diff options
author | Robin Chen <robin.chen@amd.com> | 2023-12-20 15:31:28 +0300 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2024-03-20 20:37:37 +0300 |
commit | eed4edda910fe34dfae8c6bfbcf57f4593a54295 (patch) | |
tree | e81678d481ed5777c9939b08f67f993367e57450 /drivers/gpu/drm/amd | |
parent | c90835b0648edb78f4630b89a2897972c3571cbd (diff) | |
download | linux-eed4edda910fe34dfae8c6bfbcf57f4593a54295.tar.xz |
drm/amd/display: Support long vblank feature
[WHY]
We want to support low hz case, but the original
vtotal/vtotal_min/vtotal_max can't support more
than 0x7FFF.
[HOW]
We use the 2 HW reg to contorl long vblank case.
1. OTG_V_COUNT_STOP_CONTROL -> vcount_stop
2. OTG_V_COUNT_STOP_CONTROL2 -> vcount_stop_timer
vcount_stop define from which line we stop using vcount
and start using vcount2.
vcount_stop_timer define how long we use vcount2.
Ex:
Vtotal = 7
OTG_V_COUNT_STOP_CONTROL = 4
OTG_V_COUNT_STOP_CONTROL2 = 5
time : 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
vcount : 0, 1, 2, 3, - - - - - 4, 5, 6
vcount2 : 0, 1, 2, 3, 4,
Reviewed-by: Jun Lei <jun.lei@amd.com>
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: ChunTao Tso <chuntao.tso@amd.com>
Signed-off-by: Robin Chen<robin.chen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd')
12 files changed, 253 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 5c8b0183959c..64ab99628125 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -386,6 +386,30 @@ static void dc_perf_trace_destroy(struct dc_perf_trace **perf_trace) *perf_trace = NULL; } +static bool set_long_vtotal(struct dc *dc, struct dc_stream_state *stream, struct dc_crtc_timing_adjust *adjust) +{ + if (!dc || !stream || !adjust) + return false; + + if (!dc->current_state) + return false; + + int i; + + for (i = 0; i < MAX_PIPES; i++) { + struct pipe_ctx *pipe = &dc->current_state->res_ctx.pipe_ctx[i]; + + if (pipe->stream == stream && pipe->stream_res.tg) { + if (dc->hwss.set_long_vtotal) + dc->hwss.set_long_vtotal(&pipe, 1, adjust->v_total_min, adjust->v_total_max); + + return true; + } + } + + return false; +} + /** * dc_stream_adjust_vmin_vmax - look up pipe context & update parts of DRR * @dc: dc reference @@ -420,6 +444,15 @@ bool dc_stream_adjust_vmin_vmax(struct dc *dc, stream->adjust.v_total_mid = adjust->v_total_mid; stream->adjust.v_total_mid_frame_num = adjust->v_total_mid_frame_num; stream->adjust.v_total_min = adjust->v_total_min; + stream->adjust.allow_otg_v_count_halt = adjust->allow_otg_v_count_halt; + + if (dc->caps.max_v_total != 0 && + (adjust->v_total_max > dc->caps.max_v_total || adjust->v_total_min > dc->caps.max_v_total)) { + if (adjust->allow_otg_v_count_halt) + return set_long_vtotal(dc, stream, adjust); + else + return false; + } for (i = 0; i < MAX_PIPES; i++) { struct pipe_ctx *pipe = &dc->current_state->res_ctx.pipe_ctx[i]; diff --git a/drivers/gpu/drm/amd/display/dc/dc_hw_types.h b/drivers/gpu/drm/amd/display/dc/dc_hw_types.h index aae2f3a2660d..465e15f57f93 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_hw_types.h +++ b/drivers/gpu/drm/amd/display/dc/dc_hw_types.h @@ -974,6 +974,7 @@ struct dc_crtc_timing_adjust { uint32_t v_total_max; uint32_t v_total_mid; uint32_t v_total_mid_frame_num; + uint32_t allow_otg_v_count_halt; }; diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c index 4b92df23ff0d..2e8ec58a16eb 100644 --- a/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c @@ -1394,3 +1394,31 @@ void dcn35_set_static_screen_control(struct pipe_ctx **pipe_ctx, set_static_screen_control(pipe_ctx[i]->stream_res.tg, triggers, params->num_frames); } + +void dcn35_set_long_vblank(struct pipe_ctx **pipe_ctx, + int num_pipes, uint32_t v_total_min, uint32_t v_total_max) +{ + int i = 0; + struct long_vtotal_params params = {0}; + + params.vertical_total_max = v_total_max; + params.vertical_total_min = v_total_min; + + for (i = 0; i < num_pipes; i++) { + if (!pipe_ctx[i]) + continue; + + if (pipe_ctx[i]->stream) { + struct dc_crtc_timing *timing = &pipe_ctx[i]->stream->timing; + + if (timing) + params.vertical_blank_start = timing->v_total - timing->v_front_porch; + else + params.vertical_blank_start = 0; + + if ((pipe_ctx[i]->stream_res.tg != NULL) && pipe_ctx[i]->stream_res.tg->funcs && + pipe_ctx[i]->stream_res.tg->funcs->set_long_vtotal) + pipe_ctx[i]->stream_res.tg->funcs->set_long_vtotal(pipe_ctx[i]->stream_res.tg, ¶ms); + } + } +} diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.h b/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.h index c354efa6c1b2..7c33bea3f4e7 100644 --- a/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.h +++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.h @@ -93,4 +93,7 @@ void dcn35_set_drr(struct pipe_ctx **pipe_ctx, void dcn35_set_static_screen_control(struct pipe_ctx **pipe_ctx, int num_pipes, const struct dc_static_screen_params *params); +void dcn35_set_long_vblank(struct pipe_ctx **pipe_ctx, + int num_pipes, uint32_t v_total_min, uint32_t v_total_max); + #endif /* __DC_HWSS_DCN35_H__ */ diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_init.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_init.c index a93073055e7b..dce620d359a6 100644 --- a/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_init.c +++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_init.c @@ -122,7 +122,8 @@ static const struct hw_sequencer_funcs dcn35_funcs = { .hw_block_power_down = dcn35_hw_block_power_down, .root_clock_control = dcn35_root_clock_control, .set_idle_state = dcn35_set_idle_state, - .get_idle_state = dcn35_get_idle_state + .get_idle_state = dcn35_get_idle_state, + .set_long_vtotal = dcn35_set_long_vblank, }; static const struct hwseq_private_funcs dcn35_private_funcs = { diff --git a/drivers/gpu/drm/amd/display/dc/hwss/hw_sequencer.h b/drivers/gpu/drm/amd/display/dc/hwss/hw_sequencer.h index f89f205e42a1..26ea86316e50 100644 --- a/drivers/gpu/drm/amd/display/dc/hwss/hw_sequencer.h +++ b/drivers/gpu/drm/amd/display/dc/hwss/hw_sequencer.h @@ -429,6 +429,7 @@ struct hw_sequencer_funcs { bool (*is_pipe_topology_transition_seamless)(struct dc *dc, const struct dc_state *cur_ctx, const struct dc_state *new_ctx); + void (*set_long_vtotal)(struct pipe_ctx **pipe_ctx, int num_pipes, uint32_t v_total_min, uint32_t v_total_max); }; void color_space_to_black_color( diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/timing_generator.h b/drivers/gpu/drm/amd/display/dc/inc/hw/timing_generator.h index ffad8fe16c54..cd68ecc242c1 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw/timing_generator.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw/timing_generator.h @@ -64,6 +64,12 @@ struct drr_params { bool immediate_flip; }; +struct long_vtotal_params { + uint32_t vertical_total_min; + uint32_t vertical_total_max; + uint32_t vertical_blank_start; +}; + #define LEFT_EYE_3D_PRIMARY_SURFACE 1 #define RIGHT_EYE_3D_PRIMARY_SURFACE 0 @@ -331,6 +337,7 @@ struct timing_generator_funcs { void (*init_odm)(struct timing_generator *tg); void (*wait_drr_doublebuffer_pending_clear)(struct timing_generator *tg); + void (*set_long_vtotal)(struct timing_generator *optc, const struct long_vtotal_params *params); void (*wait_odm_doublebuffer_pending_clear)(struct timing_generator *tg); }; diff --git a/drivers/gpu/drm/amd/display/dc/optc/dcn10/dcn10_optc.h b/drivers/gpu/drm/amd/display/dc/optc/dcn10/dcn10_optc.h index 6c2e84d3967f..8a45d26b7531 100644 --- a/drivers/gpu/drm/amd/display/dc/optc/dcn10/dcn10_optc.h +++ b/drivers/gpu/drm/amd/display/dc/optc/dcn10/dcn10_optc.h @@ -129,6 +129,8 @@ struct dcn_optc_registers { uint32_t OTG_V_TOTAL_MID; uint32_t OTG_V_TOTAL_MIN; uint32_t OTG_V_TOTAL_CONTROL; + uint32_t OTG_V_COUNT_STOP_CONTROL; + uint32_t OTG_V_COUNT_STOP_CONTROL2; uint32_t OTG_TRIGA_CNTL; uint32_t OTG_TRIGA_MANUAL_TRIG; uint32_t OTG_MANUAL_FLOW_CONTROL; @@ -581,7 +583,9 @@ struct dcn_optc_registers { type OTG_CRC1_WINDOWB_X_END_READBACK;\ type OTG_CRC1_WINDOWB_Y_START_READBACK;\ type OTG_CRC1_WINDOWB_Y_END_READBACK;\ - type OPTC_FGCG_REP_DIS; + type OPTC_FGCG_REP_DIS;\ + type OTG_V_COUNT_STOP;\ + type OTG_V_COUNT_STOP_TIMER; struct dcn_optc_shift { TG_REG_FIELD_LIST(uint8_t) diff --git a/drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.c b/drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.c index 5b1547508850..d393be30dff8 100644 --- a/drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.c +++ b/drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.c @@ -32,6 +32,7 @@ #include "reg_helper.h" #include "dc.h" #include "dcn_calc_math.h" +#include "dc_dmub_srv.h" #define REG(reg)\ optc1->tg_regs->reg @@ -213,6 +214,167 @@ static bool optc35_configure_crc(struct timing_generator *optc, return true; } +static void optc35_setup_manual_trigger(struct timing_generator *optc) +{ + if (!optc || !optc->ctx) + return; + + struct optc *optc1 = DCN10TG_FROM_TG(optc); + struct dc *dc = optc->ctx->dc; + + if (dc->caps.dmub_caps.mclk_sw && !dc->debug.disable_fams) + dc_dmub_srv_set_drr_manual_trigger_cmd(dc, optc->inst); + else { + /* + * MIN_MASK_EN is gone and MASK is now always enabled. + * + * To get it to it work with manual trigger we need to make sure + * we program the correct bit. + */ + REG_UPDATE_4(OTG_V_TOTAL_CONTROL, + OTG_V_TOTAL_MIN_SEL, 1, + OTG_V_TOTAL_MAX_SEL, 1, + OTG_FORCE_LOCK_ON_EVENT, 0, + OTG_SET_V_TOTAL_MIN_MASK, (1 << 1)); /* TRIGA */ + + // Setup manual flow control for EOF via TRIG_A + if (optc->funcs && optc->funcs->setup_manual_trigger) + optc->funcs->setup_manual_trigger(optc); + } +} + +void optc35_set_drr( + struct timing_generator *optc, + const struct drr_params *params) +{ + if (!optc || !params) + return; + + struct optc *optc1 = DCN10TG_FROM_TG(optc); + uint32_t max_otg_v_total = optc1->max_v_total - 1; + + if (params != NULL && + params->vertical_total_max > 0 && + params->vertical_total_min > 0) { + + if (params->vertical_total_mid != 0) { + + REG_SET(OTG_V_TOTAL_MID, 0, + OTG_V_TOTAL_MID, params->vertical_total_mid - 1); + + REG_UPDATE_2(OTG_V_TOTAL_CONTROL, + OTG_VTOTAL_MID_REPLACING_MAX_EN, 1, + OTG_VTOTAL_MID_FRAME_NUM, + (uint8_t)params->vertical_total_mid_frame_num); + + } + + if (optc->funcs && optc->funcs->set_vtotal_min_max) + optc->funcs->set_vtotal_min_max(optc, + params->vertical_total_min - 1, params->vertical_total_max - 1); + optc35_setup_manual_trigger(optc); + } else { + REG_UPDATE_4(OTG_V_TOTAL_CONTROL, + OTG_SET_V_TOTAL_MIN_MASK, 0, + OTG_V_TOTAL_MIN_SEL, 0, + OTG_V_TOTAL_MAX_SEL, 0, + OTG_FORCE_LOCK_ON_EVENT, 0); + + if (optc->funcs && optc->funcs->set_vtotal_min_max) + optc->funcs->set_vtotal_min_max(optc, 0, 0); + } + + REG_WRITE(OTG_V_COUNT_STOP_CONTROL, max_otg_v_total); + REG_WRITE(OTG_V_COUNT_STOP_CONTROL2, 0); +} + +static void optc35_set_long_vtotal( + struct timing_generator *optc, + const struct long_vtotal_params *params) +{ + if (!optc || !params) + return; + + struct optc *optc1 = DCN10TG_FROM_TG(optc); + uint32_t vcount_stop_timer = 0, vcount_stop = 0; + uint32_t max_otg_v_total = optc1->max_v_total - 1; + + if (params->vertical_total_min <= max_otg_v_total && params->vertical_total_max <= max_otg_v_total) + return; + + if (params->vertical_total_max == 0 || params->vertical_total_min == 0) { + REG_UPDATE_4(OTG_V_TOTAL_CONTROL, + OTG_SET_V_TOTAL_MIN_MASK, 0, + OTG_V_TOTAL_MIN_SEL, 0, + OTG_V_TOTAL_MAX_SEL, 0, + OTG_FORCE_LOCK_ON_EVENT, 0); + + if (optc->funcs && optc->funcs->set_vtotal_min_max) + optc->funcs->set_vtotal_min_max(optc, 0, 0); + } else if (params->vertical_total_max == params->vertical_total_min) { + vcount_stop = params->vertical_blank_start; + vcount_stop_timer = params->vertical_total_max - max_otg_v_total; + + REG_UPDATE_4(OTG_V_TOTAL_CONTROL, + OTG_V_TOTAL_MIN_SEL, 1, + OTG_V_TOTAL_MAX_SEL, 1, + OTG_FORCE_LOCK_ON_EVENT, 0, + OTG_SET_V_TOTAL_MIN_MASK, 0); + + if (optc->funcs && optc->funcs->set_vtotal_min_max) + optc->funcs->set_vtotal_min_max(optc, max_otg_v_total, max_otg_v_total); + + REG_WRITE(OTG_V_COUNT_STOP_CONTROL, vcount_stop); + REG_WRITE(OTG_V_COUNT_STOP_CONTROL2, vcount_stop_timer); + } else { + // Variable rate, keep DRR trigger mask + if (params->vertical_total_min > max_otg_v_total) { + // cannot be supported + // If MAX_OTG_V_COUNT < DRR trigger < v_total_min < v_total_max, + // DRR trigger will drop the vtotal counting directly to a new frame. + // But it should trigger between v_total_min and v_total_max. + ASSERT(0); + + REG_UPDATE_4(OTG_V_TOTAL_CONTROL, + OTG_SET_V_TOTAL_MIN_MASK, 0, + OTG_V_TOTAL_MIN_SEL, 0, + OTG_V_TOTAL_MAX_SEL, 0, + OTG_FORCE_LOCK_ON_EVENT, 0); + + if (optc->funcs && optc->funcs->set_vtotal_min_max) + optc->funcs->set_vtotal_min_max(optc, 0, 0); + + REG_WRITE(OTG_V_COUNT_STOP_CONTROL, max_otg_v_total); + REG_WRITE(OTG_V_COUNT_STOP_CONTROL2, 0); + } else { + // For total_min <= MAX_OTG_V_COUNT and total_max > MAX_OTG_V_COUNT + vcount_stop = params->vertical_total_min; + vcount_stop_timer = params->vertical_total_max - max_otg_v_total; + + // Example: + // params->vertical_total_min 1000 + // params->vertical_total_max 2000 + // MAX_OTG_V_COUNT_STOP = 1500 + // + // If DRR event not happened, + // time 0,1,2,3,4,...1000,1001,........,1500,1501,1502, ...1999 + // vcount 0,1,2,3,4....1000...................,1001,1002,1003,...1399 + // vcount2 0,1,2,3,4,..499, + // else (DRR event happened, ex : at line 1004) + // time 0,1,2,3,4,...1000,1001.....1004, 0 + // vcount 0,1,2,3,4....1000,.............. 0 (new frame) + // vcount2 0,1,2, 3, - + if (optc->funcs && optc->funcs->set_vtotal_min_max) + optc->funcs->set_vtotal_min_max(optc, + params->vertical_total_min - 1, max_otg_v_total); + optc35_setup_manual_trigger(optc); + + REG_WRITE(OTG_V_COUNT_STOP_CONTROL, vcount_stop); + REG_WRITE(OTG_V_COUNT_STOP_CONTROL2, vcount_stop_timer); + } + } +} + static struct timing_generator_funcs dcn35_tg_funcs = { .validate_timing = optc1_validate_timing, .program_timing = optc1_program_timing, @@ -245,7 +407,7 @@ static struct timing_generator_funcs dcn35_tg_funcs = { .lock_doublebuffer_enable = optc3_lock_doublebuffer_enable, .lock_doublebuffer_disable = optc3_lock_doublebuffer_disable, .enable_optc_clock = optc1_enable_optc_clock, - .set_drr = optc31_set_drr, + .set_drr = optc35_set_drr, .get_last_used_drr_vtotal = optc2_get_last_used_drr_vtotal, .set_vtotal_min_max = optc1_set_vtotal_min_max, .set_static_screen_control = optc1_set_static_screen_control, @@ -275,6 +437,7 @@ static struct timing_generator_funcs dcn35_tg_funcs = { .setup_manual_trigger = optc2_setup_manual_trigger, .get_hw_timing = optc1_get_hw_timing, .init_odm = optc3_init_odm, + .set_long_vtotal = optc35_set_long_vtotal, }; void dcn35_timing_generator_init(struct optc *optc1) diff --git a/drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.h b/drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.h index 1f422e4c468f..d077e2392379 100644 --- a/drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.h +++ b/drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.h @@ -65,10 +65,14 @@ SF(OTG0_OTG_CRC1_WINDOWB_X_CONTROL_READBACK, OTG_CRC1_WINDOWB_X_END_READBACK, mask_sh),\ SF(OTG0_OTG_CRC1_WINDOWB_Y_CONTROL_READBACK, OTG_CRC1_WINDOWB_Y_START_READBACK, mask_sh),\ SF(OTG0_OTG_CRC1_WINDOWB_Y_CONTROL_READBACK, OTG_CRC1_WINDOWB_Y_END_READBACK, mask_sh),\ - SF(OPTC_CLOCK_CONTROL, OPTC_FGCG_REP_DIS, mask_sh) + SF(OPTC_CLOCK_CONTROL, OPTC_FGCG_REP_DIS, mask_sh),\ + SF(OTG0_OTG_V_COUNT_STOP_CONTROL, OTG_V_COUNT_STOP, mask_sh),\ + SF(OTG0_OTG_V_COUNT_STOP_CONTROL2, OTG_V_COUNT_STOP_TIMER, mask_sh) void dcn35_timing_generator_init(struct optc *optc1); void dcn35_timing_generator_set_fgcg(struct optc *optc1, bool enable); +void optc35_set_drr(struct timing_generator *optc, const struct drr_params *params); + #endif /* __DC_OPTC_DCN35_H__ */ diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.h b/drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.h index a51c4a9eaafe..f97bb4cb3761 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.h +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.h @@ -240,6 +240,8 @@ struct resource_pool *dcn35_create_resource_pool( SRI_ARR(OTG_V_TOTAL_MAX, OTG, inst),\ SRI_ARR(OTG_V_TOTAL_MIN, OTG, inst),\ SRI_ARR(OTG_V_TOTAL_CONTROL, OTG, inst),\ + SRI_ARR(OTG_V_COUNT_STOP_CONTROL, OTG, inst),\ + SRI_ARR(OTG_V_COUNT_STOP_CONTROL2, OTG, inst),\ SRI_ARR(OTG_TRIGA_CNTL, OTG, inst),\ SRI_ARR(OTG_FORCE_COUNT_NOW_CNTL, OTG, inst),\ SRI_ARR(OTG_STATIC_SCREEN_CONTROL, OTG, inst),\ diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c index 3955b7e4b2e2..fbaa6effd0e3 100644 --- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c +++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c @@ -1126,6 +1126,8 @@ void mod_freesync_build_vrr_params(struct mod_freesync *mod_freesync, in_out_vrr->adjust.v_total_min = stream->timing.v_total; in_out_vrr->adjust.v_total_max = stream->timing.v_total; } + + in_out_vrr->adjust.allow_otg_v_count_halt = (in_config->state == VRR_STATE_ACTIVE_FIXED) ? true : false; } void mod_freesync_handle_preflip(struct mod_freesync *mod_freesync, |