From: Mark Brown <broonie@kernel.org>
To: Richard Fitzgerald <rf@opensource.cirrus.com>
Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
patches@opensource.cirrus.com
Subject: Re: [PATCH] ASoC: cs42l42: Add control for audio slow-start switch
Date: Fri, 29 Oct 2021 18:03:25 +0100 [thread overview]
Message-ID: <YXwpXedltzt1ykfc@sirena.org.uk> (raw)
In-Reply-To: <20211029161305.12714-1-rf@opensource.cirrus.com>
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On Fri, Oct 29, 2021 at 05:13:05PM +0100, Richard Fitzgerald wrote:
> +static int cs42l42_slow_start_put(struct snd_kcontrol *kcontrol,
> + struct snd_ctl_elem_value *ucontrol)
> +{
> + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
> + u8 val;
> +
> + /* all bits of SLOW_START_EN much change together */
> + switch (ucontrol->value.integer.value[0]) {
> + case 0:
> + val = 0;
> + break;
> + case 1:
> + val = CS42L42_SLOW_START_EN_MASK;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + snd_soc_component_update_bits(component, CS42L42_SLOW_START_ENABLE,
> + CS42L42_SLOW_START_EN_MASK, val);
> +
> + return 0;
This should return 1 if the value changed.
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prev parent reply other threads:[~2021-10-29 17:03 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-29 16:13 [PATCH] ASoC: cs42l42: Add control for audio slow-start switch Richard Fitzgerald
2021-10-29 17:03 ` Mark Brown [this message]
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