diff options
| author | Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> | 2020-03-05 14:43:00 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-03-31 12:26:14 -0400 |
| commit | 8f43965f79ea7eabd2ea1a341670630ab4d0d70e (patch) | |
| tree | 06ffb456f633e52fd8af611fbf948c9cad52915a /drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.h | |
| parent | cbec6477ced5638c6121ee1110f7f457575be954 (diff) | |
drm/amd/display: Use double buffered DRR timing update by default
[Why]
For some monitors extreme flickering can occur while using LFC for if
we're not doing the DRR timing update for V_TOTAL_MIN / V_TOTAL_MAX at
the DP start of frame.
Hardware can default to any time in the frame which isn't the behavior
we want.
[How]
Add a new function for setting the double buffering mode for DRR timing.
Default to DP start of frame double buffering on timing generator init.
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.h b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.h index f277656d5464..9a459a8fe8a0 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.h +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.h @@ -185,6 +185,7 @@ struct dcn_optc_registers { SF(OTG0_OTG_GLOBAL_CONTROL0, OTG_MASTER_UPDATE_LOCK_SEL, mask_sh),\ SF(OTG0_OTG_DOUBLE_BUFFER_CONTROL, OTG_UPDATE_PENDING, mask_sh),\ SF(OTG0_OTG_DOUBLE_BUFFER_CONTROL, OTG_BLANK_DATA_DOUBLE_BUFFER_EN, mask_sh),\ + SF(OTG0_OTG_DOUBLE_BUFFER_CONTROL, OTG_RANGE_TIMING_DBUF_UPDATE_MODE, mask_sh),\ SF(OTG0_OTG_H_TOTAL, OTG_H_TOTAL, mask_sh),\ SF(OTG0_OTG_H_BLANK_START_END, OTG_H_BLANK_START, mask_sh),\ SF(OTG0_OTG_H_BLANK_START_END, OTG_H_BLANK_END, mask_sh),\ @@ -643,6 +644,8 @@ bool optc1_is_optc_underflow_occurred(struct timing_generator *optc); void optc1_set_blank_data_double_buffer(struct timing_generator *optc, bool enable); +void optc1_set_timing_double_buffer(struct timing_generator *optc, bool enable); + bool optc1_get_otg_active_size(struct timing_generator *optc, uint32_t *otg_active_width, uint32_t *otg_active_height); |