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// SPDX-License-Identifier: GPL-2.0+
* Copyright (C) 2012 Hauke Mehrtens <>
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
struct platform_device;
struct usb_hcd;
* struct usb_ehci_pdata - platform_data for generic ehci driver
* @caps_offset: offset of the EHCI Capability Registers to the start of
* the io memory region provided to the driver.
* @has_tt: set to 1 if TT is integrated in root hub.
* @port_power_on: set to 1 if the controller needs a power up after
* initialization.
* @port_power_off: set to 1 if the controller needs to be powered down
* after initialization.
* @no_io_watchdog: set to 1 if the controller does not need the I/O
* watchdog to run.
* @reset_on_resume: set to 1 if the controller needs to be reset after
* a suspend / resume cycle (but can't detect that itself).
* These are general configuration options for the EHCI controller. All of
* these options are activating more or less workarounds for some hardware.
struct usb_ehci_pdata {
int caps_offset;
unsigned has_tt:1;
unsigned has_synopsys_hc_bug:1;
unsigned big_endian_desc:1;
unsigned big_endian_mmio:1;
unsigned no_io_watchdog:1;
unsigned reset_on_resume:1;
unsigned dma_mask_64:1;
unsigned spurious_oc:1;
/* Turn on all power and clocks */
int (*power_on)(struct platform_device *pdev);
/* Turn off all power and clocks */
void (*power_off)(struct platform_device *pdev);
/* Turn on only VBUS suspend power and hotplug detection,
* turn off everything else */
void (*power_suspend)(struct platform_device *pdev);
int (*pre_setup)(struct usb_hcd *hcd);
#endif /* __USB_CORE_EHCI_PDRIVER_H */