diff options
| author | Takashi Iwai <tiwai@suse.de> | 2007-08-10 17:03:40 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2007-10-16 15:58:41 +0200 |
| commit | b3ac56364126f78cae94eb2a75b72d9ea85aca9d (patch) | |
| tree | 8f4865f1f888d612697452ab280922440e67e24f /sound/pci/hda/hda_codec.h | |
| parent | 01751f54ff23b9d59e07f9c9ef189d4733525463 (diff) | |
[ALSA] hda-codec - introduce command register cache
This patch adds the cache for codec command registers.
snd_hda_codec_write_cache() and snd_hda_sequence_write_cache() do
the write operations with caching, which values can be resumed via
snd_hda_codec_resume_cache().
The patch introduces only the framework, and no codec code is using
this cache yet. It'll be implemented in the following patch.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'sound/pci/hda/hda_codec.h')
| -rw-r--r-- | sound/pci/hda/hda_codec.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h index 1a69743160c..ef94c9122c6 100644 --- a/sound/pci/hda/hda_codec.h +++ b/sound/pci/hda/hda_codec.h @@ -570,6 +570,7 @@ struct hda_codec { u32 *wcaps; struct hda_cache_rec amp_cache; /* cache for amp access */ + struct hda_cache_rec cmd_cache; /* cache for other commands */ struct mutex spdif_mutex; unsigned int spdif_status; /* IEC958 status bits */ @@ -620,6 +621,13 @@ void snd_hda_sequence_write(struct hda_codec *codec, /* unsolicited event */ int snd_hda_queue_unsol_event(struct hda_bus *bus, u32 res, u32 res_ex); +/* cached write */ +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, + const struct hda_verb *seq); +void snd_hda_codec_resume_cache(struct hda_codec *codec); + /* * Mixer */ |