Commit | Line | Data |
---|---|---|
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", | |
a46ad0f1 ML |
160 | } |
161 | }; | |
162 | ||
163 | static struct attribute_group zone_attribute_group = { | |
164 | .name = "rgb_zones", | |
165 | }; | |
166 | ||
167 | static u8 interface; | |
168 | static u8 lighting_control_state; | |
169 | static u8 global_brightness; | |
170 | ||
171 | /* | |
172 | * Helpers used for zone control | |
173 | */ | |
174 | static int parse_rgb(const char *buf, struct platform_zone *zone) | |
175 | { | |
176 | long unsigned int rgb; | |
177 | int ret; | |
178 | union color_union { | |
179 | struct color_platform cp; | |
180 | int package; | |
181 | } repackager; | |
182 | ||
183 | ret = kstrtoul(buf, 16, &rgb); | |
184 | if (ret) | |
185 | return ret; | |
186 | ||
187 | /* RGB triplet notation is 24-bit hexadecimal */ | |
188 | if (rgb > 0xFFFFFF) | |
189 | return -EINVAL; | |
190 | ||
191 | repackager.package = rgb & 0x0f0f0f0f; | |
192 | pr_debug("alienware-wmi: r: %d g:%d b: %d\n", | |
193 | repackager.cp.red, repackager.cp.green, repackager.cp.blue); | |
194 | zone->colors = repackager.cp; | |
195 | return 0; | |
196 | } | |
197 | ||
198 | static struct platform_zone *match_zone(struct device_attribute *attr) | |
199 | { | |
200 | int i; | |
201 | for (i = 0; i < quirks->num_zones; i++) { | |
202 | if ((struct device_attribute *)zone_data[i].attr == attr) { | |
203 | pr_debug("alienware-wmi: matched zone location: %d\n", | |
204 | zone_data[i].location); | |
205 | return &zone_data[i]; | |
206 | } | |
207 | } | |
208 | return NULL; | |
209 | } | |
210 | ||
211 | /* | |
212 | * Individual RGB zone control | |
213 | */ | |
214 | static int alienware_update_led(struct platform_zone *zone) | |
215 | { | |
216 | int method_id; | |
217 | acpi_status status; | |
218 | char *guid; | |
219 | struct acpi_buffer input; | |
220 | struct legacy_led_args legacy_args; | |
221 | struct wmax_led_args wmax_args; | |
222 | if (interface == WMAX) { | |
223 | wmax_args.led_mask = 1 << zone->location; | |
224 | wmax_args.colors = zone->colors; | |
225 | wmax_args.state = lighting_control_state; | |
226 | guid = WMAX_CONTROL_GUID; | |
227 | method_id = WMAX_METHOD_ZONE_CONTROL; | |
228 | ||
229 | input.length = (acpi_size) sizeof(wmax_args); | |
230 | input.pointer = &wmax_args; | |
231 | } else { | |
232 | legacy_args.colors = zone->colors; | |
233 | legacy_args.brightness = global_brightness; | |
234 | legacy_args.state = 0; | |
235 | if (lighting_control_state == LEGACY_BOOTING || | |
236 | lighting_control_state == LEGACY_SUSPEND) { | |
237 | guid = LEGACY_POWER_CONTROL_GUID; | |
238 | legacy_args.state = lighting_control_state; | |
239 | } else | |
240 | guid = LEGACY_CONTROL_GUID; | |
241 | method_id = zone->location + 1; | |
242 | ||
243 | input.length = (acpi_size) sizeof(legacy_args); | |
244 | input.pointer = &legacy_args; | |
245 | } | |
246 | pr_debug("alienware-wmi: guid %s method %d\n", guid, method_id); | |
247 | ||
248 | status = wmi_evaluate_method(guid, 1, method_id, &input, NULL); | |
249 | if (ACPI_FAILURE(status)) | |
250 | pr_err("alienware-wmi: zone set failure: %u\n", status); | |
251 | return ACPI_FAILURE(status); | |
252 | } | |
253 | ||
254 | static ssize_t zone_show(struct device *dev, struct device_attribute *attr, | |
255 | char *buf) | |
256 | { | |
257 | struct platform_zone *target_zone; | |
258 | target_zone = match_zone(attr); | |
259 | if (target_zone == NULL) | |
260 | return sprintf(buf, "red: -1, green: -1, blue: -1\n"); | |
261 | return sprintf(buf, "red: %d, green: %d, blue: %d\n", | |
262 | target_zone->colors.red, | |
263 | target_zone->colors.green, target_zone->colors.blue); | |
264 | ||
265 | } | |
266 | ||
267 | static ssize_t zone_set(struct device *dev, struct device_attribute *attr, | |
268 | const char *buf, size_t count) | |
269 | { | |
270 | struct platform_zone *target_zone; | |
271 | int ret; | |
272 | target_zone = match_zone(attr); | |
273 | if (target_zone == NULL) { | |
274 | pr_err("alienware-wmi: invalid target zone\n"); | |
275 | return 1; | |
276 | } | |
277 | ret = parse_rgb(buf, target_zone); | |
278 | if (ret) | |
279 | return ret; | |
280 | ret = alienware_update_led(target_zone); | |
281 | return ret ? ret : count; | |
282 | } | |
283 | ||
284 | /* | |
285 | * LED Brightness (Global) | |
286 | */ | |
287 | static int wmax_brightness(int brightness) | |
288 | { | |
289 | acpi_status status; | |
290 | struct acpi_buffer input; | |
291 | struct wmax_brightness_args args = { | |
292 | .led_mask = 0xFF, | |
293 | .percentage = brightness, | |
294 | }; | |
295 | input.length = (acpi_size) sizeof(args); | |
296 | input.pointer = &args; | |
297 | status = wmi_evaluate_method(WMAX_CONTROL_GUID, 1, | |
298 | WMAX_METHOD_BRIGHTNESS, &input, NULL); | |
299 | if (ACPI_FAILURE(status)) | |
300 | pr_err("alienware-wmi: brightness set failure: %u\n", status); | |
301 | return ACPI_FAILURE(status); | |
302 | } | |
303 | ||
304 | static void global_led_set(struct led_classdev *led_cdev, | |
305 | enum led_brightness brightness) | |
306 | { | |
307 | int ret; | |
308 | global_brightness = brightness; | |
309 | if (interface == WMAX) | |
310 | ret = wmax_brightness(brightness); | |
311 | else | |
312 | ret = alienware_update_led(&zone_data[0]); | |
313 | if (ret) | |
314 | pr_err("LED brightness update failed\n"); | |
315 | } | |
316 | ||
317 | static enum led_brightness global_led_get(struct led_classdev *led_cdev) | |
318 | { | |
319 | return global_brightness; | |
320 | } | |
321 | ||
322 | static struct led_classdev global_led = { | |
323 | .brightness_set = global_led_set, | |
324 | .brightness_get = global_led_get, | |
325 | .name = "alienware::global_brightness", | |
326 | }; | |
327 | ||
328 | /* | |
329 | * Lighting control state device attribute (Global) | |
330 | */ | |
331 | static ssize_t show_control_state(struct device *dev, | |
332 | struct device_attribute *attr, char *buf) | |
333 | { | |
334 | if (lighting_control_state == LEGACY_BOOTING) | |
335 | return scnprintf(buf, PAGE_SIZE, "[booting] running suspend\n"); | |
336 | else if (lighting_control_state == LEGACY_SUSPEND) | |
337 | return scnprintf(buf, PAGE_SIZE, "booting running [suspend]\n"); | |
338 | return scnprintf(buf, PAGE_SIZE, "booting [running] suspend\n"); | |
339 | } | |
340 | ||
341 | static ssize_t store_control_state(struct device *dev, | |
342 | struct device_attribute *attr, | |
343 | const char *buf, size_t count) | |
344 | { | |
345 | long unsigned int val; | |
346 | if (strcmp(buf, "booting\n") == 0) | |
347 | val = LEGACY_BOOTING; | |
348 | else if (strcmp(buf, "suspend\n") == 0) | |
349 | val = LEGACY_SUSPEND; | |
350 | else if (interface == LEGACY) | |
351 | val = LEGACY_RUNNING; | |
352 | else | |
353 | val = WMAX_RUNNING; | |
354 | lighting_control_state = val; | |
355 | pr_debug("alienware-wmi: updated control state to %d\n", | |
356 | lighting_control_state); | |
357 | return count; | |
358 | } | |
359 | ||
360 | static DEVICE_ATTR(lighting_control_state, 0644, show_control_state, | |
361 | store_control_state); | |
362 | ||
363 | static int alienware_zone_init(struct platform_device *dev) | |
364 | { | |
365 | int i; | |
366 | char buffer[10]; | |
367 | char *name; | |
368 | ||
369 | if (interface == WMAX) { | |
a46ad0f1 ML |
370 | lighting_control_state = WMAX_RUNNING; |
371 | } else if (interface == LEGACY) { | |
a46ad0f1 ML |
372 | lighting_control_state = LEGACY_RUNNING; |
373 | } | |
b998680e | 374 | global_led.max_brightness = 0x0F; |
a46ad0f1 ML |
375 | global_brightness = global_led.max_brightness; |
376 | ||
377 | /* | |
378 | * - zone_dev_attrs num_zones + 1 is for individual zones and then | |
379 | * null terminated | |
380 | * - zone_attrs num_zones + 2 is for all attrs in zone_dev_attrs + | |
381 | * the lighting control + null terminated | |
382 | * - zone_data num_zones is for the distinct zones | |
383 | */ | |
384 | zone_dev_attrs = | |
385 | kzalloc(sizeof(struct device_attribute) * (quirks->num_zones + 1), | |
386 | GFP_KERNEL); | |
562c7cec ML |
387 | if (!zone_dev_attrs) |
388 | return -ENOMEM; | |
389 | ||
a46ad0f1 ML |
390 | zone_attrs = |
391 | kzalloc(sizeof(struct attribute *) * (quirks->num_zones + 2), | |
392 | GFP_KERNEL); | |
562c7cec ML |
393 | if (!zone_attrs) |
394 | return -ENOMEM; | |
395 | ||
a46ad0f1 ML |
396 | zone_data = |
397 | kzalloc(sizeof(struct platform_zone) * (quirks->num_zones), | |
398 | GFP_KERNEL); | |
562c7cec ML |
399 | if (!zone_data) |
400 | return -ENOMEM; | |
a46ad0f1 ML |
401 | |
402 | for (i = 0; i < quirks->num_zones; i++) { | |
403 | sprintf(buffer, "zone%02X", i); | |
404 | name = kstrdup(buffer, GFP_KERNEL); | |
405 | if (name == NULL) | |
406 | return 1; | |
407 | sysfs_attr_init(&zone_dev_attrs[i].attr); | |
408 | zone_dev_attrs[i].attr.name = name; | |
409 | zone_dev_attrs[i].attr.mode = 0644; | |
410 | zone_dev_attrs[i].show = zone_show; | |
411 | zone_dev_attrs[i].store = zone_set; | |
412 | zone_data[i].location = i; | |
413 | zone_attrs[i] = &zone_dev_attrs[i].attr; | |
414 | zone_data[i].attr = &zone_dev_attrs[i]; | |
415 | } | |
416 | zone_attrs[quirks->num_zones] = &dev_attr_lighting_control_state.attr; | |
417 | zone_attribute_group.attrs = zone_attrs; | |
418 | ||
419 | led_classdev_register(&dev->dev, &global_led); | |
420 | ||
421 | return sysfs_create_group(&dev->dev.kobj, &zone_attribute_group); | |
422 | } | |
423 | ||
424 | static void alienware_zone_exit(struct platform_device *dev) | |
425 | { | |
426 | sysfs_remove_group(&dev->dev.kobj, &zone_attribute_group); | |
427 | led_classdev_unregister(&global_led); | |
428 | if (zone_dev_attrs) { | |
429 | int i; | |
430 | for (i = 0; i < quirks->num_zones; i++) | |
431 | kfree(zone_dev_attrs[i].attr.name); | |
432 | } | |
433 | kfree(zone_dev_attrs); | |
434 | kfree(zone_data); | |
435 | kfree(zone_attrs); | |
436 | } | |
437 | ||
438 | /* | |
439 | The HDMI mux sysfs node indicates the status of the HDMI input mux. | |
440 | It can toggle between standard system GPU output and HDMI input. | |
441 | */ | |
bc2ef884 ML |
442 | static acpi_status alienware_hdmi_command(struct hdmi_args *in_args, |
443 | u32 command, int *out_data) | |
a46ad0f1 ML |
444 | { |
445 | acpi_status status; | |
a46ad0f1 | 446 | union acpi_object *obj; |
bc2ef884 ML |
447 | struct acpi_buffer input; |
448 | struct acpi_buffer output; | |
449 | ||
450 | input.length = (acpi_size) sizeof(*in_args); | |
451 | input.pointer = in_args; | |
452 | if (out_data != NULL) { | |
453 | output.length = ACPI_ALLOCATE_BUFFER; | |
454 | output.pointer = NULL; | |
455 | status = wmi_evaluate_method(WMAX_CONTROL_GUID, 1, | |
456 | command, &input, &output); | |
457 | } else | |
458 | status = wmi_evaluate_method(WMAX_CONTROL_GUID, 1, | |
459 | command, &input, NULL); | |
460 | ||
461 | if (ACPI_SUCCESS(status) && out_data != NULL) { | |
462 | obj = (union acpi_object *)output.pointer; | |
463 | if (obj && obj->type == ACPI_TYPE_INTEGER) | |
464 | *out_data = (u32) obj->integer.value; | |
465 | } | |
466 | return status; | |
467 | ||
468 | } | |
469 | ||
470 | static ssize_t show_hdmi_cable(struct device *dev, | |
471 | struct device_attribute *attr, char *buf) | |
472 | { | |
473 | acpi_status status; | |
474 | u32 out_data; | |
a46ad0f1 ML |
475 | struct hdmi_args in_args = { |
476 | .arg = 0, | |
477 | }; | |
bc2ef884 ML |
478 | status = |
479 | alienware_hdmi_command(&in_args, WMAX_METHOD_HDMI_CABLE, | |
480 | (u32 *) &out_data); | |
481 | if (ACPI_SUCCESS(status)) { | |
482 | if (out_data == 0) | |
483 | return scnprintf(buf, PAGE_SIZE, | |
484 | "[unconnected] connected unknown\n"); | |
485 | else if (out_data == 1) | |
486 | return scnprintf(buf, PAGE_SIZE, | |
487 | "unconnected [connected] unknown\n"); | |
488 | } | |
489 | pr_err("alienware-wmi: unknown HDMI cable status: %d\n", status); | |
490 | return scnprintf(buf, PAGE_SIZE, "unconnected connected [unknown]\n"); | |
491 | } | |
492 | ||
493 | static ssize_t show_hdmi_source(struct device *dev, | |
494 | struct device_attribute *attr, char *buf) | |
495 | { | |
496 | acpi_status status; | |
497 | u32 out_data; | |
498 | struct hdmi_args in_args = { | |
499 | .arg = 0, | |
500 | }; | |
501 | status = | |
502 | alienware_hdmi_command(&in_args, WMAX_METHOD_HDMI_STATUS, | |
503 | (u32 *) &out_data); | |
a46ad0f1 ML |
504 | |
505 | if (ACPI_SUCCESS(status)) { | |
bc2ef884 | 506 | if (out_data == 1) |
a46ad0f1 ML |
507 | return scnprintf(buf, PAGE_SIZE, |
508 | "[input] gpu unknown\n"); | |
bc2ef884 | 509 | else if (out_data == 2) |
a46ad0f1 ML |
510 | return scnprintf(buf, PAGE_SIZE, |
511 | "input [gpu] unknown\n"); | |
512 | } | |
bc2ef884 | 513 | pr_err("alienware-wmi: unknown HDMI source status: %d\n", out_data); |
a46ad0f1 ML |
514 | return scnprintf(buf, PAGE_SIZE, "input gpu [unknown]\n"); |
515 | } | |
516 | ||
bc2ef884 ML |
517 | static ssize_t toggle_hdmi_source(struct device *dev, |
518 | struct device_attribute *attr, | |
519 | const char *buf, size_t count) | |
a46ad0f1 | 520 | { |
a46ad0f1 ML |
521 | acpi_status status; |
522 | struct hdmi_args args; | |
523 | if (strcmp(buf, "gpu\n") == 0) | |
524 | args.arg = 1; | |
525 | else if (strcmp(buf, "input\n") == 0) | |
526 | args.arg = 2; | |
527 | else | |
528 | args.arg = 3; | |
529 | pr_debug("alienware-wmi: setting hdmi to %d : %s", args.arg, buf); | |
bc2ef884 ML |
530 | |
531 | status = alienware_hdmi_command(&args, WMAX_METHOD_HDMI_SOURCE, NULL); | |
532 | ||
a46ad0f1 ML |
533 | if (ACPI_FAILURE(status)) |
534 | pr_err("alienware-wmi: HDMI toggle failed: results: %u\n", | |
535 | status); | |
536 | return count; | |
537 | } | |
538 | ||
bc2ef884 ML |
539 | static DEVICE_ATTR(cable, S_IRUGO, show_hdmi_cable, NULL); |
540 | static DEVICE_ATTR(source, S_IRUGO | S_IWUSR, show_hdmi_source, | |
541 | toggle_hdmi_source); | |
542 | ||
543 | static struct attribute *hdmi_attrs[] = { | |
544 | &dev_attr_cable.attr, | |
545 | &dev_attr_source.attr, | |
546 | NULL, | |
547 | }; | |
a46ad0f1 | 548 | |
bc2ef884 ML |
549 | static struct attribute_group hdmi_attribute_group = { |
550 | .name = "hdmi", | |
551 | .attrs = hdmi_attrs, | |
552 | }; | |
553 | ||
554 | static void remove_hdmi(struct platform_device *dev) | |
a46ad0f1 | 555 | { |
fee4efd7 ML |
556 | if (quirks->hdmi_mux > 0) |
557 | sysfs_remove_group(&dev->dev.kobj, &hdmi_attribute_group); | |
a46ad0f1 ML |
558 | } |
559 | ||
bc2ef884 | 560 | static int create_hdmi(struct platform_device *dev) |
a46ad0f1 | 561 | { |
bc2ef884 ML |
562 | int ret; |
563 | ||
564 | ret = sysfs_create_group(&dev->dev.kobj, &hdmi_attribute_group); | |
a46ad0f1 ML |
565 | if (ret) |
566 | goto error_create_hdmi; | |
567 | return 0; | |
568 | ||
569 | error_create_hdmi: | |
bc2ef884 | 570 | remove_hdmi(dev); |
a46ad0f1 ML |
571 | return ret; |
572 | } | |
573 | ||
574 | static int __init alienware_wmi_init(void) | |
575 | { | |
576 | int ret; | |
577 | ||
578 | if (wmi_has_guid(LEGACY_CONTROL_GUID)) | |
579 | interface = LEGACY; | |
580 | else if (wmi_has_guid(WMAX_CONTROL_GUID)) | |
581 | interface = WMAX; | |
582 | else { | |
583 | pr_warn("alienware-wmi: No known WMI GUID found\n"); | |
584 | return -ENODEV; | |
585 | } | |
586 | ||
587 | dmi_check_system(alienware_quirks); | |
588 | if (quirks == NULL) | |
589 | quirks = &quirk_unknown; | |
590 | ||
591 | ret = platform_driver_register(&platform_driver); | |
592 | if (ret) | |
593 | goto fail_platform_driver; | |
594 | platform_device = platform_device_alloc("alienware-wmi", -1); | |
595 | if (!platform_device) { | |
596 | ret = -ENOMEM; | |
597 | goto fail_platform_device1; | |
598 | } | |
599 | ret = platform_device_add(platform_device); | |
600 | if (ret) | |
601 | goto fail_platform_device2; | |
602 | ||
fee4efd7 | 603 | if (quirks->hdmi_mux > 0) { |
bc2ef884 | 604 | ret = create_hdmi(platform_device); |
a46ad0f1 ML |
605 | if (ret) |
606 | goto fail_prep_hdmi; | |
607 | } | |
608 | ||
609 | ret = alienware_zone_init(platform_device); | |
610 | if (ret) | |
611 | goto fail_prep_zones; | |
612 | ||
613 | return 0; | |
614 | ||
615 | fail_prep_zones: | |
616 | alienware_zone_exit(platform_device); | |
617 | fail_prep_hdmi: | |
618 | platform_device_del(platform_device); | |
619 | fail_platform_device2: | |
620 | platform_device_put(platform_device); | |
621 | fail_platform_device1: | |
622 | platform_driver_unregister(&platform_driver); | |
623 | fail_platform_driver: | |
624 | return ret; | |
625 | } | |
626 | ||
627 | module_init(alienware_wmi_init); | |
628 | ||
629 | static void __exit alienware_wmi_exit(void) | |
630 | { | |
a46ad0f1 | 631 | if (platform_device) { |
562c7cec ML |
632 | alienware_zone_exit(platform_device); |
633 | remove_hdmi(platform_device); | |
a46ad0f1 ML |
634 | platform_device_unregister(platform_device); |
635 | platform_driver_unregister(&platform_driver); | |
636 | } | |
637 | } | |
638 | ||
639 | module_exit(alienware_wmi_exit); |