regulator: Add initial per-regulator debugfs support

We only expose the use and open counts to userspace, providing a tiny
bit of insight into what the API is up to.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

1 files changed, 6 insertions, 2 deletions

diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index 975ae06cb634..b8ed16a33c47 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -175,9 +175,9 @@ struct regulator_desc {
  */
 struct regulator_dev {
         struct regulator_desc *desc;
-        int use_count;
-        int open_count;
         int exclusive;
+        u32 use_count;
+        u32 open_count;
 
         /* lists we belong to */
         struct list_head list; /* list of all regulators */
@@ -195,6 +195,10 @@ struct regulator_dev {
         struct regulator_dev *supply;   /* for tree */
 
         void *reg_data;         /* regulator_dev data */
+
+#ifdef CONFIG_DEBUG_FS
+        struct dentry *debugfs;
+#endif
 };
 
 struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,