From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 88F0BC433F5 for ; Fri, 15 Apr 2022 16:02:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ti6dx/X3HVln8cCFDzO4pmPK6yu+HkroVWf9w+2eGm8=; b=RIaACdvKDKlBz0 v7ZwGI9aWQmxBiGnzGTON2Jw88I7vkmiyec8wJYU9zBYi/X/Njyw+udBY2f41XH5xbuWrX5G7VheP mx0KNFiPE1XY0v01rbk/IVCidGgODmA9+jHIkrqrnZwRRGhpQLvm83Q4xT4QGEy+1zhzkl71SbmK7 e5vhFbVayBtNp1Fe9nyu98SyCFabQ/+WtqLMVEZxM3VIUhjoZyovudtjDgzA9Pc/Ouxqa1hQeWmu2 DHyiLeawG3fpKQ5MbzDgsE72Kbse+ZA4b9KeE5e21p4xrC1JHZp5PL2Eu6UWs8F86Ib9pPnKjqB4T MvE/VLubkjQWU1KwHung==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nfOOD-00AlKx-6G; Fri, 15 Apr 2022 16:01:41 +0000 Received: from relay4-d.mail.gandi.net ([2001:4b98:dc4:8::224]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nfNsl-00AXi9-Na for linux-arm-kernel@lists.infradead.org; Fri, 15 Apr 2022 15:29:19 +0000 Received: (Authenticated sender: paul.kocialkowski@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id 1C01BE0009; Fri, 15 Apr 2022 15:29:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1650036550; 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=eJhdnVljXNxVEUMy4in6EAVIykPxuz30jn1QuT2PjaY=; b=Zk7yFys2c2BJ9az9iLbgPiy+++XOJFjJ9avanOahl/MwOs13EJRsry5ULsFMWtj0sFPkG3 +X9FEp5q09ETZvrFJaR9tm7kh+Y1fkNjfdkfnvTKYVhhiiCCf3crFCA4lKRbkm6AgjWLJJ zNhciEKHvb1qr1qr74A1QNf97sTEHc39Q9XglU1hC1MSyCLlxod8WbOEfC/trL/AcFIKBy ptrTgc9JWO+r8m3gkqwrpyHx7oAfaSmxcnPi3lsGi5Uxxbe73vy3Y/9aohqC9QsYgl8MFj bPE7bE3/gTQx/Z2QXDRgkCRFbkSl+Cwmvc4edQmgBg5wUzKvV6hcA4BPdjnSOQ== From: Paul Kocialkowski To: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev Cc: Yong Deng , Paul Kocialkowski , Mauro Carvalho Chehab , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Laurent Pinchart , Maxime Ripard , Thomas Petazzoni Subject: [PATCH v4 43/45] media: sun6i-csi: Detect the availability of the ISP Date: Fri, 15 Apr 2022 17:28:09 +0200 Message-Id: <20220415152811.636419-44-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.35.2 In-Reply-To: <20220415152811.636419-1-paul.kocialkowski@bootlin.com> References: <20220415152811.636419-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220415_082912_127347_BDCB67ED X-CRM114-Status: GOOD ( 17.64 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add a helper to detect whether the ISP is available and connected and store the indication in a driver-wide variable. Signed-off-by: Paul Kocialkowski --- .../platform/sunxi/sun6i-csi/sun6i_csi.c | 33 +++++++++++++++++++ .../platform/sunxi/sun6i-csi/sun6i_csi.h | 3 ++ 2 files changed, 36 insertions(+) diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c index a88deb8ba1e7..f185cbd113c7 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c @@ -25,6 +25,35 @@ #include "sun6i_csi_capture.h" #include "sun6i_csi_reg.h" +/* ISP */ + +static bool sun6i_csi_isp_detect(struct sun6i_csi_device *csi_dev) +{ + struct device *dev = csi_dev->dev; + struct fwnode_handle *handle = NULL; + + /* ISP is not available if disabled in kernel config. */ + if (!IS_ENABLED(CONFIG_VIDEO_SUN6I_ISP)) + return 0; + + /* + * ISP is not available if not connected via fwnode graph. + * This weill also check that the remote parent node is available. + */ + handle = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), + SUN6I_CSI_PORT_ISP, 0, + FWNODE_GRAPH_ENDPOINT_NEXT); + if (!handle) + return 0; + + fwnode_handle_put(handle); + + dev_info(dev, "ISP link is available\n"); + csi_dev->isp_available = true; + + return 0; +} + /* Media */ static const struct media_device_ops sun6i_csi_media_ops = { @@ -306,6 +335,10 @@ static int sun6i_csi_probe(struct platform_device *platform_dev) if (ret) return ret; + ret = sun6i_csi_isp_detect(csi_dev); + if (ret) + goto error_resources; + ret = sun6i_csi_v4l2_setup(csi_dev); if (ret) goto error_resources; diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h index 6aa83dd11684..9b105c341047 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h @@ -22,6 +22,7 @@ enum sun6i_csi_port { SUN6I_CSI_PORT_PARALLEL = 0, SUN6I_CSI_PORT_MIPI_CSI2 = 1, + SUN6I_CSI_PORT_ISP = 2, }; struct sun6i_csi_buffer { @@ -46,6 +47,8 @@ struct sun6i_csi_device { struct clk *clock_mod; struct clk *clock_ram; struct reset_control *reset; + + bool isp_available; }; struct sun6i_csi_variant { -- 2.35.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel