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>

diff --git a/sound/soc/stm/stm32_i2s.c b/sound/soc/stm/stm32_i2s.c
index 47c334d..8968458 100644 (file)
--- a/sound/soc/stm/stm32_i2s.c
+++ b/sound/soc/stm/stm32_i2s.c
@@ -281,7 +281,6 @@ 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_TXDR_REG:
        case STM32_I2S_RXDR_REG:
        case STM32_I2S_CGFR_REG:
                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)
 {
        switch (reg) {
-       case STM32_I2S_TXDR_REG:
+       case STM32_I2S_SR_REG:
        case STM32_I2S_RXDR_REG:
                return true;
        default: