staging: comedi: dt282x: introduce dt282x_ao_setup_dma()
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Wed, 22 Oct 2014 21:36:38 +0000 (14:36 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 29 Oct 2014 08:01:19 +0000 (16:01 +0800)
commitecb11d8c28aa7fe761467873e69a3c5c66b57aed
tree0fbb9312e94a5b560b0b949b01e2284f2d4b736d
parent7bd7d905629a8748fa43d20b930213f54ac9177d
staging: comedi: dt282x: introduce dt282x_ao_setup_dma()

Introduce a helper function to read the analog output samples from the
async buffer and prep the DMA.

Use comedi_buf_read_samples() to read the analog output samples from
the async buffer.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/comedi/drivers/dt282x.c