From: Greg KH <gregkh@linuxfoundation.org>
To: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
tiwai@suse.de, broonie@kernel.org, vkoul@kernel.org,
jank@cadence.com, srinivas.kandagatla@linaro.org,
slawomir.blauciak@intel.com,
Bard liao <yung-chuan.liao@linux.intel.com>,
Rander Wang <rander.wang@linux.intel.com>,
Ranjani Sridharan <ranjani.sridharan@linux.intel.com>,
Sanyog Kale <sanyog.r.kale@intel.com>
Subject: Re: [alsa-devel] [PATCH v4 06/15] soundwire: add support for sdw_slave_type
Date: Fri, 13 Dec 2019 17:12:18 +0100 [thread overview]
Message-ID: <20191213161218.GC2653074@kroah.com> (raw)
In-Reply-To: <41d1fcbc-47b7-bbee-5b55-759cbb5f5a7b@linux.intel.com>
On Fri, Dec 13, 2019 at 09:05:37AM -0600, Pierre-Louis Bossart wrote:
> On 12/13/19 1:21 AM, Greg KH wrote:
> > On Thu, Dec 12, 2019 at 11:04:00PM -0600, Pierre-Louis Bossart wrote:
> > > Currently the bus does not have any explicit support for master
> > > devices.
> > >
> > > First add explicit support for sdw_slave_type and error checks if this type
> > > is not set.
> > >
> > > In follow-up patches we can add support for the sdw_md_type (md==Master
> > > Device), following the Grey Bus example.
> >
> > How are you using greybus as an example of "master devices"? All you
> > are doing here is setting the type of the existing devices, right?
>
> I took your advice to look at GreyBus and used the 'gb host device' as the
> model to implement the 'sdw master' add/startup/remove interfaces we needed.
>
> so yes in this patch we just add a type for the slave, the interesting part
> is in the next patches.
Is that what a "master" device really is? A host controller, like a USB
host controller? Or something else?
I thought things were a bit more complex for this type of topology.
greg k-h
next prev parent reply other threads:[~2019-12-13 21:49 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-13 5:03 [PATCH v4 00/15] soundwire: intel: implement new ASoC interfaces Pierre-Louis Bossart
2019-12-13 5:03 ` [PATCH v4 01/15] soundwire: renames to prepare support for master drivers/devices Pierre-Louis Bossart
2019-12-13 5:03 ` [PATCH v4 02/15] soundwire: rename dev_to_sdw_dev macro Pierre-Louis Bossart
2019-12-13 5:03 ` [PATCH v4 03/15] soundwire: rename drv_to_sdw_slave_driver macro Pierre-Louis Bossart
2019-12-13 5:03 ` [PATCH v4 04/15] soundwire: bus_type: rename sdw_drv_ to sdw_slave_drv Pierre-Louis Bossart
2019-12-13 5:03 ` [PATCH v4 05/15] soundwire: intel: rename res field as link_res Pierre-Louis Bossart
2019-12-13 5:04 ` [PATCH v4 06/15] soundwire: add support for sdw_slave_type Pierre-Louis Bossart
2019-12-13 7:21 ` Greg KH
2019-12-13 15:05 ` [alsa-devel] " Pierre-Louis Bossart
2019-12-13 16:12 ` Greg KH [this message]
2019-12-13 22:14 ` Pierre-Louis Bossart
2019-12-13 5:04 ` [PATCH v4 07/15] soundwire: slave: move uevent handling to slave Pierre-Louis Bossart
2019-12-13 7:22 ` Greg KH
2019-12-13 15:11 ` [alsa-devel] " Pierre-Louis Bossart
2019-12-13 16:11 ` Greg KH
2019-12-13 22:15 ` Pierre-Louis Bossart
2019-12-13 5:04 ` [PATCH v4 08/15] soundwire: add initial definitions for sdw_master_device Pierre-Louis Bossart
2019-12-13 7:28 ` Greg KH
2019-12-13 15:49 ` Pierre-Louis Bossart
2019-12-13 16:10 ` Greg KH
2019-12-13 22:15 ` [alsa-devel] " Pierre-Louis Bossart
2019-12-16 22:34 ` Pierre-Louis Bossart
2019-12-13 23:25 ` Pierre-Louis Bossart
2019-12-14 8:27 ` Greg KH
2019-12-16 15:02 ` Pierre-Louis Bossart
2019-12-16 16:25 ` Greg KH
2019-12-16 17:07 ` Pierre-Louis Bossart
2019-12-13 5:04 ` [PATCH v4 09/15] soundwire: intel: remove platform devices and provide new interface Pierre-Louis Bossart
2019-12-13 5:04 ` [PATCH v4 10/15] soundwire: register master device driver Pierre-Louis Bossart
2019-12-13 5:04 ` [PATCH v4 11/15] soundwire: intel: add prepare support in sdw dai driver Pierre-Louis Bossart
2019-12-13 5:04 ` [PATCH v4 12/15] soundwire: intel: add trigger " Pierre-Louis Bossart
2019-12-13 5:04 ` [PATCH v4 13/15] soundwire: intel: add sdw_stream_setup helper for .startup callback Pierre-Louis Bossart
2019-12-13 5:04 ` [PATCH v4 14/15] soundwire: intel: free all resources on hw_free() Pierre-Louis Bossart
2019-12-13 5:04 ` [PATCH v4 15/15] soundwire: intel_init: add implementation of sdw_intel_enable_irq() Pierre-Louis Bossart
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