xref: /openbmc/linux/sound/soc/codecs/tas2562.c (revision 2f3092e7)
1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // Driver for the Texas Instruments TAS2562 CODEC
4 // Copyright (C) 2019 Texas Instruments Inc.
5 
6 
7 #include <linux/module.h>
8 #include <linux/errno.h>
9 #include <linux/device.h>
10 #include <linux/i2c.h>
11 #include <linux/regmap.h>
12 #include <linux/slab.h>
13 #include <linux/gpio/consumer.h>
14 #include <linux/regulator/consumer.h>
15 #include <linux/delay.h>
16 
17 #include <sound/pcm.h>
18 #include <sound/pcm_params.h>
19 #include <sound/soc.h>
20 #include <sound/soc-dapm.h>
21 #include <sound/tlv.h>
22 
23 #include "tas2562.h"
24 
25 #define TAS2562_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE |\
26 			 SNDRV_PCM_FORMAT_S32_LE)
27 
28 /* DVC equation involves floating point math
29  * round(10^(volume in dB/20)*2^30)
30  * so create a lookup table for 2dB step
31  */
32 static const unsigned int float_vol_db_lookup[] = {
33 0x00000d43, 0x000010b2, 0x00001505, 0x00001a67, 0x00002151,
34 0x000029f1, 0x000034cd, 0x00004279, 0x000053af, 0x0000695b,
35 0x0000695b, 0x0000a6fa, 0x0000d236, 0x000108a4, 0x00014d2a,
36 0x0001a36e, 0x00021008, 0x000298c0, 0x000344df, 0x00041d8f,
37 0x00052e5a, 0x000685c8, 0x00083621, 0x000a566d, 0x000d03a7,
38 0x0010624d, 0x0014a050, 0x0019f786, 0x0020b0bc, 0x0029279d,
39 0x0033cf8d, 0x004139d3, 0x00521d50, 0x00676044, 0x0082248a,
40 0x00a3d70a, 0x00ce4328, 0x0103ab3d, 0x0146e75d, 0x019b8c27,
41 0x02061b89, 0x028c423f, 0x03352529, 0x0409c2b0, 0x05156d68,
42 0x080e9f96, 0x0a24b062, 0x0cc509ab, 0x10137987, 0x143d1362,
43 0x197a967f, 0x2013739e, 0x28619ae9, 0x32d64617, 0x40000000
44 };
45 
46 struct tas2562_data {
47 	struct snd_soc_component *component;
48 	struct gpio_desc *sdz_gpio;
49 	struct regmap *regmap;
50 	struct device *dev;
51 	struct i2c_client *client;
52 	int v_sense_slot;
53 	int i_sense_slot;
54 	int volume_lvl;
55 	int model_id;
56 	bool dac_powered;
57 	bool unmuted;
58 };
59 
60 enum tas256x_model {
61 	TAS2562,
62 	TAS2563,
63 	TAS2564,
64 	TAS2110,
65 };
66 
tas2562_set_samplerate(struct tas2562_data * tas2562,int samplerate)67 static int tas2562_set_samplerate(struct tas2562_data *tas2562, int samplerate)
68 {
69 	int samp_rate;
70 	int ramp_rate;
71 
72 	switch (samplerate) {
73 	case 7350:
74 		ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
75 		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_7305_8KHZ;
76 		break;
77 	case 8000:
78 		ramp_rate = 0;
79 		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_7305_8KHZ;
80 		break;
81 	case 14700:
82 		ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
83 		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_14_7_16KHZ;
84 		break;
85 	case 16000:
86 		ramp_rate = 0;
87 		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_14_7_16KHZ;
88 		break;
89 	case 22050:
90 		ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
91 		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_22_05_24KHZ;
92 		break;
93 	case 24000:
94 		ramp_rate = 0;
95 		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_22_05_24KHZ;
96 		break;
97 	case 29400:
98 		ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
99 		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_29_4_32KHZ;
100 		break;
101 	case 32000:
102 		ramp_rate = 0;
103 		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_29_4_32KHZ;
104 		break;
105 	case 44100:
106 		ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
107 		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_44_1_48KHZ;
108 		break;
109 	case 48000:
110 		ramp_rate = 0;
111 		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_44_1_48KHZ;
112 		break;
113 	case 88200:
114 		ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
115 		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_88_2_96KHZ;
116 		break;
117 	case 96000:
118 		ramp_rate = 0;
119 		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_88_2_96KHZ;
120 		break;
121 	case 176400:
122 		ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
123 		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_176_4_192KHZ;
124 		break;
125 	case 192000:
126 		ramp_rate = 0;
127 		samp_rate = TAS2562_TDM_CFG0_SAMPRATE_176_4_192KHZ;
128 		break;
129 	default:
130 		dev_info(tas2562->dev, "%s, unsupported sample rate, %d\n",
131 			__func__, samplerate);
132 		return -EINVAL;
133 	}
134 
135 	snd_soc_component_update_bits(tas2562->component, TAS2562_TDM_CFG0,
136 		TAS2562_TDM_CFG0_RAMPRATE_MASK,	ramp_rate);
137 	snd_soc_component_update_bits(tas2562->component, TAS2562_TDM_CFG0,
138 		TAS2562_TDM_CFG0_SAMPRATE_MASK,	samp_rate);
139 
140 	return 0;
141 }
142 
tas2562_set_dai_tdm_slot(struct snd_soc_dai * dai,unsigned int tx_mask,unsigned int rx_mask,int slots,int slot_width)143 static int tas2562_set_dai_tdm_slot(struct snd_soc_dai *dai,
144 		unsigned int tx_mask, unsigned int rx_mask,
145 		int slots, int slot_width)
146 {
147 	struct snd_soc_component *component = dai->component;
148 	struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component);
149 	int left_slot, right_slot;
150 	int slots_cfg;
151 	int ret;
152 
153 	if (!tx_mask) {
154 		dev_err(component->dev, "tx masks must not be 0\n");
155 		return -EINVAL;
156 	}
157 
158 	if (slots == 1) {
159 		if (tx_mask != 1)
160 			return -EINVAL;
161 
162 		left_slot = 0;
163 		right_slot = 0;
164 	} else {
165 		left_slot = __ffs(tx_mask);
166 		tx_mask &= ~(1 << left_slot);
167 		if (tx_mask == 0) {
168 			right_slot = left_slot;
169 		} else {
170 			right_slot = __ffs(tx_mask);
171 		}
172 	}
173 
174 	slots_cfg = (right_slot << TAS2562_RIGHT_SLOT_SHIFT) | left_slot;
175 
176 	ret = snd_soc_component_write(component, TAS2562_TDM_CFG3, slots_cfg);
177 	if (ret < 0)
178 		return ret;
179 
180 	switch (slot_width) {
181 	case 16:
182 		ret = snd_soc_component_update_bits(component,
183 						    TAS2562_TDM_CFG2,
184 						    TAS2562_TDM_CFG2_RXLEN_MASK,
185 						    TAS2562_TDM_CFG2_RXLEN_16B);
186 		break;
187 	case 24:
188 		ret = snd_soc_component_update_bits(component,
189 						    TAS2562_TDM_CFG2,
190 						    TAS2562_TDM_CFG2_RXLEN_MASK,
191 						    TAS2562_TDM_CFG2_RXLEN_24B);
192 		break;
193 	case 32:
194 		ret = snd_soc_component_update_bits(component,
195 						    TAS2562_TDM_CFG2,
196 						    TAS2562_TDM_CFG2_RXLEN_MASK,
197 						    TAS2562_TDM_CFG2_RXLEN_32B);
198 		break;
199 
200 	case 0:
201 		/* Do not change slot width */
202 		break;
203 	default:
204 		dev_err(tas2562->dev, "slot width not supported");
205 		ret = -EINVAL;
206 	}
207 
208 	if (ret < 0)
209 		return ret;
210 
211 	ret = snd_soc_component_update_bits(component, TAS2562_TDM_CFG5,
212 					    TAS2562_TDM_CFG5_VSNS_SLOT_MASK,
213 					    tas2562->v_sense_slot);
214 	if (ret < 0)
215 		return ret;
216 
217 	ret = snd_soc_component_update_bits(component, TAS2562_TDM_CFG6,
218 					    TAS2562_TDM_CFG6_ISNS_SLOT_MASK,
219 					    tas2562->i_sense_slot);
220 	if (ret < 0)
221 		return ret;
222 
223 	return 0;
224 }
225 
tas2562_set_bitwidth(struct tas2562_data * tas2562,int bitwidth)226 static int tas2562_set_bitwidth(struct tas2562_data *tas2562, int bitwidth)
227 {
228 	int ret;
229 	int val;
230 	int sense_en;
231 
232 	switch (bitwidth) {
233 	case SNDRV_PCM_FORMAT_S16_LE:
234 		snd_soc_component_update_bits(tas2562->component,
235 					      TAS2562_TDM_CFG2,
236 					      TAS2562_TDM_CFG2_RXWLEN_MASK,
237 					      TAS2562_TDM_CFG2_RXWLEN_16B);
238 		break;
239 	case SNDRV_PCM_FORMAT_S24_LE:
240 		snd_soc_component_update_bits(tas2562->component,
241 					      TAS2562_TDM_CFG2,
242 					      TAS2562_TDM_CFG2_RXWLEN_MASK,
243 					      TAS2562_TDM_CFG2_RXWLEN_24B);
244 		break;
245 	case SNDRV_PCM_FORMAT_S32_LE:
246 		snd_soc_component_update_bits(tas2562->component,
247 					      TAS2562_TDM_CFG2,
248 					      TAS2562_TDM_CFG2_RXWLEN_MASK,
249 					      TAS2562_TDM_CFG2_RXWLEN_32B);
250 		break;
251 
252 	default:
253 		dev_info(tas2562->dev, "Unsupported bitwidth format\n");
254 		return -EINVAL;
255 	}
256 
257 	val = snd_soc_component_read(tas2562->component, TAS2562_PWR_CTRL);
258 	if (val < 0)
259 		return val;
260 
261 	if (val & (1 << TAS2562_VSENSE_POWER_EN))
262 		sense_en = 0;
263 	else
264 		sense_en = TAS2562_TDM_CFG5_VSNS_EN;
265 
266 	ret = snd_soc_component_update_bits(tas2562->component, TAS2562_TDM_CFG5,
267 		TAS2562_TDM_CFG5_VSNS_EN, sense_en);
268 	if (ret < 0)
269 		return ret;
270 
271 	if (val & (1 << TAS2562_ISENSE_POWER_EN))
272 		sense_en = 0;
273 	else
274 		sense_en = TAS2562_TDM_CFG6_ISNS_EN;
275 
276 	ret = snd_soc_component_update_bits(tas2562->component, TAS2562_TDM_CFG6,
277 		TAS2562_TDM_CFG6_ISNS_EN, sense_en);
278 	if (ret < 0)
279 		return ret;
280 
281 	return 0;
282 }
283 
tas2562_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)284 static int tas2562_hw_params(struct snd_pcm_substream *substream,
285 			     struct snd_pcm_hw_params *params,
286 			     struct snd_soc_dai *dai)
287 {
288 	struct snd_soc_component *component = dai->component;
289 	struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component);
290 	int ret;
291 
292 	ret = tas2562_set_bitwidth(tas2562, params_format(params));
293 	if (ret) {
294 		dev_err(tas2562->dev, "set bitwidth failed, %d\n", ret);
295 		return ret;
296 	}
297 
298 	ret = tas2562_set_samplerate(tas2562, params_rate(params));
299 	if (ret)
300 		dev_err(tas2562->dev, "set sample rate failed, %d\n", ret);
301 
302 	return ret;
303 }
304 
tas2562_set_dai_fmt(struct snd_soc_dai * dai,unsigned int fmt)305 static int tas2562_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
306 {
307 	struct snd_soc_component *component = dai->component;
308 	struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component);
309 	u8 asi_cfg_1 = 0;
310 	u8 tdm_rx_start_slot = 0;
311 	int ret;
312 
313 	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
314 	case SND_SOC_DAIFMT_NB_NF:
315 		asi_cfg_1 = 0;
316 		break;
317 	case SND_SOC_DAIFMT_IB_NF:
318 		asi_cfg_1 |= TAS2562_TDM_CFG1_RX_FALLING;
319 		break;
320 	default:
321 		dev_err(tas2562->dev, "ASI format Inverse is not found\n");
322 		return -EINVAL;
323 	}
324 
325 	ret = snd_soc_component_update_bits(component, TAS2562_TDM_CFG1,
326 					    TAS2562_TDM_CFG1_RX_EDGE_MASK,
327 					    asi_cfg_1);
328 	if (ret < 0) {
329 		dev_err(tas2562->dev, "Failed to set RX edge\n");
330 		return ret;
331 	}
332 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
333 	case SND_SOC_DAIFMT_LEFT_J:
334 	case SND_SOC_DAIFMT_DSP_B:
335 		tdm_rx_start_slot = 0;
336 		break;
337 	case SND_SOC_DAIFMT_I2S:
338 	case SND_SOC_DAIFMT_DSP_A:
339 		tdm_rx_start_slot = 1;
340 		break;
341 	default:
342 		dev_err(tas2562->dev,
343 			"DAI Format is not found, fmt=0x%x\n", fmt);
344 		return -EINVAL;
345 	}
346 
347 	ret = snd_soc_component_update_bits(component, TAS2562_TDM_CFG1,
348 				TAS2562_RX_OFF_MASK, (tdm_rx_start_slot << 1));
349 	if (ret < 0)
350 		return ret;
351 
352 	return 0;
353 }
354 
tas2562_update_pwr_ctrl(struct tas2562_data * tas2562)355 static int tas2562_update_pwr_ctrl(struct tas2562_data *tas2562)
356 {
357 	struct snd_soc_component *component = tas2562->component;
358 	unsigned int val;
359 	int ret;
360 
361 	if (tas2562->dac_powered)
362 		val = tas2562->unmuted ?
363 			TAS2562_ACTIVE : TAS2562_MUTE;
364 	else
365 		val = TAS2562_SHUTDOWN;
366 
367 	ret = snd_soc_component_update_bits(component, TAS2562_PWR_CTRL,
368 					    TAS2562_MODE_MASK, val);
369 	if (ret < 0)
370 		return ret;
371 
372 	return 0;
373 }
374 
tas2562_mute(struct snd_soc_dai * dai,int mute,int direction)375 static int tas2562_mute(struct snd_soc_dai *dai, int mute, int direction)
376 {
377 	struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(dai->component);
378 
379 	tas2562->unmuted = !mute;
380 	return tas2562_update_pwr_ctrl(tas2562);
381 }
382 
tas2562_codec_probe(struct snd_soc_component * component)383 static int tas2562_codec_probe(struct snd_soc_component *component)
384 {
385 	struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component);
386 
387 	tas2562->component = component;
388 
389 	if (tas2562->sdz_gpio)
390 		gpiod_set_value_cansleep(tas2562->sdz_gpio, 1);
391 
392 	return 0;
393 }
394 
395 #ifdef CONFIG_PM
tas2562_suspend(struct snd_soc_component * component)396 static int tas2562_suspend(struct snd_soc_component *component)
397 {
398 	struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component);
399 
400 	regcache_cache_only(tas2562->regmap, true);
401 	regcache_mark_dirty(tas2562->regmap);
402 
403 	if (tas2562->sdz_gpio)
404 		gpiod_set_value_cansleep(tas2562->sdz_gpio, 0);
405 
406 	return 0;
407 }
408 
tas2562_resume(struct snd_soc_component * component)409 static int tas2562_resume(struct snd_soc_component *component)
410 {
411 	struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component);
412 
413 	if (tas2562->sdz_gpio)
414 		gpiod_set_value_cansleep(tas2562->sdz_gpio, 1);
415 
416 	regcache_cache_only(tas2562->regmap, false);
417 
418 	return regcache_sync(tas2562->regmap);
419 }
420 #else
421 #define tas2562_suspend NULL
422 #define tas2562_resume NULL
423 #endif
424 
425 static const char * const tas2562_ASI1_src[] = {
426 	"I2C offset", "Left", "Right", "LeftRightDiv2",
427 };
428 
429 static SOC_ENUM_SINGLE_DECL(tas2562_ASI1_src_enum, TAS2562_TDM_CFG2, 4,
430 			    tas2562_ASI1_src);
431 
432 static const struct snd_kcontrol_new tas2562_asi1_mux =
433 	SOC_DAPM_ENUM("ASI1 Source", tas2562_ASI1_src_enum);
434 
tas2562_dac_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)435 static int tas2562_dac_event(struct snd_soc_dapm_widget *w,
436 			     struct snd_kcontrol *kcontrol, int event)
437 {
438 	struct snd_soc_component *component =
439 					snd_soc_dapm_to_component(w->dapm);
440 	struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component);
441 	int ret = 0;
442 
443 	switch (event) {
444 	case SND_SOC_DAPM_POST_PMU:
445 		tas2562->dac_powered = true;
446 		ret = tas2562_update_pwr_ctrl(tas2562);
447 		break;
448 	case SND_SOC_DAPM_PRE_PMD:
449 		tas2562->dac_powered = false;
450 		ret = tas2562_update_pwr_ctrl(tas2562);
451 		break;
452 	default:
453 		dev_err(tas2562->dev, "Not supported evevt\n");
454 		return -EINVAL;
455 	}
456 
457 	return ret;
458 }
459 
tas2562_volume_control_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)460 static int tas2562_volume_control_get(struct snd_kcontrol *kcontrol,
461 				      struct snd_ctl_elem_value *ucontrol)
462 {
463 	struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
464 	struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component);
465 
466 	ucontrol->value.integer.value[0] = tas2562->volume_lvl;
467 	return 0;
468 }
469 
tas2562_volume_control_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)470 static int tas2562_volume_control_put(struct snd_kcontrol *kcontrol,
471 				      struct snd_ctl_elem_value *ucontrol)
472 {
473 	struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
474 	struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component);
475 	int ret;
476 	u32 reg_val;
477 
478 	reg_val = float_vol_db_lookup[ucontrol->value.integer.value[0]/2];
479 	ret = snd_soc_component_write(component, TAS2562_DVC_CFG4,
480 				      (reg_val & 0xff));
481 	if (ret)
482 		return ret;
483 	ret = snd_soc_component_write(component, TAS2562_DVC_CFG3,
484 				      ((reg_val >> 8) & 0xff));
485 	if (ret)
486 		return ret;
487 	ret = snd_soc_component_write(component, TAS2562_DVC_CFG2,
488 				      ((reg_val >> 16) & 0xff));
489 	if (ret)
490 		return ret;
491 	ret = snd_soc_component_write(component, TAS2562_DVC_CFG1,
492 				      ((reg_val >> 24) & 0xff));
493 	if (ret)
494 		return ret;
495 
496 	tas2562->volume_lvl = ucontrol->value.integer.value[0];
497 
498 	return 0;
499 }
500 
501 /* Digital Volume Control. From 0 dB to -110 dB in 1 dB steps */
502 static const DECLARE_TLV_DB_SCALE(dvc_tlv, -11000, 100, 0);
503 
504 static DECLARE_TLV_DB_SCALE(tas2562_dac_tlv, 850, 50, 0);
505 
506 static const struct snd_kcontrol_new isense_switch =
507 	SOC_DAPM_SINGLE("Switch", TAS2562_PWR_CTRL, TAS2562_ISENSE_POWER_EN,
508 			1, 1);
509 
510 static const struct snd_kcontrol_new vsense_switch =
511 	SOC_DAPM_SINGLE("Switch", TAS2562_PWR_CTRL, TAS2562_VSENSE_POWER_EN,
512 			1, 1);
513 
514 static const struct snd_kcontrol_new tas2562_snd_controls[] = {
515 	SOC_SINGLE_TLV("Amp Gain Volume", TAS2562_PB_CFG1, 1, 0x1c, 0,
516 		       tas2562_dac_tlv),
517 	{
518 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
519 		.name = "Digital Volume Control",
520 		.index = 0,
521 		.tlv.p = dvc_tlv,
522 		.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | SNDRV_CTL_ELEM_ACCESS_READWRITE,
523 		.info = snd_soc_info_volsw,
524 		.get = tas2562_volume_control_get,
525 		.put = tas2562_volume_control_put,
526 		.private_value = SOC_SINGLE_VALUE(TAS2562_DVC_CFG1, 0, 110, 0, 0),
527 	},
528 };
529 
530 static const struct snd_soc_dapm_widget tas2110_dapm_widgets[] = {
531 	SND_SOC_DAPM_AIF_IN("ASI1", "ASI1 Playback", 0, SND_SOC_NOPM, 0, 0),
532 	SND_SOC_DAPM_MUX("ASI1 Sel", SND_SOC_NOPM, 0, 0, &tas2562_asi1_mux),
533 	SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2562_dac_event,
534 			   SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
535 	SND_SOC_DAPM_OUTPUT("OUT"),
536 };
537 
538 static const struct snd_soc_dapm_route tas2110_audio_map[] = {
539 	{"ASI1 Sel", "I2C offset", "ASI1"},
540 	{"ASI1 Sel", "Left", "ASI1"},
541 	{"ASI1 Sel", "Right", "ASI1"},
542 	{"ASI1 Sel", "LeftRightDiv2", "ASI1"},
543 	{ "DAC", NULL, "ASI1 Sel" },
544 	{ "OUT", NULL, "DAC" },
545 };
546 
547 static const struct snd_soc_component_driver soc_component_dev_tas2110 = {
548 	.probe			= tas2562_codec_probe,
549 	.suspend		= tas2562_suspend,
550 	.resume			= tas2562_resume,
551 	.controls		= tas2562_snd_controls,
552 	.num_controls		= ARRAY_SIZE(tas2562_snd_controls),
553 	.dapm_widgets		= tas2110_dapm_widgets,
554 	.num_dapm_widgets	= ARRAY_SIZE(tas2110_dapm_widgets),
555 	.dapm_routes		= tas2110_audio_map,
556 	.num_dapm_routes	= ARRAY_SIZE(tas2110_audio_map),
557 	.idle_bias_on		= 1,
558 	.use_pmdown_time	= 1,
559 	.endianness		= 1,
560 };
561 
562 static const struct snd_soc_dapm_widget tas2562_dapm_widgets[] = {
563 	SND_SOC_DAPM_AIF_IN("ASI1", "ASI1 Playback", 0, SND_SOC_NOPM, 0, 0),
564 	SND_SOC_DAPM_MUX("ASI1 Sel", SND_SOC_NOPM, 0, 0, &tas2562_asi1_mux),
565 	SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2562_dac_event,
566 			   SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
567 	SND_SOC_DAPM_SWITCH("ISENSE", TAS2562_PWR_CTRL, 3, 1, &isense_switch),
568 	SND_SOC_DAPM_SWITCH("VSENSE", TAS2562_PWR_CTRL, 2, 1, &vsense_switch),
569 	SND_SOC_DAPM_SIGGEN("VMON"),
570 	SND_SOC_DAPM_SIGGEN("IMON"),
571 	SND_SOC_DAPM_OUTPUT("OUT"),
572 };
573 
574 static const struct snd_soc_dapm_route tas2562_audio_map[] = {
575 	{"ASI1 Sel", "I2C offset", "ASI1"},
576 	{"ASI1 Sel", "Left", "ASI1"},
577 	{"ASI1 Sel", "Right", "ASI1"},
578 	{"ASI1 Sel", "LeftRightDiv2", "ASI1"},
579 	{ "DAC", NULL, "ASI1 Sel" },
580 	{ "OUT", NULL, "DAC" },
581 	{"ISENSE", "Switch", "IMON"},
582 	{"VSENSE", "Switch", "VMON"},
583 };
584 
585 static const struct snd_soc_component_driver soc_component_dev_tas2562 = {
586 	.probe			= tas2562_codec_probe,
587 	.suspend		= tas2562_suspend,
588 	.resume			= tas2562_resume,
589 	.controls		= tas2562_snd_controls,
590 	.num_controls		= ARRAY_SIZE(tas2562_snd_controls),
591 	.dapm_widgets		= tas2562_dapm_widgets,
592 	.num_dapm_widgets	= ARRAY_SIZE(tas2562_dapm_widgets),
593 	.dapm_routes		= tas2562_audio_map,
594 	.num_dapm_routes	= ARRAY_SIZE(tas2562_audio_map),
595 	.idle_bias_on		= 1,
596 	.use_pmdown_time	= 1,
597 	.endianness		= 1,
598 };
599 
600 static const struct snd_soc_dai_ops tas2562_speaker_dai_ops = {
601 	.hw_params	= tas2562_hw_params,
602 	.set_fmt	= tas2562_set_dai_fmt,
603 	.set_tdm_slot	= tas2562_set_dai_tdm_slot,
604 	.mute_stream	= tas2562_mute,
605 	.no_capture_mute = 1,
606 };
607 
608 static struct snd_soc_dai_driver tas2562_dai[] = {
609 	{
610 		.name = "tas2562-amplifier",
611 		.id = 0,
612 		.playback = {
613 			.stream_name    = "ASI1 Playback",
614 			.channels_min   = 2,
615 			.channels_max   = 2,
616 			.rates      = SNDRV_PCM_RATE_8000_192000,
617 			.formats    = TAS2562_FORMATS,
618 		},
619 		.capture = {
620 			.stream_name    = "ASI1 Capture",
621 			.channels_min   = 0,
622 			.channels_max   = 2,
623 			.rates		= SNDRV_PCM_RATE_8000_192000,
624 			.formats	= TAS2562_FORMATS,
625 		},
626 		.ops = &tas2562_speaker_dai_ops,
627 	},
628 };
629 
630 static const struct regmap_range_cfg tas2562_ranges[] = {
631 	{
632 		.range_min = 0,
633 		.range_max = 5 * 128,
634 		.selector_reg = TAS2562_PAGE_CTRL,
635 		.selector_mask = 0xff,
636 		.selector_shift = 0,
637 		.window_start = 0,
638 		.window_len = 128,
639 	},
640 };
641 
642 static const struct reg_default tas2562_reg_defaults[] = {
643 	{ TAS2562_PAGE_CTRL, 0x00 },
644 	{ TAS2562_SW_RESET, 0x00 },
645 	{ TAS2562_PWR_CTRL, 0x0e },
646 	{ TAS2562_PB_CFG1, 0x20 },
647 	{ TAS2562_TDM_CFG0, 0x09 },
648 	{ TAS2562_TDM_CFG1, 0x02 },
649 	{ TAS2562_DVC_CFG1, 0x40 },
650 	{ TAS2562_DVC_CFG2, 0x40 },
651 	{ TAS2562_DVC_CFG3, 0x00 },
652 	{ TAS2562_DVC_CFG4, 0x00 },
653 };
654 
655 static const struct regmap_config tas2562_regmap_config = {
656 	.reg_bits = 8,
657 	.val_bits = 8,
658 
659 	.max_register = 5 * 128,
660 	.cache_type = REGCACHE_RBTREE,
661 	.reg_defaults = tas2562_reg_defaults,
662 	.num_reg_defaults = ARRAY_SIZE(tas2562_reg_defaults),
663 	.ranges = tas2562_ranges,
664 	.num_ranges = ARRAY_SIZE(tas2562_ranges),
665 };
666 
tas2562_parse_dt(struct tas2562_data * tas2562)667 static int tas2562_parse_dt(struct tas2562_data *tas2562)
668 {
669 	struct device *dev = tas2562->dev;
670 	int ret = 0;
671 
672 	tas2562->sdz_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH);
673 	if (IS_ERR(tas2562->sdz_gpio)) {
674 		if (PTR_ERR(tas2562->sdz_gpio) == -EPROBE_DEFER)
675 			return -EPROBE_DEFER;
676 
677 		tas2562->sdz_gpio = NULL;
678 	}
679 
680 	/*
681 	 * The shut-down property is deprecated but needs to be checked for
682 	 * backwards compatibility.
683 	 */
684 	if (tas2562->sdz_gpio == NULL) {
685 		tas2562->sdz_gpio = devm_gpiod_get_optional(dev, "shut-down",
686 							      GPIOD_OUT_HIGH);
687 		if (IS_ERR(tas2562->sdz_gpio))
688 			if (PTR_ERR(tas2562->sdz_gpio) == -EPROBE_DEFER)
689 				return -EPROBE_DEFER;
690 
691 		tas2562->sdz_gpio = NULL;
692 	}
693 
694 	if (tas2562->model_id == TAS2110)
695 		return ret;
696 
697 	ret = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no",
698 			&tas2562->i_sense_slot);
699 	if (ret) {
700 		dev_err(dev, "Property %s is missing setting default slot\n",
701 			"ti,imon-slot-no");
702 		tas2562->i_sense_slot = 0;
703 	}
704 
705 
706 	ret = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no",
707 			&tas2562->v_sense_slot);
708 	if (ret) {
709 		dev_info(dev, "Property %s is missing setting default slot\n",
710 			"ti,vmon-slot-no");
711 		tas2562->v_sense_slot = 2;
712 	}
713 
714 	if (tas2562->v_sense_slot < tas2562->i_sense_slot) {
715 		dev_err(dev, "Vsense slot must be greater than Isense slot\n");
716 		return -EINVAL;
717 	}
718 
719 	return ret;
720 }
721 
722 static const struct i2c_device_id tas2562_id[] = {
723 	{ "tas2562", TAS2562 },
724 	{ "tas2563", TAS2563 },
725 	{ "tas2564", TAS2564 },
726 	{ "tas2110", TAS2110 },
727 	{ }
728 };
729 MODULE_DEVICE_TABLE(i2c, tas2562_id);
730 
tas2562_probe(struct i2c_client * client)731 static int tas2562_probe(struct i2c_client *client)
732 {
733 	struct device *dev = &client->dev;
734 	struct tas2562_data *data;
735 	int ret;
736 	const struct i2c_device_id *id;
737 
738 	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
739 	if (!data)
740 		return -ENOMEM;
741 
742 	id = i2c_match_id(tas2562_id, client);
743 	data->client = client;
744 	data->dev = &client->dev;
745 	data->model_id = id->driver_data;
746 
747 	tas2562_parse_dt(data);
748 
749 	data->regmap = devm_regmap_init_i2c(client, &tas2562_regmap_config);
750 	if (IS_ERR(data->regmap)) {
751 		ret = PTR_ERR(data->regmap);
752 		dev_err(dev, "failed to allocate register map: %d\n", ret);
753 		return ret;
754 	}
755 
756 	dev_set_drvdata(&client->dev, data);
757 
758 	if (data->model_id == TAS2110)
759 		return devm_snd_soc_register_component(dev,
760 						       &soc_component_dev_tas2110,
761 						       tas2562_dai,
762 						       ARRAY_SIZE(tas2562_dai));
763 
764 	return devm_snd_soc_register_component(dev, &soc_component_dev_tas2562,
765 					       tas2562_dai,
766 					       ARRAY_SIZE(tas2562_dai));
767 
768 }
769 
770 #ifdef CONFIG_OF
771 static const struct of_device_id tas2562_of_match[] = {
772 	{ .compatible = "ti,tas2562", },
773 	{ .compatible = "ti,tas2563", },
774 	{ .compatible = "ti,tas2564", },
775 	{ .compatible = "ti,tas2110", },
776 	{ },
777 };
778 MODULE_DEVICE_TABLE(of, tas2562_of_match);
779 #endif
780 
781 static struct i2c_driver tas2562_i2c_driver = {
782 	.driver = {
783 		.name = "tas2562",
784 		.of_match_table = of_match_ptr(tas2562_of_match),
785 	},
786 	.probe = tas2562_probe,
787 	.id_table = tas2562_id,
788 };
789 
790 module_i2c_driver(tas2562_i2c_driver);
791 
792 MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
793 MODULE_DESCRIPTION("TAS2562 Audio amplifier driver");
794 MODULE_LICENSE("GPL");
795