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authorSugar Zhang <sugar.zhang@rock-chips.com>2019-04-04 11:57:08 +0800
committerMark Brown <broonie@kernel.org>2019-04-04 15:13:50 +0700
commitb126fc07328749269021ac53173f9afdd6947248 (patch)
tree404228912376207a757dcf1979440cf614cebfa2 /sound/soc/rockchip
parent47fa5773f11c7cc9117d74ea5a18a22502d8f0f3 (diff)
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')
-rw-r--r--sound/soc/rockchip/rockchip_pdm.c13
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,
};