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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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743fcce0a8
Sometimes there is a need to initialize some non-standard registers mapped to the EHCI region before accessing the standard EHCI registers. Add pre_setup() method with 'struct usb_hcd *' parameter to be called just before ehci_setup() to the 'ehci-platform' driver's platform data for this purpose... While at it, add the missing incomplete declaration of 'struct platform_device' to <linux/usb/ehci_pdriver.h>... The patch has been tested on the Marzen and BOCK-W boards. Suggested-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
/*
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* Copyright (C) 2012 Hauke Mehrtens <hauke@hauke-m.de>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __USB_CORE_EHCI_PDRIVER_H
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#define __USB_CORE_EHCI_PDRIVER_H
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struct platform_device;
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struct usb_hcd;
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/**
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* struct usb_ehci_pdata - platform_data for generic ehci driver
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*
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* @caps_offset: offset of the EHCI Capability Registers to the start of
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* the io memory region provided to the driver.
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* @has_tt: set to 1 if TT is integrated in root hub.
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* @port_power_on: set to 1 if the controller needs a power up after
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* initialization.
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* @port_power_off: set to 1 if the controller needs to be powered down
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* after initialization.
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* @no_io_watchdog: set to 1 if the controller does not need the I/O
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* watchdog to run.
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*
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* These are general configuration options for the EHCI controller. All of
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* these options are activating more or less workarounds for some hardware.
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*/
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struct usb_ehci_pdata {
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int caps_offset;
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unsigned has_tt:1;
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unsigned has_synopsys_hc_bug:1;
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unsigned big_endian_desc:1;
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unsigned big_endian_mmio:1;
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unsigned no_io_watchdog:1;
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/* Turn on all power and clocks */
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int (*power_on)(struct platform_device *pdev);
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/* Turn off all power and clocks */
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void (*power_off)(struct platform_device *pdev);
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/* Turn on only VBUS suspend power and hotplug detection,
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* turn off everything else */
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void (*power_suspend)(struct platform_device *pdev);
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int (*pre_setup)(struct usb_hcd *hcd);
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};
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#endif /* __USB_CORE_EHCI_PDRIVER_H */
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