1 // SPDX-License-Identifier: GPL-2.0
3 * ALSA SoC Texas Instruments TAS6424 Quad-Channel Audio Amplifier
5 * Copyright (C) 2016-2017 Texas Instruments Incorporated - http://www.ti.com/
6 * Author: Andreas Dannenberg <dannenberg@ti.com>
7 * Andrew F. Davis <afd@ti.com>
10 #include <linux/module.h>
11 #include <linux/errno.h>
12 #include <linux/device.h>
13 #include <linux/i2c.h>
14 #include <linux/pm_runtime.h>
15 #include <linux/regmap.h>
16 #include <linux/slab.h>
17 #include <linux/regulator/consumer.h>
18 #include <linux/delay.h>
20 #include <sound/pcm.h>
21 #include <sound/pcm_params.h>
22 #include <sound/soc.h>
23 #include <sound/soc-dapm.h>
24 #include <sound/tlv.h>
28 /* Define how often to check (and clear) the fault status register (in ms) */
29 #define TAS6424_FAULT_CHECK_INTERVAL 200
31 static const char * const tas6424_supply_names[] = {
32 "dvdd", /* Digital power supply. Connect to 3.3-V supply. */
33 "vbat", /* Supply used for higher voltage analog circuits. */
34 "pvdd", /* Class-D amp output FETs supply. */
36 #define TAS6424_NUM_SUPPLIES ARRAY_SIZE(tas6424_supply_names)
40 struct regmap *regmap;
41 struct regulator_bulk_data supplies[TAS6424_NUM_SUPPLIES];
42 struct delayed_work fault_check_work;
43 unsigned int last_fault1;
44 unsigned int last_fault2;
45 unsigned int last_warn;
49 * DAC digital volumes. From -103.5 to 24 dB in 0.5 dB steps. Note that
50 * setting the gain below -100 dB (register value <0x7) is effectively a MUTE
51 * as per device datasheet.
53 static DECLARE_TLV_DB_SCALE(dac_tlv, -10350, 50, 0);
55 static const struct snd_kcontrol_new tas6424_snd_controls[] = {
56 SOC_SINGLE_TLV("Speaker Driver CH1 Playback Volume",
57 TAS6424_CH1_VOL_CTRL, 0, 0xff, 0, dac_tlv),
58 SOC_SINGLE_TLV("Speaker Driver CH2 Playback Volume",
59 TAS6424_CH2_VOL_CTRL, 0, 0xff, 0, dac_tlv),
60 SOC_SINGLE_TLV("Speaker Driver CH3 Playback Volume",
61 TAS6424_CH3_VOL_CTRL, 0, 0xff, 0, dac_tlv),
62 SOC_SINGLE_TLV("Speaker Driver CH4 Playback Volume",
63 TAS6424_CH4_VOL_CTRL, 0, 0xff, 0, dac_tlv),
66 static int tas6424_dac_event(struct snd_soc_dapm_widget *w,
67 struct snd_kcontrol *kcontrol, int event)
69 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
70 struct tas6424_data *tas6424 = snd_soc_codec_get_drvdata(codec);
72 dev_dbg(codec->dev, "%s() event=0x%0x\n", __func__, event);
74 if (event & SND_SOC_DAPM_POST_PMU) {
75 /* Observe codec shutdown-to-active time */
78 /* Turn on TAS6424 periodic fault checking/handling */
79 tas6424->last_fault1 = 0;
80 tas6424->last_fault2 = 0;
81 tas6424->last_warn = 0;
82 schedule_delayed_work(&tas6424->fault_check_work,
83 msecs_to_jiffies(TAS6424_FAULT_CHECK_INTERVAL));
84 } else if (event & SND_SOC_DAPM_PRE_PMD) {
85 /* Disable TAS6424 periodic fault checking/handling */
86 cancel_delayed_work_sync(&tas6424->fault_check_work);
92 static const struct snd_soc_dapm_widget tas6424_dapm_widgets[] = {
93 SND_SOC_DAPM_AIF_IN("DAC IN", "Playback", 0, SND_SOC_NOPM, 0, 0),
94 SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas6424_dac_event,
95 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
96 SND_SOC_DAPM_OUTPUT("OUT")
99 static const struct snd_soc_dapm_route tas6424_audio_map[] = {
100 { "DAC", NULL, "DAC IN" },
101 { "OUT", NULL, "DAC" },
104 static int tas6424_hw_params(struct snd_pcm_substream *substream,
105 struct snd_pcm_hw_params *params,
106 struct snd_soc_dai *dai)
108 struct snd_soc_codec *codec = dai->codec;
109 unsigned int rate = params_rate(params);
110 unsigned int width = params_width(params);
113 dev_dbg(codec->dev, "%s() rate=%u width=%u\n", __func__, rate, width);
117 sap_ctrl |= TAS6424_SAP_RATE_44100;
120 sap_ctrl |= TAS6424_SAP_RATE_48000;
123 sap_ctrl |= TAS6424_SAP_RATE_96000;
126 dev_err(codec->dev, "unsupported sample rate: %u\n", rate);
132 sap_ctrl |= TAS6424_SAP_TDM_SLOT_SZ_16;
137 dev_err(codec->dev, "unsupported sample width: %u\n", width);
141 snd_soc_update_bits(codec, TAS6424_SAP_CTRL,
142 TAS6424_SAP_RATE_MASK |
143 TAS6424_SAP_TDM_SLOT_SZ_16,
149 static int tas6424_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
151 struct snd_soc_codec *codec = dai->codec;
152 u8 serial_format = 0;
154 dev_dbg(codec->dev, "%s() fmt=0x%0x\n", __func__, fmt);
157 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
158 case SND_SOC_DAIFMT_CBS_CFS:
161 dev_err(codec->dev, "Invalid DAI master/slave interface\n");
165 /* signal polarity */
166 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
167 case SND_SOC_DAIFMT_NB_NF:
170 dev_err(codec->dev, "Invalid DAI clock signal polarity\n");
174 /* interface format */
175 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
176 case SND_SOC_DAIFMT_I2S:
177 serial_format |= TAS6424_SAP_I2S;
179 case SND_SOC_DAIFMT_DSP_A:
180 serial_format |= TAS6424_SAP_DSP;
182 case SND_SOC_DAIFMT_DSP_B:
184 * We can use the fact that the TAS6424 does not care about the
185 * LRCLK duty cycle during TDM to receive DSP_B formatted data
186 * in LEFTJ mode (no delaying of the 1st data bit).
188 serial_format |= TAS6424_SAP_LEFTJ;
190 case SND_SOC_DAIFMT_LEFT_J:
191 serial_format |= TAS6424_SAP_LEFTJ;
194 dev_err(codec->dev, "Invalid DAI interface format\n");
198 snd_soc_update_bits(codec, TAS6424_SAP_CTRL,
199 TAS6424_SAP_FMT_MASK, serial_format);
204 static int tas6424_set_dai_tdm_slot(struct snd_soc_dai *dai,
205 unsigned int tx_mask, unsigned int rx_mask,
206 int slots, int slot_width)
208 struct snd_soc_codec *codec = dai->codec;
209 unsigned int first_slot, last_slot;
210 bool sap_tdm_slot_last;
212 dev_dbg(codec->dev, "%s() tx_mask=%d rx_mask=%d\n", __func__,
215 if (!tx_mask || !rx_mask)
216 return 0; /* nothing needed to disable TDM mode */
219 * Determine the first slot and last slot that is being requested so
220 * we'll be able to more easily enforce certain constraints as the
221 * TAS6424's TDM interface is not fully configurable.
223 first_slot = __ffs(tx_mask);
224 last_slot = __fls(rx_mask);
226 if (last_slot - first_slot != 4) {
227 dev_err(codec->dev, "tdm mask must cover 4 contiguous slots\n");
231 switch (first_slot) {
233 sap_tdm_slot_last = false;
236 sap_tdm_slot_last = true;
239 dev_err(codec->dev, "tdm mask must start at slot 0 or 4\n");
243 snd_soc_update_bits(codec, TAS6424_SAP_CTRL, TAS6424_SAP_TDM_SLOT_LAST,
244 sap_tdm_slot_last ? TAS6424_SAP_TDM_SLOT_LAST : 0);
249 static int tas6424_mute(struct snd_soc_dai *dai, int mute)
251 struct snd_soc_codec *codec = dai->codec;
254 dev_dbg(codec->dev, "%s() mute=%d\n", __func__, mute);
257 val = TAS6424_ALL_STATE_MUTE;
259 val = TAS6424_ALL_STATE_PLAY;
261 snd_soc_write(codec, TAS6424_CH_STATE_CTRL, val);
266 static int tas6424_power_off(struct snd_soc_codec *codec)
268 struct tas6424_data *tas6424 = snd_soc_codec_get_drvdata(codec);
271 snd_soc_write(codec, TAS6424_CH_STATE_CTRL, TAS6424_ALL_STATE_HIZ);
273 regcache_cache_only(tas6424->regmap, true);
274 regcache_mark_dirty(tas6424->regmap);
276 ret = regulator_bulk_disable(ARRAY_SIZE(tas6424->supplies),
279 dev_err(codec->dev, "failed to disable supplies: %d\n", ret);
286 static int tas6424_power_on(struct snd_soc_codec *codec)
288 struct tas6424_data *tas6424 = snd_soc_codec_get_drvdata(codec);
291 ret = regulator_bulk_enable(ARRAY_SIZE(tas6424->supplies),
294 dev_err(codec->dev, "failed to enable supplies: %d\n", ret);
298 regcache_cache_only(tas6424->regmap, false);
300 ret = regcache_sync(tas6424->regmap);
302 dev_err(codec->dev, "failed to sync regcache: %d\n", ret);
306 snd_soc_write(codec, TAS6424_CH_STATE_CTRL, TAS6424_ALL_STATE_MUTE);
308 /* any time we come out of HIZ, the output channels automatically run DC
309 * load diagnostics, wait here until this completes
316 static int tas6424_set_bias_level(struct snd_soc_codec *codec,
317 enum snd_soc_bias_level level)
319 dev_dbg(codec->dev, "%s() level=%d\n", __func__, level);
322 case SND_SOC_BIAS_ON:
323 case SND_SOC_BIAS_PREPARE:
325 case SND_SOC_BIAS_STANDBY:
326 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF)
327 tas6424_power_on(codec);
329 case SND_SOC_BIAS_OFF:
330 tas6424_power_off(codec);
337 static struct snd_soc_codec_driver soc_codec_dev_tas6424 = {
338 .set_bias_level = tas6424_set_bias_level,
339 .idle_bias_off = true,
341 .component_driver = {
342 .controls = tas6424_snd_controls,
343 .num_controls = ARRAY_SIZE(tas6424_snd_controls),
344 .dapm_widgets = tas6424_dapm_widgets,
345 .num_dapm_widgets = ARRAY_SIZE(tas6424_dapm_widgets),
346 .dapm_routes = tas6424_audio_map,
347 .num_dapm_routes = ARRAY_SIZE(tas6424_audio_map),
351 static struct snd_soc_dai_ops tas6424_speaker_dai_ops = {
352 .hw_params = tas6424_hw_params,
353 .set_fmt = tas6424_set_dai_fmt,
354 .set_tdm_slot = tas6424_set_dai_tdm_slot,
355 .digital_mute = tas6424_mute,
358 static struct snd_soc_dai_driver tas6424_dai[] = {
360 .name = "tas6424-amplifier",
362 .stream_name = "Playback",
365 .rates = TAS6424_RATES,
366 .formats = TAS6424_FORMATS,
368 .ops = &tas6424_speaker_dai_ops,
372 static void tas6424_fault_check_work(struct work_struct *work)
374 struct tas6424_data *tas6424 = container_of(work, struct tas6424_data,
375 fault_check_work.work);
376 struct device *dev = tas6424->dev;
380 ret = regmap_read(tas6424->regmap, TAS6424_GLOB_FAULT1, ®);
382 dev_err(dev, "failed to read FAULT1 register: %d\n", ret);
387 * Ignore any clock faults as there is no clean way to check for them.
388 * We would need to start checking for those faults *after* the SAIF
389 * stream has been setup, and stop checking *before* the stream is
390 * stopped to avoid any false-positives. However there are no
391 * appropriate hooks to monitor these events.
393 reg &= TAS6424_FAULT_PVDD_OV |
394 TAS6424_FAULT_VBAT_OV |
395 TAS6424_FAULT_PVDD_UV |
396 TAS6424_FAULT_VBAT_UV;
399 goto check_global_fault2_reg;
402 * Only flag errors once for a given occurrence. This is needed as
403 * the TAS6424 will take time clearing the fault condition internally
404 * during which we don't want to bombard the system with the same
405 * error message over and over.
407 if ((reg & TAS6424_FAULT_PVDD_OV) && !(tas6424->last_fault1 & TAS6424_FAULT_PVDD_OV))
408 dev_crit(dev, "experienced a PVDD overvoltage fault\n");
410 if ((reg & TAS6424_FAULT_VBAT_OV) && !(tas6424->last_fault1 & TAS6424_FAULT_VBAT_OV))
411 dev_crit(dev, "experienced a VBAT overvoltage fault\n");
413 if ((reg & TAS6424_FAULT_PVDD_UV) && !(tas6424->last_fault1 & TAS6424_FAULT_PVDD_UV))
414 dev_crit(dev, "experienced a PVDD undervoltage fault\n");
416 if ((reg & TAS6424_FAULT_VBAT_UV) && !(tas6424->last_fault1 & TAS6424_FAULT_VBAT_UV))
417 dev_crit(dev, "experienced a VBAT undervoltage fault\n");
419 /* Store current fault1 value so we can detect any changes next time */
420 tas6424->last_fault1 = reg;
422 check_global_fault2_reg:
423 ret = regmap_read(tas6424->regmap, TAS6424_GLOB_FAULT2, ®);
425 dev_err(dev, "failed to read FAULT2 register: %d\n", ret);
429 reg &= TAS6424_FAULT_OTSD |
430 TAS6424_FAULT_OTSD_CH1 |
431 TAS6424_FAULT_OTSD_CH2 |
432 TAS6424_FAULT_OTSD_CH3 |
433 TAS6424_FAULT_OTSD_CH4;
438 if ((reg & TAS6424_FAULT_OTSD) && !(tas6424->last_fault2 & TAS6424_FAULT_OTSD))
439 dev_crit(dev, "experienced a global overtemp shutdown\n");
441 if ((reg & TAS6424_FAULT_OTSD_CH1) && !(tas6424->last_fault2 & TAS6424_FAULT_OTSD_CH1))
442 dev_crit(dev, "experienced an overtemp shutdown on CH1\n");
444 if ((reg & TAS6424_FAULT_OTSD_CH2) && !(tas6424->last_fault2 & TAS6424_FAULT_OTSD_CH2))
445 dev_crit(dev, "experienced an overtemp shutdown on CH2\n");
447 if ((reg & TAS6424_FAULT_OTSD_CH3) && !(tas6424->last_fault2 & TAS6424_FAULT_OTSD_CH3))
448 dev_crit(dev, "experienced an overtemp shutdown on CH3\n");
450 if ((reg & TAS6424_FAULT_OTSD_CH4) && !(tas6424->last_fault2 & TAS6424_FAULT_OTSD_CH4))
451 dev_crit(dev, "experienced an overtemp shutdown on CH4\n");
453 /* Store current fault2 value so we can detect any changes next time */
454 tas6424->last_fault2 = reg;
457 ret = regmap_read(tas6424->regmap, TAS6424_WARN, ®);
459 dev_err(dev, "failed to read WARN register: %d\n", ret);
463 reg &= TAS6424_WARN_VDD_UV |
464 TAS6424_WARN_VDD_POR |
465 TAS6424_WARN_VDD_OTW |
466 TAS6424_WARN_VDD_OTW_CH1 |
467 TAS6424_WARN_VDD_OTW_CH2 |
468 TAS6424_WARN_VDD_OTW_CH3 |
469 TAS6424_WARN_VDD_OTW_CH4;
474 if ((reg & TAS6424_WARN_VDD_UV) && !(tas6424->last_warn & TAS6424_WARN_VDD_UV))
475 dev_warn(dev, "experienced a VDD under voltage condition\n");
477 if ((reg & TAS6424_WARN_VDD_POR) && !(tas6424->last_warn & TAS6424_WARN_VDD_POR))
478 dev_warn(dev, "experienced a VDD POR condition\n");
480 if ((reg & TAS6424_WARN_VDD_OTW) && !(tas6424->last_warn & TAS6424_WARN_VDD_OTW))
481 dev_warn(dev, "experienced a global overtemp warning\n");
483 if ((reg & TAS6424_WARN_VDD_OTW_CH1) && !(tas6424->last_warn & TAS6424_WARN_VDD_OTW_CH1))
484 dev_warn(dev, "experienced an overtemp warning on CH1\n");
486 if ((reg & TAS6424_WARN_VDD_OTW_CH2) && !(tas6424->last_warn & TAS6424_WARN_VDD_OTW_CH2))
487 dev_warn(dev, "experienced an overtemp warning on CH2\n");
489 if ((reg & TAS6424_WARN_VDD_OTW_CH3) && !(tas6424->last_warn & TAS6424_WARN_VDD_OTW_CH3))
490 dev_warn(dev, "experienced an overtemp warning on CH3\n");
492 if ((reg & TAS6424_WARN_VDD_OTW_CH4) && !(tas6424->last_warn & TAS6424_WARN_VDD_OTW_CH4))
493 dev_warn(dev, "experienced an overtemp warning on CH4\n");
495 /* Store current warn value so we can detect any changes next time */
496 tas6424->last_warn = reg;
498 /* Clear any faults by toggling the CLEAR_FAULT control bit */
499 ret = regmap_write_bits(tas6424->regmap, TAS6424_MISC_CTRL3,
500 TAS6424_CLEAR_FAULT, TAS6424_CLEAR_FAULT);
502 dev_err(dev, "failed to write MISC_CTRL3 register: %d\n", ret);
504 ret = regmap_write_bits(tas6424->regmap, TAS6424_MISC_CTRL3,
505 TAS6424_CLEAR_FAULT, 0);
507 dev_err(dev, "failed to write MISC_CTRL3 register: %d\n", ret);
510 /* Schedule the next fault check at the specified interval */
511 schedule_delayed_work(&tas6424->fault_check_work,
512 msecs_to_jiffies(TAS6424_FAULT_CHECK_INTERVAL));
515 static const struct reg_default tas6424_reg_defaults[] = {
516 { TAS6424_MODE_CTRL, 0x00 },
517 { TAS6424_MISC_CTRL1, 0x32 },
518 { TAS6424_MISC_CTRL2, 0x62 },
519 { TAS6424_SAP_CTRL, 0x04 },
520 { TAS6424_CH_STATE_CTRL, 0x55 },
521 { TAS6424_CH1_VOL_CTRL, 0xcf },
522 { TAS6424_CH2_VOL_CTRL, 0xcf },
523 { TAS6424_CH3_VOL_CTRL, 0xcf },
524 { TAS6424_CH4_VOL_CTRL, 0xcf },
525 { TAS6424_DC_DIAG_CTRL1, 0x00 },
526 { TAS6424_DC_DIAG_CTRL2, 0x11 },
527 { TAS6424_DC_DIAG_CTRL3, 0x11 },
528 { TAS6424_PIN_CTRL, 0xff },
529 { TAS6424_AC_DIAG_CTRL1, 0x00 },
530 { TAS6424_MISC_CTRL3, 0x00 },
531 { TAS6424_CLIP_CTRL, 0x01 },
532 { TAS6424_CLIP_WINDOW, 0x14 },
533 { TAS6424_CLIP_WARN, 0x00 },
534 { TAS6424_CBC_STAT, 0x00 },
535 { TAS6424_MISC_CTRL4, 0x40 },
538 static bool tas6424_is_writable_reg(struct device *dev, unsigned int reg)
541 case TAS6424_MODE_CTRL:
542 case TAS6424_MISC_CTRL1:
543 case TAS6424_MISC_CTRL2:
544 case TAS6424_SAP_CTRL:
545 case TAS6424_CH_STATE_CTRL:
546 case TAS6424_CH1_VOL_CTRL:
547 case TAS6424_CH2_VOL_CTRL:
548 case TAS6424_CH3_VOL_CTRL:
549 case TAS6424_CH4_VOL_CTRL:
550 case TAS6424_DC_DIAG_CTRL1:
551 case TAS6424_DC_DIAG_CTRL2:
552 case TAS6424_DC_DIAG_CTRL3:
553 case TAS6424_PIN_CTRL:
554 case TAS6424_AC_DIAG_CTRL1:
555 case TAS6424_MISC_CTRL3:
556 case TAS6424_CLIP_CTRL:
557 case TAS6424_CLIP_WINDOW:
558 case TAS6424_CLIP_WARN:
559 case TAS6424_CBC_STAT:
560 case TAS6424_MISC_CTRL4:
567 static bool tas6424_is_volatile_reg(struct device *dev, unsigned int reg)
570 case TAS6424_DC_LOAD_DIAG_REP12:
571 case TAS6424_DC_LOAD_DIAG_REP34:
572 case TAS6424_DC_LOAD_DIAG_REPLO:
573 case TAS6424_CHANNEL_STATE:
574 case TAS6424_CHANNEL_FAULT:
575 case TAS6424_GLOB_FAULT1:
576 case TAS6424_GLOB_FAULT2:
578 case TAS6424_AC_LOAD_DIAG_REP1:
579 case TAS6424_AC_LOAD_DIAG_REP2:
580 case TAS6424_AC_LOAD_DIAG_REP3:
581 case TAS6424_AC_LOAD_DIAG_REP4:
588 static const struct regmap_config tas6424_regmap_config = {
592 .writeable_reg = tas6424_is_writable_reg,
593 .volatile_reg = tas6424_is_volatile_reg,
595 .max_register = TAS6424_MAX,
596 .reg_defaults = tas6424_reg_defaults,
597 .num_reg_defaults = ARRAY_SIZE(tas6424_reg_defaults),
598 .cache_type = REGCACHE_RBTREE,
601 #if IS_ENABLED(CONFIG_OF)
602 static const struct of_device_id tas6424_of_ids[] = {
603 { .compatible = "ti,tas6424", },
606 MODULE_DEVICE_TABLE(of, tas6424_of_ids);
609 static int tas6424_i2c_probe(struct i2c_client *client,
610 const struct i2c_device_id *id)
612 struct device *dev = &client->dev;
613 struct tas6424_data *tas6424;
617 tas6424 = devm_kzalloc(dev, sizeof(*tas6424), GFP_KERNEL);
620 dev_set_drvdata(dev, tas6424);
624 tas6424->regmap = devm_regmap_init_i2c(client, &tas6424_regmap_config);
625 if (IS_ERR(tas6424->regmap)) {
626 ret = PTR_ERR(tas6424->regmap);
627 dev_err(dev, "unable to allocate register map: %d\n", ret);
631 for (i = 0; i < ARRAY_SIZE(tas6424->supplies); i++)
632 tas6424->supplies[i].supply = tas6424_supply_names[i];
633 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(tas6424->supplies),
636 dev_err(dev, "unable to request supplies: %d\n", ret);
640 ret = regulator_bulk_enable(ARRAY_SIZE(tas6424->supplies),
643 dev_err(dev, "unable to enable supplies: %d\n", ret);
647 /* Reset device to establish well-defined startup state */
648 ret = regmap_update_bits(tas6424->regmap, TAS6424_MODE_CTRL,
649 TAS6424_RESET, TAS6424_RESET);
651 dev_err(dev, "unable to reset device: %d\n", ret);
655 INIT_DELAYED_WORK(&tas6424->fault_check_work, tas6424_fault_check_work);
657 ret = snd_soc_register_codec(dev, &soc_codec_dev_tas6424,
658 tas6424_dai, ARRAY_SIZE(tas6424_dai));
660 dev_err(dev, "unable to register codec: %d\n", ret);
667 static int tas6424_i2c_remove(struct i2c_client *client)
669 struct device *dev = &client->dev;
670 struct tas6424_data *tas6424 = dev_get_drvdata(dev);
673 snd_soc_unregister_codec(dev);
675 cancel_delayed_work_sync(&tas6424->fault_check_work);
677 ret = regulator_bulk_disable(ARRAY_SIZE(tas6424->supplies),
680 dev_err(dev, "unable to disable supplies: %d\n", ret);
687 static const struct i2c_device_id tas6424_i2c_ids[] = {
691 MODULE_DEVICE_TABLE(i2c, tas6424_i2c_ids);
693 static struct i2c_driver tas6424_i2c_driver = {
696 .of_match_table = of_match_ptr(tas6424_of_ids),
698 .probe = tas6424_i2c_probe,
699 .remove = tas6424_i2c_remove,
700 .id_table = tas6424_i2c_ids,
702 module_i2c_driver(tas6424_i2c_driver);
704 MODULE_AUTHOR("Andreas Dannenberg <dannenberg@ti.com>");
705 MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
706 MODULE_DESCRIPTION("TAS6424 Audio amplifier driver");
707 MODULE_LICENSE("GPL v2");