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From: Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
To: Qais Yousef <qais.yousef-1AXoQHu6uovQT0dZR+AlfA@public.gmane.org>
Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>,
	Grant Likely
	<grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
	Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org
Subject: Re: [PATCH 03/11] drivers: char: add AXD Audio Processing IP driver
Date: Tue, 28 Oct 2014 22:50:22 +0800	[thread overview]
Message-ID: <20141028145022.GA19843@kroah.com> (raw)
In-Reply-To: <544FA9F7.1020101-1AXoQHu6uovQT0dZR+AlfA@public.gmane.org>

On Tue, Oct 28, 2014 at 02:36:39PM +0000, Qais Yousef wrote:
> On 10/28/2014 02:10 PM, Greg Kroah-Hartman wrote:
> >On Tue, Oct 28, 2014 at 11:26:21AM +0000, Qais Yousef wrote:
> >>AXD is Audio Processing IP by Imagination Technologies that can
> >>perform decoding, encoding, equalisation, resampling, mixing,
> >>synchronisation and audio playback.
> >Isn't that a codec?  Why is this a "char" driver and not one that fits
> >into our existing audio subsystem?
> 
> As far as I understand it doesn't fit into current alsa framework because of
> a number of unsupported features that we need. Specifically the range of
> compressed decoders we support and their configurations and encoding. I
> might have gotten it wrong though so I'll wait to see what alsa people say.

Then add the new features you need and everyone benefits.

Please work with the alsa developers on this, I will not accept anything
until they say there is no way this will work, and they bless a custom
one-off interface like this.

thanks,

greg k-h
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WARNING: multiple messages have this Message-ID (diff)
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Qais Yousef <qais.yousef@imgtec.com>
Cc: linux-kernel@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
	Grant Likely <grant.likely@linaro.org>,
	Rob Herring <robh+dt@kernel.org>,
	devicetree@vger.kernel.org, alsa-devel@alsa-project.org
Subject: Re: [PATCH 03/11] drivers: char: add AXD Audio Processing IP driver
Date: Tue, 28 Oct 2014 22:50:22 +0800	[thread overview]
Message-ID: <20141028145022.GA19843@kroah.com> (raw)
In-Reply-To: <544FA9F7.1020101@imgtec.com>

On Tue, Oct 28, 2014 at 02:36:39PM +0000, Qais Yousef wrote:
> On 10/28/2014 02:10 PM, Greg Kroah-Hartman wrote:
> >On Tue, Oct 28, 2014 at 11:26:21AM +0000, Qais Yousef wrote:
> >>AXD is Audio Processing IP by Imagination Technologies that can
> >>perform decoding, encoding, equalisation, resampling, mixing,
> >>synchronisation and audio playback.
> >Isn't that a codec?  Why is this a "char" driver and not one that fits
> >into our existing audio subsystem?
> 
> As far as I understand it doesn't fit into current alsa framework because of
> a number of unsupported features that we need. Specifically the range of
> compressed decoders we support and their configurations and encoding. I
> might have gotten it wrong though so I'll wait to see what alsa people say.

Then add the new features you need and everyone benefits.

Please work with the alsa developers on this, I will not accept anything
until they say there is no way this will work, and they bless a custom
one-off interface like this.

thanks,

greg k-h

  parent reply	other threads:[~2014-10-28 14:50 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-28 11:26 [PATCH 00/11] Add AXD Audio Processing IP driver Qais Yousef
2014-10-28 11:26 ` Qais Yousef
2014-10-28 11:26 ` [PATCH 01/11] MAINTANERS: Add AXD as a supported driver Qais Yousef
2014-10-28 11:26   ` Qais Yousef
2014-10-29  5:42   ` [alsa-devel] " Vinod Koul
2014-10-28 11:26 ` [PATCH 02/11] dt: bindings: add AXD Audio Processing IP binding document Qais Yousef
2014-10-28 11:26   ` Qais Yousef
2014-10-28 11:26 ` [PATCH 03/11] drivers: char: add AXD Audio Processing IP driver Qais Yousef
2014-10-28 11:26   ` Qais Yousef
2014-10-28 14:10   ` Greg Kroah-Hartman
     [not found]     ` <20141028141038.GA18384-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2014-10-28 14:36       ` Qais Yousef
2014-10-28 14:36         ` Qais Yousef
     [not found]         ` <544FA9F7.1020101-1AXoQHu6uovQT0dZR+AlfA@public.gmane.org>
2014-10-28 14:50           ` Greg Kroah-Hartman [this message]
2014-10-28 14:50             ` Greg Kroah-Hartman
2014-10-29  5:33   ` [alsa-devel] " Vinod Koul
2014-10-28 11:26 ` [PATCH 04/11] drivers: char: axd: add fw binary header manipulation files Qais Yousef
2014-10-28 11:26   ` Qais Yousef
2014-10-28 11:26 ` [PATCH 05/11] drivers: char: axd: add buffers " Qais Yousef
2014-10-28 11:26   ` Qais Yousef
2014-10-28 11:26 ` [PATCH 06/11] drivers: char: axd: add basic files for sending/receiving axd cmds Qais Yousef
2014-10-28 11:26   ` Qais Yousef
2014-10-28 11:26 ` [PATCH 07/11] drivers: char: axd: add cmd interfce helper functions Qais Yousef
2014-10-28 11:26   ` Qais Yousef
2014-10-29  5:38   ` [alsa-devel] " Vinod Koul
2014-10-28 11:26 ` [PATCH 08/11] drivers: char: axd: add low level AXD platform setup files Qais Yousef
2014-10-28 11:26   ` Qais Yousef
2014-10-28 11:26 ` [PATCH 09/11] drivers: char: axd: add sysfs " Qais Yousef
2014-10-28 11:26   ` Qais Yousef
2014-10-28 14:11   ` Greg Kroah-Hartman
2014-10-28 14:38     ` Qais Yousef
2014-10-28 14:38       ` Qais Yousef
2014-10-28 14:12   ` Greg Kroah-Hartman
2014-10-28 14:39     ` Qais Yousef
2014-10-28 14:39       ` Qais Yousef
2014-10-29  5:41   ` [alsa-devel] " Vinod Koul
2014-10-28 11:26 ` [PATCH 10/11] drivers: char: axd: add ts interface file Qais Yousef
2014-10-28 11:26   ` Qais Yousef
2014-10-28 11:26 ` [PATCH 11/11] drivers: char: axd: add Kconfig and Makefile Qais Yousef
2014-10-28 11:26   ` Qais Yousef
2014-10-28 11:55 ` [PATCH 00/11] Add AXD Audio Processing IP driver Clemens Ladisch
2014-10-28 13:18   ` Qais Yousef
2014-10-28 13:18     ` Qais Yousef
     [not found]     ` <544F97A4.7080209-1AXoQHu6uovQT0dZR+AlfA@public.gmane.org>
2014-10-28 14:13       ` Greg Kroah-Hartman
2014-10-28 14:13         ` Greg Kroah-Hartman
2014-10-28 15:05         ` Qais Yousef
2014-10-28 15:05           ` Qais Yousef
2014-10-29  2:50           ` Greg Kroah-Hartman
2014-10-29  5:24             ` [alsa-devel] " Vinod Koul
2014-10-29 10:48               ` Qais Yousef
2014-10-29 10:48                 ` Qais Yousef
2014-10-29  5:20         ` Vinod Koul
2014-10-28 14:54     ` Lars-Peter Clausen
2014-10-28 15:33       ` Qais Yousef
2014-10-28 15:33         ` Qais Yousef
2014-10-28 16:04         ` [alsa-devel] " Lars-Peter Clausen
2014-10-29  5:18     ` Vinod Koul
2014-10-29 15:06     ` Pierre-Louis Bossart
2014-10-28 12:06 ` Lars-Peter Clausen
2014-10-28 13:21   ` Qais Yousef
2014-10-28 13:21     ` Qais Yousef

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