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* [PATCH] drm/i915/display: Update vtotal math to address 32b build
@ 2024-06-12  6:29 Mitul Golani
  2024-06-12  6:36 ` ✓ CI.Patch_applied: success for drm/i915/display: Update vtotal math to address 32b build (rev2) Patchwork
                   ` (8 more replies)
  0 siblings, 9 replies; 11+ messages in thread
From: Mitul Golani @ 2024-06-12  6:29 UTC (permalink / raw)
  To: intel-xe

Fix vtotal division calculation which works for 32b systems.

Fixes: 1676ecd303ac ("drm/i915: Compute CMRR and calculate vtotal")
Cc: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Cc: Suraj Kandpal <suraj.kandpal@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
---
 drivers/gpu/drm/i915/display/intel_vrr.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index 05f67dc9d98d..1e37383e14e7 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -149,7 +149,8 @@ cmrr_get_vtotal(struct intel_crtc_state *crtc_state, bool video_mode_required)
 
 	crtc_state->cmrr.cmrr_n =
 		desired_refresh_rate * adjusted_mode->crtc_htotal * multiplier_n;
-	vtotal = (adjusted_mode->crtc_clock * 1000 * multiplier_n) / crtc_state->cmrr.cmrr_n;
+	vtotal = DIV_ROUND_UP_ULL(adjusted_mode->crtc_clock * 1000 * multiplier_n,
+				  crtc_state->cmrr.cmrr_n);
 	adjusted_pixel_rate = adjusted_mode->crtc_clock * 1000 * multiplier_m;
 	crtc_state->cmrr.cmrr_m = do_div(adjusted_pixel_rate, crtc_state->cmrr.cmrr_n);
 
-- 
2.45.2


^ permalink raw reply related	[flat|nested] 11+ messages in thread

end of thread, other threads:[~2024-06-13  6:53 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz follow: Atom feed
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2024-06-12  6:29 [PATCH] drm/i915/display: Update vtotal math to address 32b build Mitul Golani
2024-06-12  6:36 ` ✓ CI.Patch_applied: success for drm/i915/display: Update vtotal math to address 32b build (rev2) Patchwork
2024-06-12  6:36 ` ✓ CI.checkpatch: " Patchwork
2024-06-12  6:37 ` ✓ CI.KUnit: " Patchwork
2024-06-12  6:48 ` ✓ CI.Build: " Patchwork
2024-06-12  6:51 ` ✓ CI.Hooks: " Patchwork
2024-06-12  6:52 ` ✗ CI.checksparse: warning " Patchwork
2024-06-12  7:20 ` ✓ CI.BAT: success " Patchwork
2024-06-12  8:50 ` ✗ CI.FULL: failure " Patchwork
2024-06-13  6:25 ` [PATCH] drm/i915/display: Update vtotal math to address 32b build Jani Nikula
2024-06-13  6:53   ` Golani, Mitulkumar Ajitkumar

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