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Linux 4.15.6
[linux/fpc-iii.git] / sound / soc / codecs / pcm3168a.c
blobb9d1207ccef26fdc684324a0038771b609749e69
1 /*
2 * PCM3168A codec driver
3 *
4 * Copyright (C) 2015 Imagination Technologies Ltd.
5 *
6 * Author: Damien Horsley <Damien.Horsley@imgtec.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms and conditions of the GNU General Public License,
10 * version 2, as published by the Free Software Foundation.
11 */
12
13 #include <linux/clk.h>
14 #include <linux/delay.h>
15 #include <linux/module.h>
16 #include <linux/pm_runtime.h>
17 #include <linux/regulator/consumer.h>
18
19 #include <sound/pcm_params.h>
20 #include <sound/soc.h>
21 #include <sound/tlv.h>
22
23 #include "pcm3168a.h"
24
25 #define PCM3168A_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
26 SNDRV_PCM_FMTBIT_S24_3LE | \
27 SNDRV_PCM_FMTBIT_S24_LE | \
28 SNDRV_PCM_FMTBIT_S32_LE)
29
30 #define PCM3168A_FMT_I2S 0x0
31 #define PCM3168A_FMT_LEFT_J 0x1
32 #define PCM3168A_FMT_RIGHT_J 0x2
33 #define PCM3168A_FMT_RIGHT_J_16 0x3
34 #define PCM3168A_FMT_DSP_A 0x4
35 #define PCM3168A_FMT_DSP_B 0x5
36 #define PCM3168A_FMT_DSP_MASK 0x4
37
38 #define PCM3168A_NUM_SUPPLIES 6
39 static const char *const pcm3168a_supply_names[PCM3168A_NUM_SUPPLIES] = {
40 "VDD1",
41 "VDD2",
42 "VCCAD1",
43 "VCCAD2",
44 "VCCDA1",
45 "VCCDA2"
46 };
47
48 struct pcm3168a_priv {
49 struct regulator_bulk_data supplies[PCM3168A_NUM_SUPPLIES];
50 struct regmap *regmap;
51 struct clk *scki;
52 bool adc_master_mode;
53 bool dac_master_mode;
54 unsigned long sysclk;
55 unsigned int adc_fmt;
56 unsigned int dac_fmt;
57 };
58
59 static const char *const pcm3168a_roll_off[] = { "Sharp", "Slow" };
60
61 static SOC_ENUM_SINGLE_DECL(pcm3168a_d1_roll_off, PCM3168A_DAC_OP_FLT,
62 PCM3168A_DAC_FLT_SHIFT, pcm3168a_roll_off);
63 static SOC_ENUM_SINGLE_DECL(pcm3168a_d2_roll_off, PCM3168A_DAC_OP_FLT,
64 PCM3168A_DAC_FLT_SHIFT + 1, pcm3168a_roll_off);
65 static SOC_ENUM_SINGLE_DECL(pcm3168a_d3_roll_off, PCM3168A_DAC_OP_FLT,
66 PCM3168A_DAC_FLT_SHIFT + 2, pcm3168a_roll_off);
67 static SOC_ENUM_SINGLE_DECL(pcm3168a_d4_roll_off, PCM3168A_DAC_OP_FLT,
68 PCM3168A_DAC_FLT_SHIFT + 3, pcm3168a_roll_off);
69
70 static const char *const pcm3168a_volume_type[] = {
71 "Individual", "Master + Individual" };
72
73 static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_volume_type, PCM3168A_DAC_ATT_DEMP_ZF,
74 PCM3168A_DAC_ATMDDA_SHIFT, pcm3168a_volume_type);
75
76 static const char *const pcm3168a_att_speed_mult[] = { "2048", "4096" };
77
78 static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_att_mult, PCM3168A_DAC_ATT_DEMP_ZF,
79 PCM3168A_DAC_ATSPDA_SHIFT, pcm3168a_att_speed_mult);
80
81 static const char *const pcm3168a_demp[] = {
82 "Disabled", "48khz", "44.1khz", "32khz" };
83
84 static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_demp, PCM3168A_DAC_ATT_DEMP_ZF,
85 PCM3168A_DAC_DEMP_SHIFT, pcm3168a_demp);
86
87 static const char *const pcm3168a_zf_func[] = {
88 "DAC 1/2/3/4 AND", "DAC 1/2/3/4 OR", "DAC 1/2/3 AND",
89 "DAC 1/2/3 OR", "DAC 4 AND", "DAC 4 OR" };
90
91 static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_zf_func, PCM3168A_DAC_ATT_DEMP_ZF,
92 PCM3168A_DAC_AZRO_SHIFT, pcm3168a_zf_func);
93
94 static const char *const pcm3168a_pol[] = { "Active High", "Active Low" };
95
96 static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_zf_pol, PCM3168A_DAC_ATT_DEMP_ZF,
97 PCM3168A_DAC_ATSPDA_SHIFT, pcm3168a_pol);
98
99 static const char *const pcm3168a_con[] = { "Differential", "Single-Ended" };
100
101 static SOC_ENUM_DOUBLE_DECL(pcm3168a_adc1_con, PCM3168A_ADC_SEAD,
102 0, 1, pcm3168a_con);
103 static SOC_ENUM_DOUBLE_DECL(pcm3168a_adc2_con, PCM3168A_ADC_SEAD,
104 2, 3, pcm3168a_con);
105 static SOC_ENUM_DOUBLE_DECL(pcm3168a_adc3_con, PCM3168A_ADC_SEAD,
106 4, 5, pcm3168a_con);
107
108 static SOC_ENUM_SINGLE_DECL(pcm3168a_adc_volume_type, PCM3168A_ADC_ATT_OVF,
109 PCM3168A_ADC_ATMDAD_SHIFT, pcm3168a_volume_type);
110
111 static SOC_ENUM_SINGLE_DECL(pcm3168a_adc_att_mult, PCM3168A_ADC_ATT_OVF,
112 PCM3168A_ADC_ATSPAD_SHIFT, pcm3168a_att_speed_mult);
113
114 static SOC_ENUM_SINGLE_DECL(pcm3168a_adc_ov_pol, PCM3168A_ADC_ATT_OVF,
115 PCM3168A_ADC_OVFP_SHIFT, pcm3168a_pol);
116
117 /* -100db to 0db, register values 0-54 cause mute */
118 static const DECLARE_TLV_DB_SCALE(pcm3168a_dac_tlv, -10050, 50, 1);
119
120 /* -100db to 20db, register values 0-14 cause mute */
121 static const DECLARE_TLV_DB_SCALE(pcm3168a_adc_tlv, -10050, 50, 1);
122
123 static const struct snd_kcontrol_new pcm3168a_snd_controls[] = {
124 SOC_SINGLE("DAC Power-Save Switch", PCM3168A_DAC_PWR_MST_FMT,
125 PCM3168A_DAC_PSMDA_SHIFT, 1, 1),
126 SOC_ENUM("DAC1 Digital Filter roll-off", pcm3168a_d1_roll_off),
127 SOC_ENUM("DAC2 Digital Filter roll-off", pcm3168a_d2_roll_off),
128 SOC_ENUM("DAC3 Digital Filter roll-off", pcm3168a_d3_roll_off),
129 SOC_ENUM("DAC4 Digital Filter roll-off", pcm3168a_d4_roll_off),
130 SOC_DOUBLE("DAC1 Invert Switch", PCM3168A_DAC_INV, 0, 1, 1, 0),
131 SOC_DOUBLE("DAC2 Invert Switch", PCM3168A_DAC_INV, 2, 3, 1, 0),
132 SOC_DOUBLE("DAC3 Invert Switch", PCM3168A_DAC_INV, 4, 5, 1, 0),
133 SOC_DOUBLE("DAC4 Invert Switch", PCM3168A_DAC_INV, 6, 7, 1, 0),
134 SOC_DOUBLE_STS("DAC1 Zero Flag", PCM3168A_DAC_ZERO, 0, 1, 1, 0),
135 SOC_DOUBLE_STS("DAC2 Zero Flag", PCM3168A_DAC_ZERO, 2, 3, 1, 0),
136 SOC_DOUBLE_STS("DAC3 Zero Flag", PCM3168A_DAC_ZERO, 4, 5, 1, 0),
137 SOC_DOUBLE_STS("DAC4 Zero Flag", PCM3168A_DAC_ZERO, 6, 7, 1, 0),
138 SOC_ENUM("DAC Volume Control Type", pcm3168a_dac_volume_type),
139 SOC_ENUM("DAC Volume Rate Multiplier", pcm3168a_dac_att_mult),
140 SOC_ENUM("DAC De-Emphasis", pcm3168a_dac_demp),
141 SOC_ENUM("DAC Zero Flag Function", pcm3168a_dac_zf_func),
142 SOC_ENUM("DAC Zero Flag Polarity", pcm3168a_dac_zf_pol),
143 SOC_SINGLE_RANGE_TLV("Master Playback Volume",
144 PCM3168A_DAC_VOL_MASTER, 0, 54, 255, 0,
145 pcm3168a_dac_tlv),
146 SOC_DOUBLE_R_RANGE_TLV("DAC1 Playback Volume",
147 PCM3168A_DAC_VOL_CHAN_START,
148 PCM3168A_DAC_VOL_CHAN_START + 1,
149 0, 54, 255, 0, pcm3168a_dac_tlv),
150 SOC_DOUBLE_R_RANGE_TLV("DAC2 Playback Volume",
151 PCM3168A_DAC_VOL_CHAN_START + 2,
152 PCM3168A_DAC_VOL_CHAN_START + 3,
153 0, 54, 255, 0, pcm3168a_dac_tlv),
154 SOC_DOUBLE_R_RANGE_TLV("DAC3 Playback Volume",
155 PCM3168A_DAC_VOL_CHAN_START + 4,
156 PCM3168A_DAC_VOL_CHAN_START + 5,
157 0, 54, 255, 0, pcm3168a_dac_tlv),
158 SOC_DOUBLE_R_RANGE_TLV("DAC4 Playback Volume",
159 PCM3168A_DAC_VOL_CHAN_START + 6,
160 PCM3168A_DAC_VOL_CHAN_START + 7,
161 0, 54, 255, 0, pcm3168a_dac_tlv),
162 SOC_SINGLE("ADC1 High-Pass Filter Switch", PCM3168A_ADC_PWR_HPFB,
163 PCM3168A_ADC_BYP_SHIFT, 1, 1),
164 SOC_SINGLE("ADC2 High-Pass Filter Switch", PCM3168A_ADC_PWR_HPFB,
165 PCM3168A_ADC_BYP_SHIFT + 1, 1, 1),
166 SOC_SINGLE("ADC3 High-Pass Filter Switch", PCM3168A_ADC_PWR_HPFB,
167 PCM3168A_ADC_BYP_SHIFT + 2, 1, 1),
168 SOC_ENUM("ADC1 Connection Type", pcm3168a_adc1_con),
169 SOC_ENUM("ADC2 Connection Type", pcm3168a_adc2_con),
170 SOC_ENUM("ADC3 Connection Type", pcm3168a_adc3_con),
171 SOC_DOUBLE("ADC1 Invert Switch", PCM3168A_ADC_INV, 0, 1, 1, 0),
172 SOC_DOUBLE("ADC2 Invert Switch", PCM3168A_ADC_INV, 2, 3, 1, 0),
173 SOC_DOUBLE("ADC3 Invert Switch", PCM3168A_ADC_INV, 4, 5, 1, 0),
174 SOC_DOUBLE("ADC1 Mute Switch", PCM3168A_ADC_MUTE, 0, 1, 1, 0),
175 SOC_DOUBLE("ADC2 Mute Switch", PCM3168A_ADC_MUTE, 2, 3, 1, 0),
176 SOC_DOUBLE("ADC3 Mute Switch", PCM3168A_ADC_MUTE, 4, 5, 1, 0),
177 SOC_DOUBLE_STS("ADC1 Overflow Flag", PCM3168A_ADC_OV, 0, 1, 1, 0),
178 SOC_DOUBLE_STS("ADC2 Overflow Flag", PCM3168A_ADC_OV, 2, 3, 1, 0),
179 SOC_DOUBLE_STS("ADC3 Overflow Flag", PCM3168A_ADC_OV, 4, 5, 1, 0),
180 SOC_ENUM("ADC Volume Control Type", pcm3168a_adc_volume_type),
181 SOC_ENUM("ADC Volume Rate Multiplier", pcm3168a_adc_att_mult),
182 SOC_ENUM("ADC Overflow Flag Polarity", pcm3168a_adc_ov_pol),
183 SOC_SINGLE_RANGE_TLV("Master Capture Volume",
184 PCM3168A_ADC_VOL_MASTER, 0, 14, 255, 0,
185 pcm3168a_adc_tlv),
186 SOC_DOUBLE_R_RANGE_TLV("ADC1 Capture Volume",
187 PCM3168A_ADC_VOL_CHAN_START,
188 PCM3168A_ADC_VOL_CHAN_START + 1,
189 0, 14, 255, 0, pcm3168a_adc_tlv),
190 SOC_DOUBLE_R_RANGE_TLV("ADC2 Capture Volume",
191 PCM3168A_ADC_VOL_CHAN_START + 2,
192 PCM3168A_ADC_VOL_CHAN_START + 3,
193 0, 14, 255, 0, pcm3168a_adc_tlv),
194 SOC_DOUBLE_R_RANGE_TLV("ADC3 Capture Volume",
195 PCM3168A_ADC_VOL_CHAN_START + 4,
196 PCM3168A_ADC_VOL_CHAN_START + 5,
197 0, 14, 255, 0, pcm3168a_adc_tlv)
198 };
199
200 static const struct snd_soc_dapm_widget pcm3168a_dapm_widgets[] = {
201 SND_SOC_DAPM_DAC("DAC1", "Playback", PCM3168A_DAC_OP_FLT,
202 PCM3168A_DAC_OPEDA_SHIFT, 1),
203 SND_SOC_DAPM_DAC("DAC2", "Playback", PCM3168A_DAC_OP_FLT,
204 PCM3168A_DAC_OPEDA_SHIFT + 1, 1),
205 SND_SOC_DAPM_DAC("DAC3", "Playback", PCM3168A_DAC_OP_FLT,
206 PCM3168A_DAC_OPEDA_SHIFT + 2, 1),
207 SND_SOC_DAPM_DAC("DAC4", "Playback", PCM3168A_DAC_OP_FLT,
208 PCM3168A_DAC_OPEDA_SHIFT + 3, 1),
209
210 SND_SOC_DAPM_OUTPUT("AOUT1L"),
211 SND_SOC_DAPM_OUTPUT("AOUT1R"),
212 SND_SOC_DAPM_OUTPUT("AOUT2L"),
213 SND_SOC_DAPM_OUTPUT("AOUT2R"),
214 SND_SOC_DAPM_OUTPUT("AOUT3L"),
215 SND_SOC_DAPM_OUTPUT("AOUT3R"),
216 SND_SOC_DAPM_OUTPUT("AOUT4L"),
217 SND_SOC_DAPM_OUTPUT("AOUT4R"),
218
219 SND_SOC_DAPM_ADC("ADC1", "Capture", PCM3168A_ADC_PWR_HPFB,
220 PCM3168A_ADC_PSVAD_SHIFT, 1),
221 SND_SOC_DAPM_ADC("ADC2", "Capture", PCM3168A_ADC_PWR_HPFB,
222 PCM3168A_ADC_PSVAD_SHIFT + 1, 1),
223 SND_SOC_DAPM_ADC("ADC3", "Capture", PCM3168A_ADC_PWR_HPFB,
224 PCM3168A_ADC_PSVAD_SHIFT + 2, 1),
225
226 SND_SOC_DAPM_INPUT("AIN1L"),
227 SND_SOC_DAPM_INPUT("AIN1R"),
228 SND_SOC_DAPM_INPUT("AIN2L"),
229 SND_SOC_DAPM_INPUT("AIN2R"),
230 SND_SOC_DAPM_INPUT("AIN3L"),
231 SND_SOC_DAPM_INPUT("AIN3R")
232 };
233
234 static const struct snd_soc_dapm_route pcm3168a_dapm_routes[] = {
235 /* Playback */
236 { "AOUT1L", NULL, "DAC1" },
237 { "AOUT1R", NULL, "DAC1" },
238
239 { "AOUT2L", NULL, "DAC2" },
240 { "AOUT2R", NULL, "DAC2" },
241
242 { "AOUT3L", NULL, "DAC3" },
243 { "AOUT3R", NULL, "DAC3" },
244
245 { "AOUT4L", NULL, "DAC4" },
246 { "AOUT4R", NULL, "DAC4" },
247
248 /* Capture */
249 { "ADC1", NULL, "AIN1L" },
250 { "ADC1", NULL, "AIN1R" },
251
252 { "ADC2", NULL, "AIN2L" },
253 { "ADC2", NULL, "AIN2R" },
254
255 { "ADC3", NULL, "AIN3L" },
256 { "ADC3", NULL, "AIN3R" }
257 };
258
259 static unsigned int pcm3168a_scki_ratios[] = {
260 768,
261 512,
262 384,
263 256,
264 192,
265 128
266 };
267
268 #define PCM3168A_NUM_SCKI_RATIOS_DAC ARRAY_SIZE(pcm3168a_scki_ratios)
269 #define PCM3168A_NUM_SCKI_RATIOS_ADC (ARRAY_SIZE(pcm3168a_scki_ratios) - 2)
270
271 #define PCM1368A_MAX_SYSCLK 36864000
272
273 static int pcm3168a_reset(struct pcm3168a_priv *pcm3168a)
274 {
275 int ret;
276
277 ret = regmap_write(pcm3168a->regmap, PCM3168A_RST_SMODE, 0);
278 if (ret)
279 return ret;
280
281 /* Internal reset is de-asserted after 3846 SCKI cycles */
282 msleep(DIV_ROUND_UP(3846 * 1000, pcm3168a->sysclk));
283
284 return regmap_write(pcm3168a->regmap, PCM3168A_RST_SMODE,
285 PCM3168A_MRST_MASK | PCM3168A_SRST_MASK);
286 }
287
288 static int pcm3168a_digital_mute(struct snd_soc_dai *dai, int mute)
289 {
290 struct snd_soc_codec *codec = dai->codec;
291 struct pcm3168a_priv *pcm3168a = snd_soc_codec_get_drvdata(codec);
292
293 regmap_write(pcm3168a->regmap, PCM3168A_DAC_MUTE, mute ? 0xff : 0);
294
295 return 0;
296 }
297
298 static int pcm3168a_set_dai_sysclk(struct snd_soc_dai *dai,
299 int clk_id, unsigned int freq, int dir)
300 {
301 struct pcm3168a_priv *pcm3168a = snd_soc_codec_get_drvdata(dai->codec);
302 int ret;
303
304 if (freq > PCM1368A_MAX_SYSCLK)
305 return -EINVAL;
306
307 ret = clk_set_rate(pcm3168a->scki, freq);
308 if (ret)
309 return ret;
310
311 pcm3168a->sysclk = freq;
312
313 return 0;
314 }
315
316 static int pcm3168a_set_dai_fmt(struct snd_soc_dai *dai,
317 unsigned int format, bool dac)
318 {
319 struct snd_soc_codec *codec = dai->codec;
320 struct pcm3168a_priv *pcm3168a = snd_soc_codec_get_drvdata(codec);
321 u32 fmt, reg, mask, shift;
322 bool master_mode;
323
324 switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
325 case SND_SOC_DAIFMT_LEFT_J:
326 fmt = PCM3168A_FMT_LEFT_J;
327 break;
328 case SND_SOC_DAIFMT_I2S:
329 fmt = PCM3168A_FMT_I2S;
330 break;
331 case SND_SOC_DAIFMT_RIGHT_J:
332 fmt = PCM3168A_FMT_RIGHT_J;
333 break;
334 case SND_SOC_DAIFMT_DSP_A:
335 fmt = PCM3168A_FMT_DSP_A;
336 break;
337 case SND_SOC_DAIFMT_DSP_B:
338 fmt = PCM3168A_FMT_DSP_B;
339 break;
340 default:
341 dev_err(codec->dev, "unsupported dai format\n");
342 return -EINVAL;
343 }
344
345 switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
346 case SND_SOC_DAIFMT_CBS_CFS:
347 master_mode = false;
348 break;
349 case SND_SOC_DAIFMT_CBM_CFM:
350 master_mode = true;
351 break;
352 default:
353 dev_err(codec->dev, "unsupported master/slave mode\n");
354 return -EINVAL;
355 }
356
357 switch (format & SND_SOC_DAIFMT_INV_MASK) {
358 case SND_SOC_DAIFMT_NB_NF:
359 break;
360 default:
361 return -EINVAL;
362 }
363
364 if (dac) {
365 reg = PCM3168A_DAC_PWR_MST_FMT;
366 mask = PCM3168A_DAC_FMT_MASK;
367 shift = PCM3168A_DAC_FMT_SHIFT;
368 pcm3168a->dac_master_mode = master_mode;
369 pcm3168a->dac_fmt = fmt;
370 } else {
371 reg = PCM3168A_ADC_MST_FMT;
372 mask = PCM3168A_ADC_FMTAD_MASK;
373 shift = PCM3168A_ADC_FMTAD_SHIFT;
374 pcm3168a->adc_master_mode = master_mode;
375 pcm3168a->adc_fmt = fmt;
376 }
377
378 regmap_update_bits(pcm3168a->regmap, reg, mask, fmt << shift);
379
380 return 0;
381 }
382
383 static int pcm3168a_set_dai_fmt_dac(struct snd_soc_dai *dai,
384 unsigned int format)
385 {
386 return pcm3168a_set_dai_fmt(dai, format, true);
387 }
388
389 static int pcm3168a_set_dai_fmt_adc(struct snd_soc_dai *dai,
390 unsigned int format)
391 {
392 return pcm3168a_set_dai_fmt(dai, format, false);
393 }
394
395 static int pcm3168a_hw_params(struct snd_pcm_substream *substream,
396 struct snd_pcm_hw_params *params,
397 struct snd_soc_dai *dai)
398 {
399 struct snd_soc_codec *codec = dai->codec;
400 struct pcm3168a_priv *pcm3168a = snd_soc_codec_get_drvdata(codec);
401 bool tx, master_mode;
402 u32 val, mask, shift, reg;
403 unsigned int rate, fmt, ratio, max_ratio;
404 int i, min_frame_size;
405
406 rate = params_rate(params);
407
408 ratio = pcm3168a->sysclk / rate;
409
410 tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
411 if (tx) {
412 max_ratio = PCM3168A_NUM_SCKI_RATIOS_DAC;
413 reg = PCM3168A_DAC_PWR_MST_FMT;
414 mask = PCM3168A_DAC_MSDA_MASK;
415 shift = PCM3168A_DAC_MSDA_SHIFT;
416 master_mode = pcm3168a->dac_master_mode;
417 fmt = pcm3168a->dac_fmt;
418 } else {
419 max_ratio = PCM3168A_NUM_SCKI_RATIOS_ADC;
420 reg = PCM3168A_ADC_MST_FMT;
421 mask = PCM3168A_ADC_MSAD_MASK;
422 shift = PCM3168A_ADC_MSAD_SHIFT;
423 master_mode = pcm3168a->adc_master_mode;
424 fmt = pcm3168a->adc_fmt;
425 }
426
427 for (i = 0; i < max_ratio; i++) {
428 if (pcm3168a_scki_ratios[i] == ratio)
429 break;
430 }
431
432 if (i == max_ratio) {
433 dev_err(codec->dev, "unsupported sysclk ratio\n");
434 return -EINVAL;
435 }
436
437 min_frame_size = params_width(params) * 2;
438 switch (min_frame_size) {
439 case 32:
440 if (master_mode || (fmt != PCM3168A_FMT_RIGHT_J)) {
441 dev_err(codec->dev, "32-bit frames are supported only for slave mode using right justified\n");
442 return -EINVAL;
443 }
444 fmt = PCM3168A_FMT_RIGHT_J_16;
445 break;
446 case 48:
447 if (master_mode || (fmt & PCM3168A_FMT_DSP_MASK)) {
448 dev_err(codec->dev, "48-bit frames not supported in master mode, or slave mode using DSP\n");
449 return -EINVAL;
450 }
451 break;
452 case 64:
453 break;
454 default:
455 dev_err(codec->dev, "unsupported frame size: %d\n", min_frame_size);
456 return -EINVAL;
457 }
458
459 if (master_mode)
460 val = ((i + 1) << shift);
461 else
462 val = 0;
463
464 regmap_update_bits(pcm3168a->regmap, reg, mask, val);
465
466 if (tx) {
467 mask = PCM3168A_DAC_FMT_MASK;
468 shift = PCM3168A_DAC_FMT_SHIFT;
469 } else {
470 mask = PCM3168A_ADC_FMTAD_MASK;
471 shift = PCM3168A_ADC_FMTAD_SHIFT;
472 }
473
474 regmap_update_bits(pcm3168a->regmap, reg, mask, fmt << shift);
475
476 return 0;
477 }
478
479 static const struct snd_soc_dai_ops pcm3168a_dac_dai_ops = {
480 .set_fmt = pcm3168a_set_dai_fmt_dac,
481 .set_sysclk = pcm3168a_set_dai_sysclk,
482 .hw_params = pcm3168a_hw_params,
483 .digital_mute = pcm3168a_digital_mute
484 };
485
486 static const struct snd_soc_dai_ops pcm3168a_adc_dai_ops = {
487 .set_fmt = pcm3168a_set_dai_fmt_adc,
488 .set_sysclk = pcm3168a_set_dai_sysclk,
489 .hw_params = pcm3168a_hw_params
490 };
491
492 static struct snd_soc_dai_driver pcm3168a_dais[] = {
493 {
494 .name = "pcm3168a-dac",
495 .playback = {
496 .stream_name = "Playback",
497 .channels_min = 1,
498 .channels_max = 8,
499 .rates = SNDRV_PCM_RATE_8000_192000,
500 .formats = PCM3168A_FORMATS
501 },
502 .ops = &pcm3168a_dac_dai_ops
503 },
504 {
505 .name = "pcm3168a-adc",
506 .capture = {
507 .stream_name = "Capture",
508 .channels_min = 1,
509 .channels_max = 6,
510 .rates = SNDRV_PCM_RATE_8000_96000,
511 .formats = PCM3168A_FORMATS
512 },
513 .ops = &pcm3168a_adc_dai_ops
514 },
515 };
516
517 static const struct reg_default pcm3168a_reg_default[] = {
518 { PCM3168A_RST_SMODE, PCM3168A_MRST_MASK | PCM3168A_SRST_MASK },
519 { PCM3168A_DAC_PWR_MST_FMT, 0x00 },
520 { PCM3168A_DAC_OP_FLT, 0x00 },
521 { PCM3168A_DAC_INV, 0x00 },
522 { PCM3168A_DAC_MUTE, 0x00 },
523 { PCM3168A_DAC_ZERO, 0x00 },
524 { PCM3168A_DAC_ATT_DEMP_ZF, 0x00 },
525 { PCM3168A_DAC_VOL_MASTER, 0xff },
526 { PCM3168A_DAC_VOL_CHAN_START, 0xff },
527 { PCM3168A_DAC_VOL_CHAN_START + 1, 0xff },
528 { PCM3168A_DAC_VOL_CHAN_START + 2, 0xff },
529 { PCM3168A_DAC_VOL_CHAN_START + 3, 0xff },
530 { PCM3168A_DAC_VOL_CHAN_START + 4, 0xff },
531 { PCM3168A_DAC_VOL_CHAN_START + 5, 0xff },
532 { PCM3168A_DAC_VOL_CHAN_START + 6, 0xff },
533 { PCM3168A_DAC_VOL_CHAN_START + 7, 0xff },
534 { PCM3168A_ADC_SMODE, 0x00 },
535 { PCM3168A_ADC_MST_FMT, 0x00 },
536 { PCM3168A_ADC_PWR_HPFB, 0x00 },
537 { PCM3168A_ADC_SEAD, 0x00 },
538 { PCM3168A_ADC_INV, 0x00 },
539 { PCM3168A_ADC_MUTE, 0x00 },
540 { PCM3168A_ADC_OV, 0x00 },
541 { PCM3168A_ADC_ATT_OVF, 0x00 },
542 { PCM3168A_ADC_VOL_MASTER, 0xd3 },
543 { PCM3168A_ADC_VOL_CHAN_START, 0xd3 },
544 { PCM3168A_ADC_VOL_CHAN_START + 1, 0xd3 },
545 { PCM3168A_ADC_VOL_CHAN_START + 2, 0xd3 },
546 { PCM3168A_ADC_VOL_CHAN_START + 3, 0xd3 },
547 { PCM3168A_ADC_VOL_CHAN_START + 4, 0xd3 },
548 { PCM3168A_ADC_VOL_CHAN_START + 5, 0xd3 }
549 };
550
551 static bool pcm3168a_readable_register(struct device *dev, unsigned int reg)
552 {
553 if (reg >= PCM3168A_RST_SMODE)
554 return true;
555 else
556 return false;
557 }
558
559 static bool pcm3168a_volatile_register(struct device *dev, unsigned int reg)
560 {
561 switch (reg) {
562 case PCM3168A_DAC_ZERO:
563 case PCM3168A_ADC_OV:
564 return true;
565 default:
566 return false;
567 }
568 }
569
570 static bool pcm3168a_writeable_register(struct device *dev, unsigned int reg)
571 {
572 if (reg < PCM3168A_RST_SMODE)
573 return false;
574
575 switch (reg) {
576 case PCM3168A_DAC_ZERO:
577 case PCM3168A_ADC_OV:
578 return false;
579 default:
580 return true;
581 }
582 }
583
584 const struct regmap_config pcm3168a_regmap = {
585 .reg_bits = 8,
586 .val_bits = 8,
587
588 .max_register = PCM3168A_ADC_VOL_CHAN_START + 5,
589 .reg_defaults = pcm3168a_reg_default,
590 .num_reg_defaults = ARRAY_SIZE(pcm3168a_reg_default),
591 .readable_reg = pcm3168a_readable_register,
592 .volatile_reg = pcm3168a_volatile_register,
593 .writeable_reg = pcm3168a_writeable_register,
594 .cache_type = REGCACHE_FLAT
595 };
596 EXPORT_SYMBOL_GPL(pcm3168a_regmap);
597
598 static const struct snd_soc_codec_driver pcm3168a_driver = {
599 .idle_bias_off = true,
600 .component_driver = {
601 .controls = pcm3168a_snd_controls,
602 .num_controls = ARRAY_SIZE(pcm3168a_snd_controls),
603 .dapm_widgets = pcm3168a_dapm_widgets,
604 .num_dapm_widgets = ARRAY_SIZE(pcm3168a_dapm_widgets),
605 .dapm_routes = pcm3168a_dapm_routes,
606 .num_dapm_routes = ARRAY_SIZE(pcm3168a_dapm_routes)
607 },
608 };
609
610 int pcm3168a_probe(struct device *dev, struct regmap *regmap)
611 {
612 struct pcm3168a_priv *pcm3168a;
613 int ret, i;
614
615 pcm3168a = devm_kzalloc(dev, sizeof(*pcm3168a), GFP_KERNEL);
616 if (pcm3168a == NULL)
617 return -ENOMEM;
618
619 dev_set_drvdata(dev, pcm3168a);
620
621 pcm3168a->scki = devm_clk_get(dev, "scki");
622 if (IS_ERR(pcm3168a->scki)) {
623 ret = PTR_ERR(pcm3168a->scki);
624 if (ret != -EPROBE_DEFER)
625 dev_err(dev, "failed to acquire clock 'scki': %d\n", ret);
626 return ret;
627 }
628
629 ret = clk_prepare_enable(pcm3168a->scki);
630 if (ret) {
631 dev_err(dev, "Failed to enable mclk: %d\n", ret);
632 return ret;
633 }
634
635 pcm3168a->sysclk = clk_get_rate(pcm3168a->scki);
636
637 for (i = 0; i < ARRAY_SIZE(pcm3168a->supplies); i++)
638 pcm3168a->supplies[i].supply = pcm3168a_supply_names[i];
639
640 ret = devm_regulator_bulk_get(dev,
641 ARRAY_SIZE(pcm3168a->supplies), pcm3168a->supplies);
642 if (ret) {
643 if (ret != -EPROBE_DEFER)
644 dev_err(dev, "failed to request supplies: %d\n", ret);
645 goto err_clk;
646 }
647
648 ret = regulator_bulk_enable(ARRAY_SIZE(pcm3168a->supplies),
649 pcm3168a->supplies);
650 if (ret) {
651 dev_err(dev, "failed to enable supplies: %d\n", ret);
652 goto err_clk;
653 }
654
655 pcm3168a->regmap = regmap;
656 if (IS_ERR(pcm3168a->regmap)) {
657 ret = PTR_ERR(pcm3168a->regmap);
658 dev_err(dev, "failed to allocate regmap: %d\n", ret);
659 goto err_regulator;
660 }
661
662 ret = pcm3168a_reset(pcm3168a);
663 if (ret) {
664 dev_err(dev, "Failed to reset device: %d\n", ret);
665 goto err_regulator;
666 }
667
668 pm_runtime_set_active(dev);
669 pm_runtime_enable(dev);
670 pm_runtime_idle(dev);
671
672 ret = snd_soc_register_codec(dev, &pcm3168a_driver, pcm3168a_dais,
673 ARRAY_SIZE(pcm3168a_dais));
674 if (ret) {
675 dev_err(dev, "failed to register codec: %d\n", ret);
676 goto err_regulator;
677 }
678
679 return 0;
680
681 err_regulator:
682 regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
683 pcm3168a->supplies);
684 err_clk:
685 clk_disable_unprepare(pcm3168a->scki);
686
687 return ret;
688 }
689 EXPORT_SYMBOL_GPL(pcm3168a_probe);
690
691 void pcm3168a_remove(struct device *dev)
692 {
693 struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
694
695 snd_soc_unregister_codec(dev);
696 pm_runtime_disable(dev);
697 regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
698 pcm3168a->supplies);
699 clk_disable_unprepare(pcm3168a->scki);
700 }
701 EXPORT_SYMBOL_GPL(pcm3168a_remove);
702
703 #ifdef CONFIG_PM
704 static int pcm3168a_rt_resume(struct device *dev)
705 {
706 struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
707 int ret;
708
709 ret = clk_prepare_enable(pcm3168a->scki);
710 if (ret) {
711 dev_err(dev, "Failed to enable mclk: %d\n", ret);
712 return ret;
713 }
714
715 ret = regulator_bulk_enable(ARRAY_SIZE(pcm3168a->supplies),
716 pcm3168a->supplies);
717 if (ret) {
718 dev_err(dev, "Failed to enable supplies: %d\n", ret);
719 goto err_clk;
720 }
721
722 ret = pcm3168a_reset(pcm3168a);
723 if (ret) {
724 dev_err(dev, "Failed to reset device: %d\n", ret);
725 goto err_regulator;
726 }
727
728 regcache_cache_only(pcm3168a->regmap, false);
729
730 regcache_mark_dirty(pcm3168a->regmap);
731
732 ret = regcache_sync(pcm3168a->regmap);
733 if (ret) {
734 dev_err(dev, "Failed to sync regmap: %d\n", ret);
735 goto err_regulator;
736 }
737
738 return 0;
739
740 err_regulator:
741 regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
742 pcm3168a->supplies);
743 err_clk:
744 clk_disable_unprepare(pcm3168a->scki);
745
746 return ret;
747 }
748
749 static int pcm3168a_rt_suspend(struct device *dev)
750 {
751 struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
752
753 regcache_cache_only(pcm3168a->regmap, true);
754
755 regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
756 pcm3168a->supplies);
757
758 clk_disable_unprepare(pcm3168a->scki);
759
760 return 0;
761 }
762 #endif
763
764 const struct dev_pm_ops pcm3168a_pm_ops = {
765 SET_RUNTIME_PM_OPS(pcm3168a_rt_suspend, pcm3168a_rt_resume, NULL)
766 };
767 EXPORT_SYMBOL_GPL(pcm3168a_pm_ops);
768
769 MODULE_DESCRIPTION("PCM3168A codec driver");
770 MODULE_AUTHOR("Damien Horsley <Damien.Horsley@imgtec.com>");
771 MODULE_LICENSE("GPL v2");
Linux with added FPC-III support