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From c3ea97a441c6c7754108cd41f5f88adc9218e716 Mon Sep 17 00:00:00 2001
From: Wesley Chalmers <Wesley.Chalmers@amd.com>
Date: Tue, 22 Jan 2019 18:57:06 -0500
Subject: [PATCH 1220/2940] drm/amd/display: Disable Stutter for Stereo 3D
[WHY]
Bandwidth calculation formulas currently do not take Stereo 3D + Stutter
properly into account. Disable stutter feature when we detect a Stereo
3D mode as a temporary workaround.
Change-Id: Icad94f294c662740b988592c6ed0228705b02071
Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Acked-by: Martin Leung <Martin.Leung@amd.com>
---
.../drm/amd/display/dc/dcn10/dcn10_hubbub.c | 19 ++++++++++--------
.../drm/amd/display/dc/dcn10/dcn10_hubbub.h | 2 +-
.../amd/display/dc/dcn10/dcn10_hw_sequencer.c | 20 ++++++++++++++++++-
3 files changed, 31 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c
index 5a4614c371bc..e161ad836812 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c
@@ -88,11 +88,18 @@ void hubbub1_wm_read_state(struct hubbub *hubbub,
s->dram_clk_chanage = REG_READ(DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_D);
}
-void hubbub1_disable_allow_self_refresh(struct hubbub *hubbub)
+void hubbub1_allow_self_refresh_control(struct hubbub *hubbub, bool allow)
{
struct dcn10_hubbub *hubbub1 = TO_DCN10_HUBBUB(hubbub);
- REG_UPDATE(DCHUBBUB_ARB_DRAM_STATE_CNTL,
- DCHUBBUB_ARB_ALLOW_SELF_REFRESH_FORCE_ENABLE, 0);
+
+ /*
+ * DCHUBBUB_ARB_ALLOW_SELF_REFRESH_FORCE_ENABLE = 1 means do not allow stutter
+ * DCHUBBUB_ARB_ALLOW_SELF_REFRESH_FORCE_ENABLE = 0 means allow stutter
+ */
+
+ REG_UPDATE_2(DCHUBBUB_ARB_DRAM_STATE_CNTL,
+ DCHUBBUB_ARB_ALLOW_SELF_REFRESH_FORCE_VALUE, 0,
+ DCHUBBUB_ARB_ALLOW_SELF_REFRESH_FORCE_ENABLE, !allow);
}
bool hububu1_is_allow_self_refresh_enabled(struct hubbub *hubbub)
@@ -262,8 +269,6 @@ void hubbub1_program_watermarks(
bool safe_to_lower)
{
struct dcn10_hubbub *hubbub1 = TO_DCN10_HUBBUB(hubbub);
-
- uint32_t force_en = hubbub1->base.ctx->dc->debug.disable_stutter ? 1 : 0;
/*
* Need to clamp to max of the register values (i.e. no wrap)
* for dcn1, all wm registers are 21-bit wide
@@ -537,9 +542,7 @@ void hubbub1_program_watermarks(
REG_UPDATE(DCHUBBUB_ARB_DF_REQ_OUTSTAND,
DCHUBBUB_ARB_MIN_REQ_OUTSTAND, 68);
- REG_UPDATE_2(DCHUBBUB_ARB_DRAM_STATE_CNTL,
- DCHUBBUB_ARB_ALLOW_SELF_REFRESH_FORCE_VALUE, 0,
- DCHUBBUB_ARB_ALLOW_SELF_REFRESH_FORCE_ENABLE, force_en);
+ hubbub1_allow_self_refresh_control(hubbub, !hubbub->ctx->dc->debug.disable_stutter);
#if 0
REG_UPDATE_2(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL,
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 c681e1cc9290..9cd4a5194154 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.h
@@ -204,7 +204,7 @@ void hubbub1_program_watermarks(
unsigned int refclk_mhz,
bool safe_to_lower);
-void hubbub1_disable_allow_self_refresh(struct hubbub *hubbub);
+void hubbub1_allow_self_refresh_control(struct hubbub *hubbub, bool allow);
bool hububu1_is_allow_self_refresh_enabled(struct hubbub *hubub);
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index 2ec8badd86c1..2d7096bb0146 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -1011,7 +1011,7 @@ static void dcn10_init_hw(struct dc *dc)
*/
if (allow_self_fresh_force_enable == false &&
hububu1_is_allow_self_refresh_enabled(dc->res_pool->hubbub))
- hubbub1_disable_allow_self_refresh(dc->res_pool->hubbub);
+ hubbub1_allow_self_refresh_control(dc->res_pool->hubbub, true);
disable_vga(dc->hwseq);
}
@@ -2383,6 +2383,22 @@ static void dcn10_apply_ctx_for_surface(
hubbub1_wm_change_req_wa(dc->res_pool->hubbub);
}
+static void dcn10_stereo_hw_frame_pack_wa(struct dc *dc, struct dc_state *context)
+{
+ uint8_t i;
+
+ for (i = 0; i < context->stream_count; i++) {
+ if (context->streams[i]->timing.timing_3d_format
+ == TIMING_3D_FORMAT_HW_FRAME_PACKING) {
+ /*
+ * Disable stutter
+ */
+ hubbub1_allow_self_refresh_control(dc->res_pool->hubbub, false);
+ break;
+ }
+ }
+}
+
static void dcn10_prepare_bandwidth(
struct dc *dc,
struct dc_state *context)
@@ -2404,6 +2420,7 @@ static void dcn10_prepare_bandwidth(
&context->bw.dcn.watermarks,
dc->res_pool->ref_clock_inKhz / 1000,
true);
+ dcn10_stereo_hw_frame_pack_wa(dc, context);
if (dc->debug.pplib_wm_report_mode == WM_REPORT_OVERRIDE)
dcn_bw_notify_pplib_of_wm_ranges(dc);
@@ -2433,6 +2450,7 @@ static void dcn10_optimize_bandwidth(
&context->bw.dcn.watermarks,
dc->res_pool->ref_clock_inKhz / 1000,
true);
+ dcn10_stereo_hw_frame_pack_wa(dc, context);
if (dc->debug.pplib_wm_report_mode == WM_REPORT_OVERRIDE)
dcn_bw_notify_pplib_of_wm_ranges(dc);
--
2.17.1
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