Commit 20f6fdd0 authored by Pratyush Anand's avatar Pratyush Anand Committed by Greg Kroah-Hartman
Browse files

xhci: Platform: Set xhci lpm support quirk based on platform data 



If an xhci platform supports USB3 LPM capability then enable
XHCI_LPM_SUPPORT quirk flag.

Signed-off-by: default avatarPratyush Anand <pratyush.anand@st.com>
Signed-off-by: default avatarMathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 94ef3d50

Documentation/devicetree/bindings/usb/usb-xhci.txt

+2 −1
Original line number Diff line number Diff line
@@ -9,8 +9,9 @@ Required properties: 
    register set for the device.

  - interrupts: one XHCI interrupt should be described here.



Optional property:

Optional properties:

  - clocks: reference to a clock

  - usb3-lpm-capable: determines if platform is USB3 LPM capable



Example:

	usb@f0931000 {

drivers/usb/host/xhci-plat.c

+6 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <linux/of.h>

#include <linux/platform_device.h>

#include <linux/slab.h>

#include <linux/usb/xhci_pdriver.h>



#include "xhci.h"

#include "xhci-mvebu.h"
@@ -97,6 +98,8 @@ static const struct hc_driver xhci_plat_xhci_driver = { 


static int xhci_plat_probe(struct platform_device *pdev)

{

	struct device_node	*node = pdev->dev.of_node;

	struct usb_xhci_pdata	*pdata = dev_get_platdata(&pdev->dev);

	const struct hc_driver	*driver;

	struct xhci_hcd		*xhci;

	struct resource         *res;
@@ -185,6 +188,9 @@ static int xhci_plat_probe(struct platform_device *pdev) 
		goto dealloc_usb2_hcd;

	}



	if ((node && of_property_read_bool(node, "usb3-lpm-capable")) ||

			(pdata && pdata->usb3_lpm_capable))

		xhci->quirks |= XHCI_LPM_SUPPORT;

	/*

	 * Set the xHCI pointer before xhci_plat_setup() (aka hcd_driver.reset)

	 * is called by usb_add_hcd().

include/linux/usb/xhci_pdriver.h

0 → 100644
+27 −0
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/*

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 *

 * 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.

 *

 */



#ifndef __USB_CORE_XHCI_PDRIVER_H

#define __USB_CORE_XHCI_PDRIVER_H



/**

 * struct usb_xhci_pdata - platform_data for generic xhci platform driver

 *

 * @usb3_lpm_capable:	determines if this xhci platform supports USB3

 *			LPM capability

 *

 */

struct usb_xhci_pdata {

	unsigned	usb3_lpm_capable:1;

};



#endif /* __USB_CORE_XHCI_PDRIVER_H */