1 // SPDX-License-Identifier: (GPL-2.0 OR MIT) 2 // 3 // Copyright (c) 2018 BayLibre, SAS. 4 // Author: Jerome Brunet <jbrunet@baylibre.com> 5 6 #include <linux/module.h> 7 #include <linux/of_platform.h> 8 #include <linux/regmap.h> 9 #include <sound/soc.h> 10 #include <sound/soc-dai.h> 11 12 #include "axg-tdm-formatter.h" 13 14 #define TDMOUT_CTRL0 0x00 15 #define TDMOUT_CTRL0_BITNUM_MASK GENMASK(4, 0) 16 #define TDMOUT_CTRL0_BITNUM(x) ((x) << 0) 17 #define TDMOUT_CTRL0_SLOTNUM_MASK GENMASK(9, 5) 18 #define TDMOUT_CTRL0_SLOTNUM(x) ((x) << 5) 19 #define TDMOUT_CTRL0_INIT_BITNUM_MASK GENMASK(19, 15) 20 #define TDMOUT_CTRL0_INIT_BITNUM(x) ((x) << 15) 21 #define TDMOUT_CTRL0_ENABLE BIT(31) 22 #define TDMOUT_CTRL0_RST_OUT BIT(29) 23 #define TDMOUT_CTRL0_RST_IN BIT(28) 24 #define TDMOUT_CTRL1 0x04 25 #define TDMOUT_CTRL1_TYPE_MASK GENMASK(6, 4) 26 #define TDMOUT_CTRL1_TYPE(x) ((x) << 4) 27 #define SM1_TDMOUT_CTRL1_GAIN_EN 7 28 #define TDMOUT_CTRL1_MSB_POS_MASK GENMASK(12, 8) 29 #define TDMOUT_CTRL1_MSB_POS(x) ((x) << 8) 30 #define TDMOUT_CTRL1_SEL_SHIFT 24 31 #define TDMOUT_CTRL1_GAIN_EN 26 32 #define TDMOUT_CTRL1_WS_INV BIT(28) 33 #define TDMOUT_SWAP 0x08 34 #define TDMOUT_MASK0 0x0c 35 #define TDMOUT_MASK1 0x10 36 #define TDMOUT_MASK2 0x14 37 #define TDMOUT_MASK3 0x18 38 #define TDMOUT_STAT 0x1c 39 #define TDMOUT_GAIN0 0x20 40 #define TDMOUT_GAIN1 0x24 41 #define TDMOUT_MUTE_VAL 0x28 42 #define TDMOUT_MUTE0 0x2c 43 #define TDMOUT_MUTE1 0x30 44 #define TDMOUT_MUTE2 0x34 45 #define TDMOUT_MUTE3 0x38 46 #define TDMOUT_MASK_VAL 0x3c 47 48 static const struct regmap_config axg_tdmout_regmap_cfg = { 49 .reg_bits = 32, 50 .val_bits = 32, 51 .reg_stride = 4, 52 .max_register = TDMOUT_MASK_VAL, 53 }; 54 55 static struct snd_soc_dai * 56 axg_tdmout_get_be(struct snd_soc_dapm_widget *w) 57 { 58 struct snd_soc_dapm_path *p = NULL; 59 struct snd_soc_dai *be; 60 61 snd_soc_dapm_widget_for_each_sink_path(w, p) { 62 if (!p->connect) 63 continue; 64 65 if (p->sink->id == snd_soc_dapm_dai_in) 66 return (struct snd_soc_dai *)p->sink->priv; 67 68 be = axg_tdmout_get_be(p->sink); 69 if (be) 70 return be; 71 } 72 73 return NULL; 74 } 75 76 static struct axg_tdm_stream * 77 axg_tdmout_get_tdm_stream(struct snd_soc_dapm_widget *w) 78 { 79 struct snd_soc_dai *be = axg_tdmout_get_be(w); 80 81 if (!be) 82 return NULL; 83 84 return be->playback_dma_data; 85 } 86 87 static void axg_tdmout_enable(struct regmap *map) 88 { 89 /* Apply both reset */ 90 regmap_update_bits(map, TDMOUT_CTRL0, 91 TDMOUT_CTRL0_RST_OUT | TDMOUT_CTRL0_RST_IN, 0); 92 93 /* Clear out reset before in reset */ 94 regmap_update_bits(map, TDMOUT_CTRL0, 95 TDMOUT_CTRL0_RST_OUT, TDMOUT_CTRL0_RST_OUT); 96 regmap_update_bits(map, TDMOUT_CTRL0, 97 TDMOUT_CTRL0_RST_IN, TDMOUT_CTRL0_RST_IN); 98 99 /* Actually enable tdmout */ 100 regmap_update_bits(map, TDMOUT_CTRL0, 101 TDMOUT_CTRL0_ENABLE, TDMOUT_CTRL0_ENABLE); 102 } 103 104 static void axg_tdmout_disable(struct regmap *map) 105 { 106 regmap_update_bits(map, TDMOUT_CTRL0, TDMOUT_CTRL0_ENABLE, 0); 107 } 108 109 static int axg_tdmout_prepare(struct regmap *map, 110 const struct axg_tdm_formatter_hw *quirks, 111 struct axg_tdm_stream *ts) 112 { 113 unsigned int val, skew = quirks->skew_offset; 114 115 /* Set the stream skew */ 116 switch (ts->iface->fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 117 case SND_SOC_DAIFMT_I2S: 118 case SND_SOC_DAIFMT_DSP_A: 119 break; 120 121 case SND_SOC_DAIFMT_LEFT_J: 122 case SND_SOC_DAIFMT_DSP_B: 123 skew += 1; 124 break; 125 126 default: 127 pr_err("Unsupported format: %u\n", 128 ts->iface->fmt & SND_SOC_DAIFMT_FORMAT_MASK); 129 return -EINVAL; 130 } 131 132 val = TDMOUT_CTRL0_INIT_BITNUM(skew); 133 134 /* Set the slot width */ 135 val |= TDMOUT_CTRL0_BITNUM(ts->iface->slot_width - 1); 136 137 /* Set the slot number */ 138 val |= TDMOUT_CTRL0_SLOTNUM(ts->iface->slots - 1); 139 140 regmap_update_bits(map, TDMOUT_CTRL0, 141 TDMOUT_CTRL0_INIT_BITNUM_MASK | 142 TDMOUT_CTRL0_BITNUM_MASK | 143 TDMOUT_CTRL0_SLOTNUM_MASK, val); 144 145 /* Set the sample width */ 146 val = TDMOUT_CTRL1_MSB_POS(ts->width - 1); 147 148 /* FIFO data are arranged in chunks of 64bits */ 149 switch (ts->physical_width) { 150 case 8: 151 /* 8 samples of 8 bits */ 152 val |= TDMOUT_CTRL1_TYPE(0); 153 break; 154 case 16: 155 /* 4 samples of 16 bits - right justified */ 156 val |= TDMOUT_CTRL1_TYPE(2); 157 break; 158 case 32: 159 /* 2 samples of 32 bits - right justified */ 160 val |= TDMOUT_CTRL1_TYPE(4); 161 break; 162 default: 163 pr_err("Unsupported physical width: %u\n", 164 ts->physical_width); 165 return -EINVAL; 166 } 167 168 /* If the sample clock is inverted, invert it back for the formatter */ 169 if (axg_tdm_lrclk_invert(ts->iface->fmt)) 170 val |= TDMOUT_CTRL1_WS_INV; 171 172 regmap_update_bits(map, TDMOUT_CTRL1, 173 (TDMOUT_CTRL1_TYPE_MASK | TDMOUT_CTRL1_MSB_POS_MASK | 174 TDMOUT_CTRL1_WS_INV), val); 175 176 /* Set static swap mask configuration */ 177 regmap_write(map, TDMOUT_SWAP, 0x76543210); 178 179 return axg_tdm_formatter_set_channel_masks(map, ts, TDMOUT_MASK0); 180 } 181 182 static const struct snd_kcontrol_new axg_tdmout_controls[] = { 183 SOC_DOUBLE("Lane 0 Volume", TDMOUT_GAIN0, 0, 8, 255, 0), 184 SOC_DOUBLE("Lane 1 Volume", TDMOUT_GAIN0, 16, 24, 255, 0), 185 SOC_DOUBLE("Lane 2 Volume", TDMOUT_GAIN1, 0, 8, 255, 0), 186 SOC_DOUBLE("Lane 3 Volume", TDMOUT_GAIN1, 16, 24, 255, 0), 187 SOC_SINGLE("Gain Enable Switch", TDMOUT_CTRL1, 188 TDMOUT_CTRL1_GAIN_EN, 1, 0), 189 }; 190 191 static const char * const axg_tdmout_sel_texts[] = { 192 "IN 0", "IN 1", "IN 2", 193 }; 194 195 static SOC_ENUM_SINGLE_DECL(axg_tdmout_sel_enum, TDMOUT_CTRL1, 196 TDMOUT_CTRL1_SEL_SHIFT, axg_tdmout_sel_texts); 197 198 static const struct snd_kcontrol_new axg_tdmout_in_mux = 199 SOC_DAPM_ENUM("Input Source", axg_tdmout_sel_enum); 200 201 static const struct snd_soc_dapm_widget axg_tdmout_dapm_widgets[] = { 202 SND_SOC_DAPM_AIF_IN("IN 0", NULL, 0, SND_SOC_NOPM, 0, 0), 203 SND_SOC_DAPM_AIF_IN("IN 1", NULL, 0, SND_SOC_NOPM, 0, 0), 204 SND_SOC_DAPM_AIF_IN("IN 2", NULL, 0, SND_SOC_NOPM, 0, 0), 205 SND_SOC_DAPM_MUX("SRC SEL", SND_SOC_NOPM, 0, 0, &axg_tdmout_in_mux), 206 SND_SOC_DAPM_PGA_E("ENC", SND_SOC_NOPM, 0, 0, NULL, 0, 207 axg_tdm_formatter_event, 208 (SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD)), 209 SND_SOC_DAPM_AIF_OUT("OUT", NULL, 0, SND_SOC_NOPM, 0, 0), 210 }; 211 212 static const struct snd_soc_dapm_route axg_tdmout_dapm_routes[] = { 213 { "SRC SEL", "IN 0", "IN 0" }, 214 { "SRC SEL", "IN 1", "IN 1" }, 215 { "SRC SEL", "IN 2", "IN 2" }, 216 { "ENC", NULL, "SRC SEL" }, 217 { "OUT", NULL, "ENC" }, 218 }; 219 220 static const struct snd_soc_component_driver axg_tdmout_component_drv = { 221 .controls = axg_tdmout_controls, 222 .num_controls = ARRAY_SIZE(axg_tdmout_controls), 223 .dapm_widgets = axg_tdmout_dapm_widgets, 224 .num_dapm_widgets = ARRAY_SIZE(axg_tdmout_dapm_widgets), 225 .dapm_routes = axg_tdmout_dapm_routes, 226 .num_dapm_routes = ARRAY_SIZE(axg_tdmout_dapm_routes), 227 }; 228 229 static const struct axg_tdm_formatter_ops axg_tdmout_ops = { 230 .get_stream = axg_tdmout_get_tdm_stream, 231 .prepare = axg_tdmout_prepare, 232 .enable = axg_tdmout_enable, 233 .disable = axg_tdmout_disable, 234 }; 235 236 static const struct axg_tdm_formatter_driver axg_tdmout_drv = { 237 .component_drv = &axg_tdmout_component_drv, 238 .regmap_cfg = &axg_tdmout_regmap_cfg, 239 .ops = &axg_tdmout_ops, 240 .quirks = &(const struct axg_tdm_formatter_hw) { 241 .skew_offset = 1, 242 }, 243 }; 244 245 static const struct axg_tdm_formatter_driver g12a_tdmout_drv = { 246 .component_drv = &axg_tdmout_component_drv, 247 .regmap_cfg = &axg_tdmout_regmap_cfg, 248 .ops = &axg_tdmout_ops, 249 .quirks = &(const struct axg_tdm_formatter_hw) { 250 .skew_offset = 2, 251 }, 252 }; 253 254 static const struct snd_kcontrol_new sm1_tdmout_controls[] = { 255 SOC_DOUBLE("Lane 0 Volume", TDMOUT_GAIN0, 0, 8, 255, 0), 256 SOC_DOUBLE("Lane 1 Volume", TDMOUT_GAIN0, 16, 24, 255, 0), 257 SOC_DOUBLE("Lane 2 Volume", TDMOUT_GAIN1, 0, 8, 255, 0), 258 SOC_DOUBLE("Lane 3 Volume", TDMOUT_GAIN1, 16, 24, 255, 0), 259 SOC_SINGLE("Gain Enable Switch", TDMOUT_CTRL1, 260 SM1_TDMOUT_CTRL1_GAIN_EN, 1, 0), 261 }; 262 263 static const char * const sm1_tdmout_sel_texts[] = { 264 "IN 0", "IN 1", "IN 2", "IN 3", "IN 4", 265 }; 266 267 static SOC_ENUM_SINGLE_DECL(sm1_tdmout_sel_enum, TDMOUT_CTRL1, 268 TDMOUT_CTRL1_SEL_SHIFT, sm1_tdmout_sel_texts); 269 270 static const struct snd_kcontrol_new sm1_tdmout_in_mux = 271 SOC_DAPM_ENUM("Input Source", sm1_tdmout_sel_enum); 272 273 static const struct snd_soc_dapm_widget sm1_tdmout_dapm_widgets[] = { 274 SND_SOC_DAPM_AIF_IN("IN 0", NULL, 0, SND_SOC_NOPM, 0, 0), 275 SND_SOC_DAPM_AIF_IN("IN 1", NULL, 0, SND_SOC_NOPM, 0, 0), 276 SND_SOC_DAPM_AIF_IN("IN 2", NULL, 0, SND_SOC_NOPM, 0, 0), 277 SND_SOC_DAPM_AIF_IN("IN 3", NULL, 0, SND_SOC_NOPM, 0, 0), 278 SND_SOC_DAPM_AIF_IN("IN 4", NULL, 0, SND_SOC_NOPM, 0, 0), 279 SND_SOC_DAPM_MUX("SRC SEL", SND_SOC_NOPM, 0, 0, &sm1_tdmout_in_mux), 280 SND_SOC_DAPM_PGA_E("ENC", SND_SOC_NOPM, 0, 0, NULL, 0, 281 axg_tdm_formatter_event, 282 (SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD)), 283 SND_SOC_DAPM_AIF_OUT("OUT", NULL, 0, SND_SOC_NOPM, 0, 0), 284 }; 285 286 static const struct snd_soc_dapm_route sm1_tdmout_dapm_routes[] = { 287 { "SRC SEL", "IN 0", "IN 0" }, 288 { "SRC SEL", "IN 1", "IN 1" }, 289 { "SRC SEL", "IN 2", "IN 2" }, 290 { "SRC SEL", "IN 3", "IN 3" }, 291 { "SRC SEL", "IN 4", "IN 4" }, 292 { "ENC", NULL, "SRC SEL" }, 293 { "OUT", NULL, "ENC" }, 294 }; 295 296 static const struct snd_soc_component_driver sm1_tdmout_component_drv = { 297 .controls = sm1_tdmout_controls, 298 .num_controls = ARRAY_SIZE(sm1_tdmout_controls), 299 .dapm_widgets = sm1_tdmout_dapm_widgets, 300 .num_dapm_widgets = ARRAY_SIZE(sm1_tdmout_dapm_widgets), 301 .dapm_routes = sm1_tdmout_dapm_routes, 302 .num_dapm_routes = ARRAY_SIZE(sm1_tdmout_dapm_routes), 303 }; 304 305 static const struct axg_tdm_formatter_driver sm1_tdmout_drv = { 306 .component_drv = &sm1_tdmout_component_drv, 307 .regmap_cfg = &axg_tdmout_regmap_cfg, 308 .ops = &axg_tdmout_ops, 309 .quirks = &(const struct axg_tdm_formatter_hw) { 310 .skew_offset = 2, 311 }, 312 }; 313 314 static const struct of_device_id axg_tdmout_of_match[] = { 315 { 316 .compatible = "amlogic,axg-tdmout", 317 .data = &axg_tdmout_drv, 318 }, { 319 .compatible = "amlogic,g12a-tdmout", 320 .data = &g12a_tdmout_drv, 321 }, { 322 .compatible = "amlogic,sm1-tdmout", 323 .data = &sm1_tdmout_drv, 324 }, {} 325 }; 326 MODULE_DEVICE_TABLE(of, axg_tdmout_of_match); 327 328 static struct platform_driver axg_tdmout_pdrv = { 329 .probe = axg_tdm_formatter_probe, 330 .driver = { 331 .name = "axg-tdmout", 332 .of_match_table = axg_tdmout_of_match, 333 }, 334 }; 335 module_platform_driver(axg_tdmout_pdrv); 336 337 MODULE_DESCRIPTION("Amlogic AXG TDM output formatter driver"); 338 MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>"); 339 MODULE_LICENSE("GPL v2"); 340