From: Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
To: Feng Kan <fkan-qTEPVZfXA3Y@public.gmane.org>
Cc: patches <patches-qTEPVZfXA3Y@public.gmane.org>,
"devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
Hieu Le <hnle-qTEPVZfXA3Y@public.gmane.org>
Subject: Re: [PATCH V2 1/3] i2c: busses: add SLIMpro I2C device driver on APM X-Gene platform
Date: Fri, 3 Apr 2015 20:21:38 +0200 [thread overview]
Message-ID: <20150403182138.GB1298@katana> (raw)
In-Reply-To: <CAL85gmD9qsjBdY2Qyv05AjutU_uad7aaRjxORk8om8WeRQM1Eg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
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> >> + paddr = dma_map_single(ctx->dev, ctx->dma_buffer, readlen,
> >> + DMA_FROM_DEVICE);
> >
> > The device should be the device of the dma channel.
>
> The device is not visible on linux, DMA is done by the helper processor.
> Perhaps you cah give me some idea how to do this. Thanks
Well, that is a question for the DMA maintainers. But we can fix this
later, I guess.
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From: wsa@the-dreams.de (Wolfram Sang)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V2 1/3] i2c: busses: add SLIMpro I2C device driver on APM X-Gene platform
Date: Fri, 3 Apr 2015 20:21:38 +0200 [thread overview]
Message-ID: <20150403182138.GB1298@katana> (raw)
In-Reply-To: <CAL85gmD9qsjBdY2Qyv05AjutU_uad7aaRjxORk8om8WeRQM1Eg@mail.gmail.com>
> >> + paddr = dma_map_single(ctx->dev, ctx->dma_buffer, readlen,
> >> + DMA_FROM_DEVICE);
> >
> > The device should be the device of the dma channel.
>
> The device is not visible on linux, DMA is done by the helper processor.
> Perhaps you cah give me some idea how to do this. Thanks
Well, that is a question for the DMA maintainers. But we can fix this
later, I guess.
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WARNING: multiple messages have this Message-ID (diff)
From: Wolfram Sang <wsa@the-dreams.de>
To: Feng Kan <fkan@apm.com>
Cc: patches <patches@apm.com>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
linux-i2c@vger.kernel.org,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>, Hieu Le <hnle@apm.com>
Subject: Re: [PATCH V2 1/3] i2c: busses: add SLIMpro I2C device driver on APM X-Gene platform
Date: Fri, 3 Apr 2015 20:21:38 +0200 [thread overview]
Message-ID: <20150403182138.GB1298@katana> (raw)
In-Reply-To: <CAL85gmD9qsjBdY2Qyv05AjutU_uad7aaRjxORk8om8WeRQM1Eg@mail.gmail.com>
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> >> + paddr = dma_map_single(ctx->dev, ctx->dma_buffer, readlen,
> >> + DMA_FROM_DEVICE);
> >
> > The device should be the device of the dma channel.
>
> The device is not visible on linux, DMA is done by the helper processor.
> Perhaps you cah give me some idea how to do this. Thanks
Well, that is a question for the DMA maintainers. But we can fix this
later, I guess.
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next prev parent reply other threads:[~2015-04-03 18:21 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-18 19:34 [PATCH V2 1/3] i2c: busses: add SLIMpro I2C device driver on APM X-Gene platform Feng Kan
2015-02-18 19:34 ` Feng Kan
2015-02-18 19:34 ` Feng Kan
[not found] ` <1424288043-2995-1-git-send-email-fkan-qTEPVZfXA3Y@public.gmane.org>
2015-02-18 19:34 ` [PATCH V2 2/3] Documentation: i2c: Add APM X-Gene platform SLIMpro I2C driver documentation Feng Kan
2015-02-18 19:34 ` Feng Kan
2015-02-18 19:34 ` Feng Kan
2015-02-18 19:34 ` [PATCH V2 3/3] arm64: dts: add proxy I2C device driver on APM X-Gene platform Feng Kan
2015-02-18 19:34 ` Feng Kan
2015-02-18 19:34 ` Feng Kan
2015-03-23 18:31 ` [PATCH V2 1/3] i2c: busses: add SLIMpro " Wolfram Sang
2015-03-23 18:31 ` Wolfram Sang
2015-03-23 18:31 ` Wolfram Sang
2015-03-27 23:30 ` Feng Kan
2015-03-27 23:30 ` Feng Kan
2015-03-27 23:30 ` Feng Kan
[not found] ` <CAL85gmD9qsjBdY2Qyv05AjutU_uad7aaRjxORk8om8WeRQM1Eg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-04-03 18:21 ` Wolfram Sang [this message]
2015-04-03 18:21 ` Wolfram Sang
2015-04-03 18:21 ` Wolfram Sang
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