138 lines
2.8 KiB
C
138 lines
2.8 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2018 MediaTek Inc.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/errno.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
#include <linux/mm.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/moduleparam.h>
|
||
|
|
#include <linux/scatterlist.h>
|
||
|
|
#include <linux/mutex.h>
|
||
|
|
|
||
|
|
#include <linux/fs.h>
|
||
|
|
#include <linux/uaccess.h>
|
||
|
|
|
||
|
|
#include <linux/usb.h>
|
||
|
|
#include "musb_core.h"
|
||
|
|
|
||
|
|
#ifdef CONFIG_MTK_MUSB_CARPLAY_SUPPORT
|
||
|
|
|
||
|
|
struct carplay_dev {
|
||
|
|
struct usb_interface *intf;
|
||
|
|
struct usb_device *dev;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct carplay_dev *apple_dev;
|
||
|
|
bool apple;
|
||
|
|
|
||
|
|
int send_switch_cmd(void)
|
||
|
|
{
|
||
|
|
int retval;
|
||
|
|
|
||
|
|
if (apple_dev == NULL) {
|
||
|
|
DBG(0, "no apple device attach.\n");
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
DBG(0, "before usb_control_msg\n");
|
||
|
|
retval = usb_control_msg(apple_dev->dev,
|
||
|
|
usb_rcvctrlpipe(apple_dev->dev, 0),
|
||
|
|
0x51, 0x40, 1, 0, NULL, 0,
|
||
|
|
USB_CTRL_GET_TIMEOUT);
|
||
|
|
|
||
|
|
DBG(0, "after usb_control_msg retval = %d\n", retval);
|
||
|
|
|
||
|
|
if (retval != 0) {
|
||
|
|
DBG(0, "%s fail retval = %d\n", __func__, retval);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int carplay_probe(struct usb_interface *intf,
|
||
|
|
const struct usb_device_id *id)
|
||
|
|
{
|
||
|
|
struct usb_device *udev;
|
||
|
|
struct carplay_dev *car_dev;
|
||
|
|
|
||
|
|
DBG(0, "++ carplay probe ++\n");
|
||
|
|
udev = interface_to_usbdev(intf);
|
||
|
|
|
||
|
|
car_dev = kzalloc(sizeof(*car_dev), GFP_KERNEL);
|
||
|
|
if (!car_dev)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
usb_set_intfdata(intf, car_dev);
|
||
|
|
car_dev->dev = udev;
|
||
|
|
car_dev->intf = intf;
|
||
|
|
apple_dev = car_dev;
|
||
|
|
apple = true;
|
||
|
|
if (car_dev->dev == NULL)
|
||
|
|
DBG(0, "car_dev->dev error\n");
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void carplay_disconnect(struct usb_interface *intf)
|
||
|
|
{
|
||
|
|
struct carplay_dev *car_dev = usb_get_intfdata(intf);
|
||
|
|
|
||
|
|
usb_set_intfdata(intf, NULL);
|
||
|
|
dev_dbg(&intf->dev, "disconnect\n");
|
||
|
|
car_dev->dev = NULL;
|
||
|
|
car_dev->intf = NULL;
|
||
|
|
kfree(car_dev);
|
||
|
|
apple_dev = NULL;
|
||
|
|
apple = false;
|
||
|
|
DBG(0, "%s.\n", __func__);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct usb_device_id id_table[] = {
|
||
|
|
|
||
|
|
/*-------------------------------------------------------------*/
|
||
|
|
|
||
|
|
/* EZ-USB devices which download firmware to replace (or in our
|
||
|
|
* case augment) the default device implementation.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* generic EZ-USB FX2 controller (or development board) */
|
||
|
|
{USB_DEVICE(0x05ac, 0x12a8),
|
||
|
|
},
|
||
|
|
|
||
|
|
/*-------------------------------------------------------------*/
|
||
|
|
|
||
|
|
{}
|
||
|
|
};
|
||
|
|
|
||
|
|
/* MODULE_DEVICE_TABLE(usb, id_table); */
|
||
|
|
|
||
|
|
static struct usb_driver carplay_driver = {
|
||
|
|
.name = "carplay",
|
||
|
|
.id_table = id_table,
|
||
|
|
.probe = carplay_probe,
|
||
|
|
.disconnect = carplay_disconnect,
|
||
|
|
};
|
||
|
|
|
||
|
|
/*-------------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
static int __init carplay_init(void)
|
||
|
|
{
|
||
|
|
DBG(0, "%s register carplay_driver\n", __func__);
|
||
|
|
return usb_register(&carplay_driver);
|
||
|
|
}
|
||
|
|
module_init(carplay_init);
|
||
|
|
|
||
|
|
static void __exit carplay_exit(void)
|
||
|
|
{
|
||
|
|
usb_deregister(&carplay_driver);
|
||
|
|
}
|
||
|
|
module_exit(carplay_exit);
|
||
|
|
|
||
|
|
MODULE_DESCRIPTION("USB Core/HCD Testing Driver");
|
||
|
|
MODULE_LICENSE("GPL");
|
||
|
|
#endif
|