Eric Cooper | e59f879 | 2008-03-13 12:55:46 +0100 | [diff] [blame] | 1 | /* |
| 2 | * eepc-laptop.c - Asus Eee PC extras |
| 3 | * |
| 4 | * Based on asus_acpi.c as patched for the Eee PC by Asus: |
| 5 | * ftp://ftp.asus.com/pub/ASUS/EeePC/701/ASUS_ACPI_071126.rar |
| 6 | * Based on eee.c from eeepc-linux |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | */ |
| 18 | |
| 19 | #include <linux/kernel.h> |
| 20 | #include <linux/module.h> |
| 21 | #include <linux/init.h> |
| 22 | #include <linux/types.h> |
| 23 | #include <linux/platform_device.h> |
Corentin Chary | a5fa429 | 2008-03-13 12:56:37 +0100 | [diff] [blame] | 24 | #include <linux/backlight.h> |
| 25 | #include <linux/fb.h> |
Corentin Chary | e1faa9d | 2008-03-13 12:57:18 +0100 | [diff] [blame] | 26 | #include <linux/hwmon.h> |
| 27 | #include <linux/hwmon-sysfs.h> |
Eric Cooper | e59f879 | 2008-03-13 12:55:46 +0100 | [diff] [blame] | 28 | #include <acpi/acpi_drivers.h> |
| 29 | #include <acpi/acpi_bus.h> |
| 30 | #include <linux/uaccess.h> |
| 31 | |
| 32 | #define EEEPC_LAPTOP_VERSION "0.1" |
| 33 | |
| 34 | #define EEEPC_HOTK_NAME "Eee PC Hotkey Driver" |
| 35 | #define EEEPC_HOTK_FILE "eeepc" |
| 36 | #define EEEPC_HOTK_CLASS "hotkey" |
| 37 | #define EEEPC_HOTK_DEVICE_NAME "Hotkey" |
| 38 | #define EEEPC_HOTK_HID "ASUS010" |
| 39 | |
| 40 | #define EEEPC_LOG EEEPC_HOTK_FILE ": " |
| 41 | #define EEEPC_ERR KERN_ERR EEEPC_LOG |
| 42 | #define EEEPC_WARNING KERN_WARNING EEEPC_LOG |
| 43 | #define EEEPC_NOTICE KERN_NOTICE EEEPC_LOG |
| 44 | #define EEEPC_INFO KERN_INFO EEEPC_LOG |
| 45 | |
| 46 | /* |
| 47 | * Definitions for Asus EeePC |
| 48 | */ |
| 49 | #define NOTIFY_WLAN_ON 0x10 |
Corentin Chary | a5fa429 | 2008-03-13 12:56:37 +0100 | [diff] [blame] | 50 | #define NOTIFY_BRN_MIN 0x20 |
| 51 | #define NOTIFY_BRN_MAX 0x2f |
Eric Cooper | e59f879 | 2008-03-13 12:55:46 +0100 | [diff] [blame] | 52 | |
| 53 | enum { |
| 54 | DISABLE_ASL_WLAN = 0x0001, |
| 55 | DISABLE_ASL_BLUETOOTH = 0x0002, |
| 56 | DISABLE_ASL_IRDA = 0x0004, |
| 57 | DISABLE_ASL_CAMERA = 0x0008, |
| 58 | DISABLE_ASL_TV = 0x0010, |
| 59 | DISABLE_ASL_GPS = 0x0020, |
| 60 | DISABLE_ASL_DISPLAYSWITCH = 0x0040, |
| 61 | DISABLE_ASL_MODEM = 0x0080, |
| 62 | DISABLE_ASL_CARDREADER = 0x0100 |
| 63 | }; |
| 64 | |
| 65 | enum { |
| 66 | CM_ASL_WLAN = 0, |
| 67 | CM_ASL_BLUETOOTH, |
| 68 | CM_ASL_IRDA, |
| 69 | CM_ASL_1394, |
| 70 | CM_ASL_CAMERA, |
| 71 | CM_ASL_TV, |
| 72 | CM_ASL_GPS, |
| 73 | CM_ASL_DVDROM, |
| 74 | CM_ASL_DISPLAYSWITCH, |
| 75 | CM_ASL_PANELBRIGHT, |
| 76 | CM_ASL_BIOSFLASH, |
| 77 | CM_ASL_ACPIFLASH, |
| 78 | CM_ASL_CPUFV, |
| 79 | CM_ASL_CPUTEMPERATURE, |
| 80 | CM_ASL_FANCPU, |
| 81 | CM_ASL_FANCHASSIS, |
| 82 | CM_ASL_USBPORT1, |
| 83 | CM_ASL_USBPORT2, |
| 84 | CM_ASL_USBPORT3, |
| 85 | CM_ASL_MODEM, |
| 86 | CM_ASL_CARDREADER, |
| 87 | CM_ASL_LID |
| 88 | }; |
| 89 | |
| 90 | const char *cm_getv[] = { |
| 91 | "WLDG", NULL, NULL, NULL, |
| 92 | "CAMG", NULL, NULL, NULL, |
| 93 | NULL, "PBLG", NULL, NULL, |
| 94 | "CFVG", NULL, NULL, NULL, |
| 95 | "USBG", NULL, NULL, "MODG", |
| 96 | "CRDG", "LIDG" |
| 97 | }; |
| 98 | |
| 99 | const char *cm_setv[] = { |
| 100 | "WLDS", NULL, NULL, NULL, |
| 101 | "CAMS", NULL, NULL, NULL, |
| 102 | "SDSP", "PBLS", "HDPS", NULL, |
| 103 | "CFVS", NULL, NULL, NULL, |
| 104 | "USBG", NULL, NULL, "MODS", |
| 105 | "CRDS", NULL |
| 106 | }; |
| 107 | |
Corentin Chary | e1faa9d | 2008-03-13 12:57:18 +0100 | [diff] [blame] | 108 | #define EEEPC_EC "\\_SB.PCI0.SBRG.EC0." |
| 109 | |
| 110 | #define EEEPC_EC_FAN_PWM EEEPC_EC "SC02" /* Fan PWM duty cycle (%) */ |
| 111 | #define EEEPC_EC_SC02 0x63 |
| 112 | #define EEEPC_EC_FAN_HRPM EEEPC_EC "SC05" /* High byte, fan speed (RPM) */ |
| 113 | #define EEEPC_EC_FAN_LRPM EEEPC_EC "SC06" /* Low byte, fan speed (RPM) */ |
| 114 | #define EEEPC_EC_FAN_CTRL EEEPC_EC "SFB3" /* Byte containing SF25 */ |
| 115 | #define EEEPC_EC_SFB3 0xD3 |
| 116 | |
Eric Cooper | e59f879 | 2008-03-13 12:55:46 +0100 | [diff] [blame] | 117 | /* |
| 118 | * This is the main structure, we can use it to store useful information |
| 119 | * about the hotk device |
| 120 | */ |
| 121 | struct eeepc_hotk { |
| 122 | struct acpi_device *device; /* the device we are in */ |
| 123 | acpi_handle handle; /* the handle of the hotk device */ |
| 124 | u32 cm_supported; /* the control methods supported |
| 125 | by this BIOS */ |
| 126 | uint init_flag; /* Init flags */ |
| 127 | u16 event_count[128]; /* count for each event */ |
| 128 | }; |
| 129 | |
| 130 | /* The actual device the driver binds to */ |
| 131 | static struct eeepc_hotk *ehotk; |
| 132 | |
| 133 | /* Platform device/driver */ |
| 134 | static struct platform_driver platform_driver = { |
| 135 | .driver = { |
| 136 | .name = EEEPC_HOTK_FILE, |
| 137 | .owner = THIS_MODULE, |
| 138 | } |
| 139 | }; |
| 140 | |
| 141 | static struct platform_device *platform_device; |
| 142 | |
| 143 | /* |
| 144 | * The hotkey driver declaration |
| 145 | */ |
| 146 | static int eeepc_hotk_add(struct acpi_device *device); |
| 147 | static int eeepc_hotk_remove(struct acpi_device *device, int type); |
| 148 | |
| 149 | static const struct acpi_device_id eeepc_device_ids[] = { |
| 150 | {EEEPC_HOTK_HID, 0}, |
| 151 | {"", 0}, |
| 152 | }; |
| 153 | MODULE_DEVICE_TABLE(acpi, eeepc_device_ids); |
| 154 | |
| 155 | static struct acpi_driver eeepc_hotk_driver = { |
| 156 | .name = EEEPC_HOTK_NAME, |
| 157 | .class = EEEPC_HOTK_CLASS, |
| 158 | .ids = eeepc_device_ids, |
| 159 | .ops = { |
| 160 | .add = eeepc_hotk_add, |
| 161 | .remove = eeepc_hotk_remove, |
| 162 | }, |
| 163 | }; |
| 164 | |
Corentin Chary | a5fa429 | 2008-03-13 12:56:37 +0100 | [diff] [blame] | 165 | /* The backlight device /sys/class/backlight */ |
| 166 | static struct backlight_device *eeepc_backlight_device; |
| 167 | |
Corentin Chary | e1faa9d | 2008-03-13 12:57:18 +0100 | [diff] [blame] | 168 | /* The hwmon device */ |
| 169 | static struct device *eeepc_hwmon_device; |
| 170 | |
Corentin Chary | a5fa429 | 2008-03-13 12:56:37 +0100 | [diff] [blame] | 171 | /* |
| 172 | * The backlight class declaration |
| 173 | */ |
| 174 | static int read_brightness(struct backlight_device *bd); |
| 175 | static int update_bl_status(struct backlight_device *bd); |
| 176 | static struct backlight_ops eeepcbl_ops = { |
| 177 | .get_brightness = read_brightness, |
| 178 | .update_status = update_bl_status, |
| 179 | }; |
| 180 | |
Eric Cooper | e59f879 | 2008-03-13 12:55:46 +0100 | [diff] [blame] | 181 | MODULE_AUTHOR("Corentin Chary, Eric Cooper"); |
| 182 | MODULE_DESCRIPTION(EEEPC_HOTK_NAME); |
| 183 | MODULE_LICENSE("GPL"); |
| 184 | |
| 185 | /* |
| 186 | * ACPI Helpers |
| 187 | */ |
| 188 | static int write_acpi_int(acpi_handle handle, const char *method, int val, |
| 189 | struct acpi_buffer *output) |
| 190 | { |
| 191 | struct acpi_object_list params; |
| 192 | union acpi_object in_obj; |
| 193 | acpi_status status; |
| 194 | |
| 195 | params.count = 1; |
| 196 | params.pointer = &in_obj; |
| 197 | in_obj.type = ACPI_TYPE_INTEGER; |
| 198 | in_obj.integer.value = val; |
| 199 | |
| 200 | status = acpi_evaluate_object(handle, (char *)method, ¶ms, output); |
| 201 | return (status == AE_OK ? 0 : -1); |
| 202 | } |
| 203 | |
| 204 | static int read_acpi_int(acpi_handle handle, const char *method, int *val) |
| 205 | { |
| 206 | acpi_status status; |
| 207 | ulong result; |
| 208 | |
| 209 | status = acpi_evaluate_integer(handle, (char *)method, NULL, &result); |
| 210 | if (ACPI_FAILURE(status)) { |
| 211 | *val = -1; |
| 212 | return -1; |
| 213 | } else { |
| 214 | *val = result; |
| 215 | return 0; |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | static int set_acpi(int cm, int value) |
| 220 | { |
| 221 | if (ehotk->cm_supported & (0x1 << cm)) { |
| 222 | const char *method = cm_setv[cm]; |
| 223 | if (method == NULL) |
| 224 | return -ENODEV; |
| 225 | if (write_acpi_int(ehotk->handle, method, value, NULL)) |
| 226 | printk(EEEPC_WARNING "Error writing %s\n", method); |
| 227 | } |
| 228 | return 0; |
| 229 | } |
| 230 | |
| 231 | static int get_acpi(int cm) |
| 232 | { |
| 233 | int value = -1; |
| 234 | if ((ehotk->cm_supported & (0x1 << cm))) { |
| 235 | const char *method = cm_getv[cm]; |
| 236 | if (method == NULL) |
| 237 | return -ENODEV; |
| 238 | if (read_acpi_int(ehotk->handle, method, &value)) |
| 239 | printk(EEEPC_WARNING "Error reading %s\n", method); |
| 240 | } |
| 241 | return value; |
| 242 | } |
| 243 | |
| 244 | /* |
Corentin Chary | a5fa429 | 2008-03-13 12:56:37 +0100 | [diff] [blame] | 245 | * Backlight |
| 246 | */ |
| 247 | static int read_brightness(struct backlight_device *bd) |
| 248 | { |
| 249 | return get_acpi(CM_ASL_PANELBRIGHT); |
| 250 | } |
| 251 | |
| 252 | static int set_brightness(struct backlight_device *bd, int value) |
| 253 | { |
| 254 | value = max(0, min(15, value)); |
| 255 | return set_acpi(CM_ASL_PANELBRIGHT, value); |
| 256 | } |
| 257 | |
| 258 | static int update_bl_status(struct backlight_device *bd) |
| 259 | { |
| 260 | return set_brightness(bd, bd->props.brightness); |
| 261 | } |
| 262 | |
| 263 | /* |
Eric Cooper | e59f879 | 2008-03-13 12:55:46 +0100 | [diff] [blame] | 264 | * Sys helpers |
| 265 | */ |
| 266 | static int parse_arg(const char *buf, unsigned long count, int *val) |
| 267 | { |
| 268 | if (!count) |
| 269 | return 0; |
| 270 | if (sscanf(buf, "%i", val) != 1) |
| 271 | return -EINVAL; |
| 272 | return count; |
| 273 | } |
| 274 | |
| 275 | static ssize_t store_sys_acpi(int cm, const char *buf, size_t count) |
| 276 | { |
| 277 | int rv, value; |
| 278 | |
| 279 | rv = parse_arg(buf, count, &value); |
| 280 | if (rv > 0) |
| 281 | set_acpi(cm, value); |
| 282 | return rv; |
| 283 | } |
| 284 | |
| 285 | static ssize_t show_sys_acpi(int cm, char *buf) |
| 286 | { |
| 287 | return sprintf(buf, "%d\n", get_acpi(cm)); |
| 288 | } |
| 289 | |
| 290 | #define EEEPC_CREATE_DEVICE_ATTR(_name, _cm) \ |
| 291 | static ssize_t show_##_name(struct device *dev, \ |
| 292 | struct device_attribute *attr, \ |
| 293 | char *buf) \ |
| 294 | { \ |
| 295 | return show_sys_acpi(_cm, buf); \ |
| 296 | } \ |
| 297 | static ssize_t store_##_name(struct device *dev, \ |
| 298 | struct device_attribute *attr, \ |
| 299 | const char *buf, size_t count) \ |
| 300 | { \ |
| 301 | return store_sys_acpi(_cm, buf, count); \ |
| 302 | } \ |
| 303 | static struct device_attribute dev_attr_##_name = { \ |
| 304 | .attr = { \ |
| 305 | .name = __stringify(_name), \ |
| 306 | .mode = 0644 }, \ |
| 307 | .show = show_##_name, \ |
| 308 | .store = store_##_name, \ |
| 309 | } |
| 310 | |
| 311 | EEEPC_CREATE_DEVICE_ATTR(camera, CM_ASL_CAMERA); |
| 312 | EEEPC_CREATE_DEVICE_ATTR(cardr, CM_ASL_CARDREADER); |
| 313 | EEEPC_CREATE_DEVICE_ATTR(disp, CM_ASL_DISPLAYSWITCH); |
| 314 | EEEPC_CREATE_DEVICE_ATTR(wlan, CM_ASL_WLAN); |
| 315 | |
| 316 | static struct attribute *platform_attributes[] = { |
| 317 | &dev_attr_camera.attr, |
| 318 | &dev_attr_cardr.attr, |
| 319 | &dev_attr_disp.attr, |
| 320 | &dev_attr_wlan.attr, |
| 321 | NULL |
| 322 | }; |
| 323 | |
| 324 | static struct attribute_group platform_attribute_group = { |
| 325 | .attrs = platform_attributes |
| 326 | }; |
| 327 | |
| 328 | /* |
| 329 | * Hotkey functions |
| 330 | */ |
| 331 | static int eeepc_hotk_check(void) |
| 332 | { |
| 333 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 334 | int result; |
| 335 | |
| 336 | result = acpi_bus_get_status(ehotk->device); |
| 337 | if (result) |
| 338 | return result; |
| 339 | if (ehotk->device->status.present) { |
| 340 | if (write_acpi_int(ehotk->handle, "INIT", ehotk->init_flag, |
| 341 | &buffer)) { |
| 342 | printk(EEEPC_ERR "Hotkey initialization failed\n"); |
| 343 | return -ENODEV; |
| 344 | } else { |
| 345 | printk(EEEPC_NOTICE "Hotkey init flags 0x%x\n", |
| 346 | ehotk->init_flag); |
| 347 | } |
| 348 | /* get control methods supported */ |
| 349 | if (read_acpi_int(ehotk->handle, "CMSG" |
| 350 | , &ehotk->cm_supported)) { |
| 351 | printk(EEEPC_ERR |
| 352 | "Get control methods supported failed\n"); |
| 353 | return -ENODEV; |
| 354 | } else { |
| 355 | printk(EEEPC_INFO |
| 356 | "Get control methods supported: 0x%x\n", |
| 357 | ehotk->cm_supported); |
| 358 | } |
| 359 | } else { |
| 360 | printk(EEEPC_ERR "Hotkey device not present, aborting\n"); |
| 361 | return -EINVAL; |
| 362 | } |
| 363 | return 0; |
| 364 | } |
| 365 | |
| 366 | static void notify_wlan(u32 *event) |
| 367 | { |
| 368 | /* if DISABLE_ASL_WLAN is set, the notify code for fn+f2 |
| 369 | will always be 0x10 */ |
| 370 | if (ehotk->cm_supported & (0x1 << CM_ASL_WLAN)) { |
| 371 | const char *method = cm_getv[CM_ASL_WLAN]; |
| 372 | int value; |
| 373 | if (read_acpi_int(ehotk->handle, method, &value)) |
| 374 | printk(EEEPC_WARNING "Error reading %s\n", |
| 375 | method); |
| 376 | else if (value == 1) |
| 377 | *event = 0x11; |
| 378 | } |
| 379 | } |
| 380 | |
Corentin Chary | a5fa429 | 2008-03-13 12:56:37 +0100 | [diff] [blame] | 381 | static void notify_brn(void) |
| 382 | { |
| 383 | struct backlight_device *bd = eeepc_backlight_device; |
| 384 | bd->props.brightness = read_brightness(bd); |
| 385 | } |
| 386 | |
Eric Cooper | e59f879 | 2008-03-13 12:55:46 +0100 | [diff] [blame] | 387 | static void eeepc_hotk_notify(acpi_handle handle, u32 event, void *data) |
| 388 | { |
| 389 | if (!ehotk) |
| 390 | return; |
| 391 | if (event == NOTIFY_WLAN_ON && (DISABLE_ASL_WLAN & ehotk->init_flag)) |
| 392 | notify_wlan(&event); |
Corentin Chary | a5fa429 | 2008-03-13 12:56:37 +0100 | [diff] [blame] | 393 | if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX) |
| 394 | notify_brn(); |
Eric Cooper | e59f879 | 2008-03-13 12:55:46 +0100 | [diff] [blame] | 395 | acpi_bus_generate_proc_event(ehotk->device, event, |
| 396 | ehotk->event_count[event % 128]++); |
| 397 | } |
| 398 | |
| 399 | static int eeepc_hotk_add(struct acpi_device *device) |
| 400 | { |
| 401 | acpi_status status = AE_OK; |
| 402 | int result; |
| 403 | |
| 404 | if (!device) |
| 405 | return -EINVAL; |
| 406 | printk(EEEPC_NOTICE EEEPC_HOTK_NAME "\n"); |
| 407 | ehotk = kzalloc(sizeof(struct eeepc_hotk), GFP_KERNEL); |
| 408 | if (!ehotk) |
| 409 | return -ENOMEM; |
| 410 | ehotk->init_flag = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH; |
| 411 | ehotk->handle = device->handle; |
| 412 | strcpy(acpi_device_name(device), EEEPC_HOTK_DEVICE_NAME); |
| 413 | strcpy(acpi_device_class(device), EEEPC_HOTK_CLASS); |
| 414 | acpi_driver_data(device) = ehotk; |
| 415 | ehotk->device = device; |
| 416 | result = eeepc_hotk_check(); |
| 417 | if (result) |
| 418 | goto end; |
| 419 | status = acpi_install_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY, |
| 420 | eeepc_hotk_notify, ehotk); |
| 421 | if (ACPI_FAILURE(status)) |
| 422 | printk(EEEPC_ERR "Error installing notify handler\n"); |
| 423 | end: |
| 424 | if (result) { |
| 425 | kfree(ehotk); |
| 426 | ehotk = NULL; |
| 427 | } |
| 428 | return result; |
| 429 | } |
| 430 | |
| 431 | static int eeepc_hotk_remove(struct acpi_device *device, int type) |
| 432 | { |
| 433 | acpi_status status = 0; |
| 434 | |
| 435 | if (!device || !acpi_driver_data(device)) |
| 436 | return -EINVAL; |
| 437 | status = acpi_remove_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY, |
| 438 | eeepc_hotk_notify); |
| 439 | if (ACPI_FAILURE(status)) |
| 440 | printk(EEEPC_ERR "Error removing notify handler\n"); |
| 441 | kfree(ehotk); |
| 442 | return 0; |
| 443 | } |
| 444 | |
| 445 | /* |
Corentin Chary | e1faa9d | 2008-03-13 12:57:18 +0100 | [diff] [blame] | 446 | * Hwmon |
| 447 | */ |
| 448 | static int eeepc_get_fan_pwm(void) |
| 449 | { |
| 450 | int value = 0; |
| 451 | |
| 452 | read_acpi_int(NULL, EEEPC_EC_FAN_PWM, &value); |
| 453 | return (value); |
| 454 | } |
| 455 | |
| 456 | static void eeepc_set_fan_pwm(int value) |
| 457 | { |
| 458 | value = SENSORS_LIMIT(value, 0, 100); |
| 459 | ec_write(EEEPC_EC_SC02, value); |
| 460 | } |
| 461 | |
| 462 | static int eeepc_get_fan_rpm(void) |
| 463 | { |
| 464 | int high = 0; |
| 465 | int low = 0; |
| 466 | |
| 467 | read_acpi_int(NULL, EEEPC_EC_FAN_HRPM, &high); |
| 468 | read_acpi_int(NULL, EEEPC_EC_FAN_LRPM, &low); |
| 469 | return (high << 8 | low); |
| 470 | } |
| 471 | |
| 472 | static int eeepc_get_fan_ctrl(void) |
| 473 | { |
| 474 | int value = 0; |
| 475 | |
| 476 | read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value); |
| 477 | return ((value & 0x02 ? 1 : 0)); |
| 478 | } |
| 479 | |
| 480 | static void eeepc_set_fan_ctrl(int manual) |
| 481 | { |
| 482 | int value = 0; |
| 483 | |
| 484 | read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value); |
| 485 | if (manual) |
| 486 | value |= 0x02; |
| 487 | else |
| 488 | value &= ~0x02; |
| 489 | ec_write(EEEPC_EC_SFB3, value); |
| 490 | } |
| 491 | |
| 492 | static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count) |
| 493 | { |
| 494 | int rv, value; |
| 495 | |
| 496 | rv = parse_arg(buf, count, &value); |
| 497 | if (rv > 0) |
| 498 | set(value); |
| 499 | return rv; |
| 500 | } |
| 501 | |
| 502 | static ssize_t show_sys_hwmon(int (*get)(void), char *buf) |
| 503 | { |
| 504 | return sprintf(buf, "%d\n", get()); |
| 505 | } |
| 506 | |
| 507 | #define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \ |
| 508 | static ssize_t show_##_name(struct device *dev, \ |
| 509 | struct device_attribute *attr, \ |
| 510 | char *buf) \ |
| 511 | { \ |
| 512 | return show_sys_hwmon(_set, buf); \ |
| 513 | } \ |
| 514 | static ssize_t store_##_name(struct device *dev, \ |
| 515 | struct device_attribute *attr, \ |
| 516 | const char *buf, size_t count) \ |
| 517 | { \ |
| 518 | return store_sys_hwmon(_get, buf, count); \ |
| 519 | } \ |
| 520 | static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0); |
| 521 | |
| 522 | EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL); |
| 523 | EEEPC_CREATE_SENSOR_ATTR(fan1_pwm, S_IRUGO | S_IWUSR, |
| 524 | eeepc_get_fan_pwm, eeepc_set_fan_pwm); |
| 525 | EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, |
| 526 | eeepc_get_fan_ctrl, eeepc_set_fan_ctrl); |
| 527 | |
| 528 | static struct attribute *hwmon_attributes[] = { |
| 529 | &sensor_dev_attr_fan1_pwm.dev_attr.attr, |
| 530 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
| 531 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, |
| 532 | NULL |
| 533 | }; |
| 534 | |
| 535 | static struct attribute_group hwmon_attribute_group = { |
| 536 | .attrs = hwmon_attributes |
| 537 | }; |
| 538 | |
| 539 | /* |
Eric Cooper | e59f879 | 2008-03-13 12:55:46 +0100 | [diff] [blame] | 540 | * exit/init |
| 541 | */ |
Corentin Chary | a5fa429 | 2008-03-13 12:56:37 +0100 | [diff] [blame] | 542 | static void eeepc_backlight_exit(void) |
| 543 | { |
| 544 | if (eeepc_backlight_device) |
| 545 | backlight_device_unregister(eeepc_backlight_device); |
| 546 | eeepc_backlight_device = NULL; |
| 547 | } |
| 548 | |
Corentin Chary | e1faa9d | 2008-03-13 12:57:18 +0100 | [diff] [blame] | 549 | static void eeepc_hwmon_exit(void) |
| 550 | { |
| 551 | struct device *hwmon; |
| 552 | |
| 553 | hwmon = eeepc_hwmon_device; |
| 554 | if (!hwmon) |
| 555 | return ; |
| 556 | hwmon_device_unregister(hwmon); |
| 557 | sysfs_remove_group(&hwmon->kobj, |
| 558 | &hwmon_attribute_group); |
| 559 | eeepc_hwmon_device = NULL; |
| 560 | } |
| 561 | |
Eric Cooper | e59f879 | 2008-03-13 12:55:46 +0100 | [diff] [blame] | 562 | static void __exit eeepc_laptop_exit(void) |
| 563 | { |
Corentin Chary | a5fa429 | 2008-03-13 12:56:37 +0100 | [diff] [blame] | 564 | eeepc_backlight_exit(); |
Corentin Chary | e1faa9d | 2008-03-13 12:57:18 +0100 | [diff] [blame] | 565 | eeepc_hwmon_exit(); |
Eric Cooper | e59f879 | 2008-03-13 12:55:46 +0100 | [diff] [blame] | 566 | acpi_bus_unregister_driver(&eeepc_hotk_driver); |
| 567 | sysfs_remove_group(&platform_device->dev.kobj, |
| 568 | &platform_attribute_group); |
| 569 | platform_device_unregister(platform_device); |
| 570 | platform_driver_unregister(&platform_driver); |
| 571 | } |
| 572 | |
Corentin Chary | a5fa429 | 2008-03-13 12:56:37 +0100 | [diff] [blame] | 573 | static int eeepc_backlight_init(struct device *dev) |
| 574 | { |
| 575 | struct backlight_device *bd; |
| 576 | |
| 577 | bd = backlight_device_register(EEEPC_HOTK_FILE, dev, |
| 578 | NULL, &eeepcbl_ops); |
| 579 | if (IS_ERR(bd)) { |
| 580 | printk(EEEPC_ERR |
| 581 | "Could not register eeepc backlight device\n"); |
| 582 | eeepc_backlight_device = NULL; |
| 583 | return PTR_ERR(bd); |
| 584 | } |
| 585 | eeepc_backlight_device = bd; |
| 586 | bd->props.max_brightness = 15; |
| 587 | bd->props.brightness = read_brightness(NULL); |
| 588 | bd->props.power = FB_BLANK_UNBLANK; |
| 589 | backlight_update_status(bd); |
| 590 | return 0; |
| 591 | } |
| 592 | |
Corentin Chary | e1faa9d | 2008-03-13 12:57:18 +0100 | [diff] [blame] | 593 | static int eeepc_hwmon_init(struct device *dev) |
| 594 | { |
| 595 | struct device *hwmon; |
| 596 | int result; |
| 597 | |
| 598 | hwmon = hwmon_device_register(dev); |
| 599 | if (IS_ERR(hwmon)) { |
| 600 | printk(EEEPC_ERR |
| 601 | "Could not register eeepc hwmon device\n"); |
| 602 | eeepc_hwmon_device = NULL; |
| 603 | return PTR_ERR(hwmon); |
| 604 | } |
| 605 | eeepc_hwmon_device = hwmon; |
| 606 | result = sysfs_create_group(&hwmon->kobj, |
| 607 | &hwmon_attribute_group); |
| 608 | if (result) |
| 609 | eeepc_hwmon_exit(); |
| 610 | return result; |
| 611 | } |
| 612 | |
Eric Cooper | e59f879 | 2008-03-13 12:55:46 +0100 | [diff] [blame] | 613 | static int __init eeepc_laptop_init(void) |
| 614 | { |
| 615 | struct device *dev; |
| 616 | int result; |
| 617 | |
| 618 | if (acpi_disabled) |
| 619 | return -ENODEV; |
| 620 | result = acpi_bus_register_driver(&eeepc_hotk_driver); |
| 621 | if (result < 0) |
| 622 | return result; |
| 623 | if (!ehotk) { |
| 624 | acpi_bus_unregister_driver(&eeepc_hotk_driver); |
| 625 | return -ENODEV; |
| 626 | } |
| 627 | dev = acpi_get_physical_device(ehotk->device->handle); |
Corentin Chary | a5fa429 | 2008-03-13 12:56:37 +0100 | [diff] [blame] | 628 | result = eeepc_backlight_init(dev); |
| 629 | if (result) |
| 630 | goto fail_backlight; |
Corentin Chary | e1faa9d | 2008-03-13 12:57:18 +0100 | [diff] [blame] | 631 | result = eeepc_hwmon_init(dev); |
| 632 | if (result) |
| 633 | goto fail_hwmon; |
Eric Cooper | e59f879 | 2008-03-13 12:55:46 +0100 | [diff] [blame] | 634 | /* Register platform stuff */ |
| 635 | result = platform_driver_register(&platform_driver); |
| 636 | if (result) |
| 637 | goto fail_platform_driver; |
| 638 | platform_device = platform_device_alloc(EEEPC_HOTK_FILE, -1); |
| 639 | if (!platform_device) { |
| 640 | result = -ENOMEM; |
| 641 | goto fail_platform_device1; |
| 642 | } |
| 643 | result = platform_device_add(platform_device); |
| 644 | if (result) |
| 645 | goto fail_platform_device2; |
| 646 | result = sysfs_create_group(&platform_device->dev.kobj, |
| 647 | &platform_attribute_group); |
| 648 | if (result) |
| 649 | goto fail_sysfs; |
| 650 | return 0; |
| 651 | fail_sysfs: |
| 652 | platform_device_del(platform_device); |
| 653 | fail_platform_device2: |
| 654 | platform_device_put(platform_device); |
| 655 | fail_platform_device1: |
| 656 | platform_driver_unregister(&platform_driver); |
| 657 | fail_platform_driver: |
Corentin Chary | e1faa9d | 2008-03-13 12:57:18 +0100 | [diff] [blame] | 658 | eeepc_hwmon_exit(); |
| 659 | fail_hwmon: |
Corentin Chary | a5fa429 | 2008-03-13 12:56:37 +0100 | [diff] [blame] | 660 | eeepc_backlight_exit(); |
| 661 | fail_backlight: |
Eric Cooper | e59f879 | 2008-03-13 12:55:46 +0100 | [diff] [blame] | 662 | return result; |
| 663 | } |
| 664 | |
| 665 | module_init(eeepc_laptop_init); |
| 666 | module_exit(eeepc_laptop_exit); |