diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c index cac80ba69072..0d30d1d9d67e 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c @@ -126,16 +126,24 @@ void dcn20_update_clocks_update_dpp_dto(struct clk_mgr_internal *clk_mgr, void dcn20_update_clocks_update_dentist(struct clk_mgr_internal *clk_mgr, struct dc_state *context) { - int dpp_divider = DENTIST_DIVIDER_RANGE_SCALE_FACTOR - * clk_mgr->base.dentist_vco_freq_khz / clk_mgr->base.clks.dppclk_khz; - int disp_divider = DENTIST_DIVIDER_RANGE_SCALE_FACTOR - * clk_mgr->base.dentist_vco_freq_khz / clk_mgr->base.clks.dispclk_khz; - - uint32_t dppclk_wdivider = dentist_get_did_from_divider(dpp_divider); - uint32_t dispclk_wdivider = dentist_get_did_from_divider(disp_divider); + int dpp_divider = 0; + int disp_divider = 0; + uint32_t dppclk_wdivider = 0; + uint32_t dispclk_wdivider = 0; uint32_t current_dispclk_wdivider; uint32_t i; + if (clk_mgr->base.clks.dppclk_khz == 0 || clk_mgr->base.clks.dispclk_khz == 0) + return; + + dpp_divider = DENTIST_DIVIDER_RANGE_SCALE_FACTOR + * clk_mgr->base.dentist_vco_freq_khz / clk_mgr->base.clks.dppclk_khz; + disp_divider = DENTIST_DIVIDER_RANGE_SCALE_FACTOR + * clk_mgr->base.dentist_vco_freq_khz / clk_mgr->base.clks.dispclk_khz; + + dppclk_wdivider = dentist_get_did_from_divider(dpp_divider); + dispclk_wdivider = dentist_get_did_from_divider(disp_divider); + REG_GET(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_WDIVIDER, ¤t_dispclk_wdivider); @@ -436,7 +444,6 @@ void dcn2_read_clocks_from_hw_dentist(struct clk_mgr *clk_mgr_base) clk_mgr_base->clks.dppclk_khz = (DENTIST_DIVIDER_RANGE_SCALE_FACTOR * clk_mgr->base.dentist_vco_freq_khz) / dpp_divider; } - } void dcn2_get_clock(struct clk_mgr *clk_mgr, |