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drm/radeon/kms: fix eDP panel power function

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need to wait for the panel to power up.

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 04:34:19 -04:00
committed by Dave Airlie
parent 3a5f4a21c5
commit 2dafb74d63
2 changed files with 20 additions and 6 deletions
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24
drivers/gpu/drm/radeon/radeon_encoders.c
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@@ -1095,7 +1095,7 @@ atombios_dig_transmitter_setup(struct drm_encoder *encoder, int action, uint8_t
atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
}
void
bool
atombios_set_edp_panel_power(struct drm_connector *connector, int action)
{
struct radeon_connector *radeon_connector = to_radeon_connector(connector);
@@ -1106,23 +1106,37 @@ atombios_set_edp_panel_power(struct drm_connector *connector, int action)
uint8_t frev, crev;
if (connector->connector_type != DRM_MODE_CONNECTOR_eDP)
return;
goto done;
if (!ASIC_IS_DCE4(rdev))
return;
goto done;
if ((action != ATOM_TRANSMITTER_ACTION_POWER_ON) &&
(action != ATOM_TRANSMITTER_ACTION_POWER_OFF))
return;
goto done;
if (!atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev, &crev))
return;
goto done;
memset(&args, 0, sizeof(args));
args.v1.ucAction = action;
atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
/* wait for the panel to power up */
if (action == ATOM_TRANSMITTER_ACTION_POWER_ON) {
int i;
for (i = 0; i < 300; i++) {
if (radeon_hpd_sense(rdev, radeon_connector->hpd.hpd))
return true;
mdelay(1);
}
return false;
}
done:
return true;
}
union external_encoder_control {