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eeepc-laptop: Work around rfkill firmware bug
[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
388 static struct attribute *platform_attributes[] = {
389 &dev_attr_camera.attr,
390 &dev_attr_cardr.attr,
391 &dev_attr_disp.attr,
392 NULL
393 };
394
395 static struct attribute_group platform_attribute_group = {
396 .attrs = platform_attributes
397 };
398
399 /*
400 * Hotkey functions
401 */
402 static struct key_entry *eepc_get_entry_by_scancode(int code)
403 {
404 struct key_entry *key;
405
406 for (key = eeepc_keymap; key->type != KE_END; key++)
407 if (code == key->code)
408 return key;
409
410 return NULL;
411 }
412
413 static struct key_entry *eepc_get_entry_by_keycode(int code)
414 {
415 struct key_entry *key;
416
417 for (key = eeepc_keymap; key->type != KE_END; key++)
418 if (code == key->keycode && key->type == KE_KEY)
419 return key;
420
421 return NULL;
422 }
423
424 static int eeepc_getkeycode(struct input_dev *dev, int scancode, int *keycode)
425 {
426 struct key_entry *key = eepc_get_entry_by_scancode(scancode);
427
428 if (key && key->type == KE_KEY) {
429 *keycode = key->keycode;
430 return 0;
431 }
432
433 return -EINVAL;
434 }
435
436 static int eeepc_setkeycode(struct input_dev *dev, int scancode, int keycode)
437 {
438 struct key_entry *key;
439 int old_keycode;
440
441 if (keycode < 0 || keycode > KEY_MAX)
442 return -EINVAL;
443
444 key = eepc_get_entry_by_scancode(scancode);
445 if (key && key->type == KE_KEY) {
446 old_keycode = key->keycode;
447 key->keycode = keycode;
448 set_bit(keycode, dev->keybit);
449 if (!eepc_get_entry_by_keycode(old_keycode))
450 clear_bit(old_keycode, dev->keybit);
451 return 0;
452 }
453
454 return -EINVAL;
455 }
456
457 static int eeepc_hotk_check(void)
458 {
459 const struct key_entry *key;
460 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
461 int result;
462
463 result = acpi_bus_get_status(ehotk->device);
464 if (result)
465 return result;
466 if (ehotk->device->status.present) {
467 if (write_acpi_int(ehotk->handle, "INIT", ehotk->init_flag,
468 &buffer)) {
469 printk(EEEPC_ERR "Hotkey initialization failed\n");
470 return -ENODEV;
471 } else {
472 printk(EEEPC_NOTICE "Hotkey init flags 0x%x\n",
473 ehotk->init_flag);
474 }
475 /* get control methods supported */
476 if (read_acpi_int(ehotk->handle, "CMSG"
477 , &ehotk->cm_supported)) {
478 printk(EEEPC_ERR
479 "Get control methods supported failed\n");
480 return -ENODEV;
481 } else {
482 printk(EEEPC_INFO
483 "Get control methods supported: 0x%x\n",
484 ehotk->cm_supported);
485 }
486 ehotk->inputdev = input_allocate_device();
487 if (!ehotk->inputdev) {
488 printk(EEEPC_INFO "Unable to allocate input device\n");
489 return 0;
490 }
491 ehotk->inputdev->name = "Asus EeePC extra buttons";
492 ehotk->inputdev->phys = EEEPC_HOTK_FILE "/input0";
493 ehotk->inputdev->id.bustype = BUS_HOST;
494 ehotk->inputdev->getkeycode = eeepc_getkeycode;
495 ehotk->inputdev->setkeycode = eeepc_setkeycode;
496
497 for (key = eeepc_keymap; key->type != KE_END; key++) {
498 switch (key->type) {
499 case KE_KEY:
500 set_bit(EV_KEY, ehotk->inputdev->evbit);
501 set_bit(key->keycode, ehotk->inputdev->keybit);
502 break;
503 }
504 }
505 result = input_register_device(ehotk->inputdev);
506 if (result) {
507 printk(EEEPC_INFO "Unable to register input device\n");
508 input_free_device(ehotk->inputdev);
509 return 0;
510 }
511 } else {
512 printk(EEEPC_ERR "Hotkey device not present, aborting\n");
513 return -EINVAL;
514 }
515 return 0;
516 }
517
518 static int notify_brn(void)
519 {
520 /* returns the *previous* brightness, or -1 */
521 struct backlight_device *bd = eeepc_backlight_device;
522 if (bd) {
523 int old = bd->props.brightness;
524 bd->props.brightness = read_brightness(bd);
525 return old;
526 }
527 return -1;
528 }
529
530 static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
531 {
532 enum rfkill_state state;
533 struct pci_dev *dev;
534 struct pci_bus *bus = pci_find_bus(0, 1);
535
536 if (event != ACPI_NOTIFY_BUS_CHECK)
537 return;
538
539 if (!bus) {
540 printk(EEEPC_WARNING "Unable to find PCI bus 1?\n");
541 return;
542 }
543
544 eeepc_wlan_rfkill_state(ehotk->eeepc_wlan_rfkill, &state);
545
546 if (state == RFKILL_STATE_UNBLOCKED) {
547 dev = pci_get_slot(bus, 0);
548 if (dev) {
549 /* Device already present */
550 pci_dev_put(dev);
551 return;
552 }
553 dev = pci_scan_single_device(bus, 0);
554 if (dev) {
555 pci_bus_assign_resources(bus);
556 if (pci_bus_add_device(dev))
557 printk(EEEPC_ERR "Unable to hotplug wifi\n");
558 }
559 } else {
560 dev = pci_get_slot(bus, 0);
561 if (dev) {
562 pci_remove_bus_device(dev);
563 pci_dev_put(dev);
564 }
565 }
566
567 rfkill_force_state(ehotk->eeepc_wlan_rfkill, state);
568 }
569
570 static void eeepc_hotk_notify(acpi_handle handle, u32 event, void *data)
571 {
572 static struct key_entry *key;
573 u16 count;
574 int brn = -ENODEV;
575
576 if (!ehotk)
577 return;
578 if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX)
579 brn = notify_brn();
580 count = ehotk->event_count[event % 128]++;
581 acpi_bus_generate_proc_event(ehotk->device, event, count);
582 acpi_bus_generate_netlink_event(ehotk->device->pnp.device_class,
583 dev_name(&ehotk->device->dev), event,
584 count);
585 if (ehotk->inputdev) {
586 if (brn != -ENODEV) {
587 /* brightness-change events need special
588 * handling for conversion to key events
589 */
590 if (brn < 0)
591 brn = event;
592 else
593 brn += NOTIFY_BRN_MIN;
594 if (event < brn)
595 event = NOTIFY_BRN_MIN; /* brightness down */
596 else if (event > brn)
597 event = NOTIFY_BRN_MIN + 2; /* ... up */
598 else
599 event = NOTIFY_BRN_MIN + 1; /* ... unchanged */
600 }
601 key = eepc_get_entry_by_scancode(event);
602 if (key) {
603 switch (key->type) {
604 case KE_KEY:
605 input_report_key(ehotk->inputdev, key->keycode,
606 1);
607 input_sync(ehotk->inputdev);
608 input_report_key(ehotk->inputdev, key->keycode,
609 0);
610 input_sync(ehotk->inputdev);
611 break;
612 }
613 }
614 }
615 }
616
617 static int eeepc_register_rfkill_notifier(char *node)
618 {
619 acpi_status status = AE_OK;
620 acpi_handle handle;
621
622 status = acpi_get_handle(NULL, node, &handle);
623
624 if (ACPI_SUCCESS(status)) {
625 status = acpi_install_notify_handler(handle,
626 ACPI_SYSTEM_NOTIFY,
627 eeepc_rfkill_notify,
628 NULL);
629 if (ACPI_FAILURE(status))
630 printk(EEEPC_WARNING
631 "Failed to register notify on %s\n", node);
632 } else
633 return -ENODEV;
634
635 return 0;
636 }
637
638 static void eeepc_unregister_rfkill_notifier(char *node)
639 {
640 acpi_status status = AE_OK;
641 acpi_handle handle;
642
643 status = acpi_get_handle(NULL, node, &handle);
644
645 if (ACPI_SUCCESS(status)) {
646 status = acpi_remove_notify_handler(handle,
647 ACPI_SYSTEM_NOTIFY,
648 eeepc_rfkill_notify);
649 if (ACPI_FAILURE(status))
650 printk(EEEPC_ERR
651 "Error removing rfkill notify handler %s\n",
652 node);
653 }
654 }
655
656 static int eeepc_hotk_add(struct acpi_device *device)
657 {
658 acpi_status status = AE_OK;
659 int result;
660
661 if (!device)
662 return -EINVAL;
663 printk(EEEPC_NOTICE EEEPC_HOTK_NAME "\n");
664 ehotk = kzalloc(sizeof(struct eeepc_hotk), GFP_KERNEL);
665 if (!ehotk)
666 return -ENOMEM;
667 ehotk->init_flag = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
668 ehotk->handle = device->handle;
669 strcpy(acpi_device_name(device), EEEPC_HOTK_DEVICE_NAME);
670 strcpy(acpi_device_class(device), EEEPC_HOTK_CLASS);
671 device->driver_data = ehotk;
672 ehotk->device = device;
673 result = eeepc_hotk_check();
674 if (result)
675 goto ehotk_fail;
676 status = acpi_install_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY,
677 eeepc_hotk_notify, ehotk);
678 if (ACPI_FAILURE(status))
679 printk(EEEPC_ERR "Error installing notify handler\n");
680
681 eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P6");
682 eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P7");
683
684 if (get_acpi(CM_ASL_WLAN) != -1) {
685 ehotk->eeepc_wlan_rfkill = rfkill_allocate(&device->dev,
686 RFKILL_TYPE_WLAN);
687
688 if (!ehotk->eeepc_wlan_rfkill)
689 goto wlan_fail;
690
691 ehotk->eeepc_wlan_rfkill->name = "eeepc-wlan";
692 ehotk->eeepc_wlan_rfkill->toggle_radio = eeepc_wlan_rfkill_set;
693 ehotk->eeepc_wlan_rfkill->get_state = eeepc_wlan_rfkill_state;
694 if (get_acpi(CM_ASL_WLAN) == 1) {
695 ehotk->eeepc_wlan_rfkill->state =
696 RFKILL_STATE_UNBLOCKED;
697 rfkill_set_default(RFKILL_TYPE_WLAN,
698 RFKILL_STATE_UNBLOCKED);
699 } else {
700 ehotk->eeepc_wlan_rfkill->state =
701 RFKILL_STATE_SOFT_BLOCKED;
702 rfkill_set_default(RFKILL_TYPE_WLAN,
703 RFKILL_STATE_SOFT_BLOCKED);
704 }
705 result = rfkill_register(ehotk->eeepc_wlan_rfkill);
706 if (result)
707 goto wlan_fail;
708 }
709
710 if (get_acpi(CM_ASL_BLUETOOTH) != -1) {
711 ehotk->eeepc_bluetooth_rfkill =
712 rfkill_allocate(&device->dev, RFKILL_TYPE_BLUETOOTH);
713
714 if (!ehotk->eeepc_bluetooth_rfkill)
715 goto bluetooth_fail;
716
717 ehotk->eeepc_bluetooth_rfkill->name = "eeepc-bluetooth";
718 ehotk->eeepc_bluetooth_rfkill->toggle_radio =
719 eeepc_bluetooth_rfkill_set;
720 ehotk->eeepc_bluetooth_rfkill->get_state =
721 eeepc_bluetooth_rfkill_state;
722 if (get_acpi(CM_ASL_BLUETOOTH) == 1) {
723 ehotk->eeepc_bluetooth_rfkill->state =
724 RFKILL_STATE_UNBLOCKED;
725 rfkill_set_default(RFKILL_TYPE_BLUETOOTH,
726 RFKILL_STATE_UNBLOCKED);
727 } else {
728 ehotk->eeepc_bluetooth_rfkill->state =
729 RFKILL_STATE_SOFT_BLOCKED;
730 rfkill_set_default(RFKILL_TYPE_BLUETOOTH,
731 RFKILL_STATE_SOFT_BLOCKED);
732 }
733
734 result = rfkill_register(ehotk->eeepc_bluetooth_rfkill);
735 if (result)
736 goto bluetooth_fail;
737 }
738
739 return 0;
740
741 bluetooth_fail:
742 if (ehotk->eeepc_bluetooth_rfkill)
743 rfkill_free(ehotk->eeepc_bluetooth_rfkill);
744 rfkill_unregister(ehotk->eeepc_wlan_rfkill);
745 ehotk->eeepc_wlan_rfkill = NULL;
746 wlan_fail:
747 if (ehotk->eeepc_wlan_rfkill)
748 rfkill_free(ehotk->eeepc_wlan_rfkill);
749 ehotk_fail:
750 kfree(ehotk);
751 ehotk = NULL;
752
753 return result;
754 }
755
756 static int eeepc_hotk_remove(struct acpi_device *device, int type)
757 {
758 acpi_status status = 0;
759
760 if (!device || !acpi_driver_data(device))
761 return -EINVAL;
762 status = acpi_remove_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY,
763 eeepc_hotk_notify);
764 if (ACPI_FAILURE(status))
765 printk(EEEPC_ERR "Error removing notify handler\n");
766
767 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P6");
768 eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P7");
769
770 kfree(ehotk);
771 return 0;
772 }
773
774 /*
775 * Hwmon
776 */
777 static int eeepc_get_fan_pwm(void)
778 {
779 int value = 0;
780
781 read_acpi_int(NULL, EEEPC_EC_FAN_PWM, &value);
782 value = value * 255 / 100;
783 return (value);
784 }
785
786 static void eeepc_set_fan_pwm(int value)
787 {
788 value = SENSORS_LIMIT(value, 0, 255);
789 value = value * 100 / 255;
790 ec_write(EEEPC_EC_SC02, value);
791 }
792
793 static int eeepc_get_fan_rpm(void)
794 {
795 int high = 0;
796 int low = 0;
797
798 read_acpi_int(NULL, EEEPC_EC_FAN_HRPM, &high);
799 read_acpi_int(NULL, EEEPC_EC_FAN_LRPM, &low);
800 return (high << 8 | low);
801 }
802
803 static int eeepc_get_fan_ctrl(void)
804 {
805 int value = 0;
806
807 read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value);
808 return ((value & 0x02 ? 1 : 0));
809 }
810
811 static void eeepc_set_fan_ctrl(int manual)
812 {
813 int value = 0;
814
815 read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value);
816 if (manual)
817 value |= 0x02;
818 else
819 value &= ~0x02;
820 ec_write(EEEPC_EC_SFB3, value);
821 }
822
823 static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
824 {
825 int rv, value;
826
827 rv = parse_arg(buf, count, &value);
828 if (rv > 0)
829 set(value);
830 return rv;
831 }
832
833 static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
834 {
835 return sprintf(buf, "%d\n", get());
836 }
837
838 #define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \
839 static ssize_t show_##_name(struct device *dev, \
840 struct device_attribute *attr, \
841 char *buf) \
842 { \
843 return show_sys_hwmon(_set, buf); \
844 } \
845 static ssize_t store_##_name(struct device *dev, \
846 struct device_attribute *attr, \
847 const char *buf, size_t count) \
848 { \
849 return store_sys_hwmon(_get, buf, count); \
850 } \
851 static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
852
853 EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
854 EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
855 eeepc_get_fan_pwm, eeepc_set_fan_pwm);
856 EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
857 eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
858
859 static ssize_t
860 show_name(struct device *dev, struct device_attribute *attr, char *buf)
861 {
862 return sprintf(buf, "eeepc\n");
863 }
864 static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
865
866 static struct attribute *hwmon_attributes[] = {
867 &sensor_dev_attr_pwm1.dev_attr.attr,
868 &sensor_dev_attr_fan1_input.dev_attr.attr,
869 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
870 &sensor_dev_attr_name.dev_attr.attr,
871 NULL
872 };
873
874 static struct attribute_group hwmon_attribute_group = {
875 .attrs = hwmon_attributes
876 };
877
878 /*
879 * exit/init
880 */
881 static void eeepc_backlight_exit(void)
882 {
883 if (eeepc_backlight_device)
884 backlight_device_unregister(eeepc_backlight_device);
885 eeepc_backlight_device = NULL;
886 }
887
888 static void eeepc_rfkill_exit(void)
889 {
890 if (ehotk->eeepc_wlan_rfkill)
891 rfkill_unregister(ehotk->eeepc_wlan_rfkill);
892 if (ehotk->eeepc_bluetooth_rfkill)
893 rfkill_unregister(ehotk->eeepc_bluetooth_rfkill);
894 }
895
896 static void eeepc_input_exit(void)
897 {
898 if (ehotk->inputdev)
899 input_unregister_device(ehotk->inputdev);
900 }
901
902 static void eeepc_hwmon_exit(void)
903 {
904 struct device *hwmon;
905
906 hwmon = eeepc_hwmon_device;
907 if (!hwmon)
908 return ;
909 sysfs_remove_group(&hwmon->kobj,
910 &hwmon_attribute_group);
911 hwmon_device_unregister(hwmon);
912 eeepc_hwmon_device = NULL;
913 }
914
915 static void __exit eeepc_laptop_exit(void)
916 {
917 eeepc_backlight_exit();
918 eeepc_rfkill_exit();
919 eeepc_input_exit();
920 eeepc_hwmon_exit();
921 acpi_bus_unregister_driver(&eeepc_hotk_driver);
922 sysfs_remove_group(&platform_device->dev.kobj,
923 &platform_attribute_group);
924 platform_device_unregister(platform_device);
925 platform_driver_unregister(&platform_driver);
926 }
927
928 static int eeepc_backlight_init(struct device *dev)
929 {
930 struct backlight_device *bd;
931
932 bd = backlight_device_register(EEEPC_HOTK_FILE, dev,
933 NULL, &eeepcbl_ops);
934 if (IS_ERR(bd)) {
935 printk(EEEPC_ERR
936 "Could not register eeepc backlight device\n");
937 eeepc_backlight_device = NULL;
938 return PTR_ERR(bd);
939 }
940 eeepc_backlight_device = bd;
941 bd->props.max_brightness = 15;
942 bd->props.brightness = read_brightness(NULL);
943 bd->props.power = FB_BLANK_UNBLANK;
944 backlight_update_status(bd);
945 return 0;
946 }
947
948 static int eeepc_hwmon_init(struct device *dev)
949 {
950 struct device *hwmon;
951 int result;
952
953 hwmon = hwmon_device_register(dev);
954 if (IS_ERR(hwmon)) {
955 printk(EEEPC_ERR
956 "Could not register eeepc hwmon device\n");
957 eeepc_hwmon_device = NULL;
958 return PTR_ERR(hwmon);
959 }
960 eeepc_hwmon_device = hwmon;
961 result = sysfs_create_group(&hwmon->kobj,
962 &hwmon_attribute_group);
963 if (result)
964 eeepc_hwmon_exit();
965 return result;
966 }
967
968 static int __init eeepc_laptop_init(void)
969 {
970 struct device *dev;
971 int result;
972
973 if (acpi_disabled)
974 return -ENODEV;
975 result = acpi_bus_register_driver(&eeepc_hotk_driver);
976 if (result < 0)
977 return result;
978 if (!ehotk) {
979 acpi_bus_unregister_driver(&eeepc_hotk_driver);
980 return -ENODEV;
981 }
982 dev = acpi_get_physical_device(ehotk->device->handle);
983
984 if (!acpi_video_backlight_support()) {
985 result = eeepc_backlight_init(dev);
986 if (result)
987 goto fail_backlight;
988 } else
989 printk(EEEPC_INFO "Backlight controlled by ACPI video "
990 "driver\n");
991
992 result = eeepc_hwmon_init(dev);
993 if (result)
994 goto fail_hwmon;
995 /* Register platform stuff */
996 result = platform_driver_register(&platform_driver);
997 if (result)
998 goto fail_platform_driver;
999 platform_device = platform_device_alloc(EEEPC_HOTK_FILE, -1);
1000 if (!platform_device) {
1001 result = -ENOMEM;
1002 goto fail_platform_device1;
1003 }
1004 result = platform_device_add(platform_device);
1005 if (result)
1006 goto fail_platform_device2;
1007 result = sysfs_create_group(&platform_device->dev.kobj,
1008 &platform_attribute_group);
1009 if (result)
1010 goto fail_sysfs;
1011 return 0;
1012 fail_sysfs:
1013 platform_device_del(platform_device);
1014 fail_platform_device2:
1015 platform_device_put(platform_device);
1016 fail_platform_device1:
1017 platform_driver_unregister(&platform_driver);
1018 fail_platform_driver:
1019 eeepc_hwmon_exit();
1020 fail_hwmon:
1021 eeepc_backlight_exit();
1022 fail_backlight:
1023 eeepc_input_exit();
1024 eeepc_rfkill_exit();
1025 return result;
1026 }
1027
1028 module_init(eeepc_laptop_init);
1029 module_exit(eeepc_laptop_exit);
Linux kernel - Deliverables
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