From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8C9CF2ECEB4; Mon, 22 Sep 2025 12:04:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758542690; cv=none; b=XKaWffJ16iZhKnilhtgpqvyIlY8V0Gy010SZYZfxkiXQBv2STbvwo5AGUUoCJ4YttMRg50LivvVaD3GZfeVm63yBeI3+p82NdGichk2BbVM0l44VzwQ0tzhn3ovuq12xxkJjAQVh5MBswC9Tyu5JAt+K19Rwzv3gkZrZzbnqRtk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758542690; c=relaxed/simple; bh=qU+QjQymKYnTFSUuFlSNyXW3Ydm7nGMDl+jIWvD69eo=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=U49ksgrcA/EX9PIa8vymG5fdDGGHxWjws3uZ/kOUF8OtvV7WuCkgk7gM3Hubjlu0FgU58yYHMm0onqcuEa2vBJgHfh6sAfIy/ElGn6LDAGDcJMRGmTPUvYB9XkqxmfB4PGyFAlvrO2OoVjFNg8HfArUa8c05W9QmqBtcsuIlSNo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b=Wq9AYzeI; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="Wq9AYzeI" Received: from [192.168.88.20] (91-158-153-178.elisa-laajakaista.fi [91.158.153.178]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 987E2669; Mon, 22 Sep 2025 14:03:23 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1758542604; bh=qU+QjQymKYnTFSUuFlSNyXW3Ydm7nGMDl+jIWvD69eo=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=Wq9AYzeITQDYLvZqQUZNDJwdJHdptFCQJe2wEUGK9oTFz0zK5iLTe2Wk9MfNH1yfH qwxpPBz3QwRSwgiaXLt3T6L6WggOLhxTc6eJkFdrm43QkxmPWkGFzHKIOcAWPg84Zp 7oGV1ongNYY5nb+Rj414ylqF8IJ5tEcIzWR0+JkA= Message-ID: Date: Mon, 22 Sep 2025 15:04:43 +0300 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v7 05/16] media: ti: j721e-csi2rx: allocate DMA channel based on context index To: Rishikesh Donadkar , jai.luthra@linux.dev, laurent.pinchart@ideasonboard.com, mripard@kernel.org Cc: y-abhilashchandra@ti.com, devarsht@ti.com, s-jain1@ti.com, vigneshr@ti.com, mchehab@kernel.org, robh@kernel.org, krzk+dt@kernel.org, p.zabel@pengutronix.de, conor+dt@kernel.org, sakari.ailus@linux.intel.com, hverkuil-cisco@xs4all.nl, jai.luthra@ideasonboard.com, changhuang.liang@starfivetech.com, jack.zhu@starfivetech.com, sjoerd@collabora.com, hverkuil+cisco@kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org References: <20250911102832.1583440-1-r-donadkar@ti.com> <20250911102832.1583440-6-r-donadkar@ti.com> Content-Language: en-US From: Tomi Valkeinen Autocrypt: addr=tomi.valkeinen@ideasonboard.com; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 11/09/2025 13:28, Rishikesh Donadkar wrote: > 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 > 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 d4e6d6b5b2f7..99a721e46d54 100644 > --- a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c > +++ b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c > @@ -1039,9 +1039,11 @@ 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); > Reviewed-by: Tomi Valkeinen Tomi