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 
12 struct fw_config {
13 	u16 vendor;
14 	u16 product;
15 	const char * const fw_name1;
16 	const char * const fw_name2;
17 };
18 
19 static 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 };
27 MODULE_FIRMWARE("go7007/s2250-1.fw");
28 MODULE_FIRMWARE("go7007/s2250-2.fw");
29 MODULE_FIRMWARE("go7007/px-m402u.fw");
30 MODULE_FIRMWARE("go7007/px-tv402u.fw");
31 MODULE_FIRMWARE("go7007/lr192.fw");
32 MODULE_FIRMWARE("go7007/wis-startrek.fw");
33 
34 static 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 
98 failed2:
99 	usb_put_dev(usbdev);
100 	dev_err(&interface->dev, "probe failed\n");
101 	return -ENODEV;
102 }
103 
104 static 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 
111 static 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 
120 MODULE_DEVICE_TABLE(usb, go7007_loader_ids);
121 
122 static 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 
129 module_usb_driver(go7007_loader_driver);
130 
131 MODULE_AUTHOR("");
132 MODULE_DESCRIPTION("firmware loader for go7007-usb");
133 MODULE_LICENSE("GPL v2");
134