From mboxrd@z Thu Jan 1 00:00:00 1970 From: Codrin Ciubotariu Subject: Re: [PATCH 1/2] ASoC: Add driver for PROTO Audio CODEC (with a WM8731) Date: Wed, 29 Aug 2018 18:33:19 +0300 Message-ID: <54d79485-81ef-763a-c896-c6ab3e33b5d1@microchip.com> References: <20180829144727.13757-1-codrin.ciubotariu@microchip.com> <20180829144727.13757-2-codrin.ciubotariu@microchip.com> <20180829145355.GD27808@sirena.org.uk> <8f1ecff2-aab7-2a1d-a8d3-8d0062a8a9e0@microchip.com> Mime-Version: 1.0 Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <8f1ecff2-aab7-2a1d-a8d3-8d0062a8a9e0@microchip.com> Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org To: Mark Brown Cc: alsa-devel@alsa-project.org, devicetree@vger.kernel.org, robh+dt@kernel.org, alexandre.belloni@bootlin.com, nicolas.ferre@microchip.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, florian.meier@koalo.de, cristian.birsan@microchip.com List-Id: devicetree@vger.kernel.org On 29.08.2018 18:20, Codrin Ciubotariu wrote: > On 29.08.2018 17:53, Mark Brown wrote: >> On Wed, Aug 29, 2018 at 05:47:26PM +0300, Codrin Ciubotariu wrote: >> >>> +static const unsigned int wm8731_rates_12288000[] = { >>> +    8000, 32000, 48000, 96000, >>> +}; >>> + >>> +static struct snd_pcm_hw_constraint_list wm8731_constraints_12288000 >>> = { >>> +    .list = wm8731_rates_12288000, >>> +    .count = ARRAY_SIZE(wm8731_rates_12288000), >>> +}; >>> + >>> +static int snd_proto_startup(struct snd_pcm_substream *substream) >>> +{ >>> +    /* Setup constraints, because there is a 12.288 MHz XTAL on the >>> board */ >>> +    snd_pcm_hw_constraint_list(substream->runtime, 0, >>> +                   SNDRV_PCM_HW_PARAM_RATE, >>> +                   &wm8731_constraints_12288000); >>> +    return 0; >>> +} >> >> This bit is better added to the CODEC driver since it'll apply to any >> system where there's this clock rate (someone else could come in and add >> other rates, no need to do that yourself though it'd be nice of course). > > I could do it. It looks like these constraints are already in the wm8731 driver. I will wait for more comments and then I will send a v2 without this part. Thanks and best regards, Codrin