At Thu, 7 Jun 2012 16:52:33 +0800, Wang Xingchao wrote:
D2 allows for the lowest possible power consuming state from which it can return to "fully on" state D0 within 2ms. For modems, it's the "wake on ring" power state.
Signed-off-by: Wang Xingchao xingchao.wang@intel.com
sound/pci/hda/hda_codec.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 2737fe7..d0ca370 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -3542,6 +3542,18 @@ static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg, snd_hda_codec_set_power_to_all(codec, fg, power_state, true); }
+/* modem wake on ring: transition from D2 to D0 in less than 2ms. For modems,
- this is the wake-on-ring power state */
+static void hda_modem_wake_on_ring(struct hda_codec *codec, bool enter) +{
- if (codec->mfg) {
if (enter)hda_set_power_state(codec, codec->mfg, AC_PWRST_D2);elsehda_set_power_state(codec, codec->mfg, AC_PWRST_D0);- }
+}
#ifdef CONFIG_SND_HDA_HWDEP /* execute additional init verbs */ static void hda_exec_init_verbs(struct hda_codec *codec)
No caller of the new function? Otherwise it's useless...
Takashi