From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Clemens Ladisch <clemens@ladisch.de>
Cc: Peter Hsiang <Peter.Hsiang@maxim-ic.com>,
"alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>
Subject: Re: user space control app driver interface for sound soc
Date: Fri, 1 Oct 2010 00:12:34 -0700 [thread overview]
Message-ID: <20101001071233.GB20529@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <4CA58619.2090408@ladisch.de>
On Fri, Oct 01, 2010 at 08:56:25AM +0200, Clemens Ladisch wrote:
> If the firmware isn't needed when initialzing the device, you can add
> some ioctl that makes the driver call request_firmware() (this basically
> assumes that the data is stored in a file with a known name), or just
> add some device that allows userspace to write data to the device (use
> this for dynamic data).
This does rather depend on what the firmware does and why it needs to be
reloaded - it is very rare that one can just blindly reload the firmware
and frequently changing the firmware will affect the set of user tunable
features that can be offered to the application layer. Joining
everything up in a way that avoids fragility typically means that the
driver will end up initiating all the requests based on higher level
requests from audio applications.
next prev parent reply other threads:[~2010-10-01 7:12 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-29 2:34 [PATCH] ASoC: Add max98088 CODEC driver Peter Hsiang
2010-09-29 2:34 ` Peter Hsiang
2010-09-29 3:37 ` Mark Brown
2010-09-29 3:37 ` Mark Brown
2010-09-29 21:42 ` Peter Hsiang
2010-09-29 21:42 ` Peter Hsiang
2010-09-29 22:18 ` Mark Brown
2010-09-29 22:18 ` Mark Brown
2010-09-30 0:52 ` Peter Hsiang
2010-09-30 0:58 ` Mark Brown
2010-09-30 0:58 ` Mark Brown
2010-09-30 1:20 ` Peter Hsiang
2010-09-30 17:23 ` user space control app driver interface for sound soc Peter Hsiang
2010-09-30 20:31 ` Mark Brown
2010-09-30 21:55 ` Peter Hsiang
2010-09-30 22:09 ` Mark Brown
2010-09-30 23:10 ` Peter Hsiang
2010-09-30 23:34 ` Mark Brown
2010-10-01 1:56 ` Peter Hsiang
2010-10-01 2:37 ` Mark Brown
2010-10-01 6:56 ` Clemens Ladisch
2010-10-01 7:12 ` Mark Brown [this message]
2010-10-01 13:42 ` Takashi Iwai
2010-10-01 17:35 ` Mark Brown
2010-10-01 21:57 ` Peter Hsiang
2010-10-03 9:09 ` Takashi Iwai
2010-10-13 1:20 ` [PATCH] ASoC: Add max98088 CODEC driver Peter Hsiang
2010-10-13 1:47 ` Joe Perches
2010-10-13 8:24 ` Mark Brown
2010-10-13 8:24 ` Mark Brown
2010-10-13 12:10 ` [PATCH] sound/soc: rename vol to volatile_register as appropriate Joe Perches
2010-10-13 12:33 ` Mark Brown
2010-10-13 12:33 ` Mark Brown
2010-10-13 12:55 ` Joe Perches
2010-10-13 15:11 ` Mark Brown
2010-10-13 15:11 ` Mark Brown
2010-10-13 15:27 ` Joe Perches
2010-10-13 15:29 ` Mark Brown
2010-10-13 15:29 ` Mark Brown
2010-10-13 15:35 ` Joe Perches
2010-10-13 19:10 ` [RFC PATCH] sound/soc/codecs/wm8962.c: Use register index, save 100kb text Joe Perches
2010-10-13 19:40 ` Mark Brown
2010-10-13 19:40 ` Mark Brown
2010-10-13 20:06 ` Joe Perches
2010-10-13 20:29 ` Mark Brown
2010-10-13 20:29 ` Mark Brown
2010-10-13 15:19 ` [PATCH] sound/soc/codecs/wm8994.c: Remove unused vol Joe Perches
2010-10-15 10:08 ` Liam Girdwood
2010-10-15 10:08 ` Liam Girdwood
2010-10-15 10:39 ` Mark Brown
2010-10-15 10:39 ` Mark Brown
2010-10-13 10:32 ` [PATCH] ASoC: Add max98088 CODEC driver Mark Brown
2010-10-13 10:32 ` Mark Brown
2010-10-14 3:18 ` Peter Hsiang
2010-10-14 3:18 ` Peter Hsiang
2010-10-14 3:30 ` Peter Hsiang
2010-10-15 10:04 ` Liam Girdwood
2010-10-15 10:04 ` Liam Girdwood
2010-10-15 10:55 ` Mark Brown
2010-10-15 10:55 ` Mark Brown
2010-10-15 17:23 ` Peter Hsiang
2010-10-15 17:23 ` Peter Hsiang
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