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Message-ID: <20250307124841.23777-11-darren.ye@mediatek.com>
Date: Fri, 7 Mar 2025 20:47:36 +0800
From: Darren.Ye <darren.ye@...iatek.com>
To: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, "Rob
Herring" <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, "Conor
Dooley" <conor+dt@...nel.org>, Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, "Linus
Walleij" <linus.walleij@...aro.org>, Bartosz Golaszewski <brgl@...ev.pl>
CC: <linux-sound@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>, <linux-gpio@...r.kernel.org>, Darren Ye
<darren.ye@...iatek.com>
Subject: [PATCH 10/14] ASoC: mediatek: mt8196: support CM in platform driver
From: Darren Ye <darren.ye@...iatek.com>
Add mt8196 CM driver support for ADDA multi-channel.
Signed-off-by: Darren Ye <darren.ye@...iatek.com>
---
sound/soc/mediatek/mt8196/mt8196-afe-cm.c | 94 +++++++++++++++++++++++
sound/soc/mediatek/mt8196/mt8196-afe-cm.h | 23 ++++++
2 files changed, 117 insertions(+)
create mode 100644 sound/soc/mediatek/mt8196/mt8196-afe-cm.c
create mode 100644 sound/soc/mediatek/mt8196/mt8196-afe-cm.h
diff --git a/sound/soc/mediatek/mt8196/mt8196-afe-cm.c b/sound/soc/mediatek/mt8196/mt8196-afe-cm.c
new file mode 100644
index 000000000000..b923844a76f8
--- /dev/null
+++ b/sound/soc/mediatek/mt8196/mt8196-afe-cm.c
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2024 MediaTek Inc.
+ * Author: Darren Ye <darren.ye@...iatek.com>
+ */
+
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <sound/soc.h>
+
+#include "mtk-afe-fe-dai.h"
+#include "mtk-base-afe.h"
+
+#include "mt8196-afe-cm.h"
+#include "mt8196-afe-common.h"
+
+void mt8196_set_cm_rate(struct mtk_base_afe *afe, int id, unsigned int rate)
+{
+ struct mt8196_afe_private *afe_priv = afe->platform_priv;
+
+ afe_priv->cm_rate[id] = rate;
+}
+EXPORT_SYMBOL_GPL(mt8196_set_cm_rate);
+
+static int mt8196_convert_cm_ch(unsigned int ch)
+{
+ return ch - 1;
+}
+
+static unsigned int calculate_cm_update(int rate, int ch)
+{
+ unsigned int update_val;
+
+ update_val = 26000000 / rate / (ch / 2);
+ update_val = update_val * 10 / 7;
+ if (update_val > 100)
+ update_val = 100;
+ if (update_val < 7)
+ update_val = 7;
+
+ return update_val;
+}
+
+int mt8196_set_cm(struct mtk_base_afe *afe, int id,
+ bool update, bool swap, unsigned int ch)
+{
+ unsigned int rate = 0;
+ unsigned int update_val = 0;
+ int reg;
+ struct mt8196_afe_private *afe_priv = afe->platform_priv;
+
+ dev_dbg(afe->dev, "%s()-0, CM%d, rate %d, update %d, swap %d, ch %d\n",
+ __func__, id, rate, update, swap, ch);
+
+ rate = afe_priv->cm_rate[id];
+ update_val = update ? calculate_cm_update(rate, (int)ch) : 0x64;
+
+ reg = AFE_CM0_CON0 + 0x10 * id;
+ /* update cnt */
+ mtk_regmap_update_bits(afe->regmap, reg, AFE_CM_UPDATE_CNT_MASK,
+ update_val, AFE_CM_UPDATE_CNT_SFT);
+
+ /* rate */
+ mtk_regmap_update_bits(afe->regmap, reg, AFE_CM_1X_EN_SEL_FS_MASK,
+ rate, AFE_CM_1X_EN_SEL_FS_SFT);
+
+ /* ch num */
+ ch = mt8196_convert_cm_ch(ch);
+ mtk_regmap_update_bits(afe->regmap, reg, AFE_CM_CH_NUM_MASK,
+ ch, AFE_CM_CH_NUM_SFT);
+
+ /* swap */
+ mtk_regmap_update_bits(afe->regmap, reg, AFE_CM_BYTE_SWAP_MASK,
+ swap, AFE_CM_BYTE_SWAP_SFT);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mt8196_set_cm);
+
+int mt8196_enable_cm_bypass(struct mtk_base_afe *afe, int id, bool en)
+{
+ int reg = AFE_CM0_CON0 + 0x10 * id;
+
+ mtk_regmap_update_bits(afe->regmap, reg, AFE_CM_BYPASS_MODE_MASK,
+ en, AFE_CM_BYPASS_MODE_SFT);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mt8196_enable_cm_bypass);
+
+MODULE_DESCRIPTION("Mediatek afe cm");
+MODULE_AUTHOR("darren ye <darren.ye@...iatek.com>");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/mediatek/mt8196/mt8196-afe-cm.h b/sound/soc/mediatek/mt8196/mt8196-afe-cm.h
new file mode 100644
index 000000000000..18115ec8fa70
--- /dev/null
+++ b/sound/soc/mediatek/mt8196/mt8196-afe-cm.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2024 MediaTek Inc.
+ * Author: Darren Ye <darren.ye@...iatek.com>
+ */
+
+#ifndef MTK_AFE_CM_H_
+#define MTK_AFE_CM_H_
+enum {
+ CM0,
+ CM1,
+ CM2,
+ CM_NUM,
+};
+
+void mt8196_set_cm_rate(struct mtk_base_afe *afe, int id, unsigned int rate);
+
+int mt8196_set_cm(struct mtk_base_afe *afe, int id, bool update,
+ bool swap, unsigned int ch);
+int mt8196_enable_cm_bypass(struct mtk_base_afe *afe, int id, bool en);
+
+#endif /* MTK_AFE_CM_H_ */
+
--
2.45.2
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