LXR linux/include/sound/hda

   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
  14int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable);
  15void snd_hdac_display_power(struct hdac_bus *bus, unsigned int idx,
  16                            bool enable);
  17int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid,
  18                             int dev_id, int rate);
  19int 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);
  21int 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);
  25int snd_hdac_acomp_exit(struct hdac_bus *bus);
  26int snd_hdac_acomp_register_notifier(struct hdac_bus *bus,
  27                                    const struct drm_audio_component_audio_ops *ops);
  28#else
  29static inline int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable)
  30{
  31        return 0;
  32}
  33static inline void snd_hdac_display_power(struct hdac_bus *bus,
  34                                          unsigned int idx, bool enable)
  35{
  36}
  37static 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}
  42static 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}
  48static 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}
  56static inline int snd_hdac_acomp_exit(struct hdac_bus *bus)
  57{
  58        return 0;
  59}
  60static 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 */
  68