[PATCH AUTOSEL 6.4 40/58] drm/amd/display: Trigger DIO FIFO resync on commit streams
From: Sasha Levin
Date: Sun Jul 23 2023 - 21:21:21 EST
From: Saaem Rizvi <syedsaaem.rizvi@xxxxxxx>
[ Upstream commit 3e8d74cb128fb1a4d56270ffbecea6056c55739a ]
[WHY]
Currently, there is an intermittent issue where a screen can either go
blank or be corrupted.
[HOW]
To resolve the issue we trigger the ramping logic for DIO FIFO so that
it goes back up to the correct speed.
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
Acked-by: Tom Chung <chiahsuan.chung@xxxxxxx>
Signed-off-by: Saaem Rizvi <syedsaaem.rizvi@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
.../display/dc/dce110/dce110_hw_sequencer.c | 3 +++
.../gpu/drm/amd/display/dc/dcn20/dcn20_dccg.h | 4 ++-
.../drm/amd/display/dc/dcn314/dcn314_dccg.c | 11 ++++++++
.../drm/amd/display/dc/dcn314/dcn314_dccg.h | 5 +++-
.../drm/amd/display/dc/dcn314/dcn314_hwseq.c | 27 +++++++++++++++++++
.../drm/amd/display/dc/dcn314/dcn314_hwseq.h | 2 ++
.../drm/amd/display/dc/dcn314/dcn314_init.c | 1 +
drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h | 3 +++
.../amd/display/dc/inc/hw_sequencer_private.h | 2 ++
9 files changed, 56 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 8d2460d06bced..1a0be40d125c6 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
@@ -2291,6 +2291,9 @@ enum dc_status dce110_apply_ctx_to_hw(
if (DC_OK != status)
return status;
+
+ if (hws->funcs.resync_fifo_dccg_dio)
+ hws->funcs.resync_fifo_dccg_dio(hws, dc, context);
}
if (dc->fbc_compressor)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.h b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.h
index 7bdc146f7cb59..c8602bcfa393a 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.h
@@ -208,7 +208,9 @@
#define DCCG314_REG_FIELD_LIST(type) \
type DSCCLK3_DTO_PHASE;\
type DSCCLK3_DTO_MODULO;\
- type DSCCLK3_DTO_ENABLE;
+ type DSCCLK3_DTO_ENABLE;\
+ type DENTIST_DISPCLK_RDIVIDER;\
+ type DENTIST_DISPCLK_WDIVIDER;
#define DCCG32_REG_FIELD_LIST(type) \
type DPSTREAMCLK0_EN;\
diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dccg.c b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dccg.c
index de7bfba2c1798..e0e7d32bb1a0e 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dccg.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dccg.c
@@ -45,6 +45,16 @@
#define DC_LOGGER \
dccg->ctx->logger
+static void dccg314_trigger_dio_fifo_resync(
+ struct dccg *dccg)
+{
+ struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(dccg);
+ uint32_t dispclk_rdivider_value = 0;
+
+ REG_GET(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_RDIVIDER, &dispclk_rdivider_value);
+ REG_UPDATE(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_WDIVIDER, dispclk_rdivider_value);
+}
+
static void dccg314_get_pixel_rate_div(
struct dccg *dccg,
uint32_t otg_inst,
@@ -357,6 +367,7 @@ static const struct dccg_funcs dccg314_funcs = {
.disable_dsc = dccg31_disable_dscclk,
.enable_dsc = dccg31_enable_dscclk,
.set_pixel_rate_div = dccg314_set_pixel_rate_div,
+ .trigger_dio_fifo_resync = dccg314_trigger_dio_fifo_resync,
.set_valid_pixel_rate = dccg314_set_valid_pixel_rate,
};
diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dccg.h b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dccg.h
index 90687a9e8fddd..8e07d3151f915 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dccg.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_dccg.h
@@ -192,7 +192,10 @@
DCCG_SF(DCCG_GATE_DISABLE_CNTL2, PHYBSYMCLK_GATE_DISABLE, mask_sh),\
DCCG_SF(DCCG_GATE_DISABLE_CNTL2, PHYCSYMCLK_GATE_DISABLE, mask_sh),\
DCCG_SF(DCCG_GATE_DISABLE_CNTL2, PHYDSYMCLK_GATE_DISABLE, mask_sh),\
- DCCG_SF(DCCG_GATE_DISABLE_CNTL2, PHYESYMCLK_GATE_DISABLE, mask_sh)
+ DCCG_SF(DCCG_GATE_DISABLE_CNTL2, PHYESYMCLK_GATE_DISABLE, mask_sh),\
+ DCCG_SF(HDMISTREAMCLK0_DTO_PARAM, HDMISTREAMCLK0_DTO_MODULO, mask_sh),\
+ DCCG_SF(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_RDIVIDER, mask_sh),\
+ DCCG_SF(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_WDIVIDER, mask_sh)
struct dccg *dccg314_create(
struct dc_context *ctx,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c
index cc3fe9cac5b53..df5c5117bc9b2 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.c
@@ -390,6 +390,33 @@ void dcn314_set_pixels_per_cycle(struct pipe_ctx *pipe_ctx)
pix_per_cycle);
}
+void dcn314_resync_fifo_dccg_dio(struct dce_hwseq *hws, struct dc *dc, struct dc_state *context)
+{
+ uint8_t i;
+ struct pipe_ctx *pipe = NULL;
+ bool otg_disabled[MAX_PIPES] = {false};
+
+ for (i = 0; i < dc->res_pool->pipe_count; i++) {
+ pipe = &dc->current_state->res_ctx.pipe_ctx[i];
+
+ if (pipe->top_pipe || pipe->prev_odm_pipe)
+ continue;
+
+ if (pipe->stream && (pipe->stream->dpms_off || dc_is_virtual_signal(pipe->stream->signal))) {
+ pipe->stream_res.tg->funcs->disable_crtc(pipe->stream_res.tg);
+ reset_sync_context_for_pipe(dc, context, i);
+ otg_disabled[i] = true;
+ }
+ }
+
+ hws->ctx->dc->res_pool->dccg->funcs->trigger_dio_fifo_resync(hws->ctx->dc->res_pool->dccg);
+
+ for (i = 0; i < dc->res_pool->pipe_count; i++) {
+ if (otg_disabled[i])
+ pipe->stream_res.tg->funcs->enable_crtc(pipe->stream_res.tg);
+ }
+}
+
void dcn314_dpp_root_clock_control(struct dce_hwseq *hws, unsigned int dpp_inst, bool clock_on)
{
if (!hws->ctx->dc->debug.root_clock_optimization.bits.dpp)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.h b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.h
index 6d0b62503caa6..559d71002e8a4 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_hwseq.h
@@ -41,6 +41,8 @@ unsigned int dcn314_calculate_dccg_k1_k2_values(struct pipe_ctx *pipe_ctx, unsig
void dcn314_set_pixels_per_cycle(struct pipe_ctx *pipe_ctx);
+void dcn314_resync_fifo_dccg_dio(struct dce_hwseq *hws, struct dc *dc, struct dc_state *context);
+
void dcn314_hubp_pg_control(struct dce_hwseq *hws, unsigned int hubp_inst, bool power_on);
void dcn314_dpp_root_clock_control(struct dce_hwseq *hws, unsigned int dpp_inst, bool clock_on);
diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_init.c b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_init.c
index a588f46b166f4..6b8586852c0eb 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_init.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_init.c
@@ -151,6 +151,7 @@ static const struct hwseq_private_funcs dcn314_private_funcs = {
.setup_hpo_hw_control = dcn31_setup_hpo_hw_control,
.calculate_dccg_k1_k2_values = dcn314_calculate_dccg_k1_k2_values,
.set_pixels_per_cycle = dcn314_set_pixels_per_cycle,
+ .resync_fifo_dccg_dio = dcn314_resync_fifo_dccg_dio,
};
void dcn314_hw_sequencer_construct(struct dc *dc)
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h b/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h
index ad6acd1b34e1d..0b700b3d7d972 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h
@@ -159,6 +159,9 @@ struct dccg_funcs {
int otg_inst,
int pixclk_khz);
+ void (*trigger_dio_fifo_resync)(
+ struct dccg *dccg);
+
void (*dpp_root_clock_control)(
struct dccg *dccg,
unsigned int dpp_inst,
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer_private.h b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer_private.h
index 4513544559be2..4ca4192c1e127 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer_private.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer_private.h
@@ -160,6 +160,8 @@ struct hwseq_private_funcs {
unsigned int *k1_div,
unsigned int *k2_div);
void (*set_pixels_per_cycle)(struct pipe_ctx *pipe_ctx);
+ void (*resync_fifo_dccg_dio)(struct dce_hwseq *hws, struct dc *dc,
+ struct dc_state *context);
bool (*is_dp_dig_pixel_rate_div_policy)(struct pipe_ctx *pipe_ctx);
#endif
};
--
2.39.2