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Diffstat (limited to 'drivers/misc/compal-laptop.c')
-rw-r--r--drivers/misc/compal-laptop.c406
1 files changed, 0 insertions, 406 deletions
diff --git a/drivers/misc/compal-laptop.c b/drivers/misc/compal-laptop.c
deleted file mode 100644
index 11003bba10d3..000000000000
--- a/drivers/misc/compal-laptop.c
+++ /dev/null
@@ -1,406 +0,0 @@
1/*-*-linux-c-*-*/
2
3/*
4 Copyright (C) 2008 Cezary Jackiewicz <cezary.jackiewicz (at) gmail.com>
5
6 based on MSI driver
7
8 Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de>
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 02110-1301, USA.
24 */
25
26/*
27 * comapl-laptop.c - Compal laptop support.
28 *
29 * This driver exports a few files in /sys/devices/platform/compal-laptop/:
30 *
31 * wlan - wlan subsystem state: contains 0 or 1 (rw)
32 *
33 * bluetooth - Bluetooth subsystem state: contains 0 or 1 (rw)
34 *
35 * raw - raw value taken from embedded controller register (ro)
36 *
37 * In addition to these platform device attributes the driver
38 * registers itself in the Linux backlight control subsystem and is
39 * available to userspace under /sys/class/backlight/compal-laptop/.
40 *
41 * This driver might work on other laptops produced by Compal. If you
42 * want to try it you can pass force=1 as argument to the module which
43 * will force it to load even when the DMI data doesn't identify the
44 * laptop as FL9x.
45 */
46
47#include <linux/module.h>
48#include <linux/kernel.h>
49#include <linux/init.h>
50#include <linux/acpi.h>
51#include <linux/dmi.h>
52#include <linux/backlight.h>
53#include <linux/platform_device.h>
54#include <linux/autoconf.h>
55
56#define COMPAL_DRIVER_VERSION "0.2.6"
57
58#define COMPAL_LCD_LEVEL_MAX 8
59
60#define COMPAL_EC_COMMAND_WIRELESS 0xBB
61#define COMPAL_EC_COMMAND_LCD_LEVEL 0xB9
62
63#define KILLSWITCH_MASK 0x10
64#define WLAN_MASK 0x01
65#define BT_MASK 0x02
66
67static int force;
68module_param(force, bool, 0);
69MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
70
71/* Hardware access */
72
73static int set_lcd_level(int level)
74{
75 if (level < 0 || level >= COMPAL_LCD_LEVEL_MAX)
76 return -EINVAL;
77
78 ec_write(COMPAL_EC_COMMAND_LCD_LEVEL, level);
79
80 return 0;
81}
82
83static int get_lcd_level(void)
84{
85 u8 result;
86
87 ec_read(COMPAL_EC_COMMAND_LCD_LEVEL, &result);
88
89 return (int) result;
90}
91
92static int set_wlan_state(int state)
93{
94 u8 result, value;
95
96 ec_read(COMPAL_EC_COMMAND_WIRELESS, &result);
97
98 if ((result & KILLSWITCH_MASK) == 0)
99 return -EINVAL;
100 else {
101 if (state)
102 value = (u8) (result | WLAN_MASK);
103 else
104 value = (u8) (result & ~WLAN_MASK);
105 ec_write(COMPAL_EC_COMMAND_WIRELESS, value);
106 }
107
108 return 0;
109}
110
111static int set_bluetooth_state(int state)
112{
113 u8 result, value;
114
115 ec_read(COMPAL_EC_COMMAND_WIRELESS, &result);
116
117 if ((result & KILLSWITCH_MASK) == 0)
118 return -EINVAL;
119 else {
120 if (state)
121 value = (u8) (result | BT_MASK);
122 else
123 value = (u8) (result & ~BT_MASK);
124 ec_write(COMPAL_EC_COMMAND_WIRELESS, value);
125 }
126
127 return 0;
128}
129
130static int get_wireless_state(int *wlan, int *bluetooth)
131{
132 u8 result;
133
134 ec_read(COMPAL_EC_COMMAND_WIRELESS, &result);
135
136 if (wlan) {
137 if ((result & KILLSWITCH_MASK) == 0)
138 *wlan = 0;
139 else
140 *wlan = result & WLAN_MASK;
141 }
142
143 if (bluetooth) {
144 if ((result & KILLSWITCH_MASK) == 0)
145 *bluetooth = 0;
146 else
147 *bluetooth = (result & BT_MASK) >> 1;
148 }
149
150 return 0;
151}
152
153/* Backlight device stuff */
154
155static int bl_get_brightness(struct backlight_device *b)
156{
157 return get_lcd_level();
158}
159
160
161static int bl_update_status(struct backlight_device *b)
162{
163 return set_lcd_level(b->props.brightness);
164}
165
166static struct backlight_ops compalbl_ops = {
167 .get_brightness = bl_get_brightness,
168 .update_status = bl_update_status,
169};
170
171static struct backlight_device *compalbl_device;
172
173/* Platform device */
174
175static ssize_t show_wlan(struct device *dev,
176 struct device_attribute *attr, char *buf)
177{
178 int ret, enabled;
179
180 ret = get_wireless_state(&enabled, NULL);
181 if (ret < 0)
182 return ret;
183
184 return sprintf(buf, "%i\n", enabled);
185}
186
187static ssize_t show_raw(struct device *dev,
188 struct device_attribute *attr, char *buf)
189{
190 u8 result;
191
192 ec_read(COMPAL_EC_COMMAND_WIRELESS, &result);
193
194 return sprintf(buf, "%i\n", result);
195}
196
197static ssize_t show_bluetooth(struct device *dev,
198 struct device_attribute *attr, char *buf)
199{
200 int ret, enabled;
201
202 ret = get_wireless_state(NULL, &enabled);
203 if (ret < 0)
204 return ret;
205
206 return sprintf(buf, "%i\n", enabled);
207}
208
209static ssize_t store_wlan_state(struct device *dev,
210 struct device_attribute *attr, const char *buf, size_t count)
211{
212 int state, ret;
213
214 if (sscanf(buf, "%i", &state) != 1 || (state < 0 || state > 1))
215 return -EINVAL;
216
217 ret = set_wlan_state(state);
218 if (ret < 0)
219 return ret;
220
221 return count;
222}
223
224static ssize_t store_bluetooth_state(struct device *dev,
225 struct device_attribute *attr, const char *buf, size_t count)
226{
227 int state, ret;
228
229 if (sscanf(buf, "%i", &state) != 1 || (state < 0 || state > 1))
230 return -EINVAL;
231
232 ret = set_bluetooth_state(state);
233 if (ret < 0)
234 return ret;
235
236 return count;
237}
238
239static DEVICE_ATTR(bluetooth, 0644, show_bluetooth, store_bluetooth_state);
240static DEVICE_ATTR(wlan, 0644, show_wlan, store_wlan_state);
241static DEVICE_ATTR(raw, 0444, show_raw, NULL);
242
243static struct attribute *compal_attributes[] = {
244 &dev_attr_bluetooth.attr,
245 &dev_attr_wlan.attr,
246 &dev_attr_raw.attr,
247 NULL
248};
249
250static struct attribute_group compal_attribute_group = {
251 .attrs = compal_attributes
252};
253
254static struct platform_driver compal_driver = {
255 .driver = {
256 .name = "compal-laptop",
257 .owner = THIS_MODULE,
258 }
259};
260
261static struct platform_device *compal_device;
262
263/* Initialization */
264
265static int dmi_check_cb(const struct dmi_system_id *id)
266{
267 printk(KERN_INFO "compal-laptop: Identified laptop model '%s'.\n",
268 id->ident);
269
270 return 0;
271}
272
273static struct dmi_system_id __initdata compal_dmi_table[] = {
274 {
275 .ident = "FL90/IFL90",
276 .matches = {
277 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
278 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
279 },
280 .callback = dmi_check_cb
281 },
282 {
283 .ident = "FL90/IFL90",
284 .matches = {
285 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
286 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
287 },
288 .callback = dmi_check_cb
289 },
290 {
291 .ident = "FL91/IFL91",
292 .matches = {
293 DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
294 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
295 },
296 .callback = dmi_check_cb
297 },
298 {
299 .ident = "FL92/JFL92",
300 .matches = {
301 DMI_MATCH(DMI_BOARD_NAME, "JFL92"),
302 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
303 },
304 .callback = dmi_check_cb
305 },
306 {
307 .ident = "FT00/IFT00",
308 .matches = {
309 DMI_MATCH(DMI_BOARD_NAME, "IFT00"),
310 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
311 },
312 .callback = dmi_check_cb
313 },
314 { }
315};
316
317static int __init compal_init(void)
318{
319 int ret;
320
321 if (acpi_disabled)
322 return -ENODEV;
323
324 if (!force && !dmi_check_system(compal_dmi_table))
325 return -ENODEV;
326
327 /* Register backlight stuff */
328
329 if (!acpi_video_backlight_support()) {
330 compalbl_device = backlight_device_register("compal-laptop", NULL, NULL,
331 &compalbl_ops);
332 if (IS_ERR(compalbl_device))
333 return PTR_ERR(compalbl_device);
334
335 compalbl_device->props.max_brightness = COMPAL_LCD_LEVEL_MAX-1;
336 }
337
338 ret = platform_driver_register(&compal_driver);
339 if (ret)
340 goto fail_backlight;
341
342 /* Register platform stuff */
343
344 compal_device = platform_device_alloc("compal-laptop", -1);
345 if (!compal_device) {
346 ret = -ENOMEM;
347 goto fail_platform_driver;
348 }
349
350 ret = platform_device_add(compal_device);
351 if (ret)
352 goto fail_platform_device1;
353
354 ret = sysfs_create_group(&compal_device->dev.kobj,
355 &compal_attribute_group);
356 if (ret)
357 goto fail_platform_device2;
358
359 printk(KERN_INFO "compal-laptop: driver "COMPAL_DRIVER_VERSION
360 " successfully loaded.\n");
361
362 return 0;
363
364fail_platform_device2:
365
366 platform_device_del(compal_device);
367
368fail_platform_device1:
369
370 platform_device_put(compal_device);
371
372fail_platform_driver:
373
374 platform_driver_unregister(&compal_driver);
375
376fail_backlight:
377
378 backlight_device_unregister(compalbl_device);
379
380 return ret;
381}
382
383static void __exit compal_cleanup(void)
384{
385
386 sysfs_remove_group(&compal_device->dev.kobj, &compal_attribute_group);
387 platform_device_unregister(compal_device);
388 platform_driver_unregister(&compal_driver);
389 backlight_device_unregister(compalbl_device);
390
391 printk(KERN_INFO "compal-laptop: driver unloaded.\n");
392}
393
394module_init(compal_init);
395module_exit(compal_cleanup);
396
397MODULE_AUTHOR("Cezary Jackiewicz");
398MODULE_DESCRIPTION("Compal Laptop Support");
399MODULE_VERSION(COMPAL_DRIVER_VERSION);
400MODULE_LICENSE("GPL");
401
402MODULE_ALIAS("dmi:*:rnIFL90:rvrIFT00:*");
403MODULE_ALIAS("dmi:*:rnIFL90:rvrREFERENCE:*");
404MODULE_ALIAS("dmi:*:rnIFL91:rvrIFT00:*");
405MODULE_ALIAS("dmi:*:rnJFL92:rvrIFT00:*");
406MODULE_ALIAS("dmi:*:rnIFT00:rvrIFT00:*");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-12 11:45:18 -0500