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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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9cc5639680
The SH USB interface has both OHCI and EHCI modes that share the same interrupt. Flag the OHCI IRQ as shared in preparation for EHCI support. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
143 lines
3.2 KiB
C
143 lines
3.2 KiB
C
/*
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* OHCI HCD (Host Controller Driver) for USB.
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*
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* Copyright (C) 2008 Renesas Solutions Corp.
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*
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* Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.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 as published by
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* the Free Software Foundation; version 2 of the License.
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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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* 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
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <linux/platform_device.h>
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static int ohci_sh_start(struct usb_hcd *hcd)
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{
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struct ohci_hcd *ohci = hcd_to_ohci(hcd);
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ohci_hcd_init(ohci);
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ohci_init(ohci);
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ohci_run(ohci);
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hcd->state = HC_STATE_RUNNING;
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return 0;
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}
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static const struct hc_driver ohci_sh_hc_driver = {
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.description = hcd_name,
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.product_desc = "SuperH OHCI",
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.hcd_priv_size = sizeof(struct ohci_hcd),
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/*
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* generic hardware linkage
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*/
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.irq = ohci_irq,
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.flags = HCD_USB11 | HCD_MEMORY,
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/*
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* basic lifecycle operations
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*/
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.start = ohci_sh_start,
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.stop = ohci_stop,
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.shutdown = ohci_shutdown,
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/*
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* managing i/o requests and associated device resources
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*/
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.urb_enqueue = ohci_urb_enqueue,
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.urb_dequeue = ohci_urb_dequeue,
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.endpoint_disable = ohci_endpoint_disable,
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/*
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* scheduling support
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*/
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.get_frame_number = ohci_get_frame,
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/*
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* root hub support
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*/
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.hub_status_data = ohci_hub_status_data,
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.hub_control = ohci_hub_control,
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#ifdef CONFIG_PM
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.bus_suspend = ohci_bus_suspend,
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.bus_resume = ohci_bus_resume,
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#endif
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.start_port_reset = ohci_start_port_reset,
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};
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/*-------------------------------------------------------------------------*/
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static int ohci_hcd_sh_probe(struct platform_device *pdev)
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{
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struct resource *res = NULL;
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struct usb_hcd *hcd = NULL;
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int irq = -1;
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int ret;
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if (usb_disabled())
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return -ENODEV;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!res) {
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err("platform_get_resource error.");
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return -ENODEV;
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}
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irq = platform_get_irq(pdev, 0);
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if (irq < 0) {
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err("platform_get_irq error.");
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return -ENODEV;
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}
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/* initialize hcd */
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hcd = usb_create_hcd(&ohci_sh_hc_driver, &pdev->dev, (char *)hcd_name);
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if (!hcd) {
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err("Failed to create hcd");
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return -ENOMEM;
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}
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hcd->regs = (void __iomem *)res->start;
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hcd->rsrc_start = res->start;
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hcd->rsrc_len = resource_size(res);
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ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
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if (ret != 0) {
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err("Failed to add hcd");
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usb_put_hcd(hcd);
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return ret;
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}
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return ret;
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}
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static int ohci_hcd_sh_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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usb_put_hcd(hcd);
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return 0;
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}
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static struct platform_driver ohci_hcd_sh_driver = {
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.probe = ohci_hcd_sh_probe,
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.remove = ohci_hcd_sh_remove,
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.shutdown = usb_hcd_platform_shutdown,
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.driver = {
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.name = "sh_ohci",
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.owner = THIS_MODULE,
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},
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};
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MODULE_ALIAS("platform:sh_ohci");
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