xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

regulator: helpers: Modify helpers enabling multi-bit control

Browse Source 
This patch extends the regulator helpers to account for device that use
multiple bits for control when using regmap enable/disable/bypass ops.

The actual regulator helpers wrongly assume that the regulator control
is always performed using single bits, using in the regulator_desc
struct only two parameters *_reg and *_mask defining register and mask
for control.

This patch extends this struct and introduces the helpers to take into
account devices where control is performed using multiple bits and
specific multi-bit values are used for enabling/disabling/bypassing the
regulator.

Signed-off-by: Carlo Caione <carlo@caione.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Carlo Caione
2014-03-05 22:11:29 +01:00
committed by Mark Brown
parent 38dbfb59d1
commit ca5d1b3524
2 changed files with 40 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

48
drivers/regulator/helpers.c
View File

@@ -37,10 +37,17 @@ int regulator_is_enabled_regmap(struct regulator_dev *rdev)
if (ret != 0)
return ret;
if (rdev->desc->enable_is_inverted)
return (val & rdev->desc->enable_mask) == 0;
else
return (val & rdev->desc->enable_mask) != 0;
val &= rdev->desc->enable_mask;
if (rdev->desc->enable_is_inverted) {
if (rdev->desc->enable_val)
return val != rdev->desc->enable_val;
return val == 0;
} else {
if (rdev->desc->enable_val)
return val == rdev->desc->enable_val;
return val != 0;
}
}
EXPORT_SYMBOL_GPL(regulator_is_enabled_regmap);
@@ -57,10 +64,13 @@ 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;
if (rdev->desc->enable_is_inverted) {
val = rdev->desc->disable_val;
} else {
val = rdev->desc->enable_val;
if (!val)
val = rdev->desc->enable_mask;
}
return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
rdev->desc->enable_mask, val);
@@ -80,10 +90,13 @@ 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;
if (rdev->desc->enable_is_inverted) {
val = rdev->desc->enable_val;
if (!val)
val = rdev->desc->enable_mask;
} else {
val = rdev->desc->disable_val;
}
return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
rdev->desc->enable_mask, val);
@@ -419,10 +432,13 @@ int regulator_set_bypass_regmap(struct regulator_dev *rdev, bool enable)
{
unsigned int val;
if (enable)
val = rdev->desc->bypass_mask;
else
val = 0;
if (enable) {
val = rdev->desc->bypass_val_on;
if (!val)
val = rdev->desc->bypass_mask;
} else {
val = rdev->desc->bypass_val_off;
}
return regmap_update_bits(rdev->regmap, rdev->desc->bypass_reg,
rdev->desc->bypass_mask, val);