If a register range is named then provide a debugfs file showing the contents of the range separately.
Signed-off-by: Mark Brown <[email protected]> --- drivers/base/regmap/internal.h | 1 + drivers/base/regmap/regmap-debugfs.c | 31 +++++++++++++++++++++++++++++++ drivers/base/regmap/regmap.c | 1 + 3 files changed, 33 insertions(+) diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h index 27e66c3..ac869d2 100644 --- a/drivers/base/regmap/internal.h +++ b/drivers/base/regmap/internal.h @@ -121,6 +121,7 @@ int _regmap_write(struct regmap *map, unsigned int reg, struct regmap_range_node { struct rb_node node; const char *name; + struct regmap *map; unsigned int range_min; unsigned int range_max; diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c index 25b6843..f4b9dd0 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) diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index ce5129d..366b629 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -579,6 +579,7 @@ struct regmap *regmap_init(struct device *dev, goto err_range; } + new->map = map; new->name = range_cfg->name; new->range_min = range_cfg->range_min; new->range_max = range_cfg->range_max; -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
