From patchwork Mon Nov 11 10:26:07 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: hongbo.zhang@freescale.com X-Patchwork-Id: 3167011 X-Patchwork-Delegate: vinod.koul@intel.com Return-Path: X-Original-To: patchwork-dmaengine@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 19F9EC045B for ; Mon, 11 Nov 2013 10:26:45 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id CD4462030B for ; Mon, 11 Nov 2013 10:26:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2C09A20303 for ; Mon, 11 Nov 2013 10:26:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753071Ab3KKK0i (ORCPT ); Mon, 11 Nov 2013 05:26:38 -0500 Received: from va3ehsobe003.messaging.microsoft.com ([216.32.180.13]:44319 "EHLO va3outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753009Ab3KKK0i (ORCPT ); Mon, 11 Nov 2013 05:26:38 -0500 Received: from mail214-va3-R.bigfish.com (10.7.14.248) by VA3EHSOBE006.bigfish.com (10.7.40.26) with Microsoft SMTP Server id 14.1.225.22; Mon, 11 Nov 2013 10:26:37 +0000 Received: from mail214-va3 (localhost [127.0.0.1]) by mail214-va3-R.bigfish.com (Postfix) with ESMTP id 66700AE00AB; Mon, 11 Nov 2013 10:26:37 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 0 X-BigFish: VS0(zzzz1f42h208ch1ee6h1de0h1fdah2073h2146h1202h1e76h1d1ah1d2ah1fc6hzz1de098h8275bh1de097hz2dh2a8h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1b2fh2222h224fh1fb3h1d0ch1d2eh1d3fh1dfeh1dffh1e23h1fe8h1ff5h2218h2216h1155h) Received: from mail214-va3 (localhost.localdomain [127.0.0.1]) by mail214-va3 (MessageSwitch) id 1384165594134167_9939; Mon, 11 Nov 2013 10:26:34 +0000 (UTC) Received: from VA3EHSMHS023.bigfish.com (unknown [10.7.14.246]) by mail214-va3.bigfish.com (Postfix) with ESMTP id 13E28D60049; Mon, 11 Nov 2013 10:26:34 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by VA3EHSMHS023.bigfish.com (10.7.99.33) with Microsoft SMTP Server (TLS) id 14.16.227.3; Mon, 11 Nov 2013 10:26:33 +0000 Received: from az84smr01.freescale.net (10.64.34.197) by 039-SN1MMR1-001.039d.mgd.msft.net (10.84.1.13) with Microsoft SMTP Server (TLS) id 14.3.158.2; Mon, 11 Nov 2013 10:26:32 +0000 Received: from hongbo.ap.freescale.net (b45939-01.ap.freescale.net [10.193.20.52]) by az84smr01.freescale.net (8.14.3/8.14.0) with ESMTP id rABAQBXh009852; Mon, 11 Nov 2013 03:26:30 -0700 From: To: , , CC: , , Hongbo Zhang Subject: [PATCH resend 3/3] DMA: Freescale: update driver to support 8-channel DMA engine Date: Mon, 11 Nov 2013 18:26:07 +0800 Message-ID: <1384165567-4883-4-git-send-email-hongbo.zhang@freescale.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1384165567-4883-1-git-send-email-hongbo.zhang@freescale.com> References: <1384165567-4883-1-git-send-email-hongbo.zhang@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Hongbo Zhang This patch adds support to 8-channel DMA engine, thus the driver works for both the new 8-channel and the legacy 4-channel DMA engines. Signed-off-by: Hongbo Zhang --- drivers/dma/Kconfig | 9 +++++---- drivers/dma/fsldma.c | 9 ++++++--- drivers/dma/fsldma.h | 2 +- 3 files changed, 12 insertions(+), 8 deletions(-) diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig index f238cfd..cd32586 100644 --- a/drivers/dma/Kconfig +++ b/drivers/dma/Kconfig @@ -89,14 +89,15 @@ config AT_HDMAC Support the Atmel AHB DMA controller. config FSL_DMA - tristate "Freescale Elo and Elo Plus DMA support" + tristate "Freescale Elo series DMA support" depends on FSL_SOC select DMA_ENGINE select ASYNC_TX_ENABLE_CHANNEL_SWITCH ---help--- - Enable support for the Freescale Elo and Elo Plus DMA controllers. - The Elo is the DMA controller on some 82xx and 83xx parts, and the - Elo Plus is the DMA controller on 85xx and 86xx parts. + Enable support for the Freescale Elo series DMA controllers. + The Elo is the DMA controller on some mpc82xx and mpc83xx parts, the + EloPlus is on mpc85xx and mpc86xx and Pxxx parts, and the Elo3 is on + some Txxx and Bxxx parts. config MPC512X_DMA tristate "Freescale MPC512x built-in DMA engine support" diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c index b3f3e90..4e89812 100644 --- a/drivers/dma/fsldma.c +++ b/drivers/dma/fsldma.c @@ -1253,7 +1253,9 @@ static int fsl_dma_chan_probe(struct fsldma_device *fdev, WARN_ON(fdev->feature != chan->feature); chan->dev = fdev->dev; - chan->id = ((res.start - 0x100) & 0xfff) >> 7; + chan->id = (res.start & 0xfff) < 0x300 ? + ((res.start - 0x100) & 0xfff) >> 7 : + ((res.start - 0x200) & 0xfff) >> 7; if (chan->id >= FSL_DMA_MAX_CHANS_PER_DEVICE) { dev_err(fdev->dev, "too many channels for device\n"); err = -EINVAL; @@ -1426,6 +1428,7 @@ static int fsldma_of_remove(struct platform_device *op) } static const struct of_device_id fsldma_of_ids[] = { + { .compatible = "fsl,elo3-dma", }, { .compatible = "fsl,eloplus-dma", }, { .compatible = "fsl,elo-dma", }, {} @@ -1447,7 +1450,7 @@ static struct platform_driver fsldma_of_driver = { static __init int fsldma_init(void) { - pr_info("Freescale Elo / Elo Plus DMA driver\n"); + pr_info("Freescale Elo series DMA driver\n"); return platform_driver_register(&fsldma_of_driver); } @@ -1459,5 +1462,5 @@ static void __exit fsldma_exit(void) subsys_initcall(fsldma_init); module_exit(fsldma_exit); -MODULE_DESCRIPTION("Freescale Elo / Elo Plus DMA driver"); +MODULE_DESCRIPTION("Freescale Elo series DMA driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/dma/fsldma.h b/drivers/dma/fsldma.h index f5c3879..1ffc244 100644 --- a/drivers/dma/fsldma.h +++ b/drivers/dma/fsldma.h @@ -112,7 +112,7 @@ struct fsldma_chan_regs { }; struct fsldma_chan; -#define FSL_DMA_MAX_CHANS_PER_DEVICE 4 +#define FSL_DMA_MAX_CHANS_PER_DEVICE 8 struct fsldma_device { void __iomem *regs; /* DGSR register base */