Add a wrapper for reading the DMA count register, analogous
to the one for writing to this register.
Signed-off-by: NAnand Gadiyar <gadiyar@ti.com>
Cc: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: NFelipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

- DMA registers in Blackfin have different layout
- DMA interrupt flags need to be cleared by software
Signed-off-by: NBryan Wu <cooloney@kernel.org>
Signed-off-by: NFelipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>