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3c9740a117
Individual controller driver has different requirement for wakeup setting, so move it from core to itself. In order to align with current etting the default wakeup setting is enabled (except for chipidea host). Pass compile test with below commands: make O=outout/all allmodconfig make -j$CPU_NUM O=outout/all drivers/usb Signed-off-by: Peter Chen <peter.chen@freescale.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
164 lines
4.1 KiB
C
164 lines
4.1 KiB
C
/*
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* Generic UHCI HCD (Host Controller Driver) for Platform Devices
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*
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* Copyright (c) 2011 Tony Prisk <linux@prisktech.co.nz>
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*
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* This file is based on uhci-grlib.c
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* (C) Copyright 2004-2007 Alan Stern, stern@rowland.harvard.edu
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*/
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#include <linux/of.h>
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#include <linux/platform_device.h>
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static int uhci_platform_init(struct usb_hcd *hcd)
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{
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struct uhci_hcd *uhci = hcd_to_uhci(hcd);
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uhci->rh_numports = uhci_count_ports(hcd);
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/* Set up pointers to to generic functions */
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uhci->reset_hc = uhci_generic_reset_hc;
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uhci->check_and_reset_hc = uhci_generic_check_and_reset_hc;
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/* No special actions need to be taken for the functions below */
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uhci->configure_hc = NULL;
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uhci->resume_detect_interrupts_are_broken = NULL;
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uhci->global_suspend_mode_is_broken = NULL;
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/* Reset if the controller isn't already safely quiescent. */
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check_and_reset_hc(uhci);
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return 0;
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}
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static const struct hc_driver uhci_platform_hc_driver = {
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.description = hcd_name,
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.product_desc = "Generic UHCI Host Controller",
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.hcd_priv_size = sizeof(struct uhci_hcd),
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/* Generic hardware linkage */
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.irq = uhci_irq,
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.flags = HCD_MEMORY | HCD_USB11,
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/* Basic lifecycle operations */
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.reset = uhci_platform_init,
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.start = uhci_start,
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#ifdef CONFIG_PM
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.pci_suspend = NULL,
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.pci_resume = NULL,
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.bus_suspend = uhci_rh_suspend,
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.bus_resume = uhci_rh_resume,
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#endif
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.stop = uhci_stop,
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.urb_enqueue = uhci_urb_enqueue,
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.urb_dequeue = uhci_urb_dequeue,
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.endpoint_disable = uhci_hcd_endpoint_disable,
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.get_frame_number = uhci_hcd_get_frame_number,
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.hub_status_data = uhci_hub_status_data,
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.hub_control = uhci_hub_control,
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};
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static int uhci_hcd_platform_probe(struct platform_device *pdev)
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{
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struct usb_hcd *hcd;
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struct uhci_hcd *uhci;
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struct resource *res;
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int ret;
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if (usb_disabled())
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return -ENODEV;
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/*
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* Right now device-tree probed devices don't get dma_mask set.
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* Since shared usb code relies on it, set it here for now.
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* Once we have dma capability bindings this can go away.
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*/
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ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
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if (ret)
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return ret;
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hcd = usb_create_hcd(&uhci_platform_hc_driver, &pdev->dev,
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pdev->name);
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if (!hcd)
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return -ENOMEM;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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hcd->rsrc_start = res->start;
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hcd->rsrc_len = resource_size(res);
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if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
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pr_err("%s: request_mem_region failed\n", __func__);
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ret = -EBUSY;
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goto err_rmr;
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}
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hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
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if (!hcd->regs) {
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pr_err("%s: ioremap failed\n", __func__);
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ret = -ENOMEM;
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goto err_irq;
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}
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uhci = hcd_to_uhci(hcd);
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uhci->regs = hcd->regs;
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ret = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_SHARED);
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if (ret)
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goto err_uhci;
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device_wakeup_enable(hcd->self.controller);
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return 0;
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err_uhci:
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iounmap(hcd->regs);
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err_irq:
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release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
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err_rmr:
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usb_put_hcd(hcd);
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return ret;
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}
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static int uhci_hcd_platform_remove(struct platform_device *pdev)
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{
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struct usb_hcd *hcd = platform_get_drvdata(pdev);
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usb_remove_hcd(hcd);
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iounmap(hcd->regs);
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release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
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usb_put_hcd(hcd);
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return 0;
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}
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/* Make sure the controller is quiescent and that we're not using it
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* any more. This is mainly for the benefit of programs which, like kexec,
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* expect the hardware to be idle: not doing DMA or generating IRQs.
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*
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* This routine may be called in a damaged or failing kernel. Hence we
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* do not acquire the spinlock before shutting down the controller.
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*/
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static void uhci_hcd_platform_shutdown(struct platform_device *op)
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{
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struct usb_hcd *hcd = platform_get_drvdata(op);
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uhci_hc_died(hcd_to_uhci(hcd));
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}
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static const struct of_device_id platform_uhci_ids[] = {
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{ .compatible = "platform-uhci", },
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{}
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};
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static struct platform_driver uhci_platform_driver = {
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.probe = uhci_hcd_platform_probe,
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.remove = uhci_hcd_platform_remove,
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.shutdown = uhci_hcd_platform_shutdown,
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.driver = {
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.name = "platform-uhci",
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.owner = THIS_MODULE,
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.of_match_table = platform_uhci_ids,
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},
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};
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