[alsa-devel] [PATCH 11/31] HDA patch_via.c: When changing input source, update jack power state.

[Li Bo]

[ALSA] HDA VIA: When changing input source, update jack power state.

Signed-off-by: Lydia Wang <lydiawang at viatech.com.cn>

Index: sound-2.6/sound/pci/hda/patch_via.c
===================================================================
--- sound-2.6.orig/sound/pci/hda/patch_via.c	2009-10-05 15:09:55.000000000 +0800
+++ sound-2.6/sound/pci/hda/patch_via.c	2009-10-05 15:10:05.000000000 +0800
@@ -548,6 +548,14 @@

 	if (!spec->mux_nids[adc_idx])
 		return -EINVAL;
+	/* switch to D0 beofre change index */
+	if (snd_hda_codec_read(codec, spec->mux_nids[adc_idx], 0,
+			       AC_VERB_GET_POWER_STATE, 0x00) != AC_PWRST_D0)
+		snd_hda_codec_write(codec, spec->mux_nids[adc_idx], 0,
+				    AC_VERB_SET_POWER_STATE, AC_PWRST_D0);
+	/* update jack power state */
+	set_jack_power_state(codec);
+
 	return snd_hda_input_mux_put(codec, spec->input_mux, ucontrol,
 				     spec->mux_nids[adc_idx],
 				     &spec->cur_mux[adc_idx]);