CVS Update: xc (branch: XORG-6_8-branch)

[Roland Mainz]

CVSROOT:	/cvs/xorg
Module name:	xc
Changes by:	gisburn at gabe.freedesktop.org	04/12/15 17:58:57

Log message:
  2004-12-15 Roland Mainz <roland.mainz at nrubsig.org>
    * xc/programs/Xserver/hw/xfree86/drivers/ati/radeon_driver.c
    Bugzilla #1306 (https://bugs.freedesktop.org/show_bug.cgi?id=1306)
    attachment #1292 (https://bugs.freedesktop.org/attachment.cgi?id=1292):
  
    This patch should work around the panel timing params not being initialized.
    Here's the problem:
  
    Previously, the PanelXRes and PanelYRes were either read from the BIOS or were
    left as 0 (if no BIOS was detected).  Then, in RADEONUpdatePanelSize(), the max
    panel size was found and the timing parameters were initialized, which worked
    fine for this ppc system.
  
    Now, the PanelXRes and PanelYRes are either read from the BIOS or are read from
    the registers.  Note that the other timing parameters (in particular the
    DotClock) are not initialized when reading from the registers.  Then, when
    RADEONUpdatePanelSize() is called, the max panel size is already set, so none
    of the other timing parameters are initialized here either (or anywhere else
    for that matter), which appears to be why the new code fails for this ppc
    system.
  
    The patch changes the test from < to <= in RADEONUpdatePanelSize() and then
    tests to make sure that only the first set of timings for the panel size read
    from the registers will be used -- this mimics the way the previous code
    worked.  The only problem with this code occurs when the registers hold invalid
    panel size params, which do not match any of the monitor's DDC info.  This
    should never happen; however, if it does, then the only solution in this case
    is to explicitly set the panel size in the config file.
  
    Patch by Kevin E. Martin <kem at freedesktop.org>

Modified files:
      ./:	Tag: XORG-6_8-branch
        ChangeLog 
      xc/programs/Xserver/hw/xfree86/drivers/ati/:	Tag: XORG-6_8-branch
        radeon_driver.c 
  
  Revision      Changes    Path
  1.365.2.96    +32 -1     xc/ChangeLog
  1.19.2.3      +4 -2      xc/programs/Xserver/hw/xfree86/drivers/ati/radeon_driver.c