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 <shimoda.yoshihiro@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         hcd->state = HC_STATE_RUNNING;
  33         return 0;
  34 }
  35
  36 static const struct hc_driver ohci_sh_hc_driver = {
  37         .description =          hcd_name,
  38         .product_desc =         "SuperH OHCI",
  39         .hcd_priv_size =        sizeof(struct ohci_hcd),
  40
  41         /*
  42          * generic hardware linkage
  43          */
  44         .irq =                  ohci_irq,
  45         .flags =                HCD_USB11 | HCD_MEMORY,
  46
  47         /*
  48          * basic lifecycle operations
  49          */
  50         .start =                ohci_sh_start,
  51         .stop =                 ohci_stop,
  52         .shutdown =             ohci_shutdown,
  53
  54         /*
  55          * managing i/o requests and associated device resources
  56          */
  57         .urb_enqueue =          ohci_urb_enqueue,
  58         .urb_dequeue =          ohci_urb_dequeue,
  59         .endpoint_disable =     ohci_endpoint_disable,
  60
  61         /*
  62          * scheduling support
  63          */
  64         .get_frame_number =     ohci_get_frame,
  65
  66         /*
  67          * root hub support
  68          */
  69         .hub_status_data =      ohci_hub_status_data,
  70         .hub_control =          ohci_hub_control,
  71 #ifdef  CONFIG_PM
  72         .bus_suspend =          ohci_bus_suspend,
  73         .bus_resume =           ohci_bus_resume,
  74 #endif
  75         .start_port_reset =     ohci_start_port_reset,
  76 };
  77
  78 /*-------------------------------------------------------------------------*/
  79
  80 #define resource_len(r) (((r)->end - (r)->start) + 1)
  81 static int ohci_hcd_sh_probe(struct platform_device *pdev)
  82 {
  83         struct resource *res = NULL;
  84         struct usb_hcd *hcd = NULL;
  85         int irq = -1;
  86         int ret;
  87
  88         if (usb_disabled())
  89                 return -ENODEV;
  90
  91         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  92         if (!res) {
  93                 err("platform_get_resource error.");
  94                 return -ENODEV;
  95         }
  96
  97         irq = platform_get_irq(pdev, 0);
  98         if (irq < 0) {
  99                 err("platform_get_irq error.");
 100                 return -ENODEV;
 101         }
 102
 103         /* initialize hcd */
 104         hcd = usb_create_hcd(&ohci_sh_hc_driver, &pdev->dev, (char *)hcd_name);
 105         if (!hcd) {
 106                 err("Failed to create hcd");
 107                 return -ENOMEM;
 108         }
 109
 110         hcd->regs = (void __iomem *)res->start;
 111         hcd->rsrc_start = res->start;
 112         hcd->rsrc_len = resource_len(res);
 113         ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
 114         if (ret != 0) {
 115                 err("Failed to add hcd");
 116                 usb_put_hcd(hcd);
 117                 return ret;
 118         }
 119
 120         return ret;
 121 }
 122
 123 static int ohci_hcd_sh_remove(struct platform_device *pdev)
 124 {
 125         struct usb_hcd *hcd = platform_get_drvdata(pdev);
 126
 127         usb_remove_hcd(hcd);
 128         usb_put_hcd(hcd);
 129
 130         return 0;
 131 }
 132
 133 static struct platform_driver ohci_hcd_sh_driver = {
 134         .probe          = ohci_hcd_sh_probe,
 135         .remove         = ohci_hcd_sh_remove,
 136         .shutdown       = usb_hcd_platform_shutdown,
 137         .driver         = {
 138                 .name   = "sh_ohci",
 139                 .owner  = THIS_MODULE,
 140         },
 141 };
 142
 143 MODULE_ALIAS("platform:sh_ohci");