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.bu...@smartplayin.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandaga...@linaro.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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