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path: root/drivers/power/axp221.c
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Diffstat (limited to 'drivers/power/axp221.c')
-rw-r--r--drivers/power/axp221.c75
1 files changed, 44 insertions, 31 deletions
diff --git a/drivers/power/axp221.c b/drivers/power/axp221.c
index c2c3988804..dc3a7f19bd 100644
--- a/drivers/power/axp221.c
+++ b/drivers/power/axp221.c
@@ -14,6 +14,7 @@
#include <errno.h>
#include <asm/arch/p2wi.h>
#include <asm/arch/rsb.h>
+#include <asm/arch/gpio.h>
#include <axp221.h>
/*
@@ -385,54 +386,66 @@ int axp221_get_sid(unsigned int *sid)
return 0;
}
-int axp_get_vbus(void)
+int axp_gpio_direction_input(unsigned int pin)
{
- int ret;
- u8 val;
-
- ret = axp221_init();
- if (ret)
- return ret;
-
- ret = pmic_bus_read(AXP221_POWER_STATUS, &val);
- if (ret)
- return ret;
-
- return (val & AXP221_POWER_STATUS_VBUS_USABLE) ? 1 : 0;
+ switch (pin) {
+ case SUNXI_GPIO_AXP0_VBUS_DETECT:
+ return 0;
+ default:
+ return -EINVAL;
+ }
}
-static int axp_drivebus_setup(void)
+int axp_gpio_direction_output(unsigned int pin, unsigned int val)
{
int ret;
- ret = axp221_init();
- if (ret)
- return ret;
+ switch (pin) {
+ case SUNXI_GPIO_AXP0_VBUS_ENABLE:
+ ret = axp221_clrbits(AXP221_MISC_CTRL,
+ AXP221_MISC_CTRL_N_VBUSEN_FUNC);
+ if (ret)
+ return ret;
- /* Set N_VBUSEN pin to output / DRIVEBUS function */
- return axp221_clrbits(AXP221_MISC_CTRL, AXP221_MISC_CTRL_N_VBUSEN_FUNC);
+ return axp_gpio_set_value(pin, val);
+ default:
+ return -EINVAL;
+ }
}
-int axp_drivebus_enable(void)
+int axp_gpio_get_value(unsigned int pin)
{
int ret;
+ u8 val;
- ret = axp_drivebus_setup();
- if (ret)
- return ret;
+ switch (pin) {
+ case SUNXI_GPIO_AXP0_VBUS_DETECT:
+ ret = pmic_bus_read(AXP221_POWER_STATUS, &val);
+ if (ret)
+ return ret;
- /* Set DRIVEBUS high */
- return axp221_setbits(AXP221_VBUS_IPSOUT, AXP221_VBUS_IPSOUT_DRIVEBUS);
+ return !!(val & AXP221_POWER_STATUS_VBUS_AVAIL);
+ default:
+ return -EINVAL;
+ }
}
-int axp_drivebus_disable(void)
+int axp_gpio_set_value(unsigned int pin, unsigned int val)
{
int ret;
- ret = axp_drivebus_setup();
- if (ret)
- return ret;
+ switch (pin) {
+ case SUNXI_GPIO_AXP0_VBUS_ENABLE:
+ if (val)
+ ret = axp221_setbits(AXP221_VBUS_IPSOUT,
+ AXP221_VBUS_IPSOUT_DRIVEBUS);
+ else
+ ret = axp221_clrbits(AXP221_VBUS_IPSOUT,
+ AXP221_VBUS_IPSOUT_DRIVEBUS);
- /* Set DRIVEBUS low */
- return axp221_clrbits(AXP221_VBUS_IPSOUT, AXP221_VBUS_IPSOUT_DRIVEBUS);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
}
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