From 2efe1642b73e74604498175de032b8a604868fb7 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 8 Aug 2011 15:41:46 +0900 Subject: [PATCH] regmap: Skip precious registers when dumping registers via debugfs Signed-off-by: Mark Brown --- drivers/base/regmap/internal.h | 1 + drivers/base/regmap/regmap-debugfs.c | 4 ++++ drivers/base/regmap/regmap.c | 1 + 3 files changed, 6 insertions(+) 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 @@ 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 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 @@ 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 */ 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 @@ 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: -- 2.7.4