From: Marcus Cooper <codekip...@gmail.com>
Bypass the regmap cache when flushing the i2s FIFOs and modify the tables
to reflect this.
Signed-off-by: Marcus Cooper <codekip...@gmail.com>
---
sound/soc/sunxi/sun4i-i2s.c | 29 +++++++++--------------------
1 file changed, 9 insertions(+), 20 deletions(-)
diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index 351b8021173b..92828a84902d 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -595,9 +595,11 @@ static int sun4i_i2s_set_fmt(struct snd_soc_dai *dai,
unsigned int fmt)
static void sun4i_i2s_start_capture(struct sun4i_i2s *i2s)
{
/* Flush RX FIFO */
+ regcache_cache_bypass(i2s->regmap, true);
regmap_update_bits(i2s->regmap, SUN4I_I2S_FIFO_CTRL_REG,
SUN4I_I2S_FIFO_CTRL_FLUSH_RX,
SUN4I_I2S_FIFO_CTRL_FLUSH_RX);
+ regcache_cache_bypass(i2s->regmap, false);
/* Clear RX counter */
regmap_write(i2s->regmap, SUN4I_I2S_RX_CNT_REG, 0);
@@ -616,9 +618,11 @@ static void sun4i_i2s_start_capture(struct sun4i_i2s *i2s)
static void sun4i_i2s_start_playback(struct sun4i_i2s *i2s)
{
/* Flush TX FIFO */
+ regcache_cache_bypass(i2s->regmap, true);
regmap_update_bits(i2s->regmap, SUN4I_I2S_FIFO_CTRL_REG,
SUN4I_I2S_FIFO_CTRL_FLUSH_TX,
SUN4I_I2S_FIFO_CTRL_FLUSH_TX);
+ regcache_cache_bypass(i2s->regmap, false);
/* Clear TX counter */
regmap_write(i2s->regmap, SUN4I_I2S_TX_CNT_REG, 0);
@@ -771,13 +775,7 @@ static const struct snd_soc_component_driver
sun4i_i2s_component = {
static bool sun4i_i2s_rd_reg(struct device *dev, unsigned int reg)
{
- switch (reg) {
- case SUN4I_I2S_FIFO_TX_REG:
- return false;
-
- default:
- return true;
- }
+ return true;
}
static bool sun4i_i2s_wr_reg(struct device *dev, unsigned int reg)
@@ -796,6 +794,8 @@ static bool sun4i_i2s_volatile_reg(struct device *dev,
unsigned int reg)
{
switch (reg) {
case SUN4I_I2S_FIFO_RX_REG:
+ case SUN4I_I2S_FIFO_TX_REG:
+ case SUN4I_I2S_FIFO_STA_REG:
case SUN4I_I2S_INT_STA_REG:
case SUN4I_I2S_RX_CNT_REG:
case SUN4I_I2S_TX_CNT_REG:
@@ -806,23 +806,12 @@ static bool sun4i_i2s_volatile_reg(struct device *dev,
unsigned int reg)
}
}
-static bool sun8i_i2s_rd_reg(struct device *dev, unsigned int reg)
-{
- switch (reg) {
- case SUN8I_I2S_FIFO_TX_REG:
- return false;
-
- default:
- return true;
- }
-}
-
static bool sun8i_i2s_volatile_reg(struct device *dev, unsigned int reg)
{
if (reg == SUN8I_I2S_INT_STA_REG)
return true;
if (reg == SUN8I_I2S_FIFO_TX_REG)
- return false;
+ return true;
return sun4i_i2s_volatile_reg(dev, reg);
}
@@ -877,7 +866,7 @@ static const struct regmap_config sun8i_i2s_regmap_config =
{
.reg_defaults = sun8i_i2s_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(sun8i_i2s_reg_defaults),
.writeable_reg = sun4i_i2s_wr_reg,
- .readable_reg = sun8i_i2s_rd_reg,
+ .readable_reg = sun4i_i2s_rd_reg,
.volatile_reg = sun8i_i2s_volatile_reg,
};
--
2.21.0
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