[PATCH] regulator: core: use regulator name for sysfs

[Shawn Joo <sjoo@nvidia.com>]

regulator is named by numbering on sysfs, e.g. regulator.0, regulator.1
it confuses to find desired regulator before counting the order.
add option for regulator name by use_name_onsysfs.
if it is true and name is not NULL, desc's name will be the name.
e.g. if name in desc is "LDO0", then regulator.LDO0 on sysfs.
otherwise it follows origin.

Signed-off-by: Shawn Joo <sjoo@nvidia.com>
---
 drivers/regulator/core.c         |    7 ++++++-
 include/linux/regulator/driver.h |    1 +
 2 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 2785843..4dde54d 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -3399,7 +3399,12 @@ regulator_register(const struct regulator_desc *regulator_desc,
 	rdev->dev.class = &regulator_class;
 	rdev->dev.of_node = config->of_node;
 	rdev->dev.parent = dev;
-	dev_set_name(&rdev->dev, "regulator.%d",
+	if (regulator_desc->use_name_onsysfs &&
+			regulator_desc->name != NULL)
+		dev_set_name(&rdev->dev, "regulator.%s",
+			regulator_desc->name);
+	else
+		dev_set_name(&rdev->dev, "regulator.%d",
 		     atomic_inc_return(&regulator_no) - 1);
 	ret = device_register(&rdev->dev);
 	if (ret != 0) {
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index d10bb0f..597f8dd 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -224,6 +224,7 @@ struct regulator_desc {
 	unsigned int bypass_mask;
 
 	unsigned int enable_time;
+	bool use_name_onsysfs;
 };
 
 /**
-- 
1.7.0.4