diff options
Diffstat (limited to 'sound/soc/fsl/fsl_ssi.c')
| -rw-r--r-- | sound/soc/fsl/fsl_ssi.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index e3abad5f980a..40dfd8a36484 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: @@ -156,6 +157,21 @@ static bool fsl_ssi_volatile_reg(struct device *dev, unsigned int reg) } } +static bool fsl_ssi_precious_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case CCSR_SSI_SRX0: + case CCSR_SSI_SRX1: + case CCSR_SSI_SISR: + case CCSR_SSI_SACADD: + case CCSR_SSI_SACDAT: + case CCSR_SSI_SATAG: + return true; + default: + return false; + } +} + static bool fsl_ssi_writeable_reg(struct device *dev, unsigned int reg) { switch (reg) { @@ -178,6 +194,7 @@ static const struct regmap_config fsl_ssi_regconfig = { .num_reg_defaults = ARRAY_SIZE(fsl_ssi_reg_defaults), .readable_reg = fsl_ssi_readable_reg, .volatile_reg = fsl_ssi_volatile_reg, + .precious_reg = fsl_ssi_precious_reg, .writeable_reg = fsl_ssi_writeable_reg, .cache_type = REGCACHE_RBTREE, }; @@ -239,8 +256,9 @@ 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 +1605,8 @@ 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 +1625,8 @@ 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); } |