summaryrefslogtreecommitdiff
path: root/include/linux/regulator
diff options
context:
space:
mode:
authorStephen Boyd <sboyd@codeaurora.org>2015-06-12 03:37:04 +0300
committerMark Brown <broonie@kernel.org>2015-06-12 15:09:43 +0300
commit23c779b9f9161d6568d3b2fca06e70ad182c480c (patch)
tree314598f81db70f24dc8ead5f84c708cb8d5f00ef /include/linux/regulator
parent22a10bca280073f81e9e2d9fed6f90a3bcf00236 (diff)
downloadlinux-23c779b9f9161d6568d3b2fca06e70ad182c480c.tar.xz
regulator: Add pull down support
Some regulators need to be configured to pull down a resistor when the regulator is disabled. Add an op (set_pull_down) and a DT property + constraint to support this. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/linux/regulator')
-rw-r--r--include/linux/regulator/driver.h5
-rw-r--r--include/linux/regulator/machine.h2
2 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index fffa688ac3a7..76144a337ff7 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -121,6 +121,9 @@ struct regulator_linear_range {
* @set_suspend_mode: Set the operating mode for the regulator when the
* system is suspended.
*
+ * @set_pull_down: Configure the regulator to pull down when the regulator
+ * is disabled.
+ *
* This struct describes regulator operations which can be implemented by
* regulator chip drivers.
*/
@@ -187,6 +190,8 @@ struct regulator_ops {
/* set regulator suspend operating mode (defined in consumer.h) */
int (*set_suspend_mode) (struct regulator_dev *, unsigned int mode);
+
+ int (*set_pull_down) (struct regulator_dev *);
};
/*
diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h
index 01526559c8c3..8ffb0619a03c 100644
--- a/include/linux/regulator/machine.h
+++ b/include/linux/regulator/machine.h
@@ -87,6 +87,7 @@ struct regulator_state {
* applied.
* @apply_uV: Apply the voltage constraint when initialising.
* @ramp_disable: Disable ramp delay when initialising or when setting voltage.
+ * @pull_down: Enable pull down when regulator is disabled.
*
* @input_uV: Input voltage for regulator when supplied by another regulator.
*
@@ -141,6 +142,7 @@ struct regulation_constraints {
unsigned boot_on:1; /* bootloader/firmware enabled regulator */
unsigned apply_uV:1; /* apply uV constraint if min == max */
unsigned ramp_disable:1; /* disable ramp delay */
+ unsigned pull_down:1; /* pull down resistor when regulator off */
};
/**