MLK-19154-2: ASoC: fsl_spdif: keep all 7 TxClk sources

Use txclk array to keep all 7 TxClk sources instead of keeping clocks per
rate - need to do this in order to avoid multiple prepare_enable /
disable_unprepare of the same clock during suspend/resume.

Signed-off-by: Viorel Suman <viorel.suman@nxp.com>
(cherry picked from commit 61bc5c83af0713a09b520486051a2efcbe852763)

1 files changed, 19 insertions, 20 deletions

diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c
index 92956d2e3865..59214b148e28 100644
--- a/sound/soc/fsl/fsl_spdif.c
+++ b/sound/soc/fsl/fsl_spdif.c
@@ -110,7 +110,7 @@ struct fsl_spdif_priv {
 	u16 sysclk_df[SPDIF_TXRATE_MAX];
 	u8 txclk_src[SPDIF_TXRATE_MAX];
 	u8 rxclk_src;
-	struct clk *txclk[SPDIF_TXRATE_MAX];
+	struct clk *txclk[STC_TXCLK_SRC_MAX];
 	struct clk *rxclk;
 	struct clk *coreclk;
 	struct clk *sysclk;
@@ -474,7 +474,7 @@ static int spdif_set_sample_rate(struct snd_pcm_substream *substream,
 	dev_dbg(&pdev->dev, "expected clock rate = %d\n",
 			(64 * sample_rate * txclk_df * sysclk_df));
 	dev_dbg(&pdev->dev, "actual clock rate = %ld\n",
-			clk_get_rate(spdif_priv->txclk[rate]));
+			clk_get_rate(spdif_priv->txclk[clk]));
 
 	/* set fs field in consumer channel status */
 	spdif_set_cstatus(ctrl, IEC958_AES3_CON_FS, csfs);
@@ -1240,12 +1240,10 @@ static int fsl_spdif_probe_txclk(struct fsl_spdif_priv *spdif_priv,
 	struct device *dev = &pdev->dev;
 	u64 savesub = 100000, ret;
 	struct clk *clk;
-	char tmp[16];
 	int i;
 
 	for (i = 0; i < STC_TXCLK_SRC_MAX; i++) {
-		sprintf(tmp, "rxtx%d", i);
-		clk = devm_clk_get(&pdev->dev, tmp);
+		clk = spdif_priv->txclk[i];
 		if (IS_ERR(clk)) {
 			dev_err(dev, "no rxtx%d clock in devicetree\n", i);
 			return PTR_ERR(clk);
@@ -1259,7 +1257,6 @@ static int fsl_spdif_probe_txclk(struct fsl_spdif_priv *spdif_priv,
 			continue;
 
 		savesub = ret;
-		spdif_priv->txclk[index] = clk;
 		spdif_priv->txclk_src[index] = i;
 
 		/* To quick catch a divisor, we allow a 0.1% deviation */
@@ -1271,7 +1268,7 @@ static int fsl_spdif_probe_txclk(struct fsl_spdif_priv *spdif_priv,
 			spdif_priv->txclk_src[index], rate[index]);
 	dev_dbg(&pdev->dev, "use txclk df %d for %dHz sample rate\n",
 			spdif_priv->txclk_df[index], rate[index]);
-	if (clk_is_match(spdif_priv->txclk[index], spdif_priv->sysclk))
+	if (clk_is_match(spdif_priv->txclk[spdif_priv->txclk_src[index]], spdif_priv->sysclk))
 		dev_dbg(&pdev->dev, "use sysclk df %d for %dHz sample rate\n",
 				spdif_priv->sysclk_df[index], rate[index]);
 	dev_dbg(&pdev->dev, "the best rate for %dHz sample rate is %dHz\n",
@@ -1298,6 +1295,7 @@ static int fsl_spdif_probe(struct platform_device *pdev)
 	const struct of_device_id *of_id;
 	void __iomem *regs;
 	int irq, ret, i;
+	char tmp[16];
 
 	if (!np)
 		return -ENODEV;
@@ -1361,8 +1359,17 @@ static int fsl_spdif_probe(struct platform_device *pdev)
 		}
 	}
 
+	for (i = 0; i < STC_TXCLK_SRC_MAX; i++) {
+		sprintf(tmp, "rxtx%d", i);
+		spdif_priv->txclk[i] = devm_clk_get(&pdev->dev, tmp);
+		if (IS_ERR(spdif_priv->txclk[i])) {
+			dev_err(&pdev->dev, "no rxtx%d clock in devicetree\n", i);
+			return PTR_ERR(spdif_priv->txclk[i]);
+		}
+	}
+
 	/* Get system clock for rx clock rate calculation */
-	spdif_priv->sysclk = devm_clk_get(&pdev->dev, "rxtx5");
+	spdif_priv->sysclk = spdif_priv->txclk[5];
 	if (IS_ERR(spdif_priv->sysclk)) {
 		dev_err(&pdev->dev, "no sys clock (rxtx5) in devicetree\n");
 		return PTR_ERR(spdif_priv->sysclk);
@@ -1380,7 +1387,7 @@ static int fsl_spdif_probe(struct platform_device *pdev)
 		dev_warn(&pdev->dev, "no spba clock in devicetree\n");
 
 	/* Select clock source for rx/tx clock */
-	spdif_priv->rxclk = devm_clk_get(&pdev->dev, "rxtx1");
+	spdif_priv->rxclk = spdif_priv->txclk[1];
 	if (IS_ERR(spdif_priv->rxclk)) {
 		dev_err(&pdev->dev, "no rxtx1 clock in devicetree\n");
 		return PTR_ERR(spdif_priv->rxclk);
@@ -1454,16 +1461,12 @@ static int fsl_spdif_runtime_resume(struct device *dev)
 		}
 	}
 
-	for (i = 0; i < SPDIF_TXRATE_MAX; i++) {
+	for (i = 0; i < STC_TXCLK_SRC_MAX; i++) {
 		ret = clk_prepare_enable(spdif_priv->txclk[i]);
 		if (ret)
 			goto disable_spba_clk;
 	}
 
-	ret = clk_prepare_enable(spdif_priv->rxclk);
-	if (ret)
-		goto disable_tx_clk;
-
 	regcache_cache_only(spdif_priv->regmap, false);
 	regcache_mark_dirty(spdif_priv->regmap);
 
@@ -1473,12 +1476,10 @@ static int fsl_spdif_runtime_resume(struct device *dev)
 
 	ret = regcache_sync(spdif_priv->regmap);
 	if (ret)
-		goto disable_rx_clk;
+		goto disable_tx_clk;
 
 	return 0;
 
-disable_rx_clk:
-	clk_disable_unprepare(spdif_priv->rxclk);
 disable_tx_clk:
 disable_spba_clk:
 	for (i--; i >= 0; i--)
@@ -1500,9 +1501,7 @@ static int fsl_spdif_runtime_suspend(struct device *dev)
 			&spdif_priv->regcache_srpc);
 	regcache_cache_only(spdif_priv->regmap, true);
 
-	clk_disable_unprepare(spdif_priv->rxclk);
-
-	for (i = 0; i < SPDIF_TXRATE_MAX; i++)
+	for (i = 0; i < STC_TXCLK_SRC_MAX; i++)
 		clk_disable_unprepare(spdif_priv->txclk[i]);
 
 	if (!IS_ERR(spdif_priv->spbaclk))