From 4866b0bfea40cddb7275c88aeb95b47dac3d2a35 Mon Sep 17 00:00:00 2001 From: Martin Leung Date: Fri, 10 Dec 2021 15:04:07 -0800 Subject: drm/amd/display: implement dc_mode_memclk why: Need interface to lower clocks when in dc (power save) mode. Must be able to work with p_state unsupported cases Can cause flicker when OS notifies us of dc state change how: added dal3 interface for KMD added pathway to query smu for this softmax added blank before clock change to override underflow added logic to change clk based on pstatesupport and softmax added logic in prepare/optimize_bw to conform while changing clocks Reviewed-by: Aric Cyr Acked-by: Pavle Kotarac Tested-by: Daniel Wheeler Signed-off-by: Martin Leung Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c | 14 +++++++++++--- drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.h | 1 + drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 10 ++++++++++ drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.h | 4 ++++ 4 files changed, 26 insertions(+), 3 deletions(-) (limited to 'drivers/gpu/drm/amd/display/dc/dcn20') diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c index e293b3050cd0..dc1752e9f461 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.c @@ -928,6 +928,16 @@ bool hubp2_is_flip_pending(struct hubp *hubp) } void hubp2_set_blank(struct hubp *hubp, bool blank) +{ + hubp2_set_blank_regs(hubp, blank); + + if (blank) { + hubp->mpcc_id = 0xf; + hubp->opp_id = OPP_ID_INVALID; + } +} + +void hubp2_set_blank_regs(struct hubp *hubp, bool blank) { struct dcn20_hubp *hubp2 = TO_DCN20_HUBP(hubp); uint32_t blank_en = blank ? 1 : 0; @@ -950,9 +960,6 @@ void hubp2_set_blank(struct hubp *hubp, bool blank) HUBP_NO_OUTSTANDING_REQ, 1, 1, 200); } - - hubp->mpcc_id = 0xf; - hubp->opp_id = OPP_ID_INVALID; } } @@ -1602,6 +1609,7 @@ static struct hubp_funcs dcn20_hubp_funcs = { .hubp_setup_interdependent = hubp2_setup_interdependent, .hubp_set_vm_system_aperture_settings = hubp2_set_vm_system_aperture_settings, .set_blank = hubp2_set_blank, + .set_blank_regs = hubp2_set_blank_regs, .dcc_control = hubp2_dcc_control, .mem_program_viewport = min_set_viewport, .set_cursor_attributes = hubp2_cursor_set_attributes, diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.h b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.h index eea2254b15e4..9204c3ef323b 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.h +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubp.h @@ -330,6 +330,7 @@ void hubp2_program_surface_config( bool hubp2_is_flip_pending(struct hubp *hubp); void hubp2_set_blank(struct hubp *hubp, bool blank); +void hubp2_set_blank_regs(struct hubp *hubp, bool blank); void hubp2_cursor_set_position( struct hubp *hubp, diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c index de4723f33c60..a17fe8ab2904 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c @@ -615,6 +615,11 @@ void dcn20_disable_plane(struct dc *dc, struct pipe_ctx *pipe_ctx) pipe_ctx->pipe_idx); } +void dcn20_disable_pixel_data(struct dc *dc, struct pipe_ctx *pipe_ctx, bool blank) +{ + dcn20_blank_pixel_data(dc, pipe_ctx, blank); +} + static int calc_mpc_flow_ctrl_cnt(const struct dc_stream_state *stream, int opp_cnt) { @@ -1840,6 +1845,11 @@ void dcn20_optimize_bandwidth( dc->res_pool->ref_clocks.dchub_ref_clock_inKhz / 1000, true); + if (dc->clk_mgr->dc_mode_softmax_enabled) + if (dc->clk_mgr->clks.dramclk_khz > dc->clk_mgr->bw_params->dc_mode_softmax_memclk * 1000 && + context->bw_ctx.bw.dcn.clk.dramclk_khz <= dc->clk_mgr->bw_params->dc_mode_softmax_memclk * 1000) + dc->clk_mgr->funcs->set_max_memclk(dc->clk_mgr, dc->clk_mgr->bw_params->dc_mode_softmax_memclk); + dc->clk_mgr->funcs->update_clocks( dc->clk_mgr, context, diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.h b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.h index 6bba191cd33e..33a36c02b2f8 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.h +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.h @@ -53,6 +53,10 @@ void dcn20_enable_stream(struct pipe_ctx *pipe_ctx); void dcn20_unblank_stream(struct pipe_ctx *pipe_ctx, struct dc_link_settings *link_settings); void dcn20_disable_plane(struct dc *dc, struct pipe_ctx *pipe_ctx); +void dcn20_disable_pixel_data( + struct dc *dc, + struct pipe_ctx *pipe_ctx, + bool blank); void dcn20_blank_pixel_data( struct dc *dc, struct pipe_ctx *pipe_ctx, -- cgit v1.2.3