diff options
| author | Martin Leung <martin.leung@amd.com> | 2020-12-02 15:10:12 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-12-15 11:34:17 -0500 |
| commit | 5200c4017ef25f85634012a967c78ff64495dd85 (patch) | |
| tree | 681bb8c1cc684f7cce842884153da60ec333d309 /drivers/gpu/drm/amd/display/dc/dcn10 | |
| parent | 09b07f7a188f3b52e7f7c778ab3b4e4aa4e9677a (diff) | |
| download | linux-5200c4017ef25f85634012a967c78ff64495dd85.tar.bz2 | |
drm/amd/display: delay fp2 programming until vactive before lock
[Why]
race condition of programming FP2 wrt pipe locking
and vactive state can cause underflow/black screen
[How]
Enforce the FP2 is only programmed during vactive,
and unlock pipe soon afterwards.
Signed-off-by: Martin Leung <martin.leung@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn10')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c | 13 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.h | 2 |
3 files changed, 10 insertions, 7 deletions
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 9f7d6b087553..cfc130e2d6fd 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 @@ -2736,7 +2736,7 @@ static void dcn10_program_all_pipe_in_tree( pipe_ctx->pipe_dlg_param.vupdate_width); pipe_ctx->stream_res.tg->funcs->set_vtg_params( - pipe_ctx->stream_res.tg, &pipe_ctx->stream->timing); + pipe_ctx->stream_res.tg, &pipe_ctx->stream->timing, true); if (hws->funcs.setup_vupdate_interrupt) hws->funcs.setup_vupdate_interrupt(dc, pipe_ctx); diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c index 48ccdcc17ede..f033397a84e9 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c @@ -272,7 +272,7 @@ void optc1_program_timing( vupdate_offset, vupdate_width); - optc->funcs->set_vtg_params(optc, dc_crtc_timing); + optc->funcs->set_vtg_params(optc, dc_crtc_timing, true); /* TODO * patched_crtc_timing.flags.HORZ_COUNT_BY_TWO == 1 @@ -312,7 +312,7 @@ void optc1_program_timing( } void optc1_set_vtg_params(struct timing_generator *optc, - const struct dc_crtc_timing *dc_crtc_timing) + const struct dc_crtc_timing *dc_crtc_timing, bool program_fp2) { struct dc_crtc_timing patched_crtc_timing; uint32_t asic_blank_end; @@ -348,9 +348,12 @@ void optc1_set_vtg_params(struct timing_generator *optc, } } - REG_UPDATE_2(CONTROL, - VTG0_FP2, v_fp2, - VTG0_VCOUNT_INIT, v_init); + if (program_fp2) + REG_UPDATE_2(CONTROL, + VTG0_FP2, v_fp2, + VTG0_VCOUNT_INIT, v_init); + else + REG_UPDATE(CONTROL, VTG0_VCOUNT_INIT, v_init); } void optc1_set_blank_data_double_buffer(struct timing_generator *optc, bool enable) diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.h b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.h index 344eb487219e..b12bd9aae52f 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.h +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.h @@ -700,6 +700,6 @@ bool optc1_get_crc(struct timing_generator *optc, bool optc1_is_two_pixels_per_containter(const struct dc_crtc_timing *timing); void optc1_set_vtg_params(struct timing_generator *optc, - const struct dc_crtc_timing *dc_crtc_timing); + const struct dc_crtc_timing *dc_crtc_timing, bool program_fp2); #endif /* __DC_TIMING_GENERATOR_DCN10_H__ */ |