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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 MFD_CORE
select REGMAP_I2C select REGMAP_I2C
select REGMAP_IRQ select REGMAP_IRQ
select REGULATOR
help help
Support for the Samsung Electronics MFD series. Support for the Samsung Electronics MFD series.
This driver provides common support for accessing the device, 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/s2mpu02.h>
#include <linux/mfd/samsung/s5m8763.h> #include <linux/mfd/samsung/s5m8763.h>
#include <linux/mfd/samsung/s5m8767.h> #include <linux/mfd/samsung/s5m8767.h>
#include <linux/regulator/machine.h>
#include <linux/regmap.h> #include <linux/regmap.h>
static const struct mfd_cell s5m8751_devs[] = { static const struct mfd_cell s5m8751_devs[] = {
@ -430,6 +431,15 @@ static int sec_pmic_suspend(struct device *dev)
*/ */
disable_irq(sec_pmic->irq); 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; return 0;
} }