linux-kernel - Re: [PATCH v2 1/5] sound: sam9x5_wm8731: machine driver for at91sam9x5 wm8731 boards

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Date:	Tue, 9 Jul 2013 10:19:45 +0200
From:	Richard Genoud <richard.genoud@...il.com>
To:	Mark Brown <broonie@...nel.org>
Cc:	Nicolas Ferre <nicolas.ferre@...el.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Bo Shen <voice.shen@...el.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	alsa-devel@...a-project.org, devicetree-discuss@...ts.ozlabs.org,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
Subject: Re: [PATCH v2 1/5] sound: sam9x5_wm8731: machine driver for
 at91sam9x5 wm8731 boards

2013/7/8 Mark Brown <broonie@...nel.org>:
> On Mon, Jul 08, 2013 at 03:29:49PM +0200, Richard Genoud wrote:
>
>> + *             Nicolas Ferre <nicolas.ferre@...el.com>
>> + *
>> + * Based on sam9g20_wm8731.c by:
>> + * Sedji Gaouaou <sedji.gaouaou@...el.com>
>
> The obvious question here is of course if we can use the same driver for
> both of them.
I haven't got a g20 to test that, but that's the goal.
For now, g20 is still non-DT, so I think it's best to have a DT-only
driver like this one for the 9x5 family (9g15, 9g25, 9x25, 9g35,
9x25).
When the g20 will move to DT completely, we can drop sam9g20_wm8731.c
and adjust sam9x5_wm8731.c (mainly master clock and widgets it seems)
By the way, maybe g45 could use that also (and SAMA5 ?)

>
>> +     codec_dai->driver->playback.rates &= SNDRV_PCM_RATE_8000 |
>> +             SNDRV_PCM_RATE_32000 |
>> +             SNDRV_PCM_RATE_48000 |
>> +             SNDRV_PCM_RATE_96000;
>> +     codec_dai->driver->capture.rates &= SNDRV_PCM_RATE_8000 |
>> +             SNDRV_PCM_RATE_32000 |
>> +             SNDRV_PCM_RATE_48000 |
>> +             SNDRV_PCM_RATE_96000;
>
> You definitely shouldn't be fiddling with a driver's constant static
> data.  You want to be using snd_pcm_hw_constraint() APIs to set
> additional constraints intead.
Ok, I'll change that.


Thanks !

-- 
for me, ck means con kolivas and not calvin klein... does it mean I'm a geek ?
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