From: Bhawanpreet Lakha <bhawanpreet.lakha@xxxxxxx> [Why&How] Some panels don't meet the stutter threshold (4k etc), this leads to power regressions. Allow z8 for panels that don't meet the threshold but support PSR/replay Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx> Acked-by: Tom Chung <chiahsuan.chung@xxxxxxx> Signed-off-by: Bhawanpreet Lakha <bhawanpreet.lakha@xxxxxxx> --- drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.c | 2 +- drivers/gpu/drm/amd/display/dc/dml2/dml2_wrapper.c | 9 +++++++++ 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.c index 33ea89f20449..714c2fe03c5f 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.c @@ -603,7 +603,7 @@ void dcn35_decide_zstate_support(struct dc *dc, struct dc_state *context) if (is_pwrseq0 && allow_z10) support = DCN_ZSTATE_SUPPORT_ALLOW; else if (is_pwrseq0 && (is_psr || is_replay)) - support = allow_z8 ? DCN_ZSTATE_SUPPORT_ALLOW_Z8_Z10_ONLY : DCN_ZSTATE_SUPPORT_ALLOW_Z10_ONLY; + support = DCN_ZSTATE_SUPPORT_ALLOW_Z8_Z10_ONLY; else if (allow_z8) support = DCN_ZSTATE_SUPPORT_ALLOW_Z8_ONLY; diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml2_wrapper.c b/drivers/gpu/drm/amd/display/dc/dml2/dml2_wrapper.c index 72cca367062e..e2489eaabb20 100644 --- a/drivers/gpu/drm/amd/display/dc/dml2/dml2_wrapper.c +++ b/drivers/gpu/drm/amd/display/dc/dml2/dml2_wrapper.c @@ -570,6 +570,7 @@ static bool dml2_validate_and_build_resource(const struct dc *in_dc, struct dc_s struct dml2_dcn_clocks out_clks; unsigned int result = 0; bool need_recalculation = false; + uint32_t cstate_enter_plus_exit_z8_ns; if (!context || context->stream_count == 0) return true; @@ -641,6 +642,14 @@ static bool dml2_validate_and_build_resource(const struct dc *in_dc, struct dc_s dml2_extract_watermark_set(&context->bw_ctx.bw.dcn.watermarks.d, &dml2->v20.dml_core_ctx); //copy for deciding zstate use context->bw_ctx.dml.vba.StutterPeriod = context->bw_ctx.dml2->v20.dml_core_ctx.mp.StutterPeriod; + + cstate_enter_plus_exit_z8_ns = context->bw_ctx.bw.dcn.watermarks.a.cstate_pstate.cstate_enter_plus_exit_z8_ns; + + if (context->bw_ctx.dml.vba.StutterPeriod < in_dc->debug.minimum_z8_residency_time && + cstate_enter_plus_exit_z8_ns < in_dc->debug.minimum_z8_residency_time * 1000) + cstate_enter_plus_exit_z8_ns = in_dc->debug.minimum_z8_residency_time * 1000; + + context->bw_ctx.bw.dcn.watermarks.a.cstate_pstate.cstate_enter_plus_exit_z8_ns = cstate_enter_plus_exit_z8_ns; } return result; -- 2.34.1
