diff options
author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-10-03 13:13:16 +0100 |
---|---|---|
committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-10-15 09:59:59 +0900 |
commit | 4b020b3f9ba2af8031c5c7d759fbafd234d1c390 (patch) | |
tree | 0089993156b75b107585ed7048f4a6ab79ca3315 /drivers/base/regmap/regmap-debugfs.c | |
parent | bd9cc12f4a7e7389432bba0cae6970dfc28f423c (diff) |
regmap: Provide debugfs read of register ranges
If a register range is named then provide a debugfs file showing the
contents of the range separately.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/base/regmap/regmap-debugfs.c')
-rw-r--r-- | drivers/base/regmap/regmap-debugfs.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c index 25b6843d6a41..f4b9dd01c981 100644 --- a/drivers/base/regmap/regmap-debugfs.c +++ b/drivers/base/regmap/regmap-debugfs.c @@ -183,6 +183,22 @@ static const struct file_operations regmap_map_fops = { .llseek = default_llseek, }; +static ssize_t regmap_range_read_file(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct regmap_range_node *range = file->private_data; + struct regmap *map = range->map; + + return regmap_read_debugfs(map, range->range_min, range->range_max, + user_buf, count, ppos); +} + +static const struct file_operations regmap_range_fops = { + .open = simple_open, + .read = regmap_range_read_file, + .llseek = default_llseek, +}; + static ssize_t regmap_access_read_file(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) @@ -253,6 +269,9 @@ static const struct file_operations regmap_access_fops = { void regmap_debugfs_init(struct regmap *map, const char *name) { + struct rb_node *next; + struct regmap_range_node *range_node; + if (name) { map->debugfs_name = kasprintf(GFP_KERNEL, "%s-%s", dev_name(map->dev), name); @@ -285,6 +304,18 @@ void regmap_debugfs_init(struct regmap *map, const char *name) debugfs_create_bool("cache_bypass", 0400, map->debugfs, &map->cache_bypass); } + + next = rb_first(&map->range_tree); + while (next) { + range_node = rb_entry(next, struct regmap_range_node, node); + + if (range_node->name) + debugfs_create_file(range_node->name, 0400, + map->debugfs, range_node, + ®map_range_fops); + + next = rb_next(&range_node->node); + } } void regmap_debugfs_exit(struct regmap *map) |