Thadeu Lima de Souza Cascardo | 529aa8c | 2009-12-21 16:20:01 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2009 Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along |
| 15 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 17 | */ |
| 18 | |
| 19 | |
| 20 | #include <linux/init.h> |
| 21 | #include <linux/module.h> |
| 22 | #include <linux/workqueue.h> |
| 23 | #include <acpi/acpi_drivers.h> |
| 24 | #include <linux/backlight.h> |
| 25 | #include <linux/input.h> |
| 26 | |
| 27 | MODULE_LICENSE("GPL"); |
| 28 | |
| 29 | |
| 30 | struct cmpc_accel { |
| 31 | int sensitivity; |
| 32 | }; |
| 33 | |
| 34 | #define CMPC_ACCEL_SENSITIVITY_DEFAULT 5 |
| 35 | |
| 36 | |
| 37 | /* |
| 38 | * Generic input device code. |
| 39 | */ |
| 40 | |
| 41 | typedef void (*input_device_init)(struct input_dev *dev); |
| 42 | |
| 43 | static int cmpc_add_acpi_notify_device(struct acpi_device *acpi, char *name, |
| 44 | input_device_init idev_init) |
| 45 | { |
| 46 | struct input_dev *inputdev; |
| 47 | int error; |
| 48 | |
| 49 | inputdev = input_allocate_device(); |
| 50 | if (!inputdev) |
| 51 | return -ENOMEM; |
| 52 | inputdev->name = name; |
| 53 | inputdev->dev.parent = &acpi->dev; |
| 54 | idev_init(inputdev); |
| 55 | error = input_register_device(inputdev); |
| 56 | if (error) { |
| 57 | input_free_device(inputdev); |
| 58 | return error; |
| 59 | } |
| 60 | dev_set_drvdata(&acpi->dev, inputdev); |
| 61 | return 0; |
| 62 | } |
| 63 | |
| 64 | static int cmpc_remove_acpi_notify_device(struct acpi_device *acpi) |
| 65 | { |
| 66 | struct input_dev *inputdev = dev_get_drvdata(&acpi->dev); |
| 67 | input_unregister_device(inputdev); |
| 68 | return 0; |
| 69 | } |
| 70 | |
| 71 | /* |
| 72 | * Accelerometer code. |
| 73 | */ |
| 74 | static acpi_status cmpc_start_accel(acpi_handle handle) |
| 75 | { |
| 76 | union acpi_object param[2]; |
| 77 | struct acpi_object_list input; |
| 78 | acpi_status status; |
| 79 | |
| 80 | param[0].type = ACPI_TYPE_INTEGER; |
| 81 | param[0].integer.value = 0x3; |
| 82 | param[1].type = ACPI_TYPE_INTEGER; |
| 83 | input.count = 2; |
| 84 | input.pointer = param; |
| 85 | status = acpi_evaluate_object(handle, "ACMD", &input, NULL); |
| 86 | return status; |
| 87 | } |
| 88 | |
| 89 | static acpi_status cmpc_stop_accel(acpi_handle handle) |
| 90 | { |
| 91 | union acpi_object param[2]; |
| 92 | struct acpi_object_list input; |
| 93 | acpi_status status; |
| 94 | |
| 95 | param[0].type = ACPI_TYPE_INTEGER; |
| 96 | param[0].integer.value = 0x4; |
| 97 | param[1].type = ACPI_TYPE_INTEGER; |
| 98 | input.count = 2; |
| 99 | input.pointer = param; |
| 100 | status = acpi_evaluate_object(handle, "ACMD", &input, NULL); |
| 101 | return status; |
| 102 | } |
| 103 | |
| 104 | static acpi_status cmpc_accel_set_sensitivity(acpi_handle handle, int val) |
| 105 | { |
| 106 | union acpi_object param[2]; |
| 107 | struct acpi_object_list input; |
| 108 | |
| 109 | param[0].type = ACPI_TYPE_INTEGER; |
| 110 | param[0].integer.value = 0x02; |
| 111 | param[1].type = ACPI_TYPE_INTEGER; |
| 112 | param[1].integer.value = val; |
| 113 | input.count = 2; |
| 114 | input.pointer = param; |
| 115 | return acpi_evaluate_object(handle, "ACMD", &input, NULL); |
| 116 | } |
| 117 | |
| 118 | static acpi_status cmpc_get_accel(acpi_handle handle, |
| 119 | unsigned char *x, |
| 120 | unsigned char *y, |
| 121 | unsigned char *z) |
| 122 | { |
| 123 | union acpi_object param[2]; |
| 124 | struct acpi_object_list input; |
| 125 | struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, 0 }; |
| 126 | unsigned char *locs; |
| 127 | acpi_status status; |
| 128 | |
| 129 | param[0].type = ACPI_TYPE_INTEGER; |
| 130 | param[0].integer.value = 0x01; |
| 131 | param[1].type = ACPI_TYPE_INTEGER; |
| 132 | input.count = 2; |
| 133 | input.pointer = param; |
| 134 | status = acpi_evaluate_object(handle, "ACMD", &input, &output); |
| 135 | if (ACPI_SUCCESS(status)) { |
| 136 | union acpi_object *obj; |
| 137 | obj = output.pointer; |
| 138 | locs = obj->buffer.pointer; |
| 139 | *x = locs[0]; |
| 140 | *y = locs[1]; |
| 141 | *z = locs[2]; |
| 142 | kfree(output.pointer); |
| 143 | } |
| 144 | return status; |
| 145 | } |
| 146 | |
| 147 | static void cmpc_accel_handler(struct acpi_device *dev, u32 event) |
| 148 | { |
| 149 | if (event == 0x81) { |
| 150 | unsigned char x, y, z; |
| 151 | acpi_status status; |
| 152 | |
| 153 | status = cmpc_get_accel(dev->handle, &x, &y, &z); |
| 154 | if (ACPI_SUCCESS(status)) { |
| 155 | struct input_dev *inputdev = dev_get_drvdata(&dev->dev); |
| 156 | |
| 157 | input_report_abs(inputdev, ABS_X, x); |
| 158 | input_report_abs(inputdev, ABS_Y, y); |
| 159 | input_report_abs(inputdev, ABS_Z, z); |
| 160 | input_sync(inputdev); |
| 161 | } |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | static ssize_t cmpc_accel_sensitivity_show(struct device *dev, |
| 166 | struct device_attribute *attr, |
| 167 | char *buf) |
| 168 | { |
| 169 | struct acpi_device *acpi; |
| 170 | struct input_dev *inputdev; |
| 171 | struct cmpc_accel *accel; |
| 172 | |
| 173 | acpi = to_acpi_device(dev); |
| 174 | inputdev = dev_get_drvdata(&acpi->dev); |
| 175 | accel = dev_get_drvdata(&inputdev->dev); |
| 176 | |
| 177 | return sprintf(buf, "%d\n", accel->sensitivity); |
| 178 | } |
| 179 | |
| 180 | static ssize_t cmpc_accel_sensitivity_store(struct device *dev, |
| 181 | struct device_attribute *attr, |
| 182 | const char *buf, size_t count) |
| 183 | { |
| 184 | struct acpi_device *acpi; |
| 185 | struct input_dev *inputdev; |
| 186 | struct cmpc_accel *accel; |
| 187 | unsigned long sensitivity; |
| 188 | int r; |
| 189 | |
| 190 | acpi = to_acpi_device(dev); |
| 191 | inputdev = dev_get_drvdata(&acpi->dev); |
| 192 | accel = dev_get_drvdata(&inputdev->dev); |
| 193 | |
| 194 | r = strict_strtoul(buf, 0, &sensitivity); |
| 195 | if (r) |
| 196 | return r; |
| 197 | |
| 198 | accel->sensitivity = sensitivity; |
| 199 | cmpc_accel_set_sensitivity(acpi->handle, sensitivity); |
| 200 | |
| 201 | return strnlen(buf, count); |
| 202 | } |
| 203 | |
| 204 | struct device_attribute cmpc_accel_sensitivity_attr = { |
| 205 | .attr = { .name = "sensitivity", .mode = 0660 }, |
| 206 | .show = cmpc_accel_sensitivity_show, |
| 207 | .store = cmpc_accel_sensitivity_store |
| 208 | }; |
| 209 | |
| 210 | static int cmpc_accel_open(struct input_dev *input) |
| 211 | { |
| 212 | struct acpi_device *acpi; |
| 213 | |
| 214 | acpi = to_acpi_device(input->dev.parent); |
| 215 | if (ACPI_SUCCESS(cmpc_start_accel(acpi->handle))) |
| 216 | return 0; |
| 217 | return -EIO; |
| 218 | } |
| 219 | |
| 220 | static void cmpc_accel_close(struct input_dev *input) |
| 221 | { |
| 222 | struct acpi_device *acpi; |
| 223 | |
| 224 | acpi = to_acpi_device(input->dev.parent); |
| 225 | cmpc_stop_accel(acpi->handle); |
| 226 | } |
| 227 | |
| 228 | static void cmpc_accel_idev_init(struct input_dev *inputdev) |
| 229 | { |
| 230 | set_bit(EV_ABS, inputdev->evbit); |
| 231 | input_set_abs_params(inputdev, ABS_X, 0, 255, 8, 0); |
| 232 | input_set_abs_params(inputdev, ABS_Y, 0, 255, 8, 0); |
| 233 | input_set_abs_params(inputdev, ABS_Z, 0, 255, 8, 0); |
| 234 | inputdev->open = cmpc_accel_open; |
| 235 | inputdev->close = cmpc_accel_close; |
| 236 | } |
| 237 | |
| 238 | static int cmpc_accel_add(struct acpi_device *acpi) |
| 239 | { |
| 240 | int error; |
| 241 | struct input_dev *inputdev; |
| 242 | struct cmpc_accel *accel; |
| 243 | |
| 244 | accel = kmalloc(sizeof(*accel), GFP_KERNEL); |
| 245 | if (!accel) |
| 246 | return -ENOMEM; |
| 247 | |
| 248 | accel->sensitivity = CMPC_ACCEL_SENSITIVITY_DEFAULT; |
| 249 | cmpc_accel_set_sensitivity(acpi->handle, accel->sensitivity); |
| 250 | |
| 251 | error = device_create_file(&acpi->dev, &cmpc_accel_sensitivity_attr); |
| 252 | if (error) |
| 253 | goto failed_file; |
| 254 | |
| 255 | error = cmpc_add_acpi_notify_device(acpi, "cmpc_accel", |
| 256 | cmpc_accel_idev_init); |
| 257 | if (error) |
| 258 | goto failed_input; |
| 259 | |
| 260 | inputdev = dev_get_drvdata(&acpi->dev); |
| 261 | dev_set_drvdata(&inputdev->dev, accel); |
| 262 | |
| 263 | return 0; |
| 264 | |
| 265 | failed_input: |
| 266 | device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr); |
| 267 | failed_file: |
| 268 | kfree(accel); |
| 269 | return error; |
| 270 | } |
| 271 | |
| 272 | static int cmpc_accel_remove(struct acpi_device *acpi, int type) |
| 273 | { |
| 274 | struct input_dev *inputdev; |
| 275 | struct cmpc_accel *accel; |
| 276 | |
| 277 | inputdev = dev_get_drvdata(&acpi->dev); |
| 278 | accel = dev_get_drvdata(&inputdev->dev); |
| 279 | |
| 280 | device_remove_file(&acpi->dev, &cmpc_accel_sensitivity_attr); |
| 281 | return cmpc_remove_acpi_notify_device(acpi); |
| 282 | } |
| 283 | |
| 284 | static const struct acpi_device_id cmpc_accel_device_ids[] = { |
| 285 | {"ACCE0000", 0}, |
| 286 | {"", 0} |
| 287 | }; |
| 288 | MODULE_DEVICE_TABLE(acpi, cmpc_accel_device_ids); |
| 289 | |
| 290 | static struct acpi_driver cmpc_accel_acpi_driver = { |
| 291 | .owner = THIS_MODULE, |
| 292 | .name = "cmpc_accel", |
| 293 | .class = "cmpc_accel", |
| 294 | .ids = cmpc_accel_device_ids, |
| 295 | .ops = { |
| 296 | .add = cmpc_accel_add, |
| 297 | .remove = cmpc_accel_remove, |
| 298 | .notify = cmpc_accel_handler, |
| 299 | } |
| 300 | }; |
| 301 | |
| 302 | |
| 303 | /* |
| 304 | * Tablet mode code. |
| 305 | */ |
| 306 | static acpi_status cmpc_get_tablet(acpi_handle handle, |
| 307 | unsigned long long *value) |
| 308 | { |
| 309 | union acpi_object param; |
| 310 | struct acpi_object_list input; |
| 311 | unsigned long long output; |
| 312 | acpi_status status; |
| 313 | |
| 314 | param.type = ACPI_TYPE_INTEGER; |
| 315 | param.integer.value = 0x01; |
| 316 | input.count = 1; |
| 317 | input.pointer = ¶m; |
| 318 | status = acpi_evaluate_integer(handle, "TCMD", &input, &output); |
| 319 | if (ACPI_SUCCESS(status)) |
| 320 | *value = output; |
| 321 | return status; |
| 322 | } |
| 323 | |
| 324 | static void cmpc_tablet_handler(struct acpi_device *dev, u32 event) |
| 325 | { |
| 326 | unsigned long long val = 0; |
| 327 | struct input_dev *inputdev = dev_get_drvdata(&dev->dev); |
| 328 | |
| 329 | if (event == 0x81) { |
| 330 | if (ACPI_SUCCESS(cmpc_get_tablet(dev->handle, &val))) |
| 331 | input_report_switch(inputdev, SW_TABLET_MODE, !val); |
| 332 | } |
| 333 | } |
| 334 | |
| 335 | static void cmpc_tablet_idev_init(struct input_dev *inputdev) |
| 336 | { |
| 337 | unsigned long long val = 0; |
| 338 | struct acpi_device *acpi; |
| 339 | |
| 340 | set_bit(EV_SW, inputdev->evbit); |
| 341 | set_bit(SW_TABLET_MODE, inputdev->swbit); |
| 342 | |
| 343 | acpi = to_acpi_device(inputdev->dev.parent); |
| 344 | if (ACPI_SUCCESS(cmpc_get_tablet(acpi->handle, &val))) |
| 345 | input_report_switch(inputdev, SW_TABLET_MODE, !val); |
| 346 | } |
| 347 | |
| 348 | static int cmpc_tablet_add(struct acpi_device *acpi) |
| 349 | { |
| 350 | return cmpc_add_acpi_notify_device(acpi, "cmpc_tablet", |
| 351 | cmpc_tablet_idev_init); |
| 352 | } |
| 353 | |
| 354 | static int cmpc_tablet_remove(struct acpi_device *acpi, int type) |
| 355 | { |
| 356 | return cmpc_remove_acpi_notify_device(acpi); |
| 357 | } |
| 358 | |
| 359 | static int cmpc_tablet_resume(struct acpi_device *acpi) |
| 360 | { |
| 361 | struct input_dev *inputdev = dev_get_drvdata(&acpi->dev); |
| 362 | unsigned long long val = 0; |
| 363 | if (ACPI_SUCCESS(cmpc_get_tablet(acpi->handle, &val))) |
| 364 | input_report_switch(inputdev, SW_TABLET_MODE, !val); |
| 365 | return 0; |
| 366 | } |
| 367 | |
| 368 | static const struct acpi_device_id cmpc_tablet_device_ids[] = { |
| 369 | {"TBLT0000", 0}, |
| 370 | {"", 0} |
| 371 | }; |
| 372 | MODULE_DEVICE_TABLE(acpi, cmpc_tablet_device_ids); |
| 373 | |
| 374 | static struct acpi_driver cmpc_tablet_acpi_driver = { |
| 375 | .owner = THIS_MODULE, |
| 376 | .name = "cmpc_tablet", |
| 377 | .class = "cmpc_tablet", |
| 378 | .ids = cmpc_tablet_device_ids, |
| 379 | .ops = { |
| 380 | .add = cmpc_tablet_add, |
| 381 | .remove = cmpc_tablet_remove, |
| 382 | .resume = cmpc_tablet_resume, |
| 383 | .notify = cmpc_tablet_handler, |
| 384 | } |
| 385 | }; |
| 386 | |
| 387 | |
| 388 | /* |
| 389 | * Backlight code. |
| 390 | */ |
| 391 | |
| 392 | static acpi_status cmpc_get_brightness(acpi_handle handle, |
| 393 | unsigned long long *value) |
| 394 | { |
| 395 | union acpi_object param; |
| 396 | struct acpi_object_list input; |
| 397 | unsigned long long output; |
| 398 | acpi_status status; |
| 399 | |
| 400 | param.type = ACPI_TYPE_INTEGER; |
| 401 | param.integer.value = 0xC0; |
| 402 | input.count = 1; |
| 403 | input.pointer = ¶m; |
| 404 | status = acpi_evaluate_integer(handle, "GRDI", &input, &output); |
| 405 | if (ACPI_SUCCESS(status)) |
| 406 | *value = output; |
| 407 | return status; |
| 408 | } |
| 409 | |
| 410 | static acpi_status cmpc_set_brightness(acpi_handle handle, |
| 411 | unsigned long long value) |
| 412 | { |
| 413 | union acpi_object param[2]; |
| 414 | struct acpi_object_list input; |
| 415 | acpi_status status; |
| 416 | unsigned long long output; |
| 417 | |
| 418 | param[0].type = ACPI_TYPE_INTEGER; |
| 419 | param[0].integer.value = 0xC0; |
| 420 | param[1].type = ACPI_TYPE_INTEGER; |
| 421 | param[1].integer.value = value; |
| 422 | input.count = 2; |
| 423 | input.pointer = param; |
| 424 | status = acpi_evaluate_integer(handle, "GWRI", &input, &output); |
| 425 | return status; |
| 426 | } |
| 427 | |
| 428 | static int cmpc_bl_get_brightness(struct backlight_device *bd) |
| 429 | { |
| 430 | acpi_status status; |
| 431 | acpi_handle handle; |
| 432 | unsigned long long brightness; |
| 433 | |
| 434 | handle = bl_get_data(bd); |
| 435 | status = cmpc_get_brightness(handle, &brightness); |
| 436 | if (ACPI_SUCCESS(status)) |
| 437 | return brightness; |
| 438 | else |
| 439 | return -1; |
| 440 | } |
| 441 | |
| 442 | static int cmpc_bl_update_status(struct backlight_device *bd) |
| 443 | { |
| 444 | acpi_status status; |
| 445 | acpi_handle handle; |
| 446 | |
| 447 | handle = bl_get_data(bd); |
| 448 | status = cmpc_set_brightness(handle, bd->props.brightness); |
| 449 | if (ACPI_SUCCESS(status)) |
| 450 | return 0; |
| 451 | else |
| 452 | return -1; |
| 453 | } |
| 454 | |
| 455 | static struct backlight_ops cmpc_bl_ops = { |
| 456 | .get_brightness = cmpc_bl_get_brightness, |
| 457 | .update_status = cmpc_bl_update_status |
| 458 | }; |
| 459 | |
| 460 | static int cmpc_bl_add(struct acpi_device *acpi) |
| 461 | { |
| 462 | struct backlight_device *bd; |
| 463 | |
| 464 | bd = backlight_device_register("cmpc_bl", &acpi->dev, |
| 465 | acpi->handle, &cmpc_bl_ops); |
| 466 | bd->props.max_brightness = 7; |
| 467 | dev_set_drvdata(&acpi->dev, bd); |
| 468 | return 0; |
| 469 | } |
| 470 | |
| 471 | static int cmpc_bl_remove(struct acpi_device *acpi, int type) |
| 472 | { |
| 473 | struct backlight_device *bd; |
| 474 | |
| 475 | bd = dev_get_drvdata(&acpi->dev); |
| 476 | backlight_device_unregister(bd); |
| 477 | return 0; |
| 478 | } |
| 479 | |
| 480 | static const struct acpi_device_id cmpc_device_ids[] = { |
| 481 | {"IPML200", 0}, |
| 482 | {"", 0} |
| 483 | }; |
| 484 | MODULE_DEVICE_TABLE(acpi, cmpc_device_ids); |
| 485 | |
| 486 | static struct acpi_driver cmpc_bl_acpi_driver = { |
| 487 | .owner = THIS_MODULE, |
| 488 | .name = "cmpc", |
| 489 | .class = "cmpc", |
| 490 | .ids = cmpc_device_ids, |
| 491 | .ops = { |
| 492 | .add = cmpc_bl_add, |
| 493 | .remove = cmpc_bl_remove |
| 494 | } |
| 495 | }; |
| 496 | |
| 497 | |
| 498 | /* |
| 499 | * Extra keys code. |
| 500 | */ |
| 501 | static int cmpc_keys_codes[] = { |
| 502 | KEY_UNKNOWN, |
| 503 | KEY_WLAN, |
| 504 | KEY_SWITCHVIDEOMODE, |
| 505 | KEY_BRIGHTNESSDOWN, |
| 506 | KEY_BRIGHTNESSUP, |
| 507 | KEY_VENDOR, |
| 508 | KEY_MAX |
| 509 | }; |
| 510 | |
| 511 | static void cmpc_keys_handler(struct acpi_device *dev, u32 event) |
| 512 | { |
| 513 | struct input_dev *inputdev; |
| 514 | int code = KEY_MAX; |
| 515 | |
| 516 | if ((event & 0x0F) < ARRAY_SIZE(cmpc_keys_codes)) |
| 517 | code = cmpc_keys_codes[event & 0x0F]; |
| 518 | inputdev = dev_get_drvdata(&dev->dev);; |
| 519 | input_report_key(inputdev, code, !(event & 0x10)); |
| 520 | } |
| 521 | |
| 522 | static void cmpc_keys_idev_init(struct input_dev *inputdev) |
| 523 | { |
| 524 | int i; |
| 525 | |
| 526 | set_bit(EV_KEY, inputdev->evbit); |
| 527 | for (i = 0; cmpc_keys_codes[i] != KEY_MAX; i++) |
| 528 | set_bit(cmpc_keys_codes[i], inputdev->keybit); |
| 529 | } |
| 530 | |
| 531 | static int cmpc_keys_add(struct acpi_device *acpi) |
| 532 | { |
| 533 | return cmpc_add_acpi_notify_device(acpi, "cmpc_keys", |
| 534 | cmpc_keys_idev_init); |
| 535 | } |
| 536 | |
| 537 | static int cmpc_keys_remove(struct acpi_device *acpi, int type) |
| 538 | { |
| 539 | return cmpc_remove_acpi_notify_device(acpi); |
| 540 | } |
| 541 | |
| 542 | static const struct acpi_device_id cmpc_keys_device_ids[] = { |
| 543 | {"FnBT0000", 0}, |
| 544 | {"", 0} |
| 545 | }; |
| 546 | MODULE_DEVICE_TABLE(acpi, cmpc_keys_device_ids); |
| 547 | |
| 548 | static struct acpi_driver cmpc_keys_acpi_driver = { |
| 549 | .owner = THIS_MODULE, |
| 550 | .name = "cmpc_keys", |
| 551 | .class = "cmpc_keys", |
| 552 | .ids = cmpc_keys_device_ids, |
| 553 | .ops = { |
| 554 | .add = cmpc_keys_add, |
| 555 | .remove = cmpc_keys_remove, |
| 556 | .notify = cmpc_keys_handler, |
| 557 | } |
| 558 | }; |
| 559 | |
| 560 | |
| 561 | /* |
| 562 | * General init/exit code. |
| 563 | */ |
| 564 | |
| 565 | static int cmpc_init(void) |
| 566 | { |
| 567 | int r; |
| 568 | |
| 569 | r = acpi_bus_register_driver(&cmpc_keys_acpi_driver); |
| 570 | if (r) |
| 571 | goto failed_keys; |
| 572 | |
| 573 | r = acpi_bus_register_driver(&cmpc_bl_acpi_driver); |
| 574 | if (r) |
| 575 | goto failed_bl; |
| 576 | |
| 577 | r = acpi_bus_register_driver(&cmpc_tablet_acpi_driver); |
| 578 | if (r) |
| 579 | goto failed_tablet; |
| 580 | |
| 581 | r = acpi_bus_register_driver(&cmpc_accel_acpi_driver); |
| 582 | if (r) |
| 583 | goto failed_accel; |
| 584 | |
| 585 | return r; |
| 586 | |
| 587 | failed_accel: |
| 588 | acpi_bus_unregister_driver(&cmpc_tablet_acpi_driver); |
| 589 | |
| 590 | failed_tablet: |
| 591 | acpi_bus_unregister_driver(&cmpc_bl_acpi_driver); |
| 592 | |
| 593 | failed_bl: |
| 594 | acpi_bus_unregister_driver(&cmpc_keys_acpi_driver); |
| 595 | |
| 596 | failed_keys: |
| 597 | return r; |
| 598 | } |
| 599 | |
| 600 | static void cmpc_exit(void) |
| 601 | { |
| 602 | acpi_bus_unregister_driver(&cmpc_accel_acpi_driver); |
| 603 | acpi_bus_unregister_driver(&cmpc_tablet_acpi_driver); |
| 604 | acpi_bus_unregister_driver(&cmpc_bl_acpi_driver); |
| 605 | acpi_bus_unregister_driver(&cmpc_keys_acpi_driver); |
| 606 | } |
| 607 | |
| 608 | module_init(cmpc_init); |
| 609 | module_exit(cmpc_exit); |