On 02/02/2022 12:48, Marijn Suijten wrote:
On 2022-01-20 02:12:51, Dmitry Baryshkov wrote:
On 22/12/2021 13:55, Marijn Suijten wrote:
As per the specification of DPU_CTL_ACTIVE_CFG the configuration of active blocks should be proactively specified, and the pingpong block is no different.
The downstream display driver [1] confirms this by also calling bind_pingpong_blk on CTL_ACTIVE_CFG. Note that this else-if is always entered, as setup_intf_cfg - unlike this mainline dpu driver that combines both behind the same function pointer - is left NULL in favour of using setup_intf_cfg_v1 when CTL_ACTIVE_CFG is set.
This solves continuous timeouts on at least the Qualcomm sm6125 SoC:
[drm:dpu_encoder_frame_done_timeout:2091] [dpu error]enc31 frame done timeout [drm:_dpu_encoder_phys_cmd_handle_ppdone_timeout.isra.0] *ERROR* id:31 pp:0 kickoff timeout 0 cnt 1 koff_cnt 1 [drm:dpu_encoder_phys_cmd_prepare_for_kickoff] *ERROR* failed wait_for_idle: id:31 ret:-110 pp:0In the same way this pingpong block should also be unbound followed by an interface flush when the encoder is disabled, according to the downstream display driver [2].
Signed-off-by: Marijn Suijten marijn.suijten@somainline.org Reviewed-by: AngeloGioacchino Del Regno angelogioacchino.delregno@somainline.org
Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org
.../drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c index 8e433af7aea4..e0e08a874f07 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c @@ -71,6 +71,13 @@ static void _dpu_encoder_phys_cmd_update_intf_cfg( intf_cfg.stream_sel = cmd_enc->stream_sel; intf_cfg.mode_3d = dpu_encoder_helper_get_3d_blend_mode(phys_enc); ctl->ops.setup_intf_cfg(ctl, &intf_cfg);
- /* setup which pp blk will connect to this intf */
- if (test_bit(DPU_CTL_ACTIVE_CFG, &ctl->caps->features) && phys_enc->hw_intf->ops.bind_pingpong_blk)
Nit: here we bind all interfaces, but later we unbind only master. Is this correct?
Not sure: it seems downstream only calls _sde/dpu_encoder_phys_cmd_update_intf_cfg when it is _not_ a ppsplit slave, which appears to be very similar to being the master (both check for ENC_ROLE_SLAVE but ppsplit also checks RM topology support for ppsplit). Should we do this too before calling _dpu_encoder_phys_cmd_update_intf_cfg?
The PP split is a special topology using a single LM, but two PP (and two INTFs). The dpu driver doesn't provide support for it, so ppsplit is always false.
- Marijn
phys_enc->hw_intf->ops.bind_pingpong_blk(phys_enc->hw_intf,true,phys_enc->hw_pp->idx);}
static void dpu_encoder_phys_cmd_pp_tx_done_irq(void *arg, int irq_idx)
@@ -507,6 +514,7 @@ static void dpu_encoder_phys_cmd_disable(struct dpu_encoder_phys *phys_enc) { struct dpu_encoder_phys_cmd *cmd_enc = to_dpu_encoder_phys_cmd(phys_enc);
struct dpu_hw_ctl *ctl;
if (!phys_enc->hw_pp) { DPU_ERROR("invalid encoder\n");
@@ -523,6 +531,19 @@ static void dpu_encoder_phys_cmd_disable(struct dpu_encoder_phys *phys_enc)
if (phys_enc->hw_pp->ops.enable_tearcheck) phys_enc->hw_pp->ops.enable_tearcheck(phys_enc->hw_pp, false);
- if (dpu_encoder_phys_cmd_is_master(phys_enc)) {
Please remove this condition. Just check for existence of bind_pingpong_blk.
if (phys_enc->hw_intf->ops.bind_pingpong_blk) {phys_enc->hw_intf->ops.bind_pingpong_blk(phys_enc->hw_intf,false,phys_enc->hw_pp->idx);ctl = phys_enc->hw_ctl;ctl->ops.update_pending_flush_intf(ctl, phys_enc->intf_idx);}- }
- phys_enc->enable_state = DPU_ENC_DISABLED; }
-- With best wishes Dmitry