From: Tony Cheng <tony.ch...@amd.com>
- root cause was we disable opp clk in MPC disconnect
- hubp_blank is not double buffered, so we can't blank until MPC disconnect or
we have risk of underflow
Change-Id: Ic767e4cfbdec5d68c118c3ed818c10543c771967
Signed-off-by: Tony Cheng <tony.ch...@amd.com>
Reviewed-by: Eric Yang <eric.ya...@amd.com>
Acked-by: Harry Wentland <harry.wentl...@amd.com>
---
drivers/gpu/drm/amd/display/dc/dce/dce_hwseq.h | 2 --
.../drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 41 +++++++++++++---------
.../gpu/drm/amd/display/dc/dcn10/dcn10_mem_input.c | 5 +++
.../gpu/drm/amd/display/dc/dcn10/dcn10_mem_input.h | 2 ++
4 files changed, 32 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_hwseq.h
b/drivers/gpu/drm/amd/display/dc/dce/dce_hwseq.h
index 7e1d46f..94d12b5 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_hwseq.h
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_hwseq.h
@@ -288,7 +288,6 @@ struct dce_hwseq_registers {
HWS_SF1(OTG0_, PHYPLL_PIXEL_RATE_CNTL, PHYPLL_PIXEL_RATE_SOURCE,
mask_sh), \
HWS_SF(OTG0_, OTG_GLOBAL_SYNC_STATUS, VUPDATE_NO_LOCK_EVENT_CLEAR,
mask_sh), \
HWS_SF(OTG0_, OTG_GLOBAL_SYNC_STATUS, VUPDATE_NO_LOCK_EVENT_OCCURRED,
mask_sh), \
- HWS_SF(HUBP0_, DCHUBP_CNTL, HUBP_NO_OUTSTANDING_REQ, mask_sh), \
HWS_SF(HUBP0_, DCHUBP_CNTL, HUBP_VTG_SEL, mask_sh), \
HWS_SF(HUBP0_, HUBP_CLK_CNTL, HUBP_CLOCK_ENABLE, mask_sh), \
HWS_SF(DPP_TOP0_, DPP_CONTROL, DPP_CLOCK_ENABLE, mask_sh), \
@@ -351,7 +350,6 @@ struct dce_hwseq_registers {
#define HWSEQ_DCN_REG_FIELD_LIST(type) \
type VUPDATE_NO_LOCK_EVENT_CLEAR; \
type VUPDATE_NO_LOCK_EVENT_OCCURRED; \
- type HUBP_NO_OUTSTANDING_REQ; \
type HUBP_VTG_SEL; \
type HUBP_CLOCK_ENABLE; \
type DPP_CLOCK_ENABLE; \
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 8284837..adf3d29 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
@@ -436,29 +436,17 @@ static void reset_back_end_for_pipe(
pipe_ctx->pipe_idx, pipe_ctx->tg->inst);
}
-static void reset_front_end(
+static void plane_atomic_stop(
struct core_dc *dc,
int fe_idx)
{
- struct dce_hwseq *hws = dc->hwseq;
struct mpcc_cfg mpcc_cfg;
struct mem_input *mi = dc->res_pool->mis[fe_idx];
struct transform *xfm = dc->res_pool->transforms[fe_idx];
struct mpcc *mpcc = dc->res_pool->mpcc[fe_idx];
struct timing_generator *tg =
dc->res_pool->timing_generators[mpcc->opp_id];
- unsigned int opp_id = mpcc->opp_id;
-
- /*Already reset*/
- if (opp_id == 0xf)
- return;
-
- tg->funcs->lock(tg);
mi->funcs->dcc_control(mi, false, false);
- mi->funcs->set_blank(mi, true);
- REG_WAIT(DCHUBP_CNTL[fe_idx],
- HUBP_NO_OUTSTANDING_REQ, 1,
- 1, 200);
mpcc_cfg.opp_id = 0xf;
mpcc_cfg.top_dpp_id = 0xf;
@@ -466,23 +454,44 @@ static void reset_front_end(
mpcc_cfg.top_of_tree = tg->inst == mpcc->inst;
mpcc->funcs->set(mpcc, &mpcc_cfg);
+ xfm->funcs->transform_reset(xfm);
+}
+
+static void reset_front_end(
+ struct core_dc *dc,
+ int fe_idx)
+{
+ struct dce_hwseq *hws = dc->hwseq;
+ struct mem_input *mi = dc->res_pool->mis[fe_idx];
+ struct mpcc *mpcc = dc->res_pool->mpcc[fe_idx];
+ struct timing_generator *tg =
dc->res_pool->timing_generators[mpcc->opp_id];
+ unsigned int opp_id = mpcc->opp_id;
+
+ /*Already reset*/
+ if (opp_id == 0xf)
+ return;
+
+ tg->funcs->lock(tg);
+
+ plane_atomic_stop(dc, fe_idx);
+
REG_UPDATE(OTG_GLOBAL_SYNC_STATUS[tg->inst],
VUPDATE_NO_LOCK_EVENT_CLEAR, 1);
tg->funcs->unlock(tg);
REG_WAIT(OTG_GLOBAL_SYNC_STATUS[tg->inst],
VUPDATE_NO_LOCK_EVENT_OCCURRED, 1, 20000, 200000);
mpcc->funcs->wait_for_idle(mpcc);
+ mi->funcs->set_blank(mi, true);
+
REG_UPDATE(HUBP_CLK_CNTL[fe_idx],
HUBP_CLOCK_ENABLE, 0);
REG_UPDATE(DPP_CONTROL[fe_idx],
DPP_CLOCK_ENABLE, 0);
- if (mpcc_cfg.top_of_tree)
+ if (tg->inst == mpcc->inst)
REG_UPDATE(OPP_PIPE_CONTROL[opp_id],
OPP_PIPE_CLOCK_EN, 0);
- xfm->funcs->transform_reset(xfm);
-
dm_logger_write(dc->ctx->logger, LOG_DC,
"Reset front end %d\n",
fe_idx);
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mem_input.c
b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mem_input.c
index efa02d1..8054794 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mem_input.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mem_input.c
@@ -46,6 +46,11 @@ static void min10_set_blank(struct mem_input *mem_input,
bool blank)
REG_UPDATE_2(DCHUBP_CNTL,
HUBP_BLANK_EN, blank_en,
HUBP_TTU_DISABLE, blank_en);
+
+ if (blank)
+ REG_WAIT(DCHUBP_CNTL,
+ HUBP_NO_OUTSTANDING_REQ, 1,
+ 1, 200);
}
static void min10_vready_workaround(struct mem_input *mem_input,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mem_input.h
b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mem_input.h
index 7efa857..a0a1cef 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mem_input.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mem_input.h
@@ -304,6 +304,7 @@ struct dcn_mi_registers {
#define MI_MASK_SH_LIST_DCN(mask_sh)\
MI_SF(HUBP0_DCHUBP_CNTL, HUBP_BLANK_EN, mask_sh),\
MI_SF(HUBP0_DCHUBP_CNTL, HUBP_TTU_DISABLE, mask_sh),\
+ MI_SF(HUBP0_DCHUBP_CNTL, HUBP_NO_OUTSTANDING_REQ, mask_sh),\
MI_SF(HUBP0_DCSURF_ADDR_CONFIG, NUM_PIPES, mask_sh),\
MI_SF(HUBP0_DCSURF_ADDR_CONFIG, NUM_BANKS, mask_sh),\
MI_SF(HUBP0_DCSURF_ADDR_CONFIG, PIPE_INTERLEAVE, mask_sh),\
@@ -463,6 +464,7 @@ struct dcn_mi_registers {
#define DCN_MI_REG_FIELD_LIST(type) \
type HUBP_BLANK_EN;\
type HUBP_TTU_DISABLE;\
+ type HUBP_NO_OUTSTANDING_REQ;\
type NUM_PIPES;\
type NUM_BANKS;\
type PIPE_INTERLEAVE;\
--
2.7.4
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