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 ---
sound/soc/rockchip/rockchip_pdm.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/sound/soc/rockchip/rockchip_pdm.c b/sound/soc/rockchip/rockchip_pdm.c index 955cdc2..e89beeb 100644 --- a/sound/soc/rockchip/rockchip_pdm.c +++ b/sound/soc/rockchip/rockchip_pdm.c @@ -415,6 +415,7 @@ 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: @@ -429,6 +430,17 @@ 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; @@ -451,6 +463,7 @@ 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, };