sound/soc/mediatek/mt6797/mt6797-afe-clk.c

Source file repositories/reference/linux-study-clean/sound/soc/mediatek/mt6797/mt6797-afe-clk.c

File Facts

System
Linux kernel
Corpus path
sound/soc/mediatek/mt6797/mt6797-afe-clk.c
Extension
.c
Size
3333 bytes
Lines
124
Domain
Driver Families
Bucket
sound/soc
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (IS_ERR(afe_priv->clk[i])) {
			dev_err(afe->dev, "%s(), devm_clk_get %s fail, ret %ld\n",
				__func__, aud_clks[i],
				PTR_ERR(afe_priv->clk[i]));
			return PTR_ERR(afe_priv->clk[i]);
		}
	}

	return 0;
}

int mt6797_afe_enable_clock(struct mtk_base_afe *afe)
{
	struct mt6797_afe_private *afe_priv = afe->platform_priv;
	int ret;

	ret = clk_prepare_enable(afe_priv->clk[CLK_INFRA_SYS_AUD]);
	if (ret) {
		dev_err(afe->dev, "%s(), clk_prepare_enable %s fail %d\n",
			__func__, aud_clks[CLK_INFRA_SYS_AUD], ret);
		goto CLK_INFRA_SYS_AUDIO_ERR;
	}

	ret = clk_prepare_enable(afe_priv->clk[CLK_INFRA_SYS_AUD_26M]);
	if (ret) {
		dev_err(afe->dev, "%s(), clk_prepare_enable %s fail %d\n",
			__func__, aud_clks[CLK_INFRA_SYS_AUD_26M], ret);
		goto CLK_INFRA_SYS_AUD_26M_ERR;
	}

	ret = clk_prepare_enable(afe_priv->clk[CLK_TOP_MUX_AUD]);
	if (ret) {
		dev_err(afe->dev, "%s(), clk_prepare_enable %s fail %d\n",
			__func__, aud_clks[CLK_TOP_MUX_AUD], ret);
		goto CLK_MUX_AUDIO_ERR;
	}

	ret = clk_set_parent(afe_priv->clk[CLK_TOP_MUX_AUD],
			     afe_priv->clk[CLK_CLK26M]);
	if (ret) {
		dev_err(afe->dev, "%s(), clk_set_parent %s-%s fail %d\n",
			__func__, aud_clks[CLK_TOP_MUX_AUD],
			aud_clks[CLK_CLK26M], ret);
		goto CLK_MUX_AUDIO_ERR;
	}

	ret = clk_prepare_enable(afe_priv->clk[CLK_TOP_MUX_AUD_BUS]);
	if (ret) {
		dev_err(afe->dev, "%s(), clk_prepare_enable %s fail %d\n",
			__func__, aud_clks[CLK_TOP_MUX_AUD_BUS], ret);
		goto CLK_MUX_AUDIO_INTBUS_ERR;
	}

	return ret;

CLK_MUX_AUDIO_INTBUS_ERR:
	clk_disable_unprepare(afe_priv->clk[CLK_TOP_MUX_AUD_BUS]);
CLK_MUX_AUDIO_ERR:
	clk_disable_unprepare(afe_priv->clk[CLK_TOP_MUX_AUD]);
CLK_INFRA_SYS_AUD_26M_ERR:
	clk_disable_unprepare(afe_priv->clk[CLK_INFRA_SYS_AUD_26M]);
CLK_INFRA_SYS_AUDIO_ERR:
	clk_disable_unprepare(afe_priv->clk[CLK_INFRA_SYS_AUD]);

	return 0;
}

int mt6797_afe_disable_clock(struct mtk_base_afe *afe)
{
	struct mt6797_afe_private *afe_priv = afe->platform_priv;

	clk_disable_unprepare(afe_priv->clk[CLK_TOP_MUX_AUD_BUS]);
	clk_disable_unprepare(afe_priv->clk[CLK_TOP_MUX_AUD]);
	clk_disable_unprepare(afe_priv->clk[CLK_INFRA_SYS_AUD_26M]);
	clk_disable_unprepare(afe_priv->clk[CLK_INFRA_SYS_AUD]);

	return 0;
}

Annotation

Implementation Notes