diff options
Diffstat (limited to 'drivers/power/axp313.c')
-rw-r--r-- | drivers/power/axp313.c | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/drivers/power/axp313.c b/drivers/power/axp313.c deleted file mode 100644 index bbc9e911115..00000000000 --- a/drivers/power/axp313.c +++ /dev/null @@ -1,134 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * AXP313(a) driver - * - * (C) Copyright 2023 Arm Ltd. - * - * Based on axp305.c - * (C) Copyright 2020 Jernej Skrabec <jernej.skrabec@siol.net> - * (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> - -enum axp313_reg { - AXP313_CHIP_VERSION = 0x03, - AXP313_OUTPUT_CTRL = 0x10, - AXP313_DCDC1_CTRL = 0x13, - AXP313_SHUTDOWN = 0x1a, -}; - -#define AXP313_CHIP_VERSION_MASK 0xcf -#define AXP313_CHIP_VERSION_AXP1530 0x48 -#define AXP313_CHIP_VERSION_AXP313A 0x4b -#define AXP313_CHIP_VERSION_AXP313B 0x4c - -#define AXP313_DCDC_SPLIT_OFFSET 71 -#define AXP313_DCDC_SPLIT_MVOLT 1200 - -#define AXP313_POWEROFF BIT(7) - -static u8 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 axp_set_dcdc(int dcdc_num, unsigned int mvolt) -{ - int ret; - u8 cfg, enable_mask = 1U << (dcdc_num - 1); - int volt_reg = AXP313_DCDC1_CTRL + dcdc_num - 1; - int max_mV; - - switch (dcdc_num) { - case 1: - case 2: - max_mV = 1540; - break; - case 3: - /* - * The manual defines a different split point, but tests - * show that it's the same 1200mV as for DCDC1/2. - */ - max_mV = 1840; - break; - default: - return -EINVAL; - } - - if (mvolt > AXP313_DCDC_SPLIT_MVOLT) - cfg = AXP313_DCDC_SPLIT_OFFSET + mvolt_to_cfg(mvolt, - AXP313_DCDC_SPLIT_MVOLT + 20, max_mV, 20); - else - cfg = mvolt_to_cfg(mvolt, 500, AXP313_DCDC_SPLIT_MVOLT, 10); - - if (mvolt == 0) - return pmic_bus_clrbits(AXP313_OUTPUT_CTRL, enable_mask); - - debug("DCDC%d: writing 0x%x to reg 0x%x\n", dcdc_num, cfg, volt_reg); - ret = pmic_bus_write(volt_reg, cfg); - if (ret) - return ret; - - return pmic_bus_setbits(AXP313_OUTPUT_CTRL, enable_mask); -} - -int axp_set_dcdc2(unsigned int mvolt) -{ - return axp_set_dcdc(2, mvolt); -} - -int axp_set_dcdc3(unsigned int mvolt) -{ - return axp_set_dcdc(3, mvolt); -} - -int axp_init(void) -{ - u8 axp_chip_id; - int ret; - - ret = pmic_bus_init(); - if (ret) - return ret; - - ret = pmic_bus_read(AXP313_CHIP_VERSION, &axp_chip_id); - if (ret) - return ret; - - axp_chip_id &= AXP313_CHIP_VERSION_MASK; - switch (axp_chip_id) { - case AXP313_CHIP_VERSION_AXP1530: - case AXP313_CHIP_VERSION_AXP313A: - case AXP313_CHIP_VERSION_AXP313B: - break; - default: - debug("unknown PMIC: 0x%x\n", axp_chip_id); - return -EINVAL; - } - - return ret; -} - -#if !CONFIG_IS_ENABLED(ARM_PSCI_FW) && !IS_ENABLED(CONFIG_SYSRESET_CMD_POWEROFF) -int do_poweroff(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) -{ - pmic_bus_write(AXP313_SHUTDOWN, AXP313_POWEROFF); - - /* infinite loop during shutdown */ - while (1) {} - - /* not reached */ - return 0; -} -#endif |