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drm/radeon/kms: add some dp encoder/connector helper funcs

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Used for dp1.2 support and for dp bridges.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2011-05-20 04:34:21 -04:00 • committed by Dave Airlie
parent 4e633939fe
commit d7fa8bb385
3 changed files with 99 additions and 0 deletions
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23
drivers/gpu/drm/radeon/radeon_encoders.c
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@ -250,6 +250,25 @@ struct drm_encoder *radeon_atom_get_external_encoder(struct drm_encoder *encoder
return NULL;
}
bool radeon_encoder_is_dp_bridge(struct drm_encoder *encoder)
{
struct drm_encoder *other_encoder = radeon_atom_get_external_encoder(encoder);
if (other_encoder) {
struct radeon_encoder *radeon_encoder = to_radeon_encoder(other_encoder);
switch (radeon_encoder->encoder_id) {
case ENCODER_OBJECT_ID_TRAVIS:
case ENCODER_OBJECT_ID_NUTMEG:
return true;
default:
return false;
}
}
return false;
}
void radeon_panel_mode_fixup(struct drm_encoder *encoder,
struct drm_display_mode *adjusted_mode)
{
@ -621,6 +640,10 @@ atombios_get_encoder_mode(struct drm_encoder *encoder)
struct radeon_connector *radeon_connector;
struct radeon_connector_atom_dig *dig_connector;
/* dp bridges are always DP */
if (radeon_encoder_is_dp_bridge(encoder))
return ATOM_ENCODER_MODE_DP;
connector = radeon_get_connector_for_encoder(encoder);
if (!connector) {
switch (radeon_encoder->encoder_id) {