linux-kernel - [PATCH 0/3] media: rcar-vin: Generate FRAME

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Message-ID: <20250614141545.2860860-1-niklas.soderlund+renesas@ragnatech.se>
Date: Sat, 14 Jun 2025 16:15:42 +0200
From: Niklas Söderlund <niklas.soderlund+renesas@...natech.se>
To: Mauro Carvalho Chehab <mchehab@...nel.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	linux-media@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Niklas Söderlund <niklas.soderlund+renesas@...natech.se>
Subject: [PATCH 0/3] media: rcar-vin: Generate FRAME_SYNC events

Hi,

This series extend the VIN interrupt handling to be able to generate 
FRAME_SYNC events. Having these events in user-space is a great help to 
know when a sensor starts to expose a new frame.

Patch 1/3 and 2/3 prepays the existing interrupt infrastructure to 
support more then "frame captured" interrupts. While patch 3/3 enables 
and checks for VSYNC detection and generates the new event.

The feature is tested on Gen2, Gen3 and Gen4 and all devices correctly 
generate FRAME_SYNC events.

Niklas Söderlund (3):
  media: rcar-vin: Fold interrupt helpers into only callers
  media: rcar-vin: Check for correct capture interrupt event
  media: rcar-vin: Generate FRAME_SYNC events

 .../platform/renesas/rcar-vin/rcar-dma.c      | 54 ++++++++++---------
 .../platform/renesas/rcar-vin/rcar-v4l2.c     |  2 +
 2 files changed, 32 insertions(+), 24 deletions(-)

-- 
2.49.0