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Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/include/asm/arch-tegra/gpio.h15
1 files changed, 9 insertions, 6 deletions
diff --git a/arch/arm/include/asm/arch-tegra/gpio.h b/arch/arm/include/asm/arch-tegra/gpio.h
index 44cd455..7334e0c 100644
--- a/arch/arm/include/asm/arch-tegra/gpio.h
+++ b/arch/arm/include/asm/arch-tegra/gpio.h
@@ -6,6 +6,8 @@
#ifndef _TEGRA_GPIO_H_
#define _TEGRA_GPIO_H_
+#define TEGRA_GPIOS_PER_PORT 8
+#define TEGRA_PORTS_PER_BANK 4
#define MAX_NUM_GPIOS (TEGRA_GPIO_PORTS * TEGRA_GPIO_BANKS * 8)
#define GPIO_NAME_SIZE 20 /* gpio_request max label len */
@@ -25,9 +27,14 @@ struct tegra_gpio_config {
u32 init:2;
};
-/*
- * Tegra-specific GPIO API
+/**
+ * tegra_spl_gpio_direction_output() - set the output value of a GPIO
+ *
+ * This function is only used from SPL on seaboard, which needs to enable a
+ * GPIO to get the UART running. It could be done in U-Boot rather than SPL,
+ * but for now, this gets it working
*/
+int tegra_spl_gpio_direction_output(int gpio, int value);
/**
* Configure a list of GPIOs
@@ -37,8 +44,4 @@ struct tegra_gpio_config {
*/
void gpio_config_table(const struct tegra_gpio_config *config, int len);
-void gpio_info(void);
-
-#define gpio_status() gpio_info()
-
#endif /* TEGRA_GPIO_H_ */