diff options
Diffstat (limited to 'roms/u-boot/drivers/power/axp221.c')
| -rw-r--r-- | roms/u-boot/drivers/power/axp221.c | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/power/axp221.c b/roms/u-boot/drivers/power/axp221.c new file mode 100644 index 000000000..3446fe736 --- /dev/null +++ b/roms/u-boot/drivers/power/axp221.c @@ -0,0 +1,276 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * AXP221 and AXP223 driver + * + * IMPORTANT when making changes to this file check that the registers + * used are the same for the axp221 and axp223. + * + * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com> + * (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl> + */ + +#include <common.h> +#include <command.h> +#include <errno.h> +#include <asm/arch/pmic_bus.h> +#include <axp_pmic.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; +} + +int axp_set_dcdc1(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 1600, 3400, 100); + + if (mvolt == 0) + return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC1_EN); + + ret = pmic_bus_write(AXP221_DCDC1_CTRL, cfg); + if (ret) + return ret; + + ret = pmic_bus_setbits(AXP221_OUTPUT_CTRL2, + AXP221_OUTPUT_CTRL2_DCDC1SW_EN); + if (ret) + return ret; + + return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC1_EN); +} + +int axp_set_dcdc2(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20); + + if (mvolt == 0) + return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC2_EN); + + ret = pmic_bus_write(AXP221_DCDC2_CTRL, cfg); + if (ret) + return ret; + + return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC2_EN); +} + +int axp_set_dcdc3(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1860, 20); + + if (mvolt == 0) + return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC3_EN); + + ret = pmic_bus_write(AXP221_DCDC3_CTRL, cfg); + if (ret) + return ret; + + return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC3_EN); +} + +int axp_set_dcdc4(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20); + + if (mvolt == 0) + return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC4_EN); + + ret = pmic_bus_write(AXP221_DCDC4_CTRL, cfg); + if (ret) + return ret; + + return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC4_EN); +} + +int axp_set_dcdc5(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 1000, 2550, 50); + + if (mvolt == 0) + return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC5_EN); + + ret = pmic_bus_write(AXP221_DCDC5_CTRL, cfg); + if (ret) + return ret; + + return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_DCDC5_EN); +} + +int axp_set_aldo1(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); + + if (mvolt == 0) + return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_ALDO1_EN); + + ret = pmic_bus_write(AXP221_ALDO1_CTRL, cfg); + if (ret) + return ret; + + return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_ALDO1_EN); +} + +int axp_set_aldo2(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); + + if (mvolt == 0) + return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_ALDO2_EN); + + ret = pmic_bus_write(AXP221_ALDO2_CTRL, cfg); + if (ret) + return ret; + + return pmic_bus_setbits(AXP221_OUTPUT_CTRL1, + AXP221_OUTPUT_CTRL1_ALDO2_EN); +} + +int axp_set_aldo3(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); + + if (mvolt == 0) + return pmic_bus_clrbits(AXP221_OUTPUT_CTRL3, + AXP221_OUTPUT_CTRL3_ALDO3_EN); + + ret = pmic_bus_write(AXP221_ALDO3_CTRL, cfg); + if (ret) + return ret; + + return pmic_bus_setbits(AXP221_OUTPUT_CTRL3, + AXP221_OUTPUT_CTRL3_ALDO3_EN); +} + +int axp_set_dldo(int dldo_num, unsigned int mvolt) +{ + u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); + int ret; + + if (dldo_num < 1 || dldo_num > 4) + return -EINVAL; + + if (mvolt == 0) + return pmic_bus_clrbits(AXP221_OUTPUT_CTRL2, + AXP221_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1)); + + ret = pmic_bus_write(AXP221_DLDO1_CTRL + (dldo_num - 1), cfg); + if (ret) + return ret; + + return pmic_bus_setbits(AXP221_OUTPUT_CTRL2, + AXP221_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1)); +} + +int axp_set_eldo(int eldo_num, unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); + + if (eldo_num < 1 || eldo_num > 3) + return -EINVAL; + + if (mvolt == 0) + return pmic_bus_clrbits(AXP221_OUTPUT_CTRL2, + AXP221_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1)); + + ret = pmic_bus_write(AXP221_ELDO1_CTRL + (eldo_num - 1), cfg); + if (ret) + return ret; + + return pmic_bus_setbits(AXP221_OUTPUT_CTRL2, + AXP221_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1)); +} + +int axp_init(void) +{ + u8 axp_chip_id; + int ret; + + ret = pmic_bus_init(); + if (ret) + return ret; + + ret = pmic_bus_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; + + /* + * Turn off LDOIO regulators / tri-state GPIO pins, when rebooting + * from android these are sometimes on. + */ + ret = pmic_bus_write(AXP_GPIO0_CTRL, AXP_GPIO_CTRL_INPUT); + if (ret) + return ret; + + ret = pmic_bus_write(AXP_GPIO1_CTRL, AXP_GPIO_CTRL_INPUT); + if (ret) + return ret; + + return 0; +} + +int axp_get_sid(unsigned int *sid) +{ + u8 *dest = (u8 *)sid; + int i, ret; + + ret = pmic_bus_init(); + if (ret) + return ret; + + ret = pmic_bus_write(AXP221_PAGE, 1); + if (ret) + return ret; + + for (i = 0; i < 16; i++) { + ret = pmic_bus_read(AXP221_SID + i, &dest[i]); + if (ret) + return ret; + } + + pmic_bus_write(AXP221_PAGE, 0); + + for (i = 0; i < 4; i++) + sid[i] = be32_to_cpu(sid[i]); + + return 0; +} + +int do_poweroff(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) +{ + pmic_bus_write(AXP221_SHUTDOWN, AXP221_SHUTDOWN_POWEROFF); + + /* infinite loop during shutdown */ + while (1) {} + + /* not reached */ + return 0; +} |