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| author | Olivier Moysan <olivier.moysan@st.com> | 2019-02-26 14:51:04 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-02-26 15:36:40 +0000 |
| commit | 8ba3c5215d69c09f5c39783ff3b78347769822ad (patch) | |
| tree | c5e4f2934aa42316a9973a904cd993f17473e8eb /sound | |
| parent | ae3f563a85e96cc8ba68ba2eae36da9bba6e9c4a (diff) | |
| download | linux-8ba3c5215d69c09f5c39783ff3b78347769822ad.tar.gz linux-8ba3c5215d69c09f5c39783ff3b78347769822ad.tar.bz2 linux-8ba3c5215d69c09f5c39783ff3b78347769822ad.zip | |
ASoC: stm32: i2s: fix IRQ clearing
Because of regmap cache, interrupts may not be cleared
as expected.
Declare IFCR register as write only and make writings
to IFCR register unconditional.
Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/stm/stm32_i2s.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/sound/soc/stm/stm32_i2s.c b/sound/soc/stm/stm32_i2s.c index a25919d32187..339cd4715b2e 100644 --- a/sound/soc/stm/stm32_i2s.c +++ b/sound/soc/stm/stm32_i2s.c @@ -247,8 +247,8 @@ static irqreturn_t stm32_i2s_isr(int irq, void *devid) return IRQ_NONE; } - regmap_update_bits(i2s->regmap, STM32_I2S_IFCR_REG, - I2S_IFCR_MASK, flags); + regmap_write_bits(i2s->regmap, STM32_I2S_IFCR_REG, + I2S_IFCR_MASK, flags); if (flags & I2S_SR_OVR) { dev_dbg(&pdev->dev, "Overrun\n"); @@ -277,7 +277,6 @@ static bool stm32_i2s_readable_reg(struct device *dev, unsigned int reg) case STM32_I2S_CFG2_REG: case STM32_I2S_IER_REG: case STM32_I2S_SR_REG: - case STM32_I2S_IFCR_REG: case STM32_I2S_TXDR_REG: case STM32_I2S_RXDR_REG: case STM32_I2S_CGFR_REG: @@ -559,8 +558,8 @@ static int stm32_i2s_startup(struct snd_pcm_substream *substream, i2s->refcount++; spin_unlock(&i2s->lock_fd); - return regmap_update_bits(i2s->regmap, STM32_I2S_IFCR_REG, - I2S_IFCR_MASK, I2S_IFCR_MASK); + return regmap_write_bits(i2s->regmap, STM32_I2S_IFCR_REG, + I2S_IFCR_MASK, I2S_IFCR_MASK); } static int stm32_i2s_hw_params(struct snd_pcm_substream *substream, @@ -611,8 +610,8 @@ static int stm32_i2s_trigger(struct snd_pcm_substream *substream, int cmd, return ret; } - regmap_update_bits(i2s->regmap, STM32_I2S_IFCR_REG, - I2S_IFCR_MASK, I2S_IFCR_MASK); + regmap_write_bits(i2s->regmap, STM32_I2S_IFCR_REG, + I2S_IFCR_MASK, I2S_IFCR_MASK); if (playback_flg) { ier = I2S_IER_UDRIE; |