linux/drivers/media/usb/go7007/go7007-loader.c
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   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
  20struct fw_config {
  21        u16 vendor;
  22        u16 product;
  23        const char * const fw_name1;
  24        const char * const fw_name2;
  25};
  26
  27static 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};
  35MODULE_FIRMWARE("go7007/s2250-1.fw");
  36MODULE_FIRMWARE("go7007/s2250-2.fw");
  37MODULE_FIRMWARE("go7007/px-m402u.fw");
  38MODULE_FIRMWARE("go7007/px-tv402u.fw");
  39MODULE_FIRMWARE("go7007/lr192.fw");
  40MODULE_FIRMWARE("go7007/wis-startrek.fw");
  41
  42static 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
 106failed2:
 107        usb_put_dev(usbdev);
 108        dev_err(&interface->dev, "probe failed\n");
 109        return -ENODEV;
 110}
 111
 112static 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
 119static 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
 128MODULE_DEVICE_TABLE(usb, go7007_loader_ids);
 129
 130static 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
 137module_usb_driver(go7007_loader_driver);
 138
 139MODULE_AUTHOR("");
 140MODULE_DESCRIPTION("firmware loader for go7007-usb");
 141MODULE_LICENSE("GPL v2");
 142
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