From patchwork Tue Mar 30 17:33:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pratyush Yadav X-Patchwork-Id: 12173349 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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, 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=unavailable 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 B52A8C433F2 for ; Tue, 30 Mar 2021 17:35:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9926C60235 for ; Tue, 30 Mar 2021 17:35:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232588AbhC3RfU (ORCPT ); Tue, 30 Mar 2021 13:35:20 -0400 Received: from fllv0016.ext.ti.com ([198.47.19.142]:59756 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232533AbhC3RfK (ORCPT ); Tue, 30 Mar 2021 13:35:10 -0400 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 12UHYqev057185; Tue, 30 Mar 2021 12:34:52 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1617125692; bh=lbeVUbvAR4oductXBEoruja1yT2y8SvkHXqgYIrrklE=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=dBY1eZOMB8xhObsTadyWKSE+0DooNzUM5h+IMYv0KkpsU8YIuPLEvFlKKGPnyKlMI GVn78U7Hnk5X9pTndkOkUwMMYbnjciJ04HUm8trsH9n2BHYvqBkskyyUP3F+XWQaLD j4klMYe8qQZVVJPx+OjqECI5ctEwE1grlwl6rwXE= Received: from DFLE114.ent.ti.com (dfle114.ent.ti.com [10.64.6.35]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 12UHYqPN032783 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 30 Mar 2021 12:34:52 -0500 Received: from DFLE100.ent.ti.com (10.64.6.21) by DFLE114.ent.ti.com (10.64.6.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Tue, 30 Mar 2021 12:34:52 -0500 Received: from lelv0326.itg.ti.com (10.180.67.84) by DFLE100.ent.ti.com (10.64.6.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2 via Frontend Transport; Tue, 30 Mar 2021 12:34:52 -0500 Received: from pratyush-OptiPlex-790.dhcp.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 12UHXmgq125244; Tue, 30 Mar 2021 12:34:46 -0500 From: Pratyush Yadav To: Mauro Carvalho Chehab , Rob Herring , Kishon Vijay Abraham I , Vinod Koul , Peter Ujfalusi , Maxime Ripard , Benoit Parrot , Hans Verkuil , Alexandre Courbot , Laurent Pinchart , Stanimir Varbanov , Helen Koike , Michael Tretter , Peter Chen , Chunfeng Yun , , , , , CC: Pratyush Yadav , Vignesh Raghavendra , Tomi Valkeinen Subject: [PATCH 09/16] media: cadence: csi2rx: Turn subdev power on before starting stream Date: Tue, 30 Mar 2021 23:03:41 +0530 Message-ID: <20210330173348.30135-10-p.yadav@ti.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210330173348.30135-1-p.yadav@ti.com> References: <20210330173348.30135-1-p.yadav@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The subdevice power needs to be turned on before the stream is started. Otherwise it might not be in the proper state to stream the data. Turn it off when stopping the stream. Signed-off-by: Pratyush Yadav --- drivers/media/platform/cadence/cdns-csi2rx.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/media/platform/cadence/cdns-csi2rx.c b/drivers/media/platform/cadence/cdns-csi2rx.c index 7d1ac51e0698..3385e1bc213e 100644 --- a/drivers/media/platform/cadence/cdns-csi2rx.c +++ b/drivers/media/platform/cadence/cdns-csi2rx.c @@ -256,6 +256,10 @@ static int csi2rx_start(struct csi2rx_priv *csi2rx) writel(reg, csi2rx->base + CSI2RX_STATIC_CFG_REG); + ret = v4l2_subdev_call(csi2rx->source_subdev, core, s_power, true); + if (ret && ret != -ENOIOCTLCMD) + goto err_disable_pclk; + ret = v4l2_subdev_call(csi2rx->source_subdev, video, s_stream, true); if (ret) goto err_disable_pclk; @@ -358,6 +362,10 @@ static void csi2rx_stop(struct csi2rx_priv *csi2rx) if (v4l2_subdev_call(csi2rx->source_subdev, video, s_stream, false)) dev_warn(csi2rx->dev, "Couldn't disable our subdev\n"); + ret = v4l2_subdev_call(csi2rx->source_subdev, core, s_power, false); + if (ret && ret != -ENOIOCTLCMD) + dev_warn(csi2rx->dev, "Couldn't power off subdev\n"); + if (csi2rx->dphy) { writel(0, csi2rx->base + CSI2RX_DPHY_LANE_CTRL_REG);