tree 3ac10196b0713885f85d8fae054f3e867c19c77c
parent 0545230f1764bc639e14eea3fe944d9d16e91a92
author Adrian Hunter <adrian.hunter@intel.com> 1415097766 +0200
committer Ulf Hansson <ulf.hansson@linaro.org> 1415619653 +0100

mmc: sdhci: Add 64-bit ADMA support

Add 64-bit ADMA support including:
	- add 64-bit ADMA descriptor
	- add SDHCI_USE_64_BIT_DMA flag
	- set upper 32-bits of DMA addresses
	- ability to select 64-bit ADMA
	- ability to use 64-bit ADMA sizes and alignment
	- display "ADMA 64-bit" when host is added

It is assumed that a 64-bit capable device has set a 64-bit DMA mask
and *must* do 64-bit DMA.  A driver has the opportunity to change
that during the first call to ->enable_dma().  Similarly
SDHCI_QUIRK2_BROKEN_64_BIT_DMA must be left to the drivers to
implement.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>