[alsa-devel] [PATCH 2/2] ASoC: add core audio driver for Broadcom Cygnus SOC.

[Mark Brown]

On Thu, Apr 02, 2015 at 11:47:18AM -0700, Lori Hikichi wrote:
> On 15-03-30 11:42 PM, Mark Brown wrote:

> >>+config SND_SOC_CYGNUS
> >>+	tristate "SoC platform audio for Broadcom Cygnus chips"
> >>+	depends on ARCH_BCM_CYGNUS || COMPILE_TEST
> >>+	default ARCH_BCM_CYGNUS

> Okay.

You don't need to reply to every single comment, the general assumption
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> >>+static void ringbuf_inc(void __iomem *audio_io, bool is_playback,
> >>+			const struct ringbuf_regs *p_rbuf)

> >So it looks like we're getting an interrupt per period and we have to
> >manually advance to the next one?

> Yes.

OK, so that seems fragile - what happens if we're slightly late
processing an interrupt or miss one entirely?  Most hardware has some
way to read back the current position which tends to be more reliable,
is that not an option here?
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