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drm/amd/display: Disable DWB frame capture to emulate oneshot

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[WHY]
drm_writeback requires to capture exact one frame in each writeback
call.

[HOW]
frame_capture is disabled after each writeback is completed.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Hung
2023-12-01 06:25:39 -07:00
committed by Alex Deucher
parent 50ad10cba6
commit 87ce0e6269
3 changed files with 44 additions and 1 deletions
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14
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@@ -595,8 +595,20 @@ static void dm_crtc_high_irq(void *interrupt_params)
list_entry);
spin_unlock_irqrestore(&acrtc->wb_conn->job_lock, flags);
if (job)
if (job) {
unsigned int v_total, refresh_hz;
struct dc_stream_state *stream = acrtc->dm_irq_params.stream;
v_total = stream->adjust.v_total_max ?
stream->adjust.v_total_max : stream->timing.v_total;
refresh_hz = div_u64((uint64_t) stream->timing.pix_clk_100hz *
100LL, (v_total * stream->timing.h_total));
mdelay(1000 / refresh_hz);
drm_writeback_signal_completion(acrtc->wb_conn, 0);
dc_stream_fc_disable_writeback(adev->dm.dc,
acrtc->dm_irq_params.stream, 0);
}
} else
DRM_ERROR("%s: no amdgpu_crtc wb_conn\n", __func__);
acrtc->wb_pending = false;