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d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
c72a1d60 RP |
2 | /* |
3 | * Driver model for leds and led triggers | |
4 | * | |
5 | * Copyright (C) 2005 John Lenz <lenz@cs.wisc.edu> | |
6 | * Copyright (C) 2005 Richard Purdie <rpurdie@openedhand.com> | |
c72a1d60 RP |
7 | */ |
8 | #ifndef __LINUX_LEDS_H_INCLUDED | |
9 | #define __LINUX_LEDS_H_INCLUDED | |
10 | ||
bb4e9af0 | 11 | #include <dt-bindings/leds/common.h> |
20f56758 | 12 | #include <linux/device.h> |
0cb8eb30 | 13 | #include <linux/kernfs.h> |
af410fc1 | 14 | #include <linux/list.h> |
acd899e4 | 15 | #include <linux/mutex.h> |
dc47206e | 16 | #include <linux/rwsem.h> |
04713306 | 17 | #include <linux/spinlock.h> |
9067359f | 18 | #include <linux/timer.h> |
d23a22a7 | 19 | #include <linux/workqueue.h> |
af410fc1 | 20 | |
c72a1d60 | 21 | struct device; |
5fd752b6 | 22 | struct led_pattern; |
c72a1d60 RP |
23 | /* |
24 | * LED Core | |
25 | */ | |
26 | ||
27 | enum led_brightness { | |
fb5035db | 28 | LED_OFF = 0, |
4e552c8c | 29 | LED_ON = 1, |
fb5035db BD |
30 | LED_HALF = 127, |
31 | LED_FULL = 255, | |
c72a1d60 RP |
32 | }; |
33 | ||
b2b998c0 JA |
34 | struct led_init_data { |
35 | /* device fwnode handle */ | |
36 | struct fwnode_handle *fwnode; | |
bb4e9af0 JA |
37 | /* |
38 | * default <color:function> tuple, for backward compatibility | |
39 | * with in-driver hard-coded LED names used as a fallback when | |
40 | * DT "label" property is absent; it should be set to NULL | |
41 | * in new LED class drivers. | |
42 | */ | |
43 | const char *default_label; | |
44 | /* | |
45 | * string to be used for devicename section of LED class device | |
46 | * either for label based LED name composition path or for fwnode | |
47 | * based when devname_mandatory is true | |
48 | */ | |
49 | const char *devicename; | |
50 | /* | |
51 | * indicates if LED name should always comprise devicename section; | |
52 | * only LEDs exposed by drivers of hot-pluggable devices should | |
53 | * set it to true | |
54 | */ | |
55 | bool devname_mandatory; | |
b2b998c0 JA |
56 | }; |
57 | ||
c72a1d60 | 58 | struct led_classdev { |
fb5035db | 59 | const char *name; |
d8082827 JA |
60 | enum led_brightness brightness; |
61 | enum led_brightness max_brightness; | |
fb5035db | 62 | int flags; |
c72a1d60 | 63 | |
859cb7f2 | 64 | /* Lower 16 bits reflect status */ |
55edd1da DL |
65 | #define LED_SUSPENDED BIT(0) |
66 | #define LED_UNREGISTERING BIT(1) | |
859cb7f2 | 67 | /* Upper 16 bits reflect control information */ |
55edd1da DL |
68 | #define LED_CORE_SUSPENDRESUME BIT(16) |
69 | #define LED_SYSFS_DISABLE BIT(17) | |
70 | #define LED_DEV_CAP_FLASH BIT(18) | |
71 | #define LED_HW_PLUGGABLE BIT(19) | |
72 | #define LED_PANIC_INDICATOR BIT(20) | |
73 | #define LED_BRIGHT_HW_CHANGED BIT(21) | |
74 | #define LED_RETAIN_AT_SHUTDOWN BIT(22) | |
02d31765 | 75 | #define LED_INIT_DEFAULT_TRIGGER BIT(23) |
a9c6ce57 HG |
76 | |
77 | /* set_brightness_work / blink_timer flags, atomic, private. */ | |
78 | unsigned long work_flags; | |
79 | ||
80 | #define LED_BLINK_SW 0 | |
81 | #define LED_BLINK_ONESHOT 1 | |
82 | #define LED_BLINK_ONESHOT_STOP 2 | |
83 | #define LED_BLINK_INVERT 3 | |
84 | #define LED_BLINK_BRIGHTNESS_CHANGE 4 | |
85 | #define LED_BLINK_DISABLE 5 | |
c72a1d60 | 86 | |
70b2563b HK |
87 | /* Set LED brightness level |
88 | * Must not sleep. Use brightness_set_blocking for drivers | |
89 | * that can sleep while setting brightness. | |
90 | */ | |
fb5035db BD |
91 | void (*brightness_set)(struct led_classdev *led_cdev, |
92 | enum led_brightness brightness); | |
4d71a4a1 JA |
93 | /* |
94 | * Set LED brightness level immediately - it can block the caller for | |
95 | * the time required for accessing a LED device register. | |
96 | */ | |
437a4240 JA |
97 | int (*brightness_set_blocking)(struct led_classdev *led_cdev, |
98 | enum led_brightness brightness); | |
29d76dfa HMH |
99 | /* Get LED brightness level */ |
100 | enum led_brightness (*brightness_get)(struct led_classdev *led_cdev); | |
fb5035db | 101 | |
5ada28bf JB |
102 | /* |
103 | * Activate hardware accelerated blink, delays are in milliseconds | |
104 | * and if both are zero then a sensible default should be chosen. | |
105 | * The call should adjust the timings in that case and if it can't | |
106 | * match the values specified exactly. | |
7cfe749f TM |
107 | * Deactivate blinking again when the brightness is set to LED_OFF |
108 | * via the brightness_set() callback. | |
5ada28bf | 109 | */ |
4c79141d MN |
110 | int (*blink_set)(struct led_classdev *led_cdev, |
111 | unsigned long *delay_on, | |
112 | unsigned long *delay_off); | |
113 | ||
5fd752b6 BW |
114 | int (*pattern_set)(struct led_classdev *led_cdev, |
115 | struct led_pattern *pattern, u32 len, int repeat); | |
116 | int (*pattern_clear)(struct led_classdev *led_cdev); | |
117 | ||
f8a7c6fe | 118 | struct device *dev; |
d0d480cc JH |
119 | const struct attribute_group **groups; |
120 | ||
fb5035db | 121 | struct list_head node; /* LED Device list */ |
781a54e7 | 122 | const char *default_trigger; /* Trigger to use */ |
c72a1d60 | 123 | |
5ada28bf | 124 | unsigned long blink_delay_on, blink_delay_off; |
9067359f | 125 | struct timer_list blink_timer; |
5ada28bf | 126 | int blink_brightness; |
eb1610b4 | 127 | int new_blink_brightness; |
7aea8389 | 128 | void (*flash_resume)(struct led_classdev *led_cdev); |
5ada28bf | 129 | |
d23a22a7 FB |
130 | struct work_struct set_brightness_work; |
131 | int delayed_set_value; | |
132 | ||
c3bc9956 | 133 | #ifdef CONFIG_LEDS_TRIGGERS |
c3bc9956 | 134 | /* Protects the trigger data below */ |
dc47206e | 135 | struct rw_semaphore trigger_lock; |
c3bc9956 | 136 | |
fb5035db BD |
137 | struct led_trigger *trigger; |
138 | struct list_head trig_list; | |
139 | void *trigger_data; | |
b0096182 SK |
140 | /* true if activated - deactivate routine uses it to do cleanup */ |
141 | bool activated; | |
c3bc9956 | 142 | #endif |
acd899e4 | 143 | |
0cb8eb30 HG |
144 | #ifdef CONFIG_LEDS_BRIGHTNESS_HW_CHANGED |
145 | int brightness_hw_changed; | |
146 | struct kernfs_node *brightness_hw_changed_kn; | |
147 | #endif | |
148 | ||
acd899e4 JA |
149 | /* Ensures consistent access to the LED Flash Class device */ |
150 | struct mutex led_access; | |
c72a1d60 RP |
151 | }; |
152 | ||
b2b998c0 JA |
153 | /** |
154 | * led_classdev_register_ext - register a new object of LED class with | |
155 | * init data | |
156 | * @parent: LED controller device this LED is driven by | |
157 | * @led_cdev: the led_classdev structure for this device | |
158 | * @init_data: the LED class device initialization data | |
159 | * | |
7c322056 JA |
160 | * Register a new object of LED class, with name derived from init_data. |
161 | * | |
b2b998c0 JA |
162 | * Returns: 0 on success or negative error value on failure |
163 | */ | |
ec28a8cf | 164 | int led_classdev_register_ext(struct device *parent, |
b2b998c0 JA |
165 | struct led_classdev *led_cdev, |
166 | struct led_init_data *init_data); | |
7c322056 JA |
167 | |
168 | /** | |
169 | * led_classdev_register - register a new object of LED class | |
170 | * @parent: LED controller device this LED is driven by | |
171 | * @led_cdev: the led_classdev structure for this device | |
172 | * | |
173 | * Register a new object of LED class, with name derived from the name property | |
174 | * of passed led_cdev argument. | |
175 | * | |
176 | * Returns: 0 on success or negative error value on failure | |
177 | */ | |
178 | static inline int led_classdev_register(struct device *parent, | |
179 | struct led_classdev *led_cdev) | |
180 | { | |
181 | return led_classdev_register_ext(parent, led_cdev, NULL); | |
182 | } | |
183 | ||
ec28a8cf | 184 | int devm_led_classdev_register_ext(struct device *parent, |
b2b998c0 JA |
185 | struct led_classdev *led_cdev, |
186 | struct led_init_data *init_data); | |
7c322056 JA |
187 | |
188 | static inline int devm_led_classdev_register(struct device *parent, | |
189 | struct led_classdev *led_cdev) | |
190 | { | |
191 | return devm_led_classdev_register_ext(parent, led_cdev, NULL); | |
192 | } | |
ec28a8cf DM |
193 | void led_classdev_unregister(struct led_classdev *led_cdev); |
194 | void devm_led_classdev_unregister(struct device *parent, | |
195 | struct led_classdev *led_cdev); | |
196 | void led_classdev_suspend(struct led_classdev *led_cdev); | |
197 | void led_classdev_resume(struct led_classdev *led_cdev); | |
c72a1d60 | 198 | |
5ada28bf JB |
199 | /** |
200 | * led_blink_set - set blinking with software fallback | |
201 | * @led_cdev: the LED to start blinking | |
202 | * @delay_on: the time it should be on (in ms) | |
203 | * @delay_off: the time it should ble off (in ms) | |
204 | * | |
205 | * This function makes the LED blink, attempting to use the | |
206 | * hardware acceleration if possible, but falling back to | |
207 | * software blinking if there is no hardware blinking or if | |
208 | * the LED refuses the passed values. | |
209 | * | |
210 | * Note that if software blinking is active, simply calling | |
211 | * led_cdev->brightness_set() will not stop the blinking, | |
212 | * use led_classdev_brightness_set() instead. | |
213 | */ | |
ec28a8cf DM |
214 | void led_blink_set(struct led_classdev *led_cdev, unsigned long *delay_on, |
215 | unsigned long *delay_off); | |
5bb629c5 FB |
216 | /** |
217 | * led_blink_set_oneshot - do a oneshot software blink | |
218 | * @led_cdev: the LED to start blinking | |
219 | * @delay_on: the time it should be on (in ms) | |
220 | * @delay_off: the time it should ble off (in ms) | |
221 | * @invert: blink off, then on, leaving the led on | |
222 | * | |
223 | * This function makes the LED blink one time for delay_on + | |
224 | * delay_off time, ignoring the request if another one-shot | |
225 | * blink is already in progress. | |
226 | * | |
227 | * If invert is set, led blinks for delay_off first, then for | |
228 | * delay_on and leave the led on after the on-off cycle. | |
229 | */ | |
ec28a8cf DM |
230 | void led_blink_set_oneshot(struct led_classdev *led_cdev, |
231 | unsigned long *delay_on, unsigned long *delay_off, | |
232 | int invert); | |
5ada28bf | 233 | /** |
19cd67e2 | 234 | * led_set_brightness - set LED brightness |
5ada28bf JB |
235 | * @led_cdev: the LED to set |
236 | * @brightness: the brightness to set it to | |
237 | * | |
238 | * Set an LED's brightness, and, if necessary, cancel the | |
239 | * software blink timer that implements blinking when the | |
1afcadfc | 240 | * hardware doesn't. This function is guaranteed not to sleep. |
5ada28bf | 241 | */ |
ec28a8cf DM |
242 | void led_set_brightness(struct led_classdev *led_cdev, |
243 | enum led_brightness brightness); | |
13ae79bb JA |
244 | |
245 | /** | |
246 | * led_set_brightness_sync - set LED brightness synchronously | |
247 | * @led_cdev: the LED to set | |
9cc93be7 | 248 | * @value: the brightness to set it to |
13ae79bb JA |
249 | * |
250 | * Set an LED's brightness immediately. This function will block | |
251 | * the caller for the time required for accessing device registers, | |
252 | * and it can sleep. | |
253 | * | |
254 | * Returns: 0 on success or negative error value on failure | |
255 | */ | |
ec28a8cf DM |
256 | int led_set_brightness_sync(struct led_classdev *led_cdev, |
257 | enum led_brightness value); | |
13ae79bb | 258 | |
3ef7de53 JA |
259 | /** |
260 | * led_update_brightness - update LED brightness | |
261 | * @led_cdev: the LED to query | |
262 | * | |
263 | * Get an LED's current brightness and update led_cdev->brightness | |
264 | * member with the obtained value. | |
265 | * | |
266 | * Returns: 0 on success or negative error value on failure | |
267 | */ | |
ec28a8cf | 268 | int led_update_brightness(struct led_classdev *led_cdev); |
5ada28bf | 269 | |
8e1f4561 KK |
270 | /** |
271 | * led_get_default_pattern - return default pattern | |
272 | * | |
273 | * @led_cdev: the LED to get default pattern for | |
274 | * @size: pointer for storing the number of elements in returned array, | |
275 | * modified only if return != NULL | |
276 | * | |
277 | * Return: Allocated array of integers with default pattern from device tree | |
278 | * or NULL. Caller is responsible for kfree(). | |
279 | */ | |
ec28a8cf | 280 | u32 *led_get_default_pattern(struct led_classdev *led_cdev, unsigned int *size); |
8e1f4561 | 281 | |
acd899e4 JA |
282 | /** |
283 | * led_sysfs_disable - disable LED sysfs interface | |
284 | * @led_cdev: the LED to set | |
285 | * | |
286 | * Disable the led_cdev's sysfs interface. | |
287 | */ | |
ec28a8cf | 288 | void led_sysfs_disable(struct led_classdev *led_cdev); |
acd899e4 JA |
289 | |
290 | /** | |
291 | * led_sysfs_enable - enable LED sysfs interface | |
292 | * @led_cdev: the LED to set | |
293 | * | |
294 | * Enable the led_cdev's sysfs interface. | |
295 | */ | |
ec28a8cf | 296 | void led_sysfs_enable(struct led_classdev *led_cdev); |
acd899e4 | 297 | |
bb4e9af0 JA |
298 | /** |
299 | * led_compose_name - compose LED class device name | |
300 | * @dev: LED controller device object | |
9cc93be7 | 301 | * @init_data: the LED class device initialization data |
bb4e9af0 JA |
302 | * @led_classdev_name: composed LED class device name |
303 | * | |
304 | * Create LED class device name basing on the provided init_data argument. | |
305 | * The name can have <devicename:color:function> or <color:function>. | |
306 | * form, depending on the init_data configuration. | |
307 | * | |
308 | * Returns: 0 on success or negative error value on failure | |
309 | */ | |
ec28a8cf DM |
310 | int led_compose_name(struct device *dev, struct led_init_data *init_data, |
311 | char *led_classdev_name); | |
bb4e9af0 | 312 | |
acd899e4 JA |
313 | /** |
314 | * led_sysfs_is_disabled - check if LED sysfs interface is disabled | |
315 | * @led_cdev: the LED to query | |
316 | * | |
317 | * Returns: true if the led_cdev's sysfs interface is disabled. | |
318 | */ | |
319 | static inline bool led_sysfs_is_disabled(struct led_classdev *led_cdev) | |
320 | { | |
321 | return led_cdev->flags & LED_SYSFS_DISABLE; | |
322 | } | |
323 | ||
c3bc9956 RP |
324 | /* |
325 | * LED Triggers | |
326 | */ | |
39f7e08a KM |
327 | /* Registration functions for simple triggers */ |
328 | #define DEFINE_LED_TRIGGER(x) static struct led_trigger *x; | |
329 | #define DEFINE_LED_TRIGGER_GLOBAL(x) struct led_trigger *x; | |
330 | ||
c3bc9956 RP |
331 | #ifdef CONFIG_LEDS_TRIGGERS |
332 | ||
333 | #define TRIG_NAME_MAX 50 | |
334 | ||
335 | struct led_trigger { | |
336 | /* Trigger Properties */ | |
fb5035db | 337 | const char *name; |
2282e125 | 338 | int (*activate)(struct led_classdev *led_cdev); |
fb5035db | 339 | void (*deactivate)(struct led_classdev *led_cdev); |
c3bc9956 RP |
340 | |
341 | /* LEDs under control by this trigger (for simple triggers) */ | |
fb5035db BD |
342 | rwlock_t leddev_list_lock; |
343 | struct list_head led_cdevs; | |
c3bc9956 RP |
344 | |
345 | /* Link to next registered trigger */ | |
fb5035db | 346 | struct list_head next_trig; |
a7e7a315 UKK |
347 | |
348 | const struct attribute_group **groups; | |
c3bc9956 RP |
349 | }; |
350 | ||
a7e7a315 UKK |
351 | /* |
352 | * Currently the attributes in struct led_trigger::groups are added directly to | |
353 | * the LED device. As this might change in the future, the following | |
354 | * macros abstract getting the LED device and its trigger_data from the dev | |
355 | * parameter passed to the attribute accessor functions. | |
356 | */ | |
357 | #define led_trigger_get_led(dev) ((struct led_classdev *)dev_get_drvdata((dev))) | |
358 | #define led_trigger_get_drvdata(dev) (led_get_trigger_data(led_trigger_get_led(dev))) | |
359 | ||
c3bc9956 | 360 | /* Registration functions for complex triggers */ |
ec28a8cf DM |
361 | int led_trigger_register(struct led_trigger *trigger); |
362 | void led_trigger_unregister(struct led_trigger *trigger); | |
363 | int devm_led_trigger_register(struct device *dev, | |
9534cc31 | 364 | struct led_trigger *trigger); |
c3bc9956 | 365 | |
ec28a8cf | 366 | void led_trigger_register_simple(const char *name, |
c3bc9956 | 367 | struct led_trigger **trigger); |
ec28a8cf DM |
368 | void led_trigger_unregister_simple(struct led_trigger *trigger); |
369 | void led_trigger_event(struct led_trigger *trigger, enum led_brightness event); | |
370 | void led_trigger_blink(struct led_trigger *trigger, unsigned long *delay_on, | |
371 | unsigned long *delay_off); | |
372 | void led_trigger_blink_oneshot(struct led_trigger *trigger, | |
373 | unsigned long *delay_on, | |
374 | unsigned long *delay_off, | |
375 | int invert); | |
376 | void led_trigger_set_default(struct led_classdev *led_cdev); | |
377 | int led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trigger); | |
378 | void led_trigger_remove(struct led_classdev *led_cdev); | |
20f56758 | 379 | |
9acc560d UKK |
380 | static inline void led_set_trigger_data(struct led_classdev *led_cdev, |
381 | void *trigger_data) | |
382 | { | |
383 | led_cdev->trigger_data = trigger_data; | |
384 | } | |
385 | ||
20f56758 JA |
386 | static inline void *led_get_trigger_data(struct led_classdev *led_cdev) |
387 | { | |
388 | return led_cdev->trigger_data; | |
389 | } | |
390 | ||
057407c7 JH |
391 | /** |
392 | * led_trigger_rename_static - rename a trigger | |
393 | * @name: the new trigger name | |
394 | * @trig: the LED trigger to rename | |
395 | * | |
396 | * Change a LED trigger name by copying the string passed in | |
397 | * name into current trigger name, which MUST be large | |
398 | * enough for the new string. | |
399 | * | |
400 | * Note that name must NOT point to the same string used | |
401 | * during LED registration, as that could lead to races. | |
402 | * | |
403 | * This is meant to be used on triggers with statically | |
404 | * allocated name. | |
405 | */ | |
ec28a8cf | 406 | void led_trigger_rename_static(const char *name, struct led_trigger *trig); |
c3bc9956 | 407 | |
a0b75076 UKK |
408 | #define module_led_trigger(__led_trigger) \ |
409 | module_driver(__led_trigger, led_trigger_register, \ | |
410 | led_trigger_unregister) | |
411 | ||
c3bc9956 RP |
412 | #else |
413 | ||
39f7e08a KM |
414 | /* Trigger has no members */ |
415 | struct led_trigger {}; | |
c3bc9956 | 416 | |
39f7e08a KM |
417 | /* Trigger inline empty functions */ |
418 | static inline void led_trigger_register_simple(const char *name, | |
419 | struct led_trigger **trigger) {} | |
420 | static inline void led_trigger_unregister_simple(struct led_trigger *trigger) {} | |
421 | static inline void led_trigger_event(struct led_trigger *trigger, | |
422 | enum led_brightness event) {} | |
8890624a MG |
423 | static inline void led_trigger_blink(struct led_trigger *trigger, |
424 | unsigned long *delay_on, | |
425 | unsigned long *delay_off) {} | |
426 | static inline void led_trigger_blink_oneshot(struct led_trigger *trigger, | |
427 | unsigned long *delay_on, | |
428 | unsigned long *delay_off, | |
429 | int invert) {} | |
20f56758 | 430 | static inline void led_trigger_set_default(struct led_classdev *led_cdev) {} |
2282e125 UKK |
431 | static inline int led_trigger_set(struct led_classdev *led_cdev, |
432 | struct led_trigger *trigger) | |
433 | { | |
434 | return 0; | |
435 | } | |
436 | ||
20f56758 | 437 | static inline void led_trigger_remove(struct led_classdev *led_cdev) {} |
9acc560d | 438 | static inline void led_set_trigger_data(struct led_classdev *led_cdev) {} |
20f56758 JA |
439 | static inline void *led_get_trigger_data(struct led_classdev *led_cdev) |
440 | { | |
441 | return NULL; | |
442 | } | |
443 | ||
39f7e08a | 444 | #endif /* CONFIG_LEDS_TRIGGERS */ |
2bfb646c RP |
445 | |
446 | /* Trigger specific functions */ | |
eb25cb99 | 447 | #ifdef CONFIG_LEDS_TRIGGER_DISK |
ec28a8cf | 448 | void ledtrig_disk_activity(bool write); |
2bfb646c | 449 | #else |
d1ed7c55 | 450 | static inline void ledtrig_disk_activity(bool write) {} |
2bfb646c RP |
451 | #endif |
452 | ||
4b721174 | 453 | #ifdef CONFIG_LEDS_TRIGGER_MTD |
ec28a8cf | 454 | void ledtrig_mtd_activity(void); |
4b721174 EG |
455 | #else |
456 | static inline void ledtrig_mtd_activity(void) {} | |
457 | #endif | |
458 | ||
48a1d032 | 459 | #if defined(CONFIG_LEDS_TRIGGER_CAMERA) || defined(CONFIG_LEDS_TRIGGER_CAMERA_MODULE) |
ec28a8cf DM |
460 | void ledtrig_flash_ctrl(bool on); |
461 | void ledtrig_torch_ctrl(bool on); | |
48a1d032 KM |
462 | #else |
463 | static inline void ledtrig_flash_ctrl(bool on) {} | |
464 | static inline void ledtrig_torch_ctrl(bool on) {} | |
465 | #endif | |
466 | ||
f46e9203 NC |
467 | /* |
468 | * Generic LED platform data for describing LED names and default triggers. | |
469 | */ | |
470 | struct led_info { | |
471 | const char *name; | |
326bb8a5 | 472 | const char *default_trigger; |
f46e9203 NC |
473 | int flags; |
474 | }; | |
475 | ||
476 | struct led_platform_data { | |
477 | int num_leds; | |
478 | struct led_info *leds; | |
479 | }; | |
480 | ||
bb4e9af0 JA |
481 | struct led_properties { |
482 | u32 color; | |
483 | bool color_present; | |
484 | const char *function; | |
485 | u32 func_enum; | |
486 | bool func_enum_present; | |
487 | const char *label; | |
488 | }; | |
489 | ||
68620e59 HK |
490 | struct gpio_desc; |
491 | typedef int (*gpio_blink_set_t)(struct gpio_desc *desc, int state, | |
492 | unsigned long *delay_on, | |
493 | unsigned long *delay_off); | |
494 | ||
22e03f3b RA |
495 | /* For the leds-gpio driver */ |
496 | struct gpio_led { | |
497 | const char *name; | |
326bb8a5 | 498 | const char *default_trigger; |
22e03f3b | 499 | unsigned gpio; |
ed88bae6 TP |
500 | unsigned active_low : 1; |
501 | unsigned retain_state_suspended : 1; | |
80d6737b | 502 | unsigned panic_indicator : 1; |
ed88bae6 | 503 | unsigned default_state : 2; |
f5808ac1 | 504 | unsigned retain_state_shutdown : 1; |
ed88bae6 | 505 | /* default_state should be one of LEDS_GPIO_DEFSTATE_(ON|OFF|KEEP) */ |
5c51277a | 506 | struct gpio_desc *gpiod; |
22e03f3b | 507 | }; |
2146325d BH |
508 | #define LEDS_GPIO_DEFSTATE_OFF 0 |
509 | #define LEDS_GPIO_DEFSTATE_ON 1 | |
510 | #define LEDS_GPIO_DEFSTATE_KEEP 2 | |
22e03f3b RA |
511 | |
512 | struct gpio_led_platform_data { | |
513 | int num_leds; | |
9517f925 | 514 | const struct gpio_led *leds; |
2146325d BH |
515 | |
516 | #define GPIO_LED_NO_BLINK_LOW 0 /* No blink GPIO state low */ | |
517 | #define GPIO_LED_NO_BLINK_HIGH 1 /* No blink GPIO state high */ | |
9517f925 | 518 | #define GPIO_LED_BLINK 2 /* Please, blink */ |
68620e59 | 519 | gpio_blink_set_t gpio_blink_set; |
22e03f3b RA |
520 | }; |
521 | ||
fca23e47 | 522 | #ifdef CONFIG_NEW_LEDS |
4440673a UKK |
523 | struct platform_device *gpio_led_register_device( |
524 | int id, const struct gpio_led_platform_data *pdata); | |
fca23e47 AD |
525 | #else |
526 | static inline struct platform_device *gpio_led_register_device( | |
527 | int id, const struct gpio_led_platform_data *pdata) | |
528 | { | |
529 | return 0; | |
530 | } | |
531 | #endif | |
22e03f3b | 532 | |
8f88731d BW |
533 | enum cpu_led_event { |
534 | CPU_LED_IDLE_START, /* CPU enters idle */ | |
535 | CPU_LED_IDLE_END, /* CPU idle ends */ | |
536 | CPU_LED_START, /* Machine starts, especially resume */ | |
537 | CPU_LED_STOP, /* Machine stops, especially suspend */ | |
538 | CPU_LED_HALTED, /* Machine shutdown */ | |
539 | }; | |
540 | #ifdef CONFIG_LEDS_TRIGGER_CPU | |
ec28a8cf | 541 | void ledtrig_cpu(enum cpu_led_event evt); |
8f88731d BW |
542 | #else |
543 | static inline void ledtrig_cpu(enum cpu_led_event evt) | |
544 | { | |
545 | return; | |
546 | } | |
547 | #endif | |
548 | ||
0cb8eb30 | 549 | #ifdef CONFIG_LEDS_BRIGHTNESS_HW_CHANGED |
ec28a8cf | 550 | void led_classdev_notify_brightness_hw_changed( |
0cb8eb30 HG |
551 | struct led_classdev *led_cdev, enum led_brightness brightness); |
552 | #else | |
553 | static inline void led_classdev_notify_brightness_hw_changed( | |
554 | struct led_classdev *led_cdev, enum led_brightness brightness) { } | |
555 | #endif | |
556 | ||
5fd752b6 BW |
557 | /** |
558 | * struct led_pattern - pattern interval settings | |
559 | * @delta_t: pattern interval delay, in milliseconds | |
560 | * @brightness: pattern interval brightness | |
561 | */ | |
562 | struct led_pattern { | |
563 | u32 delta_t; | |
564 | int brightness; | |
565 | }; | |
566 | ||
faa2541f TI |
567 | enum led_audio { |
568 | LED_AUDIO_MUTE, /* master mute LED */ | |
569 | LED_AUDIO_MICMUTE, /* mic mute LED */ | |
570 | NUM_AUDIO_LEDS | |
571 | }; | |
572 | ||
573 | #if IS_ENABLED(CONFIG_LEDS_TRIGGER_AUDIO) | |
574 | enum led_brightness ledtrig_audio_get(enum led_audio type); | |
575 | void ledtrig_audio_set(enum led_audio type, enum led_brightness state); | |
576 | #else | |
577 | static inline enum led_brightness ledtrig_audio_get(enum led_audio type) | |
578 | { | |
579 | return LED_OFF; | |
580 | } | |
581 | static inline void ledtrig_audio_set(enum led_audio type, | |
582 | enum led_brightness state) | |
583 | { | |
584 | } | |
585 | #endif | |
586 | ||
c72a1d60 | 587 | #endif /* __LINUX_LEDS_H_INCLUDED */ |