diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index 31ffb961e18b..38a458141791 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -2126,6 +2126,26 @@ void dc_link_blank_all_dp_displays(struct dc *dc) } +void dc_link_blank_all_edp_displays(struct dc *dc) +{ + unsigned int i; + uint8_t dpcd_power_state = '\0'; + enum dc_status status = DC_ERROR_UNEXPECTED; + + for (i = 0; i < dc->link_count; i++) { + if ((dc->links[i]->connector_signal != SIGNAL_TYPE_EDP) || + (!dc->links[i]->edp_sink_present)) + continue; + + /* if any of the displays are lit up turn them off */ + status = core_link_read_dpcd(dc->links[i], DP_SET_POWER, + &dpcd_power_state, sizeof(dpcd_power_state)); + + if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) + dc_link_blank_dp_stream(dc->links[i], true); + } +} + void dc_link_blank_dp_stream(struct dc_link *link, bool hw_init) { unsigned int j; |