diff options
| author | Michael Strauss <michael.strauss@amd.com> | 2021-10-06 15:50:10 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-10-28 14:26:15 -0400 |
| commit | 5fdccd5b88410b6be7f19f3c91ef112d174b1564 (patch) | |
| tree | f6bc8b15ac4e6ad90d0b5f317f70337a43f77d5e /drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c | |
| parent | 5ffb5267bdc957de827bdd89ef95730d94579ae6 (diff) | |
drm/amd/display: Defer GAMCOR and DSCL power down sequence to vupdate
[WHY]
Every other CM LUT power down sequence is deferred to next vupdate as
memory powerdown updates immediately while selecting LUTs is double
buffered. Previous update to defer LUT power down missed GAMCOR and
DSCL, causing some visible flicker when entering/exiting fullscreen
video playback.
[HOW]
Update dpp deferred update loop to check for valid DPPs in res_pool
instead of referencing dcn_ip which turns out to not be populated during
runtime. Move GAMCOR and DSCL powerdown to dpp deferred updates.
Reviewed-by: Haonan Wang <Haonan.Wang2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Acked-by: Agustin Gutierrez <agustin.gutierrez@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c index ef5f6da5248a..c1d967ed6551 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c +++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c @@ -494,6 +494,20 @@ void dpp3_deferred_update( int bypass_state; struct dcn3_dpp *dpp = TO_DCN30_DPP(dpp_base); + if (dpp_base->deferred_reg_writes.bits.disable_dscl) { + REG_UPDATE(DSCL_MEM_PWR_CTRL, LUT_MEM_PWR_FORCE, 3); + dpp_base->deferred_reg_writes.bits.disable_dscl = false; + } + + if (dpp_base->deferred_reg_writes.bits.disable_gamcor) { + REG_GET(CM_GAMCOR_CONTROL, CM_GAMCOR_MODE_CURRENT, &bypass_state); + if (bypass_state == 0) { // only program if bypass was latched + REG_UPDATE(CM_MEM_PWR_CTRL, GAMCOR_MEM_PWR_FORCE, 3); + } else + ASSERT(0); // LUT select was updated again before vupdate + dpp_base->deferred_reg_writes.bits.disable_gamcor = false; + } + if (dpp_base->deferred_reg_writes.bits.disable_blnd_lut) { REG_GET(CM_BLNDGAM_CONTROL, CM_BLNDGAM_MODE_CURRENT, &bypass_state); if (bypass_state == 0) { // only program if bypass was latched |