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drm/radeon/kms: Disable TV load detect on RS400,RC410,RS480

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RS400,RC410,RS480 chipset seems to report a lot of false positive
with load detect on TV output. We haven't yet found a way to make
load detect reliable on those chipset, thus just disable it for TV
output. Would avoid user to experience phantom screen because X
believe there is a monitor connected to the TV output.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jerome Glisse 2009-11-13 20:56:35 +01:00 • committed by Dave Airlie
parent 23115b0592
commit 0beb81ab45
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/radeon/radeon_connectors.c
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@ -1149,6 +1149,13 @@ radeon_add_legacy_connector(struct drm_device *dev,
if (ret)
goto failed;
radeon_connector->dac_load_detect = true;
/* RS400,RC410,RS480 chipset seems to report a lot
* of false positive on load detect, we haven't yet
* found a way to make load detect reliable on those
* chipset, thus just disable it for TV.
*/
if (rdev->family == CHIP_RS400 || rdev->family == CHIP_RS480)
radeon_connector->dac_load_detect = false;
drm_connector_attach_property(&radeon_connector->base,
rdev->mode_info.load_detect_property,
1);