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Commit | Line | Data |
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2d70b73a GKH |
1 | /* |
2 | * Samsung Laptop driver | |
3 | * | |
4 | * Copyright (C) 2009,2011 Greg Kroah-Hartman (gregkh@suse.de) | |
5 | * Copyright (C) 2009,2011 Novell Inc. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License version 2 as published by | |
9 | * the Free Software Foundation. | |
10 | * | |
11 | */ | |
12 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
13 | ||
14 | #include <linux/kernel.h> | |
15 | #include <linux/init.h> | |
16 | #include <linux/module.h> | |
17 | #include <linux/delay.h> | |
18 | #include <linux/pci.h> | |
19 | #include <linux/backlight.h> | |
f674ebf1 | 20 | #include <linux/leds.h> |
2d70b73a GKH |
21 | #include <linux/fb.h> |
22 | #include <linux/dmi.h> | |
23 | #include <linux/platform_device.h> | |
24 | #include <linux/rfkill.h> | |
f34cd9ca | 25 | #include <linux/acpi.h> |
5b80fc40 CC |
26 | #include <linux/seq_file.h> |
27 | #include <linux/debugfs.h> | |
82c333aa | 28 | #include <linux/ctype.h> |
a979e2e2 | 29 | #include <acpi/video.h> |
2d70b73a GKH |
30 | |
31 | /* | |
32 | * This driver is needed because a number of Samsung laptops do not hook | |
33 | * their control settings through ACPI. So we have to poke around in the | |
34 | * BIOS to do things like brightness values, and "special" key controls. | |
35 | */ | |
36 | ||
37 | /* | |
38 | * We have 0 - 8 as valid brightness levels. The specs say that level 0 should | |
39 | * be reserved by the BIOS (which really doesn't make much sense), we tell | |
40 | * userspace that the value is 0 - 7 and then just tell the hardware 1 - 8 | |
41 | */ | |
42 | #define MAX_BRIGHT 0x07 | |
43 | ||
44 | ||
45 | #define SABI_IFACE_MAIN 0x00 | |
46 | #define SABI_IFACE_SUB 0x02 | |
47 | #define SABI_IFACE_COMPLETE 0x04 | |
48 | #define SABI_IFACE_DATA 0x05 | |
49 | ||
84d482f2 CC |
50 | #define WL_STATUS_WLAN 0x0 |
51 | #define WL_STATUS_BT 0x2 | |
52 | ||
7e960711 CC |
53 | /* Structure get/set data using sabi */ |
54 | struct sabi_data { | |
55 | union { | |
56 | struct { | |
57 | u32 d0; | |
58 | u32 d1; | |
59 | u16 d2; | |
60 | u8 d3; | |
61 | }; | |
62 | u8 data[11]; | |
63 | }; | |
2d70b73a GKH |
64 | }; |
65 | ||
66 | struct sabi_header_offsets { | |
67 | u8 port; | |
68 | u8 re_mem; | |
69 | u8 iface_func; | |
70 | u8 en_mem; | |
71 | u8 data_offset; | |
72 | u8 data_segment; | |
73 | }; | |
74 | ||
75 | struct sabi_commands { | |
76 | /* | |
77 | * Brightness is 0 - 8, as described above. | |
78 | * Value 0 is for the BIOS to use | |
79 | */ | |
7e960711 CC |
80 | u16 get_brightness; |
81 | u16 set_brightness; | |
2d70b73a GKH |
82 | |
83 | /* | |
84 | * first byte: | |
85 | * 0x00 - wireless is off | |
86 | * 0x01 - wireless is on | |
87 | * second byte: | |
88 | * 0x02 - 3G is off | |
89 | * 0x03 - 3G is on | |
90 | * TODO, verify 3G is correct, that doesn't seem right... | |
91 | */ | |
7e960711 CC |
92 | u16 get_wireless_button; |
93 | u16 set_wireless_button; | |
2d70b73a GKH |
94 | |
95 | /* 0 is off, 1 is on */ | |
7e960711 CC |
96 | u16 get_backlight; |
97 | u16 set_backlight; | |
2d70b73a GKH |
98 | |
99 | /* | |
100 | * 0x80 or 0x00 - no action | |
101 | * 0x81 - recovery key pressed | |
102 | */ | |
7e960711 CC |
103 | u16 get_recovery_mode; |
104 | u16 set_recovery_mode; | |
2d70b73a GKH |
105 | |
106 | /* | |
107 | * on seclinux: 0 is low, 1 is high, | |
108 | * on swsmi: 0 is normal, 1 is silent, 2 is turbo | |
109 | */ | |
7e960711 CC |
110 | u16 get_performance_level; |
111 | u16 set_performance_level; | |
2d70b73a | 112 | |
cb5b5c91 CC |
113 | /* 0x80 is off, 0x81 is on */ |
114 | u16 get_battery_life_extender; | |
115 | u16 set_battery_life_extender; | |
116 | ||
3a75d378 CC |
117 | /* 0x80 is off, 0x81 is on */ |
118 | u16 get_usb_charge; | |
119 | u16 set_usb_charge; | |
120 | ||
84d482f2 CC |
121 | /* the first byte is for bluetooth and the third one is for wlan */ |
122 | u16 get_wireless_status; | |
123 | u16 set_wireless_status; | |
124 | ||
f674ebf1 CC |
125 | /* 0x81 to read, (0x82 | level << 8) to set, 0xaabb to enable */ |
126 | u16 kbd_backlight; | |
127 | ||
2d70b73a GKH |
128 | /* |
129 | * Tell the BIOS that Linux is running on this machine. | |
130 | * 81 is on, 80 is off | |
131 | */ | |
7e960711 | 132 | u16 set_linux; |
2d70b73a GKH |
133 | }; |
134 | ||
135 | struct sabi_performance_level { | |
136 | const char *name; | |
7e960711 | 137 | u16 value; |
2d70b73a GKH |
138 | }; |
139 | ||
140 | struct sabi_config { | |
84d482f2 | 141 | int sabi_version; |
2d70b73a GKH |
142 | const char *test_string; |
143 | u16 main_function; | |
144 | const struct sabi_header_offsets header_offsets; | |
145 | const struct sabi_commands commands; | |
146 | const struct sabi_performance_level performance_levels[4]; | |
147 | u8 min_brightness; | |
148 | u8 max_brightness; | |
149 | }; | |
150 | ||
151 | static const struct sabi_config sabi_configs[] = { | |
152 | { | |
84d482f2 CC |
153 | /* I don't know if it is really 2, but it it is |
154 | * less than 3 anyway */ | |
155 | .sabi_version = 2, | |
156 | ||
2d70b73a GKH |
157 | .test_string = "SECLINUX", |
158 | ||
159 | .main_function = 0x4c49, | |
160 | ||
161 | .header_offsets = { | |
162 | .port = 0x00, | |
163 | .re_mem = 0x02, | |
164 | .iface_func = 0x03, | |
165 | .en_mem = 0x04, | |
166 | .data_offset = 0x05, | |
167 | .data_segment = 0x07, | |
168 | }, | |
169 | ||
170 | .commands = { | |
171 | .get_brightness = 0x00, | |
172 | .set_brightness = 0x01, | |
173 | ||
174 | .get_wireless_button = 0x02, | |
175 | .set_wireless_button = 0x03, | |
176 | ||
177 | .get_backlight = 0x04, | |
178 | .set_backlight = 0x05, | |
179 | ||
180 | .get_recovery_mode = 0x06, | |
181 | .set_recovery_mode = 0x07, | |
182 | ||
183 | .get_performance_level = 0x08, | |
184 | .set_performance_level = 0x09, | |
185 | ||
cb5b5c91 CC |
186 | .get_battery_life_extender = 0xFFFF, |
187 | .set_battery_life_extender = 0xFFFF, | |
188 | ||
3a75d378 CC |
189 | .get_usb_charge = 0xFFFF, |
190 | .set_usb_charge = 0xFFFF, | |
191 | ||
84d482f2 CC |
192 | .get_wireless_status = 0xFFFF, |
193 | .set_wireless_status = 0xFFFF, | |
194 | ||
f674ebf1 CC |
195 | .kbd_backlight = 0xFFFF, |
196 | ||
2d70b73a GKH |
197 | .set_linux = 0x0a, |
198 | }, | |
199 | ||
200 | .performance_levels = { | |
201 | { | |
202 | .name = "silent", | |
203 | .value = 0, | |
204 | }, | |
205 | { | |
206 | .name = "normal", | |
207 | .value = 1, | |
208 | }, | |
209 | { }, | |
210 | }, | |
211 | .min_brightness = 1, | |
212 | .max_brightness = 8, | |
213 | }, | |
214 | { | |
84d482f2 CC |
215 | .sabi_version = 3, |
216 | ||
2d70b73a GKH |
217 | .test_string = "SwSmi@", |
218 | ||
219 | .main_function = 0x5843, | |
220 | ||
221 | .header_offsets = { | |
222 | .port = 0x00, | |
223 | .re_mem = 0x04, | |
224 | .iface_func = 0x02, | |
225 | .en_mem = 0x03, | |
226 | .data_offset = 0x05, | |
227 | .data_segment = 0x07, | |
228 | }, | |
229 | ||
230 | .commands = { | |
231 | .get_brightness = 0x10, | |
232 | .set_brightness = 0x11, | |
233 | ||
234 | .get_wireless_button = 0x12, | |
235 | .set_wireless_button = 0x13, | |
236 | ||
237 | .get_backlight = 0x2d, | |
238 | .set_backlight = 0x2e, | |
239 | ||
240 | .get_recovery_mode = 0xff, | |
241 | .set_recovery_mode = 0xff, | |
242 | ||
243 | .get_performance_level = 0x31, | |
244 | .set_performance_level = 0x32, | |
245 | ||
cb5b5c91 CC |
246 | .get_battery_life_extender = 0x65, |
247 | .set_battery_life_extender = 0x66, | |
248 | ||
3a75d378 CC |
249 | .get_usb_charge = 0x67, |
250 | .set_usb_charge = 0x68, | |
251 | ||
84d482f2 CC |
252 | .get_wireless_status = 0x69, |
253 | .set_wireless_status = 0x6a, | |
254 | ||
f674ebf1 CC |
255 | .kbd_backlight = 0x78, |
256 | ||
2d70b73a GKH |
257 | .set_linux = 0xff, |
258 | }, | |
259 | ||
260 | .performance_levels = { | |
261 | { | |
262 | .name = "normal", | |
263 | .value = 0, | |
264 | }, | |
265 | { | |
266 | .name = "silent", | |
267 | .value = 1, | |
268 | }, | |
269 | { | |
270 | .name = "overclock", | |
271 | .value = 2, | |
272 | }, | |
273 | { }, | |
274 | }, | |
275 | .min_brightness = 0, | |
276 | .max_brightness = 8, | |
277 | }, | |
278 | { }, | |
279 | }; | |
280 | ||
5b80fc40 CC |
281 | /* |
282 | * samsung-laptop/ - debugfs root directory | |
283 | * f0000_segment - dump f0000 segment | |
284 | * command - current command | |
285 | * data - current data | |
286 | * d0, d1, d2, d3 - data fields | |
287 | * call - call SABI using command and data | |
288 | * | |
289 | * This allow to call arbitrary sabi commands wihout | |
290 | * modifying the driver at all. | |
291 | * For example, setting the keyboard backlight brightness to 5 | |
292 | * | |
293 | * echo 0x78 > command | |
294 | * echo 0x0582 > d0 | |
295 | * echo 0 > d1 | |
296 | * echo 0 > d2 | |
297 | * echo 0 > d3 | |
298 | * cat call | |
299 | */ | |
300 | ||
301 | struct samsung_laptop_debug { | |
302 | struct dentry *root; | |
303 | struct sabi_data data; | |
304 | u16 command; | |
305 | ||
306 | struct debugfs_blob_wrapper f0000_wrapper; | |
307 | struct debugfs_blob_wrapper data_wrapper; | |
6f6ae06e | 308 | struct debugfs_blob_wrapper sdiag_wrapper; |
5b80fc40 CC |
309 | }; |
310 | ||
84d482f2 CC |
311 | struct samsung_laptop; |
312 | ||
313 | struct samsung_rfkill { | |
314 | struct samsung_laptop *samsung; | |
315 | struct rfkill *rfkill; | |
316 | enum rfkill_type type; | |
317 | }; | |
318 | ||
a6df4894 CC |
319 | struct samsung_laptop { |
320 | const struct sabi_config *config; | |
2d70b73a | 321 | |
a6df4894 CC |
322 | void __iomem *sabi; |
323 | void __iomem *sabi_iface; | |
324 | void __iomem *f0000_segment; | |
325 | ||
326 | struct mutex sabi_mutex; | |
327 | ||
5dea7a20 | 328 | struct platform_device *platform_device; |
a6df4894 | 329 | struct backlight_device *backlight_device; |
84d482f2 CC |
330 | |
331 | struct samsung_rfkill wlan; | |
332 | struct samsung_rfkill bluetooth; | |
a6df4894 | 333 | |
f674ebf1 CC |
334 | struct led_classdev kbd_led; |
335 | int kbd_led_wk; | |
336 | struct workqueue_struct *led_workqueue; | |
337 | struct work_struct kbd_led_work; | |
338 | ||
5b80fc40 | 339 | struct samsung_laptop_debug debug; |
a979e2e2 | 340 | struct samsung_quirks *quirks; |
5b80fc40 | 341 | |
f34cd9ca | 342 | bool handle_backlight; |
a6df4894 | 343 | bool has_stepping_quirk; |
6f6ae06e CC |
344 | |
345 | char sdiag[64]; | |
a6df4894 CC |
346 | }; |
347 | ||
a979e2e2 CC |
348 | struct samsung_quirks { |
349 | bool broken_acpi_video; | |
350 | }; | |
351 | ||
352 | static struct samsung_quirks samsung_unknown = {}; | |
5dea7a20 | 353 | |
a979e2e2 CC |
354 | static struct samsung_quirks samsung_broken_acpi_video = { |
355 | .broken_acpi_video = true, | |
356 | }; | |
2d70b73a | 357 | |
90ab5ee9 | 358 | static bool force; |
2d70b73a GKH |
359 | module_param(force, bool, 0); |
360 | MODULE_PARM_DESC(force, | |
361 | "Disable the DMI check and forces the driver to be loaded"); | |
362 | ||
90ab5ee9 | 363 | static bool debug; |
2d70b73a GKH |
364 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
365 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
366 | ||
7e960711 CC |
367 | static int sabi_command(struct samsung_laptop *samsung, u16 command, |
368 | struct sabi_data *in, | |
369 | struct sabi_data *out) | |
2d70b73a | 370 | { |
a6df4894 | 371 | const struct sabi_config *config = samsung->config; |
7e960711 | 372 | int ret = 0; |
a6df4894 | 373 | u16 port = readw(samsung->sabi + config->header_offsets.port); |
2d70b73a GKH |
374 | u8 complete, iface_data; |
375 | ||
a6df4894 | 376 | mutex_lock(&samsung->sabi_mutex); |
2d70b73a | 377 | |
7e960711 CC |
378 | if (debug) { |
379 | if (in) | |
2e777187 CC |
380 | pr_info("SABI command:0x%04x " |
381 | "data:{0x%08x, 0x%08x, 0x%04x, 0x%02x}", | |
7e960711 CC |
382 | command, in->d0, in->d1, in->d2, in->d3); |
383 | else | |
2e777187 | 384 | pr_info("SABI command:0x%04x", command); |
7e960711 CC |
385 | } |
386 | ||
2d70b73a | 387 | /* enable memory to be able to write to it */ |
a6df4894 | 388 | outb(readb(samsung->sabi + config->header_offsets.en_mem), port); |
2d70b73a GKH |
389 | |
390 | /* write out the command */ | |
a6df4894 CC |
391 | writew(config->main_function, samsung->sabi_iface + SABI_IFACE_MAIN); |
392 | writew(command, samsung->sabi_iface + SABI_IFACE_SUB); | |
393 | writeb(0, samsung->sabi_iface + SABI_IFACE_COMPLETE); | |
7e960711 CC |
394 | if (in) { |
395 | writel(in->d0, samsung->sabi_iface + SABI_IFACE_DATA); | |
396 | writel(in->d1, samsung->sabi_iface + SABI_IFACE_DATA + 4); | |
397 | writew(in->d2, samsung->sabi_iface + SABI_IFACE_DATA + 8); | |
398 | writeb(in->d3, samsung->sabi_iface + SABI_IFACE_DATA + 10); | |
399 | } | |
a6df4894 | 400 | outb(readb(samsung->sabi + config->header_offsets.iface_func), port); |
2d70b73a GKH |
401 | |
402 | /* write protect memory to make it safe */ | |
a6df4894 | 403 | outb(readb(samsung->sabi + config->header_offsets.re_mem), port); |
2d70b73a GKH |
404 | |
405 | /* see if the command actually succeeded */ | |
a6df4894 CC |
406 | complete = readb(samsung->sabi_iface + SABI_IFACE_COMPLETE); |
407 | iface_data = readb(samsung->sabi_iface + SABI_IFACE_DATA); | |
2e777187 CC |
408 | |
409 | /* iface_data = 0xFF happens when a command is not known | |
410 | * so we only add a warning in debug mode since we will | |
411 | * probably issue some unknown command at startup to find | |
412 | * out which features are supported */ | |
413 | if (complete != 0xaa || (iface_data == 0xff && debug)) | |
7e960711 CC |
414 | pr_warn("SABI command 0x%04x failed with" |
415 | " completion flag 0x%02x and interface data 0x%02x", | |
416 | command, complete, iface_data); | |
2e777187 CC |
417 | |
418 | if (complete != 0xaa || iface_data == 0xff) { | |
7e960711 | 419 | ret = -EINVAL; |
2d70b73a GKH |
420 | goto exit; |
421 | } | |
7e960711 CC |
422 | |
423 | if (out) { | |
424 | out->d0 = readl(samsung->sabi_iface + SABI_IFACE_DATA); | |
425 | out->d1 = readl(samsung->sabi_iface + SABI_IFACE_DATA + 4); | |
426 | out->d2 = readw(samsung->sabi_iface + SABI_IFACE_DATA + 2); | |
427 | out->d3 = readb(samsung->sabi_iface + SABI_IFACE_DATA + 1); | |
428 | } | |
429 | ||
430 | if (debug && out) { | |
2e777187 | 431 | pr_info("SABI return data:{0x%08x, 0x%08x, 0x%04x, 0x%02x}", |
7e960711 CC |
432 | out->d0, out->d1, out->d2, out->d3); |
433 | } | |
2d70b73a GKH |
434 | |
435 | exit: | |
a6df4894 | 436 | mutex_unlock(&samsung->sabi_mutex); |
7e960711 | 437 | return ret; |
2d70b73a GKH |
438 | } |
439 | ||
7e960711 CC |
440 | /* simple wrappers usable with most commands */ |
441 | static int sabi_set_commandb(struct samsung_laptop *samsung, | |
442 | u16 command, u8 data) | |
2d70b73a | 443 | { |
85229440 | 444 | struct sabi_data in = { { { .d0 = 0, .d1 = 0, .d2 = 0, .d3 = 0 } } }; |
2d70b73a | 445 | |
7e960711 CC |
446 | in.data[0] = data; |
447 | return sabi_command(samsung, command, &in, NULL); | |
2d70b73a GKH |
448 | } |
449 | ||
5dea7a20 | 450 | static int read_brightness(struct samsung_laptop *samsung) |
2d70b73a | 451 | { |
a6df4894 CC |
452 | const struct sabi_config *config = samsung->config; |
453 | const struct sabi_commands *commands = &samsung->config->commands; | |
7e960711 | 454 | struct sabi_data sretval; |
2d70b73a GKH |
455 | int user_brightness = 0; |
456 | int retval; | |
457 | ||
7e960711 CC |
458 | retval = sabi_command(samsung, commands->get_brightness, |
459 | NULL, &sretval); | |
460 | if (retval) | |
461 | return retval; | |
462 | ||
463 | user_brightness = sretval.data[0]; | |
464 | if (user_brightness > config->min_brightness) | |
465 | user_brightness -= config->min_brightness; | |
466 | else | |
467 | user_brightness = 0; | |
468 | ||
2d70b73a GKH |
469 | return user_brightness; |
470 | } | |
471 | ||
5dea7a20 | 472 | static void set_brightness(struct samsung_laptop *samsung, u8 user_brightness) |
2d70b73a | 473 | { |
a6df4894 CC |
474 | const struct sabi_config *config = samsung->config; |
475 | const struct sabi_commands *commands = &samsung->config->commands; | |
476 | u8 user_level = user_brightness + config->min_brightness; | |
2d70b73a | 477 | |
a6df4894 | 478 | if (samsung->has_stepping_quirk && user_level != 0) { |
ac080523 JS |
479 | /* |
480 | * short circuit if the specified level is what's already set | |
481 | * to prevent the screen from flickering needlessly | |
482 | */ | |
5dea7a20 | 483 | if (user_brightness == read_brightness(samsung)) |
ac080523 JS |
484 | return; |
485 | ||
7e960711 | 486 | sabi_set_commandb(samsung, commands->set_brightness, 0); |
ac080523 JS |
487 | } |
488 | ||
7e960711 | 489 | sabi_set_commandb(samsung, commands->set_brightness, user_level); |
2d70b73a GKH |
490 | } |
491 | ||
492 | static int get_brightness(struct backlight_device *bd) | |
493 | { | |
5dea7a20 CC |
494 | struct samsung_laptop *samsung = bl_get_data(bd); |
495 | ||
496 | return read_brightness(samsung); | |
2d70b73a GKH |
497 | } |
498 | ||
5dea7a20 | 499 | static void check_for_stepping_quirk(struct samsung_laptop *samsung) |
ac080523 | 500 | { |
5dea7a20 CC |
501 | int initial_level; |
502 | int check_level; | |
503 | int orig_level = read_brightness(samsung); | |
ac080523 JS |
504 | |
505 | /* | |
506 | * Some laptops exhibit the strange behaviour of stepping toward | |
507 | * (rather than setting) the brightness except when changing to/from | |
508 | * brightness level 0. This behaviour is checked for here and worked | |
509 | * around in set_brightness. | |
510 | */ | |
511 | ||
ba05b237 | 512 | if (orig_level == 0) |
5dea7a20 | 513 | set_brightness(samsung, 1); |
ba05b237 | 514 | |
5dea7a20 | 515 | initial_level = read_brightness(samsung); |
ba05b237 | 516 | |
ac080523 JS |
517 | if (initial_level <= 2) |
518 | check_level = initial_level + 2; | |
519 | else | |
520 | check_level = initial_level - 2; | |
521 | ||
a6df4894 | 522 | samsung->has_stepping_quirk = false; |
5dea7a20 | 523 | set_brightness(samsung, check_level); |
ac080523 | 524 | |
5dea7a20 | 525 | if (read_brightness(samsung) != check_level) { |
a6df4894 | 526 | samsung->has_stepping_quirk = true; |
ac080523 JS |
527 | pr_info("enabled workaround for brightness stepping quirk\n"); |
528 | } | |
529 | ||
5dea7a20 | 530 | set_brightness(samsung, orig_level); |
ac080523 JS |
531 | } |
532 | ||
2d70b73a GKH |
533 | static int update_status(struct backlight_device *bd) |
534 | { | |
5dea7a20 | 535 | struct samsung_laptop *samsung = bl_get_data(bd); |
a6df4894 CC |
536 | const struct sabi_commands *commands = &samsung->config->commands; |
537 | ||
5dea7a20 | 538 | set_brightness(samsung, bd->props.brightness); |
2d70b73a GKH |
539 | |
540 | if (bd->props.power == FB_BLANK_UNBLANK) | |
7e960711 | 541 | sabi_set_commandb(samsung, commands->set_backlight, 1); |
2d70b73a | 542 | else |
7e960711 | 543 | sabi_set_commandb(samsung, commands->set_backlight, 0); |
5dea7a20 | 544 | |
2d70b73a GKH |
545 | return 0; |
546 | } | |
547 | ||
548 | static const struct backlight_ops backlight_ops = { | |
549 | .get_brightness = get_brightness, | |
550 | .update_status = update_status, | |
551 | }; | |
552 | ||
84d482f2 | 553 | static int seclinux_rfkill_set(void *data, bool blocked) |
2d70b73a | 554 | { |
20db88e3 CC |
555 | struct samsung_rfkill *srfkill = data; |
556 | struct samsung_laptop *samsung = srfkill->samsung; | |
a6df4894 CC |
557 | const struct sabi_commands *commands = &samsung->config->commands; |
558 | ||
84d482f2 CC |
559 | return sabi_set_commandb(samsung, commands->set_wireless_button, |
560 | !blocked); | |
561 | } | |
562 | ||
563 | static struct rfkill_ops seclinux_rfkill_ops = { | |
564 | .set_block = seclinux_rfkill_set, | |
565 | }; | |
566 | ||
567 | static int swsmi_wireless_status(struct samsung_laptop *samsung, | |
568 | struct sabi_data *data) | |
569 | { | |
570 | const struct sabi_commands *commands = &samsung->config->commands; | |
571 | ||
572 | return sabi_command(samsung, commands->get_wireless_status, | |
573 | NULL, data); | |
574 | } | |
575 | ||
576 | static int swsmi_rfkill_set(void *priv, bool blocked) | |
577 | { | |
578 | struct samsung_rfkill *srfkill = priv; | |
579 | struct samsung_laptop *samsung = srfkill->samsung; | |
580 | const struct sabi_commands *commands = &samsung->config->commands; | |
581 | struct sabi_data data; | |
582 | int ret, i; | |
583 | ||
584 | ret = swsmi_wireless_status(samsung, &data); | |
585 | if (ret) | |
586 | return ret; | |
587 | ||
588 | /* Don't set the state for non-present devices */ | |
589 | for (i = 0; i < 4; i++) | |
590 | if (data.data[i] == 0x02) | |
591 | data.data[1] = 0; | |
592 | ||
593 | if (srfkill->type == RFKILL_TYPE_WLAN) | |
594 | data.data[WL_STATUS_WLAN] = !blocked; | |
595 | else if (srfkill->type == RFKILL_TYPE_BLUETOOTH) | |
596 | data.data[WL_STATUS_BT] = !blocked; | |
597 | ||
598 | return sabi_command(samsung, commands->set_wireless_status, | |
599 | &data, &data); | |
600 | } | |
601 | ||
602 | static void swsmi_rfkill_query(struct rfkill *rfkill, void *priv) | |
603 | { | |
604 | struct samsung_rfkill *srfkill = priv; | |
605 | struct samsung_laptop *samsung = srfkill->samsung; | |
606 | struct sabi_data data; | |
607 | int ret; | |
608 | ||
609 | ret = swsmi_wireless_status(samsung, &data); | |
610 | if (ret) | |
611 | return ; | |
612 | ||
613 | if (srfkill->type == RFKILL_TYPE_WLAN) | |
614 | ret = data.data[WL_STATUS_WLAN]; | |
615 | else if (srfkill->type == RFKILL_TYPE_BLUETOOTH) | |
616 | ret = data.data[WL_STATUS_BT]; | |
2d70b73a | 617 | else |
84d482f2 | 618 | return ; |
2d70b73a | 619 | |
84d482f2 | 620 | rfkill_set_sw_state(rfkill, !ret); |
2d70b73a GKH |
621 | } |
622 | ||
84d482f2 CC |
623 | static struct rfkill_ops swsmi_rfkill_ops = { |
624 | .set_block = swsmi_rfkill_set, | |
625 | .query = swsmi_rfkill_query, | |
2d70b73a GKH |
626 | }; |
627 | ||
2d70b73a GKH |
628 | static ssize_t get_performance_level(struct device *dev, |
629 | struct device_attribute *attr, char *buf) | |
630 | { | |
5dea7a20 | 631 | struct samsung_laptop *samsung = dev_get_drvdata(dev); |
a6df4894 | 632 | const struct sabi_config *config = samsung->config; |
5dea7a20 | 633 | const struct sabi_commands *commands = &config->commands; |
7e960711 | 634 | struct sabi_data sretval; |
2d70b73a GKH |
635 | int retval; |
636 | int i; | |
637 | ||
638 | /* Read the state */ | |
7e960711 CC |
639 | retval = sabi_command(samsung, commands->get_performance_level, |
640 | NULL, &sretval); | |
2d70b73a GKH |
641 | if (retval) |
642 | return retval; | |
643 | ||
644 | /* The logic is backwards, yeah, lots of fun... */ | |
a6df4894 | 645 | for (i = 0; config->performance_levels[i].name; ++i) { |
7e960711 | 646 | if (sretval.data[0] == config->performance_levels[i].value) |
a6df4894 | 647 | return sprintf(buf, "%s\n", config->performance_levels[i].name); |
2d70b73a GKH |
648 | } |
649 | return sprintf(buf, "%s\n", "unknown"); | |
650 | } | |
651 | ||
652 | static ssize_t set_performance_level(struct device *dev, | |
653 | struct device_attribute *attr, const char *buf, | |
654 | size_t count) | |
655 | { | |
5dea7a20 | 656 | struct samsung_laptop *samsung = dev_get_drvdata(dev); |
a6df4894 | 657 | const struct sabi_config *config = samsung->config; |
5dea7a20 CC |
658 | const struct sabi_commands *commands = &config->commands; |
659 | int i; | |
a6df4894 | 660 | |
5dea7a20 CC |
661 | if (count < 1) |
662 | return count; | |
663 | ||
664 | for (i = 0; config->performance_levels[i].name; ++i) { | |
665 | const struct sabi_performance_level *level = | |
666 | &config->performance_levels[i]; | |
667 | if (!strncasecmp(level->name, buf, strlen(level->name))) { | |
7e960711 CC |
668 | sabi_set_commandb(samsung, |
669 | commands->set_performance_level, | |
670 | level->value); | |
5dea7a20 | 671 | break; |
2d70b73a | 672 | } |
2d70b73a | 673 | } |
5dea7a20 CC |
674 | |
675 | if (!config->performance_levels[i].name) | |
676 | return -EINVAL; | |
677 | ||
2d70b73a GKH |
678 | return count; |
679 | } | |
5dea7a20 | 680 | |
2d70b73a GKH |
681 | static DEVICE_ATTR(performance_level, S_IWUSR | S_IRUGO, |
682 | get_performance_level, set_performance_level); | |
683 | ||
cb5b5c91 CC |
684 | static int read_battery_life_extender(struct samsung_laptop *samsung) |
685 | { | |
686 | const struct sabi_commands *commands = &samsung->config->commands; | |
687 | struct sabi_data data; | |
688 | int retval; | |
689 | ||
690 | if (commands->get_battery_life_extender == 0xFFFF) | |
691 | return -ENODEV; | |
692 | ||
693 | memset(&data, 0, sizeof(data)); | |
694 | data.data[0] = 0x80; | |
695 | retval = sabi_command(samsung, commands->get_battery_life_extender, | |
696 | &data, &data); | |
697 | ||
698 | if (retval) | |
699 | return retval; | |
700 | ||
701 | if (data.data[0] != 0 && data.data[0] != 1) | |
702 | return -ENODEV; | |
703 | ||
704 | return data.data[0]; | |
705 | } | |
706 | ||
707 | static int write_battery_life_extender(struct samsung_laptop *samsung, | |
708 | int enabled) | |
709 | { | |
710 | const struct sabi_commands *commands = &samsung->config->commands; | |
711 | struct sabi_data data; | |
712 | ||
713 | memset(&data, 0, sizeof(data)); | |
714 | data.data[0] = 0x80 | enabled; | |
715 | return sabi_command(samsung, commands->set_battery_life_extender, | |
716 | &data, NULL); | |
717 | } | |
718 | ||
719 | static ssize_t get_battery_life_extender(struct device *dev, | |
720 | struct device_attribute *attr, | |
721 | char *buf) | |
722 | { | |
723 | struct samsung_laptop *samsung = dev_get_drvdata(dev); | |
724 | int ret; | |
725 | ||
726 | ret = read_battery_life_extender(samsung); | |
727 | if (ret < 0) | |
728 | return ret; | |
729 | ||
730 | return sprintf(buf, "%d\n", ret); | |
731 | } | |
732 | ||
733 | static ssize_t set_battery_life_extender(struct device *dev, | |
734 | struct device_attribute *attr, | |
735 | const char *buf, size_t count) | |
736 | { | |
737 | struct samsung_laptop *samsung = dev_get_drvdata(dev); | |
738 | int ret, value; | |
739 | ||
740 | if (!count || sscanf(buf, "%i", &value) != 1) | |
741 | return -EINVAL; | |
742 | ||
743 | ret = write_battery_life_extender(samsung, !!value); | |
744 | if (ret < 0) | |
745 | return ret; | |
746 | ||
747 | return count; | |
748 | } | |
749 | ||
750 | static DEVICE_ATTR(battery_life_extender, S_IWUSR | S_IRUGO, | |
751 | get_battery_life_extender, set_battery_life_extender); | |
752 | ||
3a75d378 CC |
753 | static int read_usb_charge(struct samsung_laptop *samsung) |
754 | { | |
755 | const struct sabi_commands *commands = &samsung->config->commands; | |
756 | struct sabi_data data; | |
757 | int retval; | |
758 | ||
759 | if (commands->get_usb_charge == 0xFFFF) | |
760 | return -ENODEV; | |
761 | ||
762 | memset(&data, 0, sizeof(data)); | |
763 | data.data[0] = 0x80; | |
764 | retval = sabi_command(samsung, commands->get_usb_charge, | |
765 | &data, &data); | |
766 | ||
767 | if (retval) | |
768 | return retval; | |
769 | ||
770 | if (data.data[0] != 0 && data.data[0] != 1) | |
771 | return -ENODEV; | |
772 | ||
773 | return data.data[0]; | |
774 | } | |
775 | ||
776 | static int write_usb_charge(struct samsung_laptop *samsung, | |
777 | int enabled) | |
778 | { | |
779 | const struct sabi_commands *commands = &samsung->config->commands; | |
780 | struct sabi_data data; | |
781 | ||
782 | memset(&data, 0, sizeof(data)); | |
783 | data.data[0] = 0x80 | enabled; | |
784 | return sabi_command(samsung, commands->set_usb_charge, | |
785 | &data, NULL); | |
786 | } | |
787 | ||
788 | static ssize_t get_usb_charge(struct device *dev, | |
789 | struct device_attribute *attr, | |
790 | char *buf) | |
791 | { | |
792 | struct samsung_laptop *samsung = dev_get_drvdata(dev); | |
793 | int ret; | |
794 | ||
795 | ret = read_usb_charge(samsung); | |
796 | if (ret < 0) | |
797 | return ret; | |
798 | ||
799 | return sprintf(buf, "%d\n", ret); | |
800 | } | |
801 | ||
802 | static ssize_t set_usb_charge(struct device *dev, | |
803 | struct device_attribute *attr, | |
804 | const char *buf, size_t count) | |
805 | { | |
806 | struct samsung_laptop *samsung = dev_get_drvdata(dev); | |
807 | int ret, value; | |
808 | ||
809 | if (!count || sscanf(buf, "%i", &value) != 1) | |
810 | return -EINVAL; | |
811 | ||
812 | ret = write_usb_charge(samsung, !!value); | |
813 | if (ret < 0) | |
814 | return ret; | |
815 | ||
816 | return count; | |
817 | } | |
818 | ||
819 | static DEVICE_ATTR(usb_charge, S_IWUSR | S_IRUGO, | |
820 | get_usb_charge, set_usb_charge); | |
821 | ||
a66c1662 CC |
822 | static struct attribute *platform_attributes[] = { |
823 | &dev_attr_performance_level.attr, | |
cb5b5c91 | 824 | &dev_attr_battery_life_extender.attr, |
3a75d378 | 825 | &dev_attr_usb_charge.attr, |
a66c1662 CC |
826 | NULL |
827 | }; | |
2d70b73a | 828 | |
5dea7a20 CC |
829 | static int find_signature(void __iomem *memcheck, const char *testStr) |
830 | { | |
831 | int i = 0; | |
832 | int loca; | |
833 | ||
834 | for (loca = 0; loca < 0xffff; loca++) { | |
835 | char temp = readb(memcheck + loca); | |
836 | ||
837 | if (temp == testStr[i]) { | |
838 | if (i == strlen(testStr)-1) | |
839 | break; | |
840 | ++i; | |
841 | } else { | |
842 | i = 0; | |
843 | } | |
844 | } | |
845 | return loca; | |
846 | } | |
847 | ||
848 | static void samsung_rfkill_exit(struct samsung_laptop *samsung) | |
849 | { | |
84d482f2 CC |
850 | if (samsung->wlan.rfkill) { |
851 | rfkill_unregister(samsung->wlan.rfkill); | |
852 | rfkill_destroy(samsung->wlan.rfkill); | |
853 | samsung->wlan.rfkill = NULL; | |
854 | } | |
855 | if (samsung->bluetooth.rfkill) { | |
856 | rfkill_unregister(samsung->bluetooth.rfkill); | |
857 | rfkill_destroy(samsung->bluetooth.rfkill); | |
858 | samsung->bluetooth.rfkill = NULL; | |
5dea7a20 CC |
859 | } |
860 | } | |
861 | ||
84d482f2 CC |
862 | static int samsung_new_rfkill(struct samsung_laptop *samsung, |
863 | struct samsung_rfkill *arfkill, | |
864 | const char *name, enum rfkill_type type, | |
865 | const struct rfkill_ops *ops, | |
866 | int blocked) | |
5dea7a20 | 867 | { |
84d482f2 CC |
868 | struct rfkill **rfkill = &arfkill->rfkill; |
869 | int ret; | |
5dea7a20 | 870 | |
84d482f2 CC |
871 | arfkill->type = type; |
872 | arfkill->samsung = samsung; | |
873 | ||
874 | *rfkill = rfkill_alloc(name, &samsung->platform_device->dev, | |
875 | type, ops, arfkill); | |
876 | ||
877 | if (!*rfkill) | |
878 | return -EINVAL; | |
879 | ||
880 | if (blocked != -1) | |
881 | rfkill_init_sw_state(*rfkill, blocked); | |
882 | ||
883 | ret = rfkill_register(*rfkill); | |
884 | if (ret) { | |
885 | rfkill_destroy(*rfkill); | |
886 | *rfkill = NULL; | |
887 | return ret; | |
5dea7a20 | 888 | } |
84d482f2 CC |
889 | return 0; |
890 | } | |
5dea7a20 | 891 | |
84d482f2 CC |
892 | static int __init samsung_rfkill_init_seclinux(struct samsung_laptop *samsung) |
893 | { | |
894 | return samsung_new_rfkill(samsung, &samsung->wlan, "samsung-wlan", | |
895 | RFKILL_TYPE_WLAN, &seclinux_rfkill_ops, -1); | |
896 | } | |
897 | ||
898 | static int __init samsung_rfkill_init_swsmi(struct samsung_laptop *samsung) | |
899 | { | |
900 | struct sabi_data data; | |
901 | int ret; | |
902 | ||
903 | ret = swsmi_wireless_status(samsung, &data); | |
20db88e3 CC |
904 | if (ret) { |
905 | /* Some swsmi laptops use the old seclinux way to control | |
906 | * wireless devices */ | |
907 | if (ret == -EINVAL) | |
908 | ret = samsung_rfkill_init_seclinux(samsung); | |
84d482f2 | 909 | return ret; |
20db88e3 | 910 | } |
84d482f2 CC |
911 | |
912 | /* 0x02 seems to mean that the device is no present/available */ | |
913 | ||
914 | if (data.data[WL_STATUS_WLAN] != 0x02) | |
915 | ret = samsung_new_rfkill(samsung, &samsung->wlan, | |
916 | "samsung-wlan", | |
917 | RFKILL_TYPE_WLAN, | |
918 | &swsmi_rfkill_ops, | |
919 | !data.data[WL_STATUS_WLAN]); | |
920 | if (ret) | |
921 | goto exit; | |
922 | ||
923 | if (data.data[WL_STATUS_BT] != 0x02) | |
924 | ret = samsung_new_rfkill(samsung, &samsung->bluetooth, | |
925 | "samsung-bluetooth", | |
926 | RFKILL_TYPE_BLUETOOTH, | |
927 | &swsmi_rfkill_ops, | |
928 | !data.data[WL_STATUS_BT]); | |
929 | if (ret) | |
930 | goto exit; | |
931 | ||
932 | exit: | |
933 | if (ret) | |
934 | samsung_rfkill_exit(samsung); | |
935 | ||
936 | return ret; | |
937 | } | |
938 | ||
939 | static int __init samsung_rfkill_init(struct samsung_laptop *samsung) | |
940 | { | |
941 | if (samsung->config->sabi_version == 2) | |
942 | return samsung_rfkill_init_seclinux(samsung); | |
943 | if (samsung->config->sabi_version == 3) | |
944 | return samsung_rfkill_init_swsmi(samsung); | |
5dea7a20 CC |
945 | return 0; |
946 | } | |
947 | ||
f674ebf1 CC |
948 | static int kbd_backlight_enable(struct samsung_laptop *samsung) |
949 | { | |
950 | const struct sabi_commands *commands = &samsung->config->commands; | |
951 | struct sabi_data data; | |
952 | int retval; | |
953 | ||
954 | if (commands->kbd_backlight == 0xFFFF) | |
955 | return -ENODEV; | |
956 | ||
957 | memset(&data, 0, sizeof(data)); | |
958 | data.d0 = 0xaabb; | |
959 | retval = sabi_command(samsung, commands->kbd_backlight, | |
960 | &data, &data); | |
961 | ||
962 | if (retval) | |
963 | return retval; | |
964 | ||
965 | if (data.d0 != 0xccdd) | |
966 | return -ENODEV; | |
967 | return 0; | |
968 | } | |
969 | ||
970 | static int kbd_backlight_read(struct samsung_laptop *samsung) | |
971 | { | |
972 | const struct sabi_commands *commands = &samsung->config->commands; | |
973 | struct sabi_data data; | |
974 | int retval; | |
975 | ||
976 | memset(&data, 0, sizeof(data)); | |
977 | data.data[0] = 0x81; | |
978 | retval = sabi_command(samsung, commands->kbd_backlight, | |
979 | &data, &data); | |
980 | ||
981 | if (retval) | |
982 | return retval; | |
983 | ||
984 | return data.data[0]; | |
985 | } | |
986 | ||
987 | static int kbd_backlight_write(struct samsung_laptop *samsung, int brightness) | |
988 | { | |
989 | const struct sabi_commands *commands = &samsung->config->commands; | |
990 | struct sabi_data data; | |
991 | ||
992 | memset(&data, 0, sizeof(data)); | |
993 | data.d0 = 0x82 | ((brightness & 0xFF) << 8); | |
994 | return sabi_command(samsung, commands->kbd_backlight, | |
995 | &data, NULL); | |
996 | } | |
997 | ||
998 | static void kbd_led_update(struct work_struct *work) | |
999 | { | |
1000 | struct samsung_laptop *samsung; | |
1001 | ||
1002 | samsung = container_of(work, struct samsung_laptop, kbd_led_work); | |
1003 | kbd_backlight_write(samsung, samsung->kbd_led_wk); | |
1004 | } | |
1005 | ||
1006 | static void kbd_led_set(struct led_classdev *led_cdev, | |
1007 | enum led_brightness value) | |
1008 | { | |
1009 | struct samsung_laptop *samsung; | |
1010 | ||
1011 | samsung = container_of(led_cdev, struct samsung_laptop, kbd_led); | |
1012 | ||
1013 | if (value > samsung->kbd_led.max_brightness) | |
1014 | value = samsung->kbd_led.max_brightness; | |
1015 | else if (value < 0) | |
1016 | value = 0; | |
1017 | ||
1018 | samsung->kbd_led_wk = value; | |
1019 | queue_work(samsung->led_workqueue, &samsung->kbd_led_work); | |
1020 | } | |
1021 | ||
1022 | static enum led_brightness kbd_led_get(struct led_classdev *led_cdev) | |
1023 | { | |
1024 | struct samsung_laptop *samsung; | |
1025 | ||
1026 | samsung = container_of(led_cdev, struct samsung_laptop, kbd_led); | |
1027 | return kbd_backlight_read(samsung); | |
1028 | } | |
1029 | ||
1030 | static void samsung_leds_exit(struct samsung_laptop *samsung) | |
1031 | { | |
1032 | if (!IS_ERR_OR_NULL(samsung->kbd_led.dev)) | |
1033 | led_classdev_unregister(&samsung->kbd_led); | |
1034 | if (samsung->led_workqueue) | |
1035 | destroy_workqueue(samsung->led_workqueue); | |
1036 | } | |
1037 | ||
1038 | static int __init samsung_leds_init(struct samsung_laptop *samsung) | |
1039 | { | |
1040 | int ret = 0; | |
1041 | ||
1042 | samsung->led_workqueue = create_singlethread_workqueue("led_workqueue"); | |
1043 | if (!samsung->led_workqueue) | |
1044 | return -ENOMEM; | |
1045 | ||
1046 | if (kbd_backlight_enable(samsung) >= 0) { | |
1047 | INIT_WORK(&samsung->kbd_led_work, kbd_led_update); | |
1048 | ||
1049 | samsung->kbd_led.name = "samsung::kbd_backlight"; | |
1050 | samsung->kbd_led.brightness_set = kbd_led_set; | |
1051 | samsung->kbd_led.brightness_get = kbd_led_get; | |
1052 | samsung->kbd_led.max_brightness = 8; | |
1053 | ||
1054 | ret = led_classdev_register(&samsung->platform_device->dev, | |
1055 | &samsung->kbd_led); | |
1056 | } | |
1057 | ||
1058 | if (ret) | |
1059 | samsung_leds_exit(samsung); | |
1060 | ||
1061 | return ret; | |
1062 | } | |
1063 | ||
5dea7a20 CC |
1064 | static void samsung_backlight_exit(struct samsung_laptop *samsung) |
1065 | { | |
1066 | if (samsung->backlight_device) { | |
1067 | backlight_device_unregister(samsung->backlight_device); | |
1068 | samsung->backlight_device = NULL; | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | static int __init samsung_backlight_init(struct samsung_laptop *samsung) | |
1073 | { | |
1074 | struct backlight_device *bd; | |
1075 | struct backlight_properties props; | |
1076 | ||
f34cd9ca CC |
1077 | if (!samsung->handle_backlight) |
1078 | return 0; | |
1079 | ||
5dea7a20 CC |
1080 | memset(&props, 0, sizeof(struct backlight_properties)); |
1081 | props.type = BACKLIGHT_PLATFORM; | |
1082 | props.max_brightness = samsung->config->max_brightness - | |
1083 | samsung->config->min_brightness; | |
1084 | ||
1085 | bd = backlight_device_register("samsung", | |
1086 | &samsung->platform_device->dev, | |
1087 | samsung, &backlight_ops, | |
1088 | &props); | |
1089 | if (IS_ERR(bd)) | |
1090 | return PTR_ERR(bd); | |
1091 | ||
1092 | samsung->backlight_device = bd; | |
1093 | samsung->backlight_device->props.brightness = read_brightness(samsung); | |
1094 | samsung->backlight_device->props.power = FB_BLANK_UNBLANK; | |
1095 | backlight_update_status(samsung->backlight_device); | |
1096 | ||
1097 | return 0; | |
1098 | } | |
1099 | ||
bde9e509 | 1100 | static umode_t samsung_sysfs_is_visible(struct kobject *kobj, |
a66c1662 CC |
1101 | struct attribute *attr, int idx) |
1102 | { | |
1103 | struct device *dev = container_of(kobj, struct device, kobj); | |
1104 | struct platform_device *pdev = to_platform_device(dev); | |
1105 | struct samsung_laptop *samsung = platform_get_drvdata(pdev); | |
1106 | bool ok = true; | |
1107 | ||
1108 | if (attr == &dev_attr_performance_level.attr) | |
1109 | ok = !!samsung->config->performance_levels[0].name; | |
cb5b5c91 CC |
1110 | if (attr == &dev_attr_battery_life_extender.attr) |
1111 | ok = !!(read_battery_life_extender(samsung) >= 0); | |
3a75d378 CC |
1112 | if (attr == &dev_attr_usb_charge.attr) |
1113 | ok = !!(read_usb_charge(samsung) >= 0); | |
a66c1662 CC |
1114 | |
1115 | return ok ? attr->mode : 0; | |
1116 | } | |
1117 | ||
1118 | static struct attribute_group platform_attribute_group = { | |
1119 | .is_visible = samsung_sysfs_is_visible, | |
1120 | .attrs = platform_attributes | |
1121 | }; | |
1122 | ||
5dea7a20 CC |
1123 | static void samsung_sysfs_exit(struct samsung_laptop *samsung) |
1124 | { | |
a66c1662 CC |
1125 | struct platform_device *device = samsung->platform_device; |
1126 | ||
1127 | sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); | |
5dea7a20 CC |
1128 | } |
1129 | ||
1130 | static int __init samsung_sysfs_init(struct samsung_laptop *samsung) | |
1131 | { | |
a66c1662 CC |
1132 | struct platform_device *device = samsung->platform_device; |
1133 | ||
1134 | return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); | |
1135 | ||
5dea7a20 CC |
1136 | } |
1137 | ||
5b80fc40 CC |
1138 | static int show_call(struct seq_file *m, void *data) |
1139 | { | |
1140 | struct samsung_laptop *samsung = m->private; | |
1141 | struct sabi_data *sdata = &samsung->debug.data; | |
1142 | int ret; | |
1143 | ||
1144 | seq_printf(m, "SABI 0x%04x {0x%08x, 0x%08x, 0x%04x, 0x%02x}\n", | |
1145 | samsung->debug.command, | |
1146 | sdata->d0, sdata->d1, sdata->d2, sdata->d3); | |
1147 | ||
1148 | ret = sabi_command(samsung, samsung->debug.command, sdata, sdata); | |
1149 | ||
1150 | if (ret) { | |
1151 | seq_printf(m, "SABI command 0x%04x failed\n", | |
1152 | samsung->debug.command); | |
1153 | return ret; | |
1154 | } | |
1155 | ||
1156 | seq_printf(m, "SABI {0x%08x, 0x%08x, 0x%04x, 0x%02x}\n", | |
1157 | sdata->d0, sdata->d1, sdata->d2, sdata->d3); | |
1158 | return 0; | |
1159 | } | |
1160 | ||
1161 | static int samsung_debugfs_open(struct inode *inode, struct file *file) | |
1162 | { | |
1163 | return single_open(file, show_call, inode->i_private); | |
1164 | } | |
1165 | ||
1166 | static const struct file_operations samsung_laptop_call_io_ops = { | |
1167 | .owner = THIS_MODULE, | |
1168 | .open = samsung_debugfs_open, | |
1169 | .read = seq_read, | |
1170 | .llseek = seq_lseek, | |
1171 | .release = single_release, | |
1172 | }; | |
1173 | ||
1174 | static void samsung_debugfs_exit(struct samsung_laptop *samsung) | |
1175 | { | |
1176 | debugfs_remove_recursive(samsung->debug.root); | |
1177 | } | |
1178 | ||
1179 | static int samsung_debugfs_init(struct samsung_laptop *samsung) | |
1180 | { | |
1181 | struct dentry *dent; | |
1182 | ||
1183 | samsung->debug.root = debugfs_create_dir("samsung-laptop", NULL); | |
1184 | if (!samsung->debug.root) { | |
1185 | pr_err("failed to create debugfs directory"); | |
1186 | goto error_debugfs; | |
1187 | } | |
1188 | ||
1189 | samsung->debug.f0000_wrapper.data = samsung->f0000_segment; | |
1190 | samsung->debug.f0000_wrapper.size = 0xffff; | |
1191 | ||
1192 | samsung->debug.data_wrapper.data = &samsung->debug.data; | |
1193 | samsung->debug.data_wrapper.size = sizeof(samsung->debug.data); | |
1194 | ||
6f6ae06e CC |
1195 | samsung->debug.sdiag_wrapper.data = samsung->sdiag; |
1196 | samsung->debug.sdiag_wrapper.size = strlen(samsung->sdiag); | |
1197 | ||
5b80fc40 CC |
1198 | dent = debugfs_create_u16("command", S_IRUGO | S_IWUSR, |
1199 | samsung->debug.root, &samsung->debug.command); | |
1200 | if (!dent) | |
1201 | goto error_debugfs; | |
1202 | ||
1203 | dent = debugfs_create_u32("d0", S_IRUGO | S_IWUSR, samsung->debug.root, | |
1204 | &samsung->debug.data.d0); | |
1205 | if (!dent) | |
1206 | goto error_debugfs; | |
1207 | ||
1208 | dent = debugfs_create_u32("d1", S_IRUGO | S_IWUSR, samsung->debug.root, | |
1209 | &samsung->debug.data.d1); | |
1210 | if (!dent) | |
1211 | goto error_debugfs; | |
1212 | ||
1213 | dent = debugfs_create_u16("d2", S_IRUGO | S_IWUSR, samsung->debug.root, | |
1214 | &samsung->debug.data.d2); | |
1215 | if (!dent) | |
1216 | goto error_debugfs; | |
1217 | ||
1218 | dent = debugfs_create_u8("d3", S_IRUGO | S_IWUSR, samsung->debug.root, | |
1219 | &samsung->debug.data.d3); | |
1220 | if (!dent) | |
1221 | goto error_debugfs; | |
1222 | ||
1223 | dent = debugfs_create_blob("data", S_IRUGO | S_IWUSR, | |
1224 | samsung->debug.root, | |
1225 | &samsung->debug.data_wrapper); | |
1226 | if (!dent) | |
1227 | goto error_debugfs; | |
1228 | ||
1229 | dent = debugfs_create_blob("f0000_segment", S_IRUSR | S_IWUSR, | |
1230 | samsung->debug.root, | |
1231 | &samsung->debug.f0000_wrapper); | |
1232 | if (!dent) | |
1233 | goto error_debugfs; | |
1234 | ||
1235 | dent = debugfs_create_file("call", S_IFREG | S_IRUGO, | |
1236 | samsung->debug.root, samsung, | |
1237 | &samsung_laptop_call_io_ops); | |
1238 | if (!dent) | |
1239 | goto error_debugfs; | |
1240 | ||
6f6ae06e CC |
1241 | dent = debugfs_create_blob("sdiag", S_IRUGO | S_IWUSR, |
1242 | samsung->debug.root, | |
1243 | &samsung->debug.sdiag_wrapper); | |
1244 | if (!dent) | |
1245 | goto error_debugfs; | |
1246 | ||
5b80fc40 CC |
1247 | return 0; |
1248 | ||
1249 | error_debugfs: | |
1250 | samsung_debugfs_exit(samsung); | |
1251 | return -ENOMEM; | |
1252 | } | |
1253 | ||
5dea7a20 CC |
1254 | static void samsung_sabi_exit(struct samsung_laptop *samsung) |
1255 | { | |
1256 | const struct sabi_config *config = samsung->config; | |
1257 | ||
1258 | /* Turn off "Linux" mode in the BIOS */ | |
1259 | if (config && config->commands.set_linux != 0xff) | |
7e960711 | 1260 | sabi_set_commandb(samsung, config->commands.set_linux, 0x80); |
5dea7a20 CC |
1261 | |
1262 | if (samsung->sabi_iface) { | |
1263 | iounmap(samsung->sabi_iface); | |
1264 | samsung->sabi_iface = NULL; | |
1265 | } | |
1266 | if (samsung->f0000_segment) { | |
1267 | iounmap(samsung->f0000_segment); | |
1268 | samsung->f0000_segment = NULL; | |
1269 | } | |
1270 | ||
1271 | samsung->config = NULL; | |
1272 | } | |
1273 | ||
49dd7730 CC |
1274 | static __init void samsung_sabi_infos(struct samsung_laptop *samsung, int loca, |
1275 | unsigned int ifaceP) | |
5dea7a20 CC |
1276 | { |
1277 | const struct sabi_config *config = samsung->config; | |
1278 | ||
1279 | printk(KERN_DEBUG "This computer supports SABI==%x\n", | |
1280 | loca + 0xf0000 - 6); | |
49dd7730 | 1281 | |
5dea7a20 CC |
1282 | printk(KERN_DEBUG "SABI header:\n"); |
1283 | printk(KERN_DEBUG " SMI Port Number = 0x%04x\n", | |
1284 | readw(samsung->sabi + config->header_offsets.port)); | |
1285 | printk(KERN_DEBUG " SMI Interface Function = 0x%02x\n", | |
1286 | readb(samsung->sabi + config->header_offsets.iface_func)); | |
1287 | printk(KERN_DEBUG " SMI enable memory buffer = 0x%02x\n", | |
1288 | readb(samsung->sabi + config->header_offsets.en_mem)); | |
1289 | printk(KERN_DEBUG " SMI restore memory buffer = 0x%02x\n", | |
1290 | readb(samsung->sabi + config->header_offsets.re_mem)); | |
1291 | printk(KERN_DEBUG " SABI data offset = 0x%04x\n", | |
1292 | readw(samsung->sabi + config->header_offsets.data_offset)); | |
1293 | printk(KERN_DEBUG " SABI data segment = 0x%04x\n", | |
1294 | readw(samsung->sabi + config->header_offsets.data_segment)); | |
5dea7a20 | 1295 | |
49dd7730 | 1296 | printk(KERN_DEBUG " SABI pointer = 0x%08x\n", ifaceP); |
5dea7a20 CC |
1297 | } |
1298 | ||
6f6ae06e CC |
1299 | static void __init samsung_sabi_diag(struct samsung_laptop *samsung) |
1300 | { | |
1301 | int loca = find_signature(samsung->f0000_segment, "SDiaG@"); | |
1302 | int i; | |
1303 | ||
1304 | if (loca == 0xffff) | |
1305 | return ; | |
1306 | ||
1307 | /* Example: | |
1308 | * Ident: @SDiaG@686XX-N90X3A/966-SEC-07HL-S90X3A | |
1309 | * | |
1310 | * Product name: 90X3A | |
1311 | * BIOS Version: 07HL | |
1312 | */ | |
1313 | loca += 1; | |
1314 | for (i = 0; loca < 0xffff && i < sizeof(samsung->sdiag) - 1; loca++) { | |
1315 | char temp = readb(samsung->f0000_segment + loca); | |
1316 | ||
1317 | if (isalnum(temp) || temp == '/' || temp == '-') | |
1318 | samsung->sdiag[i++] = temp; | |
1319 | else | |
1320 | break ; | |
1321 | } | |
1322 | ||
1323 | if (debug && samsung->sdiag[0]) | |
1324 | pr_info("sdiag: %s", samsung->sdiag); | |
1325 | } | |
1326 | ||
5dea7a20 CC |
1327 | static int __init samsung_sabi_init(struct samsung_laptop *samsung) |
1328 | { | |
1329 | const struct sabi_config *config = NULL; | |
1330 | const struct sabi_commands *commands; | |
1331 | unsigned int ifaceP; | |
1332 | int ret = 0; | |
1333 | int i; | |
1334 | int loca; | |
1335 | ||
1336 | samsung->f0000_segment = ioremap_nocache(0xf0000, 0xffff); | |
1337 | if (!samsung->f0000_segment) { | |
3be324a9 CC |
1338 | if (debug || force) |
1339 | pr_err("Can't map the segment at 0xf0000\n"); | |
5dea7a20 CC |
1340 | ret = -EINVAL; |
1341 | goto exit; | |
1342 | } | |
1343 | ||
6f6ae06e CC |
1344 | samsung_sabi_diag(samsung); |
1345 | ||
5dea7a20 CC |
1346 | /* Try to find one of the signatures in memory to find the header */ |
1347 | for (i = 0; sabi_configs[i].test_string != 0; ++i) { | |
1348 | samsung->config = &sabi_configs[i]; | |
1349 | loca = find_signature(samsung->f0000_segment, | |
1350 | samsung->config->test_string); | |
1351 | if (loca != 0xffff) | |
1352 | break; | |
1353 | } | |
1354 | ||
1355 | if (loca == 0xffff) { | |
3be324a9 CC |
1356 | if (debug || force) |
1357 | pr_err("This computer does not support SABI\n"); | |
5dea7a20 CC |
1358 | ret = -ENODEV; |
1359 | goto exit; | |
1360 | } | |
1361 | ||
1362 | config = samsung->config; | |
1363 | commands = &config->commands; | |
1364 | ||
1365 | /* point to the SMI port Number */ | |
1366 | loca += 1; | |
1367 | samsung->sabi = (samsung->f0000_segment + loca); | |
1368 | ||
5dea7a20 CC |
1369 | /* Get a pointer to the SABI Interface */ |
1370 | ifaceP = (readw(samsung->sabi + config->header_offsets.data_segment) & 0x0ffff) << 4; | |
1371 | ifaceP += readw(samsung->sabi + config->header_offsets.data_offset) & 0x0ffff; | |
49dd7730 CC |
1372 | |
1373 | if (debug) | |
1374 | samsung_sabi_infos(samsung, loca, ifaceP); | |
1375 | ||
5dea7a20 CC |
1376 | samsung->sabi_iface = ioremap_nocache(ifaceP, 16); |
1377 | if (!samsung->sabi_iface) { | |
1378 | pr_err("Can't remap %x\n", ifaceP); | |
1379 | ret = -EINVAL; | |
1380 | goto exit; | |
1381 | } | |
1382 | ||
5dea7a20 CC |
1383 | /* Turn on "Linux" mode in the BIOS */ |
1384 | if (commands->set_linux != 0xff) { | |
7e960711 CC |
1385 | int retval = sabi_set_commandb(samsung, |
1386 | commands->set_linux, 0x81); | |
5dea7a20 CC |
1387 | if (retval) { |
1388 | pr_warn("Linux mode was not set!\n"); | |
1389 | ret = -ENODEV; | |
1390 | goto exit; | |
1391 | } | |
1392 | } | |
1393 | ||
1394 | /* Check for stepping quirk */ | |
f34cd9ca CC |
1395 | if (samsung->handle_backlight) |
1396 | check_for_stepping_quirk(samsung); | |
5dea7a20 | 1397 | |
2e777187 CC |
1398 | pr_info("detected SABI interface: %s\n", |
1399 | samsung->config->test_string); | |
1400 | ||
5dea7a20 CC |
1401 | exit: |
1402 | if (ret) | |
1403 | samsung_sabi_exit(samsung); | |
1404 | ||
1405 | return ret; | |
1406 | } | |
1407 | ||
1408 | static void samsung_platform_exit(struct samsung_laptop *samsung) | |
1409 | { | |
1410 | if (samsung->platform_device) { | |
1411 | platform_device_unregister(samsung->platform_device); | |
1412 | samsung->platform_device = NULL; | |
1413 | } | |
1414 | } | |
1415 | ||
1416 | static int __init samsung_platform_init(struct samsung_laptop *samsung) | |
1417 | { | |
1418 | struct platform_device *pdev; | |
1419 | ||
1420 | pdev = platform_device_register_simple("samsung", -1, NULL, 0); | |
1421 | if (IS_ERR(pdev)) | |
1422 | return PTR_ERR(pdev); | |
1423 | ||
1424 | samsung->platform_device = pdev; | |
1425 | platform_set_drvdata(samsung->platform_device, samsung); | |
1426 | return 0; | |
1427 | } | |
1428 | ||
a979e2e2 CC |
1429 | static struct samsung_quirks *quirks; |
1430 | ||
1431 | static int __init samsung_dmi_matched(const struct dmi_system_id *d) | |
1432 | { | |
1433 | quirks = d->driver_data; | |
1434 | return 0; | |
1435 | } | |
1436 | ||
2d70b73a GKH |
1437 | static struct dmi_system_id __initdata samsung_dmi_table[] = { |
1438 | { | |
2d70b73a GKH |
1439 | .matches = { |
1440 | DMI_MATCH(DMI_SYS_VENDOR, | |
1441 | "SAMSUNG ELECTRONICS CO., LTD."), | |
3be324a9 | 1442 | DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */ |
2d70b73a | 1443 | }, |
2d70b73a GKH |
1444 | }, |
1445 | { | |
2d70b73a GKH |
1446 | .matches = { |
1447 | DMI_MATCH(DMI_SYS_VENDOR, | |
1448 | "SAMSUNG ELECTRONICS CO., LTD."), | |
3be324a9 | 1449 | DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /* Laptop */ |
2d70b73a | 1450 | }, |
2d70b73a | 1451 | }, |
78a7539b | 1452 | { |
78a7539b TC |
1453 | .matches = { |
1454 | DMI_MATCH(DMI_SYS_VENDOR, | |
1455 | "SAMSUNG ELECTRONICS CO., LTD."), | |
3be324a9 | 1456 | DMI_MATCH(DMI_CHASSIS_TYPE, "10"), /* Notebook */ |
78a7539b | 1457 | }, |
78a7539b | 1458 | }, |
f689c875 | 1459 | { |
f689c875 RGS |
1460 | .matches = { |
1461 | DMI_MATCH(DMI_SYS_VENDOR, | |
1462 | "SAMSUNG ELECTRONICS CO., LTD."), | |
3be324a9 | 1463 | DMI_MATCH(DMI_CHASSIS_TYPE, "14"), /* Sub-Notebook */ |
f689c875 | 1464 | }, |
7b3c257c | 1465 | }, |
e052067d CC |
1466 | /* DMI ids for laptops with bad Chassis Type */ |
1467 | { | |
1468 | .ident = "R40/R41", | |
1469 | .matches = { | |
1470 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), | |
1471 | DMI_MATCH(DMI_PRODUCT_NAME, "R40/R41"), | |
1472 | DMI_MATCH(DMI_BOARD_NAME, "R40/R41"), | |
1473 | }, | |
1474 | }, | |
a979e2e2 CC |
1475 | /* Specific DMI ids for laptop with quirks */ |
1476 | { | |
1477 | .callback = samsung_dmi_matched, | |
1478 | .ident = "N150P", | |
1479 | .matches = { | |
1480 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), | |
1481 | DMI_MATCH(DMI_PRODUCT_NAME, "N150P"), | |
1482 | DMI_MATCH(DMI_BOARD_NAME, "N150P"), | |
1483 | }, | |
1484 | .driver_data = &samsung_broken_acpi_video, | |
1485 | }, | |
1486 | { | |
1487 | .callback = samsung_dmi_matched, | |
1488 | .ident = "N145P/N250P/N260P", | |
1489 | .matches = { | |
1490 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), | |
1491 | DMI_MATCH(DMI_PRODUCT_NAME, "N145P/N250P/N260P"), | |
1492 | DMI_MATCH(DMI_BOARD_NAME, "N145P/N250P/N260P"), | |
1493 | }, | |
1494 | .driver_data = &samsung_broken_acpi_video, | |
1495 | }, | |
1496 | { | |
1497 | .callback = samsung_dmi_matched, | |
1498 | .ident = "N150/N210/N220", | |
1499 | .matches = { | |
1500 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), | |
1501 | DMI_MATCH(DMI_PRODUCT_NAME, "N150/N210/N220"), | |
1502 | DMI_MATCH(DMI_BOARD_NAME, "N150/N210/N220"), | |
1503 | }, | |
1504 | .driver_data = &samsung_broken_acpi_video, | |
1505 | }, | |
1506 | { | |
1507 | .callback = samsung_dmi_matched, | |
1508 | .ident = "NF110/NF210/NF310", | |
1509 | .matches = { | |
1510 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), | |
1511 | DMI_MATCH(DMI_PRODUCT_NAME, "NF110/NF210/NF310"), | |
1512 | DMI_MATCH(DMI_BOARD_NAME, "NF110/NF210/NF310"), | |
1513 | }, | |
1514 | .driver_data = &samsung_broken_acpi_video, | |
1515 | }, | |
09d5677c CC |
1516 | { |
1517 | .callback = samsung_dmi_matched, | |
1518 | .ident = "X360", | |
1519 | .matches = { | |
1520 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), | |
1521 | DMI_MATCH(DMI_PRODUCT_NAME, "X360"), | |
1522 | DMI_MATCH(DMI_BOARD_NAME, "X360"), | |
1523 | }, | |
1524 | .driver_data = &samsung_broken_acpi_video, | |
1525 | }, | |
2d70b73a GKH |
1526 | { }, |
1527 | }; | |
1528 | MODULE_DEVICE_TABLE(dmi, samsung_dmi_table); | |
1529 | ||
5dea7a20 | 1530 | static struct platform_device *samsung_platform_device; |
2d70b73a GKH |
1531 | |
1532 | static int __init samsung_init(void) | |
1533 | { | |
5dea7a20 CC |
1534 | struct samsung_laptop *samsung; |
1535 | int ret; | |
2d70b73a | 1536 | |
a979e2e2 | 1537 | quirks = &samsung_unknown; |
2d70b73a GKH |
1538 | if (!force && !dmi_check_system(samsung_dmi_table)) |
1539 | return -ENODEV; | |
1540 | ||
a6df4894 CC |
1541 | samsung = kzalloc(sizeof(*samsung), GFP_KERNEL); |
1542 | if (!samsung) | |
1543 | return -ENOMEM; | |
1544 | ||
1545 | mutex_init(&samsung->sabi_mutex); | |
f34cd9ca | 1546 | samsung->handle_backlight = true; |
a979e2e2 | 1547 | samsung->quirks = quirks; |
f34cd9ca | 1548 | |
a979e2e2 | 1549 | |
a60b2176 CC |
1550 | #ifdef CONFIG_ACPI |
1551 | if (samsung->quirks->broken_acpi_video) | |
1552 | acpi_video_dmi_promote_vendor(); | |
1553 | ||
f34cd9ca | 1554 | /* Don't handle backlight here if the acpi video already handle it */ |
a979e2e2 | 1555 | if (acpi_video_backlight_support()) { |
a60b2176 CC |
1556 | samsung->handle_backlight = false; |
1557 | } else if (samsung->quirks->broken_acpi_video) { | |
1558 | pr_info("Disabling ACPI video driver\n"); | |
a60b2176 | 1559 | acpi_video_unregister(); |
a979e2e2 | 1560 | } |
f34cd9ca | 1561 | #endif |
a979e2e2 | 1562 | |
5dea7a20 CC |
1563 | ret = samsung_platform_init(samsung); |
1564 | if (ret) | |
1565 | goto error_platform; | |
1566 | ||
1567 | ret = samsung_sabi_init(samsung); | |
1568 | if (ret) | |
1569 | goto error_sabi; | |
1570 | ||
3be324a9 CC |
1571 | #ifdef CONFIG_ACPI |
1572 | /* Only log that if we are really on a sabi platform */ | |
a60b2176 | 1573 | if (acpi_video_backlight_support()) |
3be324a9 CC |
1574 | pr_info("Backlight controlled by ACPI video driver\n"); |
1575 | #endif | |
1576 | ||
5dea7a20 CC |
1577 | ret = samsung_sysfs_init(samsung); |
1578 | if (ret) | |
1579 | goto error_sysfs; | |
1580 | ||
1581 | ret = samsung_backlight_init(samsung); | |
1582 | if (ret) | |
1583 | goto error_backlight; | |
1584 | ||
1585 | ret = samsung_rfkill_init(samsung); | |
1586 | if (ret) | |
1587 | goto error_rfkill; | |
1588 | ||
f674ebf1 CC |
1589 | ret = samsung_leds_init(samsung); |
1590 | if (ret) | |
1591 | goto error_leds; | |
1592 | ||
5b80fc40 CC |
1593 | ret = samsung_debugfs_init(samsung); |
1594 | if (ret) | |
1595 | goto error_debugfs; | |
1596 | ||
5dea7a20 CC |
1597 | samsung_platform_device = samsung->platform_device; |
1598 | return ret; | |
1599 | ||
5b80fc40 | 1600 | error_debugfs: |
f674ebf1 CC |
1601 | samsung_leds_exit(samsung); |
1602 | error_leds: | |
5b80fc40 | 1603 | samsung_rfkill_exit(samsung); |
5dea7a20 CC |
1604 | error_rfkill: |
1605 | samsung_backlight_exit(samsung); | |
1606 | error_backlight: | |
1607 | samsung_sysfs_exit(samsung); | |
1608 | error_sysfs: | |
1609 | samsung_sabi_exit(samsung); | |
1610 | error_sabi: | |
1611 | samsung_platform_exit(samsung); | |
1612 | error_platform: | |
a6df4894 | 1613 | kfree(samsung); |
5dea7a20 | 1614 | return ret; |
2d70b73a GKH |
1615 | } |
1616 | ||
1617 | static void __exit samsung_exit(void) | |
1618 | { | |
5dea7a20 CC |
1619 | struct samsung_laptop *samsung; |
1620 | ||
1621 | samsung = platform_get_drvdata(samsung_platform_device); | |
1622 | ||
5b80fc40 | 1623 | samsung_debugfs_exit(samsung); |
f674ebf1 | 1624 | samsung_leds_exit(samsung); |
5dea7a20 CC |
1625 | samsung_rfkill_exit(samsung); |
1626 | samsung_backlight_exit(samsung); | |
1627 | samsung_sysfs_exit(samsung); | |
1628 | samsung_sabi_exit(samsung); | |
1629 | samsung_platform_exit(samsung); | |
a6df4894 | 1630 | |
a6df4894 | 1631 | kfree(samsung); |
5dea7a20 | 1632 | samsung_platform_device = NULL; |
2d70b73a GKH |
1633 | } |
1634 | ||
1635 | module_init(samsung_init); | |
1636 | module_exit(samsung_exit); | |
1637 | ||
1638 | MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@suse.de>"); | |
1639 | MODULE_DESCRIPTION("Samsung Backlight driver"); | |
1640 | MODULE_LICENSE("GPL"); |