aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/misc/asus-laptop.c
diff options
context:
space:
mode:
authorLen Brown <len.brown@intel.com>2008-12-01 00:09:47 -0500
committerLen Brown <len.brown@intel.com>2008-12-19 04:42:32 -0500
commit41b16dce390510f550a4d2b12b98e0258bbed6e2 (patch)
tree03f668f70c47e7d6319a1b5fc21aa0634254cdb1 /drivers/misc/asus-laptop.c
parent8c36790a21eec6c39c372e92c76e81865005a6ce (diff)
create drivers/platform/x86/ from drivers/misc/
Move x86 platform specific drivers from drivers/misc/ to a new home under drivers/platform/x86/. The community has been maintaining x86 vendor-specific platform specific drivers under /drivers/misc/ for a few years. The oldest ones started life under drivers/acpi. They moved out of drivers/acpi/ because they don't actually implement the ACPI specification, but either simply use ACPI, or implement vendor-specific ACPI extensions. In the future we anticipate... drivers/misc/ will go away. other architectures will create drivers/platform/<arch> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/misc/asus-laptop.c')
-rw-r--r--drivers/misc/asus-laptop.c1266
1 files changed, 0 insertions, 1266 deletions
diff --git a/drivers/misc/asus-laptop.c b/drivers/misc/asus-laptop.c
deleted file mode 100644
index 8fb8b3591048..000000000000
--- a/drivers/misc/asus-laptop.c
+++ /dev/null
@@ -1,1266 +0,0 @@
1/*
2 * asus-laptop.c - Asus Laptop Support
3 *
4 *
5 * Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
6 * Copyright (C) 2006-2007 Corentin Chary
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 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 *
23 * The development page for this driver is located at
24 * http://sourceforge.net/projects/acpi4asus/
25 *
26 * Credits:
27 * Pontus Fuchs - Helper functions, cleanup
28 * Johann Wiesner - Small compile fixes
29 * John Belmonte - ACPI code for Toshiba laptop was a good starting point.
30 * Eric Burghard - LED display support for W1N
31 * Josh Green - Light Sens support
32 * Thomas Tuttle - His first patch for led support was very helpfull
33 * Sam Lin - GPS support
34 */
35
36#include <linux/kernel.h>
37#include <linux/module.h>
38#include <linux/init.h>
39#include <linux/types.h>
40#include <linux/err.h>
41#include <linux/proc_fs.h>
42#include <linux/backlight.h>
43#include <linux/fb.h>
44#include <linux/leds.h>
45#include <linux/platform_device.h>
46#include <acpi/acpi_drivers.h>
47#include <acpi/acpi_bus.h>
48#include <asm/uaccess.h>
49
50#define ASUS_LAPTOP_VERSION "0.42"
51
52#define ASUS_HOTK_NAME "Asus Laptop Support"
53#define ASUS_HOTK_CLASS "hotkey"
54#define ASUS_HOTK_DEVICE_NAME "Hotkey"
55#define ASUS_HOTK_FILE "asus-laptop"
56#define ASUS_HOTK_PREFIX "\\_SB.ATKD."
57
58/*
59 * Some events we use, same for all Asus
60 */
61#define ATKD_BR_UP 0x10
62#define ATKD_BR_DOWN 0x20
63#define ATKD_LCD_ON 0x33
64#define ATKD_LCD_OFF 0x34
65
66/*
67 * Known bits returned by \_SB.ATKD.HWRS
68 */
69#define WL_HWRS 0x80
70#define BT_HWRS 0x100
71
72/*
73 * Flags for hotk status
74 * WL_ON and BT_ON are also used for wireless_status()
75 */
76#define WL_ON 0x01 //internal Wifi
77#define BT_ON 0x02 //internal Bluetooth
78#define MLED_ON 0x04 //mail LED
79#define TLED_ON 0x08 //touchpad LED
80#define RLED_ON 0x10 //Record LED
81#define PLED_ON 0x20 //Phone LED
82#define GLED_ON 0x40 //Gaming LED
83#define LCD_ON 0x80 //LCD backlight
84#define GPS_ON 0x100 //GPS
85
86#define ASUS_LOG ASUS_HOTK_FILE ": "
87#define ASUS_ERR KERN_ERR ASUS_LOG
88#define ASUS_WARNING KERN_WARNING ASUS_LOG
89#define ASUS_NOTICE KERN_NOTICE ASUS_LOG
90#define ASUS_INFO KERN_INFO ASUS_LOG
91#define ASUS_DEBUG KERN_DEBUG ASUS_LOG
92
93MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary");
94MODULE_DESCRIPTION(ASUS_HOTK_NAME);
95MODULE_LICENSE("GPL");
96
97/* WAPF defines the behavior of the Fn+Fx wlan key
98 * The significance of values is yet to be found, but
99 * most of the time:
100 * 0x0 will do nothing
101 * 0x1 will allow to control the device with Fn+Fx key.
102 * 0x4 will send an ACPI event (0x88) while pressing the Fn+Fx key
103 * 0x5 like 0x1 or 0x4
104 * So, if something doesn't work as you want, just try other values =)
105 */
106static uint wapf = 1;
107module_param(wapf, uint, 0644);
108MODULE_PARM_DESC(wapf, "WAPF value");
109
110#define ASUS_HANDLE(object, paths...) \
111 static acpi_handle object##_handle = NULL; \
112 static char *object##_paths[] = { paths }
113
114/* LED */
115ASUS_HANDLE(mled_set, ASUS_HOTK_PREFIX "MLED");
116ASUS_HANDLE(tled_set, ASUS_HOTK_PREFIX "TLED");
117ASUS_HANDLE(rled_set, ASUS_HOTK_PREFIX "RLED"); /* W1JC */
118ASUS_HANDLE(pled_set, ASUS_HOTK_PREFIX "PLED"); /* A7J */
119ASUS_HANDLE(gled_set, ASUS_HOTK_PREFIX "GLED"); /* G1, G2 (probably) */
120
121/* LEDD */
122ASUS_HANDLE(ledd_set, ASUS_HOTK_PREFIX "SLCM");
123
124/* Bluetooth and WLAN
125 * WLED and BLED are not handled like other XLED, because in some dsdt
126 * they also control the WLAN/Bluetooth device.
127 */
128ASUS_HANDLE(wl_switch, ASUS_HOTK_PREFIX "WLED");
129ASUS_HANDLE(bt_switch, ASUS_HOTK_PREFIX "BLED");
130ASUS_HANDLE(wireless_status, ASUS_HOTK_PREFIX "RSTS"); /* All new models */
131
132/* Brightness */
133ASUS_HANDLE(brightness_set, ASUS_HOTK_PREFIX "SPLV");
134ASUS_HANDLE(brightness_get, ASUS_HOTK_PREFIX "GPLV");
135
136/* Backlight */
137ASUS_HANDLE(lcd_switch, "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */
138 "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */
139 "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */
140 "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */
141 "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */
142 "\\_SB.PCI0.LPCB.EC0._Q0E", /* P30/P35 */
143 "\\_SB.PCI0.PX40.Q10", /* S1x */
144 "\\Q10"); /* A2x, L2D, L3D, M2E */
145
146/* Display */
147ASUS_HANDLE(display_set, ASUS_HOTK_PREFIX "SDSP");
148ASUS_HANDLE(display_get, "\\_SB.PCI0.P0P1.VGA.GETD", /* A6B, A6K A6R A7D F3JM L4R M6R A3G
149 M6A M6V VX-1 V6J V6V W3Z */
150 "\\_SB.PCI0.P0P2.VGA.GETD", /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V
151 S5A M5A z33A W1Jc W2V G1 */
152 "\\_SB.PCI0.P0P3.VGA.GETD", /* A6V A6Q */
153 "\\_SB.PCI0.P0PA.VGA.GETD", /* A6T, A6M */
154 "\\_SB.PCI0.PCI1.VGAC.NMAP", /* L3C */
155 "\\_SB.PCI0.VGA.GETD", /* Z96F */
156 "\\ACTD", /* A2D */
157 "\\ADVG", /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */
158 "\\DNXT", /* P30 */
159 "\\INFB", /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */
160 "\\SSTE"); /* A3F A6F A3N A3L M6N W3N W6A */
161
162ASUS_HANDLE(ls_switch, ASUS_HOTK_PREFIX "ALSC"); /* Z71A Z71V */
163ASUS_HANDLE(ls_level, ASUS_HOTK_PREFIX "ALSL"); /* Z71A Z71V */
164
165/* GPS */
166/* R2H use different handle for GPS on/off */
167ASUS_HANDLE(gps_on, ASUS_HOTK_PREFIX "SDON"); /* R2H */
168ASUS_HANDLE(gps_off, ASUS_HOTK_PREFIX "SDOF"); /* R2H */
169ASUS_HANDLE(gps_status, ASUS_HOTK_PREFIX "GPST");
170
171/*
172 * This is the main structure, we can use it to store anything interesting
173 * about the hotk device
174 */
175struct asus_hotk {
176 char *name; //laptop name
177 struct acpi_device *device; //the device we are in
178 acpi_handle handle; //the handle of the hotk device
179 char status; //status of the hotk, for LEDs, ...
180 u32 ledd_status; //status of the LED display
181 u8 light_level; //light sensor level
182 u8 light_switch; //light sensor switch value
183 u16 event_count[128]; //count for each event TODO make this better
184};
185
186/*
187 * This header is made available to allow proper configuration given model,
188 * revision number , ... this info cannot go in struct asus_hotk because it is
189 * available before the hotk
190 */
191static struct acpi_table_header *asus_info;
192
193/* The actual device the driver binds to */
194static struct asus_hotk *hotk;
195
196/*
197 * The hotkey driver declaration
198 */
199static const struct acpi_device_id asus_device_ids[] = {
200 {"ATK0100", 0},
201 {"", 0},
202};
203MODULE_DEVICE_TABLE(acpi, asus_device_ids);
204
205static int asus_hotk_add(struct acpi_device *device);
206static int asus_hotk_remove(struct acpi_device *device, int type);
207static struct acpi_driver asus_hotk_driver = {
208 .name = ASUS_HOTK_NAME,
209 .class = ASUS_HOTK_CLASS,
210 .ids = asus_device_ids,
211 .ops = {
212 .add = asus_hotk_add,
213 .remove = asus_hotk_remove,
214 },
215};
216
217/* The backlight device /sys/class/backlight */
218static struct backlight_device *asus_backlight_device;
219
220/*
221 * The backlight class declaration
222 */
223static int read_brightness(struct backlight_device *bd);
224static int update_bl_status(struct backlight_device *bd);
225static struct backlight_ops asusbl_ops = {
226 .get_brightness = read_brightness,
227 .update_status = update_bl_status,
228};
229
230/* These functions actually update the LED's, and are called from a
231 * workqueue. By doing this as separate work rather than when the LED
232 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
233 * potentially bad time, such as a timer interrupt. */
234static struct workqueue_struct *led_workqueue;
235
236#define ASUS_LED(object, ledname) \
237 static void object##_led_set(struct led_classdev *led_cdev, \
238 enum led_brightness value); \
239 static void object##_led_update(struct work_struct *ignored); \
240 static int object##_led_wk; \
241 static DECLARE_WORK(object##_led_work, object##_led_update); \
242 static struct led_classdev object##_led = { \
243 .name = "asus::" ledname, \
244 .brightness_set = object##_led_set, \
245 }
246
247ASUS_LED(mled, "mail");
248ASUS_LED(tled, "touchpad");
249ASUS_LED(rled, "record");
250ASUS_LED(pled, "phone");
251ASUS_LED(gled, "gaming");
252
253/*
254 * This function evaluates an ACPI method, given an int as parameter, the
255 * method is searched within the scope of the handle, can be NULL. The output
256 * of the method is written is output, which can also be NULL
257 *
258 * returns 0 if write is successful, -1 else.
259 */
260static int write_acpi_int(acpi_handle handle, const char *method, int val,
261 struct acpi_buffer *output)
262{
263 struct acpi_object_list params; //list of input parameters (an int here)
264 union acpi_object in_obj; //the only param we use
265 acpi_status status;
266
267 if (!handle)
268 return 0;
269
270 params.count = 1;
271 params.pointer = &in_obj;
272 in_obj.type = ACPI_TYPE_INTEGER;
273 in_obj.integer.value = val;
274
275 status = acpi_evaluate_object(handle, (char *)method, &params, output);
276 if (status == AE_OK)
277 return 0;
278 else
279 return -1;
280}
281
282static int read_wireless_status(int mask)
283{
284 unsigned long long status;
285 acpi_status rv = AE_OK;
286
287 if (!wireless_status_handle)
288 return (hotk->status & mask) ? 1 : 0;
289
290 rv = acpi_evaluate_integer(wireless_status_handle, NULL, NULL, &status);
291 if (ACPI_FAILURE(rv))
292 printk(ASUS_WARNING "Error reading Wireless status\n");
293 else
294 return (status & mask) ? 1 : 0;
295
296 return (hotk->status & mask) ? 1 : 0;
297}
298
299static int read_gps_status(void)
300{
301 unsigned long long status;
302 acpi_status rv = AE_OK;
303
304 rv = acpi_evaluate_integer(gps_status_handle, NULL, NULL, &status);
305 if (ACPI_FAILURE(rv))
306 printk(ASUS_WARNING "Error reading GPS status\n");
307 else
308 return status ? 1 : 0;
309
310 return (hotk->status & GPS_ON) ? 1 : 0;
311}
312
313/* Generic LED functions */
314static int read_status(int mask)
315{
316 /* There is a special method for both wireless devices */
317 if (mask == BT_ON || mask == WL_ON)
318 return read_wireless_status(mask);
319 else if (mask == GPS_ON)
320 return read_gps_status();
321
322 return (hotk->status & mask) ? 1 : 0;
323}
324
325static void write_status(acpi_handle handle, int out, int mask)
326{
327 hotk->status = (out) ? (hotk->status | mask) : (hotk->status & ~mask);
328
329 switch (mask) {
330 case MLED_ON:
331 out = !(out & 0x1);
332 break;
333 case GLED_ON:
334 out = (out & 0x1) + 1;
335 break;
336 case GPS_ON:
337 handle = (out) ? gps_on_handle : gps_off_handle;
338 out = 0x02;
339 break;
340 default:
341 out &= 0x1;
342 break;
343 }
344
345 if (write_acpi_int(handle, NULL, out, NULL))
346 printk(ASUS_WARNING " write failed %x\n", mask);
347}
348
349/* /sys/class/led handlers */
350#define ASUS_LED_HANDLER(object, mask) \
351 static void object##_led_set(struct led_classdev *led_cdev, \
352 enum led_brightness value) \
353 { \
354 object##_led_wk = (value > 0) ? 1 : 0; \
355 queue_work(led_workqueue, &object##_led_work); \
356 } \
357 static void object##_led_update(struct work_struct *ignored) \
358 { \
359 int value = object##_led_wk; \
360 write_status(object##_set_handle, value, (mask)); \
361 }
362
363ASUS_LED_HANDLER(mled, MLED_ON);
364ASUS_LED_HANDLER(pled, PLED_ON);
365ASUS_LED_HANDLER(rled, RLED_ON);
366ASUS_LED_HANDLER(tled, TLED_ON);
367ASUS_LED_HANDLER(gled, GLED_ON);
368
369static int get_lcd_state(void)
370{
371 return read_status(LCD_ON);
372}
373
374static int set_lcd_state(int value)
375{
376 int lcd = 0;
377 acpi_status status = 0;
378
379 lcd = value ? 1 : 0;
380
381 if (lcd == get_lcd_state())
382 return 0;
383
384 if (lcd_switch_handle) {
385 status = acpi_evaluate_object(lcd_switch_handle,
386 NULL, NULL, NULL);
387
388 if (ACPI_FAILURE(status))
389 printk(ASUS_WARNING "Error switching LCD\n");
390 }
391
392 write_status(NULL, lcd, LCD_ON);
393 return 0;
394}
395
396static void lcd_blank(int blank)
397{
398 struct backlight_device *bd = asus_backlight_device;
399
400 if (bd) {
401 bd->props.power = blank;
402 backlight_update_status(bd);
403 }
404}
405
406static int read_brightness(struct backlight_device *bd)
407{
408 unsigned long long value;
409 acpi_status rv = AE_OK;
410
411 rv = acpi_evaluate_integer(brightness_get_handle, NULL, NULL, &value);
412 if (ACPI_FAILURE(rv))
413 printk(ASUS_WARNING "Error reading brightness\n");
414
415 return value;
416}
417
418static int set_brightness(struct backlight_device *bd, int value)
419{
420 int ret = 0;
421
422 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
423 /* 0 <= value <= 15 */
424
425 if (write_acpi_int(brightness_set_handle, NULL, value, NULL)) {
426 printk(ASUS_WARNING "Error changing brightness\n");
427 ret = -EIO;
428 }
429
430 return ret;
431}
432
433static int update_bl_status(struct backlight_device *bd)
434{
435 int rv;
436 int value = bd->props.brightness;
437
438 rv = set_brightness(bd, value);
439 if (rv)
440 return rv;
441
442 value = (bd->props.power == FB_BLANK_UNBLANK) ? 1 : 0;
443 return set_lcd_state(value);
444}
445
446/*
447 * Platform device handlers
448 */
449
450/*
451 * We write our info in page, we begin at offset off and cannot write more
452 * than count bytes. We set eof to 1 if we handle those 2 values. We return the
453 * number of bytes written in page
454 */
455static ssize_t show_infos(struct device *dev,
456 struct device_attribute *attr, char *page)
457{
458 int len = 0;
459 unsigned long long temp;
460 char buf[16]; //enough for all info
461 acpi_status rv = AE_OK;
462
463 /*
464 * We use the easy way, we don't care of off and count, so we don't set eof
465 * to 1
466 */
467
468 len += sprintf(page, ASUS_HOTK_NAME " " ASUS_LAPTOP_VERSION "\n");
469 len += sprintf(page + len, "Model reference : %s\n", hotk->name);
470 /*
471 * The SFUN method probably allows the original driver to get the list
472 * of features supported by a given model. For now, 0x0100 or 0x0800
473 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
474 * The significance of others is yet to be found.
475 */
476 rv = acpi_evaluate_integer(hotk->handle, "SFUN", NULL, &temp);
477 if (!ACPI_FAILURE(rv))
478 len += sprintf(page + len, "SFUN value : 0x%04x\n",
479 (uint) temp);
480 /*
481 * Another value for userspace: the ASYM method returns 0x02 for
482 * battery low and 0x04 for battery critical, its readings tend to be
483 * more accurate than those provided by _BST.
484 * Note: since not all the laptops provide this method, errors are
485 * silently ignored.
486 */
487 rv = acpi_evaluate_integer(hotk->handle, "ASYM", NULL, &temp);
488 if (!ACPI_FAILURE(rv))
489 len += sprintf(page + len, "ASYM value : 0x%04x\n",
490 (uint) temp);
491 if (asus_info) {
492 snprintf(buf, 16, "%d", asus_info->length);
493 len += sprintf(page + len, "DSDT length : %s\n", buf);
494 snprintf(buf, 16, "%d", asus_info->checksum);
495 len += sprintf(page + len, "DSDT checksum : %s\n", buf);
496 snprintf(buf, 16, "%d", asus_info->revision);
497 len += sprintf(page + len, "DSDT revision : %s\n", buf);
498 snprintf(buf, 7, "%s", asus_info->oem_id);
499 len += sprintf(page + len, "OEM id : %s\n", buf);
500 snprintf(buf, 9, "%s", asus_info->oem_table_id);
501 len += sprintf(page + len, "OEM table id : %s\n", buf);
502 snprintf(buf, 16, "%x", asus_info->oem_revision);
503 len += sprintf(page + len, "OEM revision : 0x%s\n", buf);
504 snprintf(buf, 5, "%s", asus_info->asl_compiler_id);
505 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
506 snprintf(buf, 16, "%x", asus_info->asl_compiler_revision);
507 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf);
508 }
509
510 return len;
511}
512
513static int parse_arg(const char *buf, unsigned long count, int *val)
514{
515 if (!count)
516 return 0;
517 if (count > 31)
518 return -EINVAL;
519 if (sscanf(buf, "%i", val) != 1)
520 return -EINVAL;
521 return count;
522}
523
524static ssize_t store_status(const char *buf, size_t count,
525 acpi_handle handle, int mask)
526{
527 int rv, value;
528 int out = 0;
529
530 rv = parse_arg(buf, count, &value);
531 if (rv > 0)
532 out = value ? 1 : 0;
533
534 write_status(handle, out, mask);
535
536 return rv;
537}
538
539/*
540 * LEDD display
541 */
542static ssize_t show_ledd(struct device *dev,
543 struct device_attribute *attr, char *buf)
544{
545 return sprintf(buf, "0x%08x\n", hotk->ledd_status);
546}
547
548static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
549 const char *buf, size_t count)
550{
551 int rv, value;
552
553 rv = parse_arg(buf, count, &value);
554 if (rv > 0) {
555 if (write_acpi_int(ledd_set_handle, NULL, value, NULL))
556 printk(ASUS_WARNING "LED display write failed\n");
557 else
558 hotk->ledd_status = (u32) value;
559 }
560 return rv;
561}
562
563/*
564 * WLAN
565 */
566static ssize_t show_wlan(struct device *dev,
567 struct device_attribute *attr, char *buf)
568{
569 return sprintf(buf, "%d\n", read_status(WL_ON));
570}
571
572static ssize_t store_wlan(struct device *dev, struct device_attribute *attr,
573 const char *buf, size_t count)
574{
575 return store_status(buf, count, wl_switch_handle, WL_ON);
576}
577
578/*
579 * Bluetooth
580 */
581static ssize_t show_bluetooth(struct device *dev,
582 struct device_attribute *attr, char *buf)
583{
584 return sprintf(buf, "%d\n", read_status(BT_ON));
585}
586
587static ssize_t store_bluetooth(struct device *dev,
588 struct device_attribute *attr, const char *buf,
589 size_t count)
590{
591 return store_status(buf, count, bt_switch_handle, BT_ON);
592}
593
594/*
595 * Display
596 */
597static void set_display(int value)
598{
599 /* no sanity check needed for now */
600 if (write_acpi_int(display_set_handle, NULL, value, NULL))
601 printk(ASUS_WARNING "Error setting display\n");
602 return;
603}
604
605static int read_display(void)
606{
607 unsigned long long value = 0;
608 acpi_status rv = AE_OK;
609
610 /* In most of the case, we know how to set the display, but sometime
611 we can't read it */
612 if (display_get_handle) {
613 rv = acpi_evaluate_integer(display_get_handle, NULL,
614 NULL, &value);
615 if (ACPI_FAILURE(rv))
616 printk(ASUS_WARNING "Error reading display status\n");
617 }
618
619 value &= 0x0F; /* needed for some models, shouldn't hurt others */
620
621 return value;
622}
623
624/*
625 * Now, *this* one could be more user-friendly, but so far, no-one has
626 * complained. The significance of bits is the same as in store_disp()
627 */
628static ssize_t show_disp(struct device *dev,
629 struct device_attribute *attr, char *buf)
630{
631 return sprintf(buf, "%d\n", read_display());
632}
633
634/*
635 * Experimental support for display switching. As of now: 1 should activate
636 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
637 * Any combination (bitwise) of these will suffice. I never actually tested 4
638 * displays hooked up simultaneously, so be warned. See the acpi4asus README
639 * for more info.
640 */
641static ssize_t store_disp(struct device *dev, struct device_attribute *attr,
642 const char *buf, size_t count)
643{
644 int rv, value;
645
646 rv = parse_arg(buf, count, &value);
647 if (rv > 0)
648 set_display(value);
649 return rv;
650}
651
652/*
653 * Light Sens
654 */
655static void set_light_sens_switch(int value)
656{
657 if (write_acpi_int(ls_switch_handle, NULL, value, NULL))
658 printk(ASUS_WARNING "Error setting light sensor switch\n");
659 hotk->light_switch = value;
660}
661
662static ssize_t show_lssw(struct device *dev,
663 struct device_attribute *attr, char *buf)
664{
665 return sprintf(buf, "%d\n", hotk->light_switch);
666}
667
668static ssize_t store_lssw(struct device *dev, struct device_attribute *attr,
669 const char *buf, size_t count)
670{
671 int rv, value;
672
673 rv = parse_arg(buf, count, &value);
674 if (rv > 0)
675 set_light_sens_switch(value ? 1 : 0);
676
677 return rv;
678}
679
680static void set_light_sens_level(int value)
681{
682 if (write_acpi_int(ls_level_handle, NULL, value, NULL))
683 printk(ASUS_WARNING "Error setting light sensor level\n");
684 hotk->light_level = value;
685}
686
687static ssize_t show_lslvl(struct device *dev,
688 struct device_attribute *attr, char *buf)
689{
690 return sprintf(buf, "%d\n", hotk->light_level);
691}
692
693static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr,
694 const char *buf, size_t count)
695{
696 int rv, value;
697
698 rv = parse_arg(buf, count, &value);
699 if (rv > 0) {
700 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
701 /* 0 <= value <= 15 */
702 set_light_sens_level(value);
703 }
704
705 return rv;
706}
707
708/*
709 * GPS
710 */
711static ssize_t show_gps(struct device *dev,
712 struct device_attribute *attr, char *buf)
713{
714 return sprintf(buf, "%d\n", read_status(GPS_ON));
715}
716
717static ssize_t store_gps(struct device *dev, struct device_attribute *attr,
718 const char *buf, size_t count)
719{
720 return store_status(buf, count, NULL, GPS_ON);
721}
722
723static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
724{
725 /* TODO Find a better way to handle events count. */
726 if (!hotk)
727 return;
728
729 /*
730 * We need to tell the backlight device when the backlight power is
731 * switched
732 */
733 if (event == ATKD_LCD_ON) {
734 write_status(NULL, 1, LCD_ON);
735 lcd_blank(FB_BLANK_UNBLANK);
736 } else if (event == ATKD_LCD_OFF) {
737 write_status(NULL, 0, LCD_ON);
738 lcd_blank(FB_BLANK_POWERDOWN);
739 }
740
741 acpi_bus_generate_proc_event(hotk->device, event,
742 hotk->event_count[event % 128]++);
743
744 return;
745}
746
747#define ASUS_CREATE_DEVICE_ATTR(_name) \
748 struct device_attribute dev_attr_##_name = { \
749 .attr = { \
750 .name = __stringify(_name), \
751 .mode = 0 }, \
752 .show = NULL, \
753 .store = NULL, \
754 }
755
756#define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \
757 do { \
758 dev_attr_##_name.attr.mode = _mode; \
759 dev_attr_##_name.show = _show; \
760 dev_attr_##_name.store = _store; \
761 } while(0)
762
763static ASUS_CREATE_DEVICE_ATTR(infos);
764static ASUS_CREATE_DEVICE_ATTR(wlan);
765static ASUS_CREATE_DEVICE_ATTR(bluetooth);
766static ASUS_CREATE_DEVICE_ATTR(display);
767static ASUS_CREATE_DEVICE_ATTR(ledd);
768static ASUS_CREATE_DEVICE_ATTR(ls_switch);
769static ASUS_CREATE_DEVICE_ATTR(ls_level);
770static ASUS_CREATE_DEVICE_ATTR(gps);
771
772static struct attribute *asuspf_attributes[] = {
773 &dev_attr_infos.attr,
774 &dev_attr_wlan.attr,
775 &dev_attr_bluetooth.attr,
776 &dev_attr_display.attr,
777 &dev_attr_ledd.attr,
778 &dev_attr_ls_switch.attr,
779 &dev_attr_ls_level.attr,
780 &dev_attr_gps.attr,
781 NULL
782};
783
784static struct attribute_group asuspf_attribute_group = {
785 .attrs = asuspf_attributes
786};
787
788static struct platform_driver asuspf_driver = {
789 .driver = {
790 .name = ASUS_HOTK_FILE,
791 .owner = THIS_MODULE,
792 }
793};
794
795static struct platform_device *asuspf_device;
796
797static void asus_hotk_add_fs(void)
798{
799 ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL);
800
801 if (wl_switch_handle)
802 ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan);
803
804 if (bt_switch_handle)
805 ASUS_SET_DEVICE_ATTR(bluetooth, 0644,
806 show_bluetooth, store_bluetooth);
807
808 if (display_set_handle && display_get_handle)
809 ASUS_SET_DEVICE_ATTR(display, 0644, show_disp, store_disp);
810 else if (display_set_handle)
811 ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp);
812
813 if (ledd_set_handle)
814 ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd);
815
816 if (ls_switch_handle && ls_level_handle) {
817 ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl);
818 ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw);
819 }
820
821 if (gps_status_handle && gps_on_handle && gps_off_handle)
822 ASUS_SET_DEVICE_ATTR(gps, 0644, show_gps, store_gps);
823}
824
825static int asus_handle_init(char *name, acpi_handle * handle,
826 char **paths, int num_paths)
827{
828 int i;
829 acpi_status status;
830
831 for (i = 0; i < num_paths; i++) {
832 status = acpi_get_handle(NULL, paths[i], handle);
833 if (ACPI_SUCCESS(status))
834 return 0;
835 }
836
837 *handle = NULL;
838 return -ENODEV;
839}
840
841#define ASUS_HANDLE_INIT(object) \
842 asus_handle_init(#object, &object##_handle, object##_paths, \
843 ARRAY_SIZE(object##_paths))
844
845/*
846 * This function is used to initialize the hotk with right values. In this
847 * method, we can make all the detection we want, and modify the hotk struct
848 */
849static int asus_hotk_get_info(void)
850{
851 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
852 union acpi_object *model = NULL;
853 unsigned long long bsts_result, hwrs_result;
854 char *string = NULL;
855 acpi_status status;
856
857 /*
858 * Get DSDT headers early enough to allow for differentiating between
859 * models, but late enough to allow acpi_bus_register_driver() to fail
860 * before doing anything ACPI-specific. Should we encounter a machine,
861 * which needs special handling (i.e. its hotkey device has a different
862 * HID), this bit will be moved. A global variable asus_info contains
863 * the DSDT header.
864 */
865 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus_info);
866 if (ACPI_FAILURE(status))
867 printk(ASUS_WARNING "Couldn't get the DSDT table header\n");
868
869 /* We have to write 0 on init this far for all ASUS models */
870 if (write_acpi_int(hotk->handle, "INIT", 0, &buffer)) {
871 printk(ASUS_ERR "Hotkey initialization failed\n");
872 return -ENODEV;
873 }
874
875 /* This needs to be called for some laptops to init properly */
876 status =
877 acpi_evaluate_integer(hotk->handle, "BSTS", NULL, &bsts_result);
878 if (ACPI_FAILURE(status))
879 printk(ASUS_WARNING "Error calling BSTS\n");
880 else if (bsts_result)
881 printk(ASUS_NOTICE "BSTS called, 0x%02x returned\n",
882 (uint) bsts_result);
883
884 /* This too ... */
885 write_acpi_int(hotk->handle, "CWAP", wapf, NULL);
886
887 /*
888 * Try to match the object returned by INIT to the specific model.
889 * Handle every possible object (or the lack of thereof) the DSDT
890 * writers might throw at us. When in trouble, we pass NULL to
891 * asus_model_match() and try something completely different.
892 */
893 if (buffer.pointer) {
894 model = buffer.pointer;
895 switch (model->type) {
896 case ACPI_TYPE_STRING:
897 string = model->string.pointer;
898 break;
899 case ACPI_TYPE_BUFFER:
900 string = model->buffer.pointer;
901 break;
902 default:
903 string = "";
904 break;
905 }
906 }
907 hotk->name = kstrdup(string, GFP_KERNEL);
908 if (!hotk->name)
909 return -ENOMEM;
910
911 if (*string)
912 printk(ASUS_NOTICE " %s model detected\n", string);
913
914 ASUS_HANDLE_INIT(mled_set);
915 ASUS_HANDLE_INIT(tled_set);
916 ASUS_HANDLE_INIT(rled_set);
917 ASUS_HANDLE_INIT(pled_set);
918 ASUS_HANDLE_INIT(gled_set);
919
920 ASUS_HANDLE_INIT(ledd_set);
921
922 /*
923 * The HWRS method return informations about the hardware.
924 * 0x80 bit is for WLAN, 0x100 for Bluetooth.
925 * The significance of others is yet to be found.
926 * If we don't find the method, we assume the device are present.
927 */
928 status =
929 acpi_evaluate_integer(hotk->handle, "HRWS", NULL, &hwrs_result);
930 if (ACPI_FAILURE(status))
931 hwrs_result = WL_HWRS | BT_HWRS;
932
933 if (hwrs_result & WL_HWRS)
934 ASUS_HANDLE_INIT(wl_switch);
935 if (hwrs_result & BT_HWRS)
936 ASUS_HANDLE_INIT(bt_switch);
937
938 ASUS_HANDLE_INIT(wireless_status);
939
940 ASUS_HANDLE_INIT(brightness_set);
941 ASUS_HANDLE_INIT(brightness_get);
942
943 ASUS_HANDLE_INIT(lcd_switch);
944
945 ASUS_HANDLE_INIT(display_set);
946 ASUS_HANDLE_INIT(display_get);
947
948 /* There is a lot of models with "ALSL", but a few get
949 a real light sens, so we need to check it. */
950 if (!ASUS_HANDLE_INIT(ls_switch))
951 ASUS_HANDLE_INIT(ls_level);
952
953 ASUS_HANDLE_INIT(gps_on);
954 ASUS_HANDLE_INIT(gps_off);
955 ASUS_HANDLE_INIT(gps_status);
956
957 kfree(model);
958
959 return AE_OK;
960}
961
962static int asus_hotk_check(void)
963{
964 int result = 0;
965
966 result = acpi_bus_get_status(hotk->device);
967 if (result)
968 return result;
969
970 if (hotk->device->status.present) {
971 result = asus_hotk_get_info();
972 } else {
973 printk(ASUS_ERR "Hotkey device not present, aborting\n");
974 return -EINVAL;
975 }
976
977 return result;
978}
979
980static int asus_hotk_found;
981
982static int asus_hotk_add(struct acpi_device *device)
983{
984 acpi_status status = AE_OK;
985 int result;
986
987 if (!device)
988 return -EINVAL;
989
990 printk(ASUS_NOTICE "Asus Laptop Support version %s\n",
991 ASUS_LAPTOP_VERSION);
992
993 hotk = kzalloc(sizeof(struct asus_hotk), GFP_KERNEL);
994 if (!hotk)
995 return -ENOMEM;
996
997 hotk->handle = device->handle;
998 strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME);
999 strcpy(acpi_device_class(device), ASUS_HOTK_CLASS);
1000 device->driver_data = hotk;
1001 hotk->device = device;
1002
1003 result = asus_hotk_check();
1004 if (result)
1005 goto end;
1006
1007 asus_hotk_add_fs();
1008
1009 /*
1010 * We install the handler, it will receive the hotk in parameter, so, we
1011 * could add other data to the hotk struct
1012 */
1013 status = acpi_install_notify_handler(hotk->handle, ACPI_ALL_NOTIFY,
1014 asus_hotk_notify, hotk);
1015 if (ACPI_FAILURE(status))
1016 printk(ASUS_ERR "Error installing notify handler\n");
1017
1018 asus_hotk_found = 1;
1019
1020 /* WLED and BLED are on by default */
1021 write_status(bt_switch_handle, 1, BT_ON);
1022 write_status(wl_switch_handle, 1, WL_ON);
1023
1024 /* If the h/w switch is off, we need to check the real status */
1025 write_status(NULL, read_status(BT_ON), BT_ON);
1026 write_status(NULL, read_status(WL_ON), WL_ON);
1027
1028 /* LCD Backlight is on by default */
1029 write_status(NULL, 1, LCD_ON);
1030
1031 /* LED display is off by default */
1032 hotk->ledd_status = 0xFFF;
1033
1034 /* Set initial values of light sensor and level */
1035 hotk->light_switch = 1; /* Default to light sensor disabled */
1036 hotk->light_level = 0; /* level 5 for sensor sensitivity */
1037
1038 if (ls_switch_handle)
1039 set_light_sens_switch(hotk->light_switch);
1040
1041 if (ls_level_handle)
1042 set_light_sens_level(hotk->light_level);
1043
1044 /* GPS is on by default */
1045 write_status(NULL, 1, GPS_ON);
1046
1047 end:
1048 if (result) {
1049 kfree(hotk->name);
1050 kfree(hotk);
1051 }
1052
1053 return result;
1054}
1055
1056static int asus_hotk_remove(struct acpi_device *device, int type)
1057{
1058 acpi_status status = 0;
1059
1060 if (!device || !acpi_driver_data(device))
1061 return -EINVAL;
1062
1063 status = acpi_remove_notify_handler(hotk->handle, ACPI_ALL_NOTIFY,
1064 asus_hotk_notify);
1065 if (ACPI_FAILURE(status))
1066 printk(ASUS_ERR "Error removing notify handler\n");
1067
1068 kfree(hotk->name);
1069 kfree(hotk);
1070
1071 return 0;
1072}
1073
1074static void asus_backlight_exit(void)
1075{
1076 if (asus_backlight_device)
1077 backlight_device_unregister(asus_backlight_device);
1078}
1079
1080#define ASUS_LED_UNREGISTER(object) \
1081 if (object##_led.dev) \
1082 led_classdev_unregister(&object##_led)
1083
1084static void asus_led_exit(void)
1085{
1086 destroy_workqueue(led_workqueue);
1087 ASUS_LED_UNREGISTER(mled);
1088 ASUS_LED_UNREGISTER(tled);
1089 ASUS_LED_UNREGISTER(pled);
1090 ASUS_LED_UNREGISTER(rled);
1091 ASUS_LED_UNREGISTER(gled);
1092}
1093
1094static void __exit asus_laptop_exit(void)
1095{
1096 asus_backlight_exit();
1097 asus_led_exit();
1098
1099 acpi_bus_unregister_driver(&asus_hotk_driver);
1100 sysfs_remove_group(&asuspf_device->dev.kobj, &asuspf_attribute_group);
1101 platform_device_unregister(asuspf_device);
1102 platform_driver_unregister(&asuspf_driver);
1103}
1104
1105static int asus_backlight_init(struct device *dev)
1106{
1107 struct backlight_device *bd;
1108
1109 if (brightness_set_handle && lcd_switch_handle) {
1110 bd = backlight_device_register(ASUS_HOTK_FILE, dev,
1111 NULL, &asusbl_ops);
1112 if (IS_ERR(bd)) {
1113 printk(ASUS_ERR
1114 "Could not register asus backlight device\n");
1115 asus_backlight_device = NULL;
1116 return PTR_ERR(bd);
1117 }
1118
1119 asus_backlight_device = bd;
1120
1121 bd->props.max_brightness = 15;
1122 bd->props.brightness = read_brightness(NULL);
1123 bd->props.power = FB_BLANK_UNBLANK;
1124 backlight_update_status(bd);
1125 }
1126 return 0;
1127}
1128
1129static int asus_led_register(acpi_handle handle,
1130 struct led_classdev *ldev, struct device *dev)
1131{
1132 if (!handle)
1133 return 0;
1134
1135 return led_classdev_register(dev, ldev);
1136}
1137
1138#define ASUS_LED_REGISTER(object, device) \
1139 asus_led_register(object##_set_handle, &object##_led, device)
1140
1141static int asus_led_init(struct device *dev)
1142{
1143 int rv;
1144
1145 rv = ASUS_LED_REGISTER(mled, dev);
1146 if (rv)
1147 goto out;
1148
1149 rv = ASUS_LED_REGISTER(tled, dev);
1150 if (rv)
1151 goto out1;
1152
1153 rv = ASUS_LED_REGISTER(rled, dev);
1154 if (rv)
1155 goto out2;
1156
1157 rv = ASUS_LED_REGISTER(pled, dev);
1158 if (rv)
1159 goto out3;
1160
1161 rv = ASUS_LED_REGISTER(gled, dev);
1162 if (rv)
1163 goto out4;
1164
1165 led_workqueue = create_singlethread_workqueue("led_workqueue");
1166 if (!led_workqueue)
1167 goto out5;
1168
1169 return 0;
1170out5:
1171 rv = -ENOMEM;
1172 ASUS_LED_UNREGISTER(gled);
1173out4:
1174 ASUS_LED_UNREGISTER(pled);
1175out3:
1176 ASUS_LED_UNREGISTER(rled);
1177out2:
1178 ASUS_LED_UNREGISTER(tled);
1179out1:
1180 ASUS_LED_UNREGISTER(mled);
1181out:
1182 return rv;
1183}
1184
1185static int __init asus_laptop_init(void)
1186{
1187 struct device *dev;
1188 int result;
1189
1190 if (acpi_disabled)
1191 return -ENODEV;
1192
1193 result = acpi_bus_register_driver(&asus_hotk_driver);
1194 if (result < 0)
1195 return result;
1196
1197 /*
1198 * This is a bit of a kludge. We only want this module loaded
1199 * for ASUS systems, but there's currently no way to probe the
1200 * ACPI namespace for ASUS HIDs. So we just return failure if
1201 * we didn't find one, which will cause the module to be
1202 * unloaded.
1203 */
1204 if (!asus_hotk_found) {
1205 acpi_bus_unregister_driver(&asus_hotk_driver);
1206 return -ENODEV;
1207 }
1208
1209 dev = acpi_get_physical_device(hotk->device->handle);
1210
1211 if (!acpi_video_backlight_support()) {
1212 result = asus_backlight_init(dev);
1213 if (result)
1214 goto fail_backlight;
1215 } else
1216 printk(ASUS_INFO "Brightness ignored, must be controlled by "
1217 "ACPI video driver\n");
1218
1219 result = asus_led_init(dev);
1220 if (result)
1221 goto fail_led;
1222
1223 /* Register platform stuff */
1224 result = platform_driver_register(&asuspf_driver);
1225 if (result)
1226 goto fail_platform_driver;
1227
1228 asuspf_device = platform_device_alloc(ASUS_HOTK_FILE, -1);
1229 if (!asuspf_device) {
1230 result = -ENOMEM;
1231 goto fail_platform_device1;
1232 }
1233
1234 result = platform_device_add(asuspf_device);
1235 if (result)
1236 goto fail_platform_device2;
1237
1238 result = sysfs_create_group(&asuspf_device->dev.kobj,
1239 &asuspf_attribute_group);
1240 if (result)
1241 goto fail_sysfs;
1242
1243 return 0;
1244
1245 fail_sysfs:
1246 platform_device_del(asuspf_device);
1247
1248 fail_platform_device2:
1249 platform_device_put(asuspf_device);
1250
1251 fail_platform_device1:
1252 platform_driver_unregister(&asuspf_driver);
1253
1254 fail_platform_driver:
1255 asus_led_exit();
1256
1257 fail_led:
1258 asus_backlight_exit();
1259
1260 fail_backlight:
1261
1262 return result;
1263}
1264
1265module_init(asus_laptop_init);
1266module_exit(asus_laptop_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-25 00:30:55 -0500