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Diffstat (limited to 'sound/soc/rockchip/rockchip_i2s.c')
-rw-r--r--sound/soc/rockchip/rockchip_i2s.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index 53e0b4a1c7d2..7e89f5b0c237 100644
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -15,6 +15,7 @@
#include <linux/clk.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
+#include <linux/spinlock.h>
#include <sound/pcm_params.h>
#include <sound/dmaengine_pcm.h>
@@ -53,6 +54,7 @@ struct rk_i2s_dev {
bool is_master_mode;
const struct rk_i2s_pins *pins;
unsigned int bclk_ratio;
+ spinlock_t lock; /* tx/rx lock */
};
static int i2s_runtime_suspend(struct device *dev)
@@ -96,6 +98,7 @@ static void rockchip_snd_txctrl(struct rk_i2s_dev *i2s, int on)
unsigned int val = 0;
int retry = 10;
+ spin_lock(&i2s->lock);
if (on) {
regmap_update_bits(i2s->regmap, I2S_DMACR,
I2S_DMACR_TDE_ENABLE, I2S_DMACR_TDE_ENABLE);
@@ -136,6 +139,7 @@ static void rockchip_snd_txctrl(struct rk_i2s_dev *i2s, int on)
}
}
}
+ spin_unlock(&i2s->lock);
}
static void rockchip_snd_rxctrl(struct rk_i2s_dev *i2s, int on)
@@ -143,6 +147,7 @@ static void rockchip_snd_rxctrl(struct rk_i2s_dev *i2s, int on)
unsigned int val = 0;
int retry = 10;
+ spin_lock(&i2s->lock);
if (on) {
regmap_update_bits(i2s->regmap, I2S_DMACR,
I2S_DMACR_RDE_ENABLE, I2S_DMACR_RDE_ENABLE);
@@ -183,6 +188,7 @@ static void rockchip_snd_rxctrl(struct rk_i2s_dev *i2s, int on)
}
}
}
+ spin_unlock(&i2s->lock);
}
static int rockchip_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
@@ -684,6 +690,7 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
if (!i2s)
return -ENOMEM;
+ spin_lock_init(&i2s->lock);
i2s->dev = &pdev->dev;
i2s->grf = syscon_regmap_lookup_by_phandle(node, "rockchip,grf");