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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / sound / soc / codecs / tas2552.c
blob56671f21cfe58f30a9671f3293c4e625d0623075
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * tas2552.c - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier
4 *
5 * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
6 *
7 * Author: Dan Murphy <dmurphy@ti.com>
8 */
9
10 #include <linux/module.h>
11 #include <linux/errno.h>
12 #include <linux/device.h>
13 #include <linux/i2c.h>
14 #include <linux/gpio.h>
15 #include <linux/of_gpio.h>
16 #include <linux/pm_runtime.h>
17 #include <linux/regmap.h>
18 #include <linux/slab.h>
19
20 #include <linux/gpio/consumer.h>
21 #include <linux/regulator/consumer.h>
22
23 #include <sound/pcm.h>
24 #include <sound/pcm_params.h>
25 #include <sound/soc.h>
26 #include <sound/soc-dapm.h>
27 #include <sound/tlv.h>
28 #include <sound/tas2552-plat.h>
29 #include <dt-bindings/sound/tas2552.h>
30
31 #include "tas2552.h"
32
33 static const struct reg_default tas2552_reg_defs[] = {
34 {TAS2552_CFG_1, 0x22},
35 {TAS2552_CFG_3, 0x80},
36 {TAS2552_DOUT, 0x00},
37 {TAS2552_OUTPUT_DATA, 0xc0},
38 {TAS2552_PDM_CFG, 0x01},
39 {TAS2552_PGA_GAIN, 0x00},
40 {TAS2552_BOOST_APT_CTRL, 0x0f},
41 {TAS2552_RESERVED_0D, 0xbe},
42 {TAS2552_LIMIT_RATE_HYS, 0x08},
43 {TAS2552_CFG_2, 0xef},
44 {TAS2552_SER_CTRL_1, 0x00},
45 {TAS2552_SER_CTRL_2, 0x00},
46 {TAS2552_PLL_CTRL_1, 0x10},
47 {TAS2552_PLL_CTRL_2, 0x00},
48 {TAS2552_PLL_CTRL_3, 0x00},
49 {TAS2552_BTIP, 0x8f},
50 {TAS2552_BTS_CTRL, 0x80},
51 {TAS2552_LIMIT_RELEASE, 0x04},
52 {TAS2552_LIMIT_INT_COUNT, 0x00},
53 {TAS2552_EDGE_RATE_CTRL, 0x40},
54 {TAS2552_VBAT_DATA, 0x00},
55 };
56
57 #define TAS2552_NUM_SUPPLIES 3
58 static const char *tas2552_supply_names[TAS2552_NUM_SUPPLIES] = {
59 "vbat", /* vbat voltage */
60 "iovdd", /* I/O Voltage */
61 "avdd", /* Analog DAC Voltage */
62 };
63
64 struct tas2552_data {
65 struct snd_soc_component *component;
66 struct regmap *regmap;
67 struct i2c_client *tas2552_client;
68 struct regulator_bulk_data supplies[TAS2552_NUM_SUPPLIES];
69 struct gpio_desc *enable_gpio;
70 unsigned char regs[TAS2552_VBAT_DATA];
71 unsigned int pll_clkin;
72 int pll_clk_id;
73 unsigned int pdm_clk;
74 int pdm_clk_id;
75
76 unsigned int dai_fmt;
77 unsigned int tdm_delay;
78 };
79
80 static int tas2552_post_event(struct snd_soc_dapm_widget *w,
81 struct snd_kcontrol *kcontrol, int event)
82 {
83 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
84
85 switch (event) {
86 case SND_SOC_DAPM_POST_PMU:
87 snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xc0);
88 snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5),
89 (1 << 5));
90 snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 0);
91 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS, 0);
92 break;
93 case SND_SOC_DAPM_POST_PMD:
94 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS,
95 TAS2552_SWS);
96 snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 1);
97 snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5), 0);
98 snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xbe);
99 break;
100 }
101 return 0;
102 }
103
104 /* Input mux controls */
105 static const char * const tas2552_input_texts[] = {
106 "Digital", "Analog" };
107 static SOC_ENUM_SINGLE_DECL(tas2552_input_mux_enum, TAS2552_CFG_3, 7,
108 tas2552_input_texts);
109
110 static const struct snd_kcontrol_new tas2552_input_mux_control =
111 SOC_DAPM_ENUM("Route", tas2552_input_mux_enum);
112
113 static const struct snd_soc_dapm_widget tas2552_dapm_widgets[] =
114 {
115 SND_SOC_DAPM_INPUT("IN"),
116
117 /* MUX Controls */
118 SND_SOC_DAPM_MUX("Input selection", SND_SOC_NOPM, 0, 0,
119 &tas2552_input_mux_control),
120
121 SND_SOC_DAPM_AIF_IN("DAC IN", "DAC Playback", 0, SND_SOC_NOPM, 0, 0),
122 SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
123 SND_SOC_DAPM_OUT_DRV("ClassD", TAS2552_CFG_2, 7, 0, NULL, 0),
124 SND_SOC_DAPM_SUPPLY("PLL", TAS2552_CFG_2, 3, 0, NULL, 0),
125 SND_SOC_DAPM_POST("Post Event", tas2552_post_event),
126
127 SND_SOC_DAPM_OUTPUT("OUT")
128 };
129
130 static const struct snd_soc_dapm_route tas2552_audio_map[] = {
131 {"DAC", NULL, "DAC IN"},
132 {"Input selection", "Digital", "DAC"},
133 {"Input selection", "Analog", "IN"},
134 {"ClassD", NULL, "Input selection"},
135 {"OUT", NULL, "ClassD"},
136 {"ClassD", NULL, "PLL"},
137 };
138
139 #ifdef CONFIG_PM
140 static void tas2552_sw_shutdown(struct tas2552_data *tas2552, int sw_shutdown)
141 {
142 u8 cfg1_reg = 0;
143
144 if (!tas2552->component)
145 return;
146
147 if (sw_shutdown)
148 cfg1_reg = TAS2552_SWS;
149
150 snd_soc_component_update_bits(tas2552->component, TAS2552_CFG_1, TAS2552_SWS,
151 cfg1_reg);
152 }
153 #endif
154
155 static int tas2552_setup_pll(struct snd_soc_component *component,
156 struct snd_pcm_hw_params *params)
157 {
158 struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
159 bool bypass_pll = false;
160 unsigned int pll_clk = params_rate(params) * 512;
161 unsigned int pll_clkin = tas2552->pll_clkin;
162 u8 pll_enable;
163
164 if (!pll_clkin) {
165 if (tas2552->pll_clk_id != TAS2552_PLL_CLKIN_BCLK)
166 return -EINVAL;
167
168 pll_clkin = snd_soc_params_to_bclk(params);
169 pll_clkin += tas2552->tdm_delay;
170 }
171
172 pll_enable = snd_soc_component_read32(component, TAS2552_CFG_2) & TAS2552_PLL_ENABLE;
173 snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0);
174
175 if (pll_clkin == pll_clk)
176 bypass_pll = true;
177
178 if (bypass_pll) {
179 /* By pass the PLL configuration */
180 snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_2,
181 TAS2552_PLL_BYPASS, TAS2552_PLL_BYPASS);
182 } else {
183 /* Fill in the PLL control registers for J & D
184 * pll_clk = (.5 * pll_clkin * J.D) / 2^p
185 * Need to fill in J and D here based on incoming freq
186 */
187 unsigned int d, q, t;
188 u8 j;
189 u8 pll_sel = (tas2552->pll_clk_id << 3) & TAS2552_PLL_SRC_MASK;
190 u8 p = snd_soc_component_read32(component, TAS2552_PLL_CTRL_1);
191
192 p = (p >> 7);
193
194 recalc:
195 t = (pll_clk * 2) << p;
196 j = t / pll_clkin;
197 d = t % pll_clkin;
198 t = pll_clkin / 10000;
199 q = d / (t + 1);
200 d = q + ((9999 - pll_clkin % 10000) * (d / t - q)) / 10000;
201
202 if (d && (pll_clkin < 512000 || pll_clkin > 9200000)) {
203 if (tas2552->pll_clk_id == TAS2552_PLL_CLKIN_BCLK) {
204 pll_clkin = 1800000;
205 pll_sel = (TAS2552_PLL_CLKIN_1_8_FIXED << 3) &
206 TAS2552_PLL_SRC_MASK;
207 } else {
208 pll_clkin = snd_soc_params_to_bclk(params);
209 pll_clkin += tas2552->tdm_delay;
210 pll_sel = (TAS2552_PLL_CLKIN_BCLK << 3) &
211 TAS2552_PLL_SRC_MASK;
212 }
213 goto recalc;
214 }
215
216 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_PLL_SRC_MASK,
217 pll_sel);
218
219 snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_1,
220 TAS2552_PLL_J_MASK, j);
221 /* Will clear the PLL_BYPASS bit */
222 snd_soc_component_write(component, TAS2552_PLL_CTRL_2,
223 TAS2552_PLL_D_UPPER(d));
224 snd_soc_component_write(component, TAS2552_PLL_CTRL_3,
225 TAS2552_PLL_D_LOWER(d));
226 }
227
228 /* Restore PLL status */
229 snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE,
230 pll_enable);
231
232 return 0;
233 }
234
235 static int tas2552_hw_params(struct snd_pcm_substream *substream,
236 struct snd_pcm_hw_params *params,
237 struct snd_soc_dai *dai)
238 {
239 struct snd_soc_component *component = dai->component;
240 struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
241 int cpf;
242 u8 ser_ctrl1_reg, wclk_rate;
243
244 switch (params_width(params)) {
245 case 16:
246 ser_ctrl1_reg = TAS2552_WORDLENGTH_16BIT;
247 cpf = 32 + tas2552->tdm_delay;
248 break;
249 case 20:
250 ser_ctrl1_reg = TAS2552_WORDLENGTH_20BIT;
251 cpf = 64 + tas2552->tdm_delay;
252 break;
253 case 24:
254 ser_ctrl1_reg = TAS2552_WORDLENGTH_24BIT;
255 cpf = 64 + tas2552->tdm_delay;
256 break;
257 case 32:
258 ser_ctrl1_reg = TAS2552_WORDLENGTH_32BIT;
259 cpf = 64 + tas2552->tdm_delay;
260 break;
261 default:
262 dev_err(component->dev, "Not supported sample size: %d\n",
263 params_width(params));
264 return -EINVAL;
265 }
266
267 if (cpf <= 32)
268 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_32;
269 else if (cpf <= 64)
270 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_64;
271 else if (cpf <= 128)
272 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_128;
273 else
274 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_256;
275
276 snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1,
277 TAS2552_WORDLENGTH_MASK | TAS2552_CLKSPERFRAME_MASK,
278 ser_ctrl1_reg);
279
280 switch (params_rate(params)) {
281 case 8000:
282 wclk_rate = TAS2552_WCLK_FREQ_8KHZ;
283 break;
284 case 11025:
285 case 12000:
286 wclk_rate = TAS2552_WCLK_FREQ_11_12KHZ;
287 break;
288 case 16000:
289 wclk_rate = TAS2552_WCLK_FREQ_16KHZ;
290 break;
291 case 22050:
292 case 24000:
293 wclk_rate = TAS2552_WCLK_FREQ_22_24KHZ;
294 break;
295 case 32000:
296 wclk_rate = TAS2552_WCLK_FREQ_32KHZ;
297 break;
298 case 44100:
299 case 48000:
300 wclk_rate = TAS2552_WCLK_FREQ_44_48KHZ;
301 break;
302 case 88200:
303 case 96000:
304 wclk_rate = TAS2552_WCLK_FREQ_88_96KHZ;
305 break;
306 case 176400:
307 case 192000:
308 wclk_rate = TAS2552_WCLK_FREQ_176_192KHZ;
309 break;
310 default:
311 dev_err(component->dev, "Not supported sample rate: %d\n",
312 params_rate(params));
313 return -EINVAL;
314 }
315
316 snd_soc_component_update_bits(component, TAS2552_CFG_3, TAS2552_WCLK_FREQ_MASK,
317 wclk_rate);
318
319 return tas2552_setup_pll(component, params);
320 }
321
322 #define TAS2552_DAI_FMT_MASK (TAS2552_BCLKDIR | \
323 TAS2552_WCLKDIR | \
324 TAS2552_DATAFORMAT_MASK)
325 static int tas2552_prepare(struct snd_pcm_substream *substream,
326 struct snd_soc_dai *dai)
327 {
328 struct snd_soc_component *component = dai->component;
329 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
330 int delay = 0;
331
332 /* TDM slot selection only valid in DSP_A/_B mode */
333 if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_A)
334 delay += (tas2552->tdm_delay + 1);
335 else if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_B)
336 delay += tas2552->tdm_delay;
337
338 /* Configure data delay */
339 snd_soc_component_write(component, TAS2552_SER_CTRL_2, delay);
340
341 return 0;
342 }
343
344 static int tas2552_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
345 {
346 struct snd_soc_component *component = dai->component;
347 struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
348 u8 serial_format;
349
350 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
351 case SND_SOC_DAIFMT_CBS_CFS:
352 serial_format = 0x00;
353 break;
354 case SND_SOC_DAIFMT_CBS_CFM:
355 serial_format = TAS2552_WCLKDIR;
356 break;
357 case SND_SOC_DAIFMT_CBM_CFS:
358 serial_format = TAS2552_BCLKDIR;
359 break;
360 case SND_SOC_DAIFMT_CBM_CFM:
361 serial_format = (TAS2552_BCLKDIR | TAS2552_WCLKDIR);
362 break;
363 default:
364 dev_vdbg(component->dev, "DAI Format master is not found\n");
365 return -EINVAL;
366 }
367
368 switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK |
369 SND_SOC_DAIFMT_INV_MASK)) {
370 case (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF):
371 break;
372 case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF):
373 case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF):
374 serial_format |= TAS2552_DATAFORMAT_DSP;
375 break;
376 case (SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_NB_NF):
377 serial_format |= TAS2552_DATAFORMAT_RIGHT_J;
378 break;
379 case (SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF):
380 serial_format |= TAS2552_DATAFORMAT_LEFT_J;
381 break;
382 default:
383 dev_vdbg(component->dev, "DAI Format is not found\n");
384 return -EINVAL;
385 }
386 tas2552->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
387
388 snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1, TAS2552_DAI_FMT_MASK,
389 serial_format);
390 return 0;
391 }
392
393 static int tas2552_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
394 unsigned int freq, int dir)
395 {
396 struct snd_soc_component *component = dai->component;
397 struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
398 u8 reg, mask, val;
399
400 switch (clk_id) {
401 case TAS2552_PLL_CLKIN_MCLK:
402 case TAS2552_PLL_CLKIN_IVCLKIN:
403 if (freq < 512000 || freq > 24576000) {
404 /* out of range PLL_CLKIN, fall back to use BCLK */
405 dev_warn(component->dev, "Out of range PLL_CLKIN: %u\n",
406 freq);
407 clk_id = TAS2552_PLL_CLKIN_BCLK;
408 freq = 0;
409 }
410 /* fall through */
411 case TAS2552_PLL_CLKIN_BCLK:
412 case TAS2552_PLL_CLKIN_1_8_FIXED:
413 mask = TAS2552_PLL_SRC_MASK;
414 val = (clk_id << 3) & mask; /* bit 4:5 in the register */
415 reg = TAS2552_CFG_1;
416 tas2552->pll_clk_id = clk_id;
417 tas2552->pll_clkin = freq;
418 break;
419 case TAS2552_PDM_CLK_PLL:
420 case TAS2552_PDM_CLK_IVCLKIN:
421 case TAS2552_PDM_CLK_BCLK:
422 case TAS2552_PDM_CLK_MCLK:
423 mask = TAS2552_PDM_CLK_SEL_MASK;
424 val = (clk_id >> 1) & mask; /* bit 0:1 in the register */
425 reg = TAS2552_PDM_CFG;
426 tas2552->pdm_clk_id = clk_id;
427 tas2552->pdm_clk = freq;
428 break;
429 default:
430 dev_err(component->dev, "Invalid clk id: %d\n", clk_id);
431 return -EINVAL;
432 }
433
434 snd_soc_component_update_bits(component, reg, mask, val);
435
436 return 0;
437 }
438
439 static int tas2552_set_dai_tdm_slot(struct snd_soc_dai *dai,
440 unsigned int tx_mask, unsigned int rx_mask,
441 int slots, int slot_width)
442 {
443 struct snd_soc_component *component = dai->component;
444 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
445 unsigned int lsb;
446
447 if (unlikely(!tx_mask)) {
448 dev_err(component->dev, "tx masks need to be non 0\n");
449 return -EINVAL;
450 }
451
452 /* TDM based on DSP mode requires slots to be adjacent */
453 lsb = __ffs(tx_mask);
454 if ((lsb + 1) != __fls(tx_mask)) {
455 dev_err(component->dev, "Invalid mask, slots must be adjacent\n");
456 return -EINVAL;
457 }
458
459 tas2552->tdm_delay = lsb * slot_width;
460
461 /* DOUT in high-impedance on inactive bit clocks */
462 snd_soc_component_update_bits(component, TAS2552_DOUT,
463 TAS2552_SDOUT_TRISTATE, TAS2552_SDOUT_TRISTATE);
464
465 return 0;
466 }
467
468 static int tas2552_mute(struct snd_soc_dai *dai, int mute)
469 {
470 u8 cfg1_reg = 0;
471 struct snd_soc_component *component = dai->component;
472
473 if (mute)
474 cfg1_reg |= TAS2552_MUTE;
475
476 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, cfg1_reg);
477
478 return 0;
479 }
480
481 #ifdef CONFIG_PM
482 static int tas2552_runtime_suspend(struct device *dev)
483 {
484 struct tas2552_data *tas2552 = dev_get_drvdata(dev);
485
486 tas2552_sw_shutdown(tas2552, 1);
487
488 regcache_cache_only(tas2552->regmap, true);
489 regcache_mark_dirty(tas2552->regmap);
490
491 gpiod_set_value(tas2552->enable_gpio, 0);
492
493 return 0;
494 }
495
496 static int tas2552_runtime_resume(struct device *dev)
497 {
498 struct tas2552_data *tas2552 = dev_get_drvdata(dev);
499
500 gpiod_set_value(tas2552->enable_gpio, 1);
501
502 tas2552_sw_shutdown(tas2552, 0);
503
504 regcache_cache_only(tas2552->regmap, false);
505 regcache_sync(tas2552->regmap);
506
507 return 0;
508 }
509 #endif
510
511 static const struct dev_pm_ops tas2552_pm = {
512 SET_RUNTIME_PM_OPS(tas2552_runtime_suspend, tas2552_runtime_resume,
513 NULL)
514 };
515
516 static const struct snd_soc_dai_ops tas2552_speaker_dai_ops = {
517 .hw_params = tas2552_hw_params,
518 .prepare = tas2552_prepare,
519 .set_sysclk = tas2552_set_dai_sysclk,
520 .set_fmt = tas2552_set_dai_fmt,
521 .set_tdm_slot = tas2552_set_dai_tdm_slot,
522 .digital_mute = tas2552_mute,
523 };
524
525 /* Formats supported by TAS2552 driver. */
526 #define TAS2552_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
527 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
528
529 /* TAS2552 dai structure. */
530 static struct snd_soc_dai_driver tas2552_dai[] = {
531 {
532 .name = "tas2552-amplifier",
533 .playback = {
534 .stream_name = "Playback",
535 .channels_min = 2,
536 .channels_max = 2,
537 .rates = SNDRV_PCM_RATE_8000_192000,
538 .formats = TAS2552_FORMATS,
539 },
540 .ops = &tas2552_speaker_dai_ops,
541 },
542 };
543
544 /*
545 * DAC digital volumes. From -7 to 24 dB in 1 dB steps
546 */
547 static DECLARE_TLV_DB_SCALE(dac_tlv, -700, 100, 0);
548
549 static const char * const tas2552_din_source_select[] = {
550 "Muted",
551 "Left",
552 "Right",
553 "Left + Right average",
554 };
555 static SOC_ENUM_SINGLE_DECL(tas2552_din_source_enum,
556 TAS2552_CFG_3, 3,
557 tas2552_din_source_select);
558
559 static const struct snd_kcontrol_new tas2552_snd_controls[] = {
560 SOC_SINGLE_TLV("Speaker Driver Playback Volume",
561 TAS2552_PGA_GAIN, 0, 0x1f, 0, dac_tlv),
562 SOC_ENUM("DIN source", tas2552_din_source_enum),
563 };
564
565 static int tas2552_component_probe(struct snd_soc_component *component)
566 {
567 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
568 int ret;
569
570 tas2552->component = component;
571
572 ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
573 tas2552->supplies);
574
575 if (ret != 0) {
576 dev_err(component->dev, "Failed to enable supplies: %d\n",
577 ret);
578 return ret;
579 }
580
581 gpiod_set_value(tas2552->enable_gpio, 1);
582
583 ret = pm_runtime_get_sync(component->dev);
584 if (ret < 0) {
585 dev_err(component->dev, "Enabling device failed: %d\n",
586 ret);
587 goto probe_fail;
588 }
589
590 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, TAS2552_MUTE);
591 snd_soc_component_write(component, TAS2552_CFG_3, TAS2552_I2S_OUT_SEL |
592 TAS2552_DIN_SRC_SEL_AVG_L_R);
593 snd_soc_component_write(component, TAS2552_OUTPUT_DATA,
594 TAS2552_PDM_DATA_SEL_V_I |
595 TAS2552_R_DATA_OUT(TAS2552_DATA_OUT_V_DATA));
596 snd_soc_component_write(component, TAS2552_BOOST_APT_CTRL, TAS2552_APT_DELAY_200 |
597 TAS2552_APT_THRESH_20_17);
598
599 snd_soc_component_write(component, TAS2552_CFG_2, TAS2552_BOOST_EN | TAS2552_APT_EN |
600 TAS2552_LIM_EN);
601
602 return 0;
603
604 probe_fail:
605 gpiod_set_value(tas2552->enable_gpio, 0);
606
607 regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
608 tas2552->supplies);
609 return ret;
610 }
611
612 static void tas2552_component_remove(struct snd_soc_component *component)
613 {
614 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
615
616 pm_runtime_put(component->dev);
617
618 gpiod_set_value(tas2552->enable_gpio, 0);
619 };
620
621 #ifdef CONFIG_PM
622 static int tas2552_suspend(struct snd_soc_component *component)
623 {
624 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
625 int ret;
626
627 ret = regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
628 tas2552->supplies);
629
630 if (ret != 0)
631 dev_err(component->dev, "Failed to disable supplies: %d\n",
632 ret);
633 return ret;
634 }
635
636 static int tas2552_resume(struct snd_soc_component *component)
637 {
638 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
639 int ret;
640
641 ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
642 tas2552->supplies);
643
644 if (ret != 0) {
645 dev_err(component->dev, "Failed to enable supplies: %d\n",
646 ret);
647 }
648
649 return ret;
650 }
651 #else
652 #define tas2552_suspend NULL
653 #define tas2552_resume NULL
654 #endif
655
656 static const struct snd_soc_component_driver soc_component_dev_tas2552 = {
657 .probe = tas2552_component_probe,
658 .remove = tas2552_component_remove,
659 .suspend = tas2552_suspend,
660 .resume = tas2552_resume,
661 .controls = tas2552_snd_controls,
662 .num_controls = ARRAY_SIZE(tas2552_snd_controls),
663 .dapm_widgets = tas2552_dapm_widgets,
664 .num_dapm_widgets = ARRAY_SIZE(tas2552_dapm_widgets),
665 .dapm_routes = tas2552_audio_map,
666 .num_dapm_routes = ARRAY_SIZE(tas2552_audio_map),
667 .idle_bias_on = 1,
668 .endianness = 1,
669 .non_legacy_dai_naming = 1,
670 };
671
672 static const struct regmap_config tas2552_regmap_config = {
673 .reg_bits = 8,
674 .val_bits = 8,
675
676 .max_register = TAS2552_MAX_REG,
677 .reg_defaults = tas2552_reg_defs,
678 .num_reg_defaults = ARRAY_SIZE(tas2552_reg_defs),
679 .cache_type = REGCACHE_RBTREE,
680 };
681
682 static int tas2552_probe(struct i2c_client *client,
683 const struct i2c_device_id *id)
684 {
685 struct device *dev;
686 struct tas2552_data *data;
687 int ret;
688 int i;
689
690 dev = &client->dev;
691 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
692 if (data == NULL)
693 return -ENOMEM;
694
695 data->enable_gpio = devm_gpiod_get_optional(dev, "enable",
696 GPIOD_OUT_LOW);
697 if (IS_ERR(data->enable_gpio))
698 return PTR_ERR(data->enable_gpio);
699
700 data->tas2552_client = client;
701 data->regmap = devm_regmap_init_i2c(client, &tas2552_regmap_config);
702 if (IS_ERR(data->regmap)) {
703 ret = PTR_ERR(data->regmap);
704 dev_err(&client->dev, "Failed to allocate register map: %d\n",
705 ret);
706 return ret;
707 }
708
709 for (i = 0; i < ARRAY_SIZE(data->supplies); i++)
710 data->supplies[i].supply = tas2552_supply_names[i];
711
712 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies),
713 data->supplies);
714 if (ret != 0) {
715 dev_err(dev, "Failed to request supplies: %d\n", ret);
716 return ret;
717 }
718
719 pm_runtime_set_active(&client->dev);
720 pm_runtime_set_autosuspend_delay(&client->dev, 1000);
721 pm_runtime_use_autosuspend(&client->dev);
722 pm_runtime_enable(&client->dev);
723 pm_runtime_mark_last_busy(&client->dev);
724 pm_runtime_put_sync_autosuspend(&client->dev);
725
726 dev_set_drvdata(&client->dev, data);
727
728 ret = devm_snd_soc_register_component(&client->dev,
729 &soc_component_dev_tas2552,
730 tas2552_dai, ARRAY_SIZE(tas2552_dai));
731 if (ret < 0)
732 dev_err(&client->dev, "Failed to register component: %d\n", ret);
733
734 return ret;
735 }
736
737 static int tas2552_i2c_remove(struct i2c_client *client)
738 {
739 pm_runtime_disable(&client->dev);
740 return 0;
741 }
742
743 static const struct i2c_device_id tas2552_id[] = {
744 { "tas2552", 0 },
745 { }
746 };
747 MODULE_DEVICE_TABLE(i2c, tas2552_id);
748
749 #if IS_ENABLED(CONFIG_OF)
750 static const struct of_device_id tas2552_of_match[] = {
751 { .compatible = "ti,tas2552", },
752 {},
753 };
754 MODULE_DEVICE_TABLE(of, tas2552_of_match);
755 #endif
756
757 static struct i2c_driver tas2552_i2c_driver = {
758 .driver = {
759 .name = "tas2552",
760 .of_match_table = of_match_ptr(tas2552_of_match),
761 .pm = &tas2552_pm,
762 },
763 .probe = tas2552_probe,
764 .remove = tas2552_i2c_remove,
765 .id_table = tas2552_id,
766 };
767
768 module_i2c_driver(tas2552_i2c_driver);
769
770 MODULE_AUTHOR("Dan Muprhy <dmurphy@ti.com>");
771 MODULE_DESCRIPTION("TAS2552 Audio amplifier driver");
772 MODULE_LICENSE("GPL");
Linux with added FPC-III support