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| author | Qili Lu <qili.lu@amd.com> | 2024-08-21 16:26:13 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-09-06 17:41:07 -0400 |
| commit | f5a972dfe3e993f09cf12bd36389a942ecd23350 (patch) | |
| tree | 17698b24b8a29ac71d259292f7d3b063bc0f7c0a | |
| parent | 5359d5bc975466e8791d7f870ea4a96f1b0973bf (diff) | |
| download | linux-stable-f5a972dfe3e993f09cf12bd36389a942ecd23350.tar.gz linux-stable-f5a972dfe3e993f09cf12bd36389a942ecd23350.tar.bz2 linux-stable-f5a972dfe3e993f09cf12bd36389a942ecd23350.zip | |
drm/amd/display: fix dccg root clock optimization related hang
[Why]
enable dpp rcg before we disable dppclk in hw_init cause system
hang/reboot
[How]
we remove dccg rcg related code from init into a separate function and
call it after we init pipe
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Qili Lu <qili.lu@amd.com>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
4 files changed, 15 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dccg/dcn35/dcn35_dccg.c b/drivers/gpu/drm/amd/display/dc/dccg/dcn35/dcn35_dccg.c index 18267ccd89a7..838d72eaa87f 100644 --- a/drivers/gpu/drm/amd/display/dc/dccg/dcn35/dcn35_dccg.c +++ b/drivers/gpu/drm/amd/display/dc/dccg/dcn35/dcn35_dccg.c @@ -1748,10 +1748,6 @@ void dccg35_init(struct dccg *dccg) dccg35_set_dpstreamclk_root_clock_gating(dccg, otg_inst, false); } - if (dccg->ctx->dc->debug.root_clock_optimization.bits.dpp) - for (otg_inst = 0; otg_inst < 4; otg_inst++) - dccg35_set_dppclk_root_clock_gating(dccg, otg_inst, 0); - /* dccg35_enable_global_fgcg_rep( dccg, dccg->ctx->dc->debug.enable_fine_grain_clock_gating.bits @@ -2336,6 +2332,14 @@ static void dccg35_disable_symclk_se_cb( /* DMU PHY sequence switches SYMCLK_BE (link_enc_inst) to ref clock once PHY is turned off */ } +void dccg35_root_gate_disable_control(struct dccg *dccg, uint32_t pipe_idx, uint32_t disable_clock_gating) +{ + + if (dccg->ctx->dc->debug.root_clock_optimization.bits.dpp) { + dccg35_set_dppclk_root_clock_gating(dccg, pipe_idx, disable_clock_gating); + } +} + static const struct dccg_funcs dccg35_funcs_new = { .update_dpp_dto = dccg35_update_dpp_dto_cb, .dpp_root_clock_control = dccg35_dpp_root_clock_control_cb, @@ -2396,7 +2400,7 @@ static const struct dccg_funcs dccg35_funcs = { .enable_symclk_se = dccg35_enable_symclk_se, .disable_symclk_se = dccg35_disable_symclk_se, .set_dtbclk_p_src = dccg35_set_dtbclk_p_src, - + .dccg_root_gate_disable_control = dccg35_root_gate_disable_control, }; struct dccg *dccg35_create( diff --git a/drivers/gpu/drm/amd/display/dc/dccg/dcn35/dcn35_dccg.h b/drivers/gpu/drm/amd/display/dc/dccg/dcn35/dcn35_dccg.h index 1586a45ca3bd..51f98c5c51c4 100644 --- a/drivers/gpu/drm/amd/display/dc/dccg/dcn35/dcn35_dccg.h +++ b/drivers/gpu/drm/amd/display/dc/dccg/dcn35/dcn35_dccg.h @@ -241,6 +241,7 @@ struct dccg *dccg35_create( void dccg35_init(struct dccg *dccg); void dccg35_enable_global_fgcg_rep(struct dccg *dccg, bool value); +void dccg35_root_gate_disable_control(struct dccg *dccg, uint32_t pipe_idx, uint32_t disable_clock_gating); #endif //__DCN35_DCCG_H__ 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 5c5b2dd86f58..479fd3e89e5a 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 @@ -240,6 +240,10 @@ void dcn35_init_hw(struct dc *dc) dc->res_pool->hubbub->funcs->allow_self_refresh_control(dc->res_pool->hubbub, !dc->res_pool->hubbub->ctx->dc->debug.disable_stutter); } + if (res_pool->dccg->funcs->dccg_root_gate_disable_control) { + for (i = 0; i < res_pool->pipe_count; i++) + res_pool->dccg->funcs->dccg_root_gate_disable_control(res_pool->dccg, i, 0); + } for (i = 0; i < res_pool->audio_count; i++) { struct audio *audio = res_pool->audios[i]; diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h b/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h index d619eb229a62..e94e9ba60f55 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h @@ -213,6 +213,7 @@ struct dccg_funcs { uint32_t otg_inst); void (*set_dto_dscclk)(struct dccg *dccg, uint32_t dsc_inst); void (*set_ref_dscclk)(struct dccg *dccg, uint32_t dsc_inst); + void (*dccg_root_gate_disable_control)(struct dccg *dccg, uint32_t pipe_idx, uint32_t disable_clock_gating); }; #endif //__DAL_DCCG_H__ |