From: Vinod Koul <vinod.koul@intel.com>
Date: Thu, 6 Oct 2011 15:18:33 +0000 (+0100)
Subject: ASoC: sn95031: enable the DMIC bias
X-Git-Tag: 2.1b_release~1980
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=754a6399169973ac7a8d2a1050cf41dab2e762ef;p=kernel%2Fkernel-mfld-blackbay.git

ASoC: sn95031: enable the DMIC bias

this patch enables the digital mic bias when the digital mics are in use

Change-Id: I5283b7369d3610f0fafcbdb4d869055f0caeddb8
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---

diff --git a/sound/soc/codecs/sn95031.c b/sound/soc/codecs/sn95031.c
index e80e0b0..3d24575 100644
--- a/sound/soc/codecs/sn95031.c
+++ b/sound/soc/codecs/sn95031.c
@@ -219,47 +219,64 @@ static int sn95031_vihf_event(struct snd_soc_dapm_widget *w,
 static int sn95031_dmic12_event(struct snd_soc_dapm_widget *w,
 			struct snd_kcontrol *k, int event)
 {
-	unsigned int ldo = 0, clk_dir = 0, data_dir = 0;
+	unsigned int ldo = 0, clk_dir = 0, data_dir = 0, bias = 0;
 
+	pr_debug("sn95031_dmic12_event\n");
 	if (SND_SOC_DAPM_EVENT_ON(event)) {
+		pr_debug("sn95031_dmic12_eventi ON\n");
 		ldo = BIT(5)|BIT(4);
 		clk_dir = BIT(0);
 		data_dir = BIT(7);
+		bias = BIT(3);
 	}
 	/* program DMIC LDO, clock and set clock */
 	snd_soc_update_bits(w->codec, SN95031_MICBIAS, BIT(5)|BIT(4), ldo);
 	snd_soc_update_bits(w->codec, SN95031_DMICBUF0123, BIT(0), clk_dir);
 	snd_soc_update_bits(w->codec, SN95031_DMICBUF0123, BIT(7), data_dir);
+	snd_soc_update_bits(w->codec, SN95031_DMICMUX, BIT(3), bias);
 	return 0;
 }
 
 static int sn95031_dmic34_event(struct snd_soc_dapm_widget *w,
 			struct snd_kcontrol *k, int event)
 {
-	unsigned int ldo = 0, clk_dir = 0, data_dir = 0;
+	unsigned int ldo = 0, clk_dir = 0, data_dir = 0, bias = 0;
 
+	pr_debug("sn95031_dmic34_event\n");
 	if (SND_SOC_DAPM_EVENT_ON(event)) {
+		pr_debug("sn95031_dmic34_event ON\n");
 		ldo = BIT(5)|BIT(4);
 		clk_dir = BIT(2);
 		data_dir = BIT(1);
+		bias = BIT(4);
 	}
 	/* program DMIC LDO, clock and set clock */
 	snd_soc_update_bits(w->codec, SN95031_MICBIAS, BIT(5)|BIT(4), ldo);
 	snd_soc_update_bits(w->codec, SN95031_DMICBUF0123, BIT(2), clk_dir);
 	snd_soc_update_bits(w->codec, SN95031_DMICBUF45, BIT(1), data_dir);
+	snd_soc_update_bits(w->codec, SN95031_DMICMUX, BIT(4), bias);
 	return 0;
 }
 
 static int sn95031_dmic56_event(struct snd_soc_dapm_widget *w,
 			struct snd_kcontrol *k, int event)
 {
-	unsigned int ldo = 0;
+	unsigned int ldo = 0, clk_dir = 0, data_dir = 0, bias = 0;
 
-	if (SND_SOC_DAPM_EVENT_ON(event))
+	pr_debug("sn95031_dmic56_event\n");
+	if (SND_SOC_DAPM_EVENT_ON(event)) {
+		pr_debug("sn95031_dmic56_event ON\n");
 		ldo = BIT(7)|BIT(6);
+		clk_dir = BIT(4);
+		data_dir = BIT(3);
+		bias = BIT(5);
+	}
 
 	/* program DMIC LDO */
 	snd_soc_update_bits(w->codec, SN95031_MICBIAS, BIT(7)|BIT(6), ldo);
+	snd_soc_update_bits(w->codec, SN95031_DMICBUF0123, BIT(4), clk_dir);
+	snd_soc_update_bits(w->codec, SN95031_DMICBUF45, BIT(3), data_dir);
+	snd_soc_update_bits(w->codec, SN95031_DMICMUX, BIT(5), bias);
 	return 0;
 }