gpio: at91_gpio: add the device tree support

Add the device tree support.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andreas Bießmann <andreas@biessmann.org>

diff --git a/drivers/gpio/at91_gpio.c b/drivers/gpio/at91_gpio.c
index 2f9e44b620996a135ed56d685d5f9215f578d077..37955cc99ab0194dbeca70a81b30cb1b9a72c491 100644 (file)
--- a/drivers/gpio/at91_gpio.c
+++ b/drivers/gpio/at91_gpio.c
@@ -572,14 +572,29 @@ static int at91_gpio_probe(struct udevice *dev)
 
        uc_priv->bank_name = plat->bank_name;
        uc_priv->gpio_count = GPIO_PER_BANK;
+
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+       plat->base_addr = (uint32_t)dev_get_addr_ptr(dev);
+#endif
        port->regs = (struct at91_port *)plat->base_addr;
 
        return 0;
 }
 
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+static const struct udevice_id at91_gpio_ids[] = {
+       { .compatible = "atmel,at91rm9200-gpio" },
+       { }
+};
+#endif
+
 U_BOOT_DRIVER(gpio_at91) = {
        .name   = "gpio_at91",
        .id     = UCLASS_GPIO,
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+       .of_match = at91_gpio_ids,
+       .platdata_auto_alloc_size = sizeof(struct at91_port_platdata),
+#endif
        .ops    = &gpio_at91_ops,
        .probe  = at91_gpio_probe,
        .priv_auto_alloc_size = sizeof(struct at91_port_priv),