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.
11
#define DLFB_IOCTL_RETURN_EDID 0xAD
12
#define DLFB_IOCTL_REPORT_DAMAGE 0xAA
20
struct list_head entry;
21
struct dlfb_data *dev;
22
struct delayed_work release_urb_work;
27
struct list_head list;
29
struct semaphore limit_sem;
36
struct usb_device *udev;
37
struct device *gdev; /* &udev->dev */
43
bool virtualized; /* true when physical usb device not present */
44
struct delayed_work free_framebuffer_work;
45
atomic_t usb_active; /* 0 = update virtual buffer, but no usb traffic */
46
atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */
47
char *edid; /* null until we read edid from hw or get from sysfs */
52
u32 pseudo_palette[256];
53
int blank_mode; /*one of FB_BLANK_ */
54
/* blit-only rendering path metrics, exposed through sysfs */
55
atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */
56
atomic_t bytes_identical; /* saved effort with backbuffer comparison */
57
atomic_t bytes_sent; /* to usb, after compression including overhead */
58
atomic_t cpu_kcycles_used; /* transpired during pixel processing */
61
#define NR_USB_REQUEST_I2C_SUB_IO 0x02
62
#define NR_USB_REQUEST_CHANNEL 0x12
64
/* -BULK_SIZE as per usb-skeleton. Can we get full page and avoid overhead? */
66
#define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE)
67
#define WRITES_IN_FLIGHT (4)
69
#define MAX_VENDOR_DESCRIPTOR_SIZE 256
71
#define GET_URB_TIMEOUT HZ
72
#define FREE_URB_TIMEOUT (HZ*2)
75
#define MAX_CMD_PIXELS 255
77
#define RLX_HEADER_BYTES 7
78
#define MIN_RLX_PIX_BYTES 4
79
#define MIN_RLX_CMD_BYTES (RLX_HEADER_BYTES + MIN_RLX_PIX_BYTES)
81
#define RLE_HEADER_BYTES 6
82
#define MIN_RLE_PIX_BYTES 3
83
#define MIN_RLE_CMD_BYTES (RLE_HEADER_BYTES + MIN_RLE_PIX_BYTES)
85
#define RAW_HEADER_BYTES 6
86
#define MIN_RAW_PIX_BYTES 2
87
#define MIN_RAW_CMD_BYTES (RAW_HEADER_BYTES + MIN_RAW_PIX_BYTES)
89
#define DL_DEFIO_WRITE_DELAY 5 /* fb_deferred_io.delay in jiffies */
90
#define DL_DEFIO_WRITE_DISABLE (HZ*60) /* "disable" with long delay */
92
/* remove these once align.h patch is taken into kernel */
93
#define DL_ALIGN_UP(x, a) ALIGN(x, a)
94
#define DL_ALIGN_DOWN(x, a) ALIGN(x-(a-1), a)