[alsa-devel] [PATCH RFC v3 3/7] ASoC: hdmi-codec: Add hdmi-codec for external HDMI-encoders

Mark Brown broonie at kernel.org
Mon Aug 17 20:41:02 CEST 2015


On Mon, Aug 17, 2015 at 10:07:55AM +0300, Jyri Sarha wrote:
> On 08/14/15 19:18, Mark Brown wrote:
> >On Fri, Aug 14, 2015 at 12:30:41PM +0300, Jyri Sarha wrote:

> >>+	/* Called when ASoC starts an audio stream setup. The call
> >>+	 * provides an audio abort callback for stoping an ongoing
> >>+	 * stream if the HDMI audio becomes unavailable.
> >>+	 * Optional */
> >>+	int (*audio_startup)(struct device *dev,
> >>+			     void (*abort_cb)(struct device *dev));

> >I'm a bit confused about what is going to use abort_cb() and why they
> >wouldn't just call shutdown instead?

> audio_shutdown() is for ASoC side to tell video side that audio playback has
> stopped.

> The abort_cb() is for video side to inform ASoC that current audio stream
> can not continue anymore and it should be aborted. The similar mechanism is
> currently in use in sound/soc/omap/omap-hdmi-audio.c.

Someone reading the code needs to be able to understand this.
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