1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // Copyright (c) 2020 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/regulator/consumer.h> 12 #include <linux/reset.h> 13 #include <sound/soc.h> 14 #include <sound/soc-dai.h> 15 16 #include <dt-bindings/sound/meson-g12a-toacodec.h> 17 #include "axg-tdm.h" 18 #include "meson-codec-glue.h" 19 20 #define G12A_TOACODEC_DRV_NAME "g12a-toacodec" 21 22 #define TOACODEC_CTRL0 0x0 23 #define CTRL0_ENABLE_SHIFT 31 24 #define CTRL0_DAT_SEL_SM1_MSB 19 25 #define CTRL0_DAT_SEL_SM1_LSB 18 26 #define CTRL0_DAT_SEL_MSB 15 27 #define CTRL0_DAT_SEL_LSB 14 28 #define CTRL0_LANE_SEL_SM1 16 29 #define CTRL0_LANE_SEL 12 30 #define CTRL0_LRCLK_SEL_SM1_MSB 14 31 #define CTRL0_LRCLK_SEL_SM1_LSB 12 32 #define CTRL0_LRCLK_SEL_MSB 9 33 #define CTRL0_LRCLK_SEL_LSB 8 34 #define CTRL0_LRCLK_INV_SM1 BIT(10) 35 #define CTRL0_BLK_CAP_INV_SM1 BIT(9) 36 #define CTRL0_BLK_CAP_INV BIT(7) 37 #define CTRL0_BCLK_O_INV_SM1 BIT(8) 38 #define CTRL0_BCLK_O_INV BIT(6) 39 #define CTRL0_BCLK_SEL_SM1_MSB 6 40 #define CTRL0_BCLK_SEL_MSB 5 41 #define CTRL0_BCLK_SEL_LSB 4 42 #define CTRL0_MCLK_SEL GENMASK(2, 0) 43 44 #define TOACODEC_OUT_CHMAX 2 45 46 struct g12a_toacodec { 47 struct regmap_field *field_dat_sel; 48 struct regmap_field *field_lrclk_sel; 49 struct regmap_field *field_bclk_sel; 50 }; 51 52 struct g12a_toacodec_match_data { 53 const struct snd_soc_component_driver *component_drv; 54 struct reg_field field_dat_sel; 55 struct reg_field field_lrclk_sel; 56 struct reg_field field_bclk_sel; 57 }; 58 59 static const char * const g12a_toacodec_mux_texts[] = { 60 "I2S A", "I2S B", "I2S C", 61 }; 62 63 static int g12a_toacodec_mux_put_enum(struct snd_kcontrol *kcontrol, 64 struct snd_ctl_elem_value *ucontrol) 65 { 66 struct snd_soc_component *component = snd_soc_dapm_kcontrol_to_component(kcontrol); 67 struct g12a_toacodec *priv = snd_soc_component_get_drvdata(component); 68 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_to_dapm(kcontrol); 69 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; 70 unsigned int mux, reg; 71 72 if (ucontrol->value.enumerated.item[0] >= e->items) 73 return -EINVAL; 74 75 mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]); 76 regmap_field_read(priv->field_dat_sel, ®); 77 78 if (mux == reg) 79 return 0; 80 81 /* Force disconnect of the mux while updating */ 82 snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL); 83 84 regmap_field_write(priv->field_dat_sel, mux); 85 regmap_field_write(priv->field_lrclk_sel, mux); 86 regmap_field_write(priv->field_bclk_sel, mux); 87 88 /* 89 * FIXME: 90 * On this soc, the glue gets the MCLK directly from the clock 91 * controller instead of going the through the TDM interface. 92 * 93 * Here we assume interface A uses clock A, etc ... While it is 94 * true for now, it could be different. Instead the glue should 95 * find out the clock used by the interface and select the same 96 * source. For that, we will need regmap backed clock mux which 97 * is a work in progress 98 */ 99 snd_soc_component_update_bits(component, e->reg, 100 CTRL0_MCLK_SEL, 101 FIELD_PREP(CTRL0_MCLK_SEL, mux)); 102 103 snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL); 104 105 return 1; 106 } 107 108 static SOC_ENUM_SINGLE_DECL(g12a_toacodec_mux_enum, TOACODEC_CTRL0, 109 CTRL0_DAT_SEL_LSB, 110 g12a_toacodec_mux_texts); 111 112 static SOC_ENUM_SINGLE_DECL(sm1_toacodec_mux_enum, TOACODEC_CTRL0, 113 CTRL0_DAT_SEL_SM1_LSB, 114 g12a_toacodec_mux_texts); 115 116 static const struct snd_kcontrol_new g12a_toacodec_mux = 117 SOC_DAPM_ENUM_EXT("Source", g12a_toacodec_mux_enum, 118 snd_soc_dapm_get_enum_double, 119 g12a_toacodec_mux_put_enum); 120 121 static const struct snd_kcontrol_new sm1_toacodec_mux = 122 SOC_DAPM_ENUM_EXT("Source", sm1_toacodec_mux_enum, 123 snd_soc_dapm_get_enum_double, 124 g12a_toacodec_mux_put_enum); 125 126 static const struct snd_kcontrol_new g12a_toacodec_out_enable = 127 SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOACODEC_CTRL0, 128 CTRL0_ENABLE_SHIFT, 1, 0); 129 130 static const struct snd_soc_dapm_widget g12a_toacodec_widgets[] = { 131 SND_SOC_DAPM_MUX("SRC", SND_SOC_NOPM, 0, 0, 132 &g12a_toacodec_mux), 133 SND_SOC_DAPM_SWITCH("OUT EN", SND_SOC_NOPM, 0, 0, 134 &g12a_toacodec_out_enable), 135 }; 136 137 static const struct snd_soc_dapm_widget sm1_toacodec_widgets[] = { 138 SND_SOC_DAPM_MUX("SRC", SND_SOC_NOPM, 0, 0, 139 &sm1_toacodec_mux), 140 SND_SOC_DAPM_SWITCH("OUT EN", SND_SOC_NOPM, 0, 0, 141 &g12a_toacodec_out_enable), 142 }; 143 144 static int g12a_toacodec_input_hw_params(struct snd_pcm_substream *substream, 145 struct snd_pcm_hw_params *params, 146 struct snd_soc_dai *dai) 147 { 148 struct meson_codec_glue_input *data; 149 int ret; 150 151 ret = meson_codec_glue_input_hw_params(substream, params, dai); 152 if (ret) 153 return ret; 154 155 /* The glue will provide 1 lane out of the 4 to the output */ 156 data = meson_codec_glue_input_get_data(dai); 157 data->params.channels_min = min_t(unsigned int, TOACODEC_OUT_CHMAX, 158 data->params.channels_min); 159 data->params.channels_max = min_t(unsigned int, TOACODEC_OUT_CHMAX, 160 data->params.channels_max); 161 162 return 0; 163 } 164 165 static const struct snd_soc_dai_ops g12a_toacodec_input_ops = { 166 .probe = meson_codec_glue_input_dai_probe, 167 .remove = meson_codec_glue_input_dai_remove, 168 .hw_params = g12a_toacodec_input_hw_params, 169 .set_fmt = meson_codec_glue_input_set_fmt, 170 }; 171 172 static const struct snd_soc_dai_ops g12a_toacodec_output_ops = { 173 .startup = meson_codec_glue_output_startup, 174 }; 175 176 #define TOACODEC_STREAM(xname, xsuffix, xchmax) \ 177 { \ 178 .stream_name = xname " " xsuffix, \ 179 .channels_min = 1, \ 180 .channels_max = (xchmax), \ 181 .rate_min = 5512, \ 182 .rate_max = 192000, \ 183 .formats = AXG_TDM_FORMATS, \ 184 } 185 186 #define TOACODEC_INPUT(xname, xid) { \ 187 .name = xname, \ 188 .id = (xid), \ 189 .playback = TOACODEC_STREAM(xname, "Playback", 8), \ 190 .ops = &g12a_toacodec_input_ops, \ 191 } 192 193 #define TOACODEC_OUTPUT(xname, xid) { \ 194 .name = xname, \ 195 .id = (xid), \ 196 .capture = TOACODEC_STREAM(xname, "Capture", TOACODEC_OUT_CHMAX), \ 197 .ops = &g12a_toacodec_output_ops, \ 198 } 199 200 static struct snd_soc_dai_driver g12a_toacodec_dai_drv[] = { 201 TOACODEC_INPUT("IN A", TOACODEC_IN_A), 202 TOACODEC_INPUT("IN B", TOACODEC_IN_B), 203 TOACODEC_INPUT("IN C", TOACODEC_IN_C), 204 TOACODEC_OUTPUT("OUT", TOACODEC_OUT), 205 }; 206 207 static int g12a_toacodec_component_probe(struct snd_soc_component *c) 208 { 209 /* Initialize the static clock parameters */ 210 return snd_soc_component_write(c, TOACODEC_CTRL0, 211 CTRL0_BLK_CAP_INV); 212 } 213 214 static int sm1_toacodec_component_probe(struct snd_soc_component *c) 215 { 216 /* Initialize the static clock parameters */ 217 return snd_soc_component_write(c, TOACODEC_CTRL0, 218 CTRL0_BLK_CAP_INV_SM1); 219 } 220 221 static const struct snd_soc_dapm_route g12a_toacodec_routes[] = { 222 { "SRC", "I2S A", "IN A Playback" }, 223 { "SRC", "I2S B", "IN B Playback" }, 224 { "SRC", "I2S C", "IN C Playback" }, 225 { "OUT EN", "Switch", "SRC" }, 226 { "OUT Capture", NULL, "OUT EN" }, 227 }; 228 229 static const struct snd_kcontrol_new g12a_toacodec_controls[] = { 230 SOC_SINGLE("Lane Select", TOACODEC_CTRL0, CTRL0_LANE_SEL, 3, 0), 231 }; 232 233 static const struct snd_kcontrol_new sm1_toacodec_controls[] = { 234 SOC_SINGLE("Lane Select", TOACODEC_CTRL0, CTRL0_LANE_SEL_SM1, 3, 0), 235 }; 236 237 static const struct snd_soc_component_driver g12a_toacodec_component_drv = { 238 .probe = g12a_toacodec_component_probe, 239 .controls = g12a_toacodec_controls, 240 .num_controls = ARRAY_SIZE(g12a_toacodec_controls), 241 .dapm_widgets = g12a_toacodec_widgets, 242 .num_dapm_widgets = ARRAY_SIZE(g12a_toacodec_widgets), 243 .dapm_routes = g12a_toacodec_routes, 244 .num_dapm_routes = ARRAY_SIZE(g12a_toacodec_routes), 245 .endianness = 1, 246 }; 247 248 static const struct snd_soc_component_driver sm1_toacodec_component_drv = { 249 .probe = sm1_toacodec_component_probe, 250 .controls = sm1_toacodec_controls, 251 .num_controls = ARRAY_SIZE(sm1_toacodec_controls), 252 .dapm_widgets = sm1_toacodec_widgets, 253 .num_dapm_widgets = ARRAY_SIZE(sm1_toacodec_widgets), 254 .dapm_routes = g12a_toacodec_routes, 255 .num_dapm_routes = ARRAY_SIZE(g12a_toacodec_routes), 256 .endianness = 1, 257 }; 258 259 static const struct regmap_config g12a_toacodec_regmap_cfg = { 260 .reg_bits = 32, 261 .val_bits = 32, 262 .reg_stride = 4, 263 }; 264 265 static const struct g12a_toacodec_match_data g12a_toacodec_match_data = { 266 .component_drv = &g12a_toacodec_component_drv, 267 .field_dat_sel = REG_FIELD(TOACODEC_CTRL0, 14, 15), 268 .field_lrclk_sel = REG_FIELD(TOACODEC_CTRL0, 8, 9), 269 .field_bclk_sel = REG_FIELD(TOACODEC_CTRL0, 4, 5), 270 }; 271 272 static const struct g12a_toacodec_match_data sm1_toacodec_match_data = { 273 .component_drv = &sm1_toacodec_component_drv, 274 .field_dat_sel = REG_FIELD(TOACODEC_CTRL0, 18, 19), 275 .field_lrclk_sel = REG_FIELD(TOACODEC_CTRL0, 12, 14), 276 .field_bclk_sel = REG_FIELD(TOACODEC_CTRL0, 4, 6), 277 }; 278 279 static const struct of_device_id g12a_toacodec_of_match[] = { 280 { 281 .compatible = "amlogic,g12a-toacodec", 282 .data = &g12a_toacodec_match_data, 283 }, 284 { 285 .compatible = "amlogic,sm1-toacodec", 286 .data = &sm1_toacodec_match_data, 287 }, 288 {} 289 }; 290 MODULE_DEVICE_TABLE(of, g12a_toacodec_of_match); 291 292 static int g12a_toacodec_probe(struct platform_device *pdev) 293 { 294 const struct g12a_toacodec_match_data *data; 295 struct device *dev = &pdev->dev; 296 struct g12a_toacodec *priv; 297 void __iomem *regs; 298 struct regmap *map; 299 int ret; 300 301 data = device_get_match_data(dev); 302 if (!data) { 303 dev_err(dev, "failed to match device\n"); 304 return -ENODEV; 305 } 306 307 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 308 if (!priv) 309 return -ENOMEM; 310 311 platform_set_drvdata(pdev, priv); 312 313 ret = device_reset(dev); 314 if (ret) 315 return ret; 316 317 regs = devm_platform_ioremap_resource(pdev, 0); 318 if (IS_ERR(regs)) 319 return PTR_ERR(regs); 320 321 map = devm_regmap_init_mmio(dev, regs, &g12a_toacodec_regmap_cfg); 322 if (IS_ERR(map)) { 323 dev_err(dev, "failed to init regmap: %ld\n", 324 PTR_ERR(map)); 325 return PTR_ERR(map); 326 } 327 328 priv->field_dat_sel = devm_regmap_field_alloc(dev, map, data->field_dat_sel); 329 if (IS_ERR(priv->field_dat_sel)) 330 return PTR_ERR(priv->field_dat_sel); 331 332 priv->field_lrclk_sel = devm_regmap_field_alloc(dev, map, data->field_lrclk_sel); 333 if (IS_ERR(priv->field_lrclk_sel)) 334 return PTR_ERR(priv->field_lrclk_sel); 335 336 priv->field_bclk_sel = devm_regmap_field_alloc(dev, map, data->field_bclk_sel); 337 if (IS_ERR(priv->field_bclk_sel)) 338 return PTR_ERR(priv->field_bclk_sel); 339 340 return devm_snd_soc_register_component(dev, 341 data->component_drv, g12a_toacodec_dai_drv, 342 ARRAY_SIZE(g12a_toacodec_dai_drv)); 343 } 344 345 static struct platform_driver g12a_toacodec_pdrv = { 346 .driver = { 347 .name = G12A_TOACODEC_DRV_NAME, 348 .of_match_table = g12a_toacodec_of_match, 349 }, 350 .probe = g12a_toacodec_probe, 351 }; 352 module_platform_driver(g12a_toacodec_pdrv); 353 354 MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>"); 355 MODULE_DESCRIPTION("Amlogic G12a To Internal DAC Codec Driver"); 356 MODULE_LICENSE("GPL v2"); 357