diff options
| author | Sugar Zhang <sugar.zhang@rock-chips.com> | 2019-04-04 06:57:08 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-04-04 11:13:50 +0300 |
| commit | b126fc07328749269021ac53173f9afdd6947248 (patch) | |
| tree | 404228912376207a757dcf1979440cf614cebfa2 /sound/soc/rockchip/rockchip_pdm.c | |
| parent | 47fa5773f11c7cc9117d74ea5a18a22502d8f0f3 (diff) | |
| download | linux-b126fc07328749269021ac53173f9afdd6947248.tar.xz | |
ASoC: rockchip: pdm: Mark RXFIFO_DATA as volatile and precious
This patch marks RXFIFO_DATA as precious to avoid being read
outside a call from the driver, such as regmap debugfs
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/rockchip/rockchip_pdm.c')
| -rw-r--r-- | sound/soc/rockchip/rockchip_pdm.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/sound/soc/rockchip/rockchip_pdm.c b/sound/soc/rockchip/rockchip_pdm.c index 068453596470..6c0f242db5ef 100644 --- a/sound/soc/rockchip/rockchip_pdm.c +++ b/sound/soc/rockchip/rockchip_pdm.c @@ -417,6 +417,7 @@ static bool rockchip_pdm_rd_reg(struct device *dev, unsigned int reg) case PDM_INT_CLR: case PDM_INT_ST: case PDM_DATA_VALID: + case PDM_RXFIFO_DATA: case PDM_VERSION: return true; default: @@ -431,6 +432,17 @@ static bool rockchip_pdm_volatile_reg(struct device *dev, unsigned int reg) case PDM_FIFO_CTRL: case PDM_INT_CLR: case PDM_INT_ST: + case PDM_RXFIFO_DATA: + return true; + default: + return false; + } +} + +static bool rockchip_pdm_precious_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case PDM_RXFIFO_DATA: return true; default: return false; @@ -453,6 +465,7 @@ static const struct regmap_config rockchip_pdm_regmap_config = { .writeable_reg = rockchip_pdm_wr_reg, .readable_reg = rockchip_pdm_rd_reg, .volatile_reg = rockchip_pdm_volatile_reg, + .precious_reg = rockchip_pdm_precious_reg, .cache_type = REGCACHE_FLAT, }; |