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