[RFT][PATCH 1/3] regulator: core: Add enable_is_inverted flag to indicate set enable_mask bits to disable

Axel Lin
2013-02-16T06:36:27Z

Add enable_is_inverted flag to indicate set enable_mask bits to disable
when using regulator_enable_regmap and friends APIs.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
drivers/regulator/core.c | 24 ++++++++++++++++++++----
include/linux/regulator/driver.h | 3 +++
2 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index da9782b..142205b 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1794,7 +1794,10 @@ int regulator_is_enabled_regmap(struct regulator_dev *rdev)
if (ret != 0)
return ret;

- return (val & rdev->desc->enable_mask) != 0;
+ if (rdev->desc->enable_is_inverted)
+ return (val & rdev->desc->enable_mask) == 0;
+ else
+ return (val & rdev->desc->enable_mask) != 0;
}
EXPORT_SYMBOL_GPL(regulator_is_enabled_regmap);

@@ -1809,9 +1812,15 @@ EXPORT_SYMBOL_GPL(regulator_is_enabled_regmap);
*/
int regulator_enable_regmap(struct regulator_dev *rdev)
{
+ unsigned int val;
+
+ if (rdev->desc->enable_is_inverted)
+ val = 0;
+ else
+ val = rdev->desc->enable_mask;
+
return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
- rdev->desc->enable_mask,
- rdev->desc->enable_mask);
+ rdev->desc->enable_mask, val);
}
EXPORT_SYMBOL_GPL(regulator_enable_regmap);

@@ -1826,8 +1835,15 @@ EXPORT_SYMBOL_GPL(regulator_enable_regmap);
*/
int regulator_disable_regmap(struct regulator_dev *rdev)
{
+ unsigned int val;
+
+ if (rdev->desc->enable_is_inverted)
+ val = rdev->desc->enable_mask;
+ else
+ val = 0;
+
return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
- rdev->desc->enable_mask, 0);
+ rdev->desc->enable_mask, val);
}
EXPORT_SYMBOL_GPL(regulator_disable_regmap);

diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index 23070fd..074b57e 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -199,6 +199,8 @@ enum regulator_type {
* output when using regulator_set_voltage_sel_regmap
* @enable_reg: Register for control when using regmap enable/disable ops
* @enable_mask: Mask for control when using regmap enable/disable ops
+ * @enable_is_inverted: A flag to indicate set enable_mask bits to disable
+ * when using regulator_enable_regmap and friends APIs.
*
* @enable_time: Time taken for initial enable of regulator (in uS).
*/
@@ -226,6 +228,7 @@ struct regulator_desc {
unsigned int apply_bit;
unsigned int enable_reg;
unsigned int enable_mask;
+ bool enable_is_inverted;
unsigned int bypass_reg;
unsigned int bypass_mask;

--
1.7.9.5