From patchwork Tue Apr 23 12:33:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amelie Delaunay X-Patchwork-Id: 13639989 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 323D9C4345F for ; Tue, 23 Apr 2024 12:37:02 +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=BIXZAL0QMjhC7YWDXyt00QF8wOxrpmftTJlPY5AGKQ0=; b=OsN6t7BzGWSMJJ IYqFYjXz7kRcwYh1Tlaj2Fb42Ul7pglB2R//EmMOEyv+wBNAtf/d6aKihj9F6MMQ4C6h4UwO9RqJX gQ+A5zA3SMkXoMwMMVJ2rEw7mGdpZ/I2mYqP5a7Kyrl+HAcobc6jLE0EzcTxYiurHej03/oy5vHih Tdvc9vMvVR6XZ4llrpRROseD90vYWxDEt0CpiORW4+k6bTxipurjv+IGHsYOI1oemXmRJljZv4NOh 3k1vvKA5BDEOM38wA5RLtvVKOiPMxQmXL6eJTRzIrOyZGKc8IyTyuYczdHADHynb9WL3cN3ivN40t bOYhIwcwTFpsz5+s/FGA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rzFOF-0000000HQ1O-0cvv; Tue, 23 Apr 2024 12:36:51 +0000 Received: from mx07-00178001.pphosted.com ([185.132.182.106]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rzFNu-0000000HPoH-1L3t for linux-arm-kernel@lists.infradead.org; Tue, 23 Apr 2024 12:36:33 +0000 Received: from pps.filterd (m0288072.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 43NCZWmm004567; Tue, 23 Apr 2024 14:36:22 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= selector1; bh=IOYWpx+7FTJlYFtMjUGlHKbBuJPgpevIoZcXKDKHnVE=; b=D6 pzTGWnLf0s08uSL6JGSu6xikkz1epDxEEJ/LnCFpIl9xcBVwn764+59bOld5VEA7 a4yFRSA6uXIoD2tOJWeys9F10zz+ZdqOn5Gp2S8LgUkThA1zJVHmTv09wK3lM4Ff eaq6lriMAK+7fljf3tkPuGyUzU+HzMszSfc4S0IpzL1+B8mqVoDmFhyWgx1O8MGM hLibMtOMODf0RcoVYNXRHMc6HHuEOF6Lt2pc48Fq7eDZHAjbn7F52MMLMsu2ULME WDbCxbOUqvcwuntqaRgfyzXEsX2hStV15pj3m8uOY2+oShlPqnpFNHNinl/Zmr31 AoInkhPwP5F1gCRWbmXw== Received: from beta.dmz-ap.st.com (beta.dmz-ap.st.com [138.198.100.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3xm4cnbvn3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 23 Apr 2024 14:36:21 +0200 (MEST) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id 74BA140048; Tue, 23 Apr 2024 14:36:16 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node3.st.com [10.75.129.71]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id A1459217B6B; Tue, 23 Apr 2024 14:35:31 +0200 (CEST) Received: from localhost (10.48.86.143) by SHFDAG1NODE3.st.com (10.75.129.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Tue, 23 Apr 2024 14:35:31 +0200 From: Amelie Delaunay To: Vinod Koul , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue CC: , , , , , , Amelie Delaunay Subject: [PATCH 10/12] dmaengine: add channel device name to channel registration Date: Tue, 23 Apr 2024 14:33:00 +0200 Message-ID: <20240423123302.1550592-11-amelie.delaunay@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240423123302.1550592-1-amelie.delaunay@foss.st.com> References: <20240423123302.1550592-1-amelie.delaunay@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.48.86.143] X-ClientProxiedBy: SHFCAS1NODE1.st.com (10.75.129.72) To SHFDAG1NODE3.st.com (10.75.129.71) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-04-23_11,2024-04-23_01,2023-05-22_02 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240423_053630_762740_C88CC3FD X-CRM114-Status: GOOD ( 13.94 ) 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 Channel device name is used for sysfs, but also by dmatest filter function. With dynamic channel registration, channels can be registered after dma controller registration. Users may want to have specific channel names. If name is NULL, the channel name relies on previous implementation, dmachan. Signed-off-by: Amelie Delaunay --- drivers/dma/dmaengine.c | 16 ++++++++++------ drivers/dma/idxd/dma.c | 2 +- include/linux/dmaengine.h | 3 ++- 3 files changed, 13 insertions(+), 8 deletions(-) diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c index 491b22240221..c380a4dda77a 100644 --- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -1037,7 +1037,8 @@ static int get_dma_id(struct dma_device *device) } static int __dma_async_device_channel_register(struct dma_device *device, - struct dma_chan *chan) + struct dma_chan *chan, + const char *name) { int rc; @@ -1066,8 +1067,10 @@ static int __dma_async_device_channel_register(struct dma_device *device, chan->dev->device.parent = device->dev; chan->dev->chan = chan; chan->dev->dev_id = device->dev_id; - dev_set_name(&chan->dev->device, "dma%dchan%d", - device->dev_id, chan->chan_id); + if (!name) + dev_set_name(&chan->dev->device, "dma%dchan%d", device->dev_id, chan->chan_id); + else + dev_set_name(&chan->dev->device, name); rc = device_register(&chan->dev->device); if (rc) goto err_out_ida; @@ -1087,11 +1090,12 @@ static int __dma_async_device_channel_register(struct dma_device *device, } int dma_async_device_channel_register(struct dma_device *device, - struct dma_chan *chan) + struct dma_chan *chan, + const char *name) { int rc; - rc = __dma_async_device_channel_register(device, chan); + rc = __dma_async_device_channel_register(device, chan, name); if (rc < 0) return rc; @@ -1203,7 +1207,7 @@ int dma_async_device_register(struct dma_device *device) /* represent channels in sysfs. Probably want devs too */ list_for_each_entry(chan, &device->channels, device_node) { - rc = __dma_async_device_channel_register(device, chan); + rc = __dma_async_device_channel_register(device, chan, NULL); if (rc < 0) goto err_out; } diff --git a/drivers/dma/idxd/dma.c b/drivers/dma/idxd/dma.c index cd835eabd31b..dbecd699237e 100644 --- a/drivers/dma/idxd/dma.c +++ b/drivers/dma/idxd/dma.c @@ -269,7 +269,7 @@ static int idxd_register_dma_channel(struct idxd_wq *wq) desc->txd.tx_submit = idxd_dma_tx_submit; } - rc = dma_async_device_channel_register(dma, chan); + rc = dma_async_device_channel_register(dma, chan, NULL); if (rc < 0) { kfree(idxd_chan); return rc; diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 752dbde4cec1..73537fddbb52 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -1575,7 +1575,8 @@ int dma_async_device_register(struct dma_device *device); int dmaenginem_async_device_register(struct dma_device *device); void dma_async_device_unregister(struct dma_device *device); int dma_async_device_channel_register(struct dma_device *device, - struct dma_chan *chan); + struct dma_chan *chan, + const char *name); void dma_async_device_channel_unregister(struct dma_device *device, struct dma_chan *chan); void dma_run_dependencies(struct dma_async_tx_descriptor *tx);