linux-kernel - RE: [PATCH v5] dma: Add Xilinx AXI Direct Memory Access Engine driver support

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Message-ID: <d4deaffbdf1e47749400a557e9918bbd@BN1BFFO11FD029.protection.gbl>
Date:	Thu, 5 Mar 2015 09:34:46 +0000
From:	Appana Durga Kedareswara Rao <appana.durga.rao@...inx.com>
To:	Paul Bolle <pebolle@...cali.nl>
CC:	"dan.j.williams@...el.com" <dan.j.williams@...el.com>,
	"vinod.koul@...el.com" <vinod.koul@...el.com>,
	Michal Simek <michals@...inx.com>,
	Soren Brinkmann <sorenb@...inx.com>,
	"dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Anirudha Sarangi <anirudh@...inx.com>,
	Srikanth Vemula <svemula@...inx.com>,
	Srikanth Thokala <sthokal@...inx.com>
Subject: RE: [PATCH v5] dma: Add Xilinx AXI Direct Memory Access Engine
 driver support

Hi Paul Bolle,

Thanks for reviewing the patch

> -----Original Message-----
> From: Paul Bolle [mailto:pebolle@...cali.nl]
> Sent: Tuesday, March 03, 2015 3:31 AM
> To: Appana Durga Kedareswara Rao
> Cc: dan.j.williams@...el.com; vinod.koul@...el.com; Michal Simek; Soren
> Brinkmann; dmaengine@...r.kernel.org; linux-arm-
> kernel@...ts.infradead.org; linux-kernel@...r.kernel.org; Appana Durga
> Kedareswara Rao; Anirudha Sarangi; Srikanth Vemula; Srikanth Thokala
> Subject: Re: [PATCH v5] dma: Add Xilinx AXI Direct Memory Access Engine
> driver support
>
> On Mon, 2015-03-02 at 23:25 +0530, Kedareswara rao Appana wrote:
> > --- a/drivers/dma/Kconfig
> > +++ b/drivers/dma/Kconfig
> > @@ -425,6 +425,19 @@ config IMG_MDC_DMA
> >     help
> >       Enable support for the IMG multi-threaded DMA controller (MDC).
> >
> > +config XILINX_DMA
> > +   tristate "Xilinx AXI DMA Engine"
> > +   depends on (ARCH_ZYNQ || MICROBLAZE)
> > +   select DMA_ENGINE
> > +   help
> > +     Enable support for Xilinx AXI DMA Soft IP.
> > +
> > +   This engine provides high-bandwidth direct memory access
> > +   between memory and AXI4-Stream type target peripherals.
> > +   It has two stream interfaces/channels, Memory Mapped to
> > +   Stream (MM2S) and Stream to Memory Mapped (S2MM) for the
> > +   data transfers.
> > +
>
> How did you test this patch? On next-20150302, running x86_64, I got:
>
> $ make ARCH=microblaze menuconfig
>   HOSTCC  scripts/basic/fixdep
>   HOSTCC  scripts/kconfig/mconf.o
>   SHIPPED scripts/kconfig/zconf.tab.c
>   SHIPPED scripts/kconfig/zconf.lex.c
>   HOSTCC  scripts/kconfig/zconf.tab.o
>   HOSTCC  scripts/kconfig/lxdialog/checklist.o
>   HOSTCC  scripts/kconfig/lxdialog/util.o
>   HOSTCC  scripts/kconfig/lxdialog/inputbox.o
>   HOSTCC  scripts/kconfig/lxdialog/textbox.o
>   HOSTCC  scripts/kconfig/lxdialog/yesno.o
>   HOSTCC  scripts/kconfig/lxdialog/menubox.o
>   HOSTLD  scripts/kconfig/mconf
> scripts/kconfig/mconf Kconfig
> drivers/dma/Kconfig:436: syntax error
> drivers/dma/Kconfig:435: unknown option "This"
> drivers/dma/Kconfig:436: unknown option "between"
> drivers/dma/Kconfig:437: unknown option "It"
> drivers/dma/Kconfig:438: unknown option "Stream"
> drivers/dma/Kconfig:439: unknown option "data"
> make[1]: *** [menuconfig] Error 1
> make: *** [menuconfig] Error 2
>
> Caused by the invalid indentation used here. You should add two spaces
> after the initial tab in lines 436 through 439.
>

My Bad I forgot to compile the patch before I sent to the open source.
Will fix this in the next version of the patch.

Regards,
Kedar.

>
> Paul Bolle



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