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drm/radeon: re-enable sw ACR support on pre-DCE4
author
Alex Deucher
<alexander.deucher@amd.com>
Thu, 10 Oct 2013 15:47:01 +0000
(11:47 -0400)
committer
Alex Deucher
<alexander.deucher@amd.com>
Thu, 10 Oct 2013 15:47:01 +0000
(11:47 -0400)
HW ACR support may have issues on some older chips, so
use SW ACR for now until we've tested further.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
CC: Rafał Miłecki <zajec5@gmail.com>
drivers/gpu/drm/radeon/r600_hdmi.c
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diff --git
a/drivers/gpu/drm/radeon/r600_hdmi.c
b/drivers/gpu/drm/radeon/r600_hdmi.c
index
e2ae1c2
..
5b72931
100644
(file)
--- a/
drivers/gpu/drm/radeon/r600_hdmi.c
+++ b/
drivers/gpu/drm/radeon/r600_hdmi.c
@@
-451,6
+451,7
@@
void r600_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mod
}
WREG32(HDMI0_ACR_PACKET_CONTROL + offset,
+ HDMI0_ACR_SOURCE | /* select SW CTS value - XXX verify that hw CTS works on all families */
HDMI0_ACR_AUTO_SEND); /* allow hw to sent ACR packets when required */
WREG32(HDMI0_VBI_PACKET_CONTROL + offset,