Merge tag 'sound-5.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Only undoes the Rockchip BCLK changes to address a regression"

* tag 'sound-5.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ASoC: rockchip-i2s: Undo BCLK pinctrl changes
  ASoC: rockchip: i2s: Fix NULL pointer dereference when pinctrl is not found

1 files changed, 31 insertions, 129 deletions

diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index 99a128a666fbb..4ce5d25793875 100644
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -13,7 +13,6 @@
 #include <linux/of_gpio.h>
 #include <linux/of_device.h>
 #include <linux/clk.h>
-#include <linux/pinctrl/consumer.h>
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 #include <linux/spinlock.h>
@@ -55,40 +54,8 @@ struct rk_i2s_dev {
 	const struct rk_i2s_pins *pins;
 	unsigned int bclk_ratio;
 	spinlock_t lock; /* tx/rx lock */
-	struct pinctrl *pinctrl;
-	struct pinctrl_state *bclk_on;
-	struct pinctrl_state *bclk_off;
 };
 
-static int i2s_pinctrl_select_bclk_on(struct rk_i2s_dev *i2s)
-{
-	int ret = 0;
-
-	if (!IS_ERR(i2s->pinctrl) && !IS_ERR_OR_NULL(i2s->bclk_on))
-		ret = pinctrl_select_state(i2s->pinctrl,
-				     i2s->bclk_on);
-
-	if (ret)
-		dev_err(i2s->dev, "bclk enable failed %d\n", ret);
-
-	return ret;
-}
-
-static int i2s_pinctrl_select_bclk_off(struct rk_i2s_dev *i2s)
-{
-
-	int ret = 0;
-
-	if (!IS_ERR(i2s->pinctrl) && !IS_ERR_OR_NULL(i2s->bclk_off))
-		ret = pinctrl_select_state(i2s->pinctrl,
-				     i2s->bclk_off);
-
-	if (ret)
-		dev_err(i2s->dev, "bclk disable failed %d\n", ret);
-
-	return ret;
-}
-
 static int i2s_runtime_suspend(struct device *dev)
 {
 	struct rk_i2s_dev *i2s = dev_get_drvdata(dev);
@@ -125,49 +92,38 @@ static inline struct rk_i2s_dev *to_info(struct snd_soc_dai *dai)
 	return snd_soc_dai_get_drvdata(dai);
 }
 
-static int rockchip_snd_txctrl(struct rk_i2s_dev *i2s, int on)
+static void rockchip_snd_txctrl(struct rk_i2s_dev *i2s, int on)
 {
 	unsigned int val = 0;
 	int retry = 10;
-	int ret = 0;
 
 	spin_lock(&i2s->lock);
 	if (on) {
-		ret = regmap_update_bits(i2s->regmap, I2S_DMACR,
-				I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_ENABLE);
-		if (ret < 0)
-			goto end;
+		regmap_update_bits(i2s->regmap, I2S_DMACR,
+				   I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_ENABLE);
 
-		ret = regmap_update_bits(i2s->regmap, I2S_XFER,
-				I2S_XFER_TXS_START | I2S_XFER_RXS_START,
-				I2S_XFER_TXS_START | I2S_XFER_RXS_START);
-		if (ret < 0)
-			goto end;
+		regmap_update_bits(i2s->regmap, I2S_XFER,
+				   I2S_XFER_TXS_START | I2S_XFER_RXS_START,
+				   I2S_XFER_TXS_START | I2S_XFER_RXS_START);
 
 		i2s->tx_start = true;
 	} else {
 		i2s->tx_start = false;
 
-		ret = regmap_update_bits(i2s->regmap, I2S_DMACR,
-				I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_DISABLE);
-		if (ret < 0)
-			goto end;
+		regmap_update_bits(i2s->regmap, I2S_DMACR,
+				   I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_DISABLE);
 
 		if (!i2s->rx_start) {
-			ret = regmap_update_bits(i2s->regmap, I2S_XFER,
-					I2S_XFER_TXS_START |
-					I2S_XFER_RXS_START,
-					I2S_XFER_TXS_STOP |
-					I2S_XFER_RXS_STOP);
-			if (ret < 0)
-				goto end;
+			regmap_update_bits(i2s->regmap, I2S_XFER,
+					   I2S_XFER_TXS_START |
+					   I2S_XFER_RXS_START,
+					   I2S_XFER_TXS_STOP |
+					   I2S_XFER_RXS_STOP);
 
 			udelay(150);
-			ret = regmap_update_bits(i2s->regmap, I2S_CLR,
-					I2S_CLR_TXC | I2S_CLR_RXC,
-					I2S_CLR_TXC | I2S_CLR_RXC);
-			if (ret < 0)
-				goto end;
+			regmap_update_bits(i2s->regmap, I2S_CLR,
+					   I2S_CLR_TXC | I2S_CLR_RXC,
+					   I2S_CLR_TXC | I2S_CLR_RXC);
 
 			regmap_read(i2s->regmap, I2S_CLR, &val);
 
@@ -182,57 +138,44 @@ static int rockchip_snd_txctrl(struct rk_i2s_dev *i2s, int on)
 			}
 		}
 	}
-end:
 	spin_unlock(&i2s->lock);
-	if (ret < 0)
-		dev_err(i2s->dev, "lrclk update failed\n");
-
-	return ret;
 }
 
-static int rockchip_snd_rxctrl(struct rk_i2s_dev *i2s, int on)
+static void rockchip_snd_rxctrl(struct rk_i2s_dev *i2s, int on)
 {
 	unsigned int val = 0;
 	int retry = 10;
-	int ret = 0;
 
 	spin_lock(&i2s->lock);
 	if (on) {
-		ret = regmap_update_bits(i2s->regmap, I2S_DMACR,
+		regmap_update_bits(i2s->regmap, I2S_DMACR,
 				   I2S_DMACR_RDE_ENABLE, I2S_DMACR_RDE_ENABLE);
-		if (ret < 0)
-			goto end;
 
-		ret = regmap_update_bits(i2s->regmap, I2S_XFER,
+		regmap_update_bits(i2s->regmap, I2S_XFER,
 				   I2S_XFER_TXS_START | I2S_XFER_RXS_START,
 				   I2S_XFER_TXS_START | I2S_XFER_RXS_START);
-		if (ret < 0)
-			goto end;
 
 		i2s->rx_start = true;
 	} else {
 		i2s->rx_start = false;
 
-		ret = regmap_update_bits(i2s->regmap, I2S_DMACR,
+		regmap_update_bits(i2s->regmap, I2S_DMACR,
 				   I2S_DMACR_RDE_ENABLE, I2S_DMACR_RDE_DISABLE);
-		if (ret < 0)
-			goto end;
 
 		if (!i2s->tx_start) {
-			ret = regmap_update_bits(i2s->regmap, I2S_XFER,
+			regmap_update_bits(i2s->regmap, I2S_XFER,
 					   I2S_XFER_TXS_START |
 					   I2S_XFER_RXS_START,
 					   I2S_XFER_TXS_STOP |
 					   I2S_XFER_RXS_STOP);
-			if (ret < 0)
-				goto end;
+
 			udelay(150);
-			ret = regmap_update_bits(i2s->regmap, I2S_CLR,
+			regmap_update_bits(i2s->regmap, I2S_CLR,
 					   I2S_CLR_TXC | I2S_CLR_RXC,
 					   I2S_CLR_TXC | I2S_CLR_RXC);
-			if (ret < 0)
-				goto end;
+
 			regmap_read(i2s->regmap, I2S_CLR, &val);
+
 			/* Should wait for clear operation to finish */
 			while (val) {
 				regmap_read(i2s->regmap, I2S_CLR, &val);
@@ -244,12 +187,7 @@ static int rockchip_snd_rxctrl(struct rk_i2s_dev *i2s, int on)
 			}
 		}
 	}
-end:
 	spin_unlock(&i2s->lock);
-	if (ret < 0)
-		dev_err(i2s->dev, "lrclk update failed\n");
-
-	return ret;
 }
 
 static int rockchip_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
@@ -487,26 +425,17 @@ static int rockchip_i2s_trigger(struct snd_pcm_substream *substream,
 	case SNDRV_PCM_TRIGGER_RESUME:
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
-			ret = rockchip_snd_rxctrl(i2s, 1);
+			rockchip_snd_rxctrl(i2s, 1);
 		else
-			ret = rockchip_snd_txctrl(i2s, 1);
-		/* Do not turn on bclk if lrclk open fails. */
-		if (ret < 0)
-			return ret;
-		i2s_pinctrl_select_bclk_on(i2s);
+			rockchip_snd_txctrl(i2s, 1);
 		break;
 	case SNDRV_PCM_TRIGGER_SUSPEND:
 	case SNDRV_PCM_TRIGGER_STOP:
 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
-			if (!i2s->tx_start)
-				i2s_pinctrl_select_bclk_off(i2s);
-			ret = rockchip_snd_rxctrl(i2s, 0);
-		} else {
-			if (!i2s->rx_start)
-				i2s_pinctrl_select_bclk_off(i2s);
-			ret = rockchip_snd_txctrl(i2s, 0);
-		}
+		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+			rockchip_snd_rxctrl(i2s, 0);
+		else
+			rockchip_snd_txctrl(i2s, 0);
 		break;
 	default:
 		ret = -EINVAL;
@@ -807,33 +736,6 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
 	}
 
 	i2s->bclk_ratio = 64;
-	i2s->pinctrl = devm_pinctrl_get(&pdev->dev);
-	if (IS_ERR(i2s->pinctrl))
-		dev_err(&pdev->dev, "failed to find i2s pinctrl\n");
-
-	i2s->bclk_on = pinctrl_lookup_state(i2s->pinctrl,
-				   "bclk_on");
-	if (IS_ERR_OR_NULL(i2s->bclk_on))
-		dev_err(&pdev->dev, "failed to find i2s default state\n");
-	else
-		dev_dbg(&pdev->dev, "find i2s bclk state\n");
-
-	i2s->bclk_off = pinctrl_lookup_state(i2s->pinctrl,
-				  "bclk_off");
-	if (IS_ERR_OR_NULL(i2s->bclk_off))
-		dev_err(&pdev->dev, "failed to find i2s gpio state\n");
-	else
-		dev_dbg(&pdev->dev, "find i2s bclk_off state\n");
-
-	i2s_pinctrl_select_bclk_off(i2s);
-
-	i2s->playback_dma_data.addr = res->start + I2S_TXDR;
-	i2s->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
-	i2s->playback_dma_data.maxburst = 4;
-
-	i2s->capture_dma_data.addr = res->start + I2S_RXDR;
-	i2s->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
-	i2s->capture_dma_data.maxburst = 4;
 
 	dev_set_drvdata(&pdev->dev, i2s);