2 * thinkpad_acpi.c - ThinkPad ACPI Extras
5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
6 * Copyright (C) 2006-2008 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 0x020200
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/kthread.h>
58 #include <linux/freezer.h>
59 #include <linux/delay.h>
61 #include <linux/nvram.h>
62 #include <linux/proc_fs.h>
63 #include <linux/sysfs.h>
64 #include <linux/backlight.h>
66 #include <linux/platform_device.h>
67 #include <linux/hwmon.h>
68 #include <linux/hwmon-sysfs.h>
69 #include <linux/input.h>
70 #include <linux/leds.h>
71 #include <linux/rfkill.h>
72 #include <asm/uaccess.h>
74 #include <linux/dmi.h>
75 #include <linux/jiffies.h>
76 #include <linux/workqueue.h>
78 #include <acpi/acpi_drivers.h>
79 #include <acpi/acnamesp.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_ALERT KERN_ALERT TPACPI_LOG
179 #define TPACPI_CRIT KERN_CRIT TPACPI_LOG
180 #define TPACPI_ERR KERN_ERR TPACPI_LOG
181 #define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
182 #define TPACPI_INFO KERN_INFO TPACPI_LOG
183 #define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
185 #define TPACPI_DBG_ALL 0xffff
186 #define TPACPI_DBG_INIT 0x0001
187 #define TPACPI_DBG_EXIT 0x0002
188 #define dbg_printk(a_dbg_level, format, arg...) \
189 do { if (dbg_level & a_dbg_level) \
190 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
192 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
193 #define vdbg_printk(a_dbg_level, format, arg...) \
194 dbg_printk(a_dbg_level, format, ## arg)
195 static const char *str_supported(int is_supported
);
197 #define vdbg_printk(a_dbg_level, format, arg...)
200 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
201 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
202 #define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
205 /****************************************************************************
206 * Driver-wide structs and misc. variables
211 struct tp_acpi_drv_struct
{
212 const struct acpi_device_id
*hid
;
213 struct acpi_driver
*driver
;
215 void (*notify
) (struct ibm_struct
*, u32
);
218 struct acpi_device
*device
;
224 int (*read
) (char *);
225 int (*write
) (char *);
227 void (*resume
) (void);
228 void (*suspend
) (pm_message_t state
);
229 void (*shutdown
) (void);
231 struct list_head all_drivers
;
233 struct tp_acpi_drv_struct
*acpi
;
236 u8 acpi_driver_registered
:1;
237 u8 acpi_notify_installed
:1;
244 struct ibm_init_struct
{
247 int (*init
) (struct ibm_init_struct
*);
248 struct ibm_struct
*data
;
252 #ifdef CONFIG_THINKPAD_ACPI_BAY
265 u32 bright_16levels
:1;
266 u32 bright_acpimode
:1;
269 u32 fan_ctrl_status_undef
:1;
270 u32 input_device_registered
:1;
271 u32 platform_drv_registered
:1;
272 u32 platform_drv_attrs_registered
:1;
273 u32 sensors_pdrv_registered
:1;
274 u32 sensors_pdrv_attrs_registered
:1;
275 u32 sensors_pdev_attrs_registered
:1;
276 u32 hotkey_poll_active
:1;
280 u16 hotkey_mask_ff
:1;
281 u16 bright_cmos_ec_unsync
:1;
284 struct thinkpad_id_data
{
285 unsigned int vendor
; /* ThinkPad vendor:
286 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
288 char *bios_version_str
; /* Something like 1ZET51WW (1.03z) */
289 char *ec_version_str
; /* Something like 1ZHT51WW-1.04a */
291 u16 bios_model
; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
294 char *model_str
; /* ThinkPad T43 */
295 char *nummodel_str
; /* 9384A9C for a 9384-A9C model */
297 static struct thinkpad_id_data thinkpad_id
;
300 TPACPI_LIFE_INIT
= 0,
305 static int experimental
;
306 static u32 dbg_level
;
308 static struct workqueue_struct
*tpacpi_wq
;
316 /* Special LED class that can defer work */
317 struct tpacpi_led_classdev
{
318 struct led_classdev led_classdev
;
319 struct work_struct work
;
320 enum led_status_t new_state
;
324 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
325 static int dbg_wlswemul
;
326 static int tpacpi_wlsw_emulstate
;
327 static int dbg_bluetoothemul
;
328 static int tpacpi_bluetooth_emulstate
;
329 static int dbg_wwanemul
;
330 static int tpacpi_wwan_emulstate
;
331 static int dbg_uwbemul
;
332 static int tpacpi_uwb_emulstate
;
336 /****************************************************************************
337 ****************************************************************************
339 * ACPI Helpers and device model
341 ****************************************************************************
342 ****************************************************************************/
344 /*************************************************************************
348 static acpi_handle root_handle
;
350 #define TPACPI_HANDLE(object, parent, paths...) \
351 static acpi_handle object##_handle; \
352 static acpi_handle *object##_parent = &parent##_handle; \
353 static char *object##_path; \
354 static char *object##_paths[] = { paths }
356 TPACPI_HANDLE(ec
, root
, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
357 "\\_SB.PCI.ISA.EC", /* 570 */
358 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
359 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
360 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
361 "\\_SB.PCI0.ICH3.EC0", /* R31 */
362 "\\_SB.PCI0.LPC.EC", /* all others */
365 TPACPI_HANDLE(ecrd
, ec
, "ECRD"); /* 570 */
366 TPACPI_HANDLE(ecwr
, ec
, "ECWR"); /* 570 */
368 TPACPI_HANDLE(cmos
, root
, "\\UCMS", /* R50, R50e, R50p, R51, */
370 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
371 "\\CMS", /* R40, R40e */
374 TPACPI_HANDLE(hkey
, ec
, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
375 "^HKEY", /* R30, R31 */
376 "HKEY", /* all others */
379 TPACPI_HANDLE(vid
, root
, "\\_SB.PCI.AGP.VGA", /* 570 */
380 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
381 "\\_SB.PCI0.VID0", /* 770e */
382 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
383 "\\_SB.PCI0.AGP.VID", /* all others */
387 /*************************************************************************
391 static int acpi_evalf(acpi_handle handle
,
392 void *res
, char *method
, char *fmt
, ...)
395 struct acpi_object_list params
;
396 union acpi_object in_objs
[TPACPI_MAX_ACPI_ARGS
];
397 struct acpi_buffer result
, *resultp
;
398 union acpi_object out_obj
;
406 printk(TPACPI_ERR
"acpi_evalf() called with empty format\n");
419 params
.pointer
= &in_objs
[0];
426 in_objs
[params
.count
].integer
.value
= va_arg(ap
, int);
427 in_objs
[params
.count
++].type
= ACPI_TYPE_INTEGER
;
429 /* add more types as needed */
431 printk(TPACPI_ERR
"acpi_evalf() called "
432 "with invalid format character '%c'\n", c
);
438 if (res_type
!= 'v') {
439 result
.length
= sizeof(out_obj
);
440 result
.pointer
= &out_obj
;
445 status
= acpi_evaluate_object(handle
, method
, ¶ms
, resultp
);
450 *(int *)res
= out_obj
.integer
.value
;
451 success
= status
== AE_OK
&& out_obj
.type
== ACPI_TYPE_INTEGER
;
454 success
= status
== AE_OK
;
456 /* add more types as needed */
458 printk(TPACPI_ERR
"acpi_evalf() called "
459 "with invalid format character '%c'\n", res_type
);
463 if (!success
&& !quiet
)
464 printk(TPACPI_ERR
"acpi_evalf(%s, %s, ...) failed: %d\n",
465 method
, fmt0
, status
);
470 static int acpi_ec_read(int i
, u8
*p
)
475 if (!acpi_evalf(ecrd_handle
, &v
, NULL
, "dd", i
))
479 if (ec_read(i
, p
) < 0)
486 static int acpi_ec_write(int i
, u8 v
)
489 if (!acpi_evalf(ecwr_handle
, NULL
, NULL
, "vdd", i
, v
))
492 if (ec_write(i
, v
) < 0)
499 #if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_BAY)
500 static int _sta(acpi_handle handle
)
504 if (!handle
|| !acpi_evalf(handle
, &status
, "_STA", "d"))
511 static int issue_thinkpad_cmos_command(int cmos_cmd
)
516 if (!acpi_evalf(cmos_handle
, NULL
, NULL
, "vd", cmos_cmd
))
522 /*************************************************************************
526 #define TPACPI_ACPIHANDLE_INIT(object) \
527 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
528 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
530 static void drv_acpi_handle_init(char *name
,
531 acpi_handle
*handle
, acpi_handle parent
,
532 char **paths
, int num_paths
, char **path
)
537 vdbg_printk(TPACPI_DBG_INIT
, "trying to locate ACPI handle for %s\n",
540 for (i
= 0; i
< num_paths
; i
++) {
541 status
= acpi_get_handle(parent
, paths
[i
], handle
);
542 if (ACPI_SUCCESS(status
)) {
544 dbg_printk(TPACPI_DBG_INIT
,
545 "Found ACPI handle %s for %s\n",
551 vdbg_printk(TPACPI_DBG_INIT
, "ACPI handle for %s not found\n",
556 static void dispatch_acpi_notify(acpi_handle handle
, u32 event
, void *data
)
558 struct ibm_struct
*ibm
= data
;
560 if (tpacpi_lifecycle
!= TPACPI_LIFE_RUNNING
)
563 if (!ibm
|| !ibm
->acpi
|| !ibm
->acpi
->notify
)
566 ibm
->acpi
->notify(ibm
, event
);
569 static int __init
setup_acpi_notify(struct ibm_struct
*ibm
)
576 if (!*ibm
->acpi
->handle
)
579 vdbg_printk(TPACPI_DBG_INIT
,
580 "setting up ACPI notify for %s\n", ibm
->name
);
582 rc
= acpi_bus_get_device(*ibm
->acpi
->handle
, &ibm
->acpi
->device
);
584 printk(TPACPI_ERR
"acpi_bus_get_device(%s) failed: %d\n",
589 ibm
->acpi
->device
->driver_data
= ibm
;
590 sprintf(acpi_device_class(ibm
->acpi
->device
), "%s/%s",
591 TPACPI_ACPI_EVENT_PREFIX
,
594 status
= acpi_install_notify_handler(*ibm
->acpi
->handle
,
595 ibm
->acpi
->type
, dispatch_acpi_notify
, ibm
);
596 if (ACPI_FAILURE(status
)) {
597 if (status
== AE_ALREADY_EXISTS
) {
599 "another device driver is already "
600 "handling %s events\n", ibm
->name
);
603 "acpi_install_notify_handler(%s) failed: %d\n",
608 ibm
->flags
.acpi_notify_installed
= 1;
612 static int __init
tpacpi_device_add(struct acpi_device
*device
)
617 static int __init
register_tpacpi_subdriver(struct ibm_struct
*ibm
)
621 dbg_printk(TPACPI_DBG_INIT
,
622 "registering %s as an ACPI driver\n", ibm
->name
);
626 ibm
->acpi
->driver
= kzalloc(sizeof(struct acpi_driver
), GFP_KERNEL
);
627 if (!ibm
->acpi
->driver
) {
629 "failed to allocate memory for ibm->acpi->driver\n");
633 sprintf(ibm
->acpi
->driver
->name
, "%s_%s", TPACPI_NAME
, ibm
->name
);
634 ibm
->acpi
->driver
->ids
= ibm
->acpi
->hid
;
636 ibm
->acpi
->driver
->ops
.add
= &tpacpi_device_add
;
638 rc
= acpi_bus_register_driver(ibm
->acpi
->driver
);
640 printk(TPACPI_ERR
"acpi_bus_register_driver(%s) failed: %d\n",
642 kfree(ibm
->acpi
->driver
);
643 ibm
->acpi
->driver
= NULL
;
645 ibm
->flags
.acpi_driver_registered
= 1;
651 /****************************************************************************
652 ****************************************************************************
656 ****************************************************************************
657 ****************************************************************************/
659 static int dispatch_procfs_read(char *page
, char **start
, off_t off
,
660 int count
, int *eof
, void *data
)
662 struct ibm_struct
*ibm
= data
;
665 if (!ibm
|| !ibm
->read
)
668 len
= ibm
->read(page
);
672 if (len
<= off
+ count
)
684 static int dispatch_procfs_write(struct file
*file
,
685 const char __user
*userbuf
,
686 unsigned long count
, void *data
)
688 struct ibm_struct
*ibm
= data
;
692 if (!ibm
|| !ibm
->write
)
695 kernbuf
= kmalloc(count
+ 2, GFP_KERNEL
);
699 if (copy_from_user(kernbuf
, userbuf
, count
)) {
705 strcat(kernbuf
, ",");
706 ret
= ibm
->write(kernbuf
);
715 static char *next_cmd(char **cmds
)
720 while ((end
= strchr(start
, ',')) && end
== start
)
732 /****************************************************************************
733 ****************************************************************************
735 * Device model: input, hwmon and platform
737 ****************************************************************************
738 ****************************************************************************/
740 static struct platform_device
*tpacpi_pdev
;
741 static struct platform_device
*tpacpi_sensors_pdev
;
742 static struct device
*tpacpi_hwmon
;
743 static struct input_dev
*tpacpi_inputdev
;
744 static struct mutex tpacpi_inputdev_send_mutex
;
745 static LIST_HEAD(tpacpi_all_drivers
);
747 static int tpacpi_suspend_handler(struct platform_device
*pdev
,
750 struct ibm_struct
*ibm
, *itmp
;
752 list_for_each_entry_safe(ibm
, itmp
,
756 (ibm
->suspend
)(state
);
762 static int tpacpi_resume_handler(struct platform_device
*pdev
)
764 struct ibm_struct
*ibm
, *itmp
;
766 list_for_each_entry_safe(ibm
, itmp
,
776 static void tpacpi_shutdown_handler(struct platform_device
*pdev
)
778 struct ibm_struct
*ibm
, *itmp
;
780 list_for_each_entry_safe(ibm
, itmp
,
788 static struct platform_driver tpacpi_pdriver
= {
790 .name
= TPACPI_DRVR_NAME
,
791 .owner
= THIS_MODULE
,
793 .suspend
= tpacpi_suspend_handler
,
794 .resume
= tpacpi_resume_handler
,
795 .shutdown
= tpacpi_shutdown_handler
,
798 static struct platform_driver tpacpi_hwmon_pdriver
= {
800 .name
= TPACPI_HWMON_DRVR_NAME
,
801 .owner
= THIS_MODULE
,
805 /*************************************************************************
806 * sysfs support helpers
809 struct attribute_set
{
810 unsigned int members
, max_members
;
811 struct attribute_group group
;
814 struct attribute_set_obj
{
815 struct attribute_set s
;
817 } __attribute__((packed
));
819 static struct attribute_set
*create_attr_set(unsigned int max_members
,
822 struct attribute_set_obj
*sobj
;
824 if (max_members
== 0)
827 /* Allocates space for implicit NULL at the end too */
828 sobj
= kzalloc(sizeof(struct attribute_set_obj
) +
829 max_members
* sizeof(struct attribute
*),
833 sobj
->s
.max_members
= max_members
;
834 sobj
->s
.group
.attrs
= &sobj
->a
;
835 sobj
->s
.group
.name
= name
;
840 #define destroy_attr_set(_set) \
843 /* not multi-threaded safe, use it in a single thread per set */
844 static int add_to_attr_set(struct attribute_set
*s
, struct attribute
*attr
)
849 if (s
->members
>= s
->max_members
)
852 s
->group
.attrs
[s
->members
] = attr
;
858 static int add_many_to_attr_set(struct attribute_set
*s
,
859 struct attribute
**attr
,
864 for (i
= 0; i
< count
; i
++) {
865 res
= add_to_attr_set(s
, attr
[i
]);
873 static void delete_attr_set(struct attribute_set
*s
, struct kobject
*kobj
)
875 sysfs_remove_group(kobj
, &s
->group
);
879 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
880 sysfs_create_group(_kobj, &_attr_set->group)
882 static int parse_strtoul(const char *buf
,
883 unsigned long max
, unsigned long *value
)
887 while (*buf
&& isspace(*buf
))
889 *value
= simple_strtoul(buf
, &endp
, 0);
890 while (*endp
&& isspace(*endp
))
892 if (*endp
|| *value
> max
)
898 static void tpacpi_disable_brightness_delay(void)
900 if (acpi_evalf(hkey_handle
, NULL
, "PWMS", "qvd", 0))
902 "ACPI backlight control delay disabled\n");
905 static int __init
tpacpi_query_bcl_levels(acpi_handle handle
)
907 struct acpi_buffer buffer
= { ACPI_ALLOCATE_BUFFER
, NULL
};
908 union acpi_object
*obj
;
911 if (ACPI_SUCCESS(acpi_evaluate_object(handle
, NULL
, NULL
, &buffer
))) {
912 obj
= (union acpi_object
*)buffer
.pointer
;
913 if (!obj
|| (obj
->type
!= ACPI_TYPE_PACKAGE
)) {
914 printk(TPACPI_ERR
"Unknown _BCL data, "
915 "please report this to %s\n", TPACPI_MAIL
);
918 rc
= obj
->package
.count
;
924 kfree(buffer
.pointer
);
928 static acpi_status __init
tpacpi_acpi_walk_find_bcl(acpi_handle handle
,
929 u32 lvl
, void *context
, void **rv
)
931 char name
[ACPI_PATH_SEGMENT_LENGTH
];
932 struct acpi_buffer buffer
= { sizeof(name
), &name
};
934 if (ACPI_SUCCESS(acpi_get_name(handle
, ACPI_SINGLE_NAME
, &buffer
)) &&
935 !strncmp("_BCL", name
, sizeof(name
) - 1)) {
937 **(int **)rv
= tpacpi_query_bcl_levels(handle
);
938 return AE_CTRL_TERMINATE
;
945 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
947 static int __init
tpacpi_check_std_acpi_brightness_support(void)
951 void *bcl_ptr
= &bcl_levels
;
954 TPACPI_ACPIHANDLE_INIT(vid
);
960 * Search for a _BCL method, and execute it. This is safe on all
961 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
962 * BIOS in ACPI backlight control mode. We do NOT have to care
963 * about calling the _BCL method in an enabled video device, any
964 * will do for our purposes.
967 status
= acpi_walk_namespace(ACPI_TYPE_METHOD
, vid_handle
, 3,
968 tpacpi_acpi_walk_find_bcl
, NULL
,
971 if (ACPI_SUCCESS(status
) && bcl_levels
> 2) {
972 tp_features
.bright_acpimode
= 1;
973 return (bcl_levels
- 2);
979 static int __init
tpacpi_new_rfkill(const unsigned int id
,
981 const enum rfkill_type rfktype
,
983 const bool set_default
,
984 int (*toggle_radio
)(void *, enum rfkill_state
),
985 int (*get_state
)(void *, enum rfkill_state
*))
988 enum rfkill_state initial_state
= RFKILL_STATE_SOFT_BLOCKED
;
990 res
= get_state(NULL
, &initial_state
);
993 "failed to read initial state for %s, error %d; "
994 "will turn radio off\n", name
, res
);
995 } else if (set_default
) {
996 /* try to set the initial state as the default for the rfkill
997 * type, since we ask the firmware to preserve it across S5 in
999 rfkill_set_default(rfktype
,
1000 (initial_state
== RFKILL_STATE_UNBLOCKED
) ?
1001 RFKILL_STATE_UNBLOCKED
:
1002 RFKILL_STATE_SOFT_BLOCKED
);
1005 *rfk
= rfkill_allocate(&tpacpi_pdev
->dev
, rfktype
);
1008 "failed to allocate memory for rfkill class\n");
1012 (*rfk
)->name
= name
;
1013 (*rfk
)->get_state
= get_state
;
1014 (*rfk
)->toggle_radio
= toggle_radio
;
1015 (*rfk
)->state
= initial_state
;
1017 res
= rfkill_register(*rfk
);
1020 "failed to register %s rfkill switch: %d\n",
1030 /*************************************************************************
1031 * thinkpad-acpi driver attributes
1034 /* interface_version --------------------------------------------------- */
1035 static ssize_t
tpacpi_driver_interface_version_show(
1036 struct device_driver
*drv
,
1039 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", TPACPI_SYSFS_VERSION
);
1042 static DRIVER_ATTR(interface_version
, S_IRUGO
,
1043 tpacpi_driver_interface_version_show
, NULL
);
1045 /* debug_level --------------------------------------------------------- */
1046 static ssize_t
tpacpi_driver_debug_show(struct device_driver
*drv
,
1049 return snprintf(buf
, PAGE_SIZE
, "0x%04x\n", dbg_level
);
1052 static ssize_t
tpacpi_driver_debug_store(struct device_driver
*drv
,
1053 const char *buf
, size_t count
)
1057 if (parse_strtoul(buf
, 0xffff, &t
))
1065 static DRIVER_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
1066 tpacpi_driver_debug_show
, tpacpi_driver_debug_store
);
1068 /* version ------------------------------------------------------------- */
1069 static ssize_t
tpacpi_driver_version_show(struct device_driver
*drv
,
1072 return snprintf(buf
, PAGE_SIZE
, "%s v%s\n",
1073 TPACPI_DESC
, TPACPI_VERSION
);
1076 static DRIVER_ATTR(version
, S_IRUGO
,
1077 tpacpi_driver_version_show
, NULL
);
1079 /* --------------------------------------------------------------------- */
1081 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1083 static void tpacpi_send_radiosw_update(void);
1085 /* wlsw_emulstate ------------------------------------------------------ */
1086 static ssize_t
tpacpi_driver_wlsw_emulstate_show(struct device_driver
*drv
,
1089 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_wlsw_emulstate
);
1092 static ssize_t
tpacpi_driver_wlsw_emulstate_store(struct device_driver
*drv
,
1093 const char *buf
, size_t count
)
1097 if (parse_strtoul(buf
, 1, &t
))
1100 if (tpacpi_wlsw_emulstate
!= t
) {
1101 tpacpi_wlsw_emulstate
= !!t
;
1102 tpacpi_send_radiosw_update();
1104 tpacpi_wlsw_emulstate
= !!t
;
1109 static DRIVER_ATTR(wlsw_emulstate
, S_IWUSR
| S_IRUGO
,
1110 tpacpi_driver_wlsw_emulstate_show
,
1111 tpacpi_driver_wlsw_emulstate_store
);
1113 /* bluetooth_emulstate ------------------------------------------------- */
1114 static ssize_t
tpacpi_driver_bluetooth_emulstate_show(
1115 struct device_driver
*drv
,
1118 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_bluetooth_emulstate
);
1121 static ssize_t
tpacpi_driver_bluetooth_emulstate_store(
1122 struct device_driver
*drv
,
1123 const char *buf
, size_t count
)
1127 if (parse_strtoul(buf
, 1, &t
))
1130 tpacpi_bluetooth_emulstate
= !!t
;
1135 static DRIVER_ATTR(bluetooth_emulstate
, S_IWUSR
| S_IRUGO
,
1136 tpacpi_driver_bluetooth_emulstate_show
,
1137 tpacpi_driver_bluetooth_emulstate_store
);
1139 /* wwan_emulstate ------------------------------------------------- */
1140 static ssize_t
tpacpi_driver_wwan_emulstate_show(
1141 struct device_driver
*drv
,
1144 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_wwan_emulstate
);
1147 static ssize_t
tpacpi_driver_wwan_emulstate_store(
1148 struct device_driver
*drv
,
1149 const char *buf
, size_t count
)
1153 if (parse_strtoul(buf
, 1, &t
))
1156 tpacpi_wwan_emulstate
= !!t
;
1161 static DRIVER_ATTR(wwan_emulstate
, S_IWUSR
| S_IRUGO
,
1162 tpacpi_driver_wwan_emulstate_show
,
1163 tpacpi_driver_wwan_emulstate_store
);
1165 /* uwb_emulstate ------------------------------------------------- */
1166 static ssize_t
tpacpi_driver_uwb_emulstate_show(
1167 struct device_driver
*drv
,
1170 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_uwb_emulstate
);
1173 static ssize_t
tpacpi_driver_uwb_emulstate_store(
1174 struct device_driver
*drv
,
1175 const char *buf
, size_t count
)
1179 if (parse_strtoul(buf
, 1, &t
))
1182 tpacpi_uwb_emulstate
= !!t
;
1187 static DRIVER_ATTR(uwb_emulstate
, S_IWUSR
| S_IRUGO
,
1188 tpacpi_driver_uwb_emulstate_show
,
1189 tpacpi_driver_uwb_emulstate_store
);
1192 /* --------------------------------------------------------------------- */
1194 static struct driver_attribute
*tpacpi_driver_attributes
[] = {
1195 &driver_attr_debug_level
, &driver_attr_version
,
1196 &driver_attr_interface_version
,
1199 static int __init
tpacpi_create_driver_attributes(struct device_driver
*drv
)
1205 while (!res
&& i
< ARRAY_SIZE(tpacpi_driver_attributes
)) {
1206 res
= driver_create_file(drv
, tpacpi_driver_attributes
[i
]);
1210 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1211 if (!res
&& dbg_wlswemul
)
1212 res
= driver_create_file(drv
, &driver_attr_wlsw_emulstate
);
1213 if (!res
&& dbg_bluetoothemul
)
1214 res
= driver_create_file(drv
, &driver_attr_bluetooth_emulstate
);
1215 if (!res
&& dbg_wwanemul
)
1216 res
= driver_create_file(drv
, &driver_attr_wwan_emulstate
);
1217 if (!res
&& dbg_uwbemul
)
1218 res
= driver_create_file(drv
, &driver_attr_uwb_emulstate
);
1224 static void tpacpi_remove_driver_attributes(struct device_driver
*drv
)
1228 for (i
= 0; i
< ARRAY_SIZE(tpacpi_driver_attributes
); i
++)
1229 driver_remove_file(drv
, tpacpi_driver_attributes
[i
]);
1231 #ifdef THINKPAD_ACPI_DEBUGFACILITIES
1232 driver_remove_file(drv
, &driver_attr_wlsw_emulstate
);
1233 driver_remove_file(drv
, &driver_attr_bluetooth_emulstate
);
1234 driver_remove_file(drv
, &driver_attr_wwan_emulstate
);
1235 driver_remove_file(drv
, &driver_attr_uwb_emulstate
);
1239 /****************************************************************************
1240 ****************************************************************************
1244 ****************************************************************************
1245 ****************************************************************************/
1247 /*************************************************************************
1248 * thinkpad-acpi init subdriver
1251 static int __init
thinkpad_acpi_driver_init(struct ibm_init_struct
*iibm
)
1253 printk(TPACPI_INFO
"%s v%s\n", TPACPI_DESC
, TPACPI_VERSION
);
1254 printk(TPACPI_INFO
"%s\n", TPACPI_URL
);
1256 printk(TPACPI_INFO
"ThinkPad BIOS %s, EC %s\n",
1257 (thinkpad_id
.bios_version_str
) ?
1258 thinkpad_id
.bios_version_str
: "unknown",
1259 (thinkpad_id
.ec_version_str
) ?
1260 thinkpad_id
.ec_version_str
: "unknown");
1262 if (thinkpad_id
.vendor
&& thinkpad_id
.model_str
)
1263 printk(TPACPI_INFO
"%s %s, model %s\n",
1264 (thinkpad_id
.vendor
== PCI_VENDOR_ID_IBM
) ?
1265 "IBM" : ((thinkpad_id
.vendor
==
1266 PCI_VENDOR_ID_LENOVO
) ?
1267 "Lenovo" : "Unknown vendor"),
1268 thinkpad_id
.model_str
,
1269 (thinkpad_id
.nummodel_str
) ?
1270 thinkpad_id
.nummodel_str
: "unknown");
1275 static int thinkpad_acpi_driver_read(char *p
)
1279 len
+= sprintf(p
+ len
, "driver:\t\t%s\n", TPACPI_DESC
);
1280 len
+= sprintf(p
+ len
, "version:\t%s\n", TPACPI_VERSION
);
1285 static struct ibm_struct thinkpad_acpi_driver_data
= {
1287 .read
= thinkpad_acpi_driver_read
,
1290 /*************************************************************************
1294 enum { /* hot key scan codes (derived from ACPI DSDT) */
1295 TP_ACPI_HOTKEYSCAN_FNF1
= 0,
1296 TP_ACPI_HOTKEYSCAN_FNF2
,
1297 TP_ACPI_HOTKEYSCAN_FNF3
,
1298 TP_ACPI_HOTKEYSCAN_FNF4
,
1299 TP_ACPI_HOTKEYSCAN_FNF5
,
1300 TP_ACPI_HOTKEYSCAN_FNF6
,
1301 TP_ACPI_HOTKEYSCAN_FNF7
,
1302 TP_ACPI_HOTKEYSCAN_FNF8
,
1303 TP_ACPI_HOTKEYSCAN_FNF9
,
1304 TP_ACPI_HOTKEYSCAN_FNF10
,
1305 TP_ACPI_HOTKEYSCAN_FNF11
,
1306 TP_ACPI_HOTKEYSCAN_FNF12
,
1307 TP_ACPI_HOTKEYSCAN_FNBACKSPACE
,
1308 TP_ACPI_HOTKEYSCAN_FNINSERT
,
1309 TP_ACPI_HOTKEYSCAN_FNDELETE
,
1310 TP_ACPI_HOTKEYSCAN_FNHOME
,
1311 TP_ACPI_HOTKEYSCAN_FNEND
,
1312 TP_ACPI_HOTKEYSCAN_FNPAGEUP
,
1313 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN
,
1314 TP_ACPI_HOTKEYSCAN_FNSPACE
,
1315 TP_ACPI_HOTKEYSCAN_VOLUMEUP
,
1316 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
,
1317 TP_ACPI_HOTKEYSCAN_MUTE
,
1318 TP_ACPI_HOTKEYSCAN_THINKPAD
,
1321 enum { /* Keys available through NVRAM polling */
1322 TPACPI_HKEY_NVRAM_KNOWN_MASK
= 0x00fb88c0U
,
1323 TPACPI_HKEY_NVRAM_GOOD_MASK
= 0x00fb8000U
,
1326 enum { /* Positions of some of the keys in hotkey masks */
1327 TP_ACPI_HKEY_DISPSWTCH_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF7
,
1328 TP_ACPI_HKEY_DISPXPAND_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF8
,
1329 TP_ACPI_HKEY_HIBERNATE_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF12
,
1330 TP_ACPI_HKEY_BRGHTUP_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNHOME
,
1331 TP_ACPI_HKEY_BRGHTDWN_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNEND
,
1332 TP_ACPI_HKEY_THNKLGHT_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP
,
1333 TP_ACPI_HKEY_ZOOM_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNSPACE
,
1334 TP_ACPI_HKEY_VOLUP_MASK
= 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP
,
1335 TP_ACPI_HKEY_VOLDWN_MASK
= 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
,
1336 TP_ACPI_HKEY_MUTE_MASK
= 1 << TP_ACPI_HOTKEYSCAN_MUTE
,
1337 TP_ACPI_HKEY_THINKPAD_MASK
= 1 << TP_ACPI_HOTKEYSCAN_THINKPAD
,
1340 enum { /* NVRAM to ACPI HKEY group map */
1341 TP_NVRAM_HKEY_GROUP_HK2
= TP_ACPI_HKEY_THINKPAD_MASK
|
1342 TP_ACPI_HKEY_ZOOM_MASK
|
1343 TP_ACPI_HKEY_DISPSWTCH_MASK
|
1344 TP_ACPI_HKEY_HIBERNATE_MASK
,
1345 TP_NVRAM_HKEY_GROUP_BRIGHTNESS
= TP_ACPI_HKEY_BRGHTUP_MASK
|
1346 TP_ACPI_HKEY_BRGHTDWN_MASK
,
1347 TP_NVRAM_HKEY_GROUP_VOLUME
= TP_ACPI_HKEY_VOLUP_MASK
|
1348 TP_ACPI_HKEY_VOLDWN_MASK
|
1349 TP_ACPI_HKEY_MUTE_MASK
,
1352 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1353 struct tp_nvram_state
{
1354 u16 thinkpad_toggle
:1;
1356 u16 display_toggle
:1;
1357 u16 thinklight_toggle
:1;
1358 u16 hibernate_toggle
:1;
1359 u16 displayexp_toggle
:1;
1360 u16 display_state
:1;
1361 u16 brightness_toggle
:1;
1362 u16 volume_toggle
:1;
1365 u8 brightness_level
;
1369 static struct task_struct
*tpacpi_hotkey_task
;
1370 static u32 hotkey_source_mask
; /* bit mask 0=ACPI,1=NVRAM */
1371 static int hotkey_poll_freq
= 10; /* Hz */
1372 static struct mutex hotkey_thread_mutex
;
1373 static struct mutex hotkey_thread_data_mutex
;
1374 static unsigned int hotkey_config_change
;
1376 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1378 #define hotkey_source_mask 0U
1380 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1382 static struct mutex hotkey_mutex
;
1384 static enum { /* Reasons for waking up */
1385 TP_ACPI_WAKEUP_NONE
= 0, /* None or unknown */
1386 TP_ACPI_WAKEUP_BAYEJ
, /* Bay ejection request */
1387 TP_ACPI_WAKEUP_UNDOCK
, /* Undock request */
1388 } hotkey_wakeup_reason
;
1390 static int hotkey_autosleep_ack
;
1392 static int hotkey_orig_status
;
1393 static u32 hotkey_orig_mask
;
1394 static u32 hotkey_all_mask
;
1395 static u32 hotkey_reserved_mask
;
1396 static u32 hotkey_mask
;
1398 static unsigned int hotkey_report_mode
;
1400 static u16
*hotkey_keycode_map
;
1402 static struct attribute_set
*hotkey_dev_attributes
;
1404 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1405 #define HOTKEY_CONFIG_CRITICAL_START \
1407 mutex_lock(&hotkey_thread_data_mutex); \
1408 hotkey_config_change++; \
1410 #define HOTKEY_CONFIG_CRITICAL_END \
1411 mutex_unlock(&hotkey_thread_data_mutex);
1413 #define HOTKEY_CONFIG_CRITICAL_START
1414 #define HOTKEY_CONFIG_CRITICAL_END
1415 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1417 /* HKEY.MHKG() return bits */
1418 #define TP_HOTKEY_TABLET_MASK (1 << 3)
1420 static int hotkey_get_wlsw(int *status
)
1422 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1424 *status
= !!tpacpi_wlsw_emulstate
;
1428 if (!acpi_evalf(hkey_handle
, status
, "WLSW", "d"))
1433 static int hotkey_get_tablet_mode(int *status
)
1437 if (!acpi_evalf(hkey_handle
, &s
, "MHKG", "d"))
1440 *status
= ((s
& TP_HOTKEY_TABLET_MASK
) != 0);
1445 * Call with hotkey_mutex held
1447 static int hotkey_mask_get(void)
1451 if (tp_features
.hotkey_mask
) {
1452 if (!acpi_evalf(hkey_handle
, &m
, "DHKN", "d"))
1455 hotkey_mask
= m
| (hotkey_source_mask
& hotkey_mask
);
1461 * Call with hotkey_mutex held
1463 static int hotkey_mask_set(u32 mask
)
1468 if (tp_features
.hotkey_mask
) {
1469 if (!tp_warned
.hotkey_mask_ff
&&
1470 (mask
== 0xffff || mask
== 0xffffff ||
1471 mask
== 0xffffffff)) {
1472 tp_warned
.hotkey_mask_ff
= 1;
1473 printk(TPACPI_NOTICE
1474 "setting the hotkey mask to 0x%08x is likely "
1475 "not the best way to go about it\n", mask
);
1476 printk(TPACPI_NOTICE
1477 "please consider using the driver defaults, "
1478 "and refer to up-to-date thinkpad-acpi "
1482 HOTKEY_CONFIG_CRITICAL_START
1483 for (i
= 0; i
< 32; i
++) {
1485 /* enable in firmware mask only keys not in NVRAM
1486 * mode, but enable the key in the cached hotkey_mask
1487 * regardless of mode, or the key will end up
1488 * disabled by hotkey_mask_get() */
1489 if (!acpi_evalf(hkey_handle
,
1490 NULL
, "MHKM", "vdd", i
+ 1,
1491 !!((mask
& ~hotkey_source_mask
) & m
))) {
1495 hotkey_mask
= (hotkey_mask
& ~m
) | (mask
& m
);
1498 HOTKEY_CONFIG_CRITICAL_END
1500 /* hotkey_mask_get must be called unconditionally below */
1501 if (!hotkey_mask_get() && !rc
&&
1502 (hotkey_mask
& ~hotkey_source_mask
) !=
1503 (mask
& ~hotkey_source_mask
)) {
1504 printk(TPACPI_NOTICE
1505 "requested hot key mask 0x%08x, but "
1506 "firmware forced it to 0x%08x\n",
1510 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1511 HOTKEY_CONFIG_CRITICAL_START
1512 hotkey_mask
= mask
& hotkey_source_mask
;
1513 HOTKEY_CONFIG_CRITICAL_END
1515 if (hotkey_mask
!= mask
) {
1516 printk(TPACPI_NOTICE
1517 "requested hot key mask 0x%08x, "
1518 "forced to 0x%08x (NVRAM poll mask is "
1519 "0x%08x): no firmware mask support\n",
1520 mask
, hotkey_mask
, hotkey_source_mask
);
1525 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1531 static int hotkey_status_get(int *status
)
1533 if (!acpi_evalf(hkey_handle
, status
, "DHKC", "d"))
1539 static int hotkey_status_set(int status
)
1541 if (!acpi_evalf(hkey_handle
, NULL
, "MHKC", "vd", status
))
1547 static void tpacpi_input_send_tabletsw(void)
1551 if (tp_features
.hotkey_tablet
&&
1552 !hotkey_get_tablet_mode(&state
)) {
1553 mutex_lock(&tpacpi_inputdev_send_mutex
);
1555 input_report_switch(tpacpi_inputdev
,
1556 SW_TABLET_MODE
, !!state
);
1557 input_sync(tpacpi_inputdev
);
1559 mutex_unlock(&tpacpi_inputdev_send_mutex
);
1563 static void tpacpi_input_send_key(unsigned int scancode
)
1565 unsigned int keycode
;
1567 keycode
= hotkey_keycode_map
[scancode
];
1569 if (keycode
!= KEY_RESERVED
) {
1570 mutex_lock(&tpacpi_inputdev_send_mutex
);
1572 input_report_key(tpacpi_inputdev
, keycode
, 1);
1573 if (keycode
== KEY_UNKNOWN
)
1574 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
,
1576 input_sync(tpacpi_inputdev
);
1578 input_report_key(tpacpi_inputdev
, keycode
, 0);
1579 if (keycode
== KEY_UNKNOWN
)
1580 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
,
1582 input_sync(tpacpi_inputdev
);
1584 mutex_unlock(&tpacpi_inputdev_send_mutex
);
1588 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1589 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
;
1591 static void tpacpi_hotkey_send_key(unsigned int scancode
)
1593 tpacpi_input_send_key(scancode
);
1594 if (hotkey_report_mode
< 2) {
1595 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver
.device
,
1596 0x80, 0x1001 + scancode
);
1600 static void hotkey_read_nvram(struct tp_nvram_state
*n
, u32 m
)
1604 if (m
& TP_NVRAM_HKEY_GROUP_HK2
) {
1605 d
= nvram_read_byte(TP_NVRAM_ADDR_HK2
);
1606 n
->thinkpad_toggle
= !!(d
& TP_NVRAM_MASK_HKT_THINKPAD
);
1607 n
->zoom_toggle
= !!(d
& TP_NVRAM_MASK_HKT_ZOOM
);
1608 n
->display_toggle
= !!(d
& TP_NVRAM_MASK_HKT_DISPLAY
);
1609 n
->hibernate_toggle
= !!(d
& TP_NVRAM_MASK_HKT_HIBERNATE
);
1611 if (m
& TP_ACPI_HKEY_THNKLGHT_MASK
) {
1612 d
= nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT
);
1613 n
->thinklight_toggle
= !!(d
& TP_NVRAM_MASK_THINKLIGHT
);
1615 if (m
& TP_ACPI_HKEY_DISPXPAND_MASK
) {
1616 d
= nvram_read_byte(TP_NVRAM_ADDR_VIDEO
);
1617 n
->displayexp_toggle
=
1618 !!(d
& TP_NVRAM_MASK_HKT_DISPEXPND
);
1620 if (m
& TP_NVRAM_HKEY_GROUP_BRIGHTNESS
) {
1621 d
= nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
);
1622 n
->brightness_level
= (d
& TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
1623 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
1624 n
->brightness_toggle
=
1625 !!(d
& TP_NVRAM_MASK_HKT_BRIGHTNESS
);
1627 if (m
& TP_NVRAM_HKEY_GROUP_VOLUME
) {
1628 d
= nvram_read_byte(TP_NVRAM_ADDR_MIXER
);
1629 n
->volume_level
= (d
& TP_NVRAM_MASK_LEVEL_VOLUME
)
1630 >> TP_NVRAM_POS_LEVEL_VOLUME
;
1631 n
->mute
= !!(d
& TP_NVRAM_MASK_MUTE
);
1632 n
->volume_toggle
= !!(d
& TP_NVRAM_MASK_HKT_VOLUME
);
1636 #define TPACPI_COMPARE_KEY(__scancode, __member) \
1638 if ((mask & (1 << __scancode)) && \
1639 oldn->__member != newn->__member) \
1640 tpacpi_hotkey_send_key(__scancode); \
1643 #define TPACPI_MAY_SEND_KEY(__scancode) \
1644 do { if (mask & (1 << __scancode)) \
1645 tpacpi_hotkey_send_key(__scancode); } while (0)
1647 static void hotkey_compare_and_issue_event(struct tp_nvram_state
*oldn
,
1648 struct tp_nvram_state
*newn
,
1651 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD
, thinkpad_toggle
);
1652 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE
, zoom_toggle
);
1653 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7
, display_toggle
);
1654 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12
, hibernate_toggle
);
1656 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP
, thinklight_toggle
);
1658 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8
, displayexp_toggle
);
1661 if (oldn
->volume_toggle
!= newn
->volume_toggle
) {
1662 if (oldn
->mute
!= newn
->mute
) {
1663 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE
);
1665 if (oldn
->volume_level
> newn
->volume_level
) {
1666 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
1667 } else if (oldn
->volume_level
< newn
->volume_level
) {
1668 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
1669 } else if (oldn
->mute
== newn
->mute
) {
1670 /* repeated key presses that didn't change state */
1672 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE
);
1673 } else if (newn
->volume_level
!= 0) {
1674 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
1676 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
1681 /* handle brightness */
1682 if (oldn
->brightness_toggle
!= newn
->brightness_toggle
) {
1683 if (oldn
->brightness_level
< newn
->brightness_level
) {
1684 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
1685 } else if (oldn
->brightness_level
> newn
->brightness_level
) {
1686 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
1688 /* repeated key presses that didn't change state */
1689 if (newn
->brightness_level
!= 0) {
1690 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
1692 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
1698 #undef TPACPI_COMPARE_KEY
1699 #undef TPACPI_MAY_SEND_KEY
1701 static int hotkey_kthread(void *data
)
1703 struct tp_nvram_state s
[2];
1705 unsigned int si
, so
;
1707 unsigned int change_detector
, must_reset
;
1709 mutex_lock(&hotkey_thread_mutex
);
1711 if (tpacpi_lifecycle
== TPACPI_LIFE_EXITING
)
1720 /* Initial state for compares */
1721 mutex_lock(&hotkey_thread_data_mutex
);
1722 change_detector
= hotkey_config_change
;
1723 mask
= hotkey_source_mask
& hotkey_mask
;
1724 mutex_unlock(&hotkey_thread_data_mutex
);
1725 hotkey_read_nvram(&s
[so
], mask
);
1727 while (!kthread_should_stop() && hotkey_poll_freq
) {
1729 t
= 1000/hotkey_poll_freq
;
1730 t
= msleep_interruptible(t
);
1731 if (unlikely(kthread_should_stop()))
1733 must_reset
= try_to_freeze();
1734 if (t
> 0 && !must_reset
)
1737 mutex_lock(&hotkey_thread_data_mutex
);
1738 if (must_reset
|| hotkey_config_change
!= change_detector
) {
1739 /* forget old state on thaw or config change */
1742 change_detector
= hotkey_config_change
;
1744 mask
= hotkey_source_mask
& hotkey_mask
;
1745 mutex_unlock(&hotkey_thread_data_mutex
);
1748 hotkey_read_nvram(&s
[si
], mask
);
1749 if (likely(si
!= so
)) {
1750 hotkey_compare_and_issue_event(&s
[so
], &s
[si
],
1760 mutex_unlock(&hotkey_thread_mutex
);
1764 static void hotkey_poll_stop_sync(void)
1766 if (tpacpi_hotkey_task
) {
1767 if (frozen(tpacpi_hotkey_task
) ||
1768 freezing(tpacpi_hotkey_task
))
1769 thaw_process(tpacpi_hotkey_task
);
1771 kthread_stop(tpacpi_hotkey_task
);
1772 tpacpi_hotkey_task
= NULL
;
1773 mutex_lock(&hotkey_thread_mutex
);
1774 /* at this point, the thread did exit */
1775 mutex_unlock(&hotkey_thread_mutex
);
1779 /* call with hotkey_mutex held */
1780 static void hotkey_poll_setup(int may_warn
)
1782 if ((hotkey_source_mask
& hotkey_mask
) != 0 &&
1783 hotkey_poll_freq
> 0 &&
1784 (tpacpi_inputdev
->users
> 0 || hotkey_report_mode
< 2)) {
1785 if (!tpacpi_hotkey_task
) {
1786 tpacpi_hotkey_task
= kthread_run(hotkey_kthread
,
1787 NULL
, TPACPI_NVRAM_KTHREAD_NAME
);
1788 if (IS_ERR(tpacpi_hotkey_task
)) {
1789 tpacpi_hotkey_task
= NULL
;
1791 "could not create kernel thread "
1792 "for hotkey polling\n");
1796 hotkey_poll_stop_sync();
1798 hotkey_source_mask
!= 0 && hotkey_poll_freq
== 0) {
1799 printk(TPACPI_NOTICE
1800 "hot keys 0x%08x require polling, "
1801 "which is currently disabled\n",
1802 hotkey_source_mask
);
1807 static void hotkey_poll_setup_safe(int may_warn
)
1809 mutex_lock(&hotkey_mutex
);
1810 hotkey_poll_setup(may_warn
);
1811 mutex_unlock(&hotkey_mutex
);
1814 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1816 static void hotkey_poll_setup_safe(int __unused
)
1820 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1822 static int hotkey_inputdev_open(struct input_dev
*dev
)
1824 switch (tpacpi_lifecycle
) {
1825 case TPACPI_LIFE_INIT
:
1827 * hotkey_init will call hotkey_poll_setup_safe
1828 * at the appropriate moment
1831 case TPACPI_LIFE_EXITING
:
1833 case TPACPI_LIFE_RUNNING
:
1834 hotkey_poll_setup_safe(0);
1838 /* Should only happen if tpacpi_lifecycle is corrupt */
1843 static void hotkey_inputdev_close(struct input_dev
*dev
)
1845 /* disable hotkey polling when possible */
1846 if (tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
)
1847 hotkey_poll_setup_safe(0);
1850 /* sysfs hotkey enable ------------------------------------------------- */
1851 static ssize_t
hotkey_enable_show(struct device
*dev
,
1852 struct device_attribute
*attr
,
1857 res
= hotkey_status_get(&status
);
1861 return snprintf(buf
, PAGE_SIZE
, "%d\n", status
);
1864 static ssize_t
hotkey_enable_store(struct device
*dev
,
1865 struct device_attribute
*attr
,
1866 const char *buf
, size_t count
)
1871 if (parse_strtoul(buf
, 1, &t
))
1874 res
= hotkey_status_set(t
);
1876 return (res
) ? res
: count
;
1879 static struct device_attribute dev_attr_hotkey_enable
=
1880 __ATTR(hotkey_enable
, S_IWUSR
| S_IRUGO
,
1881 hotkey_enable_show
, hotkey_enable_store
);
1883 /* sysfs hotkey mask --------------------------------------------------- */
1884 static ssize_t
hotkey_mask_show(struct device
*dev
,
1885 struct device_attribute
*attr
,
1890 if (mutex_lock_killable(&hotkey_mutex
))
1891 return -ERESTARTSYS
;
1892 res
= hotkey_mask_get();
1893 mutex_unlock(&hotkey_mutex
);
1896 res
: snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_mask
);
1899 static ssize_t
hotkey_mask_store(struct device
*dev
,
1900 struct device_attribute
*attr
,
1901 const char *buf
, size_t count
)
1906 if (parse_strtoul(buf
, 0xffffffffUL
, &t
))
1909 if (mutex_lock_killable(&hotkey_mutex
))
1910 return -ERESTARTSYS
;
1912 res
= hotkey_mask_set(t
);
1914 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1915 hotkey_poll_setup(1);
1918 mutex_unlock(&hotkey_mutex
);
1920 return (res
) ? res
: count
;
1923 static struct device_attribute dev_attr_hotkey_mask
=
1924 __ATTR(hotkey_mask
, S_IWUSR
| S_IRUGO
,
1925 hotkey_mask_show
, hotkey_mask_store
);
1927 /* sysfs hotkey bios_enabled ------------------------------------------- */
1928 static ssize_t
hotkey_bios_enabled_show(struct device
*dev
,
1929 struct device_attribute
*attr
,
1932 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_orig_status
);
1935 static struct device_attribute dev_attr_hotkey_bios_enabled
=
1936 __ATTR(hotkey_bios_enabled
, S_IRUGO
, hotkey_bios_enabled_show
, NULL
);
1938 /* sysfs hotkey bios_mask ---------------------------------------------- */
1939 static ssize_t
hotkey_bios_mask_show(struct device
*dev
,
1940 struct device_attribute
*attr
,
1943 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_orig_mask
);
1946 static struct device_attribute dev_attr_hotkey_bios_mask
=
1947 __ATTR(hotkey_bios_mask
, S_IRUGO
, hotkey_bios_mask_show
, NULL
);
1949 /* sysfs hotkey all_mask ----------------------------------------------- */
1950 static ssize_t
hotkey_all_mask_show(struct device
*dev
,
1951 struct device_attribute
*attr
,
1954 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
1955 hotkey_all_mask
| hotkey_source_mask
);
1958 static struct device_attribute dev_attr_hotkey_all_mask
=
1959 __ATTR(hotkey_all_mask
, S_IRUGO
, hotkey_all_mask_show
, NULL
);
1961 /* sysfs hotkey recommended_mask --------------------------------------- */
1962 static ssize_t
hotkey_recommended_mask_show(struct device
*dev
,
1963 struct device_attribute
*attr
,
1966 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
1967 (hotkey_all_mask
| hotkey_source_mask
)
1968 & ~hotkey_reserved_mask
);
1971 static struct device_attribute dev_attr_hotkey_recommended_mask
=
1972 __ATTR(hotkey_recommended_mask
, S_IRUGO
,
1973 hotkey_recommended_mask_show
, NULL
);
1975 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1977 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
1978 static ssize_t
hotkey_source_mask_show(struct device
*dev
,
1979 struct device_attribute
*attr
,
1982 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_source_mask
);
1985 static ssize_t
hotkey_source_mask_store(struct device
*dev
,
1986 struct device_attribute
*attr
,
1987 const char *buf
, size_t count
)
1991 if (parse_strtoul(buf
, 0xffffffffUL
, &t
) ||
1992 ((t
& ~TPACPI_HKEY_NVRAM_KNOWN_MASK
) != 0))
1995 if (mutex_lock_killable(&hotkey_mutex
))
1996 return -ERESTARTSYS
;
1998 HOTKEY_CONFIG_CRITICAL_START
1999 hotkey_source_mask
= t
;
2000 HOTKEY_CONFIG_CRITICAL_END
2002 hotkey_poll_setup(1);
2004 mutex_unlock(&hotkey_mutex
);
2009 static struct device_attribute dev_attr_hotkey_source_mask
=
2010 __ATTR(hotkey_source_mask
, S_IWUSR
| S_IRUGO
,
2011 hotkey_source_mask_show
, hotkey_source_mask_store
);
2013 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2014 static ssize_t
hotkey_poll_freq_show(struct device
*dev
,
2015 struct device_attribute
*attr
,
2018 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_poll_freq
);
2021 static ssize_t
hotkey_poll_freq_store(struct device
*dev
,
2022 struct device_attribute
*attr
,
2023 const char *buf
, size_t count
)
2027 if (parse_strtoul(buf
, 25, &t
))
2030 if (mutex_lock_killable(&hotkey_mutex
))
2031 return -ERESTARTSYS
;
2033 hotkey_poll_freq
= t
;
2035 hotkey_poll_setup(1);
2036 mutex_unlock(&hotkey_mutex
);
2041 static struct device_attribute dev_attr_hotkey_poll_freq
=
2042 __ATTR(hotkey_poll_freq
, S_IWUSR
| S_IRUGO
,
2043 hotkey_poll_freq_show
, hotkey_poll_freq_store
);
2045 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2047 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
2048 static ssize_t
hotkey_radio_sw_show(struct device
*dev
,
2049 struct device_attribute
*attr
,
2053 res
= hotkey_get_wlsw(&s
);
2057 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!s
);
2060 static struct device_attribute dev_attr_hotkey_radio_sw
=
2061 __ATTR(hotkey_radio_sw
, S_IRUGO
, hotkey_radio_sw_show
, NULL
);
2063 static void hotkey_radio_sw_notify_change(void)
2065 if (tp_features
.hotkey_wlsw
)
2066 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2070 /* sysfs hotkey tablet mode (pollable) --------------------------------- */
2071 static ssize_t
hotkey_tablet_mode_show(struct device
*dev
,
2072 struct device_attribute
*attr
,
2076 res
= hotkey_get_tablet_mode(&s
);
2080 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!s
);
2083 static struct device_attribute dev_attr_hotkey_tablet_mode
=
2084 __ATTR(hotkey_tablet_mode
, S_IRUGO
, hotkey_tablet_mode_show
, NULL
);
2086 static void hotkey_tablet_mode_notify_change(void)
2088 if (tp_features
.hotkey_tablet
)
2089 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2090 "hotkey_tablet_mode");
2093 /* sysfs hotkey report_mode -------------------------------------------- */
2094 static ssize_t
hotkey_report_mode_show(struct device
*dev
,
2095 struct device_attribute
*attr
,
2098 return snprintf(buf
, PAGE_SIZE
, "%d\n",
2099 (hotkey_report_mode
!= 0) ? hotkey_report_mode
: 1);
2102 static struct device_attribute dev_attr_hotkey_report_mode
=
2103 __ATTR(hotkey_report_mode
, S_IRUGO
, hotkey_report_mode_show
, NULL
);
2105 /* sysfs wakeup reason (pollable) -------------------------------------- */
2106 static ssize_t
hotkey_wakeup_reason_show(struct device
*dev
,
2107 struct device_attribute
*attr
,
2110 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_wakeup_reason
);
2113 static struct device_attribute dev_attr_hotkey_wakeup_reason
=
2114 __ATTR(wakeup_reason
, S_IRUGO
, hotkey_wakeup_reason_show
, NULL
);
2116 static void hotkey_wakeup_reason_notify_change(void)
2118 if (tp_features
.hotkey_mask
)
2119 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2123 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
2124 static ssize_t
hotkey_wakeup_hotunplug_complete_show(struct device
*dev
,
2125 struct device_attribute
*attr
,
2128 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_autosleep_ack
);
2131 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete
=
2132 __ATTR(wakeup_hotunplug_complete
, S_IRUGO
,
2133 hotkey_wakeup_hotunplug_complete_show
, NULL
);
2135 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
2137 if (tp_features
.hotkey_mask
)
2138 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2139 "wakeup_hotunplug_complete");
2142 /* --------------------------------------------------------------------- */
2144 static struct attribute
*hotkey_attributes
[] __initdata
= {
2145 &dev_attr_hotkey_enable
.attr
,
2146 &dev_attr_hotkey_bios_enabled
.attr
,
2147 &dev_attr_hotkey_report_mode
.attr
,
2148 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2149 &dev_attr_hotkey_mask
.attr
,
2150 &dev_attr_hotkey_all_mask
.attr
,
2151 &dev_attr_hotkey_recommended_mask
.attr
,
2152 &dev_attr_hotkey_source_mask
.attr
,
2153 &dev_attr_hotkey_poll_freq
.attr
,
2157 static struct attribute
*hotkey_mask_attributes
[] __initdata
= {
2158 &dev_attr_hotkey_bios_mask
.attr
,
2159 #ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2160 &dev_attr_hotkey_mask
.attr
,
2161 &dev_attr_hotkey_all_mask
.attr
,
2162 &dev_attr_hotkey_recommended_mask
.attr
,
2164 &dev_attr_hotkey_wakeup_reason
.attr
,
2165 &dev_attr_hotkey_wakeup_hotunplug_complete
.attr
,
2168 static void bluetooth_update_rfk(void);
2169 static void wan_update_rfk(void);
2170 static void uwb_update_rfk(void);
2171 static void tpacpi_send_radiosw_update(void)
2175 /* Sync these BEFORE sending any rfkill events */
2176 if (tp_features
.bluetooth
)
2177 bluetooth_update_rfk();
2178 if (tp_features
.wan
)
2180 if (tp_features
.uwb
)
2183 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&wlsw
)) {
2184 mutex_lock(&tpacpi_inputdev_send_mutex
);
2186 input_report_switch(tpacpi_inputdev
,
2187 SW_RFKILL_ALL
, !!wlsw
);
2188 input_sync(tpacpi_inputdev
);
2190 mutex_unlock(&tpacpi_inputdev_send_mutex
);
2192 hotkey_radio_sw_notify_change();
2195 static void hotkey_exit(void)
2197 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2198 hotkey_poll_stop_sync();
2201 if (hotkey_dev_attributes
)
2202 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
2204 kfree(hotkey_keycode_map
);
2206 if (tp_features
.hotkey
) {
2207 dbg_printk(TPACPI_DBG_EXIT
,
2208 "restoring original hot key mask\n");
2209 /* no short-circuit boolean operator below! */
2210 if ((hotkey_mask_set(hotkey_orig_mask
) |
2211 hotkey_status_set(hotkey_orig_status
)) != 0)
2213 "failed to restore hot key mask "
2214 "to BIOS defaults\n");
2218 static int __init
hotkey_init(struct ibm_init_struct
*iibm
)
2220 /* Requirements for changing the default keymaps:
2222 * 1. Many of the keys are mapped to KEY_RESERVED for very
2223 * good reasons. Do not change them unless you have deep
2224 * knowledge on the IBM and Lenovo ThinkPad firmware for
2225 * the various ThinkPad models. The driver behaves
2226 * differently for KEY_RESERVED: such keys have their
2227 * hot key mask *unset* in mask_recommended, and also
2228 * in the initial hot key mask programmed into the
2229 * firmware at driver load time, which means the firm-
2230 * ware may react very differently if you change them to
2233 * 2. You must be subscribed to the linux-thinkpad and
2234 * ibm-acpi-devel mailing lists, and you should read the
2235 * list archives since 2007 if you want to change the
2236 * keymaps. This requirement exists so that you will
2237 * know the past history of problems with the thinkpad-
2238 * acpi driver keymaps, and also that you will be
2239 * listening to any bug reports;
2241 * 3. Do not send thinkpad-acpi specific patches directly to
2242 * for merging, *ever*. Send them to the linux-acpi
2243 * mailinglist for comments. Merging is to be done only
2244 * through acpi-test and the ACPI maintainer.
2246 * If the above is too much to ask, don't change the keymap.
2247 * Ask the thinkpad-acpi maintainer to do it, instead.
2249 static u16 ibm_keycode_map
[] __initdata
= {
2250 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2251 KEY_FN_F1
, KEY_FN_F2
, KEY_COFFEE
, KEY_SLEEP
,
2252 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
2253 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
2255 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
2256 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
2257 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
2258 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
2260 /* brightness: firmware always reacts to them, unless
2261 * X.org did some tricks in the radeon BIOS scratch
2262 * registers of *some* models */
2263 KEY_RESERVED
, /* 0x0F: FN+HOME (brightness up) */
2264 KEY_RESERVED
, /* 0x10: FN+END (brightness down) */
2266 /* Thinklight: firmware always react to it */
2267 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
2269 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
2270 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
2272 /* Volume: firmware always react to it and reprograms
2273 * the built-in *extra* mixer. Never map it to control
2274 * another mixer by default. */
2275 KEY_RESERVED
, /* 0x14: VOLUME UP */
2276 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
2277 KEY_RESERVED
, /* 0x16: MUTE */
2279 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2281 /* (assignments unknown, please report if found) */
2282 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
2283 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
2285 static u16 lenovo_keycode_map
[] __initdata
= {
2286 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2287 KEY_FN_F1
, KEY_COFFEE
, KEY_BATTERY
, KEY_SLEEP
,
2288 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
2289 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
2291 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
2292 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
2293 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
2294 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
2296 /* These either have to go through ACPI video, or
2297 * act like in the IBM ThinkPads, so don't ever
2298 * enable them by default */
2299 KEY_RESERVED
, /* 0x0F: FN+HOME (brightness up) */
2300 KEY_RESERVED
, /* 0x10: FN+END (brightness down) */
2302 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
2304 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
2305 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
2307 /* Volume: z60/z61, T60 (BIOS version?): firmware always
2308 * react to it and reprograms the built-in *extra* mixer.
2309 * Never map it to control another mixer by default.
2311 * T60?, T61, R60?, R61: firmware and EC tries to send
2312 * these over the regular keyboard, so these are no-ops,
2313 * but there are still weird bugs re. MUTE, so do not
2314 * change unless you get test reports from all Lenovo
2315 * models. May cause the BIOS to interfere with the
2318 KEY_RESERVED
, /* 0x14: VOLUME UP */
2319 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
2320 KEY_RESERVED
, /* 0x16: MUTE */
2322 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2324 /* (assignments unknown, please report if found) */
2325 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
2326 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
2329 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
2330 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
2331 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
2337 vdbg_printk(TPACPI_DBG_INIT
, "initializing hotkey subdriver\n");
2339 BUG_ON(!tpacpi_inputdev
);
2340 BUG_ON(tpacpi_inputdev
->open
!= NULL
||
2341 tpacpi_inputdev
->close
!= NULL
);
2343 TPACPI_ACPIHANDLE_INIT(hkey
);
2344 mutex_init(&hotkey_mutex
);
2346 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2347 mutex_init(&hotkey_thread_mutex
);
2348 mutex_init(&hotkey_thread_data_mutex
);
2351 /* hotkey not supported on 570 */
2352 tp_features
.hotkey
= hkey_handle
!= NULL
;
2354 vdbg_printk(TPACPI_DBG_INIT
, "hotkeys are %s\n",
2355 str_supported(tp_features
.hotkey
));
2357 if (!tp_features
.hotkey
)
2360 tpacpi_disable_brightness_delay();
2362 hotkey_dev_attributes
= create_attr_set(13, NULL
);
2363 if (!hotkey_dev_attributes
)
2365 res
= add_many_to_attr_set(hotkey_dev_attributes
,
2367 ARRAY_SIZE(hotkey_attributes
));
2371 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2372 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
2373 for HKEY interface version 0x100 */
2374 if (acpi_evalf(hkey_handle
, &hkeyv
, "MHKV", "qd")) {
2375 if ((hkeyv
>> 8) != 1) {
2376 printk(TPACPI_ERR
"unknown version of the "
2377 "HKEY interface: 0x%x\n", hkeyv
);
2378 printk(TPACPI_ERR
"please report this to %s\n",
2382 * MHKV 0x100 in A31, R40, R40e,
2383 * T4x, X31, and later
2385 tp_features
.hotkey_mask
= 1;
2389 vdbg_printk(TPACPI_DBG_INIT
, "hotkey masks are %s\n",
2390 str_supported(tp_features
.hotkey_mask
));
2392 if (tp_features
.hotkey_mask
) {
2393 if (!acpi_evalf(hkey_handle
, &hotkey_all_mask
,
2396 "missing MHKA handler, "
2397 "please report this to %s\n",
2399 /* FN+F12, FN+F4, FN+F3 */
2400 hotkey_all_mask
= 0x080cU
;
2404 /* hotkey_source_mask *must* be zero for
2405 * the first hotkey_mask_get */
2406 res
= hotkey_status_get(&hotkey_orig_status
);
2410 if (tp_features
.hotkey_mask
) {
2411 res
= hotkey_mask_get();
2415 hotkey_orig_mask
= hotkey_mask
;
2416 res
= add_many_to_attr_set(
2417 hotkey_dev_attributes
,
2418 hotkey_mask_attributes
,
2419 ARRAY_SIZE(hotkey_mask_attributes
));
2424 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2425 if (tp_features
.hotkey_mask
) {
2426 hotkey_source_mask
= TPACPI_HKEY_NVRAM_GOOD_MASK
2429 hotkey_source_mask
= TPACPI_HKEY_NVRAM_GOOD_MASK
;
2432 vdbg_printk(TPACPI_DBG_INIT
,
2433 "hotkey source mask 0x%08x, polling freq %d\n",
2434 hotkey_source_mask
, hotkey_poll_freq
);
2437 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
2439 tp_features
.hotkey_wlsw
= 1;
2441 "radio switch emulation enabled\n");
2444 /* Not all thinkpads have a hardware radio switch */
2445 if (acpi_evalf(hkey_handle
, &status
, "WLSW", "qd")) {
2446 tp_features
.hotkey_wlsw
= 1;
2448 "radio switch found; radios are %s\n",
2449 enabled(status
, 0));
2451 if (tp_features
.hotkey_wlsw
)
2452 res
= add_to_attr_set(hotkey_dev_attributes
,
2453 &dev_attr_hotkey_radio_sw
.attr
);
2455 /* For X41t, X60t, X61t Tablets... */
2456 if (!res
&& acpi_evalf(hkey_handle
, &status
, "MHKG", "qd")) {
2457 tp_features
.hotkey_tablet
= 1;
2459 "possible tablet mode switch found; "
2460 "ThinkPad in %s mode\n",
2461 (status
& TP_HOTKEY_TABLET_MASK
)?
2462 "tablet" : "laptop");
2463 res
= add_to_attr_set(hotkey_dev_attributes
,
2464 &dev_attr_hotkey_tablet_mode
.attr
);
2468 res
= register_attr_set_with_sysfs(
2469 hotkey_dev_attributes
,
2470 &tpacpi_pdev
->dev
.kobj
);
2474 /* Set up key map */
2476 hotkey_keycode_map
= kmalloc(TPACPI_HOTKEY_MAP_SIZE
,
2478 if (!hotkey_keycode_map
) {
2480 "failed to allocate memory for key map\n");
2485 if (thinkpad_id
.vendor
== PCI_VENDOR_ID_LENOVO
) {
2486 dbg_printk(TPACPI_DBG_INIT
,
2487 "using Lenovo default hot key map\n");
2488 memcpy(hotkey_keycode_map
, &lenovo_keycode_map
,
2489 TPACPI_HOTKEY_MAP_SIZE
);
2491 dbg_printk(TPACPI_DBG_INIT
,
2492 "using IBM default hot key map\n");
2493 memcpy(hotkey_keycode_map
, &ibm_keycode_map
,
2494 TPACPI_HOTKEY_MAP_SIZE
);
2497 set_bit(EV_KEY
, tpacpi_inputdev
->evbit
);
2498 set_bit(EV_MSC
, tpacpi_inputdev
->evbit
);
2499 set_bit(MSC_SCAN
, tpacpi_inputdev
->mscbit
);
2500 tpacpi_inputdev
->keycodesize
= TPACPI_HOTKEY_MAP_TYPESIZE
;
2501 tpacpi_inputdev
->keycodemax
= TPACPI_HOTKEY_MAP_LEN
;
2502 tpacpi_inputdev
->keycode
= hotkey_keycode_map
;
2503 for (i
= 0; i
< TPACPI_HOTKEY_MAP_LEN
; i
++) {
2504 if (hotkey_keycode_map
[i
] != KEY_RESERVED
) {
2505 set_bit(hotkey_keycode_map
[i
],
2506 tpacpi_inputdev
->keybit
);
2508 if (i
< sizeof(hotkey_reserved_mask
)*8)
2509 hotkey_reserved_mask
|= 1 << i
;
2513 if (tp_features
.hotkey_wlsw
) {
2514 set_bit(EV_SW
, tpacpi_inputdev
->evbit
);
2515 set_bit(SW_RFKILL_ALL
, tpacpi_inputdev
->swbit
);
2517 if (tp_features
.hotkey_tablet
) {
2518 set_bit(EV_SW
, tpacpi_inputdev
->evbit
);
2519 set_bit(SW_TABLET_MODE
, tpacpi_inputdev
->swbit
);
2522 /* Do not issue duplicate brightness change events to
2524 if (!tp_features
.bright_acpimode
)
2525 /* update bright_acpimode... */
2526 tpacpi_check_std_acpi_brightness_support();
2528 if (tp_features
.bright_acpimode
) {
2530 "This ThinkPad has standard ACPI backlight "
2531 "brightness control, supported by the ACPI "
2533 printk(TPACPI_NOTICE
2534 "Disabling thinkpad-acpi brightness events "
2537 /* The hotkey_reserved_mask change below is not
2538 * necessary while the keys are at KEY_RESERVED in the
2539 * default map, but better safe than sorry, leave it
2540 * here as a marker of what we have to do, especially
2541 * when we finally become able to set this at runtime
2542 * on response to X.org requests */
2543 hotkey_reserved_mask
|=
2544 (1 << TP_ACPI_HOTKEYSCAN_FNHOME
)
2545 | (1 << TP_ACPI_HOTKEYSCAN_FNEND
);
2548 dbg_printk(TPACPI_DBG_INIT
, "enabling hot key handling\n");
2549 res
= hotkey_status_set(1);
2554 res
= hotkey_mask_set(((hotkey_all_mask
| hotkey_source_mask
)
2555 & ~hotkey_reserved_mask
)
2556 | hotkey_orig_mask
);
2557 if (res
< 0 && res
!= -ENXIO
) {
2562 dbg_printk(TPACPI_DBG_INIT
,
2563 "legacy hot key reporting over procfs %s\n",
2564 (hotkey_report_mode
< 2) ?
2565 "enabled" : "disabled");
2567 tpacpi_inputdev
->open
= &hotkey_inputdev_open
;
2568 tpacpi_inputdev
->close
= &hotkey_inputdev_close
;
2570 hotkey_poll_setup_safe(1);
2571 tpacpi_send_radiosw_update();
2572 tpacpi_input_send_tabletsw();
2577 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
2578 hotkey_dev_attributes
= NULL
;
2580 return (res
< 0)? res
: 1;
2583 static bool hotkey_notify_hotkey(const u32 hkey
,
2585 bool *ignore_acpi_ev
)
2587 /* 0x1000-0x1FFF: key presses */
2588 unsigned int scancode
= hkey
& 0xfff;
2589 *send_acpi_ev
= true;
2590 *ignore_acpi_ev
= false;
2592 if (scancode
> 0 && scancode
< 0x21) {
2594 if (!(hotkey_source_mask
& (1 << scancode
))) {
2595 tpacpi_input_send_key(scancode
);
2596 *send_acpi_ev
= false;
2598 *ignore_acpi_ev
= true;
2605 static bool hotkey_notify_wakeup(const u32 hkey
,
2607 bool *ignore_acpi_ev
)
2609 /* 0x2000-0x2FFF: Wakeup reason */
2610 *send_acpi_ev
= true;
2611 *ignore_acpi_ev
= false;
2614 case 0x2304: /* suspend, undock */
2615 case 0x2404: /* hibernation, undock */
2616 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_UNDOCK
;
2617 *ignore_acpi_ev
= true;
2620 case 0x2305: /* suspend, bay eject */
2621 case 0x2405: /* hibernation, bay eject */
2622 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_BAYEJ
;
2623 *ignore_acpi_ev
= true;
2626 case 0x2313: /* Battery on critical low level (S3) */
2627 case 0x2413: /* Battery on critical low level (S4) */
2629 "EMERGENCY WAKEUP: battery almost empty\n");
2630 /* how to auto-heal: */
2631 /* 2313: woke up from S3, go to S4/S5 */
2632 /* 2413: woke up from S4, go to S5 */
2639 if (hotkey_wakeup_reason
!= TP_ACPI_WAKEUP_NONE
) {
2641 "woke up due to a hot-unplug "
2643 hotkey_wakeup_reason_notify_change();
2648 static bool hotkey_notify_usrevent(const u32 hkey
,
2650 bool *ignore_acpi_ev
)
2652 /* 0x5000-0x5FFF: human interface helpers */
2653 *send_acpi_ev
= true;
2654 *ignore_acpi_ev
= false;
2657 case 0x5010: /* Lenovo new BIOS: brightness changed */
2658 case 0x500b: /* X61t: tablet pen inserted into bay */
2659 case 0x500c: /* X61t: tablet pen removed from bay */
2662 case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
2663 case 0x500a: /* X41t-X61t: swivel down (normal mode) */
2664 tpacpi_input_send_tabletsw();
2665 hotkey_tablet_mode_notify_change();
2666 *send_acpi_ev
= false;
2671 /* LID switch events. Do not propagate */
2672 *ignore_acpi_ev
= true;
2680 static bool hotkey_notify_thermal(const u32 hkey
,
2682 bool *ignore_acpi_ev
)
2684 /* 0x6000-0x6FFF: thermal alarms */
2685 *send_acpi_ev
= true;
2686 *ignore_acpi_ev
= false;
2691 "THERMAL ALARM: battery is too hot!\n");
2692 /* recommended action: warn user through gui */
2696 "THERMAL EMERGENCY: battery is extremely hot!\n");
2697 /* recommended action: immediate sleep/hibernate */
2702 "a sensor reports something is too hot!\n");
2703 /* recommended action: warn user through gui, that */
2704 /* some internal component is too hot */
2708 "THERMAL EMERGENCY: "
2709 "a sensor reports something is extremely hot!\n");
2710 /* recommended action: immediate sleep/hibernate */
2714 "EC reports that Thermal Table has changed\n");
2715 /* recommended action: do nothing, we don't have
2716 * Lenovo ATM information */
2720 "THERMAL ALERT: unknown thermal alarm received\n");
2725 static void hotkey_notify(struct ibm_struct
*ibm
, u32 event
)
2729 bool ignore_acpi_ev
;
2732 if (event
!= 0x80) {
2734 "unknown HKEY notification event %d\n", event
);
2735 /* forward it to userspace, maybe it knows how to handle it */
2736 acpi_bus_generate_netlink_event(
2737 ibm
->acpi
->device
->pnp
.device_class
,
2738 dev_name(&ibm
->acpi
->device
->dev
),
2744 if (!acpi_evalf(hkey_handle
, &hkey
, "MHKP", "d")) {
2745 printk(TPACPI_ERR
"failed to retrieve HKEY event\n");
2754 send_acpi_ev
= true;
2755 ignore_acpi_ev
= false;
2757 switch (hkey
>> 12) {
2759 /* 0x1000-0x1FFF: key presses */
2760 known_ev
= hotkey_notify_hotkey(hkey
, &send_acpi_ev
,
2764 /* 0x2000-0x2FFF: Wakeup reason */
2765 known_ev
= hotkey_notify_wakeup(hkey
, &send_acpi_ev
,
2769 /* 0x3000-0x3FFF: bay-related wakeups */
2770 if (hkey
== 0x3003) {
2771 hotkey_autosleep_ack
= 1;
2774 hotkey_wakeup_hotunplug_complete_notify_change();
2781 /* 0x4000-0x4FFF: dock-related wakeups */
2782 if (hkey
== 0x4003) {
2783 hotkey_autosleep_ack
= 1;
2786 hotkey_wakeup_hotunplug_complete_notify_change();
2793 /* 0x5000-0x5FFF: human interface helpers */
2794 known_ev
= hotkey_notify_usrevent(hkey
, &send_acpi_ev
,
2798 /* 0x6000-0x6FFF: thermal alarms */
2799 known_ev
= hotkey_notify_thermal(hkey
, &send_acpi_ev
,
2803 /* 0x7000-0x7FFF: misc */
2804 if (tp_features
.hotkey_wlsw
&& hkey
== 0x7000) {
2805 tpacpi_send_radiosw_update();
2810 /* fallthrough to default */
2815 printk(TPACPI_NOTICE
2816 "unhandled HKEY event 0x%04x\n", hkey
);
2817 printk(TPACPI_NOTICE
2818 "please report the conditions when this "
2819 "event happened to %s\n", TPACPI_MAIL
);
2823 if (!ignore_acpi_ev
&&
2824 (send_acpi_ev
|| hotkey_report_mode
< 2)) {
2825 acpi_bus_generate_proc_event(ibm
->acpi
->device
,
2829 /* netlink events */
2830 if (!ignore_acpi_ev
&& send_acpi_ev
) {
2831 acpi_bus_generate_netlink_event(
2832 ibm
->acpi
->device
->pnp
.device_class
,
2833 dev_name(&ibm
->acpi
->device
->dev
),
2839 static void hotkey_suspend(pm_message_t state
)
2841 /* Do these on suspend, we get the events on early resume! */
2842 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_NONE
;
2843 hotkey_autosleep_ack
= 0;
2846 static void hotkey_resume(void)
2848 tpacpi_disable_brightness_delay();
2850 if (hotkey_mask_get())
2852 "error while trying to read hot key mask "
2854 tpacpi_send_radiosw_update();
2855 hotkey_tablet_mode_notify_change();
2856 hotkey_wakeup_reason_notify_change();
2857 hotkey_wakeup_hotunplug_complete_notify_change();
2858 hotkey_poll_setup_safe(0);
2861 /* procfs -------------------------------------------------------------- */
2862 static int hotkey_read(char *p
)
2867 if (!tp_features
.hotkey
) {
2868 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
2872 if (mutex_lock_killable(&hotkey_mutex
))
2873 return -ERESTARTSYS
;
2874 res
= hotkey_status_get(&status
);
2876 res
= hotkey_mask_get();
2877 mutex_unlock(&hotkey_mutex
);
2881 len
+= sprintf(p
+ len
, "status:\t\t%s\n", enabled(status
, 0));
2882 if (tp_features
.hotkey_mask
) {
2883 len
+= sprintf(p
+ len
, "mask:\t\t0x%08x\n", hotkey_mask
);
2884 len
+= sprintf(p
+ len
,
2885 "commands:\tenable, disable, reset, <mask>\n");
2887 len
+= sprintf(p
+ len
, "mask:\t\tnot supported\n");
2888 len
+= sprintf(p
+ len
, "commands:\tenable, disable, reset\n");
2894 static int hotkey_write(char *buf
)
2900 if (!tp_features
.hotkey
)
2903 if (mutex_lock_killable(&hotkey_mutex
))
2904 return -ERESTARTSYS
;
2910 while ((cmd
= next_cmd(&buf
))) {
2911 if (strlencmp(cmd
, "enable") == 0) {
2913 } else if (strlencmp(cmd
, "disable") == 0) {
2915 } else if (strlencmp(cmd
, "reset") == 0) {
2916 status
= hotkey_orig_status
;
2917 mask
= hotkey_orig_mask
;
2918 } else if (sscanf(cmd
, "0x%x", &mask
) == 1) {
2920 } else if (sscanf(cmd
, "%x", &mask
) == 1) {
2928 res
= hotkey_status_set(status
);
2930 if (!res
&& mask
!= hotkey_mask
)
2931 res
= hotkey_mask_set(mask
);
2934 mutex_unlock(&hotkey_mutex
);
2938 static const struct acpi_device_id ibm_htk_device_ids
[] = {
2939 {TPACPI_ACPI_HKEY_HID
, 0},
2943 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
= {
2944 .hid
= ibm_htk_device_ids
,
2945 .notify
= hotkey_notify
,
2946 .handle
= &hkey_handle
,
2947 .type
= ACPI_DEVICE_NOTIFY
,
2950 static struct ibm_struct hotkey_driver_data
= {
2952 .read
= hotkey_read
,
2953 .write
= hotkey_write
,
2954 .exit
= hotkey_exit
,
2955 .resume
= hotkey_resume
,
2956 .suspend
= hotkey_suspend
,
2957 .acpi
= &ibm_hotkey_acpidriver
,
2960 /*************************************************************************
2961 * Bluetooth subdriver
2965 /* ACPI GBDC/SBDC bits */
2966 TP_ACPI_BLUETOOTH_HWPRESENT
= 0x01, /* Bluetooth hw available */
2967 TP_ACPI_BLUETOOTH_RADIOSSW
= 0x02, /* Bluetooth radio enabled */
2968 TP_ACPI_BLUETOOTH_RESUMECTRL
= 0x04, /* Bluetooth state at resume:
2973 /* ACPI \BLTH commands */
2974 TP_ACPI_BLTH_GET_ULTRAPORT_ID
= 0x00, /* Get Ultraport BT ID */
2975 TP_ACPI_BLTH_GET_PWR_ON_RESUME
= 0x01, /* Get power-on-resume state */
2976 TP_ACPI_BLTH_PWR_ON_ON_RESUME
= 0x02, /* Resume powered on */
2977 TP_ACPI_BLTH_PWR_OFF_ON_RESUME
= 0x03, /* Resume powered off */
2978 TP_ACPI_BLTH_SAVE_STATE
= 0x05, /* Save state for S4/S5 */
2981 static struct rfkill
*tpacpi_bluetooth_rfkill
;
2983 static void bluetooth_suspend(pm_message_t state
)
2985 /* Try to make sure radio will resume powered off */
2986 acpi_evalf(NULL
, NULL
, "\\BLTH", "vd",
2987 TP_ACPI_BLTH_PWR_OFF_ON_RESUME
);
2990 static int bluetooth_get_radiosw(void)
2994 if (!tp_features
.bluetooth
)
2997 /* WLSW overrides bluetooth in firmware/hardware, reflect that */
2998 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
)
2999 return RFKILL_STATE_HARD_BLOCKED
;
3001 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3002 if (dbg_bluetoothemul
)
3003 return (tpacpi_bluetooth_emulstate
) ?
3004 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3007 if (!acpi_evalf(hkey_handle
, &status
, "GBDC", "d"))
3010 return ((status
& TP_ACPI_BLUETOOTH_RADIOSSW
) != 0) ?
3011 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3014 static void bluetooth_update_rfk(void)
3018 if (!tpacpi_bluetooth_rfkill
)
3021 status
= bluetooth_get_radiosw();
3024 rfkill_force_state(tpacpi_bluetooth_rfkill
, status
);
3027 static int bluetooth_set_radiosw(int radio_on
, int update_rfk
)
3031 if (!tp_features
.bluetooth
)
3034 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3035 * reason to risk weird behaviour. */
3036 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
3040 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3041 if (dbg_bluetoothemul
) {
3042 tpacpi_bluetooth_emulstate
= !!radio_on
;
3044 bluetooth_update_rfk();
3049 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
3051 status
= TP_ACPI_BLUETOOTH_RADIOSSW
;
3054 if (!acpi_evalf(hkey_handle
, NULL
, "SBDC", "vd", status
))
3058 bluetooth_update_rfk();
3063 /* sysfs bluetooth enable ---------------------------------------------- */
3064 static ssize_t
bluetooth_enable_show(struct device
*dev
,
3065 struct device_attribute
*attr
,
3070 status
= bluetooth_get_radiosw();
3074 return snprintf(buf
, PAGE_SIZE
, "%d\n",
3075 (status
== RFKILL_STATE_UNBLOCKED
) ? 1 : 0);
3078 static ssize_t
bluetooth_enable_store(struct device
*dev
,
3079 struct device_attribute
*attr
,
3080 const char *buf
, size_t count
)
3085 if (parse_strtoul(buf
, 1, &t
))
3088 res
= bluetooth_set_radiosw(t
, 1);
3090 return (res
) ? res
: count
;
3093 static struct device_attribute dev_attr_bluetooth_enable
=
3094 __ATTR(bluetooth_enable
, S_IWUSR
| S_IRUGO
,
3095 bluetooth_enable_show
, bluetooth_enable_store
);
3097 /* --------------------------------------------------------------------- */
3099 static struct attribute
*bluetooth_attributes
[] = {
3100 &dev_attr_bluetooth_enable
.attr
,
3104 static const struct attribute_group bluetooth_attr_group
= {
3105 .attrs
= bluetooth_attributes
,
3108 static int tpacpi_bluetooth_rfk_get(void *data
, enum rfkill_state
*state
)
3110 int bts
= bluetooth_get_radiosw();
3119 static int tpacpi_bluetooth_rfk_set(void *data
, enum rfkill_state state
)
3121 return bluetooth_set_radiosw((state
== RFKILL_STATE_UNBLOCKED
), 0);
3124 static void bluetooth_shutdown(void)
3126 /* Order firmware to save current state to NVRAM */
3127 if (!acpi_evalf(NULL
, NULL
, "\\BLTH", "vd",
3128 TP_ACPI_BLTH_SAVE_STATE
))
3129 printk(TPACPI_NOTICE
3130 "failed to save bluetooth state to NVRAM\n");
3133 static void bluetooth_exit(void)
3135 bluetooth_shutdown();
3137 if (tpacpi_bluetooth_rfkill
)
3138 rfkill_unregister(tpacpi_bluetooth_rfkill
);
3140 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
3141 &bluetooth_attr_group
);
3144 static int __init
bluetooth_init(struct ibm_init_struct
*iibm
)
3149 vdbg_printk(TPACPI_DBG_INIT
, "initializing bluetooth subdriver\n");
3151 TPACPI_ACPIHANDLE_INIT(hkey
);
3153 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3154 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
3155 tp_features
.bluetooth
= hkey_handle
&&
3156 acpi_evalf(hkey_handle
, &status
, "GBDC", "qd");
3158 vdbg_printk(TPACPI_DBG_INIT
, "bluetooth is %s, status 0x%02x\n",
3159 str_supported(tp_features
.bluetooth
),
3162 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3163 if (dbg_bluetoothemul
) {
3164 tp_features
.bluetooth
= 1;
3166 "bluetooth switch emulation enabled\n");
3169 if (tp_features
.bluetooth
&&
3170 !(status
& TP_ACPI_BLUETOOTH_HWPRESENT
)) {
3171 /* no bluetooth hardware present in system */
3172 tp_features
.bluetooth
= 0;
3173 dbg_printk(TPACPI_DBG_INIT
,
3174 "bluetooth hardware not installed\n");
3177 if (!tp_features
.bluetooth
)
3180 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
3181 &bluetooth_attr_group
);
3185 res
= tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
,
3186 &tpacpi_bluetooth_rfkill
,
3187 RFKILL_TYPE_BLUETOOTH
,
3188 "tpacpi_bluetooth_sw",
3190 tpacpi_bluetooth_rfk_set
,
3191 tpacpi_bluetooth_rfk_get
);
3200 /* procfs -------------------------------------------------------------- */
3201 static int bluetooth_read(char *p
)
3204 int status
= bluetooth_get_radiosw();
3206 if (!tp_features
.bluetooth
)
3207 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
3209 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
3210 (status
== RFKILL_STATE_UNBLOCKED
) ?
3211 "enabled" : "disabled");
3212 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n");
3218 static int bluetooth_write(char *buf
)
3222 if (!tp_features
.bluetooth
)
3225 while ((cmd
= next_cmd(&buf
))) {
3226 if (strlencmp(cmd
, "enable") == 0) {
3227 bluetooth_set_radiosw(1, 1);
3228 } else if (strlencmp(cmd
, "disable") == 0) {
3229 bluetooth_set_radiosw(0, 1);
3237 static struct ibm_struct bluetooth_driver_data
= {
3238 .name
= "bluetooth",
3239 .read
= bluetooth_read
,
3240 .write
= bluetooth_write
,
3241 .exit
= bluetooth_exit
,
3242 .suspend
= bluetooth_suspend
,
3243 .shutdown
= bluetooth_shutdown
,
3246 /*************************************************************************
3251 /* ACPI GWAN/SWAN bits */
3252 TP_ACPI_WANCARD_HWPRESENT
= 0x01, /* Wan hw available */
3253 TP_ACPI_WANCARD_RADIOSSW
= 0x02, /* Wan radio enabled */
3254 TP_ACPI_WANCARD_RESUMECTRL
= 0x04, /* Wan state at resume:
3258 static struct rfkill
*tpacpi_wan_rfkill
;
3260 static void wan_suspend(pm_message_t state
)
3262 /* Try to make sure radio will resume powered off */
3263 acpi_evalf(NULL
, NULL
, "\\WGSV", "qvd",
3264 TP_ACPI_WGSV_PWR_OFF_ON_RESUME
);
3267 static int wan_get_radiosw(void)
3271 if (!tp_features
.wan
)
3274 /* WLSW overrides WWAN in firmware/hardware, reflect that */
3275 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
)
3276 return RFKILL_STATE_HARD_BLOCKED
;
3278 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3280 return (tpacpi_wwan_emulstate
) ?
3281 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3284 if (!acpi_evalf(hkey_handle
, &status
, "GWAN", "d"))
3287 return ((status
& TP_ACPI_WANCARD_RADIOSSW
) != 0) ?
3288 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3291 static void wan_update_rfk(void)
3295 if (!tpacpi_wan_rfkill
)
3298 status
= wan_get_radiosw();
3301 rfkill_force_state(tpacpi_wan_rfkill
, status
);
3304 static int wan_set_radiosw(int radio_on
, int update_rfk
)
3308 if (!tp_features
.wan
)
3311 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3312 * reason to risk weird behaviour. */
3313 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
3317 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3319 tpacpi_wwan_emulstate
= !!radio_on
;
3326 /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
3328 status
= TP_ACPI_WANCARD_RADIOSSW
;
3331 if (!acpi_evalf(hkey_handle
, NULL
, "SWAN", "vd", status
))
3340 /* sysfs wan enable ---------------------------------------------------- */
3341 static ssize_t
wan_enable_show(struct device
*dev
,
3342 struct device_attribute
*attr
,
3347 status
= wan_get_radiosw();
3351 return snprintf(buf
, PAGE_SIZE
, "%d\n",
3352 (status
== RFKILL_STATE_UNBLOCKED
) ? 1 : 0);
3355 static ssize_t
wan_enable_store(struct device
*dev
,
3356 struct device_attribute
*attr
,
3357 const char *buf
, size_t count
)
3362 if (parse_strtoul(buf
, 1, &t
))
3365 res
= wan_set_radiosw(t
, 1);
3367 return (res
) ? res
: count
;
3370 static struct device_attribute dev_attr_wan_enable
=
3371 __ATTR(wwan_enable
, S_IWUSR
| S_IRUGO
,
3372 wan_enable_show
, wan_enable_store
);
3374 /* --------------------------------------------------------------------- */
3376 static struct attribute
*wan_attributes
[] = {
3377 &dev_attr_wan_enable
.attr
,
3381 static const struct attribute_group wan_attr_group
= {
3382 .attrs
= wan_attributes
,
3385 static int tpacpi_wan_rfk_get(void *data
, enum rfkill_state
*state
)
3387 int wans
= wan_get_radiosw();
3396 static int tpacpi_wan_rfk_set(void *data
, enum rfkill_state state
)
3398 return wan_set_radiosw((state
== RFKILL_STATE_UNBLOCKED
), 0);
3401 static void wan_shutdown(void)
3403 /* Order firmware to save current state to NVRAM */
3404 if (!acpi_evalf(NULL
, NULL
, "\\WGSV", "vd",
3405 TP_ACPI_WGSV_SAVE_STATE
))
3406 printk(TPACPI_NOTICE
3407 "failed to save WWAN state to NVRAM\n");
3410 static void wan_exit(void)
3414 if (tpacpi_wan_rfkill
)
3415 rfkill_unregister(tpacpi_wan_rfkill
);
3417 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
3421 static int __init
wan_init(struct ibm_init_struct
*iibm
)
3426 vdbg_printk(TPACPI_DBG_INIT
, "initializing wan subdriver\n");
3428 TPACPI_ACPIHANDLE_INIT(hkey
);
3430 tp_features
.wan
= hkey_handle
&&
3431 acpi_evalf(hkey_handle
, &status
, "GWAN", "qd");
3433 vdbg_printk(TPACPI_DBG_INIT
, "wan is %s, status 0x%02x\n",
3434 str_supported(tp_features
.wan
),
3437 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3439 tp_features
.wan
= 1;
3441 "wwan switch emulation enabled\n");
3444 if (tp_features
.wan
&&
3445 !(status
& TP_ACPI_WANCARD_HWPRESENT
)) {
3446 /* no wan hardware present in system */
3447 tp_features
.wan
= 0;
3448 dbg_printk(TPACPI_DBG_INIT
,
3449 "wan hardware not installed\n");
3452 if (!tp_features
.wan
)
3455 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
3460 res
= tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID
,
3466 tpacpi_wan_rfk_get
);
3475 /* procfs -------------------------------------------------------------- */
3476 static int wan_read(char *p
)
3479 int status
= wan_get_radiosw();
3481 if (!tp_features
.wan
)
3482 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
3484 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
3485 (status
== RFKILL_STATE_UNBLOCKED
) ?
3486 "enabled" : "disabled");
3487 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n");
3493 static int wan_write(char *buf
)
3497 if (!tp_features
.wan
)
3500 while ((cmd
= next_cmd(&buf
))) {
3501 if (strlencmp(cmd
, "enable") == 0) {
3502 wan_set_radiosw(1, 1);
3503 } else if (strlencmp(cmd
, "disable") == 0) {
3504 wan_set_radiosw(0, 1);
3512 static struct ibm_struct wan_driver_data
= {
3517 .suspend
= wan_suspend
,
3518 .shutdown
= wan_shutdown
,
3521 /*************************************************************************
3526 /* ACPI GUWB/SUWB bits */
3527 TP_ACPI_UWB_HWPRESENT
= 0x01, /* UWB hw available */
3528 TP_ACPI_UWB_RADIOSSW
= 0x02, /* UWB radio enabled */
3531 static struct rfkill
*tpacpi_uwb_rfkill
;
3533 static int uwb_get_radiosw(void)
3537 if (!tp_features
.uwb
)
3540 /* WLSW overrides UWB in firmware/hardware, reflect that */
3541 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
)
3542 return RFKILL_STATE_HARD_BLOCKED
;
3544 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3546 return (tpacpi_uwb_emulstate
) ?
3547 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3550 if (!acpi_evalf(hkey_handle
, &status
, "GUWB", "d"))
3553 return ((status
& TP_ACPI_UWB_RADIOSSW
) != 0) ?
3554 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3557 static void uwb_update_rfk(void)
3561 if (!tpacpi_uwb_rfkill
)
3564 status
= uwb_get_radiosw();
3567 rfkill_force_state(tpacpi_uwb_rfkill
, status
);
3570 static int uwb_set_radiosw(int radio_on
, int update_rfk
)
3574 if (!tp_features
.uwb
)
3577 /* WLSW overrides UWB in firmware/hardware, but there is no
3578 * reason to risk weird behaviour. */
3579 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
3583 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3585 tpacpi_uwb_emulstate
= !!radio_on
;
3592 status
= (radio_on
) ? TP_ACPI_UWB_RADIOSSW
: 0;
3593 if (!acpi_evalf(hkey_handle
, NULL
, "SUWB", "vd", status
))
3602 /* --------------------------------------------------------------------- */
3604 static int tpacpi_uwb_rfk_get(void *data
, enum rfkill_state
*state
)
3606 int uwbs
= uwb_get_radiosw();
3615 static int tpacpi_uwb_rfk_set(void *data
, enum rfkill_state state
)
3617 return uwb_set_radiosw((state
== RFKILL_STATE_UNBLOCKED
), 0);
3620 static void uwb_exit(void)
3622 if (tpacpi_uwb_rfkill
)
3623 rfkill_unregister(tpacpi_uwb_rfkill
);
3626 static int __init
uwb_init(struct ibm_init_struct
*iibm
)
3631 vdbg_printk(TPACPI_DBG_INIT
, "initializing uwb subdriver\n");
3633 TPACPI_ACPIHANDLE_INIT(hkey
);
3635 tp_features
.uwb
= hkey_handle
&&
3636 acpi_evalf(hkey_handle
, &status
, "GUWB", "qd");
3638 vdbg_printk(TPACPI_DBG_INIT
, "uwb is %s, status 0x%02x\n",
3639 str_supported(tp_features
.uwb
),
3642 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3644 tp_features
.uwb
= 1;
3646 "uwb switch emulation enabled\n");
3649 if (tp_features
.uwb
&&
3650 !(status
& TP_ACPI_UWB_HWPRESENT
)) {
3651 /* no uwb hardware present in system */
3652 tp_features
.uwb
= 0;
3653 dbg_printk(TPACPI_DBG_INIT
,
3654 "uwb hardware not installed\n");
3657 if (!tp_features
.uwb
)
3660 res
= tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID
,
3666 tpacpi_uwb_rfk_get
);
3671 static struct ibm_struct uwb_driver_data
= {
3674 .flags
.experimental
= 1,
3677 /*************************************************************************
3681 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
3683 enum video_access_mode
{
3684 TPACPI_VIDEO_NONE
= 0,
3685 TPACPI_VIDEO_570
, /* 570 */
3686 TPACPI_VIDEO_770
, /* 600e/x, 770e, 770x */
3687 TPACPI_VIDEO_NEW
, /* all others */
3690 enum { /* video status flags, based on VIDEO_570 */
3691 TP_ACPI_VIDEO_S_LCD
= 0x01, /* LCD output enabled */
3692 TP_ACPI_VIDEO_S_CRT
= 0x02, /* CRT output enabled */
3693 TP_ACPI_VIDEO_S_DVI
= 0x08, /* DVI output enabled */
3696 enum { /* TPACPI_VIDEO_570 constants */
3697 TP_ACPI_VIDEO_570_PHSCMD
= 0x87, /* unknown magic constant :( */
3698 TP_ACPI_VIDEO_570_PHSMASK
= 0x03, /* PHS bits that map to
3699 * video_status_flags */
3700 TP_ACPI_VIDEO_570_PHS2CMD
= 0x8b, /* unknown magic constant :( */
3701 TP_ACPI_VIDEO_570_PHS2SET
= 0x80, /* unknown magic constant :( */
3704 static enum video_access_mode video_supported
;
3705 static int video_orig_autosw
;
3707 static int video_autosw_get(void);
3708 static int video_autosw_set(int enable
);
3710 TPACPI_HANDLE(vid2
, root
, "\\_SB.PCI0.AGPB.VID"); /* G41 */
3712 static int __init
video_init(struct ibm_init_struct
*iibm
)
3716 vdbg_printk(TPACPI_DBG_INIT
, "initializing video subdriver\n");
3718 TPACPI_ACPIHANDLE_INIT(vid
);
3719 TPACPI_ACPIHANDLE_INIT(vid2
);
3721 if (vid2_handle
&& acpi_evalf(NULL
, &ivga
, "\\IVGA", "d") && ivga
)
3722 /* G41, assume IVGA doesn't change */
3723 vid_handle
= vid2_handle
;
3726 /* video switching not supported on R30, R31 */
3727 video_supported
= TPACPI_VIDEO_NONE
;
3728 else if (acpi_evalf(vid_handle
, &video_orig_autosw
, "SWIT", "qd"))
3730 video_supported
= TPACPI_VIDEO_570
;
3731 else if (acpi_evalf(vid_handle
, &video_orig_autosw
, "^VADL", "qd"))
3732 /* 600e/x, 770e, 770x */
3733 video_supported
= TPACPI_VIDEO_770
;
3736 video_supported
= TPACPI_VIDEO_NEW
;
3738 vdbg_printk(TPACPI_DBG_INIT
, "video is %s, mode %d\n",
3739 str_supported(video_supported
!= TPACPI_VIDEO_NONE
),
3742 return (video_supported
!= TPACPI_VIDEO_NONE
)? 0 : 1;
3745 static void video_exit(void)
3747 dbg_printk(TPACPI_DBG_EXIT
,
3748 "restoring original video autoswitch mode\n");
3749 if (video_autosw_set(video_orig_autosw
))
3750 printk(TPACPI_ERR
"error while trying to restore original "
3751 "video autoswitch mode\n");
3754 static int video_outputsw_get(void)
3759 switch (video_supported
) {
3760 case TPACPI_VIDEO_570
:
3761 if (!acpi_evalf(NULL
, &i
, "\\_SB.PHS", "dd",
3762 TP_ACPI_VIDEO_570_PHSCMD
))
3764 status
= i
& TP_ACPI_VIDEO_570_PHSMASK
;
3766 case TPACPI_VIDEO_770
:
3767 if (!acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
3770 status
|= TP_ACPI_VIDEO_S_LCD
;
3771 if (!acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
3774 status
|= TP_ACPI_VIDEO_S_CRT
;
3776 case TPACPI_VIDEO_NEW
:
3777 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 1) ||
3778 !acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
3781 status
|= TP_ACPI_VIDEO_S_CRT
;
3783 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0) ||
3784 !acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
3787 status
|= TP_ACPI_VIDEO_S_LCD
;
3788 if (!acpi_evalf(NULL
, &i
, "\\VCDD", "d"))
3791 status
|= TP_ACPI_VIDEO_S_DVI
;
3800 static int video_outputsw_set(int status
)
3805 switch (video_supported
) {
3806 case TPACPI_VIDEO_570
:
3807 res
= acpi_evalf(NULL
, NULL
,
3808 "\\_SB.PHS2", "vdd",
3809 TP_ACPI_VIDEO_570_PHS2CMD
,
3810 status
| TP_ACPI_VIDEO_570_PHS2SET
);
3812 case TPACPI_VIDEO_770
:
3813 autosw
= video_autosw_get();
3817 res
= video_autosw_set(1);
3820 res
= acpi_evalf(vid_handle
, NULL
,
3821 "ASWT", "vdd", status
* 0x100, 0);
3822 if (!autosw
&& video_autosw_set(autosw
)) {
3824 "video auto-switch left enabled due to error\n");
3828 case TPACPI_VIDEO_NEW
:
3829 res
= acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0x80) &&
3830 acpi_evalf(NULL
, NULL
, "\\VSDS", "vdd", status
, 1);
3836 return (res
)? 0 : -EIO
;
3839 static int video_autosw_get(void)
3843 switch (video_supported
) {
3844 case TPACPI_VIDEO_570
:
3845 if (!acpi_evalf(vid_handle
, &autosw
, "SWIT", "d"))
3848 case TPACPI_VIDEO_770
:
3849 case TPACPI_VIDEO_NEW
:
3850 if (!acpi_evalf(vid_handle
, &autosw
, "^VDEE", "d"))
3860 static int video_autosw_set(int enable
)
3862 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", (enable
)? 1 : 0))
3867 static int video_outputsw_cycle(void)
3869 int autosw
= video_autosw_get();
3875 switch (video_supported
) {
3876 case TPACPI_VIDEO_570
:
3877 res
= video_autosw_set(1);
3880 res
= acpi_evalf(ec_handle
, NULL
, "_Q16", "v");
3882 case TPACPI_VIDEO_770
:
3883 case TPACPI_VIDEO_NEW
:
3884 res
= video_autosw_set(1);
3887 res
= acpi_evalf(vid_handle
, NULL
, "VSWT", "v");
3892 if (!autosw
&& video_autosw_set(autosw
)) {
3894 "video auto-switch left enabled due to error\n");
3898 return (res
)? 0 : -EIO
;
3901 static int video_expand_toggle(void)
3903 switch (video_supported
) {
3904 case TPACPI_VIDEO_570
:
3905 return acpi_evalf(ec_handle
, NULL
, "_Q17", "v")?
3907 case TPACPI_VIDEO_770
:
3908 return acpi_evalf(vid_handle
, NULL
, "VEXP", "v")?
3910 case TPACPI_VIDEO_NEW
:
3911 return acpi_evalf(NULL
, NULL
, "\\VEXP", "v")?
3919 static int video_read(char *p
)
3924 if (video_supported
== TPACPI_VIDEO_NONE
) {
3925 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
3929 status
= video_outputsw_get();
3933 autosw
= video_autosw_get();
3937 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
3938 len
+= sprintf(p
+ len
, "lcd:\t\t%s\n", enabled(status
, 0));
3939 len
+= sprintf(p
+ len
, "crt:\t\t%s\n", enabled(status
, 1));
3940 if (video_supported
== TPACPI_VIDEO_NEW
)
3941 len
+= sprintf(p
+ len
, "dvi:\t\t%s\n", enabled(status
, 3));
3942 len
+= sprintf(p
+ len
, "auto:\t\t%s\n", enabled(autosw
, 0));
3943 len
+= sprintf(p
+ len
, "commands:\tlcd_enable, lcd_disable\n");
3944 len
+= sprintf(p
+ len
, "commands:\tcrt_enable, crt_disable\n");
3945 if (video_supported
== TPACPI_VIDEO_NEW
)
3946 len
+= sprintf(p
+ len
, "commands:\tdvi_enable, dvi_disable\n");
3947 len
+= sprintf(p
+ len
, "commands:\tauto_enable, auto_disable\n");
3948 len
+= sprintf(p
+ len
, "commands:\tvideo_switch, expand_toggle\n");
3953 static int video_write(char *buf
)
3956 int enable
, disable
, status
;
3959 if (video_supported
== TPACPI_VIDEO_NONE
)
3965 while ((cmd
= next_cmd(&buf
))) {
3966 if (strlencmp(cmd
, "lcd_enable") == 0) {
3967 enable
|= TP_ACPI_VIDEO_S_LCD
;
3968 } else if (strlencmp(cmd
, "lcd_disable") == 0) {
3969 disable
|= TP_ACPI_VIDEO_S_LCD
;
3970 } else if (strlencmp(cmd
, "crt_enable") == 0) {
3971 enable
|= TP_ACPI_VIDEO_S_CRT
;
3972 } else if (strlencmp(cmd
, "crt_disable") == 0) {
3973 disable
|= TP_ACPI_VIDEO_S_CRT
;
3974 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
3975 strlencmp(cmd
, "dvi_enable") == 0) {
3976 enable
|= TP_ACPI_VIDEO_S_DVI
;
3977 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
3978 strlencmp(cmd
, "dvi_disable") == 0) {
3979 disable
|= TP_ACPI_VIDEO_S_DVI
;
3980 } else if (strlencmp(cmd
, "auto_enable") == 0) {
3981 res
= video_autosw_set(1);
3984 } else if (strlencmp(cmd
, "auto_disable") == 0) {
3985 res
= video_autosw_set(0);
3988 } else if (strlencmp(cmd
, "video_switch") == 0) {
3989 res
= video_outputsw_cycle();
3992 } else if (strlencmp(cmd
, "expand_toggle") == 0) {
3993 res
= video_expand_toggle();
4000 if (enable
|| disable
) {
4001 status
= video_outputsw_get();
4004 res
= video_outputsw_set((status
& ~disable
) | enable
);
4012 static struct ibm_struct video_driver_data
= {
4015 .write
= video_write
,
4019 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4021 /*************************************************************************
4022 * Light (thinklight) subdriver
4025 TPACPI_HANDLE(lght
, root
, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4026 TPACPI_HANDLE(ledb
, ec
, "LEDB"); /* G4x */
4028 static int light_get_status(void)
4032 if (tp_features
.light_status
) {
4033 if (!acpi_evalf(ec_handle
, &status
, "KBLT", "d"))
4041 static int light_set_status(int status
)
4045 if (tp_features
.light
) {
4047 rc
= acpi_evalf(cmos_handle
, NULL
, NULL
, "vd",
4049 TP_CMOS_THINKLIGHT_ON
:
4050 TP_CMOS_THINKLIGHT_OFF
);
4052 rc
= acpi_evalf(lght_handle
, NULL
, NULL
, "vd",
4055 return (rc
)? 0 : -EIO
;
4061 static void light_set_status_worker(struct work_struct
*work
)
4063 struct tpacpi_led_classdev
*data
=
4064 container_of(work
, struct tpacpi_led_classdev
, work
);
4066 if (likely(tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
))
4067 light_set_status((data
->new_state
!= TPACPI_LED_OFF
));
4070 static void light_sysfs_set(struct led_classdev
*led_cdev
,
4071 enum led_brightness brightness
)
4073 struct tpacpi_led_classdev
*data
=
4074 container_of(led_cdev
,
4075 struct tpacpi_led_classdev
,
4077 data
->new_state
= (brightness
!= LED_OFF
) ?
4078 TPACPI_LED_ON
: TPACPI_LED_OFF
;
4079 queue_work(tpacpi_wq
, &data
->work
);
4082 static enum led_brightness
light_sysfs_get(struct led_classdev
*led_cdev
)
4084 return (light_get_status() == 1)? LED_FULL
: LED_OFF
;
4087 static struct tpacpi_led_classdev tpacpi_led_thinklight
= {
4089 .name
= "tpacpi::thinklight",
4090 .brightness_set
= &light_sysfs_set
,
4091 .brightness_get
= &light_sysfs_get
,
4095 static int __init
light_init(struct ibm_init_struct
*iibm
)
4099 vdbg_printk(TPACPI_DBG_INIT
, "initializing light subdriver\n");
4101 TPACPI_ACPIHANDLE_INIT(ledb
);
4102 TPACPI_ACPIHANDLE_INIT(lght
);
4103 TPACPI_ACPIHANDLE_INIT(cmos
);
4104 INIT_WORK(&tpacpi_led_thinklight
.work
, light_set_status_worker
);
4106 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
4107 tp_features
.light
= (cmos_handle
|| lght_handle
) && !ledb_handle
;
4109 if (tp_features
.light
)
4110 /* light status not supported on
4111 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
4112 tp_features
.light_status
=
4113 acpi_evalf(ec_handle
, NULL
, "KBLT", "qv");
4115 vdbg_printk(TPACPI_DBG_INIT
, "light is %s, light status is %s\n",
4116 str_supported(tp_features
.light
),
4117 str_supported(tp_features
.light_status
));
4119 if (!tp_features
.light
)
4122 rc
= led_classdev_register(&tpacpi_pdev
->dev
,
4123 &tpacpi_led_thinklight
.led_classdev
);
4126 tp_features
.light
= 0;
4127 tp_features
.light_status
= 0;
4135 static void light_exit(void)
4137 led_classdev_unregister(&tpacpi_led_thinklight
.led_classdev
);
4138 if (work_pending(&tpacpi_led_thinklight
.work
))
4139 flush_workqueue(tpacpi_wq
);
4142 static int light_read(char *p
)
4147 if (!tp_features
.light
) {
4148 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4149 } else if (!tp_features
.light_status
) {
4150 len
+= sprintf(p
+ len
, "status:\t\tunknown\n");
4151 len
+= sprintf(p
+ len
, "commands:\ton, off\n");
4153 status
= light_get_status();
4156 len
+= sprintf(p
+ len
, "status:\t\t%s\n", onoff(status
, 0));
4157 len
+= sprintf(p
+ len
, "commands:\ton, off\n");
4163 static int light_write(char *buf
)
4168 if (!tp_features
.light
)
4171 while ((cmd
= next_cmd(&buf
))) {
4172 if (strlencmp(cmd
, "on") == 0) {
4174 } else if (strlencmp(cmd
, "off") == 0) {
4180 return light_set_status(newstatus
);
4183 static struct ibm_struct light_driver_data
= {
4186 .write
= light_write
,
4190 /*************************************************************************
4194 #ifdef CONFIG_THINKPAD_ACPI_DOCK
4196 static void dock_notify(struct ibm_struct
*ibm
, u32 event
);
4197 static int dock_read(char *p
);
4198 static int dock_write(char *buf
);
4200 TPACPI_HANDLE(dock
, root
, "\\_SB.GDCK", /* X30, X31, X40 */
4201 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
4202 "\\_SB.PCI0.PCI1.DOCK", /* all others */
4203 "\\_SB.PCI.ISA.SLCE", /* 570 */
4204 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
4206 /* don't list other alternatives as we install a notify handler on the 570 */
4207 TPACPI_HANDLE(pci
, root
, "\\_SB.PCI"); /* 570 */
4209 static const struct acpi_device_id ibm_pci_device_ids
[] = {
4210 {PCI_ROOT_HID_STRING
, 0},
4214 static struct tp_acpi_drv_struct ibm_dock_acpidriver
[2] = {
4216 .notify
= dock_notify
,
4217 .handle
= &dock_handle
,
4218 .type
= ACPI_SYSTEM_NOTIFY
,
4221 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
4222 * We just use it to get notifications of dock hotplug
4223 * in very old thinkpads */
4224 .hid
= ibm_pci_device_ids
,
4225 .notify
= dock_notify
,
4226 .handle
= &pci_handle
,
4227 .type
= ACPI_SYSTEM_NOTIFY
,
4231 static struct ibm_struct dock_driver_data
[2] = {
4235 .write
= dock_write
,
4236 .acpi
= &ibm_dock_acpidriver
[0],
4240 .acpi
= &ibm_dock_acpidriver
[1],
4244 #define dock_docked() (_sta(dock_handle) & 1)
4246 static int __init
dock_init(struct ibm_init_struct
*iibm
)
4248 vdbg_printk(TPACPI_DBG_INIT
, "initializing dock subdriver\n");
4250 TPACPI_ACPIHANDLE_INIT(dock
);
4252 vdbg_printk(TPACPI_DBG_INIT
, "dock is %s\n",
4253 str_supported(dock_handle
!= NULL
));
4255 return (dock_handle
)? 0 : 1;
4258 static int __init
dock_init2(struct ibm_init_struct
*iibm
)
4262 vdbg_printk(TPACPI_DBG_INIT
, "initializing dock subdriver part 2\n");
4264 if (dock_driver_data
[0].flags
.acpi_driver_registered
&&
4265 dock_driver_data
[0].flags
.acpi_notify_installed
) {
4266 TPACPI_ACPIHANDLE_INIT(pci
);
4267 dock2_needed
= (pci_handle
!= NULL
);
4268 vdbg_printk(TPACPI_DBG_INIT
,
4269 "dock PCI handler for the TP 570 is %s\n",
4270 str_supported(dock2_needed
));
4272 vdbg_printk(TPACPI_DBG_INIT
,
4273 "dock subdriver part 2 not required\n");
4277 return (dock2_needed
)? 0 : 1;
4280 static void dock_notify(struct ibm_struct
*ibm
, u32 event
)
4282 int docked
= dock_docked();
4283 int pci
= ibm
->acpi
->hid
&& ibm
->acpi
->device
&&
4284 acpi_match_device_ids(ibm
->acpi
->device
, ibm_pci_device_ids
);
4287 if (event
== 1 && !pci
) /* 570 */
4288 data
= 1; /* button */
4289 else if (event
== 1 && pci
) /* 570 */
4290 data
= 3; /* dock */
4291 else if (event
== 3 && docked
)
4292 data
= 1; /* button */
4293 else if (event
== 3 && !docked
)
4294 data
= 2; /* undock */
4295 else if (event
== 0 && docked
)
4296 data
= 3; /* dock */
4298 printk(TPACPI_ERR
"unknown dock event %d, status %d\n",
4299 event
, _sta(dock_handle
));
4300 data
= 0; /* unknown */
4302 acpi_bus_generate_proc_event(ibm
->acpi
->device
, event
, data
);
4303 acpi_bus_generate_netlink_event(ibm
->acpi
->device
->pnp
.device_class
,
4304 dev_name(&ibm
->acpi
->device
->dev
),
4308 static int dock_read(char *p
)
4311 int docked
= dock_docked();
4314 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4316 len
+= sprintf(p
+ len
, "status:\t\tundocked\n");
4318 len
+= sprintf(p
+ len
, "status:\t\tdocked\n");
4319 len
+= sprintf(p
+ len
, "commands:\tdock, undock\n");
4325 static int dock_write(char *buf
)
4332 while ((cmd
= next_cmd(&buf
))) {
4333 if (strlencmp(cmd
, "undock") == 0) {
4334 if (!acpi_evalf(dock_handle
, NULL
, "_DCK", "vd", 0) ||
4335 !acpi_evalf(dock_handle
, NULL
, "_EJ0", "vd", 1))
4337 } else if (strlencmp(cmd
, "dock") == 0) {
4338 if (!acpi_evalf(dock_handle
, NULL
, "_DCK", "vd", 1))
4347 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
4349 /*************************************************************************
4353 #ifdef CONFIG_THINKPAD_ACPI_BAY
4355 TPACPI_HANDLE(bay
, root
, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
4356 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
4357 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
4358 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
4359 ); /* A21e, R30, R31 */
4360 TPACPI_HANDLE(bay_ej
, bay
, "_EJ3", /* 600e/x, A2xm/p, A3x */
4361 "_EJ0", /* all others */
4362 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
4363 TPACPI_HANDLE(bay2
, root
, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
4364 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
4366 TPACPI_HANDLE(bay2_ej
, bay2
, "_EJ3", /* 600e/x, 770e, A3x */
4370 static int __init
bay_init(struct ibm_init_struct
*iibm
)
4372 vdbg_printk(TPACPI_DBG_INIT
, "initializing bay subdriver\n");
4374 TPACPI_ACPIHANDLE_INIT(bay
);
4376 TPACPI_ACPIHANDLE_INIT(bay_ej
);
4377 TPACPI_ACPIHANDLE_INIT(bay2
);
4379 TPACPI_ACPIHANDLE_INIT(bay2_ej
);
4381 tp_features
.bay_status
= bay_handle
&&
4382 acpi_evalf(bay_handle
, NULL
, "_STA", "qv");
4383 tp_features
.bay_status2
= bay2_handle
&&
4384 acpi_evalf(bay2_handle
, NULL
, "_STA", "qv");
4386 tp_features
.bay_eject
= bay_handle
&& bay_ej_handle
&&
4387 (strlencmp(bay_ej_path
, "_EJ0") == 0 || experimental
);
4388 tp_features
.bay_eject2
= bay2_handle
&& bay2_ej_handle
&&
4389 (strlencmp(bay2_ej_path
, "_EJ0") == 0 || experimental
);
4391 vdbg_printk(TPACPI_DBG_INIT
,
4392 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
4393 str_supported(tp_features
.bay_status
),
4394 str_supported(tp_features
.bay_eject
),
4395 str_supported(tp_features
.bay_status2
),
4396 str_supported(tp_features
.bay_eject2
));
4398 return (tp_features
.bay_status
|| tp_features
.bay_eject
||
4399 tp_features
.bay_status2
|| tp_features
.bay_eject2
)? 0 : 1;
4402 static void bay_notify(struct ibm_struct
*ibm
, u32 event
)
4404 acpi_bus_generate_proc_event(ibm
->acpi
->device
, event
, 0);
4405 acpi_bus_generate_netlink_event(ibm
->acpi
->device
->pnp
.device_class
,
4406 dev_name(&ibm
->acpi
->device
->dev
),
4410 #define bay_occupied(b) (_sta(b##_handle) & 1)
4412 static int bay_read(char *p
)
4415 int occupied
= bay_occupied(bay
);
4416 int occupied2
= bay_occupied(bay2
);
4419 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
4420 tp_features
.bay_status
?
4421 (occupied
? "occupied" : "unoccupied") :
4423 if (tp_features
.bay_status2
)
4424 len
+= sprintf(p
+ len
, "status2:\t%s\n", occupied2
?
4425 "occupied" : "unoccupied");
4427 eject
= tp_features
.bay_eject
&& occupied
;
4428 eject2
= tp_features
.bay_eject2
&& occupied2
;
4430 if (eject
&& eject2
)
4431 len
+= sprintf(p
+ len
, "commands:\teject, eject2\n");
4433 len
+= sprintf(p
+ len
, "commands:\teject\n");
4435 len
+= sprintf(p
+ len
, "commands:\teject2\n");
4440 static int bay_write(char *buf
)
4444 if (!tp_features
.bay_eject
&& !tp_features
.bay_eject2
)
4447 while ((cmd
= next_cmd(&buf
))) {
4448 if (tp_features
.bay_eject
&& strlencmp(cmd
, "eject") == 0) {
4449 if (!acpi_evalf(bay_ej_handle
, NULL
, NULL
, "vd", 1))
4451 } else if (tp_features
.bay_eject2
&&
4452 strlencmp(cmd
, "eject2") == 0) {
4453 if (!acpi_evalf(bay2_ej_handle
, NULL
, NULL
, "vd", 1))
4462 static struct tp_acpi_drv_struct ibm_bay_acpidriver
= {
4463 .notify
= bay_notify
,
4464 .handle
= &bay_handle
,
4465 .type
= ACPI_SYSTEM_NOTIFY
,
4468 static struct ibm_struct bay_driver_data
= {
4472 .acpi
= &ibm_bay_acpidriver
,
4475 #endif /* CONFIG_THINKPAD_ACPI_BAY */
4477 /*************************************************************************
4481 /* sysfs cmos_command -------------------------------------------------- */
4482 static ssize_t
cmos_command_store(struct device
*dev
,
4483 struct device_attribute
*attr
,
4484 const char *buf
, size_t count
)
4486 unsigned long cmos_cmd
;
4489 if (parse_strtoul(buf
, 21, &cmos_cmd
))
4492 res
= issue_thinkpad_cmos_command(cmos_cmd
);
4493 return (res
)? res
: count
;
4496 static struct device_attribute dev_attr_cmos_command
=
4497 __ATTR(cmos_command
, S_IWUSR
, NULL
, cmos_command_store
);
4499 /* --------------------------------------------------------------------- */
4501 static int __init
cmos_init(struct ibm_init_struct
*iibm
)
4505 vdbg_printk(TPACPI_DBG_INIT
,
4506 "initializing cmos commands subdriver\n");
4508 TPACPI_ACPIHANDLE_INIT(cmos
);
4510 vdbg_printk(TPACPI_DBG_INIT
, "cmos commands are %s\n",
4511 str_supported(cmos_handle
!= NULL
));
4513 res
= device_create_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4517 return (cmos_handle
)? 0 : 1;
4520 static void cmos_exit(void)
4522 device_remove_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4525 static int cmos_read(char *p
)
4529 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4530 R30, R31, T20-22, X20-21 */
4532 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4534 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
4535 len
+= sprintf(p
+ len
, "commands:\t<cmd> (<cmd> is 0-21)\n");
4541 static int cmos_write(char *buf
)
4546 while ((cmd
= next_cmd(&buf
))) {
4547 if (sscanf(cmd
, "%u", &cmos_cmd
) == 1 &&
4548 cmos_cmd
>= 0 && cmos_cmd
<= 21) {
4553 res
= issue_thinkpad_cmos_command(cmos_cmd
);
4561 static struct ibm_struct cmos_driver_data
= {
4564 .write
= cmos_write
,
4568 /*************************************************************************
4572 enum led_access_mode
{
4573 TPACPI_LED_NONE
= 0,
4574 TPACPI_LED_570
, /* 570 */
4575 TPACPI_LED_OLD
, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4576 TPACPI_LED_NEW
, /* all others */
4579 enum { /* For TPACPI_LED_OLD */
4580 TPACPI_LED_EC_HLCL
= 0x0c, /* EC reg to get led to power on */
4581 TPACPI_LED_EC_HLBL
= 0x0d, /* EC reg to blink a lit led */
4582 TPACPI_LED_EC_HLMS
= 0x0e, /* EC reg to select led to command */
4585 static enum led_access_mode led_supported
;
4587 TPACPI_HANDLE(led
, ec
, "SLED", /* 570 */
4588 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
4589 /* T20-22, X20-21 */
4590 "LED", /* all others */
4593 #define TPACPI_LED_NUMLEDS 8
4594 static struct tpacpi_led_classdev
*tpacpi_leds
;
4595 static enum led_status_t tpacpi_led_state_cache
[TPACPI_LED_NUMLEDS
];
4596 static const char * const tpacpi_led_names
[TPACPI_LED_NUMLEDS
] = {
4597 /* there's a limit of 19 chars + NULL before 2.6.26 */
4599 "tpacpi:orange:batt",
4600 "tpacpi:green:batt",
4601 "tpacpi::dock_active",
4602 "tpacpi::bay_active",
4603 "tpacpi::dock_batt",
4604 "tpacpi::unknown_led",
4608 static int led_get_status(const unsigned int led
)
4611 enum led_status_t led_s
;
4613 switch (led_supported
) {
4614 case TPACPI_LED_570
:
4615 if (!acpi_evalf(ec_handle
,
4616 &status
, "GLED", "dd", 1 << led
))
4618 led_s
= (status
== 0)?
4623 tpacpi_led_state_cache
[led
] = led_s
;
4632 static int led_set_status(const unsigned int led
,
4633 const enum led_status_t ledstatus
)
4635 /* off, on, blink. Index is led_status_t */
4636 static const unsigned int led_sled_arg1
[] = { 0, 1, 3 };
4637 static const unsigned int led_led_arg1
[] = { 0, 0x80, 0xc0 };
4641 switch (led_supported
) {
4642 case TPACPI_LED_570
:
4646 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
4647 (1 << led
), led_sled_arg1
[ledstatus
]))
4650 case TPACPI_LED_OLD
:
4651 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
4654 rc
= ec_write(TPACPI_LED_EC_HLMS
, (1 << led
));
4656 rc
= ec_write(TPACPI_LED_EC_HLBL
,
4657 (ledstatus
== TPACPI_LED_BLINK
) << led
);
4659 rc
= ec_write(TPACPI_LED_EC_HLCL
,
4660 (ledstatus
!= TPACPI_LED_OFF
) << led
);
4662 case TPACPI_LED_NEW
:
4664 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
4665 led
, led_led_arg1
[ledstatus
]))
4673 tpacpi_led_state_cache
[led
] = ledstatus
;
4678 static void led_set_status_worker(struct work_struct
*work
)
4680 struct tpacpi_led_classdev
*data
=
4681 container_of(work
, struct tpacpi_led_classdev
, work
);
4683 if (likely(tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
))
4684 led_set_status(data
->led
, data
->new_state
);
4687 static void led_sysfs_set(struct led_classdev
*led_cdev
,
4688 enum led_brightness brightness
)
4690 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
4691 struct tpacpi_led_classdev
, led_classdev
);
4693 if (brightness
== LED_OFF
)
4694 data
->new_state
= TPACPI_LED_OFF
;
4695 else if (tpacpi_led_state_cache
[data
->led
] != TPACPI_LED_BLINK
)
4696 data
->new_state
= TPACPI_LED_ON
;
4698 data
->new_state
= TPACPI_LED_BLINK
;
4700 queue_work(tpacpi_wq
, &data
->work
);
4703 static int led_sysfs_blink_set(struct led_classdev
*led_cdev
,
4704 unsigned long *delay_on
, unsigned long *delay_off
)
4706 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
4707 struct tpacpi_led_classdev
, led_classdev
);
4709 /* Can we choose the flash rate? */
4710 if (*delay_on
== 0 && *delay_off
== 0) {
4711 /* yes. set them to the hardware blink rate (1 Hz) */
4712 *delay_on
= 500; /* ms */
4713 *delay_off
= 500; /* ms */
4714 } else if ((*delay_on
!= 500) || (*delay_off
!= 500))
4717 data
->new_state
= TPACPI_LED_BLINK
;
4718 queue_work(tpacpi_wq
, &data
->work
);
4723 static enum led_brightness
led_sysfs_get(struct led_classdev
*led_cdev
)
4727 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
4728 struct tpacpi_led_classdev
, led_classdev
);
4730 rc
= led_get_status(data
->led
);
4732 if (rc
== TPACPI_LED_OFF
|| rc
< 0)
4733 rc
= LED_OFF
; /* no error handling in led class :( */
4740 static void led_exit(void)
4744 for (i
= 0; i
< TPACPI_LED_NUMLEDS
; i
++) {
4745 if (tpacpi_leds
[i
].led_classdev
.name
)
4746 led_classdev_unregister(&tpacpi_leds
[i
].led_classdev
);
4752 static int __init
led_init(struct ibm_init_struct
*iibm
)
4757 vdbg_printk(TPACPI_DBG_INIT
, "initializing LED subdriver\n");
4759 TPACPI_ACPIHANDLE_INIT(led
);
4762 /* led not supported on R30, R31 */
4763 led_supported
= TPACPI_LED_NONE
;
4764 else if (strlencmp(led_path
, "SLED") == 0)
4766 led_supported
= TPACPI_LED_570
;
4767 else if (strlencmp(led_path
, "SYSL") == 0)
4768 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4769 led_supported
= TPACPI_LED_OLD
;
4772 led_supported
= TPACPI_LED_NEW
;
4774 vdbg_printk(TPACPI_DBG_INIT
, "LED commands are %s, mode %d\n",
4775 str_supported(led_supported
), led_supported
);
4777 tpacpi_leds
= kzalloc(sizeof(*tpacpi_leds
) * TPACPI_LED_NUMLEDS
,
4780 printk(TPACPI_ERR
"Out of memory for LED data\n");
4784 for (i
= 0; i
< TPACPI_LED_NUMLEDS
; i
++) {
4785 tpacpi_leds
[i
].led
= i
;
4787 tpacpi_leds
[i
].led_classdev
.brightness_set
= &led_sysfs_set
;
4788 tpacpi_leds
[i
].led_classdev
.blink_set
= &led_sysfs_blink_set
;
4789 if (led_supported
== TPACPI_LED_570
)
4790 tpacpi_leds
[i
].led_classdev
.brightness_get
=
4793 tpacpi_leds
[i
].led_classdev
.name
= tpacpi_led_names
[i
];
4795 INIT_WORK(&tpacpi_leds
[i
].work
, led_set_status_worker
);
4797 rc
= led_classdev_register(&tpacpi_pdev
->dev
,
4798 &tpacpi_leds
[i
].led_classdev
);
4800 tpacpi_leds
[i
].led_classdev
.name
= NULL
;
4806 return (led_supported
!= TPACPI_LED_NONE
)? 0 : 1;
4809 #define str_led_status(s) \
4810 ((s) == TPACPI_LED_OFF ? "off" : \
4811 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
4813 static int led_read(char *p
)
4817 if (!led_supported
) {
4818 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4821 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
4823 if (led_supported
== TPACPI_LED_570
) {
4826 for (i
= 0; i
< 8; i
++) {
4827 status
= led_get_status(i
);
4830 len
+= sprintf(p
+ len
, "%d:\t\t%s\n",
4831 i
, str_led_status(status
));
4835 len
+= sprintf(p
+ len
, "commands:\t"
4836 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
4841 static int led_write(char *buf
)
4845 enum led_status_t s
;
4850 while ((cmd
= next_cmd(&buf
))) {
4851 if (sscanf(cmd
, "%d", &led
) != 1 || led
< 0 || led
> 7)
4854 if (strstr(cmd
, "off")) {
4856 } else if (strstr(cmd
, "on")) {
4858 } else if (strstr(cmd
, "blink")) {
4859 s
= TPACPI_LED_BLINK
;
4864 rc
= led_set_status(led
, s
);
4872 static struct ibm_struct led_driver_data
= {
4879 /*************************************************************************
4883 TPACPI_HANDLE(beep
, ec
, "BEEP"); /* all except R30, R31 */
4885 static int __init
beep_init(struct ibm_init_struct
*iibm
)
4887 vdbg_printk(TPACPI_DBG_INIT
, "initializing beep subdriver\n");
4889 TPACPI_ACPIHANDLE_INIT(beep
);
4891 vdbg_printk(TPACPI_DBG_INIT
, "beep is %s\n",
4892 str_supported(beep_handle
!= NULL
));
4894 return (beep_handle
)? 0 : 1;
4897 static int beep_read(char *p
)
4902 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4904 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
4905 len
+= sprintf(p
+ len
, "commands:\t<cmd> (<cmd> is 0-17)\n");
4911 static int beep_write(char *buf
)
4919 while ((cmd
= next_cmd(&buf
))) {
4920 if (sscanf(cmd
, "%u", &beep_cmd
) == 1 &&
4921 beep_cmd
>= 0 && beep_cmd
<= 17) {
4925 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vdd", beep_cmd
, 0))
4932 static struct ibm_struct beep_driver_data
= {
4935 .write
= beep_write
,
4938 /*************************************************************************
4942 enum thermal_access_mode
{
4943 TPACPI_THERMAL_NONE
= 0, /* No thermal support */
4944 TPACPI_THERMAL_ACPI_TMP07
, /* Use ACPI TMP0-7 */
4945 TPACPI_THERMAL_ACPI_UPDT
, /* Use ACPI TMP0-7 with UPDT */
4946 TPACPI_THERMAL_TPEC_8
, /* Use ACPI EC regs, 8 sensors */
4947 TPACPI_THERMAL_TPEC_16
, /* Use ACPI EC regs, 16 sensors */
4950 enum { /* TPACPI_THERMAL_TPEC_* */
4951 TP_EC_THERMAL_TMP0
= 0x78, /* ACPI EC regs TMP 0..7 */
4952 TP_EC_THERMAL_TMP8
= 0xC0, /* ACPI EC regs TMP 8..15 */
4953 TP_EC_THERMAL_TMP_NA
= -128, /* ACPI EC sensor not available */
4956 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
4957 struct ibm_thermal_sensors_struct
{
4958 s32 temp
[TPACPI_MAX_THERMAL_SENSORS
];
4961 static enum thermal_access_mode thermal_read_mode
;
4963 /* idx is zero-based */
4964 static int thermal_get_sensor(int idx
, s32
*value
)
4970 t
= TP_EC_THERMAL_TMP0
;
4972 switch (thermal_read_mode
) {
4973 #if TPACPI_MAX_THERMAL_SENSORS >= 16
4974 case TPACPI_THERMAL_TPEC_16
:
4975 if (idx
>= 8 && idx
<= 15) {
4976 t
= TP_EC_THERMAL_TMP8
;
4981 case TPACPI_THERMAL_TPEC_8
:
4983 if (!acpi_ec_read(t
+ idx
, &tmp
))
4985 *value
= tmp
* 1000;
4990 case TPACPI_THERMAL_ACPI_UPDT
:
4992 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
4993 if (!acpi_evalf(ec_handle
, NULL
, "UPDT", "v"))
4995 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
4997 *value
= (t
- 2732) * 100;
5002 case TPACPI_THERMAL_ACPI_TMP07
:
5004 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
5005 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
5007 if (t
> 127 || t
< -127)
5008 t
= TP_EC_THERMAL_TMP_NA
;
5014 case TPACPI_THERMAL_NONE
:
5022 static int thermal_get_sensors(struct ibm_thermal_sensors_struct
*s
)
5033 if (thermal_read_mode
== TPACPI_THERMAL_TPEC_16
)
5036 for (i
= 0 ; i
< n
; i
++) {
5037 res
= thermal_get_sensor(i
, &s
->temp
[i
]);
5045 /* sysfs temp##_input -------------------------------------------------- */
5047 static ssize_t
thermal_temp_input_show(struct device
*dev
,
5048 struct device_attribute
*attr
,
5051 struct sensor_device_attribute
*sensor_attr
=
5052 to_sensor_dev_attr(attr
);
5053 int idx
= sensor_attr
->index
;
5057 res
= thermal_get_sensor(idx
, &value
);
5060 if (value
== TP_EC_THERMAL_TMP_NA
* 1000)
5063 return snprintf(buf
, PAGE_SIZE
, "%d\n", value
);
5066 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
5067 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5068 thermal_temp_input_show, NULL, _idxB)
5070 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input
[] = {
5071 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5072 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5073 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5074 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5075 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5076 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5077 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5078 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5079 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5080 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5081 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5082 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5083 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5084 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5085 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5086 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5089 #define THERMAL_ATTRS(X) \
5090 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5092 static struct attribute
*thermal_temp_input_attr
[] = {
5112 static const struct attribute_group thermal_temp_input16_group
= {
5113 .attrs
= thermal_temp_input_attr
5116 static const struct attribute_group thermal_temp_input8_group
= {
5117 .attrs
= &thermal_temp_input_attr
[8]
5120 #undef THERMAL_SENSOR_ATTR_TEMP
5121 #undef THERMAL_ATTRS
5123 /* --------------------------------------------------------------------- */
5125 static int __init
thermal_init(struct ibm_init_struct
*iibm
)
5132 vdbg_printk(TPACPI_DBG_INIT
, "initializing thermal subdriver\n");
5134 acpi_tmp7
= acpi_evalf(ec_handle
, NULL
, "TMP7", "qv");
5136 if (thinkpad_id
.ec_model
) {
5138 * Direct EC access mode: sensors at registers
5139 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5140 * non-implemented, thermal sensors return 0x80 when
5145 for (i
= 0; i
< 8; i
++) {
5146 if (acpi_ec_read(TP_EC_THERMAL_TMP0
+ i
, &t
)) {
5152 if (acpi_ec_read(TP_EC_THERMAL_TMP8
+ i
, &t
)) {
5160 /* This is sheer paranoia, but we handle it anyway */
5163 "ThinkPad ACPI EC access misbehaving, "
5164 "falling back to ACPI TMPx access "
5166 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5169 "ThinkPad ACPI EC access misbehaving, "
5170 "disabling thermal sensors access\n");
5171 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5176 TPACPI_THERMAL_TPEC_16
: TPACPI_THERMAL_TPEC_8
;
5178 } else if (acpi_tmp7
) {
5179 if (acpi_evalf(ec_handle
, NULL
, "UPDT", "qv")) {
5180 /* 600e/x, 770e, 770x */
5181 thermal_read_mode
= TPACPI_THERMAL_ACPI_UPDT
;
5183 /* Standard ACPI TMPx access, max 8 sensors */
5184 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5187 /* temperatures not supported on 570, G4x, R30, R31, R32 */
5188 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5191 vdbg_printk(TPACPI_DBG_INIT
, "thermal is %s, mode %d\n",
5192 str_supported(thermal_read_mode
!= TPACPI_THERMAL_NONE
),
5195 switch (thermal_read_mode
) {
5196 case TPACPI_THERMAL_TPEC_16
:
5197 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5198 &thermal_temp_input16_group
);
5202 case TPACPI_THERMAL_TPEC_8
:
5203 case TPACPI_THERMAL_ACPI_TMP07
:
5204 case TPACPI_THERMAL_ACPI_UPDT
:
5205 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5206 &thermal_temp_input8_group
);
5210 case TPACPI_THERMAL_NONE
:
5218 static void thermal_exit(void)
5220 switch (thermal_read_mode
) {
5221 case TPACPI_THERMAL_TPEC_16
:
5222 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5223 &thermal_temp_input16_group
);
5225 case TPACPI_THERMAL_TPEC_8
:
5226 case TPACPI_THERMAL_ACPI_TMP07
:
5227 case TPACPI_THERMAL_ACPI_UPDT
:
5228 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5229 &thermal_temp_input16_group
);
5231 case TPACPI_THERMAL_NONE
:
5237 static int thermal_read(char *p
)
5241 struct ibm_thermal_sensors_struct t
;
5243 n
= thermal_get_sensors(&t
);
5244 if (unlikely(n
< 0))
5247 len
+= sprintf(p
+ len
, "temperatures:\t");
5250 for (i
= 0; i
< (n
- 1); i
++)
5251 len
+= sprintf(p
+ len
, "%d ", t
.temp
[i
] / 1000);
5252 len
+= sprintf(p
+ len
, "%d\n", t
.temp
[i
] / 1000);
5254 len
+= sprintf(p
+ len
, "not supported\n");
5259 static struct ibm_struct thermal_driver_data
= {
5261 .read
= thermal_read
,
5262 .exit
= thermal_exit
,
5265 /*************************************************************************
5269 static u8 ecdump_regs
[256];
5271 static int ecdump_read(char *p
)
5277 len
+= sprintf(p
+ len
, "EC "
5278 " +00 +01 +02 +03 +04 +05 +06 +07"
5279 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5280 for (i
= 0; i
< 256; i
+= 16) {
5281 len
+= sprintf(p
+ len
, "EC 0x%02x:", i
);
5282 for (j
= 0; j
< 16; j
++) {
5283 if (!acpi_ec_read(i
+ j
, &v
))
5285 if (v
!= ecdump_regs
[i
+ j
])
5286 len
+= sprintf(p
+ len
, " *%02x", v
);
5288 len
+= sprintf(p
+ len
, " %02x", v
);
5289 ecdump_regs
[i
+ j
] = v
;
5291 len
+= sprintf(p
+ len
, "\n");
5296 /* These are way too dangerous to advertise openly... */
5298 len
+= sprintf(p
+ len
, "commands:\t0x<offset> 0x<value>"
5299 " (<offset> is 00-ff, <value> is 00-ff)\n");
5300 len
+= sprintf(p
+ len
, "commands:\t0x<offset> <value> "
5301 " (<offset> is 00-ff, <value> is 0-255)\n");
5306 static int ecdump_write(char *buf
)
5311 while ((cmd
= next_cmd(&buf
))) {
5312 if (sscanf(cmd
, "0x%x 0x%x", &i
, &v
) == 2) {
5314 } else if (sscanf(cmd
, "0x%x %u", &i
, &v
) == 2) {
5318 if (i
>= 0 && i
< 256 && v
>= 0 && v
< 256) {
5319 if (!acpi_ec_write(i
, v
))
5328 static struct ibm_struct ecdump_driver_data
= {
5330 .read
= ecdump_read
,
5331 .write
= ecdump_write
,
5332 .flags
.experimental
= 1,
5335 /*************************************************************************
5336 * Backlight/brightness subdriver
5339 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5342 TP_EC_BACKLIGHT
= 0x31,
5344 /* TP_EC_BACKLIGHT bitmasks */
5345 TP_EC_BACKLIGHT_LVLMSK
= 0x1F,
5346 TP_EC_BACKLIGHT_CMDMSK
= 0xE0,
5347 TP_EC_BACKLIGHT_MAPSW
= 0x20,
5350 static struct backlight_device
*ibm_backlight_device
;
5351 static int brightness_mode
;
5352 static unsigned int brightness_enable
= 2; /* 2 = auto, 0 = no, 1 = yes */
5354 static struct mutex brightness_mutex
;
5357 * ThinkPads can read brightness from two places: EC 0x31, or
5358 * CMOS NVRAM byte 0x5E, bits 0-3.
5360 * EC 0x31 has the following layout
5361 * Bit 7: unknown function
5362 * Bit 6: unknown function
5363 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5364 * Bit 4: must be set to zero to avoid problems
5365 * Bit 3-0: backlight brightness level
5367 * brightness_get_raw returns status data in the EC 0x31 layout
5369 static int brightness_get_raw(int *status
)
5371 u8 lec
= 0, lcmos
= 0, level
= 0;
5373 if (brightness_mode
& 1) {
5374 if (!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
))
5376 level
= lec
& TP_EC_BACKLIGHT_LVLMSK
;
5378 if (brightness_mode
& 2) {
5379 lcmos
= (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
)
5380 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
5381 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
5382 lcmos
&= (tp_features
.bright_16levels
)? 0x0f : 0x07;
5386 if (brightness_mode
== 3) {
5387 *status
= lec
; /* Prefer EC, CMOS is just a backing store */
5388 lec
&= TP_EC_BACKLIGHT_LVLMSK
;
5390 tp_warned
.bright_cmos_ec_unsync
= 0;
5392 if (!tp_warned
.bright_cmos_ec_unsync
) {
5394 "CMOS NVRAM (%u) and EC (%u) do not "
5395 "agree on display brightness level\n",
5396 (unsigned int) lcmos
,
5397 (unsigned int) lec
);
5398 tp_warned
.bright_cmos_ec_unsync
= 1;
5409 /* May return EINTR which can always be mapped to ERESTARTSYS */
5410 static int brightness_set(int value
)
5412 int cmos_cmd
, inc
, i
, res
;
5416 if (value
> ((tp_features
.bright_16levels
)? 15 : 7) ||
5420 res
= mutex_lock_killable(&brightness_mutex
);
5424 res
= brightness_get_raw(¤t_value
);
5428 command_bits
= current_value
& TP_EC_BACKLIGHT_CMDMSK
;
5429 current_value
&= TP_EC_BACKLIGHT_LVLMSK
;
5431 cmos_cmd
= value
> current_value
?
5432 TP_CMOS_BRIGHTNESS_UP
:
5433 TP_CMOS_BRIGHTNESS_DOWN
;
5434 inc
= (value
> current_value
)? 1 : -1;
5437 for (i
= current_value
; i
!= value
; i
+= inc
) {
5438 if ((brightness_mode
& 2) &&
5439 issue_thinkpad_cmos_command(cmos_cmd
)) {
5443 if ((brightness_mode
& 1) &&
5444 !acpi_ec_write(TP_EC_BACKLIGHT
,
5445 (i
+ inc
) | command_bits
)) {
5452 mutex_unlock(&brightness_mutex
);
5456 /* sysfs backlight class ----------------------------------------------- */
5458 static int brightness_update_status(struct backlight_device
*bd
)
5460 /* it is the backlight class's job (caller) to handle
5461 * EINTR and other errors properly */
5462 return brightness_set(
5463 (bd
->props
.fb_blank
== FB_BLANK_UNBLANK
&&
5464 bd
->props
.power
== FB_BLANK_UNBLANK
) ?
5465 bd
->props
.brightness
: 0);
5468 static int brightness_get(struct backlight_device
*bd
)
5472 res
= brightness_get_raw(&status
);
5474 return 0; /* FIXME: teach backlight about error handling */
5476 return status
& TP_EC_BACKLIGHT_LVLMSK
;
5479 static struct backlight_ops ibm_backlight_data
= {
5480 .get_brightness
= brightness_get
,
5481 .update_status
= brightness_update_status
,
5484 /* --------------------------------------------------------------------- */
5486 static int __init
brightness_init(struct ibm_init_struct
*iibm
)
5490 vdbg_printk(TPACPI_DBG_INIT
, "initializing brightness subdriver\n");
5492 mutex_init(&brightness_mutex
);
5495 * We always attempt to detect acpi support, so as to switch
5496 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
5497 * going to publish a backlight interface
5499 b
= tpacpi_check_std_acpi_brightness_support();
5502 if (acpi_video_backlight_support()) {
5503 if (brightness_enable
> 1) {
5504 printk(TPACPI_NOTICE
5505 "Standard ACPI backlight interface "
5506 "available, not loading native one.\n");
5508 } else if (brightness_enable
== 1) {
5509 printk(TPACPI_NOTICE
5510 "Backlight control force enabled, even if standard "
5511 "ACPI backlight interface is available\n");
5514 if (brightness_enable
> 1) {
5515 printk(TPACPI_NOTICE
5516 "Standard ACPI backlight interface not "
5517 "available, thinkpad_acpi native "
5518 "brightness control enabled\n");
5523 if (!brightness_enable
) {
5524 dbg_printk(TPACPI_DBG_INIT
,
5525 "brightness support disabled by "
5526 "module parameter\n");
5532 "Unsupported brightness interface, "
5533 "please contact %s\n", TPACPI_MAIL
);
5537 tp_features
.bright_16levels
= 1;
5539 if (!brightness_mode
) {
5540 if (thinkpad_id
.vendor
== PCI_VENDOR_ID_LENOVO
)
5541 brightness_mode
= 2;
5543 brightness_mode
= 3;
5545 dbg_printk(TPACPI_DBG_INIT
, "selected brightness_mode=%d\n",
5549 if (brightness_mode
> 3)
5552 if (brightness_get_raw(&b
) < 0)
5555 if (tp_features
.bright_16levels
)
5557 "detected a 16-level brightness capable ThinkPad\n");
5559 ibm_backlight_device
= backlight_device_register(
5560 TPACPI_BACKLIGHT_DEV_NAME
, NULL
, NULL
,
5561 &ibm_backlight_data
);
5562 if (IS_ERR(ibm_backlight_device
)) {
5563 printk(TPACPI_ERR
"Could not register backlight device\n");
5564 return PTR_ERR(ibm_backlight_device
);
5566 vdbg_printk(TPACPI_DBG_INIT
, "brightness is supported\n");
5568 ibm_backlight_device
->props
.max_brightness
=
5569 (tp_features
.bright_16levels
)? 15 : 7;
5570 ibm_backlight_device
->props
.brightness
= b
& TP_EC_BACKLIGHT_LVLMSK
;
5571 backlight_update_status(ibm_backlight_device
);
5576 static void brightness_exit(void)
5578 if (ibm_backlight_device
) {
5579 vdbg_printk(TPACPI_DBG_EXIT
,
5580 "calling backlight_device_unregister()\n");
5581 backlight_device_unregister(ibm_backlight_device
);
5585 static int brightness_read(char *p
)
5590 level
= brightness_get(NULL
);
5592 len
+= sprintf(p
+ len
, "level:\t\tunreadable\n");
5594 len
+= sprintf(p
+ len
, "level:\t\t%d\n", level
);
5595 len
+= sprintf(p
+ len
, "commands:\tup, down\n");
5596 len
+= sprintf(p
+ len
, "commands:\tlevel <level>"
5597 " (<level> is 0-%d)\n",
5598 (tp_features
.bright_16levels
) ? 15 : 7);
5604 static int brightness_write(char *buf
)
5609 int max_level
= (tp_features
.bright_16levels
) ? 15 : 7;
5611 level
= brightness_get(NULL
);
5615 while ((cmd
= next_cmd(&buf
))) {
5616 if (strlencmp(cmd
, "up") == 0) {
5617 if (level
< max_level
)
5619 } else if (strlencmp(cmd
, "down") == 0) {
5622 } else if (sscanf(cmd
, "level %d", &level
) == 1 &&
5623 level
>= 0 && level
<= max_level
) {
5630 * Now we know what the final level should be, so we try to set it.
5631 * Doing it this way makes the syscall restartable in case of EINTR
5633 rc
= brightness_set(level
);
5634 return (rc
== -EINTR
)? ERESTARTSYS
: rc
;
5637 static struct ibm_struct brightness_driver_data
= {
5638 .name
= "brightness",
5639 .read
= brightness_read
,
5640 .write
= brightness_write
,
5641 .exit
= brightness_exit
,
5644 /*************************************************************************
5648 static int volume_offset
= 0x30;
5650 static int volume_read(char *p
)
5655 if (!acpi_ec_read(volume_offset
, &level
)) {
5656 len
+= sprintf(p
+ len
, "level:\t\tunreadable\n");
5658 len
+= sprintf(p
+ len
, "level:\t\t%d\n", level
& 0xf);
5659 len
+= sprintf(p
+ len
, "mute:\t\t%s\n", onoff(level
, 6));
5660 len
+= sprintf(p
+ len
, "commands:\tup, down, mute\n");
5661 len
+= sprintf(p
+ len
, "commands:\tlevel <level>"
5662 " (<level> is 0-15)\n");
5668 static int volume_write(char *buf
)
5670 int cmos_cmd
, inc
, i
;
5672 int new_level
, new_mute
;
5675 while ((cmd
= next_cmd(&buf
))) {
5676 if (!acpi_ec_read(volume_offset
, &level
))
5678 new_mute
= mute
= level
& 0x40;
5679 new_level
= level
= level
& 0xf;
5681 if (strlencmp(cmd
, "up") == 0) {
5685 new_level
= level
== 15 ? 15 : level
+ 1;
5686 } else if (strlencmp(cmd
, "down") == 0) {
5690 new_level
= level
== 0 ? 0 : level
- 1;
5691 } else if (sscanf(cmd
, "level %d", &new_level
) == 1 &&
5692 new_level
>= 0 && new_level
<= 15) {
5694 } else if (strlencmp(cmd
, "mute") == 0) {
5699 if (new_level
!= level
) {
5700 /* mute doesn't change */
5702 cmos_cmd
= (new_level
> level
) ?
5703 TP_CMOS_VOLUME_UP
: TP_CMOS_VOLUME_DOWN
;
5704 inc
= new_level
> level
? 1 : -1;
5706 if (mute
&& (issue_thinkpad_cmos_command(cmos_cmd
) ||
5707 !acpi_ec_write(volume_offset
, level
)))
5710 for (i
= level
; i
!= new_level
; i
+= inc
)
5711 if (issue_thinkpad_cmos_command(cmos_cmd
) ||
5712 !acpi_ec_write(volume_offset
, i
+ inc
))
5716 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE
) ||
5717 !acpi_ec_write(volume_offset
, new_level
+ mute
))) {
5722 if (new_mute
!= mute
) {
5723 /* level doesn't change */
5725 cmos_cmd
= (new_mute
) ?
5726 TP_CMOS_VOLUME_MUTE
: TP_CMOS_VOLUME_UP
;
5728 if (issue_thinkpad_cmos_command(cmos_cmd
) ||
5729 !acpi_ec_write(volume_offset
, level
+ new_mute
))
5737 static struct ibm_struct volume_driver_data
= {
5739 .read
= volume_read
,
5740 .write
= volume_write
,
5743 /*************************************************************************
5750 * TPACPI_FAN_RD_ACPI_GFAN:
5751 * ACPI GFAN method: returns fan level
5753 * see TPACPI_FAN_WR_ACPI_SFAN
5754 * EC 0x2f (HFSP) not available if GFAN exists
5756 * TPACPI_FAN_WR_ACPI_SFAN:
5757 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
5759 * EC 0x2f (HFSP) might be available *for reading*, but do not use
5762 * TPACPI_FAN_WR_TPEC:
5763 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
5764 * Supported on almost all ThinkPads
5766 * Fan speed changes of any sort (including those caused by the
5767 * disengaged mode) are usually done slowly by the firmware as the
5768 * maximum ammount of fan duty cycle change per second seems to be
5771 * Reading is not available if GFAN exists.
5772 * Writing is not available if SFAN exists.
5775 * 7 automatic mode engaged;
5776 * (default operation mode of the ThinkPad)
5777 * fan level is ignored in this mode.
5778 * 6 full speed mode (takes precedence over bit 7);
5779 * not available on all thinkpads. May disable
5780 * the tachometer while the fan controller ramps up
5781 * the speed (which can take up to a few *minutes*).
5782 * Speeds up fan to 100% duty-cycle, which is far above
5783 * the standard RPM levels. It is not impossible that
5784 * it could cause hardware damage.
5785 * 5-3 unused in some models. Extra bits for fan level
5786 * in others, but still useless as all values above
5787 * 7 map to the same speed as level 7 in these models.
5788 * 2-0 fan level (0..7 usually)
5790 * 0x07 = max (set when temperatures critical)
5791 * Some ThinkPads may have other levels, see
5792 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
5794 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
5795 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
5796 * does so, its initial value is meaningless (0x07).
5798 * For firmware bugs, refer to:
5799 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5803 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
5804 * Main fan tachometer reading (in RPM)
5806 * This register is present on all ThinkPads with a new-style EC, and
5807 * it is known not to be present on the A21m/e, and T22, as there is
5808 * something else in offset 0x84 according to the ACPI DSDT. Other
5809 * ThinkPads from this same time period (and earlier) probably lack the
5810 * tachometer as well.
5812 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
5813 * was never fixed by IBM to report the EC firmware version string
5814 * probably support the tachometer (like the early X models), so
5815 * detecting it is quite hard. We need more data to know for sure.
5817 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
5820 * FIRMWARE BUG: may go stale while the EC is switching to full speed
5823 * For firmware bugs, refer to:
5824 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5826 * TPACPI_FAN_WR_ACPI_FANS:
5827 * ThinkPad X31, X40, X41. Not available in the X60.
5829 * FANS ACPI handle: takes three arguments: low speed, medium speed,
5830 * high speed. ACPI DSDT seems to map these three speeds to levels
5831 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
5832 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
5834 * The speeds are stored on handles
5835 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
5837 * There are three default speed sets, acessible as handles:
5838 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
5840 * ACPI DSDT switches which set is in use depending on various
5843 * TPACPI_FAN_WR_TPEC is also available and should be used to
5844 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
5845 * but the ACPI tables just mention level 7.
5848 enum { /* Fan control constants */
5849 fan_status_offset
= 0x2f, /* EC register 0x2f */
5850 fan_rpm_offset
= 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
5851 * 0x84 must be read before 0x85 */
5853 TP_EC_FAN_FULLSPEED
= 0x40, /* EC fan mode: full speed */
5854 TP_EC_FAN_AUTO
= 0x80, /* EC fan mode: auto fan control */
5856 TPACPI_FAN_LAST_LEVEL
= 0x100, /* Use cached last-seen fan level */
5859 enum fan_status_access_mode
{
5860 TPACPI_FAN_NONE
= 0, /* No fan status or control */
5861 TPACPI_FAN_RD_ACPI_GFAN
, /* Use ACPI GFAN */
5862 TPACPI_FAN_RD_TPEC
, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
5865 enum fan_control_access_mode
{
5866 TPACPI_FAN_WR_NONE
= 0, /* No fan control */
5867 TPACPI_FAN_WR_ACPI_SFAN
, /* Use ACPI SFAN */
5868 TPACPI_FAN_WR_TPEC
, /* Use ACPI EC reg 0x2f */
5869 TPACPI_FAN_WR_ACPI_FANS
, /* Use ACPI FANS and EC reg 0x2f */
5872 enum fan_control_commands
{
5873 TPACPI_FAN_CMD_SPEED
= 0x0001, /* speed command */
5874 TPACPI_FAN_CMD_LEVEL
= 0x0002, /* level command */
5875 TPACPI_FAN_CMD_ENABLE
= 0x0004, /* enable/disable cmd,
5876 * and also watchdog cmd */
5879 static int fan_control_allowed
;
5881 static enum fan_status_access_mode fan_status_access_mode
;
5882 static enum fan_control_access_mode fan_control_access_mode
;
5883 static enum fan_control_commands fan_control_commands
;
5885 static u8 fan_control_initial_status
;
5886 static u8 fan_control_desired_level
;
5887 static u8 fan_control_resume_level
;
5888 static int fan_watchdog_maxinterval
;
5890 static struct mutex fan_mutex
;
5892 static void fan_watchdog_fire(struct work_struct
*ignored
);
5893 static DECLARE_DELAYED_WORK(fan_watchdog_task
, fan_watchdog_fire
);
5895 TPACPI_HANDLE(fans
, ec
, "FANS"); /* X31, X40, X41 */
5896 TPACPI_HANDLE(gfan
, ec
, "GFAN", /* 570 */
5897 "\\FSPD", /* 600e/x, 770e, 770x */
5899 TPACPI_HANDLE(sfan
, ec
, "SFAN", /* 570 */
5900 "JFNS", /* 770x-JL */
5904 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
5905 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
5906 * be in auto mode (0x80).
5908 * This is corrected by any write to HFSP either by the driver, or
5911 * We assume 0x07 really means auto mode while this quirk is active,
5912 * as this is far more likely than the ThinkPad being in level 7,
5913 * which is only used by the firmware during thermal emergencies.
5916 static void fan_quirk1_detect(void)
5918 /* In some ThinkPads, neither the EC nor the ACPI
5919 * DSDT initialize the HFSP register, and it ends up
5920 * being initially set to 0x07 when it *could* be
5921 * either 0x07 or 0x80.
5923 * Enable for TP-1Y (T43), TP-78 (R51e),
5924 * TP-76 (R52), TP-70 (T43, R52), which are known
5926 if (fan_control_initial_status
== 0x07) {
5927 switch (thinkpad_id
.ec_model
) {
5928 case 0x5931: /* TP-1Y */
5929 case 0x3837: /* TP-78 */
5930 case 0x3637: /* TP-76 */
5931 case 0x3037: /* TP-70 */
5932 printk(TPACPI_NOTICE
5933 "fan_init: initial fan status is unknown, "
5934 "assuming it is in auto mode\n");
5935 tp_features
.fan_ctrl_status_undef
= 1;
5941 static void fan_quirk1_handle(u8
*fan_status
)
5943 if (unlikely(tp_features
.fan_ctrl_status_undef
)) {
5944 if (*fan_status
!= fan_control_initial_status
) {
5945 /* something changed the HFSP regisnter since
5946 * driver init time, so it is not undefined
5948 tp_features
.fan_ctrl_status_undef
= 0;
5950 /* Return most likely status. In fact, it
5951 * might be the only possible status */
5952 *fan_status
= TP_EC_FAN_AUTO
;
5958 * Call with fan_mutex held
5960 static void fan_update_desired_level(u8 status
)
5963 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
5965 fan_control_desired_level
= 7;
5967 fan_control_desired_level
= status
;
5971 static int fan_get_status(u8
*status
)
5976 * Add TPACPI_FAN_RD_ACPI_FANS ? */
5978 switch (fan_status_access_mode
) {
5979 case TPACPI_FAN_RD_ACPI_GFAN
:
5980 /* 570, 600e/x, 770e, 770x */
5982 if (unlikely(!acpi_evalf(gfan_handle
, &s
, NULL
, "d")))
5990 case TPACPI_FAN_RD_TPEC
:
5991 /* all except 570, 600e/x, 770e, 770x */
5992 if (unlikely(!acpi_ec_read(fan_status_offset
, &s
)))
5995 if (likely(status
)) {
5997 fan_quirk1_handle(status
);
6009 static int fan_get_status_safe(u8
*status
)
6014 if (mutex_lock_killable(&fan_mutex
))
6015 return -ERESTARTSYS
;
6016 rc
= fan_get_status(&s
);
6018 fan_update_desired_level(s
);
6019 mutex_unlock(&fan_mutex
);
6027 static int fan_get_speed(unsigned int *speed
)
6031 switch (fan_status_access_mode
) {
6032 case TPACPI_FAN_RD_TPEC
:
6033 /* all except 570, 600e/x, 770e, 770x */
6034 if (unlikely(!acpi_ec_read(fan_rpm_offset
, &lo
) ||
6035 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
)))
6039 *speed
= (hi
<< 8) | lo
;
6050 static int fan_set_level(int level
)
6052 if (!fan_control_allowed
)
6055 switch (fan_control_access_mode
) {
6056 case TPACPI_FAN_WR_ACPI_SFAN
:
6057 if (level
>= 0 && level
<= 7) {
6058 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", level
))
6064 case TPACPI_FAN_WR_ACPI_FANS
:
6065 case TPACPI_FAN_WR_TPEC
:
6066 if (!(level
& TP_EC_FAN_AUTO
) &&
6067 !(level
& TP_EC_FAN_FULLSPEED
) &&
6068 ((level
< 0) || (level
> 7)))
6071 /* safety net should the EC not support AUTO
6072 * or FULLSPEED mode bits and just ignore them */
6073 if (level
& TP_EC_FAN_FULLSPEED
)
6074 level
|= 7; /* safety min speed 7 */
6075 else if (level
& TP_EC_FAN_AUTO
)
6076 level
|= 4; /* safety min speed 4 */
6078 if (!acpi_ec_write(fan_status_offset
, level
))
6081 tp_features
.fan_ctrl_status_undef
= 0;
6090 static int fan_set_level_safe(int level
)
6094 if (!fan_control_allowed
)
6097 if (mutex_lock_killable(&fan_mutex
))
6098 return -ERESTARTSYS
;
6100 if (level
== TPACPI_FAN_LAST_LEVEL
)
6101 level
= fan_control_desired_level
;
6103 rc
= fan_set_level(level
);
6105 fan_update_desired_level(level
);
6107 mutex_unlock(&fan_mutex
);
6111 static int fan_set_enable(void)
6116 if (!fan_control_allowed
)
6119 if (mutex_lock_killable(&fan_mutex
))
6120 return -ERESTARTSYS
;
6122 switch (fan_control_access_mode
) {
6123 case TPACPI_FAN_WR_ACPI_FANS
:
6124 case TPACPI_FAN_WR_TPEC
:
6125 rc
= fan_get_status(&s
);
6129 /* Don't go out of emergency fan mode */
6132 s
|= TP_EC_FAN_AUTO
| 4; /* min fan speed 4 */
6135 if (!acpi_ec_write(fan_status_offset
, s
))
6138 tp_features
.fan_ctrl_status_undef
= 0;
6143 case TPACPI_FAN_WR_ACPI_SFAN
:
6144 rc
= fan_get_status(&s
);
6150 /* Set fan to at least level 4 */
6153 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", s
))
6163 mutex_unlock(&fan_mutex
);
6167 static int fan_set_disable(void)
6171 if (!fan_control_allowed
)
6174 if (mutex_lock_killable(&fan_mutex
))
6175 return -ERESTARTSYS
;
6178 switch (fan_control_access_mode
) {
6179 case TPACPI_FAN_WR_ACPI_FANS
:
6180 case TPACPI_FAN_WR_TPEC
:
6181 if (!acpi_ec_write(fan_status_offset
, 0x00))
6184 fan_control_desired_level
= 0;
6185 tp_features
.fan_ctrl_status_undef
= 0;
6189 case TPACPI_FAN_WR_ACPI_SFAN
:
6190 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", 0x00))
6193 fan_control_desired_level
= 0;
6201 mutex_unlock(&fan_mutex
);
6205 static int fan_set_speed(int speed
)
6209 if (!fan_control_allowed
)
6212 if (mutex_lock_killable(&fan_mutex
))
6213 return -ERESTARTSYS
;
6216 switch (fan_control_access_mode
) {
6217 case TPACPI_FAN_WR_ACPI_FANS
:
6218 if (speed
>= 0 && speed
<= 65535) {
6219 if (!acpi_evalf(fans_handle
, NULL
, NULL
, "vddd",
6220 speed
, speed
, speed
))
6230 mutex_unlock(&fan_mutex
);
6234 static void fan_watchdog_reset(void)
6236 static int fan_watchdog_active
;
6238 if (fan_control_access_mode
== TPACPI_FAN_WR_NONE
)
6241 if (fan_watchdog_active
)
6242 cancel_delayed_work(&fan_watchdog_task
);
6244 if (fan_watchdog_maxinterval
> 0 &&
6245 tpacpi_lifecycle
!= TPACPI_LIFE_EXITING
) {
6246 fan_watchdog_active
= 1;
6247 if (!queue_delayed_work(tpacpi_wq
, &fan_watchdog_task
,
6248 msecs_to_jiffies(fan_watchdog_maxinterval
6251 "failed to queue the fan watchdog, "
6252 "watchdog will not trigger\n");
6255 fan_watchdog_active
= 0;
6258 static void fan_watchdog_fire(struct work_struct
*ignored
)
6262 if (tpacpi_lifecycle
!= TPACPI_LIFE_RUNNING
)
6265 printk(TPACPI_NOTICE
"fan watchdog: enabling fan\n");
6266 rc
= fan_set_enable();
6268 printk(TPACPI_ERR
"fan watchdog: error %d while enabling fan, "
6269 "will try again later...\n", -rc
);
6270 /* reschedule for later */
6271 fan_watchdog_reset();
6276 * SYSFS fan layout: hwmon compatible (device)
6279 * 0: "disengaged" mode
6281 * 2: native EC "auto" mode (recommended, hardware default)
6283 * pwm*: set speed in manual mode, ignored otherwise.
6284 * 0 is level 0; 255 is level 7. Intermediate points done with linear
6287 * fan*_input: tachometer reading, RPM
6290 * SYSFS fan layout: extensions
6292 * fan_watchdog (driver):
6293 * fan watchdog interval in seconds, 0 disables (default), max 120
6296 /* sysfs fan pwm1_enable ----------------------------------------------- */
6297 static ssize_t
fan_pwm1_enable_show(struct device
*dev
,
6298 struct device_attribute
*attr
,
6304 res
= fan_get_status_safe(&status
);
6308 if (status
& TP_EC_FAN_FULLSPEED
) {
6310 } else if (status
& TP_EC_FAN_AUTO
) {
6315 return snprintf(buf
, PAGE_SIZE
, "%d\n", mode
);
6318 static ssize_t
fan_pwm1_enable_store(struct device
*dev
,
6319 struct device_attribute
*attr
,
6320 const char *buf
, size_t count
)
6325 if (parse_strtoul(buf
, 2, &t
))
6330 level
= TP_EC_FAN_FULLSPEED
;
6333 level
= TPACPI_FAN_LAST_LEVEL
;
6336 level
= TP_EC_FAN_AUTO
;
6339 /* reserved for software-controlled auto mode */
6345 res
= fan_set_level_safe(level
);
6351 fan_watchdog_reset();
6356 static struct device_attribute dev_attr_fan_pwm1_enable
=
6357 __ATTR(pwm1_enable
, S_IWUSR
| S_IRUGO
,
6358 fan_pwm1_enable_show
, fan_pwm1_enable_store
);
6360 /* sysfs fan pwm1 ------------------------------------------------------ */
6361 static ssize_t
fan_pwm1_show(struct device
*dev
,
6362 struct device_attribute
*attr
,
6368 res
= fan_get_status_safe(&status
);
6373 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) != 0)
6374 status
= fan_control_desired_level
;
6379 return snprintf(buf
, PAGE_SIZE
, "%u\n", (status
* 255) / 7);
6382 static ssize_t
fan_pwm1_store(struct device
*dev
,
6383 struct device_attribute
*attr
,
6384 const char *buf
, size_t count
)
6388 u8 status
, newlevel
;
6390 if (parse_strtoul(buf
, 255, &s
))
6393 /* scale down from 0-255 to 0-7 */
6394 newlevel
= (s
>> 5) & 0x07;
6396 if (mutex_lock_killable(&fan_mutex
))
6397 return -ERESTARTSYS
;
6399 rc
= fan_get_status(&status
);
6400 if (!rc
&& (status
&
6401 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
6402 rc
= fan_set_level(newlevel
);
6406 fan_update_desired_level(newlevel
);
6407 fan_watchdog_reset();
6411 mutex_unlock(&fan_mutex
);
6412 return (rc
)? rc
: count
;
6415 static struct device_attribute dev_attr_fan_pwm1
=
6416 __ATTR(pwm1
, S_IWUSR
| S_IRUGO
,
6417 fan_pwm1_show
, fan_pwm1_store
);
6419 /* sysfs fan fan1_input ------------------------------------------------ */
6420 static ssize_t
fan_fan1_input_show(struct device
*dev
,
6421 struct device_attribute
*attr
,
6427 res
= fan_get_speed(&speed
);
6431 return snprintf(buf
, PAGE_SIZE
, "%u\n", speed
);
6434 static struct device_attribute dev_attr_fan_fan1_input
=
6435 __ATTR(fan1_input
, S_IRUGO
,
6436 fan_fan1_input_show
, NULL
);
6438 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
6439 static ssize_t
fan_fan_watchdog_show(struct device_driver
*drv
,
6442 return snprintf(buf
, PAGE_SIZE
, "%u\n", fan_watchdog_maxinterval
);
6445 static ssize_t
fan_fan_watchdog_store(struct device_driver
*drv
,
6446 const char *buf
, size_t count
)
6450 if (parse_strtoul(buf
, 120, &t
))
6453 if (!fan_control_allowed
)
6456 fan_watchdog_maxinterval
= t
;
6457 fan_watchdog_reset();
6462 static DRIVER_ATTR(fan_watchdog
, S_IWUSR
| S_IRUGO
,
6463 fan_fan_watchdog_show
, fan_fan_watchdog_store
);
6465 /* --------------------------------------------------------------------- */
6466 static struct attribute
*fan_attributes
[] = {
6467 &dev_attr_fan_pwm1_enable
.attr
, &dev_attr_fan_pwm1
.attr
,
6468 &dev_attr_fan_fan1_input
.attr
,
6472 static const struct attribute_group fan_attr_group
= {
6473 .attrs
= fan_attributes
,
6476 static int __init
fan_init(struct ibm_init_struct
*iibm
)
6480 vdbg_printk(TPACPI_DBG_INIT
, "initializing fan subdriver\n");
6482 mutex_init(&fan_mutex
);
6483 fan_status_access_mode
= TPACPI_FAN_NONE
;
6484 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
6485 fan_control_commands
= 0;
6486 fan_watchdog_maxinterval
= 0;
6487 tp_features
.fan_ctrl_status_undef
= 0;
6488 fan_control_desired_level
= 7;
6490 TPACPI_ACPIHANDLE_INIT(fans
);
6491 TPACPI_ACPIHANDLE_INIT(gfan
);
6492 TPACPI_ACPIHANDLE_INIT(sfan
);
6495 /* 570, 600e/x, 770e, 770x */
6496 fan_status_access_mode
= TPACPI_FAN_RD_ACPI_GFAN
;
6498 /* all other ThinkPads: note that even old-style
6499 * ThinkPad ECs supports the fan control register */
6500 if (likely(acpi_ec_read(fan_status_offset
,
6501 &fan_control_initial_status
))) {
6502 fan_status_access_mode
= TPACPI_FAN_RD_TPEC
;
6503 fan_quirk1_detect();
6506 "ThinkPad ACPI EC access misbehaving, "
6507 "fan status and control unavailable\n");
6514 fan_control_access_mode
= TPACPI_FAN_WR_ACPI_SFAN
;
6515 fan_control_commands
|=
6516 TPACPI_FAN_CMD_LEVEL
| TPACPI_FAN_CMD_ENABLE
;
6519 /* gfan without sfan means no fan control */
6520 /* all other models implement TP EC 0x2f control */
6524 fan_control_access_mode
=
6525 TPACPI_FAN_WR_ACPI_FANS
;
6526 fan_control_commands
|=
6527 TPACPI_FAN_CMD_SPEED
|
6528 TPACPI_FAN_CMD_LEVEL
|
6529 TPACPI_FAN_CMD_ENABLE
;
6531 fan_control_access_mode
= TPACPI_FAN_WR_TPEC
;
6532 fan_control_commands
|=
6533 TPACPI_FAN_CMD_LEVEL
|
6534 TPACPI_FAN_CMD_ENABLE
;
6539 vdbg_printk(TPACPI_DBG_INIT
, "fan is %s, modes %d, %d\n",
6540 str_supported(fan_status_access_mode
!= TPACPI_FAN_NONE
||
6541 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
),
6542 fan_status_access_mode
, fan_control_access_mode
);
6544 /* fan control master switch */
6545 if (!fan_control_allowed
) {
6546 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
6547 fan_control_commands
= 0;
6548 dbg_printk(TPACPI_DBG_INIT
,
6549 "fan control features disabled by parameter\n");
6552 /* update fan_control_desired_level */
6553 if (fan_status_access_mode
!= TPACPI_FAN_NONE
)
6554 fan_get_status_safe(NULL
);
6556 if (fan_status_access_mode
!= TPACPI_FAN_NONE
||
6557 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
) {
6558 rc
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
6563 rc
= driver_create_file(&tpacpi_hwmon_pdriver
.driver
,
6564 &driver_attr_fan_watchdog
);
6566 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
6575 static void fan_exit(void)
6577 vdbg_printk(TPACPI_DBG_EXIT
,
6578 "cancelling any pending fan watchdog tasks\n");
6580 /* FIXME: can we really do this unconditionally? */
6581 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
, &fan_attr_group
);
6582 driver_remove_file(&tpacpi_hwmon_pdriver
.driver
,
6583 &driver_attr_fan_watchdog
);
6585 cancel_delayed_work(&fan_watchdog_task
);
6586 flush_workqueue(tpacpi_wq
);
6589 static void fan_suspend(pm_message_t state
)
6593 if (!fan_control_allowed
)
6596 /* Store fan status in cache */
6597 fan_control_resume_level
= 0;
6598 rc
= fan_get_status_safe(&fan_control_resume_level
);
6600 printk(TPACPI_NOTICE
6601 "failed to read fan level for later "
6602 "restore during resume: %d\n", rc
);
6604 /* if it is undefined, don't attempt to restore it.
6606 if (tp_features
.fan_ctrl_status_undef
)
6607 fan_control_resume_level
= 0;
6610 static void fan_resume(void)
6612 u8 current_level
= 7;
6613 bool do_set
= false;
6616 /* DSDT *always* updates status on resume */
6617 tp_features
.fan_ctrl_status_undef
= 0;
6619 if (!fan_control_allowed
||
6620 !fan_control_resume_level
||
6621 (fan_get_status_safe(¤t_level
) < 0))
6624 switch (fan_control_access_mode
) {
6625 case TPACPI_FAN_WR_ACPI_SFAN
:
6626 /* never decrease fan level */
6627 do_set
= (fan_control_resume_level
> current_level
);
6629 case TPACPI_FAN_WR_ACPI_FANS
:
6630 case TPACPI_FAN_WR_TPEC
:
6631 /* never decrease fan level, scale is:
6632 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
6634 * We expect the firmware to set either 7 or AUTO, but we
6635 * handle FULLSPEED out of paranoia.
6637 * So, we can safely only restore FULLSPEED or 7, anything
6638 * else could slow the fan. Restoring AUTO is useless, at
6639 * best that's exactly what the DSDT already set (it is the
6642 * Always keep in mind that the DSDT *will* have set the
6643 * fans to what the vendor supposes is the best level. We
6644 * muck with it only to speed the fan up.
6646 if (fan_control_resume_level
!= 7 &&
6647 !(fan_control_resume_level
& TP_EC_FAN_FULLSPEED
))
6650 do_set
= !(current_level
& TP_EC_FAN_FULLSPEED
) &&
6651 (current_level
!= fan_control_resume_level
);
6657 printk(TPACPI_NOTICE
6658 "restoring fan level to 0x%02x\n",
6659 fan_control_resume_level
);
6660 rc
= fan_set_level_safe(fan_control_resume_level
);
6662 printk(TPACPI_NOTICE
6663 "failed to restore fan level: %d\n", rc
);
6667 static int fan_read(char *p
)
6672 unsigned int speed
= 0;
6674 switch (fan_status_access_mode
) {
6675 case TPACPI_FAN_RD_ACPI_GFAN
:
6676 /* 570, 600e/x, 770e, 770x */
6677 rc
= fan_get_status_safe(&status
);
6681 len
+= sprintf(p
+ len
, "status:\t\t%s\n"
6683 (status
!= 0) ? "enabled" : "disabled", status
);
6686 case TPACPI_FAN_RD_TPEC
:
6687 /* all except 570, 600e/x, 770e, 770x */
6688 rc
= fan_get_status_safe(&status
);
6692 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
6693 (status
!= 0) ? "enabled" : "disabled");
6695 rc
= fan_get_speed(&speed
);
6699 len
+= sprintf(p
+ len
, "speed:\t\t%d\n", speed
);
6701 if (status
& TP_EC_FAN_FULLSPEED
)
6702 /* Disengaged mode takes precedence */
6703 len
+= sprintf(p
+ len
, "level:\t\tdisengaged\n");
6704 else if (status
& TP_EC_FAN_AUTO
)
6705 len
+= sprintf(p
+ len
, "level:\t\tauto\n");
6707 len
+= sprintf(p
+ len
, "level:\t\t%d\n", status
);
6710 case TPACPI_FAN_NONE
:
6712 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
6715 if (fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) {
6716 len
+= sprintf(p
+ len
, "commands:\tlevel <level>");
6718 switch (fan_control_access_mode
) {
6719 case TPACPI_FAN_WR_ACPI_SFAN
:
6720 len
+= sprintf(p
+ len
, " (<level> is 0-7)\n");
6724 len
+= sprintf(p
+ len
, " (<level> is 0-7, "
6725 "auto, disengaged, full-speed)\n");
6730 if (fan_control_commands
& TPACPI_FAN_CMD_ENABLE
)
6731 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n"
6732 "commands:\twatchdog <timeout> (<timeout> "
6733 "is 0 (off), 1-120 (seconds))\n");
6735 if (fan_control_commands
& TPACPI_FAN_CMD_SPEED
)
6736 len
+= sprintf(p
+ len
, "commands:\tspeed <speed>"
6737 " (<speed> is 0-65535)\n");
6742 static int fan_write_cmd_level(const char *cmd
, int *rc
)
6746 if (strlencmp(cmd
, "level auto") == 0)
6747 level
= TP_EC_FAN_AUTO
;
6748 else if ((strlencmp(cmd
, "level disengaged") == 0) |
6749 (strlencmp(cmd
, "level full-speed") == 0))
6750 level
= TP_EC_FAN_FULLSPEED
;
6751 else if (sscanf(cmd
, "level %d", &level
) != 1)
6754 *rc
= fan_set_level_safe(level
);
6756 printk(TPACPI_ERR
"level command accepted for unsupported "
6757 "access mode %d", fan_control_access_mode
);
6762 static int fan_write_cmd_enable(const char *cmd
, int *rc
)
6764 if (strlencmp(cmd
, "enable") != 0)
6767 *rc
= fan_set_enable();
6769 printk(TPACPI_ERR
"enable command accepted for unsupported "
6770 "access mode %d", fan_control_access_mode
);
6775 static int fan_write_cmd_disable(const char *cmd
, int *rc
)
6777 if (strlencmp(cmd
, "disable") != 0)
6780 *rc
= fan_set_disable();
6782 printk(TPACPI_ERR
"disable command accepted for unsupported "
6783 "access mode %d", fan_control_access_mode
);
6788 static int fan_write_cmd_speed(const char *cmd
, int *rc
)
6793 * Support speed <low> <medium> <high> ? */
6795 if (sscanf(cmd
, "speed %d", &speed
) != 1)
6798 *rc
= fan_set_speed(speed
);
6800 printk(TPACPI_ERR
"speed command accepted for unsupported "
6801 "access mode %d", fan_control_access_mode
);
6806 static int fan_write_cmd_watchdog(const char *cmd
, int *rc
)
6810 if (sscanf(cmd
, "watchdog %d", &interval
) != 1)
6813 if (interval
< 0 || interval
> 120)
6816 fan_watchdog_maxinterval
= interval
;
6821 static int fan_write(char *buf
)
6826 while (!rc
&& (cmd
= next_cmd(&buf
))) {
6827 if (!((fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) &&
6828 fan_write_cmd_level(cmd
, &rc
)) &&
6829 !((fan_control_commands
& TPACPI_FAN_CMD_ENABLE
) &&
6830 (fan_write_cmd_enable(cmd
, &rc
) ||
6831 fan_write_cmd_disable(cmd
, &rc
) ||
6832 fan_write_cmd_watchdog(cmd
, &rc
))) &&
6833 !((fan_control_commands
& TPACPI_FAN_CMD_SPEED
) &&
6834 fan_write_cmd_speed(cmd
, &rc
))
6838 fan_watchdog_reset();
6844 static struct ibm_struct fan_driver_data
= {
6849 .suspend
= fan_suspend
,
6850 .resume
= fan_resume
,
6853 /****************************************************************************
6854 ****************************************************************************
6858 ****************************************************************************
6859 ****************************************************************************/
6861 /* sysfs name ---------------------------------------------------------- */
6862 static ssize_t
thinkpad_acpi_pdev_name_show(struct device
*dev
,
6863 struct device_attribute
*attr
,
6866 return snprintf(buf
, PAGE_SIZE
, "%s\n", TPACPI_NAME
);
6869 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name
=
6870 __ATTR(name
, S_IRUGO
, thinkpad_acpi_pdev_name_show
, NULL
);
6872 /* --------------------------------------------------------------------- */
6875 static struct proc_dir_entry
*proc_dir
;
6878 * Module and infrastructure proble, init and exit handling
6881 static int force_load
;
6883 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
6884 static const char * __init
str_supported(int is_supported
)
6886 static char text_unsupported
[] __initdata
= "not supported";
6888 return (is_supported
)? &text_unsupported
[4] : &text_unsupported
[0];
6890 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
6892 static void ibm_exit(struct ibm_struct
*ibm
)
6894 dbg_printk(TPACPI_DBG_EXIT
, "removing %s\n", ibm
->name
);
6896 list_del_init(&ibm
->all_drivers
);
6898 if (ibm
->flags
.acpi_notify_installed
) {
6899 dbg_printk(TPACPI_DBG_EXIT
,
6900 "%s: acpi_remove_notify_handler\n", ibm
->name
);
6902 acpi_remove_notify_handler(*ibm
->acpi
->handle
,
6904 dispatch_acpi_notify
);
6905 ibm
->flags
.acpi_notify_installed
= 0;
6906 ibm
->flags
.acpi_notify_installed
= 0;
6909 if (ibm
->flags
.proc_created
) {
6910 dbg_printk(TPACPI_DBG_EXIT
,
6911 "%s: remove_proc_entry\n", ibm
->name
);
6912 remove_proc_entry(ibm
->name
, proc_dir
);
6913 ibm
->flags
.proc_created
= 0;
6916 if (ibm
->flags
.acpi_driver_registered
) {
6917 dbg_printk(TPACPI_DBG_EXIT
,
6918 "%s: acpi_bus_unregister_driver\n", ibm
->name
);
6920 acpi_bus_unregister_driver(ibm
->acpi
->driver
);
6921 kfree(ibm
->acpi
->driver
);
6922 ibm
->acpi
->driver
= NULL
;
6923 ibm
->flags
.acpi_driver_registered
= 0;
6926 if (ibm
->flags
.init_called
&& ibm
->exit
) {
6928 ibm
->flags
.init_called
= 0;
6931 dbg_printk(TPACPI_DBG_INIT
, "finished removing %s\n", ibm
->name
);
6934 static int __init
ibm_init(struct ibm_init_struct
*iibm
)
6937 struct ibm_struct
*ibm
= iibm
->data
;
6938 struct proc_dir_entry
*entry
;
6940 BUG_ON(ibm
== NULL
);
6942 INIT_LIST_HEAD(&ibm
->all_drivers
);
6944 if (ibm
->flags
.experimental
&& !experimental
)
6947 dbg_printk(TPACPI_DBG_INIT
,
6948 "probing for %s\n", ibm
->name
);
6951 ret
= iibm
->init(iibm
);
6953 return 0; /* probe failed */
6957 ibm
->flags
.init_called
= 1;
6961 if (ibm
->acpi
->hid
) {
6962 ret
= register_tpacpi_subdriver(ibm
);
6967 if (ibm
->acpi
->notify
) {
6968 ret
= setup_acpi_notify(ibm
);
6969 if (ret
== -ENODEV
) {
6970 printk(TPACPI_NOTICE
"disabling subdriver %s\n",
6980 dbg_printk(TPACPI_DBG_INIT
,
6981 "%s installed\n", ibm
->name
);
6984 entry
= create_proc_entry(ibm
->name
,
6985 S_IFREG
| S_IRUGO
| S_IWUSR
,
6988 printk(TPACPI_ERR
"unable to create proc entry %s\n",
6993 entry
->owner
= THIS_MODULE
;
6995 entry
->read_proc
= &dispatch_procfs_read
;
6997 entry
->write_proc
= &dispatch_procfs_write
;
6998 ibm
->flags
.proc_created
= 1;
7001 list_add_tail(&ibm
->all_drivers
, &tpacpi_all_drivers
);
7006 dbg_printk(TPACPI_DBG_INIT
,
7007 "%s: at error exit path with result %d\n",
7011 return (ret
< 0)? ret
: 0;
7016 /* returns 0 - probe ok, or < 0 - probe error.
7017 * Probe ok doesn't mean thinkpad found.
7018 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
7019 static int __must_check __init
get_thinkpad_model_data(
7020 struct thinkpad_id_data
*tp
)
7022 const struct dmi_device
*dev
= NULL
;
7023 char ec_fw_string
[18];
7029 memset(tp
, 0, sizeof(*tp
));
7031 if (dmi_name_in_vendors("IBM"))
7032 tp
->vendor
= PCI_VENDOR_ID_IBM
;
7033 else if (dmi_name_in_vendors("LENOVO"))
7034 tp
->vendor
= PCI_VENDOR_ID_LENOVO
;
7038 s
= dmi_get_system_info(DMI_BIOS_VERSION
);
7039 tp
->bios_version_str
= kstrdup(s
, GFP_KERNEL
);
7040 if (s
&& !tp
->bios_version_str
)
7042 if (!tp
->bios_version_str
)
7044 tp
->bios_model
= tp
->bios_version_str
[0]
7045 | (tp
->bios_version_str
[1] << 8);
7048 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
7049 * X32 or newer, all Z series; Some models must have an
7050 * up-to-date BIOS or they will not be detected.
7052 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7054 while ((dev
= dmi_find_device(DMI_DEV_TYPE_OEM_STRING
, NULL
, dev
))) {
7055 if (sscanf(dev
->name
,
7056 "IBM ThinkPad Embedded Controller -[%17c",
7057 ec_fw_string
) == 1) {
7058 ec_fw_string
[sizeof(ec_fw_string
) - 1] = 0;
7059 ec_fw_string
[strcspn(ec_fw_string
, " ]")] = 0;
7061 tp
->ec_version_str
= kstrdup(ec_fw_string
, GFP_KERNEL
);
7062 if (!tp
->ec_version_str
)
7064 tp
->ec_model
= ec_fw_string
[0]
7065 | (ec_fw_string
[1] << 8);
7070 s
= dmi_get_system_info(DMI_PRODUCT_VERSION
);
7071 if (s
&& !strnicmp(s
, "ThinkPad", 8)) {
7072 tp
->model_str
= kstrdup(s
, GFP_KERNEL
);
7077 s
= dmi_get_system_info(DMI_PRODUCT_NAME
);
7078 tp
->nummodel_str
= kstrdup(s
, GFP_KERNEL
);
7079 if (s
&& !tp
->nummodel_str
)
7085 static int __init
probe_for_thinkpad(void)
7093 * Non-ancient models have better DMI tagging, but very old models
7096 is_thinkpad
= (thinkpad_id
.model_str
!= NULL
);
7098 /* ec is required because many other handles are relative to it */
7099 TPACPI_ACPIHANDLE_INIT(ec
);
7103 "Not yet supported ThinkPad detected!\n");
7108 * Risks a regression on very old machines, but reduces potential
7109 * false positives a damn great deal
7112 is_thinkpad
= (thinkpad_id
.vendor
== PCI_VENDOR_ID_IBM
);
7114 if (!is_thinkpad
&& !force_load
)
7121 /* Module init, exit, parameters */
7123 static struct ibm_init_struct ibms_init
[] __initdata
= {
7125 .init
= thinkpad_acpi_driver_init
,
7126 .data
= &thinkpad_acpi_driver_data
,
7129 .init
= hotkey_init
,
7130 .data
= &hotkey_driver_data
,
7133 .init
= bluetooth_init
,
7134 .data
= &bluetooth_driver_data
,
7138 .data
= &wan_driver_data
,
7142 .data
= &uwb_driver_data
,
7144 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
7147 .data
= &video_driver_data
,
7152 .data
= &light_driver_data
,
7154 #ifdef CONFIG_THINKPAD_ACPI_DOCK
7157 .data
= &dock_driver_data
[0],
7161 .data
= &dock_driver_data
[1],
7164 #ifdef CONFIG_THINKPAD_ACPI_BAY
7167 .data
= &bay_driver_data
,
7172 .data
= &cmos_driver_data
,
7176 .data
= &led_driver_data
,
7180 .data
= &beep_driver_data
,
7183 .init
= thermal_init
,
7184 .data
= &thermal_driver_data
,
7187 .data
= &ecdump_driver_data
,
7190 .init
= brightness_init
,
7191 .data
= &brightness_driver_data
,
7194 .data
= &volume_driver_data
,
7198 .data
= &fan_driver_data
,
7202 static int __init
set_ibm_param(const char *val
, struct kernel_param
*kp
)
7205 struct ibm_struct
*ibm
;
7207 if (!kp
|| !kp
->name
|| !val
)
7210 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
7211 ibm
= ibms_init
[i
].data
;
7212 WARN_ON(ibm
== NULL
);
7214 if (!ibm
|| !ibm
->name
)
7217 if (strcmp(ibm
->name
, kp
->name
) == 0 && ibm
->write
) {
7218 if (strlen(val
) > sizeof(ibms_init
[i
].param
) - 2)
7220 strcpy(ibms_init
[i
].param
, val
);
7221 strcat(ibms_init
[i
].param
, ",");
7229 module_param(experimental
, int, 0);
7230 MODULE_PARM_DESC(experimental
,
7231 "Enables experimental features when non-zero");
7233 module_param_named(debug
, dbg_level
, uint
, 0);
7234 MODULE_PARM_DESC(debug
, "Sets debug level bit-mask");
7236 module_param(force_load
, bool, 0);
7237 MODULE_PARM_DESC(force_load
,
7238 "Attempts to load the driver even on a "
7239 "mis-identified ThinkPad when true");
7241 module_param_named(fan_control
, fan_control_allowed
, bool, 0);
7242 MODULE_PARM_DESC(fan_control
,
7243 "Enables setting fan parameters features when true");
7245 module_param_named(brightness_mode
, brightness_mode
, int, 0);
7246 MODULE_PARM_DESC(brightness_mode
,
7247 "Selects brightness control strategy: "
7248 "0=auto, 1=EC, 2=CMOS, 3=both");
7250 module_param(brightness_enable
, uint
, 0);
7251 MODULE_PARM_DESC(brightness_enable
,
7252 "Enables backlight control when 1, disables when 0");
7254 module_param(hotkey_report_mode
, uint
, 0);
7255 MODULE_PARM_DESC(hotkey_report_mode
,
7256 "used for backwards compatibility with userspace, "
7257 "see documentation");
7259 #define TPACPI_PARAM(feature) \
7260 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
7261 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
7262 "at module load, see documentation")
7264 TPACPI_PARAM(hotkey
);
7265 TPACPI_PARAM(bluetooth
);
7266 TPACPI_PARAM(video
);
7267 TPACPI_PARAM(light
);
7268 #ifdef CONFIG_THINKPAD_ACPI_DOCK
7271 #ifdef CONFIG_THINKPAD_ACPI_BAY
7273 #endif /* CONFIG_THINKPAD_ACPI_BAY */
7277 TPACPI_PARAM(ecdump
);
7278 TPACPI_PARAM(brightness
);
7279 TPACPI_PARAM(volume
);
7282 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
7283 module_param(dbg_wlswemul
, uint
, 0);
7284 MODULE_PARM_DESC(dbg_wlswemul
, "Enables WLSW emulation");
7285 module_param_named(wlsw_state
, tpacpi_wlsw_emulstate
, bool, 0);
7286 MODULE_PARM_DESC(wlsw_state
,
7287 "Initial state of the emulated WLSW switch");
7289 module_param(dbg_bluetoothemul
, uint
, 0);
7290 MODULE_PARM_DESC(dbg_bluetoothemul
, "Enables bluetooth switch emulation");
7291 module_param_named(bluetooth_state
, tpacpi_bluetooth_emulstate
, bool, 0);
7292 MODULE_PARM_DESC(bluetooth_state
,
7293 "Initial state of the emulated bluetooth switch");
7295 module_param(dbg_wwanemul
, uint
, 0);
7296 MODULE_PARM_DESC(dbg_wwanemul
, "Enables WWAN switch emulation");
7297 module_param_named(wwan_state
, tpacpi_wwan_emulstate
, bool, 0);
7298 MODULE_PARM_DESC(wwan_state
,
7299 "Initial state of the emulated WWAN switch");
7301 module_param(dbg_uwbemul
, uint
, 0);
7302 MODULE_PARM_DESC(dbg_uwbemul
, "Enables UWB switch emulation");
7303 module_param_named(uwb_state
, tpacpi_uwb_emulstate
, bool, 0);
7304 MODULE_PARM_DESC(uwb_state
,
7305 "Initial state of the emulated UWB switch");
7308 static void thinkpad_acpi_module_exit(void)
7310 struct ibm_struct
*ibm
, *itmp
;
7312 tpacpi_lifecycle
= TPACPI_LIFE_EXITING
;
7314 list_for_each_entry_safe_reverse(ibm
, itmp
,
7315 &tpacpi_all_drivers
,
7320 dbg_printk(TPACPI_DBG_INIT
, "finished subdriver exit path...\n");
7322 if (tpacpi_inputdev
) {
7323 if (tp_features
.input_device_registered
)
7324 input_unregister_device(tpacpi_inputdev
);
7326 input_free_device(tpacpi_inputdev
);
7330 hwmon_device_unregister(tpacpi_hwmon
);
7332 if (tp_features
.sensors_pdev_attrs_registered
)
7333 device_remove_file(&tpacpi_sensors_pdev
->dev
,
7334 &dev_attr_thinkpad_acpi_pdev_name
);
7335 if (tpacpi_sensors_pdev
)
7336 platform_device_unregister(tpacpi_sensors_pdev
);
7338 platform_device_unregister(tpacpi_pdev
);
7340 if (tp_features
.sensors_pdrv_attrs_registered
)
7341 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver
.driver
);
7342 if (tp_features
.platform_drv_attrs_registered
)
7343 tpacpi_remove_driver_attributes(&tpacpi_pdriver
.driver
);
7345 if (tp_features
.sensors_pdrv_registered
)
7346 platform_driver_unregister(&tpacpi_hwmon_pdriver
);
7348 if (tp_features
.platform_drv_registered
)
7349 platform_driver_unregister(&tpacpi_pdriver
);
7352 remove_proc_entry(TPACPI_PROC_DIR
, acpi_root_dir
);
7355 destroy_workqueue(tpacpi_wq
);
7357 kfree(thinkpad_id
.bios_version_str
);
7358 kfree(thinkpad_id
.ec_version_str
);
7359 kfree(thinkpad_id
.model_str
);
7363 static int __init
thinkpad_acpi_module_init(void)
7367 tpacpi_lifecycle
= TPACPI_LIFE_INIT
;
7369 /* Parameter checking */
7370 if (hotkey_report_mode
> 2)
7373 /* Driver-level probe */
7375 ret
= get_thinkpad_model_data(&thinkpad_id
);
7378 "unable to get DMI data: %d\n", ret
);
7379 thinkpad_acpi_module_exit();
7382 ret
= probe_for_thinkpad();
7384 thinkpad_acpi_module_exit();
7388 /* Driver initialization */
7390 TPACPI_ACPIHANDLE_INIT(ecrd
);
7391 TPACPI_ACPIHANDLE_INIT(ecwr
);
7393 tpacpi_wq
= create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME
);
7395 thinkpad_acpi_module_exit();
7399 proc_dir
= proc_mkdir(TPACPI_PROC_DIR
, acpi_root_dir
);
7402 "unable to create proc dir " TPACPI_PROC_DIR
);
7403 thinkpad_acpi_module_exit();
7406 proc_dir
->owner
= THIS_MODULE
;
7408 ret
= platform_driver_register(&tpacpi_pdriver
);
7411 "unable to register main platform driver\n");
7412 thinkpad_acpi_module_exit();
7415 tp_features
.platform_drv_registered
= 1;
7417 ret
= platform_driver_register(&tpacpi_hwmon_pdriver
);
7420 "unable to register hwmon platform driver\n");
7421 thinkpad_acpi_module_exit();
7424 tp_features
.sensors_pdrv_registered
= 1;
7426 ret
= tpacpi_create_driver_attributes(&tpacpi_pdriver
.driver
);
7428 tp_features
.platform_drv_attrs_registered
= 1;
7429 ret
= tpacpi_create_driver_attributes(
7430 &tpacpi_hwmon_pdriver
.driver
);
7434 "unable to create sysfs driver attributes\n");
7435 thinkpad_acpi_module_exit();
7438 tp_features
.sensors_pdrv_attrs_registered
= 1;
7441 /* Device initialization */
7442 tpacpi_pdev
= platform_device_register_simple(TPACPI_DRVR_NAME
, -1,
7444 if (IS_ERR(tpacpi_pdev
)) {
7445 ret
= PTR_ERR(tpacpi_pdev
);
7447 printk(TPACPI_ERR
"unable to register platform device\n");
7448 thinkpad_acpi_module_exit();
7451 tpacpi_sensors_pdev
= platform_device_register_simple(
7452 TPACPI_HWMON_DRVR_NAME
,
7454 if (IS_ERR(tpacpi_sensors_pdev
)) {
7455 ret
= PTR_ERR(tpacpi_sensors_pdev
);
7456 tpacpi_sensors_pdev
= NULL
;
7458 "unable to register hwmon platform device\n");
7459 thinkpad_acpi_module_exit();
7462 ret
= device_create_file(&tpacpi_sensors_pdev
->dev
,
7463 &dev_attr_thinkpad_acpi_pdev_name
);
7466 "unable to create sysfs hwmon device attributes\n");
7467 thinkpad_acpi_module_exit();
7470 tp_features
.sensors_pdev_attrs_registered
= 1;
7471 tpacpi_hwmon
= hwmon_device_register(&tpacpi_sensors_pdev
->dev
);
7472 if (IS_ERR(tpacpi_hwmon
)) {
7473 ret
= PTR_ERR(tpacpi_hwmon
);
7474 tpacpi_hwmon
= NULL
;
7475 printk(TPACPI_ERR
"unable to register hwmon device\n");
7476 thinkpad_acpi_module_exit();
7479 mutex_init(&tpacpi_inputdev_send_mutex
);
7480 tpacpi_inputdev
= input_allocate_device();
7481 if (!tpacpi_inputdev
) {
7482 printk(TPACPI_ERR
"unable to allocate input device\n");
7483 thinkpad_acpi_module_exit();
7486 /* Prepare input device, but don't register */
7487 tpacpi_inputdev
->name
= "ThinkPad Extra Buttons";
7488 tpacpi_inputdev
->phys
= TPACPI_DRVR_NAME
"/input0";
7489 tpacpi_inputdev
->id
.bustype
= BUS_HOST
;
7490 tpacpi_inputdev
->id
.vendor
= (thinkpad_id
.vendor
) ?
7491 thinkpad_id
.vendor
:
7493 tpacpi_inputdev
->id
.product
= TPACPI_HKEY_INPUT_PRODUCT
;
7494 tpacpi_inputdev
->id
.version
= TPACPI_HKEY_INPUT_VERSION
;
7496 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
7497 ret
= ibm_init(&ibms_init
[i
]);
7498 if (ret
>= 0 && *ibms_init
[i
].param
)
7499 ret
= ibms_init
[i
].data
->write(ibms_init
[i
].param
);
7501 thinkpad_acpi_module_exit();
7505 ret
= input_register_device(tpacpi_inputdev
);
7507 printk(TPACPI_ERR
"unable to register input device\n");
7508 thinkpad_acpi_module_exit();
7511 tp_features
.input_device_registered
= 1;
7514 tpacpi_lifecycle
= TPACPI_LIFE_RUNNING
;
7518 /* Please remove this in year 2009 */
7519 MODULE_ALIAS("ibm_acpi");
7521 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME
);
7524 * DMI matching for module autoloading
7526 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7527 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
7529 * Only models listed in thinkwiki will be supported, so add yours
7530 * if it is not there yet.
7532 #define IBM_BIOS_MODULE_ALIAS(__type) \
7533 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
7535 /* Non-ancient thinkpads */
7536 MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
7537 MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
7539 /* Ancient thinkpad BIOSes have to be identified by
7540 * BIOS type or model number, and there are far less
7541 * BIOS types than model numbers... */
7542 IBM_BIOS_MODULE_ALIAS("I[BDHIMNOTWVYZ]");
7543 IBM_BIOS_MODULE_ALIAS("1[0368A-GIKM-PST]");
7544 IBM_BIOS_MODULE_ALIAS("K[UX-Z]");
7546 MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
7547 MODULE_DESCRIPTION(TPACPI_DESC
);
7548 MODULE_VERSION(TPACPI_VERSION
);
7549 MODULE_LICENSE("GPL");
7551 module_init(thinkpad_acpi_module_init
);
7552 module_exit(thinkpad_acpi_module_exit
);