int pmic_bus_init(void)
{
/* This cannot be 0 because it is used in SPL before BSS is ready */
static int needs_init = 1;
__maybe_unused int ret;
if (!needs_init)
return 0;
#if defined CONFIG_AXP221_POWER || defined CONFIG_AXP809_POWER || defined CONFIG_AXP818_POWER
# ifdef CONFIG_MACH_SUN6I
p2wi_init();
ret = p2wi_change_to_p2wi_mode(AXP221_CHIP_ADDR, AXP221_CTRL_ADDR,
AXP221_INIT_DATA);
# else
ret = rsb_init();
if (ret)
return ret;
ret = rsb_set_device_address(AXP223_DEVICE_ADDR, AXP223_RUNTIME_ADDR);
# endif
if (ret)
return ret;
#endif
needs_init = 0;
return 0;
}
int sunxi_pmic_setup(uint16_t socid, const void *fdt)
{
int ret;
switch (socid) {
case SUNXI_SOC_H5:
pmic = REF_DESIGN_H5;
NOTICE("BL31: PMIC: Defaulting to PortL GPIO according to H5 reference design.\n");
break;
case SUNXI_SOC_A64:
pmic = GENERIC_A64;
ret = sunxi_init_platform_r_twi(socid, true);
if (ret)
return ret;
ret = rsb_init();
if (ret)
return ret;
pmic = AXP803_RSB;
NOTICE("BL31: PMIC: Detected AXP803 on RSB.\n");
if (fdt)
setup_axp803_rails(fdt);
break;
default:
NOTICE("BL31: PMIC: No support for Allwinner %x SoC.\n", socid);
return -ENODEV;
}
return 0;
}
void __dead2 sunxi_power_down(void)
{
switch (pmic) {
case GENERIC_H5:
/* Turn off as many peripherals and clocks as we can. */
sunxi_turn_off_soc(SUNXI_SOC_H5);
/* Turn off the pin controller now. */
mmio_write_32(SUNXI_CCU_BASE + 0x68, 0);
break;
case GENERIC_A64:
/* Turn off as many peripherals and clocks as we can. */
sunxi_turn_off_soc(SUNXI_SOC_A64);
/* Turn off the pin controller now. */
mmio_write_32(SUNXI_CCU_BASE + 0x68, 0);
break;
case REF_DESIGN_H5:
sunxi_turn_off_soc(SUNXI_SOC_H5);
/*
* Switch PL pins to power off the board:
* - PL5 (VCC_IO) -> high
* - PL8 (PWR-STB = CPU power supply) -> low
* - PL9 (PWR-DRAM) ->low
* - PL10 (power LED) -> low
* Note: Clearing PL8 will reset the board, so keep it up.
*/
sunxi_set_gpio_out('L', 5, 1);
sunxi_set_gpio_out('L', 9, 0);
sunxi_set_gpio_out('L', 10, 0);
/* Turn off pin controller now. */
mmio_write_32(SUNXI_CCU_BASE + 0x68, 0);
break;
case AXP803_RSB:
/* (Re-)init RSB in case the rich OS has disabled it. */
sunxi_init_platform_r_twi(SUNXI_SOC_A64, true);
rsb_init();
/* Set "power disable control" bit */
axp_setbits(0x32, BIT(7));
break;
default:
break;
}
udelay(1000);
ERROR("PSCI: Cannot turn off system, halting.\n");
wfi();
panic();
}
/*
* The axp221 uses the p2wi bus, the axp223 is identical (for all registers
* used sofar) but uses the rsb bus. These functions abstract this.
*/
static int pmic_bus_init(void)
{
#ifdef CONFIG_MACH_SUN6I
p2wi_init();
return p2wi_change_to_p2wi_mode(AXP221_CHIP_ADDR, AXP221_CTRL_ADDR,
AXP221_INIT_DATA);
#else
int ret;
rsb_init();
ret = rsb_set_device_mode(AXP223_DEVICE_MODE_DATA);
if (ret)
return ret;
return rsb_set_device_address(AXP223_DEVICE_ADDR, AXP223_RUNTIME_ADDR);
#endif
}