ChangeSet 1.2304, 2005/03/31 08:49:28-08:00, [EMAIL PROTECTED]
[PATCH] radeonfb: Preserve TMDS setting
radeonfb tends to override TMDS_TRANSMITTER_CNTL completely, which
appears
to be incorrect with some recent flat panels. This patch changes this
so
that we only tweak the bits we want in there and preserve the BIOS value
for the rest.
Along with the i2c fix, that patch fixes operations on the latest Apple
cinema displays.
Signed-off-by: Benjamin Herrenschmidt <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
radeon_base.c | 3 +--
1 files changed, 1 insertion(+), 2 deletions(-)
diff -Nru a/drivers/video/aty/radeon_base.c b/drivers/video/aty/radeon_base.c
--- a/drivers/video/aty/radeon_base.c 2005-03-31 10:28:41 -08:00
+++ b/drivers/video/aty/radeon_base.c 2005-03-31 10:28:41 -08:00
@@ -1743,8 +1743,7 @@
} else {
/* DFP */
newmode->fp_gen_cntl |= (FP_FPON | FP_TMDS_EN);
- newmode->tmds_transmitter_cntl = (TMDS_RAN_PAT_RST |
TMDS_ICHCSEL) &
- ~(TMDS_PLLRST);
+ newmode->tmds_transmitter_cntl &= ~(TMDS_PLLRST);
/* TMDS_PLL_EN bit is reversed on RV (and mobility)
chips */
if (IS_R300_VARIANT(rinfo) ||
(rinfo->family == CHIP_FAMILY_R200) ||
!rinfo->has_CRTC2)
-
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