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         if (ucontrol->value.enumerated.item[0] >= e->items)
  49                 return -EINVAL;
  50
  51         mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]);
  52         changed = snd_soc_component_test_bits(component, e->reg,
  53                                               CTRL0_I2S_DAT_SEL,
  54                                               FIELD_PREP(CTRL0_I2S_DAT_SEL,
  55                                                          mux));
  56
  57         if (!changed)
  58                 return 0;
  59
  60         /* Force disconnect of the mux while updating */
  61         snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
  62
  63         snd_soc_component_update_bits(component, e->reg,
  64                                       CTRL0_I2S_DAT_SEL |
  65                                       CTRL0_I2S_LRCLK_SEL |
  66                                       CTRL0_I2S_BCLK_SEL,
  67                                       FIELD_PREP(CTRL0_I2S_DAT_SEL, mux) |
  68                                       FIELD_PREP(CTRL0_I2S_LRCLK_SEL, mux) |
  69                                       FIELD_PREP(CTRL0_I2S_BCLK_SEL, mux));
  70
  71         snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
  72
  73         return 1;
  74 }
  75
  76 static SOC_ENUM_SINGLE_DECL(g12a_tohdmitx_i2s_mux_enum, TOHDMITX_CTRL0,
  77                             CTRL0_I2S_DAT_SEL_SHIFT,
  78                             g12a_tohdmitx_i2s_mux_texts);
  79
  80 static const struct snd_kcontrol_new g12a_tohdmitx_i2s_mux =
  81         SOC_DAPM_ENUM_EXT("I2S Source", g12a_tohdmitx_i2s_mux_enum,
  82                           snd_soc_dapm_get_enum_double,
  83                           g12a_tohdmitx_i2s_mux_put_enum);
  84
  85 static const char * const g12a_tohdmitx_spdif_mux_texts[] = {
  86         "SPDIF A", "SPDIF B",
  87 };
  88
  89 static int g12a_tohdmitx_spdif_mux_put_enum(struct snd_kcontrol *kcontrol,
  90                                             struct snd_ctl_elem_value *ucontrol)
  91 {
  92         struct snd_soc_component *component =
  93                 snd_soc_dapm_kcontrol_component(kcontrol);
  94         struct snd_soc_dapm_context *dapm =
  95                 snd_soc_dapm_kcontrol_dapm(kcontrol);
  96         struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
  97         unsigned int mux, changed;
  98
  99         if (ucontrol->value.enumerated.item[0] >= e->items)
 100                 return -EINVAL;
 101
 102         mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]);
 103         changed = snd_soc_component_test_bits(component, TOHDMITX_CTRL0,
 104                                               CTRL0_SPDIF_SEL,
 105                                               FIELD_PREP(CTRL0_SPDIF_SEL, mux));
 106
 107         if (!changed)
 108                 return 0;
 109
 110         /* Force disconnect of the mux while updating */
 111         snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
 112
 113         snd_soc_component_update_bits(component, TOHDMITX_CTRL0,
 114                                       CTRL0_SPDIF_SEL |
 115                                       CTRL0_SPDIF_CLK_SEL,
 116                                       FIELD_PREP(CTRL0_SPDIF_SEL, mux) |
 117                                       FIELD_PREP(CTRL0_SPDIF_CLK_SEL, mux));
 118
 119         snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
 120
 121         return 1;
 122 }
 123
 124 static SOC_ENUM_SINGLE_DECL(g12a_tohdmitx_spdif_mux_enum, TOHDMITX_CTRL0,
 125                             CTRL0_SPDIF_SEL_SHIFT,
 126                             g12a_tohdmitx_spdif_mux_texts);
 127
 128 static const struct snd_kcontrol_new g12a_tohdmitx_spdif_mux =
 129         SOC_DAPM_ENUM_EXT("SPDIF Source", g12a_tohdmitx_spdif_mux_enum,
 130                           snd_soc_dapm_get_enum_double,
 131                           g12a_tohdmitx_spdif_mux_put_enum);
 132
 133 static const struct snd_kcontrol_new g12a_tohdmitx_out_enable =
 134         SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOHDMITX_CTRL0,
 135                                     CTRL0_ENABLE_SHIFT, 1, 0);
 136
 137 static const struct snd_soc_dapm_widget g12a_tohdmitx_widgets[] = {
 138         SND_SOC_DAPM_MUX("I2S SRC", SND_SOC_NOPM, 0, 0,
 139                          &g12a_tohdmitx_i2s_mux),
 140         SND_SOC_DAPM_SWITCH("I2S OUT EN", SND_SOC_NOPM, 0, 0,
 141                             &g12a_tohdmitx_out_enable),
 142         SND_SOC_DAPM_MUX("SPDIF SRC", SND_SOC_NOPM, 0, 0,
 143                          &g12a_tohdmitx_spdif_mux),
 144         SND_SOC_DAPM_SWITCH("SPDIF OUT EN", SND_SOC_NOPM, 0, 0,
 145                             &g12a_tohdmitx_out_enable),
 146 };
 147
 148 static const struct snd_soc_dai_ops g12a_tohdmitx_input_ops = {
 149         .probe          = meson_codec_glue_input_dai_probe,
 150         .remove         = meson_codec_glue_input_dai_remove,
 151         .hw_params      = meson_codec_glue_input_hw_params,
 152         .set_fmt        = meson_codec_glue_input_set_fmt,
 153 };
 154
 155 static const struct snd_soc_dai_ops g12a_tohdmitx_output_ops = {
 156         .startup        = meson_codec_glue_output_startup,
 157 };
 158
 159 #define TOHDMITX_SPDIF_FORMATS                                  \
 160         (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |   \
 161          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE)
 162
 163 #define TOHDMITX_I2S_FORMATS                                    \
 164         (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |   \
 165          SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE |   \
 166          SNDRV_PCM_FMTBIT_S32_LE)
 167
 168 #define TOHDMITX_STREAM(xname, xsuffix, xfmt, xchmax)           \
 169 {                                                               \
 170         .stream_name    = xname " " xsuffix,                    \
 171         .channels_min   = 1,                                    \
 172         .channels_max   = (xchmax),                             \
 173         .rate_min       = 8000,                                 \
 174         .rate_max       = 192000,                               \
 175         .formats        = (xfmt),                               \
 176 }
 177
 178 #define TOHDMITX_IN(xname, xid, xfmt, xchmax) {                         \
 179         .name = xname,                                                  \
 180         .id = (xid),                                                    \
 181         .playback = TOHDMITX_STREAM(xname, "Playback", xfmt, xchmax),   \
 182         .ops = &g12a_tohdmitx_input_ops,                                \
 183 }
 184
 185 #define TOHDMITX_OUT(xname, xid, xfmt, xchmax) {                        \
 186         .name = xname,                                                  \
 187         .id = (xid),                                                    \
 188         .capture = TOHDMITX_STREAM(xname, "Capture", xfmt, xchmax),     \
 189         .ops = &g12a_tohdmitx_output_ops,                               \
 190 }
 191
 192 static struct snd_soc_dai_driver g12a_tohdmitx_dai_drv[] = {
 193         TOHDMITX_IN("I2S IN A", TOHDMITX_I2S_IN_A,
 194                     TOHDMITX_I2S_FORMATS, 8),
 195         TOHDMITX_IN("I2S IN B", TOHDMITX_I2S_IN_B,
 196                     TOHDMITX_I2S_FORMATS, 8),
 197         TOHDMITX_IN("I2S IN C", TOHDMITX_I2S_IN_C,
 198                     TOHDMITX_I2S_FORMATS, 8),
 199         TOHDMITX_OUT("I2S OUT", TOHDMITX_I2S_OUT,
 200                      TOHDMITX_I2S_FORMATS, 8),
 201         TOHDMITX_IN("SPDIF IN A", TOHDMITX_SPDIF_IN_A,
 202                     TOHDMITX_SPDIF_FORMATS, 2),
 203         TOHDMITX_IN("SPDIF IN B", TOHDMITX_SPDIF_IN_B,
 204                     TOHDMITX_SPDIF_FORMATS, 2),
 205         TOHDMITX_OUT("SPDIF OUT", TOHDMITX_SPDIF_OUT,
 206                      TOHDMITX_SPDIF_FORMATS, 2),
 207 };
 208
 209 static int g12a_tohdmi_component_probe(struct snd_soc_component *c)
 210 {
 211         /* Initialize the static clock parameters */
 212         return snd_soc_component_write(c, TOHDMITX_CTRL0,
 213                      CTRL0_I2S_BLK_CAP_INV | CTRL0_SPDIF_CLK_CAP_INV);
 214 }
 215
 216 static const struct snd_soc_dapm_route g12a_tohdmitx_routes[] = {
 217         { "I2S SRC", "I2S A", "I2S IN A Playback" },
 218         { "I2S SRC", "I2S B", "I2S IN B Playback" },
 219         { "I2S SRC", "I2S C", "I2S IN C Playback" },
 220         { "I2S OUT EN", "Switch", "I2S SRC" },
 221         { "I2S OUT Capture", NULL, "I2S OUT EN" },
 222         { "SPDIF SRC", "SPDIF A", "SPDIF IN A Playback" },
 223         { "SPDIF SRC", "SPDIF B", "SPDIF IN B Playback" },
 224         { "SPDIF OUT EN", "Switch", "SPDIF SRC" },
 225         { "SPDIF OUT Capture", NULL, "SPDIF OUT EN" },
 226 };
 227
 228 static const struct snd_soc_component_driver g12a_tohdmitx_component_drv = {
 229         .probe                  = g12a_tohdmi_component_probe,
 230         .dapm_widgets           = g12a_tohdmitx_widgets,
 231         .num_dapm_widgets       = ARRAY_SIZE(g12a_tohdmitx_widgets),
 232         .dapm_routes            = g12a_tohdmitx_routes,
 233         .num_dapm_routes        = ARRAY_SIZE(g12a_tohdmitx_routes),
 234         .endianness             = 1,
 235 };
 236
 237 static const struct regmap_config g12a_tohdmitx_regmap_cfg = {
 238         .reg_bits       = 32,
 239         .val_bits       = 32,
 240         .reg_stride     = 4,
 241 };
 242
 243 static const struct of_device_id g12a_tohdmitx_of_match[] = {
 244         { .compatible = "amlogic,g12a-tohdmitx", },
 245         {}
 246 };
 247 MODULE_DEVICE_TABLE(of, g12a_tohdmitx_of_match);
 248
 249 static int g12a_tohdmitx_probe(struct platform_device *pdev)
 250 {
 251         struct device *dev = &pdev->dev;
 252         void __iomem *regs;
 253         struct regmap *map;
 254         int ret;
 255
 256         ret = device_reset(dev);
 257         if (ret)
 258                 return ret;
 259
 260         regs = devm_platform_ioremap_resource(pdev, 0);
 261         if (IS_ERR(regs))
 262                 return PTR_ERR(regs);
 263
 264         map = devm_regmap_init_mmio(dev, regs, &g12a_tohdmitx_regmap_cfg);
 265         if (IS_ERR(map)) {
 266                 dev_err(dev, "failed to init regmap: %ld\n",
 267                         PTR_ERR(map));
 268                 return PTR_ERR(map);
 269         }
 270
 271         return devm_snd_soc_register_component(dev,
 272                         &g12a_tohdmitx_component_drv, g12a_tohdmitx_dai_drv,
 273                         ARRAY_SIZE(g12a_tohdmitx_dai_drv));
 274 }
 275
 276 static struct platform_driver g12a_tohdmitx_pdrv = {
 277         .driver = {
 278                 .name = G12A_TOHDMITX_DRV_NAME,
 279                 .of_match_table = g12a_tohdmitx_of_match,
 280         },
 281         .probe = g12a_tohdmitx_probe,
 282 };
 283 module_platform_driver(g12a_tohdmitx_pdrv);
 284
 285 MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
 286 MODULE_DESCRIPTION("Amlogic G12a To HDMI Tx Control Codec Driver");
 287 MODULE_LICENSE("GPL v2");