gpio.h

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#ifndef P_GPIO_H
#define P_GPIO_H
 
#include <peripherals/base.h>
 
typedef enum {
        GF_INPUT  = 0, 
        GF_OUTPUT = 1, 
        GF_ALT_0  = 4, 
        GF_ALT_1  = 5, 
        GF_ALT_2  = 6, 
        GF_ALT_3  = 7, 
        GF_ALT_4  = 3, 
        GF_ALT_5  = 2, 
} gpio_func;
 
enum
{
        GPIO_BASE = (MMIO_BASE + 0x200000),
 
        GPFSEL0 = (GPIO_BASE + 0x00), 
        GPFSEL1 = (GPIO_BASE + 0x04), 
        GPFSEL2 = (GPIO_BASE + 0x08), 
        GPFSEL3 = (GPIO_BASE + 0x0C), 
        GPFSEL4 = (GPIO_BASE + 0x10), 
        GPFSEL5 = (GPIO_BASE + 0x14), 
        GPSET0 = (GPIO_BASE + 0x1C), 
        GPSET1 = (GPIO_BASE + 0x20), 
        GPCLR0 = (GPIO_BASE + 0x28), 
        GPCLR1 = (GPIO_BASE + 0x2C), 
        GPLEV0 = (GPIO_BASE + 0x34), 
        GPLEV1 = (GPIO_BASE + 0x38), 
        GPEDS0 = (GPIO_BASE + 0x40), 
        GPEDS1 = (GPIO_BASE + 0x44), 
        GPREN0 = (GPIO_BASE + 0x4C), 
        GPREN1 = (GPIO_BASE + 0x50), 
        GPFEN0 = (GPIO_BASE + 0x58), 
        GPFEN1 = (GPIO_BASE + 0x5C), 
        GPHEN0 = (GPIO_BASE + 0x64), 
        GPHEN1 = (GPIO_BASE + 0x68), 
        GPLEN0 = (GPIO_BASE + 0x70), 
        GPLEN1 = (GPIO_BASE + 0x74), 
        GPAREN0 = (GPIO_BASE + 0x7C), 
        GPAREN1 = (GPIO_BASE + 0x80), 
        GPAFEN0 = (GPIO_BASE + 0x88), 
        GPAFEN1 = (GPIO_BASE + 0x8C), 
#if defined(MODEL_0) || defined(MODEL_2) || defined(MODEL_3)
        /* Broadcom 2835, 2836, 2837 specific GPIO registers */
        GPPUD = (GPIO_BASE + 0x94),
        /*
         * GPIO Pin Pull-up/down Enable Clocks 0,1
         * Controls actuation of pull up/down for specific GPIO pins
         */
        GPPUDCLK0 = (GPIO_BASE + 0x98), 
        GPPUDCLK1 = (GPIO_BASE + 0x9C)  
#elif defined(MODEL_4)
        /* Broadcom 2711 specific GPIO registers */
        /*
         * GPIO Pull-up / Pull-down Registers 0,1,2,3
         * Controls the actuation of the internal pull-up/down resistors.
         * Reading these registers gives the current pull-state.
         */
        GPIO_PUP_PDN_CNTRL_REG0 = (GPIO_BASE + 0xE4), 
        GPIO_PUP_PDN_CNTRL_REG1 = (GPIO_BASE + 0xE8), 
        GPIO_PUP_PDN_CNTRL_REG2 = (GPIO_BASE + 0xEC), 
        GPIO_PUP_PDN_CNTRL_REG3 = (GPIO_BASE + 0xF0)  
#endif
};
 
#endif