diff options
| author | Joseph Gravenor <joseph.gravenor@amd.com> | 2020-01-28 10:38:22 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-02-06 15:04:38 -0500 |
| commit | 896dace8eca843100bef9b7482c3d6243b4601fb (patch) | |
| tree | 1fa87a02a8e2bcb9b9ff1bbc0b21808224d5c320 /drivers/gpu/drm/amd | |
| parent | 15add0c2fed34adf02c8eccb399482b6e7b369bf (diff) | |
drm/amd/display: turn off the mst hub before we do detection
[why]
not turning off the mst hub before detection on reboot
causes us to not be able to light up displays with mst hook
[how]
on hw init, see if any displays are lit up. if so, turn them off
Signed-off-by: Joseph Gravenor <joseph.gravenor@amd.com>
Reviewed-by: Eric Yang <eric.yang2@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c index 0225f8d8bb82..42fcfee2c31b 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c @@ -48,8 +48,8 @@ #include "dc_link_dp.h" #include "dccg.h" #include "clk_mgr.h" - - +#include "link_hwss.h" +#include "dpcd_defs.h" #include "dsc.h" #define DC_LOGGER_INIT(logger) @@ -1322,6 +1322,24 @@ void dcn10_init_hw(struct dc *dc) if (hws->funcs.dsc_pg_control != NULL) hws->funcs.dsc_pg_control(hws, res_pool->dscs[i]->inst, false); + /* we want to turn off all dp displays before doing detection */ + if (dc->config.power_down_display_on_boot) { + 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_DISPLAY_PORT) { + 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) { + dp_receiver_power_ctrl(dc->links[i], false); + } + } + } + /* If taking control over from VBIOS, we may want to optimize our first * mode set, so we need to skip powering down pipes until we know which * pipes we want to use. |