kernel/drivers/media/usb/go7007/go7007-loader.c

   1 /*
   2  * Copyright (C) 2008 Sensoray Company Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License (Version 2) as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #include <linux/module.h>
  15 #include <linux/slab.h>
  16 #include <linux/usb.h>
  17 #include <linux/firmware.h>
  18 #include <cypress_firmware.h>
  19
  20 struct fw_config {
  21         u16 vendor;
  22         u16 product;
  23         const char * const fw_name1;
  24         const char * const fw_name2;
  25 };
  26
  27 static struct fw_config fw_configs[] = {
  28         { 0x1943, 0xa250, "go7007/s2250-1.fw", "go7007/s2250-2.fw" },
  29         { 0x093b, 0xa002, "go7007/px-m402u.fw", NULL },
  30         { 0x093b, 0xa004, "go7007/px-tv402u.fw", NULL },
  31         { 0x0eb1, 0x6666, "go7007/lr192.fw", NULL },
  32         { 0x0eb1, 0x6668, "go7007/wis-startrek.fw", NULL },
  33         { 0, 0, NULL, NULL }
  34 };
  35 MODULE_FIRMWARE("go7007/s2250-1.fw");
  36 MODULE_FIRMWARE("go7007/s2250-2.fw");
  37 MODULE_FIRMWARE("go7007/px-m402u.fw");
  38 MODULE_FIRMWARE("go7007/px-tv402u.fw");
  39 MODULE_FIRMWARE("go7007/lr192.fw");
  40 MODULE_FIRMWARE("go7007/wis-startrek.fw");
  41
  42 static int go7007_loader_probe(struct usb_interface *interface,
  43                                 const struct usb_device_id *id)
  44 {
  45         struct usb_device *usbdev;
  46         const struct firmware *fw;
  47         u16 vendor, product;
  48         const char *fw1, *fw2;
  49         int ret;
  50         int i;
  51
  52         usbdev = usb_get_dev(interface_to_usbdev(interface));
  53         if (!usbdev)
  54                 goto failed2;
  55
  56         if (usbdev->descriptor.bNumConfigurations != 1) {
  57                 dev_err(&interface->dev, "can't handle multiple config\n");
  58                 goto failed2;
  59         }
  60
  61         vendor = le16_to_cpu(usbdev->descriptor.idVendor);
  62         product = le16_to_cpu(usbdev->descriptor.idProduct);
  63
  64         for (i = 0; fw_configs[i].fw_name1; i++)
  65                 if (fw_configs[i].vendor == vendor &&
  66                     fw_configs[i].product == product)
  67                         break;
  68
  69         /* Should never happen */
  70         if (fw_configs[i].fw_name1 == NULL)
  71                 goto failed2;
  72
  73         fw1 = fw_configs[i].fw_name1;
  74         fw2 = fw_configs[i].fw_name2;
  75
  76         dev_info(&interface->dev, "loading firmware %s\n", fw1);
  77
  78         if (request_firmware(&fw, fw1, &usbdev->dev)) {
  79                 dev_err(&interface->dev,
  80                         "unable to load firmware from file \"%s\"\n", fw1);
  81                 goto failed2;
  82         }
  83         ret = cypress_load_firmware(usbdev, fw, CYPRESS_FX2);
  84         release_firmware(fw);
  85         if (0 != ret) {
  86                 dev_err(&interface->dev, "loader download failed\n");
  87                 goto failed2;
  88         }
  89
  90         if (fw2 == NULL)
  91                 return 0;
  92
  93         if (request_firmware(&fw, fw2, &usbdev->dev)) {
  94                 dev_err(&interface->dev,
  95                         "unable to load firmware from file \"%s\"\n", fw2);
  96                 goto failed2;
  97         }
  98         ret = cypress_load_firmware(usbdev, fw, CYPRESS_FX2);
  99         release_firmware(fw);
 100         if (0 != ret) {
 101                 dev_err(&interface->dev, "firmware download failed\n");
 102                 goto failed2;
 103         }
 104         return 0;
 105
 106 failed2:
 107         usb_put_dev(usbdev);
 108         dev_err(&interface->dev, "probe failed\n");
 109         return -ENODEV;
 110 }
 111
 112 static void go7007_loader_disconnect(struct usb_interface *interface)
 113 {
 114         dev_info(&interface->dev, "disconnect\n");
 115         usb_put_dev(interface_to_usbdev(interface));
 116         usb_set_intfdata(interface, NULL);
 117 }
 118
 119 static const struct usb_device_id go7007_loader_ids[] = {
 120         { USB_DEVICE(0x1943, 0xa250) },
 121         { USB_DEVICE(0x093b, 0xa002) },
 122         { USB_DEVICE(0x093b, 0xa004) },
 123         { USB_DEVICE(0x0eb1, 0x6666) },
 124         { USB_DEVICE(0x0eb1, 0x6668) },
 125         {}                          /* Terminating entry */
 126 };
 127
 128 MODULE_DEVICE_TABLE(usb, go7007_loader_ids);
 129
 130 static struct usb_driver go7007_loader_driver = {
 131         .name           = "go7007-loader",
 132         .probe          = go7007_loader_probe,
 133         .disconnect     = go7007_loader_disconnect,
 134         .id_table       = go7007_loader_ids,
 135 };
 136
 137 module_usb_driver(go7007_loader_driver);
 138
 139 MODULE_AUTHOR("");
 140 MODULE_DESCRIPTION("firmware loader for go7007-usb");
 141 MODULE_LICENSE("GPL v2");