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
;
310 /* Special LED class that can defer work */
311 struct tpacpi_led_classdev
{
312 struct led_classdev led_classdev
;
313 struct work_struct work
;
314 enum led_brightness new_brightness
;
318 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
319 static int dbg_wlswemul
;
320 static int tpacpi_wlsw_emulstate
;
321 static int dbg_bluetoothemul
;
322 static int tpacpi_bluetooth_emulstate
;
323 static int dbg_wwanemul
;
324 static int tpacpi_wwan_emulstate
;
325 static int dbg_uwbemul
;
326 static int tpacpi_uwb_emulstate
;
330 /****************************************************************************
331 ****************************************************************************
333 * ACPI Helpers and device model
335 ****************************************************************************
336 ****************************************************************************/
338 /*************************************************************************
342 static acpi_handle root_handle
;
344 #define TPACPI_HANDLE(object, parent, paths...) \
345 static acpi_handle object##_handle; \
346 static acpi_handle *object##_parent = &parent##_handle; \
347 static char *object##_path; \
348 static char *object##_paths[] = { paths }
350 TPACPI_HANDLE(ec
, root
, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
351 "\\_SB.PCI.ISA.EC", /* 570 */
352 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
353 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
354 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
355 "\\_SB.PCI0.ICH3.EC0", /* R31 */
356 "\\_SB.PCI0.LPC.EC", /* all others */
359 TPACPI_HANDLE(ecrd
, ec
, "ECRD"); /* 570 */
360 TPACPI_HANDLE(ecwr
, ec
, "ECWR"); /* 570 */
362 TPACPI_HANDLE(cmos
, root
, "\\UCMS", /* R50, R50e, R50p, R51, */
364 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
365 "\\CMS", /* R40, R40e */
368 TPACPI_HANDLE(hkey
, ec
, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
369 "^HKEY", /* R30, R31 */
370 "HKEY", /* all others */
373 TPACPI_HANDLE(vid
, root
, "\\_SB.PCI.AGP.VGA", /* 570 */
374 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
375 "\\_SB.PCI0.VID0", /* 770e */
376 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
377 "\\_SB.PCI0.AGP.VID", /* all others */
381 /*************************************************************************
385 static int acpi_evalf(acpi_handle handle
,
386 void *res
, char *method
, char *fmt
, ...)
389 struct acpi_object_list params
;
390 union acpi_object in_objs
[TPACPI_MAX_ACPI_ARGS
];
391 struct acpi_buffer result
, *resultp
;
392 union acpi_object out_obj
;
400 printk(TPACPI_ERR
"acpi_evalf() called with empty format\n");
413 params
.pointer
= &in_objs
[0];
420 in_objs
[params
.count
].integer
.value
= va_arg(ap
, int);
421 in_objs
[params
.count
++].type
= ACPI_TYPE_INTEGER
;
423 /* add more types as needed */
425 printk(TPACPI_ERR
"acpi_evalf() called "
426 "with invalid format character '%c'\n", c
);
432 if (res_type
!= 'v') {
433 result
.length
= sizeof(out_obj
);
434 result
.pointer
= &out_obj
;
439 status
= acpi_evaluate_object(handle
, method
, ¶ms
, resultp
);
444 *(int *)res
= out_obj
.integer
.value
;
445 success
= status
== AE_OK
&& out_obj
.type
== ACPI_TYPE_INTEGER
;
448 success
= status
== AE_OK
;
450 /* add more types as needed */
452 printk(TPACPI_ERR
"acpi_evalf() called "
453 "with invalid format character '%c'\n", res_type
);
457 if (!success
&& !quiet
)
458 printk(TPACPI_ERR
"acpi_evalf(%s, %s, ...) failed: %d\n",
459 method
, fmt0
, status
);
464 static int acpi_ec_read(int i
, u8
*p
)
469 if (!acpi_evalf(ecrd_handle
, &v
, NULL
, "dd", i
))
473 if (ec_read(i
, p
) < 0)
480 static int acpi_ec_write(int i
, u8 v
)
483 if (!acpi_evalf(ecwr_handle
, NULL
, NULL
, "vdd", i
, v
))
486 if (ec_write(i
, v
) < 0)
493 #if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_BAY)
494 static int _sta(acpi_handle handle
)
498 if (!handle
|| !acpi_evalf(handle
, &status
, "_STA", "d"))
505 static int issue_thinkpad_cmos_command(int cmos_cmd
)
510 if (!acpi_evalf(cmos_handle
, NULL
, NULL
, "vd", cmos_cmd
))
516 /*************************************************************************
520 #define TPACPI_ACPIHANDLE_INIT(object) \
521 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
522 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
524 static void drv_acpi_handle_init(char *name
,
525 acpi_handle
*handle
, acpi_handle parent
,
526 char **paths
, int num_paths
, char **path
)
531 vdbg_printk(TPACPI_DBG_INIT
, "trying to locate ACPI handle for %s\n",
534 for (i
= 0; i
< num_paths
; i
++) {
535 status
= acpi_get_handle(parent
, paths
[i
], handle
);
536 if (ACPI_SUCCESS(status
)) {
538 dbg_printk(TPACPI_DBG_INIT
,
539 "Found ACPI handle %s for %s\n",
545 vdbg_printk(TPACPI_DBG_INIT
, "ACPI handle for %s not found\n",
550 static void dispatch_acpi_notify(acpi_handle handle
, u32 event
, void *data
)
552 struct ibm_struct
*ibm
= data
;
554 if (tpacpi_lifecycle
!= TPACPI_LIFE_RUNNING
)
557 if (!ibm
|| !ibm
->acpi
|| !ibm
->acpi
->notify
)
560 ibm
->acpi
->notify(ibm
, event
);
563 static int __init
setup_acpi_notify(struct ibm_struct
*ibm
)
570 if (!*ibm
->acpi
->handle
)
573 vdbg_printk(TPACPI_DBG_INIT
,
574 "setting up ACPI notify for %s\n", ibm
->name
);
576 rc
= acpi_bus_get_device(*ibm
->acpi
->handle
, &ibm
->acpi
->device
);
578 printk(TPACPI_ERR
"acpi_bus_get_device(%s) failed: %d\n",
583 acpi_driver_data(ibm
->acpi
->device
) = ibm
;
584 sprintf(acpi_device_class(ibm
->acpi
->device
), "%s/%s",
585 TPACPI_ACPI_EVENT_PREFIX
,
588 status
= acpi_install_notify_handler(*ibm
->acpi
->handle
,
589 ibm
->acpi
->type
, dispatch_acpi_notify
, ibm
);
590 if (ACPI_FAILURE(status
)) {
591 if (status
== AE_ALREADY_EXISTS
) {
593 "another device driver is already "
594 "handling %s events\n", ibm
->name
);
597 "acpi_install_notify_handler(%s) failed: %d\n",
602 ibm
->flags
.acpi_notify_installed
= 1;
606 static int __init
tpacpi_device_add(struct acpi_device
*device
)
611 static int __init
register_tpacpi_subdriver(struct ibm_struct
*ibm
)
615 dbg_printk(TPACPI_DBG_INIT
,
616 "registering %s as an ACPI driver\n", ibm
->name
);
620 ibm
->acpi
->driver
= kzalloc(sizeof(struct acpi_driver
), GFP_KERNEL
);
621 if (!ibm
->acpi
->driver
) {
623 "failed to allocate memory for ibm->acpi->driver\n");
627 sprintf(ibm
->acpi
->driver
->name
, "%s_%s", TPACPI_NAME
, ibm
->name
);
628 ibm
->acpi
->driver
->ids
= ibm
->acpi
->hid
;
630 ibm
->acpi
->driver
->ops
.add
= &tpacpi_device_add
;
632 rc
= acpi_bus_register_driver(ibm
->acpi
->driver
);
634 printk(TPACPI_ERR
"acpi_bus_register_driver(%s) failed: %d\n",
636 kfree(ibm
->acpi
->driver
);
637 ibm
->acpi
->driver
= NULL
;
639 ibm
->flags
.acpi_driver_registered
= 1;
645 /****************************************************************************
646 ****************************************************************************
650 ****************************************************************************
651 ****************************************************************************/
653 static int dispatch_procfs_read(char *page
, char **start
, off_t off
,
654 int count
, int *eof
, void *data
)
656 struct ibm_struct
*ibm
= data
;
659 if (!ibm
|| !ibm
->read
)
662 len
= ibm
->read(page
);
666 if (len
<= off
+ count
)
678 static int dispatch_procfs_write(struct file
*file
,
679 const char __user
*userbuf
,
680 unsigned long count
, void *data
)
682 struct ibm_struct
*ibm
= data
;
686 if (!ibm
|| !ibm
->write
)
689 kernbuf
= kmalloc(count
+ 2, GFP_KERNEL
);
693 if (copy_from_user(kernbuf
, userbuf
, count
)) {
699 strcat(kernbuf
, ",");
700 ret
= ibm
->write(kernbuf
);
709 static char *next_cmd(char **cmds
)
714 while ((end
= strchr(start
, ',')) && end
== start
)
726 /****************************************************************************
727 ****************************************************************************
729 * Device model: input, hwmon and platform
731 ****************************************************************************
732 ****************************************************************************/
734 static struct platform_device
*tpacpi_pdev
;
735 static struct platform_device
*tpacpi_sensors_pdev
;
736 static struct device
*tpacpi_hwmon
;
737 static struct input_dev
*tpacpi_inputdev
;
738 static struct mutex tpacpi_inputdev_send_mutex
;
739 static LIST_HEAD(tpacpi_all_drivers
);
741 static int tpacpi_suspend_handler(struct platform_device
*pdev
,
744 struct ibm_struct
*ibm
, *itmp
;
746 list_for_each_entry_safe(ibm
, itmp
,
750 (ibm
->suspend
)(state
);
756 static int tpacpi_resume_handler(struct platform_device
*pdev
)
758 struct ibm_struct
*ibm
, *itmp
;
760 list_for_each_entry_safe(ibm
, itmp
,
770 static void tpacpi_shutdown_handler(struct platform_device
*pdev
)
772 struct ibm_struct
*ibm
, *itmp
;
774 list_for_each_entry_safe(ibm
, itmp
,
782 static struct platform_driver tpacpi_pdriver
= {
784 .name
= TPACPI_DRVR_NAME
,
785 .owner
= THIS_MODULE
,
787 .suspend
= tpacpi_suspend_handler
,
788 .resume
= tpacpi_resume_handler
,
789 .shutdown
= tpacpi_shutdown_handler
,
792 static struct platform_driver tpacpi_hwmon_pdriver
= {
794 .name
= TPACPI_HWMON_DRVR_NAME
,
795 .owner
= THIS_MODULE
,
799 /*************************************************************************
800 * sysfs support helpers
803 struct attribute_set
{
804 unsigned int members
, max_members
;
805 struct attribute_group group
;
808 struct attribute_set_obj
{
809 struct attribute_set s
;
811 } __attribute__((packed
));
813 static struct attribute_set
*create_attr_set(unsigned int max_members
,
816 struct attribute_set_obj
*sobj
;
818 if (max_members
== 0)
821 /* Allocates space for implicit NULL at the end too */
822 sobj
= kzalloc(sizeof(struct attribute_set_obj
) +
823 max_members
* sizeof(struct attribute
*),
827 sobj
->s
.max_members
= max_members
;
828 sobj
->s
.group
.attrs
= &sobj
->a
;
829 sobj
->s
.group
.name
= name
;
834 #define destroy_attr_set(_set) \
837 /* not multi-threaded safe, use it in a single thread per set */
838 static int add_to_attr_set(struct attribute_set
*s
, struct attribute
*attr
)
843 if (s
->members
>= s
->max_members
)
846 s
->group
.attrs
[s
->members
] = attr
;
852 static int add_many_to_attr_set(struct attribute_set
*s
,
853 struct attribute
**attr
,
858 for (i
= 0; i
< count
; i
++) {
859 res
= add_to_attr_set(s
, attr
[i
]);
867 static void delete_attr_set(struct attribute_set
*s
, struct kobject
*kobj
)
869 sysfs_remove_group(kobj
, &s
->group
);
873 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
874 sysfs_create_group(_kobj, &_attr_set->group)
876 static int parse_strtoul(const char *buf
,
877 unsigned long max
, unsigned long *value
)
881 while (*buf
&& isspace(*buf
))
883 *value
= simple_strtoul(buf
, &endp
, 0);
884 while (*endp
&& isspace(*endp
))
886 if (*endp
|| *value
> max
)
892 static void tpacpi_disable_brightness_delay(void)
894 if (acpi_evalf(hkey_handle
, NULL
, "PWMS", "qvd", 0))
896 "ACPI backlight control delay disabled\n");
899 static int __init
tpacpi_query_bcl_levels(acpi_handle handle
)
901 struct acpi_buffer buffer
= { ACPI_ALLOCATE_BUFFER
, NULL
};
902 union acpi_object
*obj
;
905 if (ACPI_SUCCESS(acpi_evaluate_object(handle
, NULL
, NULL
, &buffer
))) {
906 obj
= (union acpi_object
*)buffer
.pointer
;
907 if (!obj
|| (obj
->type
!= ACPI_TYPE_PACKAGE
)) {
908 printk(TPACPI_ERR
"Unknown _BCL data, "
909 "please report this to %s\n", TPACPI_MAIL
);
912 rc
= obj
->package
.count
;
918 kfree(buffer
.pointer
);
922 static acpi_status __init
tpacpi_acpi_walk_find_bcl(acpi_handle handle
,
923 u32 lvl
, void *context
, void **rv
)
925 char name
[ACPI_PATH_SEGMENT_LENGTH
];
926 struct acpi_buffer buffer
= { sizeof(name
), &name
};
928 if (ACPI_SUCCESS(acpi_get_name(handle
, ACPI_SINGLE_NAME
, &buffer
)) &&
929 !strncmp("_BCL", name
, sizeof(name
) - 1)) {
931 **(int **)rv
= tpacpi_query_bcl_levels(handle
);
932 return AE_CTRL_TERMINATE
;
939 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
941 static int __init
tpacpi_check_std_acpi_brightness_support(void)
945 void *bcl_ptr
= &bcl_levels
;
948 TPACPI_ACPIHANDLE_INIT(vid
);
954 * Search for a _BCL method, and execute it. This is safe on all
955 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
956 * BIOS in ACPI backlight control mode. We do NOT have to care
957 * about calling the _BCL method in an enabled video device, any
958 * will do for our purposes.
961 status
= acpi_walk_namespace(ACPI_TYPE_METHOD
, vid_handle
, 3,
962 tpacpi_acpi_walk_find_bcl
, NULL
,
965 if (ACPI_SUCCESS(status
) && bcl_levels
> 2) {
966 tp_features
.bright_acpimode
= 1;
967 return (bcl_levels
- 2);
973 static int __init
tpacpi_new_rfkill(const unsigned int id
,
975 const enum rfkill_type rfktype
,
977 const bool set_default
,
978 int (*toggle_radio
)(void *, enum rfkill_state
),
979 int (*get_state
)(void *, enum rfkill_state
*))
982 enum rfkill_state initial_state
= RFKILL_STATE_SOFT_BLOCKED
;
984 res
= get_state(NULL
, &initial_state
);
987 "failed to read initial state for %s, error %d; "
988 "will turn radio off\n", name
, res
);
989 } else if (set_default
) {
990 /* try to set the initial state as the default for the rfkill
991 * type, since we ask the firmware to preserve it across S5 in
993 rfkill_set_default(rfktype
,
994 (initial_state
== RFKILL_STATE_UNBLOCKED
) ?
995 RFKILL_STATE_UNBLOCKED
:
996 RFKILL_STATE_SOFT_BLOCKED
);
999 *rfk
= rfkill_allocate(&tpacpi_pdev
->dev
, rfktype
);
1002 "failed to allocate memory for rfkill class\n");
1006 (*rfk
)->name
= name
;
1007 (*rfk
)->get_state
= get_state
;
1008 (*rfk
)->toggle_radio
= toggle_radio
;
1009 (*rfk
)->state
= initial_state
;
1011 res
= rfkill_register(*rfk
);
1014 "failed to register %s rfkill switch: %d\n",
1024 /*************************************************************************
1025 * thinkpad-acpi driver attributes
1028 /* interface_version --------------------------------------------------- */
1029 static ssize_t
tpacpi_driver_interface_version_show(
1030 struct device_driver
*drv
,
1033 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", TPACPI_SYSFS_VERSION
);
1036 static DRIVER_ATTR(interface_version
, S_IRUGO
,
1037 tpacpi_driver_interface_version_show
, NULL
);
1039 /* debug_level --------------------------------------------------------- */
1040 static ssize_t
tpacpi_driver_debug_show(struct device_driver
*drv
,
1043 return snprintf(buf
, PAGE_SIZE
, "0x%04x\n", dbg_level
);
1046 static ssize_t
tpacpi_driver_debug_store(struct device_driver
*drv
,
1047 const char *buf
, size_t count
)
1051 if (parse_strtoul(buf
, 0xffff, &t
))
1059 static DRIVER_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
1060 tpacpi_driver_debug_show
, tpacpi_driver_debug_store
);
1062 /* version ------------------------------------------------------------- */
1063 static ssize_t
tpacpi_driver_version_show(struct device_driver
*drv
,
1066 return snprintf(buf
, PAGE_SIZE
, "%s v%s\n",
1067 TPACPI_DESC
, TPACPI_VERSION
);
1070 static DRIVER_ATTR(version
, S_IRUGO
,
1071 tpacpi_driver_version_show
, NULL
);
1073 /* --------------------------------------------------------------------- */
1075 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1077 static void tpacpi_send_radiosw_update(void);
1079 /* wlsw_emulstate ------------------------------------------------------ */
1080 static ssize_t
tpacpi_driver_wlsw_emulstate_show(struct device_driver
*drv
,
1083 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_wlsw_emulstate
);
1086 static ssize_t
tpacpi_driver_wlsw_emulstate_store(struct device_driver
*drv
,
1087 const char *buf
, size_t count
)
1091 if (parse_strtoul(buf
, 1, &t
))
1094 if (tpacpi_wlsw_emulstate
!= t
) {
1095 tpacpi_wlsw_emulstate
= !!t
;
1096 tpacpi_send_radiosw_update();
1098 tpacpi_wlsw_emulstate
= !!t
;
1103 static DRIVER_ATTR(wlsw_emulstate
, S_IWUSR
| S_IRUGO
,
1104 tpacpi_driver_wlsw_emulstate_show
,
1105 tpacpi_driver_wlsw_emulstate_store
);
1107 /* bluetooth_emulstate ------------------------------------------------- */
1108 static ssize_t
tpacpi_driver_bluetooth_emulstate_show(
1109 struct device_driver
*drv
,
1112 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_bluetooth_emulstate
);
1115 static ssize_t
tpacpi_driver_bluetooth_emulstate_store(
1116 struct device_driver
*drv
,
1117 const char *buf
, size_t count
)
1121 if (parse_strtoul(buf
, 1, &t
))
1124 tpacpi_bluetooth_emulstate
= !!t
;
1129 static DRIVER_ATTR(bluetooth_emulstate
, S_IWUSR
| S_IRUGO
,
1130 tpacpi_driver_bluetooth_emulstate_show
,
1131 tpacpi_driver_bluetooth_emulstate_store
);
1133 /* wwan_emulstate ------------------------------------------------- */
1134 static ssize_t
tpacpi_driver_wwan_emulstate_show(
1135 struct device_driver
*drv
,
1138 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_wwan_emulstate
);
1141 static ssize_t
tpacpi_driver_wwan_emulstate_store(
1142 struct device_driver
*drv
,
1143 const char *buf
, size_t count
)
1147 if (parse_strtoul(buf
, 1, &t
))
1150 tpacpi_wwan_emulstate
= !!t
;
1155 static DRIVER_ATTR(wwan_emulstate
, S_IWUSR
| S_IRUGO
,
1156 tpacpi_driver_wwan_emulstate_show
,
1157 tpacpi_driver_wwan_emulstate_store
);
1159 /* uwb_emulstate ------------------------------------------------- */
1160 static ssize_t
tpacpi_driver_uwb_emulstate_show(
1161 struct device_driver
*drv
,
1164 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!tpacpi_uwb_emulstate
);
1167 static ssize_t
tpacpi_driver_uwb_emulstate_store(
1168 struct device_driver
*drv
,
1169 const char *buf
, size_t count
)
1173 if (parse_strtoul(buf
, 1, &t
))
1176 tpacpi_uwb_emulstate
= !!t
;
1181 static DRIVER_ATTR(uwb_emulstate
, S_IWUSR
| S_IRUGO
,
1182 tpacpi_driver_uwb_emulstate_show
,
1183 tpacpi_driver_uwb_emulstate_store
);
1186 /* --------------------------------------------------------------------- */
1188 static struct driver_attribute
*tpacpi_driver_attributes
[] = {
1189 &driver_attr_debug_level
, &driver_attr_version
,
1190 &driver_attr_interface_version
,
1193 static int __init
tpacpi_create_driver_attributes(struct device_driver
*drv
)
1199 while (!res
&& i
< ARRAY_SIZE(tpacpi_driver_attributes
)) {
1200 res
= driver_create_file(drv
, tpacpi_driver_attributes
[i
]);
1204 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1205 if (!res
&& dbg_wlswemul
)
1206 res
= driver_create_file(drv
, &driver_attr_wlsw_emulstate
);
1207 if (!res
&& dbg_bluetoothemul
)
1208 res
= driver_create_file(drv
, &driver_attr_bluetooth_emulstate
);
1209 if (!res
&& dbg_wwanemul
)
1210 res
= driver_create_file(drv
, &driver_attr_wwan_emulstate
);
1211 if (!res
&& dbg_uwbemul
)
1212 res
= driver_create_file(drv
, &driver_attr_uwb_emulstate
);
1218 static void tpacpi_remove_driver_attributes(struct device_driver
*drv
)
1222 for (i
= 0; i
< ARRAY_SIZE(tpacpi_driver_attributes
); i
++)
1223 driver_remove_file(drv
, tpacpi_driver_attributes
[i
]);
1225 #ifdef THINKPAD_ACPI_DEBUGFACILITIES
1226 driver_remove_file(drv
, &driver_attr_wlsw_emulstate
);
1227 driver_remove_file(drv
, &driver_attr_bluetooth_emulstate
);
1228 driver_remove_file(drv
, &driver_attr_wwan_emulstate
);
1229 driver_remove_file(drv
, &driver_attr_uwb_emulstate
);
1233 /****************************************************************************
1234 ****************************************************************************
1238 ****************************************************************************
1239 ****************************************************************************/
1241 /*************************************************************************
1242 * thinkpad-acpi init subdriver
1245 static int __init
thinkpad_acpi_driver_init(struct ibm_init_struct
*iibm
)
1247 printk(TPACPI_INFO
"%s v%s\n", TPACPI_DESC
, TPACPI_VERSION
);
1248 printk(TPACPI_INFO
"%s\n", TPACPI_URL
);
1250 printk(TPACPI_INFO
"ThinkPad BIOS %s, EC %s\n",
1251 (thinkpad_id
.bios_version_str
) ?
1252 thinkpad_id
.bios_version_str
: "unknown",
1253 (thinkpad_id
.ec_version_str
) ?
1254 thinkpad_id
.ec_version_str
: "unknown");
1256 if (thinkpad_id
.vendor
&& thinkpad_id
.model_str
)
1257 printk(TPACPI_INFO
"%s %s, model %s\n",
1258 (thinkpad_id
.vendor
== PCI_VENDOR_ID_IBM
) ?
1259 "IBM" : ((thinkpad_id
.vendor
==
1260 PCI_VENDOR_ID_LENOVO
) ?
1261 "Lenovo" : "Unknown vendor"),
1262 thinkpad_id
.model_str
,
1263 (thinkpad_id
.nummodel_str
) ?
1264 thinkpad_id
.nummodel_str
: "unknown");
1269 static int thinkpad_acpi_driver_read(char *p
)
1273 len
+= sprintf(p
+ len
, "driver:\t\t%s\n", TPACPI_DESC
);
1274 len
+= sprintf(p
+ len
, "version:\t%s\n", TPACPI_VERSION
);
1279 static struct ibm_struct thinkpad_acpi_driver_data
= {
1281 .read
= thinkpad_acpi_driver_read
,
1284 /*************************************************************************
1288 enum { /* hot key scan codes (derived from ACPI DSDT) */
1289 TP_ACPI_HOTKEYSCAN_FNF1
= 0,
1290 TP_ACPI_HOTKEYSCAN_FNF2
,
1291 TP_ACPI_HOTKEYSCAN_FNF3
,
1292 TP_ACPI_HOTKEYSCAN_FNF4
,
1293 TP_ACPI_HOTKEYSCAN_FNF5
,
1294 TP_ACPI_HOTKEYSCAN_FNF6
,
1295 TP_ACPI_HOTKEYSCAN_FNF7
,
1296 TP_ACPI_HOTKEYSCAN_FNF8
,
1297 TP_ACPI_HOTKEYSCAN_FNF9
,
1298 TP_ACPI_HOTKEYSCAN_FNF10
,
1299 TP_ACPI_HOTKEYSCAN_FNF11
,
1300 TP_ACPI_HOTKEYSCAN_FNF12
,
1301 TP_ACPI_HOTKEYSCAN_FNBACKSPACE
,
1302 TP_ACPI_HOTKEYSCAN_FNINSERT
,
1303 TP_ACPI_HOTKEYSCAN_FNDELETE
,
1304 TP_ACPI_HOTKEYSCAN_FNHOME
,
1305 TP_ACPI_HOTKEYSCAN_FNEND
,
1306 TP_ACPI_HOTKEYSCAN_FNPAGEUP
,
1307 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN
,
1308 TP_ACPI_HOTKEYSCAN_FNSPACE
,
1309 TP_ACPI_HOTKEYSCAN_VOLUMEUP
,
1310 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
,
1311 TP_ACPI_HOTKEYSCAN_MUTE
,
1312 TP_ACPI_HOTKEYSCAN_THINKPAD
,
1315 enum { /* Keys available through NVRAM polling */
1316 TPACPI_HKEY_NVRAM_KNOWN_MASK
= 0x00fb88c0U
,
1317 TPACPI_HKEY_NVRAM_GOOD_MASK
= 0x00fb8000U
,
1320 enum { /* Positions of some of the keys in hotkey masks */
1321 TP_ACPI_HKEY_DISPSWTCH_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF7
,
1322 TP_ACPI_HKEY_DISPXPAND_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF8
,
1323 TP_ACPI_HKEY_HIBERNATE_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNF12
,
1324 TP_ACPI_HKEY_BRGHTUP_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNHOME
,
1325 TP_ACPI_HKEY_BRGHTDWN_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNEND
,
1326 TP_ACPI_HKEY_THNKLGHT_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP
,
1327 TP_ACPI_HKEY_ZOOM_MASK
= 1 << TP_ACPI_HOTKEYSCAN_FNSPACE
,
1328 TP_ACPI_HKEY_VOLUP_MASK
= 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP
,
1329 TP_ACPI_HKEY_VOLDWN_MASK
= 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
,
1330 TP_ACPI_HKEY_MUTE_MASK
= 1 << TP_ACPI_HOTKEYSCAN_MUTE
,
1331 TP_ACPI_HKEY_THINKPAD_MASK
= 1 << TP_ACPI_HOTKEYSCAN_THINKPAD
,
1334 enum { /* NVRAM to ACPI HKEY group map */
1335 TP_NVRAM_HKEY_GROUP_HK2
= TP_ACPI_HKEY_THINKPAD_MASK
|
1336 TP_ACPI_HKEY_ZOOM_MASK
|
1337 TP_ACPI_HKEY_DISPSWTCH_MASK
|
1338 TP_ACPI_HKEY_HIBERNATE_MASK
,
1339 TP_NVRAM_HKEY_GROUP_BRIGHTNESS
= TP_ACPI_HKEY_BRGHTUP_MASK
|
1340 TP_ACPI_HKEY_BRGHTDWN_MASK
,
1341 TP_NVRAM_HKEY_GROUP_VOLUME
= TP_ACPI_HKEY_VOLUP_MASK
|
1342 TP_ACPI_HKEY_VOLDWN_MASK
|
1343 TP_ACPI_HKEY_MUTE_MASK
,
1346 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1347 struct tp_nvram_state
{
1348 u16 thinkpad_toggle
:1;
1350 u16 display_toggle
:1;
1351 u16 thinklight_toggle
:1;
1352 u16 hibernate_toggle
:1;
1353 u16 displayexp_toggle
:1;
1354 u16 display_state
:1;
1355 u16 brightness_toggle
:1;
1356 u16 volume_toggle
:1;
1359 u8 brightness_level
;
1363 static struct task_struct
*tpacpi_hotkey_task
;
1364 static u32 hotkey_source_mask
; /* bit mask 0=ACPI,1=NVRAM */
1365 static int hotkey_poll_freq
= 10; /* Hz */
1366 static struct mutex hotkey_thread_mutex
;
1367 static struct mutex hotkey_thread_data_mutex
;
1368 static unsigned int hotkey_config_change
;
1370 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1372 #define hotkey_source_mask 0U
1374 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1376 static struct mutex hotkey_mutex
;
1378 static enum { /* Reasons for waking up */
1379 TP_ACPI_WAKEUP_NONE
= 0, /* None or unknown */
1380 TP_ACPI_WAKEUP_BAYEJ
, /* Bay ejection request */
1381 TP_ACPI_WAKEUP_UNDOCK
, /* Undock request */
1382 } hotkey_wakeup_reason
;
1384 static int hotkey_autosleep_ack
;
1386 static int hotkey_orig_status
;
1387 static u32 hotkey_orig_mask
;
1388 static u32 hotkey_all_mask
;
1389 static u32 hotkey_reserved_mask
;
1390 static u32 hotkey_mask
;
1392 static unsigned int hotkey_report_mode
;
1394 static u16
*hotkey_keycode_map
;
1396 static struct attribute_set
*hotkey_dev_attributes
;
1398 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1399 #define HOTKEY_CONFIG_CRITICAL_START \
1401 mutex_lock(&hotkey_thread_data_mutex); \
1402 hotkey_config_change++; \
1404 #define HOTKEY_CONFIG_CRITICAL_END \
1405 mutex_unlock(&hotkey_thread_data_mutex);
1407 #define HOTKEY_CONFIG_CRITICAL_START
1408 #define HOTKEY_CONFIG_CRITICAL_END
1409 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1411 /* HKEY.MHKG() return bits */
1412 #define TP_HOTKEY_TABLET_MASK (1 << 3)
1414 static int hotkey_get_wlsw(int *status
)
1416 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1418 *status
= !!tpacpi_wlsw_emulstate
;
1422 if (!acpi_evalf(hkey_handle
, status
, "WLSW", "d"))
1427 static int hotkey_get_tablet_mode(int *status
)
1431 if (!acpi_evalf(hkey_handle
, &s
, "MHKG", "d"))
1434 *status
= ((s
& TP_HOTKEY_TABLET_MASK
) != 0);
1439 * Call with hotkey_mutex held
1441 static int hotkey_mask_get(void)
1445 if (tp_features
.hotkey_mask
) {
1446 if (!acpi_evalf(hkey_handle
, &m
, "DHKN", "d"))
1449 hotkey_mask
= m
| (hotkey_source_mask
& hotkey_mask
);
1455 * Call with hotkey_mutex held
1457 static int hotkey_mask_set(u32 mask
)
1462 if (tp_features
.hotkey_mask
) {
1463 if (!tp_warned
.hotkey_mask_ff
&&
1464 (mask
== 0xffff || mask
== 0xffffff ||
1465 mask
== 0xffffffff)) {
1466 tp_warned
.hotkey_mask_ff
= 1;
1467 printk(TPACPI_NOTICE
1468 "setting the hotkey mask to 0x%08x is likely "
1469 "not the best way to go about it\n", mask
);
1470 printk(TPACPI_NOTICE
1471 "please consider using the driver defaults, "
1472 "and refer to up-to-date thinkpad-acpi "
1476 HOTKEY_CONFIG_CRITICAL_START
1477 for (i
= 0; i
< 32; i
++) {
1479 /* enable in firmware mask only keys not in NVRAM
1480 * mode, but enable the key in the cached hotkey_mask
1481 * regardless of mode, or the key will end up
1482 * disabled by hotkey_mask_get() */
1483 if (!acpi_evalf(hkey_handle
,
1484 NULL
, "MHKM", "vdd", i
+ 1,
1485 !!((mask
& ~hotkey_source_mask
) & m
))) {
1489 hotkey_mask
= (hotkey_mask
& ~m
) | (mask
& m
);
1492 HOTKEY_CONFIG_CRITICAL_END
1494 /* hotkey_mask_get must be called unconditionally below */
1495 if (!hotkey_mask_get() && !rc
&&
1496 (hotkey_mask
& ~hotkey_source_mask
) !=
1497 (mask
& ~hotkey_source_mask
)) {
1498 printk(TPACPI_NOTICE
1499 "requested hot key mask 0x%08x, but "
1500 "firmware forced it to 0x%08x\n",
1504 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1505 HOTKEY_CONFIG_CRITICAL_START
1506 hotkey_mask
= mask
& hotkey_source_mask
;
1507 HOTKEY_CONFIG_CRITICAL_END
1509 if (hotkey_mask
!= mask
) {
1510 printk(TPACPI_NOTICE
1511 "requested hot key mask 0x%08x, "
1512 "forced to 0x%08x (NVRAM poll mask is "
1513 "0x%08x): no firmware mask support\n",
1514 mask
, hotkey_mask
, hotkey_source_mask
);
1519 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1525 static int hotkey_status_get(int *status
)
1527 if (!acpi_evalf(hkey_handle
, status
, "DHKC", "d"))
1533 static int hotkey_status_set(int status
)
1535 if (!acpi_evalf(hkey_handle
, NULL
, "MHKC", "vd", status
))
1541 static void tpacpi_input_send_tabletsw(void)
1545 if (tp_features
.hotkey_tablet
&&
1546 !hotkey_get_tablet_mode(&state
)) {
1547 mutex_lock(&tpacpi_inputdev_send_mutex
);
1549 input_report_switch(tpacpi_inputdev
,
1550 SW_TABLET_MODE
, !!state
);
1551 input_sync(tpacpi_inputdev
);
1553 mutex_unlock(&tpacpi_inputdev_send_mutex
);
1557 static void tpacpi_input_send_key(unsigned int scancode
)
1559 unsigned int keycode
;
1561 keycode
= hotkey_keycode_map
[scancode
];
1563 if (keycode
!= KEY_RESERVED
) {
1564 mutex_lock(&tpacpi_inputdev_send_mutex
);
1566 input_report_key(tpacpi_inputdev
, keycode
, 1);
1567 if (keycode
== KEY_UNKNOWN
)
1568 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
,
1570 input_sync(tpacpi_inputdev
);
1572 input_report_key(tpacpi_inputdev
, keycode
, 0);
1573 if (keycode
== KEY_UNKNOWN
)
1574 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
,
1576 input_sync(tpacpi_inputdev
);
1578 mutex_unlock(&tpacpi_inputdev_send_mutex
);
1582 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1583 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
;
1585 static void tpacpi_hotkey_send_key(unsigned int scancode
)
1587 tpacpi_input_send_key(scancode
);
1588 if (hotkey_report_mode
< 2) {
1589 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver
.device
,
1590 0x80, 0x1001 + scancode
);
1594 static void hotkey_read_nvram(struct tp_nvram_state
*n
, u32 m
)
1598 if (m
& TP_NVRAM_HKEY_GROUP_HK2
) {
1599 d
= nvram_read_byte(TP_NVRAM_ADDR_HK2
);
1600 n
->thinkpad_toggle
= !!(d
& TP_NVRAM_MASK_HKT_THINKPAD
);
1601 n
->zoom_toggle
= !!(d
& TP_NVRAM_MASK_HKT_ZOOM
);
1602 n
->display_toggle
= !!(d
& TP_NVRAM_MASK_HKT_DISPLAY
);
1603 n
->hibernate_toggle
= !!(d
& TP_NVRAM_MASK_HKT_HIBERNATE
);
1605 if (m
& TP_ACPI_HKEY_THNKLGHT_MASK
) {
1606 d
= nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT
);
1607 n
->thinklight_toggle
= !!(d
& TP_NVRAM_MASK_THINKLIGHT
);
1609 if (m
& TP_ACPI_HKEY_DISPXPAND_MASK
) {
1610 d
= nvram_read_byte(TP_NVRAM_ADDR_VIDEO
);
1611 n
->displayexp_toggle
=
1612 !!(d
& TP_NVRAM_MASK_HKT_DISPEXPND
);
1614 if (m
& TP_NVRAM_HKEY_GROUP_BRIGHTNESS
) {
1615 d
= nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
);
1616 n
->brightness_level
= (d
& TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
1617 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
1618 n
->brightness_toggle
=
1619 !!(d
& TP_NVRAM_MASK_HKT_BRIGHTNESS
);
1621 if (m
& TP_NVRAM_HKEY_GROUP_VOLUME
) {
1622 d
= nvram_read_byte(TP_NVRAM_ADDR_MIXER
);
1623 n
->volume_level
= (d
& TP_NVRAM_MASK_LEVEL_VOLUME
)
1624 >> TP_NVRAM_POS_LEVEL_VOLUME
;
1625 n
->mute
= !!(d
& TP_NVRAM_MASK_MUTE
);
1626 n
->volume_toggle
= !!(d
& TP_NVRAM_MASK_HKT_VOLUME
);
1630 #define TPACPI_COMPARE_KEY(__scancode, __member) \
1632 if ((mask & (1 << __scancode)) && \
1633 oldn->__member != newn->__member) \
1634 tpacpi_hotkey_send_key(__scancode); \
1637 #define TPACPI_MAY_SEND_KEY(__scancode) \
1638 do { if (mask & (1 << __scancode)) \
1639 tpacpi_hotkey_send_key(__scancode); } while (0)
1641 static void hotkey_compare_and_issue_event(struct tp_nvram_state
*oldn
,
1642 struct tp_nvram_state
*newn
,
1645 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD
, thinkpad_toggle
);
1646 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE
, zoom_toggle
);
1647 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7
, display_toggle
);
1648 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12
, hibernate_toggle
);
1650 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP
, thinklight_toggle
);
1652 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8
, displayexp_toggle
);
1655 if (oldn
->volume_toggle
!= newn
->volume_toggle
) {
1656 if (oldn
->mute
!= newn
->mute
) {
1657 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE
);
1659 if (oldn
->volume_level
> newn
->volume_level
) {
1660 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
1661 } else if (oldn
->volume_level
< newn
->volume_level
) {
1662 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
1663 } else if (oldn
->mute
== newn
->mute
) {
1664 /* repeated key presses that didn't change state */
1666 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE
);
1667 } else if (newn
->volume_level
!= 0) {
1668 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP
);
1670 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN
);
1675 /* handle brightness */
1676 if (oldn
->brightness_toggle
!= newn
->brightness_toggle
) {
1677 if (oldn
->brightness_level
< newn
->brightness_level
) {
1678 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
1679 } else if (oldn
->brightness_level
> newn
->brightness_level
) {
1680 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
1682 /* repeated key presses that didn't change state */
1683 if (newn
->brightness_level
!= 0) {
1684 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME
);
1686 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND
);
1692 #undef TPACPI_COMPARE_KEY
1693 #undef TPACPI_MAY_SEND_KEY
1695 static int hotkey_kthread(void *data
)
1697 struct tp_nvram_state s
[2];
1699 unsigned int si
, so
;
1701 unsigned int change_detector
, must_reset
;
1703 mutex_lock(&hotkey_thread_mutex
);
1705 if (tpacpi_lifecycle
== TPACPI_LIFE_EXITING
)
1714 /* Initial state for compares */
1715 mutex_lock(&hotkey_thread_data_mutex
);
1716 change_detector
= hotkey_config_change
;
1717 mask
= hotkey_source_mask
& hotkey_mask
;
1718 mutex_unlock(&hotkey_thread_data_mutex
);
1719 hotkey_read_nvram(&s
[so
], mask
);
1721 while (!kthread_should_stop() && hotkey_poll_freq
) {
1723 t
= 1000/hotkey_poll_freq
;
1724 t
= msleep_interruptible(t
);
1725 if (unlikely(kthread_should_stop()))
1727 must_reset
= try_to_freeze();
1728 if (t
> 0 && !must_reset
)
1731 mutex_lock(&hotkey_thread_data_mutex
);
1732 if (must_reset
|| hotkey_config_change
!= change_detector
) {
1733 /* forget old state on thaw or config change */
1736 change_detector
= hotkey_config_change
;
1738 mask
= hotkey_source_mask
& hotkey_mask
;
1739 mutex_unlock(&hotkey_thread_data_mutex
);
1742 hotkey_read_nvram(&s
[si
], mask
);
1743 if (likely(si
!= so
)) {
1744 hotkey_compare_and_issue_event(&s
[so
], &s
[si
],
1754 mutex_unlock(&hotkey_thread_mutex
);
1758 static void hotkey_poll_stop_sync(void)
1760 if (tpacpi_hotkey_task
) {
1761 if (frozen(tpacpi_hotkey_task
) ||
1762 freezing(tpacpi_hotkey_task
))
1763 thaw_process(tpacpi_hotkey_task
);
1765 kthread_stop(tpacpi_hotkey_task
);
1766 tpacpi_hotkey_task
= NULL
;
1767 mutex_lock(&hotkey_thread_mutex
);
1768 /* at this point, the thread did exit */
1769 mutex_unlock(&hotkey_thread_mutex
);
1773 /* call with hotkey_mutex held */
1774 static void hotkey_poll_setup(int may_warn
)
1776 if ((hotkey_source_mask
& hotkey_mask
) != 0 &&
1777 hotkey_poll_freq
> 0 &&
1778 (tpacpi_inputdev
->users
> 0 || hotkey_report_mode
< 2)) {
1779 if (!tpacpi_hotkey_task
) {
1780 tpacpi_hotkey_task
= kthread_run(hotkey_kthread
,
1781 NULL
, TPACPI_NVRAM_KTHREAD_NAME
);
1782 if (IS_ERR(tpacpi_hotkey_task
)) {
1783 tpacpi_hotkey_task
= NULL
;
1785 "could not create kernel thread "
1786 "for hotkey polling\n");
1790 hotkey_poll_stop_sync();
1792 hotkey_source_mask
!= 0 && hotkey_poll_freq
== 0) {
1793 printk(TPACPI_NOTICE
1794 "hot keys 0x%08x require polling, "
1795 "which is currently disabled\n",
1796 hotkey_source_mask
);
1801 static void hotkey_poll_setup_safe(int may_warn
)
1803 mutex_lock(&hotkey_mutex
);
1804 hotkey_poll_setup(may_warn
);
1805 mutex_unlock(&hotkey_mutex
);
1808 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1810 static void hotkey_poll_setup_safe(int __unused
)
1814 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1816 static int hotkey_inputdev_open(struct input_dev
*dev
)
1818 switch (tpacpi_lifecycle
) {
1819 case TPACPI_LIFE_INIT
:
1821 * hotkey_init will call hotkey_poll_setup_safe
1822 * at the appropriate moment
1825 case TPACPI_LIFE_EXITING
:
1827 case TPACPI_LIFE_RUNNING
:
1828 hotkey_poll_setup_safe(0);
1832 /* Should only happen if tpacpi_lifecycle is corrupt */
1837 static void hotkey_inputdev_close(struct input_dev
*dev
)
1839 /* disable hotkey polling when possible */
1840 if (tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
)
1841 hotkey_poll_setup_safe(0);
1844 /* sysfs hotkey enable ------------------------------------------------- */
1845 static ssize_t
hotkey_enable_show(struct device
*dev
,
1846 struct device_attribute
*attr
,
1851 res
= hotkey_status_get(&status
);
1855 return snprintf(buf
, PAGE_SIZE
, "%d\n", status
);
1858 static ssize_t
hotkey_enable_store(struct device
*dev
,
1859 struct device_attribute
*attr
,
1860 const char *buf
, size_t count
)
1865 if (parse_strtoul(buf
, 1, &t
))
1868 res
= hotkey_status_set(t
);
1870 return (res
) ? res
: count
;
1873 static struct device_attribute dev_attr_hotkey_enable
=
1874 __ATTR(hotkey_enable
, S_IWUSR
| S_IRUGO
,
1875 hotkey_enable_show
, hotkey_enable_store
);
1877 /* sysfs hotkey mask --------------------------------------------------- */
1878 static ssize_t
hotkey_mask_show(struct device
*dev
,
1879 struct device_attribute
*attr
,
1884 if (mutex_lock_killable(&hotkey_mutex
))
1885 return -ERESTARTSYS
;
1886 res
= hotkey_mask_get();
1887 mutex_unlock(&hotkey_mutex
);
1890 res
: snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_mask
);
1893 static ssize_t
hotkey_mask_store(struct device
*dev
,
1894 struct device_attribute
*attr
,
1895 const char *buf
, size_t count
)
1900 if (parse_strtoul(buf
, 0xffffffffUL
, &t
))
1903 if (mutex_lock_killable(&hotkey_mutex
))
1904 return -ERESTARTSYS
;
1906 res
= hotkey_mask_set(t
);
1908 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1909 hotkey_poll_setup(1);
1912 mutex_unlock(&hotkey_mutex
);
1914 return (res
) ? res
: count
;
1917 static struct device_attribute dev_attr_hotkey_mask
=
1918 __ATTR(hotkey_mask
, S_IWUSR
| S_IRUGO
,
1919 hotkey_mask_show
, hotkey_mask_store
);
1921 /* sysfs hotkey bios_enabled ------------------------------------------- */
1922 static ssize_t
hotkey_bios_enabled_show(struct device
*dev
,
1923 struct device_attribute
*attr
,
1926 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_orig_status
);
1929 static struct device_attribute dev_attr_hotkey_bios_enabled
=
1930 __ATTR(hotkey_bios_enabled
, S_IRUGO
, hotkey_bios_enabled_show
, NULL
);
1932 /* sysfs hotkey bios_mask ---------------------------------------------- */
1933 static ssize_t
hotkey_bios_mask_show(struct device
*dev
,
1934 struct device_attribute
*attr
,
1937 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_orig_mask
);
1940 static struct device_attribute dev_attr_hotkey_bios_mask
=
1941 __ATTR(hotkey_bios_mask
, S_IRUGO
, hotkey_bios_mask_show
, NULL
);
1943 /* sysfs hotkey all_mask ----------------------------------------------- */
1944 static ssize_t
hotkey_all_mask_show(struct device
*dev
,
1945 struct device_attribute
*attr
,
1948 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
1949 hotkey_all_mask
| hotkey_source_mask
);
1952 static struct device_attribute dev_attr_hotkey_all_mask
=
1953 __ATTR(hotkey_all_mask
, S_IRUGO
, hotkey_all_mask_show
, NULL
);
1955 /* sysfs hotkey recommended_mask --------------------------------------- */
1956 static ssize_t
hotkey_recommended_mask_show(struct device
*dev
,
1957 struct device_attribute
*attr
,
1960 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
1961 (hotkey_all_mask
| hotkey_source_mask
)
1962 & ~hotkey_reserved_mask
);
1965 static struct device_attribute dev_attr_hotkey_recommended_mask
=
1966 __ATTR(hotkey_recommended_mask
, S_IRUGO
,
1967 hotkey_recommended_mask_show
, NULL
);
1969 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1971 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
1972 static ssize_t
hotkey_source_mask_show(struct device
*dev
,
1973 struct device_attribute
*attr
,
1976 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_source_mask
);
1979 static ssize_t
hotkey_source_mask_store(struct device
*dev
,
1980 struct device_attribute
*attr
,
1981 const char *buf
, size_t count
)
1985 if (parse_strtoul(buf
, 0xffffffffUL
, &t
) ||
1986 ((t
& ~TPACPI_HKEY_NVRAM_KNOWN_MASK
) != 0))
1989 if (mutex_lock_killable(&hotkey_mutex
))
1990 return -ERESTARTSYS
;
1992 HOTKEY_CONFIG_CRITICAL_START
1993 hotkey_source_mask
= t
;
1994 HOTKEY_CONFIG_CRITICAL_END
1996 hotkey_poll_setup(1);
1998 mutex_unlock(&hotkey_mutex
);
2003 static struct device_attribute dev_attr_hotkey_source_mask
=
2004 __ATTR(hotkey_source_mask
, S_IWUSR
| S_IRUGO
,
2005 hotkey_source_mask_show
, hotkey_source_mask_store
);
2007 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2008 static ssize_t
hotkey_poll_freq_show(struct device
*dev
,
2009 struct device_attribute
*attr
,
2012 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_poll_freq
);
2015 static ssize_t
hotkey_poll_freq_store(struct device
*dev
,
2016 struct device_attribute
*attr
,
2017 const char *buf
, size_t count
)
2021 if (parse_strtoul(buf
, 25, &t
))
2024 if (mutex_lock_killable(&hotkey_mutex
))
2025 return -ERESTARTSYS
;
2027 hotkey_poll_freq
= t
;
2029 hotkey_poll_setup(1);
2030 mutex_unlock(&hotkey_mutex
);
2035 static struct device_attribute dev_attr_hotkey_poll_freq
=
2036 __ATTR(hotkey_poll_freq
, S_IWUSR
| S_IRUGO
,
2037 hotkey_poll_freq_show
, hotkey_poll_freq_store
);
2039 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2041 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
2042 static ssize_t
hotkey_radio_sw_show(struct device
*dev
,
2043 struct device_attribute
*attr
,
2047 res
= hotkey_get_wlsw(&s
);
2051 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!s
);
2054 static struct device_attribute dev_attr_hotkey_radio_sw
=
2055 __ATTR(hotkey_radio_sw
, S_IRUGO
, hotkey_radio_sw_show
, NULL
);
2057 static void hotkey_radio_sw_notify_change(void)
2059 if (tp_features
.hotkey_wlsw
)
2060 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2064 /* sysfs hotkey tablet mode (pollable) --------------------------------- */
2065 static ssize_t
hotkey_tablet_mode_show(struct device
*dev
,
2066 struct device_attribute
*attr
,
2070 res
= hotkey_get_tablet_mode(&s
);
2074 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!s
);
2077 static struct device_attribute dev_attr_hotkey_tablet_mode
=
2078 __ATTR(hotkey_tablet_mode
, S_IRUGO
, hotkey_tablet_mode_show
, NULL
);
2080 static void hotkey_tablet_mode_notify_change(void)
2082 if (tp_features
.hotkey_tablet
)
2083 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2084 "hotkey_tablet_mode");
2087 /* sysfs hotkey report_mode -------------------------------------------- */
2088 static ssize_t
hotkey_report_mode_show(struct device
*dev
,
2089 struct device_attribute
*attr
,
2092 return snprintf(buf
, PAGE_SIZE
, "%d\n",
2093 (hotkey_report_mode
!= 0) ? hotkey_report_mode
: 1);
2096 static struct device_attribute dev_attr_hotkey_report_mode
=
2097 __ATTR(hotkey_report_mode
, S_IRUGO
, hotkey_report_mode_show
, NULL
);
2099 /* sysfs wakeup reason (pollable) -------------------------------------- */
2100 static ssize_t
hotkey_wakeup_reason_show(struct device
*dev
,
2101 struct device_attribute
*attr
,
2104 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_wakeup_reason
);
2107 static struct device_attribute dev_attr_hotkey_wakeup_reason
=
2108 __ATTR(wakeup_reason
, S_IRUGO
, hotkey_wakeup_reason_show
, NULL
);
2110 static void hotkey_wakeup_reason_notify_change(void)
2112 if (tp_features
.hotkey_mask
)
2113 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2117 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
2118 static ssize_t
hotkey_wakeup_hotunplug_complete_show(struct device
*dev
,
2119 struct device_attribute
*attr
,
2122 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_autosleep_ack
);
2125 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete
=
2126 __ATTR(wakeup_hotunplug_complete
, S_IRUGO
,
2127 hotkey_wakeup_hotunplug_complete_show
, NULL
);
2129 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
2131 if (tp_features
.hotkey_mask
)
2132 sysfs_notify(&tpacpi_pdev
->dev
.kobj
, NULL
,
2133 "wakeup_hotunplug_complete");
2136 /* --------------------------------------------------------------------- */
2138 static struct attribute
*hotkey_attributes
[] __initdata
= {
2139 &dev_attr_hotkey_enable
.attr
,
2140 &dev_attr_hotkey_bios_enabled
.attr
,
2141 &dev_attr_hotkey_report_mode
.attr
,
2142 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2143 &dev_attr_hotkey_mask
.attr
,
2144 &dev_attr_hotkey_all_mask
.attr
,
2145 &dev_attr_hotkey_recommended_mask
.attr
,
2146 &dev_attr_hotkey_source_mask
.attr
,
2147 &dev_attr_hotkey_poll_freq
.attr
,
2151 static struct attribute
*hotkey_mask_attributes
[] __initdata
= {
2152 &dev_attr_hotkey_bios_mask
.attr
,
2153 #ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2154 &dev_attr_hotkey_mask
.attr
,
2155 &dev_attr_hotkey_all_mask
.attr
,
2156 &dev_attr_hotkey_recommended_mask
.attr
,
2158 &dev_attr_hotkey_wakeup_reason
.attr
,
2159 &dev_attr_hotkey_wakeup_hotunplug_complete
.attr
,
2162 static void bluetooth_update_rfk(void);
2163 static void wan_update_rfk(void);
2164 static void uwb_update_rfk(void);
2165 static void tpacpi_send_radiosw_update(void)
2169 /* Sync these BEFORE sending any rfkill events */
2170 if (tp_features
.bluetooth
)
2171 bluetooth_update_rfk();
2172 if (tp_features
.wan
)
2174 if (tp_features
.uwb
)
2177 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&wlsw
)) {
2178 mutex_lock(&tpacpi_inputdev_send_mutex
);
2180 input_report_switch(tpacpi_inputdev
,
2181 SW_RFKILL_ALL
, !!wlsw
);
2182 input_sync(tpacpi_inputdev
);
2184 mutex_unlock(&tpacpi_inputdev_send_mutex
);
2186 hotkey_radio_sw_notify_change();
2189 static void hotkey_exit(void)
2191 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2192 hotkey_poll_stop_sync();
2195 if (hotkey_dev_attributes
)
2196 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
2198 kfree(hotkey_keycode_map
);
2200 if (tp_features
.hotkey
) {
2201 dbg_printk(TPACPI_DBG_EXIT
,
2202 "restoring original hot key mask\n");
2203 /* no short-circuit boolean operator below! */
2204 if ((hotkey_mask_set(hotkey_orig_mask
) |
2205 hotkey_status_set(hotkey_orig_status
)) != 0)
2207 "failed to restore hot key mask "
2208 "to BIOS defaults\n");
2212 static int __init
hotkey_init(struct ibm_init_struct
*iibm
)
2214 /* Requirements for changing the default keymaps:
2216 * 1. Many of the keys are mapped to KEY_RESERVED for very
2217 * good reasons. Do not change them unless you have deep
2218 * knowledge on the IBM and Lenovo ThinkPad firmware for
2219 * the various ThinkPad models. The driver behaves
2220 * differently for KEY_RESERVED: such keys have their
2221 * hot key mask *unset* in mask_recommended, and also
2222 * in the initial hot key mask programmed into the
2223 * firmware at driver load time, which means the firm-
2224 * ware may react very differently if you change them to
2227 * 2. You must be subscribed to the linux-thinkpad and
2228 * ibm-acpi-devel mailing lists, and you should read the
2229 * list archives since 2007 if you want to change the
2230 * keymaps. This requirement exists so that you will
2231 * know the past history of problems with the thinkpad-
2232 * acpi driver keymaps, and also that you will be
2233 * listening to any bug reports;
2235 * 3. Do not send thinkpad-acpi specific patches directly to
2236 * for merging, *ever*. Send them to the linux-acpi
2237 * mailinglist for comments. Merging is to be done only
2238 * through acpi-test and the ACPI maintainer.
2240 * If the above is too much to ask, don't change the keymap.
2241 * Ask the thinkpad-acpi maintainer to do it, instead.
2243 static u16 ibm_keycode_map
[] __initdata
= {
2244 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2245 KEY_FN_F1
, KEY_FN_F2
, KEY_COFFEE
, KEY_SLEEP
,
2246 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
2247 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
2249 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
2250 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
2251 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
2252 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
2254 /* brightness: firmware always reacts to them, unless
2255 * X.org did some tricks in the radeon BIOS scratch
2256 * registers of *some* models */
2257 KEY_RESERVED
, /* 0x0F: FN+HOME (brightness up) */
2258 KEY_RESERVED
, /* 0x10: FN+END (brightness down) */
2260 /* Thinklight: firmware always react to it */
2261 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
2263 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
2264 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
2266 /* Volume: firmware always react to it and reprograms
2267 * the built-in *extra* mixer. Never map it to control
2268 * another mixer by default. */
2269 KEY_RESERVED
, /* 0x14: VOLUME UP */
2270 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
2271 KEY_RESERVED
, /* 0x16: MUTE */
2273 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2275 /* (assignments unknown, please report if found) */
2276 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
2277 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
2279 static u16 lenovo_keycode_map
[] __initdata
= {
2280 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2281 KEY_FN_F1
, KEY_COFFEE
, KEY_BATTERY
, KEY_SLEEP
,
2282 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
2283 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
2285 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
2286 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
2287 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
2288 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
2290 /* These either have to go through ACPI video, or
2291 * act like in the IBM ThinkPads, so don't ever
2292 * enable them by default */
2293 KEY_RESERVED
, /* 0x0F: FN+HOME (brightness up) */
2294 KEY_RESERVED
, /* 0x10: FN+END (brightness down) */
2296 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
2298 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
2299 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
2301 /* Volume: z60/z61, T60 (BIOS version?): firmware always
2302 * react to it and reprograms the built-in *extra* mixer.
2303 * Never map it to control another mixer by default.
2305 * T60?, T61, R60?, R61: firmware and EC tries to send
2306 * these over the regular keyboard, so these are no-ops,
2307 * but there are still weird bugs re. MUTE, so do not
2308 * change unless you get test reports from all Lenovo
2309 * models. May cause the BIOS to interfere with the
2312 KEY_RESERVED
, /* 0x14: VOLUME UP */
2313 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
2314 KEY_RESERVED
, /* 0x16: MUTE */
2316 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2318 /* (assignments unknown, please report if found) */
2319 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
2320 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
2323 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
2324 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
2325 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
2331 vdbg_printk(TPACPI_DBG_INIT
, "initializing hotkey subdriver\n");
2333 BUG_ON(!tpacpi_inputdev
);
2334 BUG_ON(tpacpi_inputdev
->open
!= NULL
||
2335 tpacpi_inputdev
->close
!= NULL
);
2337 TPACPI_ACPIHANDLE_INIT(hkey
);
2338 mutex_init(&hotkey_mutex
);
2340 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2341 mutex_init(&hotkey_thread_mutex
);
2342 mutex_init(&hotkey_thread_data_mutex
);
2345 /* hotkey not supported on 570 */
2346 tp_features
.hotkey
= hkey_handle
!= NULL
;
2348 vdbg_printk(TPACPI_DBG_INIT
, "hotkeys are %s\n",
2349 str_supported(tp_features
.hotkey
));
2351 if (!tp_features
.hotkey
)
2354 tpacpi_disable_brightness_delay();
2356 hotkey_dev_attributes
= create_attr_set(13, NULL
);
2357 if (!hotkey_dev_attributes
)
2359 res
= add_many_to_attr_set(hotkey_dev_attributes
,
2361 ARRAY_SIZE(hotkey_attributes
));
2365 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2366 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
2367 for HKEY interface version 0x100 */
2368 if (acpi_evalf(hkey_handle
, &hkeyv
, "MHKV", "qd")) {
2369 if ((hkeyv
>> 8) != 1) {
2370 printk(TPACPI_ERR
"unknown version of the "
2371 "HKEY interface: 0x%x\n", hkeyv
);
2372 printk(TPACPI_ERR
"please report this to %s\n",
2376 * MHKV 0x100 in A31, R40, R40e,
2377 * T4x, X31, and later
2379 tp_features
.hotkey_mask
= 1;
2383 vdbg_printk(TPACPI_DBG_INIT
, "hotkey masks are %s\n",
2384 str_supported(tp_features
.hotkey_mask
));
2386 if (tp_features
.hotkey_mask
) {
2387 if (!acpi_evalf(hkey_handle
, &hotkey_all_mask
,
2390 "missing MHKA handler, "
2391 "please report this to %s\n",
2393 /* FN+F12, FN+F4, FN+F3 */
2394 hotkey_all_mask
= 0x080cU
;
2398 /* hotkey_source_mask *must* be zero for
2399 * the first hotkey_mask_get */
2400 res
= hotkey_status_get(&hotkey_orig_status
);
2404 if (tp_features
.hotkey_mask
) {
2405 res
= hotkey_mask_get();
2409 hotkey_orig_mask
= hotkey_mask
;
2410 res
= add_many_to_attr_set(
2411 hotkey_dev_attributes
,
2412 hotkey_mask_attributes
,
2413 ARRAY_SIZE(hotkey_mask_attributes
));
2418 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2419 if (tp_features
.hotkey_mask
) {
2420 hotkey_source_mask
= TPACPI_HKEY_NVRAM_GOOD_MASK
2423 hotkey_source_mask
= TPACPI_HKEY_NVRAM_GOOD_MASK
;
2426 vdbg_printk(TPACPI_DBG_INIT
,
2427 "hotkey source mask 0x%08x, polling freq %d\n",
2428 hotkey_source_mask
, hotkey_poll_freq
);
2431 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
2433 tp_features
.hotkey_wlsw
= 1;
2435 "radio switch emulation enabled\n");
2438 /* Not all thinkpads have a hardware radio switch */
2439 if (acpi_evalf(hkey_handle
, &status
, "WLSW", "qd")) {
2440 tp_features
.hotkey_wlsw
= 1;
2442 "radio switch found; radios are %s\n",
2443 enabled(status
, 0));
2445 if (tp_features
.hotkey_wlsw
)
2446 res
= add_to_attr_set(hotkey_dev_attributes
,
2447 &dev_attr_hotkey_radio_sw
.attr
);
2449 /* For X41t, X60t, X61t Tablets... */
2450 if (!res
&& acpi_evalf(hkey_handle
, &status
, "MHKG", "qd")) {
2451 tp_features
.hotkey_tablet
= 1;
2453 "possible tablet mode switch found; "
2454 "ThinkPad in %s mode\n",
2455 (status
& TP_HOTKEY_TABLET_MASK
)?
2456 "tablet" : "laptop");
2457 res
= add_to_attr_set(hotkey_dev_attributes
,
2458 &dev_attr_hotkey_tablet_mode
.attr
);
2462 res
= register_attr_set_with_sysfs(
2463 hotkey_dev_attributes
,
2464 &tpacpi_pdev
->dev
.kobj
);
2468 /* Set up key map */
2470 hotkey_keycode_map
= kmalloc(TPACPI_HOTKEY_MAP_SIZE
,
2472 if (!hotkey_keycode_map
) {
2474 "failed to allocate memory for key map\n");
2479 if (thinkpad_id
.vendor
== PCI_VENDOR_ID_LENOVO
) {
2480 dbg_printk(TPACPI_DBG_INIT
,
2481 "using Lenovo default hot key map\n");
2482 memcpy(hotkey_keycode_map
, &lenovo_keycode_map
,
2483 TPACPI_HOTKEY_MAP_SIZE
);
2485 dbg_printk(TPACPI_DBG_INIT
,
2486 "using IBM default hot key map\n");
2487 memcpy(hotkey_keycode_map
, &ibm_keycode_map
,
2488 TPACPI_HOTKEY_MAP_SIZE
);
2491 set_bit(EV_KEY
, tpacpi_inputdev
->evbit
);
2492 set_bit(EV_MSC
, tpacpi_inputdev
->evbit
);
2493 set_bit(MSC_SCAN
, tpacpi_inputdev
->mscbit
);
2494 tpacpi_inputdev
->keycodesize
= TPACPI_HOTKEY_MAP_TYPESIZE
;
2495 tpacpi_inputdev
->keycodemax
= TPACPI_HOTKEY_MAP_LEN
;
2496 tpacpi_inputdev
->keycode
= hotkey_keycode_map
;
2497 for (i
= 0; i
< TPACPI_HOTKEY_MAP_LEN
; i
++) {
2498 if (hotkey_keycode_map
[i
] != KEY_RESERVED
) {
2499 set_bit(hotkey_keycode_map
[i
],
2500 tpacpi_inputdev
->keybit
);
2502 if (i
< sizeof(hotkey_reserved_mask
)*8)
2503 hotkey_reserved_mask
|= 1 << i
;
2507 if (tp_features
.hotkey_wlsw
) {
2508 set_bit(EV_SW
, tpacpi_inputdev
->evbit
);
2509 set_bit(SW_RFKILL_ALL
, tpacpi_inputdev
->swbit
);
2511 if (tp_features
.hotkey_tablet
) {
2512 set_bit(EV_SW
, tpacpi_inputdev
->evbit
);
2513 set_bit(SW_TABLET_MODE
, tpacpi_inputdev
->swbit
);
2516 /* Do not issue duplicate brightness change events to
2518 if (!tp_features
.bright_acpimode
)
2519 /* update bright_acpimode... */
2520 tpacpi_check_std_acpi_brightness_support();
2522 if (tp_features
.bright_acpimode
) {
2524 "This ThinkPad has standard ACPI backlight "
2525 "brightness control, supported by the ACPI "
2527 printk(TPACPI_NOTICE
2528 "Disabling thinkpad-acpi brightness events "
2531 /* The hotkey_reserved_mask change below is not
2532 * necessary while the keys are at KEY_RESERVED in the
2533 * default map, but better safe than sorry, leave it
2534 * here as a marker of what we have to do, especially
2535 * when we finally become able to set this at runtime
2536 * on response to X.org requests */
2537 hotkey_reserved_mask
|=
2538 (1 << TP_ACPI_HOTKEYSCAN_FNHOME
)
2539 | (1 << TP_ACPI_HOTKEYSCAN_FNEND
);
2542 dbg_printk(TPACPI_DBG_INIT
, "enabling hot key handling\n");
2543 res
= hotkey_status_set(1);
2548 res
= hotkey_mask_set(((hotkey_all_mask
| hotkey_source_mask
)
2549 & ~hotkey_reserved_mask
)
2550 | hotkey_orig_mask
);
2551 if (res
< 0 && res
!= -ENXIO
) {
2556 dbg_printk(TPACPI_DBG_INIT
,
2557 "legacy hot key reporting over procfs %s\n",
2558 (hotkey_report_mode
< 2) ?
2559 "enabled" : "disabled");
2561 tpacpi_inputdev
->open
= &hotkey_inputdev_open
;
2562 tpacpi_inputdev
->close
= &hotkey_inputdev_close
;
2564 hotkey_poll_setup_safe(1);
2565 tpacpi_send_radiosw_update();
2566 tpacpi_input_send_tabletsw();
2571 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
2572 hotkey_dev_attributes
= NULL
;
2574 return (res
< 0)? res
: 1;
2577 static bool hotkey_notify_hotkey(const u32 hkey
,
2579 bool *ignore_acpi_ev
)
2581 /* 0x1000-0x1FFF: key presses */
2582 unsigned int scancode
= hkey
& 0xfff;
2583 *send_acpi_ev
= true;
2584 *ignore_acpi_ev
= false;
2586 if (scancode
> 0 && scancode
< 0x21) {
2588 if (!(hotkey_source_mask
& (1 << scancode
))) {
2589 tpacpi_input_send_key(scancode
);
2590 *send_acpi_ev
= false;
2592 *ignore_acpi_ev
= true;
2599 static bool hotkey_notify_wakeup(const u32 hkey
,
2601 bool *ignore_acpi_ev
)
2603 /* 0x2000-0x2FFF: Wakeup reason */
2604 *send_acpi_ev
= true;
2605 *ignore_acpi_ev
= false;
2608 case 0x2304: /* suspend, undock */
2609 case 0x2404: /* hibernation, undock */
2610 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_UNDOCK
;
2611 *ignore_acpi_ev
= true;
2614 case 0x2305: /* suspend, bay eject */
2615 case 0x2405: /* hibernation, bay eject */
2616 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_BAYEJ
;
2617 *ignore_acpi_ev
= true;
2620 case 0x2313: /* Battery on critical low level (S3) */
2621 case 0x2413: /* Battery on critical low level (S4) */
2623 "EMERGENCY WAKEUP: battery almost empty\n");
2624 /* how to auto-heal: */
2625 /* 2313: woke up from S3, go to S4/S5 */
2626 /* 2413: woke up from S4, go to S5 */
2633 if (hotkey_wakeup_reason
!= TP_ACPI_WAKEUP_NONE
) {
2635 "woke up due to a hot-unplug "
2637 hotkey_wakeup_reason_notify_change();
2642 static bool hotkey_notify_usrevent(const u32 hkey
,
2644 bool *ignore_acpi_ev
)
2646 /* 0x5000-0x5FFF: human interface helpers */
2647 *send_acpi_ev
= true;
2648 *ignore_acpi_ev
= false;
2651 case 0x5010: /* Lenovo new BIOS: brightness changed */
2652 case 0x500b: /* X61t: tablet pen inserted into bay */
2653 case 0x500c: /* X61t: tablet pen removed from bay */
2656 case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
2657 case 0x500a: /* X41t-X61t: swivel down (normal mode) */
2658 tpacpi_input_send_tabletsw();
2659 hotkey_tablet_mode_notify_change();
2660 *send_acpi_ev
= false;
2665 /* LID switch events. Do not propagate */
2666 *ignore_acpi_ev
= true;
2674 static bool hotkey_notify_thermal(const u32 hkey
,
2676 bool *ignore_acpi_ev
)
2678 /* 0x6000-0x6FFF: thermal alarms */
2679 *send_acpi_ev
= true;
2680 *ignore_acpi_ev
= false;
2685 "THERMAL ALARM: battery is too hot!\n");
2686 /* recommended action: warn user through gui */
2690 "THERMAL EMERGENCY: battery is extremely hot!\n");
2691 /* recommended action: immediate sleep/hibernate */
2696 "a sensor reports something is too hot!\n");
2697 /* recommended action: warn user through gui, that */
2698 /* some internal component is too hot */
2702 "THERMAL EMERGENCY: "
2703 "a sensor reports something is extremely hot!\n");
2704 /* recommended action: immediate sleep/hibernate */
2708 "EC reports that Thermal Table has changed\n");
2709 /* recommended action: do nothing, we don't have
2710 * Lenovo ATM information */
2714 "THERMAL ALERT: unknown thermal alarm received\n");
2719 static void hotkey_notify(struct ibm_struct
*ibm
, u32 event
)
2723 bool ignore_acpi_ev
;
2726 if (event
!= 0x80) {
2728 "unknown HKEY notification event %d\n", event
);
2729 /* forward it to userspace, maybe it knows how to handle it */
2730 acpi_bus_generate_netlink_event(
2731 ibm
->acpi
->device
->pnp
.device_class
,
2732 dev_name(&ibm
->acpi
->device
->dev
),
2738 if (!acpi_evalf(hkey_handle
, &hkey
, "MHKP", "d")) {
2739 printk(TPACPI_ERR
"failed to retrieve HKEY event\n");
2748 send_acpi_ev
= true;
2749 ignore_acpi_ev
= false;
2751 switch (hkey
>> 12) {
2753 /* 0x1000-0x1FFF: key presses */
2754 known_ev
= hotkey_notify_hotkey(hkey
, &send_acpi_ev
,
2758 /* 0x2000-0x2FFF: Wakeup reason */
2759 known_ev
= hotkey_notify_wakeup(hkey
, &send_acpi_ev
,
2763 /* 0x3000-0x3FFF: bay-related wakeups */
2764 if (hkey
== 0x3003) {
2765 hotkey_autosleep_ack
= 1;
2768 hotkey_wakeup_hotunplug_complete_notify_change();
2775 /* 0x4000-0x4FFF: dock-related wakeups */
2776 if (hkey
== 0x4003) {
2777 hotkey_autosleep_ack
= 1;
2780 hotkey_wakeup_hotunplug_complete_notify_change();
2787 /* 0x5000-0x5FFF: human interface helpers */
2788 known_ev
= hotkey_notify_usrevent(hkey
, &send_acpi_ev
,
2792 /* 0x6000-0x6FFF: thermal alarms */
2793 known_ev
= hotkey_notify_thermal(hkey
, &send_acpi_ev
,
2797 /* 0x7000-0x7FFF: misc */
2798 if (tp_features
.hotkey_wlsw
&& hkey
== 0x7000) {
2799 tpacpi_send_radiosw_update();
2804 /* fallthrough to default */
2809 printk(TPACPI_NOTICE
2810 "unhandled HKEY event 0x%04x\n", hkey
);
2811 printk(TPACPI_NOTICE
2812 "please report the conditions when this "
2813 "event happened to %s\n", TPACPI_MAIL
);
2817 if (!ignore_acpi_ev
&&
2818 (send_acpi_ev
|| hotkey_report_mode
< 2)) {
2819 acpi_bus_generate_proc_event(ibm
->acpi
->device
,
2823 /* netlink events */
2824 if (!ignore_acpi_ev
&& send_acpi_ev
) {
2825 acpi_bus_generate_netlink_event(
2826 ibm
->acpi
->device
->pnp
.device_class
,
2827 dev_name(&ibm
->acpi
->device
->dev
),
2833 static void hotkey_suspend(pm_message_t state
)
2835 /* Do these on suspend, we get the events on early resume! */
2836 hotkey_wakeup_reason
= TP_ACPI_WAKEUP_NONE
;
2837 hotkey_autosleep_ack
= 0;
2840 static void hotkey_resume(void)
2842 tpacpi_disable_brightness_delay();
2844 if (hotkey_mask_get())
2846 "error while trying to read hot key mask "
2848 tpacpi_send_radiosw_update();
2849 hotkey_tablet_mode_notify_change();
2850 hotkey_wakeup_reason_notify_change();
2851 hotkey_wakeup_hotunplug_complete_notify_change();
2852 hotkey_poll_setup_safe(0);
2855 /* procfs -------------------------------------------------------------- */
2856 static int hotkey_read(char *p
)
2861 if (!tp_features
.hotkey
) {
2862 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
2866 if (mutex_lock_killable(&hotkey_mutex
))
2867 return -ERESTARTSYS
;
2868 res
= hotkey_status_get(&status
);
2870 res
= hotkey_mask_get();
2871 mutex_unlock(&hotkey_mutex
);
2875 len
+= sprintf(p
+ len
, "status:\t\t%s\n", enabled(status
, 0));
2876 if (tp_features
.hotkey_mask
) {
2877 len
+= sprintf(p
+ len
, "mask:\t\t0x%08x\n", hotkey_mask
);
2878 len
+= sprintf(p
+ len
,
2879 "commands:\tenable, disable, reset, <mask>\n");
2881 len
+= sprintf(p
+ len
, "mask:\t\tnot supported\n");
2882 len
+= sprintf(p
+ len
, "commands:\tenable, disable, reset\n");
2888 static int hotkey_write(char *buf
)
2894 if (!tp_features
.hotkey
)
2897 if (mutex_lock_killable(&hotkey_mutex
))
2898 return -ERESTARTSYS
;
2904 while ((cmd
= next_cmd(&buf
))) {
2905 if (strlencmp(cmd
, "enable") == 0) {
2907 } else if (strlencmp(cmd
, "disable") == 0) {
2909 } else if (strlencmp(cmd
, "reset") == 0) {
2910 status
= hotkey_orig_status
;
2911 mask
= hotkey_orig_mask
;
2912 } else if (sscanf(cmd
, "0x%x", &mask
) == 1) {
2914 } else if (sscanf(cmd
, "%x", &mask
) == 1) {
2922 res
= hotkey_status_set(status
);
2924 if (!res
&& mask
!= hotkey_mask
)
2925 res
= hotkey_mask_set(mask
);
2928 mutex_unlock(&hotkey_mutex
);
2932 static const struct acpi_device_id ibm_htk_device_ids
[] = {
2933 {TPACPI_ACPI_HKEY_HID
, 0},
2937 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
= {
2938 .hid
= ibm_htk_device_ids
,
2939 .notify
= hotkey_notify
,
2940 .handle
= &hkey_handle
,
2941 .type
= ACPI_DEVICE_NOTIFY
,
2944 static struct ibm_struct hotkey_driver_data
= {
2946 .read
= hotkey_read
,
2947 .write
= hotkey_write
,
2948 .exit
= hotkey_exit
,
2949 .resume
= hotkey_resume
,
2950 .suspend
= hotkey_suspend
,
2951 .acpi
= &ibm_hotkey_acpidriver
,
2954 /*************************************************************************
2955 * Bluetooth subdriver
2959 /* ACPI GBDC/SBDC bits */
2960 TP_ACPI_BLUETOOTH_HWPRESENT
= 0x01, /* Bluetooth hw available */
2961 TP_ACPI_BLUETOOTH_RADIOSSW
= 0x02, /* Bluetooth radio enabled */
2962 TP_ACPI_BLUETOOTH_RESUMECTRL
= 0x04, /* Bluetooth state at resume:
2967 /* ACPI \BLTH commands */
2968 TP_ACPI_BLTH_GET_ULTRAPORT_ID
= 0x00, /* Get Ultraport BT ID */
2969 TP_ACPI_BLTH_GET_PWR_ON_RESUME
= 0x01, /* Get power-on-resume state */
2970 TP_ACPI_BLTH_PWR_ON_ON_RESUME
= 0x02, /* Resume powered on */
2971 TP_ACPI_BLTH_PWR_OFF_ON_RESUME
= 0x03, /* Resume powered off */
2972 TP_ACPI_BLTH_SAVE_STATE
= 0x05, /* Save state for S4/S5 */
2975 static struct rfkill
*tpacpi_bluetooth_rfkill
;
2977 static void bluetooth_suspend(pm_message_t state
)
2979 /* Try to make sure radio will resume powered off */
2980 acpi_evalf(NULL
, NULL
, "\\BLTH", "vd",
2981 TP_ACPI_BLTH_PWR_OFF_ON_RESUME
);
2984 static int bluetooth_get_radiosw(void)
2988 if (!tp_features
.bluetooth
)
2991 /* WLSW overrides bluetooth in firmware/hardware, reflect that */
2992 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
)
2993 return RFKILL_STATE_HARD_BLOCKED
;
2995 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
2996 if (dbg_bluetoothemul
)
2997 return (tpacpi_bluetooth_emulstate
) ?
2998 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3001 if (!acpi_evalf(hkey_handle
, &status
, "GBDC", "d"))
3004 return ((status
& TP_ACPI_BLUETOOTH_RADIOSSW
) != 0) ?
3005 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3008 static void bluetooth_update_rfk(void)
3012 if (!tpacpi_bluetooth_rfkill
)
3015 status
= bluetooth_get_radiosw();
3018 rfkill_force_state(tpacpi_bluetooth_rfkill
, status
);
3021 static int bluetooth_set_radiosw(int radio_on
, int update_rfk
)
3025 if (!tp_features
.bluetooth
)
3028 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3029 * reason to risk weird behaviour. */
3030 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
3034 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3035 if (dbg_bluetoothemul
) {
3036 tpacpi_bluetooth_emulstate
= !!radio_on
;
3038 bluetooth_update_rfk();
3043 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
3045 status
= TP_ACPI_BLUETOOTH_RADIOSSW
;
3048 if (!acpi_evalf(hkey_handle
, NULL
, "SBDC", "vd", status
))
3052 bluetooth_update_rfk();
3057 /* sysfs bluetooth enable ---------------------------------------------- */
3058 static ssize_t
bluetooth_enable_show(struct device
*dev
,
3059 struct device_attribute
*attr
,
3064 status
= bluetooth_get_radiosw();
3068 return snprintf(buf
, PAGE_SIZE
, "%d\n",
3069 (status
== RFKILL_STATE_UNBLOCKED
) ? 1 : 0);
3072 static ssize_t
bluetooth_enable_store(struct device
*dev
,
3073 struct device_attribute
*attr
,
3074 const char *buf
, size_t count
)
3079 if (parse_strtoul(buf
, 1, &t
))
3082 res
= bluetooth_set_radiosw(t
, 1);
3084 return (res
) ? res
: count
;
3087 static struct device_attribute dev_attr_bluetooth_enable
=
3088 __ATTR(bluetooth_enable
, S_IWUSR
| S_IRUGO
,
3089 bluetooth_enable_show
, bluetooth_enable_store
);
3091 /* --------------------------------------------------------------------- */
3093 static struct attribute
*bluetooth_attributes
[] = {
3094 &dev_attr_bluetooth_enable
.attr
,
3098 static const struct attribute_group bluetooth_attr_group
= {
3099 .attrs
= bluetooth_attributes
,
3102 static int tpacpi_bluetooth_rfk_get(void *data
, enum rfkill_state
*state
)
3104 int bts
= bluetooth_get_radiosw();
3113 static int tpacpi_bluetooth_rfk_set(void *data
, enum rfkill_state state
)
3115 return bluetooth_set_radiosw((state
== RFKILL_STATE_UNBLOCKED
), 0);
3118 static void bluetooth_shutdown(void)
3120 /* Order firmware to save current state to NVRAM */
3121 if (!acpi_evalf(NULL
, NULL
, "\\BLTH", "vd",
3122 TP_ACPI_BLTH_SAVE_STATE
))
3123 printk(TPACPI_NOTICE
3124 "failed to save bluetooth state to NVRAM\n");
3127 static void bluetooth_exit(void)
3129 bluetooth_shutdown();
3131 if (tpacpi_bluetooth_rfkill
)
3132 rfkill_unregister(tpacpi_bluetooth_rfkill
);
3134 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
3135 &bluetooth_attr_group
);
3138 static int __init
bluetooth_init(struct ibm_init_struct
*iibm
)
3143 vdbg_printk(TPACPI_DBG_INIT
, "initializing bluetooth subdriver\n");
3145 TPACPI_ACPIHANDLE_INIT(hkey
);
3147 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3148 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
3149 tp_features
.bluetooth
= hkey_handle
&&
3150 acpi_evalf(hkey_handle
, &status
, "GBDC", "qd");
3152 vdbg_printk(TPACPI_DBG_INIT
, "bluetooth is %s, status 0x%02x\n",
3153 str_supported(tp_features
.bluetooth
),
3156 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3157 if (dbg_bluetoothemul
) {
3158 tp_features
.bluetooth
= 1;
3160 "bluetooth switch emulation enabled\n");
3163 if (tp_features
.bluetooth
&&
3164 !(status
& TP_ACPI_BLUETOOTH_HWPRESENT
)) {
3165 /* no bluetooth hardware present in system */
3166 tp_features
.bluetooth
= 0;
3167 dbg_printk(TPACPI_DBG_INIT
,
3168 "bluetooth hardware not installed\n");
3171 if (!tp_features
.bluetooth
)
3174 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
3175 &bluetooth_attr_group
);
3179 res
= tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID
,
3180 &tpacpi_bluetooth_rfkill
,
3181 RFKILL_TYPE_BLUETOOTH
,
3182 "tpacpi_bluetooth_sw",
3184 tpacpi_bluetooth_rfk_set
,
3185 tpacpi_bluetooth_rfk_get
);
3194 /* procfs -------------------------------------------------------------- */
3195 static int bluetooth_read(char *p
)
3198 int status
= bluetooth_get_radiosw();
3200 if (!tp_features
.bluetooth
)
3201 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
3203 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
3204 (status
== RFKILL_STATE_UNBLOCKED
) ?
3205 "enabled" : "disabled");
3206 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n");
3212 static int bluetooth_write(char *buf
)
3216 if (!tp_features
.bluetooth
)
3219 while ((cmd
= next_cmd(&buf
))) {
3220 if (strlencmp(cmd
, "enable") == 0) {
3221 bluetooth_set_radiosw(1, 1);
3222 } else if (strlencmp(cmd
, "disable") == 0) {
3223 bluetooth_set_radiosw(0, 1);
3231 static struct ibm_struct bluetooth_driver_data
= {
3232 .name
= "bluetooth",
3233 .read
= bluetooth_read
,
3234 .write
= bluetooth_write
,
3235 .exit
= bluetooth_exit
,
3236 .suspend
= bluetooth_suspend
,
3237 .shutdown
= bluetooth_shutdown
,
3240 /*************************************************************************
3245 /* ACPI GWAN/SWAN bits */
3246 TP_ACPI_WANCARD_HWPRESENT
= 0x01, /* Wan hw available */
3247 TP_ACPI_WANCARD_RADIOSSW
= 0x02, /* Wan radio enabled */
3248 TP_ACPI_WANCARD_RESUMECTRL
= 0x04, /* Wan state at resume:
3252 static struct rfkill
*tpacpi_wan_rfkill
;
3254 static void wan_suspend(pm_message_t state
)
3256 /* Try to make sure radio will resume powered off */
3257 acpi_evalf(NULL
, NULL
, "\\WGSV", "qvd",
3258 TP_ACPI_WGSV_PWR_OFF_ON_RESUME
);
3261 static int wan_get_radiosw(void)
3265 if (!tp_features
.wan
)
3268 /* WLSW overrides WWAN in firmware/hardware, reflect that */
3269 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
)
3270 return RFKILL_STATE_HARD_BLOCKED
;
3272 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3274 return (tpacpi_wwan_emulstate
) ?
3275 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3278 if (!acpi_evalf(hkey_handle
, &status
, "GWAN", "d"))
3281 return ((status
& TP_ACPI_WANCARD_RADIOSSW
) != 0) ?
3282 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3285 static void wan_update_rfk(void)
3289 if (!tpacpi_wan_rfkill
)
3292 status
= wan_get_radiosw();
3295 rfkill_force_state(tpacpi_wan_rfkill
, status
);
3298 static int wan_set_radiosw(int radio_on
, int update_rfk
)
3302 if (!tp_features
.wan
)
3305 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3306 * reason to risk weird behaviour. */
3307 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
3311 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3313 tpacpi_wwan_emulstate
= !!radio_on
;
3320 /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
3322 status
= TP_ACPI_WANCARD_RADIOSSW
;
3325 if (!acpi_evalf(hkey_handle
, NULL
, "SWAN", "vd", status
))
3334 /* sysfs wan enable ---------------------------------------------------- */
3335 static ssize_t
wan_enable_show(struct device
*dev
,
3336 struct device_attribute
*attr
,
3341 status
= wan_get_radiosw();
3345 return snprintf(buf
, PAGE_SIZE
, "%d\n",
3346 (status
== RFKILL_STATE_UNBLOCKED
) ? 1 : 0);
3349 static ssize_t
wan_enable_store(struct device
*dev
,
3350 struct device_attribute
*attr
,
3351 const char *buf
, size_t count
)
3356 if (parse_strtoul(buf
, 1, &t
))
3359 res
= wan_set_radiosw(t
, 1);
3361 return (res
) ? res
: count
;
3364 static struct device_attribute dev_attr_wan_enable
=
3365 __ATTR(wwan_enable
, S_IWUSR
| S_IRUGO
,
3366 wan_enable_show
, wan_enable_store
);
3368 /* --------------------------------------------------------------------- */
3370 static struct attribute
*wan_attributes
[] = {
3371 &dev_attr_wan_enable
.attr
,
3375 static const struct attribute_group wan_attr_group
= {
3376 .attrs
= wan_attributes
,
3379 static int tpacpi_wan_rfk_get(void *data
, enum rfkill_state
*state
)
3381 int wans
= wan_get_radiosw();
3390 static int tpacpi_wan_rfk_set(void *data
, enum rfkill_state state
)
3392 return wan_set_radiosw((state
== RFKILL_STATE_UNBLOCKED
), 0);
3395 static void wan_shutdown(void)
3397 /* Order firmware to save current state to NVRAM */
3398 if (!acpi_evalf(NULL
, NULL
, "\\WGSV", "vd",
3399 TP_ACPI_WGSV_SAVE_STATE
))
3400 printk(TPACPI_NOTICE
3401 "failed to save WWAN state to NVRAM\n");
3404 static void wan_exit(void)
3408 if (tpacpi_wan_rfkill
)
3409 rfkill_unregister(tpacpi_wan_rfkill
);
3411 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
3415 static int __init
wan_init(struct ibm_init_struct
*iibm
)
3420 vdbg_printk(TPACPI_DBG_INIT
, "initializing wan subdriver\n");
3422 TPACPI_ACPIHANDLE_INIT(hkey
);
3424 tp_features
.wan
= hkey_handle
&&
3425 acpi_evalf(hkey_handle
, &status
, "GWAN", "qd");
3427 vdbg_printk(TPACPI_DBG_INIT
, "wan is %s, status 0x%02x\n",
3428 str_supported(tp_features
.wan
),
3431 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3433 tp_features
.wan
= 1;
3435 "wwan switch emulation enabled\n");
3438 if (tp_features
.wan
&&
3439 !(status
& TP_ACPI_WANCARD_HWPRESENT
)) {
3440 /* no wan hardware present in system */
3441 tp_features
.wan
= 0;
3442 dbg_printk(TPACPI_DBG_INIT
,
3443 "wan hardware not installed\n");
3446 if (!tp_features
.wan
)
3449 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
3454 res
= tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID
,
3460 tpacpi_wan_rfk_get
);
3469 /* procfs -------------------------------------------------------------- */
3470 static int wan_read(char *p
)
3473 int status
= wan_get_radiosw();
3475 if (!tp_features
.wan
)
3476 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
3478 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
3479 (status
== RFKILL_STATE_UNBLOCKED
) ?
3480 "enabled" : "disabled");
3481 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n");
3487 static int wan_write(char *buf
)
3491 if (!tp_features
.wan
)
3494 while ((cmd
= next_cmd(&buf
))) {
3495 if (strlencmp(cmd
, "enable") == 0) {
3496 wan_set_radiosw(1, 1);
3497 } else if (strlencmp(cmd
, "disable") == 0) {
3498 wan_set_radiosw(0, 1);
3506 static struct ibm_struct wan_driver_data
= {
3511 .suspend
= wan_suspend
,
3512 .shutdown
= wan_shutdown
,
3515 /*************************************************************************
3520 /* ACPI GUWB/SUWB bits */
3521 TP_ACPI_UWB_HWPRESENT
= 0x01, /* UWB hw available */
3522 TP_ACPI_UWB_RADIOSSW
= 0x02, /* UWB radio enabled */
3525 static struct rfkill
*tpacpi_uwb_rfkill
;
3527 static int uwb_get_radiosw(void)
3531 if (!tp_features
.uwb
)
3534 /* WLSW overrides UWB in firmware/hardware, reflect that */
3535 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
)
3536 return RFKILL_STATE_HARD_BLOCKED
;
3538 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3540 return (tpacpi_uwb_emulstate
) ?
3541 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3544 if (!acpi_evalf(hkey_handle
, &status
, "GUWB", "d"))
3547 return ((status
& TP_ACPI_UWB_RADIOSSW
) != 0) ?
3548 RFKILL_STATE_UNBLOCKED
: RFKILL_STATE_SOFT_BLOCKED
;
3551 static void uwb_update_rfk(void)
3555 if (!tpacpi_uwb_rfkill
)
3558 status
= uwb_get_radiosw();
3561 rfkill_force_state(tpacpi_uwb_rfkill
, status
);
3564 static int uwb_set_radiosw(int radio_on
, int update_rfk
)
3568 if (!tp_features
.uwb
)
3571 /* WLSW overrides UWB in firmware/hardware, but there is no
3572 * reason to risk weird behaviour. */
3573 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&status
) && !status
3577 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3579 tpacpi_uwb_emulstate
= !!radio_on
;
3586 status
= (radio_on
) ? TP_ACPI_UWB_RADIOSSW
: 0;
3587 if (!acpi_evalf(hkey_handle
, NULL
, "SUWB", "vd", status
))
3596 /* --------------------------------------------------------------------- */
3598 static int tpacpi_uwb_rfk_get(void *data
, enum rfkill_state
*state
)
3600 int uwbs
= uwb_get_radiosw();
3609 static int tpacpi_uwb_rfk_set(void *data
, enum rfkill_state state
)
3611 return uwb_set_radiosw((state
== RFKILL_STATE_UNBLOCKED
), 0);
3614 static void uwb_exit(void)
3616 if (tpacpi_uwb_rfkill
)
3617 rfkill_unregister(tpacpi_uwb_rfkill
);
3620 static int __init
uwb_init(struct ibm_init_struct
*iibm
)
3625 vdbg_printk(TPACPI_DBG_INIT
, "initializing uwb subdriver\n");
3627 TPACPI_ACPIHANDLE_INIT(hkey
);
3629 tp_features
.uwb
= hkey_handle
&&
3630 acpi_evalf(hkey_handle
, &status
, "GUWB", "qd");
3632 vdbg_printk(TPACPI_DBG_INIT
, "uwb is %s, status 0x%02x\n",
3633 str_supported(tp_features
.uwb
),
3636 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3638 tp_features
.uwb
= 1;
3640 "uwb switch emulation enabled\n");
3643 if (tp_features
.uwb
&&
3644 !(status
& TP_ACPI_UWB_HWPRESENT
)) {
3645 /* no uwb hardware present in system */
3646 tp_features
.uwb
= 0;
3647 dbg_printk(TPACPI_DBG_INIT
,
3648 "uwb hardware not installed\n");
3651 if (!tp_features
.uwb
)
3654 res
= tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID
,
3660 tpacpi_uwb_rfk_get
);
3665 static struct ibm_struct uwb_driver_data
= {
3668 .flags
.experimental
= 1,
3671 /*************************************************************************
3675 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
3677 enum video_access_mode
{
3678 TPACPI_VIDEO_NONE
= 0,
3679 TPACPI_VIDEO_570
, /* 570 */
3680 TPACPI_VIDEO_770
, /* 600e/x, 770e, 770x */
3681 TPACPI_VIDEO_NEW
, /* all others */
3684 enum { /* video status flags, based on VIDEO_570 */
3685 TP_ACPI_VIDEO_S_LCD
= 0x01, /* LCD output enabled */
3686 TP_ACPI_VIDEO_S_CRT
= 0x02, /* CRT output enabled */
3687 TP_ACPI_VIDEO_S_DVI
= 0x08, /* DVI output enabled */
3690 enum { /* TPACPI_VIDEO_570 constants */
3691 TP_ACPI_VIDEO_570_PHSCMD
= 0x87, /* unknown magic constant :( */
3692 TP_ACPI_VIDEO_570_PHSMASK
= 0x03, /* PHS bits that map to
3693 * video_status_flags */
3694 TP_ACPI_VIDEO_570_PHS2CMD
= 0x8b, /* unknown magic constant :( */
3695 TP_ACPI_VIDEO_570_PHS2SET
= 0x80, /* unknown magic constant :( */
3698 static enum video_access_mode video_supported
;
3699 static int video_orig_autosw
;
3701 static int video_autosw_get(void);
3702 static int video_autosw_set(int enable
);
3704 TPACPI_HANDLE(vid2
, root
, "\\_SB.PCI0.AGPB.VID"); /* G41 */
3706 static int __init
video_init(struct ibm_init_struct
*iibm
)
3710 vdbg_printk(TPACPI_DBG_INIT
, "initializing video subdriver\n");
3712 TPACPI_ACPIHANDLE_INIT(vid
);
3713 TPACPI_ACPIHANDLE_INIT(vid2
);
3715 if (vid2_handle
&& acpi_evalf(NULL
, &ivga
, "\\IVGA", "d") && ivga
)
3716 /* G41, assume IVGA doesn't change */
3717 vid_handle
= vid2_handle
;
3720 /* video switching not supported on R30, R31 */
3721 video_supported
= TPACPI_VIDEO_NONE
;
3722 else if (acpi_evalf(vid_handle
, &video_orig_autosw
, "SWIT", "qd"))
3724 video_supported
= TPACPI_VIDEO_570
;
3725 else if (acpi_evalf(vid_handle
, &video_orig_autosw
, "^VADL", "qd"))
3726 /* 600e/x, 770e, 770x */
3727 video_supported
= TPACPI_VIDEO_770
;
3730 video_supported
= TPACPI_VIDEO_NEW
;
3732 vdbg_printk(TPACPI_DBG_INIT
, "video is %s, mode %d\n",
3733 str_supported(video_supported
!= TPACPI_VIDEO_NONE
),
3736 return (video_supported
!= TPACPI_VIDEO_NONE
)? 0 : 1;
3739 static void video_exit(void)
3741 dbg_printk(TPACPI_DBG_EXIT
,
3742 "restoring original video autoswitch mode\n");
3743 if (video_autosw_set(video_orig_autosw
))
3744 printk(TPACPI_ERR
"error while trying to restore original "
3745 "video autoswitch mode\n");
3748 static int video_outputsw_get(void)
3753 switch (video_supported
) {
3754 case TPACPI_VIDEO_570
:
3755 if (!acpi_evalf(NULL
, &i
, "\\_SB.PHS", "dd",
3756 TP_ACPI_VIDEO_570_PHSCMD
))
3758 status
= i
& TP_ACPI_VIDEO_570_PHSMASK
;
3760 case TPACPI_VIDEO_770
:
3761 if (!acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
3764 status
|= TP_ACPI_VIDEO_S_LCD
;
3765 if (!acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
3768 status
|= TP_ACPI_VIDEO_S_CRT
;
3770 case TPACPI_VIDEO_NEW
:
3771 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 1) ||
3772 !acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
3775 status
|= TP_ACPI_VIDEO_S_CRT
;
3777 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0) ||
3778 !acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
3781 status
|= TP_ACPI_VIDEO_S_LCD
;
3782 if (!acpi_evalf(NULL
, &i
, "\\VCDD", "d"))
3785 status
|= TP_ACPI_VIDEO_S_DVI
;
3794 static int video_outputsw_set(int status
)
3799 switch (video_supported
) {
3800 case TPACPI_VIDEO_570
:
3801 res
= acpi_evalf(NULL
, NULL
,
3802 "\\_SB.PHS2", "vdd",
3803 TP_ACPI_VIDEO_570_PHS2CMD
,
3804 status
| TP_ACPI_VIDEO_570_PHS2SET
);
3806 case TPACPI_VIDEO_770
:
3807 autosw
= video_autosw_get();
3811 res
= video_autosw_set(1);
3814 res
= acpi_evalf(vid_handle
, NULL
,
3815 "ASWT", "vdd", status
* 0x100, 0);
3816 if (!autosw
&& video_autosw_set(autosw
)) {
3818 "video auto-switch left enabled due to error\n");
3822 case TPACPI_VIDEO_NEW
:
3823 res
= acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0x80) &&
3824 acpi_evalf(NULL
, NULL
, "\\VSDS", "vdd", status
, 1);
3830 return (res
)? 0 : -EIO
;
3833 static int video_autosw_get(void)
3837 switch (video_supported
) {
3838 case TPACPI_VIDEO_570
:
3839 if (!acpi_evalf(vid_handle
, &autosw
, "SWIT", "d"))
3842 case TPACPI_VIDEO_770
:
3843 case TPACPI_VIDEO_NEW
:
3844 if (!acpi_evalf(vid_handle
, &autosw
, "^VDEE", "d"))
3854 static int video_autosw_set(int enable
)
3856 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", (enable
)? 1 : 0))
3861 static int video_outputsw_cycle(void)
3863 int autosw
= video_autosw_get();
3869 switch (video_supported
) {
3870 case TPACPI_VIDEO_570
:
3871 res
= video_autosw_set(1);
3874 res
= acpi_evalf(ec_handle
, NULL
, "_Q16", "v");
3876 case TPACPI_VIDEO_770
:
3877 case TPACPI_VIDEO_NEW
:
3878 res
= video_autosw_set(1);
3881 res
= acpi_evalf(vid_handle
, NULL
, "VSWT", "v");
3886 if (!autosw
&& video_autosw_set(autosw
)) {
3888 "video auto-switch left enabled due to error\n");
3892 return (res
)? 0 : -EIO
;
3895 static int video_expand_toggle(void)
3897 switch (video_supported
) {
3898 case TPACPI_VIDEO_570
:
3899 return acpi_evalf(ec_handle
, NULL
, "_Q17", "v")?
3901 case TPACPI_VIDEO_770
:
3902 return acpi_evalf(vid_handle
, NULL
, "VEXP", "v")?
3904 case TPACPI_VIDEO_NEW
:
3905 return acpi_evalf(NULL
, NULL
, "\\VEXP", "v")?
3913 static int video_read(char *p
)
3918 if (video_supported
== TPACPI_VIDEO_NONE
) {
3919 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
3923 status
= video_outputsw_get();
3927 autosw
= video_autosw_get();
3931 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
3932 len
+= sprintf(p
+ len
, "lcd:\t\t%s\n", enabled(status
, 0));
3933 len
+= sprintf(p
+ len
, "crt:\t\t%s\n", enabled(status
, 1));
3934 if (video_supported
== TPACPI_VIDEO_NEW
)
3935 len
+= sprintf(p
+ len
, "dvi:\t\t%s\n", enabled(status
, 3));
3936 len
+= sprintf(p
+ len
, "auto:\t\t%s\n", enabled(autosw
, 0));
3937 len
+= sprintf(p
+ len
, "commands:\tlcd_enable, lcd_disable\n");
3938 len
+= sprintf(p
+ len
, "commands:\tcrt_enable, crt_disable\n");
3939 if (video_supported
== TPACPI_VIDEO_NEW
)
3940 len
+= sprintf(p
+ len
, "commands:\tdvi_enable, dvi_disable\n");
3941 len
+= sprintf(p
+ len
, "commands:\tauto_enable, auto_disable\n");
3942 len
+= sprintf(p
+ len
, "commands:\tvideo_switch, expand_toggle\n");
3947 static int video_write(char *buf
)
3950 int enable
, disable
, status
;
3953 if (video_supported
== TPACPI_VIDEO_NONE
)
3959 while ((cmd
= next_cmd(&buf
))) {
3960 if (strlencmp(cmd
, "lcd_enable") == 0) {
3961 enable
|= TP_ACPI_VIDEO_S_LCD
;
3962 } else if (strlencmp(cmd
, "lcd_disable") == 0) {
3963 disable
|= TP_ACPI_VIDEO_S_LCD
;
3964 } else if (strlencmp(cmd
, "crt_enable") == 0) {
3965 enable
|= TP_ACPI_VIDEO_S_CRT
;
3966 } else if (strlencmp(cmd
, "crt_disable") == 0) {
3967 disable
|= TP_ACPI_VIDEO_S_CRT
;
3968 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
3969 strlencmp(cmd
, "dvi_enable") == 0) {
3970 enable
|= TP_ACPI_VIDEO_S_DVI
;
3971 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
3972 strlencmp(cmd
, "dvi_disable") == 0) {
3973 disable
|= TP_ACPI_VIDEO_S_DVI
;
3974 } else if (strlencmp(cmd
, "auto_enable") == 0) {
3975 res
= video_autosw_set(1);
3978 } else if (strlencmp(cmd
, "auto_disable") == 0) {
3979 res
= video_autosw_set(0);
3982 } else if (strlencmp(cmd
, "video_switch") == 0) {
3983 res
= video_outputsw_cycle();
3986 } else if (strlencmp(cmd
, "expand_toggle") == 0) {
3987 res
= video_expand_toggle();
3994 if (enable
|| disable
) {
3995 status
= video_outputsw_get();
3998 res
= video_outputsw_set((status
& ~disable
) | enable
);
4006 static struct ibm_struct video_driver_data
= {
4009 .write
= video_write
,
4013 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4015 /*************************************************************************
4016 * Light (thinklight) subdriver
4019 TPACPI_HANDLE(lght
, root
, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4020 TPACPI_HANDLE(ledb
, ec
, "LEDB"); /* G4x */
4022 static int light_get_status(void)
4026 if (tp_features
.light_status
) {
4027 if (!acpi_evalf(ec_handle
, &status
, "KBLT", "d"))
4035 static int light_set_status(int status
)
4039 if (tp_features
.light
) {
4041 rc
= acpi_evalf(cmos_handle
, NULL
, NULL
, "vd",
4043 TP_CMOS_THINKLIGHT_ON
:
4044 TP_CMOS_THINKLIGHT_OFF
);
4046 rc
= acpi_evalf(lght_handle
, NULL
, NULL
, "vd",
4049 return (rc
)? 0 : -EIO
;
4055 static void light_set_status_worker(struct work_struct
*work
)
4057 struct tpacpi_led_classdev
*data
=
4058 container_of(work
, struct tpacpi_led_classdev
, work
);
4060 if (likely(tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
))
4061 light_set_status((data
->new_brightness
!= LED_OFF
));
4064 static void light_sysfs_set(struct led_classdev
*led_cdev
,
4065 enum led_brightness brightness
)
4067 struct tpacpi_led_classdev
*data
=
4068 container_of(led_cdev
,
4069 struct tpacpi_led_classdev
,
4071 data
->new_brightness
= brightness
;
4072 queue_work(tpacpi_wq
, &data
->work
);
4075 static enum led_brightness
light_sysfs_get(struct led_classdev
*led_cdev
)
4077 return (light_get_status() == 1)? LED_FULL
: LED_OFF
;
4080 static struct tpacpi_led_classdev tpacpi_led_thinklight
= {
4082 .name
= "tpacpi::thinklight",
4083 .brightness_set
= &light_sysfs_set
,
4084 .brightness_get
= &light_sysfs_get
,
4088 static int __init
light_init(struct ibm_init_struct
*iibm
)
4092 vdbg_printk(TPACPI_DBG_INIT
, "initializing light subdriver\n");
4094 TPACPI_ACPIHANDLE_INIT(ledb
);
4095 TPACPI_ACPIHANDLE_INIT(lght
);
4096 TPACPI_ACPIHANDLE_INIT(cmos
);
4097 INIT_WORK(&tpacpi_led_thinklight
.work
, light_set_status_worker
);
4099 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
4100 tp_features
.light
= (cmos_handle
|| lght_handle
) && !ledb_handle
;
4102 if (tp_features
.light
)
4103 /* light status not supported on
4104 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
4105 tp_features
.light_status
=
4106 acpi_evalf(ec_handle
, NULL
, "KBLT", "qv");
4108 vdbg_printk(TPACPI_DBG_INIT
, "light is %s, light status is %s\n",
4109 str_supported(tp_features
.light
),
4110 str_supported(tp_features
.light_status
));
4112 if (!tp_features
.light
)
4115 rc
= led_classdev_register(&tpacpi_pdev
->dev
,
4116 &tpacpi_led_thinklight
.led_classdev
);
4119 tp_features
.light
= 0;
4120 tp_features
.light_status
= 0;
4128 static void light_exit(void)
4130 led_classdev_unregister(&tpacpi_led_thinklight
.led_classdev
);
4131 if (work_pending(&tpacpi_led_thinklight
.work
))
4132 flush_workqueue(tpacpi_wq
);
4135 static int light_read(char *p
)
4140 if (!tp_features
.light
) {
4141 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4142 } else if (!tp_features
.light_status
) {
4143 len
+= sprintf(p
+ len
, "status:\t\tunknown\n");
4144 len
+= sprintf(p
+ len
, "commands:\ton, off\n");
4146 status
= light_get_status();
4149 len
+= sprintf(p
+ len
, "status:\t\t%s\n", onoff(status
, 0));
4150 len
+= sprintf(p
+ len
, "commands:\ton, off\n");
4156 static int light_write(char *buf
)
4161 if (!tp_features
.light
)
4164 while ((cmd
= next_cmd(&buf
))) {
4165 if (strlencmp(cmd
, "on") == 0) {
4167 } else if (strlencmp(cmd
, "off") == 0) {
4173 return light_set_status(newstatus
);
4176 static struct ibm_struct light_driver_data
= {
4179 .write
= light_write
,
4183 /*************************************************************************
4187 #ifdef CONFIG_THINKPAD_ACPI_DOCK
4189 static void dock_notify(struct ibm_struct
*ibm
, u32 event
);
4190 static int dock_read(char *p
);
4191 static int dock_write(char *buf
);
4193 TPACPI_HANDLE(dock
, root
, "\\_SB.GDCK", /* X30, X31, X40 */
4194 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
4195 "\\_SB.PCI0.PCI1.DOCK", /* all others */
4196 "\\_SB.PCI.ISA.SLCE", /* 570 */
4197 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
4199 /* don't list other alternatives as we install a notify handler on the 570 */
4200 TPACPI_HANDLE(pci
, root
, "\\_SB.PCI"); /* 570 */
4202 static const struct acpi_device_id ibm_pci_device_ids
[] = {
4203 {PCI_ROOT_HID_STRING
, 0},
4207 static struct tp_acpi_drv_struct ibm_dock_acpidriver
[2] = {
4209 .notify
= dock_notify
,
4210 .handle
= &dock_handle
,
4211 .type
= ACPI_SYSTEM_NOTIFY
,
4214 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
4215 * We just use it to get notifications of dock hotplug
4216 * in very old thinkpads */
4217 .hid
= ibm_pci_device_ids
,
4218 .notify
= dock_notify
,
4219 .handle
= &pci_handle
,
4220 .type
= ACPI_SYSTEM_NOTIFY
,
4224 static struct ibm_struct dock_driver_data
[2] = {
4228 .write
= dock_write
,
4229 .acpi
= &ibm_dock_acpidriver
[0],
4233 .acpi
= &ibm_dock_acpidriver
[1],
4237 #define dock_docked() (_sta(dock_handle) & 1)
4239 static int __init
dock_init(struct ibm_init_struct
*iibm
)
4241 vdbg_printk(TPACPI_DBG_INIT
, "initializing dock subdriver\n");
4243 TPACPI_ACPIHANDLE_INIT(dock
);
4245 vdbg_printk(TPACPI_DBG_INIT
, "dock is %s\n",
4246 str_supported(dock_handle
!= NULL
));
4248 return (dock_handle
)? 0 : 1;
4251 static int __init
dock_init2(struct ibm_init_struct
*iibm
)
4255 vdbg_printk(TPACPI_DBG_INIT
, "initializing dock subdriver part 2\n");
4257 if (dock_driver_data
[0].flags
.acpi_driver_registered
&&
4258 dock_driver_data
[0].flags
.acpi_notify_installed
) {
4259 TPACPI_ACPIHANDLE_INIT(pci
);
4260 dock2_needed
= (pci_handle
!= NULL
);
4261 vdbg_printk(TPACPI_DBG_INIT
,
4262 "dock PCI handler for the TP 570 is %s\n",
4263 str_supported(dock2_needed
));
4265 vdbg_printk(TPACPI_DBG_INIT
,
4266 "dock subdriver part 2 not required\n");
4270 return (dock2_needed
)? 0 : 1;
4273 static void dock_notify(struct ibm_struct
*ibm
, u32 event
)
4275 int docked
= dock_docked();
4276 int pci
= ibm
->acpi
->hid
&& ibm
->acpi
->device
&&
4277 acpi_match_device_ids(ibm
->acpi
->device
, ibm_pci_device_ids
);
4280 if (event
== 1 && !pci
) /* 570 */
4281 data
= 1; /* button */
4282 else if (event
== 1 && pci
) /* 570 */
4283 data
= 3; /* dock */
4284 else if (event
== 3 && docked
)
4285 data
= 1; /* button */
4286 else if (event
== 3 && !docked
)
4287 data
= 2; /* undock */
4288 else if (event
== 0 && docked
)
4289 data
= 3; /* dock */
4291 printk(TPACPI_ERR
"unknown dock event %d, status %d\n",
4292 event
, _sta(dock_handle
));
4293 data
= 0; /* unknown */
4295 acpi_bus_generate_proc_event(ibm
->acpi
->device
, event
, data
);
4296 acpi_bus_generate_netlink_event(ibm
->acpi
->device
->pnp
.device_class
,
4297 dev_name(&ibm
->acpi
->device
->dev
),
4301 static int dock_read(char *p
)
4304 int docked
= dock_docked();
4307 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4309 len
+= sprintf(p
+ len
, "status:\t\tundocked\n");
4311 len
+= sprintf(p
+ len
, "status:\t\tdocked\n");
4312 len
+= sprintf(p
+ len
, "commands:\tdock, undock\n");
4318 static int dock_write(char *buf
)
4325 while ((cmd
= next_cmd(&buf
))) {
4326 if (strlencmp(cmd
, "undock") == 0) {
4327 if (!acpi_evalf(dock_handle
, NULL
, "_DCK", "vd", 0) ||
4328 !acpi_evalf(dock_handle
, NULL
, "_EJ0", "vd", 1))
4330 } else if (strlencmp(cmd
, "dock") == 0) {
4331 if (!acpi_evalf(dock_handle
, NULL
, "_DCK", "vd", 1))
4340 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
4342 /*************************************************************************
4346 #ifdef CONFIG_THINKPAD_ACPI_BAY
4348 TPACPI_HANDLE(bay
, root
, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
4349 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
4350 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
4351 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
4352 ); /* A21e, R30, R31 */
4353 TPACPI_HANDLE(bay_ej
, bay
, "_EJ3", /* 600e/x, A2xm/p, A3x */
4354 "_EJ0", /* all others */
4355 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
4356 TPACPI_HANDLE(bay2
, root
, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
4357 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
4359 TPACPI_HANDLE(bay2_ej
, bay2
, "_EJ3", /* 600e/x, 770e, A3x */
4363 static int __init
bay_init(struct ibm_init_struct
*iibm
)
4365 vdbg_printk(TPACPI_DBG_INIT
, "initializing bay subdriver\n");
4367 TPACPI_ACPIHANDLE_INIT(bay
);
4369 TPACPI_ACPIHANDLE_INIT(bay_ej
);
4370 TPACPI_ACPIHANDLE_INIT(bay2
);
4372 TPACPI_ACPIHANDLE_INIT(bay2_ej
);
4374 tp_features
.bay_status
= bay_handle
&&
4375 acpi_evalf(bay_handle
, NULL
, "_STA", "qv");
4376 tp_features
.bay_status2
= bay2_handle
&&
4377 acpi_evalf(bay2_handle
, NULL
, "_STA", "qv");
4379 tp_features
.bay_eject
= bay_handle
&& bay_ej_handle
&&
4380 (strlencmp(bay_ej_path
, "_EJ0") == 0 || experimental
);
4381 tp_features
.bay_eject2
= bay2_handle
&& bay2_ej_handle
&&
4382 (strlencmp(bay2_ej_path
, "_EJ0") == 0 || experimental
);
4384 vdbg_printk(TPACPI_DBG_INIT
,
4385 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
4386 str_supported(tp_features
.bay_status
),
4387 str_supported(tp_features
.bay_eject
),
4388 str_supported(tp_features
.bay_status2
),
4389 str_supported(tp_features
.bay_eject2
));
4391 return (tp_features
.bay_status
|| tp_features
.bay_eject
||
4392 tp_features
.bay_status2
|| tp_features
.bay_eject2
)? 0 : 1;
4395 static void bay_notify(struct ibm_struct
*ibm
, u32 event
)
4397 acpi_bus_generate_proc_event(ibm
->acpi
->device
, event
, 0);
4398 acpi_bus_generate_netlink_event(ibm
->acpi
->device
->pnp
.device_class
,
4399 dev_name(&ibm
->acpi
->device
->dev
),
4403 #define bay_occupied(b) (_sta(b##_handle) & 1)
4405 static int bay_read(char *p
)
4408 int occupied
= bay_occupied(bay
);
4409 int occupied2
= bay_occupied(bay2
);
4412 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
4413 tp_features
.bay_status
?
4414 (occupied
? "occupied" : "unoccupied") :
4416 if (tp_features
.bay_status2
)
4417 len
+= sprintf(p
+ len
, "status2:\t%s\n", occupied2
?
4418 "occupied" : "unoccupied");
4420 eject
= tp_features
.bay_eject
&& occupied
;
4421 eject2
= tp_features
.bay_eject2
&& occupied2
;
4423 if (eject
&& eject2
)
4424 len
+= sprintf(p
+ len
, "commands:\teject, eject2\n");
4426 len
+= sprintf(p
+ len
, "commands:\teject\n");
4428 len
+= sprintf(p
+ len
, "commands:\teject2\n");
4433 static int bay_write(char *buf
)
4437 if (!tp_features
.bay_eject
&& !tp_features
.bay_eject2
)
4440 while ((cmd
= next_cmd(&buf
))) {
4441 if (tp_features
.bay_eject
&& strlencmp(cmd
, "eject") == 0) {
4442 if (!acpi_evalf(bay_ej_handle
, NULL
, NULL
, "vd", 1))
4444 } else if (tp_features
.bay_eject2
&&
4445 strlencmp(cmd
, "eject2") == 0) {
4446 if (!acpi_evalf(bay2_ej_handle
, NULL
, NULL
, "vd", 1))
4455 static struct tp_acpi_drv_struct ibm_bay_acpidriver
= {
4456 .notify
= bay_notify
,
4457 .handle
= &bay_handle
,
4458 .type
= ACPI_SYSTEM_NOTIFY
,
4461 static struct ibm_struct bay_driver_data
= {
4465 .acpi
= &ibm_bay_acpidriver
,
4468 #endif /* CONFIG_THINKPAD_ACPI_BAY */
4470 /*************************************************************************
4474 /* sysfs cmos_command -------------------------------------------------- */
4475 static ssize_t
cmos_command_store(struct device
*dev
,
4476 struct device_attribute
*attr
,
4477 const char *buf
, size_t count
)
4479 unsigned long cmos_cmd
;
4482 if (parse_strtoul(buf
, 21, &cmos_cmd
))
4485 res
= issue_thinkpad_cmos_command(cmos_cmd
);
4486 return (res
)? res
: count
;
4489 static struct device_attribute dev_attr_cmos_command
=
4490 __ATTR(cmos_command
, S_IWUSR
, NULL
, cmos_command_store
);
4492 /* --------------------------------------------------------------------- */
4494 static int __init
cmos_init(struct ibm_init_struct
*iibm
)
4498 vdbg_printk(TPACPI_DBG_INIT
,
4499 "initializing cmos commands subdriver\n");
4501 TPACPI_ACPIHANDLE_INIT(cmos
);
4503 vdbg_printk(TPACPI_DBG_INIT
, "cmos commands are %s\n",
4504 str_supported(cmos_handle
!= NULL
));
4506 res
= device_create_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4510 return (cmos_handle
)? 0 : 1;
4513 static void cmos_exit(void)
4515 device_remove_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
4518 static int cmos_read(char *p
)
4522 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4523 R30, R31, T20-22, X20-21 */
4525 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4527 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
4528 len
+= sprintf(p
+ len
, "commands:\t<cmd> (<cmd> is 0-21)\n");
4534 static int cmos_write(char *buf
)
4539 while ((cmd
= next_cmd(&buf
))) {
4540 if (sscanf(cmd
, "%u", &cmos_cmd
) == 1 &&
4541 cmos_cmd
>= 0 && cmos_cmd
<= 21) {
4546 res
= issue_thinkpad_cmos_command(cmos_cmd
);
4554 static struct ibm_struct cmos_driver_data
= {
4557 .write
= cmos_write
,
4561 /*************************************************************************
4565 enum led_access_mode
{
4566 TPACPI_LED_NONE
= 0,
4567 TPACPI_LED_570
, /* 570 */
4568 TPACPI_LED_OLD
, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4569 TPACPI_LED_NEW
, /* all others */
4572 enum { /* For TPACPI_LED_OLD */
4573 TPACPI_LED_EC_HLCL
= 0x0c, /* EC reg to get led to power on */
4574 TPACPI_LED_EC_HLBL
= 0x0d, /* EC reg to blink a lit led */
4575 TPACPI_LED_EC_HLMS
= 0x0e, /* EC reg to select led to command */
4584 static enum led_access_mode led_supported
;
4586 TPACPI_HANDLE(led
, ec
, "SLED", /* 570 */
4587 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
4588 /* T20-22, X20-21 */
4589 "LED", /* all others */
4592 #define TPACPI_LED_NUMLEDS 8
4593 static struct tpacpi_led_classdev
*tpacpi_leds
;
4594 static enum led_status_t tpacpi_led_state_cache
[TPACPI_LED_NUMLEDS
];
4595 static const char * const tpacpi_led_names
[TPACPI_LED_NUMLEDS
] = {
4596 /* there's a limit of 19 chars + NULL before 2.6.26 */
4598 "tpacpi:orange:batt",
4599 "tpacpi:green:batt",
4600 "tpacpi::dock_active",
4601 "tpacpi::bay_active",
4602 "tpacpi::dock_batt",
4603 "tpacpi::unknown_led",
4607 static int led_get_status(const unsigned int led
)
4610 enum led_status_t led_s
;
4612 switch (led_supported
) {
4613 case TPACPI_LED_570
:
4614 if (!acpi_evalf(ec_handle
,
4615 &status
, "GLED", "dd", 1 << led
))
4617 led_s
= (status
== 0)?
4622 tpacpi_led_state_cache
[led
] = led_s
;
4631 static int led_set_status(const unsigned int led
,
4632 const enum led_status_t ledstatus
)
4634 /* off, on, blink. Index is led_status_t */
4635 static const unsigned int led_sled_arg1
[] = { 0, 1, 3 };
4636 static const unsigned int led_led_arg1
[] = { 0, 0x80, 0xc0 };
4640 switch (led_supported
) {
4641 case TPACPI_LED_570
:
4645 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
4646 (1 << led
), led_sled_arg1
[ledstatus
]))
4649 case TPACPI_LED_OLD
:
4650 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
4653 rc
= ec_write(TPACPI_LED_EC_HLMS
, (1 << led
));
4655 rc
= ec_write(TPACPI_LED_EC_HLBL
,
4656 (ledstatus
== TPACPI_LED_BLINK
) << led
);
4658 rc
= ec_write(TPACPI_LED_EC_HLCL
,
4659 (ledstatus
!= TPACPI_LED_OFF
) << led
);
4661 case TPACPI_LED_NEW
:
4663 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
4664 led
, led_led_arg1
[ledstatus
]))
4672 tpacpi_led_state_cache
[led
] = ledstatus
;
4677 static void led_sysfs_set_status(unsigned int led
,
4678 enum led_brightness brightness
)
4681 (brightness
== LED_OFF
) ?
4683 (tpacpi_led_state_cache
[led
] == TPACPI_LED_BLINK
) ?
4684 TPACPI_LED_BLINK
: TPACPI_LED_ON
);
4687 static void led_set_status_worker(struct work_struct
*work
)
4689 struct tpacpi_led_classdev
*data
=
4690 container_of(work
, struct tpacpi_led_classdev
, work
);
4692 if (likely(tpacpi_lifecycle
== TPACPI_LIFE_RUNNING
))
4693 led_sysfs_set_status(data
->led
, data
->new_brightness
);
4696 static void led_sysfs_set(struct led_classdev
*led_cdev
,
4697 enum led_brightness brightness
)
4699 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
4700 struct tpacpi_led_classdev
, led_classdev
);
4702 data
->new_brightness
= brightness
;
4703 queue_work(tpacpi_wq
, &data
->work
);
4706 static int led_sysfs_blink_set(struct led_classdev
*led_cdev
,
4707 unsigned long *delay_on
, unsigned long *delay_off
)
4709 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
4710 struct tpacpi_led_classdev
, led_classdev
);
4712 /* Can we choose the flash rate? */
4713 if (*delay_on
== 0 && *delay_off
== 0) {
4714 /* yes. set them to the hardware blink rate (1 Hz) */
4715 *delay_on
= 500; /* ms */
4716 *delay_off
= 500; /* ms */
4717 } else if ((*delay_on
!= 500) || (*delay_off
!= 500))
4720 data
->new_brightness
= TPACPI_LED_BLINK
;
4721 queue_work(tpacpi_wq
, &data
->work
);
4726 static enum led_brightness
led_sysfs_get(struct led_classdev
*led_cdev
)
4730 struct tpacpi_led_classdev
*data
= container_of(led_cdev
,
4731 struct tpacpi_led_classdev
, led_classdev
);
4733 rc
= led_get_status(data
->led
);
4735 if (rc
== TPACPI_LED_OFF
|| rc
< 0)
4736 rc
= LED_OFF
; /* no error handling in led class :( */
4743 static void led_exit(void)
4747 for (i
= 0; i
< TPACPI_LED_NUMLEDS
; i
++) {
4748 if (tpacpi_leds
[i
].led_classdev
.name
)
4749 led_classdev_unregister(&tpacpi_leds
[i
].led_classdev
);
4755 static int __init
led_init(struct ibm_init_struct
*iibm
)
4760 vdbg_printk(TPACPI_DBG_INIT
, "initializing LED subdriver\n");
4762 TPACPI_ACPIHANDLE_INIT(led
);
4765 /* led not supported on R30, R31 */
4766 led_supported
= TPACPI_LED_NONE
;
4767 else if (strlencmp(led_path
, "SLED") == 0)
4769 led_supported
= TPACPI_LED_570
;
4770 else if (strlencmp(led_path
, "SYSL") == 0)
4771 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4772 led_supported
= TPACPI_LED_OLD
;
4775 led_supported
= TPACPI_LED_NEW
;
4777 vdbg_printk(TPACPI_DBG_INIT
, "LED commands are %s, mode %d\n",
4778 str_supported(led_supported
), led_supported
);
4780 tpacpi_leds
= kzalloc(sizeof(*tpacpi_leds
) * TPACPI_LED_NUMLEDS
,
4783 printk(TPACPI_ERR
"Out of memory for LED data\n");
4787 for (i
= 0; i
< TPACPI_LED_NUMLEDS
; i
++) {
4788 tpacpi_leds
[i
].led
= i
;
4790 tpacpi_leds
[i
].led_classdev
.brightness_set
= &led_sysfs_set
;
4791 tpacpi_leds
[i
].led_classdev
.blink_set
= &led_sysfs_blink_set
;
4792 if (led_supported
== TPACPI_LED_570
)
4793 tpacpi_leds
[i
].led_classdev
.brightness_get
=
4796 tpacpi_leds
[i
].led_classdev
.name
= tpacpi_led_names
[i
];
4798 INIT_WORK(&tpacpi_leds
[i
].work
, led_set_status_worker
);
4800 rc
= led_classdev_register(&tpacpi_pdev
->dev
,
4801 &tpacpi_leds
[i
].led_classdev
);
4803 tpacpi_leds
[i
].led_classdev
.name
= NULL
;
4809 return (led_supported
!= TPACPI_LED_NONE
)? 0 : 1;
4812 #define str_led_status(s) \
4813 ((s) == TPACPI_LED_OFF ? "off" : \
4814 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
4816 static int led_read(char *p
)
4820 if (!led_supported
) {
4821 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4824 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
4826 if (led_supported
== TPACPI_LED_570
) {
4829 for (i
= 0; i
< 8; i
++) {
4830 status
= led_get_status(i
);
4833 len
+= sprintf(p
+ len
, "%d:\t\t%s\n",
4834 i
, str_led_status(status
));
4838 len
+= sprintf(p
+ len
, "commands:\t"
4839 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
4844 static int led_write(char *buf
)
4848 enum led_status_t s
;
4853 while ((cmd
= next_cmd(&buf
))) {
4854 if (sscanf(cmd
, "%d", &led
) != 1 || led
< 0 || led
> 7)
4857 if (strstr(cmd
, "off")) {
4859 } else if (strstr(cmd
, "on")) {
4861 } else if (strstr(cmd
, "blink")) {
4862 s
= TPACPI_LED_BLINK
;
4867 rc
= led_set_status(led
, s
);
4875 static struct ibm_struct led_driver_data
= {
4882 /*************************************************************************
4886 TPACPI_HANDLE(beep
, ec
, "BEEP"); /* all except R30, R31 */
4888 static int __init
beep_init(struct ibm_init_struct
*iibm
)
4890 vdbg_printk(TPACPI_DBG_INIT
, "initializing beep subdriver\n");
4892 TPACPI_ACPIHANDLE_INIT(beep
);
4894 vdbg_printk(TPACPI_DBG_INIT
, "beep is %s\n",
4895 str_supported(beep_handle
!= NULL
));
4897 return (beep_handle
)? 0 : 1;
4900 static int beep_read(char *p
)
4905 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4907 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
4908 len
+= sprintf(p
+ len
, "commands:\t<cmd> (<cmd> is 0-17)\n");
4914 static int beep_write(char *buf
)
4922 while ((cmd
= next_cmd(&buf
))) {
4923 if (sscanf(cmd
, "%u", &beep_cmd
) == 1 &&
4924 beep_cmd
>= 0 && beep_cmd
<= 17) {
4928 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vdd", beep_cmd
, 0))
4935 static struct ibm_struct beep_driver_data
= {
4938 .write
= beep_write
,
4941 /*************************************************************************
4945 enum thermal_access_mode
{
4946 TPACPI_THERMAL_NONE
= 0, /* No thermal support */
4947 TPACPI_THERMAL_ACPI_TMP07
, /* Use ACPI TMP0-7 */
4948 TPACPI_THERMAL_ACPI_UPDT
, /* Use ACPI TMP0-7 with UPDT */
4949 TPACPI_THERMAL_TPEC_8
, /* Use ACPI EC regs, 8 sensors */
4950 TPACPI_THERMAL_TPEC_16
, /* Use ACPI EC regs, 16 sensors */
4953 enum { /* TPACPI_THERMAL_TPEC_* */
4954 TP_EC_THERMAL_TMP0
= 0x78, /* ACPI EC regs TMP 0..7 */
4955 TP_EC_THERMAL_TMP8
= 0xC0, /* ACPI EC regs TMP 8..15 */
4956 TP_EC_THERMAL_TMP_NA
= -128, /* ACPI EC sensor not available */
4959 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
4960 struct ibm_thermal_sensors_struct
{
4961 s32 temp
[TPACPI_MAX_THERMAL_SENSORS
];
4964 static enum thermal_access_mode thermal_read_mode
;
4966 /* idx is zero-based */
4967 static int thermal_get_sensor(int idx
, s32
*value
)
4973 t
= TP_EC_THERMAL_TMP0
;
4975 switch (thermal_read_mode
) {
4976 #if TPACPI_MAX_THERMAL_SENSORS >= 16
4977 case TPACPI_THERMAL_TPEC_16
:
4978 if (idx
>= 8 && idx
<= 15) {
4979 t
= TP_EC_THERMAL_TMP8
;
4984 case TPACPI_THERMAL_TPEC_8
:
4986 if (!acpi_ec_read(t
+ idx
, &tmp
))
4988 *value
= tmp
* 1000;
4993 case TPACPI_THERMAL_ACPI_UPDT
:
4995 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
4996 if (!acpi_evalf(ec_handle
, NULL
, "UPDT", "v"))
4998 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
5000 *value
= (t
- 2732) * 100;
5005 case TPACPI_THERMAL_ACPI_TMP07
:
5007 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
5008 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
5010 if (t
> 127 || t
< -127)
5011 t
= TP_EC_THERMAL_TMP_NA
;
5017 case TPACPI_THERMAL_NONE
:
5025 static int thermal_get_sensors(struct ibm_thermal_sensors_struct
*s
)
5036 if (thermal_read_mode
== TPACPI_THERMAL_TPEC_16
)
5039 for (i
= 0 ; i
< n
; i
++) {
5040 res
= thermal_get_sensor(i
, &s
->temp
[i
]);
5048 /* sysfs temp##_input -------------------------------------------------- */
5050 static ssize_t
thermal_temp_input_show(struct device
*dev
,
5051 struct device_attribute
*attr
,
5054 struct sensor_device_attribute
*sensor_attr
=
5055 to_sensor_dev_attr(attr
);
5056 int idx
= sensor_attr
->index
;
5060 res
= thermal_get_sensor(idx
, &value
);
5063 if (value
== TP_EC_THERMAL_TMP_NA
* 1000)
5066 return snprintf(buf
, PAGE_SIZE
, "%d\n", value
);
5069 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
5070 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5071 thermal_temp_input_show, NULL, _idxB)
5073 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input
[] = {
5074 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5075 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5076 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5077 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5078 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5079 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5080 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5081 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5082 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5083 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5084 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5085 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5086 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5087 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5088 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5089 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5092 #define THERMAL_ATTRS(X) \
5093 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5095 static struct attribute
*thermal_temp_input_attr
[] = {
5115 static const struct attribute_group thermal_temp_input16_group
= {
5116 .attrs
= thermal_temp_input_attr
5119 static const struct attribute_group thermal_temp_input8_group
= {
5120 .attrs
= &thermal_temp_input_attr
[8]
5123 #undef THERMAL_SENSOR_ATTR_TEMP
5124 #undef THERMAL_ATTRS
5126 /* --------------------------------------------------------------------- */
5128 static int __init
thermal_init(struct ibm_init_struct
*iibm
)
5135 vdbg_printk(TPACPI_DBG_INIT
, "initializing thermal subdriver\n");
5137 acpi_tmp7
= acpi_evalf(ec_handle
, NULL
, "TMP7", "qv");
5139 if (thinkpad_id
.ec_model
) {
5141 * Direct EC access mode: sensors at registers
5142 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5143 * non-implemented, thermal sensors return 0x80 when
5148 for (i
= 0; i
< 8; i
++) {
5149 if (acpi_ec_read(TP_EC_THERMAL_TMP0
+ i
, &t
)) {
5155 if (acpi_ec_read(TP_EC_THERMAL_TMP8
+ i
, &t
)) {
5163 /* This is sheer paranoia, but we handle it anyway */
5166 "ThinkPad ACPI EC access misbehaving, "
5167 "falling back to ACPI TMPx access "
5169 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5172 "ThinkPad ACPI EC access misbehaving, "
5173 "disabling thermal sensors access\n");
5174 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5179 TPACPI_THERMAL_TPEC_16
: TPACPI_THERMAL_TPEC_8
;
5181 } else if (acpi_tmp7
) {
5182 if (acpi_evalf(ec_handle
, NULL
, "UPDT", "qv")) {
5183 /* 600e/x, 770e, 770x */
5184 thermal_read_mode
= TPACPI_THERMAL_ACPI_UPDT
;
5186 /* Standard ACPI TMPx access, max 8 sensors */
5187 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
5190 /* temperatures not supported on 570, G4x, R30, R31, R32 */
5191 thermal_read_mode
= TPACPI_THERMAL_NONE
;
5194 vdbg_printk(TPACPI_DBG_INIT
, "thermal is %s, mode %d\n",
5195 str_supported(thermal_read_mode
!= TPACPI_THERMAL_NONE
),
5198 switch (thermal_read_mode
) {
5199 case TPACPI_THERMAL_TPEC_16
:
5200 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5201 &thermal_temp_input16_group
);
5205 case TPACPI_THERMAL_TPEC_8
:
5206 case TPACPI_THERMAL_ACPI_TMP07
:
5207 case TPACPI_THERMAL_ACPI_UPDT
:
5208 res
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5209 &thermal_temp_input8_group
);
5213 case TPACPI_THERMAL_NONE
:
5221 static void thermal_exit(void)
5223 switch (thermal_read_mode
) {
5224 case TPACPI_THERMAL_TPEC_16
:
5225 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5226 &thermal_temp_input16_group
);
5228 case TPACPI_THERMAL_TPEC_8
:
5229 case TPACPI_THERMAL_ACPI_TMP07
:
5230 case TPACPI_THERMAL_ACPI_UPDT
:
5231 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
5232 &thermal_temp_input16_group
);
5234 case TPACPI_THERMAL_NONE
:
5240 static int thermal_read(char *p
)
5244 struct ibm_thermal_sensors_struct t
;
5246 n
= thermal_get_sensors(&t
);
5247 if (unlikely(n
< 0))
5250 len
+= sprintf(p
+ len
, "temperatures:\t");
5253 for (i
= 0; i
< (n
- 1); i
++)
5254 len
+= sprintf(p
+ len
, "%d ", t
.temp
[i
] / 1000);
5255 len
+= sprintf(p
+ len
, "%d\n", t
.temp
[i
] / 1000);
5257 len
+= sprintf(p
+ len
, "not supported\n");
5262 static struct ibm_struct thermal_driver_data
= {
5264 .read
= thermal_read
,
5265 .exit
= thermal_exit
,
5268 /*************************************************************************
5272 static u8 ecdump_regs
[256];
5274 static int ecdump_read(char *p
)
5280 len
+= sprintf(p
+ len
, "EC "
5281 " +00 +01 +02 +03 +04 +05 +06 +07"
5282 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5283 for (i
= 0; i
< 256; i
+= 16) {
5284 len
+= sprintf(p
+ len
, "EC 0x%02x:", i
);
5285 for (j
= 0; j
< 16; j
++) {
5286 if (!acpi_ec_read(i
+ j
, &v
))
5288 if (v
!= ecdump_regs
[i
+ j
])
5289 len
+= sprintf(p
+ len
, " *%02x", v
);
5291 len
+= sprintf(p
+ len
, " %02x", v
);
5292 ecdump_regs
[i
+ j
] = v
;
5294 len
+= sprintf(p
+ len
, "\n");
5299 /* These are way too dangerous to advertise openly... */
5301 len
+= sprintf(p
+ len
, "commands:\t0x<offset> 0x<value>"
5302 " (<offset> is 00-ff, <value> is 00-ff)\n");
5303 len
+= sprintf(p
+ len
, "commands:\t0x<offset> <value> "
5304 " (<offset> is 00-ff, <value> is 0-255)\n");
5309 static int ecdump_write(char *buf
)
5314 while ((cmd
= next_cmd(&buf
))) {
5315 if (sscanf(cmd
, "0x%x 0x%x", &i
, &v
) == 2) {
5317 } else if (sscanf(cmd
, "0x%x %u", &i
, &v
) == 2) {
5321 if (i
>= 0 && i
< 256 && v
>= 0 && v
< 256) {
5322 if (!acpi_ec_write(i
, v
))
5331 static struct ibm_struct ecdump_driver_data
= {
5333 .read
= ecdump_read
,
5334 .write
= ecdump_write
,
5335 .flags
.experimental
= 1,
5338 /*************************************************************************
5339 * Backlight/brightness subdriver
5342 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5345 TP_EC_BACKLIGHT
= 0x31,
5347 /* TP_EC_BACKLIGHT bitmasks */
5348 TP_EC_BACKLIGHT_LVLMSK
= 0x1F,
5349 TP_EC_BACKLIGHT_CMDMSK
= 0xE0,
5350 TP_EC_BACKLIGHT_MAPSW
= 0x20,
5353 static struct backlight_device
*ibm_backlight_device
;
5354 static int brightness_mode
;
5355 static unsigned int brightness_enable
= 2; /* 2 = auto, 0 = no, 1 = yes */
5357 static struct mutex brightness_mutex
;
5360 * ThinkPads can read brightness from two places: EC 0x31, or
5361 * CMOS NVRAM byte 0x5E, bits 0-3.
5363 * EC 0x31 has the following layout
5364 * Bit 7: unknown function
5365 * Bit 6: unknown function
5366 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5367 * Bit 4: must be set to zero to avoid problems
5368 * Bit 3-0: backlight brightness level
5370 * brightness_get_raw returns status data in the EC 0x31 layout
5372 static int brightness_get_raw(int *status
)
5374 u8 lec
= 0, lcmos
= 0, level
= 0;
5376 if (brightness_mode
& 1) {
5377 if (!acpi_ec_read(TP_EC_BACKLIGHT
, &lec
))
5379 level
= lec
& TP_EC_BACKLIGHT_LVLMSK
;
5381 if (brightness_mode
& 2) {
5382 lcmos
= (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
)
5383 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
5384 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
5385 lcmos
&= (tp_features
.bright_16levels
)? 0x0f : 0x07;
5389 if (brightness_mode
== 3) {
5390 *status
= lec
; /* Prefer EC, CMOS is just a backing store */
5391 lec
&= TP_EC_BACKLIGHT_LVLMSK
;
5393 tp_warned
.bright_cmos_ec_unsync
= 0;
5395 if (!tp_warned
.bright_cmos_ec_unsync
) {
5397 "CMOS NVRAM (%u) and EC (%u) do not "
5398 "agree on display brightness level\n",
5399 (unsigned int) lcmos
,
5400 (unsigned int) lec
);
5401 tp_warned
.bright_cmos_ec_unsync
= 1;
5412 /* May return EINTR which can always be mapped to ERESTARTSYS */
5413 static int brightness_set(int value
)
5415 int cmos_cmd
, inc
, i
, res
;
5419 if (value
> ((tp_features
.bright_16levels
)? 15 : 7) ||
5423 res
= mutex_lock_killable(&brightness_mutex
);
5427 res
= brightness_get_raw(¤t_value
);
5431 command_bits
= current_value
& TP_EC_BACKLIGHT_CMDMSK
;
5432 current_value
&= TP_EC_BACKLIGHT_LVLMSK
;
5434 cmos_cmd
= value
> current_value
?
5435 TP_CMOS_BRIGHTNESS_UP
:
5436 TP_CMOS_BRIGHTNESS_DOWN
;
5437 inc
= (value
> current_value
)? 1 : -1;
5440 for (i
= current_value
; i
!= value
; i
+= inc
) {
5441 if ((brightness_mode
& 2) &&
5442 issue_thinkpad_cmos_command(cmos_cmd
)) {
5446 if ((brightness_mode
& 1) &&
5447 !acpi_ec_write(TP_EC_BACKLIGHT
,
5448 (i
+ inc
) | command_bits
)) {
5455 mutex_unlock(&brightness_mutex
);
5459 /* sysfs backlight class ----------------------------------------------- */
5461 static int brightness_update_status(struct backlight_device
*bd
)
5463 /* it is the backlight class's job (caller) to handle
5464 * EINTR and other errors properly */
5465 return brightness_set(
5466 (bd
->props
.fb_blank
== FB_BLANK_UNBLANK
&&
5467 bd
->props
.power
== FB_BLANK_UNBLANK
) ?
5468 bd
->props
.brightness
: 0);
5471 static int brightness_get(struct backlight_device
*bd
)
5475 res
= brightness_get_raw(&status
);
5477 return 0; /* FIXME: teach backlight about error handling */
5479 return status
& TP_EC_BACKLIGHT_LVLMSK
;
5482 static struct backlight_ops ibm_backlight_data
= {
5483 .get_brightness
= brightness_get
,
5484 .update_status
= brightness_update_status
,
5487 /* --------------------------------------------------------------------- */
5489 static int __init
brightness_init(struct ibm_init_struct
*iibm
)
5493 vdbg_printk(TPACPI_DBG_INIT
, "initializing brightness subdriver\n");
5495 mutex_init(&brightness_mutex
);
5498 * We always attempt to detect acpi support, so as to switch
5499 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
5500 * going to publish a backlight interface
5502 b
= tpacpi_check_std_acpi_brightness_support();
5504 if (thinkpad_id
.vendor
== PCI_VENDOR_ID_LENOVO
) {
5505 printk(TPACPI_NOTICE
5506 "Lenovo BIOS switched to ACPI backlight "
5509 if (brightness_enable
> 1) {
5510 printk(TPACPI_NOTICE
5511 "standard ACPI backlight interface "
5512 "available, not loading native one...\n");
5517 if (!brightness_enable
) {
5518 dbg_printk(TPACPI_DBG_INIT
,
5519 "brightness support disabled by "
5520 "module parameter\n");
5526 "Unsupported brightness interface, "
5527 "please contact %s\n", TPACPI_MAIL
);
5531 tp_features
.bright_16levels
= 1;
5533 if (!brightness_mode
) {
5534 if (thinkpad_id
.vendor
== PCI_VENDOR_ID_LENOVO
)
5535 brightness_mode
= 2;
5537 brightness_mode
= 3;
5539 dbg_printk(TPACPI_DBG_INIT
, "selected brightness_mode=%d\n",
5543 if (brightness_mode
> 3)
5546 if (brightness_get_raw(&b
) < 0)
5549 if (tp_features
.bright_16levels
)
5551 "detected a 16-level brightness capable ThinkPad\n");
5553 ibm_backlight_device
= backlight_device_register(
5554 TPACPI_BACKLIGHT_DEV_NAME
, NULL
, NULL
,
5555 &ibm_backlight_data
);
5556 if (IS_ERR(ibm_backlight_device
)) {
5557 printk(TPACPI_ERR
"Could not register backlight device\n");
5558 return PTR_ERR(ibm_backlight_device
);
5560 vdbg_printk(TPACPI_DBG_INIT
, "brightness is supported\n");
5562 ibm_backlight_device
->props
.max_brightness
=
5563 (tp_features
.bright_16levels
)? 15 : 7;
5564 ibm_backlight_device
->props
.brightness
= b
& TP_EC_BACKLIGHT_LVLMSK
;
5565 backlight_update_status(ibm_backlight_device
);
5570 static void brightness_exit(void)
5572 if (ibm_backlight_device
) {
5573 vdbg_printk(TPACPI_DBG_EXIT
,
5574 "calling backlight_device_unregister()\n");
5575 backlight_device_unregister(ibm_backlight_device
);
5579 static int brightness_read(char *p
)
5584 level
= brightness_get(NULL
);
5586 len
+= sprintf(p
+ len
, "level:\t\tunreadable\n");
5588 len
+= sprintf(p
+ len
, "level:\t\t%d\n", level
);
5589 len
+= sprintf(p
+ len
, "commands:\tup, down\n");
5590 len
+= sprintf(p
+ len
, "commands:\tlevel <level>"
5591 " (<level> is 0-%d)\n",
5592 (tp_features
.bright_16levels
) ? 15 : 7);
5598 static int brightness_write(char *buf
)
5603 int max_level
= (tp_features
.bright_16levels
) ? 15 : 7;
5605 level
= brightness_get(NULL
);
5609 while ((cmd
= next_cmd(&buf
))) {
5610 if (strlencmp(cmd
, "up") == 0) {
5611 if (level
< max_level
)
5613 } else if (strlencmp(cmd
, "down") == 0) {
5616 } else if (sscanf(cmd
, "level %d", &level
) == 1 &&
5617 level
>= 0 && level
<= max_level
) {
5624 * Now we know what the final level should be, so we try to set it.
5625 * Doing it this way makes the syscall restartable in case of EINTR
5627 rc
= brightness_set(level
);
5628 return (rc
== -EINTR
)? ERESTARTSYS
: rc
;
5631 static struct ibm_struct brightness_driver_data
= {
5632 .name
= "brightness",
5633 .read
= brightness_read
,
5634 .write
= brightness_write
,
5635 .exit
= brightness_exit
,
5638 /*************************************************************************
5642 static int volume_offset
= 0x30;
5644 static int volume_read(char *p
)
5649 if (!acpi_ec_read(volume_offset
, &level
)) {
5650 len
+= sprintf(p
+ len
, "level:\t\tunreadable\n");
5652 len
+= sprintf(p
+ len
, "level:\t\t%d\n", level
& 0xf);
5653 len
+= sprintf(p
+ len
, "mute:\t\t%s\n", onoff(level
, 6));
5654 len
+= sprintf(p
+ len
, "commands:\tup, down, mute\n");
5655 len
+= sprintf(p
+ len
, "commands:\tlevel <level>"
5656 " (<level> is 0-15)\n");
5662 static int volume_write(char *buf
)
5664 int cmos_cmd
, inc
, i
;
5666 int new_level
, new_mute
;
5669 while ((cmd
= next_cmd(&buf
))) {
5670 if (!acpi_ec_read(volume_offset
, &level
))
5672 new_mute
= mute
= level
& 0x40;
5673 new_level
= level
= level
& 0xf;
5675 if (strlencmp(cmd
, "up") == 0) {
5679 new_level
= level
== 15 ? 15 : level
+ 1;
5680 } else if (strlencmp(cmd
, "down") == 0) {
5684 new_level
= level
== 0 ? 0 : level
- 1;
5685 } else if (sscanf(cmd
, "level %d", &new_level
) == 1 &&
5686 new_level
>= 0 && new_level
<= 15) {
5688 } else if (strlencmp(cmd
, "mute") == 0) {
5693 if (new_level
!= level
) {
5694 /* mute doesn't change */
5696 cmos_cmd
= (new_level
> level
) ?
5697 TP_CMOS_VOLUME_UP
: TP_CMOS_VOLUME_DOWN
;
5698 inc
= new_level
> level
? 1 : -1;
5700 if (mute
&& (issue_thinkpad_cmos_command(cmos_cmd
) ||
5701 !acpi_ec_write(volume_offset
, level
)))
5704 for (i
= level
; i
!= new_level
; i
+= inc
)
5705 if (issue_thinkpad_cmos_command(cmos_cmd
) ||
5706 !acpi_ec_write(volume_offset
, i
+ inc
))
5710 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE
) ||
5711 !acpi_ec_write(volume_offset
, new_level
+ mute
))) {
5716 if (new_mute
!= mute
) {
5717 /* level doesn't change */
5719 cmos_cmd
= (new_mute
) ?
5720 TP_CMOS_VOLUME_MUTE
: TP_CMOS_VOLUME_UP
;
5722 if (issue_thinkpad_cmos_command(cmos_cmd
) ||
5723 !acpi_ec_write(volume_offset
, level
+ new_mute
))
5731 static struct ibm_struct volume_driver_data
= {
5733 .read
= volume_read
,
5734 .write
= volume_write
,
5737 /*************************************************************************
5744 * TPACPI_FAN_RD_ACPI_GFAN:
5745 * ACPI GFAN method: returns fan level
5747 * see TPACPI_FAN_WR_ACPI_SFAN
5748 * EC 0x2f (HFSP) not available if GFAN exists
5750 * TPACPI_FAN_WR_ACPI_SFAN:
5751 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
5753 * EC 0x2f (HFSP) might be available *for reading*, but do not use
5756 * TPACPI_FAN_WR_TPEC:
5757 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
5758 * Supported on almost all ThinkPads
5760 * Fan speed changes of any sort (including those caused by the
5761 * disengaged mode) are usually done slowly by the firmware as the
5762 * maximum ammount of fan duty cycle change per second seems to be
5765 * Reading is not available if GFAN exists.
5766 * Writing is not available if SFAN exists.
5769 * 7 automatic mode engaged;
5770 * (default operation mode of the ThinkPad)
5771 * fan level is ignored in this mode.
5772 * 6 full speed mode (takes precedence over bit 7);
5773 * not available on all thinkpads. May disable
5774 * the tachometer while the fan controller ramps up
5775 * the speed (which can take up to a few *minutes*).
5776 * Speeds up fan to 100% duty-cycle, which is far above
5777 * the standard RPM levels. It is not impossible that
5778 * it could cause hardware damage.
5779 * 5-3 unused in some models. Extra bits for fan level
5780 * in others, but still useless as all values above
5781 * 7 map to the same speed as level 7 in these models.
5782 * 2-0 fan level (0..7 usually)
5784 * 0x07 = max (set when temperatures critical)
5785 * Some ThinkPads may have other levels, see
5786 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
5788 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
5789 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
5790 * does so, its initial value is meaningless (0x07).
5792 * For firmware bugs, refer to:
5793 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5797 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
5798 * Main fan tachometer reading (in RPM)
5800 * This register is present on all ThinkPads with a new-style EC, and
5801 * it is known not to be present on the A21m/e, and T22, as there is
5802 * something else in offset 0x84 according to the ACPI DSDT. Other
5803 * ThinkPads from this same time period (and earlier) probably lack the
5804 * tachometer as well.
5806 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
5807 * was never fixed by IBM to report the EC firmware version string
5808 * probably support the tachometer (like the early X models), so
5809 * detecting it is quite hard. We need more data to know for sure.
5811 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
5814 * FIRMWARE BUG: may go stale while the EC is switching to full speed
5817 * For firmware bugs, refer to:
5818 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5820 * TPACPI_FAN_WR_ACPI_FANS:
5821 * ThinkPad X31, X40, X41. Not available in the X60.
5823 * FANS ACPI handle: takes three arguments: low speed, medium speed,
5824 * high speed. ACPI DSDT seems to map these three speeds to levels
5825 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
5826 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
5828 * The speeds are stored on handles
5829 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
5831 * There are three default speed sets, acessible as handles:
5832 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
5834 * ACPI DSDT switches which set is in use depending on various
5837 * TPACPI_FAN_WR_TPEC is also available and should be used to
5838 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
5839 * but the ACPI tables just mention level 7.
5842 enum { /* Fan control constants */
5843 fan_status_offset
= 0x2f, /* EC register 0x2f */
5844 fan_rpm_offset
= 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
5845 * 0x84 must be read before 0x85 */
5847 TP_EC_FAN_FULLSPEED
= 0x40, /* EC fan mode: full speed */
5848 TP_EC_FAN_AUTO
= 0x80, /* EC fan mode: auto fan control */
5850 TPACPI_FAN_LAST_LEVEL
= 0x100, /* Use cached last-seen fan level */
5853 enum fan_status_access_mode
{
5854 TPACPI_FAN_NONE
= 0, /* No fan status or control */
5855 TPACPI_FAN_RD_ACPI_GFAN
, /* Use ACPI GFAN */
5856 TPACPI_FAN_RD_TPEC
, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
5859 enum fan_control_access_mode
{
5860 TPACPI_FAN_WR_NONE
= 0, /* No fan control */
5861 TPACPI_FAN_WR_ACPI_SFAN
, /* Use ACPI SFAN */
5862 TPACPI_FAN_WR_TPEC
, /* Use ACPI EC reg 0x2f */
5863 TPACPI_FAN_WR_ACPI_FANS
, /* Use ACPI FANS and EC reg 0x2f */
5866 enum fan_control_commands
{
5867 TPACPI_FAN_CMD_SPEED
= 0x0001, /* speed command */
5868 TPACPI_FAN_CMD_LEVEL
= 0x0002, /* level command */
5869 TPACPI_FAN_CMD_ENABLE
= 0x0004, /* enable/disable cmd,
5870 * and also watchdog cmd */
5873 static int fan_control_allowed
;
5875 static enum fan_status_access_mode fan_status_access_mode
;
5876 static enum fan_control_access_mode fan_control_access_mode
;
5877 static enum fan_control_commands fan_control_commands
;
5879 static u8 fan_control_initial_status
;
5880 static u8 fan_control_desired_level
;
5881 static u8 fan_control_resume_level
;
5882 static int fan_watchdog_maxinterval
;
5884 static struct mutex fan_mutex
;
5886 static void fan_watchdog_fire(struct work_struct
*ignored
);
5887 static DECLARE_DELAYED_WORK(fan_watchdog_task
, fan_watchdog_fire
);
5889 TPACPI_HANDLE(fans
, ec
, "FANS"); /* X31, X40, X41 */
5890 TPACPI_HANDLE(gfan
, ec
, "GFAN", /* 570 */
5891 "\\FSPD", /* 600e/x, 770e, 770x */
5893 TPACPI_HANDLE(sfan
, ec
, "SFAN", /* 570 */
5894 "JFNS", /* 770x-JL */
5898 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
5899 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
5900 * be in auto mode (0x80).
5902 * This is corrected by any write to HFSP either by the driver, or
5905 * We assume 0x07 really means auto mode while this quirk is active,
5906 * as this is far more likely than the ThinkPad being in level 7,
5907 * which is only used by the firmware during thermal emergencies.
5910 static void fan_quirk1_detect(void)
5912 /* In some ThinkPads, neither the EC nor the ACPI
5913 * DSDT initialize the HFSP register, and it ends up
5914 * being initially set to 0x07 when it *could* be
5915 * either 0x07 or 0x80.
5917 * Enable for TP-1Y (T43), TP-78 (R51e),
5918 * TP-76 (R52), TP-70 (T43, R52), which are known
5920 if (fan_control_initial_status
== 0x07) {
5921 switch (thinkpad_id
.ec_model
) {
5922 case 0x5931: /* TP-1Y */
5923 case 0x3837: /* TP-78 */
5924 case 0x3637: /* TP-76 */
5925 case 0x3037: /* TP-70 */
5926 printk(TPACPI_NOTICE
5927 "fan_init: initial fan status is unknown, "
5928 "assuming it is in auto mode\n");
5929 tp_features
.fan_ctrl_status_undef
= 1;
5935 static void fan_quirk1_handle(u8
*fan_status
)
5937 if (unlikely(tp_features
.fan_ctrl_status_undef
)) {
5938 if (*fan_status
!= fan_control_initial_status
) {
5939 /* something changed the HFSP regisnter since
5940 * driver init time, so it is not undefined
5942 tp_features
.fan_ctrl_status_undef
= 0;
5944 /* Return most likely status. In fact, it
5945 * might be the only possible status */
5946 *fan_status
= TP_EC_FAN_AUTO
;
5952 * Call with fan_mutex held
5954 static void fan_update_desired_level(u8 status
)
5957 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
5959 fan_control_desired_level
= 7;
5961 fan_control_desired_level
= status
;
5965 static int fan_get_status(u8
*status
)
5970 * Add TPACPI_FAN_RD_ACPI_FANS ? */
5972 switch (fan_status_access_mode
) {
5973 case TPACPI_FAN_RD_ACPI_GFAN
:
5974 /* 570, 600e/x, 770e, 770x */
5976 if (unlikely(!acpi_evalf(gfan_handle
, &s
, NULL
, "d")))
5984 case TPACPI_FAN_RD_TPEC
:
5985 /* all except 570, 600e/x, 770e, 770x */
5986 if (unlikely(!acpi_ec_read(fan_status_offset
, &s
)))
5989 if (likely(status
)) {
5991 fan_quirk1_handle(status
);
6003 static int fan_get_status_safe(u8
*status
)
6008 if (mutex_lock_killable(&fan_mutex
))
6009 return -ERESTARTSYS
;
6010 rc
= fan_get_status(&s
);
6012 fan_update_desired_level(s
);
6013 mutex_unlock(&fan_mutex
);
6021 static int fan_get_speed(unsigned int *speed
)
6025 switch (fan_status_access_mode
) {
6026 case TPACPI_FAN_RD_TPEC
:
6027 /* all except 570, 600e/x, 770e, 770x */
6028 if (unlikely(!acpi_ec_read(fan_rpm_offset
, &lo
) ||
6029 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
)))
6033 *speed
= (hi
<< 8) | lo
;
6044 static int fan_set_level(int level
)
6046 if (!fan_control_allowed
)
6049 switch (fan_control_access_mode
) {
6050 case TPACPI_FAN_WR_ACPI_SFAN
:
6051 if (level
>= 0 && level
<= 7) {
6052 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", level
))
6058 case TPACPI_FAN_WR_ACPI_FANS
:
6059 case TPACPI_FAN_WR_TPEC
:
6060 if (!(level
& TP_EC_FAN_AUTO
) &&
6061 !(level
& TP_EC_FAN_FULLSPEED
) &&
6062 ((level
< 0) || (level
> 7)))
6065 /* safety net should the EC not support AUTO
6066 * or FULLSPEED mode bits and just ignore them */
6067 if (level
& TP_EC_FAN_FULLSPEED
)
6068 level
|= 7; /* safety min speed 7 */
6069 else if (level
& TP_EC_FAN_AUTO
)
6070 level
|= 4; /* safety min speed 4 */
6072 if (!acpi_ec_write(fan_status_offset
, level
))
6075 tp_features
.fan_ctrl_status_undef
= 0;
6084 static int fan_set_level_safe(int level
)
6088 if (!fan_control_allowed
)
6091 if (mutex_lock_killable(&fan_mutex
))
6092 return -ERESTARTSYS
;
6094 if (level
== TPACPI_FAN_LAST_LEVEL
)
6095 level
= fan_control_desired_level
;
6097 rc
= fan_set_level(level
);
6099 fan_update_desired_level(level
);
6101 mutex_unlock(&fan_mutex
);
6105 static int fan_set_enable(void)
6110 if (!fan_control_allowed
)
6113 if (mutex_lock_killable(&fan_mutex
))
6114 return -ERESTARTSYS
;
6116 switch (fan_control_access_mode
) {
6117 case TPACPI_FAN_WR_ACPI_FANS
:
6118 case TPACPI_FAN_WR_TPEC
:
6119 rc
= fan_get_status(&s
);
6123 /* Don't go out of emergency fan mode */
6126 s
|= TP_EC_FAN_AUTO
| 4; /* min fan speed 4 */
6129 if (!acpi_ec_write(fan_status_offset
, s
))
6132 tp_features
.fan_ctrl_status_undef
= 0;
6137 case TPACPI_FAN_WR_ACPI_SFAN
:
6138 rc
= fan_get_status(&s
);
6144 /* Set fan to at least level 4 */
6147 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", s
))
6157 mutex_unlock(&fan_mutex
);
6161 static int fan_set_disable(void)
6165 if (!fan_control_allowed
)
6168 if (mutex_lock_killable(&fan_mutex
))
6169 return -ERESTARTSYS
;
6172 switch (fan_control_access_mode
) {
6173 case TPACPI_FAN_WR_ACPI_FANS
:
6174 case TPACPI_FAN_WR_TPEC
:
6175 if (!acpi_ec_write(fan_status_offset
, 0x00))
6178 fan_control_desired_level
= 0;
6179 tp_features
.fan_ctrl_status_undef
= 0;
6183 case TPACPI_FAN_WR_ACPI_SFAN
:
6184 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", 0x00))
6187 fan_control_desired_level
= 0;
6195 mutex_unlock(&fan_mutex
);
6199 static int fan_set_speed(int speed
)
6203 if (!fan_control_allowed
)
6206 if (mutex_lock_killable(&fan_mutex
))
6207 return -ERESTARTSYS
;
6210 switch (fan_control_access_mode
) {
6211 case TPACPI_FAN_WR_ACPI_FANS
:
6212 if (speed
>= 0 && speed
<= 65535) {
6213 if (!acpi_evalf(fans_handle
, NULL
, NULL
, "vddd",
6214 speed
, speed
, speed
))
6224 mutex_unlock(&fan_mutex
);
6228 static void fan_watchdog_reset(void)
6230 static int fan_watchdog_active
;
6232 if (fan_control_access_mode
== TPACPI_FAN_WR_NONE
)
6235 if (fan_watchdog_active
)
6236 cancel_delayed_work(&fan_watchdog_task
);
6238 if (fan_watchdog_maxinterval
> 0 &&
6239 tpacpi_lifecycle
!= TPACPI_LIFE_EXITING
) {
6240 fan_watchdog_active
= 1;
6241 if (!queue_delayed_work(tpacpi_wq
, &fan_watchdog_task
,
6242 msecs_to_jiffies(fan_watchdog_maxinterval
6245 "failed to queue the fan watchdog, "
6246 "watchdog will not trigger\n");
6249 fan_watchdog_active
= 0;
6252 static void fan_watchdog_fire(struct work_struct
*ignored
)
6256 if (tpacpi_lifecycle
!= TPACPI_LIFE_RUNNING
)
6259 printk(TPACPI_NOTICE
"fan watchdog: enabling fan\n");
6260 rc
= fan_set_enable();
6262 printk(TPACPI_ERR
"fan watchdog: error %d while enabling fan, "
6263 "will try again later...\n", -rc
);
6264 /* reschedule for later */
6265 fan_watchdog_reset();
6270 * SYSFS fan layout: hwmon compatible (device)
6273 * 0: "disengaged" mode
6275 * 2: native EC "auto" mode (recommended, hardware default)
6277 * pwm*: set speed in manual mode, ignored otherwise.
6278 * 0 is level 0; 255 is level 7. Intermediate points done with linear
6281 * fan*_input: tachometer reading, RPM
6284 * SYSFS fan layout: extensions
6286 * fan_watchdog (driver):
6287 * fan watchdog interval in seconds, 0 disables (default), max 120
6290 /* sysfs fan pwm1_enable ----------------------------------------------- */
6291 static ssize_t
fan_pwm1_enable_show(struct device
*dev
,
6292 struct device_attribute
*attr
,
6298 res
= fan_get_status_safe(&status
);
6302 if (status
& TP_EC_FAN_FULLSPEED
) {
6304 } else if (status
& TP_EC_FAN_AUTO
) {
6309 return snprintf(buf
, PAGE_SIZE
, "%d\n", mode
);
6312 static ssize_t
fan_pwm1_enable_store(struct device
*dev
,
6313 struct device_attribute
*attr
,
6314 const char *buf
, size_t count
)
6319 if (parse_strtoul(buf
, 2, &t
))
6324 level
= TP_EC_FAN_FULLSPEED
;
6327 level
= TPACPI_FAN_LAST_LEVEL
;
6330 level
= TP_EC_FAN_AUTO
;
6333 /* reserved for software-controlled auto mode */
6339 res
= fan_set_level_safe(level
);
6345 fan_watchdog_reset();
6350 static struct device_attribute dev_attr_fan_pwm1_enable
=
6351 __ATTR(pwm1_enable
, S_IWUSR
| S_IRUGO
,
6352 fan_pwm1_enable_show
, fan_pwm1_enable_store
);
6354 /* sysfs fan pwm1 ------------------------------------------------------ */
6355 static ssize_t
fan_pwm1_show(struct device
*dev
,
6356 struct device_attribute
*attr
,
6362 res
= fan_get_status_safe(&status
);
6367 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) != 0)
6368 status
= fan_control_desired_level
;
6373 return snprintf(buf
, PAGE_SIZE
, "%u\n", (status
* 255) / 7);
6376 static ssize_t
fan_pwm1_store(struct device
*dev
,
6377 struct device_attribute
*attr
,
6378 const char *buf
, size_t count
)
6382 u8 status
, newlevel
;
6384 if (parse_strtoul(buf
, 255, &s
))
6387 /* scale down from 0-255 to 0-7 */
6388 newlevel
= (s
>> 5) & 0x07;
6390 if (mutex_lock_killable(&fan_mutex
))
6391 return -ERESTARTSYS
;
6393 rc
= fan_get_status(&status
);
6394 if (!rc
&& (status
&
6395 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
6396 rc
= fan_set_level(newlevel
);
6400 fan_update_desired_level(newlevel
);
6401 fan_watchdog_reset();
6405 mutex_unlock(&fan_mutex
);
6406 return (rc
)? rc
: count
;
6409 static struct device_attribute dev_attr_fan_pwm1
=
6410 __ATTR(pwm1
, S_IWUSR
| S_IRUGO
,
6411 fan_pwm1_show
, fan_pwm1_store
);
6413 /* sysfs fan fan1_input ------------------------------------------------ */
6414 static ssize_t
fan_fan1_input_show(struct device
*dev
,
6415 struct device_attribute
*attr
,
6421 res
= fan_get_speed(&speed
);
6425 return snprintf(buf
, PAGE_SIZE
, "%u\n", speed
);
6428 static struct device_attribute dev_attr_fan_fan1_input
=
6429 __ATTR(fan1_input
, S_IRUGO
,
6430 fan_fan1_input_show
, NULL
);
6432 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
6433 static ssize_t
fan_fan_watchdog_show(struct device_driver
*drv
,
6436 return snprintf(buf
, PAGE_SIZE
, "%u\n", fan_watchdog_maxinterval
);
6439 static ssize_t
fan_fan_watchdog_store(struct device_driver
*drv
,
6440 const char *buf
, size_t count
)
6444 if (parse_strtoul(buf
, 120, &t
))
6447 if (!fan_control_allowed
)
6450 fan_watchdog_maxinterval
= t
;
6451 fan_watchdog_reset();
6456 static DRIVER_ATTR(fan_watchdog
, S_IWUSR
| S_IRUGO
,
6457 fan_fan_watchdog_show
, fan_fan_watchdog_store
);
6459 /* --------------------------------------------------------------------- */
6460 static struct attribute
*fan_attributes
[] = {
6461 &dev_attr_fan_pwm1_enable
.attr
, &dev_attr_fan_pwm1
.attr
,
6462 &dev_attr_fan_fan1_input
.attr
,
6466 static const struct attribute_group fan_attr_group
= {
6467 .attrs
= fan_attributes
,
6470 static int __init
fan_init(struct ibm_init_struct
*iibm
)
6474 vdbg_printk(TPACPI_DBG_INIT
, "initializing fan subdriver\n");
6476 mutex_init(&fan_mutex
);
6477 fan_status_access_mode
= TPACPI_FAN_NONE
;
6478 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
6479 fan_control_commands
= 0;
6480 fan_watchdog_maxinterval
= 0;
6481 tp_features
.fan_ctrl_status_undef
= 0;
6482 fan_control_desired_level
= 7;
6484 TPACPI_ACPIHANDLE_INIT(fans
);
6485 TPACPI_ACPIHANDLE_INIT(gfan
);
6486 TPACPI_ACPIHANDLE_INIT(sfan
);
6489 /* 570, 600e/x, 770e, 770x */
6490 fan_status_access_mode
= TPACPI_FAN_RD_ACPI_GFAN
;
6492 /* all other ThinkPads: note that even old-style
6493 * ThinkPad ECs supports the fan control register */
6494 if (likely(acpi_ec_read(fan_status_offset
,
6495 &fan_control_initial_status
))) {
6496 fan_status_access_mode
= TPACPI_FAN_RD_TPEC
;
6497 fan_quirk1_detect();
6500 "ThinkPad ACPI EC access misbehaving, "
6501 "fan status and control unavailable\n");
6508 fan_control_access_mode
= TPACPI_FAN_WR_ACPI_SFAN
;
6509 fan_control_commands
|=
6510 TPACPI_FAN_CMD_LEVEL
| TPACPI_FAN_CMD_ENABLE
;
6513 /* gfan without sfan means no fan control */
6514 /* all other models implement TP EC 0x2f control */
6518 fan_control_access_mode
=
6519 TPACPI_FAN_WR_ACPI_FANS
;
6520 fan_control_commands
|=
6521 TPACPI_FAN_CMD_SPEED
|
6522 TPACPI_FAN_CMD_LEVEL
|
6523 TPACPI_FAN_CMD_ENABLE
;
6525 fan_control_access_mode
= TPACPI_FAN_WR_TPEC
;
6526 fan_control_commands
|=
6527 TPACPI_FAN_CMD_LEVEL
|
6528 TPACPI_FAN_CMD_ENABLE
;
6533 vdbg_printk(TPACPI_DBG_INIT
, "fan is %s, modes %d, %d\n",
6534 str_supported(fan_status_access_mode
!= TPACPI_FAN_NONE
||
6535 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
),
6536 fan_status_access_mode
, fan_control_access_mode
);
6538 /* fan control master switch */
6539 if (!fan_control_allowed
) {
6540 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
6541 fan_control_commands
= 0;
6542 dbg_printk(TPACPI_DBG_INIT
,
6543 "fan control features disabled by parameter\n");
6546 /* update fan_control_desired_level */
6547 if (fan_status_access_mode
!= TPACPI_FAN_NONE
)
6548 fan_get_status_safe(NULL
);
6550 if (fan_status_access_mode
!= TPACPI_FAN_NONE
||
6551 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
) {
6552 rc
= sysfs_create_group(&tpacpi_sensors_pdev
->dev
.kobj
,
6557 rc
= driver_create_file(&tpacpi_hwmon_pdriver
.driver
,
6558 &driver_attr_fan_watchdog
);
6560 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
,
6569 static void fan_exit(void)
6571 vdbg_printk(TPACPI_DBG_EXIT
,
6572 "cancelling any pending fan watchdog tasks\n");
6574 /* FIXME: can we really do this unconditionally? */
6575 sysfs_remove_group(&tpacpi_sensors_pdev
->dev
.kobj
, &fan_attr_group
);
6576 driver_remove_file(&tpacpi_hwmon_pdriver
.driver
,
6577 &driver_attr_fan_watchdog
);
6579 cancel_delayed_work(&fan_watchdog_task
);
6580 flush_workqueue(tpacpi_wq
);
6583 static void fan_suspend(pm_message_t state
)
6587 if (!fan_control_allowed
)
6590 /* Store fan status in cache */
6591 fan_control_resume_level
= 0;
6592 rc
= fan_get_status_safe(&fan_control_resume_level
);
6594 printk(TPACPI_NOTICE
6595 "failed to read fan level for later "
6596 "restore during resume: %d\n", rc
);
6598 /* if it is undefined, don't attempt to restore it.
6600 if (tp_features
.fan_ctrl_status_undef
)
6601 fan_control_resume_level
= 0;
6604 static void fan_resume(void)
6606 u8 current_level
= 7;
6607 bool do_set
= false;
6610 /* DSDT *always* updates status on resume */
6611 tp_features
.fan_ctrl_status_undef
= 0;
6613 if (!fan_control_allowed
||
6614 !fan_control_resume_level
||
6615 (fan_get_status_safe(¤t_level
) < 0))
6618 switch (fan_control_access_mode
) {
6619 case TPACPI_FAN_WR_ACPI_SFAN
:
6620 /* never decrease fan level */
6621 do_set
= (fan_control_resume_level
> current_level
);
6623 case TPACPI_FAN_WR_ACPI_FANS
:
6624 case TPACPI_FAN_WR_TPEC
:
6625 /* never decrease fan level, scale is:
6626 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
6628 * We expect the firmware to set either 7 or AUTO, but we
6629 * handle FULLSPEED out of paranoia.
6631 * So, we can safely only restore FULLSPEED or 7, anything
6632 * else could slow the fan. Restoring AUTO is useless, at
6633 * best that's exactly what the DSDT already set (it is the
6636 * Always keep in mind that the DSDT *will* have set the
6637 * fans to what the vendor supposes is the best level. We
6638 * muck with it only to speed the fan up.
6640 if (fan_control_resume_level
!= 7 &&
6641 !(fan_control_resume_level
& TP_EC_FAN_FULLSPEED
))
6644 do_set
= !(current_level
& TP_EC_FAN_FULLSPEED
) &&
6645 (current_level
!= fan_control_resume_level
);
6651 printk(TPACPI_NOTICE
6652 "restoring fan level to 0x%02x\n",
6653 fan_control_resume_level
);
6654 rc
= fan_set_level_safe(fan_control_resume_level
);
6656 printk(TPACPI_NOTICE
6657 "failed to restore fan level: %d\n", rc
);
6661 static int fan_read(char *p
)
6666 unsigned int speed
= 0;
6668 switch (fan_status_access_mode
) {
6669 case TPACPI_FAN_RD_ACPI_GFAN
:
6670 /* 570, 600e/x, 770e, 770x */
6671 rc
= fan_get_status_safe(&status
);
6675 len
+= sprintf(p
+ len
, "status:\t\t%s\n"
6677 (status
!= 0) ? "enabled" : "disabled", status
);
6680 case TPACPI_FAN_RD_TPEC
:
6681 /* all except 570, 600e/x, 770e, 770x */
6682 rc
= fan_get_status_safe(&status
);
6686 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
6687 (status
!= 0) ? "enabled" : "disabled");
6689 rc
= fan_get_speed(&speed
);
6693 len
+= sprintf(p
+ len
, "speed:\t\t%d\n", speed
);
6695 if (status
& TP_EC_FAN_FULLSPEED
)
6696 /* Disengaged mode takes precedence */
6697 len
+= sprintf(p
+ len
, "level:\t\tdisengaged\n");
6698 else if (status
& TP_EC_FAN_AUTO
)
6699 len
+= sprintf(p
+ len
, "level:\t\tauto\n");
6701 len
+= sprintf(p
+ len
, "level:\t\t%d\n", status
);
6704 case TPACPI_FAN_NONE
:
6706 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
6709 if (fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) {
6710 len
+= sprintf(p
+ len
, "commands:\tlevel <level>");
6712 switch (fan_control_access_mode
) {
6713 case TPACPI_FAN_WR_ACPI_SFAN
:
6714 len
+= sprintf(p
+ len
, " (<level> is 0-7)\n");
6718 len
+= sprintf(p
+ len
, " (<level> is 0-7, "
6719 "auto, disengaged, full-speed)\n");
6724 if (fan_control_commands
& TPACPI_FAN_CMD_ENABLE
)
6725 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n"
6726 "commands:\twatchdog <timeout> (<timeout> "
6727 "is 0 (off), 1-120 (seconds))\n");
6729 if (fan_control_commands
& TPACPI_FAN_CMD_SPEED
)
6730 len
+= sprintf(p
+ len
, "commands:\tspeed <speed>"
6731 " (<speed> is 0-65535)\n");
6736 static int fan_write_cmd_level(const char *cmd
, int *rc
)
6740 if (strlencmp(cmd
, "level auto") == 0)
6741 level
= TP_EC_FAN_AUTO
;
6742 else if ((strlencmp(cmd
, "level disengaged") == 0) |
6743 (strlencmp(cmd
, "level full-speed") == 0))
6744 level
= TP_EC_FAN_FULLSPEED
;
6745 else if (sscanf(cmd
, "level %d", &level
) != 1)
6748 *rc
= fan_set_level_safe(level
);
6750 printk(TPACPI_ERR
"level command accepted for unsupported "
6751 "access mode %d", fan_control_access_mode
);
6756 static int fan_write_cmd_enable(const char *cmd
, int *rc
)
6758 if (strlencmp(cmd
, "enable") != 0)
6761 *rc
= fan_set_enable();
6763 printk(TPACPI_ERR
"enable command accepted for unsupported "
6764 "access mode %d", fan_control_access_mode
);
6769 static int fan_write_cmd_disable(const char *cmd
, int *rc
)
6771 if (strlencmp(cmd
, "disable") != 0)
6774 *rc
= fan_set_disable();
6776 printk(TPACPI_ERR
"disable command accepted for unsupported "
6777 "access mode %d", fan_control_access_mode
);
6782 static int fan_write_cmd_speed(const char *cmd
, int *rc
)
6787 * Support speed <low> <medium> <high> ? */
6789 if (sscanf(cmd
, "speed %d", &speed
) != 1)
6792 *rc
= fan_set_speed(speed
);
6794 printk(TPACPI_ERR
"speed command accepted for unsupported "
6795 "access mode %d", fan_control_access_mode
);
6800 static int fan_write_cmd_watchdog(const char *cmd
, int *rc
)
6804 if (sscanf(cmd
, "watchdog %d", &interval
) != 1)
6807 if (interval
< 0 || interval
> 120)
6810 fan_watchdog_maxinterval
= interval
;
6815 static int fan_write(char *buf
)
6820 while (!rc
&& (cmd
= next_cmd(&buf
))) {
6821 if (!((fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) &&
6822 fan_write_cmd_level(cmd
, &rc
)) &&
6823 !((fan_control_commands
& TPACPI_FAN_CMD_ENABLE
) &&
6824 (fan_write_cmd_enable(cmd
, &rc
) ||
6825 fan_write_cmd_disable(cmd
, &rc
) ||
6826 fan_write_cmd_watchdog(cmd
, &rc
))) &&
6827 !((fan_control_commands
& TPACPI_FAN_CMD_SPEED
) &&
6828 fan_write_cmd_speed(cmd
, &rc
))
6832 fan_watchdog_reset();
6838 static struct ibm_struct fan_driver_data
= {
6843 .suspend
= fan_suspend
,
6844 .resume
= fan_resume
,
6847 /****************************************************************************
6848 ****************************************************************************
6852 ****************************************************************************
6853 ****************************************************************************/
6855 /* sysfs name ---------------------------------------------------------- */
6856 static ssize_t
thinkpad_acpi_pdev_name_show(struct device
*dev
,
6857 struct device_attribute
*attr
,
6860 return snprintf(buf
, PAGE_SIZE
, "%s\n", TPACPI_NAME
);
6863 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name
=
6864 __ATTR(name
, S_IRUGO
, thinkpad_acpi_pdev_name_show
, NULL
);
6866 /* --------------------------------------------------------------------- */
6869 static struct proc_dir_entry
*proc_dir
;
6872 * Module and infrastructure proble, init and exit handling
6875 static int force_load
;
6877 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
6878 static const char * __init
str_supported(int is_supported
)
6880 static char text_unsupported
[] __initdata
= "not supported";
6882 return (is_supported
)? &text_unsupported
[4] : &text_unsupported
[0];
6884 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
6886 static void ibm_exit(struct ibm_struct
*ibm
)
6888 dbg_printk(TPACPI_DBG_EXIT
, "removing %s\n", ibm
->name
);
6890 list_del_init(&ibm
->all_drivers
);
6892 if (ibm
->flags
.acpi_notify_installed
) {
6893 dbg_printk(TPACPI_DBG_EXIT
,
6894 "%s: acpi_remove_notify_handler\n", ibm
->name
);
6896 acpi_remove_notify_handler(*ibm
->acpi
->handle
,
6898 dispatch_acpi_notify
);
6899 ibm
->flags
.acpi_notify_installed
= 0;
6900 ibm
->flags
.acpi_notify_installed
= 0;
6903 if (ibm
->flags
.proc_created
) {
6904 dbg_printk(TPACPI_DBG_EXIT
,
6905 "%s: remove_proc_entry\n", ibm
->name
);
6906 remove_proc_entry(ibm
->name
, proc_dir
);
6907 ibm
->flags
.proc_created
= 0;
6910 if (ibm
->flags
.acpi_driver_registered
) {
6911 dbg_printk(TPACPI_DBG_EXIT
,
6912 "%s: acpi_bus_unregister_driver\n", ibm
->name
);
6914 acpi_bus_unregister_driver(ibm
->acpi
->driver
);
6915 kfree(ibm
->acpi
->driver
);
6916 ibm
->acpi
->driver
= NULL
;
6917 ibm
->flags
.acpi_driver_registered
= 0;
6920 if (ibm
->flags
.init_called
&& ibm
->exit
) {
6922 ibm
->flags
.init_called
= 0;
6925 dbg_printk(TPACPI_DBG_INIT
, "finished removing %s\n", ibm
->name
);
6928 static int __init
ibm_init(struct ibm_init_struct
*iibm
)
6931 struct ibm_struct
*ibm
= iibm
->data
;
6932 struct proc_dir_entry
*entry
;
6934 BUG_ON(ibm
== NULL
);
6936 INIT_LIST_HEAD(&ibm
->all_drivers
);
6938 if (ibm
->flags
.experimental
&& !experimental
)
6941 dbg_printk(TPACPI_DBG_INIT
,
6942 "probing for %s\n", ibm
->name
);
6945 ret
= iibm
->init(iibm
);
6947 return 0; /* probe failed */
6951 ibm
->flags
.init_called
= 1;
6955 if (ibm
->acpi
->hid
) {
6956 ret
= register_tpacpi_subdriver(ibm
);
6961 if (ibm
->acpi
->notify
) {
6962 ret
= setup_acpi_notify(ibm
);
6963 if (ret
== -ENODEV
) {
6964 printk(TPACPI_NOTICE
"disabling subdriver %s\n",
6974 dbg_printk(TPACPI_DBG_INIT
,
6975 "%s installed\n", ibm
->name
);
6978 entry
= create_proc_entry(ibm
->name
,
6979 S_IFREG
| S_IRUGO
| S_IWUSR
,
6982 printk(TPACPI_ERR
"unable to create proc entry %s\n",
6987 entry
->owner
= THIS_MODULE
;
6989 entry
->read_proc
= &dispatch_procfs_read
;
6991 entry
->write_proc
= &dispatch_procfs_write
;
6992 ibm
->flags
.proc_created
= 1;
6995 list_add_tail(&ibm
->all_drivers
, &tpacpi_all_drivers
);
7000 dbg_printk(TPACPI_DBG_INIT
,
7001 "%s: at error exit path with result %d\n",
7005 return (ret
< 0)? ret
: 0;
7010 /* returns 0 - probe ok, or < 0 - probe error.
7011 * Probe ok doesn't mean thinkpad found.
7012 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
7013 static int __must_check __init
get_thinkpad_model_data(
7014 struct thinkpad_id_data
*tp
)
7016 const struct dmi_device
*dev
= NULL
;
7017 char ec_fw_string
[18];
7023 memset(tp
, 0, sizeof(*tp
));
7025 if (dmi_name_in_vendors("IBM"))
7026 tp
->vendor
= PCI_VENDOR_ID_IBM
;
7027 else if (dmi_name_in_vendors("LENOVO"))
7028 tp
->vendor
= PCI_VENDOR_ID_LENOVO
;
7032 s
= dmi_get_system_info(DMI_BIOS_VERSION
);
7033 tp
->bios_version_str
= kstrdup(s
, GFP_KERNEL
);
7034 if (s
&& !tp
->bios_version_str
)
7036 if (!tp
->bios_version_str
)
7038 tp
->bios_model
= tp
->bios_version_str
[0]
7039 | (tp
->bios_version_str
[1] << 8);
7042 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
7043 * X32 or newer, all Z series; Some models must have an
7044 * up-to-date BIOS or they will not be detected.
7046 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7048 while ((dev
= dmi_find_device(DMI_DEV_TYPE_OEM_STRING
, NULL
, dev
))) {
7049 if (sscanf(dev
->name
,
7050 "IBM ThinkPad Embedded Controller -[%17c",
7051 ec_fw_string
) == 1) {
7052 ec_fw_string
[sizeof(ec_fw_string
) - 1] = 0;
7053 ec_fw_string
[strcspn(ec_fw_string
, " ]")] = 0;
7055 tp
->ec_version_str
= kstrdup(ec_fw_string
, GFP_KERNEL
);
7056 if (!tp
->ec_version_str
)
7058 tp
->ec_model
= ec_fw_string
[0]
7059 | (ec_fw_string
[1] << 8);
7064 s
= dmi_get_system_info(DMI_PRODUCT_VERSION
);
7065 if (s
&& !strnicmp(s
, "ThinkPad", 8)) {
7066 tp
->model_str
= kstrdup(s
, GFP_KERNEL
);
7071 s
= dmi_get_system_info(DMI_PRODUCT_NAME
);
7072 tp
->nummodel_str
= kstrdup(s
, GFP_KERNEL
);
7073 if (s
&& !tp
->nummodel_str
)
7079 static int __init
probe_for_thinkpad(void)
7087 * Non-ancient models have better DMI tagging, but very old models
7090 is_thinkpad
= (thinkpad_id
.model_str
!= NULL
);
7092 /* ec is required because many other handles are relative to it */
7093 TPACPI_ACPIHANDLE_INIT(ec
);
7097 "Not yet supported ThinkPad detected!\n");
7102 * Risks a regression on very old machines, but reduces potential
7103 * false positives a damn great deal
7106 is_thinkpad
= (thinkpad_id
.vendor
== PCI_VENDOR_ID_IBM
);
7108 if (!is_thinkpad
&& !force_load
)
7115 /* Module init, exit, parameters */
7117 static struct ibm_init_struct ibms_init
[] __initdata
= {
7119 .init
= thinkpad_acpi_driver_init
,
7120 .data
= &thinkpad_acpi_driver_data
,
7123 .init
= hotkey_init
,
7124 .data
= &hotkey_driver_data
,
7127 .init
= bluetooth_init
,
7128 .data
= &bluetooth_driver_data
,
7132 .data
= &wan_driver_data
,
7136 .data
= &uwb_driver_data
,
7138 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
7141 .data
= &video_driver_data
,
7146 .data
= &light_driver_data
,
7148 #ifdef CONFIG_THINKPAD_ACPI_DOCK
7151 .data
= &dock_driver_data
[0],
7155 .data
= &dock_driver_data
[1],
7158 #ifdef CONFIG_THINKPAD_ACPI_BAY
7161 .data
= &bay_driver_data
,
7166 .data
= &cmos_driver_data
,
7170 .data
= &led_driver_data
,
7174 .data
= &beep_driver_data
,
7177 .init
= thermal_init
,
7178 .data
= &thermal_driver_data
,
7181 .data
= &ecdump_driver_data
,
7184 .init
= brightness_init
,
7185 .data
= &brightness_driver_data
,
7188 .data
= &volume_driver_data
,
7192 .data
= &fan_driver_data
,
7196 static int __init
set_ibm_param(const char *val
, struct kernel_param
*kp
)
7199 struct ibm_struct
*ibm
;
7201 if (!kp
|| !kp
->name
|| !val
)
7204 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
7205 ibm
= ibms_init
[i
].data
;
7206 WARN_ON(ibm
== NULL
);
7208 if (!ibm
|| !ibm
->name
)
7211 if (strcmp(ibm
->name
, kp
->name
) == 0 && ibm
->write
) {
7212 if (strlen(val
) > sizeof(ibms_init
[i
].param
) - 2)
7214 strcpy(ibms_init
[i
].param
, val
);
7215 strcat(ibms_init
[i
].param
, ",");
7223 module_param(experimental
, int, 0);
7224 MODULE_PARM_DESC(experimental
,
7225 "Enables experimental features when non-zero");
7227 module_param_named(debug
, dbg_level
, uint
, 0);
7228 MODULE_PARM_DESC(debug
, "Sets debug level bit-mask");
7230 module_param(force_load
, bool, 0);
7231 MODULE_PARM_DESC(force_load
,
7232 "Attempts to load the driver even on a "
7233 "mis-identified ThinkPad when true");
7235 module_param_named(fan_control
, fan_control_allowed
, bool, 0);
7236 MODULE_PARM_DESC(fan_control
,
7237 "Enables setting fan parameters features when true");
7239 module_param_named(brightness_mode
, brightness_mode
, int, 0);
7240 MODULE_PARM_DESC(brightness_mode
,
7241 "Selects brightness control strategy: "
7242 "0=auto, 1=EC, 2=CMOS, 3=both");
7244 module_param(brightness_enable
, uint
, 0);
7245 MODULE_PARM_DESC(brightness_enable
,
7246 "Enables backlight control when 1, disables when 0");
7248 module_param(hotkey_report_mode
, uint
, 0);
7249 MODULE_PARM_DESC(hotkey_report_mode
,
7250 "used for backwards compatibility with userspace, "
7251 "see documentation");
7253 #define TPACPI_PARAM(feature) \
7254 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
7255 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
7256 "at module load, see documentation")
7258 TPACPI_PARAM(hotkey
);
7259 TPACPI_PARAM(bluetooth
);
7260 TPACPI_PARAM(video
);
7261 TPACPI_PARAM(light
);
7262 #ifdef CONFIG_THINKPAD_ACPI_DOCK
7265 #ifdef CONFIG_THINKPAD_ACPI_BAY
7267 #endif /* CONFIG_THINKPAD_ACPI_BAY */
7271 TPACPI_PARAM(ecdump
);
7272 TPACPI_PARAM(brightness
);
7273 TPACPI_PARAM(volume
);
7276 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
7277 module_param(dbg_wlswemul
, uint
, 0);
7278 MODULE_PARM_DESC(dbg_wlswemul
, "Enables WLSW emulation");
7279 module_param_named(wlsw_state
, tpacpi_wlsw_emulstate
, bool, 0);
7280 MODULE_PARM_DESC(wlsw_state
,
7281 "Initial state of the emulated WLSW switch");
7283 module_param(dbg_bluetoothemul
, uint
, 0);
7284 MODULE_PARM_DESC(dbg_bluetoothemul
, "Enables bluetooth switch emulation");
7285 module_param_named(bluetooth_state
, tpacpi_bluetooth_emulstate
, bool, 0);
7286 MODULE_PARM_DESC(bluetooth_state
,
7287 "Initial state of the emulated bluetooth switch");
7289 module_param(dbg_wwanemul
, uint
, 0);
7290 MODULE_PARM_DESC(dbg_wwanemul
, "Enables WWAN switch emulation");
7291 module_param_named(wwan_state
, tpacpi_wwan_emulstate
, bool, 0);
7292 MODULE_PARM_DESC(wwan_state
,
7293 "Initial state of the emulated WWAN switch");
7295 module_param(dbg_uwbemul
, uint
, 0);
7296 MODULE_PARM_DESC(dbg_uwbemul
, "Enables UWB switch emulation");
7297 module_param_named(uwb_state
, tpacpi_uwb_emulstate
, bool, 0);
7298 MODULE_PARM_DESC(uwb_state
,
7299 "Initial state of the emulated UWB switch");
7302 static void thinkpad_acpi_module_exit(void)
7304 struct ibm_struct
*ibm
, *itmp
;
7306 tpacpi_lifecycle
= TPACPI_LIFE_EXITING
;
7308 list_for_each_entry_safe_reverse(ibm
, itmp
,
7309 &tpacpi_all_drivers
,
7314 dbg_printk(TPACPI_DBG_INIT
, "finished subdriver exit path...\n");
7316 if (tpacpi_inputdev
) {
7317 if (tp_features
.input_device_registered
)
7318 input_unregister_device(tpacpi_inputdev
);
7320 input_free_device(tpacpi_inputdev
);
7324 hwmon_device_unregister(tpacpi_hwmon
);
7326 if (tp_features
.sensors_pdev_attrs_registered
)
7327 device_remove_file(&tpacpi_sensors_pdev
->dev
,
7328 &dev_attr_thinkpad_acpi_pdev_name
);
7329 if (tpacpi_sensors_pdev
)
7330 platform_device_unregister(tpacpi_sensors_pdev
);
7332 platform_device_unregister(tpacpi_pdev
);
7334 if (tp_features
.sensors_pdrv_attrs_registered
)
7335 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver
.driver
);
7336 if (tp_features
.platform_drv_attrs_registered
)
7337 tpacpi_remove_driver_attributes(&tpacpi_pdriver
.driver
);
7339 if (tp_features
.sensors_pdrv_registered
)
7340 platform_driver_unregister(&tpacpi_hwmon_pdriver
);
7342 if (tp_features
.platform_drv_registered
)
7343 platform_driver_unregister(&tpacpi_pdriver
);
7346 remove_proc_entry(TPACPI_PROC_DIR
, acpi_root_dir
);
7349 destroy_workqueue(tpacpi_wq
);
7351 kfree(thinkpad_id
.bios_version_str
);
7352 kfree(thinkpad_id
.ec_version_str
);
7353 kfree(thinkpad_id
.model_str
);
7357 static int __init
thinkpad_acpi_module_init(void)
7361 tpacpi_lifecycle
= TPACPI_LIFE_INIT
;
7363 /* Parameter checking */
7364 if (hotkey_report_mode
> 2)
7367 /* Driver-level probe */
7369 ret
= get_thinkpad_model_data(&thinkpad_id
);
7372 "unable to get DMI data: %d\n", ret
);
7373 thinkpad_acpi_module_exit();
7376 ret
= probe_for_thinkpad();
7378 thinkpad_acpi_module_exit();
7382 /* Driver initialization */
7384 TPACPI_ACPIHANDLE_INIT(ecrd
);
7385 TPACPI_ACPIHANDLE_INIT(ecwr
);
7387 tpacpi_wq
= create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME
);
7389 thinkpad_acpi_module_exit();
7393 proc_dir
= proc_mkdir(TPACPI_PROC_DIR
, acpi_root_dir
);
7396 "unable to create proc dir " TPACPI_PROC_DIR
);
7397 thinkpad_acpi_module_exit();
7400 proc_dir
->owner
= THIS_MODULE
;
7402 ret
= platform_driver_register(&tpacpi_pdriver
);
7405 "unable to register main platform driver\n");
7406 thinkpad_acpi_module_exit();
7409 tp_features
.platform_drv_registered
= 1;
7411 ret
= platform_driver_register(&tpacpi_hwmon_pdriver
);
7414 "unable to register hwmon platform driver\n");
7415 thinkpad_acpi_module_exit();
7418 tp_features
.sensors_pdrv_registered
= 1;
7420 ret
= tpacpi_create_driver_attributes(&tpacpi_pdriver
.driver
);
7422 tp_features
.platform_drv_attrs_registered
= 1;
7423 ret
= tpacpi_create_driver_attributes(
7424 &tpacpi_hwmon_pdriver
.driver
);
7428 "unable to create sysfs driver attributes\n");
7429 thinkpad_acpi_module_exit();
7432 tp_features
.sensors_pdrv_attrs_registered
= 1;
7435 /* Device initialization */
7436 tpacpi_pdev
= platform_device_register_simple(TPACPI_DRVR_NAME
, -1,
7438 if (IS_ERR(tpacpi_pdev
)) {
7439 ret
= PTR_ERR(tpacpi_pdev
);
7441 printk(TPACPI_ERR
"unable to register platform device\n");
7442 thinkpad_acpi_module_exit();
7445 tpacpi_sensors_pdev
= platform_device_register_simple(
7446 TPACPI_HWMON_DRVR_NAME
,
7448 if (IS_ERR(tpacpi_sensors_pdev
)) {
7449 ret
= PTR_ERR(tpacpi_sensors_pdev
);
7450 tpacpi_sensors_pdev
= NULL
;
7452 "unable to register hwmon platform device\n");
7453 thinkpad_acpi_module_exit();
7456 ret
= device_create_file(&tpacpi_sensors_pdev
->dev
,
7457 &dev_attr_thinkpad_acpi_pdev_name
);
7460 "unable to create sysfs hwmon device attributes\n");
7461 thinkpad_acpi_module_exit();
7464 tp_features
.sensors_pdev_attrs_registered
= 1;
7465 tpacpi_hwmon
= hwmon_device_register(&tpacpi_sensors_pdev
->dev
);
7466 if (IS_ERR(tpacpi_hwmon
)) {
7467 ret
= PTR_ERR(tpacpi_hwmon
);
7468 tpacpi_hwmon
= NULL
;
7469 printk(TPACPI_ERR
"unable to register hwmon device\n");
7470 thinkpad_acpi_module_exit();
7473 mutex_init(&tpacpi_inputdev_send_mutex
);
7474 tpacpi_inputdev
= input_allocate_device();
7475 if (!tpacpi_inputdev
) {
7476 printk(TPACPI_ERR
"unable to allocate input device\n");
7477 thinkpad_acpi_module_exit();
7480 /* Prepare input device, but don't register */
7481 tpacpi_inputdev
->name
= "ThinkPad Extra Buttons";
7482 tpacpi_inputdev
->phys
= TPACPI_DRVR_NAME
"/input0";
7483 tpacpi_inputdev
->id
.bustype
= BUS_HOST
;
7484 tpacpi_inputdev
->id
.vendor
= (thinkpad_id
.vendor
) ?
7485 thinkpad_id
.vendor
:
7487 tpacpi_inputdev
->id
.product
= TPACPI_HKEY_INPUT_PRODUCT
;
7488 tpacpi_inputdev
->id
.version
= TPACPI_HKEY_INPUT_VERSION
;
7490 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
7491 ret
= ibm_init(&ibms_init
[i
]);
7492 if (ret
>= 0 && *ibms_init
[i
].param
)
7493 ret
= ibms_init
[i
].data
->write(ibms_init
[i
].param
);
7495 thinkpad_acpi_module_exit();
7499 ret
= input_register_device(tpacpi_inputdev
);
7501 printk(TPACPI_ERR
"unable to register input device\n");
7502 thinkpad_acpi_module_exit();
7505 tp_features
.input_device_registered
= 1;
7508 tpacpi_lifecycle
= TPACPI_LIFE_RUNNING
;
7512 /* Please remove this in year 2009 */
7513 MODULE_ALIAS("ibm_acpi");
7515 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME
);
7518 * DMI matching for module autoloading
7520 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7521 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
7523 * Only models listed in thinkwiki will be supported, so add yours
7524 * if it is not there yet.
7526 #define IBM_BIOS_MODULE_ALIAS(__type) \
7527 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
7529 /* Non-ancient thinkpads */
7530 MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
7531 MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
7533 /* Ancient thinkpad BIOSes have to be identified by
7534 * BIOS type or model number, and there are far less
7535 * BIOS types than model numbers... */
7536 IBM_BIOS_MODULE_ALIAS("I[BDHIMNOTWVYZ]");
7537 IBM_BIOS_MODULE_ALIAS("1[0368A-GIKM-PST]");
7538 IBM_BIOS_MODULE_ALIAS("K[UX-Z]");
7540 MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
7541 MODULE_DESCRIPTION(TPACPI_DESC
);
7542 MODULE_VERSION(TPACPI_VERSION
);
7543 MODULE_LICENSE("GPL");
7545 module_init(thinkpad_acpi_module_init
);
7546 module_exit(thinkpad_acpi_module_exit
);