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;
26 struct list_head list;
28 struct semaphore limit_sem;
35 struct usb_device *udev;
36 struct device *gdev; /* &udev->dev */
41 struct delayed_work deferred_work;
42 struct mutex fb_open_lock;
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 */
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 */
59 #define NR_USB_REQUEST_I2C_SUB_IO 0x02
60 #define NR_USB_REQUEST_CHANNEL 0x12
62 /* -BULK_SIZE as per usb-skeleton. Can we get full page and avoid overhead? */
64 #define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE)
65 #define WRITES_IN_FLIGHT (4)
67 #define GET_URB_TIMEOUT HZ
68 #define FREE_URB_TIMEOUT (HZ*2)
71 #define MAX_CMD_PIXELS 255
73 #define RLX_HEADER_BYTES 7
74 #define MIN_RLX_PIX_BYTES 4
75 #define MIN_RLX_CMD_BYTES (RLX_HEADER_BYTES + MIN_RLX_PIX_BYTES)
77 #define RLE_HEADER_BYTES 6
78 #define MIN_RLE_PIX_BYTES 3
79 #define MIN_RLE_CMD_BYTES (RLE_HEADER_BYTES + MIN_RLE_PIX_BYTES)
81 #define RAW_HEADER_BYTES 6
82 #define MIN_RAW_PIX_BYTES 2
83 #define MIN_RAW_CMD_BYTES (RAW_HEADER_BYTES + MIN_RAW_PIX_BYTES)
85 /* remove these once align.h patch is taken into kernel */
86 #define DL_ALIGN_UP(x, a) ALIGN(x, a)
87 #define DL_ALIGN_DOWN(x, a) ALIGN(x-(a-1), a)
89 /* remove once this gets added to sysfs.h */
90 #define __ATTR_RW(attr) __ATTR(attr, 0644, attr##_show, attr##_store)
92 #define dl_err(format, arg...) \
93 dev_err(dev->gdev, "dlfb: " format, ## arg)
94 #define dl_warn(format, arg...) \
95 dev_warn(dev->gdev, "dlfb: " format, ## arg)
96 #define dl_notice(format, arg...) \
97 dev_notice(dev->gdev, "dlfb: " format, ## arg)
98 #define dl_info(format, arg...) \
99 dev_info(dev->gdev, "dlfb: " format, ## arg)