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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/leds.h>
25
26#define LEGACY_CONTROL_GUID "A90597CE-A997-11DA-B012-B622A1EF5492"
27#define LEGACY_POWER_CONTROL_GUID "A80593CE-A997-11DA-B012-B622A1EF5492"
28#define WMAX_CONTROL_GUID "A70591CE-A997-11DA-B012-B622A1EF5492"
29
30#define WMAX_METHOD_HDMI_SOURCE 0x1
31#define WMAX_METHOD_HDMI_STATUS 0x2
32#define WMAX_METHOD_BRIGHTNESS 0x3
33#define WMAX_METHOD_ZONE_CONTROL 0x4
34#define WMAX_METHOD_HDMI_CABLE 0x5
35#define WMAX_METHOD_AMPLIFIER_CABLE 0x6
36#define WMAX_METHOD_DEEP_SLEEP_CONTROL 0x0B
37#define WMAX_METHOD_DEEP_SLEEP_STATUS 0x0C
38
39MODULE_AUTHOR("Mario Limonciello <mario_limonciello@dell.com>");
40MODULE_DESCRIPTION("Alienware special feature control");
41MODULE_LICENSE("GPL");
42MODULE_ALIAS("wmi:" LEGACY_CONTROL_GUID);
43MODULE_ALIAS("wmi:" WMAX_CONTROL_GUID);
44
45enum INTERFACE_FLAGS {
46 LEGACY,
47 WMAX,
48};
49
50enum LEGACY_CONTROL_STATES {
51 LEGACY_RUNNING = 1,
52 LEGACY_BOOTING = 0,
53 LEGACY_SUSPEND = 3,
54};
55
56enum WMAX_CONTROL_STATES {
57 WMAX_RUNNING = 0xFF,
58 WMAX_BOOTING = 0,
59 WMAX_SUSPEND = 3,
60};
61
62struct quirk_entry {
63 u8 num_zones;
64 u8 hdmi_mux;
65 u8 amplifier;
66 u8 deepslp;
67};
68
69static struct quirk_entry *quirks;
70
71
72static struct quirk_entry quirk_inspiron5675 = {
73 .num_zones = 2,
74 .hdmi_mux = 0,
75 .amplifier = 0,
76 .deepslp = 0,
77};
78
79static struct quirk_entry quirk_unknown = {
80 .num_zones = 2,
81 .hdmi_mux = 0,
82 .amplifier = 0,
83 .deepslp = 0,
84};
85
86static struct quirk_entry quirk_x51_r1_r2 = {
87 .num_zones = 3,
88 .hdmi_mux = 0,
89 .amplifier = 0,
90 .deepslp = 0,
91};
92
93static struct quirk_entry quirk_x51_r3 = {
94 .num_zones = 4,
95 .hdmi_mux = 0,
96 .amplifier = 1,
97 .deepslp = 0,
98};
99
100static struct quirk_entry quirk_asm100 = {
101 .num_zones = 2,
102 .hdmi_mux = 1,
103 .amplifier = 0,
104 .deepslp = 0,
105};
106
107static struct quirk_entry quirk_asm200 = {
108 .num_zones = 2,
109 .hdmi_mux = 1,
110 .amplifier = 0,
111 .deepslp = 1,
112};
113
114static struct quirk_entry quirk_asm201 = {
115 .num_zones = 2,
116 .hdmi_mux = 1,
117 .amplifier = 1,
118 .deepslp = 1,
119};
120
121static int __init dmi_matched(const struct dmi_system_id *dmi)
122{
123 quirks = dmi->driver_data;
124 return 1;
125}
126
127static const struct dmi_system_id alienware_quirks[] __initconst = {
128 {
129 .callback = dmi_matched,
130 .ident = "Alienware X51 R3",
131 .matches = {
132 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
133 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware X51 R3"),
134 },
135 .driver_data = &quirk_x51_r3,
136 },
137 {
138 .callback = dmi_matched,
139 .ident = "Alienware X51 R2",
140 .matches = {
141 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
142 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware X51 R2"),
143 },
144 .driver_data = &quirk_x51_r1_r2,
145 },
146 {
147 .callback = dmi_matched,
148 .ident = "Alienware X51 R1",
149 .matches = {
150 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
151 DMI_MATCH(DMI_PRODUCT_NAME, "Alienware X51"),
152 },
153 .driver_data = &quirk_x51_r1_r2,
154 },
155 {
156 .callback = dmi_matched,
157 .ident = "Alienware ASM100",
158 .matches = {
159 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
160 DMI_MATCH(DMI_PRODUCT_NAME, "ASM100"),
161 },
162 .driver_data = &quirk_asm100,
163 },
164 {
165 .callback = dmi_matched,
166 .ident = "Alienware ASM200",
167 .matches = {
168 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
169 DMI_MATCH(DMI_PRODUCT_NAME, "ASM200"),
170 },
171 .driver_data = &quirk_asm200,
172 },
173 {
174 .callback = dmi_matched,
175 .ident = "Alienware ASM201",
176 .matches = {
177 DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
178 DMI_MATCH(DMI_PRODUCT_NAME, "ASM201"),
179 },
180 .driver_data = &quirk_asm201,
181 },
182 {
183 .callback = dmi_matched,
184 .ident = "Dell Inc. Inspiron 5675",
185 .matches = {
186 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
187 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5675"),
188 },
189 .driver_data = &quirk_inspiron5675,
190 },
191 {}
192};
193
194struct color_platform {
195 u8 blue;
196 u8 green;
197 u8 red;
198} __packed;
199
200struct platform_zone {
201 u8 location;
202 struct device_attribute *attr;
203 struct color_platform colors;
204};
205
206struct wmax_brightness_args {
207 u32 led_mask;
208 u32 percentage;
209};
210
211struct wmax_basic_args {
212 u8 arg;
213};
214
215struct legacy_led_args {
216 struct color_platform colors;
217 u8 brightness;
218 u8 state;
219} __packed;
220
221struct wmax_led_args {
222 u32 led_mask;
223 struct color_platform colors;
224 u8 state;
225} __packed;
226
227static struct platform_device *platform_device;
228static struct device_attribute *zone_dev_attrs;
229static struct attribute **zone_attrs;
230static struct platform_zone *zone_data;
231
232static struct platform_driver platform_driver = {
233 .driver = {
234 .name = "alienware-wmi",
235 }
236};
237
238static struct attribute_group zone_attribute_group = {
239 .name = "rgb_zones",
240};
241
242static u8 interface;
243static u8 lighting_control_state;
244static u8 global_brightness;
245
246/*
247 * Helpers used for zone control
248 */
249static int parse_rgb(const char *buf, struct platform_zone *zone)
250{
251 long unsigned int rgb;
252 int ret;
253 union color_union {
254 struct color_platform cp;
255 int package;
256 } repackager;
257
258 ret = kstrtoul(buf, 16, &rgb);
259 if (ret)
260 return ret;
261
262 /* RGB triplet notation is 24-bit hexadecimal */
263 if (rgb > 0xFFFFFF)
264 return -EINVAL;
265
266 repackager.package = rgb & 0x0f0f0f0f;
267 pr_debug("alienware-wmi: r: %d g:%d b: %d\n",
268 repackager.cp.red, repackager.cp.green, repackager.cp.blue);
269 zone->colors = repackager.cp;
270 return 0;
271}
272
273static struct platform_zone *match_zone(struct device_attribute *attr)
274{
275 u8 zone;
276
277 for (zone = 0; zone < quirks->num_zones; zone++) {
278 if ((struct device_attribute *)zone_data[zone].attr == attr) {
279 pr_debug("alienware-wmi: matched zone location: %d\n",
280 zone_data[zone].location);
281 return &zone_data[zone];
282 }
283 }
284 return NULL;
285}
286
287/*
288 * Individual RGB zone control
289 */
290static int alienware_update_led(struct platform_zone *zone)
291{
292 int method_id;
293 acpi_status status;
294 char *guid;
295 struct acpi_buffer input;
296 struct legacy_led_args legacy_args;
297 struct wmax_led_args wmax_basic_args;
298 if (interface == WMAX) {
299 wmax_basic_args.led_mask = 1 << zone->location;
300 wmax_basic_args.colors = zone->colors;
301 wmax_basic_args.state = lighting_control_state;
302 guid = WMAX_CONTROL_GUID;
303 method_id = WMAX_METHOD_ZONE_CONTROL;
304
305 input.length = (acpi_size) sizeof(wmax_basic_args);
306 input.pointer = &wmax_basic_args;
307 } else {
308 legacy_args.colors = zone->colors;
309 legacy_args.brightness = global_brightness;
310 legacy_args.state = 0;
311 if (lighting_control_state == LEGACY_BOOTING ||
312 lighting_control_state == LEGACY_SUSPEND) {
313 guid = LEGACY_POWER_CONTROL_GUID;
314 legacy_args.state = lighting_control_state;
315 } else
316 guid = LEGACY_CONTROL_GUID;
317 method_id = zone->location + 1;
318
319 input.length = (acpi_size) sizeof(legacy_args);
320 input.pointer = &legacy_args;
321 }
322 pr_debug("alienware-wmi: guid %s method %d\n", guid, method_id);
323
324 status = wmi_evaluate_method(guid, 0, method_id, &input, NULL);
325 if (ACPI_FAILURE(status))
326 pr_err("alienware-wmi: zone set failure: %u\n", status);
327 return ACPI_FAILURE(status);
328}
329
330static ssize_t zone_show(struct device *dev, struct device_attribute *attr,
331 char *buf)
332{
333 struct platform_zone *target_zone;
334 target_zone = match_zone(attr);
335 if (target_zone == NULL)
336 return sprintf(buf, "red: -1, green: -1, blue: -1\n");
337 return sprintf(buf, "red: %d, green: %d, blue: %d\n",
338 target_zone->colors.red,
339 target_zone->colors.green, target_zone->colors.blue);
340
341}
342
343static ssize_t zone_set(struct device *dev, struct device_attribute *attr,
344 const char *buf, size_t count)
345{
346 struct platform_zone *target_zone;
347 int ret;
348 target_zone = match_zone(attr);
349 if (target_zone == NULL) {
350 pr_err("alienware-wmi: invalid target zone\n");
351 return 1;
352 }
353 ret = parse_rgb(buf, target_zone);
354 if (ret)
355 return ret;
356 ret = alienware_update_led(target_zone);
357 return ret ? ret : count;
358}
359
360/*
361 * LED Brightness (Global)
362 */
363static int wmax_brightness(int brightness)
364{
365 acpi_status status;
366 struct acpi_buffer input;
367 struct wmax_brightness_args args = {
368 .led_mask = 0xFF,
369 .percentage = brightness,
370 };
371 input.length = (acpi_size) sizeof(args);
372 input.pointer = &args;
373 status = wmi_evaluate_method(WMAX_CONTROL_GUID, 0,
374 WMAX_METHOD_BRIGHTNESS, &input, NULL);
375 if (ACPI_FAILURE(status))
376 pr_err("alienware-wmi: brightness set failure: %u\n", status);
377 return ACPI_FAILURE(status);
378}
379
380static void global_led_set(struct led_classdev *led_cdev,
381 enum led_brightness brightness)
382{
383 int ret;
384 global_brightness = brightness;
385 if (interface == WMAX)
386 ret = wmax_brightness(brightness);
387 else
388 ret = alienware_update_led(&zone_data[0]);
389 if (ret)
390 pr_err("LED brightness update failed\n");
391}
392
393static enum led_brightness global_led_get(struct led_classdev *led_cdev)
394{
395 return global_brightness;
396}
397
398static struct led_classdev global_led = {
399 .brightness_set = global_led_set,
400 .brightness_get = global_led_get,
401 .name = "alienware::global_brightness",
402};
403
404/*
405 * Lighting control state device attribute (Global)
406 */
407static ssize_t show_control_state(struct device *dev,
408 struct device_attribute *attr, char *buf)
409{
410 if (lighting_control_state == LEGACY_BOOTING)
411 return scnprintf(buf, PAGE_SIZE, "[booting] running suspend\n");
412 else if (lighting_control_state == LEGACY_SUSPEND)
413 return scnprintf(buf, PAGE_SIZE, "booting running [suspend]\n");
414 return scnprintf(buf, PAGE_SIZE, "booting [running] suspend\n");
415}
416
417static ssize_t store_control_state(struct device *dev,
418 struct device_attribute *attr,
419 const char *buf, size_t count)
420{
421 long unsigned int val;
422 if (strcmp(buf, "booting\n") == 0)
423 val = LEGACY_BOOTING;
424 else if (strcmp(buf, "suspend\n") == 0)
425 val = LEGACY_SUSPEND;
426 else if (interface == LEGACY)
427 val = LEGACY_RUNNING;
428 else
429 val = WMAX_RUNNING;
430 lighting_control_state = val;
431 pr_debug("alienware-wmi: updated control state to %d\n",
432 lighting_control_state);
433 return count;
434}
435
436static DEVICE_ATTR(lighting_control_state, 0644, show_control_state,
437 store_control_state);
438
439static int alienware_zone_init(struct platform_device *dev)
440{
441 u8 zone;
442 char buffer[10];
443 char *name;
444
445 if (interface == WMAX) {
446 lighting_control_state = WMAX_RUNNING;
447 } else if (interface == LEGACY) {
448 lighting_control_state = LEGACY_RUNNING;
449 }
450 global_led.max_brightness = 0x0F;
451 global_brightness = global_led.max_brightness;
452
453 /*
454 * - zone_dev_attrs num_zones + 1 is for individual zones and then
455 * null terminated
456 * - zone_attrs num_zones + 2 is for all attrs in zone_dev_attrs +
457 * the lighting control + null terminated
458 * - zone_data num_zones is for the distinct zones
459 */
460 zone_dev_attrs =
461 kzalloc(sizeof(struct device_attribute) * (quirks->num_zones + 1),
462 GFP_KERNEL);
463 if (!zone_dev_attrs)
464 return -ENOMEM;
465
466 zone_attrs =
467 kzalloc(sizeof(struct attribute *) * (quirks->num_zones + 2),
468 GFP_KERNEL);
469 if (!zone_attrs)
470 return -ENOMEM;
471
472 zone_data =
473 kzalloc(sizeof(struct platform_zone) * (quirks->num_zones),
474 GFP_KERNEL);
475 if (!zone_data)
476 return -ENOMEM;
477
478 for (zone = 0; zone < quirks->num_zones; zone++) {
479 sprintf(buffer, "zone%02hhX", zone);
480 name = kstrdup(buffer, GFP_KERNEL);
481 if (name == NULL)
482 return 1;
483 sysfs_attr_init(&zone_dev_attrs[zone].attr);
484 zone_dev_attrs[zone].attr.name = name;
485 zone_dev_attrs[zone].attr.mode = 0644;
486 zone_dev_attrs[zone].show = zone_show;
487 zone_dev_attrs[zone].store = zone_set;
488 zone_data[zone].location = zone;
489 zone_attrs[zone] = &zone_dev_attrs[zone].attr;
490 zone_data[zone].attr = &zone_dev_attrs[zone];
491 }
492 zone_attrs[quirks->num_zones] = &dev_attr_lighting_control_state.attr;
493 zone_attribute_group.attrs = zone_attrs;
494
495 led_classdev_register(&dev->dev, &global_led);
496
497 return sysfs_create_group(&dev->dev.kobj, &zone_attribute_group);
498}
499
500static void alienware_zone_exit(struct platform_device *dev)
501{
502 u8 zone;
503
504 sysfs_remove_group(&dev->dev.kobj, &zone_attribute_group);
505 led_classdev_unregister(&global_led);
506 if (zone_dev_attrs) {
507 for (zone = 0; zone < quirks->num_zones; zone++)
508 kfree(zone_dev_attrs[zone].attr.name);
509 }
510 kfree(zone_dev_attrs);
511 kfree(zone_data);
512 kfree(zone_attrs);
513}
514
515static acpi_status alienware_wmax_command(struct wmax_basic_args *in_args,
516 u32 command, int *out_data)
517{
518 acpi_status status;
519 union acpi_object *obj;
520 struct acpi_buffer input;
521 struct acpi_buffer output;
522
523 input.length = (acpi_size) sizeof(*in_args);
524 input.pointer = in_args;
525 if (out_data != NULL) {
526 output.length = ACPI_ALLOCATE_BUFFER;
527 output.pointer = NULL;
528 status = wmi_evaluate_method(WMAX_CONTROL_GUID, 0,
529 command, &input, &output);
530 } else
531 status = wmi_evaluate_method(WMAX_CONTROL_GUID, 0,
532 command, &input, NULL);
533
534 if (ACPI_SUCCESS(status) && out_data != NULL) {
535 obj = (union acpi_object *)output.pointer;
536 if (obj && obj->type == ACPI_TYPE_INTEGER)
537 *out_data = (u32) obj->integer.value;
538 }
539 return status;
540
541}
542
543/*
544 * The HDMI mux sysfs node indicates the status of the HDMI input mux.
545 * It can toggle between standard system GPU output and HDMI input.
546 */
547static ssize_t show_hdmi_cable(struct device *dev,
548 struct device_attribute *attr, char *buf)
549{
550 acpi_status status;
551 u32 out_data;
552 struct wmax_basic_args in_args = {
553 .arg = 0,
554 };
555 status =
556 alienware_wmax_command(&in_args, WMAX_METHOD_HDMI_CABLE,
557 (u32 *) &out_data);
558 if (ACPI_SUCCESS(status)) {
559 if (out_data == 0)
560 return scnprintf(buf, PAGE_SIZE,
561 "[unconnected] connected unknown\n");
562 else if (out_data == 1)
563 return scnprintf(buf, PAGE_SIZE,
564 "unconnected [connected] unknown\n");
565 }
566 pr_err("alienware-wmi: unknown HDMI cable status: %d\n", status);
567 return scnprintf(buf, PAGE_SIZE, "unconnected connected [unknown]\n");
568}
569
570static ssize_t show_hdmi_source(struct device *dev,
571 struct device_attribute *attr, char *buf)
572{
573 acpi_status status;
574 u32 out_data;
575 struct wmax_basic_args in_args = {
576 .arg = 0,
577 };
578 status =
579 alienware_wmax_command(&in_args, WMAX_METHOD_HDMI_STATUS,
580 (u32 *) &out_data);
581
582 if (ACPI_SUCCESS(status)) {
583 if (out_data == 1)
584 return scnprintf(buf, PAGE_SIZE,
585 "[input] gpu unknown\n");
586 else if (out_data == 2)
587 return scnprintf(buf, PAGE_SIZE,
588 "input [gpu] unknown\n");
589 }
590 pr_err("alienware-wmi: unknown HDMI source status: %d\n", out_data);
591 return scnprintf(buf, PAGE_SIZE, "input gpu [unknown]\n");
592}
593
594static ssize_t toggle_hdmi_source(struct device *dev,
595 struct device_attribute *attr,
596 const char *buf, size_t count)
597{
598 acpi_status status;
599 struct wmax_basic_args args;
600 if (strcmp(buf, "gpu\n") == 0)
601 args.arg = 1;
602 else if (strcmp(buf, "input\n") == 0)
603 args.arg = 2;
604 else
605 args.arg = 3;
606 pr_debug("alienware-wmi: setting hdmi to %d : %s", args.arg, buf);
607
608 status = alienware_wmax_command(&args, WMAX_METHOD_HDMI_SOURCE, NULL);
609
610 if (ACPI_FAILURE(status))
611 pr_err("alienware-wmi: HDMI toggle failed: results: %u\n",
612 status);
613 return count;
614}
615
616static DEVICE_ATTR(cable, S_IRUGO, show_hdmi_cable, NULL);
617static DEVICE_ATTR(source, S_IRUGO | S_IWUSR, show_hdmi_source,
618 toggle_hdmi_source);
619
620static struct attribute *hdmi_attrs[] = {
621 &dev_attr_cable.attr,
622 &dev_attr_source.attr,
623 NULL,
624};
625
626static const struct attribute_group hdmi_attribute_group = {
627 .name = "hdmi",
628 .attrs = hdmi_attrs,
629};
630
631static void remove_hdmi(struct platform_device *dev)
632{
633 if (quirks->hdmi_mux > 0)
634 sysfs_remove_group(&dev->dev.kobj, &hdmi_attribute_group);
635}
636
637static int create_hdmi(struct platform_device *dev)
638{
639 int ret;
640
641 ret = sysfs_create_group(&dev->dev.kobj, &hdmi_attribute_group);
642 if (ret)
643 remove_hdmi(dev);
644 return ret;
645}
646
647/*
648 * Alienware GFX amplifier support
649 * - Currently supports reading cable status
650 * - Leaving expansion room to possibly support dock/undock events later
651 */
652static ssize_t show_amplifier_status(struct device *dev,
653 struct device_attribute *attr, char *buf)
654{
655 acpi_status status;
656 u32 out_data;
657 struct wmax_basic_args in_args = {
658 .arg = 0,
659 };
660 status =
661 alienware_wmax_command(&in_args, WMAX_METHOD_AMPLIFIER_CABLE,
662 (u32 *) &out_data);
663 if (ACPI_SUCCESS(status)) {
664 if (out_data == 0)
665 return scnprintf(buf, PAGE_SIZE,
666 "[unconnected] connected unknown\n");
667 else if (out_data == 1)
668 return scnprintf(buf, PAGE_SIZE,
669 "unconnected [connected] unknown\n");
670 }
671 pr_err("alienware-wmi: unknown amplifier cable status: %d\n", status);
672 return scnprintf(buf, PAGE_SIZE, "unconnected connected [unknown]\n");
673}
674
675static DEVICE_ATTR(status, S_IRUGO, show_amplifier_status, NULL);
676
677static struct attribute *amplifier_attrs[] = {
678 &dev_attr_status.attr,
679 NULL,
680};
681
682static const struct attribute_group amplifier_attribute_group = {
683 .name = "amplifier",
684 .attrs = amplifier_attrs,
685};
686
687static void remove_amplifier(struct platform_device *dev)
688{
689 if (quirks->amplifier > 0)
690 sysfs_remove_group(&dev->dev.kobj, &lifier_attribute_group);
691}
692
693static int create_amplifier(struct platform_device *dev)
694{
695 int ret;
696
697 ret = sysfs_create_group(&dev->dev.kobj, &lifier_attribute_group);
698 if (ret)
699 remove_amplifier(dev);
700 return ret;
701}
702
703/*
704 * Deep Sleep Control support
705 * - Modifies BIOS setting for deep sleep control allowing extra wakeup events
706 */
707static ssize_t show_deepsleep_status(struct device *dev,
708 struct device_attribute *attr, char *buf)
709{
710 acpi_status status;
711 u32 out_data;
712 struct wmax_basic_args in_args = {
713 .arg = 0,
714 };
715 status = alienware_wmax_command(&in_args, WMAX_METHOD_DEEP_SLEEP_STATUS,
716 (u32 *) &out_data);
717 if (ACPI_SUCCESS(status)) {
718 if (out_data == 0)
719 return scnprintf(buf, PAGE_SIZE,
720 "[disabled] s5 s5_s4\n");
721 else if (out_data == 1)
722 return scnprintf(buf, PAGE_SIZE,
723 "disabled [s5] s5_s4\n");
724 else if (out_data == 2)
725 return scnprintf(buf, PAGE_SIZE,
726 "disabled s5 [s5_s4]\n");
727 }
728 pr_err("alienware-wmi: unknown deep sleep status: %d\n", status);
729 return scnprintf(buf, PAGE_SIZE, "disabled s5 s5_s4 [unknown]\n");
730}
731
732static ssize_t toggle_deepsleep(struct device *dev,
733 struct device_attribute *attr,
734 const char *buf, size_t count)
735{
736 acpi_status status;
737 struct wmax_basic_args args;
738
739 if (strcmp(buf, "disabled\n") == 0)
740 args.arg = 0;
741 else if (strcmp(buf, "s5\n") == 0)
742 args.arg = 1;
743 else
744 args.arg = 2;
745 pr_debug("alienware-wmi: setting deep sleep to %d : %s", args.arg, buf);
746
747 status = alienware_wmax_command(&args, WMAX_METHOD_DEEP_SLEEP_CONTROL,
748 NULL);
749
750 if (ACPI_FAILURE(status))
751 pr_err("alienware-wmi: deep sleep control failed: results: %u\n",
752 status);
753 return count;
754}
755
756static DEVICE_ATTR(deepsleep, S_IRUGO | S_IWUSR, show_deepsleep_status, toggle_deepsleep);
757
758static struct attribute *deepsleep_attrs[] = {
759 &dev_attr_deepsleep.attr,
760 NULL,
761};
762
763static const struct attribute_group deepsleep_attribute_group = {
764 .name = "deepsleep",
765 .attrs = deepsleep_attrs,
766};
767
768static void remove_deepsleep(struct platform_device *dev)
769{
770 if (quirks->deepslp > 0)
771 sysfs_remove_group(&dev->dev.kobj, &deepsleep_attribute_group);
772}
773
774static int create_deepsleep(struct platform_device *dev)
775{
776 int ret;
777
778 ret = sysfs_create_group(&dev->dev.kobj, &deepsleep_attribute_group);
779 if (ret)
780 remove_deepsleep(dev);
781 return ret;
782}
783
784static int __init alienware_wmi_init(void)
785{
786 int ret;
787
788 if (wmi_has_guid(LEGACY_CONTROL_GUID))
789 interface = LEGACY;
790 else if (wmi_has_guid(WMAX_CONTROL_GUID))
791 interface = WMAX;
792 else {
793 pr_warn("alienware-wmi: No known WMI GUID found\n");
794 return -ENODEV;
795 }
796
797 dmi_check_system(alienware_quirks);
798 if (quirks == NULL)
799 quirks = &quirk_unknown;
800
801 ret = platform_driver_register(&platform_driver);
802 if (ret)
803 goto fail_platform_driver;
804 platform_device = platform_device_alloc("alienware-wmi", -1);
805 if (!platform_device) {
806 ret = -ENOMEM;
807 goto fail_platform_device1;
808 }
809 ret = platform_device_add(platform_device);
810 if (ret)
811 goto fail_platform_device2;
812
813 if (quirks->hdmi_mux > 0) {
814 ret = create_hdmi(platform_device);
815 if (ret)
816 goto fail_prep_hdmi;
817 }
818
819 if (quirks->amplifier > 0) {
820 ret = create_amplifier(platform_device);
821 if (ret)
822 goto fail_prep_amplifier;
823 }
824
825 if (quirks->deepslp > 0) {
826 ret = create_deepsleep(platform_device);
827 if (ret)
828 goto fail_prep_deepsleep;
829 }
830
831 ret = alienware_zone_init(platform_device);
832 if (ret)
833 goto fail_prep_zones;
834
835 return 0;
836
837fail_prep_zones:
838 alienware_zone_exit(platform_device);
839fail_prep_deepsleep:
840fail_prep_amplifier:
841fail_prep_hdmi:
842 platform_device_del(platform_device);
843fail_platform_device2:
844 platform_device_put(platform_device);
845fail_platform_device1:
846 platform_driver_unregister(&platform_driver);
847fail_platform_driver:
848 return ret;
849}
850
851module_init(alienware_wmi_init);
852
853static void __exit alienware_wmi_exit(void)
854{
855 if (platform_device) {
856 alienware_zone_exit(platform_device);
857 remove_hdmi(platform_device);
858 platform_device_unregister(platform_device);
859 platform_driver_unregister(&platform_driver);
860 }
861}
862
863module_exit(alienware_wmi_exit);