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path: root/sound/soc/rockchip/rockchip_i2s.c
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Diffstat (limited to 'sound/soc/rockchip/rockchip_i2s.c')
-rw-r--r--sound/soc/rockchip/rockchip_i2s.c160
1 files changed, 129 insertions, 31 deletions
diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index 4ce5d2579387..99a128a666fb 100644
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -13,6 +13,7 @@
#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>
@@ -54,8 +55,40 @@ 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);
@@ -92,38 +125,49 @@ static inline struct rk_i2s_dev *to_info(struct snd_soc_dai *dai)
return snd_soc_dai_get_drvdata(dai);
}
-static void rockchip_snd_txctrl(struct rk_i2s_dev *i2s, int on)
+static int 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) {
- regmap_update_bits(i2s->regmap, I2S_DMACR,
- I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_ENABLE);
+ 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_XFER,
- I2S_XFER_TXS_START | I2S_XFER_RXS_START,
- I2S_XFER_TXS_START | I2S_XFER_RXS_START);
+ 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;
i2s->tx_start = true;
} else {
i2s->tx_start = false;
- regmap_update_bits(i2s->regmap, I2S_DMACR,
- I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_DISABLE);
+ ret = regmap_update_bits(i2s->regmap, I2S_DMACR,
+ I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_DISABLE);
+ if (ret < 0)
+ goto end;
if (!i2s->rx_start) {
- regmap_update_bits(i2s->regmap, I2S_XFER,
- I2S_XFER_TXS_START |
- I2S_XFER_RXS_START,
- I2S_XFER_TXS_STOP |
- I2S_XFER_RXS_STOP);
+ 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;
udelay(150);
- regmap_update_bits(i2s->regmap, I2S_CLR,
- I2S_CLR_TXC | I2S_CLR_RXC,
- I2S_CLR_TXC | I2S_CLR_RXC);
+ 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_read(i2s->regmap, I2S_CLR, &val);
@@ -138,44 +182,57 @@ static void 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 void rockchip_snd_rxctrl(struct rk_i2s_dev *i2s, int on)
+static int 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) {
- regmap_update_bits(i2s->regmap, I2S_DMACR,
+ ret = regmap_update_bits(i2s->regmap, I2S_DMACR,
I2S_DMACR_RDE_ENABLE, I2S_DMACR_RDE_ENABLE);
+ if (ret < 0)
+ goto end;
- regmap_update_bits(i2s->regmap, I2S_XFER,
+ 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;
i2s->rx_start = true;
} else {
i2s->rx_start = false;
- regmap_update_bits(i2s->regmap, I2S_DMACR,
+ ret = regmap_update_bits(i2s->regmap, I2S_DMACR,
I2S_DMACR_RDE_ENABLE, I2S_DMACR_RDE_DISABLE);
+ if (ret < 0)
+ goto end;
if (!i2s->tx_start) {
- regmap_update_bits(i2s->regmap, I2S_XFER,
+ 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;
udelay(150);
- regmap_update_bits(i2s->regmap, I2S_CLR,
+ 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_read(i2s->regmap, I2S_CLR, &val);
-
/* Should wait for clear operation to finish */
while (val) {
regmap_read(i2s->regmap, I2S_CLR, &val);
@@ -187,7 +244,12 @@ static void 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,
@@ -425,17 +487,26 @@ 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)
- rockchip_snd_rxctrl(i2s, 1);
+ ret = rockchip_snd_rxctrl(i2s, 1);
else
- rockchip_snd_txctrl(i2s, 1);
+ 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);
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
- if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
- rockchip_snd_rxctrl(i2s, 0);
- else
- rockchip_snd_txctrl(i2s, 0);
+ 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);
+ }
break;
default:
ret = -EINVAL;
@@ -736,6 +807,33 @@ 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);
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-22 00:49:15 +0300