xref: /linux/drivers/platform/x86/hp/hp-wmi.c (revision 3a39d672e7f48b8d6b91a09afa4b55352773b4b5)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * HP WMI hotkeys
4  *
5  * Copyright (C) 2008 Red Hat <mjg@redhat.com>
6  * Copyright (C) 2010, 2011 Anssi Hannula <anssi.hannula@iki.fi>
7  *
8  * Portions based on wistron_btns.c:
9  * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
10  * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
11  * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
12  */
13 
14 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
15 
16 #include <linux/kernel.h>
17 #include <linux/module.h>
18 #include <linux/init.h>
19 #include <linux/slab.h>
20 #include <linux/types.h>
21 #include <linux/input.h>
22 #include <linux/input/sparse-keymap.h>
23 #include <linux/platform_device.h>
24 #include <linux/platform_profile.h>
25 #include <linux/hwmon.h>
26 #include <linux/acpi.h>
27 #include <linux/mutex.h>
28 #include <linux/cleanup.h>
29 #include <linux/power_supply.h>
30 #include <linux/rfkill.h>
31 #include <linux/string.h>
32 #include <linux/dmi.h>
33 
34 MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>");
35 MODULE_DESCRIPTION("HP laptop WMI driver");
36 MODULE_LICENSE("GPL");
37 
38 MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C");
39 MODULE_ALIAS("wmi:5FB7F034-2C63-45E9-BE91-3D44E2C707E4");
40 
41 #define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
42 #define HPWMI_BIOS_GUID "5FB7F034-2C63-45E9-BE91-3D44E2C707E4"
43 
44 #define HP_OMEN_EC_THERMAL_PROFILE_FLAGS_OFFSET 0x62
45 #define HP_OMEN_EC_THERMAL_PROFILE_TIMER_OFFSET 0x63
46 #define HP_OMEN_EC_THERMAL_PROFILE_OFFSET 0x95
47 
48 #define ACPI_AC_CLASS "ac_adapter"
49 
50 #define zero_if_sup(tmp) (zero_insize_support?0:sizeof(tmp)) // use when zero insize is required
51 
52 /* DMI board names of devices that should use the omen specific path for
53  * thermal profiles.
54  * This was obtained by taking a look in the windows omen command center
55  * app and parsing a json file that they use to figure out what capabilities
56  * the device should have.
57  * A device is considered an omen if the DisplayName in that list contains
58  * "OMEN", and it can use the thermal profile stuff if the "Feature" array
59  * contains "PerformanceControl".
60  */
61 static const char * const omen_thermal_profile_boards[] = {
62 	"84DA", "84DB", "84DC", "8574", "8575", "860A", "87B5", "8572", "8573",
63 	"8600", "8601", "8602", "8605", "8606", "8607", "8746", "8747", "8749",
64 	"874A", "8603", "8604", "8748", "886B", "886C", "878A", "878B", "878C",
65 	"88C8", "88CB", "8786", "8787", "8788", "88D1", "88D2", "88F4", "88FD",
66 	"88F5", "88F6", "88F7", "88FE", "88FF", "8900", "8901", "8902", "8912",
67 	"8917", "8918", "8949", "894A", "89EB", "8BAD", "8A42"
68 };
69 
70 /* DMI Board names of Omen laptops that are specifically set to be thermal
71  * profile version 0 by the Omen Command Center app, regardless of what
72  * the get system design information WMI call returns
73  */
74 static const char * const omen_thermal_profile_force_v0_boards[] = {
75 	"8607", "8746", "8747", "8749", "874A", "8748"
76 };
77 
78 /* DMI board names of Omen laptops that have a thermal profile timer which will
79  * cause the embedded controller to set the thermal profile back to
80  * "balanced" when reaching zero.
81  */
82 static const char * const omen_timed_thermal_profile_boards[] = {
83 	"8BAD", "8A42"
84 };
85 
86 /* DMI Board names of Victus laptops */
87 static const char * const victus_thermal_profile_boards[] = {
88 	"8A25"
89 };
90 
91 enum hp_wmi_radio {
92 	HPWMI_WIFI	= 0x0,
93 	HPWMI_BLUETOOTH	= 0x1,
94 	HPWMI_WWAN	= 0x2,
95 	HPWMI_GPS	= 0x3,
96 };
97 
98 enum hp_wmi_event_ids {
99 	HPWMI_DOCK_EVENT		= 0x01,
100 	HPWMI_PARK_HDD			= 0x02,
101 	HPWMI_SMART_ADAPTER		= 0x03,
102 	HPWMI_BEZEL_BUTTON		= 0x04,
103 	HPWMI_WIRELESS			= 0x05,
104 	HPWMI_CPU_BATTERY_THROTTLE	= 0x06,
105 	HPWMI_LOCK_SWITCH		= 0x07,
106 	HPWMI_LID_SWITCH		= 0x08,
107 	HPWMI_SCREEN_ROTATION		= 0x09,
108 	HPWMI_COOLSENSE_SYSTEM_MOBILE	= 0x0A,
109 	HPWMI_COOLSENSE_SYSTEM_HOT	= 0x0B,
110 	HPWMI_PROXIMITY_SENSOR		= 0x0C,
111 	HPWMI_BACKLIT_KB_BRIGHTNESS	= 0x0D,
112 	HPWMI_PEAKSHIFT_PERIOD		= 0x0F,
113 	HPWMI_BATTERY_CHARGE_PERIOD	= 0x10,
114 	HPWMI_SANITIZATION_MODE		= 0x17,
115 	HPWMI_CAMERA_TOGGLE		= 0x1A,
116 	HPWMI_OMEN_KEY			= 0x1D,
117 	HPWMI_SMART_EXPERIENCE_APP	= 0x21,
118 };
119 
120 /*
121  * struct bios_args buffer is dynamically allocated.  New WMI command types
122  * were introduced that exceeds 128-byte data size.  Changes to handle
123  * the data size allocation scheme were kept in hp_wmi_perform_qurey function.
124  */
125 struct bios_args {
126 	u32 signature;
127 	u32 command;
128 	u32 commandtype;
129 	u32 datasize;
130 	u8 data[];
131 };
132 
133 enum hp_wmi_commandtype {
134 	HPWMI_DISPLAY_QUERY		= 0x01,
135 	HPWMI_HDDTEMP_QUERY		= 0x02,
136 	HPWMI_ALS_QUERY			= 0x03,
137 	HPWMI_HARDWARE_QUERY		= 0x04,
138 	HPWMI_WIRELESS_QUERY		= 0x05,
139 	HPWMI_BATTERY_QUERY		= 0x07,
140 	HPWMI_BIOS_QUERY		= 0x09,
141 	HPWMI_FEATURE_QUERY		= 0x0b,
142 	HPWMI_HOTKEY_QUERY		= 0x0c,
143 	HPWMI_FEATURE2_QUERY		= 0x0d,
144 	HPWMI_WIRELESS2_QUERY		= 0x1b,
145 	HPWMI_POSTCODEERROR_QUERY	= 0x2a,
146 	HPWMI_SYSTEM_DEVICE_MODE	= 0x40,
147 	HPWMI_THERMAL_PROFILE_QUERY	= 0x4c,
148 };
149 
150 enum hp_wmi_gm_commandtype {
151 	HPWMI_FAN_SPEED_GET_QUERY = 0x11,
152 	HPWMI_SET_PERFORMANCE_MODE = 0x1A,
153 	HPWMI_FAN_SPEED_MAX_GET_QUERY = 0x26,
154 	HPWMI_FAN_SPEED_MAX_SET_QUERY = 0x27,
155 	HPWMI_GET_SYSTEM_DESIGN_DATA = 0x28,
156 };
157 
158 enum hp_wmi_command {
159 	HPWMI_READ	= 0x01,
160 	HPWMI_WRITE	= 0x02,
161 	HPWMI_ODM	= 0x03,
162 	HPWMI_GM	= 0x20008,
163 };
164 
165 enum hp_wmi_hardware_mask {
166 	HPWMI_DOCK_MASK		= 0x01,
167 	HPWMI_TABLET_MASK	= 0x04,
168 };
169 
170 struct bios_return {
171 	u32 sigpass;
172 	u32 return_code;
173 };
174 
175 enum hp_return_value {
176 	HPWMI_RET_WRONG_SIGNATURE	= 0x02,
177 	HPWMI_RET_UNKNOWN_COMMAND	= 0x03,
178 	HPWMI_RET_UNKNOWN_CMDTYPE	= 0x04,
179 	HPWMI_RET_INVALID_PARAMETERS	= 0x05,
180 };
181 
182 enum hp_wireless2_bits {
183 	HPWMI_POWER_STATE	= 0x01,
184 	HPWMI_POWER_SOFT	= 0x02,
185 	HPWMI_POWER_BIOS	= 0x04,
186 	HPWMI_POWER_HARD	= 0x08,
187 	HPWMI_POWER_FW_OR_HW	= HPWMI_POWER_BIOS | HPWMI_POWER_HARD,
188 };
189 
190 enum hp_thermal_profile_omen_v0 {
191 	HP_OMEN_V0_THERMAL_PROFILE_DEFAULT     = 0x00,
192 	HP_OMEN_V0_THERMAL_PROFILE_PERFORMANCE = 0x01,
193 	HP_OMEN_V0_THERMAL_PROFILE_COOL        = 0x02,
194 };
195 
196 enum hp_thermal_profile_omen_v1 {
197 	HP_OMEN_V1_THERMAL_PROFILE_DEFAULT	= 0x30,
198 	HP_OMEN_V1_THERMAL_PROFILE_PERFORMANCE	= 0x31,
199 	HP_OMEN_V1_THERMAL_PROFILE_COOL		= 0x50,
200 };
201 
202 enum hp_thermal_profile_omen_flags {
203 	HP_OMEN_EC_FLAGS_TURBO		= 0x04,
204 	HP_OMEN_EC_FLAGS_NOTIMER	= 0x02,
205 	HP_OMEN_EC_FLAGS_JUSTSET	= 0x01,
206 };
207 
208 enum hp_thermal_profile_victus {
209 	HP_VICTUS_THERMAL_PROFILE_DEFAULT		= 0x00,
210 	HP_VICTUS_THERMAL_PROFILE_PERFORMANCE		= 0x01,
211 	HP_VICTUS_THERMAL_PROFILE_QUIET			= 0x03,
212 };
213 
214 enum hp_thermal_profile {
215 	HP_THERMAL_PROFILE_PERFORMANCE	= 0x00,
216 	HP_THERMAL_PROFILE_DEFAULT		= 0x01,
217 	HP_THERMAL_PROFILE_COOL			= 0x02,
218 	HP_THERMAL_PROFILE_QUIET		= 0x03,
219 };
220 
221 #define IS_HWBLOCKED(x) ((x & HPWMI_POWER_FW_OR_HW) != HPWMI_POWER_FW_OR_HW)
222 #define IS_SWBLOCKED(x) !(x & HPWMI_POWER_SOFT)
223 
224 struct bios_rfkill2_device_state {
225 	u8 radio_type;
226 	u8 bus_type;
227 	u16 vendor_id;
228 	u16 product_id;
229 	u16 subsys_vendor_id;
230 	u16 subsys_product_id;
231 	u8 rfkill_id;
232 	u8 power;
233 	u8 unknown[4];
234 };
235 
236 /* 7 devices fit into the 128 byte buffer */
237 #define HPWMI_MAX_RFKILL2_DEVICES	7
238 
239 struct bios_rfkill2_state {
240 	u8 unknown[7];
241 	u8 count;
242 	u8 pad[8];
243 	struct bios_rfkill2_device_state device[HPWMI_MAX_RFKILL2_DEVICES];
244 };
245 
246 static const struct key_entry hp_wmi_keymap[] = {
247 	{ KE_KEY, 0x02,    { KEY_BRIGHTNESSUP } },
248 	{ KE_KEY, 0x03,    { KEY_BRIGHTNESSDOWN } },
249 	{ KE_KEY, 0x270,   { KEY_MICMUTE } },
250 	{ KE_KEY, 0x20e6,  { KEY_PROG1 } },
251 	{ KE_KEY, 0x20e8,  { KEY_MEDIA } },
252 	{ KE_KEY, 0x2142,  { KEY_MEDIA } },
253 	{ KE_KEY, 0x213b,  { KEY_INFO } },
254 	{ KE_KEY, 0x2169,  { KEY_ROTATE_DISPLAY } },
255 	{ KE_KEY, 0x216a,  { KEY_SETUP } },
256 	{ KE_IGNORE, 0x21a4,  }, /* Win Lock On */
257 	{ KE_IGNORE, 0x121a4, }, /* Win Lock Off */
258 	{ KE_KEY, 0x21a5,  { KEY_PROG2 } }, /* HP Omen Key */
259 	{ KE_KEY, 0x21a7,  { KEY_FN_ESC } },
260 	{ KE_KEY, 0x21a8,  { KEY_PROG2 } }, /* HP Envy x360 programmable key */
261 	{ KE_KEY, 0x21a9,  { KEY_TOUCHPAD_OFF } },
262 	{ KE_KEY, 0x121a9, { KEY_TOUCHPAD_ON } },
263 	{ KE_KEY, 0x231b,  { KEY_HELP } },
264 	{ KE_END, 0 }
265 };
266 
267 /*
268  * Mutex for the active_platform_profile variable,
269  * see omen_powersource_event.
270  */
271 static DEFINE_MUTEX(active_platform_profile_lock);
272 
273 static struct input_dev *hp_wmi_input_dev;
274 static struct input_dev *camera_shutter_input_dev;
275 static struct platform_device *hp_wmi_platform_dev;
276 static struct platform_profile_handler platform_profile_handler;
277 static struct notifier_block platform_power_source_nb;
278 static enum platform_profile_option active_platform_profile;
279 static bool platform_profile_support;
280 static bool zero_insize_support;
281 
282 static struct rfkill *wifi_rfkill;
283 static struct rfkill *bluetooth_rfkill;
284 static struct rfkill *wwan_rfkill;
285 
286 struct rfkill2_device {
287 	u8 id;
288 	int num;
289 	struct rfkill *rfkill;
290 };
291 
292 static int rfkill2_count;
293 static struct rfkill2_device rfkill2[HPWMI_MAX_RFKILL2_DEVICES];
294 
295 /*
296  * Chassis Types values were obtained from SMBIOS reference
297  * specification version 3.00. A complete list of system enclosures
298  * and chassis types is available on Table 17.
299  */
300 static const char * const tablet_chassis_types[] = {
301 	"30", /* Tablet*/
302 	"31", /* Convertible */
303 	"32"  /* Detachable */
304 };
305 
306 #define DEVICE_MODE_TABLET	0x06
307 
308 /* map output size to the corresponding WMI method id */
encode_outsize_for_pvsz(int outsize)309 static inline int encode_outsize_for_pvsz(int outsize)
310 {
311 	if (outsize > 4096)
312 		return -EINVAL;
313 	if (outsize > 1024)
314 		return 5;
315 	if (outsize > 128)
316 		return 4;
317 	if (outsize > 4)
318 		return 3;
319 	if (outsize > 0)
320 		return 2;
321 	return 1;
322 }
323 
324 /*
325  * hp_wmi_perform_query
326  *
327  * query:	The commandtype (enum hp_wmi_commandtype)
328  * write:	The command (enum hp_wmi_command)
329  * buffer:	Buffer used as input and/or output
330  * insize:	Size of input buffer
331  * outsize:	Size of output buffer
332  *
333  * returns zero on success
334  *         an HP WMI query specific error code (which is positive)
335  *         -EINVAL if the query was not successful at all
336  *         -EINVAL if the output buffer size exceeds buffersize
337  *
338  * Note: The buffersize must at least be the maximum of the input and output
339  *       size. E.g. Battery info query is defined to have 1 byte input
340  *       and 128 byte output. The caller would do:
341  *       buffer = kzalloc(128, GFP_KERNEL);
342  *       ret = hp_wmi_perform_query(HPWMI_BATTERY_QUERY, HPWMI_READ, buffer, 1, 128)
343  */
hp_wmi_perform_query(int query,enum hp_wmi_command command,void * buffer,int insize,int outsize)344 static int hp_wmi_perform_query(int query, enum hp_wmi_command command,
345 				void *buffer, int insize, int outsize)
346 {
347 	struct acpi_buffer input, output = { ACPI_ALLOCATE_BUFFER, NULL };
348 	struct bios_return *bios_return;
349 	union acpi_object *obj = NULL;
350 	struct bios_args *args = NULL;
351 	int mid, actual_insize, actual_outsize;
352 	size_t bios_args_size;
353 	int ret;
354 
355 	mid = encode_outsize_for_pvsz(outsize);
356 	if (WARN_ON(mid < 0))
357 		return mid;
358 
359 	actual_insize = max(insize, 128);
360 	bios_args_size = struct_size(args, data, actual_insize);
361 	args = kmalloc(bios_args_size, GFP_KERNEL);
362 	if (!args)
363 		return -ENOMEM;
364 
365 	input.length = bios_args_size;
366 	input.pointer = args;
367 
368 	args->signature = 0x55434553;
369 	args->command = command;
370 	args->commandtype = query;
371 	args->datasize = insize;
372 	memcpy(args->data, buffer, flex_array_size(args, data, insize));
373 
374 	ret = wmi_evaluate_method(HPWMI_BIOS_GUID, 0, mid, &input, &output);
375 	if (ret)
376 		goto out_free;
377 
378 	obj = output.pointer;
379 	if (!obj) {
380 		ret = -EINVAL;
381 		goto out_free;
382 	}
383 
384 	if (obj->type != ACPI_TYPE_BUFFER) {
385 		pr_warn("query 0x%x returned an invalid object 0x%x\n", query, ret);
386 		ret = -EINVAL;
387 		goto out_free;
388 	}
389 
390 	bios_return = (struct bios_return *)obj->buffer.pointer;
391 	ret = bios_return->return_code;
392 
393 	if (ret) {
394 		if (ret != HPWMI_RET_UNKNOWN_COMMAND &&
395 		    ret != HPWMI_RET_UNKNOWN_CMDTYPE)
396 			pr_warn("query 0x%x returned error 0x%x\n", query, ret);
397 		goto out_free;
398 	}
399 
400 	/* Ignore output data of zero size */
401 	if (!outsize)
402 		goto out_free;
403 
404 	actual_outsize = min(outsize, (int)(obj->buffer.length - sizeof(*bios_return)));
405 	memcpy(buffer, obj->buffer.pointer + sizeof(*bios_return), actual_outsize);
406 	memset(buffer + actual_outsize, 0, outsize - actual_outsize);
407 
408 out_free:
409 	kfree(obj);
410 	kfree(args);
411 	return ret;
412 }
413 
hp_wmi_get_fan_speed(int fan)414 static int hp_wmi_get_fan_speed(int fan)
415 {
416 	u8 fsh, fsl;
417 	char fan_data[4] = { fan, 0, 0, 0 };
418 
419 	int ret = hp_wmi_perform_query(HPWMI_FAN_SPEED_GET_QUERY, HPWMI_GM,
420 				       &fan_data, sizeof(char),
421 				       sizeof(fan_data));
422 
423 	if (ret != 0)
424 		return -EINVAL;
425 
426 	fsh = fan_data[2];
427 	fsl = fan_data[3];
428 
429 	return (fsh << 8) | fsl;
430 }
431 
hp_wmi_read_int(int query)432 static int hp_wmi_read_int(int query)
433 {
434 	int val = 0, ret;
435 
436 	ret = hp_wmi_perform_query(query, HPWMI_READ, &val,
437 				   zero_if_sup(val), sizeof(val));
438 
439 	if (ret)
440 		return ret < 0 ? ret : -EINVAL;
441 
442 	return val;
443 }
444 
hp_wmi_get_dock_state(void)445 static int hp_wmi_get_dock_state(void)
446 {
447 	int state = hp_wmi_read_int(HPWMI_HARDWARE_QUERY);
448 
449 	if (state < 0)
450 		return state;
451 
452 	return !!(state & HPWMI_DOCK_MASK);
453 }
454 
hp_wmi_get_tablet_mode(void)455 static int hp_wmi_get_tablet_mode(void)
456 {
457 	char system_device_mode[4] = { 0 };
458 	const char *chassis_type;
459 	bool tablet_found;
460 	int ret;
461 
462 	chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
463 	if (!chassis_type)
464 		return -ENODEV;
465 
466 	tablet_found = match_string(tablet_chassis_types,
467 				    ARRAY_SIZE(tablet_chassis_types),
468 				    chassis_type) >= 0;
469 	if (!tablet_found)
470 		return -ENODEV;
471 
472 	ret = hp_wmi_perform_query(HPWMI_SYSTEM_DEVICE_MODE, HPWMI_READ,
473 				   system_device_mode, zero_if_sup(system_device_mode),
474 				   sizeof(system_device_mode));
475 	if (ret < 0)
476 		return ret;
477 
478 	return system_device_mode[0] == DEVICE_MODE_TABLET;
479 }
480 
omen_thermal_profile_set(int mode)481 static int omen_thermal_profile_set(int mode)
482 {
483 	/* The Omen Control Center actively sets the first byte of the buffer to
484 	 * 255, so let's mimic this behaviour to be as close as possible to
485 	 * the original software.
486 	 */
487 	char buffer[2] = {-1, mode};
488 	int ret;
489 
490 	ret = hp_wmi_perform_query(HPWMI_SET_PERFORMANCE_MODE, HPWMI_GM,
491 				   &buffer, sizeof(buffer), 0);
492 
493 	if (ret)
494 		return ret < 0 ? ret : -EINVAL;
495 
496 	return mode;
497 }
498 
is_omen_thermal_profile(void)499 static bool is_omen_thermal_profile(void)
500 {
501 	const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
502 
503 	if (!board_name)
504 		return false;
505 
506 	return match_string(omen_thermal_profile_boards,
507 			    ARRAY_SIZE(omen_thermal_profile_boards),
508 			    board_name) >= 0;
509 }
510 
omen_get_thermal_policy_version(void)511 static int omen_get_thermal_policy_version(void)
512 {
513 	unsigned char buffer[8] = { 0 };
514 	int ret;
515 
516 	const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
517 
518 	if (board_name) {
519 		int matches = match_string(omen_thermal_profile_force_v0_boards,
520 			ARRAY_SIZE(omen_thermal_profile_force_v0_boards),
521 			board_name);
522 		if (matches >= 0)
523 			return 0;
524 	}
525 
526 	ret = hp_wmi_perform_query(HPWMI_GET_SYSTEM_DESIGN_DATA, HPWMI_GM,
527 				   &buffer, sizeof(buffer), sizeof(buffer));
528 
529 	if (ret)
530 		return ret < 0 ? ret : -EINVAL;
531 
532 	return buffer[3];
533 }
534 
omen_thermal_profile_get(void)535 static int omen_thermal_profile_get(void)
536 {
537 	u8 data;
538 
539 	int ret = ec_read(HP_OMEN_EC_THERMAL_PROFILE_OFFSET, &data);
540 
541 	if (ret)
542 		return ret;
543 
544 	return data;
545 }
546 
hp_wmi_fan_speed_max_set(int enabled)547 static int hp_wmi_fan_speed_max_set(int enabled)
548 {
549 	int ret;
550 
551 	ret = hp_wmi_perform_query(HPWMI_FAN_SPEED_MAX_SET_QUERY, HPWMI_GM,
552 				   &enabled, sizeof(enabled), 0);
553 
554 	if (ret)
555 		return ret < 0 ? ret : -EINVAL;
556 
557 	return enabled;
558 }
559 
hp_wmi_fan_speed_max_get(void)560 static int hp_wmi_fan_speed_max_get(void)
561 {
562 	int val = 0, ret;
563 
564 	ret = hp_wmi_perform_query(HPWMI_FAN_SPEED_MAX_GET_QUERY, HPWMI_GM,
565 				   &val, zero_if_sup(val), sizeof(val));
566 
567 	if (ret)
568 		return ret < 0 ? ret : -EINVAL;
569 
570 	return val;
571 }
572 
hp_wmi_bios_2008_later(void)573 static int __init hp_wmi_bios_2008_later(void)
574 {
575 	int state = 0;
576 	int ret = hp_wmi_perform_query(HPWMI_FEATURE_QUERY, HPWMI_READ, &state,
577 				       zero_if_sup(state), sizeof(state));
578 	if (!ret)
579 		return 1;
580 
581 	return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO;
582 }
583 
hp_wmi_bios_2009_later(void)584 static int __init hp_wmi_bios_2009_later(void)
585 {
586 	u8 state[128];
587 	int ret = hp_wmi_perform_query(HPWMI_FEATURE2_QUERY, HPWMI_READ, &state,
588 				       zero_if_sup(state), sizeof(state));
589 	if (!ret)
590 		return 1;
591 
592 	return (ret == HPWMI_RET_UNKNOWN_CMDTYPE) ? 0 : -ENXIO;
593 }
594 
hp_wmi_enable_hotkeys(void)595 static int __init hp_wmi_enable_hotkeys(void)
596 {
597 	int value = 0x6e;
598 	int ret = hp_wmi_perform_query(HPWMI_BIOS_QUERY, HPWMI_WRITE, &value,
599 				       sizeof(value), 0);
600 
601 	return ret <= 0 ? ret : -EINVAL;
602 }
603 
hp_wmi_set_block(void * data,bool blocked)604 static int hp_wmi_set_block(void *data, bool blocked)
605 {
606 	enum hp_wmi_radio r = (long)data;
607 	int query = BIT(r + 8) | ((!blocked) << r);
608 	int ret;
609 
610 	ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, HPWMI_WRITE,
611 				   &query, sizeof(query), 0);
612 
613 	return ret <= 0 ? ret : -EINVAL;
614 }
615 
616 static const struct rfkill_ops hp_wmi_rfkill_ops = {
617 	.set_block = hp_wmi_set_block,
618 };
619 
hp_wmi_get_sw_state(enum hp_wmi_radio r)620 static bool hp_wmi_get_sw_state(enum hp_wmi_radio r)
621 {
622 	int mask = 0x200 << (r * 8);
623 
624 	int wireless = hp_wmi_read_int(HPWMI_WIRELESS_QUERY);
625 
626 	/* TBD: Pass error */
627 	WARN_ONCE(wireless < 0, "error executing HPWMI_WIRELESS_QUERY");
628 
629 	return !(wireless & mask);
630 }
631 
hp_wmi_get_hw_state(enum hp_wmi_radio r)632 static bool hp_wmi_get_hw_state(enum hp_wmi_radio r)
633 {
634 	int mask = 0x800 << (r * 8);
635 
636 	int wireless = hp_wmi_read_int(HPWMI_WIRELESS_QUERY);
637 
638 	/* TBD: Pass error */
639 	WARN_ONCE(wireless < 0, "error executing HPWMI_WIRELESS_QUERY");
640 
641 	return !(wireless & mask);
642 }
643 
hp_wmi_rfkill2_set_block(void * data,bool blocked)644 static int hp_wmi_rfkill2_set_block(void *data, bool blocked)
645 {
646 	int rfkill_id = (int)(long)data;
647 	char buffer[4] = { 0x01, 0x00, rfkill_id, !blocked };
648 	int ret;
649 
650 	ret = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_WRITE,
651 				   buffer, sizeof(buffer), 0);
652 
653 	return ret <= 0 ? ret : -EINVAL;
654 }
655 
656 static const struct rfkill_ops hp_wmi_rfkill2_ops = {
657 	.set_block = hp_wmi_rfkill2_set_block,
658 };
659 
hp_wmi_rfkill2_refresh(void)660 static int hp_wmi_rfkill2_refresh(void)
661 {
662 	struct bios_rfkill2_state state;
663 	int err, i;
664 
665 	err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_READ, &state,
666 				   zero_if_sup(state), sizeof(state));
667 	if (err)
668 		return err;
669 
670 	for (i = 0; i < rfkill2_count; i++) {
671 		int num = rfkill2[i].num;
672 		struct bios_rfkill2_device_state *devstate;
673 
674 		devstate = &state.device[num];
675 
676 		if (num >= state.count ||
677 		    devstate->rfkill_id != rfkill2[i].id) {
678 			pr_warn("power configuration of the wireless devices unexpectedly changed\n");
679 			continue;
680 		}
681 
682 		rfkill_set_states(rfkill2[i].rfkill,
683 				  IS_SWBLOCKED(devstate->power),
684 				  IS_HWBLOCKED(devstate->power));
685 	}
686 
687 	return 0;
688 }
689 
display_show(struct device * dev,struct device_attribute * attr,char * buf)690 static ssize_t display_show(struct device *dev, struct device_attribute *attr,
691 			    char *buf)
692 {
693 	int value = hp_wmi_read_int(HPWMI_DISPLAY_QUERY);
694 
695 	if (value < 0)
696 		return value;
697 	return sysfs_emit(buf, "%d\n", value);
698 }
699 
hddtemp_show(struct device * dev,struct device_attribute * attr,char * buf)700 static ssize_t hddtemp_show(struct device *dev, struct device_attribute *attr,
701 			    char *buf)
702 {
703 	int value = hp_wmi_read_int(HPWMI_HDDTEMP_QUERY);
704 
705 	if (value < 0)
706 		return value;
707 	return sysfs_emit(buf, "%d\n", value);
708 }
709 
als_show(struct device * dev,struct device_attribute * attr,char * buf)710 static ssize_t als_show(struct device *dev, struct device_attribute *attr,
711 			char *buf)
712 {
713 	int value = hp_wmi_read_int(HPWMI_ALS_QUERY);
714 
715 	if (value < 0)
716 		return value;
717 	return sysfs_emit(buf, "%d\n", value);
718 }
719 
dock_show(struct device * dev,struct device_attribute * attr,char * buf)720 static ssize_t dock_show(struct device *dev, struct device_attribute *attr,
721 			 char *buf)
722 {
723 	int value = hp_wmi_get_dock_state();
724 
725 	if (value < 0)
726 		return value;
727 	return sysfs_emit(buf, "%d\n", value);
728 }
729 
tablet_show(struct device * dev,struct device_attribute * attr,char * buf)730 static ssize_t tablet_show(struct device *dev, struct device_attribute *attr,
731 			   char *buf)
732 {
733 	int value = hp_wmi_get_tablet_mode();
734 
735 	if (value < 0)
736 		return value;
737 	return sysfs_emit(buf, "%d\n", value);
738 }
739 
postcode_show(struct device * dev,struct device_attribute * attr,char * buf)740 static ssize_t postcode_show(struct device *dev, struct device_attribute *attr,
741 			     char *buf)
742 {
743 	/* Get the POST error code of previous boot failure. */
744 	int value = hp_wmi_read_int(HPWMI_POSTCODEERROR_QUERY);
745 
746 	if (value < 0)
747 		return value;
748 	return sysfs_emit(buf, "0x%x\n", value);
749 }
750 
als_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)751 static ssize_t als_store(struct device *dev, struct device_attribute *attr,
752 			 const char *buf, size_t count)
753 {
754 	u32 tmp;
755 	int ret;
756 
757 	ret = kstrtou32(buf, 10, &tmp);
758 	if (ret)
759 		return ret;
760 
761 	ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, HPWMI_WRITE, &tmp,
762 				       sizeof(tmp), 0);
763 	if (ret)
764 		return ret < 0 ? ret : -EINVAL;
765 
766 	return count;
767 }
768 
postcode_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)769 static ssize_t postcode_store(struct device *dev, struct device_attribute *attr,
770 			      const char *buf, size_t count)
771 {
772 	u32 tmp = 1;
773 	bool clear;
774 	int ret;
775 
776 	ret = kstrtobool(buf, &clear);
777 	if (ret)
778 		return ret;
779 
780 	if (clear == false)
781 		return -EINVAL;
782 
783 	/* Clear the POST error code. It is kept until cleared. */
784 	ret = hp_wmi_perform_query(HPWMI_POSTCODEERROR_QUERY, HPWMI_WRITE, &tmp,
785 				       sizeof(tmp), 0);
786 	if (ret)
787 		return ret < 0 ? ret : -EINVAL;
788 
789 	return count;
790 }
791 
camera_shutter_input_setup(void)792 static int camera_shutter_input_setup(void)
793 {
794 	int err;
795 
796 	camera_shutter_input_dev = input_allocate_device();
797 	if (!camera_shutter_input_dev)
798 		return -ENOMEM;
799 
800 	camera_shutter_input_dev->name = "HP WMI camera shutter";
801 	camera_shutter_input_dev->phys = "wmi/input1";
802 	camera_shutter_input_dev->id.bustype = BUS_HOST;
803 
804 	__set_bit(EV_SW, camera_shutter_input_dev->evbit);
805 	__set_bit(SW_CAMERA_LENS_COVER, camera_shutter_input_dev->swbit);
806 
807 	err = input_register_device(camera_shutter_input_dev);
808 	if (err)
809 		goto err_free_dev;
810 
811 	return 0;
812 
813  err_free_dev:
814 	input_free_device(camera_shutter_input_dev);
815 	camera_shutter_input_dev = NULL;
816 	return err;
817 }
818 
819 static DEVICE_ATTR_RO(display);
820 static DEVICE_ATTR_RO(hddtemp);
821 static DEVICE_ATTR_RW(als);
822 static DEVICE_ATTR_RO(dock);
823 static DEVICE_ATTR_RO(tablet);
824 static DEVICE_ATTR_RW(postcode);
825 
826 static struct attribute *hp_wmi_attrs[] = {
827 	&dev_attr_display.attr,
828 	&dev_attr_hddtemp.attr,
829 	&dev_attr_als.attr,
830 	&dev_attr_dock.attr,
831 	&dev_attr_tablet.attr,
832 	&dev_attr_postcode.attr,
833 	NULL,
834 };
835 ATTRIBUTE_GROUPS(hp_wmi);
836 
hp_wmi_notify(union acpi_object * obj,void * context)837 static void hp_wmi_notify(union acpi_object *obj, void *context)
838 {
839 	u32 event_id, event_data;
840 	u32 *location;
841 	int key_code;
842 
843 	if (!obj)
844 		return;
845 	if (obj->type != ACPI_TYPE_BUFFER) {
846 		pr_info("Unknown response received %d\n", obj->type);
847 		return;
848 	}
849 
850 	/*
851 	 * Depending on ACPI version the concatenation of id and event data
852 	 * inside _WED function will result in a 8 or 16 byte buffer.
853 	 */
854 	location = (u32 *)obj->buffer.pointer;
855 	if (obj->buffer.length == 8) {
856 		event_id = *location;
857 		event_data = *(location + 1);
858 	} else if (obj->buffer.length == 16) {
859 		event_id = *location;
860 		event_data = *(location + 2);
861 	} else {
862 		pr_info("Unknown buffer length %d\n", obj->buffer.length);
863 		return;
864 	}
865 
866 	switch (event_id) {
867 	case HPWMI_DOCK_EVENT:
868 		if (test_bit(SW_DOCK, hp_wmi_input_dev->swbit))
869 			input_report_switch(hp_wmi_input_dev, SW_DOCK,
870 					    hp_wmi_get_dock_state());
871 		if (test_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit))
872 			input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
873 					    hp_wmi_get_tablet_mode());
874 		input_sync(hp_wmi_input_dev);
875 		break;
876 	case HPWMI_PARK_HDD:
877 		break;
878 	case HPWMI_SMART_ADAPTER:
879 		break;
880 	case HPWMI_BEZEL_BUTTON:
881 		key_code = hp_wmi_read_int(HPWMI_HOTKEY_QUERY);
882 		if (key_code < 0)
883 			break;
884 
885 		if (!sparse_keymap_report_event(hp_wmi_input_dev,
886 						key_code, 1, true))
887 			pr_info("Unknown key code - 0x%x\n", key_code);
888 		break;
889 	case HPWMI_OMEN_KEY:
890 		if (event_data) /* Only should be true for HP Omen */
891 			key_code = event_data;
892 		else
893 			key_code = hp_wmi_read_int(HPWMI_HOTKEY_QUERY);
894 
895 		if (!sparse_keymap_report_event(hp_wmi_input_dev,
896 						key_code, 1, true))
897 			pr_info("Unknown key code - 0x%x\n", key_code);
898 		break;
899 	case HPWMI_WIRELESS:
900 		if (rfkill2_count) {
901 			hp_wmi_rfkill2_refresh();
902 			break;
903 		}
904 
905 		if (wifi_rfkill)
906 			rfkill_set_states(wifi_rfkill,
907 					  hp_wmi_get_sw_state(HPWMI_WIFI),
908 					  hp_wmi_get_hw_state(HPWMI_WIFI));
909 		if (bluetooth_rfkill)
910 			rfkill_set_states(bluetooth_rfkill,
911 					  hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
912 					  hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
913 		if (wwan_rfkill)
914 			rfkill_set_states(wwan_rfkill,
915 					  hp_wmi_get_sw_state(HPWMI_WWAN),
916 					  hp_wmi_get_hw_state(HPWMI_WWAN));
917 		break;
918 	case HPWMI_CPU_BATTERY_THROTTLE:
919 		pr_info("Unimplemented CPU throttle because of 3 Cell battery event detected\n");
920 		break;
921 	case HPWMI_LOCK_SWITCH:
922 		break;
923 	case HPWMI_LID_SWITCH:
924 		break;
925 	case HPWMI_SCREEN_ROTATION:
926 		break;
927 	case HPWMI_COOLSENSE_SYSTEM_MOBILE:
928 		break;
929 	case HPWMI_COOLSENSE_SYSTEM_HOT:
930 		break;
931 	case HPWMI_PROXIMITY_SENSOR:
932 		break;
933 	case HPWMI_BACKLIT_KB_BRIGHTNESS:
934 		break;
935 	case HPWMI_PEAKSHIFT_PERIOD:
936 		break;
937 	case HPWMI_BATTERY_CHARGE_PERIOD:
938 		break;
939 	case HPWMI_SANITIZATION_MODE:
940 		break;
941 	case HPWMI_CAMERA_TOGGLE:
942 		if (!camera_shutter_input_dev)
943 			if (camera_shutter_input_setup()) {
944 				pr_err("Failed to setup camera shutter input device\n");
945 				break;
946 			}
947 		if (event_data == 0xff)
948 			input_report_switch(camera_shutter_input_dev, SW_CAMERA_LENS_COVER, 1);
949 		else if (event_data == 0xfe)
950 			input_report_switch(camera_shutter_input_dev, SW_CAMERA_LENS_COVER, 0);
951 		else
952 			pr_warn("Unknown camera shutter state - 0x%x\n", event_data);
953 		input_sync(camera_shutter_input_dev);
954 		break;
955 	case HPWMI_SMART_EXPERIENCE_APP:
956 		break;
957 	default:
958 		pr_info("Unknown event_id - %d - 0x%x\n", event_id, event_data);
959 		break;
960 	}
961 }
962 
hp_wmi_input_setup(void)963 static int __init hp_wmi_input_setup(void)
964 {
965 	acpi_status status;
966 	int err, val;
967 
968 	hp_wmi_input_dev = input_allocate_device();
969 	if (!hp_wmi_input_dev)
970 		return -ENOMEM;
971 
972 	hp_wmi_input_dev->name = "HP WMI hotkeys";
973 	hp_wmi_input_dev->phys = "wmi/input0";
974 	hp_wmi_input_dev->id.bustype = BUS_HOST;
975 
976 	__set_bit(EV_SW, hp_wmi_input_dev->evbit);
977 
978 	/* Dock */
979 	val = hp_wmi_get_dock_state();
980 	if (!(val < 0)) {
981 		__set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
982 		input_report_switch(hp_wmi_input_dev, SW_DOCK, val);
983 	}
984 
985 	/* Tablet mode */
986 	val = hp_wmi_get_tablet_mode();
987 	if (!(val < 0)) {
988 		__set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
989 		input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE, val);
990 	}
991 
992 	err = sparse_keymap_setup(hp_wmi_input_dev, hp_wmi_keymap, NULL);
993 	if (err)
994 		goto err_free_dev;
995 
996 	/* Set initial hardware state */
997 	input_sync(hp_wmi_input_dev);
998 
999 	if (!hp_wmi_bios_2009_later() && hp_wmi_bios_2008_later())
1000 		hp_wmi_enable_hotkeys();
1001 
1002 	status = wmi_install_notify_handler(HPWMI_EVENT_GUID, hp_wmi_notify, NULL);
1003 	if (ACPI_FAILURE(status)) {
1004 		err = -EIO;
1005 		goto err_free_dev;
1006 	}
1007 
1008 	err = input_register_device(hp_wmi_input_dev);
1009 	if (err)
1010 		goto err_uninstall_notifier;
1011 
1012 	return 0;
1013 
1014  err_uninstall_notifier:
1015 	wmi_remove_notify_handler(HPWMI_EVENT_GUID);
1016  err_free_dev:
1017 	input_free_device(hp_wmi_input_dev);
1018 	return err;
1019 }
1020 
hp_wmi_input_destroy(void)1021 static void hp_wmi_input_destroy(void)
1022 {
1023 	wmi_remove_notify_handler(HPWMI_EVENT_GUID);
1024 	input_unregister_device(hp_wmi_input_dev);
1025 }
1026 
hp_wmi_rfkill_setup(struct platform_device * device)1027 static int __init hp_wmi_rfkill_setup(struct platform_device *device)
1028 {
1029 	int err, wireless;
1030 
1031 	wireless = hp_wmi_read_int(HPWMI_WIRELESS_QUERY);
1032 	if (wireless < 0)
1033 		return wireless;
1034 
1035 	err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, HPWMI_WRITE, &wireless,
1036 				   sizeof(wireless), 0);
1037 	if (err)
1038 		return err;
1039 
1040 	if (wireless & 0x1) {
1041 		wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
1042 					   RFKILL_TYPE_WLAN,
1043 					   &hp_wmi_rfkill_ops,
1044 					   (void *) HPWMI_WIFI);
1045 		if (!wifi_rfkill)
1046 			return -ENOMEM;
1047 		rfkill_init_sw_state(wifi_rfkill,
1048 				     hp_wmi_get_sw_state(HPWMI_WIFI));
1049 		rfkill_set_hw_state(wifi_rfkill,
1050 				    hp_wmi_get_hw_state(HPWMI_WIFI));
1051 		err = rfkill_register(wifi_rfkill);
1052 		if (err)
1053 			goto register_wifi_error;
1054 	}
1055 
1056 	if (wireless & 0x2) {
1057 		bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
1058 						RFKILL_TYPE_BLUETOOTH,
1059 						&hp_wmi_rfkill_ops,
1060 						(void *) HPWMI_BLUETOOTH);
1061 		if (!bluetooth_rfkill) {
1062 			err = -ENOMEM;
1063 			goto register_bluetooth_error;
1064 		}
1065 		rfkill_init_sw_state(bluetooth_rfkill,
1066 				     hp_wmi_get_sw_state(HPWMI_BLUETOOTH));
1067 		rfkill_set_hw_state(bluetooth_rfkill,
1068 				    hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
1069 		err = rfkill_register(bluetooth_rfkill);
1070 		if (err)
1071 			goto register_bluetooth_error;
1072 	}
1073 
1074 	if (wireless & 0x4) {
1075 		wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
1076 					   RFKILL_TYPE_WWAN,
1077 					   &hp_wmi_rfkill_ops,
1078 					   (void *) HPWMI_WWAN);
1079 		if (!wwan_rfkill) {
1080 			err = -ENOMEM;
1081 			goto register_wwan_error;
1082 		}
1083 		rfkill_init_sw_state(wwan_rfkill,
1084 				     hp_wmi_get_sw_state(HPWMI_WWAN));
1085 		rfkill_set_hw_state(wwan_rfkill,
1086 				    hp_wmi_get_hw_state(HPWMI_WWAN));
1087 		err = rfkill_register(wwan_rfkill);
1088 		if (err)
1089 			goto register_wwan_error;
1090 	}
1091 
1092 	return 0;
1093 
1094 register_wwan_error:
1095 	rfkill_destroy(wwan_rfkill);
1096 	wwan_rfkill = NULL;
1097 	if (bluetooth_rfkill)
1098 		rfkill_unregister(bluetooth_rfkill);
1099 register_bluetooth_error:
1100 	rfkill_destroy(bluetooth_rfkill);
1101 	bluetooth_rfkill = NULL;
1102 	if (wifi_rfkill)
1103 		rfkill_unregister(wifi_rfkill);
1104 register_wifi_error:
1105 	rfkill_destroy(wifi_rfkill);
1106 	wifi_rfkill = NULL;
1107 	return err;
1108 }
1109 
hp_wmi_rfkill2_setup(struct platform_device * device)1110 static int __init hp_wmi_rfkill2_setup(struct platform_device *device)
1111 {
1112 	struct bios_rfkill2_state state;
1113 	int err, i;
1114 
1115 	err = hp_wmi_perform_query(HPWMI_WIRELESS2_QUERY, HPWMI_READ, &state,
1116 				   zero_if_sup(state), sizeof(state));
1117 	if (err)
1118 		return err < 0 ? err : -EINVAL;
1119 
1120 	if (state.count > HPWMI_MAX_RFKILL2_DEVICES) {
1121 		pr_warn("unable to parse 0x1b query output\n");
1122 		return -EINVAL;
1123 	}
1124 
1125 	for (i = 0; i < state.count; i++) {
1126 		struct rfkill *rfkill;
1127 		enum rfkill_type type;
1128 		char *name;
1129 
1130 		switch (state.device[i].radio_type) {
1131 		case HPWMI_WIFI:
1132 			type = RFKILL_TYPE_WLAN;
1133 			name = "hp-wifi";
1134 			break;
1135 		case HPWMI_BLUETOOTH:
1136 			type = RFKILL_TYPE_BLUETOOTH;
1137 			name = "hp-bluetooth";
1138 			break;
1139 		case HPWMI_WWAN:
1140 			type = RFKILL_TYPE_WWAN;
1141 			name = "hp-wwan";
1142 			break;
1143 		case HPWMI_GPS:
1144 			type = RFKILL_TYPE_GPS;
1145 			name = "hp-gps";
1146 			break;
1147 		default:
1148 			pr_warn("unknown device type 0x%x\n",
1149 				state.device[i].radio_type);
1150 			continue;
1151 		}
1152 
1153 		if (!state.device[i].vendor_id) {
1154 			pr_warn("zero device %d while %d reported\n",
1155 				i, state.count);
1156 			continue;
1157 		}
1158 
1159 		rfkill = rfkill_alloc(name, &device->dev, type,
1160 				      &hp_wmi_rfkill2_ops, (void *)(long)i);
1161 		if (!rfkill) {
1162 			err = -ENOMEM;
1163 			goto fail;
1164 		}
1165 
1166 		rfkill2[rfkill2_count].id = state.device[i].rfkill_id;
1167 		rfkill2[rfkill2_count].num = i;
1168 		rfkill2[rfkill2_count].rfkill = rfkill;
1169 
1170 		rfkill_init_sw_state(rfkill,
1171 				     IS_SWBLOCKED(state.device[i].power));
1172 		rfkill_set_hw_state(rfkill,
1173 				    IS_HWBLOCKED(state.device[i].power));
1174 
1175 		if (!(state.device[i].power & HPWMI_POWER_BIOS))
1176 			pr_info("device %s blocked by BIOS\n", name);
1177 
1178 		err = rfkill_register(rfkill);
1179 		if (err) {
1180 			rfkill_destroy(rfkill);
1181 			goto fail;
1182 		}
1183 
1184 		rfkill2_count++;
1185 	}
1186 
1187 	return 0;
1188 fail:
1189 	for (; rfkill2_count > 0; rfkill2_count--) {
1190 		rfkill_unregister(rfkill2[rfkill2_count - 1].rfkill);
1191 		rfkill_destroy(rfkill2[rfkill2_count - 1].rfkill);
1192 	}
1193 	return err;
1194 }
1195 
platform_profile_omen_get_ec(enum platform_profile_option * profile)1196 static int platform_profile_omen_get_ec(enum platform_profile_option *profile)
1197 {
1198 	int tp;
1199 
1200 	tp = omen_thermal_profile_get();
1201 	if (tp < 0)
1202 		return tp;
1203 
1204 	switch (tp) {
1205 	case HP_OMEN_V0_THERMAL_PROFILE_PERFORMANCE:
1206 	case HP_OMEN_V1_THERMAL_PROFILE_PERFORMANCE:
1207 		*profile = PLATFORM_PROFILE_PERFORMANCE;
1208 		break;
1209 	case HP_OMEN_V0_THERMAL_PROFILE_DEFAULT:
1210 	case HP_OMEN_V1_THERMAL_PROFILE_DEFAULT:
1211 		*profile = PLATFORM_PROFILE_BALANCED;
1212 		break;
1213 	case HP_OMEN_V0_THERMAL_PROFILE_COOL:
1214 	case HP_OMEN_V1_THERMAL_PROFILE_COOL:
1215 		*profile = PLATFORM_PROFILE_COOL;
1216 		break;
1217 	default:
1218 		return -EINVAL;
1219 	}
1220 
1221 	return 0;
1222 }
1223 
platform_profile_omen_get(struct platform_profile_handler * pprof,enum platform_profile_option * profile)1224 static int platform_profile_omen_get(struct platform_profile_handler *pprof,
1225 				     enum platform_profile_option *profile)
1226 {
1227 	/*
1228 	 * We directly return the stored platform profile, as the embedded
1229 	 * controller will not accept switching to the performance option when
1230 	 * the conditions are not met (e.g. the laptop is not plugged in).
1231 	 *
1232 	 * If we directly return what the EC reports, the platform profile will
1233 	 * immediately "switch back" to normal mode, which is against the
1234 	 * expected behaviour from a userspace point of view, as described in
1235 	 * the Platform Profile Section page of the kernel documentation.
1236 	 *
1237 	 * See also omen_powersource_event.
1238 	 */
1239 	guard(mutex)(&active_platform_profile_lock);
1240 	*profile = active_platform_profile;
1241 
1242 	return 0;
1243 }
1244 
has_omen_thermal_profile_ec_timer(void)1245 static bool has_omen_thermal_profile_ec_timer(void)
1246 {
1247 	const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
1248 
1249 	if (!board_name)
1250 		return false;
1251 
1252 	return match_string(omen_timed_thermal_profile_boards,
1253 			    ARRAY_SIZE(omen_timed_thermal_profile_boards),
1254 			    board_name) >= 0;
1255 }
1256 
omen_thermal_profile_ec_flags_set(enum hp_thermal_profile_omen_flags flags)1257 inline int omen_thermal_profile_ec_flags_set(enum hp_thermal_profile_omen_flags flags)
1258 {
1259 	return ec_write(HP_OMEN_EC_THERMAL_PROFILE_FLAGS_OFFSET, flags);
1260 }
1261 
omen_thermal_profile_ec_timer_set(u8 value)1262 inline int omen_thermal_profile_ec_timer_set(u8 value)
1263 {
1264 	return ec_write(HP_OMEN_EC_THERMAL_PROFILE_TIMER_OFFSET, value);
1265 }
1266 
platform_profile_omen_set_ec(enum platform_profile_option profile)1267 static int platform_profile_omen_set_ec(enum platform_profile_option profile)
1268 {
1269 	int err, tp, tp_version;
1270 	enum hp_thermal_profile_omen_flags flags = 0;
1271 
1272 	tp_version = omen_get_thermal_policy_version();
1273 
1274 	if (tp_version < 0 || tp_version > 1)
1275 		return -EOPNOTSUPP;
1276 
1277 	switch (profile) {
1278 	case PLATFORM_PROFILE_PERFORMANCE:
1279 		if (tp_version == 0)
1280 			tp = HP_OMEN_V0_THERMAL_PROFILE_PERFORMANCE;
1281 		else
1282 			tp = HP_OMEN_V1_THERMAL_PROFILE_PERFORMANCE;
1283 		break;
1284 	case PLATFORM_PROFILE_BALANCED:
1285 		if (tp_version == 0)
1286 			tp = HP_OMEN_V0_THERMAL_PROFILE_DEFAULT;
1287 		else
1288 			tp = HP_OMEN_V1_THERMAL_PROFILE_DEFAULT;
1289 		break;
1290 	case PLATFORM_PROFILE_COOL:
1291 		if (tp_version == 0)
1292 			tp = HP_OMEN_V0_THERMAL_PROFILE_COOL;
1293 		else
1294 			tp = HP_OMEN_V1_THERMAL_PROFILE_COOL;
1295 		break;
1296 	default:
1297 		return -EOPNOTSUPP;
1298 	}
1299 
1300 	err = omen_thermal_profile_set(tp);
1301 	if (err < 0)
1302 		return err;
1303 
1304 	if (has_omen_thermal_profile_ec_timer()) {
1305 		err = omen_thermal_profile_ec_timer_set(0);
1306 		if (err < 0)
1307 			return err;
1308 
1309 		if (profile == PLATFORM_PROFILE_PERFORMANCE)
1310 			flags = HP_OMEN_EC_FLAGS_NOTIMER |
1311 				HP_OMEN_EC_FLAGS_TURBO;
1312 
1313 		err = omen_thermal_profile_ec_flags_set(flags);
1314 		if (err < 0)
1315 			return err;
1316 	}
1317 
1318 	return 0;
1319 }
1320 
platform_profile_omen_set(struct platform_profile_handler * pprof,enum platform_profile_option profile)1321 static int platform_profile_omen_set(struct platform_profile_handler *pprof,
1322 				     enum platform_profile_option profile)
1323 {
1324 	int err;
1325 
1326 	guard(mutex)(&active_platform_profile_lock);
1327 
1328 	err = platform_profile_omen_set_ec(profile);
1329 	if (err < 0)
1330 		return err;
1331 
1332 	active_platform_profile = profile;
1333 
1334 	return 0;
1335 }
1336 
thermal_profile_get(void)1337 static int thermal_profile_get(void)
1338 {
1339 	return hp_wmi_read_int(HPWMI_THERMAL_PROFILE_QUERY);
1340 }
1341 
thermal_profile_set(int thermal_profile)1342 static int thermal_profile_set(int thermal_profile)
1343 {
1344 	return hp_wmi_perform_query(HPWMI_THERMAL_PROFILE_QUERY, HPWMI_WRITE, &thermal_profile,
1345 							   sizeof(thermal_profile), 0);
1346 }
1347 
hp_wmi_platform_profile_get(struct platform_profile_handler * pprof,enum platform_profile_option * profile)1348 static int hp_wmi_platform_profile_get(struct platform_profile_handler *pprof,
1349 					enum platform_profile_option *profile)
1350 {
1351 	int tp;
1352 
1353 	tp = thermal_profile_get();
1354 	if (tp < 0)
1355 		return tp;
1356 
1357 	switch (tp) {
1358 	case HP_THERMAL_PROFILE_PERFORMANCE:
1359 		*profile =  PLATFORM_PROFILE_PERFORMANCE;
1360 		break;
1361 	case HP_THERMAL_PROFILE_DEFAULT:
1362 		*profile =  PLATFORM_PROFILE_BALANCED;
1363 		break;
1364 	case HP_THERMAL_PROFILE_COOL:
1365 		*profile =  PLATFORM_PROFILE_COOL;
1366 		break;
1367 	case HP_THERMAL_PROFILE_QUIET:
1368 		*profile = PLATFORM_PROFILE_QUIET;
1369 		break;
1370 	default:
1371 		return -EINVAL;
1372 	}
1373 
1374 	return 0;
1375 }
1376 
hp_wmi_platform_profile_set(struct platform_profile_handler * pprof,enum platform_profile_option profile)1377 static int hp_wmi_platform_profile_set(struct platform_profile_handler *pprof,
1378 					enum platform_profile_option profile)
1379 {
1380 	int err, tp;
1381 
1382 	switch (profile) {
1383 	case PLATFORM_PROFILE_PERFORMANCE:
1384 		tp =  HP_THERMAL_PROFILE_PERFORMANCE;
1385 		break;
1386 	case PLATFORM_PROFILE_BALANCED:
1387 		tp =  HP_THERMAL_PROFILE_DEFAULT;
1388 		break;
1389 	case PLATFORM_PROFILE_COOL:
1390 		tp =  HP_THERMAL_PROFILE_COOL;
1391 		break;
1392 	case PLATFORM_PROFILE_QUIET:
1393 		tp = HP_THERMAL_PROFILE_QUIET;
1394 		break;
1395 	default:
1396 		return -EOPNOTSUPP;
1397 	}
1398 
1399 	err = thermal_profile_set(tp);
1400 	if (err)
1401 		return err;
1402 
1403 	return 0;
1404 }
1405 
is_victus_thermal_profile(void)1406 static bool is_victus_thermal_profile(void)
1407 {
1408 	const char *board_name = dmi_get_system_info(DMI_BOARD_NAME);
1409 
1410 	if (!board_name)
1411 		return false;
1412 
1413 	return match_string(victus_thermal_profile_boards,
1414 			    ARRAY_SIZE(victus_thermal_profile_boards),
1415 			    board_name) >= 0;
1416 }
1417 
platform_profile_victus_get_ec(enum platform_profile_option * profile)1418 static int platform_profile_victus_get_ec(enum platform_profile_option *profile)
1419 {
1420 	int tp;
1421 
1422 	tp = omen_thermal_profile_get();
1423 	if (tp < 0)
1424 		return tp;
1425 
1426 	switch (tp) {
1427 	case HP_VICTUS_THERMAL_PROFILE_PERFORMANCE:
1428 		*profile = PLATFORM_PROFILE_PERFORMANCE;
1429 		break;
1430 	case HP_VICTUS_THERMAL_PROFILE_DEFAULT:
1431 		*profile = PLATFORM_PROFILE_BALANCED;
1432 		break;
1433 	case HP_VICTUS_THERMAL_PROFILE_QUIET:
1434 		*profile = PLATFORM_PROFILE_QUIET;
1435 		break;
1436 	default:
1437 		return -EOPNOTSUPP;
1438 	}
1439 
1440 	return 0;
1441 }
1442 
platform_profile_victus_get(struct platform_profile_handler * pprof,enum platform_profile_option * profile)1443 static int platform_profile_victus_get(struct platform_profile_handler *pprof,
1444 				       enum platform_profile_option *profile)
1445 {
1446 	/* Same behaviour as platform_profile_omen_get */
1447 	return platform_profile_omen_get(pprof, profile);
1448 }
1449 
platform_profile_victus_set_ec(enum platform_profile_option profile)1450 static int platform_profile_victus_set_ec(enum platform_profile_option profile)
1451 {
1452 	int err, tp;
1453 
1454 	switch (profile) {
1455 	case PLATFORM_PROFILE_PERFORMANCE:
1456 		tp = HP_VICTUS_THERMAL_PROFILE_PERFORMANCE;
1457 		break;
1458 	case PLATFORM_PROFILE_BALANCED:
1459 		tp = HP_VICTUS_THERMAL_PROFILE_DEFAULT;
1460 		break;
1461 	case PLATFORM_PROFILE_QUIET:
1462 		tp = HP_VICTUS_THERMAL_PROFILE_QUIET;
1463 		break;
1464 	default:
1465 		return -EOPNOTSUPP;
1466 	}
1467 
1468 	err = omen_thermal_profile_set(tp);
1469 	if (err < 0)
1470 		return err;
1471 
1472 	return 0;
1473 }
1474 
platform_profile_victus_set(struct platform_profile_handler * pprof,enum platform_profile_option profile)1475 static int platform_profile_victus_set(struct platform_profile_handler *pprof,
1476 				       enum platform_profile_option profile)
1477 {
1478 	int err;
1479 
1480 	guard(mutex)(&active_platform_profile_lock);
1481 
1482 	err = platform_profile_victus_set_ec(profile);
1483 	if (err < 0)
1484 		return err;
1485 
1486 	active_platform_profile = profile;
1487 
1488 	return 0;
1489 }
1490 
omen_powersource_event(struct notifier_block * nb,unsigned long value,void * data)1491 static int omen_powersource_event(struct notifier_block *nb,
1492 				  unsigned long value,
1493 				  void *data)
1494 {
1495 	struct acpi_bus_event *event_entry = data;
1496 	enum platform_profile_option actual_profile;
1497 	int err;
1498 
1499 	if (strcmp(event_entry->device_class, ACPI_AC_CLASS) != 0)
1500 		return NOTIFY_DONE;
1501 
1502 	pr_debug("Received power source device event\n");
1503 
1504 	guard(mutex)(&active_platform_profile_lock);
1505 
1506 	/*
1507 	 * This handler can only be called on Omen and Victus models, so
1508 	 * there's no need to call is_victus_thermal_profile() here.
1509 	 */
1510 	if (is_omen_thermal_profile())
1511 		err = platform_profile_omen_get_ec(&actual_profile);
1512 	else
1513 		err = platform_profile_victus_get_ec(&actual_profile);
1514 
1515 	if (err < 0) {
1516 		/*
1517 		 * Although we failed to get the current platform profile, we
1518 		 * still want the other event consumers to process it.
1519 		 */
1520 		pr_warn("Failed to read current platform profile (%d)\n", err);
1521 		return NOTIFY_DONE;
1522 	}
1523 
1524 	/*
1525 	 * If we're back on AC and that the user-chosen power profile is
1526 	 * different from what the EC reports, we restore the user-chosen
1527 	 * one.
1528 	 */
1529 	if (power_supply_is_system_supplied() <= 0 ||
1530 	    active_platform_profile == actual_profile) {
1531 		pr_debug("Platform profile update skipped, conditions unmet\n");
1532 		return NOTIFY_DONE;
1533 	}
1534 
1535 	if (is_omen_thermal_profile())
1536 		err = platform_profile_omen_set_ec(active_platform_profile);
1537 	else
1538 		err = platform_profile_victus_set_ec(active_platform_profile);
1539 
1540 	if (err < 0) {
1541 		pr_warn("Failed to restore platform profile (%d)\n", err);
1542 		return NOTIFY_DONE;
1543 	}
1544 
1545 	return NOTIFY_OK;
1546 }
1547 
omen_register_powersource_event_handler(void)1548 static int omen_register_powersource_event_handler(void)
1549 {
1550 	int err;
1551 
1552 	platform_power_source_nb.notifier_call = omen_powersource_event;
1553 	err = register_acpi_notifier(&platform_power_source_nb);
1554 
1555 	if (err < 0) {
1556 		pr_warn("Failed to install ACPI power source notify handler\n");
1557 		return err;
1558 	}
1559 
1560 	return 0;
1561 }
1562 
omen_unregister_powersource_event_handler(void)1563 static inline void omen_unregister_powersource_event_handler(void)
1564 {
1565 	unregister_acpi_notifier(&platform_power_source_nb);
1566 }
1567 
thermal_profile_setup(void)1568 static int thermal_profile_setup(void)
1569 {
1570 	int err, tp;
1571 
1572 	if (is_omen_thermal_profile()) {
1573 		err = platform_profile_omen_get_ec(&active_platform_profile);
1574 		if (err < 0)
1575 			return err;
1576 
1577 		/*
1578 		 * call thermal profile write command to ensure that the
1579 		 * firmware correctly sets the OEM variables
1580 		 */
1581 		err = platform_profile_omen_set_ec(active_platform_profile);
1582 		if (err < 0)
1583 			return err;
1584 
1585 		platform_profile_handler.profile_get = platform_profile_omen_get;
1586 		platform_profile_handler.profile_set = platform_profile_omen_set;
1587 
1588 		set_bit(PLATFORM_PROFILE_COOL, platform_profile_handler.choices);
1589 	} else if (is_victus_thermal_profile()) {
1590 		err = platform_profile_victus_get_ec(&active_platform_profile);
1591 		if (err < 0)
1592 			return err;
1593 
1594 		/*
1595 		 * call thermal profile write command to ensure that the
1596 		 * firmware correctly sets the OEM variables
1597 		 */
1598 		err = platform_profile_victus_set_ec(active_platform_profile);
1599 		if (err < 0)
1600 			return err;
1601 
1602 		platform_profile_handler.profile_get = platform_profile_victus_get;
1603 		platform_profile_handler.profile_set = platform_profile_victus_set;
1604 
1605 		set_bit(PLATFORM_PROFILE_QUIET, platform_profile_handler.choices);
1606 	} else {
1607 		tp = thermal_profile_get();
1608 
1609 		if (tp < 0)
1610 			return tp;
1611 
1612 		/*
1613 		 * call thermal profile write command to ensure that the
1614 		 * firmware correctly sets the OEM variables for the DPTF
1615 		 */
1616 		err = thermal_profile_set(tp);
1617 		if (err)
1618 			return err;
1619 
1620 		platform_profile_handler.profile_get = hp_wmi_platform_profile_get;
1621 		platform_profile_handler.profile_set = hp_wmi_platform_profile_set;
1622 
1623 		set_bit(PLATFORM_PROFILE_QUIET, platform_profile_handler.choices);
1624 		set_bit(PLATFORM_PROFILE_COOL, platform_profile_handler.choices);
1625 	}
1626 
1627 	set_bit(PLATFORM_PROFILE_BALANCED, platform_profile_handler.choices);
1628 	set_bit(PLATFORM_PROFILE_PERFORMANCE, platform_profile_handler.choices);
1629 
1630 	err = platform_profile_register(&platform_profile_handler);
1631 	if (err)
1632 		return err;
1633 
1634 	platform_profile_support = true;
1635 
1636 	return 0;
1637 }
1638 
1639 static int hp_wmi_hwmon_init(void);
1640 
hp_wmi_bios_setup(struct platform_device * device)1641 static int __init hp_wmi_bios_setup(struct platform_device *device)
1642 {
1643 	int err;
1644 	/* clear detected rfkill devices */
1645 	wifi_rfkill = NULL;
1646 	bluetooth_rfkill = NULL;
1647 	wwan_rfkill = NULL;
1648 	rfkill2_count = 0;
1649 
1650 	/*
1651 	 * In pre-2009 BIOS, command 1Bh return 0x4 to indicate that
1652 	 * BIOS no longer controls the power for the wireless
1653 	 * devices. All features supported by this command will no
1654 	 * longer be supported.
1655 	 */
1656 	if (!hp_wmi_bios_2009_later()) {
1657 		if (hp_wmi_rfkill_setup(device))
1658 			hp_wmi_rfkill2_setup(device);
1659 	}
1660 
1661 	err = hp_wmi_hwmon_init();
1662 
1663 	if (err < 0)
1664 		return err;
1665 
1666 	thermal_profile_setup();
1667 
1668 	return 0;
1669 }
1670 
hp_wmi_bios_remove(struct platform_device * device)1671 static void __exit hp_wmi_bios_remove(struct platform_device *device)
1672 {
1673 	int i;
1674 
1675 	for (i = 0; i < rfkill2_count; i++) {
1676 		rfkill_unregister(rfkill2[i].rfkill);
1677 		rfkill_destroy(rfkill2[i].rfkill);
1678 	}
1679 
1680 	if (wifi_rfkill) {
1681 		rfkill_unregister(wifi_rfkill);
1682 		rfkill_destroy(wifi_rfkill);
1683 	}
1684 	if (bluetooth_rfkill) {
1685 		rfkill_unregister(bluetooth_rfkill);
1686 		rfkill_destroy(bluetooth_rfkill);
1687 	}
1688 	if (wwan_rfkill) {
1689 		rfkill_unregister(wwan_rfkill);
1690 		rfkill_destroy(wwan_rfkill);
1691 	}
1692 
1693 	if (platform_profile_support)
1694 		platform_profile_remove();
1695 }
1696 
hp_wmi_resume_handler(struct device * device)1697 static int hp_wmi_resume_handler(struct device *device)
1698 {
1699 	/*
1700 	 * Hardware state may have changed while suspended, so trigger
1701 	 * input events for the current state. As this is a switch,
1702 	 * the input layer will only actually pass it on if the state
1703 	 * changed.
1704 	 */
1705 	if (hp_wmi_input_dev) {
1706 		if (test_bit(SW_DOCK, hp_wmi_input_dev->swbit))
1707 			input_report_switch(hp_wmi_input_dev, SW_DOCK,
1708 					    hp_wmi_get_dock_state());
1709 		if (test_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit))
1710 			input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
1711 					    hp_wmi_get_tablet_mode());
1712 		input_sync(hp_wmi_input_dev);
1713 	}
1714 
1715 	if (rfkill2_count)
1716 		hp_wmi_rfkill2_refresh();
1717 
1718 	if (wifi_rfkill)
1719 		rfkill_set_states(wifi_rfkill,
1720 				  hp_wmi_get_sw_state(HPWMI_WIFI),
1721 				  hp_wmi_get_hw_state(HPWMI_WIFI));
1722 	if (bluetooth_rfkill)
1723 		rfkill_set_states(bluetooth_rfkill,
1724 				  hp_wmi_get_sw_state(HPWMI_BLUETOOTH),
1725 				  hp_wmi_get_hw_state(HPWMI_BLUETOOTH));
1726 	if (wwan_rfkill)
1727 		rfkill_set_states(wwan_rfkill,
1728 				  hp_wmi_get_sw_state(HPWMI_WWAN),
1729 				  hp_wmi_get_hw_state(HPWMI_WWAN));
1730 
1731 	return 0;
1732 }
1733 
1734 static const struct dev_pm_ops hp_wmi_pm_ops = {
1735 	.resume  = hp_wmi_resume_handler,
1736 	.restore  = hp_wmi_resume_handler,
1737 };
1738 
1739 /*
1740  * hp_wmi_bios_remove() lives in .exit.text. For drivers registered via
1741  * module_platform_driver_probe() this is ok because they cannot get unbound at
1742  * runtime. So mark the driver struct with __refdata to prevent modpost
1743  * triggering a section mismatch warning.
1744  */
1745 static struct platform_driver hp_wmi_driver __refdata = {
1746 	.driver = {
1747 		.name = "hp-wmi",
1748 		.pm = &hp_wmi_pm_ops,
1749 		.dev_groups = hp_wmi_groups,
1750 	},
1751 	.remove_new = __exit_p(hp_wmi_bios_remove),
1752 };
1753 
hp_wmi_hwmon_is_visible(const void * data,enum hwmon_sensor_types type,u32 attr,int channel)1754 static umode_t hp_wmi_hwmon_is_visible(const void *data,
1755 				       enum hwmon_sensor_types type,
1756 				       u32 attr, int channel)
1757 {
1758 	switch (type) {
1759 	case hwmon_pwm:
1760 		return 0644;
1761 	case hwmon_fan:
1762 		if (hp_wmi_get_fan_speed(channel) >= 0)
1763 			return 0444;
1764 		break;
1765 	default:
1766 		return 0;
1767 	}
1768 
1769 	return 0;
1770 }
1771 
hp_wmi_hwmon_read(struct device * dev,enum hwmon_sensor_types type,u32 attr,int channel,long * val)1772 static int hp_wmi_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
1773 			     u32 attr, int channel, long *val)
1774 {
1775 	int ret;
1776 
1777 	switch (type) {
1778 	case hwmon_fan:
1779 		ret = hp_wmi_get_fan_speed(channel);
1780 
1781 		if (ret < 0)
1782 			return ret;
1783 		*val = ret;
1784 		return 0;
1785 	case hwmon_pwm:
1786 		switch (hp_wmi_fan_speed_max_get()) {
1787 		case 0:
1788 			/* 0 is automatic fan, which is 2 for hwmon */
1789 			*val = 2;
1790 			return 0;
1791 		case 1:
1792 			/* 1 is max fan, which is 0
1793 			 * (no fan speed control) for hwmon
1794 			 */
1795 			*val = 0;
1796 			return 0;
1797 		default:
1798 			/* shouldn't happen */
1799 			return -ENODATA;
1800 		}
1801 	default:
1802 		return -EINVAL;
1803 	}
1804 }
1805 
hp_wmi_hwmon_write(struct device * dev,enum hwmon_sensor_types type,u32 attr,int channel,long val)1806 static int hp_wmi_hwmon_write(struct device *dev, enum hwmon_sensor_types type,
1807 			      u32 attr, int channel, long val)
1808 {
1809 	switch (type) {
1810 	case hwmon_pwm:
1811 		switch (val) {
1812 		case 0:
1813 			/* 0 is no fan speed control (max), which is 1 for us */
1814 			return hp_wmi_fan_speed_max_set(1);
1815 		case 2:
1816 			/* 2 is automatic speed control, which is 0 for us */
1817 			return hp_wmi_fan_speed_max_set(0);
1818 		default:
1819 			/* we don't support manual fan speed control */
1820 			return -EINVAL;
1821 		}
1822 	default:
1823 		return -EOPNOTSUPP;
1824 	}
1825 }
1826 
1827 static const struct hwmon_channel_info * const info[] = {
1828 	HWMON_CHANNEL_INFO(fan, HWMON_F_INPUT, HWMON_F_INPUT),
1829 	HWMON_CHANNEL_INFO(pwm, HWMON_PWM_ENABLE),
1830 	NULL
1831 };
1832 
1833 static const struct hwmon_ops ops = {
1834 	.is_visible = hp_wmi_hwmon_is_visible,
1835 	.read = hp_wmi_hwmon_read,
1836 	.write = hp_wmi_hwmon_write,
1837 };
1838 
1839 static const struct hwmon_chip_info chip_info = {
1840 	.ops = &ops,
1841 	.info = info,
1842 };
1843 
hp_wmi_hwmon_init(void)1844 static int hp_wmi_hwmon_init(void)
1845 {
1846 	struct device *dev = &hp_wmi_platform_dev->dev;
1847 	struct device *hwmon;
1848 
1849 	hwmon = devm_hwmon_device_register_with_info(dev, "hp", &hp_wmi_driver,
1850 						     &chip_info, NULL);
1851 
1852 	if (IS_ERR(hwmon)) {
1853 		dev_err(dev, "Could not register hp hwmon device\n");
1854 		return PTR_ERR(hwmon);
1855 	}
1856 
1857 	return 0;
1858 }
1859 
hp_wmi_init(void)1860 static int __init hp_wmi_init(void)
1861 {
1862 	int event_capable = wmi_has_guid(HPWMI_EVENT_GUID);
1863 	int bios_capable = wmi_has_guid(HPWMI_BIOS_GUID);
1864 	int err, tmp = 0;
1865 
1866 	if (!bios_capable && !event_capable)
1867 		return -ENODEV;
1868 
1869 	if (hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, HPWMI_READ, &tmp,
1870 				 sizeof(tmp), sizeof(tmp)) == HPWMI_RET_INVALID_PARAMETERS)
1871 		zero_insize_support = true;
1872 
1873 	if (event_capable) {
1874 		err = hp_wmi_input_setup();
1875 		if (err)
1876 			return err;
1877 	}
1878 
1879 	if (bios_capable) {
1880 		hp_wmi_platform_dev =
1881 			platform_device_register_simple("hp-wmi", PLATFORM_DEVID_NONE, NULL, 0);
1882 		if (IS_ERR(hp_wmi_platform_dev)) {
1883 			err = PTR_ERR(hp_wmi_platform_dev);
1884 			goto err_destroy_input;
1885 		}
1886 
1887 		err = platform_driver_probe(&hp_wmi_driver, hp_wmi_bios_setup);
1888 		if (err)
1889 			goto err_unregister_device;
1890 	}
1891 
1892 	if (is_omen_thermal_profile() || is_victus_thermal_profile()) {
1893 		err = omen_register_powersource_event_handler();
1894 		if (err)
1895 			goto err_unregister_device;
1896 	}
1897 
1898 	return 0;
1899 
1900 err_unregister_device:
1901 	platform_device_unregister(hp_wmi_platform_dev);
1902 err_destroy_input:
1903 	if (event_capable)
1904 		hp_wmi_input_destroy();
1905 
1906 	return err;
1907 }
1908 module_init(hp_wmi_init);
1909 
hp_wmi_exit(void)1910 static void __exit hp_wmi_exit(void)
1911 {
1912 	if (is_omen_thermal_profile() || is_victus_thermal_profile())
1913 		omen_unregister_powersource_event_handler();
1914 
1915 	if (wmi_has_guid(HPWMI_EVENT_GUID))
1916 		hp_wmi_input_destroy();
1917 
1918 	if (camera_shutter_input_dev)
1919 		input_unregister_device(camera_shutter_input_dev);
1920 
1921 	if (hp_wmi_platform_dev) {
1922 		platform_device_unregister(hp_wmi_platform_dev);
1923 		platform_driver_unregister(&hp_wmi_driver);
1924 	}
1925 }
1926 module_exit(hp_wmi_exit);
1927