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authorMyungJoo Ham <myungjoo.ham@samsung.com>2011-03-10 20:13:59 -0500
committerLiam Girdwood <lrg@slimlogic.co.uk>2011-03-26 10:15:04 -0400
commit7a32b589a9c856493bccb02db55047edc04eee7b (patch)
treea47d83f3d1320de5a18c513072c17cdc070d2bbf /include/linux
parentfb7c18cac8608983168a7f4f55193cea190c83c8 (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>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/regulator/machine.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h
index 761c745b9c24..c4c4fc45f856 100644
--- a/include/linux/regulator/machine.h
+++ b/include/linux/regulator/machine.h
@@ -186,6 +186,7 @@ struct regulator_init_data {
186}; 186};
187 187
188int regulator_suspend_prepare(suspend_state_t state); 188int regulator_suspend_prepare(suspend_state_t state);
189int regulator_suspend_finish(void);
189 190
190#ifdef CONFIG_REGULATOR 191#ifdef CONFIG_REGULATOR
191void regulator_has_full_constraints(void); 192void regulator_has_full_constraints(void);