Unverified Commit ebfea671 authored by Sugar Zhang's avatar Sugar Zhang Committed by Mark Brown
Browse files

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



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

Signed-off-by: default avatarSugar 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: default avatarMark Brown <broonie@kernel.org>
parent 2fd276c3

sound/soc/rockchip/rockchip_i2s.c

+15 −1
Original line number Diff line number Diff line
@@ -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);