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 - 2024 Texas Instruments Incorporated -
6 * https://www.ti.com
7 *
8 * Author: Dan Murphy <dmurphy@ti.com>
9 */
10
11 #include <linux/module.h>
12 #include <linux/errno.h>
13 #include <linux/device.h>
14 #include <linux/i2c.h>
15 #include <linux/gpio.h>
16 #include <linux/of_gpio.h>
17 #include <linux/pm_runtime.h>
18 #include <linux/regmap.h>
19 #include <linux/slab.h>
20
21 #include <linux/gpio/consumer.h>
22 #include <linux/regulator/consumer.h>
23
24 #include <sound/pcm.h>
25 #include <sound/pcm_params.h>
26 #include <sound/soc.h>
27 #include <sound/soc-dapm.h>
28 #include <sound/tlv.h>
29 #include <sound/tas2552-plat.h>
30 #include <dt-bindings/sound/tas2552.h>
31
32 #include "tas2552.h"
33
34 static const struct reg_default tas2552_reg_defs[] = {
35 {TAS2552_CFG_1, 0x22},
36 {TAS2552_CFG_3, 0x80},
37 {TAS2552_DOUT, 0x00},
38 {TAS2552_OUTPUT_DATA, 0xc0},
39 {TAS2552_PDM_CFG, 0x01},
40 {TAS2552_PGA_GAIN, 0x00},
41 {TAS2552_BOOST_APT_CTRL, 0x0f},
42 {TAS2552_RESERVED_0D, 0xbe},
43 {TAS2552_LIMIT_RATE_HYS, 0x08},
44 {TAS2552_CFG_2, 0xef},
45 {TAS2552_SER_CTRL_1, 0x00},
46 {TAS2552_SER_CTRL_2, 0x00},
47 {TAS2552_PLL_CTRL_1, 0x10},
48 {TAS2552_PLL_CTRL_2, 0x00},
49 {TAS2552_PLL_CTRL_3, 0x00},
50 {TAS2552_BTIP, 0x8f},
51 {TAS2552_BTS_CTRL, 0x80},
52 {TAS2552_LIMIT_RELEASE, 0x04},
53 {TAS2552_LIMIT_INT_COUNT, 0x00},
54 {TAS2552_EDGE_RATE_CTRL, 0x40},
55 {TAS2552_VBAT_DATA, 0x00},
56 };
57
58 #define TAS2552_NUM_SUPPLIES 3
59 static const char *tas2552_supply_names[TAS2552_NUM_SUPPLIES] = {
60 "vbat", /* vbat voltage */
61 "iovdd", /* I/O Voltage */
62 "avdd", /* Analog DAC Voltage */
63 };
64
65 struct tas2552_data {
66 struct snd_soc_component *component;
67 struct regmap *regmap;
68 struct i2c_client *tas2552_client;
69 struct regulator_bulk_data supplies[TAS2552_NUM_SUPPLIES];
70 struct gpio_desc *enable_gpio;
71 unsigned char regs[TAS2552_VBAT_DATA];
72 unsigned int pll_clkin;
73 int pll_clk_id;
74 unsigned int pdm_clk;
75 int pdm_clk_id;
76
77 unsigned int dai_fmt;
78 unsigned int tdm_delay;
79 };
80
tas2552_post_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)81 static int tas2552_post_event(struct snd_soc_dapm_widget *w,
82 struct snd_kcontrol *kcontrol, int event)
83 {
84 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
85
86 switch (event) {
87 case SND_SOC_DAPM_POST_PMU:
88 snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xc0);
89 snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5),
90 (1 << 5));
91 snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 0);
92 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS, 0);
93 break;
94 case SND_SOC_DAPM_POST_PMD:
95 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS,
96 TAS2552_SWS);
97 snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 1);
98 snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5), 0);
99 snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xbe);
100 break;
101 }
102 return 0;
103 }
104
105 /* Input mux controls */
106 static const char * const tas2552_input_texts[] = {
107 "Digital", "Analog" };
108 static SOC_ENUM_SINGLE_DECL(tas2552_input_mux_enum, TAS2552_CFG_3, 7,
109 tas2552_input_texts);
110
111 static const struct snd_kcontrol_new tas2552_input_mux_control =
112 SOC_DAPM_ENUM("Route", tas2552_input_mux_enum);
113
114 static const struct snd_soc_dapm_widget tas2552_dapm_widgets[] =
115 {
116 SND_SOC_DAPM_INPUT("IN"),
117
118 /* MUX Controls */
119 SND_SOC_DAPM_MUX("Input selection", SND_SOC_NOPM, 0, 0,
120 &tas2552_input_mux_control),
121
122 SND_SOC_DAPM_AIF_IN("DAC IN", "DAC Playback", 0, SND_SOC_NOPM, 0, 0),
123 SND_SOC_DAPM_AIF_OUT("ASI OUT", "DAC Capture", 0, SND_SOC_NOPM, 0, 0),
124 SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
125 SND_SOC_DAPM_OUT_DRV("ClassD", TAS2552_CFG_2, 7, 0, NULL, 0),
126 SND_SOC_DAPM_SUPPLY("PLL", TAS2552_CFG_2, 3, 0, NULL, 0),
127 SND_SOC_DAPM_POST("Post Event", tas2552_post_event),
128
129 SND_SOC_DAPM_OUTPUT("OUT"),
130 SND_SOC_DAPM_INPUT("DMIC")
131 };
132
133 static const struct snd_soc_dapm_route tas2552_audio_map[] = {
134 {"DAC", NULL, "DAC IN"},
135 {"Input selection", "Digital", "DAC"},
136 {"Input selection", "Analog", "IN"},
137 {"ClassD", NULL, "Input selection"},
138 {"OUT", NULL, "ClassD"},
139 {"ClassD", NULL, "PLL"},
140 {"ASI OUT", NULL, "DMIC"}
141 };
142
143 #ifdef CONFIG_PM
tas2552_sw_shutdown(struct tas2552_data * tas2552,int sw_shutdown)144 static void tas2552_sw_shutdown(struct tas2552_data *tas2552, int sw_shutdown)
145 {
146 u8 cfg1_reg = 0;
147
148 if (!tas2552->component)
149 return;
150
151 if (sw_shutdown)
152 cfg1_reg = TAS2552_SWS;
153
154 snd_soc_component_update_bits(tas2552->component, TAS2552_CFG_1, TAS2552_SWS,
155 cfg1_reg);
156 }
157 #endif
158
tas2552_setup_pll(struct snd_soc_component * component,struct snd_pcm_hw_params * params)159 static int tas2552_setup_pll(struct snd_soc_component *component,
160 struct snd_pcm_hw_params *params)
161 {
162 struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
163 bool bypass_pll = false;
164 unsigned int pll_clk = params_rate(params) * 512;
165 unsigned int pll_clkin = tas2552->pll_clkin;
166 u8 pll_enable;
167
168 if (!pll_clkin) {
169 if (tas2552->pll_clk_id != TAS2552_PLL_CLKIN_BCLK)
170 return -EINVAL;
171
172 pll_clkin = snd_soc_params_to_bclk(params);
173 pll_clkin += tas2552->tdm_delay;
174 }
175
176 pll_enable = snd_soc_component_read(component, TAS2552_CFG_2) & TAS2552_PLL_ENABLE;
177 snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0);
178
179 if (pll_clkin == pll_clk)
180 bypass_pll = true;
181
182 if (bypass_pll) {
183 /* By pass the PLL configuration */
184 snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_2,
185 TAS2552_PLL_BYPASS, TAS2552_PLL_BYPASS);
186 } else {
187 /* Fill in the PLL control registers for J & D
188 * pll_clk = (.5 * pll_clkin * J.D) / 2^p
189 * Need to fill in J and D here based on incoming freq
190 */
191 unsigned int d, q, t;
192 u8 j;
193 u8 pll_sel = (tas2552->pll_clk_id << 3) & TAS2552_PLL_SRC_MASK;
194 u8 p = snd_soc_component_read(component, TAS2552_PLL_CTRL_1);
195
196 p = (p >> 7);
197
198 recalc:
199 t = (pll_clk * 2) << p;
200 j = t / pll_clkin;
201 d = t % pll_clkin;
202 t = pll_clkin / 10000;
203 q = d / (t + 1);
204 d = q + ((9999 - pll_clkin % 10000) * (d / t - q)) / 10000;
205
206 if (d && (pll_clkin < 512000 || pll_clkin > 9200000)) {
207 if (tas2552->pll_clk_id == TAS2552_PLL_CLKIN_BCLK) {
208 pll_clkin = 1800000;
209 pll_sel = (TAS2552_PLL_CLKIN_1_8_FIXED << 3) &
210 TAS2552_PLL_SRC_MASK;
211 } else {
212 pll_clkin = snd_soc_params_to_bclk(params);
213 pll_clkin += tas2552->tdm_delay;
214 pll_sel = (TAS2552_PLL_CLKIN_BCLK << 3) &
215 TAS2552_PLL_SRC_MASK;
216 }
217 goto recalc;
218 }
219
220 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_PLL_SRC_MASK,
221 pll_sel);
222
223 snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_1,
224 TAS2552_PLL_J_MASK, j);
225 /* Will clear the PLL_BYPASS bit */
226 snd_soc_component_write(component, TAS2552_PLL_CTRL_2,
227 TAS2552_PLL_D_UPPER(d));
228 snd_soc_component_write(component, TAS2552_PLL_CTRL_3,
229 TAS2552_PLL_D_LOWER(d));
230 }
231
232 /* Restore PLL status */
233 snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE,
234 pll_enable);
235
236 return 0;
237 }
238
tas2552_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)239 static int tas2552_hw_params(struct snd_pcm_substream *substream,
240 struct snd_pcm_hw_params *params,
241 struct snd_soc_dai *dai)
242 {
243 struct snd_soc_component *component = dai->component;
244 struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
245 int cpf;
246 u8 ser_ctrl1_reg, wclk_rate;
247
248 switch (params_width(params)) {
249 case 16:
250 ser_ctrl1_reg = TAS2552_WORDLENGTH_16BIT;
251 cpf = 32 + tas2552->tdm_delay;
252 break;
253 case 20:
254 ser_ctrl1_reg = TAS2552_WORDLENGTH_20BIT;
255 cpf = 64 + tas2552->tdm_delay;
256 break;
257 case 24:
258 ser_ctrl1_reg = TAS2552_WORDLENGTH_24BIT;
259 cpf = 64 + tas2552->tdm_delay;
260 break;
261 case 32:
262 ser_ctrl1_reg = TAS2552_WORDLENGTH_32BIT;
263 cpf = 64 + tas2552->tdm_delay;
264 break;
265 default:
266 dev_err(component->dev, "Not supported sample size: %d\n",
267 params_width(params));
268 return -EINVAL;
269 }
270
271 if (cpf <= 32)
272 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_32;
273 else if (cpf <= 64)
274 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_64;
275 else if (cpf <= 128)
276 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_128;
277 else
278 ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_256;
279
280 snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1,
281 TAS2552_WORDLENGTH_MASK | TAS2552_CLKSPERFRAME_MASK,
282 ser_ctrl1_reg);
283
284 switch (params_rate(params)) {
285 case 8000:
286 wclk_rate = TAS2552_WCLK_FREQ_8KHZ;
287 break;
288 case 11025:
289 case 12000:
290 wclk_rate = TAS2552_WCLK_FREQ_11_12KHZ;
291 break;
292 case 16000:
293 wclk_rate = TAS2552_WCLK_FREQ_16KHZ;
294 break;
295 case 22050:
296 case 24000:
297 wclk_rate = TAS2552_WCLK_FREQ_22_24KHZ;
298 break;
299 case 32000:
300 wclk_rate = TAS2552_WCLK_FREQ_32KHZ;
301 break;
302 case 44100:
303 case 48000:
304 wclk_rate = TAS2552_WCLK_FREQ_44_48KHZ;
305 break;
306 case 88200:
307 case 96000:
308 wclk_rate = TAS2552_WCLK_FREQ_88_96KHZ;
309 break;
310 case 176400:
311 case 192000:
312 wclk_rate = TAS2552_WCLK_FREQ_176_192KHZ;
313 break;
314 default:
315 dev_err(component->dev, "Not supported sample rate: %d\n",
316 params_rate(params));
317 return -EINVAL;
318 }
319
320 snd_soc_component_update_bits(component, TAS2552_CFG_3, TAS2552_WCLK_FREQ_MASK,
321 wclk_rate);
322
323 return tas2552_setup_pll(component, params);
324 }
325
326 #define TAS2552_DAI_FMT_MASK (TAS2552_BCLKDIR | \
327 TAS2552_WCLKDIR | \
328 TAS2552_DATAFORMAT_MASK)
tas2552_prepare(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)329 static int tas2552_prepare(struct snd_pcm_substream *substream,
330 struct snd_soc_dai *dai)
331 {
332 struct snd_soc_component *component = dai->component;
333 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
334 int delay = 0;
335
336 /* TDM slot selection only valid in DSP_A/_B mode */
337 if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_A)
338 delay += (tas2552->tdm_delay + 1);
339 else if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_B)
340 delay += tas2552->tdm_delay;
341
342 /* Configure data delay */
343 snd_soc_component_write(component, TAS2552_SER_CTRL_2, delay);
344
345 return 0;
346 }
347
tas2552_set_dai_fmt(struct snd_soc_dai * dai,unsigned int fmt)348 static int tas2552_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
349 {
350 struct snd_soc_component *component = dai->component;
351 struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
352 u8 serial_format;
353
354 switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
355 case SND_SOC_DAIFMT_CBC_CFC:
356 serial_format = 0x00;
357 break;
358 case SND_SOC_DAIFMT_CBC_CFP:
359 serial_format = TAS2552_WCLKDIR;
360 break;
361 case SND_SOC_DAIFMT_CBP_CFC:
362 serial_format = TAS2552_BCLKDIR;
363 break;
364 case SND_SOC_DAIFMT_CBP_CFP:
365 serial_format = (TAS2552_BCLKDIR | TAS2552_WCLKDIR);
366 break;
367 default:
368 dev_vdbg(component->dev, "DAI Format master is not found\n");
369 return -EINVAL;
370 }
371
372 switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK |
373 SND_SOC_DAIFMT_INV_MASK)) {
374 case (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF):
375 break;
376 case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF):
377 case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF):
378 serial_format |= TAS2552_DATAFORMAT_DSP;
379 break;
380 case (SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_NB_NF):
381 serial_format |= TAS2552_DATAFORMAT_RIGHT_J;
382 break;
383 case (SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF):
384 serial_format |= TAS2552_DATAFORMAT_LEFT_J;
385 break;
386 default:
387 dev_vdbg(component->dev, "DAI Format is not found\n");
388 return -EINVAL;
389 }
390 tas2552->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
391
392 snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1, TAS2552_DAI_FMT_MASK,
393 serial_format);
394 return 0;
395 }
396
tas2552_set_dai_sysclk(struct snd_soc_dai * dai,int clk_id,unsigned int freq,int dir)397 static int tas2552_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
398 unsigned int freq, int dir)
399 {
400 struct snd_soc_component *component = dai->component;
401 struct tas2552_data *tas2552 = dev_get_drvdata(component->dev);
402 u8 reg, mask, val;
403
404 switch (clk_id) {
405 case TAS2552_PLL_CLKIN_MCLK:
406 case TAS2552_PLL_CLKIN_IVCLKIN:
407 if (freq < 512000 || freq > 24576000) {
408 /* out of range PLL_CLKIN, fall back to use BCLK */
409 dev_warn(component->dev, "Out of range PLL_CLKIN: %u\n",
410 freq);
411 clk_id = TAS2552_PLL_CLKIN_BCLK;
412 freq = 0;
413 }
414 fallthrough;
415 case TAS2552_PLL_CLKIN_BCLK:
416 case TAS2552_PLL_CLKIN_1_8_FIXED:
417 mask = TAS2552_PLL_SRC_MASK;
418 val = (clk_id << 3) & mask; /* bit 4:5 in the register */
419 reg = TAS2552_CFG_1;
420 tas2552->pll_clk_id = clk_id;
421 tas2552->pll_clkin = freq;
422 break;
423 case TAS2552_PDM_CLK_PLL:
424 case TAS2552_PDM_CLK_IVCLKIN:
425 case TAS2552_PDM_CLK_BCLK:
426 case TAS2552_PDM_CLK_MCLK:
427 mask = TAS2552_PDM_CLK_SEL_MASK;
428 val = (clk_id >> 1) & mask; /* bit 0:1 in the register */
429 reg = TAS2552_PDM_CFG;
430 tas2552->pdm_clk_id = clk_id;
431 tas2552->pdm_clk = freq;
432 break;
433 default:
434 dev_err(component->dev, "Invalid clk id: %d\n", clk_id);
435 return -EINVAL;
436 }
437
438 snd_soc_component_update_bits(component, reg, mask, val);
439
440 return 0;
441 }
442
tas2552_set_dai_tdm_slot(struct snd_soc_dai * dai,unsigned int tx_mask,unsigned int rx_mask,int slots,int slot_width)443 static int tas2552_set_dai_tdm_slot(struct snd_soc_dai *dai,
444 unsigned int tx_mask, unsigned int rx_mask,
445 int slots, int slot_width)
446 {
447 struct snd_soc_component *component = dai->component;
448 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
449 unsigned int lsb;
450
451 if (unlikely(!tx_mask)) {
452 dev_err(component->dev, "tx masks need to be non 0\n");
453 return -EINVAL;
454 }
455
456 /* TDM based on DSP mode requires slots to be adjacent */
457 lsb = __ffs(tx_mask);
458 if ((lsb + 1) != __fls(tx_mask)) {
459 dev_err(component->dev, "Invalid mask, slots must be adjacent\n");
460 return -EINVAL;
461 }
462
463 tas2552->tdm_delay = lsb * slot_width;
464
465 /* DOUT in high-impedance on inactive bit clocks */
466 snd_soc_component_update_bits(component, TAS2552_DOUT,
467 TAS2552_SDOUT_TRISTATE, TAS2552_SDOUT_TRISTATE);
468
469 return 0;
470 }
471
tas2552_mute(struct snd_soc_dai * dai,int mute,int direction)472 static int tas2552_mute(struct snd_soc_dai *dai, int mute, int direction)
473 {
474 u8 cfg1_reg = 0;
475 struct snd_soc_component *component = dai->component;
476
477 if (mute)
478 cfg1_reg |= TAS2552_MUTE;
479
480 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, cfg1_reg);
481
482 return 0;
483 }
484
485 #ifdef CONFIG_PM
tas2552_runtime_suspend(struct device * dev)486 static int tas2552_runtime_suspend(struct device *dev)
487 {
488 struct tas2552_data *tas2552 = dev_get_drvdata(dev);
489
490 tas2552_sw_shutdown(tas2552, 1);
491
492 regcache_cache_only(tas2552->regmap, true);
493 regcache_mark_dirty(tas2552->regmap);
494
495 gpiod_set_value(tas2552->enable_gpio, 0);
496
497 return 0;
498 }
499
tas2552_runtime_resume(struct device * dev)500 static int tas2552_runtime_resume(struct device *dev)
501 {
502 struct tas2552_data *tas2552 = dev_get_drvdata(dev);
503
504 gpiod_set_value(tas2552->enable_gpio, 1);
505
506 tas2552_sw_shutdown(tas2552, 0);
507
508 regcache_cache_only(tas2552->regmap, false);
509 regcache_sync(tas2552->regmap);
510
511 return 0;
512 }
513 #endif
514
515 static const struct dev_pm_ops tas2552_pm = {
516 SET_RUNTIME_PM_OPS(tas2552_runtime_suspend, tas2552_runtime_resume,
517 NULL)
518 };
519
520 static const struct snd_soc_dai_ops tas2552_speaker_dai_ops = {
521 .hw_params = tas2552_hw_params,
522 .prepare = tas2552_prepare,
523 .set_sysclk = tas2552_set_dai_sysclk,
524 .set_fmt = tas2552_set_dai_fmt,
525 .set_tdm_slot = tas2552_set_dai_tdm_slot,
526 .mute_stream = tas2552_mute,
527 .no_capture_mute = 1,
528 };
529
530 /* Formats supported by TAS2552 driver. */
531 #define TAS2552_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
532 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
533
534 /* TAS2552 dai structure. */
535 static struct snd_soc_dai_driver tas2552_dai[] = {
536 {
537 .name = "tas2552-amplifier",
538 .playback = {
539 .stream_name = "Playback",
540 .channels_min = 2,
541 .channels_max = 2,
542 .rates = SNDRV_PCM_RATE_8000_192000,
543 .formats = TAS2552_FORMATS,
544 },
545 .capture = {
546 .stream_name = "Capture",
547 .channels_min = 2,
548 .channels_max = 2,
549 .rates = SNDRV_PCM_RATE_8000_192000,
550 .formats = TAS2552_FORMATS,
551 },
552 .ops = &tas2552_speaker_dai_ops,
553 },
554 };
555
556 /*
557 * DAC digital volumes. From -7 to 24 dB in 1 dB steps
558 */
559 static DECLARE_TLV_DB_SCALE(dac_tlv, -700, 100, 0);
560
561 static const char * const tas2552_din_source_select[] = {
562 "Muted",
563 "Left",
564 "Right",
565 "Left + Right average",
566 };
567 static SOC_ENUM_SINGLE_DECL(tas2552_din_source_enum,
568 TAS2552_CFG_3, 3,
569 tas2552_din_source_select);
570
571 static const struct snd_kcontrol_new tas2552_snd_controls[] = {
572 SOC_SINGLE_TLV("Speaker Driver Playback Volume",
573 TAS2552_PGA_GAIN, 0, 0x1f, 0, dac_tlv),
574 SOC_ENUM("DIN source", tas2552_din_source_enum),
575 };
576
tas2552_component_probe(struct snd_soc_component * component)577 static int tas2552_component_probe(struct snd_soc_component *component)
578 {
579 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
580 int ret;
581
582 tas2552->component = component;
583
584 ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
585 tas2552->supplies);
586
587 if (ret != 0) {
588 dev_err(component->dev, "Failed to enable supplies: %d\n",
589 ret);
590 return ret;
591 }
592
593 gpiod_set_value(tas2552->enable_gpio, 1);
594
595 ret = pm_runtime_resume_and_get(component->dev);
596 if (ret < 0) {
597 dev_err(component->dev, "Enabling device failed: %d\n",
598 ret);
599 goto probe_fail;
600 }
601
602 snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, TAS2552_MUTE);
603 snd_soc_component_write(component, TAS2552_CFG_3, TAS2552_I2S_OUT_SEL |
604 TAS2552_DIN_SRC_SEL_AVG_L_R);
605 snd_soc_component_write(component, TAS2552_OUTPUT_DATA,
606 TAS2552_PDM_DATA_SEL_V_I |
607 TAS2552_R_DATA_OUT(TAS2552_DATA_OUT_V_DATA));
608 snd_soc_component_write(component, TAS2552_BOOST_APT_CTRL, TAS2552_APT_DELAY_200 |
609 TAS2552_APT_THRESH_20_17);
610
611 snd_soc_component_write(component, TAS2552_CFG_2, TAS2552_BOOST_EN | TAS2552_APT_EN |
612 TAS2552_LIM_EN);
613
614 return 0;
615
616 probe_fail:
617 pm_runtime_put_noidle(component->dev);
618 gpiod_set_value(tas2552->enable_gpio, 0);
619
620 regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
621 tas2552->supplies);
622 return ret;
623 }
624
tas2552_component_remove(struct snd_soc_component * component)625 static void tas2552_component_remove(struct snd_soc_component *component)
626 {
627 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
628
629 pm_runtime_put(component->dev);
630
631 gpiod_set_value(tas2552->enable_gpio, 0);
632 };
633
634 #ifdef CONFIG_PM
tas2552_suspend(struct snd_soc_component * component)635 static int tas2552_suspend(struct snd_soc_component *component)
636 {
637 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
638 int ret;
639
640 ret = regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies),
641 tas2552->supplies);
642
643 if (ret != 0)
644 dev_err(component->dev, "Failed to disable supplies: %d\n",
645 ret);
646 return ret;
647 }
648
tas2552_resume(struct snd_soc_component * component)649 static int tas2552_resume(struct snd_soc_component *component)
650 {
651 struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component);
652 int ret;
653
654 ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies),
655 tas2552->supplies);
656
657 if (ret != 0) {
658 dev_err(component->dev, "Failed to enable supplies: %d\n",
659 ret);
660 }
661
662 return ret;
663 }
664 #else
665 #define tas2552_suspend NULL
666 #define tas2552_resume NULL
667 #endif
668
669 static const struct snd_soc_component_driver soc_component_dev_tas2552 = {
670 .probe = tas2552_component_probe,
671 .remove = tas2552_component_remove,
672 .suspend = tas2552_suspend,
673 .resume = tas2552_resume,
674 .controls = tas2552_snd_controls,
675 .num_controls = ARRAY_SIZE(tas2552_snd_controls),
676 .dapm_widgets = tas2552_dapm_widgets,
677 .num_dapm_widgets = ARRAY_SIZE(tas2552_dapm_widgets),
678 .dapm_routes = tas2552_audio_map,
679 .num_dapm_routes = ARRAY_SIZE(tas2552_audio_map),
680 .idle_bias_on = 1,
681 .endianness = 1,
682 };
683
684 static const struct regmap_config tas2552_regmap_config = {
685 .reg_bits = 8,
686 .val_bits = 8,
687
688 .max_register = TAS2552_MAX_REG,
689 .reg_defaults = tas2552_reg_defs,
690 .num_reg_defaults = ARRAY_SIZE(tas2552_reg_defs),
691 .cache_type = REGCACHE_RBTREE,
692 };
693
tas2552_probe(struct i2c_client * client)694 static int tas2552_probe(struct i2c_client *client)
695 {
696 struct device *dev;
697 struct tas2552_data *data;
698 int ret;
699 int i;
700
701 dev = &client->dev;
702 data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
703 if (data == NULL)
704 return -ENOMEM;
705
706 data->enable_gpio = devm_gpiod_get_optional(dev, "enable",
707 GPIOD_OUT_LOW);
708 if (IS_ERR(data->enable_gpio))
709 return PTR_ERR(data->enable_gpio);
710
711 data->tas2552_client = client;
712 data->regmap = devm_regmap_init_i2c(client, &tas2552_regmap_config);
713 if (IS_ERR(data->regmap)) {
714 ret = PTR_ERR(data->regmap);
715 dev_err(&client->dev, "Failed to allocate register map: %d\n",
716 ret);
717 return ret;
718 }
719
720 for (i = 0; i < ARRAY_SIZE(data->supplies); i++)
721 data->supplies[i].supply = tas2552_supply_names[i];
722
723 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies),
724 data->supplies);
725 if (ret != 0) {
726 dev_err(dev, "Failed to request supplies: %d\n", ret);
727 return ret;
728 }
729
730 pm_runtime_set_active(&client->dev);
731 pm_runtime_set_autosuspend_delay(&client->dev, 1000);
732 pm_runtime_use_autosuspend(&client->dev);
733 pm_runtime_enable(&client->dev);
734 pm_runtime_mark_last_busy(&client->dev);
735 pm_runtime_put_sync_autosuspend(&client->dev);
736
737 dev_set_drvdata(&client->dev, data);
738
739 ret = devm_snd_soc_register_component(&client->dev,
740 &soc_component_dev_tas2552,
741 tas2552_dai, ARRAY_SIZE(tas2552_dai));
742 if (ret < 0) {
743 dev_err(&client->dev, "Failed to register component: %d\n", ret);
744 pm_runtime_get_noresume(&client->dev);
745 }
746
747 return ret;
748 }
749
tas2552_i2c_remove(struct i2c_client * client)750 static void tas2552_i2c_remove(struct i2c_client *client)
751 {
752 pm_runtime_disable(&client->dev);
753 }
754
755 static const struct i2c_device_id tas2552_id[] = {
756 { "tas2552", 0 },
757 { }
758 };
759 MODULE_DEVICE_TABLE(i2c, tas2552_id);
760
761 #if IS_ENABLED(CONFIG_OF)
762 static const struct of_device_id tas2552_of_match[] = {
763 { .compatible = "ti,tas2552", },
764 {},
765 };
766 MODULE_DEVICE_TABLE(of, tas2552_of_match);
767 #endif
768
769 static struct i2c_driver tas2552_i2c_driver = {
770 .driver = {
771 .name = "tas2552",
772 .of_match_table = of_match_ptr(tas2552_of_match),
773 .pm = &tas2552_pm,
774 },
775 .probe = tas2552_probe,
776 .remove = tas2552_i2c_remove,
777 .id_table = tas2552_id,
778 };
779
780 module_i2c_driver(tas2552_i2c_driver);
781
782 MODULE_AUTHOR("Dan Muprhy <dmurphy@ti.com>");
783 MODULE_DESCRIPTION("TAS2552 Audio amplifier driver");
784 MODULE_LICENSE("GPL");
785