From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: [RFC,1/6] dma: Add Synopsys eDMA IP core driver From: Bjorn Helgaas Message-Id: <20181212230041.GM99796@google.com> Date: Wed, 12 Dec 2018 17:00:41 -0600 To: Gustavo Pimentel Cc: linux-pci@vger.kernel.org, dmaengine@vger.kernel.org, Vinod Koul , Eugeniy Paltsev , Andy Shevchenko , Joao Pinto List-ID: T24gV2VkLCBEZWMgMTIsIDIwMTggYXQgMTI6MTM6MjFQTSArMDEwMCwgR3VzdGF2byBQaW1lbnRl bCB3cm90ZToKPiBBZGQgU3lub3BzeXMgZURNQSBJUCBjb3JlIGRyaXZlciB0byBrZXJuZWwuCj4g Cj4gVGhpcyBjb3JlIGRyaXZlciwgaW5pdGlhbGl6ZXMgYW5kIGNvbmZpZ3VyZXMgdGhlIGVETUEg SVAgdXNpbmcgdm1hLWhlbHBlcnMKPiBmdW5jdGlvbnMgYW5kIGRtYS1lbmdpbmUgc3Vic3lzdGVt Lgo+IAo+IEFsc28gY3JlYXRlcyBhbiBhYnN0cmF0aW9uIGxheWVyIHRocm91Z2ggY2FsbGJhY2tz IGFsbG93aW5nIGRpZmZlcmVudAo+IHJlZ2lzdGVycyBtYXBwaW5ncyBpbiB0aGUgZnV0dXJlLCBv cmdhbml6ZWQgaW4gdG8gdmVyc2lvbnMuCj4gCj4gVGhpcyBkcml2ZXIgY2FuIGJlIGNvbXBpbGUg YXMgYnVpbHQtaW4gb3IgZXh0ZXJuYWwgbW9kdWxlIGluIGtlcm5lbC4KPiAKPiBUbyBlbmFibGUg dGhpcyBkcml2ZXIganVzdCBzZWxlY3QgRFdfRURNQSBvcHRpb24gaW4ga2VybmVsIGNvbmZpZ3Vy YXRpb24sCj4gaG93ZXZlciBpdCByZXF1aXJlcyBhbmQgc2VsZWN0cyBhdXRvbWF0aWNhbGx5IERN QV9FTkdJTkUgYW5kCj4gRE1BX1ZJUlRVQUxfQ0hBTk5FTFMgb3B0aW9uIHRvby4KPiAKPiBTaWdu ZWQtb2ZmLWJ5OiBHdXN0YXZvIFBpbWVudGVsIDxndXN0YXZvLnBpbWVudGVsQHN5bm9wc3lzLmNv bT4KPiBDYzogVmlub2QgS291bCA8dmtvdWxAa2VybmVsLm9yZz4KPiBDYzogRXVnZW5peSBQYWx0 c2V2IDxwYWx0c2V2QHN5bm9wc3lzLmNvbT4KPiBDYzogQW5keSBTaGV2Y2hlbmtvIDxhbmRyaXku c2hldmNoZW5rb0BsaW51eC5pbnRlbC5jb20+Cj4gQ2M6IEpvYW8gUGludG8gPGpwaW50b0BzeW5v cHN5cy5jb20+Cgo+IC0tLSAvZGV2L251bGwKPiArKysgYi9kcml2ZXJzL2RtYS9kdy1lZG1hL2R3 LWVkbWEtY29yZS5jCj4gQEAgLTAsMCArMSw5MjUgQEAKPiArLy8gU1BEWC1MaWNlbnNlLUlkZW50 aWZpZXI6IEdQTC0yLjAKPiArLy8gQ29weXJpZ2h0IChjKSAyMDE4IFN5bm9wc3lzLCBJbmMuIGFu ZC9vciBpdHMgYWZmaWxpYXRlcy4KPiArLy8gU3lub3BzeXMgRGVzaWduV2FyZSBlRE1BIGNvcmUg ZHJpdmVyCgpUaGUgU1BEWCBsaW5lIGluIC5jIGZpbGVzIG5lZWRzIHRoZSAvLyBjb21tZW50IGZv ciBzb21lIG9ic2N1cmUgcmVhc29uCkkgY2FuJ3QgcmVtZW1iZXIsIGJ1dCBiYXNlZCBvbiB0aGUg b3RoZXIgZHJpdmVycy9kbWEvKi5jIGZpbGVzLCBpdApsb29rcyBsaWtlIHRoZSBjb252ZW50aW9u IGlzIHRoZSB1c3VhbCAvKiAuLiAqLyBjb21tZW50cyBmb3IgdGhlIHJlc3QuCgpJIHRoaW5rIHRo ZSBTUERYIGxpbmUgaXMgLyogKi8gaW4gLmggZmlsZXMgdGhvdWdoLiAgVGhlIHJ1bGVzIGFyZQp1 bmRlciBEb2N1bWVudGF0aW9uLyBzb21ld2hlcmUuCg== From mboxrd@z Thu Jan 1 00:00:00 1970 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=-5.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS, URIBL_BLOCKED,USER_AGENT_MUTT 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 119D2C65BAF for ; 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Wed, 12 Dec 2018 18:00:44 -0500 Received: from localhost (unknown [69.71.4.100]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id CC49F20851; Wed, 12 Dec 2018 23:00:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544655644; bh=xrD8KmUofl1jLPNMXTlUYZ7Vbm+d6prIy3JTB4wO8cE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=cHIimy8VNlxz7XJrV/Xk/IZc32Hioxlu5WjPkWi4h+7EtamzlaTcS0+simztp13Ba hdiHkRR4vg8imOk8DkZFB1DYi91VMZfEo3W6p0SqTXvbHsv5OKiwt4uyX73LWqBfSg +v2lXtmPNDL5lcBKush866X77F/um0GGKj4eaefQ= Date: Wed, 12 Dec 2018 17:00:41 -0600 From: Bjorn Helgaas To: Gustavo Pimentel Cc: linux-pci@vger.kernel.org, dmaengine@vger.kernel.org, Vinod Koul , Eugeniy Paltsev , Andy Shevchenko , Joao Pinto Subject: Re: [RFC 1/6] dma: Add Synopsys eDMA IP core driver Message-ID: <20181212230041.GM99796@google.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Wed, Dec 12, 2018 at 12:13:21PM +0100, Gustavo Pimentel wrote: > Add Synopsys eDMA IP core driver to kernel. > > This core driver, initializes and configures the eDMA IP using vma-helpers > functions and dma-engine subsystem. > > Also creates an abstration layer through callbacks allowing different > registers mappings in the future, organized in to versions. > > This driver can be compile as built-in or external module in kernel. > > To enable this driver just select DW_EDMA option in kernel configuration, > however it requires and selects automatically DMA_ENGINE and > DMA_VIRTUAL_CHANNELS option too. > > Signed-off-by: Gustavo Pimentel > Cc: Vinod Koul > Cc: Eugeniy Paltsev > Cc: Andy Shevchenko > Cc: Joao Pinto > --- /dev/null > +++ b/drivers/dma/dw-edma/dw-edma-core.c > @@ -0,0 +1,925 @@ > +// SPDX-License-Identifier: GPL-2.0 > +// Copyright (c) 2018 Synopsys, Inc. and/or its affiliates. > +// Synopsys DesignWare eDMA core driver The SPDX line in .c files needs the // comment for some obscure reason I can't remember, but based on the other drivers/dma/*.c files, it looks like the convention is the usual /* .. */ comments for the rest. I think the SPDX line is /* */ in .h files though. The rules are under Documentation/ somewhere.