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drm/radeon/atom: rework encoder enable/disable sequence
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This more closely matches what the vbios does and also
adds a quirk for travis lvds displays and powers down
the sink on DP displays which saves some power and may
fix display issues in some cases.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
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Alex Deucher authored and Christian König committed Mar 25, 2014
1 parent 2953da1 commit 6f50e07
Showing 1 changed file with 34 additions and 48 deletions.
82 changes: 34 additions & 48 deletions drivers/gpu/drm/radeon/atombios_encoders.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1633,10 +1633,16 @@ radeon_atom_encoder_dpms_dig(struct drm_encoder *encoder, int mode)
struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
struct radeon_connector *radeon_connector = NULL;
struct radeon_connector_atom_dig *radeon_dig_connector = NULL;
bool travis_quirk = false;

if (connector) {
radeon_connector = to_radeon_connector(connector);
radeon_dig_connector = radeon_connector->con_priv;
if ((radeon_connector_encoder_get_dp_bridge_encoder_id(connector) ==
ENCODER_OBJECT_ID_TRAVIS) &&
(radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) &&
!ASIC_IS_DCE5(rdev))
travis_quirk = true;
}

switch (mode) {
Expand All @@ -1657,86 +1663,70 @@ radeon_atom_encoder_dpms_dig(struct drm_encoder *encoder, int mode)
atombios_external_encoder_setup(encoder, ext_encoder,
EXTERNAL_ENCODER_ACTION_V3_ENCODER_SETUP);
}
atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_ENABLE, 0, 0);
} else if (ASIC_IS_DCE4(rdev)) {
/* setup and enable the encoder */
atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_SETUP, 0);
/* enable the transmitter */
atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_ENABLE, 0, 0);
} else {
/* setup and enable the encoder and transmitter */
atombios_dig_encoder_setup(encoder, ATOM_ENABLE, 0);
atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_SETUP, 0, 0);
atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_ENABLE, 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,
ATOM_TRANSMITTER_ACTION_POWER_ON);
radeon_dig_connector->edp_on = true;
}
}
/* enable the transmitter */
atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_ENABLE, 0, 0);
if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(encoder)) && connector) {
/* DP_SET_POWER_D0 is set in radeon_dp_link_train */
radeon_dp_link_train(encoder, connector);
if (ASIC_IS_DCE4(rdev))
atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_VIDEO_ON, 0);
}
if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))
atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_LCD_BLON, 0, 0);
atombios_dig_transmitter_setup(encoder,
ATOM_TRANSMITTER_ACTION_LCD_BLON, 0, 0);
if (ext_encoder)
atombios_external_encoder_setup(encoder, ext_encoder, ATOM_ENABLE);
break;
case DRM_MODE_DPMS_STANDBY:
case DRM_MODE_DPMS_SUSPEND:
case DRM_MODE_DPMS_OFF:
if (ASIC_IS_DCE4(rdev)) {
if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(encoder)) && connector)
atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_VIDEO_OFF, 0);
}
if (ext_encoder)
atombios_external_encoder_setup(encoder, ext_encoder, ATOM_DISABLE);
if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))
atombios_dig_transmitter_setup(encoder,
ATOM_TRANSMITTER_ACTION_LCD_BLOFF, 0, 0);

if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(encoder)) &&
connector && !travis_quirk)
radeon_dp_set_rx_power_state(connector, DP_SET_POWER_D3);
if (ASIC_IS_DCE4(rdev)) {
/* disable the transmitter */
atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_DISABLE, 0, 0);
atombios_dig_transmitter_setup(encoder,
ATOM_TRANSMITTER_ACTION_DISABLE, 0, 0);
} else {
/* disable the encoder and transmitter */
atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_DISABLE, 0, 0);
atombios_dig_transmitter_setup(encoder,
ATOM_TRANSMITTER_ACTION_DISABLE, 0, 0);
atombios_dig_encoder_setup(encoder, ATOM_DISABLE, 0);
}
if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(encoder)) && connector) {
if (ASIC_IS_DCE4(rdev))
atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_VIDEO_OFF, 0);
if (travis_quirk)
radeon_dp_set_rx_power_state(connector, DP_SET_POWER_D3);
if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
atombios_set_edp_panel_power(connector,
ATOM_TRANSMITTER_ACTION_POWER_OFF);
radeon_dig_connector->edp_on = false;
}
}
if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))
atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_LCD_BLOFF, 0, 0);
break;
}
}

static void
radeon_atom_encoder_dpms_ext(struct drm_encoder *encoder,
struct drm_encoder *ext_encoder,
int mode)
{
struct drm_device *dev = encoder->dev;
struct radeon_device *rdev = dev->dev_private;

switch (mode) {
case DRM_MODE_DPMS_ON:
default:
if (ASIC_IS_DCE41(rdev) || ASIC_IS_DCE61(rdev)) {
atombios_external_encoder_setup(encoder, ext_encoder,
EXTERNAL_ENCODER_ACTION_V3_ENABLE_OUTPUT);
atombios_external_encoder_setup(encoder, ext_encoder,
EXTERNAL_ENCODER_ACTION_V3_ENCODER_BLANKING_OFF);
} else
atombios_external_encoder_setup(encoder, ext_encoder, ATOM_ENABLE);
break;
case DRM_MODE_DPMS_STANDBY:
case DRM_MODE_DPMS_SUSPEND:
case DRM_MODE_DPMS_OFF:
if (ASIC_IS_DCE41(rdev) || ASIC_IS_DCE61(rdev)) {
atombios_external_encoder_setup(encoder, ext_encoder,
EXTERNAL_ENCODER_ACTION_V3_ENCODER_BLANKING);
atombios_external_encoder_setup(encoder, ext_encoder,
EXTERNAL_ENCODER_ACTION_V3_DISABLE_OUTPUT);
} else
atombios_external_encoder_setup(encoder, ext_encoder, ATOM_DISABLE);
break;
}
}
Expand All @@ -1747,7 +1737,6 @@ radeon_atom_encoder_dpms(struct drm_encoder *encoder, int mode)
struct drm_device *dev = encoder->dev;
struct radeon_device *rdev = dev->dev_private;
struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
struct drm_encoder *ext_encoder = radeon_get_external_encoder(encoder);

DRM_DEBUG_KMS("encoder dpms %d to mode %d, devices %08x, active_devices %08x\n",
radeon_encoder->encoder_id, mode, radeon_encoder->devices,
Expand Down Expand Up @@ -1807,9 +1796,6 @@ radeon_atom_encoder_dpms(struct drm_encoder *encoder, int mode)
return;
}

if (ext_encoder)
radeon_atom_encoder_dpms_ext(encoder, ext_encoder, mode);

radeon_atombios_encoder_dpms_scratch_regs(encoder, (mode == DRM_MODE_DPMS_ON) ? true : false);

}
Expand Down

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