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 #include <sound/hdaudio.h>
   9
  10 /* virtual idx for controller */
  11 #define HDA_CODEC_IDX_CONTROLLER        HDA_MAX_CODECS
  12
  13 #ifdef CONFIG_SND_HDA_COMPONENT
  14 int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable);
  15 void snd_hdac_display_power(struct hdac_bus *bus, unsigned int idx,
  16                             bool enable);
  17 int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
  18                              int dev_id, int rate);
  19 int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id,
  20                            bool *audio_enabled, char *buffer, int max_bytes);
  21 int snd_hdac_acomp_init(struct hdac_bus *bus,
  22                         const struct drm_audio_component_audio_ops *aops,
  23                         int (*match_master)(struct device *, int, void *),
  24                         size_t extra_size);
  25 int snd_hdac_acomp_exit(struct hdac_bus *bus);
  26 int snd_hdac_acomp_register_notifier(struct hdac_bus *bus,
  27                                     const struct drm_audio_component_audio_ops *ops);
  28 #else
  29 static inline int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable)
  30 {
  31         return 0;
  32 }
  33 static inline void snd_hdac_display_power(struct hdac_bus *bus,
  34                                           unsigned int idx, bool enable)
  35 {
  36 }
  37 static inline int snd_hdac_sync_audio_rate(struct hdac_device *codec,
  38                                            hda_nid_t nid, int dev_id, int rate)
  39 {
  40         return 0;
  41 }
  42 static inline int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid,
  43                                          int dev_id, bool *audio_enabled,
  44                                          char *buffer, int max_bytes)
  45 {
  46         return -ENODEV;
  47 }
  48 static inline int snd_hdac_acomp_init(struct hdac_bus *bus,
  49                                       const struct drm_audio_component_audio_ops *aops,
  50                                       int (*match_master)(struct device *,
  51                                                           int, void *),
  52                                       size_t extra_size)
  53 {
  54         return -ENODEV;
  55 }
  56 static inline int snd_hdac_acomp_exit(struct hdac_bus *bus)
  57 {
  58         return 0;
  59 }
  60 static inline int snd_hdac_acomp_register_notifier(struct hdac_bus *bus,
  61                                                   const struct drm_audio_component_audio_ops *ops)
  62 {
  63         return -ENODEV;
  64 }
  65 #endif
  66
  67 #endif /* __SOUND_HDA_COMPONENT_H */