From: Samuel Holland samuel@sholland.org
Because SUN4I_I2S_FIFO_CTRL_REG is volatile, writes done while the regmap is cache-only are ignored. To work around this, move the configuration to a callback that runs while the ASoC core has a runtime PM reference to the device.
Signed-off-by: Samuel Holland samuel@sholland.org Signed-off-by: Clément Péron peron.clem@gmail.com --- sound/soc/sunxi/sun4i-i2s.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c index 3f9110d70941..9cd6cd1cd284 100644 --- a/sound/soc/sunxi/sun4i-i2s.c +++ b/sound/soc/sunxi/sun4i-i2s.c @@ -586,6 +586,13 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream, return ret; }
+ /* Set significant bits in our FIFOs */ + regmap_update_bits(i2s->regmap, SUN4I_I2S_FIFO_CTRL_REG, + SUN4I_I2S_FIFO_CTRL_TX_MODE_MASK | + SUN4I_I2S_FIFO_CTRL_RX_MODE_MASK, + SUN4I_I2S_FIFO_CTRL_TX_MODE(1) | + SUN4I_I2S_FIFO_CTRL_RX_MODE(1)); + switch (params_physical_width(params)) { case 16: width = DMA_SLAVE_BUSWIDTH_2_BYTES; @@ -914,13 +921,6 @@ static int sun4i_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) return ret; }
- /* Set significant bits in our FIFOs */ - regmap_update_bits(i2s->regmap, SUN4I_I2S_FIFO_CTRL_REG, - SUN4I_I2S_FIFO_CTRL_TX_MODE_MASK | - SUN4I_I2S_FIFO_CTRL_RX_MODE_MASK, - SUN4I_I2S_FIFO_CTRL_TX_MODE(1) | - SUN4I_I2S_FIFO_CTRL_RX_MODE(1)); - i2s->format = fmt;
return 0;