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| author | Takashi Iwai | 2012-08-14 17:12:47 +0200 |
|---|---|---|
| committer | Takashi Iwai | 2012-08-20 11:46:05 +0200 |
| commit | c376e2c72ba2d510486d7dea41163dce5f5606ea (patch) | |
| tree | 6bf51453c5c9f54f1955ecb3330e576d357622d7 /sound/pci/hda/hda_codec.h | |
| parent | ALSA: hda - Add tracepoints at snd_hda_power_up/down entrances. (diff) | |
| download | kernel-qcow2-linux-c376e2c72ba2d510486d7dea41163dce5f5606ea.tar.gz kernel-qcow2-linux-c376e2c72ba2d510486d7dea41163dce5f5606ea.tar.xz kernel-qcow2-linux-c376e2c72ba2d510486d7dea41163dce5f5606ea.zip | |
ALSA: hda - Implement snd_hda_power_sync() helper function
Added a new helper function snd_hda_power_sync() to trigger the
power-saving manually. It's an inline function call to
snd_hda_power_save() helper function.
Together with this addition, snd_hda_power_up*() and
snd_hda_power_down() functions are inlined to a call of the same
snd_hda_power_save() helper function.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/hda_codec.h')
| -rw-r--r-- | sound/pci/hda/hda_codec.h | 60 |
1 files changed, 54 insertions, 6 deletions
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h index d772c2521cd9..1d4dfce631a0 100644 --- a/sound/pci/hda/hda_codec.h +++ b/sound/pci/hda/hda_codec.h @@ -1062,16 +1062,64 @@ const char *snd_hda_get_jack_location(u32 cfg); * power saving */ #ifdef CONFIG_SND_HDA_POWER_SAVE -void snd_hda_power_up(struct hda_codec *codec); -void snd_hda_power_up_d3wait(struct hda_codec *codec); -void snd_hda_power_down(struct hda_codec *codec); +void snd_hda_power_save(struct hda_codec *codec, int delta, bool d3wait); void snd_hda_update_power_acct(struct hda_codec *codec); #else -static inline void snd_hda_power_up(struct hda_codec *codec) {} -static inline void snd_hda_power_up_d3wait(struct hda_codec *codec) {} -static inline void snd_hda_power_down(struct hda_codec *codec) {} +static inline void snd_hda_power_save(struct hda_codec *codec, int delta, + bool d3wait) {} #endif +/** + * snd_hda_power_up - Power-up the codec + * @codec: HD-audio codec + * + * Increment the power-up counter and power up the hardware really when + * not turned on yet. + */ +static inline void snd_hda_power_up(struct hda_codec *codec) +{ + snd_hda_power_save(codec, 1, false); +} + +/** + * snd_hda_power_up_d3wait - Power-up the codec after waiting for any pending + * D3 transition to complete. This differs from snd_hda_power_up() when + * power_transition == -1. snd_hda_power_up sees this case as a nop, + * snd_hda_power_up_d3wait waits for the D3 transition to complete then powers + * back up. + * @codec: HD-audio codec + * + * Cancel any power down operation hapenning on the work queue, then power up. + */ +static inline void snd_hda_power_up_d3wait(struct hda_codec *codec) +{ + snd_hda_power_save(codec, 1, true); +} + +/** + * snd_hda_power_down - Power-down the codec + * @codec: HD-audio codec + * + * Decrement the power-up counter and schedules the power-off work if + * the counter rearches to zero. + */ +static inline void snd_hda_power_down(struct hda_codec *codec) +{ + snd_hda_power_save(codec, -1, false); +} + +/** + * snd_hda_power_sync - Synchronize the power-save status + * @codec: HD-audio codec + * + * Synchronize the actual power state with the power account; + * called when power_save parameter is changed + */ +static inline void snd_hda_power_sync(struct hda_codec *codec) +{ + snd_hda_power_save(codec, 0, false); +} + #ifdef CONFIG_SND_HDA_PATCH_LOADER /* * patch firmware |