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drm/radeon/kms/atom: set sane defaults in atombios_get_encoder_mode()

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If there was no connector mapped to the encoder, atombios_get_encoder_mode()
returned 0 which is the id for DP.  Return something sane instead based on
the encoder id.  This avoids hitting the DP paths on non-DP encoders.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2010-11-17 02:49:40 -05:00 committed by Dave Airlie
parent ba251bde9a
commit c7a71fc761
1 changed files with 15 additions and 3 deletions
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18
drivers/gpu/drm/radeon/radeon_encoders.c
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@ -595,6 +595,7 @@ atombios_digital_setup(struct drm_encoder *encoder, int action)
int
atombios_get_encoder_mode(struct drm_encoder *encoder)
{
struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
struct drm_device *dev = encoder->dev;
struct radeon_device *rdev = dev->dev_private;
struct drm_connector *connector;
@ -602,9 +603,20 @@ atombios_get_encoder_mode(struct drm_encoder *encoder)
struct radeon_connector_atom_dig *dig_connector;
connector = radeon_get_connector_for_encoder(encoder);
if (!connector)
return 0;
if (!connector) {
switch (radeon_encoder->encoder_id) {
case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:
case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA:
case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1:
return ATOM_ENCODER_MODE_DVI;
case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DAC1:
case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DAC2:
default:
return ATOM_ENCODER_MODE_CRT;
}
}
radeon_connector = to_radeon_connector(connector);
switch (connector->connector_type) {