| /* |
| * Copyright (C) 2012 Red Hat |
| * |
| * This file is subject to the terms and conditions of the GNU General Public |
| * License v2. See the file COPYING in the main directory of this archive for |
| * more details. |
| */ |
| |
| #include <linux/module.h> |
| #include <drm/drmP.h> |
| #include <drm/drm_crtc_helper.h> |
| #include "udl_drv.h" |
| |
| static int udl_driver_set_busid(struct drm_device *d, struct drm_master *m) |
| { |
| return 0; |
| } |
| |
| static const struct vm_operations_struct udl_gem_vm_ops = { |
| .fault = udl_gem_fault, |
| .open = drm_gem_vm_open, |
| .close = drm_gem_vm_close, |
| }; |
| |
| static const struct file_operations udl_driver_fops = { |
| .owner = THIS_MODULE, |
| .open = drm_open, |
| .mmap = udl_drm_gem_mmap, |
| .poll = drm_poll, |
| .read = drm_read, |
| .unlocked_ioctl = drm_ioctl, |
| .release = drm_release, |
| #ifdef CONFIG_COMPAT |
| .compat_ioctl = drm_compat_ioctl, |
| #endif |
| .llseek = noop_llseek, |
| }; |
| |
| static struct drm_driver driver = { |
| .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME, |
| .load = udl_driver_load, |
| .unload = udl_driver_unload, |
| .set_busid = udl_driver_set_busid, |
| |
| /* gem hooks */ |
| .gem_free_object = udl_gem_free_object, |
| .gem_vm_ops = &udl_gem_vm_ops, |
| |
| .dumb_create = udl_dumb_create, |
| .dumb_map_offset = udl_gem_mmap, |
| .dumb_destroy = drm_gem_dumb_destroy, |
| .fops = &udl_driver_fops, |
| |
| .prime_handle_to_fd = drm_gem_prime_handle_to_fd, |
| .prime_fd_to_handle = drm_gem_prime_fd_to_handle, |
| .gem_prime_export = udl_gem_prime_export, |
| .gem_prime_import = udl_gem_prime_import, |
| |
| .name = DRIVER_NAME, |
| .desc = DRIVER_DESC, |
| .date = DRIVER_DATE, |
| .major = DRIVER_MAJOR, |
| .minor = DRIVER_MINOR, |
| .patchlevel = DRIVER_PATCHLEVEL, |
| }; |
| |
| static int udl_usb_probe(struct usb_interface *interface, |
| const struct usb_device_id *id) |
| { |
| struct usb_device *udev = interface_to_usbdev(interface); |
| struct drm_device *dev; |
| int r; |
| |
| dev = drm_dev_alloc(&driver, &interface->dev); |
| if (!dev) |
| return -ENOMEM; |
| |
| r = drm_dev_register(dev, (unsigned long)udev); |
| if (r) |
| goto err_free; |
| |
| usb_set_intfdata(interface, dev); |
| DRM_INFO("Initialized udl on minor %d\n", dev->primary->index); |
| |
| return 0; |
| |
| err_free: |
| drm_dev_unref(dev); |
| 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); |
| drm_connector_unregister_all(dev); |
| udl_fbdev_unplug(dev); |
| udl_drop_usb(dev); |
| drm_unplug_dev(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 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, |
| .id_table = id_table, |
| }; |
| module_usb_driver(udl_driver); |
| MODULE_LICENSE("GPL"); |