From patchwork Tue Mar 1 16:11:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomi Valkeinen X-Patchwork-Id: 547426 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 0EADEC4332F for ; Tue, 1 Mar 2022 16:13:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236074AbiCAQNv (ORCPT ); Tue, 1 Mar 2022 11:13:51 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33744 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236075AbiCAQNu (ORCPT ); Tue, 1 Mar 2022 11:13:50 -0500 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 329A035DEE for ; Tue, 1 Mar 2022 08:13:09 -0800 (PST) Received: from deskari.lan (91-156-85-209.elisa-laajakaista.fi [91.156.85.209]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 0160A1C6D; Tue, 1 Mar 2022 17:12:48 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1646151169; bh=l0HlvnqRm6HTy6W1ABUu6EwPuABmqOZTgbkeGIpaV+4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vyUFmAYM2vJeVDQYMCG1L44sWSslLpPoOAhVQcNgiE2aNBahI+f53G5WekLBH1rbm DaY/o+UaV+glZoCf+UFAQYjycaTcNvjrMHEy7iw+0iWGDcVm1p9UVLGahnLu0A5K9k sS/S4BiXt+7DKoboI2sVzdUSjAybbGnyf1we3p9k= 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 , Pratyush Yadav Cc: Tomi Valkeinen Subject: [PATCH v11 34/36] media: v4l2-subdev: Add v4l2_subdev_state_xlate_streams() helper Date: Tue, 1 Mar 2022 18:11:54 +0200 Message-Id: <20220301161156.1119557-35-tomi.valkeinen@ideasonboard.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220301161156.1119557-1-tomi.valkeinen@ideasonboard.com> References: <20220301161156.1119557-1-tomi.valkeinen@ideasonboard.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Laurent Pinchart Add a helper function to translate streams between two pads of a subdev, using the subdev's internal routing table. Signed-off-by: Laurent Pinchart Signed-off-by: Tomi Valkeinen --- drivers/media/v4l2-core/v4l2-subdev.c | 25 +++++++++++++++++++++++++ include/media/v4l2-subdev.h | 23 +++++++++++++++++++++++ 2 files changed, 48 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index e30338a53088..6a9fc62dacbf 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -1529,6 +1529,31 @@ v4l2_subdev_state_get_opposite_stream_format(struct v4l2_subdev_state *state, } EXPORT_SYMBOL_GPL(v4l2_subdev_state_get_opposite_stream_format); +u64 v4l2_subdev_state_xlate_streams(const struct v4l2_subdev_state *state, + u32 pad0, u32 pad1, u64 *streams) +{ + const struct v4l2_subdev_krouting *routing = &state->routing; + struct v4l2_subdev_route *route; + u64 streams0 = 0; + u64 streams1 = 0; + + for_each_active_route(routing, route) { + if (route->sink_pad == pad0 && route->source_pad == pad1 && + (*streams & BIT(route->sink_stream))) { + streams0 |= BIT(route->sink_stream); + streams1 |= BIT(route->source_stream); + } + if (route->source_pad == pad0 && route->sink_pad == pad1 && + (*streams & BIT(route->source_stream))) { + streams0 |= BIT(route->source_stream); + streams1 |= BIT(route->sink_stream); + } + } + + *streams = streams0; + return streams1; +} + int v4l2_subdev_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *state, struct v4l2_subdev_format *format) { diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index 1eced0f47296..992debe116ac 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -1497,6 +1497,29 @@ struct v4l2_mbus_framefmt * v4l2_subdev_state_get_opposite_stream_format(struct v4l2_subdev_state *state, u32 pad, u32 stream); +/** + * v4l2_subdev_state_xlate_streams() - Translate streams from one pad to another + * + * @state: Subdevice state + * @pad0: The first pad + * @pad1: The second pad + * @streams: Streams bitmask on the first pad + * + * Streams on sink pads of a subdev are routed to source pads as expressed in + * the subdev state routing table. Stream numbers don't necessarily match on + * the sink and source side of a route. This function translates stream numbers + * on @pad0, expressed as a bitmask in @streams, to the corresponding streams + * on @pad1 using the routing table from the @state. It returns the stream mask + * on @pad1, and updates @streams with the streams that have been found in the + * routing table. + * + * @pad0 and @pad1 must be a sink and a source, in any order. + * + * Return: The bitmask of streams of @pad1 that are routed to @streams on @pad0. + */ +u64 v4l2_subdev_state_xlate_streams(const struct v4l2_subdev_state *state, + u32 pad0, u32 pad1, u64 *streams); + /** * v4l2_subdev_get_fmt() - Fill format based on state * @sd: subdevice