Fixed MTP to work with TWRP

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

@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2008 Sensoray Company Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License (Version 2) as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+#include <linux/firmware.h>
+#include <cypress_firmware.h>
+
+struct fw_config {
+	u16 vendor;
+	u16 product;
+	const char * const fw_name1;
+	const char * const fw_name2;
+};
+
+static struct fw_config fw_configs[] = {
+	{ 0x1943, 0xa250, "go7007/s2250-1.fw", "go7007/s2250-2.fw" },
+	{ 0x093b, 0xa002, "go7007/px-m402u.fw", NULL },
+	{ 0x093b, 0xa004, "go7007/px-tv402u.fw", NULL },
+	{ 0x0eb1, 0x6666, "go7007/lr192.fw", NULL },
+	{ 0x0eb1, 0x6668, "go7007/wis-startrek.fw", NULL },
+	{ 0, 0, NULL, NULL }
+};
+MODULE_FIRMWARE("go7007/s2250-1.fw");
+MODULE_FIRMWARE("go7007/s2250-2.fw");
+MODULE_FIRMWARE("go7007/px-m402u.fw");
+MODULE_FIRMWARE("go7007/px-tv402u.fw");
+MODULE_FIRMWARE("go7007/lr192.fw");
+MODULE_FIRMWARE("go7007/wis-startrek.fw");
+
+static int go7007_loader_probe(struct usb_interface *interface,
+				const struct usb_device_id *id)
+{
+	struct usb_device *usbdev;
+	const struct firmware *fw;
+	u16 vendor, product;
+	const char *fw1, *fw2;
+	int ret;
+	int i;
+
+	usbdev = usb_get_dev(interface_to_usbdev(interface));
+	if (!usbdev)
+		goto failed2;
+
+	if (usbdev->descriptor.bNumConfigurations != 1) {
+		dev_err(&interface->dev, "can't handle multiple config\n");
+		goto failed2;
+	}
+
+	vendor = le16_to_cpu(usbdev->descriptor.idVendor);
+	product = le16_to_cpu(usbdev->descriptor.idProduct);
+
+	for (i = 0; fw_configs[i].fw_name1; i++)
+		if (fw_configs[i].vendor == vendor &&
+		    fw_configs[i].product == product)
+			break;
+
+	/* Should never happen */
+	if (fw_configs[i].fw_name1 == NULL)
+		goto failed2;
+
+	fw1 = fw_configs[i].fw_name1;
+	fw2 = fw_configs[i].fw_name2;
+
+	dev_info(&interface->dev, "loading firmware %s\n", fw1);
+
+	if (request_firmware(&fw, fw1, &usbdev->dev)) {
+		dev_err(&interface->dev,
+			"unable to load firmware from file \"%s\"\n", fw1);
+		goto failed2;
+	}
+	ret = cypress_load_firmware(usbdev, fw, CYPRESS_FX2);
+	release_firmware(fw);
+	if (0 != ret) {
+		dev_err(&interface->dev, "loader download failed\n");
+		goto failed2;
+	}
+
+	if (fw2 == NULL)
+		return 0;
+
+	if (request_firmware(&fw, fw2, &usbdev->dev)) {
+		dev_err(&interface->dev,
+			"unable to load firmware from file \"%s\"\n", fw2);
+		goto failed2;
+	}
+	ret = cypress_load_firmware(usbdev, fw, CYPRESS_FX2);
+	release_firmware(fw);
+	if (0 != ret) {
+		dev_err(&interface->dev, "firmware download failed\n");
+		goto failed2;
+	}
+	return 0;
+
+failed2:
+	usb_put_dev(usbdev);
+	dev_err(&interface->dev, "probe failed\n");
+	return -ENODEV;
+}
+
+static void go7007_loader_disconnect(struct usb_interface *interface)
+{
+	dev_info(&interface->dev, "disconnect\n");
+	usb_put_dev(interface_to_usbdev(interface));
+	usb_set_intfdata(interface, NULL);
+}
+
+static const struct usb_device_id go7007_loader_ids[] = {
+	{ USB_DEVICE(0x1943, 0xa250) },
+	{ USB_DEVICE(0x093b, 0xa002) },
+	{ USB_DEVICE(0x093b, 0xa004) },
+	{ USB_DEVICE(0x0eb1, 0x6666) },
+	{ USB_DEVICE(0x0eb1, 0x6668) },
+	{}                          /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, go7007_loader_ids);
+
+static struct usb_driver go7007_loader_driver = {
+	.name		= "go7007-loader",
+	.probe		= go7007_loader_probe,
+	.disconnect	= go7007_loader_disconnect,
+	.id_table	= go7007_loader_ids,
+};
+
+module_usb_driver(go7007_loader_driver);
+
+MODULE_AUTHOR("");
+MODULE_DESCRIPTION("firmware loader for go7007-usb");
+MODULE_LICENSE("GPL v2");