From patchwork Fri Sep 9 13:39:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 604928 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 A3C54ECAAA1 for ; Fri, 9 Sep 2022 13:40:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231193AbiIINkr (ORCPT ); Fri, 9 Sep 2022 09:40:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33798 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230272AbiIINkj (ORCPT ); Fri, 9 Sep 2022 09:40:39 -0400 Received: from relay5-d.mail.gandi.net (relay5-d.mail.gandi.net [217.70.183.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 30B148C462; Fri, 9 Sep 2022 06:40:30 -0700 (PDT) Received: (Authenticated sender: paul.kocialkowski@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id E01401C0003; Fri, 9 Sep 2022 13:40:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1662730829; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=NzDRiNxlngXMkep4VlkVbmP7SB6g960sXKbI90dfLZ4=; b=hGtcLJPqM6oYiVcr1WZyCzBbTYzH6GqgwUSJpWEVhLJj54xhH2+gf6jNPZ5lhKogjzqxMz M4+Rh08pagsRVtaGzmKC/MmFVBOJsrUmg+6wDlc3QXZi2YNnFAXmkeg0gLLSUtUkBY/Gdn vLppwZCqwWJVX6DEQlRuFeHgpNx0Ovtgyx2292NAtRRO+Ycnhx0PbuGo3WRuqd/9ea8Jhp nIIAaMYBdHhhu+zsg0JExUKGfajlOgZqeBWyvDCIIEhDmQ78fEiaEV8T6aiND8FR5WQnir AIgZ1j2wJXmSYCu+1FaZqbzyK/eeaGPkkQhnMDbZzubKyFg1tD7NbBtPWNgFpQ== From: Paul Kocialkowski To: linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org Cc: Paul Kocialkowski , Mauro Carvalho Chehab , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Hans Verkuil , Maxime Ripard , Thomas Petazzoni , Laurent Pinchart Subject: [PATCH 1/4] media: sun6i-mipi-csi2: Require both pads to be connected for streaming Date: Fri, 9 Sep 2022 15:39:51 +0200 Message-Id: <20220909133954.97010-2-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220909133954.97010-1-paul.kocialkowski@bootlin.com> References: <20220909133954.97010-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The bridge needs both its pads connected to be able to stream data. Enforcing this is useful to produce an error when no sensor is connected. Fixes: af54b4f4c17f ("media: sunxi: Add support for the A31 MIPI CSI-2 controller") Signed-off-by: Paul Kocialkowski --- .../media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c b/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c index 30d6c0c5161f..340380a5f66f 100644 --- a/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c +++ b/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c @@ -519,8 +519,10 @@ static int sun6i_mipi_csi2_bridge_setup(struct sun6i_mipi_csi2_device *csi2_dev) /* Media Pads */ - pads[SUN6I_MIPI_CSI2_PAD_SINK].flags = MEDIA_PAD_FL_SINK; - pads[SUN6I_MIPI_CSI2_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; + pads[SUN6I_MIPI_CSI2_PAD_SINK].flags = MEDIA_PAD_FL_SINK | + MEDIA_PAD_FL_MUST_CONNECT; + pads[SUN6I_MIPI_CSI2_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE | + MEDIA_PAD_FL_MUST_CONNECT; ret = media_entity_pads_init(&subdev->entity, SUN6I_MIPI_CSI2_PAD_COUNT, pads);