blob: 2097c399dd064a47f81ccc317fe6e9b4e6ac0bfe [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * video.c - ACPI Video Driver ($Revision:$)
3 *
4 * Copyright (C) 2004 Luming Yu <luming.yu@intel.com>
5 * Copyright (C) 2004 Bruno Ducrot <ducrot@poupinou.org>
Thomas Tuttlef4715182006-12-19 12:56:14 -08006 * Copyright (C) 2006 Thomas Tuttle <linux-kernel@ttuttle.net>
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 *
8 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or (at
13 * your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
23 *
24 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
25 */
26
27#include <linux/kernel.h>
28#include <linux/module.h>
29#include <linux/init.h>
30#include <linux/types.h>
31#include <linux/list.h>
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -050032#include <linux/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#include <linux/proc_fs.h>
34#include <linux/seq_file.h>
Luming Yue9dab192007-08-20 18:23:53 +080035#include <linux/input.h>
Yu Luming2f3d0002006-11-11 02:40:34 +080036#include <linux/backlight.h>
Zhang Rui702ed512008-01-17 15:51:22 +080037#include <linux/thermal.h>
Luming Yu23b0f012007-05-09 21:07:05 +080038#include <linux/video_output.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070039#include <asm/uaccess.h>
40
41#include <acpi/acpi_bus.h>
42#include <acpi/acpi_drivers.h>
43
44#define ACPI_VIDEO_COMPONENT 0x08000000
45#define ACPI_VIDEO_CLASS "video"
Linus Torvalds1da177e2005-04-16 15:20:36 -070046#define ACPI_VIDEO_BUS_NAME "Video Bus"
47#define ACPI_VIDEO_DEVICE_NAME "Video Device"
48#define ACPI_VIDEO_NOTIFY_SWITCH 0x80
49#define ACPI_VIDEO_NOTIFY_PROBE 0x81
50#define ACPI_VIDEO_NOTIFY_CYCLE 0x82
51#define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83
52#define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84
53
Thomas Tuttlef4715182006-12-19 12:56:14 -080054#define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x85
55#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86
56#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87
57#define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x88
58#define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x89
Linus Torvalds1da177e2005-04-16 15:20:36 -070059
Yu Luming2f3d0002006-11-11 02:40:34 +080060#define MAX_NAME_LEN 20
Linus Torvalds1da177e2005-04-16 15:20:36 -070061
Rui Zhang82cae992007-01-03 23:40:53 -050062#define ACPI_VIDEO_DISPLAY_CRT 1
63#define ACPI_VIDEO_DISPLAY_TV 2
64#define ACPI_VIDEO_DISPLAY_DVI 3
65#define ACPI_VIDEO_DISPLAY_LCD 4
66
Linus Torvalds1da177e2005-04-16 15:20:36 -070067#define _COMPONENT ACPI_VIDEO_COMPONENT
Len Brownf52fd662007-02-12 22:42:12 -050068ACPI_MODULE_NAME("video");
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
Len Brownf52fd662007-02-12 22:42:12 -050070MODULE_AUTHOR("Bruno Ducrot");
Len Brown7cda93e2007-02-12 23:50:02 -050071MODULE_DESCRIPTION("ACPI Video Driver");
Linus Torvalds1da177e2005-04-16 15:20:36 -070072MODULE_LICENSE("GPL");
73
Zhang Rui8a681a42008-01-25 14:47:49 +080074static int brightness_switch_enabled = 1;
75module_param(brightness_switch_enabled, bool, 0644);
76
Len Brown4be44fc2005-08-05 00:44:28 -040077static int acpi_video_bus_add(struct acpi_device *device);
78static int acpi_video_bus_remove(struct acpi_device *device, int type);
Matthew Garrett863c1492008-02-04 23:31:24 -080079static int acpi_video_resume(struct acpi_device *device);
Linus Torvalds1da177e2005-04-16 15:20:36 -070080
Thomas Renninger1ba90e32007-07-23 14:44:41 +020081static const struct acpi_device_id video_device_ids[] = {
82 {ACPI_VIDEO_HID, 0},
83 {"", 0},
84};
85MODULE_DEVICE_TABLE(acpi, video_device_ids);
86
Linus Torvalds1da177e2005-04-16 15:20:36 -070087static struct acpi_driver acpi_video_bus = {
Len Brownc2b67052007-02-12 23:33:40 -050088 .name = "video",
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 .class = ACPI_VIDEO_CLASS,
Thomas Renninger1ba90e32007-07-23 14:44:41 +020090 .ids = video_device_ids,
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 .ops = {
92 .add = acpi_video_bus_add,
93 .remove = acpi_video_bus_remove,
Matthew Garrett863c1492008-02-04 23:31:24 -080094 .resume = acpi_video_resume,
Len Brown4be44fc2005-08-05 00:44:28 -040095 },
Linus Torvalds1da177e2005-04-16 15:20:36 -070096};
97
98struct acpi_video_bus_flags {
Len Brown4be44fc2005-08-05 00:44:28 -040099 u8 multihead:1; /* can switch video heads */
100 u8 rom:1; /* can retrieve a video rom */
101 u8 post:1; /* can configure the head to */
102 u8 reserved:5;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103};
104
105struct acpi_video_bus_cap {
Len Brown4be44fc2005-08-05 00:44:28 -0400106 u8 _DOS:1; /*Enable/Disable output switching */
107 u8 _DOD:1; /*Enumerate all devices attached to display adapter */
108 u8 _ROM:1; /*Get ROM Data */
109 u8 _GPD:1; /*Get POST Device */
110 u8 _SPD:1; /*Set POST Device */
111 u8 _VPO:1; /*Video POST Options */
112 u8 reserved:2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113};
114
Len Brown4be44fc2005-08-05 00:44:28 -0400115struct acpi_video_device_attrib {
116 u32 display_index:4; /* A zero-based instance of the Display */
Julius Volz98fb8fe2007-02-20 16:38:40 +0100117 u32 display_port_attachment:4; /*This field differentiates the display type */
Len Brown4be44fc2005-08-05 00:44:28 -0400118 u32 display_type:4; /*Describe the specific type in use */
Julius Volz98fb8fe2007-02-20 16:38:40 +0100119 u32 vendor_specific:4; /*Chipset Vendor Specific */
Len Brown4be44fc2005-08-05 00:44:28 -0400120 u32 bios_can_detect:1; /*BIOS can detect the device */
121 u32 depend_on_vga:1; /*Non-VGA output device whose power is related to
122 the VGA device. */
123 u32 pipe_id:3; /*For VGA multiple-head devices. */
124 u32 reserved:10; /*Must be 0 */
125 u32 device_id_scheme:1; /*Device ID Scheme */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126};
127
128struct acpi_video_enumerated_device {
129 union {
130 u32 int_val;
Len Brown4be44fc2005-08-05 00:44:28 -0400131 struct acpi_video_device_attrib attrib;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 } value;
133 struct acpi_video_device *bind_info;
134};
135
136struct acpi_video_bus {
Patrick Mochele6afa0d2006-05-19 16:54:40 -0400137 struct acpi_device *device;
Len Brown4be44fc2005-08-05 00:44:28 -0400138 u8 dos_setting;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139 struct acpi_video_enumerated_device *attached_array;
Len Brown4be44fc2005-08-05 00:44:28 -0400140 u8 attached_count;
141 struct acpi_video_bus_cap cap;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142 struct acpi_video_bus_flags flags;
Len Brown4be44fc2005-08-05 00:44:28 -0400143 struct list_head video_device_list;
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -0500144 struct mutex device_list_lock; /* protects video_device_list */
Len Brown4be44fc2005-08-05 00:44:28 -0400145 struct proc_dir_entry *dir;
Luming Yue9dab192007-08-20 18:23:53 +0800146 struct input_dev *input;
147 char phys[32]; /* for input device */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148};
149
150struct acpi_video_device_flags {
Len Brown4be44fc2005-08-05 00:44:28 -0400151 u8 crt:1;
152 u8 lcd:1;
153 u8 tvout:1;
Rui Zhang82cae992007-01-03 23:40:53 -0500154 u8 dvi:1;
Len Brown4be44fc2005-08-05 00:44:28 -0400155 u8 bios:1;
156 u8 unknown:1;
Rui Zhang82cae992007-01-03 23:40:53 -0500157 u8 reserved:2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158};
159
160struct acpi_video_device_cap {
Len Brown4be44fc2005-08-05 00:44:28 -0400161 u8 _ADR:1; /*Return the unique ID */
162 u8 _BCL:1; /*Query list of brightness control levels supported */
163 u8 _BCM:1; /*Set the brightness level */
Yu Luming2f3d0002006-11-11 02:40:34 +0800164 u8 _BQC:1; /* Get current brightness level */
Len Brown4be44fc2005-08-05 00:44:28 -0400165 u8 _DDC:1; /*Return the EDID for this device */
166 u8 _DCS:1; /*Return status of output device */
167 u8 _DGS:1; /*Query graphics state */
168 u8 _DSS:1; /*Device state set */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169};
170
171struct acpi_video_device_brightness {
Len Brown4be44fc2005-08-05 00:44:28 -0400172 int curr;
173 int count;
174 int *levels;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175};
176
177struct acpi_video_device {
Len Brown4be44fc2005-08-05 00:44:28 -0400178 unsigned long device_id;
179 struct acpi_video_device_flags flags;
180 struct acpi_video_device_cap cap;
181 struct list_head entry;
182 struct acpi_video_bus *video;
183 struct acpi_device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184 struct acpi_video_device_brightness *brightness;
Yu Luming2f3d0002006-11-11 02:40:34 +0800185 struct backlight_device *backlight;
Zhang Rui702ed512008-01-17 15:51:22 +0800186 struct thermal_cooling_device *cdev;
Luming Yu23b0f012007-05-09 21:07:05 +0800187 struct output_device *output_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188};
189
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190/* bus */
191static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file);
192static struct file_operations acpi_video_bus_info_fops = {
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700193 .owner = THIS_MODULE,
Len Brown4be44fc2005-08-05 00:44:28 -0400194 .open = acpi_video_bus_info_open_fs,
195 .read = seq_read,
196 .llseek = seq_lseek,
197 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198};
199
200static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file);
201static struct file_operations acpi_video_bus_ROM_fops = {
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700202 .owner = THIS_MODULE,
Len Brown4be44fc2005-08-05 00:44:28 -0400203 .open = acpi_video_bus_ROM_open_fs,
204 .read = seq_read,
205 .llseek = seq_lseek,
206 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207};
208
Len Brown4be44fc2005-08-05 00:44:28 -0400209static int acpi_video_bus_POST_info_open_fs(struct inode *inode,
210 struct file *file);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211static struct file_operations acpi_video_bus_POST_info_fops = {
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700212 .owner = THIS_MODULE,
Len Brown4be44fc2005-08-05 00:44:28 -0400213 .open = acpi_video_bus_POST_info_open_fs,
214 .read = seq_read,
215 .llseek = seq_lseek,
216 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217};
218
219static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file);
220static struct file_operations acpi_video_bus_POST_fops = {
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700221 .owner = THIS_MODULE,
Len Brown4be44fc2005-08-05 00:44:28 -0400222 .open = acpi_video_bus_POST_open_fs,
223 .read = seq_read,
224 .llseek = seq_lseek,
225 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226};
227
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file);
229static struct file_operations acpi_video_bus_DOS_fops = {
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700230 .owner = THIS_MODULE,
Len Brown4be44fc2005-08-05 00:44:28 -0400231 .open = acpi_video_bus_DOS_open_fs,
232 .read = seq_read,
233 .llseek = seq_lseek,
234 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235};
236
237/* device */
Len Brown4be44fc2005-08-05 00:44:28 -0400238static int acpi_video_device_info_open_fs(struct inode *inode,
239 struct file *file);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240static struct file_operations acpi_video_device_info_fops = {
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700241 .owner = THIS_MODULE,
Len Brown4be44fc2005-08-05 00:44:28 -0400242 .open = acpi_video_device_info_open_fs,
243 .read = seq_read,
244 .llseek = seq_lseek,
245 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246};
247
Len Brown4be44fc2005-08-05 00:44:28 -0400248static int acpi_video_device_state_open_fs(struct inode *inode,
249 struct file *file);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250static struct file_operations acpi_video_device_state_fops = {
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700251 .owner = THIS_MODULE,
Len Brown4be44fc2005-08-05 00:44:28 -0400252 .open = acpi_video_device_state_open_fs,
253 .read = seq_read,
254 .llseek = seq_lseek,
255 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256};
257
Len Brown4be44fc2005-08-05 00:44:28 -0400258static int acpi_video_device_brightness_open_fs(struct inode *inode,
259 struct file *file);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260static struct file_operations acpi_video_device_brightness_fops = {
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700261 .owner = THIS_MODULE,
Len Brown4be44fc2005-08-05 00:44:28 -0400262 .open = acpi_video_device_brightness_open_fs,
263 .read = seq_read,
264 .llseek = seq_lseek,
265 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266};
267
Len Brown4be44fc2005-08-05 00:44:28 -0400268static int acpi_video_device_EDID_open_fs(struct inode *inode,
269 struct file *file);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270static struct file_operations acpi_video_device_EDID_fops = {
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700271 .owner = THIS_MODULE,
Len Brown4be44fc2005-08-05 00:44:28 -0400272 .open = acpi_video_device_EDID_open_fs,
273 .read = seq_read,
274 .llseek = seq_lseek,
275 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276};
277
Len Brown4be44fc2005-08-05 00:44:28 -0400278static char device_decode[][30] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279 "motherboard VGA device",
280 "PCI VGA device",
281 "AGP VGA device",
282 "UNKNOWN",
283};
284
Len Brown4be44fc2005-08-05 00:44:28 -0400285static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data);
286static void acpi_video_device_rebind(struct acpi_video_bus *video);
287static void acpi_video_device_bind(struct acpi_video_bus *video,
288 struct acpi_video_device *device);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289static int acpi_video_device_enumerate(struct acpi_video_bus *video);
Yu Luming2f3d0002006-11-11 02:40:34 +0800290static int acpi_video_device_lcd_set_level(struct acpi_video_device *device,
291 int level);
292static int acpi_video_device_lcd_get_level_current(
293 struct acpi_video_device *device,
Matthew Wilcox27663c52008-10-10 02:22:59 -0400294 unsigned long long *level);
Len Brown4be44fc2005-08-05 00:44:28 -0400295static int acpi_video_get_next_level(struct acpi_video_device *device,
296 u32 level_current, u32 event);
297static void acpi_video_switch_brightness(struct acpi_video_device *device,
298 int event);
Luming Yu23b0f012007-05-09 21:07:05 +0800299static int acpi_video_device_get_state(struct acpi_video_device *device,
Matthew Wilcox27663c52008-10-10 02:22:59 -0400300 unsigned long long *state);
Luming Yu23b0f012007-05-09 21:07:05 +0800301static int acpi_video_output_get(struct output_device *od);
302static int acpi_video_device_set_state(struct acpi_video_device *device, int state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303
Yu Luming2f3d0002006-11-11 02:40:34 +0800304/*backlight device sysfs support*/
305static int acpi_video_get_brightness(struct backlight_device *bd)
306{
Matthew Wilcox27663c52008-10-10 02:22:59 -0400307 unsigned long long cur_level;
Matthew Garrett38531e62007-12-26 02:03:26 +0000308 int i;
Yu Luming2f3d0002006-11-11 02:40:34 +0800309 struct acpi_video_device *vd =
Richard Purdie655bfd72007-07-09 12:17:24 +0100310 (struct acpi_video_device *)bl_get_data(bd);
Yu Luming2f3d0002006-11-11 02:40:34 +0800311 acpi_video_device_lcd_get_level_current(vd, &cur_level);
Matthew Garrett38531e62007-12-26 02:03:26 +0000312 for (i = 2; i < vd->brightness->count; i++) {
313 if (vd->brightness->levels[i] == cur_level)
314 /* The first two entries are special - see page 575
315 of the ACPI spec 3.0 */
316 return i-2;
317 }
318 return 0;
Yu Luming2f3d0002006-11-11 02:40:34 +0800319}
320
321static int acpi_video_set_brightness(struct backlight_device *bd)
322{
Matthew Garrett38531e62007-12-26 02:03:26 +0000323 int request_level = bd->props.brightness+2;
Yu Luming2f3d0002006-11-11 02:40:34 +0800324 struct acpi_video_device *vd =
Richard Purdie655bfd72007-07-09 12:17:24 +0100325 (struct acpi_video_device *)bl_get_data(bd);
Matthew Garrett38531e62007-12-26 02:03:26 +0000326 acpi_video_device_lcd_set_level(vd,
327 vd->brightness->levels[request_level]);
Yu Luming2f3d0002006-11-11 02:40:34 +0800328 return 0;
329}
330
Richard Purdie599a52d2007-02-10 23:07:48 +0000331static struct backlight_ops acpi_backlight_ops = {
332 .get_brightness = acpi_video_get_brightness,
333 .update_status = acpi_video_set_brightness,
334};
335
Luming Yu23b0f012007-05-09 21:07:05 +0800336/*video output device sysfs support*/
337static int acpi_video_output_get(struct output_device *od)
338{
Matthew Wilcox27663c52008-10-10 02:22:59 -0400339 unsigned long long state;
Luming Yu23b0f012007-05-09 21:07:05 +0800340 struct acpi_video_device *vd =
tonyj@suse.de60043422007-08-07 22:28:47 -0700341 (struct acpi_video_device *)dev_get_drvdata(&od->dev);
Luming Yu23b0f012007-05-09 21:07:05 +0800342 acpi_video_device_get_state(vd, &state);
343 return (int)state;
344}
345
346static int acpi_video_output_set(struct output_device *od)
347{
348 unsigned long state = od->request_state;
349 struct acpi_video_device *vd=
tonyj@suse.de60043422007-08-07 22:28:47 -0700350 (struct acpi_video_device *)dev_get_drvdata(&od->dev);
Luming Yu23b0f012007-05-09 21:07:05 +0800351 return acpi_video_device_set_state(vd, state);
352}
353
354static struct output_properties acpi_output_properties = {
355 .set_state = acpi_video_output_set,
356 .get_status = acpi_video_output_get,
357};
Zhang Rui702ed512008-01-17 15:51:22 +0800358
359
360/* thermal cooling device callbacks */
361static int video_get_max_state(struct thermal_cooling_device *cdev, char *buf)
362{
363 struct acpi_device *device = cdev->devdata;
364 struct acpi_video_device *video = acpi_driver_data(device);
365
366 return sprintf(buf, "%d\n", video->brightness->count - 3);
367}
368
369static int video_get_cur_state(struct thermal_cooling_device *cdev, char *buf)
370{
371 struct acpi_device *device = cdev->devdata;
372 struct acpi_video_device *video = acpi_driver_data(device);
Matthew Wilcox27663c52008-10-10 02:22:59 -0400373 unsigned long long level;
Zhang Rui702ed512008-01-17 15:51:22 +0800374 int state;
375
376 acpi_video_device_lcd_get_level_current(video, &level);
377 for (state = 2; state < video->brightness->count; state++)
378 if (level == video->brightness->levels[state])
379 return sprintf(buf, "%d\n",
380 video->brightness->count - state - 1);
381
382 return -EINVAL;
383}
384
385static int
386video_set_cur_state(struct thermal_cooling_device *cdev, unsigned int state)
387{
388 struct acpi_device *device = cdev->devdata;
389 struct acpi_video_device *video = acpi_driver_data(device);
390 int level;
391
392 if ( state >= video->brightness->count - 2)
393 return -EINVAL;
394
395 state = video->brightness->count - state;
396 level = video->brightness->levels[state -1];
397 return acpi_video_device_lcd_set_level(video, level);
398}
399
400static struct thermal_cooling_device_ops video_cooling_ops = {
401 .get_max_state = video_get_max_state,
402 .get_cur_state = video_get_cur_state,
403 .set_cur_state = video_set_cur_state,
404};
405
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406/* --------------------------------------------------------------------------
407 Video Management
408 -------------------------------------------------------------------------- */
409
410/* device */
411
412static int
Matthew Wilcox27663c52008-10-10 02:22:59 -0400413acpi_video_device_query(struct acpi_video_device *device, unsigned long long *state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414{
Len Brown4be44fc2005-08-05 00:44:28 -0400415 int status;
Patrick Mochel90130262006-05-19 16:54:48 -0400416
417 status = acpi_evaluate_integer(device->dev->handle, "_DGS", NULL, state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418
Patrick Mocheld550d982006-06-27 00:41:40 -0400419 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420}
421
422static int
Len Brown4be44fc2005-08-05 00:44:28 -0400423acpi_video_device_get_state(struct acpi_video_device *device,
Matthew Wilcox27663c52008-10-10 02:22:59 -0400424 unsigned long long *state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425{
Len Brown4be44fc2005-08-05 00:44:28 -0400426 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427
Patrick Mochel90130262006-05-19 16:54:48 -0400428 status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429
Patrick Mocheld550d982006-06-27 00:41:40 -0400430 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431}
432
433static int
Len Brown4be44fc2005-08-05 00:44:28 -0400434acpi_video_device_set_state(struct acpi_video_device *device, int state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435{
Len Brown4be44fc2005-08-05 00:44:28 -0400436 int status;
437 union acpi_object arg0 = { ACPI_TYPE_INTEGER };
438 struct acpi_object_list args = { 1, &arg0 };
Matthew Wilcox27663c52008-10-10 02:22:59 -0400439 unsigned long long ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441
442 arg0.integer.value = state;
Patrick Mochel90130262006-05-19 16:54:48 -0400443 status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444
Patrick Mocheld550d982006-06-27 00:41:40 -0400445 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446}
447
448static int
Len Brown4be44fc2005-08-05 00:44:28 -0400449acpi_video_device_lcd_query_levels(struct acpi_video_device *device,
450 union acpi_object **levels)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451{
Len Brown4be44fc2005-08-05 00:44:28 -0400452 int status;
453 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
454 union acpi_object *obj;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456
457 *levels = NULL;
458
Patrick Mochel90130262006-05-19 16:54:48 -0400459 status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 if (!ACPI_SUCCESS(status))
Patrick Mocheld550d982006-06-27 00:41:40 -0400461 return status;
Len Brown4be44fc2005-08-05 00:44:28 -0400462 obj = (union acpi_object *)buffer.pointer;
Adrian Bunk6665bda2006-03-11 10:12:00 -0500463 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
Len Brown64684632006-06-26 23:41:38 -0400464 printk(KERN_ERR PREFIX "Invalid _BCL data\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465 status = -EFAULT;
466 goto err;
467 }
468
469 *levels = obj;
470
Patrick Mocheld550d982006-06-27 00:41:40 -0400471 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472
Len Brown4be44fc2005-08-05 00:44:28 -0400473 err:
Jesper Juhl6044ec82005-11-07 01:01:32 -0800474 kfree(buffer.pointer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475
Patrick Mocheld550d982006-06-27 00:41:40 -0400476 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477}
478
479static int
Len Brown4be44fc2005-08-05 00:44:28 -0400480acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481{
Alexey Starikovskiy4500ca82007-09-03 16:29:58 +0400482 int status = AE_OK;
Len Brown4be44fc2005-08-05 00:44:28 -0400483 union acpi_object arg0 = { ACPI_TYPE_INTEGER };
484 struct acpi_object_list args = { 1, &arg0 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486
487 arg0.integer.value = level;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488
Alexey Starikovskiy4500ca82007-09-03 16:29:58 +0400489 if (device->cap._BCM)
490 status = acpi_evaluate_object(device->dev->handle, "_BCM",
491 &args, NULL);
492 device->brightness->curr = level;
Patrick Mocheld550d982006-06-27 00:41:40 -0400493 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494}
495
496static int
Len Brown4be44fc2005-08-05 00:44:28 -0400497acpi_video_device_lcd_get_level_current(struct acpi_video_device *device,
Matthew Wilcox27663c52008-10-10 02:22:59 -0400498 unsigned long long *level)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499{
Alexey Starikovskiy4500ca82007-09-03 16:29:58 +0400500 if (device->cap._BQC)
501 return acpi_evaluate_integer(device->dev->handle, "_BQC", NULL,
502 level);
503 *level = device->brightness->curr;
504 return AE_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505}
506
507static int
Len Brown4be44fc2005-08-05 00:44:28 -0400508acpi_video_device_EDID(struct acpi_video_device *device,
509 union acpi_object **edid, ssize_t length)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510{
Len Brown4be44fc2005-08-05 00:44:28 -0400511 int status;
512 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
513 union acpi_object *obj;
514 union acpi_object arg0 = { ACPI_TYPE_INTEGER };
515 struct acpi_object_list args = { 1, &arg0 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517
518 *edid = NULL;
519
520 if (!device)
Patrick Mocheld550d982006-06-27 00:41:40 -0400521 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522 if (length == 128)
523 arg0.integer.value = 1;
524 else if (length == 256)
525 arg0.integer.value = 2;
526 else
Patrick Mocheld550d982006-06-27 00:41:40 -0400527 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528
Patrick Mochel90130262006-05-19 16:54:48 -0400529 status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530 if (ACPI_FAILURE(status))
Patrick Mocheld550d982006-06-27 00:41:40 -0400531 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200533 obj = buffer.pointer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534
535 if (obj && obj->type == ACPI_TYPE_BUFFER)
536 *edid = obj;
537 else {
Len Brown64684632006-06-26 23:41:38 -0400538 printk(KERN_ERR PREFIX "Invalid _DDC data\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539 status = -EFAULT;
540 kfree(obj);
541 }
542
Patrick Mocheld550d982006-06-27 00:41:40 -0400543 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544}
545
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546/* bus */
547
548static int
Len Brown4be44fc2005-08-05 00:44:28 -0400549acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550{
Len Brown4be44fc2005-08-05 00:44:28 -0400551 int status;
Matthew Wilcox27663c52008-10-10 02:22:59 -0400552 unsigned long long tmp;
Len Brown4be44fc2005-08-05 00:44:28 -0400553 union acpi_object arg0 = { ACPI_TYPE_INTEGER };
554 struct acpi_object_list args = { 1, &arg0 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556
557 arg0.integer.value = option;
558
Patrick Mochel90130262006-05-19 16:54:48 -0400559 status = acpi_evaluate_integer(video->device->handle, "_SPD", &args, &tmp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560 if (ACPI_SUCCESS(status))
Len Brown4be44fc2005-08-05 00:44:28 -0400561 status = tmp ? (-EINVAL) : (AE_OK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562
Patrick Mocheld550d982006-06-27 00:41:40 -0400563 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564}
565
566static int
Matthew Wilcox27663c52008-10-10 02:22:59 -0400567acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long long *id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568{
569 int status;
570
Patrick Mochel90130262006-05-19 16:54:48 -0400571 status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572
Patrick Mocheld550d982006-06-27 00:41:40 -0400573 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574}
575
576static int
Len Brown4be44fc2005-08-05 00:44:28 -0400577acpi_video_bus_POST_options(struct acpi_video_bus *video,
Matthew Wilcox27663c52008-10-10 02:22:59 -0400578 unsigned long long *options)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579{
Len Brown4be44fc2005-08-05 00:44:28 -0400580 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581
Patrick Mochel90130262006-05-19 16:54:48 -0400582 status = acpi_evaluate_integer(video->device->handle, "_VPO", NULL, options);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583 *options &= 3;
584
Patrick Mocheld550d982006-06-27 00:41:40 -0400585 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586}
587
588/*
589 * Arg:
590 * video : video bus device pointer
591 * bios_flag :
592 * 0. The system BIOS should NOT automatically switch(toggle)
593 * the active display output.
594 * 1. The system BIOS should automatically switch (toggle) the
Julius Volz98fb8fe2007-02-20 16:38:40 +0100595 * active display output. No switch event.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596 * 2. The _DGS value should be locked.
597 * 3. The system BIOS should not automatically switch (toggle) the
598 * active display output, but instead generate the display switch
599 * event notify code.
600 * lcd_flag :
601 * 0. The system BIOS should automatically control the brightness level
Julius Volz98fb8fe2007-02-20 16:38:40 +0100602 * of the LCD when the power changes from AC to DC
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603 * 1. The system BIOS should NOT automatically control the brightness
Julius Volz98fb8fe2007-02-20 16:38:40 +0100604 * level of the LCD when the power changes from AC to DC.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 * Return Value:
606 * -1 wrong arg.
607 */
608
609static int
Len Brown4be44fc2005-08-05 00:44:28 -0400610acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611{
Len Brown4be44fc2005-08-05 00:44:28 -0400612 acpi_integer status = 0;
613 union acpi_object arg0 = { ACPI_TYPE_INTEGER };
614 struct acpi_object_list args = { 1, &arg0 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616
Len Brown4be44fc2005-08-05 00:44:28 -0400617 if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618 status = -1;
619 goto Failed;
620 }
621 arg0.integer.value = (lcd_flag << 2) | bios_flag;
622 video->dos_setting = arg0.integer.value;
Patrick Mochel90130262006-05-19 16:54:48 -0400623 acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624
Len Brown4be44fc2005-08-05 00:44:28 -0400625 Failed:
Patrick Mocheld550d982006-06-27 00:41:40 -0400626 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627}
628
629/*
630 * Arg:
631 * device : video output device (LCD, CRT, ..)
632 *
633 * Return Value:
Julia Jomantaite469778c2008-06-23 22:50:42 +0100634 * Maximum brightness level
635 *
636 * Allocate and initialize device->brightness.
637 */
638
639static int
640acpi_video_init_brightness(struct acpi_video_device *device)
641{
642 union acpi_object *obj = NULL;
643 int i, max_level = 0, count = 0;
644 union acpi_object *o;
645 struct acpi_video_device_brightness *br = NULL;
646
647 if (!ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) {
648 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available "
649 "LCD brightness level\n"));
650 goto out;
651 }
652
653 if (obj->package.count < 2)
654 goto out;
655
656 br = kzalloc(sizeof(*br), GFP_KERNEL);
657 if (!br) {
658 printk(KERN_ERR "can't allocate memory\n");
659 goto out;
660 }
661
662 br->levels = kmalloc(obj->package.count * sizeof *(br->levels),
663 GFP_KERNEL);
664 if (!br->levels)
665 goto out_free;
666
667 for (i = 0; i < obj->package.count; i++) {
668 o = (union acpi_object *)&obj->package.elements[i];
669 if (o->type != ACPI_TYPE_INTEGER) {
670 printk(KERN_ERR PREFIX "Invalid data\n");
671 continue;
672 }
673 br->levels[count] = (u32) o->integer.value;
674
675 if (br->levels[count] > max_level)
676 max_level = br->levels[count];
677 count++;
678 }
679
680 if (count < 2)
681 goto out_free_levels;
682
683 br->count = count;
684 device->brightness = br;
685 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "found %d brightness levels\n", count));
686 kfree(obj);
687 return max_level;
688
689out_free_levels:
690 kfree(br->levels);
691out_free:
692 kfree(br);
693out:
694 device->brightness = NULL;
695 kfree(obj);
696 return 0;
697}
698
699/*
700 * Arg:
701 * device : video output device (LCD, CRT, ..)
702 *
703 * Return Value:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700704 * None
705 *
Julius Volz98fb8fe2007-02-20 16:38:40 +0100706 * Find out all required AML methods defined under the output
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707 * device.
708 */
709
Len Brown4be44fc2005-08-05 00:44:28 -0400710static void acpi_video_device_find_cap(struct acpi_video_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700711{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700712 acpi_handle h_dummy1;
Yu Luming2f3d0002006-11-11 02:40:34 +0800713 u32 max_level = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715
William Lee Irwin III98934de2007-12-12 03:56:55 -0800716 memset(&device->cap, 0, sizeof(device->cap));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717
Patrick Mochel90130262006-05-19 16:54:48 -0400718 if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700719 device->cap._ADR = 1;
720 }
Patrick Mochel90130262006-05-19 16:54:48 -0400721 if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) {
Len Brown4be44fc2005-08-05 00:44:28 -0400722 device->cap._BCL = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723 }
Patrick Mochel90130262006-05-19 16:54:48 -0400724 if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) {
Len Brown4be44fc2005-08-05 00:44:28 -0400725 device->cap._BCM = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726 }
Yu Luming2f3d0002006-11-11 02:40:34 +0800727 if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1)))
728 device->cap._BQC = 1;
Patrick Mochel90130262006-05-19 16:54:48 -0400729 if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) {
Len Brown4be44fc2005-08-05 00:44:28 -0400730 device->cap._DDC = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731 }
Patrick Mochel90130262006-05-19 16:54:48 -0400732 if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733 device->cap._DCS = 1;
734 }
Patrick Mochel90130262006-05-19 16:54:48 -0400735 if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736 device->cap._DGS = 1;
737 }
Patrick Mochel90130262006-05-19 16:54:48 -0400738 if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739 device->cap._DSS = 1;
740 }
741
Thomas Renningerc3d6de62008-08-01 17:37:55 +0200742 if (acpi_video_backlight_support())
743 max_level = acpi_video_init_brightness(device);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744
Zhao Yakuic2c78902008-07-17 10:46:05 +0800745 if (device->cap._BCL && device->cap._BCM && max_level > 0) {
Zhang Rui702ed512008-01-17 15:51:22 +0800746 int result;
Yu Luming2f3d0002006-11-11 02:40:34 +0800747 static int count = 0;
748 char *name;
Yu Luming2f3d0002006-11-11 02:40:34 +0800749 name = kzalloc(MAX_NAME_LEN, GFP_KERNEL);
750 if (!name)
751 return;
752
Yu Luming2f3d0002006-11-11 02:40:34 +0800753 sprintf(name, "acpi_video%d", count++);
Yu Luming2f3d0002006-11-11 02:40:34 +0800754 device->backlight = backlight_device_register(name,
Richard Purdie599a52d2007-02-10 23:07:48 +0000755 NULL, device, &acpi_backlight_ops);
Matthew Garrett38531e62007-12-26 02:03:26 +0000756 device->backlight->props.max_brightness = device->brightness->count-3;
Zhao Yakuic2c78902008-07-17 10:46:05 +0800757 /*
758 * If there exists the _BQC object, the _BQC object will be
759 * called to get the current backlight brightness. Otherwise
760 * the brightness will be set to the maximum.
761 */
762 if (device->cap._BQC)
763 device->backlight->props.brightness =
764 acpi_video_get_brightness(device->backlight);
765 else
766 device->backlight->props.brightness =
767 device->backlight->props.max_brightness;
Richard Purdie599a52d2007-02-10 23:07:48 +0000768 backlight_update_status(device->backlight);
Yu Luming2f3d0002006-11-11 02:40:34 +0800769 kfree(name);
Zhang Rui702ed512008-01-17 15:51:22 +0800770
771 device->cdev = thermal_cooling_device_register("LCD",
772 device->dev, &video_cooling_ops);
Thomas Sujith43ff39f2008-02-15 18:29:18 -0500773 if (IS_ERR(device->cdev))
774 return;
775
Greg Kroah-Hartmanfc3a8822008-05-02 06:02:41 +0200776 dev_info(&device->dev->dev, "registered as cooling_device%d\n",
777 device->cdev->id);
Julia Lawall90300622008-04-11 10:09:24 +0800778 result = sysfs_create_link(&device->dev->dev.kobj,
779 &device->cdev->device.kobj,
780 "thermal_cooling");
781 if (result)
782 printk(KERN_ERR PREFIX "Create sysfs link\n");
783 result = sysfs_create_link(&device->cdev->device.kobj,
784 &device->dev->dev.kobj, "device");
785 if (result)
786 printk(KERN_ERR PREFIX "Create sysfs link\n");
787
Yu Luming2f3d0002006-11-11 02:40:34 +0800788 }
Thomas Renningerc3d6de62008-08-01 17:37:55 +0200789
790 if (acpi_video_display_switch_support()) {
791
792 if (device->cap._DCS && device->cap._DSS) {
793 static int count;
794 char *name;
795 name = kzalloc(MAX_NAME_LEN, GFP_KERNEL);
796 if (!name)
797 return;
798 sprintf(name, "acpi_video%d", count++);
799 device->output_dev = video_output_register(name,
800 NULL, device, &acpi_output_properties);
801 kfree(name);
802 }
Luming Yu23b0f012007-05-09 21:07:05 +0800803 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700804}
805
806/*
807 * Arg:
808 * device : video output device (VGA)
809 *
810 * Return Value:
811 * None
812 *
Julius Volz98fb8fe2007-02-20 16:38:40 +0100813 * Find out all required AML methods defined under the video bus device.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814 */
815
Len Brown4be44fc2005-08-05 00:44:28 -0400816static void acpi_video_bus_find_cap(struct acpi_video_bus *video)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817{
Len Brown4be44fc2005-08-05 00:44:28 -0400818 acpi_handle h_dummy1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819
William Lee Irwin III98934de2007-12-12 03:56:55 -0800820 memset(&video->cap, 0, sizeof(video->cap));
Patrick Mochel90130262006-05-19 16:54:48 -0400821 if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822 video->cap._DOS = 1;
823 }
Patrick Mochel90130262006-05-19 16:54:48 -0400824 if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825 video->cap._DOD = 1;
826 }
Patrick Mochel90130262006-05-19 16:54:48 -0400827 if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700828 video->cap._ROM = 1;
829 }
Patrick Mochel90130262006-05-19 16:54:48 -0400830 if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831 video->cap._GPD = 1;
832 }
Patrick Mochel90130262006-05-19 16:54:48 -0400833 if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834 video->cap._SPD = 1;
835 }
Patrick Mochel90130262006-05-19 16:54:48 -0400836 if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837 video->cap._VPO = 1;
838 }
839}
840
841/*
842 * Check whether the video bus device has required AML method to
843 * support the desired features
844 */
845
Len Brown4be44fc2005-08-05 00:44:28 -0400846static int acpi_video_bus_check(struct acpi_video_bus *video)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847{
Len Brown4be44fc2005-08-05 00:44:28 -0400848 acpi_status status = -ENOENT;
Thomas Renninger22c13f92008-08-01 17:37:54 +0200849 struct device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850
851 if (!video)
Patrick Mocheld550d982006-06-27 00:41:40 -0400852 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853
Thomas Renninger22c13f92008-08-01 17:37:54 +0200854 dev = acpi_get_physical_pci_device(video->device->handle);
855 if (!dev)
856 return -ENODEV;
857 put_device(dev);
858
Linus Torvalds1da177e2005-04-16 15:20:36 -0700859 /* Since there is no HID, CID and so on for VGA driver, we have
860 * to check well known required nodes.
861 */
862
Julius Volz98fb8fe2007-02-20 16:38:40 +0100863 /* Does this device support video switching? */
Len Brown4be44fc2005-08-05 00:44:28 -0400864 if (video->cap._DOS) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865 video->flags.multihead = 1;
866 status = 0;
867 }
868
Julius Volz98fb8fe2007-02-20 16:38:40 +0100869 /* Does this device support retrieving a video ROM? */
Len Brown4be44fc2005-08-05 00:44:28 -0400870 if (video->cap._ROM) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700871 video->flags.rom = 1;
872 status = 0;
873 }
874
Julius Volz98fb8fe2007-02-20 16:38:40 +0100875 /* Does this device support configuring which video device to POST? */
Len Brown4be44fc2005-08-05 00:44:28 -0400876 if (video->cap._GPD && video->cap._SPD && video->cap._VPO) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877 video->flags.post = 1;
878 status = 0;
879 }
880
Patrick Mocheld550d982006-06-27 00:41:40 -0400881 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882}
883
884/* --------------------------------------------------------------------------
885 FS Interface (/proc)
886 -------------------------------------------------------------------------- */
887
Len Brown4be44fc2005-08-05 00:44:28 -0400888static struct proc_dir_entry *acpi_video_dir;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700889
890/* video devices */
891
Len Brown4be44fc2005-08-05 00:44:28 -0400892static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200894 struct acpi_video_device *dev = seq->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896
897 if (!dev)
898 goto end;
899
900 seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id);
901 seq_printf(seq, "type: ");
902 if (dev->flags.crt)
903 seq_printf(seq, "CRT\n");
904 else if (dev->flags.lcd)
905 seq_printf(seq, "LCD\n");
906 else if (dev->flags.tvout)
907 seq_printf(seq, "TVOUT\n");
Rui Zhang82cae992007-01-03 23:40:53 -0500908 else if (dev->flags.dvi)
909 seq_printf(seq, "DVI\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910 else
911 seq_printf(seq, "UNKNOWN\n");
912
Len Brown4be44fc2005-08-05 00:44:28 -0400913 seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914
Len Brown4be44fc2005-08-05 00:44:28 -0400915 end:
Patrick Mocheld550d982006-06-27 00:41:40 -0400916 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917}
918
919static int
Len Brown4be44fc2005-08-05 00:44:28 -0400920acpi_video_device_info_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921{
922 return single_open(file, acpi_video_device_info_seq_show,
923 PDE(inode)->data);
924}
925
Len Brown4be44fc2005-08-05 00:44:28 -0400926static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927{
Len Brown4be44fc2005-08-05 00:44:28 -0400928 int status;
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200929 struct acpi_video_device *dev = seq->private;
Matthew Wilcox27663c52008-10-10 02:22:59 -0400930 unsigned long long state;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931
Linus Torvalds1da177e2005-04-16 15:20:36 -0700932
933 if (!dev)
934 goto end;
935
936 status = acpi_video_device_get_state(dev, &state);
937 seq_printf(seq, "state: ");
938 if (ACPI_SUCCESS(status))
Matthew Wilcox27663c52008-10-10 02:22:59 -0400939 seq_printf(seq, "0x%02llx\n", state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700940 else
941 seq_printf(seq, "<not supported>\n");
942
943 status = acpi_video_device_query(dev, &state);
944 seq_printf(seq, "query: ");
945 if (ACPI_SUCCESS(status))
Matthew Wilcox27663c52008-10-10 02:22:59 -0400946 seq_printf(seq, "0x%02llx\n", state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700947 else
948 seq_printf(seq, "<not supported>\n");
949
Len Brown4be44fc2005-08-05 00:44:28 -0400950 end:
Patrick Mocheld550d982006-06-27 00:41:40 -0400951 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700952}
953
954static int
Len Brown4be44fc2005-08-05 00:44:28 -0400955acpi_video_device_state_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956{
957 return single_open(file, acpi_video_device_state_seq_show,
958 PDE(inode)->data);
959}
960
961static ssize_t
Len Brown4be44fc2005-08-05 00:44:28 -0400962acpi_video_device_write_state(struct file *file,
963 const char __user * buffer,
964 size_t count, loff_t * data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700965{
Len Brown4be44fc2005-08-05 00:44:28 -0400966 int status;
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200967 struct seq_file *m = file->private_data;
968 struct acpi_video_device *dev = m->private;
Len Brown4be44fc2005-08-05 00:44:28 -0400969 char str[12] = { 0 };
970 u32 state = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971
Linus Torvalds1da177e2005-04-16 15:20:36 -0700972
973 if (!dev || count + 1 > sizeof str)
Patrick Mocheld550d982006-06-27 00:41:40 -0400974 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975
976 if (copy_from_user(str, buffer, count))
Patrick Mocheld550d982006-06-27 00:41:40 -0400977 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700978
979 str[count] = 0;
980 state = simple_strtoul(str, NULL, 0);
Len Brown4be44fc2005-08-05 00:44:28 -0400981 state &= ((1ul << 31) | (1ul << 30) | (1ul << 0));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982
983 status = acpi_video_device_set_state(dev, state);
984
985 if (status)
Patrick Mocheld550d982006-06-27 00:41:40 -0400986 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700987
Patrick Mocheld550d982006-06-27 00:41:40 -0400988 return count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700989}
990
991static int
Len Brown4be44fc2005-08-05 00:44:28 -0400992acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700993{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200994 struct acpi_video_device *dev = seq->private;
Len Brown4be44fc2005-08-05 00:44:28 -0400995 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700996
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997
998 if (!dev || !dev->brightness) {
999 seq_printf(seq, "<not supported>\n");
Patrick Mocheld550d982006-06-27 00:41:40 -04001000 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001001 }
1002
1003 seq_printf(seq, "levels: ");
1004 for (i = 0; i < dev->brightness->count; i++)
1005 seq_printf(seq, " %d", dev->brightness->levels[i]);
1006 seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr);
1007
Patrick Mocheld550d982006-06-27 00:41:40 -04001008 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009}
1010
1011static int
Len Brown4be44fc2005-08-05 00:44:28 -04001012acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001013{
1014 return single_open(file, acpi_video_device_brightness_seq_show,
1015 PDE(inode)->data);
1016}
1017
1018static ssize_t
Len Brown4be44fc2005-08-05 00:44:28 -04001019acpi_video_device_write_brightness(struct file *file,
1020 const char __user * buffer,
1021 size_t count, loff_t * data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001022{
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001023 struct seq_file *m = file->private_data;
1024 struct acpi_video_device *dev = m->private;
Danny Baumannc88c5782007-11-02 13:47:53 +01001025 char str[5] = { 0 };
Len Brown4be44fc2005-08-05 00:44:28 -04001026 unsigned int level = 0;
1027 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001028
Linus Torvalds1da177e2005-04-16 15:20:36 -07001029
Thomas Renninger59d399d2005-11-08 05:27:00 -05001030 if (!dev || !dev->brightness || count + 1 > sizeof str)
Patrick Mocheld550d982006-06-27 00:41:40 -04001031 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001032
1033 if (copy_from_user(str, buffer, count))
Patrick Mocheld550d982006-06-27 00:41:40 -04001034 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001035
1036 str[count] = 0;
1037 level = simple_strtoul(str, NULL, 0);
Len Brown4be44fc2005-08-05 00:44:28 -04001038
Linus Torvalds1da177e2005-04-16 15:20:36 -07001039 if (level > 100)
Patrick Mocheld550d982006-06-27 00:41:40 -04001040 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001041
Julius Volz98fb8fe2007-02-20 16:38:40 +01001042 /* validate through the list of available levels */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001043 for (i = 0; i < dev->brightness->count; i++)
1044 if (level == dev->brightness->levels[i]) {
Len Brown4be44fc2005-08-05 00:44:28 -04001045 if (ACPI_SUCCESS
1046 (acpi_video_device_lcd_set_level(dev, level)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001047 dev->brightness->curr = level;
1048 break;
1049 }
1050
Patrick Mocheld550d982006-06-27 00:41:40 -04001051 return count;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001052}
1053
Len Brown4be44fc2005-08-05 00:44:28 -04001054static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001055{
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001056 struct acpi_video_device *dev = seq->private;
Len Brown4be44fc2005-08-05 00:44:28 -04001057 int status;
1058 int i;
1059 union acpi_object *edid = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001060
Linus Torvalds1da177e2005-04-16 15:20:36 -07001061
1062 if (!dev)
1063 goto out;
1064
Len Brown4be44fc2005-08-05 00:44:28 -04001065 status = acpi_video_device_EDID(dev, &edid, 128);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001066 if (ACPI_FAILURE(status)) {
Len Brown4be44fc2005-08-05 00:44:28 -04001067 status = acpi_video_device_EDID(dev, &edid, 256);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001068 }
1069
1070 if (ACPI_FAILURE(status)) {
1071 goto out;
1072 }
1073
1074 if (edid && edid->type == ACPI_TYPE_BUFFER) {
1075 for (i = 0; i < edid->buffer.length; i++)
1076 seq_putc(seq, edid->buffer.pointer[i]);
1077 }
1078
Len Brown4be44fc2005-08-05 00:44:28 -04001079 out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001080 if (!edid)
1081 seq_printf(seq, "<not supported>\n");
1082 else
1083 kfree(edid);
1084
Patrick Mocheld550d982006-06-27 00:41:40 -04001085 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001086}
1087
1088static int
Len Brown4be44fc2005-08-05 00:44:28 -04001089acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001090{
1091 return single_open(file, acpi_video_device_EDID_seq_show,
1092 PDE(inode)->data);
1093}
1094
Len Brown4be44fc2005-08-05 00:44:28 -04001095static int acpi_video_device_add_fs(struct acpi_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001096{
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001097 struct proc_dir_entry *entry, *device_dir;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001098 struct acpi_video_device *vid_dev;
1099
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001100 vid_dev = acpi_driver_data(device);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001101 if (!vid_dev)
Patrick Mocheld550d982006-06-27 00:41:40 -04001102 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001103
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001104 device_dir = proc_mkdir(acpi_device_bid(device),
1105 vid_dev->video->dir);
1106 if (!device_dir)
1107 return -ENOMEM;
1108
1109 device_dir->owner = THIS_MODULE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001110
1111 /* 'info' [R] */
Alexey Dobriyane0066c4e2008-05-01 04:10:02 +04001112 entry = proc_create_data("info", S_IRUGO, device_dir,
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -07001113 &acpi_video_device_info_fops, acpi_driver_data(device));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001114 if (!entry)
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001115 goto err_remove_dir;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001116
1117 /* 'state' [R/W] */
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -07001118 acpi_video_device_state_fops.write = acpi_video_device_write_state;
1119 entry = proc_create_data("state", S_IFREG | S_IRUGO | S_IWUSR,
Alexey Dobriyane0066c4e2008-05-01 04:10:02 +04001120 device_dir,
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -07001121 &acpi_video_device_state_fops,
1122 acpi_driver_data(device));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001123 if (!entry)
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001124 goto err_remove_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001125
1126 /* 'brightness' [R/W] */
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -07001127 acpi_video_device_brightness_fops.write =
1128 acpi_video_device_write_brightness;
1129 entry = proc_create_data("brightness", S_IFREG | S_IRUGO | S_IWUSR,
Alexey Dobriyane0066c4e2008-05-01 04:10:02 +04001130 device_dir,
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -07001131 &acpi_video_device_brightness_fops,
1132 acpi_driver_data(device));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133 if (!entry)
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001134 goto err_remove_state;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001135
1136 /* 'EDID' [R] */
Alexey Dobriyane0066c4e2008-05-01 04:10:02 +04001137 entry = proc_create_data("EDID", S_IRUGO, device_dir,
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -07001138 &acpi_video_device_EDID_fops,
1139 acpi_driver_data(device));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001140 if (!entry)
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001141 goto err_remove_brightness;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001142
Alexey Dobriyane0066c4e2008-05-01 04:10:02 +04001143 acpi_device_dir(device) = device_dir;
1144
Patrick Mocheld550d982006-06-27 00:41:40 -04001145 return 0;
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001146
1147 err_remove_brightness:
1148 remove_proc_entry("brightness", device_dir);
1149 err_remove_state:
1150 remove_proc_entry("state", device_dir);
1151 err_remove_info:
1152 remove_proc_entry("info", device_dir);
1153 err_remove_dir:
1154 remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir);
1155 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001156}
1157
Len Brown4be44fc2005-08-05 00:44:28 -04001158static int acpi_video_device_remove_fs(struct acpi_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001159{
1160 struct acpi_video_device *vid_dev;
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001161 struct proc_dir_entry *device_dir;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001162
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001163 vid_dev = acpi_driver_data(device);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001164 if (!vid_dev || !vid_dev->video || !vid_dev->video->dir)
Patrick Mocheld550d982006-06-27 00:41:40 -04001165 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001166
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001167 device_dir = acpi_device_dir(device);
1168 if (device_dir) {
1169 remove_proc_entry("info", device_dir);
1170 remove_proc_entry("state", device_dir);
1171 remove_proc_entry("brightness", device_dir);
1172 remove_proc_entry("EDID", device_dir);
Len Brown4be44fc2005-08-05 00:44:28 -04001173 remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001174 acpi_device_dir(device) = NULL;
1175 }
1176
Patrick Mocheld550d982006-06-27 00:41:40 -04001177 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001178}
1179
Linus Torvalds1da177e2005-04-16 15:20:36 -07001180/* video bus */
Len Brown4be44fc2005-08-05 00:44:28 -04001181static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001182{
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001183 struct acpi_video_bus *video = seq->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001184
Linus Torvalds1da177e2005-04-16 15:20:36 -07001185
1186 if (!video)
1187 goto end;
1188
1189 seq_printf(seq, "Switching heads: %s\n",
Len Brown4be44fc2005-08-05 00:44:28 -04001190 video->flags.multihead ? "yes" : "no");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001191 seq_printf(seq, "Video ROM: %s\n",
Len Brown4be44fc2005-08-05 00:44:28 -04001192 video->flags.rom ? "yes" : "no");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001193 seq_printf(seq, "Device to be POSTed on boot: %s\n",
Len Brown4be44fc2005-08-05 00:44:28 -04001194 video->flags.post ? "yes" : "no");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001195
Len Brown4be44fc2005-08-05 00:44:28 -04001196 end:
Patrick Mocheld550d982006-06-27 00:41:40 -04001197 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001198}
1199
Len Brown4be44fc2005-08-05 00:44:28 -04001200static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001201{
Len Brown4be44fc2005-08-05 00:44:28 -04001202 return single_open(file, acpi_video_bus_info_seq_show,
1203 PDE(inode)->data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001204}
1205
Len Brown4be44fc2005-08-05 00:44:28 -04001206static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001207{
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001208 struct acpi_video_bus *video = seq->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001209
Linus Torvalds1da177e2005-04-16 15:20:36 -07001210
1211 if (!video)
1212 goto end;
1213
Harvey Harrison96b2dd12008-03-05 18:24:51 -08001214 printk(KERN_INFO PREFIX "Please implement %s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001215 seq_printf(seq, "<TODO>\n");
1216
Len Brown4be44fc2005-08-05 00:44:28 -04001217 end:
Patrick Mocheld550d982006-06-27 00:41:40 -04001218 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001219}
1220
Len Brown4be44fc2005-08-05 00:44:28 -04001221static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001222{
1223 return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data);
1224}
1225
Len Brown4be44fc2005-08-05 00:44:28 -04001226static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001227{
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001228 struct acpi_video_bus *video = seq->private;
Matthew Wilcox27663c52008-10-10 02:22:59 -04001229 unsigned long long options;
Len Brown4be44fc2005-08-05 00:44:28 -04001230 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001231
Linus Torvalds1da177e2005-04-16 15:20:36 -07001232
1233 if (!video)
1234 goto end;
1235
1236 status = acpi_video_bus_POST_options(video, &options);
1237 if (ACPI_SUCCESS(status)) {
1238 if (!(options & 1)) {
Len Brown4be44fc2005-08-05 00:44:28 -04001239 printk(KERN_WARNING PREFIX
1240 "The motherboard VGA device is not listed as a possible POST device.\n");
1241 printk(KERN_WARNING PREFIX
Julius Volz98fb8fe2007-02-20 16:38:40 +01001242 "This indicates a BIOS bug. Please contact the manufacturer.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001243 }
Matthew Wilcox27663c52008-10-10 02:22:59 -04001244 printk("%llx\n", options);
Julius Volz98fb8fe2007-02-20 16:38:40 +01001245 seq_printf(seq, "can POST: <integrated video>");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001246 if (options & 2)
1247 seq_printf(seq, " <PCI video>");
1248 if (options & 4)
1249 seq_printf(seq, " <AGP video>");
1250 seq_putc(seq, '\n');
1251 } else
1252 seq_printf(seq, "<not supported>\n");
Len Brown4be44fc2005-08-05 00:44:28 -04001253 end:
Patrick Mocheld550d982006-06-27 00:41:40 -04001254 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255}
1256
1257static int
Len Brown4be44fc2005-08-05 00:44:28 -04001258acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001259{
Len Brown4be44fc2005-08-05 00:44:28 -04001260 return single_open(file, acpi_video_bus_POST_info_seq_show,
1261 PDE(inode)->data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262}
1263
Len Brown4be44fc2005-08-05 00:44:28 -04001264static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001265{
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001266 struct acpi_video_bus *video = seq->private;
Len Brown4be44fc2005-08-05 00:44:28 -04001267 int status;
Matthew Wilcox27663c52008-10-10 02:22:59 -04001268 unsigned long long id;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269
Linus Torvalds1da177e2005-04-16 15:20:36 -07001270
1271 if (!video)
1272 goto end;
1273
Len Brown4be44fc2005-08-05 00:44:28 -04001274 status = acpi_video_bus_get_POST(video, &id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275 if (!ACPI_SUCCESS(status)) {
1276 seq_printf(seq, "<not supported>\n");
1277 goto end;
1278 }
Julius Volz98fb8fe2007-02-20 16:38:40 +01001279 seq_printf(seq, "device POSTed is <%s>\n", device_decode[id & 3]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001280
Len Brown4be44fc2005-08-05 00:44:28 -04001281 end:
Patrick Mocheld550d982006-06-27 00:41:40 -04001282 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001283}
1284
Len Brown4be44fc2005-08-05 00:44:28 -04001285static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001286{
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001287 struct acpi_video_bus *video = seq->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001288
Linus Torvalds1da177e2005-04-16 15:20:36 -07001289
Len Brown4be44fc2005-08-05 00:44:28 -04001290 seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001291
Patrick Mocheld550d982006-06-27 00:41:40 -04001292 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001293}
1294
Len Brown4be44fc2005-08-05 00:44:28 -04001295static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001296{
Len Brown4be44fc2005-08-05 00:44:28 -04001297 return single_open(file, acpi_video_bus_POST_seq_show,
1298 PDE(inode)->data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001299}
1300
Len Brown4be44fc2005-08-05 00:44:28 -04001301static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001302{
1303 return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data);
1304}
1305
1306static ssize_t
Len Brown4be44fc2005-08-05 00:44:28 -04001307acpi_video_bus_write_POST(struct file *file,
1308 const char __user * buffer,
1309 size_t count, loff_t * data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001310{
Len Brown4be44fc2005-08-05 00:44:28 -04001311 int status;
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001312 struct seq_file *m = file->private_data;
1313 struct acpi_video_bus *video = m->private;
Len Brown4be44fc2005-08-05 00:44:28 -04001314 char str[12] = { 0 };
Matthew Wilcox27663c52008-10-10 02:22:59 -04001315 unsigned long long opt, options;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001316
Linus Torvalds1da177e2005-04-16 15:20:36 -07001317
Linus Torvalds1da177e2005-04-16 15:20:36 -07001318 if (!video || count + 1 > sizeof str)
Patrick Mocheld550d982006-06-27 00:41:40 -04001319 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001320
1321 status = acpi_video_bus_POST_options(video, &options);
1322 if (!ACPI_SUCCESS(status))
Patrick Mocheld550d982006-06-27 00:41:40 -04001323 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001324
1325 if (copy_from_user(str, buffer, count))
Patrick Mocheld550d982006-06-27 00:41:40 -04001326 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001327
1328 str[count] = 0;
1329 opt = strtoul(str, NULL, 0);
1330 if (opt > 3)
Patrick Mocheld550d982006-06-27 00:41:40 -04001331 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332
Julius Volz98fb8fe2007-02-20 16:38:40 +01001333 /* just in case an OEM 'forgot' the motherboard... */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001334 options |= 1;
1335
1336 if (options & (1ul << opt)) {
Len Brown4be44fc2005-08-05 00:44:28 -04001337 status = acpi_video_bus_set_POST(video, opt);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001338 if (!ACPI_SUCCESS(status))
Patrick Mocheld550d982006-06-27 00:41:40 -04001339 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001340
1341 }
1342
Patrick Mocheld550d982006-06-27 00:41:40 -04001343 return count;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344}
1345
1346static ssize_t
Len Brown4be44fc2005-08-05 00:44:28 -04001347acpi_video_bus_write_DOS(struct file *file,
1348 const char __user * buffer,
1349 size_t count, loff_t * data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001350{
Len Brown4be44fc2005-08-05 00:44:28 -04001351 int status;
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001352 struct seq_file *m = file->private_data;
1353 struct acpi_video_bus *video = m->private;
Len Brown4be44fc2005-08-05 00:44:28 -04001354 char str[12] = { 0 };
1355 unsigned long opt;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001356
Linus Torvalds1da177e2005-04-16 15:20:36 -07001357
Linus Torvalds1da177e2005-04-16 15:20:36 -07001358 if (!video || count + 1 > sizeof str)
Patrick Mocheld550d982006-06-27 00:41:40 -04001359 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001360
1361 if (copy_from_user(str, buffer, count))
Patrick Mocheld550d982006-06-27 00:41:40 -04001362 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001363
1364 str[count] = 0;
1365 opt = strtoul(str, NULL, 0);
1366 if (opt > 7)
Patrick Mocheld550d982006-06-27 00:41:40 -04001367 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001368
Len Brown4be44fc2005-08-05 00:44:28 -04001369 status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001370
1371 if (!ACPI_SUCCESS(status))
Patrick Mocheld550d982006-06-27 00:41:40 -04001372 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373
Patrick Mocheld550d982006-06-27 00:41:40 -04001374 return count;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001375}
1376
Len Brown4be44fc2005-08-05 00:44:28 -04001377static int acpi_video_bus_add_fs(struct acpi_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001378{
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001379 struct acpi_video_bus *video = acpi_driver_data(device);
1380 struct proc_dir_entry *device_dir;
1381 struct proc_dir_entry *entry;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001382
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001383 device_dir = proc_mkdir(acpi_device_bid(device), acpi_video_dir);
1384 if (!device_dir)
1385 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001386
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001387 device_dir->owner = THIS_MODULE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001388
1389 /* 'info' [R] */
Alexey Dobriyane0066c4e2008-05-01 04:10:02 +04001390 entry = proc_create_data("info", S_IRUGO, device_dir,
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -07001391 &acpi_video_bus_info_fops,
1392 acpi_driver_data(device));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001393 if (!entry)
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001394 goto err_remove_dir;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001395
1396 /* 'ROM' [R] */
Alexey Dobriyane0066c4e2008-05-01 04:10:02 +04001397 entry = proc_create_data("ROM", S_IRUGO, device_dir,
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -07001398 &acpi_video_bus_ROM_fops,
1399 acpi_driver_data(device));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001400 if (!entry)
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001401 goto err_remove_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001402
1403 /* 'POST_info' [R] */
Alexey Dobriyane0066c4e2008-05-01 04:10:02 +04001404 entry = proc_create_data("POST_info", S_IRUGO, device_dir,
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -07001405 &acpi_video_bus_POST_info_fops,
1406 acpi_driver_data(device));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001407 if (!entry)
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001408 goto err_remove_rom;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001409
1410 /* 'POST' [R/W] */
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -07001411 acpi_video_bus_POST_fops.write = acpi_video_bus_write_POST;
Linus Torvalds08acd4f2008-04-30 11:52:52 -07001412 entry = proc_create_data("POST", S_IFREG | S_IRUGO | S_IWUSR,
Alexey Dobriyane0066c4e2008-05-01 04:10:02 +04001413 device_dir,
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -07001414 &acpi_video_bus_POST_fops,
1415 acpi_driver_data(device));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001416 if (!entry)
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001417 goto err_remove_post_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001418
1419 /* 'DOS' [R/W] */
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -07001420 acpi_video_bus_DOS_fops.write = acpi_video_bus_write_DOS;
Linus Torvalds08acd4f2008-04-30 11:52:52 -07001421 entry = proc_create_data("DOS", S_IFREG | S_IRUGO | S_IWUSR,
Alexey Dobriyane0066c4e2008-05-01 04:10:02 +04001422 device_dir,
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -07001423 &acpi_video_bus_DOS_fops,
1424 acpi_driver_data(device));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001425 if (!entry)
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001426 goto err_remove_post;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001427
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001428 video->dir = acpi_device_dir(device) = device_dir;
Patrick Mocheld550d982006-06-27 00:41:40 -04001429 return 0;
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001430
1431 err_remove_post:
1432 remove_proc_entry("POST", device_dir);
1433 err_remove_post_info:
1434 remove_proc_entry("POST_info", device_dir);
1435 err_remove_rom:
1436 remove_proc_entry("ROM", device_dir);
1437 err_remove_info:
1438 remove_proc_entry("info", device_dir);
1439 err_remove_dir:
1440 remove_proc_entry(acpi_device_bid(device), acpi_video_dir);
1441 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001442}
1443
Len Brown4be44fc2005-08-05 00:44:28 -04001444static int acpi_video_bus_remove_fs(struct acpi_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001445{
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001446 struct proc_dir_entry *device_dir = acpi_device_dir(device);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001447
Dmitry Torokhov251cb0b2007-11-05 11:43:34 -05001448 if (device_dir) {
1449 remove_proc_entry("info", device_dir);
1450 remove_proc_entry("ROM", device_dir);
1451 remove_proc_entry("POST_info", device_dir);
1452 remove_proc_entry("POST", device_dir);
1453 remove_proc_entry("DOS", device_dir);
Len Brown4be44fc2005-08-05 00:44:28 -04001454 remove_proc_entry(acpi_device_bid(device), acpi_video_dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001455 acpi_device_dir(device) = NULL;
1456 }
1457
Patrick Mocheld550d982006-06-27 00:41:40 -04001458 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001459}
1460
1461/* --------------------------------------------------------------------------
1462 Driver Interface
1463 -------------------------------------------------------------------------- */
1464
1465/* device interface */
Rui Zhang82cae992007-01-03 23:40:53 -05001466static struct acpi_video_device_attrib*
1467acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id)
1468{
Dmitry Torokhov78eed022007-11-05 11:43:33 -05001469 struct acpi_video_enumerated_device *ids;
1470 int i;
Rui Zhang82cae992007-01-03 23:40:53 -05001471
Dmitry Torokhov78eed022007-11-05 11:43:33 -05001472 for (i = 0; i < video->attached_count; i++) {
1473 ids = &video->attached_array[i];
1474 if ((ids->value.int_val & 0xffff) == device_id)
1475 return &ids->value.attrib;
1476 }
1477
Rui Zhang82cae992007-01-03 23:40:53 -05001478 return NULL;
1479}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001480
1481static int
Len Brown4be44fc2005-08-05 00:44:28 -04001482acpi_video_bus_get_one_device(struct acpi_device *device,
1483 struct acpi_video_bus *video)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001484{
Matthew Wilcox27663c52008-10-10 02:22:59 -04001485 unsigned long long device_id;
Yu, Luming973bf492006-04-27 05:25:00 -04001486 int status;
Len Brown4be44fc2005-08-05 00:44:28 -04001487 struct acpi_video_device *data;
Rui Zhang82cae992007-01-03 23:40:53 -05001488 struct acpi_video_device_attrib* attribute;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001489
1490 if (!device || !video)
Patrick Mocheld550d982006-06-27 00:41:40 -04001491 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001492
Len Brown4be44fc2005-08-05 00:44:28 -04001493 status =
1494 acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001495 if (ACPI_SUCCESS(status)) {
1496
Burman Yan36bcbec2006-12-19 12:56:11 -08001497 data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001498 if (!data)
Patrick Mocheld550d982006-06-27 00:41:40 -04001499 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001500
Linus Torvalds1da177e2005-04-16 15:20:36 -07001501 strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME);
1502 strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS);
Pavel Machekdb89b4f2008-09-22 14:37:34 -07001503 device->driver_data = data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001504
1505 data->device_id = device_id;
1506 data->video = video;
1507 data->dev = device;
1508
Rui Zhang82cae992007-01-03 23:40:53 -05001509 attribute = acpi_video_get_device_attr(video, device_id);
1510
1511 if((attribute != NULL) && attribute->device_id_scheme) {
1512 switch (attribute->display_type) {
1513 case ACPI_VIDEO_DISPLAY_CRT:
1514 data->flags.crt = 1;
1515 break;
1516 case ACPI_VIDEO_DISPLAY_TV:
1517 data->flags.tvout = 1;
1518 break;
1519 case ACPI_VIDEO_DISPLAY_DVI:
1520 data->flags.dvi = 1;
1521 break;
1522 case ACPI_VIDEO_DISPLAY_LCD:
1523 data->flags.lcd = 1;
1524 break;
1525 default:
1526 data->flags.unknown = 1;
1527 break;
1528 }
1529 if(attribute->bios_can_detect)
1530 data->flags.bios = 1;
1531 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -07001532 data->flags.unknown = 1;
Len Brown4be44fc2005-08-05 00:44:28 -04001533
Linus Torvalds1da177e2005-04-16 15:20:36 -07001534 acpi_video_device_bind(video, data);
1535 acpi_video_device_find_cap(data);
1536
Patrick Mochel90130262006-05-19 16:54:48 -04001537 status = acpi_install_notify_handler(device->handle,
Len Brown4be44fc2005-08-05 00:44:28 -04001538 ACPI_DEVICE_NOTIFY,
1539 acpi_video_device_notify,
1540 data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001541 if (ACPI_FAILURE(status)) {
Lin Ming55ac9a02008-09-28 14:51:56 +08001542 printk(KERN_ERR PREFIX
1543 "Error installing notify handler\n");
Yu, Luming973bf492006-04-27 05:25:00 -04001544 if(data->brightness)
1545 kfree(data->brightness->levels);
1546 kfree(data->brightness);
1547 kfree(data);
1548 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001549 }
1550
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -05001551 mutex_lock(&video->device_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001552 list_add_tail(&data->entry, &video->video_device_list);
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -05001553 mutex_unlock(&video->device_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001554
1555 acpi_video_device_add_fs(device);
1556
Patrick Mocheld550d982006-06-27 00:41:40 -04001557 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001558 }
1559
Patrick Mocheld550d982006-06-27 00:41:40 -04001560 return -ENOENT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001561}
1562
1563/*
1564 * Arg:
1565 * video : video bus device
1566 *
1567 * Return:
1568 * none
1569 *
1570 * Enumerate the video device list of the video bus,
1571 * bind the ids with the corresponding video devices
1572 * under the video bus.
Len Brown4be44fc2005-08-05 00:44:28 -04001573 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001574
Len Brown4be44fc2005-08-05 00:44:28 -04001575static void acpi_video_device_rebind(struct acpi_video_bus *video)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001576{
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001577 struct acpi_video_device *dev;
1578
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -05001579 mutex_lock(&video->device_list_lock);
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001580
1581 list_for_each_entry(dev, &video->video_device_list, entry)
Len Brown4be44fc2005-08-05 00:44:28 -04001582 acpi_video_device_bind(video, dev);
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001583
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -05001584 mutex_unlock(&video->device_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001585}
1586
1587/*
1588 * Arg:
1589 * video : video bus device
1590 * device : video output device under the video
1591 * bus
1592 *
1593 * Return:
1594 * none
1595 *
1596 * Bind the ids with the corresponding video devices
1597 * under the video bus.
Len Brown4be44fc2005-08-05 00:44:28 -04001598 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001599
1600static void
Len Brown4be44fc2005-08-05 00:44:28 -04001601acpi_video_device_bind(struct acpi_video_bus *video,
1602 struct acpi_video_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001603{
Dmitry Torokhov78eed022007-11-05 11:43:33 -05001604 struct acpi_video_enumerated_device *ids;
Len Brown4be44fc2005-08-05 00:44:28 -04001605 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001606
Dmitry Torokhov78eed022007-11-05 11:43:33 -05001607 for (i = 0; i < video->attached_count; i++) {
1608 ids = &video->attached_array[i];
1609 if (device->device_id == (ids->value.int_val & 0xffff)) {
1610 ids->bind_info = device;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001611 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i));
1612 }
1613 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001614}
1615
1616/*
1617 * Arg:
1618 * video : video bus device
1619 *
1620 * Return:
1621 * < 0 : error
1622 *
1623 * Call _DOD to enumerate all devices attached to display adapter
1624 *
Len Brown4be44fc2005-08-05 00:44:28 -04001625 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001626
1627static int acpi_video_device_enumerate(struct acpi_video_bus *video)
1628{
Len Brown4be44fc2005-08-05 00:44:28 -04001629 int status;
1630 int count;
1631 int i;
Dmitry Torokhov78eed022007-11-05 11:43:33 -05001632 struct acpi_video_enumerated_device *active_list;
Len Brown4be44fc2005-08-05 00:44:28 -04001633 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1634 union acpi_object *dod = NULL;
1635 union acpi_object *obj;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001636
Patrick Mochel90130262006-05-19 16:54:48 -04001637 status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001638 if (!ACPI_SUCCESS(status)) {
Thomas Renningera6fc6722006-06-26 23:58:43 -04001639 ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD"));
Patrick Mocheld550d982006-06-27 00:41:40 -04001640 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001641 }
1642
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001643 dod = buffer.pointer;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001644 if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) {
Thomas Renningera6fc6722006-06-26 23:58:43 -04001645 ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data"));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001646 status = -EFAULT;
1647 goto out;
1648 }
1649
1650 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n",
Len Brown4be44fc2005-08-05 00:44:28 -04001651 dod->package.count));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001652
Dmitry Torokhov78eed022007-11-05 11:43:33 -05001653 active_list = kcalloc(1 + dod->package.count,
1654 sizeof(struct acpi_video_enumerated_device),
1655 GFP_KERNEL);
1656 if (!active_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001657 status = -ENOMEM;
1658 goto out;
1659 }
1660
1661 count = 0;
1662 for (i = 0; i < dod->package.count; i++) {
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001663 obj = &dod->package.elements[i];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001664
1665 if (obj->type != ACPI_TYPE_INTEGER) {
Dmitry Torokhov78eed022007-11-05 11:43:33 -05001666 printk(KERN_ERR PREFIX
1667 "Invalid _DOD data in element %d\n", i);
1668 continue;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001669 }
Dmitry Torokhov78eed022007-11-05 11:43:33 -05001670
1671 active_list[count].value.int_val = obj->integer.value;
1672 active_list[count].bind_info = NULL;
Len Brown4be44fc2005-08-05 00:44:28 -04001673 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i,
1674 (int)obj->integer.value));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001675 count++;
1676 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001677
Jesper Juhl6044ec82005-11-07 01:01:32 -08001678 kfree(video->attached_array);
Len Brown4be44fc2005-08-05 00:44:28 -04001679
Dmitry Torokhov78eed022007-11-05 11:43:33 -05001680 video->attached_array = active_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001681 video->attached_count = count;
Dmitry Torokhov78eed022007-11-05 11:43:33 -05001682
1683 out:
Len Brown02438d82006-06-30 03:19:10 -04001684 kfree(buffer.pointer);
Patrick Mocheld550d982006-06-27 00:41:40 -04001685 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001686}
1687
Len Brown4be44fc2005-08-05 00:44:28 -04001688static int
1689acpi_video_get_next_level(struct acpi_video_device *device,
1690 u32 level_current, u32 event)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001691{
Alexey Starikovskiy63f0edf2007-09-03 16:30:08 +04001692 int min, max, min_above, max_below, i, l, delta = 255;
Thomas Tuttlef4715182006-12-19 12:56:14 -08001693 max = max_below = 0;
1694 min = min_above = 255;
Alexey Starikovskiy63f0edf2007-09-03 16:30:08 +04001695 /* Find closest level to level_current */
1696 for (i = 0; i < device->brightness->count; i++) {
1697 l = device->brightness->levels[i];
1698 if (abs(l - level_current) < abs(delta)) {
1699 delta = l - level_current;
1700 if (!delta)
1701 break;
1702 }
1703 }
1704 /* Ajust level_current to closest available level */
1705 level_current += delta;
Thomas Tuttlef4715182006-12-19 12:56:14 -08001706 for (i = 0; i < device->brightness->count; i++) {
1707 l = device->brightness->levels[i];
1708 if (l < min)
1709 min = l;
1710 if (l > max)
1711 max = l;
1712 if (l < min_above && l > level_current)
1713 min_above = l;
1714 if (l > max_below && l < level_current)
1715 max_below = l;
1716 }
1717
1718 switch (event) {
1719 case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS:
1720 return (level_current < max) ? min_above : min;
1721 case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS:
1722 return (level_current < max) ? min_above : max;
1723 case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS:
1724 return (level_current > min) ? max_below : min;
1725 case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS:
1726 case ACPI_VIDEO_NOTIFY_DISPLAY_OFF:
1727 return 0;
1728 default:
1729 return level_current;
1730 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001731}
1732
Linus Torvalds1da177e2005-04-16 15:20:36 -07001733static void
Len Brown4be44fc2005-08-05 00:44:28 -04001734acpi_video_switch_brightness(struct acpi_video_device *device, int event)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001735{
Matthew Wilcox27663c52008-10-10 02:22:59 -04001736 unsigned long long level_current, level_next;
Julia Jomantaite469778c2008-06-23 22:50:42 +01001737 if (!device->brightness)
1738 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001739 acpi_video_device_lcd_get_level_current(device, &level_current);
1740 level_next = acpi_video_get_next_level(device, level_current, event);
1741 acpi_video_device_lcd_set_level(device, level_next);
1742}
1743
1744static int
Len Brown4be44fc2005-08-05 00:44:28 -04001745acpi_video_bus_get_devices(struct acpi_video_bus *video,
1746 struct acpi_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001747{
Len Brown4be44fc2005-08-05 00:44:28 -04001748 int status = 0;
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001749 struct acpi_device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001750
1751 acpi_video_device_enumerate(video);
1752
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001753 list_for_each_entry(dev, &device->children, node) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001754
1755 status = acpi_video_bus_get_one_device(dev, video);
1756 if (ACPI_FAILURE(status)) {
Lin Ming55ac9a02008-09-28 14:51:56 +08001757 printk(KERN_WARNING PREFIX
1758 "Cant attach device");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001759 continue;
1760 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001761 }
Patrick Mocheld550d982006-06-27 00:41:40 -04001762 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001763}
1764
Len Brown4be44fc2005-08-05 00:44:28 -04001765static int acpi_video_bus_put_one_device(struct acpi_video_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001766{
Karol Kozimor031ec772005-07-30 04:18:00 -04001767 acpi_status status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001768 struct acpi_video_bus *video;
1769
Linus Torvalds1da177e2005-04-16 15:20:36 -07001770
1771 if (!device || !device->video)
Patrick Mocheld550d982006-06-27 00:41:40 -04001772 return -ENOENT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001773
1774 video = device->video;
1775
Linus Torvalds1da177e2005-04-16 15:20:36 -07001776 acpi_video_device_remove_fs(device->dev);
1777
Patrick Mochel90130262006-05-19 16:54:48 -04001778 status = acpi_remove_notify_handler(device->dev->handle,
Len Brown4be44fc2005-08-05 00:44:28 -04001779 ACPI_DEVICE_NOTIFY,
1780 acpi_video_device_notify);
Richard Purdie599a52d2007-02-10 23:07:48 +00001781 backlight_device_unregister(device->backlight);
Zhang Rui702ed512008-01-17 15:51:22 +08001782 if (device->cdev) {
1783 sysfs_remove_link(&device->dev->dev.kobj,
1784 "thermal_cooling");
1785 sysfs_remove_link(&device->cdev->device.kobj,
1786 "device");
1787 thermal_cooling_device_unregister(device->cdev);
1788 device->cdev = NULL;
1789 }
Luming Yu23b0f012007-05-09 21:07:05 +08001790 video_output_unregister(device->output_dev);
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001791
Patrick Mocheld550d982006-06-27 00:41:40 -04001792 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001793}
1794
Len Brown4be44fc2005-08-05 00:44:28 -04001795static int acpi_video_bus_put_devices(struct acpi_video_bus *video)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001796{
Len Brown4be44fc2005-08-05 00:44:28 -04001797 int status;
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001798 struct acpi_video_device *dev, *next;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001799
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -05001800 mutex_lock(&video->device_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001801
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001802 list_for_each_entry_safe(dev, next, &video->video_device_list, entry) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001803
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001804 status = acpi_video_bus_put_one_device(dev);
Len Brown4be44fc2005-08-05 00:44:28 -04001805 if (ACPI_FAILURE(status))
1806 printk(KERN_WARNING PREFIX
1807 "hhuuhhuu bug in acpi video driver.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001808
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001809 if (dev->brightness) {
1810 kfree(dev->brightness->levels);
1811 kfree(dev->brightness);
1812 }
1813 list_del(&dev->entry);
1814 kfree(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001815 }
1816
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -05001817 mutex_unlock(&video->device_list_lock);
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001818
Patrick Mocheld550d982006-06-27 00:41:40 -04001819 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001820}
1821
1822/* acpi_video interface */
1823
Len Brown4be44fc2005-08-05 00:44:28 -04001824static int acpi_video_bus_start_devices(struct acpi_video_bus *video)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001825{
Zhang Ruia21101c2007-09-14 11:46:22 +08001826 return acpi_video_bus_DOS(video, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001827}
1828
Len Brown4be44fc2005-08-05 00:44:28 -04001829static int acpi_video_bus_stop_devices(struct acpi_video_bus *video)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001830{
1831 return acpi_video_bus_DOS(video, 0, 1);
1832}
1833
Len Brown4be44fc2005-08-05 00:44:28 -04001834static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001835{
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001836 struct acpi_video_bus *video = data;
Len Brown4be44fc2005-08-05 00:44:28 -04001837 struct acpi_device *device = NULL;
Luming Yue9dab192007-08-20 18:23:53 +08001838 struct input_dev *input;
1839 int keycode;
1840
Linus Torvalds1da177e2005-04-16 15:20:36 -07001841 if (!video)
Patrick Mocheld550d982006-06-27 00:41:40 -04001842 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001843
Patrick Mochele6afa0d2006-05-19 16:54:40 -04001844 device = video->device;
Luming Yue9dab192007-08-20 18:23:53 +08001845 input = video->input;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001846
1847 switch (event) {
Julius Volz98fb8fe2007-02-20 16:38:40 +01001848 case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001849 * most likely via hotkey. */
Len Brown14e04fb2007-08-23 15:20:26 -04001850 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001851 keycode = KEY_SWITCHVIDEOMODE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001852 break;
1853
Julius Volz98fb8fe2007-02-20 16:38:40 +01001854 case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video
Linus Torvalds1da177e2005-04-16 15:20:36 -07001855 * connector. */
1856 acpi_video_device_enumerate(video);
1857 acpi_video_device_rebind(video);
Len Brown14e04fb2007-08-23 15:20:26 -04001858 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001859 keycode = KEY_SWITCHVIDEOMODE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001860 break;
1861
Len Brown4be44fc2005-08-05 00:44:28 -04001862 case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */
Len Brown25c87f72007-08-25 01:44:01 -04001863 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001864 keycode = KEY_SWITCHVIDEOMODE;
1865 break;
Len Brown4be44fc2005-08-05 00:44:28 -04001866 case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */
Len Brown25c87f72007-08-25 01:44:01 -04001867 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001868 keycode = KEY_VIDEO_NEXT;
1869 break;
Len Brown4be44fc2005-08-05 00:44:28 -04001870 case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */
Len Brown14e04fb2007-08-23 15:20:26 -04001871 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001872 keycode = KEY_VIDEO_PREV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001873 break;
1874
1875 default:
Luming Yue9dab192007-08-20 18:23:53 +08001876 keycode = KEY_UNKNOWN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001877 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
Len Brown4be44fc2005-08-05 00:44:28 -04001878 "Unsupported event [0x%x]\n", event));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001879 break;
1880 }
1881
Zhang Rui7761f632008-01-25 14:48:12 +08001882 acpi_notifier_call_chain(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001883 input_report_key(input, keycode, 1);
1884 input_sync(input);
1885 input_report_key(input, keycode, 0);
1886 input_sync(input);
1887
Patrick Mocheld550d982006-06-27 00:41:40 -04001888 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001889}
1890
Len Brown4be44fc2005-08-05 00:44:28 -04001891static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001892{
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001893 struct acpi_video_device *video_device = data;
Len Brown4be44fc2005-08-05 00:44:28 -04001894 struct acpi_device *device = NULL;
Luming Yue9dab192007-08-20 18:23:53 +08001895 struct acpi_video_bus *bus;
1896 struct input_dev *input;
1897 int keycode;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001898
Linus Torvalds1da177e2005-04-16 15:20:36 -07001899 if (!video_device)
Patrick Mocheld550d982006-06-27 00:41:40 -04001900 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001901
Patrick Mochele6afa0d2006-05-19 16:54:40 -04001902 device = video_device->dev;
Luming Yue9dab192007-08-20 18:23:53 +08001903 bus = video_device->video;
1904 input = bus->input;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001905
1906 switch (event) {
Len Brown4be44fc2005-08-05 00:44:28 -04001907 case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */
Zhang Rui8a681a42008-01-25 14:47:49 +08001908 if (brightness_switch_enabled)
1909 acpi_video_switch_brightness(video_device, event);
Len Brown25c87f72007-08-25 01:44:01 -04001910 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001911 keycode = KEY_BRIGHTNESS_CYCLE;
1912 break;
Len Brown4be44fc2005-08-05 00:44:28 -04001913 case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */
Zhang Rui8a681a42008-01-25 14:47:49 +08001914 if (brightness_switch_enabled)
1915 acpi_video_switch_brightness(video_device, event);
Len Brown25c87f72007-08-25 01:44:01 -04001916 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001917 keycode = KEY_BRIGHTNESSUP;
1918 break;
Len Brown4be44fc2005-08-05 00:44:28 -04001919 case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */
Zhang Rui8a681a42008-01-25 14:47:49 +08001920 if (brightness_switch_enabled)
1921 acpi_video_switch_brightness(video_device, event);
Len Brown25c87f72007-08-25 01:44:01 -04001922 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001923 keycode = KEY_BRIGHTNESSDOWN;
1924 break;
Len Brown4be44fc2005-08-05 00:44:28 -04001925 case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */
Zhang Rui8a681a42008-01-25 14:47:49 +08001926 if (brightness_switch_enabled)
1927 acpi_video_switch_brightness(video_device, event);
Len Brown25c87f72007-08-25 01:44:01 -04001928 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001929 keycode = KEY_BRIGHTNESS_ZERO;
1930 break;
Len Brown4be44fc2005-08-05 00:44:28 -04001931 case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */
Zhang Rui8a681a42008-01-25 14:47:49 +08001932 if (brightness_switch_enabled)
1933 acpi_video_switch_brightness(video_device, event);
Len Brown14e04fb2007-08-23 15:20:26 -04001934 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001935 keycode = KEY_DISPLAY_OFF;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001936 break;
1937 default:
Luming Yue9dab192007-08-20 18:23:53 +08001938 keycode = KEY_UNKNOWN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001939 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
Len Brown4be44fc2005-08-05 00:44:28 -04001940 "Unsupported event [0x%x]\n", event));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001941 break;
1942 }
Luming Yue9dab192007-08-20 18:23:53 +08001943
Zhang Rui7761f632008-01-25 14:48:12 +08001944 acpi_notifier_call_chain(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001945 input_report_key(input, keycode, 1);
1946 input_sync(input);
1947 input_report_key(input, keycode, 0);
1948 input_sync(input);
1949
Patrick Mocheld550d982006-06-27 00:41:40 -04001950 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001951}
1952
Zhang Ruie6d9da12007-08-25 02:23:31 -04001953static int instance;
Matthew Garrett863c1492008-02-04 23:31:24 -08001954static int acpi_video_resume(struct acpi_device *device)
1955{
1956 struct acpi_video_bus *video;
1957 struct acpi_video_device *video_device;
1958 int i;
1959
1960 if (!device || !acpi_driver_data(device))
1961 return -EINVAL;
1962
1963 video = acpi_driver_data(device);
1964
1965 for (i = 0; i < video->attached_count; i++) {
1966 video_device = video->attached_array[i].bind_info;
1967 if (video_device && video_device->backlight)
1968 acpi_video_set_brightness(video_device->backlight);
1969 }
1970 return AE_OK;
1971}
1972
Len Brown4be44fc2005-08-05 00:44:28 -04001973static int acpi_video_bus_add(struct acpi_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001974{
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05001975 acpi_status status;
1976 struct acpi_video_bus *video;
Luming Yue9dab192007-08-20 18:23:53 +08001977 struct input_dev *input;
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05001978 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001979
Burman Yan36bcbec2006-12-19 12:56:11 -08001980 video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001981 if (!video)
Patrick Mocheld550d982006-06-27 00:41:40 -04001982 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001983
Zhang Ruie6d9da12007-08-25 02:23:31 -04001984 /* a hack to fix the duplicate name "VID" problem on T61 */
1985 if (!strcmp(device->pnp.bus_id, "VID")) {
1986 if (instance)
1987 device->pnp.bus_id[3] = '0' + instance;
1988 instance ++;
1989 }
1990
Patrick Mochele6afa0d2006-05-19 16:54:40 -04001991 video->device = device;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001992 strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME);
1993 strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS);
Pavel Machekdb89b4f2008-09-22 14:37:34 -07001994 device->driver_data = video;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001995
1996 acpi_video_bus_find_cap(video);
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05001997 error = acpi_video_bus_check(video);
1998 if (error)
1999 goto err_free_video;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002000
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05002001 error = acpi_video_bus_add_fs(device);
2002 if (error)
2003 goto err_free_video;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002004
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -05002005 mutex_init(&video->device_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002006 INIT_LIST_HEAD(&video->video_device_list);
2007
2008 acpi_video_bus_get_devices(video, device);
2009 acpi_video_bus_start_devices(video);
2010
Patrick Mochel90130262006-05-19 16:54:48 -04002011 status = acpi_install_notify_handler(device->handle,
Len Brown4be44fc2005-08-05 00:44:28 -04002012 ACPI_DEVICE_NOTIFY,
2013 acpi_video_bus_notify, video);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002014 if (ACPI_FAILURE(status)) {
Lin Ming55ac9a02008-09-28 14:51:56 +08002015 printk(KERN_ERR PREFIX
2016 "Error installing notify handler\n");
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05002017 error = -ENODEV;
2018 goto err_stop_video;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002019 }
2020
Luming Yue9dab192007-08-20 18:23:53 +08002021 video->input = input = input_allocate_device();
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05002022 if (!input) {
2023 error = -ENOMEM;
2024 goto err_uninstall_notify;
2025 }
Luming Yue9dab192007-08-20 18:23:53 +08002026
2027 snprintf(video->phys, sizeof(video->phys),
2028 "%s/video/input0", acpi_device_hid(video->device));
2029
2030 input->name = acpi_device_name(video->device);
2031 input->phys = video->phys;
2032 input->id.bustype = BUS_HOST;
2033 input->id.product = 0x06;
Dmitry Torokhov91c05c62007-11-05 11:43:29 -05002034 input->dev.parent = &device->dev;
Luming Yue9dab192007-08-20 18:23:53 +08002035 input->evbit[0] = BIT(EV_KEY);
2036 set_bit(KEY_SWITCHVIDEOMODE, input->keybit);
2037 set_bit(KEY_VIDEO_NEXT, input->keybit);
2038 set_bit(KEY_VIDEO_PREV, input->keybit);
2039 set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit);
2040 set_bit(KEY_BRIGHTNESSUP, input->keybit);
2041 set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
2042 set_bit(KEY_BRIGHTNESS_ZERO, input->keybit);
2043 set_bit(KEY_DISPLAY_OFF, input->keybit);
2044 set_bit(KEY_UNKNOWN, input->keybit);
Luming Yue9dab192007-08-20 18:23:53 +08002045
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05002046 error = input_register_device(input);
2047 if (error)
2048 goto err_free_input_dev;
Luming Yue9dab192007-08-20 18:23:53 +08002049
Linus Torvalds1da177e2005-04-16 15:20:36 -07002050 printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n",
Len Brown4be44fc2005-08-05 00:44:28 -04002051 ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device),
2052 video->flags.multihead ? "yes" : "no",
2053 video->flags.rom ? "yes" : "no",
2054 video->flags.post ? "yes" : "no");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002055
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05002056 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002057
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05002058 err_free_input_dev:
2059 input_free_device(input);
2060 err_uninstall_notify:
2061 acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
2062 acpi_video_bus_notify);
2063 err_stop_video:
2064 acpi_video_bus_stop_devices(video);
2065 acpi_video_bus_put_devices(video);
2066 kfree(video->attached_array);
2067 acpi_video_bus_remove_fs(device);
2068 err_free_video:
2069 kfree(video);
Pavel Machekdb89b4f2008-09-22 14:37:34 -07002070 device->driver_data = NULL;
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05002071
2072 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002073}
2074
Len Brown4be44fc2005-08-05 00:44:28 -04002075static int acpi_video_bus_remove(struct acpi_device *device, int type)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002076{
Len Brown4be44fc2005-08-05 00:44:28 -04002077 acpi_status status = 0;
2078 struct acpi_video_bus *video = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002079
Linus Torvalds1da177e2005-04-16 15:20:36 -07002080
2081 if (!device || !acpi_driver_data(device))
Patrick Mocheld550d982006-06-27 00:41:40 -04002082 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002083
Jan Engelhardt50dd0962006-10-01 00:28:50 +02002084 video = acpi_driver_data(device);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002085
2086 acpi_video_bus_stop_devices(video);
2087
Patrick Mochel90130262006-05-19 16:54:48 -04002088 status = acpi_remove_notify_handler(video->device->handle,
Len Brown4be44fc2005-08-05 00:44:28 -04002089 ACPI_DEVICE_NOTIFY,
2090 acpi_video_bus_notify);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002091
2092 acpi_video_bus_put_devices(video);
2093 acpi_video_bus_remove_fs(device);
2094
Luming Yue9dab192007-08-20 18:23:53 +08002095 input_unregister_device(video->input);
Jesper Juhl6044ec82005-11-07 01:01:32 -08002096 kfree(video->attached_array);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002097 kfree(video);
2098
Patrick Mocheld550d982006-06-27 00:41:40 -04002099 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002100}
2101
Len Brown4be44fc2005-08-05 00:44:28 -04002102static int __init acpi_video_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002103{
Len Brown4be44fc2005-08-05 00:44:28 -04002104 int result = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002105
Linus Torvalds1da177e2005-04-16 15:20:36 -07002106
2107 /*
Len Brown4be44fc2005-08-05 00:44:28 -04002108 acpi_dbg_level = 0xFFFFFFFF;
2109 acpi_dbg_layer = 0x08000000;
2110 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002111
2112 acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir);
2113 if (!acpi_video_dir)
Patrick Mocheld550d982006-06-27 00:41:40 -04002114 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002115 acpi_video_dir->owner = THIS_MODULE;
2116
2117 result = acpi_bus_register_driver(&acpi_video_bus);
2118 if (result < 0) {
2119 remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir);
Patrick Mocheld550d982006-06-27 00:41:40 -04002120 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002121 }
2122
Patrick Mocheld550d982006-06-27 00:41:40 -04002123 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002124}
2125
Len Brown4be44fc2005-08-05 00:44:28 -04002126static void __exit acpi_video_exit(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002127{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002128
2129 acpi_bus_unregister_driver(&acpi_video_bus);
2130
2131 remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir);
2132
Patrick Mocheld550d982006-06-27 00:41:40 -04002133 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002134}
2135
2136module_init(acpi_video_init);
2137module_exit(acpi_video_exit);