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| author |   Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-08-31 10:36:37 -0700 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-09-10 11:25:10 +0800 |
| commit | f59c8f9fe689790248ae7aa7426579982050638c (patch) | |
| tree | 8913b43ef7c4799323cc0d14fc1447da5ca2e052 /include/linux/regulator/machine.h | |
| parent | Linux 3.6-rc4 (diff) | |
| download | linux-dev-f59c8f9fe689790248ae7aa7426579982050638c.tar.xz linux-dev-f59c8f9fe689790248ae7aa7426579982050638c.zip | |
regulator: core: Support bypass mode
Many regulators support a bypass mode where they simply switch their
input supply to the output. This is mainly used in low power retention
states where power consumption is extremely low so higher voltage or
less clean supplies can be used.
Support this by providing ops for the drivers and a consumer API which
allows the device to be put into bypass mode if all consumers enable it
and the machine enables permission for this.
This is not supported as a mode since the existing modes are rarely used
due to fuzzy definition and mostly redundant with modern hardware which is
able to respond promptly to load changes.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Reviewed-by: Graeme Gregory <gg@slimlogic.co.uk>
Diffstat (limited to 'include/linux/regulator/machine.h')
| -rw-r--r-- | include/linux/regulator/machine.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h index 40dd0a394cfa..36adbc82de6a 100644 --- a/include/linux/regulator/machine.h +++ b/include/linux/regulator/machine.h @@ -32,6 +32,7 @@ struct regulator; * board/machine. * STATUS: Regulator can be enabled and disabled. * DRMS: Dynamic Regulator Mode Switching is enabled for this regulator. + * BYPASS: Regulator can be put into bypass mode */ #define REGULATOR_CHANGE_VOLTAGE 0x1 @@ -39,6 +40,7 @@ struct regulator; #define REGULATOR_CHANGE_MODE 0x4 #define REGULATOR_CHANGE_STATUS 0x8 #define REGULATOR_CHANGE_DRMS 0x10 +#define REGULATOR_CHANGE_BYPASS 0x20 /** * struct regulator_state - regulator state during low power system states |