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 | |
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_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 | |
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(c: 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(map: max98371->regmap, MAX98371_FMT, |
210 | MAX98371_FMT_MODE_MASK, val); |
211 | return 0; |
212 | } |
213 | |
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(c: component); |
220 | int blr_clk_ratio, ch_size, channels = params_channels(p: params); |
221 | int rate = params_rate(p: params); |
222 | |
223 | switch (params_format(p: params)) { |
224 | case SNDRV_PCM_FORMAT_S8: |
225 | regmap_update_bits(map: 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(map: 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(map: 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(map: 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(map: max98371->regmap, |
253 | MAX98371_DAI_CLK, |
254 | MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_32); |
255 | break; |
256 | case 48: |
257 | regmap_update_bits(map: max98371->regmap, |
258 | MAX98371_DAI_CLK, |
259 | MAX98371_DAI_BSEL_MASK, MAX98371_DAI_BSEL_48); |
260 | break; |
261 | case 64: |
262 | regmap_update_bits(map: 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(map: max98371->regmap, |
273 | MAX98371_SPK_SR, |
274 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_32); |
275 | break; |
276 | case 44100: |
277 | regmap_update_bits(map: max98371->regmap, |
278 | MAX98371_SPK_SR, |
279 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_44); |
280 | break; |
281 | case 48000: |
282 | regmap_update_bits(map: max98371->regmap, |
283 | MAX98371_SPK_SR, |
284 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_48); |
285 | break; |
286 | case 88200: |
287 | regmap_update_bits(map: max98371->regmap, |
288 | MAX98371_SPK_SR, |
289 | MAX98371_SPK_SR_MASK, MAX98371_SPK_SR_88); |
290 | break; |
291 | case 96000: |
292 | regmap_update_bits(map: 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(map: max98371->regmap, MAX98371_MONOMIX_SRC, |
302 | MAX98371_MONOMIX_SRC_MASK, MONOMIX_RX_0_1); |
303 | regmap_update_bits(map: 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 | |
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(dev: &i2c->dev, |
373 | size: sizeof(*max98371), GFP_KERNEL); |
374 | if (!max98371) |
375 | return -ENOMEM; |
376 | |
377 | i2c_set_clientdata(client: i2c, data: max98371); |
378 | max98371->regmap = devm_regmap_init_i2c(i2c, &max98371_regmap); |
379 | if (IS_ERR(ptr: max98371->regmap)) { |
380 | ret = PTR_ERR(ptr: max98371->regmap); |
381 | dev_err(&i2c->dev, |
382 | "Failed to allocate regmap: %d\n" , ret); |
383 | return ret; |
384 | } |
385 | |
386 | ret = regmap_read(map: max98371->regmap, MAX98371_VERSION, val: ®); |
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(dev: &i2c->dev, component_driver: &max98371_component, |
394 | dai_drv: 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 | |