From: Ryan Lin <[email protected]> [Why] Needs more frames waiting before the PSR_Exit sending for the specific TCON.
[How] Add relock_delay_frame_cnt to control how many frames waiting are needed before the PSR_Exit sending. The default value is 0. The Driver side can set this variable for specific TCONs. Reviewed-by: Robin Chen <[email protected]> Acked-by: Alan Liu <[email protected]> Signed-off-by: Ryan Lin <[email protected]> --- drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c | 5 +++++ drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h | 6 +++++- 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c b/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c index cda1592c3a5b..2d3201b77d6a 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c @@ -413,6 +413,11 @@ static bool dmub_psr_copy_settings(struct dmub_psr *dmub, else copy_settings_data->debug.bitfields.force_wakeup_by_tps3 = 0; + //WA for PSR1 on specific TCON, require frame delay for frame re-lock + copy_settings_data->relock_delay_frame_cnt = 0; + if (link->dpcd_caps.sink_dev_id == DP_BRANCH_DEVICE_ID_001CF8) + copy_settings_data->relock_delay_frame_cnt = 2; + dc_dmub_srv_cmd_queue(dc->dmub_srv, &cmd); dc_dmub_srv_cmd_execute(dc->dmub_srv); dc_dmub_srv_wait_idle(dc->dmub_srv); diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h index 9df330c86a55..34b03bc7f838 100644 --- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h +++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h @@ -1876,10 +1876,14 @@ struct dmub_cmd_psr_copy_settings_data { * Use FSM state for PSR power up/down */ uint8_t use_phy_fsm; + /** + * frame delay for frame re-lock + */ + uint8_t relock_delay_frame_cnt; /** * Explicit padding to 2 byte boundary. */ - uint8_t pad3[2]; + uint8_t pad3; }; /** -- 2.25.1
