linux-kernel - Re: [PATCH 1/2] ASoC: rockchip: i2s: add 8 channels capture and lrck-mode support

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Date:	Wed, 7 Oct 2015 18:01:57 +0800
From:	sugar <sugar.zhang@...k-chips.com>
To:	Mark Brown <broonie@...nel.org>
Cc:	alsa-devel@...a-project.org, heiko@...ech.de,
	linux-kernel@...r.kernel.org, lgirdwood@...il.com, tiwai@...e.com,
	linux-rockchip@...ts.infradead.org, perex@...ex.cz,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/2] ASoC: rockchip: i2s: add 8 channels capture and
 lrck-mode support



在 10/7/2015 17:39, Mark Brown 写道:
> On Wed, Oct 07, 2015 at 10:27:14AM +0100, Mark Brown wrote:
>> On Wed, Oct 07, 2015 at 04:01:38PM +0800, sugar wrote:
>
>>> if (dai->symmetric_rates)
>>> 	regmap_update_bits(i2s->regmap, I2S_CKR,
>>>                             I2S_CKR_TRCM_MASK,
>>>                             I2S_CKR_TRCM(val));
>
>> Yes, something like that.  You'll need to check both links in the DAI
>> and the DAI link itself rather than just your own DAI but we should have
>> a helper function for that - I'll add one, look out for a patch shortly.
>
> Actually no, now I look at the code you probably want to just clone the
> check from soc_pcm_apply_symmetry() so have that be:
>
> 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
>
> 	if (rtd->dai_link->symmetrict_rates) {
> 	}
>
> instead.
>

OK, this will be done in patchset v2, thanks.

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