AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2025-01-24 01:19:23 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

drm/amd/display: Revert to old formula in set_vtg_params

Browse Source 
[Why]
New formula + cursor change causing underflow
on certain configs

[How]
Rever to old formula

Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alvin Lee 2020-04-05 16:41:05 -04:00 committed by Alex Deucher
parent cdde482caa
commit a1a0e61f3c
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c
View File

@ -299,6 +299,7 @@ void optc1_set_vtg_params(struct timing_generator *optc,
uint32_t asic_blank_end;
uint32_t v_init;
uint32_t v_fp2 = 0;
int32_t vertical_line_start;
struct optc *optc1 = DCN10TG_FROM_TG(optc);
@ -315,8 +316,9 @@ void optc1_set_vtg_params(struct timing_generator *optc,
patched_crtc_timing.v_border_top;
/* if VSTARTUP is before VSYNC, FP2 is the offset, otherwise 0 */
if (optc1->vstartup_start > asic_blank_end)
v_fp2 = optc1->vstartup_start - asic_blank_end;
vertical_line_start = asic_blank_end - optc1->vstartup_start + 1;
if (vertical_line_start < 0)
v_fp2 = -vertical_line_start;
/* Interlace */
if (REG(OTG_INTERLACE_CONTROL)) {