Commit 9024fb08 authored by Lang Yu's avatar Lang Yu Committed by Alex Deucher
Browse files

drm/amd/display: fix 64-bit division issue on 32-bit OS 



Replace "/" with div_u64 for 32-bit OS. On 32-bit OS,
the use of "/" for 64-bit division will cause build error,
i.e. "__udivdi3/__divdi3 undefined!".

Fixes: ea7154d8 ("drm/amd/display: Update dcn30_apply_idle_power_optimizations() code")
Signed-off-by: default avatarLang Yu <Lang.Yu@amd.com>
Acked-by: default avatarHuang Rui <ray.huang@amd.com>
Reviewed-by: default avatarBhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent d80d3da9

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c

+6 −6
Original line number Diff line number Diff line
@@ -772,8 +772,8 @@ bool dcn30_apply_idle_power_optimizations(struct dc *dc, bool enable) 
							cursor_cache_enable ? &cursor_attr : NULL)) {

				unsigned int v_total = stream->adjust.v_total_max ?

						stream->adjust.v_total_max : stream->timing.v_total;

				unsigned int refresh_hz = (unsigned long long) stream->timing.pix_clk_100hz *

						100LL /	(v_total * stream->timing.h_total);

				unsigned int refresh_hz = div_u64((unsigned long long) stream->timing.pix_clk_100hz *

						100LL, (v_total * stream->timing.h_total));



				/*

				 * one frame time in microsec:
@@ -800,8 +800,8 @@ bool dcn30_apply_idle_power_optimizations(struct dc *dc, bool enable) 
				unsigned int denom = refresh_hz * 6528;

				unsigned int stutter_period = dc->current_state->perf_params.stutter_period_us;



				tmr_delay = (((1000000LL + 2 * stutter_period * refresh_hz) *

						(100LL + dc->debug.mall_additional_timer_percent) + denom - 1) /

				tmr_delay = div_u64(((1000000LL + 2 * stutter_period * refresh_hz) *

						(100LL + dc->debug.mall_additional_timer_percent) + denom - 1),

						denom) - 64LL;



				/* scale should be increased until it fits into 6 bits */
@@ -815,8 +815,8 @@ bool dcn30_apply_idle_power_optimizations(struct dc *dc, bool enable) 
					}



					denom *= 2;

					tmr_delay = (((1000000LL + 2 * stutter_period * refresh_hz) *

							(100LL + dc->debug.mall_additional_timer_percent) + denom - 1) /

					tmr_delay = div_u64(((1000000LL + 2 * stutter_period * refresh_hz) *

							(100LL + dc->debug.mall_additional_timer_percent) + denom - 1),

							denom) - 64LL;

				}