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>

2 files changed, 14 insertions, 0 deletions

diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index f07833b42edd..58ee64594f07 100644
--- 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 a54ee35e1e5c..dc6e2c74d088 100644
--- 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)