xenon_gpio.c

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#include <xenon_smc/xenon_gpio.h>
#include <pci/io.h>
 
#define SMC_BASE 0xea001000
 
void xenon_gpio_control(uint32_t reg, uint32_t clear, uint32_t set)
{
    int r[]={0x20,0x24,0x28,0x30,0x34,0x38,0x40,0x44,0x48};
    int b = read32(SMC_BASE | r[reg]);
    b &= ~clear;
    b |= set;
    write32(SMC_BASE | r[reg], b);
}
 
void xenon_gpio_set_oe(uint32_t clear, uint32_t set)
{
    write32(SMC_BASE + 0x20, (read32(SMC_BASE + 0x20) &~ clear) | set);
}
 
void xenon_gpio_set(uint32_t clear, uint32_t set)
{
    write32(SMC_BASE + 0x34, (read32(SMC_BASE + 0x34) &~ clear) | set);
}