sound/soc/mediatek/mt8186/mt8186-dai-hw-gain.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // MediaTek ALSA SoC Audio DAI HW Gain Control
   4 //
   5 // Copyright (c) 2022 MediaTek Inc.
   6 // Author: Jiaxin Yu <jiaxin.yu@mediatek.com>
   7
   8 #include <linux/regmap.h>
   9 #include "mt8186-afe-common.h"
  10 #include "mt8186-interconnection.h"
  11
  12 #define HW_GAIN_1_EN_W_NAME "HW GAIN 1 Enable"
  13 #define HW_GAIN_2_EN_W_NAME "HW GAIN 2 Enable"
  14
  15 /* dai component */
  16 static const struct snd_kcontrol_new mtk_hw_gain1_in_ch1_mix[] = {
  17         SOC_DAPM_SINGLE_AUTODISABLE("CONNSYS_I2S_CH1 Switch", AFE_CONN13_1,
  18                                     I_CONNSYS_I2S_CH1, 1, 0),
  19 };
  20
  21 static const struct snd_kcontrol_new mtk_hw_gain1_in_ch2_mix[] = {
  22         SOC_DAPM_SINGLE_AUTODISABLE("CONNSYS_I2S_CH2 Switch", AFE_CONN14_1,
  23                                     I_CONNSYS_I2S_CH2, 1, 0),
  24 };
  25
  26 static const struct snd_kcontrol_new mtk_hw_gain2_in_ch1_mix[] = {
  27         SOC_DAPM_SINGLE_AUTODISABLE("ADDA_UL_CH1 Switch", AFE_CONN15,
  28                                     I_ADDA_UL_CH1, 1, 0),
  29 };
  30
  31 static const struct snd_kcontrol_new mtk_hw_gain2_in_ch2_mix[] = {
  32         SOC_DAPM_SINGLE_AUTODISABLE("ADDA_UL_CH2 Switch", AFE_CONN16,
  33                                     I_ADDA_UL_CH2, 1, 0),
  34 };
  35
  36 static int mtk_hw_gain_event(struct snd_soc_dapm_widget *w,
  37                              struct snd_kcontrol *kcontrol,
  38                              int event)
  39 {
  40         struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
  41         struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
  42         unsigned int gain_cur;
  43         unsigned int gain_con1;
  44
  45         dev_dbg(cmpnt->dev, "%s(), name %s, event 0x%x\n",
  46                 __func__, w->name, event);
  47
  48         switch (event) {
  49         case SND_SOC_DAPM_PRE_PMU:
  50                 if (snd_soc_dapm_widget_name_cmp(w, HW_GAIN_1_EN_W_NAME) == 0) {
  51                         gain_cur = AFE_GAIN1_CUR;
  52                         gain_con1 = AFE_GAIN1_CON1;
  53                 } else {
  54                         gain_cur = AFE_GAIN2_CUR;
  55                         gain_con1 = AFE_GAIN2_CON1;
  56                 }
  57
  58                 /* let hw gain ramp up, set cur gain to 0 */
  59                 regmap_update_bits(afe->regmap, gain_cur, AFE_GAIN1_CUR_MASK_SFT, 0);
  60
  61                 /* set target gain to 0 */
  62                 regmap_update_bits(afe->regmap, gain_con1, GAIN1_TARGET_MASK_SFT, 0);
  63                 break;
  64         default:
  65                 break;
  66         }
  67
  68         return 0;
  69 }
  70
  71 static const struct snd_soc_dapm_widget mtk_dai_hw_gain_widgets[] = {
  72         /* inter-connections */
  73         SND_SOC_DAPM_MIXER("HW_GAIN1_IN_CH1", SND_SOC_NOPM, 0, 0,
  74                            mtk_hw_gain1_in_ch1_mix,
  75                            ARRAY_SIZE(mtk_hw_gain1_in_ch1_mix)),
  76         SND_SOC_DAPM_MIXER("HW_GAIN1_IN_CH2", SND_SOC_NOPM, 0, 0,
  77                            mtk_hw_gain1_in_ch2_mix,
  78                            ARRAY_SIZE(mtk_hw_gain1_in_ch2_mix)),
  79         SND_SOC_DAPM_MIXER("HW_GAIN2_IN_CH1", SND_SOC_NOPM, 0, 0,
  80                            mtk_hw_gain2_in_ch1_mix,
  81                            ARRAY_SIZE(mtk_hw_gain2_in_ch1_mix)),
  82         SND_SOC_DAPM_MIXER("HW_GAIN2_IN_CH2", SND_SOC_NOPM, 0, 0,
  83                            mtk_hw_gain2_in_ch2_mix,
  84                            ARRAY_SIZE(mtk_hw_gain2_in_ch2_mix)),
  85
  86         SND_SOC_DAPM_SUPPLY(HW_GAIN_1_EN_W_NAME,
  87                             AFE_GAIN1_CON0, GAIN1_ON_SFT, 0,
  88                             mtk_hw_gain_event,
  89                             SND_SOC_DAPM_PRE_PMU),
  90
  91         SND_SOC_DAPM_SUPPLY(HW_GAIN_2_EN_W_NAME,
  92                             AFE_GAIN2_CON0, GAIN2_ON_SFT, 0,
  93                             mtk_hw_gain_event,
  94                             SND_SOC_DAPM_PRE_PMU),
  95
  96         SND_SOC_DAPM_INPUT("HW Gain 1 Out Endpoint"),
  97         SND_SOC_DAPM_INPUT("HW Gain 2 Out Endpoint"),
  98         SND_SOC_DAPM_OUTPUT("HW Gain 1 In Endpoint"),
  99 };
 100
 101 static const struct snd_soc_dapm_route mtk_dai_hw_gain_routes[] = {
 102         {"HW Gain 1 In", NULL, "HW_GAIN1_IN_CH1"},
 103         {"HW Gain 1 In", NULL, "HW_GAIN1_IN_CH2"},
 104         {"HW Gain 2 In", NULL, "HW_GAIN2_IN_CH1"},
 105         {"HW Gain 2 In", NULL, "HW_GAIN2_IN_CH2"},
 106
 107         {"HW Gain 1 In", NULL, HW_GAIN_1_EN_W_NAME},
 108         {"HW Gain 1 Out", NULL, HW_GAIN_1_EN_W_NAME},
 109         {"HW Gain 2 In", NULL, HW_GAIN_2_EN_W_NAME},
 110         {"HW Gain 2 Out", NULL, HW_GAIN_2_EN_W_NAME},
 111
 112         {"HW Gain 1 In Endpoint", NULL, "HW Gain 1 In"},
 113         {"HW Gain 1 Out", NULL, "HW Gain 1 Out Endpoint"},
 114         {"HW Gain 2 Out", NULL, "HW Gain 2 Out Endpoint"},
 115 };
 116
 117 static const struct snd_kcontrol_new mtk_hw_gain_controls[] = {
 118         SOC_SINGLE("HW Gain 1 Volume", AFE_GAIN1_CON1,
 119                    GAIN1_TARGET_SFT, GAIN1_TARGET_MASK, 0),
 120         SOC_SINGLE("HW Gain 2 Volume", AFE_GAIN2_CON1,
 121                    GAIN2_TARGET_SFT, GAIN2_TARGET_MASK, 0),
 122 };
 123
 124 /* dai ops */
 125 static int mtk_dai_gain_hw_params(struct snd_pcm_substream *substream,
 126                                   struct snd_pcm_hw_params *params,
 127                                   struct snd_soc_dai *dai)
 128 {
 129         struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 130         unsigned int rate = params_rate(params);
 131         unsigned int rate_reg = mt8186_rate_transform(afe->dev, rate, dai->id);
 132
 133         dev_dbg(afe->dev, "%s(), id %d, stream %d, rate %d\n",
 134                 __func__, dai->id, substream->stream, rate);
 135
 136         /* rate */
 137         regmap_update_bits(afe->regmap,
 138                            dai->id == MT8186_DAI_HW_GAIN_1 ?
 139                            AFE_GAIN1_CON0 : AFE_GAIN2_CON0,
 140                            GAIN1_MODE_MASK_SFT,
 141                            rate_reg << GAIN1_MODE_SFT);
 142
 143         /* sample per step */
 144         regmap_update_bits(afe->regmap,
 145                            dai->id == MT8186_DAI_HW_GAIN_1 ?
 146                            AFE_GAIN1_CON0 : AFE_GAIN2_CON0,
 147                            GAIN1_SAMPLE_PER_STEP_MASK_SFT,
 148                            (dai->id == MT8186_DAI_HW_GAIN_1 ? 0x40 : 0x0) <<
 149                            GAIN1_SAMPLE_PER_STEP_SFT);
 150
 151         return 0;
 152 }
 153
 154 static const struct snd_soc_dai_ops mtk_dai_gain_ops = {
 155         .hw_params = mtk_dai_gain_hw_params,
 156 };
 157
 158 /* dai driver */
 159 #define MTK_HW_GAIN_RATES (SNDRV_PCM_RATE_8000_48000 |\
 160                            SNDRV_PCM_RATE_88200 |\
 161                            SNDRV_PCM_RATE_96000 |\
 162                            SNDRV_PCM_RATE_176400 |\
 163                            SNDRV_PCM_RATE_192000)
 164
 165 #define MTK_HW_GAIN_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
 166                              SNDRV_PCM_FMTBIT_S24_LE |\
 167                              SNDRV_PCM_FMTBIT_S32_LE)
 168
 169 static struct snd_soc_dai_driver mtk_dai_gain_driver[] = {
 170         {
 171                 .name = "HW Gain 1",
 172                 .id = MT8186_DAI_HW_GAIN_1,
 173                 .playback = {
 174                         .stream_name = "HW Gain 1 In",
 175                         .channels_min = 1,
 176                         .channels_max = 2,
 177                         .rates = MTK_HW_GAIN_RATES,
 178                         .formats = MTK_HW_GAIN_FORMATS,
 179                 },
 180                 .capture = {
 181                         .stream_name = "HW Gain 1 Out",
 182                         .channels_min = 1,
 183                         .channels_max = 2,
 184                         .rates = MTK_HW_GAIN_RATES,
 185                         .formats = MTK_HW_GAIN_FORMATS,
 186                 },
 187                 .ops = &mtk_dai_gain_ops,
 188                 .symmetric_rate = 1,
 189                 .symmetric_channels = 1,
 190                 .symmetric_sample_bits = 1,
 191         },
 192         {
 193                 .name = "HW Gain 2",
 194                 .id = MT8186_DAI_HW_GAIN_2,
 195                 .playback = {
 196                         .stream_name = "HW Gain 2 In",
 197                         .channels_min = 1,
 198                         .channels_max = 2,
 199                         .rates = MTK_HW_GAIN_RATES,
 200                         .formats = MTK_HW_GAIN_FORMATS,
 201                 },
 202                 .capture = {
 203                         .stream_name = "HW Gain 2 Out",
 204                         .channels_min = 1,
 205                         .channels_max = 2,
 206                         .rates = MTK_HW_GAIN_RATES,
 207                         .formats = MTK_HW_GAIN_FORMATS,
 208                 },
 209                 .ops = &mtk_dai_gain_ops,
 210                 .symmetric_rate = 1,
 211                 .symmetric_channels = 1,
 212                 .symmetric_sample_bits = 1,
 213         },
 214 };
 215
 216 int mt8186_dai_hw_gain_register(struct mtk_base_afe *afe)
 217 {
 218         struct mtk_base_afe_dai *dai;
 219
 220         dai = devm_kzalloc(afe->dev, sizeof(*dai), GFP_KERNEL);
 221         if (!dai)
 222                 return -ENOMEM;
 223
 224         list_add(&dai->list, &afe->sub_dais);
 225
 226         dai->dai_drivers = mtk_dai_gain_driver;
 227         dai->num_dai_drivers = ARRAY_SIZE(mtk_dai_gain_driver);
 228
 229         dai->controls = mtk_hw_gain_controls;
 230         dai->num_controls = ARRAY_SIZE(mtk_hw_gain_controls);
 231         dai->dapm_widgets = mtk_dai_hw_gain_widgets;
 232         dai->num_dapm_widgets = ARRAY_SIZE(mtk_dai_hw_gain_widgets);
 233         dai->dapm_routes = mtk_dai_hw_gain_routes;
 234         dai->num_dapm_routes = ARRAY_SIZE(mtk_dai_hw_gain_routes);
 235         return 0;
 236 }