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Commit 10a218a6 authored by David Collins's avatar David Collins Committed by Gerrit - the friendly Code Review server
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regulator: add notifier event for regulator enable 



Add a notifier event which is triggered when a regulator is
enabled.  This can be used by a driver which must configure the
hardware state whenever a given supply is enabled even if some
other consumer was responsible for enabling the supply.

Change-Id: Ic8363308b64953451dd01756e1bfdc2a64527096
Signed-off-by: default avatarDavid Collins <collinsd@codeaurora.org>
parent 781d2db4

drivers/regulator/core.c

+2 −0
Original line number Diff line number Diff line
@@ -2163,6 +2163,8 @@ static int _regulator_enable(struct regulator_dev *rdev) 
			if (ret < 0)

				return ret;



			_notifier_call_chain(rdev, REGULATOR_EVENT_ENABLE,

						NULL);

		} else if (ret < 0) {

			rdev_err(rdev, "is_enabled() failed: %d\n", ret);

			return ret;

include/linux/regulator/consumer.h

+2 −0
Original line number Diff line number Diff line
@@ -103,6 +103,7 @@ struct regmap; 
 *                      Data passed is old voltage cast to (void *).

 * PRE_DISABLE    Regulator is about to be disabled

 * ABORT_DISABLE  Regulator disable failed for some reason

 * ENABLE         Regulator was enabled.

 *

 * NOTE: These events can be OR'ed together when passed into handler.

 */
@@ -119,6 +120,7 @@ struct regmap; 
#define REGULATOR_EVENT_ABORT_VOLTAGE_CHANGE	0x200

#define REGULATOR_EVENT_PRE_DISABLE		0x400

#define REGULATOR_EVENT_ABORT_DISABLE		0x800

#define REGULATOR_EVENT_ENABLE			0x1000



/**

 * struct pre_voltage_change_data - Data sent with PRE_VOLTAGE_CHANGE event