1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2012 Red Hat
 4 *
 5 * based in parts on udlfb.c:
 6 * Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
 7 * Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
 8 * Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
 9 */
10
11#ifndef UDL_DRV_H
12#define UDL_DRV_H
13
14#include <linux/mm_types.h>
15#include <linux/usb.h>
16
17#include <drm/drm_connector.h>
18#include <drm/drm_crtc.h>
19#include <drm/drm_device.h>
20#include <drm/drm_encoder.h>
21#include <drm/drm_framebuffer.h>
22#include <drm/drm_gem.h>
23#include <drm/drm_plane.h>
24
25struct drm_mode_create_dumb;
26
27#define DRIVER_NAME		"udl"
28#define DRIVER_DESC		"DisplayLink"
29#define DRIVER_DATE		"20120220"
30
31#define DRIVER_MAJOR		0
32#define DRIVER_MINOR		0
33#define DRIVER_PATCHLEVEL	1
34
35struct udl_device;
36
37struct urb_node {
38	struct list_head entry;
39	struct udl_device *dev;
40	struct urb *urb;
41};
42
43struct urb_list {
44	struct list_head list;
45	spinlock_t lock;
46	wait_queue_head_t sleep;
47	int available;
48	int count;
49	size_t size;
50};
51
52struct udl_device {
53	struct drm_device drm;
54	struct device *dev;
55	struct device *dmadev;
56
57	struct drm_plane primary_plane;
58	struct drm_crtc crtc;
59	struct drm_encoder encoder;
60	struct drm_connector connector;
61
62	struct mutex gem_lock;
63
64	int sku_pixel_limit;
65
66	struct urb_list urbs;
67};
68
69#define to_udl(x) container_of(x, struct udl_device, drm)
70
71static inline struct usb_device *udl_to_usb_device(struct udl_device *udl)
72{
73	return interface_to_usbdev(to_usb_interface(udl->drm.dev));
74}
75
76/* modeset */
77int udl_modeset_init(struct drm_device *dev);
78struct drm_connector *udl_connector_init(struct drm_device *dev);
79
80struct urb *udl_get_urb(struct drm_device *dev);
81
82int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len);
83void udl_sync_pending_urbs(struct drm_device *dev);
84void udl_urb_completion(struct urb *urb);
85
86int udl_init(struct udl_device *udl);
87
88int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr,
89		     const char *front, char **urb_buf_ptr,
90		     u32 byte_offset, u32 device_byte_offset, u32 byte_width);
91
92int udl_drop_usb(struct drm_device *dev);
93int udl_select_std_channel(struct udl_device *udl);
94
95#endif