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    Subject[062/205] drm/radeon/kms: fix DP after DPMS cycle
    2.6.34-stable review patch.  If anyone has any objections, please let us know.

    ------------------

    From: Alex Deucher <alexdeucher@gmail.com>

    commit a5f798ce2b9de4b14c46cb68d58c488dc1b8e215 upstream.

    The transmitter needs to be enabled before the link is trained.

    Reported-By: Lars Doelle <lars.doelle@on-line.de>
    Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
    Signed-off-by: Dave Airlie <airlied@redhat.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

    ---
    drivers/gpu/drm/radeon/radeon_encoders.c | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    --- a/drivers/gpu/drm/radeon/radeon_encoders.c
    +++ b/drivers/gpu/drm/radeon/radeon_encoders.c
    @@ -1075,6 +1075,8 @@ radeon_atom_encoder_dpms(struct drm_enco
    if (is_dig) {
    switch (mode) {
    case DRM_MODE_DPMS_ON:
    + if (!ASIC_IS_DCE4(rdev))
    + atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_ENABLE_OUTPUT, 0, 0);
    if (atombios_get_encoder_mode(encoder) == ATOM_ENCODER_MODE_DP) {
    struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);

    @@ -1082,8 +1084,6 @@ radeon_atom_encoder_dpms(struct drm_enco
    if (ASIC_IS_DCE4(rdev))
    atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_VIDEO_ON);
    }
    - if (!ASIC_IS_DCE4(rdev))
    - atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_ENABLE_OUTPUT, 0, 0);
    break;
    case DRM_MODE_DPMS_STANDBY:
    case DRM_MODE_DPMS_SUSPEND:



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