4 Copyright (C) 2008 Cezary Jackiewicz <cezary.jackiewicz (at) gmail.com>
8 Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de>
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.
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.
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
27 * comapl-laptop.c - Compal laptop support.
29 * The driver registers itself with the rfkill subsystem and
30 * the Linux backlight control subsystem.
32 * This driver might work on other laptops produced by Compal. If you
33 * want to try it you can pass force=1 as argument to the module which
34 * will force it to load even when the DMI data doesn't identify the
38 #include <linux/module.h>
39 #include <linux/kernel.h>
40 #include <linux/init.h>
41 #include <linux/acpi.h>
42 #include <linux/dmi.h>
43 #include <linux/backlight.h>
44 #include <linux/platform_device.h>
45 #include <linux/rfkill.h>
47 #define COMPAL_DRIVER_VERSION "0.2.6"
49 #define COMPAL_LCD_LEVEL_MAX 8
51 #define COMPAL_EC_COMMAND_WIRELESS 0xBB
52 #define COMPAL_EC_COMMAND_LCD_LEVEL 0xB9
54 #define KILLSWITCH_MASK 0x10
55 #define WLAN_MASK 0x01
58 static struct rfkill *wifi_rfkill;
59 static struct rfkill *bt_rfkill;
60 static struct platform_device *compal_device;
63 module_param(force, bool, 0);
64 MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
68 static int set_lcd_level(int level)
70 if (level < 0 || level >= COMPAL_LCD_LEVEL_MAX)
73 ec_write(COMPAL_EC_COMMAND_LCD_LEVEL, level);
78 static int get_lcd_level(void)
82 ec_read(COMPAL_EC_COMMAND_LCD_LEVEL, &result);
87 static int compal_rfkill_set(void *data, bool blocked)
89 unsigned long radio = (unsigned long) data;
92 ec_read(COMPAL_EC_COMMAND_WIRELESS, &result);
95 value = (u8) (result | radio);
97 value = (u8) (result & ~radio);
98 ec_write(COMPAL_EC_COMMAND_WIRELESS, value);
103 static void compal_rfkill_poll(struct rfkill *rfkill, void *data)
108 ec_read(COMPAL_EC_COMMAND_WIRELESS, &result);
110 hw_blocked = !(result & KILLSWITCH_MASK);
111 rfkill_set_hw_state(rfkill, hw_blocked);
114 static const struct rfkill_ops compal_rfkill_ops = {
115 .poll = compal_rfkill_poll,
116 .set_block = compal_rfkill_set,
119 static int setup_rfkill(void)
123 wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev,
124 RFKILL_TYPE_WLAN, &compal_rfkill_ops,
129 ret = rfkill_register(wifi_rfkill);
133 bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev,
134 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops,
138 goto err_allocate_bt;
140 ret = rfkill_register(bt_rfkill);
142 goto err_register_bt;
147 rfkill_destroy(bt_rfkill);
150 rfkill_unregister(wifi_rfkill);
153 rfkill_destroy(wifi_rfkill);
158 /* Backlight device stuff */
160 static int bl_get_brightness(struct backlight_device *b)
162 return get_lcd_level();
166 static int bl_update_status(struct backlight_device *b)
168 return set_lcd_level(b->props.brightness);
171 static struct backlight_ops compalbl_ops = {
172 .get_brightness = bl_get_brightness,
173 .update_status = bl_update_status,
176 static struct backlight_device *compalbl_device;
179 static struct platform_driver compal_driver = {
181 .name = "compal-laptop",
182 .owner = THIS_MODULE,
188 static int dmi_check_cb(const struct dmi_system_id *id)
190 printk(KERN_INFO "compal-laptop: Identified laptop model '%s'.\n",
196 static struct dmi_system_id __initdata compal_dmi_table[] = {
198 .ident = "FL90/IFL90",
200 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
201 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
203 .callback = dmi_check_cb
206 .ident = "FL90/IFL90",
208 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
209 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
211 .callback = dmi_check_cb
214 .ident = "FL91/IFL91",
216 DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
217 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
219 .callback = dmi_check_cb
222 .ident = "FL92/JFL92",
224 DMI_MATCH(DMI_BOARD_NAME, "JFL92"),
225 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
227 .callback = dmi_check_cb
230 .ident = "FT00/IFT00",
232 DMI_MATCH(DMI_BOARD_NAME, "IFT00"),
233 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
235 .callback = dmi_check_cb
238 .ident = "Dell Mini 9",
240 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
241 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"),
243 .callback = dmi_check_cb
246 .ident = "Dell Mini 10",
248 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
249 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"),
251 .callback = dmi_check_cb
254 .ident = "Dell Mini 10v",
256 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
257 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"),
259 .callback = dmi_check_cb
262 .ident = "Dell Inspiron 11z",
264 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
265 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"),
267 .callback = dmi_check_cb
270 .ident = "Dell Mini 12",
272 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
273 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"),
275 .callback = dmi_check_cb
281 static int __init compal_init(void)
288 if (!force && !dmi_check_system(compal_dmi_table))
291 /* Register backlight stuff */
293 if (!acpi_video_backlight_support()) {
294 struct backlight_properties props;
295 memset(&props, 0, sizeof(struct backlight_properties));
296 props.max_brightness = COMPAL_LCD_LEVEL_MAX - 1;
297 compalbl_device = backlight_device_register("compal-laptop",
301 if (IS_ERR(compalbl_device))
302 return PTR_ERR(compalbl_device);
305 ret = platform_driver_register(&compal_driver);
309 /* Register platform stuff */
311 compal_device = platform_device_alloc("compal-laptop", -1);
312 if (!compal_device) {
314 goto fail_platform_driver;
317 ret = platform_device_add(compal_device);
319 goto fail_platform_device;
321 ret = setup_rfkill();
325 printk(KERN_INFO "compal-laptop: driver "COMPAL_DRIVER_VERSION
326 " successfully loaded.\n");
331 platform_device_del(compal_device);
333 fail_platform_device:
335 platform_device_put(compal_device);
337 fail_platform_driver:
339 platform_driver_unregister(&compal_driver);
343 backlight_device_unregister(compalbl_device);
348 static void __exit compal_cleanup(void)
351 platform_device_unregister(compal_device);
352 platform_driver_unregister(&compal_driver);
353 backlight_device_unregister(compalbl_device);
354 rfkill_unregister(wifi_rfkill);
355 rfkill_destroy(wifi_rfkill);
356 rfkill_unregister(bt_rfkill);
357 rfkill_destroy(bt_rfkill);
359 printk(KERN_INFO "compal-laptop: driver unloaded.\n");
362 module_init(compal_init);
363 module_exit(compal_cleanup);
365 MODULE_AUTHOR("Cezary Jackiewicz");
366 MODULE_DESCRIPTION("Compal Laptop Support");
367 MODULE_VERSION(COMPAL_DRIVER_VERSION);
368 MODULE_LICENSE("GPL");
370 MODULE_ALIAS("dmi:*:rnIFL90:rvrIFT00:*");
371 MODULE_ALIAS("dmi:*:rnIFL90:rvrREFERENCE:*");
372 MODULE_ALIAS("dmi:*:rnIFL91:rvrIFT00:*");
373 MODULE_ALIAS("dmi:*:rnJFL92:rvrIFT00:*");
374 MODULE_ALIAS("dmi:*:rnIFT00:rvrIFT00:*");
375 MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron910:*");
376 MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1010:*");
377 MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1011:*");
378 MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1110:*");
379 MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1210:*");