projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'oprofile-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[deliverable/linux.git] / drivers / platform / x86 / eeepc-laptop.c
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>
24 #include <linux/backlight.h>
25 #include <linux/fb.h>
26 #include <linux/hwmon.h>
27 #include <linux/hwmon-sysfs.h>
28 #include <acpi/acpi_drivers.h>
29 #include <acpi/acpi_bus.h>
30 #include <linux/uaccess.h>
31 #include <linux/input.h>
32 #include <linux/rfkill.h>
33 #include <linux/pci.h>
34
35 #define EEEPC_LAPTOP_VERSION "0.1"
36
37 #define EEEPC_HOTK_NAME "Eee PC Hotkey Driver"
38 #define EEEPC_HOTK_FILE "eeepc"
39 #define EEEPC_HOTK_CLASS "hotkey"
40 #define EEEPC_HOTK_DEVICE_NAME "Hotkey"
41 #define EEEPC_HOTK_HID "ASUS010"
42
43 #define EEEPC_LOG EEEPC_HOTK_FILE ": "
44 #define EEEPC_ERR KERN_ERR EEEPC_LOG
45 #define EEEPC_WARNING KERN_WARNING EEEPC_LOG
46 #define EEEPC_NOTICE KERN_NOTICE EEEPC_LOG
47 #define EEEPC_INFO KERN_INFO EEEPC_LOG
48
49 /*
50 * Definitions for Asus EeePC
51 */
52 #define NOTIFY_WLAN_ON 0x10
53 #define NOTIFY_BRN_MIN 0x20
54 #define NOTIFY_BRN_MAX 0x2f
55
56 enum {
57 DISABLE_ASL_WLAN = 0x0001,
58 DISABLE_ASL_BLUETOOTH = 0x0002,
59 DISABLE_ASL_IRDA = 0x0004,
60 DISABLE_ASL_CAMERA = 0x0008,
61 DISABLE_ASL_TV = 0x0010,
62 DISABLE_ASL_GPS = 0x0020,
63 DISABLE_ASL_DISPLAYSWITCH = 0x0040,
64 DISABLE_ASL_MODEM = 0x0080,
65 DISABLE_ASL_CARDREADER = 0x0100
66 };
67
68 enum {
69 CM_ASL_WLAN = 0,
70 CM_ASL_BLUETOOTH,
71 CM_ASL_IRDA,
72 CM_ASL_1394,
73 CM_ASL_CAMERA,
74 CM_ASL_TV,
75 CM_ASL_GPS,
76 CM_ASL_DVDROM,
77 CM_ASL_DISPLAYSWITCH,
78 CM_ASL_PANELBRIGHT,
79 CM_ASL_BIOSFLASH,
80 CM_ASL_ACPIFLASH,
81 CM_ASL_CPUFV,
82 CM_ASL_CPUTEMPERATURE,
83 CM_ASL_FANCPU,
84 CM_ASL_FANCHASSIS,
85 CM_ASL_USBPORT1,
86 CM_ASL_USBPORT2,
87 CM_ASL_USBPORT3,
88 CM_ASL_MODEM,
89 CM_ASL_CARDREADER,
90 CM_ASL_LID
91 };
92
93 static const char *cm_getv[] = {
94 "WLDG", "BTHG", NULL, NULL,
95 "CAMG", NULL, NULL, NULL,
96 NULL, "PBLG", NULL, NULL,
97 "CFVG", NULL, NULL, NULL,
98 "USBG", NULL, NULL, "MODG",
99 "CRDG", "LIDG"
100 };
101
102 static const char *cm_setv[] = {
103 "WLDS", "BTHS", NULL, NULL,
104 "CAMS", NULL, NULL, NULL,
105 "SDSP", "PBLS", "HDPS", NULL,
106 "CFVS", NULL, NULL, NULL,
107 "USBG", NULL, NULL, "MODS",
108 "CRDS", NULL
109 };
110
111 #define EEEPC_EC "\\_SB.PCI0.SBRG.EC0."
112
113 #define EEEPC_EC_FAN_PWM EEEPC_EC "SC02" /* Fan PWM duty cycle (%) */
114 #define EEEPC_EC_SC02 0x63
115 #define EEEPC_EC_FAN_HRPM EEEPC_EC "SC05" /* High byte, fan speed (RPM) */
116 #define EEEPC_EC_FAN_LRPM EEEPC_EC "SC06" /* Low byte, fan speed (RPM) */
117 #define EEEPC_EC_FAN_CTRL EEEPC_EC "SFB3" /* Byte containing SF25 */
118 #define EEEPC_EC_SFB3 0xD3
119
120 /*
121 * This is the main structure, we can use it to store useful information
122 * about the hotk device
123 */
124 struct eeepc_hotk {
125 struct acpi_device *device; /* the device we are in */
126 acpi_handle handle; /* the handle of the hotk device */
127 u32 cm_supported; /* the control methods supported
128 by this BIOS */
129 uint init_flag; /* Init flags */
130 u16 event_count[128]; /* count for each event */
131 struct input_dev *inputdev;
132 u16 *keycode_map;
133 struct rfkill *eeepc_wlan_rfkill;
134 struct rfkill *eeepc_bluetooth_rfkill;
135 };
136
137 /* The actual device the driver binds to */
138 static struct eeepc_hotk *ehotk;
139
140 /* Platform device/driver */
141 static struct platform_driver platform_driver = {
142 .driver = {
143 .name = EEEPC_HOTK_FILE,
144 .owner = THIS_MODULE,
145 }
146 };
147
148 static struct platform_device *platform_device;
149
150 struct key_entry {
151 char type;
152 u8 code;
153 u16 keycode;
154 };
155
156 enum { KE_KEY, KE_END };
157
158 static struct key_entry eeepc_keymap[] = {
159 /* Sleep already handled via generic ACPI code */
160 {KE_KEY, 0x10, KEY_WLAN },
161 {KE_KEY, 0x11, KEY_WLAN },
162 {KE_KEY, 0x12, KEY_PROG1 },
163 {KE_KEY, 0x13, KEY_MUTE },
164 {KE_KEY, 0x14, KEY_VOLUMEDOWN },
165 {KE_KEY, 0x15, KEY_VOLUMEUP },
166 {KE_KEY, 0x1a, KEY_COFFEE },
167 {KE_KEY, 0x1b, KEY_ZOOM },
168 {KE_KEY, 0x1c, KEY_PROG2 },
169 {KE_KEY, 0x1d, KEY_PROG3 },
170 {KE_KEY, NOTIFY_BRN_MIN, KEY_BRIGHTNESSDOWN },
171 {KE_KEY, NOTIFY_BRN_MIN + 2, KEY_BRIGHTNESSUP },
172 {KE_KEY, 0x30, KEY_SWITCHVIDEOMODE },
173 {KE_KEY, 0x31, KEY_SWITCHVIDEOMODE },
174 {KE_KEY, 0x32, KEY_SWITCHVIDEOMODE },
175 {KE_END, 0},
176 };
177
178 /*
179 * The hotkey driver declaration
180 */
181 static int eeepc_hotk_add(struct acpi_device *device);
182 static int eeepc_hotk_remove(struct acpi_device *device, int type);
183
184 static const struct acpi_device_id eeepc_device_ids[] = {
185 {EEEPC_HOTK_HID, 0},
186 {"", 0},
187 };
188 MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
189
190 static struct acpi_driver eeepc_hotk_driver = {
191 .name = EEEPC_HOTK_NAME,
192 .class = EEEPC_HOTK_CLASS,
193 .ids = eeepc_device_ids,
194 .ops = {
195 .add = eeepc_hotk_add,
196 .remove = eeepc_hotk_remove,
197 },
198 };
199
200 /* The backlight device /sys/class/backlight */
201 static struct backlight_device *eeepc_backlight_device;
202
203 /* The hwmon device */
204 static struct device *eeepc_hwmon_device;
205
206 /*
207 * The backlight class declaration
208 */
209 static int read_brightness(struct backlight_device *bd);
210 static int update_bl_status(struct backlight_device *bd);
211 static struct backlight_ops eeepcbl_ops = {
212 .get_brightness = read_brightness,
213 .update_status = update_bl_status,
214 };
215
216 MODULE_AUTHOR("Corentin Chary, Eric Cooper");
217 MODULE_DESCRIPTION(EEEPC_HOTK_NAME);
218 MODULE_LICENSE("GPL");
219
220 /*
221 * ACPI Helpers
222 */
223 static int write_acpi_int(acpi_handle handle, const char *method, int val,
224 struct acpi_buffer *output)
225 {
226 struct acpi_object_list params;
227 union acpi_object in_obj;
228 acpi_status status;
229
230 params.count = 1;
231 params.pointer = &in_obj;
232 in_obj.type = ACPI_TYPE_INTEGER;
233 in_obj.integer.value = val;
234
235 status = acpi_evaluate_object(handle, (char *)method, &params, output);
236 return (status == AE_OK ? 0 : -1);
237 }
238
239 static int read_acpi_int(acpi_handle handle, const char *method, int *val)
240 {
241 acpi_status status;
242 unsigned long long result;
243
244 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
245 if (ACPI_FAILURE(status)) {
246 *val = -1;
247 return -1;
248 } else {
249 *val = result;
250 return 0;
251 }
252 }
253
254 static int set_acpi(int cm, int value)
255 {
256 if (ehotk->cm_supported & (0x1 << cm)) {
257 const char *method = cm_setv[cm];
258 if (method == NULL)
259 return -ENODEV;
260 if (write_acpi_int(ehotk->handle, method, value, NULL))
261 printk(EEEPC_WARNING "Error writing %s\n", method);
262 }
263 return 0;
264 }
265
266 static int get_acpi(int cm)
267 {
268 int value = -1;
269 if ((ehotk->cm_supported & (0x1 << cm))) {
270 const char *method = cm_getv[cm];
271 if (method == NULL)
272 return -ENODEV;
273 if (read_acpi_int(ehotk->handle, method, &value))
274 printk(EEEPC_WARNING "Error reading %s\n", method);
275 }
276 return value;
277 }
278
279 /*
280 * Backlight
281 */
282 static int read_brightness(struct backlight_device *bd)
283 {
284 return get_acpi(CM_ASL_PANELBRIGHT);
285 }
286
287 static int set_brightness(struct backlight_device *bd, int value)
288 {
289 value = max(0, min(15, value));
290 return set_acpi(CM_ASL_PANELBRIGHT, value);
291 }
292
293 static int update_bl_status(struct backlight_device *bd)
294 {
295 return set_brightness(bd, bd->props.brightness);
296 }
297
298 /*
299 * Rfkill helpers
300 */
301
302 static int eeepc_wlan_rfkill_set(void *data, enum rfkill_state state)
303 {
304 if (state == RFKILL_STATE_SOFT_BLOCKED)
305 return set_acpi(CM_ASL_WLAN, 0);
306 else
307 return set_acpi(CM_ASL_WLAN, 1);
308 }
309
310 static int eeepc_wlan_rfkill_state(void *data, enum rfkill_state *state)
311 {
312 if (get_acpi(CM_ASL_WLAN) == 1)
313 *state = RFKILL_STATE_UNBLOCKED;
314 else
315 *state = RFKILL_STATE_SOFT_BLOCKED;
316 return 0;
317 }
318
319 static int eeepc_bluetooth_rfkill_set(void *data, enum rfkill_state state)
320 {
321 if (state == RFKILL_STATE_SOFT_BLOCKED)
322 return set_acpi(CM_ASL_BLUETOOTH, 0);
323 else
324 return set_acpi(CM_ASL_BLUETOOTH, 1);
325 }
326
327 static int eeepc_bluetooth_rfkill_state(void *data, enum rfkill_state *state)
328 {
329 if (get_acpi(CM_ASL_BLUETOOTH) == 1)
330 *state = RFKILL_STATE_UNBLOCKED;
331 else
332 *state = RFKILL_STATE_SOFT_BLOCKED;
333 return 0;
334 }
335
336 /*
337 * Sys helpers
338 */
339 static int parse_arg(const char *buf, unsigned long count, int *val)
340 {
341 if (!count)
342 return 0;
343 if (sscanf(buf, "%i", val) != 1)
344 return -EINVAL;
345 return count;
346 }
347
348 static ssize_t store_sys_acpi(int cm, const char *buf, size_t count)
349 {
350 int rv, value;
351
352 rv = parse_arg(buf, count, &value);
353 if (rv > 0)
354 set_acpi(cm, value);
355 return rv;
356 }
357
358 static ssize_t show_sys_acpi(int cm, char *buf)
359 {
360 return sprintf(buf, "%d\n", get_acpi(cm));
361 }
362
363 #define EEEPC_CREATE_DEVICE_ATTR(_name, _cm) \
364 static ssize_t show_##_name(struct device *dev, \
365 struct device_attribute *attr, \
366 char *buf) \
367 { \
368 return show_sys_acpi(_cm, buf); \
369 } \
370 static ssize_t store_##_name(struct device *dev, \
371 struct device_attribute *attr, \
372 const char *buf, size_t count) \
373 { \
374 return store_sys_acpi(_cm, buf, count); \
375 } \
376 static struct device_attribute dev_attr_##_name = { \
377 .attr = { \
378 .name = __stringify(_name), \
379 .mode = 0644 }, \
380 .show = show_##_name, \
381 .store = store_##_name, \
382 }
383
384 EEEPC_CREATE_DEVICE_ATTR(camera, CM_ASL_CAMERA);
385 EEEPC_CREATE_DEVICE_ATTR(cardr, CM_ASL_CARDREADER);
386 EEEPC_CREATE_DEVICE_ATTR(disp, CM_ASL_DISPLAYSWITCH);
387 EEEPC_CREATE_DEVICE_ATTR(cpufv, CM_ASL_CPUFV);
388
389 static struct attribute *platform_attributes[] = {
390 &dev_attr_camera.attr,
391 &dev_attr_cardr.attr,
392 &dev_attr_disp.attr,
393 &dev_attr_cpufv.attr,
394 NULL
395 };
396
397 static struct attribute_group platform_attribute_group = {
398 .attrs = platform_attributes
399 };
400
401 /*
402 * Hotkey functions
403 */
404 static struct key_entry *eepc_get_entry_by_scancode(int code)
405 {
406 struct key_entry *key;
407
408 for (key = eeepc_keymap; key->type != KE_END; key++)
409 if (code == key->code)
410 return key;
411
412 return NULL;
413 }
414
415 static struct key_entry *eepc_get_entry_by_keycode(int code)
416 {
417 struct key_entry *key;
418
419 for (key = eeepc_keymap; key->type != KE_END; key++)
420 if (code == key->keycode && key->type == KE_KEY)
421 return key;
422
423 return NULL;
424 }
425
426 static int eeepc_getkeycode(struct input_dev *dev, int scancode, int *keycode)
427 {
428 struct key_entry *key = eepc_get_entry_by_scancode(scancode);
429
430 if (key && key->type == KE_KEY) {
431 *keycode = key->keycode;
432 return 0;
433 }
434
435 return -EINVAL;
436 }
437
438 static int eeepc_setkeycode(struct input_dev *dev, int scancode, int keycode)
439 {
440 struct key_entry *key;
441 int old_keycode;
442
443 if (keycode < 0 || keycode > KEY_MAX)
444 return -EINVAL;
445
446 key = eepc_get_entry_by_scancode(scancode);
447 if (key && key->type == KE_KEY) {
448 old_keycode = key->keycode;
449 key->keycode = keycode;
450 set_bit(keycode, dev->keybit);
451 if (!eepc_get_entry_by_keycode(old_keycode))
452 clear_bit(old_keycode, dev->keybit);
453 return 0;
454 }
455
456 return -EINVAL;
457 }
458
459 static int eeepc_hotk_check(void)
460 {
461 const struct key_entry *key;
462 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
463 int result;
464
465 result = acpi_bus_get_status(ehotk->device);
466 if (result)
467 return result;
468 if (ehotk->device->status.present) {
469 if (write_acpi_int(ehotk->handle, "INIT", ehotk->init_flag,
470 &buffer)) {
471 printk(EEEPC_ERR "Hotkey initialization failed\n");
472 return -ENODEV;
473 } else {
474 printk(EEEPC_NOTICE "Hotkey init flags 0x%x\n",
475 ehotk->init_flag);
476 }
477 /* get control methods supported */
478 if (read_acpi_int(ehotk->handle, "CMSG"
479 , &ehotk->cm_supported)) {
480 printk(EEEPC_ERR
481 "Get control methods supported failed\n");
482 return -ENODEV;
483 } else {
484 printk(EEEPC_INFO
485 "Get control methods supported: 0x%x\n",
486 ehotk->cm_supported);
487 }
488 ehotk->inputdev = input_allocate_device();
489 if (!ehotk->inputdev) {
490 printk(EEEPC_INFO "Unable to allocate input device\n");
491 return 0;
492 }
493 ehotk->inputdev->name = "Asus EeePC extra buttons";
494 ehotk->inputdev->phys = EEEPC_HOTK_FILE "/input0";
495 ehotk->inputdev->id.bustype = BUS_HOST;
496 ehotk->inputdev->getkeycode = eeepc_getkeycode;
497 ehotk->inputdev->setkeycode = eeepc_setkeycode;
498
499 for (key = eeepc_keymap; key->type != KE_END; key++) {
500 switch (key->type) {
501 case KE_KEY:
502 set_bit(EV_KEY, ehotk->inputdev->evbit);
503 set_bit(key->keycode, ehotk->inputdev->keybit);
504 break;
505 }
506 }
507 result = input_register_device(ehotk->inputdev);
508 if (result) {
509 printk(EEEPC_INFO "Unable to register input device\n");
510 input_free_device(ehotk->inputdev);
511 return 0;
512 }
513 } else {
514 printk(EEEPC_ERR "Hotkey device not present, aborting\n");
515 return -EINVAL;
516 }
517 return 0;
518 }
519
520 static int notify_brn(void)
521 {
522 /* returns the *previous* brightness, or -1 */
523 struct backlight_device *bd = eeepc_backlight_device;
524 if (bd) {
525 int old = bd->props.brightness;
526 bd->props.brightness = read_brightness(bd);
527 return old;
528 }
529 return -1;
530 }
531
532 static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
533 {
534 enum rfkill_state state;
535 struct pci_dev *dev;
536 struct pci_bus *bus = pci_find_bus(0, 1);
537
538 if (event != ACPI_NOTIFY_BUS_CHECK)
539 return;
540
541 if (!bus) {
542 printk(EEEPC_WARNING "Unable to find PCI bus 1?\n");
543 return;
544 }
545
546 eeepc_wlan_rfkill_state(ehotk->eeepc_wlan_rfkill, &state);
547
548 if (state == RFKILL_STATE_UNBLOCKED) {
549 dev = pci_get_slot(bus, 0);
550 if (dev) {
551 /* Device already present */
552 pci_dev_put(dev);
553 return;
554 }
555 dev = pci_scan_single_device(bus, 0);
556 if (dev) {
557 pci_bus_assign_resources(bus);
558 if (pci_bus_add_device(dev))
559 printk(EEEPC_ERR "Unable to hotplug wifi\n");
560 }
561 } else {
562 dev = pci_get_slot(bus, 0);
563 if (dev) {
564 pci_remove_bus_device(dev);
565 pci_dev_put(dev);
566 }
567 }
568
569 rfkill_force_state(ehotk->eeepc_wlan_rfkill, state);
570 }
571
572 static void eeepc_hotk_notify(acpi_handle handle, u32 event, void *data)
573 {
574 static struct key_entry *key;
575 u16 count;
576 int brn = -ENODEV;
577
578 if (!ehotk)
579 return;
580 if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX)
581 brn = notify_brn();
582 count = ehotk->event_count[event % 128]++;
583 acpi_bus_generate_proc_event(ehotk->device, event, count);
584 acpi_bus_generate_netlink_event(ehotk->device->pnp.device_class,
585 dev_name(&ehotk->device->dev), event,
586 count);
587 if (ehotk->inputdev) {
588 if (brn != -ENODEV) {
589 /* brightness-change events need special
590 * handling for conversion to key events
591 */
592 if (brn < 0)
593 brn = event;
594 else
595 brn += NOTIFY_BRN_MIN;
596 if (event < brn)
597 event = NOTIFY_BRN_MIN; /* brightness down */
598 else if (event > brn)
599 event = NOTIFY_BRN_MIN + 2; /* ... up */
600 else
601 event = NOTIFY_BRN_MIN + 1; /* ... unchanged */
602 }
603 key = eepc_get_entry_by_scancode(event);
604 if (key) {
605 switch (key->type) {
606 case KE_KEY:
607 input_report_key(ehotk->inputdev, key->keycode,
608 1);
609 input_sync(ehotk->inputdev);
610 input_report_key(ehotk->inputdev, key->keycode,
611 0);
612 input_sync(ehotk->inputdev);
613 break;
614 }
615 }
616 }
617 }
618
619 static int eeepc_register_rfkill_notifier(char *node)
620 {
621 acpi_status status = AE_OK;
622 acpi_handle handle;
623
624 status = acpi_get_handle(NULL, node, &handle);
625
626 if (ACPI_SUCCESS(status)) {
627 status = acpi_install_notify_handler(handle,
628 ACPI_SYSTEM_NOTIFY,
629 eeepc_rfkill_notify,
630 NULL);
631 if (ACPI_FAILURE(status))
632 printk(EEEPC_WARNING
633 "Failed to register notify on %s\n", node);
634 } else
635 return -ENODEV;
636
637 return 0;
638 }
639
640 static void eeepc_unregister_rfkill_notifier(char *node)
641 {
642 acpi_status status = AE_OK;
643 acpi_handle handle;
644
645 status = acpi_get_handle(NULL, node, &handle);
646
647 if (ACPI_SUCCESS(status)) {
648 status = acpi_remove_notify_handler(handle,
649 ACPI_SYSTEM_NOTIFY,
650 eeepc_rfkill_notify);
651 if (ACPI_FAILURE(status))
652 printk(EEEPC_ERR
653 "Error removing rfkill notify handler %s\n",
654 node);
655 }
656 }
657
658 static int eeepc_hotk_add(struct acpi_device *device)
659 {
660 acpi_status status = AE_OK;
661 int result;
662
663 if (!device)
664 return -EINVAL;
665 printk(EEEPC_NOTICE EEEPC_HOTK_NAME "\n");
666 ehotk = kzalloc(sizeof(struct eeepc_hotk), GFP_KERNEL);
667 if (!ehotk)
668 return -ENOMEM;
669 ehotk->init_flag = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
670 ehotk->handle = device->handle;
671 strcpy(acpi_device_name(device), EEEPC_HOTK_DEVICE_NAME);
672 strcpy(acpi_device_class(device), EEEPC_HOTK_CLASS);
673 device->driver_data = ehotk;
674 ehotk->device = device;
675 result = eeepc_hotk_check();
676 if (result)
677 goto ehotk_fail;
678 status = acpi_install_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY,
679 eeepc_hotk_notify, ehotk);
680 if (ACPI_FAILURE(status))
681 printk(EEEPC_ERR "Error installing notify handler\n");
682
683 eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P6");
684 eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P7");
685
686 if (get_acpi(CM_ASL_WLAN) != -1) {
687 ehotk->eeepc_wlan_rfkill = rfkill_allocate(&device->dev,
688 RFKILL_TYPE_WLAN);
689
690 if (!ehotk->eeepc_wlan_rfkill)
691 goto wlan_fail;
692
693 ehotk->eeepc_wlan_rfkill->name = "eeepc-wlan";
694 ehotk->eeepc_wlan_rfkill->toggle_radio = eeepc_wlan_rfkill_set;
695 ehotk->eeepc_wlan_rfkill->get_state = eeepc_wlan_rfkill_state;
696 if (get_acpi(CM_ASL_WLAN) == 1) {
697 ehotk->eeepc_wlan_rfkill->state =
698 RFKILL_STATE_UNBLOCKED;
699 rfkill_set_default(RFKILL_TYPE_WLAN,
700 RFKILL_STATE_UNBLOCKED);
701 } else {
702 ehotk->eeepc_wlan_rfkill->state =
703 RFKILL_STATE_SOFT_BLOCKED;
704 rfkill_set_default(RFKILL_TYPE_WLAN,
705 RFKILL_STATE_SOFT_BLOCKED);
706 }
707 result = rfkill_register(ehotk->eeepc_wlan_rfkill);
708 if (result)
709 goto wlan_fail;
710 }
711
712 if (get_acpi(CM_ASL_BLUETOOTH) != -1) {
713 ehotk->eeepc_bluetooth_rfkill =
714 rfkill_allocate(&device->dev, RFKILL_TYPE_BLUETOOTH);
715
716 if (!ehotk->eeepc_bluetooth_rfkill)
717 goto bluetooth_fail;
718
719 ehotk->eeepc_bluetooth_rfkill->name = "eeepc-bluetooth";
720 ehotk->eeepc_bluetooth_rfkill->toggle_radio =
721 eeepc_bluetooth_rfkill_set;
722 ehotk->eeepc_bluetooth_rfkill->get_state =
723 eeepc_bluetooth_rfkill_state;
724 if (get_acpi(CM_ASL_BLUETOOTH) == 1) {
725 ehotk->eeepc_bluetooth_rfkill->state =
726 RFKILL_STATE_UNBLOCKED;
727 rfkill_set_default(RFKILL_TYPE_BLUETOOTH,
728 RFKILL_STATE_UNBLOCKED);
729 } else {
730 ehotk->eeepc_bluetooth_rfkill->state =
731 RFKILL_STATE_SOFT_BLOCKED;
732 rfkill_set_default(RFKILL_TYPE_BLUETOOTH,
733 RFKILL_STATE_SOFT_BLOCKED);
734 }
735
736 result = rfkill_register(ehotk->eeepc_bluetooth_rfkill);
737 if (result)
738 goto bluetooth_fail;
739 }
740
741 return 0;
742
743 bluetooth_fail:
744 if (ehotk->eeepc_bluetooth_rfkill)
745 rfkill_free(ehotk->eeepc_bluetooth_rfkill);
746 rfkill_unregister(ehotk->eeepc_wlan_rfkill);
747 ehotk->eeepc_wlan_rfkill = NULL;
748 wlan_fail:
749 if (ehotk->eeepc_wlan_rfkill)
750 rfkill_free(ehotk->eeepc_wlan_rfkill);
751 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P6");
752 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P7");
753 ehotk_fail:
754 kfree(ehotk);
755 ehotk = NULL;
756
757 return result;
758 }
759
760 static int eeepc_hotk_remove(struct acpi_device *device, int type)
761 {
762 acpi_status status = 0;
763
764 if (!device || !acpi_driver_data(device))
765 return -EINVAL;
766 status = acpi_remove_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY,
767 eeepc_hotk_notify);
768 if (ACPI_FAILURE(status))
769 printk(EEEPC_ERR "Error removing notify handler\n");
770
771 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P6");
772 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P7");
773
774 kfree(ehotk);
775 return 0;
776 }
777
778 /*
779 * Hwmon
780 */
781 static int eeepc_get_fan_pwm(void)
782 {
783 int value = 0;
784
785 read_acpi_int(NULL, EEEPC_EC_FAN_PWM, &value);
786 value = value * 255 / 100;
787 return (value);
788 }
789
790 static void eeepc_set_fan_pwm(int value)
791 {
792 value = SENSORS_LIMIT(value, 0, 255);
793 value = value * 100 / 255;
794 ec_write(EEEPC_EC_SC02, value);
795 }
796
797 static int eeepc_get_fan_rpm(void)
798 {
799 int high = 0;
800 int low = 0;
801
802 read_acpi_int(NULL, EEEPC_EC_FAN_HRPM, &high);
803 read_acpi_int(NULL, EEEPC_EC_FAN_LRPM, &low);
804 return (high << 8 | low);
805 }
806
807 static int eeepc_get_fan_ctrl(void)
808 {
809 int value = 0;
810
811 read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value);
812 return ((value & 0x02 ? 1 : 0));
813 }
814
815 static void eeepc_set_fan_ctrl(int manual)
816 {
817 int value = 0;
818
819 read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value);
820 if (manual)
821 value |= 0x02;
822 else
823 value &= ~0x02;
824 ec_write(EEEPC_EC_SFB3, value);
825 }
826
827 static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
828 {
829 int rv, value;
830
831 rv = parse_arg(buf, count, &value);
832 if (rv > 0)
833 set(value);
834 return rv;
835 }
836
837 static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
838 {
839 return sprintf(buf, "%d\n", get());
840 }
841
842 #define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \
843 static ssize_t show_##_name(struct device *dev, \
844 struct device_attribute *attr, \
845 char *buf) \
846 { \
847 return show_sys_hwmon(_set, buf); \
848 } \
849 static ssize_t store_##_name(struct device *dev, \
850 struct device_attribute *attr, \
851 const char *buf, size_t count) \
852 { \
853 return store_sys_hwmon(_get, buf, count); \
854 } \
855 static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
856
857 EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
858 EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
859 eeepc_get_fan_pwm, eeepc_set_fan_pwm);
860 EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
861 eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
862
863 static ssize_t
864 show_name(struct device *dev, struct device_attribute *attr, char *buf)
865 {
866 return sprintf(buf, "eeepc\n");
867 }
868 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
869
870 static struct attribute *hwmon_attributes[] = {
871 &sensor_dev_attr_pwm1.dev_attr.attr,
872 &sensor_dev_attr_fan1_input.dev_attr.attr,
873 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
874 &sensor_dev_attr_name.dev_attr.attr,
875 NULL
876 };
877
878 static struct attribute_group hwmon_attribute_group = {
879 .attrs = hwmon_attributes
880 };
881
882 /*
883 * exit/init
884 */
885 static void eeepc_backlight_exit(void)
886 {
887 if (eeepc_backlight_device)
888 backlight_device_unregister(eeepc_backlight_device);
889 eeepc_backlight_device = NULL;
890 }
891
892 static void eeepc_rfkill_exit(void)
893 {
894 if (ehotk->eeepc_wlan_rfkill)
895 rfkill_unregister(ehotk->eeepc_wlan_rfkill);
896 if (ehotk->eeepc_bluetooth_rfkill)
897 rfkill_unregister(ehotk->eeepc_bluetooth_rfkill);
898 }
899
900 static void eeepc_input_exit(void)
901 {
902 if (ehotk->inputdev)
903 input_unregister_device(ehotk->inputdev);
904 }
905
906 static void eeepc_hwmon_exit(void)
907 {
908 struct device *hwmon;
909
910 hwmon = eeepc_hwmon_device;
911 if (!hwmon)
912 return ;
913 sysfs_remove_group(&hwmon->kobj,
914 &hwmon_attribute_group);
915 hwmon_device_unregister(hwmon);
916 eeepc_hwmon_device = NULL;
917 }
918
919 static void __exit eeepc_laptop_exit(void)
920 {
921 eeepc_backlight_exit();
922 eeepc_rfkill_exit();
923 eeepc_input_exit();
924 eeepc_hwmon_exit();
925 acpi_bus_unregister_driver(&eeepc_hotk_driver);
926 sysfs_remove_group(&platform_device->dev.kobj,
927 &platform_attribute_group);
928 platform_device_unregister(platform_device);
929 platform_driver_unregister(&platform_driver);
930 }
931
932 static int eeepc_backlight_init(struct device *dev)
933 {
934 struct backlight_device *bd;
935
936 bd = backlight_device_register(EEEPC_HOTK_FILE, dev,
937 NULL, &eeepcbl_ops);
938 if (IS_ERR(bd)) {
939 printk(EEEPC_ERR
940 "Could not register eeepc backlight device\n");
941 eeepc_backlight_device = NULL;
942 return PTR_ERR(bd);
943 }
944 eeepc_backlight_device = bd;
945 bd->props.max_brightness = 15;
946 bd->props.brightness = read_brightness(NULL);
947 bd->props.power = FB_BLANK_UNBLANK;
948 backlight_update_status(bd);
949 return 0;
950 }
951
952 static int eeepc_hwmon_init(struct device *dev)
953 {
954 struct device *hwmon;
955 int result;
956
957 hwmon = hwmon_device_register(dev);
958 if (IS_ERR(hwmon)) {
959 printk(EEEPC_ERR
960 "Could not register eeepc hwmon device\n");
961 eeepc_hwmon_device = NULL;
962 return PTR_ERR(hwmon);
963 }
964 eeepc_hwmon_device = hwmon;
965 result = sysfs_create_group(&hwmon->kobj,
966 &hwmon_attribute_group);
967 if (result)
968 eeepc_hwmon_exit();
969 return result;
970 }
971
972 static int __init eeepc_laptop_init(void)
973 {
974 struct device *dev;
975 int result;
976
977 if (acpi_disabled)
978 return -ENODEV;
979 result = acpi_bus_register_driver(&eeepc_hotk_driver);
980 if (result < 0)
981 return result;
982 if (!ehotk) {
983 acpi_bus_unregister_driver(&eeepc_hotk_driver);
984 return -ENODEV;
985 }
986 dev = acpi_get_physical_device(ehotk->device->handle);
987
988 if (!acpi_video_backlight_support()) {
989 result = eeepc_backlight_init(dev);
990 if (result)
991 goto fail_backlight;
992 } else
993 printk(EEEPC_INFO "Backlight controlled by ACPI video "
994 "driver\n");
995
996 result = eeepc_hwmon_init(dev);
997 if (result)
998 goto fail_hwmon;
999 /* Register platform stuff */
1000 result = platform_driver_register(&platform_driver);
1001 if (result)
1002 goto fail_platform_driver;
1003 platform_device = platform_device_alloc(EEEPC_HOTK_FILE, -1);
1004 if (!platform_device) {
1005 result = -ENOMEM;
1006 goto fail_platform_device1;
1007 }
1008 result = platform_device_add(platform_device);
1009 if (result)
1010 goto fail_platform_device2;
1011 result = sysfs_create_group(&platform_device->dev.kobj,
1012 &platform_attribute_group);
1013 if (result)
1014 goto fail_sysfs;
1015 return 0;
1016 fail_sysfs:
1017 platform_device_del(platform_device);
1018 fail_platform_device2:
1019 platform_device_put(platform_device);
1020 fail_platform_device1:
1021 platform_driver_unregister(&platform_driver);
1022 fail_platform_driver:
1023 eeepc_hwmon_exit();
1024 fail_hwmon:
1025 eeepc_backlight_exit();
1026 fail_backlight:
1027 eeepc_input_exit();
1028 eeepc_rfkill_exit();
1029 return result;
1030 }
1031
1032 module_init(eeepc_laptop_init);
1033 module_exit(eeepc_laptop_exit);
Linux kernel - Deliverables
This page took 0.053787 seconds and 5 git commands to generate.