linux-kernel - [PATCH RFC 4/4] drm/mipi-dsi: Drop MIPI_DSI_MODE_VSYNC

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Message-Id: <20250527-dsi-vsync-flush-v1-4-9b4ea4578729@pengutronix.de>
Date: Tue, 27 May 2025 16:14:34 +0200
From: Philipp Zabel <p.zabel@...gutronix.de>
To: Inki Dae <inki.dae@...sung.com>, 
 Jagan Teki <jagan@...rulasolutions.com>, 
 Marek Szyprowski <m.szyprowski@...sung.com>, 
 Andrzej Hajda <andrzej.hajda@...el.com>, 
 Neil Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>, 
 Laurent Pinchart <Laurent.pinchart@...asonboard.com>, 
 Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Artur Weber <aweber.kernel@...il.com>, 
 Jessica Zhang <quic_jesszhan@...cinc.com>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 kernel@...gutronix.de, Philipp Zabel <p.zabel@...gutronix.de>
Subject: [PATCH RFC 4/4] drm/mipi-dsi: Drop MIPI_DSI_MODE_VSYNC_FLUSH flag

Drop the unused MIPI_DSI_MODE_VSYNC_FLUSH flag. Whether or not a display
FIFO flush on vsync is required to avoid sending garbage to the panel is
not a property of the DSI link, but of the integration between display
controller and DSI host bridge.

Signed-off-by: Philipp Zabel <p.zabel@...gutronix.de>
---
 include/drm/drm_mipi_dsi.h | 2 --
 1 file changed, 2 deletions(-)

diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
index b37860f4a895c25ef8ba1c5b3f44827ef53aa100..369b0d8830c3d14a4fc1e8e38d5fa55f04ca143e 100644
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -130,8 +130,6 @@ struct mipi_dsi_host *of_find_mipi_dsi_host_by_node(struct device_node *node);
 #define MIPI_DSI_MODE_VIDEO_NO_HBP	BIT(6)
 /* disable hsync-active area */
 #define MIPI_DSI_MODE_VIDEO_NO_HSA	BIT(7)
-/* flush display FIFO on vsync pulse */
-#define MIPI_DSI_MODE_VSYNC_FLUSH	BIT(8)
 /* disable EoT packets in HS mode */
 #define MIPI_DSI_MODE_NO_EOT_PACKET	BIT(9)
 /* device supports non-continuous clock behavior (DSI spec 5.6.1) */

-- 
2.39.5