163 lines
3.6 KiB
C
163 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Copyright (C) 2012 Red Hat
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <drm/drm_crtc_helper.h>
|
|
#include <drm/drm_drv.h>
|
|
#include <drm/drm_fb_helper.h>
|
|
#include <drm/drm_file.h>
|
|
#include <drm/drm_gem_shmem_helper.h>
|
|
#include <drm/drm_ioctl.h>
|
|
#include <drm/drm_probe_helper.h>
|
|
#include <drm/drm_print.h>
|
|
|
|
#include "udl_drv.h"
|
|
|
|
static int udl_usb_suspend(struct usb_interface *interface,
|
|
pm_message_t message)
|
|
{
|
|
struct drm_device *dev = usb_get_intfdata(interface);
|
|
|
|
drm_kms_helper_poll_disable(dev);
|
|
return 0;
|
|
}
|
|
|
|
static int udl_usb_resume(struct usb_interface *interface)
|
|
{
|
|
struct drm_device *dev = usb_get_intfdata(interface);
|
|
|
|
drm_kms_helper_poll_enable(dev);
|
|
udl_modeset_restore(dev);
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_DRM_GEM_FOPS(udl_driver_fops);
|
|
|
|
static void udl_driver_release(struct drm_device *dev)
|
|
{
|
|
udl_fini(dev);
|
|
udl_modeset_cleanup(dev);
|
|
drm_dev_fini(dev);
|
|
kfree(dev);
|
|
}
|
|
|
|
static struct drm_driver driver = {
|
|
.driver_features = DRIVER_MODESET | DRIVER_GEM,
|
|
.release = udl_driver_release,
|
|
|
|
/* gem hooks */
|
|
.gem_create_object = udl_driver_gem_create_object,
|
|
|
|
.fops = &udl_driver_fops,
|
|
DRM_GEM_SHMEM_DRIVER_OPS,
|
|
|
|
.name = DRIVER_NAME,
|
|
.desc = DRIVER_DESC,
|
|
.date = DRIVER_DATE,
|
|
.major = DRIVER_MAJOR,
|
|
.minor = DRIVER_MINOR,
|
|
.patchlevel = DRIVER_PATCHLEVEL,
|
|
};
|
|
|
|
static struct udl_device *udl_driver_create(struct usb_interface *interface)
|
|
{
|
|
struct usb_device *udev = interface_to_usbdev(interface);
|
|
struct udl_device *udl;
|
|
int r;
|
|
|
|
udl = kzalloc(sizeof(*udl), GFP_KERNEL);
|
|
if (!udl)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
r = drm_dev_init(&udl->drm, &driver, &interface->dev);
|
|
if (r) {
|
|
kfree(udl);
|
|
return ERR_PTR(r);
|
|
}
|
|
|
|
udl->udev = udev;
|
|
udl->drm.dev_private = udl;
|
|
|
|
r = udl_init(udl);
|
|
if (r) {
|
|
drm_dev_fini(&udl->drm);
|
|
kfree(udl);
|
|
return ERR_PTR(r);
|
|
}
|
|
|
|
usb_set_intfdata(interface, udl);
|
|
return udl;
|
|
}
|
|
|
|
static int udl_usb_probe(struct usb_interface *interface,
|
|
const struct usb_device_id *id)
|
|
{
|
|
int r;
|
|
struct udl_device *udl;
|
|
|
|
udl = udl_driver_create(interface);
|
|
if (IS_ERR(udl))
|
|
return PTR_ERR(udl);
|
|
|
|
r = drm_dev_register(&udl->drm, 0);
|
|
if (r)
|
|
goto err_free;
|
|
|
|
DRM_INFO("Initialized udl on minor %d\n", udl->drm.primary->index);
|
|
|
|
r = drm_fbdev_generic_setup(&udl->drm, 16);
|
|
if (r)
|
|
goto err_drm_dev_unregister;
|
|
|
|
return 0;
|
|
|
|
err_drm_dev_unregister:
|
|
drm_dev_unregister(&udl->drm);
|
|
err_free:
|
|
drm_dev_put(&udl->drm);
|
|
return r;
|
|
}
|
|
|
|
static void udl_usb_disconnect(struct usb_interface *interface)
|
|
{
|
|
struct drm_device *dev = usb_get_intfdata(interface);
|
|
|
|
drm_kms_helper_poll_disable(dev);
|
|
udl_drop_usb(dev);
|
|
drm_dev_unplug(dev);
|
|
drm_dev_put(dev);
|
|
}
|
|
|
|
/*
|
|
* There are many DisplayLink-based graphics products, all with unique PIDs.
|
|
* So we match on DisplayLink's VID + Vendor-Defined Interface Class (0xff)
|
|
* We also require a match on SubClass (0x00) and Protocol (0x00),
|
|
* which is compatible with all known USB 2.0 era graphics chips and firmware,
|
|
* but allows DisplayLink to increment those for any future incompatible chips
|
|
*/
|
|
static const struct usb_device_id id_table[] = {
|
|
{.idVendor = 0x17e9, .bInterfaceClass = 0xff,
|
|
.bInterfaceSubClass = 0x00,
|
|
.bInterfaceProtocol = 0x00,
|
|
.match_flags = USB_DEVICE_ID_MATCH_VENDOR |
|
|
USB_DEVICE_ID_MATCH_INT_CLASS |
|
|
USB_DEVICE_ID_MATCH_INT_SUBCLASS |
|
|
USB_DEVICE_ID_MATCH_INT_PROTOCOL,},
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(usb, id_table);
|
|
|
|
static struct usb_driver udl_driver = {
|
|
.name = "udl",
|
|
.probe = udl_usb_probe,
|
|
.disconnect = udl_usb_disconnect,
|
|
.suspend = udl_usb_suspend,
|
|
.resume = udl_usb_resume,
|
|
.id_table = id_table,
|
|
};
|
|
module_usb_driver(udl_driver);
|
|
MODULE_LICENSE("GPL");
|