From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vinod Koul Subject: Re: [PATCH v6 7/8] dmaengine: add a driver for Intel integrated DMA 64-bit Date: Tue, 28 Jul 2015 14:13:47 +0530 Message-ID: <20150728084347.GB29916@localhost> References: <1438009443-55317-1-git-send-email-andriy.shevchenko@linux.intel.com> <1438009443-55317-8-git-send-email-andriy.shevchenko@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1438009443-55317-8-git-send-email-andriy.shevchenko@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org To: Andy Shevchenko Cc: linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org, Greg Kroah-Hartman , Lee Jones , Mika Westerberg , linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org, Heikki Krogerus , Jarkko Nikula , "Wysocki, Rafael J" , mturquette@baylibre.com, sboyd@codeaurora.org List-Id: linux-pm@vger.kernel.org On Mon, Jul 27, 2015 at 06:04:02PM +0300, Andy Shevchenko wrote: > Intel integrated DMA (iDMA) 64-bit is a specific IP that is used as a part of > LPSS devices such as HSUART or SPI. The iDMA IP is attached for private > usage on each host controller independently. > > While it has similarities with Synopsys DesignWare DMA, the following > distinctions doesn't allow to use the existing driver: > - 64-bit mode with corresponding changes in Hardware Linked List data structure > - many slight differences in the channel registers > > Moreover this driver is based on the DMA virtual channels framework that helps > to make the driver cleaner and easy to understand. Acked-by: Vinod Koul -- ~Vinod