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Commit | Line | Data |
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ad8f07cc MG |
1 | /* |
2 | * Driver for Dell laptop extras | |
3 | * | |
4 | * Copyright (c) Red Hat <mjg@redhat.com> | |
5 | * | |
6 | * Based on documentation in the libsmbios package, Copyright (C) 2005 Dell | |
7 | * Inc. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/kernel.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/platform_device.h> | |
18 | #include <linux/backlight.h> | |
19 | #include <linux/err.h> | |
20 | #include <linux/dmi.h> | |
21 | #include <linux/io.h> | |
22 | #include <linux/rfkill.h> | |
23 | #include <linux/power_supply.h> | |
24 | #include <linux/acpi.h> | |
116ee77b | 25 | #include <linux/mm.h> |
814cb8ad | 26 | #include <linux/i8042.h> |
5a0e3ad6 | 27 | #include <linux/slab.h> |
cad73120 | 28 | #include "../../firmware/dcdbas.h" |
ad8f07cc MG |
29 | |
30 | #define BRIGHTNESS_TOKEN 0x7d | |
31 | ||
32 | /* This structure will be modified by the firmware when we enter | |
33 | * system management mode, hence the volatiles */ | |
34 | ||
35 | struct calling_interface_buffer { | |
36 | u16 class; | |
37 | u16 select; | |
38 | volatile u32 input[4]; | |
39 | volatile u32 output[4]; | |
40 | } __packed; | |
41 | ||
42 | struct calling_interface_token { | |
43 | u16 tokenID; | |
44 | u16 location; | |
45 | union { | |
46 | u16 value; | |
47 | u16 stringlength; | |
48 | }; | |
49 | }; | |
50 | ||
51 | struct calling_interface_structure { | |
52 | struct dmi_header header; | |
53 | u16 cmdIOAddress; | |
54 | u8 cmdIOCode; | |
55 | u32 supportedCmds; | |
56 | struct calling_interface_token tokens[]; | |
57 | } __packed; | |
58 | ||
59 | static int da_command_address; | |
60 | static int da_command_code; | |
61 | static int da_num_tokens; | |
62 | static struct calling_interface_token *da_tokens; | |
63 | ||
ada3248a AJ |
64 | static struct platform_driver platform_driver = { |
65 | .driver = { | |
66 | .name = "dell-laptop", | |
67 | .owner = THIS_MODULE, | |
68 | } | |
69 | }; | |
70 | ||
71 | static struct platform_device *platform_device; | |
ad8f07cc MG |
72 | static struct backlight_device *dell_backlight_device; |
73 | static struct rfkill *wifi_rfkill; | |
74 | static struct rfkill *bluetooth_rfkill; | |
75 | static struct rfkill *wwan_rfkill; | |
76 | ||
77 | static const struct dmi_system_id __initdata dell_device_table[] = { | |
78 | { | |
79 | .ident = "Dell laptop", | |
80 | .matches = { | |
81 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
82 | DMI_MATCH(DMI_CHASSIS_TYPE, "8"), | |
83 | }, | |
84 | }, | |
410d44c7 RK |
85 | { |
86 | .matches = { | |
87 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
88 | DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /*Laptop*/ | |
89 | }, | |
90 | }, | |
cb6a7937 EA |
91 | { |
92 | .ident = "Dell Computer Corporation", | |
93 | .matches = { | |
94 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"), | |
95 | DMI_MATCH(DMI_CHASSIS_TYPE, "8"), | |
96 | }, | |
97 | }, | |
ad8f07cc MG |
98 | { } |
99 | }; | |
100 | ||
e5fefd0c ML |
101 | static struct dmi_system_id __devinitdata dell_blacklist[] = { |
102 | /* Supported by compal-laptop */ | |
103 | { | |
104 | .ident = "Dell Mini 9", | |
105 | .matches = { | |
106 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
107 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"), | |
108 | }, | |
109 | }, | |
110 | { | |
111 | .ident = "Dell Mini 10", | |
112 | .matches = { | |
113 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
114 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"), | |
115 | }, | |
116 | }, | |
117 | { | |
118 | .ident = "Dell Mini 10v", | |
119 | .matches = { | |
120 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
121 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"), | |
122 | }, | |
123 | }, | |
c3f755e3 VE |
124 | { |
125 | .ident = "Dell Mini 1012", | |
126 | .matches = { | |
127 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
128 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"), | |
129 | }, | |
130 | }, | |
e5fefd0c ML |
131 | { |
132 | .ident = "Dell Inspiron 11z", | |
133 | .matches = { | |
134 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
135 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"), | |
136 | }, | |
137 | }, | |
138 | { | |
139 | .ident = "Dell Mini 12", | |
140 | .matches = { | |
141 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
142 | DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"), | |
143 | }, | |
144 | }, | |
145 | {} | |
146 | }; | |
147 | ||
116ee77b | 148 | static struct calling_interface_buffer *buffer; |
94d8f785 IM |
149 | static struct page *bufferpage; |
150 | static DEFINE_MUTEX(buffer_mutex); | |
116ee77b | 151 | |
c6760ac4 MG |
152 | static int hwswitch_state; |
153 | ||
116ee77b SH |
154 | static void get_buffer(void) |
155 | { | |
156 | mutex_lock(&buffer_mutex); | |
157 | memset(buffer, 0, sizeof(struct calling_interface_buffer)); | |
158 | } | |
159 | ||
160 | static void release_buffer(void) | |
161 | { | |
162 | mutex_unlock(&buffer_mutex); | |
163 | } | |
164 | ||
4788df4c | 165 | static void __init parse_da_table(const struct dmi_header *dm) |
ad8f07cc MG |
166 | { |
167 | /* Final token is a terminator, so we don't want to copy it */ | |
168 | int tokens = (dm->length-11)/sizeof(struct calling_interface_token)-1; | |
169 | struct calling_interface_structure *table = | |
170 | container_of(dm, struct calling_interface_structure, header); | |
171 | ||
172 | /* 4 bytes of table header, plus 7 bytes of Dell header, plus at least | |
173 | 6 bytes of entry */ | |
174 | ||
175 | if (dm->length < 17) | |
176 | return; | |
177 | ||
178 | da_command_address = table->cmdIOAddress; | |
179 | da_command_code = table->cmdIOCode; | |
180 | ||
181 | da_tokens = krealloc(da_tokens, (da_num_tokens + tokens) * | |
182 | sizeof(struct calling_interface_token), | |
183 | GFP_KERNEL); | |
184 | ||
185 | if (!da_tokens) | |
186 | return; | |
187 | ||
188 | memcpy(da_tokens+da_num_tokens, table->tokens, | |
189 | sizeof(struct calling_interface_token) * tokens); | |
190 | ||
191 | da_num_tokens += tokens; | |
192 | } | |
193 | ||
4788df4c | 194 | static void __init find_tokens(const struct dmi_header *dm, void *dummy) |
ad8f07cc MG |
195 | { |
196 | switch (dm->type) { | |
197 | case 0xd4: /* Indexed IO */ | |
198 | break; | |
199 | case 0xd5: /* Protected Area Type 1 */ | |
200 | break; | |
201 | case 0xd6: /* Protected Area Type 2 */ | |
202 | break; | |
203 | case 0xda: /* Calling interface */ | |
204 | parse_da_table(dm); | |
205 | break; | |
206 | } | |
207 | } | |
208 | ||
209 | static int find_token_location(int tokenid) | |
210 | { | |
211 | int i; | |
212 | for (i = 0; i < da_num_tokens; i++) { | |
213 | if (da_tokens[i].tokenID == tokenid) | |
214 | return da_tokens[i].location; | |
215 | } | |
216 | ||
217 | return -1; | |
218 | } | |
219 | ||
220 | static struct calling_interface_buffer * | |
221 | dell_send_request(struct calling_interface_buffer *buffer, int class, | |
222 | int select) | |
223 | { | |
224 | struct smi_cmd command; | |
225 | ||
226 | command.magic = SMI_CMD_MAGIC; | |
227 | command.command_address = da_command_address; | |
228 | command.command_code = da_command_code; | |
229 | command.ebx = virt_to_phys(buffer); | |
230 | command.ecx = 0x42534931; | |
231 | ||
232 | buffer->class = class; | |
233 | buffer->select = select; | |
234 | ||
235 | dcdbas_smi_request(&command); | |
236 | ||
237 | return buffer; | |
238 | } | |
239 | ||
240 | /* Derived from information in DellWirelessCtl.cpp: | |
241 | Class 17, select 11 is radio control. It returns an array of 32-bit values. | |
242 | ||
c6760ac4 MG |
243 | Input byte 0 = 0: Wireless information |
244 | ||
ad8f07cc MG |
245 | result[0]: return code |
246 | result[1]: | |
247 | Bit 0: Hardware switch supported | |
248 | Bit 1: Wifi locator supported | |
249 | Bit 2: Wifi is supported | |
250 | Bit 3: Bluetooth is supported | |
251 | Bit 4: WWAN is supported | |
252 | Bit 5: Wireless keyboard supported | |
253 | Bits 6-7: Reserved | |
254 | Bit 8: Wifi is installed | |
255 | Bit 9: Bluetooth is installed | |
256 | Bit 10: WWAN is installed | |
257 | Bits 11-15: Reserved | |
258 | Bit 16: Hardware switch is on | |
259 | Bit 17: Wifi is blocked | |
260 | Bit 18: Bluetooth is blocked | |
261 | Bit 19: WWAN is blocked | |
262 | Bits 20-31: Reserved | |
263 | result[2]: NVRAM size in bytes | |
264 | result[3]: NVRAM format version number | |
c6760ac4 MG |
265 | |
266 | Input byte 0 = 2: Wireless switch configuration | |
267 | result[0]: return code | |
268 | result[1]: | |
269 | Bit 0: Wifi controlled by switch | |
270 | Bit 1: Bluetooth controlled by switch | |
271 | Bit 2: WWAN controlled by switch | |
272 | Bits 3-6: Reserved | |
273 | Bit 7: Wireless switch config locked | |
274 | Bit 8: Wifi locator enabled | |
275 | Bits 9-14: Reserved | |
276 | Bit 15: Wifi locator setting locked | |
277 | Bits 16-31: Reserved | |
ad8f07cc MG |
278 | */ |
279 | ||
19d337df | 280 | static int dell_rfkill_set(void *data, bool blocked) |
ad8f07cc | 281 | { |
624f0de4 | 282 | int disable = blocked ? 1 : 0; |
19d337df | 283 | unsigned long radio = (unsigned long)data; |
c6760ac4 | 284 | int hwswitch_bit = (unsigned long)data - 1; |
116ee77b | 285 | int ret = 0; |
ad8f07cc | 286 | |
116ee77b SH |
287 | get_buffer(); |
288 | dell_send_request(buffer, 17, 11); | |
ec1722a2 | 289 | |
c6760ac4 MG |
290 | /* If the hardware switch controls this radio, and the hardware |
291 | switch is disabled, don't allow changing the software state */ | |
292 | if ((hwswitch_state & BIT(hwswitch_bit)) && | |
293 | !(buffer->output[1] & BIT(16))) { | |
116ee77b SH |
294 | ret = -EINVAL; |
295 | goto out; | |
296 | } | |
ad8f07cc | 297 | |
116ee77b SH |
298 | buffer->input[0] = (1 | (radio<<8) | (disable << 16)); |
299 | dell_send_request(buffer, 17, 11); | |
300 | ||
301 | out: | |
302 | release_buffer(); | |
303 | return ret; | |
ad8f07cc MG |
304 | } |
305 | ||
19d337df | 306 | static void dell_rfkill_query(struct rfkill *rfkill, void *data) |
ad8f07cc | 307 | { |
ad8f07cc | 308 | int status; |
19d337df | 309 | int bit = (unsigned long)data + 16; |
c6760ac4 | 310 | int hwswitch_bit = (unsigned long)data - 1; |
ad8f07cc | 311 | |
116ee77b SH |
312 | get_buffer(); |
313 | dell_send_request(buffer, 17, 11); | |
314 | status = buffer->output[1]; | |
315 | release_buffer(); | |
ad8f07cc | 316 | |
e1fbf346 | 317 | rfkill_set_sw_state(rfkill, !!(status & BIT(bit))); |
c6760ac4 MG |
318 | |
319 | if (hwswitch_state & (BIT(hwswitch_bit))) | |
320 | rfkill_set_hw_state(rfkill, !(status & BIT(16))); | |
ad8f07cc MG |
321 | } |
322 | ||
19d337df JB |
323 | static const struct rfkill_ops dell_rfkill_ops = { |
324 | .set_block = dell_rfkill_set, | |
325 | .query = dell_rfkill_query, | |
326 | }; | |
ad8f07cc | 327 | |
814cb8ad MG |
328 | static void dell_update_rfkill(struct work_struct *ignored) |
329 | { | |
330 | if (wifi_rfkill) | |
331 | dell_rfkill_query(wifi_rfkill, (void *)1); | |
332 | if (bluetooth_rfkill) | |
333 | dell_rfkill_query(bluetooth_rfkill, (void *)2); | |
334 | if (wwan_rfkill) | |
335 | dell_rfkill_query(wwan_rfkill, (void *)3); | |
336 | } | |
337 | static DECLARE_DELAYED_WORK(dell_rfkill_work, dell_update_rfkill); | |
338 | ||
339 | ||
4788df4c | 340 | static int __init dell_setup_rfkill(void) |
ad8f07cc | 341 | { |
ad8f07cc MG |
342 | int status; |
343 | int ret; | |
344 | ||
e5fefd0c ML |
345 | if (dmi_check_system(dell_blacklist)) { |
346 | printk(KERN_INFO "dell-laptop: Blacklisted hardware detected - " | |
347 | "not enabling rfkill\n"); | |
348 | return 0; | |
349 | } | |
350 | ||
116ee77b SH |
351 | get_buffer(); |
352 | dell_send_request(buffer, 17, 11); | |
353 | status = buffer->output[1]; | |
c6760ac4 MG |
354 | buffer->input[0] = 0x2; |
355 | dell_send_request(buffer, 17, 11); | |
356 | hwswitch_state = buffer->output[1]; | |
116ee77b | 357 | release_buffer(); |
ad8f07cc MG |
358 | |
359 | if ((status & (1<<2|1<<8)) == (1<<2|1<<8)) { | |
ada3248a AJ |
360 | wifi_rfkill = rfkill_alloc("dell-wifi", &platform_device->dev, |
361 | RFKILL_TYPE_WLAN, | |
19d337df JB |
362 | &dell_rfkill_ops, (void *) 1); |
363 | if (!wifi_rfkill) { | |
364 | ret = -ENOMEM; | |
ad8f07cc | 365 | goto err_wifi; |
19d337df | 366 | } |
ad8f07cc MG |
367 | ret = rfkill_register(wifi_rfkill); |
368 | if (ret) | |
369 | goto err_wifi; | |
370 | } | |
371 | ||
372 | if ((status & (1<<3|1<<9)) == (1<<3|1<<9)) { | |
ada3248a AJ |
373 | bluetooth_rfkill = rfkill_alloc("dell-bluetooth", |
374 | &platform_device->dev, | |
19d337df JB |
375 | RFKILL_TYPE_BLUETOOTH, |
376 | &dell_rfkill_ops, (void *) 2); | |
377 | if (!bluetooth_rfkill) { | |
378 | ret = -ENOMEM; | |
ad8f07cc | 379 | goto err_bluetooth; |
19d337df | 380 | } |
ad8f07cc MG |
381 | ret = rfkill_register(bluetooth_rfkill); |
382 | if (ret) | |
383 | goto err_bluetooth; | |
384 | } | |
385 | ||
386 | if ((status & (1<<4|1<<10)) == (1<<4|1<<10)) { | |
ada3248a AJ |
387 | wwan_rfkill = rfkill_alloc("dell-wwan", |
388 | &platform_device->dev, | |
389 | RFKILL_TYPE_WWAN, | |
19d337df JB |
390 | &dell_rfkill_ops, (void *) 3); |
391 | if (!wwan_rfkill) { | |
392 | ret = -ENOMEM; | |
ad8f07cc | 393 | goto err_wwan; |
19d337df | 394 | } |
ad8f07cc MG |
395 | ret = rfkill_register(wwan_rfkill); |
396 | if (ret) | |
397 | goto err_wwan; | |
398 | } | |
399 | ||
400 | return 0; | |
401 | err_wwan: | |
19d337df JB |
402 | rfkill_destroy(wwan_rfkill); |
403 | if (bluetooth_rfkill) | |
ad8f07cc | 404 | rfkill_unregister(bluetooth_rfkill); |
ad8f07cc | 405 | err_bluetooth: |
19d337df JB |
406 | rfkill_destroy(bluetooth_rfkill); |
407 | if (wifi_rfkill) | |
ad8f07cc | 408 | rfkill_unregister(wifi_rfkill); |
ad8f07cc | 409 | err_wifi: |
19d337df | 410 | rfkill_destroy(wifi_rfkill); |
ad8f07cc MG |
411 | |
412 | return ret; | |
413 | } | |
414 | ||
4311bb23 AJ |
415 | static void dell_cleanup_rfkill(void) |
416 | { | |
417 | if (wifi_rfkill) { | |
418 | rfkill_unregister(wifi_rfkill); | |
419 | rfkill_destroy(wifi_rfkill); | |
420 | } | |
421 | if (bluetooth_rfkill) { | |
422 | rfkill_unregister(bluetooth_rfkill); | |
423 | rfkill_destroy(bluetooth_rfkill); | |
424 | } | |
425 | if (wwan_rfkill) { | |
426 | rfkill_unregister(wwan_rfkill); | |
427 | rfkill_destroy(wwan_rfkill); | |
428 | } | |
429 | } | |
430 | ||
ad8f07cc MG |
431 | static int dell_send_intensity(struct backlight_device *bd) |
432 | { | |
116ee77b | 433 | int ret = 0; |
ad8f07cc | 434 | |
116ee77b SH |
435 | get_buffer(); |
436 | buffer->input[0] = find_token_location(BRIGHTNESS_TOKEN); | |
437 | buffer->input[1] = bd->props.brightness; | |
ad8f07cc | 438 | |
116ee77b SH |
439 | if (buffer->input[0] == -1) { |
440 | ret = -ENODEV; | |
441 | goto out; | |
442 | } | |
ad8f07cc MG |
443 | |
444 | if (power_supply_is_system_supplied() > 0) | |
116ee77b | 445 | dell_send_request(buffer, 1, 2); |
ad8f07cc | 446 | else |
116ee77b | 447 | dell_send_request(buffer, 1, 1); |
ad8f07cc | 448 | |
116ee77b SH |
449 | out: |
450 | release_buffer(); | |
ad8f07cc MG |
451 | return 0; |
452 | } | |
453 | ||
454 | static int dell_get_intensity(struct backlight_device *bd) | |
455 | { | |
116ee77b | 456 | int ret = 0; |
ad8f07cc | 457 | |
116ee77b SH |
458 | get_buffer(); |
459 | buffer->input[0] = find_token_location(BRIGHTNESS_TOKEN); | |
ad8f07cc | 460 | |
116ee77b SH |
461 | if (buffer->input[0] == -1) { |
462 | ret = -ENODEV; | |
463 | goto out; | |
464 | } | |
ad8f07cc MG |
465 | |
466 | if (power_supply_is_system_supplied() > 0) | |
116ee77b | 467 | dell_send_request(buffer, 0, 2); |
ad8f07cc | 468 | else |
116ee77b | 469 | dell_send_request(buffer, 0, 1); |
ad8f07cc | 470 | |
116ee77b SH |
471 | out: |
472 | release_buffer(); | |
473 | if (ret) | |
474 | return ret; | |
475 | return buffer->output[1]; | |
ad8f07cc MG |
476 | } |
477 | ||
478 | static struct backlight_ops dell_ops = { | |
479 | .get_brightness = dell_get_intensity, | |
480 | .update_status = dell_send_intensity, | |
481 | }; | |
482 | ||
4519169b | 483 | static bool dell_laptop_i8042_filter(unsigned char data, unsigned char str, |
814cb8ad MG |
484 | struct serio *port) |
485 | { | |
486 | static bool extended; | |
487 | ||
488 | if (str & 0x20) | |
489 | return false; | |
490 | ||
491 | if (unlikely(data == 0xe0)) { | |
492 | extended = true; | |
493 | return false; | |
494 | } else if (unlikely(extended)) { | |
495 | switch (data) { | |
496 | case 0x8: | |
497 | schedule_delayed_work(&dell_rfkill_work, | |
498 | round_jiffies_relative(HZ)); | |
499 | break; | |
500 | } | |
501 | extended = false; | |
502 | } | |
503 | ||
504 | return false; | |
505 | } | |
506 | ||
ad8f07cc MG |
507 | static int __init dell_init(void) |
508 | { | |
ad8f07cc MG |
509 | int max_intensity = 0; |
510 | int ret; | |
511 | ||
512 | if (!dmi_check_system(dell_device_table)) | |
513 | return -ENODEV; | |
514 | ||
e7a19c56 | 515 | dmi_walk(find_tokens, NULL); |
ad8f07cc MG |
516 | |
517 | if (!da_tokens) { | |
518 | printk(KERN_INFO "dell-laptop: Unable to find dmi tokens\n"); | |
519 | return -ENODEV; | |
520 | } | |
521 | ||
ada3248a AJ |
522 | ret = platform_driver_register(&platform_driver); |
523 | if (ret) | |
524 | goto fail_platform_driver; | |
525 | platform_device = platform_device_alloc("dell-laptop", -1); | |
526 | if (!platform_device) { | |
527 | ret = -ENOMEM; | |
528 | goto fail_platform_device1; | |
529 | } | |
530 | ret = platform_device_add(platform_device); | |
531 | if (ret) | |
532 | goto fail_platform_device2; | |
533 | ||
116ee77b SH |
534 | /* |
535 | * Allocate buffer below 4GB for SMI data--only 32-bit physical addr | |
536 | * is passed to SMI handler. | |
537 | */ | |
538 | bufferpage = alloc_page(GFP_KERNEL | GFP_DMA32); | |
539 | ||
540 | if (!bufferpage) | |
541 | goto fail_buffer; | |
542 | buffer = page_address(bufferpage); | |
543 | mutex_init(&buffer_mutex); | |
544 | ||
ad8f07cc MG |
545 | ret = dell_setup_rfkill(); |
546 | ||
547 | if (ret) { | |
548 | printk(KERN_WARNING "dell-laptop: Unable to setup rfkill\n"); | |
71e9dc73 | 549 | goto fail_rfkill; |
ad8f07cc MG |
550 | } |
551 | ||
814cb8ad MG |
552 | ret = i8042_install_filter(dell_laptop_i8042_filter); |
553 | if (ret) { | |
554 | printk(KERN_WARNING | |
555 | "dell-laptop: Unable to install key filter\n"); | |
556 | goto fail_filter; | |
557 | } | |
558 | ||
ad8f07cc MG |
559 | #ifdef CONFIG_ACPI |
560 | /* In the event of an ACPI backlight being available, don't | |
561 | * register the platform controller. | |
562 | */ | |
563 | if (acpi_video_backlight_support()) | |
564 | return 0; | |
565 | #endif | |
566 | ||
116ee77b SH |
567 | get_buffer(); |
568 | buffer->input[0] = find_token_location(BRIGHTNESS_TOKEN); | |
569 | if (buffer->input[0] != -1) { | |
570 | dell_send_request(buffer, 0, 2); | |
571 | max_intensity = buffer->output[3]; | |
ad8f07cc | 572 | } |
116ee77b | 573 | release_buffer(); |
ad8f07cc MG |
574 | |
575 | if (max_intensity) { | |
a19a6ee6 MG |
576 | struct backlight_properties props; |
577 | memset(&props, 0, sizeof(struct backlight_properties)); | |
578 | props.max_brightness = max_intensity; | |
579 | dell_backlight_device = backlight_device_register("dell_backlight", | |
580 | &platform_device->dev, | |
581 | NULL, | |
582 | &dell_ops, | |
583 | &props); | |
ad8f07cc MG |
584 | |
585 | if (IS_ERR(dell_backlight_device)) { | |
586 | ret = PTR_ERR(dell_backlight_device); | |
587 | dell_backlight_device = NULL; | |
71e9dc73 | 588 | goto fail_backlight; |
ad8f07cc MG |
589 | } |
590 | ||
ad8f07cc MG |
591 | dell_backlight_device->props.brightness = |
592 | dell_get_intensity(dell_backlight_device); | |
593 | backlight_update_status(dell_backlight_device); | |
594 | } | |
595 | ||
596 | return 0; | |
71e9dc73 AJ |
597 | |
598 | fail_backlight: | |
814cb8ad | 599 | i8042_remove_filter(dell_laptop_i8042_filter); |
92e00e47 | 600 | cancel_delayed_work_sync(&dell_rfkill_work); |
814cb8ad | 601 | fail_filter: |
4311bb23 | 602 | dell_cleanup_rfkill(); |
71e9dc73 | 603 | fail_rfkill: |
116ee77b SH |
604 | free_page((unsigned long)bufferpage); |
605 | fail_buffer: | |
ada3248a AJ |
606 | platform_device_del(platform_device); |
607 | fail_platform_device2: | |
608 | platform_device_put(platform_device); | |
609 | fail_platform_device1: | |
610 | platform_driver_unregister(&platform_driver); | |
611 | fail_platform_driver: | |
ad8f07cc MG |
612 | kfree(da_tokens); |
613 | return ret; | |
614 | } | |
615 | ||
616 | static void __exit dell_exit(void) | |
617 | { | |
814cb8ad | 618 | i8042_remove_filter(dell_laptop_i8042_filter); |
92e00e47 | 619 | cancel_delayed_work_sync(&dell_rfkill_work); |
ad8f07cc | 620 | backlight_device_unregister(dell_backlight_device); |
4311bb23 | 621 | dell_cleanup_rfkill(); |
facd61d7 | 622 | if (platform_device) { |
92e00e47 | 623 | platform_device_unregister(platform_device); |
facd61d7 MG |
624 | platform_driver_unregister(&platform_driver); |
625 | } | |
e551260b | 626 | kfree(da_tokens); |
116ee77b | 627 | free_page((unsigned long)buffer); |
ad8f07cc MG |
628 | } |
629 | ||
630 | module_init(dell_init); | |
631 | module_exit(dell_exit); | |
632 | ||
633 | MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>"); | |
634 | MODULE_DESCRIPTION("Dell laptop driver"); | |
635 | MODULE_LICENSE("GPL"); | |
636 | MODULE_ALIAS("dmi:*svnDellInc.:*:ct8:*"); | |
410d44c7 | 637 | MODULE_ALIAS("dmi:*svnDellInc.:*:ct9:*"); |
cb6a7937 | 638 | MODULE_ALIAS("dmi:*svnDellComputerCorporation.:*:ct8:*"); |