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Diffstat (limited to 'board/altera/nios2-generic/gpio.c')
-rw-r--r--board/altera/nios2-generic/gpio.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/board/altera/nios2-generic/gpio.c b/board/altera/nios2-generic/gpio.c
index 8c639ce..4a30564 100644
--- a/board/altera/nios2-generic/gpio.c
+++ b/board/altera/nios2-generic/gpio.c
@@ -10,6 +10,7 @@
#ifndef CONFIG_SYS_GPIO_BASE
#define ALTERA_PIO_BASE LED_PIO_BASE
+#define ALTERA_PIO_WIDTH LED_PIO_WIDTH
#define ALTERA_PIO_DATA (ALTERA_PIO_BASE + 0)
#define ALTERA_PIO_DIR (ALTERA_PIO_BASE + 4)
static u32 pio_data_reg;
@@ -62,4 +63,9 @@ void gpio_set_value(unsigned gpio, int value)
pio_data_reg &= ~mask;
writel(pio_data_reg, ALTERA_PIO_DATA);
}
+
+int gpio_is_valid(int number)
+{
+ return ((unsigned)number) < ALTERA_PIO_WIDTH;
+}
#endif