Il 26/04/24 19:22, Alexandre Mergnat ha scritto:
Add ADDA Device Audio Interface support for MT8365 SoC.
Signed-off-by: Alexandre Mergnat <[email protected]>
---
sound/soc/mediatek/mt8365/mt8365-dai-adda.c | 315 ++++++++++++++++++++++++++++
1 file changed, 315 insertions(+)
diff --git a/sound/soc/mediatek/mt8365/mt8365-dai-adda.c
b/sound/soc/mediatek/mt8365/mt8365-dai-adda.c
new file mode 100644
index 000000000000..65d45010ac90
--- /dev/null
+++ b/sound/soc/mediatek/mt8365/mt8365-dai-adda.c
@@ -0,0 +1,315 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Mediatek 8365 ALSA SoC Audio DAI ADDA Control
+ *
+ * Copyright (c) 2024 MediaTek Inc.
+ * Authors: Jia Zeng <[email protected]>
+ * Alexandre Mergnat <[email protected]>
+ */
+
+#include <linux/bitops.h>
+#include <linux/regmap.h>
+#include <sound/pcm_params.h>
+#include "mt8365-afe-clk.h"
+#include "mt8365-afe-common.h"
+#include "../common/mtk-dai-adda-common.h"
+
+static int adda_afe_on_ref_cnt;
+
+/* DAI Drivers */
+
+static int mt8365_dai_set_adda_out(struct mtk_base_afe *afe, unsigned int rate)
+{
+ unsigned int val;
+
if (rate == 8000 || rate == 16000)
val = AFE_ADDA_DL_VOICE_DATA;
else
val = 0;
+ switch (rate) {
+ case 8000:
+ val = AFE_ADDA_DL_VOICE_DATA;
+ break;
+ case 16000:
+ val = AFE_ADDA_DL_VOICE_DATA;
+ break;
+ default:
+ val = 0;
+ }
+
+ val |= FIELD_PREP(AFE_ADDA_DL_SAMPLING_RATE,
+ mtk_adda_dl_rate_transform(afe, rate));
+ val |= AFE_ADDA_DL_8X_UPSAMPLE |
+ AFE_ADDA_DL_MUTE_OFF_CH1 |
+ AFE_ADDA_DL_MUTE_OFF_CH2 |
+ AFE_ADDA_DL_DEGRADE_GAIN;
+
+ regmap_update_bits(afe->regmap, AFE_ADDA_PREDIS_CON0, 0xffffffff, 0);
+ regmap_update_bits(afe->regmap, AFE_ADDA_PREDIS_CON1, 0xffffffff, 0);
+ regmap_update_bits(afe->regmap, AFE_ADDA_DL_SRC2_CON0, 0xffffffff, val);
+ /* SA suggest apply -0.3db to audio/speech path */
+ regmap_update_bits(afe->regmap, AFE_ADDA_DL_SRC2_CON1,
+ 0xffffffff, 0xf74f0000);
+ /* SA suggest use default value for sdm */
+ regmap_update_bits(afe->regmap, AFE_ADDA_DL_SDM_DCCOMP_CON,
+ 0xffffffff, 0x0700701e);
+
+ return 0;
+}
+
+static int mt8365_dai_set_adda_in(struct mtk_base_afe *afe, unsigned int rate)
+{
+ unsigned int val;
+
+ val = FIELD_PREP(AFE_ADDA_UL_SAMPLING_RATE,
+ mtk_adda_ul_rate_transform(afe, rate));
+ regmap_update_bits(afe->regmap, AFE_ADDA_UL_SRC_CON0,
+ AFE_ADDA_UL_SAMPLING_RATE, val);
+ /* Using Internal ADC */
+ regmap_update_bits(afe->regmap, AFE_ADDA_TOP_CON0, 0x1, 0x0);
+
+ return 0;
+}
+
+int mt8365_dai_enable_adda_on(struct mtk_base_afe *afe)
+{
+ unsigned long flags;
+ struct mt8365_afe_private *afe_priv = afe->platform_priv;
+
+ spin_lock_irqsave(&afe_priv->afe_ctrl_lock, flags);
+
+ adda_afe_on_ref_cnt++;
+ if (adda_afe_on_ref_cnt == 1)
+ regmap_update_bits(afe->regmap, AFE_ADDA_UL_DL_CON0,
+ AFE_ADDA_UL_DL_ADDA_AFE_ON,
+ AFE_ADDA_UL_DL_ADDA_AFE_ON);
+
+ spin_unlock_irqrestore(&afe_priv->afe_ctrl_lock, flags);
+
+ return 0;
+}
+
+int mt8365_dai_disable_adda_on(struct mtk_base_afe *afe)
+{
+ unsigned long flags;
+ struct mt8365_afe_private *afe_priv = afe->platform_priv;
+
+ spin_lock_irqsave(&afe_priv->afe_ctrl_lock, flags);
+
+ adda_afe_on_ref_cnt--;
+ if (adda_afe_on_ref_cnt == 0)
+ regmap_update_bits(afe->regmap, AFE_ADDA_UL_DL_CON0,
+ AFE_ADDA_UL_DL_ADDA_AFE_ON,
+ ~AFE_ADDA_UL_DL_ADDA_AFE_ON);
+ else if (adda_afe_on_ref_cnt < 0)
+ adda_afe_on_ref_cnt = 0;
Should we dev_warn() here? The refcount should never be less than zero - if it
is,
then there's some issue somewhere that must be solved.
+
+ spin_unlock_irqrestore(&afe_priv->afe_ctrl_lock, flags);
+
+ return 0;
+}
+
Cheers,
Angelo
