Merge tag 'amd-drm-fixes-5.7-2020-05-21' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

amd-drm-fixes-5.7-2020-05-21:

amdgpu:
- DP fix
- Floating point fix
- Fix cursor stutter issue

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200521222415.4122-1-alexander.deucher@amd.com

drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c

@@ -220,6 +220,30 @@ static enum dpcd_training_patterns
 	return dpcd_tr_pattern;
 }
 
+static uint8_t dc_dp_initialize_scrambling_data_symbols(
+	struct dc_link *link,
+	enum dc_dp_training_pattern pattern)
+{
+	uint8_t disable_scrabled_data_symbols = 0;
+
+	switch (pattern) {
+	case DP_TRAINING_PATTERN_SEQUENCE_1:
+	case DP_TRAINING_PATTERN_SEQUENCE_2:
+	case DP_TRAINING_PATTERN_SEQUENCE_3:
+		disable_scrabled_data_symbols = 1;
+		break;
+	case DP_TRAINING_PATTERN_SEQUENCE_4:
+		disable_scrabled_data_symbols = 0;
+		break;
+	default:
+		ASSERT(0);
+		DC_LOG_HW_LINK_TRAINING("%s: Invalid HW Training pattern: %d\n",
+			__func__, pattern);
+		break;
+	}
+	return disable_scrabled_data_symbols;
+}
+
 static inline bool is_repeater(struct dc_link *link, uint32_t offset)
 {
 	return (!link->is_lttpr_mode_transparent && offset != 0);
@@ -252,6 +276,9 @@ static void dpcd_set_lt_pattern_and_lane_settings(
 	dpcd_pattern.v1_4.TRAINING_PATTERN_SET =
 		dc_dp_training_pattern_to_dpcd_training_pattern(link, pattern);
 
+	dpcd_pattern.v1_4.SCRAMBLING_DISABLE =
+		dc_dp_initialize_scrambling_data_symbols(link, pattern);
+
 	dpcd_lt_buffer[DP_TRAINING_PATTERN_SET - DP_TRAINING_PATTERN_SET]
 		= dpcd_pattern.raw;
 

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c

@@ -1625,12 +1625,79 @@ void dcn10_pipe_control_lock(
 		hws->funcs.verify_allow_pstate_change_high(dc);
 }
 
+/**
+ * delay_cursor_until_vupdate() - Delay cursor update if too close to VUPDATE.
+ *
+ * Software keepout workaround to prevent cursor update locking from stalling
+ * out cursor updates indefinitely or from old values from being retained in
+ * the case where the viewport changes in the same frame as the cursor.
+ *
+ * The idea is to calculate the remaining time from VPOS to VUPDATE. If it's
+ * too close to VUPDATE, then stall out until VUPDATE finishes.
+ *
+ * TODO: Optimize cursor programming to be once per frame before VUPDATE
+ *       to avoid the need for this workaround.
+ */
+static void delay_cursor_until_vupdate(struct dc *dc, struct pipe_ctx *pipe_ctx)
+{
+	struct dc_stream_state *stream = pipe_ctx->stream;
+	struct crtc_position position;
+	uint32_t vupdate_start, vupdate_end;
+	unsigned int lines_to_vupdate, us_to_vupdate, vpos;
+	unsigned int us_per_line, us_vupdate;
+
+	if (!dc->hwss.calc_vupdate_position || !dc->hwss.get_position)
+		return;
+
+	if (!pipe_ctx->stream_res.stream_enc || !pipe_ctx->stream_res.tg)
+		return;
+
+	dc->hwss.calc_vupdate_position(dc, pipe_ctx, &vupdate_start,
+				       &vupdate_end);
+
+	dc->hwss.get_position(&pipe_ctx, 1, &position);
+	vpos = position.vertical_count;
+
+	/* Avoid wraparound calculation issues */
+	vupdate_start += stream->timing.v_total;
+	vupdate_end += stream->timing.v_total;
+	vpos += stream->timing.v_total;
+
+	if (vpos <= vupdate_start) {
+		/* VPOS is in VACTIVE or back porch. */
+		lines_to_vupdate = vupdate_start - vpos;
+	} else if (vpos > vupdate_end) {
+		/* VPOS is in the front porch. */
+		return;
+	} else {
+		/* VPOS is in VUPDATE. */
+		lines_to_vupdate = 0;
+	}
+
+	/* Calculate time until VUPDATE in microseconds. */
+	us_per_line =
+		stream->timing.h_total * 10000u / stream->timing.pix_clk_100hz;
+	us_to_vupdate = lines_to_vupdate * us_per_line;
+
+	/* 70 us is a conservative estimate of cursor update time*/
+	if (us_to_vupdate > 70)
+		return;
+
+	/* Stall out until the cursor update completes. */
+	us_vupdate = (vupdate_end - vupdate_start + 1) * us_per_line;
+	udelay(us_to_vupdate + us_vupdate);
+}
+
 void dcn10_cursor_lock(struct dc *dc, struct pipe_ctx *pipe, bool lock)
 {
 	/* cursor lock is per MPCC tree, so only need to lock one pipe per stream */
 	if (!pipe || pipe->top_pipe)
 		return;
 
+	/* Prevent cursor lock from stalling out cursor updates. */
+	if (lock)
+		delay_cursor_until_vupdate(dc, pipe);
+
 	dc->res_pool->mpc->funcs->cursor_lock(dc->res_pool->mpc,
 			pipe->stream_res.opp->inst, lock);
 }
@@ -3236,7 +3303,7 @@ int dcn10_get_vupdate_offset_from_vsync(struct pipe_ctx *pipe_ctx)
 	return vertical_line_start;
 }
 
-static void dcn10_calc_vupdate_position(
+void dcn10_calc_vupdate_position(
 		struct dc *dc,
 		struct pipe_ctx *pipe_ctx,
 		uint32_t *start_line,

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.h

@@ -34,6 +34,11 @@ struct dc;
 void dcn10_hw_sequencer_construct(struct dc *dc);
 
 int dcn10_get_vupdate_offset_from_vsync(struct pipe_ctx *pipe_ctx);
+void dcn10_calc_vupdate_position(
+		struct dc *dc,
+		struct pipe_ctx *pipe_ctx,
+		uint32_t *start_line,
+		uint32_t *end_line);
 void dcn10_setup_vupdate_interrupt(struct dc *dc, struct pipe_ctx *pipe_ctx);
 enum dc_status dcn10_enable_stream_timing(
 		struct pipe_ctx *pipe_ctx,

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_init.c

@@ -72,6 +72,7 @@ static const struct hw_sequencer_funcs dcn10_funcs = {
 	.set_clock = dcn10_set_clock,
 	.get_clock = dcn10_get_clock,
 	.get_vupdate_offset_from_vsync = dcn10_get_vupdate_offset_from_vsync,
+	.calc_vupdate_position = dcn10_calc_vupdate_position,
 };
 
 static const struct hwseq_private_funcs dcn10_private_funcs = {

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_init.c

@@ -83,6 +83,7 @@ static const struct hw_sequencer_funcs dcn20_funcs = {
 	.init_vm_ctx = dcn20_init_vm_ctx,
 	.set_flip_control_gsl = dcn20_set_flip_control_gsl,
 	.get_vupdate_offset_from_vsync = dcn10_get_vupdate_offset_from_vsync,
+	.calc_vupdate_position = dcn10_calc_vupdate_position,
 };
 
 static const struct hwseq_private_funcs dcn20_private_funcs = {

drivers/gpu/drm/amd/display/dc/dcn21/dcn21_init.c

@@ -86,6 +86,7 @@ static const struct hw_sequencer_funcs dcn21_funcs = {
 	.optimize_pwr_state = dcn21_optimize_pwr_state,
 	.exit_optimized_pwr_state = dcn21_exit_optimized_pwr_state,
 	.get_vupdate_offset_from_vsync = dcn10_get_vupdate_offset_from_vsync,
+	.calc_vupdate_position = dcn10_calc_vupdate_position,
 	.set_cursor_position = dcn10_set_cursor_position,
 	.set_cursor_attribute = dcn10_set_cursor_attribute,
 	.set_cursor_sdr_white_level = dcn10_set_cursor_sdr_white_level,

drivers/gpu/drm/amd/display/dc/dml/Makefile

@@ -63,10 +63,8 @@ CFLAGS_$(AMDDALPATH)/dc/dml/dcn21/display_rq_dlg_calc_21.o := $(dml_ccflags)
 endif
 CFLAGS_$(AMDDALPATH)/dc/dml/dml1_display_rq_dlg_calc.o := $(dml_ccflags)
 CFLAGS_$(AMDDALPATH)/dc/dml/display_rq_dlg_helpers.o := $(dml_ccflags)
-CFLAGS_$(AMDDALPATH)/dc/dml/dml_common_defs.o := $(dml_ccflags)
 
 DML = display_mode_lib.o display_rq_dlg_helpers.o dml1_display_rq_dlg_calc.o \
-	dml_common_defs.o
 
 ifdef CONFIG_DRM_AMD_DC_DCN
 DML += display_mode_vba.o dcn20/display_rq_dlg_calc_20.o dcn20/display_mode_vba_20.o

drivers/gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20.h

@@ -26,7 +26,6 @@
 #ifndef __DML20_DISPLAY_RQ_DLG_CALC_H__
 #define __DML20_DISPLAY_RQ_DLG_CALC_H__
 
-#include "../dml_common_defs.h"
 #include "../display_rq_dlg_helpers.h"
 
 struct display_mode_lib;

drivers/gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20v2.h

@@ -26,7 +26,6 @@
 #ifndef __DML20V2_DISPLAY_RQ_DLG_CALC_H__
 #define __DML20V2_DISPLAY_RQ_DLG_CALC_H__
 
-#include "../dml_common_defs.h"
 #include "../display_rq_dlg_helpers.h"
 
 struct display_mode_lib;

drivers/gpu/drm/amd/display/dc/dml/dcn21/display_rq_dlg_calc_21.h

@@ -26,7 +26,7 @@
 #ifndef __DML21_DISPLAY_RQ_DLG_CALC_H__
 #define __DML21_DISPLAY_RQ_DLG_CALC_H__
 
-#include "../dml_common_defs.h"
+#include "dm_services.h"
 #include "../display_rq_dlg_helpers.h"
 
 struct display_mode_lib;

drivers/gpu/drm/amd/display/dc/dml/display_mode_lib.h

@@ -25,8 +25,10 @@
 #ifndef __DISPLAY_MODE_LIB_H__
 #define __DISPLAY_MODE_LIB_H__
 
-
-#include "dml_common_defs.h"
+#include "dm_services.h"
+#include "dc_features.h"
+#include "display_mode_structs.h"
+#include "display_mode_enums.h"
 #include "display_mode_vba.h"
 
 enum dml_project {

drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h

@@ -27,8 +27,6 @@
 #ifndef __DML2_DISPLAY_MODE_VBA_H__
 #define __DML2_DISPLAY_MODE_VBA_H__
 
-#include "dml_common_defs.h"
-
 struct display_mode_lib;
 
 void ModeSupportAndSystemConfiguration(struct display_mode_lib *mode_lib);

drivers/gpu/drm/amd/display/dc/dml/display_rq_dlg_helpers.h

@@ -26,7 +26,6 @@
 #ifndef __DISPLAY_RQ_DLG_HELPERS_H__
 #define __DISPLAY_RQ_DLG_HELPERS_H__
 
-#include "dml_common_defs.h"
 #include "display_mode_lib.h"
 
 /* Function: Printer functions

drivers/gpu/drm/amd/display/dc/dml/dml1_display_rq_dlg_calc.h

@@ -26,8 +26,6 @@
 #ifndef __DISPLAY_RQ_DLG_CALC_H__
 #define __DISPLAY_RQ_DLG_CALC_H__
 
-#include "dml_common_defs.h"
-
 struct display_mode_lib;
 
 #include "display_rq_dlg_helpers.h"

drivers/gpu/drm/amd/display/dc/dml/dml_common_defs.c

@@ -1,43 +0,0 @@
-/*
- * Copyright 2017 Advanced Micro Devices, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- *
- * Authors: AMD
- *
- */
-
-#include "dml_common_defs.h"
-#include "dcn_calc_math.h"
-
-#include "dml_inline_defs.h"
-
-double dml_round(double a)
-{
-	double round_pt = 0.5;
-	double ceil = dml_ceil(a, 1);
-	double floor = dml_floor(a, 1);
-
-	if (a - floor >= round_pt)
-		return ceil;
-	else
-		return floor;
-}
-
-

drivers/gpu/drm/amd/display/dc/dml/dml_common_defs.h

@@ -1,37 +0,0 @@
-/*
- * Copyright 2017 Advanced Micro Devices, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- *
- * Authors: AMD
- *
- */
-
-#ifndef __DC_COMMON_DEFS_H__
-#define __DC_COMMON_DEFS_H__
-
-#include "dm_services.h"
-#include "dc_features.h"
-#include "display_mode_structs.h"
-#include "display_mode_enums.h"
-
-
-double dml_round(double a);
-
-#endif /* __DC_COMMON_DEFS_H__ */

drivers/gpu/drm/amd/display/dc/dml/dml_inline_defs.h

@@ -26,7 +26,6 @@
 #ifndef __DML_INLINE_DEFS_H__
 #define __DML_INLINE_DEFS_H__
 
-#include "dml_common_defs.h"
 #include "dcn_calc_math.h"
 #include "dml_logger.h"
 
@@ -75,6 +74,18 @@ static inline double dml_floor(double a, double granularity)
 	return (double) dcn_bw_floor2(a, granularity);
 }
 
+static inline double dml_round(double a)
+{
+	double round_pt = 0.5;
+	double ceil = dml_ceil(a, 1);
+	double floor = dml_floor(a, 1);
+
+	if (a - floor >= round_pt)
+		return ceil;
+	else
+		return floor;
+}
+
 static inline int dml_log2(double x)
 {
 	return dml_round((double)dcn_bw_log(x, 2));
@@ -112,7 +123,7 @@ static inline double dml_log(double x, double base)
 
 static inline unsigned int dml_round_to_multiple(unsigned int num,
 						 unsigned int multiple,
-						 bool up)
+						 unsigned char up)
 {
 	unsigned int remainder;
 

drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h

@@ -92,6 +92,11 @@ struct hw_sequencer_funcs {
 	void (*get_position)(struct pipe_ctx **pipe_ctx, int num_pipes,
 			struct crtc_position *position);
 	int (*get_vupdate_offset_from_vsync)(struct pipe_ctx *pipe_ctx);
+	void (*calc_vupdate_position)(
+			struct dc *dc,
+			struct pipe_ctx *pipe_ctx,
+			uint32_t *start_line,
+			uint32_t *end_line);
 	void (*enable_per_frame_crtc_position_reset)(struct dc *dc,
 			int group_size, struct pipe_ctx *grouped_pipes[]);
 	void (*enable_timing_synchronization)(struct dc *dc,