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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
39e7df5d GKH |
2 | #ifndef UDLFB_H |
3 | #define UDLFB_H | |
88e58b1a | 4 | |
530f43a8 BT |
5 | /* |
6 | * TODO: Propose standard fb.h ioctl for reporting damage, | |
7 | * using _IOWR() and one of the existing area structs from fb.h | |
8 | * Consider these ioctls deprecated, but they're still used by the | |
9 | * DisplayLink X server as yet - need both to be modified in tandem | |
10 | * when new ioctl(s) are ready. | |
11 | */ | |
12 | #define DLFB_IOCTL_RETURN_EDID 0xAD | |
13 | #define DLFB_IOCTL_REPORT_DAMAGE 0xAA | |
14 | struct dloarea { | |
15 | int x, y; | |
16 | int w, h; | |
17 | int x2, y2; | |
18 | }; | |
88e58b1a | 19 | |
4a4854dd BT |
20 | struct urb_node { |
21 | struct list_head entry; | |
7ea46206 | 22 | struct dlfb_data *dlfb; |
4a4854dd BT |
23 | struct urb *urb; |
24 | }; | |
25 | ||
26 | struct urb_list { | |
27 | struct list_head list; | |
28 | spinlock_t lock; | |
29 | struct semaphore limit_sem; | |
30 | int available; | |
31 | int count; | |
32 | size_t size; | |
33 | }; | |
34 | ||
88e58b1a RDI |
35 | struct dlfb_data { |
36 | struct usb_device *udev; | |
88e58b1a | 37 | struct fb_info *info; |
4a4854dd | 38 | struct urb_list urbs; |
88e58b1a | 39 | char *backing_buffer; |
7d9485e2 | 40 | int fb_count; |
33077b8d | 41 | bool virtualized; /* true when physical usb device not present */ |
7d9485e2 | 42 | atomic_t usb_active; /* 0 = update virtual buffer, but no usb traffic */ |
4a4854dd | 43 | atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */ |
18dffdf8 BT |
44 | char *edid; /* null until we read edid from hw or get from sysfs */ |
45 | size_t edid_size; | |
7d9485e2 | 46 | int sku_pixel_limit; |
88e58b1a RDI |
47 | int base16; |
48 | int base8; | |
59277b67 | 49 | u32 pseudo_palette[256]; |
58e7c3b0 | 50 | int blank_mode; /*one of FB_BLANK_ */ |
babc250e | 51 | struct mutex render_mutex; |
6b11f9d8 MP |
52 | int damage_x; |
53 | int damage_y; | |
54 | int damage_x2; | |
55 | int damage_y2; | |
56 | spinlock_t damage_lock; | |
57 | struct work_struct damage_work; | |
2c29cfc3 | 58 | struct fb_ops ops; |
7d9485e2 BT |
59 | /* blit-only rendering path metrics, exposed through sysfs */ |
60 | atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */ | |
61 | atomic_t bytes_identical; /* saved effort with backbuffer comparison */ | |
62 | atomic_t bytes_sent; /* to usb, after compression including overhead */ | |
63 | atomic_t cpu_kcycles_used; /* transpired during pixel processing */ | |
564f1807 | 64 | struct fb_var_screeninfo current_mode; |
7433914e | 65 | struct list_head deferred_free; |
88e58b1a RDI |
66 | }; |
67 | ||
cc403dc6 BT |
68 | #define NR_USB_REQUEST_I2C_SUB_IO 0x02 |
69 | #define NR_USB_REQUEST_CHANNEL 0x12 | |
70 | ||
4a4854dd BT |
71 | /* -BULK_SIZE as per usb-skeleton. Can we get full page and avoid overhead? */ |
72 | #define BULK_SIZE 512 | |
73 | #define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE) | |
74 | #define WRITES_IN_FLIGHT (4) | |
75 | ||
18dffdf8 BT |
76 | #define MAX_VENDOR_DESCRIPTOR_SIZE 256 |
77 | ||
4a4854dd BT |
78 | #define GET_URB_TIMEOUT HZ |
79 | #define FREE_URB_TIMEOUT (HZ*2) | |
80 | ||
530f43a8 BT |
81 | #define BPP 2 |
82 | #define MAX_CMD_PIXELS 255 | |
88e58b1a | 83 | |
530f43a8 BT |
84 | #define RLX_HEADER_BYTES 7 |
85 | #define MIN_RLX_PIX_BYTES 4 | |
86 | #define MIN_RLX_CMD_BYTES (RLX_HEADER_BYTES + MIN_RLX_PIX_BYTES) | |
88e58b1a | 87 | |
530f43a8 BT |
88 | #define RLE_HEADER_BYTES 6 |
89 | #define MIN_RLE_PIX_BYTES 3 | |
90 | #define MIN_RLE_CMD_BYTES (RLE_HEADER_BYTES + MIN_RLE_PIX_BYTES) | |
88e58b1a | 91 | |
530f43a8 BT |
92 | #define RAW_HEADER_BYTES 6 |
93 | #define MIN_RAW_PIX_BYTES 2 | |
94 | #define MIN_RAW_CMD_BYTES (RAW_HEADER_BYTES + MIN_RAW_PIX_BYTES) | |
88e58b1a | 95 | |
bb24153a | 96 | #define DL_DEFIO_WRITE_DELAY msecs_to_jiffies(HZ <= 300 ? 4 : 10) /* optimal value for 720p video */ |
5bea1fbf BT |
97 | #define DL_DEFIO_WRITE_DISABLE (HZ*60) /* "disable" with long delay */ |
98 | ||
530f43a8 BT |
99 | /* remove these once align.h patch is taken into kernel */ |
100 | #define DL_ALIGN_UP(x, a) ALIGN(x, a) | |
ed067d4a | 101 | #define DL_ALIGN_DOWN(x, a) ALIGN_DOWN(x, a) |
39e7df5d GKH |
102 | |
103 | #endif |