From patchwork Thu Jan 28 12:09:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 372927 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6B0B1C433DB for ; Thu, 28 Jan 2021 12:16:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 23FC464DCC for ; Thu, 28 Jan 2021 12:16:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231521AbhA1MQZ (ORCPT ); Thu, 28 Jan 2021 07:16:25 -0500 Received: from retiisi.eu ([95.216.213.190]:39670 "EHLO hillosipuli.retiisi.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229616AbhA1MQR (ORCPT ); Thu, 28 Jan 2021 07:16:17 -0500 Received: from lanttu.localdomain (lanttu-e.localdomain [192.168.1.64]) by hillosipuli.retiisi.eu (Postfix) with ESMTP id 07052634C89; Thu, 28 Jan 2021 14:12:38 +0200 (EET) From: Sakari Ailus To: linux-media@vger.kernel.org Cc: Hans Verkuil , kernel@collabora.com, Laurent Pinchart , Kieran Bingham , Jacopo Mondi , niklas.soderlund+renesas@ragnatech.se, Helen Koike , Dafna Hirschfeld , Hugues Fruchet , Nicolas Ferre , Yong Zhi , Sylwester Nawrocki , Maxime Ripard , Robert Foss , Philipp Zabel , Ezequiel Garcia Subject: [PATCH v4 00/14] V4L2 Async notifier API cleanup Date: Thu, 28 Jan 2021 14:09:31 +0200 Message-Id: <20210128120945.5062-1-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Hi all, I took Ezequiel's set (after discussing with him) and made changes on top of v2 based on the review comments. The goal of this series is to make the API more consistent, also fixing all the drivers which are currently misusing the API. With this change, the v4l2-async functions that add subdevices to a notifier have the same semantics, that is they all allocate a struct v4l2_async_subdev, and take a size argument for drivers to embed struct v4l2_async_subdev in a larger struct. This makes the struct v4l2_async_subdev allocation model more consistent, and simpler to understand. The V4L2 sub-devices documentation, as well as the kernel-doc are also improved a bit, clarifying the API. Finally, all the drivers previously using v4l2_async_notifier_add_subdev are converted to proper helpers, which allows us to rename v4l2_async_notifier_add_subdev to __v4l2_async_notifier_add_subdev, and clarify the documentation so hopefully future drivers will avoid it. I have tried to convert the drivers in the least invasive way, keeping the original code as much as possible. In many cases, specially the old drivers, there is some bitrot and some room for more cleanups, which is beyond the scope of this patchset. The series is now rebased on top of these patches: media: v4l2-async: Remove V4L2_ASYNC_MATCH_CUSTOM media: v4l2-async: Remove V4L2_ASYNC_MATCH_DEVNAME media: pxa_camera: Drop the v4l2-clk clock register media: imx6-mipi-csi2: Call remote subdev get_mbus_config to get active lanes Since v3: - Forgot to mention rebase on current linux-media master for v3, i.e. actually since v2. - Make the documentation patch last, and adjust it to cover Laurent's previously last patch of async API improvements. - Move async API changes to the right patch (from 11th -> 1st). - Assign ret in rkisp1_subdev_notifier. - Use negative error value in __v4l2_async_notifier_add_fwnode_remote_subdev. - Fix functions listed in v4l2_async_notifier_unregister and v4l2_async_notifier_register documentation, removing v4l2_async_register_subdev_sensor_common and adding v4l2_async_notifier_add_fwnode_remote_subdev. I hope this is fine now... - Fix async API usage and compilation in max9286, rkisp1 and st-mipid02 driver. Since v2: - Don't do useless assign of ret before returning in drivers/media/i2c/st-mipid02.c or drivers/media/platform/renesas-ceu.c. - Don't do of_node_put(NULL) in drivers/media/platform/exynos4-is/media-dev.c. - Fix comment in drivers/media/v4l2-core/v4l2-async.c. - List all current driver API functions used for working with async notifiers in v4l2_async_notifier_init() and v4l2_async_notifier_cleanup() kerneldoc documentation in include/media/v4l2-async.h. Changes from v1: * Add Laurent's follow cleanup, which makes the API safer. * Fix commit description s/is discouraged/will be discouraged * Fix missing allocation in renesas-ceu driver. * Fix missing of_node puts in exynos4-is driver. * Rework mention of v4l2_fwnode_reference_parse_sensor_common Ezequiel Garcia (13): media: v4l2-async: Clean v4l2_async_notifier_add_fwnode_remote_subdev media: atmel: Use v4l2_async_notifier_add_fwnode_remote_subdev media: stm32: Use v4l2_async_notifier_add_fwnode_remote_subdev media: exynos4-is: Use v4l2_async_notifier_add_fwnode_remote_subdev media: st-mipid02: Use v4l2_async_notifier_add_fwnode_remote_subdev media: cadence: Use v4l2_async_notifier_add_fwnode_remote_subdev media: marvell-ccic: Use v4l2_async_notifier_add_*_subdev media: renesas-ceu: Use v4l2_async_notifier_add_*_subdev media: pxa-camera: Use v4l2_async_notifier_add_*_subdev media: davinci: vpif_display: Remove unused v4l2-async code media: v4l2-async: Fix incorrect comment media: v4l2-async: Discourage use of v4l2_async_notifier_add_subdev media: Clarify v4l2-async subdevice addition API Laurent Pinchart (1): media: v4l2-async: Improve v4l2_async_notifier_add_*_subdev() API .../driver-api/media/v4l2-subdev.rst | 41 +++++++-- drivers/media/i2c/max9286.c | 14 +-- drivers/media/i2c/st-mipid02.c | 21 +++-- drivers/media/pci/intel/ipu3/ipu3-cio2-main.c | 15 ++-- drivers/media/platform/am437x/am437x-vpfe.c | 2 +- drivers/media/platform/atmel/atmel-isc.h | 1 + drivers/media/platform/atmel/atmel-isi.c | 46 +++------- .../media/platform/atmel/atmel-sama5d2-isc.c | 44 ++++------ drivers/media/platform/cadence/cdns-csi2rx.c | 17 ++-- drivers/media/platform/davinci/vpif_capture.c | 2 +- drivers/media/platform/davinci/vpif_display.c | 86 ++++-------------- drivers/media/platform/davinci/vpif_display.h | 1 - drivers/media/platform/exynos4-is/media-dev.c | 25 +++--- drivers/media/platform/exynos4-is/media-dev.h | 2 +- .../media/platform/marvell-ccic/cafe-driver.c | 14 ++- .../media/platform/marvell-ccic/mcam-core.c | 10 --- .../media/platform/marvell-ccic/mcam-core.h | 1 - .../media/platform/marvell-ccic/mmp-driver.c | 11 ++- drivers/media/platform/omap3isp/isp.c | 74 ++++++---------- drivers/media/platform/pxa_camera.c | 53 +++++------ drivers/media/platform/qcom/camss/camss.c | 11 +-- drivers/media/platform/rcar-vin/rcar-core.c | 5 +- drivers/media/platform/rcar-vin/rcar-csi2.c | 2 +- drivers/media/platform/rcar_drif.c | 2 +- drivers/media/platform/renesas-ceu.c | 56 +++++------- .../platform/rockchip/rkisp1/rkisp1-dev.c | 15 ++-- drivers/media/platform/stm32/stm32-dcmi.c | 87 +++++++------------ .../platform/sunxi/sun4i-csi/sun4i_csi.c | 9 +- .../platform/sunxi/sun4i-csi/sun4i_csi.h | 1 - drivers/media/platform/ti-vpe/cal.c | 12 ++- drivers/media/platform/video-mux.c | 14 +-- drivers/media/platform/xilinx/xilinx-vipp.c | 10 +-- drivers/media/v4l2-core/v4l2-async.c | 54 ++++++------ drivers/media/v4l2-core/v4l2-fwnode.c | 6 +- drivers/staging/media/imx/imx-media-csi.c | 14 +-- drivers/staging/media/imx/imx-media-of.c | 2 +- drivers/staging/media/imx/imx6-mipi-csi2.c | 19 ++-- drivers/staging/media/imx/imx7-media-csi.c | 16 ++-- drivers/staging/media/imx/imx7-mipi-csis.c | 15 +--- drivers/staging/media/tegra-video/vi.c | 10 +-- include/media/davinci/vpif_types.h | 2 - include/media/v4l2-async.h | 64 +++++++++----- 42 files changed, 380 insertions(+), 526 deletions(-)