[alsa-devel] [PATCH 0/7] ASoC: Cleanup AC'97 reset handling

[Takashi Iwai]

On Tue, 21 Jul 2015 21:52:59 +0200,
Lars-Peter Clausen wrote:
> 
> AC'97 devices require that they are properly reset before they can be used.
> Currently ASoC drivers do this by hand each on its own. This lead to many
> similar but slightly different implementations. E.g. Some supporting warm
> reset, some don't. And even though AC'97 do have a device ID which uniquely
> identifies a device most drivers only use the content of register 0 for
> device verification.
> 
> This patch series introduces a new generic helper function in the ALSA
> AC'97 core that can be used to reset a device and verify its ID if
> required. And then converts drivers to use this new helper function instead
> of custom code.
> 
> snd_soc_new_ac97_codec() is extended to be able to perform a reset between
> the allocation and registration of the AC'97 device, this will allow more
> drivers to use it.
> 
> - Lars
> 
> Lars-Peter Clausen (7):
>   ALSA: ac97: Add helper function to reset the AC97 device
>   ASoC: ac97: Add support for resetting device before registration
>   ASoC: ad1980: Use core AC'97 reset helper
>   ASoC: stac9766: Use core reset helper
>   ASoC: wm9705: Use core AC'97 reset helper
>   ASoC: wm9712: Use core AC'97 reset helper
>   ASoC: wm9713: Use core AC'97 reset helper

Feel free to take my ack for all:
  Reviewed-by: Takashi Iwai <tiwai at suse.de>


thanks,

Takashi