/* * AXP818 driver based on AXP221 driver * * * (C) Copyright 2015 Vishnu Patekar <vishnuptekar0510@gmail.com> * * 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 axp818_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 = axp818_mvolt_to_cfg(mvolt, 1600, 3400, 100); if (mvolt == 0) return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1, AXP818_OUTPUT_CTRL1_DCDC1_EN); ret = pmic_bus_write(AXP818_DCDC1_CTRL, cfg); if (ret) return ret; return pmic_bus_setbits(AXP818_OUTPUT_CTRL1, AXP818_OUTPUT_CTRL1_DCDC1_EN); } int axp_set_dcdc2(unsigned int mvolt) { int ret; u8 cfg; if (mvolt >= 1220) cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20); else cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10); if (mvolt == 0) return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1, AXP818_OUTPUT_CTRL1_DCDC2_EN); ret = pmic_bus_write(AXP818_DCDC2_CTRL, cfg); if (ret) return ret; return pmic_bus_setbits(AXP818_OUTPUT_CTRL1, AXP818_OUTPUT_CTRL1_DCDC2_EN); } int axp_set_dcdc3(unsigned int mvolt) { int ret; u8 cfg; if (mvolt >= 1220) cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20); else cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10); if (mvolt == 0) return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1, AXP818_OUTPUT_CTRL1_DCDC3_EN); ret = pmic_bus_write(AXP818_DCDC3_CTRL, cfg); if (ret) return ret; return pmic_bus_setbits(AXP818_OUTPUT_CTRL1, AXP818_OUTPUT_CTRL1_DCDC3_EN); } int axp_set_dcdc5(unsigned int mvolt) { int ret; u8 cfg; if (mvolt >= 1140) cfg = 32 + axp818_mvolt_to_cfg(mvolt, 1140, 1840, 20); else cfg = axp818_mvolt_to_cfg(mvolt, 800, 1120, 10); if (mvolt == 0) return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1, AXP818_OUTPUT_CTRL1_DCDC5_EN); ret = pmic_bus_write(AXP818_DCDC5_CTRL, cfg); if (ret) return ret; return pmic_bus_setbits(AXP818_OUTPUT_CTRL1, AXP818_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) return pmic_bus_clrbits(AXP818_OUTPUT_CTRL3, AXP818_OUTPUT_CTRL3_ALDO1_EN << (aldo_num - 1)); cfg = axp818_mvolt_to_cfg(mvolt, 700, 3300, 100); ret = pmic_bus_write(AXP818_ALDO1_CTRL + (aldo_num - 1), cfg); if (ret) return ret; return pmic_bus_setbits(AXP818_OUTPUT_CTRL3, AXP818_OUTPUT_CTRL3_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) { 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_set_fldo(int fldo_num, unsigned int mvolt) { int ret; u8 cfg; if (fldo_num < 1 || fldo_num > 3) return -EINVAL; if (mvolt == 0) return pmic_bus_clrbits(AXP818_OUTPUT_CTRL3, AXP818_OUTPUT_CTRL3_FLDO1_EN << (fldo_num - 1)); if (fldo_num < 3) { cfg = axp818_mvolt_to_cfg(mvolt, 700, 1450, 50); ret = pmic_bus_write(AXP818_FLDO1_CTRL + (fldo_num - 1), cfg); } else { /* * Special case for FLDO3, which is DCDC5 / 2 or FLDOIN / 2 * Since FLDOIN is unknown, test against DCDC5. */ if (mvolt * 2 == CONFIG_AXP_DCDC5_VOLT) ret = pmic_bus_clrbits(AXP818_FLDO2_3_CTRL, AXP818_FLDO2_3_CTRL_FLDO3_VOL); else ret = pmic_bus_setbits(AXP818_FLDO2_3_CTRL, AXP818_FLDO2_3_CTRL_FLDO3_VOL); } if (ret) return ret; return pmic_bus_setbits(AXP818_OUTPUT_CTRL3, AXP818_OUTPUT_CTRL3_FLDO1_EN << (fldo_num - 1)); } int axp_set_sw(bool on) { if (on) return pmic_bus_setbits(AXP818_OUTPUT_CTRL2, AXP818_OUTPUT_CTRL2_SW_EN); return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2, AXP818_OUTPUT_CTRL2_SW_EN); } int axp_init(void) { u8 axp_chip_id; int ret; ret = pmic_bus_init(); if (ret) return ret; ret = pmic_bus_read(AXP818_CHIP_ID, &axp_chip_id); if (ret) return ret; if (!(axp_chip_id == 0x51)) return -ENODEV; else return ret; return 0; } int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { pmic_bus_write(AXP818_SHUTDOWN, AXP818_SHUTDOWN_POWEROFF); /* infinite loop during shutdown */ while (1) {} /* not reached */ return 0; }