• York Sun's avatar
    fbdev: powerpc: driver for Freescale 8610 and 5121 DIU · 9b53a9e2
    York Sun authored
    The following features are supported:
    plane 0 works as a regular frame buffer, can be accessed by /dev/fb0
    plane 1 has two AOIs (area of interest), can be accessed by /dev/fb1 and /dev/fb2
    plane 2 has two AOIs, can be accessed by /dev/fb3 and /dev/fb4
    Special ioctls support AOIs
    
    All /dev/fb* can be used as regular frame buffer devices, except hardware
    change can only be made through /dev/fb0.  Changing pixel clock has no effect
    on other fbs.
    
    Limitation of usage of AOIs:
    AOIs on the same plane can not be horizonally overlapped
    AOIs have horizonal order, i.e. AOI0 should be always on top of AOI1
    AOIs can not beyond phisical display area. Application should check AOI geometry
    before changing physical resolution on /dev/fb0
    
    required command line parameters to preallocate memory for frame buffer diufb.
    
    optional command line parameters to set modes and monitor
    video=fslfb:[resolution][,bpp][,monitor]
    Syntax:
    
    Resolution
    xres x yres-bpp@refresh_rate, the -bpp and @refresh_rate are optional
    eg, 1024x768, 1280x1024, 1280x1024-32, 1280x1024@60, 1280x1024-32@60, 1280x480-32@60
    
    Bpp
    bpp=32, bpp=24, or bpp=16
    
    Monitor
    monitor=0, monitor=1, monitor=2
    0 is DVI
    1 is Single link LVDS
    2 is Double link LVDS
    
    Note: switching monitor is a board feather, not DIU feather. MPC8610HPCD has three
    monitor ports to swtich to. MPC5121ADS doesn't have additional monitor port. So switching
    monirot port for MPC5121ADS has no effect.
    
    If compiled as a module, it takes pamameters mode, bpp, monitor with the same syntax above.
    Signed-off-by: default avatarYork Sun <yorksun@freescale.com>
    Signed-off-by: default avatarTimur Tabi <timur@freescale.com>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
    Cc: "Antonino A. Daplas" <adaplas@pol.net>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    9b53a9e2
Makefile 5.58 KB