Commit 59ca3d11 authored by Dmitry Baryshkov's avatar Dmitry Baryshkov
Browse files

drm/msm/dpu: fix CMD panels on DPU 1.x - 3.x 



DPU units before 4.x don't have a separate CTL_START IRQ to mark the
begin of the data transfer. In such a case, wait for the frame transfer
to complete rather than trying to wait for the CTL_START interrupt (and
obviously hitting the timeout).

Fixes: 050770cb ("drm/msm/dpu: Fix timeout issues on command mode panels")
Reported-by: default avatarAlexey Minnekhanov <alexeymin@postmarketos.org>
Closes: https://lore.kernel.org/r/8e1d33ff-d902-4ae9-9162-e00d17a5e6d1@postmarketos.org
Patchwork: https://patchwork.freedesktop.org/patch/696490/
Link: https://lore.kernel.org/r/20251228-mdp5-drop-dpu3-v4-2-7497c3d39179@oss.qualcomm.com


Tested-by: default avatarAlexey Minnekhanov <alexeymin@minlexx.ru>
Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
parent f4a8e3a3

drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c

+4 −3
Original line number Diff line number Diff line
@@ -681,10 +681,11 @@ static int dpu_encoder_phys_cmd_wait_for_commit_done( 
	if (!dpu_encoder_phys_cmd_is_master(phys_enc))

		return 0;



	if (phys_enc->hw_ctl->ops.is_started(phys_enc->hw_ctl))

		return dpu_encoder_phys_cmd_wait_for_tx_complete(phys_enc);



	if (phys_enc->irq[INTR_IDX_CTL_START] &&

	    !phys_enc->hw_ctl->ops.is_started(phys_enc->hw_ctl))

		return _dpu_encoder_phys_cmd_wait_for_ctl_start(phys_enc);



	return dpu_encoder_phys_cmd_wait_for_tx_complete(phys_enc);

}



static void dpu_encoder_phys_cmd_handle_post_kickoff(