// SPDX-License-Identifier: GPL-2.0
//
// MediaTek ALSA SoC Audio DAI HW Gain Control
//
// Copyright (c) 2022 MediaTek Inc.
// Author: Jiaxin Yu <[email protected]>
#include <linux/regmap.h>
#include "mt8186-afe-common.h"
#include "mt8186-interconnection.h"
#define HW_GAIN_1_EN_W_NAME "HW GAIN 1 Enable"
#define HW_GAIN_2_EN_W_NAME "HW GAIN 2 Enable"
/* dai component */
static const struct snd_kcontrol_new mtk_hw_gain1_in_ch1_mix[] = {
SOC_DAPM_SINGLE_AUTODISABLE("CONNSYS_I2S_CH1 Switch", AFE_CONN13_1,
I_CONNSYS_I2S_CH1, 1, 0),
};
static const struct snd_kcontrol_new mtk_hw_gain1_in_ch2_mix[] = {
SOC_DAPM_SINGLE_AUTODISABLE("CONNSYS_I2S_CH2 Switch", AFE_CONN14_1,
I_CONNSYS_I2S_CH2, 1, 0),
};
static const struct snd_kcontrol_new mtk_hw_gain2_in_ch1_mix[] = {
SOC_DAPM_SINGLE_AUTODISABLE("ADDA_UL_CH1 Switch", AFE_CONN15,
I_ADDA_UL_CH1, 1, 0),
};
static const struct snd_kcontrol_new mtk_hw_gain2_in_ch2_mix[] = {
SOC_DAPM_SINGLE_AUTODISABLE("ADDA_UL_CH2 Switch", AFE_CONN16,
I_ADDA_UL_CH2, 1, 0),
};
static int mtk_hw_gain_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol,
int event)
{
struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
unsigned int gain_cur;
unsigned int gain_con1;
dev_dbg(cmpnt->dev, "%s(), name %s, event 0x%x\n",
__func__, w->name, event);
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
if (snd_soc_dapm_widget_name_cmp(w, HW_GAIN_1_EN_W_NAME) == 0) {
gain_cur = AFE_GAIN1_CUR;
gain_con1 = AFE_GAIN1_CON1;
} else {
gain_cur = AFE_GAIN2_CUR;
gain_con1 = AFE_GAIN2_CON1;
}
/* let hw gain ramp up, set cur gain to 0 */
regmap_update_bits(afe->regmap, gain_cur, AFE_GAIN1_CUR_MASK_SFT, 0);
/* set target gain to 0 */
regmap_update_bits(afe->regmap, gain_con1, GAIN1_TARGET_MASK_SFT, 0);
break;
default:
break;
}
return 0;
}
static const struct snd_soc_dapm_widget mtk_dai_hw_gain_widgets[] = {
/* inter-connections */
SND_SOC_DAPM_MIXER("HW_GAIN1_IN_CH1", SND_SOC_NOPM, 0, 0,
mtk_hw_gain1_in_ch1_mix,
ARRAY_SIZE(mtk_hw_gain1_in_ch1_mix)),
SND_SOC_DAPM_MIXER("HW_GAIN1_IN_CH2", SND_SOC_NOPM, 0, 0,
mtk_hw_gain1_in_ch2_mix,
ARRAY_SIZE(mtk_hw_gain1_in_ch2_mix)),
SND_SOC_DAPM_MIXER("HW_GAIN2_IN_CH1", SND_SOC_NOPM, 0, 0,
mtk_hw_gain2_in_ch1_mix,
ARRAY_SIZE(mtk_hw_gain2_in_ch1_mix)),
SND_SOC_DAPM_MIXER("HW_GAIN2_IN_CH2", SND_SOC_NOPM, 0, 0,
mtk_hw_gain2_in_ch2_mix,
ARRAY_SIZE(mtk_hw_gain2_in_ch2_mix)),
SND_SOC_DAPM_SUPPLY(HW_GAIN_1_EN_W_NAME,
AFE_GAIN1_CON0, GAIN1_ON_SFT, 0,
mtk_hw_gain_event,
SND_SOC_DAPM_PRE_PMU),
SND_SOC_DAPM_SUPPLY(HW_GAIN_2_EN_W_NAME,
AFE_GAIN2_CON0, GAIN2_ON_SFT, 0,
mtk_hw_gain_event,
SND_SOC_DAPM_PRE_PMU),
SND_SOC_DAPM_INPUT("HW Gain 1 Out Endpoint"),
SND_SOC_DAPM_INPUT("HW Gain 2 Out Endpoint"),
SND_SOC_DAPM_OUTPUT("HW Gain 1 In Endpoint"),
};
static const struct snd_soc_dapm_route mtk_dai_hw_gain_routes[] = {
{"HW Gain 1 In", NULL, "HW_GAIN1_IN_CH1"},
{"HW Gain 1 In", NULL, "HW_GAIN1_IN_CH2"},
{"HW Gain 2 In", NULL, "HW_GAIN2_IN_CH1"},
{"HW Gain 2 In", NULL, "HW_GAIN2_IN_CH2"},
{"HW Gain 1 In", NULL, HW_GAIN_1_EN_W_NAME},
{"HW Gain 1 Out", NULL, HW_GAIN_1_EN_W_NAME},
{"HW Gain 2 In", NULL, HW_GAIN_2_EN_W_NAME},
{"HW Gain 2 Out", NULL, HW_GAIN_2_EN_W_NAME},
{"HW Gain 1 In Endpoint", NULL, "HW Gain 1 In"},
{"HW Gain 1 Out", NULL, "HW Gain 1 Out Endpoint"},
{"HW Gain 2 Out", NULL, "HW Gain 2 Out Endpoint"},
};
static const struct snd_kcontrol_new mtk_hw_gain_controls[] = {
SOC_SINGLE("HW Gain 1 Volume", AFE_GAIN1_CON1,
GAIN1_TARGET_SFT, GAIN1_TARGET_MASK, 0),
SOC_SINGLE("HW Gain 2 Volume", AFE_GAIN2_CON1,
GAIN2_TARGET_SFT, GAIN2_TARGET_MASK, 0),
};
/* dai ops */
static int mtk_dai_gain_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
unsigned int rate = params_rate(params);
unsigned int rate_reg = mt8186_rate_transform(afe->dev, rate, dai->id);
dev_dbg(afe->dev, "%s(), id %d, stream %d, rate %d\n",
__func__, dai->id, substream->stream, rate);
/* rate */
regmap_update_bits(afe->regmap,
dai->id == MT8186_DAI_HW_GAIN_1 ?
AFE_GAIN1_CON0 : AFE_GAIN2_CON0,
GAIN1_MODE_MASK_SFT,
rate_reg << GAIN1_MODE_SFT);
/* sample per step */
regmap_update_bits(afe->regmap,
dai->id == MT8186_DAI_HW_GAIN_1 ?
AFE_GAIN1_CON0 : AFE_GAIN2_CON0,
GAIN1_SAMPLE_PER_STEP_MASK_SFT,
(dai->id == MT8186_DAI_HW_GAIN_1 ? 0x40 : 0x0) <<
GAIN1_SAMPLE_PER_STEP_SFT);
return 0;
}
static const struct snd_soc_dai_ops mtk_dai_gain_ops = {
.hw_params = mtk_dai_gain_hw_params,
};
/* dai driver */
#define MTK_HW_GAIN_RATES (SNDRV_PCM_RATE_8000_48000 |\
SNDRV_PCM_RATE_88200 |\
SNDRV_PCM_RATE_96000 |\
SNDRV_PCM_RATE_176400 |\
SNDRV_PCM_RATE_192000)
#define MTK_HW_GAIN_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
SNDRV_PCM_FMTBIT_S24_LE |\
SNDRV_PCM_FMTBIT_S32_LE)
static struct snd_soc_dai_driver mtk_dai_gain_driver[] = {
{
.name = "HW Gain 1",
.id = MT8186_DAI_HW_GAIN_1,
.playback = {
.stream_name = "HW Gain 1 In",
.channels_min = 1,
.channels_max = 2,
.rates = MTK_HW_GAIN_RATES,
.formats = MTK_HW_GAIN_FORMATS,
},
.capture = {
.stream_name = "HW Gain 1 Out",
.channels_min = 1,
.channels_max = 2,
.rates = MTK_HW_GAIN_RATES,
.formats = MTK_HW_GAIN_FORMATS,
},
.ops = &mtk_dai_gain_ops,
.symmetric_rate = 1,
.symmetric_channels = 1,
.symmetric_sample_bits = 1,
},
{
.name = "HW Gain 2",
.id = MT8186_DAI_HW_GAIN_2,
.playback = {
.stream_name = "HW Gain 2 In",
.channels_min = 1,
.channels_max = 2,
.rates = MTK_HW_GAIN_RATES,
.formats = MTK_HW_GAIN_FORMATS,
},
.capture = {
.stream_name = "HW Gain 2 Out",
.channels_min = 1,
.channels_max = 2,
.rates = MTK_HW_GAIN_RATES,
.formats = MTK_HW_GAIN_FORMATS,
},
.ops = &mtk_dai_gain_ops,
.symmetric_rate = 1,
.symmetric_channels = 1,
.symmetric_sample_bits = 1,
},
};
int mt8186_dai_hw_gain_register(struct mtk_base_afe *afe)
{
struct mtk_base_afe_dai *dai;
dai = devm_kzalloc(afe->dev, sizeof(*dai), GFP_KERNEL);
if (!dai)
return -ENOMEM;
list_add(&dai->list, &afe->sub_dais);
dai->dai_drivers = mtk_dai_gain_driver;
dai->num_dai_drivers = ARRAY_SIZE(mtk_dai_gain_driver);
dai->controls = mtk_hw_gain_controls;
dai->num_controls = ARRAY_SIZE(mtk_hw_gain_controls);
dai->dapm_widgets = mtk_dai_hw_gain_widgets;
dai->num_dapm_widgets = ARRAY_SIZE(mtk_dai_hw_gain_widgets);
dai->dapm_routes = mtk_dai_hw_gain_routes;
dai->num_dapm_routes = ARRAY_SIZE(mtk_dai_hw_gain_routes);
return 0;
}
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