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From cdc905abe2dde45f96c54025bf5160cd8173e575 Mon Sep 17 00:00:00 2001
From: Gary Kattan <gary.kattan@amd.com>
Date: Fri, 25 Jan 2019 15:04:14 -0800
Subject: [PATCH 1262/2940] drm/amd/display: Ungate stream before programming
registers
[Why]
Certain tests fail after a fresh reboot. This is caused by writing to
registers prior to ungating the stream we're trying to program.
[How]
Make sure the stream is ungated before writing to its registers.
This also enables power-gating plane resources before init_hw
initializes them.
Additionally, this does some refactoring to move gating/ungating
from enable/disable_plane functions to where stream resources are
enabled/disabled.
Signed-off-by: Gary Kattan <gary.kattan@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
---
.../gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 6 ++++++
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 8 ++++++--
drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h | 4 ++++
3 files changed, 16 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index a28fade62752..b5fe3eb3c93c 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -1300,6 +1300,10 @@ static enum dc_status apply_single_controller_ctx_to_hw(
struct drr_params params = {0};
unsigned int event_triggers = 0;
+ if (dc->hwss.disable_stream_gating) {
+ dc->hwss.disable_stream_gating(dc, pipe_ctx);
+ }
+
if (pipe_ctx->stream_res.audio != NULL) {
struct audio_output audio_output;
@@ -2684,6 +2688,8 @@ static const struct hw_sequencer_funcs dce110_funcs = {
.set_static_screen_control = set_static_screen_control,
.reset_hw_ctx_wrap = dce110_reset_hw_ctx_wrap,
.enable_stream_timing = dce110_enable_stream_timing,
+ .disable_stream_gating = NULL,
+ .enable_stream_gating = NULL,
.setup_stereo = NULL,
.set_avmute = dce110_set_avmute,
.wait_for_mpcc_disconnect = dce110_wait_for_mpcc_disconnect,
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 05e5aa13602f..23b85a3f1b79 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
@@ -1165,11 +1165,13 @@ static void reset_hw_ctx_wrap(
struct clock_source *old_clk = pipe_ctx_old->clock_source;
reset_back_end_for_pipe(dc, pipe_ctx_old, dc->current_state);
+ if (dc->hwss.enable_stream_gating) {
+ dc->hwss.enable_stream_gating(dc, pipe_ctx);
+ }
if (old_clk)
old_clk->funcs->cs_power_down(old_clk);
}
}
-
}
static bool patch_address_for_sbs_tb_stereo(
@@ -2785,7 +2787,9 @@ static const struct hw_sequencer_funcs dcn10_funcs = {
.edp_wait_for_hpd_ready = hwss_edp_wait_for_hpd_ready,
.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
+ .set_cursor_sdr_white_level = dcn10_set_cursor_sdr_white_level,
+ .disable_stream_gating = NULL,
+ .enable_stream_gating = NULL
};
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
index 341b4810288c..fc03320c81a1 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
@@ -68,6 +68,10 @@ struct stream_resource;
struct hw_sequencer_funcs {
+ void (*disable_stream_gating)(struct dc *dc, struct pipe_ctx *pipe_ctx);
+
+ void (*enable_stream_gating)(struct dc *dc, struct pipe_ctx *pipe_ctx);
+
void (*init_hw)(struct dc *dc);
void (*init_pipes)(struct dc *dc, struct dc_state *context);
--
2.17.1
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