[0/3] v4l2-dev/ioctl: Add V4L2_CAP_IO_MC
Message ID | 20191015143552.317669-1-niklas.soderlund+renesas@ragnatech.se (mailing list archive) |
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Received: from vger.kernel.org ([209.132.180.67]) by www.linuxtv.org with esmtp (Exim 4.84_2) (envelope-from <linux-media-owner@vger.kernel.org>) id 1iKNwh-0005SV-L7; Tue, 15 Oct 2019 14:37:07 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732807AbfJOOhF (ORCPT <rfc822;mkrufky@linuxtv.org> + 1 other); Tue, 15 Oct 2019 10:37:05 -0400 Received: from vsp-unauthed02.binero.net ([195.74.38.227]:7645 "EHLO vsp-unauthed02.binero.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732712AbfJOOhA (ORCPT <rfc822;linux-media@vger.kernel.org>); Tue, 15 Oct 2019 10:37:00 -0400 X-Halon-ID: ffc6f0d1-ef58-11e9-837a-0050569116f7 Authorized-sender: niklas@soderlund.pp.se Received: from bismarck.berto.se (unknown [84.172.88.101]) by bin-vsp-out-03.atm.binero.net (Halon) with ESMTPA id ffc6f0d1-ef58-11e9-837a-0050569116f7; Tue, 15 Oct 2019 16:35:36 +0200 (CEST) From: =?utf-8?q?Niklas_S=C3=B6derlund?= <niklas.soderlund+renesas@ragnatech.se> To: Helen Koike <helen.koike@collabora.com>, Hans Verkuil <hverkuil@xs4all.nl>, Sakari Ailus <sakari.ailus@linux.intel.com>, Laurent Pinchart <laurent.pinchart@ideasonboard.com>, linux-media@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= <niklas.soderlund+renesas@ragnatech.se> Subject: [PATCH 0/3] v4l2-dev/ioctl: Add V4L2_CAP_IO_MC Date: Tue, 15 Oct 2019 16:35:49 +0200 Message-Id: <20191015143552.317669-1-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: <linux-media.vger.kernel.org> X-Mailing-List: linux-media@vger.kernel.org |
Message
Niklas Söderlund
Oct. 15, 2019, 2:35 p.m. UTC
Hi, First of this series is based on work done by Helen in 2017 [1], I have synced with her that it's OK for me to takeover the work. This series aims to reduce the amount of boiler plate code in video device drivers who's inputs and/or outputs are controlled by the Media Controller instead of the V4L2 API. Patch 1/3 adds the core parts of this change by adding a new video device capability flag V4L2_CAP_IO_MC which if set provides helper implementations for the get, set and enum inputs and outputs ioctrls freeing the video device driver from the need to implement them. Patch 2/3 and 3/3 converts the R-Car VIN and Intel IPU3 drivers to use this new flag and delete the now redundant boiler plate code. I'm sure more video device drivers can make use of this new flag but as I can only test on these two platforms I have limited my changes to those. 1. https://patchwork.linuxtv.org/patch/41857/ Niklas Söderlund (3): v4l2-dev/ioctl: Add V4L2_CAP_IO_MC rcar-vin: Make use of V4L2_CAP_IO_MC staging/intel-ipu3: Make use of V4L2_CAP_IO_MC .../media/uapi/v4l/vidioc-querycap.rst | 3 + .../media/videodev2.h.rst.exceptions | 1 + drivers/media/platform/rcar-vin/rcar-v4l2.c | 17 +--- drivers/media/v4l2-core/v4l2-dev.c | 24 +++-- drivers/media/v4l2-core/v4l2-ioctl.c | 87 ++++++++++++++++++- drivers/staging/media/ipu3/ipu3-v4l2.c | 60 +------------ include/uapi/linux/videodev2.h | 2 + 7 files changed, 110 insertions(+), 84 deletions(-)