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authorDimitris Papastamos <dp@opensource.wolfsonmicro.com>2013-02-08 12:47:14 +0000
committerMark Brown <broonie@opensource.wolfsonmicro.com>2013-02-11 11:25:32 +0000
commitc2c1ee66016a45477f58f0fd30907b1e959ca76b (patch)
tree77572b80e8012493804fdbcbd8c5f26186de2c9e /drivers/base
parentf3eb83994cb4c172ce5028b5ae7ea08462cc3f1d (diff)
downloadvexpress-lsk-c2c1ee66016a45477f58f0fd30907b1e959ca76b.tar.gz
regmap: debugfs: Add a `max_reg' member in struct regmap_debugfs_off_cache
We are keeping track of the maximum register as well, this will make things easier for us in sharing this code with the code implementing the register ranges functionality. It also simplifies a bit the calculations when looking for the relevant block:offset from within the cache. Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/regmap/internal.h1
-rw-r--r--drivers/base/regmap/regmap-debugfs.c8
2 files changed, 9 insertions, 0 deletions
diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h
index 401d1919635..26b8ffde145 100644
--- a/drivers/base/regmap/internal.h
+++ b/drivers/base/regmap/internal.h
@@ -25,6 +25,7 @@ struct regmap_debugfs_off_cache {
off_t min;
off_t max;
unsigned int base_reg;
+ unsigned int max_reg;
};
struct regmap_format {
diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c
index 0e94fd3c95a..3fade1ceaf1 100644
--- a/drivers/base/regmap/regmap-debugfs.c
+++ b/drivers/base/regmap/regmap-debugfs.c
@@ -81,6 +81,8 @@ static unsigned int regmap_debugfs_get_dump_start(struct regmap *map,
struct regmap_debugfs_off_cache *c = NULL;
loff_t p = 0;
unsigned int i, ret;
+ unsigned int fpos_offset;
+ unsigned int reg_offset;
/*
* If we don't have a cache build one so we don't have to do a
@@ -93,6 +95,9 @@ static unsigned int regmap_debugfs_get_dump_start(struct regmap *map,
regmap_precious(map, i)) {
if (c) {
c->max = p - 1;
+ fpos_offset = c->max - c->min;
+ reg_offset = fpos_offset / map->debugfs_tot_len;
+ c->max_reg = c->base_reg + reg_offset;
list_add_tail(&c->list,
&map->debugfs_off_cache);
c = NULL;
@@ -119,6 +124,9 @@ static unsigned int regmap_debugfs_get_dump_start(struct regmap *map,
/* Close the last entry off if we didn't scan beyond it */
if (c) {
c->max = p - 1;
+ fpos_offset = c->max - c->min;
+ reg_offset = fpos_offset / map->debugfs_tot_len;
+ c->max_reg = c->base_reg + reg_offset;
list_add_tail(&c->list,
&map->debugfs_off_cache);
}