diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 145 |
1 files changed, 144 insertions, 1 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 d4dde1d86b72..8ba895c4b445 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 @@ -2741,6 +2741,147 @@ static void dcn10_set_cursor_sdr_white_level(struct pipe_ctx *pipe_ctx) pipe_ctx->plane_res.dpp, &opt_attr); } +/** +* apply_front_porch_workaround TODO FPGA still need? +* +* This is a workaround for a bug that has existed since R5xx and has not been +* fixed keep Front porch at minimum 2 for Interlaced mode or 1 for progressive. +*/ +static void apply_front_porch_workaround( + struct dc_crtc_timing *timing) +{ + if (timing->flags.INTERLACE == 1) { + if (timing->v_front_porch < 2) + timing->v_front_porch = 2; + } else { + if (timing->v_front_porch < 1) + timing->v_front_porch = 1; + } +} + +int get_vupdate_offset_from_vsync(struct pipe_ctx *pipe_ctx) +{ + struct timing_generator *optc = pipe_ctx->stream_res.tg; + const struct dc_crtc_timing *dc_crtc_timing = &pipe_ctx->stream->timing; + struct dc_crtc_timing patched_crtc_timing; + int vesa_sync_start; + int asic_blank_end; + int interlace_factor; + int vertical_line_start; + + patched_crtc_timing = *dc_crtc_timing; + apply_front_porch_workaround(&patched_crtc_timing); + + interlace_factor = patched_crtc_timing.flags.INTERLACE ? 2 : 1; + + vesa_sync_start = patched_crtc_timing.v_addressable + + patched_crtc_timing.v_border_bottom + + patched_crtc_timing.v_front_porch; + + asic_blank_end = (patched_crtc_timing.v_total - + vesa_sync_start - + patched_crtc_timing.v_border_top) + * interlace_factor; + + vertical_line_start = asic_blank_end - + optc->dlg_otg_param.vstartup_start + 1; + + return vertical_line_start; +} + +static void calc_vupdate_position( + struct pipe_ctx *pipe_ctx, + uint32_t *start_line, + uint32_t *end_line) +{ + const struct dc_crtc_timing *dc_crtc_timing = &pipe_ctx->stream->timing; + int vline_int_offset_from_vupdate = + pipe_ctx->stream->periodic_interrupt0.lines_offset; + int vupdate_offset_from_vsync = get_vupdate_offset_from_vsync(pipe_ctx); + int start_position; + + if (vline_int_offset_from_vupdate > 0) + vline_int_offset_from_vupdate--; + else if (vline_int_offset_from_vupdate < 0) + vline_int_offset_from_vupdate++; + + start_position = vline_int_offset_from_vupdate + vupdate_offset_from_vsync; + + if (start_position >= 0) + *start_line = start_position; + else + *start_line = dc_crtc_timing->v_total + start_position - 1; + + *end_line = *start_line + 2; + + if (*end_line >= dc_crtc_timing->v_total) + *end_line = 2; +} + +static void cal_vline_position( + struct pipe_ctx *pipe_ctx, + enum vline_select vline, + uint32_t *start_line, + uint32_t *end_line) +{ + enum vertical_interrupt_ref_point ref_point = INVALID_POINT; + + if (vline == VLINE0) + ref_point = pipe_ctx->stream->periodic_interrupt0.ref_point; + else if (vline == VLINE1) + ref_point = pipe_ctx->stream->periodic_interrupt1.ref_point; + + switch (ref_point) { + case START_V_UPDATE: + calc_vupdate_position( + pipe_ctx, + start_line, + end_line); + break; + case START_V_SYNC: + // Suppose to do nothing because vsync is 0; + break; + default: + ASSERT(0); + break; + } +} + +static void dcn10_setup_periodic_interrupt( + struct pipe_ctx *pipe_ctx, + enum vline_select vline) +{ + struct timing_generator *tg = pipe_ctx->stream_res.tg; + + if (vline == VLINE0) { + uint32_t start_line = 0; + uint32_t end_line = 0; + + cal_vline_position(pipe_ctx, vline, &start_line, &end_line); + + tg->funcs->setup_vertical_interrupt0(tg, start_line, end_line); + + } else if (vline == VLINE1) { + pipe_ctx->stream_res.tg->funcs->setup_vertical_interrupt1( + tg, + pipe_ctx->stream->periodic_interrupt1.lines_offset); + } +} + +static void dcn10_setup_vupdate_interrupt(struct pipe_ctx *pipe_ctx) +{ + struct timing_generator *tg = pipe_ctx->stream_res.tg; + int start_line = get_vupdate_offset_from_vsync(pipe_ctx); + + if (start_line < 0) { + ASSERT(0); + start_line = 0; + } + + if (tg->funcs->setup_vertical_interrupt2) + tg->funcs->setup_vertical_interrupt2(tg, start_line); +} + static const struct hw_sequencer_funcs dcn10_funcs = { .program_gamut_remap = program_gamut_remap, .init_hw = dcn10_init_hw, @@ -2790,7 +2931,9 @@ static const struct hw_sequencer_funcs dcn10_funcs = { .set_cursor_attribute = dcn10_set_cursor_attribute, .set_cursor_sdr_white_level = dcn10_set_cursor_sdr_white_level, .disable_stream_gating = NULL, - .enable_stream_gating = NULL + .enable_stream_gating = NULL, + .setup_periodic_interrupt = dcn10_setup_periodic_interrupt, + .setup_vupdate_interrupt = dcn10_setup_vupdate_interrupt }; |