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ASoC: rockchip: i2s: Add support for set bclk ratio

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This patch adds support for set bclk ratio from machine driver.

Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Link: https://lore.kernel.org/r/1629950520-14190-1-git-send-email-sugar.zhang@rock-chips.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sugar Zhang 2021-08-26 12:01:47 +08:00 committed by Mark Brown
parent 2fd276c3ee
commit ebfea67125
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 15 additions and 1 deletions
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16
sound/soc/rockchip/rockchip_i2s.c
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@ -49,6 +49,7 @@ struct rk_i2s_dev {
bool rx_start;
bool is_master_mode;
const struct rk_i2s_pins *pins;
unsigned int bclk_ratio;
};
static int i2s_runtime_suspend(struct device *dev)
@ -278,7 +279,7 @@ static int rockchip_i2s_hw_params(struct snd_pcm_substream *substream,
if (i2s->is_master_mode) {
mclk_rate = clk_get_rate(i2s->mclk);
bclk_rate = 2 * 32 * params_rate(params);
bclk_rate = i2s->bclk_ratio * params_rate(params);
if (bclk_rate == 0 || mclk_rate % bclk_rate)
return -EINVAL;
@ -413,6 +414,16 @@ static int rockchip_i2s_trigger(struct snd_pcm_substream *substream,
return ret;
}
static int rockchip_i2s_set_bclk_ratio(struct snd_soc_dai *dai,
unsigned int ratio)
{
struct rk_i2s_dev *i2s = to_info(dai);
i2s->bclk_ratio = ratio;
return 0;
}
static int rockchip_i2s_set_sysclk(struct snd_soc_dai *cpu_dai, int clk_id,
unsigned int freq, int dir)
{
@ -441,6 +452,7 @@ static int rockchip_i2s_dai_probe(struct snd_soc_dai *dai)
static const struct snd_soc_dai_ops rockchip_i2s_dai_ops = {
.hw_params = rockchip_i2s_hw_params,
.set_bclk_ratio = rockchip_i2s_set_bclk_ratio,
.set_sysclk = rockchip_i2s_set_sysclk,
.set_fmt = rockchip_i2s_set_fmt,
.trigger = rockchip_i2s_trigger,
@ -638,6 +650,8 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
i2s->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
i2s->capture_dma_data.maxburst = 4;
i2s->bclk_ratio = 64;
dev_set_drvdata(&pdev->dev, i2s);
pm_runtime_enable(&pdev->dev);