diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/link/link_dpms.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/link_dpms.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dpms.c b/drivers/gpu/drm/amd/display/dc/link/link_dpms.c index b16b2e14312e..5fe8b4871c77 100644 --- a/drivers/gpu/drm/amd/display/dc/link/link_dpms.c +++ b/drivers/gpu/drm/amd/display/dc/link/link_dpms.c @@ -776,10 +776,26 @@ static bool dp_set_dsc_on_rx(struct pipe_ctx *pipe_ctx, bool enable) */ void link_set_dsc_on_stream(struct pipe_ctx *pipe_ctx, bool enable) { + /* TODO: Move this to HWSS as this is hardware programming sequence not a + * link layer sequence + */ struct display_stream_compressor *dsc = pipe_ctx->stream_res.dsc; + struct dc *dc = pipe_ctx->stream->ctx->dc; struct dc_stream_state *stream = pipe_ctx->stream; struct pipe_ctx *odm_pipe; int opp_cnt = 1; + struct dccg *dccg = dc->res_pool->dccg; + /* It has been found that when DSCCLK is lower than 16Mhz, we will get DCN + * register access hung. When DSCCLk is based on refclk, DSCCLk is always a + * fixed value higher than 16Mhz so the issue doesn't occur. When DSCCLK is + * generated by DTO, DSCCLK would be based on 1/3 dispclk. For small timings + * with DSC such as 480p60Hz, the dispclk could be low enough to trigger + * this problem. We are implementing a workaround here to keep using dscclk + * based on fixed value refclk when timing is smaller than 3x16Mhz (i.e + * 48Mhz) pixel clock to avoid hitting this problem. + */ + bool should_use_dto_dscclk = (dccg->funcs->set_dto_dscclk != NULL) && + stream->timing.pix_clk_100hz > 480000; DC_LOGGER_INIT(dsc->ctx->logger); for (odm_pipe = pipe_ctx->next_odm_pipe; odm_pipe; odm_pipe = odm_pipe->next_odm_pipe) @@ -802,11 +818,15 @@ void link_set_dsc_on_stream(struct pipe_ctx *pipe_ctx, bool enable) dsc->funcs->dsc_set_config(dsc, &dsc_cfg, &dsc_optc_cfg); dsc->funcs->dsc_enable(dsc, pipe_ctx->stream_res.opp->inst); + if (should_use_dto_dscclk) + dccg->funcs->set_dto_dscclk(dccg, dsc->inst); for (odm_pipe = pipe_ctx->next_odm_pipe; odm_pipe; odm_pipe = odm_pipe->next_odm_pipe) { struct display_stream_compressor *odm_dsc = odm_pipe->stream_res.dsc; odm_dsc->funcs->dsc_set_config(odm_dsc, &dsc_cfg, &dsc_optc_cfg); odm_dsc->funcs->dsc_enable(odm_dsc, odm_pipe->stream_res.opp->inst); + if (should_use_dto_dscclk) + dccg->funcs->set_dto_dscclk(dccg, odm_dsc->inst); } dsc_cfg.dc_dsc_cfg.num_slices_h *= opp_cnt; dsc_cfg.pic_width *= opp_cnt; @@ -856,9 +876,14 @@ void link_set_dsc_on_stream(struct pipe_ctx *pipe_ctx, bool enable) } /* disable DSC block */ + if (dccg->funcs->set_ref_dscclk) + dccg->funcs->set_ref_dscclk(dccg, pipe_ctx->stream_res.dsc->inst); pipe_ctx->stream_res.dsc->funcs->dsc_disable(pipe_ctx->stream_res.dsc); - for (odm_pipe = pipe_ctx->next_odm_pipe; odm_pipe; odm_pipe = odm_pipe->next_odm_pipe) + for (odm_pipe = pipe_ctx->next_odm_pipe; odm_pipe; odm_pipe = odm_pipe->next_odm_pipe) { + if (dccg->funcs->set_ref_dscclk) + dccg->funcs->set_ref_dscclk(dccg, odm_pipe->stream_res.dsc->inst); odm_pipe->stream_res.dsc->funcs->dsc_disable(odm_pipe->stream_res.dsc); + } } } |