drivers/gpu/drm/nouveau/nouveau_led.h

   1 /*
   2  * Copyright 2015 Martin Peres
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Martin Peres <martin.peres@free.fr>
  23  */
  24
  25 #ifndef __NOUVEAU_LED_H__
  26 #define __NOUVEAU_LED_H__
  27
  28 #include "nouveau_drv.h"
  29
  30 struct led_classdev;
  31
  32 struct nouveau_led {
  33         struct drm_device *dev;
  34
  35         struct led_classdev led;
  36 };
  37
  38 static inline struct nouveau_led *
  39 nouveau_led(struct drm_device *dev)
  40 {
  41         return nouveau_drm(dev)->led;
  42 }
  43
  44 /* nouveau_led.c */
  45 #if IS_REACHABLE(CONFIG_LEDS_CLASS)
  46 int  nouveau_led_init(struct drm_device *dev);
  47 void nouveau_led_suspend(struct drm_device *dev);
  48 void nouveau_led_resume(struct drm_device *dev);
  49 void nouveau_led_fini(struct drm_device *dev);
  50 #else
  51 static inline int  nouveau_led_init(struct drm_device *dev) { return 0; };
  52 static inline void nouveau_led_suspend(struct drm_device *dev) { };
  53 static inline void nouveau_led_resume(struct drm_device *dev) { };
  54 static inline void nouveau_led_fini(struct drm_device *dev) { };
  55 #endif
  56
  57 #endif