From 4a2de49201a3d53abc4c27c8a93e368d7e65c926 Mon Sep 17 00:00:00 2001 From: Lewis Huang Date: Sat, 6 Jul 2019 16:02:25 -0500 Subject: [PATCH 4179/4736] drm/amd/display: Temporary workaround to toggle watermark setting [Why] Watermarks not propagated to DCHUBP after it is powered on [How] Add temoprary function apply_DEDCN21_147_wa to apply wm settings for Renoir Signed-off-by: Lewis Huang Reviewed-by: Tony Cheng Acked-by: Bhawanpreet Lakha Reviewed-by: Roman Li --- drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 4 ++++ drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubbub.c | 9 +++++++++ drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c | 1 + drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h | 1 + 4 files changed, 15 insertions(+) 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 ce2530509e12..6229a8ca0013 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c @@ -1533,6 +1533,10 @@ static void dcn20_program_front_end_for_ctx( msleep(1); } } + + /* WA to apply WM setting*/ + if (dc->hwseq->wa.DEGVIDCN21) + dc->res_pool->hubbub->funcs->apply_DEDCN21_147_wa(dc->res_pool->hubbub); } diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubbub.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubbub.c index fdfbdeb32459..2232ccf14bdd 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubbub.c +++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubbub.c @@ -616,6 +616,14 @@ void hubbub21_wm_read_state(struct hubbub *hubbub, DCHUBBUB_ARB_ALLOW_DRAM_CLK_CHANGE_WATERMARK_D, &s->dram_clk_chanage); } +void hubbub21_apply_DEDCN21_147_wa(struct hubbub *hubbub) +{ + struct dcn20_hubbub *hubbub1 = TO_DCN20_HUBBUB(hubbub); + uint32_t prog_wm_value; + + prog_wm_value = REG_READ(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_A); + REG_WRITE(DCHUBBUB_ARB_DATA_URGENCY_WATERMARK_A, prog_wm_value); +} static const struct hubbub_funcs hubbub21_funcs = { .update_dchub = hubbub2_update_dchub, @@ -627,6 +635,7 @@ static const struct hubbub_funcs hubbub21_funcs = { .wm_read_state = hubbub21_wm_read_state, .get_dchub_ref_freq = hubbub2_get_dchub_ref_freq, .program_watermarks = hubbub21_program_watermarks, + .apply_DEDCN21_147_wa = hubbub21_apply_DEDCN21_147_wa, }; void hubbub21_construct(struct dcn20_hubbub *hubbub, diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c index 05baf0e4d79f..a9e2dd71d7a6 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c @@ -1470,6 +1470,7 @@ static struct dce_hwseq *dcn21_hwseq_create( hws->regs = &hwseq_reg; hws->shifts = &hwseq_shift; hws->masks = &hwseq_mask; + hws->wa.DEGVIDCN21 = true; } return hws; } diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h b/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h index a6297219d7fc..c81a17aeaa25 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h @@ -147,6 +147,7 @@ struct hubbub_funcs { bool (*is_allow_self_refresh_enabled)(struct hubbub *hubbub); void (*allow_self_refresh_control)(struct hubbub *hubbub, bool allow); + void (*apply_DEDCN21_147_wa)(struct hubbub *hubbub); }; struct hubbub { -- 2.17.1