linux/drivers/video/aty
Risto Suominen 7fbb7cadd0 fbdev/atyfb: Fix DSP config on some PowerMacs & PowerBooks
Since the complete re-write in 2.6.10, some PowerMacs (At least PowerMac 5500
and PowerMac G3 Beige rev A) with ATI Mach64 chip have suffered from unstable
columns in their framebuffer image. This seems to depend on a value (4) read
from PLL_EXT_CNTL register, which leads to incorrect DSP config parameters to
be written to the chip. This patch uses a value calculated by aty_init_pll_ct
instead, as a starting point.

There are questions as to whether this should be extended to other platforms
or maybe made dependent on specific chip types, but in the meantime, this has
been tested on various powermacs and works for them so let's commit it.

Signed-off-by: Risto Suominen <Risto.Suominen@gmail.com>
Tested-by: Michael Pettersson <mike@it.uu.se>
Cc: <stable@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-02-02 17:08:25 +11:00
..
ati_ids.h Radeonfb Xpress 200M RC410 support 2007-10-16 09:43:19 -07:00
aty128fb.c pci: use pci_ioremap_bar() in drivers/video 2009-01-06 15:59:26 -08:00
atyfb_base.c atyfb_base.c: fix warning 2008-08-05 14:33:49 -07:00
atyfb.h atyfb: atyfb: Unshare pseudo_palette 2007-10-16 09:43:17 -07:00
mach64_accel.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
mach64_ct.c fbdev/atyfb: Fix DSP config on some PowerMacs & PowerBooks 2009-02-02 17:08:25 +11:00
mach64_cursor.c fbdev: change asm/uaccess.h to linux/uaccess.h 2007-10-16 09:43:17 -07:00
mach64_gx.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
Makefile [PATCH] Rewritten backlight infrastructure for portable Apple computers 2006-06-25 10:00:59 -07:00
radeon_accel.c Revert "radeonfb: accelerate imageblit and other improvements" 2008-12-10 16:53:32 -08:00
radeon_backlight.c Revert "radeonfb: accelerate imageblit and other improvements" 2008-12-10 16:53:32 -08:00
radeon_base.c Revert "radeonfb: accelerate imageblit and other improvements" 2008-12-10 16:53:32 -08:00
radeon_i2c.c i2c: Delete many unused adapter IDs 2009-01-26 21:19:52 +01:00
radeon_monitor.c radeonfb: drop redundant RTRACE macro 2008-04-28 08:58:38 -07:00
radeon_pm.c Revert "radeonfb: accelerate imageblit and other improvements" 2008-12-10 16:53:32 -08:00
radeonfb.h Revert "radeonfb: accelerate imageblit and other improvements" 2008-12-10 16:53:32 -08:00