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| author | David S. Miller <davem@davemloft.net> | 2009-03-29 01:40:34 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-03-29 01:40:34 -0700 |
| commit | 13223cb02ccfa375f2d683d08d30db5b72264f1e (patch) | |
| tree | d3fc7d803d22bbfe03b96cf0ba38041d42c8a1c2 /arch/arm/mach-pxa/generic.c | |
| parent | 1383bdb98c01bbd28d72336d1bf614ce79114d29 (diff) | |
| parent | 07d43ba98621f08e252a48c96b258b4d572b0257 (diff) | |
| download | lwn-13223cb02ccfa375f2d683d08d30db5b72264f1e.tar.gz lwn-13223cb02ccfa375f2d683d08d30db5b72264f1e.zip | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Diffstat (limited to 'arch/arm/mach-pxa/generic.c')
| -rw-r--r-- | arch/arm/mach-pxa/generic.c | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c index 0ccc91c92c44..3126a35aa002 100644 --- a/arch/arm/mach-pxa/generic.c +++ b/arch/arm/mach-pxa/generic.c @@ -26,8 +26,9 @@ #include <asm/mach/map.h> #include <asm/mach-types.h> -#include <mach/pxa-regs.h> #include <mach/reset.h> +#include <mach/gpio.h> +#include <mach/pxa2xx-gpio.h> #include "generic.h" @@ -127,3 +128,33 @@ void __init pxa_map_io(void) iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc)); get_clk_frequency_khz(1); } + +/* + * Configure pins for GPIO or other functions + */ +int pxa_gpio_mode(int gpio_mode) +{ + unsigned long flags; + int gpio = gpio_mode & GPIO_MD_MASK_NR; + int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8; + int gafr; + + if (gpio > pxa_last_gpio) + return -EINVAL; + + local_irq_save(flags); + if (gpio_mode & GPIO_DFLT_LOW) + GPCR(gpio) = GPIO_bit(gpio); + else if (gpio_mode & GPIO_DFLT_HIGH) + GPSR(gpio) = GPIO_bit(gpio); + if (gpio_mode & GPIO_MD_MASK_DIR) + GPDR(gpio) |= GPIO_bit(gpio); + else + GPDR(gpio) &= ~GPIO_bit(gpio); + gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2)); + GAFR(gpio) = gafr | (fn << (((gpio) & 0xf)*2)); + local_irq_restore(flags); + + return 0; +} +EXPORT_SYMBOL(pxa_gpio_mode); |