cregit-Linux how code gets into the kernel

Release 4.12 include/video/udlfb.h

Directory: include/video
#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 0xAA

struct dloarea {
	

int x, y;
	

int w, h;
	

int x2, y2;
};


struct urb_node {
	
struct list_head entry;
	
struct dlfb_data *dev;
	
struct delayed_work release_urb_work;
	
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 device *gdev; /* &udev->dev */
	
struct fb_info *info;
	
struct urb_list urbs;
	
struct kref kref;
	
char *backing_buffer;
	
int fb_count;
	
bool virtualized; /* true when physical usb device not present */
	
struct delayed_work init_framebuffer_work;
	
struct delayed_work free_framebuffer_work;
	
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_ */
	/* 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 */
};


#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    5 
/* fb_deferred_io.delay in jiffies */

#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

Overall Contributors

PersonTokensPropCommitsCommitProp
Bernie Thompson24483.85%1076.92%
Roberto De Ioris3813.06%17.69%
Greg Kroah-Hartman82.75%17.69%
Krzysztof Kozlowski10.34%17.69%
Total291100.00%13100.00%
Directory: include/video
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