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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2019-11-06 08:11:50 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-11-06 11:22:36 +0100 |
| commit | 3e7e76a81aef908f2e1c11e72e3bb8de8bee8f46 (patch) | |
| tree | 66a12ff982bcd96de73e4c3dbfdf2500fd72a429 /include | |
| parent | e0e52b83307ec037912c5c9e762ce6e1ea3b1740 (diff) | |
| download | barebox-3e7e76a81aef908f2e1c11e72e3bb8de8bee8f46.tar.gz barebox-3e7e76a81aef908f2e1c11e72e3bb8de8bee8f46.tar.xz | |
regulator: import linear voltage range helpers
The incoming stpmic1 regulator driver makes use of these helpers
internally. Thus port them out of Linux v5.3.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/regulator.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/include/regulator.h b/include/regulator.h index 28ae25652a..156acb82f8 100644 --- a/include/regulator.h +++ b/include/regulator.h @@ -32,6 +32,7 @@ struct regulator; * @enable_is_inverted: A flag to indicate set enable_mask bits to disable * when using regulator_enable_regmap and friends APIs. */ + struct regulator_desc { unsigned n_voltages; const struct regulator_ops *ops; @@ -49,6 +50,9 @@ struct regulator_desc { unsigned int enable_val; unsigned int disable_val; bool enable_is_inverted; + + const struct regulator_linear_range *linear_ranges; + int n_linear_ranges; }; struct regulator_dev { @@ -65,8 +69,36 @@ struct regulator_ops { int (*list_voltage) (struct regulator_dev *, unsigned int); int (*set_voltage_sel) (struct regulator_dev *, unsigned int); + int (*map_voltage)(struct regulator_dev *, int min_uV, int max_uV); +}; + +/* + * struct regulator_linear_range - specify linear voltage ranges + * + * Specify a range of voltages for regulator_map_linear_range() and + * regulator_list_linear_range(). + * + * @min_uV: Lowest voltage in range + * @min_sel: Lowest selector for range + * @max_sel: Highest selector for range + * @uV_step: Step size + */ +struct regulator_linear_range { + unsigned int min_uV; + unsigned int min_sel; + unsigned int max_sel; + unsigned int uV_step; }; +/* Initialize struct regulator_linear_range */ +#define REGULATOR_LINEAR_RANGE(_min_uV, _min_sel, _max_sel, _step_uV) \ +{ \ + .min_uV = _min_uV, \ + .min_sel = _min_sel, \ + .max_sel = _max_sel, \ + .uV_step = _step_uV, \ +} + #ifdef CONFIG_OFDEVICE int of_regulator_register(struct regulator_dev *rd, struct device_node *node); #else @@ -93,8 +125,22 @@ int regulator_set_voltage_sel_regmap(struct regulator_dev *, unsigned); int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV); int regulator_map_voltage_linear(struct regulator_dev *rdev, int min_uV, int max_uV); +int regulator_map_voltage_linear_range(struct regulator_dev *rdev, + int min_uV, int max_uV); int regulator_list_voltage_linear(struct regulator_dev *rdev, unsigned int selector); +int regulator_list_voltage_linear_range(struct regulator_dev *rdev, + unsigned int selector); +int regulator_get_voltage_sel_regmap(struct regulator_dev *rdev); +int regulator_map_voltage_iterate(struct regulator_dev *rdev, + int min_uV, int max_uV); + +/* + * Helper functions intended to be used by regulator drivers prior registering + * their regulators. + */ +int regulator_desc_list_voltage_linear_range(const struct regulator_desc *desc, + unsigned int selector); #else static inline struct regulator *regulator_get(struct device_d *dev, const char *id) |