linux-hardened/Documentation/fb/sa1100fb.txt
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

39 lines
1.3 KiB
Text

[This file is cloned from VesaFB/matroxfb]
What is sa1100fb?
=================
This is a driver for a graphic framebuffer for the SA-1100 LCD
controller.
Configuration
==============
For most common passive displays, giving the option
video=sa1100fb:bpp:<value>,lccr0:<value>,lccr1:<value>,lccr2:<value>,lccr3:<value>
on the kernel command line should be enough to configure the
controller. The bits per pixel (bpp) value should be 4, 8, 12, or
16. LCCR values are display-specific and should be computed as
documented in the SA-1100 Developer's Manual, Section 11.7. Dual-panel
displays are supported as long as the SDS bit is set in LCCR0; GPIO<9:2>
are used for the lower panel.
For active displays or displays requiring additional configuration
(controlling backlights, powering on the LCD, etc.), the command line
options may not be enough to configure the display. Adding sections to
sa1100fb_init_fbinfo(), sa1100fb_activate_var(),
sa1100fb_disable_lcd_controller(), and sa1100fb_enable_lcd_controller()
will probably be necessary.
Accepted options:
bpp:<value> Configure for <value> bits per pixel
lccr0:<value> Configure LCD control register 0 (11.7.3)
lccr1:<value> Configure LCD control register 1 (11.7.4)
lccr2:<value> Configure LCD control register 2 (11.7.5)
lccr3:<value> Configure LCD control register 3 (11.7.6)
--
Mark Huang <mhuang@livetoy.com>