xref: /openbmc/linux/sound/soc/codecs/max98371.c (revision 9abcd240)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * max98371.c -- ALSA SoC Stereo MAX98371 driver
4  *
5  * Copyright 2015-16 Maxim Integrated Products
6  */
7 
8 #include <linux/i2c.h>
9 #include <linux/module.h>
10 #include <linux/regmap.h>
11 #include <linux/slab.h>
12 #include <sound/pcm.h>
13 #include <sound/pcm_params.h>
14 #include <sound/soc.h>
15 #include <sound/tlv.h>
16 #include "max98371.h"
17 
18 static const char *const monomix_text[] = {
19 	"Left", "Right", "LeftRightDiv2",
20 };
21 
22 static const char *const hpf_cutoff_txt[] = {
23 	"Disable", "DC Block", "50Hz",
24 	"100Hz", "200Hz", "400Hz", "800Hz",
25 };
26 
27 static SOC_ENUM_SINGLE_DECL(max98371_monomix, MAX98371_MONOMIX_CFG, 0,
28 		monomix_text);
29 
30 static SOC_ENUM_SINGLE_DECL(max98371_hpf_cutoff, MAX98371_HPF, 0,
31 		hpf_cutoff_txt);
32 
33 static const DECLARE_TLV_DB_RANGE(max98371_dht_min_gain,
34 	0, 1, TLV_DB_SCALE_ITEM(537, 66, 0),
35 	2, 3, TLV_DB_SCALE_ITEM(677, 82, 0),
36 	4, 5, TLV_DB_SCALE_ITEM(852, 104, 0),
37 	6, 7, TLV_DB_SCALE_ITEM(1072, 131, 0),
38 	8, 9, TLV_DB_SCALE_ITEM(1350, 165, 0),
39 	10, 11, TLV_DB_SCALE_ITEM(1699, 101, 0),
40 );
41 
42 static const DECLARE_TLV_DB_RANGE(max98371_dht_max_gain,
43 	0, 1, TLV_DB_SCALE_ITEM(537, 66, 0),
44 	2, 3, TLV_DB_SCALE_ITEM(677, 82, 0),
45 	4, 5, TLV_DB_SCALE_ITEM(852, 104, 0),
46 	6, 7, TLV_DB_SCALE_ITEM(1072, 131, 0),
47 	8, 9, TLV_DB_SCALE_ITEM(1350, 165, 0),
48 	10, 11, TLV_DB_SCALE_ITEM(1699, 208, 0),
49 );
50 
51 static const DECLARE_TLV_DB_RANGE(max98371_dht_rot_gain,
52 	0, 1, TLV_DB_SCALE_ITEM(-50, -50, 0),
53 	2, 6, TLV_DB_SCALE_ITEM(-100, -100, 0),
54 	7, 8, TLV_DB_SCALE_ITEM(-800, -200, 0),
55 	9, 11, TLV_DB_SCALE_ITEM(-1200, -300, 0),
56 	12, 13, TLV_DB_SCALE_ITEM(-2000, -200, 0),
57 	14, 15, TLV_DB_SCALE_ITEM(-2500, -500, 0),
58 );
59 
60 static const struct reg_default max98371_reg[] = {
61 	{ 0x01, 0x00 },
62 	{ 0x02, 0x00 },
63 	{ 0x03, 0x00 },
64 	{ 0x04, 0x00 },
65 	{ 0x05, 0x00 },
66 	{ 0x06, 0x00 },
67 	{ 0x07, 0x00 },
68 	{ 0x08, 0x00 },
69 	{ 0x09, 0x00 },
70 	{ 0x0A, 0x00 },
71 	{ 0x10, 0x06 },
72 	{ 0x11, 0x08 },
73 	{ 0x14, 0x80 },
74 	{ 0x15, 0x00 },
75 	{ 0x16, 0x00 },
76 	{ 0x18, 0x00 },
77 	{ 0x19, 0x00 },
78 	{ 0x1C, 0x00 },
79 	{ 0x1D, 0x00 },
80 	{ 0x1E, 0x00 },
81 	{ 0x1F, 0x00 },
82 	{ 0x20, 0x00 },
83 	{ 0x21, 0x00 },
84 	{ 0x22, 0x00 },
85 	{ 0x23, 0x00 },
86 	{ 0x24, 0x00 },
87 	{ 0x25, 0x00 },
88 	{ 0x26, 0x00 },
89 	{ 0x27, 0x00 },
90 	{ 0x28, 0x00 },
91 	{ 0x29, 0x00 },
92 	{ 0x2A, 0x00 },
93 	{ 0x2B, 0x00 },
94 	{ 0x2C, 0x00 },
95 	{ 0x2D, 0x00 },
96 	{ 0x2E, 0x0B },
97 	{ 0x31, 0x00 },
98 	{ 0x32, 0x18 },
99 	{ 0x33, 0x00 },
100 	{ 0x34, 0x00 },
101 	{ 0x36, 0x00 },
102 	{ 0x37, 0x00 },
103 	{ 0x38, 0x00 },
104 	{ 0x39, 0x00 },
105 	{ 0x3A, 0x00 },
106 	{ 0x3B, 0x00 },
107 	{ 0x3C, 0x00 },
108 	{ 0x3D, 0x00 },
109 	{ 0x3E, 0x00 },
110 	{ 0x3F, 0x00 },
111 	{ 0x40, 0x00 },
112 	{ 0x41, 0x00 },
113 	{ 0x42, 0x00 },
114 	{ 0x43, 0x00 },
115 	{ 0x4A, 0x00 },
116 	{ 0x4B, 0x00 },
117 	{ 0x4C, 0x00 },
118 	{ 0x4D, 0x00 },
119 	{ 0x4E, 0x00 },
120 	{ 0x50, 0x00 },
121 	{ 0x51, 0x00 },
122 	{ 0x55, 0x00 },
123 	{ 0x58, 0x00 },
124 	{ 0x59, 0x00 },
125 	{ 0x5C, 0x00 },
126 	{ 0xFF, 0x43 },
127 };
128 
max98371_volatile_register(struct device * dev,unsigned int reg)129 static bool max98371_volatile_register(struct device *dev, unsigned int reg)
130 {
131 	switch (reg) {
132 	case MAX98371_IRQ_CLEAR1:
133 	case MAX98371_IRQ_CLEAR2:
134 	case MAX98371_IRQ_CLEAR3:
135 	case MAX98371_VERSION:
136 		return true;
137 	default:
138 		return false;
139 	}
140 }
141 
max98371_readable_register(struct device * dev,unsigned int reg)142 static bool max98371_readable_register(struct device *dev, unsigned int reg)
143 {
144 	switch (reg) {
145 	case MAX98371_SOFT_RESET:
146 		return false;
147 	default:
148 		return true;
149 	}
150 };
151 
152 static const DECLARE_TLV_DB_RANGE(max98371_gain_tlv,
153 	0, 7, TLV_DB_SCALE_ITEM(0, 50, 0),
154 	8, 10, TLV_DB_SCALE_ITEM(400, 100, 0)
155 );
156 
157 static const DECLARE_TLV_DB_SCALE(digital_tlv, -6300, 50, 1);
158 
159 static const struct snd_kcontrol_new max98371_snd_controls[] = {
160 	SOC_SINGLE_TLV("Speaker Volume", MAX98371_GAIN,
161 			MAX98371_GAIN_SHIFT, (1<<MAX98371_GAIN_WIDTH)-1, 0,
162 			max98371_gain_tlv),
163 	SOC_SINGLE_TLV("Digital Volume", MAX98371_DIGITAL_GAIN, 0,
164 			(1<<MAX98371_DIGITAL_GAIN_WIDTH)-1, 1, digital_tlv),
165 	SOC_SINGLE_TLV("Speaker DHT Max Volume", MAX98371_GAIN,
166 			0, (1<<MAX98371_DHT_MAX_WIDTH)-1, 0,
167 			max98371_dht_max_gain),
168 	SOC_SINGLE_TLV("Speaker DHT Min Volume", MAX98371_DHT_GAIN,
169 			0, (1<<MAX98371_DHT_GAIN_WIDTH)-1, 0,
170 			max98371_dht_min_gain),
171 	SOC_SINGLE_TLV("Speaker DHT Rotation Volume", MAX98371_DHT_GAIN,
172 			0, (1<<MAX98371_DHT_ROT_WIDTH)-1, 0,
173 			max98371_dht_rot_gain),
174 	SOC_SINGLE("DHT Attack Step", MAX98371_DHT, MAX98371_DHT_STEP, 3, 0),
175 	SOC_SINGLE("DHT Attack Rate", MAX98371_DHT, 0, 7, 0),
176 	SOC_ENUM("Monomix Select", max98371_monomix),
177 	SOC_ENUM("HPF Cutoff", max98371_hpf_cutoff),
178 };
179 
max98371_dai_set_fmt(struct snd_soc_dai * codec_dai,unsigned int fmt)180 static int max98371_dai_set_fmt(struct snd_soc_dai *codec_dai,
181 		unsigned int fmt)
182 {
183 	struct snd_soc_component *component = codec_dai->component;
184 	struct max98371_priv *max98371 = snd_soc_component_get_drvdata(component);
185 	unsigned int val = 0;
186 
187 	switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
188 	case SND_SOC_DAIFMT_CBC_CFC:
189 		break;
190 	default:
191 		dev_err(component->dev, "DAI clock mode unsupported");
192 		return -EINVAL;
193 	}
194 
195 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
196 	case SND_SOC_DAIFMT_I2S:
197 		val |= 0;
198 		break;
199 	case SND_SOC_DAIFMT_RIGHT_J:
200 		val |= MAX98371_DAI_RIGHT;
201 		break;
202 	case SND_SOC_DAIFMT_LEFT_J:
203 		val |= MAX98371_DAI_LEFT;
204 		break;
205 	default:
206 		dev_err(component->dev, "DAI wrong mode unsupported");
207 		return -EINVAL;
208 	}
209 	regmap_update_bits(max98371->regmap, MAX98371_FMT,
210 			MAX98371_FMT_MODE_MASK, val);
211 	return 0;
212 }
213 
max98371_dai_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)214 static int max98371_dai_hw_params(struct snd_pcm_substream *substream,
215 		struct snd_pcm_hw_params *params,
216 		struct snd_soc_dai *dai)
217 {
218 	struct snd_soc_component *component = dai->component;
219 	struct max98371_priv *max98371 = snd_soc_component_get_drvdata(component);
220 	int blr_clk_ratio, ch_size, channels = params_channels(params);
221 	int rate = params_rate(params);
222 
223 	switch (params_format(params)) {
224 	case SNDRV_PCM_FORMAT_S8:
225 		regmap_update_bits(max98371->regmap, MAX98371_FMT,
226 				MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16);
227 		ch_size = 8;
228 		break;
229 	case SNDRV_PCM_FORMAT_S16_LE:
230 		regmap_update_bits(max98371->regmap, MAX98371_FMT,
231 				MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16);
232 		ch_size = 16;
233 		break;
234 	case SNDRV_PCM_FORMAT_S24_LE:
235 		regmap_update_bits(max98371->regmap, MAX98371_FMT,
236 				MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32);
237 		ch_size = 24;
238 		break;
239 	case SNDRV_PCM_FORMAT_S32_LE:
240 		regmap_update_bits(max98371->regmap, MAX98371_FMT,
241 				MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32);
242 		ch_size = 32;
243 		break;
244 	default:
245 		return -EINVAL;
246 	}
247 
248 	/* BCLK/LRCLK ratio calculation */
249 	blr_clk_ratio = channels * ch_size;
250 	switch (blr_clk_ratio) {
251 	case 32:
252 		regmap_update_bits(max98371->regmap,
253 			MAX98371_DAI_CLK,
254 			MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_32);
255 		break;
256 	case 48:
257 		regmap_update_bits(max98371->regmap,
258 			MAX98371_DAI_CLK,
259 			MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_48);
260 		break;
261 	case 64:
262 		regmap_update_bits(max98371->regmap,
263 			MAX98371_DAI_CLK,
264 			MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_64);
265 		break;
266 	default:
267 		return -EINVAL;
268 	}
269 
270 	switch (rate) {
271 	case 32000:
272 		regmap_update_bits(max98371->regmap,
273 			MAX98371_SPK_SR,
274 			MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_32);
275 		break;
276 	case 44100:
277 		regmap_update_bits(max98371->regmap,
278 			MAX98371_SPK_SR,
279 			MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_44);
280 		break;
281 	case 48000:
282 		regmap_update_bits(max98371->regmap,
283 			MAX98371_SPK_SR,
284 			MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_48);
285 		break;
286 	case 88200:
287 		regmap_update_bits(max98371->regmap,
288 			MAX98371_SPK_SR,
289 			MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_88);
290 		break;
291 	case 96000:
292 		regmap_update_bits(max98371->regmap,
293 			MAX98371_SPK_SR,
294 			MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_96);
295 		break;
296 	default:
297 		return -EINVAL;
298 	}
299 
300 	/* enabling both the RX channels*/
301 	regmap_update_bits(max98371->regmap, MAX98371_MONOMIX_SRC,
302 			MAX98371_MONOMIX_SRC_MASK, MONOMIX_RX_0_1);
303 	regmap_update_bits(max98371->regmap, MAX98371_DAI_CHANNEL,
304 			MAX98371_CHANNEL_MASK, MAX98371_CHANNEL_MASK);
305 	return 0;
306 }
307 
308 static const struct snd_soc_dapm_widget max98371_dapm_widgets[] = {
309 	SND_SOC_DAPM_DAC("DAC", NULL, MAX98371_SPK_ENABLE, 0, 0),
310 	SND_SOC_DAPM_SUPPLY("Global Enable", MAX98371_GLOBAL_ENABLE,
311 		0, 0, NULL, 0),
312 	SND_SOC_DAPM_OUTPUT("SPK_OUT"),
313 };
314 
315 static const struct snd_soc_dapm_route max98371_audio_map[] = {
316 	{"DAC", NULL, "HiFi Playback"},
317 	{"SPK_OUT", NULL, "DAC"},
318 	{"SPK_OUT", NULL, "Global Enable"},
319 };
320 
321 #define MAX98371_RATES SNDRV_PCM_RATE_8000_48000
322 #define MAX98371_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE | \
323 		SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE)
324 
325 static const struct snd_soc_dai_ops max98371_dai_ops = {
326 	.set_fmt = max98371_dai_set_fmt,
327 	.hw_params = max98371_dai_hw_params,
328 };
329 
330 static struct snd_soc_dai_driver max98371_dai[] = {
331 	{
332 		.name = "max98371-aif1",
333 		.playback = {
334 			.stream_name = "HiFi Playback",
335 			.channels_min = 1,
336 			.channels_max = 2,
337 			.rates = SNDRV_PCM_RATE_8000_48000,
338 			.formats = MAX98371_FORMATS,
339 		},
340 		.ops = &max98371_dai_ops,
341 	}
342 };
343 
344 static const struct snd_soc_component_driver max98371_component = {
345 	.controls		= max98371_snd_controls,
346 	.num_controls		= ARRAY_SIZE(max98371_snd_controls),
347 	.dapm_routes		= max98371_audio_map,
348 	.num_dapm_routes	= ARRAY_SIZE(max98371_audio_map),
349 	.dapm_widgets		= max98371_dapm_widgets,
350 	.num_dapm_widgets	= ARRAY_SIZE(max98371_dapm_widgets),
351 	.idle_bias_on		= 1,
352 	.use_pmdown_time	= 1,
353 	.endianness		= 1,
354 };
355 
356 static const struct regmap_config max98371_regmap = {
357 	.reg_bits         = 8,
358 	.val_bits         = 8,
359 	.max_register     = MAX98371_VERSION,
360 	.reg_defaults     = max98371_reg,
361 	.num_reg_defaults = ARRAY_SIZE(max98371_reg),
362 	.volatile_reg     = max98371_volatile_register,
363 	.readable_reg     = max98371_readable_register,
364 	.cache_type       = REGCACHE_RBTREE,
365 };
366 
max98371_i2c_probe(struct i2c_client * i2c)367 static int max98371_i2c_probe(struct i2c_client *i2c)
368 {
369 	struct max98371_priv *max98371;
370 	int ret, reg;
371 
372 	max98371 = devm_kzalloc(&i2c->dev,
373 			sizeof(*max98371), GFP_KERNEL);
374 	if (!max98371)
375 		return -ENOMEM;
376 
377 	i2c_set_clientdata(i2c, max98371);
378 	max98371->regmap = devm_regmap_init_i2c(i2c, &max98371_regmap);
379 	if (IS_ERR(max98371->regmap)) {
380 		ret = PTR_ERR(max98371->regmap);
381 		dev_err(&i2c->dev,
382 				"Failed to allocate regmap: %d\n", ret);
383 		return ret;
384 	}
385 
386 	ret = regmap_read(max98371->regmap, MAX98371_VERSION, &reg);
387 	if (ret < 0) {
388 		dev_info(&i2c->dev, "device error %d\n", ret);
389 		return ret;
390 	}
391 	dev_info(&i2c->dev, "device version %x\n", reg);
392 
393 	ret = devm_snd_soc_register_component(&i2c->dev, &max98371_component,
394 			max98371_dai, ARRAY_SIZE(max98371_dai));
395 	if (ret < 0) {
396 		dev_err(&i2c->dev, "Failed to register component: %d\n", ret);
397 		return ret;
398 	}
399 	return ret;
400 }
401 
402 static const struct i2c_device_id max98371_i2c_id[] = {
403 	{ "max98371", 0 },
404 	{ }
405 };
406 
407 MODULE_DEVICE_TABLE(i2c, max98371_i2c_id);
408 
409 #ifdef CONFIG_OF
410 static const struct of_device_id max98371_of_match[] = {
411 	{ .compatible = "maxim,max98371", },
412 	{ }
413 };
414 MODULE_DEVICE_TABLE(of, max98371_of_match);
415 #endif
416 
417 static struct i2c_driver max98371_i2c_driver = {
418 	.driver = {
419 		.name = "max98371",
420 		.of_match_table = of_match_ptr(max98371_of_match),
421 	},
422 	.probe = max98371_i2c_probe,
423 	.id_table = max98371_i2c_id,
424 };
425 
426 module_i2c_driver(max98371_i2c_driver);
427 
428 MODULE_AUTHOR("anish kumar <yesanishhere@gmail.com>");
429 MODULE_DESCRIPTION("ALSA SoC MAX98371 driver");
430 MODULE_LICENSE("GPL");
431