regmap: Skip precious registers when dumping registers via debugfs
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h
index 78f87f3..a67dc68 100644
--- a/drivers/base/regmap/internal.h
+++ b/drivers/base/regmap/internal.h
@@ -45,6 +45,7 @@
bool (*writeable_reg)(struct device *dev, unsigned int reg);
bool (*readable_reg)(struct device *dev, unsigned int reg);
bool (*volatile_reg)(struct device *dev, unsigned int reg);
+ bool (*precious_reg)(struct device *dev, unsigned int reg);
};
#ifdef CONFIG_DEBUG_FS
diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c
index 2be8bf8..184b618 100644
--- a/drivers/base/regmap/regmap-debugfs.c
+++ b/drivers/base/regmap/regmap-debugfs.c
@@ -56,6 +56,10 @@
!map->readable_reg(map->dev, i))
continue;
+ if (map->precious_reg &&
+ map->precious_reg(map->dev, i))
+ continue;
+
/* If we're in the region the user is trying to read */
if (p >= *ppos) {
/* ...but not beyond it */
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index a3eaef6..d74d306 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -101,6 +101,7 @@
map->writeable_reg = config->writeable_reg;
map->readable_reg = config->readable_reg;
map->volatile_reg = config->volatile_reg;
+ map->precious_reg = config->precious_reg;
switch (config->reg_bits) {
case 4: