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ACPI: EC: Rework flushing of pending work
[linux/fpc-iii.git] / sound / soc / codecs / pcm3168a.c
blob88b75695fbf7f582a46d837877d9522a385b61c4
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * PCM3168A codec driver
4 *
5 * Copyright (C) 2015 Imagination Technologies Ltd.
6 *
7 * Author: Damien Horsley <Damien.Horsley@imgtec.com>
8 */
9
10 #include <linux/clk.h>
11 #include <linux/delay.h>
12 #include <linux/module.h>
13 #include <linux/pm_runtime.h>
14 #include <linux/regulator/consumer.h>
15
16 #include <sound/pcm_params.h>
17 #include <sound/soc.h>
18 #include <sound/tlv.h>
19
20 #include "pcm3168a.h"
21
22 #define PCM3168A_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
23 SNDRV_PCM_FMTBIT_S24_3LE | \
24 SNDRV_PCM_FMTBIT_S24_LE)
25
26 #define PCM3168A_FMT_I2S 0x0
27 #define PCM3168A_FMT_LEFT_J 0x1
28 #define PCM3168A_FMT_RIGHT_J 0x2
29 #define PCM3168A_FMT_RIGHT_J_16 0x3
30 #define PCM3168A_FMT_DSP_A 0x4
31 #define PCM3168A_FMT_DSP_B 0x5
32 #define PCM3168A_FMT_I2S_TDM 0x6
33 #define PCM3168A_FMT_LEFT_J_TDM 0x7
34 #define PCM3168A_FMT_DSP_MASK 0x4
35
36 #define PCM3168A_NUM_SUPPLIES 6
37 static const char *const pcm3168a_supply_names[PCM3168A_NUM_SUPPLIES] = {
38 "VDD1",
39 "VDD2",
40 "VCCAD1",
41 "VCCAD2",
42 "VCCDA1",
43 "VCCDA2"
44 };
45
46 #define PCM3168A_DAI_DAC 0
47 #define PCM3168A_DAI_ADC 1
48
49 /* ADC/DAC side parameters */
50 struct pcm3168a_io_params {
51 bool master_mode;
52 unsigned int fmt;
53 int tdm_slots;
54 u32 tdm_mask;
55 int slot_width;
56 };
57
58 struct pcm3168a_priv {
59 struct regulator_bulk_data supplies[PCM3168A_NUM_SUPPLIES];
60 struct regmap *regmap;
61 struct clk *scki;
62 unsigned long sysclk;
63
64 struct pcm3168a_io_params io_params[2];
65 };
66
67 static const char *const pcm3168a_roll_off[] = { "Sharp", "Slow" };
68
69 static SOC_ENUM_SINGLE_DECL(pcm3168a_d1_roll_off, PCM3168A_DAC_OP_FLT,
70 PCM3168A_DAC_FLT_SHIFT, pcm3168a_roll_off);
71 static SOC_ENUM_SINGLE_DECL(pcm3168a_d2_roll_off, PCM3168A_DAC_OP_FLT,
72 PCM3168A_DAC_FLT_SHIFT + 1, pcm3168a_roll_off);
73 static SOC_ENUM_SINGLE_DECL(pcm3168a_d3_roll_off, PCM3168A_DAC_OP_FLT,
74 PCM3168A_DAC_FLT_SHIFT + 2, pcm3168a_roll_off);
75 static SOC_ENUM_SINGLE_DECL(pcm3168a_d4_roll_off, PCM3168A_DAC_OP_FLT,
76 PCM3168A_DAC_FLT_SHIFT + 3, pcm3168a_roll_off);
77
78 static const char *const pcm3168a_volume_type[] = {
79 "Individual", "Master + Individual" };
80
81 static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_volume_type, PCM3168A_DAC_ATT_DEMP_ZF,
82 PCM3168A_DAC_ATMDDA_SHIFT, pcm3168a_volume_type);
83
84 static const char *const pcm3168a_att_speed_mult[] = { "2048", "4096" };
85
86 static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_att_mult, PCM3168A_DAC_ATT_DEMP_ZF,
87 PCM3168A_DAC_ATSPDA_SHIFT, pcm3168a_att_speed_mult);
88
89 static const char *const pcm3168a_demp[] = {
90 "Disabled", "48khz", "44.1khz", "32khz" };
91
92 static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_demp, PCM3168A_DAC_ATT_DEMP_ZF,
93 PCM3168A_DAC_DEMP_SHIFT, pcm3168a_demp);
94
95 static const char *const pcm3168a_zf_func[] = {
96 "DAC 1/2/3/4 AND", "DAC 1/2/3/4 OR", "DAC 1/2/3 AND",
97 "DAC 1/2/3 OR", "DAC 4 AND", "DAC 4 OR" };
98
99 static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_zf_func, PCM3168A_DAC_ATT_DEMP_ZF,
100 PCM3168A_DAC_AZRO_SHIFT, pcm3168a_zf_func);
101
102 static const char *const pcm3168a_pol[] = { "Active High", "Active Low" };
103
104 static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_zf_pol, PCM3168A_DAC_ATT_DEMP_ZF,
105 PCM3168A_DAC_ATSPDA_SHIFT, pcm3168a_pol);
106
107 static const char *const pcm3168a_con[] = { "Differential", "Single-Ended" };
108
109 static SOC_ENUM_DOUBLE_DECL(pcm3168a_adc1_con, PCM3168A_ADC_SEAD,
110 0, 1, pcm3168a_con);
111 static SOC_ENUM_DOUBLE_DECL(pcm3168a_adc2_con, PCM3168A_ADC_SEAD,
112 2, 3, pcm3168a_con);
113 static SOC_ENUM_DOUBLE_DECL(pcm3168a_adc3_con, PCM3168A_ADC_SEAD,
114 4, 5, pcm3168a_con);
115
116 static SOC_ENUM_SINGLE_DECL(pcm3168a_adc_volume_type, PCM3168A_ADC_ATT_OVF,
117 PCM3168A_ADC_ATMDAD_SHIFT, pcm3168a_volume_type);
118
119 static SOC_ENUM_SINGLE_DECL(pcm3168a_adc_att_mult, PCM3168A_ADC_ATT_OVF,
120 PCM3168A_ADC_ATSPAD_SHIFT, pcm3168a_att_speed_mult);
121
122 static SOC_ENUM_SINGLE_DECL(pcm3168a_adc_ov_pol, PCM3168A_ADC_ATT_OVF,
123 PCM3168A_ADC_OVFP_SHIFT, pcm3168a_pol);
124
125 /* -100db to 0db, register values 0-54 cause mute */
126 static const DECLARE_TLV_DB_SCALE(pcm3168a_dac_tlv, -10050, 50, 1);
127
128 /* -100db to 20db, register values 0-14 cause mute */
129 static const DECLARE_TLV_DB_SCALE(pcm3168a_adc_tlv, -10050, 50, 1);
130
131 static const struct snd_kcontrol_new pcm3168a_snd_controls[] = {
132 SOC_SINGLE("DAC Power-Save Switch", PCM3168A_DAC_PWR_MST_FMT,
133 PCM3168A_DAC_PSMDA_SHIFT, 1, 1),
134 SOC_ENUM("DAC1 Digital Filter roll-off", pcm3168a_d1_roll_off),
135 SOC_ENUM("DAC2 Digital Filter roll-off", pcm3168a_d2_roll_off),
136 SOC_ENUM("DAC3 Digital Filter roll-off", pcm3168a_d3_roll_off),
137 SOC_ENUM("DAC4 Digital Filter roll-off", pcm3168a_d4_roll_off),
138 SOC_DOUBLE("DAC1 Invert Switch", PCM3168A_DAC_INV, 0, 1, 1, 0),
139 SOC_DOUBLE("DAC2 Invert Switch", PCM3168A_DAC_INV, 2, 3, 1, 0),
140 SOC_DOUBLE("DAC3 Invert Switch", PCM3168A_DAC_INV, 4, 5, 1, 0),
141 SOC_DOUBLE("DAC4 Invert Switch", PCM3168A_DAC_INV, 6, 7, 1, 0),
142 SOC_ENUM("DAC Volume Control Type", pcm3168a_dac_volume_type),
143 SOC_ENUM("DAC Volume Rate Multiplier", pcm3168a_dac_att_mult),
144 SOC_ENUM("DAC De-Emphasis", pcm3168a_dac_demp),
145 SOC_ENUM("DAC Zero Flag Function", pcm3168a_dac_zf_func),
146 SOC_ENUM("DAC Zero Flag Polarity", pcm3168a_dac_zf_pol),
147 SOC_SINGLE_RANGE_TLV("Master Playback Volume",
148 PCM3168A_DAC_VOL_MASTER, 0, 54, 255, 0,
149 pcm3168a_dac_tlv),
150 SOC_DOUBLE_R_RANGE_TLV("DAC1 Playback Volume",
151 PCM3168A_DAC_VOL_CHAN_START,
152 PCM3168A_DAC_VOL_CHAN_START + 1,
153 0, 54, 255, 0, pcm3168a_dac_tlv),
154 SOC_DOUBLE_R_RANGE_TLV("DAC2 Playback Volume",
155 PCM3168A_DAC_VOL_CHAN_START + 2,
156 PCM3168A_DAC_VOL_CHAN_START + 3,
157 0, 54, 255, 0, pcm3168a_dac_tlv),
158 SOC_DOUBLE_R_RANGE_TLV("DAC3 Playback Volume",
159 PCM3168A_DAC_VOL_CHAN_START + 4,
160 PCM3168A_DAC_VOL_CHAN_START + 5,
161 0, 54, 255, 0, pcm3168a_dac_tlv),
162 SOC_DOUBLE_R_RANGE_TLV("DAC4 Playback Volume",
163 PCM3168A_DAC_VOL_CHAN_START + 6,
164 PCM3168A_DAC_VOL_CHAN_START + 7,
165 0, 54, 255, 0, pcm3168a_dac_tlv),
166 SOC_SINGLE("ADC1 High-Pass Filter Switch", PCM3168A_ADC_PWR_HPFB,
167 PCM3168A_ADC_BYP_SHIFT, 1, 1),
168 SOC_SINGLE("ADC2 High-Pass Filter Switch", PCM3168A_ADC_PWR_HPFB,
169 PCM3168A_ADC_BYP_SHIFT + 1, 1, 1),
170 SOC_SINGLE("ADC3 High-Pass Filter Switch", PCM3168A_ADC_PWR_HPFB,
171 PCM3168A_ADC_BYP_SHIFT + 2, 1, 1),
172 SOC_ENUM("ADC1 Connection Type", pcm3168a_adc1_con),
173 SOC_ENUM("ADC2 Connection Type", pcm3168a_adc2_con),
174 SOC_ENUM("ADC3 Connection Type", pcm3168a_adc3_con),
175 SOC_DOUBLE("ADC1 Invert Switch", PCM3168A_ADC_INV, 0, 1, 1, 0),
176 SOC_DOUBLE("ADC2 Invert Switch", PCM3168A_ADC_INV, 2, 3, 1, 0),
177 SOC_DOUBLE("ADC3 Invert Switch", PCM3168A_ADC_INV, 4, 5, 1, 0),
178 SOC_DOUBLE("ADC1 Mute Switch", PCM3168A_ADC_MUTE, 0, 1, 1, 0),
179 SOC_DOUBLE("ADC2 Mute Switch", PCM3168A_ADC_MUTE, 2, 3, 1, 0),
180 SOC_DOUBLE("ADC3 Mute Switch", PCM3168A_ADC_MUTE, 4, 5, 1, 0),
181 SOC_ENUM("ADC Volume Control Type", pcm3168a_adc_volume_type),
182 SOC_ENUM("ADC Volume Rate Multiplier", pcm3168a_adc_att_mult),
183 SOC_ENUM("ADC Overflow Flag Polarity", pcm3168a_adc_ov_pol),
184 SOC_SINGLE_RANGE_TLV("Master Capture Volume",
185 PCM3168A_ADC_VOL_MASTER, 0, 14, 255, 0,
186 pcm3168a_adc_tlv),
187 SOC_DOUBLE_R_RANGE_TLV("ADC1 Capture Volume",
188 PCM3168A_ADC_VOL_CHAN_START,
189 PCM3168A_ADC_VOL_CHAN_START + 1,
190 0, 14, 255, 0, pcm3168a_adc_tlv),
191 SOC_DOUBLE_R_RANGE_TLV("ADC2 Capture Volume",
192 PCM3168A_ADC_VOL_CHAN_START + 2,
193 PCM3168A_ADC_VOL_CHAN_START + 3,
194 0, 14, 255, 0, pcm3168a_adc_tlv),
195 SOC_DOUBLE_R_RANGE_TLV("ADC3 Capture Volume",
196 PCM3168A_ADC_VOL_CHAN_START + 4,
197 PCM3168A_ADC_VOL_CHAN_START + 5,
198 0, 14, 255, 0, pcm3168a_adc_tlv)
199 };
200
201 static const struct snd_soc_dapm_widget pcm3168a_dapm_widgets[] = {
202 SND_SOC_DAPM_DAC("DAC1", "Playback", PCM3168A_DAC_OP_FLT,
203 PCM3168A_DAC_OPEDA_SHIFT, 1),
204 SND_SOC_DAPM_DAC("DAC2", "Playback", PCM3168A_DAC_OP_FLT,
205 PCM3168A_DAC_OPEDA_SHIFT + 1, 1),
206 SND_SOC_DAPM_DAC("DAC3", "Playback", PCM3168A_DAC_OP_FLT,
207 PCM3168A_DAC_OPEDA_SHIFT + 2, 1),
208 SND_SOC_DAPM_DAC("DAC4", "Playback", PCM3168A_DAC_OP_FLT,
209 PCM3168A_DAC_OPEDA_SHIFT + 3, 1),
210
211 SND_SOC_DAPM_OUTPUT("AOUT1L"),
212 SND_SOC_DAPM_OUTPUT("AOUT1R"),
213 SND_SOC_DAPM_OUTPUT("AOUT2L"),
214 SND_SOC_DAPM_OUTPUT("AOUT2R"),
215 SND_SOC_DAPM_OUTPUT("AOUT3L"),
216 SND_SOC_DAPM_OUTPUT("AOUT3R"),
217 SND_SOC_DAPM_OUTPUT("AOUT4L"),
218 SND_SOC_DAPM_OUTPUT("AOUT4R"),
219
220 SND_SOC_DAPM_ADC("ADC1", "Capture", PCM3168A_ADC_PWR_HPFB,
221 PCM3168A_ADC_PSVAD_SHIFT, 1),
222 SND_SOC_DAPM_ADC("ADC2", "Capture", PCM3168A_ADC_PWR_HPFB,
223 PCM3168A_ADC_PSVAD_SHIFT + 1, 1),
224 SND_SOC_DAPM_ADC("ADC3", "Capture", PCM3168A_ADC_PWR_HPFB,
225 PCM3168A_ADC_PSVAD_SHIFT + 2, 1),
226
227 SND_SOC_DAPM_INPUT("AIN1L"),
228 SND_SOC_DAPM_INPUT("AIN1R"),
229 SND_SOC_DAPM_INPUT("AIN2L"),
230 SND_SOC_DAPM_INPUT("AIN2R"),
231 SND_SOC_DAPM_INPUT("AIN3L"),
232 SND_SOC_DAPM_INPUT("AIN3R")
233 };
234
235 static const struct snd_soc_dapm_route pcm3168a_dapm_routes[] = {
236 /* Playback */
237 { "AOUT1L", NULL, "DAC1" },
238 { "AOUT1R", NULL, "DAC1" },
239
240 { "AOUT2L", NULL, "DAC2" },
241 { "AOUT2R", NULL, "DAC2" },
242
243 { "AOUT3L", NULL, "DAC3" },
244 { "AOUT3R", NULL, "DAC3" },
245
246 { "AOUT4L", NULL, "DAC4" },
247 { "AOUT4R", NULL, "DAC4" },
248
249 /* Capture */
250 { "ADC1", NULL, "AIN1L" },
251 { "ADC1", NULL, "AIN1R" },
252
253 { "ADC2", NULL, "AIN2L" },
254 { "ADC2", NULL, "AIN2R" },
255
256 { "ADC3", NULL, "AIN3L" },
257 { "ADC3", NULL, "AIN3R" }
258 };
259
260 static unsigned int pcm3168a_scki_ratios[] = {
261 768,
262 512,
263 384,
264 256,
265 192,
266 128
267 };
268
269 #define PCM3168A_NUM_SCKI_RATIOS_DAC ARRAY_SIZE(pcm3168a_scki_ratios)
270 #define PCM3168A_NUM_SCKI_RATIOS_ADC (ARRAY_SIZE(pcm3168a_scki_ratios) - 2)
271
272 #define PCM3168A_MAX_SYSCLK 36864000
273
274 static int pcm3168a_reset(struct pcm3168a_priv *pcm3168a)
275 {
276 int ret;
277
278 ret = regmap_write(pcm3168a->regmap, PCM3168A_RST_SMODE, 0);
279 if (ret)
280 return ret;
281
282 /* Internal reset is de-asserted after 3846 SCKI cycles */
283 msleep(DIV_ROUND_UP(3846 * 1000, pcm3168a->sysclk));
284
285 return regmap_write(pcm3168a->regmap, PCM3168A_RST_SMODE,
286 PCM3168A_MRST_MASK | PCM3168A_SRST_MASK);
287 }
288
289 static int pcm3168a_digital_mute(struct snd_soc_dai *dai, int mute)
290 {
291 struct snd_soc_component *component = dai->component;
292 struct pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component);
293
294 regmap_write(pcm3168a->regmap, PCM3168A_DAC_MUTE, mute ? 0xff : 0);
295
296 return 0;
297 }
298
299 static int pcm3168a_set_dai_sysclk(struct snd_soc_dai *dai,
300 int clk_id, unsigned int freq, int dir)
301 {
302 struct pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(dai->component);
303 int ret;
304
305 if (freq > PCM3168A_MAX_SYSCLK)
306 return -EINVAL;
307
308 ret = clk_set_rate(pcm3168a->scki, freq);
309 if (ret)
310 return ret;
311
312 pcm3168a->sysclk = freq;
313
314 return 0;
315 }
316
317 static int pcm3168a_set_dai_fmt(struct snd_soc_dai *dai, unsigned int format)
318 {
319 struct snd_soc_component *component = dai->component;
320 struct pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component);
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(component->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(component->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 (dai->id == PCM3168A_DAI_DAC) {
365 reg = PCM3168A_DAC_PWR_MST_FMT;
366 mask = PCM3168A_DAC_FMT_MASK;
367 shift = PCM3168A_DAC_FMT_SHIFT;
368 } else {
369 reg = PCM3168A_ADC_MST_FMT;
370 mask = PCM3168A_ADC_FMTAD_MASK;
371 shift = PCM3168A_ADC_FMTAD_SHIFT;
372 }
373
374 pcm3168a->io_params[dai->id].master_mode = master_mode;
375 pcm3168a->io_params[dai->id].fmt = fmt;
376
377 regmap_update_bits(pcm3168a->regmap, reg, mask, fmt << shift);
378
379 return 0;
380 }
381
382 static int pcm3168a_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
383 unsigned int rx_mask, int slots,
384 int slot_width)
385 {
386 struct snd_soc_component *component = dai->component;
387 struct pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component);
388 struct pcm3168a_io_params *io_params = &pcm3168a->io_params[dai->id];
389
390 if (tx_mask >= (1<<slots) || rx_mask >= (1<<slots)) {
391 dev_err(component->dev,
392 "Bad tdm mask tx: 0x%08x rx: 0x%08x slots %d\n",
393 tx_mask, rx_mask, slots);
394 return -EINVAL;
395 }
396
397 if (slot_width &&
398 (slot_width != 16 && slot_width != 24 && slot_width != 32 )) {
399 dev_err(component->dev, "Unsupported slot_width %d\n",
400 slot_width);
401 return -EINVAL;
402 }
403
404 io_params->tdm_slots = slots;
405 io_params->slot_width = slot_width;
406 /* Ignore the not relevant mask for the DAI/direction */
407 if (dai->id == PCM3168A_DAI_DAC)
408 io_params->tdm_mask = tx_mask;
409 else
410 io_params->tdm_mask = rx_mask;
411
412 return 0;
413 }
414
415 static int pcm3168a_hw_params(struct snd_pcm_substream *substream,
416 struct snd_pcm_hw_params *params,
417 struct snd_soc_dai *dai)
418 {
419 struct snd_soc_component *component = dai->component;
420 struct pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component);
421 struct pcm3168a_io_params *io_params = &pcm3168a->io_params[dai->id];
422 bool master_mode;
423 u32 val, mask, shift, reg;
424 unsigned int rate, fmt, ratio, max_ratio;
425 unsigned int tdm_slots;
426 int i, slot_width;
427
428 rate = params_rate(params);
429
430 ratio = pcm3168a->sysclk / rate;
431
432 if (dai->id == PCM3168A_DAI_DAC) {
433 max_ratio = PCM3168A_NUM_SCKI_RATIOS_DAC;
434 reg = PCM3168A_DAC_PWR_MST_FMT;
435 mask = PCM3168A_DAC_MSDA_MASK;
436 shift = PCM3168A_DAC_MSDA_SHIFT;
437 } else {
438 max_ratio = PCM3168A_NUM_SCKI_RATIOS_ADC;
439 reg = PCM3168A_ADC_MST_FMT;
440 mask = PCM3168A_ADC_MSAD_MASK;
441 shift = PCM3168A_ADC_MSAD_SHIFT;
442 }
443
444 master_mode = io_params->master_mode;
445 fmt = io_params->fmt;
446
447 for (i = 0; i < max_ratio; i++) {
448 if (pcm3168a_scki_ratios[i] == ratio)
449 break;
450 }
451
452 if (i == max_ratio) {
453 dev_err(component->dev, "unsupported sysclk ratio\n");
454 return -EINVAL;
455 }
456
457 if (io_params->slot_width)
458 slot_width = io_params->slot_width;
459 else
460 slot_width = params_width(params);
461
462 switch (slot_width) {
463 case 16:
464 if (master_mode || (fmt != PCM3168A_FMT_RIGHT_J)) {
465 dev_err(component->dev, "16-bit slots are supported only for slave mode using right justified\n");
466 return -EINVAL;
467 }
468 fmt = PCM3168A_FMT_RIGHT_J_16;
469 break;
470 case 24:
471 if (master_mode || (fmt & PCM3168A_FMT_DSP_MASK)) {
472 dev_err(component->dev, "24-bit slots not supported in master mode, or slave mode using DSP\n");
473 return -EINVAL;
474 }
475 break;
476 case 32:
477 break;
478 default:
479 dev_err(component->dev, "unsupported frame size: %d\n", slot_width);
480 return -EINVAL;
481 }
482
483 if (io_params->tdm_slots)
484 tdm_slots = io_params->tdm_slots;
485 else
486 tdm_slots = params_channels(params);
487
488 /*
489 * Switch the codec to TDM mode when more than 2 TDM slots are needed
490 * for the stream.
491 * If pcm3168a->tdm_slots is not set or set to more than 2 (8/6 usually)
492 * then DIN1/DOUT1 is used in TDM mode.
493 * If pcm3168a->tdm_slots is set to 2 then DIN1/2/3/4 and DOUT1/2/3 is
494 * used in normal mode, no need to switch to TDM modes.
495 */
496 if (tdm_slots > 2) {
497 switch (fmt) {
498 case PCM3168A_FMT_I2S:
499 case PCM3168A_FMT_DSP_A:
500 fmt = PCM3168A_FMT_I2S_TDM;
501 break;
502 case PCM3168A_FMT_LEFT_J:
503 case PCM3168A_FMT_DSP_B:
504 fmt = PCM3168A_FMT_LEFT_J_TDM;
505 break;
506 default:
507 dev_err(component->dev,
508 "TDM is supported under DSP/I2S/Left_J only\n");
509 return -EINVAL;
510 }
511 }
512
513 if (master_mode)
514 val = ((i + 1) << shift);
515 else
516 val = 0;
517
518 regmap_update_bits(pcm3168a->regmap, reg, mask, val);
519
520 if (dai->id == PCM3168A_DAI_DAC) {
521 mask = PCM3168A_DAC_FMT_MASK;
522 shift = PCM3168A_DAC_FMT_SHIFT;
523 } else {
524 mask = PCM3168A_ADC_FMTAD_MASK;
525 shift = PCM3168A_ADC_FMTAD_SHIFT;
526 }
527
528 regmap_update_bits(pcm3168a->regmap, reg, mask, fmt << shift);
529
530 return 0;
531 }
532
533 static int pcm3168a_startup(struct snd_pcm_substream *substream,
534 struct snd_soc_dai *dai)
535 {
536 struct snd_soc_component *component = dai->component;
537 struct pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component);
538 unsigned int sample_min;
539 unsigned int channel_max;
540 unsigned int channel_maxs[] = {
541 8, /* DAC */
542 6 /* ADC */
543 };
544
545 /*
546 * Available Data Bits
547 *
548 * RIGHT_J : 24 / 16
549 * LEFT_J : 24
550 * I2S : 24
551 *
552 * TDM available
553 *
554 * I2S
555 * LEFT_J
556 */
557 switch (pcm3168a->io_params[dai->id].fmt) {
558 case PCM3168A_FMT_RIGHT_J:
559 sample_min = 16;
560 channel_max = 2;
561 break;
562 case PCM3168A_FMT_LEFT_J:
563 case PCM3168A_FMT_I2S:
564 case PCM3168A_FMT_DSP_A:
565 case PCM3168A_FMT_DSP_B:
566 sample_min = 24;
567 channel_max = channel_maxs[dai->id];
568 break;
569 default:
570 sample_min = 24;
571 channel_max = 2;
572 }
573
574 snd_pcm_hw_constraint_minmax(substream->runtime,
575 SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
576 sample_min, 32);
577
578 /* Allow all channels in multi DIN/DOUT mode */
579 if (pcm3168a->io_params[dai->id].tdm_slots == 2)
580 channel_max = channel_maxs[dai->id];
581
582 snd_pcm_hw_constraint_minmax(substream->runtime,
583 SNDRV_PCM_HW_PARAM_CHANNELS,
584 2, channel_max);
585
586 return 0;
587 }
588 static const struct snd_soc_dai_ops pcm3168a_dai_ops = {
589 .startup = pcm3168a_startup,
590 .set_fmt = pcm3168a_set_dai_fmt,
591 .set_sysclk = pcm3168a_set_dai_sysclk,
592 .hw_params = pcm3168a_hw_params,
593 .digital_mute = pcm3168a_digital_mute,
594 .set_tdm_slot = pcm3168a_set_tdm_slot,
595 };
596
597 static struct snd_soc_dai_driver pcm3168a_dais[] = {
598 {
599 .name = "pcm3168a-dac",
600 .id = PCM3168A_DAI_DAC,
601 .playback = {
602 .stream_name = "Playback",
603 .channels_min = 1,
604 .channels_max = 8,
605 .rates = SNDRV_PCM_RATE_8000_192000,
606 .formats = PCM3168A_FORMATS
607 },
608 .ops = &pcm3168a_dai_ops
609 },
610 {
611 .name = "pcm3168a-adc",
612 .id = PCM3168A_DAI_ADC,
613 .capture = {
614 .stream_name = "Capture",
615 .channels_min = 1,
616 .channels_max = 6,
617 .rates = SNDRV_PCM_RATE_8000_96000,
618 .formats = PCM3168A_FORMATS
619 },
620 .ops = &pcm3168a_dai_ops
621 },
622 };
623
624 static const struct reg_default pcm3168a_reg_default[] = {
625 { PCM3168A_RST_SMODE, PCM3168A_MRST_MASK | PCM3168A_SRST_MASK },
626 { PCM3168A_DAC_PWR_MST_FMT, 0x00 },
627 { PCM3168A_DAC_OP_FLT, 0x00 },
628 { PCM3168A_DAC_INV, 0x00 },
629 { PCM3168A_DAC_MUTE, 0x00 },
630 { PCM3168A_DAC_ZERO, 0x00 },
631 { PCM3168A_DAC_ATT_DEMP_ZF, 0x00 },
632 { PCM3168A_DAC_VOL_MASTER, 0xff },
633 { PCM3168A_DAC_VOL_CHAN_START, 0xff },
634 { PCM3168A_DAC_VOL_CHAN_START + 1, 0xff },
635 { PCM3168A_DAC_VOL_CHAN_START + 2, 0xff },
636 { PCM3168A_DAC_VOL_CHAN_START + 3, 0xff },
637 { PCM3168A_DAC_VOL_CHAN_START + 4, 0xff },
638 { PCM3168A_DAC_VOL_CHAN_START + 5, 0xff },
639 { PCM3168A_DAC_VOL_CHAN_START + 6, 0xff },
640 { PCM3168A_DAC_VOL_CHAN_START + 7, 0xff },
641 { PCM3168A_ADC_SMODE, 0x00 },
642 { PCM3168A_ADC_MST_FMT, 0x00 },
643 { PCM3168A_ADC_PWR_HPFB, 0x00 },
644 { PCM3168A_ADC_SEAD, 0x00 },
645 { PCM3168A_ADC_INV, 0x00 },
646 { PCM3168A_ADC_MUTE, 0x00 },
647 { PCM3168A_ADC_OV, 0x00 },
648 { PCM3168A_ADC_ATT_OVF, 0x00 },
649 { PCM3168A_ADC_VOL_MASTER, 0xd3 },
650 { PCM3168A_ADC_VOL_CHAN_START, 0xd3 },
651 { PCM3168A_ADC_VOL_CHAN_START + 1, 0xd3 },
652 { PCM3168A_ADC_VOL_CHAN_START + 2, 0xd3 },
653 { PCM3168A_ADC_VOL_CHAN_START + 3, 0xd3 },
654 { PCM3168A_ADC_VOL_CHAN_START + 4, 0xd3 },
655 { PCM3168A_ADC_VOL_CHAN_START + 5, 0xd3 }
656 };
657
658 static bool pcm3168a_readable_register(struct device *dev, unsigned int reg)
659 {
660 if (reg >= PCM3168A_RST_SMODE)
661 return true;
662 else
663 return false;
664 }
665
666 static bool pcm3168a_volatile_register(struct device *dev, unsigned int reg)
667 {
668 switch (reg) {
669 case PCM3168A_DAC_ZERO:
670 case PCM3168A_ADC_OV:
671 return true;
672 default:
673 return false;
674 }
675 }
676
677 static bool pcm3168a_writeable_register(struct device *dev, unsigned int reg)
678 {
679 if (reg < PCM3168A_RST_SMODE)
680 return false;
681
682 switch (reg) {
683 case PCM3168A_DAC_ZERO:
684 case PCM3168A_ADC_OV:
685 return false;
686 default:
687 return true;
688 }
689 }
690
691 const struct regmap_config pcm3168a_regmap = {
692 .reg_bits = 8,
693 .val_bits = 8,
694
695 .max_register = PCM3168A_ADC_VOL_CHAN_START + 5,
696 .reg_defaults = pcm3168a_reg_default,
697 .num_reg_defaults = ARRAY_SIZE(pcm3168a_reg_default),
698 .readable_reg = pcm3168a_readable_register,
699 .volatile_reg = pcm3168a_volatile_register,
700 .writeable_reg = pcm3168a_writeable_register,
701 .cache_type = REGCACHE_FLAT
702 };
703 EXPORT_SYMBOL_GPL(pcm3168a_regmap);
704
705 static const struct snd_soc_component_driver pcm3168a_driver = {
706 .controls = pcm3168a_snd_controls,
707 .num_controls = ARRAY_SIZE(pcm3168a_snd_controls),
708 .dapm_widgets = pcm3168a_dapm_widgets,
709 .num_dapm_widgets = ARRAY_SIZE(pcm3168a_dapm_widgets),
710 .dapm_routes = pcm3168a_dapm_routes,
711 .num_dapm_routes = ARRAY_SIZE(pcm3168a_dapm_routes),
712 .use_pmdown_time = 1,
713 .endianness = 1,
714 .non_legacy_dai_naming = 1,
715 };
716
717 int pcm3168a_probe(struct device *dev, struct regmap *regmap)
718 {
719 struct pcm3168a_priv *pcm3168a;
720 int ret, i;
721
722 pcm3168a = devm_kzalloc(dev, sizeof(*pcm3168a), GFP_KERNEL);
723 if (pcm3168a == NULL)
724 return -ENOMEM;
725
726 dev_set_drvdata(dev, pcm3168a);
727
728 pcm3168a->scki = devm_clk_get(dev, "scki");
729 if (IS_ERR(pcm3168a->scki)) {
730 ret = PTR_ERR(pcm3168a->scki);
731 if (ret != -EPROBE_DEFER)
732 dev_err(dev, "failed to acquire clock 'scki': %d\n", ret);
733 return ret;
734 }
735
736 ret = clk_prepare_enable(pcm3168a->scki);
737 if (ret) {
738 dev_err(dev, "Failed to enable mclk: %d\n", ret);
739 return ret;
740 }
741
742 pcm3168a->sysclk = clk_get_rate(pcm3168a->scki);
743
744 for (i = 0; i < ARRAY_SIZE(pcm3168a->supplies); i++)
745 pcm3168a->supplies[i].supply = pcm3168a_supply_names[i];
746
747 ret = devm_regulator_bulk_get(dev,
748 ARRAY_SIZE(pcm3168a->supplies), pcm3168a->supplies);
749 if (ret) {
750 if (ret != -EPROBE_DEFER)
751 dev_err(dev, "failed to request supplies: %d\n", ret);
752 goto err_clk;
753 }
754
755 ret = regulator_bulk_enable(ARRAY_SIZE(pcm3168a->supplies),
756 pcm3168a->supplies);
757 if (ret) {
758 dev_err(dev, "failed to enable supplies: %d\n", ret);
759 goto err_clk;
760 }
761
762 pcm3168a->regmap = regmap;
763 if (IS_ERR(pcm3168a->regmap)) {
764 ret = PTR_ERR(pcm3168a->regmap);
765 dev_err(dev, "failed to allocate regmap: %d\n", ret);
766 goto err_regulator;
767 }
768
769 ret = pcm3168a_reset(pcm3168a);
770 if (ret) {
771 dev_err(dev, "Failed to reset device: %d\n", ret);
772 goto err_regulator;
773 }
774
775 pm_runtime_set_active(dev);
776 pm_runtime_enable(dev);
777 pm_runtime_idle(dev);
778
779 ret = devm_snd_soc_register_component(dev, &pcm3168a_driver, pcm3168a_dais,
780 ARRAY_SIZE(pcm3168a_dais));
781 if (ret) {
782 dev_err(dev, "failed to register component: %d\n", ret);
783 goto err_regulator;
784 }
785
786 return 0;
787
788 err_regulator:
789 regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
790 pcm3168a->supplies);
791 err_clk:
792 clk_disable_unprepare(pcm3168a->scki);
793
794 return ret;
795 }
796 EXPORT_SYMBOL_GPL(pcm3168a_probe);
797
798 static void pcm3168a_disable(struct device *dev)
799 {
800 struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
801
802 regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
803 pcm3168a->supplies);
804 clk_disable_unprepare(pcm3168a->scki);
805 }
806
807 void pcm3168a_remove(struct device *dev)
808 {
809 pm_runtime_disable(dev);
810 #ifndef CONFIG_PM
811 pcm3168a_disable(dev);
812 #endif
813 }
814 EXPORT_SYMBOL_GPL(pcm3168a_remove);
815
816 #ifdef CONFIG_PM
817 static int pcm3168a_rt_resume(struct device *dev)
818 {
819 struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
820 int ret;
821
822 ret = clk_prepare_enable(pcm3168a->scki);
823 if (ret) {
824 dev_err(dev, "Failed to enable mclk: %d\n", ret);
825 return ret;
826 }
827
828 ret = regulator_bulk_enable(ARRAY_SIZE(pcm3168a->supplies),
829 pcm3168a->supplies);
830 if (ret) {
831 dev_err(dev, "Failed to enable supplies: %d\n", ret);
832 goto err_clk;
833 }
834
835 ret = pcm3168a_reset(pcm3168a);
836 if (ret) {
837 dev_err(dev, "Failed to reset device: %d\n", ret);
838 goto err_regulator;
839 }
840
841 regcache_cache_only(pcm3168a->regmap, false);
842
843 regcache_mark_dirty(pcm3168a->regmap);
844
845 ret = regcache_sync(pcm3168a->regmap);
846 if (ret) {
847 dev_err(dev, "Failed to sync regmap: %d\n", ret);
848 goto err_regulator;
849 }
850
851 return 0;
852
853 err_regulator:
854 regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
855 pcm3168a->supplies);
856 err_clk:
857 clk_disable_unprepare(pcm3168a->scki);
858
859 return ret;
860 }
861
862 static int pcm3168a_rt_suspend(struct device *dev)
863 {
864 struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
865
866 regcache_cache_only(pcm3168a->regmap, true);
867
868 pcm3168a_disable(dev);
869
870 return 0;
871 }
872 #endif
873
874 const struct dev_pm_ops pcm3168a_pm_ops = {
875 SET_RUNTIME_PM_OPS(pcm3168a_rt_suspend, pcm3168a_rt_resume, NULL)
876 };
877 EXPORT_SYMBOL_GPL(pcm3168a_pm_ops);
878
879 MODULE_DESCRIPTION("PCM3168A codec driver");
880 MODULE_AUTHOR("Damien Horsley <Damien.Horsley@imgtec.com>");
881 MODULE_LICENSE("GPL v2");
Linux with added FPC-III support