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regulator: add set_voltage_time_sel infrastructure

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This makes it possible to set the stabilization time for voltage
regulators in the same manner as enable_time(). The interface
only supports regulators that implements fixed selectors.

Cc: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Linus Walleij 2011-03-17 13:24:36 +01:00 • committed by Liam Girdwood
parent 79568b9412
commit 77af1b2641
2 changed files with 34 additions and 2 deletions
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11
include/linux/regulator/driver.h
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@ -63,7 +63,11 @@ enum regulator_status {
* when running with the specified parameters.
*
* @enable_time: Time taken for the regulator voltage output voltage to
* stabalise after being enabled, in microseconds.
* stabilise after being enabled, in microseconds.
* @set_voltage_time_sel: Time taken for the regulator voltage output voltage
* to stabilise after being set to a new value, in microseconds.
* The function provides the from and to voltage selector, the
* function should return the worst case.
*
* @set_suspend_voltage: Set the voltage for the regulator when the system
* is suspended.
@ -103,8 +107,11 @@ struct regulator_ops {
int (*set_mode) (struct regulator_dev *, unsigned int mode);
unsigned int (*get_mode) (struct regulator_dev *);
/* Time taken to enable the regulator */
/* Time taken to enable or set voltage on the regulator */
int (*enable_time) (struct regulator_dev *);
int (*set_voltage_time_sel) (struct regulator_dev *,
unsigned int old_selector,
unsigned int new_selector);
/* report regulator status ... most other accessors report
* control inputs, this reports results of combining inputs