sound/soc/meson/g12a-tohdmitx.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Copyright (c) 2019 BayLibre, SAS.
   4 // Author: Jerome Brunet <jbrunet@baylibre.com>
   5
   6 #include <linux/bitfield.h>
   7 #include <linux/clk.h>
   8 #include <linux/module.h>
   9 #include <sound/pcm_params.h>
  10 #include <linux/regmap.h>
  11 #include <linux/reset.h>
  12 #include <sound/soc.h>
  13 #include <sound/soc-dai.h>
  14
  15 #include <dt-bindings/sound/meson-g12a-tohdmitx.h>
  16 #include "meson-codec-glue.h"
  17
  18 #define G12A_TOHDMITX_DRV_NAME "g12a-tohdmitx"
  19
  20 #define TOHDMITX_CTRL0                  0x0
  21 #define  CTRL0_ENABLE_SHIFT             31
  22 #define  CTRL0_I2S_DAT_SEL_SHIFT        12
  23 #define  CTRL0_I2S_DAT_SEL              (0x3 << CTRL0_I2S_DAT_SEL_SHIFT)
  24 #define  CTRL0_I2S_LRCLK_SEL            GENMASK(9, 8)
  25 #define  CTRL0_I2S_BLK_CAP_INV          BIT(7)
  26 #define  CTRL0_I2S_BCLK_O_INV           BIT(6)
  27 #define  CTRL0_I2S_BCLK_SEL             GENMASK(5, 4)
  28 #define  CTRL0_SPDIF_CLK_CAP_INV        BIT(3)
  29 #define  CTRL0_SPDIF_CLK_O_INV          BIT(2)
  30 #define  CTRL0_SPDIF_SEL_SHIFT          1
  31 #define  CTRL0_SPDIF_SEL                (0x1 << CTRL0_SPDIF_SEL_SHIFT)
  32 #define  CTRL0_SPDIF_CLK_SEL            BIT(0)
  33
  34 static const char * const g12a_tohdmitx_i2s_mux_texts[] = {
  35         "I2S A", "I2S B", "I2S C",
  36 };
  37
  38 static int g12a_tohdmitx_i2s_mux_put_enum(struct snd_kcontrol *kcontrol,
  39                                    struct snd_ctl_elem_value *ucontrol)
  40 {
  41         struct snd_soc_component *component =
  42                 snd_soc_dapm_kcontrol_component(kcontrol);
  43         struct snd_soc_dapm_context *dapm =
  44                 snd_soc_dapm_kcontrol_dapm(kcontrol);
  45         struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
  46         unsigned int mux, changed;
  47
  48         mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]);
  49         changed = snd_soc_component_test_bits(component, e->reg,
  50                                               CTRL0_I2S_DAT_SEL,
  51                                               FIELD_PREP(CTRL0_I2S_DAT_SEL,
  52                                                          mux));
  53
  54         if (!changed)
  55                 return 0;
  56
  57         /* Force disconnect of the mux while updating */
  58         snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
  59
  60         snd_soc_component_update_bits(component, e->reg,
  61                                       CTRL0_I2S_DAT_SEL |
  62                                       CTRL0_I2S_LRCLK_SEL |
  63                                       CTRL0_I2S_BCLK_SEL,
  64                                       FIELD_PREP(CTRL0_I2S_DAT_SEL, mux) |
  65                                       FIELD_PREP(CTRL0_I2S_LRCLK_SEL, mux) |
  66                                       FIELD_PREP(CTRL0_I2S_BCLK_SEL, mux));
  67
  68         snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
  69
  70         return 0;
  71 }
  72
  73 static SOC_ENUM_SINGLE_DECL(g12a_tohdmitx_i2s_mux_enum, TOHDMITX_CTRL0,
  74                             CTRL0_I2S_DAT_SEL_SHIFT,
  75                             g12a_tohdmitx_i2s_mux_texts);
  76
  77 static const struct snd_kcontrol_new g12a_tohdmitx_i2s_mux =
  78         SOC_DAPM_ENUM_EXT("I2S Source", g12a_tohdmitx_i2s_mux_enum,
  79                           snd_soc_dapm_get_enum_double,
  80                           g12a_tohdmitx_i2s_mux_put_enum);
  81
  82 static const char * const g12a_tohdmitx_spdif_mux_texts[] = {
  83         "SPDIF A", "SPDIF B",
  84 };
  85
  86 static int g12a_tohdmitx_spdif_mux_put_enum(struct snd_kcontrol *kcontrol,
  87                                             struct snd_ctl_elem_value *ucontrol)
  88 {
  89         struct snd_soc_component *component =
  90                 snd_soc_dapm_kcontrol_component(kcontrol);
  91         struct snd_soc_dapm_context *dapm =
  92                 snd_soc_dapm_kcontrol_dapm(kcontrol);
  93         struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
  94         unsigned int mux, changed;
  95
  96         mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]);
  97         changed = snd_soc_component_test_bits(component, TOHDMITX_CTRL0,
  98                                               CTRL0_SPDIF_SEL,
  99                                               FIELD_PREP(CTRL0_SPDIF_SEL, mux));
 100
 101         if (!changed)
 102                 return 0;
 103
 104         /* Force disconnect of the mux while updating */
 105         snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
 106
 107         snd_soc_component_update_bits(component, TOHDMITX_CTRL0,
 108                                       CTRL0_SPDIF_SEL |
 109                                       CTRL0_SPDIF_CLK_SEL,
 110                                       FIELD_PREP(CTRL0_SPDIF_SEL, mux) |
 111                                       FIELD_PREP(CTRL0_SPDIF_CLK_SEL, mux));
 112
 113         snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
 114
 115         return 0;
 116 }
 117
 118 static SOC_ENUM_SINGLE_DECL(g12a_tohdmitx_spdif_mux_enum, TOHDMITX_CTRL0,
 119                             CTRL0_SPDIF_SEL_SHIFT,
 120                             g12a_tohdmitx_spdif_mux_texts);
 121
 122 static const struct snd_kcontrol_new g12a_tohdmitx_spdif_mux =
 123         SOC_DAPM_ENUM_EXT("SPDIF Source", g12a_tohdmitx_spdif_mux_enum,
 124                           snd_soc_dapm_get_enum_double,
 125                           g12a_tohdmitx_spdif_mux_put_enum);
 126
 127 static const struct snd_kcontrol_new g12a_tohdmitx_out_enable =
 128         SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOHDMITX_CTRL0,
 129                                     CTRL0_ENABLE_SHIFT, 1, 0);
 130
 131 static const struct snd_soc_dapm_widget g12a_tohdmitx_widgets[] = {
 132         SND_SOC_DAPM_MUX("I2S SRC", SND_SOC_NOPM, 0, 0,
 133                          &g12a_tohdmitx_i2s_mux),
 134         SND_SOC_DAPM_SWITCH("I2S OUT EN", SND_SOC_NOPM, 0, 0,
 135                             &g12a_tohdmitx_out_enable),
 136         SND_SOC_DAPM_MUX("SPDIF SRC", SND_SOC_NOPM, 0, 0,
 137                          &g12a_tohdmitx_spdif_mux),
 138         SND_SOC_DAPM_SWITCH("SPDIF OUT EN", SND_SOC_NOPM, 0, 0,
 139                             &g12a_tohdmitx_out_enable),
 140 };
 141
 142 static const struct snd_soc_dai_ops g12a_tohdmitx_input_ops = {
 143         .hw_params      = meson_codec_glue_input_hw_params,
 144         .set_fmt        = meson_codec_glue_input_set_fmt,
 145 };
 146
 147 static const struct snd_soc_dai_ops g12a_tohdmitx_output_ops = {
 148         .startup        = meson_codec_glue_output_startup,
 149 };
 150
 151 #define TOHDMITX_SPDIF_FORMATS                                  \
 152         (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |   \
 153          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE)
 154
 155 #define TOHDMITX_I2S_FORMATS                                    \
 156         (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |   \
 157          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE |   \
 158          SNDRV_PCM_FMTBIT_S32_LE)
 159
 160 #define TOHDMITX_STREAM(xname, xsuffix, xfmt, xchmax)           \
 161 {                                                               \
 162         .stream_name    = xname " " xsuffix,                    \
 163         .channels_min   = 1,                                    \
 164         .channels_max   = (xchmax),                             \
 165         .rate_min       = 8000,                                 \
 166         .rate_max       = 192000,                               \
 167         .formats        = (xfmt),                               \
 168 }
 169
 170 #define TOHDMITX_IN(xname, xid, xfmt, xchmax) {                         \
 171         .name = xname,                                                  \
 172         .id = (xid),                                                    \
 173         .playback = TOHDMITX_STREAM(xname, "Playback", xfmt, xchmax),   \
 174         .ops = &g12a_tohdmitx_input_ops,                                \
 175         .probe = meson_codec_glue_input_dai_probe,                      \
 176         .remove = meson_codec_glue_input_dai_remove,                    \
 177 }
 178
 179 #define TOHDMITX_OUT(xname, xid, xfmt, xchmax) {                        \
 180         .name = xname,                                                  \
 181         .id = (xid),                                                    \
 182         .capture = TOHDMITX_STREAM(xname, "Capture", xfmt, xchmax),     \
 183         .ops = &g12a_tohdmitx_output_ops,                               \
 184 }
 185
 186 static struct snd_soc_dai_driver g12a_tohdmitx_dai_drv[] = {
 187         TOHDMITX_IN("I2S IN A", TOHDMITX_I2S_IN_A,
 188                     TOHDMITX_I2S_FORMATS, 8),
 189         TOHDMITX_IN("I2S IN B", TOHDMITX_I2S_IN_B,
 190                     TOHDMITX_I2S_FORMATS, 8),
 191         TOHDMITX_IN("I2S IN C", TOHDMITX_I2S_IN_C,
 192                     TOHDMITX_I2S_FORMATS, 8),
 193         TOHDMITX_OUT("I2S OUT", TOHDMITX_I2S_OUT,
 194                      TOHDMITX_I2S_FORMATS, 8),
 195         TOHDMITX_IN("SPDIF IN A", TOHDMITX_SPDIF_IN_A,
 196                     TOHDMITX_SPDIF_FORMATS, 2),
 197         TOHDMITX_IN("SPDIF IN B", TOHDMITX_SPDIF_IN_B,
 198                     TOHDMITX_SPDIF_FORMATS, 2),
 199         TOHDMITX_OUT("SPDIF OUT", TOHDMITX_SPDIF_OUT,
 200                      TOHDMITX_SPDIF_FORMATS, 2),
 201 };
 202
 203 static int g12a_tohdmi_component_probe(struct snd_soc_component *c)
 204 {
 205         /* Initialize the static clock parameters */
 206         return snd_soc_component_write(c, TOHDMITX_CTRL0,
 207                      CTRL0_I2S_BLK_CAP_INV | CTRL0_SPDIF_CLK_CAP_INV);
 208 }
 209
 210 static const struct snd_soc_dapm_route g12a_tohdmitx_routes[] = {
 211         { "I2S SRC", "I2S A", "I2S IN A Playback" },
 212         { "I2S SRC", "I2S B", "I2S IN B Playback" },
 213         { "I2S SRC", "I2S C", "I2S IN C Playback" },
 214         { "I2S OUT EN", "Switch", "I2S SRC" },
 215         { "I2S OUT Capture", NULL, "I2S OUT EN" },
 216         { "SPDIF SRC", "SPDIF A", "SPDIF IN A Playback" },
 217         { "SPDIF SRC", "SPDIF B", "SPDIF IN B Playback" },
 218         { "SPDIF OUT EN", "Switch", "SPDIF SRC" },
 219         { "SPDIF OUT Capture", NULL, "SPDIF OUT EN" },
 220 };
 221
 222 static const struct snd_soc_component_driver g12a_tohdmitx_component_drv = {
 223         .probe                  = g12a_tohdmi_component_probe,
 224         .dapm_widgets           = g12a_tohdmitx_widgets,
 225         .num_dapm_widgets       = ARRAY_SIZE(g12a_tohdmitx_widgets),
 226         .dapm_routes            = g12a_tohdmitx_routes,
 227         .num_dapm_routes        = ARRAY_SIZE(g12a_tohdmitx_routes),
 228         .endianness             = 1,
 229         .non_legacy_dai_naming  = 1,
 230 };
 231
 232 static const struct regmap_config g12a_tohdmitx_regmap_cfg = {
 233         .reg_bits       = 32,
 234         .val_bits       = 32,
 235         .reg_stride     = 4,
 236 };
 237
 238 static const struct of_device_id g12a_tohdmitx_of_match[] = {
 239         { .compatible = "amlogic,g12a-tohdmitx", },
 240         {}
 241 };
 242 MODULE_DEVICE_TABLE(of, g12a_tohdmitx_of_match);
 243
 244 static int g12a_tohdmitx_probe(struct platform_device *pdev)
 245 {
 246         struct device *dev = &pdev->dev;
 247         void __iomem *regs;
 248         struct regmap *map;
 249         int ret;
 250
 251         ret = device_reset(dev);
 252         if (ret)
 253                 return ret;
 254
 255         regs = devm_platform_ioremap_resource(pdev, 0);
 256         if (IS_ERR(regs))
 257                 return PTR_ERR(regs);
 258
 259         map = devm_regmap_init_mmio(dev, regs, &g12a_tohdmitx_regmap_cfg);
 260         if (IS_ERR(map)) {
 261                 dev_err(dev, "failed to init regmap: %ld\n",
 262                         PTR_ERR(map));
 263                 return PTR_ERR(map);
 264         }
 265
 266         return devm_snd_soc_register_component(dev,
 267                         &g12a_tohdmitx_component_drv, g12a_tohdmitx_dai_drv,
 268                         ARRAY_SIZE(g12a_tohdmitx_dai_drv));
 269 }
 270
 271 static struct platform_driver g12a_tohdmitx_pdrv = {
 272         .driver = {
 273                 .name = G12A_TOHDMITX_DRV_NAME,
 274                 .of_match_table = g12a_tohdmitx_of_match,
 275         },
 276         .probe = g12a_tohdmitx_probe,
 277 };
 278 module_platform_driver(g12a_tohdmitx_pdrv);
 279
 280 MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
 281 MODULE_DESCRIPTION("Amlogic G12a To HDMI Tx Control Codec Driver");
 282 MODULE_LICENSE("GPL v2");