blob: 44a0d9ba9bd67268747d4ef9d6355981d0120f09 [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>
Luming Yu23b0f012007-05-09 21:07:05 +080037#include <linux/video_output.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070038#include <asm/uaccess.h>
39
40#include <acpi/acpi_bus.h>
41#include <acpi/acpi_drivers.h>
42
43#define ACPI_VIDEO_COMPONENT 0x08000000
44#define ACPI_VIDEO_CLASS "video"
Linus Torvalds1da177e2005-04-16 15:20:36 -070045#define ACPI_VIDEO_BUS_NAME "Video Bus"
46#define ACPI_VIDEO_DEVICE_NAME "Video Device"
47#define ACPI_VIDEO_NOTIFY_SWITCH 0x80
48#define ACPI_VIDEO_NOTIFY_PROBE 0x81
49#define ACPI_VIDEO_NOTIFY_CYCLE 0x82
50#define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83
51#define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84
52
Thomas Tuttlef4715182006-12-19 12:56:14 -080053#define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x85
54#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86
55#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87
56#define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x88
57#define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x89
Linus Torvalds1da177e2005-04-16 15:20:36 -070058
Linus Torvalds1da177e2005-04-16 15:20:36 -070059#define ACPI_VIDEO_HEAD_INVALID (~0u - 1)
60#define ACPI_VIDEO_HEAD_END (~0u)
Yu Luming2f3d0002006-11-11 02:40:34 +080061#define MAX_NAME_LEN 20
Linus Torvalds1da177e2005-04-16 15:20:36 -070062
Rui Zhang82cae992007-01-03 23:40:53 -050063#define ACPI_VIDEO_DISPLAY_CRT 1
64#define ACPI_VIDEO_DISPLAY_TV 2
65#define ACPI_VIDEO_DISPLAY_DVI 3
66#define ACPI_VIDEO_DISPLAY_LCD 4
67
Linus Torvalds1da177e2005-04-16 15:20:36 -070068#define _COMPONENT ACPI_VIDEO_COMPONENT
Len Brownf52fd662007-02-12 22:42:12 -050069ACPI_MODULE_NAME("video");
Linus Torvalds1da177e2005-04-16 15:20:36 -070070
Len Brownf52fd662007-02-12 22:42:12 -050071MODULE_AUTHOR("Bruno Ducrot");
Len Brown7cda93e2007-02-12 23:50:02 -050072MODULE_DESCRIPTION("ACPI Video Driver");
Linus Torvalds1da177e2005-04-16 15:20:36 -070073MODULE_LICENSE("GPL");
74
Len Brown4be44fc2005-08-05 00:44:28 -040075static int acpi_video_bus_add(struct acpi_device *device);
76static int acpi_video_bus_remove(struct acpi_device *device, int type);
Linus Torvalds1da177e2005-04-16 15:20:36 -070077
Thomas Renninger1ba90e32007-07-23 14:44:41 +020078static const struct acpi_device_id video_device_ids[] = {
79 {ACPI_VIDEO_HID, 0},
80 {"", 0},
81};
82MODULE_DEVICE_TABLE(acpi, video_device_ids);
83
Linus Torvalds1da177e2005-04-16 15:20:36 -070084static struct acpi_driver acpi_video_bus = {
Len Brownc2b67052007-02-12 23:33:40 -050085 .name = "video",
Linus Torvalds1da177e2005-04-16 15:20:36 -070086 .class = ACPI_VIDEO_CLASS,
Thomas Renninger1ba90e32007-07-23 14:44:41 +020087 .ids = video_device_ids,
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 .ops = {
89 .add = acpi_video_bus_add,
90 .remove = acpi_video_bus_remove,
Len Brown4be44fc2005-08-05 00:44:28 -040091 },
Linus Torvalds1da177e2005-04-16 15:20:36 -070092};
93
94struct acpi_video_bus_flags {
Len Brown4be44fc2005-08-05 00:44:28 -040095 u8 multihead:1; /* can switch video heads */
96 u8 rom:1; /* can retrieve a video rom */
97 u8 post:1; /* can configure the head to */
98 u8 reserved:5;
Linus Torvalds1da177e2005-04-16 15:20:36 -070099};
100
101struct acpi_video_bus_cap {
Len Brown4be44fc2005-08-05 00:44:28 -0400102 u8 _DOS:1; /*Enable/Disable output switching */
103 u8 _DOD:1; /*Enumerate all devices attached to display adapter */
104 u8 _ROM:1; /*Get ROM Data */
105 u8 _GPD:1; /*Get POST Device */
106 u8 _SPD:1; /*Set POST Device */
107 u8 _VPO:1; /*Video POST Options */
108 u8 reserved:2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109};
110
Len Brown4be44fc2005-08-05 00:44:28 -0400111struct acpi_video_device_attrib {
112 u32 display_index:4; /* A zero-based instance of the Display */
Julius Volz98fb8fe2007-02-20 16:38:40 +0100113 u32 display_port_attachment:4; /*This field differentiates the display type */
Len Brown4be44fc2005-08-05 00:44:28 -0400114 u32 display_type:4; /*Describe the specific type in use */
Julius Volz98fb8fe2007-02-20 16:38:40 +0100115 u32 vendor_specific:4; /*Chipset Vendor Specific */
Len Brown4be44fc2005-08-05 00:44:28 -0400116 u32 bios_can_detect:1; /*BIOS can detect the device */
117 u32 depend_on_vga:1; /*Non-VGA output device whose power is related to
118 the VGA device. */
119 u32 pipe_id:3; /*For VGA multiple-head devices. */
120 u32 reserved:10; /*Must be 0 */
121 u32 device_id_scheme:1; /*Device ID Scheme */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122};
123
124struct acpi_video_enumerated_device {
125 union {
126 u32 int_val;
Len Brown4be44fc2005-08-05 00:44:28 -0400127 struct acpi_video_device_attrib attrib;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128 } value;
129 struct acpi_video_device *bind_info;
130};
131
132struct acpi_video_bus {
Patrick Mochele6afa0d2006-05-19 16:54:40 -0400133 struct acpi_device *device;
Len Brown4be44fc2005-08-05 00:44:28 -0400134 u8 dos_setting;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135 struct acpi_video_enumerated_device *attached_array;
Len Brown4be44fc2005-08-05 00:44:28 -0400136 u8 attached_count;
137 struct acpi_video_bus_cap cap;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138 struct acpi_video_bus_flags flags;
Len Brown4be44fc2005-08-05 00:44:28 -0400139 struct list_head video_device_list;
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -0500140 struct mutex device_list_lock; /* protects video_device_list */
Len Brown4be44fc2005-08-05 00:44:28 -0400141 struct proc_dir_entry *dir;
Luming Yue9dab192007-08-20 18:23:53 +0800142 struct input_dev *input;
143 char phys[32]; /* for input device */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144};
145
146struct acpi_video_device_flags {
Len Brown4be44fc2005-08-05 00:44:28 -0400147 u8 crt:1;
148 u8 lcd:1;
149 u8 tvout:1;
Rui Zhang82cae992007-01-03 23:40:53 -0500150 u8 dvi:1;
Len Brown4be44fc2005-08-05 00:44:28 -0400151 u8 bios:1;
152 u8 unknown:1;
Rui Zhang82cae992007-01-03 23:40:53 -0500153 u8 reserved:2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154};
155
156struct acpi_video_device_cap {
Len Brown4be44fc2005-08-05 00:44:28 -0400157 u8 _ADR:1; /*Return the unique ID */
158 u8 _BCL:1; /*Query list of brightness control levels supported */
159 u8 _BCM:1; /*Set the brightness level */
Yu Luming2f3d0002006-11-11 02:40:34 +0800160 u8 _BQC:1; /* Get current brightness level */
Len Brown4be44fc2005-08-05 00:44:28 -0400161 u8 _DDC:1; /*Return the EDID for this device */
162 u8 _DCS:1; /*Return status of output device */
163 u8 _DGS:1; /*Query graphics state */
164 u8 _DSS:1; /*Device state set */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165};
166
167struct acpi_video_device_brightness {
Len Brown4be44fc2005-08-05 00:44:28 -0400168 int curr;
169 int count;
170 int *levels;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171};
172
173struct acpi_video_device {
Len Brown4be44fc2005-08-05 00:44:28 -0400174 unsigned long device_id;
175 struct acpi_video_device_flags flags;
176 struct acpi_video_device_cap cap;
177 struct list_head entry;
178 struct acpi_video_bus *video;
179 struct acpi_device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 struct acpi_video_device_brightness *brightness;
Yu Luming2f3d0002006-11-11 02:40:34 +0800181 struct backlight_device *backlight;
Luming Yu23b0f012007-05-09 21:07:05 +0800182 struct output_device *output_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183};
184
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185/* bus */
186static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file);
187static struct file_operations acpi_video_bus_info_fops = {
Len Brown4be44fc2005-08-05 00:44:28 -0400188 .open = acpi_video_bus_info_open_fs,
189 .read = seq_read,
190 .llseek = seq_lseek,
191 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192};
193
194static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file);
195static struct file_operations acpi_video_bus_ROM_fops = {
Len Brown4be44fc2005-08-05 00:44:28 -0400196 .open = acpi_video_bus_ROM_open_fs,
197 .read = seq_read,
198 .llseek = seq_lseek,
199 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200};
201
Len Brown4be44fc2005-08-05 00:44:28 -0400202static int acpi_video_bus_POST_info_open_fs(struct inode *inode,
203 struct file *file);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204static struct file_operations acpi_video_bus_POST_info_fops = {
Len Brown4be44fc2005-08-05 00:44:28 -0400205 .open = acpi_video_bus_POST_info_open_fs,
206 .read = seq_read,
207 .llseek = seq_lseek,
208 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209};
210
211static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file);
212static struct file_operations acpi_video_bus_POST_fops = {
Len Brown4be44fc2005-08-05 00:44:28 -0400213 .open = acpi_video_bus_POST_open_fs,
214 .read = seq_read,
215 .llseek = seq_lseek,
216 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217};
218
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file);
220static struct file_operations acpi_video_bus_DOS_fops = {
Len Brown4be44fc2005-08-05 00:44:28 -0400221 .open = acpi_video_bus_DOS_open_fs,
222 .read = seq_read,
223 .llseek = seq_lseek,
224 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225};
226
227/* device */
Len Brown4be44fc2005-08-05 00:44:28 -0400228static int acpi_video_device_info_open_fs(struct inode *inode,
229 struct file *file);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230static struct file_operations acpi_video_device_info_fops = {
Len Brown4be44fc2005-08-05 00:44:28 -0400231 .open = acpi_video_device_info_open_fs,
232 .read = seq_read,
233 .llseek = seq_lseek,
234 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235};
236
Len Brown4be44fc2005-08-05 00:44:28 -0400237static int acpi_video_device_state_open_fs(struct inode *inode,
238 struct file *file);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239static struct file_operations acpi_video_device_state_fops = {
Len Brown4be44fc2005-08-05 00:44:28 -0400240 .open = acpi_video_device_state_open_fs,
241 .read = seq_read,
242 .llseek = seq_lseek,
243 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244};
245
Len Brown4be44fc2005-08-05 00:44:28 -0400246static int acpi_video_device_brightness_open_fs(struct inode *inode,
247 struct file *file);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248static struct file_operations acpi_video_device_brightness_fops = {
Len Brown4be44fc2005-08-05 00:44:28 -0400249 .open = acpi_video_device_brightness_open_fs,
250 .read = seq_read,
251 .llseek = seq_lseek,
252 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253};
254
Len Brown4be44fc2005-08-05 00:44:28 -0400255static int acpi_video_device_EDID_open_fs(struct inode *inode,
256 struct file *file);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257static struct file_operations acpi_video_device_EDID_fops = {
Len Brown4be44fc2005-08-05 00:44:28 -0400258 .open = acpi_video_device_EDID_open_fs,
259 .read = seq_read,
260 .llseek = seq_lseek,
261 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262};
263
Len Brown4be44fc2005-08-05 00:44:28 -0400264static char device_decode[][30] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265 "motherboard VGA device",
266 "PCI VGA device",
267 "AGP VGA device",
268 "UNKNOWN",
269};
270
Len Brown4be44fc2005-08-05 00:44:28 -0400271static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data);
272static void acpi_video_device_rebind(struct acpi_video_bus *video);
273static void acpi_video_device_bind(struct acpi_video_bus *video,
274 struct acpi_video_device *device);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275static int acpi_video_device_enumerate(struct acpi_video_bus *video);
Len Brown4be44fc2005-08-05 00:44:28 -0400276static int acpi_video_switch_output(struct acpi_video_bus *video, int event);
Yu Luming2f3d0002006-11-11 02:40:34 +0800277static int acpi_video_device_lcd_set_level(struct acpi_video_device *device,
278 int level);
279static int acpi_video_device_lcd_get_level_current(
280 struct acpi_video_device *device,
281 unsigned long *level);
Len Brown4be44fc2005-08-05 00:44:28 -0400282static int acpi_video_get_next_level(struct acpi_video_device *device,
283 u32 level_current, u32 event);
284static void acpi_video_switch_brightness(struct acpi_video_device *device,
285 int event);
Luming Yu23b0f012007-05-09 21:07:05 +0800286static int acpi_video_device_get_state(struct acpi_video_device *device,
287 unsigned long *state);
288static int acpi_video_output_get(struct output_device *od);
289static int acpi_video_device_set_state(struct acpi_video_device *device, int state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290
Yu Luming2f3d0002006-11-11 02:40:34 +0800291/*backlight device sysfs support*/
292static int acpi_video_get_brightness(struct backlight_device *bd)
293{
294 unsigned long cur_level;
295 struct acpi_video_device *vd =
Richard Purdie655bfd72007-07-09 12:17:24 +0100296 (struct acpi_video_device *)bl_get_data(bd);
Yu Luming2f3d0002006-11-11 02:40:34 +0800297 acpi_video_device_lcd_get_level_current(vd, &cur_level);
298 return (int) cur_level;
299}
300
301static int acpi_video_set_brightness(struct backlight_device *bd)
302{
Richard Purdie599a52d2007-02-10 23:07:48 +0000303 int request_level = bd->props.brightness;
Yu Luming2f3d0002006-11-11 02:40:34 +0800304 struct acpi_video_device *vd =
Richard Purdie655bfd72007-07-09 12:17:24 +0100305 (struct acpi_video_device *)bl_get_data(bd);
Yu Luming2f3d0002006-11-11 02:40:34 +0800306 acpi_video_device_lcd_set_level(vd, request_level);
307 return 0;
308}
309
Richard Purdie599a52d2007-02-10 23:07:48 +0000310static struct backlight_ops acpi_backlight_ops = {
311 .get_brightness = acpi_video_get_brightness,
312 .update_status = acpi_video_set_brightness,
313};
314
Luming Yu23b0f012007-05-09 21:07:05 +0800315/*video output device sysfs support*/
316static int acpi_video_output_get(struct output_device *od)
317{
318 unsigned long state;
319 struct acpi_video_device *vd =
tonyj@suse.de60043422007-08-07 22:28:47 -0700320 (struct acpi_video_device *)dev_get_drvdata(&od->dev);
Luming Yu23b0f012007-05-09 21:07:05 +0800321 acpi_video_device_get_state(vd, &state);
322 return (int)state;
323}
324
325static int acpi_video_output_set(struct output_device *od)
326{
327 unsigned long state = od->request_state;
328 struct acpi_video_device *vd=
tonyj@suse.de60043422007-08-07 22:28:47 -0700329 (struct acpi_video_device *)dev_get_drvdata(&od->dev);
Luming Yu23b0f012007-05-09 21:07:05 +0800330 return acpi_video_device_set_state(vd, state);
331}
332
333static struct output_properties acpi_output_properties = {
334 .set_state = acpi_video_output_set,
335 .get_status = acpi_video_output_get,
336};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337/* --------------------------------------------------------------------------
338 Video Management
339 -------------------------------------------------------------------------- */
340
341/* device */
342
343static int
Len Brown4be44fc2005-08-05 00:44:28 -0400344acpi_video_device_query(struct acpi_video_device *device, unsigned long *state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345{
Len Brown4be44fc2005-08-05 00:44:28 -0400346 int status;
Patrick Mochel90130262006-05-19 16:54:48 -0400347
348 status = acpi_evaluate_integer(device->dev->handle, "_DGS", NULL, state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349
Patrick Mocheld550d982006-06-27 00:41:40 -0400350 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351}
352
353static int
Len Brown4be44fc2005-08-05 00:44:28 -0400354acpi_video_device_get_state(struct acpi_video_device *device,
355 unsigned long *state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356{
Len Brown4be44fc2005-08-05 00:44:28 -0400357 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358
Patrick Mochel90130262006-05-19 16:54:48 -0400359 status = acpi_evaluate_integer(device->dev->handle, "_DCS", NULL, state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360
Patrick Mocheld550d982006-06-27 00:41:40 -0400361 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362}
363
364static int
Len Brown4be44fc2005-08-05 00:44:28 -0400365acpi_video_device_set_state(struct acpi_video_device *device, int state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366{
Len Brown4be44fc2005-08-05 00:44:28 -0400367 int status;
368 union acpi_object arg0 = { ACPI_TYPE_INTEGER };
369 struct acpi_object_list args = { 1, &arg0 };
Luming Yu824b5582005-08-21 19:17:00 -0400370 unsigned long ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372
373 arg0.integer.value = state;
Patrick Mochel90130262006-05-19 16:54:48 -0400374 status = acpi_evaluate_integer(device->dev->handle, "_DSS", &args, &ret);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375
Patrick Mocheld550d982006-06-27 00:41:40 -0400376 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377}
378
379static int
Len Brown4be44fc2005-08-05 00:44:28 -0400380acpi_video_device_lcd_query_levels(struct acpi_video_device *device,
381 union acpi_object **levels)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382{
Len Brown4be44fc2005-08-05 00:44:28 -0400383 int status;
384 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
385 union acpi_object *obj;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387
388 *levels = NULL;
389
Patrick Mochel90130262006-05-19 16:54:48 -0400390 status = acpi_evaluate_object(device->dev->handle, "_BCL", NULL, &buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391 if (!ACPI_SUCCESS(status))
Patrick Mocheld550d982006-06-27 00:41:40 -0400392 return status;
Len Brown4be44fc2005-08-05 00:44:28 -0400393 obj = (union acpi_object *)buffer.pointer;
Adrian Bunk6665bda2006-03-11 10:12:00 -0500394 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
Len Brown64684632006-06-26 23:41:38 -0400395 printk(KERN_ERR PREFIX "Invalid _BCL data\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 status = -EFAULT;
397 goto err;
398 }
399
400 *levels = obj;
401
Patrick Mocheld550d982006-06-27 00:41:40 -0400402 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403
Len Brown4be44fc2005-08-05 00:44:28 -0400404 err:
Jesper Juhl6044ec82005-11-07 01:01:32 -0800405 kfree(buffer.pointer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406
Patrick Mocheld550d982006-06-27 00:41:40 -0400407 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408}
409
410static int
Len Brown4be44fc2005-08-05 00:44:28 -0400411acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412{
Alexey Starikovskiy4500ca82007-09-03 16:29:58 +0400413 int status = AE_OK;
Len Brown4be44fc2005-08-05 00:44:28 -0400414 union acpi_object arg0 = { ACPI_TYPE_INTEGER };
415 struct acpi_object_list args = { 1, &arg0 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417
418 arg0.integer.value = level;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419
Alexey Starikovskiy4500ca82007-09-03 16:29:58 +0400420 if (device->cap._BCM)
421 status = acpi_evaluate_object(device->dev->handle, "_BCM",
422 &args, NULL);
423 device->brightness->curr = level;
Patrick Mocheld550d982006-06-27 00:41:40 -0400424 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425}
426
427static int
Len Brown4be44fc2005-08-05 00:44:28 -0400428acpi_video_device_lcd_get_level_current(struct acpi_video_device *device,
429 unsigned long *level)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430{
Alexey Starikovskiy4500ca82007-09-03 16:29:58 +0400431 if (device->cap._BQC)
432 return acpi_evaluate_integer(device->dev->handle, "_BQC", NULL,
433 level);
434 *level = device->brightness->curr;
435 return AE_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436}
437
438static int
Len Brown4be44fc2005-08-05 00:44:28 -0400439acpi_video_device_EDID(struct acpi_video_device *device,
440 union acpi_object **edid, ssize_t length)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441{
Len Brown4be44fc2005-08-05 00:44:28 -0400442 int status;
443 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
444 union acpi_object *obj;
445 union acpi_object arg0 = { ACPI_TYPE_INTEGER };
446 struct acpi_object_list args = { 1, &arg0 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448
449 *edid = NULL;
450
451 if (!device)
Patrick Mocheld550d982006-06-27 00:41:40 -0400452 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 if (length == 128)
454 arg0.integer.value = 1;
455 else if (length == 256)
456 arg0.integer.value = 2;
457 else
Patrick Mocheld550d982006-06-27 00:41:40 -0400458 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459
Patrick Mochel90130262006-05-19 16:54:48 -0400460 status = acpi_evaluate_object(device->dev->handle, "_DDC", &args, &buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461 if (ACPI_FAILURE(status))
Patrick Mocheld550d982006-06-27 00:41:40 -0400462 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200464 obj = buffer.pointer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465
466 if (obj && obj->type == ACPI_TYPE_BUFFER)
467 *edid = obj;
468 else {
Len Brown64684632006-06-26 23:41:38 -0400469 printk(KERN_ERR PREFIX "Invalid _DDC data\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470 status = -EFAULT;
471 kfree(obj);
472 }
473
Patrick Mocheld550d982006-06-27 00:41:40 -0400474 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475}
476
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477/* bus */
478
479static int
Len Brown4be44fc2005-08-05 00:44:28 -0400480acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481{
Len Brown4be44fc2005-08-05 00:44:28 -0400482 int status;
483 unsigned long tmp;
484 union acpi_object arg0 = { ACPI_TYPE_INTEGER };
485 struct acpi_object_list args = { 1, &arg0 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487
488 arg0.integer.value = option;
489
Patrick Mochel90130262006-05-19 16:54:48 -0400490 status = acpi_evaluate_integer(video->device->handle, "_SPD", &args, &tmp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491 if (ACPI_SUCCESS(status))
Len Brown4be44fc2005-08-05 00:44:28 -0400492 status = tmp ? (-EINVAL) : (AE_OK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493
Patrick Mocheld550d982006-06-27 00:41:40 -0400494 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495}
496
497static int
Len Brown4be44fc2005-08-05 00:44:28 -0400498acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long *id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499{
500 int status;
501
Patrick Mochel90130262006-05-19 16:54:48 -0400502 status = acpi_evaluate_integer(video->device->handle, "_GPD", NULL, id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503
Patrick Mocheld550d982006-06-27 00:41:40 -0400504 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505}
506
507static int
Len Brown4be44fc2005-08-05 00:44:28 -0400508acpi_video_bus_POST_options(struct acpi_video_bus *video,
509 unsigned long *options)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510{
Len Brown4be44fc2005-08-05 00:44:28 -0400511 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512
Patrick Mochel90130262006-05-19 16:54:48 -0400513 status = acpi_evaluate_integer(video->device->handle, "_VPO", NULL, options);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514 *options &= 3;
515
Patrick Mocheld550d982006-06-27 00:41:40 -0400516 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517}
518
519/*
520 * Arg:
521 * video : video bus device pointer
522 * bios_flag :
523 * 0. The system BIOS should NOT automatically switch(toggle)
524 * the active display output.
525 * 1. The system BIOS should automatically switch (toggle) the
Julius Volz98fb8fe2007-02-20 16:38:40 +0100526 * active display output. No switch event.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 * 2. The _DGS value should be locked.
528 * 3. The system BIOS should not automatically switch (toggle) the
529 * active display output, but instead generate the display switch
530 * event notify code.
531 * lcd_flag :
532 * 0. The system BIOS should automatically control the brightness level
Julius Volz98fb8fe2007-02-20 16:38:40 +0100533 * of the LCD when the power changes from AC to DC
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534 * 1. The system BIOS should NOT automatically control the brightness
Julius Volz98fb8fe2007-02-20 16:38:40 +0100535 * level of the LCD when the power changes from AC to DC.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536 * Return Value:
537 * -1 wrong arg.
538 */
539
540static int
Len Brown4be44fc2005-08-05 00:44:28 -0400541acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542{
Len Brown4be44fc2005-08-05 00:44:28 -0400543 acpi_integer status = 0;
544 union acpi_object arg0 = { ACPI_TYPE_INTEGER };
545 struct acpi_object_list args = { 1, &arg0 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547
Len Brown4be44fc2005-08-05 00:44:28 -0400548 if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549 status = -1;
550 goto Failed;
551 }
552 arg0.integer.value = (lcd_flag << 2) | bios_flag;
553 video->dos_setting = arg0.integer.value;
Patrick Mochel90130262006-05-19 16:54:48 -0400554 acpi_evaluate_object(video->device->handle, "_DOS", &args, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555
Len Brown4be44fc2005-08-05 00:44:28 -0400556 Failed:
Patrick Mocheld550d982006-06-27 00:41:40 -0400557 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558}
559
560/*
561 * Arg:
562 * device : video output device (LCD, CRT, ..)
563 *
564 * Return Value:
565 * None
566 *
Julius Volz98fb8fe2007-02-20 16:38:40 +0100567 * Find out all required AML methods defined under the output
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568 * device.
569 */
570
Len Brown4be44fc2005-08-05 00:44:28 -0400571static void acpi_video_device_find_cap(struct acpi_video_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573 acpi_handle h_dummy1;
574 int i;
Yu Luming2f3d0002006-11-11 02:40:34 +0800575 u32 max_level = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 union acpi_object *obj = NULL;
577 struct acpi_video_device_brightness *br = NULL;
578
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579
Len Brown4be44fc2005-08-05 00:44:28 -0400580 memset(&device->cap, 0, 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581
Patrick Mochel90130262006-05-19 16:54:48 -0400582 if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_ADR", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583 device->cap._ADR = 1;
584 }
Patrick Mochel90130262006-05-19 16:54:48 -0400585 if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCL", &h_dummy1))) {
Len Brown4be44fc2005-08-05 00:44:28 -0400586 device->cap._BCL = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587 }
Patrick Mochel90130262006-05-19 16:54:48 -0400588 if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_BCM", &h_dummy1))) {
Len Brown4be44fc2005-08-05 00:44:28 -0400589 device->cap._BCM = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590 }
Yu Luming2f3d0002006-11-11 02:40:34 +0800591 if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle,"_BQC",&h_dummy1)))
592 device->cap._BQC = 1;
Patrick Mochel90130262006-05-19 16:54:48 -0400593 if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DDC", &h_dummy1))) {
Len Brown4be44fc2005-08-05 00:44:28 -0400594 device->cap._DDC = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595 }
Patrick Mochel90130262006-05-19 16:54:48 -0400596 if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DCS", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597 device->cap._DCS = 1;
598 }
Patrick Mochel90130262006-05-19 16:54:48 -0400599 if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DGS", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600 device->cap._DGS = 1;
601 }
Patrick Mochel90130262006-05-19 16:54:48 -0400602 if (ACPI_SUCCESS(acpi_get_handle(device->dev->handle, "_DSS", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603 device->cap._DSS = 1;
604 }
605
Danny Kukawkaf70ac0e2007-07-03 01:33:53 -0400606 if (ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607
Danny Kukawkaf70ac0e2007-07-03 01:33:53 -0400608 if (obj->package.count >= 2) {
609 int count = 0;
610 union acpi_object *o;
Len Brown4be44fc2005-08-05 00:44:28 -0400611
Danny Kukawkaf70ac0e2007-07-03 01:33:53 -0400612 br = kzalloc(sizeof(*br), GFP_KERNEL);
613 if (!br) {
614 printk(KERN_ERR "can't allocate memory\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 } else {
Danny Kukawkaf70ac0e2007-07-03 01:33:53 -0400616 br->levels = kmalloc(obj->package.count *
617 sizeof *(br->levels), GFP_KERNEL);
618 if (!br->levels)
619 goto out;
620
621 for (i = 0; i < obj->package.count; i++) {
622 o = (union acpi_object *)&obj->package.
623 elements[i];
624 if (o->type != ACPI_TYPE_INTEGER) {
625 printk(KERN_ERR PREFIX "Invalid data\n");
626 continue;
627 }
628 br->levels[count] = (u32) o->integer.value;
629
630 if (br->levels[count] > max_level)
631 max_level = br->levels[count];
632 count++;
633 }
634 out:
635 if (count < 2) {
636 kfree(br->levels);
637 kfree(br);
638 } else {
639 br->count = count;
640 device->brightness = br;
641 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
642 "found %d brightness levels\n",
643 count));
644 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645 }
646 }
Danny Kukawkaf70ac0e2007-07-03 01:33:53 -0400647
648 } else {
649 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available LCD brightness level\n"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650 }
651
Paulo Marquesd1dd0c22005-03-30 22:39:49 -0500652 kfree(obj);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653
Danny Kukawkaf70ac0e2007-07-03 01:33:53 -0400654 if (device->cap._BCL && device->cap._BCM && device->cap._BQC && max_level > 0){
Yu Luming2f3d0002006-11-11 02:40:34 +0800655 unsigned long tmp;
656 static int count = 0;
657 char *name;
Yu Luming2f3d0002006-11-11 02:40:34 +0800658 name = kzalloc(MAX_NAME_LEN, GFP_KERNEL);
659 if (!name)
660 return;
661
Yu Luming2f3d0002006-11-11 02:40:34 +0800662 sprintf(name, "acpi_video%d", count++);
Yu Luming2f3d0002006-11-11 02:40:34 +0800663 acpi_video_device_lcd_get_level_current(device, &tmp);
Yu Luming2f3d0002006-11-11 02:40:34 +0800664 device->backlight = backlight_device_register(name,
Richard Purdie599a52d2007-02-10 23:07:48 +0000665 NULL, device, &acpi_backlight_ops);
666 device->backlight->props.max_brightness = max_level;
667 device->backlight->props.brightness = (int)tmp;
668 backlight_update_status(device->backlight);
669
Yu Luming2f3d0002006-11-11 02:40:34 +0800670 kfree(name);
671 }
Luming Yu23b0f012007-05-09 21:07:05 +0800672 if (device->cap._DCS && device->cap._DSS){
673 static int count = 0;
674 char *name;
675 name = kzalloc(MAX_NAME_LEN, GFP_KERNEL);
676 if (!name)
677 return;
678 sprintf(name, "acpi_video%d", count++);
679 device->output_dev = video_output_register(name,
680 NULL, device, &acpi_output_properties);
681 kfree(name);
682 }
Patrick Mocheld550d982006-06-27 00:41:40 -0400683 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684}
685
686/*
687 * Arg:
688 * device : video output device (VGA)
689 *
690 * Return Value:
691 * None
692 *
Julius Volz98fb8fe2007-02-20 16:38:40 +0100693 * Find out all required AML methods defined under the video bus device.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 */
695
Len Brown4be44fc2005-08-05 00:44:28 -0400696static void acpi_video_bus_find_cap(struct acpi_video_bus *video)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697{
Len Brown4be44fc2005-08-05 00:44:28 -0400698 acpi_handle h_dummy1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699
Len Brown4be44fc2005-08-05 00:44:28 -0400700 memset(&video->cap, 0, 4);
Patrick Mochel90130262006-05-19 16:54:48 -0400701 if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOS", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700702 video->cap._DOS = 1;
703 }
Patrick Mochel90130262006-05-19 16:54:48 -0400704 if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_DOD", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705 video->cap._DOD = 1;
706 }
Patrick Mochel90130262006-05-19 16:54:48 -0400707 if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_ROM", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700708 video->cap._ROM = 1;
709 }
Patrick Mochel90130262006-05-19 16:54:48 -0400710 if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_GPD", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700711 video->cap._GPD = 1;
712 }
Patrick Mochel90130262006-05-19 16:54:48 -0400713 if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_SPD", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714 video->cap._SPD = 1;
715 }
Patrick Mochel90130262006-05-19 16:54:48 -0400716 if (ACPI_SUCCESS(acpi_get_handle(video->device->handle, "_VPO", &h_dummy1))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717 video->cap._VPO = 1;
718 }
719}
720
721/*
722 * Check whether the video bus device has required AML method to
723 * support the desired features
724 */
725
Len Brown4be44fc2005-08-05 00:44:28 -0400726static int acpi_video_bus_check(struct acpi_video_bus *video)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727{
Len Brown4be44fc2005-08-05 00:44:28 -0400728 acpi_status status = -ENOENT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729
Linus Torvalds1da177e2005-04-16 15:20:36 -0700730
731 if (!video)
Patrick Mocheld550d982006-06-27 00:41:40 -0400732 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733
734 /* Since there is no HID, CID and so on for VGA driver, we have
735 * to check well known required nodes.
736 */
737
Julius Volz98fb8fe2007-02-20 16:38:40 +0100738 /* Does this device support video switching? */
Len Brown4be44fc2005-08-05 00:44:28 -0400739 if (video->cap._DOS) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740 video->flags.multihead = 1;
741 status = 0;
742 }
743
Julius Volz98fb8fe2007-02-20 16:38:40 +0100744 /* Does this device support retrieving a video ROM? */
Len Brown4be44fc2005-08-05 00:44:28 -0400745 if (video->cap._ROM) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746 video->flags.rom = 1;
747 status = 0;
748 }
749
Julius Volz98fb8fe2007-02-20 16:38:40 +0100750 /* Does this device support configuring which video device to POST? */
Len Brown4be44fc2005-08-05 00:44:28 -0400751 if (video->cap._GPD && video->cap._SPD && video->cap._VPO) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752 video->flags.post = 1;
753 status = 0;
754 }
755
Patrick Mocheld550d982006-06-27 00:41:40 -0400756 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700757}
758
759/* --------------------------------------------------------------------------
760 FS Interface (/proc)
761 -------------------------------------------------------------------------- */
762
Len Brown4be44fc2005-08-05 00:44:28 -0400763static struct proc_dir_entry *acpi_video_dir;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700764
765/* video devices */
766
Len Brown4be44fc2005-08-05 00:44:28 -0400767static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200769 struct acpi_video_device *dev = seq->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771
772 if (!dev)
773 goto end;
774
775 seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id);
776 seq_printf(seq, "type: ");
777 if (dev->flags.crt)
778 seq_printf(seq, "CRT\n");
779 else if (dev->flags.lcd)
780 seq_printf(seq, "LCD\n");
781 else if (dev->flags.tvout)
782 seq_printf(seq, "TVOUT\n");
Rui Zhang82cae992007-01-03 23:40:53 -0500783 else if (dev->flags.dvi)
784 seq_printf(seq, "DVI\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700785 else
786 seq_printf(seq, "UNKNOWN\n");
787
Len Brown4be44fc2005-08-05 00:44:28 -0400788 seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789
Len Brown4be44fc2005-08-05 00:44:28 -0400790 end:
Patrick Mocheld550d982006-06-27 00:41:40 -0400791 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792}
793
794static int
Len Brown4be44fc2005-08-05 00:44:28 -0400795acpi_video_device_info_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796{
797 return single_open(file, acpi_video_device_info_seq_show,
798 PDE(inode)->data);
799}
800
Len Brown4be44fc2005-08-05 00:44:28 -0400801static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802{
Len Brown4be44fc2005-08-05 00:44:28 -0400803 int status;
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200804 struct acpi_video_device *dev = seq->private;
Len Brown4be44fc2005-08-05 00:44:28 -0400805 unsigned long state;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807
808 if (!dev)
809 goto end;
810
811 status = acpi_video_device_get_state(dev, &state);
812 seq_printf(seq, "state: ");
813 if (ACPI_SUCCESS(status))
814 seq_printf(seq, "0x%02lx\n", state);
815 else
816 seq_printf(seq, "<not supported>\n");
817
818 status = acpi_video_device_query(dev, &state);
819 seq_printf(seq, "query: ");
820 if (ACPI_SUCCESS(status))
821 seq_printf(seq, "0x%02lx\n", state);
822 else
823 seq_printf(seq, "<not supported>\n");
824
Len Brown4be44fc2005-08-05 00:44:28 -0400825 end:
Patrick Mocheld550d982006-06-27 00:41:40 -0400826 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827}
828
829static int
Len Brown4be44fc2005-08-05 00:44:28 -0400830acpi_video_device_state_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831{
832 return single_open(file, acpi_video_device_state_seq_show,
833 PDE(inode)->data);
834}
835
836static ssize_t
Len Brown4be44fc2005-08-05 00:44:28 -0400837acpi_video_device_write_state(struct file *file,
838 const char __user * buffer,
839 size_t count, loff_t * data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840{
Len Brown4be44fc2005-08-05 00:44:28 -0400841 int status;
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200842 struct seq_file *m = file->private_data;
843 struct acpi_video_device *dev = m->private;
Len Brown4be44fc2005-08-05 00:44:28 -0400844 char str[12] = { 0 };
845 u32 state = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847
848 if (!dev || count + 1 > sizeof str)
Patrick Mocheld550d982006-06-27 00:41:40 -0400849 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850
851 if (copy_from_user(str, buffer, count))
Patrick Mocheld550d982006-06-27 00:41:40 -0400852 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853
854 str[count] = 0;
855 state = simple_strtoul(str, NULL, 0);
Len Brown4be44fc2005-08-05 00:44:28 -0400856 state &= ((1ul << 31) | (1ul << 30) | (1ul << 0));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857
858 status = acpi_video_device_set_state(dev, state);
859
860 if (status)
Patrick Mocheld550d982006-06-27 00:41:40 -0400861 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700862
Patrick Mocheld550d982006-06-27 00:41:40 -0400863 return count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700864}
865
866static int
Len Brown4be44fc2005-08-05 00:44:28 -0400867acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700868{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200869 struct acpi_video_device *dev = seq->private;
Len Brown4be44fc2005-08-05 00:44:28 -0400870 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700871
Linus Torvalds1da177e2005-04-16 15:20:36 -0700872
873 if (!dev || !dev->brightness) {
874 seq_printf(seq, "<not supported>\n");
Patrick Mocheld550d982006-06-27 00:41:40 -0400875 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876 }
877
878 seq_printf(seq, "levels: ");
879 for (i = 0; i < dev->brightness->count; i++)
880 seq_printf(seq, " %d", dev->brightness->levels[i]);
881 seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr);
882
Patrick Mocheld550d982006-06-27 00:41:40 -0400883 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884}
885
886static int
Len Brown4be44fc2005-08-05 00:44:28 -0400887acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888{
889 return single_open(file, acpi_video_device_brightness_seq_show,
890 PDE(inode)->data);
891}
892
893static ssize_t
Len Brown4be44fc2005-08-05 00:44:28 -0400894acpi_video_device_write_brightness(struct file *file,
895 const char __user * buffer,
896 size_t count, loff_t * data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200898 struct seq_file *m = file->private_data;
899 struct acpi_video_device *dev = m->private;
Danny Baumannc88c5782007-11-02 13:47:53 +0100900 char str[5] = { 0 };
Len Brown4be44fc2005-08-05 00:44:28 -0400901 unsigned int level = 0;
902 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904
Thomas Renninger59d399d2005-11-08 05:27:00 -0500905 if (!dev || !dev->brightness || count + 1 > sizeof str)
Patrick Mocheld550d982006-06-27 00:41:40 -0400906 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700907
908 if (copy_from_user(str, buffer, count))
Patrick Mocheld550d982006-06-27 00:41:40 -0400909 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910
911 str[count] = 0;
912 level = simple_strtoul(str, NULL, 0);
Len Brown4be44fc2005-08-05 00:44:28 -0400913
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914 if (level > 100)
Patrick Mocheld550d982006-06-27 00:41:40 -0400915 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916
Julius Volz98fb8fe2007-02-20 16:38:40 +0100917 /* validate through the list of available levels */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700918 for (i = 0; i < dev->brightness->count; i++)
919 if (level == dev->brightness->levels[i]) {
Len Brown4be44fc2005-08-05 00:44:28 -0400920 if (ACPI_SUCCESS
921 (acpi_video_device_lcd_set_level(dev, level)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922 dev->brightness->curr = level;
923 break;
924 }
925
Patrick Mocheld550d982006-06-27 00:41:40 -0400926 return count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927}
928
Len Brown4be44fc2005-08-05 00:44:28 -0400929static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700930{
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200931 struct acpi_video_device *dev = seq->private;
Len Brown4be44fc2005-08-05 00:44:28 -0400932 int status;
933 int i;
934 union acpi_object *edid = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700935
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936
937 if (!dev)
938 goto out;
939
Len Brown4be44fc2005-08-05 00:44:28 -0400940 status = acpi_video_device_EDID(dev, &edid, 128);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700941 if (ACPI_FAILURE(status)) {
Len Brown4be44fc2005-08-05 00:44:28 -0400942 status = acpi_video_device_EDID(dev, &edid, 256);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943 }
944
945 if (ACPI_FAILURE(status)) {
946 goto out;
947 }
948
949 if (edid && edid->type == ACPI_TYPE_BUFFER) {
950 for (i = 0; i < edid->buffer.length; i++)
951 seq_putc(seq, edid->buffer.pointer[i]);
952 }
953
Len Brown4be44fc2005-08-05 00:44:28 -0400954 out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700955 if (!edid)
956 seq_printf(seq, "<not supported>\n");
957 else
958 kfree(edid);
959
Patrick Mocheld550d982006-06-27 00:41:40 -0400960 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700961}
962
963static int
Len Brown4be44fc2005-08-05 00:44:28 -0400964acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700965{
966 return single_open(file, acpi_video_device_EDID_seq_show,
967 PDE(inode)->data);
968}
969
Len Brown4be44fc2005-08-05 00:44:28 -0400970static int acpi_video_device_add_fs(struct acpi_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971{
Len Brown4be44fc2005-08-05 00:44:28 -0400972 struct proc_dir_entry *entry = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700973 struct acpi_video_device *vid_dev;
974
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975
976 if (!device)
Patrick Mocheld550d982006-06-27 00:41:40 -0400977 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700978
Jan Engelhardt50dd0962006-10-01 00:28:50 +0200979 vid_dev = acpi_driver_data(device);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980 if (!vid_dev)
Patrick Mocheld550d982006-06-27 00:41:40 -0400981 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982
983 if (!acpi_device_dir(device)) {
984 acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
Len Brown4be44fc2005-08-05 00:44:28 -0400985 vid_dev->video->dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700986 if (!acpi_device_dir(device))
Patrick Mocheld550d982006-06-27 00:41:40 -0400987 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700988 acpi_device_dir(device)->owner = THIS_MODULE;
989 }
990
991 /* 'info' [R] */
992 entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device));
993 if (!entry)
Patrick Mocheld550d982006-06-27 00:41:40 -0400994 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700995 else {
996 entry->proc_fops = &acpi_video_device_info_fops;
997 entry->data = acpi_driver_data(device);
998 entry->owner = THIS_MODULE;
999 }
1000
1001 /* 'state' [R/W] */
Len Brown4be44fc2005-08-05 00:44:28 -04001002 entry =
1003 create_proc_entry("state", S_IFREG | S_IRUGO | S_IWUSR,
1004 acpi_device_dir(device));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005 if (!entry)
Patrick Mocheld550d982006-06-27 00:41:40 -04001006 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007 else {
Arjan van de Vend479e902006-01-06 16:47:00 -05001008 acpi_video_device_state_fops.write = acpi_video_device_write_state;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009 entry->proc_fops = &acpi_video_device_state_fops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010 entry->data = acpi_driver_data(device);
1011 entry->owner = THIS_MODULE;
1012 }
1013
1014 /* 'brightness' [R/W] */
Len Brown4be44fc2005-08-05 00:44:28 -04001015 entry =
1016 create_proc_entry("brightness", S_IFREG | S_IRUGO | S_IWUSR,
1017 acpi_device_dir(device));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018 if (!entry)
Patrick Mocheld550d982006-06-27 00:41:40 -04001019 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001020 else {
Arjan van de Vend479e902006-01-06 16:47:00 -05001021 acpi_video_device_brightness_fops.write = acpi_video_device_write_brightness;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001022 entry->proc_fops = &acpi_video_device_brightness_fops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001023 entry->data = acpi_driver_data(device);
1024 entry->owner = THIS_MODULE;
1025 }
1026
1027 /* 'EDID' [R] */
1028 entry = create_proc_entry("EDID", S_IRUGO, acpi_device_dir(device));
1029 if (!entry)
Patrick Mocheld550d982006-06-27 00:41:40 -04001030 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031 else {
1032 entry->proc_fops = &acpi_video_device_EDID_fops;
1033 entry->data = acpi_driver_data(device);
1034 entry->owner = THIS_MODULE;
1035 }
1036
Patrick Mocheld550d982006-06-27 00:41:40 -04001037 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001038}
1039
Len Brown4be44fc2005-08-05 00:44:28 -04001040static int acpi_video_device_remove_fs(struct acpi_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001041{
1042 struct acpi_video_device *vid_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001043
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001044 vid_dev = acpi_driver_data(device);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001045 if (!vid_dev || !vid_dev->video || !vid_dev->video->dir)
Patrick Mocheld550d982006-06-27 00:41:40 -04001046 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001047
1048 if (acpi_device_dir(device)) {
1049 remove_proc_entry("info", acpi_device_dir(device));
1050 remove_proc_entry("state", acpi_device_dir(device));
1051 remove_proc_entry("brightness", acpi_device_dir(device));
1052 remove_proc_entry("EDID", acpi_device_dir(device));
Len Brown4be44fc2005-08-05 00:44:28 -04001053 remove_proc_entry(acpi_device_bid(device), vid_dev->video->dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001054 acpi_device_dir(device) = NULL;
1055 }
1056
Patrick Mocheld550d982006-06-27 00:41:40 -04001057 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001058}
1059
Linus Torvalds1da177e2005-04-16 15:20:36 -07001060/* video bus */
Len Brown4be44fc2005-08-05 00:44:28 -04001061static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001062{
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001063 struct acpi_video_bus *video = seq->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001064
Linus Torvalds1da177e2005-04-16 15:20:36 -07001065
1066 if (!video)
1067 goto end;
1068
1069 seq_printf(seq, "Switching heads: %s\n",
Len Brown4be44fc2005-08-05 00:44:28 -04001070 video->flags.multihead ? "yes" : "no");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001071 seq_printf(seq, "Video ROM: %s\n",
Len Brown4be44fc2005-08-05 00:44:28 -04001072 video->flags.rom ? "yes" : "no");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001073 seq_printf(seq, "Device to be POSTed on boot: %s\n",
Len Brown4be44fc2005-08-05 00:44:28 -04001074 video->flags.post ? "yes" : "no");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001075
Len Brown4be44fc2005-08-05 00:44:28 -04001076 end:
Patrick Mocheld550d982006-06-27 00:41:40 -04001077 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001078}
1079
Len Brown4be44fc2005-08-05 00:44:28 -04001080static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001081{
Len Brown4be44fc2005-08-05 00:44:28 -04001082 return single_open(file, acpi_video_bus_info_seq_show,
1083 PDE(inode)->data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001084}
1085
Len Brown4be44fc2005-08-05 00:44:28 -04001086static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001087{
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001088 struct acpi_video_bus *video = seq->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001089
Linus Torvalds1da177e2005-04-16 15:20:36 -07001090
1091 if (!video)
1092 goto end;
1093
1094 printk(KERN_INFO PREFIX "Please implement %s\n", __FUNCTION__);
1095 seq_printf(seq, "<TODO>\n");
1096
Len Brown4be44fc2005-08-05 00:44:28 -04001097 end:
Patrick Mocheld550d982006-06-27 00:41:40 -04001098 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001099}
1100
Len Brown4be44fc2005-08-05 00:44:28 -04001101static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001102{
1103 return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data);
1104}
1105
Len Brown4be44fc2005-08-05 00:44:28 -04001106static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001107{
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001108 struct acpi_video_bus *video = seq->private;
Len Brown4be44fc2005-08-05 00:44:28 -04001109 unsigned long options;
1110 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001111
Linus Torvalds1da177e2005-04-16 15:20:36 -07001112
1113 if (!video)
1114 goto end;
1115
1116 status = acpi_video_bus_POST_options(video, &options);
1117 if (ACPI_SUCCESS(status)) {
1118 if (!(options & 1)) {
Len Brown4be44fc2005-08-05 00:44:28 -04001119 printk(KERN_WARNING PREFIX
1120 "The motherboard VGA device is not listed as a possible POST device.\n");
1121 printk(KERN_WARNING PREFIX
Julius Volz98fb8fe2007-02-20 16:38:40 +01001122 "This indicates a BIOS bug. Please contact the manufacturer.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001123 }
1124 printk("%lx\n", options);
Julius Volz98fb8fe2007-02-20 16:38:40 +01001125 seq_printf(seq, "can POST: <integrated video>");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001126 if (options & 2)
1127 seq_printf(seq, " <PCI video>");
1128 if (options & 4)
1129 seq_printf(seq, " <AGP video>");
1130 seq_putc(seq, '\n');
1131 } else
1132 seq_printf(seq, "<not supported>\n");
Len Brown4be44fc2005-08-05 00:44:28 -04001133 end:
Patrick Mocheld550d982006-06-27 00:41:40 -04001134 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001135}
1136
1137static int
Len Brown4be44fc2005-08-05 00:44:28 -04001138acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001139{
Len Brown4be44fc2005-08-05 00:44:28 -04001140 return single_open(file, acpi_video_bus_POST_info_seq_show,
1141 PDE(inode)->data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001142}
1143
Len Brown4be44fc2005-08-05 00:44:28 -04001144static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001145{
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001146 struct acpi_video_bus *video = seq->private;
Len Brown4be44fc2005-08-05 00:44:28 -04001147 int status;
1148 unsigned long id;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001149
Linus Torvalds1da177e2005-04-16 15:20:36 -07001150
1151 if (!video)
1152 goto end;
1153
Len Brown4be44fc2005-08-05 00:44:28 -04001154 status = acpi_video_bus_get_POST(video, &id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001155 if (!ACPI_SUCCESS(status)) {
1156 seq_printf(seq, "<not supported>\n");
1157 goto end;
1158 }
Julius Volz98fb8fe2007-02-20 16:38:40 +01001159 seq_printf(seq, "device POSTed is <%s>\n", device_decode[id & 3]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001160
Len Brown4be44fc2005-08-05 00:44:28 -04001161 end:
Patrick Mocheld550d982006-06-27 00:41:40 -04001162 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001163}
1164
Len Brown4be44fc2005-08-05 00:44:28 -04001165static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001166{
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001167 struct acpi_video_bus *video = seq->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001168
Linus Torvalds1da177e2005-04-16 15:20:36 -07001169
Len Brown4be44fc2005-08-05 00:44:28 -04001170 seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001171
Patrick Mocheld550d982006-06-27 00:41:40 -04001172 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001173}
1174
Len Brown4be44fc2005-08-05 00:44:28 -04001175static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001176{
Len Brown4be44fc2005-08-05 00:44:28 -04001177 return single_open(file, acpi_video_bus_POST_seq_show,
1178 PDE(inode)->data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001179}
1180
Len Brown4be44fc2005-08-05 00:44:28 -04001181static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001182{
1183 return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data);
1184}
1185
1186static ssize_t
Len Brown4be44fc2005-08-05 00:44:28 -04001187acpi_video_bus_write_POST(struct file *file,
1188 const char __user * buffer,
1189 size_t count, loff_t * data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001190{
Len Brown4be44fc2005-08-05 00:44:28 -04001191 int status;
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001192 struct seq_file *m = file->private_data;
1193 struct acpi_video_bus *video = m->private;
Len Brown4be44fc2005-08-05 00:44:28 -04001194 char str[12] = { 0 };
1195 unsigned long opt, options;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001196
Linus Torvalds1da177e2005-04-16 15:20:36 -07001197
Linus Torvalds1da177e2005-04-16 15:20:36 -07001198 if (!video || count + 1 > sizeof str)
Patrick Mocheld550d982006-06-27 00:41:40 -04001199 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001200
1201 status = acpi_video_bus_POST_options(video, &options);
1202 if (!ACPI_SUCCESS(status))
Patrick Mocheld550d982006-06-27 00:41:40 -04001203 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001204
1205 if (copy_from_user(str, buffer, count))
Patrick Mocheld550d982006-06-27 00:41:40 -04001206 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001207
1208 str[count] = 0;
1209 opt = strtoul(str, NULL, 0);
1210 if (opt > 3)
Patrick Mocheld550d982006-06-27 00:41:40 -04001211 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001212
Julius Volz98fb8fe2007-02-20 16:38:40 +01001213 /* just in case an OEM 'forgot' the motherboard... */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001214 options |= 1;
1215
1216 if (options & (1ul << opt)) {
Len Brown4be44fc2005-08-05 00:44:28 -04001217 status = acpi_video_bus_set_POST(video, opt);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001218 if (!ACPI_SUCCESS(status))
Patrick Mocheld550d982006-06-27 00:41:40 -04001219 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001220
1221 }
1222
Patrick Mocheld550d982006-06-27 00:41:40 -04001223 return count;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001224}
1225
1226static ssize_t
Len Brown4be44fc2005-08-05 00:44:28 -04001227acpi_video_bus_write_DOS(struct file *file,
1228 const char __user * buffer,
1229 size_t count, loff_t * data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001230{
Len Brown4be44fc2005-08-05 00:44:28 -04001231 int status;
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001232 struct seq_file *m = file->private_data;
1233 struct acpi_video_bus *video = m->private;
Len Brown4be44fc2005-08-05 00:44:28 -04001234 char str[12] = { 0 };
1235 unsigned long opt;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001236
Linus Torvalds1da177e2005-04-16 15:20:36 -07001237
Linus Torvalds1da177e2005-04-16 15:20:36 -07001238 if (!video || count + 1 > sizeof str)
Patrick Mocheld550d982006-06-27 00:41:40 -04001239 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001240
1241 if (copy_from_user(str, buffer, count))
Patrick Mocheld550d982006-06-27 00:41:40 -04001242 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001243
1244 str[count] = 0;
1245 opt = strtoul(str, NULL, 0);
1246 if (opt > 7)
Patrick Mocheld550d982006-06-27 00:41:40 -04001247 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001248
Len Brown4be44fc2005-08-05 00:44:28 -04001249 status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001250
1251 if (!ACPI_SUCCESS(status))
Patrick Mocheld550d982006-06-27 00:41:40 -04001252 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001253
Patrick Mocheld550d982006-06-27 00:41:40 -04001254 return count;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255}
1256
Len Brown4be44fc2005-08-05 00:44:28 -04001257static int acpi_video_bus_add_fs(struct acpi_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001258{
Len Brown4be44fc2005-08-05 00:44:28 -04001259 struct proc_dir_entry *entry = NULL;
1260 struct acpi_video_bus *video;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001261
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001263 video = acpi_driver_data(device);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001264
1265 if (!acpi_device_dir(device)) {
1266 acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
Len Brown4be44fc2005-08-05 00:44:28 -04001267 acpi_video_dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001268 if (!acpi_device_dir(device))
Patrick Mocheld550d982006-06-27 00:41:40 -04001269 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001270 video->dir = acpi_device_dir(device);
1271 acpi_device_dir(device)->owner = THIS_MODULE;
1272 }
1273
1274 /* 'info' [R] */
1275 entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device));
1276 if (!entry)
Patrick Mocheld550d982006-06-27 00:41:40 -04001277 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001278 else {
1279 entry->proc_fops = &acpi_video_bus_info_fops;
1280 entry->data = acpi_driver_data(device);
1281 entry->owner = THIS_MODULE;
1282 }
1283
1284 /* 'ROM' [R] */
1285 entry = create_proc_entry("ROM", S_IRUGO, acpi_device_dir(device));
1286 if (!entry)
Patrick Mocheld550d982006-06-27 00:41:40 -04001287 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001288 else {
1289 entry->proc_fops = &acpi_video_bus_ROM_fops;
1290 entry->data = acpi_driver_data(device);
1291 entry->owner = THIS_MODULE;
1292 }
1293
1294 /* 'POST_info' [R] */
Len Brown4be44fc2005-08-05 00:44:28 -04001295 entry =
1296 create_proc_entry("POST_info", S_IRUGO, acpi_device_dir(device));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297 if (!entry)
Patrick Mocheld550d982006-06-27 00:41:40 -04001298 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001299 else {
1300 entry->proc_fops = &acpi_video_bus_POST_info_fops;
1301 entry->data = acpi_driver_data(device);
1302 entry->owner = THIS_MODULE;
1303 }
1304
1305 /* 'POST' [R/W] */
Len Brown4be44fc2005-08-05 00:44:28 -04001306 entry =
1307 create_proc_entry("POST", S_IFREG | S_IRUGO | S_IRUSR,
1308 acpi_device_dir(device));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001309 if (!entry)
Patrick Mocheld550d982006-06-27 00:41:40 -04001310 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001311 else {
Arjan van de Vend479e902006-01-06 16:47:00 -05001312 acpi_video_bus_POST_fops.write = acpi_video_bus_write_POST;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001313 entry->proc_fops = &acpi_video_bus_POST_fops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001314 entry->data = acpi_driver_data(device);
1315 entry->owner = THIS_MODULE;
1316 }
1317
1318 /* 'DOS' [R/W] */
Len Brown4be44fc2005-08-05 00:44:28 -04001319 entry =
1320 create_proc_entry("DOS", S_IFREG | S_IRUGO | S_IRUSR,
1321 acpi_device_dir(device));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322 if (!entry)
Patrick Mocheld550d982006-06-27 00:41:40 -04001323 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001324 else {
Arjan van de Vend479e902006-01-06 16:47:00 -05001325 acpi_video_bus_DOS_fops.write = acpi_video_bus_write_DOS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001326 entry->proc_fops = &acpi_video_bus_DOS_fops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001327 entry->data = acpi_driver_data(device);
1328 entry->owner = THIS_MODULE;
1329 }
1330
Patrick Mocheld550d982006-06-27 00:41:40 -04001331 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332}
1333
Len Brown4be44fc2005-08-05 00:44:28 -04001334static int acpi_video_bus_remove_fs(struct acpi_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335{
Len Brown4be44fc2005-08-05 00:44:28 -04001336 struct acpi_video_bus *video;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001337
Linus Torvalds1da177e2005-04-16 15:20:36 -07001338
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001339 video = acpi_driver_data(device);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001340
1341 if (acpi_device_dir(device)) {
1342 remove_proc_entry("info", acpi_device_dir(device));
1343 remove_proc_entry("ROM", acpi_device_dir(device));
1344 remove_proc_entry("POST_info", acpi_device_dir(device));
1345 remove_proc_entry("POST", acpi_device_dir(device));
1346 remove_proc_entry("DOS", acpi_device_dir(device));
Len Brown4be44fc2005-08-05 00:44:28 -04001347 remove_proc_entry(acpi_device_bid(device), acpi_video_dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001348 acpi_device_dir(device) = NULL;
1349 }
1350
Patrick Mocheld550d982006-06-27 00:41:40 -04001351 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001352}
1353
1354/* --------------------------------------------------------------------------
1355 Driver Interface
1356 -------------------------------------------------------------------------- */
1357
1358/* device interface */
Rui Zhang82cae992007-01-03 23:40:53 -05001359static struct acpi_video_device_attrib*
1360acpi_video_get_device_attr(struct acpi_video_bus *video, unsigned long device_id)
1361{
1362 int count;
1363
1364 for(count = 0; count < video->attached_count; count++)
1365 if((video->attached_array[count].value.int_val & 0xffff) == device_id)
1366 return &(video->attached_array[count].value.attrib);
1367 return NULL;
1368}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001369
1370static int
Len Brown4be44fc2005-08-05 00:44:28 -04001371acpi_video_bus_get_one_device(struct acpi_device *device,
1372 struct acpi_video_bus *video)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373{
Len Brown4be44fc2005-08-05 00:44:28 -04001374 unsigned long device_id;
Yu, Luming973bf492006-04-27 05:25:00 -04001375 int status;
Len Brown4be44fc2005-08-05 00:44:28 -04001376 struct acpi_video_device *data;
Rui Zhang82cae992007-01-03 23:40:53 -05001377 struct acpi_video_device_attrib* attribute;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001378
1379 if (!device || !video)
Patrick Mocheld550d982006-06-27 00:41:40 -04001380 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001381
Len Brown4be44fc2005-08-05 00:44:28 -04001382 status =
1383 acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001384 if (ACPI_SUCCESS(status)) {
1385
Burman Yan36bcbec2006-12-19 12:56:11 -08001386 data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001387 if (!data)
Patrick Mocheld550d982006-06-27 00:41:40 -04001388 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001389
Linus Torvalds1da177e2005-04-16 15:20:36 -07001390 strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME);
1391 strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS);
1392 acpi_driver_data(device) = data;
1393
1394 data->device_id = device_id;
1395 data->video = video;
1396 data->dev = device;
1397
Rui Zhang82cae992007-01-03 23:40:53 -05001398 attribute = acpi_video_get_device_attr(video, device_id);
1399
1400 if((attribute != NULL) && attribute->device_id_scheme) {
1401 switch (attribute->display_type) {
1402 case ACPI_VIDEO_DISPLAY_CRT:
1403 data->flags.crt = 1;
1404 break;
1405 case ACPI_VIDEO_DISPLAY_TV:
1406 data->flags.tvout = 1;
1407 break;
1408 case ACPI_VIDEO_DISPLAY_DVI:
1409 data->flags.dvi = 1;
1410 break;
1411 case ACPI_VIDEO_DISPLAY_LCD:
1412 data->flags.lcd = 1;
1413 break;
1414 default:
1415 data->flags.unknown = 1;
1416 break;
1417 }
1418 if(attribute->bios_can_detect)
1419 data->flags.bios = 1;
1420 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -07001421 data->flags.unknown = 1;
Len Brown4be44fc2005-08-05 00:44:28 -04001422
Linus Torvalds1da177e2005-04-16 15:20:36 -07001423 acpi_video_device_bind(video, data);
1424 acpi_video_device_find_cap(data);
1425
Patrick Mochel90130262006-05-19 16:54:48 -04001426 status = acpi_install_notify_handler(device->handle,
Len Brown4be44fc2005-08-05 00:44:28 -04001427 ACPI_DEVICE_NOTIFY,
1428 acpi_video_device_notify,
1429 data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001430 if (ACPI_FAILURE(status)) {
1431 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
Len Brown4be44fc2005-08-05 00:44:28 -04001432 "Error installing notify handler\n"));
Yu, Luming973bf492006-04-27 05:25:00 -04001433 if(data->brightness)
1434 kfree(data->brightness->levels);
1435 kfree(data->brightness);
1436 kfree(data);
1437 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001438 }
1439
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -05001440 mutex_lock(&video->device_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001441 list_add_tail(&data->entry, &video->video_device_list);
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -05001442 mutex_unlock(&video->device_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001443
1444 acpi_video_device_add_fs(device);
1445
Patrick Mocheld550d982006-06-27 00:41:40 -04001446 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001447 }
1448
Patrick Mocheld550d982006-06-27 00:41:40 -04001449 return -ENOENT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001450}
1451
1452/*
1453 * Arg:
1454 * video : video bus device
1455 *
1456 * Return:
1457 * none
1458 *
1459 * Enumerate the video device list of the video bus,
1460 * bind the ids with the corresponding video devices
1461 * under the video bus.
Len Brown4be44fc2005-08-05 00:44:28 -04001462 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001463
Len Brown4be44fc2005-08-05 00:44:28 -04001464static void acpi_video_device_rebind(struct acpi_video_bus *video)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001465{
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001466 struct acpi_video_device *dev;
1467
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -05001468 mutex_lock(&video->device_list_lock);
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001469
1470 list_for_each_entry(dev, &video->video_device_list, entry)
Len Brown4be44fc2005-08-05 00:44:28 -04001471 acpi_video_device_bind(video, dev);
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001472
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -05001473 mutex_unlock(&video->device_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001474}
1475
1476/*
1477 * Arg:
1478 * video : video bus device
1479 * device : video output device under the video
1480 * bus
1481 *
1482 * Return:
1483 * none
1484 *
1485 * Bind the ids with the corresponding video devices
1486 * under the video bus.
Len Brown4be44fc2005-08-05 00:44:28 -04001487 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001488
1489static void
Len Brown4be44fc2005-08-05 00:44:28 -04001490acpi_video_device_bind(struct acpi_video_bus *video,
1491 struct acpi_video_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001492{
Len Brown4be44fc2005-08-05 00:44:28 -04001493 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001494
1495#define IDS_VAL(i) video->attached_array[i].value.int_val
1496#define IDS_BIND(i) video->attached_array[i].bind_info
Len Brown4be44fc2005-08-05 00:44:28 -04001497
1498 for (i = 0; IDS_VAL(i) != ACPI_VIDEO_HEAD_INVALID &&
1499 i < video->attached_count; i++) {
1500 if (device->device_id == (IDS_VAL(i) & 0xffff)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001501 IDS_BIND(i) = device;
1502 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i));
1503 }
1504 }
1505#undef IDS_VAL
1506#undef IDS_BIND
1507}
1508
1509/*
1510 * Arg:
1511 * video : video bus device
1512 *
1513 * Return:
1514 * < 0 : error
1515 *
1516 * Call _DOD to enumerate all devices attached to display adapter
1517 *
Len Brown4be44fc2005-08-05 00:44:28 -04001518 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001519
1520static int acpi_video_device_enumerate(struct acpi_video_bus *video)
1521{
Len Brown4be44fc2005-08-05 00:44:28 -04001522 int status;
1523 int count;
1524 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001525 struct acpi_video_enumerated_device *active_device_list;
Len Brown4be44fc2005-08-05 00:44:28 -04001526 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1527 union acpi_object *dod = NULL;
1528 union acpi_object *obj;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001529
Patrick Mochel90130262006-05-19 16:54:48 -04001530 status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001531 if (!ACPI_SUCCESS(status)) {
Thomas Renningera6fc6722006-06-26 23:58:43 -04001532 ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD"));
Patrick Mocheld550d982006-06-27 00:41:40 -04001533 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001534 }
1535
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001536 dod = buffer.pointer;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001537 if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) {
Thomas Renningera6fc6722006-06-26 23:58:43 -04001538 ACPI_EXCEPTION((AE_INFO, status, "Invalid _DOD data"));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001539 status = -EFAULT;
1540 goto out;
1541 }
1542
1543 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n",
Len Brown4be44fc2005-08-05 00:44:28 -04001544 dod->package.count));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001545
Len Brown4be44fc2005-08-05 00:44:28 -04001546 active_device_list = kmalloc((1 +
1547 dod->package.count) *
1548 sizeof(struct
1549 acpi_video_enumerated_device),
1550 GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001551
1552 if (!active_device_list) {
1553 status = -ENOMEM;
1554 goto out;
1555 }
1556
1557 count = 0;
1558 for (i = 0; i < dod->package.count; i++) {
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001559 obj = &dod->package.elements[i];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001560
1561 if (obj->type != ACPI_TYPE_INTEGER) {
Len Brown64684632006-06-26 23:41:38 -04001562 printk(KERN_ERR PREFIX "Invalid _DOD data\n");
Len Brown4be44fc2005-08-05 00:44:28 -04001563 active_device_list[i].value.int_val =
1564 ACPI_VIDEO_HEAD_INVALID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001565 }
1566 active_device_list[i].value.int_val = obj->integer.value;
1567 active_device_list[i].bind_info = NULL;
Len Brown4be44fc2005-08-05 00:44:28 -04001568 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i,
1569 (int)obj->integer.value));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001570 count++;
1571 }
1572 active_device_list[count].value.int_val = ACPI_VIDEO_HEAD_END;
1573
Jesper Juhl6044ec82005-11-07 01:01:32 -08001574 kfree(video->attached_array);
Len Brown4be44fc2005-08-05 00:44:28 -04001575
Linus Torvalds1da177e2005-04-16 15:20:36 -07001576 video->attached_array = active_device_list;
1577 video->attached_count = count;
Len Brown4be44fc2005-08-05 00:44:28 -04001578 out:
Len Brown02438d82006-06-30 03:19:10 -04001579 kfree(buffer.pointer);
Patrick Mocheld550d982006-06-27 00:41:40 -04001580 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001581}
1582
1583/*
1584 * Arg:
1585 * video : video bus device
Julius Volz98fb8fe2007-02-20 16:38:40 +01001586 * event : notify event
Linus Torvalds1da177e2005-04-16 15:20:36 -07001587 *
1588 * Return:
1589 * < 0 : error
1590 *
1591 * 1. Find out the current active output device.
Julius Volz98fb8fe2007-02-20 16:38:40 +01001592 * 2. Identify the next output device to switch to.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001593 * 3. call _DSS to do actual switch.
Len Brown4be44fc2005-08-05 00:44:28 -04001594 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001595
Len Brown4be44fc2005-08-05 00:44:28 -04001596static int acpi_video_switch_output(struct acpi_video_bus *video, int event)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001597{
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001598 struct list_head *node;
Len Brown4be44fc2005-08-05 00:44:28 -04001599 struct acpi_video_device *dev = NULL;
1600 struct acpi_video_device *dev_next = NULL;
1601 struct acpi_video_device *dev_prev = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001602 unsigned long state;
1603 int status = 0;
1604
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -05001605 mutex_lock(&video->device_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001606
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001607 list_for_each(node, &video->video_device_list) {
Adrian Bunk73345712005-03-30 22:31:35 -05001608 dev = container_of(node, struct acpi_video_device, entry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001609 status = acpi_video_device_get_state(dev, &state);
Len Brown4be44fc2005-08-05 00:44:28 -04001610 if (state & 0x2) {
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001611 dev_next = container_of(node->next,
1612 struct acpi_video_device, entry);
1613 dev_prev = container_of(node->prev,
1614 struct acpi_video_device, entry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001615 goto out;
1616 }
1617 }
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001618
Linus Torvalds1da177e2005-04-16 15:20:36 -07001619 dev_next = container_of(node->next, struct acpi_video_device, entry);
1620 dev_prev = container_of(node->prev, struct acpi_video_device, entry);
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001621
1622 out:
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -05001623 mutex_unlock(&video->device_list_lock);
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001624
Linus Torvalds1da177e2005-04-16 15:20:36 -07001625 switch (event) {
1626 case ACPI_VIDEO_NOTIFY_CYCLE:
1627 case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT:
1628 acpi_video_device_set_state(dev, 0);
1629 acpi_video_device_set_state(dev_next, 0x80000001);
1630 break;
1631 case ACPI_VIDEO_NOTIFY_PREV_OUTPUT:
1632 acpi_video_device_set_state(dev, 0);
1633 acpi_video_device_set_state(dev_prev, 0x80000001);
1634 default:
1635 break;
1636 }
1637
Patrick Mocheld550d982006-06-27 00:41:40 -04001638 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001639}
1640
Len Brown4be44fc2005-08-05 00:44:28 -04001641static int
1642acpi_video_get_next_level(struct acpi_video_device *device,
1643 u32 level_current, u32 event)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001644{
Alexey Starikovskiy63f0edf2007-09-03 16:30:08 +04001645 int min, max, min_above, max_below, i, l, delta = 255;
Thomas Tuttlef4715182006-12-19 12:56:14 -08001646 max = max_below = 0;
1647 min = min_above = 255;
Alexey Starikovskiy63f0edf2007-09-03 16:30:08 +04001648 /* Find closest level to level_current */
1649 for (i = 0; i < device->brightness->count; i++) {
1650 l = device->brightness->levels[i];
1651 if (abs(l - level_current) < abs(delta)) {
1652 delta = l - level_current;
1653 if (!delta)
1654 break;
1655 }
1656 }
1657 /* Ajust level_current to closest available level */
1658 level_current += delta;
Thomas Tuttlef4715182006-12-19 12:56:14 -08001659 for (i = 0; i < device->brightness->count; i++) {
1660 l = device->brightness->levels[i];
1661 if (l < min)
1662 min = l;
1663 if (l > max)
1664 max = l;
1665 if (l < min_above && l > level_current)
1666 min_above = l;
1667 if (l > max_below && l < level_current)
1668 max_below = l;
1669 }
1670
1671 switch (event) {
1672 case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS:
1673 return (level_current < max) ? min_above : min;
1674 case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS:
1675 return (level_current < max) ? min_above : max;
1676 case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS:
1677 return (level_current > min) ? max_below : min;
1678 case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS:
1679 case ACPI_VIDEO_NOTIFY_DISPLAY_OFF:
1680 return 0;
1681 default:
1682 return level_current;
1683 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001684}
1685
Linus Torvalds1da177e2005-04-16 15:20:36 -07001686static void
Len Brown4be44fc2005-08-05 00:44:28 -04001687acpi_video_switch_brightness(struct acpi_video_device *device, int event)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001688{
1689 unsigned long level_current, level_next;
1690 acpi_video_device_lcd_get_level_current(device, &level_current);
1691 level_next = acpi_video_get_next_level(device, level_current, event);
1692 acpi_video_device_lcd_set_level(device, level_next);
1693}
1694
1695static int
Len Brown4be44fc2005-08-05 00:44:28 -04001696acpi_video_bus_get_devices(struct acpi_video_bus *video,
1697 struct acpi_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001698{
Len Brown4be44fc2005-08-05 00:44:28 -04001699 int status = 0;
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001700 struct acpi_device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001701
1702 acpi_video_device_enumerate(video);
1703
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001704 list_for_each_entry(dev, &device->children, node) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001705
1706 status = acpi_video_bus_get_one_device(dev, video);
1707 if (ACPI_FAILURE(status)) {
Thomas Renningera6fc6722006-06-26 23:58:43 -04001708 ACPI_EXCEPTION((AE_INFO, status, "Cant attach device"));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001709 continue;
1710 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001711 }
Patrick Mocheld550d982006-06-27 00:41:40 -04001712 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001713}
1714
Len Brown4be44fc2005-08-05 00:44:28 -04001715static int acpi_video_bus_put_one_device(struct acpi_video_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001716{
Karol Kozimor031ec772005-07-30 04:18:00 -04001717 acpi_status status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001718 struct acpi_video_bus *video;
1719
Linus Torvalds1da177e2005-04-16 15:20:36 -07001720
1721 if (!device || !device->video)
Patrick Mocheld550d982006-06-27 00:41:40 -04001722 return -ENOENT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001723
1724 video = device->video;
1725
Linus Torvalds1da177e2005-04-16 15:20:36 -07001726 acpi_video_device_remove_fs(device->dev);
1727
Patrick Mochel90130262006-05-19 16:54:48 -04001728 status = acpi_remove_notify_handler(device->dev->handle,
Len Brown4be44fc2005-08-05 00:44:28 -04001729 ACPI_DEVICE_NOTIFY,
1730 acpi_video_device_notify);
Richard Purdie599a52d2007-02-10 23:07:48 +00001731 backlight_device_unregister(device->backlight);
Luming Yu23b0f012007-05-09 21:07:05 +08001732 video_output_unregister(device->output_dev);
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001733
Patrick Mocheld550d982006-06-27 00:41:40 -04001734 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001735}
1736
Len Brown4be44fc2005-08-05 00:44:28 -04001737static int acpi_video_bus_put_devices(struct acpi_video_bus *video)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001738{
Len Brown4be44fc2005-08-05 00:44:28 -04001739 int status;
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001740 struct acpi_video_device *dev, *next;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001741
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -05001742 mutex_lock(&video->device_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001743
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001744 list_for_each_entry_safe(dev, next, &video->video_device_list, entry) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001745
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001746 status = acpi_video_bus_put_one_device(dev);
Len Brown4be44fc2005-08-05 00:44:28 -04001747 if (ACPI_FAILURE(status))
1748 printk(KERN_WARNING PREFIX
1749 "hhuuhhuu bug in acpi video driver.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001750
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001751 if (dev->brightness) {
1752 kfree(dev->brightness->levels);
1753 kfree(dev->brightness);
1754 }
1755 list_del(&dev->entry);
1756 kfree(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001757 }
1758
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -05001759 mutex_unlock(&video->device_list_lock);
Dmitry Torokhovff102ea2007-11-05 11:43:31 -05001760
Patrick Mocheld550d982006-06-27 00:41:40 -04001761 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001762}
1763
1764/* acpi_video interface */
1765
Len Brown4be44fc2005-08-05 00:44:28 -04001766static int acpi_video_bus_start_devices(struct acpi_video_bus *video)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001767{
Zhang Ruia21101c2007-09-14 11:46:22 +08001768 return acpi_video_bus_DOS(video, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001769}
1770
Len Brown4be44fc2005-08-05 00:44:28 -04001771static int acpi_video_bus_stop_devices(struct acpi_video_bus *video)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001772{
1773 return acpi_video_bus_DOS(video, 0, 1);
1774}
1775
Len Brown4be44fc2005-08-05 00:44:28 -04001776static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001777{
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001778 struct acpi_video_bus *video = data;
Len Brown4be44fc2005-08-05 00:44:28 -04001779 struct acpi_device *device = NULL;
Luming Yue9dab192007-08-20 18:23:53 +08001780 struct input_dev *input;
1781 int keycode;
1782
Linus Torvalds1da177e2005-04-16 15:20:36 -07001783 if (!video)
Patrick Mocheld550d982006-06-27 00:41:40 -04001784 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001785
Patrick Mochele6afa0d2006-05-19 16:54:40 -04001786 device = video->device;
Luming Yue9dab192007-08-20 18:23:53 +08001787 input = video->input;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001788
1789 switch (event) {
Julius Volz98fb8fe2007-02-20 16:38:40 +01001790 case ACPI_VIDEO_NOTIFY_SWITCH: /* User requested a switch,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001791 * most likely via hotkey. */
Len Brown14e04fb2007-08-23 15:20:26 -04001792 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001793 keycode = KEY_SWITCHVIDEOMODE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001794 break;
1795
Julius Volz98fb8fe2007-02-20 16:38:40 +01001796 case ACPI_VIDEO_NOTIFY_PROBE: /* User plugged in or removed a video
Linus Torvalds1da177e2005-04-16 15:20:36 -07001797 * connector. */
1798 acpi_video_device_enumerate(video);
1799 acpi_video_device_rebind(video);
1800 acpi_video_switch_output(video, event);
Len Brown14e04fb2007-08-23 15:20:26 -04001801 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001802 keycode = KEY_SWITCHVIDEOMODE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001803 break;
1804
Len Brown4be44fc2005-08-05 00:44:28 -04001805 case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed. */
Luming Yue9dab192007-08-20 18:23:53 +08001806 acpi_video_switch_output(video, event);
Len Brown25c87f72007-08-25 01:44:01 -04001807 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001808 keycode = KEY_SWITCHVIDEOMODE;
1809 break;
Len Brown4be44fc2005-08-05 00:44:28 -04001810 case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */
Luming Yue9dab192007-08-20 18:23:53 +08001811 acpi_video_switch_output(video, event);
Len Brown25c87f72007-08-25 01:44:01 -04001812 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001813 keycode = KEY_VIDEO_NEXT;
1814 break;
Len Brown4be44fc2005-08-05 00:44:28 -04001815 case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001816 acpi_video_switch_output(video, event);
Len Brown14e04fb2007-08-23 15:20:26 -04001817 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001818 keycode = KEY_VIDEO_PREV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001819 break;
1820
1821 default:
Luming Yue9dab192007-08-20 18:23:53 +08001822 keycode = KEY_UNKNOWN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001823 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
Len Brown4be44fc2005-08-05 00:44:28 -04001824 "Unsupported event [0x%x]\n", event));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001825 break;
1826 }
1827
Luming Yue9dab192007-08-20 18:23:53 +08001828 input_report_key(input, keycode, 1);
1829 input_sync(input);
1830 input_report_key(input, keycode, 0);
1831 input_sync(input);
1832
Patrick Mocheld550d982006-06-27 00:41:40 -04001833 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001834}
1835
Len Brown4be44fc2005-08-05 00:44:28 -04001836static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001837{
Jan Engelhardt50dd0962006-10-01 00:28:50 +02001838 struct acpi_video_device *video_device = data;
Len Brown4be44fc2005-08-05 00:44:28 -04001839 struct acpi_device *device = NULL;
Luming Yue9dab192007-08-20 18:23:53 +08001840 struct acpi_video_bus *bus;
1841 struct input_dev *input;
1842 int keycode;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001843
Linus Torvalds1da177e2005-04-16 15:20:36 -07001844 if (!video_device)
Patrick Mocheld550d982006-06-27 00:41:40 -04001845 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001846
Patrick Mochele6afa0d2006-05-19 16:54:40 -04001847 device = video_device->dev;
Luming Yue9dab192007-08-20 18:23:53 +08001848 bus = video_device->video;
1849 input = bus->input;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001850
1851 switch (event) {
Len Brown4be44fc2005-08-05 00:44:28 -04001852 case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */
Luming Yue9dab192007-08-20 18:23:53 +08001853 acpi_video_switch_brightness(video_device, event);
Len Brown25c87f72007-08-25 01:44:01 -04001854 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001855 keycode = KEY_BRIGHTNESS_CYCLE;
1856 break;
Len Brown4be44fc2005-08-05 00:44:28 -04001857 case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */
Luming Yue9dab192007-08-20 18:23:53 +08001858 acpi_video_switch_brightness(video_device, event);
Len Brown25c87f72007-08-25 01:44:01 -04001859 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001860 keycode = KEY_BRIGHTNESSUP;
1861 break;
Len Brown4be44fc2005-08-05 00:44:28 -04001862 case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */
Luming Yue9dab192007-08-20 18:23:53 +08001863 acpi_video_switch_brightness(video_device, event);
Len Brown25c87f72007-08-25 01:44:01 -04001864 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001865 keycode = KEY_BRIGHTNESSDOWN;
1866 break;
Len Brown4be44fc2005-08-05 00:44:28 -04001867 case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */
Luming Yue9dab192007-08-20 18:23:53 +08001868 acpi_video_switch_brightness(video_device, event);
Len Brown25c87f72007-08-25 01:44:01 -04001869 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001870 keycode = KEY_BRIGHTNESS_ZERO;
1871 break;
Len Brown4be44fc2005-08-05 00:44:28 -04001872 case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */
1873 acpi_video_switch_brightness(video_device, event);
Len Brown14e04fb2007-08-23 15:20:26 -04001874 acpi_bus_generate_proc_event(device, event, 0);
Luming Yue9dab192007-08-20 18:23:53 +08001875 keycode = KEY_DISPLAY_OFF;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001876 break;
1877 default:
Luming Yue9dab192007-08-20 18:23:53 +08001878 keycode = KEY_UNKNOWN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001879 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
Len Brown4be44fc2005-08-05 00:44:28 -04001880 "Unsupported event [0x%x]\n", event));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001881 break;
1882 }
Luming Yue9dab192007-08-20 18:23:53 +08001883
1884 input_report_key(input, keycode, 1);
1885 input_sync(input);
1886 input_report_key(input, keycode, 0);
1887 input_sync(input);
1888
Patrick Mocheld550d982006-06-27 00:41:40 -04001889 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001890}
1891
Zhang Ruie6d9da12007-08-25 02:23:31 -04001892static int instance;
Len Brown4be44fc2005-08-05 00:44:28 -04001893static int acpi_video_bus_add(struct acpi_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001894{
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05001895 acpi_status status;
1896 struct acpi_video_bus *video;
Luming Yue9dab192007-08-20 18:23:53 +08001897 struct input_dev *input;
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05001898 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001899
Burman Yan36bcbec2006-12-19 12:56:11 -08001900 video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001901 if (!video)
Patrick Mocheld550d982006-06-27 00:41:40 -04001902 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001903
Zhang Ruie6d9da12007-08-25 02:23:31 -04001904 /* a hack to fix the duplicate name "VID" problem on T61 */
1905 if (!strcmp(device->pnp.bus_id, "VID")) {
1906 if (instance)
1907 device->pnp.bus_id[3] = '0' + instance;
1908 instance ++;
1909 }
1910
Patrick Mochele6afa0d2006-05-19 16:54:40 -04001911 video->device = device;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001912 strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME);
1913 strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS);
1914 acpi_driver_data(device) = video;
1915
1916 acpi_video_bus_find_cap(video);
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05001917 error = acpi_video_bus_check(video);
1918 if (error)
1919 goto err_free_video;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001920
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05001921 error = acpi_video_bus_add_fs(device);
1922 if (error)
1923 goto err_free_video;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001924
Dmitry Torokhovbbac81f2007-11-05 11:43:32 -05001925 mutex_init(&video->device_list_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001926 INIT_LIST_HEAD(&video->video_device_list);
1927
1928 acpi_video_bus_get_devices(video, device);
1929 acpi_video_bus_start_devices(video);
1930
Patrick Mochel90130262006-05-19 16:54:48 -04001931 status = acpi_install_notify_handler(device->handle,
Len Brown4be44fc2005-08-05 00:44:28 -04001932 ACPI_DEVICE_NOTIFY,
1933 acpi_video_bus_notify, video);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001934 if (ACPI_FAILURE(status)) {
1935 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
Len Brown4be44fc2005-08-05 00:44:28 -04001936 "Error installing notify handler\n"));
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05001937 error = -ENODEV;
1938 goto err_stop_video;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001939 }
1940
Luming Yue9dab192007-08-20 18:23:53 +08001941 video->input = input = input_allocate_device();
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05001942 if (!input) {
1943 error = -ENOMEM;
1944 goto err_uninstall_notify;
1945 }
Luming Yue9dab192007-08-20 18:23:53 +08001946
1947 snprintf(video->phys, sizeof(video->phys),
1948 "%s/video/input0", acpi_device_hid(video->device));
1949
1950 input->name = acpi_device_name(video->device);
1951 input->phys = video->phys;
1952 input->id.bustype = BUS_HOST;
1953 input->id.product = 0x06;
Dmitry Torokhov91c05c62007-11-05 11:43:29 -05001954 input->dev.parent = &device->dev;
Luming Yue9dab192007-08-20 18:23:53 +08001955 input->evbit[0] = BIT(EV_KEY);
1956 set_bit(KEY_SWITCHVIDEOMODE, input->keybit);
1957 set_bit(KEY_VIDEO_NEXT, input->keybit);
1958 set_bit(KEY_VIDEO_PREV, input->keybit);
1959 set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit);
1960 set_bit(KEY_BRIGHTNESSUP, input->keybit);
1961 set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
1962 set_bit(KEY_BRIGHTNESS_ZERO, input->keybit);
1963 set_bit(KEY_DISPLAY_OFF, input->keybit);
1964 set_bit(KEY_UNKNOWN, input->keybit);
Luming Yue9dab192007-08-20 18:23:53 +08001965
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05001966 error = input_register_device(input);
1967 if (error)
1968 goto err_free_input_dev;
Luming Yue9dab192007-08-20 18:23:53 +08001969
Linus Torvalds1da177e2005-04-16 15:20:36 -07001970 printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n",
Len Brown4be44fc2005-08-05 00:44:28 -04001971 ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device),
1972 video->flags.multihead ? "yes" : "no",
1973 video->flags.rom ? "yes" : "no",
1974 video->flags.post ? "yes" : "no");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001975
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05001976 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001977
Dmitry Torokhovf51e8392007-11-05 11:43:30 -05001978 err_free_input_dev:
1979 input_free_device(input);
1980 err_uninstall_notify:
1981 acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
1982 acpi_video_bus_notify);
1983 err_stop_video:
1984 acpi_video_bus_stop_devices(video);
1985 acpi_video_bus_put_devices(video);
1986 kfree(video->attached_array);
1987 acpi_video_bus_remove_fs(device);
1988 err_free_video:
1989 kfree(video);
1990 acpi_driver_data(device) = NULL;
1991
1992 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001993}
1994
Len Brown4be44fc2005-08-05 00:44:28 -04001995static int acpi_video_bus_remove(struct acpi_device *device, int type)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001996{
Len Brown4be44fc2005-08-05 00:44:28 -04001997 acpi_status status = 0;
1998 struct acpi_video_bus *video = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001999
Linus Torvalds1da177e2005-04-16 15:20:36 -07002000
2001 if (!device || !acpi_driver_data(device))
Patrick Mocheld550d982006-06-27 00:41:40 -04002002 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002003
Jan Engelhardt50dd0962006-10-01 00:28:50 +02002004 video = acpi_driver_data(device);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002005
2006 acpi_video_bus_stop_devices(video);
2007
Patrick Mochel90130262006-05-19 16:54:48 -04002008 status = acpi_remove_notify_handler(video->device->handle,
Len Brown4be44fc2005-08-05 00:44:28 -04002009 ACPI_DEVICE_NOTIFY,
2010 acpi_video_bus_notify);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002011
2012 acpi_video_bus_put_devices(video);
2013 acpi_video_bus_remove_fs(device);
2014
Luming Yue9dab192007-08-20 18:23:53 +08002015 input_unregister_device(video->input);
Jesper Juhl6044ec82005-11-07 01:01:32 -08002016 kfree(video->attached_array);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002017 kfree(video);
2018
Patrick Mocheld550d982006-06-27 00:41:40 -04002019 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002020}
2021
Len Brown4be44fc2005-08-05 00:44:28 -04002022static int __init acpi_video_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002023{
Len Brown4be44fc2005-08-05 00:44:28 -04002024 int result = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002025
Linus Torvalds1da177e2005-04-16 15:20:36 -07002026
2027 /*
Len Brown4be44fc2005-08-05 00:44:28 -04002028 acpi_dbg_level = 0xFFFFFFFF;
2029 acpi_dbg_layer = 0x08000000;
2030 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002031
2032 acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir);
2033 if (!acpi_video_dir)
Patrick Mocheld550d982006-06-27 00:41:40 -04002034 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002035 acpi_video_dir->owner = THIS_MODULE;
2036
2037 result = acpi_bus_register_driver(&acpi_video_bus);
2038 if (result < 0) {
2039 remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir);
Patrick Mocheld550d982006-06-27 00:41:40 -04002040 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002041 }
2042
Patrick Mocheld550d982006-06-27 00:41:40 -04002043 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002044}
2045
Len Brown4be44fc2005-08-05 00:44:28 -04002046static void __exit acpi_video_exit(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002047{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002048
2049 acpi_bus_unregister_driver(&acpi_video_bus);
2050
2051 remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir);
2052
Patrick Mocheld550d982006-06-27 00:41:40 -04002053 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002054}
2055
2056module_init(acpi_video_init);
2057module_exit(acpi_video_exit);