Il 26/04/24 19:22, Alexandre Mergnat ha scritto:

Add ADDA Device Audio Interface support for MT8365 SoC.

Signed-off-by: Alexandre Mergnat amergnat@baylibre.com

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 jia.zeng@mediatek.com

• •      Alexandre Mergnat <amergnat@baylibre.com>
    

• */

+#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