From patchwork Wed Mar 16 15:46:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 12782896 X-Patchwork-Delegate: kieran@bingham.xyz 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 D6F74C4332F for ; Wed, 16 Mar 2022 15:47:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1355833AbiCPPsV (ORCPT ); Wed, 16 Mar 2022 11:48:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54158 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357350AbiCPPsV (ORCPT ); Wed, 16 Mar 2022 11:48:21 -0400 Received: from relay10.mail.gandi.net (relay10.mail.gandi.net [IPv6:2001:4b98:dc4:8::230]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A799E6D3A5; Wed, 16 Mar 2022 08:47:04 -0700 (PDT) Received: (Authenticated sender: jacopo@jmondi.org) by mail.gandi.net (Postfix) with ESMTPSA id CBD97240011; Wed, 16 Mar 2022 15:47:01 +0000 (UTC) From: Jacopo Mondi To: niklas.soderlund@ragnatech.se, laurent.pinchart@ideasonboard.com Cc: Jacopo Mondi , tomi.valkeinen@ideasonboard.com, linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org Subject: [PATCH v2 05/10] media: adv748x: Implement set_routing Date: Wed, 16 Mar 2022 16:46:36 +0100 Message-Id: <20220316154641.511667-6-jacopo+renesas@jmondi.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220316154641.511667-1-jacopo+renesas@jmondi.org> References: <20220316154641.511667-1-jacopo+renesas@jmondi.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org Add the set_routing() subdev operation to allow userspace to configure the CSI-2 virtual channel. Signed-off-by: Jacopo Mondi --- drivers/media/i2c/adv748x/adv748x-csi2.c | 66 ++++++++++++++++++++++++ 1 file changed, 66 insertions(+) diff --git a/drivers/media/i2c/adv748x/adv748x-csi2.c b/drivers/media/i2c/adv748x/adv748x-csi2.c index 91cd70739e9d..af1c2469900c 100644 --- a/drivers/media/i2c/adv748x/adv748x-csi2.c +++ b/drivers/media/i2c/adv748x/adv748x-csi2.c @@ -314,12 +314,78 @@ static int adv748x_csi2_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad, return ret; } +static int adv748x_csi2_routing_validate(struct adv748x_csi2 *tx, + struct v4l2_subdev_krouting *routing) +{ + struct v4l2_subdev_route *route; + + if (routing->num_routes != 1) { + dev_err(tx->state->dev, "Unsupported number of routes %u", + routing->num_routes); + return -EINVAL; + } + + route = &routing->routes[0]; + + if (route->sink_pad != ADV748X_CSI2_SINK || + route->source_pad != ADV748X_CSI2_SOURCE) { + dev_err(tx->state->dev, + "Routes should go from the sink to the source pads.\n"); + return -EINVAL; + } + + if (route->source_stream > 4) { + dev_err(tx->state->dev, "Unsupported source stream %u\n", + route->source_stream); + return -EINVAL; + } + + if (route->sink_stream != 0) { + dev_err(tx->state->dev, "Unsupported sink stream %u\n", + route->sink_stream); + return -EINVAL; + } + + return 0; +} + +static int adv748x_csi2_set_vc_with_routing(struct adv748x_csi2 *tx, + struct v4l2_subdev_krouting *routing) +{ + struct v4l2_subdev_route *route = &routing->routes[0]; + + return adv748x_csi2_set_virtual_channel(tx, route->source_stream); +} + +static int adv748x_csi2_set_routing(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state, + enum v4l2_subdev_format_whence which, + struct v4l2_subdev_krouting *routing) +{ + struct adv748x_csi2 *tx = adv748x_sd_to_csi2(sd); + int ret; + + ret = adv748x_csi2_routing_validate(tx, routing); + if (ret) + return ret; + + ret = v4l2_subdev_set_routing(sd, state, routing); + if (ret) + return ret; + + if (which == V4L2_SUBDEV_FORMAT_TRY) + return 0; + + return adv748x_csi2_set_vc_with_routing(tx, routing); +} + static const struct v4l2_subdev_pad_ops adv748x_csi2_pad_ops = { .init_cfg = adv748x_csi2_init_cfg, .get_fmt = v4l2_subdev_get_fmt, .set_fmt = adv748x_csi2_set_format, .get_mbus_config = adv748x_csi2_get_mbus_config, .get_frame_desc = adv748x_csi2_get_frame_desc, + .set_routing = adv748x_csi2_set_routing, }; /* -----------------------------------------------------------------------------