diff options
| author | MyungJoo Ham <myungjoo.ham@samsung.com> | 2011-03-11 10:13:59 +0900 |
|---|---|---|
| committer | Niket Sirsi <nsirsi@nvidia.com> | 2011-05-23 16:56:25 -0700 |
| commit | cbb7d2b75535ed5f293bcac5b5ecd6cafa482f1a (patch) | |
| tree | 25200a4c9c6656e33ea74317af24713b930a490d /include/linux | |
| parent | bfcebd948861654d11a02db03e5ac0ccbe641ab8 (diff) | |
Regulator: add suspend-finish API for regulator core.
The regulator core had suspend-prepare that turns off the regulators
when entering a system-wide suspend. However, it did not have
suspend-finish that pairs with suspend-prepare and the regulator core
has assumed that the regulator devices and their drivers support
autonomous recover at resume.
This patch adds regulator_suspend_finish that pairs with the
previously-existed regulator_suspend_prepare. The function
regulator_suspend_finish turns on the regulators that have always_on set
or positive use_count so that we can reset the regulator states
appropriately at resume.
In regulator_suspend_finish, if has_full_constraints, it disables
unnecessary regulators.
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
--
Updates
v3
comments corrected (Thanks to Igor)
v2
disable unnecessary regulators (Thanks to Mark)
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
(cherry picked from commit 7a32b589a9c856493bccb02db55047edc04eee7b)
Reviewed-on: http://git.kernel.org/?p=linux/kernel/git/torvalds/
linux-2.6.git;a=commit;h=7a32b589a9c856493bccb02db55047edc04eee7b
Change-Id: Iaf2e36e9d645c724e2d98e6566aadec5c013212e
Reviewed-on: http://git-master/r/30956
Tested-by: Varun Wadekar <vwadekar@nvidia.com>
Reviewed-by: Scott Williams <scwilliams@nvidia.com>
Reviewed-by: Daniel Willemsen <dwillemsen@nvidia.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/regulator/machine.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h index e2980287245e..07ef3dc3500e 100644 --- a/include/linux/regulator/machine.h +++ b/include/linux/regulator/machine.h @@ -186,6 +186,7 @@ struct regulator_init_data { }; int regulator_suspend_prepare(suspend_state_t state); +int regulator_suspend_finish(void); #ifdef CONFIG_REGULATOR void regulator_has_full_constraints(void); |