Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 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> |
| 6 | * |
| 7 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or (at |
| 12 | * your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, but |
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License along |
| 20 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 21 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
| 22 | * |
| 23 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 24 | */ |
| 25 | |
| 26 | #include <linux/kernel.h> |
| 27 | #include <linux/module.h> |
| 28 | #include <linux/init.h> |
| 29 | #include <linux/types.h> |
| 30 | #include <linux/list.h> |
| 31 | #include <linux/proc_fs.h> |
| 32 | #include <linux/seq_file.h> |
| 33 | |
| 34 | #include <asm/uaccess.h> |
| 35 | |
| 36 | #include <acpi/acpi_bus.h> |
| 37 | #include <acpi/acpi_drivers.h> |
| 38 | |
| 39 | #define ACPI_VIDEO_COMPONENT 0x08000000 |
| 40 | #define ACPI_VIDEO_CLASS "video" |
| 41 | #define ACPI_VIDEO_DRIVER_NAME "ACPI Video Driver" |
| 42 | #define ACPI_VIDEO_BUS_NAME "Video Bus" |
| 43 | #define ACPI_VIDEO_DEVICE_NAME "Video Device" |
| 44 | #define ACPI_VIDEO_NOTIFY_SWITCH 0x80 |
| 45 | #define ACPI_VIDEO_NOTIFY_PROBE 0x81 |
| 46 | #define ACPI_VIDEO_NOTIFY_CYCLE 0x82 |
| 47 | #define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83 |
| 48 | #define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84 |
| 49 | |
| 50 | #define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x82 |
| 51 | #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x83 |
| 52 | #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x84 |
| 53 | #define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x85 |
| 54 | #define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x86 |
| 55 | |
| 56 | |
| 57 | #define ACPI_VIDEO_HEAD_INVALID (~0u - 1) |
| 58 | #define ACPI_VIDEO_HEAD_END (~0u) |
| 59 | |
| 60 | |
| 61 | #define _COMPONENT ACPI_VIDEO_COMPONENT |
| 62 | ACPI_MODULE_NAME ("acpi_video") |
| 63 | |
| 64 | MODULE_AUTHOR("Bruno Ducrot"); |
| 65 | MODULE_DESCRIPTION(ACPI_VIDEO_DRIVER_NAME); |
| 66 | MODULE_LICENSE("GPL"); |
| 67 | |
| 68 | static int acpi_video_bus_add (struct acpi_device *device); |
| 69 | static int acpi_video_bus_remove (struct acpi_device *device, int type); |
| 70 | static int acpi_video_bus_match (struct acpi_device *device, struct acpi_driver *driver); |
| 71 | |
| 72 | static struct acpi_driver acpi_video_bus = { |
| 73 | .name = ACPI_VIDEO_DRIVER_NAME, |
| 74 | .class = ACPI_VIDEO_CLASS, |
| 75 | .ops = { |
| 76 | .add = acpi_video_bus_add, |
| 77 | .remove = acpi_video_bus_remove, |
| 78 | .match = acpi_video_bus_match, |
| 79 | }, |
| 80 | }; |
| 81 | |
| 82 | struct acpi_video_bus_flags { |
| 83 | u8 multihead:1; /* can switch video heads */ |
| 84 | u8 rom:1; /* can retrieve a video rom */ |
| 85 | u8 post:1; /* can configure the head to */ |
| 86 | u8 reserved:5; |
| 87 | }; |
| 88 | |
| 89 | struct acpi_video_bus_cap { |
| 90 | u8 _DOS:1; /*Enable/Disable output switching*/ |
| 91 | u8 _DOD:1; /*Enumerate all devices attached to display adapter*/ |
| 92 | u8 _ROM:1; /*Get ROM Data*/ |
| 93 | u8 _GPD:1; /*Get POST Device*/ |
| 94 | u8 _SPD:1; /*Set POST Device*/ |
| 95 | u8 _VPO:1; /*Video POST Options*/ |
| 96 | u8 reserved:2; |
| 97 | }; |
| 98 | |
| 99 | struct acpi_video_device_attrib{ |
| 100 | u32 display_index:4; /* A zero-based instance of the Display*/ |
| 101 | u32 display_port_attachment:4; /*This field differenates displays type*/ |
| 102 | u32 display_type:4; /*Describe the specific type in use*/ |
| 103 | u32 vendor_specific:4; /*Chipset Vendor Specifi*/ |
| 104 | u32 bios_can_detect:1; /*BIOS can detect the device*/ |
| 105 | u32 depend_on_vga:1; /*Non-VGA output device whose power is related to |
| 106 | the VGA device.*/ |
| 107 | u32 pipe_id:3; /*For VGA multiple-head devices.*/ |
| 108 | u32 reserved:10; /*Must be 0*/ |
| 109 | u32 device_id_scheme:1; /*Device ID Scheme*/ |
| 110 | }; |
| 111 | |
| 112 | struct acpi_video_enumerated_device { |
| 113 | union { |
| 114 | u32 int_val; |
| 115 | struct acpi_video_device_attrib attrib; |
| 116 | } value; |
| 117 | struct acpi_video_device *bind_info; |
| 118 | }; |
| 119 | |
| 120 | struct acpi_video_bus { |
| 121 | acpi_handle handle; |
| 122 | u8 dos_setting; |
| 123 | struct acpi_video_enumerated_device *attached_array; |
| 124 | u8 attached_count; |
| 125 | struct acpi_video_bus_cap cap; |
| 126 | struct acpi_video_bus_flags flags; |
| 127 | struct semaphore sem; |
| 128 | struct list_head video_device_list; |
| 129 | struct proc_dir_entry *dir; |
| 130 | }; |
| 131 | |
| 132 | struct acpi_video_device_flags { |
| 133 | u8 crt:1; |
| 134 | u8 lcd:1; |
| 135 | u8 tvout:1; |
| 136 | u8 bios:1; |
| 137 | u8 unknown:1; |
| 138 | u8 reserved:3; |
| 139 | }; |
| 140 | |
| 141 | struct acpi_video_device_cap { |
| 142 | u8 _ADR:1; /*Return the unique ID */ |
| 143 | u8 _BCL:1; /*Query list of brightness control levels supported*/ |
| 144 | u8 _BCM:1; /*Set the brightness level*/ |
| 145 | u8 _DDC:1; /*Return the EDID for this device*/ |
| 146 | u8 _DCS:1; /*Return status of output device*/ |
| 147 | u8 _DGS:1; /*Query graphics state*/ |
| 148 | u8 _DSS:1; /*Device state set*/ |
| 149 | u8 _reserved:1; |
| 150 | }; |
| 151 | |
| 152 | struct acpi_video_device_brightness { |
| 153 | int curr; |
| 154 | int count; |
| 155 | int *levels; |
| 156 | }; |
| 157 | |
| 158 | struct acpi_video_device { |
| 159 | acpi_handle handle; |
| 160 | unsigned long device_id; |
| 161 | struct acpi_video_device_flags flags; |
| 162 | struct acpi_video_device_cap cap; |
| 163 | struct list_head entry; |
| 164 | struct acpi_video_bus *video; |
| 165 | struct acpi_device *dev; |
| 166 | struct acpi_video_device_brightness *brightness; |
| 167 | }; |
| 168 | |
| 169 | |
| 170 | /* bus */ |
| 171 | static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file); |
| 172 | static struct file_operations acpi_video_bus_info_fops = { |
| 173 | .open = acpi_video_bus_info_open_fs, |
| 174 | .read = seq_read, |
| 175 | .llseek = seq_lseek, |
| 176 | .release = single_release, |
| 177 | }; |
| 178 | |
| 179 | static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file); |
| 180 | static struct file_operations acpi_video_bus_ROM_fops = { |
| 181 | .open = acpi_video_bus_ROM_open_fs, |
| 182 | .read = seq_read, |
| 183 | .llseek = seq_lseek, |
| 184 | .release = single_release, |
| 185 | }; |
| 186 | |
| 187 | static int acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file); |
| 188 | static struct file_operations acpi_video_bus_POST_info_fops = { |
| 189 | .open = acpi_video_bus_POST_info_open_fs, |
| 190 | .read = seq_read, |
| 191 | .llseek = seq_lseek, |
| 192 | .release = single_release, |
| 193 | }; |
| 194 | |
| 195 | static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file); |
| 196 | static struct file_operations acpi_video_bus_POST_fops = { |
| 197 | .open = acpi_video_bus_POST_open_fs, |
| 198 | .read = seq_read, |
| 199 | .llseek = seq_lseek, |
| 200 | .release = single_release, |
| 201 | }; |
| 202 | |
| 203 | |
| 204 | static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file); |
| 205 | static struct file_operations acpi_video_bus_DOS_fops = { |
| 206 | .open = acpi_video_bus_DOS_open_fs, |
| 207 | .read = seq_read, |
| 208 | .llseek = seq_lseek, |
| 209 | .release = single_release, |
| 210 | }; |
| 211 | |
| 212 | /* device */ |
| 213 | static int acpi_video_device_info_open_fs(struct inode *inode, struct file *file); |
| 214 | static struct file_operations acpi_video_device_info_fops = { |
| 215 | .open = acpi_video_device_info_open_fs, |
| 216 | .read = seq_read, |
| 217 | .llseek = seq_lseek, |
| 218 | .release = single_release, |
| 219 | }; |
| 220 | |
| 221 | static int acpi_video_device_state_open_fs(struct inode *inode, struct file *file); |
| 222 | static struct file_operations acpi_video_device_state_fops = { |
| 223 | .open = acpi_video_device_state_open_fs, |
| 224 | .read = seq_read, |
| 225 | .llseek = seq_lseek, |
| 226 | .release = single_release, |
| 227 | }; |
| 228 | |
| 229 | static int acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file); |
| 230 | static struct file_operations acpi_video_device_brightness_fops = { |
| 231 | .open = acpi_video_device_brightness_open_fs, |
| 232 | .read = seq_read, |
| 233 | .llseek = seq_lseek, |
| 234 | .release = single_release, |
| 235 | }; |
| 236 | |
| 237 | static int acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file); |
| 238 | static struct file_operations acpi_video_device_EDID_fops = { |
| 239 | .open = acpi_video_device_EDID_open_fs, |
| 240 | .read = seq_read, |
| 241 | .llseek = seq_lseek, |
| 242 | .release = single_release, |
| 243 | }; |
| 244 | |
| 245 | static char device_decode[][30] = { |
| 246 | "motherboard VGA device", |
| 247 | "PCI VGA device", |
| 248 | "AGP VGA device", |
| 249 | "UNKNOWN", |
| 250 | }; |
| 251 | |
| 252 | static void acpi_video_device_notify ( acpi_handle handle, u32 event, void *data); |
| 253 | static void acpi_video_device_rebind( struct acpi_video_bus *video); |
| 254 | static void acpi_video_device_bind( struct acpi_video_bus *video, struct acpi_video_device *device); |
| 255 | static int acpi_video_device_enumerate(struct acpi_video_bus *video); |
| 256 | static int acpi_video_switch_output( struct acpi_video_bus *video, int event); |
| 257 | static int acpi_video_get_next_level( struct acpi_video_device *device, u32 level_current,u32 event); |
| 258 | static void acpi_video_switch_brightness ( struct acpi_video_device *device, int event); |
| 259 | |
| 260 | |
| 261 | /* -------------------------------------------------------------------------- |
| 262 | Video Management |
| 263 | -------------------------------------------------------------------------- */ |
| 264 | |
| 265 | /* device */ |
| 266 | |
| 267 | static int |
| 268 | acpi_video_device_query ( |
| 269 | struct acpi_video_device *device, |
| 270 | unsigned long *state) |
| 271 | { |
| 272 | int status; |
| 273 | ACPI_FUNCTION_TRACE("acpi_video_device_query"); |
| 274 | status = acpi_evaluate_integer(device->handle, "_DGS", NULL, state); |
| 275 | |
| 276 | return_VALUE(status); |
| 277 | } |
| 278 | |
| 279 | static int |
| 280 | acpi_video_device_get_state ( |
| 281 | struct acpi_video_device *device, |
| 282 | unsigned long *state) |
| 283 | { |
| 284 | int status; |
| 285 | |
| 286 | ACPI_FUNCTION_TRACE("acpi_video_device_get_state"); |
| 287 | |
| 288 | status = acpi_evaluate_integer(device->handle, "_DCS", NULL, state); |
| 289 | |
| 290 | return_VALUE(status); |
| 291 | } |
| 292 | |
| 293 | static int |
| 294 | acpi_video_device_set_state ( |
| 295 | struct acpi_video_device *device, |
| 296 | int state) |
| 297 | { |
| 298 | int status; |
| 299 | union acpi_object arg0 = {ACPI_TYPE_INTEGER}; |
| 300 | struct acpi_object_list args = {1, &arg0}; |
| 301 | |
| 302 | ACPI_FUNCTION_TRACE("acpi_video_device_set_state"); |
| 303 | |
| 304 | arg0.integer.value = state; |
| 305 | status = acpi_evaluate_integer(device->handle, "_DSS", &args, NULL); |
| 306 | |
| 307 | return_VALUE(status); |
| 308 | } |
| 309 | |
| 310 | static int |
| 311 | acpi_video_device_lcd_query_levels ( |
| 312 | struct acpi_video_device *device, |
| 313 | union acpi_object **levels) |
| 314 | { |
| 315 | int status; |
| 316 | struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; |
| 317 | union acpi_object *obj; |
| 318 | |
| 319 | |
| 320 | ACPI_FUNCTION_TRACE("acpi_video_device_lcd_query_levels"); |
| 321 | |
| 322 | *levels = NULL; |
| 323 | |
| 324 | status = acpi_evaluate_object(device->handle, "_BCL", NULL, &buffer); |
| 325 | if (!ACPI_SUCCESS(status)) |
| 326 | return_VALUE(status); |
| 327 | obj = (union acpi_object *) buffer.pointer; |
| 328 | if (!obj && (obj->type != ACPI_TYPE_PACKAGE)) { |
| 329 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _BCL data\n")); |
| 330 | status = -EFAULT; |
| 331 | goto err; |
| 332 | } |
| 333 | |
| 334 | *levels = obj; |
| 335 | |
| 336 | return_VALUE(0); |
| 337 | |
| 338 | err: |
| 339 | if (buffer.pointer) |
| 340 | kfree(buffer.pointer); |
| 341 | |
| 342 | return_VALUE(status); |
| 343 | } |
| 344 | |
| 345 | static int |
| 346 | acpi_video_device_lcd_set_level ( |
| 347 | struct acpi_video_device *device, |
| 348 | int level) |
| 349 | { |
| 350 | int status; |
| 351 | union acpi_object arg0 = {ACPI_TYPE_INTEGER}; |
| 352 | struct acpi_object_list args = {1, &arg0}; |
| 353 | |
| 354 | ACPI_FUNCTION_TRACE("acpi_video_device_lcd_set_level"); |
| 355 | |
| 356 | arg0.integer.value = level; |
| 357 | status = acpi_evaluate_object(device->handle, "_BCM", &args, NULL); |
| 358 | |
| 359 | printk(KERN_DEBUG "set_level status: %x\n", status); |
| 360 | return_VALUE(status); |
| 361 | } |
| 362 | |
| 363 | static int |
| 364 | acpi_video_device_lcd_get_level_current ( |
| 365 | struct acpi_video_device *device, |
| 366 | unsigned long *level) |
| 367 | { |
| 368 | int status; |
| 369 | ACPI_FUNCTION_TRACE("acpi_video_device_lcd_get_level_current"); |
| 370 | |
| 371 | status = acpi_evaluate_integer(device->handle, "_BQC", NULL, level); |
| 372 | |
| 373 | return_VALUE(status); |
| 374 | } |
| 375 | |
| 376 | static int |
| 377 | acpi_video_device_EDID ( |
| 378 | struct acpi_video_device *device, |
| 379 | union acpi_object **edid, |
| 380 | ssize_t length) |
| 381 | { |
| 382 | int status; |
| 383 | struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; |
| 384 | union acpi_object *obj; |
| 385 | union acpi_object arg0 = {ACPI_TYPE_INTEGER}; |
| 386 | struct acpi_object_list args = {1, &arg0}; |
| 387 | |
| 388 | ACPI_FUNCTION_TRACE("acpi_video_device_get_EDID"); |
| 389 | |
| 390 | *edid = NULL; |
| 391 | |
| 392 | if (!device) |
| 393 | return_VALUE(-ENODEV); |
| 394 | if (length == 128) |
| 395 | arg0.integer.value = 1; |
| 396 | else if (length == 256) |
| 397 | arg0.integer.value = 2; |
| 398 | else |
| 399 | return_VALUE(-EINVAL); |
| 400 | |
| 401 | status = acpi_evaluate_object(device->handle, "_DDC", &args, &buffer); |
| 402 | if (ACPI_FAILURE(status)) |
| 403 | return_VALUE(-ENODEV); |
| 404 | |
| 405 | obj = (union acpi_object *) buffer.pointer; |
| 406 | |
| 407 | if (obj && obj->type == ACPI_TYPE_BUFFER) |
| 408 | *edid = obj; |
| 409 | else { |
| 410 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _DDC data\n")); |
| 411 | status = -EFAULT; |
| 412 | kfree(obj); |
| 413 | } |
| 414 | |
| 415 | return_VALUE(status); |
| 416 | } |
| 417 | |
| 418 | |
| 419 | /* bus */ |
| 420 | |
| 421 | static int |
| 422 | acpi_video_bus_set_POST ( |
| 423 | struct acpi_video_bus *video, |
| 424 | unsigned long option) |
| 425 | { |
| 426 | int status; |
| 427 | unsigned long tmp; |
| 428 | union acpi_object arg0 = {ACPI_TYPE_INTEGER}; |
| 429 | struct acpi_object_list args = {1, &arg0}; |
| 430 | |
| 431 | ACPI_FUNCTION_TRACE("acpi_video_bus_set_POST"); |
| 432 | |
| 433 | arg0.integer.value = option; |
| 434 | |
| 435 | status = acpi_evaluate_integer(video->handle, "_SPD", &args, &tmp); |
| 436 | if (ACPI_SUCCESS(status)) |
| 437 | status = tmp ? (-EINVAL):(AE_OK); |
| 438 | |
| 439 | return_VALUE(status); |
| 440 | } |
| 441 | |
| 442 | static int |
| 443 | acpi_video_bus_get_POST ( |
| 444 | struct acpi_video_bus *video, |
| 445 | unsigned long *id) |
| 446 | { |
| 447 | int status; |
| 448 | |
| 449 | ACPI_FUNCTION_TRACE("acpi_video_bus_get_POST"); |
| 450 | |
| 451 | status = acpi_evaluate_integer(video->handle, "_GPD", NULL, id); |
| 452 | |
| 453 | return_VALUE(status); |
| 454 | } |
| 455 | |
| 456 | static int |
| 457 | acpi_video_bus_POST_options ( |
| 458 | struct acpi_video_bus *video, |
| 459 | unsigned long *options) |
| 460 | { |
| 461 | int status; |
| 462 | ACPI_FUNCTION_TRACE("acpi_video_bus_POST_options"); |
| 463 | |
| 464 | status = acpi_evaluate_integer(video->handle, "_VPO", NULL, options); |
| 465 | *options &= 3; |
| 466 | |
| 467 | return_VALUE(status); |
| 468 | } |
| 469 | |
| 470 | /* |
| 471 | * Arg: |
| 472 | * video : video bus device pointer |
| 473 | * bios_flag : |
| 474 | * 0. The system BIOS should NOT automatically switch(toggle) |
| 475 | * the active display output. |
| 476 | * 1. The system BIOS should automatically switch (toggle) the |
| 477 | * active display output. No swich event. |
| 478 | * 2. The _DGS value should be locked. |
| 479 | * 3. The system BIOS should not automatically switch (toggle) the |
| 480 | * active display output, but instead generate the display switch |
| 481 | * event notify code. |
| 482 | * lcd_flag : |
| 483 | * 0. The system BIOS should automatically control the brightness level |
| 484 | * of the LCD, when the power changes from AC to DC |
| 485 | * 1. The system BIOS should NOT automatically control the brightness |
| 486 | * level of the LCD, when the power changes from AC to DC. |
| 487 | * Return Value: |
| 488 | * -1 wrong arg. |
| 489 | */ |
| 490 | |
| 491 | static int |
| 492 | acpi_video_bus_DOS( |
| 493 | struct acpi_video_bus *video, |
| 494 | int bios_flag, |
| 495 | int lcd_flag) |
| 496 | { |
| 497 | acpi_integer status = 0; |
| 498 | union acpi_object arg0 = {ACPI_TYPE_INTEGER}; |
| 499 | struct acpi_object_list args = {1, &arg0}; |
| 500 | |
| 501 | ACPI_FUNCTION_TRACE("acpi_video_bus_DOS"); |
| 502 | |
| 503 | if (bios_flag < 0 || bios_flag >3 || lcd_flag < 0 || lcd_flag > 1){ |
| 504 | status = -1; |
| 505 | goto Failed; |
| 506 | } |
| 507 | arg0.integer.value = (lcd_flag << 2) | bios_flag; |
| 508 | video->dos_setting = arg0.integer.value; |
| 509 | acpi_evaluate_object(video->handle, "_DOS", &args, NULL); |
| 510 | |
| 511 | Failed: |
| 512 | return_VALUE(status); |
| 513 | } |
| 514 | |
| 515 | /* |
| 516 | * Arg: |
| 517 | * device : video output device (LCD, CRT, ..) |
| 518 | * |
| 519 | * Return Value: |
| 520 | * None |
| 521 | * |
| 522 | * Find out all required AML method defined under the output |
| 523 | * device. |
| 524 | */ |
| 525 | |
| 526 | static void |
| 527 | acpi_video_device_find_cap (struct acpi_video_device *device) |
| 528 | { |
| 529 | acpi_integer status; |
| 530 | acpi_handle h_dummy1; |
| 531 | int i; |
| 532 | union acpi_object *obj = NULL; |
| 533 | struct acpi_video_device_brightness *br = NULL; |
| 534 | |
| 535 | ACPI_FUNCTION_TRACE("acpi_video_device_find_cap"); |
| 536 | |
| 537 | memset( &device->cap, 0, 4); |
| 538 | |
| 539 | if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_ADR", &h_dummy1))) { |
| 540 | device->cap._ADR = 1; |
| 541 | } |
| 542 | if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_BCL", &h_dummy1))) { |
| 543 | device->cap._BCL= 1; |
| 544 | } |
| 545 | if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_BCM", &h_dummy1))) { |
| 546 | device->cap._BCM= 1; |
| 547 | } |
| 548 | if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_DDC", &h_dummy1))) { |
| 549 | device->cap._DDC= 1; |
| 550 | } |
| 551 | if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_DCS", &h_dummy1))) { |
| 552 | device->cap._DCS = 1; |
| 553 | } |
| 554 | if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_DGS", &h_dummy1))) { |
| 555 | device->cap._DGS = 1; |
| 556 | } |
| 557 | if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_DSS", &h_dummy1))) { |
| 558 | device->cap._DSS = 1; |
| 559 | } |
| 560 | |
| 561 | status = acpi_video_device_lcd_query_levels(device, &obj); |
| 562 | |
| 563 | if (obj && obj->type == ACPI_TYPE_PACKAGE && obj->package.count >= 2) { |
| 564 | int count = 0; |
| 565 | union acpi_object *o; |
| 566 | |
Paulo Marques | d1dd0c2 | 2005-03-30 22:39:49 -0500 | [diff] [blame] | 567 | br = kmalloc(sizeof(*br), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | if (!br) { |
| 569 | printk(KERN_ERR "can't allocate memory\n"); |
| 570 | } else { |
Paulo Marques | d1dd0c2 | 2005-03-30 22:39:49 -0500 | [diff] [blame] | 571 | memset(br, 0, sizeof(*br)); |
| 572 | br->levels = kmalloc(obj->package.count * |
| 573 | sizeof *(br->levels), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | if (!br->levels) |
| 575 | goto out; |
| 576 | |
| 577 | for (i = 0; i < obj->package.count; i++) { |
| 578 | o = (union acpi_object *) &obj->package.elements[i]; |
| 579 | if (o->type != ACPI_TYPE_INTEGER) { |
| 580 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid data\n")); |
| 581 | continue; |
| 582 | } |
| 583 | br->levels[count] = (u32) o->integer.value; |
| 584 | count++; |
| 585 | } |
| 586 | out: |
| 587 | if (count < 2) { |
Paulo Marques | d1dd0c2 | 2005-03-30 22:39:49 -0500 | [diff] [blame] | 588 | kfree(br->levels); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | kfree(br); |
| 590 | } else { |
| 591 | br->count = count; |
| 592 | device->brightness = br; |
| 593 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "found %d brightness levels\n", count)); |
| 594 | } |
| 595 | } |
| 596 | } |
| 597 | |
Paulo Marques | d1dd0c2 | 2005-03-30 22:39:49 -0500 | [diff] [blame] | 598 | kfree(obj); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | |
| 600 | return_VOID; |
| 601 | } |
| 602 | |
| 603 | /* |
| 604 | * Arg: |
| 605 | * device : video output device (VGA) |
| 606 | * |
| 607 | * Return Value: |
| 608 | * None |
| 609 | * |
| 610 | * Find out all required AML method defined under the video bus device. |
| 611 | */ |
| 612 | |
| 613 | static void |
| 614 | acpi_video_bus_find_cap (struct acpi_video_bus *video) |
| 615 | { |
| 616 | acpi_handle h_dummy1; |
| 617 | |
| 618 | memset(&video->cap ,0, 4); |
| 619 | if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_DOS", &h_dummy1))) { |
| 620 | video->cap._DOS = 1; |
| 621 | } |
| 622 | if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_DOD", &h_dummy1))) { |
| 623 | video->cap._DOD = 1; |
| 624 | } |
| 625 | if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_ROM", &h_dummy1))) { |
| 626 | video->cap._ROM = 1; |
| 627 | } |
| 628 | if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_GPD", &h_dummy1))) { |
| 629 | video->cap._GPD = 1; |
| 630 | } |
| 631 | if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_SPD", &h_dummy1))) { |
| 632 | video->cap._SPD = 1; |
| 633 | } |
| 634 | if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_VPO", &h_dummy1))) { |
| 635 | video->cap._VPO = 1; |
| 636 | } |
| 637 | } |
| 638 | |
| 639 | /* |
| 640 | * Check whether the video bus device has required AML method to |
| 641 | * support the desired features |
| 642 | */ |
| 643 | |
| 644 | static int |
| 645 | acpi_video_bus_check ( |
| 646 | struct acpi_video_bus *video) |
| 647 | { |
| 648 | acpi_status status = -ENOENT; |
| 649 | |
| 650 | |
| 651 | ACPI_FUNCTION_TRACE("acpi_video_bus_check"); |
| 652 | |
| 653 | if (!video) |
| 654 | return_VALUE(-EINVAL); |
| 655 | |
| 656 | /* Since there is no HID, CID and so on for VGA driver, we have |
| 657 | * to check well known required nodes. |
| 658 | */ |
| 659 | |
| 660 | /* Does this device able to support video switching ? */ |
| 661 | if(video->cap._DOS){ |
| 662 | video->flags.multihead = 1; |
| 663 | status = 0; |
| 664 | } |
| 665 | |
| 666 | /* Does this device able to retrieve a retrieve a video ROM ? */ |
| 667 | if(video->cap._ROM){ |
| 668 | video->flags.rom = 1; |
| 669 | status = 0; |
| 670 | } |
| 671 | |
| 672 | /* Does this device able to configure which video device to POST ? */ |
| 673 | if(video->cap._GPD && video->cap._SPD && video->cap._VPO){ |
| 674 | video->flags.post = 1; |
| 675 | status = 0; |
| 676 | } |
| 677 | |
| 678 | return_VALUE(status); |
| 679 | } |
| 680 | |
| 681 | /* -------------------------------------------------------------------------- |
| 682 | FS Interface (/proc) |
| 683 | -------------------------------------------------------------------------- */ |
| 684 | |
| 685 | static struct proc_dir_entry *acpi_video_dir; |
| 686 | |
| 687 | /* video devices */ |
| 688 | |
| 689 | static int |
| 690 | acpi_video_device_info_seq_show ( |
| 691 | struct seq_file *seq, |
| 692 | void *offset) |
| 693 | { |
| 694 | struct acpi_video_device *dev = (struct acpi_video_device *) seq->private; |
| 695 | |
| 696 | ACPI_FUNCTION_TRACE("acpi_video_device_info_seq_show"); |
| 697 | |
| 698 | if (!dev) |
| 699 | goto end; |
| 700 | |
| 701 | seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id); |
| 702 | seq_printf(seq, "type: "); |
| 703 | if (dev->flags.crt) |
| 704 | seq_printf(seq, "CRT\n"); |
| 705 | else if (dev->flags.lcd) |
| 706 | seq_printf(seq, "LCD\n"); |
| 707 | else if (dev->flags.tvout) |
| 708 | seq_printf(seq, "TVOUT\n"); |
| 709 | else |
| 710 | seq_printf(seq, "UNKNOWN\n"); |
| 711 | |
| 712 | seq_printf(seq,"known by bios: %s\n", |
| 713 | dev->flags.bios ? "yes":"no"); |
| 714 | |
| 715 | end: |
| 716 | return_VALUE(0); |
| 717 | } |
| 718 | |
| 719 | static int |
| 720 | acpi_video_device_info_open_fs ( |
| 721 | struct inode *inode, |
| 722 | struct file *file) |
| 723 | { |
| 724 | return single_open(file, acpi_video_device_info_seq_show, |
| 725 | PDE(inode)->data); |
| 726 | } |
| 727 | |
| 728 | static int |
| 729 | acpi_video_device_state_seq_show ( |
| 730 | struct seq_file *seq, |
| 731 | void *offset) |
| 732 | { |
| 733 | int status; |
| 734 | struct acpi_video_device *dev = (struct acpi_video_device *) seq->private; |
| 735 | unsigned long state; |
| 736 | |
| 737 | ACPI_FUNCTION_TRACE("acpi_video_device_state_seq_show"); |
| 738 | |
| 739 | if (!dev) |
| 740 | goto end; |
| 741 | |
| 742 | status = acpi_video_device_get_state(dev, &state); |
| 743 | seq_printf(seq, "state: "); |
| 744 | if (ACPI_SUCCESS(status)) |
| 745 | seq_printf(seq, "0x%02lx\n", state); |
| 746 | else |
| 747 | seq_printf(seq, "<not supported>\n"); |
| 748 | |
| 749 | status = acpi_video_device_query(dev, &state); |
| 750 | seq_printf(seq, "query: "); |
| 751 | if (ACPI_SUCCESS(status)) |
| 752 | seq_printf(seq, "0x%02lx\n", state); |
| 753 | else |
| 754 | seq_printf(seq, "<not supported>\n"); |
| 755 | |
| 756 | end: |
| 757 | return_VALUE(0); |
| 758 | } |
| 759 | |
| 760 | static int |
| 761 | acpi_video_device_state_open_fs ( |
| 762 | struct inode *inode, |
| 763 | struct file *file) |
| 764 | { |
| 765 | return single_open(file, acpi_video_device_state_seq_show, |
| 766 | PDE(inode)->data); |
| 767 | } |
| 768 | |
| 769 | static ssize_t |
| 770 | acpi_video_device_write_state ( |
| 771 | struct file *file, |
| 772 | const char __user *buffer, |
| 773 | size_t count, |
| 774 | loff_t *data) |
| 775 | { |
| 776 | int status; |
| 777 | struct seq_file *m = (struct seq_file *) file->private_data; |
| 778 | struct acpi_video_device *dev = (struct acpi_video_device *) m->private; |
| 779 | char str[12] = {0}; |
| 780 | u32 state = 0; |
| 781 | |
| 782 | ACPI_FUNCTION_TRACE("acpi_video_device_write_state"); |
| 783 | |
| 784 | if (!dev || count + 1 > sizeof str) |
| 785 | return_VALUE(-EINVAL); |
| 786 | |
| 787 | if (copy_from_user(str, buffer, count)) |
| 788 | return_VALUE(-EFAULT); |
| 789 | |
| 790 | str[count] = 0; |
| 791 | state = simple_strtoul(str, NULL, 0); |
| 792 | state &= ((1ul<<31) | (1ul<<30) | (1ul<<0)); |
| 793 | |
| 794 | status = acpi_video_device_set_state(dev, state); |
| 795 | |
| 796 | if (status) |
| 797 | return_VALUE(-EFAULT); |
| 798 | |
| 799 | return_VALUE(count); |
| 800 | } |
| 801 | |
| 802 | static int |
| 803 | acpi_video_device_brightness_seq_show ( |
| 804 | struct seq_file *seq, |
| 805 | void *offset) |
| 806 | { |
| 807 | struct acpi_video_device *dev = (struct acpi_video_device *) seq->private; |
| 808 | int i; |
| 809 | |
| 810 | ACPI_FUNCTION_TRACE("acpi_video_device_brightness_seq_show"); |
| 811 | |
| 812 | if (!dev || !dev->brightness) { |
| 813 | seq_printf(seq, "<not supported>\n"); |
| 814 | return_VALUE(0); |
| 815 | } |
| 816 | |
| 817 | seq_printf(seq, "levels: "); |
| 818 | for (i = 0; i < dev->brightness->count; i++) |
| 819 | seq_printf(seq, " %d", dev->brightness->levels[i]); |
| 820 | seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr); |
| 821 | |
| 822 | return_VALUE(0); |
| 823 | } |
| 824 | |
| 825 | static int |
| 826 | acpi_video_device_brightness_open_fs ( |
| 827 | struct inode *inode, |
| 828 | struct file *file) |
| 829 | { |
| 830 | return single_open(file, acpi_video_device_brightness_seq_show, |
| 831 | PDE(inode)->data); |
| 832 | } |
| 833 | |
| 834 | static ssize_t |
| 835 | acpi_video_device_write_brightness ( |
| 836 | struct file *file, |
| 837 | const char __user *buffer, |
| 838 | size_t count, |
| 839 | loff_t *data) |
| 840 | { |
| 841 | struct seq_file *m = (struct seq_file *) file->private_data; |
| 842 | struct acpi_video_device *dev = (struct acpi_video_device *) m->private; |
| 843 | char str[4] = {0}; |
| 844 | unsigned int level = 0; |
| 845 | int i; |
| 846 | |
| 847 | ACPI_FUNCTION_TRACE("acpi_video_device_write_brightness"); |
| 848 | |
| 849 | if (!dev || count + 1 > sizeof str) |
| 850 | return_VALUE(-EINVAL); |
| 851 | |
| 852 | if (copy_from_user(str, buffer, count)) |
| 853 | return_VALUE(-EFAULT); |
| 854 | |
| 855 | str[count] = 0; |
| 856 | level = simple_strtoul(str, NULL, 0); |
| 857 | |
| 858 | if (level > 100) |
| 859 | return_VALUE(-EFAULT); |
| 860 | |
| 861 | /* validate though the list of available levels */ |
| 862 | for (i = 0; i < dev->brightness->count; i++) |
| 863 | if (level == dev->brightness->levels[i]) { |
| 864 | if (ACPI_SUCCESS(acpi_video_device_lcd_set_level(dev, level))) |
| 865 | dev->brightness->curr = level; |
| 866 | break; |
| 867 | } |
| 868 | |
| 869 | return_VALUE(count); |
| 870 | } |
| 871 | |
| 872 | static int |
| 873 | acpi_video_device_EDID_seq_show ( |
| 874 | struct seq_file *seq, |
| 875 | void *offset) |
| 876 | { |
| 877 | struct acpi_video_device *dev = (struct acpi_video_device *) seq->private; |
| 878 | int status; |
| 879 | int i; |
| 880 | union acpi_object *edid = NULL; |
| 881 | |
| 882 | ACPI_FUNCTION_TRACE("acpi_video_device_EDID_seq_show"); |
| 883 | |
| 884 | if (!dev) |
| 885 | goto out; |
| 886 | |
| 887 | status = acpi_video_device_EDID (dev, &edid, 128); |
| 888 | if (ACPI_FAILURE(status)) { |
| 889 | status = acpi_video_device_EDID (dev, &edid, 256); |
| 890 | } |
| 891 | |
| 892 | if (ACPI_FAILURE(status)) { |
| 893 | goto out; |
| 894 | } |
| 895 | |
| 896 | if (edid && edid->type == ACPI_TYPE_BUFFER) { |
| 897 | for (i = 0; i < edid->buffer.length; i++) |
| 898 | seq_putc(seq, edid->buffer.pointer[i]); |
| 899 | } |
| 900 | |
| 901 | out: |
| 902 | if (!edid) |
| 903 | seq_printf(seq, "<not supported>\n"); |
| 904 | else |
| 905 | kfree(edid); |
| 906 | |
| 907 | return_VALUE(0); |
| 908 | } |
| 909 | |
| 910 | static int |
| 911 | acpi_video_device_EDID_open_fs ( |
| 912 | struct inode *inode, |
| 913 | struct file *file) |
| 914 | { |
| 915 | return single_open(file, acpi_video_device_EDID_seq_show, |
| 916 | PDE(inode)->data); |
| 917 | } |
| 918 | |
| 919 | |
| 920 | static int |
| 921 | acpi_video_device_add_fs ( |
| 922 | struct acpi_device *device) |
| 923 | { |
| 924 | struct proc_dir_entry *entry = NULL; |
| 925 | struct acpi_video_device *vid_dev; |
| 926 | |
| 927 | ACPI_FUNCTION_TRACE("acpi_video_device_add_fs"); |
| 928 | |
| 929 | if (!device) |
| 930 | return_VALUE(-ENODEV); |
| 931 | |
| 932 | vid_dev = (struct acpi_video_device *) acpi_driver_data(device); |
| 933 | if (!vid_dev) |
| 934 | return_VALUE(-ENODEV); |
| 935 | |
| 936 | if (!acpi_device_dir(device)) { |
| 937 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), |
| 938 | vid_dev->video->dir); |
| 939 | if (!acpi_device_dir(device)) |
| 940 | return_VALUE(-ENODEV); |
| 941 | acpi_device_dir(device)->owner = THIS_MODULE; |
| 942 | } |
| 943 | |
| 944 | /* 'info' [R] */ |
| 945 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); |
| 946 | if (!entry) |
| 947 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 948 | "Unable to create 'info' fs entry\n")); |
| 949 | else { |
| 950 | entry->proc_fops = &acpi_video_device_info_fops; |
| 951 | entry->data = acpi_driver_data(device); |
| 952 | entry->owner = THIS_MODULE; |
| 953 | } |
| 954 | |
| 955 | /* 'state' [R/W] */ |
| 956 | entry = create_proc_entry("state", S_IFREG|S_IRUGO|S_IWUSR, acpi_device_dir(device)); |
| 957 | if (!entry) |
| 958 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 959 | "Unable to create 'state' fs entry\n")); |
| 960 | else { |
| 961 | entry->proc_fops = &acpi_video_device_state_fops; |
| 962 | entry->proc_fops->write = acpi_video_device_write_state; |
| 963 | entry->data = acpi_driver_data(device); |
| 964 | entry->owner = THIS_MODULE; |
| 965 | } |
| 966 | |
| 967 | /* 'brightness' [R/W] */ |
| 968 | entry = create_proc_entry("brightness", S_IFREG|S_IRUGO|S_IWUSR, acpi_device_dir(device)); |
| 969 | if (!entry) |
| 970 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 971 | "Unable to create 'brightness' fs entry\n")); |
| 972 | else { |
| 973 | entry->proc_fops = &acpi_video_device_brightness_fops; |
| 974 | entry->proc_fops->write = acpi_video_device_write_brightness; |
| 975 | entry->data = acpi_driver_data(device); |
| 976 | entry->owner = THIS_MODULE; |
| 977 | } |
| 978 | |
| 979 | /* 'EDID' [R] */ |
| 980 | entry = create_proc_entry("EDID", S_IRUGO, acpi_device_dir(device)); |
| 981 | if (!entry) |
| 982 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 983 | "Unable to create 'brightness' fs entry\n")); |
| 984 | else { |
| 985 | entry->proc_fops = &acpi_video_device_EDID_fops; |
| 986 | entry->data = acpi_driver_data(device); |
| 987 | entry->owner = THIS_MODULE; |
| 988 | } |
| 989 | |
| 990 | return_VALUE(0); |
| 991 | } |
| 992 | |
| 993 | static int |
| 994 | acpi_video_device_remove_fs ( |
| 995 | struct acpi_device *device) |
| 996 | { |
| 997 | struct acpi_video_device *vid_dev; |
| 998 | ACPI_FUNCTION_TRACE("acpi_video_device_remove_fs"); |
| 999 | |
| 1000 | vid_dev = (struct acpi_video_device *) acpi_driver_data(device); |
| 1001 | if (!vid_dev || !vid_dev->video || !vid_dev->video->dir) |
| 1002 | return_VALUE(-ENODEV); |
| 1003 | |
| 1004 | if (acpi_device_dir(device)) { |
| 1005 | remove_proc_entry("info", acpi_device_dir(device)); |
| 1006 | remove_proc_entry("state", acpi_device_dir(device)); |
| 1007 | remove_proc_entry("brightness", acpi_device_dir(device)); |
| 1008 | remove_proc_entry("EDID", acpi_device_dir(device)); |
| 1009 | remove_proc_entry(acpi_device_bid(device), |
| 1010 | vid_dev->video->dir); |
| 1011 | acpi_device_dir(device) = NULL; |
| 1012 | } |
| 1013 | |
| 1014 | return_VALUE(0); |
| 1015 | } |
| 1016 | |
| 1017 | |
| 1018 | /* video bus */ |
| 1019 | static int |
| 1020 | acpi_video_bus_info_seq_show ( |
| 1021 | struct seq_file *seq, |
| 1022 | void *offset) |
| 1023 | { |
| 1024 | struct acpi_video_bus *video = (struct acpi_video_bus *) seq->private; |
| 1025 | |
| 1026 | ACPI_FUNCTION_TRACE("acpi_video_bus_info_seq_show"); |
| 1027 | |
| 1028 | if (!video) |
| 1029 | goto end; |
| 1030 | |
| 1031 | seq_printf(seq, "Switching heads: %s\n", |
| 1032 | video->flags.multihead ? "yes":"no"); |
| 1033 | seq_printf(seq, "Video ROM: %s\n", |
| 1034 | video->flags.rom ? "yes":"no"); |
| 1035 | seq_printf(seq, "Device to be POSTed on boot: %s\n", |
| 1036 | video->flags.post ? "yes":"no"); |
| 1037 | |
| 1038 | end: |
| 1039 | return_VALUE(0); |
| 1040 | } |
| 1041 | |
| 1042 | static int |
| 1043 | acpi_video_bus_info_open_fs ( |
| 1044 | struct inode *inode, |
| 1045 | struct file *file) |
| 1046 | { |
| 1047 | return single_open(file, acpi_video_bus_info_seq_show, PDE(inode)->data); |
| 1048 | } |
| 1049 | |
| 1050 | static int |
| 1051 | acpi_video_bus_ROM_seq_show ( |
| 1052 | struct seq_file *seq, |
| 1053 | void *offset) |
| 1054 | { |
| 1055 | struct acpi_video_bus *video = (struct acpi_video_bus *) seq->private; |
| 1056 | |
| 1057 | ACPI_FUNCTION_TRACE("acpi_video_bus_ROM_seq_show"); |
| 1058 | |
| 1059 | if (!video) |
| 1060 | goto end; |
| 1061 | |
| 1062 | printk(KERN_INFO PREFIX "Please implement %s\n", __FUNCTION__); |
| 1063 | seq_printf(seq, "<TODO>\n"); |
| 1064 | |
| 1065 | end: |
| 1066 | return_VALUE(0); |
| 1067 | } |
| 1068 | |
| 1069 | static int |
| 1070 | acpi_video_bus_ROM_open_fs ( |
| 1071 | struct inode *inode, |
| 1072 | struct file *file) |
| 1073 | { |
| 1074 | return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data); |
| 1075 | } |
| 1076 | |
| 1077 | static int |
| 1078 | acpi_video_bus_POST_info_seq_show ( |
| 1079 | struct seq_file *seq, |
| 1080 | void *offset) |
| 1081 | { |
| 1082 | struct acpi_video_bus *video = (struct acpi_video_bus *) seq->private; |
| 1083 | unsigned long options; |
| 1084 | int status; |
| 1085 | |
| 1086 | ACPI_FUNCTION_TRACE("acpi_video_bus_POST_info_seq_show"); |
| 1087 | |
| 1088 | if (!video) |
| 1089 | goto end; |
| 1090 | |
| 1091 | status = acpi_video_bus_POST_options(video, &options); |
| 1092 | if (ACPI_SUCCESS(status)) { |
| 1093 | if (!(options & 1)) { |
| 1094 | printk(KERN_WARNING PREFIX "The motherboard VGA device is not listed as a possible POST device.\n"); |
| 1095 | printk(KERN_WARNING PREFIX "This indicate a BIOS bug. Please contact the manufacturer.\n"); |
| 1096 | } |
| 1097 | printk("%lx\n", options); |
| 1098 | seq_printf(seq, "can POST: <intgrated video>"); |
| 1099 | if (options & 2) |
| 1100 | seq_printf(seq, " <PCI video>"); |
| 1101 | if (options & 4) |
| 1102 | seq_printf(seq, " <AGP video>"); |
| 1103 | seq_putc(seq, '\n'); |
| 1104 | } else |
| 1105 | seq_printf(seq, "<not supported>\n"); |
| 1106 | end: |
| 1107 | return_VALUE(0); |
| 1108 | } |
| 1109 | |
| 1110 | static int |
| 1111 | acpi_video_bus_POST_info_open_fs ( |
| 1112 | struct inode *inode, |
| 1113 | struct file *file) |
| 1114 | { |
| 1115 | return single_open(file, acpi_video_bus_POST_info_seq_show, PDE(inode)->data); |
| 1116 | } |
| 1117 | |
| 1118 | static int |
| 1119 | acpi_video_bus_POST_seq_show ( |
| 1120 | struct seq_file *seq, |
| 1121 | void *offset) |
| 1122 | { |
| 1123 | struct acpi_video_bus *video = (struct acpi_video_bus *) seq->private; |
| 1124 | int status; |
| 1125 | unsigned long id; |
| 1126 | |
| 1127 | ACPI_FUNCTION_TRACE("acpi_video_bus_POST_seq_show"); |
| 1128 | |
| 1129 | if (!video) |
| 1130 | goto end; |
| 1131 | |
| 1132 | status = acpi_video_bus_get_POST (video, &id); |
| 1133 | if (!ACPI_SUCCESS(status)) { |
| 1134 | seq_printf(seq, "<not supported>\n"); |
| 1135 | goto end; |
| 1136 | } |
| 1137 | seq_printf(seq, "device posted is <%s>\n", device_decode[id & 3]); |
| 1138 | |
| 1139 | end: |
| 1140 | return_VALUE(0); |
| 1141 | } |
| 1142 | |
| 1143 | static int |
| 1144 | acpi_video_bus_DOS_seq_show ( |
| 1145 | struct seq_file *seq, |
| 1146 | void *offset) |
| 1147 | { |
| 1148 | struct acpi_video_bus *video = (struct acpi_video_bus *) seq->private; |
| 1149 | |
| 1150 | ACPI_FUNCTION_TRACE("acpi_video_bus_DOS_seq_show"); |
| 1151 | |
| 1152 | seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting ); |
| 1153 | |
| 1154 | return_VALUE(0); |
| 1155 | } |
| 1156 | |
| 1157 | static int |
| 1158 | acpi_video_bus_POST_open_fs ( |
| 1159 | struct inode *inode, |
| 1160 | struct file *file) |
| 1161 | { |
| 1162 | return single_open(file, acpi_video_bus_POST_seq_show, PDE(inode)->data); |
| 1163 | } |
| 1164 | |
| 1165 | static int |
| 1166 | acpi_video_bus_DOS_open_fs ( |
| 1167 | struct inode *inode, |
| 1168 | struct file *file) |
| 1169 | { |
| 1170 | return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data); |
| 1171 | } |
| 1172 | |
| 1173 | static ssize_t |
| 1174 | acpi_video_bus_write_POST ( |
| 1175 | struct file *file, |
| 1176 | const char __user *buffer, |
| 1177 | size_t count, |
| 1178 | loff_t *data) |
| 1179 | { |
| 1180 | int status; |
| 1181 | struct seq_file *m = (struct seq_file *) file->private_data; |
| 1182 | struct acpi_video_bus *video = (struct acpi_video_bus *) m->private; |
| 1183 | char str[12] = {0}; |
| 1184 | unsigned long opt, options; |
| 1185 | |
| 1186 | ACPI_FUNCTION_TRACE("acpi_video_bus_write_POST"); |
| 1187 | |
| 1188 | |
| 1189 | if (!video || count + 1 > sizeof str) |
| 1190 | return_VALUE(-EINVAL); |
| 1191 | |
| 1192 | status = acpi_video_bus_POST_options(video, &options); |
| 1193 | if (!ACPI_SUCCESS(status)) |
| 1194 | return_VALUE(-EINVAL); |
| 1195 | |
| 1196 | if (copy_from_user(str, buffer, count)) |
| 1197 | return_VALUE(-EFAULT); |
| 1198 | |
| 1199 | str[count] = 0; |
| 1200 | opt = strtoul(str, NULL, 0); |
| 1201 | if (opt > 3) |
| 1202 | return_VALUE(-EFAULT); |
| 1203 | |
| 1204 | /* just in case an OEM 'forget' the motherboard... */ |
| 1205 | options |= 1; |
| 1206 | |
| 1207 | if (options & (1ul << opt)) { |
| 1208 | status = acpi_video_bus_set_POST (video, opt); |
| 1209 | if (!ACPI_SUCCESS(status)) |
| 1210 | return_VALUE(-EFAULT); |
| 1211 | |
| 1212 | } |
| 1213 | |
| 1214 | |
| 1215 | return_VALUE(count); |
| 1216 | } |
| 1217 | |
| 1218 | static ssize_t |
| 1219 | acpi_video_bus_write_DOS ( |
| 1220 | struct file *file, |
| 1221 | const char __user *buffer, |
| 1222 | size_t count, |
| 1223 | loff_t *data) |
| 1224 | { |
| 1225 | int status; |
| 1226 | struct seq_file *m = (struct seq_file *) file->private_data; |
| 1227 | struct acpi_video_bus *video = (struct acpi_video_bus *) m->private; |
| 1228 | char str[12] = {0}; |
| 1229 | unsigned long opt; |
| 1230 | |
| 1231 | ACPI_FUNCTION_TRACE("acpi_video_bus_write_DOS"); |
| 1232 | |
| 1233 | |
| 1234 | if (!video || count + 1 > sizeof str) |
| 1235 | return_VALUE(-EINVAL); |
| 1236 | |
| 1237 | if (copy_from_user(str, buffer, count)) |
| 1238 | return_VALUE(-EFAULT); |
| 1239 | |
| 1240 | str[count] = 0; |
| 1241 | opt = strtoul(str, NULL, 0); |
| 1242 | if (opt > 7) |
| 1243 | return_VALUE(-EFAULT); |
| 1244 | |
| 1245 | status = acpi_video_bus_DOS (video, opt & 0x3, (opt & 0x4)>>2); |
| 1246 | |
| 1247 | if (!ACPI_SUCCESS(status)) |
| 1248 | return_VALUE(-EFAULT); |
| 1249 | |
| 1250 | return_VALUE(count); |
| 1251 | } |
| 1252 | |
| 1253 | static int |
| 1254 | acpi_video_bus_add_fs ( |
| 1255 | struct acpi_device *device) |
| 1256 | { |
| 1257 | struct proc_dir_entry *entry = NULL; |
| 1258 | struct acpi_video_bus *video; |
| 1259 | |
| 1260 | ACPI_FUNCTION_TRACE("acpi_video_bus_add_fs"); |
| 1261 | |
| 1262 | video = (struct acpi_video_bus *) acpi_driver_data(device); |
| 1263 | |
| 1264 | if (!acpi_device_dir(device)) { |
| 1265 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), |
| 1266 | acpi_video_dir); |
| 1267 | if (!acpi_device_dir(device)) |
| 1268 | return_VALUE(-ENODEV); |
| 1269 | video->dir = acpi_device_dir(device); |
| 1270 | acpi_device_dir(device)->owner = THIS_MODULE; |
| 1271 | } |
| 1272 | |
| 1273 | /* 'info' [R] */ |
| 1274 | entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device)); |
| 1275 | if (!entry) |
| 1276 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to create 'info' fs entry\n")); |
| 1277 | else { |
| 1278 | entry->proc_fops = &acpi_video_bus_info_fops; |
| 1279 | entry->data = acpi_driver_data(device); |
| 1280 | entry->owner = THIS_MODULE; |
| 1281 | } |
| 1282 | |
| 1283 | /* 'ROM' [R] */ |
| 1284 | entry = create_proc_entry("ROM", S_IRUGO, acpi_device_dir(device)); |
| 1285 | if (!entry) |
| 1286 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to create 'ROM' fs entry\n")); |
| 1287 | else { |
| 1288 | entry->proc_fops = &acpi_video_bus_ROM_fops; |
| 1289 | entry->data = acpi_driver_data(device); |
| 1290 | entry->owner = THIS_MODULE; |
| 1291 | } |
| 1292 | |
| 1293 | /* 'POST_info' [R] */ |
| 1294 | entry = create_proc_entry("POST_info", S_IRUGO, acpi_device_dir(device)); |
| 1295 | if (!entry) |
| 1296 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to create 'POST_info' fs entry\n")); |
| 1297 | else { |
| 1298 | entry->proc_fops = &acpi_video_bus_POST_info_fops; |
| 1299 | entry->data = acpi_driver_data(device); |
| 1300 | entry->owner = THIS_MODULE; |
| 1301 | } |
| 1302 | |
| 1303 | /* 'POST' [R/W] */ |
| 1304 | entry = create_proc_entry("POST", S_IFREG|S_IRUGO|S_IRUSR, acpi_device_dir(device)); |
| 1305 | if (!entry) |
| 1306 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to create 'POST' fs entry\n")); |
| 1307 | else { |
| 1308 | entry->proc_fops = &acpi_video_bus_POST_fops; |
| 1309 | entry->proc_fops->write = acpi_video_bus_write_POST; |
| 1310 | entry->data = acpi_driver_data(device); |
| 1311 | entry->owner = THIS_MODULE; |
| 1312 | } |
| 1313 | |
| 1314 | /* 'DOS' [R/W] */ |
| 1315 | entry = create_proc_entry("DOS", S_IFREG|S_IRUGO|S_IRUSR, acpi_device_dir(device)); |
| 1316 | if (!entry) |
| 1317 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to create 'DOS' fs entry\n")); |
| 1318 | else { |
| 1319 | entry->proc_fops = &acpi_video_bus_DOS_fops; |
| 1320 | entry->proc_fops->write = acpi_video_bus_write_DOS; |
| 1321 | entry->data = acpi_driver_data(device); |
| 1322 | entry->owner = THIS_MODULE; |
| 1323 | } |
| 1324 | |
| 1325 | return_VALUE(0); |
| 1326 | } |
| 1327 | |
| 1328 | static int |
| 1329 | acpi_video_bus_remove_fs ( |
| 1330 | struct acpi_device *device) |
| 1331 | { |
| 1332 | struct acpi_video_bus *video; |
| 1333 | |
| 1334 | ACPI_FUNCTION_TRACE("acpi_video_bus_remove_fs"); |
| 1335 | |
| 1336 | video = (struct acpi_video_bus *) acpi_driver_data(device); |
| 1337 | |
| 1338 | if (acpi_device_dir(device)) { |
| 1339 | remove_proc_entry("info", acpi_device_dir(device)); |
| 1340 | remove_proc_entry("ROM", acpi_device_dir(device)); |
| 1341 | remove_proc_entry("POST_info", acpi_device_dir(device)); |
| 1342 | remove_proc_entry("POST", acpi_device_dir(device)); |
| 1343 | remove_proc_entry("DOS", acpi_device_dir(device)); |
| 1344 | remove_proc_entry(acpi_device_bid(device), |
| 1345 | acpi_video_dir); |
| 1346 | acpi_device_dir(device) = NULL; |
| 1347 | } |
| 1348 | |
| 1349 | return_VALUE(0); |
| 1350 | } |
| 1351 | |
| 1352 | /* -------------------------------------------------------------------------- |
| 1353 | Driver Interface |
| 1354 | -------------------------------------------------------------------------- */ |
| 1355 | |
| 1356 | /* device interface */ |
| 1357 | |
| 1358 | static int |
| 1359 | acpi_video_bus_get_one_device ( |
| 1360 | struct acpi_device *device, |
| 1361 | struct acpi_video_bus *video) |
| 1362 | { |
| 1363 | unsigned long device_id; |
| 1364 | int status, result; |
| 1365 | struct acpi_video_device *data; |
| 1366 | |
| 1367 | ACPI_FUNCTION_TRACE("acpi_video_bus_get_one_device"); |
| 1368 | |
| 1369 | if (!device || !video) |
| 1370 | return_VALUE(-EINVAL); |
| 1371 | |
| 1372 | status = acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id); |
| 1373 | if (ACPI_SUCCESS(status)) { |
| 1374 | |
| 1375 | data = kmalloc(sizeof(struct acpi_video_device), GFP_KERNEL); |
| 1376 | if (!data) |
| 1377 | return_VALUE(-ENOMEM); |
| 1378 | |
| 1379 | memset(data, 0, sizeof(struct acpi_video_device)); |
| 1380 | |
| 1381 | data->handle = device->handle; |
| 1382 | strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME); |
| 1383 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); |
| 1384 | acpi_driver_data(device) = data; |
| 1385 | |
| 1386 | data->device_id = device_id; |
| 1387 | data->video = video; |
| 1388 | data->dev = device; |
| 1389 | |
| 1390 | switch (device_id & 0xffff) { |
| 1391 | case 0x0100: |
| 1392 | data->flags.crt = 1; |
| 1393 | break; |
| 1394 | case 0x0400: |
| 1395 | data->flags.lcd = 1; |
| 1396 | break; |
| 1397 | case 0x0200: |
| 1398 | data->flags.tvout = 1; |
| 1399 | break; |
| 1400 | default: |
| 1401 | data->flags.unknown = 1; |
| 1402 | break; |
| 1403 | } |
| 1404 | |
| 1405 | acpi_video_device_bind(video, data); |
| 1406 | acpi_video_device_find_cap(data); |
| 1407 | |
| 1408 | status = acpi_install_notify_handler(data->handle, |
| 1409 | ACPI_DEVICE_NOTIFY, acpi_video_device_notify, data); |
| 1410 | if (ACPI_FAILURE(status)) { |
| 1411 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 1412 | "Error installing notify handler\n")); |
| 1413 | result = -ENODEV; |
| 1414 | goto end; |
| 1415 | } |
| 1416 | |
| 1417 | down(&video->sem); |
| 1418 | list_add_tail(&data->entry, &video->video_device_list); |
| 1419 | up(&video->sem); |
| 1420 | |
| 1421 | acpi_video_device_add_fs(device); |
| 1422 | |
| 1423 | return_VALUE(0); |
| 1424 | } |
| 1425 | |
| 1426 | end: |
| 1427 | return_VALUE(-ENOENT); |
| 1428 | } |
| 1429 | |
| 1430 | /* |
| 1431 | * Arg: |
| 1432 | * video : video bus device |
| 1433 | * |
| 1434 | * Return: |
| 1435 | * none |
| 1436 | * |
| 1437 | * Enumerate the video device list of the video bus, |
| 1438 | * bind the ids with the corresponding video devices |
| 1439 | * under the video bus. |
| 1440 | */ |
| 1441 | |
| 1442 | static void |
| 1443 | acpi_video_device_rebind( struct acpi_video_bus *video) |
| 1444 | { |
| 1445 | struct list_head * node, * next; |
| 1446 | list_for_each_safe(node, next, &video->video_device_list) { |
| 1447 | struct acpi_video_device * dev = container_of(node, struct acpi_video_device, entry); |
| 1448 | acpi_video_device_bind( video, dev); |
| 1449 | } |
| 1450 | } |
| 1451 | |
| 1452 | /* |
| 1453 | * Arg: |
| 1454 | * video : video bus device |
| 1455 | * device : video output device under the video |
| 1456 | * bus |
| 1457 | * |
| 1458 | * Return: |
| 1459 | * none |
| 1460 | * |
| 1461 | * Bind the ids with the corresponding video devices |
| 1462 | * under the video bus. |
| 1463 | */ |
| 1464 | |
| 1465 | static void |
| 1466 | acpi_video_device_bind( struct acpi_video_bus *video, |
| 1467 | struct acpi_video_device *device) |
| 1468 | { |
| 1469 | int i; |
| 1470 | ACPI_FUNCTION_TRACE("acpi_video_device_bind"); |
| 1471 | |
| 1472 | #define IDS_VAL(i) video->attached_array[i].value.int_val |
| 1473 | #define IDS_BIND(i) video->attached_array[i].bind_info |
| 1474 | |
| 1475 | for (i = 0; IDS_VAL(i) != ACPI_VIDEO_HEAD_INVALID && |
| 1476 | i < video->attached_count; i++) { |
| 1477 | if (device->device_id == (IDS_VAL(i)& 0xffff)) { |
| 1478 | IDS_BIND(i) = device; |
| 1479 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i)); |
| 1480 | } |
| 1481 | } |
| 1482 | #undef IDS_VAL |
| 1483 | #undef IDS_BIND |
| 1484 | } |
| 1485 | |
| 1486 | /* |
| 1487 | * Arg: |
| 1488 | * video : video bus device |
| 1489 | * |
| 1490 | * Return: |
| 1491 | * < 0 : error |
| 1492 | * |
| 1493 | * Call _DOD to enumerate all devices attached to display adapter |
| 1494 | * |
| 1495 | */ |
| 1496 | |
| 1497 | static int acpi_video_device_enumerate(struct acpi_video_bus *video) |
| 1498 | { |
| 1499 | int status; |
| 1500 | int count; |
| 1501 | int i; |
| 1502 | struct acpi_video_enumerated_device *active_device_list; |
| 1503 | struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; |
| 1504 | union acpi_object *dod = NULL; |
| 1505 | union acpi_object *obj; |
| 1506 | |
| 1507 | ACPI_FUNCTION_TRACE("acpi_video_device_enumerate"); |
| 1508 | |
| 1509 | status = acpi_evaluate_object(video->handle, "_DOD", NULL, &buffer); |
| 1510 | if (!ACPI_SUCCESS(status)) { |
| 1511 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating _DOD\n")); |
| 1512 | return_VALUE(status); |
| 1513 | } |
| 1514 | |
| 1515 | dod = (union acpi_object *) buffer.pointer; |
| 1516 | if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) { |
| 1517 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _DOD data\n")); |
| 1518 | status = -EFAULT; |
| 1519 | goto out; |
| 1520 | } |
| 1521 | |
| 1522 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n", |
| 1523 | dod->package.count)); |
| 1524 | |
| 1525 | active_device_list= kmalloc( |
| 1526 | (1+dod->package.count)*sizeof(struct acpi_video_enumerated_device), |
| 1527 | GFP_KERNEL); |
| 1528 | |
| 1529 | if (!active_device_list) { |
| 1530 | status = -ENOMEM; |
| 1531 | goto out; |
| 1532 | } |
| 1533 | |
| 1534 | count = 0; |
| 1535 | for (i = 0; i < dod->package.count; i++) { |
| 1536 | obj = (union acpi_object *) &dod->package.elements[i]; |
| 1537 | |
| 1538 | if (obj->type != ACPI_TYPE_INTEGER) { |
| 1539 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _DOD data\n")); |
| 1540 | active_device_list[i].value.int_val = ACPI_VIDEO_HEAD_INVALID; |
| 1541 | } |
| 1542 | active_device_list[i].value.int_val = obj->integer.value; |
| 1543 | active_device_list[i].bind_info = NULL; |
| 1544 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, (int) obj->integer.value)); |
| 1545 | count++; |
| 1546 | } |
| 1547 | active_device_list[count].value.int_val = ACPI_VIDEO_HEAD_END; |
| 1548 | |
| 1549 | if(video->attached_array) |
| 1550 | kfree(video->attached_array); |
| 1551 | |
| 1552 | video->attached_array = active_device_list; |
| 1553 | video->attached_count = count; |
| 1554 | out: |
| 1555 | acpi_os_free(buffer.pointer); |
| 1556 | return_VALUE(status); |
| 1557 | } |
| 1558 | |
| 1559 | /* |
| 1560 | * Arg: |
| 1561 | * video : video bus device |
| 1562 | * event : Nontify Event |
| 1563 | * |
| 1564 | * Return: |
| 1565 | * < 0 : error |
| 1566 | * |
| 1567 | * 1. Find out the current active output device. |
| 1568 | * 2. Identify the next output device to switch |
| 1569 | * 3. call _DSS to do actual switch. |
| 1570 | */ |
| 1571 | |
| 1572 | static int |
| 1573 | acpi_video_switch_output( |
| 1574 | struct acpi_video_bus *video, |
| 1575 | int event) |
| 1576 | { |
| 1577 | struct list_head * node, * next; |
| 1578 | struct acpi_video_device *dev=NULL; |
| 1579 | struct acpi_video_device *dev_next=NULL; |
| 1580 | struct acpi_video_device *dev_prev=NULL; |
| 1581 | unsigned long state; |
| 1582 | int status = 0; |
| 1583 | |
| 1584 | ACPI_FUNCTION_TRACE("acpi_video_switch_output"); |
| 1585 | |
| 1586 | list_for_each_safe(node, next, &video->video_device_list) { |
Adrian Bunk | 7334571 | 2005-03-30 22:31:35 -0500 | [diff] [blame] | 1587 | dev = container_of(node, struct acpi_video_device, entry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1588 | status = acpi_video_device_get_state(dev, &state); |
| 1589 | if (state & 0x2){ |
| 1590 | dev_next = container_of(node->next, struct acpi_video_device, entry); |
| 1591 | dev_prev = container_of(node->prev, struct acpi_video_device, entry); |
| 1592 | goto out; |
| 1593 | } |
| 1594 | } |
| 1595 | dev_next = container_of(node->next, struct acpi_video_device, entry); |
| 1596 | dev_prev = container_of(node->prev, struct acpi_video_device, entry); |
| 1597 | out: |
| 1598 | switch (event) { |
| 1599 | case ACPI_VIDEO_NOTIFY_CYCLE: |
| 1600 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: |
| 1601 | acpi_video_device_set_state(dev, 0); |
| 1602 | acpi_video_device_set_state(dev_next, 0x80000001); |
| 1603 | break; |
| 1604 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: |
| 1605 | acpi_video_device_set_state(dev, 0); |
| 1606 | acpi_video_device_set_state(dev_prev, 0x80000001); |
| 1607 | default: |
| 1608 | break; |
| 1609 | } |
| 1610 | |
| 1611 | return_VALUE(status); |
| 1612 | } |
| 1613 | |
| 1614 | static int |
| 1615 | acpi_video_get_next_level( |
| 1616 | struct acpi_video_device *device, |
| 1617 | u32 level_current, |
| 1618 | u32 event) |
| 1619 | { |
| 1620 | /*Fix me*/ |
| 1621 | return level_current; |
| 1622 | } |
| 1623 | |
| 1624 | |
| 1625 | static void |
| 1626 | acpi_video_switch_brightness ( |
| 1627 | struct acpi_video_device *device, |
| 1628 | int event) |
| 1629 | { |
| 1630 | unsigned long level_current, level_next; |
| 1631 | acpi_video_device_lcd_get_level_current(device, &level_current); |
| 1632 | level_next = acpi_video_get_next_level(device, level_current, event); |
| 1633 | acpi_video_device_lcd_set_level(device, level_next); |
| 1634 | } |
| 1635 | |
| 1636 | static int |
| 1637 | acpi_video_bus_get_devices ( |
| 1638 | struct acpi_video_bus *video, |
| 1639 | struct acpi_device *device) |
| 1640 | { |
| 1641 | int status = 0; |
| 1642 | struct list_head *node, *next; |
| 1643 | |
| 1644 | ACPI_FUNCTION_TRACE("acpi_video_get_devices"); |
| 1645 | |
| 1646 | acpi_video_device_enumerate(video); |
| 1647 | |
| 1648 | list_for_each_safe(node, next, &device->children) { |
| 1649 | struct acpi_device *dev = list_entry(node, struct acpi_device, node); |
| 1650 | |
| 1651 | if (!dev) |
| 1652 | continue; |
| 1653 | |
| 1654 | status = acpi_video_bus_get_one_device(dev, video); |
| 1655 | if (ACPI_FAILURE(status)) { |
| 1656 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Cant attach device\n")); |
| 1657 | continue; |
| 1658 | } |
| 1659 | |
| 1660 | } |
| 1661 | return_VALUE(status); |
| 1662 | } |
| 1663 | |
| 1664 | static int |
| 1665 | acpi_video_bus_put_one_device( |
| 1666 | struct acpi_video_device *device) |
| 1667 | { |
Karol Kozimor | 031ec77 | 2005-07-30 04:18:00 -0400 | [diff] [blame^] | 1668 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1669 | struct acpi_video_bus *video; |
| 1670 | |
| 1671 | ACPI_FUNCTION_TRACE("acpi_video_bus_put_one_device"); |
| 1672 | |
| 1673 | if (!device || !device->video) |
| 1674 | return_VALUE(-ENOENT); |
| 1675 | |
| 1676 | video = device->video; |
| 1677 | |
| 1678 | down(&video->sem); |
| 1679 | list_del(&device->entry); |
| 1680 | up(&video->sem); |
| 1681 | acpi_video_device_remove_fs(device->dev); |
| 1682 | |
Karol Kozimor | 031ec77 | 2005-07-30 04:18:00 -0400 | [diff] [blame^] | 1683 | status = acpi_remove_notify_handler(device->handle, |
| 1684 | ACPI_DEVICE_NOTIFY, acpi_video_device_notify); |
| 1685 | if (ACPI_FAILURE(status)) |
| 1686 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 1687 | "Error removing notify handler\n")); |
| 1688 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1689 | return_VALUE(0); |
| 1690 | } |
| 1691 | |
| 1692 | static int |
| 1693 | acpi_video_bus_put_devices ( |
| 1694 | struct acpi_video_bus *video) |
| 1695 | { |
| 1696 | int status; |
| 1697 | struct list_head *node, *next; |
| 1698 | |
| 1699 | ACPI_FUNCTION_TRACE("acpi_video_bus_put_devices"); |
| 1700 | |
| 1701 | list_for_each_safe(node, next, &video->video_device_list) { |
| 1702 | struct acpi_video_device *data = list_entry(node, struct acpi_video_device, entry); |
| 1703 | if (!data) |
| 1704 | continue; |
| 1705 | |
| 1706 | status = acpi_video_bus_put_one_device(data); |
| 1707 | if(ACPI_FAILURE(status)) |
| 1708 | printk(KERN_WARNING PREFIX "hhuuhhuu bug in acpi video driver.\n"); |
| 1709 | |
| 1710 | if (data->brightness) |
| 1711 | kfree(data->brightness); |
| 1712 | |
| 1713 | kfree(data); |
| 1714 | } |
| 1715 | |
| 1716 | return_VALUE(0); |
| 1717 | } |
| 1718 | |
| 1719 | /* acpi_video interface */ |
| 1720 | |
| 1721 | static int |
| 1722 | acpi_video_bus_start_devices( |
| 1723 | struct acpi_video_bus *video) |
| 1724 | { |
| 1725 | return acpi_video_bus_DOS(video, 1, 0); |
| 1726 | } |
| 1727 | |
| 1728 | static int |
| 1729 | acpi_video_bus_stop_devices( |
| 1730 | struct acpi_video_bus *video) |
| 1731 | { |
| 1732 | return acpi_video_bus_DOS(video, 0, 1); |
| 1733 | } |
| 1734 | |
| 1735 | static void |
| 1736 | acpi_video_bus_notify ( |
| 1737 | acpi_handle handle, |
| 1738 | u32 event, |
| 1739 | void *data) |
| 1740 | { |
| 1741 | struct acpi_video_bus *video = (struct acpi_video_bus *) data; |
| 1742 | struct acpi_device *device = NULL; |
| 1743 | |
| 1744 | ACPI_FUNCTION_TRACE("acpi_video_bus_notify"); |
| 1745 | printk("video bus notify\n"); |
| 1746 | |
| 1747 | if (!video) |
| 1748 | return_VOID; |
| 1749 | |
| 1750 | if (acpi_bus_get_device(handle, &device)) |
| 1751 | return_VOID; |
| 1752 | |
| 1753 | switch (event) { |
| 1754 | case ACPI_VIDEO_NOTIFY_SWITCH: /* User request that a switch occur, |
| 1755 | * most likely via hotkey. */ |
| 1756 | acpi_bus_generate_event(device, event, 0); |
| 1757 | break; |
| 1758 | |
| 1759 | case ACPI_VIDEO_NOTIFY_PROBE: /* User plug or remove a video |
| 1760 | * connector. */ |
| 1761 | acpi_video_device_enumerate(video); |
| 1762 | acpi_video_device_rebind(video); |
| 1763 | acpi_video_switch_output(video, event); |
| 1764 | acpi_bus_generate_event(device, event, 0); |
| 1765 | break; |
| 1766 | |
| 1767 | case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed.*/ |
| 1768 | case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */ |
| 1769 | case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */ |
| 1770 | acpi_video_switch_output(video, event); |
| 1771 | acpi_bus_generate_event(device, event, 0); |
| 1772 | break; |
| 1773 | |
| 1774 | default: |
| 1775 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
| 1776 | "Unsupported event [0x%x]\n", event)); |
| 1777 | break; |
| 1778 | } |
| 1779 | |
| 1780 | return_VOID; |
| 1781 | } |
| 1782 | |
| 1783 | static void |
| 1784 | acpi_video_device_notify ( |
| 1785 | acpi_handle handle, |
| 1786 | u32 event, |
| 1787 | void *data) |
| 1788 | { |
| 1789 | struct acpi_video_device *video_device = (struct acpi_video_device *) data; |
| 1790 | struct acpi_device *device = NULL; |
| 1791 | |
| 1792 | ACPI_FUNCTION_TRACE("acpi_video_device_notify"); |
| 1793 | |
| 1794 | printk("video device notify\n"); |
| 1795 | if (!video_device) |
| 1796 | return_VOID; |
| 1797 | |
| 1798 | if (acpi_bus_get_device(handle, &device)) |
| 1799 | return_VOID; |
| 1800 | |
| 1801 | switch (event) { |
| 1802 | case ACPI_VIDEO_NOTIFY_SWITCH: /* change in status (cycle output device) */ |
| 1803 | case ACPI_VIDEO_NOTIFY_PROBE: /* change in status (output device status) */ |
| 1804 | acpi_bus_generate_event(device, event, 0); |
| 1805 | break; |
| 1806 | case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */ |
| 1807 | case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */ |
| 1808 | case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */ |
| 1809 | case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */ |
| 1810 | case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */ |
| 1811 | acpi_video_switch_brightness (video_device, event); |
| 1812 | acpi_bus_generate_event(device, event, 0); |
| 1813 | break; |
| 1814 | default: |
| 1815 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
| 1816 | "Unsupported event [0x%x]\n", event)); |
| 1817 | break; |
| 1818 | } |
| 1819 | return_VOID; |
| 1820 | } |
| 1821 | |
| 1822 | static int |
| 1823 | acpi_video_bus_add ( |
| 1824 | struct acpi_device *device) |
| 1825 | { |
| 1826 | int result = 0; |
| 1827 | acpi_status status = 0; |
| 1828 | struct acpi_video_bus *video = NULL; |
| 1829 | |
| 1830 | ACPI_FUNCTION_TRACE("acpi_video_bus_add"); |
| 1831 | |
| 1832 | if (!device) |
| 1833 | return_VALUE(-EINVAL); |
| 1834 | |
| 1835 | video = kmalloc(sizeof(struct acpi_video_bus), GFP_KERNEL); |
| 1836 | if (!video) |
| 1837 | return_VALUE(-ENOMEM); |
| 1838 | memset(video, 0, sizeof(struct acpi_video_bus)); |
| 1839 | |
| 1840 | video->handle = device->handle; |
| 1841 | strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME); |
| 1842 | strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS); |
| 1843 | acpi_driver_data(device) = video; |
| 1844 | |
| 1845 | acpi_video_bus_find_cap(video); |
| 1846 | result = acpi_video_bus_check(video); |
| 1847 | if (result) |
| 1848 | goto end; |
| 1849 | |
| 1850 | result = acpi_video_bus_add_fs(device); |
| 1851 | if (result) |
| 1852 | goto end; |
| 1853 | |
| 1854 | init_MUTEX(&video->sem); |
| 1855 | INIT_LIST_HEAD(&video->video_device_list); |
| 1856 | |
| 1857 | acpi_video_bus_get_devices(video, device); |
| 1858 | acpi_video_bus_start_devices(video); |
| 1859 | |
| 1860 | status = acpi_install_notify_handler(video->handle, |
| 1861 | ACPI_DEVICE_NOTIFY, acpi_video_bus_notify, video); |
| 1862 | if (ACPI_FAILURE(status)) { |
| 1863 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 1864 | "Error installing notify handler\n")); |
| 1865 | result = -ENODEV; |
| 1866 | goto end; |
| 1867 | } |
| 1868 | |
| 1869 | printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n", |
| 1870 | ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device), |
| 1871 | video->flags.multihead ? "yes":"no", |
| 1872 | video->flags.rom ? "yes":"no", |
| 1873 | video->flags.post ? "yes":"no"); |
| 1874 | |
| 1875 | end: |
| 1876 | if (result) { |
| 1877 | acpi_video_bus_remove_fs(device); |
| 1878 | kfree(video); |
| 1879 | } |
| 1880 | |
| 1881 | return_VALUE(result); |
| 1882 | } |
| 1883 | |
| 1884 | static int |
| 1885 | acpi_video_bus_remove ( |
| 1886 | struct acpi_device *device, |
| 1887 | int type) |
| 1888 | { |
| 1889 | acpi_status status = 0; |
| 1890 | struct acpi_video_bus *video = NULL; |
| 1891 | |
| 1892 | ACPI_FUNCTION_TRACE("acpi_video_bus_remove"); |
| 1893 | |
| 1894 | if (!device || !acpi_driver_data(device)) |
| 1895 | return_VALUE(-EINVAL); |
| 1896 | |
| 1897 | video = (struct acpi_video_bus *) acpi_driver_data(device); |
| 1898 | |
| 1899 | acpi_video_bus_stop_devices(video); |
| 1900 | |
| 1901 | status = acpi_remove_notify_handler(video->handle, |
| 1902 | ACPI_DEVICE_NOTIFY, acpi_video_bus_notify); |
| 1903 | if (ACPI_FAILURE(status)) |
| 1904 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 1905 | "Error removing notify handler\n")); |
| 1906 | |
| 1907 | acpi_video_bus_put_devices(video); |
| 1908 | acpi_video_bus_remove_fs(device); |
| 1909 | |
| 1910 | if (video->attached_array) |
| 1911 | kfree(video->attached_array); |
| 1912 | kfree(video); |
| 1913 | |
| 1914 | return_VALUE(0); |
| 1915 | } |
| 1916 | |
| 1917 | |
| 1918 | static int |
| 1919 | acpi_video_bus_match ( |
| 1920 | struct acpi_device *device, |
| 1921 | struct acpi_driver *driver) |
| 1922 | { |
| 1923 | acpi_handle h_dummy1; |
| 1924 | acpi_handle h_dummy2; |
| 1925 | acpi_handle h_dummy3; |
| 1926 | |
| 1927 | ACPI_FUNCTION_TRACE("acpi_video_bus_match"); |
| 1928 | |
| 1929 | if (!device || !driver) |
| 1930 | return_VALUE(-EINVAL); |
| 1931 | |
| 1932 | /* Since there is no HID, CID for ACPI Video drivers, we have |
| 1933 | * to check well known required nodes for each feature we support. |
| 1934 | */ |
| 1935 | |
| 1936 | /* Does this device able to support video switching ? */ |
| 1937 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy1)) && |
| 1938 | ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy2))) |
| 1939 | return_VALUE(0); |
| 1940 | |
| 1941 | /* Does this device able to retrieve a video ROM ? */ |
| 1942 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy1))) |
| 1943 | return_VALUE(0); |
| 1944 | |
| 1945 | /* Does this device able to configure which video head to be POSTed ? */ |
| 1946 | if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy1)) && |
| 1947 | ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy2)) && |
| 1948 | ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy3))) |
| 1949 | return_VALUE(0); |
| 1950 | |
| 1951 | |
| 1952 | return_VALUE(-ENODEV); |
| 1953 | } |
| 1954 | |
| 1955 | |
| 1956 | static int __init |
| 1957 | acpi_video_init (void) |
| 1958 | { |
| 1959 | int result = 0; |
| 1960 | |
| 1961 | ACPI_FUNCTION_TRACE("acpi_video_init"); |
| 1962 | |
| 1963 | /* |
| 1964 | acpi_dbg_level = 0xFFFFFFFF; |
| 1965 | acpi_dbg_layer = 0x08000000; |
| 1966 | */ |
| 1967 | |
| 1968 | acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); |
| 1969 | if (!acpi_video_dir) |
| 1970 | return_VALUE(-ENODEV); |
| 1971 | acpi_video_dir->owner = THIS_MODULE; |
| 1972 | |
| 1973 | result = acpi_bus_register_driver(&acpi_video_bus); |
| 1974 | if (result < 0) { |
| 1975 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); |
| 1976 | return_VALUE(-ENODEV); |
| 1977 | } |
| 1978 | |
| 1979 | return_VALUE(0); |
| 1980 | } |
| 1981 | |
| 1982 | static void __exit |
| 1983 | acpi_video_exit (void) |
| 1984 | { |
| 1985 | ACPI_FUNCTION_TRACE("acpi_video_exit"); |
| 1986 | |
| 1987 | acpi_bus_unregister_driver(&acpi_video_bus); |
| 1988 | |
| 1989 | remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); |
| 1990 | |
| 1991 | return_VOID; |
| 1992 | } |
| 1993 | |
| 1994 | module_init(acpi_video_init); |
| 1995 | module_exit(acpi_video_exit); |