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10#include <linux/module.h>
11#include <linux/moduleparam.h>
12#include <linux/err.h>
13#include <linux/init.h>
14#include <linux/delay.h>
15#include <linux/pm.h>
16#include <linux/i2c.h>
17#include <linux/gpio.h>
18#include <linux/gpio/consumer.h>
19#include <linux/pm_runtime.h>
20#include <linux/regulator/consumer.h>
21#include <linux/firmware.h>
22#include <linux/regmap.h>
23#include <linux/of.h>
24#include <linux/of_gpio.h>
25#include <linux/slab.h>
26#include <sound/soc.h>
27#include <sound/pcm.h>
28#include <sound/pcm_params.h>
29#include <sound/initval.h>
30#include <sound/tlv.h>
31
32#include "tas2770.h"
33
34#define TAS2770_MDELAY 0xFFFFFFFE
35
36static void tas2770_reset(struct tas2770_priv *tas2770)
37{
38 if (tas2770->reset_gpio) {
39 gpiod_set_value_cansleep(tas2770->reset_gpio, 0);
40 msleep(20);
41 gpiod_set_value_cansleep(tas2770->reset_gpio, 1);
42 }
43 snd_soc_component_write(tas2770->component, TAS2770_SW_RST,
44 TAS2770_RST);
45}
46
47static int tas2770_set_bias_level(struct snd_soc_component *component,
48 enum snd_soc_bias_level level)
49{
50 struct tas2770_priv *tas2770 =
51 snd_soc_component_get_drvdata(component);
52
53 switch (level) {
54 case SND_SOC_BIAS_ON:
55 snd_soc_component_update_bits(component,
56 TAS2770_PWR_CTRL,
57 TAS2770_PWR_CTRL_MASK,
58 TAS2770_PWR_CTRL_ACTIVE);
59 break;
60
61 case SND_SOC_BIAS_OFF:
62 snd_soc_component_update_bits(component,
63 TAS2770_PWR_CTRL,
64 TAS2770_PWR_CTRL_MASK,
65 TAS2770_PWR_CTRL_SHUTDOWN);
66 break;
67
68 default:
69 dev_err(tas2770->dev,
70 "wrong power level setting %d\n", level);
71 return -EINVAL;
72 }
73
74 return 0;
75}
76
77#ifdef CONFIG_PM
78static int tas2770_codec_suspend(struct snd_soc_component *component)
79{
80 int ret;
81
82 ret = snd_soc_component_update_bits(component,
83 TAS2770_PWR_CTRL,
84 TAS2770_PWR_CTRL_MASK,
85 TAS2770_PWR_CTRL_SHUTDOWN);
86
87 if (ret < 0)
88 return ret;
89
90 return 0;
91}
92
93static int tas2770_codec_resume(struct snd_soc_component *component)
94{
95 int ret;
96
97 ret = snd_soc_component_update_bits(component,
98 TAS2770_PWR_CTRL,
99 TAS2770_PWR_CTRL_MASK,
100 TAS2770_PWR_CTRL_ACTIVE);
101
102 if (ret < 0)
103 return ret;
104
105 return 0;
106}
107#else
108#define tas2770_codec_suspend NULL
109#define tas2770_codec_resume NULL
110#endif
111
112static const char * const tas2770_ASI1_src[] = {
113 "I2C offset", "Left", "Right", "LeftRightDiv2",
114};
115
116static SOC_ENUM_SINGLE_DECL(
117 tas2770_ASI1_src_enum, TAS2770_TDM_CFG_REG2,
118 4, tas2770_ASI1_src);
119
120static const struct snd_kcontrol_new tas2770_asi1_mux =
121 SOC_DAPM_ENUM("ASI1 Source", tas2770_ASI1_src_enum);
122
123static int tas2770_dac_event(struct snd_soc_dapm_widget *w,
124 struct snd_kcontrol *kcontrol, int event)
125{
126 struct snd_soc_component *component =
127 snd_soc_dapm_to_component(w->dapm);
128 struct tas2770_priv *tas2770 =
129 snd_soc_component_get_drvdata(component);
130 int ret;
131
132 switch (event) {
133 case SND_SOC_DAPM_POST_PMU:
134 ret = snd_soc_component_update_bits(component,
135 TAS2770_PWR_CTRL,
136 TAS2770_PWR_CTRL_MASK,
137 TAS2770_PWR_CTRL_MUTE);
138 if (ret)
139 goto end;
140 break;
141 case SND_SOC_DAPM_PRE_PMD:
142 ret = snd_soc_component_update_bits(component,
143 TAS2770_PWR_CTRL,
144 TAS2770_PWR_CTRL_MASK,
145 TAS2770_PWR_CTRL_SHUTDOWN);
146 if (ret)
147 goto end;
148 break;
149 default:
150 dev_err(tas2770->dev, "Not supported evevt\n");
151 return -EINVAL;
152 }
153
154end:
155 if (ret < 0)
156 return ret;
157
158 return 0;
159}
160
161static const struct snd_kcontrol_new isense_switch =
162 SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 3, 1, 1);
163static const struct snd_kcontrol_new vsense_switch =
164 SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 2, 1, 1);
165
166static const struct snd_soc_dapm_widget tas2770_dapm_widgets[] = {
167 SND_SOC_DAPM_AIF_IN("ASI1", "ASI1 Playback", 0, SND_SOC_NOPM, 0, 0),
168 SND_SOC_DAPM_MUX("ASI1 Sel", SND_SOC_NOPM, 0, 0,
169 &tas2770_asi1_mux),
170 SND_SOC_DAPM_SWITCH("ISENSE", TAS2770_PWR_CTRL, 3, 1,
171 &isense_switch),
172 SND_SOC_DAPM_SWITCH("VSENSE", TAS2770_PWR_CTRL, 2, 1,
173 &vsense_switch),
174 SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2770_dac_event,
175 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
176 SND_SOC_DAPM_OUTPUT("OUT"),
177 SND_SOC_DAPM_SIGGEN("VMON"),
178 SND_SOC_DAPM_SIGGEN("IMON")
179};
180
181static const struct snd_soc_dapm_route tas2770_audio_map[] = {
182 {"ASI1 Sel", "I2C offset", "ASI1"},
183 {"ASI1 Sel", "Left", "ASI1"},
184 {"ASI1 Sel", "Right", "ASI1"},
185 {"ASI1 Sel", "LeftRightDiv2", "ASI1"},
186 {"DAC", NULL, "ASI1 Sel"},
187 {"OUT", NULL, "DAC"},
188 {"ISENSE", "Switch", "IMON"},
189 {"VSENSE", "Switch", "VMON"},
190};
191
192static int tas2770_mute(struct snd_soc_dai *dai, int mute, int direction)
193{
194 struct snd_soc_component *component = dai->component;
195 int ret;
196
197 if (mute)
198 ret = snd_soc_component_update_bits(component,
199 TAS2770_PWR_CTRL,
200 TAS2770_PWR_CTRL_MASK,
201 TAS2770_PWR_CTRL_MUTE);
202 else
203 ret = snd_soc_component_update_bits(component,
204 TAS2770_PWR_CTRL,
205 TAS2770_PWR_CTRL_MASK,
206 TAS2770_PWR_CTRL_ACTIVE);
207
208 if (ret < 0)
209 return ret;
210
211 return 0;
212}
213
214static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth)
215{
216 int ret;
217 struct snd_soc_component *component = tas2770->component;
218
219 switch (bitwidth) {
220 case SNDRV_PCM_FORMAT_S16_LE:
221 ret = snd_soc_component_update_bits(component,
222 TAS2770_TDM_CFG_REG2,
223 TAS2770_TDM_CFG_REG2_RXW_MASK,
224 TAS2770_TDM_CFG_REG2_RXW_16BITS);
225 tas2770->v_sense_slot = tas2770->i_sense_slot + 2;
226 break;
227 case SNDRV_PCM_FORMAT_S24_LE:
228 ret = snd_soc_component_update_bits(component,
229 TAS2770_TDM_CFG_REG2,
230 TAS2770_TDM_CFG_REG2_RXW_MASK,
231 TAS2770_TDM_CFG_REG2_RXW_24BITS);
232 tas2770->v_sense_slot = tas2770->i_sense_slot + 4;
233 break;
234 case SNDRV_PCM_FORMAT_S32_LE:
235 ret = snd_soc_component_update_bits(component,
236 TAS2770_TDM_CFG_REG2,
237 TAS2770_TDM_CFG_REG2_RXW_MASK,
238 TAS2770_TDM_CFG_REG2_RXW_32BITS);
239 tas2770->v_sense_slot = tas2770->i_sense_slot + 4;
240 break;
241
242 default:
243 return -EINVAL;
244 }
245
246 tas2770->channel_size = bitwidth;
247
248 ret = snd_soc_component_update_bits(component,
249 TAS2770_TDM_CFG_REG5,
250 TAS2770_TDM_CFG_REG5_VSNS_MASK |
251 TAS2770_TDM_CFG_REG5_50_MASK,
252 TAS2770_TDM_CFG_REG5_VSNS_ENABLE |
253 tas2770->v_sense_slot);
254 if (ret)
255 goto end;
256 ret = snd_soc_component_update_bits(component,
257 TAS2770_TDM_CFG_REG6,
258 TAS2770_TDM_CFG_REG6_ISNS_MASK |
259 TAS2770_TDM_CFG_REG6_50_MASK,
260 TAS2770_TDM_CFG_REG6_ISNS_ENABLE |
261 tas2770->i_sense_slot);
262
263end:
264 if (ret < 0)
265 return ret;
266
267 return 0;
268}
269
270static int tas2770_set_samplerate(struct tas2770_priv *tas2770, int samplerate)
271{
272 int ret;
273 struct snd_soc_component *component = tas2770->component;
274
275 switch (samplerate) {
276 case 48000:
277 ret = snd_soc_component_update_bits(component,
278 TAS2770_TDM_CFG_REG0,
279 TAS2770_TDM_CFG_REG0_SMP_MASK,
280 TAS2770_TDM_CFG_REG0_SMP_48KHZ);
281 if (ret)
282 goto end;
283 ret = snd_soc_component_update_bits(component,
284 TAS2770_TDM_CFG_REG0,
285 TAS2770_TDM_CFG_REG0_31_MASK,
286 TAS2770_TDM_CFG_REG0_31_44_1_48KHZ);
287 if (ret)
288 goto end;
289 break;
290 case 44100:
291 ret = snd_soc_component_update_bits(component,
292 TAS2770_TDM_CFG_REG0,
293 TAS2770_TDM_CFG_REG0_SMP_MASK,
294 TAS2770_TDM_CFG_REG0_SMP_44_1KHZ);
295 if (ret)
296 goto end;
297 ret = snd_soc_component_update_bits(component,
298 TAS2770_TDM_CFG_REG0,
299 TAS2770_TDM_CFG_REG0_31_MASK,
300 TAS2770_TDM_CFG_REG0_31_44_1_48KHZ);
301 if (ret)
302 goto end;
303 break;
304 case 96000:
305 ret = snd_soc_component_update_bits(component,
306 TAS2770_TDM_CFG_REG0,
307 TAS2770_TDM_CFG_REG0_SMP_MASK,
308 TAS2770_TDM_CFG_REG0_SMP_48KHZ);
309 if (ret)
310 goto end;
311 ret = snd_soc_component_update_bits(component,
312 TAS2770_TDM_CFG_REG0,
313 TAS2770_TDM_CFG_REG0_31_MASK,
314 TAS2770_TDM_CFG_REG0_31_88_2_96KHZ);
315 break;
316 case 88200:
317 ret = snd_soc_component_update_bits(component,
318 TAS2770_TDM_CFG_REG0,
319 TAS2770_TDM_CFG_REG0_SMP_MASK,
320 TAS2770_TDM_CFG_REG0_SMP_44_1KHZ);
321 if (ret)
322 goto end;
323 ret = snd_soc_component_update_bits(component,
324 TAS2770_TDM_CFG_REG0,
325 TAS2770_TDM_CFG_REG0_31_MASK,
326 TAS2770_TDM_CFG_REG0_31_88_2_96KHZ);
327 break;
328 case 19200:
329 ret = snd_soc_component_update_bits(component,
330 TAS2770_TDM_CFG_REG0,
331 TAS2770_TDM_CFG_REG0_SMP_MASK,
332 TAS2770_TDM_CFG_REG0_SMP_48KHZ);
333 if (ret)
334 goto end;
335 ret = snd_soc_component_update_bits(component,
336 TAS2770_TDM_CFG_REG0,
337 TAS2770_TDM_CFG_REG0_31_MASK,
338 TAS2770_TDM_CFG_REG0_31_176_4_192KHZ);
339 if (ret)
340 goto end;
341 break;
342 case 17640:
343 ret = snd_soc_component_update_bits(component,
344 TAS2770_TDM_CFG_REG0,
345 TAS2770_TDM_CFG_REG0_SMP_MASK,
346 TAS2770_TDM_CFG_REG0_SMP_44_1KHZ);
347 if (ret)
348 goto end;
349 ret = snd_soc_component_update_bits(component,
350 TAS2770_TDM_CFG_REG0,
351 TAS2770_TDM_CFG_REG0_31_MASK,
352 TAS2770_TDM_CFG_REG0_31_176_4_192KHZ);
353 break;
354 default:
355 ret = -EINVAL;
356 }
357
358end:
359 if (ret < 0)
360 return ret;
361
362 tas2770->sampling_rate = samplerate;
363 return 0;
364}
365
366static int tas2770_hw_params(struct snd_pcm_substream *substream,
367 struct snd_pcm_hw_params *params,
368 struct snd_soc_dai *dai)
369{
370 struct snd_soc_component *component = dai->component;
371 struct tas2770_priv *tas2770 =
372 snd_soc_component_get_drvdata(component);
373 int ret;
374
375 ret = tas2770_set_bitwidth(tas2770, params_format(params));
376 if (ret < 0)
377 goto end;
378
379
380 ret = tas2770_set_samplerate(tas2770, params_rate(params));
381
382end:
383 return ret;
384}
385
386static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
387{
388 u8 tdm_rx_start_slot = 0, asi_cfg_1 = 0;
389 int ret;
390 struct snd_soc_component *component = dai->component;
391 struct tas2770_priv *tas2770 =
392 snd_soc_component_get_drvdata(component);
393
394 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
395 case SND_SOC_DAIFMT_CBS_CFS:
396 break;
397 default:
398 dev_err(tas2770->dev, "ASI format master is not found\n");
399 return -EINVAL;
400 }
401
402 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
403 case SND_SOC_DAIFMT_NB_NF:
404 asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_RSING;
405 break;
406 case SND_SOC_DAIFMT_IB_NF:
407 asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_FALING;
408 break;
409 default:
410 dev_err(tas2770->dev, "ASI format Inverse is not found\n");
411 return -EINVAL;
412 }
413
414 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1,
415 TAS2770_TDM_CFG_REG1_RX_MASK,
416 asi_cfg_1);
417 if (ret < 0)
418 return ret;
419
420 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
421 case SND_SOC_DAIFMT_I2S:
422 tdm_rx_start_slot = 1;
423 break;
424 case SND_SOC_DAIFMT_DSP_A:
425 tdm_rx_start_slot = 0;
426 break;
427 case SND_SOC_DAIFMT_DSP_B:
428 tdm_rx_start_slot = 1;
429 break;
430 case SND_SOC_DAIFMT_LEFT_J:
431 tdm_rx_start_slot = 0;
432 break;
433 default:
434 dev_err(tas2770->dev,
435 "DAI Format is not found, fmt=0x%x\n", fmt);
436 return -EINVAL;
437 }
438
439 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1,
440 TAS2770_TDM_CFG_REG1_MASK,
441 (tdm_rx_start_slot << TAS2770_TDM_CFG_REG1_51_SHIFT));
442 if (ret < 0)
443 return ret;
444
445 tas2770->asi_format = fmt;
446
447 return 0;
448}
449
450static int tas2770_set_dai_tdm_slot(struct snd_soc_dai *dai,
451 unsigned int tx_mask,
452 unsigned int rx_mask,
453 int slots, int slot_width)
454{
455 struct snd_soc_component *component = dai->component;
456 struct tas2770_priv *tas2770 =
457 snd_soc_component_get_drvdata(component);
458 int left_slot, right_slot;
459 int ret;
460
461 if (tx_mask == 0 || rx_mask != 0)
462 return -EINVAL;
463
464 if (slots == 1) {
465 if (tx_mask != 1)
466 return -EINVAL;
467 left_slot = 0;
468 right_slot = 0;
469 } else {
470 left_slot = __ffs(tx_mask);
471 tx_mask &= ~(1 << left_slot);
472 if (tx_mask == 0) {
473 right_slot = left_slot;
474 } else {
475 right_slot = __ffs(tx_mask);
476 tx_mask &= ~(1 << right_slot);
477 }
478 }
479
480 if (tx_mask != 0 || left_slot >= slots || right_slot >= slots)
481 return -EINVAL;
482
483 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3,
484 TAS2770_TDM_CFG_REG3_30_MASK,
485 (left_slot << TAS2770_TDM_CFG_REG3_30_SHIFT));
486 if (ret < 0)
487 return ret;
488 ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3,
489 TAS2770_TDM_CFG_REG3_RXS_MASK,
490 (right_slot << TAS2770_TDM_CFG_REG3_RXS_SHIFT));
491 if (ret < 0)
492 return ret;
493
494 switch (slot_width) {
495 case 16:
496 ret = snd_soc_component_update_bits(component,
497 TAS2770_TDM_CFG_REG2,
498 TAS2770_TDM_CFG_REG2_RXS_MASK,
499 TAS2770_TDM_CFG_REG2_RXS_16BITS);
500 break;
501
502 case 24:
503 ret = snd_soc_component_update_bits(component,
504 TAS2770_TDM_CFG_REG2,
505 TAS2770_TDM_CFG_REG2_RXS_MASK,
506 TAS2770_TDM_CFG_REG2_RXS_24BITS);
507 break;
508
509 case 32:
510 ret = snd_soc_component_update_bits(component,
511 TAS2770_TDM_CFG_REG2,
512 TAS2770_TDM_CFG_REG2_RXS_MASK,
513 TAS2770_TDM_CFG_REG2_RXS_32BITS);
514 break;
515
516 case 0:
517
518 ret = 0;
519 break;
520
521 default:
522 ret = -EINVAL;
523 }
524
525 if (ret < 0)
526 return ret;
527
528 tas2770->slot_width = slot_width;
529 return 0;
530}
531
532static struct snd_soc_dai_ops tas2770_dai_ops = {
533 .mute_stream = tas2770_mute,
534 .hw_params = tas2770_hw_params,
535 .set_fmt = tas2770_set_fmt,
536 .set_tdm_slot = tas2770_set_dai_tdm_slot,
537 .no_capture_mute = 1,
538};
539
540#define TAS2770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
541 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
542
543#define TAS2770_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
544 SNDRV_PCM_RATE_96000 |\
545 SNDRV_PCM_RATE_192000\
546 )
547
548static struct snd_soc_dai_driver tas2770_dai_driver[] = {
549 {
550 .name = "tas2770 ASI1",
551 .id = 0,
552 .playback = {
553 .stream_name = "ASI1 Playback",
554 .channels_min = 2,
555 .channels_max = 2,
556 .rates = TAS2770_RATES,
557 .formats = TAS2770_FORMATS,
558 },
559 .capture = {
560 .stream_name = "ASI1 Capture",
561 .channels_min = 0,
562 .channels_max = 2,
563 .rates = TAS2770_RATES,
564 .formats = TAS2770_FORMATS,
565 },
566 .ops = &tas2770_dai_ops,
567 .symmetric_rates = 1,
568 },
569};
570
571static int tas2770_codec_probe(struct snd_soc_component *component)
572{
573 struct tas2770_priv *tas2770 =
574 snd_soc_component_get_drvdata(component);
575
576 tas2770->component = component;
577
578 return 0;
579}
580
581static DECLARE_TLV_DB_SCALE(tas2770_digital_tlv, 1100, 50, 0);
582static DECLARE_TLV_DB_SCALE(tas2770_playback_volume, -12750, 50, 0);
583
584static const struct snd_kcontrol_new tas2770_snd_controls[] = {
585 SOC_SINGLE_TLV("Speaker Playback Volume", TAS2770_PLAY_CFG_REG2,
586 0, TAS2770_PLAY_CFG_REG2_VMAX, 1,
587 tas2770_playback_volume),
588 SOC_SINGLE_TLV("Amp Gain Volume", TAS2770_PLAY_CFG_REG0,
589 0, 0x14, 0,
590 tas2770_digital_tlv),
591};
592
593static const struct snd_soc_component_driver soc_component_driver_tas2770 = {
594 .probe = tas2770_codec_probe,
595 .suspend = tas2770_codec_suspend,
596 .resume = tas2770_codec_resume,
597 .set_bias_level = tas2770_set_bias_level,
598 .controls = tas2770_snd_controls,
599 .num_controls = ARRAY_SIZE(tas2770_snd_controls),
600 .dapm_widgets = tas2770_dapm_widgets,
601 .num_dapm_widgets = ARRAY_SIZE(tas2770_dapm_widgets),
602 .dapm_routes = tas2770_audio_map,
603 .num_dapm_routes = ARRAY_SIZE(tas2770_audio_map),
604 .idle_bias_on = 1,
605 .endianness = 1,
606 .non_legacy_dai_naming = 1,
607};
608
609static int tas2770_register_codec(struct tas2770_priv *tas2770)
610{
611 return devm_snd_soc_register_component(tas2770->dev,
612 &soc_component_driver_tas2770,
613 tas2770_dai_driver, ARRAY_SIZE(tas2770_dai_driver));
614}
615
616static const struct reg_default tas2770_reg_defaults[] = {
617 { TAS2770_PAGE, 0x00 },
618 { TAS2770_SW_RST, 0x00 },
619 { TAS2770_PWR_CTRL, 0x0e },
620 { TAS2770_PLAY_CFG_REG0, 0x10 },
621 { TAS2770_PLAY_CFG_REG1, 0x01 },
622 { TAS2770_PLAY_CFG_REG2, 0x00 },
623 { TAS2770_MSC_CFG_REG0, 0x07 },
624 { TAS2770_TDM_CFG_REG1, 0x02 },
625 { TAS2770_TDM_CFG_REG2, 0x0a },
626 { TAS2770_TDM_CFG_REG3, 0x10 },
627 { TAS2770_INT_MASK_REG0, 0xfc },
628 { TAS2770_INT_MASK_REG1, 0xb1 },
629 { TAS2770_INT_CFG, 0x05 },
630 { TAS2770_MISC_IRQ, 0x81 },
631 { TAS2770_CLK_CGF, 0x0c },
632
633};
634
635static bool tas2770_volatile(struct device *dev, unsigned int reg)
636{
637 switch (reg) {
638 case TAS2770_PAGE:
639 case TAS2770_SW_RST:
640 case TAS2770_BO_PRV_REG0:
641 case TAS2770_LVE_INT_REG0:
642 case TAS2770_LVE_INT_REG1:
643 case TAS2770_LAT_INT_REG0:
644 case TAS2770_LAT_INT_REG1:
645 case TAS2770_VBAT_MSB:
646 case TAS2770_VBAT_LSB:
647 case TAS2770_TEMP_MSB:
648 case TAS2770_TEMP_LSB:
649 return true;
650 }
651 return false;
652}
653
654static bool tas2770_writeable(struct device *dev, unsigned int reg)
655{
656 switch (reg) {
657 case TAS2770_LVE_INT_REG0:
658 case TAS2770_LVE_INT_REG1:
659 case TAS2770_LAT_INT_REG0:
660 case TAS2770_LAT_INT_REG1:
661 case TAS2770_VBAT_MSB:
662 case TAS2770_VBAT_LSB:
663 case TAS2770_TEMP_MSB:
664 case TAS2770_TEMP_LSB:
665 case TAS2770_TDM_CLK_DETC:
666 case TAS2770_REV_AND_GPID:
667 return false;
668 }
669 return true;
670}
671
672static const struct regmap_range_cfg tas2770_regmap_ranges[] = {
673 {
674 .range_min = 0,
675 .range_max = 1 * 128,
676 .selector_reg = TAS2770_PAGE,
677 .selector_mask = 0xff,
678 .selector_shift = 0,
679 .window_start = 0,
680 .window_len = 128,
681 },
682};
683
684static const struct regmap_config tas2770_i2c_regmap = {
685 .reg_bits = 8,
686 .val_bits = 8,
687 .writeable_reg = tas2770_writeable,
688 .volatile_reg = tas2770_volatile,
689 .reg_defaults = tas2770_reg_defaults,
690 .num_reg_defaults = ARRAY_SIZE(tas2770_reg_defaults),
691 .cache_type = REGCACHE_RBTREE,
692 .ranges = tas2770_regmap_ranges,
693 .num_ranges = ARRAY_SIZE(tas2770_regmap_ranges),
694 .max_register = 1 * 128,
695};
696
697static int tas2770_parse_dt(struct device *dev, struct tas2770_priv *tas2770)
698{
699 int rc = 0;
700
701 rc = fwnode_property_read_u32(dev->fwnode, "ti,asi-format",
702 &tas2770->asi_format);
703 if (rc) {
704 dev_err(tas2770->dev, "Looking up %s property failed %d\n",
705 "ti,asi-format", rc);
706 goto end;
707 }
708
709 rc = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no",
710 &tas2770->i_sense_slot);
711 if (rc) {
712 dev_err(tas2770->dev, "Looking up %s property failed %d\n",
713 "ti,imon-slot-no", rc);
714 goto end;
715 }
716
717 rc = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no",
718 &tas2770->v_sense_slot);
719 if (rc) {
720 dev_err(tas2770->dev, "Looking up %s property failed %d\n",
721 "ti,vmon-slot-no", rc);
722 goto end;
723 }
724
725end:
726 return rc;
727}
728
729static int tas2770_i2c_probe(struct i2c_client *client,
730 const struct i2c_device_id *id)
731{
732 struct tas2770_priv *tas2770;
733 int result;
734
735 tas2770 = devm_kzalloc(&client->dev,
736 sizeof(struct tas2770_priv), GFP_KERNEL);
737 if (!tas2770)
738 return -ENOMEM;
739 tas2770->dev = &client->dev;
740
741 i2c_set_clientdata(client, tas2770);
742 dev_set_drvdata(&client->dev, tas2770);
743 tas2770->power_state = TAS2770_POWER_SHUTDOWN;
744
745 tas2770->regmap = devm_regmap_init_i2c(client, &tas2770_i2c_regmap);
746 if (IS_ERR(tas2770->regmap)) {
747 result = PTR_ERR(tas2770->regmap);
748 dev_err(&client->dev, "Failed to allocate register map: %d\n",
749 result);
750 goto end;
751 }
752
753 if (client->dev.of_node) {
754 result = tas2770_parse_dt(&client->dev, tas2770);
755 if (result) {
756 dev_err(tas2770->dev, "%s: Failed to parse devicetree\n",
757 __func__);
758 goto end;
759 }
760 }
761
762 tas2770->reset_gpio = devm_gpiod_get_optional(tas2770->dev, "reset",
763 GPIOD_OUT_HIGH);
764 if (IS_ERR(tas2770->reset_gpio)) {
765 if (PTR_ERR(tas2770->reset_gpio) == -EPROBE_DEFER) {
766 tas2770->reset_gpio = NULL;
767 return -EPROBE_DEFER;
768 }
769 }
770
771 tas2770->channel_size = 0;
772 tas2770->slot_width = 0;
773
774 tas2770_reset(tas2770);
775
776 result = tas2770_register_codec(tas2770);
777 if (result)
778 dev_err(tas2770->dev, "Register codec failed.\n");
779
780end:
781 return result;
782}
783
784static int tas2770_i2c_remove(struct i2c_client *client)
785{
786 pm_runtime_disable(&client->dev);
787 return 0;
788}
789
790
791static const struct i2c_device_id tas2770_i2c_id[] = {
792 { "tas2770", 0},
793 { }
794};
795MODULE_DEVICE_TABLE(i2c, tas2770_i2c_id);
796
797#if defined(CONFIG_OF)
798static const struct of_device_id tas2770_of_match[] = {
799 { .compatible = "ti,tas2770" },
800 {},
801};
802MODULE_DEVICE_TABLE(of, tas2770_of_match);
803#endif
804
805static struct i2c_driver tas2770_i2c_driver = {
806 .driver = {
807 .name = "tas2770",
808 .of_match_table = of_match_ptr(tas2770_of_match),
809 },
810 .probe = tas2770_i2c_probe,
811 .remove = tas2770_i2c_remove,
812 .id_table = tas2770_i2c_id,
813};
814
815module_i2c_driver(tas2770_i2c_driver);
816
817MODULE_AUTHOR("Shi Fu <shifu0704@thundersoft.com>");
818MODULE_DESCRIPTION("TAS2770 I2C Smart Amplifier driver");
819MODULE_LICENSE("GPL v2");
820
