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drm/radeon: fix dpms on/off on trinity/aruba v2 

The external encoder need to be setup again before enabling the
transmiter. This seems to be only needed on some trinity/aruba
to fix dpms on.

v2: Add comment, only setup again on dce6 ie aruba or newer.

Cc: <stable@kernel.org>
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jerome Glisse 2012-07-24 17:06:11 -04:00 committed by Dave Airlie
parent ca2ccde5e2
commit fcedac670c
1 changed files with 10 additions and 2 deletions
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12
drivers/gpu/drm/radeon/atombios_encoders.c
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@ -1392,10 +1392,18 @@ radeon_atom_encoder_dpms_dig(struct drm_encoder *encoder, int mode)
case DRM_MODE_DPMS_ON:
/* some early dce3.2 boards have a bug in their transmitter control table */
if ((rdev->family == CHIP_RV710) || (rdev->family == CHIP_RV730) ||
ASIC_IS_DCE41(rdev) || ASIC_IS_DCE5(rdev))
ASIC_IS_DCE41(rdev) || ASIC_IS_DCE5(rdev)) {
if (ASIC_IS_DCE6(rdev)) {
/* It seems we need to call ATOM_ENCODER_CMD_SETUP again
* before reenabling encoder on DPMS ON, otherwise we never
* get picture
*/
atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_SETUP, 0);
}
atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_ENABLE, 0, 0);
else
} else {
atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_ENABLE_OUTPUT, 0, 0);
}
if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(encoder)) && connector) {
if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
atombios_set_edp_panel_power(connector,