diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c | 59 |
1 files changed, 59 insertions, 0 deletions
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 0355dcb8554a..51c98e99237e 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c @@ -1208,6 +1208,64 @@ bool optc1_is_stereo_left_eye(struct timing_generator *optc) return ret; } +bool optc1_is_matching_timing(struct timing_generator *tg, + const struct dc_crtc_timing *otg_timing) +{ + struct dc_crtc_timing hw_crtc_timing = {0}; + struct dcn_otg_state s = {0}; + + if (tg == NULL || otg_timing == NULL) + return false; + + optc1_read_otg_state(DCN10TG_FROM_TG(tg), &s); + + hw_crtc_timing.h_total = s.h_total + 1; + hw_crtc_timing.h_addressable = s.h_total - ((s.h_total - s.h_blank_start) + s.h_blank_end); + hw_crtc_timing.h_front_porch = s.h_total + 1 - s.h_blank_start; + hw_crtc_timing.h_sync_width = s.h_sync_a_end - s.h_sync_a_start; + + hw_crtc_timing.v_total = s.v_total + 1; + hw_crtc_timing.v_addressable = s.v_total - ((s.v_total - s.v_blank_start) + s.v_blank_end); + hw_crtc_timing.v_front_porch = s.v_total + 1 - s.v_blank_start; + hw_crtc_timing.v_sync_width = s.v_sync_a_end - s.v_sync_a_start; + + if (otg_timing->h_total != hw_crtc_timing.h_total) + return false; + + if (otg_timing->h_border_left != hw_crtc_timing.h_border_left) + return false; + + if (otg_timing->h_addressable != hw_crtc_timing.h_addressable) + return false; + + if (otg_timing->h_border_right != hw_crtc_timing.h_border_right) + return false; + + if (otg_timing->h_front_porch != hw_crtc_timing.h_front_porch) + return false; + + if (otg_timing->h_sync_width != hw_crtc_timing.h_sync_width) + return false; + + if (otg_timing->v_total != hw_crtc_timing.v_total) + return false; + + if (otg_timing->v_border_top != hw_crtc_timing.v_border_top) + return false; + + if (otg_timing->v_addressable != hw_crtc_timing.v_addressable) + return false; + + if (otg_timing->v_border_bottom != hw_crtc_timing.v_border_bottom) + return false; + + if (otg_timing->v_sync_width != hw_crtc_timing.v_sync_width) + return false; + + return true; +} + + void optc1_read_otg_state(struct optc *optc1, struct dcn_otg_state *s) { @@ -1404,6 +1462,7 @@ static const struct timing_generator_funcs dcn10_tg_funcs = { .get_frame_count = optc1_get_vblank_counter, .get_scanoutpos = optc1_get_crtc_scanoutpos, .get_otg_active_size = optc1_get_otg_active_size, + .is_matching_timing = optc1_is_matching_timing, .set_early_control = optc1_set_early_control, /* used by enable_timing_synchronization. Not need for FPGA */ .wait_for_state = optc1_wait_for_state, |