linux-kernel - Re: [PATCH v2 2/7] ASoC: mediatek: mt7986: support audio clock control

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Message-ID: <455446f5-818b-8fd0-0308-3e3f9096bbd3@microchip.com>
Date:   Tue, 27 Jun 2023 04:37:13 +0000
From:   <Claudiu.Beznea@...rochip.com>
To:     <maso.huang@...iatek.com>, <lgirdwood@...il.com>,
        <broonie@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <matthias.bgg@...il.com>,
        <angelogioacchino.delregno@...labora.com>, <perex@...ex.cz>,
        <tiwai@...e.com>, <trevor.wu@...iatek.com>,
        <jiaxin.yu@...iatek.com>, <renzhijie2@...wei.com>,
        <allen-kh.cheng@...iatek.com>, <alsa-devel@...a-project.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH v2 2/7] ASoC: mediatek: mt7986: support audio clock
 control

On 26.06.2023 05:34, Maso Huang wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> Add audio clock wrapper and audio tuner control.
> 
> Signed-off-by: Maso Huang <maso.huang@...iatek.com>

Reviewed-by: Claudiu Beznea <claudiu.beznea@...rochip.com>


> ---
>  sound/soc/mediatek/mt7986/mt7986-afe-clk.c | 75 ++++++++++++++++++++++
>  sound/soc/mediatek/mt7986/mt7986-afe-clk.h | 18 ++++++
>  2 files changed, 93 insertions(+)
>  create mode 100644 sound/soc/mediatek/mt7986/mt7986-afe-clk.c
>  create mode 100644 sound/soc/mediatek/mt7986/mt7986-afe-clk.h
> 
> diff --git a/sound/soc/mediatek/mt7986/mt7986-afe-clk.c b/sound/soc/mediatek/mt7986/mt7986-afe-clk.c
> new file mode 100644
> index 000000000000..a8b5fae05673
> --- /dev/null
> +++ b/sound/soc/mediatek/mt7986/mt7986-afe-clk.c
> @@ -0,0 +1,75 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * mt7986-afe-clk.c  --  MediaTek 7986 afe clock ctrl
> + *
> + * Copyright (c) 2021 MediaTek Inc.
> + * Author: Vic Wu <vic.wu@...iatek.com>
> + *         Maso Huang <maso.huang@...iatek.com>
> + */
> +
> +#include <linux/clk.h>
> +
> +#include "mt7986-afe-common.h"
> +#include "mt7986-afe-clk.h"
> +#include "mt7986-reg.h"
> +
> +enum {
> +       CK_INFRA_AUD_BUS_CK = 0,
> +       CK_INFRA_AUD_26M_CK,
> +       CK_INFRA_AUD_L_CK,
> +       CK_INFRA_AUD_AUD_CK,
> +       CK_INFRA_AUD_EG2_CK,
> +       CLK_NUM
> +};
> +
> +static const char *aud_clks[CLK_NUM] = {
> +       [CK_INFRA_AUD_BUS_CK] = "aud_bus_ck",
> +       [CK_INFRA_AUD_26M_CK] = "aud_26m_ck",
> +       [CK_INFRA_AUD_L_CK] = "aud_l_ck",
> +       [CK_INFRA_AUD_AUD_CK] = "aud_aud_ck",
> +       [CK_INFRA_AUD_EG2_CK] = "aud_eg2_ck",
> +};
> +
> +int mt7986_init_clock(struct mtk_base_afe *afe)
> +{
> +       struct mt7986_afe_private *afe_priv = afe->platform_priv;
> +       int ret, i;
> +
> +       afe_priv->clks = devm_kcalloc(afe->dev, CLK_NUM,
> +                               sizeof(*afe_priv->clks), GFP_KERNEL);
> +       if (!afe_priv->clks)
> +               return -ENOMEM;
> +       afe_priv->num_clks = CLK_NUM;
> +
> +       for (i = 0; i < afe_priv->num_clks; i++)
> +               afe_priv->clks[i].id = aud_clks[i];
> +
> +       ret = devm_clk_bulk_get(afe->dev, afe_priv->num_clks, afe_priv->clks);
> +       if (ret)
> +               return dev_err_probe(afe->dev, ret, "Failed to get clocks\n");
> +
> +       return 0;
> +}
> +
> +int mt7986_afe_enable_clock(struct mtk_base_afe *afe)
> +{
> +       struct mt7986_afe_private *afe_priv = afe->platform_priv;
> +       int ret;
> +
> +       ret = clk_bulk_prepare_enable(afe_priv->num_clks, afe_priv->clks);
> +       if (ret)
> +               return dev_err_probe(afe->dev, ret, "Failed to enable clocks\n");
> +
> +       return 0;
> +}
> +EXPORT_SYMBOL_GPL(mt7986_afe_enable_clock);
> +
> +int mt7986_afe_disable_clock(struct mtk_base_afe *afe)
> +{
> +       struct mt7986_afe_private *afe_priv = afe->platform_priv;
> +
> +       clk_bulk_disable_unprepare(afe_priv->num_clks, afe_priv->clks);
> +
> +       return 0;
> +}
> +EXPORT_SYMBOL_GPL(mt7986_afe_disable_clock);
> diff --git a/sound/soc/mediatek/mt7986/mt7986-afe-clk.h b/sound/soc/mediatek/mt7986/mt7986-afe-clk.h
> new file mode 100644
> index 000000000000..2f15b7a54bdc
> --- /dev/null
> +++ b/sound/soc/mediatek/mt7986/mt7986-afe-clk.h
> @@ -0,0 +1,18 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * mt7986-afe-clk.h  --  MediaTek 7986 afe clock ctrl definition
> + *
> + * Copyright (c) 2021 MediaTek Inc.
> + * Author: Vic Wu <vic.wu@...iatek.com>
> + *         Maso Huang <maso.huang@...iatek.com>
> + */
> +
> +#ifndef _MT7986_AFE_CLK_H_
> +#define _MT7986_AFE_CLK_H_
> +
> +struct mtk_base_afe;
> +
> +int mt7986_init_clock(struct mtk_base_afe *afe);
> +int mt7986_afe_enable_clock(struct mtk_base_afe *afe);
> +int mt7986_afe_disable_clock(struct mtk_base_afe *afe);
> +#endif
> --
> 2.18.0
> 
> 
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> linux-arm-kernel@...ts.infradead.org
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