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regmap: Skip precious registers when dumping registers via debugfs

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Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2011-08-08 15:41:46 +09:00
parent 31244e396f
commit 2efe1642b7
3 changed files with 6 additions and 0 deletions
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1
drivers/base/regmap/internal.h
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@ -45,6 +45,7 @@ struct regmap {
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

4
drivers/base/regmap/regmap-debugfs.c
View File

@ -56,6 +56,10 @@ static ssize_t regmap_map_read_file(struct file *file, char __user *user_buf,
!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 */

1
drivers/base/regmap/regmap.c
View File

@ -101,6 +101,7 @@ struct regmap *regmap_init(struct device *dev,
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: