[PATCH v3 5/6] ASoC: meson: s4: Add s4 tocodec driver

[Jiebing Chen]

在 2025/3/6 23:58, Jerome Brunet 写道:
> [ EXTERNAL EMAIL ]
>
> On Fri 28 Feb 2025 at 16:04, jiebing chen via B4 Relay <devnull+jiebing.chen.amlogic.com at kernel.org> wrote:
>
>> From: jiebing chen <jiebing.chen at amlogic.com>
>>
>> S4 tocodec support 8 lane to input, It need to enable
>> bclk and mclk control bit when work
>>
>> Signed-off-by: jiebing chen <jiebing.chen at amlogic.com>
>> ---
>>   sound/soc/meson/g12a-toacodec.c | 51 +++++++++++++++++++++++++++++++++++++++++
>>   1 file changed, 51 insertions(+)
>>
>> diff --git a/sound/soc/meson/g12a-toacodec.c b/sound/soc/meson/g12a-toacodec.c
>> index 531bb8707a3ec4c47814d6a0676d5c62c705da75..41eef9980059285275f0189a06469fc694775955 100644
>> --- a/sound/soc/meson/g12a-toacodec.c
>> +++ b/sound/soc/meson/g12a-toacodec.c
>> @@ -41,6 +41,9 @@
>>   #define  CTRL0_BCLK_SEL_LSB          4
>>   #define  CTRL0_MCLK_SEL                      GENMASK(2, 0)
>>
>> +#define CTRL0_BCLK_ENABLE_SHIFT              30
>> +#define CTRL0_MCLK_ENABLE_SHIFT              29
>> +
>>   #define TOACODEC_OUT_CHMAX           2
>>
>>   struct g12a_toacodec {
>> @@ -129,6 +132,10 @@ static const struct snd_kcontrol_new g12a_toacodec_out_enable =
>>        SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOACODEC_CTRL0,
>>                                    CTRL0_ENABLE_SHIFT, 1, 0);
>>
>> +static const struct snd_kcontrol_new s4_toacodec_clk_enable =
>> +     SOC_DAPM_DOUBLE("Switch", TOACODEC_CTRL0,
>> +                     CTRL0_BCLK_ENABLE_SHIFT, CTRL0_MCLK_ENABLE_SHIFT, 1, 0);
>> +
>>   static const struct snd_soc_dapm_widget g12a_toacodec_widgets[] = {
>>        SND_SOC_DAPM_MUX("SRC", SND_SOC_NOPM, 0, 0,
>>                         &g12a_toacodec_mux),
>> @@ -143,6 +150,15 @@ static const struct snd_soc_dapm_widget sm1_toacodec_widgets[] = {
>>                            &g12a_toacodec_out_enable),
>>   };
>>
>> +static const struct snd_soc_dapm_widget s4_toacodec_widgets[] = {
>> +     SND_SOC_DAPM_MUX("SRC", SND_SOC_NOPM, 0, 0,
>> +                      &sm1_toacodec_mux),
>> +     SND_SOC_DAPM_SWITCH("OUT EN", SND_SOC_NOPM, 0, 0,
>> +                         &g12a_toacodec_out_enable),
>> +     SND_SOC_DAPM_SWITCH("CLK EN", SND_SOC_NOPM, 0, 0,
>> +                         &s4_toacodec_clk_enable),
> I don't see a reason for the user to control that.
>
> A user controls if the component is enable or not, and possibly select
> the lane ... but that's it
>
> You could have to flipped automatically which dapm when the component is
> powered, that would make a lot more sense.

Hi,Jerome

Thank you for your suggestion. Can we design it as a supply widget for 
tocodec bclk and mclk control?

when dapm poweron, and supply widget power on, Users do not have to 
operate additional Kcontrols

>
>> +};
>> +
>>   static int g12a_toacodec_input_hw_params(struct snd_pcm_substream *substream,
>>                                         struct snd_pcm_hw_params *params,
>>                                         struct snd_soc_dai *dai)
>> @@ -228,6 +244,15 @@ static const struct snd_soc_dapm_route g12a_toacodec_routes[] = {
>>        { "OUT Capture", NULL, "OUT EN" },
>>   };
>>
>> +static const struct snd_soc_dapm_route s4_toacodec_routes[] = {
>> +     { "SRC", "I2S A", "IN A Playback" },
>> +     { "SRC", "I2S B", "IN B Playback" },
>> +     { "SRC", "I2S C", "IN C Playback" },
>> +     { "OUT EN", "Switch", "SRC" },
>> +     { "CLK EN", "Switch", "OUT EN" },
>> +     { "OUT Capture", NULL, "CLK EN" },
>> +};
>> +
>>   static const struct snd_kcontrol_new g12a_toacodec_controls[] = {
>>        SOC_SINGLE("Lane Select", TOACODEC_CTRL0, CTRL0_LANE_SEL, 3, 0),
>>   };
>> @@ -236,6 +261,10 @@ static const struct snd_kcontrol_new sm1_toacodec_controls[] = {
>>        SOC_SINGLE("Lane Select", TOACODEC_CTRL0, CTRL0_LANE_SEL_SM1, 3, 0),
>>   };
>>
>> +static const struct snd_kcontrol_new s4_toacodec_controls[] = {
>> +     SOC_SINGLE("Lane Select", TOACODEC_CTRL0, CTRL0_LANE_SEL_SM1, 7, 0),
>> +};
>> +
>>   static const struct snd_soc_component_driver g12a_toacodec_component_drv = {
>>        .probe                  = g12a_toacodec_component_probe,
>>        .controls               = g12a_toacodec_controls,
>> @@ -258,6 +287,17 @@ static const struct snd_soc_component_driver sm1_toacodec_component_drv = {
>>        .endianness             = 1,
>>   };
>>
>> +static const struct snd_soc_component_driver s4_toacodec_component_drv = {
>> +     .probe                  = sm1_toacodec_component_probe,
>> +     .controls               = s4_toacodec_controls,
>> +     .num_controls           = ARRAY_SIZE(s4_toacodec_controls),
>> +     .dapm_widgets           = s4_toacodec_widgets,
>> +     .num_dapm_widgets       = ARRAY_SIZE(s4_toacodec_widgets),
>> +     .dapm_routes            = s4_toacodec_routes,
>> +     .num_dapm_routes        = ARRAY_SIZE(s4_toacodec_routes),
>> +     .endianness             = 1,
>> +};
>> +
>>   static const struct regmap_config g12a_toacodec_regmap_cfg = {
>>        .reg_bits       = 32,
>>        .val_bits       = 32,
>> @@ -278,6 +318,13 @@ static const struct g12a_toacodec_match_data sm1_toacodec_match_data = {
>>        .field_bclk_sel = REG_FIELD(TOACODEC_CTRL0, 4, 6),
>>   };
>>
>> +static const struct g12a_toacodec_match_data s4_toacodec_match_data = {
>> +     .component_drv  = &s4_toacodec_component_drv,
>> +     .field_dat_sel  = REG_FIELD(TOACODEC_CTRL0, 19, 20),
>> +     .field_lrclk_sel = REG_FIELD(TOACODEC_CTRL0, 12, 14),
>> +     .field_bclk_sel = REG_FIELD(TOACODEC_CTRL0, 4, 6),
>> +};
>> +
>>   static const struct of_device_id g12a_toacodec_of_match[] = {
>>        {
>>                .compatible = "amlogic,g12a-toacodec",
>> @@ -287,6 +334,10 @@ static const struct of_device_id g12a_toacodec_of_match[] = {
>>                .compatible = "amlogic,sm1-toacodec",
>>                .data = &sm1_toacodec_match_data,
>>        },
>> +     {
>> +             .compatible = "amlogic,s4-toacodec",
>> +             .data = &s4_toacodec_match_data,
>> +     },
>>        {}
>>   };
>>   MODULE_DEVICE_TABLE(of, g12a_toacodec_of_match);
> --
> Jerome