mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 11:44:01 +08:00
80fd9cd52d
Add main vudc module file. This allows us to register suitable
platform device and driver (just like dummy_hcd does).
Currently number of vudc instances is determined using module
parameter but whole infrastructure is suitable to make vudc
creation dynamic (for example via configfs).
This commit is a result of cooperation between Samsung R&D Institute
Poland and Open Operating Systems Student Society at University
of Warsaw (O2S3@UW) consisting of:
Igor Kotrasinski <ikotrasinsk@gmail.com>
Karol Kosik <karo9@interia.eu>
Ewelina Kosmider <3w3lfin@gmail.com>
Dawid Lazarczyk <lazarczyk.dawid@gmail.com>
Piotr Szulc <ps347277@students.mimuw.edu.pl>
Tutor and project owner:
Krzysztof Opasiak <k.opasiak@samsung.com>
Signed-off-by: Igor Kotrasinski <i.kotrasinsk@samsung.com>
Signed-off-by: Karol Kosik <karo9@interia.eu>
[Various bug fixes and commit message update]
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
114 lines
2.9 KiB
C
114 lines
2.9 KiB
C
/*
|
|
* Copyright (C) 2015 Karol Kosik <karo9@interia.eu>
|
|
* Copyright (C) 2015-2016 Samsung Electronics
|
|
* Igor Kotrasinski <i.kotrasinsk@samsung.com>
|
|
* Krzysztof Opasiak <k.opasiak@samsung.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/list.h>
|
|
#include <linux/module.h>
|
|
|
|
#include "vudc.h"
|
|
|
|
static unsigned int vudc_number = 1;
|
|
|
|
module_param_named(num, vudc_number, uint, S_IRUGO);
|
|
MODULE_PARM_DESC(num, "number of emulated controllers");
|
|
|
|
static struct platform_driver vudc_driver = {
|
|
.probe = vudc_probe,
|
|
.remove = vudc_remove,
|
|
.driver = {
|
|
.name = GADGET_NAME,
|
|
},
|
|
};
|
|
|
|
static struct list_head vudc_devices = LIST_HEAD_INIT(vudc_devices);
|
|
|
|
static int __init init(void)
|
|
{
|
|
int retval = -ENOMEM;
|
|
int i;
|
|
struct vudc_device *udc_dev = NULL, *udc_dev2 = NULL;
|
|
|
|
if (usb_disabled())
|
|
return -ENODEV;
|
|
|
|
if (vudc_number < 1) {
|
|
pr_err("Number of emulated UDC must be no less than 1");
|
|
return -EINVAL;
|
|
}
|
|
|
|
retval = platform_driver_register(&vudc_driver);
|
|
if (retval < 0)
|
|
goto out;
|
|
|
|
for (i = 0; i < vudc_number; i++) {
|
|
udc_dev = alloc_vudc_device(i);
|
|
if (!udc_dev) {
|
|
retval = -ENOMEM;
|
|
goto cleanup;
|
|
}
|
|
|
|
retval = platform_device_add(udc_dev->pdev);
|
|
if (retval < 0) {
|
|
put_vudc_device(udc_dev);
|
|
goto cleanup;
|
|
}
|
|
|
|
list_add_tail(&udc_dev->dev_entry, &vudc_devices);
|
|
if (!platform_get_drvdata(udc_dev->pdev)) {
|
|
/*
|
|
* The udc was added successfully but its probe
|
|
* function failed for some reason.
|
|
*/
|
|
retval = -EINVAL;
|
|
goto cleanup;
|
|
}
|
|
}
|
|
goto out;
|
|
|
|
cleanup:
|
|
list_for_each_entry_safe(udc_dev, udc_dev2, &vudc_devices, dev_entry) {
|
|
list_del(&udc_dev->dev_entry);
|
|
platform_device_del(udc_dev->pdev);
|
|
put_vudc_device(udc_dev);
|
|
}
|
|
|
|
platform_driver_unregister(&vudc_driver);
|
|
out:
|
|
return retval;
|
|
}
|
|
module_init(init);
|
|
|
|
static void __exit cleanup(void)
|
|
{
|
|
struct vudc_device *udc_dev = NULL, *udc_dev2 = NULL;
|
|
|
|
list_for_each_entry_safe(udc_dev, udc_dev2, &vudc_devices, dev_entry) {
|
|
list_del(&udc_dev->dev_entry);
|
|
platform_device_unregister(udc_dev->pdev);
|
|
put_vudc_device(udc_dev);
|
|
}
|
|
platform_driver_unregister(&vudc_driver);
|
|
}
|
|
module_exit(cleanup);
|
|
|
|
MODULE_DESCRIPTION("USB over IP Device Controller");
|
|
MODULE_AUTHOR("Krzysztof Opasiak, Karol Kosik, Igor Kotrasinski");
|
|
MODULE_LICENSE("GPL");
|