diff options
author | Paul Walmsley <pwalmsley@nvidia.com> | 2013-06-07 04:06:56 -0400 |
---|---|---|
committer | Mark Brown <broonie@linaro.org> | 2013-06-07 06:19:29 -0400 |
commit | 2a668a8bc2cbe7a464ab1212475a3efb23a94b1e (patch) | |
tree | 74419d34e14f6307468a659e63072426d65b592e /drivers/regulator/core.c | |
parent | d683b96b072dc4680fc74964eca77e6a23d1fa6e (diff) |
regulator: core: add regulator_get_linear_step()
Add regulator_get_linear_step(), which returns the voltage step size
between VSEL values for linear regulators. This is intended for use
by regulator consumers which build their own voltage-to-VSEL tables.
Signed-off-by: Paul Walmsley <pwalmsley@nvidia.com>
Reviewed-by: Andrew Chew <achew@nvidia.com>
Cc: Matthew Longnecker <mlongnecker@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/regulator/core.c')
-rw-r--r-- | drivers/regulator/core.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 6e5017841582..f07d7adefdda 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c | |||
@@ -2135,6 +2135,21 @@ int regulator_list_voltage(struct regulator *regulator, unsigned selector) | |||
2135 | EXPORT_SYMBOL_GPL(regulator_list_voltage); | 2135 | EXPORT_SYMBOL_GPL(regulator_list_voltage); |
2136 | 2136 | ||
2137 | /** | 2137 | /** |
2138 | * regulator_get_linear_step - return the voltage step size between VSEL values | ||
2139 | * @regulator: regulator source | ||
2140 | * | ||
2141 | * Returns the voltage step size between VSEL values for linear | ||
2142 | * regulators, or return 0 if the regulator isn't a linear regulator. | ||
2143 | */ | ||
2144 | unsigned int regulator_get_linear_step(struct regulator *regulator) | ||
2145 | { | ||
2146 | struct regulator_dev *rdev = regulator->rdev; | ||
2147 | |||
2148 | return rdev->desc->uV_step; | ||
2149 | } | ||
2150 | EXPORT_SYMBOL_GPL(regulator_get_linear_step); | ||
2151 | |||
2152 | /** | ||
2138 | * regulator_is_supported_voltage - check if a voltage range can be supported | 2153 | * regulator_is_supported_voltage - check if a voltage range can be supported |
2139 | * | 2154 | * |
2140 | * @regulator: Regulator to check. | 2155 | * @regulator: Regulator to check. |