diff mbox series

[v4,05/16] SoC: mediatek: mt8365: support audio clock control

Message ID 20240226-audio-i350-v4-5-082b22186d4c@baylibre.com (mailing list archive)
State New
Headers show
Series Add audio support for the MediaTek Genio 350-evk board | expand

Commit Message

Alexandre Mergnat April 26, 2024, 5:22 p.m. UTC 
Add audio clock wrapper and audio tuner control.

Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 sound/soc/mediatek/mt8365/mt8365-afe-clk.c | 443 +++++++++++++++++++++++++++++
 sound/soc/mediatek/mt8365/mt8365-afe-clk.h |  49 ++++
 2 files changed, 492 insertions(+)

Comments

Mark Brown April 29, 2024, 2:44 p.m. UTC | #1 
On Fri, Apr 26, 2024 at 07:22:34PM +0200, Alexandre Mergnat wrote:
> Add audio clock wrapper and audio tuner control.

Please submit patches using subject lines reflecting the style for the
subsystem, this makes it easier for people to identify relevant patches.
Look at what existing commits in the area you're changing are doing and
make sure your subject lines visually resemble what they're doing.
There's no need to resubmit to fix this alone.
diff mbox series

Patch

diff --git a/sound/soc/mediatek/mt8365/mt8365-afe-clk.c b/sound/soc/mediatek/mt8365/mt8365-afe-clk.c
new file mode 100644
index 000000000000..3a525dae857c
--- /dev/null
+++ b/sound/soc/mediatek/mt8365/mt8365-afe-clk.c
@@ -0,0 +1,443 @@ 
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Mediatek 8365 AFE clock control
+ *
+ * Copyright (c) 2024 MediaTek Inc.
+ * Authors: Jia Zeng <jia.zeng@mediatek.com>
+ *          Alexandre Mergnat <amergnat@baylibre.com>
+ */
+
+#include "mt8365-afe-clk.h"
+#include "mt8365-afe-common.h"
+#include "mt8365-reg.h"
+#include "../common/mtk-base-afe.h"
+#include <linux/device.h>
+#include <linux/mfd/syscon.h>
+
+static const char *aud_clks[MT8365_CLK_NUM] = {
+	[MT8365_CLK_TOP_AUD_SEL] = "top_audio_sel",
+	[MT8365_CLK_AUD_I2S0_M] = "audio_i2s0_m",
+	[MT8365_CLK_AUD_I2S1_M] = "audio_i2s1_m",
+	[MT8365_CLK_AUD_I2S2_M] = "audio_i2s2_m",
+	[MT8365_CLK_AUD_I2S3_M] = "audio_i2s3_m",
+	[MT8365_CLK_ENGEN1] = "engen1",
+	[MT8365_CLK_ENGEN2] = "engen2",
+	[MT8365_CLK_AUD1] = "aud1",
+	[MT8365_CLK_AUD2] = "aud2",
+	[MT8365_CLK_I2S0_M_SEL] = "i2s0_m_sel",
+	[MT8365_CLK_I2S1_M_SEL] = "i2s1_m_sel",
+	[MT8365_CLK_I2S2_M_SEL] = "i2s2_m_sel",
+	[MT8365_CLK_I2S3_M_SEL] = "i2s3_m_sel",
+	[MT8365_CLK_CLK26M] = "top_clk26m_clk",
+};
+
+int mt8365_afe_init_audio_clk(struct mtk_base_afe *afe)
+{
+	size_t i;
+	struct mt8365_afe_private *afe_priv = afe->platform_priv;
+
+	for (i = 0; i < ARRAY_SIZE(aud_clks); i++) {
+		afe_priv->clocks[i] = devm_clk_get(afe->dev, aud_clks[i]);
+		if (IS_ERR(afe_priv->clocks[i])) {
+			dev_err(afe->dev, "%s devm_clk_get %s fail\n",
+				__func__, aud_clks[i]);
+			return PTR_ERR(afe_priv->clocks[i]);
+		}
+	}
+	return 0;
+}
+
+int mt8365_afe_enable_clk(struct mtk_base_afe *afe, struct clk *clk)
+{
+	int ret;
+
+	if (clk) {
+		ret = clk_prepare_enable(clk);
+		if (ret) {
+			dev_err(afe->dev, "Failed to enable clk\n");
+			return ret;
+		}
+	}
+	return 0;
+}
+
+void mt8365_afe_disable_clk(struct mtk_base_afe *afe, struct clk *clk)
+{
+	if (clk)
+		clk_disable_unprepare(clk);
+}
+
+int mt8365_afe_set_clk_rate(struct mtk_base_afe *afe, struct clk *clk,
+			    unsigned int rate)
+{
+	int ret;
+
+	if (clk) {
+		ret = clk_set_rate(clk, rate);
+		if (ret) {
+			dev_err(afe->dev, "Failed to set rate\n");
+			return ret;
+		}
+	}
+	return 0;
+}
+
+int mt8365_afe_set_clk_parent(struct mtk_base_afe *afe, struct clk *clk,
+			      struct clk *parent)
+{
+	int ret;
+
+	if (clk && parent) {
+		ret = clk_set_parent(clk, parent);
+		if (ret) {
+			dev_err(afe->dev, "Failed to set parent\n");
+			return ret;
+		}
+	}
+	return 0;
+}
+
+static unsigned int get_top_cg_reg(unsigned int cg_type)
+{
+	switch (cg_type) {
+	case MT8365_TOP_CG_AFE:
+	case MT8365_TOP_CG_I2S_IN:
+	case MT8365_TOP_CG_22M:
+	case MT8365_TOP_CG_24M:
+	case MT8365_TOP_CG_INTDIR_CK:
+	case MT8365_TOP_CG_APLL2_TUNER:
+	case MT8365_TOP_CG_APLL_TUNER:
+	case MT8365_TOP_CG_SPDIF:
+	case MT8365_TOP_CG_TDM_OUT:
+	case MT8365_TOP_CG_TDM_IN:
+	case MT8365_TOP_CG_ADC:
+	case MT8365_TOP_CG_DAC:
+	case MT8365_TOP_CG_DAC_PREDIS:
+	case MT8365_TOP_CG_TML:
+		return AUDIO_TOP_CON0;
+	case MT8365_TOP_CG_I2S1_BCLK:
+	case MT8365_TOP_CG_I2S2_BCLK:
+	case MT8365_TOP_CG_I2S3_BCLK:
+	case MT8365_TOP_CG_I2S4_BCLK:
+	case MT8365_TOP_CG_DMIC0_ADC:
+	case MT8365_TOP_CG_DMIC1_ADC:
+	case MT8365_TOP_CG_DMIC2_ADC:
+	case MT8365_TOP_CG_DMIC3_ADC:
+	case MT8365_TOP_CG_CONNSYS_I2S_ASRC:
+	case MT8365_TOP_CG_GENERAL1_ASRC:
+	case MT8365_TOP_CG_GENERAL2_ASRC:
+	case MT8365_TOP_CG_TDM_ASRC:
+		return AUDIO_TOP_CON1;
+	default:
+		return 0;
+	}
+}
+
+static unsigned int get_top_cg_mask(unsigned int cg_type)
+{
+	switch (cg_type) {
+	case MT8365_TOP_CG_AFE:
+		return AUD_TCON0_PDN_AFE;
+	case MT8365_TOP_CG_I2S_IN:
+		return AUD_TCON0_PDN_I2S_IN;
+	case MT8365_TOP_CG_22M:
+		return AUD_TCON0_PDN_22M;
+	case MT8365_TOP_CG_24M:
+		return AUD_TCON0_PDN_24M;
+	case MT8365_TOP_CG_INTDIR_CK:
+		return AUD_TCON0_PDN_INTDIR;
+	case MT8365_TOP_CG_APLL2_TUNER:
+		return AUD_TCON0_PDN_APLL2_TUNER;
+	case MT8365_TOP_CG_APLL_TUNER:
+		return AUD_TCON0_PDN_APLL_TUNER;
+	case MT8365_TOP_CG_SPDIF:
+		return AUD_TCON0_PDN_SPDIF;
+	case MT8365_TOP_CG_TDM_OUT:
+		return AUD_TCON0_PDN_TDM_OUT;
+	case MT8365_TOP_CG_TDM_IN:
+		return AUD_TCON0_PDN_TDM_IN;
+	case MT8365_TOP_CG_ADC:
+		return AUD_TCON0_PDN_ADC;
+	case MT8365_TOP_CG_DAC:
+		return AUD_TCON0_PDN_DAC;
+	case MT8365_TOP_CG_DAC_PREDIS:
+		return AUD_TCON0_PDN_DAC_PREDIS;
+	case MT8365_TOP_CG_TML:
+		return AUD_TCON0_PDN_TML;
+	case MT8365_TOP_CG_I2S1_BCLK:
+		return AUD_TCON1_PDN_I2S1_BCLK;
+	case MT8365_TOP_CG_I2S2_BCLK:
+		return AUD_TCON1_PDN_I2S2_BCLK;
+	case MT8365_TOP_CG_I2S3_BCLK:
+		return AUD_TCON1_PDN_I2S3_BCLK;
+	case MT8365_TOP_CG_I2S4_BCLK:
+		return AUD_TCON1_PDN_I2S4_BCLK;
+	case MT8365_TOP_CG_DMIC0_ADC:
+		return AUD_TCON1_PDN_DMIC0_ADC;
+	case MT8365_TOP_CG_DMIC1_ADC:
+		return AUD_TCON1_PDN_DMIC1_ADC;
+	case MT8365_TOP_CG_DMIC2_ADC:
+		return AUD_TCON1_PDN_DMIC2_ADC;
+	case MT8365_TOP_CG_DMIC3_ADC:
+		return AUD_TCON1_PDN_DMIC3_ADC;
+	case MT8365_TOP_CG_CONNSYS_I2S_ASRC:
+		return AUD_TCON1_PDN_CONNSYS_I2S_ASRC;
+	case MT8365_TOP_CG_GENERAL1_ASRC:
+		return AUD_TCON1_PDN_GENERAL1_ASRC;
+	case MT8365_TOP_CG_GENERAL2_ASRC:
+		return AUD_TCON1_PDN_GENERAL2_ASRC;
+	case MT8365_TOP_CG_TDM_ASRC:
+		return AUD_TCON1_PDN_TDM_ASRC;
+	default:
+		return 0;
+	}
+}
+
+static unsigned int get_top_cg_on_val(unsigned int cg_type)
+{
+	return 0;
+}
+
+static unsigned int get_top_cg_off_val(unsigned int cg_type)
+{
+	return get_top_cg_mask(cg_type);
+}
+
+int mt8365_afe_enable_top_cg(struct mtk_base_afe *afe, unsigned int cg_type)
+{
+	struct mt8365_afe_private *afe_priv = afe->platform_priv;
+	unsigned int reg = get_top_cg_reg(cg_type);
+	unsigned int mask = get_top_cg_mask(cg_type);
+	unsigned int val = get_top_cg_on_val(cg_type);
+	unsigned long flags;
+
+	spin_lock_irqsave(&afe_priv->afe_ctrl_lock, flags);
+
+	afe_priv->top_cg_ref_cnt[cg_type]++;
+	if (afe_priv->top_cg_ref_cnt[cg_type] == 1)
+		regmap_update_bits(afe->regmap, reg, mask, val);
+
+	spin_unlock_irqrestore(&afe_priv->afe_ctrl_lock, flags);
+
+	return 0;
+}
+
+int mt8365_afe_disable_top_cg(struct mtk_base_afe *afe, unsigned int cg_type)
+{
+	struct mt8365_afe_private *afe_priv = afe->platform_priv;
+	unsigned int reg = get_top_cg_reg(cg_type);
+	unsigned int mask = get_top_cg_mask(cg_type);
+	unsigned int val = get_top_cg_off_val(cg_type);
+	unsigned long flags;
+
+	spin_lock_irqsave(&afe_priv->afe_ctrl_lock, flags);
+
+	afe_priv->top_cg_ref_cnt[cg_type]--;
+	if (afe_priv->top_cg_ref_cnt[cg_type] == 0)
+		regmap_update_bits(afe->regmap, reg, mask, val);
+	else if (afe_priv->top_cg_ref_cnt[cg_type] < 0)
+		afe_priv->top_cg_ref_cnt[cg_type] = 0;
+
+	spin_unlock_irqrestore(&afe_priv->afe_ctrl_lock, flags);
+
+	return 0;
+}
+
+int mt8365_afe_enable_main_clk(struct mtk_base_afe *afe)
+{
+	struct mt8365_afe_private *afe_priv = afe->platform_priv;
+
+	mt8365_afe_enable_clk(afe, afe_priv->clocks[MT8365_CLK_TOP_AUD_SEL]);
+	mt8365_afe_enable_top_cg(afe, MT8365_TOP_CG_AFE);
+	mt8365_afe_enable_afe_on(afe);
+
+	return 0;
+}
+
+int mt8365_afe_disable_main_clk(struct mtk_base_afe *afe)
+{
+	struct mt8365_afe_private *afe_priv = afe->platform_priv;
+
+	mt8365_afe_disable_afe_on(afe);
+	mt8365_afe_disable_top_cg(afe, MT8365_TOP_CG_AFE);
+	mt8365_afe_disable_clk(afe, afe_priv->clocks[MT8365_CLK_TOP_AUD_SEL]);
+
+	return 0;
+}
+
+int mt8365_afe_emi_clk_on(struct mtk_base_afe *afe)
+{
+	return 0;
+}
+
+int mt8365_afe_emi_clk_off(struct mtk_base_afe *afe)
+{
+	return 0;
+}
+
+int mt8365_afe_enable_afe_on(struct mtk_base_afe *afe)
+{
+	struct mt8365_afe_private *afe_priv = afe->platform_priv;
+	unsigned long flags;
+
+	spin_lock_irqsave(&afe_priv->afe_ctrl_lock, flags);
+
+	afe_priv->afe_on_ref_cnt++;
+	if (afe_priv->afe_on_ref_cnt == 1)
+		regmap_update_bits(afe->regmap, AFE_DAC_CON0, 0x1, 0x1);
+
+	spin_unlock_irqrestore(&afe_priv->afe_ctrl_lock, flags);
+
+	return 0;
+}
+
+int mt8365_afe_disable_afe_on(struct mtk_base_afe *afe)
+{
+	struct mt8365_afe_private *afe_priv = afe->platform_priv;
+	unsigned long flags;
+
+	spin_lock_irqsave(&afe_priv->afe_ctrl_lock, flags);
+
+	afe_priv->afe_on_ref_cnt--;
+	if (afe_priv->afe_on_ref_cnt == 0)
+		regmap_update_bits(afe->regmap, AFE_DAC_CON0, 0x1, 0x0);
+	else if (afe_priv->afe_on_ref_cnt < 0)
+		afe_priv->afe_on_ref_cnt = 0;
+
+	spin_unlock_irqrestore(&afe_priv->afe_ctrl_lock, flags);
+
+	return 0;
+}
+
+int mt8365_afe_hd_engen_enable(struct mtk_base_afe *afe, bool apll1)
+{
+	if (apll1)
+		regmap_update_bits(afe->regmap, AFE_HD_ENGEN_ENABLE,
+				   AFE_22M_PLL_EN, AFE_22M_PLL_EN);
+	else
+		regmap_update_bits(afe->regmap, AFE_HD_ENGEN_ENABLE,
+				   AFE_24M_PLL_EN, AFE_24M_PLL_EN);
+
+	return 0;
+}
+
+int mt8365_afe_hd_engen_disable(struct mtk_base_afe *afe, bool apll1)
+{
+	if (apll1)
+		regmap_update_bits(afe->regmap, AFE_HD_ENGEN_ENABLE,
+				   AFE_22M_PLL_EN, ~AFE_22M_PLL_EN);
+	else
+		regmap_update_bits(afe->regmap, AFE_HD_ENGEN_ENABLE,
+				   AFE_24M_PLL_EN, ~AFE_24M_PLL_EN);
+
+	return 0;
+}
+
+int mt8365_afe_enable_apll_tuner_cfg(struct mtk_base_afe *afe, unsigned int apll)
+{
+	struct mt8365_afe_private *afe_priv = afe->platform_priv;
+
+	mutex_lock(&afe_priv->afe_clk_mutex);
+
+	afe_priv->apll_tuner_ref_cnt[apll]++;
+	if (afe_priv->apll_tuner_ref_cnt[apll] != 1) {
+		mutex_unlock(&afe_priv->afe_clk_mutex);
+		return 0;
+	}
+
+	if (apll == MT8365_AFE_APLL1) {
+		regmap_update_bits(afe->regmap, AFE_APLL_TUNER_CFG,
+				   AFE_APLL_TUNER_CFG_MASK, 0x432);
+		regmap_update_bits(afe->regmap, AFE_APLL_TUNER_CFG,
+				   AFE_APLL_TUNER_CFG_EN_MASK, 0x1);
+	} else {
+		regmap_update_bits(afe->regmap, AFE_APLL_TUNER_CFG1,
+				   AFE_APLL_TUNER_CFG1_MASK, 0x434);
+		regmap_update_bits(afe->regmap, AFE_APLL_TUNER_CFG1,
+				   AFE_APLL_TUNER_CFG1_EN_MASK, 0x1);
+	}
+
+	mutex_unlock(&afe_priv->afe_clk_mutex);
+	return 0;
+}
+
+int mt8365_afe_disable_apll_tuner_cfg(struct mtk_base_afe *afe,	unsigned int apll)
+{
+	struct mt8365_afe_private *afe_priv = afe->platform_priv;
+
+	mutex_lock(&afe_priv->afe_clk_mutex);
+
+	afe_priv->apll_tuner_ref_cnt[apll]--;
+	if (afe_priv->apll_tuner_ref_cnt[apll] == 0) {
+		if (apll == MT8365_AFE_APLL1)
+			regmap_update_bits(afe->regmap, AFE_APLL_TUNER_CFG,
+					   AFE_APLL_TUNER_CFG_EN_MASK, 0x0);
+		else
+			regmap_update_bits(afe->regmap, AFE_APLL_TUNER_CFG1,
+					   AFE_APLL_TUNER_CFG1_EN_MASK, 0x0);
+
+	} else if (afe_priv->apll_tuner_ref_cnt[apll] < 0) {
+		afe_priv->apll_tuner_ref_cnt[apll] = 0;
+	}
+
+	mutex_unlock(&afe_priv->afe_clk_mutex);
+	return 0;
+}
+
+int mt8365_afe_enable_apll_associated_cfg(struct mtk_base_afe *afe, unsigned int apll)
+{
+	struct mt8365_afe_private *afe_priv = afe->platform_priv;
+
+	if (apll == MT8365_AFE_APLL1) {
+		if (clk_prepare_enable(afe_priv->clocks[MT8365_CLK_ENGEN1])) {
+			dev_info(afe->dev, "%s Failed to enable ENGEN1 clk\n",
+				 __func__);
+			return 0;
+		}
+		mt8365_afe_enable_top_cg(afe, MT8365_TOP_CG_22M);
+		mt8365_afe_hd_engen_enable(afe, true);
+#ifdef ENABLE_AFE_APLL_TUNER
+		mt8365_afe_enable_top_cg(afe, MT8365_TOP_CG_APLL_TUNER);
+		mt8365_afe_enable_apll_tuner_cfg(afe, MT8365_AFE_APLL1);
+#endif
+	} else {
+		if (clk_prepare_enable(afe_priv->clocks[MT8365_CLK_ENGEN2])) {
+			dev_info(afe->dev, "%s Failed to enable ENGEN2 clk\n",
+				 __func__);
+			return 0;
+		}
+		mt8365_afe_enable_top_cg(afe, MT8365_TOP_CG_24M);
+		mt8365_afe_hd_engen_enable(afe, false);
+#ifdef ENABLE_AFE_APLL_TUNER
+		mt8365_afe_enable_top_cg(afe, MT8365_TOP_CG_APLL2_TUNER);
+		mt8365_afe_enable_apll_tuner_cfg(afe, MT8365_AFE_APLL2);
+#endif
+	}
+
+	return 0;
+}
+
+int mt8365_afe_disable_apll_associated_cfg(struct mtk_base_afe *afe, unsigned int apll)
+{
+	struct mt8365_afe_private *afe_priv = afe->platform_priv;
+
+	if (apll == MT8365_AFE_APLL1) {
+#ifdef ENABLE_AFE_APLL_TUNER
+		mt8365_afe_disable_apll_tuner_cfg(afe, MT8365_AFE_APLL1);
+		mt8365_afe_disable_top_cg(afe, MT8365_TOP_CG_APLL_TUNER);
+#endif
+		mt8365_afe_hd_engen_disable(afe, true);
+		mt8365_afe_disable_top_cg(afe, MT8365_TOP_CG_22M);
+		clk_disable_unprepare(afe_priv->clocks[MT8365_CLK_ENGEN1]);
+	} else {
+#ifdef ENABLE_AFE_APLL_TUNER
+		mt8365_afe_disable_apll_tuner_cfg(afe, MT8365_AFE_APLL2);
+		mt8365_afe_disable_top_cg(afe, MT8365_TOP_CG_APLL2_TUNER);
+#endif
+		mt8365_afe_hd_engen_disable(afe, false);
+		mt8365_afe_disable_top_cg(afe, MT8365_TOP_CG_24M);
+		clk_disable_unprepare(afe_priv->clocks[MT8365_CLK_ENGEN2]);
+	}
+
+	return 0;
+}
diff --git a/sound/soc/mediatek/mt8365/mt8365-afe-clk.h b/sound/soc/mediatek/mt8365/mt8365-afe-clk.h
new file mode 100644
index 000000000000..14fca6ae2641
--- /dev/null
+++ b/sound/soc/mediatek/mt8365/mt8365-afe-clk.h
@@ -0,0 +1,49 @@ 
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Mediatek 8365 AFE clock control definitions
+ *
+ * Copyright (c) 2024 MediaTek Inc.
+ * Authors: Jia Zeng <jia.zeng@mediatek.com>
+ *          Alexandre Mergnat <amergnat@baylibre.com>
+ */
+
+#ifndef _MT8365_AFE_UTILS_H_
+#define _MT8365_AFE_UTILS_H_
+
+struct mtk_base_afe;
+struct clk;
+
+int mt8365_afe_init_audio_clk(struct mtk_base_afe *afe);
+
+int mt8365_afe_enable_clk(struct mtk_base_afe *afe, struct clk *clk);
+
+void mt8365_afe_disable_clk(struct mtk_base_afe *afe, struct clk *clk);
+
+int mt8365_afe_set_clk_rate(struct mtk_base_afe *afe, struct clk *clk, unsigned int rate);
+
+int mt8365_afe_set_clk_parent(struct mtk_base_afe *afe, struct clk *clk, struct clk *parent);
+
+int mt8365_afe_enable_top_cg(struct mtk_base_afe *afe, unsigned int cg_type);
+
+int mt8365_afe_disable_top_cg(struct mtk_base_afe *afe, unsigned int cg_type);
+
+int mt8365_afe_enable_main_clk(struct mtk_base_afe *afe);
+
+int mt8365_afe_disable_main_clk(struct mtk_base_afe *afe);
+
+int mt8365_afe_emi_clk_on(struct mtk_base_afe *afe);
+
+int mt8365_afe_emi_clk_off(struct mtk_base_afe *afe);
+
+int mt8365_afe_enable_afe_on(struct mtk_base_afe *afe);
+
+int mt8365_afe_disable_afe_on(struct mtk_base_afe *afe);
+
+int mt8365_afe_enable_apll_tuner_cfg(struct mtk_base_afe *afe, unsigned int apll);
+
+int mt8365_afe_disable_apll_tuner_cfg(struct mtk_base_afe *afe, unsigned int apll);
+
+int mt8365_afe_enable_apll_associated_cfg(struct mtk_base_afe *afe, unsigned int apll);
+
+int mt8365_afe_disable_apll_associated_cfg(struct mtk_base_afe *afe, unsigned int apll);
+#endif