g12a-toacodec.c (10830B)
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 46struct 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 52struct 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 59static const char * const g12a_toacodec_mux_texts[] = { 60 "I2S A", "I2S B", "I2S C", 61}; 62 63static int g12a_toacodec_mux_put_enum(struct snd_kcontrol *kcontrol, 64 struct snd_ctl_elem_value *ucontrol) 65{ 66 struct snd_soc_component *component = 67 snd_soc_dapm_kcontrol_component(kcontrol); 68 struct g12a_toacodec *priv = snd_soc_component_get_drvdata(component); 69 struct snd_soc_dapm_context *dapm = 70 snd_soc_dapm_kcontrol_dapm(kcontrol); 71 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; 72 unsigned int mux, reg; 73 74 mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]); 75 regmap_field_read(priv->field_dat_sel, ®); 76 77 if (mux == reg) 78 return 0; 79 80 /* Force disconnect of the mux while updating */ 81 snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL); 82 83 regmap_field_write(priv->field_dat_sel, mux); 84 regmap_field_write(priv->field_lrclk_sel, mux); 85 regmap_field_write(priv->field_bclk_sel, mux); 86 87 /* 88 * FIXME: 89 * On this soc, the glue gets the MCLK directly from the clock 90 * controller instead of going the through the TDM interface. 91 * 92 * Here we assume interface A uses clock A, etc ... While it is 93 * true for now, it could be different. Instead the glue should 94 * find out the clock used by the interface and select the same 95 * source. For that, we will need regmap backed clock mux which 96 * is a work in progress 97 */ 98 snd_soc_component_update_bits(component, e->reg, 99 CTRL0_MCLK_SEL, 100 FIELD_PREP(CTRL0_MCLK_SEL, mux)); 101 102 snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL); 103 104 return 0; 105} 106 107static SOC_ENUM_SINGLE_DECL(g12a_toacodec_mux_enum, TOACODEC_CTRL0, 108 CTRL0_DAT_SEL_LSB, 109 g12a_toacodec_mux_texts); 110 111static SOC_ENUM_SINGLE_DECL(sm1_toacodec_mux_enum, TOACODEC_CTRL0, 112 CTRL0_DAT_SEL_SM1_LSB, 113 g12a_toacodec_mux_texts); 114 115static const struct snd_kcontrol_new g12a_toacodec_mux = 116 SOC_DAPM_ENUM_EXT("Source", g12a_toacodec_mux_enum, 117 snd_soc_dapm_get_enum_double, 118 g12a_toacodec_mux_put_enum); 119 120static const struct snd_kcontrol_new sm1_toacodec_mux = 121 SOC_DAPM_ENUM_EXT("Source", sm1_toacodec_mux_enum, 122 snd_soc_dapm_get_enum_double, 123 g12a_toacodec_mux_put_enum); 124 125static const struct snd_kcontrol_new g12a_toacodec_out_enable = 126 SOC_DAPM_SINGLE_AUTODISABLE("Switch", TOACODEC_CTRL0, 127 CTRL0_ENABLE_SHIFT, 1, 0); 128 129static const struct snd_soc_dapm_widget g12a_toacodec_widgets[] = { 130 SND_SOC_DAPM_MUX("SRC", SND_SOC_NOPM, 0, 0, 131 &g12a_toacodec_mux), 132 SND_SOC_DAPM_SWITCH("OUT EN", SND_SOC_NOPM, 0, 0, 133 &g12a_toacodec_out_enable), 134}; 135 136static const struct snd_soc_dapm_widget sm1_toacodec_widgets[] = { 137 SND_SOC_DAPM_MUX("SRC", SND_SOC_NOPM, 0, 0, 138 &sm1_toacodec_mux), 139 SND_SOC_DAPM_SWITCH("OUT EN", SND_SOC_NOPM, 0, 0, 140 &g12a_toacodec_out_enable), 141}; 142 143static int g12a_toacodec_input_hw_params(struct snd_pcm_substream *substream, 144 struct snd_pcm_hw_params *params, 145 struct snd_soc_dai *dai) 146{ 147 struct meson_codec_glue_input *data; 148 int ret; 149 150 ret = meson_codec_glue_input_hw_params(substream, params, dai); 151 if (ret) 152 return ret; 153 154 /* The glue will provide 1 lane out of the 4 to the output */ 155 data = meson_codec_glue_input_get_data(dai); 156 data->params.channels_min = min_t(unsigned int, TOACODEC_OUT_CHMAX, 157 data->params.channels_min); 158 data->params.channels_max = min_t(unsigned int, TOACODEC_OUT_CHMAX, 159 data->params.channels_max); 160 161 return 0; 162} 163 164static const struct snd_soc_dai_ops g12a_toacodec_input_ops = { 165 .hw_params = g12a_toacodec_input_hw_params, 166 .set_fmt = meson_codec_glue_input_set_fmt, 167}; 168 169static const struct snd_soc_dai_ops g12a_toacodec_output_ops = { 170 .startup = meson_codec_glue_output_startup, 171}; 172 173#define TOACODEC_STREAM(xname, xsuffix, xchmax) \ 174{ \ 175 .stream_name = xname " " xsuffix, \ 176 .channels_min = 1, \ 177 .channels_max = (xchmax), \ 178 .rate_min = 5512, \ 179 .rate_max = 192000, \ 180 .formats = AXG_TDM_FORMATS, \ 181} 182 183#define TOACODEC_INPUT(xname, xid) { \ 184 .name = xname, \ 185 .id = (xid), \ 186 .playback = TOACODEC_STREAM(xname, "Playback", 8), \ 187 .ops = &g12a_toacodec_input_ops, \ 188 .probe = meson_codec_glue_input_dai_probe, \ 189 .remove = meson_codec_glue_input_dai_remove, \ 190} 191 192#define TOACODEC_OUTPUT(xname, xid) { \ 193 .name = xname, \ 194 .id = (xid), \ 195 .capture = TOACODEC_STREAM(xname, "Capture", TOACODEC_OUT_CHMAX), \ 196 .ops = &g12a_toacodec_output_ops, \ 197} 198 199static struct snd_soc_dai_driver g12a_toacodec_dai_drv[] = { 200 TOACODEC_INPUT("IN A", TOACODEC_IN_A), 201 TOACODEC_INPUT("IN B", TOACODEC_IN_B), 202 TOACODEC_INPUT("IN C", TOACODEC_IN_C), 203 TOACODEC_OUTPUT("OUT", TOACODEC_OUT), 204}; 205 206static int g12a_toacodec_component_probe(struct snd_soc_component *c) 207{ 208 /* Initialize the static clock parameters */ 209 return snd_soc_component_write(c, TOACODEC_CTRL0, 210 CTRL0_BLK_CAP_INV); 211} 212 213static int sm1_toacodec_component_probe(struct snd_soc_component *c) 214{ 215 /* Initialize the static clock parameters */ 216 return snd_soc_component_write(c, TOACODEC_CTRL0, 217 CTRL0_BLK_CAP_INV_SM1); 218} 219 220static const struct snd_soc_dapm_route g12a_toacodec_routes[] = { 221 { "SRC", "I2S A", "IN A Playback" }, 222 { "SRC", "I2S B", "IN B Playback" }, 223 { "SRC", "I2S C", "IN C Playback" }, 224 { "OUT EN", "Switch", "SRC" }, 225 { "OUT Capture", NULL, "OUT EN" }, 226}; 227 228static const struct snd_kcontrol_new g12a_toacodec_controls[] = { 229 SOC_SINGLE("Lane Select", TOACODEC_CTRL0, CTRL0_LANE_SEL, 3, 0), 230}; 231 232static const struct snd_kcontrol_new sm1_toacodec_controls[] = { 233 SOC_SINGLE("Lane Select", TOACODEC_CTRL0, CTRL0_LANE_SEL_SM1, 3, 0), 234}; 235 236static const struct snd_soc_component_driver g12a_toacodec_component_drv = { 237 .probe = g12a_toacodec_component_probe, 238 .controls = g12a_toacodec_controls, 239 .num_controls = ARRAY_SIZE(g12a_toacodec_controls), 240 .dapm_widgets = g12a_toacodec_widgets, 241 .num_dapm_widgets = ARRAY_SIZE(g12a_toacodec_widgets), 242 .dapm_routes = g12a_toacodec_routes, 243 .num_dapm_routes = ARRAY_SIZE(g12a_toacodec_routes), 244 .endianness = 1, 245 .non_legacy_dai_naming = 1, 246}; 247 248static 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 .non_legacy_dai_naming = 1, 258}; 259 260static const struct regmap_config g12a_toacodec_regmap_cfg = { 261 .reg_bits = 32, 262 .val_bits = 32, 263 .reg_stride = 4, 264}; 265 266static const struct g12a_toacodec_match_data g12a_toacodec_match_data = { 267 .component_drv = &g12a_toacodec_component_drv, 268 .field_dat_sel = REG_FIELD(TOACODEC_CTRL0, 14, 15), 269 .field_lrclk_sel = REG_FIELD(TOACODEC_CTRL0, 8, 9), 270 .field_bclk_sel = REG_FIELD(TOACODEC_CTRL0, 4, 5), 271}; 272 273static const struct g12a_toacodec_match_data sm1_toacodec_match_data = { 274 .component_drv = &sm1_toacodec_component_drv, 275 .field_dat_sel = REG_FIELD(TOACODEC_CTRL0, 18, 19), 276 .field_lrclk_sel = REG_FIELD(TOACODEC_CTRL0, 12, 14), 277 .field_bclk_sel = REG_FIELD(TOACODEC_CTRL0, 4, 6), 278}; 279 280static const struct of_device_id g12a_toacodec_of_match[] = { 281 { 282 .compatible = "amlogic,g12a-toacodec", 283 .data = &g12a_toacodec_match_data, 284 }, 285 { 286 .compatible = "amlogic,sm1-toacodec", 287 .data = &sm1_toacodec_match_data, 288 }, 289 {} 290}; 291MODULE_DEVICE_TABLE(of, g12a_toacodec_of_match); 292 293static int g12a_toacodec_probe(struct platform_device *pdev) 294{ 295 const struct g12a_toacodec_match_data *data; 296 struct device *dev = &pdev->dev; 297 struct g12a_toacodec *priv; 298 void __iomem *regs; 299 struct regmap *map; 300 int ret; 301 302 data = device_get_match_data(dev); 303 if (!data) { 304 dev_err(dev, "failed to match device\n"); 305 return -ENODEV; 306 } 307 308 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 309 if (!priv) 310 return -ENOMEM; 311 312 platform_set_drvdata(pdev, priv); 313 314 ret = device_reset(dev); 315 if (ret) 316 return ret; 317 318 regs = devm_platform_ioremap_resource(pdev, 0); 319 if (IS_ERR(regs)) 320 return PTR_ERR(regs); 321 322 map = devm_regmap_init_mmio(dev, regs, &g12a_toacodec_regmap_cfg); 323 if (IS_ERR(map)) { 324 dev_err(dev, "failed to init regmap: %ld\n", 325 PTR_ERR(map)); 326 return PTR_ERR(map); 327 } 328 329 priv->field_dat_sel = devm_regmap_field_alloc(dev, map, data->field_dat_sel); 330 if (IS_ERR(priv->field_dat_sel)) 331 return PTR_ERR(priv->field_dat_sel); 332 333 priv->field_lrclk_sel = devm_regmap_field_alloc(dev, map, data->field_lrclk_sel); 334 if (IS_ERR(priv->field_lrclk_sel)) 335 return PTR_ERR(priv->field_lrclk_sel); 336 337 priv->field_bclk_sel = devm_regmap_field_alloc(dev, map, data->field_bclk_sel); 338 if (IS_ERR(priv->field_bclk_sel)) 339 return PTR_ERR(priv->field_bclk_sel); 340 341 return devm_snd_soc_register_component(dev, 342 data->component_drv, g12a_toacodec_dai_drv, 343 ARRAY_SIZE(g12a_toacodec_dai_drv)); 344} 345 346static struct platform_driver g12a_toacodec_pdrv = { 347 .driver = { 348 .name = G12A_TOACODEC_DRV_NAME, 349 .of_match_table = g12a_toacodec_of_match, 350 }, 351 .probe = g12a_toacodec_probe, 352}; 353module_platform_driver(g12a_toacodec_pdrv); 354 355MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>"); 356MODULE_DESCRIPTION("Amlogic G12a To Internal DAC Codec Driver"); 357MODULE_LICENSE("GPL v2");