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power: axp818: Add support for DLDO and ELDO regulators

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AXP818 provides an array of LDOs to provide power to various peripherals.
None of these regulators are critical.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Chen-Yu Tsai 2016-01-12 14:42:38 +08:00 committed by Hans de Goede
parent 3517a27ddb
commit 0509efb7e9
2 changed files with 50 additions and 6 deletions
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12
drivers/power/Kconfig
View File

@ -167,7 +167,7 @@ config AXP_ALDO4_VOLT
config AXP_DLDO1_VOLT
int "axp pmic dldo1 voltage"
depends on AXP221_POWER
depends on AXP221_POWER || AXP818_POWER
default 0
---help---
Set the voltage (mV) to program the axp pmic dldo1 at, set to 0 to
@ -177,7 +177,7 @@ config AXP_DLDO1_VOLT
config AXP_DLDO2_VOLT
int "axp pmic dldo2 voltage"
depends on AXP221_POWER
depends on AXP221_POWER || AXP818_POWER
default 0
---help---
Set the voltage (mV) to program the axp pmic dldo2 at, set to 0 to
@ -185,7 +185,7 @@ config AXP_DLDO2_VOLT
config AXP_DLDO3_VOLT
int "axp pmic dldo3 voltage"
depends on AXP221_POWER
depends on AXP221_POWER || AXP818_POWER
default 0
---help---
Set the voltage (mV) to program the axp pmic dldo3 at, set to 0 to
@ -201,7 +201,7 @@ config AXP_DLDO4_VOLT
config AXP_ELDO1_VOLT
int "axp pmic eldo1 voltage"
depends on AXP221_POWER
depends on AXP221_POWER || AXP818_POWER
default 0
---help---
Set the voltage (mV) to program the axp pmic eldo1 at, set to 0 to
@ -209,7 +209,7 @@ config AXP_ELDO1_VOLT
config AXP_ELDO2_VOLT
int "axp pmic eldo2 voltage"
depends on AXP221_POWER
depends on AXP221_POWER || AXP818_POWER
default 0
---help---
Set the voltage (mV) to program the axp pmic eldo2 at, set to 0 to
@ -217,7 +217,7 @@ config AXP_ELDO2_VOLT
config AXP_ELDO3_VOLT
int "axp pmic eldo3 voltage"
depends on AXP221_POWER
depends on AXP221_POWER || AXP818_POWER
default 0
---help---
Set the voltage (mV) to program the axp pmic eldo3 at, set to 0 to

44
drivers/power/axp818.c
View File

@ -110,6 +110,50 @@ int axp_set_dcdc5(unsigned int mvolt)
AXP818_OUTPUT_CTRL1_DCDC5_EN);
}
int axp_set_dldo(int dldo_num, unsigned int mvolt)
{
int ret;
u8 cfg;
if (dldo_num < 1 || dldo_num > 4)
return -EINVAL;
if (mvolt == 0)
return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
cfg = axp818_mvolt_to_cfg(mvolt, 700, 3300, 100);
if (dldo_num == 2 && mvolt > 3300)
cfg += 1 + axp818_mvolt_to_cfg(mvolt, 3400, 4200, 200);
ret = pmic_bus_write(AXP818_ELDO1_CTRL + (dldo_num - 1), cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
}
int axp_set_eldo(int eldo_num, unsigned int mvolt)
{
int ret;
u8 cfg;
if (eldo_num < 1 || eldo_num > 3)
return -EINVAL;
if (mvolt == 0)
return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
cfg = axp818_mvolt_to_cfg(mvolt, 700, 1900, 50);
ret = pmic_bus_write(AXP818_ELDO1_CTRL + (eldo_num - 1), cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
}
int axp_init(void)
{
u8 axp_chip_id;