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 "0.16"
25 #define TPACPI_SYSFS_VERSION 0x020000
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");
96 * DMI matching for module autoloading
98 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
99 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
101 * Only models listed in thinkwiki will be supported, so add yours
102 * if it is not there yet.
104 #define IBM_BIOS_MODULE_ALIAS(__type) \
105 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW")
107 /* Non-ancient thinkpads */
108 MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
109 MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
111 /* Ancient thinkpad BIOSes have to be identified by
112 * BIOS type or model number, and there are far less
113 * BIOS types than model numbers... */
114 IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]");
115 IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]");
116 IBM_BIOS_MODULE_ALIAS("K[U,X-Z]");
118 #define __unused __attribute__ ((unused))
121 TPACPI_LIFE_INIT = 0,
126 /****************************************************************************
127 ****************************************************************************
129 * ACPI Helpers and device model
131 ****************************************************************************
132 ****************************************************************************/
134 /*************************************************************************
138 static acpi_handle root_handle;
140 #define IBM_HANDLE(object, parent, paths...) \
141 static acpi_handle object##_handle; \
142 static acpi_handle *object##_parent = &parent##_handle; \
143 static char *object##_path; \
144 static char *object##_paths[] = { paths }
146 IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
147 "\\_SB.PCI.ISA.EC", /* 570 */
148 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
149 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
150 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
151 "\\_SB.PCI0.ICH3.EC0", /* R31 */
152 "\\_SB.PCI0.LPC.EC", /* all others */
155 IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */
156 IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */
159 /*************************************************************************
163 IBM_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */
164 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
165 "\\CMS", /* R40, R40e */
168 IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
169 "^HKEY", /* R30, R31 */
170 "HKEY", /* all others */
174 /*************************************************************************
178 static int acpi_evalf(acpi_handle handle,
179 void *res, char *method, char *fmt, ...)
182 struct acpi_object_list params;
183 union acpi_object in_objs[IBM_MAX_ACPI_ARGS];
184 struct acpi_buffer result, *resultp;
185 union acpi_object out_obj;
193 printk(IBM_ERR "acpi_evalf() called with empty format\n");
206 params.pointer = &in_objs[0];
213 in_objs[params.count].integer.value = va_arg(ap, int);
214 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
216 /* add more types as needed */
218 printk(IBM_ERR "acpi_evalf() called "
219 "with invalid format character '%c'\n", c);
225 if (res_type != 'v') {
226 result.length = sizeof(out_obj);
227 result.pointer = &out_obj;
232 status = acpi_evaluate_object(handle, method, ¶ms, resultp);
237 *(int *)res = out_obj.integer.value;
238 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
241 success = status == AE_OK;
243 /* add more types as needed */
245 printk(IBM_ERR "acpi_evalf() called "
246 "with invalid format character '%c'\n", res_type);
250 if (!success && !quiet)
251 printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
252 method, fmt0, status);
257 static void __unused acpi_print_int(acpi_handle handle, char *method)
261 if (acpi_evalf(handle, &i, method, "d"))
262 printk(IBM_INFO "%s = 0x%x\n", method, i);
264 printk(IBM_ERR "error calling %s\n", method);
267 static int acpi_ec_read(int i, u8 * p)
272 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
276 if (ec_read(i, p) < 0)
283 static int acpi_ec_write(int i, u8 v)
286 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
289 if (ec_write(i, v) < 0)
296 static int _sta(acpi_handle handle)
300 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
306 static int issue_thinkpad_cmos_command(int cmos_cmd)
311 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
317 /*************************************************************************
321 static void drv_acpi_handle_init(char *name,
322 acpi_handle *handle, acpi_handle parent,
323 char **paths, int num_paths, char **path)
328 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
331 for (i = 0; i < num_paths; i++) {
332 status = acpi_get_handle(parent, paths[i], handle);
333 if (ACPI_SUCCESS(status)) {
335 dbg_printk(TPACPI_DBG_INIT,
336 "Found ACPI handle %s for %s\n",
342 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
347 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
349 struct ibm_struct *ibm = data;
351 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
354 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
357 ibm->acpi->notify(ibm, event);
360 static int __init setup_acpi_notify(struct ibm_struct *ibm)
367 if (!*ibm->acpi->handle)
370 vdbg_printk(TPACPI_DBG_INIT,
371 "setting up ACPI notify for %s\n", ibm->name);
373 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
375 printk(IBM_ERR "acpi_bus_get_device(%s) failed: %d\n",
380 acpi_driver_data(ibm->acpi->device) = ibm;
381 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
382 IBM_ACPI_EVENT_PREFIX,
385 status = acpi_install_notify_handler(*ibm->acpi->handle,
386 ibm->acpi->type, dispatch_acpi_notify, ibm);
387 if (ACPI_FAILURE(status)) {
388 if (status == AE_ALREADY_EXISTS) {
389 printk(IBM_NOTICE "another device driver is already handling %s events\n",
392 printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n",
397 ibm->flags.acpi_notify_installed = 1;
401 static int __init tpacpi_device_add(struct acpi_device *device)
406 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
410 dbg_printk(TPACPI_DBG_INIT,
411 "registering %s as an ACPI driver\n", ibm->name);
415 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
416 if (!ibm->acpi->driver) {
417 printk(IBM_ERR "kzalloc(ibm->driver) failed\n");
421 sprintf(ibm->acpi->driver->name, "%s_%s", IBM_NAME, ibm->name);
422 ibm->acpi->driver->ids = ibm->acpi->hid;
424 ibm->acpi->driver->ops.add = &tpacpi_device_add;
426 rc = acpi_bus_register_driver(ibm->acpi->driver);
428 printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n",
430 kfree(ibm->acpi->driver);
431 ibm->acpi->driver = NULL;
433 ibm->flags.acpi_driver_registered = 1;
439 /****************************************************************************
440 ****************************************************************************
444 ****************************************************************************
445 ****************************************************************************/
447 static int dispatch_procfs_read(char *page, char **start, off_t off,
448 int count, int *eof, void *data)
450 struct ibm_struct *ibm = data;
453 if (!ibm || !ibm->read)
456 len = ibm->read(page);
460 if (len <= off + count)
472 static int dispatch_procfs_write(struct file *file,
473 const char __user * userbuf,
474 unsigned long count, void *data)
476 struct ibm_struct *ibm = data;
480 if (!ibm || !ibm->write)
483 kernbuf = kmalloc(count + 2, GFP_KERNEL);
487 if (copy_from_user(kernbuf, userbuf, count)) {
493 strcat(kernbuf, ",");
494 ret = ibm->write(kernbuf);
503 static char *next_cmd(char **cmds)
508 while ((end = strchr(start, ',')) && end == start)
520 /****************************************************************************
521 ****************************************************************************
523 * Device model: input, hwmon and platform
525 ****************************************************************************
526 ****************************************************************************/
528 static struct platform_device *tpacpi_pdev;
529 static struct platform_device *tpacpi_sensors_pdev;
530 static struct device *tpacpi_hwmon;
531 static struct input_dev *tpacpi_inputdev;
532 static struct mutex tpacpi_inputdev_send_mutex;
535 static int tpacpi_resume_handler(struct platform_device *pdev)
537 struct ibm_struct *ibm, *itmp;
539 list_for_each_entry_safe(ibm, itmp,
549 static struct platform_driver tpacpi_pdriver = {
551 .name = IBM_DRVR_NAME,
552 .owner = THIS_MODULE,
554 .resume = tpacpi_resume_handler,
557 static struct platform_driver tpacpi_hwmon_pdriver = {
559 .name = IBM_HWMON_DRVR_NAME,
560 .owner = THIS_MODULE,
564 /*************************************************************************
565 * thinkpad-acpi driver attributes
568 /* interface_version --------------------------------------------------- */
569 static ssize_t tpacpi_driver_interface_version_show(
570 struct device_driver *drv,
573 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
576 static DRIVER_ATTR(interface_version, S_IRUGO,
577 tpacpi_driver_interface_version_show, NULL);
579 /* debug_level --------------------------------------------------------- */
580 static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
583 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
586 static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
587 const char *buf, size_t count)
591 if (parse_strtoul(buf, 0xffff, &t))
599 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
600 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
602 /* version ------------------------------------------------------------- */
603 static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
606 return snprintf(buf, PAGE_SIZE, "%s v%s\n", IBM_DESC, IBM_VERSION);
609 static DRIVER_ATTR(version, S_IRUGO,
610 tpacpi_driver_version_show, NULL);
612 /* --------------------------------------------------------------------- */
614 static struct driver_attribute* tpacpi_driver_attributes[] = {
615 &driver_attr_debug_level, &driver_attr_version,
616 &driver_attr_interface_version,
619 static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
625 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
626 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
633 static void tpacpi_remove_driver_attributes(struct device_driver *drv)
637 for(i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
638 driver_remove_file(drv, tpacpi_driver_attributes[i]);
641 /*************************************************************************
642 * sysfs support helpers
645 struct attribute_set_obj {
646 struct attribute_set s;
648 } __attribute__((packed));
650 static struct attribute_set *create_attr_set(unsigned int max_members,
653 struct attribute_set_obj *sobj;
655 if (max_members == 0)
658 /* Allocates space for implicit NULL at the end too */
659 sobj = kzalloc(sizeof(struct attribute_set_obj) +
660 max_members * sizeof(struct attribute *),
664 sobj->s.max_members = max_members;
665 sobj->s.group.attrs = &sobj->a;
666 sobj->s.group.name = name;
671 /* not multi-threaded safe, use it in a single thread per set */
672 static int add_to_attr_set(struct attribute_set* s, struct attribute *attr)
677 if (s->members >= s->max_members)
680 s->group.attrs[s->members] = attr;
686 static int add_many_to_attr_set(struct attribute_set* s,
687 struct attribute **attr,
692 for (i = 0; i < count; i++) {
693 res = add_to_attr_set(s, attr[i]);
701 static void delete_attr_set(struct attribute_set* s, struct kobject *kobj)
703 sysfs_remove_group(kobj, &s->group);
707 static int parse_strtoul(const char *buf,
708 unsigned long max, unsigned long *value)
712 while (*buf && isspace(*buf))
714 *value = simple_strtoul(buf, &endp, 0);
715 while (*endp && isspace(*endp))
717 if (*endp || *value > max)
723 /****************************************************************************
724 ****************************************************************************
728 ****************************************************************************
729 ****************************************************************************/
731 /*************************************************************************
732 * thinkpad-acpi init subdriver
735 static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
737 printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION);
738 printk(IBM_INFO "%s\n", IBM_URL);
740 printk(IBM_INFO "ThinkPad BIOS %s, EC %s\n",
741 (thinkpad_id.bios_version_str) ?
742 thinkpad_id.bios_version_str : "unknown",
743 (thinkpad_id.ec_version_str) ?
744 thinkpad_id.ec_version_str : "unknown");
746 if (thinkpad_id.vendor && thinkpad_id.model_str)
747 printk(IBM_INFO "%s %s\n",
748 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
749 "IBM" : ((thinkpad_id.vendor ==
750 PCI_VENDOR_ID_LENOVO) ?
751 "Lenovo" : "Unknown vendor"),
752 thinkpad_id.model_str);
757 static int thinkpad_acpi_driver_read(char *p)
761 len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC);
762 len += sprintf(p + len, "version:\t%s\n", IBM_VERSION);
767 static struct ibm_struct thinkpad_acpi_driver_data = {
769 .read = thinkpad_acpi_driver_read,
772 /*************************************************************************
776 static int hotkey_orig_status;
777 static u32 hotkey_orig_mask;
778 static u32 hotkey_all_mask;
779 static u32 hotkey_reserved_mask;
781 static u16 *hotkey_keycode_map;
783 static struct attribute_set *hotkey_dev_attributes;
785 static int hotkey_get_wlsw(int *status)
787 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
792 /* sysfs hotkey enable ------------------------------------------------- */
793 static ssize_t hotkey_enable_show(struct device *dev,
794 struct device_attribute *attr,
800 res = hotkey_get(&status, &mask);
804 return snprintf(buf, PAGE_SIZE, "%d\n", status);
807 static ssize_t hotkey_enable_store(struct device *dev,
808 struct device_attribute *attr,
809 const char *buf, size_t count)
815 if (parse_strtoul(buf, 1, &t))
818 res = hotkey_get(&status, &mask);
820 res = hotkey_set(t, mask);
822 return (res) ? res : count;
825 static struct device_attribute dev_attr_hotkey_enable =
826 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
827 hotkey_enable_show, hotkey_enable_store);
829 /* sysfs hotkey mask --------------------------------------------------- */
830 static ssize_t hotkey_mask_show(struct device *dev,
831 struct device_attribute *attr,
837 res = hotkey_get(&status, &mask);
841 return snprintf(buf, PAGE_SIZE, "0x%08x\n", mask);
844 static ssize_t hotkey_mask_store(struct device *dev,
845 struct device_attribute *attr,
846 const char *buf, size_t count)
852 if (parse_strtoul(buf, 0xffffffffUL, &t))
855 res = hotkey_get(&status, &mask);
857 hotkey_set(status, t);
859 return (res) ? res : count;
862 static struct device_attribute dev_attr_hotkey_mask =
863 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
864 hotkey_mask_show, hotkey_mask_store);
866 /* sysfs hotkey bios_enabled ------------------------------------------- */
867 static ssize_t hotkey_bios_enabled_show(struct device *dev,
868 struct device_attribute *attr,
871 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
874 static struct device_attribute dev_attr_hotkey_bios_enabled =
875 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
877 /* sysfs hotkey bios_mask ---------------------------------------------- */
878 static ssize_t hotkey_bios_mask_show(struct device *dev,
879 struct device_attribute *attr,
882 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
885 static struct device_attribute dev_attr_hotkey_bios_mask =
886 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
888 /* sysfs hotkey all_mask ----------------------------------------------- */
889 static ssize_t hotkey_all_mask_show(struct device *dev,
890 struct device_attribute *attr,
893 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_all_mask);
896 static struct device_attribute dev_attr_hotkey_all_mask =
897 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
899 /* sysfs hotkey recommended_mask --------------------------------------- */
900 static ssize_t hotkey_recommended_mask_show(struct device *dev,
901 struct device_attribute *attr,
904 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
905 hotkey_all_mask & ~hotkey_reserved_mask);
908 static struct device_attribute dev_attr_hotkey_recommended_mask =
909 __ATTR(hotkey_recommended_mask, S_IRUGO,
910 hotkey_recommended_mask_show, NULL);
912 /* sysfs hotkey radio_sw ----------------------------------------------- */
913 static ssize_t hotkey_radio_sw_show(struct device *dev,
914 struct device_attribute *attr,
918 res = hotkey_get_wlsw(&s);
922 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
925 static struct device_attribute dev_attr_hotkey_radio_sw =
926 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
928 /* sysfs hotkey report_mode -------------------------------------------- */
929 static ssize_t hotkey_report_mode_show(struct device *dev,
930 struct device_attribute *attr,
933 return snprintf(buf, PAGE_SIZE, "%d\n",
934 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
937 static struct device_attribute dev_attr_hotkey_report_mode =
938 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
940 /* --------------------------------------------------------------------- */
942 static struct attribute *hotkey_attributes[] __initdata = {
943 &dev_attr_hotkey_enable.attr,
944 &dev_attr_hotkey_report_mode.attr,
947 static struct attribute *hotkey_mask_attributes[] __initdata = {
948 &dev_attr_hotkey_mask.attr,
949 &dev_attr_hotkey_bios_enabled.attr,
950 &dev_attr_hotkey_bios_mask.attr,
951 &dev_attr_hotkey_all_mask.attr,
952 &dev_attr_hotkey_recommended_mask.attr,
955 static int __init hotkey_init(struct ibm_init_struct *iibm)
958 static u16 ibm_keycode_map[] __initdata = {
959 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
960 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
961 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
962 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
963 /* Scan codes 0x0C to 0x0F: Other ACPI HKEY hot keys */
964 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
965 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
966 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
967 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
968 /* Scan codes 0x10 to 0x1F: Extended ACPI HKEY hot keys */
969 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
970 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
971 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
972 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
973 KEY_RESERVED, /* 0x14: VOLUME UP */
974 KEY_RESERVED, /* 0x15: VOLUME DOWN */
975 KEY_RESERVED, /* 0x16: MUTE */
976 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
977 /* (assignments unknown, please report if found) */
978 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
979 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
981 static u16 lenovo_keycode_map[] __initdata = {
982 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
983 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
984 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
985 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
986 /* Scan codes 0x0C to 0x0F: Other ACPI HKEY hot keys */
987 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
988 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
989 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
990 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
991 /* Scan codes 0x10 to 0x1F: Extended ACPI HKEY hot keys */
992 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
993 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
994 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
995 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
996 KEY_RESERVED, /* 0x14: VOLUME UP */
997 KEY_RESERVED, /* 0x15: VOLUME DOWN */
998 KEY_RESERVED, /* 0x16: MUTE */
999 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
1000 /* (assignments unknown, please report if found) */
1001 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1002 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
1005 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
1006 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
1007 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
1013 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
1015 BUG_ON(!tpacpi_inputdev);
1017 IBM_ACPIHANDLE_INIT(hkey);
1018 mutex_init(&hotkey_mutex);
1020 /* hotkey not supported on 570 */
1021 tp_features.hotkey = hkey_handle != NULL;
1023 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
1024 str_supported(tp_features.hotkey));
1026 if (tp_features.hotkey) {
1027 hotkey_dev_attributes = create_attr_set(8, NULL);
1028 if (!hotkey_dev_attributes)
1030 res = add_many_to_attr_set(hotkey_dev_attributes,
1032 ARRAY_SIZE(hotkey_attributes));
1036 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1037 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
1038 for HKEY interface version 0x100 */
1039 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
1040 if ((hkeyv >> 8) != 1) {
1041 printk(IBM_ERR "unknown version of the "
1042 "HKEY interface: 0x%x\n", hkeyv);
1043 printk(IBM_ERR "please report this to %s\n",
1047 * MHKV 0x100 in A31, R40, R40e,
1048 * T4x, X31, and later
1050 tp_features.hotkey_mask = 1;
1054 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
1055 str_supported(tp_features.hotkey_mask));
1057 if (tp_features.hotkey_mask) {
1058 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
1061 "missing MHKA handler, "
1062 "please report this to %s\n",
1064 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
1068 res = hotkey_get(&hotkey_orig_status, &hotkey_orig_mask);
1069 if (!res && tp_features.hotkey_mask) {
1070 res = add_many_to_attr_set(hotkey_dev_attributes,
1071 hotkey_mask_attributes,
1072 ARRAY_SIZE(hotkey_mask_attributes));
1075 /* Not all thinkpads have a hardware radio switch */
1076 if (!res && acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
1077 tp_features.hotkey_wlsw = 1;
1079 "radio switch found; radios are %s\n",
1080 enabled(status, 0));
1081 res = add_to_attr_set(hotkey_dev_attributes,
1082 &dev_attr_hotkey_radio_sw.attr);
1086 res = register_attr_set_with_sysfs(
1087 hotkey_dev_attributes,
1088 &tpacpi_pdev->dev.kobj);
1092 /* Set up key map */
1094 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
1096 if (!hotkey_keycode_map) {
1097 printk(IBM_ERR "failed to allocate memory for key map\n");
1101 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
1102 dbg_printk(TPACPI_DBG_INIT,
1103 "using Lenovo default hot key map\n");
1104 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
1105 TPACPI_HOTKEY_MAP_SIZE);
1107 dbg_printk(TPACPI_DBG_INIT,
1108 "using IBM default hot key map\n");
1109 memcpy(hotkey_keycode_map, &ibm_keycode_map,
1110 TPACPI_HOTKEY_MAP_SIZE);
1113 set_bit(EV_KEY, tpacpi_inputdev->evbit);
1114 set_bit(EV_MSC, tpacpi_inputdev->evbit);
1115 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
1116 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
1117 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
1118 tpacpi_inputdev->keycode = hotkey_keycode_map;
1119 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
1120 if (hotkey_keycode_map[i] != KEY_RESERVED) {
1121 set_bit(hotkey_keycode_map[i],
1122 tpacpi_inputdev->keybit);
1124 if (i < sizeof(hotkey_reserved_mask)*8)
1125 hotkey_reserved_mask |= 1 << i;
1129 if (tp_features.hotkey_wlsw) {
1130 set_bit(EV_SW, tpacpi_inputdev->evbit);
1131 set_bit(SW_RADIO, tpacpi_inputdev->swbit);
1134 dbg_printk(TPACPI_DBG_INIT,
1135 "enabling hot key handling\n");
1136 res = hotkey_set(1, (hotkey_all_mask & ~hotkey_reserved_mask)
1137 | hotkey_orig_mask);
1141 dbg_printk(TPACPI_DBG_INIT,
1142 "legacy hot key reporting over procfs %s\n",
1143 (hotkey_report_mode < 2) ?
1144 "enabled" : "disabled");
1147 return (tp_features.hotkey)? 0 : 1;
1150 static void hotkey_exit(void)
1154 if (tp_features.hotkey) {
1155 dbg_printk(TPACPI_DBG_EXIT, "restoring original hotkey mask\n");
1156 res = hotkey_set(hotkey_orig_status, hotkey_orig_mask);
1158 printk(IBM_ERR "failed to restore hotkey to BIOS defaults\n");
1161 if (hotkey_dev_attributes) {
1162 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
1163 hotkey_dev_attributes = NULL;
1167 static void tpacpi_input_send_key(unsigned int scancode,
1168 unsigned int keycode)
1170 if (keycode != KEY_RESERVED) {
1171 mutex_lock(&tpacpi_inputdev_send_mutex);
1173 input_report_key(tpacpi_inputdev, keycode, 1);
1174 if (keycode == KEY_UNKNOWN)
1175 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1177 input_sync(tpacpi_inputdev);
1179 input_report_key(tpacpi_inputdev, keycode, 0);
1180 if (keycode == KEY_UNKNOWN)
1181 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1183 input_sync(tpacpi_inputdev);
1185 mutex_unlock(&tpacpi_inputdev_send_mutex);
1189 static void tpacpi_input_send_radiosw(void)
1193 mutex_lock(&tpacpi_inputdev_send_mutex);
1195 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
1196 input_report_switch(tpacpi_inputdev,
1198 input_sync(tpacpi_inputdev);
1201 mutex_unlock(&tpacpi_inputdev_send_mutex);
1204 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
1207 unsigned int keycode, scancode;
1211 if (event != 0x80) {
1212 printk(IBM_ERR "unknown HKEY notification event %d\n", event);
1213 /* forward it to userspace, maybe it knows how to handle it */
1214 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
1215 ibm->acpi->device->dev.bus_id,
1221 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
1222 printk(IBM_ERR "failed to retrieve HKEY event\n");
1234 switch (hkey >> 12) {
1236 /* 0x1000-0x1FFF: key presses */
1237 scancode = hkey & 0xfff;
1238 if (scancode > 0 && scancode < 0x21) {
1240 keycode = hotkey_keycode_map[scancode];
1241 tpacpi_input_send_key(scancode, keycode);
1244 "hotkey 0x%04x out of range for keyboard map\n",
1250 /* 0x5000-0x5FFF: LID */
1251 /* we don't handle it through this path, just
1252 * eat up known LID events */
1253 if (hkey != 0x5001 && hkey != 0x5002) {
1255 "unknown LID-related HKEY event: 0x%04x\n",
1263 /* 0x7000-0x7FFF: misc */
1264 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
1265 tpacpi_input_send_radiosw();
1268 /* fallthrough to default */
1270 /* case 2: dock-related */
1271 /* 0x2305 - T43 waking up due to bay lever eject while aslept */
1272 /* case 3: ultra-bay related. maybe bay in dock? */
1273 /* 0x3003 - T43 after wake up by bay lever eject (0x2305) */
1274 printk(IBM_NOTICE "unhandled HKEY event 0x%04x\n", hkey);
1279 if (!ignore_acpi_ev && (send_acpi_ev || hotkey_report_mode < 2)) {
1280 acpi_bus_generate_proc_event(ibm->acpi->device, event, hkey);
1283 /* netlink events */
1284 if (!ignore_acpi_ev && send_acpi_ev) {
1285 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
1286 ibm->acpi->device->dev.bus_id,
1292 static void hotkey_resume(void)
1294 tpacpi_input_send_radiosw();
1298 * Call with hotkey_mutex held
1300 static int hotkey_get(int *status, u32 *mask)
1302 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1305 if (tp_features.hotkey_mask)
1306 if (!acpi_evalf(hkey_handle, mask, "DHKN", "d"))
1313 * Call with hotkey_mutex held
1315 static int hotkey_set(int status, u32 mask)
1319 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
1322 if (tp_features.hotkey_mask)
1323 for (i = 0; i < 32; i++) {
1324 int bit = ((1 << i) & mask) != 0;
1325 if (!acpi_evalf(hkey_handle,
1326 NULL, "MHKM", "vdd", i + 1, bit))
1333 /* procfs -------------------------------------------------------------- */
1334 static int hotkey_read(char *p)
1340 if (!tp_features.hotkey) {
1341 len += sprintf(p + len, "status:\t\tnot supported\n");
1345 res = mutex_lock_interruptible(&hotkey_mutex);
1348 res = hotkey_get(&status, &mask);
1349 mutex_unlock(&hotkey_mutex);
1353 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
1354 if (tp_features.hotkey_mask) {
1355 len += sprintf(p + len, "mask:\t\t0x%08x\n", mask);
1356 len += sprintf(p + len,
1357 "commands:\tenable, disable, reset, <mask>\n");
1359 len += sprintf(p + len, "mask:\t\tnot supported\n");
1360 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
1366 static int hotkey_write(char *buf)
1373 if (!tp_features.hotkey)
1376 res = mutex_lock_interruptible(&hotkey_mutex);
1380 res = hotkey_get(&status, &mask);
1385 while ((cmd = next_cmd(&buf))) {
1386 if (strlencmp(cmd, "enable") == 0) {
1388 } else if (strlencmp(cmd, "disable") == 0) {
1390 } else if (strlencmp(cmd, "reset") == 0) {
1391 status = hotkey_orig_status;
1392 mask = hotkey_orig_mask;
1393 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
1395 } else if (sscanf(cmd, "%x", &mask) == 1) {
1405 res = hotkey_set(status, mask);
1408 mutex_unlock(&hotkey_mutex);
1412 static const struct acpi_device_id ibm_htk_device_ids[] = {
1417 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1418 .hid = ibm_htk_device_ids,
1419 .notify = hotkey_notify,
1420 .handle = &hkey_handle,
1421 .type = ACPI_DEVICE_NOTIFY,
1424 static struct ibm_struct hotkey_driver_data = {
1426 .read = hotkey_read,
1427 .write = hotkey_write,
1428 .exit = hotkey_exit,
1429 .resume = hotkey_resume,
1430 .acpi = &ibm_hotkey_acpidriver,
1433 /*************************************************************************
1434 * Bluetooth subdriver
1437 /* sysfs bluetooth enable ---------------------------------------------- */
1438 static ssize_t bluetooth_enable_show(struct device *dev,
1439 struct device_attribute *attr,
1444 status = bluetooth_get_radiosw();
1448 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
1451 static ssize_t bluetooth_enable_store(struct device *dev,
1452 struct device_attribute *attr,
1453 const char *buf, size_t count)
1458 if (parse_strtoul(buf, 1, &t))
1461 res = bluetooth_set_radiosw(t);
1463 return (res) ? res : count;
1466 static struct device_attribute dev_attr_bluetooth_enable =
1467 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
1468 bluetooth_enable_show, bluetooth_enable_store);
1470 /* --------------------------------------------------------------------- */
1472 static struct attribute *bluetooth_attributes[] = {
1473 &dev_attr_bluetooth_enable.attr,
1477 static const struct attribute_group bluetooth_attr_group = {
1478 .attrs = bluetooth_attributes,
1481 static int __init bluetooth_init(struct ibm_init_struct *iibm)
1486 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
1488 IBM_ACPIHANDLE_INIT(hkey);
1490 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1491 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
1492 tp_features.bluetooth = hkey_handle &&
1493 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
1495 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
1496 str_supported(tp_features.bluetooth),
1499 if (tp_features.bluetooth) {
1500 if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
1501 /* no bluetooth hardware present in system */
1502 tp_features.bluetooth = 0;
1503 dbg_printk(TPACPI_DBG_INIT,
1504 "bluetooth hardware not installed\n");
1506 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
1507 &bluetooth_attr_group);
1513 return (tp_features.bluetooth)? 0 : 1;
1516 static void bluetooth_exit(void)
1518 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
1519 &bluetooth_attr_group);
1522 static int bluetooth_get_radiosw(void)
1526 if (!tp_features.bluetooth)
1529 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1532 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0);
1535 static int bluetooth_set_radiosw(int radio_on)
1539 if (!tp_features.bluetooth)
1542 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
1545 status |= TP_ACPI_BLUETOOTH_RADIOSSW;
1547 status &= ~TP_ACPI_BLUETOOTH_RADIOSSW;
1548 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
1554 /* procfs -------------------------------------------------------------- */
1555 static int bluetooth_read(char *p)
1558 int status = bluetooth_get_radiosw();
1560 if (!tp_features.bluetooth)
1561 len += sprintf(p + len, "status:\t\tnot supported\n");
1563 len += sprintf(p + len, "status:\t\t%s\n",
1564 (status)? "enabled" : "disabled");
1565 len += sprintf(p + len, "commands:\tenable, disable\n");
1571 static int bluetooth_write(char *buf)
1575 if (!tp_features.bluetooth)
1578 while ((cmd = next_cmd(&buf))) {
1579 if (strlencmp(cmd, "enable") == 0) {
1580 bluetooth_set_radiosw(1);
1581 } else if (strlencmp(cmd, "disable") == 0) {
1582 bluetooth_set_radiosw(0);
1590 static struct ibm_struct bluetooth_driver_data = {
1591 .name = "bluetooth",
1592 .read = bluetooth_read,
1593 .write = bluetooth_write,
1594 .exit = bluetooth_exit,
1597 /*************************************************************************
1601 /* sysfs wan enable ---------------------------------------------------- */
1602 static ssize_t wan_enable_show(struct device *dev,
1603 struct device_attribute *attr,
1608 status = wan_get_radiosw();
1612 return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0);
1615 static ssize_t wan_enable_store(struct device *dev,
1616 struct device_attribute *attr,
1617 const char *buf, size_t count)
1622 if (parse_strtoul(buf, 1, &t))
1625 res = wan_set_radiosw(t);
1627 return (res) ? res : count;
1630 static struct device_attribute dev_attr_wan_enable =
1631 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
1632 wan_enable_show, wan_enable_store);
1634 /* --------------------------------------------------------------------- */
1636 static struct attribute *wan_attributes[] = {
1637 &dev_attr_wan_enable.attr,
1641 static const struct attribute_group wan_attr_group = {
1642 .attrs = wan_attributes,
1645 static int __init wan_init(struct ibm_init_struct *iibm)
1650 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
1652 IBM_ACPIHANDLE_INIT(hkey);
1654 tp_features.wan = hkey_handle &&
1655 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
1657 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
1658 str_supported(tp_features.wan),
1661 if (tp_features.wan) {
1662 if (!(status & TP_ACPI_WANCARD_HWPRESENT)) {
1663 /* no wan hardware present in system */
1664 tp_features.wan = 0;
1665 dbg_printk(TPACPI_DBG_INIT,
1666 "wan hardware not installed\n");
1668 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
1675 return (tp_features.wan)? 0 : 1;
1678 static void wan_exit(void)
1680 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
1684 static int wan_get_radiosw(void)
1688 if (!tp_features.wan)
1691 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1694 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0);
1697 static int wan_set_radiosw(int radio_on)
1701 if (!tp_features.wan)
1704 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
1707 status |= TP_ACPI_WANCARD_RADIOSSW;
1709 status &= ~TP_ACPI_WANCARD_RADIOSSW;
1710 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
1716 /* procfs -------------------------------------------------------------- */
1717 static int wan_read(char *p)
1720 int status = wan_get_radiosw();
1722 if (!tp_features.wan)
1723 len += sprintf(p + len, "status:\t\tnot supported\n");
1725 len += sprintf(p + len, "status:\t\t%s\n",
1726 (status)? "enabled" : "disabled");
1727 len += sprintf(p + len, "commands:\tenable, disable\n");
1733 static int wan_write(char *buf)
1737 if (!tp_features.wan)
1740 while ((cmd = next_cmd(&buf))) {
1741 if (strlencmp(cmd, "enable") == 0) {
1743 } else if (strlencmp(cmd, "disable") == 0) {
1752 static struct ibm_struct wan_driver_data = {
1757 .flags.experimental = 1,
1760 /*************************************************************************
1764 static enum video_access_mode video_supported;
1765 static int video_orig_autosw;
1767 IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
1768 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
1769 "\\_SB.PCI0.VID0", /* 770e */
1770 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
1771 "\\_SB.PCI0.AGP.VID", /* all others */
1774 IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
1776 static int __init video_init(struct ibm_init_struct *iibm)
1780 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
1782 IBM_ACPIHANDLE_INIT(vid);
1783 IBM_ACPIHANDLE_INIT(vid2);
1785 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
1786 /* G41, assume IVGA doesn't change */
1787 vid_handle = vid2_handle;
1790 /* video switching not supported on R30, R31 */
1791 video_supported = TPACPI_VIDEO_NONE;
1792 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
1794 video_supported = TPACPI_VIDEO_570;
1795 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
1796 /* 600e/x, 770e, 770x */
1797 video_supported = TPACPI_VIDEO_770;
1800 video_supported = TPACPI_VIDEO_NEW;
1802 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
1803 str_supported(video_supported != TPACPI_VIDEO_NONE),
1806 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1809 static void video_exit(void)
1811 dbg_printk(TPACPI_DBG_EXIT,
1812 "restoring original video autoswitch mode\n");
1813 if (video_autosw_set(video_orig_autosw))
1814 printk(IBM_ERR "error while trying to restore original "
1815 "video autoswitch mode\n");
1818 static int video_outputsw_get(void)
1823 switch (video_supported) {
1824 case TPACPI_VIDEO_570:
1825 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
1826 TP_ACPI_VIDEO_570_PHSCMD))
1828 status = i & TP_ACPI_VIDEO_570_PHSMASK;
1830 case TPACPI_VIDEO_770:
1831 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
1834 status |= TP_ACPI_VIDEO_S_LCD;
1835 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
1838 status |= TP_ACPI_VIDEO_S_CRT;
1840 case TPACPI_VIDEO_NEW:
1841 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
1842 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
1845 status |= TP_ACPI_VIDEO_S_CRT;
1847 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
1848 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
1851 status |= TP_ACPI_VIDEO_S_LCD;
1852 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
1855 status |= TP_ACPI_VIDEO_S_DVI;
1864 static int video_outputsw_set(int status)
1869 switch (video_supported) {
1870 case TPACPI_VIDEO_570:
1871 res = acpi_evalf(NULL, NULL,
1872 "\\_SB.PHS2", "vdd",
1873 TP_ACPI_VIDEO_570_PHS2CMD,
1874 status | TP_ACPI_VIDEO_570_PHS2SET);
1876 case TPACPI_VIDEO_770:
1877 autosw = video_autosw_get();
1881 res = video_autosw_set(1);
1884 res = acpi_evalf(vid_handle, NULL,
1885 "ASWT", "vdd", status * 0x100, 0);
1886 if (!autosw && video_autosw_set(autosw)) {
1887 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1891 case TPACPI_VIDEO_NEW:
1892 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
1893 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
1899 return (res)? 0 : -EIO;
1902 static int video_autosw_get(void)
1906 switch (video_supported) {
1907 case TPACPI_VIDEO_570:
1908 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
1911 case TPACPI_VIDEO_770:
1912 case TPACPI_VIDEO_NEW:
1913 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
1923 static int video_autosw_set(int enable)
1925 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
1930 static int video_outputsw_cycle(void)
1932 int autosw = video_autosw_get();
1938 switch (video_supported) {
1939 case TPACPI_VIDEO_570:
1940 res = video_autosw_set(1);
1943 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
1945 case TPACPI_VIDEO_770:
1946 case TPACPI_VIDEO_NEW:
1947 res = video_autosw_set(1);
1950 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
1955 if (!autosw && video_autosw_set(autosw)) {
1956 printk(IBM_ERR "video auto-switch left enabled due to error\n");
1960 return (res)? 0 : -EIO;
1963 static int video_expand_toggle(void)
1965 switch (video_supported) {
1966 case TPACPI_VIDEO_570:
1967 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
1969 case TPACPI_VIDEO_770:
1970 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
1972 case TPACPI_VIDEO_NEW:
1973 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
1981 static int video_read(char *p)
1986 if (video_supported == TPACPI_VIDEO_NONE) {
1987 len += sprintf(p + len, "status:\t\tnot supported\n");
1991 status = video_outputsw_get();
1995 autosw = video_autosw_get();
1999 len += sprintf(p + len, "status:\t\tsupported\n");
2000 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
2001 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
2002 if (video_supported == TPACPI_VIDEO_NEW)
2003 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
2004 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
2005 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
2006 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
2007 if (video_supported == TPACPI_VIDEO_NEW)
2008 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
2009 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
2010 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
2015 static int video_write(char *buf)
2018 int enable, disable, status;
2021 if (video_supported == TPACPI_VIDEO_NONE)
2027 while ((cmd = next_cmd(&buf))) {
2028 if (strlencmp(cmd, "lcd_enable") == 0) {
2029 enable |= TP_ACPI_VIDEO_S_LCD;
2030 } else if (strlencmp(cmd, "lcd_disable") == 0) {
2031 disable |= TP_ACPI_VIDEO_S_LCD;
2032 } else if (strlencmp(cmd, "crt_enable") == 0) {
2033 enable |= TP_ACPI_VIDEO_S_CRT;
2034 } else if (strlencmp(cmd, "crt_disable") == 0) {
2035 disable |= TP_ACPI_VIDEO_S_CRT;
2036 } else if (video_supported == TPACPI_VIDEO_NEW &&
2037 strlencmp(cmd, "dvi_enable") == 0) {
2038 enable |= TP_ACPI_VIDEO_S_DVI;
2039 } else if (video_supported == TPACPI_VIDEO_NEW &&
2040 strlencmp(cmd, "dvi_disable") == 0) {
2041 disable |= TP_ACPI_VIDEO_S_DVI;
2042 } else if (strlencmp(cmd, "auto_enable") == 0) {
2043 res = video_autosw_set(1);
2046 } else if (strlencmp(cmd, "auto_disable") == 0) {
2047 res = video_autosw_set(0);
2050 } else if (strlencmp(cmd, "video_switch") == 0) {
2051 res = video_outputsw_cycle();
2054 } else if (strlencmp(cmd, "expand_toggle") == 0) {
2055 res = video_expand_toggle();
2062 if (enable || disable) {
2063 status = video_outputsw_get();
2066 res = video_outputsw_set((status & ~disable) | enable);
2074 static struct ibm_struct video_driver_data = {
2077 .write = video_write,
2081 /*************************************************************************
2082 * Light (thinklight) subdriver
2085 IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
2086 IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */
2088 static int __init light_init(struct ibm_init_struct *iibm)
2090 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
2092 IBM_ACPIHANDLE_INIT(ledb);
2093 IBM_ACPIHANDLE_INIT(lght);
2094 IBM_ACPIHANDLE_INIT(cmos);
2096 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
2097 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
2099 if (tp_features.light)
2100 /* light status not supported on
2101 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
2102 tp_features.light_status =
2103 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
2105 vdbg_printk(TPACPI_DBG_INIT, "light is %s\n",
2106 str_supported(tp_features.light));
2108 return (tp_features.light)? 0 : 1;
2111 static int light_read(char *p)
2116 if (!tp_features.light) {
2117 len += sprintf(p + len, "status:\t\tnot supported\n");
2118 } else if (!tp_features.light_status) {
2119 len += sprintf(p + len, "status:\t\tunknown\n");
2120 len += sprintf(p + len, "commands:\ton, off\n");
2122 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
2124 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
2125 len += sprintf(p + len, "commands:\ton, off\n");
2131 static int light_write(char *buf)
2133 int cmos_cmd, lght_cmd;
2137 if (!tp_features.light)
2140 while ((cmd = next_cmd(&buf))) {
2141 if (strlencmp(cmd, "on") == 0) {
2144 } else if (strlencmp(cmd, "off") == 0) {
2150 success = cmos_handle ?
2151 acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) :
2152 acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd);
2160 static struct ibm_struct light_driver_data = {
2163 .write = light_write,
2166 /*************************************************************************
2170 #ifdef CONFIG_THINKPAD_ACPI_DOCK
2172 IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
2173 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
2174 "\\_SB.PCI0.PCI1.DOCK", /* all others */
2175 "\\_SB.PCI.ISA.SLCE", /* 570 */
2176 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
2178 /* don't list other alternatives as we install a notify handler on the 570 */
2179 IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
2181 static const struct acpi_device_id ibm_pci_device_ids[] = {
2182 {PCI_ROOT_HID_STRING, 0},
2186 static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
2188 .notify = dock_notify,
2189 .handle = &dock_handle,
2190 .type = ACPI_SYSTEM_NOTIFY,
2193 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
2194 * We just use it to get notifications of dock hotplug
2195 * in very old thinkpads */
2196 .hid = ibm_pci_device_ids,
2197 .notify = dock_notify,
2198 .handle = &pci_handle,
2199 .type = ACPI_SYSTEM_NOTIFY,
2203 static struct ibm_struct dock_driver_data[2] = {
2207 .write = dock_write,
2208 .acpi = &ibm_dock_acpidriver[0],
2212 .acpi = &ibm_dock_acpidriver[1],
2216 #define dock_docked() (_sta(dock_handle) & 1)
2218 static int __init dock_init(struct ibm_init_struct *iibm)
2220 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
2222 IBM_ACPIHANDLE_INIT(dock);
2224 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
2225 str_supported(dock_handle != NULL));
2227 return (dock_handle)? 0 : 1;
2230 static int __init dock_init2(struct ibm_init_struct *iibm)
2234 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
2236 if (dock_driver_data[0].flags.acpi_driver_registered &&
2237 dock_driver_data[0].flags.acpi_notify_installed) {
2238 IBM_ACPIHANDLE_INIT(pci);
2239 dock2_needed = (pci_handle != NULL);
2240 vdbg_printk(TPACPI_DBG_INIT,
2241 "dock PCI handler for the TP 570 is %s\n",
2242 str_supported(dock2_needed));
2244 vdbg_printk(TPACPI_DBG_INIT,
2245 "dock subdriver part 2 not required\n");
2249 return (dock2_needed)? 0 : 1;
2252 static void dock_notify(struct ibm_struct *ibm, u32 event)
2254 int docked = dock_docked();
2255 int pci = ibm->acpi->hid && ibm->acpi->device &&
2256 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
2259 if (event == 1 && !pci) /* 570 */
2260 data = 1; /* button */
2261 else if (event == 1 && pci) /* 570 */
2262 data = 3; /* dock */
2263 else if (event == 3 && docked)
2264 data = 1; /* button */
2265 else if (event == 3 && !docked)
2266 data = 2; /* undock */
2267 else if (event == 0 && docked)
2268 data = 3; /* dock */
2270 printk(IBM_ERR "unknown dock event %d, status %d\n",
2271 event, _sta(dock_handle));
2272 data = 0; /* unknown */
2274 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
2275 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
2276 ibm->acpi->device->dev.bus_id,
2280 static int dock_read(char *p)
2283 int docked = dock_docked();
2286 len += sprintf(p + len, "status:\t\tnot supported\n");
2288 len += sprintf(p + len, "status:\t\tundocked\n");
2290 len += sprintf(p + len, "status:\t\tdocked\n");
2291 len += sprintf(p + len, "commands:\tdock, undock\n");
2297 static int dock_write(char *buf)
2304 while ((cmd = next_cmd(&buf))) {
2305 if (strlencmp(cmd, "undock") == 0) {
2306 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
2307 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
2309 } else if (strlencmp(cmd, "dock") == 0) {
2310 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
2319 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
2321 /*************************************************************************
2325 #ifdef CONFIG_THINKPAD_ACPI_BAY
2326 IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
2327 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
2328 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
2329 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
2330 ); /* A21e, R30, R31 */
2331 IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
2332 "_EJ0", /* all others */
2333 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
2334 IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
2335 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
2337 IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
2341 static int __init bay_init(struct ibm_init_struct *iibm)
2343 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
2345 IBM_ACPIHANDLE_INIT(bay);
2347 IBM_ACPIHANDLE_INIT(bay_ej);
2348 IBM_ACPIHANDLE_INIT(bay2);
2350 IBM_ACPIHANDLE_INIT(bay2_ej);
2352 tp_features.bay_status = bay_handle &&
2353 acpi_evalf(bay_handle, NULL, "_STA", "qv");
2354 tp_features.bay_status2 = bay2_handle &&
2355 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
2357 tp_features.bay_eject = bay_handle && bay_ej_handle &&
2358 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
2359 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
2360 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
2362 vdbg_printk(TPACPI_DBG_INIT,
2363 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
2364 str_supported(tp_features.bay_status),
2365 str_supported(tp_features.bay_eject),
2366 str_supported(tp_features.bay_status2),
2367 str_supported(tp_features.bay_eject2));
2369 return (tp_features.bay_status || tp_features.bay_eject ||
2370 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
2373 static void bay_notify(struct ibm_struct *ibm, u32 event)
2375 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
2376 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
2377 ibm->acpi->device->dev.bus_id,
2381 #define bay_occupied(b) (_sta(b##_handle) & 1)
2383 static int bay_read(char *p)
2386 int occupied = bay_occupied(bay);
2387 int occupied2 = bay_occupied(bay2);
2390 len += sprintf(p + len, "status:\t\t%s\n",
2391 tp_features.bay_status ?
2392 (occupied ? "occupied" : "unoccupied") :
2394 if (tp_features.bay_status2)
2395 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
2396 "occupied" : "unoccupied");
2398 eject = tp_features.bay_eject && occupied;
2399 eject2 = tp_features.bay_eject2 && occupied2;
2401 if (eject && eject2)
2402 len += sprintf(p + len, "commands:\teject, eject2\n");
2404 len += sprintf(p + len, "commands:\teject\n");
2406 len += sprintf(p + len, "commands:\teject2\n");
2411 static int bay_write(char *buf)
2415 if (!tp_features.bay_eject && !tp_features.bay_eject2)
2418 while ((cmd = next_cmd(&buf))) {
2419 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
2420 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
2422 } else if (tp_features.bay_eject2 &&
2423 strlencmp(cmd, "eject2") == 0) {
2424 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
2433 static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
2434 .notify = bay_notify,
2435 .handle = &bay_handle,
2436 .type = ACPI_SYSTEM_NOTIFY,
2439 static struct ibm_struct bay_driver_data = {
2443 .acpi = &ibm_bay_acpidriver,
2446 #endif /* CONFIG_THINKPAD_ACPI_BAY */
2448 /*************************************************************************
2452 /* sysfs cmos_command -------------------------------------------------- */
2453 static ssize_t cmos_command_store(struct device *dev,
2454 struct device_attribute *attr,
2455 const char *buf, size_t count)
2457 unsigned long cmos_cmd;
2460 if (parse_strtoul(buf, 21, &cmos_cmd))
2463 res = issue_thinkpad_cmos_command(cmos_cmd);
2464 return (res)? res : count;
2467 static struct device_attribute dev_attr_cmos_command =
2468 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
2470 /* --------------------------------------------------------------------- */
2472 static int __init cmos_init(struct ibm_init_struct *iibm)
2476 vdbg_printk(TPACPI_DBG_INIT,
2477 "initializing cmos commands subdriver\n");
2479 IBM_ACPIHANDLE_INIT(cmos);
2481 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
2482 str_supported(cmos_handle != NULL));
2484 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
2488 return (cmos_handle)? 0 : 1;
2491 static void cmos_exit(void)
2493 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
2496 static int cmos_read(char *p)
2500 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2501 R30, R31, T20-22, X20-21 */
2503 len += sprintf(p + len, "status:\t\tnot supported\n");
2505 len += sprintf(p + len, "status:\t\tsupported\n");
2506 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
2512 static int cmos_write(char *buf)
2517 while ((cmd = next_cmd(&buf))) {
2518 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
2519 cmos_cmd >= 0 && cmos_cmd <= 21) {
2524 res = issue_thinkpad_cmos_command(cmos_cmd);
2532 static struct ibm_struct cmos_driver_data = {
2535 .write = cmos_write,
2539 /*************************************************************************
2543 static enum led_access_mode led_supported;
2545 IBM_HANDLE(led, ec, "SLED", /* 570 */
2546 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
2547 "LED", /* all others */
2550 static int __init led_init(struct ibm_init_struct *iibm)
2552 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
2554 IBM_ACPIHANDLE_INIT(led);
2557 /* led not supported on R30, R31 */
2558 led_supported = TPACPI_LED_NONE;
2559 else if (strlencmp(led_path, "SLED") == 0)
2561 led_supported = TPACPI_LED_570;
2562 else if (strlencmp(led_path, "SYSL") == 0)
2563 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
2564 led_supported = TPACPI_LED_OLD;
2567 led_supported = TPACPI_LED_NEW;
2569 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
2570 str_supported(led_supported), led_supported);
2572 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
2575 #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
2577 static int led_read(char *p)
2581 if (!led_supported) {
2582 len += sprintf(p + len, "status:\t\tnot supported\n");
2585 len += sprintf(p + len, "status:\t\tsupported\n");
2587 if (led_supported == TPACPI_LED_570) {
2590 for (i = 0; i < 8; i++) {
2591 if (!acpi_evalf(ec_handle,
2592 &status, "GLED", "dd", 1 << i))
2594 len += sprintf(p + len, "%d:\t\t%s\n",
2595 i, led_status(status));
2599 len += sprintf(p + len, "commands:\t"
2600 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
2605 /* off, on, blink */
2606 static const int led_sled_arg1[] = { 0, 1, 3 };
2607 static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */
2608 static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */
2609 static const int led_led_arg1[] = { 0, 0x80, 0xc0 };
2611 static int led_write(char *buf)
2619 while ((cmd = next_cmd(&buf))) {
2620 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
2623 if (strstr(cmd, "off")) {
2625 } else if (strstr(cmd, "on")) {
2627 } else if (strstr(cmd, "blink")) {
2632 if (led_supported == TPACPI_LED_570) {
2635 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
2636 led, led_sled_arg1[ind]))
2638 } else if (led_supported == TPACPI_LED_OLD) {
2639 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
2641 ret = ec_write(TPACPI_LED_EC_HLMS, led);
2644 ec_write(TPACPI_LED_EC_HLBL,
2645 led * led_exp_hlbl[ind]);
2648 ec_write(TPACPI_LED_EC_HLCL,
2649 led * led_exp_hlcl[ind]);
2654 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
2655 led, led_led_arg1[ind]))
2663 static struct ibm_struct led_driver_data = {
2669 /*************************************************************************
2673 IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
2675 static int __init beep_init(struct ibm_init_struct *iibm)
2677 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
2679 IBM_ACPIHANDLE_INIT(beep);
2681 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
2682 str_supported(beep_handle != NULL));
2684 return (beep_handle)? 0 : 1;
2687 static int beep_read(char *p)
2692 len += sprintf(p + len, "status:\t\tnot supported\n");
2694 len += sprintf(p + len, "status:\t\tsupported\n");
2695 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
2701 static int beep_write(char *buf)
2709 while ((cmd = next_cmd(&buf))) {
2710 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
2711 beep_cmd >= 0 && beep_cmd <= 17) {
2715 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
2722 static struct ibm_struct beep_driver_data = {
2725 .write = beep_write,
2728 /*************************************************************************
2732 static enum thermal_access_mode thermal_read_mode;
2734 /* sysfs temp##_input -------------------------------------------------- */
2736 static ssize_t thermal_temp_input_show(struct device *dev,
2737 struct device_attribute *attr,
2740 struct sensor_device_attribute *sensor_attr =
2741 to_sensor_dev_attr(attr);
2742 int idx = sensor_attr->index;
2746 res = thermal_get_sensor(idx, &value);
2749 if (value == TP_EC_THERMAL_TMP_NA * 1000)
2752 return snprintf(buf, PAGE_SIZE, "%d\n", value);
2755 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
2756 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, thermal_temp_input_show, NULL, _idxB)
2758 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
2759 THERMAL_SENSOR_ATTR_TEMP(1, 0),
2760 THERMAL_SENSOR_ATTR_TEMP(2, 1),
2761 THERMAL_SENSOR_ATTR_TEMP(3, 2),
2762 THERMAL_SENSOR_ATTR_TEMP(4, 3),
2763 THERMAL_SENSOR_ATTR_TEMP(5, 4),
2764 THERMAL_SENSOR_ATTR_TEMP(6, 5),
2765 THERMAL_SENSOR_ATTR_TEMP(7, 6),
2766 THERMAL_SENSOR_ATTR_TEMP(8, 7),
2767 THERMAL_SENSOR_ATTR_TEMP(9, 8),
2768 THERMAL_SENSOR_ATTR_TEMP(10, 9),
2769 THERMAL_SENSOR_ATTR_TEMP(11, 10),
2770 THERMAL_SENSOR_ATTR_TEMP(12, 11),
2771 THERMAL_SENSOR_ATTR_TEMP(13, 12),
2772 THERMAL_SENSOR_ATTR_TEMP(14, 13),
2773 THERMAL_SENSOR_ATTR_TEMP(15, 14),
2774 THERMAL_SENSOR_ATTR_TEMP(16, 15),
2777 #define THERMAL_ATTRS(X) \
2778 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
2780 static struct attribute *thermal_temp_input_attr[] = {
2800 static const struct attribute_group thermal_temp_input16_group = {
2801 .attrs = thermal_temp_input_attr
2804 static const struct attribute_group thermal_temp_input8_group = {
2805 .attrs = &thermal_temp_input_attr[8]
2808 #undef THERMAL_SENSOR_ATTR_TEMP
2809 #undef THERMAL_ATTRS
2811 /* --------------------------------------------------------------------- */
2813 static int __init thermal_init(struct ibm_init_struct *iibm)
2820 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
2822 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
2824 if (thinkpad_id.ec_model) {
2826 * Direct EC access mode: sensors at registers
2827 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
2828 * non-implemented, thermal sensors return 0x80 when
2833 for (i = 0; i < 8; i++) {
2834 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
2840 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
2848 /* This is sheer paranoia, but we handle it anyway */
2851 "ThinkPad ACPI EC access misbehaving, "
2852 "falling back to ACPI TMPx access mode\n");
2853 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
2856 "ThinkPad ACPI EC access misbehaving, "
2857 "disabling thermal sensors access\n");
2858 thermal_read_mode = TPACPI_THERMAL_NONE;
2863 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
2865 } else if (acpi_tmp7) {
2866 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
2867 /* 600e/x, 770e, 770x */
2868 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
2870 /* Standard ACPI TMPx access, max 8 sensors */
2871 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
2874 /* temperatures not supported on 570, G4x, R30, R31, R32 */
2875 thermal_read_mode = TPACPI_THERMAL_NONE;
2878 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
2879 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
2882 switch(thermal_read_mode) {
2883 case TPACPI_THERMAL_TPEC_16:
2884 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2885 &thermal_temp_input16_group);
2889 case TPACPI_THERMAL_TPEC_8:
2890 case TPACPI_THERMAL_ACPI_TMP07:
2891 case TPACPI_THERMAL_ACPI_UPDT:
2892 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2893 &thermal_temp_input8_group);
2897 case TPACPI_THERMAL_NONE:
2905 static void thermal_exit(void)
2907 switch(thermal_read_mode) {
2908 case TPACPI_THERMAL_TPEC_16:
2909 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2910 &thermal_temp_input16_group);
2912 case TPACPI_THERMAL_TPEC_8:
2913 case TPACPI_THERMAL_ACPI_TMP07:
2914 case TPACPI_THERMAL_ACPI_UPDT:
2915 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2916 &thermal_temp_input16_group);
2918 case TPACPI_THERMAL_NONE:
2924 /* idx is zero-based */
2925 static int thermal_get_sensor(int idx, s32 *value)
2931 t = TP_EC_THERMAL_TMP0;
2933 switch (thermal_read_mode) {
2934 #if TPACPI_MAX_THERMAL_SENSORS >= 16
2935 case TPACPI_THERMAL_TPEC_16:
2936 if (idx >= 8 && idx <= 15) {
2937 t = TP_EC_THERMAL_TMP8;
2942 case TPACPI_THERMAL_TPEC_8:
2944 if (!acpi_ec_read(t + idx, &tmp))
2946 *value = tmp * 1000;
2951 case TPACPI_THERMAL_ACPI_UPDT:
2953 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
2954 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
2956 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2958 *value = (t - 2732) * 100;
2963 case TPACPI_THERMAL_ACPI_TMP07:
2965 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
2966 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
2968 if (t > 127 || t < -127)
2969 t = TP_EC_THERMAL_TMP_NA;
2975 case TPACPI_THERMAL_NONE:
2983 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
2994 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
2997 for(i = 0 ; i < n; i++) {
2998 res = thermal_get_sensor(i, &s->temp[i]);
3006 static int thermal_read(char *p)
3010 struct ibm_thermal_sensors_struct t;
3012 n = thermal_get_sensors(&t);
3013 if (unlikely(n < 0))
3016 len += sprintf(p + len, "temperatures:\t");
3019 for (i = 0; i < (n - 1); i++)
3020 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
3021 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
3023 len += sprintf(p + len, "not supported\n");
3028 static struct ibm_struct thermal_driver_data = {
3030 .read = thermal_read,
3031 .exit = thermal_exit,
3034 /*************************************************************************
3038 static u8 ecdump_regs[256];
3040 static int ecdump_read(char *p)
3046 len += sprintf(p + len, "EC "
3047 " +00 +01 +02 +03 +04 +05 +06 +07"
3048 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
3049 for (i = 0; i < 256; i += 16) {
3050 len += sprintf(p + len, "EC 0x%02x:", i);
3051 for (j = 0; j < 16; j++) {
3052 if (!acpi_ec_read(i + j, &v))
3054 if (v != ecdump_regs[i + j])
3055 len += sprintf(p + len, " *%02x", v);
3057 len += sprintf(p + len, " %02x", v);
3058 ecdump_regs[i + j] = v;
3060 len += sprintf(p + len, "\n");
3065 /* These are way too dangerous to advertise openly... */
3067 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
3068 " (<offset> is 00-ff, <value> is 00-ff)\n");
3069 len += sprintf(p + len, "commands:\t0x<offset> <value> "
3070 " (<offset> is 00-ff, <value> is 0-255)\n");
3075 static int ecdump_write(char *buf)
3080 while ((cmd = next_cmd(&buf))) {
3081 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
3083 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
3087 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
3088 if (!acpi_ec_write(i, v))
3097 static struct ibm_struct ecdump_driver_data = {
3099 .read = ecdump_read,
3100 .write = ecdump_write,
3101 .flags.experimental = 1,
3104 /*************************************************************************
3105 * Backlight/brightness subdriver
3108 static struct backlight_device *ibm_backlight_device;
3110 static struct backlight_ops ibm_backlight_data = {
3111 .get_brightness = brightness_get,
3112 .update_status = brightness_update_status,
3115 static struct mutex brightness_mutex;
3117 static int __init tpacpi_query_bcll_levels(acpi_handle handle)
3119 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
3120 union acpi_object *obj;
3123 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
3124 obj = (union acpi_object *)buffer.pointer;
3125 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
3126 printk(IBM_ERR "Unknown BCLL data, "
3127 "please report this to %s\n", IBM_MAIL);
3130 rc = obj->package.count;
3136 kfree(buffer.pointer);
3140 static acpi_status __init brightness_find_bcll(acpi_handle handle, u32 lvl,
3141 void *context, void **rv)
3143 char name[ACPI_PATH_SEGMENT_LENGTH];
3144 struct acpi_buffer buffer = { sizeof(name), &name };
3146 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
3147 !strncmp("BCLL", name, sizeof(name) - 1)) {
3148 if (tpacpi_query_bcll_levels(handle) == 16) {
3150 return AE_CTRL_TERMINATE;
3159 static int __init brightness_check_levels(void)
3162 void *found_node = NULL;
3165 IBM_ACPIHANDLE_INIT(vid);
3170 /* Search for a BCLL package with 16 levels */
3171 status = acpi_walk_namespace(ACPI_TYPE_PACKAGE, vid_handle, 3,
3172 brightness_find_bcll, NULL, &found_node);
3174 return (ACPI_SUCCESS(status) && found_node != NULL);
3177 static acpi_status __init brightness_find_bcl(acpi_handle handle, u32 lvl,
3178 void *context, void **rv)
3180 char name[ACPI_PATH_SEGMENT_LENGTH];
3181 struct acpi_buffer buffer = { sizeof(name), &name };
3183 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
3184 !strncmp("_BCL", name, sizeof(name) - 1)) {
3186 return AE_CTRL_TERMINATE;
3192 static int __init brightness_check_std_acpi_support(void)
3195 void *found_node = NULL;
3198 IBM_ACPIHANDLE_INIT(vid);
3203 /* Search for a _BCL method, but don't execute it */
3204 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
3205 brightness_find_bcl, NULL, &found_node);
3207 return (ACPI_SUCCESS(status) && found_node != NULL);
3210 static int __init brightness_init(struct ibm_init_struct *iibm)
3214 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
3216 mutex_init(&brightness_mutex);
3218 if (!brightness_enable) {
3219 dbg_printk(TPACPI_DBG_INIT,
3220 "brightness support disabled by module parameter\n");
3222 } else if (brightness_enable > 1) {
3223 if (brightness_check_std_acpi_support()) {
3225 "standard ACPI backlight interface available, not loading native one...\n");
3230 if (!brightness_mode) {
3231 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
3232 brightness_mode = 2;
3234 brightness_mode = 3;
3236 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
3240 if (brightness_mode > 3)
3243 tp_features.bright_16levels =
3244 thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO &&
3245 brightness_check_levels();
3247 b = brightness_get(NULL);
3251 if (tp_features.bright_16levels)
3252 printk(IBM_INFO "detected a 16-level brightness capable ThinkPad\n");
3254 ibm_backlight_device = backlight_device_register(
3255 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
3256 &ibm_backlight_data);
3257 if (IS_ERR(ibm_backlight_device)) {
3258 printk(IBM_ERR "Could not register backlight device\n");
3259 return PTR_ERR(ibm_backlight_device);
3261 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
3263 ibm_backlight_device->props.max_brightness =
3264 (tp_features.bright_16levels)? 15 : 7;
3265 ibm_backlight_device->props.brightness = b;
3266 backlight_update_status(ibm_backlight_device);
3271 static void brightness_exit(void)
3273 if (ibm_backlight_device) {
3274 vdbg_printk(TPACPI_DBG_EXIT,
3275 "calling backlight_device_unregister()\n");
3276 backlight_device_unregister(ibm_backlight_device);
3277 ibm_backlight_device = NULL;
3281 static int brightness_update_status(struct backlight_device *bd)
3283 return brightness_set(
3284 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
3285 bd->props.power == FB_BLANK_UNBLANK) ?
3286 bd->props.brightness : 0);
3290 * ThinkPads can read brightness from two places: EC 0x31, or
3291 * CMOS NVRAM byte 0x5E, bits 0-3.
3293 static int brightness_get(struct backlight_device *bd)
3295 u8 lec = 0, lcmos = 0, level = 0;
3297 if (brightness_mode & 1) {
3298 if (!acpi_ec_read(brightness_offset, &lec))
3300 lec &= (tp_features.bright_16levels)? 0x0f : 0x07;
3303 if (brightness_mode & 2) {
3304 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
3305 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
3306 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
3307 lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07;
3311 if (brightness_mode == 3 && lec != lcmos) {
3313 "CMOS NVRAM (%u) and EC (%u) do not agree "
3314 "on display brightness level\n",
3315 (unsigned int) lcmos,
3316 (unsigned int) lec);
3323 static int brightness_set(int value)
3325 int cmos_cmd, inc, i, res;
3328 if (value > ((tp_features.bright_16levels)? 15 : 7))
3331 res = mutex_lock_interruptible(&brightness_mutex);
3335 current_value = brightness_get(NULL);
3336 if (current_value < 0) {
3337 res = current_value;
3341 cmos_cmd = value > current_value ?
3342 TP_CMOS_BRIGHTNESS_UP :
3343 TP_CMOS_BRIGHTNESS_DOWN;
3344 inc = (value > current_value)? 1 : -1;
3347 for (i = current_value; i != value; i += inc) {
3348 if ((brightness_mode & 2) &&
3349 issue_thinkpad_cmos_command(cmos_cmd)) {
3353 if ((brightness_mode & 1) &&
3354 !acpi_ec_write(brightness_offset, i + inc)) {
3361 mutex_unlock(&brightness_mutex);
3365 static int brightness_read(char *p)
3370 if ((level = brightness_get(NULL)) < 0) {
3371 len += sprintf(p + len, "level:\t\tunreadable\n");
3373 len += sprintf(p + len, "level:\t\t%d\n", level);
3374 len += sprintf(p + len, "commands:\tup, down\n");
3375 len += sprintf(p + len, "commands:\tlevel <level>"
3376 " (<level> is 0-%d)\n",
3377 (tp_features.bright_16levels) ? 15 : 7);
3383 static int brightness_write(char *buf)
3388 int max_level = (tp_features.bright_16levels) ? 15 : 7;
3390 while ((cmd = next_cmd(&buf))) {
3391 if ((level = brightness_get(NULL)) < 0)
3394 if (strlencmp(cmd, "up") == 0) {
3395 new_level = level == (max_level)?
3396 max_level : level + 1;
3397 } else if (strlencmp(cmd, "down") == 0) {
3398 new_level = level == 0? 0 : level - 1;
3399 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
3400 new_level >= 0 && new_level <= max_level) {
3405 brightness_set(new_level);
3411 static struct ibm_struct brightness_driver_data = {
3412 .name = "brightness",
3413 .read = brightness_read,
3414 .write = brightness_write,
3415 .exit = brightness_exit,
3418 /*************************************************************************
3422 static int volume_read(char *p)
3427 if (!acpi_ec_read(volume_offset, &level)) {
3428 len += sprintf(p + len, "level:\t\tunreadable\n");
3430 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
3431 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
3432 len += sprintf(p + len, "commands:\tup, down, mute\n");
3433 len += sprintf(p + len, "commands:\tlevel <level>"
3434 " (<level> is 0-15)\n");
3440 static int volume_write(char *buf)
3442 int cmos_cmd, inc, i;
3444 int new_level, new_mute;
3447 while ((cmd = next_cmd(&buf))) {
3448 if (!acpi_ec_read(volume_offset, &level))
3450 new_mute = mute = level & 0x40;
3451 new_level = level = level & 0xf;
3453 if (strlencmp(cmd, "up") == 0) {
3457 new_level = level == 15 ? 15 : level + 1;
3458 } else if (strlencmp(cmd, "down") == 0) {
3462 new_level = level == 0 ? 0 : level - 1;
3463 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
3464 new_level >= 0 && new_level <= 15) {
3466 } else if (strlencmp(cmd, "mute") == 0) {
3471 if (new_level != level) { /* mute doesn't change */
3472 cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
3473 inc = new_level > level ? 1 : -1;
3475 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
3476 !acpi_ec_write(volume_offset, level)))
3479 for (i = level; i != new_level; i += inc)
3480 if (issue_thinkpad_cmos_command(cmos_cmd) ||
3481 !acpi_ec_write(volume_offset, i + inc))
3484 if (mute && (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
3485 !acpi_ec_write(volume_offset,
3490 if (new_mute != mute) { /* level doesn't change */
3491 cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
3493 if (issue_thinkpad_cmos_command(cmos_cmd) ||
3494 !acpi_ec_write(volume_offset, level + new_mute))
3502 static struct ibm_struct volume_driver_data = {
3504 .read = volume_read,
3505 .write = volume_write,
3508 /*************************************************************************
3515 * TPACPI_FAN_RD_ACPI_GFAN:
3516 * ACPI GFAN method: returns fan level
3518 * see TPACPI_FAN_WR_ACPI_SFAN
3519 * EC 0x2f (HFSP) not available if GFAN exists
3521 * TPACPI_FAN_WR_ACPI_SFAN:
3522 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
3524 * EC 0x2f (HFSP) might be available *for reading*, but do not use
3527 * TPACPI_FAN_WR_TPEC:
3528 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
3529 * Supported on almost all ThinkPads
3531 * Fan speed changes of any sort (including those caused by the
3532 * disengaged mode) are usually done slowly by the firmware as the
3533 * maximum ammount of fan duty cycle change per second seems to be
3536 * Reading is not available if GFAN exists.
3537 * Writing is not available if SFAN exists.
3540 * 7 automatic mode engaged;
3541 * (default operation mode of the ThinkPad)
3542 * fan level is ignored in this mode.
3543 * 6 full speed mode (takes precedence over bit 7);
3544 * not available on all thinkpads. May disable
3545 * the tachometer while the fan controller ramps up
3546 * the speed (which can take up to a few *minutes*).
3547 * Speeds up fan to 100% duty-cycle, which is far above
3548 * the standard RPM levels. It is not impossible that
3549 * it could cause hardware damage.
3550 * 5-3 unused in some models. Extra bits for fan level
3551 * in others, but still useless as all values above
3552 * 7 map to the same speed as level 7 in these models.
3553 * 2-0 fan level (0..7 usually)
3555 * 0x07 = max (set when temperatures critical)
3556 * Some ThinkPads may have other levels, see
3557 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
3559 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
3560 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
3561 * does so, its initial value is meaningless (0x07).
3563 * For firmware bugs, refer to:
3564 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3568 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
3569 * Main fan tachometer reading (in RPM)
3571 * This register is present on all ThinkPads with a new-style EC, and
3572 * it is known not to be present on the A21m/e, and T22, as there is
3573 * something else in offset 0x84 according to the ACPI DSDT. Other
3574 * ThinkPads from this same time period (and earlier) probably lack the
3575 * tachometer as well.
3577 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
3578 * was never fixed by IBM to report the EC firmware version string
3579 * probably support the tachometer (like the early X models), so
3580 * detecting it is quite hard. We need more data to know for sure.
3582 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
3585 * FIRMWARE BUG: may go stale while the EC is switching to full speed
3588 * For firmware bugs, refer to:
3589 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3591 * TPACPI_FAN_WR_ACPI_FANS:
3592 * ThinkPad X31, X40, X41. Not available in the X60.
3594 * FANS ACPI handle: takes three arguments: low speed, medium speed,
3595 * high speed. ACPI DSDT seems to map these three speeds to levels
3596 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
3597 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
3599 * The speeds are stored on handles
3600 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
3602 * There are three default speed sets, acessible as handles:
3603 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
3605 * ACPI DSDT switches which set is in use depending on various
3608 * TPACPI_FAN_WR_TPEC is also available and should be used to
3609 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
3610 * but the ACPI tables just mention level 7.
3613 static enum fan_status_access_mode fan_status_access_mode;
3614 static enum fan_control_access_mode fan_control_access_mode;
3615 static enum fan_control_commands fan_control_commands;
3617 static u8 fan_control_initial_status;
3618 static u8 fan_control_desired_level;
3620 static void fan_watchdog_fire(struct work_struct *ignored);
3621 static int fan_watchdog_maxinterval;
3622 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
3624 IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
3625 IBM_HANDLE(gfan, ec, "GFAN", /* 570 */
3626 "\\FSPD", /* 600e/x, 770e, 770x */
3628 IBM_HANDLE(sfan, ec, "SFAN", /* 570 */
3629 "JFNS", /* 770x-JL */
3633 * SYSFS fan layout: hwmon compatible (device)
3636 * 0: "disengaged" mode
3638 * 2: native EC "auto" mode (recommended, hardware default)
3640 * pwm*: set speed in manual mode, ignored otherwise.
3641 * 0 is level 0; 255 is level 7. Intermediate points done with linear
3644 * fan*_input: tachometer reading, RPM
3647 * SYSFS fan layout: extensions
3649 * fan_watchdog (driver):
3650 * fan watchdog interval in seconds, 0 disables (default), max 120
3653 /* sysfs fan pwm1_enable ----------------------------------------------- */
3654 static ssize_t fan_pwm1_enable_show(struct device *dev,
3655 struct device_attribute *attr,
3661 res = fan_get_status_safe(&status);
3665 if (unlikely(tp_features.fan_ctrl_status_undef)) {
3666 if (status != fan_control_initial_status) {
3667 tp_features.fan_ctrl_status_undef = 0;
3669 /* Return most likely status. In fact, it
3670 * might be the only possible status */
3671 status = TP_EC_FAN_AUTO;
3675 if (status & TP_EC_FAN_FULLSPEED) {
3677 } else if (status & TP_EC_FAN_AUTO) {
3682 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
3685 static ssize_t fan_pwm1_enable_store(struct device *dev,
3686 struct device_attribute *attr,
3687 const char *buf, size_t count)
3692 if (parse_strtoul(buf, 2, &t))
3697 level = TP_EC_FAN_FULLSPEED;
3700 level = TPACPI_FAN_LAST_LEVEL;
3703 level = TP_EC_FAN_AUTO;
3706 /* reserved for software-controlled auto mode */
3712 res = fan_set_level_safe(level);
3718 fan_watchdog_reset();
3723 static struct device_attribute dev_attr_fan_pwm1_enable =
3724 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
3725 fan_pwm1_enable_show, fan_pwm1_enable_store);
3727 /* sysfs fan pwm1 ------------------------------------------------------ */
3728 static ssize_t fan_pwm1_show(struct device *dev,
3729 struct device_attribute *attr,
3735 res = fan_get_status_safe(&status);
3739 if (unlikely(tp_features.fan_ctrl_status_undef)) {
3740 if (status != fan_control_initial_status) {
3741 tp_features.fan_ctrl_status_undef = 0;
3743 status = TP_EC_FAN_AUTO;
3748 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
3749 status = fan_control_desired_level;
3754 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
3757 static ssize_t fan_pwm1_store(struct device *dev,
3758 struct device_attribute *attr,
3759 const char *buf, size_t count)
3763 u8 status, newlevel;
3765 if (parse_strtoul(buf, 255, &s))
3768 /* scale down from 0-255 to 0-7 */
3769 newlevel = (s >> 5) & 0x07;
3771 rc = mutex_lock_interruptible(&fan_mutex);
3775 rc = fan_get_status(&status);
3776 if (!rc && (status &
3777 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3778 rc = fan_set_level(newlevel);
3782 fan_update_desired_level(newlevel);
3783 fan_watchdog_reset();
3787 mutex_unlock(&fan_mutex);
3788 return (rc)? rc : count;
3791 static struct device_attribute dev_attr_fan_pwm1 =
3792 __ATTR(pwm1, S_IWUSR | S_IRUGO,
3793 fan_pwm1_show, fan_pwm1_store);
3795 /* sysfs fan fan1_input ------------------------------------------------ */
3796 static ssize_t fan_fan1_input_show(struct device *dev,
3797 struct device_attribute *attr,
3803 res = fan_get_speed(&speed);
3807 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
3810 static struct device_attribute dev_attr_fan_fan1_input =
3811 __ATTR(fan1_input, S_IRUGO,
3812 fan_fan1_input_show, NULL);
3814 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
3815 static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
3818 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
3821 static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
3822 const char *buf, size_t count)
3826 if (parse_strtoul(buf, 120, &t))
3829 if (!fan_control_allowed)
3832 fan_watchdog_maxinterval = t;
3833 fan_watchdog_reset();
3838 static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
3839 fan_fan_watchdog_show, fan_fan_watchdog_store);
3841 /* --------------------------------------------------------------------- */
3842 static struct attribute *fan_attributes[] = {
3843 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
3844 &dev_attr_fan_fan1_input.attr,
3848 static const struct attribute_group fan_attr_group = {
3849 .attrs = fan_attributes,
3852 static int __init fan_init(struct ibm_init_struct *iibm)
3856 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
3858 mutex_init(&fan_mutex);
3859 fan_status_access_mode = TPACPI_FAN_NONE;
3860 fan_control_access_mode = TPACPI_FAN_WR_NONE;
3861 fan_control_commands = 0;
3862 fan_watchdog_maxinterval = 0;
3863 tp_features.fan_ctrl_status_undef = 0;
3864 fan_control_desired_level = 7;
3866 IBM_ACPIHANDLE_INIT(fans);
3867 IBM_ACPIHANDLE_INIT(gfan);
3868 IBM_ACPIHANDLE_INIT(sfan);
3871 /* 570, 600e/x, 770e, 770x */
3872 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
3874 /* all other ThinkPads: note that even old-style
3875 * ThinkPad ECs supports the fan control register */
3876 if (likely(acpi_ec_read(fan_status_offset,
3877 &fan_control_initial_status))) {
3878 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
3880 /* In some ThinkPads, neither the EC nor the ACPI
3881 * DSDT initialize the fan status, and it ends up
3882 * being set to 0x07 when it *could* be either
3885 * Enable for TP-1Y (T43), TP-78 (R51e),
3886 * TP-76 (R52), TP-70 (T43, R52), which are known
3888 if (fan_control_initial_status == 0x07) {
3889 switch (thinkpad_id.ec_model) {
3890 case 0x5931: /* TP-1Y */
3891 case 0x3837: /* TP-78 */
3892 case 0x3637: /* TP-76 */
3893 case 0x3037: /* TP-70 */
3895 "fan_init: initial fan status is "
3896 "unknown, assuming it is in auto "
3898 tp_features.fan_ctrl_status_undef = 1;
3904 "ThinkPad ACPI EC access misbehaving, "
3905 "fan status and control unavailable\n");
3912 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
3913 fan_control_commands |=
3914 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
3917 /* gfan without sfan means no fan control */
3918 /* all other models implement TP EC 0x2f control */
3922 fan_control_access_mode =
3923 TPACPI_FAN_WR_ACPI_FANS;
3924 fan_control_commands |=
3925 TPACPI_FAN_CMD_SPEED |
3926 TPACPI_FAN_CMD_LEVEL |
3927 TPACPI_FAN_CMD_ENABLE;
3929 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
3930 fan_control_commands |=
3931 TPACPI_FAN_CMD_LEVEL |
3932 TPACPI_FAN_CMD_ENABLE;
3937 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
3938 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
3939 fan_control_access_mode != TPACPI_FAN_WR_NONE),
3940 fan_status_access_mode, fan_control_access_mode);
3942 /* fan control master switch */
3943 if (!fan_control_allowed) {
3944 fan_control_access_mode = TPACPI_FAN_WR_NONE;
3945 fan_control_commands = 0;
3946 dbg_printk(TPACPI_DBG_INIT,
3947 "fan control features disabled by parameter\n");
3950 /* update fan_control_desired_level */
3951 if (fan_status_access_mode != TPACPI_FAN_NONE)
3952 fan_get_status_safe(NULL);
3954 if (fan_status_access_mode != TPACPI_FAN_NONE ||
3955 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
3956 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
3959 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
3960 &driver_attr_fan_watchdog);
3969 * Call with fan_mutex held
3971 static void fan_update_desired_level(u8 status)
3974 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
3976 fan_control_desired_level = 7;
3978 fan_control_desired_level = status;
3982 static int fan_get_status(u8 *status)
3987 * Add TPACPI_FAN_RD_ACPI_FANS ? */
3989 switch (fan_status_access_mode) {
3990 case TPACPI_FAN_RD_ACPI_GFAN:
3991 /* 570, 600e/x, 770e, 770x */
3993 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
4001 case TPACPI_FAN_RD_TPEC:
4002 /* all except 570, 600e/x, 770e, 770x */
4003 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
4018 static int fan_get_status_safe(u8 *status)
4023 rc = mutex_lock_interruptible(&fan_mutex);
4026 rc = fan_get_status(&s);
4028 fan_update_desired_level(s);
4029 mutex_unlock(&fan_mutex);
4037 static void fan_exit(void)
4039 vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending fan watchdog tasks\n");
4041 /* FIXME: can we really do this unconditionally? */
4042 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
4043 driver_remove_file(&tpacpi_hwmon_pdriver.driver, &driver_attr_fan_watchdog);
4045 cancel_delayed_work(&fan_watchdog_task);
4046 flush_scheduled_work();
4049 static int fan_get_speed(unsigned int *speed)
4053 switch (fan_status_access_mode) {
4054 case TPACPI_FAN_RD_TPEC:
4055 /* all except 570, 600e/x, 770e, 770x */
4056 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
4057 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
4061 *speed = (hi << 8) | lo;
4072 static void fan_watchdog_fire(struct work_struct *ignored)
4076 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
4079 printk(IBM_NOTICE "fan watchdog: enabling fan\n");
4080 rc = fan_set_enable();
4082 printk(IBM_ERR "fan watchdog: error %d while enabling fan, "
4083 "will try again later...\n", -rc);
4084 /* reschedule for later */
4085 fan_watchdog_reset();
4089 static void fan_watchdog_reset(void)
4091 static int fan_watchdog_active;
4093 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
4096 if (fan_watchdog_active)
4097 cancel_delayed_work(&fan_watchdog_task);
4099 if (fan_watchdog_maxinterval > 0 &&
4100 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
4101 fan_watchdog_active = 1;
4102 if (!schedule_delayed_work(&fan_watchdog_task,
4103 msecs_to_jiffies(fan_watchdog_maxinterval
4105 printk(IBM_ERR "failed to schedule the fan watchdog, "
4106 "watchdog will not trigger\n");
4109 fan_watchdog_active = 0;
4112 static int fan_set_level(int level)
4114 if (!fan_control_allowed)
4117 switch (fan_control_access_mode) {
4118 case TPACPI_FAN_WR_ACPI_SFAN:
4119 if (level >= 0 && level <= 7) {
4120 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
4126 case TPACPI_FAN_WR_ACPI_FANS:
4127 case TPACPI_FAN_WR_TPEC:
4128 if ((level != TP_EC_FAN_AUTO) &&
4129 (level != TP_EC_FAN_FULLSPEED) &&
4130 ((level < 0) || (level > 7)))
4133 /* safety net should the EC not support AUTO
4134 * or FULLSPEED mode bits and just ignore them */
4135 if (level & TP_EC_FAN_FULLSPEED)
4136 level |= 7; /* safety min speed 7 */
4137 else if (level & TP_EC_FAN_FULLSPEED)
4138 level |= 4; /* safety min speed 4 */
4140 if (!acpi_ec_write(fan_status_offset, level))
4143 tp_features.fan_ctrl_status_undef = 0;
4152 static int fan_set_level_safe(int level)
4156 if (!fan_control_allowed)
4159 rc = mutex_lock_interruptible(&fan_mutex);
4163 if (level == TPACPI_FAN_LAST_LEVEL)
4164 level = fan_control_desired_level;
4166 rc = fan_set_level(level);
4168 fan_update_desired_level(level);
4170 mutex_unlock(&fan_mutex);
4174 static int fan_set_enable(void)
4179 if (!fan_control_allowed)
4182 rc = mutex_lock_interruptible(&fan_mutex);
4186 switch (fan_control_access_mode) {
4187 case TPACPI_FAN_WR_ACPI_FANS:
4188 case TPACPI_FAN_WR_TPEC:
4189 rc = fan_get_status(&s);
4193 /* Don't go out of emergency fan mode */
4196 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
4199 if (!acpi_ec_write(fan_status_offset, s))
4202 tp_features.fan_ctrl_status_undef = 0;
4207 case TPACPI_FAN_WR_ACPI_SFAN:
4208 rc = fan_get_status(&s);
4214 /* Set fan to at least level 4 */
4217 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
4227 mutex_unlock(&fan_mutex);
4231 static int fan_set_disable(void)
4235 if (!fan_control_allowed)
4238 rc = mutex_lock_interruptible(&fan_mutex);
4243 switch (fan_control_access_mode) {
4244 case TPACPI_FAN_WR_ACPI_FANS:
4245 case TPACPI_FAN_WR_TPEC:
4246 if (!acpi_ec_write(fan_status_offset, 0x00))
4249 fan_control_desired_level = 0;
4250 tp_features.fan_ctrl_status_undef = 0;
4254 case TPACPI_FAN_WR_ACPI_SFAN:
4255 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
4258 fan_control_desired_level = 0;
4266 mutex_unlock(&fan_mutex);
4270 static int fan_set_speed(int speed)
4274 if (!fan_control_allowed)
4277 rc = mutex_lock_interruptible(&fan_mutex);
4282 switch (fan_control_access_mode) {
4283 case TPACPI_FAN_WR_ACPI_FANS:
4284 if (speed >= 0 && speed <= 65535) {
4285 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
4286 speed, speed, speed))
4296 mutex_unlock(&fan_mutex);
4300 static int fan_read(char *p)
4305 unsigned int speed = 0;
4307 switch (fan_status_access_mode) {
4308 case TPACPI_FAN_RD_ACPI_GFAN:
4309 /* 570, 600e/x, 770e, 770x */
4310 if ((rc = fan_get_status_safe(&status)) < 0)
4313 len += sprintf(p + len, "status:\t\t%s\n"
4315 (status != 0) ? "enabled" : "disabled", status);
4318 case TPACPI_FAN_RD_TPEC:
4319 /* all except 570, 600e/x, 770e, 770x */
4320 if ((rc = fan_get_status_safe(&status)) < 0)
4323 if (unlikely(tp_features.fan_ctrl_status_undef)) {
4324 if (status != fan_control_initial_status)
4325 tp_features.fan_ctrl_status_undef = 0;
4327 /* Return most likely status. In fact, it
4328 * might be the only possible status */
4329 status = TP_EC_FAN_AUTO;
4332 len += sprintf(p + len, "status:\t\t%s\n",
4333 (status != 0) ? "enabled" : "disabled");
4335 if ((rc = fan_get_speed(&speed)) < 0)
4338 len += sprintf(p + len, "speed:\t\t%d\n", speed);
4340 if (status & TP_EC_FAN_FULLSPEED)
4341 /* Disengaged mode takes precedence */
4342 len += sprintf(p + len, "level:\t\tdisengaged\n");
4343 else if (status & TP_EC_FAN_AUTO)
4344 len += sprintf(p + len, "level:\t\tauto\n");
4346 len += sprintf(p + len, "level:\t\t%d\n", status);
4349 case TPACPI_FAN_NONE:
4351 len += sprintf(p + len, "status:\t\tnot supported\n");
4354 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
4355 len += sprintf(p + len, "commands:\tlevel <level>");
4357 switch (fan_control_access_mode) {
4358 case TPACPI_FAN_WR_ACPI_SFAN:
4359 len += sprintf(p + len, " (<level> is 0-7)\n");
4363 len += sprintf(p + len, " (<level> is 0-7, "
4364 "auto, disengaged, full-speed)\n");
4369 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
4370 len += sprintf(p + len, "commands:\tenable, disable\n"
4371 "commands:\twatchdog <timeout> (<timeout> is 0 (off), "
4372 "1-120 (seconds))\n");
4374 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
4375 len += sprintf(p + len, "commands:\tspeed <speed>"
4376 " (<speed> is 0-65535)\n");
4381 static int fan_write_cmd_level(const char *cmd, int *rc)
4385 if (strlencmp(cmd, "level auto") == 0)
4386 level = TP_EC_FAN_AUTO;
4387 else if ((strlencmp(cmd, "level disengaged") == 0) |
4388 (strlencmp(cmd, "level full-speed") == 0))
4389 level = TP_EC_FAN_FULLSPEED;
4390 else if (sscanf(cmd, "level %d", &level) != 1)
4393 if ((*rc = fan_set_level_safe(level)) == -ENXIO)
4394 printk(IBM_ERR "level command accepted for unsupported "
4395 "access mode %d", fan_control_access_mode);
4400 static int fan_write_cmd_enable(const char *cmd, int *rc)
4402 if (strlencmp(cmd, "enable") != 0)
4405 if ((*rc = fan_set_enable()) == -ENXIO)
4406 printk(IBM_ERR "enable command accepted for unsupported "
4407 "access mode %d", fan_control_access_mode);
4412 static int fan_write_cmd_disable(const char *cmd, int *rc)
4414 if (strlencmp(cmd, "disable") != 0)
4417 if ((*rc = fan_set_disable()) == -ENXIO)
4418 printk(IBM_ERR "disable command accepted for unsupported "
4419 "access mode %d", fan_control_access_mode);
4424 static int fan_write_cmd_speed(const char *cmd, int *rc)
4429 * Support speed <low> <medium> <high> ? */
4431 if (sscanf(cmd, "speed %d", &speed) != 1)
4434 if ((*rc = fan_set_speed(speed)) == -ENXIO)
4435 printk(IBM_ERR "speed command accepted for unsupported "
4436 "access mode %d", fan_control_access_mode);
4441 static int fan_write_cmd_watchdog(const char *cmd, int *rc)
4445 if (sscanf(cmd, "watchdog %d", &interval) != 1)
4448 if (interval < 0 || interval > 120)
4451 fan_watchdog_maxinterval = interval;
4456 static int fan_write(char *buf)
4461 while (!rc && (cmd = next_cmd(&buf))) {
4462 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
4463 fan_write_cmd_level(cmd, &rc)) &&
4464 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
4465 (fan_write_cmd_enable(cmd, &rc) ||
4466 fan_write_cmd_disable(cmd, &rc) ||
4467 fan_write_cmd_watchdog(cmd, &rc))) &&
4468 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
4469 fan_write_cmd_speed(cmd, &rc))
4473 fan_watchdog_reset();
4479 static struct ibm_struct fan_driver_data = {
4486 /****************************************************************************
4487 ****************************************************************************
4491 ****************************************************************************
4492 ****************************************************************************/
4494 /* sysfs name ---------------------------------------------------------- */
4495 static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
4496 struct device_attribute *attr,
4499 return snprintf(buf, PAGE_SIZE, "%s\n", IBM_NAME);
4502 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
4503 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
4505 /* --------------------------------------------------------------------- */
4508 static struct proc_dir_entry *proc_dir;
4510 /* Subdriver registry */
4511 static LIST_HEAD(tpacpi_all_drivers);
4515 * Module and infrastructure proble, init and exit handling
4518 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
4519 static const char * __init str_supported(int is_supported)
4521 static char text_unsupported[] __initdata = "not supported";
4523 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
4525 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
4527 static int __init ibm_init(struct ibm_init_struct *iibm)
4530 struct ibm_struct *ibm = iibm->data;
4531 struct proc_dir_entry *entry;
4533 BUG_ON(ibm == NULL);
4535 INIT_LIST_HEAD(&ibm->all_drivers);
4537 if (ibm->flags.experimental && !experimental)
4540 dbg_printk(TPACPI_DBG_INIT,
4541 "probing for %s\n", ibm->name);
4544 ret = iibm->init(iibm);
4546 return 0; /* probe failed */
4550 ibm->flags.init_called = 1;
4554 if (ibm->acpi->hid) {
4555 ret = register_tpacpi_subdriver(ibm);
4560 if (ibm->acpi->notify) {
4561 ret = setup_acpi_notify(ibm);
4562 if (ret == -ENODEV) {
4563 printk(IBM_NOTICE "disabling subdriver %s\n",
4573 dbg_printk(TPACPI_DBG_INIT,
4574 "%s installed\n", ibm->name);
4577 entry = create_proc_entry(ibm->name,
4578 S_IFREG | S_IRUGO | S_IWUSR,
4581 printk(IBM_ERR "unable to create proc entry %s\n",
4586 entry->owner = THIS_MODULE;
4588 entry->read_proc = &dispatch_procfs_read;
4590 entry->write_proc = &dispatch_procfs_write;
4591 ibm->flags.proc_created = 1;
4594 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
4599 dbg_printk(TPACPI_DBG_INIT,
4600 "%s: at error exit path with result %d\n",
4604 return (ret < 0)? ret : 0;
4607 static void ibm_exit(struct ibm_struct *ibm)
4609 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
4611 list_del_init(&ibm->all_drivers);
4613 if (ibm->flags.acpi_notify_installed) {
4614 dbg_printk(TPACPI_DBG_EXIT,
4615 "%s: acpi_remove_notify_handler\n", ibm->name);
4617 acpi_remove_notify_handler(*ibm->acpi->handle,
4619 dispatch_acpi_notify);
4620 ibm->flags.acpi_notify_installed = 0;
4621 ibm->flags.acpi_notify_installed = 0;
4624 if (ibm->flags.proc_created) {
4625 dbg_printk(TPACPI_DBG_EXIT,
4626 "%s: remove_proc_entry\n", ibm->name);
4627 remove_proc_entry(ibm->name, proc_dir);
4628 ibm->flags.proc_created = 0;
4631 if (ibm->flags.acpi_driver_registered) {
4632 dbg_printk(TPACPI_DBG_EXIT,
4633 "%s: acpi_bus_unregister_driver\n", ibm->name);
4635 acpi_bus_unregister_driver(ibm->acpi->driver);
4636 kfree(ibm->acpi->driver);
4637 ibm->acpi->driver = NULL;
4638 ibm->flags.acpi_driver_registered = 0;
4641 if (ibm->flags.init_called && ibm->exit) {
4643 ibm->flags.init_called = 0;
4646 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
4651 static void __init get_thinkpad_model_data(struct thinkpad_id_data *tp)
4653 const struct dmi_device *dev = NULL;
4654 char ec_fw_string[18];
4659 memset(tp, 0, sizeof(*tp));
4661 if (dmi_name_in_vendors("IBM"))
4662 tp->vendor = PCI_VENDOR_ID_IBM;
4663 else if (dmi_name_in_vendors("LENOVO"))
4664 tp->vendor = PCI_VENDOR_ID_LENOVO;
4668 tp->bios_version_str = kstrdup(dmi_get_system_info(DMI_BIOS_VERSION),
4670 if (!tp->bios_version_str)
4672 tp->bios_model = tp->bios_version_str[0]
4673 | (tp->bios_version_str[1] << 8);
4676 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
4677 * X32 or newer, all Z series; Some models must have an
4678 * up-to-date BIOS or they will not be detected.
4680 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
4682 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
4683 if (sscanf(dev->name,
4684 "IBM ThinkPad Embedded Controller -[%17c",
4685 ec_fw_string) == 1) {
4686 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
4687 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
4689 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
4690 tp->ec_model = ec_fw_string[0]
4691 | (ec_fw_string[1] << 8);
4696 tp->model_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_VERSION),
4698 if (strnicmp(tp->model_str, "ThinkPad", 8) != 0) {
4699 kfree(tp->model_str);
4700 tp->model_str = NULL;
4704 static int __init probe_for_thinkpad(void)
4712 * Non-ancient models have better DMI tagging, but very old models
4715 is_thinkpad = (thinkpad_id.model_str != NULL);
4717 /* ec is required because many other handles are relative to it */
4718 IBM_ACPIHANDLE_INIT(ec);
4722 "Not yet supported ThinkPad detected!\n");
4727 * Risks a regression on very old machines, but reduces potential
4728 * false positives a damn great deal
4731 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
4733 if (!is_thinkpad && !force_load)
4740 /* Module init, exit, parameters */
4742 static struct ibm_init_struct ibms_init[] __initdata = {
4744 .init = thinkpad_acpi_driver_init,
4745 .data = &thinkpad_acpi_driver_data,
4748 .init = hotkey_init,
4749 .data = &hotkey_driver_data,
4752 .init = bluetooth_init,
4753 .data = &bluetooth_driver_data,
4757 .data = &wan_driver_data,
4761 .data = &video_driver_data,
4765 .data = &light_driver_data,
4767 #ifdef CONFIG_THINKPAD_ACPI_DOCK
4770 .data = &dock_driver_data[0],
4774 .data = &dock_driver_data[1],
4777 #ifdef CONFIG_THINKPAD_ACPI_BAY
4780 .data = &bay_driver_data,
4785 .data = &cmos_driver_data,
4789 .data = &led_driver_data,
4793 .data = &beep_driver_data,
4796 .init = thermal_init,
4797 .data = &thermal_driver_data,
4800 .data = &ecdump_driver_data,
4803 .init = brightness_init,
4804 .data = &brightness_driver_data,
4807 .data = &volume_driver_data,
4811 .data = &fan_driver_data,
4815 static int __init set_ibm_param(const char *val, struct kernel_param *kp)
4818 struct ibm_struct *ibm;
4820 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4821 ibm = ibms_init[i].data;
4822 BUG_ON(ibm == NULL);
4824 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
4825 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
4827 strcpy(ibms_init[i].param, val);
4828 strcat(ibms_init[i].param, ",");
4836 static int experimental;
4837 module_param(experimental, int, 0);
4839 static u32 dbg_level;
4840 module_param_named(debug, dbg_level, uint, 0);
4842 static int force_load;
4843 module_param(force_load, bool, 0);
4845 static int fan_control_allowed;
4846 module_param_named(fan_control, fan_control_allowed, bool, 0);
4848 static int brightness_mode;
4849 module_param_named(brightness_mode, brightness_mode, int, 0);
4851 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
4852 module_param(brightness_enable, uint, 0);
4854 static unsigned int hotkey_report_mode;
4855 module_param(hotkey_report_mode, uint, 0);
4857 #define IBM_PARAM(feature) \
4858 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
4861 IBM_PARAM(bluetooth);
4864 #ifdef CONFIG_THINKPAD_ACPI_DOCK
4867 #ifdef CONFIG_THINKPAD_ACPI_BAY
4869 #endif /* CONFIG_THINKPAD_ACPI_BAY */
4874 IBM_PARAM(brightness);
4878 static int __init thinkpad_acpi_module_init(void)
4882 tpacpi_lifecycle = TPACPI_LIFE_INIT;
4884 /* Parameter checking */
4885 if (hotkey_report_mode > 2)
4888 /* Driver-level probe */
4890 get_thinkpad_model_data(&thinkpad_id);
4891 ret = probe_for_thinkpad();
4893 thinkpad_acpi_module_exit();
4897 /* Driver initialization */
4899 IBM_ACPIHANDLE_INIT(ecrd);
4900 IBM_ACPIHANDLE_INIT(ecwr);
4902 proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir);
4904 printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR);
4905 thinkpad_acpi_module_exit();
4908 proc_dir->owner = THIS_MODULE;
4910 ret = platform_driver_register(&tpacpi_pdriver);
4912 printk(IBM_ERR "unable to register main platform driver\n");
4913 thinkpad_acpi_module_exit();
4916 tp_features.platform_drv_registered = 1;
4918 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
4920 printk(IBM_ERR "unable to register hwmon platform driver\n");
4921 thinkpad_acpi_module_exit();
4924 tp_features.sensors_pdrv_registered = 1;
4926 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
4928 tp_features.platform_drv_attrs_registered = 1;
4929 ret = tpacpi_create_driver_attributes(&tpacpi_hwmon_pdriver.driver);
4932 printk(IBM_ERR "unable to create sysfs driver attributes\n");
4933 thinkpad_acpi_module_exit();
4936 tp_features.sensors_pdrv_attrs_registered = 1;
4939 /* Device initialization */
4940 tpacpi_pdev = platform_device_register_simple(IBM_DRVR_NAME, -1,
4942 if (IS_ERR(tpacpi_pdev)) {
4943 ret = PTR_ERR(tpacpi_pdev);
4945 printk(IBM_ERR "unable to register platform device\n");
4946 thinkpad_acpi_module_exit();
4949 tpacpi_sensors_pdev = platform_device_register_simple(
4950 IBM_HWMON_DRVR_NAME,
4952 if (IS_ERR(tpacpi_sensors_pdev)) {
4953 ret = PTR_ERR(tpacpi_sensors_pdev);
4954 tpacpi_sensors_pdev = NULL;
4955 printk(IBM_ERR "unable to register hwmon platform device\n");
4956 thinkpad_acpi_module_exit();
4959 ret = device_create_file(&tpacpi_sensors_pdev->dev,
4960 &dev_attr_thinkpad_acpi_pdev_name);
4963 "unable to create sysfs hwmon device attributes\n");
4964 thinkpad_acpi_module_exit();
4967 tp_features.sensors_pdev_attrs_registered = 1;
4968 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
4969 if (IS_ERR(tpacpi_hwmon)) {
4970 ret = PTR_ERR(tpacpi_hwmon);
4971 tpacpi_hwmon = NULL;
4972 printk(IBM_ERR "unable to register hwmon device\n");
4973 thinkpad_acpi_module_exit();
4976 mutex_init(&tpacpi_inputdev_send_mutex);
4977 tpacpi_inputdev = input_allocate_device();
4978 if (!tpacpi_inputdev) {
4979 printk(IBM_ERR "unable to allocate input device\n");
4980 thinkpad_acpi_module_exit();
4983 /* Prepare input device, but don't register */
4984 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
4985 tpacpi_inputdev->phys = IBM_DRVR_NAME "/input0";
4986 tpacpi_inputdev->id.bustype = BUS_HOST;
4987 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
4988 thinkpad_id.vendor :
4990 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
4991 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
4993 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
4994 ret = ibm_init(&ibms_init[i]);
4995 if (ret >= 0 && *ibms_init[i].param)
4996 ret = ibms_init[i].data->write(ibms_init[i].param);
4998 thinkpad_acpi_module_exit();
5002 ret = input_register_device(tpacpi_inputdev);
5004 printk(IBM_ERR "unable to register input device\n");
5005 thinkpad_acpi_module_exit();
5008 tp_features.input_device_registered = 1;
5011 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
5015 static void thinkpad_acpi_module_exit(void)
5017 struct ibm_struct *ibm, *itmp;
5019 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
5021 list_for_each_entry_safe_reverse(ibm, itmp,
5022 &tpacpi_all_drivers,
5027 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
5029 if (tpacpi_inputdev) {
5030 if (tp_features.input_device_registered)
5031 input_unregister_device(tpacpi_inputdev);
5033 input_free_device(tpacpi_inputdev);
5037 hwmon_device_unregister(tpacpi_hwmon);
5039 if (tp_features.sensors_pdev_attrs_registered)
5040 device_remove_file(&tpacpi_sensors_pdev->dev,
5041 &dev_attr_thinkpad_acpi_pdev_name);
5042 if (tpacpi_sensors_pdev)
5043 platform_device_unregister(tpacpi_sensors_pdev);
5045 platform_device_unregister(tpacpi_pdev);
5047 if (tp_features.sensors_pdrv_attrs_registered)
5048 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
5049 if (tp_features.platform_drv_attrs_registered)
5050 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
5052 if (tp_features.sensors_pdrv_registered)
5053 platform_driver_unregister(&tpacpi_hwmon_pdriver);
5055 if (tp_features.platform_drv_registered)
5056 platform_driver_unregister(&tpacpi_pdriver);
5059 remove_proc_entry(IBM_PROC_DIR, acpi_root_dir);
5061 kfree(thinkpad_id.bios_version_str);
5062 kfree(thinkpad_id.ec_version_str);
5063 kfree(thinkpad_id.model_str);
5066 module_init(thinkpad_acpi_module_init);
5067 module_exit(thinkpad_acpi_module_exit);