diff options
| author | Aric Cyr <aric.cyr@amd.com> | 2020-12-10 12:11:32 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-12-23 15:02:18 -0500 |
| commit | a71e5529d2674584fda0fa09a7de4efc8e17160d (patch) | |
| tree | 30a17ffc0781b5876199d9a219cf26e800337d22 | |
| parent | cbac53f7fc90754b898e79ab2d5c11052ce1b640 (diff) | |
| download | linux-a71e5529d2674584fda0fa09a7de4efc8e17160d.tar.gz | |
drm/amd/display: Multi-display underflow observed
[Why]
FP2 programming not happening when topology changes occur with multiple
displays.
[How]
Ensure FP2 is programmed whenever global sync changes occur but wait for
VACTIVE first to avoid underflow.
Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Acked-by: Bindu Ramamurthy <bindu.r@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc.c | 20 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 12 |
2 files changed, 9 insertions, 23 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 7339d9855ec8cc..58eb0d69873a62 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -2625,26 +2625,6 @@ static void commit_planes_for_stream(struct dc *dc, } } - if (update_type != UPDATE_TYPE_FAST) { - // If changing VTG FP2: wait until back in vactive to program FP2 - // Need to ensure that pipe unlock happens soon after to minimize race condition - for (i = 0; i < dc->res_pool->pipe_count; i++) { - struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i]; - - if (pipe_ctx->top_pipe || pipe_ctx->stream != stream) - continue; - - if (!pipe_ctx->update_flags.bits.global_sync) - continue; - - pipe_ctx->stream_res.tg->funcs->wait_for_state(pipe_ctx->stream_res.tg, CRTC_STATE_VBLANK); - pipe_ctx->stream_res.tg->funcs->wait_for_state(pipe_ctx->stream_res.tg, CRTC_STATE_VACTIVE); - - pipe_ctx->stream_res.tg->funcs->set_vtg_params( - pipe_ctx->stream_res.tg, &pipe_ctx->stream->timing, true); - } - } - if ((update_type != UPDATE_TYPE_FAST) && dc->hwss.interdependent_update_lock) dc->hwss.interdependent_update_lock(dc, context, false); else diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c index 31a477194d3b50..cb822df21b7c5a 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c @@ -1586,7 +1586,10 @@ static void dcn20_program_pipe( && !pipe_ctx->top_pipe && !pipe_ctx->prev_odm_pipe) hws->funcs.blank_pixel_data(dc, pipe_ctx, !pipe_ctx->plane_state->visible); - if (pipe_ctx->update_flags.bits.global_sync) { + /* Only update TG on top pipe */ + if (pipe_ctx->update_flags.bits.global_sync && !pipe_ctx->top_pipe + && !pipe_ctx->prev_odm_pipe) { + pipe_ctx->stream_res.tg->funcs->program_global_sync( pipe_ctx->stream_res.tg, pipe_ctx->pipe_dlg_param.vready_offset, @@ -1594,8 +1597,11 @@ static void dcn20_program_pipe( pipe_ctx->pipe_dlg_param.vupdate_offset, pipe_ctx->pipe_dlg_param.vupdate_width); + pipe_ctx->stream_res.tg->funcs->wait_for_state(pipe_ctx->stream_res.tg, CRTC_STATE_VBLANK); + pipe_ctx->stream_res.tg->funcs->wait_for_state(pipe_ctx->stream_res.tg, CRTC_STATE_VACTIVE); + pipe_ctx->stream_res.tg->funcs->set_vtg_params( - pipe_ctx->stream_res.tg, &pipe_ctx->stream->timing, false); + pipe_ctx->stream_res.tg, &pipe_ctx->stream->timing, true); if (hws->funcs.setup_vupdate_interrupt) hws->funcs.setup_vupdate_interrupt(dc, pipe_ctx); @@ -2570,4 +2576,4 @@ void dcn20_set_disp_pattern_generator(const struct dc *dc, { pipe_ctx->stream_res.opp->funcs->opp_set_disp_pattern_generator(pipe_ctx->stream_res.opp, test_pattern, color_space, color_depth, solid_color, width, height, offset); -}
\ No newline at end of file +} |