projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| c805df3d AS |
1 | [This file is cloned from VesaFB/aty128fb] |
| 2 | ||
| 3 | What is lxfb? | |
| 4 | ================= | |
| 5 | ||
| 6 | This is a graphics framebuffer driver for AMD Geode LX based processors. | |
| 7 | ||
| 8 | Advantages: | |
| 9 | ||
| 10 | * No need to use AMD's VSA code (or other VESA emulation layer) in the | |
| 11 | BIOS. | |
| 12 | * It provides a nice large console (128 cols + 48 lines with 1024x768) | |
| 13 | without using tiny, unreadable fonts. | |
| 14 | * You can run XF68_FBDev on top of /dev/fb0 | |
| 15 | * Most important: boot logo :-) | |
| 16 | ||
| 17 | Disadvantages: | |
| 18 | ||
| 19 | * graphic mode is slower than text mode... | |
| 20 | ||
| 21 | ||
| 22 | How to use it? | |
| 23 | ============== | |
| 24 | ||
| 25 | Switching modes is done using lxfb.mode_option=<resolution>... boot | |
| 26 | parameter or using `fbset' program. | |
| 27 | ||
| 28 | See Documentation/fb/modedb.txt for more information on modedb | |
| 29 | resolutions. | |
| 30 | ||
| 31 | ||
| 32 | X11 | |
| 33 | === | |
| 34 | ||
| 35 | XF68_FBDev should generally work fine, but it is non-accelerated. | |
| 36 | ||
| 37 | ||
| 38 | Configuration | |
| 39 | ============= | |
| 40 | ||
| 41 | You can pass kernel command line options to lxfb with lxfb.<option>. | |
| 42 | For example, lxfb.mode_option=800x600@75. | |
| 43 | Accepted options: | |
| 44 | ||
| 45 | mode_option - specify the video mode. Of the form | |
| 46 | <x>x<y>[-<bpp>][@<refresh>] | |
| 47 | vram - size of video ram (normally auto-detected) | |
| 564820d4 AS |
48 | vt_switch - enable vt switching during suspend/resume. The vt |
| 49 | switch is slow, but harmless. | |
| c805df3d AS |
50 | |
| 51 | -- | |
| 52 | Andres Salomon <dilinger@debian.org> |