Added a mechanism to refresh DMA buffers without the
need to call the "configure" API every time.
The reload is done after every DMA completion.
Signed-off-by: Sathish Kuttan <sathish.k.kuttan@intel.com>
Use user data to replace DMA's device pointer in
the callback function so that the user can retrieve
its context by that private data.
Signed-off-by: Jun Li <jun.r.li@intel.com>
Any word started with underscore followed by and uppercase letter or a
second underscore is a reserved word according with C99.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
Allow the application using DMA driver to register a callback for
a specific channel within the DMA device instead of one callback
per device.
Signed-off-by: Sathish Kuttan <sathish.k.kuttan@intel.com>
Introduce the Intel CAVS DMA. This is based out of the DesignWare
DMA IP but the register offset and bits have been changed in some
cases. However, the fundamental definition for the register field
has not been changed. Hence the registers begin with "DW_" to
indicate the Designware origin.
This driver currently supports the single block mode and linked list
multi-block mode. Scatter-Gather is not supported.
Change-Id: I33a8ed5141d9236167de50e14d3d407e95d6f553
Signed-off-by: Rajavardhan Gundi <rajavardhan.gundi@intel.com>
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Sathish Kuttan