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gerrit-public.fairphone.software / kernel / msm-4.19 / 91dc985c5e51af7036c1ccf9cea1b05662c96791 / . / drivers / gpu / drm / udl / udl_drv.h
blob: fccd361f7b50b4e4d4bd072afac3f32869da3da7 [file] [log] [blame]
Dave Airlie53209182010-12-15 07:14:24 +1000[diff] [blame]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
19#define DRIVER_NAME "udl"
20#define DRIVER_DESC "DisplayLink"
21#define DRIVER_DATE "20120220"
22
23#define DRIVER_MAJOR 0
24#define DRIVER_MINOR 0
25#define DRIVER_PATCHLEVEL 1
26
27struct udl_device;
28
29struct urb_node {
30 struct list_head entry;
31 struct udl_device *dev;
32 struct delayed_work release_urb_work;
33 struct urb *urb;
34};
35
36struct urb_list {
37 struct list_head list;
38 spinlock_t lock;
39 struct semaphore limit_sem;
40 int available;
41 int count;
42 size_t size;
43};
44
45struct udl_fbdev;
46
47struct udl_device {
48 struct device *dev;
49 struct drm_device *ddev;
50
51 int sku_pixel_limit;
52
53 struct urb_list urbs;
54 atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */
55
56 struct udl_fbdev *fbdev;
57 char mode_buf[1024];
58 uint32_t mode_buf_len;
59 atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */
60 atomic_t bytes_identical; /* saved effort with backbuffer comparison */
61 atomic_t bytes_sent; /* to usb, after compression including overhead */
62 atomic_t cpu_kcycles_used; /* transpired during pixel processing */
63};
64
65struct udl_gem_object {
66 struct drm_gem_object base;
67 struct page **pages;
68 void *vmapping;
Dave Airlie96503f52011-12-21 11:23:44 +0000[diff] [blame]69 struct sg_table *sg;
Dave Airlie53209182010-12-15 07:14:24 +1000[diff] [blame]70};
71
72#define to_udl_bo(x) container_of(x, struct udl_gem_object, base)
73
74struct udl_framebuffer {
75 struct drm_framebuffer base;
76 struct udl_gem_object *obj;
77 bool active_16; /* active on the 16-bit channel */
78};
79
80#define to_udl_fb(x) container_of(x, struct udl_framebuffer, base)
81
82/* modeset */
83int udl_modeset_init(struct drm_device *dev);
84void udl_modeset_cleanup(struct drm_device *dev);
85int udl_connector_init(struct drm_device *dev, struct drm_encoder *encoder);
86
87struct drm_encoder *udl_encoder_init(struct drm_device *dev);
88
89struct urb *udl_get_urb(struct drm_device *dev);
90
91int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len);
92void udl_urb_completion(struct urb *urb);
93
94int udl_driver_load(struct drm_device *dev, unsigned long flags);
95int udl_driver_unload(struct drm_device *dev);
96
97int udl_fbdev_init(struct drm_device *dev);
98void udl_fbdev_cleanup(struct drm_device *dev);
99void udl_fbdev_unplug(struct drm_device *dev);
100struct drm_framebuffer *
101udl_fb_user_fb_create(struct drm_device *dev,
102 struct drm_file *file,
103 struct drm_mode_fb_cmd2 *mode_cmd);
104
105int udl_render_hline(struct drm_device *dev, int bpp, struct urb **urb_ptr,
106 const char *front, char **urb_buf_ptr,
107 u32 byte_offset, u32 byte_width,
108 int *ident_ptr, int *sent_ptr);
109
110int udl_dumb_create(struct drm_file *file_priv,
111 struct drm_device *dev,
112 struct drm_mode_create_dumb *args);
113int udl_gem_mmap(struct drm_file *file_priv, struct drm_device *dev,
114 uint32_t handle, uint64_t *offset);
115int udl_dumb_destroy(struct drm_file *file_priv, struct drm_device *dev,
116 uint32_t handle);
117
118int udl_gem_init_object(struct drm_gem_object *obj);
119void udl_gem_free_object(struct drm_gem_object *gem_obj);
120struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev,
121 size_t size);
Dave Airlie96503f52011-12-21 11:23:44 +0000[diff] [blame]122struct drm_gem_object *udl_gem_prime_import(struct drm_device *dev,
123 struct dma_buf *dma_buf);
Dave Airlie53209182010-12-15 07:14:24 +1000[diff] [blame]124
125int udl_gem_vmap(struct udl_gem_object *obj);
126void udl_gem_vunmap(struct udl_gem_object *obj);
Konstantin Khlebnikovfa9e8552012-03-31 13:29:25 +0400[diff] [blame]127int udl_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
Dave Airlie53209182010-12-15 07:14:24 +1000[diff] [blame]128int udl_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
129
130int udl_handle_damage(struct udl_framebuffer *fb, int x, int y,
131 int width, int height);
132
133int udl_drop_usb(struct drm_device *dev);
134
135#define CMD_WRITE_RAW8 "\xAF\x60" /**< 8 bit raw write command. */
136#define CMD_WRITE_RL8 "\xAF\x61" /**< 8 bit run length command. */
137#define CMD_WRITE_COPY8 "\xAF\x62" /**< 8 bit copy command. */
138#define CMD_WRITE_RLX8 "\xAF\x63" /**< 8 bit extended run length command. */
139
140#define CMD_WRITE_RAW16 "\xAF\x68" /**< 16 bit raw write command. */
141#define CMD_WRITE_RL16 "\xAF\x69" /**< 16 bit run length command. */
142#define CMD_WRITE_COPY16 "\xAF\x6A" /**< 16 bit copy command. */
143#define CMD_WRITE_RLX16 "\xAF\x6B" /**< 16 bit extended run length command. */
144
145#endif