From a7a453f56a1a116027f84ac53b365eb045a0e279 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Tue, 28 Mar 2017 15:14:40 +0100 Subject: [PATCH] regulator: helpers: Add regmap set_soft_start helper Add a helper function regulator_set_soft_start_regmap to allow regmap based regulators to easily enable soft start. Signed-off-by: Charles Keepax Signed-off-by: Mark Brown --- drivers/regulator/helpers.c | 18 ++++++++++++++++++ include/linux/regulator/driver.h | 8 ++++++++ 2 files changed, 26 insertions(+) diff --git a/drivers/regulator/helpers.c b/drivers/regulator/helpers.c index 379cdacc05d8..a75e7da49af8 100644 --- a/drivers/regulator/helpers.c +++ b/drivers/regulator/helpers.c @@ -445,6 +445,24 @@ int regulator_set_bypass_regmap(struct regulator_dev *rdev, bool enable) } EXPORT_SYMBOL_GPL(regulator_set_bypass_regmap); +/** + * regulator_set_soft_start_regmap - Default set_soft_start() using regmap + * + * @rdev: device to operate on. + */ +int regulator_set_soft_start_regmap(struct regulator_dev *rdev) +{ + unsigned int val; + + val = rdev->desc->soft_start_val_on; + if (!val) + val = rdev->desc->soft_start_mask; + + return regmap_update_bits(rdev->regmap, rdev->desc->soft_start_reg, + rdev->desc->soft_start_mask, val); +} +EXPORT_SYMBOL_GPL(regulator_set_soft_start_regmap); + /** * regulator_get_bypass_regmap - Default get_bypass() using regmap * diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index dac8e7b16bc6..1054c033e783 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -292,6 +292,10 @@ enum regulator_type { * set_active_discharge * @active_discharge_reg: Register for control when using regmap * set_active_discharge + * @soft_start_reg: Register for control when using regmap set_soft_start + * @soft_start_mask: Mask for control when using regmap set_soft_start + * @soft_start_val_on: Enabling value for control when using regmap + * set_soft_start * * @enable_time: Time taken for initial enable of regulator (in uS). * @off_on_delay: guard time (in uS), before re-enabling a regulator @@ -345,6 +349,9 @@ struct regulator_desc { unsigned int active_discharge_off; unsigned int active_discharge_mask; unsigned int active_discharge_reg; + unsigned int soft_start_reg; + unsigned int soft_start_mask; + unsigned int soft_start_val_on; unsigned int enable_time; @@ -476,6 +483,7 @@ int regulator_set_voltage_time_sel(struct regulator_dev *rdev, unsigned int new_selector); int regulator_set_bypass_regmap(struct regulator_dev *rdev, bool enable); int regulator_get_bypass_regmap(struct regulator_dev *rdev, bool *enable); +int regulator_set_soft_start_regmap(struct regulator_dev *rdev); int regulator_set_active_discharge_regmap(struct regulator_dev *rdev, bool enable);