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https://github.com/edk2-porting/linux-next.git
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eac68e8f97
This patch removes "Enable USB3 LPM Capability" option from Kconfig and adds snps,usb3_lpm_capable devicetree property instead of it. USB3 LPM (Link Power Management) capability is hardware property, and it's platform dependent, so if our hardware supports this feature, we want rather to configure it in devicetree than having it as Kconfig option. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
/**
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* host.c - DesignWare USB3 DRD Controller Host Glue
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com
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*
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* Authors: Felipe Balbi <balbi@ti.com>,
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 of
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* the License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/platform_device.h>
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#include <linux/usb/xhci_pdriver.h>
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#include "core.h"
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int dwc3_host_init(struct dwc3 *dwc)
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{
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struct platform_device *xhci;
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struct usb_xhci_pdata pdata;
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int ret;
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xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);
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if (!xhci) {
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dev_err(dwc->dev, "couldn't allocate xHCI device\n");
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return -ENOMEM;
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}
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dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask);
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xhci->dev.parent = dwc->dev;
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xhci->dev.dma_mask = dwc->dev->dma_mask;
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xhci->dev.dma_parms = dwc->dev->dma_parms;
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dwc->xhci = xhci;
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ret = platform_device_add_resources(xhci, dwc->xhci_resources,
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DWC3_XHCI_RESOURCES_NUM);
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if (ret) {
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dev_err(dwc->dev, "couldn't add resources to xHCI device\n");
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goto err1;
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}
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memset(&pdata, 0, sizeof(pdata));
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pdata.usb3_lpm_capable = dwc->usb3_lpm_capable;
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ret = platform_device_add_data(xhci, &pdata, sizeof(pdata));
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if (ret) {
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dev_err(dwc->dev, "couldn't add platform data to xHCI device\n");
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goto err1;
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}
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phy_create_lookup(dwc->usb2_generic_phy, "usb2-phy",
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dev_name(&xhci->dev));
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phy_create_lookup(dwc->usb3_generic_phy, "usb3-phy",
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dev_name(&xhci->dev));
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ret = platform_device_add(xhci);
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if (ret) {
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dev_err(dwc->dev, "failed to register xHCI device\n");
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goto err2;
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}
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return 0;
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err2:
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phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy",
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dev_name(&xhci->dev));
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phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy",
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dev_name(&xhci->dev));
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err1:
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platform_device_put(xhci);
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return ret;
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}
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void dwc3_host_exit(struct dwc3 *dwc)
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{
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phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy",
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dev_name(&dwc->xhci->dev));
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phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy",
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dev_name(&dwc->xhci->dev));
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platform_device_unregister(dwc->xhci);
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}
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