drivers/usb/host/ohci-sh.c

   1 /*
   2  * OHCI HCD (Host Controller Driver) for USB.
   3  *
   4  * Copyright (C) 2008 Renesas Solutions Corp.
   5  *
   6  * Author : Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; version 2 of the License.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  *
  21  */
  22
  23 #include <linux/platform_device.h>
  24
  25 static int ohci_sh_start(struct usb_hcd *hcd)
  26 {
  27         struct ohci_hcd *ohci = hcd_to_ohci(hcd);
  28
  29         ohci_hcd_init(ohci);
  30         ohci_init(ohci);
  31         ohci_run(ohci);
  32         return 0;
  33 }
  34
  35 static const struct hc_driver ohci_sh_hc_driver = {
  36         .description =          hcd_name,
  37         .product_desc =         "SuperH OHCI",
  38         .hcd_priv_size =        sizeof(struct ohci_hcd),
  39
  40         /*
  41          * generic hardware linkage
  42          */
  43         .irq =                  ohci_irq,
  44         .flags =                HCD_USB11 | HCD_MEMORY,
  45
  46         /*
  47          * basic lifecycle operations
  48          */
  49         .start =                ohci_sh_start,
  50         .stop =                 ohci_stop,
  51         .shutdown =             ohci_shutdown,
  52
  53         /*
  54          * managing i/o requests and associated device resources
  55          */
  56         .urb_enqueue =          ohci_urb_enqueue,
  57         .urb_dequeue =          ohci_urb_dequeue,
  58         .endpoint_disable =     ohci_endpoint_disable,
  59
  60         /*
  61          * scheduling support
  62          */
  63         .get_frame_number =     ohci_get_frame,
  64
  65         /*
  66          * root hub support
  67          */
  68         .hub_status_data =      ohci_hub_status_data,
  69         .hub_control =          ohci_hub_control,
  70 #ifdef  CONFIG_PM
  71         .bus_suspend =          ohci_bus_suspend,
  72         .bus_resume =           ohci_bus_resume,
  73 #endif
  74         .start_port_reset =     ohci_start_port_reset,
  75 };
  76
  77 /*-------------------------------------------------------------------------*/
  78
  79 static int ohci_hcd_sh_probe(struct platform_device *pdev)
  80 {
  81         struct resource *res = NULL;
  82         struct usb_hcd *hcd = NULL;
  83         int irq = -1;
  84         int ret;
  85
  86         if (usb_disabled())
  87                 return -ENODEV;
  88
  89         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  90         if (!res) {
  91                 err("platform_get_resource error.");
  92                 return -ENODEV;
  93         }
  94
  95         irq = platform_get_irq(pdev, 0);
  96         if (irq < 0) {
  97                 err("platform_get_irq error.");
  98                 return -ENODEV;
  99         }
 100
 101         /* initialize hcd */
 102         hcd = usb_create_hcd(&ohci_sh_hc_driver, &pdev->dev, (char *)hcd_name);
 103         if (!hcd) {
 104                 err("Failed to create hcd");
 105                 return -ENOMEM;
 106         }
 107
 108         hcd->regs = (void __iomem *)res->start;
 109         hcd->rsrc_start = res->start;
 110         hcd->rsrc_len = resource_size(res);
 111         ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
 112         if (ret != 0) {
 113                 err("Failed to add hcd");
 114                 usb_put_hcd(hcd);
 115                 return ret;
 116         }
 117
 118         return ret;
 119 }
 120
 121 static int ohci_hcd_sh_remove(struct platform_device *pdev)
 122 {
 123         struct usb_hcd *hcd = platform_get_drvdata(pdev);
 124
 125         usb_remove_hcd(hcd);
 126         usb_put_hcd(hcd);
 127
 128         return 0;
 129 }
 130
 131 static struct platform_driver ohci_hcd_sh_driver = {
 132         .probe          = ohci_hcd_sh_probe,
 133         .remove         = ohci_hcd_sh_remove,
 134         .shutdown       = usb_hcd_platform_shutdown,
 135         .driver         = {
 136                 .name   = "sh_ohci",
 137                 .owner  = THIS_MODULE,
 138         },
 139 };
 140
 141 MODULE_ALIAS("platform:sh_ohci");