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From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
To: Greg KH <gregkh@linuxfoundation.org>, Vinod Koul <vkoul@kernel.org>
Cc: alsa-devel@alsa-project.org, tiwai@suse.de,
	linux-kernel@vger.kernel.org, liam.r.girdwood@linux.intel.com,
	broonie@kernel.org, srinivas.kandagatla@linaro.org,
	jank@cadence.com, joe@perches.com,
	Sanyog Kale <sanyog.r.kale@intel.com>
Subject: Re: [alsa-devel] [RFC PATCH 1/7] soundwire: Add sysfs support for master(s)
Date: Tue, 7 May 2019 17:49:48 -0500	[thread overview]
Message-ID: <10fef156-7b01-7a08-77b4-ae3153eaaabc@linux.intel.com> (raw)
In-Reply-To: <20190507111956.GB1092@kroah.com>


>> The model here is that Master device is PCI or Platform device and then
>> creates a bus instance which has soundwire slave devices.
>>
>> So for any attribute on Master device (which has properties as well and
>> representation in sysfs), device specfic struct (PCI/platfrom doesn't
>> help). For slave that is not a problem as sdw_slave structure takes care
>> if that.
>>
>> So, the solution was to create the psedo sdw_master device for the
>> representation and have device-specific structure.
> 
> Ok, much like the "USB host controller" type device.  That's fine, make
> such a device, add it to your bus, and set the type correctly.  And keep
> a pointer to that structure in your device-specific structure if you
> really need to get to anything in it.

humm, you lost me on the last sentence. Did you mean using 
set_drv/platform_data during the init and retrieving the bus information 
with get_drv/platform_data as needed later? Or something else I badly 
need to learn?

  reply	other threads:[~2019-05-07 22:49 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-04  1:00 [RFC PATCH 0/7] soundwire: add sysfs and debugfs support Pierre-Louis Bossart
2019-05-04  1:00 ` [RFC PATCH 1/7] soundwire: Add sysfs support for master(s) Pierre-Louis Bossart
2019-05-04  6:52   ` Greg KH
2019-05-06 16:43     ` [alsa-devel] " Pierre-Louis Bossart
2019-05-07  2:24     ` Pierre-Louis Bossart
2019-05-07  5:27       ` Vinod Koul
2019-05-07  5:54         ` Greg KH
2019-05-07 11:03           ` Vinod Koul
2019-05-07 11:19             ` Greg KH
2019-05-07 22:49               ` Pierre-Louis Bossart [this message]
2019-05-08  7:46                 ` Vinod Koul
2019-05-08  9:16                   ` Greg KH
2019-05-08 16:42                     ` Pierre-Louis Bossart
2019-05-08 16:59                       ` Greg KH
     [not found]                         ` <0b8d5238-6894-e2b4-5522-28636e40dd63@linux.intel.com>
2019-05-09  4:26                           ` Vinod Koul
2019-05-09 18:18                           ` Greg KH
2019-05-04  1:00 ` [RFC PATCH 2/7] soundwire: add Slave sysfs support Pierre-Louis Bossart
2019-05-04  6:54   ` Greg KH
2019-05-06 14:42     ` [alsa-devel] " Pierre-Louis Bossart
2019-05-06 15:19       ` Greg KH
2019-05-06 16:22         ` Vinod Koul
2019-05-06 16:46           ` Pierre-Louis Bossart
2019-05-07  5:19             ` Vinod Koul
2019-05-07 13:54               ` Pierre-Louis Bossart
2019-05-08  7:40                 ` Vinod Koul
2019-05-08 16:51                   ` Pierre-Louis Bossart
2019-05-04  1:00 ` [RFC PATCH 3/7] ABI: testing: Add description of soundwire master sysfs files Pierre-Louis Bossart
2019-05-04  6:53   ` Greg KH
2019-05-06 16:24   ` Vinod Koul
2019-05-04  1:00 ` [RFC PATCH 4/7] ABI: testing: Add description of soundwire slave " Pierre-Louis Bossart
2019-05-04  1:00 ` [RFC PATCH 5/7] soundwire: add debugfs support Pierre-Louis Bossart
2019-05-04  7:03   ` Greg KH
2019-05-06 14:48     ` [alsa-devel] " Pierre-Louis Bossart
2019-05-06 16:38       ` Vinod Koul
2019-05-06 16:54         ` Pierre-Louis Bossart
2019-05-07  5:56         ` Greg KH
2019-05-04  1:00 ` [RFC PATCH 6/7] soundwire: cadence_master: add debugfs register dump Pierre-Louis Bossart
2019-05-04  7:03   ` Greg KH
2019-05-06 14:50     ` [alsa-devel] " Pierre-Louis Bossart
2019-05-04  7:04   ` Greg KH
2019-05-04  1:00 ` [RFC PATCH 7/7] soundwire: intel: " Pierre-Louis Bossart
2019-05-04  7:04   ` Greg KH
2019-05-06 14:51     ` [alsa-devel] " Pierre-Louis Bossart

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