2 * ibm_acpi.c - IBM ThinkPad ACPI Extras
5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #define IBM_VERSION "0.12a"
27 * 2005-08-17 0.12 fix compilation on 2.6.13-rc kernels
28 * 2005-03-17 0.11 support for 600e, 770x
29 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
30 * support for 770e, G41
31 * G40 and G41 don't have a thinklight
32 * temperatures no longer experimental
33 * experimental brightness control
34 * experimental volume control
35 * experimental fan enable/disable
36 * 2005-01-16 0.10 fix module loading on R30, R31
37 * 2005-01-16 0.9 support for 570, R30, R31
38 * ultrabay support on A22p, A3x
39 * limit arg for cmos, led, beep, drop experimental status
40 * more capable led control on A21e, A22p, T20-22, X20
41 * experimental temperatures and fan speed
42 * experimental embedded controller register dump
43 * mark more functions as __init, drop incorrect __exit
45 * thanks to Henrik Brix Andersen <brix@gentoo.org>
46 * fix parameter passing on module loading
47 * thanks to Rusty Russell <rusty@rustcorp.com.au>
48 * thanks to Jim Radford <radford@blackbean.org>
49 * 2004-11-08 0.8 fix init error case, don't return from a macro
50 * thanks to Chris Wright <chrisw@osdl.org>
51 * 2004-10-23 0.7 fix module loading on A21e, A22p, T20, T21, X20
52 * fix led control on A21e
53 * 2004-10-19 0.6 use acpi_bus_register_driver() to claim HKEY device
54 * 2004-10-18 0.5 thinklight support on A21e, G40, R32, T20, T21, X20
55 * proc file format changed
56 * video_switch command
57 * experimental cmos control
58 * experimental led control
59 * experimental acpi sounds
60 * 2004-09-16 0.4 support for module parameters
61 * hotkey mask can be prefixed by 0x
62 * video output switching
63 * video expansion control
64 * ultrabay eject support
65 * removed lcd brightness/on/off control, didn't work
66 * 2004-08-17 0.3 support for R40
67 * lcd off, brightness control
69 * 2004-08-14 0.2 support for T series, X20
70 * bluetooth enable/disable
71 * hotkey events disabled by default
72 * removed fan control, currently useless
73 * 2004-08-09 0.1 initial release, support for X series
76 #include <linux/kernel.h>
77 #include <linux/module.h>
78 #include <linux/init.h>
79 #include <linux/types.h>
80 #include <linux/proc_fs.h>
81 #include <linux/backlight.h>
82 #include <asm/uaccess.h>
83 #include <linux/dmi.h>
85 #include <acpi/acpi_drivers.h>
86 #include <acpi/acnamesp.h>
88 #define IBM_NAME "ibm"
89 #define IBM_DESC "IBM ThinkPad ACPI Extras"
90 #define IBM_FILE "ibm_acpi"
91 #define IBM_URL "http://ibm-acpi.sf.net/"
93 MODULE_AUTHOR("Borislav Deianov");
94 MODULE_DESCRIPTION(IBM_DESC
);
95 MODULE_VERSION(IBM_VERSION
);
96 MODULE_LICENSE("GPL");
98 #define IBM_DIR IBM_NAME
100 #define IBM_LOG IBM_FILE ": "
101 #define IBM_ERR KERN_ERR IBM_LOG
102 #define IBM_NOTICE KERN_NOTICE IBM_LOG
103 #define IBM_INFO KERN_INFO IBM_LOG
104 #define IBM_DEBUG KERN_DEBUG IBM_LOG
106 #define IBM_MAX_ACPI_ARGS 3
108 #define __unused __attribute__ ((unused))
110 static int experimental
;
111 module_param(experimental
, int, 0);
113 static acpi_handle root_handle
= NULL
;
115 #define IBM_HANDLE(object, parent, paths...) \
116 static acpi_handle object##_handle; \
117 static acpi_handle *object##_parent = &parent##_handle; \
118 static char *object##_path; \
119 static char *object##_paths[] = { paths }
122 * The following models are supported to various degrees:
124 * 570, 600e, 600x, 770e, 770x
125 * A20m, A21e, A21m, A21p, A22p, A30, A30p, A31, A31p
127 * R30, R31, R32, R40, R40e, R50, R50e, R50p, R51
128 * T20, T21, T22, T23, T30, T40, T40p, T41, T41p, T42, T42p, T43
129 * X20, X21, X22, X23, X24, X30, X31, X40
131 * The following models have no supported features:
135 * Still missing DSDTs for the following models:
143 IBM_HANDLE(ec
, root
, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
144 "\\_SB.PCI.ISA.EC", /* 570 */
145 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
146 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
147 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
148 "\\_SB.PCI0.ICH3.EC0", /* R31 */
149 "\\_SB.PCI0.LPC.EC", /* all others */
152 IBM_HANDLE(vid
, root
, "\\_SB.PCI.AGP.VGA", /* 570 */
153 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
154 "\\_SB.PCI0.VID0", /* 770e */
155 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
156 "\\_SB.PCI0.AGP.VID", /* all others */
159 IBM_HANDLE(vid2
, root
, "\\_SB.PCI0.AGPB.VID"); /* G41 */
161 IBM_HANDLE(cmos
, root
, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */
162 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
163 "\\CMS", /* R40, R40e */
165 #ifdef CONFIG_ACPI_IBM_DOCK
166 IBM_HANDLE(dock
, root
, "\\_SB.GDCK", /* X30, X31, X40 */
167 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
168 "\\_SB.PCI0.PCI1.DOCK", /* all others */
169 "\\_SB.PCI.ISA.SLCE", /* 570 */
170 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
172 IBM_HANDLE(bay
, root
, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
173 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
174 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
175 ); /* A21e, R30, R31 */
177 IBM_HANDLE(bay_ej
, bay
, "_EJ3", /* 600e/x, A2xm/p, A3x */
178 "_EJ0", /* all others */
179 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
181 IBM_HANDLE(bay2
, root
, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
182 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
185 IBM_HANDLE(bay2_ej
, bay2
, "_EJ3", /* 600e/x, 770e, A3x */
189 /* don't list other alternatives as we install a notify handler on the 570 */
190 IBM_HANDLE(pci
, root
, "\\_SB.PCI"); /* 570 */
192 IBM_HANDLE(hkey
, ec
, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
193 "^HKEY", /* R30, R31 */
194 "HKEY", /* all others */
197 IBM_HANDLE(lght
, root
, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
198 IBM_HANDLE(ledb
, ec
, "LEDB"); /* G4x */
200 IBM_HANDLE(led
, ec
, "SLED", /* 570 */
201 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
202 "LED", /* all others */
205 IBM_HANDLE(beep
, ec
, "BEEP"); /* all except R30, R31 */
206 IBM_HANDLE(ecrd
, ec
, "ECRD"); /* 570 */
207 IBM_HANDLE(ecwr
, ec
, "ECWR"); /* 570 */
208 IBM_HANDLE(fans
, ec
, "FANS"); /* X31, X40 */
210 IBM_HANDLE(gfan
, ec
, "GFAN", /* 570 */
211 "\\FSPD", /* 600e/x, 770e, 770x */
214 IBM_HANDLE(sfan
, ec
, "SFAN", /* 570 */
215 "JFNS", /* 770x-JL */
218 #define IBM_HKEY_HID "IBM0068"
219 #define IBM_PCI_HID "PNP0A03"
221 enum thermal_access_mode
{
222 IBMACPI_THERMAL_NONE
= 0, /* No thermal support */
223 IBMACPI_THERMAL_ACPI_TMP07
, /* Use ACPI TMP0-7 */
224 IBMACPI_THERMAL_ACPI_UPDT
, /* Use ACPI TMP0-7 with UPDT */
225 IBMACPI_THERMAL_TPEC_8
, /* Use ACPI EC regs, 8 sensors */
226 IBMACPI_THERMAL_TPEC_16
, /* Use ACPI EC regs, 16 sensors */
229 #define IBMACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
230 struct ibm_thermal_sensors_struct
{
231 s32 temp
[IBMACPI_MAX_THERMAL_SENSORS
];
234 enum fan_status_access_mode
{
235 IBMACPI_FAN_NONE
= 0, /* No fan status or control */
236 IBMACPI_FAN_RD_ACPI_GFAN
, /* Use ACPI GFAN */
237 IBMACPI_FAN_RD_TPEC
, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
240 enum fan_control_access_mode
{
241 IBMACPI_FAN_WR_NONE
= 0, /* No fan control */
242 IBMACPI_FAN_WR_ACPI_SFAN
, /* Use ACPI SFAN */
243 IBMACPI_FAN_WR_TPEC
, /* Use ACPI EC reg 0x2f */
244 IBMACPI_FAN_WR_ACPI_FANS
, /* Use ACPI FANS and EC reg 0x2f */
247 enum fan_control_commands
{
248 IBMACPI_FAN_CMD_SPEED
= 0x0001, /* speed command */
249 IBMACPI_FAN_CMD_LEVEL
= 0x0002, /* level command */
250 IBMACPI_FAN_CMD_ENABLE
= 0x0004, /* enable/disable cmd */
253 enum { /* Fan control constants */
254 fan_status_offset
= 0x2f, /* EC register 0x2f */
255 fan_rpm_offset
= 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
256 * 0x84 must be read before 0x85 */
259 static int ibm_thinkpad_ec_found
;
266 struct acpi_driver
*driver
;
269 int (*read
) (char *);
270 int (*write
) (char *);
273 void (*notify
) (struct ibm_struct
*, u32
);
276 struct acpi_device
*device
;
278 int driver_registered
;
281 int notify_installed
;
286 static struct proc_dir_entry
*proc_dir
= NULL
;
288 static struct backlight_device
*ibm_backlight_device
;
290 #define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off")
291 #define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
292 #define strlencmp(a,b) (strncmp((a), (b), strlen(b)))
294 static int acpi_evalf(acpi_handle handle
,
295 void *res
, char *method
, char *fmt
, ...)
298 struct acpi_object_list params
;
299 union acpi_object in_objs
[IBM_MAX_ACPI_ARGS
];
300 struct acpi_buffer result
, *resultp
;
301 union acpi_object out_obj
;
309 printk(IBM_ERR
"acpi_evalf() called with empty format\n");
322 params
.pointer
= &in_objs
[0];
329 in_objs
[params
.count
].integer
.value
= va_arg(ap
, int);
330 in_objs
[params
.count
++].type
= ACPI_TYPE_INTEGER
;
332 /* add more types as needed */
334 printk(IBM_ERR
"acpi_evalf() called "
335 "with invalid format character '%c'\n", c
);
341 if (res_type
!= 'v') {
342 result
.length
= sizeof(out_obj
);
343 result
.pointer
= &out_obj
;
348 status
= acpi_evaluate_object(handle
, method
, ¶ms
, resultp
);
353 *(int *)res
= out_obj
.integer
.value
;
354 success
= status
== AE_OK
&& out_obj
.type
== ACPI_TYPE_INTEGER
;
357 success
= status
== AE_OK
;
359 /* add more types as needed */
361 printk(IBM_ERR
"acpi_evalf() called "
362 "with invalid format character '%c'\n", res_type
);
366 if (!success
&& !quiet
)
367 printk(IBM_ERR
"acpi_evalf(%s, %s, ...) failed: %d\n",
368 method
, fmt0
, status
);
373 static void __unused
acpi_print_int(acpi_handle handle
, char *method
)
377 if (acpi_evalf(handle
, &i
, method
, "d"))
378 printk(IBM_INFO
"%s = 0x%x\n", method
, i
);
380 printk(IBM_ERR
"error calling %s\n", method
);
383 static char *next_cmd(char **cmds
)
388 while ((end
= strchr(start
, ',')) && end
== start
)
399 static int driver_init(void)
401 printk(IBM_INFO
"%s v%s\n", IBM_DESC
, IBM_VERSION
);
402 printk(IBM_INFO
"%s\n", IBM_URL
);
407 static int driver_read(char *p
)
411 len
+= sprintf(p
+ len
, "driver:\t\t%s\n", IBM_DESC
);
412 len
+= sprintf(p
+ len
, "version:\t%s\n", IBM_VERSION
);
417 static int hotkey_supported
;
418 static int hotkey_mask_supported
;
419 static int hotkey_orig_status
;
420 static int hotkey_orig_mask
;
422 static int hotkey_get(int *status
, int *mask
)
424 if (!acpi_evalf(hkey_handle
, status
, "DHKC", "d"))
427 if (hotkey_mask_supported
)
428 if (!acpi_evalf(hkey_handle
, mask
, "DHKN", "d"))
434 static int hotkey_set(int status
, int mask
)
438 if (!acpi_evalf(hkey_handle
, NULL
, "MHKC", "vd", status
))
441 if (hotkey_mask_supported
)
442 for (i
= 0; i
< 32; i
++) {
443 int bit
= ((1 << i
) & mask
) != 0;
444 if (!acpi_evalf(hkey_handle
,
445 NULL
, "MHKM", "vdd", i
+ 1, bit
))
452 static int hotkey_init(void)
454 /* hotkey not supported on 570 */
455 hotkey_supported
= hkey_handle
!= NULL
;
457 if (hotkey_supported
) {
458 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
459 A30, R30, R31, T20-22, X20-21, X22-24 */
460 hotkey_mask_supported
=
461 acpi_evalf(hkey_handle
, NULL
, "DHKN", "qv");
463 if (!hotkey_get(&hotkey_orig_status
, &hotkey_orig_mask
))
470 static int hotkey_read(char *p
)
475 if (!hotkey_supported
) {
476 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
480 if (!hotkey_get(&status
, &mask
))
483 len
+= sprintf(p
+ len
, "status:\t\t%s\n", enabled(status
, 0));
484 if (hotkey_mask_supported
) {
485 len
+= sprintf(p
+ len
, "mask:\t\t0x%04x\n", mask
);
486 len
+= sprintf(p
+ len
,
487 "commands:\tenable, disable, reset, <mask>\n");
489 len
+= sprintf(p
+ len
, "mask:\t\tnot supported\n");
490 len
+= sprintf(p
+ len
, "commands:\tenable, disable, reset\n");
496 static int hotkey_write(char *buf
)
502 if (!hotkey_supported
)
505 if (!hotkey_get(&status
, &mask
))
508 while ((cmd
= next_cmd(&buf
))) {
509 if (strlencmp(cmd
, "enable") == 0) {
511 } else if (strlencmp(cmd
, "disable") == 0) {
513 } else if (strlencmp(cmd
, "reset") == 0) {
514 status
= hotkey_orig_status
;
515 mask
= hotkey_orig_mask
;
516 } else if (sscanf(cmd
, "0x%x", &mask
) == 1) {
518 } else if (sscanf(cmd
, "%x", &mask
) == 1) {
525 if (do_cmd
&& !hotkey_set(status
, mask
))
531 static void hotkey_exit(void)
533 if (hotkey_supported
)
534 hotkey_set(hotkey_orig_status
, hotkey_orig_mask
);
537 static void hotkey_notify(struct ibm_struct
*ibm
, u32 event
)
541 if (acpi_evalf(hkey_handle
, &hkey
, "MHKP", "d"))
542 acpi_bus_generate_event(ibm
->device
, event
, hkey
);
544 printk(IBM_ERR
"unknown hotkey event %d\n", event
);
545 acpi_bus_generate_event(ibm
->device
, event
, 0);
549 static int bluetooth_supported
;
551 static int bluetooth_init(void)
553 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
554 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
555 bluetooth_supported
= hkey_handle
&&
556 acpi_evalf(hkey_handle
, NULL
, "GBDC", "qv");
561 static int bluetooth_status(void)
565 if (!bluetooth_supported
||
566 !acpi_evalf(hkey_handle
, &status
, "GBDC", "d"))
572 static int bluetooth_read(char *p
)
575 int status
= bluetooth_status();
577 if (!bluetooth_supported
)
578 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
579 else if (!(status
& 1))
580 len
+= sprintf(p
+ len
, "status:\t\tnot installed\n");
582 len
+= sprintf(p
+ len
, "status:\t\t%s\n", enabled(status
, 1));
583 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n");
589 static int bluetooth_write(char *buf
)
591 int status
= bluetooth_status();
595 if (!bluetooth_supported
)
598 while ((cmd
= next_cmd(&buf
))) {
599 if (strlencmp(cmd
, "enable") == 0) {
601 } else if (strlencmp(cmd
, "disable") == 0) {
608 if (do_cmd
&& !acpi_evalf(hkey_handle
, NULL
, "SBDC", "vd", status
))
614 static int wan_supported
;
616 static int wan_init(void)
618 wan_supported
= hkey_handle
&&
619 acpi_evalf(hkey_handle
, NULL
, "GWAN", "qv");
624 static int wan_status(void)
628 if (!wan_supported
|| !acpi_evalf(hkey_handle
, &status
, "GWAN", "d"))
634 static int wan_read(char *p
)
637 int status
= wan_status();
640 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
641 else if (!(status
& 1))
642 len
+= sprintf(p
+ len
, "status:\t\tnot installed\n");
644 len
+= sprintf(p
+ len
, "status:\t\t%s\n", enabled(status
, 1));
645 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n");
651 static int wan_write(char *buf
)
653 int status
= wan_status();
660 while ((cmd
= next_cmd(&buf
))) {
661 if (strlencmp(cmd
, "enable") == 0) {
663 } else if (strlencmp(cmd
, "disable") == 0) {
670 if (do_cmd
&& !acpi_evalf(hkey_handle
, NULL
, "SWAN", "vd", status
))
676 static int video_supported
;
677 static int video_orig_autosw
;
683 static int video_init(void)
687 if (vid2_handle
&& acpi_evalf(NULL
, &ivga
, "\\IVGA", "d") && ivga
)
688 /* G41, assume IVGA doesn't change */
689 vid_handle
= vid2_handle
;
692 /* video switching not supported on R30, R31 */
694 else if (acpi_evalf(vid_handle
, &video_orig_autosw
, "SWIT", "qd"))
696 video_supported
= VIDEO_570
;
697 else if (acpi_evalf(vid_handle
, &video_orig_autosw
, "^VADL", "qd"))
698 /* 600e/x, 770e, 770x */
699 video_supported
= VIDEO_770
;
702 video_supported
= VIDEO_NEW
;
707 static int video_status(void)
712 if (video_supported
== VIDEO_570
) {
713 if (acpi_evalf(NULL
, &i
, "\\_SB.PHS", "dd", 0x87))
715 } else if (video_supported
== VIDEO_770
) {
716 if (acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
718 if (acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
720 } else if (video_supported
== VIDEO_NEW
) {
721 acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 1);
722 if (acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
725 acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0);
726 if (acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
728 if (acpi_evalf(NULL
, &i
, "\\VCDD", "d"))
735 static int video_autosw(void)
739 if (video_supported
== VIDEO_570
)
740 acpi_evalf(vid_handle
, &autosw
, "SWIT", "d");
741 else if (video_supported
== VIDEO_770
|| video_supported
== VIDEO_NEW
)
742 acpi_evalf(vid_handle
, &autosw
, "^VDEE", "d");
747 static int video_read(char *p
)
749 int status
= video_status();
750 int autosw
= video_autosw();
753 if (!video_supported
) {
754 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
758 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
759 len
+= sprintf(p
+ len
, "lcd:\t\t%s\n", enabled(status
, 0));
760 len
+= sprintf(p
+ len
, "crt:\t\t%s\n", enabled(status
, 1));
761 if (video_supported
== VIDEO_NEW
)
762 len
+= sprintf(p
+ len
, "dvi:\t\t%s\n", enabled(status
, 3));
763 len
+= sprintf(p
+ len
, "auto:\t\t%s\n", enabled(autosw
, 0));
764 len
+= sprintf(p
+ len
, "commands:\tlcd_enable, lcd_disable\n");
765 len
+= sprintf(p
+ len
, "commands:\tcrt_enable, crt_disable\n");
766 if (video_supported
== VIDEO_NEW
)
767 len
+= sprintf(p
+ len
, "commands:\tdvi_enable, dvi_disable\n");
768 len
+= sprintf(p
+ len
, "commands:\tauto_enable, auto_disable\n");
769 len
+= sprintf(p
+ len
, "commands:\tvideo_switch, expand_toggle\n");
774 static int video_switch(void)
776 int autosw
= video_autosw();
779 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", 1))
781 ret
= video_supported
== VIDEO_570
?
782 acpi_evalf(ec_handle
, NULL
, "_Q16", "v") :
783 acpi_evalf(vid_handle
, NULL
, "VSWT", "v");
784 acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", autosw
);
789 static int video_expand(void)
791 if (video_supported
== VIDEO_570
)
792 return acpi_evalf(ec_handle
, NULL
, "_Q17", "v");
793 else if (video_supported
== VIDEO_770
)
794 return acpi_evalf(vid_handle
, NULL
, "VEXP", "v");
796 return acpi_evalf(NULL
, NULL
, "\\VEXP", "v");
799 static int video_switch2(int status
)
803 if (video_supported
== VIDEO_570
) {
804 ret
= acpi_evalf(NULL
, NULL
,
805 "\\_SB.PHS2", "vdd", 0x8b, status
| 0x80);
806 } else if (video_supported
== VIDEO_770
) {
807 int autosw
= video_autosw();
808 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", 1))
811 ret
= acpi_evalf(vid_handle
, NULL
,
812 "ASWT", "vdd", status
* 0x100, 0);
814 acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", autosw
);
816 ret
= acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0x80) &&
817 acpi_evalf(NULL
, NULL
, "\\VSDS", "vdd", status
, 1);
823 static int video_write(char *buf
)
826 int enable
, disable
, status
;
828 if (!video_supported
)
831 enable
= disable
= 0;
833 while ((cmd
= next_cmd(&buf
))) {
834 if (strlencmp(cmd
, "lcd_enable") == 0) {
836 } else if (strlencmp(cmd
, "lcd_disable") == 0) {
838 } else if (strlencmp(cmd
, "crt_enable") == 0) {
840 } else if (strlencmp(cmd
, "crt_disable") == 0) {
842 } else if (video_supported
== VIDEO_NEW
&&
843 strlencmp(cmd
, "dvi_enable") == 0) {
845 } else if (video_supported
== VIDEO_NEW
&&
846 strlencmp(cmd
, "dvi_disable") == 0) {
848 } else if (strlencmp(cmd
, "auto_enable") == 0) {
849 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", 1))
851 } else if (strlencmp(cmd
, "auto_disable") == 0) {
852 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", 0))
854 } else if (strlencmp(cmd
, "video_switch") == 0) {
857 } else if (strlencmp(cmd
, "expand_toggle") == 0) {
864 if (enable
|| disable
) {
865 status
= (video_status() & 0x0f & ~disable
) | enable
;
866 if (!video_switch2(status
))
873 static void video_exit(void)
875 acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", video_orig_autosw
);
878 static int light_supported
;
879 static int light_status_supported
;
881 static int light_init(void)
883 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
884 light_supported
= (cmos_handle
|| lght_handle
) && !ledb_handle
;
887 /* light status not supported on
888 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
889 light_status_supported
= acpi_evalf(ec_handle
, NULL
,
895 static int light_read(char *p
)
900 if (!light_supported
) {
901 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
902 } else if (!light_status_supported
) {
903 len
+= sprintf(p
+ len
, "status:\t\tunknown\n");
904 len
+= sprintf(p
+ len
, "commands:\ton, off\n");
906 if (!acpi_evalf(ec_handle
, &status
, "KBLT", "d"))
908 len
+= sprintf(p
+ len
, "status:\t\t%s\n", onoff(status
, 0));
909 len
+= sprintf(p
+ len
, "commands:\ton, off\n");
915 static int light_write(char *buf
)
917 int cmos_cmd
, lght_cmd
;
921 if (!light_supported
)
924 while ((cmd
= next_cmd(&buf
))) {
925 if (strlencmp(cmd
, "on") == 0) {
928 } else if (strlencmp(cmd
, "off") == 0) {
934 success
= cmos_handle
?
935 acpi_evalf(cmos_handle
, NULL
, NULL
, "vd", cmos_cmd
) :
936 acpi_evalf(lght_handle
, NULL
, NULL
, "vd", lght_cmd
);
944 static int _sta(acpi_handle handle
)
948 if (!handle
|| !acpi_evalf(handle
, &status
, "_STA", "d"))
954 #ifdef CONFIG_ACPI_IBM_DOCK
955 #define dock_docked() (_sta(dock_handle) & 1)
957 static int dock_read(char *p
)
960 int docked
= dock_docked();
963 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
965 len
+= sprintf(p
+ len
, "status:\t\tundocked\n");
967 len
+= sprintf(p
+ len
, "status:\t\tdocked\n");
968 len
+= sprintf(p
+ len
, "commands:\tdock, undock\n");
974 static int dock_write(char *buf
)
981 while ((cmd
= next_cmd(&buf
))) {
982 if (strlencmp(cmd
, "undock") == 0) {
983 if (!acpi_evalf(dock_handle
, NULL
, "_DCK", "vd", 0) ||
984 !acpi_evalf(dock_handle
, NULL
, "_EJ0", "vd", 1))
986 } else if (strlencmp(cmd
, "dock") == 0) {
987 if (!acpi_evalf(dock_handle
, NULL
, "_DCK", "vd", 1))
996 static void dock_notify(struct ibm_struct
*ibm
, u32 event
)
998 int docked
= dock_docked();
999 int pci
= ibm
->hid
&& strstr(ibm
->hid
, IBM_PCI_HID
);
1001 if (event
== 1 && !pci
) /* 570 */
1002 acpi_bus_generate_event(ibm
->device
, event
, 1); /* button */
1003 else if (event
== 1 && pci
) /* 570 */
1004 acpi_bus_generate_event(ibm
->device
, event
, 3); /* dock */
1005 else if (event
== 3 && docked
)
1006 acpi_bus_generate_event(ibm
->device
, event
, 1); /* button */
1007 else if (event
== 3 && !docked
)
1008 acpi_bus_generate_event(ibm
->device
, event
, 2); /* undock */
1009 else if (event
== 0 && docked
)
1010 acpi_bus_generate_event(ibm
->device
, event
, 3); /* dock */
1012 printk(IBM_ERR
"unknown dock event %d, status %d\n",
1013 event
, _sta(dock_handle
));
1014 acpi_bus_generate_event(ibm
->device
, event
, 0); /* unknown */
1019 static int bay_status_supported
;
1020 static int bay_status2_supported
;
1021 static int bay_eject_supported
;
1022 static int bay_eject2_supported
;
1024 static int bay_init(void)
1026 bay_status_supported
= bay_handle
&&
1027 acpi_evalf(bay_handle
, NULL
, "_STA", "qv");
1028 bay_status2_supported
= bay2_handle
&&
1029 acpi_evalf(bay2_handle
, NULL
, "_STA", "qv");
1031 bay_eject_supported
= bay_handle
&& bay_ej_handle
&&
1032 (strlencmp(bay_ej_path
, "_EJ0") == 0 || experimental
);
1033 bay_eject2_supported
= bay2_handle
&& bay2_ej_handle
&&
1034 (strlencmp(bay2_ej_path
, "_EJ0") == 0 || experimental
);
1039 #define bay_occupied(b) (_sta(b##_handle) & 1)
1041 static int bay_read(char *p
)
1044 int occupied
= bay_occupied(bay
);
1045 int occupied2
= bay_occupied(bay2
);
1048 len
+= sprintf(p
+ len
, "status:\t\t%s\n", bay_status_supported
?
1049 (occupied
? "occupied" : "unoccupied") :
1051 if (bay_status2_supported
)
1052 len
+= sprintf(p
+ len
, "status2:\t%s\n", occupied2
?
1053 "occupied" : "unoccupied");
1055 eject
= bay_eject_supported
&& occupied
;
1056 eject2
= bay_eject2_supported
&& occupied2
;
1058 if (eject
&& eject2
)
1059 len
+= sprintf(p
+ len
, "commands:\teject, eject2\n");
1061 len
+= sprintf(p
+ len
, "commands:\teject\n");
1063 len
+= sprintf(p
+ len
, "commands:\teject2\n");
1068 static int bay_write(char *buf
)
1072 if (!bay_eject_supported
&& !bay_eject2_supported
)
1075 while ((cmd
= next_cmd(&buf
))) {
1076 if (bay_eject_supported
&& strlencmp(cmd
, "eject") == 0) {
1077 if (!acpi_evalf(bay_ej_handle
, NULL
, NULL
, "vd", 1))
1079 } else if (bay_eject2_supported
&&
1080 strlencmp(cmd
, "eject2") == 0) {
1081 if (!acpi_evalf(bay2_ej_handle
, NULL
, NULL
, "vd", 1))
1090 static void bay_notify(struct ibm_struct
*ibm
, u32 event
)
1092 acpi_bus_generate_event(ibm
->device
, event
, 0);
1095 static int cmos_read(char *p
)
1099 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1100 R30, R31, T20-22, X20-21 */
1102 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
1104 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
1105 len
+= sprintf(p
+ len
, "commands:\t<cmd> (<cmd> is 0-21)\n");
1111 static int cmos_eval(int cmos_cmd
)
1114 return acpi_evalf(cmos_handle
, NULL
, NULL
, "vd", cmos_cmd
);
1119 static int cmos_write(char *buf
)
1127 while ((cmd
= next_cmd(&buf
))) {
1128 if (sscanf(cmd
, "%u", &cmos_cmd
) == 1 &&
1129 cmos_cmd
>= 0 && cmos_cmd
<= 21) {
1134 if (!cmos_eval(cmos_cmd
))
1141 static int led_supported
;
1147 static int led_init(void)
1150 /* led not supported on R30, R31 */
1152 else if (strlencmp(led_path
, "SLED") == 0)
1154 led_supported
= LED_570
;
1155 else if (strlencmp(led_path
, "SYSL") == 0)
1156 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
1157 led_supported
= LED_OLD
;
1160 led_supported
= LED_NEW
;
1165 #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
1167 static int led_read(char *p
)
1171 if (!led_supported
) {
1172 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
1175 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
1177 if (led_supported
== LED_570
) {
1180 for (i
= 0; i
< 8; i
++) {
1181 if (!acpi_evalf(ec_handle
,
1182 &status
, "GLED", "dd", 1 << i
))
1184 len
+= sprintf(p
+ len
, "%d:\t\t%s\n",
1185 i
, led_status(status
));
1189 len
+= sprintf(p
+ len
, "commands:\t"
1190 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1195 /* off, on, blink */
1196 static const int led_sled_arg1
[] = { 0, 1, 3 };
1197 static const int led_exp_hlbl
[] = { 0, 0, 1 }; /* led# * */
1198 static const int led_exp_hlcl
[] = { 0, 1, 1 }; /* led# * */
1199 static const int led_led_arg1
[] = { 0, 0x80, 0xc0 };
1201 #define EC_HLCL 0x0c
1202 #define EC_HLBL 0x0d
1203 #define EC_HLMS 0x0e
1205 static int led_write(char *buf
)
1213 while ((cmd
= next_cmd(&buf
))) {
1214 if (sscanf(cmd
, "%d", &led
) != 1 || led
< 0 || led
> 7)
1217 if (strstr(cmd
, "off")) {
1219 } else if (strstr(cmd
, "on")) {
1221 } else if (strstr(cmd
, "blink")) {
1226 if (led_supported
== LED_570
) {
1229 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
1230 led
, led_sled_arg1
[ind
]))
1232 } else if (led_supported
== LED_OLD
) {
1233 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
1235 ret
= ec_write(EC_HLMS
, led
);
1238 ec_write(EC_HLBL
, led
* led_exp_hlbl
[ind
]);
1241 ec_write(EC_HLCL
, led
* led_exp_hlcl
[ind
]);
1246 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
1247 led
, led_led_arg1
[ind
]))
1255 static int beep_read(char *p
)
1260 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
1262 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
1263 len
+= sprintf(p
+ len
, "commands:\t<cmd> (<cmd> is 0-17)\n");
1269 static int beep_write(char *buf
)
1277 while ((cmd
= next_cmd(&buf
))) {
1278 if (sscanf(cmd
, "%u", &beep_cmd
) == 1 &&
1279 beep_cmd
>= 0 && beep_cmd
<= 17) {
1283 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vdd", beep_cmd
, 0))
1290 static int acpi_ec_read(int i
, u8
* p
)
1295 if (!acpi_evalf(ecrd_handle
, &v
, NULL
, "dd", i
))
1299 if (ec_read(i
, p
) < 0)
1306 static int acpi_ec_write(int i
, u8 v
)
1309 if (!acpi_evalf(ecwr_handle
, NULL
, NULL
, "vdd", i
, v
))
1312 if (ec_write(i
, v
) < 0)
1319 static enum thermal_access_mode thermal_read_mode
;
1321 static int thermal_init(void)
1325 int acpi_tmp7
= acpi_evalf(ec_handle
, NULL
, "TMP7", "qv");
1327 if (ibm_thinkpad_ec_found
&& experimental
) {
1329 * Direct EC access mode: sensors at registers
1330 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
1331 * non-implemented, thermal sensors return 0x80 when
1336 for (i
= 0; i
< 8; i
++) {
1337 if (likely(acpi_ec_read(0x78 + i
, &t
))) {
1343 if (likely(acpi_ec_read(0xC0 + i
, &t
))) {
1351 /* This is sheer paranoia, but we handle it anyway */
1354 "ThinkPad ACPI EC access misbehaving, "
1355 "falling back to ACPI TMPx access mode\n");
1356 thermal_read_mode
= IBMACPI_THERMAL_ACPI_TMP07
;
1359 "ThinkPad ACPI EC access misbehaving, "
1360 "disabling thermal sensors access\n");
1361 thermal_read_mode
= IBMACPI_THERMAL_NONE
;
1366 IBMACPI_THERMAL_TPEC_16
: IBMACPI_THERMAL_TPEC_8
;
1368 } else if (acpi_tmp7
) {
1369 if (acpi_evalf(ec_handle
, NULL
, "UPDT", "qv")) {
1370 /* 600e/x, 770e, 770x */
1371 thermal_read_mode
= IBMACPI_THERMAL_ACPI_UPDT
;
1373 /* Standard ACPI TMPx access, max 8 sensors */
1374 thermal_read_mode
= IBMACPI_THERMAL_ACPI_TMP07
;
1377 /* temperatures not supported on 570, G4x, R30, R31, R32 */
1378 thermal_read_mode
= IBMACPI_THERMAL_NONE
;
1384 static int thermal_get_sensors(struct ibm_thermal_sensors_struct
*s
)
1388 char tmpi
[] = "TMPi";
1393 switch (thermal_read_mode
) {
1394 #if IBMACPI_MAX_THERMAL_SENSORS >= 16
1395 case IBMACPI_THERMAL_TPEC_16
:
1396 for (i
= 0; i
< 8; i
++) {
1397 if (!acpi_ec_read(0xC0 + i
, &tmp
))
1399 s
->temp
[i
+ 8] = tmp
* 1000;
1403 case IBMACPI_THERMAL_TPEC_8
:
1404 for (i
= 0; i
< 8; i
++) {
1405 if (!acpi_ec_read(0x78 + i
, &tmp
))
1407 s
->temp
[i
] = tmp
* 1000;
1409 return (thermal_read_mode
== IBMACPI_THERMAL_TPEC_16
) ? 16 : 8;
1411 case IBMACPI_THERMAL_ACPI_UPDT
:
1412 if (!acpi_evalf(ec_handle
, NULL
, "UPDT", "v"))
1414 for (i
= 0; i
< 8; i
++) {
1416 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
1418 s
->temp
[i
] = (t
- 2732) * 100;
1422 case IBMACPI_THERMAL_ACPI_TMP07
:
1423 for (i
= 0; i
< 8; i
++) {
1425 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
1427 s
->temp
[i
] = t
* 1000;
1431 case IBMACPI_THERMAL_NONE
:
1437 static int thermal_read(char *p
)
1441 struct ibm_thermal_sensors_struct t
;
1443 n
= thermal_get_sensors(&t
);
1444 if (unlikely(n
< 0))
1447 len
+= sprintf(p
+ len
, "temperatures:\t");
1450 for (i
= 0; i
< (n
- 1); i
++)
1451 len
+= sprintf(p
+ len
, "%d ", t
.temp
[i
] / 1000);
1452 len
+= sprintf(p
+ len
, "%d\n", t
.temp
[i
] / 1000);
1454 len
+= sprintf(p
+ len
, "not supported\n");
1459 static u8 ecdump_regs
[256];
1461 static int ecdump_read(char *p
)
1467 len
+= sprintf(p
+ len
, "EC "
1468 " +00 +01 +02 +03 +04 +05 +06 +07"
1469 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
1470 for (i
= 0; i
< 256; i
+= 16) {
1471 len
+= sprintf(p
+ len
, "EC 0x%02x:", i
);
1472 for (j
= 0; j
< 16; j
++) {
1473 if (!acpi_ec_read(i
+ j
, &v
))
1475 if (v
!= ecdump_regs
[i
+ j
])
1476 len
+= sprintf(p
+ len
, " *%02x", v
);
1478 len
+= sprintf(p
+ len
, " %02x", v
);
1479 ecdump_regs
[i
+ j
] = v
;
1481 len
+= sprintf(p
+ len
, "\n");
1486 /* These are way too dangerous to advertise openly... */
1488 len
+= sprintf(p
+ len
, "commands:\t0x<offset> 0x<value>"
1489 " (<offset> is 00-ff, <value> is 00-ff)\n");
1490 len
+= sprintf(p
+ len
, "commands:\t0x<offset> <value> "
1491 " (<offset> is 00-ff, <value> is 0-255)\n");
1496 static int ecdump_write(char *buf
)
1501 while ((cmd
= next_cmd(&buf
))) {
1502 if (sscanf(cmd
, "0x%x 0x%x", &i
, &v
) == 2) {
1504 } else if (sscanf(cmd
, "0x%x %u", &i
, &v
) == 2) {
1508 if (i
>= 0 && i
< 256 && v
>= 0 && v
< 256) {
1509 if (!acpi_ec_write(i
, v
))
1518 static int brightness_offset
= 0x31;
1520 static int brightness_get(struct backlight_device
*bd
)
1523 if (!acpi_ec_read(brightness_offset
, &level
))
1530 static int brightness_read(char *p
)
1535 if ((level
= brightness_get(NULL
)) < 0) {
1536 len
+= sprintf(p
+ len
, "level:\t\tunreadable\n");
1538 len
+= sprintf(p
+ len
, "level:\t\t%d\n", level
& 0x7);
1539 len
+= sprintf(p
+ len
, "commands:\tup, down\n");
1540 len
+= sprintf(p
+ len
, "commands:\tlevel <level>"
1541 " (<level> is 0-7)\n");
1547 #define BRIGHTNESS_UP 4
1548 #define BRIGHTNESS_DOWN 5
1550 static int brightness_set(int value
)
1552 int cmos_cmd
, inc
, i
;
1553 int current_value
= brightness_get(NULL
);
1557 cmos_cmd
= value
> current_value
? BRIGHTNESS_UP
: BRIGHTNESS_DOWN
;
1558 inc
= value
> current_value
? 1 : -1;
1559 for (i
= current_value
; i
!= value
; i
+= inc
) {
1560 if (!cmos_eval(cmos_cmd
))
1562 if (!acpi_ec_write(brightness_offset
, i
+ inc
))
1569 static int brightness_write(char *buf
)
1575 while ((cmd
= next_cmd(&buf
))) {
1576 if ((level
= brightness_get(NULL
)) < 0)
1580 if (strlencmp(cmd
, "up") == 0) {
1581 new_level
= level
== 7 ? 7 : level
+ 1;
1582 } else if (strlencmp(cmd
, "down") == 0) {
1583 new_level
= level
== 0 ? 0 : level
- 1;
1584 } else if (sscanf(cmd
, "level %d", &new_level
) == 1 &&
1585 new_level
>= 0 && new_level
<= 7) {
1590 brightness_set(new_level
);
1596 static int brightness_update_status(struct backlight_device
*bd
)
1598 return brightness_set(bd
->props
->brightness
);
1601 static int volume_offset
= 0x30;
1603 static int volume_read(char *p
)
1608 if (!acpi_ec_read(volume_offset
, &level
)) {
1609 len
+= sprintf(p
+ len
, "level:\t\tunreadable\n");
1611 len
+= sprintf(p
+ len
, "level:\t\t%d\n", level
& 0xf);
1612 len
+= sprintf(p
+ len
, "mute:\t\t%s\n", onoff(level
, 6));
1613 len
+= sprintf(p
+ len
, "commands:\tup, down, mute\n");
1614 len
+= sprintf(p
+ len
, "commands:\tlevel <level>"
1615 " (<level> is 0-15)\n");
1621 #define VOLUME_DOWN 0
1623 #define VOLUME_MUTE 2
1625 static int volume_write(char *buf
)
1627 int cmos_cmd
, inc
, i
;
1629 int new_level
, new_mute
;
1632 while ((cmd
= next_cmd(&buf
))) {
1633 if (!acpi_ec_read(volume_offset
, &level
))
1635 new_mute
= mute
= level
& 0x40;
1636 new_level
= level
= level
& 0xf;
1638 if (strlencmp(cmd
, "up") == 0) {
1642 new_level
= level
== 15 ? 15 : level
+ 1;
1643 } else if (strlencmp(cmd
, "down") == 0) {
1647 new_level
= level
== 0 ? 0 : level
- 1;
1648 } else if (sscanf(cmd
, "level %d", &new_level
) == 1 &&
1649 new_level
>= 0 && new_level
<= 15) {
1651 } else if (strlencmp(cmd
, "mute") == 0) {
1656 if (new_level
!= level
) { /* mute doesn't change */
1657 cmos_cmd
= new_level
> level
? VOLUME_UP
: VOLUME_DOWN
;
1658 inc
= new_level
> level
? 1 : -1;
1660 if (mute
&& (!cmos_eval(cmos_cmd
) ||
1661 !acpi_ec_write(volume_offset
, level
)))
1664 for (i
= level
; i
!= new_level
; i
+= inc
)
1665 if (!cmos_eval(cmos_cmd
) ||
1666 !acpi_ec_write(volume_offset
, i
+ inc
))
1669 if (mute
&& (!cmos_eval(VOLUME_MUTE
) ||
1670 !acpi_ec_write(volume_offset
,
1675 if (new_mute
!= mute
) { /* level doesn't change */
1676 cmos_cmd
= new_mute
? VOLUME_MUTE
: VOLUME_UP
;
1678 if (!cmos_eval(cmos_cmd
) ||
1679 !acpi_ec_write(volume_offset
, level
+ new_mute
))
1687 static enum fan_status_access_mode fan_status_access_mode
;
1688 static enum fan_control_access_mode fan_control_access_mode
;
1689 static enum fan_control_commands fan_control_commands
;
1691 static int fan_init(void)
1695 fan_status_access_mode
= IBMACPI_FAN_NONE
;
1696 fan_control_access_mode
= IBMACPI_FAN_WR_NONE
;
1697 fan_control_commands
= 0;
1700 /* 570, 600e/x, 770e, 770x */
1701 fan_status_access_mode
= IBMACPI_FAN_RD_ACPI_GFAN
;
1703 /* all other ThinkPads: note that even old-style
1704 * ThinkPad ECs supports the fan control register */
1705 if (likely(acpi_ec_read(fan_status_offset
, &status
))) {
1706 fan_status_access_mode
= IBMACPI_FAN_RD_TPEC
;
1709 "ThinkPad ACPI EC access misbehaving, "
1710 "fan status and control unavailable\n");
1717 fan_control_access_mode
= IBMACPI_FAN_WR_ACPI_SFAN
;
1718 fan_control_commands
|= IBMACPI_FAN_CMD_LEVEL
;
1721 /* gfan without sfan means no fan control */
1722 /* all other models implement TP EC 0x2f control */
1726 fan_control_access_mode
=
1727 IBMACPI_FAN_WR_ACPI_FANS
;
1728 fan_control_commands
|=
1729 IBMACPI_FAN_CMD_SPEED
|
1730 IBMACPI_FAN_CMD_ENABLE
;
1732 fan_control_access_mode
= IBMACPI_FAN_WR_TPEC
;
1733 fan_control_commands
|= IBMACPI_FAN_CMD_ENABLE
;
1741 static int fan_read(char *p
)
1746 switch (fan_status_access_mode
) {
1747 case IBMACPI_FAN_RD_ACPI_GFAN
:
1748 /* 570, 600e/x, 770e, 770x */
1749 if (unlikely(!acpi_evalf(gfan_handle
, &status
, NULL
, "d")))
1752 len
+= sprintf(p
+ len
, "level:\t\t%d\n", status
);
1756 case IBMACPI_FAN_RD_TPEC
:
1757 /* all except 570, 600e/x, 770e, 770x */
1758 if (unlikely(!acpi_ec_read(fan_status_offset
, &status
)))
1761 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
1762 enabled(status
, 7));
1764 if (unlikely(!acpi_ec_read(fan_rpm_offset
, &lo
) ||
1765 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
)))
1768 len
+= sprintf(p
+ len
, "speed:\t\t%d\n",
1773 case IBMACPI_FAN_NONE
:
1775 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
1778 if (fan_control_commands
& IBMACPI_FAN_CMD_LEVEL
)
1779 len
+= sprintf(p
+ len
, "commands:\tlevel <level>"
1780 " (<level> is 0-7)\n");
1782 if (fan_control_commands
& IBMACPI_FAN_CMD_ENABLE
)
1783 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n");
1785 if (fan_control_commands
& IBMACPI_FAN_CMD_SPEED
)
1786 len
+= sprintf(p
+ len
, "commands:\tspeed <speed>"
1787 " (<speed> is 0-65535)\n");
1792 static int fan_write(char *buf
)
1797 while ((cmd
= next_cmd(&buf
))) {
1799 sscanf(cmd
, "level %d", &level
) == 1 &&
1800 level
>= 0 && level
<= 7) {
1802 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", level
))
1804 } else if (!gfan_handle
&& strlencmp(cmd
, "enable") == 0) {
1805 /* all except 570, 600e/x, 770e, 770x */
1806 if (!acpi_ec_write(fan_status_offset
, 0x80))
1808 } else if (!gfan_handle
&& strlencmp(cmd
, "disable") == 0) {
1809 /* all except 570, 600e/x, 770e, 770x */
1810 if (!acpi_ec_write(fan_status_offset
, 0x00))
1812 } else if (fans_handle
&&
1813 sscanf(cmd
, "speed %d", &speed
) == 1 &&
1814 speed
>= 0 && speed
<= 65535) {
1816 if (!acpi_evalf(fans_handle
, NULL
, NULL
, "vddd",
1817 speed
, speed
, speed
))
1826 static struct ibm_struct ibms
[] = {
1829 .init
= driver_init
,
1830 .read
= driver_read
,
1834 .hid
= IBM_HKEY_HID
,
1835 .init
= hotkey_init
,
1836 .read
= hotkey_read
,
1837 .write
= hotkey_write
,
1838 .exit
= hotkey_exit
,
1839 .notify
= hotkey_notify
,
1840 .handle
= &hkey_handle
,
1841 .type
= ACPI_DEVICE_NOTIFY
,
1844 .name
= "bluetooth",
1845 .init
= bluetooth_init
,
1846 .read
= bluetooth_read
,
1847 .write
= bluetooth_write
,
1860 .write
= video_write
,
1867 .write
= light_write
,
1869 #ifdef CONFIG_ACPI_IBM_DOCK
1873 .write
= dock_write
,
1874 .notify
= dock_notify
,
1875 .handle
= &dock_handle
,
1876 .type
= ACPI_SYSTEM_NOTIFY
,
1881 .notify
= dock_notify
,
1882 .handle
= &pci_handle
,
1883 .type
= ACPI_SYSTEM_NOTIFY
,
1891 .notify
= bay_notify
,
1892 .handle
= &bay_handle
,
1893 .type
= ACPI_SYSTEM_NOTIFY
,
1898 .write
= cmos_write
,
1909 .write
= beep_write
,
1913 .init
= thermal_init
,
1914 .read
= thermal_read
,
1918 .read
= ecdump_read
,
1919 .write
= ecdump_write
,
1923 .name
= "brightness",
1924 .read
= brightness_read
,
1925 .write
= brightness_write
,
1929 .read
= volume_read
,
1930 .write
= volume_write
,
1941 static int dispatch_read(char *page
, char **start
, off_t off
, int count
,
1942 int *eof
, void *data
)
1944 struct ibm_struct
*ibm
= (struct ibm_struct
*)data
;
1947 if (!ibm
|| !ibm
->read
)
1950 len
= ibm
->read(page
);
1954 if (len
<= off
+ count
)
1956 *start
= page
+ off
;
1966 static int dispatch_write(struct file
*file
, const char __user
* userbuf
,
1967 unsigned long count
, void *data
)
1969 struct ibm_struct
*ibm
= (struct ibm_struct
*)data
;
1973 if (!ibm
|| !ibm
->write
)
1976 kernbuf
= kmalloc(count
+ 2, GFP_KERNEL
);
1980 if (copy_from_user(kernbuf
, userbuf
, count
)) {
1986 strcat(kernbuf
, ",");
1987 ret
= ibm
->write(kernbuf
);
1996 static void dispatch_notify(acpi_handle handle
, u32 event
, void *data
)
1998 struct ibm_struct
*ibm
= (struct ibm_struct
*)data
;
2000 if (!ibm
|| !ibm
->notify
)
2003 ibm
->notify(ibm
, event
);
2006 static int __init
setup_notify(struct ibm_struct
*ibm
)
2014 ret
= acpi_bus_get_device(*ibm
->handle
, &ibm
->device
);
2016 printk(IBM_ERR
"%s device not present\n", ibm
->name
);
2020 acpi_driver_data(ibm
->device
) = ibm
;
2021 sprintf(acpi_device_class(ibm
->device
), "%s/%s", IBM_NAME
, ibm
->name
);
2023 status
= acpi_install_notify_handler(*ibm
->handle
, ibm
->type
,
2024 dispatch_notify
, ibm
);
2025 if (ACPI_FAILURE(status
)) {
2026 printk(IBM_ERR
"acpi_install_notify_handler(%s) failed: %d\n",
2034 static int __init
ibm_device_add(struct acpi_device
*device
)
2039 static int __init
register_driver(struct ibm_struct
*ibm
)
2043 ibm
->driver
= kmalloc(sizeof(struct acpi_driver
), GFP_KERNEL
);
2045 printk(IBM_ERR
"kmalloc(ibm->driver) failed\n");
2049 memset(ibm
->driver
, 0, sizeof(struct acpi_driver
));
2050 sprintf(ibm
->driver
->name
, "%s_%s", IBM_NAME
, ibm
->name
);
2051 ibm
->driver
->ids
= ibm
->hid
;
2052 ibm
->driver
->ops
.add
= &ibm_device_add
;
2054 ret
= acpi_bus_register_driver(ibm
->driver
);
2056 printk(IBM_ERR
"acpi_bus_register_driver(%s) failed: %d\n",
2064 static int __init
ibm_init(struct ibm_struct
*ibm
)
2067 struct proc_dir_entry
*entry
;
2069 if (ibm
->experimental
&& !experimental
)
2073 ret
= register_driver(ibm
);
2076 ibm
->driver_registered
= 1;
2083 ibm
->init_called
= 1;
2087 entry
= create_proc_entry(ibm
->name
,
2088 S_IFREG
| S_IRUGO
| S_IWUSR
,
2091 printk(IBM_ERR
"unable to create proc entry %s\n",
2095 entry
->owner
= THIS_MODULE
;
2097 entry
->read_proc
= &dispatch_read
;
2099 entry
->write_proc
= &dispatch_write
;
2100 ibm
->proc_created
= 1;
2104 ret
= setup_notify(ibm
);
2107 ibm
->notify_installed
= 1;
2113 static void ibm_exit(struct ibm_struct
*ibm
)
2115 if (ibm
->notify_installed
)
2116 acpi_remove_notify_handler(*ibm
->handle
, ibm
->type
,
2119 if (ibm
->proc_created
)
2120 remove_proc_entry(ibm
->name
, proc_dir
);
2122 if (ibm
->init_called
&& ibm
->exit
)
2125 if (ibm
->driver_registered
) {
2126 acpi_bus_unregister_driver(ibm
->driver
);
2131 static void __init
ibm_handle_init(char *name
,
2132 acpi_handle
* handle
, acpi_handle parent
,
2133 char **paths
, int num_paths
, char **path
)
2138 for (i
= 0; i
< num_paths
; i
++) {
2139 status
= acpi_get_handle(parent
, paths
[i
], handle
);
2140 if (ACPI_SUCCESS(status
)) {
2149 #define IBM_HANDLE_INIT(object) \
2150 ibm_handle_init(#object, &object##_handle, *object##_parent, \
2151 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
2153 static int set_ibm_param(const char *val
, struct kernel_param
*kp
)
2157 for (i
= 0; i
< ARRAY_SIZE(ibms
); i
++)
2158 if (strcmp(ibms
[i
].name
, kp
->name
) == 0 && ibms
[i
].write
) {
2159 if (strlen(val
) > sizeof(ibms
[i
].param
) - 2)
2161 strcpy(ibms
[i
].param
, val
);
2162 strcat(ibms
[i
].param
, ",");
2169 #define IBM_PARAM(feature) \
2170 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
2173 IBM_PARAM(bluetooth
);
2176 #ifdef CONFIG_ACPI_IBM_DOCK
2184 IBM_PARAM(brightness
);
2188 static struct backlight_properties ibm_backlight_data
= {
2189 .owner
= THIS_MODULE
,
2190 .get_brightness
= brightness_get
,
2191 .update_status
= brightness_update_status
,
2192 .max_brightness
= 7,
2195 static void acpi_ibm_exit(void)
2199 if (ibm_backlight_device
)
2200 backlight_device_unregister(ibm_backlight_device
);
2202 for (i
= ARRAY_SIZE(ibms
) - 1; i
>= 0; i
--)
2205 remove_proc_entry(IBM_DIR
, acpi_root_dir
);
2208 static int __init
check_dmi_for_ec(void)
2210 struct dmi_device
*dev
= NULL
;
2213 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
2214 * X32 or newer, all Z series; Some models must have an
2215 * up-to-date BIOS or they will not be detected.
2217 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
2219 while ((dev
= dmi_find_device(DMI_DEV_TYPE_OEM_STRING
, NULL
, dev
))) {
2220 if (strstr(dev
->name
, "IBM ThinkPad Embedded Controller"))
2226 static int __init
acpi_ibm_init(void)
2233 if (!acpi_specific_hotkey_enabled
) {
2234 printk(IBM_ERR
"using generic hotkey driver\n");
2238 /* ec is required because many other handles are relative to it */
2239 IBM_HANDLE_INIT(ec
);
2241 printk(IBM_ERR
"ec object not found\n");
2245 /* Models with newer firmware report the EC in DMI */
2246 ibm_thinkpad_ec_found
= check_dmi_for_ec();
2248 /* these handles are not required */
2249 IBM_HANDLE_INIT(vid
);
2250 IBM_HANDLE_INIT(vid2
);
2251 IBM_HANDLE_INIT(ledb
);
2252 IBM_HANDLE_INIT(led
);
2253 IBM_HANDLE_INIT(hkey
);
2254 IBM_HANDLE_INIT(lght
);
2255 IBM_HANDLE_INIT(cmos
);
2256 #ifdef CONFIG_ACPI_IBM_DOCK
2257 IBM_HANDLE_INIT(dock
);
2259 IBM_HANDLE_INIT(pci
);
2260 IBM_HANDLE_INIT(bay
);
2262 IBM_HANDLE_INIT(bay_ej
);
2263 IBM_HANDLE_INIT(bay2
);
2265 IBM_HANDLE_INIT(bay2_ej
);
2266 IBM_HANDLE_INIT(beep
);
2267 IBM_HANDLE_INIT(ecrd
);
2268 IBM_HANDLE_INIT(ecwr
);
2269 IBM_HANDLE_INIT(fans
);
2270 IBM_HANDLE_INIT(gfan
);
2271 IBM_HANDLE_INIT(sfan
);
2273 proc_dir
= proc_mkdir(IBM_DIR
, acpi_root_dir
);
2275 printk(IBM_ERR
"unable to create proc dir %s", IBM_DIR
);
2278 proc_dir
->owner
= THIS_MODULE
;
2280 for (i
= 0; i
< ARRAY_SIZE(ibms
); i
++) {
2281 ret
= ibm_init(&ibms
[i
]);
2282 if (ret
>= 0 && *ibms
[i
].param
)
2283 ret
= ibms
[i
].write(ibms
[i
].param
);
2290 ibm_backlight_device
= backlight_device_register("ibm", NULL
,
2291 &ibm_backlight_data
);
2292 if (IS_ERR(ibm_backlight_device
)) {
2293 printk(IBM_ERR
"Could not register ibm backlight device\n");
2294 ibm_backlight_device
= NULL
;
2301 module_init(acpi_ibm_init
);
2302 module_exit(acpi_ibm_exit
);