power: axp209: VBUS detection support
Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
diff --git a/drivers/power/axp209.c b/drivers/power/axp209.c
index f8c9b77..29d5464 100644
--- a/drivers/power/axp209.c
+++ b/drivers/power/axp209.c
@@ -7,6 +7,7 @@
#include <common.h>
#include <i2c.h>
+#include <asm/arch/gpio.h>
#include <axp209.h>
enum axp209_reg {
@@ -31,6 +32,7 @@
};
#define AXP209_POWER_STATUS_ON_BY_DC (1 << 0)
+#define AXP209_POWER_STATUS_VBUS_USABLE (1 << 4)
#define AXP209_IRQ5_PEK_UP (1 << 6)
#define AXP209_IRQ5_PEK_DOWN (1 << 5)
@@ -205,6 +207,9 @@
int axp_gpio_direction_input(unsigned int pin)
{
+ if (pin == SUNXI_GPIO_AXP0_VBUS_DETECT)
+ return 0;
+
u8 reg = axp209_get_gpio_ctrl_reg(pin);
/* GPIO3 is "special" */
u8 val = (pin == 3) ? AXP209_GPIO3_INPUT : AXP209_GPIO_INPUT;
@@ -232,7 +237,10 @@
u8 val, mask;
int rc;
- if (pin == 3) {
+ if (pin == SUNXI_GPIO_AXP0_VBUS_DETECT) {
+ rc = axp209_read(AXP209_POWER_STATUS, &val);
+ mask = AXP209_POWER_STATUS_VBUS_USABLE;
+ } else if (pin == 3) {
rc = axp209_read(AXP209_GPIO3_CTRL, &val);
mask = 1;
} else {