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power: pmic: sunxi: use generic AXP SPL driver for AXP305

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The generic AXP SPL driver implementation can cover all regulators we
need for the AXP305.

Add the descriptions for four of the six DC/DC regulators of the AXP305,
and enable that when CONFIG_AXP305_POWER is enabled. We won't need DCDC2
and DCDC3, but by using the position in the array for the index we keep
the code cleaner.
Also remove the old driver, and switch the Makefile to include the new,
generic driver.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
This commit is contained in:
Andre Przywara 2024-05-14 00:47:09 +01:00
parent 670c0324a1
commit f5a7532676
3 changed files with 17 additions and 83 deletions
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2
drivers/power/Makefile
View file

@ -12,7 +12,7 @@ obj-$(CONFIG_AXP221_POWER) += axp221.o
ifdef CONFIG_SPL_BUILD
obj-$(CONFIG_AXP152_POWER) += axp152.o
obj-$(CONFIG_AXP209_POWER) += axp209.o
obj-$(CONFIG_AXP305_POWER) += axp305.o
obj-$(CONFIG_AXP305_POWER) += axp_spl.o
obj-$(CONFIG_AXP313_POWER) += axp_spl.o
obj-$(CONFIG_AXP717_POWER) += axp_spl.o
obj-$(CONFIG_AXP809_POWER) += axp809.o

82
drivers/power/axp305.c
View file

@ -1,82 +0,0 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* AXP305 driver
*
* (C) Copyright 2020 Jernej Skrabec <jernej.skrabec@siol.net>
*
* Based on axp221.c
* (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
* (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
*/
#include <command.h>
#include <errno.h>
#include <asm/arch/pmic_bus.h>
#include <axp_pmic.h>
#define AXP305_DCDC4_1600MV_OFFSET 46
static u8 axp305_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_dcdc4(unsigned int mvolt)
{
int ret;
u8 cfg;
if (mvolt >= 1600)
cfg = AXP305_DCDC4_1600MV_OFFSET +
axp305_mvolt_to_cfg(mvolt, 1600, 3300, 100);
else
cfg = axp305_mvolt_to_cfg(mvolt, 600, 1500, 20);
if (mvolt == 0)
return pmic_bus_clrbits(AXP305_OUTPUT_CTRL1,
AXP305_OUTPUT_CTRL1_DCDCD_EN);
ret = pmic_bus_write(AXP305_DCDCD_VOLTAGE, cfg);
if (ret)
return ret;
return pmic_bus_setbits(AXP305_OUTPUT_CTRL1,
AXP305_OUTPUT_CTRL1_DCDCD_EN);
}
int axp_init(void)
{
u8 axp_chip_id;
int ret;
ret = pmic_bus_init();
if (ret)
return ret;
ret = pmic_bus_read(AXP305_CHIP_VERSION, &axp_chip_id);
if (ret)
return ret;
if ((axp_chip_id & AXP305_CHIP_VERSION_MASK) != 0x40)
return -ENODEV;
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(AXP305_SHUTDOWN, AXP305_POWEROFF);
/* infinite loop during shutdown */
while (1) {}
/* not reached */
return 0;
}
#endif

16
drivers/power/axp_spl.c
View file

@ -50,6 +50,22 @@ static const struct axp_reg_desc_spl axp_spl_dcdc_regulators[] = {
#define AXP_SHUTDOWN_REG 0x1a
#define AXP_SHUTDOWN_MASK BIT(7)
#elif defined(CONFIG_AXP305_POWER) /* AXP305 */
static const struct axp_reg_desc_spl axp_spl_dcdc_regulators[] = {
{ 0x10, BIT(0), 0x12, 0x7f, 600, 1520, 10, 50 },
{ 0x10, BIT(1), 0x13, 0x1f, 1000, 2550, 50, NA },
{ 0x10, BIT(2), 0x14, 0x7f, 600, 1520, 10, 50 },
{ 0x10, BIT(3), 0x15, 0x3f, 600, 1500, 20, NA },
{ 0x10, BIT(4), 0x16, 0x1f, 1100, 3400, 100, NA },
};
#define AXP_CHIP_VERSION 0x3
#define AXP_CHIP_VERSION_MASK 0xcf
#define AXP_CHIP_ID 0x40
#define AXP_SHUTDOWN_REG 0x32
#define AXP_SHUTDOWN_MASK BIT(7)
#else
#error "Please define the regulator registers in axp_spl_regulators[]."