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ASoC: da7213: add support for DSP modes 

DSP modes are documented in the data sheet but not enabled in the driver.
The work-around already implemented for DA7218/9 is also required to
make sure the bit clock handling in DSP modes follows ASoC conventions.

Tested with ARD-AUDIO-DA7212 and Minnowmax Turbot boards

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Pierre-Louis Bossart 2017-11-08 16:42:31 -06:00 committed by Mark Brown
parent 2bd6bf03f4
commit e0d746cc01
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 49 additions and 10 deletions
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58
sound/soc/codecs/da7213.c
View File

@ -1220,6 +1220,7 @@ static int da7213_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
struct snd_soc_codec *codec = codec_dai->codec;
struct da7213_priv *da7213 = snd_soc_codec_get_drvdata(codec);
u8 dai_clk_mode = 0, dai_ctrl = 0;
u8 dai_offset = 0;
/* Set master/slave mode */
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
@ -1234,17 +1235,46 @@ static int da7213_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
}
/* Set clock normal/inverted */
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
case SND_SOC_DAIFMT_LEFT_J:
case SND_SOC_DAIFMT_RIGHT_J:
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_NB_IF:
dai_clk_mode |= DA7213_DAI_WCLK_POL_INV;
break;
case SND_SOC_DAIFMT_IB_NF:
dai_clk_mode |= DA7213_DAI_CLK_POL_INV;
break;
case SND_SOC_DAIFMT_IB_IF:
dai_clk_mode |= DA7213_DAI_WCLK_POL_INV |
DA7213_DAI_CLK_POL_INV;
break;
default:
return -EINVAL;
}
break;
case SND_SOC_DAIFMT_NB_IF:
dai_clk_mode |= DA7213_DAI_WCLK_POL_INV;
break;
case SND_SOC_DAIFMT_IB_NF:
dai_clk_mode |= DA7213_DAI_CLK_POL_INV;
break;
case SND_SOC_DAIFMT_IB_IF:
dai_clk_mode |= DA7213_DAI_WCLK_POL_INV | DA7213_DAI_CLK_POL_INV;
case SND_SOC_DAI_FORMAT_DSP_A:
case SND_SOC_DAI_FORMAT_DSP_B:
/* The bclk is inverted wrt ASoC conventions */
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
dai_clk_mode |= DA7213_DAI_CLK_POL_INV;
break;
case SND_SOC_DAIFMT_NB_IF:
dai_clk_mode |= DA7213_DAI_WCLK_POL_INV |
DA7213_DAI_CLK_POL_INV;
break;
case SND_SOC_DAIFMT_IB_NF:
break;
case SND_SOC_DAIFMT_IB_IF:
dai_clk_mode |= DA7213_DAI_WCLK_POL_INV;
break;
default:
return -EINVAL;
}
break;
default:
return -EINVAL;
@ -1261,6 +1291,13 @@ static int da7213_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
case SND_SOC_DAIFMT_RIGHT_J:
dai_ctrl |= DA7213_DAI_FORMAT_RIGHT_J;
break;
case SND_SOC_DAI_FORMAT_DSP_A: /* L data MSB after FRM LRC */
dai_ctrl |= DA7213_DAI_FORMAT_DSP;
dai_offset = 1;
break;
case SND_SOC_DAI_FORMAT_DSP_B: /* L data MSB during FRM LRC */
dai_ctrl |= DA7213_DAI_FORMAT_DSP;
break;
default:
return -EINVAL;
}
@ -1271,6 +1308,7 @@ static int da7213_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
snd_soc_write(codec, DA7213_DAI_CLK_MODE, dai_clk_mode);
snd_soc_update_bits(codec, DA7213_DAI_CTRL, DA7213_DAI_FORMAT_MASK,
dai_ctrl);
snd_soc_write(codec, DA7213_DAI_OFFSET, dai_offset);
return 0;
}

1
sound/soc/codecs/da7213.h
View File

@ -188,6 +188,7 @@
#define DA7213_DAI_FORMAT_I2S_MODE (0x0 << 0)
#define DA7213_DAI_FORMAT_LEFT_J (0x1 << 0)
#define DA7213_DAI_FORMAT_RIGHT_J (0x2 << 0)
#define DA7213_DAI_FORMAT_DSP (0x3 << 0)
#define DA7213_DAI_FORMAT_MASK (0x3 << 0)
#define DA7213_DAI_WORD_LENGTH_S16_LE (0x0 << 2)
#define DA7213_DAI_WORD_LENGTH_S20_LE (0x1 << 2)