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| author | Thomas Chou <thomas@wytron.com.tw> | 2010-12-27 10:46:01 +0800 |
|---|---|---|
| committer | Scott McNutt <smcnutt@psyent.com> | 2011-02-08 08:29:53 -0500 |
| commit | d8a593c68bac7b9d9b26af6fa8c392671213ce93 (patch) | |
| tree | 837a43ae4ef7ac2e87c1facbb480ca8d5ba21656 /board/altera/nios2-generic/gpio.c | |
| parent | 85debefaf2d3d0dea800fa84bfe0e9823bc03d89 (diff) | |
| download | u-boot-imx-d8a593c68bac7b9d9b26af6fa8c392671213ce93.zip u-boot-imx-d8a593c68bac7b9d9b26af6fa8c392671213ce93.tar.gz u-boot-imx-d8a593c68bac7b9d9b26af6fa8c392671213ce93.tar.bz2 | |
nios2: add gpio_is_valid
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Scott McNutt <smcnutt@psyent.com>
Diffstat (limited to 'board/altera/nios2-generic/gpio.c')
| -rw-r--r-- | board/altera/nios2-generic/gpio.c | 6 |
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 |