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Diffstat (limited to 'Documentation/fb/udlfb.txt')
| -rw-r--r-- | Documentation/fb/udlfb.txt | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/fb/udlfb.txt b/Documentation/fb/udlfb.txt index 57d2f2908b12..c985cb65dd06 100644 --- a/Documentation/fb/udlfb.txt +++ b/Documentation/fb/udlfb.txt @@ -9,7 +9,7 @@ pairing that with a hardware framebuffer (16MB) on the other end of the USB wire. That hardware framebuffer is able to drive the VGA, DVI, or HDMI monitor with no CPU involvement until a pixel has to change. -The CPU or other local resource does all the rendering; optinally compares the +The CPU or other local resource does all the rendering; optionally compares the result with a local shadow of the remote hardware framebuffer to identify the minimal set of pixels that have changed; and compresses and sends those pixels line-by-line via USB bulk transfers. @@ -66,10 +66,10 @@ means that from a hardware and fbdev software perspective, everything is good. At that point, a /dev/fb? interface will be present for user-mode applications to open and begin writing to the framebuffer of the DisplayLink device using standard fbdev calls. Note that if mmap() is used, by default the user mode -application must send down damage notifcations to trigger repaints of the +application must send down damage notifications to trigger repaints of the changed regions. Alternatively, udlfb can be recompiled with experimental defio support enabled, to support a page-fault based detection mechanism -that can work without explicit notifcation. +that can work without explicit notification. The most common client of udlfb is xf86-video-displaylink or a modified xf86-video-fbdev X server. These servers have no real DisplayLink specific |