linux-kernel - [PATCH v3 3/3] ASoC: fsl_sai: Replace synchronous check with fsl_sai_dir_is

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Date:   Wed,  5 Aug 2020 14:34:13 +0800
From:   Shengjiu Wang <shengjiu.wang@....com>
To:     timur@...nel.org, nicoleotsuka@...il.com, Xiubo.Lee@...il.com,
        festevam@...il.com, lgirdwood@...il.com, broonie@...nel.org,
        perex@...ex.cz, tiwai@...e.com, alsa-devel@...a-project.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 3/3] ASoC: fsl_sai: Replace synchronous check with fsl_sai_dir_is_synced

As new function fsl_sai_dir_is_synced is included for checking if
stream is synced by the opposite stream, then replace the existing
synchronous checking with this new function.

Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
---
 sound/soc/fsl/fsl_sai.c | 40 ++++++++++++++++------------------------
 1 file changed, 16 insertions(+), 24 deletions(-)

diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index 334090d581ae..f6969a5d49e3 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -350,6 +350,8 @@ static int fsl_sai_set_bclk(struct snd_soc_dai *dai, bool tx, u32 freq)
 	unsigned int ofs = sai->soc_data->reg_offset;
 	unsigned long clk_rate;
 	u32 savediv = 0, ratio, savesub = freq;
+	int adir = tx ? RX : TX;
+	int dir = tx ? TX : RX;
 	u32 id;
 	int ret = 0;
 
@@ -408,19 +410,17 @@ static int fsl_sai_set_bclk(struct snd_soc_dai *dai, bool tx, u32 freq)
 	 * 4) For Tx and Rx are both Synchronous with another SAI, we just
 	 *    ignore it.
 	 */
-	if ((sai->synchronous[TX] && !sai->synchronous[RX]) ||
-	    (!tx && !sai->synchronous[RX])) {
-		regmap_update_bits(sai->regmap, FSL_SAI_RCR2(ofs),
+	if (fsl_sai_dir_is_synced(sai, adir)) {
+		regmap_update_bits(sai->regmap, FSL_SAI_xCR2(!tx, ofs),
 				   FSL_SAI_CR2_MSEL_MASK,
 				   FSL_SAI_CR2_MSEL(sai->mclk_id[tx]));
-		regmap_update_bits(sai->regmap, FSL_SAI_RCR2(ofs),
+		regmap_update_bits(sai->regmap, FSL_SAI_xCR2(!tx, ofs),
 				   FSL_SAI_CR2_DIV_MASK, savediv - 1);
-	} else if ((sai->synchronous[RX] && !sai->synchronous[TX]) ||
-		   (tx && !sai->synchronous[TX])) {
-		regmap_update_bits(sai->regmap, FSL_SAI_TCR2(ofs),
+	} else if (!sai->synchronous[dir]) {
+		regmap_update_bits(sai->regmap, FSL_SAI_xCR2(tx, ofs),
 				   FSL_SAI_CR2_MSEL_MASK,
 				   FSL_SAI_CR2_MSEL(sai->mclk_id[tx]));
-		regmap_update_bits(sai->regmap, FSL_SAI_TCR2(ofs),
+		regmap_update_bits(sai->regmap, FSL_SAI_xCR2(tx, ofs),
 				   FSL_SAI_CR2_DIV_MASK, savediv - 1);
 	}
 
@@ -442,6 +442,7 @@ static int fsl_sai_hw_params(struct snd_pcm_substream *substream,
 	u32 val_cr4 = 0, val_cr5 = 0;
 	u32 slots = (channels == 1) ? 2 : channels;
 	u32 slot_width = word_width;
+	int adir = tx ? RX : TX;
 	int ret;
 
 	if (sai->slots)
@@ -491,22 +492,13 @@ static int fsl_sai_hw_params(struct snd_pcm_substream *substream,
 	 * RCR5(TCR5) for playback(capture), or there will be sync error.
 	 */
 
-	if (!sai->is_slave_mode) {
-		if (!sai->synchronous[TX] && sai->synchronous[RX] && !tx) {
-			regmap_update_bits(sai->regmap, FSL_SAI_TCR4(ofs),
-				FSL_SAI_CR4_SYWD_MASK | FSL_SAI_CR4_FRSZ_MASK,
-				val_cr4);
-			regmap_update_bits(sai->regmap, FSL_SAI_TCR5(ofs),
-				FSL_SAI_CR5_WNW_MASK | FSL_SAI_CR5_W0W_MASK |
-				FSL_SAI_CR5_FBT_MASK, val_cr5);
-		} else if (!sai->synchronous[RX] && sai->synchronous[TX] && tx) {
-			regmap_update_bits(sai->regmap, FSL_SAI_RCR4(ofs),
-				FSL_SAI_CR4_SYWD_MASK | FSL_SAI_CR4_FRSZ_MASK,
-				val_cr4);
-			regmap_update_bits(sai->regmap, FSL_SAI_RCR5(ofs),
-				FSL_SAI_CR5_WNW_MASK | FSL_SAI_CR5_W0W_MASK |
-				FSL_SAI_CR5_FBT_MASK, val_cr5);
-		}
+	if (!sai->is_slave_mode && fsl_sai_dir_is_synced(sai, adir)) {
+		regmap_update_bits(sai->regmap, FSL_SAI_xCR4(!tx, ofs),
+				   FSL_SAI_CR4_SYWD_MASK | FSL_SAI_CR4_FRSZ_MASK,
+				   val_cr4);
+		regmap_update_bits(sai->regmap, FSL_SAI_xCR5(!tx, ofs),
+				   FSL_SAI_CR5_WNW_MASK | FSL_SAI_CR5_W0W_MASK |
+				   FSL_SAI_CR5_FBT_MASK, val_cr5);
 	}
 
 	regmap_update_bits(sai->regmap, FSL_SAI_xCR4(tx, ofs),
-- 
2.27.0