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Subject[PATCH v2 2/3] ASoC: qcom: apq8016-sbc: set default mclk rate
Date
From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

MCLK for internal audio codec is expected to be at 9.6MHz by default.
This patch adds support to 9.6MHz to make the default case possible.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
sound/soc/qcom/apq8016_sbc.c | 23 +++++++++++++++++++----
1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/sound/soc/qcom/apq8016_sbc.c b/sound/soc/qcom/apq8016_sbc.c
index d084d74..f07aa1e 100644
--- a/sound/soc/qcom/apq8016_sbc.c
+++ b/sound/soc/qcom/apq8016_sbc.c
@@ -34,13 +34,16 @@ struct apq8016_sbc_data {
#define MIC_CTRL_QUA_WS_SLAVE_SEL_10 BIT(17)
#define MIC_CTRL_TLMM_SCLK_EN BIT(1)
#define SPKR_CTL_PRI_WS_SLAVE_SEL_11 (BIT(17) | BIT(16))
+#define DEFAULT_MCLK_RATE 9600000

static int apq8016_sbc_dai_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ struct snd_soc_codec *codec;
+ struct snd_soc_dai_link *dai_link = rtd->dai_link;
struct snd_soc_card *card = rtd->card;
struct apq8016_sbc_data *pdata = snd_soc_card_get_drvdata(card);
- int rval = 0;
+ int i, rval;

switch (cpu_dai->id) {
case MI2S_PRIMARY:
@@ -63,12 +66,24 @@ static int apq8016_sbc_dai_init(struct snd_soc_pcm_runtime *rtd)

default:
dev_err(card->dev, "unsupported cpu dai configuration\n");
- rval = -EINVAL;
- break;
+ return -EINVAL;
+
+ }

+ for (i = 0 ; i < dai_link->num_codecs; i++) {
+ struct snd_soc_dai *dai = rtd->codec_dais[i];
+
+ codec = dai->codec;
+ /* Set default mclk for internal codec */
+ rval = snd_soc_codec_set_sysclk(codec, 0, 0, DEFAULT_MCLK_RATE,
+ SND_SOC_CLOCK_IN);
+ if (rval != 0 && rval != -ENOTSUPP) {
+ dev_warn(card->dev, "Failed to set mclk: %d\n", rval);
+ return rval;
+ }
}

- return rval;
+ return 0;
}

static struct apq8016_sbc_data *apq8016_sbc_parse_of(struct snd_soc_card *card)
--
2.9.3
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