[alsa-devel] [PATCH] ASoC: Blackfin: add ad193x sysclk configuration

[Mike Frysinger]

From: Scott Jiang <scott.jiang at analog.com>

Signed-off-by: Scott Jiang <scott.jiang at analog.com>
Signed-off-by: Mike Frysinger <vapier at gentoo.org>
---
 sound/soc/blackfin/bf5xx-ad193x.c |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/sound/soc/blackfin/bf5xx-ad193x.c b/sound/soc/blackfin/bf5xx-ad193x.c
index d3ccb92..3367882 100644
--- a/sound/soc/blackfin/bf5xx-ad193x.c
+++ b/sound/soc/blackfin/bf5xx-ad193x.c
@@ -60,8 +60,16 @@ static int bf5xx_ad193x_hw_params(struct snd_pcm_substream *substream,
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 	struct snd_soc_dai *codec_dai = rtd->codec_dai;
+	unsigned int clk = 0;
 	unsigned int channel_map[] = {0, 1, 2, 3, 4, 5, 6, 7};
 	int ret = 0;
+
+	switch (params_rate(params)) {
+	case 48000:
+		clk = 12288000;
+		break;
+	}
+
 	/* set cpu DAI configuration */
 	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
 		SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM);
@@ -74,6 +82,12 @@ static int bf5xx_ad193x_hw_params(struct snd_pcm_substream *substream,
 	if (ret < 0)
 		return ret;
 
+	/* set the codec system clock for DAC and ADC */
+	ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk,
+		SND_SOC_CLOCK_IN);
+	if (ret < 0)
+		return ret;
+
 	/* set codec DAI slots, 8 channels, all channels are enabled */
 	ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xFF, 0xFF, 8, 32);
 	if (ret < 0)
-- 
1.7.4.1