On 9/12/17 3:12 AM, Bard Liao wrote:
We need to set a specific bit for 50 bclk rate. So add set_bclk_ratio function to set the bit.
When is this supposed to be used? the cht_bsw_rt5672 machine driver uses a 19.2MHz MCLK/2.4 MHz bclk, so there's a typical 50x ratio.
Signed-off-by: Bard Liao bardliao@realtek.com
v2:
- add define for tdm data format select bit.
sound/soc/codecs/rt5670.c | 19 +++++++++++++++++++ sound/soc/codecs/rt5670.h | 4 ++++ 2 files changed, 23 insertions(+)
diff --git a/sound/soc/codecs/rt5670.c b/sound/soc/codecs/rt5670.c index 9545764..da7614c 100644 --- a/sound/soc/codecs/rt5670.c +++ b/sound/soc/codecs/rt5670.c @@ -2582,6 +2582,24 @@ static int rt5670_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, return 0; }
+static int rt5670_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio) +{
- struct snd_soc_codec *codec = dai->codec;
- dev_dbg(codec->dev, "%s ratio=%d\n", __func__, ratio);
- if (dai->id != RT5670_AIF1)
return 0;- if (ratio == 50)
snd_soc_update_bits(codec, RT5670_GEN_CTRL3,RT5670_TDM_DATA_MODE_SEL, RT5670_TDM_DATA_MODE_50FS);- else
snd_soc_update_bits(codec, RT5670_GEN_CTRL3,RT5670_TDM_DATA_MODE_SEL, RT5670_TDM_DATA_MODE_NOR);- return 0;
+}
- static int rt5670_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) {
@@ -2712,6 +2730,7 @@ static const struct snd_soc_dai_ops rt5670_aif_dai_ops = { .set_fmt = rt5670_set_dai_fmt, .set_tdm_slot = rt5670_set_tdm_slot, .set_pll = rt5670_set_dai_pll,
.set_bclk_ratio = rt5670_set_bclk_ratio, };
static struct snd_soc_dai_driver rt5670_dai[] = {
diff --git a/sound/soc/codecs/rt5670.h b/sound/soc/codecs/rt5670.h index 5ba485c..265df80 100644 --- a/sound/soc/codecs/rt5670.h +++ b/sound/soc/codecs/rt5670.h @@ -1816,6 +1816,10 @@ #define RT5670_ZCD_HP_DIS (0x0 << 15) #define RT5670_ZCD_HP_EN (0x1 << 15)
+/* General Control 3 (0xfc) */ +#define RT5670_TDM_DATA_MODE_SEL (0x1 << 11) +#define RT5670_TDM_DATA_MODE_NOR (0x0 << 11) +#define RT5670_TDM_DATA_MODE_50FS (0x1 << 11)
/* Codec Private Register definition */ /* 3D Speaker Control (0x63) */