diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/power/Kconfig | 47 | ||||
| -rw-r--r-- | drivers/power/Makefile | 1 | ||||
| -rw-r--r-- | drivers/power/axp221.c | 186 |
3 files changed, 234 insertions, 0 deletions
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig index e69de29..1ec7c0e 100644 --- a/drivers/power/Kconfig +++ b/drivers/power/Kconfig @@ -0,0 +1,47 @@ +config AXP221_POWER + boolean "axp221 pmic support" + depends on MACH_SUN6I + default y + ---help--- + Say y here to enable support for the axp221 pmic found on most sun6i + (A31) boards. + +config AXP221_DLDO1_VOLT + int "axp221 dldo1 voltage" + depends on AXP221_POWER + default -1 + ---help--- + Set the voltage (mV) to program the axp221 dldo1 at, set to -1 to + disable dldo1. + +config AXP221_DLDO4_VOLT + int "axp221 dldo4 voltage" + depends on AXP221_POWER + default -1 + ---help--- + Set the voltage (mV) to program the axp221 dldo4 at, set to -1 to + disable dldo4. + +config AXP221_ALDO1_VOLT + int "axp221 aldo1 voltage" + depends on AXP221_POWER + default -1 + ---help--- + Set the voltage (mV) to program the axp221 aldo1 at, set to -1 to + disable aldo1. + +config AXP221_ALDO2_VOLT + int "axp221 aldo2 voltage" + depends on AXP221_POWER + default -1 + ---help--- + Set the voltage (mV) to program the axp221 aldo2 at, set to -1 to + disable aldo2. + +config AXP221_ALDO3_VOLT + int "axp221 aldo3 voltage" + depends on AXP221_POWER + default -1 + ---help--- + Set the voltage (mV) to program the axp221 aldo3 at, set to -1 to + disable aldo3. diff --git a/drivers/power/Makefile b/drivers/power/Makefile index dc64e4d..04bd996 100644 --- a/drivers/power/Makefile +++ b/drivers/power/Makefile @@ -7,6 +7,7 @@ obj-$(CONFIG_AXP152_POWER) += axp152.o obj-$(CONFIG_AXP209_POWER) += axp209.o +obj-$(CONFIG_AXP221_POWER) += axp221.o obj-$(CONFIG_EXYNOS_TMU) += exynos-tmu.o obj-$(CONFIG_FTPMU010_POWER) += ftpmu010.o obj-$(CONFIG_TPS6586X_POWER) += tps6586x.o diff --git a/drivers/power/axp221.c b/drivers/power/axp221.c new file mode 100644 index 0000000..941193a --- /dev/null +++ b/drivers/power/axp221.c @@ -0,0 +1,186 @@ +/* + * (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <errno.h> +#include <asm/arch/p2wi.h> +#include <axp221.h> + +static u8 axp221_mvolt_to_cfg(int mvolt, int min, int max, int div) +{ + if (mvolt < min) + mvolt = min; + else if (mvolt > max) + mvolt = max; + + return (mvolt - min) / div; +} + +static int axp221_setbits(u8 reg, u8 bits) +{ + int ret; + u8 val; + + ret = p2wi_read(reg, &val); + if (ret) + return ret; + + val |= bits; + return p2wi_write(reg, val); +} + +int axp221_set_dcdc1(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 1600, 3400, 100); + + ret = p2wi_write(AXP221_DCDC1_CTRL, cfg); + if (ret) + return ret; + + return axp221_setbits(AXP221_OUTPUT_CTRL2, + AXP221_OUTPUT_CTRL2_DCDC1_EN); +} + +int axp221_set_dcdc2(unsigned int mvolt) +{ + u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20); + + return p2wi_write(AXP221_DCDC2_CTRL, cfg); +} + +int axp221_set_dcdc3(unsigned int mvolt) +{ + u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1860, 20); + + return p2wi_write(AXP221_DCDC3_CTRL, cfg); +} + +int axp221_set_dcdc4(unsigned int mvolt) +{ + u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20); + + return p2wi_write(AXP221_DCDC4_CTRL, cfg); +} + +int axp221_set_dcdc5(unsigned int mvolt) +{ + u8 cfg = axp221_mvolt_to_cfg(mvolt, 1000, 2550, 50); + + return p2wi_write(AXP221_DCDC5_CTRL, cfg); +} + +int axp221_set_dldo1(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); + + ret = p2wi_write(AXP221_DLDO1_CTRL, cfg); + if (ret) + return ret; + + return axp221_setbits(AXP221_OUTPUT_CTRL2, + AXP221_OUTPUT_CTRL2_DLDO1_EN); +} + +int axp221_set_dldo2(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); + + ret = p2wi_write(AXP221_DLDO2_CTRL, cfg); + if (ret) + return ret; + + return axp221_setbits(AXP221_OUTPUT_CTRL2, + AXP221_OUTPUT_CTRL2_DLDO2_EN); +} + +int axp221_set_dldo3(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); + + ret = p2wi_write(AXP221_DLDO3_CTRL, cfg); + if (ret) + return ret; + + return axp221_setbits(AXP221_OUTPUT_CTRL2, + AXP221_OUTPUT_CTRL2_DLDO3_EN); +} + +int axp221_set_dldo4(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); + + ret = p2wi_write(AXP221_DLDO4_CTRL, cfg); + if (ret) + return ret; + + return axp221_setbits(AXP221_OUTPUT_CTRL2, + AXP221_OUTPUT_CTRL2_DLDO4_EN); +} + +int axp221_set_aldo1(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); + + ret = p2wi_write(AXP221_ALDO1_CTRL, cfg); + if (ret) + return ret; + + return axp221_setbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_ALDO1_EN); +} + +int axp221_set_aldo2(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); + + ret = p2wi_write(AXP221_ALDO2_CTRL, cfg); + if (ret) + return ret; + + return axp221_setbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_ALDO2_EN); +} + +int axp221_set_aldo3(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); + + ret = p2wi_write(AXP221_ALDO3_CTRL, cfg); + if (ret) + return ret; + + return axp221_setbits(AXP221_OUTPUT_CTRL3, + AXP221_OUTPUT_CTRL3_ALDO3_EN); +} + +int axp221_init(void) +{ + u8 axp_chip_id; + int ret; + + p2wi_init(); + ret = p2wi_change_to_p2wi_mode(AXP221_CHIP_ADDR, AXP221_CTRL_ADDR, + AXP221_INIT_DATA); + if (ret) + return ret; + + ret = p2wi_read(AXP221_CHIP_ID, &axp_chip_id); + if (ret) + return ret; + + if (!(axp_chip_id == 0x6 || axp_chip_id == 0x7 || axp_chip_id == 0x17)) + return -ENODEV; + + return 0; +} |