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drm/radeon/atom: fix dithering on certain panels

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commit 642528355c upstream.

We need to specify the encoder mode as LVDS for eDP
when using the Crtc_Source atom table in order to properly
set up the FMT hardware.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=73911

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alex Deucher
2014-05-27 16:40:51 -04:00
committed by Greg Kroah-Hartman
parent 0df1965d84
commit a8b505190f
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/radeon/atombios_encoders.c
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@@ -1884,8 +1884,11 @@ atombios_set_encoder_crtc_source(struct drm_encoder *encoder)
args.v2.ucEncodeMode = ATOM_ENCODER_MODE_CRT;
else
args.v2.ucEncodeMode = atombios_get_encoder_mode(encoder);
} else
} else if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
args.v2.ucEncodeMode = ATOM_ENCODER_MODE_LVDS;
} else {
args.v2.ucEncodeMode = atombios_get_encoder_mode(encoder);
}
switch (radeon_encoder->encoder_id) {
case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1: