- Request api allows to synchronize controls along
with buffers.
- Client allocates a request fd. This request fd is
associated with control and set using s_ext_ctrls.
Such controls are stored by the framework and not
applied immediately.
- Request fd is also associated with input qbuf and
queued to driver. Following this actual request is
queued. Buffers do not enter the queue untill the
request is queued.
- As part of qbuf, driver call request_setup() which
inturn sets the control to driver.
Change-Id: I316c4dc2a0091b21059230be5ee5fd6379259456
Signed-off-by: Darshana Patil <quic_darshana@quicinc.com>