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| author | Tuomas Tynkkynen <ttynkkynen@nvidia.com> | 2014-07-21 18:38:48 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-07-25 18:43:48 +0100 |
| commit | 04eca28cde52cdf9eb91e127cc358ad79a8ec53b (patch) | |
| tree | cb4507f5e7f2430325312c86332fbe3ce887879b /include/linux/regulator/consumer.h | |
| parent | 7171511eaec5bf23fb06078f59784a3a0626b38f (diff) | |
| download | lwn-04eca28cde52cdf9eb91e127cc358ad79a8ec53b.tar.gz lwn-04eca28cde52cdf9eb91e127cc358ad79a8ec53b.zip | |
regulator: Add helpers for low-level register access
Add helper functions that allow regulator consumers to obtain low-level
details about the regulator hardware, like the voltage selector register
address and such. These details can be useful when configuring hardware
or firmware that want to do low-level access to regulators, with no
involvement from the kernel.
The use-case for Tegra is a voltage-controlled oscillator clocksource
which has control logic to change the supply voltage via I2C to achieve
a desired output clock rate.
Signed-off-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'include/linux/regulator/consumer.h')
| -rw-r--r-- | include/linux/regulator/consumer.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h index a2d9d81038d1..0b1c8d09a6b1 100644 --- a/include/linux/regulator/consumer.h +++ b/include/linux/regulator/consumer.h @@ -37,6 +37,7 @@ struct device; struct notifier_block; +struct regmap; /* * Regulator operating modes. @@ -215,6 +216,13 @@ int regulator_set_optimum_mode(struct regulator *regulator, int load_uA); int regulator_allow_bypass(struct regulator *regulator, bool allow); +struct regmap *regulator_get_regmap(struct regulator *regulator); +int regulator_get_hardware_vsel_register(struct regulator *regulator, + unsigned *vsel_reg, + unsigned *vsel_mask); +int regulator_list_hardware_vsel(struct regulator *regulator, + unsigned selector); + /* regulator notifier block */ int regulator_register_notifier(struct regulator *regulator, struct notifier_block *nb); @@ -452,6 +460,24 @@ static inline int regulator_allow_bypass(struct regulator *regulator, return 0; } +struct regmap *regulator_get_regmap(struct regulator *regulator) +{ + return ERR_PTR(-EOPNOTSUPP); +} + +int regulator_get_hardware_vsel_register(struct regulator *regulator, + unsigned *vsel_reg, + unsigned *vsel_mask) +{ + return -EOPNOTSUPP; +} + +int regulator_list_hardware_vsel(struct regulator *regulator, + unsigned selector) +{ + return -EOPNOTSUPP; +} + static inline int regulator_register_notifier(struct regulator *regulator, struct notifier_block *nb) { |