diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c | 70 |
1 files changed, 67 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c index 372d53b5a34d..6e0c5c664fdc 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c @@ -123,7 +123,7 @@ void dcn20_update_clocks_update_dpp_dto(struct clk_mgr_internal *clk_mgr, } } -void dcn20_update_clocks_update_dentist(struct clk_mgr_internal *clk_mgr) +void dcn20_update_clocks_update_dentist(struct clk_mgr_internal *clk_mgr, struct dc_state *context) { int dpp_divider = DENTIST_DIVIDER_RANGE_SCALE_FACTOR * clk_mgr->base.dentist_vco_freq_khz / clk_mgr->base.clks.dppclk_khz; @@ -132,6 +132,68 @@ void dcn20_update_clocks_update_dentist(struct clk_mgr_internal *clk_mgr) uint32_t dppclk_wdivider = dentist_get_did_from_divider(dpp_divider); uint32_t dispclk_wdivider = dentist_get_did_from_divider(disp_divider); + uint32_t current_dispclk_wdivider; + uint32_t i; + + REG_GET(DENTIST_DISPCLK_CNTL, + DENTIST_DISPCLK_WDIVIDER, ¤t_dispclk_wdivider); + + /* When changing divider to or from 127, some extra programming is required to prevent corruption */ + if (current_dispclk_wdivider == 127 && dispclk_wdivider != 127) { + for (i = 0; i < clk_mgr->base.ctx->dc->res_pool->pipe_count; i++) { + struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i]; + uint32_t fifo_level; + struct dccg *dccg = clk_mgr->base.ctx->dc->res_pool->dccg; + struct stream_encoder *stream_enc = pipe_ctx->stream_res.stream_enc; + int32_t N; + int32_t j; + + if (!pipe_ctx->stream) + continue; + /* Virtual encoders don't have this function */ + if (!stream_enc->funcs->get_fifo_cal_average_level) + continue; + fifo_level = stream_enc->funcs->get_fifo_cal_average_level( + stream_enc); + N = fifo_level / 4; + dccg->funcs->set_fifo_errdet_ovr_en( + dccg, + true); + for (j = 0; j < N - 4; j++) + dccg->funcs->otg_drop_pixel( + dccg, + pipe_ctx->stream_res.tg->inst); + dccg->funcs->set_fifo_errdet_ovr_en( + dccg, + false); + } + } else if (dispclk_wdivider == 127 && current_dispclk_wdivider != 127) { + REG_UPDATE(DENTIST_DISPCLK_CNTL, + DENTIST_DISPCLK_WDIVIDER, 126); + REG_WAIT(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_CHG_DONE, 1, 50, 100); + for (i = 0; i < clk_mgr->base.ctx->dc->res_pool->pipe_count; i++) { + struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i]; + struct dccg *dccg = clk_mgr->base.ctx->dc->res_pool->dccg; + struct stream_encoder *stream_enc = pipe_ctx->stream_res.stream_enc; + uint32_t fifo_level; + int32_t N; + int32_t j; + + if (!pipe_ctx->stream) + continue; + /* Virtual encoders don't have this function */ + if (!stream_enc->funcs->get_fifo_cal_average_level) + continue; + fifo_level = stream_enc->funcs->get_fifo_cal_average_level( + stream_enc); + N = fifo_level / 4; + dccg->funcs->set_fifo_errdet_ovr_en(dccg, true); + for (j = 0; j < 12 - N; j++) + dccg->funcs->otg_add_pixel(dccg, + pipe_ctx->stream_res.tg->inst); + dccg->funcs->set_fifo_errdet_ovr_en(dccg, false); + } + } REG_UPDATE(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_WDIVIDER, dispclk_wdivider); @@ -251,11 +313,11 @@ void dcn2_update_clocks(struct clk_mgr *clk_mgr_base, if (dpp_clock_lowered) { // if clock is being lowered, increase DTO before lowering refclk dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower); - dcn20_update_clocks_update_dentist(clk_mgr); + dcn20_update_clocks_update_dentist(clk_mgr, context); } else { // if clock is being raised, increase refclk before lowering DTO if (update_dppclk || update_dispclk) - dcn20_update_clocks_update_dentist(clk_mgr); + dcn20_update_clocks_update_dentist(clk_mgr, context); // always update dtos unless clock is lowered and not safe to lower dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower); } @@ -324,6 +386,8 @@ void dcn2_update_clocks_fpga(struct clk_mgr *clk_mgr, // Both fclk and ref_dppclk run on the same scemi clock. clk_mgr_int->dccg->ref_dppclk = clk_mgr->clks.fclk_khz; + /* TODO: set dtbclk in correct place */ + clk_mgr->clks.dtbclk_en = false; dm_set_dcn_clocks(clk_mgr->ctx, &clk_mgr->clks); } |