tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) 2012 Red Hat
3 *
4 * based in parts on udlfb.c:
5 * Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
6 * Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
7 * Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
8 *
9 * This file is subject to the terms and conditions of the GNU General Public
10 * License v2. See the file COPYING in the main directory of this archive for
11 * more details.
12 */
13
14#ifndef UDL_DRV_H
15#define UDL_DRV_H
16
17#include <linux/usb.h>
18#include <drm/drm_gem.h>
19
20#define DRIVER_NAME "udl"
21#define DRIVER_DESC "DisplayLink"
22#define DRIVER_DATE "20120220"
23
24#define DRIVER_MAJOR 0
25#define DRIVER_MINOR 0
26#define DRIVER_PATCHLEVEL 1
27
28struct udl_device;
29
30struct urb_node {
31 struct list_head entry;
32 struct udl_device *dev;
33 struct delayed_work release_urb_work;
34 struct urb *urb;
35};
36
37struct urb_list {
38 struct list_head list;
39 spinlock_t lock;
40 struct semaphore limit_sem;
41 int available;
42 int count;
43 size_t size;
44};
45
46struct udl_fbdev;
47
48struct udl_device {
49 struct device *dev;
50 struct drm_device *ddev;
51 struct usb_device *udev;
52
53 int sku_pixel_limit;
54
55 struct urb_list urbs;
56 atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */
57
58 struct udl_fbdev *fbdev;
59 char mode_buf[1024];
60 uint32_t mode_buf_len;
61 atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */
62 atomic_t bytes_identical; /* saved effort with backbuffer comparison */
63 atomic_t bytes_sent; /* to usb, after compression including overhead */
64 atomic_t cpu_kcycles_used; /* transpired during pixel processing */
65};
66
67struct udl_gem_object {
68 struct drm_gem_object base;
69 struct page **pages;
70 void *vmapping;
71 struct sg_table *sg;
72};
73
74#define to_udl_bo(x) container_of(x, struct udl_gem_object, base)
75
76struct udl_framebuffer {
77 struct drm_framebuffer base;
78 struct udl_gem_object *obj;
79 bool active_16; /* active on the 16-bit channel */
80 int x1, y1, x2, y2; /* dirty rect */
81 spinlock_t dirty_lock;
82};
83
84#define to_udl_fb(x) container_of(x, struct udl_framebuffer, base)
85
86/* modeset */
87int udl_modeset_init(struct drm_device *dev);
88void udl_modeset_cleanup(struct drm_device *dev);
89int udl_connector_init(struct drm_device *dev, struct drm_encoder *encoder);
90
91struct drm_encoder *udl_encoder_init(struct drm_device *dev);
92
93struct urb *udl_get_urb(struct drm_device *dev);
94
95int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len);
96void udl_urb_completion(struct urb *urb);
97
98int udl_driver_load(struct drm_device *dev, unsigned long flags);
99int udl_driver_unload(struct drm_device *dev);
100
101int udl_fbdev_init(struct drm_device *dev);
102void udl_fbdev_cleanup(struct drm_device *dev);
103void udl_fbdev_unplug(struct drm_device *dev);
104struct drm_framebuffer *
105udl_fb_user_fb_create(struct drm_device *dev,
106 struct drm_file *file,
107 struct drm_mode_fb_cmd2 *mode_cmd);
108
109int udl_render_hline(struct drm_device *dev, int bpp, struct urb **urb_ptr,
110 const char *front, char **urb_buf_ptr,
111 u32 byte_offset, u32 device_byte_offset, u32 byte_width,
112 int *ident_ptr, int *sent_ptr);
113
114int udl_dumb_create(struct drm_file *file_priv,
115 struct drm_device *dev,
116 struct drm_mode_create_dumb *args);
117int udl_gem_mmap(struct drm_file *file_priv, struct drm_device *dev,
118 uint32_t handle, uint64_t *offset);
119
120void udl_gem_free_object(struct drm_gem_object *gem_obj);
121struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev,
122 size_t size);
123struct drm_gem_object *udl_gem_prime_import(struct drm_device *dev,
124 struct dma_buf *dma_buf);
125
126int udl_gem_vmap(struct udl_gem_object *obj);
127void udl_gem_vunmap(struct udl_gem_object *obj);
128int udl_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
129int udl_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
130
131int udl_handle_damage(struct udl_framebuffer *fb, int x, int y,
132 int width, int height);
133
134int udl_drop_usb(struct drm_device *dev);
135
136#define CMD_WRITE_RAW8 "\xAF\x60" /**< 8 bit raw write command. */
137#define CMD_WRITE_RL8 "\xAF\x61" /**< 8 bit run length command. */
138#define CMD_WRITE_COPY8 "\xAF\x62" /**< 8 bit copy command. */
139#define CMD_WRITE_RLX8 "\xAF\x63" /**< 8 bit extended run length command. */
140
141#define CMD_WRITE_RAW16 "\xAF\x68" /**< 16 bit raw write command. */
142#define CMD_WRITE_RL16 "\xAF\x69" /**< 16 bit run length command. */
143#define CMD_WRITE_COPY16 "\xAF\x6A" /**< 16 bit copy command. */
144#define CMD_WRITE_RLX16 "\xAF\x6B" /**< 16 bit extended run length command. */
145
146#endif