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 "0.15"
25 #define TPACPI_SYSFS_VERSION 0x010000
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))
120 /****************************************************************************
121 ****************************************************************************
123 * ACPI Helpers and device model
125 ****************************************************************************
126 ****************************************************************************/
128 /*************************************************************************
132 static acpi_handle root_handle
;
134 #define IBM_HANDLE(object, parent, paths...) \
135 static acpi_handle object##_handle; \
136 static acpi_handle *object##_parent = &parent##_handle; \
137 static char *object##_path; \
138 static char *object##_paths[] = { paths }
140 IBM_HANDLE(ec
, root
, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
141 "\\_SB.PCI.ISA.EC", /* 570 */
142 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
143 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
144 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
145 "\\_SB.PCI0.ICH3.EC0", /* R31 */
146 "\\_SB.PCI0.LPC.EC", /* all others */
149 IBM_HANDLE(ecrd
, ec
, "ECRD"); /* 570 */
150 IBM_HANDLE(ecwr
, ec
, "ECWR"); /* 570 */
153 /*************************************************************************
157 IBM_HANDLE(cmos
, root
, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */
158 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
159 "\\CMS", /* R40, R40e */
162 IBM_HANDLE(hkey
, ec
, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
163 "^HKEY", /* R30, R31 */
164 "HKEY", /* all others */
168 /*************************************************************************
172 static int acpi_evalf(acpi_handle handle
,
173 void *res
, char *method
, char *fmt
, ...)
176 struct acpi_object_list params
;
177 union acpi_object in_objs
[IBM_MAX_ACPI_ARGS
];
178 struct acpi_buffer result
, *resultp
;
179 union acpi_object out_obj
;
187 printk(IBM_ERR
"acpi_evalf() called with empty format\n");
200 params
.pointer
= &in_objs
[0];
207 in_objs
[params
.count
].integer
.value
= va_arg(ap
, int);
208 in_objs
[params
.count
++].type
= ACPI_TYPE_INTEGER
;
210 /* add more types as needed */
212 printk(IBM_ERR
"acpi_evalf() called "
213 "with invalid format character '%c'\n", c
);
219 if (res_type
!= 'v') {
220 result
.length
= sizeof(out_obj
);
221 result
.pointer
= &out_obj
;
226 status
= acpi_evaluate_object(handle
, method
, ¶ms
, resultp
);
231 *(int *)res
= out_obj
.integer
.value
;
232 success
= status
== AE_OK
&& out_obj
.type
== ACPI_TYPE_INTEGER
;
235 success
= status
== AE_OK
;
237 /* add more types as needed */
239 printk(IBM_ERR
"acpi_evalf() called "
240 "with invalid format character '%c'\n", res_type
);
244 if (!success
&& !quiet
)
245 printk(IBM_ERR
"acpi_evalf(%s, %s, ...) failed: %d\n",
246 method
, fmt0
, status
);
251 static void __unused
acpi_print_int(acpi_handle handle
, char *method
)
255 if (acpi_evalf(handle
, &i
, method
, "d"))
256 printk(IBM_INFO
"%s = 0x%x\n", method
, i
);
258 printk(IBM_ERR
"error calling %s\n", method
);
261 static int acpi_ec_read(int i
, u8
* p
)
266 if (!acpi_evalf(ecrd_handle
, &v
, NULL
, "dd", i
))
270 if (ec_read(i
, p
) < 0)
277 static int acpi_ec_write(int i
, u8 v
)
280 if (!acpi_evalf(ecwr_handle
, NULL
, NULL
, "vdd", i
, v
))
283 if (ec_write(i
, v
) < 0)
290 static int _sta(acpi_handle handle
)
294 if (!handle
|| !acpi_evalf(handle
, &status
, "_STA", "d"))
300 static int issue_thinkpad_cmos_command(int cmos_cmd
)
305 if (!acpi_evalf(cmos_handle
, NULL
, NULL
, "vd", cmos_cmd
))
311 /*************************************************************************
315 static void drv_acpi_handle_init(char *name
,
316 acpi_handle
*handle
, acpi_handle parent
,
317 char **paths
, int num_paths
, char **path
)
322 vdbg_printk(TPACPI_DBG_INIT
, "trying to locate ACPI handle for %s\n",
325 for (i
= 0; i
< num_paths
; i
++) {
326 status
= acpi_get_handle(parent
, paths
[i
], handle
);
327 if (ACPI_SUCCESS(status
)) {
329 dbg_printk(TPACPI_DBG_INIT
,
330 "Found ACPI handle %s for %s\n",
336 vdbg_printk(TPACPI_DBG_INIT
, "ACPI handle for %s not found\n",
341 static void dispatch_acpi_notify(acpi_handle handle
, u32 event
, void *data
)
343 struct ibm_struct
*ibm
= data
;
345 if (!ibm
|| !ibm
->acpi
|| !ibm
->acpi
->notify
)
348 ibm
->acpi
->notify(ibm
, event
);
351 static int __init
setup_acpi_notify(struct ibm_struct
*ibm
)
358 if (!*ibm
->acpi
->handle
)
361 vdbg_printk(TPACPI_DBG_INIT
,
362 "setting up ACPI notify for %s\n", ibm
->name
);
364 rc
= acpi_bus_get_device(*ibm
->acpi
->handle
, &ibm
->acpi
->device
);
366 printk(IBM_ERR
"acpi_bus_get_device(%s) failed: %d\n",
371 acpi_driver_data(ibm
->acpi
->device
) = ibm
;
372 sprintf(acpi_device_class(ibm
->acpi
->device
), "%s/%s",
373 IBM_ACPI_EVENT_PREFIX
,
376 status
= acpi_install_notify_handler(*ibm
->acpi
->handle
,
377 ibm
->acpi
->type
, dispatch_acpi_notify
, ibm
);
378 if (ACPI_FAILURE(status
)) {
379 if (status
== AE_ALREADY_EXISTS
) {
380 printk(IBM_NOTICE
"another device driver is already handling %s events\n",
383 printk(IBM_ERR
"acpi_install_notify_handler(%s) failed: %d\n",
388 ibm
->flags
.acpi_notify_installed
= 1;
392 static int __init
tpacpi_device_add(struct acpi_device
*device
)
397 static int __init
register_tpacpi_subdriver(struct ibm_struct
*ibm
)
401 dbg_printk(TPACPI_DBG_INIT
,
402 "registering %s as an ACPI driver\n", ibm
->name
);
406 ibm
->acpi
->driver
= kzalloc(sizeof(struct acpi_driver
), GFP_KERNEL
);
407 if (!ibm
->acpi
->driver
) {
408 printk(IBM_ERR
"kzalloc(ibm->driver) failed\n");
412 sprintf(ibm
->acpi
->driver
->name
, "%s_%s", IBM_NAME
, ibm
->name
);
413 ibm
->acpi
->driver
->ids
= ibm
->acpi
->hid
;
415 ibm
->acpi
->driver
->ops
.add
= &tpacpi_device_add
;
417 rc
= acpi_bus_register_driver(ibm
->acpi
->driver
);
419 printk(IBM_ERR
"acpi_bus_register_driver(%s) failed: %d\n",
421 kfree(ibm
->acpi
->driver
);
422 ibm
->acpi
->driver
= NULL
;
424 ibm
->flags
.acpi_driver_registered
= 1;
430 /****************************************************************************
431 ****************************************************************************
435 ****************************************************************************
436 ****************************************************************************/
438 static int dispatch_procfs_read(char *page
, char **start
, off_t off
,
439 int count
, int *eof
, void *data
)
441 struct ibm_struct
*ibm
= data
;
444 if (!ibm
|| !ibm
->read
)
447 len
= ibm
->read(page
);
451 if (len
<= off
+ count
)
463 static int dispatch_procfs_write(struct file
*file
,
464 const char __user
* userbuf
,
465 unsigned long count
, void *data
)
467 struct ibm_struct
*ibm
= data
;
471 if (!ibm
|| !ibm
->write
)
474 kernbuf
= kmalloc(count
+ 2, GFP_KERNEL
);
478 if (copy_from_user(kernbuf
, userbuf
, count
)) {
484 strcat(kernbuf
, ",");
485 ret
= ibm
->write(kernbuf
);
494 static char *next_cmd(char **cmds
)
499 while ((end
= strchr(start
, ',')) && end
== start
)
511 /****************************************************************************
512 ****************************************************************************
514 * Device model: input, hwmon and platform
516 ****************************************************************************
517 ****************************************************************************/
519 static struct platform_device
*tpacpi_pdev
;
520 static struct class_device
*tpacpi_hwmon
;
521 static struct input_dev
*tpacpi_inputdev
;
524 static int tpacpi_resume_handler(struct platform_device
*pdev
)
526 struct ibm_struct
*ibm
, *itmp
;
528 list_for_each_entry_safe(ibm
, itmp
,
538 static struct platform_driver tpacpi_pdriver
= {
540 .name
= IBM_DRVR_NAME
,
541 .owner
= THIS_MODULE
,
543 .resume
= tpacpi_resume_handler
,
547 /*************************************************************************
548 * thinkpad-acpi driver attributes
551 /* interface_version --------------------------------------------------- */
552 static ssize_t
tpacpi_driver_interface_version_show(
553 struct device_driver
*drv
,
556 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", TPACPI_SYSFS_VERSION
);
559 static DRIVER_ATTR(interface_version
, S_IRUGO
,
560 tpacpi_driver_interface_version_show
, NULL
);
562 /* debug_level --------------------------------------------------------- */
563 static ssize_t
tpacpi_driver_debug_show(struct device_driver
*drv
,
566 return snprintf(buf
, PAGE_SIZE
, "0x%04x\n", dbg_level
);
569 static ssize_t
tpacpi_driver_debug_store(struct device_driver
*drv
,
570 const char *buf
, size_t count
)
574 if (parse_strtoul(buf
, 0xffff, &t
))
582 static DRIVER_ATTR(debug_level
, S_IWUSR
| S_IRUGO
,
583 tpacpi_driver_debug_show
, tpacpi_driver_debug_store
);
585 /* version ------------------------------------------------------------- */
586 static ssize_t
tpacpi_driver_version_show(struct device_driver
*drv
,
589 return snprintf(buf
, PAGE_SIZE
, "%s v%s\n", IBM_DESC
, IBM_VERSION
);
592 static DRIVER_ATTR(version
, S_IRUGO
,
593 tpacpi_driver_version_show
, NULL
);
595 /* --------------------------------------------------------------------- */
597 static struct driver_attribute
* tpacpi_driver_attributes
[] = {
598 &driver_attr_debug_level
, &driver_attr_version
,
599 &driver_attr_interface_version
,
602 static int __init
tpacpi_create_driver_attributes(struct device_driver
*drv
)
608 while (!res
&& i
< ARRAY_SIZE(tpacpi_driver_attributes
)) {
609 res
= driver_create_file(drv
, tpacpi_driver_attributes
[i
]);
616 static void tpacpi_remove_driver_attributes(struct device_driver
*drv
)
620 for(i
= 0; i
< ARRAY_SIZE(tpacpi_driver_attributes
); i
++)
621 driver_remove_file(drv
, tpacpi_driver_attributes
[i
]);
624 /*************************************************************************
625 * sysfs support helpers
628 struct attribute_set_obj
{
629 struct attribute_set s
;
631 } __attribute__((packed
));
633 static struct attribute_set
*create_attr_set(unsigned int max_members
,
636 struct attribute_set_obj
*sobj
;
638 if (max_members
== 0)
641 /* Allocates space for implicit NULL at the end too */
642 sobj
= kzalloc(sizeof(struct attribute_set_obj
) +
643 max_members
* sizeof(struct attribute
*),
647 sobj
->s
.max_members
= max_members
;
648 sobj
->s
.group
.attrs
= &sobj
->a
;
649 sobj
->s
.group
.name
= name
;
654 /* not multi-threaded safe, use it in a single thread per set */
655 static int add_to_attr_set(struct attribute_set
* s
, struct attribute
*attr
)
660 if (s
->members
>= s
->max_members
)
663 s
->group
.attrs
[s
->members
] = attr
;
669 static int add_many_to_attr_set(struct attribute_set
* s
,
670 struct attribute
**attr
,
675 for (i
= 0; i
< count
; i
++) {
676 res
= add_to_attr_set(s
, attr
[i
]);
684 static void delete_attr_set(struct attribute_set
* s
, struct kobject
*kobj
)
686 sysfs_remove_group(kobj
, &s
->group
);
690 static int parse_strtoul(const char *buf
,
691 unsigned long max
, unsigned long *value
)
695 *value
= simple_strtoul(buf
, &endp
, 0);
696 while (*endp
&& isspace(*endp
))
698 if (*endp
|| *value
> max
)
704 /****************************************************************************
705 ****************************************************************************
709 ****************************************************************************
710 ****************************************************************************/
712 /*************************************************************************
713 * thinkpad-acpi init subdriver
716 static int __init
thinkpad_acpi_driver_init(struct ibm_init_struct
*iibm
)
718 printk(IBM_INFO
"%s v%s\n", IBM_DESC
, IBM_VERSION
);
719 printk(IBM_INFO
"%s\n", IBM_URL
);
721 printk(IBM_INFO
"ThinkPad BIOS %s, EC %s\n",
722 (thinkpad_id
.bios_version_str
) ?
723 thinkpad_id
.bios_version_str
: "unknown",
724 (thinkpad_id
.ec_version_str
) ?
725 thinkpad_id
.ec_version_str
: "unknown");
727 if (thinkpad_id
.vendor
&& thinkpad_id
.model_str
)
728 printk(IBM_INFO
"%s %s\n",
729 (thinkpad_id
.vendor
== PCI_VENDOR_ID_IBM
) ?
730 "IBM" : ((thinkpad_id
.vendor
==
731 PCI_VENDOR_ID_LENOVO
) ?
732 "Lenovo" : "Unknown vendor"),
733 thinkpad_id
.model_str
);
738 static int thinkpad_acpi_driver_read(char *p
)
742 len
+= sprintf(p
+ len
, "driver:\t\t%s\n", IBM_DESC
);
743 len
+= sprintf(p
+ len
, "version:\t%s\n", IBM_VERSION
);
748 static struct ibm_struct thinkpad_acpi_driver_data
= {
750 .read
= thinkpad_acpi_driver_read
,
753 /*************************************************************************
757 static int hotkey_orig_status
;
758 static u32 hotkey_orig_mask
;
759 static u32 hotkey_all_mask
;
760 static u32 hotkey_reserved_mask
;
762 static u16
*hotkey_keycode_map
;
764 static struct attribute_set
*hotkey_dev_attributes
;
766 static int hotkey_get_wlsw(int *status
)
768 if (!acpi_evalf(hkey_handle
, status
, "WLSW", "d"))
773 /* sysfs hotkey enable ------------------------------------------------- */
774 static ssize_t
hotkey_enable_show(struct device
*dev
,
775 struct device_attribute
*attr
,
781 res
= hotkey_get(&status
, &mask
);
785 return snprintf(buf
, PAGE_SIZE
, "%d\n", status
);
788 static ssize_t
hotkey_enable_store(struct device
*dev
,
789 struct device_attribute
*attr
,
790 const char *buf
, size_t count
)
796 if (parse_strtoul(buf
, 1, &t
))
799 res
= hotkey_get(&status
, &mask
);
801 res
= hotkey_set(t
, mask
);
803 return (res
) ? res
: count
;
806 static struct device_attribute dev_attr_hotkey_enable
=
807 __ATTR(hotkey_enable
, S_IWUSR
| S_IRUGO
,
808 hotkey_enable_show
, hotkey_enable_store
);
810 /* sysfs hotkey mask --------------------------------------------------- */
811 static ssize_t
hotkey_mask_show(struct device
*dev
,
812 struct device_attribute
*attr
,
818 res
= hotkey_get(&status
, &mask
);
822 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", mask
);
825 static ssize_t
hotkey_mask_store(struct device
*dev
,
826 struct device_attribute
*attr
,
827 const char *buf
, size_t count
)
833 if (parse_strtoul(buf
, 0xffffffffUL
, &t
))
836 res
= hotkey_get(&status
, &mask
);
838 hotkey_set(status
, t
);
840 return (res
) ? res
: count
;
843 static struct device_attribute dev_attr_hotkey_mask
=
844 __ATTR(hotkey_mask
, S_IWUSR
| S_IRUGO
,
845 hotkey_mask_show
, hotkey_mask_store
);
847 /* sysfs hotkey bios_enabled ------------------------------------------- */
848 static ssize_t
hotkey_bios_enabled_show(struct device
*dev
,
849 struct device_attribute
*attr
,
852 return snprintf(buf
, PAGE_SIZE
, "%d\n", hotkey_orig_status
);
855 static struct device_attribute dev_attr_hotkey_bios_enabled
=
856 __ATTR(hotkey_bios_enabled
, S_IRUGO
, hotkey_bios_enabled_show
, NULL
);
858 /* sysfs hotkey bios_mask ---------------------------------------------- */
859 static ssize_t
hotkey_bios_mask_show(struct device
*dev
,
860 struct device_attribute
*attr
,
863 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_orig_mask
);
866 static struct device_attribute dev_attr_hotkey_bios_mask
=
867 __ATTR(hotkey_bios_mask
, S_IRUGO
, hotkey_bios_mask_show
, NULL
);
869 /* sysfs hotkey all_mask ----------------------------------------------- */
870 static ssize_t
hotkey_all_mask_show(struct device
*dev
,
871 struct device_attribute
*attr
,
874 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n", hotkey_all_mask
);
877 static struct device_attribute dev_attr_hotkey_all_mask
=
878 __ATTR(hotkey_all_mask
, S_IRUGO
, hotkey_all_mask_show
, NULL
);
880 /* sysfs hotkey recommended_mask --------------------------------------- */
881 static ssize_t
hotkey_recommended_mask_show(struct device
*dev
,
882 struct device_attribute
*attr
,
885 return snprintf(buf
, PAGE_SIZE
, "0x%08x\n",
886 hotkey_all_mask
& ~hotkey_reserved_mask
);
889 static struct device_attribute dev_attr_hotkey_recommended_mask
=
890 __ATTR(hotkey_recommended_mask
, S_IRUGO
,
891 hotkey_recommended_mask_show
, NULL
);
893 /* sysfs hotkey radio_sw ----------------------------------------------- */
894 static ssize_t
hotkey_radio_sw_show(struct device
*dev
,
895 struct device_attribute
*attr
,
899 res
= hotkey_get_wlsw(&s
);
903 return snprintf(buf
, PAGE_SIZE
, "%d\n", !!s
);
906 static struct device_attribute dev_attr_hotkey_radio_sw
=
907 __ATTR(hotkey_radio_sw
, S_IRUGO
, hotkey_radio_sw_show
, NULL
);
909 /* --------------------------------------------------------------------- */
911 static struct attribute
*hotkey_mask_attributes
[] = {
912 &dev_attr_hotkey_mask
.attr
,
913 &dev_attr_hotkey_bios_enabled
.attr
,
914 &dev_attr_hotkey_bios_mask
.attr
,
915 &dev_attr_hotkey_all_mask
.attr
,
916 &dev_attr_hotkey_recommended_mask
.attr
,
919 static int __init
hotkey_init(struct ibm_init_struct
*iibm
)
922 static u16 ibm_keycode_map
[] __initdata
= {
923 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
924 KEY_FN_F1
, KEY_FN_F2
, KEY_COFFEE
, KEY_SLEEP
,
925 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
926 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
927 /* Scan codes 0x0C to 0x0F: Other ACPI HKEY hot keys */
928 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
929 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
930 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
931 KEY_RESERVED
, /* 0x0F: FN+HOME (brightness up) */
932 /* Scan codes 0x10 to 0x1F: Extended ACPI HKEY hot keys */
933 KEY_RESERVED
, /* 0x10: FN+END (brightness down) */
934 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
935 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
936 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
937 KEY_RESERVED
, /* 0x14: VOLUME UP */
938 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
939 KEY_RESERVED
, /* 0x16: MUTE */
940 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
941 /* (assignments unknown, please report if found) */
942 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
943 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
945 static u16 lenovo_keycode_map
[] __initdata
= {
946 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
947 KEY_FN_F1
, KEY_COFFEE
, KEY_BATTERY
, KEY_SLEEP
,
948 KEY_WLAN
, KEY_FN_F6
, KEY_SWITCHVIDEOMODE
, KEY_FN_F8
,
949 KEY_FN_F9
, KEY_FN_F10
, KEY_FN_F11
, KEY_SUSPEND
,
950 /* Scan codes 0x0C to 0x0F: Other ACPI HKEY hot keys */
951 KEY_UNKNOWN
, /* 0x0C: FN+BACKSPACE */
952 KEY_UNKNOWN
, /* 0x0D: FN+INSERT */
953 KEY_UNKNOWN
, /* 0x0E: FN+DELETE */
954 KEY_BRIGHTNESSUP
, /* 0x0F: FN+HOME (brightness up) */
955 /* Scan codes 0x10 to 0x1F: Extended ACPI HKEY hot keys */
956 KEY_BRIGHTNESSDOWN
, /* 0x10: FN+END (brightness down) */
957 KEY_RESERVED
, /* 0x11: FN+PGUP (thinklight toggle) */
958 KEY_UNKNOWN
, /* 0x12: FN+PGDOWN */
959 KEY_ZOOM
, /* 0x13: FN+SPACE (zoom) */
960 KEY_RESERVED
, /* 0x14: VOLUME UP */
961 KEY_RESERVED
, /* 0x15: VOLUME DOWN */
962 KEY_RESERVED
, /* 0x16: MUTE */
963 KEY_VENDOR
, /* 0x17: Thinkpad/AccessIBM/Lenovo */
964 /* (assignments unknown, please report if found) */
965 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
966 KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
, KEY_UNKNOWN
,
969 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
970 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
971 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
976 vdbg_printk(TPACPI_DBG_INIT
, "initializing hotkey subdriver\n");
978 BUG_ON(!tpacpi_inputdev
);
980 IBM_ACPIHANDLE_INIT(hkey
);
981 mutex_init(&hotkey_mutex
);
983 /* hotkey not supported on 570 */
984 tp_features
.hotkey
= hkey_handle
!= NULL
;
986 vdbg_printk(TPACPI_DBG_INIT
, "hotkeys are %s\n",
987 str_supported(tp_features
.hotkey
));
989 if (tp_features
.hotkey
) {
990 hotkey_dev_attributes
= create_attr_set(7, NULL
);
991 if (!hotkey_dev_attributes
)
993 res
= add_to_attr_set(hotkey_dev_attributes
,
994 &dev_attr_hotkey_enable
.attr
);
998 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
999 A30, R30, R31, T20-22, X20-21, X22-24 */
1000 tp_features
.hotkey_mask
=
1001 acpi_evalf(hkey_handle
, NULL
, "DHKN", "qv");
1003 vdbg_printk(TPACPI_DBG_INIT
, "hotkey masks are %s\n",
1004 str_supported(tp_features
.hotkey_mask
));
1006 if (tp_features
.hotkey_mask
) {
1007 /* MHKA available in A31, R40, R40e, T4x, X31, and later */
1008 if (!acpi_evalf(hkey_handle
, &hotkey_all_mask
,
1010 hotkey_all_mask
= 0x080cU
; /* FN+F12, FN+F4, FN+F3 */
1013 res
= hotkey_get(&hotkey_orig_status
, &hotkey_orig_mask
);
1014 if (!res
&& tp_features
.hotkey_mask
) {
1015 res
= add_many_to_attr_set(hotkey_dev_attributes
,
1016 hotkey_mask_attributes
,
1017 ARRAY_SIZE(hotkey_mask_attributes
));
1020 /* Not all thinkpads have a hardware radio switch */
1021 if (!res
&& acpi_evalf(hkey_handle
, &status
, "WLSW", "qd")) {
1022 tp_features
.hotkey_wlsw
= 1;
1024 "radio switch found; radios are %s\n",
1025 enabled(status
, 0));
1026 res
= add_to_attr_set(hotkey_dev_attributes
,
1027 &dev_attr_hotkey_radio_sw
.attr
);
1031 res
= register_attr_set_with_sysfs(
1032 hotkey_dev_attributes
,
1033 &tpacpi_pdev
->dev
.kobj
);
1037 /* Set up key map */
1039 hotkey_keycode_map
= kmalloc(TPACPI_HOTKEY_MAP_SIZE
,
1041 if (!hotkey_keycode_map
) {
1042 printk(IBM_ERR
"failed to allocate memory for key map\n");
1046 if (thinkpad_id
.vendor
== PCI_VENDOR_ID_LENOVO
) {
1047 dbg_printk(TPACPI_DBG_INIT
,
1048 "using Lenovo default hot key map\n");
1049 memcpy(hotkey_keycode_map
, &lenovo_keycode_map
,
1050 TPACPI_HOTKEY_MAP_SIZE
);
1052 dbg_printk(TPACPI_DBG_INIT
,
1053 "using IBM default hot key map\n");
1054 memcpy(hotkey_keycode_map
, &ibm_keycode_map
,
1055 TPACPI_HOTKEY_MAP_SIZE
);
1058 #ifndef CONFIG_THINKPAD_ACPI_INPUT_ENABLED
1059 for (i
= 0; i
< 12; i
++)
1060 hotkey_keycode_map
[i
] = KEY_UNKNOWN
;
1061 #endif /* ! CONFIG_THINKPAD_ACPI_INPUT_ENABLED */
1063 set_bit(EV_KEY
, tpacpi_inputdev
->evbit
);
1064 set_bit(EV_MSC
, tpacpi_inputdev
->evbit
);
1065 set_bit(MSC_SCAN
, tpacpi_inputdev
->mscbit
);
1066 tpacpi_inputdev
->keycodesize
= TPACPI_HOTKEY_MAP_TYPESIZE
;
1067 tpacpi_inputdev
->keycodemax
= TPACPI_HOTKEY_MAP_LEN
;
1068 tpacpi_inputdev
->keycode
= hotkey_keycode_map
;
1069 for (i
= 0; i
< TPACPI_HOTKEY_MAP_LEN
; i
++) {
1070 if (hotkey_keycode_map
[i
] != KEY_RESERVED
) {
1071 set_bit(hotkey_keycode_map
[i
],
1072 tpacpi_inputdev
->keybit
);
1074 if (i
< sizeof(hotkey_reserved_mask
)*8)
1075 hotkey_reserved_mask
|= 1 << i
;
1079 if (tp_features
.hotkey_wlsw
) {
1080 set_bit(EV_SW
, tpacpi_inputdev
->evbit
);
1081 set_bit(SW_RADIO
, tpacpi_inputdev
->swbit
);
1084 #ifdef CONFIG_THINKPAD_ACPI_INPUT_ENABLED
1085 dbg_printk(TPACPI_DBG_INIT
,
1086 "enabling hot key handling\n");
1087 res
= hotkey_set(1, (hotkey_all_mask
& ~hotkey_reserved_mask
)
1088 | hotkey_orig_mask
);
1091 #endif /* CONFIG_THINKPAD_ACPI_INPUT_ENABLED */
1094 return (tp_features
.hotkey
)? 0 : 1;
1097 static void hotkey_exit(void)
1101 if (tp_features
.hotkey
) {
1102 dbg_printk(TPACPI_DBG_EXIT
, "restoring original hotkey mask\n");
1103 res
= hotkey_set(hotkey_orig_status
, hotkey_orig_mask
);
1105 printk(IBM_ERR
"failed to restore hotkey to BIOS defaults\n");
1108 if (hotkey_dev_attributes
) {
1109 delete_attr_set(hotkey_dev_attributes
, &tpacpi_pdev
->dev
.kobj
);
1110 hotkey_dev_attributes
= NULL
;
1114 static void tpacpi_input_send_key(unsigned int scancode
,
1115 unsigned int keycode
)
1117 if (keycode
!= KEY_RESERVED
) {
1118 input_report_key(tpacpi_inputdev
, keycode
, 1);
1119 if (keycode
== KEY_UNKNOWN
)
1120 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
,
1122 input_sync(tpacpi_inputdev
);
1124 input_report_key(tpacpi_inputdev
, keycode
, 0);
1125 if (keycode
== KEY_UNKNOWN
)
1126 input_event(tpacpi_inputdev
, EV_MSC
, MSC_SCAN
,
1128 input_sync(tpacpi_inputdev
);
1132 static void tpacpi_input_send_radiosw(void)
1136 if (tp_features
.hotkey_wlsw
&& !hotkey_get_wlsw(&wlsw
))
1137 input_report_switch(tpacpi_inputdev
,
1141 static void hotkey_notify(struct ibm_struct
*ibm
, u32 event
)
1144 unsigned int keycode
, scancode
;
1147 if (event
== 0x80 && acpi_evalf(hkey_handle
, &hkey
, "MHKP", "d")) {
1148 if (tpacpi_inputdev
->users
> 0) {
1149 switch (hkey
>> 12) {
1151 /* 0x1000-0x1FFF: key presses */
1152 scancode
= hkey
& 0xfff;
1153 if (scancode
> 0 && scancode
< 0x21) {
1155 keycode
= hotkey_keycode_map
[scancode
];
1156 tpacpi_input_send_key(scancode
, keycode
);
1157 sendacpi
= (keycode
== KEY_RESERVED
1158 || keycode
== KEY_UNKNOWN
);
1161 "hotkey 0x%04x out of range for keyboard map\n",
1166 /* 0x5000-0x5FFF: LID */
1167 /* we don't handle it through this path, just
1168 * eat up known LID events */
1169 if (hkey
!= 0x5001 && hkey
!= 0x5002) {
1171 "unknown LID-related hotkey event: 0x%04x\n",
1176 /* 0x7000-0x7FFF: misc */
1177 if (tp_features
.hotkey_wlsw
&& hkey
== 0x7000) {
1178 tpacpi_input_send_radiosw();
1182 /* fallthrough to default */
1184 /* case 2: dock-related */
1185 /* 0x2305 - T43 waking up due to bay lever eject while aslept */
1186 /* case 3: ultra-bay related. maybe bay in dock? */
1187 /* 0x3003 - T43 after wake up by bay lever eject (0x2305) */
1188 printk(IBM_NOTICE
"unhandled hotkey event 0x%04x\n", hkey
);
1193 acpi_bus_generate_event(ibm
->acpi
->device
, event
, hkey
);
1195 printk(IBM_ERR
"unknown hotkey notification event %d\n", event
);
1196 acpi_bus_generate_event(ibm
->acpi
->device
, event
, 0);
1200 static void hotkey_resume(void)
1202 tpacpi_input_send_radiosw();
1206 * Call with hotkey_mutex held
1208 static int hotkey_get(int *status
, u32
*mask
)
1210 if (!acpi_evalf(hkey_handle
, status
, "DHKC", "d"))
1213 if (tp_features
.hotkey_mask
)
1214 if (!acpi_evalf(hkey_handle
, mask
, "DHKN", "d"))
1221 * Call with hotkey_mutex held
1223 static int hotkey_set(int status
, u32 mask
)
1227 if (!acpi_evalf(hkey_handle
, NULL
, "MHKC", "vd", status
))
1230 if (tp_features
.hotkey_mask
)
1231 for (i
= 0; i
< 32; i
++) {
1232 int bit
= ((1 << i
) & mask
) != 0;
1233 if (!acpi_evalf(hkey_handle
,
1234 NULL
, "MHKM", "vdd", i
+ 1, bit
))
1241 /* procfs -------------------------------------------------------------- */
1242 static int hotkey_read(char *p
)
1248 if (!tp_features
.hotkey
) {
1249 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
1253 res
= mutex_lock_interruptible(&hotkey_mutex
);
1256 res
= hotkey_get(&status
, &mask
);
1257 mutex_unlock(&hotkey_mutex
);
1261 len
+= sprintf(p
+ len
, "status:\t\t%s\n", enabled(status
, 0));
1262 if (tp_features
.hotkey_mask
) {
1263 len
+= sprintf(p
+ len
, "mask:\t\t0x%08x\n", mask
);
1264 len
+= sprintf(p
+ len
,
1265 "commands:\tenable, disable, reset, <mask>\n");
1267 len
+= sprintf(p
+ len
, "mask:\t\tnot supported\n");
1268 len
+= sprintf(p
+ len
, "commands:\tenable, disable, reset\n");
1274 static int hotkey_write(char *buf
)
1281 if (!tp_features
.hotkey
)
1284 res
= mutex_lock_interruptible(&hotkey_mutex
);
1288 res
= hotkey_get(&status
, &mask
);
1293 while ((cmd
= next_cmd(&buf
))) {
1294 if (strlencmp(cmd
, "enable") == 0) {
1296 } else if (strlencmp(cmd
, "disable") == 0) {
1298 } else if (strlencmp(cmd
, "reset") == 0) {
1299 status
= hotkey_orig_status
;
1300 mask
= hotkey_orig_mask
;
1301 } else if (sscanf(cmd
, "0x%x", &mask
) == 1) {
1303 } else if (sscanf(cmd
, "%x", &mask
) == 1) {
1313 res
= hotkey_set(status
, mask
);
1316 mutex_unlock(&hotkey_mutex
);
1320 static const struct acpi_device_id ibm_htk_device_ids
[] = {
1325 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver
= {
1326 .hid
= ibm_htk_device_ids
,
1327 .notify
= hotkey_notify
,
1328 .handle
= &hkey_handle
,
1329 .type
= ACPI_DEVICE_NOTIFY
,
1332 static struct ibm_struct hotkey_driver_data
= {
1334 .read
= hotkey_read
,
1335 .write
= hotkey_write
,
1336 .exit
= hotkey_exit
,
1337 .resume
= hotkey_resume
,
1338 .acpi
= &ibm_hotkey_acpidriver
,
1341 /*************************************************************************
1342 * Bluetooth subdriver
1345 /* sysfs bluetooth enable ---------------------------------------------- */
1346 static ssize_t
bluetooth_enable_show(struct device
*dev
,
1347 struct device_attribute
*attr
,
1352 status
= bluetooth_get_radiosw();
1356 return snprintf(buf
, PAGE_SIZE
, "%d\n", status
? 1 : 0);
1359 static ssize_t
bluetooth_enable_store(struct device
*dev
,
1360 struct device_attribute
*attr
,
1361 const char *buf
, size_t count
)
1366 if (parse_strtoul(buf
, 1, &t
))
1369 res
= bluetooth_set_radiosw(t
);
1371 return (res
) ? res
: count
;
1374 static struct device_attribute dev_attr_bluetooth_enable
=
1375 __ATTR(bluetooth_enable
, S_IWUSR
| S_IRUGO
,
1376 bluetooth_enable_show
, bluetooth_enable_store
);
1378 /* --------------------------------------------------------------------- */
1380 static struct attribute
*bluetooth_attributes
[] = {
1381 &dev_attr_bluetooth_enable
.attr
,
1385 static const struct attribute_group bluetooth_attr_group
= {
1386 .attrs
= bluetooth_attributes
,
1389 static int __init
bluetooth_init(struct ibm_init_struct
*iibm
)
1394 vdbg_printk(TPACPI_DBG_INIT
, "initializing bluetooth subdriver\n");
1396 IBM_ACPIHANDLE_INIT(hkey
);
1398 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1399 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
1400 tp_features
.bluetooth
= hkey_handle
&&
1401 acpi_evalf(hkey_handle
, &status
, "GBDC", "qd");
1403 vdbg_printk(TPACPI_DBG_INIT
, "bluetooth is %s, status 0x%02x\n",
1404 str_supported(tp_features
.bluetooth
),
1407 if (tp_features
.bluetooth
) {
1408 if (!(status
& TP_ACPI_BLUETOOTH_HWPRESENT
)) {
1409 /* no bluetooth hardware present in system */
1410 tp_features
.bluetooth
= 0;
1411 dbg_printk(TPACPI_DBG_INIT
,
1412 "bluetooth hardware not installed\n");
1414 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
1415 &bluetooth_attr_group
);
1421 return (tp_features
.bluetooth
)? 0 : 1;
1424 static void bluetooth_exit(void)
1426 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
1427 &bluetooth_attr_group
);
1430 static int bluetooth_get_radiosw(void)
1434 if (!tp_features
.bluetooth
)
1437 if (!acpi_evalf(hkey_handle
, &status
, "GBDC", "d"))
1440 return ((status
& TP_ACPI_BLUETOOTH_RADIOSSW
) != 0);
1443 static int bluetooth_set_radiosw(int radio_on
)
1447 if (!tp_features
.bluetooth
)
1450 if (!acpi_evalf(hkey_handle
, &status
, "GBDC", "d"))
1453 status
|= TP_ACPI_BLUETOOTH_RADIOSSW
;
1455 status
&= ~TP_ACPI_BLUETOOTH_RADIOSSW
;
1456 if (!acpi_evalf(hkey_handle
, NULL
, "SBDC", "vd", status
))
1462 /* procfs -------------------------------------------------------------- */
1463 static int bluetooth_read(char *p
)
1466 int status
= bluetooth_get_radiosw();
1468 if (!tp_features
.bluetooth
)
1469 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
1471 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
1472 (status
)? "enabled" : "disabled");
1473 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n");
1479 static int bluetooth_write(char *buf
)
1483 if (!tp_features
.bluetooth
)
1486 while ((cmd
= next_cmd(&buf
))) {
1487 if (strlencmp(cmd
, "enable") == 0) {
1488 bluetooth_set_radiosw(1);
1489 } else if (strlencmp(cmd
, "disable") == 0) {
1490 bluetooth_set_radiosw(0);
1498 static struct ibm_struct bluetooth_driver_data
= {
1499 .name
= "bluetooth",
1500 .read
= bluetooth_read
,
1501 .write
= bluetooth_write
,
1502 .exit
= bluetooth_exit
,
1505 /*************************************************************************
1509 /* sysfs wan enable ---------------------------------------------------- */
1510 static ssize_t
wan_enable_show(struct device
*dev
,
1511 struct device_attribute
*attr
,
1516 status
= wan_get_radiosw();
1520 return snprintf(buf
, PAGE_SIZE
, "%d\n", status
? 1 : 0);
1523 static ssize_t
wan_enable_store(struct device
*dev
,
1524 struct device_attribute
*attr
,
1525 const char *buf
, size_t count
)
1530 if (parse_strtoul(buf
, 1, &t
))
1533 res
= wan_set_radiosw(t
);
1535 return (res
) ? res
: count
;
1538 static struct device_attribute dev_attr_wan_enable
=
1539 __ATTR(wwan_enable
, S_IWUSR
| S_IRUGO
,
1540 wan_enable_show
, wan_enable_store
);
1542 /* --------------------------------------------------------------------- */
1544 static struct attribute
*wan_attributes
[] = {
1545 &dev_attr_wan_enable
.attr
,
1549 static const struct attribute_group wan_attr_group
= {
1550 .attrs
= wan_attributes
,
1553 static int __init
wan_init(struct ibm_init_struct
*iibm
)
1558 vdbg_printk(TPACPI_DBG_INIT
, "initializing wan subdriver\n");
1560 IBM_ACPIHANDLE_INIT(hkey
);
1562 tp_features
.wan
= hkey_handle
&&
1563 acpi_evalf(hkey_handle
, &status
, "GWAN", "qd");
1565 vdbg_printk(TPACPI_DBG_INIT
, "wan is %s, status 0x%02x\n",
1566 str_supported(tp_features
.wan
),
1569 if (tp_features
.wan
) {
1570 if (!(status
& TP_ACPI_WANCARD_HWPRESENT
)) {
1571 /* no wan hardware present in system */
1572 tp_features
.wan
= 0;
1573 dbg_printk(TPACPI_DBG_INIT
,
1574 "wan hardware not installed\n");
1576 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
1583 return (tp_features
.wan
)? 0 : 1;
1586 static void wan_exit(void)
1588 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
1592 static int wan_get_radiosw(void)
1596 if (!tp_features
.wan
)
1599 if (!acpi_evalf(hkey_handle
, &status
, "GWAN", "d"))
1602 return ((status
& TP_ACPI_WANCARD_RADIOSSW
) != 0);
1605 static int wan_set_radiosw(int radio_on
)
1609 if (!tp_features
.wan
)
1612 if (!acpi_evalf(hkey_handle
, &status
, "GWAN", "d"))
1615 status
|= TP_ACPI_WANCARD_RADIOSSW
;
1617 status
&= ~TP_ACPI_WANCARD_RADIOSSW
;
1618 if (!acpi_evalf(hkey_handle
, NULL
, "SWAN", "vd", status
))
1624 /* procfs -------------------------------------------------------------- */
1625 static int wan_read(char *p
)
1628 int status
= wan_get_radiosw();
1630 if (!tp_features
.wan
)
1631 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
1633 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
1634 (status
)? "enabled" : "disabled");
1635 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n");
1641 static int wan_write(char *buf
)
1645 if (!tp_features
.wan
)
1648 while ((cmd
= next_cmd(&buf
))) {
1649 if (strlencmp(cmd
, "enable") == 0) {
1651 } else if (strlencmp(cmd
, "disable") == 0) {
1660 static struct ibm_struct wan_driver_data
= {
1665 .flags
.experimental
= 1,
1668 /*************************************************************************
1672 static enum video_access_mode video_supported
;
1673 static int video_orig_autosw
;
1675 IBM_HANDLE(vid
, root
, "\\_SB.PCI.AGP.VGA", /* 570 */
1676 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
1677 "\\_SB.PCI0.VID0", /* 770e */
1678 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
1679 "\\_SB.PCI0.AGP.VID", /* all others */
1682 IBM_HANDLE(vid2
, root
, "\\_SB.PCI0.AGPB.VID"); /* G41 */
1684 static int __init
video_init(struct ibm_init_struct
*iibm
)
1688 vdbg_printk(TPACPI_DBG_INIT
, "initializing video subdriver\n");
1690 IBM_ACPIHANDLE_INIT(vid
);
1691 IBM_ACPIHANDLE_INIT(vid2
);
1693 if (vid2_handle
&& acpi_evalf(NULL
, &ivga
, "\\IVGA", "d") && ivga
)
1694 /* G41, assume IVGA doesn't change */
1695 vid_handle
= vid2_handle
;
1698 /* video switching not supported on R30, R31 */
1699 video_supported
= TPACPI_VIDEO_NONE
;
1700 else if (acpi_evalf(vid_handle
, &video_orig_autosw
, "SWIT", "qd"))
1702 video_supported
= TPACPI_VIDEO_570
;
1703 else if (acpi_evalf(vid_handle
, &video_orig_autosw
, "^VADL", "qd"))
1704 /* 600e/x, 770e, 770x */
1705 video_supported
= TPACPI_VIDEO_770
;
1708 video_supported
= TPACPI_VIDEO_NEW
;
1710 vdbg_printk(TPACPI_DBG_INIT
, "video is %s, mode %d\n",
1711 str_supported(video_supported
!= TPACPI_VIDEO_NONE
),
1714 return (video_supported
!= TPACPI_VIDEO_NONE
)? 0 : 1;
1717 static void video_exit(void)
1719 dbg_printk(TPACPI_DBG_EXIT
,
1720 "restoring original video autoswitch mode\n");
1721 if (video_autosw_set(video_orig_autosw
))
1722 printk(IBM_ERR
"error while trying to restore original "
1723 "video autoswitch mode\n");
1726 static int video_outputsw_get(void)
1731 switch (video_supported
) {
1732 case TPACPI_VIDEO_570
:
1733 if (!acpi_evalf(NULL
, &i
, "\\_SB.PHS", "dd",
1734 TP_ACPI_VIDEO_570_PHSCMD
))
1736 status
= i
& TP_ACPI_VIDEO_570_PHSMASK
;
1738 case TPACPI_VIDEO_770
:
1739 if (!acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
1742 status
|= TP_ACPI_VIDEO_S_LCD
;
1743 if (!acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
1746 status
|= TP_ACPI_VIDEO_S_CRT
;
1748 case TPACPI_VIDEO_NEW
:
1749 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 1) ||
1750 !acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
1753 status
|= TP_ACPI_VIDEO_S_CRT
;
1755 if (!acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0) ||
1756 !acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
1759 status
|= TP_ACPI_VIDEO_S_LCD
;
1760 if (!acpi_evalf(NULL
, &i
, "\\VCDD", "d"))
1763 status
|= TP_ACPI_VIDEO_S_DVI
;
1772 static int video_outputsw_set(int status
)
1777 switch (video_supported
) {
1778 case TPACPI_VIDEO_570
:
1779 res
= acpi_evalf(NULL
, NULL
,
1780 "\\_SB.PHS2", "vdd",
1781 TP_ACPI_VIDEO_570_PHS2CMD
,
1782 status
| TP_ACPI_VIDEO_570_PHS2SET
);
1784 case TPACPI_VIDEO_770
:
1785 autosw
= video_autosw_get();
1789 res
= video_autosw_set(1);
1792 res
= acpi_evalf(vid_handle
, NULL
,
1793 "ASWT", "vdd", status
* 0x100, 0);
1794 if (!autosw
&& video_autosw_set(autosw
)) {
1795 printk(IBM_ERR
"video auto-switch left enabled due to error\n");
1799 case TPACPI_VIDEO_NEW
:
1800 res
= acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0x80) &&
1801 acpi_evalf(NULL
, NULL
, "\\VSDS", "vdd", status
, 1);
1807 return (res
)? 0 : -EIO
;
1810 static int video_autosw_get(void)
1814 switch (video_supported
) {
1815 case TPACPI_VIDEO_570
:
1816 if (!acpi_evalf(vid_handle
, &autosw
, "SWIT", "d"))
1819 case TPACPI_VIDEO_770
:
1820 case TPACPI_VIDEO_NEW
:
1821 if (!acpi_evalf(vid_handle
, &autosw
, "^VDEE", "d"))
1831 static int video_autosw_set(int enable
)
1833 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", (enable
)? 1 : 0))
1838 static int video_outputsw_cycle(void)
1840 int autosw
= video_autosw_get();
1846 switch (video_supported
) {
1847 case TPACPI_VIDEO_570
:
1848 res
= video_autosw_set(1);
1851 res
= acpi_evalf(ec_handle
, NULL
, "_Q16", "v");
1853 case TPACPI_VIDEO_770
:
1854 case TPACPI_VIDEO_NEW
:
1855 res
= video_autosw_set(1);
1858 res
= acpi_evalf(vid_handle
, NULL
, "VSWT", "v");
1863 if (!autosw
&& video_autosw_set(autosw
)) {
1864 printk(IBM_ERR
"video auto-switch left enabled due to error\n");
1868 return (res
)? 0 : -EIO
;
1871 static int video_expand_toggle(void)
1873 switch (video_supported
) {
1874 case TPACPI_VIDEO_570
:
1875 return acpi_evalf(ec_handle
, NULL
, "_Q17", "v")?
1877 case TPACPI_VIDEO_770
:
1878 return acpi_evalf(vid_handle
, NULL
, "VEXP", "v")?
1880 case TPACPI_VIDEO_NEW
:
1881 return acpi_evalf(NULL
, NULL
, "\\VEXP", "v")?
1889 static int video_read(char *p
)
1894 if (video_supported
== TPACPI_VIDEO_NONE
) {
1895 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
1899 status
= video_outputsw_get();
1903 autosw
= video_autosw_get();
1907 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
1908 len
+= sprintf(p
+ len
, "lcd:\t\t%s\n", enabled(status
, 0));
1909 len
+= sprintf(p
+ len
, "crt:\t\t%s\n", enabled(status
, 1));
1910 if (video_supported
== TPACPI_VIDEO_NEW
)
1911 len
+= sprintf(p
+ len
, "dvi:\t\t%s\n", enabled(status
, 3));
1912 len
+= sprintf(p
+ len
, "auto:\t\t%s\n", enabled(autosw
, 0));
1913 len
+= sprintf(p
+ len
, "commands:\tlcd_enable, lcd_disable\n");
1914 len
+= sprintf(p
+ len
, "commands:\tcrt_enable, crt_disable\n");
1915 if (video_supported
== TPACPI_VIDEO_NEW
)
1916 len
+= sprintf(p
+ len
, "commands:\tdvi_enable, dvi_disable\n");
1917 len
+= sprintf(p
+ len
, "commands:\tauto_enable, auto_disable\n");
1918 len
+= sprintf(p
+ len
, "commands:\tvideo_switch, expand_toggle\n");
1923 static int video_write(char *buf
)
1926 int enable
, disable
, status
;
1929 if (video_supported
== TPACPI_VIDEO_NONE
)
1935 while ((cmd
= next_cmd(&buf
))) {
1936 if (strlencmp(cmd
, "lcd_enable") == 0) {
1937 enable
|= TP_ACPI_VIDEO_S_LCD
;
1938 } else if (strlencmp(cmd
, "lcd_disable") == 0) {
1939 disable
|= TP_ACPI_VIDEO_S_LCD
;
1940 } else if (strlencmp(cmd
, "crt_enable") == 0) {
1941 enable
|= TP_ACPI_VIDEO_S_CRT
;
1942 } else if (strlencmp(cmd
, "crt_disable") == 0) {
1943 disable
|= TP_ACPI_VIDEO_S_CRT
;
1944 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
1945 strlencmp(cmd
, "dvi_enable") == 0) {
1946 enable
|= TP_ACPI_VIDEO_S_DVI
;
1947 } else if (video_supported
== TPACPI_VIDEO_NEW
&&
1948 strlencmp(cmd
, "dvi_disable") == 0) {
1949 disable
|= TP_ACPI_VIDEO_S_DVI
;
1950 } else if (strlencmp(cmd
, "auto_enable") == 0) {
1951 res
= video_autosw_set(1);
1954 } else if (strlencmp(cmd
, "auto_disable") == 0) {
1955 res
= video_autosw_set(0);
1958 } else if (strlencmp(cmd
, "video_switch") == 0) {
1959 res
= video_outputsw_cycle();
1962 } else if (strlencmp(cmd
, "expand_toggle") == 0) {
1963 res
= video_expand_toggle();
1970 if (enable
|| disable
) {
1971 status
= video_outputsw_get();
1974 res
= video_outputsw_set((status
& ~disable
) | enable
);
1982 static struct ibm_struct video_driver_data
= {
1985 .write
= video_write
,
1989 /*************************************************************************
1990 * Light (thinklight) subdriver
1993 IBM_HANDLE(lght
, root
, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
1994 IBM_HANDLE(ledb
, ec
, "LEDB"); /* G4x */
1996 static int __init
light_init(struct ibm_init_struct
*iibm
)
1998 vdbg_printk(TPACPI_DBG_INIT
, "initializing light subdriver\n");
2000 IBM_ACPIHANDLE_INIT(ledb
);
2001 IBM_ACPIHANDLE_INIT(lght
);
2002 IBM_ACPIHANDLE_INIT(cmos
);
2004 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
2005 tp_features
.light
= (cmos_handle
|| lght_handle
) && !ledb_handle
;
2007 if (tp_features
.light
)
2008 /* light status not supported on
2009 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
2010 tp_features
.light_status
=
2011 acpi_evalf(ec_handle
, NULL
, "KBLT", "qv");
2013 vdbg_printk(TPACPI_DBG_INIT
, "light is %s\n",
2014 str_supported(tp_features
.light
));
2016 return (tp_features
.light
)? 0 : 1;
2019 static int light_read(char *p
)
2024 if (!tp_features
.light
) {
2025 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
2026 } else if (!tp_features
.light_status
) {
2027 len
+= sprintf(p
+ len
, "status:\t\tunknown\n");
2028 len
+= sprintf(p
+ len
, "commands:\ton, off\n");
2030 if (!acpi_evalf(ec_handle
, &status
, "KBLT", "d"))
2032 len
+= sprintf(p
+ len
, "status:\t\t%s\n", onoff(status
, 0));
2033 len
+= sprintf(p
+ len
, "commands:\ton, off\n");
2039 static int light_write(char *buf
)
2041 int cmos_cmd
, lght_cmd
;
2045 if (!tp_features
.light
)
2048 while ((cmd
= next_cmd(&buf
))) {
2049 if (strlencmp(cmd
, "on") == 0) {
2052 } else if (strlencmp(cmd
, "off") == 0) {
2058 success
= cmos_handle
?
2059 acpi_evalf(cmos_handle
, NULL
, NULL
, "vd", cmos_cmd
) :
2060 acpi_evalf(lght_handle
, NULL
, NULL
, "vd", lght_cmd
);
2068 static struct ibm_struct light_driver_data
= {
2071 .write
= light_write
,
2074 /*************************************************************************
2078 #ifdef CONFIG_THINKPAD_ACPI_DOCK
2080 IBM_HANDLE(dock
, root
, "\\_SB.GDCK", /* X30, X31, X40 */
2081 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
2082 "\\_SB.PCI0.PCI1.DOCK", /* all others */
2083 "\\_SB.PCI.ISA.SLCE", /* 570 */
2084 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
2086 /* don't list other alternatives as we install a notify handler on the 570 */
2087 IBM_HANDLE(pci
, root
, "\\_SB.PCI"); /* 570 */
2089 static const struct acpi_device_id ibm_pci_device_ids
[] = {
2090 {PCI_ROOT_HID_STRING
, 0},
2094 static struct tp_acpi_drv_struct ibm_dock_acpidriver
[2] = {
2096 .notify
= dock_notify
,
2097 .handle
= &dock_handle
,
2098 .type
= ACPI_SYSTEM_NOTIFY
,
2101 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
2102 * We just use it to get notifications of dock hotplug
2103 * in very old thinkpads */
2104 .hid
= ibm_pci_device_ids
,
2105 .notify
= dock_notify
,
2106 .handle
= &pci_handle
,
2107 .type
= ACPI_SYSTEM_NOTIFY
,
2111 static struct ibm_struct dock_driver_data
[2] = {
2115 .write
= dock_write
,
2116 .acpi
= &ibm_dock_acpidriver
[0],
2120 .acpi
= &ibm_dock_acpidriver
[1],
2124 #define dock_docked() (_sta(dock_handle) & 1)
2126 static int __init
dock_init(struct ibm_init_struct
*iibm
)
2128 vdbg_printk(TPACPI_DBG_INIT
, "initializing dock subdriver\n");
2130 IBM_ACPIHANDLE_INIT(dock
);
2132 vdbg_printk(TPACPI_DBG_INIT
, "dock is %s\n",
2133 str_supported(dock_handle
!= NULL
));
2135 return (dock_handle
)? 0 : 1;
2138 static int __init
dock_init2(struct ibm_init_struct
*iibm
)
2142 vdbg_printk(TPACPI_DBG_INIT
, "initializing dock subdriver part 2\n");
2144 if (dock_driver_data
[0].flags
.acpi_driver_registered
&&
2145 dock_driver_data
[0].flags
.acpi_notify_installed
) {
2146 IBM_ACPIHANDLE_INIT(pci
);
2147 dock2_needed
= (pci_handle
!= NULL
);
2148 vdbg_printk(TPACPI_DBG_INIT
,
2149 "dock PCI handler for the TP 570 is %s\n",
2150 str_supported(dock2_needed
));
2152 vdbg_printk(TPACPI_DBG_INIT
,
2153 "dock subdriver part 2 not required\n");
2157 return (dock2_needed
)? 0 : 1;
2160 static void dock_notify(struct ibm_struct
*ibm
, u32 event
)
2162 int docked
= dock_docked();
2163 int pci
= ibm
->acpi
->hid
&& ibm
->acpi
->device
&&
2164 acpi_match_device_ids(ibm
->acpi
->device
, ibm_pci_device_ids
);
2166 if (event
== 1 && !pci
) /* 570 */
2167 acpi_bus_generate_event(ibm
->acpi
->device
, event
, 1); /* button */
2168 else if (event
== 1 && pci
) /* 570 */
2169 acpi_bus_generate_event(ibm
->acpi
->device
, event
, 3); /* dock */
2170 else if (event
== 3 && docked
)
2171 acpi_bus_generate_event(ibm
->acpi
->device
, event
, 1); /* button */
2172 else if (event
== 3 && !docked
)
2173 acpi_bus_generate_event(ibm
->acpi
->device
, event
, 2); /* undock */
2174 else if (event
== 0 && docked
)
2175 acpi_bus_generate_event(ibm
->acpi
->device
, event
, 3); /* dock */
2177 printk(IBM_ERR
"unknown dock event %d, status %d\n",
2178 event
, _sta(dock_handle
));
2179 acpi_bus_generate_event(ibm
->acpi
->device
, event
, 0); /* unknown */
2183 static int dock_read(char *p
)
2186 int docked
= dock_docked();
2189 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
2191 len
+= sprintf(p
+ len
, "status:\t\tundocked\n");
2193 len
+= sprintf(p
+ len
, "status:\t\tdocked\n");
2194 len
+= sprintf(p
+ len
, "commands:\tdock, undock\n");
2200 static int dock_write(char *buf
)
2207 while ((cmd
= next_cmd(&buf
))) {
2208 if (strlencmp(cmd
, "undock") == 0) {
2209 if (!acpi_evalf(dock_handle
, NULL
, "_DCK", "vd", 0) ||
2210 !acpi_evalf(dock_handle
, NULL
, "_EJ0", "vd", 1))
2212 } else if (strlencmp(cmd
, "dock") == 0) {
2213 if (!acpi_evalf(dock_handle
, NULL
, "_DCK", "vd", 1))
2222 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
2224 /*************************************************************************
2228 #ifdef CONFIG_THINKPAD_ACPI_BAY
2229 IBM_HANDLE(bay
, root
, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
2230 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
2231 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
2232 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
2233 ); /* A21e, R30, R31 */
2234 IBM_HANDLE(bay_ej
, bay
, "_EJ3", /* 600e/x, A2xm/p, A3x */
2235 "_EJ0", /* all others */
2236 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
2237 IBM_HANDLE(bay2
, root
, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
2238 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
2240 IBM_HANDLE(bay2_ej
, bay2
, "_EJ3", /* 600e/x, 770e, A3x */
2244 static int __init
bay_init(struct ibm_init_struct
*iibm
)
2246 vdbg_printk(TPACPI_DBG_INIT
, "initializing bay subdriver\n");
2248 IBM_ACPIHANDLE_INIT(bay
);
2250 IBM_ACPIHANDLE_INIT(bay_ej
);
2251 IBM_ACPIHANDLE_INIT(bay2
);
2253 IBM_ACPIHANDLE_INIT(bay2_ej
);
2255 tp_features
.bay_status
= bay_handle
&&
2256 acpi_evalf(bay_handle
, NULL
, "_STA", "qv");
2257 tp_features
.bay_status2
= bay2_handle
&&
2258 acpi_evalf(bay2_handle
, NULL
, "_STA", "qv");
2260 tp_features
.bay_eject
= bay_handle
&& bay_ej_handle
&&
2261 (strlencmp(bay_ej_path
, "_EJ0") == 0 || experimental
);
2262 tp_features
.bay_eject2
= bay2_handle
&& bay2_ej_handle
&&
2263 (strlencmp(bay2_ej_path
, "_EJ0") == 0 || experimental
);
2265 vdbg_printk(TPACPI_DBG_INIT
,
2266 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
2267 str_supported(tp_features
.bay_status
),
2268 str_supported(tp_features
.bay_eject
),
2269 str_supported(tp_features
.bay_status2
),
2270 str_supported(tp_features
.bay_eject2
));
2272 return (tp_features
.bay_status
|| tp_features
.bay_eject
||
2273 tp_features
.bay_status2
|| tp_features
.bay_eject2
)? 0 : 1;
2276 static void bay_notify(struct ibm_struct
*ibm
, u32 event
)
2278 acpi_bus_generate_event(ibm
->acpi
->device
, event
, 0);
2281 #define bay_occupied(b) (_sta(b##_handle) & 1)
2283 static int bay_read(char *p
)
2286 int occupied
= bay_occupied(bay
);
2287 int occupied2
= bay_occupied(bay2
);
2290 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
2291 tp_features
.bay_status
?
2292 (occupied
? "occupied" : "unoccupied") :
2294 if (tp_features
.bay_status2
)
2295 len
+= sprintf(p
+ len
, "status2:\t%s\n", occupied2
?
2296 "occupied" : "unoccupied");
2298 eject
= tp_features
.bay_eject
&& occupied
;
2299 eject2
= tp_features
.bay_eject2
&& occupied2
;
2301 if (eject
&& eject2
)
2302 len
+= sprintf(p
+ len
, "commands:\teject, eject2\n");
2304 len
+= sprintf(p
+ len
, "commands:\teject\n");
2306 len
+= sprintf(p
+ len
, "commands:\teject2\n");
2311 static int bay_write(char *buf
)
2315 if (!tp_features
.bay_eject
&& !tp_features
.bay_eject2
)
2318 while ((cmd
= next_cmd(&buf
))) {
2319 if (tp_features
.bay_eject
&& strlencmp(cmd
, "eject") == 0) {
2320 if (!acpi_evalf(bay_ej_handle
, NULL
, NULL
, "vd", 1))
2322 } else if (tp_features
.bay_eject2
&&
2323 strlencmp(cmd
, "eject2") == 0) {
2324 if (!acpi_evalf(bay2_ej_handle
, NULL
, NULL
, "vd", 1))
2333 static struct tp_acpi_drv_struct ibm_bay_acpidriver
= {
2334 .notify
= bay_notify
,
2335 .handle
= &bay_handle
,
2336 .type
= ACPI_SYSTEM_NOTIFY
,
2339 static struct ibm_struct bay_driver_data
= {
2343 .acpi
= &ibm_bay_acpidriver
,
2346 #endif /* CONFIG_THINKPAD_ACPI_BAY */
2348 /*************************************************************************
2352 /* sysfs cmos_command -------------------------------------------------- */
2353 static ssize_t
cmos_command_store(struct device
*dev
,
2354 struct device_attribute
*attr
,
2355 const char *buf
, size_t count
)
2357 unsigned long cmos_cmd
;
2360 if (parse_strtoul(buf
, 21, &cmos_cmd
))
2363 res
= issue_thinkpad_cmos_command(cmos_cmd
);
2364 return (res
)? res
: count
;
2367 static struct device_attribute dev_attr_cmos_command
=
2368 __ATTR(cmos_command
, S_IWUSR
, NULL
, cmos_command_store
);
2370 /* --------------------------------------------------------------------- */
2372 static int __init
cmos_init(struct ibm_init_struct
*iibm
)
2376 vdbg_printk(TPACPI_DBG_INIT
,
2377 "initializing cmos commands subdriver\n");
2379 IBM_ACPIHANDLE_INIT(cmos
);
2381 vdbg_printk(TPACPI_DBG_INIT
, "cmos commands are %s\n",
2382 str_supported(cmos_handle
!= NULL
));
2384 res
= device_create_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
2388 return (cmos_handle
)? 0 : 1;
2391 static void cmos_exit(void)
2393 device_remove_file(&tpacpi_pdev
->dev
, &dev_attr_cmos_command
);
2396 static int cmos_read(char *p
)
2400 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2401 R30, R31, T20-22, X20-21 */
2403 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
2405 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
2406 len
+= sprintf(p
+ len
, "commands:\t<cmd> (<cmd> is 0-21)\n");
2412 static int cmos_write(char *buf
)
2417 while ((cmd
= next_cmd(&buf
))) {
2418 if (sscanf(cmd
, "%u", &cmos_cmd
) == 1 &&
2419 cmos_cmd
>= 0 && cmos_cmd
<= 21) {
2424 res
= issue_thinkpad_cmos_command(cmos_cmd
);
2432 static struct ibm_struct cmos_driver_data
= {
2435 .write
= cmos_write
,
2439 /*************************************************************************
2443 static enum led_access_mode led_supported
;
2445 IBM_HANDLE(led
, ec
, "SLED", /* 570 */
2446 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
2447 "LED", /* all others */
2450 static int __init
led_init(struct ibm_init_struct
*iibm
)
2452 vdbg_printk(TPACPI_DBG_INIT
, "initializing LED subdriver\n");
2454 IBM_ACPIHANDLE_INIT(led
);
2457 /* led not supported on R30, R31 */
2458 led_supported
= TPACPI_LED_NONE
;
2459 else if (strlencmp(led_path
, "SLED") == 0)
2461 led_supported
= TPACPI_LED_570
;
2462 else if (strlencmp(led_path
, "SYSL") == 0)
2463 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
2464 led_supported
= TPACPI_LED_OLD
;
2467 led_supported
= TPACPI_LED_NEW
;
2469 vdbg_printk(TPACPI_DBG_INIT
, "LED commands are %s, mode %d\n",
2470 str_supported(led_supported
), led_supported
);
2472 return (led_supported
!= TPACPI_LED_NONE
)? 0 : 1;
2475 #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
2477 static int led_read(char *p
)
2481 if (!led_supported
) {
2482 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
2485 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
2487 if (led_supported
== TPACPI_LED_570
) {
2490 for (i
= 0; i
< 8; i
++) {
2491 if (!acpi_evalf(ec_handle
,
2492 &status
, "GLED", "dd", 1 << i
))
2494 len
+= sprintf(p
+ len
, "%d:\t\t%s\n",
2495 i
, led_status(status
));
2499 len
+= sprintf(p
+ len
, "commands:\t"
2500 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
2505 /* off, on, blink */
2506 static const int led_sled_arg1
[] = { 0, 1, 3 };
2507 static const int led_exp_hlbl
[] = { 0, 0, 1 }; /* led# * */
2508 static const int led_exp_hlcl
[] = { 0, 1, 1 }; /* led# * */
2509 static const int led_led_arg1
[] = { 0, 0x80, 0xc0 };
2511 static int led_write(char *buf
)
2519 while ((cmd
= next_cmd(&buf
))) {
2520 if (sscanf(cmd
, "%d", &led
) != 1 || led
< 0 || led
> 7)
2523 if (strstr(cmd
, "off")) {
2525 } else if (strstr(cmd
, "on")) {
2527 } else if (strstr(cmd
, "blink")) {
2532 if (led_supported
== TPACPI_LED_570
) {
2535 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
2536 led
, led_sled_arg1
[ind
]))
2538 } else if (led_supported
== TPACPI_LED_OLD
) {
2539 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
2541 ret
= ec_write(TPACPI_LED_EC_HLMS
, led
);
2544 ec_write(TPACPI_LED_EC_HLBL
,
2545 led
* led_exp_hlbl
[ind
]);
2548 ec_write(TPACPI_LED_EC_HLCL
,
2549 led
* led_exp_hlcl
[ind
]);
2554 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
2555 led
, led_led_arg1
[ind
]))
2563 static struct ibm_struct led_driver_data
= {
2569 /*************************************************************************
2573 IBM_HANDLE(beep
, ec
, "BEEP"); /* all except R30, R31 */
2575 static int __init
beep_init(struct ibm_init_struct
*iibm
)
2577 vdbg_printk(TPACPI_DBG_INIT
, "initializing beep subdriver\n");
2579 IBM_ACPIHANDLE_INIT(beep
);
2581 vdbg_printk(TPACPI_DBG_INIT
, "beep is %s\n",
2582 str_supported(beep_handle
!= NULL
));
2584 return (beep_handle
)? 0 : 1;
2587 static int beep_read(char *p
)
2592 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
2594 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
2595 len
+= sprintf(p
+ len
, "commands:\t<cmd> (<cmd> is 0-17)\n");
2601 static int beep_write(char *buf
)
2609 while ((cmd
= next_cmd(&buf
))) {
2610 if (sscanf(cmd
, "%u", &beep_cmd
) == 1 &&
2611 beep_cmd
>= 0 && beep_cmd
<= 17) {
2615 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vdd", beep_cmd
, 0))
2622 static struct ibm_struct beep_driver_data
= {
2625 .write
= beep_write
,
2628 /*************************************************************************
2632 static enum thermal_access_mode thermal_read_mode
;
2634 /* sysfs temp##_input -------------------------------------------------- */
2636 static ssize_t
thermal_temp_input_show(struct device
*dev
,
2637 struct device_attribute
*attr
,
2640 struct sensor_device_attribute
*sensor_attr
=
2641 to_sensor_dev_attr(attr
);
2642 int idx
= sensor_attr
->index
;
2646 res
= thermal_get_sensor(idx
, &value
);
2649 if (value
== TP_EC_THERMAL_TMP_NA
* 1000)
2652 return snprintf(buf
, PAGE_SIZE
, "%d\n", value
);
2655 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
2656 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, thermal_temp_input_show, NULL, _idxB)
2658 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input
[] = {
2659 THERMAL_SENSOR_ATTR_TEMP(1, 0),
2660 THERMAL_SENSOR_ATTR_TEMP(2, 1),
2661 THERMAL_SENSOR_ATTR_TEMP(3, 2),
2662 THERMAL_SENSOR_ATTR_TEMP(4, 3),
2663 THERMAL_SENSOR_ATTR_TEMP(5, 4),
2664 THERMAL_SENSOR_ATTR_TEMP(6, 5),
2665 THERMAL_SENSOR_ATTR_TEMP(7, 6),
2666 THERMAL_SENSOR_ATTR_TEMP(8, 7),
2667 THERMAL_SENSOR_ATTR_TEMP(9, 8),
2668 THERMAL_SENSOR_ATTR_TEMP(10, 9),
2669 THERMAL_SENSOR_ATTR_TEMP(11, 10),
2670 THERMAL_SENSOR_ATTR_TEMP(12, 11),
2671 THERMAL_SENSOR_ATTR_TEMP(13, 12),
2672 THERMAL_SENSOR_ATTR_TEMP(14, 13),
2673 THERMAL_SENSOR_ATTR_TEMP(15, 14),
2674 THERMAL_SENSOR_ATTR_TEMP(16, 15),
2677 #define THERMAL_ATTRS(X) \
2678 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
2680 static struct attribute
*thermal_temp_input_attr
[] = {
2700 static const struct attribute_group thermal_temp_input16_group
= {
2701 .attrs
= thermal_temp_input_attr
2704 static const struct attribute_group thermal_temp_input8_group
= {
2705 .attrs
= &thermal_temp_input_attr
[8]
2708 #undef THERMAL_SENSOR_ATTR_TEMP
2709 #undef THERMAL_ATTRS
2711 /* --------------------------------------------------------------------- */
2713 static int __init
thermal_init(struct ibm_init_struct
*iibm
)
2720 vdbg_printk(TPACPI_DBG_INIT
, "initializing thermal subdriver\n");
2722 acpi_tmp7
= acpi_evalf(ec_handle
, NULL
, "TMP7", "qv");
2724 if (thinkpad_id
.ec_model
) {
2726 * Direct EC access mode: sensors at registers
2727 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
2728 * non-implemented, thermal sensors return 0x80 when
2733 for (i
= 0; i
< 8; i
++) {
2734 if (acpi_ec_read(TP_EC_THERMAL_TMP0
+ i
, &t
)) {
2740 if (acpi_ec_read(TP_EC_THERMAL_TMP8
+ i
, &t
)) {
2748 /* This is sheer paranoia, but we handle it anyway */
2751 "ThinkPad ACPI EC access misbehaving, "
2752 "falling back to ACPI TMPx access mode\n");
2753 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
2756 "ThinkPad ACPI EC access misbehaving, "
2757 "disabling thermal sensors access\n");
2758 thermal_read_mode
= TPACPI_THERMAL_NONE
;
2763 TPACPI_THERMAL_TPEC_16
: TPACPI_THERMAL_TPEC_8
;
2765 } else if (acpi_tmp7
) {
2766 if (acpi_evalf(ec_handle
, NULL
, "UPDT", "qv")) {
2767 /* 600e/x, 770e, 770x */
2768 thermal_read_mode
= TPACPI_THERMAL_ACPI_UPDT
;
2770 /* Standard ACPI TMPx access, max 8 sensors */
2771 thermal_read_mode
= TPACPI_THERMAL_ACPI_TMP07
;
2774 /* temperatures not supported on 570, G4x, R30, R31, R32 */
2775 thermal_read_mode
= TPACPI_THERMAL_NONE
;
2778 vdbg_printk(TPACPI_DBG_INIT
, "thermal is %s, mode %d\n",
2779 str_supported(thermal_read_mode
!= TPACPI_THERMAL_NONE
),
2782 switch(thermal_read_mode
) {
2783 case TPACPI_THERMAL_TPEC_16
:
2784 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
2785 &thermal_temp_input16_group
);
2789 case TPACPI_THERMAL_TPEC_8
:
2790 case TPACPI_THERMAL_ACPI_TMP07
:
2791 case TPACPI_THERMAL_ACPI_UPDT
:
2792 res
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
2793 &thermal_temp_input8_group
);
2797 case TPACPI_THERMAL_NONE
:
2805 static void thermal_exit(void)
2807 switch(thermal_read_mode
) {
2808 case TPACPI_THERMAL_TPEC_16
:
2809 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
2810 &thermal_temp_input16_group
);
2812 case TPACPI_THERMAL_TPEC_8
:
2813 case TPACPI_THERMAL_ACPI_TMP07
:
2814 case TPACPI_THERMAL_ACPI_UPDT
:
2815 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
,
2816 &thermal_temp_input16_group
);
2818 case TPACPI_THERMAL_NONE
:
2824 /* idx is zero-based */
2825 static int thermal_get_sensor(int idx
, s32
*value
)
2831 t
= TP_EC_THERMAL_TMP0
;
2833 switch (thermal_read_mode
) {
2834 #if TPACPI_MAX_THERMAL_SENSORS >= 16
2835 case TPACPI_THERMAL_TPEC_16
:
2836 if (idx
>= 8 && idx
<= 15) {
2837 t
= TP_EC_THERMAL_TMP8
;
2842 case TPACPI_THERMAL_TPEC_8
:
2844 if (!acpi_ec_read(t
+ idx
, &tmp
))
2846 *value
= tmp
* 1000;
2851 case TPACPI_THERMAL_ACPI_UPDT
:
2853 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
2854 if (!acpi_evalf(ec_handle
, NULL
, "UPDT", "v"))
2856 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
2858 *value
= (t
- 2732) * 100;
2863 case TPACPI_THERMAL_ACPI_TMP07
:
2865 snprintf(tmpi
, sizeof(tmpi
), "TMP%c", '0' + idx
);
2866 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
2868 if (t
> 127 || t
< -127)
2869 t
= TP_EC_THERMAL_TMP_NA
;
2875 case TPACPI_THERMAL_NONE
:
2883 static int thermal_get_sensors(struct ibm_thermal_sensors_struct
*s
)
2894 if (thermal_read_mode
== TPACPI_THERMAL_TPEC_16
)
2897 for(i
= 0 ; i
< n
; i
++) {
2898 res
= thermal_get_sensor(i
, &s
->temp
[i
]);
2906 static int thermal_read(char *p
)
2910 struct ibm_thermal_sensors_struct t
;
2912 n
= thermal_get_sensors(&t
);
2913 if (unlikely(n
< 0))
2916 len
+= sprintf(p
+ len
, "temperatures:\t");
2919 for (i
= 0; i
< (n
- 1); i
++)
2920 len
+= sprintf(p
+ len
, "%d ", t
.temp
[i
] / 1000);
2921 len
+= sprintf(p
+ len
, "%d\n", t
.temp
[i
] / 1000);
2923 len
+= sprintf(p
+ len
, "not supported\n");
2928 static struct ibm_struct thermal_driver_data
= {
2930 .read
= thermal_read
,
2931 .exit
= thermal_exit
,
2934 /*************************************************************************
2938 static u8 ecdump_regs
[256];
2940 static int ecdump_read(char *p
)
2946 len
+= sprintf(p
+ len
, "EC "
2947 " +00 +01 +02 +03 +04 +05 +06 +07"
2948 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
2949 for (i
= 0; i
< 256; i
+= 16) {
2950 len
+= sprintf(p
+ len
, "EC 0x%02x:", i
);
2951 for (j
= 0; j
< 16; j
++) {
2952 if (!acpi_ec_read(i
+ j
, &v
))
2954 if (v
!= ecdump_regs
[i
+ j
])
2955 len
+= sprintf(p
+ len
, " *%02x", v
);
2957 len
+= sprintf(p
+ len
, " %02x", v
);
2958 ecdump_regs
[i
+ j
] = v
;
2960 len
+= sprintf(p
+ len
, "\n");
2965 /* These are way too dangerous to advertise openly... */
2967 len
+= sprintf(p
+ len
, "commands:\t0x<offset> 0x<value>"
2968 " (<offset> is 00-ff, <value> is 00-ff)\n");
2969 len
+= sprintf(p
+ len
, "commands:\t0x<offset> <value> "
2970 " (<offset> is 00-ff, <value> is 0-255)\n");
2975 static int ecdump_write(char *buf
)
2980 while ((cmd
= next_cmd(&buf
))) {
2981 if (sscanf(cmd
, "0x%x 0x%x", &i
, &v
) == 2) {
2983 } else if (sscanf(cmd
, "0x%x %u", &i
, &v
) == 2) {
2987 if (i
>= 0 && i
< 256 && v
>= 0 && v
< 256) {
2988 if (!acpi_ec_write(i
, v
))
2997 static struct ibm_struct ecdump_driver_data
= {
2999 .read
= ecdump_read
,
3000 .write
= ecdump_write
,
3001 .flags
.experimental
= 1,
3004 /*************************************************************************
3005 * Backlight/brightness subdriver
3008 static struct backlight_device
*ibm_backlight_device
;
3010 static struct backlight_ops ibm_backlight_data
= {
3011 .get_brightness
= brightness_get
,
3012 .update_status
= brightness_update_status
,
3015 static struct mutex brightness_mutex
;
3017 static int __init
brightness_init(struct ibm_init_struct
*iibm
)
3021 vdbg_printk(TPACPI_DBG_INIT
, "initializing brightness subdriver\n");
3023 mutex_init(&brightness_mutex
);
3025 if (!brightness_mode
) {
3026 if (thinkpad_id
.vendor
== PCI_VENDOR_ID_LENOVO
)
3027 brightness_mode
= 2;
3029 brightness_mode
= 3;
3031 dbg_printk(TPACPI_DBG_INIT
, "selected brightness_mode=%d\n",
3035 if (brightness_mode
> 3)
3038 b
= brightness_get(NULL
);
3042 ibm_backlight_device
= backlight_device_register(
3043 TPACPI_BACKLIGHT_DEV_NAME
, NULL
, NULL
,
3044 &ibm_backlight_data
);
3045 if (IS_ERR(ibm_backlight_device
)) {
3046 printk(IBM_ERR
"Could not register backlight device\n");
3047 return PTR_ERR(ibm_backlight_device
);
3049 vdbg_printk(TPACPI_DBG_INIT
, "brightness is supported\n");
3051 ibm_backlight_device
->props
.max_brightness
= 7;
3052 ibm_backlight_device
->props
.brightness
= b
;
3053 backlight_update_status(ibm_backlight_device
);
3058 static void brightness_exit(void)
3060 if (ibm_backlight_device
) {
3061 vdbg_printk(TPACPI_DBG_EXIT
,
3062 "calling backlight_device_unregister()\n");
3063 backlight_device_unregister(ibm_backlight_device
);
3064 ibm_backlight_device
= NULL
;
3068 static int brightness_update_status(struct backlight_device
*bd
)
3070 return brightness_set(
3071 (bd
->props
.fb_blank
== FB_BLANK_UNBLANK
&&
3072 bd
->props
.power
== FB_BLANK_UNBLANK
) ?
3073 bd
->props
.brightness
: 0);
3077 * ThinkPads can read brightness from two places: EC 0x31, or
3078 * CMOS NVRAM byte 0x5E, bits 0-3.
3080 static int brightness_get(struct backlight_device
*bd
)
3082 u8 lec
= 0, lcmos
= 0, level
= 0;
3084 if (brightness_mode
& 1) {
3085 if (!acpi_ec_read(brightness_offset
, &lec
))
3090 if (brightness_mode
& 2) {
3091 lcmos
= (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS
)
3092 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS
)
3093 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS
;
3097 if (brightness_mode
== 3 && lec
!= lcmos
) {
3099 "CMOS NVRAM (%u) and EC (%u) do not agree "
3100 "on display brightness level\n",
3101 (unsigned int) lcmos
,
3102 (unsigned int) lec
);
3109 static int brightness_set(int value
)
3111 int cmos_cmd
, inc
, i
, res
;
3117 res
= mutex_lock_interruptible(&brightness_mutex
);
3121 current_value
= brightness_get(NULL
);
3122 if (current_value
< 0) {
3123 res
= current_value
;
3127 cmos_cmd
= value
> current_value
?
3128 TP_CMOS_BRIGHTNESS_UP
:
3129 TP_CMOS_BRIGHTNESS_DOWN
;
3130 inc
= value
> current_value
? 1 : -1;
3133 for (i
= current_value
; i
!= value
; i
+= inc
) {
3134 if ((brightness_mode
& 2) &&
3135 issue_thinkpad_cmos_command(cmos_cmd
)) {
3139 if ((brightness_mode
& 1) &&
3140 !acpi_ec_write(brightness_offset
, i
+ inc
)) {
3147 mutex_unlock(&brightness_mutex
);
3151 static int brightness_read(char *p
)
3156 if ((level
= brightness_get(NULL
)) < 0) {
3157 len
+= sprintf(p
+ len
, "level:\t\tunreadable\n");
3159 len
+= sprintf(p
+ len
, "level:\t\t%d\n", level
& 0x7);
3160 len
+= sprintf(p
+ len
, "commands:\tup, down\n");
3161 len
+= sprintf(p
+ len
, "commands:\tlevel <level>"
3162 " (<level> is 0-7)\n");
3168 static int brightness_write(char *buf
)
3174 while ((cmd
= next_cmd(&buf
))) {
3175 if ((level
= brightness_get(NULL
)) < 0)
3179 if (strlencmp(cmd
, "up") == 0) {
3180 new_level
= level
== 7 ? 7 : level
+ 1;
3181 } else if (strlencmp(cmd
, "down") == 0) {
3182 new_level
= level
== 0 ? 0 : level
- 1;
3183 } else if (sscanf(cmd
, "level %d", &new_level
) == 1 &&
3184 new_level
>= 0 && new_level
<= 7) {
3189 brightness_set(new_level
);
3195 static struct ibm_struct brightness_driver_data
= {
3196 .name
= "brightness",
3197 .read
= brightness_read
,
3198 .write
= brightness_write
,
3199 .exit
= brightness_exit
,
3202 /*************************************************************************
3206 static int volume_read(char *p
)
3211 if (!acpi_ec_read(volume_offset
, &level
)) {
3212 len
+= sprintf(p
+ len
, "level:\t\tunreadable\n");
3214 len
+= sprintf(p
+ len
, "level:\t\t%d\n", level
& 0xf);
3215 len
+= sprintf(p
+ len
, "mute:\t\t%s\n", onoff(level
, 6));
3216 len
+= sprintf(p
+ len
, "commands:\tup, down, mute\n");
3217 len
+= sprintf(p
+ len
, "commands:\tlevel <level>"
3218 " (<level> is 0-15)\n");
3224 static int volume_write(char *buf
)
3226 int cmos_cmd
, inc
, i
;
3228 int new_level
, new_mute
;
3231 while ((cmd
= next_cmd(&buf
))) {
3232 if (!acpi_ec_read(volume_offset
, &level
))
3234 new_mute
= mute
= level
& 0x40;
3235 new_level
= level
= level
& 0xf;
3237 if (strlencmp(cmd
, "up") == 0) {
3241 new_level
= level
== 15 ? 15 : level
+ 1;
3242 } else if (strlencmp(cmd
, "down") == 0) {
3246 new_level
= level
== 0 ? 0 : level
- 1;
3247 } else if (sscanf(cmd
, "level %d", &new_level
) == 1 &&
3248 new_level
>= 0 && new_level
<= 15) {
3250 } else if (strlencmp(cmd
, "mute") == 0) {
3255 if (new_level
!= level
) { /* mute doesn't change */
3256 cmos_cmd
= new_level
> level
? TP_CMOS_VOLUME_UP
: TP_CMOS_VOLUME_DOWN
;
3257 inc
= new_level
> level
? 1 : -1;
3259 if (mute
&& (issue_thinkpad_cmos_command(cmos_cmd
) ||
3260 !acpi_ec_write(volume_offset
, level
)))
3263 for (i
= level
; i
!= new_level
; i
+= inc
)
3264 if (issue_thinkpad_cmos_command(cmos_cmd
) ||
3265 !acpi_ec_write(volume_offset
, i
+ inc
))
3268 if (mute
&& (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE
) ||
3269 !acpi_ec_write(volume_offset
,
3274 if (new_mute
!= mute
) { /* level doesn't change */
3275 cmos_cmd
= new_mute
? TP_CMOS_VOLUME_MUTE
: TP_CMOS_VOLUME_UP
;
3277 if (issue_thinkpad_cmos_command(cmos_cmd
) ||
3278 !acpi_ec_write(volume_offset
, level
+ new_mute
))
3286 static struct ibm_struct volume_driver_data
= {
3288 .read
= volume_read
,
3289 .write
= volume_write
,
3292 /*************************************************************************
3299 * TPACPI_FAN_RD_ACPI_GFAN:
3300 * ACPI GFAN method: returns fan level
3302 * see TPACPI_FAN_WR_ACPI_SFAN
3303 * EC 0x2f (HFSP) not available if GFAN exists
3305 * TPACPI_FAN_WR_ACPI_SFAN:
3306 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
3308 * EC 0x2f (HFSP) might be available *for reading*, but do not use
3311 * TPACPI_FAN_WR_TPEC:
3312 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
3313 * Supported on almost all ThinkPads
3315 * Fan speed changes of any sort (including those caused by the
3316 * disengaged mode) are usually done slowly by the firmware as the
3317 * maximum ammount of fan duty cycle change per second seems to be
3320 * Reading is not available if GFAN exists.
3321 * Writing is not available if SFAN exists.
3324 * 7 automatic mode engaged;
3325 * (default operation mode of the ThinkPad)
3326 * fan level is ignored in this mode.
3327 * 6 full speed mode (takes precedence over bit 7);
3328 * not available on all thinkpads. May disable
3329 * the tachometer while the fan controller ramps up
3330 * the speed (which can take up to a few *minutes*).
3331 * Speeds up fan to 100% duty-cycle, which is far above
3332 * the standard RPM levels. It is not impossible that
3333 * it could cause hardware damage.
3334 * 5-3 unused in some models. Extra bits for fan level
3335 * in others, but still useless as all values above
3336 * 7 map to the same speed as level 7 in these models.
3337 * 2-0 fan level (0..7 usually)
3339 * 0x07 = max (set when temperatures critical)
3340 * Some ThinkPads may have other levels, see
3341 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
3343 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
3344 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
3345 * does so, its initial value is meaningless (0x07).
3347 * For firmware bugs, refer to:
3348 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3352 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
3353 * Main fan tachometer reading (in RPM)
3355 * This register is present on all ThinkPads with a new-style EC, and
3356 * it is known not to be present on the A21m/e, and T22, as there is
3357 * something else in offset 0x84 according to the ACPI DSDT. Other
3358 * ThinkPads from this same time period (and earlier) probably lack the
3359 * tachometer as well.
3361 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
3362 * was never fixed by IBM to report the EC firmware version string
3363 * probably support the tachometer (like the early X models), so
3364 * detecting it is quite hard. We need more data to know for sure.
3366 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
3369 * FIRMWARE BUG: may go stale while the EC is switching to full speed
3372 * For firmware bugs, refer to:
3373 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
3375 * TPACPI_FAN_WR_ACPI_FANS:
3376 * ThinkPad X31, X40, X41. Not available in the X60.
3378 * FANS ACPI handle: takes three arguments: low speed, medium speed,
3379 * high speed. ACPI DSDT seems to map these three speeds to levels
3380 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
3381 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
3383 * The speeds are stored on handles
3384 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
3386 * There are three default speed sets, acessible as handles:
3387 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
3389 * ACPI DSDT switches which set is in use depending on various
3392 * TPACPI_FAN_WR_TPEC is also available and should be used to
3393 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
3394 * but the ACPI tables just mention level 7.
3397 static enum fan_status_access_mode fan_status_access_mode
;
3398 static enum fan_control_access_mode fan_control_access_mode
;
3399 static enum fan_control_commands fan_control_commands
;
3401 static u8 fan_control_initial_status
;
3402 static u8 fan_control_desired_level
;
3404 static void fan_watchdog_fire(struct work_struct
*ignored
);
3405 static int fan_watchdog_maxinterval
;
3406 static DECLARE_DELAYED_WORK(fan_watchdog_task
, fan_watchdog_fire
);
3408 IBM_HANDLE(fans
, ec
, "FANS"); /* X31, X40, X41 */
3409 IBM_HANDLE(gfan
, ec
, "GFAN", /* 570 */
3410 "\\FSPD", /* 600e/x, 770e, 770x */
3412 IBM_HANDLE(sfan
, ec
, "SFAN", /* 570 */
3413 "JFNS", /* 770x-JL */
3417 * SYSFS fan layout: hwmon compatible (device)
3420 * 0: "disengaged" mode
3422 * 2: native EC "auto" mode (recommended, hardware default)
3424 * pwm*: set speed in manual mode, ignored otherwise.
3425 * 0 is level 0; 255 is level 7. Intermediate points done with linear
3428 * fan*_input: tachometer reading, RPM
3431 * SYSFS fan layout: extensions
3433 * fan_watchdog (driver):
3434 * fan watchdog interval in seconds, 0 disables (default), max 120
3437 /* sysfs fan pwm1_enable ----------------------------------------------- */
3438 static ssize_t
fan_pwm1_enable_show(struct device
*dev
,
3439 struct device_attribute
*attr
,
3445 res
= fan_get_status_safe(&status
);
3449 if (unlikely(tp_features
.fan_ctrl_status_undef
)) {
3450 if (status
!= fan_control_initial_status
) {
3451 tp_features
.fan_ctrl_status_undef
= 0;
3453 /* Return most likely status. In fact, it
3454 * might be the only possible status */
3455 status
= TP_EC_FAN_AUTO
;
3459 if (status
& TP_EC_FAN_FULLSPEED
) {
3461 } else if (status
& TP_EC_FAN_AUTO
) {
3466 return snprintf(buf
, PAGE_SIZE
, "%d\n", mode
);
3469 static ssize_t
fan_pwm1_enable_store(struct device
*dev
,
3470 struct device_attribute
*attr
,
3471 const char *buf
, size_t count
)
3476 if (parse_strtoul(buf
, 2, &t
))
3481 level
= TP_EC_FAN_FULLSPEED
;
3484 level
= TPACPI_FAN_LAST_LEVEL
;
3487 level
= TP_EC_FAN_AUTO
;
3490 /* reserved for software-controlled auto mode */
3496 res
= fan_set_level_safe(level
);
3502 fan_watchdog_reset();
3507 static struct device_attribute dev_attr_fan_pwm1_enable
=
3508 __ATTR(pwm1_enable
, S_IWUSR
| S_IRUGO
,
3509 fan_pwm1_enable_show
, fan_pwm1_enable_store
);
3511 /* sysfs fan pwm1 ------------------------------------------------------ */
3512 static ssize_t
fan_pwm1_show(struct device
*dev
,
3513 struct device_attribute
*attr
,
3519 res
= fan_get_status_safe(&status
);
3523 if (unlikely(tp_features
.fan_ctrl_status_undef
)) {
3524 if (status
!= fan_control_initial_status
) {
3525 tp_features
.fan_ctrl_status_undef
= 0;
3527 status
= TP_EC_FAN_AUTO
;
3532 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) != 0)
3533 status
= fan_control_desired_level
;
3538 return snprintf(buf
, PAGE_SIZE
, "%u\n", (status
* 255) / 7);
3541 static ssize_t
fan_pwm1_store(struct device
*dev
,
3542 struct device_attribute
*attr
,
3543 const char *buf
, size_t count
)
3547 u8 status
, newlevel
;
3549 if (parse_strtoul(buf
, 255, &s
))
3552 /* scale down from 0-255 to 0-7 */
3553 newlevel
= (s
>> 5) & 0x07;
3555 rc
= mutex_lock_interruptible(&fan_mutex
);
3559 rc
= fan_get_status(&status
);
3560 if (!rc
&& (status
&
3561 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
3562 rc
= fan_set_level(newlevel
);
3566 fan_update_desired_level(newlevel
);
3567 fan_watchdog_reset();
3571 mutex_unlock(&fan_mutex
);
3572 return (rc
)? rc
: count
;
3575 static struct device_attribute dev_attr_fan_pwm1
=
3576 __ATTR(pwm1
, S_IWUSR
| S_IRUGO
,
3577 fan_pwm1_show
, fan_pwm1_store
);
3579 /* sysfs fan fan1_input ------------------------------------------------ */
3580 static ssize_t
fan_fan1_input_show(struct device
*dev
,
3581 struct device_attribute
*attr
,
3587 res
= fan_get_speed(&speed
);
3591 return snprintf(buf
, PAGE_SIZE
, "%u\n", speed
);
3594 static struct device_attribute dev_attr_fan_fan1_input
=
3595 __ATTR(fan1_input
, S_IRUGO
,
3596 fan_fan1_input_show
, NULL
);
3598 /* sysfs fan fan_watchdog (driver) ------------------------------------- */
3599 static ssize_t
fan_fan_watchdog_show(struct device_driver
*drv
,
3602 return snprintf(buf
, PAGE_SIZE
, "%u\n", fan_watchdog_maxinterval
);
3605 static ssize_t
fan_fan_watchdog_store(struct device_driver
*drv
,
3606 const char *buf
, size_t count
)
3610 if (parse_strtoul(buf
, 120, &t
))
3613 if (!fan_control_allowed
)
3616 fan_watchdog_maxinterval
= t
;
3617 fan_watchdog_reset();
3622 static DRIVER_ATTR(fan_watchdog
, S_IWUSR
| S_IRUGO
,
3623 fan_fan_watchdog_show
, fan_fan_watchdog_store
);
3625 /* --------------------------------------------------------------------- */
3626 static struct attribute
*fan_attributes
[] = {
3627 &dev_attr_fan_pwm1_enable
.attr
, &dev_attr_fan_pwm1
.attr
,
3628 &dev_attr_fan_fan1_input
.attr
,
3632 static const struct attribute_group fan_attr_group
= {
3633 .attrs
= fan_attributes
,
3636 static int __init
fan_init(struct ibm_init_struct
*iibm
)
3640 vdbg_printk(TPACPI_DBG_INIT
, "initializing fan subdriver\n");
3642 mutex_init(&fan_mutex
);
3643 fan_status_access_mode
= TPACPI_FAN_NONE
;
3644 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
3645 fan_control_commands
= 0;
3646 fan_watchdog_maxinterval
= 0;
3647 tp_features
.fan_ctrl_status_undef
= 0;
3648 fan_control_desired_level
= 7;
3650 IBM_ACPIHANDLE_INIT(fans
);
3651 IBM_ACPIHANDLE_INIT(gfan
);
3652 IBM_ACPIHANDLE_INIT(sfan
);
3655 /* 570, 600e/x, 770e, 770x */
3656 fan_status_access_mode
= TPACPI_FAN_RD_ACPI_GFAN
;
3658 /* all other ThinkPads: note that even old-style
3659 * ThinkPad ECs supports the fan control register */
3660 if (likely(acpi_ec_read(fan_status_offset
,
3661 &fan_control_initial_status
))) {
3662 fan_status_access_mode
= TPACPI_FAN_RD_TPEC
;
3664 /* In some ThinkPads, neither the EC nor the ACPI
3665 * DSDT initialize the fan status, and it ends up
3666 * being set to 0x07 when it *could* be either
3669 * Enable for TP-1Y (T43), TP-78 (R51e),
3670 * TP-76 (R52), TP-70 (T43, R52), which are known
3672 if (fan_control_initial_status
== 0x07) {
3673 switch (thinkpad_id
.ec_model
) {
3674 case 0x5931: /* TP-1Y */
3675 case 0x3837: /* TP-78 */
3676 case 0x3637: /* TP-76 */
3677 case 0x3037: /* TP-70 */
3679 "fan_init: initial fan status is "
3680 "unknown, assuming it is in auto "
3682 tp_features
.fan_ctrl_status_undef
= 1;
3688 "ThinkPad ACPI EC access misbehaving, "
3689 "fan status and control unavailable\n");
3696 fan_control_access_mode
= TPACPI_FAN_WR_ACPI_SFAN
;
3697 fan_control_commands
|=
3698 TPACPI_FAN_CMD_LEVEL
| TPACPI_FAN_CMD_ENABLE
;
3701 /* gfan without sfan means no fan control */
3702 /* all other models implement TP EC 0x2f control */
3706 fan_control_access_mode
=
3707 TPACPI_FAN_WR_ACPI_FANS
;
3708 fan_control_commands
|=
3709 TPACPI_FAN_CMD_SPEED
|
3710 TPACPI_FAN_CMD_LEVEL
|
3711 TPACPI_FAN_CMD_ENABLE
;
3713 fan_control_access_mode
= TPACPI_FAN_WR_TPEC
;
3714 fan_control_commands
|=
3715 TPACPI_FAN_CMD_LEVEL
|
3716 TPACPI_FAN_CMD_ENABLE
;
3721 vdbg_printk(TPACPI_DBG_INIT
, "fan is %s, modes %d, %d\n",
3722 str_supported(fan_status_access_mode
!= TPACPI_FAN_NONE
||
3723 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
),
3724 fan_status_access_mode
, fan_control_access_mode
);
3726 /* fan control master switch */
3727 if (!fan_control_allowed
) {
3728 fan_control_access_mode
= TPACPI_FAN_WR_NONE
;
3729 fan_control_commands
= 0;
3730 dbg_printk(TPACPI_DBG_INIT
,
3731 "fan control features disabled by parameter\n");
3734 /* update fan_control_desired_level */
3735 if (fan_status_access_mode
!= TPACPI_FAN_NONE
)
3736 fan_get_status_safe(NULL
);
3738 if (fan_status_access_mode
!= TPACPI_FAN_NONE
||
3739 fan_control_access_mode
!= TPACPI_FAN_WR_NONE
) {
3740 rc
= sysfs_create_group(&tpacpi_pdev
->dev
.kobj
,
3743 rc
= driver_create_file(&tpacpi_pdriver
.driver
,
3744 &driver_attr_fan_watchdog
);
3753 * Call with fan_mutex held
3755 static void fan_update_desired_level(u8 status
)
3758 (TP_EC_FAN_AUTO
| TP_EC_FAN_FULLSPEED
)) == 0) {
3760 fan_control_desired_level
= 7;
3762 fan_control_desired_level
= status
;
3766 static int fan_get_status(u8
*status
)
3771 * Add TPACPI_FAN_RD_ACPI_FANS ? */
3773 switch (fan_status_access_mode
) {
3774 case TPACPI_FAN_RD_ACPI_GFAN
:
3775 /* 570, 600e/x, 770e, 770x */
3777 if (unlikely(!acpi_evalf(gfan_handle
, &s
, NULL
, "d")))
3785 case TPACPI_FAN_RD_TPEC
:
3786 /* all except 570, 600e/x, 770e, 770x */
3787 if (unlikely(!acpi_ec_read(fan_status_offset
, &s
)))
3802 static int fan_get_status_safe(u8
*status
)
3807 rc
= mutex_lock_interruptible(&fan_mutex
);
3810 rc
= fan_get_status(&s
);
3812 fan_update_desired_level(s
);
3813 mutex_unlock(&fan_mutex
);
3821 static void fan_exit(void)
3823 vdbg_printk(TPACPI_DBG_EXIT
, "cancelling any pending fan watchdog tasks\n");
3825 /* FIXME: can we really do this unconditionally? */
3826 sysfs_remove_group(&tpacpi_pdev
->dev
.kobj
, &fan_attr_group
);
3827 driver_remove_file(&tpacpi_pdriver
.driver
, &driver_attr_fan_watchdog
);
3829 cancel_delayed_work(&fan_watchdog_task
);
3830 flush_scheduled_work();
3833 static int fan_get_speed(unsigned int *speed
)
3837 switch (fan_status_access_mode
) {
3838 case TPACPI_FAN_RD_TPEC
:
3839 /* all except 570, 600e/x, 770e, 770x */
3840 if (unlikely(!acpi_ec_read(fan_rpm_offset
, &lo
) ||
3841 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
)))
3845 *speed
= (hi
<< 8) | lo
;
3856 static void fan_watchdog_fire(struct work_struct
*ignored
)
3860 printk(IBM_NOTICE
"fan watchdog: enabling fan\n");
3861 rc
= fan_set_enable();
3863 printk(IBM_ERR
"fan watchdog: error %d while enabling fan, "
3864 "will try again later...\n", -rc
);
3865 /* reschedule for later */
3866 fan_watchdog_reset();
3870 static void fan_watchdog_reset(void)
3872 static int fan_watchdog_active
;
3874 if (fan_control_access_mode
== TPACPI_FAN_WR_NONE
)
3877 if (fan_watchdog_active
)
3878 cancel_delayed_work(&fan_watchdog_task
);
3880 if (fan_watchdog_maxinterval
> 0) {
3881 fan_watchdog_active
= 1;
3882 if (!schedule_delayed_work(&fan_watchdog_task
,
3883 msecs_to_jiffies(fan_watchdog_maxinterval
3885 printk(IBM_ERR
"failed to schedule the fan watchdog, "
3886 "watchdog will not trigger\n");
3889 fan_watchdog_active
= 0;
3892 static int fan_set_level(int level
)
3894 if (!fan_control_allowed
)
3897 switch (fan_control_access_mode
) {
3898 case TPACPI_FAN_WR_ACPI_SFAN
:
3899 if (level
>= 0 && level
<= 7) {
3900 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", level
))
3906 case TPACPI_FAN_WR_ACPI_FANS
:
3907 case TPACPI_FAN_WR_TPEC
:
3908 if ((level
!= TP_EC_FAN_AUTO
) &&
3909 (level
!= TP_EC_FAN_FULLSPEED
) &&
3910 ((level
< 0) || (level
> 7)))
3913 /* safety net should the EC not support AUTO
3914 * or FULLSPEED mode bits and just ignore them */
3915 if (level
& TP_EC_FAN_FULLSPEED
)
3916 level
|= 7; /* safety min speed 7 */
3917 else if (level
& TP_EC_FAN_FULLSPEED
)
3918 level
|= 4; /* safety min speed 4 */
3920 if (!acpi_ec_write(fan_status_offset
, level
))
3923 tp_features
.fan_ctrl_status_undef
= 0;
3932 static int fan_set_level_safe(int level
)
3936 if (!fan_control_allowed
)
3939 rc
= mutex_lock_interruptible(&fan_mutex
);
3943 if (level
== TPACPI_FAN_LAST_LEVEL
)
3944 level
= fan_control_desired_level
;
3946 rc
= fan_set_level(level
);
3948 fan_update_desired_level(level
);
3950 mutex_unlock(&fan_mutex
);
3954 static int fan_set_enable(void)
3959 if (!fan_control_allowed
)
3962 rc
= mutex_lock_interruptible(&fan_mutex
);
3966 switch (fan_control_access_mode
) {
3967 case TPACPI_FAN_WR_ACPI_FANS
:
3968 case TPACPI_FAN_WR_TPEC
:
3969 rc
= fan_get_status(&s
);
3973 /* Don't go out of emergency fan mode */
3976 s
|= TP_EC_FAN_AUTO
| 4; /* min fan speed 4 */
3979 if (!acpi_ec_write(fan_status_offset
, s
))
3982 tp_features
.fan_ctrl_status_undef
= 0;
3987 case TPACPI_FAN_WR_ACPI_SFAN
:
3988 rc
= fan_get_status(&s
);
3994 /* Set fan to at least level 4 */
3997 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", s
))
4007 mutex_unlock(&fan_mutex
);
4011 static int fan_set_disable(void)
4015 if (!fan_control_allowed
)
4018 rc
= mutex_lock_interruptible(&fan_mutex
);
4023 switch (fan_control_access_mode
) {
4024 case TPACPI_FAN_WR_ACPI_FANS
:
4025 case TPACPI_FAN_WR_TPEC
:
4026 if (!acpi_ec_write(fan_status_offset
, 0x00))
4029 fan_control_desired_level
= 0;
4030 tp_features
.fan_ctrl_status_undef
= 0;
4034 case TPACPI_FAN_WR_ACPI_SFAN
:
4035 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", 0x00))
4038 fan_control_desired_level
= 0;
4046 mutex_unlock(&fan_mutex
);
4050 static int fan_set_speed(int speed
)
4054 if (!fan_control_allowed
)
4057 rc
= mutex_lock_interruptible(&fan_mutex
);
4062 switch (fan_control_access_mode
) {
4063 case TPACPI_FAN_WR_ACPI_FANS
:
4064 if (speed
>= 0 && speed
<= 65535) {
4065 if (!acpi_evalf(fans_handle
, NULL
, NULL
, "vddd",
4066 speed
, speed
, speed
))
4076 mutex_unlock(&fan_mutex
);
4080 static int fan_read(char *p
)
4085 unsigned int speed
= 0;
4087 switch (fan_status_access_mode
) {
4088 case TPACPI_FAN_RD_ACPI_GFAN
:
4089 /* 570, 600e/x, 770e, 770x */
4090 if ((rc
= fan_get_status_safe(&status
)) < 0)
4093 len
+= sprintf(p
+ len
, "status:\t\t%s\n"
4095 (status
!= 0) ? "enabled" : "disabled", status
);
4098 case TPACPI_FAN_RD_TPEC
:
4099 /* all except 570, 600e/x, 770e, 770x */
4100 if ((rc
= fan_get_status_safe(&status
)) < 0)
4103 if (unlikely(tp_features
.fan_ctrl_status_undef
)) {
4104 if (status
!= fan_control_initial_status
)
4105 tp_features
.fan_ctrl_status_undef
= 0;
4107 /* Return most likely status. In fact, it
4108 * might be the only possible status */
4109 status
= TP_EC_FAN_AUTO
;
4112 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
4113 (status
!= 0) ? "enabled" : "disabled");
4115 if ((rc
= fan_get_speed(&speed
)) < 0)
4118 len
+= sprintf(p
+ len
, "speed:\t\t%d\n", speed
);
4120 if (status
& TP_EC_FAN_FULLSPEED
)
4121 /* Disengaged mode takes precedence */
4122 len
+= sprintf(p
+ len
, "level:\t\tdisengaged\n");
4123 else if (status
& TP_EC_FAN_AUTO
)
4124 len
+= sprintf(p
+ len
, "level:\t\tauto\n");
4126 len
+= sprintf(p
+ len
, "level:\t\t%d\n", status
);
4129 case TPACPI_FAN_NONE
:
4131 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
4134 if (fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) {
4135 len
+= sprintf(p
+ len
, "commands:\tlevel <level>");
4137 switch (fan_control_access_mode
) {
4138 case TPACPI_FAN_WR_ACPI_SFAN
:
4139 len
+= sprintf(p
+ len
, " (<level> is 0-7)\n");
4143 len
+= sprintf(p
+ len
, " (<level> is 0-7, "
4144 "auto, disengaged, full-speed)\n");
4149 if (fan_control_commands
& TPACPI_FAN_CMD_ENABLE
)
4150 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n"
4151 "commands:\twatchdog <timeout> (<timeout> is 0 (off), "
4152 "1-120 (seconds))\n");
4154 if (fan_control_commands
& TPACPI_FAN_CMD_SPEED
)
4155 len
+= sprintf(p
+ len
, "commands:\tspeed <speed>"
4156 " (<speed> is 0-65535)\n");
4161 static int fan_write_cmd_level(const char *cmd
, int *rc
)
4165 if (strlencmp(cmd
, "level auto") == 0)
4166 level
= TP_EC_FAN_AUTO
;
4167 else if ((strlencmp(cmd
, "level disengaged") == 0) |
4168 (strlencmp(cmd
, "level full-speed") == 0))
4169 level
= TP_EC_FAN_FULLSPEED
;
4170 else if (sscanf(cmd
, "level %d", &level
) != 1)
4173 if ((*rc
= fan_set_level_safe(level
)) == -ENXIO
)
4174 printk(IBM_ERR
"level command accepted for unsupported "
4175 "access mode %d", fan_control_access_mode
);
4180 static int fan_write_cmd_enable(const char *cmd
, int *rc
)
4182 if (strlencmp(cmd
, "enable") != 0)
4185 if ((*rc
= fan_set_enable()) == -ENXIO
)
4186 printk(IBM_ERR
"enable command accepted for unsupported "
4187 "access mode %d", fan_control_access_mode
);
4192 static int fan_write_cmd_disable(const char *cmd
, int *rc
)
4194 if (strlencmp(cmd
, "disable") != 0)
4197 if ((*rc
= fan_set_disable()) == -ENXIO
)
4198 printk(IBM_ERR
"disable command accepted for unsupported "
4199 "access mode %d", fan_control_access_mode
);
4204 static int fan_write_cmd_speed(const char *cmd
, int *rc
)
4209 * Support speed <low> <medium> <high> ? */
4211 if (sscanf(cmd
, "speed %d", &speed
) != 1)
4214 if ((*rc
= fan_set_speed(speed
)) == -ENXIO
)
4215 printk(IBM_ERR
"speed command accepted for unsupported "
4216 "access mode %d", fan_control_access_mode
);
4221 static int fan_write_cmd_watchdog(const char *cmd
, int *rc
)
4225 if (sscanf(cmd
, "watchdog %d", &interval
) != 1)
4228 if (interval
< 0 || interval
> 120)
4231 fan_watchdog_maxinterval
= interval
;
4236 static int fan_write(char *buf
)
4241 while (!rc
&& (cmd
= next_cmd(&buf
))) {
4242 if (!((fan_control_commands
& TPACPI_FAN_CMD_LEVEL
) &&
4243 fan_write_cmd_level(cmd
, &rc
)) &&
4244 !((fan_control_commands
& TPACPI_FAN_CMD_ENABLE
) &&
4245 (fan_write_cmd_enable(cmd
, &rc
) ||
4246 fan_write_cmd_disable(cmd
, &rc
) ||
4247 fan_write_cmd_watchdog(cmd
, &rc
))) &&
4248 !((fan_control_commands
& TPACPI_FAN_CMD_SPEED
) &&
4249 fan_write_cmd_speed(cmd
, &rc
))
4253 fan_watchdog_reset();
4259 static struct ibm_struct fan_driver_data
= {
4266 /****************************************************************************
4267 ****************************************************************************
4271 ****************************************************************************
4272 ****************************************************************************/
4275 static struct proc_dir_entry
*proc_dir
;
4277 /* Subdriver registry */
4278 static LIST_HEAD(tpacpi_all_drivers
);
4282 * Module and infrastructure proble, init and exit handling
4285 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
4286 static const char * __init
str_supported(int is_supported
)
4288 static char text_unsupported
[] __initdata
= "not supported";
4290 return (is_supported
)? &text_unsupported
[4] : &text_unsupported
[0];
4292 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
4294 static int __init
ibm_init(struct ibm_init_struct
*iibm
)
4297 struct ibm_struct
*ibm
= iibm
->data
;
4298 struct proc_dir_entry
*entry
;
4300 BUG_ON(ibm
== NULL
);
4302 INIT_LIST_HEAD(&ibm
->all_drivers
);
4304 if (ibm
->flags
.experimental
&& !experimental
)
4307 dbg_printk(TPACPI_DBG_INIT
,
4308 "probing for %s\n", ibm
->name
);
4311 ret
= iibm
->init(iibm
);
4313 return 0; /* probe failed */
4317 ibm
->flags
.init_called
= 1;
4321 if (ibm
->acpi
->hid
) {
4322 ret
= register_tpacpi_subdriver(ibm
);
4327 if (ibm
->acpi
->notify
) {
4328 ret
= setup_acpi_notify(ibm
);
4329 if (ret
== -ENODEV
) {
4330 printk(IBM_NOTICE
"disabling subdriver %s\n",
4340 dbg_printk(TPACPI_DBG_INIT
,
4341 "%s installed\n", ibm
->name
);
4344 entry
= create_proc_entry(ibm
->name
,
4345 S_IFREG
| S_IRUGO
| S_IWUSR
,
4348 printk(IBM_ERR
"unable to create proc entry %s\n",
4353 entry
->owner
= THIS_MODULE
;
4355 entry
->read_proc
= &dispatch_procfs_read
;
4357 entry
->write_proc
= &dispatch_procfs_write
;
4358 ibm
->flags
.proc_created
= 1;
4361 list_add_tail(&ibm
->all_drivers
, &tpacpi_all_drivers
);
4366 dbg_printk(TPACPI_DBG_INIT
,
4367 "%s: at error exit path with result %d\n",
4371 return (ret
< 0)? ret
: 0;
4374 static void ibm_exit(struct ibm_struct
*ibm
)
4376 dbg_printk(TPACPI_DBG_EXIT
, "removing %s\n", ibm
->name
);
4378 list_del_init(&ibm
->all_drivers
);
4380 if (ibm
->flags
.acpi_notify_installed
) {
4381 dbg_printk(TPACPI_DBG_EXIT
,
4382 "%s: acpi_remove_notify_handler\n", ibm
->name
);
4384 acpi_remove_notify_handler(*ibm
->acpi
->handle
,
4386 dispatch_acpi_notify
);
4387 ibm
->flags
.acpi_notify_installed
= 0;
4388 ibm
->flags
.acpi_notify_installed
= 0;
4391 if (ibm
->flags
.proc_created
) {
4392 dbg_printk(TPACPI_DBG_EXIT
,
4393 "%s: remove_proc_entry\n", ibm
->name
);
4394 remove_proc_entry(ibm
->name
, proc_dir
);
4395 ibm
->flags
.proc_created
= 0;
4398 if (ibm
->flags
.acpi_driver_registered
) {
4399 dbg_printk(TPACPI_DBG_EXIT
,
4400 "%s: acpi_bus_unregister_driver\n", ibm
->name
);
4402 acpi_bus_unregister_driver(ibm
->acpi
->driver
);
4403 kfree(ibm
->acpi
->driver
);
4404 ibm
->acpi
->driver
= NULL
;
4405 ibm
->flags
.acpi_driver_registered
= 0;
4408 if (ibm
->flags
.init_called
&& ibm
->exit
) {
4410 ibm
->flags
.init_called
= 0;
4413 dbg_printk(TPACPI_DBG_INIT
, "finished removing %s\n", ibm
->name
);
4418 static void __init
get_thinkpad_model_data(struct thinkpad_id_data
*tp
)
4420 struct dmi_device
*dev
= NULL
;
4421 char ec_fw_string
[18];
4426 memset(tp
, 0, sizeof(*tp
));
4428 if (dmi_name_in_vendors("IBM"))
4429 tp
->vendor
= PCI_VENDOR_ID_IBM
;
4430 else if (dmi_name_in_vendors("LENOVO"))
4431 tp
->vendor
= PCI_VENDOR_ID_LENOVO
;
4435 tp
->bios_version_str
= kstrdup(dmi_get_system_info(DMI_BIOS_VERSION
),
4437 if (!tp
->bios_version_str
)
4439 tp
->bios_model
= tp
->bios_version_str
[0]
4440 | (tp
->bios_version_str
[1] << 8);
4443 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
4444 * X32 or newer, all Z series; Some models must have an
4445 * up-to-date BIOS or they will not be detected.
4447 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
4449 while ((dev
= dmi_find_device(DMI_DEV_TYPE_OEM_STRING
, NULL
, dev
))) {
4450 if (sscanf(dev
->name
,
4451 "IBM ThinkPad Embedded Controller -[%17c",
4452 ec_fw_string
) == 1) {
4453 ec_fw_string
[sizeof(ec_fw_string
) - 1] = 0;
4454 ec_fw_string
[strcspn(ec_fw_string
, " ]")] = 0;
4456 tp
->ec_version_str
= kstrdup(ec_fw_string
, GFP_KERNEL
);
4457 tp
->ec_model
= ec_fw_string
[0]
4458 | (ec_fw_string
[1] << 8);
4463 tp
->model_str
= kstrdup(dmi_get_system_info(DMI_PRODUCT_VERSION
),
4465 if (strnicmp(tp
->model_str
, "ThinkPad", 8) != 0) {
4466 kfree(tp
->model_str
);
4467 tp
->model_str
= NULL
;
4471 static int __init
probe_for_thinkpad(void)
4479 * Non-ancient models have better DMI tagging, but very old models
4482 is_thinkpad
= (thinkpad_id
.model_str
!= NULL
);
4484 /* ec is required because many other handles are relative to it */
4485 IBM_ACPIHANDLE_INIT(ec
);
4489 "Not yet supported ThinkPad detected!\n");
4494 * Risks a regression on very old machines, but reduces potential
4495 * false positives a damn great deal
4498 is_thinkpad
= (thinkpad_id
.vendor
== PCI_VENDOR_ID_IBM
);
4500 if (!is_thinkpad
&& !force_load
)
4507 /* Module init, exit, parameters */
4509 static struct ibm_init_struct ibms_init
[] __initdata
= {
4511 .init
= thinkpad_acpi_driver_init
,
4512 .data
= &thinkpad_acpi_driver_data
,
4515 .init
= hotkey_init
,
4516 .data
= &hotkey_driver_data
,
4519 .init
= bluetooth_init
,
4520 .data
= &bluetooth_driver_data
,
4524 .data
= &wan_driver_data
,
4528 .data
= &video_driver_data
,
4532 .data
= &light_driver_data
,
4534 #ifdef CONFIG_THINKPAD_ACPI_DOCK
4537 .data
= &dock_driver_data
[0],
4541 .data
= &dock_driver_data
[1],
4544 #ifdef CONFIG_THINKPAD_ACPI_BAY
4547 .data
= &bay_driver_data
,
4552 .data
= &cmos_driver_data
,
4556 .data
= &led_driver_data
,
4560 .data
= &beep_driver_data
,
4563 .init
= thermal_init
,
4564 .data
= &thermal_driver_data
,
4567 .data
= &ecdump_driver_data
,
4570 .init
= brightness_init
,
4571 .data
= &brightness_driver_data
,
4574 .data
= &volume_driver_data
,
4578 .data
= &fan_driver_data
,
4582 static int __init
set_ibm_param(const char *val
, struct kernel_param
*kp
)
4585 struct ibm_struct
*ibm
;
4587 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
4588 ibm
= ibms_init
[i
].data
;
4589 BUG_ON(ibm
== NULL
);
4591 if (strcmp(ibm
->name
, kp
->name
) == 0 && ibm
->write
) {
4592 if (strlen(val
) > sizeof(ibms_init
[i
].param
) - 2)
4594 strcpy(ibms_init
[i
].param
, val
);
4595 strcat(ibms_init
[i
].param
, ",");
4603 static int experimental
;
4604 module_param(experimental
, int, 0);
4606 static u32 dbg_level
;
4607 module_param_named(debug
, dbg_level
, uint
, 0);
4609 static int force_load
;
4610 module_param(force_load
, bool, 0);
4612 static int fan_control_allowed
;
4613 module_param_named(fan_control
, fan_control_allowed
, bool, 0);
4615 static int brightness_mode
;
4616 module_param_named(brightness_mode
, brightness_mode
, int, 0);
4618 #define IBM_PARAM(feature) \
4619 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
4622 IBM_PARAM(bluetooth
);
4625 #ifdef CONFIG_THINKPAD_ACPI_DOCK
4628 #ifdef CONFIG_THINKPAD_ACPI_BAY
4630 #endif /* CONFIG_THINKPAD_ACPI_BAY */
4635 IBM_PARAM(brightness
);
4639 static int __init
thinkpad_acpi_module_init(void)
4643 /* Driver-level probe */
4645 get_thinkpad_model_data(&thinkpad_id
);
4646 ret
= probe_for_thinkpad();
4648 thinkpad_acpi_module_exit();
4652 /* Driver initialization */
4654 IBM_ACPIHANDLE_INIT(ecrd
);
4655 IBM_ACPIHANDLE_INIT(ecwr
);
4657 proc_dir
= proc_mkdir(IBM_PROC_DIR
, acpi_root_dir
);
4659 printk(IBM_ERR
"unable to create proc dir " IBM_PROC_DIR
);
4660 thinkpad_acpi_module_exit();
4663 proc_dir
->owner
= THIS_MODULE
;
4665 ret
= platform_driver_register(&tpacpi_pdriver
);
4667 printk(IBM_ERR
"unable to register platform driver\n");
4668 thinkpad_acpi_module_exit();
4671 tp_features
.platform_drv_registered
= 1;
4673 ret
= tpacpi_create_driver_attributes(&tpacpi_pdriver
.driver
);
4675 printk(IBM_ERR
"unable to create sysfs driver attributes\n");
4676 thinkpad_acpi_module_exit();
4679 tp_features
.platform_drv_attrs_registered
= 1;
4682 /* Device initialization */
4683 tpacpi_pdev
= platform_device_register_simple(IBM_DRVR_NAME
, -1,
4685 if (IS_ERR(tpacpi_pdev
)) {
4686 ret
= PTR_ERR(tpacpi_pdev
);
4688 printk(IBM_ERR
"unable to register platform device\n");
4689 thinkpad_acpi_module_exit();
4692 tpacpi_hwmon
= hwmon_device_register(&tpacpi_pdev
->dev
);
4693 if (IS_ERR(tpacpi_hwmon
)) {
4694 ret
= PTR_ERR(tpacpi_hwmon
);
4695 tpacpi_hwmon
= NULL
;
4696 printk(IBM_ERR
"unable to register hwmon device\n");
4697 thinkpad_acpi_module_exit();
4700 tpacpi_inputdev
= input_allocate_device();
4701 if (!tpacpi_inputdev
) {
4702 printk(IBM_ERR
"unable to allocate input device\n");
4703 thinkpad_acpi_module_exit();
4706 /* Prepare input device, but don't register */
4707 tpacpi_inputdev
->name
= "ThinkPad Extra Buttons";
4708 tpacpi_inputdev
->phys
= IBM_DRVR_NAME
"/input0";
4709 tpacpi_inputdev
->id
.bustype
= BUS_HOST
;
4710 tpacpi_inputdev
->id
.vendor
= (thinkpad_id
.vendor
) ?
4711 thinkpad_id
.vendor
:
4713 tpacpi_inputdev
->id
.product
= TPACPI_HKEY_INPUT_PRODUCT
;
4714 tpacpi_inputdev
->id
.version
= TPACPI_HKEY_INPUT_VERSION
;
4716 for (i
= 0; i
< ARRAY_SIZE(ibms_init
); i
++) {
4717 ret
= ibm_init(&ibms_init
[i
]);
4718 if (ret
>= 0 && *ibms_init
[i
].param
)
4719 ret
= ibms_init
[i
].data
->write(ibms_init
[i
].param
);
4721 thinkpad_acpi_module_exit();
4725 ret
= input_register_device(tpacpi_inputdev
);
4727 printk(IBM_ERR
"unable to register input device\n");
4728 thinkpad_acpi_module_exit();
4731 tp_features
.input_device_registered
= 1;
4737 static void thinkpad_acpi_module_exit(void)
4739 struct ibm_struct
*ibm
, *itmp
;
4741 list_for_each_entry_safe_reverse(ibm
, itmp
,
4742 &tpacpi_all_drivers
,
4747 dbg_printk(TPACPI_DBG_INIT
, "finished subdriver exit path...\n");
4749 if (tpacpi_inputdev
) {
4750 if (tp_features
.input_device_registered
)
4751 input_unregister_device(tpacpi_inputdev
);
4753 input_free_device(tpacpi_inputdev
);
4757 hwmon_device_unregister(tpacpi_hwmon
);
4760 platform_device_unregister(tpacpi_pdev
);
4762 if (tp_features
.platform_drv_attrs_registered
)
4763 tpacpi_remove_driver_attributes(&tpacpi_pdriver
.driver
);
4765 if (tp_features
.platform_drv_registered
)
4766 platform_driver_unregister(&tpacpi_pdriver
);
4769 remove_proc_entry(IBM_PROC_DIR
, acpi_root_dir
);
4771 kfree(thinkpad_id
.bios_version_str
);
4772 kfree(thinkpad_id
.ec_version_str
);
4773 kfree(thinkpad_id
.model_str
);
4776 module_init(thinkpad_acpi_module_init
);
4777 module_exit(thinkpad_acpi_module_exit
);