From patchwork Thu Jul 29 07:18:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Juergen Borleis X-Patchwork-Id: 12407871 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 816B3C4338F for ; Thu, 29 Jul 2021 07:20:19 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 3401561054 for ; Thu, 29 Jul 2021 07:20:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 3401561054 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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: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:In-Reply-To:References: List-Owner; bh=N+jZODfN9F14Rg5uEgYkZv0rbYu+Ta1iDgrOkA9YQ6w=; b=use7SAt8Ht5zZ0 QKYPw2pJeb13bUOFpAjwrfawRe4ACqwYf5WGU5O+YxPxWo5aGTWcadt8UX2aDI+X4CA2lgOv+UK0N cY4RmZJGGy7x5osm+A9HYjTxzYKBiN/JWvp5+eAB1r1stUiTk6yt7rjdTKUaIERvJiuPZKYdYTyml Pyt6miPIHbwpvRSqPtp2rjN+CtTaLGnxmYvlbESBm54L18QKge+PlRFY/2pJyR/s9rCteReI9dclP kfT2KdLZjBQYUlJLiz1/6Q3kU3CvKYVDmZx8wcPGRI2hO7XBXA0aDKOimUiYETjQdDifuWEXNuxsI Wyez4pS4ovmttwQYFXsg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m90JN-003NV6-8w; Thu, 29 Jul 2021 07:18:33 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m90JH-003NSA-4e for linux-arm-kernel@lists.infradead.org; Thu, 29 Jul 2021 07:18:30 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1m90JC-000823-TG; Thu, 29 Jul 2021 09:18:22 +0200 Received: from [2a0a:edc0:0:900:2e4d:54ff:fe67:bfa5] (helo=ginster) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1m90JB-0002Hk-1m; Thu, 29 Jul 2021 09:18:21 +0200 Received: from jbe by ginster with local (Exim 4.92) (envelope-from ) id 1m90JB-0002Zi-0i; Thu, 29 Jul 2021 09:18:21 +0200 From: Juergen Borleis To: dmaengine@vger.kernel.org Cc: linux-imx@nxp.com, festevam@gmail.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, shawnguo@kernel.org, vkoul@kernel.org, kernel@pengutronix.de Subject: [PATCH] dma: imx-dma: configure the generic DMA type to make it work Date: Thu, 29 Jul 2021 09:18:21 +0200 Message-Id: <20210729071821.9857-1-jbe@pengutronix.de> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: jbe@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210729_001827_218362_058EECD0 X-CRM114-Status: GOOD ( 10.50 ) 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 Commit dea7a9f dmaengine: imx-dma: remove dma_slave_config direction usage changes the method from a "configuration when called" to an "configuration when used". Due to this, only the cyclic DMA type gets configured correctly, while the generic DMA type is left non-configured. Without this additional call, the struct imxdma_channel::word_size member is stuck at DMA_SLAVE_BUSWIDTH_UNDEFINED and imxdma_prep_slave_sg() always returns NULL. Signed-off-by: Juergen Borleis --- drivers/dma/imx-dma.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c index 7f116bb..2ddc31e 100644 --- a/drivers/dma/imx-dma.c +++ b/drivers/dma/imx-dma.c @@ -812,6 +812,8 @@ static struct dma_async_tx_descriptor *imxdma_prep_slave_sg( dma_length += sg_dma_len(sg); } + imxdma_config_write(chan, &imxdmac->config, direction); + switch (imxdmac->word_size) { case DMA_SLAVE_BUSWIDTH_4_BYTES: if (sg_dma_len(sgl) & 3 || sgl->dma_address & 3)