From 97f53d710b9f63cbef1c86ee39d9ecfdda6e674c Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Mon, 14 Apr 2014 10:09:07 +0200 Subject: regulator: s2mps11: Add external GPIO control for S2MPS14 Add support for external control over GPIO for LDO10, LDO11 and LDO12 S2MPS14 regulators. External control can be turned on by writing 0x0 to control register which in case of other regulators is used for disabling them. These LDO10-LDO12 regulators can be disabled only by I2C GPIO or PWREN pin so the patch actually allows proper way of disabling them. Additionally the GPIO control has two benefits: - It is faster than toggling it over I2C bus. - It allows disabling the regulator during suspend to RAM; The AP will enable it during resume. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Mark Brown --- include/linux/mfd/samsung/s2mps14.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux/mfd/samsung/s2mps14.h') diff --git a/include/linux/mfd/samsung/s2mps14.h b/include/linux/mfd/samsung/s2mps14.h index 4b449b8ac548..900cd7a04314 100644 --- a/include/linux/mfd/samsung/s2mps14.h +++ b/include/linux/mfd/samsung/s2mps14.h @@ -148,6 +148,8 @@ enum s2mps14_regulators { #define S2MPS14_ENABLE_SHIFT 6 /* On/Off controlled by PWREN */ #define S2MPS14_ENABLE_SUSPEND (0x01 << S2MPS14_ENABLE_SHIFT) +/* On/Off controlled by LDO10EN or EMMCEN */ +#define S2MPS14_ENABLE_EXT_CONTROL (0x00 << S2MPS14_ENABLE_SHIFT) #define S2MPS14_LDO_N_VOLTAGES (S2MPS14_LDO_VSEL_MASK + 1) #define S2MPS14_BUCK_N_VOLTAGES (S2MPS14_BUCK_VSEL_MASK + 1) -- cgit v1.2.3