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18#include <linux/module.h>
19#include <linux/errno.h>
20#include <linux/device.h>
21#include <linux/i2c.h>
22#include <linux/gpio.h>
23#include <linux/of_gpio.h>
24#include <linux/pm_runtime.h>
25#include <linux/regmap.h>
26#include <linux/slab.h>
27
28#include <linux/gpio/consumer.h>
29#include <linux/regulator/consumer.h>
30
31#include <sound/pcm.h>
32#include <sound/pcm_params.h>
33#include <sound/soc.h>
34#include <sound/soc-dapm.h>
35#include <sound/tlv.h>
36#include <sound/tas2552-plat.h>
37#include <dt-bindings/sound/tas2552.h>
38
39#include "tas2552.h"
40
41static const struct reg_default tas2552_reg_defs[] = {
42 {TAS2552_CFG_1, 0x22},
43 {TAS2552_CFG_3, 0x80},
44 {TAS2552_DOUT, 0x00},
45 {TAS2552_OUTPUT_DATA, 0xc0},
46 {TAS2552_PDM_CFG, 0x01},
47 {TAS2552_PGA_GAIN, 0x00},
48 {TAS2552_BOOST_APT_CTRL, 0x0f},
49 {TAS2552_RESERVED_0D, 0xbe},
50 {TAS2552_LIMIT_RATE_HYS, 0x08},
51 {TAS2552_CFG_2, 0xef},
52 {TAS2552_SER_CTRL_1, 0x00},
53 {TAS2552_SER_CTRL_2, 0x00},
54 {TAS2552_PLL_CTRL_1, 0x10},
55 {TAS2552_PLL_CTRL_2, 0x00},
56 {TAS2552_PLL_CTRL_3, 0x00},
57 {TAS2552_BTIP, 0x8f},
58 {TAS2552_BTS_CTRL, 0x80},
59 {TAS2552_LIMIT_RELEASE, 0x04},
60 {TAS2552_LIMIT_INT_COUNT, 0x00},
61 {TAS2552_EDGE_RATE_CTRL, 0x40},
62 {TAS2552_VBAT_DATA, 0x00},
63};
64
65#define TAS2552_NUM_SUPPLIES 3
66static const char *tas2552_supply_names[TAS2552_NUM_SUPPLIES] = {
67 "vbat",
68 "iovdd",
69 "avdd",
70};
71
72struct tas2552_data {
73 struct snd_soc_codec *codec;
74 struct regmap *regmap;
75 struct i2c_client *tas2552_client;
76 struct regulator_bulk_data supplies[TAS2552_NUM_SUPPLIES];
77 struct gpio_desc *enable_gpio;
78 unsigned char regs[TAS2552_VBAT_DATA];
79 unsigned int pll_clkin;
80 int pll_clk_id;
81 unsigned int pdm_clk;
82 int pdm_clk_id;
83
84 unsigned int dai_fmt;
85 unsigned int tdm_delay;
86};
87
88static int tas2552_post_event(struct snd_soc_dapm_widget *w,
89 struct snd_kcontrol *kcontrol, int event)
90{
91 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
92
93 switch (event) {
94 case SND_SOC_DAPM_POST_PMU:
95 snd_soc_write(codec, TAS2552_RESERVED_0D, 0xc0);
96 snd_soc_update_bits(codec, TAS2552_LIMIT_RATE_HYS, (1 << 5),
97 (1 << 5));
98 snd_soc_update_bits(codec, TAS2552_CFG_2, 1, 0);
99 snd_soc_update_bits(codec, TAS2552_CFG_1, TAS2552_SWS, 0);
100 break;
101 case SND_SOC_DAPM_POST_PMD:
102 snd_soc_update_bits(codec, TAS2552_CFG_1, TAS2552_SWS,
103 TAS2552_SWS);
104 snd_soc_update_bits(codec, TAS2552_CFG_2, 1, 1);
105 snd_soc_update_bits(codec, TAS2552_LIMIT_RATE_HYS, (1 << 5), 0);
106 snd_soc_write(codec, TAS2552_RESERVED_0D, 0xbe);
107 break;
108 }
109 return 0;
110}
111
112
113static const char * const tas2552_input_texts[] = {
114 "Digital", "Analog" };
115static SOC_ENUM_SINGLE_DECL(tas2552_input_mux_enum, TAS2552_CFG_3, 7,
116 tas2552_input_texts);
117
118static const struct snd_kcontrol_new tas2552_input_mux_control =
119 SOC_DAPM_ENUM("Route", tas2552_input_mux_enum);
120
121static const struct snd_soc_dapm_widget tas2552_dapm_widgets[] =
122{
123 SND_SOC_DAPM_INPUT("IN"),
124
125
126 SND_SOC_DAPM_MUX("Input selection", SND_SOC_NOPM, 0, 0,
127 &tas2552_input_mux_control),
128
129 SND_SOC_DAPM_AIF_IN("DAC IN", "DAC Playback", 0, SND_SOC_NOPM, 0, 0),
130 SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
131 SND_SOC_DAPM_OUT_DRV("ClassD", TAS2552_CFG_2, 7, 0, NULL, 0),
132 SND_SOC_DAPM_SUPPLY("PLL", TAS2552_CFG_2, 3, 0, NULL, 0),
133 SND_SOC_DAPM_POST("Post Event", tas2552_post_event),
134
135 SND_SOC_DAPM_OUTPUT("OUT")
136};
137
138static const struct snd_soc_dapm_route tas2552_audio_map[] = {
139 {"DAC", NULL, "DAC IN"},
140 {"Input selection", "Digital", "DAC"},
141 {"Input selection", "Analog", "IN"},
142 {"ClassD", NULL, "Input selection"},
143 {"OUT", NULL, "ClassD"},
144 {"ClassD", NULL, "PLL"},
145};
146
147#ifdef CONFIG_PM
148static void tas2552_sw_shutdown(struct tas2552_data *tas2552, int sw_shutdown)
149{
150 u8 cfg1_reg = 0;
151
152 if (!tas2552->codec)
153 return;
154
155 if (sw_shutdown)
156 cfg1_reg = TAS2552_SWS;
157
158 snd_soc_update_bits(tas2552->codec, TAS2552_CFG_1, TAS2552_SWS,
159 cfg1_reg);
160}
161#endif
162
163static int tas2552_setup_pll(struct snd_soc_codec *codec,
164 struct snd_pcm_hw_params *params)
165{
166 struct tas2552_data *tas2552 = dev_get_drvdata(codec->dev);
167 bool bypass_pll = false;
168 unsigned int pll_clk = params_rate(params) * 512;
169 unsigned int pll_clkin = tas2552->pll_clkin;
170 u8 pll_enable;
171
172 if (!pll_clkin) {
173 if (tas2552->pll_clk_id != TAS2552_PLL_CLKIN_BCLK)
174 return -EINVAL;
175
176 pll_clkin = snd_soc_params_to_bclk(params);
177 pll_clkin += tas2552->tdm_delay;
178 }
179
180 pll_enable = snd_soc_read(codec, TAS2552_CFG_2) & TAS2552_PLL_ENABLE;
181 snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0);
182
183 if (pll_clkin == pll_clk)
184 bypass_pll = true;
185
186 if (bypass_pll) {
187
188 snd_soc_update_bits(codec, TAS2552_PLL_CTRL_2,
189 TAS2552_PLL_BYPASS, TAS2552_PLL_BYPASS);
190 } else {
191
192
193
194
195 unsigned int d;
196 u8 j;
197 u8 pll_sel = (tas2552->pll_clk_id << 3) & TAS2552_PLL_SRC_MASK;
198 u8 p = snd_soc_read(codec, TAS2552_PLL_CTRL_1);
199
200 p = (p >> 7);
201
202recalc:
203 j = (pll_clk * 2 * (1 << p)) / pll_clkin;
204 d = (pll_clk * 2 * (1 << p)) % pll_clkin;
205 d /= (pll_clkin / 10000);
206
207 if (d && (pll_clkin < 512000 || pll_clkin > 9200000)) {
208 if (tas2552->pll_clk_id == TAS2552_PLL_CLKIN_BCLK) {
209 pll_clkin = 1800000;
210 pll_sel = (TAS2552_PLL_CLKIN_1_8_FIXED << 3) &
211 TAS2552_PLL_SRC_MASK;
212 } else {
213 pll_clkin = snd_soc_params_to_bclk(params);
214 pll_clkin += tas2552->tdm_delay;
215 pll_sel = (TAS2552_PLL_CLKIN_BCLK << 3) &
216 TAS2552_PLL_SRC_MASK;
217 }
218 goto recalc;
219 }
220
221 snd_soc_update_bits(codec, TAS2552_CFG_1, TAS2552_PLL_SRC_MASK,
222 pll_sel);
223
224 snd_soc_update_bits(codec, TAS2552_PLL_CTRL_1,
225 TAS2552_PLL_J_MASK, j);
226
227 snd_soc_write(codec, TAS2552_PLL_CTRL_2,
228 TAS2552_PLL_D_UPPER(d));
229 snd_soc_write(codec, TAS2552_PLL_CTRL_3,
230 TAS2552_PLL_D_LOWER(d));
231 }
232
233
234 snd_soc_update_bits(codec, TAS2552_CFG_2, TAS2552_PLL_ENABLE,
235 pll_enable);
236
237 return 0;
238}
239
240static int tas2552_hw_params(struct snd_pcm_substream *substream,
241 struct snd_pcm_hw_params *params,
242 struct snd_soc_dai *dai)
243{
244 struct snd_soc_codec *codec = dai->codec;
245 struct tas2552_data *tas2552 = dev_get_drvdata(codec->dev);
246 int cpf;
247 u8 ser_ctrl1_reg, wclk_rate;
248
249 switch (params_width(params)) {
250 case 16:
251 ser_ctrl1_reg = TAS2552_WORDLENGTH_16BIT;
252 cpf = 32 + tas2552->tdm_delay;
253 break;
254 case 20:
255 ser_ctrl1_reg = TAS2552_WORDLENGTH_20BIT;
256 cpf = 64 + tas2552->tdm_delay;
257 break;
258 case 24:
259 ser_ctrl1_reg = TAS2552_WORDLENGTH_24BIT;
260 cpf = 64 + tas2552->tdm_delay;
261 break;
262 case 32:
263 ser_ctrl1_reg = TAS2552_WORDLENGTH_32BIT;
264 cpf = 64 + tas2552->tdm_delay;
265 break;
266 default:
267 dev_err(codec->dev, "Not supported sample size: %d\n",
268 params_width(params));
269 return -EINVAL;
270 }
271
272 if (cpf <= 32)
273 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_32;
274 else if (cpf <= 64)
275 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_64;
276 else if (cpf <= 128)
277 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_128;
278 else
279 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_256;
280
281 snd_soc_update_bits(codec, TAS2552_SER_CTRL_1,
282 TAS2552_WORDLENGTH_MASK | TAS2552_CLKSPERFRAME_MASK,
283 ser_ctrl1_reg);
284
285 switch (params_rate(params)) {
286 case 8000:
287 wclk_rate = TAS2552_WCLK_FREQ_8KHZ;
288 break;
289 case 11025:
290 case 12000:
291 wclk_rate = TAS2552_WCLK_FREQ_11_12KHZ;
292 break;
293 case 16000:
294 wclk_rate = TAS2552_WCLK_FREQ_16KHZ;
295 break;
296 case 22050:
297 case 24000:
298 wclk_rate = TAS2552_WCLK_FREQ_22_24KHZ;
299 break;
300 case 32000:
301 wclk_rate = TAS2552_WCLK_FREQ_32KHZ;
302 break;
303 case 44100:
304 case 48000:
305 wclk_rate = TAS2552_WCLK_FREQ_44_48KHZ;
306 break;
307 case 88200:
308 case 96000:
309 wclk_rate = TAS2552_WCLK_FREQ_88_96KHZ;
310 break;
311 case 176400:
312 case 192000:
313 wclk_rate = TAS2552_WCLK_FREQ_176_192KHZ;
314 break;
315 default:
316 dev_err(codec->dev, "Not supported sample rate: %d\n",
317 params_rate(params));
318 return -EINVAL;
319 }
320
321 snd_soc_update_bits(codec, TAS2552_CFG_3, TAS2552_WCLK_FREQ_MASK,
322 wclk_rate);
323
324 return tas2552_setup_pll(codec, params);
325}
326
327#define TAS2552_DAI_FMT_MASK (TAS2552_BCLKDIR | \
328 TAS2552_WCLKDIR | \
329 TAS2552_DATAFORMAT_MASK)
330static int tas2552_prepare(struct snd_pcm_substream *substream,
331 struct snd_soc_dai *dai)
332{
333 struct snd_soc_codec *codec = dai->codec;
334 struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
335 int delay = 0;
336
337
338 if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_A)
339 delay += (tas2552->tdm_delay + 1);
340 else if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_B)
341 delay += tas2552->tdm_delay;
342
343
344 snd_soc_write(codec, TAS2552_SER_CTRL_2, delay);
345
346 return 0;
347}
348
349static int tas2552_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
350{
351 struct snd_soc_codec *codec = dai->codec;
352 struct tas2552_data *tas2552 = dev_get_drvdata(codec->dev);
353 u8 serial_format;
354
355 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
356 case SND_SOC_DAIFMT_CBS_CFS:
357 serial_format = 0x00;
358 break;
359 case SND_SOC_DAIFMT_CBS_CFM:
360 serial_format = TAS2552_WCLKDIR;
361 break;
362 case SND_SOC_DAIFMT_CBM_CFS:
363 serial_format = TAS2552_BCLKDIR;
364 break;
365 case SND_SOC_DAIFMT_CBM_CFM:
366 serial_format = (TAS2552_BCLKDIR | TAS2552_WCLKDIR);
367 break;
368 default:
369 dev_vdbg(codec->dev, "DAI Format master is not found\n");
370 return -EINVAL;
371 }
372
373 switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK |
374 SND_SOC_DAIFMT_INV_MASK)) {
375 case (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF):
376 break;
377 case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF):
378 case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF):
379 serial_format |= TAS2552_DATAFORMAT_DSP;
380 break;
381 case (SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_NB_NF):
382 serial_format |= TAS2552_DATAFORMAT_RIGHT_J;
383 break;
384 case (SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF):
385 serial_format |= TAS2552_DATAFORMAT_LEFT_J;
386 break;
387 default:
388 dev_vdbg(codec->dev, "DAI Format is not found\n");
389 return -EINVAL;
390 }
391 tas2552->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
392
393 snd_soc_update_bits(codec, TAS2552_SER_CTRL_1, TAS2552_DAI_FMT_MASK,
394 serial_format);
395 return 0;
396}
397
398static int tas2552_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
399 unsigned int freq, int dir)
400{
401 struct snd_soc_codec *codec = dai->codec;
402 struct tas2552_data *tas2552 = dev_get_drvdata(codec->dev);
403 u8 reg, mask, val;
404
405 switch (clk_id) {
406 case TAS2552_PLL_CLKIN_MCLK:
407 case TAS2552_PLL_CLKIN_IVCLKIN:
408 if (freq < 512000 || freq > 24576000) {
409
410 dev_warn(codec->dev, "Out of range PLL_CLKIN: %u\n",
411 freq);
412 clk_id = TAS2552_PLL_CLKIN_BCLK;
413 freq = 0;
414 }
415
416 case TAS2552_PLL_CLKIN_BCLK:
417 case TAS2552_PLL_CLKIN_1_8_FIXED:
418 mask = TAS2552_PLL_SRC_MASK;
419 val = (clk_id << 3) & mask;
420 reg = TAS2552_CFG_1;
421 tas2552->pll_clk_id = clk_id;
422 tas2552->pll_clkin = freq;
423 break;
424 case TAS2552_PDM_CLK_PLL:
425 case TAS2552_PDM_CLK_IVCLKIN:
426 case TAS2552_PDM_CLK_BCLK:
427 case TAS2552_PDM_CLK_MCLK:
428 mask = TAS2552_PDM_CLK_SEL_MASK;
429 val = (clk_id >> 1) & mask;
430 reg = TAS2552_PDM_CFG;
431 tas2552->pdm_clk_id = clk_id;
432 tas2552->pdm_clk = freq;
433 break;
434 default:
435 dev_err(codec->dev, "Invalid clk id: %d\n", clk_id);
436 return -EINVAL;
437 }
438
439 snd_soc_update_bits(codec, reg, mask, val);
440
441 return 0;
442}
443
444static int tas2552_set_dai_tdm_slot(struct snd_soc_dai *dai,
445 unsigned int tx_mask, unsigned int rx_mask,
446 int slots, int slot_width)
447{
448 struct snd_soc_codec *codec = dai->codec;
449 struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
450 unsigned int lsb;
451
452 if (unlikely(!tx_mask)) {
453 dev_err(codec->dev, "tx masks need to be non 0\n");
454 return -EINVAL;
455 }
456
457
458 lsb = __ffs(tx_mask);
459 if ((lsb + 1) != __fls(tx_mask)) {
460 dev_err(codec->dev, "Invalid mask, slots must be adjacent\n");
461 return -EINVAL;
462 }
463
464 tas2552->tdm_delay = lsb * slot_width;
465
466
467 snd_soc_update_bits(codec, TAS2552_DOUT,
468 TAS2552_SDOUT_TRISTATE, TAS2552_SDOUT_TRISTATE);
469
470 return 0;
471}
472
473static int tas2552_mute(struct snd_soc_dai *dai, int mute)
474{
475 u8 cfg1_reg = 0;
476 struct snd_soc_codec *codec = dai->codec;
477
478 if (mute)
479 cfg1_reg |= TAS2552_MUTE;
480
481 snd_soc_update_bits(codec, TAS2552_CFG_1, TAS2552_MUTE, cfg1_reg);
482
483 return 0;
484}
485
486#ifdef CONFIG_PM
487static int tas2552_runtime_suspend(struct device *dev)
488{
489 struct tas2552_data *tas2552 = dev_get_drvdata(dev);
490
491 tas2552_sw_shutdown(tas2552, 1);
492
493 regcache_cache_only(tas2552->regmap, true);
494 regcache_mark_dirty(tas2552->regmap);
495
496 gpiod_set_value(tas2552->enable_gpio, 0);
497
498 return 0;
499}
500
501static int tas2552_runtime_resume(struct device *dev)
502{
503 struct tas2552_data *tas2552 = dev_get_drvdata(dev);
504
505 gpiod_set_value(tas2552->enable_gpio, 1);
506
507 tas2552_sw_shutdown(tas2552, 0);
508
509 regcache_cache_only(tas2552->regmap, false);
510 regcache_sync(tas2552->regmap);
511
512 return 0;
513}
514#endif
515
516static const struct dev_pm_ops tas2552_pm = {
517 SET_RUNTIME_PM_OPS(tas2552_runtime_suspend, tas2552_runtime_resume,
518 NULL)
519};
520
521static const struct snd_soc_dai_ops tas2552_speaker_dai_ops = {
522 .hw_params = tas2552_hw_params,
523 .prepare = tas2552_prepare,
524 .set_sysclk = tas2552_set_dai_sysclk,
525 .set_fmt = tas2552_set_dai_fmt,
526 .set_tdm_slot = tas2552_set_dai_tdm_slot,
527 .digital_mute = tas2552_mute,
528};
529
530
531#define TAS2552_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
532 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
533
534
535static struct snd_soc_dai_driver tas2552_dai[] = {
536 {
537 .name = "tas2552-amplifier",
538 .playback = {
539 .stream_name = "Playback",
540 .channels_min = 2,
541 .channels_max = 2,
542 .rates = SNDRV_PCM_RATE_8000_192000,
543 .formats = TAS2552_FORMATS,
544 },
545 .ops = &tas2552_speaker_dai_ops,
546 },
547};
548
549
550
551
552static DECLARE_TLV_DB_SCALE(dac_tlv, -700, 100, 0);
553
554static const char * const tas2552_din_source_select[] = {
555 "Muted",
556 "Left",
557 "Right",
558 "Left + Right average",
559};
560static SOC_ENUM_SINGLE_DECL(tas2552_din_source_enum,
561 TAS2552_CFG_3, 3,
562 tas2552_din_source_select);
563
564static const struct snd_kcontrol_new tas2552_snd_controls[] = {
565 SOC_SINGLE_TLV("Speaker Driver Playback Volume",
566 TAS2552_PGA_GAIN, 0, 0x1f, 0, dac_tlv),
567 SOC_ENUM("DIN source", tas2552_din_source_enum),
568};
569
570static int tas2552_codec_probe(struct snd_soc_codec *codec)
571{
572 struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
573 int ret;
574
575 tas2552->codec = codec;
576
577 ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
578 tas2552->supplies);
579
580 if (ret != 0) {
581 dev_err(codec->dev, "Failed to enable supplies: %d\n",
582 ret);
583 return ret;
584 }
585
586 gpiod_set_value(tas2552->enable_gpio, 1);
587
588 ret = pm_runtime_get_sync(codec->dev);
589 if (ret < 0) {
590 dev_err(codec->dev, "Enabling device failed: %d\n",
591 ret);
592 goto probe_fail;
593 }
594
595 snd_soc_update_bits(codec, TAS2552_CFG_1, TAS2552_MUTE, TAS2552_MUTE);
596 snd_soc_write(codec, TAS2552_CFG_3, TAS2552_I2S_OUT_SEL |
597 TAS2552_DIN_SRC_SEL_AVG_L_R);
598 snd_soc_write(codec, TAS2552_OUTPUT_DATA,
599 TAS2552_PDM_DATA_SEL_V_I |
600 TAS2552_R_DATA_OUT(TAS2552_DATA_OUT_V_DATA));
601 snd_soc_write(codec, TAS2552_BOOST_APT_CTRL, TAS2552_APT_DELAY_200 |
602 TAS2552_APT_THRESH_20_17);
603
604 snd_soc_write(codec, TAS2552_CFG_2, TAS2552_BOOST_EN | TAS2552_APT_EN |
605 TAS2552_LIM_EN);
606
607 return 0;
608
609probe_fail:
610 gpiod_set_value(tas2552->enable_gpio, 0);
611
612 regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
613 tas2552->supplies);
614 return -EIO;
615}
616
617static int tas2552_codec_remove(struct snd_soc_codec *codec)
618{
619 struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
620
621 pm_runtime_put(codec->dev);
622
623 gpiod_set_value(tas2552->enable_gpio, 0);
624
625 return 0;
626};
627
628#ifdef CONFIG_PM
629static int tas2552_suspend(struct snd_soc_codec *codec)
630{
631 struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
632 int ret;
633
634 ret = regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
635 tas2552->supplies);
636
637 if (ret != 0)
638 dev_err(codec->dev, "Failed to disable supplies: %d\n",
639 ret);
640 return 0;
641}
642
643static int tas2552_resume(struct snd_soc_codec *codec)
644{
645 struct tas2552_data *tas2552 = snd_soc_codec_get_drvdata(codec);
646 int ret;
647
648 ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
649 tas2552->supplies);
650
651 if (ret != 0) {
652 dev_err(codec->dev, "Failed to enable supplies: %d\n",
653 ret);
654 }
655
656 return 0;
657}
658#else
659#define tas2552_suspend NULL
660#define tas2552_resume NULL
661#endif
662
663static struct snd_soc_codec_driver soc_codec_dev_tas2552 = {
664 .probe = tas2552_codec_probe,
665 .remove = tas2552_codec_remove,
666 .suspend = tas2552_suspend,
667 .resume = tas2552_resume,
668 .ignore_pmdown_time = true,
669
670 .controls = tas2552_snd_controls,
671 .num_controls = ARRAY_SIZE(tas2552_snd_controls),
672 .dapm_widgets = tas2552_dapm_widgets,
673 .num_dapm_widgets = ARRAY_SIZE(tas2552_dapm_widgets),
674 .dapm_routes = tas2552_audio_map,
675 .num_dapm_routes = ARRAY_SIZE(tas2552_audio_map),
676};
677
678static const struct regmap_config tas2552_regmap_config = {
679 .reg_bits = 8,
680 .val_bits = 8,
681
682 .max_register = TAS2552_MAX_REG,
683 .reg_defaults = tas2552_reg_defs,
684 .num_reg_defaults = ARRAY_SIZE(tas2552_reg_defs),
685 .cache_type = REGCACHE_RBTREE,
686};
687
688static int tas2552_probe(struct i2c_client *client,
689 const struct i2c_device_id *id)
690{
691 struct device *dev;
692 struct tas2552_data *data;
693 int ret;
694 int i;
695
696 dev = &client->dev;
697 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
698 if (data == NULL)
699 return -ENOMEM;
700
701 data->enable_gpio = devm_gpiod_get_optional(dev, "enable",
702 GPIOD_OUT_LOW);
703 if (IS_ERR(data->enable_gpio))
704 return PTR_ERR(data->enable_gpio);
705
706 data->tas2552_client = client;
707 data->regmap = devm_regmap_init_i2c(client, &tas2552_regmap_config);
708 if (IS_ERR(data->regmap)) {
709 ret = PTR_ERR(data->regmap);
710 dev_err(&client->dev, "Failed to allocate register map: %d\n",
711 ret);
712 return ret;
713 }
714
715 for (i = 0; i < ARRAY_SIZE(data->supplies); i++)
716 data->supplies[i].supply = tas2552_supply_names[i];
717
718 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies),
719 data->supplies);
720 if (ret != 0) {
721 dev_err(dev, "Failed to request supplies: %d\n", ret);
722 return ret;
723 }
724
725 pm_runtime_set_active(&client->dev);
726 pm_runtime_set_autosuspend_delay(&client->dev, 1000);
727 pm_runtime_use_autosuspend(&client->dev);
728 pm_runtime_enable(&client->dev);
729 pm_runtime_mark_last_busy(&client->dev);
730 pm_runtime_put_sync_autosuspend(&client->dev);
731
732 dev_set_drvdata(&client->dev, data);
733
734 ret = snd_soc_register_codec(&client->dev,
735 &soc_codec_dev_tas2552,
736 tas2552_dai, ARRAY_SIZE(tas2552_dai));
737 if (ret < 0)
738 dev_err(&client->dev, "Failed to register codec: %d\n", ret);
739
740 return ret;
741}
742
743static int tas2552_i2c_remove(struct i2c_client *client)
744{
745 snd_soc_unregister_codec(&client->dev);
746 pm_runtime_disable(&client->dev);
747 return 0;
748}
749
750static const struct i2c_device_id tas2552_id[] = {
751 { "tas2552", 0 },
752 { }
753};
754MODULE_DEVICE_TABLE(i2c, tas2552_id);
755
756#if IS_ENABLED(CONFIG_OF)
757static const struct of_device_id tas2552_of_match[] = {
758 { .compatible = "ti,tas2552", },
759 {},
760};
761MODULE_DEVICE_TABLE(of, tas2552_of_match);
762#endif
763
764static struct i2c_driver tas2552_i2c_driver = {
765 .driver = {
766 .name = "tas2552",
767 .of_match_table = of_match_ptr(tas2552_of_match),
768 .pm = &tas2552_pm,
769 },
770 .probe = tas2552_probe,
771 .remove = tas2552_i2c_remove,
772 .id_table = tas2552_id,
773};
774
775module_i2c_driver(tas2552_i2c_driver);
776
777MODULE_AUTHOR("Dan Muprhy <dmurphy@ti.com>");
778MODULE_DESCRIPTION("TAS2552 Audio amplifier driver");
779MODULE_LICENSE("GPL");
780
