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From ea7bd84e3546188cac30e511fa1d1fb65c839b81 Mon Sep 17 00:00:00 2001
From: Yongqiang Sun <yongqiang.sun@amd.com>
Date: Wed, 27 Sep 2017 17:28:11 -0400
Subject: [PATCH 2517/4131] drm/amd/display: Enable double buffer as per
vertical interrupt enabled.
Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
---
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.c | 11 +++++++++++
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.h | 4 ++++
2 files changed, 15 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.c
index 7cd10cbc..8dbc82f 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.c
@@ -299,6 +299,17 @@ static void tgn10_program_timing(
static void tgn10_unblank_crtc(struct timing_generator *tg)
{
struct dcn10_timing_generator *tgn10 = DCN10TG_FROM_TG(tg);
+ uint32_t vertical_interrupt_enable = 0;
+
+ REG_GET(OTG_VERTICAL_INTERRUPT2_CONTROL,
+ OTG_VERTICAL_INTERRUPT2_INT_ENABLE, &vertical_interrupt_enable);
+
+ /* temporary work around for vertical interrupt, once vertical interrupt enabled,
+ * this check will be removed.
+ */
+ if (vertical_interrupt_enable)
+ REG_UPDATE(OTG_DOUBLE_BUFFER_CONTROL,
+ OTG_BLANK_DATA_DOUBLE_BUFFER_EN, 1);
REG_UPDATE_2(OTG_BLANK_CONTROL,
OTG_BLANK_DATA_EN, 0,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.h b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.h
index 0826d73..7d4818d 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.h
@@ -65,6 +65,7 @@
SRI(OTG_NOM_VERT_POSITION, OTG, inst),\
SRI(OTG_BLACK_COLOR, OTG, inst),\
SRI(OTG_CLOCK_CONTROL, OTG, inst),\
+ SRI(OTG_VERTICAL_INTERRUPT2_CONTROL, OTG, inst),\
SRI(OTG_VERTICAL_INTERRUPT2_POSITION, OTG, inst),\
SRI(OPTC_INPUT_CLOCK_CONTROL, ODM, inst),\
SRI(OPTC_DATA_SOURCE_SELECT, ODM, inst),\
@@ -117,6 +118,7 @@ struct dcn_tg_registers {
uint32_t OTG_TEST_PATTERN_CONTROL;
uint32_t OTG_TEST_PATTERN_COLOR;
uint32_t OTG_CLOCK_CONTROL;
+ uint32_t OTG_VERTICAL_INTERRUPT2_CONTROL;
uint32_t OTG_VERTICAL_INTERRUPT2_POSITION;
uint32_t OPTC_INPUT_CLOCK_CONTROL;
uint32_t OPTC_DATA_SOURCE_SELECT;
@@ -196,6 +198,7 @@ struct dcn_tg_registers {
SF(OTG0_OTG_CLOCK_CONTROL, OTG_CLOCK_EN, mask_sh),\
SF(OTG0_OTG_CLOCK_CONTROL, OTG_CLOCK_ON, mask_sh),\
SF(OTG0_OTG_CLOCK_CONTROL, OTG_CLOCK_GATE_DIS, mask_sh),\
+ SF(OTG0_OTG_VERTICAL_INTERRUPT2_CONTROL, OTG_VERTICAL_INTERRUPT2_INT_ENABLE, mask_sh),\
SF(OTG0_OTG_VERTICAL_INTERRUPT2_POSITION, OTG_VERTICAL_INTERRUPT2_LINE_START, mask_sh),\
SF(ODM0_OPTC_INPUT_CLOCK_CONTROL, OPTC_INPUT_CLK_EN, mask_sh),\
SF(ODM0_OPTC_INPUT_CLOCK_CONTROL, OPTC_INPUT_CLK_ON, mask_sh),\
@@ -302,6 +305,7 @@ struct dcn_tg_registers {
type OTG_CLOCK_EN;\
type OTG_CLOCK_ON;\
type OTG_CLOCK_GATE_DIS;\
+ type OTG_VERTICAL_INTERRUPT2_INT_ENABLE;\
type OTG_VERTICAL_INTERRUPT2_LINE_START;\
type OPTC_INPUT_CLK_EN;\
type OPTC_INPUT_CLK_ON;\
--
2.7.4
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