include/linux/usb/ehci_pdriver.h

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2012 Hauke Mehrtens <hauke@hauke-m.de>
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by the
   7  * Free Software Foundation; either version 2 of the License, or (at your
   8  * option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  12  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software Foundation,
  17  * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19
  20 #ifndef __USB_CORE_EHCI_PDRIVER_H
  21 #define __USB_CORE_EHCI_PDRIVER_H
  22
  23 struct platform_device;
  24 struct usb_hcd;
  25
  26 /**
  27  * struct usb_ehci_pdata - platform_data for generic ehci driver
  28  *
  29  * @caps_offset:        offset of the EHCI Capability Registers to the start of
  30  *                      the io memory region provided to the driver.
  31  * @has_tt:             set to 1 if TT is integrated in root hub.
  32  * @port_power_on:      set to 1 if the controller needs a power up after
  33  *                      initialization.
  34  * @port_power_off:     set to 1 if the controller needs to be powered down
  35  *                      after initialization.
  36  * @no_io_watchdog:     set to 1 if the controller does not need the I/O
  37  *                      watchdog to run.
  38  * @reset_on_resume:    set to 1 if the controller needs to be reset after
  39  *                      a suspend / resume cycle (but can't detect that itself).
  40  *
  41  * These are general configuration options for the EHCI controller. All of
  42  * these options are activating more or less workarounds for some hardware.
  43  */
  44 struct usb_ehci_pdata {
  45         int             caps_offset;
  46         unsigned        has_tt:1;
  47         unsigned        has_synopsys_hc_bug:1;
  48         unsigned        big_endian_desc:1;
  49         unsigned        big_endian_mmio:1;
  50         unsigned        no_io_watchdog:1;
  51         unsigned        reset_on_resume:1;
  52         unsigned        dma_mask_64:1;
  53
  54         /* Turn on all power and clocks */
  55         int (*power_on)(struct platform_device *pdev);
  56         /* Turn off all power and clocks */
  57         void (*power_off)(struct platform_device *pdev);
  58         /* Turn on only VBUS suspend power and hotplug detection,
  59          * turn off everything else */
  60         void (*power_suspend)(struct platform_device *pdev);
  61         int (*pre_setup)(struct usb_hcd *hcd);
  62 };
  63
  64 #endif /* __USB_CORE_EHCI_PDRIVER_H */