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Greg Kroah-Hartman39e7df52009-06-03 14:47:00 -07001#ifndef UDLFB_H
2#define UDLFB_H
Roberto De Ioris88e58b12009-06-03 14:03:06 -07003
Bernie Thompson530f43a2010-02-15 06:46:21 -08004/*
5 * TODO: Propose standard fb.h ioctl for reporting damage,
6 * using _IOWR() and one of the existing area structs from fb.h
7 * Consider these ioctls deprecated, but they're still used by the
8 * DisplayLink X server as yet - need both to be modified in tandem
9 * when new ioctl(s) are ready.
10 */
11#define DLFB_IOCTL_RETURN_EDID 0xAD
12#define DLFB_IOCTL_REPORT_DAMAGE 0xAA
13struct dloarea {
14 int x, y;
15 int w, h;
16 int x2, y2;
17};
Roberto De Ioris88e58b12009-06-03 14:03:06 -070018
Bernie Thompson4a4854d2010-02-15 06:45:55 -080019struct urb_node {
20 struct list_head entry;
21 struct dlfb_data *dev;
Bernie Thompson5bea1fb2010-09-05 18:28:29 -070022 struct delayed_work release_urb_work;
Bernie Thompson4a4854d2010-02-15 06:45:55 -080023 struct urb *urb;
24};
25
26struct 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
Roberto De Ioris88e58b12009-06-03 14:03:06 -070035struct dlfb_data {
36 struct usb_device *udev;
Bernie Thompson4a4854d2010-02-15 06:45:55 -080037 struct device *gdev; /* &udev->dev */
Roberto De Ioris88e58b12009-06-03 14:03:06 -070038 struct fb_info *info;
Bernie Thompson4a4854d2010-02-15 06:45:55 -080039 struct urb_list urbs;
40 struct kref kref;
Roberto De Ioris88e58b12009-06-03 14:03:06 -070041 char *backing_buffer;
Bernie Thompson7d9485e2010-02-15 06:46:08 -080042 int fb_count;
Bernie Thompson33077b82010-09-05 16:35:19 -070043 bool virtualized; /* true when physical usb device not present */
Bernie Thompson8d215472012-03-01 17:35:48 -080044 struct delayed_work init_framebuffer_work;
Bernie Thompson33077b82010-09-05 16:35:19 -070045 struct delayed_work free_framebuffer_work;
Bernie Thompson7d9485e2010-02-15 06:46:08 -080046 atomic_t usb_active; /* 0 = update virtual buffer, but no usb traffic */
Bernie Thompson4a4854d2010-02-15 06:45:55 -080047 atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */
Bernie Thompson18dffdf2010-09-05 16:35:23 -070048 char *edid; /* null until we read edid from hw or get from sysfs */
49 size_t edid_size;
Bernie Thompson7d9485e2010-02-15 06:46:08 -080050 int sku_pixel_limit;
Roberto De Ioris88e58b12009-06-03 14:03:06 -070051 int base16;
52 int base8;
Bernie Thompson59277b62009-11-24 15:52:21 -080053 u32 pseudo_palette[256];
Bernie Thompson58e7c3b2011-08-21 13:34:11 -070054 int blank_mode; /*one of FB_BLANK_ */
Bernie Thompson7d9485e2010-02-15 06:46:08 -080055 /* blit-only rendering path metrics, exposed through sysfs */
56 atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */
57 atomic_t bytes_identical; /* saved effort with backbuffer comparison */
58 atomic_t bytes_sent; /* to usb, after compression including overhead */
59 atomic_t cpu_kcycles_used; /* transpired during pixel processing */
Roberto De Ioris88e58b12009-06-03 14:03:06 -070060};
61
Bernie Thompsoncc403dc2010-02-15 06:45:49 -080062#define NR_USB_REQUEST_I2C_SUB_IO 0x02
63#define NR_USB_REQUEST_CHANNEL 0x12
64
Bernie Thompson4a4854d2010-02-15 06:45:55 -080065/* -BULK_SIZE as per usb-skeleton. Can we get full page and avoid overhead? */
66#define BULK_SIZE 512
67#define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE)
68#define WRITES_IN_FLIGHT (4)
69
Bernie Thompson18dffdf2010-09-05 16:35:23 -070070#define MAX_VENDOR_DESCRIPTOR_SIZE 256
71
Bernie Thompson4a4854d2010-02-15 06:45:55 -080072#define GET_URB_TIMEOUT HZ
73#define FREE_URB_TIMEOUT (HZ*2)
74
Bernie Thompson530f43a2010-02-15 06:46:21 -080075#define BPP 2
76#define MAX_CMD_PIXELS 255
Roberto De Ioris88e58b12009-06-03 14:03:06 -070077
Bernie Thompson530f43a2010-02-15 06:46:21 -080078#define RLX_HEADER_BYTES 7
79#define MIN_RLX_PIX_BYTES 4
80#define MIN_RLX_CMD_BYTES (RLX_HEADER_BYTES + MIN_RLX_PIX_BYTES)
Roberto De Ioris7316bc52009-06-10 23:02:19 -070081
Bernie Thompson530f43a2010-02-15 06:46:21 -080082#define RLE_HEADER_BYTES 6
83#define MIN_RLE_PIX_BYTES 3
84#define MIN_RLE_CMD_BYTES (RLE_HEADER_BYTES + MIN_RLE_PIX_BYTES)
Roberto De Ioris7316bc52009-06-10 23:02:19 -070085
Bernie Thompson530f43a2010-02-15 06:46:21 -080086#define RAW_HEADER_BYTES 6
87#define MIN_RAW_PIX_BYTES 2
88#define MIN_RAW_CMD_BYTES (RAW_HEADER_BYTES + MIN_RAW_PIX_BYTES)
Roberto De Ioris7316bc52009-06-10 23:02:19 -070089
Mikulas Patockaa328c4c2018-07-25 15:41:55 +020090#define DL_DEFIO_WRITE_DELAY msecs_to_jiffies(HZ <= 300 ? 4 : 10) /* optimal value for 720p video */
Bernie Thompson5bea1fb2010-09-05 18:28:29 -070091#define DL_DEFIO_WRITE_DISABLE (HZ*60) /* "disable" with long delay */
92
Bernie Thompson530f43a2010-02-15 06:46:21 -080093/* remove these once align.h patch is taken into kernel */
94#define DL_ALIGN_UP(x, a) ALIGN(x, a)
95#define DL_ALIGN_DOWN(x, a) ALIGN(x-(a-1), a)
Greg Kroah-Hartman39e7df52009-06-03 14:47:00 -070096
97#endif