SACNT register should be marked volatile since
its WR and RD bits are cleared by SSI after
completing the relevant operation.
This unbreaks AC'97 register access.
Fixes: 05cf237972fe ("ASoC: fsl_ssi: Add driver suspend and resume to support
MEGA Fast")
Signed-off-by: Maciej S. Szmigiero <[email protected]>
---
sound/soc/fsl/fsl_ssi.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c
index e3abad5f980a..cc22354d7758 100644
--- a/sound/soc/fsl/fsl_ssi.c
+++ b/sound/soc/fsl/fsl_ssi.c
@@ -146,6 +146,7 @@ static bool fsl_ssi_volatile_reg(struct device *dev,
unsigned int reg)
case CCSR_SSI_SRX1:
case CCSR_SSI_SISR:
case CCSR_SSI_SFCSR:
+ case CCSR_SSI_SACNT:
case CCSR_SSI_SACADD:
case CCSR_SSI_SACDAT:
case CCSR_SSI_SATAG:
@@ -239,8 +240,9 @@ struct fsl_ssi_private {
unsigned int baudclk_streams;
unsigned int bitclk_freq;
- /*regcache for SFCSR*/
+ /* regcache for volatile regs */
u32 regcache_sfcsr;
+ u32 regcache_sacnt;
/* DMA params */
struct snd_dmaengine_dai_dma_data dma_params_tx;
@@ -1587,6 +1589,8 @@ static int fsl_ssi_suspend(struct device *dev)
regmap_read(regs, CCSR_SSI_SFCSR,
&ssi_private->regcache_sfcsr);
+ regmap_read(regs, CCSR_SSI_SACNT,
+ &ssi_private->regcache_sacnt);
regcache_cache_only(regs, true);
regcache_mark_dirty(regs);
@@ -1605,6 +1609,8 @@ static int fsl_ssi_resume(struct device *dev)
CCSR_SSI_SFCSR_RFWM1_MASK | CCSR_SSI_SFCSR_TFWM1_MASK |
CCSR_SSI_SFCSR_RFWM0_MASK | CCSR_SSI_SFCSR_TFWM0_MASK,
ssi_private->regcache_sfcsr);
+ regmap_write(regs, CCSR_SSI_SACNT,
+ ssi_private->regcache_sacnt);
return regcache_sync(regs);
}
--
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