1 files changed, 298 insertions, 0 deletions

diff --git a/sound/soc/mediatek/mt2701/mt2701-afe-clock-ctrl.c b/sound/soc/mediatek/mt2701/mt2701-afe-clock-ctrl.c
new file mode 100644
index 000000000..ae620890b
--- /dev/null
+++ b/sound/soc/mediatek/mt2701/mt2701-afe-clock-ctrl.c
@@ -0,0 +1,298 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * mt2701-afe-clock-ctrl.c  --  Mediatek 2701 afe clock ctrl
+ *
+ * Copyright (c) 2016 MediaTek Inc.
+ * Author: Garlic Tseng <garlic.tseng@mediatek.com>
+ *	   Ryder Lee <ryder.lee@mediatek.com>
+ */
+
+#include "mt2701-afe-common.h"
+#include "mt2701-afe-clock-ctrl.h"
+
+static const char *const base_clks[] = {
+	[MT2701_INFRA_SYS_AUDIO] = "infra_sys_audio_clk",
+	[MT2701_TOP_AUD_MCLK_SRC0] = "top_audio_mux1_sel",
+	[MT2701_TOP_AUD_MCLK_SRC1] = "top_audio_mux2_sel",
+	[MT2701_TOP_AUD_A1SYS] = "top_audio_a1sys_hp",
+	[MT2701_TOP_AUD_A2SYS] = "top_audio_a2sys_hp",
+	[MT2701_AUDSYS_AFE] = "audio_afe_pd",
+	[MT2701_AUDSYS_AFE_CONN] = "audio_afe_conn_pd",
+	[MT2701_AUDSYS_A1SYS] = "audio_a1sys_pd",
+	[MT2701_AUDSYS_A2SYS] = "audio_a2sys_pd",
+};
+
+int mt2701_init_clock(struct mtk_base_afe *afe)
+{
+	struct mt2701_afe_private *afe_priv = afe->platform_priv;
+	int i;
+
+	for (i = 0; i < MT2701_BASE_CLK_NUM; i++) {
+		afe_priv->base_ck[i] = devm_clk_get(afe->dev, base_clks[i]);
+		if (IS_ERR(afe_priv->base_ck[i])) {
+			dev_err(afe->dev, "failed to get %s\n", base_clks[i]);
+			return PTR_ERR(afe_priv->base_ck[i]);
+		}
+	}
+
+	/* Get I2S related clocks */
+	for (i = 0; i < afe_priv->soc->i2s_num; i++) {
+		struct mt2701_i2s_path *i2s_path = &afe_priv->i2s_path[i];
+		struct clk *i2s_ck;
+		char name[13];
+
+		snprintf(name, sizeof(name), "i2s%d_src_sel", i);
+		i2s_path->sel_ck = devm_clk_get(afe->dev, name);
+		if (IS_ERR(i2s_path->sel_ck)) {
+			dev_err(afe->dev, "failed to get %s\n", name);
+			return PTR_ERR(i2s_path->sel_ck);
+		}
+
+		snprintf(name, sizeof(name), "i2s%d_src_div", i);
+		i2s_path->div_ck = devm_clk_get(afe->dev, name);
+		if (IS_ERR(i2s_path->div_ck)) {
+			dev_err(afe->dev, "failed to get %s\n", name);
+			return PTR_ERR(i2s_path->div_ck);
+		}
+
+		snprintf(name, sizeof(name), "i2s%d_mclk_en", i);
+		i2s_path->mclk_ck = devm_clk_get(afe->dev, name);
+		if (IS_ERR(i2s_path->mclk_ck)) {
+			dev_err(afe->dev, "failed to get %s\n", name);
+			return PTR_ERR(i2s_path->mclk_ck);
+		}
+
+		snprintf(name, sizeof(name), "i2so%d_hop_ck", i);
+		i2s_ck = devm_clk_get(afe->dev, name);
+		if (IS_ERR(i2s_ck)) {
+			dev_err(afe->dev, "failed to get %s\n", name);
+			return PTR_ERR(i2s_ck);
+		}
+		i2s_path->hop_ck[SNDRV_PCM_STREAM_PLAYBACK] = i2s_ck;
+
+		snprintf(name, sizeof(name), "i2si%d_hop_ck", i);
+		i2s_ck = devm_clk_get(afe->dev, name);
+		if (IS_ERR(i2s_ck)) {
+			dev_err(afe->dev, "failed to get %s\n", name);
+			return PTR_ERR(i2s_ck);
+		}
+		i2s_path->hop_ck[SNDRV_PCM_STREAM_CAPTURE] = i2s_ck;
+
+		snprintf(name, sizeof(name), "asrc%d_out_ck", i);
+		i2s_path->asrco_ck = devm_clk_get(afe->dev, name);
+		if (IS_ERR(i2s_path->asrco_ck)) {
+			dev_err(afe->dev, "failed to get %s\n", name);
+			return PTR_ERR(i2s_path->asrco_ck);
+		}
+	}
+
+	/* Some platforms may support BT path */
+	afe_priv->mrgif_ck = devm_clk_get(afe->dev, "audio_mrgif_pd");
+	if (IS_ERR(afe_priv->mrgif_ck)) {
+		if (PTR_ERR(afe_priv->mrgif_ck) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
+
+		afe_priv->mrgif_ck = NULL;
+	}
+
+	return 0;
+}
+
+int mt2701_afe_enable_i2s(struct mtk_base_afe *afe,
+			  struct mt2701_i2s_path *i2s_path,
+			  int dir)
+{
+	int ret;
+
+	ret = clk_prepare_enable(i2s_path->asrco_ck);
+	if (ret) {
+		dev_err(afe->dev, "failed to enable ASRC clock %d\n", ret);
+		return ret;
+	}
+
+	ret = clk_prepare_enable(i2s_path->hop_ck[dir]);
+	if (ret) {
+		dev_err(afe->dev, "failed to enable I2S clock %d\n", ret);
+		goto err_hop_ck;
+	}
+
+	return 0;
+
+err_hop_ck:
+	clk_disable_unprepare(i2s_path->asrco_ck);
+
+	return ret;
+}
+
+void mt2701_afe_disable_i2s(struct mtk_base_afe *afe,
+			    struct mt2701_i2s_path *i2s_path,
+			    int dir)
+{
+	clk_disable_unprepare(i2s_path->hop_ck[dir]);
+	clk_disable_unprepare(i2s_path->asrco_ck);
+}
+
+int mt2701_afe_enable_mclk(struct mtk_base_afe *afe, int id)
+{
+	struct mt2701_afe_private *afe_priv = afe->platform_priv;
+	struct mt2701_i2s_path *i2s_path = &afe_priv->i2s_path[id];
+
+	return clk_prepare_enable(i2s_path->mclk_ck);
+}
+
+void mt2701_afe_disable_mclk(struct mtk_base_afe *afe, int id)
+{
+	struct mt2701_afe_private *afe_priv = afe->platform_priv;
+	struct mt2701_i2s_path *i2s_path = &afe_priv->i2s_path[id];
+
+	clk_disable_unprepare(i2s_path->mclk_ck);
+}
+
+int mt2701_enable_btmrg_clk(struct mtk_base_afe *afe)
+{
+	struct mt2701_afe_private *afe_priv = afe->platform_priv;
+
+	return clk_prepare_enable(afe_priv->mrgif_ck);
+}
+
+void mt2701_disable_btmrg_clk(struct mtk_base_afe *afe)
+{
+	struct mt2701_afe_private *afe_priv = afe->platform_priv;
+
+	clk_disable_unprepare(afe_priv->mrgif_ck);
+}
+
+static int mt2701_afe_enable_audsys(struct mtk_base_afe *afe)
+{
+	struct mt2701_afe_private *afe_priv = afe->platform_priv;
+	int ret;
+
+	/* Enable infra clock gate */
+	ret = clk_prepare_enable(afe_priv->base_ck[MT2701_INFRA_SYS_AUDIO]);
+	if (ret)
+		return ret;
+
+	/* Enable top a1sys clock gate */
+	ret = clk_prepare_enable(afe_priv->base_ck[MT2701_TOP_AUD_A1SYS]);
+	if (ret)
+		goto err_a1sys;
+
+	/* Enable top a2sys clock gate */
+	ret = clk_prepare_enable(afe_priv->base_ck[MT2701_TOP_AUD_A2SYS]);
+	if (ret)
+		goto err_a2sys;
+
+	/* Internal clock gates */
+	ret = clk_prepare_enable(afe_priv->base_ck[MT2701_AUDSYS_AFE]);
+	if (ret)
+		goto err_afe;
+
+	ret = clk_prepare_enable(afe_priv->base_ck[MT2701_AUDSYS_A1SYS]);
+	if (ret)
+		goto err_audio_a1sys;
+
+	ret = clk_prepare_enable(afe_priv->base_ck[MT2701_AUDSYS_A2SYS]);
+	if (ret)
+		goto err_audio_a2sys;
+
+	ret = clk_prepare_enable(afe_priv->base_ck[MT2701_AUDSYS_AFE_CONN]);
+	if (ret)
+		goto err_afe_conn;
+
+	return 0;
+
+err_afe_conn:
+	clk_disable_unprepare(afe_priv->base_ck[MT2701_AUDSYS_A2SYS]);
+err_audio_a2sys:
+	clk_disable_unprepare(afe_priv->base_ck[MT2701_AUDSYS_A1SYS]);
+err_audio_a1sys:
+	clk_disable_unprepare(afe_priv->base_ck[MT2701_AUDSYS_AFE]);
+err_afe:
+	clk_disable_unprepare(afe_priv->base_ck[MT2701_TOP_AUD_A2SYS]);
+err_a2sys:
+	clk_disable_unprepare(afe_priv->base_ck[MT2701_TOP_AUD_A1SYS]);
+err_a1sys:
+	clk_disable_unprepare(afe_priv->base_ck[MT2701_INFRA_SYS_AUDIO]);
+
+	return ret;
+}
+
+static void mt2701_afe_disable_audsys(struct mtk_base_afe *afe)
+{
+	struct mt2701_afe_private *afe_priv = afe->platform_priv;
+
+	clk_disable_unprepare(afe_priv->base_ck[MT2701_AUDSYS_AFE_CONN]);
+	clk_disable_unprepare(afe_priv->base_ck[MT2701_AUDSYS_A2SYS]);
+	clk_disable_unprepare(afe_priv->base_ck[MT2701_AUDSYS_A1SYS]);
+	clk_disable_unprepare(afe_priv->base_ck[MT2701_AUDSYS_AFE]);
+	clk_disable_unprepare(afe_priv->base_ck[MT2701_TOP_AUD_A1SYS]);
+	clk_disable_unprepare(afe_priv->base_ck[MT2701_TOP_AUD_A2SYS]);
+	clk_disable_unprepare(afe_priv->base_ck[MT2701_INFRA_SYS_AUDIO]);
+}
+
+int mt2701_afe_enable_clock(struct mtk_base_afe *afe)
+{
+	int ret;
+
+	/* Enable audio system */
+	ret = mt2701_afe_enable_audsys(afe);
+	if (ret) {
+		dev_err(afe->dev, "failed to enable audio system %d\n", ret);
+		return ret;
+	}
+
+	regmap_update_bits(afe->regmap, ASYS_TOP_CON,
+			   ASYS_TOP_CON_ASYS_TIMING_ON,
+			   ASYS_TOP_CON_ASYS_TIMING_ON);
+	regmap_update_bits(afe->regmap, AFE_DAC_CON0,
+			   AFE_DAC_CON0_AFE_ON,
+			   AFE_DAC_CON0_AFE_ON);
+
+	/* Configure ASRC */
+	regmap_write(afe->regmap, PWR1_ASM_CON1, PWR1_ASM_CON1_INIT_VAL);
+	regmap_write(afe->regmap, PWR2_ASM_CON1, PWR2_ASM_CON1_INIT_VAL);
+
+	return 0;
+}
+
+int mt2701_afe_disable_clock(struct mtk_base_afe *afe)
+{
+	regmap_update_bits(afe->regmap, ASYS_TOP_CON,
+			   ASYS_TOP_CON_ASYS_TIMING_ON, 0);
+	regmap_update_bits(afe->regmap, AFE_DAC_CON0,
+			   AFE_DAC_CON0_AFE_ON, 0);
+
+	mt2701_afe_disable_audsys(afe);
+
+	return 0;
+}
+
+int mt2701_mclk_configuration(struct mtk_base_afe *afe, int id)
+
+{
+	struct mt2701_afe_private *priv = afe->platform_priv;
+	struct mt2701_i2s_path *i2s_path = &priv->i2s_path[id];
+	int ret = -EINVAL;
+
+	/* Set mclk source */
+	if (!(MT2701_PLL_DOMAIN_0_RATE % i2s_path->mclk_rate))
+		ret = clk_set_parent(i2s_path->sel_ck,
+				     priv->base_ck[MT2701_TOP_AUD_MCLK_SRC0]);
+	else if (!(MT2701_PLL_DOMAIN_1_RATE % i2s_path->mclk_rate))
+		ret = clk_set_parent(i2s_path->sel_ck,
+				     priv->base_ck[MT2701_TOP_AUD_MCLK_SRC1]);
+
+	if (ret) {
+		dev_err(afe->dev, "failed to set mclk source\n");
+		return ret;
+	}
+
+	/* Set mclk divider */
+	ret = clk_set_rate(i2s_path->div_ck, i2s_path->mclk_rate);
+	if (ret) {
+		dev_err(afe->dev, "failed to set mclk divider %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}