From: Dmytro Laktyushkin Date: Fri, 25 Jun 2021 13:09:09 +0000 (-0400) Subject: drm/amd/display: remove compbuf size wait X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=dce7e5318d4e599f3422b3fb327a902a89096f1e;p=linux.git drm/amd/display: remove compbuf size wait This tends to take miliseconds in certain scenarios and we'd rather not wait that long. Due to how this interacts with det size update and locking waiting should not be necessary as compbuf updates before unlock. Add a watch for config error instead as that is something we actually do care about. Acked-by: Rodrigo Siqueira Signed-off-by: Dmytro Laktyushkin Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.h b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.h index 32fb22daf4a21..39485bdeb90ec 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.h +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.h @@ -319,6 +319,7 @@ struct dcn_hubbub_registers { type DET3_SIZE_CURRENT;\ type COMPBUF_SIZE;\ type COMPBUF_SIZE_CURRENT;\ + type CONFIG_ERROR;\ type COMPBUF_RESERVED_SPACE_64B;\ type COMPBUF_RESERVED_SPACE_ZS;\ type DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_Z8_A;\ diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubbub.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubbub.c index b5a7fa67958b4..2043528d3490a 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubbub.c +++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubbub.c @@ -124,8 +124,8 @@ static void dcn31_program_compbuf_size(struct hubbub *hubbub, unsigned int compb ASSERT(hubbub2->det0_size + hubbub2->det1_size + hubbub2->det2_size + hubbub2->det3_size + compbuf_size_segments <= hubbub2->crb_size_segs); REG_UPDATE(DCHUBBUB_COMPBUF_CTRL, COMPBUF_SIZE, compbuf_size_segments); - REG_WAIT(DCHUBBUB_COMPBUF_CTRL, COMPBUF_SIZE_CURRENT, compbuf_size_segments, 1, 100); hubbub2->compbuf_size_segments = compbuf_size_segments; + ASSERT(REG_GET(DCHUBBUB_COMPBUF_CTRL, CONFIG_ERROR, &compbuf_size_segments) && !compbuf_size_segments); } } diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubbub.h b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubbub.h index 298858d8259be..e3a654bf04e86 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubbub.h +++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubbub.h @@ -98,6 +98,7 @@ HUBBUB_SF(DCHUBBUB_DET3_CTRL, DET3_SIZE_CURRENT, mask_sh),\ HUBBUB_SF(DCHUBBUB_COMPBUF_CTRL, COMPBUF_SIZE, mask_sh),\ HUBBUB_SF(DCHUBBUB_COMPBUF_CTRL, COMPBUF_SIZE_CURRENT, mask_sh),\ + HUBBUB_SF(DCHUBBUB_COMPBUF_CTRL, CONFIG_ERROR, mask_sh),\ HUBBUB_SF(COMPBUF_RESERVED_SPACE, COMPBUF_RESERVED_SPACE_64B, mask_sh),\ HUBBUB_SF(COMPBUF_RESERVED_SPACE, COMPBUF_RESERVED_SPACE_ZS, mask_sh),\ HUBBUB_SF(DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_Z8_A, DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_Z8_A, mask_sh), \