2 * thinkpad_acpi.c - ThinkPad ACPI Extras
5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
24 #define TPACPI_VERSION "0.22"
25 #define TPACPI_SYSFS_VERSION 0x020300
29 * 2007-10-20 changelog trimmed down
31 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
34 * 2006-11-22 0.13 new maintainer
35 * changelog now lives in git commit history, and will
36 * not be updated further in-file.
38 * 2005-03-17 0.11 support for 600e, 770x
39 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
41 * 2005-01-16 0.9 use MODULE_VERSION
42 * thanks to Henrik Brix Andersen <brix@gentoo.org>
43 * fix parameter passing on module loading
44 * thanks to Rusty Russell <rusty@rustcorp.com.au>
45 * thanks to Jim Radford <radford@blackbean.org>
46 * 2004-11-08 0.8 fix init error case, don't return from a macro
47 * thanks to Chris Wright <chrisw@osdl.org>
50 #include <linux/kernel.h>
51 #include <linux/module.h>
52 #include <linux/init.h>
53 #include <linux/types.h>
54 #include <linux/string.h>
55 #include <linux/list.h>
56 #include <linux/mutex.h>
57 #include <linux/sched.h>
58 #include <linux/kthread.h>
59 #include <linux/freezer.h>
60 #include <linux/delay.h>
62 #include <linux/nvram.h>
63 #include <linux/proc_fs.h>
64 #include <linux/sysfs.h>
65 #include <linux/backlight.h>
67 #include <linux/platform_device.h>
68 #include <linux/hwmon.h>
69 #include <linux/hwmon-sysfs.h>
70 #include <linux/input.h>
71 #include <linux/leds.h>
72 #include <linux/rfkill.h>
73 #include <asm/uaccess.h>
75 #include <linux/dmi.h>
76 #include <linux/jiffies.h>
77 #include <linux/workqueue.h>
79 #include <acpi/acpi_drivers.h>
81 #include <linux/pci_ids.h>
84 /* ThinkPad CMOS commands */
85 #define TP_CMOS_VOLUME_DOWN 0
86 #define TP_CMOS_VOLUME_UP 1
87 #define TP_CMOS_VOLUME_MUTE 2
88 #define TP_CMOS_BRIGHTNESS_UP 4
89 #define TP_CMOS_BRIGHTNESS_DOWN 5
90 #define TP_CMOS_THINKLIGHT_ON 12
91 #define TP_CMOS_THINKLIGHT_OFF 13
95 TP_NVRAM_ADDR_HK2 = 0x57,
96 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
97 TP_NVRAM_ADDR_VIDEO = 0x59,
98 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
99 TP_NVRAM_ADDR_MIXER = 0x60,
102 /* NVRAM bit masks */
104 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
105 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
106 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
107 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
108 TP_NVRAM_MASK_THINKLIGHT = 0x10,
109 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
110 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
111 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
112 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
113 TP_NVRAM_MASK_MUTE = 0x40,
114 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
115 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
116 TP_NVRAM_POS_LEVEL_VOLUME = 0,
120 #define TPACPI_ACPI_HKEY_HID "IBM0068"
123 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
124 #define TPACPI_HKEY_INPUT_VERSION 0x4101
126 /* ACPI \WGSV commands */
128 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
129 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
130 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
131 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
134 /* TP_ACPI_WGSV_GET_STATE bits */
136 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
137 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
138 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
139 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
140 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
141 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
142 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
143 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
144 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
145 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
148 /****************************************************************************
152 #define TPACPI_NAME "thinkpad"
153 #define TPACPI_DESC "ThinkPad ACPI Extras"
154 #define TPACPI_FILE TPACPI_NAME "_acpi"
155 #define TPACPI_URL "http://ibm-acpi.sf.net/"
156 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
158 #define TPACPI_PROC_DIR "ibm"
159 #define TPACPI_ACPI_EVENT_PREFIX "ibm"
160 #define TPACPI_DRVR_NAME TPACPI_FILE
161 #define TPACPI_DRVR_SHORTNAME "tpacpi"
162 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
164 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
165 #define TPACPI_WORKQUEUE_NAME "ktpacpid"
167 #define TPACPI_MAX_ACPI_ARGS 3
169 /* rfkill switches */
171 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
172 TPACPI_RFK_WWAN_SW_ID,
173 TPACPI_RFK_UWB_SW_ID,
177 #define TPACPI_LOG TPACPI_FILE ": "
178 #define TPACPI_EMERG KERN_EMERG TPACPI_LOG
179 #define TPACPI_ALERT KERN_ALERT TPACPI_LOG
180 #define TPACPI_CRIT KERN_CRIT TPACPI_LOG
181 #define TPACPI_ERR KERN_ERR TPACPI_LOG
182 #define TPACPI_WARN KERN_WARNING TPACPI_LOG
183 #define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
184 #define TPACPI_INFO KERN_INFO TPACPI_LOG
185 #define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
187 /* Debugging printk groups */
188 #define TPACPI_DBG_ALL 0xffff
189 #define TPACPI_DBG_DISCLOSETASK 0x8000
190 #define TPACPI_DBG_INIT 0x0001
191 #define TPACPI_DBG_EXIT 0x0002
193 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
194 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
195 #define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
198 /****************************************************************************
199 * Driver-wide structs and misc. variables
204 struct tp_acpi_drv_struct {
205 const struct acpi_device_id *hid;
206 struct acpi_driver *driver;
208 void (*notify) (struct ibm_struct *, u32);
211 struct acpi_device *device;
217 int (*read) (char *);
218 int (*write) (char *);
220 void (*resume) (void);
221 void (*suspend) (pm_message_t state);
222 void (*shutdown) (void);
224 struct list_head all_drivers;
226 struct tp_acpi_drv_struct *acpi;
229 u8 acpi_driver_registered:1;
230 u8 acpi_notify_installed:1;
237 struct ibm_init_struct {
240 int (*init) (struct ibm_init_struct *);
241 struct ibm_struct *data;
245 #ifdef CONFIG_THINKPAD_ACPI_BAY
258 u32 bright_16levels:1;
259 u32 bright_acpimode:1;
262 u32 fan_ctrl_status_undef:1;
263 u32 input_device_registered:1;
264 u32 platform_drv_registered:1;
265 u32 platform_drv_attrs_registered:1;
266 u32 sensors_pdrv_registered:1;
267 u32 sensors_pdrv_attrs_registered:1;
268 u32 sensors_pdev_attrs_registered:1;
269 u32 hotkey_poll_active:1;
273 u16 hotkey_mask_ff:1;
274 u16 bright_cmos_ec_unsync:1;
277 struct thinkpad_id_data {
278 unsigned int vendor; /* ThinkPad vendor:
279 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
281 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
282 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
284 u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
287 char *model_str; /* ThinkPad T43 */
288 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
290 static struct thinkpad_id_data thinkpad_id;
293 TPACPI_LIFE_INIT = 0,
298 static int experimental;
299 static u32 dbg_level;
301 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_brightness new_brightness;
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); \
356 /****************************************************************************
357 ****************************************************************************
359 * ACPI Helpers and device model
361 ****************************************************************************
362 ****************************************************************************/
364 /*************************************************************************
368 static acpi_handle root_handle;
370 #define TPACPI_HANDLE(object, parent, paths...) \
371 static acpi_handle object##_handle; \
372 static acpi_handle *object##_parent = &parent##_handle; \
373 static char *object##_path; \
374 static char *object##_paths[] = { paths }
376 TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
377 "\\_SB.PCI.ISA.EC", /* 570 */
378 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
379 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
380 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
381 "\\_SB.PCI0.ICH3.EC0", /* R31 */
382 "\\_SB.PCI0.LPC.EC", /* all others */
385 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
386 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
388 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
390 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
391 "\\CMS", /* R40, R40e */
394 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
395 "^HKEY", /* R30, R31 */
396 "HKEY", /* all others */
399 TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
400 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
401 "\\_SB.PCI0.VID0", /* 770e */
402 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
403 "\\_SB.PCI0.AGP.VID", /* all others */
407 /*************************************************************************
411 static int acpi_evalf(acpi_handle handle,
412 void *res, char *method, char *fmt, ...)
415 struct acpi_object_list params;
416 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
417 struct acpi_buffer result, *resultp;
418 union acpi_object out_obj;
426 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
439 params.pointer = &in_objs[0];
446 in_objs[params.count].integer.value = va_arg(ap, int);
447 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
449 /* add more types as needed */
451 printk(TPACPI_ERR "acpi_evalf() called "
452 "with invalid format character '%c'\n", c);
458 if (res_type != 'v') {
459 result.length = sizeof(out_obj);
460 result.pointer = &out_obj;
465 status = acpi_evaluate_object(handle, method, ¶ms, resultp);
470 *(int *)res = out_obj.integer.value;
471 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
474 success = status == AE_OK;
476 /* add more types as needed */
478 printk(TPACPI_ERR "acpi_evalf() called "
479 "with invalid format character '%c'\n", res_type);
483 if (!success && !quiet)
484 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
485 method, fmt0, status);
490 static int acpi_ec_read(int i, u8 *p)
495 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
499 if (ec_read(i, p) < 0)
506 static int acpi_ec_write(int i, u8 v)
509 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
512 if (ec_write(i, v) < 0)
519 #if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_BAY)
520 static int _sta(acpi_handle handle)
524 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
531 static int issue_thinkpad_cmos_command(int cmos_cmd)
536 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
542 /*************************************************************************
546 #define TPACPI_ACPIHANDLE_INIT(object) \
547 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
548 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
550 static void drv_acpi_handle_init(char *name,
551 acpi_handle *handle, acpi_handle parent,
552 char **paths, int num_paths, char **path)
557 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
560 for (i = 0; i < num_paths; i++) {
561 status = acpi_get_handle(parent, paths[i], handle);
562 if (ACPI_SUCCESS(status)) {
564 dbg_printk(TPACPI_DBG_INIT,
565 "Found ACPI handle %s for %s\n",
571 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
576 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
578 struct ibm_struct *ibm = data;
580 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
583 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
586 ibm->acpi->notify(ibm, event);
589 static int __init setup_acpi_notify(struct ibm_struct *ibm)
596 if (!*ibm->acpi->handle)
599 vdbg_printk(TPACPI_DBG_INIT,
600 "setting up ACPI notify for %s\n", ibm->name);
602 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
604 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
609 ibm->acpi->device->driver_data = ibm;
610 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
611 TPACPI_ACPI_EVENT_PREFIX,
614 status = acpi_install_notify_handler(*ibm->acpi->handle,
615 ibm->acpi->type, dispatch_acpi_notify, ibm);
616 if (ACPI_FAILURE(status)) {
617 if (status == AE_ALREADY_EXISTS) {
619 "another device driver is already "
620 "handling %s events\n", ibm->name);
623 "acpi_install_notify_handler(%s) failed: %d\n",
628 ibm->flags.acpi_notify_installed = 1;
632 static int __init tpacpi_device_add(struct acpi_device *device)
637 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
641 dbg_printk(TPACPI_DBG_INIT,
642 "registering %s as an ACPI driver\n", ibm->name);
646 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
647 if (!ibm->acpi->driver) {
649 "failed to allocate memory for ibm->acpi->driver\n");
653 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
654 ibm->acpi->driver->ids = ibm->acpi->hid;
656 ibm->acpi->driver->ops.add = &tpacpi_device_add;
658 rc = acpi_bus_register_driver(ibm->acpi->driver);
660 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
662 kfree(ibm->acpi->driver);
663 ibm->acpi->driver = NULL;
665 ibm->flags.acpi_driver_registered = 1;
671 /****************************************************************************
672 ****************************************************************************
676 ****************************************************************************
677 ****************************************************************************/
679 static int dispatch_procfs_read(char *page, char **start, off_t off,
680 int count, int *eof, void *data)
682 struct ibm_struct *ibm = data;
685 if (!ibm || !ibm->read)
688 len = ibm->read(page);
692 if (len <= off + count)
704 static int dispatch_procfs_write(struct file *file,
705 const char __user *userbuf,
706 unsigned long count, void *data)
708 struct ibm_struct *ibm = data;
712 if (!ibm || !ibm->write)
715 kernbuf = kmalloc(count + 2, GFP_KERNEL);
719 if (copy_from_user(kernbuf, userbuf, count)) {
725 strcat(kernbuf, ",");
726 ret = ibm->write(kernbuf);
735 static char *next_cmd(char **cmds)
740 while ((end = strchr(start, ',')) && end == start)
752 /****************************************************************************
753 ****************************************************************************
755 * Device model: input, hwmon and platform
757 ****************************************************************************
758 ****************************************************************************/
760 static struct platform_device *tpacpi_pdev;
761 static struct platform_device *tpacpi_sensors_pdev;
762 static struct device *tpacpi_hwmon;
763 static struct input_dev *tpacpi_inputdev;
764 static struct mutex tpacpi_inputdev_send_mutex;
765 static LIST_HEAD(tpacpi_all_drivers);
767 static int tpacpi_suspend_handler(struct platform_device *pdev,
770 struct ibm_struct *ibm, *itmp;
772 list_for_each_entry_safe(ibm, itmp,
776 (ibm->suspend)(state);
782 static int tpacpi_resume_handler(struct platform_device *pdev)
784 struct ibm_struct *ibm, *itmp;
786 list_for_each_entry_safe(ibm, itmp,
796 static void tpacpi_shutdown_handler(struct platform_device *pdev)
798 struct ibm_struct *ibm, *itmp;
800 list_for_each_entry_safe(ibm, itmp,
808 static struct platform_driver tpacpi_pdriver = {
810 .name = TPACPI_DRVR_NAME,
811 .owner = THIS_MODULE,
813 .suspend = tpacpi_suspend_handler,
814 .resume = tpacpi_resume_handler,
815 .shutdown = tpacpi_shutdown_handler,
818 static struct platform_driver tpacpi_hwmon_pdriver = {
820 .name = TPACPI_HWMON_DRVR_NAME,
821 .owner = THIS_MODULE,
825 /*************************************************************************
826 * sysfs support helpers
829 struct attribute_set {
830 unsigned int members, max_members;
831 struct attribute_group group;
834 struct attribute_set_obj {
835 struct attribute_set s;
837 } __attribute__((packed));
839 static struct attribute_set *create_attr_set(unsigned int max_members,
842 struct attribute_set_obj *sobj;
844 if (max_members == 0)
847 /* Allocates space for implicit NULL at the end too */
848 sobj = kzalloc(sizeof(struct attribute_set_obj) +
849 max_members * sizeof(struct attribute *),
853 sobj->s.max_members = max_members;
854 sobj->s.group.attrs = &sobj->a;
855 sobj->s.group.name = name;
860 #define destroy_attr_set(_set) \
863 /* not multi-threaded safe, use it in a single thread per set */
864 static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
869 if (s->members >= s->max_members)
872 s->group.attrs[s->members] = attr;
878 static int add_many_to_attr_set(struct attribute_set *s,
879 struct attribute **attr,
884 for (i = 0; i < count; i++) {
885 res = add_to_attr_set(s, attr[i]);
893 static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
895 sysfs_remove_group(kobj, &s->group);
899 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
900 sysfs_create_group(_kobj, &_attr_set->group)
902 static int parse_strtoul(const char *buf,
903 unsigned long max, unsigned long *value)
907 while (*buf && isspace(*buf))
909 *value = simple_strtoul(buf, &endp, 0);
910 while (*endp && isspace(*endp))
912 if (*endp || *value > max)
918 static void tpacpi_disable_brightness_delay(void)
920 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
922 "ACPI backlight control delay disabled\n");
925 static int __init tpacpi_query_bcl_levels(acpi_handle handle)
927 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
928 union acpi_object *obj;
931 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
932 obj = (union acpi_object *)buffer.pointer;
933 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
934 printk(TPACPI_ERR "Unknown _BCL data, "
935 "please report this to %s\n", TPACPI_MAIL);
938 rc = obj->package.count;
944 kfree(buffer.pointer);
948 static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle,
949 u32 lvl, void *context, void **rv)
951 char name[ACPI_PATH_SEGMENT_LENGTH];
952 struct acpi_buffer buffer = { sizeof(name), &name };
954 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
955 !strncmp("_BCL", name, sizeof(name) - 1)) {
957 **(int **)rv = tpacpi_query_bcl_levels(handle);
958 return AE_CTRL_TERMINATE;
965 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
967 static int __init tpacpi_check_std_acpi_brightness_support(void)
971 void *bcl_ptr = &bcl_levels;
974 TPACPI_ACPIHANDLE_INIT(vid);
980 * Search for a _BCL method, and execute it. This is safe on all
981 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
982 * BIOS in ACPI backlight control mode. We do NOT have to care
983 * about calling the _BCL method in an enabled video device, any
984 * will do for our purposes.
987 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
988 tpacpi_acpi_walk_find_bcl, NULL,
991 if (ACPI_SUCCESS(status) && bcl_levels > 2) {
992 tp_features.bright_acpimode = 1;
993 return (bcl_levels - 2);
999 static int __init tpacpi_new_rfkill(const unsigned int id,
1000 struct rfkill **rfk,
1001 const enum rfkill_type rfktype,
1003 const bool set_default,
1004 int (*toggle_radio)(void *, enum rfkill_state),
1005 int (*get_state)(void *, enum rfkill_state *))
1008 enum rfkill_state initial_state = RFKILL_STATE_SOFT_BLOCKED;
1010 res = get_state(NULL, &initial_state);
1013 "failed to read initial state for %s, error %d; "
1014 "will turn radio off\n", name, res);
1015 } else if (set_default) {
1016 /* try to set the initial state as the default for the rfkill
1017 * type, since we ask the firmware to preserve it across S5 in
1019 rfkill_set_default(rfktype,
1020 (initial_state == RFKILL_STATE_UNBLOCKED) ?
1021 RFKILL_STATE_UNBLOCKED :
1022 RFKILL_STATE_SOFT_BLOCKED);
1025 *rfk = rfkill_allocate(&tpacpi_pdev->dev, rfktype);
1028 "failed to allocate memory for rfkill class\n");
1032 (*rfk)->name = name;
1033 (*rfk)->get_state = get_state;
1034 (*rfk)->toggle_radio = toggle_radio;
1035 (*rfk)->state = initial_state;
1037 res = rfkill_register(*rfk);
1040 "failed to register %s rfkill switch: %d\n",
1050 static void printk_deprecated_attribute(const char * const what,
1051 const char * const details)
1053 tpacpi_log_usertask("deprecated sysfs attribute");
1054 printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and "
1055 "will be removed. %s\n",
1059 static void printk_deprecated_rfkill_attribute(const char * const what)
1061 printk_deprecated_attribute(what,
1062 "Please switch to generic rfkill before year 2010");
1065 /*************************************************************************
1066 * thinkpad-acpi driver attributes
1069 /* interface_version --------------------------------------------------- */
1070 static ssize_t tpacpi_driver_interface_version_show(
1071 struct device_driver *drv,
1074 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1077 static DRIVER_ATTR(interface_version, S_IRUGO,
1078 tpacpi_driver_interface_version_show, NULL);
1080 /* debug_level --------------------------------------------------------- */
1081 static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
1084 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1087 static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
1088 const char *buf, size_t count)
1092 if (parse_strtoul(buf, 0xffff, &t))
1100 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
1101 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
1103 /* version ------------------------------------------------------------- */
1104 static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
1107 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1108 TPACPI_DESC, TPACPI_VERSION);
1111 static DRIVER_ATTR(version, S_IRUGO,
1112 tpacpi_driver_version_show, NULL);
1114 /* --------------------------------------------------------------------- */
1116 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1118 static void tpacpi_send_radiosw_update(void);
1120 /* wlsw_emulstate ------------------------------------------------------ */
1121 static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
1124 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1127 static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
1128 const char *buf, size_t count)
1132 if (parse_strtoul(buf, 1, &t))
1135 if (tpacpi_wlsw_emulstate != t) {
1136 tpacpi_wlsw_emulstate = !!t;
1137 tpacpi_send_radiosw_update();
1139 tpacpi_wlsw_emulstate = !!t;
1144 static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
1145 tpacpi_driver_wlsw_emulstate_show,
1146 tpacpi_driver_wlsw_emulstate_store);
1148 /* bluetooth_emulstate ------------------------------------------------- */
1149 static ssize_t tpacpi_driver_bluetooth_emulstate_show(
1150 struct device_driver *drv,
1153 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1156 static ssize_t tpacpi_driver_bluetooth_emulstate_store(
1157 struct device_driver *drv,
1158 const char *buf, size_t count)
1162 if (parse_strtoul(buf, 1, &t))
1165 tpacpi_bluetooth_emulstate = !!t;
1170 static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
1171 tpacpi_driver_bluetooth_emulstate_show,
1172 tpacpi_driver_bluetooth_emulstate_store);
1174 /* wwan_emulstate ------------------------------------------------- */
1175 static ssize_t tpacpi_driver_wwan_emulstate_show(
1176 struct device_driver *drv,
1179 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1182 static ssize_t tpacpi_driver_wwan_emulstate_store(
1183 struct device_driver *drv,
1184 const char *buf, size_t count)
1188 if (parse_strtoul(buf, 1, &t))
1191 tpacpi_wwan_emulstate = !!t;
1196 static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
1197 tpacpi_driver_wwan_emulstate_show,
1198 tpacpi_driver_wwan_emulstate_store);
1200 /* uwb_emulstate ------------------------------------------------- */
1201 static ssize_t tpacpi_driver_uwb_emulstate_show(
1202 struct device_driver *drv,
1205 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1208 static ssize_t tpacpi_driver_uwb_emulstate_store(
1209 struct device_driver *drv,
1210 const char *buf, size_t count)
1214 if (parse_strtoul(buf, 1, &t))
1217 tpacpi_uwb_emulstate = !!t;
1222 static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
1223 tpacpi_driver_uwb_emulstate_show,
1224 tpacpi_driver_uwb_emulstate_store);
1227 /* --------------------------------------------------------------------- */
1229 static struct driver_attribute *tpacpi_driver_attributes[] = {
1230 &driver_attr_debug_level, &driver_attr_version,
1231 &driver_attr_interface_version,
1234 static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1240 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1241 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1245 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1246 if (!res && dbg_wlswemul)
1247 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1248 if (!res && dbg_bluetoothemul)
1249 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1250 if (!res && dbg_wwanemul)
1251 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
1252 if (!res && dbg_uwbemul)
1253 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
1259 static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1263 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
1264 driver_remove_file(drv, tpacpi_driver_attributes[i]);
1266 #ifdef THINKPAD_ACPI_DEBUGFACILITIES
1267 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1268 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1269 driver_remove_file(drv, &driver_attr_wwan_emulstate);
1270 driver_remove_file(drv, &driver_attr_uwb_emulstate);
1274 /****************************************************************************
1275 ****************************************************************************
1279 ****************************************************************************
1280 ****************************************************************************/
1282 /*************************************************************************
1283 * thinkpad-acpi init subdriver
1286 static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
1288 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
1289 printk(TPACPI_INFO "%s\n", TPACPI_URL);
1291 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
1292 (thinkpad_id.bios_version_str) ?
1293 thinkpad_id.bios_version_str : "unknown",
1294 (thinkpad_id.ec_version_str) ?
1295 thinkpad_id.ec_version_str : "unknown");
1297 if (thinkpad_id.vendor && thinkpad_id.model_str)
1298 printk(TPACPI_INFO "%s %s, model %s\n",
1299 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
1300 "IBM" : ((thinkpad_id.vendor ==
1301 PCI_VENDOR_ID_LENOVO) ?
1302 "Lenovo" : "Unknown vendor"),
1303 thinkpad_id.model_str,
1304 (thinkpad_id.nummodel_str) ?
1305 thinkpad_id.nummodel_str : "unknown");
1310 static int thinkpad_acpi_driver_read(char *p)
1314 len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC);
1315 len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION);
1320 static struct ibm_struct thinkpad_acpi_driver_data = {
1322 .read = thinkpad_acpi_driver_read,
1325 /*************************************************************************
1329 enum { /* hot key scan codes (derived from ACPI DSDT) */
1330 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1331 TP_ACPI_HOTKEYSCAN_FNF2,
1332 TP_ACPI_HOTKEYSCAN_FNF3,
1333 TP_ACPI_HOTKEYSCAN_FNF4,
1334 TP_ACPI_HOTKEYSCAN_FNF5,
1335 TP_ACPI_HOTKEYSCAN_FNF6,
1336 TP_ACPI_HOTKEYSCAN_FNF7,
1337 TP_ACPI_HOTKEYSCAN_FNF8,
1338 TP_ACPI_HOTKEYSCAN_FNF9,
1339 TP_ACPI_HOTKEYSCAN_FNF10,
1340 TP_ACPI_HOTKEYSCAN_FNF11,
1341 TP_ACPI_HOTKEYSCAN_FNF12,
1342 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1343 TP_ACPI_HOTKEYSCAN_FNINSERT,
1344 TP_ACPI_HOTKEYSCAN_FNDELETE,
1345 TP_ACPI_HOTKEYSCAN_FNHOME,
1346 TP_ACPI_HOTKEYSCAN_FNEND,
1347 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1348 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1349 TP_ACPI_HOTKEYSCAN_FNSPACE,
1350 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1351 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1352 TP_ACPI_HOTKEYSCAN_MUTE,
1353 TP_ACPI_HOTKEYSCAN_THINKPAD,
1356 enum { /* Keys available through NVRAM polling */
1357 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1358 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1361 enum { /* Positions of some of the keys in hotkey masks */
1362 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1363 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1364 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1365 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1366 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1367 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1368 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1369 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1370 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1371 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1372 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1375 enum { /* NVRAM to ACPI HKEY group map */
1376 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1377 TP_ACPI_HKEY_ZOOM_MASK |
1378 TP_ACPI_HKEY_DISPSWTCH_MASK |
1379 TP_ACPI_HKEY_HIBERNATE_MASK,
1380 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1381 TP_ACPI_HKEY_BRGHTDWN_MASK,
1382 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1383 TP_ACPI_HKEY_VOLDWN_MASK |
1384 TP_ACPI_HKEY_MUTE_MASK,
1387 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1388 struct tp_nvram_state {
1389 u16 thinkpad_toggle:1;
1391 u16 display_toggle:1;
1392 u16 thinklight_toggle:1;
1393 u16 hibernate_toggle:1;
1394 u16 displayexp_toggle:1;
1395 u16 display_state:1;
1396 u16 brightness_toggle:1;
1397 u16 volume_toggle:1;
1400 u8 brightness_level;
1404 static struct task_struct *tpacpi_hotkey_task;
1405 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1406 static int hotkey_poll_freq = 10; /* Hz */
1407 static struct mutex hotkey_thread_mutex;
1408 static struct mutex hotkey_thread_data_mutex;
1409 static unsigned int hotkey_config_change;
1411 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1413 #define hotkey_source_mask 0U
1415 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1417 static struct mutex hotkey_mutex;
1419 static enum { /* Reasons for waking up */
1420 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1421 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1422 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1423 } hotkey_wakeup_reason;
1425 static int hotkey_autosleep_ack;
1427 static u32 hotkey_orig_mask;
1428 static u32 hotkey_all_mask;
1429 static u32 hotkey_reserved_mask;
1430 static u32 hotkey_mask;
1432 static unsigned int hotkey_report_mode;
1434 static u16 *hotkey_keycode_map;
1436 static struct attribute_set *hotkey_dev_attributes;
1438 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1439 #define HOTKEY_CONFIG_CRITICAL_START \
1441 mutex_lock(&hotkey_thread_data_mutex); \
1442 hotkey_config_change++; \
1444 #define HOTKEY_CONFIG_CRITICAL_END \
1445 mutex_unlock(&hotkey_thread_data_mutex);
1447 #define HOTKEY_CONFIG_CRITICAL_START
1448 #define HOTKEY_CONFIG_CRITICAL_END
1449 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1451 /* HKEY.MHKG() return bits */
1452 #define TP_HOTKEY_TABLET_MASK (1 << 3)
1454 static int hotkey_get_wlsw(int *status)
1456 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1458 *status = !!tpacpi_wlsw_emulstate;
1462 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
1467 static int hotkey_get_tablet_mode(int *status)
1471 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
1474 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
1479 * Call with hotkey_mutex held
1481 static int hotkey_mask_get(void)
1485 if (tp_features.hotkey_mask) {
1486 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
1489 hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
1495 * Call with hotkey_mutex held
1497 static int hotkey_mask_set(u32 mask)
1502 if (tp_features.hotkey_mask) {
1503 if (!tp_warned.hotkey_mask_ff &&
1504 (mask == 0xffff || mask == 0xffffff ||
1505 mask == 0xffffffff)) {
1506 tp_warned.hotkey_mask_ff = 1;
1507 printk(TPACPI_NOTICE
1508 "setting the hotkey mask to 0x%08x is likely "
1509 "not the best way to go about it\n", mask);
1510 printk(TPACPI_NOTICE
1511 "please consider using the driver defaults, "
1512 "and refer to up-to-date thinkpad-acpi "
1516 HOTKEY_CONFIG_CRITICAL_START
1517 for (i = 0; i < 32; i++) {
1519 /* enable in firmware mask only keys not in NVRAM
1520 * mode, but enable the key in the cached hotkey_mask
1521 * regardless of mode, or the key will end up
1522 * disabled by hotkey_mask_get() */
1523 if (!acpi_evalf(hkey_handle,
1524 NULL, "MHKM", "vdd", i + 1,
1525 !!((mask & ~hotkey_source_mask) & m))) {
1529 hotkey_mask = (hotkey_mask & ~m) | (mask & m);
1532 HOTKEY_CONFIG_CRITICAL_END
1534 /* hotkey_mask_get must be called unconditionally below */
1535 if (!hotkey_mask_get() && !rc &&
1536 (hotkey_mask & ~hotkey_source_mask) !=
1537 (mask & ~hotkey_source_mask)) {
1538 printk(TPACPI_NOTICE
1539 "requested hot key mask 0x%08x, but "
1540 "firmware forced it to 0x%08x\n",
1544 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1545 HOTKEY_CONFIG_CRITICAL_START
1546 hotkey_mask = mask & hotkey_source_mask;
1547 HOTKEY_CONFIG_CRITICAL_END
1549 if (hotkey_mask != mask) {
1550 printk(TPACPI_NOTICE
1551 "requested hot key mask 0x%08x, "
1552 "forced to 0x%08x (NVRAM poll mask is "
1553 "0x%08x): no firmware mask support\n",
1554 mask, hotkey_mask, hotkey_source_mask);
1559 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1565 static int hotkey_status_get(int *status)
1567 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1573 static int hotkey_status_set(bool enable)
1575 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
1581 static void tpacpi_input_send_tabletsw(void)
1585 if (tp_features.hotkey_tablet &&
1586 !hotkey_get_tablet_mode(&state)) {
1587 mutex_lock(&tpacpi_inputdev_send_mutex);
1589 input_report_switch(tpacpi_inputdev,
1590 SW_TABLET_MODE, !!state);
1591 input_sync(tpacpi_inputdev);
1593 mutex_unlock(&tpacpi_inputdev_send_mutex);
1597 static void tpacpi_input_send_key(unsigned int scancode)
1599 unsigned int keycode;
1601 keycode = hotkey_keycode_map[scancode];
1603 if (keycode != KEY_RESERVED) {
1604 mutex_lock(&tpacpi_inputdev_send_mutex);
1606 input_report_key(tpacpi_inputdev, keycode, 1);
1607 if (keycode == KEY_UNKNOWN)
1608 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1610 input_sync(tpacpi_inputdev);
1612 input_report_key(tpacpi_inputdev, keycode, 0);
1613 if (keycode == KEY_UNKNOWN)
1614 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1616 input_sync(tpacpi_inputdev);
1618 mutex_unlock(&tpacpi_inputdev_send_mutex);
1622 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1623 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
1625 static void tpacpi_hotkey_send_key(unsigned int scancode)
1627 tpacpi_input_send_key(scancode);
1628 if (hotkey_report_mode < 2) {
1629 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
1630 0x80, 0x1001 + scancode);
1634 static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
1638 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
1639 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
1640 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
1641 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
1642 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
1643 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
1645 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
1646 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
1647 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
1649 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
1650 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
1651 n->displayexp_toggle =
1652 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
1654 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
1655 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
1656 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
1657 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
1658 n->brightness_toggle =
1659 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
1661 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
1662 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
1663 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
1664 >> TP_NVRAM_POS_LEVEL_VOLUME;
1665 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
1666 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
1670 #define TPACPI_COMPARE_KEY(__scancode, __member) \
1672 if ((mask & (1 << __scancode)) && \
1673 oldn->__member != newn->__member) \
1674 tpacpi_hotkey_send_key(__scancode); \
1677 #define TPACPI_MAY_SEND_KEY(__scancode) \
1678 do { if (mask & (1 << __scancode)) \
1679 tpacpi_hotkey_send_key(__scancode); } while (0)
1681 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
1682 struct tp_nvram_state *newn,
1685 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
1686 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
1687 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
1688 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
1690 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
1692 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
1695 if (oldn->volume_toggle != newn->volume_toggle) {
1696 if (oldn->mute != newn->mute) {
1697 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1699 if (oldn->volume_level > newn->volume_level) {
1700 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1701 } else if (oldn->volume_level < newn->volume_level) {
1702 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1703 } else if (oldn->mute == newn->mute) {
1704 /* repeated key presses that didn't change state */
1706 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1707 } else if (newn->volume_level != 0) {
1708 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1710 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1715 /* handle brightness */
1716 if (oldn->brightness_toggle != newn->brightness_toggle) {
1717 if (oldn->brightness_level < newn->brightness_level) {
1718 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1719 } else if (oldn->brightness_level > newn->brightness_level) {
1720 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1722 /* repeated key presses that didn't change state */
1723 if (newn->brightness_level != 0) {
1724 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1726 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1732 #undef TPACPI_COMPARE_KEY
1733 #undef TPACPI_MAY_SEND_KEY
1735 static int hotkey_kthread(void *data)
1737 struct tp_nvram_state s[2];
1739 unsigned int si, so;
1741 unsigned int change_detector, must_reset;
1743 mutex_lock(&hotkey_thread_mutex);
1745 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
1754 /* Initial state for compares */
1755 mutex_lock(&hotkey_thread_data_mutex);
1756 change_detector = hotkey_config_change;
1757 mask = hotkey_source_mask & hotkey_mask;
1758 mutex_unlock(&hotkey_thread_data_mutex);
1759 hotkey_read_nvram(&s[so], mask);
1761 while (!kthread_should_stop() && hotkey_poll_freq) {
1763 t = 1000/hotkey_poll_freq;
1764 t = msleep_interruptible(t);
1765 if (unlikely(kthread_should_stop()))
1767 must_reset = try_to_freeze();
1768 if (t > 0 && !must_reset)
1771 mutex_lock(&hotkey_thread_data_mutex);
1772 if (must_reset || hotkey_config_change != change_detector) {
1773 /* forget old state on thaw or config change */
1776 change_detector = hotkey_config_change;
1778 mask = hotkey_source_mask & hotkey_mask;
1779 mutex_unlock(&hotkey_thread_data_mutex);
1782 hotkey_read_nvram(&s[si], mask);
1783 if (likely(si != so)) {
1784 hotkey_compare_and_issue_event(&s[so], &s[si],
1794 mutex_unlock(&hotkey_thread_mutex);
1798 static void hotkey_poll_stop_sync(void)
1800 if (tpacpi_hotkey_task) {
1801 if (frozen(tpacpi_hotkey_task) ||
1802 freezing(tpacpi_hotkey_task))
1803 thaw_process(tpacpi_hotkey_task);
1805 kthread_stop(tpacpi_hotkey_task);
1806 tpacpi_hotkey_task = NULL;
1807 mutex_lock(&hotkey_thread_mutex);
1808 /* at this point, the thread did exit */
1809 mutex_unlock(&hotkey_thread_mutex);
1813 /* call with hotkey_mutex held */
1814 static void hotkey_poll_setup(int may_warn)
1816 if ((hotkey_source_mask & hotkey_mask) != 0 &&
1817 hotkey_poll_freq > 0 &&
1818 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
1819 if (!tpacpi_hotkey_task) {
1820 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
1821 NULL, TPACPI_NVRAM_KTHREAD_NAME);
1822 if (IS_ERR(tpacpi_hotkey_task)) {
1823 tpacpi_hotkey_task = NULL;
1825 "could not create kernel thread "
1826 "for hotkey polling\n");
1830 hotkey_poll_stop_sync();
1832 hotkey_source_mask != 0 && hotkey_poll_freq == 0) {
1833 printk(TPACPI_NOTICE
1834 "hot keys 0x%08x require polling, "
1835 "which is currently disabled\n",
1836 hotkey_source_mask);
1841 static void hotkey_poll_setup_safe(int may_warn)
1843 mutex_lock(&hotkey_mutex);
1844 hotkey_poll_setup(may_warn);
1845 mutex_unlock(&hotkey_mutex);
1848 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1850 static void hotkey_poll_setup_safe(int __unused)
1854 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1856 static int hotkey_inputdev_open(struct input_dev *dev)
1858 switch (tpacpi_lifecycle) {
1859 case TPACPI_LIFE_INIT:
1861 * hotkey_init will call hotkey_poll_setup_safe
1862 * at the appropriate moment
1865 case TPACPI_LIFE_EXITING:
1867 case TPACPI_LIFE_RUNNING:
1868 hotkey_poll_setup_safe(0);
1872 /* Should only happen if tpacpi_lifecycle is corrupt */
1877 static void hotkey_inputdev_close(struct input_dev *dev)
1879 /* disable hotkey polling when possible */
1880 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
1881 hotkey_poll_setup_safe(0);
1884 /* sysfs hotkey enable ------------------------------------------------- */
1885 static ssize_t hotkey_enable_show(struct device *dev,
1886 struct device_attribute *attr,
1891 printk_deprecated_attribute("hotkey_enable",
1892 "Hotkey reporting is always enabled");
1894 res = hotkey_status_get(&status);
1898 return snprintf(buf, PAGE_SIZE, "%d\n", status);
1901 static ssize_t hotkey_enable_store(struct device *dev,
1902 struct device_attribute *attr,
1903 const char *buf, size_t count)
1907 printk_deprecated_attribute("hotkey_enable",
1908 "Hotkeys can be disabled through hotkey_mask");
1910 if (parse_strtoul(buf, 1, &t))
1919 static struct device_attribute dev_attr_hotkey_enable =
1920 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
1921 hotkey_enable_show, hotkey_enable_store);
1923 /* sysfs hotkey mask --------------------------------------------------- */
1924 static ssize_t hotkey_mask_show(struct device *dev,
1925 struct device_attribute *attr,
1930 if (mutex_lock_killable(&hotkey_mutex))
1931 return -ERESTARTSYS;
1932 res = hotkey_mask_get();
1933 mutex_unlock(&hotkey_mutex);
1936 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
1939 static ssize_t hotkey_mask_store(struct device *dev,
1940 struct device_attribute *attr,
1941 const char *buf, size_t count)
1946 if (parse_strtoul(buf, 0xffffffffUL, &t))
1949 if (mutex_lock_killable(&hotkey_mutex))
1950 return -ERESTARTSYS;
1952 res = hotkey_mask_set(t);
1954 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1955 hotkey_poll_setup(1);
1958 mutex_unlock(&hotkey_mutex);
1960 return (res) ? res : count;
1963 static struct device_attribute dev_attr_hotkey_mask =
1964 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
1965 hotkey_mask_show, hotkey_mask_store);
1967 /* sysfs hotkey bios_enabled ------------------------------------------- */
1968 static ssize_t hotkey_bios_enabled_show(struct device *dev,
1969 struct device_attribute *attr,
1972 return sprintf(buf, "0\n");
1975 static struct device_attribute dev_attr_hotkey_bios_enabled =
1976 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
1978 /* sysfs hotkey bios_mask ---------------------------------------------- */
1979 static ssize_t hotkey_bios_mask_show(struct device *dev,
1980 struct device_attribute *attr,
1983 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
1986 static struct device_attribute dev_attr_hotkey_bios_mask =
1987 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
1989 /* sysfs hotkey all_mask ----------------------------------------------- */
1990 static ssize_t hotkey_all_mask_show(struct device *dev,
1991 struct device_attribute *attr,
1994 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
1995 hotkey_all_mask | hotkey_source_mask);
1998 static struct device_attribute dev_attr_hotkey_all_mask =
1999 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
2001 /* sysfs hotkey recommended_mask --------------------------------------- */
2002 static ssize_t hotkey_recommended_mask_show(struct device *dev,
2003 struct device_attribute *attr,
2006 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2007 (hotkey_all_mask | hotkey_source_mask)
2008 & ~hotkey_reserved_mask);
2011 static struct device_attribute dev_attr_hotkey_recommended_mask =
2012 __ATTR(hotkey_recommended_mask, S_IRUGO,
2013 hotkey_recommended_mask_show, NULL);
2015 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2017 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
2018 static ssize_t hotkey_source_mask_show(struct device *dev,
2019 struct device_attribute *attr,
2022 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2025 static ssize_t hotkey_source_mask_store(struct device *dev,
2026 struct device_attribute *attr,
2027 const char *buf, size_t count)
2031 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2032 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2035 if (mutex_lock_killable(&hotkey_mutex))
2036 return -ERESTARTSYS;
2038 HOTKEY_CONFIG_CRITICAL_START
2039 hotkey_source_mask = t;
2040 HOTKEY_CONFIG_CRITICAL_END
2042 hotkey_poll_setup(1);
2044 mutex_unlock(&hotkey_mutex);
2049 static struct device_attribute dev_attr_hotkey_source_mask =
2050 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2051 hotkey_source_mask_show, hotkey_source_mask_store);
2053 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2054 static ssize_t hotkey_poll_freq_show(struct device *dev,
2055 struct device_attribute *attr,
2058 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2061 static ssize_t hotkey_poll_freq_store(struct device *dev,
2062 struct device_attribute *attr,
2063 const char *buf, size_t count)
2067 if (parse_strtoul(buf, 25, &t))
2070 if (mutex_lock_killable(&hotkey_mutex))
2071 return -ERESTARTSYS;
2073 hotkey_poll_freq = t;
2075 hotkey_poll_setup(1);
2076 mutex_unlock(&hotkey_mutex);
2081 static struct device_attribute dev_attr_hotkey_poll_freq =
2082 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2083 hotkey_poll_freq_show, hotkey_poll_freq_store);
2085 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2087 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
2088 static ssize_t hotkey_radio_sw_show(struct device *dev,
2089 struct device_attribute *attr,
2093 res = hotkey_get_wlsw(&s);
2097 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2100 static struct device_attribute dev_attr_hotkey_radio_sw =
2101 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2103 static void hotkey_radio_sw_notify_change(void)
2105 if (tp_features.hotkey_wlsw)
2106 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2110 /* sysfs hotkey tablet mode (pollable) --------------------------------- */
2111 static ssize_t hotkey_tablet_mode_show(struct device *dev,
2112 struct device_attribute *attr,
2116 res = hotkey_get_tablet_mode(&s);
2120 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2123 static struct device_attribute dev_attr_hotkey_tablet_mode =
2124 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2126 static void hotkey_tablet_mode_notify_change(void)
2128 if (tp_features.hotkey_tablet)
2129 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2130 "hotkey_tablet_mode");
2133 /* sysfs hotkey report_mode -------------------------------------------- */
2134 static ssize_t hotkey_report_mode_show(struct device *dev,
2135 struct device_attribute *attr,
2138 return snprintf(buf, PAGE_SIZE, "%d\n",
2139 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
2142 static struct device_attribute dev_attr_hotkey_report_mode =
2143 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
2145 /* sysfs wakeup reason (pollable) -------------------------------------- */
2146 static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2147 struct device_attribute *attr,
2150 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2153 static struct device_attribute dev_attr_hotkey_wakeup_reason =
2154 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2156 static void hotkey_wakeup_reason_notify_change(void)
2158 if (tp_features.hotkey_mask)
2159 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2163 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
2164 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2165 struct device_attribute *attr,
2168 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2171 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2172 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2173 hotkey_wakeup_hotunplug_complete_show, NULL);
2175 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
2177 if (tp_features.hotkey_mask)
2178 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2179 "wakeup_hotunplug_complete");
2182 /* --------------------------------------------------------------------- */
2184 static struct attribute *hotkey_attributes[] __initdata = {
2185 &dev_attr_hotkey_enable.attr,
2186 &dev_attr_hotkey_bios_enabled.attr,
2187 &dev_attr_hotkey_report_mode.attr,
2188 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2189 &dev_attr_hotkey_mask.attr,
2190 &dev_attr_hotkey_all_mask.attr,
2191 &dev_attr_hotkey_recommended_mask.attr,
2192 &dev_attr_hotkey_source_mask.attr,
2193 &dev_attr_hotkey_poll_freq.attr,
2197 static struct attribute *hotkey_mask_attributes[] __initdata = {
2198 &dev_attr_hotkey_bios_mask.attr,
2199 #ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2200 &dev_attr_hotkey_mask.attr,
2201 &dev_attr_hotkey_all_mask.attr,
2202 &dev_attr_hotkey_recommended_mask.attr,
2204 &dev_attr_hotkey_wakeup_reason.attr,
2205 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
2208 static void bluetooth_update_rfk(void);
2209 static void wan_update_rfk(void);
2210 static void uwb_update_rfk(void);
2211 static void tpacpi_send_radiosw_update(void)
2215 /* Sync these BEFORE sending any rfkill events */
2216 if (tp_features.bluetooth)
2217 bluetooth_update_rfk();
2218 if (tp_features.wan)
2220 if (tp_features.uwb)
2223 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
2224 mutex_lock(&tpacpi_inputdev_send_mutex);
2226 input_report_switch(tpacpi_inputdev,
2227 SW_RFKILL_ALL, !!wlsw);
2228 input_sync(tpacpi_inputdev);
2230 mutex_unlock(&tpacpi_inputdev_send_mutex);
2232 hotkey_radio_sw_notify_change();
2235 static void hotkey_exit(void)
2237 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2238 hotkey_poll_stop_sync();
2241 if (hotkey_dev_attributes)
2242 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2244 kfree(hotkey_keycode_map);
2246 if (tp_features.hotkey) {
2247 dbg_printk(TPACPI_DBG_EXIT,
2248 "restoring original hot key mask\n");
2249 /* no short-circuit boolean operator below! */
2250 if ((hotkey_mask_set(hotkey_orig_mask) |
2251 hotkey_status_set(false)) != 0)
2253 "failed to restore hot key mask "
2254 "to BIOS defaults\n");
2258 static int __init hotkey_init(struct ibm_init_struct *iibm)
2260 /* Requirements for changing the default keymaps:
2262 * 1. Many of the keys are mapped to KEY_RESERVED for very
2263 * good reasons. Do not change them unless you have deep
2264 * knowledge on the IBM and Lenovo ThinkPad firmware for
2265 * the various ThinkPad models. The driver behaves
2266 * differently for KEY_RESERVED: such keys have their
2267 * hot key mask *unset* in mask_recommended, and also
2268 * in the initial hot key mask programmed into the
2269 * firmware at driver load time, which means the firm-
2270 * ware may react very differently if you change them to
2273 * 2. You must be subscribed to the linux-thinkpad and
2274 * ibm-acpi-devel mailing lists, and you should read the
2275 * list archives since 2007 if you want to change the
2276 * keymaps. This requirement exists so that you will
2277 * know the past history of problems with the thinkpad-
2278 * acpi driver keymaps, and also that you will be
2279 * listening to any bug reports;
2281 * 3. Do not send thinkpad-acpi specific patches directly to
2282 * for merging, *ever*. Send them to the linux-acpi
2283 * mailinglist for comments. Merging is to be done only
2284 * through acpi-test and the ACPI maintainer.
2286 * If the above is too much to ask, don't change the keymap.
2287 * Ask the thinkpad-acpi maintainer to do it, instead.
2289 static u16 ibm_keycode_map[] __initdata = {
2290 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2291 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
2292 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2293 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
2295 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
2296 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2297 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2298 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
2300 /* brightness: firmware always reacts to them, unless
2301 * X.org did some tricks in the radeon BIOS scratch
2302 * registers of *some* models */
2303 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
2304 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
2306 /* Thinklight: firmware always react to it */
2307 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
2309 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2310 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
2312 /* Volume: firmware always react to it and reprograms
2313 * the built-in *extra* mixer. Never map it to control
2314 * another mixer by default. */
2315 KEY_RESERVED, /* 0x14: VOLUME UP */
2316 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2317 KEY_RESERVED, /* 0x16: MUTE */
2319 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2321 /* (assignments unknown, please report if found) */
2322 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2323 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2325 static u16 lenovo_keycode_map[] __initdata = {
2326 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2327 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2328 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2329 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
2331 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
2332 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2333 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2334 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
2336 /* These either have to go through ACPI video, or
2337 * act like in the IBM ThinkPads, so don't ever
2338 * enable them by default */
2339 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
2340 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
2342 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
2344 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2345 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
2347 /* Volume: z60/z61, T60 (BIOS version?): firmware always
2348 * react to it and reprograms the built-in *extra* mixer.
2349 * Never map it to control another mixer by default.
2351 * T60?, T61, R60?, R61: firmware and EC tries to send
2352 * these over the regular keyboard, so these are no-ops,
2353 * but there are still weird bugs re. MUTE, so do not
2354 * change unless you get test reports from all Lenovo
2355 * models. May cause the BIOS to interfere with the
2358 KEY_RESERVED, /* 0x14: VOLUME UP */
2359 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2360 KEY_RESERVED, /* 0x16: MUTE */
2362 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2364 /* (assignments unknown, please report if found) */
2365 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2366 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2369 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
2370 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
2371 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
2377 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
2379 BUG_ON(!tpacpi_inputdev);
2380 BUG_ON(tpacpi_inputdev->open != NULL ||
2381 tpacpi_inputdev->close != NULL);
2383 TPACPI_ACPIHANDLE_INIT(hkey);
2384 mutex_init(&hotkey_mutex);
2386 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2387 mutex_init(&hotkey_thread_mutex);
2388 mutex_init(&hotkey_thread_data_mutex);
2391 /* hotkey not supported on 570 */
2392 tp_features.hotkey = hkey_handle != NULL;
2394 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
2395 str_supported(tp_features.hotkey));
2397 if (!tp_features.hotkey)
2400 tpacpi_disable_brightness_delay();
2402 hotkey_dev_attributes = create_attr_set(13, NULL);
2403 if (!hotkey_dev_attributes)
2405 res = add_many_to_attr_set(hotkey_dev_attributes,
2407 ARRAY_SIZE(hotkey_attributes));
2411 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2412 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
2413 for HKEY interface version 0x100 */
2414 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
2415 if ((hkeyv >> 8) != 1) {
2416 printk(TPACPI_ERR "unknown version of the "
2417 "HKEY interface: 0x%x\n", hkeyv);
2418 printk(TPACPI_ERR "please report this to %s\n",
2422 * MHKV 0x100 in A31, R40, R40e,
2423 * T4x, X31, and later
2425 tp_features.hotkey_mask = 1;
2429 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
2430 str_supported(tp_features.hotkey_mask));
2432 if (tp_features.hotkey_mask) {
2433 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
2436 "missing MHKA handler, "
2437 "please report this to %s\n",
2439 /* FN+F12, FN+F4, FN+F3 */
2440 hotkey_all_mask = 0x080cU;
2444 /* hotkey_source_mask *must* be zero for
2445 * the first hotkey_mask_get */
2446 if (tp_features.hotkey_mask) {
2447 res = hotkey_mask_get();
2451 hotkey_orig_mask = hotkey_mask;
2452 res = add_many_to_attr_set(
2453 hotkey_dev_attributes,
2454 hotkey_mask_attributes,
2455 ARRAY_SIZE(hotkey_mask_attributes));
2460 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2461 if (tp_features.hotkey_mask) {
2462 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
2465 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
2468 vdbg_printk(TPACPI_DBG_INIT,
2469 "hotkey source mask 0x%08x, polling freq %d\n",
2470 hotkey_source_mask, hotkey_poll_freq);
2473 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
2475 tp_features.hotkey_wlsw = 1;
2477 "radio switch emulation enabled\n");
2480 /* Not all thinkpads have a hardware radio switch */
2481 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
2482 tp_features.hotkey_wlsw = 1;
2484 "radio switch found; radios are %s\n",
2485 enabled(status, 0));
2487 if (tp_features.hotkey_wlsw)
2488 res = add_to_attr_set(hotkey_dev_attributes,
2489 &dev_attr_hotkey_radio_sw.attr);
2491 /* For X41t, X60t, X61t Tablets... */
2492 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
2493 tp_features.hotkey_tablet = 1;
2495 "possible tablet mode switch found; "
2496 "ThinkPad in %s mode\n",
2497 (status & TP_HOTKEY_TABLET_MASK)?
2498 "tablet" : "laptop");
2499 res = add_to_attr_set(hotkey_dev_attributes,
2500 &dev_attr_hotkey_tablet_mode.attr);
2504 res = register_attr_set_with_sysfs(
2505 hotkey_dev_attributes,
2506 &tpacpi_pdev->dev.kobj);
2510 /* Set up key map */
2512 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
2514 if (!hotkey_keycode_map) {
2516 "failed to allocate memory for key map\n");
2521 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
2522 dbg_printk(TPACPI_DBG_INIT,
2523 "using Lenovo default hot key map\n");
2524 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
2525 TPACPI_HOTKEY_MAP_SIZE);
2527 dbg_printk(TPACPI_DBG_INIT,
2528 "using IBM default hot key map\n");
2529 memcpy(hotkey_keycode_map, &ibm_keycode_map,
2530 TPACPI_HOTKEY_MAP_SIZE);
2533 set_bit(EV_KEY, tpacpi_inputdev->evbit);
2534 set_bit(EV_MSC, tpacpi_inputdev->evbit);
2535 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
2536 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
2537 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
2538 tpacpi_inputdev->keycode = hotkey_keycode_map;
2539 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
2540 if (hotkey_keycode_map[i] != KEY_RESERVED) {
2541 set_bit(hotkey_keycode_map[i],
2542 tpacpi_inputdev->keybit);
2544 if (i < sizeof(hotkey_reserved_mask)*8)
2545 hotkey_reserved_mask |= 1 << i;
2549 if (tp_features.hotkey_wlsw) {
2550 set_bit(EV_SW, tpacpi_inputdev->evbit);
2551 set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit);
2553 if (tp_features.hotkey_tablet) {
2554 set_bit(EV_SW, tpacpi_inputdev->evbit);
2555 set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit);
2558 /* Do not issue duplicate brightness change events to
2560 if (!tp_features.bright_acpimode)
2561 /* update bright_acpimode... */
2562 tpacpi_check_std_acpi_brightness_support();
2564 if (tp_features.bright_acpimode) {
2566 "This ThinkPad has standard ACPI backlight "
2567 "brightness control, supported by the ACPI "
2569 printk(TPACPI_NOTICE
2570 "Disabling thinkpad-acpi brightness events "
2573 /* The hotkey_reserved_mask change below is not
2574 * necessary while the keys are at KEY_RESERVED in the
2575 * default map, but better safe than sorry, leave it
2576 * here as a marker of what we have to do, especially
2577 * when we finally become able to set this at runtime
2578 * on response to X.org requests */
2579 hotkey_reserved_mask |=
2580 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
2581 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
2584 dbg_printk(TPACPI_DBG_INIT, "enabling hot key handling\n");
2585 res = hotkey_status_set(true);
2590 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
2591 & ~hotkey_reserved_mask)
2592 | hotkey_orig_mask);
2593 if (res < 0 && res != -ENXIO) {
2598 dbg_printk(TPACPI_DBG_INIT,
2599 "legacy hot key reporting over procfs %s\n",
2600 (hotkey_report_mode < 2) ?
2601 "enabled" : "disabled");
2603 tpacpi_inputdev->open = &hotkey_inputdev_open;
2604 tpacpi_inputdev->close = &hotkey_inputdev_close;
2606 hotkey_poll_setup_safe(1);
2607 tpacpi_send_radiosw_update();
2608 tpacpi_input_send_tabletsw();
2613 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2614 hotkey_dev_attributes = NULL;
2616 return (res < 0)? res : 1;
2619 static bool hotkey_notify_hotkey(const u32 hkey,
2621 bool *ignore_acpi_ev)
2623 /* 0x1000-0x1FFF: key presses */
2624 unsigned int scancode = hkey & 0xfff;
2625 *send_acpi_ev = true;
2626 *ignore_acpi_ev = false;
2628 if (scancode > 0 && scancode < 0x21) {
2630 if (!(hotkey_source_mask & (1 << scancode))) {
2631 tpacpi_input_send_key(scancode);
2632 *send_acpi_ev = false;
2634 *ignore_acpi_ev = true;
2641 static bool hotkey_notify_wakeup(const u32 hkey,
2643 bool *ignore_acpi_ev)
2645 /* 0x2000-0x2FFF: Wakeup reason */
2646 *send_acpi_ev = true;
2647 *ignore_acpi_ev = false;
2650 case 0x2304: /* suspend, undock */
2651 case 0x2404: /* hibernation, undock */
2652 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
2653 *ignore_acpi_ev = true;
2656 case 0x2305: /* suspend, bay eject */
2657 case 0x2405: /* hibernation, bay eject */
2658 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
2659 *ignore_acpi_ev = true;
2662 case 0x2313: /* Battery on critical low level (S3) */
2663 case 0x2413: /* Battery on critical low level (S4) */
2665 "EMERGENCY WAKEUP: battery almost empty\n");
2666 /* how to auto-heal: */
2667 /* 2313: woke up from S3, go to S4/S5 */
2668 /* 2413: woke up from S4, go to S5 */
2675 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
2677 "woke up due to a hot-unplug "
2679 hotkey_wakeup_reason_notify_change();
2684 static bool hotkey_notify_usrevent(const u32 hkey,
2686 bool *ignore_acpi_ev)
2688 /* 0x5000-0x5FFF: human interface helpers */
2689 *send_acpi_ev = true;
2690 *ignore_acpi_ev = false;
2693 case 0x5010: /* Lenovo new BIOS: brightness changed */
2694 case 0x500b: /* X61t: tablet pen inserted into bay */
2695 case 0x500c: /* X61t: tablet pen removed from bay */
2698 case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
2699 case 0x500a: /* X41t-X61t: swivel down (normal mode) */
2700 tpacpi_input_send_tabletsw();
2701 hotkey_tablet_mode_notify_change();
2702 *send_acpi_ev = false;
2707 /* LID switch events. Do not propagate */
2708 *ignore_acpi_ev = true;
2716 static bool hotkey_notify_thermal(const u32 hkey,
2718 bool *ignore_acpi_ev)
2720 /* 0x6000-0x6FFF: thermal alarms */
2721 *send_acpi_ev = true;
2722 *ignore_acpi_ev = false;
2727 "THERMAL ALARM: battery is too hot!\n");
2728 /* recommended action: warn user through gui */
2732 "THERMAL EMERGENCY: battery is extremely hot!\n");
2733 /* recommended action: immediate sleep/hibernate */
2738 "a sensor reports something is too hot!\n");
2739 /* recommended action: warn user through gui, that */
2740 /* some internal component is too hot */
2744 "THERMAL EMERGENCY: "
2745 "a sensor reports something is extremely hot!\n");
2746 /* recommended action: immediate sleep/hibernate */
2750 "EC reports that Thermal Table has changed\n");
2751 /* recommended action: do nothing, we don't have
2752 * Lenovo ATM information */
2756 "THERMAL ALERT: unknown thermal alarm received\n");
2761 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
2765 bool ignore_acpi_ev;
2768 if (event != 0x80) {
2770 "unknown HKEY notification event %d\n", event);
2771 /* forward it to userspace, maybe it knows how to handle it */
2772 acpi_bus_generate_netlink_event(
2773 ibm->acpi->device->pnp.device_class,
2774 dev_name(&ibm->acpi->device->dev),
2780 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
2781 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
2790 send_acpi_ev = true;
2791 ignore_acpi_ev = false;
2793 switch (hkey >> 12) {
2795 /* 0x1000-0x1FFF: key presses */
2796 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
2800 /* 0x2000-0x2FFF: Wakeup reason */
2801 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
2805 /* 0x3000-0x3FFF: bay-related wakeups */
2806 if (hkey == 0x3003) {
2807 hotkey_autosleep_ack = 1;
2810 hotkey_wakeup_hotunplug_complete_notify_change();
2817 /* 0x4000-0x4FFF: dock-related wakeups */
2818 if (hkey == 0x4003) {
2819 hotkey_autosleep_ack = 1;
2822 hotkey_wakeup_hotunplug_complete_notify_change();
2829 /* 0x5000-0x5FFF: human interface helpers */
2830 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
2834 /* 0x6000-0x6FFF: thermal alarms */
2835 known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev,
2839 /* 0x7000-0x7FFF: misc */
2840 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
2841 tpacpi_send_radiosw_update();
2846 /* fallthrough to default */
2851 printk(TPACPI_NOTICE
2852 "unhandled HKEY event 0x%04x\n", hkey);
2853 printk(TPACPI_NOTICE
2854 "please report the conditions when this "
2855 "event happened to %s\n", TPACPI_MAIL);
2859 if (!ignore_acpi_ev &&
2860 (send_acpi_ev || hotkey_report_mode < 2)) {
2861 acpi_bus_generate_proc_event(ibm->acpi->device,
2865 /* netlink events */
2866 if (!ignore_acpi_ev && send_acpi_ev) {
2867 acpi_bus_generate_netlink_event(
2868 ibm->acpi->device->pnp.device_class,
2869 dev_name(&ibm->acpi->device->dev),
2875 static void hotkey_suspend(pm_message_t state)
2877 /* Do these on suspend, we get the events on early resume! */
2878 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
2879 hotkey_autosleep_ack = 0;
2882 static void hotkey_resume(void)
2884 tpacpi_disable_brightness_delay();
2886 if (hotkey_mask_get())
2888 "error while trying to read hot key mask "
2890 tpacpi_send_radiosw_update();
2891 hotkey_tablet_mode_notify_change();
2892 hotkey_wakeup_reason_notify_change();
2893 hotkey_wakeup_hotunplug_complete_notify_change();
2894 hotkey_poll_setup_safe(0);
2897 /* procfs -------------------------------------------------------------- */
2898 static int hotkey_read(char *p)
2903 if (!tp_features.hotkey) {
2904 len += sprintf(p + len, "status:\t\tnot supported\n");
2908 if (mutex_lock_killable(&hotkey_mutex))
2909 return -ERESTARTSYS;
2910 res = hotkey_status_get(&status);
2912 res = hotkey_mask_get();
2913 mutex_unlock(&hotkey_mutex);
2917 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
2918 if (tp_features.hotkey_mask) {
2919 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
2920 len += sprintf(p + len,
2921 "commands:\tenable, disable, reset, <mask>\n");
2923 len += sprintf(p + len, "mask:\t\tnot supported\n");
2924 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
2930 static void hotkey_enabledisable_warn(void)
2932 tpacpi_log_usertask("procfs hotkey enable/disable");
2934 "hotkey enable/disable functionality has been "
2935 "removed from the driver. Hotkeys are always enabled.\n");
2938 static int hotkey_write(char *buf)
2944 if (!tp_features.hotkey)
2947 if (mutex_lock_killable(&hotkey_mutex))
2948 return -ERESTARTSYS;
2953 while ((cmd = next_cmd(&buf))) {
2954 if (strlencmp(cmd, "enable") == 0) {
2955 hotkey_enabledisable_warn();
2956 } else if (strlencmp(cmd, "disable") == 0) {
2957 hotkey_enabledisable_warn();
2959 } else if (strlencmp(cmd, "reset") == 0) {
2960 mask = hotkey_orig_mask;
2961 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
2963 } else if (sscanf(cmd, "%x", &mask) == 1) {
2970 if (!res && mask != hotkey_mask)
2971 res = hotkey_mask_set(mask);
2974 mutex_unlock(&hotkey_mutex);
2978 static const struct acpi_device_id ibm_htk_device_ids[] = {
2979 {TPACPI_ACPI_HKEY_HID, 0},
2983 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
2984 .hid = ibm_htk_device_ids,
2985 .notify = hotkey_notify,
2986 .handle = &hkey_handle,
2987 .type = ACPI_DEVICE_NOTIFY,
2990 static struct ibm_struct hotkey_driver_data = {
2992 .read = hotkey_read,
2993 .write = hotkey_write,
2994 .exit = hotkey_exit,
2995 .resume = hotkey_resume,
2996 .suspend = hotkey_suspend,
2997 .acpi = &ibm_hotkey_acpidriver,
3000 /*************************************************************************
3001 * Bluetooth subdriver
3005 /* ACPI GBDC/SBDC bits */
3006 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
3007 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
3008 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
3013 /* ACPI \BLTH commands */
3014 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
3015 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
3016 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
3017 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
3018 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
3021 static struct rfkill *tpacpi_bluetooth_rfkill;
3023 static void bluetooth_suspend(pm_message_t state)
3025 /* Try to make sure radio will resume powered off */
3026 acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3027 TP_ACPI_BLTH_PWR_OFF_ON_RESUME);
3030 static int bluetooth_get_radiosw(void)
3034 if (!tp_features.bluetooth)
3037 /* WLSW overrides bluetooth in firmware/hardware, reflect that */
3038 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
3039 return RFKILL_STATE_HARD_BLOCKED;
3041 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3042 if (dbg_bluetoothemul)
3043 return (tpacpi_bluetooth_emulstate) ?
3044 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3047 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
3050 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
3051 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3054 static void bluetooth_update_rfk(void)
3058 if (!tpacpi_bluetooth_rfkill)
3061 status = bluetooth_get_radiosw();
3064 rfkill_force_state(tpacpi_bluetooth_rfkill, status);
3067 static int bluetooth_set_radiosw(int radio_on, int update_rfk)
3071 if (!tp_features.bluetooth)
3074 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3075 * reason to risk weird behaviour. */
3076 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3080 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3081 if (dbg_bluetoothemul) {
3082 tpacpi_bluetooth_emulstate = !!radio_on;
3084 bluetooth_update_rfk();
3089 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
3091 status = TP_ACPI_BLUETOOTH_RADIOSSW;
3094 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
3098 bluetooth_update_rfk();
3103 /* sysfs bluetooth enable ---------------------------------------------- */
3104 static ssize_t bluetooth_enable_show(struct device *dev,
3105 struct device_attribute *attr,
3110 printk_deprecated_rfkill_attribute("bluetooth_enable");
3112 status = bluetooth_get_radiosw();
3116 return snprintf(buf, PAGE_SIZE, "%d\n",
3117 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
3120 static ssize_t bluetooth_enable_store(struct device *dev,
3121 struct device_attribute *attr,
3122 const char *buf, size_t count)
3127 printk_deprecated_rfkill_attribute("bluetooth_enable");
3129 if (parse_strtoul(buf, 1, &t))
3132 res = bluetooth_set_radiosw(t, 1);
3134 return (res) ? res : count;
3137 static struct device_attribute dev_attr_bluetooth_enable =
3138 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
3139 bluetooth_enable_show, bluetooth_enable_store);
3141 /* --------------------------------------------------------------------- */
3143 static struct attribute *bluetooth_attributes[] = {
3144 &dev_attr_bluetooth_enable.attr,
3148 static const struct attribute_group bluetooth_attr_group = {
3149 .attrs = bluetooth_attributes,
3152 static int tpacpi_bluetooth_rfk_get(void *data, enum rfkill_state *state)
3154 int bts = bluetooth_get_radiosw();
3163 static int tpacpi_bluetooth_rfk_set(void *data, enum rfkill_state state)
3165 return bluetooth_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3168 static void bluetooth_shutdown(void)
3170 /* Order firmware to save current state to NVRAM */
3171 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3172 TP_ACPI_BLTH_SAVE_STATE))
3173 printk(TPACPI_NOTICE
3174 "failed to save bluetooth state to NVRAM\n");
3177 static void bluetooth_exit(void)
3179 bluetooth_shutdown();
3181 if (tpacpi_bluetooth_rfkill)
3182 rfkill_unregister(tpacpi_bluetooth_rfkill);
3184 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3185 &bluetooth_attr_group);
3188 static int __init bluetooth_init(struct ibm_init_struct *iibm)
3193 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
3195 TPACPI_ACPIHANDLE_INIT(hkey);
3197 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3198 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
3199 tp_features.bluetooth = hkey_handle &&
3200 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
3202 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
3203 str_supported(tp_features.bluetooth),
3206 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3207 if (dbg_bluetoothemul) {
3208 tp_features.bluetooth = 1;
3210 "bluetooth switch emulation enabled\n");
3213 if (tp_features.bluetooth &&
3214 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
3215 /* no bluetooth hardware present in system */
3216 tp_features.bluetooth = 0;
3217 dbg_printk(TPACPI_DBG_INIT,
3218 "bluetooth hardware not installed\n");
3221 if (!tp_features.bluetooth)
3224 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3225 &bluetooth_attr_group);
3229 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
3230 &tpacpi_bluetooth_rfkill,
3231 RFKILL_TYPE_BLUETOOTH,
3232 "tpacpi_bluetooth_sw",
3234 tpacpi_bluetooth_rfk_set,
3235 tpacpi_bluetooth_rfk_get);
3244 /* procfs -------------------------------------------------------------- */
3245 static int bluetooth_read(char *p)
3248 int status = bluetooth_get_radiosw();
3250 if (!tp_features.bluetooth)
3251 len += sprintf(p + len, "status:\t\tnot supported\n");
3253 len += sprintf(p + len, "status:\t\t%s\n",
3254 (status == RFKILL_STATE_UNBLOCKED) ?
3255 "enabled" : "disabled");
3256 len += sprintf(p + len, "commands:\tenable, disable\n");
3262 static int bluetooth_write(char *buf)
3266 if (!tp_features.bluetooth)
3269 while ((cmd = next_cmd(&buf))) {
3270 if (strlencmp(cmd, "enable") == 0) {
3271 bluetooth_set_radiosw(1, 1);
3272 } else if (strlencmp(cmd, "disable") == 0) {
3273 bluetooth_set_radiosw(0, 1);
3281 static struct ibm_struct bluetooth_driver_data = {
3282 .name = "bluetooth",
3283 .read = bluetooth_read,
3284 .write = bluetooth_write,
3285 .exit = bluetooth_exit,
3286 .suspend = bluetooth_suspend,
3287 .shutdown = bluetooth_shutdown,
3290 /*************************************************************************
3295 /* ACPI GWAN/SWAN bits */
3296 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
3297 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
3298 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
3302 static struct rfkill *tpacpi_wan_rfkill;
3304 static void wan_suspend(pm_message_t state)
3306 /* Try to make sure radio will resume powered off */
3307 acpi_evalf(NULL, NULL, "\\WGSV", "qvd",
3308 TP_ACPI_WGSV_PWR_OFF_ON_RESUME);
3311 static int wan_get_radiosw(void)
3315 if (!tp_features.wan)
3318 /* WLSW overrides WWAN in firmware/hardware, reflect that */
3319 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
3320 return RFKILL_STATE_HARD_BLOCKED;
3322 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3324 return (tpacpi_wwan_emulstate) ?
3325 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3328 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
3331 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
3332 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3335 static void wan_update_rfk(void)
3339 if (!tpacpi_wan_rfkill)
3342 status = wan_get_radiosw();
3345 rfkill_force_state(tpacpi_wan_rfkill, status);
3348 static int wan_set_radiosw(int radio_on, int update_rfk)
3352 if (!tp_features.wan)
3355 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3356 * reason to risk weird behaviour. */
3357 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3361 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3363 tpacpi_wwan_emulstate = !!radio_on;
3370 /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
3372 status = TP_ACPI_WANCARD_RADIOSSW;
3375 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
3384 /* sysfs wan enable ---------------------------------------------------- */
3385 static ssize_t wan_enable_show(struct device *dev,
3386 struct device_attribute *attr,
3391 printk_deprecated_rfkill_attribute("wwan_enable");
3393 status = wan_get_radiosw();
3397 return snprintf(buf, PAGE_SIZE, "%d\n",
3398 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
3401 static ssize_t wan_enable_store(struct device *dev,
3402 struct device_attribute *attr,
3403 const char *buf, size_t count)
3408 printk_deprecated_rfkill_attribute("wwan_enable");
3410 if (parse_strtoul(buf, 1, &t))
3413 res = wan_set_radiosw(t, 1);
3415 return (res) ? res : count;
3418 static struct device_attribute dev_attr_wan_enable =
3419 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
3420 wan_enable_show, wan_enable_store);
3422 /* --------------------------------------------------------------------- */
3424 static struct attribute *wan_attributes[] = {
3425 &dev_attr_wan_enable.attr,
3429 static const struct attribute_group wan_attr_group = {
3430 .attrs = wan_attributes,
3433 static int tpacpi_wan_rfk_get(void *data, enum rfkill_state *state)
3435 int wans = wan_get_radiosw();
3444 static int tpacpi_wan_rfk_set(void *data, enum rfkill_state state)
3446 return wan_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3449 static void wan_shutdown(void)
3451 /* Order firmware to save current state to NVRAM */
3452 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
3453 TP_ACPI_WGSV_SAVE_STATE))
3454 printk(TPACPI_NOTICE
3455 "failed to save WWAN state to NVRAM\n");
3458 static void wan_exit(void)
3462 if (tpacpi_wan_rfkill)
3463 rfkill_unregister(tpacpi_wan_rfkill);
3465 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3469 static int __init wan_init(struct ibm_init_struct *iibm)
3474 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
3476 TPACPI_ACPIHANDLE_INIT(hkey);
3478 tp_features.wan = hkey_handle &&
3479 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
3481 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
3482 str_supported(tp_features.wan),
3485 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3487 tp_features.wan = 1;
3489 "wwan switch emulation enabled\n");
3492 if (tp_features.wan &&
3493 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
3494 /* no wan hardware present in system */
3495 tp_features.wan = 0;
3496 dbg_printk(TPACPI_DBG_INIT,
3497 "wan hardware not installed\n");
3500 if (!tp_features.wan)
3503 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3508 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
3514 tpacpi_wan_rfk_get);
3523 /* procfs -------------------------------------------------------------- */
3524 static int wan_read(char *p)
3527 int status = wan_get_radiosw();
3529 if (!tp_features.wan)
3530 len += sprintf(p + len, "status:\t\tnot supported\n");
3532 len += sprintf(p + len, "status:\t\t%s\n",
3533 (status == RFKILL_STATE_UNBLOCKED) ?
3534 "enabled" : "disabled");
3535 len += sprintf(p + len, "commands:\tenable, disable\n");
3541 static int wan_write(char *buf)
3545 if (!tp_features.wan)
3548 while ((cmd = next_cmd(&buf))) {
3549 if (strlencmp(cmd, "enable") == 0) {
3550 wan_set_radiosw(1, 1);
3551 } else if (strlencmp(cmd, "disable") == 0) {
3552 wan_set_radiosw(0, 1);
3560 static struct ibm_struct wan_driver_data = {
3565 .suspend = wan_suspend,
3566 .shutdown = wan_shutdown,
3569 /*************************************************************************
3574 /* ACPI GUWB/SUWB bits */
3575 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
3576 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
3579 static struct rfkill *tpacpi_uwb_rfkill;
3581 static int uwb_get_radiosw(void)
3585 if (!tp_features.uwb)
3588 /* WLSW overrides UWB in firmware/hardware, reflect that */
3589 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
3590 return RFKILL_STATE_HARD_BLOCKED;
3592 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3594 return (tpacpi_uwb_emulstate) ?
3595 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3598 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
3601 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
3602 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3605 static void uwb_update_rfk(void)
3609 if (!tpacpi_uwb_rfkill)
3612 status = uwb_get_radiosw();
3615 rfkill_force_state(tpacpi_uwb_rfkill, status);
3618 static int uwb_set_radiosw(int radio_on, int update_rfk)
3622 if (!tp_features.uwb)
3625 /* WLSW overrides UWB in firmware/hardware, but there is no
3626 * reason to risk weird behaviour. */
3627 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3631 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3633 tpacpi_uwb_emulstate = !!radio_on;
3640 status = (radio_on) ? TP_ACPI_UWB_RADIOSSW : 0;
3641 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
3650 /* --------------------------------------------------------------------- */
3652 static int tpacpi_uwb_rfk_get(void *data, enum rfkill_state *state)
3654 int uwbs = uwb_get_radiosw();
3663 static int tpacpi_uwb_rfk_set(void *data, enum rfkill_state state)
3665 return uwb_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3668 static void uwb_exit(void)
3670 if (tpacpi_uwb_rfkill)
3671 rfkill_unregister(tpacpi_uwb_rfkill);
3674 static int __init uwb_init(struct ibm_init_struct *iibm)
3679 vdbg_printk(TPACPI_DBG_INIT, "initializing uwb subdriver\n");
3681 TPACPI_ACPIHANDLE_INIT(hkey);
3683 tp_features.uwb = hkey_handle &&
3684 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
3686 vdbg_printk(TPACPI_DBG_INIT, "uwb is %s, status 0x%02x\n",
3687 str_supported(tp_features.uwb),
3690 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3692 tp_features.uwb = 1;
3694 "uwb switch emulation enabled\n");
3697 if (tp_features.uwb &&
3698 !(status & TP_ACPI_UWB_HWPRESENT)) {
3699 /* no uwb hardware present in system */
3700 tp_features.uwb = 0;
3701 dbg_printk(TPACPI_DBG_INIT,
3702 "uwb hardware not installed\n");
3705 if (!tp_features.uwb)
3708 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
3714 tpacpi_uwb_rfk_get);
3719 static struct ibm_struct uwb_driver_data = {
3722 .flags.experimental = 1,
3725 /*************************************************************************
3729 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
3731 enum video_access_mode {
3732 TPACPI_VIDEO_NONE = 0,
3733 TPACPI_VIDEO_570, /* 570 */
3734 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
3735 TPACPI_VIDEO_NEW, /* all others */
3738 enum { /* video status flags, based on VIDEO_570 */
3739 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
3740 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
3741 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
3744 enum { /* TPACPI_VIDEO_570 constants */
3745 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
3746 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
3747 * video_status_flags */
3748 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
3749 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
3752 static enum video_access_mode video_supported;
3753 static int video_orig_autosw;
3755 static int video_autosw_get(void);
3756 static int video_autosw_set(int enable);
3758 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
3760 static int __init video_init(struct ibm_init_struct *iibm)
3764 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
3766 TPACPI_ACPIHANDLE_INIT(vid);
3767 TPACPI_ACPIHANDLE_INIT(vid2);
3769 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
3770 /* G41, assume IVGA doesn't change */
3771 vid_handle = vid2_handle;
3774 /* video switching not supported on R30, R31 */
3775 video_supported = TPACPI_VIDEO_NONE;
3776 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
3778 video_supported = TPACPI_VIDEO_570;
3779 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
3780 /* 600e/x, 770e, 770x */
3781 video_supported = TPACPI_VIDEO_770;
3784 video_supported = TPACPI_VIDEO_NEW;
3786 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
3787 str_supported(video_supported != TPACPI_VIDEO_NONE),
3790 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
3793 static void video_exit(void)
3795 dbg_printk(TPACPI_DBG_EXIT,
3796 "restoring original video autoswitch mode\n");
3797 if (video_autosw_set(video_orig_autosw))
3798 printk(TPACPI_ERR "error while trying to restore original "
3799 "video autoswitch mode\n");
3802 static int video_outputsw_get(void)
3807 switch (video_supported) {
3808 case TPACPI_VIDEO_570:
3809 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
3810 TP_ACPI_VIDEO_570_PHSCMD))
3812 status = i & TP_ACPI_VIDEO_570_PHSMASK;
3814 case TPACPI_VIDEO_770:
3815 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
3818 status |= TP_ACPI_VIDEO_S_LCD;
3819 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
3822 status |= TP_ACPI_VIDEO_S_CRT;
3824 case TPACPI_VIDEO_NEW:
3825 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
3826 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
3829 status |= TP_ACPI_VIDEO_S_CRT;
3831 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
3832 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
3835 status |= TP_ACPI_VIDEO_S_LCD;
3836 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
3839 status |= TP_ACPI_VIDEO_S_DVI;
3848 static int video_outputsw_set(int status)
3853 switch (video_supported) {
3854 case TPACPI_VIDEO_570:
3855 res = acpi_evalf(NULL, NULL,
3856 "\\_SB.PHS2", "vdd",
3857 TP_ACPI_VIDEO_570_PHS2CMD,
3858 status | TP_ACPI_VIDEO_570_PHS2SET);
3860 case TPACPI_VIDEO_770:
3861 autosw = video_autosw_get();
3865 res = video_autosw_set(1);
3868 res = acpi_evalf(vid_handle, NULL,
3869 "ASWT", "vdd", status * 0x100, 0);
3870 if (!autosw && video_autosw_set(autosw)) {
3872 "video auto-switch left enabled due to error\n");
3876 case TPACPI_VIDEO_NEW:
3877 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
3878 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
3884 return (res)? 0 : -EIO;
3887 static int video_autosw_get(void)
3891 switch (video_supported) {
3892 case TPACPI_VIDEO_570:
3893 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
3896 case TPACPI_VIDEO_770:
3897 case TPACPI_VIDEO_NEW:
3898 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
3908 static int video_autosw_set(int enable)
3910 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
3915 static int video_outputsw_cycle(void)
3917 int autosw = video_autosw_get();
3923 switch (video_supported) {
3924 case TPACPI_VIDEO_570:
3925 res = video_autosw_set(1);
3928 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
3930 case TPACPI_VIDEO_770:
3931 case TPACPI_VIDEO_NEW:
3932 res = video_autosw_set(1);
3935 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
3940 if (!autosw && video_autosw_set(autosw)) {
3942 "video auto-switch left enabled due to error\n");
3946 return (res)? 0 : -EIO;
3949 static int video_expand_toggle(void)
3951 switch (video_supported) {
3952 case TPACPI_VIDEO_570:
3953 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
3955 case TPACPI_VIDEO_770:
3956 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
3958 case TPACPI_VIDEO_NEW:
3959 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
3967 static int video_read(char *p)
3972 if (video_supported == TPACPI_VIDEO_NONE) {
3973 len += sprintf(p + len, "status:\t\tnot supported\n");
3977 status = video_outputsw_get();
3981 autosw = video_autosw_get();
3985 len += sprintf(p + len, "status:\t\tsupported\n");
3986 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
3987 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
3988 if (video_supported == TPACPI_VIDEO_NEW)
3989 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
3990 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
3991 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
3992 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
3993 if (video_supported == TPACPI_VIDEO_NEW)
3994 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
3995 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
3996 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
4001 static int video_write(char *buf)
4004 int enable, disable, status;
4007 if (video_supported == TPACPI_VIDEO_NONE)
4013 while ((cmd = next_cmd(&buf))) {
4014 if (strlencmp(cmd, "lcd_enable") == 0) {
4015 enable |= TP_ACPI_VIDEO_S_LCD;
4016 } else if (strlencmp(cmd, "lcd_disable") == 0) {
4017 disable |= TP_ACPI_VIDEO_S_LCD;
4018 } else if (strlencmp(cmd, "crt_enable") == 0) {
4019 enable |= TP_ACPI_VIDEO_S_CRT;
4020 } else if (strlencmp(cmd, "crt_disable") == 0) {
4021 disable |= TP_ACPI_VIDEO_S_CRT;
4022 } else if (video_supported == TPACPI_VIDEO_NEW &&
4023 strlencmp(cmd, "dvi_enable") == 0) {
4024 enable |= TP_ACPI_VIDEO_S_DVI;
4025 } else if (video_supported == TPACPI_VIDEO_NEW &&
4026 strlencmp(cmd, "dvi_disable") == 0) {
4027 disable |= TP_ACPI_VIDEO_S_DVI;
4028 } else if (strlencmp(cmd, "auto_enable") == 0) {
4029 res = video_autosw_set(1);
4032 } else if (strlencmp(cmd, "auto_disable") == 0) {
4033 res = video_autosw_set(0);
4036 } else if (strlencmp(cmd, "video_switch") == 0) {
4037 res = video_outputsw_cycle();
4040 } else if (strlencmp(cmd, "expand_toggle") == 0) {
4041 res = video_expand_toggle();
4048 if (enable || disable) {
4049 status = video_outputsw_get();
4052 res = video_outputsw_set((status & ~disable) | enable);
4060 static struct ibm_struct video_driver_data = {
4063 .write = video_write,
4067 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4069 /*************************************************************************
4070 * Light (thinklight) subdriver
4073 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4074 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
4076 static int light_get_status(void)
4080 if (tp_features.light_status) {
4081 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4089 static int light_set_status(int status)
4093 if (tp_features.light) {
4095 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
4097 TP_CMOS_THINKLIGHT_ON :
4098 TP_CMOS_THINKLIGHT_OFF);
4100 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
4103 return (rc)? 0 : -EIO;
4109 static void light_set_status_worker(struct work_struct *work)
4111 struct tpacpi_led_classdev *data =
4112 container_of(work, struct tpacpi_led_classdev, work);
4114 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4115 light_set_status((data->new_brightness != LED_OFF));
4118 static void light_sysfs_set(struct led_classdev *led_cdev,
4119 enum led_brightness brightness)
4121 struct tpacpi_led_classdev *data =
4122 container_of(led_cdev,
4123 struct tpacpi_led_classdev,
4125 data->new_brightness = brightness;
4126 queue_work(tpacpi_wq, &data->work);
4129 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4131 return (light_get_status() == 1)? LED_FULL : LED_OFF;
4134 static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4136 .name = "tpacpi::thinklight",
4137 .brightness_set = &light_sysfs_set,
4138 .brightness_get = &light_sysfs_get,
4142 static int __init light_init(struct ibm_init_struct *iibm)
4146 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4148 TPACPI_ACPIHANDLE_INIT(ledb);
4149 TPACPI_ACPIHANDLE_INIT(lght);
4150 TPACPI_ACPIHANDLE_INIT(cmos);
4151 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
4153 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
4154 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
4156 if (tp_features.light)
4157 /* light status not supported on
4158 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
4159 tp_features.light_status =
4160 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
4162 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4163 str_supported(tp_features.light),
4164 str_supported(tp_features.light_status));
4166 if (!tp_features.light)
4169 rc = led_classdev_register(&tpacpi_pdev->dev,
4170 &tpacpi_led_thinklight.led_classdev);
4173 tp_features.light = 0;
4174 tp_features.light_status = 0;
4182 static void light_exit(void)
4184 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
4185 if (work_pending(&tpacpi_led_thinklight.work))
4186 flush_workqueue(tpacpi_wq);
4189 static int light_read(char *p)
4194 if (!tp_features.light) {
4195 len += sprintf(p + len, "status:\t\tnot supported\n");
4196 } else if (!tp_features.light_status) {
4197 len += sprintf(p + len, "status:\t\tunknown\n");
4198 len += sprintf(p + len, "commands:\ton, off\n");
4200 status = light_get_status();
4203 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
4204 len += sprintf(p + len, "commands:\ton, off\n");
4210 static int light_write(char *buf)
4215 if (!tp_features.light)
4218 while ((cmd = next_cmd(&buf))) {
4219 if (strlencmp(cmd, "on") == 0) {
4221 } else if (strlencmp(cmd, "off") == 0) {
4227 return light_set_status(newstatus);
4230 static struct ibm_struct light_driver_data = {
4233 .write = light_write,
4237 /*************************************************************************
4241 #ifdef CONFIG_THINKPAD_ACPI_DOCK
4243 static void dock_notify(struct ibm_struct *ibm, u32 event);
4244 static int dock_read(char *p);
4245 static int dock_write(char *buf);
4247 TPACPI_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
4248 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
4249 "\\_SB.PCI0.PCI1.DOCK", /* all others */
4250 "\\_SB.PCI.ISA.SLCE", /* 570 */
4251 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
4253 /* don't list other alternatives as we install a notify handler on the 570 */
4254 TPACPI_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
4256 static const struct acpi_device_id ibm_pci_device_ids[] = {
4257 {PCI_ROOT_HID_STRING, 0},
4261 static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
4263 .notify = dock_notify,
4264 .handle = &dock_handle,
4265 .type = ACPI_SYSTEM_NOTIFY,
4268 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
4269 * We just use it to get notifications of dock hotplug
4270 * in very old thinkpads */
4271 .hid = ibm_pci_device_ids,
4272 .notify = dock_notify,
4273 .handle = &pci_handle,
4274 .type = ACPI_SYSTEM_NOTIFY,
4278 static struct ibm_struct dock_driver_data[2] = {
4282 .write = dock_write,
4283 .acpi = &ibm_dock_acpidriver[0],
4287 .acpi = &ibm_dock_acpidriver[1],
4291 #define dock_docked() (_sta(dock_handle) & 1)
4293 static int __init dock_init(struct ibm_init_struct *iibm)
4295 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
4297 TPACPI_ACPIHANDLE_INIT(dock);
4299 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
4300 str_supported(dock_handle != NULL));
4302 return (dock_handle)? 0 : 1;
4305 static int __init dock_init2(struct ibm_init_struct *iibm)
4309 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
4311 if (dock_driver_data[0].flags.acpi_driver_registered &&
4312 dock_driver_data[0].flags.acpi_notify_installed) {
4313 TPACPI_ACPIHANDLE_INIT(pci);
4314 dock2_needed = (pci_handle != NULL);
4315 vdbg_printk(TPACPI_DBG_INIT,
4316 "dock PCI handler for the TP 570 is %s\n",
4317 str_supported(dock2_needed));
4319 vdbg_printk(TPACPI_DBG_INIT,
4320 "dock subdriver part 2 not required\n");
4324 return (dock2_needed)? 0 : 1;
4327 static void dock_notify(struct ibm_struct *ibm, u32 event)
4329 int docked = dock_docked();
4330 int pci = ibm->acpi->hid && ibm->acpi->device &&
4331 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
4334 if (event == 1 && !pci) /* 570 */
4335 data = 1; /* button */
4336 else if (event == 1 && pci) /* 570 */
4337 data = 3; /* dock */
4338 else if (event == 3 && docked)
4339 data = 1; /* button */
4340 else if (event == 3 && !docked)
4341 data = 2; /* undock */
4342 else if (event == 0 && docked)
4343 data = 3; /* dock */
4345 printk(TPACPI_ERR "unknown dock event %d, status %d\n",
4346 event, _sta(dock_handle));
4347 data = 0; /* unknown */
4349 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
4350 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
4351 dev_name(&ibm->acpi->device->dev),
4355 static int dock_read(char *p)
4358 int docked = dock_docked();
4361 len += sprintf(p + len, "status:\t\tnot supported\n");
4363 len += sprintf(p + len, "status:\t\tundocked\n");
4365 len += sprintf(p + len, "status:\t\tdocked\n");
4366 len += sprintf(p + len, "commands:\tdock, undock\n");
4372 static int dock_write(char *buf)
4379 while ((cmd = next_cmd(&buf))) {
4380 if (strlencmp(cmd, "undock") == 0) {
4381 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
4382 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
4384 } else if (strlencmp(cmd, "dock") == 0) {
4385 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
4394 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
4396 /*************************************************************************
4400 #ifdef CONFIG_THINKPAD_ACPI_BAY
4402 TPACPI_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
4403 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
4404 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
4405 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
4406 ); /* A21e, R30, R31 */
4407 TPACPI_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
4408 "_EJ0", /* all others */
4409 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
4410 TPACPI_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
4411 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
4413 TPACPI_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
4417 static int __init bay_init(struct ibm_init_struct *iibm)
4419 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
4421 TPACPI_ACPIHANDLE_INIT(bay);
4423 TPACPI_ACPIHANDLE_INIT(bay_ej);
4424 TPACPI_ACPIHANDLE_INIT(bay2);
4426 TPACPI_ACPIHANDLE_INIT(bay2_ej);
4428 tp_features.bay_status = bay_handle &&
4429 acpi_evalf(bay_handle, NULL, "_STA", "qv");
4430 tp_features.bay_status2 = bay2_handle &&
4431 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
4433 tp_features.bay_eject = bay_handle && bay_ej_handle &&
4434 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
4435 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
4436 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
4438 vdbg_printk(TPACPI_DBG_INIT,
4439 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
4440 str_supported(tp_features.bay_status),
4441 str_supported(tp_features.bay_eject),
4442 str_supported(tp_features.bay_status2),
4443 str_supported(tp_features.bay_eject2));
4445 return (tp_features.bay_status || tp_features.bay_eject ||
4446 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
4449 static void bay_notify(struct ibm_struct *ibm, u32 event)
4451 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
4452 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
4453 dev_name(&ibm->acpi->device->dev),
4457 #define bay_occupied(b) (_sta(b##_handle) & 1)
4459 static int bay_read(char *p)
4462 int occupied = bay_occupied(bay);
4463 int occupied2 = bay_occupied(bay2);
4466 len += sprintf(p + len, "status:\t\t%s\n",
4467 tp_features.bay_status ?
4468 (occupied ? "occupied" : "unoccupied") :
4470 if (tp_features.bay_status2)
4471 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
4472 "occupied" : "unoccupied");
4474 eject = tp_features.bay_eject && occupied;
4475 eject2 = tp_features.bay_eject2 && occupied2;
4477 if (eject && eject2)
4478 len += sprintf(p + len, "commands:\teject, eject2\n");
4480 len += sprintf(p + len, "commands:\teject\n");
4482 len += sprintf(p + len, "commands:\teject2\n");
4487 static int bay_write(char *buf)
4491 if (!tp_features.bay_eject && !tp_features.bay_eject2)
4494 while ((cmd = next_cmd(&buf))) {
4495 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
4496 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
4498 } else if (tp_features.bay_eject2 &&
4499 strlencmp(cmd, "eject2") == 0) {
4500 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
4509 static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
4510 .notify = bay_notify,
4511 .handle = &bay_handle,
4512 .type = ACPI_SYSTEM_NOTIFY,
4515 static struct ibm_struct bay_driver_data = {
4519 .acpi = &ibm_bay_acpidriver,
4522 #endif /* CONFIG_THINKPAD_ACPI_BAY */
4524 /*************************************************************************
4528 /* sysfs cmos_command -------------------------------------------------- */
4529 static ssize_t cmos_command_store(struct device *dev,
4530 struct device_attribute *attr,
4531 const char *buf, size_t count)
4533 unsigned long cmos_cmd;
4536 if (parse_strtoul(buf, 21, &cmos_cmd))
4539 res = issue_thinkpad_cmos_command(cmos_cmd);
4540 return (res)? res : count;
4543 static struct device_attribute dev_attr_cmos_command =
4544 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
4546 /* --------------------------------------------------------------------- */
4548 static int __init cmos_init(struct ibm_init_struct *iibm)
4552 vdbg_printk(TPACPI_DBG_INIT,
4553 "initializing cmos commands subdriver\n");
4555 TPACPI_ACPIHANDLE_INIT(cmos);
4557 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
4558 str_supported(cmos_handle != NULL));
4560 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4564 return (cmos_handle)? 0 : 1;
4567 static void cmos_exit(void)
4569 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4572 static int cmos_read(char *p)
4576 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4577 R30, R31, T20-22, X20-21 */
4579 len += sprintf(p + len, "status:\t\tnot supported\n");
4581 len += sprintf(p + len, "status:\t\tsupported\n");
4582 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
4588 static int cmos_write(char *buf)
4593 while ((cmd = next_cmd(&buf))) {
4594 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
4595 cmos_cmd >= 0 && cmos_cmd <= 21) {
4600 res = issue_thinkpad_cmos_command(cmos_cmd);
4608 static struct ibm_struct cmos_driver_data = {
4611 .write = cmos_write,
4615 /*************************************************************************
4619 enum led_access_mode {
4620 TPACPI_LED_NONE = 0,
4621 TPACPI_LED_570, /* 570 */
4622 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4623 TPACPI_LED_NEW, /* all others */
4626 enum { /* For TPACPI_LED_OLD */
4627 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
4628 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
4629 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
4638 static enum led_access_mode led_supported;
4640 TPACPI_HANDLE(led, ec, "SLED", /* 570 */
4641 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
4642 /* T20-22, X20-21 */
4643 "LED", /* all others */
4646 #define TPACPI_LED_NUMLEDS 8
4647 static struct tpacpi_led_classdev *tpacpi_leds;
4648 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
4649 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
4650 /* there's a limit of 19 chars + NULL before 2.6.26 */
4652 "tpacpi:orange:batt",
4653 "tpacpi:green:batt",
4654 "tpacpi::dock_active",
4655 "tpacpi::bay_active",
4656 "tpacpi::dock_batt",
4657 "tpacpi::unknown_led",
4660 #define TPACPI_SAFE_LEDS 0x0081U
4662 static inline bool tpacpi_is_led_restricted(const unsigned int led)
4664 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
4667 return (TPACPI_SAFE_LEDS & (1 << led)) == 0;
4671 static int led_get_status(const unsigned int led)
4674 enum led_status_t led_s;
4676 switch (led_supported) {
4677 case TPACPI_LED_570:
4678 if (!acpi_evalf(ec_handle,
4679 &status, "GLED", "dd", 1 << led))
4681 led_s = (status == 0)?
4686 tpacpi_led_state_cache[led] = led_s;
4695 static int led_set_status(const unsigned int led,
4696 const enum led_status_t ledstatus)
4698 /* off, on, blink. Index is led_status_t */
4699 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
4700 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4704 switch (led_supported) {
4705 case TPACPI_LED_570:
4707 if (unlikely(led > 7))
4709 if (unlikely(tpacpi_is_led_restricted(led)))
4711 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4712 (1 << led), led_sled_arg1[ledstatus]))
4715 case TPACPI_LED_OLD:
4716 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
4717 if (unlikely(led > 7))
4719 if (unlikely(tpacpi_is_led_restricted(led)))
4721 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
4723 rc = ec_write(TPACPI_LED_EC_HLBL,
4724 (ledstatus == TPACPI_LED_BLINK) << led);
4726 rc = ec_write(TPACPI_LED_EC_HLCL,
4727 (ledstatus != TPACPI_LED_OFF) << led);
4729 case TPACPI_LED_NEW:
4731 if (unlikely(led >= TPACPI_LED_NUMLEDS))
4733 if (unlikely(tpacpi_is_led_restricted(led)))
4735 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4736 led, led_led_arg1[ledstatus]))
4744 tpacpi_led_state_cache[led] = ledstatus;
4749 static void led_sysfs_set_status(unsigned int led,
4750 enum led_brightness brightness)
4753 (brightness == LED_OFF) ?
4755 (tpacpi_led_state_cache[led] == TPACPI_LED_BLINK) ?
4756 TPACPI_LED_BLINK : TPACPI_LED_ON);
4759 static void led_set_status_worker(struct work_struct *work)
4761 struct tpacpi_led_classdev *data =
4762 container_of(work, struct tpacpi_led_classdev, work);
4764 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4765 led_sysfs_set_status(data->led, data->new_brightness);
4768 static void led_sysfs_set(struct led_classdev *led_cdev,
4769 enum led_brightness brightness)
4771 struct tpacpi_led_classdev *data = container_of(led_cdev,
4772 struct tpacpi_led_classdev, led_classdev);
4774 data->new_brightness = brightness;
4775 queue_work(tpacpi_wq, &data->work);
4778 static int led_sysfs_blink_set(struct led_classdev *led_cdev,
4779 unsigned long *delay_on, unsigned long *delay_off)
4781 struct tpacpi_led_classdev *data = container_of(led_cdev,
4782 struct tpacpi_led_classdev, led_classdev);
4784 /* Can we choose the flash rate? */
4785 if (*delay_on == 0 && *delay_off == 0) {
4786 /* yes. set them to the hardware blink rate (1 Hz) */
4787 *delay_on = 500; /* ms */
4788 *delay_off = 500; /* ms */
4789 } else if ((*delay_on != 500) || (*delay_off != 500))
4792 data->new_brightness = TPACPI_LED_BLINK;
4793 queue_work(tpacpi_wq, &data->work);
4798 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
4802 struct tpacpi_led_classdev *data = container_of(led_cdev,
4803 struct tpacpi_led_classdev, led_classdev);
4805 rc = led_get_status(data->led);
4807 if (rc == TPACPI_LED_OFF || rc < 0)
4808 rc = LED_OFF; /* no error handling in led class :( */
4815 static void led_exit(void)
4819 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4820 if (tpacpi_leds[i].led_classdev.name)
4821 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
4827 static int __init tpacpi_init_led(unsigned int led)
4831 tpacpi_leds[led].led = led;
4833 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
4834 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
4835 if (led_supported == TPACPI_LED_570)
4836 tpacpi_leds[led].led_classdev.brightness_get =
4839 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
4841 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
4843 rc = led_classdev_register(&tpacpi_pdev->dev,
4844 &tpacpi_leds[led].led_classdev);
4846 tpacpi_leds[led].led_classdev.name = NULL;
4851 static int __init led_init(struct ibm_init_struct *iibm)
4856 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
4858 TPACPI_ACPIHANDLE_INIT(led);
4861 /* led not supported on R30, R31 */
4862 led_supported = TPACPI_LED_NONE;
4863 else if (strlencmp(led_path, "SLED") == 0)
4865 led_supported = TPACPI_LED_570;
4866 else if (strlencmp(led_path, "SYSL") == 0)
4867 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4868 led_supported = TPACPI_LED_OLD;
4871 led_supported = TPACPI_LED_NEW;
4873 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
4874 str_supported(led_supported), led_supported);
4876 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
4879 printk(TPACPI_ERR "Out of memory for LED data\n");
4883 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4884 if (!tpacpi_is_led_restricted(i)) {
4885 rc = tpacpi_init_led(i);
4893 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
4894 if (led_supported != TPACPI_LED_NONE)
4895 printk(TPACPI_NOTICE
4896 "warning: userspace override of important "
4897 "firmware LEDs is enabled\n");
4899 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
4902 #define str_led_status(s) \
4903 ((s) == TPACPI_LED_OFF ? "off" : \
4904 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
4906 static int led_read(char *p)
4910 if (!led_supported) {
4911 len += sprintf(p + len, "status:\t\tnot supported\n");
4914 len += sprintf(p + len, "status:\t\tsupported\n");
4916 if (led_supported == TPACPI_LED_570) {
4919 for (i = 0; i < 8; i++) {
4920 status = led_get_status(i);
4923 len += sprintf(p + len, "%d:\t\t%s\n",
4924 i, str_led_status(status));
4928 len += sprintf(p + len, "commands:\t"
4929 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
4934 static int led_write(char *buf)
4938 enum led_status_t s;
4943 while ((cmd = next_cmd(&buf))) {
4944 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
4947 if (strstr(cmd, "off")) {
4949 } else if (strstr(cmd, "on")) {
4951 } else if (strstr(cmd, "blink")) {
4952 s = TPACPI_LED_BLINK;
4957 rc = led_set_status(led, s);
4965 static struct ibm_struct led_driver_data = {
4972 /*************************************************************************
4976 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
4978 static int __init beep_init(struct ibm_init_struct *iibm)
4980 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
4982 TPACPI_ACPIHANDLE_INIT(beep);
4984 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
4985 str_supported(beep_handle != NULL));
4987 return (beep_handle)? 0 : 1;
4990 static int beep_read(char *p)
4995 len += sprintf(p + len, "status:\t\tnot supported\n");
4997 len += sprintf(p + len, "status:\t\tsupported\n");
4998 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
5004 static int beep_write(char *buf)
5012 while ((cmd = next_cmd(&buf))) {
5013 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
5014 beep_cmd >= 0 && beep_cmd <= 17) {
5018 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
5025 static struct ibm_struct beep_driver_data = {
5028 .write = beep_write,
5031 /*************************************************************************
5035 enum thermal_access_mode {
5036 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5037 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5038 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5039 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5040 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5043 enum { /* TPACPI_THERMAL_TPEC_* */
5044 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5045 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5046 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
5049 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5050 struct ibm_thermal_sensors_struct {
5051 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5054 static enum thermal_access_mode thermal_read_mode;
5056 /* idx is zero-based */
5057 static int thermal_get_sensor(int idx, s32 *value)
5063 t = TP_EC_THERMAL_TMP0;
5065 switch (thermal_read_mode) {
5066 #if TPACPI_MAX_THERMAL_SENSORS >= 16
5067 case TPACPI_THERMAL_TPEC_16:
5068 if (idx >= 8 && idx <= 15) {
5069 t = TP_EC_THERMAL_TMP8;
5074 case TPACPI_THERMAL_TPEC_8:
5076 if (!acpi_ec_read(t + idx, &tmp))
5078 *value = tmp * 1000;
5083 case TPACPI_THERMAL_ACPI_UPDT:
5085 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5086 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5088 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5090 *value = (t - 2732) * 100;
5095 case TPACPI_THERMAL_ACPI_TMP07:
5097 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5098 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5100 if (t > 127 || t < -127)
5101 t = TP_EC_THERMAL_TMP_NA;
5107 case TPACPI_THERMAL_NONE:
5115 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5126 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5129 for (i = 0 ; i < n; i++) {
5130 res = thermal_get_sensor(i, &s->temp[i]);
5138 /* sysfs temp##_input -------------------------------------------------- */
5140 static ssize_t thermal_temp_input_show(struct device *dev,
5141 struct device_attribute *attr,
5144 struct sensor_device_attribute *sensor_attr =
5145 to_sensor_dev_attr(attr);
5146 int idx = sensor_attr->index;
5150 res = thermal_get_sensor(idx, &value);
5153 if (value == TP_EC_THERMAL_TMP_NA * 1000)
5156 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5159 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
5160 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5161 thermal_temp_input_show, NULL, _idxB)
5163 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5164 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5165 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5166 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5167 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5168 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5169 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5170 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5171 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5172 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5173 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5174 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5175 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5176 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5177 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5178 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5179 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5182 #define THERMAL_ATTRS(X) \
5183 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5185 static struct attribute *thermal_temp_input_attr[] = {
5205 static const struct attribute_group thermal_temp_input16_group = {
5206 .attrs = thermal_temp_input_attr
5209 static const struct attribute_group thermal_temp_input8_group = {
5210 .attrs = &thermal_temp_input_attr[8]
5213 #undef THERMAL_SENSOR_ATTR_TEMP
5214 #undef THERMAL_ATTRS
5216 /* --------------------------------------------------------------------- */
5218 static int __init thermal_init(struct ibm_init_struct *iibm)
5225 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5227 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
5229 if (thinkpad_id.ec_model) {
5231 * Direct EC access mode: sensors at registers
5232 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5233 * non-implemented, thermal sensors return 0x80 when
5238 for (i = 0; i < 8; i++) {
5239 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
5245 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
5253 /* This is sheer paranoia, but we handle it anyway */
5256 "ThinkPad ACPI EC access misbehaving, "
5257 "falling back to ACPI TMPx access "
5259 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
5262 "ThinkPad ACPI EC access misbehaving, "
5263 "disabling thermal sensors access\n");
5264 thermal_read_mode = TPACPI_THERMAL_NONE;
5269 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
5271 } else if (acpi_tmp7) {
5272 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
5273 /* 600e/x, 770e, 770x */
5274 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
5276 /* Standard ACPI TMPx access, max 8 sensors */
5277 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
5280 /* temperatures not supported on 570, G4x, R30, R31, R32 */
5281 thermal_read_mode = TPACPI_THERMAL_NONE;
5284 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5285 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5288 switch (thermal_read_mode) {
5289 case TPACPI_THERMAL_TPEC_16:
5290 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
5291 &thermal_temp_input16_group);
5295 case TPACPI_THERMAL_TPEC_8:
5296 case TPACPI_THERMAL_ACPI_TMP07:
5297 case TPACPI_THERMAL_ACPI_UPDT:
5298 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
5299 &thermal_temp_input8_group);
5303 case TPACPI_THERMAL_NONE:
5311 static void thermal_exit(void)
5313 switch (thermal_read_mode) {
5314 case TPACPI_THERMAL_TPEC_16:
5315 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
5316 &thermal_temp_input16_group);
5318 case TPACPI_THERMAL_TPEC_8:
5319 case TPACPI_THERMAL_ACPI_TMP07:
5320 case TPACPI_THERMAL_ACPI_UPDT:
5321 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
5322 &thermal_temp_input16_group);
5324 case TPACPI_THERMAL_NONE:
5330 static int thermal_read(char *p)
5334 struct ibm_thermal_sensors_struct t;
5336 n = thermal_get_sensors(&t);
5337 if (unlikely(n < 0))
5340 len += sprintf(p + len, "temperatures:\t");
5343 for (i = 0; i < (n - 1); i++)
5344 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
5345 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
5347 len += sprintf(p + len, "not supported\n");
5352 static struct ibm_struct thermal_driver_data = {
5354 .read = thermal_read,
5355 .exit = thermal_exit,
5358 /*************************************************************************
5362 static u8 ecdump_regs[256];
5364 static int ecdump_read(char *p)
5370 len += sprintf(p + len, "EC "
5371 " +00 +01 +02 +03 +04 +05 +06 +07"
5372 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5373 for (i = 0; i < 256; i += 16) {
5374 len += sprintf(p + len, "EC 0x%02x:", i);
5375 for (j = 0; j < 16; j++) {
5376 if (!acpi_ec_read(i + j, &v))
5378 if (v != ecdump_regs[i + j])
5379 len += sprintf(p + len, " *%02x", v);
5381 len += sprintf(p + len, " %02x", v);
5382 ecdump_regs[i + j] = v;
5384 len += sprintf(p + len, "\n");
5389 /* These are way too dangerous to advertise openly... */
5391 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
5392 " (<offset> is 00-ff, <value> is 00-ff)\n");
5393 len += sprintf(p + len, "commands:\t0x<offset> <value> "
5394 " (<offset> is 00-ff, <value> is 0-255)\n");
5399 static int ecdump_write(char *buf)
5404 while ((cmd = next_cmd(&buf))) {
5405 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
5407 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
5411 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
5412 if (!acpi_ec_write(i, v))
5421 static struct ibm_struct ecdump_driver_data = {
5423 .read = ecdump_read,
5424 .write = ecdump_write,
5425 .flags.experimental = 1,
5428 /*************************************************************************
5429 * Backlight/brightness subdriver
5432 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5435 TP_EC_BACKLIGHT = 0x31,
5437 /* TP_EC_BACKLIGHT bitmasks */
5438 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
5439 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
5440 TP_EC_BACKLIGHT_MAPSW = 0x20,
5443 static struct backlight_device *ibm_backlight_device;
5444 static int brightness_mode;
5445 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
5447 static struct mutex brightness_mutex;
5450 * ThinkPads can read brightness from two places: EC 0x31, or
5451 * CMOS NVRAM byte 0x5E, bits 0-3.
5453 * EC 0x31 has the following layout
5454 * Bit 7: unknown function
5455 * Bit 6: unknown function
5456 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5457 * Bit 4: must be set to zero to avoid problems
5458 * Bit 3-0: backlight brightness level
5460 * brightness_get_raw returns status data in the EC 0x31 layout
5462 static int brightness_get_raw(int *status)
5464 u8 lec = 0, lcmos = 0, level = 0;
5466 if (brightness_mode & 1) {
5467 if (!acpi_ec_read(TP_EC_BACKLIGHT, &lec))
5469 level = lec & TP_EC_BACKLIGHT_LVLMSK;
5471 if (brightness_mode & 2) {
5472 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
5473 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5474 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
5475 lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07;
5479 if (brightness_mode == 3) {
5480 *status = lec; /* Prefer EC, CMOS is just a backing store */
5481 lec &= TP_EC_BACKLIGHT_LVLMSK;
5483 tp_warned.bright_cmos_ec_unsync = 0;
5485 if (!tp_warned.bright_cmos_ec_unsync) {
5487 "CMOS NVRAM (%u) and EC (%u) do not "
5488 "agree on display brightness level\n",
5489 (unsigned int) lcmos,
5490 (unsigned int) lec);
5491 tp_warned.bright_cmos_ec_unsync = 1;
5502 /* May return EINTR which can always be mapped to ERESTARTSYS */
5503 static int brightness_set(int value)
5505 int cmos_cmd, inc, i, res;
5509 if (value > ((tp_features.bright_16levels)? 15 : 7) ||
5513 res = mutex_lock_killable(&brightness_mutex);
5517 res = brightness_get_raw(¤t_value);
5521 command_bits = current_value & TP_EC_BACKLIGHT_CMDMSK;
5522 current_value &= TP_EC_BACKLIGHT_LVLMSK;
5524 cmos_cmd = value > current_value ?
5525 TP_CMOS_BRIGHTNESS_UP :
5526 TP_CMOS_BRIGHTNESS_DOWN;
5527 inc = (value > current_value)? 1 : -1;
5530 for (i = current_value; i != value; i += inc) {
5531 if ((brightness_mode & 2) &&
5532 issue_thinkpad_cmos_command(cmos_cmd)) {
5536 if ((brightness_mode & 1) &&
5537 !acpi_ec_write(TP_EC_BACKLIGHT,
5538 (i + inc) | command_bits)) {
5545 mutex_unlock(&brightness_mutex);
5549 /* sysfs backlight class ----------------------------------------------- */
5551 static int brightness_update_status(struct backlight_device *bd)
5553 /* it is the backlight class's job (caller) to handle
5554 * EINTR and other errors properly */
5555 return brightness_set(
5556 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
5557 bd->props.power == FB_BLANK_UNBLANK) ?
5558 bd->props.brightness : 0);
5561 static int brightness_get(struct backlight_device *bd)
5565 res = brightness_get_raw(&status);
5567 return 0; /* FIXME: teach backlight about error handling */
5569 return status & TP_EC_BACKLIGHT_LVLMSK;
5572 static struct backlight_ops ibm_backlight_data = {
5573 .get_brightness = brightness_get,
5574 .update_status = brightness_update_status,
5577 /* --------------------------------------------------------------------- */
5579 static int __init brightness_init(struct ibm_init_struct *iibm)
5583 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
5585 mutex_init(&brightness_mutex);
5588 * We always attempt to detect acpi support, so as to switch
5589 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
5590 * going to publish a backlight interface
5592 b = tpacpi_check_std_acpi_brightness_support();
5595 if (acpi_video_backlight_support()) {
5596 if (brightness_enable > 1) {
5597 printk(TPACPI_NOTICE
5598 "Standard ACPI backlight interface "
5599 "available, not loading native one.\n");
5601 } else if (brightness_enable == 1) {
5602 printk(TPACPI_NOTICE
5603 "Backlight control force enabled, even if standard "
5604 "ACPI backlight interface is available\n");
5607 if (brightness_enable > 1) {
5608 printk(TPACPI_NOTICE
5609 "Standard ACPI backlight interface not "
5610 "available, thinkpad_acpi native "
5611 "brightness control enabled\n");
5616 if (!brightness_enable) {
5617 dbg_printk(TPACPI_DBG_INIT,
5618 "brightness support disabled by "
5619 "module parameter\n");
5625 "Unsupported brightness interface, "
5626 "please contact %s\n", TPACPI_MAIL);
5630 tp_features.bright_16levels = 1;
5632 if (!brightness_mode) {
5633 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
5634 brightness_mode = 2;
5636 brightness_mode = 3;
5638 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
5642 if (brightness_mode > 3)
5645 if (brightness_get_raw(&b) < 0)
5648 if (tp_features.bright_16levels)
5650 "detected a 16-level brightness capable ThinkPad\n");
5652 ibm_backlight_device = backlight_device_register(
5653 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
5654 &ibm_backlight_data);
5655 if (IS_ERR(ibm_backlight_device)) {
5656 printk(TPACPI_ERR "Could not register backlight device\n");
5657 return PTR_ERR(ibm_backlight_device);
5659 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
5661 ibm_backlight_device->props.max_brightness =
5662 (tp_features.bright_16levels)? 15 : 7;
5663 ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
5664 backlight_update_status(ibm_backlight_device);
5669 static void brightness_exit(void)
5671 if (ibm_backlight_device) {
5672 vdbg_printk(TPACPI_DBG_EXIT,
5673 "calling backlight_device_unregister()\n");
5674 backlight_device_unregister(ibm_backlight_device);
5678 static int brightness_read(char *p)
5683 level = brightness_get(NULL);
5685 len += sprintf(p + len, "level:\t\tunreadable\n");
5687 len += sprintf(p + len, "level:\t\t%d\n", level);
5688 len += sprintf(p + len, "commands:\tup, down\n");
5689 len += sprintf(p + len, "commands:\tlevel <level>"
5690 " (<level> is 0-%d)\n",
5691 (tp_features.bright_16levels) ? 15 : 7);
5697 static int brightness_write(char *buf)
5702 int max_level = (tp_features.bright_16levels) ? 15 : 7;
5704 level = brightness_get(NULL);
5708 while ((cmd = next_cmd(&buf))) {
5709 if (strlencmp(cmd, "up") == 0) {
5710 if (level < max_level)
5712 } else if (strlencmp(cmd, "down") == 0) {
5715 } else if (sscanf(cmd, "level %d", &level) == 1 &&
5716 level >= 0 && level <= max_level) {
5723 * Now we know what the final level should be, so we try to set it.
5724 * Doing it this way makes the syscall restartable in case of EINTR
5726 rc = brightness_set(level);
5727 return (rc == -EINTR)? ERESTARTSYS : rc;
5730 static struct ibm_struct brightness_driver_data = {
5731 .name = "brightness",
5732 .read = brightness_read,
5733 .write = brightness_write,
5734 .exit = brightness_exit,
5737 /*************************************************************************
5741 static int volume_offset = 0x30;
5743 static int volume_read(char *p)
5748 if (!acpi_ec_read(volume_offset, &level)) {
5749 len += sprintf(p + len, "level:\t\tunreadable\n");
5751 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
5752 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
5753 len += sprintf(p + len, "commands:\tup, down, mute\n");
5754 len += sprintf(p + len, "commands:\tlevel <level>"
5755 " (<level> is 0-15)\n");
5761 static int volume_write(char *buf)
5763 int cmos_cmd, inc, i;
5765 int new_level, new_mute;
5768 while ((cmd = next_cmd(&buf))) {
5769 if (!acpi_ec_read(volume_offset, &level))
5771 new_mute = mute = level & 0x40;
5772 new_level = level = level & 0xf;
5774 if (strlencmp(cmd, "up") == 0) {
5778 new_level = level == 15 ? 15 : level + 1;
5779 } else if (strlencmp(cmd, "down") == 0) {
5783 new_level = level == 0 ? 0 : level - 1;
5784 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
5785 new_level >= 0 && new_level <= 15) {
5787 } else if (strlencmp(cmd, "mute") == 0) {
5792 if (new_level != level) {
5793 /* mute doesn't change */
5795 cmos_cmd = (new_level > level) ?
5796 TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
5797 inc = new_level > level ? 1 : -1;
5799 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
5800 !acpi_ec_write(volume_offset, level)))
5803 for (i = level; i != new_level; i += inc)
5804 if (issue_thinkpad_cmos_command(cmos_cmd) ||
5805 !acpi_ec_write(volume_offset, i + inc))
5809 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
5810 !acpi_ec_write(volume_offset, new_level + mute))) {
5815 if (new_mute != mute) {
5816 /* level doesn't change */
5818 cmos_cmd = (new_mute) ?
5819 TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
5821 if (issue_thinkpad_cmos_command(cmos_cmd) ||
5822 !acpi_ec_write(volume_offset, level + new_mute))
5830 static struct ibm_struct volume_driver_data = {
5832 .read = volume_read,
5833 .write = volume_write,
5836 /*************************************************************************
5843 * TPACPI_FAN_RD_ACPI_GFAN:
5844 * ACPI GFAN method: returns fan level
5846 * see TPACPI_FAN_WR_ACPI_SFAN
5847 * EC 0x2f (HFSP) not available if GFAN exists
5849 * TPACPI_FAN_WR_ACPI_SFAN:
5850 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
5852 * EC 0x2f (HFSP) might be available *for reading*, but do not use
5855 * TPACPI_FAN_WR_TPEC:
5856 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
5857 * Supported on almost all ThinkPads
5859 * Fan speed changes of any sort (including those caused by the
5860 * disengaged mode) are usually done slowly by the firmware as the
5861 * maximum ammount of fan duty cycle change per second seems to be
5864 * Reading is not available if GFAN exists.
5865 * Writing is not available if SFAN exists.
5868 * 7 automatic mode engaged;
5869 * (default operation mode of the ThinkPad)
5870 * fan level is ignored in this mode.
5871 * 6 full speed mode (takes precedence over bit 7);
5872 * not available on all thinkpads. May disable
5873 * the tachometer while the fan controller ramps up
5874 * the speed (which can take up to a few *minutes*).
5875 * Speeds up fan to 100% duty-cycle, which is far above
5876 * the standard RPM levels. It is not impossible that
5877 * it could cause hardware damage.
5878 * 5-3 unused in some models. Extra bits for fan level
5879 * in others, but still useless as all values above
5880 * 7 map to the same speed as level 7 in these models.
5881 * 2-0 fan level (0..7 usually)
5883 * 0x07 = max (set when temperatures critical)
5884 * Some ThinkPads may have other levels, see
5885 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
5887 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
5888 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
5889 * does so, its initial value is meaningless (0x07).
5891 * For firmware bugs, refer to:
5892 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5896 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
5897 * Main fan tachometer reading (in RPM)
5899 * This register is present on all ThinkPads with a new-style EC, and
5900 * it is known not to be present on the A21m/e, and T22, as there is
5901 * something else in offset 0x84 according to the ACPI DSDT. Other
5902 * ThinkPads from this same time period (and earlier) probably lack the
5903 * tachometer as well.
5905 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
5906 * was never fixed by IBM to report the EC firmware version string
5907 * probably support the tachometer (like the early X models), so
5908 * detecting it is quite hard. We need more data to know for sure.
5910 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
5913 * FIRMWARE BUG: may go stale while the EC is switching to full speed
5916 * For firmware bugs, refer to:
5917 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5919 * TPACPI_FAN_WR_ACPI_FANS:
5920 * ThinkPad X31, X40, X41. Not available in the X60.
5922 * FANS ACPI handle: takes three arguments: low speed, medium speed,
5923 * high speed. ACPI DSDT seems to map these three speeds to levels
5924 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
5925 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
5927 * The speeds are stored on handles
5928 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
5930 * There are three default speed sets, acessible as handles:
5931 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
5933 * ACPI DSDT switches which set is in use depending on various
5936 * TPACPI_FAN_WR_TPEC is also available and should be used to
5937 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
5938 * but the ACPI tables just mention level 7.
5941 enum { /* Fan control constants */
5942 fan_status_offset = 0x2f, /* EC register 0x2f */
5943 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
5944 * 0x84 must be read before 0x85 */
5946 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
5947 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
5949 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
5952 enum fan_status_access_mode {
5953 TPACPI_FAN_NONE = 0, /* No fan status or control */
5954 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
5955 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
5958 enum fan_control_access_mode {
5959 TPACPI_FAN_WR_NONE = 0, /* No fan control */
5960 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
5961 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
5962 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
5965 enum fan_control_commands {
5966 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
5967 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
5968 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
5969 * and also watchdog cmd */
5972 static int fan_control_allowed;
5974 static enum fan_status_access_mode fan_status_access_mode;
5975 static enum fan_control_access_mode fan_control_access_mode;
5976 static enum fan_control_commands fan_control_commands;
5978 static u8 fan_control_initial_status;
5979 static u8 fan_control_desired_level;
5980 static u8 fan_control_resume_level;
5981 static int fan_watchdog_maxinterval;
5983 static struct mutex fan_mutex;
5985 static void fan_watchdog_fire(struct work_struct *ignored);
5986 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
5988 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
5989 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
5990 "\\FSPD", /* 600e/x, 770e, 770x */
5992 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
5993 "JFNS", /* 770x-JL */
5997 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
5998 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
5999 * be in auto mode (0x80).
6001 * This is corrected by any write to HFSP either by the driver, or
6004 * We assume 0x07 really means auto mode while this quirk is active,
6005 * as this is far more likely than the ThinkPad being in level 7,
6006 * which is only used by the firmware during thermal emergencies.
6009 static void fan_quirk1_detect(void)
6011 /* In some ThinkPads, neither the EC nor the ACPI
6012 * DSDT initialize the HFSP register, and it ends up
6013 * being initially set to 0x07 when it *could* be
6014 * either 0x07 or 0x80.
6016 * Enable for TP-1Y (T43), TP-78 (R51e),
6017 * TP-76 (R52), TP-70 (T43, R52), which are known
6019 if (fan_control_initial_status == 0x07) {
6020 switch (thinkpad_id.ec_model) {
6021 case 0x5931: /* TP-1Y */
6022 case 0x3837: /* TP-78 */
6023 case 0x3637: /* TP-76 */
6024 case 0x3037: /* TP-70 */
6025 printk(TPACPI_NOTICE
6026 "fan_init: initial fan status is unknown, "
6027 "assuming it is in auto mode\n");
6028 tp_features.fan_ctrl_status_undef = 1;
6034 static void fan_quirk1_handle(u8 *fan_status)
6036 if (unlikely(tp_features.fan_ctrl_status_undef)) {
6037 if (*fan_status != fan_control_initial_status) {
6038 /* something changed the HFSP regisnter since
6039 * driver init time, so it is not undefined
6041 tp_features.fan_ctrl_status_undef = 0;
6043 /* Return most likely status. In fact, it
6044 * might be the only possible status */
6045 *fan_status = TP_EC_FAN_AUTO;
6051 * Call with fan_mutex held
6053 static void fan_update_desired_level(u8 status)
6056 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6058 fan_control_desired_level = 7;
6060 fan_control_desired_level = status;
6064 static int fan_get_status(u8 *status)
6069 * Add TPACPI_FAN_RD_ACPI_FANS ? */
6071 switch (fan_status_access_mode) {
6072 case TPACPI_FAN_RD_ACPI_GFAN:
6073 /* 570, 600e/x, 770e, 770x */
6075 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
6083 case TPACPI_FAN_RD_TPEC:
6084 /* all except 570, 600e/x, 770e, 770x */
6085 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
6088 if (likely(status)) {
6090 fan_quirk1_handle(status);
6102 static int fan_get_status_safe(u8 *status)
6107 if (mutex_lock_killable(&fan_mutex))
6108 return -ERESTARTSYS;
6109 rc = fan_get_status(&s);
6111 fan_update_desired_level(s);
6112 mutex_unlock(&fan_mutex);
6120 static int fan_get_speed(unsigned int *speed)
6124 switch (fan_status_access_mode) {
6125 case TPACPI_FAN_RD_TPEC:
6126 /* all except 570, 600e/x, 770e, 770x */
6127 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
6128 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
6132 *speed = (hi << 8) | lo;
6143 static int fan_set_level(int level)
6145 if (!fan_control_allowed)
6148 switch (fan_control_access_mode) {
6149 case TPACPI_FAN_WR_ACPI_SFAN:
6150 if (level >= 0 && level <= 7) {
6151 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
6157 case TPACPI_FAN_WR_ACPI_FANS:
6158 case TPACPI_FAN_WR_TPEC:
6159 if (!(level & TP_EC_FAN_AUTO) &&
6160 !(level & TP_EC_FAN_FULLSPEED) &&
6161 ((level < 0) || (level > 7)))
6164 /* safety net should the EC not support AUTO
6165 * or FULLSPEED mode bits and just ignore them */
6166 if (level & TP_EC_FAN_FULLSPEED)
6167 level |= 7; /* safety min speed 7 */
6168 else if (level & TP_EC_FAN_AUTO)
6169 level |= 4; /* safety min speed 4 */
6171 if (!acpi_ec_write(fan_status_offset, level))
6174 tp_features.fan_ctrl_status_undef = 0;
6183 static int fan_set_level_safe(int level)
6187 if (!fan_control_allowed)
6190 if (mutex_lock_killable(&fan_mutex))
6191 return -ERESTARTSYS;
6193 if (level == TPACPI_FAN_LAST_LEVEL)
6194 level = fan_control_desired_level;
6196 rc = fan_set_level(level);
6198 fan_update_desired_level(level);
6200 mutex_unlock(&fan_mutex);
6204 static int fan_set_enable(void)
6209 if (!fan_control_allowed)
6212 if (mutex_lock_killable(&fan_mutex))
6213 return -ERESTARTSYS;
6215 switch (fan_control_access_mode) {
6216 case TPACPI_FAN_WR_ACPI_FANS:
6217 case TPACPI_FAN_WR_TPEC:
6218 rc = fan_get_status(&s);
6222 /* Don't go out of emergency fan mode */
6225 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
6228 if (!acpi_ec_write(fan_status_offset, s))
6231 tp_features.fan_ctrl_status_undef = 0;
6236 case TPACPI_FAN_WR_ACPI_SFAN:
6237 rc = fan_get_status(&s);
6243 /* Set fan to at least level 4 */
6246 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
6256 mutex_unlock(&fan_mutex);
6260 static int fan_set_disable(void)
6264 if (!fan_control_allowed)
6267 if (mutex_lock_killable(&fan_mutex))
6268 return -ERESTARTSYS;
6271 switch (fan_control_access_mode) {
6272 case TPACPI_FAN_WR_ACPI_FANS:
6273 case TPACPI_FAN_WR_TPEC:
6274 if (!acpi_ec_write(fan_status_offset, 0x00))
6277 fan_control_desired_level = 0;
6278 tp_features.fan_ctrl_status_undef = 0;
6282 case TPACPI_FAN_WR_ACPI_SFAN:
6283 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
6286 fan_control_desired_level = 0;
6294 mutex_unlock(&fan_mutex);
6298 static int fan_set_speed(int speed)
6302 if (!fan_control_allowed)
6305 if (mutex_lock_killable(&fan_mutex))
6306 return -ERESTARTSYS;
6309 switch (fan_control_access_mode) {
6310 case TPACPI_FAN_WR_ACPI_FANS:
6311 if (speed >= 0 && speed <= 65535) {
6312 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
6313 speed, speed, speed))
6323 mutex_unlock(&fan_mutex);
6327 static void fan_watchdog_reset(void)
6329 static int fan_watchdog_active;
6331 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
6334 if (fan_watchdog_active)
6335 cancel_delayed_work(&fan_watchdog_task);
6337 if (fan_watchdog_maxinterval > 0 &&
6338 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
6339 fan_watchdog_active = 1;
6340 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
6341 msecs_to_jiffies(fan_watchdog_maxinterval
6344 "failed to queue the fan watchdog, "
6345 "watchdog will not trigger\n");
6348 fan_watchdog_active = 0;
6351 static void fan_watchdog_fire(struct work_struct *ignored)
6355 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
6358 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
6359 rc = fan_set_enable();
6361 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
6362 "will try again later...\n", -rc);
6363 /* reschedule for later */
6364 fan_watchdog_reset();
6369 * SYSFS fan layout: hwmon compatible (device)
6372 * 0: "disengaged" mode
6374 * 2: native EC "auto" mode (recommended, hardware default)
6376 * pwm*: set speed in manual mode, ignored otherwise.
6377 * 0 is level 0; 255 is level 7. Intermediate points done with linear
6380 * fan*_input: tachometer reading, RPM
6383 * SYSFS fan layout: extensions
6385 * fan_watchdog (driver):
6386 * fan watchdog interval in seconds, 0 disables (default), max 120
6389 /* sysfs fan pwm1_enable ----------------------------------------------- */
6390 static ssize_t fan_pwm1_enable_show(struct device *dev,
6391 struct device_attribute *attr,
6397 res = fan_get_status_safe(&status);
6401 if (status & TP_EC_FAN_FULLSPEED) {
6403 } else if (status & TP_EC_FAN_AUTO) {
6408 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
6411 static ssize_t fan_pwm1_enable_store(struct device *dev,
6412 struct device_attribute *attr,
6413 const char *buf, size_t count)
6418 if (parse_strtoul(buf, 2, &t))
6423 level = TP_EC_FAN_FULLSPEED;
6426 level = TPACPI_FAN_LAST_LEVEL;
6429 level = TP_EC_FAN_AUTO;
6432 /* reserved for software-controlled auto mode */
6438 res = fan_set_level_safe(level);
6444 fan_watchdog_reset();
6449 static struct device_attribute dev_attr_fan_pwm1_enable =
6450 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
6451 fan_pwm1_enable_show, fan_pwm1_enable_store);
6453 /* sysfs fan pwm1 ------------------------------------------------------ */
6454 static ssize_t fan_pwm1_show(struct device *dev,
6455 struct device_attribute *attr,
6461 res = fan_get_status_safe(&status);
6466 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
6467 status = fan_control_desired_level;
6472 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
6475 static ssize_t fan_pwm1_store(struct device *dev,
6476 struct device_attribute *attr,
6477 const char *buf, size_t count)
6481 u8 status, newlevel;
6483 if (parse_strtoul(buf, 255, &s))
6486 /* scale down from 0-255 to 0-7 */
6487 newlevel = (s >> 5) & 0x07;
6489 if (mutex_lock_killable(&fan_mutex))
6490 return -ERESTARTSYS;
6492 rc = fan_get_status(&status);
6493 if (!rc && (status &
6494 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6495 rc = fan_set_level(newlevel);
6499 fan_update_desired_level(newlevel);
6500 fan_watchdog_reset();
6504 mutex_unlock(&fan_mutex);
6505 return (rc)? rc : count;
6508 static struct device_attribute dev_attr_fan_pwm1 =
6509 __ATTR(pwm1, S_IWUSR | S_IRUGO,
6510 fan_pwm1_show, fan_pwm1_store);
6512 /* sysfs fan fan1_input ------------------------------------------------ */
6513 static ssize_t fan_fan1_input_show(struct device *dev,
6514 struct device_attribute *attr,
6520 res = fan_get_speed(&speed);
6524 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
6527 static struct device_attribute dev_attr_fan_fan1_input =
6528 __ATTR(fan1_input, S_IRUGO,
6529 fan_fan1_input_show, NULL);
6531 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
6532 static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
6535 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
6538 static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
6539 const char *buf, size_t count)
6543 if (parse_strtoul(buf, 120, &t))
6546 if (!fan_control_allowed)
6549 fan_watchdog_maxinterval = t;
6550 fan_watchdog_reset();
6555 static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
6556 fan_fan_watchdog_show, fan_fan_watchdog_store);
6558 /* --------------------------------------------------------------------- */
6559 static struct attribute *fan_attributes[] = {
6560 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
6561 &dev_attr_fan_fan1_input.attr,
6565 static const struct attribute_group fan_attr_group = {
6566 .attrs = fan_attributes,
6569 static int __init fan_init(struct ibm_init_struct *iibm)
6573 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
6575 mutex_init(&fan_mutex);
6576 fan_status_access_mode = TPACPI_FAN_NONE;
6577 fan_control_access_mode = TPACPI_FAN_WR_NONE;
6578 fan_control_commands = 0;
6579 fan_watchdog_maxinterval = 0;
6580 tp_features.fan_ctrl_status_undef = 0;
6581 fan_control_desired_level = 7;
6583 TPACPI_ACPIHANDLE_INIT(fans);
6584 TPACPI_ACPIHANDLE_INIT(gfan);
6585 TPACPI_ACPIHANDLE_INIT(sfan);
6588 /* 570, 600e/x, 770e, 770x */
6589 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
6591 /* all other ThinkPads: note that even old-style
6592 * ThinkPad ECs supports the fan control register */
6593 if (likely(acpi_ec_read(fan_status_offset,
6594 &fan_control_initial_status))) {
6595 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
6596 fan_quirk1_detect();
6599 "ThinkPad ACPI EC access misbehaving, "
6600 "fan status and control unavailable\n");
6607 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
6608 fan_control_commands |=
6609 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
6612 /* gfan without sfan means no fan control */
6613 /* all other models implement TP EC 0x2f control */
6617 fan_control_access_mode =
6618 TPACPI_FAN_WR_ACPI_FANS;
6619 fan_control_commands |=
6620 TPACPI_FAN_CMD_SPEED |
6621 TPACPI_FAN_CMD_LEVEL |
6622 TPACPI_FAN_CMD_ENABLE;
6624 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
6625 fan_control_commands |=
6626 TPACPI_FAN_CMD_LEVEL |
6627 TPACPI_FAN_CMD_ENABLE;
6632 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
6633 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
6634 fan_control_access_mode != TPACPI_FAN_WR_NONE),
6635 fan_status_access_mode, fan_control_access_mode);
6637 /* fan control master switch */
6638 if (!fan_control_allowed) {
6639 fan_control_access_mode = TPACPI_FAN_WR_NONE;
6640 fan_control_commands = 0;
6641 dbg_printk(TPACPI_DBG_INIT,
6642 "fan control features disabled by parameter\n");
6645 /* update fan_control_desired_level */
6646 if (fan_status_access_mode != TPACPI_FAN_NONE)
6647 fan_get_status_safe(NULL);
6649 if (fan_status_access_mode != TPACPI_FAN_NONE ||
6650 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
6651 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
6656 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
6657 &driver_attr_fan_watchdog);
6659 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
6668 static void fan_exit(void)
6670 vdbg_printk(TPACPI_DBG_EXIT,
6671 "cancelling any pending fan watchdog tasks\n");
6673 /* FIXME: can we really do this unconditionally? */
6674 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
6675 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
6676 &driver_attr_fan_watchdog);
6678 cancel_delayed_work(&fan_watchdog_task);
6679 flush_workqueue(tpacpi_wq);
6682 static void fan_suspend(pm_message_t state)
6686 if (!fan_control_allowed)
6689 /* Store fan status in cache */
6690 fan_control_resume_level = 0;
6691 rc = fan_get_status_safe(&fan_control_resume_level);
6693 printk(TPACPI_NOTICE
6694 "failed to read fan level for later "
6695 "restore during resume: %d\n", rc);
6697 /* if it is undefined, don't attempt to restore it.
6699 if (tp_features.fan_ctrl_status_undef)
6700 fan_control_resume_level = 0;
6703 static void fan_resume(void)
6705 u8 current_level = 7;
6706 bool do_set = false;
6709 /* DSDT *always* updates status on resume */
6710 tp_features.fan_ctrl_status_undef = 0;
6712 if (!fan_control_allowed ||
6713 !fan_control_resume_level ||
6714 (fan_get_status_safe(¤t_level) < 0))
6717 switch (fan_control_access_mode) {
6718 case TPACPI_FAN_WR_ACPI_SFAN:
6719 /* never decrease fan level */
6720 do_set = (fan_control_resume_level > current_level);
6722 case TPACPI_FAN_WR_ACPI_FANS:
6723 case TPACPI_FAN_WR_TPEC:
6724 /* never decrease fan level, scale is:
6725 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
6727 * We expect the firmware to set either 7 or AUTO, but we
6728 * handle FULLSPEED out of paranoia.
6730 * So, we can safely only restore FULLSPEED or 7, anything
6731 * else could slow the fan. Restoring AUTO is useless, at
6732 * best that's exactly what the DSDT already set (it is the
6735 * Always keep in mind that the DSDT *will* have set the
6736 * fans to what the vendor supposes is the best level. We
6737 * muck with it only to speed the fan up.
6739 if (fan_control_resume_level != 7 &&
6740 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
6743 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
6744 (current_level != fan_control_resume_level);
6750 printk(TPACPI_NOTICE
6751 "restoring fan level to 0x%02x\n",
6752 fan_control_resume_level);
6753 rc = fan_set_level_safe(fan_control_resume_level);
6755 printk(TPACPI_NOTICE
6756 "failed to restore fan level: %d\n", rc);
6760 static int fan_read(char *p)
6765 unsigned int speed = 0;
6767 switch (fan_status_access_mode) {
6768 case TPACPI_FAN_RD_ACPI_GFAN:
6769 /* 570, 600e/x, 770e, 770x */
6770 rc = fan_get_status_safe(&status);
6774 len += sprintf(p + len, "status:\t\t%s\n"
6776 (status != 0) ? "enabled" : "disabled", status);
6779 case TPACPI_FAN_RD_TPEC:
6780 /* all except 570, 600e/x, 770e, 770x */
6781 rc = fan_get_status_safe(&status);
6785 len += sprintf(p + len, "status:\t\t%s\n",
6786 (status != 0) ? "enabled" : "disabled");
6788 rc = fan_get_speed(&speed);
6792 len += sprintf(p + len, "speed:\t\t%d\n", speed);
6794 if (status & TP_EC_FAN_FULLSPEED)
6795 /* Disengaged mode takes precedence */
6796 len += sprintf(p + len, "level:\t\tdisengaged\n");
6797 else if (status & TP_EC_FAN_AUTO)
6798 len += sprintf(p + len, "level:\t\tauto\n");
6800 len += sprintf(p + len, "level:\t\t%d\n", status);
6803 case TPACPI_FAN_NONE:
6805 len += sprintf(p + len, "status:\t\tnot supported\n");
6808 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
6809 len += sprintf(p + len, "commands:\tlevel <level>");
6811 switch (fan_control_access_mode) {
6812 case TPACPI_FAN_WR_ACPI_SFAN:
6813 len += sprintf(p + len, " (<level> is 0-7)\n");
6817 len += sprintf(p + len, " (<level> is 0-7, "
6818 "auto, disengaged, full-speed)\n");
6823 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
6824 len += sprintf(p + len, "commands:\tenable, disable\n"
6825 "commands:\twatchdog <timeout> (<timeout> "
6826 "is 0 (off), 1-120 (seconds))\n");
6828 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
6829 len += sprintf(p + len, "commands:\tspeed <speed>"
6830 " (<speed> is 0-65535)\n");
6835 static int fan_write_cmd_level(const char *cmd, int *rc)
6839 if (strlencmp(cmd, "level auto") == 0)
6840 level = TP_EC_FAN_AUTO;
6841 else if ((strlencmp(cmd, "level disengaged") == 0) |
6842 (strlencmp(cmd, "level full-speed") == 0))
6843 level = TP_EC_FAN_FULLSPEED;
6844 else if (sscanf(cmd, "level %d", &level) != 1)
6847 *rc = fan_set_level_safe(level);
6849 printk(TPACPI_ERR "level command accepted for unsupported "
6850 "access mode %d", fan_control_access_mode);
6855 static int fan_write_cmd_enable(const char *cmd, int *rc)
6857 if (strlencmp(cmd, "enable") != 0)
6860 *rc = fan_set_enable();
6862 printk(TPACPI_ERR "enable command accepted for unsupported "
6863 "access mode %d", fan_control_access_mode);
6868 static int fan_write_cmd_disable(const char *cmd, int *rc)
6870 if (strlencmp(cmd, "disable") != 0)
6873 *rc = fan_set_disable();
6875 printk(TPACPI_ERR "disable command accepted for unsupported "
6876 "access mode %d", fan_control_access_mode);
6881 static int fan_write_cmd_speed(const char *cmd, int *rc)
6886 * Support speed <low> <medium> <high> ? */
6888 if (sscanf(cmd, "speed %d", &speed) != 1)
6891 *rc = fan_set_speed(speed);
6893 printk(TPACPI_ERR "speed command accepted for unsupported "
6894 "access mode %d", fan_control_access_mode);
6899 static int fan_write_cmd_watchdog(const char *cmd, int *rc)
6903 if (sscanf(cmd, "watchdog %d", &interval) != 1)
6906 if (interval < 0 || interval > 120)
6909 fan_watchdog_maxinterval = interval;
6914 static int fan_write(char *buf)
6919 while (!rc && (cmd = next_cmd(&buf))) {
6920 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
6921 fan_write_cmd_level(cmd, &rc)) &&
6922 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
6923 (fan_write_cmd_enable(cmd, &rc) ||
6924 fan_write_cmd_disable(cmd, &rc) ||
6925 fan_write_cmd_watchdog(cmd, &rc))) &&
6926 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
6927 fan_write_cmd_speed(cmd, &rc))
6931 fan_watchdog_reset();
6937 static struct ibm_struct fan_driver_data = {
6942 .suspend = fan_suspend,
6943 .resume = fan_resume,
6946 /****************************************************************************
6947 ****************************************************************************
6951 ****************************************************************************
6952 ****************************************************************************/
6954 /* sysfs name ---------------------------------------------------------- */
6955 static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
6956 struct device_attribute *attr,
6959 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
6962 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
6963 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
6965 /* --------------------------------------------------------------------- */
6968 static struct proc_dir_entry *proc_dir;
6971 * Module and infrastructure proble, init and exit handling
6974 static int force_load;
6976 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
6977 static const char * __init str_supported(int is_supported)
6979 static char text_unsupported[] __initdata = "not supported";
6981 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
6983 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
6985 static void ibm_exit(struct ibm_struct *ibm)
6987 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
6989 list_del_init(&ibm->all_drivers);
6991 if (ibm->flags.acpi_notify_installed) {
6992 dbg_printk(TPACPI_DBG_EXIT,
6993 "%s: acpi_remove_notify_handler\n", ibm->name);
6995 acpi_remove_notify_handler(*ibm->acpi->handle,
6997 dispatch_acpi_notify);
6998 ibm->flags.acpi_notify_installed = 0;
6999 ibm->flags.acpi_notify_installed = 0;
7002 if (ibm->flags.proc_created) {
7003 dbg_printk(TPACPI_DBG_EXIT,
7004 "%s: remove_proc_entry\n", ibm->name);
7005 remove_proc_entry(ibm->name, proc_dir);
7006 ibm->flags.proc_created = 0;
7009 if (ibm->flags.acpi_driver_registered) {
7010 dbg_printk(TPACPI_DBG_EXIT,
7011 "%s: acpi_bus_unregister_driver\n", ibm->name);
7013 acpi_bus_unregister_driver(ibm->acpi->driver);
7014 kfree(ibm->acpi->driver);
7015 ibm->acpi->driver = NULL;
7016 ibm->flags.acpi_driver_registered = 0;
7019 if (ibm->flags.init_called && ibm->exit) {
7021 ibm->flags.init_called = 0;
7024 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
7027 static int __init ibm_init(struct ibm_init_struct *iibm)
7030 struct ibm_struct *ibm = iibm->data;
7031 struct proc_dir_entry *entry;
7033 BUG_ON(ibm == NULL);
7035 INIT_LIST_HEAD(&ibm->all_drivers);
7037 if (ibm->flags.experimental && !experimental)
7040 dbg_printk(TPACPI_DBG_INIT,
7041 "probing for %s\n", ibm->name);
7044 ret = iibm->init(iibm);
7046 return 0; /* probe failed */
7050 ibm->flags.init_called = 1;
7054 if (ibm->acpi->hid) {
7055 ret = register_tpacpi_subdriver(ibm);
7060 if (ibm->acpi->notify) {
7061 ret = setup_acpi_notify(ibm);
7062 if (ret == -ENODEV) {
7063 printk(TPACPI_NOTICE "disabling subdriver %s\n",
7073 dbg_printk(TPACPI_DBG_INIT,
7074 "%s installed\n", ibm->name);
7077 entry = create_proc_entry(ibm->name,
7078 S_IFREG | S_IRUGO | S_IWUSR,
7081 printk(TPACPI_ERR "unable to create proc entry %s\n",
7086 entry->owner = THIS_MODULE;
7088 entry->read_proc = &dispatch_procfs_read;
7090 entry->write_proc = &dispatch_procfs_write;
7091 ibm->flags.proc_created = 1;
7094 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
7099 dbg_printk(TPACPI_DBG_INIT,
7100 "%s: at error exit path with result %d\n",
7104 return (ret < 0)? ret : 0;
7109 /* returns 0 - probe ok, or < 0 - probe error.
7110 * Probe ok doesn't mean thinkpad found.
7111 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
7112 static int __must_check __init get_thinkpad_model_data(
7113 struct thinkpad_id_data *tp)
7115 const struct dmi_device *dev = NULL;
7116 char ec_fw_string[18];
7122 memset(tp, 0, sizeof(*tp));
7124 if (dmi_name_in_vendors("IBM"))
7125 tp->vendor = PCI_VENDOR_ID_IBM;
7126 else if (dmi_name_in_vendors("LENOVO"))
7127 tp->vendor = PCI_VENDOR_ID_LENOVO;
7131 s = dmi_get_system_info(DMI_BIOS_VERSION);
7132 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
7133 if (s && !tp->bios_version_str)
7135 if (!tp->bios_version_str)
7137 tp->bios_model = tp->bios_version_str[0]
7138 | (tp->bios_version_str[1] << 8);
7141 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
7142 * X32 or newer, all Z series; Some models must have an
7143 * up-to-date BIOS or they will not be detected.
7145 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7147 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
7148 if (sscanf(dev->name,
7149 "IBM ThinkPad Embedded Controller -[%17c",
7150 ec_fw_string) == 1) {
7151 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
7152 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
7154 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
7155 if (!tp->ec_version_str)
7157 tp->ec_model = ec_fw_string[0]
7158 | (ec_fw_string[1] << 8);
7163 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
7164 if (s && !strnicmp(s, "ThinkPad", 8)) {
7165 tp->model_str = kstrdup(s, GFP_KERNEL);
7170 s = dmi_get_system_info(DMI_PRODUCT_NAME);
7171 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
7172 if (s && !tp->nummodel_str)
7178 static int __init probe_for_thinkpad(void)
7186 * Non-ancient models have better DMI tagging, but very old models
7189 is_thinkpad = (thinkpad_id.model_str != NULL);
7191 /* ec is required because many other handles are relative to it */
7192 TPACPI_ACPIHANDLE_INIT(ec);
7196 "Not yet supported ThinkPad detected!\n");
7201 * Risks a regression on very old machines, but reduces potential
7202 * false positives a damn great deal
7205 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
7207 if (!is_thinkpad && !force_load)
7214 /* Module init, exit, parameters */
7216 static struct ibm_init_struct ibms_init[] __initdata = {
7218 .init = thinkpad_acpi_driver_init,
7219 .data = &thinkpad_acpi_driver_data,
7222 .init = hotkey_init,
7223 .data = &hotkey_driver_data,
7226 .init = bluetooth_init,
7227 .data = &bluetooth_driver_data,
7231 .data = &wan_driver_data,
7235 .data = &uwb_driver_data,
7237 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
7240 .data = &video_driver_data,
7245 .data = &light_driver_data,
7247 #ifdef CONFIG_THINKPAD_ACPI_DOCK
7250 .data = &dock_driver_data[0],
7254 .data = &dock_driver_data[1],
7257 #ifdef CONFIG_THINKPAD_ACPI_BAY
7260 .data = &bay_driver_data,
7265 .data = &cmos_driver_data,
7269 .data = &led_driver_data,
7273 .data = &beep_driver_data,
7276 .init = thermal_init,
7277 .data = &thermal_driver_data,
7280 .data = &ecdump_driver_data,
7283 .init = brightness_init,
7284 .data = &brightness_driver_data,
7287 .data = &volume_driver_data,
7291 .data = &fan_driver_data,
7295 static int __init set_ibm_param(const char *val, struct kernel_param *kp)
7298 struct ibm_struct *ibm;
7300 if (!kp || !kp->name || !val)
7303 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7304 ibm = ibms_init[i].data;
7305 WARN_ON(ibm == NULL);
7307 if (!ibm || !ibm->name)
7310 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
7311 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
7313 strcpy(ibms_init[i].param, val);
7314 strcat(ibms_init[i].param, ",");
7322 module_param(experimental, int, 0);
7323 MODULE_PARM_DESC(experimental,
7324 "Enables experimental features when non-zero");
7326 module_param_named(debug, dbg_level, uint, 0);
7327 MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
7329 module_param(force_load, bool, 0);
7330 MODULE_PARM_DESC(force_load,
7331 "Attempts to load the driver even on a "
7332 "mis-identified ThinkPad when true");
7334 module_param_named(fan_control, fan_control_allowed, bool, 0);
7335 MODULE_PARM_DESC(fan_control,
7336 "Enables setting fan parameters features when true");
7338 module_param_named(brightness_mode, brightness_mode, int, 0);
7339 MODULE_PARM_DESC(brightness_mode,
7340 "Selects brightness control strategy: "
7341 "0=auto, 1=EC, 2=CMOS, 3=both");
7343 module_param(brightness_enable, uint, 0);
7344 MODULE_PARM_DESC(brightness_enable,
7345 "Enables backlight control when 1, disables when 0");
7347 module_param(hotkey_report_mode, uint, 0);
7348 MODULE_PARM_DESC(hotkey_report_mode,
7349 "used for backwards compatibility with userspace, "
7350 "see documentation");
7352 #define TPACPI_PARAM(feature) \
7353 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
7354 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
7355 "at module load, see documentation")
7357 TPACPI_PARAM(hotkey);
7358 TPACPI_PARAM(bluetooth);
7359 TPACPI_PARAM(video);
7360 TPACPI_PARAM(light);
7361 #ifdef CONFIG_THINKPAD_ACPI_DOCK
7364 #ifdef CONFIG_THINKPAD_ACPI_BAY
7366 #endif /* CONFIG_THINKPAD_ACPI_BAY */
7370 TPACPI_PARAM(ecdump);
7371 TPACPI_PARAM(brightness);
7372 TPACPI_PARAM(volume);
7375 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
7376 module_param(dbg_wlswemul, uint, 0);
7377 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
7378 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
7379 MODULE_PARM_DESC(wlsw_state,
7380 "Initial state of the emulated WLSW switch");
7382 module_param(dbg_bluetoothemul, uint, 0);
7383 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
7384 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
7385 MODULE_PARM_DESC(bluetooth_state,
7386 "Initial state of the emulated bluetooth switch");
7388 module_param(dbg_wwanemul, uint, 0);
7389 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
7390 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
7391 MODULE_PARM_DESC(wwan_state,
7392 "Initial state of the emulated WWAN switch");
7394 module_param(dbg_uwbemul, uint, 0);
7395 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
7396 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
7397 MODULE_PARM_DESC(uwb_state,
7398 "Initial state of the emulated UWB switch");
7401 static void thinkpad_acpi_module_exit(void)
7403 struct ibm_struct *ibm, *itmp;
7405 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
7407 list_for_each_entry_safe_reverse(ibm, itmp,
7408 &tpacpi_all_drivers,
7413 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
7415 if (tpacpi_inputdev) {
7416 if (tp_features.input_device_registered)
7417 input_unregister_device(tpacpi_inputdev);
7419 input_free_device(tpacpi_inputdev);
7423 hwmon_device_unregister(tpacpi_hwmon);
7425 if (tp_features.sensors_pdev_attrs_registered)
7426 device_remove_file(&tpacpi_sensors_pdev->dev,
7427 &dev_attr_thinkpad_acpi_pdev_name);
7428 if (tpacpi_sensors_pdev)
7429 platform_device_unregister(tpacpi_sensors_pdev);
7431 platform_device_unregister(tpacpi_pdev);
7433 if (tp_features.sensors_pdrv_attrs_registered)
7434 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
7435 if (tp_features.platform_drv_attrs_registered)
7436 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
7438 if (tp_features.sensors_pdrv_registered)
7439 platform_driver_unregister(&tpacpi_hwmon_pdriver);
7441 if (tp_features.platform_drv_registered)
7442 platform_driver_unregister(&tpacpi_pdriver);
7445 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
7448 destroy_workqueue(tpacpi_wq);
7450 kfree(thinkpad_id.bios_version_str);
7451 kfree(thinkpad_id.ec_version_str);
7452 kfree(thinkpad_id.model_str);
7456 static int __init thinkpad_acpi_module_init(void)
7460 tpacpi_lifecycle = TPACPI_LIFE_INIT;
7462 /* Parameter checking */
7463 if (hotkey_report_mode > 2)
7466 /* Driver-level probe */
7468 ret = get_thinkpad_model_data(&thinkpad_id);
7471 "unable to get DMI data: %d\n", ret);
7472 thinkpad_acpi_module_exit();
7475 ret = probe_for_thinkpad();
7477 thinkpad_acpi_module_exit();
7481 /* Driver initialization */
7483 TPACPI_ACPIHANDLE_INIT(ecrd);
7484 TPACPI_ACPIHANDLE_INIT(ecwr);
7486 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
7488 thinkpad_acpi_module_exit();
7492 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
7495 "unable to create proc dir " TPACPI_PROC_DIR);
7496 thinkpad_acpi_module_exit();
7499 proc_dir->owner = THIS_MODULE;
7501 ret = platform_driver_register(&tpacpi_pdriver);
7504 "unable to register main platform driver\n");
7505 thinkpad_acpi_module_exit();
7508 tp_features.platform_drv_registered = 1;
7510 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
7513 "unable to register hwmon platform driver\n");
7514 thinkpad_acpi_module_exit();
7517 tp_features.sensors_pdrv_registered = 1;
7519 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
7521 tp_features.platform_drv_attrs_registered = 1;
7522 ret = tpacpi_create_driver_attributes(
7523 &tpacpi_hwmon_pdriver.driver);
7527 "unable to create sysfs driver attributes\n");
7528 thinkpad_acpi_module_exit();
7531 tp_features.sensors_pdrv_attrs_registered = 1;
7534 /* Device initialization */
7535 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
7537 if (IS_ERR(tpacpi_pdev)) {
7538 ret = PTR_ERR(tpacpi_pdev);
7540 printk(TPACPI_ERR "unable to register platform device\n");
7541 thinkpad_acpi_module_exit();
7544 tpacpi_sensors_pdev = platform_device_register_simple(
7545 TPACPI_HWMON_DRVR_NAME,
7547 if (IS_ERR(tpacpi_sensors_pdev)) {
7548 ret = PTR_ERR(tpacpi_sensors_pdev);
7549 tpacpi_sensors_pdev = NULL;
7551 "unable to register hwmon platform device\n");
7552 thinkpad_acpi_module_exit();
7555 ret = device_create_file(&tpacpi_sensors_pdev->dev,
7556 &dev_attr_thinkpad_acpi_pdev_name);
7559 "unable to create sysfs hwmon device attributes\n");
7560 thinkpad_acpi_module_exit();
7563 tp_features.sensors_pdev_attrs_registered = 1;
7564 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
7565 if (IS_ERR(tpacpi_hwmon)) {
7566 ret = PTR_ERR(tpacpi_hwmon);
7567 tpacpi_hwmon = NULL;
7568 printk(TPACPI_ERR "unable to register hwmon device\n");
7569 thinkpad_acpi_module_exit();
7572 mutex_init(&tpacpi_inputdev_send_mutex);
7573 tpacpi_inputdev = input_allocate_device();
7574 if (!tpacpi_inputdev) {
7575 printk(TPACPI_ERR "unable to allocate input device\n");
7576 thinkpad_acpi_module_exit();
7579 /* Prepare input device, but don't register */
7580 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
7581 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7582 tpacpi_inputdev->id.bustype = BUS_HOST;
7583 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
7584 thinkpad_id.vendor :
7586 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
7587 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
7589 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7590 ret = ibm_init(&ibms_init[i]);
7591 if (ret >= 0 && *ibms_init[i].param)
7592 ret = ibms_init[i].data->write(ibms_init[i].param);
7594 thinkpad_acpi_module_exit();
7598 ret = input_register_device(tpacpi_inputdev);
7600 printk(TPACPI_ERR "unable to register input device\n");
7601 thinkpad_acpi_module_exit();
7604 tp_features.input_device_registered = 1;
7607 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
7611 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
7614 * DMI matching for module autoloading
7616 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7617 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
7619 * Only models listed in thinkwiki will be supported, so add yours
7620 * if it is not there yet.
7622 #define IBM_BIOS_MODULE_ALIAS(__type) \
7623 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
7625 /* Non-ancient thinkpads */
7626 MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
7627 MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
7629 /* Ancient thinkpad BIOSes have to be identified by
7630 * BIOS type or model number, and there are far less
7631 * BIOS types than model numbers... */
7632 IBM_BIOS_MODULE_ALIAS("I[BDHIMNOTWVYZ]");
7633 IBM_BIOS_MODULE_ALIAS("1[0368A-GIKM-PST]");
7634 IBM_BIOS_MODULE_ALIAS("K[UX-Z]");
7636 MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
7637 MODULE_DESCRIPTION(TPACPI_DESC);
7638 MODULE_VERSION(TPACPI_VERSION);
7639 MODULE_LICENSE("GPL");
7641 module_init(thinkpad_acpi_module_init);
7642 module_exit(thinkpad_acpi_module_exit);