diff options
Diffstat (limited to 'drivers/power/axp809.c')
| -rw-r--r-- | drivers/power/axp809.c | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/drivers/power/axp809.c b/drivers/power/axp809.c new file mode 100644 index 0000000000..c8b76cf9b7 --- /dev/null +++ b/drivers/power/axp809.c @@ -0,0 +1,238 @@ +/* + * AXP809 driver based on AXP221 driver + * + * + * (C) Copyright 2016 Chen-Yu Tsai <wens@csie.org> + * + * Based on axp221.c + * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com> + * (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <errno.h> +#include <asm/arch/gpio.h> +#include <asm/arch/pmic_bus.h> +#include <axp_pmic.h> + +static u8 axp809_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 = axp809_mvolt_to_cfg(mvolt, 1600, 3400, 100); + + if (mvolt == 0) + return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1, + AXP809_OUTPUT_CTRL1_DCDC1_EN); + + ret = pmic_bus_write(AXP809_DCDC1_CTRL, cfg); + if (ret) + return ret; + + ret = pmic_bus_setbits(AXP809_OUTPUT_CTRL2, + AXP809_OUTPUT_CTRL2_DC1SW_EN); + if (ret) + return ret; + + return pmic_bus_setbits(AXP809_OUTPUT_CTRL1, + AXP809_OUTPUT_CTRL1_DCDC1_EN); +} + +int axp_set_dcdc2(unsigned int mvolt) +{ + int ret; + u8 cfg = axp809_mvolt_to_cfg(mvolt, 600, 1540, 20); + + if (mvolt == 0) + return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1, + AXP809_OUTPUT_CTRL1_DCDC2_EN); + + ret = pmic_bus_write(AXP809_DCDC2_CTRL, cfg); + if (ret) + return ret; + + return pmic_bus_setbits(AXP809_OUTPUT_CTRL1, + AXP809_OUTPUT_CTRL1_DCDC2_EN); +} + +int axp_set_dcdc3(unsigned int mvolt) +{ + int ret; + u8 cfg = axp809_mvolt_to_cfg(mvolt, 600, 1860, 20); + + if (mvolt == 0) + return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1, + AXP809_OUTPUT_CTRL1_DCDC3_EN); + + ret = pmic_bus_write(AXP809_DCDC3_CTRL, cfg); + if (ret) + return ret; + + return pmic_bus_setbits(AXP809_OUTPUT_CTRL1, + AXP809_OUTPUT_CTRL1_DCDC3_EN); +} + +int axp_set_dcdc4(unsigned int mvolt) +{ + int ret; + u8 cfg = axp809_mvolt_to_cfg(mvolt, 600, 1540, 20); + + if (mvolt >= 1540) + cfg = 0x30 + axp809_mvolt_to_cfg(mvolt, 1800, 2600, 100); + + if (mvolt == 0) + return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1, + AXP809_OUTPUT_CTRL1_DCDC4_EN); + + ret = pmic_bus_write(AXP809_DCDC5_CTRL, cfg); + if (ret) + return ret; + + return pmic_bus_setbits(AXP809_OUTPUT_CTRL1, + AXP809_OUTPUT_CTRL1_DCDC4_EN); +} + +int axp_set_dcdc5(unsigned int mvolt) +{ + int ret; + u8 cfg = axp809_mvolt_to_cfg(mvolt, 1000, 2550, 50); + + if (mvolt == 0) + return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1, + AXP809_OUTPUT_CTRL1_DCDC5_EN); + + ret = pmic_bus_write(AXP809_DCDC5_CTRL, cfg); + if (ret) + return ret; + + return pmic_bus_setbits(AXP809_OUTPUT_CTRL1, + AXP809_OUTPUT_CTRL1_DCDC5_EN); +} + +int axp_set_aldo(int aldo_num, unsigned int mvolt) +{ + int ret; + u8 cfg; + + if (aldo_num < 1 || aldo_num > 3) + return -EINVAL; + + if (mvolt == 0 && aldo_num == 3) + return pmic_bus_clrbits(AXP809_OUTPUT_CTRL2, + AXP809_OUTPUT_CTRL2_ALDO3_EN); + if (mvolt == 0) + return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1, + AXP809_OUTPUT_CTRL1_ALDO1_EN << (aldo_num - 1)); + + cfg = axp809_mvolt_to_cfg(mvolt, 700, 3300, 100); + ret = pmic_bus_write(AXP809_ALDO1_CTRL + (aldo_num - 1), cfg); + if (ret) + return ret; + + if (aldo_num == 3) + return pmic_bus_setbits(AXP809_OUTPUT_CTRL2, + AXP809_OUTPUT_CTRL2_ALDO3_EN); + return pmic_bus_clrbits(AXP809_OUTPUT_CTRL1, + AXP809_OUTPUT_CTRL1_ALDO1_EN << (aldo_num - 1)); +} + +/* TODO: re-work other AXP drivers to consolidate ALDO functions. */ +int axp_set_aldo1(unsigned int mvolt) +{ + return axp_set_aldo(1, mvolt); +} + +int axp_set_aldo2(unsigned int mvolt) +{ + return axp_set_aldo(2, mvolt); +} + +int axp_set_aldo3(unsigned int mvolt) +{ + return axp_set_aldo(3, mvolt); +} + +int axp_set_dldo(int dldo_num, unsigned int mvolt) +{ + u8 cfg = axp809_mvolt_to_cfg(mvolt, 700, 3300, 100); + int ret; + + if (dldo_num < 1 || dldo_num > 2) + return -EINVAL; + + if (mvolt == 0) + return pmic_bus_clrbits(AXP809_OUTPUT_CTRL2, + AXP809_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1)); + + if (dldo_num == 1 && mvolt > 3300) + cfg += 1 + axp809_mvolt_to_cfg(mvolt, 3400, 4200, 200); + ret = pmic_bus_write(AXP809_DLDO1_CTRL + (dldo_num - 1), cfg); + if (ret) + return ret; + + return pmic_bus_setbits(AXP809_OUTPUT_CTRL2, + AXP809_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1)); +} + +int axp_set_eldo(int eldo_num, unsigned int mvolt) +{ + int ret; + u8 cfg = axp809_mvolt_to_cfg(mvolt, 700, 3300, 100); + + if (eldo_num < 1 || eldo_num > 3) + return -EINVAL; + + if (mvolt == 0) + return pmic_bus_clrbits(AXP809_OUTPUT_CTRL2, + AXP809_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1)); + + ret = pmic_bus_write(AXP809_ELDO1_CTRL + (eldo_num - 1), cfg); + if (ret) + return ret; + + return pmic_bus_setbits(AXP809_OUTPUT_CTRL2, + AXP809_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1)); +} + +int axp_set_sw(bool on) +{ + if (on) + return pmic_bus_setbits(AXP809_OUTPUT_CTRL2, + AXP809_OUTPUT_CTRL2_SWOUT_EN); + + return pmic_bus_clrbits(AXP809_OUTPUT_CTRL2, + AXP809_OUTPUT_CTRL2_SWOUT_EN); +} + +int axp_init(void) +{ + int ret; + + ret = pmic_bus_init(); + if (ret) + return ret; + + return 0; +} + +int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + pmic_bus_write(AXP809_SHUTDOWN, AXP809_SHUTDOWN_POWEROFF); + + /* infinite loop during shutdown */ + while (1) {} + + /* not reached */ + return 0; +} |
