blob: dcab778a91c5f3ba346b76217b2ae88fa14df96e [file] [log] [blame]
Corentin Chary85091b72007-01-26 14:04:30 +01001/*
2 * asus-laptop.c - Asus Laptop Support
3 *
4 *
5 * Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
6 * Copyright (C) 2006 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 *
34 */
35
36#include <linux/autoconf.h>
37#include <linux/kernel.h>
38#include <linux/module.h>
39#include <linux/init.h>
40#include <linux/types.h>
41#include <linux/err.h>
42#include <linux/proc_fs.h>
Corentin Chary6b7091e2007-01-26 14:04:45 +010043#include <linux/backlight.h>
44#include <linux/fb.h>
Corentin Charybe18cda2007-01-26 14:04:35 +010045#include <linux/leds.h>
Corentin Chary85091b72007-01-26 14:04:30 +010046#include <linux/platform_device.h>
47#include <acpi/acpi_drivers.h>
48#include <acpi/acpi_bus.h>
49#include <asm/uaccess.h>
50
51#define ASUS_LAPTOP_VERSION "0.40"
52
53#define ASUS_HOTK_NAME "Asus Laptop Support"
54#define ASUS_HOTK_CLASS "hotkey"
55#define ASUS_HOTK_DEVICE_NAME "Hotkey"
56#define ASUS_HOTK_HID "ATK0100"
57#define ASUS_HOTK_FILE "asus-laptop"
58#define ASUS_HOTK_PREFIX "\\_SB.ATKD."
59
Corentin Charybe18cda2007-01-26 14:04:35 +010060/*
Corentin Chary6b7091e2007-01-26 14:04:45 +010061 * Some events we use, same for all Asus
62 */
63#define ATKD_BR_UP 0x10
64#define ATKD_BR_DOWN 0x20
65#define ATKD_LCD_ON 0x33
66#define ATKD_LCD_OFF 0x34
67
68/*
Corentin Chary4564de12007-01-26 14:04:40 +010069 * Known bits returned by \_SB.ATKD.HWRS
Corentin Charybe18cda2007-01-26 14:04:35 +010070 */
Corentin Chary4564de12007-01-26 14:04:40 +010071#define WL_HWRS 0x80
72#define BT_HWRS 0x100
73
74/*
75 * Flags for hotk status
76 * WL_ON and BT_ON are also used for wireless_status()
77 */
78#define WL_ON 0x01 //internal Wifi
79#define BT_ON 0x02 //internal Bluetooth
Corentin Charybe18cda2007-01-26 14:04:35 +010080#define MLED_ON 0x04 //mail LED
81#define TLED_ON 0x08 //touchpad LED
Len Brown8def05f2007-01-30 01:46:43 -050082#define RLED_ON 0x10 //Record LED
83#define PLED_ON 0x20 //Phone LED
84#define LCD_ON 0x40 //LCD backlight
Corentin Charybe18cda2007-01-26 14:04:35 +010085
Corentin Chary85091b72007-01-26 14:04:30 +010086#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#define ASUS_HANDLE(object, paths...) \
98 static acpi_handle object##_handle = NULL; \
99 static char *object##_paths[] = { paths }
100
Corentin Charybe18cda2007-01-26 14:04:35 +0100101/* LED */
102ASUS_HANDLE(mled_set, ASUS_HOTK_PREFIX "MLED");
103ASUS_HANDLE(tled_set, ASUS_HOTK_PREFIX "TLED");
Len Brown8def05f2007-01-30 01:46:43 -0500104ASUS_HANDLE(rled_set, ASUS_HOTK_PREFIX "RLED"); /* W1JC */
105ASUS_HANDLE(pled_set, ASUS_HOTK_PREFIX "PLED"); /* A7J */
Corentin Charybe18cda2007-01-26 14:04:35 +0100106
Corentin Chary722ad972007-01-26 14:04:55 +0100107/* LEDD */
108ASUS_HANDLE(ledd_set, ASUS_HOTK_PREFIX "SLCM");
109
Corentin Chary4564de12007-01-26 14:04:40 +0100110/* Bluetooth and WLAN
111 * WLED and BLED are not handled like other XLED, because in some dsdt
112 * they also control the WLAN/Bluetooth device.
113 */
114ASUS_HANDLE(wl_switch, ASUS_HOTK_PREFIX "WLED");
115ASUS_HANDLE(bt_switch, ASUS_HOTK_PREFIX "BLED");
Len Brown8def05f2007-01-30 01:46:43 -0500116ASUS_HANDLE(wireless_status, ASUS_HOTK_PREFIX "RSTS"); /* All new models */
Corentin Chary4564de12007-01-26 14:04:40 +0100117
Corentin Chary6b7091e2007-01-26 14:04:45 +0100118/* Brightness */
119ASUS_HANDLE(brightness_set, ASUS_HOTK_PREFIX "SPLV");
120ASUS_HANDLE(brightness_get, ASUS_HOTK_PREFIX "GPLV");
121
122/* Backlight */
Len Brown8def05f2007-01-30 01:46:43 -0500123ASUS_HANDLE(lcd_switch, "\\_SB.PCI0.SBRG.EC0._Q10", /* All new models */
124 "\\_SB.PCI0.ISA.EC0._Q10", /* A1x */
125 "\\_SB.PCI0.PX40.ECD0._Q10", /* L3C */
126 "\\_SB.PCI0.PX40.EC0.Q10", /* M1A */
127 "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */
128 "\\_SB.PCI0.PX40.Q10", /* S1x */
129 "\\Q10"); /* A2x, L2D, L3D, M2E */
Corentin Chary6b7091e2007-01-26 14:04:45 +0100130
Corentin Chary78127b42007-01-26 14:04:49 +0100131/* Display */
132ASUS_HANDLE(display_set, ASUS_HOTK_PREFIX "SDSP");
Len Brown8def05f2007-01-30 01:46:43 -0500133ASUS_HANDLE(display_get, "\\_SB.PCI0.P0P1.VGA.GETD", /* A6B, A6K A6R A7D F3JM L4R M6R A3G
134 M6A M6V VX-1 V6J V6V W3Z */
135 "\\_SB.PCI0.P0P2.VGA.GETD", /* A3E A4K, A4D A4L A6J A7J A8J Z71V M9V
Corentin Chary78127b42007-01-26 14:04:49 +0100136 S5A M5A z33A W1Jc W2V */
Len Brown8def05f2007-01-30 01:46:43 -0500137 "\\_SB.PCI0.P0P3.VGA.GETD", /* A6V A6Q */
138 "\\_SB.PCI0.P0PA.VGA.GETD", /* A6T, A6M */
139 "\\_SB.PCI0.PCI1.VGAC.NMAP", /* L3C */
140 "\\_SB.PCI0.VGA.GETD", /* Z96F */
141 "\\ACTD", /* A2D */
142 "\\ADVG", /* A4G Z71A W1N W5A W5F M2N M3N M5N M6N S1N S5N */
143 "\\DNXT", /* P30 */
144 "\\INFB", /* A2H D1 L2D L3D L3H L2E L5D L5C M1A M2E L4L W3V */
145 "\\SSTE"); /* A3F A6F A3N A3L M6N W3N W6A */
Corentin Chary78127b42007-01-26 14:04:49 +0100146
Len Brown8def05f2007-01-30 01:46:43 -0500147ASUS_HANDLE(ls_switch, ASUS_HOTK_PREFIX "ALSC"); /* Z71A Z71V */
148ASUS_HANDLE(ls_level, ASUS_HOTK_PREFIX "ALSL"); /* Z71A Z71V */
Corentin Chary8b857352007-01-26 14:04:58 +0100149
Corentin Chary85091b72007-01-26 14:04:30 +0100150/*
151 * This is the main structure, we can use it to store anything interesting
152 * about the hotk device
153 */
154struct asus_hotk {
Len Brown8def05f2007-01-30 01:46:43 -0500155 char *name; //laptop name
Corentin Chary85091b72007-01-26 14:04:30 +0100156 struct acpi_device *device; //the device we are in
157 acpi_handle handle; //the handle of the hotk device
158 char status; //status of the hotk, for LEDs, ...
Corentin Chary722ad972007-01-26 14:04:55 +0100159 u32 ledd_status; //status of the LED display
Len Brown8def05f2007-01-30 01:46:43 -0500160 u8 light_level; //light sensor level
161 u8 light_switch; //light sensor switch value
Corentin Chary85091b72007-01-26 14:04:30 +0100162 u16 event_count[128]; //count for each event TODO make this better
163};
164
165/*
166 * This header is made available to allow proper configuration given model,
167 * revision number , ... this info cannot go in struct asus_hotk because it is
168 * available before the hotk
169 */
170static struct acpi_table_header *asus_info;
171
172/* The actual device the driver binds to */
173static struct asus_hotk *hotk;
174
175/*
176 * The hotkey driver declaration
177 */
178static int asus_hotk_add(struct acpi_device *device);
179static int asus_hotk_remove(struct acpi_device *device, int type);
180static struct acpi_driver asus_hotk_driver = {
181 .name = ASUS_HOTK_NAME,
182 .class = ASUS_HOTK_CLASS,
183 .ids = ASUS_HOTK_HID,
184 .ops = {
185 .add = asus_hotk_add,
186 .remove = asus_hotk_remove,
187 },
188};
189
Corentin Chary6b7091e2007-01-26 14:04:45 +0100190/* The backlight device /sys/class/backlight */
191static struct backlight_device *asus_backlight_device;
192
193/*
194 * The backlight class declaration
195 */
196static int read_brightness(struct backlight_device *bd);
197static int update_bl_status(struct backlight_device *bd);
Richard Purdie599a52d2007-02-10 23:07:48 +0000198static struct backlight_ops asusbl_ops = {
Len Brown8def05f2007-01-30 01:46:43 -0500199 .get_brightness = read_brightness,
200 .update_status = update_bl_status,
Corentin Chary6b7091e2007-01-26 14:04:45 +0100201};
202
Corentin Charybe18cda2007-01-26 14:04:35 +0100203/* These functions actually update the LED's, and are called from a
204 * workqueue. By doing this as separate work rather than when the LED
205 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
206 * potentially bad time, such as a timer interrupt. */
207static struct workqueue_struct *led_workqueue;
208
209#define ASUS_LED(object, ledname) \
210 static void object##_led_set(struct led_classdev *led_cdev, \
211 enum led_brightness value); \
212 static void object##_led_update(struct work_struct *ignored); \
213 static int object##_led_wk; \
Adrian Bunkf110ef52007-02-20 01:07:25 +0100214 static DECLARE_WORK(object##_led_work, object##_led_update); \
Corentin Charybe18cda2007-01-26 14:04:35 +0100215 static struct led_classdev object##_led = { \
216 .name = "asus:" ledname, \
217 .brightness_set = object##_led_set, \
218 }
219
220ASUS_LED(mled, "mail");
221ASUS_LED(tled, "touchpad");
222ASUS_LED(rled, "record");
223ASUS_LED(pled, "phone");
224
Corentin Chary85091b72007-01-26 14:04:30 +0100225/*
226 * This function evaluates an ACPI method, given an int as parameter, the
227 * method is searched within the scope of the handle, can be NULL. The output
228 * of the method is written is output, which can also be NULL
229 *
230 * returns 1 if write is successful, 0 else.
231 */
232static int write_acpi_int(acpi_handle handle, const char *method, int val,
233 struct acpi_buffer *output)
234{
235 struct acpi_object_list params; //list of input parameters (an int here)
236 union acpi_object in_obj; //the only param we use
237 acpi_status status;
238
239 params.count = 1;
240 params.pointer = &in_obj;
241 in_obj.type = ACPI_TYPE_INTEGER;
242 in_obj.integer.value = val;
243
244 status = acpi_evaluate_object(handle, (char *)method, &params, output);
245 return (status == AE_OK);
246}
247
Len Brown8def05f2007-01-30 01:46:43 -0500248static int read_wireless_status(int mask)
249{
Corentin Chary9a816852007-03-11 10:25:38 +0100250 ulong status;
251 acpi_status rv = AE_OK;
Corentin Chary4564de12007-01-26 14:04:40 +0100252
253 if (!wireless_status_handle)
254 return (hotk->status & mask) ? 1 : 0;
255
Corentin Chary9a816852007-03-11 10:25:38 +0100256 rv = acpi_evaluate_integer(wireless_status_handle, NULL, NULL, &status);
257 if (ACPI_FAILURE(rv))
Corentin Chary4564de12007-01-26 14:04:40 +0100258 printk(ASUS_WARNING "Error reading Wireless status\n");
Corentin Chary9a816852007-03-11 10:25:38 +0100259 else
260 return (status & mask) ? 1 : 0;
Corentin Chary4564de12007-01-26 14:04:40 +0100261
262 return (hotk->status & mask) ? 1 : 0;
263}
264
Corentin Charybe18cda2007-01-26 14:04:35 +0100265/* Generic LED functions */
266static int read_status(int mask)
267{
Corentin Chary4564de12007-01-26 14:04:40 +0100268 /* There is a special method for both wireless devices */
269 if (mask == BT_ON || mask == WL_ON)
270 return read_wireless_status(mask);
271
Corentin Charybe18cda2007-01-26 14:04:35 +0100272 return (hotk->status & mask) ? 1 : 0;
273}
274
Len Brown8def05f2007-01-30 01:46:43 -0500275static void write_status(acpi_handle handle, int out, int mask, int invert)
Corentin Charybe18cda2007-01-26 14:04:35 +0100276{
277 hotk->status = (out) ? (hotk->status | mask) : (hotk->status & ~mask);
278
279 if (invert) /* invert target value */
280 out = !out & 0x1;
281
282 if (handle && !write_acpi_int(handle, NULL, out, NULL))
283 printk(ASUS_WARNING " write failed\n");
284}
285
286/* /sys/class/led handlers */
287#define ASUS_LED_HANDLER(object, mask, invert) \
288 static void object##_led_set(struct led_classdev *led_cdev, \
289 enum led_brightness value) \
290 { \
291 object##_led_wk = value; \
292 queue_work(led_workqueue, &object##_led_work); \
293 } \
294 static void object##_led_update(struct work_struct *ignored) \
295 { \
296 int value = object##_led_wk; \
297 write_status(object##_set_handle, value, (mask), (invert)); \
298 }
299
300ASUS_LED_HANDLER(mled, MLED_ON, 1);
301ASUS_LED_HANDLER(pled, PLED_ON, 0);
302ASUS_LED_HANDLER(rled, RLED_ON, 0);
303ASUS_LED_HANDLER(tled, TLED_ON, 0);
304
Corentin Chary6b7091e2007-01-26 14:04:45 +0100305static int get_lcd_state(void)
306{
307 return read_status(LCD_ON);
308}
309
310static int set_lcd_state(int value)
311{
312 int lcd = 0;
313 acpi_status status = 0;
314
315 lcd = value ? 1 : 0;
316
317 if (lcd == get_lcd_state())
318 return 0;
319
Len Brown8def05f2007-01-30 01:46:43 -0500320 if (lcd_switch_handle) {
Corentin Chary6b7091e2007-01-26 14:04:45 +0100321 status = acpi_evaluate_object(lcd_switch_handle,
322 NULL, NULL, NULL);
323
324 if (ACPI_FAILURE(status))
325 printk(ASUS_WARNING "Error switching LCD\n");
326 }
327
328 write_status(NULL, lcd, LCD_ON, 0);
329 return 0;
330}
331
332static void lcd_blank(int blank)
333{
334 struct backlight_device *bd = asus_backlight_device;
335
Len Brown8def05f2007-01-30 01:46:43 -0500336 if (bd) {
Richard Purdie599a52d2007-02-10 23:07:48 +0000337 bd->props.power = blank;
Richard Purdie28ee0862007-02-08 22:25:09 +0000338 backlight_update_status(bd);
Corentin Chary6b7091e2007-01-26 14:04:45 +0100339 }
340}
341
342static int read_brightness(struct backlight_device *bd)
343{
Corentin Chary9a816852007-03-11 10:25:38 +0100344 ulong value;
345 acpi_status rv = AE_OK;
Corentin Chary6b7091e2007-01-26 14:04:45 +0100346
Corentin Chary9a816852007-03-11 10:25:38 +0100347 rv = acpi_evaluate_integer(brightness_get_handle, NULL, NULL, &value);
348 if (ACPI_FAILURE(rv))
Corentin Chary6b7091e2007-01-26 14:04:45 +0100349 printk(ASUS_WARNING "Error reading brightness\n");
350
351 return value;
352}
353
354static int set_brightness(struct backlight_device *bd, int value)
355{
356 int ret = 0;
357
358 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
359 /* 0 <= value <= 15 */
360
361 if (!write_acpi_int(brightness_set_handle, NULL, value, NULL)) {
362 printk(ASUS_WARNING "Error changing brightness\n");
363 ret = -EIO;
364 }
365
366 return ret;
367}
368
369static int update_bl_status(struct backlight_device *bd)
370{
371 int rv;
Richard Purdie599a52d2007-02-10 23:07:48 +0000372 int value = bd->props.brightness;
Corentin Chary6b7091e2007-01-26 14:04:45 +0100373
374 rv = set_brightness(bd, value);
Len Brown8def05f2007-01-30 01:46:43 -0500375 if (rv)
Corentin Chary6b7091e2007-01-26 14:04:45 +0100376 return rv;
377
Richard Purdie599a52d2007-02-10 23:07:48 +0000378 value = (bd->props.power == FB_BLANK_UNBLANK) ? 1 : 0;
Corentin Chary6b7091e2007-01-26 14:04:45 +0100379 return set_lcd_state(value);
380}
381
Corentin Chary85091b72007-01-26 14:04:30 +0100382/*
383 * Platform device handlers
384 */
385
386/*
387 * We write our info in page, we begin at offset off and cannot write more
388 * than count bytes. We set eof to 1 if we handle those 2 values. We return the
389 * number of bytes written in page
390 */
391static ssize_t show_infos(struct device *dev,
Len Brown8def05f2007-01-30 01:46:43 -0500392 struct device_attribute *attr, char *page)
Corentin Chary85091b72007-01-26 14:04:30 +0100393{
394 int len = 0;
Corentin Chary9a816852007-03-11 10:25:38 +0100395 ulong temp;
Corentin Chary85091b72007-01-26 14:04:30 +0100396 char buf[16]; //enough for all info
Corentin Chary9a816852007-03-11 10:25:38 +0100397 acpi_status rv = AE_OK;
398
Corentin Chary85091b72007-01-26 14:04:30 +0100399 /*
400 * We use the easy way, we don't care of off and count, so we don't set eof
401 * to 1
402 */
403
404 len += sprintf(page, ASUS_HOTK_NAME " " ASUS_LAPTOP_VERSION "\n");
405 len += sprintf(page + len, "Model reference : %s\n", hotk->name);
406 /*
407 * The SFUN method probably allows the original driver to get the list
408 * of features supported by a given model. For now, 0x0100 or 0x0800
409 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
410 * The significance of others is yet to be found.
411 */
Corentin Chary9a816852007-03-11 10:25:38 +0100412 rv = acpi_evaluate_integer(hotk->handle, "SFUN", NULL, &temp);
413 if (!ACPI_FAILURE(rv))
414 len += sprintf(page + len, "SFUN value : 0x%04x\n",
415 (uint) temp);
Corentin Chary85091b72007-01-26 14:04:30 +0100416 /*
417 * Another value for userspace: the ASYM method returns 0x02 for
418 * battery low and 0x04 for battery critical, its readings tend to be
419 * more accurate than those provided by _BST.
420 * Note: since not all the laptops provide this method, errors are
421 * silently ignored.
422 */
Corentin Chary9a816852007-03-11 10:25:38 +0100423 rv = acpi_evaluate_integer(hotk->handle, "ASYM", NULL, &temp);
424 if (!ACPI_FAILURE(rv))
425 len += sprintf(page + len, "ASYM value : 0x%04x\n",
426 (uint) temp);
Corentin Chary85091b72007-01-26 14:04:30 +0100427 if (asus_info) {
428 snprintf(buf, 16, "%d", asus_info->length);
429 len += sprintf(page + len, "DSDT length : %s\n", buf);
430 snprintf(buf, 16, "%d", asus_info->checksum);
431 len += sprintf(page + len, "DSDT checksum : %s\n", buf);
432 snprintf(buf, 16, "%d", asus_info->revision);
433 len += sprintf(page + len, "DSDT revision : %s\n", buf);
434 snprintf(buf, 7, "%s", asus_info->oem_id);
435 len += sprintf(page + len, "OEM id : %s\n", buf);
436 snprintf(buf, 9, "%s", asus_info->oem_table_id);
437 len += sprintf(page + len, "OEM table id : %s\n", buf);
438 snprintf(buf, 16, "%x", asus_info->oem_revision);
439 len += sprintf(page + len, "OEM revision : 0x%s\n", buf);
440 snprintf(buf, 5, "%s", asus_info->asl_compiler_id);
441 len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
442 snprintf(buf, 16, "%x", asus_info->asl_compiler_revision);
443 len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf);
444 }
445
446 return len;
447}
448
449static int parse_arg(const char *buf, unsigned long count, int *val)
450{
451 if (!count)
452 return 0;
453 if (count > 31)
454 return -EINVAL;
455 if (sscanf(buf, "%i", val) != 1)
456 return -EINVAL;
457 return count;
458}
459
Corentin Chary4564de12007-01-26 14:04:40 +0100460static ssize_t store_status(const char *buf, size_t count,
461 acpi_handle handle, int mask, int invert)
462{
463 int rv, value;
464 int out = 0;
465
466 rv = parse_arg(buf, count, &value);
467 if (rv > 0)
468 out = value ? 1 : 0;
469
470 write_status(handle, out, mask, invert);
471
472 return rv;
473}
474
475/*
Corentin Chary722ad972007-01-26 14:04:55 +0100476 * LEDD display
477 */
478static ssize_t show_ledd(struct device *dev,
479 struct device_attribute *attr, char *buf)
480{
481 return sprintf(buf, "0x%08x\n", hotk->ledd_status);
482}
483
484static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
485 const char *buf, size_t count)
486{
487 int rv, value;
488
489 rv = parse_arg(buf, count, &value);
490 if (rv > 0) {
491 if (!write_acpi_int(ledd_set_handle, NULL, value, NULL))
492 printk(ASUS_WARNING "LED display write failed\n");
493 else
494 hotk->ledd_status = (u32) value;
495 }
496 return rv;
497}
498
499/*
Corentin Chary4564de12007-01-26 14:04:40 +0100500 * WLAN
501 */
502static ssize_t show_wlan(struct device *dev,
503 struct device_attribute *attr, char *buf)
504{
505 return sprintf(buf, "%d\n", read_status(WL_ON));
506}
507
508static ssize_t store_wlan(struct device *dev, struct device_attribute *attr,
509 const char *buf, size_t count)
510{
511 return store_status(buf, count, wl_switch_handle, WL_ON, 0);
512}
513
514/*
515 * Bluetooth
516 */
517static ssize_t show_bluetooth(struct device *dev,
518 struct device_attribute *attr, char *buf)
519{
520 return sprintf(buf, "%d\n", read_status(BT_ON));
521}
522
Len Brown8def05f2007-01-30 01:46:43 -0500523static ssize_t store_bluetooth(struct device *dev,
524 struct device_attribute *attr, const char *buf,
525 size_t count)
Corentin Chary4564de12007-01-26 14:04:40 +0100526{
527 return store_status(buf, count, bt_switch_handle, BT_ON, 0);
528}
529
Corentin Chary78127b42007-01-26 14:04:49 +0100530/*
531 * Display
532 */
533static void set_display(int value)
534{
535 /* no sanity check needed for now */
536 if (!write_acpi_int(display_set_handle, NULL, value, NULL))
537 printk(ASUS_WARNING "Error setting display\n");
538 return;
539}
540
541static int read_display(void)
542{
Corentin Chary9a816852007-03-11 10:25:38 +0100543 ulong value = 0;
544 acpi_status rv = AE_OK;
Corentin Chary78127b42007-01-26 14:04:49 +0100545
546 /* In most of the case, we know how to set the display, but sometime
547 we can't read it */
Len Brown8def05f2007-01-30 01:46:43 -0500548 if (display_get_handle) {
Corentin Chary9a816852007-03-11 10:25:38 +0100549 rv = acpi_evaluate_integer(display_get_handle, NULL,
550 NULL, &value);
551 if (ACPI_FAILURE(rv))
Corentin Chary78127b42007-01-26 14:04:49 +0100552 printk(ASUS_WARNING "Error reading display status\n");
553 }
554
555 value &= 0x0F; /* needed for some models, shouldn't hurt others */
556
557 return value;
558}
Len Brown8def05f2007-01-30 01:46:43 -0500559
Corentin Chary78127b42007-01-26 14:04:49 +0100560/*
561 * Now, *this* one could be more user-friendly, but so far, no-one has
562 * complained. The significance of bits is the same as in store_disp()
563 */
564static ssize_t show_disp(struct device *dev,
565 struct device_attribute *attr, char *buf)
566{
567 return sprintf(buf, "%d\n", read_display());
568}
569
570/*
571 * Experimental support for display switching. As of now: 1 should activate
572 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
573 * Any combination (bitwise) of these will suffice. I never actually tested 4
574 * displays hooked up simultaneously, so be warned. See the acpi4asus README
575 * for more info.
576 */
577static ssize_t store_disp(struct device *dev, struct device_attribute *attr,
578 const char *buf, size_t count)
579{
580 int rv, value;
581
582 rv = parse_arg(buf, count, &value);
583 if (rv > 0)
584 set_display(value);
585 return rv;
586}
587
Corentin Chary8b857352007-01-26 14:04:58 +0100588/*
589 * Light Sens
590 */
591static void set_light_sens_switch(int value)
592{
593 if (!write_acpi_int(ls_switch_handle, NULL, value, NULL))
594 printk(ASUS_WARNING "Error setting light sensor switch\n");
595 hotk->light_switch = value;
596}
597
598static ssize_t show_lssw(struct device *dev,
599 struct device_attribute *attr, char *buf)
600{
601 return sprintf(buf, "%d\n", hotk->light_switch);
602}
603
604static ssize_t store_lssw(struct device *dev, struct device_attribute *attr,
605 const char *buf, size_t count)
606{
607 int rv, value;
608
609 rv = parse_arg(buf, count, &value);
610 if (rv > 0)
611 set_light_sens_switch(value ? 1 : 0);
612
613 return rv;
614}
615
616static void set_light_sens_level(int value)
617{
618 if (!write_acpi_int(ls_level_handle, NULL, value, NULL))
619 printk(ASUS_WARNING "Error setting light sensor level\n");
620 hotk->light_level = value;
621}
622
623static ssize_t show_lslvl(struct device *dev,
624 struct device_attribute *attr, char *buf)
625{
626 return sprintf(buf, "%d\n", hotk->light_level);
627}
628
629static ssize_t store_lslvl(struct device *dev, struct device_attribute *attr,
630 const char *buf, size_t count)
631{
632 int rv, value;
633
634 rv = parse_arg(buf, count, &value);
635 if (rv > 0) {
636 value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
637 /* 0 <= value <= 15 */
638 set_light_sens_level(value);
639 }
640
641 return rv;
642}
643
Corentin Chary85091b72007-01-26 14:04:30 +0100644static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
645{
646 /* TODO Find a better way to handle events count. */
647 if (!hotk)
648 return;
649
Corentin Chary6b7091e2007-01-26 14:04:45 +0100650 /*
651 * We need to tell the backlight device when the backlight power is
652 * switched
653 */
654 if (event == ATKD_LCD_ON) {
655 write_status(NULL, 1, LCD_ON, 0);
656 lcd_blank(FB_BLANK_UNBLANK);
Len Brown8def05f2007-01-30 01:46:43 -0500657 } else if (event == ATKD_LCD_OFF) {
Corentin Chary6b7091e2007-01-26 14:04:45 +0100658 write_status(NULL, 0, LCD_ON, 0);
659 lcd_blank(FB_BLANK_POWERDOWN);
660 }
661
Corentin Chary85091b72007-01-26 14:04:30 +0100662 acpi_bus_generate_event(hotk->device, event,
663 hotk->event_count[event % 128]++);
664
665 return;
666}
667
668#define ASUS_CREATE_DEVICE_ATTR(_name) \
669 struct device_attribute dev_attr_##_name = { \
670 .attr = { \
671 .name = __stringify(_name), \
672 .mode = 0, \
673 .owner = THIS_MODULE }, \
674 .show = NULL, \
675 .store = NULL, \
676 }
677
678#define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \
679 do { \
680 dev_attr_##_name.attr.mode = _mode; \
681 dev_attr_##_name.show = _show; \
682 dev_attr_##_name.store = _store; \
683 } while(0)
684
685static ASUS_CREATE_DEVICE_ATTR(infos);
Corentin Chary4564de12007-01-26 14:04:40 +0100686static ASUS_CREATE_DEVICE_ATTR(wlan);
687static ASUS_CREATE_DEVICE_ATTR(bluetooth);
Corentin Chary78127b42007-01-26 14:04:49 +0100688static ASUS_CREATE_DEVICE_ATTR(display);
Corentin Chary722ad972007-01-26 14:04:55 +0100689static ASUS_CREATE_DEVICE_ATTR(ledd);
Corentin Chary8b857352007-01-26 14:04:58 +0100690static ASUS_CREATE_DEVICE_ATTR(ls_switch);
691static ASUS_CREATE_DEVICE_ATTR(ls_level);
Corentin Chary85091b72007-01-26 14:04:30 +0100692
693static struct attribute *asuspf_attributes[] = {
Len Brown8def05f2007-01-30 01:46:43 -0500694 &dev_attr_infos.attr,
695 &dev_attr_wlan.attr,
696 &dev_attr_bluetooth.attr,
697 &dev_attr_display.attr,
698 &dev_attr_ledd.attr,
699 &dev_attr_ls_switch.attr,
700 &dev_attr_ls_level.attr,
701 NULL
Corentin Chary85091b72007-01-26 14:04:30 +0100702};
703
704static struct attribute_group asuspf_attribute_group = {
Len Brown8def05f2007-01-30 01:46:43 -0500705 .attrs = asuspf_attributes
Corentin Chary85091b72007-01-26 14:04:30 +0100706};
707
708static struct platform_driver asuspf_driver = {
Len Brown8def05f2007-01-30 01:46:43 -0500709 .driver = {
710 .name = ASUS_HOTK_FILE,
711 .owner = THIS_MODULE,
712 }
Corentin Chary85091b72007-01-26 14:04:30 +0100713};
714
715static struct platform_device *asuspf_device;
716
Corentin Chary85091b72007-01-26 14:04:30 +0100717static void asus_hotk_add_fs(void)
718{
719 ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL);
Corentin Chary4564de12007-01-26 14:04:40 +0100720
721 if (wl_switch_handle)
722 ASUS_SET_DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan);
723
724 if (bt_switch_handle)
725 ASUS_SET_DEVICE_ATTR(bluetooth, 0644,
726 show_bluetooth, store_bluetooth);
Corentin Chary78127b42007-01-26 14:04:49 +0100727
728 if (display_set_handle && display_get_handle)
729 ASUS_SET_DEVICE_ATTR(display, 0644, show_disp, store_disp);
Len Brown8def05f2007-01-30 01:46:43 -0500730 else if (display_set_handle)
Corentin Chary78127b42007-01-26 14:04:49 +0100731 ASUS_SET_DEVICE_ATTR(display, 0200, NULL, store_disp);
732
Corentin Chary722ad972007-01-26 14:04:55 +0100733 if (ledd_set_handle)
734 ASUS_SET_DEVICE_ATTR(ledd, 0644, show_ledd, store_ledd);
735
Corentin Chary8b857352007-01-26 14:04:58 +0100736 if (ls_switch_handle && ls_level_handle) {
737 ASUS_SET_DEVICE_ATTR(ls_level, 0644, show_lslvl, store_lslvl);
738 ASUS_SET_DEVICE_ATTR(ls_switch, 0644, show_lssw, store_lssw);
739 }
Corentin Chary85091b72007-01-26 14:04:30 +0100740}
741
Len Brown8def05f2007-01-30 01:46:43 -0500742static int asus_handle_init(char *name, acpi_handle * handle,
Corentin Chary85091b72007-01-26 14:04:30 +0100743 char **paths, int num_paths)
744{
745 int i;
746 acpi_status status;
747
748 for (i = 0; i < num_paths; i++) {
749 status = acpi_get_handle(NULL, paths[i], handle);
750 if (ACPI_SUCCESS(status))
751 return 0;
752 }
753
754 *handle = NULL;
755 return -ENODEV;
756}
757
758#define ASUS_HANDLE_INIT(object) \
759 asus_handle_init(#object, &object##_handle, object##_paths, \
760 ARRAY_SIZE(object##_paths))
761
Corentin Chary85091b72007-01-26 14:04:30 +0100762/*
763 * This function is used to initialize the hotk with right values. In this
764 * method, we can make all the detection we want, and modify the hotk struct
765 */
766static int asus_hotk_get_info(void)
767{
768 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
Corentin Chary85091b72007-01-26 14:04:30 +0100769 union acpi_object *model = NULL;
Corentin Chary9a816852007-03-11 10:25:38 +0100770 ulong bsts_result, hwrs_result;
Corentin Chary85091b72007-01-26 14:04:30 +0100771 char *string = NULL;
772 acpi_status status;
773
774 /*
775 * Get DSDT headers early enough to allow for differentiating between
776 * models, but late enough to allow acpi_bus_register_driver() to fail
777 * before doing anything ACPI-specific. Should we encounter a machine,
778 * which needs special handling (i.e. its hotkey device has a different
779 * HID), this bit will be moved. A global variable asus_info contains
780 * the DSDT header.
781 */
Len Brown894d79b2007-02-03 02:13:53 -0500782 status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus_info);
Corentin Chary85091b72007-01-26 14:04:30 +0100783 if (ACPI_FAILURE(status))
784 printk(ASUS_WARNING "Couldn't get the DSDT table header\n");
Corentin Chary85091b72007-01-26 14:04:30 +0100785
786 /* We have to write 0 on init this far for all ASUS models */
787 if (!write_acpi_int(hotk->handle, "INIT", 0, &buffer)) {
788 printk(ASUS_ERR "Hotkey initialization failed\n");
789 return -ENODEV;
790 }
791
792 /* This needs to be called for some laptops to init properly */
Corentin Chary9a816852007-03-11 10:25:38 +0100793 status =
794 acpi_evaluate_integer(hotk->handle, "BSTS", NULL, &bsts_result);
795 if (ACPI_FAILURE(status))
Corentin Chary85091b72007-01-26 14:04:30 +0100796 printk(ASUS_WARNING "Error calling BSTS\n");
797 else if (bsts_result)
798 printk(ASUS_NOTICE "BSTS called, 0x%02x returned\n",
Corentin Chary9a816852007-03-11 10:25:38 +0100799 (uint) bsts_result);
Corentin Chary85091b72007-01-26 14:04:30 +0100800
801 /*
802 * Try to match the object returned by INIT to the specific model.
803 * Handle every possible object (or the lack of thereof) the DSDT
804 * writers might throw at us. When in trouble, we pass NULL to
805 * asus_model_match() and try something completely different.
806 */
807 if (buffer.pointer) {
808 model = buffer.pointer;
809 switch (model->type) {
810 case ACPI_TYPE_STRING:
811 string = model->string.pointer;
812 break;
813 case ACPI_TYPE_BUFFER:
814 string = model->buffer.pointer;
815 break;
816 default:
817 string = "";
818 break;
819 }
820 }
821 hotk->name = kstrdup(string, GFP_KERNEL);
822 if (!hotk->name)
823 return -ENOMEM;
824
Len Brown8def05f2007-01-30 01:46:43 -0500825 if (*string)
Corentin Chary85091b72007-01-26 14:04:30 +0100826 printk(ASUS_NOTICE " %s model detected\n", string);
827
Corentin Charybe18cda2007-01-26 14:04:35 +0100828 ASUS_HANDLE_INIT(mled_set);
829 ASUS_HANDLE_INIT(tled_set);
830 ASUS_HANDLE_INIT(rled_set);
831 ASUS_HANDLE_INIT(pled_set);
832
Corentin Chary722ad972007-01-26 14:04:55 +0100833 ASUS_HANDLE_INIT(ledd_set);
834
Corentin Chary4564de12007-01-26 14:04:40 +0100835 /*
836 * The HWRS method return informations about the hardware.
837 * 0x80 bit is for WLAN, 0x100 for Bluetooth.
838 * The significance of others is yet to be found.
839 * If we don't find the method, we assume the device are present.
840 */
Corentin Chary9a816852007-03-11 10:25:38 +0100841 status =
842 acpi_evaluate_integer(hotk->handle, "HRWS", NULL, &hwrs_result);
843 if (ACPI_FAILURE(status))
Corentin Chary4564de12007-01-26 14:04:40 +0100844 hwrs_result = WL_HWRS | BT_HWRS;
845
Len Brown8def05f2007-01-30 01:46:43 -0500846 if (hwrs_result & WL_HWRS)
Corentin Chary4564de12007-01-26 14:04:40 +0100847 ASUS_HANDLE_INIT(wl_switch);
Len Brown8def05f2007-01-30 01:46:43 -0500848 if (hwrs_result & BT_HWRS)
Corentin Chary4564de12007-01-26 14:04:40 +0100849 ASUS_HANDLE_INIT(bt_switch);
850
851 ASUS_HANDLE_INIT(wireless_status);
852
Corentin Chary6b7091e2007-01-26 14:04:45 +0100853 ASUS_HANDLE_INIT(brightness_set);
854 ASUS_HANDLE_INIT(brightness_get);
855
856 ASUS_HANDLE_INIT(lcd_switch);
857
Corentin Chary78127b42007-01-26 14:04:49 +0100858 ASUS_HANDLE_INIT(display_set);
859 ASUS_HANDLE_INIT(display_get);
860
Corentin Chary8b857352007-01-26 14:04:58 +0100861 /* There is a lot of models with "ALSL", but a few get
862 a real light sens, so we need to check it. */
Len Brown8def05f2007-01-30 01:46:43 -0500863 if (ASUS_HANDLE_INIT(ls_switch))
Corentin Chary8b857352007-01-26 14:04:58 +0100864 ASUS_HANDLE_INIT(ls_level);
865
Corentin Chary85091b72007-01-26 14:04:30 +0100866 kfree(model);
867
868 return AE_OK;
869}
870
871static int asus_hotk_check(void)
872{
873 int result = 0;
874
875 result = acpi_bus_get_status(hotk->device);
876 if (result)
877 return result;
878
879 if (hotk->device->status.present) {
880 result = asus_hotk_get_info();
881 } else {
882 printk(ASUS_ERR "Hotkey device not present, aborting\n");
883 return -EINVAL;
884 }
885
886 return result;
887}
888
889static int asus_hotk_found;
890
891static int asus_hotk_add(struct acpi_device *device)
892{
893 acpi_status status = AE_OK;
894 int result;
895
896 if (!device)
897 return -EINVAL;
898
899 printk(ASUS_NOTICE "Asus Laptop Support version %s\n",
900 ASUS_LAPTOP_VERSION);
901
902 hotk = kmalloc(sizeof(struct asus_hotk), GFP_KERNEL);
903 if (!hotk)
904 return -ENOMEM;
905 memset(hotk, 0, sizeof(struct asus_hotk));
906
907 hotk->handle = device->handle;
908 strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME);
909 strcpy(acpi_device_class(device), ASUS_HOTK_CLASS);
910 acpi_driver_data(device) = hotk;
911 hotk->device = device;
912
913 result = asus_hotk_check();
914 if (result)
915 goto end;
916
917 asus_hotk_add_fs();
918
919 /*
920 * We install the handler, it will receive the hotk in parameter, so, we
921 * could add other data to the hotk struct
922 */
923 status = acpi_install_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY,
924 asus_hotk_notify, hotk);
925 if (ACPI_FAILURE(status))
926 printk(ASUS_ERR "Error installing notify handler\n");
927
928 asus_hotk_found = 1;
929
Corentin Chary6b7091e2007-01-26 14:04:45 +0100930 /* WLED and BLED are on by default */
Corentin Chary4564de12007-01-26 14:04:40 +0100931 write_status(bt_switch_handle, 1, BT_ON, 0);
932 write_status(wl_switch_handle, 1, WL_ON, 0);
933
Corentin Chary6b7091e2007-01-26 14:04:45 +0100934 /* LCD Backlight is on by default */
935 write_status(NULL, 1, LCD_ON, 0);
936
Corentin Chary722ad972007-01-26 14:04:55 +0100937 /* LED display is off by default */
938 hotk->ledd_status = 0xFFF;
939
Len Brown8def05f2007-01-30 01:46:43 -0500940 /* Set initial values of light sensor and level */
941 hotk->light_switch = 1; /* Default to light sensor disabled */
942 hotk->light_level = 0; /* level 5 for sensor sensitivity */
Corentin Chary8b857352007-01-26 14:04:58 +0100943
Len Brown8def05f2007-01-30 01:46:43 -0500944 if (ls_switch_handle)
945 set_light_sens_switch(hotk->light_switch);
Corentin Chary8b857352007-01-26 14:04:58 +0100946
Len Brown8def05f2007-01-30 01:46:43 -0500947 if (ls_level_handle)
948 set_light_sens_level(hotk->light_level);
Corentin Chary8b857352007-01-26 14:04:58 +0100949
Corentin Chary85091b72007-01-26 14:04:30 +0100950 end:
951 if (result) {
952 kfree(hotk->name);
953 kfree(hotk);
954 }
955
956 return result;
957}
958
959static int asus_hotk_remove(struct acpi_device *device, int type)
960{
961 acpi_status status = 0;
962
963 if (!device || !acpi_driver_data(device))
964 return -EINVAL;
965
966 status = acpi_remove_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY,
967 asus_hotk_notify);
968 if (ACPI_FAILURE(status))
969 printk(ASUS_ERR "Error removing notify handler\n");
970
971 kfree(hotk->name);
972 kfree(hotk);
973
974 return 0;
975}
976
Corentin Chary6b7091e2007-01-26 14:04:45 +0100977static void asus_backlight_exit(void)
978{
Len Brown8def05f2007-01-30 01:46:43 -0500979 if (asus_backlight_device)
Corentin Chary6b7091e2007-01-26 14:04:45 +0100980 backlight_device_unregister(asus_backlight_device);
981}
982
Corentin Charybe18cda2007-01-26 14:04:35 +0100983#define ASUS_LED_UNREGISTER(object) \
984 if(object##_led.class_dev \
985 && !IS_ERR(object##_led.class_dev)) \
986 led_classdev_unregister(&object##_led)
987
988static void asus_led_exit(void)
989{
990 ASUS_LED_UNREGISTER(mled);
991 ASUS_LED_UNREGISTER(tled);
992 ASUS_LED_UNREGISTER(pled);
993 ASUS_LED_UNREGISTER(rled);
994
995 destroy_workqueue(led_workqueue);
996}
997
Corentin Chary85091b72007-01-26 14:04:30 +0100998static void __exit asus_laptop_exit(void)
999{
Corentin Chary6b7091e2007-01-26 14:04:45 +01001000 asus_backlight_exit();
Corentin Charybe18cda2007-01-26 14:04:35 +01001001 asus_led_exit();
1002
Corentin Chary85091b72007-01-26 14:04:30 +01001003 acpi_bus_unregister_driver(&asus_hotk_driver);
Len Brown8def05f2007-01-30 01:46:43 -05001004 sysfs_remove_group(&asuspf_device->dev.kobj, &asuspf_attribute_group);
1005 platform_device_unregister(asuspf_device);
1006 platform_driver_unregister(&asuspf_driver);
Corentin Chary85091b72007-01-26 14:04:30 +01001007}
1008
Len Brown8def05f2007-01-30 01:46:43 -05001009static int asus_backlight_init(struct device *dev)
Corentin Chary6b7091e2007-01-26 14:04:45 +01001010{
1011 struct backlight_device *bd;
1012
Len Brown8def05f2007-01-30 01:46:43 -05001013 if (brightness_set_handle && lcd_switch_handle) {
1014 bd = backlight_device_register(ASUS_HOTK_FILE, dev,
Richard Purdie599a52d2007-02-10 23:07:48 +00001015 NULL, &asusbl_ops);
Len Brown8def05f2007-01-30 01:46:43 -05001016 if (IS_ERR(bd)) {
Corentin Chary6b7091e2007-01-26 14:04:45 +01001017 printk(ASUS_ERR
1018 "Could not register asus backlight device\n");
1019 asus_backlight_device = NULL;
1020 return PTR_ERR(bd);
1021 }
1022
1023 asus_backlight_device = bd;
1024
Richard Purdie599a52d2007-02-10 23:07:48 +00001025 bd->props.max_brightness = 15;
1026 bd->props.brightness = read_brightness(NULL);
1027 bd->props.power = FB_BLANK_UNBLANK;
Richard Purdie28ee0862007-02-08 22:25:09 +00001028 backlight_update_status(bd);
Corentin Chary6b7091e2007-01-26 14:04:45 +01001029 }
1030 return 0;
1031}
1032
Corentin Charybe18cda2007-01-26 14:04:35 +01001033static int asus_led_register(acpi_handle handle,
Len Brown8def05f2007-01-30 01:46:43 -05001034 struct led_classdev *ldev, struct device *dev)
Corentin Charybe18cda2007-01-26 14:04:35 +01001035{
Len Brown8def05f2007-01-30 01:46:43 -05001036 if (!handle)
Corentin Charybe18cda2007-01-26 14:04:35 +01001037 return 0;
1038
1039 return led_classdev_register(dev, ldev);
1040}
Len Brown8def05f2007-01-30 01:46:43 -05001041
Corentin Charybe18cda2007-01-26 14:04:35 +01001042#define ASUS_LED_REGISTER(object, device) \
1043 asus_led_register(object##_set_handle, &object##_led, device)
1044
Len Brown8def05f2007-01-30 01:46:43 -05001045static int asus_led_init(struct device *dev)
Corentin Charybe18cda2007-01-26 14:04:35 +01001046{
1047 int rv;
1048
1049 rv = ASUS_LED_REGISTER(mled, dev);
Len Brown8def05f2007-01-30 01:46:43 -05001050 if (rv)
Corentin Charybe18cda2007-01-26 14:04:35 +01001051 return rv;
1052
1053 rv = ASUS_LED_REGISTER(tled, dev);
Len Brown8def05f2007-01-30 01:46:43 -05001054 if (rv)
Corentin Charybe18cda2007-01-26 14:04:35 +01001055 return rv;
1056
1057 rv = ASUS_LED_REGISTER(rled, dev);
Len Brown8def05f2007-01-30 01:46:43 -05001058 if (rv)
Corentin Charybe18cda2007-01-26 14:04:35 +01001059 return rv;
1060
1061 rv = ASUS_LED_REGISTER(pled, dev);
Len Brown8def05f2007-01-30 01:46:43 -05001062 if (rv)
Corentin Charybe18cda2007-01-26 14:04:35 +01001063 return rv;
1064
1065 led_workqueue = create_singlethread_workqueue("led_workqueue");
Len Brown8def05f2007-01-30 01:46:43 -05001066 if (!led_workqueue)
Corentin Charybe18cda2007-01-26 14:04:35 +01001067 return -ENOMEM;
1068
1069 return 0;
1070}
1071
Corentin Chary85091b72007-01-26 14:04:30 +01001072static int __init asus_laptop_init(void)
1073{
Corentin Charybe18cda2007-01-26 14:04:35 +01001074 struct device *dev;
Corentin Chary85091b72007-01-26 14:04:30 +01001075 int result;
1076
1077 if (acpi_disabled)
1078 return -ENODEV;
1079
Corentin Chary85091b72007-01-26 14:04:30 +01001080 result = acpi_bus_register_driver(&asus_hotk_driver);
1081 if (result < 0)
1082 return result;
1083
1084 /*
1085 * This is a bit of a kludge. We only want this module loaded
1086 * for ASUS systems, but there's currently no way to probe the
1087 * ACPI namespace for ASUS HIDs. So we just return failure if
1088 * we didn't find one, which will cause the module to be
1089 * unloaded.
1090 */
1091 if (!asus_hotk_found) {
1092 acpi_bus_unregister_driver(&asus_hotk_driver);
1093 return -ENODEV;
1094 }
1095
Corentin Charybe18cda2007-01-26 14:04:35 +01001096 dev = acpi_get_physical_device(hotk->device->handle);
1097
Corentin Chary6b7091e2007-01-26 14:04:45 +01001098 result = asus_backlight_init(dev);
Len Brown8def05f2007-01-30 01:46:43 -05001099 if (result)
Corentin Chary6b7091e2007-01-26 14:04:45 +01001100 goto fail_backlight;
1101
Corentin Charybe18cda2007-01-26 14:04:35 +01001102 result = asus_led_init(dev);
Len Brown8def05f2007-01-30 01:46:43 -05001103 if (result)
Corentin Charybe18cda2007-01-26 14:04:35 +01001104 goto fail_led;
1105
Len Brown8def05f2007-01-30 01:46:43 -05001106 /* Register platform stuff */
Corentin Chary85091b72007-01-26 14:04:30 +01001107 result = platform_driver_register(&asuspf_driver);
Len Brown8def05f2007-01-30 01:46:43 -05001108 if (result)
1109 goto fail_platform_driver;
Corentin Chary85091b72007-01-26 14:04:30 +01001110
Len Brown8def05f2007-01-30 01:46:43 -05001111 asuspf_device = platform_device_alloc(ASUS_HOTK_FILE, -1);
1112 if (!asuspf_device) {
1113 result = -ENOMEM;
1114 goto fail_platform_device1;
1115 }
Corentin Chary85091b72007-01-26 14:04:30 +01001116
Len Brown8def05f2007-01-30 01:46:43 -05001117 result = platform_device_add(asuspf_device);
1118 if (result)
1119 goto fail_platform_device2;
Corentin Chary85091b72007-01-26 14:04:30 +01001120
Len Brown8def05f2007-01-30 01:46:43 -05001121 result = sysfs_create_group(&asuspf_device->dev.kobj,
Corentin Chary85091b72007-01-26 14:04:30 +01001122 &asuspf_attribute_group);
Len Brown8def05f2007-01-30 01:46:43 -05001123 if (result)
1124 goto fail_sysfs;
Corentin Chary85091b72007-01-26 14:04:30 +01001125
Len Brown8def05f2007-01-30 01:46:43 -05001126 return 0;
Corentin Chary85091b72007-01-26 14:04:30 +01001127
Len Brown8def05f2007-01-30 01:46:43 -05001128 fail_sysfs:
1129 platform_device_del(asuspf_device);
Corentin Chary85091b72007-01-26 14:04:30 +01001130
Len Brown8def05f2007-01-30 01:46:43 -05001131 fail_platform_device2:
Corentin Chary85091b72007-01-26 14:04:30 +01001132 platform_device_put(asuspf_device);
1133
Len Brown8def05f2007-01-30 01:46:43 -05001134 fail_platform_device1:
1135 platform_driver_unregister(&asuspf_driver);
Corentin Chary85091b72007-01-26 14:04:30 +01001136
Len Brown8def05f2007-01-30 01:46:43 -05001137 fail_platform_driver:
Corentin Charybe18cda2007-01-26 14:04:35 +01001138 asus_led_exit();
1139
Len Brown8def05f2007-01-30 01:46:43 -05001140 fail_led:
Corentin Chary6b7091e2007-01-26 14:04:45 +01001141 asus_backlight_exit();
1142
Len Brown8def05f2007-01-30 01:46:43 -05001143 fail_backlight:
Corentin Chary85091b72007-01-26 14:04:30 +01001144
1145 return result;
1146}
1147
1148module_init(asus_laptop_init);
1149module_exit(asus_laptop_exit);