2 * thinkpad_acpi.c - ThinkPad ACPI Extras
5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
24 #define TPACPI_VERSION "0.23"
25 #define TPACPI_SYSFS_VERSION 0x020400
29 * 2007-10-20 changelog trimmed down
31 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
34 * 2006-11-22 0.13 new maintainer
35 * changelog now lives in git commit history, and will
36 * not be updated further in-file.
38 * 2005-03-17 0.11 support for 600e, 770x
39 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
41 * 2005-01-16 0.9 use MODULE_VERSION
42 * thanks to Henrik Brix Andersen <brix@gentoo.org>
43 * fix parameter passing on module loading
44 * thanks to Rusty Russell <rusty@rustcorp.com.au>
45 * thanks to Jim Radford <radford@blackbean.org>
46 * 2004-11-08 0.8 fix init error case, don't return from a macro
47 * thanks to Chris Wright <chrisw@osdl.org>
50 #include <linux/kernel.h>
51 #include <linux/module.h>
52 #include <linux/init.h>
53 #include <linux/types.h>
54 #include <linux/string.h>
55 #include <linux/list.h>
56 #include <linux/mutex.h>
57 #include <linux/sched.h>
58 #include <linux/kthread.h>
59 #include <linux/freezer.h>
60 #include <linux/delay.h>
62 #include <linux/nvram.h>
63 #include <linux/proc_fs.h>
64 #include <linux/sysfs.h>
65 #include <linux/backlight.h>
67 #include <linux/platform_device.h>
68 #include <linux/hwmon.h>
69 #include <linux/hwmon-sysfs.h>
70 #include <linux/input.h>
71 #include <linux/leds.h>
72 #include <linux/rfkill.h>
73 #include <asm/uaccess.h>
75 #include <linux/dmi.h>
76 #include <linux/jiffies.h>
77 #include <linux/workqueue.h>
79 #include <acpi/acpi_drivers.h>
81 #include <linux/pci_ids.h>
84 /* ThinkPad CMOS commands */
85 #define TP_CMOS_VOLUME_DOWN 0
86 #define TP_CMOS_VOLUME_UP 1
87 #define TP_CMOS_VOLUME_MUTE 2
88 #define TP_CMOS_BRIGHTNESS_UP 4
89 #define TP_CMOS_BRIGHTNESS_DOWN 5
90 #define TP_CMOS_THINKLIGHT_ON 12
91 #define TP_CMOS_THINKLIGHT_OFF 13
95 TP_NVRAM_ADDR_HK2 = 0x57,
96 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
97 TP_NVRAM_ADDR_VIDEO = 0x59,
98 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
99 TP_NVRAM_ADDR_MIXER = 0x60,
102 /* NVRAM bit masks */
104 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
105 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
106 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
107 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
108 TP_NVRAM_MASK_THINKLIGHT = 0x10,
109 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
110 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
111 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
112 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
113 TP_NVRAM_MASK_MUTE = 0x40,
114 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
115 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
116 TP_NVRAM_POS_LEVEL_VOLUME = 0,
120 #define TPACPI_ACPI_HKEY_HID "IBM0068"
123 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
124 #define TPACPI_HKEY_INPUT_VERSION 0x4101
126 /* ACPI \WGSV commands */
128 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
129 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
130 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
131 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
134 /* TP_ACPI_WGSV_GET_STATE bits */
136 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
137 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
138 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
139 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
140 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
141 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
142 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
143 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
144 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
145 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
148 /****************************************************************************
152 #define TPACPI_NAME "thinkpad"
153 #define TPACPI_DESC "ThinkPad ACPI Extras"
154 #define TPACPI_FILE TPACPI_NAME "_acpi"
155 #define TPACPI_URL "http://ibm-acpi.sf.net/"
156 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
158 #define TPACPI_PROC_DIR "ibm"
159 #define TPACPI_ACPI_EVENT_PREFIX "ibm"
160 #define TPACPI_DRVR_NAME TPACPI_FILE
161 #define TPACPI_DRVR_SHORTNAME "tpacpi"
162 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
164 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
165 #define TPACPI_WORKQUEUE_NAME "ktpacpid"
167 #define TPACPI_MAX_ACPI_ARGS 3
170 #define TPACPI_LOG TPACPI_FILE ": "
171 #define TPACPI_EMERG KERN_EMERG TPACPI_LOG
172 #define TPACPI_ALERT KERN_ALERT TPACPI_LOG
173 #define TPACPI_CRIT KERN_CRIT TPACPI_LOG
174 #define TPACPI_ERR KERN_ERR TPACPI_LOG
175 #define TPACPI_WARN KERN_WARNING TPACPI_LOG
176 #define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
177 #define TPACPI_INFO KERN_INFO TPACPI_LOG
178 #define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
180 /* Debugging printk groups */
181 #define TPACPI_DBG_ALL 0xffff
182 #define TPACPI_DBG_DISCLOSETASK 0x8000
183 #define TPACPI_DBG_INIT 0x0001
184 #define TPACPI_DBG_EXIT 0x0002
185 #define TPACPI_DBG_RFKILL 0x0004
186 #define TPACPI_DBG_HKEY 0x0008
187 #define TPACPI_DBG_FAN 0x0010
188 #define TPACPI_DBG_BRGHT 0x0020
190 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
191 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
192 #define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
195 /****************************************************************************
196 * Driver-wide structs and misc. variables
201 struct tp_acpi_drv_struct {
202 const struct acpi_device_id *hid;
203 struct acpi_driver *driver;
205 void (*notify) (struct ibm_struct *, u32);
208 struct acpi_device *device;
214 int (*read) (char *);
215 int (*write) (char *);
217 void (*resume) (void);
218 void (*suspend) (pm_message_t state);
219 void (*shutdown) (void);
221 struct list_head all_drivers;
223 struct tp_acpi_drv_struct *acpi;
226 u8 acpi_driver_registered:1;
227 u8 acpi_notify_installed:1;
234 struct ibm_init_struct {
237 int (*init) (struct ibm_init_struct *);
238 struct ibm_struct *data;
249 u32 bright_16levels:1;
250 u32 bright_acpimode:1;
253 u32 fan_ctrl_status_undef:1;
255 u32 beep_needs_two_args:1;
256 u32 input_device_registered:1;
257 u32 platform_drv_registered:1;
258 u32 platform_drv_attrs_registered:1;
259 u32 sensors_pdrv_registered:1;
260 u32 sensors_pdrv_attrs_registered:1;
261 u32 sensors_pdev_attrs_registered:1;
262 u32 hotkey_poll_active:1;
266 u16 hotkey_mask_ff:1;
269 struct thinkpad_id_data {
270 unsigned int vendor; /* ThinkPad vendor:
271 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
273 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
274 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
276 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */
278 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */
281 char *model_str; /* ThinkPad T43 */
282 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
284 static struct thinkpad_id_data thinkpad_id;
287 TPACPI_LIFE_INIT = 0,
292 static int experimental;
293 static u32 dbg_level;
295 static struct workqueue_struct *tpacpi_wq;
303 /* Special LED class that can defer work */
304 struct tpacpi_led_classdev {
305 struct led_classdev led_classdev;
306 struct work_struct work;
307 enum led_status_t new_state;
311 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
312 static int dbg_wlswemul;
313 static int tpacpi_wlsw_emulstate;
314 static int dbg_bluetoothemul;
315 static int tpacpi_bluetooth_emulstate;
316 static int dbg_wwanemul;
317 static int tpacpi_wwan_emulstate;
318 static int dbg_uwbemul;
319 static int tpacpi_uwb_emulstate;
323 /*************************************************************************
327 #define dbg_printk(a_dbg_level, format, arg...) \
328 do { if (dbg_level & (a_dbg_level)) \
329 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
332 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
333 #define vdbg_printk dbg_printk
334 static const char *str_supported(int is_supported);
336 #define vdbg_printk(a_dbg_level, format, arg...) \
340 static void tpacpi_log_usertask(const char * const what)
342 printk(TPACPI_DEBUG "%s: access by process with PID %d\n",
343 what, task_tgid_vnr(current));
346 #define tpacpi_disclose_usertask(what, format, arg...) \
349 (dbg_level & TPACPI_DBG_DISCLOSETASK) && \
350 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
351 printk(TPACPI_DEBUG "%s: PID %d: " format, \
352 what, task_tgid_vnr(current), ## arg); \
357 * Quirk handling helpers
359 * ThinkPad IDs and versions seen in the field so far
360 * are two-characters from the set [0-9A-Z], i.e. base 36.
362 * We use values well outside that range as specials.
365 #define TPACPI_MATCH_ANY 0xffffU
366 #define TPACPI_MATCH_UNKNOWN 0U
368 /* TPID('1', 'Y') == 0x5931 */
369 #define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
371 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \
372 { .vendor = PCI_VENDOR_ID_IBM, \
373 .bios = TPID(__id1, __id2), \
374 .ec = TPACPI_MATCH_ANY, \
375 .quirks = (__quirk) }
377 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \
378 { .vendor = PCI_VENDOR_ID_LENOVO, \
379 .bios = TPID(__id1, __id2), \
380 .ec = TPACPI_MATCH_ANY, \
381 .quirks = (__quirk) }
383 struct tpacpi_quirk {
387 unsigned long quirks;
391 * tpacpi_check_quirks() - search BIOS/EC version on a list
392 * @qlist: array of &struct tpacpi_quirk
393 * @qlist_size: number of elements in @qlist
395 * Iterates over a quirks list until one is found that matches the
396 * ThinkPad's vendor, BIOS and EC model.
398 * Returns 0 if nothing matches, otherwise returns the quirks field of
399 * the matching &struct tpacpi_quirk entry.
401 * The match criteria is: vendor, ec and bios much match.
403 static unsigned long __init tpacpi_check_quirks(
404 const struct tpacpi_quirk *qlist,
405 unsigned int qlist_size)
408 if ((qlist->vendor == thinkpad_id.vendor ||
409 qlist->vendor == TPACPI_MATCH_ANY) &&
410 (qlist->bios == thinkpad_id.bios_model ||
411 qlist->bios == TPACPI_MATCH_ANY) &&
412 (qlist->ec == thinkpad_id.ec_model ||
413 qlist->ec == TPACPI_MATCH_ANY))
414 return qlist->quirks;
423 /****************************************************************************
424 ****************************************************************************
426 * ACPI Helpers and device model
428 ****************************************************************************
429 ****************************************************************************/
431 /*************************************************************************
435 static acpi_handle root_handle;
437 #define TPACPI_HANDLE(object, parent, paths...) \
438 static acpi_handle object##_handle; \
439 static acpi_handle *object##_parent = &parent##_handle; \
440 static char *object##_path; \
441 static char *object##_paths[] = { paths }
443 TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
444 "\\_SB.PCI.ISA.EC", /* 570 */
445 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
446 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
447 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
448 "\\_SB.PCI0.ICH3.EC0", /* R31 */
449 "\\_SB.PCI0.LPC.EC", /* all others */
452 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
453 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
455 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
457 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
458 "\\CMS", /* R40, R40e */
461 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
462 "^HKEY", /* R30, R31 */
463 "HKEY", /* all others */
466 TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
467 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
468 "\\_SB.PCI0.VID0", /* 770e */
469 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
470 "\\_SB.PCI0.AGP.VID", /* all others */
474 /*************************************************************************
478 static int acpi_evalf(acpi_handle handle,
479 void *res, char *method, char *fmt, ...)
482 struct acpi_object_list params;
483 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
484 struct acpi_buffer result, *resultp;
485 union acpi_object out_obj;
493 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
506 params.pointer = &in_objs[0];
513 in_objs[params.count].integer.value = va_arg(ap, int);
514 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
516 /* add more types as needed */
518 printk(TPACPI_ERR "acpi_evalf() called "
519 "with invalid format character '%c'\n", c);
525 if (res_type != 'v') {
526 result.length = sizeof(out_obj);
527 result.pointer = &out_obj;
532 status = acpi_evaluate_object(handle, method, ¶ms, resultp);
537 *(int *)res = out_obj.integer.value;
538 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
541 success = status == AE_OK;
543 /* add more types as needed */
545 printk(TPACPI_ERR "acpi_evalf() called "
546 "with invalid format character '%c'\n", res_type);
550 if (!success && !quiet)
551 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
552 method, fmt0, status);
557 static int acpi_ec_read(int i, u8 *p)
562 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
566 if (ec_read(i, p) < 0)
573 static int acpi_ec_write(int i, u8 v)
576 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
579 if (ec_write(i, v) < 0)
586 static int issue_thinkpad_cmos_command(int cmos_cmd)
591 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
597 /*************************************************************************
601 #define TPACPI_ACPIHANDLE_INIT(object) \
602 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
603 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
605 static void drv_acpi_handle_init(char *name,
606 acpi_handle *handle, acpi_handle parent,
607 char **paths, int num_paths, char **path)
612 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
615 for (i = 0; i < num_paths; i++) {
616 status = acpi_get_handle(parent, paths[i], handle);
617 if (ACPI_SUCCESS(status)) {
619 dbg_printk(TPACPI_DBG_INIT,
620 "Found ACPI handle %s for %s\n",
626 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
631 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
633 struct ibm_struct *ibm = data;
635 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
638 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
641 ibm->acpi->notify(ibm, event);
644 static int __init setup_acpi_notify(struct ibm_struct *ibm)
651 if (!*ibm->acpi->handle)
654 vdbg_printk(TPACPI_DBG_INIT,
655 "setting up ACPI notify for %s\n", ibm->name);
657 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
659 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
664 ibm->acpi->device->driver_data = ibm;
665 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
666 TPACPI_ACPI_EVENT_PREFIX,
669 status = acpi_install_notify_handler(*ibm->acpi->handle,
670 ibm->acpi->type, dispatch_acpi_notify, ibm);
671 if (ACPI_FAILURE(status)) {
672 if (status == AE_ALREADY_EXISTS) {
674 "another device driver is already "
675 "handling %s events\n", ibm->name);
678 "acpi_install_notify_handler(%s) failed: %d\n",
683 ibm->flags.acpi_notify_installed = 1;
687 static int __init tpacpi_device_add(struct acpi_device *device)
692 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
696 dbg_printk(TPACPI_DBG_INIT,
697 "registering %s as an ACPI driver\n", ibm->name);
701 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
702 if (!ibm->acpi->driver) {
704 "failed to allocate memory for ibm->acpi->driver\n");
708 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
709 ibm->acpi->driver->ids = ibm->acpi->hid;
711 ibm->acpi->driver->ops.add = &tpacpi_device_add;
713 rc = acpi_bus_register_driver(ibm->acpi->driver);
715 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
717 kfree(ibm->acpi->driver);
718 ibm->acpi->driver = NULL;
720 ibm->flags.acpi_driver_registered = 1;
726 /****************************************************************************
727 ****************************************************************************
731 ****************************************************************************
732 ****************************************************************************/
734 static int dispatch_procfs_read(char *page, char **start, off_t off,
735 int count, int *eof, void *data)
737 struct ibm_struct *ibm = data;
740 if (!ibm || !ibm->read)
743 len = ibm->read(page);
747 if (len <= off + count)
759 static int dispatch_procfs_write(struct file *file,
760 const char __user *userbuf,
761 unsigned long count, void *data)
763 struct ibm_struct *ibm = data;
767 if (!ibm || !ibm->write)
769 if (count > PAGE_SIZE - 2)
772 kernbuf = kmalloc(count + 2, GFP_KERNEL);
776 if (copy_from_user(kernbuf, userbuf, count)) {
782 strcat(kernbuf, ",");
783 ret = ibm->write(kernbuf);
792 static char *next_cmd(char **cmds)
797 while ((end = strchr(start, ',')) && end == start)
809 /****************************************************************************
810 ****************************************************************************
812 * Device model: input, hwmon and platform
814 ****************************************************************************
815 ****************************************************************************/
817 static struct platform_device *tpacpi_pdev;
818 static struct platform_device *tpacpi_sensors_pdev;
819 static struct device *tpacpi_hwmon;
820 static struct input_dev *tpacpi_inputdev;
821 static struct mutex tpacpi_inputdev_send_mutex;
822 static LIST_HEAD(tpacpi_all_drivers);
824 static int tpacpi_suspend_handler(struct platform_device *pdev,
827 struct ibm_struct *ibm, *itmp;
829 list_for_each_entry_safe(ibm, itmp,
833 (ibm->suspend)(state);
839 static int tpacpi_resume_handler(struct platform_device *pdev)
841 struct ibm_struct *ibm, *itmp;
843 list_for_each_entry_safe(ibm, itmp,
853 static void tpacpi_shutdown_handler(struct platform_device *pdev)
855 struct ibm_struct *ibm, *itmp;
857 list_for_each_entry_safe(ibm, itmp,
865 static struct platform_driver tpacpi_pdriver = {
867 .name = TPACPI_DRVR_NAME,
868 .owner = THIS_MODULE,
870 .suspend = tpacpi_suspend_handler,
871 .resume = tpacpi_resume_handler,
872 .shutdown = tpacpi_shutdown_handler,
875 static struct platform_driver tpacpi_hwmon_pdriver = {
877 .name = TPACPI_HWMON_DRVR_NAME,
878 .owner = THIS_MODULE,
882 /*************************************************************************
883 * sysfs support helpers
886 struct attribute_set {
887 unsigned int members, max_members;
888 struct attribute_group group;
891 struct attribute_set_obj {
892 struct attribute_set s;
894 } __attribute__((packed));
896 static struct attribute_set *create_attr_set(unsigned int max_members,
899 struct attribute_set_obj *sobj;
901 if (max_members == 0)
904 /* Allocates space for implicit NULL at the end too */
905 sobj = kzalloc(sizeof(struct attribute_set_obj) +
906 max_members * sizeof(struct attribute *),
910 sobj->s.max_members = max_members;
911 sobj->s.group.attrs = &sobj->a;
912 sobj->s.group.name = name;
917 #define destroy_attr_set(_set) \
920 /* not multi-threaded safe, use it in a single thread per set */
921 static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
926 if (s->members >= s->max_members)
929 s->group.attrs[s->members] = attr;
935 static int add_many_to_attr_set(struct attribute_set *s,
936 struct attribute **attr,
941 for (i = 0; i < count; i++) {
942 res = add_to_attr_set(s, attr[i]);
950 static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
952 sysfs_remove_group(kobj, &s->group);
956 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
957 sysfs_create_group(_kobj, &_attr_set->group)
959 static int parse_strtoul(const char *buf,
960 unsigned long max, unsigned long *value)
964 while (*buf && isspace(*buf))
966 *value = simple_strtoul(buf, &endp, 0);
967 while (*endp && isspace(*endp))
969 if (*endp || *value > max)
975 static void tpacpi_disable_brightness_delay(void)
977 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
979 "ACPI backlight control delay disabled\n");
982 static int __init tpacpi_query_bcl_levels(acpi_handle handle)
984 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
985 union acpi_object *obj;
988 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
989 obj = (union acpi_object *)buffer.pointer;
990 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
991 printk(TPACPI_ERR "Unknown _BCL data, "
992 "please report this to %s\n", TPACPI_MAIL);
995 rc = obj->package.count;
1001 kfree(buffer.pointer);
1005 static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle,
1006 u32 lvl, void *context, void **rv)
1008 char name[ACPI_PATH_SEGMENT_LENGTH];
1009 struct acpi_buffer buffer = { sizeof(name), &name };
1011 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
1012 !strncmp("_BCL", name, sizeof(name) - 1)) {
1013 BUG_ON(!rv || !*rv);
1014 **(int **)rv = tpacpi_query_bcl_levels(handle);
1015 return AE_CTRL_TERMINATE;
1022 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
1024 static int __init tpacpi_check_std_acpi_brightness_support(void)
1028 void *bcl_ptr = &bcl_levels;
1031 TPACPI_ACPIHANDLE_INIT(vid);
1037 * Search for a _BCL method, and execute it. This is safe on all
1038 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
1039 * BIOS in ACPI backlight control mode. We do NOT have to care
1040 * about calling the _BCL method in an enabled video device, any
1041 * will do for our purposes.
1044 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
1045 tpacpi_acpi_walk_find_bcl, NULL,
1048 if (ACPI_SUCCESS(status) && bcl_levels > 2) {
1049 tp_features.bright_acpimode = 1;
1050 return (bcl_levels - 2);
1056 static void printk_deprecated_attribute(const char * const what,
1057 const char * const details)
1059 tpacpi_log_usertask("deprecated sysfs attribute");
1060 printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and "
1061 "will be removed. %s\n",
1065 /*************************************************************************
1066 * rfkill and radio control support helpers
1070 * ThinkPad-ACPI firmware handling model:
1072 * WLSW (master wireless switch) is event-driven, and is common to all
1073 * firmware-controlled radios. It cannot be controlled, just monitored,
1074 * as expected. It overrides all radio state in firmware
1076 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1077 * (TODO: verify how WLSW interacts with the returned radio state).
1079 * The only time there are shadow radio state changes, is when
1080 * masked-off hotkeys are used.
1084 * Internal driver API for radio state:
1086 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1087 * bool: true means radio blocked (off)
1089 enum tpacpi_rfkill_state {
1090 TPACPI_RFK_RADIO_OFF = 0,
1094 /* rfkill switches */
1095 enum tpacpi_rfk_id {
1096 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
1097 TPACPI_RFK_WWAN_SW_ID,
1098 TPACPI_RFK_UWB_SW_ID,
1102 static const char *tpacpi_rfkill_names[] = {
1103 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
1104 [TPACPI_RFK_WWAN_SW_ID] = "wwan",
1105 [TPACPI_RFK_UWB_SW_ID] = "uwb",
1106 [TPACPI_RFK_SW_MAX] = NULL
1109 /* ThinkPad-ACPI rfkill subdriver */
1111 struct rfkill *rfkill;
1112 enum tpacpi_rfk_id id;
1113 const struct tpacpi_rfk_ops *ops;
1116 struct tpacpi_rfk_ops {
1117 /* firmware interface */
1118 int (*get_status)(void);
1119 int (*set_status)(const enum tpacpi_rfkill_state);
1122 static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
1124 /* Query FW and update rfkill sw state for a given rfkill switch */
1125 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
1132 status = (tp_rfk->ops->get_status)();
1136 rfkill_set_sw_state(tp_rfk->rfkill,
1137 (status == TPACPI_RFK_RADIO_OFF));
1142 /* Query FW and update rfkill sw state for all rfkill switches */
1143 static void tpacpi_rfk_update_swstate_all(void)
1147 for (i = 0; i < TPACPI_RFK_SW_MAX; i++)
1148 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]);
1152 * Sync the HW-blocking state of all rfkill switches,
1153 * do notice it causes the rfkill core to schedule uevents
1155 static void tpacpi_rfk_update_hwblock_state(bool blocked)
1158 struct tpacpi_rfk *tp_rfk;
1160 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
1161 tp_rfk = tpacpi_rfkill_switches[i];
1163 if (rfkill_set_hw_state(tp_rfk->rfkill,
1165 /* ignore -- we track sw block */
1171 /* Call to get the WLSW state from the firmware */
1172 static int hotkey_get_wlsw(void);
1174 /* Call to query WLSW state and update all rfkill switches */
1175 static bool tpacpi_rfk_check_hwblock_state(void)
1177 int res = hotkey_get_wlsw();
1180 /* When unknown or unsupported, we have to assume it is unblocked */
1184 hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
1185 tpacpi_rfk_update_hwblock_state(hw_blocked);
1190 static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
1192 struct tpacpi_rfk *tp_rfk = data;
1195 dbg_printk(TPACPI_DBG_RFKILL,
1196 "request to change radio state to %s\n",
1197 blocked ? "blocked" : "unblocked");
1199 /* try to set radio state */
1200 res = (tp_rfk->ops->set_status)(blocked ?
1201 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
1203 /* and update the rfkill core with whatever the FW really did */
1204 tpacpi_rfk_update_swstate(tp_rfk);
1206 return (res < 0) ? res : 0;
1209 static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
1210 .set_block = tpacpi_rfk_hook_set_block,
1213 static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
1214 const struct tpacpi_rfk_ops *tp_rfkops,
1215 const enum rfkill_type rfktype,
1217 const bool set_default)
1219 struct tpacpi_rfk *atp_rfk;
1221 bool sw_state = false;
1224 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
1226 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
1228 atp_rfk->rfkill = rfkill_alloc(name,
1231 &tpacpi_rfk_rfkill_ops,
1233 if (!atp_rfk || !atp_rfk->rfkill) {
1235 "failed to allocate memory for rfkill class\n");
1241 atp_rfk->ops = tp_rfkops;
1243 sw_status = (tp_rfkops->get_status)();
1244 if (sw_status < 0) {
1246 "failed to read initial state for %s, error %d\n",
1249 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
1251 /* try to keep the initial state, since we ask the
1252 * firmware to preserve it across S5 in NVRAM */
1253 rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
1256 rfkill_set_hw_state(atp_rfk->rfkill, tpacpi_rfk_check_hwblock_state());
1258 res = rfkill_register(atp_rfk->rfkill);
1261 "failed to register %s rfkill switch: %d\n",
1263 rfkill_destroy(atp_rfk->rfkill);
1268 tpacpi_rfkill_switches[id] = atp_rfk;
1272 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
1274 struct tpacpi_rfk *tp_rfk;
1276 BUG_ON(id >= TPACPI_RFK_SW_MAX);
1278 tp_rfk = tpacpi_rfkill_switches[id];
1280 rfkill_unregister(tp_rfk->rfkill);
1281 tpacpi_rfkill_switches[id] = NULL;
1286 static void printk_deprecated_rfkill_attribute(const char * const what)
1288 printk_deprecated_attribute(what,
1289 "Please switch to generic rfkill before year 2010");
1292 /* sysfs <radio> enable ------------------------------------------------ */
1293 static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
1294 struct device_attribute *attr,
1299 printk_deprecated_rfkill_attribute(attr->attr.name);
1301 /* This is in the ABI... */
1302 if (tpacpi_rfk_check_hwblock_state()) {
1303 status = TPACPI_RFK_RADIO_OFF;
1305 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1310 return snprintf(buf, PAGE_SIZE, "%d\n",
1311 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
1314 static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
1315 struct device_attribute *attr,
1316 const char *buf, size_t count)
1321 printk_deprecated_rfkill_attribute(attr->attr.name);
1323 if (parse_strtoul(buf, 1, &t))
1326 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
1328 /* This is in the ABI... */
1329 if (tpacpi_rfk_check_hwblock_state() && !!t)
1332 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
1333 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
1334 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1336 return (res < 0) ? res : count;
1339 /* procfs -------------------------------------------------------------- */
1340 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, char *p)
1344 if (id >= TPACPI_RFK_SW_MAX)
1345 len += sprintf(p + len, "status:\t\tnot supported\n");
1349 /* This is in the ABI... */
1350 if (tpacpi_rfk_check_hwblock_state()) {
1351 status = TPACPI_RFK_RADIO_OFF;
1353 status = tpacpi_rfk_update_swstate(
1354 tpacpi_rfkill_switches[id]);
1359 len += sprintf(p + len, "status:\t\t%s\n",
1360 (status == TPACPI_RFK_RADIO_ON) ?
1361 "enabled" : "disabled");
1362 len += sprintf(p + len, "commands:\tenable, disable\n");
1368 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
1374 if (id >= TPACPI_RFK_SW_MAX)
1377 while ((cmd = next_cmd(&buf))) {
1378 if (strlencmp(cmd, "enable") == 0)
1379 status = TPACPI_RFK_RADIO_ON;
1380 else if (strlencmp(cmd, "disable") == 0)
1381 status = TPACPI_RFK_RADIO_OFF;
1387 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1388 (status == TPACPI_RFK_RADIO_ON) ?
1389 "enable" : "disable",
1390 tpacpi_rfkill_names[id]);
1391 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
1392 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1398 /*************************************************************************
1399 * thinkpad-acpi driver attributes
1402 /* interface_version --------------------------------------------------- */
1403 static ssize_t tpacpi_driver_interface_version_show(
1404 struct device_driver *drv,
1407 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1410 static DRIVER_ATTR(interface_version, S_IRUGO,
1411 tpacpi_driver_interface_version_show, NULL);
1413 /* debug_level --------------------------------------------------------- */
1414 static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
1417 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1420 static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
1421 const char *buf, size_t count)
1425 if (parse_strtoul(buf, 0xffff, &t))
1433 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
1434 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
1436 /* version ------------------------------------------------------------- */
1437 static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
1440 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1441 TPACPI_DESC, TPACPI_VERSION);
1444 static DRIVER_ATTR(version, S_IRUGO,
1445 tpacpi_driver_version_show, NULL);
1447 /* --------------------------------------------------------------------- */
1449 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1451 /* wlsw_emulstate ------------------------------------------------------ */
1452 static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
1455 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1458 static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
1459 const char *buf, size_t count)
1463 if (parse_strtoul(buf, 1, &t))
1466 if (tpacpi_wlsw_emulstate != !!t) {
1467 tpacpi_wlsw_emulstate = !!t;
1468 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
1474 static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
1475 tpacpi_driver_wlsw_emulstate_show,
1476 tpacpi_driver_wlsw_emulstate_store);
1478 /* bluetooth_emulstate ------------------------------------------------- */
1479 static ssize_t tpacpi_driver_bluetooth_emulstate_show(
1480 struct device_driver *drv,
1483 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1486 static ssize_t tpacpi_driver_bluetooth_emulstate_store(
1487 struct device_driver *drv,
1488 const char *buf, size_t count)
1492 if (parse_strtoul(buf, 1, &t))
1495 tpacpi_bluetooth_emulstate = !!t;
1500 static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
1501 tpacpi_driver_bluetooth_emulstate_show,
1502 tpacpi_driver_bluetooth_emulstate_store);
1504 /* wwan_emulstate ------------------------------------------------- */
1505 static ssize_t tpacpi_driver_wwan_emulstate_show(
1506 struct device_driver *drv,
1509 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1512 static ssize_t tpacpi_driver_wwan_emulstate_store(
1513 struct device_driver *drv,
1514 const char *buf, size_t count)
1518 if (parse_strtoul(buf, 1, &t))
1521 tpacpi_wwan_emulstate = !!t;
1526 static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
1527 tpacpi_driver_wwan_emulstate_show,
1528 tpacpi_driver_wwan_emulstate_store);
1530 /* uwb_emulstate ------------------------------------------------- */
1531 static ssize_t tpacpi_driver_uwb_emulstate_show(
1532 struct device_driver *drv,
1535 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1538 static ssize_t tpacpi_driver_uwb_emulstate_store(
1539 struct device_driver *drv,
1540 const char *buf, size_t count)
1544 if (parse_strtoul(buf, 1, &t))
1547 tpacpi_uwb_emulstate = !!t;
1552 static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
1553 tpacpi_driver_uwb_emulstate_show,
1554 tpacpi_driver_uwb_emulstate_store);
1557 /* --------------------------------------------------------------------- */
1559 static struct driver_attribute *tpacpi_driver_attributes[] = {
1560 &driver_attr_debug_level, &driver_attr_version,
1561 &driver_attr_interface_version,
1564 static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1570 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1571 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1575 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1576 if (!res && dbg_wlswemul)
1577 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1578 if (!res && dbg_bluetoothemul)
1579 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1580 if (!res && dbg_wwanemul)
1581 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
1582 if (!res && dbg_uwbemul)
1583 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
1589 static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1593 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
1594 driver_remove_file(drv, tpacpi_driver_attributes[i]);
1596 #ifdef THINKPAD_ACPI_DEBUGFACILITIES
1597 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1598 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1599 driver_remove_file(drv, &driver_attr_wwan_emulstate);
1600 driver_remove_file(drv, &driver_attr_uwb_emulstate);
1604 /*************************************************************************
1609 * Table of recommended minimum BIOS versions
1611 * Reasons for listing:
1612 * 1. Stable BIOS, listed because the unknown ammount of
1613 * bugs and bad ACPI behaviour on older versions
1615 * 2. BIOS or EC fw with known bugs that trigger on Linux
1617 * 3. BIOS with known reduced functionality in older versions
1619 * We recommend the latest BIOS and EC version.
1620 * We only support the latest BIOS and EC fw version as a rule.
1622 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1623 * Information from users in ThinkWiki
1625 * WARNING: we use this table also to detect that the machine is
1626 * a ThinkPad in some cases, so don't remove entries lightly.
1629 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1630 { .vendor = (__v), \
1631 .bios = TPID(__id1, __id2), \
1632 .ec = TPACPI_MATCH_ANY, \
1633 .quirks = TPACPI_MATCH_ANY << 16 \
1634 | (__bv1) << 8 | (__bv2) }
1636 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
1637 __eid1, __eid2, __ev1, __ev2) \
1638 { .vendor = (__v), \
1639 .bios = TPID(__bid1, __bid2), \
1640 .ec = TPID(__eid1, __eid2), \
1641 .quirks = (__ev1) << 24 | (__ev2) << 16 \
1642 | (__bv1) << 8 | (__bv2) }
1644 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1645 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1647 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1648 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1649 __bv1, __bv2, __id1, __id2, __ev1, __ev2)
1651 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1652 __eid1, __eid2, __ev1, __ev2) \
1653 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1654 __bv1, __bv2, __eid1, __eid2, __ev1, __ev2)
1656 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1657 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1659 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1660 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
1661 __bv1, __bv2, __id1, __id2, __ev1, __ev2)
1663 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1664 __eid1, __eid2, __ev1, __ev2) \
1665 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
1666 __bv1, __bv2, __eid1, __eid2, __ev1, __ev2)
1668 static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
1669 /* Numeric models ------------------ */
1670 /* FW MODEL BIOS VERS */
1671 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1672 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1673 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1674 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1675 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1676 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1677 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1678 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1679 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1681 /* A-series ------------------------- */
1682 /* FW MODEL BIOS VERS EC VERS */
1683 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1684 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1685 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1686 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1687 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1688 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1689 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1690 TPV_QI0('1', '3', '2', '0'), /* A22m */
1691 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1692 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1693 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1695 /* G-series ------------------------- */
1696 /* FW MODEL BIOS VERS */
1697 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1698 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1700 /* R-series, T-series --------------- */
1701 /* FW MODEL BIOS VERS EC VERS */
1702 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1703 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1704 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1705 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1706 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1707 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1708 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1709 T40/p, T41/p, T42/p (1) */
1710 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1711 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1712 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1713 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1715 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1716 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1717 TPV_QI0('1', '6', '3', '2'), /* T22 */
1718 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1719 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1720 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1722 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1723 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
1724 TPV_QL0('7', 'E', 'D', '0'), /* R60e, R60i */
1726 /* BIOS FW BIOS VERS EC FW EC VERS */
1727 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1728 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1730 /* X-series ------------------------- */
1731 /* FW MODEL BIOS VERS EC VERS */
1732 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1733 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1734 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1735 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1736 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1737 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1738 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1740 TPV_QL0('7', 'B', 'D', '7'), /* X60/s */
1741 TPV_QL0('7', 'J', '3', '0'), /* X60t */
1743 /* (0) - older versions lack DMI EC fw string and functionality */
1744 /* (1) - older versions known to lack functionality */
1755 static void __init tpacpi_check_outdated_fw(void)
1757 unsigned long fwvers;
1758 u16 ec_version, bios_version;
1760 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
1761 ARRAY_SIZE(tpacpi_bios_version_qtable));
1766 bios_version = fwvers & 0xffffU;
1767 ec_version = (fwvers >> 16) & 0xffffU;
1769 /* note that unknown versions are set to 0x0000 and we use that */
1770 if ((bios_version > thinkpad_id.bios_release) ||
1771 (ec_version > thinkpad_id.ec_release &&
1772 ec_version != TPACPI_MATCH_ANY)) {
1774 * The changelogs would let us track down the exact
1775 * reason, but it is just too much of a pain to track
1776 * it. We only list BIOSes that are either really
1777 * broken, or really stable to begin with, so it is
1778 * best if the user upgrades the firmware anyway.
1781 "WARNING: Outdated ThinkPad BIOS/EC firmware\n");
1783 "WARNING: This firmware may be missing critical bug "
1784 "fixes and/or important features\n");
1788 static bool __init tpacpi_is_fw_known(void)
1790 return tpacpi_check_quirks(tpacpi_bios_version_qtable,
1791 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
1794 /****************************************************************************
1795 ****************************************************************************
1799 ****************************************************************************
1800 ****************************************************************************/
1802 /*************************************************************************
1803 * thinkpad-acpi init subdriver
1806 static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
1808 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
1809 printk(TPACPI_INFO "%s\n", TPACPI_URL);
1811 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
1812 (thinkpad_id.bios_version_str) ?
1813 thinkpad_id.bios_version_str : "unknown",
1814 (thinkpad_id.ec_version_str) ?
1815 thinkpad_id.ec_version_str : "unknown");
1817 if (thinkpad_id.vendor && thinkpad_id.model_str)
1818 printk(TPACPI_INFO "%s %s, model %s\n",
1819 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
1820 "IBM" : ((thinkpad_id.vendor ==
1821 PCI_VENDOR_ID_LENOVO) ?
1822 "Lenovo" : "Unknown vendor"),
1823 thinkpad_id.model_str,
1824 (thinkpad_id.nummodel_str) ?
1825 thinkpad_id.nummodel_str : "unknown");
1827 tpacpi_check_outdated_fw();
1831 static int thinkpad_acpi_driver_read(char *p)
1835 len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC);
1836 len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION);
1841 static struct ibm_struct thinkpad_acpi_driver_data = {
1843 .read = thinkpad_acpi_driver_read,
1846 /*************************************************************************
1850 enum { /* hot key scan codes (derived from ACPI DSDT) */
1851 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1852 TP_ACPI_HOTKEYSCAN_FNF2,
1853 TP_ACPI_HOTKEYSCAN_FNF3,
1854 TP_ACPI_HOTKEYSCAN_FNF4,
1855 TP_ACPI_HOTKEYSCAN_FNF5,
1856 TP_ACPI_HOTKEYSCAN_FNF6,
1857 TP_ACPI_HOTKEYSCAN_FNF7,
1858 TP_ACPI_HOTKEYSCAN_FNF8,
1859 TP_ACPI_HOTKEYSCAN_FNF9,
1860 TP_ACPI_HOTKEYSCAN_FNF10,
1861 TP_ACPI_HOTKEYSCAN_FNF11,
1862 TP_ACPI_HOTKEYSCAN_FNF12,
1863 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1864 TP_ACPI_HOTKEYSCAN_FNINSERT,
1865 TP_ACPI_HOTKEYSCAN_FNDELETE,
1866 TP_ACPI_HOTKEYSCAN_FNHOME,
1867 TP_ACPI_HOTKEYSCAN_FNEND,
1868 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1869 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1870 TP_ACPI_HOTKEYSCAN_FNSPACE,
1871 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1872 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1873 TP_ACPI_HOTKEYSCAN_MUTE,
1874 TP_ACPI_HOTKEYSCAN_THINKPAD,
1877 enum { /* Keys available through NVRAM polling */
1878 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1879 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1882 enum { /* Positions of some of the keys in hotkey masks */
1883 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1884 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1885 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1886 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1887 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1888 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1889 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1890 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1891 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1892 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1893 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1896 enum { /* NVRAM to ACPI HKEY group map */
1897 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1898 TP_ACPI_HKEY_ZOOM_MASK |
1899 TP_ACPI_HKEY_DISPSWTCH_MASK |
1900 TP_ACPI_HKEY_HIBERNATE_MASK,
1901 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1902 TP_ACPI_HKEY_BRGHTDWN_MASK,
1903 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1904 TP_ACPI_HKEY_VOLDWN_MASK |
1905 TP_ACPI_HKEY_MUTE_MASK,
1908 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1909 struct tp_nvram_state {
1910 u16 thinkpad_toggle:1;
1912 u16 display_toggle:1;
1913 u16 thinklight_toggle:1;
1914 u16 hibernate_toggle:1;
1915 u16 displayexp_toggle:1;
1916 u16 display_state:1;
1917 u16 brightness_toggle:1;
1918 u16 volume_toggle:1;
1921 u8 brightness_level;
1925 /* kthread for the hotkey poller */
1926 static struct task_struct *tpacpi_hotkey_task;
1928 /* Acquired while the poller kthread is running, use to sync start/stop */
1929 static struct mutex hotkey_thread_mutex;
1932 * Acquire mutex to write poller control variables.
1933 * Increment hotkey_config_change when changing them.
1935 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1937 static struct mutex hotkey_thread_data_mutex;
1938 static unsigned int hotkey_config_change;
1941 * hotkey poller control variables
1943 * Must be atomic or readers will also need to acquire mutex
1945 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1946 static unsigned int hotkey_poll_freq = 10; /* Hz */
1948 #define HOTKEY_CONFIG_CRITICAL_START \
1950 mutex_lock(&hotkey_thread_data_mutex); \
1951 hotkey_config_change++; \
1953 #define HOTKEY_CONFIG_CRITICAL_END \
1954 mutex_unlock(&hotkey_thread_data_mutex);
1956 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1958 #define hotkey_source_mask 0U
1959 #define HOTKEY_CONFIG_CRITICAL_START
1960 #define HOTKEY_CONFIG_CRITICAL_END
1962 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1964 static struct mutex hotkey_mutex;
1966 static enum { /* Reasons for waking up */
1967 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1968 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1969 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1970 } hotkey_wakeup_reason;
1972 static int hotkey_autosleep_ack;
1974 static u32 hotkey_orig_mask;
1975 static u32 hotkey_all_mask;
1976 static u32 hotkey_reserved_mask;
1977 static u32 hotkey_mask;
1979 static unsigned int hotkey_report_mode;
1981 static u16 *hotkey_keycode_map;
1983 static struct attribute_set *hotkey_dev_attributes;
1985 /* HKEY.MHKG() return bits */
1986 #define TP_HOTKEY_TABLET_MASK (1 << 3)
1988 static int hotkey_get_wlsw(void)
1992 if (!tp_features.hotkey_wlsw)
1995 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1997 return (tpacpi_wlsw_emulstate) ?
1998 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
2001 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
2004 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
2007 static int hotkey_get_tablet_mode(int *status)
2011 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
2014 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
2019 * Call with hotkey_mutex held
2021 static int hotkey_mask_get(void)
2025 if (tp_features.hotkey_mask) {
2026 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
2029 HOTKEY_CONFIG_CRITICAL_START
2030 hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
2031 HOTKEY_CONFIG_CRITICAL_END
2037 * Call with hotkey_mutex held
2039 static int hotkey_mask_set(u32 mask)
2044 if (tp_features.hotkey_mask) {
2045 if (!tp_warned.hotkey_mask_ff &&
2046 (mask == 0xffff || mask == 0xffffff ||
2047 mask == 0xffffffff)) {
2048 tp_warned.hotkey_mask_ff = 1;
2049 printk(TPACPI_NOTICE
2050 "setting the hotkey mask to 0x%08x is likely "
2051 "not the best way to go about it\n", mask);
2052 printk(TPACPI_NOTICE
2053 "please consider using the driver defaults, "
2054 "and refer to up-to-date thinkpad-acpi "
2058 HOTKEY_CONFIG_CRITICAL_START
2059 for (i = 0; i < 32; i++) {
2061 /* enable in firmware mask only keys not in NVRAM
2062 * mode, but enable the key in the cached hotkey_mask
2063 * regardless of mode, or the key will end up
2064 * disabled by hotkey_mask_get() */
2065 if (!acpi_evalf(hkey_handle,
2066 NULL, "MHKM", "vdd", i + 1,
2067 !!((mask & ~hotkey_source_mask) & m))) {
2071 hotkey_mask = (hotkey_mask & ~m) | (mask & m);
2074 HOTKEY_CONFIG_CRITICAL_END
2076 /* hotkey_mask_get must be called unconditionally below */
2077 if (!hotkey_mask_get() && !rc &&
2078 (hotkey_mask & ~hotkey_source_mask) !=
2079 (mask & ~hotkey_source_mask)) {
2080 printk(TPACPI_NOTICE
2081 "requested hot key mask 0x%08x, but "
2082 "firmware forced it to 0x%08x\n",
2086 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2087 HOTKEY_CONFIG_CRITICAL_START
2088 hotkey_mask = mask & hotkey_source_mask;
2089 HOTKEY_CONFIG_CRITICAL_END
2091 if (hotkey_mask != mask) {
2092 printk(TPACPI_NOTICE
2093 "requested hot key mask 0x%08x, "
2094 "forced to 0x%08x (NVRAM poll mask is "
2095 "0x%08x): no firmware mask support\n",
2096 mask, hotkey_mask, hotkey_source_mask);
2101 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2107 static int hotkey_status_get(int *status)
2109 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
2115 static int hotkey_status_set(bool enable)
2117 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
2123 static void tpacpi_input_send_tabletsw(void)
2127 if (tp_features.hotkey_tablet &&
2128 !hotkey_get_tablet_mode(&state)) {
2129 mutex_lock(&tpacpi_inputdev_send_mutex);
2131 input_report_switch(tpacpi_inputdev,
2132 SW_TABLET_MODE, !!state);
2133 input_sync(tpacpi_inputdev);
2135 mutex_unlock(&tpacpi_inputdev_send_mutex);
2139 static void tpacpi_input_send_key(unsigned int scancode)
2141 unsigned int keycode;
2143 keycode = hotkey_keycode_map[scancode];
2145 if (keycode != KEY_RESERVED) {
2146 mutex_lock(&tpacpi_inputdev_send_mutex);
2148 input_report_key(tpacpi_inputdev, keycode, 1);
2149 if (keycode == KEY_UNKNOWN)
2150 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
2152 input_sync(tpacpi_inputdev);
2154 input_report_key(tpacpi_inputdev, keycode, 0);
2155 if (keycode == KEY_UNKNOWN)
2156 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
2158 input_sync(tpacpi_inputdev);
2160 mutex_unlock(&tpacpi_inputdev_send_mutex);
2164 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2165 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
2167 static void tpacpi_hotkey_send_key(unsigned int scancode)
2169 tpacpi_input_send_key(scancode);
2170 if (hotkey_report_mode < 2) {
2171 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
2172 0x80, 0x1001 + scancode);
2176 static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
2180 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
2181 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
2182 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
2183 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
2184 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
2185 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
2187 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
2188 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
2189 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
2191 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
2192 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
2193 n->displayexp_toggle =
2194 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
2196 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
2197 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
2198 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
2199 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
2200 n->brightness_toggle =
2201 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
2203 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
2204 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
2205 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
2206 >> TP_NVRAM_POS_LEVEL_VOLUME;
2207 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
2208 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
2212 #define TPACPI_COMPARE_KEY(__scancode, __member) \
2214 if ((mask & (1 << __scancode)) && \
2215 oldn->__member != newn->__member) \
2216 tpacpi_hotkey_send_key(__scancode); \
2219 #define TPACPI_MAY_SEND_KEY(__scancode) \
2220 do { if (mask & (1 << __scancode)) \
2221 tpacpi_hotkey_send_key(__scancode); } while (0)
2223 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
2224 struct tp_nvram_state *newn,
2227 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
2228 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
2229 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
2230 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
2232 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
2234 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
2237 if (oldn->volume_toggle != newn->volume_toggle) {
2238 if (oldn->mute != newn->mute) {
2239 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2241 if (oldn->volume_level > newn->volume_level) {
2242 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2243 } else if (oldn->volume_level < newn->volume_level) {
2244 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2245 } else if (oldn->mute == newn->mute) {
2246 /* repeated key presses that didn't change state */
2248 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2249 } else if (newn->volume_level != 0) {
2250 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2252 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2257 /* handle brightness */
2258 if (oldn->brightness_toggle != newn->brightness_toggle) {
2259 if (oldn->brightness_level < newn->brightness_level) {
2260 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2261 } else if (oldn->brightness_level > newn->brightness_level) {
2262 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2264 /* repeated key presses that didn't change state */
2265 if (newn->brightness_level != 0) {
2266 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2268 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2274 #undef TPACPI_COMPARE_KEY
2275 #undef TPACPI_MAY_SEND_KEY
2277 static int hotkey_kthread(void *data)
2279 struct tp_nvram_state s[2];
2281 unsigned int si, so;
2283 unsigned int change_detector, must_reset;
2284 unsigned int poll_freq;
2286 mutex_lock(&hotkey_thread_mutex);
2288 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2297 /* Initial state for compares */
2298 mutex_lock(&hotkey_thread_data_mutex);
2299 change_detector = hotkey_config_change;
2300 mask = hotkey_source_mask & hotkey_mask;
2301 poll_freq = hotkey_poll_freq;
2302 mutex_unlock(&hotkey_thread_data_mutex);
2303 hotkey_read_nvram(&s[so], mask);
2305 while (!kthread_should_stop()) {
2307 if (likely(poll_freq))
2310 t = 100; /* should never happen... */
2312 t = msleep_interruptible(t);
2313 if (unlikely(kthread_should_stop()))
2315 must_reset = try_to_freeze();
2316 if (t > 0 && !must_reset)
2319 mutex_lock(&hotkey_thread_data_mutex);
2320 if (must_reset || hotkey_config_change != change_detector) {
2321 /* forget old state on thaw or config change */
2324 change_detector = hotkey_config_change;
2326 mask = hotkey_source_mask & hotkey_mask;
2327 poll_freq = hotkey_poll_freq;
2328 mutex_unlock(&hotkey_thread_data_mutex);
2331 hotkey_read_nvram(&s[si], mask);
2332 if (likely(si != so)) {
2333 hotkey_compare_and_issue_event(&s[so], &s[si],
2343 mutex_unlock(&hotkey_thread_mutex);
2347 /* call with hotkey_mutex held */
2348 static void hotkey_poll_stop_sync(void)
2350 if (tpacpi_hotkey_task) {
2351 if (frozen(tpacpi_hotkey_task) ||
2352 freezing(tpacpi_hotkey_task))
2353 thaw_process(tpacpi_hotkey_task);
2355 kthread_stop(tpacpi_hotkey_task);
2356 tpacpi_hotkey_task = NULL;
2357 mutex_lock(&hotkey_thread_mutex);
2358 /* at this point, the thread did exit */
2359 mutex_unlock(&hotkey_thread_mutex);
2363 /* call with hotkey_mutex held */
2364 static void hotkey_poll_setup(bool may_warn)
2366 u32 hotkeys_to_poll = hotkey_source_mask & hotkey_mask;
2368 if (hotkeys_to_poll != 0 && hotkey_poll_freq > 0 &&
2369 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
2370 if (!tpacpi_hotkey_task) {
2371 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
2372 NULL, TPACPI_NVRAM_KTHREAD_NAME);
2373 if (IS_ERR(tpacpi_hotkey_task)) {
2374 tpacpi_hotkey_task = NULL;
2376 "could not create kernel thread "
2377 "for hotkey polling\n");
2381 hotkey_poll_stop_sync();
2382 if (may_warn && hotkeys_to_poll != 0 &&
2383 hotkey_poll_freq == 0) {
2384 printk(TPACPI_NOTICE
2385 "hot keys 0x%08x require polling, "
2386 "which is currently disabled\n",
2392 static void hotkey_poll_setup_safe(bool may_warn)
2394 mutex_lock(&hotkey_mutex);
2395 hotkey_poll_setup(may_warn);
2396 mutex_unlock(&hotkey_mutex);
2399 /* call with hotkey_mutex held */
2400 static void hotkey_poll_set_freq(unsigned int freq)
2403 hotkey_poll_stop_sync();
2405 HOTKEY_CONFIG_CRITICAL_START
2406 hotkey_poll_freq = freq;
2407 HOTKEY_CONFIG_CRITICAL_END
2410 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2412 static void hotkey_poll_setup_safe(bool __unused)
2416 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2418 static int hotkey_inputdev_open(struct input_dev *dev)
2420 switch (tpacpi_lifecycle) {
2421 case TPACPI_LIFE_INIT:
2423 * hotkey_init will call hotkey_poll_setup_safe
2424 * at the appropriate moment
2427 case TPACPI_LIFE_EXITING:
2429 case TPACPI_LIFE_RUNNING:
2430 hotkey_poll_setup_safe(false);
2434 /* Should only happen if tpacpi_lifecycle is corrupt */
2439 static void hotkey_inputdev_close(struct input_dev *dev)
2441 /* disable hotkey polling when possible */
2442 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
2443 hotkey_poll_setup_safe(false);
2446 /* sysfs hotkey enable ------------------------------------------------- */
2447 static ssize_t hotkey_enable_show(struct device *dev,
2448 struct device_attribute *attr,
2453 printk_deprecated_attribute("hotkey_enable",
2454 "Hotkey reporting is always enabled");
2456 res = hotkey_status_get(&status);
2460 return snprintf(buf, PAGE_SIZE, "%d\n", status);
2463 static ssize_t hotkey_enable_store(struct device *dev,
2464 struct device_attribute *attr,
2465 const char *buf, size_t count)
2469 printk_deprecated_attribute("hotkey_enable",
2470 "Hotkeys can be disabled through hotkey_mask");
2472 if (parse_strtoul(buf, 1, &t))
2481 static struct device_attribute dev_attr_hotkey_enable =
2482 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
2483 hotkey_enable_show, hotkey_enable_store);
2485 /* sysfs hotkey mask --------------------------------------------------- */
2486 static ssize_t hotkey_mask_show(struct device *dev,
2487 struct device_attribute *attr,
2492 if (mutex_lock_killable(&hotkey_mutex))
2493 return -ERESTARTSYS;
2494 res = hotkey_mask_get();
2495 mutex_unlock(&hotkey_mutex);
2498 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
2501 static ssize_t hotkey_mask_store(struct device *dev,
2502 struct device_attribute *attr,
2503 const char *buf, size_t count)
2508 if (parse_strtoul(buf, 0xffffffffUL, &t))
2511 if (mutex_lock_killable(&hotkey_mutex))
2512 return -ERESTARTSYS;
2514 res = hotkey_mask_set(t);
2516 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2517 hotkey_poll_setup(true);
2520 mutex_unlock(&hotkey_mutex);
2522 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2524 return (res) ? res : count;
2527 static struct device_attribute dev_attr_hotkey_mask =
2528 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
2529 hotkey_mask_show, hotkey_mask_store);
2531 /* sysfs hotkey bios_enabled ------------------------------------------- */
2532 static ssize_t hotkey_bios_enabled_show(struct device *dev,
2533 struct device_attribute *attr,
2536 return sprintf(buf, "0\n");
2539 static struct device_attribute dev_attr_hotkey_bios_enabled =
2540 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
2542 /* sysfs hotkey bios_mask ---------------------------------------------- */
2543 static ssize_t hotkey_bios_mask_show(struct device *dev,
2544 struct device_attribute *attr,
2547 printk_deprecated_attribute("hotkey_bios_mask",
2548 "This attribute is useless.");
2549 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
2552 static struct device_attribute dev_attr_hotkey_bios_mask =
2553 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
2555 /* sysfs hotkey all_mask ----------------------------------------------- */
2556 static ssize_t hotkey_all_mask_show(struct device *dev,
2557 struct device_attribute *attr,
2560 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2561 hotkey_all_mask | hotkey_source_mask);
2564 static struct device_attribute dev_attr_hotkey_all_mask =
2565 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
2567 /* sysfs hotkey recommended_mask --------------------------------------- */
2568 static ssize_t hotkey_recommended_mask_show(struct device *dev,
2569 struct device_attribute *attr,
2572 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2573 (hotkey_all_mask | hotkey_source_mask)
2574 & ~hotkey_reserved_mask);
2577 static struct device_attribute dev_attr_hotkey_recommended_mask =
2578 __ATTR(hotkey_recommended_mask, S_IRUGO,
2579 hotkey_recommended_mask_show, NULL);
2581 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2583 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
2584 static ssize_t hotkey_source_mask_show(struct device *dev,
2585 struct device_attribute *attr,
2588 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2591 static ssize_t hotkey_source_mask_store(struct device *dev,
2592 struct device_attribute *attr,
2593 const char *buf, size_t count)
2597 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2598 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2601 if (mutex_lock_killable(&hotkey_mutex))
2602 return -ERESTARTSYS;
2604 HOTKEY_CONFIG_CRITICAL_START
2605 hotkey_source_mask = t;
2606 HOTKEY_CONFIG_CRITICAL_END
2608 hotkey_poll_setup(true);
2609 hotkey_mask_set(hotkey_mask);
2611 mutex_unlock(&hotkey_mutex);
2613 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2618 static struct device_attribute dev_attr_hotkey_source_mask =
2619 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2620 hotkey_source_mask_show, hotkey_source_mask_store);
2622 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2623 static ssize_t hotkey_poll_freq_show(struct device *dev,
2624 struct device_attribute *attr,
2627 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2630 static ssize_t hotkey_poll_freq_store(struct device *dev,
2631 struct device_attribute *attr,
2632 const char *buf, size_t count)
2636 if (parse_strtoul(buf, 25, &t))
2639 if (mutex_lock_killable(&hotkey_mutex))
2640 return -ERESTARTSYS;
2642 hotkey_poll_set_freq(t);
2643 hotkey_poll_setup(true);
2645 mutex_unlock(&hotkey_mutex);
2647 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2652 static struct device_attribute dev_attr_hotkey_poll_freq =
2653 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2654 hotkey_poll_freq_show, hotkey_poll_freq_store);
2656 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2658 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
2659 static ssize_t hotkey_radio_sw_show(struct device *dev,
2660 struct device_attribute *attr,
2664 res = hotkey_get_wlsw();
2668 /* Opportunistic update */
2669 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
2671 return snprintf(buf, PAGE_SIZE, "%d\n",
2672 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
2675 static struct device_attribute dev_attr_hotkey_radio_sw =
2676 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2678 static void hotkey_radio_sw_notify_change(void)
2680 if (tp_features.hotkey_wlsw)
2681 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2685 /* sysfs hotkey tablet mode (pollable) --------------------------------- */
2686 static ssize_t hotkey_tablet_mode_show(struct device *dev,
2687 struct device_attribute *attr,
2691 res = hotkey_get_tablet_mode(&s);
2695 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2698 static struct device_attribute dev_attr_hotkey_tablet_mode =
2699 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2701 static void hotkey_tablet_mode_notify_change(void)
2703 if (tp_features.hotkey_tablet)
2704 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2705 "hotkey_tablet_mode");
2708 /* sysfs hotkey report_mode -------------------------------------------- */
2709 static ssize_t hotkey_report_mode_show(struct device *dev,
2710 struct device_attribute *attr,
2713 return snprintf(buf, PAGE_SIZE, "%d\n",
2714 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
2717 static struct device_attribute dev_attr_hotkey_report_mode =
2718 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
2720 /* sysfs wakeup reason (pollable) -------------------------------------- */
2721 static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2722 struct device_attribute *attr,
2725 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2728 static struct device_attribute dev_attr_hotkey_wakeup_reason =
2729 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2731 static void hotkey_wakeup_reason_notify_change(void)
2733 if (tp_features.hotkey_mask)
2734 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2738 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
2739 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2740 struct device_attribute *attr,
2743 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2746 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2747 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2748 hotkey_wakeup_hotunplug_complete_show, NULL);
2750 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
2752 if (tp_features.hotkey_mask)
2753 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2754 "wakeup_hotunplug_complete");
2757 /* --------------------------------------------------------------------- */
2759 static struct attribute *hotkey_attributes[] __initdata = {
2760 &dev_attr_hotkey_enable.attr,
2761 &dev_attr_hotkey_bios_enabled.attr,
2762 &dev_attr_hotkey_report_mode.attr,
2763 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2764 &dev_attr_hotkey_mask.attr,
2765 &dev_attr_hotkey_all_mask.attr,
2766 &dev_attr_hotkey_recommended_mask.attr,
2767 &dev_attr_hotkey_source_mask.attr,
2768 &dev_attr_hotkey_poll_freq.attr,
2772 static struct attribute *hotkey_mask_attributes[] __initdata = {
2773 &dev_attr_hotkey_bios_mask.attr,
2774 #ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2775 &dev_attr_hotkey_mask.attr,
2776 &dev_attr_hotkey_all_mask.attr,
2777 &dev_attr_hotkey_recommended_mask.attr,
2779 &dev_attr_hotkey_wakeup_reason.attr,
2780 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
2784 * Sync both the hw and sw blocking state of all switches
2786 static void tpacpi_send_radiosw_update(void)
2791 * We must sync all rfkill controllers *before* issuing any
2792 * rfkill input events, or we will race the rfkill core input
2795 * tpacpi_inputdev_send_mutex works as a syncronization point
2798 * We optimize to avoid numerous calls to hotkey_get_wlsw.
2801 wlsw = hotkey_get_wlsw();
2803 /* Sync hw blocking state first if it is hw-blocked */
2804 if (wlsw == TPACPI_RFK_RADIO_OFF)
2805 tpacpi_rfk_update_hwblock_state(true);
2807 /* Sync sw blocking state */
2808 tpacpi_rfk_update_swstate_all();
2810 /* Sync hw blocking state last if it is hw-unblocked */
2811 if (wlsw == TPACPI_RFK_RADIO_ON)
2812 tpacpi_rfk_update_hwblock_state(false);
2814 /* Issue rfkill input event for WLSW switch */
2816 mutex_lock(&tpacpi_inputdev_send_mutex);
2818 input_report_switch(tpacpi_inputdev,
2819 SW_RFKILL_ALL, (wlsw > 0));
2820 input_sync(tpacpi_inputdev);
2822 mutex_unlock(&tpacpi_inputdev_send_mutex);
2826 * this can be unconditional, as we will poll state again
2827 * if userspace uses the notify to read data
2829 hotkey_radio_sw_notify_change();
2832 static void hotkey_exit(void)
2834 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2835 mutex_lock(&hotkey_mutex);
2836 hotkey_poll_stop_sync();
2837 mutex_unlock(&hotkey_mutex);
2840 if (hotkey_dev_attributes)
2841 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2843 kfree(hotkey_keycode_map);
2845 if (tp_features.hotkey) {
2846 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
2847 "restoring original hot key mask\n");
2848 /* no short-circuit boolean operator below! */
2849 if ((hotkey_mask_set(hotkey_orig_mask) |
2850 hotkey_status_set(false)) != 0)
2852 "failed to restore hot key mask "
2853 "to BIOS defaults\n");
2857 static int __init hotkey_init(struct ibm_init_struct *iibm)
2859 /* Requirements for changing the default keymaps:
2861 * 1. Many of the keys are mapped to KEY_RESERVED for very
2862 * good reasons. Do not change them unless you have deep
2863 * knowledge on the IBM and Lenovo ThinkPad firmware for
2864 * the various ThinkPad models. The driver behaves
2865 * differently for KEY_RESERVED: such keys have their
2866 * hot key mask *unset* in mask_recommended, and also
2867 * in the initial hot key mask programmed into the
2868 * firmware at driver load time, which means the firm-
2869 * ware may react very differently if you change them to
2872 * 2. You must be subscribed to the linux-thinkpad and
2873 * ibm-acpi-devel mailing lists, and you should read the
2874 * list archives since 2007 if you want to change the
2875 * keymaps. This requirement exists so that you will
2876 * know the past history of problems with the thinkpad-
2877 * acpi driver keymaps, and also that you will be
2878 * listening to any bug reports;
2880 * 3. Do not send thinkpad-acpi specific patches directly to
2881 * for merging, *ever*. Send them to the linux-acpi
2882 * mailinglist for comments. Merging is to be done only
2883 * through acpi-test and the ACPI maintainer.
2885 * If the above is too much to ask, don't change the keymap.
2886 * Ask the thinkpad-acpi maintainer to do it, instead.
2888 static u16 ibm_keycode_map[] __initdata = {
2889 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2890 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
2891 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2892 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
2894 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
2895 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2896 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2897 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
2899 /* brightness: firmware always reacts to them, unless
2900 * X.org did some tricks in the radeon BIOS scratch
2901 * registers of *some* models */
2902 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
2903 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
2905 /* Thinklight: firmware always react to it */
2906 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
2908 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2909 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
2911 /* Volume: firmware always react to it and reprograms
2912 * the built-in *extra* mixer. Never map it to control
2913 * another mixer by default. */
2914 KEY_RESERVED, /* 0x14: VOLUME UP */
2915 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2916 KEY_RESERVED, /* 0x16: MUTE */
2918 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2920 /* (assignments unknown, please report if found) */
2921 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2922 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2924 static u16 lenovo_keycode_map[] __initdata = {
2925 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2926 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2927 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2928 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
2930 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
2931 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2932 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2933 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
2935 /* These either have to go through ACPI video, or
2936 * act like in the IBM ThinkPads, so don't ever
2937 * enable them by default */
2938 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
2939 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
2941 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
2943 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2944 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
2946 /* Volume: z60/z61, T60 (BIOS version?): firmware always
2947 * react to it and reprograms the built-in *extra* mixer.
2948 * Never map it to control another mixer by default.
2950 * T60?, T61, R60?, R61: firmware and EC tries to send
2951 * these over the regular keyboard, so these are no-ops,
2952 * but there are still weird bugs re. MUTE, so do not
2953 * change unless you get test reports from all Lenovo
2954 * models. May cause the BIOS to interfere with the
2957 KEY_RESERVED, /* 0x14: VOLUME UP */
2958 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2959 KEY_RESERVED, /* 0x16: MUTE */
2961 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2963 /* (assignments unknown, please report if found) */
2964 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2965 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2968 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
2969 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
2970 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
2976 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2977 "initializing hotkey subdriver\n");
2979 BUG_ON(!tpacpi_inputdev);
2980 BUG_ON(tpacpi_inputdev->open != NULL ||
2981 tpacpi_inputdev->close != NULL);
2983 TPACPI_ACPIHANDLE_INIT(hkey);
2984 mutex_init(&hotkey_mutex);
2986 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2987 mutex_init(&hotkey_thread_mutex);
2988 mutex_init(&hotkey_thread_data_mutex);
2991 /* hotkey not supported on 570 */
2992 tp_features.hotkey = hkey_handle != NULL;
2994 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2996 str_supported(tp_features.hotkey));
2998 if (!tp_features.hotkey)
3001 tpacpi_disable_brightness_delay();
3003 hotkey_dev_attributes = create_attr_set(13, NULL);
3004 if (!hotkey_dev_attributes)
3006 res = add_many_to_attr_set(hotkey_dev_attributes,
3008 ARRAY_SIZE(hotkey_attributes));
3012 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3013 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3014 for HKEY interface version 0x100 */
3015 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
3016 if ((hkeyv >> 8) != 1) {
3017 printk(TPACPI_ERR "unknown version of the "
3018 "HKEY interface: 0x%x\n", hkeyv);
3019 printk(TPACPI_ERR "please report this to %s\n",
3023 * MHKV 0x100 in A31, R40, R40e,
3024 * T4x, X31, and later
3026 tp_features.hotkey_mask = 1;
3027 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3028 "firmware HKEY interface version: 0x%x\n",
3033 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3034 "hotkey masks are %s\n",
3035 str_supported(tp_features.hotkey_mask));
3037 if (tp_features.hotkey_mask) {
3038 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3041 "missing MHKA handler, "
3042 "please report this to %s\n",
3044 /* FN+F12, FN+F4, FN+F3 */
3045 hotkey_all_mask = 0x080cU;
3049 /* hotkey_source_mask *must* be zero for
3050 * the first hotkey_mask_get */
3051 if (tp_features.hotkey_mask) {
3052 res = hotkey_mask_get();
3056 hotkey_orig_mask = hotkey_mask;
3057 res = add_many_to_attr_set(
3058 hotkey_dev_attributes,
3059 hotkey_mask_attributes,
3060 ARRAY_SIZE(hotkey_mask_attributes));
3065 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3066 if (tp_features.hotkey_mask) {
3067 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
3070 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
3073 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3074 "hotkey source mask 0x%08x, polling freq %u\n",
3075 hotkey_source_mask, hotkey_poll_freq);
3078 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3080 tp_features.hotkey_wlsw = 1;
3082 "radio switch emulation enabled\n");
3085 /* Not all thinkpads have a hardware radio switch */
3086 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
3087 tp_features.hotkey_wlsw = 1;
3089 "radio switch found; radios are %s\n",
3090 enabled(status, 0));
3092 if (tp_features.hotkey_wlsw)
3093 res = add_to_attr_set(hotkey_dev_attributes,
3094 &dev_attr_hotkey_radio_sw.attr);
3096 /* For X41t, X60t, X61t Tablets... */
3097 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
3098 tp_features.hotkey_tablet = 1;
3100 "possible tablet mode switch found; "
3101 "ThinkPad in %s mode\n",
3102 (status & TP_HOTKEY_TABLET_MASK)?
3103 "tablet" : "laptop");
3104 res = add_to_attr_set(hotkey_dev_attributes,
3105 &dev_attr_hotkey_tablet_mode.attr);
3109 res = register_attr_set_with_sysfs(
3110 hotkey_dev_attributes,
3111 &tpacpi_pdev->dev.kobj);
3115 /* Set up key map */
3117 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
3119 if (!hotkey_keycode_map) {
3121 "failed to allocate memory for key map\n");
3126 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
3127 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3128 "using Lenovo default hot key map\n");
3129 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
3130 TPACPI_HOTKEY_MAP_SIZE);
3132 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3133 "using IBM default hot key map\n");
3134 memcpy(hotkey_keycode_map, &ibm_keycode_map,
3135 TPACPI_HOTKEY_MAP_SIZE);
3138 set_bit(EV_KEY, tpacpi_inputdev->evbit);
3139 set_bit(EV_MSC, tpacpi_inputdev->evbit);
3140 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
3141 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
3142 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
3143 tpacpi_inputdev->keycode = hotkey_keycode_map;
3144 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
3145 if (hotkey_keycode_map[i] != KEY_RESERVED) {
3146 set_bit(hotkey_keycode_map[i],
3147 tpacpi_inputdev->keybit);
3149 if (i < sizeof(hotkey_reserved_mask)*8)
3150 hotkey_reserved_mask |= 1 << i;
3154 if (tp_features.hotkey_wlsw) {
3155 set_bit(EV_SW, tpacpi_inputdev->evbit);
3156 set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit);
3158 if (tp_features.hotkey_tablet) {
3159 set_bit(EV_SW, tpacpi_inputdev->evbit);
3160 set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit);
3163 /* Do not issue duplicate brightness change events to
3165 if (!tp_features.bright_acpimode)
3166 /* update bright_acpimode... */
3167 tpacpi_check_std_acpi_brightness_support();
3169 if (tp_features.bright_acpimode && acpi_video_backlight_support()) {
3171 "This ThinkPad has standard ACPI backlight "
3172 "brightness control, supported by the ACPI "
3174 printk(TPACPI_NOTICE
3175 "Disabling thinkpad-acpi brightness events "
3178 /* The hotkey_reserved_mask change below is not
3179 * necessary while the keys are at KEY_RESERVED in the
3180 * default map, but better safe than sorry, leave it
3181 * here as a marker of what we have to do, especially
3182 * when we finally become able to set this at runtime
3183 * on response to X.org requests */
3184 hotkey_reserved_mask |=
3185 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
3186 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
3189 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3190 "enabling firmware HKEY event interface...\n");
3191 res = hotkey_status_set(true);
3196 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
3197 & ~hotkey_reserved_mask)
3198 | hotkey_orig_mask);
3199 if (res < 0 && res != -ENXIO) {
3204 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3205 "legacy ibm/hotkey event reporting over procfs %s\n",
3206 (hotkey_report_mode < 2) ?
3207 "enabled" : "disabled");
3209 tpacpi_inputdev->open = &hotkey_inputdev_open;
3210 tpacpi_inputdev->close = &hotkey_inputdev_close;
3212 hotkey_poll_setup_safe(true);
3213 tpacpi_send_radiosw_update();
3214 tpacpi_input_send_tabletsw();
3219 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3220 hotkey_dev_attributes = NULL;
3222 return (res < 0)? res : 1;
3225 static bool hotkey_notify_hotkey(const u32 hkey,
3227 bool *ignore_acpi_ev)
3229 /* 0x1000-0x1FFF: key presses */
3230 unsigned int scancode = hkey & 0xfff;
3231 *send_acpi_ev = true;
3232 *ignore_acpi_ev = false;
3234 if (scancode > 0 && scancode < 0x21) {
3236 if (!(hotkey_source_mask & (1 << scancode))) {
3237 tpacpi_input_send_key(scancode);
3238 *send_acpi_ev = false;
3240 *ignore_acpi_ev = true;
3247 static bool hotkey_notify_wakeup(const u32 hkey,
3249 bool *ignore_acpi_ev)
3251 /* 0x2000-0x2FFF: Wakeup reason */
3252 *send_acpi_ev = true;
3253 *ignore_acpi_ev = false;
3256 case 0x2304: /* suspend, undock */
3257 case 0x2404: /* hibernation, undock */
3258 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3259 *ignore_acpi_ev = true;
3262 case 0x2305: /* suspend, bay eject */
3263 case 0x2405: /* hibernation, bay eject */
3264 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3265 *ignore_acpi_ev = true;
3268 case 0x2313: /* Battery on critical low level (S3) */
3269 case 0x2413: /* Battery on critical low level (S4) */
3271 "EMERGENCY WAKEUP: battery almost empty\n");
3272 /* how to auto-heal: */
3273 /* 2313: woke up from S3, go to S4/S5 */
3274 /* 2413: woke up from S4, go to S5 */
3281 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
3283 "woke up due to a hot-unplug "
3285 hotkey_wakeup_reason_notify_change();
3290 static bool hotkey_notify_usrevent(const u32 hkey,
3292 bool *ignore_acpi_ev)
3294 /* 0x5000-0x5FFF: human interface helpers */
3295 *send_acpi_ev = true;
3296 *ignore_acpi_ev = false;
3299 case 0x5010: /* Lenovo new BIOS: brightness changed */
3300 case 0x500b: /* X61t: tablet pen inserted into bay */
3301 case 0x500c: /* X61t: tablet pen removed from bay */
3304 case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
3305 case 0x500a: /* X41t-X61t: swivel down (normal mode) */
3306 tpacpi_input_send_tabletsw();
3307 hotkey_tablet_mode_notify_change();
3308 *send_acpi_ev = false;
3313 /* LID switch events. Do not propagate */
3314 *ignore_acpi_ev = true;
3322 static bool hotkey_notify_thermal(const u32 hkey,
3324 bool *ignore_acpi_ev)
3326 /* 0x6000-0x6FFF: thermal alarms */
3327 *send_acpi_ev = true;
3328 *ignore_acpi_ev = false;
3333 "THERMAL ALARM: battery is too hot!\n");
3334 /* recommended action: warn user through gui */
3338 "THERMAL EMERGENCY: battery is extremely hot!\n");
3339 /* recommended action: immediate sleep/hibernate */
3344 "a sensor reports something is too hot!\n");
3345 /* recommended action: warn user through gui, that */
3346 /* some internal component is too hot */
3350 "THERMAL EMERGENCY: "
3351 "a sensor reports something is extremely hot!\n");
3352 /* recommended action: immediate sleep/hibernate */
3356 "EC reports that Thermal Table has changed\n");
3357 /* recommended action: do nothing, we don't have
3358 * Lenovo ATM information */
3362 "THERMAL ALERT: unknown thermal alarm received\n");
3367 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
3371 bool ignore_acpi_ev;
3374 if (event != 0x80) {
3376 "unknown HKEY notification event %d\n", event);
3377 /* forward it to userspace, maybe it knows how to handle it */
3378 acpi_bus_generate_netlink_event(
3379 ibm->acpi->device->pnp.device_class,
3380 dev_name(&ibm->acpi->device->dev),
3386 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
3387 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
3396 send_acpi_ev = true;
3397 ignore_acpi_ev = false;
3399 switch (hkey >> 12) {
3401 /* 0x1000-0x1FFF: key presses */
3402 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
3406 /* 0x2000-0x2FFF: Wakeup reason */
3407 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
3411 /* 0x3000-0x3FFF: bay-related wakeups */
3412 if (hkey == 0x3003) {
3413 hotkey_autosleep_ack = 1;
3416 hotkey_wakeup_hotunplug_complete_notify_change();
3423 /* 0x4000-0x4FFF: dock-related wakeups */
3424 if (hkey == 0x4003) {
3425 hotkey_autosleep_ack = 1;
3428 hotkey_wakeup_hotunplug_complete_notify_change();
3435 /* 0x5000-0x5FFF: human interface helpers */
3436 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
3440 /* 0x6000-0x6FFF: thermal alarms */
3441 known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev,
3445 /* 0x7000-0x7FFF: misc */
3446 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
3447 tpacpi_send_radiosw_update();
3452 /* fallthrough to default */
3457 printk(TPACPI_NOTICE
3458 "unhandled HKEY event 0x%04x\n", hkey);
3459 printk(TPACPI_NOTICE
3460 "please report the conditions when this "
3461 "event happened to %s\n", TPACPI_MAIL);
3465 if (!ignore_acpi_ev &&
3466 (send_acpi_ev || hotkey_report_mode < 2)) {
3467 acpi_bus_generate_proc_event(ibm->acpi->device,
3471 /* netlink events */
3472 if (!ignore_acpi_ev && send_acpi_ev) {
3473 acpi_bus_generate_netlink_event(
3474 ibm->acpi->device->pnp.device_class,
3475 dev_name(&ibm->acpi->device->dev),
3481 static void hotkey_suspend(pm_message_t state)
3483 /* Do these on suspend, we get the events on early resume! */
3484 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
3485 hotkey_autosleep_ack = 0;
3488 static void hotkey_resume(void)
3490 tpacpi_disable_brightness_delay();
3492 if (hotkey_mask_get())
3494 "error while trying to read hot key mask "
3496 tpacpi_send_radiosw_update();
3497 hotkey_tablet_mode_notify_change();
3498 hotkey_wakeup_reason_notify_change();
3499 hotkey_wakeup_hotunplug_complete_notify_change();
3500 hotkey_poll_setup_safe(false);
3503 /* procfs -------------------------------------------------------------- */
3504 static int hotkey_read(char *p)
3509 if (!tp_features.hotkey) {
3510 len += sprintf(p + len, "status:\t\tnot supported\n");
3514 if (mutex_lock_killable(&hotkey_mutex))
3515 return -ERESTARTSYS;
3516 res = hotkey_status_get(&status);
3518 res = hotkey_mask_get();
3519 mutex_unlock(&hotkey_mutex);
3523 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
3524 if (tp_features.hotkey_mask) {
3525 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
3526 len += sprintf(p + len,
3527 "commands:\tenable, disable, reset, <mask>\n");
3529 len += sprintf(p + len, "mask:\t\tnot supported\n");
3530 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
3536 static void hotkey_enabledisable_warn(bool enable)
3538 tpacpi_log_usertask("procfs hotkey enable/disable");
3539 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
3541 "hotkey enable/disable functionality has been "
3542 "removed from the driver. Hotkeys are always "
3545 "Please remove the hotkey=enable module "
3546 "parameter, it is deprecated. Hotkeys are always "
3550 static int hotkey_write(char *buf)
3556 if (!tp_features.hotkey)
3559 if (mutex_lock_killable(&hotkey_mutex))
3560 return -ERESTARTSYS;
3565 while ((cmd = next_cmd(&buf))) {
3566 if (strlencmp(cmd, "enable") == 0) {
3567 hotkey_enabledisable_warn(1);
3568 } else if (strlencmp(cmd, "disable") == 0) {
3569 hotkey_enabledisable_warn(0);
3571 } else if (strlencmp(cmd, "reset") == 0) {
3572 mask = (hotkey_all_mask | hotkey_source_mask)
3573 & ~hotkey_reserved_mask;
3574 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
3576 } else if (sscanf(cmd, "%x", &mask) == 1) {
3585 tpacpi_disclose_usertask("procfs hotkey",
3586 "set mask to 0x%08x\n", mask);
3588 if (!res && mask != hotkey_mask)
3589 res = hotkey_mask_set(mask);
3592 mutex_unlock(&hotkey_mutex);
3596 static const struct acpi_device_id ibm_htk_device_ids[] = {
3597 {TPACPI_ACPI_HKEY_HID, 0},
3601 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
3602 .hid = ibm_htk_device_ids,
3603 .notify = hotkey_notify,
3604 .handle = &hkey_handle,
3605 .type = ACPI_DEVICE_NOTIFY,
3608 static struct ibm_struct hotkey_driver_data = {
3610 .read = hotkey_read,
3611 .write = hotkey_write,
3612 .exit = hotkey_exit,
3613 .resume = hotkey_resume,
3614 .suspend = hotkey_suspend,
3615 .acpi = &ibm_hotkey_acpidriver,
3618 /*************************************************************************
3619 * Bluetooth subdriver
3623 /* ACPI GBDC/SBDC bits */
3624 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
3625 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
3626 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
3631 /* ACPI \BLTH commands */
3632 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
3633 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
3634 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
3635 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
3636 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
3639 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3641 static void bluetooth_suspend(pm_message_t state)
3643 /* Try to make sure radio will resume powered off */
3644 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3645 TP_ACPI_BLTH_PWR_OFF_ON_RESUME))
3646 vdbg_printk(TPACPI_DBG_RFKILL,
3647 "bluetooth power down on resume request failed\n");
3650 static int bluetooth_get_status(void)
3654 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3655 if (dbg_bluetoothemul)
3656 return (tpacpi_bluetooth_emulstate) ?
3657 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
3660 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
3663 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
3664 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
3667 static int bluetooth_set_status(enum tpacpi_rfkill_state state)
3671 vdbg_printk(TPACPI_DBG_RFKILL,
3672 "will attempt to %s bluetooth\n",
3673 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
3675 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3676 if (dbg_bluetoothemul) {
3677 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
3682 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
3683 if (state == TPACPI_RFK_RADIO_ON)
3684 status = TP_ACPI_BLUETOOTH_RADIOSSW;
3688 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
3694 /* sysfs bluetooth enable ---------------------------------------------- */
3695 static ssize_t bluetooth_enable_show(struct device *dev,
3696 struct device_attribute *attr,
3699 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
3703 static ssize_t bluetooth_enable_store(struct device *dev,
3704 struct device_attribute *attr,
3705 const char *buf, size_t count)
3707 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
3711 static struct device_attribute dev_attr_bluetooth_enable =
3712 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
3713 bluetooth_enable_show, bluetooth_enable_store);
3715 /* --------------------------------------------------------------------- */
3717 static struct attribute *bluetooth_attributes[] = {
3718 &dev_attr_bluetooth_enable.attr,
3722 static const struct attribute_group bluetooth_attr_group = {
3723 .attrs = bluetooth_attributes,
3726 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
3727 .get_status = bluetooth_get_status,
3728 .set_status = bluetooth_set_status,
3731 static void bluetooth_shutdown(void)
3733 /* Order firmware to save current state to NVRAM */
3734 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3735 TP_ACPI_BLTH_SAVE_STATE))
3736 printk(TPACPI_NOTICE
3737 "failed to save bluetooth state to NVRAM\n");
3739 vdbg_printk(TPACPI_DBG_RFKILL,
3740 "bluestooth state saved to NVRAM\n");
3743 static void bluetooth_exit(void)
3745 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3746 &bluetooth_attr_group);
3748 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
3750 bluetooth_shutdown();
3753 static int __init bluetooth_init(struct ibm_init_struct *iibm)
3758 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3759 "initializing bluetooth subdriver\n");
3761 TPACPI_ACPIHANDLE_INIT(hkey);
3763 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3764 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
3765 tp_features.bluetooth = hkey_handle &&
3766 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
3768 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3769 "bluetooth is %s, status 0x%02x\n",
3770 str_supported(tp_features.bluetooth),
3773 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3774 if (dbg_bluetoothemul) {
3775 tp_features.bluetooth = 1;
3777 "bluetooth switch emulation enabled\n");
3780 if (tp_features.bluetooth &&
3781 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
3782 /* no bluetooth hardware present in system */
3783 tp_features.bluetooth = 0;
3784 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3785 "bluetooth hardware not installed\n");
3788 if (!tp_features.bluetooth)
3791 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
3792 &bluetooth_tprfk_ops,
3793 RFKILL_TYPE_BLUETOOTH,
3794 TPACPI_RFK_BLUETOOTH_SW_NAME,
3799 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3800 &bluetooth_attr_group);
3802 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
3809 /* procfs -------------------------------------------------------------- */
3810 static int bluetooth_read(char *p)
3812 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, p);
3815 static int bluetooth_write(char *buf)
3817 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
3820 static struct ibm_struct bluetooth_driver_data = {
3821 .name = "bluetooth",
3822 .read = bluetooth_read,
3823 .write = bluetooth_write,
3824 .exit = bluetooth_exit,
3825 .suspend = bluetooth_suspend,
3826 .shutdown = bluetooth_shutdown,
3829 /*************************************************************************
3834 /* ACPI GWAN/SWAN bits */
3835 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
3836 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
3837 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
3841 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
3843 static void wan_suspend(pm_message_t state)
3845 /* Try to make sure radio will resume powered off */
3846 if (!acpi_evalf(NULL, NULL, "\\WGSV", "qvd",
3847 TP_ACPI_WGSV_PWR_OFF_ON_RESUME))
3848 vdbg_printk(TPACPI_DBG_RFKILL,
3849 "WWAN power down on resume request failed\n");
3852 static int wan_get_status(void)
3856 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3858 return (tpacpi_wwan_emulstate) ?
3859 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
3862 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
3865 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
3866 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
3869 static int wan_set_status(enum tpacpi_rfkill_state state)
3873 vdbg_printk(TPACPI_DBG_RFKILL,
3874 "will attempt to %s wwan\n",
3875 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
3877 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3879 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
3884 /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
3885 if (state == TPACPI_RFK_RADIO_ON)
3886 status = TP_ACPI_WANCARD_RADIOSSW;
3890 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
3896 /* sysfs wan enable ---------------------------------------------------- */
3897 static ssize_t wan_enable_show(struct device *dev,
3898 struct device_attribute *attr,
3901 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
3905 static ssize_t wan_enable_store(struct device *dev,
3906 struct device_attribute *attr,
3907 const char *buf, size_t count)
3909 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
3913 static struct device_attribute dev_attr_wan_enable =
3914 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
3915 wan_enable_show, wan_enable_store);
3917 /* --------------------------------------------------------------------- */
3919 static struct attribute *wan_attributes[] = {
3920 &dev_attr_wan_enable.attr,
3924 static const struct attribute_group wan_attr_group = {
3925 .attrs = wan_attributes,
3928 static const struct tpacpi_rfk_ops wan_tprfk_ops = {
3929 .get_status = wan_get_status,
3930 .set_status = wan_set_status,
3933 static void wan_shutdown(void)
3935 /* Order firmware to save current state to NVRAM */
3936 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
3937 TP_ACPI_WGSV_SAVE_STATE))
3938 printk(TPACPI_NOTICE
3939 "failed to save WWAN state to NVRAM\n");
3941 vdbg_printk(TPACPI_DBG_RFKILL,
3942 "WWAN state saved to NVRAM\n");
3945 static void wan_exit(void)
3947 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3950 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
3955 static int __init wan_init(struct ibm_init_struct *iibm)
3960 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3961 "initializing wan subdriver\n");
3963 TPACPI_ACPIHANDLE_INIT(hkey);
3965 tp_features.wan = hkey_handle &&
3966 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
3968 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3969 "wan is %s, status 0x%02x\n",
3970 str_supported(tp_features.wan),
3973 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3975 tp_features.wan = 1;
3977 "wwan switch emulation enabled\n");
3980 if (tp_features.wan &&
3981 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
3982 /* no wan hardware present in system */
3983 tp_features.wan = 0;
3984 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3985 "wan hardware not installed\n");
3988 if (!tp_features.wan)
3991 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
3994 TPACPI_RFK_WWAN_SW_NAME,
3999 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4003 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
4010 /* procfs -------------------------------------------------------------- */
4011 static int wan_read(char *p)
4013 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, p);
4016 static int wan_write(char *buf)
4018 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
4021 static struct ibm_struct wan_driver_data = {
4026 .suspend = wan_suspend,
4027 .shutdown = wan_shutdown,
4030 /*************************************************************************
4035 /* ACPI GUWB/SUWB bits */
4036 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
4037 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
4040 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4042 static int uwb_get_status(void)
4046 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4048 return (tpacpi_uwb_emulstate) ?
4049 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
4052 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
4055 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
4056 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
4059 static int uwb_set_status(enum tpacpi_rfkill_state state)
4063 vdbg_printk(TPACPI_DBG_RFKILL,
4064 "will attempt to %s UWB\n",
4065 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
4067 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4069 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
4074 if (state == TPACPI_RFK_RADIO_ON)
4075 status = TP_ACPI_UWB_RADIOSSW;
4079 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
4085 /* --------------------------------------------------------------------- */
4087 static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
4088 .get_status = uwb_get_status,
4089 .set_status = uwb_set_status,
4092 static void uwb_exit(void)
4094 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
4097 static int __init uwb_init(struct ibm_init_struct *iibm)
4102 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4103 "initializing uwb subdriver\n");
4105 TPACPI_ACPIHANDLE_INIT(hkey);
4107 tp_features.uwb = hkey_handle &&
4108 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
4110 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4111 "uwb is %s, status 0x%02x\n",
4112 str_supported(tp_features.uwb),
4115 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4117 tp_features.uwb = 1;
4119 "uwb switch emulation enabled\n");
4122 if (tp_features.uwb &&
4123 !(status & TP_ACPI_UWB_HWPRESENT)) {
4124 /* no uwb hardware present in system */
4125 tp_features.uwb = 0;
4126 dbg_printk(TPACPI_DBG_INIT,
4127 "uwb hardware not installed\n");
4130 if (!tp_features.uwb)
4133 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
4136 TPACPI_RFK_UWB_SW_NAME,
4141 static struct ibm_struct uwb_driver_data = {
4144 .flags.experimental = 1,
4147 /*************************************************************************
4151 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
4153 enum video_access_mode {
4154 TPACPI_VIDEO_NONE = 0,
4155 TPACPI_VIDEO_570, /* 570 */
4156 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
4157 TPACPI_VIDEO_NEW, /* all others */
4160 enum { /* video status flags, based on VIDEO_570 */
4161 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
4162 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
4163 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
4166 enum { /* TPACPI_VIDEO_570 constants */
4167 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
4168 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
4169 * video_status_flags */
4170 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
4171 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
4174 static enum video_access_mode video_supported;
4175 static int video_orig_autosw;
4177 static int video_autosw_get(void);
4178 static int video_autosw_set(int enable);
4180 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
4182 static int __init video_init(struct ibm_init_struct *iibm)
4186 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
4188 TPACPI_ACPIHANDLE_INIT(vid);
4189 TPACPI_ACPIHANDLE_INIT(vid2);
4191 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
4192 /* G41, assume IVGA doesn't change */
4193 vid_handle = vid2_handle;
4196 /* video switching not supported on R30, R31 */
4197 video_supported = TPACPI_VIDEO_NONE;
4198 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
4200 video_supported = TPACPI_VIDEO_570;
4201 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
4202 /* 600e/x, 770e, 770x */
4203 video_supported = TPACPI_VIDEO_770;
4206 video_supported = TPACPI_VIDEO_NEW;
4208 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
4209 str_supported(video_supported != TPACPI_VIDEO_NONE),
4212 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
4215 static void video_exit(void)
4217 dbg_printk(TPACPI_DBG_EXIT,
4218 "restoring original video autoswitch mode\n");
4219 if (video_autosw_set(video_orig_autosw))
4220 printk(TPACPI_ERR "error while trying to restore original "
4221 "video autoswitch mode\n");
4224 static int video_outputsw_get(void)
4229 switch (video_supported) {
4230 case TPACPI_VIDEO_570:
4231 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
4232 TP_ACPI_VIDEO_570_PHSCMD))
4234 status = i & TP_ACPI_VIDEO_570_PHSMASK;
4236 case TPACPI_VIDEO_770:
4237 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
4240 status |= TP_ACPI_VIDEO_S_LCD;
4241 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
4244 status |= TP_ACPI_VIDEO_S_CRT;
4246 case TPACPI_VIDEO_NEW:
4247 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
4248 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
4251 status |= TP_ACPI_VIDEO_S_CRT;
4253 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
4254 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
4257 status |= TP_ACPI_VIDEO_S_LCD;
4258 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
4261 status |= TP_ACPI_VIDEO_S_DVI;
4270 static int video_outputsw_set(int status)
4275 switch (video_supported) {
4276 case TPACPI_VIDEO_570:
4277 res = acpi_evalf(NULL, NULL,
4278 "\\_SB.PHS2", "vdd",
4279 TP_ACPI_VIDEO_570_PHS2CMD,
4280 status | TP_ACPI_VIDEO_570_PHS2SET);
4282 case TPACPI_VIDEO_770:
4283 autosw = video_autosw_get();
4287 res = video_autosw_set(1);
4290 res = acpi_evalf(vid_handle, NULL,
4291 "ASWT", "vdd", status * 0x100, 0);
4292 if (!autosw && video_autosw_set(autosw)) {
4294 "video auto-switch left enabled due to error\n");
4298 case TPACPI_VIDEO_NEW:
4299 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
4300 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
4306 return (res)? 0 : -EIO;
4309 static int video_autosw_get(void)
4313 switch (video_supported) {
4314 case TPACPI_VIDEO_570:
4315 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
4318 case TPACPI_VIDEO_770:
4319 case TPACPI_VIDEO_NEW:
4320 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
4330 static int video_autosw_set(int enable)
4332 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
4337 static int video_outputsw_cycle(void)
4339 int autosw = video_autosw_get();
4345 switch (video_supported) {
4346 case TPACPI_VIDEO_570:
4347 res = video_autosw_set(1);
4350 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
4352 case TPACPI_VIDEO_770:
4353 case TPACPI_VIDEO_NEW:
4354 res = video_autosw_set(1);
4357 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
4362 if (!autosw && video_autosw_set(autosw)) {
4364 "video auto-switch left enabled due to error\n");
4368 return (res)? 0 : -EIO;
4371 static int video_expand_toggle(void)
4373 switch (video_supported) {
4374 case TPACPI_VIDEO_570:
4375 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
4377 case TPACPI_VIDEO_770:
4378 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
4380 case TPACPI_VIDEO_NEW:
4381 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
4389 static int video_read(char *p)
4394 if (video_supported == TPACPI_VIDEO_NONE) {
4395 len += sprintf(p + len, "status:\t\tnot supported\n");
4399 status = video_outputsw_get();
4403 autosw = video_autosw_get();
4407 len += sprintf(p + len, "status:\t\tsupported\n");
4408 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
4409 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
4410 if (video_supported == TPACPI_VIDEO_NEW)
4411 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
4412 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
4413 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
4414 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
4415 if (video_supported == TPACPI_VIDEO_NEW)
4416 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
4417 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
4418 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
4423 static int video_write(char *buf)
4426 int enable, disable, status;
4429 if (video_supported == TPACPI_VIDEO_NONE)
4435 while ((cmd = next_cmd(&buf))) {
4436 if (strlencmp(cmd, "lcd_enable") == 0) {
4437 enable |= TP_ACPI_VIDEO_S_LCD;
4438 } else if (strlencmp(cmd, "lcd_disable") == 0) {
4439 disable |= TP_ACPI_VIDEO_S_LCD;
4440 } else if (strlencmp(cmd, "crt_enable") == 0) {
4441 enable |= TP_ACPI_VIDEO_S_CRT;
4442 } else if (strlencmp(cmd, "crt_disable") == 0) {
4443 disable |= TP_ACPI_VIDEO_S_CRT;
4444 } else if (video_supported == TPACPI_VIDEO_NEW &&
4445 strlencmp(cmd, "dvi_enable") == 0) {
4446 enable |= TP_ACPI_VIDEO_S_DVI;
4447 } else if (video_supported == TPACPI_VIDEO_NEW &&
4448 strlencmp(cmd, "dvi_disable") == 0) {
4449 disable |= TP_ACPI_VIDEO_S_DVI;
4450 } else if (strlencmp(cmd, "auto_enable") == 0) {
4451 res = video_autosw_set(1);
4454 } else if (strlencmp(cmd, "auto_disable") == 0) {
4455 res = video_autosw_set(0);
4458 } else if (strlencmp(cmd, "video_switch") == 0) {
4459 res = video_outputsw_cycle();
4462 } else if (strlencmp(cmd, "expand_toggle") == 0) {
4463 res = video_expand_toggle();
4470 if (enable || disable) {
4471 status = video_outputsw_get();
4474 res = video_outputsw_set((status & ~disable) | enable);
4482 static struct ibm_struct video_driver_data = {
4485 .write = video_write,
4489 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4491 /*************************************************************************
4492 * Light (thinklight) subdriver
4495 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4496 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
4498 static int light_get_status(void)
4502 if (tp_features.light_status) {
4503 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4511 static int light_set_status(int status)
4515 if (tp_features.light) {
4517 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
4519 TP_CMOS_THINKLIGHT_ON :
4520 TP_CMOS_THINKLIGHT_OFF);
4522 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
4525 return (rc)? 0 : -EIO;
4531 static void light_set_status_worker(struct work_struct *work)
4533 struct tpacpi_led_classdev *data =
4534 container_of(work, struct tpacpi_led_classdev, work);
4536 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4537 light_set_status((data->new_state != TPACPI_LED_OFF));
4540 static void light_sysfs_set(struct led_classdev *led_cdev,
4541 enum led_brightness brightness)
4543 struct tpacpi_led_classdev *data =
4544 container_of(led_cdev,
4545 struct tpacpi_led_classdev,
4547 data->new_state = (brightness != LED_OFF) ?
4548 TPACPI_LED_ON : TPACPI_LED_OFF;
4549 queue_work(tpacpi_wq, &data->work);
4552 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4554 return (light_get_status() == 1)? LED_FULL : LED_OFF;
4557 static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4559 .name = "tpacpi::thinklight",
4560 .brightness_set = &light_sysfs_set,
4561 .brightness_get = &light_sysfs_get,
4565 static int __init light_init(struct ibm_init_struct *iibm)
4569 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4571 TPACPI_ACPIHANDLE_INIT(ledb);
4572 TPACPI_ACPIHANDLE_INIT(lght);
4573 TPACPI_ACPIHANDLE_INIT(cmos);
4574 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
4576 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
4577 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
4579 if (tp_features.light)
4580 /* light status not supported on
4581 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
4582 tp_features.light_status =
4583 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
4585 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4586 str_supported(tp_features.light),
4587 str_supported(tp_features.light_status));
4589 if (!tp_features.light)
4592 rc = led_classdev_register(&tpacpi_pdev->dev,
4593 &tpacpi_led_thinklight.led_classdev);
4596 tp_features.light = 0;
4597 tp_features.light_status = 0;
4605 static void light_exit(void)
4607 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
4608 if (work_pending(&tpacpi_led_thinklight.work))
4609 flush_workqueue(tpacpi_wq);
4612 static int light_read(char *p)
4617 if (!tp_features.light) {
4618 len += sprintf(p + len, "status:\t\tnot supported\n");
4619 } else if (!tp_features.light_status) {
4620 len += sprintf(p + len, "status:\t\tunknown\n");
4621 len += sprintf(p + len, "commands:\ton, off\n");
4623 status = light_get_status();
4626 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
4627 len += sprintf(p + len, "commands:\ton, off\n");
4633 static int light_write(char *buf)
4638 if (!tp_features.light)
4641 while ((cmd = next_cmd(&buf))) {
4642 if (strlencmp(cmd, "on") == 0) {
4644 } else if (strlencmp(cmd, "off") == 0) {
4650 return light_set_status(newstatus);
4653 static struct ibm_struct light_driver_data = {
4656 .write = light_write,
4660 /*************************************************************************
4664 /* sysfs cmos_command -------------------------------------------------- */
4665 static ssize_t cmos_command_store(struct device *dev,
4666 struct device_attribute *attr,
4667 const char *buf, size_t count)
4669 unsigned long cmos_cmd;
4672 if (parse_strtoul(buf, 21, &cmos_cmd))
4675 res = issue_thinkpad_cmos_command(cmos_cmd);
4676 return (res)? res : count;
4679 static struct device_attribute dev_attr_cmos_command =
4680 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
4682 /* --------------------------------------------------------------------- */
4684 static int __init cmos_init(struct ibm_init_struct *iibm)
4688 vdbg_printk(TPACPI_DBG_INIT,
4689 "initializing cmos commands subdriver\n");
4691 TPACPI_ACPIHANDLE_INIT(cmos);
4693 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
4694 str_supported(cmos_handle != NULL));
4696 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4700 return (cmos_handle)? 0 : 1;
4703 static void cmos_exit(void)
4705 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4708 static int cmos_read(char *p)
4712 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4713 R30, R31, T20-22, X20-21 */
4715 len += sprintf(p + len, "status:\t\tnot supported\n");
4717 len += sprintf(p + len, "status:\t\tsupported\n");
4718 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
4724 static int cmos_write(char *buf)
4729 while ((cmd = next_cmd(&buf))) {
4730 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
4731 cmos_cmd >= 0 && cmos_cmd <= 21) {
4736 res = issue_thinkpad_cmos_command(cmos_cmd);
4744 static struct ibm_struct cmos_driver_data = {
4747 .write = cmos_write,
4751 /*************************************************************************
4755 enum led_access_mode {
4756 TPACPI_LED_NONE = 0,
4757 TPACPI_LED_570, /* 570 */
4758 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4759 TPACPI_LED_NEW, /* all others */
4762 enum { /* For TPACPI_LED_OLD */
4763 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
4764 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
4765 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
4768 static enum led_access_mode led_supported;
4770 TPACPI_HANDLE(led, ec, "SLED", /* 570 */
4771 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
4772 /* T20-22, X20-21 */
4773 "LED", /* all others */
4776 #define TPACPI_LED_NUMLEDS 16
4777 static struct tpacpi_led_classdev *tpacpi_leds;
4778 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
4779 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
4780 /* there's a limit of 19 chars + NULL before 2.6.26 */
4782 "tpacpi:orange:batt",
4783 "tpacpi:green:batt",
4784 "tpacpi::dock_active",
4785 "tpacpi::bay_active",
4786 "tpacpi::dock_batt",
4787 "tpacpi::unknown_led",
4789 "tpacpi::dock_status1",
4790 "tpacpi::dock_status2",
4791 "tpacpi::unknown_led2",
4792 "tpacpi::unknown_led3",
4793 "tpacpi::thinkvantage",
4795 #define TPACPI_SAFE_LEDS 0x1081U
4797 static inline bool tpacpi_is_led_restricted(const unsigned int led)
4799 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
4802 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
4806 static int led_get_status(const unsigned int led)
4809 enum led_status_t led_s;
4811 switch (led_supported) {
4812 case TPACPI_LED_570:
4813 if (!acpi_evalf(ec_handle,
4814 &status, "GLED", "dd", 1 << led))
4816 led_s = (status == 0)?
4821 tpacpi_led_state_cache[led] = led_s;
4830 static int led_set_status(const unsigned int led,
4831 const enum led_status_t ledstatus)
4833 /* off, on, blink. Index is led_status_t */
4834 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
4835 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4839 switch (led_supported) {
4840 case TPACPI_LED_570:
4842 if (unlikely(led > 7))
4844 if (unlikely(tpacpi_is_led_restricted(led)))
4846 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4847 (1 << led), led_sled_arg1[ledstatus]))
4850 case TPACPI_LED_OLD:
4851 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
4852 if (unlikely(led > 7))
4854 if (unlikely(tpacpi_is_led_restricted(led)))
4856 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
4858 rc = ec_write(TPACPI_LED_EC_HLBL,
4859 (ledstatus == TPACPI_LED_BLINK) << led);
4861 rc = ec_write(TPACPI_LED_EC_HLCL,
4862 (ledstatus != TPACPI_LED_OFF) << led);
4864 case TPACPI_LED_NEW:
4866 if (unlikely(led >= TPACPI_LED_NUMLEDS))
4868 if (unlikely(tpacpi_is_led_restricted(led)))
4870 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4871 led, led_led_arg1[ledstatus]))
4879 tpacpi_led_state_cache[led] = ledstatus;
4884 static void led_set_status_worker(struct work_struct *work)
4886 struct tpacpi_led_classdev *data =
4887 container_of(work, struct tpacpi_led_classdev, work);
4889 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4890 led_set_status(data->led, data->new_state);
4893 static void led_sysfs_set(struct led_classdev *led_cdev,
4894 enum led_brightness brightness)
4896 struct tpacpi_led_classdev *data = container_of(led_cdev,
4897 struct tpacpi_led_classdev, led_classdev);
4899 if (brightness == LED_OFF)
4900 data->new_state = TPACPI_LED_OFF;
4901 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
4902 data->new_state = TPACPI_LED_ON;
4904 data->new_state = TPACPI_LED_BLINK;
4906 queue_work(tpacpi_wq, &data->work);
4909 static int led_sysfs_blink_set(struct led_classdev *led_cdev,
4910 unsigned long *delay_on, unsigned long *delay_off)
4912 struct tpacpi_led_classdev *data = container_of(led_cdev,
4913 struct tpacpi_led_classdev, led_classdev);
4915 /* Can we choose the flash rate? */
4916 if (*delay_on == 0 && *delay_off == 0) {
4917 /* yes. set them to the hardware blink rate (1 Hz) */
4918 *delay_on = 500; /* ms */
4919 *delay_off = 500; /* ms */
4920 } else if ((*delay_on != 500) || (*delay_off != 500))
4923 data->new_state = TPACPI_LED_BLINK;
4924 queue_work(tpacpi_wq, &data->work);
4929 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
4933 struct tpacpi_led_classdev *data = container_of(led_cdev,
4934 struct tpacpi_led_classdev, led_classdev);
4936 rc = led_get_status(data->led);
4938 if (rc == TPACPI_LED_OFF || rc < 0)
4939 rc = LED_OFF; /* no error handling in led class :( */
4946 static void led_exit(void)
4950 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4951 if (tpacpi_leds[i].led_classdev.name)
4952 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
4958 static int __init tpacpi_init_led(unsigned int led)
4962 tpacpi_leds[led].led = led;
4964 /* LEDs with no name don't get registered */
4965 if (!tpacpi_led_names[led])
4968 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
4969 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
4970 if (led_supported == TPACPI_LED_570)
4971 tpacpi_leds[led].led_classdev.brightness_get =
4974 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
4976 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
4978 rc = led_classdev_register(&tpacpi_pdev->dev,
4979 &tpacpi_leds[led].led_classdev);
4981 tpacpi_leds[led].led_classdev.name = NULL;
4986 static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
4987 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
4988 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
4989 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
4991 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
4992 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
4993 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
4994 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
4995 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
4996 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
4997 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
4998 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5000 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5001 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5002 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5003 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5004 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5006 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5007 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5008 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5009 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5011 /* (1) - may have excess leds enabled on MSB */
5013 /* Defaults (order matters, keep last, don't reorder!) */
5015 .vendor = PCI_VENDOR_ID_LENOVO,
5016 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5019 { /* IBM ThinkPads with no EC version string */
5020 .vendor = PCI_VENDOR_ID_IBM,
5021 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
5024 { /* IBM ThinkPads with EC version string */
5025 .vendor = PCI_VENDOR_ID_IBM,
5026 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5031 #undef TPACPI_LEDQ_IBM
5032 #undef TPACPI_LEDQ_LNV
5034 static int __init led_init(struct ibm_init_struct *iibm)
5038 unsigned long useful_leds;
5040 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
5042 TPACPI_ACPIHANDLE_INIT(led);
5045 /* led not supported on R30, R31 */
5046 led_supported = TPACPI_LED_NONE;
5047 else if (strlencmp(led_path, "SLED") == 0)
5049 led_supported = TPACPI_LED_570;
5050 else if (strlencmp(led_path, "SYSL") == 0)
5051 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5052 led_supported = TPACPI_LED_OLD;
5055 led_supported = TPACPI_LED_NEW;
5057 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
5058 str_supported(led_supported), led_supported);
5060 if (led_supported == TPACPI_LED_NONE)
5063 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
5066 printk(TPACPI_ERR "Out of memory for LED data\n");
5070 useful_leds = tpacpi_check_quirks(led_useful_qtable,
5071 ARRAY_SIZE(led_useful_qtable));
5073 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
5074 if (!tpacpi_is_led_restricted(i) &&
5075 test_bit(i, &useful_leds)) {
5076 rc = tpacpi_init_led(i);
5084 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5085 printk(TPACPI_NOTICE
5086 "warning: userspace override of important "
5087 "firmware LEDs is enabled\n");
5092 #define str_led_status(s) \
5093 ((s) == TPACPI_LED_OFF ? "off" : \
5094 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
5096 static int led_read(char *p)
5100 if (!led_supported) {
5101 len += sprintf(p + len, "status:\t\tnot supported\n");
5104 len += sprintf(p + len, "status:\t\tsupported\n");
5106 if (led_supported == TPACPI_LED_570) {
5109 for (i = 0; i < 8; i++) {
5110 status = led_get_status(i);
5113 len += sprintf(p + len, "%d:\t\t%s\n",
5114 i, str_led_status(status));
5118 len += sprintf(p + len, "commands:\t"
5119 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
5124 static int led_write(char *buf)
5128 enum led_status_t s;
5133 while ((cmd = next_cmd(&buf))) {
5134 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 15)
5137 if (strstr(cmd, "off")) {
5139 } else if (strstr(cmd, "on")) {
5141 } else if (strstr(cmd, "blink")) {
5142 s = TPACPI_LED_BLINK;
5147 rc = led_set_status(led, s);
5155 static struct ibm_struct led_driver_data = {
5162 /*************************************************************************
5166 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
5168 #define TPACPI_BEEP_Q1 0x0001
5170 static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
5171 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
5172 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
5175 static int __init beep_init(struct ibm_init_struct *iibm)
5177 unsigned long quirks;
5179 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
5181 TPACPI_ACPIHANDLE_INIT(beep);
5183 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
5184 str_supported(beep_handle != NULL));
5186 quirks = tpacpi_check_quirks(beep_quirk_table,
5187 ARRAY_SIZE(beep_quirk_table));
5189 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
5191 return (beep_handle)? 0 : 1;
5194 static int beep_read(char *p)
5199 len += sprintf(p + len, "status:\t\tnot supported\n");
5201 len += sprintf(p + len, "status:\t\tsupported\n");
5202 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
5208 static int beep_write(char *buf)
5216 while ((cmd = next_cmd(&buf))) {
5217 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
5218 beep_cmd >= 0 && beep_cmd <= 17) {
5222 if (tp_features.beep_needs_two_args) {
5223 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
5227 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
5236 static struct ibm_struct beep_driver_data = {
5239 .write = beep_write,
5242 /*************************************************************************
5246 enum thermal_access_mode {
5247 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5248 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5249 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5250 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5251 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5254 enum { /* TPACPI_THERMAL_TPEC_* */
5255 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5256 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5257 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
5260 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5261 struct ibm_thermal_sensors_struct {
5262 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5265 static enum thermal_access_mode thermal_read_mode;
5267 /* idx is zero-based */
5268 static int thermal_get_sensor(int idx, s32 *value)
5274 t = TP_EC_THERMAL_TMP0;
5276 switch (thermal_read_mode) {
5277 #if TPACPI_MAX_THERMAL_SENSORS >= 16
5278 case TPACPI_THERMAL_TPEC_16:
5279 if (idx >= 8 && idx <= 15) {
5280 t = TP_EC_THERMAL_TMP8;
5285 case TPACPI_THERMAL_TPEC_8:
5287 if (!acpi_ec_read(t + idx, &tmp))
5289 *value = tmp * 1000;
5294 case TPACPI_THERMAL_ACPI_UPDT:
5296 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5297 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5299 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5301 *value = (t - 2732) * 100;
5306 case TPACPI_THERMAL_ACPI_TMP07:
5308 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5309 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5311 if (t > 127 || t < -127)
5312 t = TP_EC_THERMAL_TMP_NA;
5318 case TPACPI_THERMAL_NONE:
5326 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5337 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5340 for (i = 0 ; i < n; i++) {
5341 res = thermal_get_sensor(i, &s->temp[i]);
5349 /* sysfs temp##_input -------------------------------------------------- */
5351 static ssize_t thermal_temp_input_show(struct device *dev,
5352 struct device_attribute *attr,
5355 struct sensor_device_attribute *sensor_attr =
5356 to_sensor_dev_attr(attr);
5357 int idx = sensor_attr->index;
5361 res = thermal_get_sensor(idx, &value);
5364 if (value == TP_EC_THERMAL_TMP_NA * 1000)
5367 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5370 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
5371 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5372 thermal_temp_input_show, NULL, _idxB)
5374 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5375 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5376 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5377 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5378 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5379 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5380 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5381 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5382 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5383 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5384 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5385 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5386 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5387 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5388 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5389 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5390 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5393 #define THERMAL_ATTRS(X) \
5394 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5396 static struct attribute *thermal_temp_input_attr[] = {
5416 static const struct attribute_group thermal_temp_input16_group = {
5417 .attrs = thermal_temp_input_attr
5420 static const struct attribute_group thermal_temp_input8_group = {
5421 .attrs = &thermal_temp_input_attr[8]
5424 #undef THERMAL_SENSOR_ATTR_TEMP
5425 #undef THERMAL_ATTRS
5427 /* --------------------------------------------------------------------- */
5429 static int __init thermal_init(struct ibm_init_struct *iibm)
5436 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5438 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
5440 if (thinkpad_id.ec_model) {
5442 * Direct EC access mode: sensors at registers
5443 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5444 * non-implemented, thermal sensors return 0x80 when
5449 for (i = 0; i < 8; i++) {
5450 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
5456 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
5464 /* This is sheer paranoia, but we handle it anyway */
5467 "ThinkPad ACPI EC access misbehaving, "
5468 "falling back to ACPI TMPx access "
5470 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
5473 "ThinkPad ACPI EC access misbehaving, "
5474 "disabling thermal sensors access\n");
5475 thermal_read_mode = TPACPI_THERMAL_NONE;
5480 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
5482 } else if (acpi_tmp7) {
5483 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
5484 /* 600e/x, 770e, 770x */
5485 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
5487 /* Standard ACPI TMPx access, max 8 sensors */
5488 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
5491 /* temperatures not supported on 570, G4x, R30, R31, R32 */
5492 thermal_read_mode = TPACPI_THERMAL_NONE;
5495 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5496 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5499 switch (thermal_read_mode) {
5500 case TPACPI_THERMAL_TPEC_16:
5501 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
5502 &thermal_temp_input16_group);
5506 case TPACPI_THERMAL_TPEC_8:
5507 case TPACPI_THERMAL_ACPI_TMP07:
5508 case TPACPI_THERMAL_ACPI_UPDT:
5509 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
5510 &thermal_temp_input8_group);
5514 case TPACPI_THERMAL_NONE:
5522 static void thermal_exit(void)
5524 switch (thermal_read_mode) {
5525 case TPACPI_THERMAL_TPEC_16:
5526 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
5527 &thermal_temp_input16_group);
5529 case TPACPI_THERMAL_TPEC_8:
5530 case TPACPI_THERMAL_ACPI_TMP07:
5531 case TPACPI_THERMAL_ACPI_UPDT:
5532 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
5533 &thermal_temp_input16_group);
5535 case TPACPI_THERMAL_NONE:
5541 static int thermal_read(char *p)
5545 struct ibm_thermal_sensors_struct t;
5547 n = thermal_get_sensors(&t);
5548 if (unlikely(n < 0))
5551 len += sprintf(p + len, "temperatures:\t");
5554 for (i = 0; i < (n - 1); i++)
5555 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
5556 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
5558 len += sprintf(p + len, "not supported\n");
5563 static struct ibm_struct thermal_driver_data = {
5565 .read = thermal_read,
5566 .exit = thermal_exit,
5569 /*************************************************************************
5573 static u8 ecdump_regs[256];
5575 static int ecdump_read(char *p)
5581 len += sprintf(p + len, "EC "
5582 " +00 +01 +02 +03 +04 +05 +06 +07"
5583 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5584 for (i = 0; i < 256; i += 16) {
5585 len += sprintf(p + len, "EC 0x%02x:", i);
5586 for (j = 0; j < 16; j++) {
5587 if (!acpi_ec_read(i + j, &v))
5589 if (v != ecdump_regs[i + j])
5590 len += sprintf(p + len, " *%02x", v);
5592 len += sprintf(p + len, " %02x", v);
5593 ecdump_regs[i + j] = v;
5595 len += sprintf(p + len, "\n");
5600 /* These are way too dangerous to advertise openly... */
5602 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
5603 " (<offset> is 00-ff, <value> is 00-ff)\n");
5604 len += sprintf(p + len, "commands:\t0x<offset> <value> "
5605 " (<offset> is 00-ff, <value> is 0-255)\n");
5610 static int ecdump_write(char *buf)
5615 while ((cmd = next_cmd(&buf))) {
5616 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
5618 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
5622 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
5623 if (!acpi_ec_write(i, v))
5632 static struct ibm_struct ecdump_driver_data = {
5634 .read = ecdump_read,
5635 .write = ecdump_write,
5636 .flags.experimental = 1,
5639 /*************************************************************************
5640 * Backlight/brightness subdriver
5643 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5646 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5647 * CMOS NVRAM byte 0x5E, bits 0-3.
5649 * EC HBRV (0x31) has the following layout
5650 * Bit 7: unknown function
5651 * Bit 6: unknown function
5652 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5653 * Bit 4: must be set to zero to avoid problems
5654 * Bit 3-0: backlight brightness level
5656 * brightness_get_raw returns status data in the HBRV layout
5658 * WARNING: The X61 has been verified to use HBRV for something else, so
5659 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
5660 * testing on the very early *60 Lenovo models...
5664 TP_EC_BACKLIGHT = 0x31,
5666 /* TP_EC_BACKLIGHT bitmasks */
5667 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
5668 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
5669 TP_EC_BACKLIGHT_MAPSW = 0x20,
5672 enum tpacpi_brightness_access_mode {
5673 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
5674 TPACPI_BRGHT_MODE_EC, /* EC control */
5675 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
5676 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
5677 TPACPI_BRGHT_MODE_MAX
5680 static struct backlight_device *ibm_backlight_device;
5682 static enum tpacpi_brightness_access_mode brightness_mode =
5683 TPACPI_BRGHT_MODE_MAX;
5685 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
5687 static struct mutex brightness_mutex;
5689 /* NVRAM brightness access,
5690 * call with brightness_mutex held! */
5691 static unsigned int tpacpi_brightness_nvram_get(void)
5695 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
5696 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5697 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
5698 lnvram &= (tp_features.bright_16levels) ? 0x0f : 0x07;
5703 static void tpacpi_brightness_checkpoint_nvram(void)
5708 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
5711 vdbg_printk(TPACPI_DBG_BRGHT,
5712 "trying to checkpoint backlight level to NVRAM...\n");
5714 if (mutex_lock_killable(&brightness_mutex) < 0)
5717 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5719 lec &= TP_EC_BACKLIGHT_LVLMSK;
5720 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
5722 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5723 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
5724 /* NVRAM needs update */
5725 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
5726 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
5728 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
5729 dbg_printk(TPACPI_DBG_BRGHT,
5730 "updated NVRAM backlight level to %u (0x%02x)\n",
5731 (unsigned int) lec, (unsigned int) b_nvram);
5733 vdbg_printk(TPACPI_DBG_BRGHT,
5734 "NVRAM backlight level already is %u (0x%02x)\n",
5735 (unsigned int) lec, (unsigned int) b_nvram);
5738 mutex_unlock(&brightness_mutex);
5742 /* call with brightness_mutex held! */
5743 static int tpacpi_brightness_get_raw(int *status)
5747 switch (brightness_mode) {
5748 case TPACPI_BRGHT_MODE_UCMS_STEP:
5749 *status = tpacpi_brightness_nvram_get();
5751 case TPACPI_BRGHT_MODE_EC:
5752 case TPACPI_BRGHT_MODE_ECNVRAM:
5753 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5762 /* call with brightness_mutex held! */
5763 /* do NOT call with illegal backlight level value */
5764 static int tpacpi_brightness_set_ec(unsigned int value)
5768 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5771 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
5772 (lec & TP_EC_BACKLIGHT_CMDMSK) |
5773 (value & TP_EC_BACKLIGHT_LVLMSK))))
5779 /* call with brightness_mutex held! */
5780 static int tpacpi_brightness_set_ucmsstep(unsigned int value)
5783 unsigned int current_value, i;
5785 current_value = tpacpi_brightness_nvram_get();
5787 if (value == current_value)
5790 cmos_cmd = (value > current_value) ?
5791 TP_CMOS_BRIGHTNESS_UP :
5792 TP_CMOS_BRIGHTNESS_DOWN;
5793 inc = (value > current_value) ? 1 : -1;
5795 for (i = current_value; i != value; i += inc)
5796 if (issue_thinkpad_cmos_command(cmos_cmd))
5802 /* May return EINTR which can always be mapped to ERESTARTSYS */
5803 static int brightness_set(unsigned int value)
5807 if (value > ((tp_features.bright_16levels)? 15 : 7) ||
5811 vdbg_printk(TPACPI_DBG_BRGHT,
5812 "set backlight level to %d\n", value);
5814 res = mutex_lock_killable(&brightness_mutex);
5818 switch (brightness_mode) {
5819 case TPACPI_BRGHT_MODE_EC:
5820 case TPACPI_BRGHT_MODE_ECNVRAM:
5821 res = tpacpi_brightness_set_ec(value);
5823 case TPACPI_BRGHT_MODE_UCMS_STEP:
5824 res = tpacpi_brightness_set_ucmsstep(value);
5830 mutex_unlock(&brightness_mutex);
5834 /* sysfs backlight class ----------------------------------------------- */
5836 static int brightness_update_status(struct backlight_device *bd)
5838 unsigned int level =
5839 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
5840 bd->props.power == FB_BLANK_UNBLANK) ?
5841 bd->props.brightness : 0;
5843 dbg_printk(TPACPI_DBG_BRGHT,
5844 "backlight: attempt to set level to %d\n",
5847 /* it is the backlight class's job (caller) to handle
5848 * EINTR and other errors properly */
5849 return brightness_set(level);
5852 static int brightness_get(struct backlight_device *bd)
5856 res = mutex_lock_killable(&brightness_mutex);
5860 res = tpacpi_brightness_get_raw(&status);
5862 mutex_unlock(&brightness_mutex);
5867 return status & TP_EC_BACKLIGHT_LVLMSK;
5870 static struct backlight_ops ibm_backlight_data = {
5871 .get_brightness = brightness_get,
5872 .update_status = brightness_update_status,
5875 /* --------------------------------------------------------------------- */
5878 * These are only useful for models that have only one possibility
5879 * of GPU. If the BIOS model handles both ATI and Intel, don't use
5882 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
5883 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
5884 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
5886 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
5887 /* Models with ATI GPUs known to require ECNVRAM mode */
5888 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
5890 /* Models with ATI GPUs that can use ECNVRAM */
5891 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC),
5892 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
5893 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
5894 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
5896 /* Models with Intel Extreme Graphics 2 */
5897 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC),
5898 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_NOEC),
5899 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_NOEC),
5901 /* Models with Intel GMA900 */
5902 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
5903 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
5904 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
5907 static int __init brightness_init(struct ibm_init_struct *iibm)
5910 unsigned long quirks;
5912 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
5914 mutex_init(&brightness_mutex);
5916 quirks = tpacpi_check_quirks(brightness_quirk_table,
5917 ARRAY_SIZE(brightness_quirk_table));
5920 * We always attempt to detect acpi support, so as to switch
5921 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
5922 * going to publish a backlight interface
5924 b = tpacpi_check_std_acpi_brightness_support();
5927 if (acpi_video_backlight_support()) {
5928 if (brightness_enable > 1) {
5929 printk(TPACPI_NOTICE
5930 "Standard ACPI backlight interface "
5931 "available, not loading native one.\n");
5933 } else if (brightness_enable == 1) {
5934 printk(TPACPI_NOTICE
5935 "Backlight control force enabled, even if standard "
5936 "ACPI backlight interface is available\n");
5939 if (brightness_enable > 1) {
5940 printk(TPACPI_NOTICE
5941 "Standard ACPI backlight interface not "
5942 "available, thinkpad_acpi native "
5943 "brightness control enabled\n");
5948 if (!brightness_enable) {
5949 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
5950 "brightness support disabled by "
5951 "module parameter\n");
5957 "Unsupported brightness interface, "
5958 "please contact %s\n", TPACPI_MAIL);
5962 tp_features.bright_16levels = 1;
5965 * Check for module parameter bogosity, note that we
5966 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
5967 * able to detect "unspecified"
5969 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
5972 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
5973 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
5974 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
5975 if (quirks & TPACPI_BRGHT_Q_EC)
5976 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
5978 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
5980 dbg_printk(TPACPI_DBG_BRGHT,
5981 "driver auto-selected brightness_mode=%d\n",
5986 if (thinkpad_id.vendor != PCI_VENDOR_ID_IBM &&
5987 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
5988 brightness_mode == TPACPI_BRGHT_MODE_EC))
5991 if (tpacpi_brightness_get_raw(&b) < 0)
5994 if (tp_features.bright_16levels)
5996 "detected a 16-level brightness capable ThinkPad\n");
5998 ibm_backlight_device = backlight_device_register(
5999 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
6000 &ibm_backlight_data);
6001 if (IS_ERR(ibm_backlight_device)) {
6002 printk(TPACPI_ERR "Could not register backlight device\n");
6003 return PTR_ERR(ibm_backlight_device);
6005 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6006 "brightness is supported\n");
6008 if (quirks & TPACPI_BRGHT_Q_ASK) {
6009 printk(TPACPI_NOTICE
6010 "brightness: will use unverified default: "
6011 "brightness_mode=%d\n", brightness_mode);
6012 printk(TPACPI_NOTICE
6013 "brightness: please report to %s whether it works well "
6014 "or not on your ThinkPad\n", TPACPI_MAIL);
6017 ibm_backlight_device->props.max_brightness =
6018 (tp_features.bright_16levels)? 15 : 7;
6019 ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
6020 backlight_update_status(ibm_backlight_device);
6025 static void brightness_suspend(pm_message_t state)
6027 tpacpi_brightness_checkpoint_nvram();
6030 static void brightness_shutdown(void)
6032 tpacpi_brightness_checkpoint_nvram();
6035 static void brightness_exit(void)
6037 if (ibm_backlight_device) {
6038 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
6039 "calling backlight_device_unregister()\n");
6040 backlight_device_unregister(ibm_backlight_device);
6043 tpacpi_brightness_checkpoint_nvram();
6046 static int brightness_read(char *p)
6051 level = brightness_get(NULL);
6053 len += sprintf(p + len, "level:\t\tunreadable\n");
6055 len += sprintf(p + len, "level:\t\t%d\n", level);
6056 len += sprintf(p + len, "commands:\tup, down\n");
6057 len += sprintf(p + len, "commands:\tlevel <level>"
6058 " (<level> is 0-%d)\n",
6059 (tp_features.bright_16levels) ? 15 : 7);
6065 static int brightness_write(char *buf)
6070 int max_level = (tp_features.bright_16levels) ? 15 : 7;
6072 level = brightness_get(NULL);
6076 while ((cmd = next_cmd(&buf))) {
6077 if (strlencmp(cmd, "up") == 0) {
6078 if (level < max_level)
6080 } else if (strlencmp(cmd, "down") == 0) {
6083 } else if (sscanf(cmd, "level %d", &level) == 1 &&
6084 level >= 0 && level <= max_level) {
6090 tpacpi_disclose_usertask("procfs brightness",
6091 "set level to %d\n", level);
6094 * Now we know what the final level should be, so we try to set it.
6095 * Doing it this way makes the syscall restartable in case of EINTR
6097 rc = brightness_set(level);
6098 return (rc == -EINTR)? ERESTARTSYS : rc;
6101 static struct ibm_struct brightness_driver_data = {
6102 .name = "brightness",
6103 .read = brightness_read,
6104 .write = brightness_write,
6105 .exit = brightness_exit,
6106 .suspend = brightness_suspend,
6107 .shutdown = brightness_shutdown,
6110 /*************************************************************************
6114 static int volume_offset = 0x30;
6116 static int volume_read(char *p)
6121 if (!acpi_ec_read(volume_offset, &level)) {
6122 len += sprintf(p + len, "level:\t\tunreadable\n");
6124 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
6125 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
6126 len += sprintf(p + len, "commands:\tup, down, mute\n");
6127 len += sprintf(p + len, "commands:\tlevel <level>"
6128 " (<level> is 0-15)\n");
6134 static int volume_write(char *buf)
6136 int cmos_cmd, inc, i;
6138 int new_level, new_mute;
6141 while ((cmd = next_cmd(&buf))) {
6142 if (!acpi_ec_read(volume_offset, &level))
6144 new_mute = mute = level & 0x40;
6145 new_level = level = level & 0xf;
6147 if (strlencmp(cmd, "up") == 0) {
6151 new_level = level == 15 ? 15 : level + 1;
6152 } else if (strlencmp(cmd, "down") == 0) {
6156 new_level = level == 0 ? 0 : level - 1;
6157 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
6158 new_level >= 0 && new_level <= 15) {
6160 } else if (strlencmp(cmd, "mute") == 0) {
6165 if (new_level != level) {
6166 /* mute doesn't change */
6168 cmos_cmd = (new_level > level) ?
6169 TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
6170 inc = new_level > level ? 1 : -1;
6172 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
6173 !acpi_ec_write(volume_offset, level)))
6176 for (i = level; i != new_level; i += inc)
6177 if (issue_thinkpad_cmos_command(cmos_cmd) ||
6178 !acpi_ec_write(volume_offset, i + inc))
6182 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
6183 !acpi_ec_write(volume_offset, new_level + mute))) {
6188 if (new_mute != mute) {
6189 /* level doesn't change */
6191 cmos_cmd = (new_mute) ?
6192 TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
6194 if (issue_thinkpad_cmos_command(cmos_cmd) ||
6195 !acpi_ec_write(volume_offset, level + new_mute))
6203 static struct ibm_struct volume_driver_data = {
6205 .read = volume_read,
6206 .write = volume_write,
6209 /*************************************************************************
6216 * TPACPI_FAN_RD_ACPI_GFAN:
6217 * ACPI GFAN method: returns fan level
6219 * see TPACPI_FAN_WR_ACPI_SFAN
6220 * EC 0x2f (HFSP) not available if GFAN exists
6222 * TPACPI_FAN_WR_ACPI_SFAN:
6223 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
6225 * EC 0x2f (HFSP) might be available *for reading*, but do not use
6228 * TPACPI_FAN_WR_TPEC:
6229 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
6230 * Supported on almost all ThinkPads
6232 * Fan speed changes of any sort (including those caused by the
6233 * disengaged mode) are usually done slowly by the firmware as the
6234 * maximum ammount of fan duty cycle change per second seems to be
6237 * Reading is not available if GFAN exists.
6238 * Writing is not available if SFAN exists.
6241 * 7 automatic mode engaged;
6242 * (default operation mode of the ThinkPad)
6243 * fan level is ignored in this mode.
6244 * 6 full speed mode (takes precedence over bit 7);
6245 * not available on all thinkpads. May disable
6246 * the tachometer while the fan controller ramps up
6247 * the speed (which can take up to a few *minutes*).
6248 * Speeds up fan to 100% duty-cycle, which is far above
6249 * the standard RPM levels. It is not impossible that
6250 * it could cause hardware damage.
6251 * 5-3 unused in some models. Extra bits for fan level
6252 * in others, but still useless as all values above
6253 * 7 map to the same speed as level 7 in these models.
6254 * 2-0 fan level (0..7 usually)
6256 * 0x07 = max (set when temperatures critical)
6257 * Some ThinkPads may have other levels, see
6258 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
6260 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
6261 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
6262 * does so, its initial value is meaningless (0x07).
6264 * For firmware bugs, refer to:
6265 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6269 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
6270 * Main fan tachometer reading (in RPM)
6272 * This register is present on all ThinkPads with a new-style EC, and
6273 * it is known not to be present on the A21m/e, and T22, as there is
6274 * something else in offset 0x84 according to the ACPI DSDT. Other
6275 * ThinkPads from this same time period (and earlier) probably lack the
6276 * tachometer as well.
6278 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
6279 * was never fixed by IBM to report the EC firmware version string
6280 * probably support the tachometer (like the early X models), so
6281 * detecting it is quite hard. We need more data to know for sure.
6283 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
6286 * FIRMWARE BUG: may go stale while the EC is switching to full speed
6289 * For firmware bugs, refer to:
6290 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6294 * ThinkPad EC register 0x31 bit 0 (only on select models)
6296 * When bit 0 of EC register 0x31 is zero, the tachometer registers
6297 * show the speed of the main fan. When bit 0 of EC register 0x31
6298 * is one, the tachometer registers show the speed of the auxiliary
6301 * Fan control seems to affect both fans, regardless of the state
6304 * So far, only the firmware for the X60/X61 non-tablet versions
6305 * seem to support this (firmware TP-7M).
6307 * TPACPI_FAN_WR_ACPI_FANS:
6308 * ThinkPad X31, X40, X41. Not available in the X60.
6310 * FANS ACPI handle: takes three arguments: low speed, medium speed,
6311 * high speed. ACPI DSDT seems to map these three speeds to levels
6312 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
6313 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
6315 * The speeds are stored on handles
6316 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
6318 * There are three default speed sets, acessible as handles:
6319 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
6321 * ACPI DSDT switches which set is in use depending on various
6324 * TPACPI_FAN_WR_TPEC is also available and should be used to
6325 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
6326 * but the ACPI tables just mention level 7.
6329 enum { /* Fan control constants */
6330 fan_status_offset = 0x2f, /* EC register 0x2f */
6331 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
6332 * 0x84 must be read before 0x85 */
6333 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
6334 bit 0 selects which fan is active */
6336 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
6337 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
6339 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
6342 enum fan_status_access_mode {
6343 TPACPI_FAN_NONE = 0, /* No fan status or control */
6344 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
6345 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
6348 enum fan_control_access_mode {
6349 TPACPI_FAN_WR_NONE = 0, /* No fan control */
6350 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
6351 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
6352 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
6355 enum fan_control_commands {
6356 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
6357 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
6358 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
6359 * and also watchdog cmd */
6362 static int fan_control_allowed;
6364 static enum fan_status_access_mode fan_status_access_mode;
6365 static enum fan_control_access_mode fan_control_access_mode;
6366 static enum fan_control_commands fan_control_commands;
6368 static u8 fan_control_initial_status;
6369 static u8 fan_control_desired_level;
6370 static u8 fan_control_resume_level;
6371 static int fan_watchdog_maxinterval;
6373 static struct mutex fan_mutex;
6375 static void fan_watchdog_fire(struct work_struct *ignored);
6376 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
6378 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
6379 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
6380 "\\FSPD", /* 600e/x, 770e, 770x */
6382 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
6383 "JFNS", /* 770x-JL */
6387 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
6388 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
6389 * be in auto mode (0x80).
6391 * This is corrected by any write to HFSP either by the driver, or
6394 * We assume 0x07 really means auto mode while this quirk is active,
6395 * as this is far more likely than the ThinkPad being in level 7,
6396 * which is only used by the firmware during thermal emergencies.
6398 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
6399 * TP-70 (T43, R52), which are known to be buggy.
6402 static void fan_quirk1_setup(void)
6404 if (fan_control_initial_status == 0x07) {
6405 printk(TPACPI_NOTICE
6406 "fan_init: initial fan status is unknown, "
6407 "assuming it is in auto mode\n");
6408 tp_features.fan_ctrl_status_undef = 1;
6412 static void fan_quirk1_handle(u8 *fan_status)
6414 if (unlikely(tp_features.fan_ctrl_status_undef)) {
6415 if (*fan_status != fan_control_initial_status) {
6416 /* something changed the HFSP regisnter since
6417 * driver init time, so it is not undefined
6419 tp_features.fan_ctrl_status_undef = 0;
6421 /* Return most likely status. In fact, it
6422 * might be the only possible status */
6423 *fan_status = TP_EC_FAN_AUTO;
6428 /* Select main fan on X60/X61, NOOP on others */
6429 static bool fan_select_fan1(void)
6431 if (tp_features.second_fan) {
6434 if (ec_read(fan_select_offset, &val) < 0)
6437 if (ec_write(fan_select_offset, val) < 0)
6443 /* Select secondary fan on X60/X61 */
6444 static bool fan_select_fan2(void)
6448 if (!tp_features.second_fan)
6451 if (ec_read(fan_select_offset, &val) < 0)
6454 if (ec_write(fan_select_offset, val) < 0)
6461 * Call with fan_mutex held
6463 static void fan_update_desired_level(u8 status)
6466 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6468 fan_control_desired_level = 7;
6470 fan_control_desired_level = status;
6474 static int fan_get_status(u8 *status)
6479 * Add TPACPI_FAN_RD_ACPI_FANS ? */
6481 switch (fan_status_access_mode) {
6482 case TPACPI_FAN_RD_ACPI_GFAN:
6483 /* 570, 600e/x, 770e, 770x */
6485 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
6493 case TPACPI_FAN_RD_TPEC:
6494 /* all except 570, 600e/x, 770e, 770x */
6495 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
6498 if (likely(status)) {
6500 fan_quirk1_handle(status);
6512 static int fan_get_status_safe(u8 *status)
6517 if (mutex_lock_killable(&fan_mutex))
6518 return -ERESTARTSYS;
6519 rc = fan_get_status(&s);
6521 fan_update_desired_level(s);
6522 mutex_unlock(&fan_mutex);
6530 static int fan_get_speed(unsigned int *speed)
6534 switch (fan_status_access_mode) {
6535 case TPACPI_FAN_RD_TPEC:
6536 /* all except 570, 600e/x, 770e, 770x */
6537 if (unlikely(!fan_select_fan1()))
6539 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
6540 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
6544 *speed = (hi << 8) | lo;
6555 static int fan2_get_speed(unsigned int *speed)
6560 switch (fan_status_access_mode) {
6561 case TPACPI_FAN_RD_TPEC:
6562 /* all except 570, 600e/x, 770e, 770x */
6563 if (unlikely(!fan_select_fan2()))
6565 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
6566 !acpi_ec_read(fan_rpm_offset + 1, &hi);
6567 fan_select_fan1(); /* play it safe */
6572 *speed = (hi << 8) | lo;
6583 static int fan_set_level(int level)
6585 if (!fan_control_allowed)
6588 switch (fan_control_access_mode) {
6589 case TPACPI_FAN_WR_ACPI_SFAN:
6590 if (level >= 0 && level <= 7) {
6591 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
6597 case TPACPI_FAN_WR_ACPI_FANS:
6598 case TPACPI_FAN_WR_TPEC:
6599 if (!(level & TP_EC_FAN_AUTO) &&
6600 !(level & TP_EC_FAN_FULLSPEED) &&
6601 ((level < 0) || (level > 7)))
6604 /* safety net should the EC not support AUTO
6605 * or FULLSPEED mode bits and just ignore them */
6606 if (level & TP_EC_FAN_FULLSPEED)
6607 level |= 7; /* safety min speed 7 */
6608 else if (level & TP_EC_FAN_AUTO)
6609 level |= 4; /* safety min speed 4 */
6611 if (!acpi_ec_write(fan_status_offset, level))
6614 tp_features.fan_ctrl_status_undef = 0;
6621 vdbg_printk(TPACPI_DBG_FAN,
6622 "fan control: set fan control register to 0x%02x\n", level);
6626 static int fan_set_level_safe(int level)
6630 if (!fan_control_allowed)
6633 if (mutex_lock_killable(&fan_mutex))
6634 return -ERESTARTSYS;
6636 if (level == TPACPI_FAN_LAST_LEVEL)
6637 level = fan_control_desired_level;
6639 rc = fan_set_level(level);
6641 fan_update_desired_level(level);
6643 mutex_unlock(&fan_mutex);
6647 static int fan_set_enable(void)
6652 if (!fan_control_allowed)
6655 if (mutex_lock_killable(&fan_mutex))
6656 return -ERESTARTSYS;
6658 switch (fan_control_access_mode) {
6659 case TPACPI_FAN_WR_ACPI_FANS:
6660 case TPACPI_FAN_WR_TPEC:
6661 rc = fan_get_status(&s);
6665 /* Don't go out of emergency fan mode */
6668 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
6671 if (!acpi_ec_write(fan_status_offset, s))
6674 tp_features.fan_ctrl_status_undef = 0;
6679 case TPACPI_FAN_WR_ACPI_SFAN:
6680 rc = fan_get_status(&s);
6686 /* Set fan to at least level 4 */
6689 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
6699 mutex_unlock(&fan_mutex);
6702 vdbg_printk(TPACPI_DBG_FAN,
6703 "fan control: set fan control register to 0x%02x\n",
6708 static int fan_set_disable(void)
6712 if (!fan_control_allowed)
6715 if (mutex_lock_killable(&fan_mutex))
6716 return -ERESTARTSYS;
6719 switch (fan_control_access_mode) {
6720 case TPACPI_FAN_WR_ACPI_FANS:
6721 case TPACPI_FAN_WR_TPEC:
6722 if (!acpi_ec_write(fan_status_offset, 0x00))
6725 fan_control_desired_level = 0;
6726 tp_features.fan_ctrl_status_undef = 0;
6730 case TPACPI_FAN_WR_ACPI_SFAN:
6731 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
6734 fan_control_desired_level = 0;
6742 vdbg_printk(TPACPI_DBG_FAN,
6743 "fan control: set fan control register to 0\n");
6745 mutex_unlock(&fan_mutex);
6749 static int fan_set_speed(int speed)
6753 if (!fan_control_allowed)
6756 if (mutex_lock_killable(&fan_mutex))
6757 return -ERESTARTSYS;
6760 switch (fan_control_access_mode) {
6761 case TPACPI_FAN_WR_ACPI_FANS:
6762 if (speed >= 0 && speed <= 65535) {
6763 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
6764 speed, speed, speed))
6774 mutex_unlock(&fan_mutex);
6778 static void fan_watchdog_reset(void)
6780 static int fan_watchdog_active;
6782 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
6785 if (fan_watchdog_active)
6786 cancel_delayed_work(&fan_watchdog_task);
6788 if (fan_watchdog_maxinterval > 0 &&
6789 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
6790 fan_watchdog_active = 1;
6791 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
6792 msecs_to_jiffies(fan_watchdog_maxinterval
6795 "failed to queue the fan watchdog, "
6796 "watchdog will not trigger\n");
6799 fan_watchdog_active = 0;
6802 static void fan_watchdog_fire(struct work_struct *ignored)
6806 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
6809 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
6810 rc = fan_set_enable();
6812 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
6813 "will try again later...\n", -rc);
6814 /* reschedule for later */
6815 fan_watchdog_reset();
6820 * SYSFS fan layout: hwmon compatible (device)
6823 * 0: "disengaged" mode
6825 * 2: native EC "auto" mode (recommended, hardware default)
6827 * pwm*: set speed in manual mode, ignored otherwise.
6828 * 0 is level 0; 255 is level 7. Intermediate points done with linear
6831 * fan*_input: tachometer reading, RPM
6834 * SYSFS fan layout: extensions
6836 * fan_watchdog (driver):
6837 * fan watchdog interval in seconds, 0 disables (default), max 120
6840 /* sysfs fan pwm1_enable ----------------------------------------------- */
6841 static ssize_t fan_pwm1_enable_show(struct device *dev,
6842 struct device_attribute *attr,
6848 res = fan_get_status_safe(&status);
6852 if (status & TP_EC_FAN_FULLSPEED) {
6854 } else if (status & TP_EC_FAN_AUTO) {
6859 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
6862 static ssize_t fan_pwm1_enable_store(struct device *dev,
6863 struct device_attribute *attr,
6864 const char *buf, size_t count)
6869 if (parse_strtoul(buf, 2, &t))
6872 tpacpi_disclose_usertask("hwmon pwm1_enable",
6873 "set fan mode to %lu\n", t);
6877 level = TP_EC_FAN_FULLSPEED;
6880 level = TPACPI_FAN_LAST_LEVEL;
6883 level = TP_EC_FAN_AUTO;
6886 /* reserved for software-controlled auto mode */
6892 res = fan_set_level_safe(level);
6898 fan_watchdog_reset();
6903 static struct device_attribute dev_attr_fan_pwm1_enable =
6904 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
6905 fan_pwm1_enable_show, fan_pwm1_enable_store);
6907 /* sysfs fan pwm1 ------------------------------------------------------ */
6908 static ssize_t fan_pwm1_show(struct device *dev,
6909 struct device_attribute *attr,
6915 res = fan_get_status_safe(&status);
6920 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
6921 status = fan_control_desired_level;
6926 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
6929 static ssize_t fan_pwm1_store(struct device *dev,
6930 struct device_attribute *attr,
6931 const char *buf, size_t count)
6935 u8 status, newlevel;
6937 if (parse_strtoul(buf, 255, &s))
6940 tpacpi_disclose_usertask("hwmon pwm1",
6941 "set fan speed to %lu\n", s);
6943 /* scale down from 0-255 to 0-7 */
6944 newlevel = (s >> 5) & 0x07;
6946 if (mutex_lock_killable(&fan_mutex))
6947 return -ERESTARTSYS;
6949 rc = fan_get_status(&status);
6950 if (!rc && (status &
6951 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6952 rc = fan_set_level(newlevel);
6956 fan_update_desired_level(newlevel);
6957 fan_watchdog_reset();
6961 mutex_unlock(&fan_mutex);
6962 return (rc)? rc : count;
6965 static struct device_attribute dev_attr_fan_pwm1 =
6966 __ATTR(pwm1, S_IWUSR | S_IRUGO,
6967 fan_pwm1_show, fan_pwm1_store);
6969 /* sysfs fan fan1_input ------------------------------------------------ */
6970 static ssize_t fan_fan1_input_show(struct device *dev,
6971 struct device_attribute *attr,
6977 res = fan_get_speed(&speed);
6981 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
6984 static struct device_attribute dev_attr_fan_fan1_input =
6985 __ATTR(fan1_input, S_IRUGO,
6986 fan_fan1_input_show, NULL);
6988 /* sysfs fan fan2_input ------------------------------------------------ */
6989 static ssize_t fan_fan2_input_show(struct device *dev,
6990 struct device_attribute *attr,
6996 res = fan2_get_speed(&speed);
7000 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
7003 static struct device_attribute dev_attr_fan_fan2_input =
7004 __ATTR(fan2_input, S_IRUGO,
7005 fan_fan2_input_show, NULL);
7007 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
7008 static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
7011 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
7014 static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
7015 const char *buf, size_t count)
7019 if (parse_strtoul(buf, 120, &t))
7022 if (!fan_control_allowed)
7025 fan_watchdog_maxinterval = t;
7026 fan_watchdog_reset();
7028 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
7033 static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
7034 fan_fan_watchdog_show, fan_fan_watchdog_store);
7036 /* --------------------------------------------------------------------- */
7037 static struct attribute *fan_attributes[] = {
7038 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
7039 &dev_attr_fan_fan1_input.attr,
7040 NULL, /* for fan2_input */
7044 static const struct attribute_group fan_attr_group = {
7045 .attrs = fan_attributes,
7048 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
7049 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7051 #define TPACPI_FAN_QI(__id1, __id2, __quirks) \
7052 { .vendor = PCI_VENDOR_ID_IBM, \
7053 .bios = TPACPI_MATCH_ANY, \
7054 .ec = TPID(__id1, __id2), \
7055 .quirks = __quirks }
7057 #define TPACPI_FAN_QL(__id1, __id2, __quirks) \
7058 { .vendor = PCI_VENDOR_ID_LENOVO, \
7059 .bios = TPACPI_MATCH_ANY, \
7060 .ec = TPID(__id1, __id2), \
7061 .quirks = __quirks }
7063 static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
7064 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
7065 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
7066 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
7067 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
7068 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
7071 #undef TPACPI_FAN_QL
7072 #undef TPACPI_FAN_QI
7074 static int __init fan_init(struct ibm_init_struct *iibm)
7077 unsigned long quirks;
7079 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
7080 "initializing fan subdriver\n");
7082 mutex_init(&fan_mutex);
7083 fan_status_access_mode = TPACPI_FAN_NONE;
7084 fan_control_access_mode = TPACPI_FAN_WR_NONE;
7085 fan_control_commands = 0;
7086 fan_watchdog_maxinterval = 0;
7087 tp_features.fan_ctrl_status_undef = 0;
7088 tp_features.second_fan = 0;
7089 fan_control_desired_level = 7;
7091 TPACPI_ACPIHANDLE_INIT(fans);
7092 TPACPI_ACPIHANDLE_INIT(gfan);
7093 TPACPI_ACPIHANDLE_INIT(sfan);
7095 quirks = tpacpi_check_quirks(fan_quirk_table,
7096 ARRAY_SIZE(fan_quirk_table));
7099 /* 570, 600e/x, 770e, 770x */
7100 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
7102 /* all other ThinkPads: note that even old-style
7103 * ThinkPad ECs supports the fan control register */
7104 if (likely(acpi_ec_read(fan_status_offset,
7105 &fan_control_initial_status))) {
7106 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
7107 if (quirks & TPACPI_FAN_Q1)
7109 if (quirks & TPACPI_FAN_2FAN) {
7110 tp_features.second_fan = 1;
7111 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
7112 "secondary fan support enabled\n");
7116 "ThinkPad ACPI EC access misbehaving, "
7117 "fan status and control unavailable\n");
7124 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
7125 fan_control_commands |=
7126 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
7129 /* gfan without sfan means no fan control */
7130 /* all other models implement TP EC 0x2f control */
7134 fan_control_access_mode =
7135 TPACPI_FAN_WR_ACPI_FANS;
7136 fan_control_commands |=
7137 TPACPI_FAN_CMD_SPEED |
7138 TPACPI_FAN_CMD_LEVEL |
7139 TPACPI_FAN_CMD_ENABLE;
7141 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
7142 fan_control_commands |=
7143 TPACPI_FAN_CMD_LEVEL |
7144 TPACPI_FAN_CMD_ENABLE;
7149 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
7150 "fan is %s, modes %d, %d\n",
7151 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
7152 fan_control_access_mode != TPACPI_FAN_WR_NONE),
7153 fan_status_access_mode, fan_control_access_mode);
7155 /* fan control master switch */
7156 if (!fan_control_allowed) {
7157 fan_control_access_mode = TPACPI_FAN_WR_NONE;
7158 fan_control_commands = 0;
7159 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
7160 "fan control features disabled by parameter\n");
7163 /* update fan_control_desired_level */
7164 if (fan_status_access_mode != TPACPI_FAN_NONE)
7165 fan_get_status_safe(NULL);
7167 if (fan_status_access_mode != TPACPI_FAN_NONE ||
7168 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
7169 if (tp_features.second_fan) {
7170 /* attach second fan tachometer */
7171 fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
7172 &dev_attr_fan_fan2_input.attr;
7174 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
7179 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
7180 &driver_attr_fan_watchdog);
7182 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
7191 static void fan_exit(void)
7193 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
7194 "cancelling any pending fan watchdog tasks\n");
7196 /* FIXME: can we really do this unconditionally? */
7197 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
7198 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
7199 &driver_attr_fan_watchdog);
7201 cancel_delayed_work(&fan_watchdog_task);
7202 flush_workqueue(tpacpi_wq);
7205 static void fan_suspend(pm_message_t state)
7209 if (!fan_control_allowed)
7212 /* Store fan status in cache */
7213 fan_control_resume_level = 0;
7214 rc = fan_get_status_safe(&fan_control_resume_level);
7216 printk(TPACPI_NOTICE
7217 "failed to read fan level for later "
7218 "restore during resume: %d\n", rc);
7220 /* if it is undefined, don't attempt to restore it.
7222 if (tp_features.fan_ctrl_status_undef)
7223 fan_control_resume_level = 0;
7226 static void fan_resume(void)
7228 u8 current_level = 7;
7229 bool do_set = false;
7232 /* DSDT *always* updates status on resume */
7233 tp_features.fan_ctrl_status_undef = 0;
7235 if (!fan_control_allowed ||
7236 !fan_control_resume_level ||
7237 (fan_get_status_safe(¤t_level) < 0))
7240 switch (fan_control_access_mode) {
7241 case TPACPI_FAN_WR_ACPI_SFAN:
7242 /* never decrease fan level */
7243 do_set = (fan_control_resume_level > current_level);
7245 case TPACPI_FAN_WR_ACPI_FANS:
7246 case TPACPI_FAN_WR_TPEC:
7247 /* never decrease fan level, scale is:
7248 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
7250 * We expect the firmware to set either 7 or AUTO, but we
7251 * handle FULLSPEED out of paranoia.
7253 * So, we can safely only restore FULLSPEED or 7, anything
7254 * else could slow the fan. Restoring AUTO is useless, at
7255 * best that's exactly what the DSDT already set (it is the
7258 * Always keep in mind that the DSDT *will* have set the
7259 * fans to what the vendor supposes is the best level. We
7260 * muck with it only to speed the fan up.
7262 if (fan_control_resume_level != 7 &&
7263 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
7266 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
7267 (current_level != fan_control_resume_level);
7273 printk(TPACPI_NOTICE
7274 "restoring fan level to 0x%02x\n",
7275 fan_control_resume_level);
7276 rc = fan_set_level_safe(fan_control_resume_level);
7278 printk(TPACPI_NOTICE
7279 "failed to restore fan level: %d\n", rc);
7283 static int fan_read(char *p)
7288 unsigned int speed = 0;
7290 switch (fan_status_access_mode) {
7291 case TPACPI_FAN_RD_ACPI_GFAN:
7292 /* 570, 600e/x, 770e, 770x */
7293 rc = fan_get_status_safe(&status);
7297 len += sprintf(p + len, "status:\t\t%s\n"
7299 (status != 0) ? "enabled" : "disabled", status);
7302 case TPACPI_FAN_RD_TPEC:
7303 /* all except 570, 600e/x, 770e, 770x */
7304 rc = fan_get_status_safe(&status);
7308 len += sprintf(p + len, "status:\t\t%s\n",
7309 (status != 0) ? "enabled" : "disabled");
7311 rc = fan_get_speed(&speed);
7315 len += sprintf(p + len, "speed:\t\t%d\n", speed);
7317 if (status & TP_EC_FAN_FULLSPEED)
7318 /* Disengaged mode takes precedence */
7319 len += sprintf(p + len, "level:\t\tdisengaged\n");
7320 else if (status & TP_EC_FAN_AUTO)
7321 len += sprintf(p + len, "level:\t\tauto\n");
7323 len += sprintf(p + len, "level:\t\t%d\n", status);
7326 case TPACPI_FAN_NONE:
7328 len += sprintf(p + len, "status:\t\tnot supported\n");
7331 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
7332 len += sprintf(p + len, "commands:\tlevel <level>");
7334 switch (fan_control_access_mode) {
7335 case TPACPI_FAN_WR_ACPI_SFAN:
7336 len += sprintf(p + len, " (<level> is 0-7)\n");
7340 len += sprintf(p + len, " (<level> is 0-7, "
7341 "auto, disengaged, full-speed)\n");
7346 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
7347 len += sprintf(p + len, "commands:\tenable, disable\n"
7348 "commands:\twatchdog <timeout> (<timeout> "
7349 "is 0 (off), 1-120 (seconds))\n");
7351 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
7352 len += sprintf(p + len, "commands:\tspeed <speed>"
7353 " (<speed> is 0-65535)\n");
7358 static int fan_write_cmd_level(const char *cmd, int *rc)
7362 if (strlencmp(cmd, "level auto") == 0)
7363 level = TP_EC_FAN_AUTO;
7364 else if ((strlencmp(cmd, "level disengaged") == 0) |
7365 (strlencmp(cmd, "level full-speed") == 0))
7366 level = TP_EC_FAN_FULLSPEED;
7367 else if (sscanf(cmd, "level %d", &level) != 1)
7370 *rc = fan_set_level_safe(level);
7372 printk(TPACPI_ERR "level command accepted for unsupported "
7373 "access mode %d", fan_control_access_mode);
7375 tpacpi_disclose_usertask("procfs fan",
7376 "set level to %d\n", level);
7381 static int fan_write_cmd_enable(const char *cmd, int *rc)
7383 if (strlencmp(cmd, "enable") != 0)
7386 *rc = fan_set_enable();
7388 printk(TPACPI_ERR "enable command accepted for unsupported "
7389 "access mode %d", fan_control_access_mode);
7391 tpacpi_disclose_usertask("procfs fan", "enable\n");
7396 static int fan_write_cmd_disable(const char *cmd, int *rc)
7398 if (strlencmp(cmd, "disable") != 0)
7401 *rc = fan_set_disable();
7403 printk(TPACPI_ERR "disable command accepted for unsupported "
7404 "access mode %d", fan_control_access_mode);
7406 tpacpi_disclose_usertask("procfs fan", "disable\n");
7411 static int fan_write_cmd_speed(const char *cmd, int *rc)
7416 * Support speed <low> <medium> <high> ? */
7418 if (sscanf(cmd, "speed %d", &speed) != 1)
7421 *rc = fan_set_speed(speed);
7423 printk(TPACPI_ERR "speed command accepted for unsupported "
7424 "access mode %d", fan_control_access_mode);
7426 tpacpi_disclose_usertask("procfs fan",
7427 "set speed to %d\n", speed);
7432 static int fan_write_cmd_watchdog(const char *cmd, int *rc)
7436 if (sscanf(cmd, "watchdog %d", &interval) != 1)
7439 if (interval < 0 || interval > 120)
7442 fan_watchdog_maxinterval = interval;
7443 tpacpi_disclose_usertask("procfs fan",
7444 "set watchdog timer to %d\n",
7451 static int fan_write(char *buf)
7456 while (!rc && (cmd = next_cmd(&buf))) {
7457 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
7458 fan_write_cmd_level(cmd, &rc)) &&
7459 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
7460 (fan_write_cmd_enable(cmd, &rc) ||
7461 fan_write_cmd_disable(cmd, &rc) ||
7462 fan_write_cmd_watchdog(cmd, &rc))) &&
7463 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
7464 fan_write_cmd_speed(cmd, &rc))
7468 fan_watchdog_reset();
7474 static struct ibm_struct fan_driver_data = {
7479 .suspend = fan_suspend,
7480 .resume = fan_resume,
7483 /****************************************************************************
7484 ****************************************************************************
7488 ****************************************************************************
7489 ****************************************************************************/
7491 /* sysfs name ---------------------------------------------------------- */
7492 static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
7493 struct device_attribute *attr,
7496 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7499 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
7500 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
7502 /* --------------------------------------------------------------------- */
7505 static struct proc_dir_entry *proc_dir;
7508 * Module and infrastructure proble, init and exit handling
7511 static int force_load;
7513 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
7514 static const char * __init str_supported(int is_supported)
7516 static char text_unsupported[] __initdata = "not supported";
7518 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
7520 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
7522 static void ibm_exit(struct ibm_struct *ibm)
7524 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
7526 list_del_init(&ibm->all_drivers);
7528 if (ibm->flags.acpi_notify_installed) {
7529 dbg_printk(TPACPI_DBG_EXIT,
7530 "%s: acpi_remove_notify_handler\n", ibm->name);
7532 acpi_remove_notify_handler(*ibm->acpi->handle,
7534 dispatch_acpi_notify);
7535 ibm->flags.acpi_notify_installed = 0;
7536 ibm->flags.acpi_notify_installed = 0;
7539 if (ibm->flags.proc_created) {
7540 dbg_printk(TPACPI_DBG_EXIT,
7541 "%s: remove_proc_entry\n", ibm->name);
7542 remove_proc_entry(ibm->name, proc_dir);
7543 ibm->flags.proc_created = 0;
7546 if (ibm->flags.acpi_driver_registered) {
7547 dbg_printk(TPACPI_DBG_EXIT,
7548 "%s: acpi_bus_unregister_driver\n", ibm->name);
7550 acpi_bus_unregister_driver(ibm->acpi->driver);
7551 kfree(ibm->acpi->driver);
7552 ibm->acpi->driver = NULL;
7553 ibm->flags.acpi_driver_registered = 0;
7556 if (ibm->flags.init_called && ibm->exit) {
7558 ibm->flags.init_called = 0;
7561 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
7564 static int __init ibm_init(struct ibm_init_struct *iibm)
7567 struct ibm_struct *ibm = iibm->data;
7568 struct proc_dir_entry *entry;
7570 BUG_ON(ibm == NULL);
7572 INIT_LIST_HEAD(&ibm->all_drivers);
7574 if (ibm->flags.experimental && !experimental)
7577 dbg_printk(TPACPI_DBG_INIT,
7578 "probing for %s\n", ibm->name);
7581 ret = iibm->init(iibm);
7583 return 0; /* probe failed */
7587 ibm->flags.init_called = 1;
7591 if (ibm->acpi->hid) {
7592 ret = register_tpacpi_subdriver(ibm);
7597 if (ibm->acpi->notify) {
7598 ret = setup_acpi_notify(ibm);
7599 if (ret == -ENODEV) {
7600 printk(TPACPI_NOTICE "disabling subdriver %s\n",
7610 dbg_printk(TPACPI_DBG_INIT,
7611 "%s installed\n", ibm->name);
7614 entry = create_proc_entry(ibm->name,
7615 S_IFREG | S_IRUGO | S_IWUSR,
7618 printk(TPACPI_ERR "unable to create proc entry %s\n",
7624 entry->read_proc = &dispatch_procfs_read;
7626 entry->write_proc = &dispatch_procfs_write;
7627 ibm->flags.proc_created = 1;
7630 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
7635 dbg_printk(TPACPI_DBG_INIT,
7636 "%s: at error exit path with result %d\n",
7640 return (ret < 0)? ret : 0;
7645 static bool __pure __init tpacpi_is_fw_digit(const char c)
7647 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
7650 /* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
7651 static bool __pure __init tpacpi_is_valid_fw_id(const char* const s,
7654 return s && strlen(s) >= 8 &&
7655 tpacpi_is_fw_digit(s[0]) &&
7656 tpacpi_is_fw_digit(s[1]) &&
7657 s[2] == t && s[3] == 'T' &&
7658 tpacpi_is_fw_digit(s[4]) &&
7659 tpacpi_is_fw_digit(s[5]) &&
7660 s[6] == 'W' && s[7] == 'W';
7663 /* returns 0 - probe ok, or < 0 - probe error.
7664 * Probe ok doesn't mean thinkpad found.
7665 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
7666 static int __must_check __init get_thinkpad_model_data(
7667 struct thinkpad_id_data *tp)
7669 const struct dmi_device *dev = NULL;
7670 char ec_fw_string[18];
7676 memset(tp, 0, sizeof(*tp));
7678 if (dmi_name_in_vendors("IBM"))
7679 tp->vendor = PCI_VENDOR_ID_IBM;
7680 else if (dmi_name_in_vendors("LENOVO"))
7681 tp->vendor = PCI_VENDOR_ID_LENOVO;
7685 s = dmi_get_system_info(DMI_BIOS_VERSION);
7686 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
7687 if (s && !tp->bios_version_str)
7690 /* Really ancient ThinkPad 240X will fail this, which is fine */
7691 if (!tpacpi_is_valid_fw_id(tp->bios_version_str, 'E'))
7694 tp->bios_model = tp->bios_version_str[0]
7695 | (tp->bios_version_str[1] << 8);
7696 tp->bios_release = (tp->bios_version_str[4] << 8)
7697 | tp->bios_version_str[5];
7700 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
7701 * X32 or newer, all Z series; Some models must have an
7702 * up-to-date BIOS or they will not be detected.
7704 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7706 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
7707 if (sscanf(dev->name,
7708 "IBM ThinkPad Embedded Controller -[%17c",
7709 ec_fw_string) == 1) {
7710 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
7711 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
7713 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
7714 if (!tp->ec_version_str)
7717 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) {
7718 tp->ec_model = ec_fw_string[0]
7719 | (ec_fw_string[1] << 8);
7720 tp->ec_release = (ec_fw_string[4] << 8)
7723 printk(TPACPI_NOTICE
7724 "ThinkPad firmware release %s "
7725 "doesn't match the known patterns\n",
7727 printk(TPACPI_NOTICE
7728 "please report this to %s\n",
7735 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
7736 if (s && !strnicmp(s, "ThinkPad", 8)) {
7737 tp->model_str = kstrdup(s, GFP_KERNEL);
7742 s = dmi_get_system_info(DMI_PRODUCT_NAME);
7743 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
7744 if (s && !tp->nummodel_str)
7750 static int __init probe_for_thinkpad(void)
7758 * Non-ancient models have better DMI tagging, but very old models
7759 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
7761 is_thinkpad = (thinkpad_id.model_str != NULL) ||
7762 (thinkpad_id.ec_model != 0) ||
7763 tpacpi_is_fw_known();
7765 /* ec is required because many other handles are relative to it */
7766 TPACPI_ACPIHANDLE_INIT(ec);
7770 "Not yet supported ThinkPad detected!\n");
7774 if (!is_thinkpad && !force_load)
7781 /* Module init, exit, parameters */
7783 static struct ibm_init_struct ibms_init[] __initdata = {
7785 .init = thinkpad_acpi_driver_init,
7786 .data = &thinkpad_acpi_driver_data,
7789 .init = hotkey_init,
7790 .data = &hotkey_driver_data,
7793 .init = bluetooth_init,
7794 .data = &bluetooth_driver_data,
7798 .data = &wan_driver_data,
7802 .data = &uwb_driver_data,
7804 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
7807 .data = &video_driver_data,
7812 .data = &light_driver_data,
7816 .data = &cmos_driver_data,
7820 .data = &led_driver_data,
7824 .data = &beep_driver_data,
7827 .init = thermal_init,
7828 .data = &thermal_driver_data,
7831 .data = &ecdump_driver_data,
7834 .init = brightness_init,
7835 .data = &brightness_driver_data,
7838 .data = &volume_driver_data,
7842 .data = &fan_driver_data,
7846 static int __init set_ibm_param(const char *val, struct kernel_param *kp)
7849 struct ibm_struct *ibm;
7851 if (!kp || !kp->name || !val)
7854 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7855 ibm = ibms_init[i].data;
7856 WARN_ON(ibm == NULL);
7858 if (!ibm || !ibm->name)
7861 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
7862 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
7864 strcpy(ibms_init[i].param, val);
7865 strcat(ibms_init[i].param, ",");
7873 module_param(experimental, int, 0);
7874 MODULE_PARM_DESC(experimental,
7875 "Enables experimental features when non-zero");
7877 module_param_named(debug, dbg_level, uint, 0);
7878 MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
7880 module_param(force_load, bool, 0);
7881 MODULE_PARM_DESC(force_load,
7882 "Attempts to load the driver even on a "
7883 "mis-identified ThinkPad when true");
7885 module_param_named(fan_control, fan_control_allowed, bool, 0);
7886 MODULE_PARM_DESC(fan_control,
7887 "Enables setting fan parameters features when true");
7889 module_param_named(brightness_mode, brightness_mode, uint, 0);
7890 MODULE_PARM_DESC(brightness_mode,
7891 "Selects brightness control strategy: "
7892 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
7894 module_param(brightness_enable, uint, 0);
7895 MODULE_PARM_DESC(brightness_enable,
7896 "Enables backlight control when 1, disables when 0");
7898 module_param(hotkey_report_mode, uint, 0);
7899 MODULE_PARM_DESC(hotkey_report_mode,
7900 "used for backwards compatibility with userspace, "
7901 "see documentation");
7903 #define TPACPI_PARAM(feature) \
7904 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
7905 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
7906 "at module load, see documentation")
7908 TPACPI_PARAM(hotkey);
7909 TPACPI_PARAM(bluetooth);
7910 TPACPI_PARAM(video);
7911 TPACPI_PARAM(light);
7915 TPACPI_PARAM(ecdump);
7916 TPACPI_PARAM(brightness);
7917 TPACPI_PARAM(volume);
7920 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
7921 module_param(dbg_wlswemul, uint, 0);
7922 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
7923 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
7924 MODULE_PARM_DESC(wlsw_state,
7925 "Initial state of the emulated WLSW switch");
7927 module_param(dbg_bluetoothemul, uint, 0);
7928 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
7929 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
7930 MODULE_PARM_DESC(bluetooth_state,
7931 "Initial state of the emulated bluetooth switch");
7933 module_param(dbg_wwanemul, uint, 0);
7934 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
7935 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
7936 MODULE_PARM_DESC(wwan_state,
7937 "Initial state of the emulated WWAN switch");
7939 module_param(dbg_uwbemul, uint, 0);
7940 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
7941 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
7942 MODULE_PARM_DESC(uwb_state,
7943 "Initial state of the emulated UWB switch");
7946 static void thinkpad_acpi_module_exit(void)
7948 struct ibm_struct *ibm, *itmp;
7950 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
7952 list_for_each_entry_safe_reverse(ibm, itmp,
7953 &tpacpi_all_drivers,
7958 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
7960 if (tpacpi_inputdev) {
7961 if (tp_features.input_device_registered)
7962 input_unregister_device(tpacpi_inputdev);
7964 input_free_device(tpacpi_inputdev);
7968 hwmon_device_unregister(tpacpi_hwmon);
7970 if (tp_features.sensors_pdev_attrs_registered)
7971 device_remove_file(&tpacpi_sensors_pdev->dev,
7972 &dev_attr_thinkpad_acpi_pdev_name);
7973 if (tpacpi_sensors_pdev)
7974 platform_device_unregister(tpacpi_sensors_pdev);
7976 platform_device_unregister(tpacpi_pdev);
7978 if (tp_features.sensors_pdrv_attrs_registered)
7979 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
7980 if (tp_features.platform_drv_attrs_registered)
7981 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
7983 if (tp_features.sensors_pdrv_registered)
7984 platform_driver_unregister(&tpacpi_hwmon_pdriver);
7986 if (tp_features.platform_drv_registered)
7987 platform_driver_unregister(&tpacpi_pdriver);
7990 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
7993 destroy_workqueue(tpacpi_wq);
7995 kfree(thinkpad_id.bios_version_str);
7996 kfree(thinkpad_id.ec_version_str);
7997 kfree(thinkpad_id.model_str);
8001 static int __init thinkpad_acpi_module_init(void)
8005 tpacpi_lifecycle = TPACPI_LIFE_INIT;
8007 /* Parameter checking */
8008 if (hotkey_report_mode > 2)
8011 /* Driver-level probe */
8013 ret = get_thinkpad_model_data(&thinkpad_id);
8016 "unable to get DMI data: %d\n", ret);
8017 thinkpad_acpi_module_exit();
8020 ret = probe_for_thinkpad();
8022 thinkpad_acpi_module_exit();
8026 /* Driver initialization */
8028 TPACPI_ACPIHANDLE_INIT(ecrd);
8029 TPACPI_ACPIHANDLE_INIT(ecwr);
8031 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
8033 thinkpad_acpi_module_exit();
8037 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
8040 "unable to create proc dir " TPACPI_PROC_DIR);
8041 thinkpad_acpi_module_exit();
8045 ret = platform_driver_register(&tpacpi_pdriver);
8048 "unable to register main platform driver\n");
8049 thinkpad_acpi_module_exit();
8052 tp_features.platform_drv_registered = 1;
8054 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
8057 "unable to register hwmon platform driver\n");
8058 thinkpad_acpi_module_exit();
8061 tp_features.sensors_pdrv_registered = 1;
8063 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
8065 tp_features.platform_drv_attrs_registered = 1;
8066 ret = tpacpi_create_driver_attributes(
8067 &tpacpi_hwmon_pdriver.driver);
8071 "unable to create sysfs driver attributes\n");
8072 thinkpad_acpi_module_exit();
8075 tp_features.sensors_pdrv_attrs_registered = 1;
8078 /* Device initialization */
8079 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
8081 if (IS_ERR(tpacpi_pdev)) {
8082 ret = PTR_ERR(tpacpi_pdev);
8084 printk(TPACPI_ERR "unable to register platform device\n");
8085 thinkpad_acpi_module_exit();
8088 tpacpi_sensors_pdev = platform_device_register_simple(
8089 TPACPI_HWMON_DRVR_NAME,
8091 if (IS_ERR(tpacpi_sensors_pdev)) {
8092 ret = PTR_ERR(tpacpi_sensors_pdev);
8093 tpacpi_sensors_pdev = NULL;
8095 "unable to register hwmon platform device\n");
8096 thinkpad_acpi_module_exit();
8099 ret = device_create_file(&tpacpi_sensors_pdev->dev,
8100 &dev_attr_thinkpad_acpi_pdev_name);
8103 "unable to create sysfs hwmon device attributes\n");
8104 thinkpad_acpi_module_exit();
8107 tp_features.sensors_pdev_attrs_registered = 1;
8108 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
8109 if (IS_ERR(tpacpi_hwmon)) {
8110 ret = PTR_ERR(tpacpi_hwmon);
8111 tpacpi_hwmon = NULL;
8112 printk(TPACPI_ERR "unable to register hwmon device\n");
8113 thinkpad_acpi_module_exit();
8116 mutex_init(&tpacpi_inputdev_send_mutex);
8117 tpacpi_inputdev = input_allocate_device();
8118 if (!tpacpi_inputdev) {
8119 printk(TPACPI_ERR "unable to allocate input device\n");
8120 thinkpad_acpi_module_exit();
8123 /* Prepare input device, but don't register */
8124 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
8125 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
8126 tpacpi_inputdev->id.bustype = BUS_HOST;
8127 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
8128 thinkpad_id.vendor :
8130 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
8131 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
8133 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
8134 ret = ibm_init(&ibms_init[i]);
8135 if (ret >= 0 && *ibms_init[i].param)
8136 ret = ibms_init[i].data->write(ibms_init[i].param);
8138 thinkpad_acpi_module_exit();
8142 ret = input_register_device(tpacpi_inputdev);
8144 printk(TPACPI_ERR "unable to register input device\n");
8145 thinkpad_acpi_module_exit();
8148 tp_features.input_device_registered = 1;
8151 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
8155 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
8158 * This will autoload the driver in almost every ThinkPad
8159 * in widespread use.
8161 * Only _VERY_ old models, like the 240, 240x and 570 lack
8162 * the HKEY event interface.
8164 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
8167 * DMI matching for module autoloading
8169 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
8170 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
8172 * Only models listed in thinkwiki will be supported, so add yours
8173 * if it is not there yet.
8175 #define IBM_BIOS_MODULE_ALIAS(__type) \
8176 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
8178 /* Ancient thinkpad BIOSes have to be identified by
8179 * BIOS type or model number, and there are far less
8180 * BIOS types than model numbers... */
8181 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
8183 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
8184 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
8185 MODULE_DESCRIPTION(TPACPI_DESC);
8186 MODULE_VERSION(TPACPI_VERSION);
8187 MODULE_LICENSE("GPL");
8189 module_init(thinkpad_acpi_module_init);
8190 module_exit(thinkpad_acpi_module_exit);