linux-kernel - Re: [RFC PATCH v2 05/12] dmaengine: PL08x: Add support for different maximum transfer size

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Date:	Tue, 25 Jun 2013 21:40:04 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	Tomasz Figa <tomasz.figa@...il.com>
Cc:	linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-spi@...r.kernel.org, alsa-devel@...a-project.org,
	Kukjin Kim <kgene.kim@...sung.com>, Dan Williams <djbw@...com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Alessandro Rubini <rubini@...dd.com>,
	Giancarlo Asnaghi <giancarlo.asnaghi@...com>,
	Mark Brown <broonie@...nel.org>,
	Grant Likely <grant.likely@...aro.org>,
	Sangbeom Kim <sbkim73@...sung.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	Padmavathi Venna <padma.v@...sung.com>,
	Thomas Abraham <thomas.abraham@...aro.org>,
	Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
	Heiko Stübner <heiko@...ech.de>,
	Sylwester Nawrocki <sylvester.nawrocki@...il.com>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Alban Bedel <alban.bedel@...onic-design.de>
Subject: Re: [RFC PATCH v2 05/12] dmaengine: PL08x: Add support for
 different maximum transfer size

On Sat, Jun 22, 2013 at 10:42:37PM +0200, Tomasz Figa wrote:
> PL080S has separate register to store transfer size in, allowing single
> transfer to be much larger than in standard PL080.
> 
> This patch makes the amba-pl08x driver aware of this and removes writing
> transfer size to reserved bits of CH_CONTROL register on PL080S, which
> was not a problem witn transfer sizes fitting the original bitfield
> of PL080, but now would overwrite other fields.
> 
> Signed-off-by: Tomasz Figa <tomasz.figa@...il.com>
Acked by: Vinod Koul <vinod.koul@...el.com>

--
~Vinod
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