Loading...
Note: File does not exist in v4.17.
1// SPDX-License-Identifier: GPL-2.0
2//
3// Driver for the Texas Instruments TAS2764 CODEC
4// Copyright (C) 2020 Texas Instruments Inc.
5
6#include <linux/module.h>
7#include <linux/moduleparam.h>
8#include <linux/err.h>
9#include <linux/init.h>
10#include <linux/delay.h>
11#include <linux/pm.h>
12#include <linux/i2c.h>
13#include <linux/gpio/consumer.h>
14#include <linux/regulator/consumer.h>
15#include <linux/regmap.h>
16#include <linux/of.h>
17#include <linux/slab.h>
18#include <sound/soc.h>
19#include <sound/pcm.h>
20#include <sound/pcm_params.h>
21#include <sound/initval.h>
22#include <sound/tlv.h>
23
24#include "tas2764.h"
25
26struct tas2764_priv {
27 struct snd_soc_component *component;
28 struct gpio_desc *reset_gpio;
29 struct gpio_desc *sdz_gpio;
30 struct regmap *regmap;
31 struct device *dev;
32 int irq;
33
34 int v_sense_slot;
35 int i_sense_slot;
36
37 bool dac_powered;
38 bool unmuted;
39};
40
41static const char *tas2764_int_ltch0_msgs[8] = {
42 "fault: over temperature", /* INT_LTCH0 & BIT(0) */
43 "fault: over current",
44 "fault: bad TDM clock",
45 "limiter active",
46 "fault: PVDD below limiter inflection point",
47 "fault: limiter max attenuation",
48 "fault: BOP infinite hold",
49 "fault: BOP mute", /* INT_LTCH0 & BIT(7) */
50};
51
52static const unsigned int tas2764_int_readout_regs[6] = {
53 TAS2764_INT_LTCH0,
54 TAS2764_INT_LTCH1,
55 TAS2764_INT_LTCH1_0,
56 TAS2764_INT_LTCH2,
57 TAS2764_INT_LTCH3,
58 TAS2764_INT_LTCH4,
59};
60
61static irqreturn_t tas2764_irq(int irq, void *data)
62{
63 struct tas2764_priv *tas2764 = data;
64 u8 latched[6] = {0, 0, 0, 0, 0, 0};
65 int ret = IRQ_NONE;
66 int i;
67
68 for (i = 0; i < ARRAY_SIZE(latched); i++)
69 latched[i] = snd_soc_component_read(tas2764->component,
70 tas2764_int_readout_regs[i]);
71
72 for (i = 0; i < 8; i++) {
73 if (latched[0] & BIT(i)) {
74 dev_crit_ratelimited(tas2764->dev, "%s\n",
75 tas2764_int_ltch0_msgs[i]);
76 ret = IRQ_HANDLED;
77 }
78 }
79
80 if (latched[0]) {
81 dev_err_ratelimited(tas2764->dev, "other context to the fault: %02x,%02x,%02x,%02x,%02x",
82 latched[1], latched[2], latched[3], latched[4], latched[5]);
83 snd_soc_component_update_bits(tas2764->component,
84 TAS2764_INT_CLK_CFG,
85 TAS2764_INT_CLK_CFG_IRQZ_CLR,
86 TAS2764_INT_CLK_CFG_IRQZ_CLR);
87 }
88
89 return ret;
90}
91
92static void tas2764_reset(struct tas2764_priv *tas2764)
93{
94 if (tas2764->reset_gpio) {
95 gpiod_set_value_cansleep(tas2764->reset_gpio, 0);
96 msleep(20);
97 gpiod_set_value_cansleep(tas2764->reset_gpio, 1);
98 usleep_range(1000, 2000);
99 }
100
101 snd_soc_component_write(tas2764->component, TAS2764_SW_RST,
102 TAS2764_RST);
103 usleep_range(1000, 2000);
104}
105
106static int tas2764_update_pwr_ctrl(struct tas2764_priv *tas2764)
107{
108 struct snd_soc_component *component = tas2764->component;
109 unsigned int val;
110 int ret;
111
112 if (tas2764->dac_powered)
113 val = tas2764->unmuted ?
114 TAS2764_PWR_CTRL_ACTIVE : TAS2764_PWR_CTRL_MUTE;
115 else
116 val = TAS2764_PWR_CTRL_SHUTDOWN;
117
118 ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
119 TAS2764_PWR_CTRL_MASK, val);
120 if (ret < 0)
121 return ret;
122
123 return 0;
124}
125
126#ifdef CONFIG_PM
127static int tas2764_codec_suspend(struct snd_soc_component *component)
128{
129 struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
130 int ret;
131
132 ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
133 TAS2764_PWR_CTRL_MASK,
134 TAS2764_PWR_CTRL_SHUTDOWN);
135
136 if (ret < 0)
137 return ret;
138
139 if (tas2764->sdz_gpio)
140 gpiod_set_value_cansleep(tas2764->sdz_gpio, 0);
141
142 regcache_cache_only(tas2764->regmap, true);
143 regcache_mark_dirty(tas2764->regmap);
144
145 return 0;
146}
147
148static int tas2764_codec_resume(struct snd_soc_component *component)
149{
150 struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
151 int ret;
152
153 if (tas2764->sdz_gpio) {
154 gpiod_set_value_cansleep(tas2764->sdz_gpio, 1);
155 usleep_range(1000, 2000);
156 }
157
158 ret = tas2764_update_pwr_ctrl(tas2764);
159
160 if (ret < 0)
161 return ret;
162
163 regcache_cache_only(tas2764->regmap, false);
164
165 return regcache_sync(tas2764->regmap);
166}
167#else
168#define tas2764_codec_suspend NULL
169#define tas2764_codec_resume NULL
170#endif
171
172static const char * const tas2764_ASI1_src[] = {
173 "I2C offset", "Left", "Right", "LeftRightDiv2",
174};
175
176static SOC_ENUM_SINGLE_DECL(
177 tas2764_ASI1_src_enum, TAS2764_TDM_CFG2, TAS2764_TDM_CFG2_SCFG_SHIFT,
178 tas2764_ASI1_src);
179
180static const struct snd_kcontrol_new tas2764_asi1_mux =
181 SOC_DAPM_ENUM("ASI1 Source", tas2764_ASI1_src_enum);
182
183static int tas2764_dac_event(struct snd_soc_dapm_widget *w,
184 struct snd_kcontrol *kcontrol, int event)
185{
186 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
187 struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
188 int ret;
189
190 switch (event) {
191 case SND_SOC_DAPM_POST_PMU:
192 tas2764->dac_powered = true;
193 ret = tas2764_update_pwr_ctrl(tas2764);
194 break;
195 case SND_SOC_DAPM_PRE_PMD:
196 tas2764->dac_powered = false;
197 ret = tas2764_update_pwr_ctrl(tas2764);
198 break;
199 default:
200 dev_err(tas2764->dev, "Unsupported event\n");
201 return -EINVAL;
202 }
203
204 if (ret < 0)
205 return ret;
206
207 return 0;
208}
209
210static const struct snd_kcontrol_new isense_switch =
211 SOC_DAPM_SINGLE("Switch", TAS2764_PWR_CTRL, TAS2764_ISENSE_POWER_EN, 1, 1);
212static const struct snd_kcontrol_new vsense_switch =
213 SOC_DAPM_SINGLE("Switch", TAS2764_PWR_CTRL, TAS2764_VSENSE_POWER_EN, 1, 1);
214
215static const struct snd_soc_dapm_widget tas2764_dapm_widgets[] = {
216 SND_SOC_DAPM_AIF_IN("ASI1", "ASI1 Playback", 0, SND_SOC_NOPM, 0, 0),
217 SND_SOC_DAPM_MUX("ASI1 Sel", SND_SOC_NOPM, 0, 0, &tas2764_asi1_mux),
218 SND_SOC_DAPM_SWITCH("ISENSE", TAS2764_PWR_CTRL, TAS2764_ISENSE_POWER_EN,
219 1, &isense_switch),
220 SND_SOC_DAPM_SWITCH("VSENSE", TAS2764_PWR_CTRL, TAS2764_VSENSE_POWER_EN,
221 1, &vsense_switch),
222 SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2764_dac_event,
223 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
224 SND_SOC_DAPM_OUTPUT("OUT"),
225 SND_SOC_DAPM_SIGGEN("VMON"),
226 SND_SOC_DAPM_SIGGEN("IMON")
227};
228
229static const struct snd_soc_dapm_route tas2764_audio_map[] = {
230 {"ASI1 Sel", "I2C offset", "ASI1"},
231 {"ASI1 Sel", "Left", "ASI1"},
232 {"ASI1 Sel", "Right", "ASI1"},
233 {"ASI1 Sel", "LeftRightDiv2", "ASI1"},
234 {"DAC", NULL, "ASI1 Sel"},
235 {"OUT", NULL, "DAC"},
236 {"ISENSE", "Switch", "IMON"},
237 {"VSENSE", "Switch", "VMON"},
238};
239
240static int tas2764_mute(struct snd_soc_dai *dai, int mute, int direction)
241{
242 struct tas2764_priv *tas2764 =
243 snd_soc_component_get_drvdata(dai->component);
244
245 tas2764->unmuted = !mute;
246 return tas2764_update_pwr_ctrl(tas2764);
247}
248
249static int tas2764_set_bitwidth(struct tas2764_priv *tas2764, int bitwidth)
250{
251 struct snd_soc_component *component = tas2764->component;
252 int sense_en;
253 int val;
254 int ret;
255
256 switch (bitwidth) {
257 case SNDRV_PCM_FORMAT_S16_LE:
258 ret = snd_soc_component_update_bits(component,
259 TAS2764_TDM_CFG2,
260 TAS2764_TDM_CFG2_RXW_MASK,
261 TAS2764_TDM_CFG2_RXW_16BITS);
262 break;
263 case SNDRV_PCM_FORMAT_S24_LE:
264 ret = snd_soc_component_update_bits(component,
265 TAS2764_TDM_CFG2,
266 TAS2764_TDM_CFG2_RXW_MASK,
267 TAS2764_TDM_CFG2_RXW_24BITS);
268 break;
269 case SNDRV_PCM_FORMAT_S32_LE:
270 ret = snd_soc_component_update_bits(component,
271 TAS2764_TDM_CFG2,
272 TAS2764_TDM_CFG2_RXW_MASK,
273 TAS2764_TDM_CFG2_RXW_32BITS);
274 break;
275
276 default:
277 return -EINVAL;
278 }
279
280 if (ret < 0)
281 return ret;
282
283 val = snd_soc_component_read(tas2764->component, TAS2764_PWR_CTRL);
284 if (val < 0)
285 return val;
286
287 if (val & (1 << TAS2764_VSENSE_POWER_EN))
288 sense_en = 0;
289 else
290 sense_en = TAS2764_TDM_CFG5_VSNS_ENABLE;
291
292 ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG5,
293 TAS2764_TDM_CFG5_VSNS_ENABLE,
294 sense_en);
295 if (ret < 0)
296 return ret;
297
298 if (val & (1 << TAS2764_ISENSE_POWER_EN))
299 sense_en = 0;
300 else
301 sense_en = TAS2764_TDM_CFG6_ISNS_ENABLE;
302
303 ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG6,
304 TAS2764_TDM_CFG6_ISNS_ENABLE,
305 sense_en);
306 if (ret < 0)
307 return ret;
308
309 return 0;
310}
311
312static int tas2764_set_samplerate(struct tas2764_priv *tas2764, int samplerate)
313{
314 struct snd_soc_component *component = tas2764->component;
315 int ramp_rate_val;
316 int ret;
317
318 switch (samplerate) {
319 case 48000:
320 ramp_rate_val = TAS2764_TDM_CFG0_SMP_48KHZ |
321 TAS2764_TDM_CFG0_44_1_48KHZ;
322 break;
323 case 44100:
324 ramp_rate_val = TAS2764_TDM_CFG0_SMP_44_1KHZ |
325 TAS2764_TDM_CFG0_44_1_48KHZ;
326 break;
327 case 96000:
328 ramp_rate_val = TAS2764_TDM_CFG0_SMP_48KHZ |
329 TAS2764_TDM_CFG0_88_2_96KHZ;
330 break;
331 case 88200:
332 ramp_rate_val = TAS2764_TDM_CFG0_SMP_44_1KHZ |
333 TAS2764_TDM_CFG0_88_2_96KHZ;
334 break;
335 default:
336 return -EINVAL;
337 }
338
339 ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG0,
340 TAS2764_TDM_CFG0_SMP_MASK |
341 TAS2764_TDM_CFG0_MASK,
342 ramp_rate_val);
343 if (ret < 0)
344 return ret;
345
346 return 0;
347}
348
349static int tas2764_hw_params(struct snd_pcm_substream *substream,
350 struct snd_pcm_hw_params *params,
351 struct snd_soc_dai *dai)
352{
353 struct snd_soc_component *component = dai->component;
354 struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
355 int ret;
356
357 ret = tas2764_set_bitwidth(tas2764, params_format(params));
358 if (ret < 0)
359 return ret;
360
361 return tas2764_set_samplerate(tas2764, params_rate(params));
362}
363
364static int tas2764_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
365{
366 struct snd_soc_component *component = dai->component;
367 struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
368 u8 tdm_rx_start_slot = 0, asi_cfg_0 = 0, asi_cfg_1 = 0;
369 int ret;
370
371 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
372 case SND_SOC_DAIFMT_NB_IF:
373 asi_cfg_0 ^= TAS2764_TDM_CFG0_FRAME_START;
374 fallthrough;
375 case SND_SOC_DAIFMT_NB_NF:
376 asi_cfg_1 = TAS2764_TDM_CFG1_RX_RISING;
377 break;
378 case SND_SOC_DAIFMT_IB_IF:
379 asi_cfg_0 ^= TAS2764_TDM_CFG0_FRAME_START;
380 fallthrough;
381 case SND_SOC_DAIFMT_IB_NF:
382 asi_cfg_1 = TAS2764_TDM_CFG1_RX_FALLING;
383 break;
384 }
385
386 ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG1,
387 TAS2764_TDM_CFG1_RX_MASK,
388 asi_cfg_1);
389 if (ret < 0)
390 return ret;
391
392 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
393 case SND_SOC_DAIFMT_I2S:
394 asi_cfg_0 ^= TAS2764_TDM_CFG0_FRAME_START;
395 fallthrough;
396 case SND_SOC_DAIFMT_DSP_A:
397 tdm_rx_start_slot = 1;
398 break;
399 case SND_SOC_DAIFMT_DSP_B:
400 case SND_SOC_DAIFMT_LEFT_J:
401 tdm_rx_start_slot = 0;
402 break;
403 default:
404 dev_err(tas2764->dev,
405 "DAI Format is not found, fmt=0x%x\n", fmt);
406 return -EINVAL;
407 }
408
409 ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG0,
410 TAS2764_TDM_CFG0_FRAME_START,
411 asi_cfg_0);
412 if (ret < 0)
413 return ret;
414
415 ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG1,
416 TAS2764_TDM_CFG1_MASK,
417 (tdm_rx_start_slot << TAS2764_TDM_CFG1_51_SHIFT));
418 if (ret < 0)
419 return ret;
420
421 return 0;
422}
423
424static int tas2764_set_dai_tdm_slot(struct snd_soc_dai *dai,
425 unsigned int tx_mask,
426 unsigned int rx_mask,
427 int slots, int slot_width)
428{
429 struct snd_soc_component *component = dai->component;
430 struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
431 int left_slot, right_slot;
432 int slots_cfg;
433 int slot_size;
434 int ret;
435
436 if (tx_mask == 0 || rx_mask != 0)
437 return -EINVAL;
438
439 left_slot = __ffs(tx_mask);
440 tx_mask &= ~(1 << left_slot);
441 if (tx_mask == 0) {
442 right_slot = left_slot;
443 } else {
444 right_slot = __ffs(tx_mask);
445 tx_mask &= ~(1 << right_slot);
446 }
447
448 if (tx_mask != 0 || left_slot >= slots || right_slot >= slots)
449 return -EINVAL;
450
451 slots_cfg = (right_slot << TAS2764_TDM_CFG3_RXS_SHIFT) | left_slot;
452
453 ret = snd_soc_component_write(component, TAS2764_TDM_CFG3, slots_cfg);
454 if (ret)
455 return ret;
456
457 switch (slot_width) {
458 case 16:
459 slot_size = TAS2764_TDM_CFG2_RXS_16BITS;
460 break;
461 case 24:
462 slot_size = TAS2764_TDM_CFG2_RXS_24BITS;
463 break;
464 case 32:
465 slot_size = TAS2764_TDM_CFG2_RXS_32BITS;
466 break;
467 default:
468 return -EINVAL;
469 }
470
471 ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG2,
472 TAS2764_TDM_CFG2_RXS_MASK,
473 slot_size);
474 if (ret < 0)
475 return ret;
476
477 ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG5,
478 TAS2764_TDM_CFG5_50_MASK,
479 tas2764->v_sense_slot);
480 if (ret < 0)
481 return ret;
482
483 ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG6,
484 TAS2764_TDM_CFG6_50_MASK,
485 tas2764->i_sense_slot);
486 if (ret < 0)
487 return ret;
488
489 return 0;
490}
491
492static const struct snd_soc_dai_ops tas2764_dai_ops = {
493 .mute_stream = tas2764_mute,
494 .hw_params = tas2764_hw_params,
495 .set_fmt = tas2764_set_fmt,
496 .set_tdm_slot = tas2764_set_dai_tdm_slot,
497 .no_capture_mute = 1,
498};
499
500#define TAS2764_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
501 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
502
503#define TAS2764_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
504 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_88200)
505
506static struct snd_soc_dai_driver tas2764_dai_driver[] = {
507 {
508 .name = "tas2764 ASI1",
509 .id = 0,
510 .playback = {
511 .stream_name = "ASI1 Playback",
512 .channels_min = 1,
513 .channels_max = 2,
514 .rates = TAS2764_RATES,
515 .formats = TAS2764_FORMATS,
516 },
517 .capture = {
518 .stream_name = "ASI1 Capture",
519 .channels_min = 0,
520 .channels_max = 2,
521 .rates = TAS2764_RATES,
522 .formats = TAS2764_FORMATS,
523 },
524 .ops = &tas2764_dai_ops,
525 .symmetric_rate = 1,
526 },
527};
528
529static int tas2764_codec_probe(struct snd_soc_component *component)
530{
531 struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
532 int ret;
533
534 tas2764->component = component;
535
536 if (tas2764->sdz_gpio) {
537 gpiod_set_value_cansleep(tas2764->sdz_gpio, 1);
538 usleep_range(1000, 2000);
539 }
540
541 tas2764_reset(tas2764);
542
543 if (tas2764->irq) {
544 ret = snd_soc_component_write(tas2764->component, TAS2764_INT_MASK0, 0xff);
545 if (ret < 0)
546 return ret;
547
548 ret = snd_soc_component_write(tas2764->component, TAS2764_INT_MASK1, 0xff);
549 if (ret < 0)
550 return ret;
551
552 ret = snd_soc_component_write(tas2764->component, TAS2764_INT_MASK2, 0xff);
553 if (ret < 0)
554 return ret;
555
556 ret = snd_soc_component_write(tas2764->component, TAS2764_INT_MASK3, 0xff);
557 if (ret < 0)
558 return ret;
559
560 ret = snd_soc_component_write(tas2764->component, TAS2764_INT_MASK4, 0xff);
561 if (ret < 0)
562 return ret;
563
564 ret = devm_request_threaded_irq(tas2764->dev, tas2764->irq, NULL, tas2764_irq,
565 IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_LOW,
566 "tas2764", tas2764);
567 if (ret)
568 dev_warn(tas2764->dev, "failed to request IRQ: %d\n", ret);
569 }
570
571 ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG5,
572 TAS2764_TDM_CFG5_VSNS_ENABLE, 0);
573 if (ret < 0)
574 return ret;
575
576 ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG6,
577 TAS2764_TDM_CFG6_ISNS_ENABLE, 0);
578 if (ret < 0)
579 return ret;
580
581 return 0;
582}
583
584static DECLARE_TLV_DB_SCALE(tas2764_digital_tlv, 1100, 50, 0);
585static DECLARE_TLV_DB_SCALE(tas2764_playback_volume, -10050, 50, 1);
586
587static const char * const tas2764_hpf_texts[] = {
588 "Disabled", "2 Hz", "50 Hz", "100 Hz", "200 Hz",
589 "400 Hz", "800 Hz"
590};
591
592static SOC_ENUM_SINGLE_DECL(
593 tas2764_hpf_enum, TAS2764_DC_BLK0,
594 TAS2764_DC_BLK0_HPF_FREQ_PB_SHIFT, tas2764_hpf_texts);
595
596static const struct snd_kcontrol_new tas2764_snd_controls[] = {
597 SOC_SINGLE_TLV("Speaker Volume", TAS2764_DVC, 0,
598 TAS2764_DVC_MAX, 1, tas2764_playback_volume),
599 SOC_SINGLE_TLV("Amp Gain Volume", TAS2764_CHNL_0, 1, 0x14, 0,
600 tas2764_digital_tlv),
601 SOC_ENUM("HPF Corner Frequency", tas2764_hpf_enum),
602};
603
604static const struct snd_soc_component_driver soc_component_driver_tas2764 = {
605 .probe = tas2764_codec_probe,
606 .suspend = tas2764_codec_suspend,
607 .resume = tas2764_codec_resume,
608 .controls = tas2764_snd_controls,
609 .num_controls = ARRAY_SIZE(tas2764_snd_controls),
610 .dapm_widgets = tas2764_dapm_widgets,
611 .num_dapm_widgets = ARRAY_SIZE(tas2764_dapm_widgets),
612 .dapm_routes = tas2764_audio_map,
613 .num_dapm_routes = ARRAY_SIZE(tas2764_audio_map),
614 .idle_bias_on = 1,
615 .endianness = 1,
616};
617
618static const struct reg_default tas2764_reg_defaults[] = {
619 { TAS2764_PAGE, 0x00 },
620 { TAS2764_SW_RST, 0x00 },
621 { TAS2764_PWR_CTRL, 0x1a },
622 { TAS2764_DVC, 0x00 },
623 { TAS2764_CHNL_0, 0x28 },
624 { TAS2764_TDM_CFG0, 0x09 },
625 { TAS2764_TDM_CFG1, 0x02 },
626 { TAS2764_TDM_CFG2, 0x0a },
627 { TAS2764_TDM_CFG3, 0x10 },
628 { TAS2764_TDM_CFG5, 0x42 },
629};
630
631static const struct regmap_range_cfg tas2764_regmap_ranges[] = {
632 {
633 .range_min = 0,
634 .range_max = 1 * 128,
635 .selector_reg = TAS2764_PAGE,
636 .selector_mask = 0xff,
637 .selector_shift = 0,
638 .window_start = 0,
639 .window_len = 128,
640 },
641};
642
643static bool tas2764_volatile_register(struct device *dev, unsigned int reg)
644{
645 switch (reg) {
646 case TAS2764_INT_LTCH0 ... TAS2764_INT_LTCH4:
647 case TAS2764_INT_CLK_CFG:
648 return true;
649 default:
650 return false;
651 }
652}
653
654static const struct regmap_config tas2764_i2c_regmap = {
655 .reg_bits = 8,
656 .val_bits = 8,
657 .volatile_reg = tas2764_volatile_register,
658 .reg_defaults = tas2764_reg_defaults,
659 .num_reg_defaults = ARRAY_SIZE(tas2764_reg_defaults),
660 .cache_type = REGCACHE_RBTREE,
661 .ranges = tas2764_regmap_ranges,
662 .num_ranges = ARRAY_SIZE(tas2764_regmap_ranges),
663 .max_register = 1 * 128,
664};
665
666static int tas2764_parse_dt(struct device *dev, struct tas2764_priv *tas2764)
667{
668 int ret = 0;
669
670 tas2764->reset_gpio = devm_gpiod_get_optional(tas2764->dev, "reset",
671 GPIOD_OUT_HIGH);
672 if (IS_ERR(tas2764->reset_gpio)) {
673 if (PTR_ERR(tas2764->reset_gpio) == -EPROBE_DEFER) {
674 tas2764->reset_gpio = NULL;
675 return -EPROBE_DEFER;
676 }
677 }
678
679 tas2764->sdz_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH);
680 if (IS_ERR(tas2764->sdz_gpio)) {
681 if (PTR_ERR(tas2764->sdz_gpio) == -EPROBE_DEFER)
682 return -EPROBE_DEFER;
683
684 tas2764->sdz_gpio = NULL;
685 }
686
687 ret = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no",
688 &tas2764->i_sense_slot);
689 if (ret)
690 tas2764->i_sense_slot = 0;
691
692 ret = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no",
693 &tas2764->v_sense_slot);
694 if (ret)
695 tas2764->v_sense_slot = 2;
696
697 return 0;
698}
699
700static int tas2764_i2c_probe(struct i2c_client *client)
701{
702 struct tas2764_priv *tas2764;
703 int result;
704
705 tas2764 = devm_kzalloc(&client->dev, sizeof(struct tas2764_priv),
706 GFP_KERNEL);
707 if (!tas2764)
708 return -ENOMEM;
709
710 tas2764->dev = &client->dev;
711 tas2764->irq = client->irq;
712 i2c_set_clientdata(client, tas2764);
713 dev_set_drvdata(&client->dev, tas2764);
714
715 tas2764->regmap = devm_regmap_init_i2c(client, &tas2764_i2c_regmap);
716 if (IS_ERR(tas2764->regmap)) {
717 result = PTR_ERR(tas2764->regmap);
718 dev_err(&client->dev, "Failed to allocate register map: %d\n",
719 result);
720 return result;
721 }
722
723 if (client->dev.of_node) {
724 result = tas2764_parse_dt(&client->dev, tas2764);
725 if (result) {
726 dev_err(tas2764->dev, "%s: Failed to parse devicetree\n",
727 __func__);
728 return result;
729 }
730 }
731
732 return devm_snd_soc_register_component(tas2764->dev,
733 &soc_component_driver_tas2764,
734 tas2764_dai_driver,
735 ARRAY_SIZE(tas2764_dai_driver));
736}
737
738static const struct i2c_device_id tas2764_i2c_id[] = {
739 { "tas2764"},
740 { }
741};
742MODULE_DEVICE_TABLE(i2c, tas2764_i2c_id);
743
744#if defined(CONFIG_OF)
745static const struct of_device_id tas2764_of_match[] = {
746 { .compatible = "ti,tas2764" },
747 {},
748};
749MODULE_DEVICE_TABLE(of, tas2764_of_match);
750#endif
751
752static struct i2c_driver tas2764_i2c_driver = {
753 .driver = {
754 .name = "tas2764",
755 .of_match_table = of_match_ptr(tas2764_of_match),
756 },
757 .probe = tas2764_i2c_probe,
758 .id_table = tas2764_i2c_id,
759};
760module_i2c_driver(tas2764_i2c_driver);
761
762MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
763MODULE_DESCRIPTION("TAS2764 I2C Smart Amplifier driver");
764MODULE_LICENSE("GPL v2");