mirror of
https://github.com/u-boot/u-boot.git
synced 2024-11-29 15:43:44 +08:00
9dcf68fac8
We do not use the axp209 interrupt, and at least in my mini-x (which does not have a power button) the pwr-button pin and the irq pin are soldered together, so if the axp209 keeps it irq asserted too long it will see a 10s pwr-button press and hard power off the board, disabling the irqs fixes this. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
252 lines
5.0 KiB
C
252 lines
5.0 KiB
C
/*
|
|
* (C) Copyright 2012
|
|
* Henrik Nordstrom <henrik@henriknordstrom.net>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <i2c.h>
|
|
#include <axp209.h>
|
|
|
|
enum axp209_reg {
|
|
AXP209_POWER_STATUS = 0x00,
|
|
AXP209_CHIP_VERSION = 0x03,
|
|
AXP209_DCDC2_VOLTAGE = 0x23,
|
|
AXP209_DCDC3_VOLTAGE = 0x27,
|
|
AXP209_LDO24_VOLTAGE = 0x28,
|
|
AXP209_LDO3_VOLTAGE = 0x29,
|
|
AXP209_IRQ_ENABLE1 = 0x40,
|
|
AXP209_IRQ_ENABLE2 = 0x41,
|
|
AXP209_IRQ_ENABLE3 = 0x42,
|
|
AXP209_IRQ_ENABLE4 = 0x43,
|
|
AXP209_IRQ_ENABLE5 = 0x44,
|
|
AXP209_IRQ_STATUS5 = 0x4c,
|
|
AXP209_SHUTDOWN = 0x32,
|
|
AXP209_GPIO0_CTRL = 0x90,
|
|
AXP209_GPIO1_CTRL = 0x92,
|
|
AXP209_GPIO2_CTRL = 0x93,
|
|
AXP209_GPIO_STATE = 0x94,
|
|
AXP209_GPIO3_CTRL = 0x95,
|
|
};
|
|
|
|
#define AXP209_POWER_STATUS_ON_BY_DC (1 << 0)
|
|
|
|
#define AXP209_IRQ5_PEK_UP (1 << 6)
|
|
#define AXP209_IRQ5_PEK_DOWN (1 << 5)
|
|
|
|
#define AXP209_POWEROFF (1 << 7)
|
|
|
|
#define AXP209_GPIO_OUTPUT_LOW 0x00 /* Drive pin low */
|
|
#define AXP209_GPIO_OUTPUT_HIGH 0x01 /* Drive pin high */
|
|
#define AXP209_GPIO_INPUT 0x02 /* Float pin */
|
|
|
|
/* GPIO3 is different from the others */
|
|
#define AXP209_GPIO3_OUTPUT_LOW 0x00 /* Drive pin low, Output mode */
|
|
#define AXP209_GPIO3_OUTPUT_HIGH 0x02 /* Float pin, Output mode */
|
|
#define AXP209_GPIO3_INPUT 0x06 /* Float pin, Input mode */
|
|
|
|
static int axp209_write(enum axp209_reg reg, u8 val)
|
|
{
|
|
return i2c_write(0x34, reg, 1, &val, 1);
|
|
}
|
|
|
|
static int axp209_read(enum axp209_reg reg, u8 *val)
|
|
{
|
|
return i2c_read(0x34, reg, 1, val, 1);
|
|
}
|
|
|
|
static u8 axp209_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 axp209_set_dcdc2(int mvolt)
|
|
{
|
|
int rc;
|
|
u8 cfg, current;
|
|
|
|
cfg = axp209_mvolt_to_cfg(mvolt, 700, 2275, 25);
|
|
|
|
/* Do we really need to be this gentle? It has built-in voltage slope */
|
|
while ((rc = axp209_read(AXP209_DCDC2_VOLTAGE, ¤t)) == 0 &&
|
|
current != cfg) {
|
|
if (current < cfg)
|
|
current++;
|
|
else
|
|
current--;
|
|
|
|
rc = axp209_write(AXP209_DCDC2_VOLTAGE, current);
|
|
if (rc)
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
int axp209_set_dcdc3(int mvolt)
|
|
{
|
|
u8 cfg = axp209_mvolt_to_cfg(mvolt, 700, 3500, 25);
|
|
|
|
return axp209_write(AXP209_DCDC3_VOLTAGE, cfg);
|
|
}
|
|
|
|
int axp209_set_ldo2(int mvolt)
|
|
{
|
|
int rc;
|
|
u8 cfg, reg;
|
|
|
|
cfg = axp209_mvolt_to_cfg(mvolt, 1800, 3300, 100);
|
|
|
|
rc = axp209_read(AXP209_LDO24_VOLTAGE, ®);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/* LDO2 configuration is in upper 4 bits */
|
|
reg = (reg & 0x0f) | (cfg << 4);
|
|
return axp209_write(AXP209_LDO24_VOLTAGE, reg);
|
|
}
|
|
|
|
int axp209_set_ldo3(int mvolt)
|
|
{
|
|
u8 cfg;
|
|
|
|
if (mvolt == -1)
|
|
cfg = 0x80; /* determined by LDO3IN pin */
|
|
else
|
|
cfg = axp209_mvolt_to_cfg(mvolt, 700, 2275, 25);
|
|
|
|
return axp209_write(AXP209_LDO3_VOLTAGE, cfg);
|
|
}
|
|
|
|
int axp209_set_ldo4(int mvolt)
|
|
{
|
|
int rc;
|
|
static const int vindex[] = {
|
|
1250, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000, 2500,
|
|
2700, 2800, 3000, 3100, 3200, 3300
|
|
};
|
|
u8 cfg, reg;
|
|
|
|
/* Translate mvolt to register cfg value, requested <= selected */
|
|
for (cfg = 15; vindex[cfg] > mvolt && cfg > 0; cfg--);
|
|
|
|
rc = axp209_read(AXP209_LDO24_VOLTAGE, ®);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/* LDO4 configuration is in lower 4 bits */
|
|
reg = (reg & 0xf0) | (cfg << 0);
|
|
return axp209_write(AXP209_LDO24_VOLTAGE, reg);
|
|
}
|
|
|
|
int axp209_init(void)
|
|
{
|
|
u8 ver;
|
|
int i, rc;
|
|
|
|
rc = axp209_read(AXP209_CHIP_VERSION, &ver);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/* Low 4 bits is chip version */
|
|
ver &= 0x0f;
|
|
|
|
if (ver != 0x1)
|
|
return -1;
|
|
|
|
/* Mask all interrupts */
|
|
for (i = AXP209_IRQ_ENABLE1; i <= AXP209_IRQ_ENABLE5; i++) {
|
|
rc = axp209_write(i, 0);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int axp209_poweron_by_dc(void)
|
|
{
|
|
u8 v;
|
|
|
|
if (axp209_read(AXP209_POWER_STATUS, &v))
|
|
return 0;
|
|
|
|
return (v & AXP209_POWER_STATUS_ON_BY_DC);
|
|
}
|
|
|
|
int axp209_power_button(void)
|
|
{
|
|
u8 v;
|
|
|
|
if (axp209_read(AXP209_IRQ_STATUS5, &v))
|
|
return 0;
|
|
|
|
axp209_write(AXP209_IRQ_STATUS5, AXP209_IRQ5_PEK_DOWN);
|
|
|
|
return v & AXP209_IRQ5_PEK_DOWN;
|
|
}
|
|
|
|
static u8 axp209_get_gpio_ctrl_reg(unsigned int pin)
|
|
{
|
|
switch (pin) {
|
|
case 0: return AXP209_GPIO0_CTRL;
|
|
case 1: return AXP209_GPIO1_CTRL;
|
|
case 2: return AXP209_GPIO2_CTRL;
|
|
case 3: return AXP209_GPIO3_CTRL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int axp_gpio_direction_input(unsigned int pin)
|
|
{
|
|
u8 reg = axp209_get_gpio_ctrl_reg(pin);
|
|
/* GPIO3 is "special" */
|
|
u8 val = (pin == 3) ? AXP209_GPIO3_INPUT : AXP209_GPIO_INPUT;
|
|
|
|
return axp209_write(reg, val);
|
|
}
|
|
|
|
int axp_gpio_direction_output(unsigned int pin, unsigned int val)
|
|
{
|
|
u8 reg = axp209_get_gpio_ctrl_reg(pin);
|
|
|
|
if (val) {
|
|
val = (pin == 3) ? AXP209_GPIO3_OUTPUT_HIGH :
|
|
AXP209_GPIO_OUTPUT_HIGH;
|
|
} else {
|
|
val = (pin == 3) ? AXP209_GPIO3_OUTPUT_LOW :
|
|
AXP209_GPIO_OUTPUT_LOW;
|
|
}
|
|
|
|
return axp209_write(reg, val);
|
|
}
|
|
|
|
int axp_gpio_get_value(unsigned int pin)
|
|
{
|
|
u8 val, mask;
|
|
int rc;
|
|
|
|
if (pin == 3) {
|
|
rc = axp209_read(AXP209_GPIO3_CTRL, &val);
|
|
mask = 1;
|
|
} else {
|
|
rc = axp209_read(AXP209_GPIO_STATE, &val);
|
|
mask = 1 << (pin + 4);
|
|
}
|
|
if (rc)
|
|
return rc;
|
|
|
|
return (val & mask) ? 1 : 0;
|
|
}
|
|
|
|
int axp_gpio_set_value(unsigned int pin, unsigned int val)
|
|
{
|
|
return axp_gpio_direction_output(pin, val);
|
|
}
|