Re: [alsa-devel] [RFC PATCH 8/9] soundwire: intel: remove platform devices and provide new interface

[Pierre-Louis Bossart]

On 9/17/19 12:55 AM, Greg KH wrote:
> On Mon, Sep 16, 2019 at 04:23:41PM -0500, Pierre-Louis Bossart wrote:
> > +/**
> > + * sdw_intel_probe() - SoundWire Intel probe routine
> > + * @parent_handle: ACPI parent handle
> > + * @res: resource data
> > + *
> > + * This creates SoundWire Master and Slave devices below the controller.
> > + * All the information necessary is stored in the context, and the res
> > + * argument pointer can be freed after this step.
> > + */
> > +struct sdw_intel_ctx
> > +*sdw_intel_probe(struct sdw_intel_res *res)
> > +{
> > +	return sdw_intel_probe_controller(res);
> > +}
> > +EXPORT_SYMBOL(sdw_intel_probe);
> > +
> > +/**
> > + * sdw_intel_startup() - SoundWire Intel startup
> > + * @ctx: SoundWire context allocated in the probe
> > + *
> > + */
> > +int sdw_intel_startup(struct sdw_intel_ctx *ctx)
> > +{
> > +	return sdw_intel_startup_controller(ctx);
> > +}
> > +EXPORT_SYMBOL(sdw_intel_startup);
>
> Why are you exporting these functions if no one calls them?

They are used in the next series, see '[RFC PATCH 04/12] ASoC: SOF: 
Intel: add SoundWire configuration interface'

+int hda_sdw_startup(struct snd_sof_dev *sdev)
+{
+	struct sof_intel_hda_dev *hdev;
+	int ret;
+
+	hdev = sdev->pdata->hw_pdata;
+
+	ret = sdw_intel_startup(hdev->sdw);
+	if (ret < 0)
+		return ret;
+	hda_sdw_int_enable(sdev, true);
+
+	return ret;
+}

These 4 functions sdw_intel_acpi_scan, sdw_intel_probe, 
sdw_intel_startup and sdw_intel_exit are the interface between the ASoC 
world and the Soundwire/Intel module.

I split the patches in two series to make the review and integration 
easier on maintainers. The first one is strictly contained within the 
driver/soundwire directory while will impact the soundwire and ASoC trees.