diff options
Diffstat (limited to 'sound/pci/hda/hda_codec.h')
| -rw-r--r-- | sound/pci/hda/hda_codec.h | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h index 92938d2a52e2..1ffffaa3a30d 100644 --- a/sound/pci/hda/hda_codec.h +++ b/sound/pci/hda/hda_codec.h @@ -26,6 +26,10 @@ #include <sound/pcm.h> #include <sound/hwdep.h> +#if defined(CONFIG_PM) || defined(CONFIG_SND_HDA_POWER_SAVE) +#define SND_HDA_NEEDS_RESUME /* resume control code is required */ +#endif + /* * nodes */ @@ -412,6 +416,10 @@ struct hda_bus_ops { unsigned int (*get_response)(struct hda_codec *codec); /* free the private data */ void (*private_free)(struct hda_bus *); +#ifdef CONFIG_SND_HDA_POWER_SAVE + /* notify power-up/down from codec to contoller */ + void (*pm_notify)(struct hda_codec *codec); +#endif }; /* template to pass to the bus constructor */ @@ -473,10 +481,13 @@ struct hda_codec_ops { int (*init)(struct hda_codec *codec); void (*free)(struct hda_codec *codec); void (*unsol_event)(struct hda_codec *codec, unsigned int res); -#ifdef CONFIG_PM +#ifdef SND_HDA_NEEDS_RESUME int (*suspend)(struct hda_codec *codec, pm_message_t state); int (*resume)(struct hda_codec *codec); #endif +#ifdef CONFIG_SND_HDA_POWER_SAVE + int (*check_power_status)(struct hda_codec *codec, hda_nid_t nid); +#endif }; /* record for amp information cache */ @@ -573,6 +584,12 @@ struct hda_codec { unsigned int spdif_in_enable; /* SPDIF input enable? */ struct snd_hwdep *hwdep; /* assigned hwdep device */ + +#ifdef CONFIG_SND_HDA_POWER_SAVE + int power_on; /* current (global) power-state */ + int power_count; /* current (global) power refcount */ + struct delayed_work power_work; /* delayed task for powerdown */ +#endif }; /* direction */ @@ -617,7 +634,7 @@ void snd_hda_sequence_write(struct hda_codec *codec, int snd_hda_queue_unsol_event(struct hda_bus *bus, u32 res, u32 res_ex); /* cached write */ -#ifdef CONFIG_PM +#ifdef SND_HDA_NEEDS_RESUME int snd_hda_codec_write_cache(struct hda_codec *codec, hda_nid_t nid, int direct, unsigned int verb, unsigned int parm); void snd_hda_sequence_write_cache(struct hda_codec *codec, @@ -662,4 +679,15 @@ int snd_hda_suspend(struct hda_bus *bus, pm_message_t state); int snd_hda_resume(struct hda_bus *bus); #endif +/* + * power saving + */ +#ifdef CONFIG_SND_HDA_POWER_SAVE +void snd_hda_power_up(struct hda_codec *codec); +void snd_hda_power_down(struct hda_codec *codec); +#else +static inline void snd_hda_power_up(struct hda_codec *codec) {} +static inline void snd_hda_power_down(struct hda_codec *codec) {} +#endif + #endif /* __SOUND_HDA_CODEC_H */ |