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staging: xgifb: vb_setmode: make XGI_SetXG27FPBits() static
[linux/fpc-iii.git] / sound / soc / codecs / tlv320dac33.c
blobdc8a2b2bdc1ce73b939cc0455f7ba4931c153c2e
1 /*
2 * ALSA SoC Texas Instruments TLV320DAC33 codec driver
3 *
4 * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
5 *
6 * Copyright: (C) 2009 Nokia Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA
21 *
22 */
23
24 #include <linux/module.h>
25 #include <linux/moduleparam.h>
26 #include <linux/init.h>
27 #include <linux/delay.h>
28 #include <linux/pm.h>
29 #include <linux/i2c.h>
30 #include <linux/platform_device.h>
31 #include <linux/interrupt.h>
32 #include <linux/gpio.h>
33 #include <linux/regulator/consumer.h>
34 #include <linux/slab.h>
35 #include <sound/core.h>
36 #include <sound/pcm.h>
37 #include <sound/pcm_params.h>
38 #include <sound/soc.h>
39 #include <sound/initval.h>
40 #include <sound/tlv.h>
41
42 #include <sound/tlv320dac33-plat.h>
43 #include "tlv320dac33.h"
44
45 /*
46 * The internal FIFO is 24576 bytes long
47 * It can be configured to hold 16bit or 24bit samples
48 * In 16bit configuration the FIFO can hold 6144 stereo samples
49 * In 24bit configuration the FIFO can hold 4096 stereo samples
50 */
51 #define DAC33_FIFO_SIZE_16BIT 6144
52 #define DAC33_FIFO_SIZE_24BIT 4096
53 #define DAC33_MODE7_MARGIN 10 /* Safety margin for FIFO in Mode7 */
54
55 #define BURST_BASEFREQ_HZ 49152000
56
57 #define SAMPLES_TO_US(rate, samples) \
58 (1000000000 / (((rate) * 1000) / (samples)))
59
60 #define US_TO_SAMPLES(rate, us) \
61 ((rate) / (1000000 / ((us) < 1000000 ? (us) : 1000000)))
62
63 #define UTHR_FROM_PERIOD_SIZE(samples, playrate, burstrate) \
64 (((samples)*5000) / (((burstrate)*5000) / ((burstrate) - (playrate))))
65
66 static void dac33_calculate_times(struct snd_pcm_substream *substream);
67 static int dac33_prepare_chip(struct snd_pcm_substream *substream);
68
69 enum dac33_state {
70 DAC33_IDLE = 0,
71 DAC33_PREFILL,
72 DAC33_PLAYBACK,
73 DAC33_FLUSH,
74 };
75
76 enum dac33_fifo_modes {
77 DAC33_FIFO_BYPASS = 0,
78 DAC33_FIFO_MODE1,
79 DAC33_FIFO_MODE7,
80 DAC33_FIFO_LAST_MODE,
81 };
82
83 #define DAC33_NUM_SUPPLIES 3
84 static const char *dac33_supply_names[DAC33_NUM_SUPPLIES] = {
85 "AVDD",
86 "DVDD",
87 "IOVDD",
88 };
89
90 struct tlv320dac33_priv {
91 struct mutex mutex;
92 struct workqueue_struct *dac33_wq;
93 struct work_struct work;
94 struct snd_soc_codec *codec;
95 struct regulator_bulk_data supplies[DAC33_NUM_SUPPLIES];
96 struct snd_pcm_substream *substream;
97 int power_gpio;
98 int chip_power;
99 int irq;
100 unsigned int refclk;
101
102 unsigned int alarm_threshold; /* set to be half of LATENCY_TIME_MS */
103 enum dac33_fifo_modes fifo_mode;/* FIFO mode selection */
104 unsigned int fifo_size; /* Size of the FIFO in samples */
105 unsigned int nsample; /* burst read amount from host */
106 int mode1_latency; /* latency caused by the i2c writes in
107 * us */
108 u8 burst_bclkdiv; /* BCLK divider value in burst mode */
109 unsigned int burst_rate; /* Interface speed in Burst modes */
110
111 int keep_bclk; /* Keep the BCLK continuously running
112 * in FIFO modes */
113 spinlock_t lock;
114 unsigned long long t_stamp1; /* Time stamp for FIFO modes to */
115 unsigned long long t_stamp2; /* calculate the FIFO caused delay */
116
117 unsigned int mode1_us_burst; /* Time to burst read n number of
118 * samples */
119 unsigned int mode7_us_to_lthr; /* Time to reach lthr from uthr */
120
121 unsigned int uthr;
122
123 enum dac33_state state;
124 enum snd_soc_control_type control_type;
125 void *control_data;
126 };
127
128 static const u8 dac33_reg[DAC33_CACHEREGNUM] = {
129 0x00, 0x00, 0x00, 0x00, /* 0x00 - 0x03 */
130 0x00, 0x00, 0x00, 0x00, /* 0x04 - 0x07 */
131 0x00, 0x00, 0x00, 0x00, /* 0x08 - 0x0b */
132 0x00, 0x00, 0x00, 0x00, /* 0x0c - 0x0f */
133 0x00, 0x00, 0x00, 0x00, /* 0x10 - 0x13 */
134 0x00, 0x00, 0x00, 0x00, /* 0x14 - 0x17 */
135 0x00, 0x00, 0x00, 0x00, /* 0x18 - 0x1b */
136 0x00, 0x00, 0x00, 0x00, /* 0x1c - 0x1f */
137 0x00, 0x00, 0x00, 0x00, /* 0x20 - 0x23 */
138 0x00, 0x00, 0x00, 0x00, /* 0x24 - 0x27 */
139 0x00, 0x00, 0x00, 0x00, /* 0x28 - 0x2b */
140 0x00, 0x00, 0x00, 0x80, /* 0x2c - 0x2f */
141 0x80, 0x00, 0x00, 0x00, /* 0x30 - 0x33 */
142 0x00, 0x00, 0x00, 0x00, /* 0x34 - 0x37 */
143 0x00, 0x00, /* 0x38 - 0x39 */
144 /* Registers 0x3a - 0x3f are reserved */
145 0x00, 0x00, /* 0x3a - 0x3b */
146 0x00, 0x00, 0x00, 0x00, /* 0x3c - 0x3f */
147
148 0x00, 0x00, 0x00, 0x00, /* 0x40 - 0x43 */
149 0x00, 0x80, /* 0x44 - 0x45 */
150 /* Registers 0x46 - 0x47 are reserved */
151 0x80, 0x80, /* 0x46 - 0x47 */
152
153 0x80, 0x00, 0x00, /* 0x48 - 0x4a */
154 /* Registers 0x4b - 0x7c are reserved */
155 0x00, /* 0x4b */
156 0x00, 0x00, 0x00, 0x00, /* 0x4c - 0x4f */
157 0x00, 0x00, 0x00, 0x00, /* 0x50 - 0x53 */
158 0x00, 0x00, 0x00, 0x00, /* 0x54 - 0x57 */
159 0x00, 0x00, 0x00, 0x00, /* 0x58 - 0x5b */
160 0x00, 0x00, 0x00, 0x00, /* 0x5c - 0x5f */
161 0x00, 0x00, 0x00, 0x00, /* 0x60 - 0x63 */
162 0x00, 0x00, 0x00, 0x00, /* 0x64 - 0x67 */
163 0x00, 0x00, 0x00, 0x00, /* 0x68 - 0x6b */
164 0x00, 0x00, 0x00, 0x00, /* 0x6c - 0x6f */
165 0x00, 0x00, 0x00, 0x00, /* 0x70 - 0x73 */
166 0x00, 0x00, 0x00, 0x00, /* 0x74 - 0x77 */
167 0x00, 0x00, 0x00, 0x00, /* 0x78 - 0x7b */
168 0x00, /* 0x7c */
169
170 0xda, 0x33, 0x03, /* 0x7d - 0x7f */
171 };
172
173 /* Register read and write */
174 static inline unsigned int dac33_read_reg_cache(struct snd_soc_codec *codec,
175 unsigned reg)
176 {
177 u8 *cache = codec->reg_cache;
178 if (reg >= DAC33_CACHEREGNUM)
179 return 0;
180
181 return cache[reg];
182 }
183
184 static inline void dac33_write_reg_cache(struct snd_soc_codec *codec,
185 u8 reg, u8 value)
186 {
187 u8 *cache = codec->reg_cache;
188 if (reg >= DAC33_CACHEREGNUM)
189 return;
190
191 cache[reg] = value;
192 }
193
194 static int dac33_read(struct snd_soc_codec *codec, unsigned int reg,
195 u8 *value)
196 {
197 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
198 int val, ret = 0;
199
200 *value = reg & 0xff;
201
202 /* If powered off, return the cached value */
203 if (dac33->chip_power) {
204 val = i2c_smbus_read_byte_data(codec->control_data, value[0]);
205 if (val < 0) {
206 dev_err(codec->dev, "Read failed (%d)\n", val);
207 value[0] = dac33_read_reg_cache(codec, reg);
208 ret = val;
209 } else {
210 value[0] = val;
211 dac33_write_reg_cache(codec, reg, val);
212 }
213 } else {
214 value[0] = dac33_read_reg_cache(codec, reg);
215 }
216
217 return ret;
218 }
219
220 static int dac33_write(struct snd_soc_codec *codec, unsigned int reg,
221 unsigned int value)
222 {
223 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
224 u8 data[2];
225 int ret = 0;
226
227 /*
228 * data is
229 * D15..D8 dac33 register offset
230 * D7...D0 register data
231 */
232 data[0] = reg & 0xff;
233 data[1] = value & 0xff;
234
235 dac33_write_reg_cache(codec, data[0], data[1]);
236 if (dac33->chip_power) {
237 ret = codec->hw_write(codec->control_data, data, 2);
238 if (ret != 2)
239 dev_err(codec->dev, "Write failed (%d)\n", ret);
240 else
241 ret = 0;
242 }
243
244 return ret;
245 }
246
247 static int dac33_write_locked(struct snd_soc_codec *codec, unsigned int reg,
248 unsigned int value)
249 {
250 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
251 int ret;
252
253 mutex_lock(&dac33->mutex);
254 ret = dac33_write(codec, reg, value);
255 mutex_unlock(&dac33->mutex);
256
257 return ret;
258 }
259
260 #define DAC33_I2C_ADDR_AUTOINC 0x80
261 static int dac33_write16(struct snd_soc_codec *codec, unsigned int reg,
262 unsigned int value)
263 {
264 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
265 u8 data[3];
266 int ret = 0;
267
268 /*
269 * data is
270 * D23..D16 dac33 register offset
271 * D15..D8 register data MSB
272 * D7...D0 register data LSB
273 */
274 data[0] = reg & 0xff;
275 data[1] = (value >> 8) & 0xff;
276 data[2] = value & 0xff;
277
278 dac33_write_reg_cache(codec, data[0], data[1]);
279 dac33_write_reg_cache(codec, data[0] + 1, data[2]);
280
281 if (dac33->chip_power) {
282 /* We need to set autoincrement mode for 16 bit writes */
283 data[0] |= DAC33_I2C_ADDR_AUTOINC;
284 ret = codec->hw_write(codec->control_data, data, 3);
285 if (ret != 3)
286 dev_err(codec->dev, "Write failed (%d)\n", ret);
287 else
288 ret = 0;
289 }
290
291 return ret;
292 }
293
294 static void dac33_init_chip(struct snd_soc_codec *codec)
295 {
296 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
297
298 if (unlikely(!dac33->chip_power))
299 return;
300
301 /* A : DAC sample rate Fsref/1.5 */
302 dac33_write(codec, DAC33_DAC_CTRL_A, DAC33_DACRATE(0));
303 /* B : DAC src=normal, not muted */
304 dac33_write(codec, DAC33_DAC_CTRL_B, DAC33_DACSRCR_RIGHT |
305 DAC33_DACSRCL_LEFT);
306 /* C : (defaults) */
307 dac33_write(codec, DAC33_DAC_CTRL_C, 0x00);
308
309 /* 73 : volume soft stepping control,
310 clock source = internal osc (?) */
311 dac33_write(codec, DAC33_ANA_VOL_SOFT_STEP_CTRL, DAC33_VOLCLKEN);
312
313 /* Restore only selected registers (gains mostly) */
314 dac33_write(codec, DAC33_LDAC_DIG_VOL_CTRL,
315 dac33_read_reg_cache(codec, DAC33_LDAC_DIG_VOL_CTRL));
316 dac33_write(codec, DAC33_RDAC_DIG_VOL_CTRL,
317 dac33_read_reg_cache(codec, DAC33_RDAC_DIG_VOL_CTRL));
318
319 dac33_write(codec, DAC33_LINEL_TO_LLO_VOL,
320 dac33_read_reg_cache(codec, DAC33_LINEL_TO_LLO_VOL));
321 dac33_write(codec, DAC33_LINER_TO_RLO_VOL,
322 dac33_read_reg_cache(codec, DAC33_LINER_TO_RLO_VOL));
323
324 dac33_write(codec, DAC33_OUT_AMP_CTRL,
325 dac33_read_reg_cache(codec, DAC33_OUT_AMP_CTRL));
326
327 dac33_write(codec, DAC33_LDAC_PWR_CTRL,
328 dac33_read_reg_cache(codec, DAC33_LDAC_PWR_CTRL));
329 dac33_write(codec, DAC33_RDAC_PWR_CTRL,
330 dac33_read_reg_cache(codec, DAC33_RDAC_PWR_CTRL));
331 }
332
333 static inline int dac33_read_id(struct snd_soc_codec *codec)
334 {
335 int i, ret = 0;
336 u8 reg;
337
338 for (i = 0; i < 3; i++) {
339 ret = dac33_read(codec, DAC33_DEVICE_ID_MSB + i, &reg);
340 if (ret < 0)
341 break;
342 }
343
344 return ret;
345 }
346
347 static inline void dac33_soft_power(struct snd_soc_codec *codec, int power)
348 {
349 u8 reg;
350
351 reg = dac33_read_reg_cache(codec, DAC33_PWR_CTRL);
352 if (power)
353 reg |= DAC33_PDNALLB;
354 else
355 reg &= ~(DAC33_PDNALLB | DAC33_OSCPDNB |
356 DAC33_DACRPDNB | DAC33_DACLPDNB);
357 dac33_write(codec, DAC33_PWR_CTRL, reg);
358 }
359
360 static inline void dac33_disable_digital(struct snd_soc_codec *codec)
361 {
362 u8 reg;
363
364 /* Stop the DAI clock */
365 reg = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_B);
366 reg &= ~DAC33_BCLKON;
367 dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_B, reg);
368
369 /* Power down the Oscillator, and DACs */
370 reg = dac33_read_reg_cache(codec, DAC33_PWR_CTRL);
371 reg &= ~(DAC33_OSCPDNB | DAC33_DACRPDNB | DAC33_DACLPDNB);
372 dac33_write(codec, DAC33_PWR_CTRL, reg);
373 }
374
375 static int dac33_hard_power(struct snd_soc_codec *codec, int power)
376 {
377 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
378 int ret = 0;
379
380 mutex_lock(&dac33->mutex);
381
382 /* Safety check */
383 if (unlikely(power == dac33->chip_power)) {
384 dev_dbg(codec->dev, "Trying to set the same power state: %s\n",
385 power ? "ON" : "OFF");
386 goto exit;
387 }
388
389 if (power) {
390 ret = regulator_bulk_enable(ARRAY_SIZE(dac33->supplies),
391 dac33->supplies);
392 if (ret != 0) {
393 dev_err(codec->dev,
394 "Failed to enable supplies: %d\n", ret);
395 goto exit;
396 }
397
398 if (dac33->power_gpio >= 0)
399 gpio_set_value(dac33->power_gpio, 1);
400
401 dac33->chip_power = 1;
402 } else {
403 dac33_soft_power(codec, 0);
404 if (dac33->power_gpio >= 0)
405 gpio_set_value(dac33->power_gpio, 0);
406
407 ret = regulator_bulk_disable(ARRAY_SIZE(dac33->supplies),
408 dac33->supplies);
409 if (ret != 0) {
410 dev_err(codec->dev,
411 "Failed to disable supplies: %d\n", ret);
412 goto exit;
413 }
414
415 dac33->chip_power = 0;
416 }
417
418 exit:
419 mutex_unlock(&dac33->mutex);
420 return ret;
421 }
422
423 static int dac33_playback_event(struct snd_soc_dapm_widget *w,
424 struct snd_kcontrol *kcontrol, int event)
425 {
426 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(w->codec);
427
428 switch (event) {
429 case SND_SOC_DAPM_PRE_PMU:
430 if (likely(dac33->substream)) {
431 dac33_calculate_times(dac33->substream);
432 dac33_prepare_chip(dac33->substream);
433 }
434 break;
435 case SND_SOC_DAPM_POST_PMD:
436 dac33_disable_digital(w->codec);
437 break;
438 }
439 return 0;
440 }
441
442 static int dac33_get_fifo_mode(struct snd_kcontrol *kcontrol,
443 struct snd_ctl_elem_value *ucontrol)
444 {
445 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
446 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
447
448 ucontrol->value.integer.value[0] = dac33->fifo_mode;
449
450 return 0;
451 }
452
453 static int dac33_set_fifo_mode(struct snd_kcontrol *kcontrol,
454 struct snd_ctl_elem_value *ucontrol)
455 {
456 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
457 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
458 int ret = 0;
459
460 if (dac33->fifo_mode == ucontrol->value.integer.value[0])
461 return 0;
462 /* Do not allow changes while stream is running*/
463 if (codec->active)
464 return -EPERM;
465
466 if (ucontrol->value.integer.value[0] < 0 ||
467 ucontrol->value.integer.value[0] >= DAC33_FIFO_LAST_MODE)
468 ret = -EINVAL;
469 else
470 dac33->fifo_mode = ucontrol->value.integer.value[0];
471
472 return ret;
473 }
474
475 /* Codec operation modes */
476 static const char *dac33_fifo_mode_texts[] = {
477 "Bypass", "Mode 1", "Mode 7"
478 };
479
480 static const struct soc_enum dac33_fifo_mode_enum =
481 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(dac33_fifo_mode_texts),
482 dac33_fifo_mode_texts);
483
484 /* L/R Line Output Gain */
485 static const char *lr_lineout_gain_texts[] = {
486 "Line -12dB DAC 0dB", "Line -6dB DAC 6dB",
487 "Line 0dB DAC 12dB", "Line 6dB DAC 18dB",
488 };
489
490 static const struct soc_enum l_lineout_gain_enum =
491 SOC_ENUM_SINGLE(DAC33_LDAC_PWR_CTRL, 0,
492 ARRAY_SIZE(lr_lineout_gain_texts),
493 lr_lineout_gain_texts);
494
495 static const struct soc_enum r_lineout_gain_enum =
496 SOC_ENUM_SINGLE(DAC33_RDAC_PWR_CTRL, 0,
497 ARRAY_SIZE(lr_lineout_gain_texts),
498 lr_lineout_gain_texts);
499
500 /*
501 * DACL/R digital volume control:
502 * from 0 dB to -63.5 in 0.5 dB steps
503 * Need to be inverted later on:
504 * 0x00 == 0 dB
505 * 0x7f == -63.5 dB
506 */
507 static DECLARE_TLV_DB_SCALE(dac_digivol_tlv, -6350, 50, 0);
508
509 static const struct snd_kcontrol_new dac33_snd_controls[] = {
510 SOC_DOUBLE_R_TLV("DAC Digital Playback Volume",
511 DAC33_LDAC_DIG_VOL_CTRL, DAC33_RDAC_DIG_VOL_CTRL,
512 0, 0x7f, 1, dac_digivol_tlv),
513 SOC_DOUBLE_R("DAC Digital Playback Switch",
514 DAC33_LDAC_DIG_VOL_CTRL, DAC33_RDAC_DIG_VOL_CTRL, 7, 1, 1),
515 SOC_DOUBLE_R("Line to Line Out Volume",
516 DAC33_LINEL_TO_LLO_VOL, DAC33_LINER_TO_RLO_VOL, 0, 127, 1),
517 SOC_ENUM("Left Line Output Gain", l_lineout_gain_enum),
518 SOC_ENUM("Right Line Output Gain", r_lineout_gain_enum),
519 };
520
521 static const struct snd_kcontrol_new dac33_mode_snd_controls[] = {
522 SOC_ENUM_EXT("FIFO Mode", dac33_fifo_mode_enum,
523 dac33_get_fifo_mode, dac33_set_fifo_mode),
524 };
525
526 /* Analog bypass */
527 static const struct snd_kcontrol_new dac33_dapm_abypassl_control =
528 SOC_DAPM_SINGLE("Switch", DAC33_LINEL_TO_LLO_VOL, 7, 1, 1);
529
530 static const struct snd_kcontrol_new dac33_dapm_abypassr_control =
531 SOC_DAPM_SINGLE("Switch", DAC33_LINER_TO_RLO_VOL, 7, 1, 1);
532
533 /* LOP L/R invert selection */
534 static const char *dac33_lr_lom_texts[] = {"DAC", "LOP"};
535
536 static const struct soc_enum dac33_left_lom_enum =
537 SOC_ENUM_SINGLE(DAC33_OUT_AMP_CTRL, 3,
538 ARRAY_SIZE(dac33_lr_lom_texts),
539 dac33_lr_lom_texts);
540
541 static const struct snd_kcontrol_new dac33_dapm_left_lom_control =
542 SOC_DAPM_ENUM("Route", dac33_left_lom_enum);
543
544 static const struct soc_enum dac33_right_lom_enum =
545 SOC_ENUM_SINGLE(DAC33_OUT_AMP_CTRL, 2,
546 ARRAY_SIZE(dac33_lr_lom_texts),
547 dac33_lr_lom_texts);
548
549 static const struct snd_kcontrol_new dac33_dapm_right_lom_control =
550 SOC_DAPM_ENUM("Route", dac33_right_lom_enum);
551
552 static const struct snd_soc_dapm_widget dac33_dapm_widgets[] = {
553 SND_SOC_DAPM_OUTPUT("LEFT_LO"),
554 SND_SOC_DAPM_OUTPUT("RIGHT_LO"),
555
556 SND_SOC_DAPM_INPUT("LINEL"),
557 SND_SOC_DAPM_INPUT("LINER"),
558
559 SND_SOC_DAPM_DAC("DACL", "Left Playback", SND_SOC_NOPM, 0, 0),
560 SND_SOC_DAPM_DAC("DACR", "Right Playback", SND_SOC_NOPM, 0, 0),
561
562 /* Analog bypass */
563 SND_SOC_DAPM_SWITCH("Analog Left Bypass", SND_SOC_NOPM, 0, 0,
564 &dac33_dapm_abypassl_control),
565 SND_SOC_DAPM_SWITCH("Analog Right Bypass", SND_SOC_NOPM, 0, 0,
566 &dac33_dapm_abypassr_control),
567
568 SND_SOC_DAPM_MUX("Left LOM Inverted From", SND_SOC_NOPM, 0, 0,
569 &dac33_dapm_left_lom_control),
570 SND_SOC_DAPM_MUX("Right LOM Inverted From", SND_SOC_NOPM, 0, 0,
571 &dac33_dapm_right_lom_control),
572 /*
573 * For DAPM path, when only the anlog bypass path is enabled, and the
574 * LOP inverted from the corresponding DAC side.
575 * This is needed, so we can attach the DAC power supply in this case.
576 */
577 SND_SOC_DAPM_PGA("Left Bypass PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
578 SND_SOC_DAPM_PGA("Right Bypass PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
579
580 SND_SOC_DAPM_REG(snd_soc_dapm_mixer, "Output Left Amplifier",
581 DAC33_OUT_AMP_PWR_CTRL, 6, 3, 3, 0),
582 SND_SOC_DAPM_REG(snd_soc_dapm_mixer, "Output Right Amplifier",
583 DAC33_OUT_AMP_PWR_CTRL, 4, 3, 3, 0),
584
585 SND_SOC_DAPM_SUPPLY("Left DAC Power",
586 DAC33_LDAC_PWR_CTRL, 2, 0, NULL, 0),
587 SND_SOC_DAPM_SUPPLY("Right DAC Power",
588 DAC33_RDAC_PWR_CTRL, 2, 0, NULL, 0),
589
590 SND_SOC_DAPM_SUPPLY("Codec Power",
591 DAC33_PWR_CTRL, 4, 0, NULL, 0),
592
593 SND_SOC_DAPM_PRE("Pre Playback", dac33_playback_event),
594 SND_SOC_DAPM_POST("Post Playback", dac33_playback_event),
595 };
596
597 static const struct snd_soc_dapm_route audio_map[] = {
598 /* Analog bypass */
599 {"Analog Left Bypass", "Switch", "LINEL"},
600 {"Analog Right Bypass", "Switch", "LINER"},
601
602 {"Output Left Amplifier", NULL, "DACL"},
603 {"Output Right Amplifier", NULL, "DACR"},
604
605 {"Left Bypass PGA", NULL, "Analog Left Bypass"},
606 {"Right Bypass PGA", NULL, "Analog Right Bypass"},
607
608 {"Left LOM Inverted From", "DAC", "Left Bypass PGA"},
609 {"Right LOM Inverted From", "DAC", "Right Bypass PGA"},
610 {"Left LOM Inverted From", "LOP", "Analog Left Bypass"},
611 {"Right LOM Inverted From", "LOP", "Analog Right Bypass"},
612
613 {"Output Left Amplifier", NULL, "Left LOM Inverted From"},
614 {"Output Right Amplifier", NULL, "Right LOM Inverted From"},
615
616 {"DACL", NULL, "Left DAC Power"},
617 {"DACR", NULL, "Right DAC Power"},
618
619 {"Left Bypass PGA", NULL, "Left DAC Power"},
620 {"Right Bypass PGA", NULL, "Right DAC Power"},
621
622 /* output */
623 {"LEFT_LO", NULL, "Output Left Amplifier"},
624 {"RIGHT_LO", NULL, "Output Right Amplifier"},
625
626 {"LEFT_LO", NULL, "Codec Power"},
627 {"RIGHT_LO", NULL, "Codec Power"},
628 };
629
630 static int dac33_set_bias_level(struct snd_soc_codec *codec,
631 enum snd_soc_bias_level level)
632 {
633 int ret;
634
635 switch (level) {
636 case SND_SOC_BIAS_ON:
637 break;
638 case SND_SOC_BIAS_PREPARE:
639 break;
640 case SND_SOC_BIAS_STANDBY:
641 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
642 /* Coming from OFF, switch on the codec */
643 ret = dac33_hard_power(codec, 1);
644 if (ret != 0)
645 return ret;
646
647 dac33_init_chip(codec);
648 }
649 break;
650 case SND_SOC_BIAS_OFF:
651 /* Do not power off, when the codec is already off */
652 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
653 return 0;
654 ret = dac33_hard_power(codec, 0);
655 if (ret != 0)
656 return ret;
657 break;
658 }
659 codec->dapm.bias_level = level;
660
661 return 0;
662 }
663
664 static inline void dac33_prefill_handler(struct tlv320dac33_priv *dac33)
665 {
666 struct snd_soc_codec *codec = dac33->codec;
667 unsigned int delay;
668 unsigned long flags;
669
670 switch (dac33->fifo_mode) {
671 case DAC33_FIFO_MODE1:
672 dac33_write16(codec, DAC33_NSAMPLE_MSB,
673 DAC33_THRREG(dac33->nsample));
674
675 /* Take the timestamps */
676 spin_lock_irqsave(&dac33->lock, flags);
677 dac33->t_stamp2 = ktime_to_us(ktime_get());
678 dac33->t_stamp1 = dac33->t_stamp2;
679 spin_unlock_irqrestore(&dac33->lock, flags);
680
681 dac33_write16(codec, DAC33_PREFILL_MSB,
682 DAC33_THRREG(dac33->alarm_threshold));
683 /* Enable Alarm Threshold IRQ with a delay */
684 delay = SAMPLES_TO_US(dac33->burst_rate,
685 dac33->alarm_threshold) + 1000;
686 usleep_range(delay, delay + 500);
687 dac33_write(codec, DAC33_FIFO_IRQ_MASK, DAC33_MAT);
688 break;
689 case DAC33_FIFO_MODE7:
690 /* Take the timestamp */
691 spin_lock_irqsave(&dac33->lock, flags);
692 dac33->t_stamp1 = ktime_to_us(ktime_get());
693 /* Move back the timestamp with drain time */
694 dac33->t_stamp1 -= dac33->mode7_us_to_lthr;
695 spin_unlock_irqrestore(&dac33->lock, flags);
696
697 dac33_write16(codec, DAC33_PREFILL_MSB,
698 DAC33_THRREG(DAC33_MODE7_MARGIN));
699
700 /* Enable Upper Threshold IRQ */
701 dac33_write(codec, DAC33_FIFO_IRQ_MASK, DAC33_MUT);
702 break;
703 default:
704 dev_warn(codec->dev, "Unhandled FIFO mode: %d\n",
705 dac33->fifo_mode);
706 break;
707 }
708 }
709
710 static inline void dac33_playback_handler(struct tlv320dac33_priv *dac33)
711 {
712 struct snd_soc_codec *codec = dac33->codec;
713 unsigned long flags;
714
715 switch (dac33->fifo_mode) {
716 case DAC33_FIFO_MODE1:
717 /* Take the timestamp */
718 spin_lock_irqsave(&dac33->lock, flags);
719 dac33->t_stamp2 = ktime_to_us(ktime_get());
720 spin_unlock_irqrestore(&dac33->lock, flags);
721
722 dac33_write16(codec, DAC33_NSAMPLE_MSB,
723 DAC33_THRREG(dac33->nsample));
724 break;
725 case DAC33_FIFO_MODE7:
726 /* At the moment we are not using interrupts in mode7 */
727 break;
728 default:
729 dev_warn(codec->dev, "Unhandled FIFO mode: %d\n",
730 dac33->fifo_mode);
731 break;
732 }
733 }
734
735 static void dac33_work(struct work_struct *work)
736 {
737 struct snd_soc_codec *codec;
738 struct tlv320dac33_priv *dac33;
739 u8 reg;
740
741 dac33 = container_of(work, struct tlv320dac33_priv, work);
742 codec = dac33->codec;
743
744 mutex_lock(&dac33->mutex);
745 switch (dac33->state) {
746 case DAC33_PREFILL:
747 dac33->state = DAC33_PLAYBACK;
748 dac33_prefill_handler(dac33);
749 break;
750 case DAC33_PLAYBACK:
751 dac33_playback_handler(dac33);
752 break;
753 case DAC33_IDLE:
754 break;
755 case DAC33_FLUSH:
756 dac33->state = DAC33_IDLE;
757 /* Mask all interrupts from dac33 */
758 dac33_write(codec, DAC33_FIFO_IRQ_MASK, 0);
759
760 /* flush fifo */
761 reg = dac33_read_reg_cache(codec, DAC33_FIFO_CTRL_A);
762 reg |= DAC33_FIFOFLUSH;
763 dac33_write(codec, DAC33_FIFO_CTRL_A, reg);
764 break;
765 }
766 mutex_unlock(&dac33->mutex);
767 }
768
769 static irqreturn_t dac33_interrupt_handler(int irq, void *dev)
770 {
771 struct snd_soc_codec *codec = dev;
772 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
773 unsigned long flags;
774
775 spin_lock_irqsave(&dac33->lock, flags);
776 dac33->t_stamp1 = ktime_to_us(ktime_get());
777 spin_unlock_irqrestore(&dac33->lock, flags);
778
779 /* Do not schedule the workqueue in Mode7 */
780 if (dac33->fifo_mode != DAC33_FIFO_MODE7)
781 queue_work(dac33->dac33_wq, &dac33->work);
782
783 return IRQ_HANDLED;
784 }
785
786 static void dac33_oscwait(struct snd_soc_codec *codec)
787 {
788 int timeout = 60;
789 u8 reg;
790
791 do {
792 usleep_range(1000, 2000);
793 dac33_read(codec, DAC33_INT_OSC_STATUS, &reg);
794 } while (((reg & 0x03) != DAC33_OSCSTATUS_NORMAL) && timeout--);
795 if ((reg & 0x03) != DAC33_OSCSTATUS_NORMAL)
796 dev_err(codec->dev,
797 "internal oscillator calibration failed\n");
798 }
799
800 static int dac33_startup(struct snd_pcm_substream *substream,
801 struct snd_soc_dai *dai)
802 {
803 struct snd_soc_pcm_runtime *rtd = substream->private_data;
804 struct snd_soc_codec *codec = rtd->codec;
805 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
806
807 /* Stream started, save the substream pointer */
808 dac33->substream = substream;
809
810 snd_pcm_hw_constraint_msbits(substream->runtime, 0, 32, 24);
811
812 return 0;
813 }
814
815 static void dac33_shutdown(struct snd_pcm_substream *substream,
816 struct snd_soc_dai *dai)
817 {
818 struct snd_soc_pcm_runtime *rtd = substream->private_data;
819 struct snd_soc_codec *codec = rtd->codec;
820 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
821
822 dac33->substream = NULL;
823 }
824
825 #define CALC_BURST_RATE(bclkdiv, bclk_per_sample) \
826 (BURST_BASEFREQ_HZ / bclkdiv / bclk_per_sample)
827 static int dac33_hw_params(struct snd_pcm_substream *substream,
828 struct snd_pcm_hw_params *params,
829 struct snd_soc_dai *dai)
830 {
831 struct snd_soc_pcm_runtime *rtd = substream->private_data;
832 struct snd_soc_codec *codec = rtd->codec;
833 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
834
835 /* Check parameters for validity */
836 switch (params_rate(params)) {
837 case 44100:
838 case 48000:
839 break;
840 default:
841 dev_err(codec->dev, "unsupported rate %d\n",
842 params_rate(params));
843 return -EINVAL;
844 }
845
846 switch (params_format(params)) {
847 case SNDRV_PCM_FORMAT_S16_LE:
848 dac33->fifo_size = DAC33_FIFO_SIZE_16BIT;
849 dac33->burst_rate = CALC_BURST_RATE(dac33->burst_bclkdiv, 32);
850 break;
851 case SNDRV_PCM_FORMAT_S32_LE:
852 dac33->fifo_size = DAC33_FIFO_SIZE_24BIT;
853 dac33->burst_rate = CALC_BURST_RATE(dac33->burst_bclkdiv, 64);
854 break;
855 default:
856 dev_err(codec->dev, "unsupported format %d\n",
857 params_format(params));
858 return -EINVAL;
859 }
860
861 return 0;
862 }
863
864 #define CALC_OSCSET(rate, refclk) ( \
865 ((((rate * 10000) / refclk) * 4096) + 7000) / 10000)
866 #define CALC_RATIOSET(rate, refclk) ( \
867 ((((refclk * 100000) / rate) * 16384) + 50000) / 100000)
868
869 /*
870 * tlv320dac33 is strict on the sequence of the register writes, if the register
871 * writes happens in different order, than dac33 might end up in unknown state.
872 * Use the known, working sequence of register writes to initialize the dac33.
873 */
874 static int dac33_prepare_chip(struct snd_pcm_substream *substream)
875 {
876 struct snd_soc_pcm_runtime *rtd = substream->private_data;
877 struct snd_soc_codec *codec = rtd->codec;
878 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
879 unsigned int oscset, ratioset, pwr_ctrl, reg_tmp;
880 u8 aictrl_a, aictrl_b, fifoctrl_a;
881
882 switch (substream->runtime->rate) {
883 case 44100:
884 case 48000:
885 oscset = CALC_OSCSET(substream->runtime->rate, dac33->refclk);
886 ratioset = CALC_RATIOSET(substream->runtime->rate,
887 dac33->refclk);
888 break;
889 default:
890 dev_err(codec->dev, "unsupported rate %d\n",
891 substream->runtime->rate);
892 return -EINVAL;
893 }
894
895
896 aictrl_a = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_A);
897 aictrl_a &= ~(DAC33_NCYCL_MASK | DAC33_WLEN_MASK);
898 /* Read FIFO control A, and clear FIFO flush bit */
899 fifoctrl_a = dac33_read_reg_cache(codec, DAC33_FIFO_CTRL_A);
900 fifoctrl_a &= ~DAC33_FIFOFLUSH;
901
902 fifoctrl_a &= ~DAC33_WIDTH;
903 switch (substream->runtime->format) {
904 case SNDRV_PCM_FORMAT_S16_LE:
905 aictrl_a |= (DAC33_NCYCL_16 | DAC33_WLEN_16);
906 fifoctrl_a |= DAC33_WIDTH;
907 break;
908 case SNDRV_PCM_FORMAT_S32_LE:
909 aictrl_a |= (DAC33_NCYCL_32 | DAC33_WLEN_24);
910 break;
911 default:
912 dev_err(codec->dev, "unsupported format %d\n",
913 substream->runtime->format);
914 return -EINVAL;
915 }
916
917 mutex_lock(&dac33->mutex);
918
919 if (!dac33->chip_power) {
920 /*
921 * Chip is not powered yet.
922 * Do the init in the dac33_set_bias_level later.
923 */
924 mutex_unlock(&dac33->mutex);
925 return 0;
926 }
927
928 dac33_soft_power(codec, 0);
929 dac33_soft_power(codec, 1);
930
931 reg_tmp = dac33_read_reg_cache(codec, DAC33_INT_OSC_CTRL);
932 dac33_write(codec, DAC33_INT_OSC_CTRL, reg_tmp);
933
934 /* Write registers 0x08 and 0x09 (MSB, LSB) */
935 dac33_write16(codec, DAC33_INT_OSC_FREQ_RAT_A, oscset);
936
937 /* OSC calibration time */
938 dac33_write(codec, DAC33_CALIB_TIME, 96);
939
940 /* adjustment treshold & step */
941 dac33_write(codec, DAC33_INT_OSC_CTRL_B, DAC33_ADJTHRSHLD(2) |
942 DAC33_ADJSTEP(1));
943
944 /* div=4 / gain=1 / div */
945 dac33_write(codec, DAC33_INT_OSC_CTRL_C, DAC33_REFDIV(4));
946
947 pwr_ctrl = dac33_read_reg_cache(codec, DAC33_PWR_CTRL);
948 pwr_ctrl |= DAC33_OSCPDNB | DAC33_DACRPDNB | DAC33_DACLPDNB;
949 dac33_write(codec, DAC33_PWR_CTRL, pwr_ctrl);
950
951 dac33_oscwait(codec);
952
953 if (dac33->fifo_mode) {
954 /* Generic for all FIFO modes */
955 /* 50-51 : ASRC Control registers */
956 dac33_write(codec, DAC33_ASRC_CTRL_A, DAC33_SRCLKDIV(1));
957 dac33_write(codec, DAC33_ASRC_CTRL_B, 1); /* ??? */
958
959 /* Write registers 0x34 and 0x35 (MSB, LSB) */
960 dac33_write16(codec, DAC33_SRC_REF_CLK_RATIO_A, ratioset);
961
962 /* Set interrupts to high active */
963 dac33_write(codec, DAC33_INTP_CTRL_A, DAC33_INTPM_AHIGH);
964 } else {
965 /* FIFO bypass mode */
966 /* 50-51 : ASRC Control registers */
967 dac33_write(codec, DAC33_ASRC_CTRL_A, DAC33_SRCBYP);
968 dac33_write(codec, DAC33_ASRC_CTRL_B, 0); /* ??? */
969 }
970
971 /* Interrupt behaviour configuration */
972 switch (dac33->fifo_mode) {
973 case DAC33_FIFO_MODE1:
974 dac33_write(codec, DAC33_FIFO_IRQ_MODE_B,
975 DAC33_ATM(DAC33_FIFO_IRQ_MODE_LEVEL));
976 break;
977 case DAC33_FIFO_MODE7:
978 dac33_write(codec, DAC33_FIFO_IRQ_MODE_A,
979 DAC33_UTM(DAC33_FIFO_IRQ_MODE_LEVEL));
980 break;
981 default:
982 /* in FIFO bypass mode, the interrupts are not used */
983 break;
984 }
985
986 aictrl_b = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_B);
987
988 switch (dac33->fifo_mode) {
989 case DAC33_FIFO_MODE1:
990 /*
991 * For mode1:
992 * Disable the FIFO bypass (Enable the use of FIFO)
993 * Select nSample mode
994 * BCLK is only running when data is needed by DAC33
995 */
996 fifoctrl_a &= ~DAC33_FBYPAS;
997 fifoctrl_a &= ~DAC33_FAUTO;
998 if (dac33->keep_bclk)
999 aictrl_b |= DAC33_BCLKON;
1000 else
1001 aictrl_b &= ~DAC33_BCLKON;
1002 break;
1003 case DAC33_FIFO_MODE7:
1004 /*
1005 * For mode1:
1006 * Disable the FIFO bypass (Enable the use of FIFO)
1007 * Select Threshold mode
1008 * BCLK is only running when data is needed by DAC33
1009 */
1010 fifoctrl_a &= ~DAC33_FBYPAS;
1011 fifoctrl_a |= DAC33_FAUTO;
1012 if (dac33->keep_bclk)
1013 aictrl_b |= DAC33_BCLKON;
1014 else
1015 aictrl_b &= ~DAC33_BCLKON;
1016 break;
1017 default:
1018 /*
1019 * For FIFO bypass mode:
1020 * Enable the FIFO bypass (Disable the FIFO use)
1021 * Set the BCLK as continuous
1022 */
1023 fifoctrl_a |= DAC33_FBYPAS;
1024 aictrl_b |= DAC33_BCLKON;
1025 break;
1026 }
1027
1028 dac33_write(codec, DAC33_FIFO_CTRL_A, fifoctrl_a);
1029 dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_A, aictrl_a);
1030 dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_B, aictrl_b);
1031
1032 /*
1033 * BCLK divide ratio
1034 * 0: 1.5
1035 * 1: 1
1036 * 2: 2
1037 * ...
1038 * 254: 254
1039 * 255: 255
1040 */
1041 if (dac33->fifo_mode)
1042 dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_C,
1043 dac33->burst_bclkdiv);
1044 else
1045 if (substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE)
1046 dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_C, 32);
1047 else
1048 dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_C, 16);
1049
1050 switch (dac33->fifo_mode) {
1051 case DAC33_FIFO_MODE1:
1052 dac33_write16(codec, DAC33_ATHR_MSB,
1053 DAC33_THRREG(dac33->alarm_threshold));
1054 break;
1055 case DAC33_FIFO_MODE7:
1056 /*
1057 * Configure the threshold levels, and leave 10 sample space
1058 * at the bottom, and also at the top of the FIFO
1059 */
1060 dac33_write16(codec, DAC33_UTHR_MSB, DAC33_THRREG(dac33->uthr));
1061 dac33_write16(codec, DAC33_LTHR_MSB,
1062 DAC33_THRREG(DAC33_MODE7_MARGIN));
1063 break;
1064 default:
1065 break;
1066 }
1067
1068 mutex_unlock(&dac33->mutex);
1069
1070 return 0;
1071 }
1072
1073 static void dac33_calculate_times(struct snd_pcm_substream *substream)
1074 {
1075 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1076 struct snd_soc_codec *codec = rtd->codec;
1077 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
1078 unsigned int period_size = substream->runtime->period_size;
1079 unsigned int rate = substream->runtime->rate;
1080 unsigned int nsample_limit;
1081
1082 /* In bypass mode we don't need to calculate */
1083 if (!dac33->fifo_mode)
1084 return;
1085
1086 switch (dac33->fifo_mode) {
1087 case DAC33_FIFO_MODE1:
1088 /* Number of samples under i2c latency */
1089 dac33->alarm_threshold = US_TO_SAMPLES(rate,
1090 dac33->mode1_latency);
1091 nsample_limit = dac33->fifo_size - dac33->alarm_threshold;
1092
1093 if (period_size <= dac33->alarm_threshold)
1094 /*
1095 * Configure nSamaple to number of periods,
1096 * which covers the latency requironment.
1097 */
1098 dac33->nsample = period_size *
1099 ((dac33->alarm_threshold / period_size) +
1100 (dac33->alarm_threshold % period_size ?
1101 1 : 0));
1102 else if (period_size > nsample_limit)
1103 dac33->nsample = nsample_limit;
1104 else
1105 dac33->nsample = period_size;
1106
1107 dac33->mode1_us_burst = SAMPLES_TO_US(dac33->burst_rate,
1108 dac33->nsample);
1109 dac33->t_stamp1 = 0;
1110 dac33->t_stamp2 = 0;
1111 break;
1112 case DAC33_FIFO_MODE7:
1113 dac33->uthr = UTHR_FROM_PERIOD_SIZE(period_size, rate,
1114 dac33->burst_rate) + 9;
1115 if (dac33->uthr > (dac33->fifo_size - DAC33_MODE7_MARGIN))
1116 dac33->uthr = dac33->fifo_size - DAC33_MODE7_MARGIN;
1117 if (dac33->uthr < (DAC33_MODE7_MARGIN + 10))
1118 dac33->uthr = (DAC33_MODE7_MARGIN + 10);
1119
1120 dac33->mode7_us_to_lthr =
1121 SAMPLES_TO_US(substream->runtime->rate,
1122 dac33->uthr - DAC33_MODE7_MARGIN + 1);
1123 dac33->t_stamp1 = 0;
1124 break;
1125 default:
1126 break;
1127 }
1128
1129 }
1130
1131 static int dac33_pcm_trigger(struct snd_pcm_substream *substream, int cmd,
1132 struct snd_soc_dai *dai)
1133 {
1134 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1135 struct snd_soc_codec *codec = rtd->codec;
1136 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
1137 int ret = 0;
1138
1139 switch (cmd) {
1140 case SNDRV_PCM_TRIGGER_START:
1141 case SNDRV_PCM_TRIGGER_RESUME:
1142 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1143 if (dac33->fifo_mode) {
1144 dac33->state = DAC33_PREFILL;
1145 queue_work(dac33->dac33_wq, &dac33->work);
1146 }
1147 break;
1148 case SNDRV_PCM_TRIGGER_STOP:
1149 case SNDRV_PCM_TRIGGER_SUSPEND:
1150 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1151 if (dac33->fifo_mode) {
1152 dac33->state = DAC33_FLUSH;
1153 queue_work(dac33->dac33_wq, &dac33->work);
1154 }
1155 break;
1156 default:
1157 ret = -EINVAL;
1158 }
1159
1160 return ret;
1161 }
1162
1163 static snd_pcm_sframes_t dac33_dai_delay(
1164 struct snd_pcm_substream *substream,
1165 struct snd_soc_dai *dai)
1166 {
1167 struct snd_soc_pcm_runtime *rtd = substream->private_data;
1168 struct snd_soc_codec *codec = rtd->codec;
1169 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
1170 unsigned long long t0, t1, t_now;
1171 unsigned int time_delta, uthr;
1172 int samples_out, samples_in, samples;
1173 snd_pcm_sframes_t delay = 0;
1174 unsigned long flags;
1175
1176 switch (dac33->fifo_mode) {
1177 case DAC33_FIFO_BYPASS:
1178 break;
1179 case DAC33_FIFO_MODE1:
1180 spin_lock_irqsave(&dac33->lock, flags);
1181 t0 = dac33->t_stamp1;
1182 t1 = dac33->t_stamp2;
1183 spin_unlock_irqrestore(&dac33->lock, flags);
1184 t_now = ktime_to_us(ktime_get());
1185
1186 /* We have not started to fill the FIFO yet, delay is 0 */
1187 if (!t1)
1188 goto out;
1189
1190 if (t0 > t1) {
1191 /*
1192 * Phase 1:
1193 * After Alarm threshold, and before nSample write
1194 */
1195 time_delta = t_now - t0;
1196 samples_out = time_delta ? US_TO_SAMPLES(
1197 substream->runtime->rate,
1198 time_delta) : 0;
1199
1200 if (likely(dac33->alarm_threshold > samples_out))
1201 delay = dac33->alarm_threshold - samples_out;
1202 else
1203 delay = 0;
1204 } else if ((t_now - t1) <= dac33->mode1_us_burst) {
1205 /*
1206 * Phase 2:
1207 * After nSample write (during burst operation)
1208 */
1209 time_delta = t_now - t0;
1210 samples_out = time_delta ? US_TO_SAMPLES(
1211 substream->runtime->rate,
1212 time_delta) : 0;
1213
1214 time_delta = t_now - t1;
1215 samples_in = time_delta ? US_TO_SAMPLES(
1216 dac33->burst_rate,
1217 time_delta) : 0;
1218
1219 samples = dac33->alarm_threshold;
1220 samples += (samples_in - samples_out);
1221
1222 if (likely(samples > 0))
1223 delay = samples;
1224 else
1225 delay = 0;
1226 } else {
1227 /*
1228 * Phase 3:
1229 * After burst operation, before next alarm threshold
1230 */
1231 time_delta = t_now - t0;
1232 samples_out = time_delta ? US_TO_SAMPLES(
1233 substream->runtime->rate,
1234 time_delta) : 0;
1235
1236 samples_in = dac33->nsample;
1237 samples = dac33->alarm_threshold;
1238 samples += (samples_in - samples_out);
1239
1240 if (likely(samples > 0))
1241 delay = samples > dac33->fifo_size ?
1242 dac33->fifo_size : samples;
1243 else
1244 delay = 0;
1245 }
1246 break;
1247 case DAC33_FIFO_MODE7:
1248 spin_lock_irqsave(&dac33->lock, flags);
1249 t0 = dac33->t_stamp1;
1250 uthr = dac33->uthr;
1251 spin_unlock_irqrestore(&dac33->lock, flags);
1252 t_now = ktime_to_us(ktime_get());
1253
1254 /* We have not started to fill the FIFO yet, delay is 0 */
1255 if (!t0)
1256 goto out;
1257
1258 if (t_now <= t0) {
1259 /*
1260 * Either the timestamps are messed or equal. Report
1261 * maximum delay
1262 */
1263 delay = uthr;
1264 goto out;
1265 }
1266
1267 time_delta = t_now - t0;
1268 if (time_delta <= dac33->mode7_us_to_lthr) {
1269 /*
1270 * Phase 1:
1271 * After burst (draining phase)
1272 */
1273 samples_out = US_TO_SAMPLES(
1274 substream->runtime->rate,
1275 time_delta);
1276
1277 if (likely(uthr > samples_out))
1278 delay = uthr - samples_out;
1279 else
1280 delay = 0;
1281 } else {
1282 /*
1283 * Phase 2:
1284 * During burst operation
1285 */
1286 time_delta = time_delta - dac33->mode7_us_to_lthr;
1287
1288 samples_out = US_TO_SAMPLES(
1289 substream->runtime->rate,
1290 time_delta);
1291 samples_in = US_TO_SAMPLES(
1292 dac33->burst_rate,
1293 time_delta);
1294 delay = DAC33_MODE7_MARGIN + samples_in - samples_out;
1295
1296 if (unlikely(delay > uthr))
1297 delay = uthr;
1298 }
1299 break;
1300 default:
1301 dev_warn(codec->dev, "Unhandled FIFO mode: %d\n",
1302 dac33->fifo_mode);
1303 break;
1304 }
1305 out:
1306 return delay;
1307 }
1308
1309 static int dac33_set_dai_sysclk(struct snd_soc_dai *codec_dai,
1310 int clk_id, unsigned int freq, int dir)
1311 {
1312 struct snd_soc_codec *codec = codec_dai->codec;
1313 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
1314 u8 ioc_reg, asrcb_reg;
1315
1316 ioc_reg = dac33_read_reg_cache(codec, DAC33_INT_OSC_CTRL);
1317 asrcb_reg = dac33_read_reg_cache(codec, DAC33_ASRC_CTRL_B);
1318 switch (clk_id) {
1319 case TLV320DAC33_MCLK:
1320 ioc_reg |= DAC33_REFSEL;
1321 asrcb_reg |= DAC33_SRCREFSEL;
1322 break;
1323 case TLV320DAC33_SLEEPCLK:
1324 ioc_reg &= ~DAC33_REFSEL;
1325 asrcb_reg &= ~DAC33_SRCREFSEL;
1326 break;
1327 default:
1328 dev_err(codec->dev, "Invalid clock ID (%d)\n", clk_id);
1329 break;
1330 }
1331 dac33->refclk = freq;
1332
1333 dac33_write_reg_cache(codec, DAC33_INT_OSC_CTRL, ioc_reg);
1334 dac33_write_reg_cache(codec, DAC33_ASRC_CTRL_B, asrcb_reg);
1335
1336 return 0;
1337 }
1338
1339 static int dac33_set_dai_fmt(struct snd_soc_dai *codec_dai,
1340 unsigned int fmt)
1341 {
1342 struct snd_soc_codec *codec = codec_dai->codec;
1343 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
1344 u8 aictrl_a, aictrl_b;
1345
1346 aictrl_a = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_A);
1347 aictrl_b = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_B);
1348 /* set master/slave audio interface */
1349 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1350 case SND_SOC_DAIFMT_CBM_CFM:
1351 /* Codec Master */
1352 aictrl_a |= (DAC33_MSBCLK | DAC33_MSWCLK);
1353 break;
1354 case SND_SOC_DAIFMT_CBS_CFS:
1355 /* Codec Slave */
1356 if (dac33->fifo_mode) {
1357 dev_err(codec->dev, "FIFO mode requires master mode\n");
1358 return -EINVAL;
1359 } else
1360 aictrl_a &= ~(DAC33_MSBCLK | DAC33_MSWCLK);
1361 break;
1362 default:
1363 return -EINVAL;
1364 }
1365
1366 aictrl_a &= ~DAC33_AFMT_MASK;
1367 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1368 case SND_SOC_DAIFMT_I2S:
1369 aictrl_a |= DAC33_AFMT_I2S;
1370 break;
1371 case SND_SOC_DAIFMT_DSP_A:
1372 aictrl_a |= DAC33_AFMT_DSP;
1373 aictrl_b &= ~DAC33_DATA_DELAY_MASK;
1374 aictrl_b |= DAC33_DATA_DELAY(0);
1375 break;
1376 case SND_SOC_DAIFMT_RIGHT_J:
1377 aictrl_a |= DAC33_AFMT_RIGHT_J;
1378 break;
1379 case SND_SOC_DAIFMT_LEFT_J:
1380 aictrl_a |= DAC33_AFMT_LEFT_J;
1381 break;
1382 default:
1383 dev_err(codec->dev, "Unsupported format (%u)\n",
1384 fmt & SND_SOC_DAIFMT_FORMAT_MASK);
1385 return -EINVAL;
1386 }
1387
1388 dac33_write_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_A, aictrl_a);
1389 dac33_write_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_B, aictrl_b);
1390
1391 return 0;
1392 }
1393
1394 static int dac33_soc_probe(struct snd_soc_codec *codec)
1395 {
1396 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
1397 int ret = 0;
1398
1399 codec->control_data = dac33->control_data;
1400 codec->hw_write = (hw_write_t) i2c_master_send;
1401 codec->dapm.idle_bias_off = 1;
1402 dac33->codec = codec;
1403
1404 /* Read the tlv320dac33 ID registers */
1405 ret = dac33_hard_power(codec, 1);
1406 if (ret != 0) {
1407 dev_err(codec->dev, "Failed to power up codec: %d\n", ret);
1408 goto err_power;
1409 }
1410 ret = dac33_read_id(codec);
1411 dac33_hard_power(codec, 0);
1412
1413 if (ret < 0) {
1414 dev_err(codec->dev, "Failed to read chip ID: %d\n", ret);
1415 ret = -ENODEV;
1416 goto err_power;
1417 }
1418
1419 /* Check if the IRQ number is valid and request it */
1420 if (dac33->irq >= 0) {
1421 ret = request_irq(dac33->irq, dac33_interrupt_handler,
1422 IRQF_TRIGGER_RISING,
1423 codec->name, codec);
1424 if (ret < 0) {
1425 dev_err(codec->dev, "Could not request IRQ%d (%d)\n",
1426 dac33->irq, ret);
1427 dac33->irq = -1;
1428 }
1429 if (dac33->irq != -1) {
1430 /* Setup work queue */
1431 dac33->dac33_wq =
1432 create_singlethread_workqueue("tlv320dac33");
1433 if (dac33->dac33_wq == NULL) {
1434 free_irq(dac33->irq, codec);
1435 return -ENOMEM;
1436 }
1437
1438 INIT_WORK(&dac33->work, dac33_work);
1439 }
1440 }
1441
1442 /* Only add the FIFO controls, if we have valid IRQ number */
1443 if (dac33->irq >= 0)
1444 snd_soc_add_controls(codec, dac33_mode_snd_controls,
1445 ARRAY_SIZE(dac33_mode_snd_controls));
1446
1447 err_power:
1448 return ret;
1449 }
1450
1451 static int dac33_soc_remove(struct snd_soc_codec *codec)
1452 {
1453 struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
1454
1455 dac33_set_bias_level(codec, SND_SOC_BIAS_OFF);
1456
1457 if (dac33->irq >= 0) {
1458 free_irq(dac33->irq, dac33->codec);
1459 destroy_workqueue(dac33->dac33_wq);
1460 }
1461 return 0;
1462 }
1463
1464 static int dac33_soc_suspend(struct snd_soc_codec *codec, pm_message_t state)
1465 {
1466 dac33_set_bias_level(codec, SND_SOC_BIAS_OFF);
1467
1468 return 0;
1469 }
1470
1471 static int dac33_soc_resume(struct snd_soc_codec *codec)
1472 {
1473 dac33_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1474
1475 return 0;
1476 }
1477
1478 static struct snd_soc_codec_driver soc_codec_dev_tlv320dac33 = {
1479 .read = dac33_read_reg_cache,
1480 .write = dac33_write_locked,
1481 .set_bias_level = dac33_set_bias_level,
1482 .reg_cache_size = ARRAY_SIZE(dac33_reg),
1483 .reg_word_size = sizeof(u8),
1484 .reg_cache_default = dac33_reg,
1485 .probe = dac33_soc_probe,
1486 .remove = dac33_soc_remove,
1487 .suspend = dac33_soc_suspend,
1488 .resume = dac33_soc_resume,
1489
1490 .controls = dac33_snd_controls,
1491 .num_controls = ARRAY_SIZE(dac33_snd_controls),
1492 .dapm_widgets = dac33_dapm_widgets,
1493 .num_dapm_widgets = ARRAY_SIZE(dac33_dapm_widgets),
1494 .dapm_routes = audio_map,
1495 .num_dapm_routes = ARRAY_SIZE(audio_map),
1496 };
1497
1498 #define DAC33_RATES (SNDRV_PCM_RATE_44100 | \
1499 SNDRV_PCM_RATE_48000)
1500 #define DAC33_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE)
1501
1502 static struct snd_soc_dai_ops dac33_dai_ops = {
1503 .startup = dac33_startup,
1504 .shutdown = dac33_shutdown,
1505 .hw_params = dac33_hw_params,
1506 .trigger = dac33_pcm_trigger,
1507 .delay = dac33_dai_delay,
1508 .set_sysclk = dac33_set_dai_sysclk,
1509 .set_fmt = dac33_set_dai_fmt,
1510 };
1511
1512 static struct snd_soc_dai_driver dac33_dai = {
1513 .name = "tlv320dac33-hifi",
1514 .playback = {
1515 .stream_name = "Playback",
1516 .channels_min = 2,
1517 .channels_max = 2,
1518 .rates = DAC33_RATES,
1519 .formats = DAC33_FORMATS,},
1520 .ops = &dac33_dai_ops,
1521 };
1522
1523 static int __devinit dac33_i2c_probe(struct i2c_client *client,
1524 const struct i2c_device_id *id)
1525 {
1526 struct tlv320dac33_platform_data *pdata;
1527 struct tlv320dac33_priv *dac33;
1528 int ret, i;
1529
1530 if (client->dev.platform_data == NULL) {
1531 dev_err(&client->dev, "Platform data not set\n");
1532 return -ENODEV;
1533 }
1534 pdata = client->dev.platform_data;
1535
1536 dac33 = kzalloc(sizeof(struct tlv320dac33_priv), GFP_KERNEL);
1537 if (dac33 == NULL)
1538 return -ENOMEM;
1539
1540 dac33->control_data = client;
1541 mutex_init(&dac33->mutex);
1542 spin_lock_init(&dac33->lock);
1543
1544 i2c_set_clientdata(client, dac33);
1545
1546 dac33->power_gpio = pdata->power_gpio;
1547 dac33->burst_bclkdiv = pdata->burst_bclkdiv;
1548 dac33->keep_bclk = pdata->keep_bclk;
1549 dac33->mode1_latency = pdata->mode1_latency;
1550 if (!dac33->mode1_latency)
1551 dac33->mode1_latency = 10000; /* 10ms */
1552 dac33->irq = client->irq;
1553 /* Disable FIFO use by default */
1554 dac33->fifo_mode = DAC33_FIFO_BYPASS;
1555
1556 /* Check if the reset GPIO number is valid and request it */
1557 if (dac33->power_gpio >= 0) {
1558 ret = gpio_request(dac33->power_gpio, "tlv320dac33 reset");
1559 if (ret < 0) {
1560 dev_err(&client->dev,
1561 "Failed to request reset GPIO (%d)\n",
1562 dac33->power_gpio);
1563 goto err_gpio;
1564 }
1565 gpio_direction_output(dac33->power_gpio, 0);
1566 }
1567
1568 for (i = 0; i < ARRAY_SIZE(dac33->supplies); i++)
1569 dac33->supplies[i].supply = dac33_supply_names[i];
1570
1571 ret = regulator_bulk_get(&client->dev, ARRAY_SIZE(dac33->supplies),
1572 dac33->supplies);
1573
1574 if (ret != 0) {
1575 dev_err(&client->dev, "Failed to request supplies: %d\n", ret);
1576 goto err_get;
1577 }
1578
1579 ret = snd_soc_register_codec(&client->dev,
1580 &soc_codec_dev_tlv320dac33, &dac33_dai, 1);
1581 if (ret < 0)
1582 goto err_register;
1583
1584 return ret;
1585 err_register:
1586 regulator_bulk_free(ARRAY_SIZE(dac33->supplies), dac33->supplies);
1587 err_get:
1588 if (dac33->power_gpio >= 0)
1589 gpio_free(dac33->power_gpio);
1590 err_gpio:
1591 kfree(dac33);
1592 return ret;
1593 }
1594
1595 static int __devexit dac33_i2c_remove(struct i2c_client *client)
1596 {
1597 struct tlv320dac33_priv *dac33 = i2c_get_clientdata(client);
1598
1599 if (unlikely(dac33->chip_power))
1600 dac33_hard_power(dac33->codec, 0);
1601
1602 if (dac33->power_gpio >= 0)
1603 gpio_free(dac33->power_gpio);
1604
1605 regulator_bulk_free(ARRAY_SIZE(dac33->supplies), dac33->supplies);
1606
1607 snd_soc_unregister_codec(&client->dev);
1608 kfree(dac33);
1609
1610 return 0;
1611 }
1612
1613 static const struct i2c_device_id tlv320dac33_i2c_id[] = {
1614 {
1615 .name = "tlv320dac33",
1616 .driver_data = 0,
1617 },
1618 { },
1619 };
1620 MODULE_DEVICE_TABLE(i2c, tlv320dac33_i2c_id);
1621
1622 static struct i2c_driver tlv320dac33_i2c_driver = {
1623 .driver = {
1624 .name = "tlv320dac33-codec",
1625 .owner = THIS_MODULE,
1626 },
1627 .probe = dac33_i2c_probe,
1628 .remove = __devexit_p(dac33_i2c_remove),
1629 .id_table = tlv320dac33_i2c_id,
1630 };
1631
1632 static int __init dac33_module_init(void)
1633 {
1634 int r;
1635 r = i2c_add_driver(&tlv320dac33_i2c_driver);
1636 if (r < 0) {
1637 printk(KERN_ERR "DAC33: driver registration failed\n");
1638 return r;
1639 }
1640 return 0;
1641 }
1642 module_init(dac33_module_init);
1643
1644 static void __exit dac33_module_exit(void)
1645 {
1646 i2c_del_driver(&tlv320dac33_i2c_driver);
1647 }
1648 module_exit(dac33_module_exit);
1649
1650
1651 MODULE_DESCRIPTION("ASoC TLV320DAC33 codec driver");
1652 MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
1653 MODULE_LICENSE("GPL");
Linux with added FPC-III support