mmc: renesas-sdhi, tmio: make dma more modular
authorSimon Horman <horms+renesas@verge.net.au>
Wed, 10 May 2017 09:25:26 +0000 (11:25 +0200)
committerUlf Hansson <ulf.hansson@linaro.org>
Tue, 20 Jun 2017 08:30:14 +0000 (10:30 +0200)
commit631fa73cfba8dcfd0d1db8eb608527183ed95648
treec7b8fa690facea3d3e7ed34ebfea089194edb9dc
parentb21f13d8f7bf1b65b2e5396fbd8bfb857627b666
mmc: renesas-sdhi, tmio: make dma more modular

Refactor DMA support to allow it to be provided by a set of call-backs
that are provided by a host driver. The motivation is to allow multiple
DMA implementations to be provided and instantiated at run-time.

Instantiate the existing DMA implementation from the sh_mobile_sdhi driver
which appears to match the current use-case. This has the side effect
of moving the DMA code from the tmio_core to the sh_mobile_sdhi driver.

A follow-up patch will change the source file for the SDHI DMA
implementation accordingly. Another follow-up patch will re-organise the
SDHI driver removing the need for tmio_mmc_get_dma_ops().

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
drivers/mmc/host/Makefile
drivers/mmc/host/sh_mobile_sdhi.c
drivers/mmc/host/tmio_mmc.c
drivers/mmc/host/tmio_mmc.h
drivers/mmc/host/tmio_mmc_dma.c
drivers/mmc/host/tmio_mmc_pio.c