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ca2cd6bc | 1 | /* |
2 | * max98371.c -- ALSA SoC Stereo MAX98371 driver | |
3 | * | |
4 | * Copyright 2015-16 Maxim Integrated Products | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <linux/i2c.h> | |
12 | #include <linux/module.h> | |
13 | #include <linux/regmap.h> | |
14 | #include <linux/slab.h> | |
15 | #include <sound/pcm.h> | |
16 | #include <sound/pcm_params.h> | |
17 | #include <sound/soc.h> | |
18 | #include <sound/tlv.h> | |
19 | #include "max98371.h" | |
20 | ||
21 | static const char *const monomix_text[] = { | |
22 | "Left", "Right", "LeftRightDiv2", | |
23 | }; | |
24 | ||
25 | static const char *const hpf_cutoff_txt[] = { | |
26 | "Disable", "DC Block", "50Hz", | |
27 | "100Hz", "200Hz", "400Hz", "800Hz", | |
28 | }; | |
29 | ||
30 | static SOC_ENUM_SINGLE_DECL(max98371_monomix, MAX98371_MONOMIX_CFG, 0, | |
31 | monomix_text); | |
32 | ||
33 | static SOC_ENUM_SINGLE_DECL(max98371_hpf_cutoff, MAX98371_HPF, 0, | |
34 | hpf_cutoff_txt); | |
35 | ||
36 | static const DECLARE_TLV_DB_RANGE(max98371_dht_min_gain, | |
37 | 0, 1, TLV_DB_SCALE_ITEM(537, 66, 0), | |
38 | 2, 3, TLV_DB_SCALE_ITEM(677, 82, 0), | |
39 | 4, 5, TLV_DB_SCALE_ITEM(852, 104, 0), | |
40 | 6, 7, TLV_DB_SCALE_ITEM(1072, 131, 0), | |
41 | 8, 9, TLV_DB_SCALE_ITEM(1350, 165, 0), | |
42 | 10, 11, TLV_DB_SCALE_ITEM(1699, 101, 0), | |
43 | ); | |
44 | ||
45 | static const DECLARE_TLV_DB_RANGE(max98371_dht_max_gain, | |
46 | 0, 1, TLV_DB_SCALE_ITEM(537, 66, 0), | |
47 | 2, 3, TLV_DB_SCALE_ITEM(677, 82, 0), | |
48 | 4, 5, TLV_DB_SCALE_ITEM(852, 104, 0), | |
49 | 6, 7, TLV_DB_SCALE_ITEM(1072, 131, 0), | |
50 | 8, 9, TLV_DB_SCALE_ITEM(1350, 165, 0), | |
51 | 10, 11, TLV_DB_SCALE_ITEM(1699, 208, 0), | |
52 | ); | |
53 | ||
54 | static const DECLARE_TLV_DB_RANGE(max98371_dht_rot_gain, | |
55 | 0, 1, TLV_DB_SCALE_ITEM(-50, -50, 0), | |
56 | 2, 6, TLV_DB_SCALE_ITEM(-100, -100, 0), | |
57 | 7, 8, TLV_DB_SCALE_ITEM(-800, -200, 0), | |
58 | 9, 11, TLV_DB_SCALE_ITEM(-1200, -300, 0), | |
59 | 12, 13, TLV_DB_SCALE_ITEM(-2000, -200, 0), | |
60 | 14, 15, TLV_DB_SCALE_ITEM(-2500, -500, 0), | |
61 | ); | |
62 | ||
63 | static const struct reg_default max98371_reg[] = { | |
64 | { 0x01, 0x00 }, | |
65 | { 0x02, 0x00 }, | |
66 | { 0x03, 0x00 }, | |
67 | { 0x04, 0x00 }, | |
68 | { 0x05, 0x00 }, | |
69 | { 0x06, 0x00 }, | |
70 | { 0x07, 0x00 }, | |
71 | { 0x08, 0x00 }, | |
72 | { 0x09, 0x00 }, | |
73 | { 0x0A, 0x00 }, | |
74 | { 0x10, 0x06 }, | |
75 | { 0x11, 0x08 }, | |
76 | { 0x14, 0x80 }, | |
77 | { 0x15, 0x00 }, | |
78 | { 0x16, 0x00 }, | |
79 | { 0x18, 0x00 }, | |
80 | { 0x19, 0x00 }, | |
81 | { 0x1C, 0x00 }, | |
82 | { 0x1D, 0x00 }, | |
83 | { 0x1E, 0x00 }, | |
84 | { 0x1F, 0x00 }, | |
85 | { 0x20, 0x00 }, | |
86 | { 0x21, 0x00 }, | |
87 | { 0x22, 0x00 }, | |
88 | { 0x23, 0x00 }, | |
89 | { 0x24, 0x00 }, | |
90 | { 0x25, 0x00 }, | |
91 | { 0x26, 0x00 }, | |
92 | { 0x27, 0x00 }, | |
93 | { 0x28, 0x00 }, | |
94 | { 0x29, 0x00 }, | |
95 | { 0x2A, 0x00 }, | |
96 | { 0x2B, 0x00 }, | |
97 | { 0x2C, 0x00 }, | |
98 | { 0x2D, 0x00 }, | |
99 | { 0x2E, 0x0B }, | |
100 | { 0x31, 0x00 }, | |
101 | { 0x32, 0x18 }, | |
102 | { 0x33, 0x00 }, | |
103 | { 0x34, 0x00 }, | |
104 | { 0x36, 0x00 }, | |
105 | { 0x37, 0x00 }, | |
106 | { 0x38, 0x00 }, | |
107 | { 0x39, 0x00 }, | |
108 | { 0x3A, 0x00 }, | |
109 | { 0x3B, 0x00 }, | |
ca2cd6bc | 110 | { 0x3C, 0x00 }, |
111 | { 0x3D, 0x00 }, | |
112 | { 0x3E, 0x00 }, | |
113 | { 0x3F, 0x00 }, | |
114 | { 0x40, 0x00 }, | |
115 | { 0x41, 0x00 }, | |
116 | { 0x42, 0x00 }, | |
117 | { 0x43, 0x00 }, | |
118 | { 0x4A, 0x00 }, | |
119 | { 0x4B, 0x00 }, | |
120 | { 0x4C, 0x00 }, | |
121 | { 0x4D, 0x00 }, | |
122 | { 0x4E, 0x00 }, | |
123 | { 0x50, 0x00 }, | |
124 | { 0x51, 0x00 }, | |
125 | { 0x55, 0x00 }, | |
126 | { 0x58, 0x00 }, | |
127 | { 0x59, 0x00 }, | |
128 | { 0x5C, 0x00 }, | |
129 | { 0xFF, 0x43 }, | |
130 | }; | |
131 | ||
132 | static bool max98371_volatile_register(struct device *dev, unsigned int reg) | |
133 | { | |
134 | switch (reg) { | |
135 | case MAX98371_IRQ_CLEAR1: | |
136 | case MAX98371_IRQ_CLEAR2: | |
137 | case MAX98371_IRQ_CLEAR3: | |
138 | case MAX98371_VERSION: | |
139 | return true; | |
140 | default: | |
141 | return false; | |
142 | } | |
143 | } | |
144 | ||
145 | static bool max98371_readable_register(struct device *dev, unsigned int reg) | |
146 | { | |
147 | switch (reg) { | |
148 | case MAX98371_SOFT_RESET: | |
149 | return false; | |
150 | default: | |
151 | return true; | |
152 | } | |
153 | }; | |
154 | ||
155 | static const DECLARE_TLV_DB_RANGE(max98371_gain_tlv, | |
156 | 0, 7, TLV_DB_SCALE_ITEM(0, 50, 0), | |
157 | 8, 10, TLV_DB_SCALE_ITEM(400, 100, 0) | |
158 | ); | |
159 | ||
160 | static const DECLARE_TLV_DB_RANGE(max98371_noload_gain_tlv, | |
161 | 0, 11, TLV_DB_SCALE_ITEM(950, 100, 0), | |
162 | ); | |
163 | ||
164 | static const DECLARE_TLV_DB_SCALE(digital_tlv, -6300, 50, 1); | |
165 | ||
166 | static const struct snd_kcontrol_new max98371_snd_controls[] = { | |
167 | SOC_SINGLE_TLV("Speaker Volume", MAX98371_GAIN, | |
168 | MAX98371_GAIN_SHIFT, (1<<MAX98371_GAIN_WIDTH)-1, 0, | |
169 | max98371_gain_tlv), | |
170 | SOC_SINGLE_TLV("Digital Volume", MAX98371_DIGITAL_GAIN, 0, | |
171 | (1<<MAX98371_DIGITAL_GAIN_WIDTH)-1, 1, digital_tlv), | |
172 | SOC_SINGLE_TLV("Speaker DHT Max Volume", MAX98371_GAIN, | |
173 | 0, (1<<MAX98371_DHT_MAX_WIDTH)-1, 0, | |
174 | max98371_dht_max_gain), | |
175 | SOC_SINGLE_TLV("Speaker DHT Min Volume", MAX98371_DHT_GAIN, | |
176 | 0, (1<<MAX98371_DHT_GAIN_WIDTH)-1, 0, | |
177 | max98371_dht_min_gain), | |
178 | SOC_SINGLE_TLV("Speaker DHT Rotation Volume", MAX98371_DHT_GAIN, | |
179 | 0, (1<<MAX98371_DHT_ROT_WIDTH)-1, 0, | |
180 | max98371_dht_rot_gain), | |
181 | SOC_SINGLE("DHT Attack Step", MAX98371_DHT, MAX98371_DHT_STEP, 3, 0), | |
182 | SOC_SINGLE("DHT Attack Rate", MAX98371_DHT, 0, 7, 0), | |
183 | SOC_ENUM("Monomix Select", max98371_monomix), | |
184 | SOC_ENUM("HPF Cutoff", max98371_hpf_cutoff), | |
185 | }; | |
186 | ||
187 | static int max98371_dai_set_fmt(struct snd_soc_dai *codec_dai, | |
188 | unsigned int fmt) | |
189 | { | |
190 | struct snd_soc_codec *codec = codec_dai->codec; | |
191 | struct max98371_priv *max98371 = snd_soc_codec_get_drvdata(codec); | |
192 | unsigned int val = 0; | |
193 | ||
194 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
195 | case SND_SOC_DAIFMT_CBS_CFS: | |
196 | break; | |
197 | default: | |
198 | dev_err(codec->dev, "DAI clock mode unsupported"); | |
199 | return -EINVAL; | |
200 | } | |
201 | ||
202 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
203 | case SND_SOC_DAIFMT_I2S: | |
204 | val |= 0; | |
205 | break; | |
206 | case SND_SOC_DAIFMT_RIGHT_J: | |
207 | val |= MAX98371_DAI_RIGHT; | |
208 | break; | |
209 | case SND_SOC_DAIFMT_LEFT_J: | |
210 | val |= MAX98371_DAI_LEFT; | |
211 | break; | |
212 | default: | |
213 | dev_err(codec->dev, "DAI wrong mode unsupported"); | |
214 | return -EINVAL; | |
215 | } | |
216 | regmap_update_bits(max98371->regmap, MAX98371_FMT, | |
217 | MAX98371_FMT_MODE_MASK, val); | |
218 | return 0; | |
219 | } | |
220 | ||
221 | static int max98371_dai_hw_params(struct snd_pcm_substream *substream, | |
222 | struct snd_pcm_hw_params *params, | |
223 | struct snd_soc_dai *dai) | |
224 | { | |
225 | struct snd_soc_codec *codec = dai->codec; | |
226 | struct max98371_priv *max98371 = snd_soc_codec_get_drvdata(codec); | |
227 | int blr_clk_ratio, ch_size, channels = params_channels(params); | |
228 | int rate = params_rate(params); | |
229 | ||
230 | switch (params_format(params)) { | |
231 | case SNDRV_PCM_FORMAT_S8: | |
232 | regmap_update_bits(max98371->regmap, MAX98371_FMT, | |
233 | MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16); | |
234 | ch_size = 8; | |
235 | break; | |
236 | case SNDRV_PCM_FORMAT_S16_LE: | |
237 | regmap_update_bits(max98371->regmap, MAX98371_FMT, | |
238 | MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16); | |
239 | ch_size = 16; | |
240 | break; | |
241 | case SNDRV_PCM_FORMAT_S24_LE: | |
242 | regmap_update_bits(max98371->regmap, MAX98371_FMT, | |
243 | MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32); | |
244 | ch_size = 24; | |
245 | break; | |
246 | case SNDRV_PCM_FORMAT_S32_LE: | |
247 | regmap_update_bits(max98371->regmap, MAX98371_FMT, | |
248 | MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32); | |
249 | ch_size = 32; | |
250 | break; | |
251 | default: | |
252 | return -EINVAL; | |
253 | } | |
254 | ||
255 | /* BCLK/LRCLK ratio calculation */ | |
256 | blr_clk_ratio = channels * ch_size; | |
257 | switch (blr_clk_ratio) { | |
258 | case 32: | |
259 | regmap_update_bits(max98371->regmap, | |
260 | MAX98371_DAI_CLK, | |
261 | MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_32); | |
262 | break; | |
263 | case 48: | |
264 | regmap_update_bits(max98371->regmap, | |
265 | MAX98371_DAI_CLK, | |
266 | MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_48); | |
267 | break; | |
268 | case 64: | |
269 | regmap_update_bits(max98371->regmap, | |
270 | MAX98371_DAI_CLK, | |
271 | MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_64); | |
272 | break; | |
273 | default: | |
274 | return -EINVAL; | |
275 | } | |
276 | ||
277 | switch (rate) { | |
278 | case 32000: | |
279 | regmap_update_bits(max98371->regmap, | |
280 | MAX98371_SPK_SR, | |
281 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_32); | |
282 | break; | |
283 | case 44100: | |
284 | regmap_update_bits(max98371->regmap, | |
285 | MAX98371_SPK_SR, | |
286 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_44); | |
287 | break; | |
288 | case 48000: | |
289 | regmap_update_bits(max98371->regmap, | |
290 | MAX98371_SPK_SR, | |
291 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_48); | |
292 | break; | |
293 | case 88200: | |
294 | regmap_update_bits(max98371->regmap, | |
295 | MAX98371_SPK_SR, | |
296 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_88); | |
297 | break; | |
298 | case 96000: | |
299 | regmap_update_bits(max98371->regmap, | |
300 | MAX98371_SPK_SR, | |
301 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_96); | |
302 | break; | |
303 | default: | |
304 | return -EINVAL; | |
305 | } | |
306 | ||
307 | /* enabling both the RX channels*/ | |
308 | regmap_update_bits(max98371->regmap, MAX98371_MONOMIX_SRC, | |
309 | MAX98371_MONOMIX_SRC_MASK, MONOMIX_RX_0_1); | |
310 | regmap_update_bits(max98371->regmap, MAX98371_DAI_CHANNEL, | |
311 | MAX98371_CHANNEL_MASK, MAX98371_CHANNEL_MASK); | |
312 | return 0; | |
313 | } | |
314 | ||
315 | static const struct snd_soc_dapm_widget max98371_dapm_widgets[] = { | |
316 | SND_SOC_DAPM_DAC("DAC", NULL, MAX98371_SPK_ENABLE, 0, 0), | |
317 | SND_SOC_DAPM_SUPPLY("Global Enable", MAX98371_GLOBAL_ENABLE, | |
318 | 0, 0, NULL, 0), | |
319 | SND_SOC_DAPM_OUTPUT("SPK_OUT"), | |
320 | }; | |
321 | ||
322 | static const struct snd_soc_dapm_route max98371_audio_map[] = { | |
323 | {"DAC", NULL, "HiFi Playback"}, | |
324 | {"SPK_OUT", NULL, "DAC"}, | |
325 | {"SPK_OUT", NULL, "Global Enable"}, | |
326 | }; | |
327 | ||
328 | #define MAX98371_RATES SNDRV_PCM_RATE_8000_48000 | |
329 | #define MAX98371_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE | \ | |
330 | SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE) | |
331 | ||
332 | static const struct snd_soc_dai_ops max98371_dai_ops = { | |
333 | .set_fmt = max98371_dai_set_fmt, | |
334 | .hw_params = max98371_dai_hw_params, | |
335 | }; | |
336 | ||
337 | static struct snd_soc_dai_driver max98371_dai[] = { | |
338 | { | |
339 | .name = "max98371-aif1", | |
340 | .playback = { | |
341 | .stream_name = "HiFi Playback", | |
342 | .channels_min = 1, | |
343 | .channels_max = 2, | |
344 | .rates = SNDRV_PCM_RATE_8000_48000, | |
345 | .formats = MAX98371_FORMATS, | |
346 | }, | |
347 | .ops = &max98371_dai_ops, | |
348 | } | |
349 | }; | |
350 | ||
351 | static const struct snd_soc_codec_driver max98371_codec = { | |
352 | .controls = max98371_snd_controls, | |
353 | .num_controls = ARRAY_SIZE(max98371_snd_controls), | |
354 | .dapm_routes = max98371_audio_map, | |
355 | .num_dapm_routes = ARRAY_SIZE(max98371_audio_map), | |
356 | .dapm_widgets = max98371_dapm_widgets, | |
357 | .num_dapm_widgets = ARRAY_SIZE(max98371_dapm_widgets), | |
358 | }; | |
359 | ||
360 | static const struct regmap_config max98371_regmap = { | |
361 | .reg_bits = 8, | |
362 | .val_bits = 8, | |
363 | .max_register = MAX98371_VERSION, | |
364 | .reg_defaults = max98371_reg, | |
365 | .num_reg_defaults = ARRAY_SIZE(max98371_reg), | |
366 | .volatile_reg = max98371_volatile_register, | |
367 | .readable_reg = max98371_readable_register, | |
368 | .cache_type = REGCACHE_RBTREE, | |
369 | }; | |
370 | ||
371 | static int max98371_i2c_probe(struct i2c_client *i2c, | |
372 | const struct i2c_device_id *id) | |
373 | { | |
374 | struct max98371_priv *max98371; | |
375 | int ret, reg; | |
376 | ||
377 | max98371 = devm_kzalloc(&i2c->dev, | |
378 | sizeof(*max98371), GFP_KERNEL); | |
379 | if (!max98371) | |
380 | return -ENOMEM; | |
381 | ||
382 | i2c_set_clientdata(i2c, max98371); | |
383 | max98371->regmap = devm_regmap_init_i2c(i2c, &max98371_regmap); | |
384 | if (IS_ERR(max98371->regmap)) { | |
385 | ret = PTR_ERR(max98371->regmap); | |
386 | dev_err(&i2c->dev, | |
387 | "Failed to allocate regmap: %d\n", ret); | |
388 | return ret; | |
389 | } | |
390 | ||
391 | ret = regmap_read(max98371->regmap, MAX98371_VERSION, ®); | |
392 | if (ret < 0) { | |
393 | dev_info(&i2c->dev, "device error %d\n", ret); | |
394 | return ret; | |
395 | } | |
396 | dev_info(&i2c->dev, "device version %x\n", reg); | |
397 | ||
398 | ret = snd_soc_register_codec(&i2c->dev, &max98371_codec, | |
399 | max98371_dai, ARRAY_SIZE(max98371_dai)); | |
400 | if (ret < 0) { | |
401 | dev_err(&i2c->dev, "Failed to register codec: %d\n", ret); | |
402 | return ret; | |
403 | } | |
404 | return ret; | |
405 | } | |
406 | ||
407 | static int max98371_i2c_remove(struct i2c_client *client) | |
408 | { | |
409 | snd_soc_unregister_codec(&client->dev); | |
410 | return 0; | |
411 | } | |
412 | ||
413 | static const struct i2c_device_id max98371_i2c_id[] = { | |
414 | { "max98371", 0 }, | |
209c721c | 415 | { } |
ca2cd6bc | 416 | }; |
417 | ||
418 | MODULE_DEVICE_TABLE(i2c, max98371_i2c_id); | |
419 | ||
420 | static const struct of_device_id max98371_of_match[] = { | |
421 | { .compatible = "maxim,max98371", }, | |
422 | { } | |
423 | }; | |
424 | MODULE_DEVICE_TABLE(of, max98371_of_match); | |
425 | ||
426 | static struct i2c_driver max98371_i2c_driver = { | |
427 | .driver = { | |
428 | .name = "max98371", | |
ca2cd6bc | 429 | .pm = NULL, |
430 | .of_match_table = of_match_ptr(max98371_of_match), | |
431 | }, | |
432 | .probe = max98371_i2c_probe, | |
433 | .remove = max98371_i2c_remove, | |
434 | .id_table = max98371_i2c_id, | |
435 | }; | |
436 | ||
437 | module_i2c_driver(max98371_i2c_driver); | |
438 | ||
439 | MODULE_AUTHOR("anish kumar <yesanishhere@gmail.com>"); | |
440 | MODULE_DESCRIPTION("ALSA SoC MAX98371 driver"); | |
441 | MODULE_LICENSE("GPL"); |