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 32EB9CD342C for ; Wed, 6 May 2026 08:52:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Cc:To: In-Reply-To:References:Message-Id:Content-Transfer-Encoding:Content-Type: Subject:Date:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=7TeNWq3Z+t+OhqRO+5qtu9+iGutiISTPerWZzvjOdF8=; b=Qas+tl5i6cwJgqQTUHFaL56fJG /R/mmvi9jXz/kvlf5R+dv2zW8SKDRlXrzTZb009Quit+x6L4tJnXFGwBcuEdqTLWP3jwRvMUBXodB wlmHH7U4/sPQEkz5NsXJJG0Rgm6Vj/Yg0O033Sc8y4wsRD/J7Uu5CW43/50Dlbl9EpOslvH75ieIu 2wBjx8PXDg6a32zq0LufnDEgxH6XRu3Ov41+XTD8+jYgCapiEfCwwzh8odKho+LMMXoTHFSASmZ5l qhno/v4aKbi20nIbuNbdJvhLsbF9X8PMfzocYtwxu8DlLHuy0MKSTEAN08rFc8SbwYKuepE1U2VSb nlBOl0qQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wKXzS-00000000F5o-2oii; Wed, 06 May 2026 08:52:22 +0000 Received: from mail-norwayeastazlp170130007.outbound.protection.outlook.com ([2a01:111:f403:c20f::7] helo=OSPPR02CU001.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wKXzR-00000000F3E-2avT; Wed, 06 May 2026 08:52:21 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=nmuL79X90sQcDDx9TkC4btTxkp+lzSdDkGOrbgbCFIfVXlyfUIx394QQe7DTW8W4c+1yvLzIMTZUKZH0GmBD7EM0exRQY5+qbViFhGeBwiai3uN8dkvcU3Mr7zBH3OAOVUcOnSyHjyU7Fh2ExVws26vMqcNgqcwGCPAxvLTliniBRSzLR7fdiT3XimGkBGiNeUyWuMrmVvSByE1z2Ka2k/rs97D//c2mUngipaBK4oSf82QVLYzdU4+y9uURC9GNQke0ncjt7IFRXaoaSQzi6LaViYPRwA+7y151NJHHd5OW9zJOt8WqfoSLmhvzsG2K/1VPDjdXTWlJNQDx1FcSdQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=7TeNWq3Z+t+OhqRO+5qtu9+iGutiISTPerWZzvjOdF8=; b=U7eFmJlS4Dz192xZX2p5YsxXP3MSr84ORPCXd5izmifiseK/T44rle9R7bwjaQJ+kBkzGQ2Fhdq2fhJQ4PswuYQHAUMpzS2IWEc8pG08G7FLAYOZqG6U0SXHDa2WPH0/UijM6JYT9cwKH+eGsLIxjnT1hEBAdhUF6Agd39OLFUtaCEsEd2YlVwHEEKqwSdIsdRqjiE0xl3ABotqU5sG8BqnI6Skacfwz+bAtfhqbtGCTND7EdYcA6J95gzi8eo3IzFiergxUvrhFpUZ/srMw6Byk18n/alErulNOfXRwh9MN4VqWa37X4E1rU3EjsKplwRGhJpqRHGwmxi0GVpFAlQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oss.nxp.com; dmarc=pass action=none header.from=oss.nxp.com; dkim=pass header.d=oss.nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=NXP1.onmicrosoft.com; s=selector1-NXP1-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=7TeNWq3Z+t+OhqRO+5qtu9+iGutiISTPerWZzvjOdF8=; b=Y9sBOkvGXwKKkMTzNezXXiZkn0j0RvAOwKHKXpNYhrQaekmmz5t468WFaeVqn9i6/+2q5lAto1QuHYew2Bn9y1qfb+m6k5kWv0WcP1emJxS9y4Uv2yw0TnMS7CDrwCys09MLn7Ygq8xIC/K7LjyYUzIkFGWGD4iWs0sSDbzQT8DOLbI1zqP4GS1XqnfGafi6iLrQ1p9PgP6AAQwCyotYS81LGNGuECA5IKZUVcNMm6ipwoz7MO1kRHhEl12DN9/dyTTNmMusT8VqlxtowL2cbUrPYiyVpGoSKQWWRb28FmEm0KjRsYva/w16e0xtpYlF0szyYqcwzgjpSjKxDMhGJg== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=oss.nxp.com; Received: from AS8PR04MB9080.eurprd04.prod.outlook.com (2603:10a6:20b:447::16) by PA1PR04MB10443.eurprd04.prod.outlook.com (2603:10a6:102:450::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9870.25; Wed, 6 May 2026 08:52:17 +0000 Received: from AS8PR04MB9080.eurprd04.prod.outlook.com ([fe80::92c2:2e03:bf99:68eb]) by AS8PR04MB9080.eurprd04.prod.outlook.com ([fe80::92c2:2e03:bf99:68eb%6]) with mapi id 15.20.9891.008; Wed, 6 May 2026 08:52:17 +0000 From: Guoniu Zhou Date: Wed, 06 May 2026 16:54:03 +0800 Subject: [PATCH v3 4/7] media: synopsys: Add support for multiple streams Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260506-csi2_imx95-v3-4-953b6e1a80dd@oss.nxp.com> References: <20260506-csi2_imx95-v3-0-953b6e1a80dd@oss.nxp.com> In-Reply-To: <20260506-csi2_imx95-v3-0-953b6e1a80dd@oss.nxp.com> To: Michael Riesch , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , Laurent Pinchart , Frank Li , Sakari Ailus , Bryan O'Donoghue , Mehdi Djait , Hans Verkuil Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, Guoniu Zhou X-Mailer: b4 0.14.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1778057665; l=2908; i=guoniu.zhou@oss.nxp.com; s=20250815; h=from:subject:message-id; bh=Ac4dI1IhT+SkNe1AR3Dtik0ILr4E1k6RHymUVMlr5FM=; b=ajojcFdKjaJklgmQ5qBcqD/OwAjQQkSfXHaRX0n0CQAadJ84LmRmCqqi7y6C3CDZ+IuTMa0az t3o9nyAj9rYBmT0Y/q7s7I51wOTcWWbu9NwIlaKNF3MWNYIlsaKjTJK X-Developer-Key: i=guoniu.zhou@oss.nxp.com; a=ed25519; pk=MM+/XICg5S78/gs+f9wtGP6yIvkyjTdZwfaxXeu5rlo= X-ClientProxiedBy: SG2PR04CA0203.apcprd04.prod.outlook.com (2603:1096:4:187::22) To AS8PR04MB9080.eurprd04.prod.outlook.com (2603:10a6:20b:447::16) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AS8PR04MB9080:EE_|PA1PR04MB10443:EE_ X-MS-Office365-Filtering-Correlation-Id: c7ddd922-6e9d-4c22-8bed-08deab4cc676 X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-LD-Processed: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|52116014|19092799006|376014|7416014|18002099003|56012099003|22082099003|921020|38350700014; X-Microsoft-Antispam-Message-Info: 1+fxJjo2yu+U8xrGC3FgiDP1ZTuiIC+s7DCjZ/j5Ju/FM5mdkBmKA8ANmKJwd5IG/dVX2pCIwTK/sxLzWpBqYcFHSpjSvsTLyIT5pzbfml0RbFhZqi3KtMkiXTn8boi6IGjnjUO18gKUFh0QBtR3rNYMHD2p6/ixgSumIhHw4sYk7F3o8lxl9roYMcXHsGV4qbwIlNenvtkQxK5yc0BymbFSyKuC9xas20jwmpMI5o1RfmpU0X/Asah2rwJEXO+3EZzvJa8M0NREcfzprUClTJim86+NupVdht484CJHyMYzCVLFj44FS5pACNTRjGnr0vSDu5TVeNckU7Q4rzJ8aSdA8Kxes/pHjytEcLuIQef+Kx2TepWtUNMoApXAGIiYdmmLism768rqoU3etJ8vrdwzvVlCpTBlXz0mvbHmw2jz7m+YGUoawxm0DESh4LrAbKKjeRrDWjeNtnY9qebjY9HcR92zmyf1criachbDxNghDxV6kPGU0B2KWDR6/HsEaSyYn6/sQjH9zqwG9ZNJQZecebGKLu2mQBqikXFkjlqmcWtXfhy2wqTXPwVFFl1YSI4rx0KxKmlcoLor6e3+uhglzZDz71/Jhfsw/ed6HlL/rcm3GALfiOG7ZogOiM4EZml4AyVrZj5zoWVpEY4G54DpPnvJy//JCkgpqE1o9BhG0VUwAxvIQYEu6dOUDNr4FcMEIY3gonNDKWAQXMfsQXt364E8QmozfSssvQHeJ/RnRn5dkx20olN7QhmUH62KKw3ol5I/4WAaAPN1eBxDog== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AS8PR04MB9080.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(366016)(52116014)(19092799006)(376014)(7416014)(18002099003)(56012099003)(22082099003)(921020)(38350700014);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?Mml5RVh1OGFEcFRjT0JPTEhxa2dkWWlYTmh0UW5xanBVZmkwdGJOeVpabWpo?= =?utf-8?B?MFBibWlqTEtyZmtkQWV3aFJaRWFSSysvS3hwNkU3Y0Z3TSt3U3c2cklxWEhV?= =?utf-8?B?S2c2T0pMa2RzdlkvYXpmT01iV0xsaVk4RjlON2J0OC91RzY2TGZLbm1wZmtx?= =?utf-8?B?Vm1qbHBKTkFROEIybTFmZVhBUi94VFpzZWtndDhhV29GMmNhdW5yR1ZFaTJk?= =?utf-8?B?Q1NJUHY0d2Q2emtGRlk2UnB5Nm45NWFyVWRMV1VpRUNvaU5Xd0RmQlJUZ0RH?= =?utf-8?B?SjNhTlBCUnA0bU5jY3UrcDJvSDV2WkwwQjJnV1NkNHpFWHIreXpvUGdqNkZT?= =?utf-8?B?MUhZZnplTlNiU1VuYkRubVo5NFdmaEduRlA4SU5Va2xzY0F4UFc4RXdpekhu?= =?utf-8?B?dEJ3UnF2MjhZbnhDcklJYS9KOSttT3NtSXh4U1lGazYzc05iYjRzTG04N3g4?= =?utf-8?B?ZEhpdS9oU2FUNm1nUEdHLytpZURYYm5XdGFVb0huc0hZRnF4bGpkYUF6emNG?= =?utf-8?B?WVhhTnpPM1Y1cGxyZ1B5TlNTbTdRTWphbDY4YktKSjZjU2RaUi9Qdk1Cb2Jp?= =?utf-8?B?ZlRvdm1jMEhYbXBEQkllT3d5VTNLU2x4Z2Z4bHZjNW9nSlhxdjRHQVIyUkNR?= =?utf-8?B?cVlVK2llMkl2QmpHS3NSSEYyQlp3VE1hTFBWb2xSLzdvR2g0VnBFRThUcUxw?= =?utf-8?B?V3hGVXZGNlNwdDZlUmVLZlpWQ2FYR0k1TEJZdVM4WmE0ZUpxbmlyUmEvc2hV?= =?utf-8?B?STN0NmJvcVRnelBJb08vbkNsSXAxSkVKTVpyNHNrcXNsSThkMkV1T3c5VWNz?= =?utf-8?B?dkppdjFHNy9jNElQY0NyYkxCeEQxM0F4ZjFaWHNNSTU5eUNhdldVMjd6RU9W?= =?utf-8?B?eHVIUjRlSjlvc0tUb255cXByYW1QaDlQU01CTlYrdUg5NUJ0d0ZzYlZNTzlh?= =?utf-8?B?ZVZUTUxpSUNnYVVTMmVPRlZBQ0VmejdIMW8yQXpSVkdhL3E3SFRpQ2dyZVpk?= =?utf-8?B?K1VEbjIzS1hEVDZYUU9mNWZVWEZMMTFFbEN0VkEzcDhFS1daUS9zRHlDOWZD?= =?utf-8?B?ZXZNSmRjbmNyc0UvZXBWNjNEZ1VLMjltL0lnSmIvRkFqTVVmSGVQd1lXcTVB?= =?utf-8?B?RHpGM3p0NjlnT0xDY21CbXp1MDVsamlZM3ZOR2JVNXVEM25FYXhyVzcwUzVw?= =?utf-8?B?QmswRGxJTmpqNy9BdGpuZ2FFdlVzektjWDZwUzRtWnkvSCtDakUwS09nRkxv?= =?utf-8?B?VUkzN0xaV0ZQbUpnOGFJNTg0ODZzQm5yclBUYWp5Y2gxWUp6cDBCS0l1R3Fi?= =?utf-8?B?WVN6NDRKQmdYNHQ5U1pySnd4NGR1d1JvWHVzRnJWRHBFSVQrdWMveENVVlpH?= =?utf-8?B?dTFoQWRMNTE2Y2tLL1MrdElYNnBtbnhsd3lmN3JYR1lDSXFrNGhhRnpYb0RS?= =?utf-8?B?L3RzYlhQR3RsQndoanFQU25hbVBiMC9SQkRWdHN6OFVVNzhqM2VBOGlhZXUz?= =?utf-8?B?SDdtL00wbUF5YnQxSGtQZ2FaVmNScmFXTVdJenRVb1MwSkpsTGN2dkFxaS8r?= =?utf-8?B?U1IzaTFQcDVLR0h4RzN5TVo5WXlUa1lhQ2h2RnVJRFIzY0VpbHk4ckxSQi84?= =?utf-8?B?Z2VGNzVmZUVRMFcyVktPZmpjdUtqUDNuUEZSdGZwMnhaUlAyVXhFZHFBQVY2?= =?utf-8?B?NURJK1VsdXgybWltaDE2OVNvVDZvanpza2kxWlk1b1EwOFo3NFduWit6WlhX?= =?utf-8?B?SjFYZjlqK3gvbDVrRkJOV2xORnJ0aW5Tc3VOTSt4ZkxFMWRuYnhIYSs3Tisx?= =?utf-8?B?ZTBtRkM0SWhkQzBaZVBMNDhvSXBhWDhyV2EybTlxTkwrbm5DSnJLQlgxN0hD?= =?utf-8?B?REg5QVN2akg5Q084bVhnaVV4cDJSY1hFcHB6ajBJR3JYc08xdndNU0xJd2Q0?= =?utf-8?B?VEErZ1dFRjNNTlRZVFc0eVhuTjYzUU1QS3g4MkgvSVRXZVdxeWdzYTA2VG1B?= =?utf-8?B?c01RRjQ1Uy8vSDI0Q0x6aUtEaVBwM3FqRVA5dzYvSU1NRzNxbGg0MzY3dVNk?= =?utf-8?B?ajl0WldoaHBRUU1DdTBDZko5YVg3bm9WdWFWU1JpTG4wZ1ZVUDdROXlsK3lD?= =?utf-8?B?aUpjYjRPWkdZbW1pV3g1bExWZ0IxQmFOUHdtV05lNG5ZSGxiN1M4WUxuc3Ew?= =?utf-8?B?ajgvSFQrQWxVNlAxVlNFaWNlM2o4MU5XN3VmN3QvN3RDeTJEVThlSklnN1BK?= =?utf-8?B?SnkxTjFCb1FpMzhGT2EzYjJuMTd6WEtsY1ZIQVZsdFRuQUtMY0hBVW5iVGd4?= =?utf-8?B?NFRXUWtWUDNWdW1ZcjRQODZXazA0KzM4bTBabEU5TUZpd1RpT2RqZz09?= X-OriginatorOrg: oss.nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: c7ddd922-6e9d-4c22-8bed-08deab4cc676 X-MS-Exchange-CrossTenant-AuthSource: AS8PR04MB9080.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 May 2026 08:52:17.0054 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: mN6U5wDJTi1DZhoSbBOaAnWlp+/uPaJIl6HZhDtGgfF6Nvlb2WLIuMtaSUyn2tU4249i2O8ayN5mpSd0EzvbAQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PA1PR04MB10443 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260506_015221_670760_28BAFEAD X-CRM114-Status: GOOD ( 16.44 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The current driver only supports single stream operation. Add support for multiple concurrent streams by tracking enabled streams with a bitmask and only initializing the hardware once for the first stream. This enables use cases such as surround view systems where multiple camera streams need to be processed simultaneously through the same CSI-2 receiver interface. Reviewed-by: Frank Li Signed-off-by: Guoniu Zhou --- Changes in v3: - Call pm_runtime_put() after dw_mipi_csi2rx_stop() - Balance PM runtime get/put for asymmetric stream enable/disable operations Changes in v2: - Simplify error handling by keeping goto labels instead of early returns --- drivers/media/platform/synopsys/dw-mipi-csi2rx.c | 35 ++++++++++++++++-------- 1 file changed, 24 insertions(+), 11 deletions(-) diff --git a/drivers/media/platform/synopsys/dw-mipi-csi2rx.c b/drivers/media/platform/synopsys/dw-mipi-csi2rx.c index f45466ede2bb..92178a3dec5d 100644 --- a/drivers/media/platform/synopsys/dw-mipi-csi2rx.c +++ b/drivers/media/platform/synopsys/dw-mipi-csi2rx.c @@ -113,6 +113,7 @@ struct dw_mipi_csi2rx_device { enum v4l2_mbus_type bus_type; u32 lanes_num; + u64 enabled_streams; const struct dw_mipi_csi2rx_drvdata *drvdata; }; @@ -539,26 +540,33 @@ static int dw_mipi_csi2rx_enable_streams(struct v4l2_subdev *sd, DW_MIPI_CSI2RX_PAD_SRC, &streams_mask); - ret = pm_runtime_resume_and_get(dev); - if (ret) - goto err; + if (!csi2->enabled_streams) { + ret = pm_runtime_resume_and_get(dev); + if (ret) + goto err; - ret = dw_mipi_csi2rx_start(csi2); - if (ret) { - dev_err(dev, "failed to enable CSI hardware\n"); - goto err_pm_runtime_put; + ret = dw_mipi_csi2rx_start(csi2); + if (ret) { + dev_err(dev, "failed to enable CSI hardware\n"); + goto err_pm_runtime_put; + } } ret = v4l2_subdev_enable_streams(remote_sd, remote_pad->index, mask); if (ret) goto err_csi_stop; + csi2->enabled_streams |= streams_mask; + return 0; err_csi_stop: - dw_mipi_csi2rx_stop(csi2); + /* Stop CSI hardware if no streams are enabled */ + if (!csi2->enabled_streams) + dw_mipi_csi2rx_stop(csi2); err_pm_runtime_put: - pm_runtime_put(dev); + if (!csi2->enabled_streams) + pm_runtime_put(dev); err: return ret; } @@ -583,10 +591,15 @@ static int dw_mipi_csi2rx_disable_streams(struct v4l2_subdev *sd, &streams_mask); ret = v4l2_subdev_disable_streams(remote_sd, remote_pad->index, mask); + if (ret) + dev_err(dev, "failed to disable streams on remote subdev: %d\n", ret); - dw_mipi_csi2rx_stop(csi2); + csi2->enabled_streams &= ~streams_mask; - pm_runtime_put(dev); + if (!csi2->enabled_streams) { + dw_mipi_csi2rx_stop(csi2); + pm_runtime_put(dev); + } return ret; } -- 2.34.1