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ad4df685f1
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3 Commits

Author SHA1 Message Date
Andrew Boie
ad4df685f1 i2s: add i2s_configure() as a system call 
Now that k_mem_slabs are tracked as kernel objects,
even though they have no user facing API, we can now
accept a pointer to one in the configure API.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
 2018-11-15 16:20:36 -05:00
Andrew Boie
76a160ba38 i2s_handlers: fix incorrect k_mem_slab_free arg 
The API wants a pointer to the memory block pointer for
some reason (even though it's unnecessary to the
implementation).

Compiler won't warn if a void * is passed instead of a
void **.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
 2018-11-15 16:20:36 -05:00
Andrew Boie
06c23f157f i2s: expose i2s APIs to user mode 
User mode may now access the read, write, and trigger APIs.
Unlike supervisor mode, memory slabs are not dealt with directly,
the data is always copied.

A new driver API added to fetch the current channel configuration,
used by the system call handlers.

The i2s_sam_ssc driver updated for the new API. CAVS driver not
modified as there is no user mode port to Xtensa yet.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
 2018-08-13 16:44:09 -07:00