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drm/radeon/kms: fix support for DDC on dp bridges

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Need to set up the bridge for DDC prior to the
i2c over aux transaction.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher
2011-06-13 17:13:34 -04:00
committed by Dave Airlie
parent d629a3ceb4
commit 591a10e16c
3 changed files with 29 additions and 4 deletions
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12
drivers/gpu/drm/radeon/radeon_encoders.c
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@@ -2046,6 +2046,18 @@ radeon_atom_dig_detect(struct drm_encoder *encoder, struct drm_connector *connec
return connector_status_disconnected;
}
void
radeon_atom_ext_encoder_setup_ddc(struct drm_encoder *encoder)
{
struct drm_encoder *ext_encoder = radeon_atom_get_external_encoder(encoder);
if (ext_encoder)
/* ddc_setup on the dp bridge */
atombios_external_encoder_setup(encoder, ext_encoder,
EXTERNAL_ENCODER_ACTION_V3_DDC_SETUP);
}
static void radeon_atom_encoder_prepare(struct drm_encoder *encoder)
{
struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);