This patch adds support for set bclk ratio from machine driver.
Signed-off-by: Sugar Zhang <sugar.zhang@xxxxxxxxxxxxxx>
---
Changes in v2: None
sound/soc/rockchip/rockchip_i2s.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index c7dc350..c9d5c52 100644
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -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);
--
2.7.4
