From patchwork Wed May 10 08:42:23 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Ujfalusi X-Patchwork-Id: 9719491 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 0839A601E7 for ; Wed, 10 May 2017 08:45:37 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 01E7A284E4 for ; Wed, 10 May 2017 08:45:37 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EAB8728558; Wed, 10 May 2017 08:45:36 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 87D1D284E4 for ; Wed, 10 May 2017 08:45:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752481AbdEJInA (ORCPT ); Wed, 10 May 2017 04:43:00 -0400 Received: from lelnx194.ext.ti.com ([198.47.27.80]:21965 "EHLO lelnx194.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752472AbdEJImy (ORCPT ); Wed, 10 May 2017 04:42:54 -0400 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by lelnx194.ext.ti.com (8.15.1/8.15.1) with ESMTP id v4A8gSLP028981; Wed, 10 May 2017 03:42:28 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ti.com; s=ti-com-17Q1; t=1494405748; bh=jcra+VJZVc7hPP9fiaVTrRqa6x35Ox2waaow8+tJQAs=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=mtWbhpx+kOTHFXl+zAy6dDEcfdrk4KepngTzt1ijxEeEsxcE61dJrTHE2vhgUPLCj TdPMViFkorG7xrSuoj075GlEzC2K4RqDtDlz2Tx9kogKBuah+Lm147DCvnVikJIjHT XgpOC81d0jlJVNnp3PO6NKImKm3FMBGBcvcSYupo= Received: from DFLE72.ent.ti.com (dfle72.ent.ti.com [128.247.5.109]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id v4A8gS19009543; Wed, 10 May 2017 03:42:28 -0500 Received: from dflp32.itg.ti.com (10.64.6.15) by DFLE72.ent.ti.com (128.247.5.109) with Microsoft SMTP Server id 14.3.294.0; Wed, 10 May 2017 03:42:27 -0500 Received: from feketebors.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp32.itg.ti.com (8.14.3/8.13.8) with ESMTP id v4A8gLDQ005883; Wed, 10 May 2017 03:42:25 -0500 From: Peter Ujfalusi To: , , , CC: , , , , Russell King , , Subject: [PATCH v2 01/10] dmaengine: omap-dma: port_window support correction for both direction Date: Wed, 10 May 2017 11:42:23 +0300 Message-ID: <20170510084231.19302-2-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.12.2 In-Reply-To: <20170510084231.19302-1-peter.ujfalusi@ti.com> References: <20170510084231.19302-1-peter.ujfalusi@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP When the port_window support was verified it was done on setup where only the MEM_TO_DEV direction was enabled. This got un-noticed and thus only this direction worked. Now that I have managed to get a setup to verify both direction it turned out that the setup was incorrect: omap_desc members are settings for the slave port while the omap_sg members apply to the memory side of the sDMA setup. Fixes: 527a27591312 ("dmaengine: omap-dma: Fix the port_window support") Signed-off-by: Peter Ujfalusi Cc: Russell King Cc: dmaengine@vger.kernel.org Cc: dan.j.williams@intel.com Cc: vinod.koul@intel.com Tested-by: Tony Lindgren --- drivers/dma/omap-dma.c | 39 +++++++++++++++------------------------ 1 file changed, 15 insertions(+), 24 deletions(-) diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c index eed745a598fa..4fc86d40b50c 100644 --- a/drivers/dma/omap-dma.c +++ b/drivers/dma/omap-dma.c @@ -948,12 +948,6 @@ static struct dma_async_tx_descriptor *omap_dma_prep_slave_sg( return NULL; } - /* When the port_window is used, one frame must cover the window */ - if (port_window) { - burst = port_window; - port_window_bytes = port_window * es_bytes[es]; - } - /* Now allocate and setup the descriptor. */ d = kzalloc(sizeof(*d) + sglen * sizeof(d->sg[0]), GFP_ATOMIC); if (!d) @@ -963,6 +957,21 @@ static struct dma_async_tx_descriptor *omap_dma_prep_slave_sg( d->dev_addr = dev_addr; d->es = es; + /* When the port_window is used, one frame must cover the window */ + if (port_window) { + burst = port_window; + port_window_bytes = port_window * es_bytes[es]; + + d->ei = 1; + /* + * One frame covers the port_window and by configure + * the source frame index to be -1 * (port_window - 1) + * we instruct the sDMA that after a frame is processed + * it should move back to the start of the window. + */ + d->fi = -(port_window_bytes - 1); + } + d->ccr = c->ccr | CCR_SYNC_FRAME; if (dir == DMA_DEV_TO_MEM) { d->csdp = CSDP_DST_BURST_64 | CSDP_DST_PACKED; @@ -987,14 +996,6 @@ static struct dma_async_tx_descriptor *omap_dma_prep_slave_sg( d->ccr |= CCR_SRC_AMODE_POSTINC; if (port_window) { d->ccr |= CCR_DST_AMODE_DBLIDX; - d->ei = 1; - /* - * One frame covers the port_window and by configure - * the source frame index to be -1 * (port_window - 1) - * we instruct the sDMA that after a frame is processed - * it should move back to the start of the window. - */ - d->fi = -(port_window_bytes - 1); if (port_window_bytes >= 64) d->csdp |= CSDP_DST_BURST_64; @@ -1050,16 +1051,6 @@ static struct dma_async_tx_descriptor *omap_dma_prep_slave_sg( osg->addr = sg_dma_address(sgent); osg->en = en; osg->fn = sg_dma_len(sgent) / frame_bytes; - if (port_window && dir == DMA_DEV_TO_MEM) { - osg->ei = 1; - /* - * One frame covers the port_window and by configure - * the source frame index to be -1 * (port_window - 1) - * we instruct the sDMA that after a frame is processed - * it should move back to the start of the window. - */ - osg->fi = -(port_window_bytes - 1); - } if (d->using_ll) { osg->t2_desc = dma_pool_alloc(od->desc_pool, GFP_ATOMIC,