gpio.h

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#ifndef __NVBIOS_GPIO_H__
#define __NVBIOS_GPIO_H__

struct nouveau_bios;

enum dcb_gpio_func_name {
    DCB_GPIO_PANEL_POWER = 0x01,
    DCB_GPIO_TVDAC0 = 0x0c,
    DCB_GPIO_TVDAC1 = 0x2d,
    DCB_GPIO_PWM_FAN = 0x09,
    DCB_GPIO_FAN_SENSE = 0x3d,
    DCB_GPIO_UNUSED = 0xff
};

struct dcb_gpio_func {
    u8 func;
    u8 line;
    u8 log[2];

    /* so far, "param" seems to only have an influence on PWM-related
     * GPIOs such as FAN_CONTROL and PANEL_BACKLIGHT_LEVEL.
     * if param equals 1, hardware PWM is available
     * if param equals 0, the host should toggle the GPIO itself
     */
    u8 param;
};

u16 dcb_gpio_table(struct nouveau_bios *);
u16 dcb_gpio_entry(struct nouveau_bios *, int idx, int ent, u8 *ver);
int dcb_gpio_parse(struct nouveau_bios *, int idx, u8 func, u8 line,
           struct dcb_gpio_func *);

#endif