diff options
| author | Stefan Agner <stefan.agner@toradex.com> | 2016-02-24 13:40:59 -0800 |
|---|---|---|
| committer | Stefan Agner <stefan.agner@toradex.com> | 2016-02-25 15:14:10 -0800 |
| commit | 7826cd2effcb6413c0e98c75c5ba29149c61a6ba (patch) | |
| tree | e44ba2124c1bf306416cbf2d4b477176c902258e /sound | |
| parent | 661410c43938c9d74c897d8ad5aab6f95a5b9310 (diff) | |
ASoC: fsl_sai_ac97: mark FIFO register as precious
Mark the RX FIFO register as precious to avoid AC97 to get
asynachrounous (e.g. when reading regmap sysfs debug files).
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/fsl/fsl_sai_ac97.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sound/soc/fsl/fsl_sai_ac97.c b/sound/soc/fsl/fsl_sai_ac97.c index 34fa8b3a4527..23acac2cf45e 100644 --- a/sound/soc/fsl/fsl_sai_ac97.c +++ b/sound/soc/fsl/fsl_sai_ac97.c @@ -544,6 +544,16 @@ static bool fsl_sai_volatile_reg(struct device *dev, unsigned int reg) } +static bool fsl_sai_precious_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case FSL_SAI_RDR: + return true; + default: + return false; + } +} + static bool fsl_sai_writeable_reg(struct device *dev, unsigned int reg) { switch (reg) { @@ -574,6 +584,7 @@ static struct regmap_config fsl_sai_regmap_config = { .val_bits = 32, .max_register = FSL_SAI_RMR, + .precious_reg = fsl_sai_precious_reg, .readable_reg = fsl_sai_readable_reg, .volatile_reg = fsl_sai_volatile_reg, .writeable_reg = fsl_sai_writeable_reg, |