1 files changed, 123 insertions, 0 deletions
diff --git a/sound/soc/mediatek/mt6797/mt6797-afe-clk.c b/sound/soc/mediatek/mt6797/mt6797-afe-clk.c
new file mode 100644
index 0000000000000..6f3e6acfcfab2
--- /dev/null
+++ b/sound/soc/mediatek/mt6797/mt6797-afe-clk.c
@@ -0,0 +1,123 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// mt6797-afe-clk.c  --  Mediatek 6797 afe clock ctrl
+//
+// Copyright (c) 2018 MediaTek Inc.
+// Author: KaiChieh Chuang <kaichieh.chuang@mediatek.com>
+
+#include <linux/clk.h>
+
+#include "mt6797-afe-common.h"
+#include "mt6797-afe-clk.h"
+
+enum {
+	CLK_INFRA_SYS_AUD,
+	CLK_INFRA_SYS_AUD_26M,
+	CLK_TOP_MUX_AUD,
+	CLK_TOP_MUX_AUD_BUS,
+	CLK_TOP_SYSPLL3_D4,
+	CLK_TOP_SYSPLL1_D4,
+	CLK_CLK26M,
+	CLK_NUM
+};
+
+static const char *aud_clks[CLK_NUM] = {
+	[CLK_INFRA_SYS_AUD] = "infra_sys_audio_clk",
+	[CLK_INFRA_SYS_AUD_26M] = "infra_sys_audio_26m",
+	[CLK_TOP_MUX_AUD] = "top_mux_audio",
+	[CLK_TOP_MUX_AUD_BUS] = "top_mux_aud_intbus",
+	[CLK_TOP_SYSPLL3_D4] = "top_sys_pll3_d4",
+	[CLK_TOP_SYSPLL1_D4] = "top_sys_pll1_d4",
+	[CLK_CLK26M] = "top_clk26m_clk",
+};
+
+int mt6797_init_clock(struct mtk_base_afe *afe)
+{
+	struct mt6797_afe_private *afe_priv = afe->platform_priv;
+	int i;
+
+	afe_priv->clk = devm_kcalloc(afe->dev, CLK_NUM, sizeof(*afe_priv->clk),
+				     GFP_KERNEL);
+	if (!afe_priv->clk)
+		return -ENOMEM;
+
+	for (i = 0; i < CLK_NUM; i++) {
+		afe_priv->clk[i] = devm_clk_get(afe->dev, aud_clks[i]);
+		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;
+}