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Merge branch 'bjorn-notify' into release
[linux-2.6/x86.git] / drivers / platform / x86 / eeepc-laptop.c
blob46b5aa5e85f041214d4611a34b2282c516ec5f0e
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 static int eeepc_hotk_resume(struct acpi_device *device);
184 static void eeepc_hotk_notify(struct acpi_device *device, u32 event);
185
186 static const struct acpi_device_id eeepc_device_ids[] = {
187 {EEEPC_HOTK_HID, 0},
188 {"", 0},
189 };
190 MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
191
192 static struct acpi_driver eeepc_hotk_driver = {
193 .name = EEEPC_HOTK_NAME,
194 .class = EEEPC_HOTK_CLASS,
195 .ids = eeepc_device_ids,
196 .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
197 .ops = {
198 .add = eeepc_hotk_add,
199 .remove = eeepc_hotk_remove,
200 .resume = eeepc_hotk_resume,
201 .notify = eeepc_hotk_notify,
202 },
203 };
204
205 /* The backlight device /sys/class/backlight */
206 static struct backlight_device *eeepc_backlight_device;
207
208 /* The hwmon device */
209 static struct device *eeepc_hwmon_device;
210
211 /*
212 * The backlight class declaration
213 */
214 static int read_brightness(struct backlight_device *bd);
215 static int update_bl_status(struct backlight_device *bd);
216 static struct backlight_ops eeepcbl_ops = {
217 .get_brightness = read_brightness,
218 .update_status = update_bl_status,
219 };
220
221 MODULE_AUTHOR("Corentin Chary, Eric Cooper");
222 MODULE_DESCRIPTION(EEEPC_HOTK_NAME);
223 MODULE_LICENSE("GPL");
224
225 /*
226 * ACPI Helpers
227 */
228 static int write_acpi_int(acpi_handle handle, const char *method, int val,
229 struct acpi_buffer *output)
230 {
231 struct acpi_object_list params;
232 union acpi_object in_obj;
233 acpi_status status;
234
235 params.count = 1;
236 params.pointer = &in_obj;
237 in_obj.type = ACPI_TYPE_INTEGER;
238 in_obj.integer.value = val;
239
240 status = acpi_evaluate_object(handle, (char *)method, &params, output);
241 return (status == AE_OK ? 0 : -1);
242 }
243
244 static int read_acpi_int(acpi_handle handle, const char *method, int *val)
245 {
246 acpi_status status;
247 unsigned long long result;
248
249 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
250 if (ACPI_FAILURE(status)) {
251 *val = -1;
252 return -1;
253 } else {
254 *val = result;
255 return 0;
256 }
257 }
258
259 static int set_acpi(int cm, int value)
260 {
261 if (ehotk->cm_supported & (0x1 << cm)) {
262 const char *method = cm_setv[cm];
263 if (method == NULL)
264 return -ENODEV;
265 if (write_acpi_int(ehotk->handle, method, value, NULL))
266 printk(EEEPC_WARNING "Error writing %s\n", method);
267 }
268 return 0;
269 }
270
271 static int get_acpi(int cm)
272 {
273 int value = -1;
274 if ((ehotk->cm_supported & (0x1 << cm))) {
275 const char *method = cm_getv[cm];
276 if (method == NULL)
277 return -ENODEV;
278 if (read_acpi_int(ehotk->handle, method, &value))
279 printk(EEEPC_WARNING "Error reading %s\n", method);
280 }
281 return value;
282 }
283
284 /*
285 * Backlight
286 */
287 static int read_brightness(struct backlight_device *bd)
288 {
289 return get_acpi(CM_ASL_PANELBRIGHT);
290 }
291
292 static int set_brightness(struct backlight_device *bd, int value)
293 {
294 value = max(0, min(15, value));
295 return set_acpi(CM_ASL_PANELBRIGHT, value);
296 }
297
298 static int update_bl_status(struct backlight_device *bd)
299 {
300 return set_brightness(bd, bd->props.brightness);
301 }
302
303 /*
304 * Rfkill helpers
305 */
306
307 static bool eeepc_wlan_rfkill_blocked(void)
308 {
309 if (get_acpi(CM_ASL_WLAN) == 1)
310 return false;
311 return true;
312 }
313
314 static int eeepc_rfkill_set(void *data, bool blocked)
315 {
316 unsigned long asl = (unsigned long)data;
317 return set_acpi(asl, !blocked);
318 }
319
320 static const struct rfkill_ops eeepc_rfkill_ops = {
321 .set_block = eeepc_rfkill_set,
322 };
323
324 /*
325 * Sys helpers
326 */
327 static int parse_arg(const char *buf, unsigned long count, int *val)
328 {
329 if (!count)
330 return 0;
331 if (sscanf(buf, "%i", val) != 1)
332 return -EINVAL;
333 return count;
334 }
335
336 static ssize_t store_sys_acpi(int cm, const char *buf, size_t count)
337 {
338 int rv, value;
339
340 rv = parse_arg(buf, count, &value);
341 if (rv > 0)
342 set_acpi(cm, value);
343 return rv;
344 }
345
346 static ssize_t show_sys_acpi(int cm, char *buf)
347 {
348 return sprintf(buf, "%d\n", get_acpi(cm));
349 }
350
351 #define EEEPC_CREATE_DEVICE_ATTR(_name, _cm) \
352 static ssize_t show_##_name(struct device *dev, \
353 struct device_attribute *attr, \
354 char *buf) \
355 { \
356 return show_sys_acpi(_cm, buf); \
357 } \
358 static ssize_t store_##_name(struct device *dev, \
359 struct device_attribute *attr, \
360 const char *buf, size_t count) \
361 { \
362 return store_sys_acpi(_cm, buf, count); \
363 } \
364 static struct device_attribute dev_attr_##_name = { \
365 .attr = { \
366 .name = __stringify(_name), \
367 .mode = 0644 }, \
368 .show = show_##_name, \
369 .store = store_##_name, \
370 }
371
372 EEEPC_CREATE_DEVICE_ATTR(camera, CM_ASL_CAMERA);
373 EEEPC_CREATE_DEVICE_ATTR(cardr, CM_ASL_CARDREADER);
374 EEEPC_CREATE_DEVICE_ATTR(disp, CM_ASL_DISPLAYSWITCH);
375 EEEPC_CREATE_DEVICE_ATTR(cpufv, CM_ASL_CPUFV);
376
377 static struct attribute *platform_attributes[] = {
378 &dev_attr_camera.attr,
379 &dev_attr_cardr.attr,
380 &dev_attr_disp.attr,
381 &dev_attr_cpufv.attr,
382 NULL
383 };
384
385 static struct attribute_group platform_attribute_group = {
386 .attrs = platform_attributes
387 };
388
389 /*
390 * Hotkey functions
391 */
392 static struct key_entry *eepc_get_entry_by_scancode(int code)
393 {
394 struct key_entry *key;
395
396 for (key = eeepc_keymap; key->type != KE_END; key++)
397 if (code == key->code)
398 return key;
399
400 return NULL;
401 }
402
403 static struct key_entry *eepc_get_entry_by_keycode(int code)
404 {
405 struct key_entry *key;
406
407 for (key = eeepc_keymap; key->type != KE_END; key++)
408 if (code == key->keycode && key->type == KE_KEY)
409 return key;
410
411 return NULL;
412 }
413
414 static int eeepc_getkeycode(struct input_dev *dev, int scancode, int *keycode)
415 {
416 struct key_entry *key = eepc_get_entry_by_scancode(scancode);
417
418 if (key && key->type == KE_KEY) {
419 *keycode = key->keycode;
420 return 0;
421 }
422
423 return -EINVAL;
424 }
425
426 static int eeepc_setkeycode(struct input_dev *dev, int scancode, int keycode)
427 {
428 struct key_entry *key;
429 int old_keycode;
430
431 if (keycode < 0 || keycode > KEY_MAX)
432 return -EINVAL;
433
434 key = eepc_get_entry_by_scancode(scancode);
435 if (key && key->type == KE_KEY) {
436 old_keycode = key->keycode;
437 key->keycode = keycode;
438 set_bit(keycode, dev->keybit);
439 if (!eepc_get_entry_by_keycode(old_keycode))
440 clear_bit(old_keycode, dev->keybit);
441 return 0;
442 }
443
444 return -EINVAL;
445 }
446
447 static int eeepc_hotk_check(void)
448 {
449 const struct key_entry *key;
450 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
451 int result;
452
453 result = acpi_bus_get_status(ehotk->device);
454 if (result)
455 return result;
456 if (ehotk->device->status.present) {
457 if (write_acpi_int(ehotk->handle, "INIT", ehotk->init_flag,
458 &buffer)) {
459 printk(EEEPC_ERR "Hotkey initialization failed\n");
460 return -ENODEV;
461 } else {
462 printk(EEEPC_NOTICE "Hotkey init flags 0x%x\n",
463 ehotk->init_flag);
464 }
465 /* get control methods supported */
466 if (read_acpi_int(ehotk->handle, "CMSG"
467 , &ehotk->cm_supported)) {
468 printk(EEEPC_ERR
469 "Get control methods supported failed\n");
470 return -ENODEV;
471 } else {
472 printk(EEEPC_INFO
473 "Get control methods supported: 0x%x\n",
474 ehotk->cm_supported);
475 }
476 ehotk->inputdev = input_allocate_device();
477 if (!ehotk->inputdev) {
478 printk(EEEPC_INFO "Unable to allocate input device\n");
479 return 0;
480 }
481 ehotk->inputdev->name = "Asus EeePC extra buttons";
482 ehotk->inputdev->phys = EEEPC_HOTK_FILE "/input0";
483 ehotk->inputdev->id.bustype = BUS_HOST;
484 ehotk->inputdev->getkeycode = eeepc_getkeycode;
485 ehotk->inputdev->setkeycode = eeepc_setkeycode;
486
487 for (key = eeepc_keymap; key->type != KE_END; key++) {
488 switch (key->type) {
489 case KE_KEY:
490 set_bit(EV_KEY, ehotk->inputdev->evbit);
491 set_bit(key->keycode, ehotk->inputdev->keybit);
492 break;
493 }
494 }
495 result = input_register_device(ehotk->inputdev);
496 if (result) {
497 printk(EEEPC_INFO "Unable to register input device\n");
498 input_free_device(ehotk->inputdev);
499 return 0;
500 }
501 } else {
502 printk(EEEPC_ERR "Hotkey device not present, aborting\n");
503 return -EINVAL;
504 }
505 return 0;
506 }
507
508 static int notify_brn(void)
509 {
510 /* returns the *previous* brightness, or -1 */
511 struct backlight_device *bd = eeepc_backlight_device;
512 if (bd) {
513 int old = bd->props.brightness;
514 bd->props.brightness = read_brightness(bd);
515 return old;
516 }
517 return -1;
518 }
519
520 static void eeepc_rfkill_hotplug(void)
521 {
522 struct pci_dev *dev;
523 struct pci_bus *bus = pci_find_bus(0, 1);
524 bool blocked;
525
526 if (!bus) {
527 printk(EEEPC_WARNING "Unable to find PCI bus 1?\n");
528 return;
529 }
530
531 blocked = eeepc_wlan_rfkill_blocked();
532 if (!blocked) {
533 dev = pci_get_slot(bus, 0);
534 if (dev) {
535 /* Device already present */
536 pci_dev_put(dev);
537 return;
538 }
539 dev = pci_scan_single_device(bus, 0);
540 if (dev) {
541 pci_bus_assign_resources(bus);
542 if (pci_bus_add_device(dev))
543 printk(EEEPC_ERR "Unable to hotplug wifi\n");
544 }
545 } else {
546 dev = pci_get_slot(bus, 0);
547 if (dev) {
548 pci_remove_bus_device(dev);
549 pci_dev_put(dev);
550 }
551 }
552
553 rfkill_set_sw_state(ehotk->eeepc_wlan_rfkill, blocked);
554 }
555
556 static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
557 {
558 if (event != ACPI_NOTIFY_BUS_CHECK)
559 return;
560
561 eeepc_rfkill_hotplug();
562 }
563
564 static void eeepc_hotk_notify(struct acpi_device *device, u32 event)
565 {
566 static struct key_entry *key;
567 u16 count;
568 int brn = -ENODEV;
569
570 if (!ehotk)
571 return;
572 if (event > ACPI_MAX_SYS_NOTIFY)
573 return;
574 if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX)
575 brn = notify_brn();
576 count = ehotk->event_count[event % 128]++;
577 acpi_bus_generate_proc_event(ehotk->device, event, count);
578 acpi_bus_generate_netlink_event(ehotk->device->pnp.device_class,
579 dev_name(&ehotk->device->dev), event,
580 count);
581 if (ehotk->inputdev) {
582 if (brn != -ENODEV) {
583 /* brightness-change events need special
584 * handling for conversion to key events
585 */
586 if (brn < 0)
587 brn = event;
588 else
589 brn += NOTIFY_BRN_MIN;
590 if (event < brn)
591 event = NOTIFY_BRN_MIN; /* brightness down */
592 else if (event > brn)
593 event = NOTIFY_BRN_MIN + 2; /* ... up */
594 else
595 event = NOTIFY_BRN_MIN + 1; /* ... unchanged */
596 }
597 key = eepc_get_entry_by_scancode(event);
598 if (key) {
599 switch (key->type) {
600 case KE_KEY:
601 input_report_key(ehotk->inputdev, key->keycode,
602 1);
603 input_sync(ehotk->inputdev);
604 input_report_key(ehotk->inputdev, key->keycode,
605 0);
606 input_sync(ehotk->inputdev);
607 break;
608 }
609 }
610 }
611 }
612
613 static int eeepc_register_rfkill_notifier(char *node)
614 {
615 acpi_status status = AE_OK;
616 acpi_handle handle;
617
618 status = acpi_get_handle(NULL, node, &handle);
619
620 if (ACPI_SUCCESS(status)) {
621 status = acpi_install_notify_handler(handle,
622 ACPI_SYSTEM_NOTIFY,
623 eeepc_rfkill_notify,
624 NULL);
625 if (ACPI_FAILURE(status))
626 printk(EEEPC_WARNING
627 "Failed to register notify on %s\n", node);
628 } else
629 return -ENODEV;
630
631 return 0;
632 }
633
634 static void eeepc_unregister_rfkill_notifier(char *node)
635 {
636 acpi_status status = AE_OK;
637 acpi_handle handle;
638
639 status = acpi_get_handle(NULL, node, &handle);
640
641 if (ACPI_SUCCESS(status)) {
642 status = acpi_remove_notify_handler(handle,
643 ACPI_SYSTEM_NOTIFY,
644 eeepc_rfkill_notify);
645 if (ACPI_FAILURE(status))
646 printk(EEEPC_ERR
647 "Error removing rfkill notify handler %s\n",
648 node);
649 }
650 }
651
652 static int eeepc_hotk_add(struct acpi_device *device)
653 {
654 int result;
655
656 if (!device)
657 return -EINVAL;
658 printk(EEEPC_NOTICE EEEPC_HOTK_NAME "\n");
659 ehotk = kzalloc(sizeof(struct eeepc_hotk), GFP_KERNEL);
660 if (!ehotk)
661 return -ENOMEM;
662 ehotk->init_flag = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
663 ehotk->handle = device->handle;
664 strcpy(acpi_device_name(device), EEEPC_HOTK_DEVICE_NAME);
665 strcpy(acpi_device_class(device), EEEPC_HOTK_CLASS);
666 device->driver_data = ehotk;
667 ehotk->device = device;
668 result = eeepc_hotk_check();
669 if (result)
670 goto ehotk_fail;
671
672 eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P6");
673 eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P7");
674
675 if (get_acpi(CM_ASL_WLAN) != -1) {
676 ehotk->eeepc_wlan_rfkill = rfkill_alloc("eeepc-wlan",
677 &device->dev,
678 RFKILL_TYPE_WLAN,
679 &eeepc_rfkill_ops,
680 (void *)CM_ASL_WLAN);
681
682 if (!ehotk->eeepc_wlan_rfkill)
683 goto wlan_fail;
684
685 rfkill_init_sw_state(ehotk->eeepc_wlan_rfkill,
686 get_acpi(CM_ASL_WLAN) != 1);
687 result = rfkill_register(ehotk->eeepc_wlan_rfkill);
688 if (result)
689 goto wlan_fail;
690 }
691
692 if (get_acpi(CM_ASL_BLUETOOTH) != -1) {
693 ehotk->eeepc_bluetooth_rfkill =
694 rfkill_alloc("eeepc-bluetooth",
695 &device->dev,
696 RFKILL_TYPE_BLUETOOTH,
697 &eeepc_rfkill_ops,
698 (void *)CM_ASL_BLUETOOTH);
699
700 if (!ehotk->eeepc_bluetooth_rfkill)
701 goto bluetooth_fail;
702
703 rfkill_init_sw_state(ehotk->eeepc_bluetooth_rfkill,
704 get_acpi(CM_ASL_BLUETOOTH) != 1);
705 result = rfkill_register(ehotk->eeepc_bluetooth_rfkill);
706 if (result)
707 goto bluetooth_fail;
708 }
709
710 return 0;
711
712 bluetooth_fail:
713 rfkill_destroy(ehotk->eeepc_bluetooth_rfkill);
714 rfkill_unregister(ehotk->eeepc_wlan_rfkill);
715 wlan_fail:
716 rfkill_destroy(ehotk->eeepc_wlan_rfkill);
717 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P6");
718 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P7");
719 ehotk_fail:
720 kfree(ehotk);
721 ehotk = NULL;
722
723 return result;
724 }
725
726 static int eeepc_hotk_remove(struct acpi_device *device, int type)
727 {
728 if (!device || !acpi_driver_data(device))
729 return -EINVAL;
730
731 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P6");
732 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P7");
733
734 kfree(ehotk);
735 return 0;
736 }
737
738 static int eeepc_hotk_resume(struct acpi_device *device)
739 {
740 if (ehotk->eeepc_wlan_rfkill) {
741 bool wlan;
742
743 /* Workaround - it seems that _PTS disables the wireless
744 without notification or changing the value read by WLAN.
745 Normally this is fine because the correct value is restored
746 from the non-volatile storage on resume, but we need to do
747 it ourself if case suspend is aborted, or we lose wireless.
748 */
749 wlan = get_acpi(CM_ASL_WLAN);
750 set_acpi(CM_ASL_WLAN, wlan);
751
752 rfkill_set_sw_state(ehotk->eeepc_wlan_rfkill,
753 wlan != 1);
754
755 eeepc_rfkill_hotplug();
756 }
757
758 if (ehotk->eeepc_bluetooth_rfkill)
759 rfkill_set_sw_state(ehotk->eeepc_bluetooth_rfkill,
760 get_acpi(CM_ASL_BLUETOOTH) != 1);
761
762 return 0;
763 }
764
765 /*
766 * Hwmon
767 */
768 static int eeepc_get_fan_pwm(void)
769 {
770 int value = 0;
771
772 read_acpi_int(NULL, EEEPC_EC_FAN_PWM, &value);
773 value = value * 255 / 100;
774 return (value);
775 }
776
777 static void eeepc_set_fan_pwm(int value)
778 {
779 value = SENSORS_LIMIT(value, 0, 255);
780 value = value * 100 / 255;
781 ec_write(EEEPC_EC_SC02, value);
782 }
783
784 static int eeepc_get_fan_rpm(void)
785 {
786 int high = 0;
787 int low = 0;
788
789 read_acpi_int(NULL, EEEPC_EC_FAN_HRPM, &high);
790 read_acpi_int(NULL, EEEPC_EC_FAN_LRPM, &low);
791 return (high << 8 | low);
792 }
793
794 static int eeepc_get_fan_ctrl(void)
795 {
796 int value = 0;
797
798 read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value);
799 return ((value & 0x02 ? 1 : 0));
800 }
801
802 static void eeepc_set_fan_ctrl(int manual)
803 {
804 int value = 0;
805
806 read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value);
807 if (manual)
808 value |= 0x02;
809 else
810 value &= ~0x02;
811 ec_write(EEEPC_EC_SFB3, value);
812 }
813
814 static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
815 {
816 int rv, value;
817
818 rv = parse_arg(buf, count, &value);
819 if (rv > 0)
820 set(value);
821 return rv;
822 }
823
824 static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
825 {
826 return sprintf(buf, "%d\n", get());
827 }
828
829 #define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \
830 static ssize_t show_##_name(struct device *dev, \
831 struct device_attribute *attr, \
832 char *buf) \
833 { \
834 return show_sys_hwmon(_set, buf); \
835 } \
836 static ssize_t store_##_name(struct device *dev, \
837 struct device_attribute *attr, \
838 const char *buf, size_t count) \
839 { \
840 return store_sys_hwmon(_get, buf, count); \
841 } \
842 static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
843
844 EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
845 EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
846 eeepc_get_fan_pwm, eeepc_set_fan_pwm);
847 EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
848 eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
849
850 static ssize_t
851 show_name(struct device *dev, struct device_attribute *attr, char *buf)
852 {
853 return sprintf(buf, "eeepc\n");
854 }
855 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
856
857 static struct attribute *hwmon_attributes[] = {
858 &sensor_dev_attr_pwm1.dev_attr.attr,
859 &sensor_dev_attr_fan1_input.dev_attr.attr,
860 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
861 &sensor_dev_attr_name.dev_attr.attr,
862 NULL
863 };
864
865 static struct attribute_group hwmon_attribute_group = {
866 .attrs = hwmon_attributes
867 };
868
869 /*
870 * exit/init
871 */
872 static void eeepc_backlight_exit(void)
873 {
874 if (eeepc_backlight_device)
875 backlight_device_unregister(eeepc_backlight_device);
876 eeepc_backlight_device = NULL;
877 }
878
879 static void eeepc_rfkill_exit(void)
880 {
881 if (ehotk->eeepc_wlan_rfkill)
882 rfkill_unregister(ehotk->eeepc_wlan_rfkill);
883 if (ehotk->eeepc_bluetooth_rfkill)
884 rfkill_unregister(ehotk->eeepc_bluetooth_rfkill);
885 }
886
887 static void eeepc_input_exit(void)
888 {
889 if (ehotk->inputdev)
890 input_unregister_device(ehotk->inputdev);
891 }
892
893 static void eeepc_hwmon_exit(void)
894 {
895 struct device *hwmon;
896
897 hwmon = eeepc_hwmon_device;
898 if (!hwmon)
899 return ;
900 sysfs_remove_group(&hwmon->kobj,
901 &hwmon_attribute_group);
902 hwmon_device_unregister(hwmon);
903 eeepc_hwmon_device = NULL;
904 }
905
906 static void __exit eeepc_laptop_exit(void)
907 {
908 eeepc_backlight_exit();
909 eeepc_rfkill_exit();
910 eeepc_input_exit();
911 eeepc_hwmon_exit();
912 acpi_bus_unregister_driver(&eeepc_hotk_driver);
913 sysfs_remove_group(&platform_device->dev.kobj,
914 &platform_attribute_group);
915 platform_device_unregister(platform_device);
916 platform_driver_unregister(&platform_driver);
917 }
918
919 static int eeepc_backlight_init(struct device *dev)
920 {
921 struct backlight_device *bd;
922
923 bd = backlight_device_register(EEEPC_HOTK_FILE, dev,
924 NULL, &eeepcbl_ops);
925 if (IS_ERR(bd)) {
926 printk(EEEPC_ERR
927 "Could not register eeepc backlight device\n");
928 eeepc_backlight_device = NULL;
929 return PTR_ERR(bd);
930 }
931 eeepc_backlight_device = bd;
932 bd->props.max_brightness = 15;
933 bd->props.brightness = read_brightness(NULL);
934 bd->props.power = FB_BLANK_UNBLANK;
935 backlight_update_status(bd);
936 return 0;
937 }
938
939 static int eeepc_hwmon_init(struct device *dev)
940 {
941 struct device *hwmon;
942 int result;
943
944 hwmon = hwmon_device_register(dev);
945 if (IS_ERR(hwmon)) {
946 printk(EEEPC_ERR
947 "Could not register eeepc hwmon device\n");
948 eeepc_hwmon_device = NULL;
949 return PTR_ERR(hwmon);
950 }
951 eeepc_hwmon_device = hwmon;
952 result = sysfs_create_group(&hwmon->kobj,
953 &hwmon_attribute_group);
954 if (result)
955 eeepc_hwmon_exit();
956 return result;
957 }
958
959 static int __init eeepc_laptop_init(void)
960 {
961 struct device *dev;
962 int result;
963
964 if (acpi_disabled)
965 return -ENODEV;
966 result = acpi_bus_register_driver(&eeepc_hotk_driver);
967 if (result < 0)
968 return result;
969 if (!ehotk) {
970 acpi_bus_unregister_driver(&eeepc_hotk_driver);
971 return -ENODEV;
972 }
973 dev = acpi_get_physical_device(ehotk->device->handle);
974
975 if (!acpi_video_backlight_support()) {
976 result = eeepc_backlight_init(dev);
977 if (result)
978 goto fail_backlight;
979 } else
980 printk(EEEPC_INFO "Backlight controlled by ACPI video "
981 "driver\n");
982
983 result = eeepc_hwmon_init(dev);
984 if (result)
985 goto fail_hwmon;
986 /* Register platform stuff */
987 result = platform_driver_register(&platform_driver);
988 if (result)
989 goto fail_platform_driver;
990 platform_device = platform_device_alloc(EEEPC_HOTK_FILE, -1);
991 if (!platform_device) {
992 result = -ENOMEM;
993 goto fail_platform_device1;
994 }
995 result = platform_device_add(platform_device);
996 if (result)
997 goto fail_platform_device2;
998 result = sysfs_create_group(&platform_device->dev.kobj,
999 &platform_attribute_group);
1000 if (result)
1001 goto fail_sysfs;
1002 return 0;
1003 fail_sysfs:
1004 platform_device_del(platform_device);
1005 fail_platform_device2:
1006 platform_device_put(platform_device);
1007 fail_platform_device1:
1008 platform_driver_unregister(&platform_driver);
1009 fail_platform_driver:
1010 eeepc_hwmon_exit();
1011 fail_hwmon:
1012 eeepc_backlight_exit();
1013 fail_backlight:
1014 eeepc_input_exit();
1015 eeepc_rfkill_exit();
1016 return result;
1017 }
1018
1019 module_init(eeepc_laptop_init);
1020 module_exit(eeepc_laptop_exit);
x86 "subsystem" repository