C++ (Cpp) snd_soc_card_get_codec_daiの例

コード例 #1

ファイル: bytcr_rt5651.c プロジェクト: markus-oberhumer/linux

static int platform_clock_control(struct snd_soc_dapm_widget *w,
				  struct snd_kcontrol *k, int  event)
{
	struct snd_soc_dapm_context *dapm = w->dapm;
	struct snd_soc_card *card = dapm->card;
	struct snd_soc_dai *codec_dai;
	struct byt_rt5651_private *priv = snd_soc_card_get_drvdata(card);
	int ret;

	codec_dai = snd_soc_card_get_codec_dai(card, BYT_CODEC_DAI1);
	if (!codec_dai)
		codec_dai = snd_soc_card_get_codec_dai(card, BYT_CODEC_DAI2);
	if (!codec_dai) {
		dev_err(card->dev,
			"Codec dai not found; Unable to set platform clock\n");
		return -EIO;
	}

	if (SND_SOC_DAPM_EVENT_ON(event)) {
		if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) {
			ret = clk_prepare_enable(priv->mclk);
			if (ret < 0) {
				dev_err(card->dev,
					"could not configure MCLK state");
				return ret;
			}
		}
		ret = byt_rt5651_prepare_and_enable_pll1(codec_dai, 48000, 50);
	} else {
		/*
		 * Set codec clock source to internal clock before
		 * turning off the platform clock. Codec needs clock
		 * for Jack detection and button press
		 */
		ret = snd_soc_dai_set_sysclk(codec_dai, RT5651_SCLK_S_RCCLK,
					     48000 * 512,
					     SND_SOC_CLOCK_IN);
		if (!ret)
			if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN)
				clk_disable_unprepare(priv->mclk);
	}

	if (ret < 0) {
		dev_err(card->dev, "can't set codec sysclk: %d\n", ret);
		return ret;
	}

	return 0;
}

コード例 #2

ファイル: cht_bsw_max98090_ti.c プロジェクト: avagin/linux

static int platform_clock_control(struct snd_soc_dapm_widget *w,
					  struct snd_kcontrol *k, int  event)
{
	struct snd_soc_dapm_context *dapm = w->dapm;
	struct snd_soc_card *card = dapm->card;
	struct snd_soc_dai *codec_dai;
	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
	int ret;

	/* See the comment in snd_cht_mc_probe() */
	if (ctx->quirks & QUIRK_PMC_PLT_CLK_0)
		return 0;

	codec_dai = snd_soc_card_get_codec_dai(card, CHT_CODEC_DAI);
	if (!codec_dai) {
		dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
		return -EIO;
	}

	if (SND_SOC_DAPM_EVENT_ON(event)) {
		ret = clk_prepare_enable(ctx->mclk);
		if (ret < 0) {
			dev_err(card->dev,
				"could not configure MCLK state");
			return ret;
		}
	} else {
		clk_disable_unprepare(ctx->mclk);
	}

	return 0;
}

コード例 #3

ファイル: cht_bsw_rt5645.c プロジェクト: AlexShiLucky/linux

static int platform_clock_control(struct snd_soc_dapm_widget *w,
		struct snd_kcontrol *k, int  event)
{
	struct snd_soc_dapm_context *dapm = w->dapm;
	struct snd_soc_card *card = dapm->card;
	struct snd_soc_dai *codec_dai;
	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
	int ret;

	codec_dai = snd_soc_card_get_codec_dai(card, CHT_CODEC_DAI1);
	if (!codec_dai)
		codec_dai = snd_soc_card_get_codec_dai(card, CHT_CODEC_DAI2);

	if (!codec_dai) {
		dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
		return -EIO;
	}

	if (SND_SOC_DAPM_EVENT_ON(event)) {
		ret = clk_prepare_enable(ctx->mclk);
		if (ret < 0) {
			dev_err(card->dev,
				"could not configure MCLK state");
			return ret;
		}
	} else {
		/* Set codec sysclk source to its internal clock because codec PLL will
		 * be off when idle and MCLK will also be off when codec is
		 * runtime suspended. Codec needs clock for jack detection and button
		 * press. MCLK is turned off with clock framework or ACPI.
		 */
		ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_RCCLK,
					48000 * 512, SND_SOC_CLOCK_IN);
		if (ret < 0) {
			dev_err(card->dev, "can't set codec sysclk: %d\n", ret);
			return ret;
		}

		clk_disable_unprepare(ctx->mclk);
	}

	return 0;
}