6843 * We expect the firmware to set either 7 or AUTO, but we
6844 * handle FULLSPEED out of paranoia.
6846 * So, we can safely only restore FULLSPEED or 7, anything
6847 * else could slow the fan. Restoring AUTO is useless, at
6848 * best that's exactly what the DSDT already set (it is the
6851 * Always keep in mind that the DSDT *will* have set the
6852 * fans to what the vendor supposes is the best level. We
6853 * muck with it only to speed the fan up.
6855 if (fan_control_resume_level
!= 7 &&
6856 !(fan_control_resume_level
& TP_EC_FAN_FULLSPEED
))
6859 do_set
= !(current_level
& TP_EC_FAN_FULLSPEED
) &&
6860 (current_level
!= fan_control_resume_level
);
6866 printk(TPACPI_NOTICE
6867 "restoring fan level to 0x%02x\n",
6868 fan_control_resume_level
);
6869 rc
= fan_set_level_safe(fan_control_resume_level
);
6871 printk(TPACPI_NOTICE
6872 "failed to restore fan level: %d\n", rc
);
6876 static int fan_read(char *p
)
6881 unsigned int speed
= 0;
6883 switch (fan_status_access_mode
) {
6884 case TPACPI_FAN_RD_ACPI_GFAN
:
6885 /* 570, 600e/x, 770e, 770x */
6886 rc
= fan_get_status_safe(&status
);
6890 len
+= sprintf(p
+ len
, "status:\t\t%s\n"
6892 (status
!= 0) ? "enabled" : "disabled", status
);
6895 case TPACPI_FAN_RD_TPEC
:
6896 /* all except 570, 600e/x, 770e, 770x */
6897 rc
= fan_get_status_safe(&status
);
6901 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
6902 (status
!= 0) ? "enabled" : "disabled");
6904 rc
= fan_get_speed(&speed
);
6908 len
+= sprintf(p
+ len
, "speed:\t\t%d\n", speed
);
6910 if (status
& TP_EC_FAN_FULLSPEED
)
6911 /* Disengaged mode takes precedence */
6912 len
+= sprintf(p
+ len
, "level:\t\tdisengaged\n");
6913 else if (status
& TP_EC_FAN_AUTO
)
6914 len
+= sprintf(p
+ len
, "level:\t\tauto\n");
6916 len
+= sprintf(p
+ len
, "level:\t\t%d\n", status
);
6919 case TPACPI_FAN_NONE
:
6921 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
6924 if (fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) {
6925 len
+= sprintf(p
+ len
, "commands:\tlevel <level>");
6927 switch (fan_control_access_mode
) {
6928 case TPACPI_FAN_WR_ACPI_SFAN
:
6929 len
+= sprintf(p
+ len
, " (<level> is 0-7)\n");
6933 len
+= sprintf(p
+ len
, " (<level> is 0-7, "
6934 "auto, disengaged, full-speed)\n");
6939 if (fan_control_commands
& TPACPI_FAN_CMD_ENABLE
)
6940 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n"
6941 "commands:\twatchdog <timeout> (<timeout> "
6942 "is 0 (off), 1-120 (seconds))\n");
6944 if (fan_control_commands
& TPACPI_FAN_CMD_SPEED
)
6945 len
+= sprintf(p
+ len
, "commands:\tspeed <speed>"
6946 " (<speed> is 0-65535)\n");
6951 static int fan_write_cmd_level(const char *cmd
, int *rc
)
6955 if (strlencmp(cmd
, "level auto") == 0)
6956 level
= TP_EC_FAN_AUTO
;
6957 else if ((strlencmp(cmd
, "level disengaged") == 0) |
6958 (strlencmp(cmd
, "level full-speed") == 0))
6959 level
= TP_EC_FAN_FULLSPEED
;
6960 else if (sscanf(cmd
, "level %d", &level
) != 1)
6963 *rc
= fan_set_level_safe(level
);
6965 printk(TPACPI_ERR
"level command accepted for unsupported "
6966 "access mode %d", fan_control_access_mode
);
6968 tpacpi_disclose_usertask("procfs fan",
6969 "set level to %d\n", level
);
6974 static int fan_write_cmd_enable(const char *cmd
, int *rc
)
6976 if (strlencmp(cmd
, "enable") != 0)
6979 *rc
= fan_set_enable();
6981 printk(TPACPI_ERR
"enable command accepted for unsupported "
6982 "access mode %d", fan_control_access_mode
);
6984 tpacpi_disclose_usertask("procfs fan", "enable\n");
6989 static int fan_write_cmd_disable(const char *cmd
, int *rc
)
6991 if (strlencmp(cmd
, "disable") != 0)
6994 *rc
= fan_set_disable();
6996 printk(TPACPI_ERR
"disable command accepted for unsupported "
6997 "access mode %d", fan_control_access_mode
);
6999 tpacpi_disclose_usertask("procfs fan", "disable\n");
7004 static int fan_write_cmd_speed(const char *cmd
, int *rc
)
7009 * Support speed <low> <medium> <high> ? */
7011 if (sscanf(cmd
, "speed %d", &speed
) != 1)
7014 *rc
= fan_set_speed(speed
);
7016 printk(TPACPI_ERR
"speed command accepted for unsupported "
7017 "access mode %d", fan_control_access_mode
);
7019 tpacpi_disclose_usertask("procfs fan",
7020 "set speed to %d\n", speed
);
7025 static int fan_write_cmd_watchdog(const char *cmd
, int *rc
)
7029 if (sscanf(cmd
, "watchdog %d", &interval
) != 1)
7032 if (interval
< 0 || interval
> 120)
7035 fan_watchdog_maxinterval
= interval
;
7036 tpacpi_disclose_usertask("procfs fan",
7037 "set watchdog timer to %d\n",
7044 static int fan_write(char *buf
)
7049 while (!rc
&& (cmd
= next_cmd(&buf
))) {
7050 if (!((fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) &&
7051 fan_write_cmd_level(cmd
, &rc
)) &&
7052 !((fan_control_commands
& TPACPI_FAN_CMD_ENABLE
) &&
7053 (fan_write_cmd_enable(cmd
, &rc
) ||
7054 fan_write_cmd_disable(cmd
, &rc
) ||
7055 fan_write_cmd_watchdog(cmd
, &rc
))) &&
7056 !((fan_control_commands
& TPACPI_FAN_CMD_SPEED
) &&
7057 fan_write_cmd_speed(cmd
, &rc
))
7061 fan_watchdog_reset();
7067 static struct ibm_struct fan_driver_data
= {
7072 .suspend
= fan_suspend
,
7073 .resume
= fan_resume
,
7076 /****************************************************************************
7077 ****************************************************************************
7081 ****************************************************************************
7082 ****************************************************************************/
7084 /* sysfs name ---------------------------------------------------------- */
7085 static ssize_t
thinkpad_acpi_pdev_name_show(struct device
*dev
,
7086 struct device_attribute
*attr
,
7089 return snprintf(buf
, PAGE_SIZE
, "%s\n", TPACPI_NAME
);
7092 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name
=
7093 __ATTR(name
, S_IRUGO
, thinkpad_acpi_pdev_name_show
, NULL
);
7095 /* --------------------------------------------------------------------- */
7098 static struct proc_dir_entry
*proc_dir
;
7101 * Module and infrastructure proble, init and exit handling
7104 static int force_load
;
7106 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
7107 static const char * __init
str_supported(int is_supported
)
7109 static char text_unsupported
[] __initdata
= "not supported";
7111 return (is_supported
)? &text_unsupported
[4] : &text_unsupported
[0];
7113 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
7115 static void ibm_exit(struct ibm_struct
*ibm
)
7117 dbg_printk(TPACPI_DBG_EXIT
, "removing %s\n", ibm
->name
);
7119 list_del_init(&ibm
->all_drivers
);
7121 if (ibm
->flags
.acpi_notify_installed
) {
7122 dbg_printk(TPACPI_DBG_EXIT
,
7123 "%s: acpi_remove_notify_handler\n", ibm
->name
);
7125 acpi_remove_notify_handler(*ibm
->acpi
->handle
,
7127 dispatch_acpi_notify
);
7128 ibm
->flags
.acpi_notify_installed
= 0;
7129 ibm
->flags
.acpi_notify_installed
= 0;
7132 if (ibm
->flags
.proc_created
) {
7133 dbg_printk(TPACPI_DBG_EXIT
,
7134 "%s: remove_proc_entry\n", ibm
->name
);
7135 remove_proc_entry(ibm
->name
, proc_dir
);
7136 ibm
->flags
.proc_created
= 0;
7139 if (ibm
->flags
.acpi_driver_registered
) {
7140 dbg_printk(TPACPI_DBG_EXIT
,
7141 "%s: acpi_bus_unregister_driver\n", ibm
->name
);
7143 acpi_bus_unregister_driver(ibm
->acpi
->driver
);
7144 kfree(ibm
->acpi
->driver
);
7145 ibm
->acpi
->driver
= NULL
;
7146 ibm
->flags
.acpi_driver_registered
= 0;
7149 if (ibm
->flags
.init_called
&& ibm
->exit
) {
7151 ibm
->flags
.init_called
= 0;
7154 dbg_printk(TPACPI_DBG_INIT
, "finished removing %s\n", ibm
->name
);
7157 static int __init
ibm_init(struct ibm_init_struct
*iibm
)
7160 struct ibm_struct
*ibm
= iibm
->data
;
7161 struct proc_dir_entry
*entry
;
7163 BUG_ON(ibm
== NULL
);
7165 INIT_LIST_HEAD(&ibm
->all_drivers
);
7167 if (ibm
->flags
.experimental
&& !experimental
)
7170 dbg_printk(TPACPI_DBG_INIT
,
7171 "probing for %s\n", ibm
->name
);
7174 ret
= iibm
->init(iibm
);
7176 return 0; /* probe failed */
7180 ibm
->flags
.init_called
= 1;
7184 if (ibm
->acpi
->hid
) {
7185 ret
= register_tpacpi_subdriver(ibm
);
7190 if (ibm
->acpi
->notify
) {
7191 ret
= setup_acpi_notify(ibm
);
7192 if (ret
== -ENODEV
) {
7193 printk(TPACPI_NOTICE
"disabling subdriver %s\n",
7203 dbg_printk(TPACPI_DBG_INIT
,
7204 "%s installed\n", ibm
->name
);
7207 entry
= create_proc_entry(ibm
->name
,
7208 S_IFREG
| S_IRUGO
| S_IWUSR
,
7211 printk(TPACPI_ERR
"unable to create proc entry %s\n",
7216 entry
->owner
= THIS_MODULE
;
7218 entry
->read_proc
= &dispatch_procfs_read
;
7220 entry
->write_proc
= &dispatch_procfs_write
;
7221 ibm
->flags
.proc_created
= 1;
7224 list_add_tail(&ibm
->all_drivers
, &tpacpi_all_drivers
);
7229 dbg_printk(TPACPI_DBG_INIT
,
7230 "%s: at error exit path with result %d\n",
7234 return (ret
< 0)? ret
: 0;
7239 /* returns 0 - probe ok, or < 0 - probe error.
7240 * Probe ok doesn't mean thinkpad found.
7241 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
7242 static int __must_check __init
get_thinkpad_model_data(
7243 struct thinkpad_id_data
*tp
)
7245 const struct dmi_device
*dev
= NULL
;
7246 char ec_fw_string
[18];
7252 memset(tp
, 0, sizeof(*tp
));
7254 if (dmi_name_in_vendors("IBM"))
7255 tp
->vendor
= PCI_VENDOR_ID_IBM
;
7256 else if (dmi_name_in_vendors("LENOVO"))
7257 tp
->vendor
= PCI_VENDOR_ID_LENOVO
;
7261 s
= dmi_get_system_info(DMI_BIOS_VERSION
);
7262 tp
->bios_version_str
= kstrdup(s
, GFP_KERNEL
);
7263 if (s
&& !tp
->bios_version_str
)
7265 if (!tp
->bios_version_str
)
7267 tp
->bios_model
= tp
->bios_version_str
[0]
7268 | (tp
->bios_version_str
[1] << 8);
7271 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
7272 * X32 or newer, all Z series; Some models must have an
7273 * up-to-date BIOS or they will not be detected.
7275 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7277 while ((dev
= dmi_find_device(DMI_DEV_TYPE_OEM_STRING
, NULL
, dev
))) {
7278 if (sscanf(dev
->name
,
7279 "IBM ThinkPad Embedded Controller -[%17c",
7280 ec_fw_string
) == 1) {
7281 ec_fw_string
[sizeof(ec_fw_string
) - 1] = 0;
7282 ec_fw_string
[strcspn(ec_fw_string
, " ]")] = 0;
7284 tp
->ec_version_str
= kstrdup(ec_fw_string
, GFP_KERNEL
);
7285 if (!tp
->ec_version_str
)
7287 tp
->ec_model
= ec_fw_string
[0]
7288 | (ec_fw_string
[1] << 8);
7293 s
= dmi_get_system_info(DMI_PRODUCT_VERSION
);
7294 if (s
&& !strnicmp(s
, "ThinkPad", 8)) {
7295 tp
->model_str
= kstrdup(s
, GFP_KERNEL
);
7300 s
= dmi_get_system_info(DMI_PRODUCT_NAME
);
7301 tp
->nummodel_str
= kstrdup(s
, GFP_KERNEL
);
7302 if (s
&& !tp
->nummodel_str
)
7308 static int __init
probe_for_thinkpad(void)
7316 * Non-ancient models have better DMI tagging, but very old models
7319 is_thinkpad
= (thinkpad_id
.model_str
!= NULL
);
7321 /* ec is required because many other handles are relative to it */
7322 TPACPI_ACPIHANDLE_INIT(ec
);
7326 "Not yet supported ThinkPad detected!\n");
7331 * Risks a regression on very old machines, but reduces potential
7332 * false positives a damn great deal
7335 is_thinkpad
= (thinkpad_id
.vendor
== PCI_VENDOR_ID_IBM
);
7337 if (!is_thinkpad
&& !force_load
)
7344 /* Module init, exit, parameters */
7346 static struct ibm_init_struct ibms_init
[] __initdata
= {
7348 .init
= thinkpad_acpi_driver_init
,
7349 .data
= &thinkpad_acpi_driver_data
,
7352 .init
= hotkey_init
,
7353 .data
= &hotkey_driver_data
,
7356 .init
= bluetooth_init
,
7357 .data
= &bluetooth_driver_data
,
7361 .data
= &wan_driver_data
,
7365 .data
= &uwb_driver_data
,
7367 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
7370 .data
= &video_driver_data
,
7375 .data
= &light_driver_data
,
7377 #ifdef CONFIG_THINKPAD_ACPI_DOCK
7380 .data
= &dock_driver_data
[0],
7384 .data
= &dock_driver_data
[1],
7387 #ifdef CONFIG_THINKPAD_ACPI_BAY
7390 .data
= &bay_driver_data
,
7395 .data
= &cmos_driver_data
,
7399 .data
= &led_driver_data
,
7403 .data
= &beep_driver_data
,
7406 .init
= thermal_init
,
7407 .data
= &thermal_driver_data
,
7410 .data
= &ecdump_driver_data
,
7413 .init
= brightness_init
,
7414 .data
= &brightness_driver_data
,
7417 .data
= &volume_driver_data
,
7421 .data
= &fan_driver_data
,
7425 static int __init
set_ibm_param(const char *val
, struct kernel_param
*kp
)
7428 struct ibm_struct
*ibm
;
7430 if (!kp
|| !kp
->name
|| !val
)
7433 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
7434 ibm
= ibms_init
[i
].data
;
7435 WARN_ON(ibm
== NULL
);
7437 if (!ibm
|| !ibm
->name
)
7440 if (strcmp(ibm
->name
, kp
->name
) == 0 && ibm
->write
) {
7441 if (strlen(val
) > sizeof(ibms_init
[i
].param
) - 2)
7443 strcpy(ibms_init
[i
].param
, val
);
7444 strcat(ibms_init
[i
].param
, ",");
7452 module_param(experimental
, int, 0);
7453 MODULE_PARM_DESC(experimental
,
7454 "Enables experimental features when non-zero");
7456 module_param_named(debug
, dbg_level
, uint
, 0);
7457 MODULE_PARM_DESC(debug
, "Sets debug level bit-mask");
7459 module_param(force_load
, bool, 0);
7460 MODULE_PARM_DESC(force_load
,
7461 "Attempts to load the driver even on a "
7462 "mis-identified ThinkPad when true");
7464 module_param_named(fan_control
, fan_control_allowed
, bool, 0);
7465 MODULE_PARM_DESC(fan_control
,
7466 "Enables setting fan parameters features when true");
7468 module_param_named(brightness_mode
, brightness_mode
, int, 0);
7469 MODULE_PARM_DESC(brightness_mode
,
7470 "Selects brightness control strategy: "
7471 "0=auto, 1=EC, 2=CMOS, 3=both");
7473 module_param(brightness_enable
, uint
, 0);
7474 MODULE_PARM_DESC(brightness_enable
,
7475 "Enables backlight control when 1, disables when 0");
7477 module_param(hotkey_report_mode
, uint
, 0);
7478 MODULE_PARM_DESC(hotkey_report_mode
,
7479 "used for backwards compatibility with userspace, "
7480 "see documentation");
7482 #define TPACPI_PARAM(feature) \
7483 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
7484 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
7485 "at module load, see documentation")
7487 TPACPI_PARAM(hotkey
);
7488 TPACPI_PARAM(bluetooth
);
7489 TPACPI_PARAM(video
);
7490 TPACPI_PARAM(light
);
7491 #ifdef CONFIG_THINKPAD_ACPI_DOCK
7494 #ifdef CONFIG_THINKPAD_ACPI_BAY
7496 #endif /* CONFIG_THINKPAD_ACPI_BAY */
7500 TPACPI_PARAM(ecdump
);
7501 TPACPI_PARAM(brightness
);
7502 TPACPI_PARAM(volume
);
7505 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
7506 module_param(dbg_wlswemul
, uint
, 0);
7507 MODULE_PARM_DESC(dbg_wlswemul
, "Enables WLSW emulation");
7508 module_param_named(wlsw_state
, tpacpi_wlsw_emulstate
, bool, 0);
7509 MODULE_PARM_DESC(wlsw_state
,
7510 "Initial state of the emulated WLSW switch");
7512 module_param(dbg_bluetoothemul
, uint
, 0);
7513 MODULE_PARM_DESC(dbg_bluetoothemul
, "Enables bluetooth switch emulation");
7514 module_param_named(bluetooth_state
, tpacpi_bluetooth_emulstate
, bool, 0);
7515 MODULE_PARM_DESC(bluetooth_state
,
7516 "Initial state of the emulated bluetooth switch");
7518 module_param(dbg_wwanemul
, uint
, 0);
7519 MODULE_PARM_DESC(dbg_wwanemul
, "Enables WWAN switch emulation");
7520 module_param_named(wwan_state
, tpacpi_wwan_emulstate
, bool, 0);
7521 MODULE_PARM_DESC(wwan_state
,
7522 "Initial state of the emulated WWAN switch");
7524 module_param(dbg_uwbemul
, uint
, 0);
7525 MODULE_PARM_DESC(dbg_uwbemul
, "Enables UWB switch emulation");
7526 module_param_named(uwb_state
, tpacpi_uwb_emulstate
, bool, 0);
7527 MODULE_PARM_DESC(uwb_state
,
7528 "Initial state of the emulated UWB switch");
7531 static void thinkpad_acpi_module_exit(void)
7533 struct ibm_struct
*ibm
, *itmp
;
7535 tpacpi_lifecycle
= TPACPI_LIFE_EXITING
;
7537 list_for_each_entry_safe_reverse(ibm
, itmp
,
7538 &tpacpi_all_drivers
,
7543 dbg_printk(TPACPI_DBG_INIT
, "finished subdriver exit path...\n");
7545 if (tpacpi_inputdev
) {
7546 if (tp_features
.input_device_registered
)
7547 input_unregister_device(tpacpi_inputdev
);
7549 input_free_device(tpacpi_inputdev
);
7553 hwmon_device_unregister(tpacpi_hwmon
);
7555 if (tp_features
.sensors_pdev_attrs_registered
)
7556 device_remove_file(&tpacpi_sensors_pdev
->dev
,
7557 &dev_attr_thinkpad_acpi_pdev_name
);
7558 if (tpacpi_sensors_pdev
)
7559 platform_device_unregister(tpacpi_sensors_pdev
);
7561 platform_device_unregister(tpacpi_pdev
);
7563 if (tp_features
.sensors_pdrv_attrs_registered
)
7564 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver
.driver
);
7565 if (tp_features
.platform_drv_attrs_registered
)
7566 tpacpi_remove_driver_attributes(&tpacpi_pdriver
.driver
);
7568 if (tp_features
.sensors_pdrv_registered
)
7569 platform_driver_unregister(&tpacpi_hwmon_pdriver
);
7571 if (tp_features
.platform_drv_registered
)
7572 platform_driver_unregister(&tpacpi_pdriver
);
7575 remove_proc_entry(TPACPI_PROC_DIR
, acpi_root_dir
);
7578 destroy_workqueue(tpacpi_wq
);
7580 kfree(thinkpad_id
.bios_version_str
);
7581 kfree(thinkpad_id
.ec_version_str
);
7582 kfree(thinkpad_id
.model_str
);
7586 static int __init
thinkpad_acpi_module_init(void)
7590 tpacpi_lifecycle
= TPACPI_LIFE_INIT
;
7592 /* Parameter checking */
7593 if (hotkey_report_mode
> 2)
7596 /* Driver-level probe */
7598 ret
= get_thinkpad_model_data(&thinkpad_id
);
7601 "unable to get DMI data: %d\n", ret
);
7602 thinkpad_acpi_module_exit();
7605 ret
= probe_for_thinkpad();
7607 thinkpad_acpi_module_exit();
7611 /* Driver initialization */
7613 TPACPI_ACPIHANDLE_INIT(ecrd
);
7614 TPACPI_ACPIHANDLE_INIT(ecwr
);
7616 tpacpi_wq
= create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME
);
7618 thinkpad_acpi_module_exit();
7622 proc_dir
= proc_mkdir(TPACPI_PROC_DIR
, acpi_root_dir
);
7625 "unable to create proc dir " TPACPI_PROC_DIR
);
7626 thinkpad_acpi_module_exit();
7629 proc_dir
->owner
= THIS_MODULE
;
7631 ret
= platform_driver_register(&tpacpi_pdriver
);
7634 "unable to register main platform driver\n");
7635 thinkpad_acpi_module_exit();
7638 tp_features
.platform_drv_registered
= 1;
7640 ret
= platform_driver_register(&tpacpi_hwmon_pdriver
);
7643 "unable to register hwmon platform driver\n");
7644 thinkpad_acpi_module_exit();
7647 tp_features
.sensors_pdrv_registered
= 1;
7649 ret
= tpacpi_create_driver_attributes(&tpacpi_pdriver
.driver
);
7651 tp_features
.platform_drv_attrs_registered
= 1;
7652 ret
= tpacpi_create_driver_attributes(
7653 &tpacpi_hwmon_pdriver
.driver
);
7657 "unable to create sysfs driver attributes\n");
7658 thinkpad_acpi_module_exit();
7661 tp_features
.sensors_pdrv_attrs_registered
= 1;
7664 /* Device initialization */
7665 tpacpi_pdev
= platform_device_register_simple(TPACPI_DRVR_NAME
, -1,
7667 if (IS_ERR(tpacpi_pdev
)) {
7668 ret
= PTR_ERR(tpacpi_pdev
);
7670 printk(TPACPI_ERR
"unable to register platform device\n");
7671 thinkpad_acpi_module_exit();
7674 tpacpi_sensors_pdev
= platform_device_register_simple(
7675 TPACPI_HWMON_DRVR_NAME
,
7677 if (IS_ERR(tpacpi_sensors_pdev
)) {
7678 ret
= PTR_ERR(tpacpi_sensors_pdev
);
7679 tpacpi_sensors_pdev
= NULL
;
7681 "unable to register hwmon platform device\n");
7682 thinkpad_acpi_module_exit();
7685 ret
= device_create_file(&tpacpi_sensors_pdev
->dev
,
7686 &dev_attr_thinkpad_acpi_pdev_name
);
7689 "unable to create sysfs hwmon device attributes\n");
7690 thinkpad_acpi_module_exit();
7693 tp_features
.sensors_pdev_attrs_registered
= 1;
7694 tpacpi_hwmon
= hwmon_device_register(&tpacpi_sensors_pdev
->dev
);
7695 if (IS_ERR(tpacpi_hwmon
)) {
7696 ret
= PTR_ERR(tpacpi_hwmon
);
7697 tpacpi_hwmon
= NULL
;
7698 printk(TPACPI_ERR
"unable to register hwmon device\n");
7699 thinkpad_acpi_module_exit();
7702 mutex_init(&tpacpi_inputdev_send_mutex
);
7703 tpacpi_inputdev
= input_allocate_device();
7704 if (!tpacpi_inputdev
) {
7705 printk(TPACPI_ERR
"unable to allocate input device\n");
7706 thinkpad_acpi_module_exit();
7709 /* Prepare input device, but don't register */
7710 tpacpi_inputdev
->name
= "ThinkPad Extra Buttons";
7711 tpacpi_inputdev
->phys
= TPACPI_DRVR_NAME
"/input0";
7712 tpacpi_inputdev
->id
.bustype
= BUS_HOST
;
7713 tpacpi_inputdev
->id
.vendor
= (thinkpad_id
.vendor
) ?
7714 thinkpad_id
.vendor
:
7716 tpacpi_inputdev
->id
.product
= TPACPI_HKEY_INPUT_PRODUCT
;
7717 tpacpi_inputdev
->id
.version
= TPACPI_HKEY_INPUT_VERSION
;
7719 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
7720 ret
= ibm_init(&ibms_init
[i
]);
7721 if (ret
>= 0 && *ibms_init
[i
].param
)
7722 ret
= ibms_init
[i
].data
->write(ibms_init
[i
].param
);
7724 thinkpad_acpi_module_exit();
7728 ret
= input_register_device(tpacpi_inputdev
);
7730 printk(TPACPI_ERR
"unable to register input device\n");
7731 thinkpad_acpi_module_exit();
7734 tp_features
.input_device_registered
= 1;
7737 tpacpi_lifecycle
= TPACPI_LIFE_RUNNING
;
7741 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME
);
7744 * DMI matching for module autoloading
7746 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7747 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
7749 * Only models listed in thinkwiki will be supported, so add yours
7750 * if it is not there yet.
7752 #define IBM_BIOS_MODULE_ALIAS(__type) \
7753 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
7755 /* Non-ancient thinkpads */
7756 MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
7757 MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
7759 /* Ancient thinkpad BIOSes have to be identified by
7760 * BIOS type or model number, and there are far less
7761 * BIOS types than model numbers... */
7762 IBM_BIOS_MODULE_ALIAS("I[BDHIMNOTWVYZ]");
7763 IBM_BIOS_MODULE_ALIAS("1[0368A-GIKM-PST]");
7764 IBM_BIOS_MODULE_ALIAS("K[UX-Z]");
7766 MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
7767 MODULE_DESCRIPTION(TPACPI_DESC
);
7768 MODULE_VERSION(TPACPI_VERSION
);
7769 MODULE_LICENSE("GPL");
7771 module_init(thinkpad_acpi_module_init
);
7772 module_exit(thinkpad_acpi_module_exit
);