include/linux/platform_data/pxa2xx_udc.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * This supports machine-specific differences in how the PXA2xx
   4  * USB Device Controller (UDC) is wired.
   5  *
   6  * It is set in linux/arch/arm/mach-pxa/<machine>.c or in
   7  * linux/arch/mach-ixp4xx/<machine>.c and used in
   8  * the probe routine of linux/drivers/usb/gadget/pxa2xx_udc.c
   9  */
  10 #ifndef PXA2XX_UDC_H
  11 #define PXA2XX_UDC_H
  12
  13 struct pxa2xx_udc_mach_info {
  14         int  (*udc_is_connected)(void);         /* do we see host? */
  15         void (*udc_command)(int cmd);
  16 #define PXA2XX_UDC_CMD_CONNECT          0       /* let host see us */
  17 #define PXA2XX_UDC_CMD_DISCONNECT       1       /* so host won't see us */
  18
  19         /* Boards following the design guidelines in the developer's manual,
  20          * with on-chip GPIOs not Lubbock's weird hardware, can have a sane
  21          * VBUS IRQ and omit the methods above.  Store the GPIO number
  22          * here.  Note that sometimes the signals go through inverters...
  23          */
  24         bool    gpio_pullup_inverted;
  25         int     gpio_pullup;                    /* high == pullup activated */
  26 };
  27
  28 #endif