linux-kernel - Re: [PATCH 2/2] DMAENGINE: driver for the ARM PL080/PL081 PrimeCells

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Message-ID: <AANLkTikFULpLdqOF9q2vpxiQKb__zzDRGGoYR1qE=zwA@mail.gmail.com>
Date:	Thu, 5 Aug 2010 14:58:12 +0530
From:	viresh kumar <viresh.linux@...il.com>
To:	Linus Walleij <linus.walleij@...ricsson.com>
Cc:	Dan Williams <dan.j.williams@...el.com>,
	Viresh Kumar <viresh.kumar@...com>,
	Kukjin Kim <kgene.kim@...sung.com>, yuanyabin1978@...a.com,
	linux-kernel@...r.kernel.org, Ben Dooks <ben-linux@...ff.org>,
	Peter Pearse <peter.pearse@....com>,
	linux-arm-kernel@...ts.infradead.org,
	Alessandro Rubini <rubini@...pv.it>
Subject: Re: [PATCH 2/2] DMAENGINE: driver for the ARM PL080/PL081 PrimeCells

On Tue, Jun 29, 2010 at 5:06 PM, Linus Walleij
<linus.walleij@...ricsson.com> wrote:
> This creates a DMAengine driver for the ARM PL080/PL081 PrimeCells
> based on the implementation earlier submitted by Peter Pearse.
> This is working like a charm for memcpy and slave DMA to the PL011
> PrimeCell on the PB11MPCore.
>
> This DMA controller is used in mostly unmodified form in the ARM
> RealView and Versatile platforms, in the ST-Ericsson Nomadik, and
> in the ST SPEAr platform.
>
> It has been converted to use the header from the Samsung PL080
> derivate instead of its own defintions. The Samsungs have a custom
> driver in their mach-* folders though, atleast we can share the
> register definitions.
>
> Cc: Peter Pearse <peter.pearse@....com>
> Cc: Ben Dooks <ben-linux@...ff.org>
> Cc: Kukjin Kim <kgene.kim@...sung.com>
> Cc: Alessandro Rubini <rubini@...pv.it>
> Cc: Viresh Kumar <viresh.kumar@...com>
> Signed-off-by: Linus Walleij <linus.walleij@...ricsson.com>
> ---
> Changes since last revision: this has now been successfully tested
> with PL011 UART on the PB11MPCore.
>
> It now uses the generic runtime slave control and not the PrimeCell
> extensions, and thus depends only on that patch set. With the previous
> patch to the header file this is cleanly separated from the ARM tree
> and any PrimeCell drivers and can go into the async_tx tree as it is
> without further dependencies.
> ---
>  drivers/dma/Kconfig        |    8 +
>  drivers/dma/Makefile       |    1 +
>  drivers/dma/amba-pl08x.c   | 2027 ++++++++++++++++++++++++++++++++++++++++++++
>  include/linux/amba/pl08x.h |  183 ++++
>  4 files changed, 2219 insertions(+), 0 deletions(-)
>  create mode 100644 drivers/dma/amba-pl08x.c
>  create mode 100644 include/linux/amba/pl08x.h
>

Acked-by: Viresh Kumar <viresh.kumar@...com>

regards,
viresh.
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