go7007-loader.c

  1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 * Copyright (C) 2008 Sensoray Company Inc.
  4 */
  5
  6#include <linux/module.h>
  7#include <linux/slab.h>
  8#include <linux/usb.h>
  9#include <linux/firmware.h>
 10#include <cypress_firmware.h>
 11
 12struct fw_config {
 13	u16 vendor;
 14	u16 product;
 15	const char * const fw_name1;
 16	const char * const fw_name2;
 17};
 18
 19static struct fw_config fw_configs[] = {
 20	{ 0x1943, 0xa250, "go7007/s2250-1.fw", "go7007/s2250-2.fw" },
 21	{ 0x093b, 0xa002, "go7007/px-m402u.fw", NULL },
 22	{ 0x093b, 0xa004, "go7007/px-tv402u.fw", NULL },
 23	{ 0x0eb1, 0x6666, "go7007/lr192.fw", NULL },
 24	{ 0x0eb1, 0x6668, "go7007/wis-startrek.fw", NULL },
 25	{ 0, 0, NULL, NULL }
 26};
 27MODULE_FIRMWARE("go7007/s2250-1.fw");
 28MODULE_FIRMWARE("go7007/s2250-2.fw");
 29MODULE_FIRMWARE("go7007/px-m402u.fw");
 30MODULE_FIRMWARE("go7007/px-tv402u.fw");
 31MODULE_FIRMWARE("go7007/lr192.fw");
 32MODULE_FIRMWARE("go7007/wis-startrek.fw");
 33
 34static int go7007_loader_probe(struct usb_interface *interface,
 35				const struct usb_device_id *id)
 36{
 37	struct usb_device *usbdev;
 38	const struct firmware *fw;
 39	u16 vendor, product;
 40	const char *fw1, *fw2;
 41	int ret;
 42	int i;
 43
 44	usbdev = usb_get_dev(interface_to_usbdev(interface));
 45	if (!usbdev)
 46		goto failed2;
 47
 48	if (usbdev->descriptor.bNumConfigurations != 1) {
 49		dev_err(&interface->dev, "can't handle multiple config\n");
 50		goto failed2;
 51	}
 52
 53	vendor = le16_to_cpu(usbdev->descriptor.idVendor);
 54	product = le16_to_cpu(usbdev->descriptor.idProduct);
 55
 56	for (i = 0; fw_configs[i].fw_name1; i++)
 57		if (fw_configs[i].vendor == vendor &&
 58		    fw_configs[i].product == product)
 59			break;
 60
 61	/* Should never happen */
 62	if (fw_configs[i].fw_name1 == NULL)
 63		goto failed2;
 64
 65	fw1 = fw_configs[i].fw_name1;
 66	fw2 = fw_configs[i].fw_name2;
 67
 68	dev_info(&interface->dev, "loading firmware %s\n", fw1);
 69
 70	if (request_firmware(&fw, fw1, &usbdev->dev)) {
 71		dev_err(&interface->dev,
 72			"unable to load firmware from file \"%s\"\n", fw1);
 73		goto failed2;
 74	}
 75	ret = cypress_load_firmware(usbdev, fw, CYPRESS_FX2);
 76	release_firmware(fw);
 77	if (0 != ret) {
 78		dev_err(&interface->dev, "loader download failed\n");
 79		goto failed2;
 80	}
 81
 82	if (fw2 == NULL)
 83		return 0;
 84
 85	if (request_firmware(&fw, fw2, &usbdev->dev)) {
 86		dev_err(&interface->dev,
 87			"unable to load firmware from file \"%s\"\n", fw2);
 88		goto failed2;
 89	}
 90	ret = cypress_load_firmware(usbdev, fw, CYPRESS_FX2);
 91	release_firmware(fw);
 92	if (0 != ret) {
 93		dev_err(&interface->dev, "firmware download failed\n");
 94		goto failed2;
 95	}
 96	return 0;
 97
 98failed2:
 99	usb_put_dev(usbdev);
100	dev_err(&interface->dev, "probe failed\n");
101	return -ENODEV;
102}
103
104static void go7007_loader_disconnect(struct usb_interface *interface)
105{
106	dev_info(&interface->dev, "disconnect\n");
107	usb_put_dev(interface_to_usbdev(interface));
108	usb_set_intfdata(interface, NULL);
109}
110
111static const struct usb_device_id go7007_loader_ids[] = {
112	{ USB_DEVICE(0x1943, 0xa250) },
113	{ USB_DEVICE(0x093b, 0xa002) },
114	{ USB_DEVICE(0x093b, 0xa004) },
115	{ USB_DEVICE(0x0eb1, 0x6666) },
116	{ USB_DEVICE(0x0eb1, 0x6668) },
117	{}                          /* Terminating entry */
118};
119
120MODULE_DEVICE_TABLE(usb, go7007_loader_ids);
121
122static struct usb_driver go7007_loader_driver = {
123	.name		= "go7007-loader",
124	.probe		= go7007_loader_probe,
125	.disconnect	= go7007_loader_disconnect,
126	.id_table	= go7007_loader_ids,
127};
128
129module_usb_driver(go7007_loader_driver);
130
131MODULE_AUTHOR("");
132MODULE_DESCRIPTION("firmware loader for go7007-usb");
133MODULE_LICENSE("GPL v2");