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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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71
drivers/gpu/drm/radeon/radeon_connectors.c
View File

@ -1068,6 +1068,77 @@ static int radeon_dp_get_modes(struct drm_connector *connector)
return ret;
}
bool radeon_connector_encoder_is_dp_bridge(struct drm_connector *connector)
{
struct drm_mode_object *obj;
struct drm_encoder *encoder;
struct radeon_encoder *radeon_encoder;
int i;
bool found = false;
for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
if (connector->encoder_ids[i] == 0)
break;
obj = drm_mode_object_find(connector->dev, connector->encoder_ids[i], DRM_MODE_OBJECT_ENCODER);
if (!obj)
continue;
encoder = obj_to_encoder(obj);
radeon_encoder = to_radeon_encoder(encoder);
switch (radeon_encoder->encoder_id) {
case ENCODER_OBJECT_ID_TRAVIS:
case ENCODER_OBJECT_ID_NUTMEG:
found = true;
break;
default:
break;
}
}
return found;
}
bool radeon_connector_encoder_is_hbr2(struct drm_connector *connector)
{
struct drm_mode_object *obj;
struct drm_encoder *encoder;
struct radeon_encoder *radeon_encoder;
int i;
bool found = false;
for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
if (connector->encoder_ids[i] == 0)
break;
obj = drm_mode_object_find(connector->dev, connector->encoder_ids[i], DRM_MODE_OBJECT_ENCODER);
if (!obj)
continue;
encoder = obj_to_encoder(obj);
radeon_encoder = to_radeon_encoder(encoder);
if (radeon_encoder->caps & ATOM_ENCODER_CAP_RECORD_HBR2)
found = true;
}
return found;
}
bool radeon_connector_is_dp12_capable(struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
struct radeon_device *rdev = dev->dev_private;
if (ASIC_IS_DCE5(rdev) &&
(rdev->clock.dp_extclk >= 53900) &&
radeon_connector_encoder_is_hbr2(connector)) {
return true;
}
return false;
}
static enum drm_connector_status
radeon_dp_detect(struct drm_connector *connector, bool force)
{

23
drivers/gpu/drm/radeon/radeon_encoders.c
View File

@ -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) {

5
drivers/gpu/drm/radeon/radeon_mode.h
View File

@ -464,6 +464,11 @@ radeon_atombios_get_tv_info(struct radeon_device *rdev);
extern struct drm_connector *
radeon_get_connector_for_encoder(struct drm_encoder *encoder);
extern bool radeon_encoder_is_dp_bridge(struct drm_encoder *encoder);
extern bool radeon_connector_encoder_is_dp_bridge(struct drm_connector *connector);
extern bool radeon_connector_encoder_is_hbr2(struct drm_connector *connector);
extern bool radeon_connector_is_dp12_capable(struct drm_connector *connector);
extern void radeon_connector_hotplug(struct drm_connector *connector);
extern bool radeon_dp_needs_link_train(struct radeon_connector *radeon_connector);
extern int radeon_dp_mode_valid_helper(struct radeon_connector *radeon_connector,