sunxi uses a 2 cell phandle for gpio bindings. Also there are no
seperate nodes for each pin bank.
Add a custom .xlate function to map gpio phandles to the correct
pin bank device. This fixes gpio_request_by_name usage.
Fixes: 7aa974858422 ("dm: sunxi: Modify the GPIO driver to support driver
model")
Signed-off-by: Chen-Yu Tsai <w...@csie.org>
---
drivers/gpio/sunxi_gpio.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/gpio/sunxi_gpio.c b/drivers/gpio/sunxi_gpio.c
index 94abbeb39adc..e8accaa33302 100644
--- a/drivers/gpio/sunxi_gpio.c
+++ b/drivers/gpio/sunxi_gpio.c
@@ -19,6 +19,7 @@
#include <asm/io.h>
#include <asm/gpio.h>
#include <dm/device-internal.h>
+#include <dt-bindings/gpio/gpio.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -215,12 +216,27 @@ static int sunxi_gpio_get_function(struct udevice *dev,
unsigned offset)
return GPIOF_FUNC;
}
+static int sunxi_gpio_xlate(struct udevice *dev, struct gpio_desc *desc,
+ struct fdtdec_phandle_args *args)
+{
+ int ret;
+
+ ret = device_get_child(dev, args->args[0], &desc->dev);
+ if (ret)
+ return ret;
+ desc->offset = args->args[1];
+ desc->flags = args->args[2] & GPIO_ACTIVE_LOW ? GPIOD_ACTIVE_LOW : 0;
+
+ return 0;
+}
+
static const struct dm_gpio_ops gpio_sunxi_ops = {
.direction_input = sunxi_gpio_direction_input,
.direction_output = sunxi_gpio_direction_output,
.get_value = sunxi_gpio_get_value,
.set_value = sunxi_gpio_set_value,
.get_function = sunxi_gpio_get_function,
+ .xlate = sunxi_gpio_xlate,
};
/**
--
2.8.1
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