USB: add support for SuperH OHCI (828d55c5) · Commits · EulixOS / Software / Kernel

drivers/usb/Kconfig

+4 −0

Original line number	Diff line number	Diff line
		@@ -42,6 +42,10 @@ config USB_ARCH_HAS_OHCI
		default y if PPC_MPC52xx
		# MIPS:
		default y if SOC_AU1X00
		# SH:
		default y if CPU_SUBTYPE_SH7720
		default y if CPU_SUBTYPE_SH7721
		default y if CPU_SUBTYPE_SH7763
		# more:
		default PCI

drivers/usb/host/ohci-hcd.c

+7 −0

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		@@ -1029,6 +1029,13 @@ MODULE_LICENSE ("GPL");
		#define PLATFORM_DRIVER usb_hcd_pnx4008_driver
		#endif

		#if defined(CONFIG_CPU_SUBTYPE_SH7720) \|\| \
		defined(CONFIG_CPU_SUBTYPE_SH7721) \|\| \
		defined(CONFIG_CPU_SUBTYPE_SH7763)
		#include "ohci-sh.c"
		#define PLATFORM_DRIVER ohci_hcd_sh_driver
		#endif


		#ifdef CONFIG_USB_OHCI_HCD_PPC_OF
		#include "ohci-ppc-of.c"

drivers/usb/host/ohci-sh.c

0 → 100644

+143 −0

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		/*
		* OHCI HCD (Host Controller Driver) for USB.
		*
		* Copyright (C) 2008 Renesas Solutions Corp.
		*
		* Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License as published by
		* the Free Software Foundation; version 2 of the License.
		*
		* 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.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, write to the Free Software
		* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
		*
		*/

		#include <linux/platform_device.h>

		static int ohci_sh_start(struct usb_hcd *hcd)
		{
		struct ohci_hcd *ohci = hcd_to_ohci(hcd);

		ohci_hcd_init(ohci);
		ohci_init(ohci);
		ohci_run(ohci);
		hcd->state = HC_STATE_RUNNING;
		return 0;
		}

		static const struct hc_driver ohci_sh_hc_driver = {
		.description = hcd_name,
		.product_desc = "SuperH OHCI",
		.hcd_priv_size = sizeof(struct ohci_hcd),

		/*
		* generic hardware linkage
		*/
		.irq = ohci_irq,
		.flags = HCD_USB11 \| HCD_MEMORY,

		/*
		* basic lifecycle operations
		*/
		.start = ohci_sh_start,
		.stop = ohci_stop,
		.shutdown = ohci_shutdown,

		/*
		* managing i/o requests and associated device resources
		*/
		.urb_enqueue = ohci_urb_enqueue,
		.urb_dequeue = ohci_urb_dequeue,
		.endpoint_disable = ohci_endpoint_disable,

		/*
		* scheduling support
		*/
		.get_frame_number = ohci_get_frame,

		/*
		* root hub support
		*/
		.hub_status_data = ohci_hub_status_data,
		.hub_control = ohci_hub_control,
		.hub_irq_enable = ohci_rhsc_enable,
		#ifdef CONFIG_PM
		.bus_suspend = ohci_bus_suspend,
		.bus_resume = ohci_bus_resume,
		#endif
		.start_port_reset = ohci_start_port_reset,
		};

		/-------------------------------------------------------------------------/

		#define resource_len(r) (((r)->end - (r)->start) + 1)
		static int ohci_hcd_sh_probe(struct platform_device *pdev)
		{
		struct resource *res = NULL;
		struct usb_hcd *hcd = NULL;
		int irq = -1;
		int ret;

		if (usb_disabled())
		return -ENODEV;

		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
		if (!res) {
		err("platform_get_resource error.");
		return -ENODEV;
		}

		irq = platform_get_irq(pdev, 0);
		if (irq < 0) {
		err("platform_get_irq error.");
		return -ENODEV;
		}

		/* initialize hcd */
		hcd = usb_create_hcd(&ohci_sh_hc_driver, &pdev->dev, (char *)hcd_name);
		if (!hcd) {
		err("Failed to create hcd");
		return -ENOMEM;
		}

		hcd->regs = (void __iomem *)res->start;
		hcd->rsrc_start = res->start;
		hcd->rsrc_len = resource_len(res);
		ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
		if (ret != 0) {
		err("Failed to add hcd");
		usb_put_hcd(hcd);
		return ret;
		}

		return ret;
		}

		static int ohci_hcd_sh_remove(struct platform_device *pdev)
		{
		struct usb_hcd *hcd = platform_get_drvdata(pdev);

		usb_remove_hcd(hcd);
		usb_put_hcd(hcd);

		return 0;
		}

		static struct platform_driver ohci_hcd_sh_driver = {
		.probe = ohci_hcd_sh_probe,
		.remove = ohci_hcd_sh_remove,
		.shutdown = usb_hcd_platform_shutdown,
		.driver = {
		.name = "sh_ohci",
		.owner = THIS_MODULE,
		},
		};