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asoc: tegra-alt: t210: add dai ops for bclk_ratio

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added dai ops for setting up bit clock ratio.

Change-Id: I5dde689d8228070911eb772d65f2d619f3a96d91
Signed-off-by: Dara Ramesh <dramesh@nvidia.com>
Reviewed-on: http://git-master/r/437135
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Sumit Bhattacharya <sumitb@nvidia.com>
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
This commit is contained in:
Dara Ramesh
2014-07-11 16:44:33 +05:30
committed by Sameer Pujar
parent 81b5f0ecbd
commit b5df7e81f5
1 changed files with 16 additions and 3 deletions
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19
sound/soc/tegra-alt/tegra210_i2s_alt.c
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@@ -196,6 +196,14 @@ static int tegra210_i2s_set_dai_sysclk(struct snd_soc_dai *dai,
return 0; return 0;
} }
static int tegra210_i2s_set_dai_bclk_ratio(struct snd_soc_dai *dai,
unsigned int ratio)
{
struct tegra210_i2s *i2s = snd_soc_dai_get_drvdata(dai);
i2s->bclk_ratio = ratio;
return 0;
}
static int tegra210_i2s_hw_params(struct snd_pcm_substream *substream, static int tegra210_i2s_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params, struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai) struct snd_soc_dai *dai)
@@ -240,14 +248,17 @@ static int tegra210_i2s_hw_params(struct snd_pcm_substream *substream,
frame_format = val & TEGRA210_I2S_CTRL_FRAME_FORMAT_MASK; frame_format = val & TEGRA210_I2S_CTRL_FRAME_FORMAT_MASK;
if (frame_format == TEGRA210_I2S_CTRL_FRAME_FORMAT_FSYNC_MODE) { if (frame_format == TEGRA210_I2S_CTRL_FRAME_FORMAT_FSYNC_MODE) {
i2sclock = srate * channels * sample_size;
regmap_write(i2s->regmap, TEGRA210_I2S_SLOT_CTRL, channels - 1); regmap_write(i2s->regmap, TEGRA210_I2S_SLOT_CTRL, channels - 1);
regmap_write(i2s->regmap, TEGRA210_I2S_AXBAR_TX_SLOT_CTRL, regmap_write(i2s->regmap, TEGRA210_I2S_AXBAR_TX_SLOT_CTRL,
((1 << channels) - 1)); ((1 << channels) - 1));
regmap_write(i2s->regmap, TEGRA210_I2S_AXBAR_RX_SLOT_CTRL, regmap_write(i2s->regmap, TEGRA210_I2S_AXBAR_RX_SLOT_CTRL,
((1 << channels) - 1)); ((1 << channels) - 1));
} else }
i2sclock = srate * channels * sample_size * 2;
i2sclock = srate * channels * sample_size;
if (i2s->bclk_ratio != 0)
i2sclock *= i2s->bclk_ratio;
bitcnt = (i2sclock / srate) - 1; bitcnt = (i2sclock / srate) - 1;
if ((bitcnt < 0) || if ((bitcnt < 0) ||
@@ -330,6 +341,7 @@ static struct snd_soc_dai_ops tegra210_i2s_dai_ops = {
.set_fmt = tegra210_i2s_set_fmt, .set_fmt = tegra210_i2s_set_fmt,
.hw_params = tegra210_i2s_hw_params, .hw_params = tegra210_i2s_hw_params,
.set_sysclk = tegra210_i2s_set_dai_sysclk, .set_sysclk = tegra210_i2s_set_dai_sysclk,
.set_bclk_ratio = tegra210_i2s_set_dai_bclk_ratio,
}; };
static struct snd_soc_dai_driver tegra210_i2s_dais[] = { static struct snd_soc_dai_driver tegra210_i2s_dais[] = {
@@ -540,6 +552,7 @@ static int tegra210_i2s_platform_probe(struct platform_device *pdev)
dev_set_drvdata(&pdev->dev, i2s); dev_set_drvdata(&pdev->dev, i2s);
i2s->soc_data = soc_data; i2s->soc_data = soc_data;
i2s->bclk_ratio = 2;
/* initialize srate with default sampling rate */ /* initialize srate with default sampling rate */
i2s->srate = 48000; i2s->srate = 48000;