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regulator: core: Introduce set_load op

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Expose the requested load directly to the regulator implementation for
hardware that does not support the normal enum based set_mode().

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Bjorn Andersson 2015-02-11 19:39:12 -08:00 committed by Mark Brown
parent c517d838eb
commit 8f4490e096
2 changed files with 27 additions and 15 deletions
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39
drivers/regulator/core.c
View file

@ -648,10 +648,12 @@ static int drms_uA_update(struct regulator_dev *rdev)
if (err < 0)
return 0;
if (!rdev->desc->ops->get_optimum_mode)
if (!rdev->desc->ops->get_optimum_mode &&
!rdev->desc->ops->set_load)
return 0;
if (!rdev->desc->ops->set_mode)
if (!rdev->desc->ops->set_mode &&
!rdev->desc->ops->set_load)
return -EINVAL;
/* get output voltage */
@ -676,22 +678,29 @@ static int drms_uA_update(struct regulator_dev *rdev)
list_for_each_entry(sibling, &rdev->consumer_list, list)
current_uA += sibling->uA_load;
/* now get the optimum mode for our new total regulator load */
mode = rdev->desc->ops->get_optimum_mode(rdev, input_uV,
output_uV, current_uA);
if (rdev->desc->ops->set_load) {
/* set the optimum mode for our new total regulator load */
err = rdev->desc->ops->set_load(rdev, current_uA);
if (err < 0)
rdev_err(rdev, "failed to set load %d\n", current_uA);
} else {
/* now get the optimum mode for our new total regulator load */
mode = rdev->desc->ops->get_optimum_mode(rdev, input_uV,
output_uV, current_uA);
/* check the new mode is allowed */
err = regulator_mode_constrain(rdev, &mode);
if (err < 0) {
rdev_err(rdev, "failed to get optimum mode @ %d uA %d -> %d uV\n",
current_uA, input_uV, output_uV);
return err;
/* check the new mode is allowed */
err = regulator_mode_constrain(rdev, &mode);
if (err < 0) {
rdev_err(rdev, "failed to get optimum mode @ %d uA %d -> %d uV\n",
current_uA, input_uV, output_uV);
return err;
}
err = rdev->desc->ops->set_mode(rdev, mode);
if (err < 0)
rdev_err(rdev, "failed to set optimum mode %x\n", mode);
}
err = rdev->desc->ops->set_mode(rdev, mode);
if (err < 0)
rdev_err(rdev, "failed to set optimum mode %x\n", mode);
return err;
}

3
include/linux/regulator/driver.h
View file

@ -98,6 +98,7 @@ struct regulator_linear_range {
* REGULATOR_STATUS value (or negative errno)
* @get_optimum_mode: Get the most efficient operating mode for the regulator
* when running with the specified parameters.
* @set_load: Set the load for the regulator.
*
* @set_bypass: Set the regulator in bypass mode.
* @get_bypass: Get the regulator bypass mode state.
@ -167,6 +168,8 @@ struct regulator_ops {
/* get most efficient regulator operating mode for load */
unsigned int (*get_optimum_mode) (struct regulator_dev *, int input_uV,
int output_uV, int load_uA);
/* set the load on the regulator */
int (*set_load)(struct regulator_dev *, int load_uA);
/* control and report on bypass mode */
int (*set_bypass)(struct regulator_dev *dev, bool enable);