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> |
e0094244 | 29 | #include <linux/efi.h> |
a979e2e2 | 30 | #include <acpi/video.h> |
2d70b73a GKH |
31 | |
32 | /* | |
33 | * This driver is needed because a number of Samsung laptops do not hook | |
34 | * their control settings through ACPI. So we have to poke around in the | |
35 | * BIOS to do things like brightness values, and "special" key controls. | |
36 | */ | |
37 | ||
38 | /* | |
39 | * We have 0 - 8 as valid brightness levels. The specs say that level 0 should | |
40 | * be reserved by the BIOS (which really doesn't make much sense), we tell | |
41 | * userspace that the value is 0 - 7 and then just tell the hardware 1 - 8 | |
42 | */ | |
43 | #define MAX_BRIGHT 0x07 | |
44 | ||
45 | ||
46 | #define SABI_IFACE_MAIN 0x00 | |
47 | #define SABI_IFACE_SUB 0x02 | |
48 | #define SABI_IFACE_COMPLETE 0x04 | |
49 | #define SABI_IFACE_DATA 0x05 | |
50 | ||
84d482f2 CC |
51 | #define WL_STATUS_WLAN 0x0 |
52 | #define WL_STATUS_BT 0x2 | |
53 | ||
7e960711 CC |
54 | /* Structure get/set data using sabi */ |
55 | struct sabi_data { | |
56 | union { | |
57 | struct { | |
58 | u32 d0; | |
59 | u32 d1; | |
60 | u16 d2; | |
61 | u8 d3; | |
62 | }; | |
63 | u8 data[11]; | |
64 | }; | |
2d70b73a GKH |
65 | }; |
66 | ||
67 | struct sabi_header_offsets { | |
68 | u8 port; | |
69 | u8 re_mem; | |
70 | u8 iface_func; | |
71 | u8 en_mem; | |
72 | u8 data_offset; | |
73 | u8 data_segment; | |
74 | }; | |
75 | ||
76 | struct sabi_commands { | |
77 | /* | |
78 | * Brightness is 0 - 8, as described above. | |
79 | * Value 0 is for the BIOS to use | |
80 | */ | |
7e960711 CC |
81 | u16 get_brightness; |
82 | u16 set_brightness; | |
2d70b73a GKH |
83 | |
84 | /* | |
85 | * first byte: | |
86 | * 0x00 - wireless is off | |
87 | * 0x01 - wireless is on | |
88 | * second byte: | |
89 | * 0x02 - 3G is off | |
90 | * 0x03 - 3G is on | |
91 | * TODO, verify 3G is correct, that doesn't seem right... | |
92 | */ | |
7e960711 CC |
93 | u16 get_wireless_button; |
94 | u16 set_wireless_button; | |
2d70b73a GKH |
95 | |
96 | /* 0 is off, 1 is on */ | |
7e960711 CC |
97 | u16 get_backlight; |
98 | u16 set_backlight; | |
2d70b73a GKH |
99 | |
100 | /* | |
101 | * 0x80 or 0x00 - no action | |
102 | * 0x81 - recovery key pressed | |
103 | */ | |
7e960711 CC |
104 | u16 get_recovery_mode; |
105 | u16 set_recovery_mode; | |
2d70b73a GKH |
106 | |
107 | /* | |
108 | * on seclinux: 0 is low, 1 is high, | |
109 | * on swsmi: 0 is normal, 1 is silent, 2 is turbo | |
110 | */ | |
7e960711 CC |
111 | u16 get_performance_level; |
112 | u16 set_performance_level; | |
2d70b73a | 113 | |
cb5b5c91 CC |
114 | /* 0x80 is off, 0x81 is on */ |
115 | u16 get_battery_life_extender; | |
116 | u16 set_battery_life_extender; | |
117 | ||
3a75d378 CC |
118 | /* 0x80 is off, 0x81 is on */ |
119 | u16 get_usb_charge; | |
120 | u16 set_usb_charge; | |
121 | ||
84d482f2 CC |
122 | /* the first byte is for bluetooth and the third one is for wlan */ |
123 | u16 get_wireless_status; | |
124 | u16 set_wireless_status; | |
125 | ||
f674ebf1 CC |
126 | /* 0x81 to read, (0x82 | level << 8) to set, 0xaabb to enable */ |
127 | u16 kbd_backlight; | |
128 | ||
2d70b73a GKH |
129 | /* |
130 | * Tell the BIOS that Linux is running on this machine. | |
131 | * 81 is on, 80 is off | |
132 | */ | |
7e960711 | 133 | u16 set_linux; |
2d70b73a GKH |
134 | }; |
135 | ||
136 | struct sabi_performance_level { | |
137 | const char *name; | |
7e960711 | 138 | u16 value; |
2d70b73a GKH |
139 | }; |
140 | ||
141 | struct sabi_config { | |
84d482f2 | 142 | int sabi_version; |
2d70b73a GKH |
143 | const char *test_string; |
144 | u16 main_function; | |
145 | const struct sabi_header_offsets header_offsets; | |
146 | const struct sabi_commands commands; | |
147 | const struct sabi_performance_level performance_levels[4]; | |
148 | u8 min_brightness; | |
149 | u8 max_brightness; | |
150 | }; | |
151 | ||
152 | static const struct sabi_config sabi_configs[] = { | |
153 | { | |
84d482f2 CC |
154 | /* I don't know if it is really 2, but it it is |
155 | * less than 3 anyway */ | |
156 | .sabi_version = 2, | |
157 | ||
2d70b73a GKH |
158 | .test_string = "SECLINUX", |
159 | ||
160 | .main_function = 0x4c49, | |
161 | ||
162 | .header_offsets = { | |
163 | .port = 0x00, | |
164 | .re_mem = 0x02, | |
165 | .iface_func = 0x03, | |
166 | .en_mem = 0x04, | |
167 | .data_offset = 0x05, | |
168 | .data_segment = 0x07, | |
169 | }, | |
170 | ||
171 | .commands = { | |
172 | .get_brightness = 0x00, | |
173 | .set_brightness = 0x01, | |
174 | ||
175 | .get_wireless_button = 0x02, | |
176 | .set_wireless_button = 0x03, | |
177 | ||
178 | .get_backlight = 0x04, | |
179 | .set_backlight = 0x05, | |
180 | ||
181 | .get_recovery_mode = 0x06, | |
182 | .set_recovery_mode = 0x07, | |
183 | ||
184 | .get_performance_level = 0x08, | |
185 | .set_performance_level = 0x09, | |
186 | ||
cb5b5c91 CC |
187 | .get_battery_life_extender = 0xFFFF, |
188 | .set_battery_life_extender = 0xFFFF, | |
189 | ||
3a75d378 CC |
190 | .get_usb_charge = 0xFFFF, |
191 | .set_usb_charge = 0xFFFF, | |
192 | ||
84d482f2 CC |
193 | .get_wireless_status = 0xFFFF, |
194 | .set_wireless_status = 0xFFFF, | |
195 | ||
f674ebf1 CC |
196 | .kbd_backlight = 0xFFFF, |
197 | ||
2d70b73a GKH |
198 | .set_linux = 0x0a, |
199 | }, | |
200 | ||
201 | .performance_levels = { | |
202 | { | |
203 | .name = "silent", | |
204 | .value = 0, | |
205 | }, | |
206 | { | |
207 | .name = "normal", | |
208 | .value = 1, | |
209 | }, | |
210 | { }, | |
211 | }, | |
212 | .min_brightness = 1, | |
213 | .max_brightness = 8, | |
214 | }, | |
215 | { | |
84d482f2 CC |
216 | .sabi_version = 3, |
217 | ||
2d70b73a GKH |
218 | .test_string = "SwSmi@", |
219 | ||
220 | .main_function = 0x5843, | |
221 | ||
222 | .header_offsets = { | |
223 | .port = 0x00, | |
224 | .re_mem = 0x04, | |
225 | .iface_func = 0x02, | |
226 | .en_mem = 0x03, | |
227 | .data_offset = 0x05, | |
228 | .data_segment = 0x07, | |
229 | }, | |
230 | ||
231 | .commands = { | |
232 | .get_brightness = 0x10, | |
233 | .set_brightness = 0x11, | |
234 | ||
235 | .get_wireless_button = 0x12, | |
236 | .set_wireless_button = 0x13, | |
237 | ||
238 | .get_backlight = 0x2d, | |
239 | .set_backlight = 0x2e, | |
240 | ||
241 | .get_recovery_mode = 0xff, | |
242 | .set_recovery_mode = 0xff, | |
243 | ||
244 | .get_performance_level = 0x31, | |
245 | .set_performance_level = 0x32, | |
246 | ||
cb5b5c91 CC |
247 | .get_battery_life_extender = 0x65, |
248 | .set_battery_life_extender = 0x66, | |
249 | ||
3a75d378 CC |
250 | .get_usb_charge = 0x67, |
251 | .set_usb_charge = 0x68, | |
252 | ||
84d482f2 CC |
253 | .get_wireless_status = 0x69, |
254 | .set_wireless_status = 0x6a, | |
255 | ||
f674ebf1 CC |
256 | .kbd_backlight = 0x78, |
257 | ||
2d70b73a GKH |
258 | .set_linux = 0xff, |
259 | }, | |
260 | ||
261 | .performance_levels = { | |
262 | { | |
263 | .name = "normal", | |
264 | .value = 0, | |
265 | }, | |
266 | { | |
267 | .name = "silent", | |
268 | .value = 1, | |
269 | }, | |
270 | { | |
271 | .name = "overclock", | |
272 | .value = 2, | |
273 | }, | |
274 | { }, | |
275 | }, | |
276 | .min_brightness = 0, | |
277 | .max_brightness = 8, | |
278 | }, | |
279 | { }, | |
280 | }; | |
281 | ||
5b80fc40 CC |
282 | /* |
283 | * samsung-laptop/ - debugfs root directory | |
284 | * f0000_segment - dump f0000 segment | |
285 | * command - current command | |
286 | * data - current data | |
287 | * d0, d1, d2, d3 - data fields | |
288 | * call - call SABI using command and data | |
289 | * | |
290 | * This allow to call arbitrary sabi commands wihout | |
291 | * modifying the driver at all. | |
292 | * For example, setting the keyboard backlight brightness to 5 | |
293 | * | |
294 | * echo 0x78 > command | |
295 | * echo 0x0582 > d0 | |
296 | * echo 0 > d1 | |
297 | * echo 0 > d2 | |
298 | * echo 0 > d3 | |
299 | * cat call | |
300 | */ | |
301 | ||
302 | struct samsung_laptop_debug { | |
303 | struct dentry *root; | |
304 | struct sabi_data data; | |
305 | u16 command; | |
306 | ||
307 | struct debugfs_blob_wrapper f0000_wrapper; | |
308 | struct debugfs_blob_wrapper data_wrapper; | |
6f6ae06e | 309 | struct debugfs_blob_wrapper sdiag_wrapper; |
5b80fc40 CC |
310 | }; |
311 | ||
84d482f2 CC |
312 | struct samsung_laptop; |
313 | ||
314 | struct samsung_rfkill { | |
315 | struct samsung_laptop *samsung; | |
316 | struct rfkill *rfkill; | |
317 | enum rfkill_type type; | |
318 | }; | |
319 | ||
a6df4894 CC |
320 | struct samsung_laptop { |
321 | const struct sabi_config *config; | |
2d70b73a | 322 | |
a6df4894 CC |
323 | void __iomem *sabi; |
324 | void __iomem *sabi_iface; | |
325 | void __iomem *f0000_segment; | |
326 | ||
327 | struct mutex sabi_mutex; | |
328 | ||
5dea7a20 | 329 | struct platform_device *platform_device; |
a6df4894 | 330 | struct backlight_device *backlight_device; |
84d482f2 CC |
331 | |
332 | struct samsung_rfkill wlan; | |
333 | struct samsung_rfkill bluetooth; | |
a6df4894 | 334 | |
f674ebf1 CC |
335 | struct led_classdev kbd_led; |
336 | int kbd_led_wk; | |
337 | struct workqueue_struct *led_workqueue; | |
338 | struct work_struct kbd_led_work; | |
339 | ||
5b80fc40 | 340 | struct samsung_laptop_debug debug; |
a979e2e2 | 341 | struct samsung_quirks *quirks; |
5b80fc40 | 342 | |
f34cd9ca | 343 | bool handle_backlight; |
a6df4894 | 344 | bool has_stepping_quirk; |
6f6ae06e CC |
345 | |
346 | char sdiag[64]; | |
a6df4894 CC |
347 | }; |
348 | ||
a979e2e2 CC |
349 | struct samsung_quirks { |
350 | bool broken_acpi_video; | |
351 | }; | |
352 | ||
353 | static struct samsung_quirks samsung_unknown = {}; | |
5dea7a20 | 354 | |
a979e2e2 CC |
355 | static struct samsung_quirks samsung_broken_acpi_video = { |
356 | .broken_acpi_video = true, | |
357 | }; | |
2d70b73a | 358 | |
90ab5ee9 | 359 | static bool force; |
2d70b73a GKH |
360 | module_param(force, bool, 0); |
361 | MODULE_PARM_DESC(force, | |
362 | "Disable the DMI check and forces the driver to be loaded"); | |
363 | ||
90ab5ee9 | 364 | static bool debug; |
2d70b73a GKH |
365 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
366 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
367 | ||
7e960711 CC |
368 | static int sabi_command(struct samsung_laptop *samsung, u16 command, |
369 | struct sabi_data *in, | |
370 | struct sabi_data *out) | |
2d70b73a | 371 | { |
a6df4894 | 372 | const struct sabi_config *config = samsung->config; |
7e960711 | 373 | int ret = 0; |
a6df4894 | 374 | u16 port = readw(samsung->sabi + config->header_offsets.port); |
2d70b73a GKH |
375 | u8 complete, iface_data; |
376 | ||
a6df4894 | 377 | mutex_lock(&samsung->sabi_mutex); |
2d70b73a | 378 | |
7e960711 CC |
379 | if (debug) { |
380 | if (in) | |
2e777187 CC |
381 | pr_info("SABI command:0x%04x " |
382 | "data:{0x%08x, 0x%08x, 0x%04x, 0x%02x}", | |
7e960711 CC |
383 | command, in->d0, in->d1, in->d2, in->d3); |
384 | else | |
2e777187 | 385 | pr_info("SABI command:0x%04x", command); |
7e960711 CC |
386 | } |
387 | ||
2d70b73a | 388 | /* enable memory to be able to write to it */ |
a6df4894 | 389 | outb(readb(samsung->sabi + config->header_offsets.en_mem), port); |
2d70b73a GKH |
390 | |
391 | /* write out the command */ | |
a6df4894 CC |
392 | writew(config->main_function, samsung->sabi_iface + SABI_IFACE_MAIN); |
393 | writew(command, samsung->sabi_iface + SABI_IFACE_SUB); | |
394 | writeb(0, samsung->sabi_iface + SABI_IFACE_COMPLETE); | |
7e960711 CC |
395 | if (in) { |
396 | writel(in->d0, samsung->sabi_iface + SABI_IFACE_DATA); | |
397 | writel(in->d1, samsung->sabi_iface + SABI_IFACE_DATA + 4); | |
398 | writew(in->d2, samsung->sabi_iface + SABI_IFACE_DATA + 8); | |
399 | writeb(in->d3, samsung->sabi_iface + SABI_IFACE_DATA + 10); | |
400 | } | |
a6df4894 | 401 | outb(readb(samsung->sabi + config->header_offsets.iface_func), port); |
2d70b73a GKH |
402 | |
403 | /* write protect memory to make it safe */ | |
a6df4894 | 404 | outb(readb(samsung->sabi + config->header_offsets.re_mem), port); |
2d70b73a GKH |
405 | |
406 | /* see if the command actually succeeded */ | |
a6df4894 CC |
407 | complete = readb(samsung->sabi_iface + SABI_IFACE_COMPLETE); |
408 | iface_data = readb(samsung->sabi_iface + SABI_IFACE_DATA); | |
2e777187 CC |
409 | |
410 | /* iface_data = 0xFF happens when a command is not known | |
411 | * so we only add a warning in debug mode since we will | |
412 | * probably issue some unknown command at startup to find | |
413 | * out which features are supported */ | |
414 | if (complete != 0xaa || (iface_data == 0xff && debug)) | |
7e960711 CC |
415 | pr_warn("SABI command 0x%04x failed with" |
416 | " completion flag 0x%02x and interface data 0x%02x", | |
417 | command, complete, iface_data); | |
2e777187 CC |
418 | |
419 | if (complete != 0xaa || iface_data == 0xff) { | |
7e960711 | 420 | ret = -EINVAL; |
2d70b73a GKH |
421 | goto exit; |
422 | } | |
7e960711 CC |
423 | |
424 | if (out) { | |
425 | out->d0 = readl(samsung->sabi_iface + SABI_IFACE_DATA); | |
426 | out->d1 = readl(samsung->sabi_iface + SABI_IFACE_DATA + 4); | |
427 | out->d2 = readw(samsung->sabi_iface + SABI_IFACE_DATA + 2); | |
428 | out->d3 = readb(samsung->sabi_iface + SABI_IFACE_DATA + 1); | |
429 | } | |
430 | ||
431 | if (debug && out) { | |
2e777187 | 432 | pr_info("SABI return data:{0x%08x, 0x%08x, 0x%04x, 0x%02x}", |
7e960711 CC |
433 | out->d0, out->d1, out->d2, out->d3); |
434 | } | |
2d70b73a GKH |
435 | |
436 | exit: | |
a6df4894 | 437 | mutex_unlock(&samsung->sabi_mutex); |
7e960711 | 438 | return ret; |
2d70b73a GKH |
439 | } |
440 | ||
7e960711 CC |
441 | /* simple wrappers usable with most commands */ |
442 | static int sabi_set_commandb(struct samsung_laptop *samsung, | |
443 | u16 command, u8 data) | |
2d70b73a | 444 | { |
85229440 | 445 | struct sabi_data in = { { { .d0 = 0, .d1 = 0, .d2 = 0, .d3 = 0 } } }; |
2d70b73a | 446 | |
7e960711 CC |
447 | in.data[0] = data; |
448 | return sabi_command(samsung, command, &in, NULL); | |
2d70b73a GKH |
449 | } |
450 | ||
5dea7a20 | 451 | static int read_brightness(struct samsung_laptop *samsung) |
2d70b73a | 452 | { |
a6df4894 CC |
453 | const struct sabi_config *config = samsung->config; |
454 | const struct sabi_commands *commands = &samsung->config->commands; | |
7e960711 | 455 | struct sabi_data sretval; |
2d70b73a GKH |
456 | int user_brightness = 0; |
457 | int retval; | |
458 | ||
7e960711 CC |
459 | retval = sabi_command(samsung, commands->get_brightness, |
460 | NULL, &sretval); | |
461 | if (retval) | |
462 | return retval; | |
463 | ||
464 | user_brightness = sretval.data[0]; | |
465 | if (user_brightness > config->min_brightness) | |
466 | user_brightness -= config->min_brightness; | |
467 | else | |
468 | user_brightness = 0; | |
469 | ||
2d70b73a GKH |
470 | return user_brightness; |
471 | } | |
472 | ||
5dea7a20 | 473 | static void set_brightness(struct samsung_laptop *samsung, u8 user_brightness) |
2d70b73a | 474 | { |
a6df4894 CC |
475 | const struct sabi_config *config = samsung->config; |
476 | const struct sabi_commands *commands = &samsung->config->commands; | |
477 | u8 user_level = user_brightness + config->min_brightness; | |
2d70b73a | 478 | |
a6df4894 | 479 | if (samsung->has_stepping_quirk && user_level != 0) { |
ac080523 JS |
480 | /* |
481 | * short circuit if the specified level is what's already set | |
482 | * to prevent the screen from flickering needlessly | |
483 | */ | |
5dea7a20 | 484 | if (user_brightness == read_brightness(samsung)) |
ac080523 JS |
485 | return; |
486 | ||
7e960711 | 487 | sabi_set_commandb(samsung, commands->set_brightness, 0); |
ac080523 JS |
488 | } |
489 | ||
7e960711 | 490 | sabi_set_commandb(samsung, commands->set_brightness, user_level); |
2d70b73a GKH |
491 | } |
492 | ||
493 | static int get_brightness(struct backlight_device *bd) | |
494 | { | |
5dea7a20 CC |
495 | struct samsung_laptop *samsung = bl_get_data(bd); |
496 | ||
497 | return read_brightness(samsung); | |
2d70b73a GKH |
498 | } |
499 | ||
5dea7a20 | 500 | static void check_for_stepping_quirk(struct samsung_laptop *samsung) |
ac080523 | 501 | { |
5dea7a20 CC |
502 | int initial_level; |
503 | int check_level; | |
504 | int orig_level = read_brightness(samsung); | |
ac080523 JS |
505 | |
506 | /* | |
507 | * Some laptops exhibit the strange behaviour of stepping toward | |
508 | * (rather than setting) the brightness except when changing to/from | |
509 | * brightness level 0. This behaviour is checked for here and worked | |
510 | * around in set_brightness. | |
511 | */ | |
512 | ||
ba05b237 | 513 | if (orig_level == 0) |
5dea7a20 | 514 | set_brightness(samsung, 1); |
ba05b237 | 515 | |
5dea7a20 | 516 | initial_level = read_brightness(samsung); |
ba05b237 | 517 | |
ac080523 JS |
518 | if (initial_level <= 2) |
519 | check_level = initial_level + 2; | |
520 | else | |
521 | check_level = initial_level - 2; | |
522 | ||
a6df4894 | 523 | samsung->has_stepping_quirk = false; |
5dea7a20 | 524 | set_brightness(samsung, check_level); |
ac080523 | 525 | |
5dea7a20 | 526 | if (read_brightness(samsung) != check_level) { |
a6df4894 | 527 | samsung->has_stepping_quirk = true; |
ac080523 JS |
528 | pr_info("enabled workaround for brightness stepping quirk\n"); |
529 | } | |
530 | ||
5dea7a20 | 531 | set_brightness(samsung, orig_level); |
ac080523 JS |
532 | } |
533 | ||
2d70b73a GKH |
534 | static int update_status(struct backlight_device *bd) |
535 | { | |
5dea7a20 | 536 | struct samsung_laptop *samsung = bl_get_data(bd); |
a6df4894 CC |
537 | const struct sabi_commands *commands = &samsung->config->commands; |
538 | ||
5dea7a20 | 539 | set_brightness(samsung, bd->props.brightness); |
2d70b73a GKH |
540 | |
541 | if (bd->props.power == FB_BLANK_UNBLANK) | |
7e960711 | 542 | sabi_set_commandb(samsung, commands->set_backlight, 1); |
2d70b73a | 543 | else |
7e960711 | 544 | sabi_set_commandb(samsung, commands->set_backlight, 0); |
5dea7a20 | 545 | |
2d70b73a GKH |
546 | return 0; |
547 | } | |
548 | ||
549 | static const struct backlight_ops backlight_ops = { | |
550 | .get_brightness = get_brightness, | |
551 | .update_status = update_status, | |
552 | }; | |
553 | ||
84d482f2 | 554 | static int seclinux_rfkill_set(void *data, bool blocked) |
2d70b73a | 555 | { |
20db88e3 CC |
556 | struct samsung_rfkill *srfkill = data; |
557 | struct samsung_laptop *samsung = srfkill->samsung; | |
a6df4894 CC |
558 | const struct sabi_commands *commands = &samsung->config->commands; |
559 | ||
84d482f2 CC |
560 | return sabi_set_commandb(samsung, commands->set_wireless_button, |
561 | !blocked); | |
562 | } | |
563 | ||
564 | static struct rfkill_ops seclinux_rfkill_ops = { | |
565 | .set_block = seclinux_rfkill_set, | |
566 | }; | |
567 | ||
568 | static int swsmi_wireless_status(struct samsung_laptop *samsung, | |
569 | struct sabi_data *data) | |
570 | { | |
571 | const struct sabi_commands *commands = &samsung->config->commands; | |
572 | ||
573 | return sabi_command(samsung, commands->get_wireless_status, | |
574 | NULL, data); | |
575 | } | |
576 | ||
577 | static int swsmi_rfkill_set(void *priv, bool blocked) | |
578 | { | |
579 | struct samsung_rfkill *srfkill = priv; | |
580 | struct samsung_laptop *samsung = srfkill->samsung; | |
581 | const struct sabi_commands *commands = &samsung->config->commands; | |
582 | struct sabi_data data; | |
583 | int ret, i; | |
584 | ||
585 | ret = swsmi_wireless_status(samsung, &data); | |
586 | if (ret) | |
587 | return ret; | |
588 | ||
589 | /* Don't set the state for non-present devices */ | |
590 | for (i = 0; i < 4; i++) | |
591 | if (data.data[i] == 0x02) | |
592 | data.data[1] = 0; | |
593 | ||
594 | if (srfkill->type == RFKILL_TYPE_WLAN) | |
595 | data.data[WL_STATUS_WLAN] = !blocked; | |
596 | else if (srfkill->type == RFKILL_TYPE_BLUETOOTH) | |
597 | data.data[WL_STATUS_BT] = !blocked; | |
598 | ||
599 | return sabi_command(samsung, commands->set_wireless_status, | |
600 | &data, &data); | |
601 | } | |
602 | ||
603 | static void swsmi_rfkill_query(struct rfkill *rfkill, void *priv) | |
604 | { | |
605 | struct samsung_rfkill *srfkill = priv; | |
606 | struct samsung_laptop *samsung = srfkill->samsung; | |
607 | struct sabi_data data; | |
608 | int ret; | |
609 | ||
610 | ret = swsmi_wireless_status(samsung, &data); | |
611 | if (ret) | |
612 | return ; | |
613 | ||
614 | if (srfkill->type == RFKILL_TYPE_WLAN) | |
615 | ret = data.data[WL_STATUS_WLAN]; | |
616 | else if (srfkill->type == RFKILL_TYPE_BLUETOOTH) | |
617 | ret = data.data[WL_STATUS_BT]; | |
2d70b73a | 618 | else |
84d482f2 | 619 | return ; |
2d70b73a | 620 | |
84d482f2 | 621 | rfkill_set_sw_state(rfkill, !ret); |
2d70b73a GKH |
622 | } |
623 | ||
84d482f2 CC |
624 | static struct rfkill_ops swsmi_rfkill_ops = { |
625 | .set_block = swsmi_rfkill_set, | |
626 | .query = swsmi_rfkill_query, | |
2d70b73a GKH |
627 | }; |
628 | ||
2d70b73a GKH |
629 | static ssize_t get_performance_level(struct device *dev, |
630 | struct device_attribute *attr, char *buf) | |
631 | { | |
5dea7a20 | 632 | struct samsung_laptop *samsung = dev_get_drvdata(dev); |
a6df4894 | 633 | const struct sabi_config *config = samsung->config; |
5dea7a20 | 634 | const struct sabi_commands *commands = &config->commands; |
7e960711 | 635 | struct sabi_data sretval; |
2d70b73a GKH |
636 | int retval; |
637 | int i; | |
638 | ||
639 | /* Read the state */ | |
7e960711 CC |
640 | retval = sabi_command(samsung, commands->get_performance_level, |
641 | NULL, &sretval); | |
2d70b73a GKH |
642 | if (retval) |
643 | return retval; | |
644 | ||
645 | /* The logic is backwards, yeah, lots of fun... */ | |
a6df4894 | 646 | for (i = 0; config->performance_levels[i].name; ++i) { |
7e960711 | 647 | if (sretval.data[0] == config->performance_levels[i].value) |
a6df4894 | 648 | return sprintf(buf, "%s\n", config->performance_levels[i].name); |
2d70b73a GKH |
649 | } |
650 | return sprintf(buf, "%s\n", "unknown"); | |
651 | } | |
652 | ||
653 | static ssize_t set_performance_level(struct device *dev, | |
654 | struct device_attribute *attr, const char *buf, | |
655 | size_t count) | |
656 | { | |
5dea7a20 | 657 | struct samsung_laptop *samsung = dev_get_drvdata(dev); |
a6df4894 | 658 | const struct sabi_config *config = samsung->config; |
5dea7a20 CC |
659 | const struct sabi_commands *commands = &config->commands; |
660 | int i; | |
a6df4894 | 661 | |
5dea7a20 CC |
662 | if (count < 1) |
663 | return count; | |
664 | ||
665 | for (i = 0; config->performance_levels[i].name; ++i) { | |
666 | const struct sabi_performance_level *level = | |
667 | &config->performance_levels[i]; | |
668 | if (!strncasecmp(level->name, buf, strlen(level->name))) { | |
7e960711 CC |
669 | sabi_set_commandb(samsung, |
670 | commands->set_performance_level, | |
671 | level->value); | |
5dea7a20 | 672 | break; |
2d70b73a | 673 | } |
2d70b73a | 674 | } |
5dea7a20 CC |
675 | |
676 | if (!config->performance_levels[i].name) | |
677 | return -EINVAL; | |
678 | ||
2d70b73a GKH |
679 | return count; |
680 | } | |
5dea7a20 | 681 | |
2d70b73a GKH |
682 | static DEVICE_ATTR(performance_level, S_IWUSR | S_IRUGO, |
683 | get_performance_level, set_performance_level); | |
684 | ||
cb5b5c91 CC |
685 | static int read_battery_life_extender(struct samsung_laptop *samsung) |
686 | { | |
687 | const struct sabi_commands *commands = &samsung->config->commands; | |
688 | struct sabi_data data; | |
689 | int retval; | |
690 | ||
691 | if (commands->get_battery_life_extender == 0xFFFF) | |
692 | return -ENODEV; | |
693 | ||
694 | memset(&data, 0, sizeof(data)); | |
695 | data.data[0] = 0x80; | |
696 | retval = sabi_command(samsung, commands->get_battery_life_extender, | |
697 | &data, &data); | |
698 | ||
699 | if (retval) | |
700 | return retval; | |
701 | ||
702 | if (data.data[0] != 0 && data.data[0] != 1) | |
703 | return -ENODEV; | |
704 | ||
705 | return data.data[0]; | |
706 | } | |
707 | ||
708 | static int write_battery_life_extender(struct samsung_laptop *samsung, | |
709 | int enabled) | |
710 | { | |
711 | const struct sabi_commands *commands = &samsung->config->commands; | |
712 | struct sabi_data data; | |
713 | ||
714 | memset(&data, 0, sizeof(data)); | |
715 | data.data[0] = 0x80 | enabled; | |
716 | return sabi_command(samsung, commands->set_battery_life_extender, | |
717 | &data, NULL); | |
718 | } | |
719 | ||
720 | static ssize_t get_battery_life_extender(struct device *dev, | |
721 | struct device_attribute *attr, | |
722 | char *buf) | |
723 | { | |
724 | struct samsung_laptop *samsung = dev_get_drvdata(dev); | |
725 | int ret; | |
726 | ||
727 | ret = read_battery_life_extender(samsung); | |
728 | if (ret < 0) | |
729 | return ret; | |
730 | ||
731 | return sprintf(buf, "%d\n", ret); | |
732 | } | |
733 | ||
734 | static ssize_t set_battery_life_extender(struct device *dev, | |
735 | struct device_attribute *attr, | |
736 | const char *buf, size_t count) | |
737 | { | |
738 | struct samsung_laptop *samsung = dev_get_drvdata(dev); | |
739 | int ret, value; | |
740 | ||
741 | if (!count || sscanf(buf, "%i", &value) != 1) | |
742 | return -EINVAL; | |
743 | ||
744 | ret = write_battery_life_extender(samsung, !!value); | |
745 | if (ret < 0) | |
746 | return ret; | |
747 | ||
748 | return count; | |
749 | } | |
750 | ||
751 | static DEVICE_ATTR(battery_life_extender, S_IWUSR | S_IRUGO, | |
752 | get_battery_life_extender, set_battery_life_extender); | |
753 | ||
3a75d378 CC |
754 | static int read_usb_charge(struct samsung_laptop *samsung) |
755 | { | |
756 | const struct sabi_commands *commands = &samsung->config->commands; | |
757 | struct sabi_data data; | |
758 | int retval; | |
759 | ||
760 | if (commands->get_usb_charge == 0xFFFF) | |
761 | return -ENODEV; | |
762 | ||
763 | memset(&data, 0, sizeof(data)); | |
764 | data.data[0] = 0x80; | |
765 | retval = sabi_command(samsung, commands->get_usb_charge, | |
766 | &data, &data); | |
767 | ||
768 | if (retval) | |
769 | return retval; | |
770 | ||
771 | if (data.data[0] != 0 && data.data[0] != 1) | |
772 | return -ENODEV; | |
773 | ||
774 | return data.data[0]; | |
775 | } | |
776 | ||
777 | static int write_usb_charge(struct samsung_laptop *samsung, | |
778 | int enabled) | |
779 | { | |
780 | const struct sabi_commands *commands = &samsung->config->commands; | |
781 | struct sabi_data data; | |
782 | ||
783 | memset(&data, 0, sizeof(data)); | |
784 | data.data[0] = 0x80 | enabled; | |
785 | return sabi_command(samsung, commands->set_usb_charge, | |
786 | &data, NULL); | |
787 | } | |
788 | ||
789 | static ssize_t get_usb_charge(struct device *dev, | |
790 | struct device_attribute *attr, | |
791 | char *buf) | |
792 | { | |
793 | struct samsung_laptop *samsung = dev_get_drvdata(dev); | |
794 | int ret; | |
795 | ||
796 | ret = read_usb_charge(samsung); | |
797 | if (ret < 0) | |
798 | return ret; | |
799 | ||
800 | return sprintf(buf, "%d\n", ret); | |
801 | } | |
802 | ||
803 | static ssize_t set_usb_charge(struct device *dev, | |
804 | struct device_attribute *attr, | |
805 | const char *buf, size_t count) | |
806 | { | |
807 | struct samsung_laptop *samsung = dev_get_drvdata(dev); | |
808 | int ret, value; | |
809 | ||
810 | if (!count || sscanf(buf, "%i", &value) != 1) | |
811 | return -EINVAL; | |
812 | ||
813 | ret = write_usb_charge(samsung, !!value); | |
814 | if (ret < 0) | |
815 | return ret; | |
816 | ||
817 | return count; | |
818 | } | |
819 | ||
820 | static DEVICE_ATTR(usb_charge, S_IWUSR | S_IRUGO, | |
821 | get_usb_charge, set_usb_charge); | |
822 | ||
a66c1662 CC |
823 | static struct attribute *platform_attributes[] = { |
824 | &dev_attr_performance_level.attr, | |
cb5b5c91 | 825 | &dev_attr_battery_life_extender.attr, |
3a75d378 | 826 | &dev_attr_usb_charge.attr, |
a66c1662 CC |
827 | NULL |
828 | }; | |
2d70b73a | 829 | |
5dea7a20 CC |
830 | static int find_signature(void __iomem *memcheck, const char *testStr) |
831 | { | |
832 | int i = 0; | |
833 | int loca; | |
834 | ||
835 | for (loca = 0; loca < 0xffff; loca++) { | |
836 | char temp = readb(memcheck + loca); | |
837 | ||
838 | if (temp == testStr[i]) { | |
839 | if (i == strlen(testStr)-1) | |
840 | break; | |
841 | ++i; | |
842 | } else { | |
843 | i = 0; | |
844 | } | |
845 | } | |
846 | return loca; | |
847 | } | |
848 | ||
849 | static void samsung_rfkill_exit(struct samsung_laptop *samsung) | |
850 | { | |
84d482f2 CC |
851 | if (samsung->wlan.rfkill) { |
852 | rfkill_unregister(samsung->wlan.rfkill); | |
853 | rfkill_destroy(samsung->wlan.rfkill); | |
854 | samsung->wlan.rfkill = NULL; | |
855 | } | |
856 | if (samsung->bluetooth.rfkill) { | |
857 | rfkill_unregister(samsung->bluetooth.rfkill); | |
858 | rfkill_destroy(samsung->bluetooth.rfkill); | |
859 | samsung->bluetooth.rfkill = NULL; | |
5dea7a20 CC |
860 | } |
861 | } | |
862 | ||
84d482f2 CC |
863 | static int samsung_new_rfkill(struct samsung_laptop *samsung, |
864 | struct samsung_rfkill *arfkill, | |
865 | const char *name, enum rfkill_type type, | |
866 | const struct rfkill_ops *ops, | |
867 | int blocked) | |
5dea7a20 | 868 | { |
84d482f2 CC |
869 | struct rfkill **rfkill = &arfkill->rfkill; |
870 | int ret; | |
5dea7a20 | 871 | |
84d482f2 CC |
872 | arfkill->type = type; |
873 | arfkill->samsung = samsung; | |
874 | ||
875 | *rfkill = rfkill_alloc(name, &samsung->platform_device->dev, | |
876 | type, ops, arfkill); | |
877 | ||
878 | if (!*rfkill) | |
879 | return -EINVAL; | |
880 | ||
881 | if (blocked != -1) | |
882 | rfkill_init_sw_state(*rfkill, blocked); | |
883 | ||
884 | ret = rfkill_register(*rfkill); | |
885 | if (ret) { | |
886 | rfkill_destroy(*rfkill); | |
887 | *rfkill = NULL; | |
888 | return ret; | |
5dea7a20 | 889 | } |
84d482f2 CC |
890 | return 0; |
891 | } | |
5dea7a20 | 892 | |
84d482f2 CC |
893 | static int __init samsung_rfkill_init_seclinux(struct samsung_laptop *samsung) |
894 | { | |
895 | return samsung_new_rfkill(samsung, &samsung->wlan, "samsung-wlan", | |
896 | RFKILL_TYPE_WLAN, &seclinux_rfkill_ops, -1); | |
897 | } | |
898 | ||
899 | static int __init samsung_rfkill_init_swsmi(struct samsung_laptop *samsung) | |
900 | { | |
901 | struct sabi_data data; | |
902 | int ret; | |
903 | ||
904 | ret = swsmi_wireless_status(samsung, &data); | |
20db88e3 CC |
905 | if (ret) { |
906 | /* Some swsmi laptops use the old seclinux way to control | |
907 | * wireless devices */ | |
908 | if (ret == -EINVAL) | |
909 | ret = samsung_rfkill_init_seclinux(samsung); | |
84d482f2 | 910 | return ret; |
20db88e3 | 911 | } |
84d482f2 CC |
912 | |
913 | /* 0x02 seems to mean that the device is no present/available */ | |
914 | ||
915 | if (data.data[WL_STATUS_WLAN] != 0x02) | |
916 | ret = samsung_new_rfkill(samsung, &samsung->wlan, | |
917 | "samsung-wlan", | |
918 | RFKILL_TYPE_WLAN, | |
919 | &swsmi_rfkill_ops, | |
920 | !data.data[WL_STATUS_WLAN]); | |
921 | if (ret) | |
922 | goto exit; | |
923 | ||
924 | if (data.data[WL_STATUS_BT] != 0x02) | |
925 | ret = samsung_new_rfkill(samsung, &samsung->bluetooth, | |
926 | "samsung-bluetooth", | |
927 | RFKILL_TYPE_BLUETOOTH, | |
928 | &swsmi_rfkill_ops, | |
929 | !data.data[WL_STATUS_BT]); | |
930 | if (ret) | |
931 | goto exit; | |
932 | ||
933 | exit: | |
934 | if (ret) | |
935 | samsung_rfkill_exit(samsung); | |
936 | ||
937 | return ret; | |
938 | } | |
939 | ||
940 | static int __init samsung_rfkill_init(struct samsung_laptop *samsung) | |
941 | { | |
942 | if (samsung->config->sabi_version == 2) | |
943 | return samsung_rfkill_init_seclinux(samsung); | |
944 | if (samsung->config->sabi_version == 3) | |
945 | return samsung_rfkill_init_swsmi(samsung); | |
5dea7a20 CC |
946 | return 0; |
947 | } | |
948 | ||
f674ebf1 CC |
949 | static int kbd_backlight_enable(struct samsung_laptop *samsung) |
950 | { | |
951 | const struct sabi_commands *commands = &samsung->config->commands; | |
952 | struct sabi_data data; | |
953 | int retval; | |
954 | ||
955 | if (commands->kbd_backlight == 0xFFFF) | |
956 | return -ENODEV; | |
957 | ||
958 | memset(&data, 0, sizeof(data)); | |
959 | data.d0 = 0xaabb; | |
960 | retval = sabi_command(samsung, commands->kbd_backlight, | |
961 | &data, &data); | |
962 | ||
963 | if (retval) | |
964 | return retval; | |
965 | ||
966 | if (data.d0 != 0xccdd) | |
967 | return -ENODEV; | |
968 | return 0; | |
969 | } | |
970 | ||
971 | static int kbd_backlight_read(struct samsung_laptop *samsung) | |
972 | { | |
973 | const struct sabi_commands *commands = &samsung->config->commands; | |
974 | struct sabi_data data; | |
975 | int retval; | |
976 | ||
977 | memset(&data, 0, sizeof(data)); | |
978 | data.data[0] = 0x81; | |
979 | retval = sabi_command(samsung, commands->kbd_backlight, | |
980 | &data, &data); | |
981 | ||
982 | if (retval) | |
983 | return retval; | |
984 | ||
985 | return data.data[0]; | |
986 | } | |
987 | ||
988 | static int kbd_backlight_write(struct samsung_laptop *samsung, int brightness) | |
989 | { | |
990 | const struct sabi_commands *commands = &samsung->config->commands; | |
991 | struct sabi_data data; | |
992 | ||
993 | memset(&data, 0, sizeof(data)); | |
994 | data.d0 = 0x82 | ((brightness & 0xFF) << 8); | |
995 | return sabi_command(samsung, commands->kbd_backlight, | |
996 | &data, NULL); | |
997 | } | |
998 | ||
999 | static void kbd_led_update(struct work_struct *work) | |
1000 | { | |
1001 | struct samsung_laptop *samsung; | |
1002 | ||
1003 | samsung = container_of(work, struct samsung_laptop, kbd_led_work); | |
1004 | kbd_backlight_write(samsung, samsung->kbd_led_wk); | |
1005 | } | |
1006 | ||
1007 | static void kbd_led_set(struct led_classdev *led_cdev, | |
1008 | enum led_brightness value) | |
1009 | { | |
1010 | struct samsung_laptop *samsung; | |
1011 | ||
1012 | samsung = container_of(led_cdev, struct samsung_laptop, kbd_led); | |
1013 | ||
1014 | if (value > samsung->kbd_led.max_brightness) | |
1015 | value = samsung->kbd_led.max_brightness; | |
1016 | else if (value < 0) | |
1017 | value = 0; | |
1018 | ||
1019 | samsung->kbd_led_wk = value; | |
1020 | queue_work(samsung->led_workqueue, &samsung->kbd_led_work); | |
1021 | } | |
1022 | ||
1023 | static enum led_brightness kbd_led_get(struct led_classdev *led_cdev) | |
1024 | { | |
1025 | struct samsung_laptop *samsung; | |
1026 | ||
1027 | samsung = container_of(led_cdev, struct samsung_laptop, kbd_led); | |
1028 | return kbd_backlight_read(samsung); | |
1029 | } | |
1030 | ||
1031 | static void samsung_leds_exit(struct samsung_laptop *samsung) | |
1032 | { | |
1033 | if (!IS_ERR_OR_NULL(samsung->kbd_led.dev)) | |
1034 | led_classdev_unregister(&samsung->kbd_led); | |
1035 | if (samsung->led_workqueue) | |
1036 | destroy_workqueue(samsung->led_workqueue); | |
1037 | } | |
1038 | ||
1039 | static int __init samsung_leds_init(struct samsung_laptop *samsung) | |
1040 | { | |
1041 | int ret = 0; | |
1042 | ||
1043 | samsung->led_workqueue = create_singlethread_workqueue("led_workqueue"); | |
1044 | if (!samsung->led_workqueue) | |
1045 | return -ENOMEM; | |
1046 | ||
1047 | if (kbd_backlight_enable(samsung) >= 0) { | |
1048 | INIT_WORK(&samsung->kbd_led_work, kbd_led_update); | |
1049 | ||
1050 | samsung->kbd_led.name = "samsung::kbd_backlight"; | |
1051 | samsung->kbd_led.brightness_set = kbd_led_set; | |
1052 | samsung->kbd_led.brightness_get = kbd_led_get; | |
1053 | samsung->kbd_led.max_brightness = 8; | |
1054 | ||
1055 | ret = led_classdev_register(&samsung->platform_device->dev, | |
1056 | &samsung->kbd_led); | |
1057 | } | |
1058 | ||
1059 | if (ret) | |
1060 | samsung_leds_exit(samsung); | |
1061 | ||
1062 | return ret; | |
1063 | } | |
1064 | ||
5dea7a20 CC |
1065 | static void samsung_backlight_exit(struct samsung_laptop *samsung) |
1066 | { | |
1067 | if (samsung->backlight_device) { | |
1068 | backlight_device_unregister(samsung->backlight_device); | |
1069 | samsung->backlight_device = NULL; | |
1070 | } | |
1071 | } | |
1072 | ||
1073 | static int __init samsung_backlight_init(struct samsung_laptop *samsung) | |
1074 | { | |
1075 | struct backlight_device *bd; | |
1076 | struct backlight_properties props; | |
1077 | ||
f34cd9ca CC |
1078 | if (!samsung->handle_backlight) |
1079 | return 0; | |
1080 | ||
5dea7a20 CC |
1081 | memset(&props, 0, sizeof(struct backlight_properties)); |
1082 | props.type = BACKLIGHT_PLATFORM; | |
1083 | props.max_brightness = samsung->config->max_brightness - | |
1084 | samsung->config->min_brightness; | |
1085 | ||
1086 | bd = backlight_device_register("samsung", | |
1087 | &samsung->platform_device->dev, | |
1088 | samsung, &backlight_ops, | |
1089 | &props); | |
1090 | if (IS_ERR(bd)) | |
1091 | return PTR_ERR(bd); | |
1092 | ||
1093 | samsung->backlight_device = bd; | |
1094 | samsung->backlight_device->props.brightness = read_brightness(samsung); | |
1095 | samsung->backlight_device->props.power = FB_BLANK_UNBLANK; | |
1096 | backlight_update_status(samsung->backlight_device); | |
1097 | ||
1098 | return 0; | |
1099 | } | |
1100 | ||
bde9e509 | 1101 | static umode_t samsung_sysfs_is_visible(struct kobject *kobj, |
a66c1662 CC |
1102 | struct attribute *attr, int idx) |
1103 | { | |
1104 | struct device *dev = container_of(kobj, struct device, kobj); | |
1105 | struct platform_device *pdev = to_platform_device(dev); | |
1106 | struct samsung_laptop *samsung = platform_get_drvdata(pdev); | |
1107 | bool ok = true; | |
1108 | ||
1109 | if (attr == &dev_attr_performance_level.attr) | |
1110 | ok = !!samsung->config->performance_levels[0].name; | |
cb5b5c91 CC |
1111 | if (attr == &dev_attr_battery_life_extender.attr) |
1112 | ok = !!(read_battery_life_extender(samsung) >= 0); | |
3a75d378 CC |
1113 | if (attr == &dev_attr_usb_charge.attr) |
1114 | ok = !!(read_usb_charge(samsung) >= 0); | |
a66c1662 CC |
1115 | |
1116 | return ok ? attr->mode : 0; | |
1117 | } | |
1118 | ||
1119 | static struct attribute_group platform_attribute_group = { | |
1120 | .is_visible = samsung_sysfs_is_visible, | |
1121 | .attrs = platform_attributes | |
1122 | }; | |
1123 | ||
5dea7a20 CC |
1124 | static void samsung_sysfs_exit(struct samsung_laptop *samsung) |
1125 | { | |
a66c1662 CC |
1126 | struct platform_device *device = samsung->platform_device; |
1127 | ||
1128 | sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); | |
5dea7a20 CC |
1129 | } |
1130 | ||
1131 | static int __init samsung_sysfs_init(struct samsung_laptop *samsung) | |
1132 | { | |
a66c1662 CC |
1133 | struct platform_device *device = samsung->platform_device; |
1134 | ||
1135 | return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); | |
1136 | ||
5dea7a20 CC |
1137 | } |
1138 | ||
5b80fc40 CC |
1139 | static int show_call(struct seq_file *m, void *data) |
1140 | { | |
1141 | struct samsung_laptop *samsung = m->private; | |
1142 | struct sabi_data *sdata = &samsung->debug.data; | |
1143 | int ret; | |
1144 | ||
1145 | seq_printf(m, "SABI 0x%04x {0x%08x, 0x%08x, 0x%04x, 0x%02x}\n", | |
1146 | samsung->debug.command, | |
1147 | sdata->d0, sdata->d1, sdata->d2, sdata->d3); | |
1148 | ||
1149 | ret = sabi_command(samsung, samsung->debug.command, sdata, sdata); | |
1150 | ||
1151 | if (ret) { | |
1152 | seq_printf(m, "SABI command 0x%04x failed\n", | |
1153 | samsung->debug.command); | |
1154 | return ret; | |
1155 | } | |
1156 | ||
1157 | seq_printf(m, "SABI {0x%08x, 0x%08x, 0x%04x, 0x%02x}\n", | |
1158 | sdata->d0, sdata->d1, sdata->d2, sdata->d3); | |
1159 | return 0; | |
1160 | } | |
1161 | ||
1162 | static int samsung_debugfs_open(struct inode *inode, struct file *file) | |
1163 | { | |
1164 | return single_open(file, show_call, inode->i_private); | |
1165 | } | |
1166 | ||
1167 | static const struct file_operations samsung_laptop_call_io_ops = { | |
1168 | .owner = THIS_MODULE, | |
1169 | .open = samsung_debugfs_open, | |
1170 | .read = seq_read, | |
1171 | .llseek = seq_lseek, | |
1172 | .release = single_release, | |
1173 | }; | |
1174 | ||
1175 | static void samsung_debugfs_exit(struct samsung_laptop *samsung) | |
1176 | { | |
1177 | debugfs_remove_recursive(samsung->debug.root); | |
1178 | } | |
1179 | ||
1180 | static int samsung_debugfs_init(struct samsung_laptop *samsung) | |
1181 | { | |
1182 | struct dentry *dent; | |
1183 | ||
1184 | samsung->debug.root = debugfs_create_dir("samsung-laptop", NULL); | |
1185 | if (!samsung->debug.root) { | |
1186 | pr_err("failed to create debugfs directory"); | |
1187 | goto error_debugfs; | |
1188 | } | |
1189 | ||
1190 | samsung->debug.f0000_wrapper.data = samsung->f0000_segment; | |
1191 | samsung->debug.f0000_wrapper.size = 0xffff; | |
1192 | ||
1193 | samsung->debug.data_wrapper.data = &samsung->debug.data; | |
1194 | samsung->debug.data_wrapper.size = sizeof(samsung->debug.data); | |
1195 | ||
6f6ae06e CC |
1196 | samsung->debug.sdiag_wrapper.data = samsung->sdiag; |
1197 | samsung->debug.sdiag_wrapper.size = strlen(samsung->sdiag); | |
1198 | ||
5b80fc40 CC |
1199 | dent = debugfs_create_u16("command", S_IRUGO | S_IWUSR, |
1200 | samsung->debug.root, &samsung->debug.command); | |
1201 | if (!dent) | |
1202 | goto error_debugfs; | |
1203 | ||
1204 | dent = debugfs_create_u32("d0", S_IRUGO | S_IWUSR, samsung->debug.root, | |
1205 | &samsung->debug.data.d0); | |
1206 | if (!dent) | |
1207 | goto error_debugfs; | |
1208 | ||
1209 | dent = debugfs_create_u32("d1", S_IRUGO | S_IWUSR, samsung->debug.root, | |
1210 | &samsung->debug.data.d1); | |
1211 | if (!dent) | |
1212 | goto error_debugfs; | |
1213 | ||
1214 | dent = debugfs_create_u16("d2", S_IRUGO | S_IWUSR, samsung->debug.root, | |
1215 | &samsung->debug.data.d2); | |
1216 | if (!dent) | |
1217 | goto error_debugfs; | |
1218 | ||
1219 | dent = debugfs_create_u8("d3", S_IRUGO | S_IWUSR, samsung->debug.root, | |
1220 | &samsung->debug.data.d3); | |
1221 | if (!dent) | |
1222 | goto error_debugfs; | |
1223 | ||
1224 | dent = debugfs_create_blob("data", S_IRUGO | S_IWUSR, | |
1225 | samsung->debug.root, | |
1226 | &samsung->debug.data_wrapper); | |
1227 | if (!dent) | |
1228 | goto error_debugfs; | |
1229 | ||
1230 | dent = debugfs_create_blob("f0000_segment", S_IRUSR | S_IWUSR, | |
1231 | samsung->debug.root, | |
1232 | &samsung->debug.f0000_wrapper); | |
1233 | if (!dent) | |
1234 | goto error_debugfs; | |
1235 | ||
1236 | dent = debugfs_create_file("call", S_IFREG | S_IRUGO, | |
1237 | samsung->debug.root, samsung, | |
1238 | &samsung_laptop_call_io_ops); | |
1239 | if (!dent) | |
1240 | goto error_debugfs; | |
1241 | ||
6f6ae06e CC |
1242 | dent = debugfs_create_blob("sdiag", S_IRUGO | S_IWUSR, |
1243 | samsung->debug.root, | |
1244 | &samsung->debug.sdiag_wrapper); | |
1245 | if (!dent) | |
1246 | goto error_debugfs; | |
1247 | ||
5b80fc40 CC |
1248 | return 0; |
1249 | ||
1250 | error_debugfs: | |
1251 | samsung_debugfs_exit(samsung); | |
1252 | return -ENOMEM; | |
1253 | } | |
1254 | ||
5dea7a20 CC |
1255 | static void samsung_sabi_exit(struct samsung_laptop *samsung) |
1256 | { | |
1257 | const struct sabi_config *config = samsung->config; | |
1258 | ||
1259 | /* Turn off "Linux" mode in the BIOS */ | |
1260 | if (config && config->commands.set_linux != 0xff) | |
7e960711 | 1261 | sabi_set_commandb(samsung, config->commands.set_linux, 0x80); |
5dea7a20 CC |
1262 | |
1263 | if (samsung->sabi_iface) { | |
1264 | iounmap(samsung->sabi_iface); | |
1265 | samsung->sabi_iface = NULL; | |
1266 | } | |
1267 | if (samsung->f0000_segment) { | |
1268 | iounmap(samsung->f0000_segment); | |
1269 | samsung->f0000_segment = NULL; | |
1270 | } | |
1271 | ||
1272 | samsung->config = NULL; | |
1273 | } | |
1274 | ||
49dd7730 CC |
1275 | static __init void samsung_sabi_infos(struct samsung_laptop *samsung, int loca, |
1276 | unsigned int ifaceP) | |
5dea7a20 CC |
1277 | { |
1278 | const struct sabi_config *config = samsung->config; | |
1279 | ||
1280 | printk(KERN_DEBUG "This computer supports SABI==%x\n", | |
1281 | loca + 0xf0000 - 6); | |
49dd7730 | 1282 | |
5dea7a20 CC |
1283 | printk(KERN_DEBUG "SABI header:\n"); |
1284 | printk(KERN_DEBUG " SMI Port Number = 0x%04x\n", | |
1285 | readw(samsung->sabi + config->header_offsets.port)); | |
1286 | printk(KERN_DEBUG " SMI Interface Function = 0x%02x\n", | |
1287 | readb(samsung->sabi + config->header_offsets.iface_func)); | |
1288 | printk(KERN_DEBUG " SMI enable memory buffer = 0x%02x\n", | |
1289 | readb(samsung->sabi + config->header_offsets.en_mem)); | |
1290 | printk(KERN_DEBUG " SMI restore memory buffer = 0x%02x\n", | |
1291 | readb(samsung->sabi + config->header_offsets.re_mem)); | |
1292 | printk(KERN_DEBUG " SABI data offset = 0x%04x\n", | |
1293 | readw(samsung->sabi + config->header_offsets.data_offset)); | |
1294 | printk(KERN_DEBUG " SABI data segment = 0x%04x\n", | |
1295 | readw(samsung->sabi + config->header_offsets.data_segment)); | |
5dea7a20 | 1296 | |
49dd7730 | 1297 | printk(KERN_DEBUG " SABI pointer = 0x%08x\n", ifaceP); |
5dea7a20 CC |
1298 | } |
1299 | ||
6f6ae06e CC |
1300 | static void __init samsung_sabi_diag(struct samsung_laptop *samsung) |
1301 | { | |
1302 | int loca = find_signature(samsung->f0000_segment, "SDiaG@"); | |
1303 | int i; | |
1304 | ||
1305 | if (loca == 0xffff) | |
1306 | return ; | |
1307 | ||
1308 | /* Example: | |
1309 | * Ident: @SDiaG@686XX-N90X3A/966-SEC-07HL-S90X3A | |
1310 | * | |
1311 | * Product name: 90X3A | |
1312 | * BIOS Version: 07HL | |
1313 | */ | |
1314 | loca += 1; | |
1315 | for (i = 0; loca < 0xffff && i < sizeof(samsung->sdiag) - 1; loca++) { | |
1316 | char temp = readb(samsung->f0000_segment + loca); | |
1317 | ||
1318 | if (isalnum(temp) || temp == '/' || temp == '-') | |
1319 | samsung->sdiag[i++] = temp; | |
1320 | else | |
1321 | break ; | |
1322 | } | |
1323 | ||
1324 | if (debug && samsung->sdiag[0]) | |
1325 | pr_info("sdiag: %s", samsung->sdiag); | |
1326 | } | |
1327 | ||
5dea7a20 CC |
1328 | static int __init samsung_sabi_init(struct samsung_laptop *samsung) |
1329 | { | |
1330 | const struct sabi_config *config = NULL; | |
1331 | const struct sabi_commands *commands; | |
1332 | unsigned int ifaceP; | |
1333 | int ret = 0; | |
1334 | int i; | |
1335 | int loca; | |
1336 | ||
1337 | samsung->f0000_segment = ioremap_nocache(0xf0000, 0xffff); | |
1338 | if (!samsung->f0000_segment) { | |
3be324a9 CC |
1339 | if (debug || force) |
1340 | pr_err("Can't map the segment at 0xf0000\n"); | |
5dea7a20 CC |
1341 | ret = -EINVAL; |
1342 | goto exit; | |
1343 | } | |
1344 | ||
6f6ae06e CC |
1345 | samsung_sabi_diag(samsung); |
1346 | ||
5dea7a20 CC |
1347 | /* Try to find one of the signatures in memory to find the header */ |
1348 | for (i = 0; sabi_configs[i].test_string != 0; ++i) { | |
1349 | samsung->config = &sabi_configs[i]; | |
1350 | loca = find_signature(samsung->f0000_segment, | |
1351 | samsung->config->test_string); | |
1352 | if (loca != 0xffff) | |
1353 | break; | |
1354 | } | |
1355 | ||
1356 | if (loca == 0xffff) { | |
3be324a9 CC |
1357 | if (debug || force) |
1358 | pr_err("This computer does not support SABI\n"); | |
5dea7a20 CC |
1359 | ret = -ENODEV; |
1360 | goto exit; | |
1361 | } | |
1362 | ||
1363 | config = samsung->config; | |
1364 | commands = &config->commands; | |
1365 | ||
1366 | /* point to the SMI port Number */ | |
1367 | loca += 1; | |
1368 | samsung->sabi = (samsung->f0000_segment + loca); | |
1369 | ||
5dea7a20 CC |
1370 | /* Get a pointer to the SABI Interface */ |
1371 | ifaceP = (readw(samsung->sabi + config->header_offsets.data_segment) & 0x0ffff) << 4; | |
1372 | ifaceP += readw(samsung->sabi + config->header_offsets.data_offset) & 0x0ffff; | |
49dd7730 CC |
1373 | |
1374 | if (debug) | |
1375 | samsung_sabi_infos(samsung, loca, ifaceP); | |
1376 | ||
5dea7a20 CC |
1377 | samsung->sabi_iface = ioremap_nocache(ifaceP, 16); |
1378 | if (!samsung->sabi_iface) { | |
1379 | pr_err("Can't remap %x\n", ifaceP); | |
1380 | ret = -EINVAL; | |
1381 | goto exit; | |
1382 | } | |
1383 | ||
5dea7a20 CC |
1384 | /* Turn on "Linux" mode in the BIOS */ |
1385 | if (commands->set_linux != 0xff) { | |
7e960711 CC |
1386 | int retval = sabi_set_commandb(samsung, |
1387 | commands->set_linux, 0x81); | |
5dea7a20 CC |
1388 | if (retval) { |
1389 | pr_warn("Linux mode was not set!\n"); | |
1390 | ret = -ENODEV; | |
1391 | goto exit; | |
1392 | } | |
1393 | } | |
1394 | ||
1395 | /* Check for stepping quirk */ | |
f34cd9ca CC |
1396 | if (samsung->handle_backlight) |
1397 | check_for_stepping_quirk(samsung); | |
5dea7a20 | 1398 | |
2e777187 CC |
1399 | pr_info("detected SABI interface: %s\n", |
1400 | samsung->config->test_string); | |
1401 | ||
5dea7a20 CC |
1402 | exit: |
1403 | if (ret) | |
1404 | samsung_sabi_exit(samsung); | |
1405 | ||
1406 | return ret; | |
1407 | } | |
1408 | ||
1409 | static void samsung_platform_exit(struct samsung_laptop *samsung) | |
1410 | { | |
1411 | if (samsung->platform_device) { | |
1412 | platform_device_unregister(samsung->platform_device); | |
1413 | samsung->platform_device = NULL; | |
1414 | } | |
1415 | } | |
1416 | ||
1417 | static int __init samsung_platform_init(struct samsung_laptop *samsung) | |
1418 | { | |
1419 | struct platform_device *pdev; | |
1420 | ||
1421 | pdev = platform_device_register_simple("samsung", -1, NULL, 0); | |
1422 | if (IS_ERR(pdev)) | |
1423 | return PTR_ERR(pdev); | |
1424 | ||
1425 | samsung->platform_device = pdev; | |
1426 | platform_set_drvdata(samsung->platform_device, samsung); | |
1427 | return 0; | |
1428 | } | |
1429 | ||
a979e2e2 CC |
1430 | static struct samsung_quirks *quirks; |
1431 | ||
1432 | static int __init samsung_dmi_matched(const struct dmi_system_id *d) | |
1433 | { | |
1434 | quirks = d->driver_data; | |
1435 | return 0; | |
1436 | } | |
1437 | ||
2d70b73a GKH |
1438 | static struct dmi_system_id __initdata samsung_dmi_table[] = { |
1439 | { | |
2d70b73a GKH |
1440 | .matches = { |
1441 | DMI_MATCH(DMI_SYS_VENDOR, | |
1442 | "SAMSUNG ELECTRONICS CO., LTD."), | |
3be324a9 | 1443 | DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */ |
2d70b73a | 1444 | }, |
2d70b73a GKH |
1445 | }, |
1446 | { | |
2d70b73a GKH |
1447 | .matches = { |
1448 | DMI_MATCH(DMI_SYS_VENDOR, | |
1449 | "SAMSUNG ELECTRONICS CO., LTD."), | |
3be324a9 | 1450 | DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /* Laptop */ |
2d70b73a | 1451 | }, |
2d70b73a | 1452 | }, |
78a7539b | 1453 | { |
78a7539b TC |
1454 | .matches = { |
1455 | DMI_MATCH(DMI_SYS_VENDOR, | |
1456 | "SAMSUNG ELECTRONICS CO., LTD."), | |
3be324a9 | 1457 | DMI_MATCH(DMI_CHASSIS_TYPE, "10"), /* Notebook */ |
78a7539b | 1458 | }, |
78a7539b | 1459 | }, |
f689c875 | 1460 | { |
f689c875 RGS |
1461 | .matches = { |
1462 | DMI_MATCH(DMI_SYS_VENDOR, | |
1463 | "SAMSUNG ELECTRONICS CO., LTD."), | |
3be324a9 | 1464 | DMI_MATCH(DMI_CHASSIS_TYPE, "14"), /* Sub-Notebook */ |
f689c875 | 1465 | }, |
7b3c257c | 1466 | }, |
e052067d CC |
1467 | /* DMI ids for laptops with bad Chassis Type */ |
1468 | { | |
1469 | .ident = "R40/R41", | |
1470 | .matches = { | |
1471 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), | |
1472 | DMI_MATCH(DMI_PRODUCT_NAME, "R40/R41"), | |
1473 | DMI_MATCH(DMI_BOARD_NAME, "R40/R41"), | |
1474 | }, | |
1475 | }, | |
a979e2e2 CC |
1476 | /* Specific DMI ids for laptop with quirks */ |
1477 | { | |
1478 | .callback = samsung_dmi_matched, | |
1479 | .ident = "N150P", | |
1480 | .matches = { | |
1481 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), | |
1482 | DMI_MATCH(DMI_PRODUCT_NAME, "N150P"), | |
1483 | DMI_MATCH(DMI_BOARD_NAME, "N150P"), | |
1484 | }, | |
1485 | .driver_data = &samsung_broken_acpi_video, | |
1486 | }, | |
1487 | { | |
1488 | .callback = samsung_dmi_matched, | |
1489 | .ident = "N145P/N250P/N260P", | |
1490 | .matches = { | |
1491 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), | |
1492 | DMI_MATCH(DMI_PRODUCT_NAME, "N145P/N250P/N260P"), | |
1493 | DMI_MATCH(DMI_BOARD_NAME, "N145P/N250P/N260P"), | |
1494 | }, | |
1495 | .driver_data = &samsung_broken_acpi_video, | |
1496 | }, | |
1497 | { | |
1498 | .callback = samsung_dmi_matched, | |
1499 | .ident = "N150/N210/N220", | |
1500 | .matches = { | |
1501 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), | |
1502 | DMI_MATCH(DMI_PRODUCT_NAME, "N150/N210/N220"), | |
1503 | DMI_MATCH(DMI_BOARD_NAME, "N150/N210/N220"), | |
1504 | }, | |
1505 | .driver_data = &samsung_broken_acpi_video, | |
1506 | }, | |
1507 | { | |
1508 | .callback = samsung_dmi_matched, | |
1509 | .ident = "NF110/NF210/NF310", | |
1510 | .matches = { | |
1511 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), | |
1512 | DMI_MATCH(DMI_PRODUCT_NAME, "NF110/NF210/NF310"), | |
1513 | DMI_MATCH(DMI_BOARD_NAME, "NF110/NF210/NF310"), | |
1514 | }, | |
1515 | .driver_data = &samsung_broken_acpi_video, | |
1516 | }, | |
09d5677c CC |
1517 | { |
1518 | .callback = samsung_dmi_matched, | |
1519 | .ident = "X360", | |
1520 | .matches = { | |
1521 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), | |
1522 | DMI_MATCH(DMI_PRODUCT_NAME, "X360"), | |
1523 | DMI_MATCH(DMI_BOARD_NAME, "X360"), | |
1524 | }, | |
1525 | .driver_data = &samsung_broken_acpi_video, | |
1526 | }, | |
e04c200f SF |
1527 | { |
1528 | .callback = samsung_dmi_matched, | |
1529 | .ident = "N250P", | |
1530 | .matches = { | |
1531 | DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), | |
1532 | DMI_MATCH(DMI_PRODUCT_NAME, "N250P"), | |
1533 | DMI_MATCH(DMI_BOARD_NAME, "N250P"), | |
1534 | }, | |
1535 | .driver_data = &samsung_broken_acpi_video, | |
1536 | }, | |
2d70b73a GKH |
1537 | { }, |
1538 | }; | |
1539 | MODULE_DEVICE_TABLE(dmi, samsung_dmi_table); | |
1540 | ||
5dea7a20 | 1541 | static struct platform_device *samsung_platform_device; |
2d70b73a GKH |
1542 | |
1543 | static int __init samsung_init(void) | |
1544 | { | |
5dea7a20 CC |
1545 | struct samsung_laptop *samsung; |
1546 | int ret; | |
2d70b73a | 1547 | |
e0094244 MF |
1548 | if (efi_enabled(EFI_BOOT)) |
1549 | return -ENODEV; | |
1550 | ||
a979e2e2 | 1551 | quirks = &samsung_unknown; |
2d70b73a GKH |
1552 | if (!force && !dmi_check_system(samsung_dmi_table)) |
1553 | return -ENODEV; | |
1554 | ||
a6df4894 CC |
1555 | samsung = kzalloc(sizeof(*samsung), GFP_KERNEL); |
1556 | if (!samsung) | |
1557 | return -ENOMEM; | |
1558 | ||
1559 | mutex_init(&samsung->sabi_mutex); | |
f34cd9ca | 1560 | samsung->handle_backlight = true; |
a979e2e2 | 1561 | samsung->quirks = quirks; |
f34cd9ca | 1562 | |
a979e2e2 | 1563 | |
a60b2176 CC |
1564 | #ifdef CONFIG_ACPI |
1565 | if (samsung->quirks->broken_acpi_video) | |
1566 | acpi_video_dmi_promote_vendor(); | |
1567 | ||
f34cd9ca | 1568 | /* Don't handle backlight here if the acpi video already handle it */ |
a979e2e2 | 1569 | if (acpi_video_backlight_support()) { |
a60b2176 CC |
1570 | samsung->handle_backlight = false; |
1571 | } else if (samsung->quirks->broken_acpi_video) { | |
1572 | pr_info("Disabling ACPI video driver\n"); | |
a60b2176 | 1573 | acpi_video_unregister(); |
a979e2e2 | 1574 | } |
f34cd9ca | 1575 | #endif |
a979e2e2 | 1576 | |
5dea7a20 CC |
1577 | ret = samsung_platform_init(samsung); |
1578 | if (ret) | |
1579 | goto error_platform; | |
1580 | ||
1581 | ret = samsung_sabi_init(samsung); | |
1582 | if (ret) | |
1583 | goto error_sabi; | |
1584 | ||
3be324a9 CC |
1585 | #ifdef CONFIG_ACPI |
1586 | /* Only log that if we are really on a sabi platform */ | |
a60b2176 | 1587 | if (acpi_video_backlight_support()) |
3be324a9 CC |
1588 | pr_info("Backlight controlled by ACPI video driver\n"); |
1589 | #endif | |
1590 | ||
5dea7a20 CC |
1591 | ret = samsung_sysfs_init(samsung); |
1592 | if (ret) | |
1593 | goto error_sysfs; | |
1594 | ||
1595 | ret = samsung_backlight_init(samsung); | |
1596 | if (ret) | |
1597 | goto error_backlight; | |
1598 | ||
1599 | ret = samsung_rfkill_init(samsung); | |
1600 | if (ret) | |
1601 | goto error_rfkill; | |
1602 | ||
f674ebf1 CC |
1603 | ret = samsung_leds_init(samsung); |
1604 | if (ret) | |
1605 | goto error_leds; | |
1606 | ||
5b80fc40 CC |
1607 | ret = samsung_debugfs_init(samsung); |
1608 | if (ret) | |
1609 | goto error_debugfs; | |
1610 | ||
5dea7a20 CC |
1611 | samsung_platform_device = samsung->platform_device; |
1612 | return ret; | |
1613 | ||
5b80fc40 | 1614 | error_debugfs: |
f674ebf1 CC |
1615 | samsung_leds_exit(samsung); |
1616 | error_leds: | |
5b80fc40 | 1617 | samsung_rfkill_exit(samsung); |
5dea7a20 CC |
1618 | error_rfkill: |
1619 | samsung_backlight_exit(samsung); | |
1620 | error_backlight: | |
1621 | samsung_sysfs_exit(samsung); | |
1622 | error_sysfs: | |
1623 | samsung_sabi_exit(samsung); | |
1624 | error_sabi: | |
1625 | samsung_platform_exit(samsung); | |
1626 | error_platform: | |
a6df4894 | 1627 | kfree(samsung); |
5dea7a20 | 1628 | return ret; |
2d70b73a GKH |
1629 | } |
1630 | ||
1631 | static void __exit samsung_exit(void) | |
1632 | { | |
5dea7a20 CC |
1633 | struct samsung_laptop *samsung; |
1634 | ||
1635 | samsung = platform_get_drvdata(samsung_platform_device); | |
1636 | ||
5b80fc40 | 1637 | samsung_debugfs_exit(samsung); |
f674ebf1 | 1638 | samsung_leds_exit(samsung); |
5dea7a20 CC |
1639 | samsung_rfkill_exit(samsung); |
1640 | samsung_backlight_exit(samsung); | |
1641 | samsung_sysfs_exit(samsung); | |
1642 | samsung_sabi_exit(samsung); | |
1643 | samsung_platform_exit(samsung); | |
a6df4894 | 1644 | |
a6df4894 | 1645 | kfree(samsung); |
5dea7a20 | 1646 | samsung_platform_device = NULL; |
2d70b73a GKH |
1647 | } |
1648 | ||
1649 | module_init(samsung_init); | |
1650 | module_exit(samsung_exit); | |
1651 | ||
1652 | MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@suse.de>"); | |
1653 | MODULE_DESCRIPTION("Samsung Backlight driver"); | |
1654 | MODULE_LICENSE("GPL"); |