mmc: add runtime and system power-management support to the MMCIF driver
Adding support for runtime power-management to the MMCIF driver allows it to save power as long as no card is present. To also allow to turn off the power domain at that time, we release DMA channels during that time, since on some sh-mobile systems the DMA controller(s) and the MMCIF block belong to the same power domain. System-wide power management has been tested with experimental PM patches on AP4-based systems. Signed-off-by:Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by:
Chris Ball <cjb@laptop.org>
parent
e6ee7182
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