/* SPDX-License-Identifier: GPL-2.0 */#ifndef UDLFB_H#define UDLFB_H /* * TODO: Propose standard fb.h ioctl for reporting damage, * using _IOWR() and one of the existing area structs from fb.h * Consider these ioctls deprecated, but they're still used by the * DisplayLink X server as yet - need both to be modified in tandem * when new ioctl(s) are ready. */#define DLFB_IOCTL_RETURN_EDID	 0xAD#define DLFB_IOCTL_REPORT_DAMAGE 0xAAstruct dloarea {	int x, y;	int w, h;	int x2, y2;}; struct urb_node {	struct list_head entry;	struct dlfb_data *dlfb;	struct urb *urb;}; struct urb_list {	struct list_head list;	spinlock_t lock;	struct semaphore limit_sem;	int available;	int count;	size_t size;}; struct dlfb_data {	struct usb_device *udev;	struct fb_info *info;	struct urb_list urbs;	char *backing_buffer;	int fb_count;	bool virtualized; /* true when physical usb device not present */	atomic_t usb_active; /* 0 = update virtual buffer, but no usb traffic */	atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */	char *edid; /* null until we read edid from hw or get from sysfs */	size_t edid_size;	int sku_pixel_limit;	int base16;	int base8;	u32 pseudo_palette[256];	int blank_mode; /*one of FB_BLANK_ */	struct mutex render_mutex;	int damage_x;	int damage_y;	int damage_x2;	int damage_y2;	spinlock_t damage_lock;	struct work_struct damage_work;	struct fb_ops ops;	atomic_t mmap_count;	/* blit-only rendering path metrics, exposed through sysfs */	atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */	atomic_t bytes_identical; /* saved effort with backbuffer comparison */	atomic_t bytes_sent; /* to usb, after compression including overhead */	atomic_t cpu_kcycles_used; /* transpired during pixel processing */	struct fb_var_screeninfo current_mode;	struct list_head deferred_free;}; #define NR_USB_REQUEST_I2C_SUB_IO 0x02#define NR_USB_REQUEST_CHANNEL 0x12 /* -BULK_SIZE as per usb-skeleton. Can we get full page and avoid overhead? */#define BULK_SIZE 512#define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE)#define WRITES_IN_FLIGHT (4) #define MAX_VENDOR_DESCRIPTOR_SIZE 256 #define GET_URB_TIMEOUT	HZ#define FREE_URB_TIMEOUT (HZ*2) #define BPP                     2#define MAX_CMD_PIXELS		255 #define RLX_HEADER_BYTES	7#define MIN_RLX_PIX_BYTES       4#define MIN_RLX_CMD_BYTES	(RLX_HEADER_BYTES + MIN_RLX_PIX_BYTES) #define RLE_HEADER_BYTES	6#define MIN_RLE_PIX_BYTES	3#define MIN_RLE_CMD_BYTES	(RLE_HEADER_BYTES + MIN_RLE_PIX_BYTES) #define RAW_HEADER_BYTES	6#define MIN_RAW_PIX_BYTES	2#define MIN_RAW_CMD_BYTES	(RAW_HEADER_BYTES + MIN_RAW_PIX_BYTES) #define DL_DEFIO_WRITE_DELAY    msecs_to_jiffies(HZ <= 300 ? 4 : 10) /* optimal value for 720p video */#define DL_DEFIO_WRITE_DISABLE  (HZ*60) /* "disable" with long delay */ /* remove these once align.h patch is taken into kernel */#define DL_ALIGN_UP(x, a) ALIGN(x, a)#define DL_ALIGN_DOWN(x, a) ALIGN_DOWN(x, a) #endif