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Wed, 20 May 2026 07:01:05 -0500 Received: from ws.dhcp.ti.com (ws.dhcp.ti.com [172.24.233.149]) by lelvem-mr05.itg.ti.com (8.18.1/8.18.1) with ESMTP id 64KC0N3U1914726; Wed, 20 May 2026 07:00:59 -0500 From: Rishikesh Donadkar To: , , CC: , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v13 05/17] media: ti: j721e-csi2rx: allocate DMA channel based on context index Date: Wed, 20 May 2026 17:30:10 +0530 Message-ID: <20260520120022.539913-6-r-donadkar@ti.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260520120022.539913-1-r-donadkar@ti.com> References: <20260520120022.539913-1-r-donadkar@ti.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A0FE:EE_|DS7PR10MB4909:EE_ X-MS-Office365-Filtering-Correlation-Id: feecb2e4-0f29-44ad-78a5-08deb667796a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|36860700016|82310400026|1800799024|22082099003|18002099003|56012099003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: ANp04fVAfSjbLM+sNnxakT2JpVE77wyYbtqsdOmIcycrEDI6LI+ehe2Iboyw1HA0wnq01FV3lCwJVKS6jhCaRrWGFdDqqrdy82prq2hxdQ/pL/bnepAaBbyTcsmAlEuII6Enb1+0dmwix7SDZqIWbrDa47pzv8tDinsBRjim5RIKsv2NAHzJ6zMChWRbSbOdHlvga+XQ8e8ZDLt3VVCDgHtsn6P3/CLNb0KPmPyQaaF1i5/iN+DKuXgZPRcC5NQUBqQE6N65tDygPUDJXV9khZhVJykp8UUhhnRFIj9kxesFboPy71oSSeTW9Zhv0yWIXP77B7swGH8G2hipCm7lG/THv2M63aihRZG4t0GdFOlH+qBj4ou+Ce4vd06quYtSBN3J538FvhLYrbA6+1Cs51SlYBPv8ie8j5E4dvFYXeyWqAS4cbcXkNrVBwV/5rx7 X-OriginatorOrg: ti.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 May 2026 12:01:06.6809 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: feecb2e4-0f29-44ad-78a5-08deb667796a X-MS-Exchange-CrossTenant-Id: e5b49634-450b-4709-8abb-1e2b19b982b7 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=e5b49634-450b-4709-8abb-1e2b19b982b7;Ip=[198.47.23.195];Helo=[lewvzet201.ext.ti.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A0FE.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR10MB4909 From: Pratyush Yadav With multiple contexts, there needs to be a different DMA channel for each context. Earlier, the DMA channel name was hard coded to "rx0" for the sake of simplicity. Generate the DMA channel name based on its index and get the channel corresponding to the context. Signed-off-by: Pratyush Yadav Signed-off-by: Jai Luthra Reviewed-by: Jacopo Mondi Reviewed-by: Laurent Pinchart Reviewed-by: Yemike Abhilash Chandra Reviewed-by: Tomi Valkeinen Signed-off-by: Rishikesh Donadkar --- drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c index 4adfae425f19..c781b312cea8 100644 --- a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c +++ b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c @@ -1036,9 +1036,11 @@ static int ti_csi2rx_init_dma(struct ti_csi2rx_ctx *ctx) struct dma_slave_config cfg = { .src_addr_width = DMA_SLAVE_BUSWIDTH_16_BYTES, }; + char name[5]; int ret; - ctx->dma.chan = dma_request_chan(ctx->csi->dev, "rx0"); + snprintf(name, sizeof(name), "rx%u", ctx->idx); + ctx->dma.chan = dma_request_chan(ctx->csi->dev, name); if (IS_ERR(ctx->dma.chan)) return PTR_ERR(ctx->dma.chan); -- 2.34.1