aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/platform/x86/eeepc-laptop.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/platform/x86/eeepc-laptop.c')
-rw-r--r--drivers/platform/x86/eeepc-laptop.c872
1 files changed, 872 insertions, 0 deletions
diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
new file mode 100644
index 000000000000..02fe2b8b8939
--- /dev/null
+++ b/drivers/platform/x86/eeepc-laptop.c
@@ -0,0 +1,872 @@
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
34#define EEEPC_LAPTOP_VERSION "0.1"
35
36#define EEEPC_HOTK_NAME "Eee PC Hotkey Driver"
37#define EEEPC_HOTK_FILE "eeepc"
38#define EEEPC_HOTK_CLASS "hotkey"
39#define EEEPC_HOTK_DEVICE_NAME "Hotkey"
40#define EEEPC_HOTK_HID "ASUS010"
41
42#define EEEPC_LOG EEEPC_HOTK_FILE ": "
43#define EEEPC_ERR KERN_ERR EEEPC_LOG
44#define EEEPC_WARNING KERN_WARNING EEEPC_LOG
45#define EEEPC_NOTICE KERN_NOTICE EEEPC_LOG
46#define EEEPC_INFO KERN_INFO EEEPC_LOG
47
48/*
49 * Definitions for Asus EeePC
50 */
51#define NOTIFY_WLAN_ON 0x10
52#define NOTIFY_BRN_MIN 0x20
53#define NOTIFY_BRN_MAX 0x2f
54
55enum {
56 DISABLE_ASL_WLAN = 0x0001,
57 DISABLE_ASL_BLUETOOTH = 0x0002,
58 DISABLE_ASL_IRDA = 0x0004,
59 DISABLE_ASL_CAMERA = 0x0008,
60 DISABLE_ASL_TV = 0x0010,
61 DISABLE_ASL_GPS = 0x0020,
62 DISABLE_ASL_DISPLAYSWITCH = 0x0040,
63 DISABLE_ASL_MODEM = 0x0080,
64 DISABLE_ASL_CARDREADER = 0x0100
65};
66
67enum {
68 CM_ASL_WLAN = 0,
69 CM_ASL_BLUETOOTH,
70 CM_ASL_IRDA,
71 CM_ASL_1394,
72 CM_ASL_CAMERA,
73 CM_ASL_TV,
74 CM_ASL_GPS,
75 CM_ASL_DVDROM,
76 CM_ASL_DISPLAYSWITCH,
77 CM_ASL_PANELBRIGHT,
78 CM_ASL_BIOSFLASH,
79 CM_ASL_ACPIFLASH,
80 CM_ASL_CPUFV,
81 CM_ASL_CPUTEMPERATURE,
82 CM_ASL_FANCPU,
83 CM_ASL_FANCHASSIS,
84 CM_ASL_USBPORT1,
85 CM_ASL_USBPORT2,
86 CM_ASL_USBPORT3,
87 CM_ASL_MODEM,
88 CM_ASL_CARDREADER,
89 CM_ASL_LID
90};
91
92static const char *cm_getv[] = {
93 "WLDG", NULL, NULL, NULL,
94 "CAMG", NULL, NULL, NULL,
95 NULL, "PBLG", NULL, NULL,
96 "CFVG", NULL, NULL, NULL,
97 "USBG", NULL, NULL, "MODG",
98 "CRDG", "LIDG"
99};
100
101static const char *cm_setv[] = {
102 "WLDS", NULL, NULL, NULL,
103 "CAMS", NULL, NULL, NULL,
104 "SDSP", "PBLS", "HDPS", NULL,
105 "CFVS", NULL, NULL, NULL,
106 "USBG", NULL, NULL, "MODS",
107 "CRDS", NULL
108};
109
110#define EEEPC_EC "\\_SB.PCI0.SBRG.EC0."
111
112#define EEEPC_EC_FAN_PWM EEEPC_EC "SC02" /* Fan PWM duty cycle (%) */
113#define EEEPC_EC_SC02 0x63
114#define EEEPC_EC_FAN_HRPM EEEPC_EC "SC05" /* High byte, fan speed (RPM) */
115#define EEEPC_EC_FAN_LRPM EEEPC_EC "SC06" /* Low byte, fan speed (RPM) */
116#define EEEPC_EC_FAN_CTRL EEEPC_EC "SFB3" /* Byte containing SF25 */
117#define EEEPC_EC_SFB3 0xD3
118
119/*
120 * This is the main structure, we can use it to store useful information
121 * about the hotk device
122 */
123struct eeepc_hotk {
124 struct acpi_device *device; /* the device we are in */
125 acpi_handle handle; /* the handle of the hotk device */
126 u32 cm_supported; /* the control methods supported
127 by this BIOS */
128 uint init_flag; /* Init flags */
129 u16 event_count[128]; /* count for each event */
130 struct input_dev *inputdev;
131 u16 *keycode_map;
132 struct rfkill *eeepc_wlan_rfkill;
133 struct rfkill *eeepc_bluetooth_rfkill;
134};
135
136/* The actual device the driver binds to */
137static struct eeepc_hotk *ehotk;
138
139/* Platform device/driver */
140static struct platform_driver platform_driver = {
141 .driver = {
142 .name = EEEPC_HOTK_FILE,
143 .owner = THIS_MODULE,
144 }
145};
146
147static struct platform_device *platform_device;
148
149struct key_entry {
150 char type;
151 u8 code;
152 u16 keycode;
153};
154
155enum { KE_KEY, KE_END };
156
157static struct key_entry eeepc_keymap[] = {
158 /* Sleep already handled via generic ACPI code */
159 {KE_KEY, 0x10, KEY_WLAN },
160 {KE_KEY, 0x12, KEY_PROG1 },
161 {KE_KEY, 0x13, KEY_MUTE },
162 {KE_KEY, 0x14, KEY_VOLUMEDOWN },
163 {KE_KEY, 0x15, KEY_VOLUMEUP },
164 {KE_KEY, 0x30, KEY_SWITCHVIDEOMODE },
165 {KE_KEY, 0x31, KEY_SWITCHVIDEOMODE },
166 {KE_KEY, 0x32, KEY_SWITCHVIDEOMODE },
167 {KE_END, 0},
168};
169
170/*
171 * The hotkey driver declaration
172 */
173static int eeepc_hotk_add(struct acpi_device *device);
174static int eeepc_hotk_remove(struct acpi_device *device, int type);
175
176static const struct acpi_device_id eeepc_device_ids[] = {
177 {EEEPC_HOTK_HID, 0},
178 {"", 0},
179};
180MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
181
182static struct acpi_driver eeepc_hotk_driver = {
183 .name = EEEPC_HOTK_NAME,
184 .class = EEEPC_HOTK_CLASS,
185 .ids = eeepc_device_ids,
186 .ops = {
187 .add = eeepc_hotk_add,
188 .remove = eeepc_hotk_remove,
189 },
190};
191
192/* The backlight device /sys/class/backlight */
193static struct backlight_device *eeepc_backlight_device;
194
195/* The hwmon device */
196static struct device *eeepc_hwmon_device;
197
198/*
199 * The backlight class declaration
200 */
201static int read_brightness(struct backlight_device *bd);
202static int update_bl_status(struct backlight_device *bd);
203static struct backlight_ops eeepcbl_ops = {
204 .get_brightness = read_brightness,
205 .update_status = update_bl_status,
206};
207
208MODULE_AUTHOR("Corentin Chary, Eric Cooper");
209MODULE_DESCRIPTION(EEEPC_HOTK_NAME);
210MODULE_LICENSE("GPL");
211
212/*
213 * ACPI Helpers
214 */
215static int write_acpi_int(acpi_handle handle, const char *method, int val,
216 struct acpi_buffer *output)
217{
218 struct acpi_object_list params;
219 union acpi_object in_obj;
220 acpi_status status;
221
222 params.count = 1;
223 params.pointer = &in_obj;
224 in_obj.type = ACPI_TYPE_INTEGER;
225 in_obj.integer.value = val;
226
227 status = acpi_evaluate_object(handle, (char *)method, &params, output);
228 return (status == AE_OK ? 0 : -1);
229}
230
231static int read_acpi_int(acpi_handle handle, const char *method, int *val)
232{
233 acpi_status status;
234 unsigned long long result;
235
236 status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
237 if (ACPI_FAILURE(status)) {
238 *val = -1;
239 return -1;
240 } else {
241 *val = result;
242 return 0;
243 }
244}
245
246static int set_acpi(int cm, int value)
247{
248 if (ehotk->cm_supported & (0x1 << cm)) {
249 const char *method = cm_setv[cm];
250 if (method == NULL)
251 return -ENODEV;
252 if (write_acpi_int(ehotk->handle, method, value, NULL))
253 printk(EEEPC_WARNING "Error writing %s\n", method);
254 }
255 return 0;
256}
257
258static int get_acpi(int cm)
259{
260 int value = -1;
261 if ((ehotk->cm_supported & (0x1 << cm))) {
262 const char *method = cm_getv[cm];
263 if (method == NULL)
264 return -ENODEV;
265 if (read_acpi_int(ehotk->handle, method, &value))
266 printk(EEEPC_WARNING "Error reading %s\n", method);
267 }
268 return value;
269}
270
271/*
272 * Backlight
273 */
274static int read_brightness(struct backlight_device *bd)
275{
276 return get_acpi(CM_ASL_PANELBRIGHT);
277}
278
279static int set_brightness(struct backlight_device *bd, int value)
280{
281 value = max(0, min(15, value));
282 return set_acpi(CM_ASL_PANELBRIGHT, value);
283}
284
285static int update_bl_status(struct backlight_device *bd)
286{
287 return set_brightness(bd, bd->props.brightness);
288}
289
290/*
291 * Rfkill helpers
292 */
293
294static int eeepc_wlan_rfkill_set(void *data, enum rfkill_state state)
295{
296 if (state == RFKILL_STATE_SOFT_BLOCKED)
297 return set_acpi(CM_ASL_WLAN, 0);
298 else
299 return set_acpi(CM_ASL_WLAN, 1);
300}
301
302static int eeepc_wlan_rfkill_state(void *data, enum rfkill_state *state)
303{
304 if (get_acpi(CM_ASL_WLAN) == 1)
305 *state = RFKILL_STATE_UNBLOCKED;
306 else
307 *state = RFKILL_STATE_SOFT_BLOCKED;
308 return 0;
309}
310
311static int eeepc_bluetooth_rfkill_set(void *data, enum rfkill_state state)
312{
313 if (state == RFKILL_STATE_SOFT_BLOCKED)
314 return set_acpi(CM_ASL_BLUETOOTH, 0);
315 else
316 return set_acpi(CM_ASL_BLUETOOTH, 1);
317}
318
319static int eeepc_bluetooth_rfkill_state(void *data, enum rfkill_state *state)
320{
321 if (get_acpi(CM_ASL_BLUETOOTH) == 1)
322 *state = RFKILL_STATE_UNBLOCKED;
323 else
324 *state = RFKILL_STATE_SOFT_BLOCKED;
325 return 0;
326}
327
328/*
329 * Sys helpers
330 */
331static int parse_arg(const char *buf, unsigned long count, int *val)
332{
333 if (!count)
334 return 0;
335 if (sscanf(buf, "%i", val) != 1)
336 return -EINVAL;
337 return count;
338}
339
340static ssize_t store_sys_acpi(int cm, const char *buf, size_t count)
341{
342 int rv, value;
343
344 rv = parse_arg(buf, count, &value);
345 if (rv > 0)
346 set_acpi(cm, value);
347 return rv;
348}
349
350static ssize_t show_sys_acpi(int cm, char *buf)
351{
352 return sprintf(buf, "%d\n", get_acpi(cm));
353}
354
355#define EEEPC_CREATE_DEVICE_ATTR(_name, _cm) \
356 static ssize_t show_##_name(struct device *dev, \
357 struct device_attribute *attr, \
358 char *buf) \
359 { \
360 return show_sys_acpi(_cm, buf); \
361 } \
362 static ssize_t store_##_name(struct device *dev, \
363 struct device_attribute *attr, \
364 const char *buf, size_t count) \
365 { \
366 return store_sys_acpi(_cm, buf, count); \
367 } \
368 static struct device_attribute dev_attr_##_name = { \
369 .attr = { \
370 .name = __stringify(_name), \
371 .mode = 0644 }, \
372 .show = show_##_name, \
373 .store = store_##_name, \
374 }
375
376EEEPC_CREATE_DEVICE_ATTR(camera, CM_ASL_CAMERA);
377EEEPC_CREATE_DEVICE_ATTR(cardr, CM_ASL_CARDREADER);
378EEEPC_CREATE_DEVICE_ATTR(disp, CM_ASL_DISPLAYSWITCH);
379
380static struct attribute *platform_attributes[] = {
381 &dev_attr_camera.attr,
382 &dev_attr_cardr.attr,
383 &dev_attr_disp.attr,
384 NULL
385};
386
387static struct attribute_group platform_attribute_group = {
388 .attrs = platform_attributes
389};
390
391/*
392 * Hotkey functions
393 */
394static struct key_entry *eepc_get_entry_by_scancode(int code)
395{
396 struct key_entry *key;
397
398 for (key = eeepc_keymap; key->type != KE_END; key++)
399 if (code == key->code)
400 return key;
401
402 return NULL;
403}
404
405static struct key_entry *eepc_get_entry_by_keycode(int code)
406{
407 struct key_entry *key;
408
409 for (key = eeepc_keymap; key->type != KE_END; key++)
410 if (code == key->keycode && key->type == KE_KEY)
411 return key;
412
413 return NULL;
414}
415
416static int eeepc_getkeycode(struct input_dev *dev, int scancode, int *keycode)
417{
418 struct key_entry *key = eepc_get_entry_by_scancode(scancode);
419
420 if (key && key->type == KE_KEY) {
421 *keycode = key->keycode;
422 return 0;
423 }
424
425 return -EINVAL;
426}
427
428static int eeepc_setkeycode(struct input_dev *dev, int scancode, int keycode)
429{
430 struct key_entry *key;
431 int old_keycode;
432
433 if (keycode < 0 || keycode > KEY_MAX)
434 return -EINVAL;
435
436 key = eepc_get_entry_by_scancode(scancode);
437 if (key && key->type == KE_KEY) {
438 old_keycode = key->keycode;
439 key->keycode = keycode;
440 set_bit(keycode, dev->keybit);
441 if (!eepc_get_entry_by_keycode(old_keycode))
442 clear_bit(old_keycode, dev->keybit);
443 return 0;
444 }
445
446 return -EINVAL;
447}
448
449static int eeepc_hotk_check(void)
450{
451 const struct key_entry *key;
452 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
453 int result;
454
455 result = acpi_bus_get_status(ehotk->device);
456 if (result)
457 return result;
458 if (ehotk->device->status.present) {
459 if (write_acpi_int(ehotk->handle, "INIT", ehotk->init_flag,
460 &buffer)) {
461 printk(EEEPC_ERR "Hotkey initialization failed\n");
462 return -ENODEV;
463 } else {
464 printk(EEEPC_NOTICE "Hotkey init flags 0x%x\n",
465 ehotk->init_flag);
466 }
467 /* get control methods supported */
468 if (read_acpi_int(ehotk->handle, "CMSG"
469 , &ehotk->cm_supported)) {
470 printk(EEEPC_ERR
471 "Get control methods supported failed\n");
472 return -ENODEV;
473 } else {
474 printk(EEEPC_INFO
475 "Get control methods supported: 0x%x\n",
476 ehotk->cm_supported);
477 }
478 ehotk->inputdev = input_allocate_device();
479 if (!ehotk->inputdev) {
480 printk(EEEPC_INFO "Unable to allocate input device\n");
481 return 0;
482 }
483 ehotk->inputdev->name = "Asus EeePC extra buttons";
484 ehotk->inputdev->phys = EEEPC_HOTK_FILE "/input0";
485 ehotk->inputdev->id.bustype = BUS_HOST;
486 ehotk->inputdev->getkeycode = eeepc_getkeycode;
487 ehotk->inputdev->setkeycode = eeepc_setkeycode;
488
489 for (key = eeepc_keymap; key->type != KE_END; key++) {
490 switch (key->type) {
491 case KE_KEY:
492 set_bit(EV_KEY, ehotk->inputdev->evbit);
493 set_bit(key->keycode, ehotk->inputdev->keybit);
494 break;
495 }
496 }
497 result = input_register_device(ehotk->inputdev);
498 if (result) {
499 printk(EEEPC_INFO "Unable to register input device\n");
500 input_free_device(ehotk->inputdev);
501 return 0;
502 }
503 } else {
504 printk(EEEPC_ERR "Hotkey device not present, aborting\n");
505 return -EINVAL;
506 }
507 return 0;
508}
509
510static void notify_brn(void)
511{
512 struct backlight_device *bd = eeepc_backlight_device;
513 bd->props.brightness = read_brightness(bd);
514}
515
516static void eeepc_hotk_notify(acpi_handle handle, u32 event, void *data)
517{
518 static struct key_entry *key;
519 if (!ehotk)
520 return;
521 if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX)
522 notify_brn();
523 acpi_bus_generate_proc_event(ehotk->device, event,
524 ehotk->event_count[event % 128]++);
525 if (ehotk->inputdev) {
526 key = eepc_get_entry_by_scancode(event);
527 if (key) {
528 switch (key->type) {
529 case KE_KEY:
530 input_report_key(ehotk->inputdev, key->keycode,
531 1);
532 input_sync(ehotk->inputdev);
533 input_report_key(ehotk->inputdev, key->keycode,
534 0);
535 input_sync(ehotk->inputdev);
536 break;
537 }
538 }
539 }
540}
541
542static int eeepc_hotk_add(struct acpi_device *device)
543{
544 acpi_status status = AE_OK;
545 int result;
546
547 if (!device)
548 return -EINVAL;
549 printk(EEEPC_NOTICE EEEPC_HOTK_NAME "\n");
550 ehotk = kzalloc(sizeof(struct eeepc_hotk), GFP_KERNEL);
551 if (!ehotk)
552 return -ENOMEM;
553 ehotk->init_flag = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
554 ehotk->handle = device->handle;
555 strcpy(acpi_device_name(device), EEEPC_HOTK_DEVICE_NAME);
556 strcpy(acpi_device_class(device), EEEPC_HOTK_CLASS);
557 device->driver_data = ehotk;
558 ehotk->device = device;
559 result = eeepc_hotk_check();
560 if (result)
561 goto end;
562 status = acpi_install_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY,
563 eeepc_hotk_notify, ehotk);
564 if (ACPI_FAILURE(status))
565 printk(EEEPC_ERR "Error installing notify handler\n");
566
567 if (get_acpi(CM_ASL_WLAN) != -1) {
568 ehotk->eeepc_wlan_rfkill = rfkill_allocate(&device->dev,
569 RFKILL_TYPE_WLAN);
570
571 if (!ehotk->eeepc_wlan_rfkill)
572 goto end;
573
574 ehotk->eeepc_wlan_rfkill->name = "eeepc-wlan";
575 ehotk->eeepc_wlan_rfkill->toggle_radio = eeepc_wlan_rfkill_set;
576 ehotk->eeepc_wlan_rfkill->get_state = eeepc_wlan_rfkill_state;
577 if (get_acpi(CM_ASL_WLAN) == 1)
578 ehotk->eeepc_wlan_rfkill->state =
579 RFKILL_STATE_UNBLOCKED;
580 else
581 ehotk->eeepc_wlan_rfkill->state =
582 RFKILL_STATE_SOFT_BLOCKED;
583 rfkill_register(ehotk->eeepc_wlan_rfkill);
584 }
585
586 if (get_acpi(CM_ASL_BLUETOOTH) != -1) {
587 ehotk->eeepc_bluetooth_rfkill =
588 rfkill_allocate(&device->dev, RFKILL_TYPE_BLUETOOTH);
589
590 if (!ehotk->eeepc_bluetooth_rfkill)
591 goto end;
592
593 ehotk->eeepc_bluetooth_rfkill->name = "eeepc-bluetooth";
594 ehotk->eeepc_bluetooth_rfkill->toggle_radio =
595 eeepc_bluetooth_rfkill_set;
596 ehotk->eeepc_bluetooth_rfkill->get_state =
597 eeepc_bluetooth_rfkill_state;
598 if (get_acpi(CM_ASL_BLUETOOTH) == 1)
599 ehotk->eeepc_bluetooth_rfkill->state =
600 RFKILL_STATE_UNBLOCKED;
601 else
602 ehotk->eeepc_bluetooth_rfkill->state =
603 RFKILL_STATE_SOFT_BLOCKED;
604 rfkill_register(ehotk->eeepc_bluetooth_rfkill);
605 }
606
607 end:
608 if (result) {
609 kfree(ehotk);
610 ehotk = NULL;
611 }
612 return result;
613}
614
615static int eeepc_hotk_remove(struct acpi_device *device, int type)
616{
617 acpi_status status = 0;
618
619 if (!device || !acpi_driver_data(device))
620 return -EINVAL;
621 status = acpi_remove_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY,
622 eeepc_hotk_notify);
623 if (ACPI_FAILURE(status))
624 printk(EEEPC_ERR "Error removing notify handler\n");
625 kfree(ehotk);
626 return 0;
627}
628
629/*
630 * Hwmon
631 */
632static int eeepc_get_fan_pwm(void)
633{
634 int value = 0;
635
636 read_acpi_int(NULL, EEEPC_EC_FAN_PWM, &value);
637 value = value * 255 / 100;
638 return (value);
639}
640
641static void eeepc_set_fan_pwm(int value)
642{
643 value = SENSORS_LIMIT(value, 0, 255);
644 value = value * 100 / 255;
645 ec_write(EEEPC_EC_SC02, value);
646}
647
648static int eeepc_get_fan_rpm(void)
649{
650 int high = 0;
651 int low = 0;
652
653 read_acpi_int(NULL, EEEPC_EC_FAN_HRPM, &high);
654 read_acpi_int(NULL, EEEPC_EC_FAN_LRPM, &low);
655 return (high << 8 | low);
656}
657
658static int eeepc_get_fan_ctrl(void)
659{
660 int value = 0;
661
662 read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value);
663 return ((value & 0x02 ? 1 : 0));
664}
665
666static void eeepc_set_fan_ctrl(int manual)
667{
668 int value = 0;
669
670 read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value);
671 if (manual)
672 value |= 0x02;
673 else
674 value &= ~0x02;
675 ec_write(EEEPC_EC_SFB3, value);
676}
677
678static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
679{
680 int rv, value;
681
682 rv = parse_arg(buf, count, &value);
683 if (rv > 0)
684 set(value);
685 return rv;
686}
687
688static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
689{
690 return sprintf(buf, "%d\n", get());
691}
692
693#define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \
694 static ssize_t show_##_name(struct device *dev, \
695 struct device_attribute *attr, \
696 char *buf) \
697 { \
698 return show_sys_hwmon(_set, buf); \
699 } \
700 static ssize_t store_##_name(struct device *dev, \
701 struct device_attribute *attr, \
702 const char *buf, size_t count) \
703 { \
704 return store_sys_hwmon(_get, buf, count); \
705 } \
706 static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
707
708EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
709EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
710 eeepc_get_fan_pwm, eeepc_set_fan_pwm);
711EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
712 eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
713
714static ssize_t
715show_name(struct device *dev, struct device_attribute *attr, char *buf)
716{
717 return sprintf(buf, "eeepc\n");
718}
719static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
720
721static struct attribute *hwmon_attributes[] = {
722 &sensor_dev_attr_pwm1.dev_attr.attr,
723 &sensor_dev_attr_fan1_input.dev_attr.attr,
724 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
725 &sensor_dev_attr_name.dev_attr.attr,
726 NULL
727};
728
729static struct attribute_group hwmon_attribute_group = {
730 .attrs = hwmon_attributes
731};
732
733/*
734 * exit/init
735 */
736static void eeepc_backlight_exit(void)
737{
738 if (eeepc_backlight_device)
739 backlight_device_unregister(eeepc_backlight_device);
740 if (ehotk->inputdev)
741 input_unregister_device(ehotk->inputdev);
742 if (ehotk->eeepc_wlan_rfkill)
743 rfkill_unregister(ehotk->eeepc_wlan_rfkill);
744 if (ehotk->eeepc_bluetooth_rfkill)
745 rfkill_unregister(ehotk->eeepc_bluetooth_rfkill);
746 eeepc_backlight_device = NULL;
747}
748
749static void eeepc_hwmon_exit(void)
750{
751 struct device *hwmon;
752
753 hwmon = eeepc_hwmon_device;
754 if (!hwmon)
755 return ;
756 sysfs_remove_group(&hwmon->kobj,
757 &hwmon_attribute_group);
758 hwmon_device_unregister(hwmon);
759 eeepc_hwmon_device = NULL;
760}
761
762static void __exit eeepc_laptop_exit(void)
763{
764 eeepc_backlight_exit();
765 eeepc_hwmon_exit();
766 acpi_bus_unregister_driver(&eeepc_hotk_driver);
767 sysfs_remove_group(&platform_device->dev.kobj,
768 &platform_attribute_group);
769 platform_device_unregister(platform_device);
770 platform_driver_unregister(&platform_driver);
771}
772
773static int eeepc_backlight_init(struct device *dev)
774{
775 struct backlight_device *bd;
776
777 bd = backlight_device_register(EEEPC_HOTK_FILE, dev,
778 NULL, &eeepcbl_ops);
779 if (IS_ERR(bd)) {
780 printk(EEEPC_ERR
781 "Could not register eeepc backlight device\n");
782 eeepc_backlight_device = NULL;
783 return PTR_ERR(bd);
784 }
785 eeepc_backlight_device = bd;
786 bd->props.max_brightness = 15;
787 bd->props.brightness = read_brightness(NULL);
788 bd->props.power = FB_BLANK_UNBLANK;
789 backlight_update_status(bd);
790 return 0;
791}
792
793static int eeepc_hwmon_init(struct device *dev)
794{
795 struct device *hwmon;
796 int result;
797
798 hwmon = hwmon_device_register(dev);
799 if (IS_ERR(hwmon)) {
800 printk(EEEPC_ERR
801 "Could not register eeepc hwmon device\n");
802 eeepc_hwmon_device = NULL;
803 return PTR_ERR(hwmon);
804 }
805 eeepc_hwmon_device = hwmon;
806 result = sysfs_create_group(&hwmon->kobj,
807 &hwmon_attribute_group);
808 if (result)
809 eeepc_hwmon_exit();
810 return result;
811}
812
813static int __init eeepc_laptop_init(void)
814{
815 struct device *dev;
816 int result;
817
818 if (acpi_disabled)
819 return -ENODEV;
820 result = acpi_bus_register_driver(&eeepc_hotk_driver);
821 if (result < 0)
822 return result;
823 if (!ehotk) {
824 acpi_bus_unregister_driver(&eeepc_hotk_driver);
825 return -ENODEV;
826 }
827 dev = acpi_get_physical_device(ehotk->device->handle);
828
829 if (!acpi_video_backlight_support()) {
830 result = eeepc_backlight_init(dev);
831 if (result)
832 goto fail_backlight;
833 } else
834 printk(EEEPC_INFO "Backlight controlled by ACPI video "
835 "driver\n");
836
837 result = eeepc_hwmon_init(dev);
838 if (result)
839 goto fail_hwmon;
840 /* Register platform stuff */
841 result = platform_driver_register(&platform_driver);
842 if (result)
843 goto fail_platform_driver;
844 platform_device = platform_device_alloc(EEEPC_HOTK_FILE, -1);
845 if (!platform_device) {
846 result = -ENOMEM;
847 goto fail_platform_device1;
848 }
849 result = platform_device_add(platform_device);
850 if (result)
851 goto fail_platform_device2;
852 result = sysfs_create_group(&platform_device->dev.kobj,
853 &platform_attribute_group);
854 if (result)
855 goto fail_sysfs;
856 return 0;
857fail_sysfs:
858 platform_device_del(platform_device);
859fail_platform_device2:
860 platform_device_put(platform_device);
861fail_platform_device1:
862 platform_driver_unregister(&platform_driver);
863fail_platform_driver:
864 eeepc_hwmon_exit();
865fail_hwmon:
866 eeepc_backlight_exit();
867fail_backlight:
868 return result;
869}
870
871module_init(eeepc_laptop_init);
872module_exit(eeepc_laptop_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-19 15:44:40 -0500