LXR linux/drivers/staging/sm750fb/readme

   1Introduction:
   2        SM750 of Silicon MOtion is pci express display controller device.
   3        The SM750 embedded graphics features include:
   4        - dual display
   5        - 2D acceleration
   6        - 16MB integrated video memory
   7
   8About the kernel module parameter of driver:
   9
  10        Use 1280,8bpp index color and 60 hz mode:
  11        insmod ./sm750fb.ko g_option="1280x1024-8@60"
  12
  13        Disable MTRR,Disable 2d acceleration,Disable hardware cursor,
  14        and use a 800x600 mode :
  15        insmod ./sm750fb.ko g_option="noaccel:nomtrr:nohwc:800x600"
  16
  17        dual frame buffer for driver with "dual" parameter
  18        insmod ./sm750fb.ko g_option="dual,800x600:1024x768"
  19        it will create fb0 and fb1 (or fb1,fb2 if fb0 already exist) under /dev
  20        and user can use con2fb to link fbX and ttyX
  21
  22        Notes:
  23        1) if you build the driver with built-in method, the parameter
  24                you edited in the grub config file will be also the
  25                same format as above modular method,but additionally add
  26                "video=sm750fb:"
  27                ahead of parameters,so,it looks like:
  28                video=sm750fb:noaccel,1280x1024@60,otherparam,etc...
  29                it equal to modular method with below command:
  30                insmod ./sm750fb.ko g_option="noaccel:1280x1024@60:otherparm:etc..."
  31
  32        2) if you put 800x600 into the parameter without bpp and
  33                refresh rate, kernel driver will defaulty use 16bpp and 60hz
  34
  35Important:
  36        if you have vesafb enabled in your config then /dev/fb0 will be created by vesafb
  37        and this driver will use fb1, fb2. In that case, you need to configure your X-server
  38        to use fb1. Another simple althernative is to disable vesafb from your config.
  39