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power: pmic: sunxi: use generic AXP SPL driver for AXP313
The generic AXP SPL driver implementation can cover all regulators we need for the AXP313. Add the descriptions for the three DC/DC regulators of the AXP313, and enable that when CONFIG_AXP313_POWER is enabled. Also remove the old driver, and switch the Makefile to include the new, generic version. Signed-off-by: Andre Przywara <andre.przywara@arm.com>
This commit is contained in:
Andre Przywara
@@ -13,7 +13,7 @@ ifdef CONFIG_SPL_BUILD
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obj-$(CONFIG_AXP152_POWER) += axp152.o
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obj-$(CONFIG_AXP209_POWER) += axp209.o
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obj-$(CONFIG_AXP305_POWER) += axp305.o
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obj-$(CONFIG_AXP313_POWER) += axp313.o
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obj-$(CONFIG_AXP313_POWER) += axp_spl.o
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obj-$(CONFIG_AXP717_POWER) += axp_spl.o
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obj-$(CONFIG_AXP809_POWER) += axp809.o
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obj-$(CONFIG_AXP818_POWER) += axp818.o
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@@ -1,133 +0,0 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* AXP313(a) driver
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*
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* (C) Copyright 2023 Arm Ltd.
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*
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* Based on axp305.c
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* (C) Copyright 2020 Jernej Skrabec <jernej.skrabec@siol.net>
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* (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
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* (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
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*/
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#include <command.h>
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#include <errno.h>
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#include <asm/arch/pmic_bus.h>
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#include <axp_pmic.h>
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enum axp313_reg {
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AXP313_CHIP_VERSION = 0x03,
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AXP313_OUTPUT_CTRL = 0x10,
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AXP313_DCDC1_CTRL = 0x13,
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AXP313_SHUTDOWN = 0x1a,
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};
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#define AXP313_CHIP_VERSION_MASK 0xcf
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#define AXP313_CHIP_VERSION_AXP1530 0x48
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#define AXP313_CHIP_VERSION_AXP313A 0x4b
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#define AXP313_CHIP_VERSION_AXP313B 0x4c
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#define AXP313_DCDC_SPLIT_OFFSET 71
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#define AXP313_DCDC_SPLIT_MVOLT 1200
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#define AXP313_POWEROFF BIT(7)
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static u8 mvolt_to_cfg(int mvolt, int min, int max, int div)
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{
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if (mvolt < min)
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mvolt = min;
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else if (mvolt > max)
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mvolt = max;
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return (mvolt - min) / div;
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}
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static int axp_set_dcdc(int dcdc_num, unsigned int mvolt)
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{
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int ret;
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u8 cfg, enable_mask = 1U << (dcdc_num - 1);
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int volt_reg = AXP313_DCDC1_CTRL + dcdc_num - 1;
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int max_mV;
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switch (dcdc_num) {
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case 1:
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case 2:
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max_mV = 1540;
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break;
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case 3:
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/*
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* The manual defines a different split point, but tests
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* show that it's the same 1200mV as for DCDC1/2.
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*/
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max_mV = 1840;
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break;
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default:
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return -EINVAL;
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}
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if (mvolt > AXP313_DCDC_SPLIT_MVOLT)
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cfg = AXP313_DCDC_SPLIT_OFFSET + mvolt_to_cfg(mvolt,
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AXP313_DCDC_SPLIT_MVOLT + 20, max_mV, 20);
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else
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cfg = mvolt_to_cfg(mvolt, 500, AXP313_DCDC_SPLIT_MVOLT, 10);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP313_OUTPUT_CTRL, enable_mask);
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debug("DCDC%d: writing 0x%x to reg 0x%x\n", dcdc_num, cfg, volt_reg);
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ret = pmic_bus_write(volt_reg, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP313_OUTPUT_CTRL, enable_mask);
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}
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int axp_set_dcdc2(unsigned int mvolt)
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{
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return axp_set_dcdc(2, mvolt);
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}
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int axp_set_dcdc3(unsigned int mvolt)
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{
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return axp_set_dcdc(3, mvolt);
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}
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int axp_init(void)
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{
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u8 axp_chip_id;
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int ret;
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ret = pmic_bus_init();
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if (ret)
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return ret;
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ret = pmic_bus_read(AXP313_CHIP_VERSION, &axp_chip_id);
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if (ret)
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return ret;
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axp_chip_id &= AXP313_CHIP_VERSION_MASK;
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switch (axp_chip_id) {
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case AXP313_CHIP_VERSION_AXP1530:
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case AXP313_CHIP_VERSION_AXP313A:
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case AXP313_CHIP_VERSION_AXP313B:
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break;
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default:
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debug("unknown PMIC: 0x%x\n", axp_chip_id);
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return -EINVAL;
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}
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return ret;
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}
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#if !CONFIG_IS_ENABLED(ARM_PSCI_FW) && !IS_ENABLED(CONFIG_SYSRESET_CMD_POWEROFF)
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int do_poweroff(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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pmic_bus_write(AXP313_SHUTDOWN, AXP313_POWEROFF);
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/* infinite loop during shutdown */
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while (1) {}
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/* not reached */
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return 0;
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}
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#endif
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@@ -36,6 +36,20 @@ static const struct axp_reg_desc_spl axp_spl_dcdc_regulators[] = {
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#define AXP_SHUTDOWN_REG 0x27
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#define AXP_SHUTDOWN_MASK BIT(0)
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#elif defined(CONFIG_AXP313_POWER) /* AXP313 */
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static const struct axp_reg_desc_spl axp_spl_dcdc_regulators[] = {
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{ 0x10, BIT(0), 0x13, 0x7f, 500, 1540, 10, 70 },
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{ 0x10, BIT(1), 0x14, 0x7f, 500, 1540, 10, 70 },
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{ 0x10, BIT(2), 0x15, 0x7f, 500, 1840, 10, 70 },
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};
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#define AXP_CHIP_VERSION 0x3
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#define AXP_CHIP_VERSION_MASK 0xc8
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#define AXP_CHIP_ID 0x48
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#define AXP_SHUTDOWN_REG 0x1a
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#define AXP_SHUTDOWN_MASK BIT(7)
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#else
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#error "Please define the regulator registers in axp_spl_regulators[]."
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