1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * tas2552.c - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier 4 * 5 * Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com 6 * 7 * Author: Dan Murphy <dmurphy@ti.com> 8 */ 9 10 #include <linux/module.h> 11 #include <linux/errno.h> 12 #include <linux/device.h> 13 #include <linux/i2c.h> 14 #include <linux/gpio.h> 15 #include <linux/of_gpio.h> 16 #include <linux/pm_runtime.h> 17 #include <linux/regmap.h> 18 #include <linux/slab.h> 19 20 #include <linux/gpio/consumer.h> 21 #include <linux/regulator/consumer.h> 22 23 #include <sound/pcm.h> 24 #include <sound/pcm_params.h> 25 #include <sound/soc.h> 26 #include <sound/soc-dapm.h> 27 #include <sound/tlv.h> 28 #include <sound/tas2552-plat.h> 29 #include <dt-bindings/sound/tas2552.h> 30 31 #include "tas2552.h" 32 33 static const struct reg_default tas2552_reg_defs[] = { 34 {TAS2552_CFG_1, 0x22}, 35 {TAS2552_CFG_3, 0x80}, 36 {TAS2552_DOUT, 0x00}, 37 {TAS2552_OUTPUT_DATA, 0xc0}, 38 {TAS2552_PDM_CFG, 0x01}, 39 {TAS2552_PGA_GAIN, 0x00}, 40 {TAS2552_BOOST_APT_CTRL, 0x0f}, 41 {TAS2552_RESERVED_0D, 0xbe}, 42 {TAS2552_LIMIT_RATE_HYS, 0x08}, 43 {TAS2552_CFG_2, 0xef}, 44 {TAS2552_SER_CTRL_1, 0x00}, 45 {TAS2552_SER_CTRL_2, 0x00}, 46 {TAS2552_PLL_CTRL_1, 0x10}, 47 {TAS2552_PLL_CTRL_2, 0x00}, 48 {TAS2552_PLL_CTRL_3, 0x00}, 49 {TAS2552_BTIP, 0x8f}, 50 {TAS2552_BTS_CTRL, 0x80}, 51 {TAS2552_LIMIT_RELEASE, 0x04}, 52 {TAS2552_LIMIT_INT_COUNT, 0x00}, 53 {TAS2552_EDGE_RATE_CTRL, 0x40}, 54 {TAS2552_VBAT_DATA, 0x00}, 55 }; 56 57 #define TAS2552_NUM_SUPPLIES 3 58 static const char *tas2552_supply_names[TAS2552_NUM_SUPPLIES] = { 59 "vbat", /* vbat voltage */ 60 "iovdd", /* I/O Voltage */ 61 "avdd", /* Analog DAC Voltage */ 62 }; 63 64 struct tas2552_data { 65 struct snd_soc_component *component; 66 struct regmap *regmap; 67 struct i2c_client *tas2552_client; 68 struct regulator_bulk_data supplies[TAS2552_NUM_SUPPLIES]; 69 struct gpio_desc *enable_gpio; 70 unsigned char regs[TAS2552_VBAT_DATA]; 71 unsigned int pll_clkin; 72 int pll_clk_id; 73 unsigned int pdm_clk; 74 int pdm_clk_id; 75 76 unsigned int dai_fmt; 77 unsigned int tdm_delay; 78 }; 79 80 static int tas2552_post_event(struct snd_soc_dapm_widget *w, 81 struct snd_kcontrol *kcontrol, int event) 82 { 83 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); 84 85 switch (event) { 86 case SND_SOC_DAPM_POST_PMU: 87 snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xc0); 88 snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5), 89 (1 << 5)); 90 snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 0); 91 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS, 0); 92 break; 93 case SND_SOC_DAPM_POST_PMD: 94 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS, 95 TAS2552_SWS); 96 snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 1); 97 snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5), 0); 98 snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xbe); 99 break; 100 } 101 return 0; 102 } 103 104 /* Input mux controls */ 105 static const char * const tas2552_input_texts[] = { 106 "Digital", "Analog" }; 107 static SOC_ENUM_SINGLE_DECL(tas2552_input_mux_enum, TAS2552_CFG_3, 7, 108 tas2552_input_texts); 109 110 static const struct snd_kcontrol_new tas2552_input_mux_control = 111 SOC_DAPM_ENUM("Route", tas2552_input_mux_enum); 112 113 static const struct snd_soc_dapm_widget tas2552_dapm_widgets[] = 114 { 115 SND_SOC_DAPM_INPUT("IN"), 116 117 /* MUX Controls */ 118 SND_SOC_DAPM_MUX("Input selection", SND_SOC_NOPM, 0, 0, 119 &tas2552_input_mux_control), 120 121 SND_SOC_DAPM_AIF_IN("DAC IN", "DAC Playback", 0, SND_SOC_NOPM, 0, 0), 122 SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0), 123 SND_SOC_DAPM_OUT_DRV("ClassD", TAS2552_CFG_2, 7, 0, NULL, 0), 124 SND_SOC_DAPM_SUPPLY("PLL", TAS2552_CFG_2, 3, 0, NULL, 0), 125 SND_SOC_DAPM_POST("Post Event", tas2552_post_event), 126 127 SND_SOC_DAPM_OUTPUT("OUT") 128 }; 129 130 static const struct snd_soc_dapm_route tas2552_audio_map[] = { 131 {"DAC", NULL, "DAC IN"}, 132 {"Input selection", "Digital", "DAC"}, 133 {"Input selection", "Analog", "IN"}, 134 {"ClassD", NULL, "Input selection"}, 135 {"OUT", NULL, "ClassD"}, 136 {"ClassD", NULL, "PLL"}, 137 }; 138 139 #ifdef CONFIG_PM 140 static void tas2552_sw_shutdown(struct tas2552_data *tas2552, int sw_shutdown) 141 { 142 u8 cfg1_reg = 0; 143 144 if (!tas2552->component) 145 return; 146 147 if (sw_shutdown) 148 cfg1_reg = TAS2552_SWS; 149 150 snd_soc_component_update_bits(tas2552->component, TAS2552_CFG_1, TAS2552_SWS, 151 cfg1_reg); 152 } 153 #endif 154 155 static int tas2552_setup_pll(struct snd_soc_component *component, 156 struct snd_pcm_hw_params *params) 157 { 158 struct tas2552_data *tas2552 = dev_get_drvdata(component->dev); 159 bool bypass_pll = false; 160 unsigned int pll_clk = params_rate(params) * 512; 161 unsigned int pll_clkin = tas2552->pll_clkin; 162 u8 pll_enable; 163 164 if (!pll_clkin) { 165 if (tas2552->pll_clk_id != TAS2552_PLL_CLKIN_BCLK) 166 return -EINVAL; 167 168 pll_clkin = snd_soc_params_to_bclk(params); 169 pll_clkin += tas2552->tdm_delay; 170 } 171 172 pll_enable = snd_soc_component_read(component, TAS2552_CFG_2) & TAS2552_PLL_ENABLE; 173 snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0); 174 175 if (pll_clkin == pll_clk) 176 bypass_pll = true; 177 178 if (bypass_pll) { 179 /* By pass the PLL configuration */ 180 snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_2, 181 TAS2552_PLL_BYPASS, TAS2552_PLL_BYPASS); 182 } else { 183 /* Fill in the PLL control registers for J & D 184 * pll_clk = (.5 * pll_clkin * J.D) / 2^p 185 * Need to fill in J and D here based on incoming freq 186 */ 187 unsigned int d, q, t; 188 u8 j; 189 u8 pll_sel = (tas2552->pll_clk_id << 3) & TAS2552_PLL_SRC_MASK; 190 u8 p = snd_soc_component_read(component, TAS2552_PLL_CTRL_1); 191 192 p = (p >> 7); 193 194 recalc: 195 t = (pll_clk * 2) << p; 196 j = t / pll_clkin; 197 d = t % pll_clkin; 198 t = pll_clkin / 10000; 199 q = d / (t + 1); 200 d = q + ((9999 - pll_clkin % 10000) * (d / t - q)) / 10000; 201 202 if (d && (pll_clkin < 512000 || pll_clkin > 9200000)) { 203 if (tas2552->pll_clk_id == TAS2552_PLL_CLKIN_BCLK) { 204 pll_clkin = 1800000; 205 pll_sel = (TAS2552_PLL_CLKIN_1_8_FIXED << 3) & 206 TAS2552_PLL_SRC_MASK; 207 } else { 208 pll_clkin = snd_soc_params_to_bclk(params); 209 pll_clkin += tas2552->tdm_delay; 210 pll_sel = (TAS2552_PLL_CLKIN_BCLK << 3) & 211 TAS2552_PLL_SRC_MASK; 212 } 213 goto recalc; 214 } 215 216 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_PLL_SRC_MASK, 217 pll_sel); 218 219 snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_1, 220 TAS2552_PLL_J_MASK, j); 221 /* Will clear the PLL_BYPASS bit */ 222 snd_soc_component_write(component, TAS2552_PLL_CTRL_2, 223 TAS2552_PLL_D_UPPER(d)); 224 snd_soc_component_write(component, TAS2552_PLL_CTRL_3, 225 TAS2552_PLL_D_LOWER(d)); 226 } 227 228 /* Restore PLL status */ 229 snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 230 pll_enable); 231 232 return 0; 233 } 234 235 static int tas2552_hw_params(struct snd_pcm_substream *substream, 236 struct snd_pcm_hw_params *params, 237 struct snd_soc_dai *dai) 238 { 239 struct snd_soc_component *component = dai->component; 240 struct tas2552_data *tas2552 = dev_get_drvdata(component->dev); 241 int cpf; 242 u8 ser_ctrl1_reg, wclk_rate; 243 244 switch (params_width(params)) { 245 case 16: 246 ser_ctrl1_reg = TAS2552_WORDLENGTH_16BIT; 247 cpf = 32 + tas2552->tdm_delay; 248 break; 249 case 20: 250 ser_ctrl1_reg = TAS2552_WORDLENGTH_20BIT; 251 cpf = 64 + tas2552->tdm_delay; 252 break; 253 case 24: 254 ser_ctrl1_reg = TAS2552_WORDLENGTH_24BIT; 255 cpf = 64 + tas2552->tdm_delay; 256 break; 257 case 32: 258 ser_ctrl1_reg = TAS2552_WORDLENGTH_32BIT; 259 cpf = 64 + tas2552->tdm_delay; 260 break; 261 default: 262 dev_err(component->dev, "Not supported sample size: %d\n", 263 params_width(params)); 264 return -EINVAL; 265 } 266 267 if (cpf <= 32) 268 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_32; 269 else if (cpf <= 64) 270 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_64; 271 else if (cpf <= 128) 272 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_128; 273 else 274 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_256; 275 276 snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1, 277 TAS2552_WORDLENGTH_MASK | TAS2552_CLKSPERFRAME_MASK, 278 ser_ctrl1_reg); 279 280 switch (params_rate(params)) { 281 case 8000: 282 wclk_rate = TAS2552_WCLK_FREQ_8KHZ; 283 break; 284 case 11025: 285 case 12000: 286 wclk_rate = TAS2552_WCLK_FREQ_11_12KHZ; 287 break; 288 case 16000: 289 wclk_rate = TAS2552_WCLK_FREQ_16KHZ; 290 break; 291 case 22050: 292 case 24000: 293 wclk_rate = TAS2552_WCLK_FREQ_22_24KHZ; 294 break; 295 case 32000: 296 wclk_rate = TAS2552_WCLK_FREQ_32KHZ; 297 break; 298 case 44100: 299 case 48000: 300 wclk_rate = TAS2552_WCLK_FREQ_44_48KHZ; 301 break; 302 case 88200: 303 case 96000: 304 wclk_rate = TAS2552_WCLK_FREQ_88_96KHZ; 305 break; 306 case 176400: 307 case 192000: 308 wclk_rate = TAS2552_WCLK_FREQ_176_192KHZ; 309 break; 310 default: 311 dev_err(component->dev, "Not supported sample rate: %d\n", 312 params_rate(params)); 313 return -EINVAL; 314 } 315 316 snd_soc_component_update_bits(component, TAS2552_CFG_3, TAS2552_WCLK_FREQ_MASK, 317 wclk_rate); 318 319 return tas2552_setup_pll(component, params); 320 } 321 322 #define TAS2552_DAI_FMT_MASK (TAS2552_BCLKDIR | \ 323 TAS2552_WCLKDIR | \ 324 TAS2552_DATAFORMAT_MASK) 325 static int tas2552_prepare(struct snd_pcm_substream *substream, 326 struct snd_soc_dai *dai) 327 { 328 struct snd_soc_component *component = dai->component; 329 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); 330 int delay = 0; 331 332 /* TDM slot selection only valid in DSP_A/_B mode */ 333 if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_A) 334 delay += (tas2552->tdm_delay + 1); 335 else if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_B) 336 delay += tas2552->tdm_delay; 337 338 /* Configure data delay */ 339 snd_soc_component_write(component, TAS2552_SER_CTRL_2, delay); 340 341 return 0; 342 } 343 344 static int tas2552_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) 345 { 346 struct snd_soc_component *component = dai->component; 347 struct tas2552_data *tas2552 = dev_get_drvdata(component->dev); 348 u8 serial_format; 349 350 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { 351 case SND_SOC_DAIFMT_CBC_CFC: 352 serial_format = 0x00; 353 break; 354 case SND_SOC_DAIFMT_CBC_CFP: 355 serial_format = TAS2552_WCLKDIR; 356 break; 357 case SND_SOC_DAIFMT_CBP_CFC: 358 serial_format = TAS2552_BCLKDIR; 359 break; 360 case SND_SOC_DAIFMT_CBP_CFP: 361 serial_format = (TAS2552_BCLKDIR | TAS2552_WCLKDIR); 362 break; 363 default: 364 dev_vdbg(component->dev, "DAI Format master is not found\n"); 365 return -EINVAL; 366 } 367 368 switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK | 369 SND_SOC_DAIFMT_INV_MASK)) { 370 case (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF): 371 break; 372 case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF): 373 case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF): 374 serial_format |= TAS2552_DATAFORMAT_DSP; 375 break; 376 case (SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_NB_NF): 377 serial_format |= TAS2552_DATAFORMAT_RIGHT_J; 378 break; 379 case (SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF): 380 serial_format |= TAS2552_DATAFORMAT_LEFT_J; 381 break; 382 default: 383 dev_vdbg(component->dev, "DAI Format is not found\n"); 384 return -EINVAL; 385 } 386 tas2552->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK; 387 388 snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1, TAS2552_DAI_FMT_MASK, 389 serial_format); 390 return 0; 391 } 392 393 static int tas2552_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, 394 unsigned int freq, int dir) 395 { 396 struct snd_soc_component *component = dai->component; 397 struct tas2552_data *tas2552 = dev_get_drvdata(component->dev); 398 u8 reg, mask, val; 399 400 switch (clk_id) { 401 case TAS2552_PLL_CLKIN_MCLK: 402 case TAS2552_PLL_CLKIN_IVCLKIN: 403 if (freq < 512000 || freq > 24576000) { 404 /* out of range PLL_CLKIN, fall back to use BCLK */ 405 dev_warn(component->dev, "Out of range PLL_CLKIN: %u\n", 406 freq); 407 clk_id = TAS2552_PLL_CLKIN_BCLK; 408 freq = 0; 409 } 410 fallthrough; 411 case TAS2552_PLL_CLKIN_BCLK: 412 case TAS2552_PLL_CLKIN_1_8_FIXED: 413 mask = TAS2552_PLL_SRC_MASK; 414 val = (clk_id << 3) & mask; /* bit 4:5 in the register */ 415 reg = TAS2552_CFG_1; 416 tas2552->pll_clk_id = clk_id; 417 tas2552->pll_clkin = freq; 418 break; 419 case TAS2552_PDM_CLK_PLL: 420 case TAS2552_PDM_CLK_IVCLKIN: 421 case TAS2552_PDM_CLK_BCLK: 422 case TAS2552_PDM_CLK_MCLK: 423 mask = TAS2552_PDM_CLK_SEL_MASK; 424 val = (clk_id >> 1) & mask; /* bit 0:1 in the register */ 425 reg = TAS2552_PDM_CFG; 426 tas2552->pdm_clk_id = clk_id; 427 tas2552->pdm_clk = freq; 428 break; 429 default: 430 dev_err(component->dev, "Invalid clk id: %d\n", clk_id); 431 return -EINVAL; 432 } 433 434 snd_soc_component_update_bits(component, reg, mask, val); 435 436 return 0; 437 } 438 439 static int tas2552_set_dai_tdm_slot(struct snd_soc_dai *dai, 440 unsigned int tx_mask, unsigned int rx_mask, 441 int slots, int slot_width) 442 { 443 struct snd_soc_component *component = dai->component; 444 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); 445 unsigned int lsb; 446 447 if (unlikely(!tx_mask)) { 448 dev_err(component->dev, "tx masks need to be non 0\n"); 449 return -EINVAL; 450 } 451 452 /* TDM based on DSP mode requires slots to be adjacent */ 453 lsb = __ffs(tx_mask); 454 if ((lsb + 1) != __fls(tx_mask)) { 455 dev_err(component->dev, "Invalid mask, slots must be adjacent\n"); 456 return -EINVAL; 457 } 458 459 tas2552->tdm_delay = lsb * slot_width; 460 461 /* DOUT in high-impedance on inactive bit clocks */ 462 snd_soc_component_update_bits(component, TAS2552_DOUT, 463 TAS2552_SDOUT_TRISTATE, TAS2552_SDOUT_TRISTATE); 464 465 return 0; 466 } 467 468 static int tas2552_mute(struct snd_soc_dai *dai, int mute, int direction) 469 { 470 u8 cfg1_reg = 0; 471 struct snd_soc_component *component = dai->component; 472 473 if (mute) 474 cfg1_reg |= TAS2552_MUTE; 475 476 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, cfg1_reg); 477 478 return 0; 479 } 480 481 #ifdef CONFIG_PM 482 static int tas2552_runtime_suspend(struct device *dev) 483 { 484 struct tas2552_data *tas2552 = dev_get_drvdata(dev); 485 486 tas2552_sw_shutdown(tas2552, 1); 487 488 regcache_cache_only(tas2552->regmap, true); 489 regcache_mark_dirty(tas2552->regmap); 490 491 gpiod_set_value(tas2552->enable_gpio, 0); 492 493 return 0; 494 } 495 496 static int tas2552_runtime_resume(struct device *dev) 497 { 498 struct tas2552_data *tas2552 = dev_get_drvdata(dev); 499 500 gpiod_set_value(tas2552->enable_gpio, 1); 501 502 tas2552_sw_shutdown(tas2552, 0); 503 504 regcache_cache_only(tas2552->regmap, false); 505 regcache_sync(tas2552->regmap); 506 507 return 0; 508 } 509 #endif 510 511 static const struct dev_pm_ops tas2552_pm = { 512 SET_RUNTIME_PM_OPS(tas2552_runtime_suspend, tas2552_runtime_resume, 513 NULL) 514 }; 515 516 static const struct snd_soc_dai_ops tas2552_speaker_dai_ops = { 517 .hw_params = tas2552_hw_params, 518 .prepare = tas2552_prepare, 519 .set_sysclk = tas2552_set_dai_sysclk, 520 .set_fmt = tas2552_set_dai_fmt, 521 .set_tdm_slot = tas2552_set_dai_tdm_slot, 522 .mute_stream = tas2552_mute, 523 .no_capture_mute = 1, 524 }; 525 526 /* Formats supported by TAS2552 driver. */ 527 #define TAS2552_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 528 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) 529 530 /* TAS2552 dai structure. */ 531 static struct snd_soc_dai_driver tas2552_dai[] = { 532 { 533 .name = "tas2552-amplifier", 534 .playback = { 535 .stream_name = "Playback", 536 .channels_min = 2, 537 .channels_max = 2, 538 .rates = SNDRV_PCM_RATE_8000_192000, 539 .formats = TAS2552_FORMATS, 540 }, 541 .ops = &tas2552_speaker_dai_ops, 542 }, 543 }; 544 545 /* 546 * DAC digital volumes. From -7 to 24 dB in 1 dB steps 547 */ 548 static DECLARE_TLV_DB_SCALE(dac_tlv, -700, 100, 0); 549 550 static const char * const tas2552_din_source_select[] = { 551 "Muted", 552 "Left", 553 "Right", 554 "Left + Right average", 555 }; 556 static SOC_ENUM_SINGLE_DECL(tas2552_din_source_enum, 557 TAS2552_CFG_3, 3, 558 tas2552_din_source_select); 559 560 static const struct snd_kcontrol_new tas2552_snd_controls[] = { 561 SOC_SINGLE_TLV("Speaker Driver Playback Volume", 562 TAS2552_PGA_GAIN, 0, 0x1f, 0, dac_tlv), 563 SOC_ENUM("DIN source", tas2552_din_source_enum), 564 }; 565 566 static int tas2552_component_probe(struct snd_soc_component *component) 567 { 568 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); 569 int ret; 570 571 tas2552->component = component; 572 573 ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies), 574 tas2552->supplies); 575 576 if (ret != 0) { 577 dev_err(component->dev, "Failed to enable supplies: %d\n", 578 ret); 579 return ret; 580 } 581 582 gpiod_set_value(tas2552->enable_gpio, 1); 583 584 ret = pm_runtime_resume_and_get(component->dev); 585 if (ret < 0) { 586 dev_err(component->dev, "Enabling device failed: %d\n", 587 ret); 588 goto probe_fail; 589 } 590 591 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, TAS2552_MUTE); 592 snd_soc_component_write(component, TAS2552_CFG_3, TAS2552_I2S_OUT_SEL | 593 TAS2552_DIN_SRC_SEL_AVG_L_R); 594 snd_soc_component_write(component, TAS2552_OUTPUT_DATA, 595 TAS2552_PDM_DATA_SEL_V_I | 596 TAS2552_R_DATA_OUT(TAS2552_DATA_OUT_V_DATA)); 597 snd_soc_component_write(component, TAS2552_BOOST_APT_CTRL, TAS2552_APT_DELAY_200 | 598 TAS2552_APT_THRESH_20_17); 599 600 snd_soc_component_write(component, TAS2552_CFG_2, TAS2552_BOOST_EN | TAS2552_APT_EN | 601 TAS2552_LIM_EN); 602 603 return 0; 604 605 probe_fail: 606 pm_runtime_put_noidle(component->dev); 607 gpiod_set_value(tas2552->enable_gpio, 0); 608 609 regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies), 610 tas2552->supplies); 611 return ret; 612 } 613 614 static void tas2552_component_remove(struct snd_soc_component *component) 615 { 616 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); 617 618 pm_runtime_put(component->dev); 619 620 gpiod_set_value(tas2552->enable_gpio, 0); 621 }; 622 623 #ifdef CONFIG_PM 624 static int tas2552_suspend(struct snd_soc_component *component) 625 { 626 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); 627 int ret; 628 629 ret = regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies), 630 tas2552->supplies); 631 632 if (ret != 0) 633 dev_err(component->dev, "Failed to disable supplies: %d\n", 634 ret); 635 return ret; 636 } 637 638 static int tas2552_resume(struct snd_soc_component *component) 639 { 640 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); 641 int ret; 642 643 ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies), 644 tas2552->supplies); 645 646 if (ret != 0) { 647 dev_err(component->dev, "Failed to enable supplies: %d\n", 648 ret); 649 } 650 651 return ret; 652 } 653 #else 654 #define tas2552_suspend NULL 655 #define tas2552_resume NULL 656 #endif 657 658 static const struct snd_soc_component_driver soc_component_dev_tas2552 = { 659 .probe = tas2552_component_probe, 660 .remove = tas2552_component_remove, 661 .suspend = tas2552_suspend, 662 .resume = tas2552_resume, 663 .controls = tas2552_snd_controls, 664 .num_controls = ARRAY_SIZE(tas2552_snd_controls), 665 .dapm_widgets = tas2552_dapm_widgets, 666 .num_dapm_widgets = ARRAY_SIZE(tas2552_dapm_widgets), 667 .dapm_routes = tas2552_audio_map, 668 .num_dapm_routes = ARRAY_SIZE(tas2552_audio_map), 669 .idle_bias_on = 1, 670 .endianness = 1, 671 }; 672 673 static const struct regmap_config tas2552_regmap_config = { 674 .reg_bits = 8, 675 .val_bits = 8, 676 677 .max_register = TAS2552_MAX_REG, 678 .reg_defaults = tas2552_reg_defs, 679 .num_reg_defaults = ARRAY_SIZE(tas2552_reg_defs), 680 .cache_type = REGCACHE_RBTREE, 681 }; 682 683 static int tas2552_probe(struct i2c_client *client) 684 { 685 struct device *dev; 686 struct tas2552_data *data; 687 int ret; 688 int i; 689 690 dev = &client->dev; 691 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); 692 if (data == NULL) 693 return -ENOMEM; 694 695 data->enable_gpio = devm_gpiod_get_optional(dev, "enable", 696 GPIOD_OUT_LOW); 697 if (IS_ERR(data->enable_gpio)) 698 return PTR_ERR(data->enable_gpio); 699 700 data->tas2552_client = client; 701 data->regmap = devm_regmap_init_i2c(client, &tas2552_regmap_config); 702 if (IS_ERR(data->regmap)) { 703 ret = PTR_ERR(data->regmap); 704 dev_err(&client->dev, "Failed to allocate register map: %d\n", 705 ret); 706 return ret; 707 } 708 709 for (i = 0; i < ARRAY_SIZE(data->supplies); i++) 710 data->supplies[i].supply = tas2552_supply_names[i]; 711 712 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies), 713 data->supplies); 714 if (ret != 0) { 715 dev_err(dev, "Failed to request supplies: %d\n", ret); 716 return ret; 717 } 718 719 pm_runtime_set_active(&client->dev); 720 pm_runtime_set_autosuspend_delay(&client->dev, 1000); 721 pm_runtime_use_autosuspend(&client->dev); 722 pm_runtime_enable(&client->dev); 723 pm_runtime_mark_last_busy(&client->dev); 724 pm_runtime_put_sync_autosuspend(&client->dev); 725 726 dev_set_drvdata(&client->dev, data); 727 728 ret = devm_snd_soc_register_component(&client->dev, 729 &soc_component_dev_tas2552, 730 tas2552_dai, ARRAY_SIZE(tas2552_dai)); 731 if (ret < 0) { 732 dev_err(&client->dev, "Failed to register component: %d\n", ret); 733 pm_runtime_get_noresume(&client->dev); 734 } 735 736 return ret; 737 } 738 739 static int tas2552_i2c_remove(struct i2c_client *client) 740 { 741 pm_runtime_disable(&client->dev); 742 return 0; 743 } 744 745 static const struct i2c_device_id tas2552_id[] = { 746 { "tas2552", 0 }, 747 { } 748 }; 749 MODULE_DEVICE_TABLE(i2c, tas2552_id); 750 751 #if IS_ENABLED(CONFIG_OF) 752 static const struct of_device_id tas2552_of_match[] = { 753 { .compatible = "ti,tas2552", }, 754 {}, 755 }; 756 MODULE_DEVICE_TABLE(of, tas2552_of_match); 757 #endif 758 759 static struct i2c_driver tas2552_i2c_driver = { 760 .driver = { 761 .name = "tas2552", 762 .of_match_table = of_match_ptr(tas2552_of_match), 763 .pm = &tas2552_pm, 764 }, 765 .probe_new = tas2552_probe, 766 .remove = tas2552_i2c_remove, 767 .id_table = tas2552_id, 768 }; 769 770 module_i2c_driver(tas2552_i2c_driver); 771 772 MODULE_AUTHOR("Dan Muprhy <dmurphy@ti.com>"); 773 MODULE_DESCRIPTION("TAS2552 Audio amplifier driver"); 774 MODULE_LICENSE("GPL"); 775