Re: [PATCH 1/2] soundwire: add definition for maximum number of ports

[Vinod Koul <vkoul@kernel.org>]

On 18-08-20, 06:53, Liao, Bard wrote:
> > -----Original Message-----
> > From: Vinod Koul <vkoul@kernel.org>
> > Sent: Tuesday, August 18, 2020 2:36 PM
> > To: Bard Liao <yung-chuan.liao@linux.intel.com>
> > Cc: alsa-devel@alsa-project.org; linux-kernel@vger.kernel.org; tiwai@suse.de;
> > broonie@kernel.org; gregkh@linuxfoundation.org; jank@cadence.com;
> > srinivas.kandagatla@linaro.org; rander.wang@linux.intel.com;
> > ranjani.sridharan@linux.intel.com; hui.wang@canonical.com; pierre-
> > louis.bossart@linux.intel.com; Kale, Sanyog R <sanyog.r.kale@intel.com>; Lin,
> > Mengdong <mengdong.lin@intel.com>; Liao, Bard <bard.liao@intel.com>
> > Subject: Re: [PATCH 1/2] soundwire: add definition for maximum number of
> > ports
> > 
> > On 18-08-20, 01:47, Bard Liao wrote:
> > > From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
> > >
> > > A Device may have at most 15 physical ports (DP0, DP1..DP14).
> > >
> > > Signed-off-by: Pierre-Louis Bossart
> > > <pierre-louis.bossart@linux.intel.com>
> > > Reviewed-by: Rander Wang <rander.wang@linux.intel.com>
> > > Reviewed-by: Guennadi Liakhovetski
> > > <guennadi.liakhovetski@linux.intel.com>
> > > Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
> > > ---
> > >  include/linux/soundwire/sdw.h | 3 ++-
> > >  1 file changed, 2 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/include/linux/soundwire/sdw.h
> > > b/include/linux/soundwire/sdw.h index 76052f12c9f7..0aa4c6af7554
> > > 100644
> > > --- a/include/linux/soundwire/sdw.h
> > > +++ b/include/linux/soundwire/sdw.h
> > > @@ -38,7 +38,8 @@ struct sdw_slave;
> > >  #define SDW_FRAME_CTRL_BITS		48
> > >  #define SDW_MAX_DEVICES			11
> > >
> > > -#define SDW_VALID_PORT_RANGE(n)		((n) <= 14 && (n) >= 1)
> > > +#define SDW_MAX_PORTS			15
> > > +#define SDW_VALID_PORT_RANGE(n)		((n) <
> > SDW_MAX_PORTS && (n) >= 1)
> > 
> > What is the use of this one if we are allocating all ports always, Also, I dont
> > see it used in second patch?
> 
> It is used in drivers/soundwire/stream.c and drivers/soundwire/debugfs.c.

Ah overlooked that it is modified, pls ignore this comment

-- 
~Vinod