~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/include/video/udlfb.h

Version: ~ [ linux-5.15-rc5 ] ~ [ linux-5.14.11 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.72 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.152 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.210 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.250 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.286 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.288 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 #ifndef UDLFB_H
  3 #define UDLFB_H
  4 
  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 };
 19 
 20 struct urb_node {
 21         struct list_head entry;
 22         struct dlfb_data *dlfb;
 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 
 35 struct dlfb_data {
 36         struct usb_device *udev;
 37         struct fb_info *info;
 38         struct urb_list urbs;
 39         struct kref kref;
 40         char *backing_buffer;
 41         int fb_count;
 42         bool virtualized; /* true when physical usb device not present */
 43         struct delayed_work init_framebuffer_work;
 44         struct delayed_work free_framebuffer_work;
 45         atomic_t usb_active; /* 0 = update virtual buffer, but no usb traffic */
 46         atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */
 47         char *edid; /* null until we read edid from hw or get from sysfs */
 48         size_t edid_size;
 49         int sku_pixel_limit;
 50         int base16;
 51         int base8;
 52         u32 pseudo_palette[256];
 53         int blank_mode; /*one of FB_BLANK_ */
 54         struct fb_ops ops;
 55         /* 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 */
 60         struct fb_var_screeninfo current_mode;
 61 };
 62 
 63 #define NR_USB_REQUEST_I2C_SUB_IO 0x02
 64 #define NR_USB_REQUEST_CHANNEL 0x12
 65 
 66 /* -BULK_SIZE as per usb-skeleton. Can we get full page and avoid overhead? */
 67 #define BULK_SIZE 512
 68 #define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE)
 69 #define WRITES_IN_FLIGHT (4)
 70 
 71 #define MAX_VENDOR_DESCRIPTOR_SIZE 256
 72 
 73 #define GET_URB_TIMEOUT HZ
 74 #define FREE_URB_TIMEOUT (HZ*2)
 75 
 76 #define BPP                     2
 77 #define MAX_CMD_PIXELS          255
 78 
 79 #define RLX_HEADER_BYTES        7
 80 #define MIN_RLX_PIX_BYTES       4
 81 #define MIN_RLX_CMD_BYTES       (RLX_HEADER_BYTES + MIN_RLX_PIX_BYTES)
 82 
 83 #define RLE_HEADER_BYTES        6
 84 #define MIN_RLE_PIX_BYTES       3
 85 #define MIN_RLE_CMD_BYTES       (RLE_HEADER_BYTES + MIN_RLE_PIX_BYTES)
 86 
 87 #define RAW_HEADER_BYTES        6
 88 #define MIN_RAW_PIX_BYTES       2
 89 #define MIN_RAW_CMD_BYTES       (RAW_HEADER_BYTES + MIN_RAW_PIX_BYTES)
 90 
 91 #define DL_DEFIO_WRITE_DELAY    msecs_to_jiffies(HZ <= 300 ? 4 : 10) /* optimal value for 720p video */
 92 #define DL_DEFIO_WRITE_DISABLE  (HZ*60) /* "disable" with long delay */
 93 
 94 /* remove these once align.h patch is taken into kernel */
 95 #define DL_ALIGN_UP(x, a) ALIGN(x, a)
 96 #define DL_ALIGN_DOWN(x, a) ALIGN_DOWN(x, a)
 97 
 98 #endif
 99 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp