linux-kernel - Re: [PATCH v1] mmc: mmci: Add qcom dml support to the driver.

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Date:	Thu, 17 Jul 2014 20:41:05 +0100
From:	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:	linux-mmc@...r.kernel.org
CC:	Linus Walleij <linus.walleij@...aro.org>,
	Chris Ball <chris@...ntf.net>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Russell King <linux@....linux.org.uk>,
	linux-kernel@...r.kernel.org, agross@...eaurora.org,
	linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v1] mmc: mmci: Add qcom dml support to the driver.


On 17/07/14 20:36, Srinivas Kandagatla wrote:
> On Qualcomm APQ8064 SOCs, SD card controller has an additional glue
> called DML (Data Mover Local/Lite) to assist dma transfers.
> This hardware needs to be setup before any dma transfer is requested.
> DML itself is not a DMA engine, its just a gule between the SD card
> controller and dma controller.
>
> Most of this code has been ported from qualcomm's 3.4 kernel.
>
> This patch adds the code necessary to intialize the hardware and setup
> before doing any dma transfers.
>
> Tested-by: Prakash Burla <prakash.burla@...rtplayin.com>
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> ---

Here is the change log which I forgot in the original patch

Changes since RFC:
	- Moved	qcom_dml.* to mmci_qcom_dml.* as suggested by Linus W.
	- added BAM DMA dependency in Kconfig as suggested by Linus W
	


>   drivers/mmc/host/Kconfig         |  11 +++
>   drivers/mmc/host/Makefile        |   1 +
>   drivers/mmc/host/mmci.c          |  19 ++++-
>   drivers/mmc/host/mmci_qcom_dml.c | 171 +++++++++++++++++++++++++++++++++++++++
>   drivers/mmc/host/mmci_qcom_dml.h |  17 ++++
>   5 files changed, 218 insertions(+), 1 deletion(-)
>   create mode 100644 drivers/mmc/host/mmci_qcom_dml.c
>   create mode 100644 drivers/mmc/host/mmci_qcom_dml.h
>


thanks,
srini
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