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 }, |
110 | { 0x3B, 0x00 }, |
111 | { 0x3C, 0x00 }, |
112 | { 0x3D, 0x00 }, |
113 | { 0x3E, 0x00 }, |
114 | { 0x3F, 0x00 }, |
115 | { 0x40, 0x00 }, |
116 | { 0x41, 0x00 }, |
117 | { 0x42, 0x00 }, |
118 | { 0x43, 0x00 }, |
119 | { 0x4A, 0x00 }, |
120 | { 0x4B, 0x00 }, |
121 | { 0x4C, 0x00 }, |
122 | { 0x4D, 0x00 }, |
123 | { 0x4E, 0x00 }, |
124 | { 0x50, 0x00 }, |
125 | { 0x51, 0x00 }, |
126 | { 0x55, 0x00 }, |
127 | { 0x58, 0x00 }, |
128 | { 0x59, 0x00 }, |
129 | { 0x5C, 0x00 }, |
130 | { 0xFF, 0x43 }, |
131 | }; |
132 | |
133 | static bool max98371_volatile_register(struct device *dev, unsigned int reg) |
134 | { |
135 | switch (reg) { |
136 | case MAX98371_IRQ_CLEAR1: |
137 | case MAX98371_IRQ_CLEAR2: |
138 | case MAX98371_IRQ_CLEAR3: |
139 | case MAX98371_VERSION: |
140 | return true; |
141 | default: |
142 | return false; |
143 | } |
144 | } |
145 | |
146 | static bool max98371_readable_register(struct device *dev, unsigned int reg) |
147 | { |
148 | switch (reg) { |
149 | case MAX98371_SOFT_RESET: |
150 | return false; |
151 | default: |
152 | return true; |
153 | } |
154 | }; |
155 | |
156 | static const DECLARE_TLV_DB_RANGE(max98371_gain_tlv, |
157 | 0, 7, TLV_DB_SCALE_ITEM(0, 50, 0), |
158 | 8, 10, TLV_DB_SCALE_ITEM(400, 100, 0) |
159 | ); |
160 | |
161 | static const DECLARE_TLV_DB_RANGE(max98371_noload_gain_tlv, |
162 | 0, 11, TLV_DB_SCALE_ITEM(950, 100, 0), |
163 | ); |
164 | |
165 | static const DECLARE_TLV_DB_SCALE(digital_tlv, -6300, 50, 1); |
166 | |
167 | static const struct snd_kcontrol_new max98371_snd_controls[] = { |
168 | SOC_SINGLE_TLV("Speaker Volume", MAX98371_GAIN, |
169 | MAX98371_GAIN_SHIFT, (1<<MAX98371_GAIN_WIDTH)-1, 0, |
170 | max98371_gain_tlv), |
171 | SOC_SINGLE_TLV("Digital Volume", MAX98371_DIGITAL_GAIN, 0, |
172 | (1<<MAX98371_DIGITAL_GAIN_WIDTH)-1, 1, digital_tlv), |
173 | SOC_SINGLE_TLV("Speaker DHT Max Volume", MAX98371_GAIN, |
174 | 0, (1<<MAX98371_DHT_MAX_WIDTH)-1, 0, |
175 | max98371_dht_max_gain), |
176 | SOC_SINGLE_TLV("Speaker DHT Min Volume", MAX98371_DHT_GAIN, |
177 | 0, (1<<MAX98371_DHT_GAIN_WIDTH)-1, 0, |
178 | max98371_dht_min_gain), |
179 | SOC_SINGLE_TLV("Speaker DHT Rotation Volume", MAX98371_DHT_GAIN, |
180 | 0, (1<<MAX98371_DHT_ROT_WIDTH)-1, 0, |
181 | max98371_dht_rot_gain), |
182 | SOC_SINGLE("DHT Attack Step", MAX98371_DHT, MAX98371_DHT_STEP, 3, 0), |
183 | SOC_SINGLE("DHT Attack Rate", MAX98371_DHT, 0, 7, 0), |
184 | SOC_ENUM("Monomix Select", max98371_monomix), |
185 | SOC_ENUM("HPF Cutoff", max98371_hpf_cutoff), |
186 | }; |
187 | |
188 | static int max98371_dai_set_fmt(struct snd_soc_dai *codec_dai, |
189 | unsigned int fmt) |
190 | { |
191 | struct snd_soc_codec *codec = codec_dai->codec; |
192 | struct max98371_priv *max98371 = snd_soc_codec_get_drvdata(codec); |
193 | unsigned int val = 0; |
194 | |
195 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
196 | case SND_SOC_DAIFMT_CBS_CFS: |
197 | break; |
198 | default: |
199 | dev_err(codec->dev, "DAI clock mode unsupported"); |
200 | return -EINVAL; |
201 | } |
202 | |
203 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
204 | case SND_SOC_DAIFMT_I2S: |
205 | val |= 0; |
206 | break; |
207 | case SND_SOC_DAIFMT_RIGHT_J: |
208 | val |= MAX98371_DAI_RIGHT; |
209 | break; |
210 | case SND_SOC_DAIFMT_LEFT_J: |
211 | val |= MAX98371_DAI_LEFT; |
212 | break; |
213 | default: |
214 | dev_err(codec->dev, "DAI wrong mode unsupported"); |
215 | return -EINVAL; |
216 | } |
217 | regmap_update_bits(max98371->regmap, MAX98371_FMT, |
218 | MAX98371_FMT_MODE_MASK, val); |
219 | return 0; |
220 | } |
221 | |
222 | static int max98371_dai_hw_params(struct snd_pcm_substream *substream, |
223 | struct snd_pcm_hw_params *params, |
224 | struct snd_soc_dai *dai) |
225 | { |
226 | struct snd_soc_codec *codec = dai->codec; |
227 | struct max98371_priv *max98371 = snd_soc_codec_get_drvdata(codec); |
228 | int blr_clk_ratio, ch_size, channels = params_channels(params); |
229 | int rate = params_rate(params); |
230 | |
231 | switch (params_format(params)) { |
232 | case SNDRV_PCM_FORMAT_S8: |
233 | regmap_update_bits(max98371->regmap, MAX98371_FMT, |
234 | MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16); |
235 | ch_size = 8; |
236 | break; |
237 | case SNDRV_PCM_FORMAT_S16_LE: |
238 | regmap_update_bits(max98371->regmap, MAX98371_FMT, |
239 | MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16); |
240 | ch_size = 16; |
241 | break; |
242 | case SNDRV_PCM_FORMAT_S24_LE: |
243 | regmap_update_bits(max98371->regmap, MAX98371_FMT, |
244 | MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32); |
245 | ch_size = 24; |
246 | break; |
247 | case SNDRV_PCM_FORMAT_S32_LE: |
248 | regmap_update_bits(max98371->regmap, MAX98371_FMT, |
249 | MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32); |
250 | ch_size = 32; |
251 | break; |
252 | default: |
253 | return -EINVAL; |
254 | } |
255 | |
256 | /* BCLK/LRCLK ratio calculation */ |
257 | blr_clk_ratio = channels * ch_size; |
258 | switch (blr_clk_ratio) { |
259 | case 32: |
260 | regmap_update_bits(max98371->regmap, |
261 | MAX98371_DAI_CLK, |
262 | MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_32); |
263 | break; |
264 | case 48: |
265 | regmap_update_bits(max98371->regmap, |
266 | MAX98371_DAI_CLK, |
267 | MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_48); |
268 | break; |
269 | case 64: |
270 | regmap_update_bits(max98371->regmap, |
271 | MAX98371_DAI_CLK, |
272 | MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_64); |
273 | break; |
274 | default: |
275 | return -EINVAL; |
276 | } |
277 | |
278 | switch (rate) { |
279 | case 32000: |
280 | regmap_update_bits(max98371->regmap, |
281 | MAX98371_SPK_SR, |
282 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_32); |
283 | break; |
284 | case 44100: |
285 | regmap_update_bits(max98371->regmap, |
286 | MAX98371_SPK_SR, |
287 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_44); |
288 | break; |
289 | case 48000: |
290 | regmap_update_bits(max98371->regmap, |
291 | MAX98371_SPK_SR, |
292 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_48); |
293 | break; |
294 | case 88200: |
295 | regmap_update_bits(max98371->regmap, |
296 | MAX98371_SPK_SR, |
297 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_88); |
298 | break; |
299 | case 96000: |
300 | regmap_update_bits(max98371->regmap, |
301 | MAX98371_SPK_SR, |
302 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_96); |
303 | break; |
304 | default: |
305 | return -EINVAL; |
306 | } |
307 | |
308 | /* enabling both the RX channels*/ |
309 | regmap_update_bits(max98371->regmap, MAX98371_MONOMIX_SRC, |
310 | MAX98371_MONOMIX_SRC_MASK, MONOMIX_RX_0_1); |
311 | regmap_update_bits(max98371->regmap, MAX98371_DAI_CHANNEL, |
312 | MAX98371_CHANNEL_MASK, MAX98371_CHANNEL_MASK); |
313 | return 0; |
314 | } |
315 | |
316 | static const struct snd_soc_dapm_widget max98371_dapm_widgets[] = { |
317 | SND_SOC_DAPM_DAC("DAC", NULL, MAX98371_SPK_ENABLE, 0, 0), |
318 | SND_SOC_DAPM_SUPPLY("Global Enable", MAX98371_GLOBAL_ENABLE, |
319 | 0, 0, NULL, 0), |
320 | SND_SOC_DAPM_OUTPUT("SPK_OUT"), |
321 | }; |
322 | |
323 | static const struct snd_soc_dapm_route max98371_audio_map[] = { |
324 | {"DAC", NULL, "HiFi Playback"}, |
325 | {"SPK_OUT", NULL, "DAC"}, |
326 | {"SPK_OUT", NULL, "Global Enable"}, |
327 | }; |
328 | |
329 | #define MAX98371_RATES SNDRV_PCM_RATE_8000_48000 |
330 | #define MAX98371_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE | \ |
331 | SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE) |
332 | |
333 | static const struct snd_soc_dai_ops max98371_dai_ops = { |
334 | .set_fmt = max98371_dai_set_fmt, |
335 | .hw_params = max98371_dai_hw_params, |
336 | }; |
337 | |
338 | static struct snd_soc_dai_driver max98371_dai[] = { |
339 | { |
340 | .name = "max98371-aif1", |
341 | .playback = { |
342 | .stream_name = "HiFi Playback", |
343 | .channels_min = 1, |
344 | .channels_max = 2, |
345 | .rates = SNDRV_PCM_RATE_8000_48000, |
346 | .formats = MAX98371_FORMATS, |
347 | }, |
348 | .ops = &max98371_dai_ops, |
349 | } |
350 | }; |
351 | |
352 | static const struct snd_soc_codec_driver max98371_codec = { |
353 | .controls = max98371_snd_controls, |
354 | .num_controls = ARRAY_SIZE(max98371_snd_controls), |
355 | .dapm_routes = max98371_audio_map, |
356 | .num_dapm_routes = ARRAY_SIZE(max98371_audio_map), |
357 | .dapm_widgets = max98371_dapm_widgets, |
358 | .num_dapm_widgets = ARRAY_SIZE(max98371_dapm_widgets), |
359 | }; |
360 | |
361 | static const struct regmap_config max98371_regmap = { |
362 | .reg_bits = 8, |
363 | .val_bits = 8, |
364 | .max_register = MAX98371_VERSION, |
365 | .reg_defaults = max98371_reg, |
366 | .num_reg_defaults = ARRAY_SIZE(max98371_reg), |
367 | .volatile_reg = max98371_volatile_register, |
368 | .readable_reg = max98371_readable_register, |
369 | .cache_type = REGCACHE_RBTREE, |
370 | }; |
371 | |
372 | static int max98371_i2c_probe(struct i2c_client *i2c, |
373 | const struct i2c_device_id *id) |
374 | { |
375 | struct max98371_priv *max98371; |
376 | int ret, reg; |
377 | |
378 | max98371 = devm_kzalloc(&i2c->dev, |
379 | sizeof(*max98371), GFP_KERNEL); |
380 | if (!max98371) |
381 | return -ENOMEM; |
382 | |
383 | i2c_set_clientdata(i2c, max98371); |
384 | max98371->regmap = devm_regmap_init_i2c(i2c, &max98371_regmap); |
385 | if (IS_ERR(max98371->regmap)) { |
386 | ret = PTR_ERR(max98371->regmap); |
387 | dev_err(&i2c->dev, |
388 | "Failed to allocate regmap: %d\n", ret); |
389 | return ret; |
390 | } |
391 | |
392 | ret = regmap_read(max98371->regmap, MAX98371_VERSION, ®); |
393 | if (ret < 0) { |
394 | dev_info(&i2c->dev, "device error %d\n", ret); |
395 | return ret; |
396 | } |
397 | dev_info(&i2c->dev, "device version %x\n", reg); |
398 | |
399 | ret = snd_soc_register_codec(&i2c->dev, &max98371_codec, |
400 | max98371_dai, ARRAY_SIZE(max98371_dai)); |
401 | if (ret < 0) { |
402 | dev_err(&i2c->dev, "Failed to register codec: %d\n", ret); |
403 | return ret; |
404 | } |
405 | return ret; |
406 | } |
407 | |
408 | static int max98371_i2c_remove(struct i2c_client *client) |
409 | { |
410 | snd_soc_unregister_codec(&client->dev); |
411 | return 0; |
412 | } |
413 | |
414 | static const struct i2c_device_id max98371_i2c_id[] = { |
415 | { "max98371", 0 }, |
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", |
429 | .owner = THIS_MODULE, |
430 | .pm = NULL, |
431 | .of_match_table = of_match_ptr(max98371_of_match), |
432 | }, |
433 | .probe = max98371_i2c_probe, |
434 | .remove = max98371_i2c_remove, |
435 | .id_table = max98371_i2c_id, |
436 | }; |
437 | |
438 | module_i2c_driver(max98371_i2c_driver); |
439 | |
440 | MODULE_AUTHOR("anish kumar <yesanishhere@gmail.com>"); |
441 | MODULE_DESCRIPTION("ALSA SoC MAX98371 driver"); |
442 | MODULE_LICENSE("GPL"); |