drivers/staging/media/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  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software Foundation,
  15  * Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  16  */
  17
  18 #include <linux/module.h>
  19 #include <linux/slab.h>
  20 #include <linux/usb.h>
  21 #include <linux/firmware.h>
  22 #include <cypress_firmware.h>
  23
  24 struct fw_config {
  25         u16 vendor;
  26         u16 product;
  27         const char * const fw_name1;
  28         const char * const fw_name2;
  29 };
  30
  31 struct fw_config fw_configs[] = {
  32         { 0x1943, 0xa250, "go7007/s2250-1.fw", "go7007/s2250-2.fw" },
  33         { 0x093b, 0xa002, "go7007/px-m402u.fw", NULL },
  34         { 0x093b, 0xa004, "go7007/px-tv402u.fw", NULL },
  35         { 0x0eb1, 0x6666, "go7007/lr192.fw", NULL },
  36         { 0x0eb1, 0x6668, "go7007/wis-startrek.fw", NULL },
  37         { 0, 0, NULL, NULL }
  38 };
  39 MODULE_FIRMWARE("go7007/s2250-1.fw");
  40 MODULE_FIRMWARE("go7007/s2250-2.fw");
  41 MODULE_FIRMWARE("go7007/px-m402u.fw");
  42 MODULE_FIRMWARE("go7007/px-tv402u.fw");
  43 MODULE_FIRMWARE("go7007/lr192.fw");
  44 MODULE_FIRMWARE("go7007/wis-startrek.fw");
  45
  46 static int go7007_loader_probe(struct usb_interface *interface,
  47                                 const struct usb_device_id *id)
  48 {
  49         struct usb_device *usbdev;
  50         const struct firmware *fw;
  51         u16 vendor, product;
  52         const char *fw1, *fw2;
  53         int ret;
  54         int i;
  55
  56         usbdev = usb_get_dev(interface_to_usbdev(interface));
  57         if (!usbdev)
  58                 goto failed2;
  59
  60         if (usbdev->descriptor.bNumConfigurations != 1) {
  61                 dev_err(&interface->dev, "can't handle multiple config\n");
  62                 return -ENODEV;
  63         }
  64
  65         vendor = le16_to_cpu(usbdev->descriptor.idVendor);
  66         product = le16_to_cpu(usbdev->descriptor.idProduct);
  67
  68         for (i = 0; fw_configs[i].fw_name1; i++)
  69                 if (fw_configs[i].vendor == vendor &&
  70                     fw_configs[i].product == product)
  71                         break;
  72
  73         /* Should never happen */
  74         if (fw_configs[i].fw_name1 == NULL)
  75                 goto failed2;
  76
  77         fw1 = fw_configs[i].fw_name1;
  78         fw2 = fw_configs[i].fw_name2;
  79
  80         dev_info(&interface->dev, "loading firmware %s\n", fw1);
  81
  82         if (request_firmware(&fw, fw1, &usbdev->dev)) {
  83                 dev_err(&interface->dev,
  84                         "unable to load firmware from file \"%s\"\n", fw1);
  85                 goto failed2;
  86         }
  87         ret = cypress_load_firmware(usbdev, fw, CYPRESS_FX2);
  88         release_firmware(fw);
  89         if (0 != ret) {
  90                 dev_err(&interface->dev, "loader download failed\n");
  91                 goto failed2;
  92         }
  93
  94         if (fw2 == NULL)
  95                 return 0;
  96
  97         if (request_firmware(&fw, fw2, &usbdev->dev)) {
  98                 dev_err(&interface->dev,
  99                         "unable to load firmware from file \"%s\"\n", fw2);
 100                 goto failed2;
 101         }
 102         ret = cypress_load_firmware(usbdev, fw, CYPRESS_FX2);
 103         release_firmware(fw);
 104         if (0 != ret) {
 105                 dev_err(&interface->dev, "firmware download failed\n");
 106                 goto failed2;
 107         }
 108         return 0;
 109
 110 failed2:
 111         dev_err(&interface->dev, "probe failed\n");
 112         return -ENODEV;
 113 }
 114
 115 static void go7007_loader_disconnect(struct usb_interface *interface)
 116 {
 117         dev_info(&interface->dev, "disconnect\n");
 118         usb_set_intfdata(interface, NULL);
 119 }
 120
 121 static const struct usb_device_id go7007_loader_ids[] = {
 122         { USB_DEVICE(0x1943, 0xa250) },
 123         { USB_DEVICE(0x093b, 0xa002) },
 124         { USB_DEVICE(0x093b, 0xa004) },
 125         { USB_DEVICE(0x0eb1, 0x6666) },
 126         { USB_DEVICE(0x0eb1, 0x6668) },
 127         {}                          /* Terminating entry */
 128 };
 129
 130 MODULE_DEVICE_TABLE(usb, go7007_loader_ids);
 131
 132 static struct usb_driver go7007_loader_driver = {
 133         .name           = "go7007-loader",
 134         .probe          = go7007_loader_probe,
 135         .disconnect     = go7007_loader_disconnect,
 136         .id_table       = go7007_loader_ids,
 137 };
 138
 139 module_usb_driver(go7007_loader_driver);
 140
 141 MODULE_AUTHOR("");
 142 MODULE_DESCRIPTION("firmware loader for go7007-usb");
 143 MODULE_LICENSE("GPL v2");