From patchwork Tue Apr 13 02:30:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 12199127 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=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 EB1A2C4361A for ; Tue, 13 Apr 2021 02:31:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D05F0613AE for ; Tue, 13 Apr 2021 02:31:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343665AbhDMCbm (ORCPT ); Mon, 12 Apr 2021 22:31:42 -0400 Received: from perceval.ideasonboard.com ([213.167.242.64]:35892 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343596AbhDMCbm (ORCPT ); Mon, 12 Apr 2021 22:31:42 -0400 Received: from pendragon.lan (62-78-145-57.bb.dnainternet.fi [62.78.145.57]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id A3FBB15B2; Tue, 13 Apr 2021 04:31:22 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1618281083; bh=PgOYE+Sm4LTnD+oWFcozR37wrqlHbA/JorymUcp7HIw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=C9TdM9tTdefBpgBqwCxJ6+BKovWiHKEIJ8zAMWHrIuUXI+BedsscT2VCQdPefChOU Vtv1YsKaqlKMv2/CsBag//vNBS6bKN1wMNE35clEBsqKKlwEVKVu8GPNt3Yiu3G3A3 fxioEl+BxFK5gMZJzjlO0/g6nHDfOvTh2JlTaDdw= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Rui Miguel Silva , kernel@pengutronix.de, Fabio Estevam , linux-imx@nxp.com, Steve Longerbeam , Philipp Zabel , Marek Vasut Subject: [PATCH 21/23] media: imx: imx7_mipi_csis: Reject invalid data-lanes settings Date: Tue, 13 Apr 2021 05:30:12 +0300 Message-Id: <20210413023014.28797-22-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.28.1 In-Reply-To: <20210413023014.28797-1-laurent.pinchart@ideasonboard.com> References: <20210413023014.28797-1-laurent.pinchart@ideasonboard.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The CSIS doesn't support data lanes reordering. Reject invalid settings. Signed-off-by: Laurent Pinchart --- drivers/staging/media/imx/imx7-mipi-csis.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/staging/media/imx/imx7-mipi-csis.c b/drivers/staging/media/imx/imx7-mipi-csis.c index 07b331667db7..6e235c86e0aa 100644 --- a/drivers/staging/media/imx/imx7-mipi-csis.c +++ b/drivers/staging/media/imx/imx7-mipi-csis.c @@ -1115,6 +1115,7 @@ static int mipi_csis_async_register(struct csi_state *state) }; struct v4l2_async_subdev *asd; struct fwnode_handle *ep; + unsigned int i; int ret; v4l2_async_notifier_init(&state->notifier); @@ -1128,6 +1129,14 @@ static int mipi_csis_async_register(struct csi_state *state) if (ret) goto err_parse; + for (i = 0; i < vep.bus.mipi_csi2.num_data_lanes; ++i) { + if (vep.bus.mipi_csi2.data_lanes[i] != i + 1) { + dev_err(state->dev, + "data lanes reordering is not supported"); + goto err_parse; + } + } + state->bus = vep.bus.mipi_csi2; dev_dbg(state->dev, "data lanes: %d\n", state->bus.num_data_lanes);