2 * ibm_acpi.c - IBM ThinkPad ACPI Extras
5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
6 * Copyright (C) 2006 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #define IBM_VERSION "0.13"
28 * 2006-11-22 0.13 new maintainer
29 * changelog now lives in git commit history, and will
30 * not be updated further in-file.
32 * 2005-08-17 0.12 fix compilation on 2.6.13-rc kernels
33 * 2005-03-17 0.11 support for 600e, 770x
34 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
35 * support for 770e, G41
36 * G40 and G41 don't have a thinklight
37 * temperatures no longer experimental
38 * experimental brightness control
39 * experimental volume control
40 * experimental fan enable/disable
41 * 2005-01-16 0.10 fix module loading on R30, R31
42 * 2005-01-16 0.9 support for 570, R30, R31
43 * ultrabay support on A22p, A3x
44 * limit arg for cmos, led, beep, drop experimental status
45 * more capable led control on A21e, A22p, T20-22, X20
46 * experimental temperatures and fan speed
47 * experimental embedded controller register dump
48 * mark more functions as __init, drop incorrect __exit
50 * thanks to Henrik Brix Andersen <brix@gentoo.org>
51 * fix parameter passing on module loading
52 * thanks to Rusty Russell <rusty@rustcorp.com.au>
53 * thanks to Jim Radford <radford@blackbean.org>
54 * 2004-11-08 0.8 fix init error case, don't return from a macro
55 * thanks to Chris Wright <chrisw@osdl.org>
56 * 2004-10-23 0.7 fix module loading on A21e, A22p, T20, T21, X20
57 * fix led control on A21e
58 * 2004-10-19 0.6 use acpi_bus_register_driver() to claim HKEY device
59 * 2004-10-18 0.5 thinklight support on A21e, G40, R32, T20, T21, X20
60 * proc file format changed
61 * video_switch command
62 * experimental cmos control
63 * experimental led control
64 * experimental acpi sounds
65 * 2004-09-16 0.4 support for module parameters
66 * hotkey mask can be prefixed by 0x
67 * video output switching
68 * video expansion control
69 * ultrabay eject support
70 * removed lcd brightness/on/off control, didn't work
71 * 2004-08-17 0.3 support for R40
72 * lcd off, brightness control
74 * 2004-08-14 0.2 support for T series, X20
75 * bluetooth enable/disable
76 * hotkey events disabled by default
77 * removed fan control, currently useless
78 * 2004-08-09 0.1 initial release, support for X series
81 #include <linux/kernel.h>
82 #include <linux/module.h>
83 #include <linux/init.h>
84 #include <linux/types.h>
85 #include <linux/string.h>
87 #include <linux/proc_fs.h>
88 #include <linux/backlight.h>
89 #include <asm/uaccess.h>
91 #include <linux/dmi.h>
92 #include <linux/jiffies.h>
93 #include <linux/workqueue.h>
95 #include <acpi/acpi_drivers.h>
96 #include <acpi/acnamesp.h>
98 #define IBM_NAME "ibm"
99 #define IBM_DESC "IBM ThinkPad ACPI Extras"
100 #define IBM_FILE "ibm_acpi"
101 #define IBM_URL "http://ibm-acpi.sf.net/"
103 MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
104 MODULE_DESCRIPTION(IBM_DESC
);
105 MODULE_VERSION(IBM_VERSION
);
106 MODULE_LICENSE("GPL");
108 #define IBM_DIR IBM_NAME
110 #define IBM_LOG IBM_FILE ": "
111 #define IBM_ERR KERN_ERR IBM_LOG
112 #define IBM_NOTICE KERN_NOTICE IBM_LOG
113 #define IBM_INFO KERN_INFO IBM_LOG
114 #define IBM_DEBUG KERN_DEBUG IBM_LOG
116 #define IBM_MAX_ACPI_ARGS 3
118 #define __unused __attribute__ ((unused))
120 static int experimental
;
121 module_param(experimental
, int, 0);
123 static acpi_handle root_handle
= NULL
;
125 #define IBM_HANDLE(object, parent, paths...) \
126 static acpi_handle object##_handle; \
127 static acpi_handle *object##_parent = &parent##_handle; \
128 static char *object##_path; \
129 static char *object##_paths[] = { paths }
131 IBM_HANDLE(ec
, root
, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
132 "\\_SB.PCI.ISA.EC", /* 570 */
133 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
134 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
135 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
136 "\\_SB.PCI0.ICH3.EC0", /* R31 */
137 "\\_SB.PCI0.LPC.EC", /* all others */
140 IBM_HANDLE(vid
, root
, "\\_SB.PCI.AGP.VGA", /* 570 */
141 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
142 "\\_SB.PCI0.VID0", /* 770e */
143 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
144 "\\_SB.PCI0.AGP.VID", /* all others */
147 IBM_HANDLE(vid2
, root
, "\\_SB.PCI0.AGPB.VID"); /* G41 */
149 IBM_HANDLE(cmos
, root
, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */
150 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
151 "\\CMS", /* R40, R40e */
153 #ifdef CONFIG_ACPI_IBM_DOCK
154 IBM_HANDLE(dock
, root
, "\\_SB.GDCK", /* X30, X31, X40 */
155 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
156 "\\_SB.PCI0.PCI1.DOCK", /* all others */
157 "\\_SB.PCI.ISA.SLCE", /* 570 */
158 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
160 #ifdef CONFIG_ACPI_IBM_BAY
161 IBM_HANDLE(bay
, root
, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
162 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
163 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
164 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
165 ); /* A21e, R30, R31 */
167 IBM_HANDLE(bay_ej
, bay
, "_EJ3", /* 600e/x, A2xm/p, A3x */
168 "_EJ0", /* all others */
169 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
171 IBM_HANDLE(bay2
, root
, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
172 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
175 IBM_HANDLE(bay2_ej
, bay2
, "_EJ3", /* 600e/x, 770e, A3x */
180 /* don't list other alternatives as we install a notify handler on the 570 */
181 IBM_HANDLE(pci
, root
, "\\_SB.PCI"); /* 570 */
183 IBM_HANDLE(hkey
, ec
, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
184 "^HKEY", /* R30, R31 */
185 "HKEY", /* all others */
188 IBM_HANDLE(lght
, root
, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
189 IBM_HANDLE(ledb
, ec
, "LEDB"); /* G4x */
191 IBM_HANDLE(led
, ec
, "SLED", /* 570 */
192 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
193 "LED", /* all others */
196 IBM_HANDLE(beep
, ec
, "BEEP"); /* all except R30, R31 */
197 IBM_HANDLE(ecrd
, ec
, "ECRD"); /* 570 */
198 IBM_HANDLE(ecwr
, ec
, "ECWR"); /* 570 */
199 IBM_HANDLE(fans
, ec
, "FANS"); /* X31, X40, X41 */
201 IBM_HANDLE(gfan
, ec
, "GFAN", /* 570 */
202 "\\FSPD", /* 600e/x, 770e, 770x */
205 IBM_HANDLE(sfan
, ec
, "SFAN", /* 570 */
206 "JFNS", /* 770x-JL */
209 #define IBM_HKEY_HID "IBM0068"
210 #define IBM_PCI_HID "PNP0A03"
212 enum thermal_access_mode
{
213 IBMACPI_THERMAL_NONE
= 0, /* No thermal support */
214 IBMACPI_THERMAL_ACPI_TMP07
, /* Use ACPI TMP0-7 */
215 IBMACPI_THERMAL_ACPI_UPDT
, /* Use ACPI TMP0-7 with UPDT */
216 IBMACPI_THERMAL_TPEC_8
, /* Use ACPI EC regs, 8 sensors */
217 IBMACPI_THERMAL_TPEC_16
, /* Use ACPI EC regs, 16 sensors */
220 #define IBMACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
221 struct ibm_thermal_sensors_struct
{
222 s32 temp
[IBMACPI_MAX_THERMAL_SENSORS
];
228 * IBMACPI_FAN_RD_ACPI_GFAN:
229 * ACPI GFAN method: returns fan level
231 * see IBMACPI_FAN_WR_ACPI_SFAN
232 * EC 0x2f not available if GFAN exists
234 * IBMACPI_FAN_WR_ACPI_SFAN:
235 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
237 * EC 0x2f might be available *for reading*, but never for writing.
239 * IBMACPI_FAN_WR_TPEC:
240 * ThinkPad EC register 0x2f (HFSP): fan control loop mode Supported
241 * on almost all ThinkPads
243 * Fan speed changes of any sort (including those caused by the
244 * disengaged mode) are usually done slowly by the firmware as the
245 * maximum ammount of fan duty cycle change per second seems to be
248 * Reading is not available if GFAN exists.
249 * Writing is not available if SFAN exists.
252 * 7 automatic mode engaged;
253 * (default operation mode of the ThinkPad)
254 * fan level is ignored in this mode.
255 * 6 disengage mode (takes precedence over bit 7);
256 * not available on all thinkpads. May disable
257 * the tachometer, and speeds up fan to 100% duty-cycle,
258 * which speeds it up far above the standard RPM
259 * levels. It is not impossible that it could cause
261 * 5-3 unused in some models. Extra bits for fan level
262 * in others, but still useless as all values above
263 * 7 map to the same speed as level 7 in these models.
264 * 2-0 fan level (0..7 usually)
266 * 0x07 = max (set when temperatures critical)
267 * Some ThinkPads may have other levels, see
268 * IBMACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
270 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
271 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
272 * does so, its initial value is meaningless (0x07).
274 * For firmware bugs, refer to:
275 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
279 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
280 * Main fan tachometer reading (in RPM)
282 * This register is present on all ThinkPads with a new-style EC, and
283 * it is known not to be present on the A21m/e, and T22, as there is
284 * something else in offset 0x84 according to the ACPI DSDT. Other
285 * ThinkPads from this same time period (and earlier) probably lack the
286 * tachometer as well.
288 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
289 * was never fixed by IBM to report the EC firmware version string
290 * probably support the tachometer (like the early X models), so
291 * detecting it is quite hard. We need more data to know for sure.
293 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
296 * FIRMWARE BUG: when EC 0x2f bit 6 is set (disengaged mode), this
297 * register is not invalidated in ThinkPads that disable tachometer
298 * readings. Thus, the tachometer readings go stale.
300 * For firmware bugs, refer to:
301 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
303 * IBMACPI_FAN_WR_ACPI_FANS:
304 * ThinkPad X31, X40, X41. Not available in the X60.
306 * FANS ACPI handle: takes three arguments: low speed, medium speed,
307 * high speed. ACPI DSDT seems to map these three speeds to levels
308 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
309 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
311 * The speeds are stored on handles
312 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
314 * There are three default speed sets, acessible as handles:
315 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
317 * ACPI DSDT switches which set is in use depending on various
320 * IBMACPI_FAN_WR_TPEC is also available and should be used to
321 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
322 * but the ACPI tables just mention level 7.
325 enum fan_status_access_mode
{
326 IBMACPI_FAN_NONE
= 0, /* No fan status or control */
327 IBMACPI_FAN_RD_ACPI_GFAN
, /* Use ACPI GFAN */
328 IBMACPI_FAN_RD_TPEC
, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
331 enum fan_control_access_mode
{
332 IBMACPI_FAN_WR_NONE
= 0, /* No fan control */
333 IBMACPI_FAN_WR_ACPI_SFAN
, /* Use ACPI SFAN */
334 IBMACPI_FAN_WR_TPEC
, /* Use ACPI EC reg 0x2f */
335 IBMACPI_FAN_WR_ACPI_FANS
, /* Use ACPI FANS and EC reg 0x2f */
338 enum fan_control_commands
{
339 IBMACPI_FAN_CMD_SPEED
= 0x0001, /* speed command */
340 IBMACPI_FAN_CMD_LEVEL
= 0x0002, /* level command */
341 IBMACPI_FAN_CMD_ENABLE
= 0x0004, /* enable/disable cmd,
342 * and also watchdog cmd */
345 enum { /* Fan control constants */
346 fan_status_offset
= 0x2f, /* EC register 0x2f */
347 fan_rpm_offset
= 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
348 * 0x84 must be read before 0x85 */
350 IBMACPI_FAN_EC_DISENGAGED
= 0x40, /* EC mode: tachometer
352 IBMACPI_FAN_EC_AUTO
= 0x80, /* EC mode: auto fan
356 static char *ibm_thinkpad_ec_found
= NULL
;
363 struct acpi_driver
*driver
;
366 int (*read
) (char *);
367 int (*write
) (char *);
370 void (*notify
) (struct ibm_struct
*, u32
);
373 struct acpi_device
*device
;
375 int driver_registered
;
378 int notify_installed
;
383 static struct proc_dir_entry
*proc_dir
= NULL
;
385 static struct backlight_device
*ibm_backlight_device
= NULL
;
387 #define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off")
388 #define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
389 #define strlencmp(a,b) (strncmp((a), (b), strlen(b)))
391 static int acpi_evalf(acpi_handle handle
,
392 void *res
, char *method
, char *fmt
, ...)
395 struct acpi_object_list params
;
396 union acpi_object in_objs
[IBM_MAX_ACPI_ARGS
];
397 struct acpi_buffer result
, *resultp
;
398 union acpi_object out_obj
;
406 printk(IBM_ERR
"acpi_evalf() called with empty format\n");
419 params
.pointer
= &in_objs
[0];
426 in_objs
[params
.count
].integer
.value
= va_arg(ap
, int);
427 in_objs
[params
.count
++].type
= ACPI_TYPE_INTEGER
;
429 /* add more types as needed */
431 printk(IBM_ERR
"acpi_evalf() called "
432 "with invalid format character '%c'\n", c
);
438 if (res_type
!= 'v') {
439 result
.length
= sizeof(out_obj
);
440 result
.pointer
= &out_obj
;
445 status
= acpi_evaluate_object(handle
, method
, ¶ms
, resultp
);
450 *(int *)res
= out_obj
.integer
.value
;
451 success
= status
== AE_OK
&& out_obj
.type
== ACPI_TYPE_INTEGER
;
454 success
= status
== AE_OK
;
456 /* add more types as needed */
458 printk(IBM_ERR
"acpi_evalf() called "
459 "with invalid format character '%c'\n", res_type
);
463 if (!success
&& !quiet
)
464 printk(IBM_ERR
"acpi_evalf(%s, %s, ...) failed: %d\n",
465 method
, fmt0
, status
);
470 static void __unused
acpi_print_int(acpi_handle handle
, char *method
)
474 if (acpi_evalf(handle
, &i
, method
, "d"))
475 printk(IBM_INFO
"%s = 0x%x\n", method
, i
);
477 printk(IBM_ERR
"error calling %s\n", method
);
480 static char *next_cmd(char **cmds
)
485 while ((end
= strchr(start
, ',')) && end
== start
)
496 static int ibm_acpi_driver_init(void)
498 printk(IBM_INFO
"%s v%s\n", IBM_DESC
, IBM_VERSION
);
499 printk(IBM_INFO
"%s\n", IBM_URL
);
504 static int driver_read(char *p
)
508 len
+= sprintf(p
+ len
, "driver:\t\t%s\n", IBM_DESC
);
509 len
+= sprintf(p
+ len
, "version:\t%s\n", IBM_VERSION
);
514 static int hotkey_supported
;
515 static int hotkey_mask_supported
;
516 static int hotkey_orig_status
;
517 static int hotkey_orig_mask
;
519 static int hotkey_get(int *status
, int *mask
)
521 if (!acpi_evalf(hkey_handle
, status
, "DHKC", "d"))
524 if (hotkey_mask_supported
)
525 if (!acpi_evalf(hkey_handle
, mask
, "DHKN", "d"))
531 static int hotkey_set(int status
, int mask
)
535 if (!acpi_evalf(hkey_handle
, NULL
, "MHKC", "vd", status
))
538 if (hotkey_mask_supported
)
539 for (i
= 0; i
< 32; i
++) {
540 int bit
= ((1 << i
) & mask
) != 0;
541 if (!acpi_evalf(hkey_handle
,
542 NULL
, "MHKM", "vdd", i
+ 1, bit
))
549 static int hotkey_init(void)
551 /* hotkey not supported on 570 */
552 hotkey_supported
= hkey_handle
!= NULL
;
554 if (hotkey_supported
) {
555 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
556 A30, R30, R31, T20-22, X20-21, X22-24 */
557 hotkey_mask_supported
=
558 acpi_evalf(hkey_handle
, NULL
, "DHKN", "qv");
560 if (!hotkey_get(&hotkey_orig_status
, &hotkey_orig_mask
))
567 static int hotkey_read(char *p
)
572 if (!hotkey_supported
) {
573 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
577 if (!hotkey_get(&status
, &mask
))
580 len
+= sprintf(p
+ len
, "status:\t\t%s\n", enabled(status
, 0));
581 if (hotkey_mask_supported
) {
582 len
+= sprintf(p
+ len
, "mask:\t\t0x%04x\n", mask
);
583 len
+= sprintf(p
+ len
,
584 "commands:\tenable, disable, reset, <mask>\n");
586 len
+= sprintf(p
+ len
, "mask:\t\tnot supported\n");
587 len
+= sprintf(p
+ len
, "commands:\tenable, disable, reset\n");
593 static int hotkey_write(char *buf
)
599 if (!hotkey_supported
)
602 if (!hotkey_get(&status
, &mask
))
605 while ((cmd
= next_cmd(&buf
))) {
606 if (strlencmp(cmd
, "enable") == 0) {
608 } else if (strlencmp(cmd
, "disable") == 0) {
610 } else if (strlencmp(cmd
, "reset") == 0) {
611 status
= hotkey_orig_status
;
612 mask
= hotkey_orig_mask
;
613 } else if (sscanf(cmd
, "0x%x", &mask
) == 1) {
615 } else if (sscanf(cmd
, "%x", &mask
) == 1) {
622 if (do_cmd
&& !hotkey_set(status
, mask
))
628 static void hotkey_exit(void)
630 if (hotkey_supported
)
631 hotkey_set(hotkey_orig_status
, hotkey_orig_mask
);
634 static void hotkey_notify(struct ibm_struct
*ibm
, u32 event
)
638 if (acpi_evalf(hkey_handle
, &hkey
, "MHKP", "d"))
639 acpi_bus_generate_event(ibm
->device
, event
, hkey
);
641 printk(IBM_ERR
"unknown hotkey event %d\n", event
);
642 acpi_bus_generate_event(ibm
->device
, event
, 0);
646 static int bluetooth_supported
;
648 static int bluetooth_init(void)
650 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
651 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
652 bluetooth_supported
= hkey_handle
&&
653 acpi_evalf(hkey_handle
, NULL
, "GBDC", "qv");
658 static int bluetooth_status(void)
662 if (!bluetooth_supported
||
663 !acpi_evalf(hkey_handle
, &status
, "GBDC", "d"))
669 static int bluetooth_read(char *p
)
672 int status
= bluetooth_status();
674 if (!bluetooth_supported
)
675 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
676 else if (!(status
& 1))
677 len
+= sprintf(p
+ len
, "status:\t\tnot installed\n");
679 len
+= sprintf(p
+ len
, "status:\t\t%s\n", enabled(status
, 1));
680 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n");
686 static int bluetooth_write(char *buf
)
688 int status
= bluetooth_status();
692 if (!bluetooth_supported
)
695 while ((cmd
= next_cmd(&buf
))) {
696 if (strlencmp(cmd
, "enable") == 0) {
698 } else if (strlencmp(cmd
, "disable") == 0) {
705 if (do_cmd
&& !acpi_evalf(hkey_handle
, NULL
, "SBDC", "vd", status
))
711 static int wan_supported
;
713 static int wan_init(void)
715 wan_supported
= hkey_handle
&&
716 acpi_evalf(hkey_handle
, NULL
, "GWAN", "qv");
721 static int wan_status(void)
725 if (!wan_supported
|| !acpi_evalf(hkey_handle
, &status
, "GWAN", "d"))
731 static int wan_read(char *p
)
734 int status
= wan_status();
737 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
738 else if (!(status
& 1))
739 len
+= sprintf(p
+ len
, "status:\t\tnot installed\n");
741 len
+= sprintf(p
+ len
, "status:\t\t%s\n", enabled(status
, 1));
742 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n");
748 static int wan_write(char *buf
)
750 int status
= wan_status();
757 while ((cmd
= next_cmd(&buf
))) {
758 if (strlencmp(cmd
, "enable") == 0) {
760 } else if (strlencmp(cmd
, "disable") == 0) {
767 if (do_cmd
&& !acpi_evalf(hkey_handle
, NULL
, "SWAN", "vd", status
))
773 enum video_access_mode
{
774 IBMACPI_VIDEO_NONE
= 0,
775 IBMACPI_VIDEO_570
, /* 570 */
776 IBMACPI_VIDEO_770
, /* 600e/x, 770e, 770x */
777 IBMACPI_VIDEO_NEW
, /* all others */
780 static enum video_access_mode video_supported
;
781 static int video_orig_autosw
;
783 static int video_init(void)
787 if (vid2_handle
&& acpi_evalf(NULL
, &ivga
, "\\IVGA", "d") && ivga
)
788 /* G41, assume IVGA doesn't change */
789 vid_handle
= vid2_handle
;
792 /* video switching not supported on R30, R31 */
793 video_supported
= IBMACPI_VIDEO_NONE
;
794 else if (acpi_evalf(vid_handle
, &video_orig_autosw
, "SWIT", "qd"))
796 video_supported
= IBMACPI_VIDEO_570
;
797 else if (acpi_evalf(vid_handle
, &video_orig_autosw
, "^VADL", "qd"))
798 /* 600e/x, 770e, 770x */
799 video_supported
= IBMACPI_VIDEO_770
;
802 video_supported
= IBMACPI_VIDEO_NEW
;
807 static int video_status(void)
812 if (video_supported
== IBMACPI_VIDEO_570
) {
813 if (acpi_evalf(NULL
, &i
, "\\_SB.PHS", "dd", 0x87))
815 } else if (video_supported
== IBMACPI_VIDEO_770
) {
816 if (acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
818 if (acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
820 } else if (video_supported
== IBMACPI_VIDEO_NEW
) {
821 acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 1);
822 if (acpi_evalf(NULL
, &i
, "\\VCDC", "d"))
825 acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0);
826 if (acpi_evalf(NULL
, &i
, "\\VCDL", "d"))
828 if (acpi_evalf(NULL
, &i
, "\\VCDD", "d"))
835 static int video_autosw(void)
839 if (video_supported
== IBMACPI_VIDEO_570
)
840 acpi_evalf(vid_handle
, &autosw
, "SWIT", "d");
841 else if (video_supported
== IBMACPI_VIDEO_770
||
842 video_supported
== IBMACPI_VIDEO_NEW
)
843 acpi_evalf(vid_handle
, &autosw
, "^VDEE", "d");
848 static int video_read(char *p
)
850 int status
= video_status();
851 int autosw
= video_autosw();
854 if (!video_supported
) {
855 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
859 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
860 len
+= sprintf(p
+ len
, "lcd:\t\t%s\n", enabled(status
, 0));
861 len
+= sprintf(p
+ len
, "crt:\t\t%s\n", enabled(status
, 1));
862 if (video_supported
== IBMACPI_VIDEO_NEW
)
863 len
+= sprintf(p
+ len
, "dvi:\t\t%s\n", enabled(status
, 3));
864 len
+= sprintf(p
+ len
, "auto:\t\t%s\n", enabled(autosw
, 0));
865 len
+= sprintf(p
+ len
, "commands:\tlcd_enable, lcd_disable\n");
866 len
+= sprintf(p
+ len
, "commands:\tcrt_enable, crt_disable\n");
867 if (video_supported
== IBMACPI_VIDEO_NEW
)
868 len
+= sprintf(p
+ len
, "commands:\tdvi_enable, dvi_disable\n");
869 len
+= sprintf(p
+ len
, "commands:\tauto_enable, auto_disable\n");
870 len
+= sprintf(p
+ len
, "commands:\tvideo_switch, expand_toggle\n");
875 static int video_switch(void)
877 int autosw
= video_autosw();
880 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", 1))
882 ret
= video_supported
== IBMACPI_VIDEO_570
?
883 acpi_evalf(ec_handle
, NULL
, "_Q16", "v") :
884 acpi_evalf(vid_handle
, NULL
, "VSWT", "v");
885 acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", autosw
);
890 static int video_expand(void)
892 if (video_supported
== IBMACPI_VIDEO_570
)
893 return acpi_evalf(ec_handle
, NULL
, "_Q17", "v");
894 else if (video_supported
== IBMACPI_VIDEO_770
)
895 return acpi_evalf(vid_handle
, NULL
, "VEXP", "v");
897 return acpi_evalf(NULL
, NULL
, "\\VEXP", "v");
900 static int video_switch2(int status
)
904 if (video_supported
== IBMACPI_VIDEO_570
) {
905 ret
= acpi_evalf(NULL
, NULL
,
906 "\\_SB.PHS2", "vdd", 0x8b, status
| 0x80);
907 } else if (video_supported
== IBMACPI_VIDEO_770
) {
908 int autosw
= video_autosw();
909 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", 1))
912 ret
= acpi_evalf(vid_handle
, NULL
,
913 "ASWT", "vdd", status
* 0x100, 0);
915 acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", autosw
);
917 ret
= acpi_evalf(NULL
, NULL
, "\\VUPS", "vd", 0x80) &&
918 acpi_evalf(NULL
, NULL
, "\\VSDS", "vdd", status
, 1);
924 static int video_write(char *buf
)
927 int enable
, disable
, status
;
929 if (!video_supported
)
932 enable
= disable
= 0;
934 while ((cmd
= next_cmd(&buf
))) {
935 if (strlencmp(cmd
, "lcd_enable") == 0) {
937 } else if (strlencmp(cmd
, "lcd_disable") == 0) {
939 } else if (strlencmp(cmd
, "crt_enable") == 0) {
941 } else if (strlencmp(cmd
, "crt_disable") == 0) {
943 } else if (video_supported
== IBMACPI_VIDEO_NEW
&&
944 strlencmp(cmd
, "dvi_enable") == 0) {
946 } else if (video_supported
== IBMACPI_VIDEO_NEW
&&
947 strlencmp(cmd
, "dvi_disable") == 0) {
949 } else if (strlencmp(cmd
, "auto_enable") == 0) {
950 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", 1))
952 } else if (strlencmp(cmd
, "auto_disable") == 0) {
953 if (!acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", 0))
955 } else if (strlencmp(cmd
, "video_switch") == 0) {
958 } else if (strlencmp(cmd
, "expand_toggle") == 0) {
965 if (enable
|| disable
) {
966 status
= (video_status() & 0x0f & ~disable
) | enable
;
967 if (!video_switch2(status
))
974 static void video_exit(void)
976 acpi_evalf(vid_handle
, NULL
, "_DOS", "vd", video_orig_autosw
);
979 static int light_supported
;
980 static int light_status_supported
;
982 static int light_init(void)
984 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
985 light_supported
= (cmos_handle
|| lght_handle
) && !ledb_handle
;
988 /* light status not supported on
989 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
990 light_status_supported
= acpi_evalf(ec_handle
, NULL
,
996 static int light_read(char *p
)
1001 if (!light_supported
) {
1002 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
1003 } else if (!light_status_supported
) {
1004 len
+= sprintf(p
+ len
, "status:\t\tunknown\n");
1005 len
+= sprintf(p
+ len
, "commands:\ton, off\n");
1007 if (!acpi_evalf(ec_handle
, &status
, "KBLT", "d"))
1009 len
+= sprintf(p
+ len
, "status:\t\t%s\n", onoff(status
, 0));
1010 len
+= sprintf(p
+ len
, "commands:\ton, off\n");
1016 static int light_write(char *buf
)
1018 int cmos_cmd
, lght_cmd
;
1022 if (!light_supported
)
1025 while ((cmd
= next_cmd(&buf
))) {
1026 if (strlencmp(cmd
, "on") == 0) {
1029 } else if (strlencmp(cmd
, "off") == 0) {
1035 success
= cmos_handle
?
1036 acpi_evalf(cmos_handle
, NULL
, NULL
, "vd", cmos_cmd
) :
1037 acpi_evalf(lght_handle
, NULL
, NULL
, "vd", lght_cmd
);
1045 #if defined(CONFIG_ACPI_IBM_DOCK) || defined(CONFIG_ACPI_IBM_BAY)
1046 static int _sta(acpi_handle handle
)
1050 if (!handle
|| !acpi_evalf(handle
, &status
, "_STA", "d"))
1056 #ifdef CONFIG_ACPI_IBM_DOCK
1057 #define dock_docked() (_sta(dock_handle) & 1)
1059 static int dock_read(char *p
)
1062 int docked
= dock_docked();
1065 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
1067 len
+= sprintf(p
+ len
, "status:\t\tundocked\n");
1069 len
+= sprintf(p
+ len
, "status:\t\tdocked\n");
1070 len
+= sprintf(p
+ len
, "commands:\tdock, undock\n");
1076 static int dock_write(char *buf
)
1083 while ((cmd
= next_cmd(&buf
))) {
1084 if (strlencmp(cmd
, "undock") == 0) {
1085 if (!acpi_evalf(dock_handle
, NULL
, "_DCK", "vd", 0) ||
1086 !acpi_evalf(dock_handle
, NULL
, "_EJ0", "vd", 1))
1088 } else if (strlencmp(cmd
, "dock") == 0) {
1089 if (!acpi_evalf(dock_handle
, NULL
, "_DCK", "vd", 1))
1098 static void dock_notify(struct ibm_struct
*ibm
, u32 event
)
1100 int docked
= dock_docked();
1101 int pci
= ibm
->hid
&& strstr(ibm
->hid
, IBM_PCI_HID
);
1103 if (event
== 1 && !pci
) /* 570 */
1104 acpi_bus_generate_event(ibm
->device
, event
, 1); /* button */
1105 else if (event
== 1 && pci
) /* 570 */
1106 acpi_bus_generate_event(ibm
->device
, event
, 3); /* dock */
1107 else if (event
== 3 && docked
)
1108 acpi_bus_generate_event(ibm
->device
, event
, 1); /* button */
1109 else if (event
== 3 && !docked
)
1110 acpi_bus_generate_event(ibm
->device
, event
, 2); /* undock */
1111 else if (event
== 0 && docked
)
1112 acpi_bus_generate_event(ibm
->device
, event
, 3); /* dock */
1114 printk(IBM_ERR
"unknown dock event %d, status %d\n",
1115 event
, _sta(dock_handle
));
1116 acpi_bus_generate_event(ibm
->device
, event
, 0); /* unknown */
1121 #ifdef CONFIG_ACPI_IBM_BAY
1122 static int bay_status_supported
;
1123 static int bay_status2_supported
;
1124 static int bay_eject_supported
;
1125 static int bay_eject2_supported
;
1127 static int bay_init(void)
1129 bay_status_supported
= bay_handle
&&
1130 acpi_evalf(bay_handle
, NULL
, "_STA", "qv");
1131 bay_status2_supported
= bay2_handle
&&
1132 acpi_evalf(bay2_handle
, NULL
, "_STA", "qv");
1134 bay_eject_supported
= bay_handle
&& bay_ej_handle
&&
1135 (strlencmp(bay_ej_path
, "_EJ0") == 0 || experimental
);
1136 bay_eject2_supported
= bay2_handle
&& bay2_ej_handle
&&
1137 (strlencmp(bay2_ej_path
, "_EJ0") == 0 || experimental
);
1142 #define bay_occupied(b) (_sta(b##_handle) & 1)
1144 static int bay_read(char *p
)
1147 int occupied
= bay_occupied(bay
);
1148 int occupied2
= bay_occupied(bay2
);
1151 len
+= sprintf(p
+ len
, "status:\t\t%s\n", bay_status_supported
?
1152 (occupied
? "occupied" : "unoccupied") :
1154 if (bay_status2_supported
)
1155 len
+= sprintf(p
+ len
, "status2:\t%s\n", occupied2
?
1156 "occupied" : "unoccupied");
1158 eject
= bay_eject_supported
&& occupied
;
1159 eject2
= bay_eject2_supported
&& occupied2
;
1161 if (eject
&& eject2
)
1162 len
+= sprintf(p
+ len
, "commands:\teject, eject2\n");
1164 len
+= sprintf(p
+ len
, "commands:\teject\n");
1166 len
+= sprintf(p
+ len
, "commands:\teject2\n");
1171 static int bay_write(char *buf
)
1175 if (!bay_eject_supported
&& !bay_eject2_supported
)
1178 while ((cmd
= next_cmd(&buf
))) {
1179 if (bay_eject_supported
&& strlencmp(cmd
, "eject") == 0) {
1180 if (!acpi_evalf(bay_ej_handle
, NULL
, NULL
, "vd", 1))
1182 } else if (bay_eject2_supported
&&
1183 strlencmp(cmd
, "eject2") == 0) {
1184 if (!acpi_evalf(bay2_ej_handle
, NULL
, NULL
, "vd", 1))
1193 static void bay_notify(struct ibm_struct
*ibm
, u32 event
)
1195 acpi_bus_generate_event(ibm
->device
, event
, 0);
1199 static int cmos_read(char *p
)
1203 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
1204 R30, R31, T20-22, X20-21 */
1206 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
1208 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
1209 len
+= sprintf(p
+ len
, "commands:\t<cmd> (<cmd> is 0-21)\n");
1215 static int cmos_eval(int cmos_cmd
)
1218 return acpi_evalf(cmos_handle
, NULL
, NULL
, "vd", cmos_cmd
);
1223 static int cmos_write(char *buf
)
1231 while ((cmd
= next_cmd(&buf
))) {
1232 if (sscanf(cmd
, "%u", &cmos_cmd
) == 1 &&
1233 cmos_cmd
>= 0 && cmos_cmd
<= 21) {
1238 if (!cmos_eval(cmos_cmd
))
1245 enum led_access_mode
{
1246 IBMACPI_LED_NONE
= 0,
1247 IBMACPI_LED_570
, /* 570 */
1248 IBMACPI_LED_OLD
, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
1249 IBMACPI_LED_NEW
, /* all others */
1251 static enum led_access_mode led_supported
;
1253 static int led_init(void)
1256 /* led not supported on R30, R31 */
1257 led_supported
= IBMACPI_LED_NONE
;
1258 else if (strlencmp(led_path
, "SLED") == 0)
1260 led_supported
= IBMACPI_LED_570
;
1261 else if (strlencmp(led_path
, "SYSL") == 0)
1262 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
1263 led_supported
= IBMACPI_LED_OLD
;
1266 led_supported
= IBMACPI_LED_NEW
;
1271 #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking"))
1273 static int led_read(char *p
)
1277 if (!led_supported
) {
1278 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
1281 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
1283 if (led_supported
== IBMACPI_LED_570
) {
1286 for (i
= 0; i
< 8; i
++) {
1287 if (!acpi_evalf(ec_handle
,
1288 &status
, "GLED", "dd", 1 << i
))
1290 len
+= sprintf(p
+ len
, "%d:\t\t%s\n",
1291 i
, led_status(status
));
1295 len
+= sprintf(p
+ len
, "commands:\t"
1296 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1301 /* off, on, blink */
1302 static const int led_sled_arg1
[] = { 0, 1, 3 };
1303 static const int led_exp_hlbl
[] = { 0, 0, 1 }; /* led# * */
1304 static const int led_exp_hlcl
[] = { 0, 1, 1 }; /* led# * */
1305 static const int led_led_arg1
[] = { 0, 0x80, 0xc0 };
1307 #define EC_HLCL 0x0c
1308 #define EC_HLBL 0x0d
1309 #define EC_HLMS 0x0e
1311 static int led_write(char *buf
)
1319 while ((cmd
= next_cmd(&buf
))) {
1320 if (sscanf(cmd
, "%d", &led
) != 1 || led
< 0 || led
> 7)
1323 if (strstr(cmd
, "off")) {
1325 } else if (strstr(cmd
, "on")) {
1327 } else if (strstr(cmd
, "blink")) {
1332 if (led_supported
== IBMACPI_LED_570
) {
1335 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
1336 led
, led_sled_arg1
[ind
]))
1338 } else if (led_supported
== IBMACPI_LED_OLD
) {
1339 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
1341 ret
= ec_write(EC_HLMS
, led
);
1344 ec_write(EC_HLBL
, led
* led_exp_hlbl
[ind
]);
1347 ec_write(EC_HLCL
, led
* led_exp_hlcl
[ind
]);
1352 if (!acpi_evalf(led_handle
, NULL
, NULL
, "vdd",
1353 led
, led_led_arg1
[ind
]))
1361 static int beep_read(char *p
)
1366 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
1368 len
+= sprintf(p
+ len
, "status:\t\tsupported\n");
1369 len
+= sprintf(p
+ len
, "commands:\t<cmd> (<cmd> is 0-17)\n");
1375 static int beep_write(char *buf
)
1383 while ((cmd
= next_cmd(&buf
))) {
1384 if (sscanf(cmd
, "%u", &beep_cmd
) == 1 &&
1385 beep_cmd
>= 0 && beep_cmd
<= 17) {
1389 if (!acpi_evalf(beep_handle
, NULL
, NULL
, "vdd", beep_cmd
, 0))
1396 static int acpi_ec_read(int i
, u8
* p
)
1401 if (!acpi_evalf(ecrd_handle
, &v
, NULL
, "dd", i
))
1405 if (ec_read(i
, p
) < 0)
1412 static int acpi_ec_write(int i
, u8 v
)
1415 if (!acpi_evalf(ecwr_handle
, NULL
, NULL
, "vdd", i
, v
))
1418 if (ec_write(i
, v
) < 0)
1425 static enum thermal_access_mode thermal_read_mode
;
1427 static int thermal_init(void)
1431 int acpi_tmp7
= acpi_evalf(ec_handle
, NULL
, "TMP7", "qv");
1433 if (ibm_thinkpad_ec_found
&& experimental
) {
1435 * Direct EC access mode: sensors at registers
1436 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
1437 * non-implemented, thermal sensors return 0x80 when
1442 for (i
= 0; i
< 8; i
++) {
1443 if (likely(acpi_ec_read(0x78 + i
, &t
))) {
1449 if (likely(acpi_ec_read(0xC0 + i
, &t
))) {
1457 /* This is sheer paranoia, but we handle it anyway */
1460 "ThinkPad ACPI EC access misbehaving, "
1461 "falling back to ACPI TMPx access mode\n");
1462 thermal_read_mode
= IBMACPI_THERMAL_ACPI_TMP07
;
1465 "ThinkPad ACPI EC access misbehaving, "
1466 "disabling thermal sensors access\n");
1467 thermal_read_mode
= IBMACPI_THERMAL_NONE
;
1472 IBMACPI_THERMAL_TPEC_16
: IBMACPI_THERMAL_TPEC_8
;
1474 } else if (acpi_tmp7
) {
1475 if (acpi_evalf(ec_handle
, NULL
, "UPDT", "qv")) {
1476 /* 600e/x, 770e, 770x */
1477 thermal_read_mode
= IBMACPI_THERMAL_ACPI_UPDT
;
1479 /* Standard ACPI TMPx access, max 8 sensors */
1480 thermal_read_mode
= IBMACPI_THERMAL_ACPI_TMP07
;
1483 /* temperatures not supported on 570, G4x, R30, R31, R32 */
1484 thermal_read_mode
= IBMACPI_THERMAL_NONE
;
1490 static int thermal_get_sensors(struct ibm_thermal_sensors_struct
*s
)
1494 char tmpi
[] = "TMPi";
1499 switch (thermal_read_mode
) {
1500 #if IBMACPI_MAX_THERMAL_SENSORS >= 16
1501 case IBMACPI_THERMAL_TPEC_16
:
1502 for (i
= 0; i
< 8; i
++) {
1503 if (!acpi_ec_read(0xC0 + i
, &tmp
))
1505 s
->temp
[i
+ 8] = tmp
* 1000;
1509 case IBMACPI_THERMAL_TPEC_8
:
1510 for (i
= 0; i
< 8; i
++) {
1511 if (!acpi_ec_read(0x78 + i
, &tmp
))
1513 s
->temp
[i
] = tmp
* 1000;
1515 return (thermal_read_mode
== IBMACPI_THERMAL_TPEC_16
) ? 16 : 8;
1517 case IBMACPI_THERMAL_ACPI_UPDT
:
1518 if (!acpi_evalf(ec_handle
, NULL
, "UPDT", "v"))
1520 for (i
= 0; i
< 8; i
++) {
1522 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
1524 s
->temp
[i
] = (t
- 2732) * 100;
1528 case IBMACPI_THERMAL_ACPI_TMP07
:
1529 for (i
= 0; i
< 8; i
++) {
1531 if (!acpi_evalf(ec_handle
, &t
, tmpi
, "d"))
1533 s
->temp
[i
] = t
* 1000;
1537 case IBMACPI_THERMAL_NONE
:
1543 static int thermal_read(char *p
)
1547 struct ibm_thermal_sensors_struct t
;
1549 n
= thermal_get_sensors(&t
);
1550 if (unlikely(n
< 0))
1553 len
+= sprintf(p
+ len
, "temperatures:\t");
1556 for (i
= 0; i
< (n
- 1); i
++)
1557 len
+= sprintf(p
+ len
, "%d ", t
.temp
[i
] / 1000);
1558 len
+= sprintf(p
+ len
, "%d\n", t
.temp
[i
] / 1000);
1560 len
+= sprintf(p
+ len
, "not supported\n");
1565 static u8 ecdump_regs
[256];
1567 static int ecdump_read(char *p
)
1573 len
+= sprintf(p
+ len
, "EC "
1574 " +00 +01 +02 +03 +04 +05 +06 +07"
1575 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
1576 for (i
= 0; i
< 256; i
+= 16) {
1577 len
+= sprintf(p
+ len
, "EC 0x%02x:", i
);
1578 for (j
= 0; j
< 16; j
++) {
1579 if (!acpi_ec_read(i
+ j
, &v
))
1581 if (v
!= ecdump_regs
[i
+ j
])
1582 len
+= sprintf(p
+ len
, " *%02x", v
);
1584 len
+= sprintf(p
+ len
, " %02x", v
);
1585 ecdump_regs
[i
+ j
] = v
;
1587 len
+= sprintf(p
+ len
, "\n");
1592 /* These are way too dangerous to advertise openly... */
1594 len
+= sprintf(p
+ len
, "commands:\t0x<offset> 0x<value>"
1595 " (<offset> is 00-ff, <value> is 00-ff)\n");
1596 len
+= sprintf(p
+ len
, "commands:\t0x<offset> <value> "
1597 " (<offset> is 00-ff, <value> is 0-255)\n");
1602 static int ecdump_write(char *buf
)
1607 while ((cmd
= next_cmd(&buf
))) {
1608 if (sscanf(cmd
, "0x%x 0x%x", &i
, &v
) == 2) {
1610 } else if (sscanf(cmd
, "0x%x %u", &i
, &v
) == 2) {
1614 if (i
>= 0 && i
< 256 && v
>= 0 && v
< 256) {
1615 if (!acpi_ec_write(i
, v
))
1624 static int brightness_offset
= 0x31;
1626 static int brightness_get(struct backlight_device
*bd
)
1629 if (!acpi_ec_read(brightness_offset
, &level
))
1637 static int brightness_read(char *p
)
1642 if ((level
= brightness_get(NULL
)) < 0) {
1643 len
+= sprintf(p
+ len
, "level:\t\tunreadable\n");
1645 len
+= sprintf(p
+ len
, "level:\t\t%d\n", level
& 0x7);
1646 len
+= sprintf(p
+ len
, "commands:\tup, down\n");
1647 len
+= sprintf(p
+ len
, "commands:\tlevel <level>"
1648 " (<level> is 0-7)\n");
1654 #define BRIGHTNESS_UP 4
1655 #define BRIGHTNESS_DOWN 5
1657 static int brightness_set(int value
)
1659 int cmos_cmd
, inc
, i
;
1660 int current_value
= brightness_get(NULL
);
1664 cmos_cmd
= value
> current_value
? BRIGHTNESS_UP
: BRIGHTNESS_DOWN
;
1665 inc
= value
> current_value
? 1 : -1;
1666 for (i
= current_value
; i
!= value
; i
+= inc
) {
1667 if (!cmos_eval(cmos_cmd
))
1669 if (!acpi_ec_write(brightness_offset
, i
+ inc
))
1676 static int brightness_write(char *buf
)
1682 while ((cmd
= next_cmd(&buf
))) {
1683 if ((level
= brightness_get(NULL
)) < 0)
1687 if (strlencmp(cmd
, "up") == 0) {
1688 new_level
= level
== 7 ? 7 : level
+ 1;
1689 } else if (strlencmp(cmd
, "down") == 0) {
1690 new_level
= level
== 0 ? 0 : level
- 1;
1691 } else if (sscanf(cmd
, "level %d", &new_level
) == 1 &&
1692 new_level
>= 0 && new_level
<= 7) {
1697 brightness_set(new_level
);
1703 static int brightness_update_status(struct backlight_device
*bd
)
1705 return brightness_set(bd
->props
->brightness
);
1708 static struct backlight_properties ibm_backlight_data
= {
1709 .owner
= THIS_MODULE
,
1710 .get_brightness
= brightness_get
,
1711 .update_status
= brightness_update_status
,
1712 .max_brightness
= 7,
1715 static int brightness_init(void)
1717 ibm_backlight_device
= backlight_device_register("ibm", NULL
, NULL
,
1718 &ibm_backlight_data
);
1719 if (IS_ERR(ibm_backlight_device
)) {
1720 printk(IBM_ERR
"Could not register backlight device\n");
1721 return PTR_ERR(ibm_backlight_device
);
1727 static void brightness_exit(void)
1729 if (ibm_backlight_device
) {
1730 backlight_device_unregister(ibm_backlight_device
);
1731 ibm_backlight_device
= NULL
;
1735 static int volume_offset
= 0x30;
1737 static int volume_read(char *p
)
1742 if (!acpi_ec_read(volume_offset
, &level
)) {
1743 len
+= sprintf(p
+ len
, "level:\t\tunreadable\n");
1745 len
+= sprintf(p
+ len
, "level:\t\t%d\n", level
& 0xf);
1746 len
+= sprintf(p
+ len
, "mute:\t\t%s\n", onoff(level
, 6));
1747 len
+= sprintf(p
+ len
, "commands:\tup, down, mute\n");
1748 len
+= sprintf(p
+ len
, "commands:\tlevel <level>"
1749 " (<level> is 0-15)\n");
1755 #define VOLUME_DOWN 0
1757 #define VOLUME_MUTE 2
1759 static int volume_write(char *buf
)
1761 int cmos_cmd
, inc
, i
;
1763 int new_level
, new_mute
;
1766 while ((cmd
= next_cmd(&buf
))) {
1767 if (!acpi_ec_read(volume_offset
, &level
))
1769 new_mute
= mute
= level
& 0x40;
1770 new_level
= level
= level
& 0xf;
1772 if (strlencmp(cmd
, "up") == 0) {
1776 new_level
= level
== 15 ? 15 : level
+ 1;
1777 } else if (strlencmp(cmd
, "down") == 0) {
1781 new_level
= level
== 0 ? 0 : level
- 1;
1782 } else if (sscanf(cmd
, "level %d", &new_level
) == 1 &&
1783 new_level
>= 0 && new_level
<= 15) {
1785 } else if (strlencmp(cmd
, "mute") == 0) {
1790 if (new_level
!= level
) { /* mute doesn't change */
1791 cmos_cmd
= new_level
> level
? VOLUME_UP
: VOLUME_DOWN
;
1792 inc
= new_level
> level
? 1 : -1;
1794 if (mute
&& (!cmos_eval(cmos_cmd
) ||
1795 !acpi_ec_write(volume_offset
, level
)))
1798 for (i
= level
; i
!= new_level
; i
+= inc
)
1799 if (!cmos_eval(cmos_cmd
) ||
1800 !acpi_ec_write(volume_offset
, i
+ inc
))
1803 if (mute
&& (!cmos_eval(VOLUME_MUTE
) ||
1804 !acpi_ec_write(volume_offset
,
1809 if (new_mute
!= mute
) { /* level doesn't change */
1810 cmos_cmd
= new_mute
? VOLUME_MUTE
: VOLUME_UP
;
1812 if (!cmos_eval(cmos_cmd
) ||
1813 !acpi_ec_write(volume_offset
, level
+ new_mute
))
1821 static enum fan_status_access_mode fan_status_access_mode
;
1822 static enum fan_control_access_mode fan_control_access_mode
;
1823 static enum fan_control_commands fan_control_commands
;
1825 static int fan_control_status_known
;
1826 static u8 fan_control_initial_status
;
1828 static void fan_watchdog_fire(struct work_struct
*ignored
);
1829 static int fan_watchdog_maxinterval
;
1830 static DECLARE_DELAYED_WORK(fan_watchdog_task
, fan_watchdog_fire
);
1832 static int fan_init(void)
1834 fan_status_access_mode
= IBMACPI_FAN_NONE
;
1835 fan_control_access_mode
= IBMACPI_FAN_WR_NONE
;
1836 fan_control_commands
= 0;
1837 fan_control_status_known
= 1;
1838 fan_watchdog_maxinterval
= 0;
1841 /* 570, 600e/x, 770e, 770x */
1842 fan_status_access_mode
= IBMACPI_FAN_RD_ACPI_GFAN
;
1844 /* all other ThinkPads: note that even old-style
1845 * ThinkPad ECs supports the fan control register */
1846 if (likely(acpi_ec_read(fan_status_offset
,
1847 &fan_control_initial_status
))) {
1848 fan_status_access_mode
= IBMACPI_FAN_RD_TPEC
;
1850 /* In some ThinkPads, neither the EC nor the ACPI
1851 * DSDT initialize the fan status, and it ends up
1852 * being set to 0x07 when it *could* be either
1855 * Enable for TP-1Y (T43), TP-78 (R51e),
1856 * TP-76 (R52), TP-70 (T43, R52), which are known
1858 if (fan_control_initial_status
== 0x07 &&
1859 ibm_thinkpad_ec_found
&&
1860 ((ibm_thinkpad_ec_found
[0] == '1' &&
1861 ibm_thinkpad_ec_found
[1] == 'Y') ||
1862 (ibm_thinkpad_ec_found
[0] == '7' &&
1863 (ibm_thinkpad_ec_found
[1] == '6' ||
1864 ibm_thinkpad_ec_found
[1] == '8' ||
1865 ibm_thinkpad_ec_found
[1] == '0'))
1868 "fan_init: initial fan status is "
1869 "unknown, assuming it is in auto "
1871 fan_control_status_known
= 0;
1875 "ThinkPad ACPI EC access misbehaving, "
1876 "fan status and control unavailable\n");
1883 fan_control_access_mode
= IBMACPI_FAN_WR_ACPI_SFAN
;
1884 fan_control_commands
|=
1885 IBMACPI_FAN_CMD_LEVEL
| IBMACPI_FAN_CMD_ENABLE
;
1888 /* gfan without sfan means no fan control */
1889 /* all other models implement TP EC 0x2f control */
1893 fan_control_access_mode
=
1894 IBMACPI_FAN_WR_ACPI_FANS
;
1895 fan_control_commands
|=
1896 IBMACPI_FAN_CMD_SPEED
|
1897 IBMACPI_FAN_CMD_LEVEL
|
1898 IBMACPI_FAN_CMD_ENABLE
;
1900 fan_control_access_mode
= IBMACPI_FAN_WR_TPEC
;
1901 fan_control_commands
|=
1902 IBMACPI_FAN_CMD_LEVEL
|
1903 IBMACPI_FAN_CMD_ENABLE
;
1911 static int fan_get_status(u8
*status
)
1916 * Add IBMACPI_FAN_RD_ACPI_FANS ? */
1918 switch (fan_status_access_mode
) {
1919 case IBMACPI_FAN_RD_ACPI_GFAN
:
1920 /* 570, 600e/x, 770e, 770x */
1922 if (unlikely(!acpi_evalf(gfan_handle
, &s
, NULL
, "d")))
1930 case IBMACPI_FAN_RD_TPEC
:
1931 /* all except 570, 600e/x, 770e, 770x */
1932 if (unlikely(!acpi_ec_read(fan_status_offset
, &s
)))
1947 static int fan_get_speed(unsigned int *speed
)
1951 switch (fan_status_access_mode
) {
1952 case IBMACPI_FAN_RD_TPEC
:
1953 /* all except 570, 600e/x, 770e, 770x */
1954 if (unlikely(!acpi_ec_read(fan_rpm_offset
, &lo
) ||
1955 !acpi_ec_read(fan_rpm_offset
+ 1, &hi
)))
1959 *speed
= (hi
<< 8) | lo
;
1970 static void fan_exit(void)
1972 cancel_delayed_work(&fan_watchdog_task
);
1973 flush_scheduled_work();
1976 static void fan_watchdog_reset(void)
1978 static int fan_watchdog_active
= 0;
1980 if (fan_watchdog_active
)
1981 cancel_delayed_work(&fan_watchdog_task
);
1983 if (fan_watchdog_maxinterval
> 0) {
1984 fan_watchdog_active
= 1;
1985 if (!schedule_delayed_work(&fan_watchdog_task
,
1986 msecs_to_jiffies(fan_watchdog_maxinterval
1988 printk(IBM_ERR
"failed to schedule the fan watchdog, "
1989 "watchdog will not trigger\n");
1992 fan_watchdog_active
= 0;
1995 static int fan_read(char *p
)
2000 unsigned int speed
= 0;
2002 switch (fan_status_access_mode
) {
2003 case IBMACPI_FAN_RD_ACPI_GFAN
:
2004 /* 570, 600e/x, 770e, 770x */
2005 if ((rc
= fan_get_status(&status
)) < 0)
2008 len
+= sprintf(p
+ len
, "status:\t\t%s\n"
2010 (status
!= 0) ? "enabled" : "disabled", status
);
2013 case IBMACPI_FAN_RD_TPEC
:
2014 /* all except 570, 600e/x, 770e, 770x */
2015 if ((rc
= fan_get_status(&status
)) < 0)
2018 if (unlikely(!fan_control_status_known
)) {
2019 if (status
!= fan_control_initial_status
)
2020 fan_control_status_known
= 1;
2022 /* Return most likely status. In fact, it
2023 * might be the only possible status */
2024 status
= IBMACPI_FAN_EC_AUTO
;
2027 len
+= sprintf(p
+ len
, "status:\t\t%s\n",
2028 (status
!= 0) ? "enabled" : "disabled");
2030 /* No ThinkPad boots on disengaged mode, we can safely
2031 * assume the tachometer is online if fan control status
2033 if ((rc
= fan_get_speed(&speed
)) < 0)
2036 len
+= sprintf(p
+ len
, "speed:\t\t%d\n", speed
);
2038 if (status
& IBMACPI_FAN_EC_DISENGAGED
)
2039 /* Disengaged mode takes precedence */
2040 len
+= sprintf(p
+ len
, "level:\t\tdisengaged\n");
2041 else if (status
& IBMACPI_FAN_EC_AUTO
)
2042 len
+= sprintf(p
+ len
, "level:\t\tauto\n");
2044 len
+= sprintf(p
+ len
, "level:\t\t%d\n", status
);
2047 case IBMACPI_FAN_NONE
:
2049 len
+= sprintf(p
+ len
, "status:\t\tnot supported\n");
2052 if (fan_control_commands
& IBMACPI_FAN_CMD_LEVEL
) {
2053 len
+= sprintf(p
+ len
, "commands:\tlevel <level>");
2055 switch (fan_control_access_mode
) {
2056 case IBMACPI_FAN_WR_ACPI_SFAN
:
2057 len
+= sprintf(p
+ len
, " (<level> is 0-7)\n");
2061 len
+= sprintf(p
+ len
, " (<level> is 0-7, "
2062 "auto, disengaged)\n");
2067 if (fan_control_commands
& IBMACPI_FAN_CMD_ENABLE
)
2068 len
+= sprintf(p
+ len
, "commands:\tenable, disable\n"
2069 "commands:\twatchdog <timeout> (<timeout> is 0 (off), "
2070 "1-120 (seconds))\n");
2072 if (fan_control_commands
& IBMACPI_FAN_CMD_SPEED
)
2073 len
+= sprintf(p
+ len
, "commands:\tspeed <speed>"
2074 " (<speed> is 0-65535)\n");
2079 static int fan_set_level(int level
)
2081 switch (fan_control_access_mode
) {
2082 case IBMACPI_FAN_WR_ACPI_SFAN
:
2083 if (level
>= 0 && level
<= 7) {
2084 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", level
))
2090 case IBMACPI_FAN_WR_ACPI_FANS
:
2091 case IBMACPI_FAN_WR_TPEC
:
2092 if ((level
!= IBMACPI_FAN_EC_AUTO
) &&
2093 (level
!= IBMACPI_FAN_EC_DISENGAGED
) &&
2094 ((level
< 0) || (level
> 7)))
2097 if (!acpi_ec_write(fan_status_offset
, level
))
2100 fan_control_status_known
= 1;
2109 static int fan_set_enable(void)
2114 switch (fan_control_access_mode
) {
2115 case IBMACPI_FAN_WR_ACPI_FANS
:
2116 case IBMACPI_FAN_WR_TPEC
:
2117 if ((rc
= fan_get_status(&s
)) < 0)
2120 /* Don't go out of emergency fan mode */
2122 s
= IBMACPI_FAN_EC_AUTO
;
2124 if (!acpi_ec_write(fan_status_offset
, s
))
2127 fan_control_status_known
= 1;
2130 case IBMACPI_FAN_WR_ACPI_SFAN
:
2131 if ((rc
= fan_get_status(&s
)) < 0)
2136 /* Set fan to at least level 4 */
2140 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", s
))
2150 static int fan_set_disable(void)
2152 switch (fan_control_access_mode
) {
2153 case IBMACPI_FAN_WR_ACPI_FANS
:
2154 case IBMACPI_FAN_WR_TPEC
:
2155 if (!acpi_ec_write(fan_status_offset
, 0x00))
2158 fan_control_status_known
= 1;
2161 case IBMACPI_FAN_WR_ACPI_SFAN
:
2162 if (!acpi_evalf(sfan_handle
, NULL
, NULL
, "vd", 0x00))
2172 static int fan_set_speed(int speed
)
2174 switch (fan_control_access_mode
) {
2175 case IBMACPI_FAN_WR_ACPI_FANS
:
2176 if (speed
>= 0 && speed
<= 65535) {
2177 if (!acpi_evalf(fans_handle
, NULL
, NULL
, "vddd",
2178 speed
, speed
, speed
))
2190 static int fan_write_cmd_level(const char *cmd
, int *rc
)
2194 if (strlencmp(cmd
, "level auto") == 0)
2195 level
= IBMACPI_FAN_EC_AUTO
;
2196 else if (strlencmp(cmd
, "level disengaged") == 0)
2197 level
= IBMACPI_FAN_EC_DISENGAGED
;
2198 else if (sscanf(cmd
, "level %d", &level
) != 1)
2201 if ((*rc
= fan_set_level(level
)) == -ENXIO
)
2202 printk(IBM_ERR
"level command accepted for unsupported "
2203 "access mode %d", fan_control_access_mode
);
2208 static int fan_write_cmd_enable(const char *cmd
, int *rc
)
2210 if (strlencmp(cmd
, "enable") != 0)
2213 if ((*rc
= fan_set_enable()) == -ENXIO
)
2214 printk(IBM_ERR
"enable command accepted for unsupported "
2215 "access mode %d", fan_control_access_mode
);
2220 static int fan_write_cmd_disable(const char *cmd
, int *rc
)
2222 if (strlencmp(cmd
, "disable") != 0)
2225 if ((*rc
= fan_set_disable()) == -ENXIO
)
2226 printk(IBM_ERR
"disable command accepted for unsupported "
2227 "access mode %d", fan_control_access_mode
);
2232 static int fan_write_cmd_speed(const char *cmd
, int *rc
)
2237 * Support speed <low> <medium> <high> ? */
2239 if (sscanf(cmd
, "speed %d", &speed
) != 1)
2242 if ((*rc
= fan_set_speed(speed
)) == -ENXIO
)
2243 printk(IBM_ERR
"speed command accepted for unsupported "
2244 "access mode %d", fan_control_access_mode
);
2249 static int fan_write_cmd_watchdog(const char *cmd
, int *rc
)
2253 if (sscanf(cmd
, "watchdog %d", &interval
) != 1)
2256 if (interval
< 0 || interval
> 120)
2259 fan_watchdog_maxinterval
= interval
;
2264 static int fan_write(char *buf
)
2269 while (!rc
&& (cmd
= next_cmd(&buf
))) {
2270 if (!((fan_control_commands
& IBMACPI_FAN_CMD_LEVEL
) &&
2271 fan_write_cmd_level(cmd
, &rc
)) &&
2272 !((fan_control_commands
& IBMACPI_FAN_CMD_ENABLE
) &&
2273 (fan_write_cmd_enable(cmd
, &rc
) ||
2274 fan_write_cmd_disable(cmd
, &rc
) ||
2275 fan_write_cmd_watchdog(cmd
, &rc
))) &&
2276 !((fan_control_commands
& IBMACPI_FAN_CMD_SPEED
) &&
2277 fan_write_cmd_speed(cmd
, &rc
))
2281 fan_watchdog_reset();
2287 static void fan_watchdog_fire(struct work_struct
*ignored
)
2289 printk(IBM_NOTICE
"fan watchdog: enabling fan\n");
2290 if (fan_set_enable()) {
2291 printk(IBM_ERR
"fan watchdog: error while enabling fan\n");
2292 /* reschedule for later */
2293 fan_watchdog_reset();
2297 static struct ibm_struct ibms
[] = {
2300 .init
= ibm_acpi_driver_init
,
2301 .read
= driver_read
,
2305 .hid
= IBM_HKEY_HID
,
2306 .init
= hotkey_init
,
2307 .read
= hotkey_read
,
2308 .write
= hotkey_write
,
2309 .exit
= hotkey_exit
,
2310 .notify
= hotkey_notify
,
2311 .handle
= &hkey_handle
,
2312 .type
= ACPI_DEVICE_NOTIFY
,
2315 .name
= "bluetooth",
2316 .init
= bluetooth_init
,
2317 .read
= bluetooth_read
,
2318 .write
= bluetooth_write
,
2331 .write
= video_write
,
2338 .write
= light_write
,
2340 #ifdef CONFIG_ACPI_IBM_DOCK
2344 .write
= dock_write
,
2345 .notify
= dock_notify
,
2346 .handle
= &dock_handle
,
2347 .type
= ACPI_SYSTEM_NOTIFY
,
2352 .notify
= dock_notify
,
2353 .handle
= &pci_handle
,
2354 .type
= ACPI_SYSTEM_NOTIFY
,
2357 #ifdef CONFIG_ACPI_IBM_BAY
2363 .notify
= bay_notify
,
2364 .handle
= &bay_handle
,
2365 .type
= ACPI_SYSTEM_NOTIFY
,
2371 .write
= cmos_write
,
2382 .write
= beep_write
,
2386 .init
= thermal_init
,
2387 .read
= thermal_read
,
2391 .read
= ecdump_read
,
2392 .write
= ecdump_write
,
2396 .name
= "brightness",
2397 .read
= brightness_read
,
2398 .write
= brightness_write
,
2399 .init
= brightness_init
,
2400 .exit
= brightness_exit
,
2404 .read
= volume_read
,
2405 .write
= volume_write
,
2417 static int dispatch_read(char *page
, char **start
, off_t off
, int count
,
2418 int *eof
, void *data
)
2420 struct ibm_struct
*ibm
= data
;
2423 if (!ibm
|| !ibm
->read
)
2426 len
= ibm
->read(page
);
2430 if (len
<= off
+ count
)
2432 *start
= page
+ off
;
2442 static int dispatch_write(struct file
*file
, const char __user
* userbuf
,
2443 unsigned long count
, void *data
)
2445 struct ibm_struct
*ibm
= data
;
2449 if (!ibm
|| !ibm
->write
)
2452 kernbuf
= kmalloc(count
+ 2, GFP_KERNEL
);
2456 if (copy_from_user(kernbuf
, userbuf
, count
)) {
2462 strcat(kernbuf
, ",");
2463 ret
= ibm
->write(kernbuf
);
2472 static void dispatch_notify(acpi_handle handle
, u32 event
, void *data
)
2474 struct ibm_struct
*ibm
= data
;
2476 if (!ibm
|| !ibm
->notify
)
2479 ibm
->notify(ibm
, event
);
2482 static int __init
setup_notify(struct ibm_struct
*ibm
)
2490 ret
= acpi_bus_get_device(*ibm
->handle
, &ibm
->device
);
2492 printk(IBM_ERR
"%s device not present\n", ibm
->name
);
2496 acpi_driver_data(ibm
->device
) = ibm
;
2497 sprintf(acpi_device_class(ibm
->device
), "%s/%s", IBM_NAME
, ibm
->name
);
2499 status
= acpi_install_notify_handler(*ibm
->handle
, ibm
->type
,
2500 dispatch_notify
, ibm
);
2501 if (ACPI_FAILURE(status
)) {
2502 printk(IBM_ERR
"acpi_install_notify_handler(%s) failed: %d\n",
2506 ibm
->notify_installed
= 1;
2510 static int __init
ibm_device_add(struct acpi_device
*device
)
2515 static int __init
register_driver(struct ibm_struct
*ibm
)
2519 ibm
->driver
= kzalloc(sizeof(struct acpi_driver
), GFP_KERNEL
);
2521 printk(IBM_ERR
"kmalloc(ibm->driver) failed\n");
2525 sprintf(ibm
->driver
->name
, "%s_%s", IBM_NAME
, ibm
->name
);
2526 ibm
->driver
->ids
= ibm
->hid
;
2527 ibm
->driver
->ops
.add
= &ibm_device_add
;
2529 ret
= acpi_bus_register_driver(ibm
->driver
);
2531 printk(IBM_ERR
"acpi_bus_register_driver(%s) failed: %d\n",
2539 static int __init
ibm_init(struct ibm_struct
*ibm
)
2542 struct proc_dir_entry
*entry
;
2544 if (ibm
->experimental
&& !experimental
)
2548 ret
= register_driver(ibm
);
2551 ibm
->driver_registered
= 1;
2558 ibm
->init_called
= 1;
2562 entry
= create_proc_entry(ibm
->name
,
2563 S_IFREG
| S_IRUGO
| S_IWUSR
,
2566 printk(IBM_ERR
"unable to create proc entry %s\n",
2570 entry
->owner
= THIS_MODULE
;
2572 entry
->read_proc
= &dispatch_read
;
2574 entry
->write_proc
= &dispatch_write
;
2575 ibm
->proc_created
= 1;
2579 ret
= setup_notify(ibm
);
2587 static void ibm_exit(struct ibm_struct
*ibm
)
2589 if (ibm
->notify_installed
)
2590 acpi_remove_notify_handler(*ibm
->handle
, ibm
->type
,
2593 if (ibm
->proc_created
)
2594 remove_proc_entry(ibm
->name
, proc_dir
);
2596 if (ibm
->init_called
&& ibm
->exit
)
2599 if (ibm
->driver_registered
) {
2600 acpi_bus_unregister_driver(ibm
->driver
);
2605 static void __init
ibm_handle_init(char *name
,
2606 acpi_handle
* handle
, acpi_handle parent
,
2607 char **paths
, int num_paths
, char **path
)
2612 for (i
= 0; i
< num_paths
; i
++) {
2613 status
= acpi_get_handle(parent
, paths
[i
], handle
);
2614 if (ACPI_SUCCESS(status
)) {
2623 #define IBM_HANDLE_INIT(object) \
2624 ibm_handle_init(#object, &object##_handle, *object##_parent, \
2625 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
2627 static int set_ibm_param(const char *val
, struct kernel_param
*kp
)
2631 for (i
= 0; i
< ARRAY_SIZE(ibms
); i
++)
2632 if (strcmp(ibms
[i
].name
, kp
->name
) == 0 && ibms
[i
].write
) {
2633 if (strlen(val
) > sizeof(ibms
[i
].param
) - 2)
2635 strcpy(ibms
[i
].param
, val
);
2636 strcat(ibms
[i
].param
, ",");
2643 #define IBM_PARAM(feature) \
2644 module_param_call(feature, set_ibm_param, NULL, NULL, 0)
2647 IBM_PARAM(bluetooth
);
2650 #ifdef CONFIG_ACPI_IBM_DOCK
2653 #ifdef CONFIG_ACPI_IBM_BAY
2660 IBM_PARAM(brightness
);
2664 static void acpi_ibm_exit(void)
2668 for (i
= ARRAY_SIZE(ibms
) - 1; i
>= 0; i
--)
2671 remove_proc_entry(IBM_DIR
, acpi_root_dir
);
2673 if (ibm_thinkpad_ec_found
)
2674 kfree(ibm_thinkpad_ec_found
);
2677 static char* __init
check_dmi_for_ec(void)
2679 struct dmi_device
*dev
= NULL
;
2680 char ec_fw_string
[18];
2683 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
2684 * X32 or newer, all Z series; Some models must have an
2685 * up-to-date BIOS or they will not be detected.
2687 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
2689 while ((dev
= dmi_find_device(DMI_DEV_TYPE_OEM_STRING
, NULL
, dev
))) {
2690 if (sscanf(dev
->name
,
2691 "IBM ThinkPad Embedded Controller -[%17c",
2692 ec_fw_string
) == 1) {
2693 ec_fw_string
[sizeof(ec_fw_string
) - 1] = 0;
2694 ec_fw_string
[strcspn(ec_fw_string
, " ]")] = 0;
2695 return kstrdup(ec_fw_string
, GFP_KERNEL
);
2701 static int __init
acpi_ibm_init(void)
2708 if (!acpi_specific_hotkey_enabled
) {
2709 printk(IBM_ERR
"using generic hotkey driver\n");
2713 /* ec is required because many other handles are relative to it */
2714 IBM_HANDLE_INIT(ec
);
2716 printk(IBM_ERR
"ec object not found\n");
2720 /* Models with newer firmware report the EC in DMI */
2721 ibm_thinkpad_ec_found
= check_dmi_for_ec();
2722 if (ibm_thinkpad_ec_found
)
2723 printk(IBM_INFO
"ThinkPad EC firmware %s\n",
2724 ibm_thinkpad_ec_found
);
2726 /* these handles are not required */
2727 IBM_HANDLE_INIT(vid
);
2728 IBM_HANDLE_INIT(vid2
);
2729 IBM_HANDLE_INIT(ledb
);
2730 IBM_HANDLE_INIT(led
);
2731 IBM_HANDLE_INIT(hkey
);
2732 IBM_HANDLE_INIT(lght
);
2733 IBM_HANDLE_INIT(cmos
);
2734 #ifdef CONFIG_ACPI_IBM_DOCK
2735 IBM_HANDLE_INIT(dock
);
2737 IBM_HANDLE_INIT(pci
);
2738 #ifdef CONFIG_ACPI_IBM_BAY
2739 IBM_HANDLE_INIT(bay
);
2741 IBM_HANDLE_INIT(bay_ej
);
2742 IBM_HANDLE_INIT(bay2
);
2744 IBM_HANDLE_INIT(bay2_ej
);
2746 IBM_HANDLE_INIT(beep
);
2747 IBM_HANDLE_INIT(ecrd
);
2748 IBM_HANDLE_INIT(ecwr
);
2749 IBM_HANDLE_INIT(fans
);
2750 IBM_HANDLE_INIT(gfan
);
2751 IBM_HANDLE_INIT(sfan
);
2753 proc_dir
= proc_mkdir(IBM_DIR
, acpi_root_dir
);
2755 printk(IBM_ERR
"unable to create proc dir %s", IBM_DIR
);
2758 proc_dir
->owner
= THIS_MODULE
;
2760 for (i
= 0; i
< ARRAY_SIZE(ibms
); i
++) {
2761 ret
= ibm_init(&ibms
[i
]);
2762 if (ret
>= 0 && *ibms
[i
].param
)
2763 ret
= ibms
[i
].write(ibms
[i
].param
);
2773 module_init(acpi_ibm_init
);
2774 module_exit(acpi_ibm_exit
);