ASoC: rockchip: i2s: share tx/rx lrck when symmetric_rates enabled

share lrck_tx to lrck_rx when symmetric_rates enabled.

Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index f07833b42eddc241196e2825a99876ee81eb83ad..58ee64594f075efb7327d1480113f1401e97f248 100644 (file)
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -226,6 +226,7 @@ static int rockchip_i2s_hw_params(struct snd_pcm_substream *substream,
                                  struct snd_soc_dai *dai)
 {
        struct rk_i2s_dev *i2s = to_info(dai);
+       struct snd_soc_pcm_runtime *rtd = substream->private_data;
        unsigned int val = 0;
 
        switch (params_format(params)) {
@@ -278,6 +279,13 @@ static int rockchip_i2s_hw_params(struct snd_pcm_substream *substream,
        regmap_update_bits(i2s->regmap, I2S_DMACR, I2S_DMACR_RDL_MASK,
                           I2S_DMACR_RDL(16));
 
+       val = I2S_CKR_TRCM_TXRX;
+       if (dai->driver->symmetric_rates || rtd->dai_link->symmetric_rates)
+               val = I2S_CKR_TRCM_TXSHARE;
+
+       regmap_update_bits(i2s->regmap, I2S_CKR,
+                          I2S_CKR_TRCM_MASK,
+                          val);
        return 0;
 }
 

diff --git a/sound/soc/rockchip/rockchip_i2s.h b/sound/soc/rockchip/rockchip_i2s.h
index a54ee35e1e5caff3fb3c6bffa8d9d19159269db0..dc6e2c74d08818bf68d333f2ca4d811eb914b7ed 100644 (file)
--- a/sound/soc/rockchip/rockchip_i2s.h
+++ b/sound/soc/rockchip/rockchip_i2s.h
@@ -78,6 +78,12 @@
  * CKR
  * clock generation register
 */
+#define I2S_CKR_TRCM_SHIFT     28
+#define I2S_CKR_TRCM(x)        (x << I2S_CKR_TRCM_SHIFT)
+#define I2S_CKR_TRCM_TXRX      (0 << I2S_CKR_TRCM_SHIFT)
+#define I2S_CKR_TRCM_TXSHARE   (1 << I2S_CKR_TRCM_SHIFT)
+#define I2S_CKR_TRCM_RXSHARE   (2 << I2S_CKR_TRCM_SHIFT)
+#define I2S_CKR_TRCM_MASK      (3 << I2S_CKR_TRCM_SHIFT)
 #define I2S_CKR_MSS_SHIFT      27
 #define I2S_CKR_MSS_MASTER     (0 << I2S_CKR_MSS_SHIFT)
 #define I2S_CKR_MSS_SLAVE      (1 << I2S_CKR_MSS_SHIFT)