linux-kernel - Re: [PATCH V3 4/4] dma: add Qualcomm Technologies HIDMA channel driver

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Date:	Mon, 9 Nov 2015 12:19:24 -0600
From:	Rob Herring <robh@...nel.org>
To:	Sinan Kaya <okaya@...eaurora.org>
Cc:	dmaengine@...r.kernel.org, timur@...eaurora.org,
	cov@...eaurora.org, jcm@...hat.com, agross@...eaurora.org,
	linux-arm-msm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Vinod Koul <vinod.koul@...el.com>,
	Dan Williams <dan.j.williams@...el.com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V3 4/4] dma: add Qualcomm Technologies HIDMA channel
 driver

On Sat, Nov 07, 2015 at 11:53:00PM -0500, Sinan Kaya wrote:
> This patch adds support for hidma engine. The driver
> consists of two logical blocks. The DMA engine interface
> and the low-level interface. The hardware only supports
> memcpy/memset and this driver only support memcpy
> interface. HW and driver doesn't support slave interface.
> 
> Signed-off-by: Sinan Kaya <okaya@...eaurora.org>
> ---
>  .../devicetree/bindings/dma/qcom_hidma.txt         |  18 +
>  drivers/dma/qcom/Kconfig                           |   9 +
>  drivers/dma/qcom/Makefile                          |   2 +
>  drivers/dma/qcom/hidma.c                           | 743 ++++++++++++++++
>  drivers/dma/qcom/hidma.h                           | 157 ++++
>  drivers/dma/qcom/hidma_dbg.c                       | 225 +++++
>  drivers/dma/qcom/hidma_ll.c                        | 944 +++++++++++++++++++++
>  7 files changed, 2098 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/dma/qcom_hidma.txt
>  create mode 100644 drivers/dma/qcom/hidma.c
>  create mode 100644 drivers/dma/qcom/hidma.h
>  create mode 100644 drivers/dma/qcom/hidma_dbg.c
>  create mode 100644 drivers/dma/qcom/hidma_ll.c
> 
> diff --git a/Documentation/devicetree/bindings/dma/qcom_hidma.txt b/Documentation/devicetree/bindings/dma/qcom_hidma.txt
> new file mode 100644
> index 0000000..c9fb2d44
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/dma/qcom_hidma.txt
> @@ -0,0 +1,18 @@
> +Qualcomm Technologies HIDMA Channel driver
> +
> +Required properties:
> +- compatible: must contain "qcom,hidma"

This should be "qcom,hidma-1.0" to match the example and driver. I 
would drop "qcom,hidma" altogether.

Rob
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