137 lines
2.8 KiB
C
137 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2019 MediaTek Inc.
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/scatterlist.h>
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#include <linux/mutex.h>
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#include <linux/fs.h>
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#include <linux/uaccess.h>
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#include <linux/usb.h>
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#include "musb_core.h"
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#ifdef CONFIG_MTK_MUSB_CARPLAY_SUPPORT
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struct carplay_dev {
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struct usb_interface *intf;
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struct usb_device *dev;
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};
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struct carplay_dev *apple_dev;
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bool apple;
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int send_switch_cmd(void)
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{
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int retval;
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if (apple_dev == NULL) {
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DBG(0, "no apple device attach.\n");
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return -1;
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}
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DBG(0, "before usb_control_msg\n");
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retval = usb_control_msg(apple_dev->dev,
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usb_rcvctrlpipe(apple_dev->dev, 0),
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0x51, 0x40, 1, 0, NULL, 0,
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USB_CTRL_GET_TIMEOUT);
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DBG(0, "after usb_control_msg retval = %d\n", retval);
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if (retval != 0) {
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DBG(0, "%s fail retval = %d\n", __func__, retval);
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return -1;
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}
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return 0;
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}
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static int carplay_probe(struct usb_interface *intf,
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const struct usb_device_id *id)
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{
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struct usb_device *udev;
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struct carplay_dev *car_dev;
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DBG(0, "++ carplay probe ++\n");
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udev = interface_to_usbdev(intf);
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car_dev = kzalloc(sizeof(*car_dev), GFP_KERNEL);
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if (!car_dev)
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return -ENOMEM;
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usb_set_intfdata(intf, car_dev);
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car_dev->dev = udev;
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car_dev->intf = intf;
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apple_dev = car_dev;
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apple = true;
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if (car_dev->dev == NULL)
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DBG(0, "car_dev->dev error\n");
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return 0;
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}
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static void carplay_disconnect(struct usb_interface *intf)
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{
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struct carplay_dev *car_dev = usb_get_intfdata(intf);
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usb_set_intfdata(intf, NULL);
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dev_dbg(&intf->dev, "disconnect\n");
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car_dev->dev = NULL;
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car_dev->intf = NULL;
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kfree(car_dev);
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apple_dev = NULL;
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apple = false;
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DBG(0, "%s.\n", __func__);
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}
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static const struct usb_device_id id_table[] = {
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/*-------------------------------------------------------------*/
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/* EZ-USB devices which download firmware to replace (or in our
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* case augment) the default device implementation.
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*/
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/* generic EZ-USB FX2 controller (or development board) */
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{USB_DEVICE(0x05ac, 0x12a8),
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},
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/*-------------------------------------------------------------*/
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{}
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};
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/* MODULE_DEVICE_TABLE(usb, id_table); */
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static struct usb_driver carplay_driver = {
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.name = "carplay",
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.id_table = id_table,
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.probe = carplay_probe,
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.disconnect = carplay_disconnect,
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};
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/*-------------------------------------------------------------------------*/
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static int __init carplay_init(void)
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{
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DBG(0, "%s register carplay_driver\n", __func__);
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return usb_register(&carplay_driver);
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}
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module_init(carplay_init);
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static void __exit carplay_exit(void)
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{
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usb_deregister(&carplay_driver);
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}
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module_exit(carplay_exit);
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MODULE_DESCRIPTION("USB Core/HCD Testing Driver");
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MODULE_LICENSE("GPL");
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#endif
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