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10#include <linux/module.h>
11#include <linux/moduleparam.h>
12#include <linux/init.h>
13#include <linux/delay.h>
14#include <linux/pm.h>
15#include <linux/i2c.h>
16#include <linux/interrupt.h>
17#include <linux/gpio.h>
18#include <linux/regulator/consumer.h>
19#include <linux/slab.h>
20#include <sound/core.h>
21#include <sound/pcm.h>
22#include <sound/pcm_params.h>
23#include <sound/soc.h>
24#include <sound/initval.h>
25#include <sound/tlv.h>
26
27#include <sound/tlv320dac33-plat.h>
28#include "tlv320dac33.h"
29
30
31
32
33
34
35
36#define DAC33_FIFO_SIZE_16BIT 6144
37#define DAC33_FIFO_SIZE_24BIT 4096
38#define DAC33_MODE7_MARGIN 10
39
40#define BURST_BASEFREQ_HZ 49152000
41
42#define SAMPLES_TO_US(rate, samples) \
43 (1000000000 / (((rate) * 1000) / (samples)))
44
45#define US_TO_SAMPLES(rate, us) \
46 ((rate) / (1000000 / ((us) < 1000000 ? (us) : 1000000)))
47
48#define UTHR_FROM_PERIOD_SIZE(samples, playrate, burstrate) \
49 (((samples)*5000) / (((burstrate)*5000) / ((burstrate) - (playrate))))
50
51static void dac33_calculate_times(struct snd_pcm_substream *substream,
52 struct snd_soc_component *component);
53static int dac33_prepare_chip(struct snd_pcm_substream *substream,
54 struct snd_soc_component *component);
55
56enum dac33_state {
57 DAC33_IDLE = 0,
58 DAC33_PREFILL,
59 DAC33_PLAYBACK,
60 DAC33_FLUSH,
61};
62
63enum dac33_fifo_modes {
64 DAC33_FIFO_BYPASS = 0,
65 DAC33_FIFO_MODE1,
66 DAC33_FIFO_MODE7,
67 DAC33_FIFO_LAST_MODE,
68};
69
70#define DAC33_NUM_SUPPLIES 3
71static const char *dac33_supply_names[DAC33_NUM_SUPPLIES] = {
72 "AVDD",
73 "DVDD",
74 "IOVDD",
75};
76
77struct tlv320dac33_priv {
78 struct mutex mutex;
79 struct work_struct work;
80 struct snd_soc_component *component;
81 struct regulator_bulk_data supplies[DAC33_NUM_SUPPLIES];
82 struct snd_pcm_substream *substream;
83 int power_gpio;
84 int chip_power;
85 int irq;
86 unsigned int refclk;
87
88 unsigned int alarm_threshold;
89 enum dac33_fifo_modes fifo_mode;
90 unsigned int fifo_size;
91 unsigned int nsample;
92 int mode1_latency;
93
94 u8 burst_bclkdiv;
95 u8 *reg_cache;
96 unsigned int burst_rate;
97
98 int keep_bclk;
99
100 spinlock_t lock;
101 unsigned long long t_stamp1;
102 unsigned long long t_stamp2;
103
104 unsigned int mode1_us_burst;
105
106 unsigned int mode7_us_to_lthr;
107
108 unsigned int uthr;
109
110 enum dac33_state state;
111 struct i2c_client *i2c;
112};
113
114static const u8 dac33_reg[DAC33_CACHEREGNUM] = {
1150x00, 0x00, 0x00, 0x00,
1160x00, 0x00, 0x00, 0x00,
1170x00, 0x00, 0x00, 0x00,
1180x00, 0x00, 0x00, 0x00,
1190x00, 0x00, 0x00, 0x00,
1200x00, 0x00, 0x00, 0x00,
1210x00, 0x00, 0x00, 0x00,
1220x00, 0x00, 0x00, 0x00,
1230x00, 0x00, 0x00, 0x00,
1240x00, 0x00, 0x00, 0x00,
1250x00, 0x00, 0x00, 0x00,
1260x00, 0x00, 0x00, 0x80,
1270x80, 0x00, 0x00, 0x00,
1280x00, 0x00, 0x00, 0x00,
1290x00, 0x00,
130
131 0x00, 0x00,
1320x00, 0x00, 0x00, 0x00,
133
1340x00, 0x00, 0x00, 0x00,
1350x00, 0x80,
136
137 0x80, 0x80,
138
1390x80, 0x00, 0x00,
140
141 0x00,
1420x00, 0x00, 0x00, 0x00,
1430x00, 0x00, 0x00, 0x00,
1440x00, 0x00, 0x00, 0x00,
1450x00, 0x00, 0x00, 0x00,
1460x00, 0x00, 0x00, 0x00,
1470x00, 0x00, 0x00, 0x00,
1480x00, 0x00, 0x00, 0x00,
1490x00, 0x00, 0x00, 0x00,
1500x00, 0x00, 0x00, 0x00,
1510x00, 0x00, 0x00, 0x00,
1520x00, 0x00, 0x00, 0x00,
1530x00, 0x00, 0x00, 0x00,
1540x00,
155
156 0xda, 0x33, 0x03,
157};
158
159
160static inline unsigned int dac33_read_reg_cache(struct snd_soc_component *component,
161 unsigned reg)
162{
163 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
164 u8 *cache = dac33->reg_cache;
165 if (reg >= DAC33_CACHEREGNUM)
166 return 0;
167
168 return cache[reg];
169}
170
171static inline void dac33_write_reg_cache(struct snd_soc_component *component,
172 u8 reg, u8 value)
173{
174 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
175 u8 *cache = dac33->reg_cache;
176 if (reg >= DAC33_CACHEREGNUM)
177 return;
178
179 cache[reg] = value;
180}
181
182static int dac33_read(struct snd_soc_component *component, unsigned int reg,
183 u8 *value)
184{
185 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
186 int val, ret = 0;
187
188 *value = reg & 0xff;
189
190
191 if (dac33->chip_power) {
192 val = i2c_smbus_read_byte_data(dac33->i2c, value[0]);
193 if (val < 0) {
194 dev_err(component->dev, "Read failed (%d)\n", val);
195 value[0] = dac33_read_reg_cache(component, reg);
196 ret = val;
197 } else {
198 value[0] = val;
199 dac33_write_reg_cache(component, reg, val);
200 }
201 } else {
202 value[0] = dac33_read_reg_cache(component, reg);
203 }
204
205 return ret;
206}
207
208static int dac33_write(struct snd_soc_component *component, unsigned int reg,
209 unsigned int value)
210{
211 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
212 u8 data[2];
213 int ret = 0;
214
215
216
217
218
219
220 data[0] = reg & 0xff;
221 data[1] = value & 0xff;
222
223 dac33_write_reg_cache(component, data[0], data[1]);
224 if (dac33->chip_power) {
225 ret = i2c_master_send(dac33->i2c, data, 2);
226 if (ret != 2)
227 dev_err(component->dev, "Write failed (%d)\n", ret);
228 else
229 ret = 0;
230 }
231
232 return ret;
233}
234
235static int dac33_write_locked(struct snd_soc_component *component, unsigned int reg,
236 unsigned int value)
237{
238 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
239 int ret;
240
241 mutex_lock(&dac33->mutex);
242 ret = dac33_write(component, reg, value);
243 mutex_unlock(&dac33->mutex);
244
245 return ret;
246}
247
248#define DAC33_I2C_ADDR_AUTOINC 0x80
249static int dac33_write16(struct snd_soc_component *component, unsigned int reg,
250 unsigned int value)
251{
252 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
253 u8 data[3];
254 int ret = 0;
255
256
257
258
259
260
261
262 data[0] = reg & 0xff;
263 data[1] = (value >> 8) & 0xff;
264 data[2] = value & 0xff;
265
266 dac33_write_reg_cache(component, data[0], data[1]);
267 dac33_write_reg_cache(component, data[0] + 1, data[2]);
268
269 if (dac33->chip_power) {
270
271 data[0] |= DAC33_I2C_ADDR_AUTOINC;
272 ret = i2c_master_send(dac33->i2c, data, 3);
273 if (ret != 3)
274 dev_err(component->dev, "Write failed (%d)\n", ret);
275 else
276 ret = 0;
277 }
278
279 return ret;
280}
281
282static void dac33_init_chip(struct snd_soc_component *component)
283{
284 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
285
286 if (unlikely(!dac33->chip_power))
287 return;
288
289
290 dac33_write(component, DAC33_DAC_CTRL_A, DAC33_DACRATE(0));
291
292 dac33_write(component, DAC33_DAC_CTRL_B, DAC33_DACSRCR_RIGHT |
293 DAC33_DACSRCL_LEFT);
294
295 dac33_write(component, DAC33_DAC_CTRL_C, 0x00);
296
297
298
299 dac33_write(component, DAC33_ANA_VOL_SOFT_STEP_CTRL, DAC33_VOLCLKEN);
300
301
302 dac33_write(component, DAC33_LDAC_DIG_VOL_CTRL,
303 dac33_read_reg_cache(component, DAC33_LDAC_DIG_VOL_CTRL));
304 dac33_write(component, DAC33_RDAC_DIG_VOL_CTRL,
305 dac33_read_reg_cache(component, DAC33_RDAC_DIG_VOL_CTRL));
306
307 dac33_write(component, DAC33_LINEL_TO_LLO_VOL,
308 dac33_read_reg_cache(component, DAC33_LINEL_TO_LLO_VOL));
309 dac33_write(component, DAC33_LINER_TO_RLO_VOL,
310 dac33_read_reg_cache(component, DAC33_LINER_TO_RLO_VOL));
311
312 dac33_write(component, DAC33_OUT_AMP_CTRL,
313 dac33_read_reg_cache(component, DAC33_OUT_AMP_CTRL));
314
315 dac33_write(component, DAC33_LDAC_PWR_CTRL,
316 dac33_read_reg_cache(component, DAC33_LDAC_PWR_CTRL));
317 dac33_write(component, DAC33_RDAC_PWR_CTRL,
318 dac33_read_reg_cache(component, DAC33_RDAC_PWR_CTRL));
319}
320
321static inline int dac33_read_id(struct snd_soc_component *component)
322{
323 int i, ret = 0;
324 u8 reg;
325
326 for (i = 0; i < 3; i++) {
327 ret = dac33_read(component, DAC33_DEVICE_ID_MSB + i, ®);
328 if (ret < 0)
329 break;
330 }
331
332 return ret;
333}
334
335static inline void dac33_soft_power(struct snd_soc_component *component, int power)
336{
337 u8 reg;
338
339 reg = dac33_read_reg_cache(component, DAC33_PWR_CTRL);
340 if (power)
341 reg |= DAC33_PDNALLB;
342 else
343 reg &= ~(DAC33_PDNALLB | DAC33_OSCPDNB |
344 DAC33_DACRPDNB | DAC33_DACLPDNB);
345 dac33_write(component, DAC33_PWR_CTRL, reg);
346}
347
348static inline void dac33_disable_digital(struct snd_soc_component *component)
349{
350 u8 reg;
351
352
353 reg = dac33_read_reg_cache(component, DAC33_SER_AUDIOIF_CTRL_B);
354 reg &= ~DAC33_BCLKON;
355 dac33_write(component, DAC33_SER_AUDIOIF_CTRL_B, reg);
356
357
358 reg = dac33_read_reg_cache(component, DAC33_PWR_CTRL);
359 reg &= ~(DAC33_OSCPDNB | DAC33_DACRPDNB | DAC33_DACLPDNB);
360 dac33_write(component, DAC33_PWR_CTRL, reg);
361}
362
363static int dac33_hard_power(struct snd_soc_component *component, int power)
364{
365 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
366 int ret = 0;
367
368 mutex_lock(&dac33->mutex);
369
370
371 if (unlikely(power == dac33->chip_power)) {
372 dev_dbg(component->dev, "Trying to set the same power state: %s\n",
373 power ? "ON" : "OFF");
374 goto exit;
375 }
376
377 if (power) {
378 ret = regulator_bulk_enable(ARRAY_SIZE(dac33->supplies),
379 dac33->supplies);
380 if (ret != 0) {
381 dev_err(component->dev,
382 "Failed to enable supplies: %d\n", ret);
383 goto exit;
384 }
385
386 if (dac33->power_gpio >= 0)
387 gpio_set_value(dac33->power_gpio, 1);
388
389 dac33->chip_power = 1;
390 } else {
391 dac33_soft_power(component, 0);
392 if (dac33->power_gpio >= 0)
393 gpio_set_value(dac33->power_gpio, 0);
394
395 ret = regulator_bulk_disable(ARRAY_SIZE(dac33->supplies),
396 dac33->supplies);
397 if (ret != 0) {
398 dev_err(component->dev,
399 "Failed to disable supplies: %d\n", ret);
400 goto exit;
401 }
402
403 dac33->chip_power = 0;
404 }
405
406exit:
407 mutex_unlock(&dac33->mutex);
408 return ret;
409}
410
411static int dac33_playback_event(struct snd_soc_dapm_widget *w,
412 struct snd_kcontrol *kcontrol, int event)
413{
414 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
415 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
416
417 switch (event) {
418 case SND_SOC_DAPM_PRE_PMU:
419 if (likely(dac33->substream)) {
420 dac33_calculate_times(dac33->substream, component);
421 dac33_prepare_chip(dac33->substream, component);
422 }
423 break;
424 case SND_SOC_DAPM_POST_PMD:
425 dac33_disable_digital(component);
426 break;
427 }
428 return 0;
429}
430
431static int dac33_get_fifo_mode(struct snd_kcontrol *kcontrol,
432 struct snd_ctl_elem_value *ucontrol)
433{
434 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
435 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
436
437 ucontrol->value.enumerated.item[0] = dac33->fifo_mode;
438
439 return 0;
440}
441
442static int dac33_set_fifo_mode(struct snd_kcontrol *kcontrol,
443 struct snd_ctl_elem_value *ucontrol)
444{
445 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
446 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
447 int ret = 0;
448
449 if (dac33->fifo_mode == ucontrol->value.enumerated.item[0])
450 return 0;
451
452 if (snd_soc_component_is_active(component))
453 return -EPERM;
454
455 if (ucontrol->value.enumerated.item[0] >= DAC33_FIFO_LAST_MODE)
456 ret = -EINVAL;
457 else
458 dac33->fifo_mode = ucontrol->value.enumerated.item[0];
459
460 return ret;
461}
462
463
464static const char *dac33_fifo_mode_texts[] = {
465 "Bypass", "Mode 1", "Mode 7"
466};
467
468static SOC_ENUM_SINGLE_EXT_DECL(dac33_fifo_mode_enum, dac33_fifo_mode_texts);
469
470
471static const char *lr_lineout_gain_texts[] = {
472 "Line -12dB DAC 0dB", "Line -6dB DAC 6dB",
473 "Line 0dB DAC 12dB", "Line 6dB DAC 18dB",
474};
475
476static SOC_ENUM_SINGLE_DECL(l_lineout_gain_enum,
477 DAC33_LDAC_PWR_CTRL, 0,
478 lr_lineout_gain_texts);
479
480static SOC_ENUM_SINGLE_DECL(r_lineout_gain_enum,
481 DAC33_RDAC_PWR_CTRL, 0,
482 lr_lineout_gain_texts);
483
484
485
486
487
488
489
490
491static DECLARE_TLV_DB_SCALE(dac_digivol_tlv, -6350, 50, 0);
492
493static const struct snd_kcontrol_new dac33_snd_controls[] = {
494 SOC_DOUBLE_R_TLV("DAC Digital Playback Volume",
495 DAC33_LDAC_DIG_VOL_CTRL, DAC33_RDAC_DIG_VOL_CTRL,
496 0, 0x7f, 1, dac_digivol_tlv),
497 SOC_DOUBLE_R("DAC Digital Playback Switch",
498 DAC33_LDAC_DIG_VOL_CTRL, DAC33_RDAC_DIG_VOL_CTRL, 7, 1, 1),
499 SOC_DOUBLE_R("Line to Line Out Volume",
500 DAC33_LINEL_TO_LLO_VOL, DAC33_LINER_TO_RLO_VOL, 0, 127, 1),
501 SOC_ENUM("Left Line Output Gain", l_lineout_gain_enum),
502 SOC_ENUM("Right Line Output Gain", r_lineout_gain_enum),
503};
504
505static const struct snd_kcontrol_new dac33_mode_snd_controls[] = {
506 SOC_ENUM_EXT("FIFO Mode", dac33_fifo_mode_enum,
507 dac33_get_fifo_mode, dac33_set_fifo_mode),
508};
509
510
511static const struct snd_kcontrol_new dac33_dapm_abypassl_control =
512 SOC_DAPM_SINGLE("Switch", DAC33_LINEL_TO_LLO_VOL, 7, 1, 1);
513
514static const struct snd_kcontrol_new dac33_dapm_abypassr_control =
515 SOC_DAPM_SINGLE("Switch", DAC33_LINER_TO_RLO_VOL, 7, 1, 1);
516
517
518static const char *dac33_lr_lom_texts[] = {"DAC", "LOP"};
519
520static SOC_ENUM_SINGLE_DECL(dac33_left_lom_enum,
521 DAC33_OUT_AMP_CTRL, 3,
522 dac33_lr_lom_texts);
523
524static const struct snd_kcontrol_new dac33_dapm_left_lom_control =
525SOC_DAPM_ENUM("Route", dac33_left_lom_enum);
526
527static SOC_ENUM_SINGLE_DECL(dac33_right_lom_enum,
528 DAC33_OUT_AMP_CTRL, 2,
529 dac33_lr_lom_texts);
530
531static const struct snd_kcontrol_new dac33_dapm_right_lom_control =
532SOC_DAPM_ENUM("Route", dac33_right_lom_enum);
533
534static const struct snd_soc_dapm_widget dac33_dapm_widgets[] = {
535 SND_SOC_DAPM_OUTPUT("LEFT_LO"),
536 SND_SOC_DAPM_OUTPUT("RIGHT_LO"),
537
538 SND_SOC_DAPM_INPUT("LINEL"),
539 SND_SOC_DAPM_INPUT("LINER"),
540
541 SND_SOC_DAPM_DAC("DACL", "Left Playback", SND_SOC_NOPM, 0, 0),
542 SND_SOC_DAPM_DAC("DACR", "Right Playback", SND_SOC_NOPM, 0, 0),
543
544
545 SND_SOC_DAPM_SWITCH("Analog Left Bypass", SND_SOC_NOPM, 0, 0,
546 &dac33_dapm_abypassl_control),
547 SND_SOC_DAPM_SWITCH("Analog Right Bypass", SND_SOC_NOPM, 0, 0,
548 &dac33_dapm_abypassr_control),
549
550 SND_SOC_DAPM_MUX("Left LOM Inverted From", SND_SOC_NOPM, 0, 0,
551 &dac33_dapm_left_lom_control),
552 SND_SOC_DAPM_MUX("Right LOM Inverted From", SND_SOC_NOPM, 0, 0,
553 &dac33_dapm_right_lom_control),
554
555
556
557
558
559 SND_SOC_DAPM_PGA("Left Bypass PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
560 SND_SOC_DAPM_PGA("Right Bypass PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
561
562 SND_SOC_DAPM_REG(snd_soc_dapm_mixer, "Output Left Amplifier",
563 DAC33_OUT_AMP_PWR_CTRL, 6, 3, 3, 0),
564 SND_SOC_DAPM_REG(snd_soc_dapm_mixer, "Output Right Amplifier",
565 DAC33_OUT_AMP_PWR_CTRL, 4, 3, 3, 0),
566
567 SND_SOC_DAPM_SUPPLY("Left DAC Power",
568 DAC33_LDAC_PWR_CTRL, 2, 0, NULL, 0),
569 SND_SOC_DAPM_SUPPLY("Right DAC Power",
570 DAC33_RDAC_PWR_CTRL, 2, 0, NULL, 0),
571
572 SND_SOC_DAPM_SUPPLY("Codec Power",
573 DAC33_PWR_CTRL, 4, 0, NULL, 0),
574
575 SND_SOC_DAPM_PRE("Pre Playback", dac33_playback_event),
576 SND_SOC_DAPM_POST("Post Playback", dac33_playback_event),
577};
578
579static const struct snd_soc_dapm_route audio_map[] = {
580
581 {"Analog Left Bypass", "Switch", "LINEL"},
582 {"Analog Right Bypass", "Switch", "LINER"},
583
584 {"Output Left Amplifier", NULL, "DACL"},
585 {"Output Right Amplifier", NULL, "DACR"},
586
587 {"Left Bypass PGA", NULL, "Analog Left Bypass"},
588 {"Right Bypass PGA", NULL, "Analog Right Bypass"},
589
590 {"Left LOM Inverted From", "DAC", "Left Bypass PGA"},
591 {"Right LOM Inverted From", "DAC", "Right Bypass PGA"},
592 {"Left LOM Inverted From", "LOP", "Analog Left Bypass"},
593 {"Right LOM Inverted From", "LOP", "Analog Right Bypass"},
594
595 {"Output Left Amplifier", NULL, "Left LOM Inverted From"},
596 {"Output Right Amplifier", NULL, "Right LOM Inverted From"},
597
598 {"DACL", NULL, "Left DAC Power"},
599 {"DACR", NULL, "Right DAC Power"},
600
601 {"Left Bypass PGA", NULL, "Left DAC Power"},
602 {"Right Bypass PGA", NULL, "Right DAC Power"},
603
604
605 {"LEFT_LO", NULL, "Output Left Amplifier"},
606 {"RIGHT_LO", NULL, "Output Right Amplifier"},
607
608 {"LEFT_LO", NULL, "Codec Power"},
609 {"RIGHT_LO", NULL, "Codec Power"},
610};
611
612static int dac33_set_bias_level(struct snd_soc_component *component,
613 enum snd_soc_bias_level level)
614{
615 int ret;
616
617 switch (level) {
618 case SND_SOC_BIAS_ON:
619 break;
620 case SND_SOC_BIAS_PREPARE:
621 break;
622 case SND_SOC_BIAS_STANDBY:
623 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
624
625 ret = dac33_hard_power(component, 1);
626 if (ret != 0)
627 return ret;
628
629 dac33_init_chip(component);
630 }
631 break;
632 case SND_SOC_BIAS_OFF:
633
634 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF)
635 return 0;
636 ret = dac33_hard_power(component, 0);
637 if (ret != 0)
638 return ret;
639 break;
640 }
641
642 return 0;
643}
644
645static inline void dac33_prefill_handler(struct tlv320dac33_priv *dac33)
646{
647 struct snd_soc_component *component = dac33->component;
648 unsigned int delay;
649 unsigned long flags;
650
651 switch (dac33->fifo_mode) {
652 case DAC33_FIFO_MODE1:
653 dac33_write16(component, DAC33_NSAMPLE_MSB,
654 DAC33_THRREG(dac33->nsample));
655
656
657 spin_lock_irqsave(&dac33->lock, flags);
658 dac33->t_stamp2 = ktime_to_us(ktime_get());
659 dac33->t_stamp1 = dac33->t_stamp2;
660 spin_unlock_irqrestore(&dac33->lock, flags);
661
662 dac33_write16(component, DAC33_PREFILL_MSB,
663 DAC33_THRREG(dac33->alarm_threshold));
664
665 delay = SAMPLES_TO_US(dac33->burst_rate,
666 dac33->alarm_threshold) + 1000;
667 usleep_range(delay, delay + 500);
668 dac33_write(component, DAC33_FIFO_IRQ_MASK, DAC33_MAT);
669 break;
670 case DAC33_FIFO_MODE7:
671
672 spin_lock_irqsave(&dac33->lock, flags);
673 dac33->t_stamp1 = ktime_to_us(ktime_get());
674
675 dac33->t_stamp1 -= dac33->mode7_us_to_lthr;
676 spin_unlock_irqrestore(&dac33->lock, flags);
677
678 dac33_write16(component, DAC33_PREFILL_MSB,
679 DAC33_THRREG(DAC33_MODE7_MARGIN));
680
681
682 dac33_write(component, DAC33_FIFO_IRQ_MASK, DAC33_MUT);
683 break;
684 default:
685 dev_warn(component->dev, "Unhandled FIFO mode: %d\n",
686 dac33->fifo_mode);
687 break;
688 }
689}
690
691static inline void dac33_playback_handler(struct tlv320dac33_priv *dac33)
692{
693 struct snd_soc_component *component = dac33->component;
694 unsigned long flags;
695
696 switch (dac33->fifo_mode) {
697 case DAC33_FIFO_MODE1:
698
699 spin_lock_irqsave(&dac33->lock, flags);
700 dac33->t_stamp2 = ktime_to_us(ktime_get());
701 spin_unlock_irqrestore(&dac33->lock, flags);
702
703 dac33_write16(component, DAC33_NSAMPLE_MSB,
704 DAC33_THRREG(dac33->nsample));
705 break;
706 case DAC33_FIFO_MODE7:
707
708 break;
709 default:
710 dev_warn(component->dev, "Unhandled FIFO mode: %d\n",
711 dac33->fifo_mode);
712 break;
713 }
714}
715
716static void dac33_work(struct work_struct *work)
717{
718 struct snd_soc_component *component;
719 struct tlv320dac33_priv *dac33;
720 u8 reg;
721
722 dac33 = container_of(work, struct tlv320dac33_priv, work);
723 component = dac33->component;
724
725 mutex_lock(&dac33->mutex);
726 switch (dac33->state) {
727 case DAC33_PREFILL:
728 dac33->state = DAC33_PLAYBACK;
729 dac33_prefill_handler(dac33);
730 break;
731 case DAC33_PLAYBACK:
732 dac33_playback_handler(dac33);
733 break;
734 case DAC33_IDLE:
735 break;
736 case DAC33_FLUSH:
737 dac33->state = DAC33_IDLE;
738
739 dac33_write(component, DAC33_FIFO_IRQ_MASK, 0);
740
741
742 reg = dac33_read_reg_cache(component, DAC33_FIFO_CTRL_A);
743 reg |= DAC33_FIFOFLUSH;
744 dac33_write(component, DAC33_FIFO_CTRL_A, reg);
745 break;
746 }
747 mutex_unlock(&dac33->mutex);
748}
749
750static irqreturn_t dac33_interrupt_handler(int irq, void *dev)
751{
752 struct snd_soc_component *component = dev;
753 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
754 unsigned long flags;
755
756 spin_lock_irqsave(&dac33->lock, flags);
757 dac33->t_stamp1 = ktime_to_us(ktime_get());
758 spin_unlock_irqrestore(&dac33->lock, flags);
759
760
761 if (dac33->fifo_mode != DAC33_FIFO_MODE7)
762 schedule_work(&dac33->work);
763
764 return IRQ_HANDLED;
765}
766
767static void dac33_oscwait(struct snd_soc_component *component)
768{
769 int timeout = 60;
770 u8 reg;
771
772 do {
773 usleep_range(1000, 2000);
774 dac33_read(component, DAC33_INT_OSC_STATUS, ®);
775 } while (((reg & 0x03) != DAC33_OSCSTATUS_NORMAL) && timeout--);
776 if ((reg & 0x03) != DAC33_OSCSTATUS_NORMAL)
777 dev_err(component->dev,
778 "internal oscillator calibration failed\n");
779}
780
781static int dac33_startup(struct snd_pcm_substream *substream,
782 struct snd_soc_dai *dai)
783{
784 struct snd_soc_component *component = dai->component;
785 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
786
787
788 dac33->substream = substream;
789
790 return 0;
791}
792
793static void dac33_shutdown(struct snd_pcm_substream *substream,
794 struct snd_soc_dai *dai)
795{
796 struct snd_soc_component *component = dai->component;
797 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
798
799 dac33->substream = NULL;
800}
801
802#define CALC_BURST_RATE(bclkdiv, bclk_per_sample) \
803 (BURST_BASEFREQ_HZ / bclkdiv / bclk_per_sample)
804static int dac33_hw_params(struct snd_pcm_substream *substream,
805 struct snd_pcm_hw_params *params,
806 struct snd_soc_dai *dai)
807{
808 struct snd_soc_component *component = dai->component;
809 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
810
811
812 switch (params_rate(params)) {
813 case 44100:
814 case 48000:
815 break;
816 default:
817 dev_err(component->dev, "unsupported rate %d\n",
818 params_rate(params));
819 return -EINVAL;
820 }
821
822 switch (params_width(params)) {
823 case 16:
824 dac33->fifo_size = DAC33_FIFO_SIZE_16BIT;
825 dac33->burst_rate = CALC_BURST_RATE(dac33->burst_bclkdiv, 32);
826 break;
827 case 32:
828 dac33->fifo_size = DAC33_FIFO_SIZE_24BIT;
829 dac33->burst_rate = CALC_BURST_RATE(dac33->burst_bclkdiv, 64);
830 break;
831 default:
832 dev_err(component->dev, "unsupported width %d\n",
833 params_width(params));
834 return -EINVAL;
835 }
836
837 return 0;
838}
839
840#define CALC_OSCSET(rate, refclk) ( \
841 ((((rate * 10000) / refclk) * 4096) + 7000) / 10000)
842#define CALC_RATIOSET(rate, refclk) ( \
843 ((((refclk * 100000) / rate) * 16384) + 50000) / 100000)
844
845
846
847
848
849
850static int dac33_prepare_chip(struct snd_pcm_substream *substream,
851 struct snd_soc_component *component)
852{
853 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
854 unsigned int oscset, ratioset, pwr_ctrl, reg_tmp;
855 u8 aictrl_a, aictrl_b, fifoctrl_a;
856
857 switch (substream->runtime->rate) {
858 case 44100:
859 case 48000:
860 oscset = CALC_OSCSET(substream->runtime->rate, dac33->refclk);
861 ratioset = CALC_RATIOSET(substream->runtime->rate,
862 dac33->refclk);
863 break;
864 default:
865 dev_err(component->dev, "unsupported rate %d\n",
866 substream->runtime->rate);
867 return -EINVAL;
868 }
869
870
871 aictrl_a = dac33_read_reg_cache(component, DAC33_SER_AUDIOIF_CTRL_A);
872 aictrl_a &= ~(DAC33_NCYCL_MASK | DAC33_WLEN_MASK);
873
874 fifoctrl_a = dac33_read_reg_cache(component, DAC33_FIFO_CTRL_A);
875 fifoctrl_a &= ~DAC33_FIFOFLUSH;
876
877 fifoctrl_a &= ~DAC33_WIDTH;
878 switch (substream->runtime->format) {
879 case SNDRV_PCM_FORMAT_S16_LE:
880 aictrl_a |= (DAC33_NCYCL_16 | DAC33_WLEN_16);
881 fifoctrl_a |= DAC33_WIDTH;
882 break;
883 case SNDRV_PCM_FORMAT_S32_LE:
884 aictrl_a |= (DAC33_NCYCL_32 | DAC33_WLEN_24);
885 break;
886 default:
887 dev_err(component->dev, "unsupported format %d\n",
888 substream->runtime->format);
889 return -EINVAL;
890 }
891
892 mutex_lock(&dac33->mutex);
893
894 if (!dac33->chip_power) {
895
896
897
898
899 mutex_unlock(&dac33->mutex);
900 return 0;
901 }
902
903 dac33_soft_power(component, 0);
904 dac33_soft_power(component, 1);
905
906 reg_tmp = dac33_read_reg_cache(component, DAC33_INT_OSC_CTRL);
907 dac33_write(component, DAC33_INT_OSC_CTRL, reg_tmp);
908
909
910 dac33_write16(component, DAC33_INT_OSC_FREQ_RAT_A, oscset);
911
912
913 dac33_write(component, DAC33_CALIB_TIME, 96);
914
915
916 dac33_write(component, DAC33_INT_OSC_CTRL_B, DAC33_ADJTHRSHLD(2) |
917 DAC33_ADJSTEP(1));
918
919
920 dac33_write(component, DAC33_INT_OSC_CTRL_C, DAC33_REFDIV(4));
921
922 pwr_ctrl = dac33_read_reg_cache(component, DAC33_PWR_CTRL);
923 pwr_ctrl |= DAC33_OSCPDNB | DAC33_DACRPDNB | DAC33_DACLPDNB;
924 dac33_write(component, DAC33_PWR_CTRL, pwr_ctrl);
925
926 dac33_oscwait(component);
927
928 if (dac33->fifo_mode) {
929
930
931 dac33_write(component, DAC33_ASRC_CTRL_A, DAC33_SRCLKDIV(1));
932 dac33_write(component, DAC33_ASRC_CTRL_B, 1);
933
934
935 dac33_write16(component, DAC33_SRC_REF_CLK_RATIO_A, ratioset);
936
937
938 dac33_write(component, DAC33_INTP_CTRL_A, DAC33_INTPM_AHIGH);
939 } else {
940
941
942 dac33_write(component, DAC33_ASRC_CTRL_A, DAC33_SRCBYP);
943 dac33_write(component, DAC33_ASRC_CTRL_B, 0);
944 }
945
946
947 switch (dac33->fifo_mode) {
948 case DAC33_FIFO_MODE1:
949 dac33_write(component, DAC33_FIFO_IRQ_MODE_B,
950 DAC33_ATM(DAC33_FIFO_IRQ_MODE_LEVEL));
951 break;
952 case DAC33_FIFO_MODE7:
953 dac33_write(component, DAC33_FIFO_IRQ_MODE_A,
954 DAC33_UTM(DAC33_FIFO_IRQ_MODE_LEVEL));
955 break;
956 default:
957
958 break;
959 }
960
961 aictrl_b = dac33_read_reg_cache(component, DAC33_SER_AUDIOIF_CTRL_B);
962
963 switch (dac33->fifo_mode) {
964 case DAC33_FIFO_MODE1:
965
966
967
968
969
970
971 fifoctrl_a &= ~DAC33_FBYPAS;
972 fifoctrl_a &= ~DAC33_FAUTO;
973 if (dac33->keep_bclk)
974 aictrl_b |= DAC33_BCLKON;
975 else
976 aictrl_b &= ~DAC33_BCLKON;
977 break;
978 case DAC33_FIFO_MODE7:
979
980
981
982
983
984
985 fifoctrl_a &= ~DAC33_FBYPAS;
986 fifoctrl_a |= DAC33_FAUTO;
987 if (dac33->keep_bclk)
988 aictrl_b |= DAC33_BCLKON;
989 else
990 aictrl_b &= ~DAC33_BCLKON;
991 break;
992 default:
993
994
995
996
997
998 fifoctrl_a |= DAC33_FBYPAS;
999 aictrl_b |= DAC33_BCLKON;
1000 break;
1001 }
1002
1003 dac33_write(component, DAC33_FIFO_CTRL_A, fifoctrl_a);
1004 dac33_write(component, DAC33_SER_AUDIOIF_CTRL_A, aictrl_a);
1005 dac33_write(component, DAC33_SER_AUDIOIF_CTRL_B, aictrl_b);
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016 if (dac33->fifo_mode)
1017 dac33_write(component, DAC33_SER_AUDIOIF_CTRL_C,
1018 dac33->burst_bclkdiv);
1019 else
1020 if (substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE)
1021 dac33_write(component, DAC33_SER_AUDIOIF_CTRL_C, 32);
1022 else
1023 dac33_write(component, DAC33_SER_AUDIOIF_CTRL_C, 16);
1024
1025 switch (dac33->fifo_mode) {
1026 case DAC33_FIFO_MODE1:
1027 dac33_write16(component, DAC33_ATHR_MSB,
1028 DAC33_THRREG(dac33->alarm_threshold));
1029 break;
1030 case DAC33_FIFO_MODE7:
1031
1032
1033
1034
1035 dac33_write16(component, DAC33_UTHR_MSB, DAC33_THRREG(dac33->uthr));
1036 dac33_write16(component, DAC33_LTHR_MSB,
1037 DAC33_THRREG(DAC33_MODE7_MARGIN));
1038 break;
1039 default:
1040 break;
1041 }
1042
1043 mutex_unlock(&dac33->mutex);
1044
1045 return 0;
1046}
1047
1048static void dac33_calculate_times(struct snd_pcm_substream *substream,
1049 struct snd_soc_component *component)
1050{
1051 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
1052 unsigned int period_size = substream->runtime->period_size;
1053 unsigned int rate = substream->runtime->rate;
1054 unsigned int nsample_limit;
1055
1056
1057 if (!dac33->fifo_mode)
1058 return;
1059
1060 switch (dac33->fifo_mode) {
1061 case DAC33_FIFO_MODE1:
1062
1063 dac33->alarm_threshold = US_TO_SAMPLES(rate,
1064 dac33->mode1_latency);
1065 nsample_limit = dac33->fifo_size - dac33->alarm_threshold;
1066
1067 if (period_size <= dac33->alarm_threshold)
1068
1069
1070
1071
1072 dac33->nsample = period_size *
1073 ((dac33->alarm_threshold / period_size) +
1074 (dac33->alarm_threshold % period_size ?
1075 1 : 0));
1076 else if (period_size > nsample_limit)
1077 dac33->nsample = nsample_limit;
1078 else
1079 dac33->nsample = period_size;
1080
1081 dac33->mode1_us_burst = SAMPLES_TO_US(dac33->burst_rate,
1082 dac33->nsample);
1083 dac33->t_stamp1 = 0;
1084 dac33->t_stamp2 = 0;
1085 break;
1086 case DAC33_FIFO_MODE7:
1087 dac33->uthr = UTHR_FROM_PERIOD_SIZE(period_size, rate,
1088 dac33->burst_rate) + 9;
1089 if (dac33->uthr > (dac33->fifo_size - DAC33_MODE7_MARGIN))
1090 dac33->uthr = dac33->fifo_size - DAC33_MODE7_MARGIN;
1091 if (dac33->uthr < (DAC33_MODE7_MARGIN + 10))
1092 dac33->uthr = (DAC33_MODE7_MARGIN + 10);
1093
1094 dac33->mode7_us_to_lthr =
1095 SAMPLES_TO_US(substream->runtime->rate,
1096 dac33->uthr - DAC33_MODE7_MARGIN + 1);
1097 dac33->t_stamp1 = 0;
1098 break;
1099 default:
1100 break;
1101 }
1102
1103}
1104
1105static int dac33_pcm_trigger(struct snd_pcm_substream *substream, int cmd,
1106 struct snd_soc_dai *dai)
1107{
1108 struct snd_soc_component *component = dai->component;
1109 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
1110 int ret = 0;
1111
1112 switch (cmd) {
1113 case SNDRV_PCM_TRIGGER_START:
1114 case SNDRV_PCM_TRIGGER_RESUME:
1115 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1116 if (dac33->fifo_mode) {
1117 dac33->state = DAC33_PREFILL;
1118 schedule_work(&dac33->work);
1119 }
1120 break;
1121 case SNDRV_PCM_TRIGGER_STOP:
1122 case SNDRV_PCM_TRIGGER_SUSPEND:
1123 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1124 if (dac33->fifo_mode) {
1125 dac33->state = DAC33_FLUSH;
1126 schedule_work(&dac33->work);
1127 }
1128 break;
1129 default:
1130 ret = -EINVAL;
1131 }
1132
1133 return ret;
1134}
1135
1136static snd_pcm_sframes_t dac33_dai_delay(
1137 struct snd_pcm_substream *substream,
1138 struct snd_soc_dai *dai)
1139{
1140 struct snd_soc_component *component = dai->component;
1141 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
1142 unsigned long long t0, t1, t_now;
1143 unsigned int time_delta, uthr;
1144 int samples_out, samples_in, samples;
1145 snd_pcm_sframes_t delay = 0;
1146 unsigned long flags;
1147
1148 switch (dac33->fifo_mode) {
1149 case DAC33_FIFO_BYPASS:
1150 break;
1151 case DAC33_FIFO_MODE1:
1152 spin_lock_irqsave(&dac33->lock, flags);
1153 t0 = dac33->t_stamp1;
1154 t1 = dac33->t_stamp2;
1155 spin_unlock_irqrestore(&dac33->lock, flags);
1156 t_now = ktime_to_us(ktime_get());
1157
1158
1159 if (!t1)
1160 goto out;
1161
1162 if (t0 > t1) {
1163
1164
1165
1166
1167 time_delta = t_now - t0;
1168 samples_out = time_delta ? US_TO_SAMPLES(
1169 substream->runtime->rate,
1170 time_delta) : 0;
1171
1172 if (likely(dac33->alarm_threshold > samples_out))
1173 delay = dac33->alarm_threshold - samples_out;
1174 else
1175 delay = 0;
1176 } else if ((t_now - t1) <= dac33->mode1_us_burst) {
1177
1178
1179
1180
1181 time_delta = t_now - t0;
1182 samples_out = time_delta ? US_TO_SAMPLES(
1183 substream->runtime->rate,
1184 time_delta) : 0;
1185
1186 time_delta = t_now - t1;
1187 samples_in = time_delta ? US_TO_SAMPLES(
1188 dac33->burst_rate,
1189 time_delta) : 0;
1190
1191 samples = dac33->alarm_threshold;
1192 samples += (samples_in - samples_out);
1193
1194 if (likely(samples > 0))
1195 delay = samples;
1196 else
1197 delay = 0;
1198 } else {
1199
1200
1201
1202
1203 time_delta = t_now - t0;
1204 samples_out = time_delta ? US_TO_SAMPLES(
1205 substream->runtime->rate,
1206 time_delta) : 0;
1207
1208 samples_in = dac33->nsample;
1209 samples = dac33->alarm_threshold;
1210 samples += (samples_in - samples_out);
1211
1212 if (likely(samples > 0))
1213 delay = samples > dac33->fifo_size ?
1214 dac33->fifo_size : samples;
1215 else
1216 delay = 0;
1217 }
1218 break;
1219 case DAC33_FIFO_MODE7:
1220 spin_lock_irqsave(&dac33->lock, flags);
1221 t0 = dac33->t_stamp1;
1222 uthr = dac33->uthr;
1223 spin_unlock_irqrestore(&dac33->lock, flags);
1224 t_now = ktime_to_us(ktime_get());
1225
1226
1227 if (!t0)
1228 goto out;
1229
1230 if (t_now <= t0) {
1231
1232
1233
1234
1235 delay = uthr;
1236 goto out;
1237 }
1238
1239 time_delta = t_now - t0;
1240 if (time_delta <= dac33->mode7_us_to_lthr) {
1241
1242
1243
1244
1245 samples_out = US_TO_SAMPLES(
1246 substream->runtime->rate,
1247 time_delta);
1248
1249 if (likely(uthr > samples_out))
1250 delay = uthr - samples_out;
1251 else
1252 delay = 0;
1253 } else {
1254
1255
1256
1257
1258 time_delta = time_delta - dac33->mode7_us_to_lthr;
1259
1260 samples_out = US_TO_SAMPLES(
1261 substream->runtime->rate,
1262 time_delta);
1263 samples_in = US_TO_SAMPLES(
1264 dac33->burst_rate,
1265 time_delta);
1266 delay = DAC33_MODE7_MARGIN + samples_in - samples_out;
1267
1268 if (unlikely(delay > uthr))
1269 delay = uthr;
1270 }
1271 break;
1272 default:
1273 dev_warn(component->dev, "Unhandled FIFO mode: %d\n",
1274 dac33->fifo_mode);
1275 break;
1276 }
1277out:
1278 return delay;
1279}
1280
1281static int dac33_set_dai_sysclk(struct snd_soc_dai *codec_dai,
1282 int clk_id, unsigned int freq, int dir)
1283{
1284 struct snd_soc_component *component = codec_dai->component;
1285 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
1286 u8 ioc_reg, asrcb_reg;
1287
1288 ioc_reg = dac33_read_reg_cache(component, DAC33_INT_OSC_CTRL);
1289 asrcb_reg = dac33_read_reg_cache(component, DAC33_ASRC_CTRL_B);
1290 switch (clk_id) {
1291 case TLV320DAC33_MCLK:
1292 ioc_reg |= DAC33_REFSEL;
1293 asrcb_reg |= DAC33_SRCREFSEL;
1294 break;
1295 case TLV320DAC33_SLEEPCLK:
1296 ioc_reg &= ~DAC33_REFSEL;
1297 asrcb_reg &= ~DAC33_SRCREFSEL;
1298 break;
1299 default:
1300 dev_err(component->dev, "Invalid clock ID (%d)\n", clk_id);
1301 break;
1302 }
1303 dac33->refclk = freq;
1304
1305 dac33_write_reg_cache(component, DAC33_INT_OSC_CTRL, ioc_reg);
1306 dac33_write_reg_cache(component, DAC33_ASRC_CTRL_B, asrcb_reg);
1307
1308 return 0;
1309}
1310
1311static int dac33_set_dai_fmt(struct snd_soc_dai *codec_dai,
1312 unsigned int fmt)
1313{
1314 struct snd_soc_component *component = codec_dai->component;
1315 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
1316 u8 aictrl_a, aictrl_b;
1317
1318 aictrl_a = dac33_read_reg_cache(component, DAC33_SER_AUDIOIF_CTRL_A);
1319 aictrl_b = dac33_read_reg_cache(component, DAC33_SER_AUDIOIF_CTRL_B);
1320
1321 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1322 case SND_SOC_DAIFMT_CBM_CFM:
1323
1324 aictrl_a |= (DAC33_MSBCLK | DAC33_MSWCLK);
1325 break;
1326 case SND_SOC_DAIFMT_CBS_CFS:
1327
1328 if (dac33->fifo_mode) {
1329 dev_err(component->dev, "FIFO mode requires master mode\n");
1330 return -EINVAL;
1331 } else
1332 aictrl_a &= ~(DAC33_MSBCLK | DAC33_MSWCLK);
1333 break;
1334 default:
1335 return -EINVAL;
1336 }
1337
1338 aictrl_a &= ~DAC33_AFMT_MASK;
1339 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1340 case SND_SOC_DAIFMT_I2S:
1341 aictrl_a |= DAC33_AFMT_I2S;
1342 break;
1343 case SND_SOC_DAIFMT_DSP_A:
1344 aictrl_a |= DAC33_AFMT_DSP;
1345 aictrl_b &= ~DAC33_DATA_DELAY_MASK;
1346 aictrl_b |= DAC33_DATA_DELAY(0);
1347 break;
1348 case SND_SOC_DAIFMT_RIGHT_J:
1349 aictrl_a |= DAC33_AFMT_RIGHT_J;
1350 break;
1351 case SND_SOC_DAIFMT_LEFT_J:
1352 aictrl_a |= DAC33_AFMT_LEFT_J;
1353 break;
1354 default:
1355 dev_err(component->dev, "Unsupported format (%u)\n",
1356 fmt & SND_SOC_DAIFMT_FORMAT_MASK);
1357 return -EINVAL;
1358 }
1359
1360 dac33_write_reg_cache(component, DAC33_SER_AUDIOIF_CTRL_A, aictrl_a);
1361 dac33_write_reg_cache(component, DAC33_SER_AUDIOIF_CTRL_B, aictrl_b);
1362
1363 return 0;
1364}
1365
1366static int dac33_soc_probe(struct snd_soc_component *component)
1367{
1368 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
1369 int ret = 0;
1370
1371 dac33->component = component;
1372
1373
1374 ret = dac33_hard_power(component, 1);
1375 if (ret != 0) {
1376 dev_err(component->dev, "Failed to power up component: %d\n", ret);
1377 goto err_power;
1378 }
1379 ret = dac33_read_id(component);
1380 dac33_hard_power(component, 0);
1381
1382 if (ret < 0) {
1383 dev_err(component->dev, "Failed to read chip ID: %d\n", ret);
1384 ret = -ENODEV;
1385 goto err_power;
1386 }
1387
1388
1389 if (dac33->irq >= 0) {
1390 ret = request_irq(dac33->irq, dac33_interrupt_handler,
1391 IRQF_TRIGGER_RISING,
1392 component->name, component);
1393 if (ret < 0) {
1394 dev_err(component->dev, "Could not request IRQ%d (%d)\n",
1395 dac33->irq, ret);
1396 dac33->irq = -1;
1397 }
1398 if (dac33->irq != -1) {
1399 INIT_WORK(&dac33->work, dac33_work);
1400 }
1401 }
1402
1403
1404 if (dac33->irq >= 0)
1405 snd_soc_add_component_controls(component, dac33_mode_snd_controls,
1406 ARRAY_SIZE(dac33_mode_snd_controls));
1407
1408err_power:
1409 return ret;
1410}
1411
1412static void dac33_soc_remove(struct snd_soc_component *component)
1413{
1414 struct tlv320dac33_priv *dac33 = snd_soc_component_get_drvdata(component);
1415
1416 if (dac33->irq >= 0) {
1417 free_irq(dac33->irq, dac33->component);
1418 flush_work(&dac33->work);
1419 }
1420}
1421
1422static const struct snd_soc_component_driver soc_component_dev_tlv320dac33 = {
1423 .read = dac33_read_reg_cache,
1424 .write = dac33_write_locked,
1425 .set_bias_level = dac33_set_bias_level,
1426 .probe = dac33_soc_probe,
1427 .remove = dac33_soc_remove,
1428 .controls = dac33_snd_controls,
1429 .num_controls = ARRAY_SIZE(dac33_snd_controls),
1430 .dapm_widgets = dac33_dapm_widgets,
1431 .num_dapm_widgets = ARRAY_SIZE(dac33_dapm_widgets),
1432 .dapm_routes = audio_map,
1433 .num_dapm_routes = ARRAY_SIZE(audio_map),
1434 .use_pmdown_time = 1,
1435 .endianness = 1,
1436 .non_legacy_dai_naming = 1,
1437};
1438
1439#define DAC33_RATES (SNDRV_PCM_RATE_44100 | \
1440 SNDRV_PCM_RATE_48000)
1441#define DAC33_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE)
1442
1443static const struct snd_soc_dai_ops dac33_dai_ops = {
1444 .startup = dac33_startup,
1445 .shutdown = dac33_shutdown,
1446 .hw_params = dac33_hw_params,
1447 .trigger = dac33_pcm_trigger,
1448 .delay = dac33_dai_delay,
1449 .set_sysclk = dac33_set_dai_sysclk,
1450 .set_fmt = dac33_set_dai_fmt,
1451};
1452
1453static struct snd_soc_dai_driver dac33_dai = {
1454 .name = "tlv320dac33-hifi",
1455 .playback = {
1456 .stream_name = "Playback",
1457 .channels_min = 2,
1458 .channels_max = 2,
1459 .rates = DAC33_RATES,
1460 .formats = DAC33_FORMATS,
1461 .sig_bits = 24,
1462 },
1463 .ops = &dac33_dai_ops,
1464};
1465
1466static int dac33_i2c_probe(struct i2c_client *client,
1467 const struct i2c_device_id *id)
1468{
1469 struct tlv320dac33_platform_data *pdata;
1470 struct tlv320dac33_priv *dac33;
1471 int ret, i;
1472
1473 if (client->dev.platform_data == NULL) {
1474 dev_err(&client->dev, "Platform data not set\n");
1475 return -ENODEV;
1476 }
1477 pdata = client->dev.platform_data;
1478
1479 dac33 = devm_kzalloc(&client->dev, sizeof(struct tlv320dac33_priv),
1480 GFP_KERNEL);
1481 if (dac33 == NULL)
1482 return -ENOMEM;
1483
1484 dac33->reg_cache = devm_kmemdup(&client->dev,
1485 dac33_reg,
1486 ARRAY_SIZE(dac33_reg) * sizeof(u8),
1487 GFP_KERNEL);
1488 if (!dac33->reg_cache)
1489 return -ENOMEM;
1490
1491 dac33->i2c = client;
1492 mutex_init(&dac33->mutex);
1493 spin_lock_init(&dac33->lock);
1494
1495 i2c_set_clientdata(client, dac33);
1496
1497 dac33->power_gpio = pdata->power_gpio;
1498 dac33->burst_bclkdiv = pdata->burst_bclkdiv;
1499 dac33->keep_bclk = pdata->keep_bclk;
1500 dac33->mode1_latency = pdata->mode1_latency;
1501 if (!dac33->mode1_latency)
1502 dac33->mode1_latency = 10000;
1503 dac33->irq = client->irq;
1504
1505 dac33->fifo_mode = DAC33_FIFO_BYPASS;
1506
1507
1508 if (dac33->power_gpio >= 0) {
1509 ret = gpio_request(dac33->power_gpio, "tlv320dac33 reset");
1510 if (ret < 0) {
1511 dev_err(&client->dev,
1512 "Failed to request reset GPIO (%d)\n",
1513 dac33->power_gpio);
1514 goto err_gpio;
1515 }
1516 gpio_direction_output(dac33->power_gpio, 0);
1517 }
1518
1519 for (i = 0; i < ARRAY_SIZE(dac33->supplies); i++)
1520 dac33->supplies[i].supply = dac33_supply_names[i];
1521
1522 ret = devm_regulator_bulk_get(&client->dev, ARRAY_SIZE(dac33->supplies),
1523 dac33->supplies);
1524
1525 if (ret != 0) {
1526 dev_err(&client->dev, "Failed to request supplies: %d\n", ret);
1527 goto err_get;
1528 }
1529
1530 ret = devm_snd_soc_register_component(&client->dev,
1531 &soc_component_dev_tlv320dac33, &dac33_dai, 1);
1532 if (ret < 0)
1533 goto err_get;
1534
1535 return ret;
1536err_get:
1537 if (dac33->power_gpio >= 0)
1538 gpio_free(dac33->power_gpio);
1539err_gpio:
1540 return ret;
1541}
1542
1543static int dac33_i2c_remove(struct i2c_client *client)
1544{
1545 struct tlv320dac33_priv *dac33 = i2c_get_clientdata(client);
1546
1547 if (unlikely(dac33->chip_power))
1548 dac33_hard_power(dac33->component, 0);
1549
1550 if (dac33->power_gpio >= 0)
1551 gpio_free(dac33->power_gpio);
1552
1553 return 0;
1554}
1555
1556static const struct i2c_device_id tlv320dac33_i2c_id[] = {
1557 {
1558 .name = "tlv320dac33",
1559 .driver_data = 0,
1560 },
1561 { },
1562};
1563MODULE_DEVICE_TABLE(i2c, tlv320dac33_i2c_id);
1564
1565static struct i2c_driver tlv320dac33_i2c_driver = {
1566 .driver = {
1567 .name = "tlv320dac33-codec",
1568 },
1569 .probe = dac33_i2c_probe,
1570 .remove = dac33_i2c_remove,
1571 .id_table = tlv320dac33_i2c_id,
1572};
1573
1574module_i2c_driver(tlv320dac33_i2c_driver);
1575
1576MODULE_DESCRIPTION("ASoC TLV320DAC33 codec driver");
1577MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
1578MODULE_LICENSE("GPL");
1579
