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mfd: sec-core: Prepare regulators for suspend state to reduce power-consumption

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This patch use regulator_suspend_prepare() function to prepare the proper state
of regulators for suspend state to remove un-necessary leakage power-consumption.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Chanwoo Choi 2014-06-25 16:14:47 +09:00 committed by Lee Jones
parent b264fc7002
commit b7cde7078d
2 changed files with 11 additions and 0 deletions
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1
drivers/mfd/Kconfig
View File

@ -587,6 +587,7 @@ config MFD_SEC_CORE
select MFD_CORE
select REGMAP_I2C
select REGMAP_IRQ
select REGULATOR
help
Support for the Samsung Electronics MFD series.
This driver provides common support for accessing the device,

10
drivers/mfd/sec-core.c
View File

@ -31,6 +31,7 @@
#include <linux/mfd/samsung/s2mpu02.h>
#include <linux/mfd/samsung/s5m8763.h>
#include <linux/mfd/samsung/s5m8767.h>
#include <linux/regulator/machine.h>
#include <linux/regmap.h>
static const struct mfd_cell s5m8751_devs[] = {
@ -430,6 +431,15 @@ static int sec_pmic_suspend(struct device *dev)
*/
disable_irq(sec_pmic->irq);
switch (sec_pmic->device_type) {
case S2MPS14X:
case S2MPU02:
regulator_suspend_prepare(PM_SUSPEND_MEM);
break;
default:
break;
}
return 0;
}