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ASoC: stm32: i2s: fix registers declaration in regmap 

- Declare SR as volatile, as it is changed by hardware.
- Remove TXDR from readable and volatile register list,
as it is intended for write accesses only.

Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Olivier Moysan 2019-03-11 16:39:28 +01:00 committed by Mark Brown
parent 844a4a362d
commit a39fe6e206
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GPG Key ID: 24D68B725D5487D0
1 changed files with 1 additions and 2 deletions
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3
sound/soc/stm/stm32_i2s.c
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@ -281,7 +281,6 @@ static bool stm32_i2s_readable_reg(struct device *dev, unsigned int reg)
case STM32_I2S_CFG2_REG: case STM32_I2S_CFG2_REG:
case STM32_I2S_IER_REG: case STM32_I2S_IER_REG:
case STM32_I2S_SR_REG: case STM32_I2S_SR_REG:
case STM32_I2S_TXDR_REG:
case STM32_I2S_RXDR_REG: case STM32_I2S_RXDR_REG:
case STM32_I2S_CGFR_REG: case STM32_I2S_CGFR_REG:
return true; return true;
@ -293,7 +292,7 @@ static bool stm32_i2s_readable_reg(struct device *dev, unsigned int reg)
static bool stm32_i2s_volatile_reg(struct device *dev, unsigned int reg) static bool stm32_i2s_volatile_reg(struct device *dev, unsigned int reg)
{ {
switch (reg) { switch (reg) {
case STM32_I2S_TXDR_REG: case STM32_I2S_SR_REG:
case STM32_I2S_RXDR_REG: case STM32_I2S_RXDR_REG:
return true; return true;
default: default: