1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef UDLFB_H
#define UDLFB_H
/*
* TODO: Propose standard fb.h ioctl for reporting damage,
* using _IOWR() and one of the existing area structs from fb.h
* Consider these ioctls deprecated, but they're still used by the
* DisplayLink X server as yet - need both to be modified in tandem
* when new ioctl(s) are ready.
*/
#define DLFB_IOCTL_RETURN_EDID 0xAD
#define DLFB_IOCTL_REPORT_DAMAGE 0xAA
struct dloarea {
int x, y;
int w, h;
int x2, y2;
};
struct urb_node {
struct list_head entry;
struct dlfb_data *dev;
struct delayed_work release_urb_work;
struct urb *urb;
};
struct urb_list {
struct list_head list;
spinlock_t lock;
struct semaphore limit_sem;
int available;
int count;
size_t size;
};
struct dlfb_data {
struct usb_device *udev;
struct fb_info *info;
struct urb_list urbs;
struct kref kref;
char *backing_buffer;
int fb_count;
bool virtualized; /* true when physical usb device not present */
struct delayed_work init_framebuffer_work;
struct delayed_work free_framebuffer_work;
atomic_t usb_active; /* 0 = update virtual buffer, but no usb traffic */
atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */
char *edid; /* null until we read edid from hw or get from sysfs */
size_t edid_size;
int sku_pixel_limit;
int base16;
int base8;
u32 pseudo_palette[256];
int blank_mode; /*one of FB_BLANK_ */
/* blit-only rendering path metrics, exposed through sysfs */
atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */
atomic_t bytes_identical; /* saved effort with backbuffer comparison */
atomic_t bytes_sent; /* to usb, after compression including overhead */
atomic_t cpu_kcycles_used; /* transpired during pixel processing */
};
#define NR_USB_REQUEST_I2C_SUB_IO 0x02
#define NR_USB_REQUEST_CHANNEL 0x12
/* -BULK_SIZE as per usb-skeleton. Can we get full page and avoid overhead? */
#define BULK_SIZE 512
#define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE)
#define WRITES_IN_FLIGHT (4)
#define MAX_VENDOR_DESCRIPTOR_SIZE 256
#define GET_URB_TIMEOUT HZ
#define FREE_URB_TIMEOUT (HZ*2)
#define BPP 2
#define MAX_CMD_PIXELS 255
#define RLX_HEADER_BYTES 7
#define MIN_RLX_PIX_BYTES 4
#define MIN_RLX_CMD_BYTES (RLX_HEADER_BYTES + MIN_RLX_PIX_BYTES)
#define RLE_HEADER_BYTES 6
#define MIN_RLE_PIX_BYTES 3
#define MIN_RLE_CMD_BYTES (RLE_HEADER_BYTES + MIN_RLE_PIX_BYTES)
#define RAW_HEADER_BYTES 6
#define MIN_RAW_PIX_BYTES 2
#define MIN_RAW_CMD_BYTES (RAW_HEADER_BYTES + MIN_RAW_PIX_BYTES)
#define DL_DEFIO_WRITE_DELAY 5 /* fb_deferred_io.delay in jiffies */
#define DL_DEFIO_WRITE_DISABLE (HZ*60) /* "disable" with long delay */
/* remove these once align.h patch is taken into kernel */
#define DL_ALIGN_UP(x, a) ALIGN(x, a)
#define DL_ALIGN_DOWN(x, a) ALIGN_DOWN(x, a)
#endif
|
