2 * thinkpad_acpi.c - ThinkPad ACPI Extras
5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
6 * Copyright (C) 2006-2007 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 "0.18"
25 #define TPACPI_SYSFS_VERSION 0x020101
29 * 2007-10-20 changelog trimmed down
31 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
34 * 2006-11-22 0.13 new maintainer
35 * changelog now lives in git commit history, and will
36 * not be updated further in-file.
38 * 2005-03-17 0.11 support for 600e, 770x
39 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
41 * 2005-01-16 0.9 use MODULE_VERSION
42 * thanks to Henrik Brix Andersen <brix@gentoo.org>
43 * fix parameter passing on module loading
44 * thanks to Rusty Russell <rusty@rustcorp.com.au>
45 * thanks to Jim Radford <radford@blackbean.org>
46 * 2004-11-08 0.8 fix init error case, don't return from a macro
47 * thanks to Chris Wright <chrisw@osdl.org>
50 #include <linux/kernel.h>
51 #include <linux/module.h>
52 #include <linux/init.h>
53 #include <linux/types.h>
54 #include <linux/string.h>
55 #include <linux/list.h>
56 #include <linux/mutex.h>
57 #include <linux/kthread.h>
58 #include <linux/freezer.h>
59 #include <linux/delay.h>
61 #include <linux/nvram.h>
62 #include <linux/proc_fs.h>
63 #include <linux/sysfs.h>
64 #include <linux/backlight.h>
66 #include <linux/platform_device.h>
67 #include <linux/hwmon.h>
68 #include <linux/hwmon-sysfs.h>
69 #include <linux/input.h>
70 #include <asm/uaccess.h>
72 #include <linux/dmi.h>
73 #include <linux/jiffies.h>
74 #include <linux/workqueue.h>
76 #include <acpi/acpi_drivers.h>
77 #include <acpi/acnamesp.h>
79 #include <linux/pci_ids.h>
82 /* ThinkPad CMOS commands */
83 #define TP_CMOS_VOLUME_DOWN 0
84 #define TP_CMOS_VOLUME_UP 1
85 #define TP_CMOS_VOLUME_MUTE 2
86 #define TP_CMOS_BRIGHTNESS_UP 4
87 #define TP_CMOS_BRIGHTNESS_DOWN 5
91 TP_NVRAM_ADDR_HK2 = 0x57,
92 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
93 TP_NVRAM_ADDR_VIDEO = 0x59,
94 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
95 TP_NVRAM_ADDR_MIXER = 0x60,
100 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
101 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
102 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
103 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
104 TP_NVRAM_MASK_THINKLIGHT = 0x10,
105 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
106 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
107 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
108 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
109 TP_NVRAM_MASK_MUTE = 0x40,
110 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
111 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
112 TP_NVRAM_POS_LEVEL_VOLUME = 0,
116 #define TPACPI_ACPI_HKEY_HID "IBM0068"
119 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
120 #define TPACPI_HKEY_INPUT_VERSION 0x4101
123 /****************************************************************************
127 #define TPACPI_NAME "thinkpad"
128 #define TPACPI_DESC "ThinkPad ACPI Extras"
129 #define TPACPI_FILE TPACPI_NAME "_acpi"
130 #define TPACPI_URL "http://ibm-acpi.sf.net/"
131 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
133 #define TPACPI_PROC_DIR "ibm"
134 #define TPACPI_ACPI_EVENT_PREFIX "ibm"
135 #define TPACPI_DRVR_NAME TPACPI_FILE
136 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
138 #define TPACPI_MAX_ACPI_ARGS 3
141 #define TPACPI_LOG TPACPI_FILE ": "
142 #define TPACPI_ERR KERN_ERR TPACPI_LOG
143 #define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
144 #define TPACPI_INFO KERN_INFO TPACPI_LOG
145 #define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
147 #define TPACPI_DBG_ALL 0xffff
148 #define TPACPI_DBG_ALL 0xffff
149 #define TPACPI_DBG_INIT 0x0001
150 #define TPACPI_DBG_EXIT 0x0002
151 #define dbg_printk(a_dbg_level, format, arg...) \
152 do { if (dbg_level & a_dbg_level) \
153 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
155 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
156 #define vdbg_printk(a_dbg_level, format, arg...) \
157 dbg_printk(a_dbg_level, format, ## arg)
158 static const char *str_supported(int is_supported);
160 #define vdbg_printk(a_dbg_level, format, arg...)
163 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
164 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
165 #define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
168 /****************************************************************************
169 * Driver-wide structs and misc. variables
174 struct tp_acpi_drv_struct {
175 const struct acpi_device_id *hid;
176 struct acpi_driver *driver;
178 void (*notify) (struct ibm_struct *, u32);
181 struct acpi_device *device;
187 int (*read) (char *);
188 int (*write) (char *);
190 void (*resume) (void);
191 void (*suspend) (pm_message_t state);
193 struct list_head all_drivers;
195 struct tp_acpi_drv_struct *acpi;
198 u8 acpi_driver_registered:1;
199 u8 acpi_notify_installed:1;
206 struct ibm_init_struct {
209 int (*init) (struct ibm_init_struct *);
210 struct ibm_struct *data;
214 #ifdef CONFIG_THINKPAD_ACPI_BAY
226 u32 bright_16levels:1;
228 u32 fan_ctrl_status_undef:1;
229 u32 input_device_registered:1;
230 u32 platform_drv_registered:1;
231 u32 platform_drv_attrs_registered:1;
232 u32 sensors_pdrv_registered:1;
233 u32 sensors_pdrv_attrs_registered:1;
234 u32 sensors_pdev_attrs_registered:1;
235 u32 hotkey_poll_active:1;
238 struct thinkpad_id_data {
239 unsigned int vendor; /* ThinkPad vendor:
240 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
242 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
243 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
245 u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
250 static struct thinkpad_id_data thinkpad_id;
253 TPACPI_LIFE_INIT = 0,
258 static int experimental;
259 static u32 dbg_level;
261 /****************************************************************************
262 ****************************************************************************
264 * ACPI Helpers and device model
266 ****************************************************************************
267 ****************************************************************************/
269 /*************************************************************************
273 static acpi_handle root_handle;
275 #define TPACPI_HANDLE(object, parent, paths...) \
276 static acpi_handle object##_handle; \
277 static acpi_handle *object##_parent = &parent##_handle; \
278 static char *object##_path; \
279 static char *object##_paths[] = { paths }
281 TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
282 "\\_SB.PCI.ISA.EC", /* 570 */
283 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
284 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
285 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
286 "\\_SB.PCI0.ICH3.EC0", /* R31 */
287 "\\_SB.PCI0.LPC.EC", /* all others */
290 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
291 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
293 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
295 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
296 "\\CMS", /* R40, R40e */
299 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
300 "^HKEY", /* R30, R31 */
301 "HKEY", /* all others */
305 /*************************************************************************
309 static int acpi_evalf(acpi_handle handle,
310 void *res, char *method, char *fmt, ...)
313 struct acpi_object_list params;
314 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
315 struct acpi_buffer result, *resultp;
316 union acpi_object out_obj;
324 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
337 params.pointer = &in_objs[0];
344 in_objs[params.count].integer.value = va_arg(ap, int);
345 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
347 /* add more types as needed */
349 printk(TPACPI_ERR "acpi_evalf() called "
350 "with invalid format character '%c'\n", c);
356 if (res_type != 'v') {
357 result.length = sizeof(out_obj);
358 result.pointer = &out_obj;
363 status = acpi_evaluate_object(handle, method, ¶ms, resultp);
368 *(int *)res = out_obj.integer.value;
369 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
372 success = status == AE_OK;
374 /* add more types as needed */
376 printk(TPACPI_ERR "acpi_evalf() called "
377 "with invalid format character '%c'\n", res_type);
381 if (!success && !quiet)
382 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
383 method, fmt0, status);
388 static int acpi_ec_read(int i, u8 *p)
393 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
397 if (ec_read(i, p) < 0)
404 static int acpi_ec_write(int i, u8 v)
407 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
410 if (ec_write(i, v) < 0)
417 static int _sta(acpi_handle handle)
421 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
427 static int issue_thinkpad_cmos_command(int cmos_cmd)
432 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
438 /*************************************************************************
442 #define TPACPI_ACPIHANDLE_INIT(object) \
443 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
444 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
446 static void drv_acpi_handle_init(char *name,
447 acpi_handle *handle, acpi_handle parent,
448 char **paths, int num_paths, char **path)
453 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
456 for (i = 0; i < num_paths; i++) {
457 status = acpi_get_handle(parent, paths[i], handle);
458 if (ACPI_SUCCESS(status)) {
460 dbg_printk(TPACPI_DBG_INIT,
461 "Found ACPI handle %s for %s\n",
467 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
472 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
474 struct ibm_struct *ibm = data;
476 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
479 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
482 ibm->acpi->notify(ibm, event);
485 static int __init setup_acpi_notify(struct ibm_struct *ibm)
492 if (!*ibm->acpi->handle)
495 vdbg_printk(TPACPI_DBG_INIT,
496 "setting up ACPI notify for %s\n", ibm->name);
498 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
500 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
505 acpi_driver_data(ibm->acpi->device) = ibm;
506 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
507 TPACPI_ACPI_EVENT_PREFIX,
510 status = acpi_install_notify_handler(*ibm->acpi->handle,
511 ibm->acpi->type, dispatch_acpi_notify, ibm);
512 if (ACPI_FAILURE(status)) {
513 if (status == AE_ALREADY_EXISTS) {
515 "another device driver is already "
516 "handling %s events\n", ibm->name);
519 "acpi_install_notify_handler(%s) failed: %d\n",
524 ibm->flags.acpi_notify_installed = 1;
528 static int __init tpacpi_device_add(struct acpi_device *device)
533 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
537 dbg_printk(TPACPI_DBG_INIT,
538 "registering %s as an ACPI driver\n", ibm->name);
542 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
543 if (!ibm->acpi->driver) {
544 printk(TPACPI_ERR "kzalloc(ibm->driver) failed\n");
548 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
549 ibm->acpi->driver->ids = ibm->acpi->hid;
551 ibm->acpi->driver->ops.add = &tpacpi_device_add;
553 rc = acpi_bus_register_driver(ibm->acpi->driver);
555 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
557 kfree(ibm->acpi->driver);
558 ibm->acpi->driver = NULL;
560 ibm->flags.acpi_driver_registered = 1;
566 /****************************************************************************
567 ****************************************************************************
571 ****************************************************************************
572 ****************************************************************************/
574 static int dispatch_procfs_read(char *page, char **start, off_t off,
575 int count, int *eof, void *data)
577 struct ibm_struct *ibm = data;
580 if (!ibm || !ibm->read)
583 len = ibm->read(page);
587 if (len <= off + count)
599 static int dispatch_procfs_write(struct file *file,
600 const char __user *userbuf,
601 unsigned long count, void *data)
603 struct ibm_struct *ibm = data;
607 if (!ibm || !ibm->write)
610 kernbuf = kmalloc(count + 2, GFP_KERNEL);
614 if (copy_from_user(kernbuf, userbuf, count)) {
620 strcat(kernbuf, ",");
621 ret = ibm->write(kernbuf);
630 static char *next_cmd(char **cmds)
635 while ((end = strchr(start, ',')) && end == start)
647 /****************************************************************************
648 ****************************************************************************
650 * Device model: input, hwmon and platform
652 ****************************************************************************
653 ****************************************************************************/
655 static struct platform_device *tpacpi_pdev;
656 static struct platform_device *tpacpi_sensors_pdev;
657 static struct device *tpacpi_hwmon;
658 static struct input_dev *tpacpi_inputdev;
659 static struct mutex tpacpi_inputdev_send_mutex;
660 static LIST_HEAD(tpacpi_all_drivers);
662 static int tpacpi_suspend_handler(struct platform_device *pdev,
665 struct ibm_struct *ibm, *itmp;
667 list_for_each_entry_safe(ibm, itmp,
671 (ibm->suspend)(state);
677 static int tpacpi_resume_handler(struct platform_device *pdev)
679 struct ibm_struct *ibm, *itmp;
681 list_for_each_entry_safe(ibm, itmp,
691 static struct platform_driver tpacpi_pdriver = {
693 .name = TPACPI_DRVR_NAME,
694 .owner = THIS_MODULE,
696 .suspend = tpacpi_suspend_handler,
697 .resume = tpacpi_resume_handler,
700 static struct platform_driver tpacpi_hwmon_pdriver = {
702 .name = TPACPI_HWMON_DRVR_NAME,
703 .owner = THIS_MODULE,
707 /*************************************************************************
708 * sysfs support helpers
711 struct attribute_set {
712 unsigned int members, max_members;
713 struct attribute_group group;
716 struct attribute_set_obj {
717 struct attribute_set s;
719 } __attribute__((packed));
721 static struct attribute_set *create_attr_set(unsigned int max_members,
724 struct attribute_set_obj *sobj;
726 if (max_members == 0)
729 /* Allocates space for implicit NULL at the end too */
730 sobj = kzalloc(sizeof(struct attribute_set_obj) +
731 max_members * sizeof(struct attribute *),
735 sobj->s.max_members = max_members;
736 sobj->s.group.attrs = &sobj->a;
737 sobj->s.group.name = name;
742 #define destroy_attr_set(_set) \
745 /* not multi-threaded safe, use it in a single thread per set */
746 static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
751 if (s->members >= s->max_members)
754 s->group.attrs[s->members] = attr;
760 static int add_many_to_attr_set(struct attribute_set *s,
761 struct attribute **attr,
766 for (i = 0; i < count; i++) {
767 res = add_to_attr_set(s, attr[i]);
775 static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
777 sysfs_remove_group(kobj, &s->group);
781 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
782 sysfs_create_group(_kobj, &_attr_set->group)
784 static int parse_strtoul(const char *buf,
785 unsigned long max, unsigned long *value)
789 while (*buf && isspace(*buf))
791 *value = simple_strtoul(buf, &endp, 0);
792 while (*endp && isspace(*endp))
794 if (*endp || *value > max)
800 /*************************************************************************
801 * thinkpad-acpi driver attributes
804 /* interface_version --------------------------------------------------- */
805 static ssize_t tpacpi_driver_interface_version_show(
806 struct device_driver *drv,
809 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
812 static DRIVER_ATTR(interface_version, S_IRUGO,
813 tpacpi_driver_interface_version_show, NULL);
815 /* debug_level --------------------------------------------------------- */
816 static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
819 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
822 static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
823 const char *buf, size_t count)
827 if (parse_strtoul(buf, 0xffff, &t))
835 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
836 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
838 /* version ------------------------------------------------------------- */
839 static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
842 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
843 TPACPI_DESC, TPACPI_VERSION);
846 static DRIVER_ATTR(version, S_IRUGO,
847 tpacpi_driver_version_show, NULL);
849 /* --------------------------------------------------------------------- */
851 static struct driver_attribute *tpacpi_driver_attributes[] = {
852 &driver_attr_debug_level, &driver_attr_version,
853 &driver_attr_interface_version,
856 static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
862 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
863 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
870 static void tpacpi_remove_driver_attributes(struct device_driver *drv)
874 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
875 driver_remove_file(drv, tpacpi_driver_attributes[i]);
878 /****************************************************************************
879 ****************************************************************************
883 ****************************************************************************
884 ****************************************************************************/
886 /*************************************************************************
887 * thinkpad-acpi init subdriver
890 static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
892 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
893 printk(TPACPI_INFO "%s\n", TPACPI_URL);
895 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
896 (thinkpad_id.bios_version_str) ?
897 thinkpad_id.bios_version_str : "unknown",
898 (thinkpad_id.ec_version_str) ?
899 thinkpad_id.ec_version_str : "unknown");
901 if (thinkpad_id.vendor && thinkpad_id.model_str)
902 printk(TPACPI_INFO "%s %s\n",
903 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
904 "IBM" : ((thinkpad_id.vendor ==
905 PCI_VENDOR_ID_LENOVO) ?
906 "Lenovo" : "Unknown vendor"),
907 thinkpad_id.model_str);
912 static int thinkpad_acpi_driver_read(char *p)
916 len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC);
917 len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION);
922 static struct ibm_struct thinkpad_acpi_driver_data = {
924 .read = thinkpad_acpi_driver_read,
927 /*************************************************************************
931 enum { /* hot key scan codes (derived from ACPI DSDT) */
932 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
933 TP_ACPI_HOTKEYSCAN_FNF2,
934 TP_ACPI_HOTKEYSCAN_FNF3,
935 TP_ACPI_HOTKEYSCAN_FNF4,
936 TP_ACPI_HOTKEYSCAN_FNF5,
937 TP_ACPI_HOTKEYSCAN_FNF6,
938 TP_ACPI_HOTKEYSCAN_FNF7,
939 TP_ACPI_HOTKEYSCAN_FNF8,
940 TP_ACPI_HOTKEYSCAN_FNF9,
941 TP_ACPI_HOTKEYSCAN_FNF10,
942 TP_ACPI_HOTKEYSCAN_FNF11,
943 TP_ACPI_HOTKEYSCAN_FNF12,
944 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
945 TP_ACPI_HOTKEYSCAN_FNINSERT,
946 TP_ACPI_HOTKEYSCAN_FNDELETE,
947 TP_ACPI_HOTKEYSCAN_FNHOME,
948 TP_ACPI_HOTKEYSCAN_FNEND,
949 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
950 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
951 TP_ACPI_HOTKEYSCAN_FNSPACE,
952 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
953 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
954 TP_ACPI_HOTKEYSCAN_MUTE,
955 TP_ACPI_HOTKEYSCAN_THINKPAD,
958 enum { /* Keys available through NVRAM polling */
959 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
960 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
963 enum { /* Positions of some of the keys in hotkey masks */
964 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
965 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
966 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
967 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
968 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
969 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
970 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
971 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
972 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
973 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
974 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
977 enum { /* NVRAM to ACPI HKEY group map */
978 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
979 TP_ACPI_HKEY_ZOOM_MASK |
980 TP_ACPI_HKEY_DISPSWTCH_MASK |
981 TP_ACPI_HKEY_HIBERNATE_MASK,
982 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
983 TP_ACPI_HKEY_BRGHTDWN_MASK,
984 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
985 TP_ACPI_HKEY_VOLDWN_MASK |
986 TP_ACPI_HKEY_MUTE_MASK,
989 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
990 struct tp_nvram_state {
991 u16 thinkpad_toggle:1;
993 u16 display_toggle:1;
994 u16 thinklight_toggle:1;
995 u16 hibernate_toggle:1;
996 u16 displayexp_toggle:1;
998 u16 brightness_toggle:1;
1002 u8 brightness_level;
1006 static struct task_struct *tpacpi_hotkey_task;
1007 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1008 static int hotkey_poll_freq = 10; /* Hz */
1009 static struct mutex hotkey_thread_mutex;
1010 static struct mutex hotkey_thread_data_mutex;
1011 static unsigned int hotkey_config_change;
1013 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1015 #define hotkey_source_mask 0U
1017 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1019 static struct mutex hotkey_mutex;
1021 static enum { /* Reasons for waking up */
1022 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1023 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1024 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1025 } hotkey_wakeup_reason;
1027 static int hotkey_autosleep_ack;
1029 static int hotkey_orig_status;
1030 static u32 hotkey_orig_mask;
1031 static u32 hotkey_all_mask;
1032 static u32 hotkey_reserved_mask;
1033 static u32 hotkey_mask;
1035 static unsigned int hotkey_report_mode;
1037 static u16 *hotkey_keycode_map;
1039 static struct attribute_set *hotkey_dev_attributes;
1041 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1042 #define HOTKEY_CONFIG_CRITICAL_START \
1044 mutex_lock(&hotkey_thread_data_mutex); \
1045 hotkey_config_change++; \
1047 #define HOTKEY_CONFIG_CRITICAL_END \
1048 mutex_unlock(&hotkey_thread_data_mutex);
1050 #define HOTKEY_CONFIG_CRITICAL_START
1051 #define HOTKEY_CONFIG_CRITICAL_END
1052 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1054 static int hotkey_get_wlsw(int *status)
1056 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
1062 * Call with hotkey_mutex held
1064 static int hotkey_mask_get(void)
1068 if (tp_features.hotkey_mask) {
1069 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
1072 hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
1078 * Call with hotkey_mutex held
1080 static int hotkey_mask_set(u32 mask)
1085 if (tp_features.hotkey_mask) {
1086 HOTKEY_CONFIG_CRITICAL_START
1087 for (i = 0; i < 32; i++) {
1089 /* enable in firmware mask only keys not in NVRAM
1090 * mode, but enable the key in the cached hotkey_mask
1091 * regardless of mode, or the key will end up
1092 * disabled by hotkey_mask_get() */
1093 if (!acpi_evalf(hkey_handle,
1094 NULL, "MHKM", "vdd", i + 1,
1095 !!((mask & ~hotkey_source_mask) & m))) {
1099 hotkey_mask = (hotkey_mask & ~m) | (mask & m);
1102 HOTKEY_CONFIG_CRITICAL_END
1104 /* hotkey_mask_get must be called unconditionally below */
1105 if (!hotkey_mask_get() && !rc &&
1106 (hotkey_mask & ~hotkey_source_mask) !=
1107 (mask & ~hotkey_source_mask)) {
1108 printk(TPACPI_NOTICE
1109 "requested hot key mask 0x%08x, but "
1110 "firmware forced it to 0x%08x\n",
1114 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1115 HOTKEY_CONFIG_CRITICAL_START
1116 hotkey_mask = mask & hotkey_source_mask;
1117 HOTKEY_CONFIG_CRITICAL_END
1119 if (hotkey_mask != mask) {
1120 printk(TPACPI_NOTICE
1121 "requested hot key mask 0x%08x, "
1122 "forced to 0x%08x (NVRAM poll mask is "
1123 "0x%08x): no firmware mask support\n",
1124 mask, hotkey_mask, hotkey_source_mask);
1129 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1135 static int hotkey_status_get(int *status)
1137 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1143 static int hotkey_status_set(int status)
1145 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
1151 static void tpacpi_input_send_radiosw(void)
1155 mutex_lock(&tpacpi_inputdev_send_mutex);
1157 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
1158 input_report_switch(tpacpi_inputdev,
1160 input_sync(tpacpi_inputdev);
1163 mutex_unlock(&tpacpi_inputdev_send_mutex);
1166 static void tpacpi_input_send_key(unsigned int scancode)
1168 unsigned int keycode;
1170 keycode = hotkey_keycode_map[scancode];
1172 if (keycode != KEY_RESERVED) {
1173 mutex_lock(&tpacpi_inputdev_send_mutex);
1175 input_report_key(tpacpi_inputdev, keycode, 1);
1176 if (keycode == KEY_UNKNOWN)
1177 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1179 input_sync(tpacpi_inputdev);
1181 input_report_key(tpacpi_inputdev, keycode, 0);
1182 if (keycode == KEY_UNKNOWN)
1183 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1185 input_sync(tpacpi_inputdev);
1187 mutex_unlock(&tpacpi_inputdev_send_mutex);
1191 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1192 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
1194 static void tpacpi_hotkey_send_key(unsigned int scancode)
1196 tpacpi_input_send_key(scancode);
1197 if (hotkey_report_mode < 2) {
1198 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
1199 0x80, 0x1001 + scancode);
1203 static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
1207 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
1208 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
1209 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
1210 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
1211 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
1212 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
1214 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
1215 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
1216 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
1218 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
1219 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
1220 n->displayexp_toggle =
1221 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
1223 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
1224 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
1225 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
1226 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
1227 n->brightness_toggle =
1228 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
1230 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
1231 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
1232 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
1233 >> TP_NVRAM_POS_LEVEL_VOLUME;
1234 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
1235 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
1239 #define TPACPI_COMPARE_KEY(__scancode, __member) \
1241 if ((mask & (1 << __scancode)) && \
1242 oldn->__member != newn->__member) \
1243 tpacpi_hotkey_send_key(__scancode); \
1246 #define TPACPI_MAY_SEND_KEY(__scancode) \
1247 do { if (mask & (1 << __scancode)) \
1248 tpacpi_hotkey_send_key(__scancode); } while (0)
1250 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
1251 struct tp_nvram_state *newn,
1254 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
1255 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
1256 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
1257 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
1259 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
1261 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
1264 if (oldn->volume_toggle != newn->volume_toggle) {
1265 if (oldn->mute != newn->mute) {
1266 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1268 if (oldn->volume_level > newn->volume_level) {
1269 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1270 } else if (oldn->volume_level < newn->volume_level) {
1271 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1272 } else if (oldn->mute == newn->mute) {
1273 /* repeated key presses that didn't change state */
1275 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1276 } else if (newn->volume_level != 0) {
1277 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1279 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1284 /* handle brightness */
1285 if (oldn->brightness_toggle != newn->brightness_toggle) {
1286 if (oldn->brightness_level < newn->brightness_level) {
1287 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1288 } else if (oldn->brightness_level > newn->brightness_level) {
1289 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1291 /* repeated key presses that didn't change state */
1292 if (newn->brightness_level != 0) {
1293 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1295 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1301 #undef TPACPI_COMPARE_KEY
1302 #undef TPACPI_MAY_SEND_KEY
1304 static int hotkey_kthread(void *data)
1306 struct tp_nvram_state s[2];
1308 unsigned int si, so;
1310 unsigned int change_detector, must_reset;
1312 mutex_lock(&hotkey_thread_mutex);
1314 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
1323 /* Initial state for compares */
1324 mutex_lock(&hotkey_thread_data_mutex);
1325 change_detector = hotkey_config_change;
1326 mask = hotkey_source_mask & hotkey_mask;
1327 mutex_unlock(&hotkey_thread_data_mutex);
1328 hotkey_read_nvram(&s[so], mask);
1330 while (!kthread_should_stop() && hotkey_poll_freq) {
1332 t = 1000/hotkey_poll_freq;
1333 t = msleep_interruptible(t);
1334 if (unlikely(kthread_should_stop()))
1336 must_reset = try_to_freeze();
1337 if (t > 0 && !must_reset)
1340 mutex_lock(&hotkey_thread_data_mutex);
1341 if (must_reset || hotkey_config_change != change_detector) {
1342 /* forget old state on thaw or config change */
1345 change_detector = hotkey_config_change;
1347 mask = hotkey_source_mask & hotkey_mask;
1348 mutex_unlock(&hotkey_thread_data_mutex);
1351 hotkey_read_nvram(&s[si], mask);
1352 if (likely(si != so)) {
1353 hotkey_compare_and_issue_event(&s[so], &s[si],
1363 mutex_unlock(&hotkey_thread_mutex);
1367 static void hotkey_poll_stop_sync(void)
1369 if (tpacpi_hotkey_task) {
1370 if (frozen(tpacpi_hotkey_task) ||
1371 freezing(tpacpi_hotkey_task))
1372 thaw_process(tpacpi_hotkey_task);
1374 kthread_stop(tpacpi_hotkey_task);
1375 tpacpi_hotkey_task = NULL;
1376 mutex_lock(&hotkey_thread_mutex);
1377 /* at this point, the thread did exit */
1378 mutex_unlock(&hotkey_thread_mutex);
1382 /* call with hotkey_mutex held */
1383 static void hotkey_poll_setup(int may_warn)
1385 if ((hotkey_source_mask & hotkey_mask) != 0 &&
1386 hotkey_poll_freq > 0 &&
1387 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
1388 if (!tpacpi_hotkey_task) {
1389 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
1392 if (IS_ERR(tpacpi_hotkey_task)) {
1393 tpacpi_hotkey_task = NULL;
1395 "could not create kernel thread "
1396 "for hotkey polling\n");
1400 hotkey_poll_stop_sync();
1402 hotkey_source_mask != 0 && hotkey_poll_freq == 0) {
1403 printk(TPACPI_NOTICE
1404 "hot keys 0x%08x require polling, "
1405 "which is currently disabled\n",
1406 hotkey_source_mask);
1411 static void hotkey_poll_setup_safe(int may_warn)
1413 mutex_lock(&hotkey_mutex);
1414 hotkey_poll_setup(may_warn);
1415 mutex_unlock(&hotkey_mutex);
1418 static int hotkey_inputdev_open(struct input_dev *dev)
1420 switch (tpacpi_lifecycle) {
1421 case TPACPI_LIFE_INIT:
1423 * hotkey_init will call hotkey_poll_setup_safe
1424 * at the appropriate moment
1427 case TPACPI_LIFE_EXITING:
1429 case TPACPI_LIFE_RUNNING:
1430 hotkey_poll_setup_safe(0);
1434 /* Should only happen if tpacpi_lifecycle is corrupt */
1439 static void hotkey_inputdev_close(struct input_dev *dev)
1441 /* disable hotkey polling when possible */
1442 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
1443 hotkey_poll_setup_safe(0);
1445 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1447 /* sysfs hotkey enable ------------------------------------------------- */
1448 static ssize_t hotkey_enable_show(struct device *dev,
1449 struct device_attribute *attr,
1454 res = hotkey_status_get(&status);
1458 return snprintf(buf, PAGE_SIZE, "%d\n", status);
1461 static ssize_t hotkey_enable_store(struct device *dev,
1462 struct device_attribute *attr,
1463 const char *buf, size_t count)
1468 if (parse_strtoul(buf, 1, &t))
1471 res = hotkey_status_set(t);
1473 return (res) ? res : count;
1476 static struct device_attribute dev_attr_hotkey_enable =
1477 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
1478 hotkey_enable_show, hotkey_enable_store);
1480 /* sysfs hotkey mask --------------------------------------------------- */
1481 static ssize_t hotkey_mask_show(struct device *dev,
1482 struct device_attribute *attr,
1487 if (mutex_lock_interruptible(&hotkey_mutex))
1488 return -ERESTARTSYS;
1489 res = hotkey_mask_get();
1490 mutex_unlock(&hotkey_mutex);
1493 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
1496 static ssize_t hotkey_mask_store(struct device *dev,
1497 struct device_attribute *attr,
1498 const char *buf, size_t count)
1503 if (parse_strtoul(buf, 0xffffffffUL, &t))
1506 if (mutex_lock_interruptible(&hotkey_mutex))
1507 return -ERESTARTSYS;
1509 res = hotkey_mask_set(t);
1511 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1512 hotkey_poll_setup(1);
1515 mutex_unlock(&hotkey_mutex);
1517 return (res) ? res : count;
1520 static struct device_attribute dev_attr_hotkey_mask =
1521 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
1522 hotkey_mask_show, hotkey_mask_store);
1524 /* sysfs hotkey bios_enabled ------------------------------------------- */
1525 static ssize_t hotkey_bios_enabled_show(struct device *dev,
1526 struct device_attribute *attr,
1529 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
1532 static struct device_attribute dev_attr_hotkey_bios_enabled =
1533 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
1535 /* sysfs hotkey bios_mask ---------------------------------------------- */
1536 static ssize_t hotkey_bios_mask_show(struct device *dev,
1537 struct device_attribute *attr,
1540 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
1543 static struct device_attribute dev_attr_hotkey_bios_mask =
1544 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
1546 /* sysfs hotkey all_mask ----------------------------------------------- */
1547 static ssize_t hotkey_all_mask_show(struct device *dev,
1548 struct device_attribute *attr,
1551 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
1552 hotkey_all_mask | hotkey_source_mask);
1555 static struct device_attribute dev_attr_hotkey_all_mask =
1556 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
1558 /* sysfs hotkey recommended_mask --------------------------------------- */
1559 static ssize_t hotkey_recommended_mask_show(struct device *dev,
1560 struct device_attribute *attr,
1563 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
1564 (hotkey_all_mask | hotkey_source_mask)
1565 & ~hotkey_reserved_mask);
1568 static struct device_attribute dev_attr_hotkey_recommended_mask =
1569 __ATTR(hotkey_recommended_mask, S_IRUGO,
1570 hotkey_recommended_mask_show, NULL);
1572 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1574 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
1575 static ssize_t hotkey_source_mask_show(struct device *dev,
1576 struct device_attribute *attr,
1579 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
1582 static ssize_t hotkey_source_mask_store(struct device *dev,
1583 struct device_attribute *attr,
1584 const char *buf, size_t count)
1588 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
1589 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
1592 if (mutex_lock_interruptible(&hotkey_mutex))
1593 return -ERESTARTSYS;
1595 HOTKEY_CONFIG_CRITICAL_START
1596 hotkey_source_mask = t;
1597 HOTKEY_CONFIG_CRITICAL_END
1599 hotkey_poll_setup(1);
1601 mutex_unlock(&hotkey_mutex);
1606 static struct device_attribute dev_attr_hotkey_source_mask =
1607 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
1608 hotkey_source_mask_show, hotkey_source_mask_store);
1610 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
1611 static ssize_t hotkey_poll_freq_show(struct device *dev,
1612 struct device_attribute *attr,
1615 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
1618 static ssize_t hotkey_poll_freq_store(struct device *dev,
1619 struct device_attribute *attr,
1620 const char *buf, size_t count)
1624 if (parse_strtoul(buf, 25, &t))
1627 if (mutex_lock_interruptible(&hotkey_mutex))
1628 return -ERESTARTSYS;
1630 hotkey_poll_freq = t;
1632 hotkey_poll_setup(1);
1633 mutex_unlock(&hotkey_mutex);
1638 static struct device_attribute dev_attr_hotkey_poll_freq =
1639 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
1640 hotkey_poll_freq_show, hotkey_poll_freq_store);
1642 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1644 /* sysfs hotkey radio_sw ----------------------------------------------- */
1645 static ssize_t hotkey_radio_sw_show(struct device *dev,
1646 struct device_attribute *attr,
1650 res = hotkey_get_wlsw(&s);
1654 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
1657 static struct device_attribute dev_attr_hotkey_radio_sw =
1658 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
1660 /* sysfs hotkey report_mode -------------------------------------------- */
1661 static ssize_t hotkey_report_mode_show(struct device *dev,
1662 struct device_attribute *attr,
1665 return snprintf(buf, PAGE_SIZE, "%d\n",
1666 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
1669 static struct device_attribute dev_attr_hotkey_report_mode =
1670 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
1672 /* sysfs wakeup reason ------------------------------------------------- */
1673 static ssize_t hotkey_wakeup_reason_show(struct device *dev,
1674 struct device_attribute *attr,
1677 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
1680 static struct device_attribute dev_attr_hotkey_wakeup_reason =
1681 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
1683 /* sysfs wakeup hotunplug_complete ------------------------------------- */
1684 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
1685 struct device_attribute *attr,
1688 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
1691 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
1692 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
1693 hotkey_wakeup_hotunplug_complete_show, NULL);
1695 /* --------------------------------------------------------------------- */
1697 static struct attribute *hotkey_attributes[] __initdata = {
1698 &dev_attr_hotkey_enable.attr,
1699 &dev_attr_hotkey_bios_enabled.attr,
1700 &dev_attr_hotkey_report_mode.attr,
1701 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1702 &dev_attr_hotkey_mask.attr,
1703 &dev_attr_hotkey_all_mask.attr,
1704 &dev_attr_hotkey_recommended_mask.attr,
1705 &dev_attr_hotkey_source_mask.attr,
1706 &dev_attr_hotkey_poll_freq.attr,
1710 static struct attribute *hotkey_mask_attributes[] __initdata = {
1711 &dev_attr_hotkey_bios_mask.attr,
1712 #ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1713 &dev_attr_hotkey_mask.attr,
1714 &dev_attr_hotkey_all_mask.attr,
1715 &dev_attr_hotkey_recommended_mask.attr,
1717 &dev_attr_hotkey_wakeup_reason.attr,
1718 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
1721 static int __init hotkey_init(struct ibm_init_struct *iibm)
1723 /* Requirements for changing the default keymaps:
1725 * 1. Many of the keys are mapped to KEY_RESERVED for very
1726 * good reasons. Do not change them unless you have deep
1727 * knowledge on the IBM and Lenovo ThinkPad firmware for
1728 * the various ThinkPad models. The driver behaves
1729 * differently for KEY_RESERVED: such keys have their
1730 * hot key mask *unset* in mask_recommended, and also
1731 * in the initial hot key mask programmed into the
1732 * firmware at driver load time, which means the firm-
1733 * ware may react very differently if you change them to
1736 * 2. You must be subscribed to the linux-thinkpad and
1737 * ibm-acpi-devel mailing lists, and you should read the
1738 * list archives since 2007 if you want to change the
1739 * keymaps. This requirement exists so that you will
1740 * know the past history of problems with the thinkpad-
1741 * acpi driver keymaps, and also that you will be
1742 * listening to any bug reports;
1744 * 3. Do not send thinkpad-acpi specific patches directly to
1745 * for merging, *ever*. Send them to the linux-acpi
1746 * mailinglist for comments. Merging is to be done only
1747 * through acpi-test and the ACPI maintainer.
1749 * If the above is too much to ask, don't change the keymap.
1750 * Ask the thinkpad-acpi maintainer to do it, instead.
1752 static u16 ibm_keycode_map[] __initdata = {
1753 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
1754 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
1755 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
1756 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
1758 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
1759 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
1760 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
1761 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
1763 /* brightness: firmware always reacts to them, unless
1764 * X.org did some tricks in the radeon BIOS scratch
1765 * registers of *some* models */
1766 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
1767 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
1769 /* Thinklight: firmware always react to it */
1770 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
1772 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
1773 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
1775 /* Volume: firmware always react to it and reprograms
1776 * the built-in *extra* mixer. Never map it to control
1777 * another mixer by default. */
1778 KEY_RESERVED, /* 0x14: VOLUME UP */
1779 KEY_RESERVED, /* 0x15: VOLUME DOWN */
1780 KEY_RESERVED, /* 0x16: MUTE */
1782 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
1784 /* (assignments unknown, please report if found) */
1785 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1786 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1788 static u16 lenovo_keycode_map[] __initdata = {
1789 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
1790 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
1791 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
1792 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
1794 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
1795 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
1796 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
1797 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
1799 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
1800 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
1802 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
1804 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
1805 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
1807 /* Volume: z60/z61, T60 (BIOS version?): firmware always
1808 * react to it and reprograms the built-in *extra* mixer.
1809 * Never map it to control another mixer by default.
1811 * T60?, T61, R60?, R61: firmware and EC tries to send
1812 * these over the regular keyboard, so these are no-ops,
1813 * but there are still weird bugs re. MUTE, so do not
1814 * change unless you get test reports from all Lenovo
1815 * models. May cause the BIOS to interfere with the
1818 KEY_RESERVED, /* 0x14: VOLUME UP */
1819 KEY_RESERVED, /* 0x15: VOLUME DOWN */
1820 KEY_RESERVED, /* 0x16: MUTE */
1822 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
1824 /* (assignments unknown, please report if found) */
1825 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1826 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1829 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
1830 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
1831 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
1837 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
1839 BUG_ON(!tpacpi_inputdev);
1840 BUG_ON(tpacpi_inputdev->open != NULL ||
1841 tpacpi_inputdev->close != NULL);
1843 TPACPI_ACPIHANDLE_INIT(hkey);
1844 mutex_init(&hotkey_mutex);
1846 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1847 mutex_init(&hotkey_thread_mutex);
1848 mutex_init(&hotkey_thread_data_mutex);
1851 /* hotkey not supported on 570 */
1852 tp_features.hotkey = hkey_handle != NULL;
1854 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
1855 str_supported(tp_features.hotkey));
1857 if (tp_features.hotkey) {
1858 hotkey_dev_attributes = create_attr_set(12, NULL);
1859 if (!hotkey_dev_attributes)
1861 res = add_many_to_attr_set(hotkey_dev_attributes,
1863 ARRAY_SIZE(hotkey_attributes));
1867 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1868 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
1869 for HKEY interface version 0x100 */
1870 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
1871 if ((hkeyv >> 8) != 1) {
1872 printk(TPACPI_ERR "unknown version of the "
1873 "HKEY interface: 0x%x\n", hkeyv);
1874 printk(TPACPI_ERR "please report this to %s\n",
1878 * MHKV 0x100 in A31, R40, R40e,
1879 * T4x, X31, and later
1881 tp_features.hotkey_mask = 1;
1885 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
1886 str_supported(tp_features.hotkey_mask));
1888 if (tp_features.hotkey_mask) {
1889 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
1892 "missing MHKA handler, "
1893 "please report this to %s\n",
1895 /* FN+F12, FN+F4, FN+F3 */
1896 hotkey_all_mask = 0x080cU;
1900 /* hotkey_source_mask *must* be zero for
1901 * the first hotkey_mask_get */
1902 res = hotkey_status_get(&hotkey_orig_status);
1903 if (!res && tp_features.hotkey_mask) {
1904 res = hotkey_mask_get();
1905 hotkey_orig_mask = hotkey_mask;
1907 res = add_many_to_attr_set(
1908 hotkey_dev_attributes,
1909 hotkey_mask_attributes,
1910 ARRAY_SIZE(hotkey_mask_attributes));
1914 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1915 if (tp_features.hotkey_mask) {
1916 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
1919 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
1922 vdbg_printk(TPACPI_DBG_INIT,
1923 "hotkey source mask 0x%08x, polling freq %d\n",
1924 hotkey_source_mask, hotkey_poll_freq);
1927 /* Not all thinkpads have a hardware radio switch */
1928 if (!res && acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
1929 tp_features.hotkey_wlsw = 1;
1931 "radio switch found; radios are %s\n",
1932 enabled(status, 0));
1933 res = add_to_attr_set(hotkey_dev_attributes,
1934 &dev_attr_hotkey_radio_sw.attr);
1938 res = register_attr_set_with_sysfs(
1939 hotkey_dev_attributes,
1940 &tpacpi_pdev->dev.kobj);
1944 /* Set up key map */
1946 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
1948 if (!hotkey_keycode_map) {
1950 "failed to allocate memory for key map\n");
1954 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
1955 dbg_printk(TPACPI_DBG_INIT,
1956 "using Lenovo default hot key map\n");
1957 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
1958 TPACPI_HOTKEY_MAP_SIZE);
1960 dbg_printk(TPACPI_DBG_INIT,
1961 "using IBM default hot key map\n");
1962 memcpy(hotkey_keycode_map, &ibm_keycode_map,
1963 TPACPI_HOTKEY_MAP_SIZE);
1966 set_bit(EV_KEY, tpacpi_inputdev->evbit);
1967 set_bit(EV_MSC, tpacpi_inputdev->evbit);
1968 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
1969 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
1970 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
1971 tpacpi_inputdev->keycode = hotkey_keycode_map;
1972 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
1973 if (hotkey_keycode_map[i] != KEY_RESERVED) {
1974 set_bit(hotkey_keycode_map[i],
1975 tpacpi_inputdev->keybit);
1977 if (i < sizeof(hotkey_reserved_mask)*8)
1978 hotkey_reserved_mask |= 1 << i;
1982 if (tp_features.hotkey_wlsw) {
1983 set_bit(EV_SW, tpacpi_inputdev->evbit);
1984 set_bit(SW_RADIO, tpacpi_inputdev->swbit);
1987 dbg_printk(TPACPI_DBG_INIT,
1988 "enabling hot key handling\n");
1989 res = hotkey_status_set(1);
1992 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
1993 & ~hotkey_reserved_mask)
1994 | hotkey_orig_mask);
1995 if (res < 0 && res != -ENXIO)
1998 dbg_printk(TPACPI_DBG_INIT,
1999 "legacy hot key reporting over procfs %s\n",
2000 (hotkey_report_mode < 2) ?
2001 "enabled" : "disabled");
2003 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2004 tpacpi_inputdev->open = &hotkey_inputdev_open;
2005 tpacpi_inputdev->close = &hotkey_inputdev_close;
2007 hotkey_poll_setup_safe(1);
2011 return (tp_features.hotkey)? 0 : 1;
2014 static void hotkey_exit(void)
2016 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2017 hotkey_poll_stop_sync();
2020 if (tp_features.hotkey) {
2021 dbg_printk(TPACPI_DBG_EXIT,
2022 "restoring original hot key mask\n");
2023 /* no short-circuit boolean operator below! */
2024 if ((hotkey_mask_set(hotkey_orig_mask) |
2025 hotkey_status_set(hotkey_orig_status)) != 0)
2027 "failed to restore hot key mask "
2028 "to BIOS defaults\n");
2031 if (hotkey_dev_attributes) {
2032 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2033 hotkey_dev_attributes = NULL;
2037 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
2040 unsigned int scancode;
2045 if (event != 0x80) {
2047 "unknown HKEY notification event %d\n", event);
2048 /* forward it to userspace, maybe it knows how to handle it */
2049 acpi_bus_generate_netlink_event(
2050 ibm->acpi->device->pnp.device_class,
2051 ibm->acpi->device->dev.bus_id,
2057 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
2058 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
2071 switch (hkey >> 12) {
2073 /* 0x1000-0x1FFF: key presses */
2074 scancode = hkey & 0xfff;
2075 if (scancode > 0 && scancode < 0x21) {
2077 if (!(hotkey_source_mask & (1 << scancode))) {
2078 tpacpi_input_send_key(scancode);
2090 case 0x2304: /* suspend, undock */
2091 case 0x2404: /* hibernation, undock */
2092 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
2095 case 0x2305: /* suspend, bay eject */
2096 case 0x2405: /* hibernation, bay eject */
2097 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
2103 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
2105 "woke up due to a hot-unplug "
2110 /* bay-related wakeups */
2111 if (hkey == 0x3003) {
2112 hotkey_autosleep_ack = 1;
2120 /* dock-related wakeups */
2121 if (hkey == 0x4003) {
2122 hotkey_autosleep_ack = 1;
2130 /* 0x5000-0x5FFF: human interface helpers */
2132 case 0x5010: /* Lenovo new BIOS: brightness changed */
2133 case 0x5009: /* X61t: swivel up (tablet mode) */
2134 case 0x500a: /* X61t: swivel down (normal mode) */
2135 case 0x500b: /* X61t: tablet pen inserted into bay */
2136 case 0x500c: /* X61t: tablet pen removed from bay */
2140 /* LID switch events. Do not propagate */
2148 /* 0x7000-0x7FFF: misc */
2149 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
2150 tpacpi_input_send_radiosw();
2154 /* fallthrough to default */
2159 printk(TPACPI_NOTICE
2160 "unhandled HKEY event 0x%04x\n", hkey);
2164 if (!ignore_acpi_ev &&
2165 (send_acpi_ev || hotkey_report_mode < 2)) {
2166 acpi_bus_generate_proc_event(ibm->acpi->device,
2170 /* netlink events */
2171 if (!ignore_acpi_ev && send_acpi_ev) {
2172 acpi_bus_generate_netlink_event(
2173 ibm->acpi->device->pnp.device_class,
2174 ibm->acpi->device->dev.bus_id,
2180 static void hotkey_suspend(pm_message_t state)
2182 /* Do these on suspend, we get the events on early resume! */
2183 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
2184 hotkey_autosleep_ack = 0;
2187 static void hotkey_resume(void)
2189 if (hotkey_mask_get())
2191 "error while trying to read hot key mask "
2193 tpacpi_input_send_radiosw();
2194 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2195 hotkey_poll_setup_safe(0);
2199 /* procfs -------------------------------------------------------------- */
2200 static int hotkey_read(char *p)
2205 if (!tp_features.hotkey) {
2206 len += sprintf(p + len, "status:\t\tnot supported\n");
2210 if (mutex_lock_interruptible(&hotkey_mutex))
2211 return -ERESTARTSYS;
2212 res = hotkey_status_get(&status);
2214 res = hotkey_mask_get();
2215 mutex_unlock(&hotkey_mutex);
2219 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
2220 if (tp_features.hotkey_mask) {
2221 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
2222 len += sprintf(p + len,
2223 "commands:\tenable, disable, reset, <mask>\n");
2225 len += sprintf(p + len, "mask:\t\tnot supported\n");
2226 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
2232 static int hotkey_write(char *buf)
2238 if (!tp_features.hotkey)
2241 if (mutex_lock_interruptible(&hotkey_mutex))
2242 return -ERESTARTSYS;
2248 while ((cmd = next_cmd(&buf))) {
2249 if (strlencmp(cmd, "enable") == 0) {
2251 } else if (strlencmp(cmd, "disable") == 0) {
2253 } else if (strlencmp(cmd, "reset") == 0) {
2254 status = hotkey_orig_status;
2255 mask = hotkey_orig_mask;
2256 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
2258 } else if (sscanf(cmd, "%x", &mask) == 1) {
2266 res = hotkey_status_set(status);
2268 if (!res && mask != hotkey_mask)
2269 res = hotkey_mask_set(mask);
2272 mutex_unlock(&hotkey_mutex);
2276 static const struct acpi_device_id ibm_htk_device_ids[] = {
2277 {TPACPI_ACPI_HKEY_HID, 0},
2281 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
2282 .hid = ibm_htk_device_ids,
2283 .notify = hotkey_notify,
2284 .handle = &hkey_handle,
2285 .type = ACPI_DEVICE_NOTIFY,
2288 static struct ibm_struct hotkey_driver_data = {
2290 .read = hotkey_read,
2291 .write = hotkey_write,
2292 .exit = hotkey_exit,
2293 .resume = hotkey_resume,
2294 .suspend = hotkey_suspend,
2295 .acpi = &ibm_hotkey_acpidriver,
2298 /*************************************************************************
2299 * Bluetooth subdriver
2303 /* ACPI GBDC/SBDC bits */
2304 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
2305 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
2306 TP_ACPI_BLUETOOTH_UNK = 0x04, /* unknown function */
2309 static int bluetooth_get_radiosw(void);
2310 static int bluetooth_set_radiosw(int radio_on);
2312 /* sysfs bluetooth enable ---------------------------------------------- */
2313 static ssize_t bluetooth_enable_show(struct device *dev,
2314 struct device_attribute *attr,
2319 status = bluetooth_get_radiosw();
2323 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
2326 static ssize_t bluetooth_enable_store(struct device *dev,
2327 struct device_attribute *attr,
2328 const char *buf, size_t count)
2333 if (parse_strtoul(buf, 1, &t))
2336 res = bluetooth_set_radiosw(t);
2338 return (res) ? res : count;
2341 static struct device_attribute dev_attr_bluetooth_enable =
2342 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
2343 bluetooth_enable_show, bluetooth_enable_store);
2345 /* --------------------------------------------------------------------- */
2347 static struct attribute *bluetooth_attributes[] = {
2348 &dev_attr_bluetooth_enable.attr,
2352 static const struct attribute_group bluetooth_attr_group = {
2353 .attrs = bluetooth_attributes,
2356 static int __init bluetooth_init(struct ibm_init_struct *iibm)
2361 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
2363 TPACPI_ACPIHANDLE_INIT(hkey);
2365 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2366 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
2367 tp_features.bluetooth = hkey_handle &&
2368 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
2370 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
2371 str_supported(tp_features.bluetooth),
2374 if (tp_features.bluetooth) {
2375 if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
2376 /* no bluetooth hardware present in system */
2377 tp_features.bluetooth = 0;
2378 dbg_printk(TPACPI_DBG_INIT,
2379 "bluetooth hardware not installed\n");
2381 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2382 &bluetooth_attr_group);
2388 return (tp_features.bluetooth)? 0 : 1;
2391 static void bluetooth_exit(void)
2393 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2394 &bluetooth_attr_group);
2397 static int bluetooth_get_radiosw(void)
2401 if (!tp_features.bluetooth)
2404 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
2407 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0);
2410 static int bluetooth_set_radiosw(int radio_on)
2414 if (!tp_features.bluetooth)
2417 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
2420 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
2422 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
2423 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
2429 /* procfs -------------------------------------------------------------- */
2430 static int bluetooth_read(char *p)
2433 int status = bluetooth_get_radiosw();
2435 if (!tp_features.bluetooth)
2436 len += sprintf(p + len, "status:\t\tnot supported\n");
2438 len += sprintf(p + len, "status:\t\t%s\n",
2439 (status)? "enabled" : "disabled");
2440 len += sprintf(p + len, "commands:\tenable, disable\n");
2446 static int bluetooth_write(char *buf)
2450 if (!tp_features.bluetooth)
2453 while ((cmd = next_cmd(&buf))) {
2454 if (strlencmp(cmd, "enable") == 0) {
2455 bluetooth_set_radiosw(1);
2456 } else if (strlencmp(cmd, "disable") == 0) {
2457 bluetooth_set_radiosw(0);
2465 static struct ibm_struct bluetooth_driver_data = {
2466 .name = "bluetooth",
2467 .read = bluetooth_read,
2468 .write = bluetooth_write,
2469 .exit = bluetooth_exit,
2472 /*************************************************************************
2477 /* ACPI GWAN/SWAN bits */
2478 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
2479 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
2480 TP_ACPI_WANCARD_UNK = 0x04, /* unknown function */
2483 static int wan_get_radiosw(void);
2484 static int wan_set_radiosw(int radio_on);
2486 /* sysfs wan enable ---------------------------------------------------- */
2487 static ssize_t wan_enable_show(struct device *dev,
2488 struct device_attribute *attr,
2493 status = wan_get_radiosw();
2497 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
2500 static ssize_t wan_enable_store(struct device *dev,
2501 struct device_attribute *attr,
2502 const char *buf, size_t count)
2507 if (parse_strtoul(buf, 1, &t))
2510 res = wan_set_radiosw(t);
2512 return (res) ? res : count;
2515 static struct device_attribute dev_attr_wan_enable =
2516 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
2517 wan_enable_show, wan_enable_store);
2519 /* --------------------------------------------------------------------- */
2521 static struct attribute *wan_attributes[] = {
2522 &dev_attr_wan_enable.attr,
2526 static const struct attribute_group wan_attr_group = {
2527 .attrs = wan_attributes,
2530 static int __init wan_init(struct ibm_init_struct *iibm)
2535 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
2537 TPACPI_ACPIHANDLE_INIT(hkey);
2539 tp_features.wan = hkey_handle &&
2540 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
2542 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
2543 str_supported(tp_features.wan),
2546 if (tp_features.wan) {
2547 if (!(status & TP_ACPI_WANCARD_HWPRESENT)) {
2548 /* no wan hardware present in system */
2549 tp_features.wan = 0;
2550 dbg_printk(TPACPI_DBG_INIT,
2551 "wan hardware not installed\n");
2553 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2560 return (tp_features.wan)? 0 : 1;
2563 static void wan_exit(void)
2565 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2569 static int wan_get_radiosw(void)
2573 if (!tp_features.wan)
2576 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
2579 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0);
2582 static int wan_set_radiosw(int radio_on)
2586 if (!tp_features.wan)
2589 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
2592 status |= TP_ACPI_WANCARD_RADIOSSW;
2594 status &= ~TP_ACPI_WANCARD_RADIOSSW;
2595 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
2601 /* procfs -------------------------------------------------------------- */
2602 static int wan_read(char *p)
2605 int status = wan_get_radiosw();
2607 if (!tp_features.wan)
2608 len += sprintf(p + len, "status:\t\tnot supported\n");
2610 len += sprintf(p + len, "status:\t\t%s\n",
2611 (status)? "enabled" : "disabled");
2612 len += sprintf(p + len, "commands:\tenable, disable\n");
2618 static int wan_write(char *buf)
2622 if (!tp_features.wan)
2625 while ((cmd = next_cmd(&buf))) {
2626 if (strlencmp(cmd, "enable") == 0) {
2628 } else if (strlencmp(cmd, "disable") == 0) {
2637 static struct ibm_struct wan_driver_data = {
2642 .flags.experimental = 1,
2645 /*************************************************************************
2649 enum video_access_mode {
2650 TPACPI_VIDEO_NONE = 0,
2651 TPACPI_VIDEO_570, /* 570 */
2652 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
2653 TPACPI_VIDEO_NEW, /* all others */
2656 enum { /* video status flags, based on VIDEO_570 */
2657 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
2658 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
2659 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
2662 enum { /* TPACPI_VIDEO_570 constants */
2663 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
2664 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
2665 * video_status_flags */
2666 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
2667 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
2670 static enum video_access_mode video_supported;
2671 static int video_orig_autosw;
2673 static int video_autosw_get(void);
2674 static int video_autosw_set(int enable);
2676 TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
2677 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
2678 "\\_SB.PCI0.VID0", /* 770e */
2679 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
2680 "\\_SB.PCI0.AGP.VID", /* all others */
2683 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
2685 static int __init video_init(struct ibm_init_struct *iibm)
2689 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
2691 TPACPI_ACPIHANDLE_INIT(vid);
2692 TPACPI_ACPIHANDLE_INIT(vid2);
2694 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
2695 /* G41, assume IVGA doesn't change */
2696 vid_handle = vid2_handle;
2699 /* video switching not supported on R30, R31 */
2700 video_supported = TPACPI_VIDEO_NONE;
2701 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
2703 video_supported = TPACPI_VIDEO_570;
2704 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
2705 /* 600e/x, 770e, 770x */
2706 video_supported = TPACPI_VIDEO_770;
2709 video_supported = TPACPI_VIDEO_NEW;
2711 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
2712 str_supported(video_supported != TPACPI_VIDEO_NONE),
2715 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
2718 static void video_exit(void)
2720 dbg_printk(TPACPI_DBG_EXIT,
2721 "restoring original video autoswitch mode\n");
2722 if (video_autosw_set(video_orig_autosw))
2723 printk(TPACPI_ERR "error while trying to restore original "
2724 "video autoswitch mode\n");
2727 static int video_outputsw_get(void)
2732 switch (video_supported) {
2733 case TPACPI_VIDEO_570:
2734 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
2735 TP_ACPI_VIDEO_570_PHSCMD))
2737 status = i & TP_ACPI_VIDEO_570_PHSMASK;
2739 case TPACPI_VIDEO_770:
2740 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
2743 status |= TP_ACPI_VIDEO_S_LCD;
2744 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
2747 status |= TP_ACPI_VIDEO_S_CRT;
2749 case TPACPI_VIDEO_NEW:
2750 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
2751 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
2754 status |= TP_ACPI_VIDEO_S_CRT;
2756 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
2757 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
2760 status |= TP_ACPI_VIDEO_S_LCD;
2761 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
2764 status |= TP_ACPI_VIDEO_S_DVI;
2773 static int video_outputsw_set(int status)
2778 switch (video_supported) {
2779 case TPACPI_VIDEO_570:
2780 res = acpi_evalf(NULL, NULL,
2781 "\\_SB.PHS2", "vdd",
2782 TP_ACPI_VIDEO_570_PHS2CMD,
2783 status | TP_ACPI_VIDEO_570_PHS2SET);
2785 case TPACPI_VIDEO_770:
2786 autosw = video_autosw_get();
2790 res = video_autosw_set(1);
2793 res = acpi_evalf(vid_handle, NULL,
2794 "ASWT", "vdd", status * 0x100, 0);
2795 if (!autosw && video_autosw_set(autosw)) {
2797 "video auto-switch left enabled due to error\n");
2801 case TPACPI_VIDEO_NEW:
2802 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
2803 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
2809 return (res)? 0 : -EIO;
2812 static int video_autosw_get(void)
2816 switch (video_supported) {
2817 case TPACPI_VIDEO_570:
2818 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
2821 case TPACPI_VIDEO_770:
2822 case TPACPI_VIDEO_NEW:
2823 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
2833 static int video_autosw_set(int enable)
2835 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
2840 static int video_outputsw_cycle(void)
2842 int autosw = video_autosw_get();
2848 switch (video_supported) {
2849 case TPACPI_VIDEO_570:
2850 res = video_autosw_set(1);
2853 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
2855 case TPACPI_VIDEO_770:
2856 case TPACPI_VIDEO_NEW:
2857 res = video_autosw_set(1);
2860 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
2865 if (!autosw && video_autosw_set(autosw)) {
2867 "video auto-switch left enabled due to error\n");
2871 return (res)? 0 : -EIO;
2874 static int video_expand_toggle(void)
2876 switch (video_supported) {
2877 case TPACPI_VIDEO_570:
2878 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
2880 case TPACPI_VIDEO_770:
2881 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
2883 case TPACPI_VIDEO_NEW:
2884 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
2892 static int video_read(char *p)
2897 if (video_supported == TPACPI_VIDEO_NONE) {
2898 len += sprintf(p + len, "status:\t\tnot supported\n");
2902 status = video_outputsw_get();
2906 autosw = video_autosw_get();
2910 len += sprintf(p + len, "status:\t\tsupported\n");
2911 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
2912 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
2913 if (video_supported == TPACPI_VIDEO_NEW)
2914 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
2915 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
2916 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
2917 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
2918 if (video_supported == TPACPI_VIDEO_NEW)
2919 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
2920 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
2921 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
2926 static int video_write(char *buf)
2929 int enable, disable, status;
2932 if (video_supported == TPACPI_VIDEO_NONE)
2938 while ((cmd = next_cmd(&buf))) {
2939 if (strlencmp(cmd, "lcd_enable") == 0) {
2940 enable |= TP_ACPI_VIDEO_S_LCD;
2941 } else if (strlencmp(cmd, "lcd_disable") == 0) {
2942 disable |= TP_ACPI_VIDEO_S_LCD;
2943 } else if (strlencmp(cmd, "crt_enable") == 0) {
2944 enable |= TP_ACPI_VIDEO_S_CRT;
2945 } else if (strlencmp(cmd, "crt_disable") == 0) {
2946 disable |= TP_ACPI_VIDEO_S_CRT;
2947 } else if (video_supported == TPACPI_VIDEO_NEW &&
2948 strlencmp(cmd, "dvi_enable") == 0) {
2949 enable |= TP_ACPI_VIDEO_S_DVI;
2950 } else if (video_supported == TPACPI_VIDEO_NEW &&
2951 strlencmp(cmd, "dvi_disable") == 0) {
2952 disable |= TP_ACPI_VIDEO_S_DVI;
2953 } else if (strlencmp(cmd, "auto_enable") == 0) {
2954 res = video_autosw_set(1);
2957 } else if (strlencmp(cmd, "auto_disable") == 0) {
2958 res = video_autosw_set(0);
2961 } else if (strlencmp(cmd, "video_switch") == 0) {
2962 res = video_outputsw_cycle();
2965 } else if (strlencmp(cmd, "expand_toggle") == 0) {
2966 res = video_expand_toggle();
2973 if (enable || disable) {
2974 status = video_outputsw_get();
2977 res = video_outputsw_set((status & ~disable) | enable);
2985 static struct ibm_struct video_driver_data = {
2988 .write = video_write,
2992 /*************************************************************************
2993 * Light (thinklight) subdriver
2996 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
2997 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
2999 static int __init light_init(struct ibm_init_struct *iibm)
3001 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
3003 TPACPI_ACPIHANDLE_INIT(ledb);
3004 TPACPI_ACPIHANDLE_INIT(lght);
3005 TPACPI_ACPIHANDLE_INIT(cmos);
3007 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
3008 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
3010 if (tp_features.light)
3011 /* light status not supported on
3012 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
3013 tp_features.light_status =
3014 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
3016 vdbg_printk(TPACPI_DBG_INIT, "light is %s\n",
3017 str_supported(tp_features.light));
3019 return (tp_features.light)? 0 : 1;
3022 static int light_read(char *p)
3027 if (!tp_features.light) {
3028 len += sprintf(p + len, "status:\t\tnot supported\n");
3029 } else if (!tp_features.light_status) {
3030 len += sprintf(p + len, "status:\t\tunknown\n");
3031 len += sprintf(p + len, "commands:\ton, off\n");
3033 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
3035 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
3036 len += sprintf(p + len, "commands:\ton, off\n");
3042 static int light_write(char *buf)
3044 int cmos_cmd, lght_cmd;
3048 if (!tp_features.light)
3051 while ((cmd = next_cmd(&buf))) {
3052 if (strlencmp(cmd, "on") == 0) {
3055 } else if (strlencmp(cmd, "off") == 0) {
3061 success = cmos_handle ?
3062 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
3063 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
3071 static struct ibm_struct light_driver_data = {
3074 .write = light_write,
3077 /*************************************************************************
3081 #ifdef CONFIG_THINKPAD_ACPI_DOCK
3083 static void dock_notify(struct ibm_struct *ibm, u32 event);
3084 static int dock_read(char *p);
3085 static int dock_write(char *buf);
3087 TPACPI_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
3088 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
3089 "\\_SB.PCI0.PCI1.DOCK", /* all others */
3090 "\\_SB.PCI.ISA.SLCE", /* 570 */
3091 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
3093 /* don't list other alternatives as we install a notify handler on the 570 */
3094 TPACPI_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
3096 static const struct acpi_device_id ibm_pci_device_ids[] = {
3097 {PCI_ROOT_HID_STRING, 0},
3101 static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
3103 .notify = dock_notify,
3104 .handle = &dock_handle,
3105 .type = ACPI_SYSTEM_NOTIFY,
3108 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
3109 * We just use it to get notifications of dock hotplug
3110 * in very old thinkpads */
3111 .hid = ibm_pci_device_ids,
3112 .notify = dock_notify,
3113 .handle = &pci_handle,
3114 .type = ACPI_SYSTEM_NOTIFY,
3118 static struct ibm_struct dock_driver_data[2] = {
3122 .write = dock_write,
3123 .acpi = &ibm_dock_acpidriver[0],
3127 .acpi = &ibm_dock_acpidriver[1],
3131 #define dock_docked() (_sta(dock_handle) & 1)
3133 static int __init dock_init(struct ibm_init_struct *iibm)
3135 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
3137 TPACPI_ACPIHANDLE_INIT(dock);
3139 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
3140 str_supported(dock_handle != NULL));
3142 return (dock_handle)? 0 : 1;
3145 static int __init dock_init2(struct ibm_init_struct *iibm)
3149 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
3151 if (dock_driver_data[0].flags.acpi_driver_registered &&
3152 dock_driver_data[0].flags.acpi_notify_installed) {
3153 TPACPI_ACPIHANDLE_INIT(pci);
3154 dock2_needed = (pci_handle != NULL);
3155 vdbg_printk(TPACPI_DBG_INIT,
3156 "dock PCI handler for the TP 570 is %s\n",
3157 str_supported(dock2_needed));
3159 vdbg_printk(TPACPI_DBG_INIT,
3160 "dock subdriver part 2 not required\n");
3164 return (dock2_needed)? 0 : 1;
3167 static void dock_notify(struct ibm_struct *ibm, u32 event)
3169 int docked = dock_docked();
3170 int pci = ibm->acpi->hid && ibm->acpi->device &&
3171 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
3174 if (event == 1 && !pci) /* 570 */
3175 data = 1; /* button */
3176 else if (event == 1 && pci) /* 570 */
3177 data = 3; /* dock */
3178 else if (event == 3 && docked)
3179 data = 1; /* button */
3180 else if (event == 3 && !docked)
3181 data = 2; /* undock */
3182 else if (event == 0 && docked)
3183 data = 3; /* dock */
3185 printk(TPACPI_ERR "unknown dock event %d, status %d\n",
3186 event, _sta(dock_handle));
3187 data = 0; /* unknown */
3189 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
3190 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
3191 ibm->acpi->device->dev.bus_id,
3195 static int dock_read(char *p)
3198 int docked = dock_docked();
3201 len += sprintf(p + len, "status:\t\tnot supported\n");
3203 len += sprintf(p + len, "status:\t\tundocked\n");
3205 len += sprintf(p + len, "status:\t\tdocked\n");
3206 len += sprintf(p + len, "commands:\tdock, undock\n");
3212 static int dock_write(char *buf)
3219 while ((cmd = next_cmd(&buf))) {
3220 if (strlencmp(cmd, "undock") == 0) {
3221 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
3222 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
3224 } else if (strlencmp(cmd, "dock") == 0) {
3225 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
3234 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
3236 /*************************************************************************
3240 #ifdef CONFIG_THINKPAD_ACPI_BAY
3242 TPACPI_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
3243 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
3244 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
3245 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
3246 ); /* A21e, R30, R31 */
3247 TPACPI_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
3248 "_EJ0", /* all others */
3249 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
3250 TPACPI_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
3251 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
3253 TPACPI_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
3257 static int __init bay_init(struct ibm_init_struct *iibm)
3259 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
3261 TPACPI_ACPIHANDLE_INIT(bay);
3263 TPACPI_ACPIHANDLE_INIT(bay_ej);
3264 TPACPI_ACPIHANDLE_INIT(bay2);
3266 TPACPI_ACPIHANDLE_INIT(bay2_ej);
3268 tp_features.bay_status = bay_handle &&
3269 acpi_evalf(bay_handle, NULL, "_STA", "qv");
3270 tp_features.bay_status2 = bay2_handle &&
3271 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
3273 tp_features.bay_eject = bay_handle && bay_ej_handle &&
3274 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
3275 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
3276 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
3278 vdbg_printk(TPACPI_DBG_INIT,
3279 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
3280 str_supported(tp_features.bay_status),
3281 str_supported(tp_features.bay_eject),
3282 str_supported(tp_features.bay_status2),
3283 str_supported(tp_features.bay_eject2));
3285 return (tp_features.bay_status || tp_features.bay_eject ||
3286 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
3289 static void bay_notify(struct ibm_struct *ibm, u32 event)
3291 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
3292 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
3293 ibm->acpi->device->dev.bus_id,
3297 #define bay_occupied(b) (_sta(b##_handle) & 1)
3299 static int bay_read(char *p)
3302 int occupied = bay_occupied(bay);
3303 int occupied2 = bay_occupied(bay2);
3306 len += sprintf(p + len, "status:\t\t%s\n",
3307 tp_features.bay_status ?
3308 (occupied ? "occupied" : "unoccupied") :
3310 if (tp_features.bay_status2)
3311 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
3312 "occupied" : "unoccupied");
3314 eject = tp_features.bay_eject && occupied;
3315 eject2 = tp_features.bay_eject2 && occupied2;
3317 if (eject && eject2)
3318 len += sprintf(p + len, "commands:\teject, eject2\n");
3320 len += sprintf(p + len, "commands:\teject\n");
3322 len += sprintf(p + len, "commands:\teject2\n");
3327 static int bay_write(char *buf)
3331 if (!tp_features.bay_eject && !tp_features.bay_eject2)
3334 while ((cmd = next_cmd(&buf))) {
3335 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
3336 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
3338 } else if (tp_features.bay_eject2 &&
3339 strlencmp(cmd, "eject2") == 0) {
3340 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
3349 static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
3350 .notify = bay_notify,
3351 .handle = &bay_handle,
3352 .type = ACPI_SYSTEM_NOTIFY,
3355 static struct ibm_struct bay_driver_data = {
3359 .acpi = &ibm_bay_acpidriver,
3362 #endif /* CONFIG_THINKPAD_ACPI_BAY */
3364 /*************************************************************************
3368 /* sysfs cmos_command -------------------------------------------------- */
3369 static ssize_t cmos_command_store(struct device *dev,
3370 struct device_attribute *attr,
3371 const char *buf, size_t count)
3373 unsigned long cmos_cmd;
3376 if (parse_strtoul(buf, 21, &cmos_cmd))
3379 res = issue_thinkpad_cmos_command(cmos_cmd);
3380 return (res)? res : count;
3383 static struct device_attribute dev_attr_cmos_command =
3384 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
3386 /* --------------------------------------------------------------------- */
3388 static int __init cmos_init(struct ibm_init_struct *iibm)
3392 vdbg_printk(TPACPI_DBG_INIT,
3393 "initializing cmos commands subdriver\n");
3395 TPACPI_ACPIHANDLE_INIT(cmos);
3397 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
3398 str_supported(cmos_handle != NULL));
3400 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
3404 return (cmos_handle)? 0 : 1;
3407 static void cmos_exit(void)
3409 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
3412 static int cmos_read(char *p)
3416 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3417 R30, R31, T20-22, X20-21 */
3419 len += sprintf(p + len, "status:\t\tnot supported\n");
3421 len += sprintf(p + len, "status:\t\tsupported\n");
3422 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
3428 static int cmos_write(char *buf)
3433 while ((cmd = next_cmd(&buf))) {
3434 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
3435 cmos_cmd >= 0 && cmos_cmd <= 21) {
3440 res = issue_thinkpad_cmos_command(cmos_cmd);
3448 static struct ibm_struct cmos_driver_data = {
3451 .write = cmos_write,
3455 /*************************************************************************
3459 enum led_access_mode {
3460 TPACPI_LED_NONE = 0,
3461 TPACPI_LED_570, /* 570 */
3462 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
3463 TPACPI_LED_NEW, /* all others */
3466 enum { /* For TPACPI_LED_OLD */
3467 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
3468 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
3469 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
3472 static enum led_access_mode led_supported;
3474 TPACPI_HANDLE(led, ec, "SLED", /* 570 */
3475 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
3476 /* T20-22, X20-21 */
3477 "LED", /* all others */
3480 static int __init led_init(struct ibm_init_struct *iibm)
3482 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
3484 TPACPI_ACPIHANDLE_INIT(led);
3487 /* led not supported on R30, R31 */
3488 led_supported = TPACPI_LED_NONE;
3489 else if (strlencmp(led_path, "SLED") == 0)
3491 led_supported = TPACPI_LED_570;
3492 else if (strlencmp(led_path, "SYSL") == 0)
3493 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
3494 led_supported = TPACPI_LED_OLD;
3497 led_supported = TPACPI_LED_NEW;
3499 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
3500 str_supported(led_supported), led_supported);
3502 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
3505 #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
3507 static int led_read(char *p)
3511 if (!led_supported) {
3512 len += sprintf(p + len, "status:\t\tnot supported\n");
3515 len += sprintf(p + len, "status:\t\tsupported\n");
3517 if (led_supported == TPACPI_LED_570) {
3520 for (i = 0; i < 8; i++) {
3521 if (!acpi_evalf(ec_handle,
3522 &status, "GLED", "dd", 1 << i))
3524 len += sprintf(p + len, "%d:\t\t%s\n",
3525 i, led_status(status));
3529 len += sprintf(p + len, "commands:\t"
3530 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
3535 /* off, on, blink */
3536 static const int led_sled_arg1[] = { 0, 1, 3 };
3537 static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
3538 static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
3539 static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
3541 static int led_write(char *buf)
3549 while ((cmd = next_cmd(&buf))) {
3550 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
3553 if (strstr(cmd, "off")) {
3555 } else if (strstr(cmd, "on")) {
3557 } else if (strstr(cmd, "blink")) {
3562 if (led_supported == TPACPI_LED_570) {
3565 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
3566 led, led_sled_arg1[ind]))
3568 } else if (led_supported == TPACPI_LED_OLD) {
3569 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
3571 ret = ec_write(TPACPI_LED_EC_HLMS, led);
3573 ret = ec_write(TPACPI_LED_EC_HLBL,
3574 led * led_exp_hlbl[ind]);
3576 ret = ec_write(TPACPI_LED_EC_HLCL,
3577 led * led_exp_hlcl[ind]);
3582 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
3583 led, led_led_arg1[ind]))
3591 static struct ibm_struct led_driver_data = {
3597 /*************************************************************************
3601 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
3603 static int __init beep_init(struct ibm_init_struct *iibm)
3605 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
3607 TPACPI_ACPIHANDLE_INIT(beep);
3609 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
3610 str_supported(beep_handle != NULL));
3612 return (beep_handle)? 0 : 1;
3615 static int beep_read(char *p)
3620 len += sprintf(p + len, "status:\t\tnot supported\n");
3622 len += sprintf(p + len, "status:\t\tsupported\n");
3623 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
3629 static int beep_write(char *buf)
3637 while ((cmd = next_cmd(&buf))) {
3638 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
3639 beep_cmd >= 0 && beep_cmd <= 17) {
3643 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
3650 static struct ibm_struct beep_driver_data = {
3653 .write = beep_write,
3656 /*************************************************************************
3660 enum thermal_access_mode {
3661 TPACPI_THERMAL_NONE = 0, /* No thermal support */
3662 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
3663 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
3664 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
3665 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
3668 enum { /* TPACPI_THERMAL_TPEC_* */
3669 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
3670 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
3671 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
3674 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
3675 struct ibm_thermal_sensors_struct {
3676 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
3679 static enum thermal_access_mode thermal_read_mode;
3681 /* idx is zero-based */
3682 static int thermal_get_sensor(int idx, s32 *value)
3688 t = TP_EC_THERMAL_TMP0;
3690 switch (thermal_read_mode) {
3691 #if TPACPI_MAX_THERMAL_SENSORS >= 16
3692 case TPACPI_THERMAL_TPEC_16:
3693 if (idx >= 8 && idx <= 15) {
3694 t = TP_EC_THERMAL_TMP8;
3699 case TPACPI_THERMAL_TPEC_8:
3701 if (!acpi_ec_read(t + idx, &tmp))
3703 *value = tmp * 1000;
3708 case TPACPI_THERMAL_ACPI_UPDT:
3710 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
3711 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
3713 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
3715 *value = (t - 2732) * 100;
3720 case TPACPI_THERMAL_ACPI_TMP07:
3722 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
3723 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
3725 if (t > 127 || t < -127)
3726 t = TP_EC_THERMAL_TMP_NA;
3732 case TPACPI_THERMAL_NONE:
3740 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
3751 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
3754 for (i = 0 ; i < n; i++) {
3755 res = thermal_get_sensor(i, &s->temp[i]);
3763 /* sysfs temp##_input -------------------------------------------------- */
3765 static ssize_t thermal_temp_input_show(struct device *dev,
3766 struct device_attribute *attr,
3769 struct sensor_device_attribute *sensor_attr =
3770 to_sensor_dev_attr(attr);
3771 int idx = sensor_attr->index;
3775 res = thermal_get_sensor(idx, &value);
3778 if (value == TP_EC_THERMAL_TMP_NA * 1000)
3781 return snprintf(buf, PAGE_SIZE, "%d\n", value);
3784 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
3785 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
3786 thermal_temp_input_show, NULL, _idxB)
3788 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
3789 THERMAL_SENSOR_ATTR_TEMP(1, 0),
3790 THERMAL_SENSOR_ATTR_TEMP(2, 1),
3791 THERMAL_SENSOR_ATTR_TEMP(3, 2),
3792 THERMAL_SENSOR_ATTR_TEMP(4, 3),
3793 THERMAL_SENSOR_ATTR_TEMP(5, 4),
3794 THERMAL_SENSOR_ATTR_TEMP(6, 5),
3795 THERMAL_SENSOR_ATTR_TEMP(7, 6),
3796 THERMAL_SENSOR_ATTR_TEMP(8, 7),
3797 THERMAL_SENSOR_ATTR_TEMP(9, 8),
3798 THERMAL_SENSOR_ATTR_TEMP(10, 9),
3799 THERMAL_SENSOR_ATTR_TEMP(11, 10),
3800 THERMAL_SENSOR_ATTR_TEMP(12, 11),
3801 THERMAL_SENSOR_ATTR_TEMP(13, 12),
3802 THERMAL_SENSOR_ATTR_TEMP(14, 13),
3803 THERMAL_SENSOR_ATTR_TEMP(15, 14),
3804 THERMAL_SENSOR_ATTR_TEMP(16, 15),
3807 #define THERMAL_ATTRS(X) \
3808 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
3810 static struct attribute *thermal_temp_input_attr[] = {
3830 static const struct attribute_group thermal_temp_input16_group = {
3831 .attrs = thermal_temp_input_attr
3834 static const struct attribute_group thermal_temp_input8_group = {
3835 .attrs = &thermal_temp_input_attr[8]
3838 #undef THERMAL_SENSOR_ATTR_TEMP
3839 #undef THERMAL_ATTRS
3841 /* --------------------------------------------------------------------- */
3843 static int __init thermal_init(struct ibm_init_struct *iibm)
3850 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
3852 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
3854 if (thinkpad_id.ec_model) {
3856 * Direct EC access mode: sensors at registers
3857 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
3858 * non-implemented, thermal sensors return 0x80 when
3863 for (i = 0; i < 8; i++) {
3864 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
3870 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
3878 /* This is sheer paranoia, but we handle it anyway */
3881 "ThinkPad ACPI EC access misbehaving, "
3882 "falling back to ACPI TMPx access "
3884 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
3887 "ThinkPad ACPI EC access misbehaving, "
3888 "disabling thermal sensors access\n");
3889 thermal_read_mode = TPACPI_THERMAL_NONE;
3894 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
3896 } else if (acpi_tmp7) {
3897 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
3898 /* 600e/x, 770e, 770x */
3899 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
3901 /* Standard ACPI TMPx access, max 8 sensors */
3902 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
3905 /* temperatures not supported on 570, G4x, R30, R31, R32 */
3906 thermal_read_mode = TPACPI_THERMAL_NONE;
3909 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
3910 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
3913 switch (thermal_read_mode) {
3914 case TPACPI_THERMAL_TPEC_16:
3915 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
3916 &thermal_temp_input16_group);
3920 case TPACPI_THERMAL_TPEC_8:
3921 case TPACPI_THERMAL_ACPI_TMP07:
3922 case TPACPI_THERMAL_ACPI_UPDT:
3923 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
3924 &thermal_temp_input8_group);
3928 case TPACPI_THERMAL_NONE:
3936 static void thermal_exit(void)
3938 switch (thermal_read_mode) {
3939 case TPACPI_THERMAL_TPEC_16:
3940 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
3941 &thermal_temp_input16_group);
3943 case TPACPI_THERMAL_TPEC_8:
3944 case TPACPI_THERMAL_ACPI_TMP07:
3945 case TPACPI_THERMAL_ACPI_UPDT:
3946 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
3947 &thermal_temp_input16_group);
3949 case TPACPI_THERMAL_NONE:
3955 static int thermal_read(char *p)
3959 struct ibm_thermal_sensors_struct t;
3961 n = thermal_get_sensors(&t);
3962 if (unlikely(n < 0))
3965 len += sprintf(p + len, "temperatures:\t");
3968 for (i = 0; i < (n - 1); i++)
3969 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
3970 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
3972 len += sprintf(p + len, "not supported\n");
3977 static struct ibm_struct thermal_driver_data = {
3979 .read = thermal_read,
3980 .exit = thermal_exit,
3983 /*************************************************************************
3987 static u8 ecdump_regs[256];
3989 static int ecdump_read(char *p)
3995 len += sprintf(p + len, "EC "
3996 " +00 +01 +02 +03 +04 +05 +06 +07"
3997 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
3998 for (i = 0; i < 256; i += 16) {
3999 len += sprintf(p + len, "EC 0x%02x:", i);
4000 for (j = 0; j < 16; j++) {
4001 if (!acpi_ec_read(i + j, &v))
4003 if (v != ecdump_regs[i + j])
4004 len += sprintf(p + len, " *%02x", v);
4006 len += sprintf(p + len, " %02x", v);
4007 ecdump_regs[i + j] = v;
4009 len += sprintf(p + len, "\n");
4014 /* These are way too dangerous to advertise openly... */
4016 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
4017 " (<offset> is 00-ff, <value> is 00-ff)\n");
4018 len += sprintf(p + len, "commands:\t0x<offset> <value> "
4019 " (<offset> is 00-ff, <value> is 0-255)\n");
4024 static int ecdump_write(char *buf)
4029 while ((cmd = next_cmd(&buf))) {
4030 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
4032 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
4036 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
4037 if (!acpi_ec_write(i, v))
4046 static struct ibm_struct ecdump_driver_data = {
4048 .read = ecdump_read,
4049 .write = ecdump_write,
4050 .flags.experimental = 1,
4053 /*************************************************************************
4054 * Backlight/brightness subdriver
4057 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
4059 static struct backlight_device *ibm_backlight_device;
4060 static int brightness_offset = 0x31;
4061 static int brightness_mode;
4062 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
4064 static struct mutex brightness_mutex;
4067 * ThinkPads can read brightness from two places: EC 0x31, or
4068 * CMOS NVRAM byte 0x5E, bits 0-3.
4070 static int brightness_get(struct backlight_device *bd)
4072 u8 lec = 0, lcmos = 0, level = 0;
4074 if (brightness_mode & 1) {
4075 if (!acpi_ec_read(brightness_offset, &lec))
4077 lec &= (tp_features.bright_16levels)? 0x0f : 0x07;
4080 if (brightness_mode & 2) {
4081 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
4082 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
4083 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
4084 lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07;
4088 if (brightness_mode == 3 && lec != lcmos) {
4090 "CMOS NVRAM (%u) and EC (%u) do not agree "
4091 "on display brightness level\n",
4092 (unsigned int) lcmos,
4093 (unsigned int) lec);
4100 /* May return EINTR which can always be mapped to ERESTARTSYS */
4101 static int brightness_set(int value)
4103 int cmos_cmd, inc, i, res;
4106 if (value > ((tp_features.bright_16levels)? 15 : 7))
4109 res = mutex_lock_interruptible(&brightness_mutex);
4113 current_value = brightness_get(NULL);
4114 if (current_value < 0) {
4115 res = current_value;
4119 cmos_cmd = value > current_value ?
4120 TP_CMOS_BRIGHTNESS_UP :
4121 TP_CMOS_BRIGHTNESS_DOWN;
4122 inc = (value > current_value)? 1 : -1;
4125 for (i = current_value; i != value; i += inc) {
4126 if ((brightness_mode & 2) &&
4127 issue_thinkpad_cmos_command(cmos_cmd)) {
4131 if ((brightness_mode & 1) &&
4132 !acpi_ec_write(brightness_offset, i + inc)) {
4139 mutex_unlock(&brightness_mutex);
4143 /* sysfs backlight class ----------------------------------------------- */
4145 static int brightness_update_status(struct backlight_device *bd)
4147 /* it is the backlight class's job (caller) to handle
4148 * EINTR and other errors properly */
4149 return brightness_set(
4150 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
4151 bd->props.power == FB_BLANK_UNBLANK) ?
4152 bd->props.brightness : 0);
4155 static struct backlight_ops ibm_backlight_data = {
4156 .get_brightness = brightness_get,
4157 .update_status = brightness_update_status,
4160 /* --------------------------------------------------------------------- */
4162 static int __init tpacpi_query_bcll_levels(acpi_handle handle)
4164 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
4165 union acpi_object *obj;
4168 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
4169 obj = (union acpi_object *)buffer.pointer;
4170 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
4171 printk(TPACPI_ERR "Unknown BCLL data, "
4172 "please report this to %s\n", TPACPI_MAIL);
4175 rc = obj->package.count;
4181 kfree(buffer.pointer);
4185 static acpi_status __init brightness_find_bcll(acpi_handle handle, u32 lvl,
4186 void *context, void **rv)
4188 char name[ACPI_PATH_SEGMENT_LENGTH];
4189 struct acpi_buffer buffer = { sizeof(name), &name };
4191 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
4192 !strncmp("BCLL", name, sizeof(name) - 1)) {
4193 if (tpacpi_query_bcll_levels(handle) == 16) {
4195 return AE_CTRL_TERMINATE;
4204 static int __init brightness_check_levels(void)
4207 void *found_node = NULL;
4210 TPACPI_ACPIHANDLE_INIT(vid);
4215 /* Search for a BCLL package with 16 levels */
4216 status = acpi_walk_namespace(ACPI_TYPE_PACKAGE, vid_handle, 3,
4217 brightness_find_bcll, NULL,
4220 return (ACPI_SUCCESS(status) && found_node != NULL);
4223 static acpi_status __init brightness_find_bcl(acpi_handle handle, u32 lvl,
4224 void *context, void **rv)
4226 char name[ACPI_PATH_SEGMENT_LENGTH];
4227 struct acpi_buffer buffer = { sizeof(name), &name };
4229 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
4230 !strncmp("_BCL", name, sizeof(name) - 1)) {
4232 return AE_CTRL_TERMINATE;
4238 static int __init brightness_check_std_acpi_support(void)
4241 void *found_node = NULL;
4244 TPACPI_ACPIHANDLE_INIT(vid);
4249 /* Search for a _BCL method, but don't execute it */
4250 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
4251 brightness_find_bcl, NULL, &found_node);
4253 return (ACPI_SUCCESS(status) && found_node != NULL);
4256 static int __init brightness_init(struct ibm_init_struct *iibm)
4260 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
4262 mutex_init(&brightness_mutex);
4264 if (!brightness_enable) {
4265 dbg_printk(TPACPI_DBG_INIT,
4266 "brightness support disabled by "
4267 "module parameter\n");
4269 } else if (brightness_enable > 1) {
4270 if (brightness_check_std_acpi_support()) {
4271 printk(TPACPI_NOTICE
4272 "standard ACPI backlight interface "
4273 "available, not loading native one...\n");
4278 if (!brightness_mode) {
4279 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
4280 brightness_mode = 2;
4282 brightness_mode = 3;
4284 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
4288 if (brightness_mode > 3)
4291 tp_features.bright_16levels =
4292 thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO &&
4293 brightness_check_levels();
4295 b = brightness_get(NULL);
4299 if (tp_features.bright_16levels)
4301 "detected a 16-level brightness capable ThinkPad\n");
4303 ibm_backlight_device = backlight_device_register(
4304 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
4305 &ibm_backlight_data);
4306 if (IS_ERR(ibm_backlight_device)) {
4307 printk(TPACPI_ERR "Could not register backlight device\n");
4308 return PTR_ERR(ibm_backlight_device);
4310 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
4312 ibm_backlight_device->props.max_brightness =
4313 (tp_features.bright_16levels)? 15 : 7;
4314 ibm_backlight_device->props.brightness = b;
4315 backlight_update_status(ibm_backlight_device);
4320 static void brightness_exit(void)
4322 if (ibm_backlight_device) {
4323 vdbg_printk(TPACPI_DBG_EXIT,
4324 "calling backlight_device_unregister()\n");
4325 backlight_device_unregister(ibm_backlight_device);
4326 ibm_backlight_device = NULL;
4330 static int brightness_read(char *p)
4335 level = brightness_get(NULL);
4337 len += sprintf(p + len, "level:\t\tunreadable\n");
4339 len += sprintf(p + len, "level:\t\t%d\n", level);
4340 len += sprintf(p + len, "commands:\tup, down\n");
4341 len += sprintf(p + len, "commands:\tlevel <level>"
4342 " (<level> is 0-%d)\n",
4343 (tp_features.bright_16levels) ? 15 : 7);
4349 static int brightness_write(char *buf)
4354 int max_level = (tp_features.bright_16levels) ? 15 : 7;
4356 level = brightness_get(NULL);
4360 while ((cmd = next_cmd(&buf))) {
4361 if (strlencmp(cmd, "up") == 0) {
4362 if (level < max_level)
4364 } else if (strlencmp(cmd, "down") == 0) {
4367 } else if (sscanf(cmd, "level %d", &level) == 1 &&
4368 level >= 0 && level <= max_level) {
4375 * Now we know what the final level should be, so we try to set it.
4376 * Doing it this way makes the syscall restartable in case of EINTR
4378 rc = brightness_set(level);
4379 return (rc == -EINTR)? ERESTARTSYS : rc;
4382 static struct ibm_struct brightness_driver_data = {
4383 .name = "brightness",
4384 .read = brightness_read,
4385 .write = brightness_write,
4386 .exit = brightness_exit,
4389 /*************************************************************************
4393 static int volume_offset = 0x30;
4395 static int volume_read(char *p)
4400 if (!acpi_ec_read(volume_offset, &level)) {
4401 len += sprintf(p + len, "level:\t\tunreadable\n");
4403 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
4404 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
4405 len += sprintf(p + len, "commands:\tup, down, mute\n");
4406 len += sprintf(p + len, "commands:\tlevel <level>"
4407 " (<level> is 0-15)\n");
4413 static int volume_write(char *buf)
4415 int cmos_cmd, inc, i;
4417 int new_level, new_mute;
4420 while ((cmd = next_cmd(&buf))) {
4421 if (!acpi_ec_read(volume_offset, &level))
4423 new_mute = mute = level & 0x40;
4424 new_level = level = level & 0xf;
4426 if (strlencmp(cmd, "up") == 0) {
4430 new_level = level == 15 ? 15 : level + 1;
4431 } else if (strlencmp(cmd, "down") == 0) {
4435 new_level = level == 0 ? 0 : level - 1;
4436 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
4437 new_level >= 0 && new_level <= 15) {
4439 } else if (strlencmp(cmd, "mute") == 0) {
4444 if (new_level != level) {
4445 /* mute doesn't change */
4447 cmos_cmd = (new_level > level) ?
4448 TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
4449 inc = new_level > level ? 1 : -1;
4451 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
4452 !acpi_ec_write(volume_offset, level)))
4455 for (i = level; i != new_level; i += inc)
4456 if (issue_thinkpad_cmos_command(cmos_cmd) ||
4457 !acpi_ec_write(volume_offset, i + inc))
4461 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
4462 !acpi_ec_write(volume_offset, new_level + mute))) {
4467 if (new_mute != mute) {
4468 /* level doesn't change */
4470 cmos_cmd = (new_mute) ?
4471 TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
4473 if (issue_thinkpad_cmos_command(cmos_cmd) ||
4474 !acpi_ec_write(volume_offset, level + new_mute))
4482 static struct ibm_struct volume_driver_data = {
4484 .read = volume_read,
4485 .write = volume_write,
4488 /*************************************************************************
4495 * TPACPI_FAN_RD_ACPI_GFAN:
4496 * ACPI GFAN method: returns fan level
4498 * see TPACPI_FAN_WR_ACPI_SFAN
4499 * EC 0x2f (HFSP) not available if GFAN exists
4501 * TPACPI_FAN_WR_ACPI_SFAN:
4502 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
4504 * EC 0x2f (HFSP) might be available *for reading*, but do not use
4507 * TPACPI_FAN_WR_TPEC:
4508 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
4509 * Supported on almost all ThinkPads
4511 * Fan speed changes of any sort (including those caused by the
4512 * disengaged mode) are usually done slowly by the firmware as the
4513 * maximum ammount of fan duty cycle change per second seems to be
4516 * Reading is not available if GFAN exists.
4517 * Writing is not available if SFAN exists.
4520 * 7 automatic mode engaged;
4521 * (default operation mode of the ThinkPad)
4522 * fan level is ignored in this mode.
4523 * 6 full speed mode (takes precedence over bit 7);
4524 * not available on all thinkpads. May disable
4525 * the tachometer while the fan controller ramps up
4526 * the speed (which can take up to a few *minutes*).
4527 * Speeds up fan to 100% duty-cycle, which is far above
4528 * the standard RPM levels. It is not impossible that
4529 * it could cause hardware damage.
4530 * 5-3 unused in some models. Extra bits for fan level
4531 * in others, but still useless as all values above
4532 * 7 map to the same speed as level 7 in these models.
4533 * 2-0 fan level (0..7 usually)
4535 * 0x07 = max (set when temperatures critical)
4536 * Some ThinkPads may have other levels, see
4537 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
4539 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
4540 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
4541 * does so, its initial value is meaningless (0x07).
4543 * For firmware bugs, refer to:
4544 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
4548 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
4549 * Main fan tachometer reading (in RPM)
4551 * This register is present on all ThinkPads with a new-style EC, and
4552 * it is known not to be present on the A21m/e, and T22, as there is
4553 * something else in offset 0x84 according to the ACPI DSDT. Other
4554 * ThinkPads from this same time period (and earlier) probably lack the
4555 * tachometer as well.
4557 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
4558 * was never fixed by IBM to report the EC firmware version string
4559 * probably support the tachometer (like the early X models), so
4560 * detecting it is quite hard. We need more data to know for sure.
4562 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
4565 * FIRMWARE BUG: may go stale while the EC is switching to full speed
4568 * For firmware bugs, refer to:
4569 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
4571 * TPACPI_FAN_WR_ACPI_FANS:
4572 * ThinkPad X31, X40, X41. Not available in the X60.
4574 * FANS ACPI handle: takes three arguments: low speed, medium speed,
4575 * high speed. ACPI DSDT seems to map these three speeds to levels
4576 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
4577 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
4579 * The speeds are stored on handles
4580 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
4582 * There are three default speed sets, acessible as handles:
4583 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
4585 * ACPI DSDT switches which set is in use depending on various
4588 * TPACPI_FAN_WR_TPEC is also available and should be used to
4589 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
4590 * but the ACPI tables just mention level 7.
4593 enum { /* Fan control constants */
4594 fan_status_offset = 0x2f, /* EC register 0x2f */
4595 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
4596 * 0x84 must be read before 0x85 */
4598 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
4599 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
4601 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
4604 enum fan_status_access_mode {
4605 TPACPI_FAN_NONE = 0, /* No fan status or control */
4606 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
4607 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
4610 enum fan_control_access_mode {
4611 TPACPI_FAN_WR_NONE = 0, /* No fan control */
4612 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
4613 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
4614 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
4617 enum fan_control_commands {
4618 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
4619 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
4620 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
4621 * and also watchdog cmd */
4624 static int fan_control_allowed;
4626 static enum fan_status_access_mode fan_status_access_mode;
4627 static enum fan_control_access_mode fan_control_access_mode;
4628 static enum fan_control_commands fan_control_commands;
4630 static u8 fan_control_initial_status;
4631 static u8 fan_control_desired_level;
4632 static int fan_watchdog_maxinterval;
4634 static struct mutex fan_mutex;
4636 static void fan_watchdog_fire(struct work_struct *ignored);
4637 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
4639 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
4640 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
4641 "\\FSPD", /* 600e/x, 770e, 770x */
4643 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
4644 "JFNS", /* 770x-JL */
4648 * Call with fan_mutex held
4650 static void fan_update_desired_level(u8 status)
4653 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
4655 fan_control_desired_level = 7;
4657 fan_control_desired_level = status;
4661 static int fan_get_status(u8 *status)
4666 * Add TPACPI_FAN_RD_ACPI_FANS ? */
4668 switch (fan_status_access_mode) {
4669 case TPACPI_FAN_RD_ACPI_GFAN:
4670 /* 570, 600e/x, 770e, 770x */
4672 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
4680 case TPACPI_FAN_RD_TPEC:
4681 /* all except 570, 600e/x, 770e, 770x */
4682 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
4697 static int fan_get_status_safe(u8 *status)
4702 if (mutex_lock_interruptible(&fan_mutex))
4703 return -ERESTARTSYS;
4704 rc = fan_get_status(&s);
4706 fan_update_desired_level(s);
4707 mutex_unlock(&fan_mutex);
4715 static int fan_get_speed(unsigned int *speed)
4719 switch (fan_status_access_mode) {
4720 case TPACPI_FAN_RD_TPEC:
4721 /* all except 570, 600e/x, 770e, 770x */
4722 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
4723 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
4727 *speed = (hi << 8) | lo;
4738 static int fan_set_level(int level)
4740 if (!fan_control_allowed)
4743 switch (fan_control_access_mode) {
4744 case TPACPI_FAN_WR_ACPI_SFAN:
4745 if (level >= 0 && level <= 7) {
4746 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
4752 case TPACPI_FAN_WR_ACPI_FANS:
4753 case TPACPI_FAN_WR_TPEC:
4754 if ((level != TP_EC_FAN_AUTO) &&
4755 (level != TP_EC_FAN_FULLSPEED) &&
4756 ((level < 0) || (level > 7)))
4759 /* safety net should the EC not support AUTO
4760 * or FULLSPEED mode bits and just ignore them */
4761 if (level & TP_EC_FAN_FULLSPEED)
4762 level |= 7; /* safety min speed 7 */
4763 else if (level & TP_EC_FAN_FULLSPEED)
4764 level |= 4; /* safety min speed 4 */
4766 if (!acpi_ec_write(fan_status_offset, level))
4769 tp_features.fan_ctrl_status_undef = 0;
4778 static int fan_set_level_safe(int level)
4782 if (!fan_control_allowed)
4785 if (mutex_lock_interruptible(&fan_mutex))
4786 return -ERESTARTSYS;
4788 if (level == TPACPI_FAN_LAST_LEVEL)
4789 level = fan_control_desired_level;
4791 rc = fan_set_level(level);
4793 fan_update_desired_level(level);
4795 mutex_unlock(&fan_mutex);
4799 static int fan_set_enable(void)
4804 if (!fan_control_allowed)
4807 if (mutex_lock_interruptible(&fan_mutex))
4808 return -ERESTARTSYS;
4810 switch (fan_control_access_mode) {
4811 case TPACPI_FAN_WR_ACPI_FANS:
4812 case TPACPI_FAN_WR_TPEC:
4813 rc = fan_get_status(&s);
4817 /* Don't go out of emergency fan mode */
4820 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
4823 if (!acpi_ec_write(fan_status_offset, s))
4826 tp_features.fan_ctrl_status_undef = 0;
4831 case TPACPI_FAN_WR_ACPI_SFAN:
4832 rc = fan_get_status(&s);
4838 /* Set fan to at least level 4 */
4841 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
4851 mutex_unlock(&fan_mutex);
4855 static int fan_set_disable(void)
4859 if (!fan_control_allowed)
4862 if (mutex_lock_interruptible(&fan_mutex))
4863 return -ERESTARTSYS;
4866 switch (fan_control_access_mode) {
4867 case TPACPI_FAN_WR_ACPI_FANS:
4868 case TPACPI_FAN_WR_TPEC:
4869 if (!acpi_ec_write(fan_status_offset, 0x00))
4872 fan_control_desired_level = 0;
4873 tp_features.fan_ctrl_status_undef = 0;
4877 case TPACPI_FAN_WR_ACPI_SFAN:
4878 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
4881 fan_control_desired_level = 0;
4889 mutex_unlock(&fan_mutex);
4893 static int fan_set_speed(int speed)
4897 if (!fan_control_allowed)
4900 if (mutex_lock_interruptible(&fan_mutex))
4901 return -ERESTARTSYS;
4904 switch (fan_control_access_mode) {
4905 case TPACPI_FAN_WR_ACPI_FANS:
4906 if (speed >= 0 && speed <= 65535) {
4907 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
4908 speed, speed, speed))
4918 mutex_unlock(&fan_mutex);
4922 static void fan_watchdog_reset(void)
4924 static int fan_watchdog_active;
4926 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
4929 if (fan_watchdog_active)
4930 cancel_delayed_work(&fan_watchdog_task);
4932 if (fan_watchdog_maxinterval > 0 &&
4933 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
4934 fan_watchdog_active = 1;
4935 if (!schedule_delayed_work(&fan_watchdog_task,
4936 msecs_to_jiffies(fan_watchdog_maxinterval
4939 "failed to schedule the fan watchdog, "
4940 "watchdog will not trigger\n");
4943 fan_watchdog_active = 0;
4946 static void fan_watchdog_fire(struct work_struct *ignored)
4950 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
4953 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
4954 rc = fan_set_enable();
4956 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
4957 "will try again later...\n", -rc);
4958 /* reschedule for later */
4959 fan_watchdog_reset();
4964 * SYSFS fan layout: hwmon compatible (device)
4967 * 0: "disengaged" mode
4969 * 2: native EC "auto" mode (recommended, hardware default)
4971 * pwm*: set speed in manual mode, ignored otherwise.
4972 * 0 is level 0; 255 is level 7. Intermediate points done with linear
4975 * fan*_input: tachometer reading, RPM
4978 * SYSFS fan layout: extensions
4980 * fan_watchdog (driver):
4981 * fan watchdog interval in seconds, 0 disables (default), max 120
4984 /* sysfs fan pwm1_enable ----------------------------------------------- */
4985 static ssize_t fan_pwm1_enable_show(struct device *dev,
4986 struct device_attribute *attr,
4992 res = fan_get_status_safe(&status);
4996 if (unlikely(tp_features.fan_ctrl_status_undef)) {
4997 if (status != fan_control_initial_status) {
4998 tp_features.fan_ctrl_status_undef = 0;
5000 /* Return most likely status. In fact, it
5001 * might be the only possible status */
5002 status = TP_EC_FAN_AUTO;
5006 if (status & TP_EC_FAN_FULLSPEED) {
5008 } else if (status & TP_EC_FAN_AUTO) {
5013 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
5016 static ssize_t fan_pwm1_enable_store(struct device *dev,
5017 struct device_attribute *attr,
5018 const char *buf, size_t count)
5023 if (parse_strtoul(buf, 2, &t))
5028 level = TP_EC_FAN_FULLSPEED;
5031 level = TPACPI_FAN_LAST_LEVEL;
5034 level = TP_EC_FAN_AUTO;
5037 /* reserved for software-controlled auto mode */
5043 res = fan_set_level_safe(level);
5049 fan_watchdog_reset();
5054 static struct device_attribute dev_attr_fan_pwm1_enable =
5055 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
5056 fan_pwm1_enable_show, fan_pwm1_enable_store);
5058 /* sysfs fan pwm1 ------------------------------------------------------ */
5059 static ssize_t fan_pwm1_show(struct device *dev,
5060 struct device_attribute *attr,
5066 res = fan_get_status_safe(&status);
5070 if (unlikely(tp_features.fan_ctrl_status_undef)) {
5071 if (status != fan_control_initial_status) {
5072 tp_features.fan_ctrl_status_undef = 0;
5074 status = TP_EC_FAN_AUTO;
5079 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
5080 status = fan_control_desired_level;
5085 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
5088 static ssize_t fan_pwm1_store(struct device *dev,
5089 struct device_attribute *attr,
5090 const char *buf, size_t count)
5094 u8 status, newlevel;
5096 if (parse_strtoul(buf, 255, &s))
5099 /* scale down from 0-255 to 0-7 */
5100 newlevel = (s >> 5) & 0x07;
5102 if (mutex_lock_interruptible(&fan_mutex))
5103 return -ERESTARTSYS;
5105 rc = fan_get_status(&status);
5106 if (!rc && (status &
5107 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
5108 rc = fan_set_level(newlevel);
5112 fan_update_desired_level(newlevel);
5113 fan_watchdog_reset();
5117 mutex_unlock(&fan_mutex);
5118 return (rc)? rc : count;
5121 static struct device_attribute dev_attr_fan_pwm1 =
5122 __ATTR(pwm1, S_IWUSR | S_IRUGO,
5123 fan_pwm1_show, fan_pwm1_store);
5125 /* sysfs fan fan1_input ------------------------------------------------ */
5126 static ssize_t fan_fan1_input_show(struct device *dev,
5127 struct device_attribute *attr,
5133 res = fan_get_speed(&speed);
5137 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
5140 static struct device_attribute dev_attr_fan_fan1_input =
5141 __ATTR(fan1_input, S_IRUGO,
5142 fan_fan1_input_show, NULL);
5144 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
5145 static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
5148 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
5151 static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
5152 const char *buf, size_t count)
5156 if (parse_strtoul(buf, 120, &t))
5159 if (!fan_control_allowed)
5162 fan_watchdog_maxinterval = t;
5163 fan_watchdog_reset();
5168 static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
5169 fan_fan_watchdog_show, fan_fan_watchdog_store);
5171 /* --------------------------------------------------------------------- */
5172 static struct attribute *fan_attributes[] = {
5173 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
5174 &dev_attr_fan_fan1_input.attr,
5178 static const struct attribute_group fan_attr_group = {
5179 .attrs = fan_attributes,
5182 static int __init fan_init(struct ibm_init_struct *iibm)
5186 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
5188 mutex_init(&fan_mutex);
5189 fan_status_access_mode = TPACPI_FAN_NONE;
5190 fan_control_access_mode = TPACPI_FAN_WR_NONE;
5191 fan_control_commands = 0;
5192 fan_watchdog_maxinterval = 0;
5193 tp_features.fan_ctrl_status_undef = 0;
5194 fan_control_desired_level = 7;
5196 TPACPI_ACPIHANDLE_INIT(fans);
5197 TPACPI_ACPIHANDLE_INIT(gfan);
5198 TPACPI_ACPIHANDLE_INIT(sfan);
5201 /* 570, 600e/x, 770e, 770x */
5202 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
5204 /* all other ThinkPads: note that even old-style
5205 * ThinkPad ECs supports the fan control register */
5206 if (likely(acpi_ec_read(fan_status_offset,
5207 &fan_control_initial_status))) {
5208 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
5210 /* In some ThinkPads, neither the EC nor the ACPI
5211 * DSDT initialize the fan status, and it ends up
5212 * being set to 0x07 when it *could* be either
5215 * Enable for TP-1Y (T43), TP-78 (R51e),
5216 * TP-76 (R52), TP-70 (T43, R52), which are known
5218 if (fan_control_initial_status == 0x07) {
5219 switch (thinkpad_id.ec_model) {
5220 case 0x5931: /* TP-1Y */
5221 case 0x3837: /* TP-78 */
5222 case 0x3637: /* TP-76 */
5223 case 0x3037: /* TP-70 */
5224 printk(TPACPI_NOTICE
5225 "fan_init: initial fan status "
5226 "is unknown, assuming it is "
5228 tp_features.fan_ctrl_status_undef = 1;
5234 "ThinkPad ACPI EC access misbehaving, "
5235 "fan status and control unavailable\n");
5242 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
5243 fan_control_commands |=
5244 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
5247 /* gfan without sfan means no fan control */
5248 /* all other models implement TP EC 0x2f control */
5252 fan_control_access_mode =
5253 TPACPI_FAN_WR_ACPI_FANS;
5254 fan_control_commands |=
5255 TPACPI_FAN_CMD_SPEED |
5256 TPACPI_FAN_CMD_LEVEL |
5257 TPACPI_FAN_CMD_ENABLE;
5259 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
5260 fan_control_commands |=
5261 TPACPI_FAN_CMD_LEVEL |
5262 TPACPI_FAN_CMD_ENABLE;
5267 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
5268 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
5269 fan_control_access_mode != TPACPI_FAN_WR_NONE),
5270 fan_status_access_mode, fan_control_access_mode);
5272 /* fan control master switch */
5273 if (!fan_control_allowed) {
5274 fan_control_access_mode = TPACPI_FAN_WR_NONE;
5275 fan_control_commands = 0;
5276 dbg_printk(TPACPI_DBG_INIT,
5277 "fan control features disabled by parameter\n");
5280 /* update fan_control_desired_level */
5281 if (fan_status_access_mode != TPACPI_FAN_NONE)
5282 fan_get_status_safe(NULL);
5284 if (fan_status_access_mode != TPACPI_FAN_NONE ||
5285 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
5286 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
5289 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
5290 &driver_attr_fan_watchdog);
5298 static void fan_exit(void)
5300 vdbg_printk(TPACPI_DBG_EXIT,
5301 "cancelling any pending fan watchdog tasks\n");
5303 /* FIXME: can we really do this unconditionally? */
5304 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
5305 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
5306 &driver_attr_fan_watchdog);
5308 cancel_delayed_work(&fan_watchdog_task);
5309 flush_scheduled_work();
5312 static int fan_read(char *p)
5317 unsigned int speed = 0;
5319 switch (fan_status_access_mode) {
5320 case TPACPI_FAN_RD_ACPI_GFAN:
5321 /* 570, 600e/x, 770e, 770x */
5322 rc = fan_get_status_safe(&status);
5326 len += sprintf(p + len, "status:\t\t%s\n"
5328 (status != 0) ? "enabled" : "disabled", status);
5331 case TPACPI_FAN_RD_TPEC:
5332 /* all except 570, 600e/x, 770e, 770x */
5333 rc = fan_get_status_safe(&status);
5337 if (unlikely(tp_features.fan_ctrl_status_undef)) {
5338 if (status != fan_control_initial_status)
5339 tp_features.fan_ctrl_status_undef = 0;
5341 /* Return most likely status. In fact, it
5342 * might be the only possible status */
5343 status = TP_EC_FAN_AUTO;
5346 len += sprintf(p + len, "status:\t\t%s\n",
5347 (status != 0) ? "enabled" : "disabled");
5349 rc = fan_get_speed(&speed);
5353 len += sprintf(p + len, "speed:\t\t%d\n", speed);
5355 if (status & TP_EC_FAN_FULLSPEED)
5356 /* Disengaged mode takes precedence */
5357 len += sprintf(p + len, "level:\t\tdisengaged\n");
5358 else if (status & TP_EC_FAN_AUTO)
5359 len += sprintf(p + len, "level:\t\tauto\n");
5361 len += sprintf(p + len, "level:\t\t%d\n", status);
5364 case TPACPI_FAN_NONE:
5366 len += sprintf(p + len, "status:\t\tnot supported\n");
5369 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
5370 len += sprintf(p + len, "commands:\tlevel <level>");
5372 switch (fan_control_access_mode) {
5373 case TPACPI_FAN_WR_ACPI_SFAN:
5374 len += sprintf(p + len, " (<level> is 0-7)\n");
5378 len += sprintf(p + len, " (<level> is 0-7, "
5379 "auto, disengaged, full-speed)\n");
5384 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
5385 len += sprintf(p + len, "commands:\tenable, disable\n"
5386 "commands:\twatchdog <timeout> (<timeout> "
5387 "is 0 (off), 1-120 (seconds))\n");
5389 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
5390 len += sprintf(p + len, "commands:\tspeed <speed>"
5391 " (<speed> is 0-65535)\n");
5396 static int fan_write_cmd_level(const char *cmd, int *rc)
5400 if (strlencmp(cmd, "level auto") == 0)
5401 level = TP_EC_FAN_AUTO;
5402 else if ((strlencmp(cmd, "level disengaged") == 0) |
5403 (strlencmp(cmd, "level full-speed") == 0))
5404 level = TP_EC_FAN_FULLSPEED;
5405 else if (sscanf(cmd, "level %d", &level) != 1)
5408 *rc = fan_set_level_safe(level);
5410 printk(TPACPI_ERR "level command accepted for unsupported "
5411 "access mode %d", fan_control_access_mode);
5416 static int fan_write_cmd_enable(const char *cmd, int *rc)
5418 if (strlencmp(cmd, "enable") != 0)
5421 *rc = fan_set_enable();
5423 printk(TPACPI_ERR "enable command accepted for unsupported "
5424 "access mode %d", fan_control_access_mode);
5429 static int fan_write_cmd_disable(const char *cmd, int *rc)
5431 if (strlencmp(cmd, "disable") != 0)
5434 *rc = fan_set_disable();
5436 printk(TPACPI_ERR "disable command accepted for unsupported "
5437 "access mode %d", fan_control_access_mode);
5442 static int fan_write_cmd_speed(const char *cmd, int *rc)
5447 * Support speed <low> <medium> <high> ? */
5449 if (sscanf(cmd, "speed %d", &speed) != 1)
5452 *rc = fan_set_speed(speed);
5454 printk(TPACPI_ERR "speed command accepted for unsupported "
5455 "access mode %d", fan_control_access_mode);
5460 static int fan_write_cmd_watchdog(const char *cmd, int *rc)
5464 if (sscanf(cmd, "watchdog %d", &interval) != 1)
5467 if (interval < 0 || interval > 120)
5470 fan_watchdog_maxinterval = interval;
5475 static int fan_write(char *buf)
5480 while (!rc && (cmd = next_cmd(&buf))) {
5481 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
5482 fan_write_cmd_level(cmd, &rc)) &&
5483 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
5484 (fan_write_cmd_enable(cmd, &rc) ||
5485 fan_write_cmd_disable(cmd, &rc) ||
5486 fan_write_cmd_watchdog(cmd, &rc))) &&
5487 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
5488 fan_write_cmd_speed(cmd, &rc))
5492 fan_watchdog_reset();
5498 static struct ibm_struct fan_driver_data = {
5505 /****************************************************************************
5506 ****************************************************************************
5510 ****************************************************************************
5511 ****************************************************************************/
5513 /* sysfs name ---------------------------------------------------------- */
5514 static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
5515 struct device_attribute *attr,
5518 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
5521 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
5522 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
5524 /* --------------------------------------------------------------------- */
5527 static struct proc_dir_entry *proc_dir;
5530 * Module and infrastructure proble, init and exit handling
5533 static int force_load;
5535 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
5536 static const char * __init str_supported(int is_supported)
5538 static char text_unsupported[] __initdata = "not supported";
5540 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
5542 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
5544 static void ibm_exit(struct ibm_struct *ibm)
5546 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
5548 list_del_init(&ibm->all_drivers);
5550 if (ibm->flags.acpi_notify_installed) {
5551 dbg_printk(TPACPI_DBG_EXIT,
5552 "%s: acpi_remove_notify_handler\n", ibm->name);
5554 acpi_remove_notify_handler(*ibm->acpi->handle,
5556 dispatch_acpi_notify);
5557 ibm->flags.acpi_notify_installed = 0;
5558 ibm->flags.acpi_notify_installed = 0;
5561 if (ibm->flags.proc_created) {
5562 dbg_printk(TPACPI_DBG_EXIT,
5563 "%s: remove_proc_entry\n", ibm->name);
5564 remove_proc_entry(ibm->name, proc_dir);
5565 ibm->flags.proc_created = 0;
5568 if (ibm->flags.acpi_driver_registered) {
5569 dbg_printk(TPACPI_DBG_EXIT,
5570 "%s: acpi_bus_unregister_driver\n", ibm->name);
5572 acpi_bus_unregister_driver(ibm->acpi->driver);
5573 kfree(ibm->acpi->driver);
5574 ibm->acpi->driver = NULL;
5575 ibm->flags.acpi_driver_registered = 0;
5578 if (ibm->flags.init_called && ibm->exit) {
5580 ibm->flags.init_called = 0;
5583 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
5586 static int __init ibm_init(struct ibm_init_struct *iibm)
5589 struct ibm_struct *ibm = iibm->data;
5590 struct proc_dir_entry *entry;
5592 BUG_ON(ibm == NULL);
5594 INIT_LIST_HEAD(&ibm->all_drivers);
5596 if (ibm->flags.experimental && !experimental)
5599 dbg_printk(TPACPI_DBG_INIT,
5600 "probing for %s\n", ibm->name);
5603 ret = iibm->init(iibm);
5605 return 0; /* probe failed */
5609 ibm->flags.init_called = 1;
5613 if (ibm->acpi->hid) {
5614 ret = register_tpacpi_subdriver(ibm);
5619 if (ibm->acpi->notify) {
5620 ret = setup_acpi_notify(ibm);
5621 if (ret == -ENODEV) {
5622 printk(TPACPI_NOTICE "disabling subdriver %s\n",
5632 dbg_printk(TPACPI_DBG_INIT,
5633 "%s installed\n", ibm->name);
5636 entry = create_proc_entry(ibm->name,
5637 S_IFREG | S_IRUGO | S_IWUSR,
5640 printk(TPACPI_ERR "unable to create proc entry %s\n",
5645 entry->owner = THIS_MODULE;
5647 entry->read_proc = &dispatch_procfs_read;
5649 entry->write_proc = &dispatch_procfs_write;
5650 ibm->flags.proc_created = 1;
5653 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
5658 dbg_printk(TPACPI_DBG_INIT,
5659 "%s: at error exit path with result %d\n",
5663 return (ret < 0)? ret : 0;
5668 static void __init get_thinkpad_model_data(struct thinkpad_id_data *tp)
5670 const struct dmi_device *dev = NULL;
5671 char ec_fw_string[18];
5676 memset(tp, 0, sizeof(*tp));
5678 if (dmi_name_in_vendors("IBM"))
5679 tp->vendor = PCI_VENDOR_ID_IBM;
5680 else if (dmi_name_in_vendors("LENOVO"))
5681 tp->vendor = PCI_VENDOR_ID_LENOVO;
5685 tp->bios_version_str = kstrdup(dmi_get_system_info(DMI_BIOS_VERSION),
5687 if (!tp->bios_version_str)
5689 tp->bios_model = tp->bios_version_str[0]
5690 | (tp->bios_version_str[1] << 8);
5693 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
5694 * X32 or newer, all Z series; Some models must have an
5695 * up-to-date BIOS or they will not be detected.
5697 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
5699 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
5700 if (sscanf(dev->name,
5701 "IBM ThinkPad Embedded Controller -[%17c",
5702 ec_fw_string) == 1) {
5703 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
5704 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
5706 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
5707 tp->ec_model = ec_fw_string[0]
5708 | (ec_fw_string[1] << 8);
5713 tp->model_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_VERSION),
5715 if (strnicmp(tp->model_str, "ThinkPad", 8) != 0) {
5716 kfree(tp->model_str);
5717 tp->model_str = NULL;
5721 static int __init probe_for_thinkpad(void)
5729 * Non-ancient models have better DMI tagging, but very old models
5732 is_thinkpad = (thinkpad_id.model_str != NULL);
5734 /* ec is required because many other handles are relative to it */
5735 TPACPI_ACPIHANDLE_INIT(ec);
5739 "Not yet supported ThinkPad detected!\n");
5744 * Risks a regression on very old machines, but reduces potential
5745 * false positives a damn great deal
5748 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
5750 if (!is_thinkpad && !force_load)
5757 /* Module init, exit, parameters */
5759 static struct ibm_init_struct ibms_init[] __initdata = {
5761 .init = thinkpad_acpi_driver_init,
5762 .data = &thinkpad_acpi_driver_data,
5765 .init = hotkey_init,
5766 .data = &hotkey_driver_data,
5769 .init = bluetooth_init,
5770 .data = &bluetooth_driver_data,
5774 .data = &wan_driver_data,
5778 .data = &video_driver_data,
5782 .data = &light_driver_data,
5784 #ifdef CONFIG_THINKPAD_ACPI_DOCK
5787 .data = &dock_driver_data[0],
5791 .data = &dock_driver_data[1],
5794 #ifdef CONFIG_THINKPAD_ACPI_BAY
5797 .data = &bay_driver_data,
5802 .data = &cmos_driver_data,
5806 .data = &led_driver_data,
5810 .data = &beep_driver_data,
5813 .init = thermal_init,
5814 .data = &thermal_driver_data,
5817 .data = &ecdump_driver_data,
5820 .init = brightness_init,
5821 .data = &brightness_driver_data,
5824 .data = &volume_driver_data,
5828 .data = &fan_driver_data,
5832 static int __init set_ibm_param(const char *val, struct kernel_param *kp)
5835 struct ibm_struct *ibm;
5837 if (!kp || !kp->name || !val)
5840 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
5841 ibm = ibms_init[i].data;
5842 WARN_ON(ibm == NULL);
5844 if (!ibm || !ibm->name)
5847 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
5848 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
5850 strcpy(ibms_init[i].param, val);
5851 strcat(ibms_init[i].param, ",");
5859 module_param(experimental, int, 0);
5860 MODULE_PARM_DESC(experimental,
5861 "Enables experimental features when non-zero");
5863 module_param_named(debug, dbg_level, uint, 0);
5864 MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
5866 module_param(force_load, bool, 0);
5867 MODULE_PARM_DESC(force_load,
5868 "Attempts to load the driver even on a "
5869 "mis-identified ThinkPad when true");
5871 module_param_named(fan_control, fan_control_allowed, bool, 0);
5872 MODULE_PARM_DESC(fan_control,
5873 "Enables setting fan parameters features when true");
5875 module_param_named(brightness_mode, brightness_mode, int, 0);
5876 MODULE_PARM_DESC(brightness_mode,
5877 "Selects brightness control strategy: "
5878 "0=auto, 1=EC, 2=CMOS, 3=both");
5880 module_param(brightness_enable, uint, 0);
5881 MODULE_PARM_DESC(brightness_enable,
5882 "Enables backlight control when 1, disables when 0");
5884 module_param(hotkey_report_mode, uint, 0);
5885 MODULE_PARM_DESC(hotkey_report_mode,
5886 "used for backwards compatibility with userspace, "
5887 "see documentation");
5889 #define TPACPI_PARAM(feature) \
5890 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
5891 MODULE_PARM_DESC(feature, "Simulates thinkpad-aci procfs command " \
5892 "at module load, see documentation")
5894 TPACPI_PARAM(hotkey);
5895 TPACPI_PARAM(bluetooth);
5896 TPACPI_PARAM(video);
5897 TPACPI_PARAM(light);
5898 #ifdef CONFIG_THINKPAD_ACPI_DOCK
5901 #ifdef CONFIG_THINKPAD_ACPI_BAY
5903 #endif /* CONFIG_THINKPAD_ACPI_BAY */
5907 TPACPI_PARAM(ecdump);
5908 TPACPI_PARAM(brightness);
5909 TPACPI_PARAM(volume);
5912 static void thinkpad_acpi_module_exit(void)
5914 struct ibm_struct *ibm, *itmp;
5916 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
5918 list_for_each_entry_safe_reverse(ibm, itmp,
5919 &tpacpi_all_drivers,
5924 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
5926 if (tpacpi_inputdev) {
5927 if (tp_features.input_device_registered)
5928 input_unregister_device(tpacpi_inputdev);
5930 input_free_device(tpacpi_inputdev);
5934 hwmon_device_unregister(tpacpi_hwmon);
5936 if (tp_features.sensors_pdev_attrs_registered)
5937 device_remove_file(&tpacpi_sensors_pdev->dev,
5938 &dev_attr_thinkpad_acpi_pdev_name);
5939 if (tpacpi_sensors_pdev)
5940 platform_device_unregister(tpacpi_sensors_pdev);
5942 platform_device_unregister(tpacpi_pdev);
5944 if (tp_features.sensors_pdrv_attrs_registered)
5945 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
5946 if (tp_features.platform_drv_attrs_registered)
5947 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
5949 if (tp_features.sensors_pdrv_registered)
5950 platform_driver_unregister(&tpacpi_hwmon_pdriver);
5952 if (tp_features.platform_drv_registered)
5953 platform_driver_unregister(&tpacpi_pdriver);
5956 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
5958 kfree(thinkpad_id.bios_version_str);
5959 kfree(thinkpad_id.ec_version_str);
5960 kfree(thinkpad_id.model_str);
5964 static int __init thinkpad_acpi_module_init(void)
5968 tpacpi_lifecycle = TPACPI_LIFE_INIT;
5970 /* Parameter checking */
5971 if (hotkey_report_mode > 2)
5974 /* Driver-level probe */
5976 get_thinkpad_model_data(&thinkpad_id);
5977 ret = probe_for_thinkpad();
5979 thinkpad_acpi_module_exit();
5983 /* Driver initialization */
5985 TPACPI_ACPIHANDLE_INIT(ecrd);
5986 TPACPI_ACPIHANDLE_INIT(ecwr);
5988 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
5991 "unable to create proc dir " TPACPI_PROC_DIR);
5992 thinkpad_acpi_module_exit();
5995 proc_dir->owner = THIS_MODULE;
5997 ret = platform_driver_register(&tpacpi_pdriver);
6000 "unable to register main platform driver\n");
6001 thinkpad_acpi_module_exit();
6004 tp_features.platform_drv_registered = 1;
6006 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
6009 "unable to register hwmon platform driver\n");
6010 thinkpad_acpi_module_exit();
6013 tp_features.sensors_pdrv_registered = 1;
6015 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
6017 tp_features.platform_drv_attrs_registered = 1;
6018 ret = tpacpi_create_driver_attributes(
6019 &tpacpi_hwmon_pdriver.driver);
6023 "unable to create sysfs driver attributes\n");
6024 thinkpad_acpi_module_exit();
6027 tp_features.sensors_pdrv_attrs_registered = 1;
6030 /* Device initialization */
6031 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
6033 if (IS_ERR(tpacpi_pdev)) {
6034 ret = PTR_ERR(tpacpi_pdev);
6036 printk(TPACPI_ERR "unable to register platform device\n");
6037 thinkpad_acpi_module_exit();
6040 tpacpi_sensors_pdev = platform_device_register_simple(
6041 TPACPI_HWMON_DRVR_NAME,
6043 if (IS_ERR(tpacpi_sensors_pdev)) {
6044 ret = PTR_ERR(tpacpi_sensors_pdev);
6045 tpacpi_sensors_pdev = NULL;
6047 "unable to register hwmon platform device\n");
6048 thinkpad_acpi_module_exit();
6051 ret = device_create_file(&tpacpi_sensors_pdev->dev,
6052 &dev_attr_thinkpad_acpi_pdev_name);
6055 "unable to create sysfs hwmon device attributes\n");
6056 thinkpad_acpi_module_exit();
6059 tp_features.sensors_pdev_attrs_registered = 1;
6060 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
6061 if (IS_ERR(tpacpi_hwmon)) {
6062 ret = PTR_ERR(tpacpi_hwmon);
6063 tpacpi_hwmon = NULL;
6064 printk(TPACPI_ERR "unable to register hwmon device\n");
6065 thinkpad_acpi_module_exit();
6068 mutex_init(&tpacpi_inputdev_send_mutex);
6069 tpacpi_inputdev = input_allocate_device();
6070 if (!tpacpi_inputdev) {
6071 printk(TPACPI_ERR "unable to allocate input device\n");
6072 thinkpad_acpi_module_exit();
6075 /* Prepare input device, but don't register */
6076 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
6077 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
6078 tpacpi_inputdev->id.bustype = BUS_HOST;
6079 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
6080 thinkpad_id.vendor :
6082 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
6083 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
6085 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
6086 ret = ibm_init(&ibms_init[i]);
6087 if (ret >= 0 && *ibms_init[i].param)
6088 ret = ibms_init[i].data->write(ibms_init[i].param);
6090 thinkpad_acpi_module_exit();
6094 ret = input_register_device(tpacpi_inputdev);
6096 printk(TPACPI_ERR "unable to register input device\n");
6097 thinkpad_acpi_module_exit();
6100 tp_features.input_device_registered = 1;
6103 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
6107 /* Please remove this in year 2009 */
6108 MODULE_ALIAS("ibm_acpi");
6111 * DMI matching for module autoloading
6113 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
6114 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
6116 * Only models listed in thinkwiki will be supported, so add yours
6117 * if it is not there yet.
6119 #define IBM_BIOS_MODULE_ALIAS(__type) \
6120 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW")
6122 /* Non-ancient thinkpads */
6123 MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
6124 MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
6126 /* Ancient thinkpad BIOSes have to be identified by
6127 * BIOS type or model number, and there are far less
6128 * BIOS types than model numbers... */
6129 IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]");
6130 IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]");
6131 IBM_BIOS_MODULE_ALIAS("K[U,X-Z]");
6133 MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
6134 MODULE_DESCRIPTION(TPACPI_DESC);
6135 MODULE_VERSION(TPACPI_VERSION);
6136 MODULE_LICENSE("GPL");
6138 module_init(thinkpad_acpi_module_init);
6139 module_exit(thinkpad_acpi_module_exit);