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| author | Markus Klotzbuecher <mk@denx.de> | 2008-07-10 10:26:07 +0200 |
|---|---|---|
| committer | Markus Klotzbuecher <mk@denx.de> | 2008-07-10 10:26:07 +0200 |
| commit | 794a5924972fc8073616e98a2668da4a5f9aea90 (patch) | |
| tree | dd0db39b3e183b5bcb0300d5377d7a0d5ac5fd0c /cpu/at32ap/pio.c | |
| parent | f2aeecc320f5b181b30effcaa67683aec8d5a843 (diff) | |
| parent | 4188f0491886b3b486164e819c0a83fdb97efd7d (diff) | |
| download | u-boot-imx-794a5924972fc8073616e98a2668da4a5f9aea90.zip u-boot-imx-794a5924972fc8073616e98a2668da4a5f9aea90.tar.gz u-boot-imx-794a5924972fc8073616e98a2668da4a5f9aea90.tar.bz2 | |
Merge branch 'master' of git://www.denx.de/git/u-boot
Diffstat (limited to 'cpu/at32ap/pio.c')
| -rw-r--r-- | cpu/at32ap/pio.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/cpu/at32ap/pio.c b/cpu/at32ap/pio.c index 9ba0b8e..f64004b 100644 --- a/cpu/at32ap/pio.c +++ b/cpu/at32ap/pio.c @@ -58,3 +58,59 @@ void gpio_select_periph_B(unsigned int pin, int use_pullup) else pio2_writel(base, PUDR, mask); } + +void gpio_select_pio(unsigned int pin, unsigned long gpiof_flags) +{ + void *base = gpio_pin_to_addr(pin); + uint32_t mask = 1 << (pin & 0x1f); + + if (!base) + panic("Invalid GPIO pin %u\n", pin); + + if (gpiof_flags & GPIOF_OUTPUT) { + if (gpiof_flags & GPIOF_MULTIDRV) + pio2_writel(base, MDER, mask); + else + pio2_writel(base, MDDR, mask); + pio2_writel(base, PUDR, mask); + pio2_writel(base, OER, mask); + } else { + if (gpiof_flags & GPIOF_PULLUP) + pio2_writel(base, PUER, mask); + else + pio2_writel(base, PUDR, mask); + if (gpiof_flags & GPIOF_DEGLITCH) + pio2_writel(base, IFER, mask); + else + pio2_writel(base, IFDR, mask); + pio2_writel(base, ODR, mask); + } + + pio2_writel(base, PER, mask); +} + +void gpio_set_value(unsigned int pin, int value) +{ + void *base = gpio_pin_to_addr(pin); + uint32_t mask = 1 << (pin & 0x1f); + + if (!base) + panic("Invalid GPIO pin %u\n", pin); + + if (value) + pio2_writel(base, SODR, mask); + else + pio2_writel(base, CODR, mask); +} + +int gpio_get_value(unsigned int pin) +{ + void *base = gpio_pin_to_addr(pin); + int value; + + if (!base) + panic("Invalid GPIO pin %u\n", pin); + + value = pio2_readl(base, PDSR); + return (value >> (pin & 0x1f)) & 1; +} |