At Wed, 6 Jun 2012 22:02:48 +0800, Wang Xingchao wrote:
Add function to check whether power states supported by specific codec node.
Signed-off-by: Wang Xingchao xingchao.wang@intel.com
Applied together with v2 patch. Thanks.
Takashi
sound/pci/hda/hda_codec.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 41ca803..b89c8ec 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -3505,6 +3505,22 @@ void snd_hda_codec_set_power_to_all(struct hda_codec *codec, hda_nid_t fg, EXPORT_SYMBOL_HDA(snd_hda_codec_set_power_to_all);
/*
- supported power states check
- */
+static bool snd_hda_codec_get_supported_ps(struct hda_codec *codec, hda_nid_t fg,
unsigned int power_state)+{
- int sup = snd_hda_param_read(codec, fg, AC_PAR_POWER_STATE);
- if (sup < 0)
return false;- if (sup & power_state)
return true;- else
return false;+}
+/*
- set power state of the codec
*/ static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg, -- 1.7.9.5