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a46ad0f1 ML |
1 | /* |
2 | * Alienware AlienFX control | |
3 | * | |
4 | * Copyright (C) 2014 Dell Inc <mario_limonciello@dell.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | */ | |
17 | ||
18 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
19 | ||
20 | #include <linux/acpi.h> | |
21 | #include <linux/module.h> | |
22 | #include <linux/platform_device.h> | |
23 | #include <linux/dmi.h> | |
24 | #include <linux/acpi.h> | |
25 | #include <linux/leds.h> | |
26 | ||
27 | #define LEGACY_CONTROL_GUID "A90597CE-A997-11DA-B012-B622A1EF5492" | |
28 | #define LEGACY_POWER_CONTROL_GUID "A80593CE-A997-11DA-B012-B622A1EF5492" | |
29 | #define WMAX_CONTROL_GUID "A70591CE-A997-11DA-B012-B622A1EF5492" | |
30 | ||
31 | #define WMAX_METHOD_HDMI_SOURCE 0x1 | |
32 | #define WMAX_METHOD_HDMI_STATUS 0x2 | |
33 | #define WMAX_METHOD_BRIGHTNESS 0x3 | |
34 | #define WMAX_METHOD_ZONE_CONTROL 0x4 | |
bc2ef884 | 35 | #define WMAX_METHOD_HDMI_CABLE 0x5 |
a46ad0f1 ML |
36 | |
37 | MODULE_AUTHOR("Mario Limonciello <mario_limonciello@dell.com>"); | |
38 | MODULE_DESCRIPTION("Alienware special feature control"); | |
39 | MODULE_LICENSE("GPL"); | |
40 | MODULE_ALIAS("wmi:" LEGACY_CONTROL_GUID); | |
41 | MODULE_ALIAS("wmi:" WMAX_CONTROL_GUID); | |
42 | ||
43 | enum INTERFACE_FLAGS { | |
44 | LEGACY, | |
45 | WMAX, | |
46 | }; | |
47 | ||
48 | enum LEGACY_CONTROL_STATES { | |
49 | LEGACY_RUNNING = 1, | |
50 | LEGACY_BOOTING = 0, | |
51 | LEGACY_SUSPEND = 3, | |
52 | }; | |
53 | ||
54 | enum WMAX_CONTROL_STATES { | |
55 | WMAX_RUNNING = 0xFF, | |
56 | WMAX_BOOTING = 0, | |
57 | WMAX_SUSPEND = 3, | |
58 | }; | |
59 | ||
60 | struct quirk_entry { | |
61 | u8 num_zones; | |
fee4efd7 | 62 | u8 hdmi_mux; |
a46ad0f1 ML |
63 | }; |
64 | ||
65 | static struct quirk_entry *quirks; | |
66 | ||
67 | static struct quirk_entry quirk_unknown = { | |
68 | .num_zones = 2, | |
fee4efd7 | 69 | .hdmi_mux = 0, |
a46ad0f1 ML |
70 | }; |
71 | ||
72 | static struct quirk_entry quirk_x51_family = { | |
73 | .num_zones = 3, | |
fee4efd7 ML |
74 | .hdmi_mux = 0. |
75 | }; | |
76 | ||
77 | static struct quirk_entry quirk_asm100 = { | |
78 | .num_zones = 2, | |
79 | .hdmi_mux = 1, | |
a46ad0f1 ML |
80 | }; |
81 | ||
d997d88e | 82 | static int __init dmi_matched(const struct dmi_system_id *dmi) |
a46ad0f1 ML |
83 | { |
84 | quirks = dmi->driver_data; | |
85 | return 1; | |
86 | } | |
87 | ||
d997d88e | 88 | static const struct dmi_system_id alienware_quirks[] __initconst = { |
a46ad0f1 ML |
89 | { |
90 | .callback = dmi_matched, | |
91 | .ident = "Alienware X51 R1", | |
92 | .matches = { | |
93 | DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), | |
94 | DMI_MATCH(DMI_PRODUCT_NAME, "Alienware X51"), | |
95 | }, | |
96 | .driver_data = &quirk_x51_family, | |
97 | }, | |
98 | { | |
99 | .callback = dmi_matched, | |
100 | .ident = "Alienware X51 R2", | |
101 | .matches = { | |
102 | DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), | |
103 | DMI_MATCH(DMI_PRODUCT_NAME, "Alienware X51 R2"), | |
104 | }, | |
105 | .driver_data = &quirk_x51_family, | |
106 | }, | |
fee4efd7 ML |
107 | { |
108 | .callback = dmi_matched, | |
109 | .ident = "Alienware ASM100", | |
110 | .matches = { | |
111 | DMI_MATCH(DMI_SYS_VENDOR, "Alienware"), | |
112 | DMI_MATCH(DMI_PRODUCT_NAME, "ASM100"), | |
113 | }, | |
114 | .driver_data = &quirk_asm100, | |
115 | }, | |
a46ad0f1 ML |
116 | {} |
117 | }; | |
118 | ||
119 | struct color_platform { | |
120 | u8 blue; | |
121 | u8 green; | |
122 | u8 red; | |
123 | } __packed; | |
124 | ||
125 | struct platform_zone { | |
126 | u8 location; | |
127 | struct device_attribute *attr; | |
128 | struct color_platform colors; | |
129 | }; | |
130 | ||
131 | struct wmax_brightness_args { | |
132 | u32 led_mask; | |
133 | u32 percentage; | |
134 | }; | |
135 | ||
136 | struct hdmi_args { | |
137 | u8 arg; | |
138 | }; | |
139 | ||
140 | struct legacy_led_args { | |
141 | struct color_platform colors; | |
142 | u8 brightness; | |
143 | u8 state; | |
144 | } __packed; | |
145 | ||
146 | struct wmax_led_args { | |
147 | u32 led_mask; | |
148 | struct color_platform colors; | |
149 | u8 state; | |
150 | } __packed; | |
151 | ||
152 | static struct platform_device *platform_device; | |
153 | static struct device_attribute *zone_dev_attrs; | |
154 | static struct attribute **zone_attrs; | |
155 | static struct platform_zone *zone_data; | |
156 | ||
157 | static struct platform_driver platform_driver = { | |
158 | .driver = { | |
159 | .name = "alienware-wmi", | |
160 | .owner = THIS_MODULE, | |
161 | } | |
162 | }; | |
163 | ||
164 | static struct attribute_group zone_attribute_group = { | |
165 | .name = "rgb_zones", | |
166 | }; | |
167 | ||
168 | static u8 interface; | |
169 | static u8 lighting_control_state; | |
170 | static u8 global_brightness; | |
171 | ||
172 | /* | |
173 | * Helpers used for zone control | |
174 | */ | |
175 | static int parse_rgb(const char *buf, struct platform_zone *zone) | |
176 | { | |
177 | long unsigned int rgb; | |
178 | int ret; | |
179 | union color_union { | |
180 | struct color_platform cp; | |
181 | int package; | |
182 | } repackager; | |
183 | ||
184 | ret = kstrtoul(buf, 16, &rgb); | |
185 | if (ret) | |
186 | return ret; | |
187 | ||
188 | /* RGB triplet notation is 24-bit hexadecimal */ | |
189 | if (rgb > 0xFFFFFF) | |
190 | return -EINVAL; | |
191 | ||
192 | repackager.package = rgb & 0x0f0f0f0f; | |
193 | pr_debug("alienware-wmi: r: %d g:%d b: %d\n", | |
194 | repackager.cp.red, repackager.cp.green, repackager.cp.blue); | |
195 | zone->colors = repackager.cp; | |
196 | return 0; | |
197 | } | |
198 | ||
199 | static struct platform_zone *match_zone(struct device_attribute *attr) | |
200 | { | |
201 | int i; | |
202 | for (i = 0; i < quirks->num_zones; i++) { | |
203 | if ((struct device_attribute *)zone_data[i].attr == attr) { | |
204 | pr_debug("alienware-wmi: matched zone location: %d\n", | |
205 | zone_data[i].location); | |
206 | return &zone_data[i]; | |
207 | } | |
208 | } | |
209 | return NULL; | |
210 | } | |
211 | ||
212 | /* | |
213 | * Individual RGB zone control | |
214 | */ | |
215 | static int alienware_update_led(struct platform_zone *zone) | |
216 | { | |
217 | int method_id; | |
218 | acpi_status status; | |
219 | char *guid; | |
220 | struct acpi_buffer input; | |
221 | struct legacy_led_args legacy_args; | |
222 | struct wmax_led_args wmax_args; | |
223 | if (interface == WMAX) { | |
224 | wmax_args.led_mask = 1 << zone->location; | |
225 | wmax_args.colors = zone->colors; | |
226 | wmax_args.state = lighting_control_state; | |
227 | guid = WMAX_CONTROL_GUID; | |
228 | method_id = WMAX_METHOD_ZONE_CONTROL; | |
229 | ||
230 | input.length = (acpi_size) sizeof(wmax_args); | |
231 | input.pointer = &wmax_args; | |
232 | } else { | |
233 | legacy_args.colors = zone->colors; | |
234 | legacy_args.brightness = global_brightness; | |
235 | legacy_args.state = 0; | |
236 | if (lighting_control_state == LEGACY_BOOTING || | |
237 | lighting_control_state == LEGACY_SUSPEND) { | |
238 | guid = LEGACY_POWER_CONTROL_GUID; | |
239 | legacy_args.state = lighting_control_state; | |
240 | } else | |
241 | guid = LEGACY_CONTROL_GUID; | |
242 | method_id = zone->location + 1; | |
243 | ||
244 | input.length = (acpi_size) sizeof(legacy_args); | |
245 | input.pointer = &legacy_args; | |
246 | } | |
247 | pr_debug("alienware-wmi: guid %s method %d\n", guid, method_id); | |
248 | ||
249 | status = wmi_evaluate_method(guid, 1, method_id, &input, NULL); | |
250 | if (ACPI_FAILURE(status)) | |
251 | pr_err("alienware-wmi: zone set failure: %u\n", status); | |
252 | return ACPI_FAILURE(status); | |
253 | } | |
254 | ||
255 | static ssize_t zone_show(struct device *dev, struct device_attribute *attr, | |
256 | char *buf) | |
257 | { | |
258 | struct platform_zone *target_zone; | |
259 | target_zone = match_zone(attr); | |
260 | if (target_zone == NULL) | |
261 | return sprintf(buf, "red: -1, green: -1, blue: -1\n"); | |
262 | return sprintf(buf, "red: %d, green: %d, blue: %d\n", | |
263 | target_zone->colors.red, | |
264 | target_zone->colors.green, target_zone->colors.blue); | |
265 | ||
266 | } | |
267 | ||
268 | static ssize_t zone_set(struct device *dev, struct device_attribute *attr, | |
269 | const char *buf, size_t count) | |
270 | { | |
271 | struct platform_zone *target_zone; | |
272 | int ret; | |
273 | target_zone = match_zone(attr); | |
274 | if (target_zone == NULL) { | |
275 | pr_err("alienware-wmi: invalid target zone\n"); | |
276 | return 1; | |
277 | } | |
278 | ret = parse_rgb(buf, target_zone); | |
279 | if (ret) | |
280 | return ret; | |
281 | ret = alienware_update_led(target_zone); | |
282 | return ret ? ret : count; | |
283 | } | |
284 | ||
285 | /* | |
286 | * LED Brightness (Global) | |
287 | */ | |
288 | static int wmax_brightness(int brightness) | |
289 | { | |
290 | acpi_status status; | |
291 | struct acpi_buffer input; | |
292 | struct wmax_brightness_args args = { | |
293 | .led_mask = 0xFF, | |
294 | .percentage = brightness, | |
295 | }; | |
296 | input.length = (acpi_size) sizeof(args); | |
297 | input.pointer = &args; | |
298 | status = wmi_evaluate_method(WMAX_CONTROL_GUID, 1, | |
299 | WMAX_METHOD_BRIGHTNESS, &input, NULL); | |
300 | if (ACPI_FAILURE(status)) | |
301 | pr_err("alienware-wmi: brightness set failure: %u\n", status); | |
302 | return ACPI_FAILURE(status); | |
303 | } | |
304 | ||
305 | static void global_led_set(struct led_classdev *led_cdev, | |
306 | enum led_brightness brightness) | |
307 | { | |
308 | int ret; | |
309 | global_brightness = brightness; | |
310 | if (interface == WMAX) | |
311 | ret = wmax_brightness(brightness); | |
312 | else | |
313 | ret = alienware_update_led(&zone_data[0]); | |
314 | if (ret) | |
315 | pr_err("LED brightness update failed\n"); | |
316 | } | |
317 | ||
318 | static enum led_brightness global_led_get(struct led_classdev *led_cdev) | |
319 | { | |
320 | return global_brightness; | |
321 | } | |
322 | ||
323 | static struct led_classdev global_led = { | |
324 | .brightness_set = global_led_set, | |
325 | .brightness_get = global_led_get, | |
326 | .name = "alienware::global_brightness", | |
327 | }; | |
328 | ||
329 | /* | |
330 | * Lighting control state device attribute (Global) | |
331 | */ | |
332 | static ssize_t show_control_state(struct device *dev, | |
333 | struct device_attribute *attr, char *buf) | |
334 | { | |
335 | if (lighting_control_state == LEGACY_BOOTING) | |
336 | return scnprintf(buf, PAGE_SIZE, "[booting] running suspend\n"); | |
337 | else if (lighting_control_state == LEGACY_SUSPEND) | |
338 | return scnprintf(buf, PAGE_SIZE, "booting running [suspend]\n"); | |
339 | return scnprintf(buf, PAGE_SIZE, "booting [running] suspend\n"); | |
340 | } | |
341 | ||
342 | static ssize_t store_control_state(struct device *dev, | |
343 | struct device_attribute *attr, | |
344 | const char *buf, size_t count) | |
345 | { | |
346 | long unsigned int val; | |
347 | if (strcmp(buf, "booting\n") == 0) | |
348 | val = LEGACY_BOOTING; | |
349 | else if (strcmp(buf, "suspend\n") == 0) | |
350 | val = LEGACY_SUSPEND; | |
351 | else if (interface == LEGACY) | |
352 | val = LEGACY_RUNNING; | |
353 | else | |
354 | val = WMAX_RUNNING; | |
355 | lighting_control_state = val; | |
356 | pr_debug("alienware-wmi: updated control state to %d\n", | |
357 | lighting_control_state); | |
358 | return count; | |
359 | } | |
360 | ||
361 | static DEVICE_ATTR(lighting_control_state, 0644, show_control_state, | |
362 | store_control_state); | |
363 | ||
364 | static int alienware_zone_init(struct platform_device *dev) | |
365 | { | |
366 | int i; | |
367 | char buffer[10]; | |
368 | char *name; | |
369 | ||
370 | if (interface == WMAX) { | |
a46ad0f1 ML |
371 | lighting_control_state = WMAX_RUNNING; |
372 | } else if (interface == LEGACY) { | |
a46ad0f1 ML |
373 | lighting_control_state = LEGACY_RUNNING; |
374 | } | |
b998680e | 375 | global_led.max_brightness = 0x0F; |
a46ad0f1 ML |
376 | global_brightness = global_led.max_brightness; |
377 | ||
378 | /* | |
379 | * - zone_dev_attrs num_zones + 1 is for individual zones and then | |
380 | * null terminated | |
381 | * - zone_attrs num_zones + 2 is for all attrs in zone_dev_attrs + | |
382 | * the lighting control + null terminated | |
383 | * - zone_data num_zones is for the distinct zones | |
384 | */ | |
385 | zone_dev_attrs = | |
386 | kzalloc(sizeof(struct device_attribute) * (quirks->num_zones + 1), | |
387 | GFP_KERNEL); | |
562c7cec ML |
388 | if (!zone_dev_attrs) |
389 | return -ENOMEM; | |
390 | ||
a46ad0f1 ML |
391 | zone_attrs = |
392 | kzalloc(sizeof(struct attribute *) * (quirks->num_zones + 2), | |
393 | GFP_KERNEL); | |
562c7cec ML |
394 | if (!zone_attrs) |
395 | return -ENOMEM; | |
396 | ||
a46ad0f1 ML |
397 | zone_data = |
398 | kzalloc(sizeof(struct platform_zone) * (quirks->num_zones), | |
399 | GFP_KERNEL); | |
562c7cec ML |
400 | if (!zone_data) |
401 | return -ENOMEM; | |
a46ad0f1 ML |
402 | |
403 | for (i = 0; i < quirks->num_zones; i++) { | |
404 | sprintf(buffer, "zone%02X", i); | |
405 | name = kstrdup(buffer, GFP_KERNEL); | |
406 | if (name == NULL) | |
407 | return 1; | |
408 | sysfs_attr_init(&zone_dev_attrs[i].attr); | |
409 | zone_dev_attrs[i].attr.name = name; | |
410 | zone_dev_attrs[i].attr.mode = 0644; | |
411 | zone_dev_attrs[i].show = zone_show; | |
412 | zone_dev_attrs[i].store = zone_set; | |
413 | zone_data[i].location = i; | |
414 | zone_attrs[i] = &zone_dev_attrs[i].attr; | |
415 | zone_data[i].attr = &zone_dev_attrs[i]; | |
416 | } | |
417 | zone_attrs[quirks->num_zones] = &dev_attr_lighting_control_state.attr; | |
418 | zone_attribute_group.attrs = zone_attrs; | |
419 | ||
420 | led_classdev_register(&dev->dev, &global_led); | |
421 | ||
422 | return sysfs_create_group(&dev->dev.kobj, &zone_attribute_group); | |
423 | } | |
424 | ||
425 | static void alienware_zone_exit(struct platform_device *dev) | |
426 | { | |
427 | sysfs_remove_group(&dev->dev.kobj, &zone_attribute_group); | |
428 | led_classdev_unregister(&global_led); | |
429 | if (zone_dev_attrs) { | |
430 | int i; | |
431 | for (i = 0; i < quirks->num_zones; i++) | |
432 | kfree(zone_dev_attrs[i].attr.name); | |
433 | } | |
434 | kfree(zone_dev_attrs); | |
435 | kfree(zone_data); | |
436 | kfree(zone_attrs); | |
437 | } | |
438 | ||
439 | /* | |
440 | The HDMI mux sysfs node indicates the status of the HDMI input mux. | |
441 | It can toggle between standard system GPU output and HDMI input. | |
442 | */ | |
bc2ef884 ML |
443 | static acpi_status alienware_hdmi_command(struct hdmi_args *in_args, |
444 | u32 command, int *out_data) | |
a46ad0f1 ML |
445 | { |
446 | acpi_status status; | |
a46ad0f1 | 447 | union acpi_object *obj; |
bc2ef884 ML |
448 | struct acpi_buffer input; |
449 | struct acpi_buffer output; | |
450 | ||
451 | input.length = (acpi_size) sizeof(*in_args); | |
452 | input.pointer = in_args; | |
453 | if (out_data != NULL) { | |
454 | output.length = ACPI_ALLOCATE_BUFFER; | |
455 | output.pointer = NULL; | |
456 | status = wmi_evaluate_method(WMAX_CONTROL_GUID, 1, | |
457 | command, &input, &output); | |
458 | } else | |
459 | status = wmi_evaluate_method(WMAX_CONTROL_GUID, 1, | |
460 | command, &input, NULL); | |
461 | ||
462 | if (ACPI_SUCCESS(status) && out_data != NULL) { | |
463 | obj = (union acpi_object *)output.pointer; | |
464 | if (obj && obj->type == ACPI_TYPE_INTEGER) | |
465 | *out_data = (u32) obj->integer.value; | |
466 | } | |
467 | return status; | |
468 | ||
469 | } | |
470 | ||
471 | static ssize_t show_hdmi_cable(struct device *dev, | |
472 | struct device_attribute *attr, char *buf) | |
473 | { | |
474 | acpi_status status; | |
475 | u32 out_data; | |
a46ad0f1 ML |
476 | struct hdmi_args in_args = { |
477 | .arg = 0, | |
478 | }; | |
bc2ef884 ML |
479 | status = |
480 | alienware_hdmi_command(&in_args, WMAX_METHOD_HDMI_CABLE, | |
481 | (u32 *) &out_data); | |
482 | if (ACPI_SUCCESS(status)) { | |
483 | if (out_data == 0) | |
484 | return scnprintf(buf, PAGE_SIZE, | |
485 | "[unconnected] connected unknown\n"); | |
486 | else if (out_data == 1) | |
487 | return scnprintf(buf, PAGE_SIZE, | |
488 | "unconnected [connected] unknown\n"); | |
489 | } | |
490 | pr_err("alienware-wmi: unknown HDMI cable status: %d\n", status); | |
491 | return scnprintf(buf, PAGE_SIZE, "unconnected connected [unknown]\n"); | |
492 | } | |
493 | ||
494 | static ssize_t show_hdmi_source(struct device *dev, | |
495 | struct device_attribute *attr, char *buf) | |
496 | { | |
497 | acpi_status status; | |
498 | u32 out_data; | |
499 | struct hdmi_args in_args = { | |
500 | .arg = 0, | |
501 | }; | |
502 | status = | |
503 | alienware_hdmi_command(&in_args, WMAX_METHOD_HDMI_STATUS, | |
504 | (u32 *) &out_data); | |
a46ad0f1 ML |
505 | |
506 | if (ACPI_SUCCESS(status)) { | |
bc2ef884 | 507 | if (out_data == 1) |
a46ad0f1 ML |
508 | return scnprintf(buf, PAGE_SIZE, |
509 | "[input] gpu unknown\n"); | |
bc2ef884 | 510 | else if (out_data == 2) |
a46ad0f1 ML |
511 | return scnprintf(buf, PAGE_SIZE, |
512 | "input [gpu] unknown\n"); | |
513 | } | |
bc2ef884 | 514 | pr_err("alienware-wmi: unknown HDMI source status: %d\n", out_data); |
a46ad0f1 ML |
515 | return scnprintf(buf, PAGE_SIZE, "input gpu [unknown]\n"); |
516 | } | |
517 | ||
bc2ef884 ML |
518 | static ssize_t toggle_hdmi_source(struct device *dev, |
519 | struct device_attribute *attr, | |
520 | const char *buf, size_t count) | |
a46ad0f1 | 521 | { |
a46ad0f1 ML |
522 | acpi_status status; |
523 | struct hdmi_args args; | |
524 | if (strcmp(buf, "gpu\n") == 0) | |
525 | args.arg = 1; | |
526 | else if (strcmp(buf, "input\n") == 0) | |
527 | args.arg = 2; | |
528 | else | |
529 | args.arg = 3; | |
530 | pr_debug("alienware-wmi: setting hdmi to %d : %s", args.arg, buf); | |
bc2ef884 ML |
531 | |
532 | status = alienware_hdmi_command(&args, WMAX_METHOD_HDMI_SOURCE, NULL); | |
533 | ||
a46ad0f1 ML |
534 | if (ACPI_FAILURE(status)) |
535 | pr_err("alienware-wmi: HDMI toggle failed: results: %u\n", | |
536 | status); | |
537 | return count; | |
538 | } | |
539 | ||
bc2ef884 ML |
540 | static DEVICE_ATTR(cable, S_IRUGO, show_hdmi_cable, NULL); |
541 | static DEVICE_ATTR(source, S_IRUGO | S_IWUSR, show_hdmi_source, | |
542 | toggle_hdmi_source); | |
543 | ||
544 | static struct attribute *hdmi_attrs[] = { | |
545 | &dev_attr_cable.attr, | |
546 | &dev_attr_source.attr, | |
547 | NULL, | |
548 | }; | |
a46ad0f1 | 549 | |
bc2ef884 ML |
550 | static struct attribute_group hdmi_attribute_group = { |
551 | .name = "hdmi", | |
552 | .attrs = hdmi_attrs, | |
553 | }; | |
554 | ||
555 | static void remove_hdmi(struct platform_device *dev) | |
a46ad0f1 | 556 | { |
fee4efd7 ML |
557 | if (quirks->hdmi_mux > 0) |
558 | sysfs_remove_group(&dev->dev.kobj, &hdmi_attribute_group); | |
a46ad0f1 ML |
559 | } |
560 | ||
bc2ef884 | 561 | static int create_hdmi(struct platform_device *dev) |
a46ad0f1 | 562 | { |
bc2ef884 ML |
563 | int ret; |
564 | ||
565 | ret = sysfs_create_group(&dev->dev.kobj, &hdmi_attribute_group); | |
a46ad0f1 ML |
566 | if (ret) |
567 | goto error_create_hdmi; | |
568 | return 0; | |
569 | ||
570 | error_create_hdmi: | |
bc2ef884 | 571 | remove_hdmi(dev); |
a46ad0f1 ML |
572 | return ret; |
573 | } | |
574 | ||
575 | static int __init alienware_wmi_init(void) | |
576 | { | |
577 | int ret; | |
578 | ||
579 | if (wmi_has_guid(LEGACY_CONTROL_GUID)) | |
580 | interface = LEGACY; | |
581 | else if (wmi_has_guid(WMAX_CONTROL_GUID)) | |
582 | interface = WMAX; | |
583 | else { | |
584 | pr_warn("alienware-wmi: No known WMI GUID found\n"); | |
585 | return -ENODEV; | |
586 | } | |
587 | ||
588 | dmi_check_system(alienware_quirks); | |
589 | if (quirks == NULL) | |
590 | quirks = &quirk_unknown; | |
591 | ||
592 | ret = platform_driver_register(&platform_driver); | |
593 | if (ret) | |
594 | goto fail_platform_driver; | |
595 | platform_device = platform_device_alloc("alienware-wmi", -1); | |
596 | if (!platform_device) { | |
597 | ret = -ENOMEM; | |
598 | goto fail_platform_device1; | |
599 | } | |
600 | ret = platform_device_add(platform_device); | |
601 | if (ret) | |
602 | goto fail_platform_device2; | |
603 | ||
fee4efd7 | 604 | if (quirks->hdmi_mux > 0) { |
bc2ef884 | 605 | ret = create_hdmi(platform_device); |
a46ad0f1 ML |
606 | if (ret) |
607 | goto fail_prep_hdmi; | |
608 | } | |
609 | ||
610 | ret = alienware_zone_init(platform_device); | |
611 | if (ret) | |
612 | goto fail_prep_zones; | |
613 | ||
614 | return 0; | |
615 | ||
616 | fail_prep_zones: | |
617 | alienware_zone_exit(platform_device); | |
618 | fail_prep_hdmi: | |
619 | platform_device_del(platform_device); | |
620 | fail_platform_device2: | |
621 | platform_device_put(platform_device); | |
622 | fail_platform_device1: | |
623 | platform_driver_unregister(&platform_driver); | |
624 | fail_platform_driver: | |
625 | return ret; | |
626 | } | |
627 | ||
628 | module_init(alienware_wmi_init); | |
629 | ||
630 | static void __exit alienware_wmi_exit(void) | |
631 | { | |
a46ad0f1 | 632 | if (platform_device) { |
562c7cec ML |
633 | alienware_zone_exit(platform_device); |
634 | remove_hdmi(platform_device); | |
a46ad0f1 ML |
635 | platform_device_unregister(platform_device); |
636 | platform_driver_unregister(&platform_driver); | |
637 | } | |
638 | } | |
639 | ||
640 | module_exit(alienware_wmi_exit); |