drivers/staging/udlfb/udlfb.h

   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 urb *urb;
  23 };
  24
  25 struct urb_list {
  26         struct list_head list;
  27         spinlock_t lock;
  28         struct semaphore limit_sem;
  29         int available;
  30         int count;
  31         size_t size;
  32 };
  33
  34 struct dlfb_data {
  35         struct usb_device *udev;
  36         struct device *gdev; /* &udev->dev */
  37         struct fb_info *info;
  38         struct urb_list urbs;
  39         struct kref kref;
  40         char *backing_buffer;
  41         struct delayed_work deferred_work;
  42         struct mutex fb_open_lock;
  43         int fb_count;
  44         atomic_t usb_active; /* 0 = update virtual buffer, but no usb traffic */
  45         atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */
  46         atomic_t use_defio; /* 0 = rely on ioctls and blit/copy/fill rects */
  47         char edid[128];
  48         int sku_pixel_limit;
  49         int base16;
  50         int base8;
  51         u32 pseudo_palette[256];
  52         /* blit-only rendering path metrics, exposed through sysfs */
  53         atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */
  54         atomic_t bytes_identical; /* saved effort with backbuffer comparison */
  55         atomic_t bytes_sent; /* to usb, after compression including overhead */
  56         atomic_t cpu_kcycles_used; /* transpired during pixel processing */
  57         /* interface usage metrics. Clients can call driver via several */
  58         atomic_t blit_count;
  59         atomic_t copy_count;
  60         atomic_t fill_count;
  61         atomic_t damage_count;
  62         atomic_t defio_fault_count;
  63 };
  64
  65 #define NR_USB_REQUEST_I2C_SUB_IO 0x02
  66 #define NR_USB_REQUEST_CHANNEL 0x12
  67
  68 /* -BULK_SIZE as per usb-skeleton. Can we get full page and avoid overhead? */
  69 #define BULK_SIZE 512
  70 #define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE)
  71 #define WRITES_IN_FLIGHT (4)
  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 /* remove these once align.h patch is taken into kernel */
  92 #define DL_ALIGN_UP(x, a) ALIGN(x, a)
  93 #define DL_ALIGN_DOWN(x, a) ALIGN(x-(a-1), a)
  94
  95 /* remove once this gets added to sysfs.h */
  96 #define __ATTR_RW(attr) __ATTR(attr, 0644, attr##_show, attr##_store)
  97
  98 #define dl_err(format, arg...) \
  99         dev_err(dev->gdev, "dlfb: " format, ## arg)
 100 #define dl_warn(format, arg...) \
 101         dev_warn(dev->gdev, "dlfb: " format, ## arg)
 102 #define dl_notice(format, arg...) \
 103         dev_notice(dev->gdev, "dlfb: " format, ## arg)
 104 #define dl_info(format, arg...) \
 105         dev_info(dev->gdev, "dlfb: " format, ## arg)
 106 #endif