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regulator: core: Add PRE_DISABLE notification

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Add a PRE_DISABLE notification so that consumers can use a
notifier to run any steps required to prepare for the
regulator being switched off. Since the regulator disable
can fail an abort notification is also added.

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Richard Fitzgerald
2014-11-24 14:10:52 +00:00
committed by Mark Brown
parent f114040e3e
commit a1c8a5512b
2 changed files with 20 additions and 0 deletions
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4
include/linux/regulator/consumer.h
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@@ -99,6 +99,8 @@ struct regmap;
* Data passed is "struct pre_voltage_change_data"
* ABORT_VOLTAGE_CHANGE Regulator voltage change failed for some reason.
* Data passed is old voltage cast to (void *).
* PRE_DISABLE Regulator is about to be disabled
* ABORT_DISABLE Regulator disable failed for some reason
*
* NOTE: These events can be OR'ed together when passed into handler.
*/
@@ -113,6 +115,8 @@ struct regmap;
#define REGULATOR_EVENT_DISABLE 0x80
#define REGULATOR_EVENT_PRE_VOLTAGE_CHANGE 0x100
#define REGULATOR_EVENT_ABORT_VOLTAGE_CHANGE 0x200
#define REGULATOR_EVENT_PRE_DISABLE 0x400
#define REGULATOR_EVENT_ABORT_DISABLE 0x800
/**
* struct pre_voltage_change_data - Data sent with PRE_VOLTAGE_CHANGE event