Re: [PATCH 2/2] soundwire: intel: transition to 3 steps initialization

[Vinod Koul]

On 21-05-20, 02:23, Liao, Bard wrote:
> > -----Original Message-----
> > From: Vinod Koul <vkoul@xxxxxxxxxx>
> > Sent: Wednesday, May 20, 2020 9:54 PM
> > To: Bard Liao <yung-chuan.liao@xxxxxxxxxxxxxxx>
> > Cc: alsa-devel@xxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; tiwai@xxxxxxx;
> > broonie@xxxxxxxxxx; gregkh@xxxxxxxxxxxxxxxxxxx; jank@xxxxxxxxxxx;
> > srinivas.kandagatla@xxxxxxxxxx; rander.wang@xxxxxxxxxxxxxxx;
> > ranjani.sridharan@xxxxxxxxxxxxxxx; hui.wang@xxxxxxxxxxxxx; pierre-
> > louis.bossart@xxxxxxxxxxxxxxx; Kale, Sanyog R <sanyog.r.kale@xxxxxxxxx>;
> > Blauciak, Slawomir <slawomir.blauciak@xxxxxxxxx>; Lin, Mengdong
> > <mengdong.lin@xxxxxxxxx>; Liao, Bard <bard.liao@xxxxxxxxx>
> > Subject: Re: [PATCH 2/2] soundwire: intel: transition to 3 steps initialization
> > 
> > On 20-05-20, 03:19, Bard Liao wrote:
> > > From: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
> > >
> > > Rather than a plain-vanilla init/exit, this patch provides 3 steps in
> > > the initialization (ACPI scan, probe, startup) which makes it easier to
> > > detect platform support for SoundWire, allocate required resources as
> > > early as possible, and conversely help make the startup() callback
> > > lighter-weight with only hardware register setup.
> > 
> > Okay but can you add details in changelog on what each step would do?
> 
> Sure. Will do.
> 
> > 
> > > @@ -1134,25 +1142,15 @@ static int intel_probe(struct platform_device
> > *pdev)
> > >
> > >  	intel_pdi_ch_update(sdw);
> > >
> > > -	/* Acquire IRQ */
> > > -	ret = request_threaded_irq(sdw->link_res->irq,
> > > -				   sdw_cdns_irq, sdw_cdns_thread,
> > > -				   IRQF_SHARED, KBUILD_MODNAME, &sdw-
> > >cdns);
> > 
> > This is removed here but not added anywhere else, do we have no irq
> > after this patch?
> 
> We use a single irq for all Intel Audio DSP events and it will
> be requested in the SOF driver.

And how will the irq be propagated to sdw/cdns drivers here?

-- 
~Vinod