Lines Matching refs:of
8 pairing that with a hardware framebuffer (16MB) on the other end of the
13 result with a local shadow of the remote hardware framebuffer to identify
14 the minimal set of pixels that have changed; and compresses and sends those
17 Because of the efficiency of bulk transfers and a protocol on top that
25 Advantages of USB graphics in general:
27 * Ability to add a nearly arbitrary number of displays to any USB 2.0
28 capable system. On Linux, number of displays is limited by fbdev interface
32 Advantages of supporting DisplayLink chips with kernel framebuffer interface:
34 * The actual hardware functionality of DisplayLink chips matches nearly
45 In the case of USB graphics, it is just an allocated (virtual) buffer.
50 of virtual or remote framebuffers.
51 * Fbdev does not arbitrate client ownership of the framebuffer well.
53 * It's not clear what the future of fbdev is, given the rise of KMS/DRM.
60 of the monitor, and set the best common mode between the DisplayLink device
67 to open and begin writing to the framebuffer of the DisplayLink device using
69 application must send down damage notifcations to trigger repaints of the
74 The most common client of udlfb is xf86-video-displaylink or a modified
103 fb_defio Make use of the fb_defio (CONFIG_FB_DEFERRED_IO) kernel
104 module to track changed areas of the framebuffer by page faults.
127 Where ? is the sequential framebuffer id of the particular DisplayLink device
131 backup in case reading the actual EDID of the monitor
135 this file returns the current EDID of the attached
137 useful to get the EDID of the attached monitor,
140 metrics_bytes_rendered 32-bit count of pixel bytes rendered
142 metrics_bytes_identical 32-bit count of how many of those bytes were found to be
145 metrics_bytes_sent 32-bit count of how many bytes were transferred over
149 metrics_cpu_kcycles_used 32-bit count of CPU cycles used in processing the
150 above pixels (in thousands of cycles).
156 period of time (one minute or less is safe).