+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2015 Hans de Goede <hdegoede@redhat.com>
*
* X-Powers AXP Power Management ICs gpio driver
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/arch/gpio.h>
#include <asm/arch/pmic_bus.h>
+#include <asm/gpio.h>
+#include <axp_pmic.h>
+#include <dm.h>
+#include <dm/device-internal.h>
+#include <dm/lists.h>
+#include <dm/root.h>
#include <errno.h>
-#ifdef CONFIG_AXP152_POWER
-#include <axp152.h>
-#elif defined CONFIG_AXP209_POWER
-#include <axp209.h>
-#elif defined CONFIG_AXP221_POWER
-#include <axp221.h>
-#else
-#error Unknown AXP model
-#endif
+static int axp_gpio_set_value(struct udevice *dev, unsigned pin, int val);
static u8 axp_get_gpio_ctrl_reg(unsigned pin)
{
return 0;
}
-int axp_gpio_direction_input(struct udevice *dev, unsigned pin)
+static int axp_gpio_direction_input(struct udevice *dev, unsigned pin)
{
u8 reg;
}
}
-int axp_gpio_direction_output(struct udevice *dev, unsigned pin, int val)
+static int axp_gpio_direction_output(struct udevice *dev, unsigned pin,
+ int val)
{
__maybe_unused int ret;
u8 reg;
switch (pin) {
-#ifdef CONFIG_AXP221_POWER /* Only available on axp221/axp223 */
+#ifdef AXP_MISC_CTRL_N_VBUSEN_FUNC
+ /* Only available on later PMICs */
case SUNXI_GPIO_AXP0_VBUS_ENABLE:
- ret = pmic_bus_clrbits(AXP221_MISC_CTRL,
- AXP221_MISC_CTRL_N_VBUSEN_FUNC);
+ ret = pmic_bus_clrbits(AXP_MISC_CTRL,
+ AXP_MISC_CTRL_N_VBUSEN_FUNC);
if (ret)
return ret;
}
}
-int axp_gpio_get_value(struct udevice *dev, unsigned pin)
+static int axp_gpio_get_value(struct udevice *dev, unsigned pin)
{
u8 reg, val, mask;
int ret;
mask = AXP_POWER_STATUS_VBUS_PRESENT;
break;
#endif
-#ifdef CONFIG_AXP221_POWER /* Only available on axp221/axp223 */
+#ifdef AXP_MISC_CTRL_N_VBUSEN_FUNC
+ /* Only available on later PMICs */
case SUNXI_GPIO_AXP0_VBUS_ENABLE:
- ret = pmic_bus_read(AXP221_VBUS_IPSOUT, &val);
- mask = AXP221_VBUS_IPSOUT_DRIVEBUS;
+ ret = pmic_bus_read(AXP_VBUS_IPSOUT, &val);
+ mask = AXP_VBUS_IPSOUT_DRIVEBUS;
break;
#endif
default:
return (val & mask) ? 1 : 0;
}
-int axp_gpio_set_value(struct udevice *dev, unsigned pin, int val)
+static int axp_gpio_set_value(struct udevice *dev, unsigned pin, int val)
{
u8 reg;
switch (pin) {
-#ifdef CONFIG_AXP221_POWER /* Only available on axp221/axp223 */
+#ifdef AXP_MISC_CTRL_N_VBUSEN_FUNC
+ /* Only available on later PMICs */
case SUNXI_GPIO_AXP0_VBUS_ENABLE:
if (val)
- return pmic_bus_setbits(AXP221_VBUS_IPSOUT,
- AXP221_VBUS_IPSOUT_DRIVEBUS);
+ return pmic_bus_setbits(AXP_VBUS_IPSOUT,
+ AXP_VBUS_IPSOUT_DRIVEBUS);
else
- return pmic_bus_clrbits(AXP221_VBUS_IPSOUT,
- AXP221_VBUS_IPSOUT_DRIVEBUS);
+ return pmic_bus_clrbits(AXP_VBUS_IPSOUT,
+ AXP_VBUS_IPSOUT_DRIVEBUS);
#endif
default:
reg = axp_get_gpio_ctrl_reg(pin);
}
}
+static const struct dm_gpio_ops gpio_axp_ops = {
+ .direction_input = axp_gpio_direction_input,
+ .direction_output = axp_gpio_direction_output,
+ .get_value = axp_gpio_get_value,
+ .set_value = axp_gpio_set_value,
+};
+
+static int gpio_axp_probe(struct udevice *dev)
+{
+ struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
+
+ /* Tell the uclass how many GPIOs we have */
+ uc_priv->bank_name = strdup(SUNXI_GPIO_AXP0_PREFIX);
+ uc_priv->gpio_count = SUNXI_GPIO_AXP0_GPIO_COUNT;
+
+ return 0;
+}
+
+U_BOOT_DRIVER(gpio_axp) = {
+ .name = "gpio_axp",
+ .id = UCLASS_GPIO,
+ .ops = &gpio_axp_ops,
+ .probe = gpio_axp_probe,
+};
+
int axp_gpio_init(void)
{
+ struct udevice *dev;
int ret;
ret = pmic_bus_init();
if (ret)
return ret;
+ /* There is no devicetree support for the axp yet, so bind directly */
+ ret = device_bind_driver(dm_root(), "gpio_axp", "AXP-gpio", &dev);
+ if (ret)
+ return ret;
+
return 0;
}