From: Olivier Moysan olivier.moysan@st.com
commit 1ac2bd16448997d9ec01922423486e1e85535eda upstream.
DMA configuration is not balanced on start/stop. Move DMA configuration to trigger callback.
Signed-off-by: Olivier Moysan olivier.moysan@st.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Mathieu Poirier mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- sound/soc/stm/stm32_i2s.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-)
--- a/sound/soc/stm/stm32_i2s.c +++ b/sound/soc/stm/stm32_i2s.c @@ -488,7 +488,7 @@ static int stm32_i2s_configure(struct sn { struct stm32_i2s_data *i2s = snd_soc_dai_get_drvdata(cpu_dai); int format = params_width(params); - u32 cfgr, cfgr_mask, cfg1, cfg1_mask; + u32 cfgr, cfgr_mask, cfg1; unsigned int fthlv; int ret;
@@ -529,15 +529,11 @@ static int stm32_i2s_configure(struct sn if (ret < 0) return ret;
- cfg1 = I2S_CFG1_RXDMAEN | I2S_CFG1_TXDMAEN; - cfg1_mask = cfg1; - fthlv = STM32_I2S_FIFO_SIZE * I2S_FIFO_TH_ONE_QUARTER / 4; - cfg1 |= I2S_CFG1_FTHVL_SET(fthlv - 1); - cfg1_mask |= I2S_CFG1_FTHVL_MASK; + cfg1 = I2S_CFG1_FTHVL_SET(fthlv - 1);
return regmap_update_bits(i2s->regmap, STM32_I2S_CFG1_REG, - cfg1_mask, cfg1); + I2S_CFG1_FTHVL_MASK, cfg1); }
static int stm32_i2s_startup(struct snd_pcm_substream *substream, @@ -589,6 +585,10 @@ static int stm32_i2s_trigger(struct snd_ /* Enable i2s */ dev_dbg(cpu_dai->dev, "start I2S\n");
+ cfg1_mask = I2S_CFG1_RXDMAEN | I2S_CFG1_TXDMAEN; + regmap_update_bits(i2s->regmap, STM32_I2S_CFG1_REG, + cfg1_mask, cfg1_mask); + ret = regmap_update_bits(i2s->regmap, STM32_I2S_CR1_REG, I2S_CR1_SPE, I2S_CR1_SPE); if (ret < 0) {