include/sound/hda_component.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 // HD-Audio helpers to sync with DRM driver
   3
   4 #ifndef __SOUND_HDA_COMPONENT_H
   5 #define __SOUND_HDA_COMPONENT_H
   6
   7 #include <drm/drm_audio_component.h>
   8
   9 #ifdef CONFIG_SND_HDA_COMPONENT
  10 int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable);
  11 int snd_hdac_display_power(struct hdac_bus *bus, bool enable);
  12 int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
  13                              int dev_id, int rate);
  14 int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id,
  15                            bool *audio_enabled, char *buffer, int max_bytes);
  16 int snd_hdac_acomp_init(struct hdac_bus *bus,
  17                         const struct drm_audio_component_audio_ops *aops,
  18                         int (*match_master)(struct device *, void *),
  19                         size_t extra_size);
  20 int snd_hdac_acomp_exit(struct hdac_bus *bus);
  21 int snd_hdac_acomp_register_notifier(struct hdac_bus *bus,
  22                                     const struct drm_audio_component_audio_ops *ops);
  23 #else
  24 static inline int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable)
  25 {
  26         return 0;
  27 }
  28 static inline int snd_hdac_display_power(struct hdac_bus *bus, bool enable)
  29 {
  30         return 0;
  31 }
  32 static inline int snd_hdac_sync_audio_rate(struct hdac_device *codec,
  33                                            hda_nid_t nid, int dev_id, int rate)
  34 {
  35         return 0;
  36 }
  37 static inline int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid,
  38                                          int dev_id, bool *audio_enabled,
  39                                          char *buffer, int max_bytes)
  40 {
  41         return -ENODEV;
  42 }
  43 static inline int snd_hdac_acomp_init(struct hdac_bus *bus,
  44                                       const struct drm_audio_component_audio_ops *aops,
  45                                       int (*match_master)(struct device *, void *),
  46                                       size_t extra_size)
  47 {
  48         return -ENODEV;
  49 }
  50 static inline int snd_hdac_acomp_exit(struct hdac_bus *bus)
  51 {
  52         return 0;
  53 }
  54 static inline int snd_hdac_acomp_register_notifier(struct hdac_bus *bus,
  55                                                   const struct drm_audio_component_audio_ops *ops)
  56 {
  57         return -ENODEV;
  58 }
  59 #endif
  60
  61 #endif /* __SOUND_HDA_COMPONENT_H */