gpio: at91_gpio: Add bank names

Make the at91_gpio driver set sensible GPIO bank names in the platform
data. This makes the 'gpio status' command a lot more useful.

Signed-off-by: James Byrne <james.byrne@origamienergy.com>
Reviewed-by: Eugen Hristev <eugen.hristev@microchip.com>

diff --git a/drivers/gpio/at91_gpio.c b/drivers/gpio/at91_gpio.c
index 965becf77ab3c2fcdcde2531aea4271428257ed5..dbfed72c61024ca7216daf0aac109bd0e1a760b5 100644 (file)
--- a/drivers/gpio/at91_gpio.c
+++ b/drivers/gpio/at91_gpio.c
@@ -556,6 +556,28 @@ static int at91_gpio_get_function(struct udevice *dev, unsigned offset)
                return GPIOF_INPUT;
 }
 
+static const char *at91_get_bank_name(uint32_t base_addr)
+{
+       switch (base_addr) {
+       case ATMEL_BASE_PIOA:
+               return "PIOA";
+       case ATMEL_BASE_PIOB:
+               return "PIOB";
+       case ATMEL_BASE_PIOC:
+               return "PIOC";
+#if (ATMEL_PIO_PORTS > 3)
+       case ATMEL_BASE_PIOD:
+               return "PIOD";
+#if (ATMEL_PIO_PORTS > 4)
+       case ATMEL_BASE_PIOE:
+               return "PIOE";
+#endif
+#endif
+       }
+
+       return "undefined";
+}
+
 static const struct dm_gpio_ops gpio_at91_ops = {
        .direction_input        = at91_gpio_direction_input,
        .direction_output       = at91_gpio_direction_output,
@@ -582,14 +604,15 @@ static int at91_gpio_probe(struct udevice *dev)
 
        clk_free(&clk);
 
-       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)devfdt_get_addr_ptr(dev);
 #endif
+       plat->bank_name = at91_get_bank_name(plat->base_addr);
        port->regs = (struct at91_port *)plat->base_addr;
 
+       uc_priv->bank_name = plat->bank_name;
+       uc_priv->gpio_count = GPIO_PER_BANK;
+
        return 0;
 }