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_connector {
 53	struct drm_connector connector;
 54	/* last udl_detect edid */
 55	struct edid *edid;
 56};
 57
 58static inline struct udl_connector *to_udl_connector(struct drm_connector *connector)
 59{
 60	return container_of(connector, struct udl_connector, connector);
 61}
 62
 63struct udl_device {
 64	struct drm_device drm;
 65	struct device *dev;
 66	struct device *dmadev;
 67
 68	struct drm_plane primary_plane;
 69	struct drm_crtc crtc;
 70	struct drm_encoder encoder;
 71
 72	struct mutex gem_lock;
 73
 74	int sku_pixel_limit;
 75
 76	struct urb_list urbs;
 77};
 78
 79#define to_udl(x) container_of(x, struct udl_device, drm)
 80
 81static inline struct usb_device *udl_to_usb_device(struct udl_device *udl)
 82{
 83	return interface_to_usbdev(to_usb_interface(udl->drm.dev));
 84}
 85
 86/* modeset */
 87int udl_modeset_init(struct drm_device *dev);
 88struct drm_connector *udl_connector_init(struct drm_device *dev);
 89
 90struct urb *udl_get_urb(struct drm_device *dev);
 91
 92int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len);
 93void udl_sync_pending_urbs(struct drm_device *dev);
 94void udl_urb_completion(struct urb *urb);
 95
 96int udl_init(struct udl_device *udl);
 97
 98int udl_render_hline(struct drm_device *dev, int log_bpp, struct urb **urb_ptr,
 99		     const char *front, char **urb_buf_ptr,
100		     u32 byte_offset, u32 device_byte_offset, u32 byte_width);
101
102int udl_drop_usb(struct drm_device *dev);
103int udl_select_std_channel(struct udl_device *udl);
104
105#endif