From patchwork Fri Apr 21 12:44:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomi Valkeinen X-Patchwork-Id: 676062 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 20023C77B75 for ; Fri, 21 Apr 2023 12:46:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231838AbjDUMql (ORCPT ); Fri, 21 Apr 2023 08:46:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50264 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232213AbjDUMqk (ORCPT ); Fri, 21 Apr 2023 08:46:40 -0400 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8DEA3272B for ; Fri, 21 Apr 2023 05:46:32 -0700 (PDT) Received: from desky.lan (91-154-35-171.elisa-laajakaista.fi [91.154.35.171]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id E833B5875; Fri, 21 Apr 2023 14:44:42 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1682081083; bh=1hsTZ8jXLI/xErsRWU0KzHVcxIgu8M6qAoifHSsNNLg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QTn377P9xsdUmnRvq56t5YOKami4tOwfxRviCd/kXxVTe4zAd7zpbfzIQC08EQ/hh yuTwmqYQ3wDk3obthh2gVWQTgtO9jsYTXry5ouWHU0CBlWZZl0TJQLD2JeeMKErXV0 +svpE6+KCmVNHA0goO+IIWEnTrC3yg4BkpckL5Po= From: Tomi Valkeinen To: linux-media@vger.kernel.org, sakari.ailus@linux.intel.com, Jacopo Mondi , Laurent Pinchart , niklas.soderlund+renesas@ragnatech.se, Mauro Carvalho Chehab , Hans Verkuil , satish.nagireddy@getcruise.com Cc: Tomi Valkeinen Subject: [PATCH v4 7/8] utils/common: Set V4L2_SUBDEV_CLIENT_CAP_STREAMS for subdevs Date: Fri, 21 Apr 2023 15:44:27 +0300 Message-Id: <20230421124428.393261-8-tomi.valkeinen@ideasonboard.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230421124428.393261-1-tomi.valkeinen@ideasonboard.com> References: <20230421124428.393261-1-tomi.valkeinen@ideasonboard.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Do two things: - Inform the kernel that we support streams with a call to VIDIOC_SUBDEV_S_CLIENT_CAP - Use the returns from VIDIOC_SUBDEV_S_CLIENT_CAP and VIDIOC_SUBDEV_QUERYCAP to decide if streams are supported, and return that via has_streams_support() method. Signed-off-by: Tomi Valkeinen Reviewed-by: Laurent Pinchart --- utils/common/cv4l-helpers.h | 1 + utils/common/v4l-helpers.h | 17 +++++++++++++++++ 2 files changed, 18 insertions(+) diff --git a/utils/common/cv4l-helpers.h b/utils/common/cv4l-helpers.h index 3cee372b..502df6ac 100644 --- a/utils/common/cv4l-helpers.h +++ b/utils/common/cv4l-helpers.h @@ -82,6 +82,7 @@ public: bool has_rw() const { return v4l_has_rw(this); } bool has_streaming() const { return v4l_has_streaming(this); } bool has_ext_pix_format() const { return v4l_has_ext_pix_format(this); } + bool has_streams_support() const { return subdev_supports_streams; } int querycap(v4l2_capability &cap, bool force = false) { diff --git a/utils/common/v4l-helpers.h b/utils/common/v4l-helpers.h index c09cd987..2dd7f061 100644 --- a/utils/common/v4l-helpers.h +++ b/utils/common/v4l-helpers.h @@ -39,6 +39,7 @@ struct v4l_fd { bool have_selection; bool is_subdev; bool is_media; + bool subdev_supports_streams; int (*open)(struct v4l_fd *f, const char *file, int oflag, ...); int (*close)(struct v4l_fd *f); @@ -507,6 +508,12 @@ static inline int v4l_open(struct v4l_fd *f, const char *devname, bool non_block static inline int v4l_subdev_s_fd(struct v4l_fd *f, int fd, const char *devname) { + struct v4l2_subdev_client_capability clientcap = {}; + struct v4l2_subdev_capability subdevcap = {}; + bool subdev_streams; + bool client_streams; + int ret; + if (f->fd >= 0) f->close(f); @@ -528,6 +535,16 @@ static inline int v4l_subdev_s_fd(struct v4l_fd *f, int fd, const char *devname) f->have_next_ctrl = false; f->have_selection = false; + ret = ioctl(f->fd, VIDIOC_SUBDEV_QUERYCAP, &subdevcap); + subdev_streams = !ret && (subdevcap.capabilities & V4L2_SUBDEV_CAP_STREAMS); + + clientcap.capabilities = V4L2_SUBDEV_CLIENT_CAP_STREAMS; + + ret = ioctl(f->fd, VIDIOC_SUBDEV_S_CLIENT_CAP, &clientcap); + client_streams = !ret && (clientcap.capabilities & V4L2_SUBDEV_CLIENT_CAP_STREAMS); + + f->subdev_supports_streams = subdev_streams && client_streams; + return f->fd; }