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Commit ea38d13f authored by Axel Lin's avatar Axel Lin Committed by Mark Brown
Browse files

regulator: core: Change the unit of ramp_delay from mV/uS to uV/uS 



This change makes it possible to set ramp_delay with 0.xxx mV/uS without
truncation issue.

Signed-off-by: default avatarAxel Lin <axel.lin@gmail.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 398715ab

Documentation/devicetree/bindings/regulator/regulator.txt

+1 −1
Original line number Diff line number Diff line
@@ -10,7 +10,7 @@ Optional properties: 
- regulator-always-on: boolean, regulator should never be disabled

- regulator-boot-on: bootloader/firmware enabled regulator

- <name>-supply: phandle to the parent supply/regulator node

- regulator-ramp-delay: ramp delay for regulator(in mV/uS)

- regulator-ramp-delay: ramp delay for regulator(in uV/uS)



Example:

drivers/regulator/core.c

+2 −2
Original line number Diff line number Diff line
@@ -2319,11 +2319,11 @@ int regulator_set_voltage_time_sel(struct regulator_dev *rdev, 
	if (rdev->desc->uV_step) {

		return DIV_ROUND_UP(rdev->desc->uV_step *

				    abs(new_selector - old_selector),

				    ramp_delay * 1000);

				    ramp_delay);

	} else if (rdev->desc->volt_table) {

		return DIV_ROUND_UP(abs(rdev->desc->volt_table[new_selector] -

					rdev->desc->volt_table[old_selector]),

				    ramp_delay * 1000);

				    ramp_delay);

	} else {

		rdev_warn(rdev, "Unsupported voltage mapping settings\n");

	}

include/linux/regulator/driver.h

+1 −1
Original line number Diff line number Diff line
@@ -173,7 +173,7 @@ enum regulator_type { 
 *

 * @min_uV: Voltage given by the lowest selector (if linear mapping)

 * @uV_step: Voltage increase with each selector (if linear mapping)

 * @ramp_delay: Time to settle down after voltage change (unit: mV/us)

 * @ramp_delay: Time to settle down after voltage change (unit: uV/us)

 * @volt_table: Voltage mapping table (if table based mapping)

 *

 * @vsel_reg: Register for selector when using regulator_regmap_X_voltage_

include/linux/regulator/machine.h

+1 −1
Original line number Diff line number Diff line
@@ -92,7 +92,7 @@ struct regulator_state { 
 *                 mode.

 * @initial_state: Suspend state to set by default.

 * @initial_mode: Mode to set at startup.

 * @ramp_delay: Time to settle down after voltage change (unit: mV/us)

 * @ramp_delay: Time to settle down after voltage change (unit: uV/us)

 */

struct regulation_constraints {