[U-Boot] [PATCH 1/4] at91: add new gpio pin definitions

Andreas Bießmann
2013-11-29T11:13:43Z

This patch define new names for GPIO pins on at91 devices. Follow up patches
will convert the whole infrastructure to use these new definitions.

Signed-off-by: Andreas Bie?mann <andreas.devel@googlemail.com>
---
arch/arm/include/asm/arch-at91/gpio.h | 24 +++++++++++++++++++++++-
drivers/gpio/at91_gpio.c | 4 +---
2 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/arch/arm/include/asm/arch-at91/gpio.h b/arch/arm/include/asm/arch-at91/gpio.h
index 0700427..b340afe 100644
--- a/arch/arm/include/asm/arch-at91/gpio.h
+++ b/arch/arm/include/asm/arch-at91/gpio.h
@@ -231,4 +231,26 @@ static inline unsigned pin_to_mask(unsigned pin)
#define at91_set_gpio_value(x, y) at91_set_pio_value(x, y)
#define at91_get_gpio_value(x) at91_get_pio_value(x)
#endif
-#endif
+
+#define GPIO_PIOA_BASE (0)
+#define GPIO_PIOB_BASE (GPIO_PIOA_BASE + 32)
+#define GPIO_PIOC_BASE (GPIO_PIOB_BASE + 32)
+#define GPIO_PIOD_BASE (GPIO_PIOC_BASE + 32)
+#define GPIO_PIOE_BASE (GPIO_PIOD_BASE + 32)
+#define GPIO_PIN_PA(x) (GPIO_PIOA_BASE + (x))
+#define GPIO_PIN_PB(x) (GPIO_PIOB_BASE + (x))
+#define GPIO_PIN_PC(x) (GPIO_PIOC_BASE + (x))
+#define GPIO_PIN_PD(x) (GPIO_PIOD_BASE + (x))
+#define GPIO_PIN_PE(x) (GPIO_PIOE_BASE + (x))
+
+static inline unsigned at91_gpio_to_port(unsigned gpio)
+{
+ return gpio / 32;
+}
+
+static inline unsigned at91_gpio_to_pin(unsigned gpio)
+{
+ return gpio % 32;
+}
+
+#endif /* __ASM_ARCH_AT91_GPIO_H */
diff --git a/drivers/gpio/at91_gpio.c b/drivers/gpio/at91_gpio.c
index af09786..8b76666 100644
--- a/drivers/gpio/at91_gpio.c
+++ b/drivers/gpio/at91_gpio.c
@@ -14,6 +14,7 @@
#include <asm/sizes.h>
#include <asm/arch/hardware.h>
#include <asm/arch/at91_pio.h>
+#include <asm/arch/gpio.h>

static struct at91_port *at91_pio_get_port(unsigned port)
{
@@ -356,9 +357,6 @@ int at91_get_pio_value(unsigned port, unsigned pin)

/* Common GPIO API */

-#define at91_gpio_to_port(gpio) (gpio / 32)
-#define at91_gpio_to_pin(gpio) (gpio % 32)
-
int gpio_request(unsigned gpio, const char *label)
{
return 0;
--
1.7.10.4