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1// SPDX-License-Identifier: GPL-2.02//3// Driver for the TAS5805M Audio Amplifier4//5// Author: Andy Liu <andy-liu@ti.com>6// Author: Daniel Beer <daniel.beer@igorinstitute.com>7//8// This is based on a driver originally written by Andy Liu at TI and9// posted here:10//11// https://e2e.ti.com/support/audio-group/audio/f/audio-forum/722027/linux-tas5825m-linux-drivers12//13// It has been simplified a little and reworked for the 5.x ALSA SoC API.14 15#include <linux/module.h>16#include <linux/moduleparam.h>17#include <linux/kernel.h>18#include <linux/firmware.h>19#include <linux/slab.h>20#include <linux/of.h>21#include <linux/init.h>22#include <linux/i2c.h>23#include <linux/regmap.h>24#include <linux/gpio/consumer.h>25#include <linux/regulator/consumer.h>26#include <linux/atomic.h>27#include <linux/workqueue.h>28 29#include <sound/soc.h>30#include <sound/pcm.h>31#include <sound/initval.h>32 33/* Datasheet-defined registers on page 0, book 0 */34#define REG_PAGE 0x0035#define REG_DEVICE_CTRL_1 0x0236#define REG_DEVICE_CTRL_2 0x0337#define REG_SIG_CH_CTRL 0x2838#define REG_SAP_CTRL_1 0x3339#define REG_FS_MON 0x3740#define REG_BCK_MON 0x3841#define REG_CLKDET_STATUS 0x3942#define REG_VOL_CTL 0x4c43#define REG_AGAIN 0x5444#define REG_ADR_PIN_CTRL 0x6045#define REG_ADR_PIN_CONFIG 0x6146#define REG_CHAN_FAULT 0x7047#define REG_GLOBAL_FAULT1 0x7148#define REG_GLOBAL_FAULT2 0x7249#define REG_FAULT 0x7850#define REG_BOOK 0x7f51 52/* DEVICE_CTRL_2 register values */53#define DCTRL2_MODE_DEEP_SLEEP 0x0054#define DCTRL2_MODE_SLEEP 0x0155#define DCTRL2_MODE_HIZ 0x0256#define DCTRL2_MODE_PLAY 0x0357 58#define DCTRL2_MUTE 0x0859#define DCTRL2_DIS_DSP 0x1060 61/* This sequence of register writes must always be sent, prior to the62 * 5ms delay while we wait for the DSP to boot.63 */64static const uint8_t dsp_cfg_preboot[] = {65 0x00, 0x00, 0x7f, 0x00, 0x03, 0x02, 0x01, 0x11,66 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,67 0x00, 0x00, 0x7f, 0x00, 0x03, 0x02,68};69 70static const uint32_t tas5805m_volume[] = {71 0x0000001B, /* 0, -110dB */ 0x0000001E, /* 1, -109dB */72 0x00000021, /* 2, -108dB */ 0x00000025, /* 3, -107dB */73 0x0000002A, /* 4, -106dB */ 0x0000002F, /* 5, -105dB */74 0x00000035, /* 6, -104dB */ 0x0000003B, /* 7, -103dB */75 0x00000043, /* 8, -102dB */ 0x0000004B, /* 9, -101dB */76 0x00000054, /* 10, -100dB */ 0x0000005E, /* 11, -99dB */77 0x0000006A, /* 12, -98dB */ 0x00000076, /* 13, -97dB */78 0x00000085, /* 14, -96dB */ 0x00000095, /* 15, -95dB */79 0x000000A7, /* 16, -94dB */ 0x000000BC, /* 17, -93dB */80 0x000000D3, /* 18, -92dB */ 0x000000EC, /* 19, -91dB */81 0x00000109, /* 20, -90dB */ 0x0000012A, /* 21, -89dB */82 0x0000014E, /* 22, -88dB */ 0x00000177, /* 23, -87dB */83 0x000001A4, /* 24, -86dB */ 0x000001D8, /* 25, -85dB */84 0x00000211, /* 26, -84dB */ 0x00000252, /* 27, -83dB */85 0x0000029A, /* 28, -82dB */ 0x000002EC, /* 29, -81dB */86 0x00000347, /* 30, -80dB */ 0x000003AD, /* 31, -79dB */87 0x00000420, /* 32, -78dB */ 0x000004A1, /* 33, -77dB */88 0x00000532, /* 34, -76dB */ 0x000005D4, /* 35, -75dB */89 0x0000068A, /* 36, -74dB */ 0x00000756, /* 37, -73dB */90 0x0000083B, /* 38, -72dB */ 0x0000093C, /* 39, -71dB */91 0x00000A5D, /* 40, -70dB */ 0x00000BA0, /* 41, -69dB */92 0x00000D0C, /* 42, -68dB */ 0x00000EA3, /* 43, -67dB */93 0x0000106C, /* 44, -66dB */ 0x0000126D, /* 45, -65dB */94 0x000014AD, /* 46, -64dB */ 0x00001733, /* 47, -63dB */95 0x00001A07, /* 48, -62dB */ 0x00001D34, /* 49, -61dB */96 0x000020C5, /* 50, -60dB */ 0x000024C4, /* 51, -59dB */97 0x00002941, /* 52, -58dB */ 0x00002E49, /* 53, -57dB */98 0x000033EF, /* 54, -56dB */ 0x00003A45, /* 55, -55dB */99 0x00004161, /* 56, -54dB */ 0x0000495C, /* 57, -53dB */100 0x0000524F, /* 58, -52dB */ 0x00005C5A, /* 59, -51dB */101 0x0000679F, /* 60, -50dB */ 0x00007444, /* 61, -49dB */102 0x00008274, /* 62, -48dB */ 0x0000925F, /* 63, -47dB */103 0x0000A43B, /* 64, -46dB */ 0x0000B845, /* 65, -45dB */104 0x0000CEC1, /* 66, -44dB */ 0x0000E7FB, /* 67, -43dB */105 0x00010449, /* 68, -42dB */ 0x0001240C, /* 69, -41dB */106 0x000147AE, /* 70, -40dB */ 0x00016FAA, /* 71, -39dB */107 0x00019C86, /* 72, -38dB */ 0x0001CEDC, /* 73, -37dB */108 0x00020756, /* 74, -36dB */ 0x000246B5, /* 75, -35dB */109 0x00028DCF, /* 76, -34dB */ 0x0002DD96, /* 77, -33dB */110 0x00033718, /* 78, -32dB */ 0x00039B87, /* 79, -31dB */111 0x00040C37, /* 80, -30dB */ 0x00048AA7, /* 81, -29dB */112 0x00051884, /* 82, -28dB */ 0x0005B7B1, /* 83, -27dB */113 0x00066A4A, /* 84, -26dB */ 0x000732AE, /* 85, -25dB */114 0x00081385, /* 86, -24dB */ 0x00090FCC, /* 87, -23dB */115 0x000A2ADB, /* 88, -22dB */ 0x000B6873, /* 89, -21dB */116 0x000CCCCD, /* 90, -20dB */ 0x000E5CA1, /* 91, -19dB */117 0x00101D3F, /* 92, -18dB */ 0x0012149A, /* 93, -17dB */118 0x00144961, /* 94, -16dB */ 0x0016C311, /* 95, -15dB */119 0x00198A13, /* 96, -14dB */ 0x001CA7D7, /* 97, -13dB */120 0x002026F3, /* 98, -12dB */ 0x00241347, /* 99, -11dB */121 0x00287A27, /* 100, -10dB */ 0x002D6A86, /* 101, -9dB */122 0x0032F52D, /* 102, -8dB */ 0x00392CEE, /* 103, -7dB */123 0x004026E7, /* 104, -6dB */ 0x0047FACD, /* 105, -5dB */124 0x0050C336, /* 106, -4dB */ 0x005A9DF8, /* 107, -3dB */125 0x0065AC8C, /* 108, -2dB */ 0x00721483, /* 109, -1dB */126 0x00800000, /* 110, 0dB */ 0x008F9E4D, /* 111, 1dB */127 0x00A12478, /* 112, 2dB */ 0x00B4CE08, /* 113, 3dB */128 0x00CADDC8, /* 114, 4dB */ 0x00E39EA9, /* 115, 5dB */129 0x00FF64C1, /* 116, 6dB */ 0x011E8E6A, /* 117, 7dB */130 0x0141857F, /* 118, 8dB */ 0x0168C0C6, /* 119, 9dB */131 0x0194C584, /* 120, 10dB */ 0x01C62940, /* 121, 11dB */132 0x01FD93C2, /* 122, 12dB */ 0x023BC148, /* 123, 13dB */133 0x02818508, /* 124, 14dB */ 0x02CFCC01, /* 125, 15dB */134 0x0327A01A, /* 126, 16dB */ 0x038A2BAD, /* 127, 17dB */135 0x03F8BD7A, /* 128, 18dB */ 0x0474CD1B, /* 129, 19dB */136 0x05000000, /* 130, 20dB */ 0x059C2F02, /* 131, 21dB */137 0x064B6CAE, /* 132, 22dB */ 0x07100C4D, /* 133, 23dB */138 0x07ECA9CD, /* 134, 24dB */ 0x08E43299, /* 135, 25dB */139 0x09F9EF8E, /* 136, 26dB */ 0x0B319025, /* 137, 27dB */140 0x0C8F36F2, /* 138, 28dB */ 0x0E1787B8, /* 139, 29dB */141 0x0FCFB725, /* 140, 30dB */ 0x11BD9C84, /* 141, 31dB */142 0x13E7C594, /* 142, 32dB */ 0x16558CCB, /* 143, 33dB */143 0x190F3254, /* 144, 34dB */ 0x1C1DF80E, /* 145, 35dB */144 0x1F8C4107, /* 146, 36dB */ 0x2365B4BF, /* 147, 37dB */145 0x27B766C2, /* 148, 38dB */ 0x2C900313, /* 149, 39dB */146 0x32000000, /* 150, 40dB */ 0x3819D612, /* 151, 41dB */147 0x3EF23ECA, /* 152, 42dB */ 0x46A07B07, /* 153, 43dB */148 0x4F3EA203, /* 154, 44dB */ 0x58E9F9F9, /* 155, 45dB */149 0x63C35B8E, /* 156, 46dB */ 0x6FEFA16D, /* 157, 47dB */150 0x7D982575, /* 158, 48dB */151};152 153#define TAS5805M_VOLUME_MAX ((int)ARRAY_SIZE(tas5805m_volume) - 1)154#define TAS5805M_VOLUME_MIN 0155 156struct tas5805m_priv {157 struct i2c_client *i2c;158 struct regulator *pvdd;159 struct gpio_desc *gpio_pdn_n;160 161 uint8_t *dsp_cfg_data;162 int dsp_cfg_len;163 164 struct regmap *regmap;165 166 int vol[2];167 bool is_powered;168 bool is_muted;169 170 struct work_struct work;171 struct mutex lock;172};173 174static void set_dsp_scale(struct regmap *rm, int offset, int vol)175{176 uint8_t v[4];177 uint32_t x = tas5805m_volume[vol];178 int i;179 180 for (i = 0; i < 4; i++) {181 v[3 - i] = x;182 x >>= 8;183 }184 185 regmap_bulk_write(rm, offset, v, ARRAY_SIZE(v));186}187 188static void tas5805m_refresh(struct tas5805m_priv *tas5805m)189{190 struct regmap *rm = tas5805m->regmap;191 192 dev_dbg(&tas5805m->i2c->dev, "refresh: is_muted=%d, vol=%d/%d\n",193 tas5805m->is_muted, tas5805m->vol[0], tas5805m->vol[1]);194 195 regmap_write(rm, REG_PAGE, 0x00);196 regmap_write(rm, REG_BOOK, 0x8c);197 regmap_write(rm, REG_PAGE, 0x2a);198 199 /* Refresh volume. The actual volume control documented in the200 * datasheet doesn't seem to work correctly. This is a pair of201 * DSP registers which are *not* documented in the datasheet.202 */203 set_dsp_scale(rm, 0x24, tas5805m->vol[0]);204 set_dsp_scale(rm, 0x28, tas5805m->vol[1]);205 206 regmap_write(rm, REG_PAGE, 0x00);207 regmap_write(rm, REG_BOOK, 0x00);208 209 /* Set/clear digital soft-mute */210 regmap_write(rm, REG_DEVICE_CTRL_2,211 (tas5805m->is_muted ? DCTRL2_MUTE : 0) |212 DCTRL2_MODE_PLAY);213}214 215static int tas5805m_vol_info(struct snd_kcontrol *kcontrol,216 struct snd_ctl_elem_info *uinfo)217{218 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;219 uinfo->count = 2;220 221 uinfo->value.integer.min = TAS5805M_VOLUME_MIN;222 uinfo->value.integer.max = TAS5805M_VOLUME_MAX;223 return 0;224}225 226static int tas5805m_vol_get(struct snd_kcontrol *kcontrol,227 struct snd_ctl_elem_value *ucontrol)228{229 struct snd_soc_component *component =230 snd_soc_kcontrol_component(kcontrol);231 struct tas5805m_priv *tas5805m =232 snd_soc_component_get_drvdata(component);233 234 mutex_lock(&tas5805m->lock);235 ucontrol->value.integer.value[0] = tas5805m->vol[0];236 ucontrol->value.integer.value[1] = tas5805m->vol[1];237 mutex_unlock(&tas5805m->lock);238 239 return 0;240}241 242static inline int volume_is_valid(int v)243{244 return (v >= TAS5805M_VOLUME_MIN) && (v <= TAS5805M_VOLUME_MAX);245}246 247static int tas5805m_vol_put(struct snd_kcontrol *kcontrol,248 struct snd_ctl_elem_value *ucontrol)249{250 struct snd_soc_component *component =251 snd_soc_kcontrol_component(kcontrol);252 struct tas5805m_priv *tas5805m =253 snd_soc_component_get_drvdata(component);254 int ret = 0;255 256 if (!(volume_is_valid(ucontrol->value.integer.value[0]) &&257 volume_is_valid(ucontrol->value.integer.value[1])))258 return -EINVAL;259 260 mutex_lock(&tas5805m->lock);261 if (tas5805m->vol[0] != ucontrol->value.integer.value[0] ||262 tas5805m->vol[1] != ucontrol->value.integer.value[1]) {263 tas5805m->vol[0] = ucontrol->value.integer.value[0];264 tas5805m->vol[1] = ucontrol->value.integer.value[1];265 dev_dbg(component->dev, "set vol=%d/%d (is_powered=%d)\n",266 tas5805m->vol[0], tas5805m->vol[1],267 tas5805m->is_powered);268 if (tas5805m->is_powered)269 tas5805m_refresh(tas5805m);270 ret = 1;271 }272 mutex_unlock(&tas5805m->lock);273 274 return ret;275}276 277static const struct snd_kcontrol_new tas5805m_snd_controls[] = {278 {279 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,280 .name = "Master Playback Volume",281 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |282 SNDRV_CTL_ELEM_ACCESS_READWRITE,283 .info = tas5805m_vol_info,284 .get = tas5805m_vol_get,285 .put = tas5805m_vol_put,286 },287};288 289static void send_cfg(struct regmap *rm,290 const uint8_t *s, unsigned int len)291{292 unsigned int i;293 294 for (i = 0; i + 1 < len; i += 2)295 regmap_write(rm, s[i], s[i + 1]);296}297 298/* The TAS5805M DSP can't be configured until the I2S clock has been299 * present and stable for 5ms, or else it won't boot and we get no300 * sound.301 */302static int tas5805m_trigger(struct snd_pcm_substream *substream, int cmd,303 struct snd_soc_dai *dai)304{305 struct snd_soc_component *component = dai->component;306 struct tas5805m_priv *tas5805m =307 snd_soc_component_get_drvdata(component);308 309 switch (cmd) {310 case SNDRV_PCM_TRIGGER_START:311 case SNDRV_PCM_TRIGGER_RESUME:312 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:313 dev_dbg(component->dev, "clock start\n");314 schedule_work(&tas5805m->work);315 break;316 317 case SNDRV_PCM_TRIGGER_STOP:318 case SNDRV_PCM_TRIGGER_SUSPEND:319 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:320 break;321 322 default:323 return -EINVAL;324 }325 326 return 0;327}328 329static void do_work(struct work_struct *work)330{331 struct tas5805m_priv *tas5805m =332 container_of(work, struct tas5805m_priv, work);333 struct regmap *rm = tas5805m->regmap;334 335 dev_dbg(&tas5805m->i2c->dev, "DSP startup\n");336 337 mutex_lock(&tas5805m->lock);338 /* We mustn't issue any I2C transactions until the I2S339 * clock is stable. Furthermore, we must allow a 5ms340 * delay after the first set of register writes to341 * allow the DSP to boot before configuring it.342 */343 usleep_range(5000, 10000);344 send_cfg(rm, dsp_cfg_preboot, ARRAY_SIZE(dsp_cfg_preboot));345 usleep_range(5000, 15000);346 send_cfg(rm, tas5805m->dsp_cfg_data, tas5805m->dsp_cfg_len);347 348 tas5805m->is_powered = true;349 tas5805m_refresh(tas5805m);350 mutex_unlock(&tas5805m->lock);351}352 353static int tas5805m_dac_event(struct snd_soc_dapm_widget *w,354 struct snd_kcontrol *kcontrol, int event)355{356 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);357 struct tas5805m_priv *tas5805m =358 snd_soc_component_get_drvdata(component);359 struct regmap *rm = tas5805m->regmap;360 361 if (event & SND_SOC_DAPM_PRE_PMD) {362 unsigned int chan, global1, global2;363 364 dev_dbg(component->dev, "DSP shutdown\n");365 cancel_work_sync(&tas5805m->work);366 367 mutex_lock(&tas5805m->lock);368 if (tas5805m->is_powered) {369 tas5805m->is_powered = false;370 371 regmap_write(rm, REG_PAGE, 0x00);372 regmap_write(rm, REG_BOOK, 0x00);373 374 regmap_read(rm, REG_CHAN_FAULT, &chan);375 regmap_read(rm, REG_GLOBAL_FAULT1, &global1);376 regmap_read(rm, REG_GLOBAL_FAULT2, &global2);377 378 dev_dbg(component->dev, "fault regs: CHAN=%02x, "379 "GLOBAL1=%02x, GLOBAL2=%02x\n",380 chan, global1, global2);381 382 regmap_write(rm, REG_DEVICE_CTRL_2, DCTRL2_MODE_HIZ);383 }384 mutex_unlock(&tas5805m->lock);385 }386 387 return 0;388}389 390static const struct snd_soc_dapm_route tas5805m_audio_map[] = {391 { "DAC", NULL, "DAC IN" },392 { "OUT", NULL, "DAC" },393};394 395static const struct snd_soc_dapm_widget tas5805m_dapm_widgets[] = {396 SND_SOC_DAPM_AIF_IN("DAC IN", "Playback", 0, SND_SOC_NOPM, 0, 0),397 SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0,398 tas5805m_dac_event, SND_SOC_DAPM_PRE_PMD),399 SND_SOC_DAPM_OUTPUT("OUT")400};401 402static const struct snd_soc_component_driver soc_codec_dev_tas5805m = {403 .controls = tas5805m_snd_controls,404 .num_controls = ARRAY_SIZE(tas5805m_snd_controls),405 .dapm_widgets = tas5805m_dapm_widgets,406 .num_dapm_widgets = ARRAY_SIZE(tas5805m_dapm_widgets),407 .dapm_routes = tas5805m_audio_map,408 .num_dapm_routes = ARRAY_SIZE(tas5805m_audio_map),409 .use_pmdown_time = 1,410 .endianness = 1,411};412 413static int tas5805m_mute(struct snd_soc_dai *dai, int mute, int direction)414{415 struct snd_soc_component *component = dai->component;416 struct tas5805m_priv *tas5805m =417 snd_soc_component_get_drvdata(component);418 419 mutex_lock(&tas5805m->lock);420 dev_dbg(component->dev, "set mute=%d (is_powered=%d)\n",421 mute, tas5805m->is_powered);422 423 tas5805m->is_muted = mute;424 if (tas5805m->is_powered)425 tas5805m_refresh(tas5805m);426 mutex_unlock(&tas5805m->lock);427 428 return 0;429}430 431static const struct snd_soc_dai_ops tas5805m_dai_ops = {432 .trigger = tas5805m_trigger,433 .mute_stream = tas5805m_mute,434 .no_capture_mute = 1,435};436 437static struct snd_soc_dai_driver tas5805m_dai = {438 .name = "tas5805m-amplifier",439 .playback = {440 .stream_name = "Playback",441 .channels_min = 2,442 .channels_max = 2,443 .rates = SNDRV_PCM_RATE_48000,444 .formats = SNDRV_PCM_FMTBIT_S32_LE,445 },446 .ops = &tas5805m_dai_ops,447};448 449static const struct regmap_config tas5805m_regmap = {450 .reg_bits = 8,451 .val_bits = 8,452 453 /* We have quite a lot of multi-level bank switching and a454 * relatively small number of register writes between bank455 * switches.456 */457 .cache_type = REGCACHE_NONE,458};459 460static int tas5805m_i2c_probe(struct i2c_client *i2c)461{462 struct device *dev = &i2c->dev;463 struct regmap *regmap;464 struct tas5805m_priv *tas5805m;465 char filename[128];466 const char *config_name;467 const struct firmware *fw;468 int ret;469 470 regmap = devm_regmap_init_i2c(i2c, &tas5805m_regmap);471 if (IS_ERR(regmap)) {472 ret = PTR_ERR(regmap);473 dev_err(dev, "unable to allocate register map: %d\n", ret);474 return ret;475 }476 477 tas5805m = devm_kzalloc(dev, sizeof(struct tas5805m_priv), GFP_KERNEL);478 if (!tas5805m)479 return -ENOMEM;480 481 tas5805m->i2c = i2c;482 tas5805m->pvdd = devm_regulator_get(dev, "pvdd");483 if (IS_ERR(tas5805m->pvdd)) {484 dev_err(dev, "failed to get pvdd supply: %ld\n",485 PTR_ERR(tas5805m->pvdd));486 return PTR_ERR(tas5805m->pvdd);487 }488 489 dev_set_drvdata(dev, tas5805m);490 tas5805m->regmap = regmap;491 tas5805m->gpio_pdn_n = devm_gpiod_get(dev, "pdn", GPIOD_OUT_LOW);492 if (IS_ERR(tas5805m->gpio_pdn_n)) {493 dev_err(dev, "error requesting PDN gpio: %ld\n",494 PTR_ERR(tas5805m->gpio_pdn_n));495 return PTR_ERR(tas5805m->gpio_pdn_n);496 }497 498 /* This configuration must be generated by PPC3. The file loaded499 * consists of a sequence of register writes, where bytes at500 * even indices are register addresses and those at odd indices501 * are register values.502 *503 * The fixed portion of PPC3's output prior to the 5ms delay504 * should be omitted.505 */506 if (device_property_read_string(dev, "ti,dsp-config-name",507 &config_name))508 config_name = "default";509 510 snprintf(filename, sizeof(filename), "tas5805m_dsp_%s.bin",511 config_name);512 ret = request_firmware(&fw, filename, dev);513 if (ret)514 return ret;515 516 if ((fw->size < 2) || (fw->size & 1)) {517 dev_err(dev, "firmware is invalid\n");518 release_firmware(fw);519 return -EINVAL;520 }521 522 tas5805m->dsp_cfg_len = fw->size;523 tas5805m->dsp_cfg_data = devm_kmemdup(dev, fw->data, fw->size, GFP_KERNEL);524 if (!tas5805m->dsp_cfg_data) {525 release_firmware(fw);526 return -ENOMEM;527 }528 529 release_firmware(fw);530 531 /* Do the first part of the power-on here, while we can expect532 * the I2S interface to be quiet. We must raise PDN# and then533 * wait 5ms before any I2S clock is sent, or else the internal534 * regulator apparently won't come on.535 *536 * Also, we must keep the device in power down for 100ms or so537 * after PVDD is applied, or else the ADR pin is sampled538 * incorrectly and the device comes up with an unpredictable I2C539 * address.540 */541 tas5805m->vol[0] = TAS5805M_VOLUME_MIN;542 tas5805m->vol[1] = TAS5805M_VOLUME_MIN;543 544 ret = regulator_enable(tas5805m->pvdd);545 if (ret < 0) {546 dev_err(dev, "failed to enable pvdd: %d\n", ret);547 return ret;548 }549 550 usleep_range(100000, 150000);551 gpiod_set_value(tas5805m->gpio_pdn_n, 1);552 usleep_range(10000, 15000);553 554 INIT_WORK(&tas5805m->work, do_work);555 mutex_init(&tas5805m->lock);556 557 /* Don't register through devm. We need to be able to unregister558 * the component prior to deasserting PDN#559 */560 ret = snd_soc_register_component(dev, &soc_codec_dev_tas5805m,561 &tas5805m_dai, 1);562 if (ret < 0) {563 dev_err(dev, "unable to register codec: %d\n", ret);564 gpiod_set_value(tas5805m->gpio_pdn_n, 0);565 regulator_disable(tas5805m->pvdd);566 return ret;567 }568 569 return 0;570}571 572static void tas5805m_i2c_remove(struct i2c_client *i2c)573{574 struct device *dev = &i2c->dev;575 struct tas5805m_priv *tas5805m = dev_get_drvdata(dev);576 577 cancel_work_sync(&tas5805m->work);578 snd_soc_unregister_component(dev);579 gpiod_set_value(tas5805m->gpio_pdn_n, 0);580 usleep_range(10000, 15000);581 regulator_disable(tas5805m->pvdd);582}583 584static const struct i2c_device_id tas5805m_i2c_id[] = {585 { "tas5805m", },586 { }587};588MODULE_DEVICE_TABLE(i2c, tas5805m_i2c_id);589 590#if IS_ENABLED(CONFIG_OF)591static const struct of_device_id tas5805m_of_match[] = {592 { .compatible = "ti,tas5805m", },593 { }594};595MODULE_DEVICE_TABLE(of, tas5805m_of_match);596#endif597 598static struct i2c_driver tas5805m_i2c_driver = {599 .probe = tas5805m_i2c_probe,600 .remove = tas5805m_i2c_remove,601 .id_table = tas5805m_i2c_id,602 .driver = {603 .name = "tas5805m",604 .of_match_table = of_match_ptr(tas5805m_of_match),605 },606};607 608module_i2c_driver(tas5805m_i2c_driver);609 610MODULE_AUTHOR("Andy Liu <andy-liu@ti.com>");611MODULE_AUTHOR("Daniel Beer <daniel.beer@igorinstitute.com>");612MODULE_DESCRIPTION("TAS5805M Audio Amplifier Driver");613MODULE_LICENSE("GPL v2");614