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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
ca2cd6bc | 2 | /* |
3 | * max98371.c -- ALSA SoC Stereo MAX98371 driver | |
4 | * | |
5 | * Copyright 2015-16 Maxim Integrated Products | |
ca2cd6bc | 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 }, | |
ca2cd6bc | 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 | ||
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 | ||
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_RANGE(max98371_noload_gain_tlv, | |
158 | 0, 11, TLV_DB_SCALE_ITEM(950, 100, 0), | |
159 | ); | |
160 | ||
161 | static const DECLARE_TLV_DB_SCALE(digital_tlv, -6300, 50, 1); | |
162 | ||
163 | static const struct snd_kcontrol_new max98371_snd_controls[] = { | |
164 | SOC_SINGLE_TLV("Speaker Volume", MAX98371_GAIN, | |
165 | MAX98371_GAIN_SHIFT, (1<<MAX98371_GAIN_WIDTH)-1, 0, | |
166 | max98371_gain_tlv), | |
167 | SOC_SINGLE_TLV("Digital Volume", MAX98371_DIGITAL_GAIN, 0, | |
168 | (1<<MAX98371_DIGITAL_GAIN_WIDTH)-1, 1, digital_tlv), | |
169 | SOC_SINGLE_TLV("Speaker DHT Max Volume", MAX98371_GAIN, | |
170 | 0, (1<<MAX98371_DHT_MAX_WIDTH)-1, 0, | |
171 | max98371_dht_max_gain), | |
172 | SOC_SINGLE_TLV("Speaker DHT Min Volume", MAX98371_DHT_GAIN, | |
173 | 0, (1<<MAX98371_DHT_GAIN_WIDTH)-1, 0, | |
174 | max98371_dht_min_gain), | |
175 | SOC_SINGLE_TLV("Speaker DHT Rotation Volume", MAX98371_DHT_GAIN, | |
176 | 0, (1<<MAX98371_DHT_ROT_WIDTH)-1, 0, | |
177 | max98371_dht_rot_gain), | |
178 | SOC_SINGLE("DHT Attack Step", MAX98371_DHT, MAX98371_DHT_STEP, 3, 0), | |
179 | SOC_SINGLE("DHT Attack Rate", MAX98371_DHT, 0, 7, 0), | |
180 | SOC_ENUM("Monomix Select", max98371_monomix), | |
181 | SOC_ENUM("HPF Cutoff", max98371_hpf_cutoff), | |
182 | }; | |
183 | ||
184 | static int max98371_dai_set_fmt(struct snd_soc_dai *codec_dai, | |
185 | unsigned int fmt) | |
186 | { | |
1ae91ac7 KM |
187 | struct snd_soc_component *component = codec_dai->component; |
188 | struct max98371_priv *max98371 = snd_soc_component_get_drvdata(component); | |
ca2cd6bc | 189 | unsigned int val = 0; |
190 | ||
191 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
192 | case SND_SOC_DAIFMT_CBS_CFS: | |
193 | break; | |
194 | default: | |
1ae91ac7 | 195 | dev_err(component->dev, "DAI clock mode unsupported"); |
ca2cd6bc | 196 | return -EINVAL; |
197 | } | |
198 | ||
199 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
200 | case SND_SOC_DAIFMT_I2S: | |
201 | val |= 0; | |
202 | break; | |
203 | case SND_SOC_DAIFMT_RIGHT_J: | |
204 | val |= MAX98371_DAI_RIGHT; | |
205 | break; | |
206 | case SND_SOC_DAIFMT_LEFT_J: | |
207 | val |= MAX98371_DAI_LEFT; | |
208 | break; | |
209 | default: | |
1ae91ac7 | 210 | dev_err(component->dev, "DAI wrong mode unsupported"); |
ca2cd6bc | 211 | return -EINVAL; |
212 | } | |
213 | regmap_update_bits(max98371->regmap, MAX98371_FMT, | |
214 | MAX98371_FMT_MODE_MASK, val); | |
215 | return 0; | |
216 | } | |
217 | ||
218 | static int max98371_dai_hw_params(struct snd_pcm_substream *substream, | |
219 | struct snd_pcm_hw_params *params, | |
220 | struct snd_soc_dai *dai) | |
221 | { | |
1ae91ac7 KM |
222 | struct snd_soc_component *component = dai->component; |
223 | struct max98371_priv *max98371 = snd_soc_component_get_drvdata(component); | |
ca2cd6bc | 224 | int blr_clk_ratio, ch_size, channels = params_channels(params); |
225 | int rate = params_rate(params); | |
226 | ||
227 | switch (params_format(params)) { | |
228 | case SNDRV_PCM_FORMAT_S8: | |
229 | regmap_update_bits(max98371->regmap, MAX98371_FMT, | |
230 | MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16); | |
231 | ch_size = 8; | |
232 | break; | |
233 | case SNDRV_PCM_FORMAT_S16_LE: | |
234 | regmap_update_bits(max98371->regmap, MAX98371_FMT, | |
235 | MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_16); | |
236 | ch_size = 16; | |
237 | break; | |
238 | case SNDRV_PCM_FORMAT_S24_LE: | |
239 | regmap_update_bits(max98371->regmap, MAX98371_FMT, | |
240 | MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32); | |
241 | ch_size = 24; | |
242 | break; | |
243 | case SNDRV_PCM_FORMAT_S32_LE: | |
244 | regmap_update_bits(max98371->regmap, MAX98371_FMT, | |
245 | MAX98371_FMT_MASK, MAX98371_DAI_CHANSZ_32); | |
246 | ch_size = 32; | |
247 | break; | |
248 | default: | |
249 | return -EINVAL; | |
250 | } | |
251 | ||
252 | /* BCLK/LRCLK ratio calculation */ | |
253 | blr_clk_ratio = channels * ch_size; | |
254 | switch (blr_clk_ratio) { | |
255 | case 32: | |
256 | regmap_update_bits(max98371->regmap, | |
257 | MAX98371_DAI_CLK, | |
258 | MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_32); | |
259 | break; | |
260 | case 48: | |
261 | regmap_update_bits(max98371->regmap, | |
262 | MAX98371_DAI_CLK, | |
263 | MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_48); | |
264 | break; | |
265 | case 64: | |
266 | regmap_update_bits(max98371->regmap, | |
267 | MAX98371_DAI_CLK, | |
268 | MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_64); | |
269 | break; | |
270 | default: | |
271 | return -EINVAL; | |
272 | } | |
273 | ||
274 | switch (rate) { | |
275 | case 32000: | |
276 | regmap_update_bits(max98371->regmap, | |
277 | MAX98371_SPK_SR, | |
278 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_32); | |
279 | break; | |
280 | case 44100: | |
281 | regmap_update_bits(max98371->regmap, | |
282 | MAX98371_SPK_SR, | |
283 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_44); | |
284 | break; | |
285 | case 48000: | |
286 | regmap_update_bits(max98371->regmap, | |
287 | MAX98371_SPK_SR, | |
288 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_48); | |
289 | break; | |
290 | case 88200: | |
291 | regmap_update_bits(max98371->regmap, | |
292 | MAX98371_SPK_SR, | |
293 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_88); | |
294 | break; | |
295 | case 96000: | |
296 | regmap_update_bits(max98371->regmap, | |
297 | MAX98371_SPK_SR, | |
298 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_96); | |
299 | break; | |
300 | default: | |
301 | return -EINVAL; | |
302 | } | |
303 | ||
304 | /* enabling both the RX channels*/ | |
305 | regmap_update_bits(max98371->regmap, MAX98371_MONOMIX_SRC, | |
306 | MAX98371_MONOMIX_SRC_MASK, MONOMIX_RX_0_1); | |
307 | regmap_update_bits(max98371->regmap, MAX98371_DAI_CHANNEL, | |
308 | MAX98371_CHANNEL_MASK, MAX98371_CHANNEL_MASK); | |
309 | return 0; | |
310 | } | |
311 | ||
312 | static const struct snd_soc_dapm_widget max98371_dapm_widgets[] = { | |
313 | SND_SOC_DAPM_DAC("DAC", NULL, MAX98371_SPK_ENABLE, 0, 0), | |
314 | SND_SOC_DAPM_SUPPLY("Global Enable", MAX98371_GLOBAL_ENABLE, | |
315 | 0, 0, NULL, 0), | |
316 | SND_SOC_DAPM_OUTPUT("SPK_OUT"), | |
317 | }; | |
318 | ||
319 | static const struct snd_soc_dapm_route max98371_audio_map[] = { | |
320 | {"DAC", NULL, "HiFi Playback"}, | |
321 | {"SPK_OUT", NULL, "DAC"}, | |
322 | {"SPK_OUT", NULL, "Global Enable"}, | |
323 | }; | |
324 | ||
325 | #define MAX98371_RATES SNDRV_PCM_RATE_8000_48000 | |
326 | #define MAX98371_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE | \ | |
327 | SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE) | |
328 | ||
329 | static const struct snd_soc_dai_ops max98371_dai_ops = { | |
330 | .set_fmt = max98371_dai_set_fmt, | |
331 | .hw_params = max98371_dai_hw_params, | |
332 | }; | |
333 | ||
334 | static struct snd_soc_dai_driver max98371_dai[] = { | |
335 | { | |
336 | .name = "max98371-aif1", | |
337 | .playback = { | |
338 | .stream_name = "HiFi Playback", | |
339 | .channels_min = 1, | |
340 | .channels_max = 2, | |
341 | .rates = SNDRV_PCM_RATE_8000_48000, | |
342 | .formats = MAX98371_FORMATS, | |
343 | }, | |
344 | .ops = &max98371_dai_ops, | |
345 | } | |
346 | }; | |
347 | ||
1ae91ac7 KM |
348 | static const struct snd_soc_component_driver max98371_component = { |
349 | .controls = max98371_snd_controls, | |
350 | .num_controls = ARRAY_SIZE(max98371_snd_controls), | |
351 | .dapm_routes = max98371_audio_map, | |
352 | .num_dapm_routes = ARRAY_SIZE(max98371_audio_map), | |
353 | .dapm_widgets = max98371_dapm_widgets, | |
354 | .num_dapm_widgets = ARRAY_SIZE(max98371_dapm_widgets), | |
355 | .idle_bias_on = 1, | |
356 | .use_pmdown_time = 1, | |
357 | .endianness = 1, | |
358 | .non_legacy_dai_naming = 1, | |
ca2cd6bc | 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 | ||
1ae91ac7 | 399 | ret = devm_snd_soc_register_component(&i2c->dev, &max98371_component, |
ca2cd6bc | 400 | max98371_dai, ARRAY_SIZE(max98371_dai)); |
401 | if (ret < 0) { | |
1ae91ac7 | 402 | dev_err(&i2c->dev, "Failed to register component: %d\n", ret); |
ca2cd6bc | 403 | return ret; |
404 | } | |
405 | return ret; | |
406 | } | |
407 | ||
ca2cd6bc | 408 | static const struct i2c_device_id max98371_i2c_id[] = { |
409 | { "max98371", 0 }, | |
209c721c | 410 | { } |
ca2cd6bc | 411 | }; |
412 | ||
413 | MODULE_DEVICE_TABLE(i2c, max98371_i2c_id); | |
414 | ||
415 | static const struct of_device_id max98371_of_match[] = { | |
416 | { .compatible = "maxim,max98371", }, | |
417 | { } | |
418 | }; | |
419 | MODULE_DEVICE_TABLE(of, max98371_of_match); | |
420 | ||
421 | static struct i2c_driver max98371_i2c_driver = { | |
422 | .driver = { | |
423 | .name = "max98371", | |
ca2cd6bc | 424 | .pm = NULL, |
425 | .of_match_table = of_match_ptr(max98371_of_match), | |
426 | }, | |
427 | .probe = max98371_i2c_probe, | |
ca2cd6bc | 428 | .id_table = max98371_i2c_id, |
429 | }; | |
430 | ||
431 | module_i2c_driver(max98371_i2c_driver); | |
432 | ||
433 | MODULE_AUTHOR("anish kumar <yesanishhere@gmail.com>"); | |
434 | MODULE_DESCRIPTION("ALSA SoC MAX98371 driver"); | |
435 | MODULE_LICENSE("GPL"); |