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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * tas2552.c - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier4 *5 * Copyright (C) 2014 - 2024 Texas Instruments Incorporated -6 * https://www.ti.com7 *8 * Author: Dan Murphy <dmurphy@ti.com>9 */10 11#include <linux/module.h>12#include <linux/errno.h>13#include <linux/device.h>14#include <linux/i2c.h>15#include <linux/pm_runtime.h>16#include <linux/regmap.h>17#include <linux/slab.h>18 19#include <linux/gpio/consumer.h>20#include <linux/regulator/consumer.h>21 22#include <sound/pcm.h>23#include <sound/pcm_params.h>24#include <sound/soc.h>25#include <sound/soc-dapm.h>26#include <sound/tlv.h>27#include <sound/tas2552-plat.h>28#include <dt-bindings/sound/tas2552.h>29 30#include "tas2552.h"31 32static const struct reg_default tas2552_reg_defs[] = {33 {TAS2552_CFG_1, 0x22},34 {TAS2552_CFG_3, 0x80},35 {TAS2552_DOUT, 0x00},36 {TAS2552_OUTPUT_DATA, 0xc0},37 {TAS2552_PDM_CFG, 0x01},38 {TAS2552_PGA_GAIN, 0x00},39 {TAS2552_BOOST_APT_CTRL, 0x0f},40 {TAS2552_RESERVED_0D, 0xbe},41 {TAS2552_LIMIT_RATE_HYS, 0x08},42 {TAS2552_CFG_2, 0xef},43 {TAS2552_SER_CTRL_1, 0x00},44 {TAS2552_SER_CTRL_2, 0x00},45 {TAS2552_PLL_CTRL_1, 0x10},46 {TAS2552_PLL_CTRL_2, 0x00},47 {TAS2552_PLL_CTRL_3, 0x00},48 {TAS2552_BTIP, 0x8f},49 {TAS2552_BTS_CTRL, 0x80},50 {TAS2552_LIMIT_RELEASE, 0x04},51 {TAS2552_LIMIT_INT_COUNT, 0x00},52 {TAS2552_EDGE_RATE_CTRL, 0x40},53 {TAS2552_VBAT_DATA, 0x00},54};55 56#define TAS2552_NUM_SUPPLIES 357static const char *tas2552_supply_names[TAS2552_NUM_SUPPLIES] = {58 "vbat", /* vbat voltage */59 "iovdd", /* I/O Voltage */60 "avdd", /* Analog DAC Voltage */61};62 63struct tas2552_data {64 struct snd_soc_component *component;65 struct regmap *regmap;66 struct i2c_client *tas2552_client;67 struct regulator_bulk_data supplies[TAS2552_NUM_SUPPLIES];68 struct gpio_desc *enable_gpio;69 unsigned char regs[TAS2552_VBAT_DATA];70 unsigned int pll_clkin;71 int pll_clk_id;72 unsigned int pdm_clk;73 int pdm_clk_id;74 75 unsigned int dai_fmt;76 unsigned int tdm_delay;77};78 79static int tas2552_post_event(struct snd_soc_dapm_widget *w,80 struct snd_kcontrol *kcontrol, int event)81{82 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);83 84 switch (event) {85 case SND_SOC_DAPM_POST_PMU:86 snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xc0);87 snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5),88 (1 << 5));89 snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 0);90 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS, 0);91 break;92 case SND_SOC_DAPM_POST_PMD:93 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS,94 TAS2552_SWS);95 snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 1);96 snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5), 0);97 snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xbe);98 break;99 }100 return 0;101}102 103/* Input mux controls */104static const char * const tas2552_input_texts[] = {105 "Digital", "Analog" };106static SOC_ENUM_SINGLE_DECL(tas2552_input_mux_enum, TAS2552_CFG_3, 7,107 tas2552_input_texts);108 109static const struct snd_kcontrol_new tas2552_input_mux_control =110 SOC_DAPM_ENUM("Route", tas2552_input_mux_enum);111 112static const struct snd_soc_dapm_widget tas2552_dapm_widgets[] =113{114 SND_SOC_DAPM_INPUT("IN"),115 116 /* MUX Controls */117 SND_SOC_DAPM_MUX("Input selection", SND_SOC_NOPM, 0, 0,118 &tas2552_input_mux_control),119 120 SND_SOC_DAPM_AIF_IN("DAC IN", "DAC Playback", 0, SND_SOC_NOPM, 0, 0),121 SND_SOC_DAPM_AIF_OUT("ASI OUT", "DAC Capture", 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 SND_SOC_DAPM_INPUT("DMIC")129};130 131static const struct snd_soc_dapm_route tas2552_audio_map[] = {132 {"DAC", NULL, "DAC IN"},133 {"Input selection", "Digital", "DAC"},134 {"Input selection", "Analog", "IN"},135 {"ClassD", NULL, "Input selection"},136 {"OUT", NULL, "ClassD"},137 {"ClassD", NULL, "PLL"},138 {"ASI OUT", NULL, "DMIC"}139};140 141#ifdef CONFIG_PM142static void tas2552_sw_shutdown(struct tas2552_data *tas2552, int sw_shutdown)143{144 u8 cfg1_reg = 0;145 146 if (!tas2552->component)147 return;148 149 if (sw_shutdown)150 cfg1_reg = TAS2552_SWS;151 152 snd_soc_component_update_bits(tas2552->component, TAS2552_CFG_1, TAS2552_SWS,153 cfg1_reg);154}155#endif156 157static int tas2552_setup_pll(struct snd_soc_component *component,158 struct snd_pcm_hw_params *params)159{160 struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);161 bool bypass_pll = false;162 unsigned int pll_clk = params_rate(params) * 512;163 unsigned int pll_clkin = tas2552->pll_clkin;164 u8 pll_enable;165 166 if (!pll_clkin) {167 if (tas2552->pll_clk_id != TAS2552_PLL_CLKIN_BCLK)168 return -EINVAL;169 170 pll_clkin = snd_soc_params_to_bclk(params);171 pll_clkin += tas2552->tdm_delay;172 }173 174 pll_enable = snd_soc_component_read(component, TAS2552_CFG_2) & TAS2552_PLL_ENABLE;175 snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0);176 177 if (pll_clkin == pll_clk)178 bypass_pll = true;179 180 if (bypass_pll) {181 /* By pass the PLL configuration */182 snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_2,183 TAS2552_PLL_BYPASS, TAS2552_PLL_BYPASS);184 } else {185 /* Fill in the PLL control registers for J & D186 * pll_clk = (.5 * pll_clkin * J.D) / 2^p187 * Need to fill in J and D here based on incoming freq188 */189 unsigned int d, q, t;190 u8 j;191 u8 pll_sel = (tas2552->pll_clk_id << 3) & TAS2552_PLL_SRC_MASK;192 u8 p = snd_soc_component_read(component, TAS2552_PLL_CTRL_1);193 194 p = (p >> 7);195 196recalc:197 t = (pll_clk * 2) << p;198 j = t / pll_clkin;199 d = t % pll_clkin;200 t = pll_clkin / 10000;201 q = d / (t + 1);202 d = q + ((9999 - pll_clkin % 10000) * (d / t - q)) / 10000;203 204 if (d && (pll_clkin < 512000 || pll_clkin > 9200000)) {205 if (tas2552->pll_clk_id == TAS2552_PLL_CLKIN_BCLK) {206 pll_clkin = 1800000;207 pll_sel = (TAS2552_PLL_CLKIN_1_8_FIXED << 3) &208 TAS2552_PLL_SRC_MASK;209 } else {210 pll_clkin = snd_soc_params_to_bclk(params);211 pll_clkin += tas2552->tdm_delay;212 pll_sel = (TAS2552_PLL_CLKIN_BCLK << 3) &213 TAS2552_PLL_SRC_MASK;214 }215 goto recalc;216 }217 218 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_PLL_SRC_MASK,219 pll_sel);220 221 snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_1,222 TAS2552_PLL_J_MASK, j);223 /* Will clear the PLL_BYPASS bit */224 snd_soc_component_write(component, TAS2552_PLL_CTRL_2,225 TAS2552_PLL_D_UPPER(d));226 snd_soc_component_write(component, TAS2552_PLL_CTRL_3,227 TAS2552_PLL_D_LOWER(d));228 }229 230 /* Restore PLL status */231 snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE,232 pll_enable);233 234 return 0;235}236 237static int tas2552_hw_params(struct snd_pcm_substream *substream,238 struct snd_pcm_hw_params *params,239 struct snd_soc_dai *dai)240{241 struct snd_soc_component *component = dai->component;242 struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);243 int cpf;244 u8 ser_ctrl1_reg, wclk_rate;245 246 switch (params_width(params)) {247 case 16:248 ser_ctrl1_reg = TAS2552_WORDLENGTH_16BIT;249 cpf = 32 + tas2552->tdm_delay;250 break;251 case 20:252 ser_ctrl1_reg = TAS2552_WORDLENGTH_20BIT;253 cpf = 64 + tas2552->tdm_delay;254 break;255 case 24:256 ser_ctrl1_reg = TAS2552_WORDLENGTH_24BIT;257 cpf = 64 + tas2552->tdm_delay;258 break;259 case 32:260 ser_ctrl1_reg = TAS2552_WORDLENGTH_32BIT;261 cpf = 64 + tas2552->tdm_delay;262 break;263 default:264 dev_err(component->dev, "Not supported sample size: %d\n",265 params_width(params));266 return -EINVAL;267 }268 269 if (cpf <= 32)270 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_32;271 else if (cpf <= 64)272 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_64;273 else if (cpf <= 128)274 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_128;275 else276 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_256;277 278 snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1,279 TAS2552_WORDLENGTH_MASK | TAS2552_CLKSPERFRAME_MASK,280 ser_ctrl1_reg);281 282 switch (params_rate(params)) {283 case 8000:284 wclk_rate = TAS2552_WCLK_FREQ_8KHZ;285 break;286 case 11025:287 case 12000:288 wclk_rate = TAS2552_WCLK_FREQ_11_12KHZ;289 break;290 case 16000:291 wclk_rate = TAS2552_WCLK_FREQ_16KHZ;292 break;293 case 22050:294 case 24000:295 wclk_rate = TAS2552_WCLK_FREQ_22_24KHZ;296 break;297 case 32000:298 wclk_rate = TAS2552_WCLK_FREQ_32KHZ;299 break;300 case 44100:301 case 48000:302 wclk_rate = TAS2552_WCLK_FREQ_44_48KHZ;303 break;304 case 88200:305 case 96000:306 wclk_rate = TAS2552_WCLK_FREQ_88_96KHZ;307 break;308 case 176400:309 case 192000:310 wclk_rate = TAS2552_WCLK_FREQ_176_192KHZ;311 break;312 default:313 dev_err(component->dev, "Not supported sample rate: %d\n",314 params_rate(params));315 return -EINVAL;316 }317 318 snd_soc_component_update_bits(component, TAS2552_CFG_3, TAS2552_WCLK_FREQ_MASK,319 wclk_rate);320 321 return tas2552_setup_pll(component, params);322}323 324#define TAS2552_DAI_FMT_MASK (TAS2552_BCLKDIR | \325 TAS2552_WCLKDIR | \326 TAS2552_DATAFORMAT_MASK)327static int tas2552_prepare(struct snd_pcm_substream *substream,328 struct snd_soc_dai *dai)329{330 struct snd_soc_component *component = dai->component;331 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);332 int delay = 0;333 334 /* TDM slot selection only valid in DSP_A/_B mode */335 if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_A)336 delay += (tas2552->tdm_delay + 1);337 else if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_B)338 delay += tas2552->tdm_delay;339 340 /* Configure data delay */341 snd_soc_component_write(component, TAS2552_SER_CTRL_2, delay);342 343 return 0;344}345 346static int tas2552_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)347{348 struct snd_soc_component *component = dai->component;349 struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);350 u8 serial_format;351 352 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {353 case SND_SOC_DAIFMT_CBC_CFC:354 serial_format = 0x00;355 break;356 case SND_SOC_DAIFMT_CBC_CFP:357 serial_format = TAS2552_WCLKDIR;358 break;359 case SND_SOC_DAIFMT_CBP_CFC:360 serial_format = TAS2552_BCLKDIR;361 break;362 case SND_SOC_DAIFMT_CBP_CFP:363 serial_format = (TAS2552_BCLKDIR | TAS2552_WCLKDIR);364 break;365 default:366 dev_vdbg(component->dev, "DAI Format master is not found\n");367 return -EINVAL;368 }369 370 switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK |371 SND_SOC_DAIFMT_INV_MASK)) {372 case (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF):373 break;374 case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF):375 case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF):376 serial_format |= TAS2552_DATAFORMAT_DSP;377 break;378 case (SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_NB_NF):379 serial_format |= TAS2552_DATAFORMAT_RIGHT_J;380 break;381 case (SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF):382 serial_format |= TAS2552_DATAFORMAT_LEFT_J;383 break;384 default:385 dev_vdbg(component->dev, "DAI Format is not found\n");386 return -EINVAL;387 }388 tas2552->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;389 390 snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1, TAS2552_DAI_FMT_MASK,391 serial_format);392 return 0;393}394 395static int tas2552_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,396 unsigned int freq, int dir)397{398 struct snd_soc_component *component = dai->component;399 struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);400 u8 reg, mask, val;401 402 switch (clk_id) {403 case TAS2552_PLL_CLKIN_MCLK:404 case TAS2552_PLL_CLKIN_IVCLKIN:405 if (freq < 512000 || freq > 24576000) {406 /* out of range PLL_CLKIN, fall back to use BCLK */407 dev_warn(component->dev, "Out of range PLL_CLKIN: %u\n",408 freq);409 clk_id = TAS2552_PLL_CLKIN_BCLK;410 freq = 0;411 }412 fallthrough;413 case TAS2552_PLL_CLKIN_BCLK:414 case TAS2552_PLL_CLKIN_1_8_FIXED:415 mask = TAS2552_PLL_SRC_MASK;416 val = (clk_id << 3) & mask; /* bit 4:5 in the register */417 reg = TAS2552_CFG_1;418 tas2552->pll_clk_id = clk_id;419 tas2552->pll_clkin = freq;420 break;421 case TAS2552_PDM_CLK_PLL:422 case TAS2552_PDM_CLK_IVCLKIN:423 case TAS2552_PDM_CLK_BCLK:424 case TAS2552_PDM_CLK_MCLK:425 mask = TAS2552_PDM_CLK_SEL_MASK;426 val = (clk_id >> 1) & mask; /* bit 0:1 in the register */427 reg = TAS2552_PDM_CFG;428 tas2552->pdm_clk_id = clk_id;429 tas2552->pdm_clk = freq;430 break;431 default:432 dev_err(component->dev, "Invalid clk id: %d\n", clk_id);433 return -EINVAL;434 }435 436 snd_soc_component_update_bits(component, reg, mask, val);437 438 return 0;439}440 441static int tas2552_set_dai_tdm_slot(struct snd_soc_dai *dai,442 unsigned int tx_mask, unsigned int rx_mask,443 int slots, int slot_width)444{445 struct snd_soc_component *component = dai->component;446 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);447 unsigned int lsb;448 449 if (unlikely(!tx_mask)) {450 dev_err(component->dev, "tx masks need to be non 0\n");451 return -EINVAL;452 }453 454 /* TDM based on DSP mode requires slots to be adjacent */455 lsb = __ffs(tx_mask);456 if ((lsb + 1) != __fls(tx_mask)) {457 dev_err(component->dev, "Invalid mask, slots must be adjacent\n");458 return -EINVAL;459 }460 461 tas2552->tdm_delay = lsb * slot_width;462 463 /* DOUT in high-impedance on inactive bit clocks */464 snd_soc_component_update_bits(component, TAS2552_DOUT,465 TAS2552_SDOUT_TRISTATE, TAS2552_SDOUT_TRISTATE);466 467 return 0;468}469 470static int tas2552_mute(struct snd_soc_dai *dai, int mute, int direction)471{472 u8 cfg1_reg = 0;473 struct snd_soc_component *component = dai->component;474 475 if (mute)476 cfg1_reg |= TAS2552_MUTE;477 478 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, cfg1_reg);479 480 return 0;481}482 483#ifdef CONFIG_PM484static int tas2552_runtime_suspend(struct device *dev)485{486 struct tas2552_data *tas2552 = dev_get_drvdata(dev);487 488 tas2552_sw_shutdown(tas2552, 1);489 490 regcache_cache_only(tas2552->regmap, true);491 regcache_mark_dirty(tas2552->regmap);492 493 gpiod_set_value(tas2552->enable_gpio, 0);494 495 return 0;496}497 498static int tas2552_runtime_resume(struct device *dev)499{500 struct tas2552_data *tas2552 = dev_get_drvdata(dev);501 502 gpiod_set_value(tas2552->enable_gpio, 1);503 504 tas2552_sw_shutdown(tas2552, 0);505 506 regcache_cache_only(tas2552->regmap, false);507 regcache_sync(tas2552->regmap);508 509 return 0;510}511#endif512 513static const struct dev_pm_ops tas2552_pm = {514 SET_RUNTIME_PM_OPS(tas2552_runtime_suspend, tas2552_runtime_resume,515 NULL)516};517 518static const struct snd_soc_dai_ops tas2552_speaker_dai_ops = {519 .hw_params = tas2552_hw_params,520 .prepare = tas2552_prepare,521 .set_sysclk = tas2552_set_dai_sysclk,522 .set_fmt = tas2552_set_dai_fmt,523 .set_tdm_slot = tas2552_set_dai_tdm_slot,524 .mute_stream = tas2552_mute,525 .no_capture_mute = 1,526};527 528/* Formats supported by TAS2552 driver. */529#define TAS2552_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\530 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)531 532/* TAS2552 dai structure. */533static struct snd_soc_dai_driver tas2552_dai[] = {534 {535 .name = "tas2552-amplifier",536 .playback = {537 .stream_name = "Playback",538 .channels_min = 2,539 .channels_max = 2,540 .rates = SNDRV_PCM_RATE_8000_192000,541 .formats = TAS2552_FORMATS,542 },543 .capture = {544 .stream_name = "Capture",545 .channels_min = 2,546 .channels_max = 2,547 .rates = SNDRV_PCM_RATE_8000_192000,548 .formats = TAS2552_FORMATS,549 },550 .ops = &tas2552_speaker_dai_ops,551 },552};553 554/*555 * DAC digital volumes. From -7 to 24 dB in 1 dB steps556 */557static DECLARE_TLV_DB_SCALE(dac_tlv, -700, 100, 0);558 559static const char * const tas2552_din_source_select[] = {560 "Muted",561 "Left",562 "Right",563 "Left + Right average",564};565static SOC_ENUM_SINGLE_DECL(tas2552_din_source_enum,566 TAS2552_CFG_3, 3,567 tas2552_din_source_select);568 569static const struct snd_kcontrol_new tas2552_snd_controls[] = {570 SOC_SINGLE_TLV("Speaker Driver Playback Volume",571 TAS2552_PGA_GAIN, 0, 0x1f, 0, dac_tlv),572 SOC_ENUM("DIN source", tas2552_din_source_enum),573};574 575static int tas2552_component_probe(struct snd_soc_component *component)576{577 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);578 int ret;579 580 tas2552->component = component;581 582 ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),583 tas2552->supplies);584 585 if (ret != 0) {586 dev_err(component->dev, "Failed to enable supplies: %d\n",587 ret);588 return ret;589 }590 591 gpiod_set_value(tas2552->enable_gpio, 1);592 593 ret = pm_runtime_resume_and_get(component->dev);594 if (ret < 0) {595 dev_err(component->dev, "Enabling device failed: %d\n",596 ret);597 goto probe_fail;598 }599 600 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, TAS2552_MUTE);601 snd_soc_component_write(component, TAS2552_CFG_3, TAS2552_I2S_OUT_SEL |602 TAS2552_DIN_SRC_SEL_AVG_L_R);603 snd_soc_component_write(component, TAS2552_OUTPUT_DATA,604 TAS2552_PDM_DATA_SEL_V_I |605 TAS2552_R_DATA_OUT(TAS2552_DATA_OUT_V_DATA));606 snd_soc_component_write(component, TAS2552_BOOST_APT_CTRL, TAS2552_APT_DELAY_200 |607 TAS2552_APT_THRESH_20_17);608 609 snd_soc_component_write(component, TAS2552_CFG_2, TAS2552_BOOST_EN | TAS2552_APT_EN |610 TAS2552_LIM_EN);611 612 return 0;613 614probe_fail:615 pm_runtime_put_noidle(component->dev);616 gpiod_set_value(tas2552->enable_gpio, 0);617 618 regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),619 tas2552->supplies);620 return ret;621}622 623static void tas2552_component_remove(struct snd_soc_component *component)624{625 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);626 627 pm_runtime_put(component->dev);628 629 gpiod_set_value(tas2552->enable_gpio, 0);630};631 632#ifdef CONFIG_PM633static int tas2552_suspend(struct snd_soc_component *component)634{635 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);636 int ret;637 638 ret = regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),639 tas2552->supplies);640 641 if (ret != 0)642 dev_err(component->dev, "Failed to disable supplies: %d\n",643 ret);644 return ret;645}646 647static int tas2552_resume(struct snd_soc_component *component)648{649 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);650 int ret;651 652 ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),653 tas2552->supplies);654 655 if (ret != 0) {656 dev_err(component->dev, "Failed to enable supplies: %d\n",657 ret);658 }659 660 return ret;661}662#else663#define tas2552_suspend NULL664#define tas2552_resume NULL665#endif666 667static const struct snd_soc_component_driver soc_component_dev_tas2552 = {668 .probe = tas2552_component_probe,669 .remove = tas2552_component_remove,670 .suspend = tas2552_suspend,671 .resume = tas2552_resume,672 .controls = tas2552_snd_controls,673 .num_controls = ARRAY_SIZE(tas2552_snd_controls),674 .dapm_widgets = tas2552_dapm_widgets,675 .num_dapm_widgets = ARRAY_SIZE(tas2552_dapm_widgets),676 .dapm_routes = tas2552_audio_map,677 .num_dapm_routes = ARRAY_SIZE(tas2552_audio_map),678 .idle_bias_on = 1,679 .endianness = 1,680};681 682static const struct regmap_config tas2552_regmap_config = {683 .reg_bits = 8,684 .val_bits = 8,685 686 .max_register = TAS2552_MAX_REG,687 .reg_defaults = tas2552_reg_defs,688 .num_reg_defaults = ARRAY_SIZE(tas2552_reg_defs),689 .cache_type = REGCACHE_RBTREE,690};691 692static int tas2552_probe(struct i2c_client *client)693{694 struct device *dev;695 struct tas2552_data *data;696 int ret;697 int i;698 699 dev = &client->dev;700 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);701 if (data == NULL)702 return -ENOMEM;703 704 data->enable_gpio = devm_gpiod_get_optional(dev, "enable",705 GPIOD_OUT_LOW);706 if (IS_ERR(data->enable_gpio))707 return PTR_ERR(data->enable_gpio);708 709 data->tas2552_client = client;710 data->regmap = devm_regmap_init_i2c(client, &tas2552_regmap_config);711 if (IS_ERR(data->regmap)) {712 ret = PTR_ERR(data->regmap);713 dev_err(&client->dev, "Failed to allocate register map: %d\n",714 ret);715 return ret;716 }717 718 for (i = 0; i < ARRAY_SIZE(data->supplies); i++)719 data->supplies[i].supply = tas2552_supply_names[i];720 721 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies),722 data->supplies);723 if (ret != 0) {724 dev_err(dev, "Failed to request supplies: %d\n", ret);725 return ret;726 }727 728 pm_runtime_set_active(&client->dev);729 pm_runtime_set_autosuspend_delay(&client->dev, 1000);730 pm_runtime_use_autosuspend(&client->dev);731 pm_runtime_enable(&client->dev);732 pm_runtime_mark_last_busy(&client->dev);733 pm_runtime_put_sync_autosuspend(&client->dev);734 735 dev_set_drvdata(&client->dev, data);736 737 ret = devm_snd_soc_register_component(&client->dev,738 &soc_component_dev_tas2552,739 tas2552_dai, ARRAY_SIZE(tas2552_dai));740 if (ret < 0) {741 dev_err(&client->dev, "Failed to register component: %d\n", ret);742 pm_runtime_get_noresume(&client->dev);743 }744 745 return ret;746}747 748static void tas2552_i2c_remove(struct i2c_client *client)749{750 pm_runtime_disable(&client->dev);751}752 753static const struct i2c_device_id tas2552_id[] = {754 { "tas2552" },755 { }756};757MODULE_DEVICE_TABLE(i2c, tas2552_id);758 759#if IS_ENABLED(CONFIG_OF)760static const struct of_device_id tas2552_of_match[] = {761 { .compatible = "ti,tas2552", },762 {},763};764MODULE_DEVICE_TABLE(of, tas2552_of_match);765#endif766 767static struct i2c_driver tas2552_i2c_driver = {768 .driver = {769 .name = "tas2552",770 .of_match_table = of_match_ptr(tas2552_of_match),771 .pm = &tas2552_pm,772 },773 .probe = tas2552_probe,774 .remove = tas2552_i2c_remove,775 .id_table = tas2552_id,776};777 778module_i2c_driver(tas2552_i2c_driver);779 780MODULE_AUTHOR("Dan Muprhy <dmurphy@ti.com>");781MODULE_DESCRIPTION("TAS2552 Audio amplifier driver");782MODULE_LICENSE("GPL");783