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Linux/sound/soc/codecs/tas5720.c

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  1 /*
  2  * tas5720.c - ALSA SoC Texas Instruments TAS5720 Mono Audio Amplifier
  3  *
  4  * Copyright (C)2015-2016 Texas Instruments Incorporated -  http://www.ti.com
  5  *
  6  * Author: Andreas Dannenberg <dannenberg@ti.com>
  7  *
  8  * This program is free software; you can redistribute it and/or
  9  * modify it under the terms of the GNU General Public License
 10  * version 2 as published by the Free Software Foundation.
 11  *
 12  * This program is distributed in the hope that it will be useful, but
 13  * WITHOUT ANY WARRANTY; without even the implied warranty of
 14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 15  * General Public License for more details.
 16  */
 17 
 18 #include <linux/module.h>
 19 #include <linux/errno.h>
 20 #include <linux/device.h>
 21 #include <linux/i2c.h>
 22 #include <linux/pm_runtime.h>
 23 #include <linux/regmap.h>
 24 #include <linux/slab.h>
 25 #include <linux/regulator/consumer.h>
 26 #include <linux/delay.h>
 27 
 28 #include <sound/pcm.h>
 29 #include <sound/pcm_params.h>
 30 #include <sound/soc.h>
 31 #include <sound/soc-dapm.h>
 32 #include <sound/tlv.h>
 33 
 34 #include "tas5720.h"
 35 
 36 /* Define how often to check (and clear) the fault status register (in ms) */
 37 #define TAS5720_FAULT_CHECK_INTERVAL            200
 38 
 39 enum tas572x_type {
 40         TAS5720,
 41         TAS5722,
 42 };
 43 
 44 static const char * const tas5720_supply_names[] = {
 45         "dvdd",         /* Digital power supply. Connect to 3.3-V supply. */
 46         "pvdd",         /* Class-D amp and analog power supply (connected). */
 47 };
 48 
 49 #define TAS5720_NUM_SUPPLIES    ARRAY_SIZE(tas5720_supply_names)
 50 
 51 struct tas5720_data {
 52         struct snd_soc_component *component;
 53         struct regmap *regmap;
 54         struct i2c_client *tas5720_client;
 55         enum tas572x_type devtype;
 56         struct regulator_bulk_data supplies[TAS5720_NUM_SUPPLIES];
 57         struct delayed_work fault_check_work;
 58         unsigned int last_fault;
 59 };
 60 
 61 static int tas5720_hw_params(struct snd_pcm_substream *substream,
 62                              struct snd_pcm_hw_params *params,
 63                              struct snd_soc_dai *dai)
 64 {
 65         struct snd_soc_component *component = dai->component;
 66         unsigned int rate = params_rate(params);
 67         bool ssz_ds;
 68         int ret;
 69 
 70         switch (rate) {
 71         case 44100:
 72         case 48000:
 73                 ssz_ds = false;
 74                 break;
 75         case 88200:
 76         case 96000:
 77                 ssz_ds = true;
 78                 break;
 79         default:
 80                 dev_err(component->dev, "unsupported sample rate: %u\n", rate);
 81                 return -EINVAL;
 82         }
 83 
 84         ret = snd_soc_component_update_bits(component, TAS5720_DIGITAL_CTRL1_REG,
 85                                   TAS5720_SSZ_DS, ssz_ds);
 86         if (ret < 0) {
 87                 dev_err(component->dev, "error setting sample rate: %d\n", ret);
 88                 return ret;
 89         }
 90 
 91         return 0;
 92 }
 93 
 94 static int tas5720_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 95 {
 96         struct snd_soc_component *component = dai->component;
 97         u8 serial_format;
 98         int ret;
 99 
100         if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) {
101                 dev_vdbg(component->dev, "DAI Format master is not found\n");
102                 return -EINVAL;
103         }
104 
105         switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK |
106                        SND_SOC_DAIFMT_INV_MASK)) {
107         case (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF):
108                 /* 1st data bit occur one BCLK cycle after the frame sync */
109                 serial_format = TAS5720_SAIF_I2S;
110                 break;
111         case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_NB_NF):
112                 /*
113                  * Note that although the TAS5720 does not have a dedicated DSP
114                  * mode it doesn't care about the LRCLK duty cycle during TDM
115                  * operation. Therefore we can use the device's I2S mode with
116                  * its delaying of the 1st data bit to receive DSP_A formatted
117                  * data. See device datasheet for additional details.
118                  */
119                 serial_format = TAS5720_SAIF_I2S;
120                 break;
121         case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF):
122                 /*
123                  * Similar to DSP_A, we can use the fact that the TAS5720 does
124                  * not care about the LRCLK duty cycle during TDM to receive
125                  * DSP_B formatted data in LEFTJ mode (no delaying of the 1st
126                  * data bit).
127                  */
128                 serial_format = TAS5720_SAIF_LEFTJ;
129                 break;
130         case (SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF):
131                 /* No delay after the frame sync */
132                 serial_format = TAS5720_SAIF_LEFTJ;
133                 break;
134         default:
135                 dev_vdbg(component->dev, "DAI Format is not found\n");
136                 return -EINVAL;
137         }
138 
139         ret = snd_soc_component_update_bits(component, TAS5720_DIGITAL_CTRL1_REG,
140                                   TAS5720_SAIF_FORMAT_MASK,
141                                   serial_format);
142         if (ret < 0) {
143                 dev_err(component->dev, "error setting SAIF format: %d\n", ret);
144                 return ret;
145         }
146 
147         return 0;
148 }
149 
150 static int tas5720_set_dai_tdm_slot(struct snd_soc_dai *dai,
151                                     unsigned int tx_mask, unsigned int rx_mask,
152                                     int slots, int slot_width)
153 {
154         struct snd_soc_component *component = dai->component;
155         unsigned int first_slot;
156         int ret;
157 
158         if (!tx_mask) {
159                 dev_err(component->dev, "tx masks must not be 0\n");
160                 return -EINVAL;
161         }
162 
163         /*
164          * Determine the first slot that is being requested. We will only
165          * use the first slot that is found since the TAS5720 is a mono
166          * amplifier.
167          */
168         first_slot = __ffs(tx_mask);
169 
170         if (first_slot > 7) {
171                 dev_err(component->dev, "slot selection out of bounds (%u)\n",
172                         first_slot);
173                 return -EINVAL;
174         }
175 
176         /* Enable manual TDM slot selection (instead of I2C ID based) */
177         ret = snd_soc_component_update_bits(component, TAS5720_DIGITAL_CTRL1_REG,
178                                   TAS5720_TDM_CFG_SRC, TAS5720_TDM_CFG_SRC);
179         if (ret < 0)
180                 goto error_snd_soc_component_update_bits;
181 
182         /* Configure the TDM slot to process audio from */
183         ret = snd_soc_component_update_bits(component, TAS5720_DIGITAL_CTRL2_REG,
184                                   TAS5720_TDM_SLOT_SEL_MASK, first_slot);
185         if (ret < 0)
186                 goto error_snd_soc_component_update_bits;
187 
188         return 0;
189 
190 error_snd_soc_component_update_bits:
191         dev_err(component->dev, "error configuring TDM mode: %d\n", ret);
192         return ret;
193 }
194 
195 static int tas5720_mute(struct snd_soc_dai *dai, int mute)
196 {
197         struct snd_soc_component *component = dai->component;
198         int ret;
199 
200         ret = snd_soc_component_update_bits(component, TAS5720_DIGITAL_CTRL2_REG,
201                                   TAS5720_MUTE, mute ? TAS5720_MUTE : 0);
202         if (ret < 0) {
203                 dev_err(component->dev, "error (un-)muting device: %d\n", ret);
204                 return ret;
205         }
206 
207         return 0;
208 }
209 
210 static void tas5720_fault_check_work(struct work_struct *work)
211 {
212         struct tas5720_data *tas5720 = container_of(work, struct tas5720_data,
213                         fault_check_work.work);
214         struct device *dev = tas5720->component->dev;
215         unsigned int curr_fault;
216         int ret;
217 
218         ret = regmap_read(tas5720->regmap, TAS5720_FAULT_REG, &curr_fault);
219         if (ret < 0) {
220                 dev_err(dev, "failed to read FAULT register: %d\n", ret);
221                 goto out;
222         }
223 
224         /* Check/handle all errors except SAIF clock errors */
225         curr_fault &= TAS5720_OCE | TAS5720_DCE | TAS5720_OTE;
226 
227         /*
228          * Only flag errors once for a given occurrence. This is needed as
229          * the TAS5720 will take time clearing the fault condition internally
230          * during which we don't want to bombard the system with the same
231          * error message over and over.
232          */
233         if ((curr_fault & TAS5720_OCE) && !(tas5720->last_fault & TAS5720_OCE))
234                 dev_crit(dev, "experienced an over current hardware fault\n");
235 
236         if ((curr_fault & TAS5720_DCE) && !(tas5720->last_fault & TAS5720_DCE))
237                 dev_crit(dev, "experienced a DC detection fault\n");
238 
239         if ((curr_fault & TAS5720_OTE) && !(tas5720->last_fault & TAS5720_OTE))
240                 dev_crit(dev, "experienced an over temperature fault\n");
241 
242         /* Store current fault value so we can detect any changes next time */
243         tas5720->last_fault = curr_fault;
244 
245         if (!curr_fault)
246                 goto out;
247 
248         /*
249          * Periodically toggle SDZ (shutdown bit) H->L->H to clear any latching
250          * faults as long as a fault condition persists. Always going through
251          * the full sequence no matter the first return value to minimizes
252          * chances for the device to end up in shutdown mode.
253          */
254         ret = regmap_write_bits(tas5720->regmap, TAS5720_POWER_CTRL_REG,
255                                 TAS5720_SDZ, 0);
256         if (ret < 0)
257                 dev_err(dev, "failed to write POWER_CTRL register: %d\n", ret);
258 
259         ret = regmap_write_bits(tas5720->regmap, TAS5720_POWER_CTRL_REG,
260                                 TAS5720_SDZ, TAS5720_SDZ);
261         if (ret < 0)
262                 dev_err(dev, "failed to write POWER_CTRL register: %d\n", ret);
263 
264 out:
265         /* Schedule the next fault check at the specified interval */
266         schedule_delayed_work(&tas5720->fault_check_work,
267                               msecs_to_jiffies(TAS5720_FAULT_CHECK_INTERVAL));
268 }
269 
270 static int tas5720_codec_probe(struct snd_soc_component *component)
271 {
272         struct tas5720_data *tas5720 = snd_soc_component_get_drvdata(component);
273         unsigned int device_id, expected_device_id;
274         int ret;
275 
276         tas5720->component = component;
277 
278         ret = regulator_bulk_enable(ARRAY_SIZE(tas5720->supplies),
279                                     tas5720->supplies);
280         if (ret != 0) {
281                 dev_err(component->dev, "failed to enable supplies: %d\n", ret);
282                 return ret;
283         }
284 
285         /*
286          * Take a liberal approach to checking the device ID to allow the
287          * driver to be used even if the device ID does not match, however
288          * issue a warning if there is a mismatch.
289          */
290         ret = regmap_read(tas5720->regmap, TAS5720_DEVICE_ID_REG, &device_id);
291         if (ret < 0) {
292                 dev_err(component->dev, "failed to read device ID register: %d\n",
293                         ret);
294                 goto probe_fail;
295         }
296 
297         switch (tas5720->devtype) {
298         case TAS5720:
299                 expected_device_id = TAS5720_DEVICE_ID;
300                 break;
301         case TAS5722:
302                 expected_device_id = TAS5722_DEVICE_ID;
303                 break;
304         default:
305                 dev_err(component->dev, "unexpected private driver data\n");
306                 return -EINVAL;
307         }
308 
309         if (device_id != expected_device_id)
310                 dev_warn(component->dev, "wrong device ID. expected: %u read: %u\n",
311                          expected_device_id, device_id);
312 
313         /* Set device to mute */
314         ret = snd_soc_component_update_bits(component, TAS5720_DIGITAL_CTRL2_REG,
315                                   TAS5720_MUTE, TAS5720_MUTE);
316         if (ret < 0)
317                 goto error_snd_soc_component_update_bits;
318 
319         /*
320          * Enter shutdown mode - our default when not playing audio - to
321          * minimize current consumption. On the TAS5720 there is no real down
322          * side doing so as all device registers are preserved and the wakeup
323          * of the codec is rather quick which we do using a dapm widget.
324          */
325         ret = snd_soc_component_update_bits(component, TAS5720_POWER_CTRL_REG,
326                                   TAS5720_SDZ, 0);
327         if (ret < 0)
328                 goto error_snd_soc_component_update_bits;
329 
330         INIT_DELAYED_WORK(&tas5720->fault_check_work, tas5720_fault_check_work);
331 
332         return 0;
333 
334 error_snd_soc_component_update_bits:
335         dev_err(component->dev, "error configuring device registers: %d\n", ret);
336 
337 probe_fail:
338         regulator_bulk_disable(ARRAY_SIZE(tas5720->supplies),
339                                tas5720->supplies);
340         return ret;
341 }
342 
343 static void tas5720_codec_remove(struct snd_soc_component *component)
344 {
345         struct tas5720_data *tas5720 = snd_soc_component_get_drvdata(component);
346         int ret;
347 
348         cancel_delayed_work_sync(&tas5720->fault_check_work);
349 
350         ret = regulator_bulk_disable(ARRAY_SIZE(tas5720->supplies),
351                                      tas5720->supplies);
352         if (ret < 0)
353                 dev_err(component->dev, "failed to disable supplies: %d\n", ret);
354 };
355 
356 static int tas5720_dac_event(struct snd_soc_dapm_widget *w,
357                              struct snd_kcontrol *kcontrol, int event)
358 {
359         struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
360         struct tas5720_data *tas5720 = snd_soc_component_get_drvdata(component);
361         int ret;
362 
363         if (event & SND_SOC_DAPM_POST_PMU) {
364                 /* Take TAS5720 out of shutdown mode */
365                 ret = snd_soc_component_update_bits(component, TAS5720_POWER_CTRL_REG,
366                                           TAS5720_SDZ, TAS5720_SDZ);
367                 if (ret < 0) {
368                         dev_err(component->dev, "error waking component: %d\n", ret);
369                         return ret;
370                 }
371 
372                 /*
373                  * Observe codec shutdown-to-active time. The datasheet only
374                  * lists a nominal value however just use-it as-is without
375                  * additional padding to minimize the delay introduced in
376                  * starting to play audio (actually there is other setup done
377                  * by the ASoC framework that will provide additional delays,
378                  * so we should always be safe).
379                  */
380                 msleep(25);
381 
382                 /* Turn on TAS5720 periodic fault checking/handling */
383                 tas5720->last_fault = 0;
384                 schedule_delayed_work(&tas5720->fault_check_work,
385                                 msecs_to_jiffies(TAS5720_FAULT_CHECK_INTERVAL));
386         } else if (event & SND_SOC_DAPM_PRE_PMD) {
387                 /* Disable TAS5720 periodic fault checking/handling */
388                 cancel_delayed_work_sync(&tas5720->fault_check_work);
389 
390                 /* Place TAS5720 in shutdown mode to minimize current draw */
391                 ret = snd_soc_component_update_bits(component, TAS5720_POWER_CTRL_REG,
392                                           TAS5720_SDZ, 0);
393                 if (ret < 0) {
394                         dev_err(component->dev, "error shutting down component: %d\n",
395                                 ret);
396                         return ret;
397                 }
398         }
399 
400         return 0;
401 }
402 
403 #ifdef CONFIG_PM
404 static int tas5720_suspend(struct snd_soc_component *component)
405 {
406         struct tas5720_data *tas5720 = snd_soc_component_get_drvdata(component);
407         int ret;
408 
409         regcache_cache_only(tas5720->regmap, true);
410         regcache_mark_dirty(tas5720->regmap);
411 
412         ret = regulator_bulk_disable(ARRAY_SIZE(tas5720->supplies),
413                                      tas5720->supplies);
414         if (ret < 0)
415                 dev_err(component->dev, "failed to disable supplies: %d\n", ret);
416 
417         return ret;
418 }
419 
420 static int tas5720_resume(struct snd_soc_component *component)
421 {
422         struct tas5720_data *tas5720 = snd_soc_component_get_drvdata(component);
423         int ret;
424 
425         ret = regulator_bulk_enable(ARRAY_SIZE(tas5720->supplies),
426                                     tas5720->supplies);
427         if (ret < 0) {
428                 dev_err(component->dev, "failed to enable supplies: %d\n", ret);
429                 return ret;
430         }
431 
432         regcache_cache_only(tas5720->regmap, false);
433 
434         ret = regcache_sync(tas5720->regmap);
435         if (ret < 0) {
436                 dev_err(component->dev, "failed to sync regcache: %d\n", ret);
437                 return ret;
438         }
439 
440         return 0;
441 }
442 #else
443 #define tas5720_suspend NULL
444 #define tas5720_resume NULL
445 #endif
446 
447 static bool tas5720_is_volatile_reg(struct device *dev, unsigned int reg)
448 {
449         switch (reg) {
450         case TAS5720_DEVICE_ID_REG:
451         case TAS5720_FAULT_REG:
452                 return true;
453         default:
454                 return false;
455         }
456 }
457 
458 static const struct regmap_config tas5720_regmap_config = {
459         .reg_bits = 8,
460         .val_bits = 8,
461 
462         .max_register = TAS5720_MAX_REG,
463         .cache_type = REGCACHE_RBTREE,
464         .volatile_reg = tas5720_is_volatile_reg,
465 };
466 
467 static const struct regmap_config tas5722_regmap_config = {
468         .reg_bits = 8,
469         .val_bits = 8,
470 
471         .max_register = TAS5722_MAX_REG,
472         .cache_type = REGCACHE_RBTREE,
473         .volatile_reg = tas5720_is_volatile_reg,
474 };
475 
476 /*
477  * DAC analog gain. There are four discrete values to select from, ranging
478  * from 19.2 dB to 26.3dB.
479  */
480 static const DECLARE_TLV_DB_RANGE(dac_analog_tlv,
481         0x0, 0x0, TLV_DB_SCALE_ITEM(1920, 0, 0),
482         0x1, 0x1, TLV_DB_SCALE_ITEM(2070, 0, 0),
483         0x2, 0x2, TLV_DB_SCALE_ITEM(2350, 0, 0),
484         0x3, 0x3, TLV_DB_SCALE_ITEM(2630, 0, 0),
485 );
486 
487 /*
488  * DAC digital volumes. From -103.5 to 24 dB in 0.5 dB steps. Note that
489  * setting the gain below -100 dB (register value <0x7) is effectively a MUTE
490  * as per device datasheet.
491  */
492 static DECLARE_TLV_DB_SCALE(dac_tlv, -10350, 50, 0);
493 
494 static const struct snd_kcontrol_new tas5720_snd_controls[] = {
495         SOC_SINGLE_TLV("Speaker Driver Playback Volume",
496                        TAS5720_VOLUME_CTRL_REG, 0, 0xff, 0, dac_tlv),
497         SOC_SINGLE_TLV("Speaker Driver Analog Gain", TAS5720_ANALOG_CTRL_REG,
498                        TAS5720_ANALOG_GAIN_SHIFT, 3, 0, dac_analog_tlv),
499 };
500 
501 static const struct snd_soc_dapm_widget tas5720_dapm_widgets[] = {
502         SND_SOC_DAPM_AIF_IN("DAC IN", "Playback", 0, SND_SOC_NOPM, 0, 0),
503         SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas5720_dac_event,
504                            SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
505         SND_SOC_DAPM_OUTPUT("OUT")
506 };
507 
508 static const struct snd_soc_dapm_route tas5720_audio_map[] = {
509         { "DAC", NULL, "DAC IN" },
510         { "OUT", NULL, "DAC" },
511 };
512 
513 static const struct snd_soc_component_driver soc_component_dev_tas5720 = {
514         .probe                  = tas5720_codec_probe,
515         .remove                 = tas5720_codec_remove,
516         .suspend                = tas5720_suspend,
517         .resume                 = tas5720_resume,
518         .controls               = tas5720_snd_controls,
519         .num_controls           = ARRAY_SIZE(tas5720_snd_controls),
520         .dapm_widgets           = tas5720_dapm_widgets,
521         .num_dapm_widgets       = ARRAY_SIZE(tas5720_dapm_widgets),
522         .dapm_routes            = tas5720_audio_map,
523         .num_dapm_routes        = ARRAY_SIZE(tas5720_audio_map),
524         .idle_bias_on           = 1,
525         .use_pmdown_time        = 1,
526         .endianness             = 1,
527         .non_legacy_dai_naming  = 1,
528 };
529 
530 /* PCM rates supported by the TAS5720 driver */
531 #define TAS5720_RATES   (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
532                          SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
533 
534 /* Formats supported by TAS5720 driver */
535 #define TAS5720_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE |\
536                          SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE)
537 
538 static const struct snd_soc_dai_ops tas5720_speaker_dai_ops = {
539         .hw_params      = tas5720_hw_params,
540         .set_fmt        = tas5720_set_dai_fmt,
541         .set_tdm_slot   = tas5720_set_dai_tdm_slot,
542         .digital_mute   = tas5720_mute,
543 };
544 
545 /*
546  * TAS5720 DAI structure
547  *
548  * Note that were are advertising .playback.channels_max = 2 despite this being
549  * a mono amplifier. The reason for that is that some serial ports such as TI's
550  * McASP module have a minimum number of channels (2) that they can output.
551  * Advertising more channels than we have will allow us to interface with such
552  * a serial port without really any negative side effects as the TAS5720 will
553  * simply ignore any extra channel(s) asides from the one channel that is
554  * configured to be played back.
555  */
556 static struct snd_soc_dai_driver tas5720_dai[] = {
557         {
558                 .name = "tas5720-amplifier",
559                 .playback = {
560                         .stream_name = "Playback",
561                         .channels_min = 1,
562                         .channels_max = 2,
563                         .rates = TAS5720_RATES,
564                         .formats = TAS5720_FORMATS,
565                 },
566                 .ops = &tas5720_speaker_dai_ops,
567         },
568 };
569 
570 static int tas5720_probe(struct i2c_client *client,
571                          const struct i2c_device_id *id)
572 {
573         struct device *dev = &client->dev;
574         struct tas5720_data *data;
575         const struct regmap_config *regmap_config;
576         int ret;
577         int i;
578 
579         data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
580         if (!data)
581                 return -ENOMEM;
582 
583         data->tas5720_client = client;
584         data->devtype = id->driver_data;
585 
586         switch (id->driver_data) {
587         case TAS5720:
588                 regmap_config = &tas5720_regmap_config;
589                 break;
590         case TAS5722:
591                 regmap_config = &tas5722_regmap_config;
592                 break;
593         default:
594                 dev_err(dev, "unexpected private driver data\n");
595                 return -EINVAL;
596         }
597         data->regmap = devm_regmap_init_i2c(client, regmap_config);
598         if (IS_ERR(data->regmap)) {
599                 ret = PTR_ERR(data->regmap);
600                 dev_err(dev, "failed to allocate register map: %d\n", ret);
601                 return ret;
602         }
603 
604         for (i = 0; i < ARRAY_SIZE(data->supplies); i++)
605                 data->supplies[i].supply = tas5720_supply_names[i];
606 
607         ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies),
608                                       data->supplies);
609         if (ret != 0) {
610                 dev_err(dev, "failed to request supplies: %d\n", ret);
611                 return ret;
612         }
613 
614         dev_set_drvdata(dev, data);
615 
616         ret = devm_snd_soc_register_component(&client->dev,
617                                      &soc_component_dev_tas5720,
618                                      tas5720_dai, ARRAY_SIZE(tas5720_dai));
619         if (ret < 0) {
620                 dev_err(dev, "failed to register component: %d\n", ret);
621                 return ret;
622         }
623 
624         return 0;
625 }
626 
627 static const struct i2c_device_id tas5720_id[] = {
628         { "tas5720", TAS5720 },
629         { "tas5722", TAS5722 },
630         { }
631 };
632 MODULE_DEVICE_TABLE(i2c, tas5720_id);
633 
634 #if IS_ENABLED(CONFIG_OF)
635 static const struct of_device_id tas5720_of_match[] = {
636         { .compatible = "ti,tas5720", },
637         { .compatible = "ti,tas5722", },
638         { },
639 };
640 MODULE_DEVICE_TABLE(of, tas5720_of_match);
641 #endif
642 
643 static struct i2c_driver tas5720_i2c_driver = {
644         .driver = {
645                 .name = "tas5720",
646                 .of_match_table = of_match_ptr(tas5720_of_match),
647         },
648         .probe = tas5720_probe,
649         .id_table = tas5720_id,
650 };
651 
652 module_i2c_driver(tas5720_i2c_driver);
653 
654 MODULE_AUTHOR("Andreas Dannenberg <dannenberg@ti.com>");
655 MODULE_DESCRIPTION("TAS5720 Audio amplifier driver");
656 MODULE_LICENSE("GPL");
657 

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