[PATCH v5 03/20] ASoC: mediatek: mt8186: support audsys clock control

Jiaxin Yu
2022-05-23T13:29:26Z

Add mt8186 audio cg control. Audio clock gates are registered to
CCF for reference count and clock parent management.

Signed-off-by: Jiaxin Yu <jiaxin.yu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
sound/soc/mediatek/mt8186/mt8186-audsys-clk.c | 150 ++++++++++++++++++
sound/soc/mediatek/mt8186/mt8186-audsys-clk.h | 15 ++
.../soc/mediatek/mt8186/mt8186-audsys-clkid.h | 45 ++++++
3 files changed, 210 insertions(+)
create mode 100644 sound/soc/mediatek/mt8186/mt8186-audsys-clk.c
create mode 100644 sound/soc/mediatek/mt8186/mt8186-audsys-clk.h
create mode 100644 sound/soc/mediatek/mt8186/mt8186-audsys-clkid.h

diff --git a/sound/soc/mediatek/mt8186/mt8186-audsys-clk.c b/sound/soc/mediatek/mt8186/mt8186-audsys-clk.c
new file mode 100644
index 000000000000..578969ca91c8
--- /dev/null
+++ b/sound/soc/mediatek/mt8186/mt8186-audsys-clk.c
@@ -0,0 +1,150 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// mt8186-audsys-clk.h -- Mediatek 8186 audsys clock control
+//
+// Copyright (c) 2022 MediaTek Inc.
+// Author: Jiaxin Yu <jiaxin.yu@mediatek.com>
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include "mt8186-afe-common.h"
+#include "mt8186-audsys-clk.h"
+#include "mt8186-audsys-clkid.h"
+#include "mt8186-reg.h"
+
+struct afe_gate {
+ int id;
+ const char *name;
+ const char *parent_name;
+ int reg;
+ u8 bit;
+ const struct clk_ops *ops;
+ unsigned long flags;
+ u8 cg_flags;
+};
+
+#define GATE_AFE_FLAGS(_id, _name, _parent, _reg, _bit, _flags, _cgflags) {\
+ .id = _id, \
+ .name = _name, \
+ .parent_name = _parent, \
+ .reg = _reg, \
+ .bit = _bit, \
+ .flags = _flags, \
+ .cg_flags = _cgflags, \
+ }
+
+#define GATE_AFE(_id, _name, _parent, _reg, _bit) \
+ GATE_AFE_FLAGS(_id, _name, _parent, _reg, _bit, \
+ CLK_SET_RATE_PARENT, CLK_GATE_SET_TO_DISABLE)
+
+#define GATE_AUD0(_id, _name, _parent, _bit) \
+ GATE_AFE(_id, _name, _parent, AUDIO_TOP_CON0, _bit)
+
+#define GATE_AUD1(_id, _name, _parent, _bit) \
+ GATE_AFE(_id, _name, _parent, AUDIO_TOP_CON1, _bit)
+
+#define GATE_AUD2(_id, _name, _parent, _bit) \
+ GATE_AFE(_id, _name, _parent, AUDIO_TOP_CON2, _bit)
+
+static const struct afe_gate aud_clks[CLK_AUD_NR_CLK] = {
+ /* AUD0 */
+ GATE_AUD0(CLK_AUD_AFE, "aud_afe_clk", "top_audio", 2),
+ GATE_AUD0(CLK_AUD_22M, "aud_apll22m_clk", "top_aud_engen1", 8),
+ GATE_AUD0(CLK_AUD_24M, "aud_apll24m_clk", "top_aud_engen2", 9),
+ GATE_AUD0(CLK_AUD_APLL2_TUNER, "aud_apll2_tuner_clk", "top_aud_engen2", 18),
+ GATE_AUD0(CLK_AUD_APLL_TUNER, "aud_apll_tuner_clk", "top_aud_engen1", 19),
+ GATE_AUD0(CLK_AUD_TDM, "aud_tdm_clk", "top_aud_1", 20),
+ GATE_AUD0(CLK_AUD_ADC, "aud_adc_clk", "top_audio", 24),
+ GATE_AUD0(CLK_AUD_DAC, "aud_dac_clk", "top_audio", 25),
+ GATE_AUD0(CLK_AUD_DAC_PREDIS, "aud_dac_predis_clk", "top_audio", 26),
+ GATE_AUD0(CLK_AUD_TML, "aud_tml_clk", "top_audio", 27),
+ GATE_AUD0(CLK_AUD_NLE, "aud_nle_clk", "top_audio", 28),
+
+ /* AUD1 */
+ GATE_AUD1(CLK_AUD_I2S1_BCLK, "aud_i2s1_bclk", "top_audio", 4),
+ GATE_AUD1(CLK_AUD_I2S2_BCLK, "aud_i2s2_bclk", "top_audio", 5),
+ GATE_AUD1(CLK_AUD_I2S3_BCLK, "aud_i2s3_bclk", "top_audio", 6),
+ GATE_AUD1(CLK_AUD_I2S4_BCLK, "aud_i2s4_bclk", "top_audio", 7),
+ GATE_AUD1(CLK_AUD_CONNSYS_I2S_ASRC, "aud_connsys_i2s_asrc", "top_audio", 12),
+ GATE_AUD1(CLK_AUD_GENERAL1_ASRC, "aud_general1_asrc", "top_audio", 13),
+ GATE_AUD1(CLK_AUD_GENERAL2_ASRC, "aud_general2_asrc", "top_audio", 14),
+ GATE_AUD1(CLK_AUD_DAC_HIRES, "aud_dac_hires_clk", "top_audio_h", 15),
+ GATE_AUD1(CLK_AUD_ADC_HIRES, "aud_adc_hires_clk", "top_audio_h", 16),
+ GATE_AUD1(CLK_AUD_ADC_HIRES_TML, "aud_adc_hires_tml", "top_audio_h", 17),
+ GATE_AUD1(CLK_AUD_ADDA6_ADC, "aud_adda6_adc", "top_audio", 20),
+ GATE_AUD1(CLK_AUD_ADDA6_ADC_HIRES, "aud_adda6_adc_hires", "top_audio_h", 21),
+ GATE_AUD1(CLK_AUD_3RD_DAC, "aud_3rd_dac", "top_audio", 28),
+ GATE_AUD1(CLK_AUD_3RD_DAC_PREDIS, "aud_3rd_dac_predis", "top_audio", 29),
+ GATE_AUD1(CLK_AUD_3RD_DAC_TML, "aud_3rd_dac_tml", "top_audio", 30),
+ GATE_AUD1(CLK_AUD_3RD_DAC_HIRES, "aud_3rd_dac_hires", "top_audio_h", 31),
+
+ /* AUD2 */
+ GATE_AUD2(CLK_AUD_ETDM_IN1_BCLK, "aud_etdm_in1_bclk", "top_audio", 23),
+ GATE_AUD2(CLK_AUD_ETDM_OUT1_BCLK, "aud_etdm_out1_bclk", "top_audio", 24),
+};
+
+int mt8186_audsys_clk_register(struct mtk_base_afe *afe)
+{
+ struct mt8186_afe_private *afe_priv = afe->platform_priv;
+ struct clk *clk;
+ struct clk_lookup *cl;
+ int i;
+
+ afe_priv->lookup = devm_kcalloc(afe->dev, CLK_AUD_NR_CLK,
+ sizeof(*afe_priv->lookup),
+ GFP_KERNEL);
+
+ if (!afe_priv->lookup)
+ return -ENOMEM;
+
+ for (i = 0; i < ARRAY_SIZE(aud_clks); i++) {
+ const struct afe_gate *gate = &aud_clks[i];
+
+ clk = clk_register_gate(afe->dev, gate->name, gate->parent_name,
+ gate->flags, afe->base_addr + gate->reg,
+ gate->bit, gate->cg_flags, NULL);
+
+ if (IS_ERR(clk)) {
+ dev_err(afe->dev, "Failed to register clk %s: %ld\n",
+ gate->name, PTR_ERR(clk));
+ continue;
+ }
+
+ /* add clk_lookup for devm_clk_get(SND_SOC_DAPM_CLOCK_SUPPLY) */
+ cl = kzalloc(sizeof(*cl), GFP_KERNEL);
+ if (!cl)
+ return -ENOMEM;
+
+ cl->clk = clk;
+ cl->con_id = gate->name;
+ cl->dev_id = dev_name(afe->dev);
+ clkdev_add(cl);
+
+ afe_priv->lookup[i] = cl;
+ }
+
+ return 0;
+}
+
+void mt8186_audsys_clk_unregister(struct mtk_base_afe *afe)
+{
+ struct mt8186_afe_private *afe_priv = afe->platform_priv;
+ struct clk *clk;
+ struct clk_lookup *cl;
+ int i;
+
+ if (!afe_priv)
+ return;
+
+ for (i = 0; i < CLK_AUD_NR_CLK; i++) {
+ cl = afe_priv->lookup[i];
+ if (!cl)
+ continue;
+
+ clk = cl->clk;
+ clk_unregister_gate(clk);
+
+ clkdev_drop(cl);
+ }
+}
diff --git a/sound/soc/mediatek/mt8186/mt8186-audsys-clk.h b/sound/soc/mediatek/mt8186/mt8186-audsys-clk.h
new file mode 100644
index 000000000000..b8d6a06e11e8
--- /dev/null
+++ b/sound/soc/mediatek/mt8186/mt8186-audsys-clk.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * mt8186-audsys-clk.h -- Mediatek 8186 audsys clock definition
+ *
+ * Copyright (c) 2022 MediaTek Inc.
+ * Author: Trevor Wu <trevor.wu@mediatek.com>
+ */
+
+#ifndef _MT8186_AUDSYS_CLK_H_
+#define _MT8186_AUDSYS_CLK_H_
+
+int mt8186_audsys_clk_register(struct mtk_base_afe *afe);
+void mt8186_audsys_clk_unregister(struct mtk_base_afe *afe);
+
+#endif
diff --git a/sound/soc/mediatek/mt8186/mt8186-audsys-clkid.h b/sound/soc/mediatek/mt8186/mt8186-audsys-clkid.h
new file mode 100644
index 000000000000..3ce5937c1823
--- /dev/null
+++ b/sound/soc/mediatek/mt8186/mt8186-audsys-clkid.h
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * mt8186-audsys-clkid.h -- Mediatek 8186 audsys clock id definition
+ *
+ * Copyright (c) 2022 MediaTek Inc.
+ * Author: Jiaxin Yu <jiaxin.yu@mediatek.com>
+ */
+
+#ifndef _MT8186_AUDSYS_CLKID_H_
+#define _MT8186_AUDSYS_CLKID_H_
+
+enum{
+ CLK_AUD_AFE,
+ CLK_AUD_22M,
+ CLK_AUD_24M,
+ CLK_AUD_APLL2_TUNER,
+ CLK_AUD_APLL_TUNER,
+ CLK_AUD_TDM,
+ CLK_AUD_ADC,
+ CLK_AUD_DAC,
+ CLK_AUD_DAC_PREDIS,
+ CLK_AUD_TML,
+ CLK_AUD_NLE,
+ CLK_AUD_I2S1_BCLK,
+ CLK_AUD_I2S2_BCLK,
+ CLK_AUD_I2S3_BCLK,
+ CLK_AUD_I2S4_BCLK,
+ CLK_AUD_CONNSYS_I2S_ASRC,
+ CLK_AUD_GENERAL1_ASRC,
+ CLK_AUD_GENERAL2_ASRC,
+ CLK_AUD_DAC_HIRES,
+ CLK_AUD_ADC_HIRES,
+ CLK_AUD_ADC_HIRES_TML,
+ CLK_AUD_ADDA6_ADC,
+ CLK_AUD_ADDA6_ADC_HIRES,
+ CLK_AUD_3RD_DAC,
+ CLK_AUD_3RD_DAC_PREDIS,
+ CLK_AUD_3RD_DAC_TML,
+ CLK_AUD_3RD_DAC_HIRES,
+ CLK_AUD_ETDM_IN1_BCLK,
+ CLK_AUD_ETDM_OUT1_BCLK,
+ CLK_AUD_NR_CLK,
+};
+
+#endif
--
2.18.0