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	Tested on bcm2710 (Raspberry Pi 3B). Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
		
			
				
	
	
		
			29 lines
		
	
	
		
			1002 B
		
	
	
	
		
			Diff
		
	
	
	
	
	
			
		
		
	
	
			29 lines
		
	
	
		
			1002 B
		
	
	
	
		
			Diff
		
	
	
	
	
	
From 345bf435405d58243c39d64a19a130a4a51c7fac Mon Sep 17 00:00:00 2001
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From: Eric Anholt <eric@anholt.net>
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Date: Mon, 5 Feb 2018 18:53:18 +0000
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Subject: [PATCH] drm/vc4: Don't wait for vblank on fkms cursor
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 updates.
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We don't use the same async update path between fkms and normal kms,
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and the normal kms workaround ended up making us wait.  This became a
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larger problem in rpi-4.14.y, as the USB HID update rate throttling
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got (accidentally?) dropped.
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Signed-off-by: Eric Anholt <eric@anholt.net>
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---
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 drivers/gpu/drm/vc4/vc4_kms.c | 3 ++-
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 1 file changed, 2 insertions(+), 1 deletion(-)
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--- a/drivers/gpu/drm/vc4/vc4_kms.c
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+++ b/drivers/gpu/drm/vc4/vc4_kms.c
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@@ -240,7 +240,8 @@ static int vc4_atomic_commit(struct drm_
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 	 * drm_atomic_helper_setup_commit() from auto-completing
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 	 * commit->flip_done.
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 	 */
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-	state->legacy_cursor_update = false;
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+	if (!vc4->firmware_kms)
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+		state->legacy_cursor_update = false;
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 	ret = drm_atomic_helper_setup_commit(state, nonblock);
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 	if (ret)
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 		return ret;
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