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 IBM_VERSION "0.14"
25 #define TPACPI_SYSFS_VERSION 0x000100
29 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
32 * 2006-11-22 0.13 new maintainer
33 * changelog now lives in git commit history, and will
34 * not be updated further in-file.
36 * 2005-08-17 0.12 fix compilation on 2.6.13-rc kernels
37 * 2005-03-17 0.11 support for 600e, 770x
38 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
39 * support for 770e, G41
40 * G40 and G41 don't have a thinklight
41 * temperatures no longer experimental
42 * experimental brightness control
43 * experimental volume control
44 * experimental fan enable/disable
45 * 2005-01-16 0.10 fix module loading on R30, R31
46 * 2005-01-16 0.9 support for 570, R30, R31
47 * ultrabay support on A22p, A3x
48 * limit arg for cmos, led, beep, drop experimental status
49 * more capable led control on A21e, A22p, T20-22, X20
50 * experimental temperatures and fan speed
51 * experimental embedded controller register dump
52 * mark more functions as __init, drop incorrect __exit
54 * thanks to Henrik Brix Andersen <brix@gentoo.org>
55 * fix parameter passing on module loading
56 * thanks to Rusty Russell <rusty@rustcorp.com.au>
57 * thanks to Jim Radford <radford@blackbean.org>
58 * 2004-11-08 0.8 fix init error case, don't return from a macro
59 * thanks to Chris Wright <chrisw@osdl.org>
60 * 2004-10-23 0.7 fix module loading on A21e, A22p, T20, T21, X20
61 * fix led control on A21e
62 * 2004-10-19 0.6 use acpi_bus_register_driver() to claim HKEY device
63 * 2004-10-18 0.5 thinklight support on A21e, G40, R32, T20, T21, X20
64 * proc file format changed
65 * video_switch command
66 * experimental cmos control
67 * experimental led control
68 * experimental acpi sounds
69 * 2004-09-16 0.4 support for module parameters
70 * hotkey mask can be prefixed by 0x
71 * video output switching
72 * video expansion control
73 * ultrabay eject support
74 * removed lcd brightness/on/off control, didn't work
75 * 2004-08-17 0.3 support for R40
76 * lcd off, brightness control
78 * 2004-08-14 0.2 support for T series, X20
79 * bluetooth enable/disable
80 * hotkey events disabled by default
81 * removed fan control, currently useless
82 * 2004-08-09 0.1 initial release, support for X series
85 #include "thinkpad_acpi.h"
87 MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
88 MODULE_DESCRIPTION(IBM_DESC);
89 MODULE_VERSION(IBM_VERSION);
90 MODULE_LICENSE("GPL");
92 /* Please remove this in year 2009 */
93 MODULE_ALIAS("ibm_acpi");
95 #define __unused __attribute__ ((unused))
97 /****************************************************************************
98 ****************************************************************************
100 * ACPI Helpers and device model
102 ****************************************************************************
103 ****************************************************************************/
105 /*************************************************************************
109 static acpi_handle root_handle = NULL;
111 #define IBM_HANDLE(object, parent, paths...) \
112 static acpi_handle object##_handle; \
113 static acpi_handle *object##_parent = &parent##_handle; \
114 static char *object##_path; \
115 static char *object##_paths[] = { paths }
117 IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
118 "\\_SB.PCI.ISA.EC", /* 570 */
119 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
120 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
121 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
122 "\\_SB.PCI0.ICH3.EC0", /* R31 */
123 "\\_SB.PCI0.LPC.EC", /* all others */
126 IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */
127 IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */
130 /*************************************************************************
134 IBM_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */
135 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
136 "\\CMS", /* R40, R40e */
139 IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
140 "^HKEY", /* R30, R31 */
141 "HKEY", /* all others */
145 /*************************************************************************
149 static int acpi_evalf(acpi_handle handle,
150 void *res, char *method, char *fmt, ...)
153 struct acpi_object_list params;
154 union acpi_object in_objs[IBM_MAX_ACPI_ARGS];
155 struct acpi_buffer result, *resultp;
156 union acpi_object out_obj;
164 printk(IBM_ERR "acpi_evalf() called with empty format\n");
177 params.pointer = &in_objs[0];
184 in_objs[params.count].integer.value = va_arg(ap, int);
185 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
187 /* add more types as needed */
189 printk(IBM_ERR "acpi_evalf() called "
190 "with invalid format character '%c'\n", c);
196 if (res_type != 'v') {
197 result.length = sizeof(out_obj);
198 result.pointer = &out_obj;
203 status = acpi_evaluate_object(handle, method, ¶ms, resultp);
208 *(int *)res = out_obj.integer.value;
209 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
212 success = status == AE_OK;
214 /* add more types as needed */
216 printk(IBM_ERR "acpi_evalf() called "
217 "with invalid format character '%c'\n", res_type);
221 if (!success && !quiet)
222 printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
223 method, fmt0, status);
228 static void __unused acpi_print_int(acpi_handle handle, char *method)
232 if (acpi_evalf(handle, &i, method, "d"))
233 printk(IBM_INFO "%s = 0x%x\n", method, i);
235 printk(IBM_ERR "error calling %s\n", method);
238 static int acpi_ec_read(int i, u8 * p)
243 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
247 if (ec_read(i, p) < 0)
254 static int acpi_ec_write(int i, u8 v)
257 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
260 if (ec_write(i, v) < 0)
267 static int _sta(acpi_handle handle)
271 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
277 static int issue_thinkpad_cmos_command(int cmos_cmd)
282 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
288 /*************************************************************************
292 static void drv_acpi_handle_init(char *name,
293 acpi_handle *handle, acpi_handle parent,
294 char **paths, int num_paths, char **path)
299 for (i = 0; i < num_paths; i++) {
300 status = acpi_get_handle(parent, paths[i], handle);
301 if (ACPI_SUCCESS(status)) {
310 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
312 struct ibm_struct *ibm = data;
314 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
317 ibm->acpi->notify(ibm, event);
320 static int __init setup_acpi_notify(struct ibm_struct *ibm)
327 if (!*ibm->acpi->handle)
330 dbg_printk(TPACPI_DBG_INIT,
331 "setting up ACPI notify for %s\n", ibm->name);
333 ret = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
335 printk(IBM_ERR "%s device not present\n", ibm->name);
339 acpi_driver_data(ibm->acpi->device) = ibm;
340 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
341 IBM_ACPI_EVENT_PREFIX,
344 status = acpi_install_notify_handler(*ibm->acpi->handle,
345 ibm->acpi->type, dispatch_acpi_notify, ibm);
346 if (ACPI_FAILURE(status)) {
347 if (status == AE_ALREADY_EXISTS) {
348 printk(IBM_NOTICE "another device driver is already handling %s events\n",
351 printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
356 ibm->flags.acpi_notify_installed = 1;
360 static int __init tpacpi_device_add(struct acpi_device *device)
365 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
369 dbg_printk(TPACPI_DBG_INIT,
370 "registering %s as an ACPI driver\n", ibm->name);
374 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
375 if (!ibm->acpi->driver) {
376 printk(IBM_ERR "kzalloc(ibm->driver) failed\n");
380 sprintf(ibm->acpi->driver->name, "%s_%s", IBM_NAME, ibm->name);
381 ibm->acpi->driver->ids = ibm->acpi->hid;
382 ibm->acpi->driver->ops.add = &tpacpi_device_add;
384 ret = acpi_bus_register_driver(ibm->acpi->driver);
386 printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
387 ibm->acpi->hid, ret);
388 kfree(ibm->acpi->driver);
389 ibm->acpi->driver = NULL;
391 ibm->flags.acpi_driver_registered = 1;
397 /****************************************************************************
398 ****************************************************************************
402 ****************************************************************************
403 ****************************************************************************/
405 static int dispatch_procfs_read(char *page, char **start, off_t off,
406 int count, int *eof, void *data)
408 struct ibm_struct *ibm = data;
411 if (!ibm || !ibm->read)
414 len = ibm->read(page);
418 if (len <= off + count)
430 static int dispatch_procfs_write(struct file *file,
431 const char __user * userbuf,
432 unsigned long count, void *data)
434 struct ibm_struct *ibm = data;
438 if (!ibm || !ibm->write)
441 kernbuf = kmalloc(count + 2, GFP_KERNEL);
445 if (copy_from_user(kernbuf, userbuf, count)) {
451 strcat(kernbuf, ",");
452 ret = ibm->write(kernbuf);
461 static char *next_cmd(char **cmds)
466 while ((end = strchr(start, ',')) && end == start)
478 /****************************************************************************
479 ****************************************************************************
481 * Device model: hwmon and platform
483 ****************************************************************************
484 ****************************************************************************/
486 static struct platform_device *tpacpi_pdev = NULL;
487 static struct class_device *tpacpi_hwmon = NULL;
489 static struct platform_driver tpacpi_pdriver = {
491 .name = IBM_DRVR_NAME,
492 .owner = THIS_MODULE,
497 /*************************************************************************
498 * thinkpad-acpi driver attributes
501 /* interface_version --------------------------------------------------- */
502 static ssize_t tpacpi_driver_interface_version_show(
503 struct device_driver *drv,
506 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
509 static DRIVER_ATTR(interface_version, S_IRUGO,
510 tpacpi_driver_interface_version_show, NULL);
512 /* debug_level --------------------------------------------------------- */
513 static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
516 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
519 static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
520 const char *buf, size_t count)
524 if (parse_strtoul(buf, 0xffff, &t))
532 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
533 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
535 /* version ------------------------------------------------------------- */
536 static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
539 return snprintf(buf, PAGE_SIZE, "%s v%s\n", IBM_DESC, IBM_VERSION);
542 static DRIVER_ATTR(version, S_IRUGO,
543 tpacpi_driver_version_show, NULL);
545 /* --------------------------------------------------------------------- */
547 static struct driver_attribute* tpacpi_driver_attributes[] = {
548 &driver_attr_debug_level, &driver_attr_version,
549 &driver_attr_interface_version,
552 static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
558 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
559 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
566 static void tpacpi_remove_driver_attributes(struct device_driver *drv)
570 for(i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
571 driver_remove_file(drv, tpacpi_driver_attributes[i]);
574 /*************************************************************************
575 * sysfs support helpers
578 struct attribute_set_obj {
579 struct attribute_set s;
581 } __attribute__((packed));
583 static struct attribute_set *create_attr_set(unsigned int max_members,
586 struct attribute_set_obj *sobj;
588 if (max_members == 0)
591 /* Allocates space for implicit NULL at the end too */
592 sobj = kzalloc(sizeof(struct attribute_set_obj) +
593 max_members * sizeof(struct attribute *),
597 sobj->s.max_members = max_members;
598 sobj->s.group.attrs = &sobj->a;
599 sobj->s.group.name = name;
604 /* not multi-threaded safe, use it in a single thread per set */
605 static int add_to_attr_set(struct attribute_set* s, struct attribute *attr)
610 if (s->members >= s->max_members)
613 s->group.attrs[s->members] = attr;
619 static int add_many_to_attr_set(struct attribute_set* s,
620 struct attribute **attr,
625 for (i = 0; i < count; i++) {
626 res = add_to_attr_set(s, attr[i]);
634 static void delete_attr_set(struct attribute_set* s, struct kobject *kobj)
636 sysfs_remove_group(kobj, &s->group);
640 static int parse_strtoul(const char *buf,
641 unsigned long max, unsigned long *value)
645 *value = simple_strtoul(buf, &endp, 0);
646 while (*endp && isspace(*endp))
648 if (*endp || *value > max)
654 /****************************************************************************
655 ****************************************************************************
659 ****************************************************************************
660 ****************************************************************************/
662 /*************************************************************************
663 * thinkpad-acpi init subdriver
666 static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
668 printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
669 printk(IBM_INFO "%s\n", IBM_URL);
671 if (ibm_thinkpad_ec_found)
672 printk(IBM_INFO "ThinkPad EC firmware %s\n",
673 ibm_thinkpad_ec_found);
678 static int thinkpad_acpi_driver_read(char *p)
682 len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
683 len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
688 static struct ibm_struct thinkpad_acpi_driver_data = {
690 .read = thinkpad_acpi_driver_read,
693 /*************************************************************************
697 static int hotkey_orig_status;
698 static int hotkey_orig_mask;
700 static int __init hotkey_init(struct ibm_init_struct *iibm)
704 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
706 IBM_ACPIHANDLE_INIT(hkey);
707 mutex_init(&hotkey_mutex);
709 /* hotkey not supported on 570 */
710 tp_features.hotkey = hkey_handle != NULL;
712 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
713 str_supported(tp_features.hotkey));
715 if (tp_features.hotkey) {
716 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
717 A30, R30, R31, T20-22, X20-21, X22-24 */
718 tp_features.hotkey_mask =
719 acpi_evalf(hkey_handle, NULL, "DHKN", "qv");
721 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
722 str_supported(tp_features.hotkey_mask));
724 res = hotkey_get(&hotkey_orig_status, &hotkey_orig_mask);
729 return (tp_features.hotkey)? 0 : 1;
732 static void hotkey_exit(void)
736 if (tp_features.hotkey) {
737 dbg_printk(TPACPI_DBG_EXIT, "restoring original hotkey mask\n");
738 res = hotkey_set(hotkey_orig_status, hotkey_orig_mask);
740 printk(IBM_ERR "failed to restore hotkey to BIOS defaults\n");
744 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
748 if (acpi_evalf(hkey_handle, &hkey, "MHKP", "d"))
749 acpi_bus_generate_event(ibm->acpi->device, event, hkey);
751 printk(IBM_ERR "unknown hotkey event %d\n", event);
752 acpi_bus_generate_event(ibm->acpi->device, event, 0);
757 * Call with hotkey_mutex held
759 static int hotkey_get(int *status, int *mask)
761 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
764 if (tp_features.hotkey_mask)
765 if (!acpi_evalf(hkey_handle, mask, "DHKN", "d"))
772 * Call with hotkey_mutex held
774 static int hotkey_set(int status, int mask)
778 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
781 if (tp_features.hotkey_mask)
782 for (i = 0; i < 32; i++) {
783 int bit = ((1 << i) & mask) != 0;
784 if (!acpi_evalf(hkey_handle,
785 NULL, "MHKM", "vdd", i + 1, bit))
792 static int hotkey_read(char *p)
794 int res, status, mask;
797 if (!tp_features.hotkey) {
798 len += sprintf(p + len, "status:\t\tnot supported\n");
802 res = mutex_lock_interruptible(&hotkey_mutex);
805 res = hotkey_get(&status, &mask);
806 mutex_unlock(&hotkey_mutex);
810 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
811 if (tp_features.hotkey_mask) {
812 len += sprintf(p + len, "mask:\t\t0x%04x\n", mask);
813 len += sprintf(p + len,
814 "commands:\tenable, disable, reset, <mask>\n");
816 len += sprintf(p + len, "mask:\t\tnot supported\n");
817 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
823 static int hotkey_write(char *buf)
825 int res, status, mask;
829 if (!tp_features.hotkey)
832 res = mutex_lock_interruptible(&hotkey_mutex);
836 res = hotkey_get(&status, &mask);
841 while ((cmd = next_cmd(&buf))) {
842 if (strlencmp(cmd, "enable") == 0) {
844 } else if (strlencmp(cmd, "disable") == 0) {
846 } else if (strlencmp(cmd, "reset") == 0) {
847 status = hotkey_orig_status;
848 mask = hotkey_orig_mask;
849 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
851 } else if (sscanf(cmd, "%x", &mask) == 1) {
861 res = hotkey_set(status, mask);
864 mutex_unlock(&hotkey_mutex);
868 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
870 .notify = hotkey_notify,
871 .handle = &hkey_handle,
872 .type = ACPI_DEVICE_NOTIFY,
875 static struct ibm_struct hotkey_driver_data = {
878 .write = hotkey_write,
880 .acpi = &ibm_hotkey_acpidriver,
883 /*************************************************************************
884 * Bluetooth subdriver
887 static int __init bluetooth_init(struct ibm_init_struct *iibm)
891 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
893 IBM_ACPIHANDLE_INIT(hkey);
895 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
896 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
897 tp_features.bluetooth = hkey_handle &&
898 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
900 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
901 str_supported(tp_features.bluetooth),
904 if (tp_features.bluetooth &&
905 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
906 /* no bluetooth hardware present in system */
907 tp_features.bluetooth = 0;
908 dbg_printk(TPACPI_DBG_INIT,
909 "bluetooth hardware not installed\n");
912 return (tp_features.bluetooth)? 0 : 1;
915 static int bluetooth_get_radiosw(void)
919 if (!tp_features.bluetooth)
922 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
925 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0);
928 static int bluetooth_set_radiosw(int radio_on)
932 if (!tp_features.bluetooth)
935 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
938 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
940 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
941 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
947 static int bluetooth_read(char *p)
950 int status = bluetooth_get_radiosw();
952 if (!tp_features.bluetooth)
953 len += sprintf(p + len, "status:\t\tnot supported\n");
955 len += sprintf(p + len, "status:\t\t%s\n",
956 (status)? "enabled" : "disabled");
957 len += sprintf(p + len, "commands:\tenable, disable\n");
963 static int bluetooth_write(char *buf)
967 if (!tp_features.bluetooth)
970 while ((cmd = next_cmd(&buf))) {
971 if (strlencmp(cmd, "enable") == 0) {
972 bluetooth_set_radiosw(1);
973 } else if (strlencmp(cmd, "disable") == 0) {
974 bluetooth_set_radiosw(0);
982 static struct ibm_struct bluetooth_driver_data = {
984 .read = bluetooth_read,
985 .write = bluetooth_write,
988 /*************************************************************************
992 static int __init wan_init(struct ibm_init_struct *iibm)
996 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
998 IBM_ACPIHANDLE_INIT(hkey);
1000 tp_features.wan = hkey_handle &&
1001 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
1003 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
1004 str_supported(tp_features.wan),
1007 if (tp_features.wan &&
1008 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
1009 /* no wan hardware present in system */
1010 tp_features.wan = 0;
1011 dbg_printk(TPACPI_DBG_INIT,
1012 "wan hardware not installed\n");
1015 return (tp_features.wan)? 0 : 1;
1018 static int wan_get_radiosw(void)
1022 if (!tp_features.wan)
1025 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1028 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0);
1031 static int wan_set_radiosw(int radio_on)
1035 if (!tp_features.wan)
1038 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1041 status |= TP_ACPI_WANCARD_RADIOSSW;
1043 status &= ~TP_ACPI_WANCARD_RADIOSSW;
1044 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
1050 static int wan_read(char *p)
1053 int status = wan_get_radiosw();
1055 if (!tp_features.wan)
1056 len += sprintf(p + len, "status:\t\tnot supported\n");
1058 len += sprintf(p + len, "status:\t\t%s\n",
1059 (status)? "enabled" : "disabled");
1060 len += sprintf(p + len, "commands:\tenable, disable\n");
1066 static int wan_write(char *buf)
1070 if (!tp_features.wan)
1073 while ((cmd = next_cmd(&buf))) {
1074 if (strlencmp(cmd, "enable") == 0) {
1076 } else if (strlencmp(cmd, "disable") == 0) {
1085 static struct ibm_struct wan_driver_data = {
1089 .flags.experimental = 1,
1092 /*************************************************************************
1096 static enum video_access_mode video_supported;
1097 static int video_orig_autosw;
1099 IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
1100 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
1101 "\\_SB.PCI0.VID0", /* 770e */
1102 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
1103 "\\_SB.PCI0.AGP.VID", /* all others */
1106 IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
1108 static int __init video_init(struct ibm_init_struct *iibm)
1112 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
1114 IBM_ACPIHANDLE_INIT(vid);
1115 IBM_ACPIHANDLE_INIT(vid2);
1117 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
1118 /* G41, assume IVGA doesn't change */
1119 vid_handle = vid2_handle;
1122 /* video switching not supported on R30, R31 */
1123 video_supported = TPACPI_VIDEO_NONE;
1124 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
1126 video_supported = TPACPI_VIDEO_570;
1127 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
1128 /* 600e/x, 770e, 770x */
1129 video_supported = TPACPI_VIDEO_770;
1132 video_supported = TPACPI_VIDEO_NEW;
1134 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
1135 str_supported(video_supported != TPACPI_VIDEO_NONE),
1138 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1141 static void video_exit(void)
1143 dbg_printk(TPACPI_DBG_EXIT,
1144 "restoring original video autoswitch mode\n");
1145 if (video_autosw_set(video_orig_autosw))
1146 printk(IBM_ERR "error while trying to restore original "
1147 "video autoswitch mode\n");
1150 static int video_outputsw_get(void)
1155 switch (video_supported) {
1156 case TPACPI_VIDEO_570:
1157 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
1158 TP_ACPI_VIDEO_570_PHSCMD))
1160 status = i & TP_ACPI_VIDEO_570_PHSMASK;
1162 case TPACPI_VIDEO_770:
1163 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
1166 status |= TP_ACPI_VIDEO_S_LCD;
1167 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
1170 status |= TP_ACPI_VIDEO_S_CRT;
1172 case TPACPI_VIDEO_NEW:
1173 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
1174 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
1177 status |= TP_ACPI_VIDEO_S_CRT;
1179 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
1180 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
1183 status |= TP_ACPI_VIDEO_S_LCD;
1184 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
1187 status |= TP_ACPI_VIDEO_S_DVI;
1196 static int video_outputsw_set(int status)
1201 switch (video_supported) {
1202 case TPACPI_VIDEO_570:
1203 res = acpi_evalf(NULL, NULL,
1204 "\\_SB.PHS2", "vdd",
1205 TP_ACPI_VIDEO_570_PHS2CMD,
1206 status | TP_ACPI_VIDEO_570_PHS2SET);
1208 case TPACPI_VIDEO_770:
1209 autosw = video_autosw_get();
1213 res = video_autosw_set(1);
1216 res = acpi_evalf(vid_handle, NULL,
1217 "ASWT", "vdd", status * 0x100, 0);
1218 if (!autosw && video_autosw_set(autosw)) {
1219 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1223 case TPACPI_VIDEO_NEW:
1224 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
1225 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
1231 return (res)? 0 : -EIO;
1234 static int video_autosw_get(void)
1238 switch (video_supported) {
1239 case TPACPI_VIDEO_570:
1240 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
1243 case TPACPI_VIDEO_770:
1244 case TPACPI_VIDEO_NEW:
1245 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
1255 static int video_autosw_set(int enable)
1257 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
1262 static int video_outputsw_cycle(void)
1264 int autosw = video_autosw_get();
1270 switch (video_supported) {
1271 case TPACPI_VIDEO_570:
1272 res = video_autosw_set(1);
1275 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
1277 case TPACPI_VIDEO_770:
1278 case TPACPI_VIDEO_NEW:
1279 res = video_autosw_set(1);
1282 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
1287 if (!autosw && video_autosw_set(autosw)) {
1288 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1292 return (res)? 0 : -EIO;
1295 static int video_expand_toggle(void)
1297 switch (video_supported) {
1298 case TPACPI_VIDEO_570:
1299 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
1301 case TPACPI_VIDEO_770:
1302 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
1304 case TPACPI_VIDEO_NEW:
1305 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
1313 static int video_read(char *p)
1318 if (video_supported == TPACPI_VIDEO_NONE) {
1319 len += sprintf(p + len, "status:\t\tnot supported\n");
1323 status = video_outputsw_get();
1327 autosw = video_autosw_get();
1331 len += sprintf(p + len, "status:\t\tsupported\n");
1332 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
1333 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
1334 if (video_supported == TPACPI_VIDEO_NEW)
1335 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
1336 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
1337 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
1338 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
1339 if (video_supported == TPACPI_VIDEO_NEW)
1340 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
1341 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
1342 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
1347 static int video_write(char *buf)
1350 int enable, disable, status;
1353 if (video_supported == TPACPI_VIDEO_NONE)
1359 while ((cmd = next_cmd(&buf))) {
1360 if (strlencmp(cmd, "lcd_enable") == 0) {
1361 enable |= TP_ACPI_VIDEO_S_LCD;
1362 } else if (strlencmp(cmd, "lcd_disable") == 0) {
1363 disable |= TP_ACPI_VIDEO_S_LCD;
1364 } else if (strlencmp(cmd, "crt_enable") == 0) {
1365 enable |= TP_ACPI_VIDEO_S_CRT;
1366 } else if (strlencmp(cmd, "crt_disable") == 0) {
1367 disable |= TP_ACPI_VIDEO_S_CRT;
1368 } else if (video_supported == TPACPI_VIDEO_NEW &&
1369 strlencmp(cmd, "dvi_enable") == 0) {
1370 enable |= TP_ACPI_VIDEO_S_DVI;
1371 } else if (video_supported == TPACPI_VIDEO_NEW &&
1372 strlencmp(cmd, "dvi_disable") == 0) {
1373 disable |= TP_ACPI_VIDEO_S_DVI;
1374 } else if (strlencmp(cmd, "auto_enable") == 0) {
1375 res = video_autosw_set(1);
1378 } else if (strlencmp(cmd, "auto_disable") == 0) {
1379 res = video_autosw_set(0);
1382 } else if (strlencmp(cmd, "video_switch") == 0) {
1383 res = video_outputsw_cycle();
1386 } else if (strlencmp(cmd, "expand_toggle") == 0) {
1387 res = video_expand_toggle();
1394 if (enable || disable) {
1395 status = video_outputsw_get();
1398 res = video_outputsw_set((status & ~disable) | enable);
1406 static struct ibm_struct video_driver_data = {
1409 .write = video_write,
1413 /*************************************************************************
1414 * Light (thinklight) subdriver
1417 IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
1418 IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
1420 static int __init light_init(struct ibm_init_struct *iibm)
1422 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
1424 IBM_ACPIHANDLE_INIT(ledb);
1425 IBM_ACPIHANDLE_INIT(lght);
1426 IBM_ACPIHANDLE_INIT(cmos);
1428 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
1429 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
1431 if (tp_features.light)
1432 /* light status not supported on
1433 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
1434 tp_features.light_status =
1435 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1437 vdbg_printk(TPACPI_DBG_INIT, "light is %s\n",
1438 str_supported(tp_features.light));
1440 return (tp_features.light)? 0 : 1;
1443 static int light_read(char *p)
1448 if (!tp_features.light) {
1449 len += sprintf(p + len, "status:\t\tnot supported\n");
1450 } else if (!tp_features.light_status) {
1451 len += sprintf(p + len, "status:\t\tunknown\n");
1452 len += sprintf(p + len, "commands:\ton, off\n");
1454 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
1456 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
1457 len += sprintf(p + len, "commands:\ton, off\n");
1463 static int light_write(char *buf)
1465 int cmos_cmd, lght_cmd;
1469 if (!tp_features.light)
1472 while ((cmd = next_cmd(&buf))) {
1473 if (strlencmp(cmd, "on") == 0) {
1476 } else if (strlencmp(cmd, "off") == 0) {
1482 success = cmos_handle ?
1483 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
1484 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
1492 static struct ibm_struct light_driver_data = {
1495 .write = light_write,
1498 /*************************************************************************
1502 #ifdef CONFIG_THINKPAD_ACPI_DOCK
1504 IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
1505 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
1506 "\\_SB.PCI0.PCI1.DOCK", /* all others */
1507 "\\_SB.PCI.ISA.SLCE", /* 570 */
1508 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
1510 /* don't list other alternatives as we install a notify handler on the 570 */
1511 IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
1513 #define dock_docked() (_sta(dock_handle) & 1)
1515 static int __init dock_init(struct ibm_init_struct *iibm)
1517 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
1519 IBM_ACPIHANDLE_INIT(dock);
1520 IBM_ACPIHANDLE_INIT(pci);
1522 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
1523 str_supported(dock_handle != NULL));
1525 return (dock_handle)? 0 : 1;
1528 static void dock_notify(struct ibm_struct *ibm, u32 event)
1530 int docked = dock_docked();
1531 int pci = ibm->acpi->hid && strstr(ibm->acpi->hid, IBM_PCI_HID);
1533 if (event == 1 && !pci) /* 570 */
1534 acpi_bus_generate_event(ibm->acpi->device, event, 1); /* button */
1535 else if (event == 1 && pci) /* 570 */
1536 acpi_bus_generate_event(ibm->acpi->device, event, 3); /* dock */
1537 else if (event == 3 && docked)
1538 acpi_bus_generate_event(ibm->acpi->device, event, 1); /* button */
1539 else if (event == 3 && !docked)
1540 acpi_bus_generate_event(ibm->acpi->device, event, 2); /* undock */
1541 else if (event == 0 && docked)
1542 acpi_bus_generate_event(ibm->acpi->device, event, 3); /* dock */
1544 printk(IBM_ERR "unknown dock event %d, status %d\n",
1545 event, _sta(dock_handle));
1546 acpi_bus_generate_event(ibm->acpi->device, event, 0); /* unknown */
1550 static int dock_read(char *p)
1553 int docked = dock_docked();
1556 len += sprintf(p + len, "status:\t\tnot supported\n");
1558 len += sprintf(p + len, "status:\t\tundocked\n");
1560 len += sprintf(p + len, "status:\t\tdocked\n");
1561 len += sprintf(p + len, "commands:\tdock, undock\n");
1567 static int dock_write(char *buf)
1574 while ((cmd = next_cmd(&buf))) {
1575 if (strlencmp(cmd, "undock") == 0) {
1576 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
1577 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
1579 } else if (strlencmp(cmd, "dock") == 0) {
1580 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
1589 static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
1591 .notify = dock_notify,
1592 .handle = &dock_handle,
1593 .type = ACPI_SYSTEM_NOTIFY,
1597 .notify = dock_notify,
1598 .handle = &pci_handle,
1599 .type = ACPI_SYSTEM_NOTIFY,
1603 static struct ibm_struct dock_driver_data[2] = {
1607 .write = dock_write,
1608 .acpi = &ibm_dock_acpidriver[0],
1612 .acpi = &ibm_dock_acpidriver[1],
1616 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
1618 /*************************************************************************
1622 #ifdef CONFIG_THINKPAD_ACPI_BAY
1623 IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
1624 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
1625 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
1626 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
1627 ); /* A21e, R30, R31 */
1628 IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
1629 "_EJ0", /* all others */
1630 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
1631 IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
1632 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
1634 IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
1638 static int __init bay_init(struct ibm_init_struct *iibm)
1640 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
1642 IBM_ACPIHANDLE_INIT(bay);
1644 IBM_ACPIHANDLE_INIT(bay_ej);
1645 IBM_ACPIHANDLE_INIT(bay2);
1647 IBM_ACPIHANDLE_INIT(bay2_ej);
1649 tp_features.bay_status = bay_handle &&
1650 acpi_evalf(bay_handle, NULL, "_STA", "qv");
1651 tp_features.bay_status2 = bay2_handle &&
1652 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
1654 tp_features.bay_eject = bay_handle && bay_ej_handle &&
1655 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
1656 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
1657 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
1659 vdbg_printk(TPACPI_DBG_INIT,
1660 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
1661 str_supported(tp_features.bay_status),
1662 str_supported(tp_features.bay_eject),
1663 str_supported(tp_features.bay_status2),
1664 str_supported(tp_features.bay_eject2));
1666 return (tp_features.bay_status || tp_features.bay_eject ||
1667 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
1670 static void bay_notify(struct ibm_struct *ibm, u32 event)
1672 acpi_bus_generate_event(ibm->acpi->device, event, 0);
1675 #define bay_occupied(b) (_sta(b##_handle) & 1)
1677 static int bay_read(char *p)
1680 int occupied = bay_occupied(bay);
1681 int occupied2 = bay_occupied(bay2);
1684 len += sprintf(p + len, "status:\t\t%s\n",
1685 tp_features.bay_status ?
1686 (occupied ? "occupied" : "unoccupied") :
1688 if (tp_features.bay_status2)
1689 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
1690 "occupied" : "unoccupied");
1692 eject = tp_features.bay_eject && occupied;
1693 eject2 = tp_features.bay_eject2 && occupied2;
1695 if (eject && eject2)
1696 len += sprintf(p + len, "commands:\teject, eject2\n");
1698 len += sprintf(p + len, "commands:\teject\n");
1700 len += sprintf(p + len, "commands:\teject2\n");
1705 static int bay_write(char *buf)
1709 if (!tp_features.bay_eject && !tp_features.bay_eject2)
1712 while ((cmd = next_cmd(&buf))) {
1713 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
1714 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
1716 } else if (tp_features.bay_eject2 &&
1717 strlencmp(cmd, "eject2") == 0) {
1718 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
1727 static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
1728 .notify = bay_notify,
1729 .handle = &bay_handle,
1730 .type = ACPI_SYSTEM_NOTIFY,
1733 static struct ibm_struct bay_driver_data = {
1737 .acpi = &ibm_bay_acpidriver,
1740 #endif /* CONFIG_THINKPAD_ACPI_BAY */
1742 /*************************************************************************
1746 /* sysfs cmos_command -------------------------------------------------- */
1747 static ssize_t cmos_command_store(struct device *dev,
1748 struct device_attribute *attr,
1749 const char *buf, size_t count)
1751 unsigned long cmos_cmd;
1754 if (parse_strtoul(buf, 21, &cmos_cmd))
1757 res = issue_thinkpad_cmos_command(cmos_cmd);
1758 return (res)? res : count;
1761 static struct device_attribute dev_attr_cmos_command =
1762 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
1764 /* --------------------------------------------------------------------- */
1766 static int __init cmos_init(struct ibm_init_struct *iibm)
1770 vdbg_printk(TPACPI_DBG_INIT,
1771 "initializing cmos commands subdriver\n");
1773 IBM_ACPIHANDLE_INIT(cmos);
1775 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
1776 str_supported(cmos_handle != NULL));
1778 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
1782 return (cmos_handle)? 0 : 1;
1785 static void cmos_exit(void)
1787 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
1790 static int cmos_read(char *p)
1794 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1795 R30, R31, T20-22, X20-21 */
1797 len += sprintf(p + len, "status:\t\tnot supported\n");
1799 len += sprintf(p + len, "status:\t\tsupported\n");
1800 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1806 static int cmos_write(char *buf)
1811 while ((cmd = next_cmd(&buf))) {
1812 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
1813 cmos_cmd >= 0 && cmos_cmd <= 21) {
1818 res = issue_thinkpad_cmos_command(cmos_cmd);
1826 static struct ibm_struct cmos_driver_data = {
1829 .write = cmos_write,
1833 /*************************************************************************
1837 static enum led_access_mode led_supported;
1839 IBM_HANDLE(led, ec, "SLED", /* 570 */
1840 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
1841 "LED", /* all others */
1844 static int __init led_init(struct ibm_init_struct *iibm)
1846 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
1848 IBM_ACPIHANDLE_INIT(led);
1851 /* led not supported on R30, R31 */
1852 led_supported = TPACPI_LED_NONE;
1853 else if (strlencmp(led_path, "SLED") == 0)
1855 led_supported = TPACPI_LED_570;
1856 else if (strlencmp(led_path, "SYSL") == 0)
1857 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
1858 led_supported = TPACPI_LED_OLD;
1861 led_supported = TPACPI_LED_NEW;
1863 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
1864 str_supported(led_supported), led_supported);
1866 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
1869 #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
1871 static int led_read(char *p)
1875 if (!led_supported) {
1876 len += sprintf(p + len, "status:\t\tnot supported\n");
1879 len += sprintf(p + len, "status:\t\tsupported\n");
1881 if (led_supported == TPACPI_LED_570) {
1884 for (i = 0; i < 8; i++) {
1885 if (!acpi_evalf(ec_handle,
1886 &status, "GLED", "dd", 1 << i))
1888 len += sprintf(p + len, "%d:\t\t%s\n",
1889 i, led_status(status));
1893 len += sprintf(p + len, "commands:\t"
1894 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1899 /* off, on, blink */
1900 static const int led_sled_arg1[] = { 0, 1, 3 };
1901 static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
1902 static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
1903 static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
1905 static int led_write(char *buf)
1913 while ((cmd = next_cmd(&buf))) {
1914 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1917 if (strstr(cmd, "off")) {
1919 } else if (strstr(cmd, "on")) {
1921 } else if (strstr(cmd, "blink")) {
1926 if (led_supported == TPACPI_LED_570) {
1929 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
1930 led, led_sled_arg1[ind]))
1932 } else if (led_supported == TPACPI_LED_OLD) {
1933 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
1935 ret = ec_write(TPACPI_LED_EC_HLMS, led);
1938 ec_write(TPACPI_LED_EC_HLBL,
1939 led * led_exp_hlbl[ind]);
1942 ec_write(TPACPI_LED_EC_HLCL,
1943 led * led_exp_hlcl[ind]);
1948 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
1949 led, led_led_arg1[ind]))
1957 static struct ibm_struct led_driver_data = {
1963 /*************************************************************************
1967 IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
1969 static int __init beep_init(struct ibm_init_struct *iibm)
1971 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
1973 IBM_ACPIHANDLE_INIT(beep);
1975 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
1976 str_supported(beep_handle != NULL));
1978 return (beep_handle)? 0 : 1;
1981 static int beep_read(char *p)
1986 len += sprintf(p + len, "status:\t\tnot supported\n");
1988 len += sprintf(p + len, "status:\t\tsupported\n");
1989 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
1995 static int beep_write(char *buf)
2003 while ((cmd = next_cmd(&buf))) {
2004 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
2005 beep_cmd >= 0 && beep_cmd <= 17) {
2009 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
2016 static struct ibm_struct beep_driver_data = {
2019 .write = beep_write,
2022 /*************************************************************************
2026 static enum thermal_access_mode thermal_read_mode;
2028 /* sysfs temp##_input -------------------------------------------------- */
2030 static ssize_t thermal_temp_input_show(struct device *dev,
2031 struct device_attribute *attr,
2034 struct sensor_device_attribute *sensor_attr =
2035 to_sensor_dev_attr(attr);
2036 int idx = sensor_attr->index;
2040 res = thermal_get_sensor(idx, &value);
2043 if (value == TP_EC_THERMAL_TMP_NA * 1000)
2046 return snprintf(buf, PAGE_SIZE, "%d\n", value);
2049 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
2050 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, thermal_temp_input_show, NULL, _idxB)
2052 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
2053 THERMAL_SENSOR_ATTR_TEMP(1, 0),
2054 THERMAL_SENSOR_ATTR_TEMP(2, 1),
2055 THERMAL_SENSOR_ATTR_TEMP(3, 2),
2056 THERMAL_SENSOR_ATTR_TEMP(4, 3),
2057 THERMAL_SENSOR_ATTR_TEMP(5, 4),
2058 THERMAL_SENSOR_ATTR_TEMP(6, 5),
2059 THERMAL_SENSOR_ATTR_TEMP(7, 6),
2060 THERMAL_SENSOR_ATTR_TEMP(8, 7),
2061 THERMAL_SENSOR_ATTR_TEMP(9, 8),
2062 THERMAL_SENSOR_ATTR_TEMP(10, 9),
2063 THERMAL_SENSOR_ATTR_TEMP(11, 10),
2064 THERMAL_SENSOR_ATTR_TEMP(12, 11),
2065 THERMAL_SENSOR_ATTR_TEMP(13, 12),
2066 THERMAL_SENSOR_ATTR_TEMP(14, 13),
2067 THERMAL_SENSOR_ATTR_TEMP(15, 14),
2068 THERMAL_SENSOR_ATTR_TEMP(16, 15),
2071 #define THERMAL_ATTRS(X) \
2072 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
2074 static struct attribute *thermal_temp_input_attr[] = {
2094 static const struct attribute_group thermal_temp_input16_group = {
2095 .attrs = thermal_temp_input_attr
2098 static const struct attribute_group thermal_temp_input8_group = {
2099 .attrs = &thermal_temp_input_attr[8]
2102 #undef THERMAL_SENSOR_ATTR_TEMP
2103 #undef THERMAL_ATTRS
2105 /* --------------------------------------------------------------------- */
2107 static int __init thermal_init(struct ibm_init_struct *iibm)
2114 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
2116 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
2118 if (ibm_thinkpad_ec_found && experimental) {
2120 * Direct EC access mode: sensors at registers
2121 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
2122 * non-implemented, thermal sensors return 0x80 when
2127 for (i = 0; i < 8; i++) {
2128 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
2134 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
2142 /* This is sheer paranoia, but we handle it anyway */
2145 "ThinkPad ACPI EC access misbehaving, "
2146 "falling back to ACPI TMPx access mode\n");
2147 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
2150 "ThinkPad ACPI EC access misbehaving, "
2151 "disabling thermal sensors access\n");
2152 thermal_read_mode = TPACPI_THERMAL_NONE;
2157 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
2159 } else if (acpi_tmp7) {
2160 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
2161 /* 600e/x, 770e, 770x */
2162 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
2164 /* Standard ACPI TMPx access, max 8 sensors */
2165 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
2168 /* temperatures not supported on 570, G4x, R30, R31, R32 */
2169 thermal_read_mode = TPACPI_THERMAL_NONE;
2172 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
2173 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
2176 switch(thermal_read_mode) {
2177 case TPACPI_THERMAL_TPEC_16:
2178 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2179 &thermal_temp_input16_group);
2183 case TPACPI_THERMAL_TPEC_8:
2184 case TPACPI_THERMAL_ACPI_TMP07:
2185 case TPACPI_THERMAL_ACPI_UPDT:
2186 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
2187 &thermal_temp_input8_group);
2191 case TPACPI_THERMAL_NONE:
2199 static void thermal_exit(void)
2201 switch(thermal_read_mode) {
2202 case TPACPI_THERMAL_TPEC_16:
2203 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2204 &thermal_temp_input16_group);
2206 case TPACPI_THERMAL_TPEC_8:
2207 case TPACPI_THERMAL_ACPI_TMP07:
2208 case TPACPI_THERMAL_ACPI_UPDT:
2209 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
2210 &thermal_temp_input16_group);
2212 case TPACPI_THERMAL_NONE:
2218 /* idx is zero-based */
2219 static int thermal_get_sensor(int idx, s32 *value)
2225 t = TP_EC_THERMAL_TMP0;
2227 switch (thermal_read_mode) {
2228 #if TPACPI_MAX_THERMAL_SENSORS >= 16
2229 case TPACPI_THERMAL_TPEC_16:
2230 if (idx >= 8 && idx <= 15) {
2231 t = TP_EC_THERMAL_TMP8;
2236 case TPACPI_THERMAL_TPEC_8:
2238 if (!acpi_ec_read(t + idx, &tmp))
2240 *value = tmp * 1000;
2245 case TPACPI_THERMAL_ACPI_UPDT:
2247 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
2248 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
2250 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2252 *value = (t - 2732) * 100;
2257 case TPACPI_THERMAL_ACPI_TMP07:
2259 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
2260 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2267 case TPACPI_THERMAL_NONE:
2275 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
2286 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
2289 for(i = 0 ; i < n; i++) {
2290 res = thermal_get_sensor(i, &s->temp[i]);
2298 static int thermal_read(char *p)
2302 struct ibm_thermal_sensors_struct t;
2304 n = thermal_get_sensors(&t);
2305 if (unlikely(n < 0))
2308 len += sprintf(p + len, "temperatures:\t");
2311 for (i = 0; i < (n - 1); i++)
2312 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
2313 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
2315 len += sprintf(p + len, "not supported\n");
2320 static struct ibm_struct thermal_driver_data = {
2322 .read = thermal_read,
2323 .exit = thermal_exit,
2326 /*************************************************************************
2330 static u8 ecdump_regs[256];
2332 static int ecdump_read(char *p)
2338 len += sprintf(p + len, "EC "
2339 " +00 +01 +02 +03 +04 +05 +06 +07"
2340 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
2341 for (i = 0; i < 256; i += 16) {
2342 len += sprintf(p + len, "EC 0x%02x:", i);
2343 for (j = 0; j < 16; j++) {
2344 if (!acpi_ec_read(i + j, &v))
2346 if (v != ecdump_regs[i + j])
2347 len += sprintf(p + len, " *%02x", v);
2349 len += sprintf(p + len, " %02x", v);
2350 ecdump_regs[i + j] = v;
2352 len += sprintf(p + len, "\n");
2357 /* These are way too dangerous to advertise openly... */
2359 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
2360 " (<offset> is 00-ff, <value> is 00-ff)\n");
2361 len += sprintf(p + len, "commands:\t0x<offset> <value> "
2362 " (<offset> is 00-ff, <value> is 0-255)\n");
2367 static int ecdump_write(char *buf)
2372 while ((cmd = next_cmd(&buf))) {
2373 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
2375 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
2379 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
2380 if (!acpi_ec_write(i, v))
2389 static struct ibm_struct ecdump_driver_data = {
2391 .read = ecdump_read,
2392 .write = ecdump_write,
2393 .flags.experimental = 1,
2396 /*************************************************************************
2397 * Backlight/brightness subdriver
2400 static struct backlight_device *ibm_backlight_device = NULL;
2402 static struct backlight_ops ibm_backlight_data = {
2403 .get_brightness = brightness_get,
2404 .update_status = brightness_update_status,
2407 static int __init brightness_init(struct ibm_init_struct *iibm)
2411 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
2413 b = brightness_get(NULL);
2417 ibm_backlight_device = backlight_device_register(
2418 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
2419 &ibm_backlight_data);
2420 if (IS_ERR(ibm_backlight_device)) {
2421 printk(IBM_ERR "Could not register backlight device\n");
2422 return PTR_ERR(ibm_backlight_device);
2424 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
2426 ibm_backlight_device->props.max_brightness = 7;
2427 ibm_backlight_device->props.brightness = b;
2428 backlight_update_status(ibm_backlight_device);
2433 static void brightness_exit(void)
2435 if (ibm_backlight_device) {
2436 vdbg_printk(TPACPI_DBG_EXIT,
2437 "calling backlight_device_unregister()\n");
2438 backlight_device_unregister(ibm_backlight_device);
2439 ibm_backlight_device = NULL;
2443 static int brightness_update_status(struct backlight_device *bd)
2445 return brightness_set(
2446 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
2447 bd->props.power == FB_BLANK_UNBLANK) ?
2448 bd->props.brightness : 0);
2451 static int brightness_get(struct backlight_device *bd)
2454 if (!acpi_ec_read(brightness_offset, &level))
2462 static int brightness_set(int value)
2464 int cmos_cmd, inc, i;
2465 int current_value = brightness_get(NULL);
2469 cmos_cmd = value > current_value ? TP_CMOS_BRIGHTNESS_UP : TP_CMOS_BRIGHTNESS_DOWN;
2470 inc = value > current_value ? 1 : -1;
2471 for (i = current_value; i != value; i += inc) {
2472 if (issue_thinkpad_cmos_command(cmos_cmd))
2474 if (!acpi_ec_write(brightness_offset, i + inc))
2481 static int brightness_read(char *p)
2486 if ((level = brightness_get(NULL)) < 0) {
2487 len += sprintf(p + len, "level:\t\tunreadable\n");
2489 len += sprintf(p + len, "level:\t\t%d\n", level & 0x7);
2490 len += sprintf(p + len, "commands:\tup, down\n");
2491 len += sprintf(p + len, "commands:\tlevel <level>"
2492 " (<level> is 0-7)\n");
2498 static int brightness_write(char *buf)
2504 while ((cmd = next_cmd(&buf))) {
2505 if ((level = brightness_get(NULL)) < 0)
2509 if (strlencmp(cmd, "up") == 0) {
2510 new_level = level == 7 ? 7 : level + 1;
2511 } else if (strlencmp(cmd, "down") == 0) {
2512 new_level = level == 0 ? 0 : level - 1;
2513 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
2514 new_level >= 0 && new_level <= 7) {
2519 brightness_set(new_level);
2525 static struct ibm_struct brightness_driver_data = {
2526 .name = "brightness",
2527 .read = brightness_read,
2528 .write = brightness_write,
2529 .exit = brightness_exit,
2532 /*************************************************************************
2536 static int volume_read(char *p)
2541 if (!acpi_ec_read(volume_offset, &level)) {
2542 len += sprintf(p + len, "level:\t\tunreadable\n");
2544 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
2545 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
2546 len += sprintf(p + len, "commands:\tup, down, mute\n");
2547 len += sprintf(p + len, "commands:\tlevel <level>"
2548 " (<level> is 0-15)\n");
2554 static int volume_write(char *buf)
2556 int cmos_cmd, inc, i;
2558 int new_level, new_mute;
2561 while ((cmd = next_cmd(&buf))) {
2562 if (!acpi_ec_read(volume_offset, &level))
2564 new_mute = mute = level & 0x40;
2565 new_level = level = level & 0xf;
2567 if (strlencmp(cmd, "up") == 0) {
2571 new_level = level == 15 ? 15 : level + 1;
2572 } else if (strlencmp(cmd, "down") == 0) {
2576 new_level = level == 0 ? 0 : level - 1;
2577 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
2578 new_level >= 0 && new_level <= 15) {
2580 } else if (strlencmp(cmd, "mute") == 0) {
2585 if (new_level != level) { /* mute doesn't change */
2586 cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
2587 inc = new_level > level ? 1 : -1;
2589 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
2590 !acpi_ec_write(volume_offset, level)))
2593 for (i = level; i != new_level; i += inc)
2594 if (issue_thinkpad_cmos_command(cmos_cmd) ||
2595 !acpi_ec_write(volume_offset, i + inc))
2598 if (mute && (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
2599 !acpi_ec_write(volume_offset,
2604 if (new_mute != mute) { /* level doesn't change */
2605 cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
2607 if (issue_thinkpad_cmos_command(cmos_cmd) ||
2608 !acpi_ec_write(volume_offset, level + new_mute))
2616 static struct ibm_struct volume_driver_data = {
2618 .read = volume_read,
2619 .write = volume_write,
2622 /*************************************************************************
2629 * TPACPI_FAN_RD_ACPI_GFAN:
2630 * ACPI GFAN method: returns fan level
2632 * see TPACPI_FAN_WR_ACPI_SFAN
2633 * EC 0x2f (HFSP) not available if GFAN exists
2635 * TPACPI_FAN_WR_ACPI_SFAN:
2636 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
2638 * EC 0x2f (HFSP) might be available *for reading*, but do not use
2641 * TPACPI_FAN_WR_TPEC:
2642 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
2643 * Supported on almost all ThinkPads
2645 * Fan speed changes of any sort (including those caused by the
2646 * disengaged mode) are usually done slowly by the firmware as the
2647 * maximum ammount of fan duty cycle change per second seems to be
2650 * Reading is not available if GFAN exists.
2651 * Writing is not available if SFAN exists.
2654 * 7 automatic mode engaged;
2655 * (default operation mode of the ThinkPad)
2656 * fan level is ignored in this mode.
2657 * 6 full speed mode (takes precedence over bit 7);
2658 * not available on all thinkpads. May disable
2659 * the tachometer while the fan controller ramps up
2660 * the speed (which can take up to a few *minutes*).
2661 * Speeds up fan to 100% duty-cycle, which is far above
2662 * the standard RPM levels. It is not impossible that
2663 * it could cause hardware damage.
2664 * 5-3 unused in some models. Extra bits for fan level
2665 * in others, but still useless as all values above
2666 * 7 map to the same speed as level 7 in these models.
2667 * 2-0 fan level (0..7 usually)
2669 * 0x07 = max (set when temperatures critical)
2670 * Some ThinkPads may have other levels, see
2671 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
2673 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
2674 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
2675 * does so, its initial value is meaningless (0x07).
2677 * For firmware bugs, refer to:
2678 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
2682 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
2683 * Main fan tachometer reading (in RPM)
2685 * This register is present on all ThinkPads with a new-style EC, and
2686 * it is known not to be present on the A21m/e, and T22, as there is
2687 * something else in offset 0x84 according to the ACPI DSDT. Other
2688 * ThinkPads from this same time period (and earlier) probably lack the
2689 * tachometer as well.
2691 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
2692 * was never fixed by IBM to report the EC firmware version string
2693 * probably support the tachometer (like the early X models), so
2694 * detecting it is quite hard. We need more data to know for sure.
2696 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
2699 * FIRMWARE BUG: may go stale while the EC is switching to full speed
2702 * For firmware bugs, refer to:
2703 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
2705 * TPACPI_FAN_WR_ACPI_FANS:
2706 * ThinkPad X31, X40, X41. Not available in the X60.
2708 * FANS ACPI handle: takes three arguments: low speed, medium speed,
2709 * high speed. ACPI DSDT seems to map these three speeds to levels
2710 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
2711 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
2713 * The speeds are stored on handles
2714 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
2716 * There are three default speed sets, acessible as handles:
2717 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
2719 * ACPI DSDT switches which set is in use depending on various
2722 * TPACPI_FAN_WR_TPEC is also available and should be used to
2723 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
2724 * but the ACPI tables just mention level 7.
2727 static enum fan_status_access_mode fan_status_access_mode;
2728 static enum fan_control_access_mode fan_control_access_mode;
2729 static enum fan_control_commands fan_control_commands;
2731 static u8 fan_control_initial_status;
2732 static u8 fan_control_desired_level;
2734 static void fan_watchdog_fire(struct work_struct *ignored);
2735 static int fan_watchdog_maxinterval;
2736 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
2738 IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
2739 IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
2740 "\\FSPD", /* 600e/x, 770e, 770x */
2742 IBM_HANDLE(sfan, ec, "SFAN", /* 570 */
2743 "JFNS", /* 770x-JL */
2747 * SYSFS fan layout: hwmon compatible (device)
2750 * 0: "disengaged" mode
2752 * 2: native EC "auto" mode (recommended, hardware default)
2754 * pwm*: set speed in manual mode, ignored otherwise.
2755 * 0 is level 0; 255 is level 7. Intermediate points done with linear
2758 * fan*_input: tachometer reading, RPM
2761 * SYSFS fan layout: extensions
2763 * fan_watchdog (driver):
2764 * fan watchdog interval in seconds, 0 disables (default), max 120
2767 /* sysfs fan pwm1_enable ----------------------------------------------- */
2768 static ssize_t fan_pwm1_enable_show(struct device *dev,
2769 struct device_attribute *attr,
2775 res = fan_get_status_safe(&status);
2779 if (unlikely(tp_features.fan_ctrl_status_undef)) {
2780 if (status != fan_control_initial_status) {
2781 tp_features.fan_ctrl_status_undef = 0;
2783 /* Return most likely status. In fact, it
2784 * might be the only possible status */
2785 status = TP_EC_FAN_AUTO;
2789 if (status & TP_EC_FAN_FULLSPEED) {
2791 } else if (status & TP_EC_FAN_AUTO) {
2796 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
2799 static ssize_t fan_pwm1_enable_store(struct device *dev,
2800 struct device_attribute *attr,
2801 const char *buf, size_t count)
2806 if (parse_strtoul(buf, 2, &t))
2811 level = TP_EC_FAN_FULLSPEED;
2814 level = TPACPI_FAN_LAST_LEVEL;
2817 level = TP_EC_FAN_AUTO;
2820 /* reserved for software-controlled auto mode */
2826 res = fan_set_level_safe(level);
2830 fan_watchdog_reset();
2835 static struct device_attribute dev_attr_fan_pwm1_enable =
2836 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
2837 fan_pwm1_enable_show, fan_pwm1_enable_store);
2839 /* sysfs fan pwm1 ------------------------------------------------------ */
2840 static ssize_t fan_pwm1_show(struct device *dev,
2841 struct device_attribute *attr,
2847 res = fan_get_status_safe(&status);
2851 if (unlikely(tp_features.fan_ctrl_status_undef)) {
2852 if (status != fan_control_initial_status) {
2853 tp_features.fan_ctrl_status_undef = 0;
2855 status = TP_EC_FAN_AUTO;
2860 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
2861 status = fan_control_desired_level;
2866 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
2869 static ssize_t fan_pwm1_store(struct device *dev,
2870 struct device_attribute *attr,
2871 const char *buf, size_t count)
2875 u8 status, newlevel;
2877 if (parse_strtoul(buf, 255, &s))
2880 /* scale down from 0-255 to 0-7 */
2881 newlevel = (s >> 5) & 0x07;
2883 rc = mutex_lock_interruptible(&fan_mutex);
2887 rc = fan_get_status(&status);
2888 if (!rc && (status &
2889 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
2890 rc = fan_set_level(newlevel);
2892 fan_update_desired_level(newlevel);
2893 fan_watchdog_reset();
2896 mutex_unlock(&fan_mutex);
2897 return (rc)? rc : count;
2900 static struct device_attribute dev_attr_fan_pwm1 =
2901 __ATTR(pwm1, S_IWUSR | S_IRUGO,
2902 fan_pwm1_show, fan_pwm1_store);
2904 /* sysfs fan fan1_input ------------------------------------------------ */
2905 static ssize_t fan_fan1_input_show(struct device *dev,
2906 struct device_attribute *attr,
2912 res = fan_get_speed(&speed);
2916 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
2919 static struct device_attribute dev_attr_fan_fan1_input =
2920 __ATTR(fan1_input, S_IRUGO,
2921 fan_fan1_input_show, NULL);
2923 /* sysfs fan fan_watchdog (driver) ------------------------------------- */
2924 static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
2927 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
2930 static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
2931 const char *buf, size_t count)
2935 if (parse_strtoul(buf, 120, &t))
2938 if (!fan_control_allowed)
2941 fan_watchdog_maxinterval = t;
2942 fan_watchdog_reset();
2947 static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
2948 fan_fan_watchdog_show, fan_fan_watchdog_store);
2950 /* --------------------------------------------------------------------- */
2951 static struct attribute *fan_attributes[] = {
2952 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
2953 &dev_attr_fan_fan1_input.attr,
2957 static const struct attribute_group fan_attr_group = {
2958 .attrs = fan_attributes,
2961 static int __init fan_init(struct ibm_init_struct *iibm)
2965 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
2967 mutex_init(&fan_mutex);
2968 fan_status_access_mode = TPACPI_FAN_NONE;
2969 fan_control_access_mode = TPACPI_FAN_WR_NONE;
2970 fan_control_commands = 0;
2971 fan_watchdog_maxinterval = 0;
2972 tp_features.fan_ctrl_status_undef = 0;
2973 fan_control_desired_level = 7;
2975 IBM_ACPIHANDLE_INIT(fans);
2976 IBM_ACPIHANDLE_INIT(gfan);
2977 IBM_ACPIHANDLE_INIT(sfan);
2980 /* 570, 600e/x, 770e, 770x */
2981 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
2983 /* all other ThinkPads: note that even old-style
2984 * ThinkPad ECs supports the fan control register */
2985 if (likely(acpi_ec_read(fan_status_offset,
2986 &fan_control_initial_status))) {
2987 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
2989 /* In some ThinkPads, neither the EC nor the ACPI
2990 * DSDT initialize the fan status, and it ends up
2991 * being set to 0x07 when it *could* be either
2994 * Enable for TP-1Y (T43), TP-78 (R51e),
2995 * TP-76 (R52), TP-70 (T43, R52), which are known
2997 if (fan_control_initial_status == 0x07 &&
2998 ibm_thinkpad_ec_found &&
2999 ((ibm_thinkpad_ec_found[0] == '1' &&
3000 ibm_thinkpad_ec_found[1] == 'Y') ||
3001 (ibm_thinkpad_ec_found[0] == '7' &&
3002 (ibm_thinkpad_ec_found[1] == '6' ||
3003 ibm_thinkpad_ec_found[1] == '8' ||
3004 ibm_thinkpad_ec_found[1] == '0'))
3007 "fan_init: initial fan status is "
3008 "unknown, assuming it is in auto "
3010 tp_features.fan_ctrl_status_undef = 1;
3014 "ThinkPad ACPI EC access misbehaving, "
3015 "fan status and control unavailable\n");
3022 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
3023 fan_control_commands |=
3024 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
3027 /* gfan without sfan means no fan control */
3028 /* all other models implement TP EC 0x2f control */
3032 fan_control_access_mode =
3033 TPACPI_FAN_WR_ACPI_FANS;
3034 fan_control_commands |=
3035 TPACPI_FAN_CMD_SPEED |
3036 TPACPI_FAN_CMD_LEVEL |
3037 TPACPI_FAN_CMD_ENABLE;
3039 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
3040 fan_control_commands |=
3041 TPACPI_FAN_CMD_LEVEL |
3042 TPACPI_FAN_CMD_ENABLE;
3047 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
3048 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
3049 fan_control_access_mode != TPACPI_FAN_WR_NONE),
3050 fan_status_access_mode, fan_control_access_mode);
3052 /* fan control master switch */
3053 if (!fan_control_allowed) {
3054 fan_control_access_mode = TPACPI_FAN_WR_NONE;
3055 fan_control_commands = 0;
3056 dbg_printk(TPACPI_DBG_INIT,
3057 "fan control features disabled by parameter\n");
3060 /* update fan_control_desired_level */
3061 if (fan_status_access_mode != TPACPI_FAN_NONE)
3062 fan_get_status_safe(NULL);
3064 if (fan_status_access_mode != TPACPI_FAN_NONE ||
3065 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
3066 rc = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3069 rc = driver_create_file(&tpacpi_pdriver.driver,
3070 &driver_attr_fan_watchdog);
3079 * Call with fan_mutex held
3081 static void fan_update_desired_level(u8 status)
3084 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3086 fan_control_desired_level = 7;
3088 fan_control_desired_level = status;
3092 static int fan_get_status(u8 *status)
3097 * Add TPACPI_FAN_RD_ACPI_FANS ? */
3099 switch (fan_status_access_mode) {
3100 case TPACPI_FAN_RD_ACPI_GFAN:
3101 /* 570, 600e/x, 770e, 770x */
3103 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
3111 case TPACPI_FAN_RD_TPEC:
3112 /* all except 570, 600e/x, 770e, 770x */
3113 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
3128 static int fan_get_status_safe(u8 *status)
3133 rc = mutex_lock_interruptible(&fan_mutex);
3136 rc = fan_get_status(&s);
3138 fan_update_desired_level(s);
3139 mutex_unlock(&fan_mutex);
3147 static void fan_exit(void)
3149 vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending fan watchdog tasks\n");
3151 /* FIXME: can we really do this unconditionally? */
3152 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &fan_attr_group);
3153 driver_remove_file(&tpacpi_pdriver.driver, &driver_attr_fan_watchdog);
3155 cancel_delayed_work(&fan_watchdog_task);
3156 flush_scheduled_work();
3159 static int fan_get_speed(unsigned int *speed)
3163 switch (fan_status_access_mode) {
3164 case TPACPI_FAN_RD_TPEC:
3165 /* all except 570, 600e/x, 770e, 770x */
3166 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
3167 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
3171 *speed = (hi << 8) | lo;
3182 static void fan_watchdog_fire(struct work_struct *ignored)
3186 printk(IBM_NOTICE "fan watchdog: enabling fan\n");
3187 rc = fan_set_enable();
3189 printk(IBM_ERR "fan watchdog: error %d while enabling fan, "
3190 "will try again later...\n", -rc);
3191 /* reschedule for later */
3192 fan_watchdog_reset();
3196 static void fan_watchdog_reset(void)
3198 static int fan_watchdog_active = 0;
3200 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
3203 if (fan_watchdog_active)
3204 cancel_delayed_work(&fan_watchdog_task);
3206 if (fan_watchdog_maxinterval > 0) {
3207 fan_watchdog_active = 1;
3208 if (!schedule_delayed_work(&fan_watchdog_task,
3209 msecs_to_jiffies(fan_watchdog_maxinterval
3211 printk(IBM_ERR "failed to schedule the fan watchdog, "
3212 "watchdog will not trigger\n");
3215 fan_watchdog_active = 0;
3218 static int fan_set_level(int level)
3220 if (!fan_control_allowed)
3223 switch (fan_control_access_mode) {
3224 case TPACPI_FAN_WR_ACPI_SFAN:
3225 if (level >= 0 && level <= 7) {
3226 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
3232 case TPACPI_FAN_WR_ACPI_FANS:
3233 case TPACPI_FAN_WR_TPEC:
3234 if ((level != TP_EC_FAN_AUTO) &&
3235 (level != TP_EC_FAN_FULLSPEED) &&
3236 ((level < 0) || (level > 7)))
3239 /* safety net should the EC not support AUTO
3240 * or FULLSPEED mode bits and just ignore them */
3241 if (level & TP_EC_FAN_FULLSPEED)
3242 level |= 7; /* safety min speed 7 */
3243 else if (level & TP_EC_FAN_FULLSPEED)
3244 level |= 4; /* safety min speed 4 */
3246 if (!acpi_ec_write(fan_status_offset, level))
3249 tp_features.fan_ctrl_status_undef = 0;
3258 static int fan_set_level_safe(int level)
3262 if (!fan_control_allowed)
3265 rc = mutex_lock_interruptible(&fan_mutex);
3269 if (level == TPACPI_FAN_LAST_LEVEL)
3270 level = fan_control_desired_level;
3272 rc = fan_set_level(level);
3274 fan_update_desired_level(level);
3276 mutex_unlock(&fan_mutex);
3280 static int fan_set_enable(void)
3285 if (!fan_control_allowed)
3288 rc = mutex_lock_interruptible(&fan_mutex);
3292 switch (fan_control_access_mode) {
3293 case TPACPI_FAN_WR_ACPI_FANS:
3294 case TPACPI_FAN_WR_TPEC:
3295 rc = fan_get_status(&s);
3299 /* Don't go out of emergency fan mode */
3302 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
3305 if (!acpi_ec_write(fan_status_offset, s))
3308 tp_features.fan_ctrl_status_undef = 0;
3313 case TPACPI_FAN_WR_ACPI_SFAN:
3314 rc = fan_get_status(&s);
3320 /* Set fan to at least level 4 */
3323 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
3333 mutex_unlock(&fan_mutex);
3337 static int fan_set_disable(void)
3341 if (!fan_control_allowed)
3344 rc = mutex_lock_interruptible(&fan_mutex);
3349 switch (fan_control_access_mode) {
3350 case TPACPI_FAN_WR_ACPI_FANS:
3351 case TPACPI_FAN_WR_TPEC:
3352 if (!acpi_ec_write(fan_status_offset, 0x00))
3355 fan_control_desired_level = 0;
3356 tp_features.fan_ctrl_status_undef = 0;
3360 case TPACPI_FAN_WR_ACPI_SFAN:
3361 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
3364 fan_control_desired_level = 0;
3372 mutex_unlock(&fan_mutex);
3376 static int fan_set_speed(int speed)
3380 if (!fan_control_allowed)
3383 rc = mutex_lock_interruptible(&fan_mutex);
3388 switch (fan_control_access_mode) {
3389 case TPACPI_FAN_WR_ACPI_FANS:
3390 if (speed >= 0 && speed <= 65535) {
3391 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
3392 speed, speed, speed))
3402 mutex_unlock(&fan_mutex);
3406 static int fan_read(char *p)
3411 unsigned int speed = 0;
3413 switch (fan_status_access_mode) {
3414 case TPACPI_FAN_RD_ACPI_GFAN:
3415 /* 570, 600e/x, 770e, 770x */
3416 if ((rc = fan_get_status_safe(&status)) < 0)
3419 len += sprintf(p + len, "status:\t\t%s\n"
3421 (status != 0) ? "enabled" : "disabled", status);
3424 case TPACPI_FAN_RD_TPEC:
3425 /* all except 570, 600e/x, 770e, 770x */
3426 if ((rc = fan_get_status_safe(&status)) < 0)
3429 if (unlikely(tp_features.fan_ctrl_status_undef)) {
3430 if (status != fan_control_initial_status)
3431 tp_features.fan_ctrl_status_undef = 0;
3433 /* Return most likely status. In fact, it
3434 * might be the only possible status */
3435 status = TP_EC_FAN_AUTO;
3438 len += sprintf(p + len, "status:\t\t%s\n",
3439 (status != 0) ? "enabled" : "disabled");
3441 if ((rc = fan_get_speed(&speed)) < 0)
3444 len += sprintf(p + len, "speed:\t\t%d\n", speed);
3446 if (status & TP_EC_FAN_FULLSPEED)
3447 /* Disengaged mode takes precedence */
3448 len += sprintf(p + len, "level:\t\tdisengaged\n");
3449 else if (status & TP_EC_FAN_AUTO)
3450 len += sprintf(p + len, "level:\t\tauto\n");
3452 len += sprintf(p + len, "level:\t\t%d\n", status);
3455 case TPACPI_FAN_NONE:
3457 len += sprintf(p + len, "status:\t\tnot supported\n");
3460 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
3461 len += sprintf(p + len, "commands:\tlevel <level>");
3463 switch (fan_control_access_mode) {
3464 case TPACPI_FAN_WR_ACPI_SFAN:
3465 len += sprintf(p + len, " (<level> is 0-7)\n");
3469 len += sprintf(p + len, " (<level> is 0-7, "
3470 "auto, disengaged, full-speed)\n");
3475 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
3476 len += sprintf(p + len, "commands:\tenable, disable\n"
3477 "commands:\twatchdog <timeout> (<timeout> is 0 (off), "
3478 "1-120 (seconds))\n");
3480 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
3481 len += sprintf(p + len, "commands:\tspeed <speed>"
3482 " (<speed> is 0-65535)\n");
3487 static int fan_write_cmd_level(const char *cmd, int *rc)
3491 if (strlencmp(cmd, "level auto") == 0)
3492 level = TP_EC_FAN_AUTO;
3493 else if ((strlencmp(cmd, "level disengaged") == 0) |
3494 (strlencmp(cmd, "level full-speed") == 0))
3495 level = TP_EC_FAN_FULLSPEED;
3496 else if (sscanf(cmd, "level %d", &level) != 1)
3499 if ((*rc = fan_set_level_safe(level)) == -ENXIO)
3500 printk(IBM_ERR "level command accepted for unsupported "
3501 "access mode %d", fan_control_access_mode);
3506 static int fan_write_cmd_enable(const char *cmd, int *rc)
3508 if (strlencmp(cmd, "enable") != 0)
3511 if ((*rc = fan_set_enable()) == -ENXIO)
3512 printk(IBM_ERR "enable command accepted for unsupported "
3513 "access mode %d", fan_control_access_mode);
3518 static int fan_write_cmd_disable(const char *cmd, int *rc)
3520 if (strlencmp(cmd, "disable") != 0)
3523 if ((*rc = fan_set_disable()) == -ENXIO)
3524 printk(IBM_ERR "disable command accepted for unsupported "
3525 "access mode %d", fan_control_access_mode);
3530 static int fan_write_cmd_speed(const char *cmd, int *rc)
3535 * Support speed <low> <medium> <high> ? */
3537 if (sscanf(cmd, "speed %d", &speed) != 1)
3540 if ((*rc = fan_set_speed(speed)) == -ENXIO)
3541 printk(IBM_ERR "speed command accepted for unsupported "
3542 "access mode %d", fan_control_access_mode);
3547 static int fan_write_cmd_watchdog(const char *cmd, int *rc)
3551 if (sscanf(cmd, "watchdog %d", &interval) != 1)
3554 if (interval < 0 || interval > 120)
3557 fan_watchdog_maxinterval = interval;
3562 static int fan_write(char *buf)
3567 while (!rc && (cmd = next_cmd(&buf))) {
3568 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
3569 fan_write_cmd_level(cmd, &rc)) &&
3570 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
3571 (fan_write_cmd_enable(cmd, &rc) ||
3572 fan_write_cmd_disable(cmd, &rc) ||
3573 fan_write_cmd_watchdog(cmd, &rc))) &&
3574 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
3575 fan_write_cmd_speed(cmd, &rc))
3579 fan_watchdog_reset();
3585 static struct ibm_struct fan_driver_data = {
3592 /****************************************************************************
3593 ****************************************************************************
3597 ****************************************************************************
3598 ****************************************************************************/
3601 static struct proc_dir_entry *proc_dir = NULL;
3603 /* Subdriver registry */
3604 static LIST_HEAD(tpacpi_all_drivers);
3608 * Module and infrastructure proble, init and exit handling
3611 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
3612 static const char * __init str_supported(int is_supported)
3614 static char text_unsupported[] __initdata = "not supported";
3616 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
3618 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
3620 static int __init ibm_init(struct ibm_init_struct *iibm)
3623 struct ibm_struct *ibm = iibm->data;
3624 struct proc_dir_entry *entry;
3626 BUG_ON(ibm == NULL);
3628 INIT_LIST_HEAD(&ibm->all_drivers);
3630 if (ibm->flags.experimental && !experimental)
3633 dbg_printk(TPACPI_DBG_INIT,
3634 "probing for %s\n", ibm->name);
3637 ret = iibm->init(iibm);
3639 return 0; /* probe failed */
3643 ibm->flags.init_called = 1;
3647 if (ibm->acpi->hid) {
3648 ret = register_tpacpi_subdriver(ibm);
3653 if (ibm->acpi->notify) {
3654 ret = setup_acpi_notify(ibm);
3655 if (ret == -ENODEV) {
3656 printk(IBM_NOTICE "disabling subdriver %s\n",
3666 dbg_printk(TPACPI_DBG_INIT,
3667 "%s installed\n", ibm->name);
3670 entry = create_proc_entry(ibm->name,
3671 S_IFREG | S_IRUGO | S_IWUSR,
3674 printk(IBM_ERR "unable to create proc entry %s\n",
3679 entry->owner = THIS_MODULE;
3681 entry->read_proc = &dispatch_procfs_read;
3683 entry->write_proc = &dispatch_procfs_write;
3684 ibm->flags.proc_created = 1;
3687 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
3692 dbg_printk(TPACPI_DBG_INIT,
3693 "%s: at error exit path with result %d\n",
3697 return (ret < 0)? ret : 0;
3700 static void ibm_exit(struct ibm_struct *ibm)
3702 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
3704 list_del_init(&ibm->all_drivers);
3706 if (ibm->flags.acpi_notify_installed) {
3707 dbg_printk(TPACPI_DBG_EXIT,
3708 "%s: acpi_remove_notify_handler\n", ibm->name);
3710 acpi_remove_notify_handler(*ibm->acpi->handle,
3712 dispatch_acpi_notify);
3713 ibm->flags.acpi_notify_installed = 0;
3714 ibm->flags.acpi_notify_installed = 0;
3717 if (ibm->flags.proc_created) {
3718 dbg_printk(TPACPI_DBG_EXIT,
3719 "%s: remove_proc_entry\n", ibm->name);
3720 remove_proc_entry(ibm->name, proc_dir);
3721 ibm->flags.proc_created = 0;
3724 if (ibm->flags.acpi_driver_registered) {
3725 dbg_printk(TPACPI_DBG_EXIT,
3726 "%s: acpi_bus_unregister_driver\n", ibm->name);
3728 acpi_bus_unregister_driver(ibm->acpi->driver);
3729 kfree(ibm->acpi->driver);
3730 ibm->acpi->driver = NULL;
3731 ibm->flags.acpi_driver_registered = 0;
3734 if (ibm->flags.init_called && ibm->exit) {
3736 ibm->flags.init_called = 0;
3739 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
3744 static char *ibm_thinkpad_ec_found = NULL;
3746 static char* __init check_dmi_for_ec(void)
3748 struct dmi_device *dev = NULL;
3749 char ec_fw_string[18];
3752 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
3753 * X32 or newer, all Z series; Some models must have an
3754 * up-to-date BIOS or they will not be detected.
3756 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
3758 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
3759 if (sscanf(dev->name,
3760 "IBM ThinkPad Embedded Controller -[%17c",
3761 ec_fw_string) == 1) {
3762 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
3763 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
3764 return kstrdup(ec_fw_string, GFP_KERNEL);
3770 static int __init probe_for_thinkpad(void)
3778 * Non-ancient models have better DMI tagging, but very old models
3781 is_thinkpad = dmi_name_in_vendors("ThinkPad");
3783 /* ec is required because many other handles are relative to it */
3784 IBM_ACPIHANDLE_INIT(ec);
3788 "Not yet supported ThinkPad detected!\n");
3793 * Risks a regression on very old machines, but reduces potential
3794 * false positives a damn great deal
3797 is_thinkpad = dmi_name_in_vendors("IBM");
3799 if (!is_thinkpad && !force_load)
3806 /* Module init, exit, parameters */
3808 static struct ibm_init_struct ibms_init[] __initdata = {
3810 .init = thinkpad_acpi_driver_init,
3811 .data = &thinkpad_acpi_driver_data,
3814 .init = hotkey_init,
3815 .data = &hotkey_driver_data,
3818 .init = bluetooth_init,
3819 .data = &bluetooth_driver_data,
3823 .data = &wan_driver_data,
3827 .data = &video_driver_data,
3831 .data = &light_driver_data,
3833 #ifdef CONFIG_THINKPAD_ACPI_DOCK
3836 .data = &dock_driver_data[0],
3839 .data = &dock_driver_data[1],
3842 #ifdef CONFIG_THINKPAD_ACPI_BAY
3845 .data = &bay_driver_data,
3850 .data = &cmos_driver_data,
3854 .data = &led_driver_data,
3858 .data = &beep_driver_data,
3861 .init = thermal_init,
3862 .data = &thermal_driver_data,
3865 .data = &ecdump_driver_data,
3868 .init = brightness_init,
3869 .data = &brightness_driver_data,
3872 .data = &volume_driver_data,
3876 .data = &fan_driver_data,
3880 static int __init set_ibm_param(const char *val, struct kernel_param *kp)
3883 struct ibm_struct *ibm;
3885 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
3886 ibm = ibms_init[i].data;
3887 BUG_ON(ibm == NULL);
3889 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
3890 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
3892 strcpy(ibms_init[i].param, val);
3893 strcat(ibms_init[i].param, ",");
3901 static int experimental;
3902 module_param(experimental, int, 0);
3904 static u32 dbg_level;
3905 module_param_named(debug, dbg_level, uint, 0);
3907 static int force_load;
3908 module_param(force_load, int, 0);
3910 static int fan_control_allowed;
3911 module_param_named(fan_control, fan_control_allowed, int, 0);
3913 #define IBM_PARAM(feature) \
3914 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
3917 IBM_PARAM(bluetooth);
3920 #ifdef CONFIG_THINKPAD_ACPI_DOCK
3923 #ifdef CONFIG_THINKPAD_ACPI_BAY
3925 #endif /* CONFIG_THINKPAD_ACPI_BAY */
3930 IBM_PARAM(brightness);
3934 static int __init thinkpad_acpi_module_init(void)
3938 /* Driver-level probe */
3939 ret = probe_for_thinkpad();
3943 /* Driver initialization */
3944 ibm_thinkpad_ec_found = check_dmi_for_ec();
3945 IBM_ACPIHANDLE_INIT(ecrd);
3946 IBM_ACPIHANDLE_INIT(ecwr);
3948 proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir);
3950 printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR);
3951 thinkpad_acpi_module_exit();
3954 proc_dir->owner = THIS_MODULE;
3956 ret = platform_driver_register(&tpacpi_pdriver);
3958 printk(IBM_ERR "unable to register platform driver\n");
3959 thinkpad_acpi_module_exit();
3962 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
3964 printk(IBM_ERR "unable to create sysfs driver attributes\n");
3965 thinkpad_acpi_module_exit();
3970 /* Device initialization */
3971 tpacpi_pdev = platform_device_register_simple(IBM_DRVR_NAME, -1,
3973 if (IS_ERR(tpacpi_pdev)) {
3974 ret = PTR_ERR(tpacpi_pdev);
3976 printk(IBM_ERR "unable to register platform device\n");
3977 thinkpad_acpi_module_exit();
3980 tpacpi_hwmon = hwmon_device_register(&tpacpi_pdev->dev);
3981 if (IS_ERR(tpacpi_hwmon)) {
3982 ret = PTR_ERR(tpacpi_hwmon);
3983 tpacpi_hwmon = NULL;
3984 printk(IBM_ERR "unable to register hwmon device\n");
3985 thinkpad_acpi_module_exit();
3988 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
3989 ret = ibm_init(&ibms_init[i]);
3990 if (ret >= 0 && *ibms_init[i].param)
3991 ret = ibms_init[i].data->write(ibms_init[i].param);
3993 thinkpad_acpi_module_exit();
4001 static void thinkpad_acpi_module_exit(void)
4003 struct ibm_struct *ibm, *itmp;
4005 list_for_each_entry_safe_reverse(ibm, itmp,
4006 &tpacpi_all_drivers,
4011 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
4014 hwmon_device_unregister(tpacpi_hwmon);
4017 platform_device_unregister(tpacpi_pdev);
4019 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
4020 platform_driver_unregister(&tpacpi_pdriver);
4023 remove_proc_entry(IBM_PROC_DIR, acpi_root_dir);
4025 kfree(ibm_thinkpad_ec_found);
4028 module_init(thinkpad_acpi_module_init);
4029 module_exit(thinkpad_acpi_module_exit);