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

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  1 #ifndef UDLFB_H
  2 #define UDLFB_H
  3 
  4 /*
  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
 13 struct dloarea {
 14         int x, y;
 15         int w, h;
 16         int x2, y2;
 17 };
 18 
 19 struct urb_node {
 20         struct list_head entry;
 21         struct dlfb_data *dev;
 22         struct delayed_work release_urb_work;
 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 device *gdev; /* &udev->dev */
 38         struct fb_info *info;
 39         struct urb_list urbs;
 40         struct kref kref;
 41         char *backing_buffer;
 42         int fb_count;
 43         bool virtualized; /* true when physical usb device not present */
 44         struct delayed_work init_framebuffer_work;
 45         struct delayed_work free_framebuffer_work;
 46         atomic_t usb_active; /* 0 = update virtual buffer, but no usb traffic */
 47         atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */
 48         char *edid; /* null until we read edid from hw or get from sysfs */
 49         size_t edid_size;
 50         int sku_pixel_limit;
 51         int base16;
 52         int base8;
 53         u32 pseudo_palette[256];
 54         int blank_mode; /*one of FB_BLANK_ */
 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 };
 61 
 62 #define NR_USB_REQUEST_I2C_SUB_IO 0x02
 63 #define NR_USB_REQUEST_CHANNEL 0x12
 64 
 65 /* -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 
 70 #define MAX_VENDOR_DESCRIPTOR_SIZE 256
 71 
 72 #define GET_URB_TIMEOUT HZ
 73 #define FREE_URB_TIMEOUT (HZ*2)
 74 
 75 #define BPP                     2
 76 #define MAX_CMD_PIXELS          255
 77 
 78 #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)
 81 
 82 #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)
 85 
 86 #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)
 89 
 90 #define DL_DEFIO_WRITE_DELAY    5 /* fb_deferred_io.delay in jiffies */
 91 #define DL_DEFIO_WRITE_DISABLE  (HZ*60) /* "disable" with long delay */
 92 
 93 /* 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)
 96 
 97 #endif
 98 

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