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From: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
To: Mauro Carvalho Chehab <m.chehab@samsung.com>
Cc: shuah.kh@samsung.com, Greg KH <gregkh@linuxfoundation.org>,
	tj@kernel.org, rafael.j.wysocki@intel.com, linux@roeck-us.net,
	toshi.kani@hp.com, linux-kernel@vger.kernel.org,
	linux-media@vger.kernel.org, shuahkhan@gmail.com
Subject: Re: [RFC PATCH 0/2] managed token devres interfaces
Date: Thu, 10 Apr 2014 12:46:53 +0100	[thread overview]
Message-ID: <20140410124653.64aeb06d@alan.etchedpixels.co.uk> (raw)
In-Reply-To: <20140410083841.488f9c43@samsung.com>

> For example, some devices provide standard USB Audio Class, handled by
> snd-usb-audio for the audio stream, while the video stream is handled
> via a separate driver, like some em28xx devices.

Which is what mfd is designed to handle.

> There are even more complex devices that provide 3G modem, storage
> and digital TV, whose USB ID changes when either the 3G modem starts
> or when the digital TV firmware is loaded.

But presumably you only have one driver at a time then ?

> So, we need to find a way to lock some hardware resources among
> different subsystems that don't share anything in common. Not sure if
> mfd has the same type of problem of a non-mfd driver using another
> function of the same device

The MFD device provides subdevices for all the functions. That is the
whole underlying concept.


  reply	other threads:[~2014-04-10 11:47 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-04-09 15:21 [RFC PATCH 0/2] managed token devres interfaces Shuah Khan
2014-04-09 15:21 ` [RFC PATCH 1/2] drivers/base: add new devres_update() interface to devres_* Shuah Khan
2014-04-09 15:21 ` [RFC PATCH 2/2] drivers/base: add managed token devres interfaces Shuah Khan
2014-04-16 21:58   ` Tejun Heo
2014-04-17 20:01     ` Shuah Khan
2014-04-17 20:10       ` Tejun Heo
2014-04-17 20:22         ` Tejun Heo
2014-04-17 23:27           ` Shuah Khan
2014-04-17 20:50         ` Shuah Khan
2014-04-09 19:17 ` [RFC PATCH 0/2] " Greg KH
2014-04-09 22:44   ` Shuah Khan
2014-04-10 11:04     ` One Thousand Gnomes
2014-04-10 11:38       ` Mauro Carvalho Chehab
2014-04-10 11:46         ` One Thousand Gnomes [this message]
2014-04-10 14:39           ` Mauro Carvalho Chehab
2014-04-11 20:28             ` Shuah Khan
2014-04-14 22:48             ` Shuah Khan
2014-04-10 14:32         ` Shuah Khan

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