udc_pxa2xx.h

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/*
 * arch/arm/include/asm/mach/udc_pxa2xx.h
 *
 * This supports machine-specific differences in how the PXA2xx
 * USB Device Controller (UDC) is wired.
 *
 * It is set in linux/arch/arm/mach-pxa/<machine>.c or in
 * linux/arch/mach-ixp4xx/<machine>.c and used in
 * the probe routine of linux/drivers/usb/gadget/pxa2xx_udc.c
 */

struct pxa2xx_udc_mach_info {
        int  (*udc_is_connected)(void);     /* do we see host? */
        void (*udc_command)(int cmd);
#define PXA2XX_UDC_CMD_CONNECT      0   /* let host see us */
#define PXA2XX_UDC_CMD_DISCONNECT   1   /* so host won't see us */

    /* Boards following the design guidelines in the developer's manual,
     * with on-chip GPIOs not Lubbock's weird hardware, can have a sane
     * VBUS IRQ and omit the methods above.  Store the GPIO number
     * here.  Note that sometimes the signals go through inverters...
     */
    bool    gpio_pullup_inverted;
    int gpio_pullup;            /* high == pullup activated */
};