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10#include <linux/init.h>
11#include <linux/module.h>
12#include <linux/clk.h>
13#include <linux/kernel.h>
14#include <linux/pm_runtime.h>
15#include <linux/regmap.h>
16#include <linux/regulator/consumer.h>
17#include <linux/gcd.h>
18#include <sound/soc.h>
19#include <sound/soc-dapm.h>
20#include <sound/pcm_params.h>
21#include <sound/tlv.h>
22
23#include "pcm512x.h"
24
25#define PCM512x_NUM_SUPPLIES 3
26static const char * const pcm512x_supply_names[PCM512x_NUM_SUPPLIES] = {
27 "AVDD",
28 "DVDD",
29 "CPVDD",
30};
31
32struct pcm512x_priv {
33 struct regmap *regmap;
34 struct clk *sclk;
35 struct regulator_bulk_data supplies[PCM512x_NUM_SUPPLIES];
36 struct notifier_block supply_nb[PCM512x_NUM_SUPPLIES];
37 int fmt;
38 int pll_in;
39 int pll_out;
40 int pll_r;
41 int pll_j;
42 int pll_d;
43 int pll_p;
44 unsigned long real_pll;
45 unsigned long overclock_pll;
46 unsigned long overclock_dac;
47 unsigned long overclock_dsp;
48 int mute;
49 struct mutex mutex;
50 unsigned int bclk_ratio;
51};
52
53
54
55
56
57
58#define PCM512x_REGULATOR_EVENT(n) \
59static int pcm512x_regulator_event_##n(struct notifier_block *nb, \
60 unsigned long event, void *data) \
61{ \
62 struct pcm512x_priv *pcm512x = container_of(nb, struct pcm512x_priv, \
63 supply_nb[n]); \
64 if (event & REGULATOR_EVENT_DISABLE) { \
65 regcache_mark_dirty(pcm512x->regmap); \
66 regcache_cache_only(pcm512x->regmap, true); \
67 } \
68 return 0; \
69}
70
71PCM512x_REGULATOR_EVENT(0)
72PCM512x_REGULATOR_EVENT(1)
73PCM512x_REGULATOR_EVENT(2)
74
75static const struct reg_default pcm512x_reg_defaults[] = {
76 { PCM512x_RESET, 0x00 },
77 { PCM512x_POWER, 0x00 },
78 { PCM512x_MUTE, 0x00 },
79 { PCM512x_DSP, 0x00 },
80 { PCM512x_PLL_REF, 0x00 },
81 { PCM512x_DAC_REF, 0x00 },
82 { PCM512x_DAC_ROUTING, 0x11 },
83 { PCM512x_DSP_PROGRAM, 0x01 },
84 { PCM512x_CLKDET, 0x00 },
85 { PCM512x_AUTO_MUTE, 0x00 },
86 { PCM512x_ERROR_DETECT, 0x00 },
87 { PCM512x_DIGITAL_VOLUME_1, 0x00 },
88 { PCM512x_DIGITAL_VOLUME_2, 0x30 },
89 { PCM512x_DIGITAL_VOLUME_3, 0x30 },
90 { PCM512x_DIGITAL_MUTE_1, 0x22 },
91 { PCM512x_DIGITAL_MUTE_2, 0x00 },
92 { PCM512x_DIGITAL_MUTE_3, 0x07 },
93 { PCM512x_OUTPUT_AMPLITUDE, 0x00 },
94 { PCM512x_ANALOG_GAIN_CTRL, 0x00 },
95 { PCM512x_UNDERVOLTAGE_PROT, 0x00 },
96 { PCM512x_ANALOG_MUTE_CTRL, 0x00 },
97 { PCM512x_ANALOG_GAIN_BOOST, 0x00 },
98 { PCM512x_VCOM_CTRL_1, 0x00 },
99 { PCM512x_VCOM_CTRL_2, 0x01 },
100 { PCM512x_BCLK_LRCLK_CFG, 0x00 },
101 { PCM512x_MASTER_MODE, 0x7c },
102 { PCM512x_GPIO_DACIN, 0x00 },
103 { PCM512x_GPIO_PLLIN, 0x00 },
104 { PCM512x_SYNCHRONIZE, 0x10 },
105 { PCM512x_PLL_COEFF_0, 0x00 },
106 { PCM512x_PLL_COEFF_1, 0x00 },
107 { PCM512x_PLL_COEFF_2, 0x00 },
108 { PCM512x_PLL_COEFF_3, 0x00 },
109 { PCM512x_PLL_COEFF_4, 0x00 },
110 { PCM512x_DSP_CLKDIV, 0x00 },
111 { PCM512x_DAC_CLKDIV, 0x00 },
112 { PCM512x_NCP_CLKDIV, 0x00 },
113 { PCM512x_OSR_CLKDIV, 0x00 },
114 { PCM512x_MASTER_CLKDIV_1, 0x00 },
115 { PCM512x_MASTER_CLKDIV_2, 0x00 },
116 { PCM512x_FS_SPEED_MODE, 0x00 },
117 { PCM512x_IDAC_1, 0x01 },
118 { PCM512x_IDAC_2, 0x00 },
119 { PCM512x_I2S_1, 0x02 },
120 { PCM512x_I2S_2, 0x00 },
121};
122
123static bool pcm512x_readable(struct device *dev, unsigned int reg)
124{
125 switch (reg) {
126 case PCM512x_RESET:
127 case PCM512x_POWER:
128 case PCM512x_MUTE:
129 case PCM512x_PLL_EN:
130 case PCM512x_SPI_MISO_FUNCTION:
131 case PCM512x_DSP:
132 case PCM512x_GPIO_EN:
133 case PCM512x_BCLK_LRCLK_CFG:
134 case PCM512x_DSP_GPIO_INPUT:
135 case PCM512x_MASTER_MODE:
136 case PCM512x_PLL_REF:
137 case PCM512x_DAC_REF:
138 case PCM512x_GPIO_DACIN:
139 case PCM512x_GPIO_PLLIN:
140 case PCM512x_SYNCHRONIZE:
141 case PCM512x_PLL_COEFF_0:
142 case PCM512x_PLL_COEFF_1:
143 case PCM512x_PLL_COEFF_2:
144 case PCM512x_PLL_COEFF_3:
145 case PCM512x_PLL_COEFF_4:
146 case PCM512x_DSP_CLKDIV:
147 case PCM512x_DAC_CLKDIV:
148 case PCM512x_NCP_CLKDIV:
149 case PCM512x_OSR_CLKDIV:
150 case PCM512x_MASTER_CLKDIV_1:
151 case PCM512x_MASTER_CLKDIV_2:
152 case PCM512x_FS_SPEED_MODE:
153 case PCM512x_IDAC_1:
154 case PCM512x_IDAC_2:
155 case PCM512x_ERROR_DETECT:
156 case PCM512x_I2S_1:
157 case PCM512x_I2S_2:
158 case PCM512x_DAC_ROUTING:
159 case PCM512x_DSP_PROGRAM:
160 case PCM512x_CLKDET:
161 case PCM512x_AUTO_MUTE:
162 case PCM512x_DIGITAL_VOLUME_1:
163 case PCM512x_DIGITAL_VOLUME_2:
164 case PCM512x_DIGITAL_VOLUME_3:
165 case PCM512x_DIGITAL_MUTE_1:
166 case PCM512x_DIGITAL_MUTE_2:
167 case PCM512x_DIGITAL_MUTE_3:
168 case PCM512x_GPIO_OUTPUT_1:
169 case PCM512x_GPIO_OUTPUT_2:
170 case PCM512x_GPIO_OUTPUT_3:
171 case PCM512x_GPIO_OUTPUT_4:
172 case PCM512x_GPIO_OUTPUT_5:
173 case PCM512x_GPIO_OUTPUT_6:
174 case PCM512x_GPIO_CONTROL_1:
175 case PCM512x_GPIO_CONTROL_2:
176 case PCM512x_OVERFLOW:
177 case PCM512x_RATE_DET_1:
178 case PCM512x_RATE_DET_2:
179 case PCM512x_RATE_DET_3:
180 case PCM512x_RATE_DET_4:
181 case PCM512x_CLOCK_STATUS:
182 case PCM512x_ANALOG_MUTE_DET:
183 case PCM512x_GPIN:
184 case PCM512x_DIGITAL_MUTE_DET:
185 case PCM512x_OUTPUT_AMPLITUDE:
186 case PCM512x_ANALOG_GAIN_CTRL:
187 case PCM512x_UNDERVOLTAGE_PROT:
188 case PCM512x_ANALOG_MUTE_CTRL:
189 case PCM512x_ANALOG_GAIN_BOOST:
190 case PCM512x_VCOM_CTRL_1:
191 case PCM512x_VCOM_CTRL_2:
192 case PCM512x_CRAM_CTRL:
193 case PCM512x_FLEX_A:
194 case PCM512x_FLEX_B:
195 return true;
196 default:
197
198 return reg < 0xff;
199 }
200}
201
202static bool pcm512x_volatile(struct device *dev, unsigned int reg)
203{
204 switch (reg) {
205 case PCM512x_PLL_EN:
206 case PCM512x_OVERFLOW:
207 case PCM512x_RATE_DET_1:
208 case PCM512x_RATE_DET_2:
209 case PCM512x_RATE_DET_3:
210 case PCM512x_RATE_DET_4:
211 case PCM512x_CLOCK_STATUS:
212 case PCM512x_ANALOG_MUTE_DET:
213 case PCM512x_GPIN:
214 case PCM512x_DIGITAL_MUTE_DET:
215 case PCM512x_CRAM_CTRL:
216 return true;
217 default:
218
219 return reg < 0xff;
220 }
221}
222
223static int pcm512x_overclock_pll_get(struct snd_kcontrol *kcontrol,
224 struct snd_ctl_elem_value *ucontrol)
225{
226 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
227 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
228
229 ucontrol->value.integer.value[0] = pcm512x->overclock_pll;
230 return 0;
231}
232
233static int pcm512x_overclock_pll_put(struct snd_kcontrol *kcontrol,
234 struct snd_ctl_elem_value *ucontrol)
235{
236 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
237 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
238
239 switch (snd_soc_component_get_bias_level(component)) {
240 case SND_SOC_BIAS_OFF:
241 case SND_SOC_BIAS_STANDBY:
242 break;
243 default:
244 return -EBUSY;
245 }
246
247 pcm512x->overclock_pll = ucontrol->value.integer.value[0];
248 return 0;
249}
250
251static int pcm512x_overclock_dsp_get(struct snd_kcontrol *kcontrol,
252 struct snd_ctl_elem_value *ucontrol)
253{
254 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
255 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
256
257 ucontrol->value.integer.value[0] = pcm512x->overclock_dsp;
258 return 0;
259}
260
261static int pcm512x_overclock_dsp_put(struct snd_kcontrol *kcontrol,
262 struct snd_ctl_elem_value *ucontrol)
263{
264 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
265 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
266
267 switch (snd_soc_component_get_bias_level(component)) {
268 case SND_SOC_BIAS_OFF:
269 case SND_SOC_BIAS_STANDBY:
270 break;
271 default:
272 return -EBUSY;
273 }
274
275 pcm512x->overclock_dsp = ucontrol->value.integer.value[0];
276 return 0;
277}
278
279static int pcm512x_overclock_dac_get(struct snd_kcontrol *kcontrol,
280 struct snd_ctl_elem_value *ucontrol)
281{
282 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
283 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
284
285 ucontrol->value.integer.value[0] = pcm512x->overclock_dac;
286 return 0;
287}
288
289static int pcm512x_overclock_dac_put(struct snd_kcontrol *kcontrol,
290 struct snd_ctl_elem_value *ucontrol)
291{
292 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
293 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
294
295 switch (snd_soc_component_get_bias_level(component)) {
296 case SND_SOC_BIAS_OFF:
297 case SND_SOC_BIAS_STANDBY:
298 break;
299 default:
300 return -EBUSY;
301 }
302
303 pcm512x->overclock_dac = ucontrol->value.integer.value[0];
304 return 0;
305}
306
307static const DECLARE_TLV_DB_SCALE(digital_tlv, -10350, 50, 1);
308static const DECLARE_TLV_DB_SCALE(analog_tlv, -600, 600, 0);
309static const DECLARE_TLV_DB_SCALE(boost_tlv, 0, 80, 0);
310
311static const char * const pcm512x_dsp_program_texts[] = {
312 "FIR interpolation with de-emphasis",
313 "Low latency IIR with de-emphasis",
314 "High attenuation with de-emphasis",
315 "Fixed process flow",
316 "Ringing-less low latency FIR",
317};
318
319static const unsigned int pcm512x_dsp_program_values[] = {
320 1,
321 2,
322 3,
323 5,
324 7,
325};
326
327static SOC_VALUE_ENUM_SINGLE_DECL(pcm512x_dsp_program,
328 PCM512x_DSP_PROGRAM, 0, 0x1f,
329 pcm512x_dsp_program_texts,
330 pcm512x_dsp_program_values);
331
332static const char * const pcm512x_clk_missing_text[] = {
333 "1s", "2s", "3s", "4s", "5s", "6s", "7s", "8s"
334};
335
336static const struct soc_enum pcm512x_clk_missing =
337 SOC_ENUM_SINGLE(PCM512x_CLKDET, 0, 8, pcm512x_clk_missing_text);
338
339static const char * const pcm512x_autom_text[] = {
340 "21ms", "106ms", "213ms", "533ms", "1.07s", "2.13s", "5.33s", "10.66s"
341};
342
343static const struct soc_enum pcm512x_autom_l =
344 SOC_ENUM_SINGLE(PCM512x_AUTO_MUTE, PCM512x_ATML_SHIFT, 8,
345 pcm512x_autom_text);
346
347static const struct soc_enum pcm512x_autom_r =
348 SOC_ENUM_SINGLE(PCM512x_AUTO_MUTE, PCM512x_ATMR_SHIFT, 8,
349 pcm512x_autom_text);
350
351static const char * const pcm512x_ramp_rate_text[] = {
352 "1 sample/update", "2 samples/update", "4 samples/update",
353 "Immediate"
354};
355
356static const struct soc_enum pcm512x_vndf =
357 SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_1, PCM512x_VNDF_SHIFT, 4,
358 pcm512x_ramp_rate_text);
359
360static const struct soc_enum pcm512x_vnuf =
361 SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_1, PCM512x_VNUF_SHIFT, 4,
362 pcm512x_ramp_rate_text);
363
364static const struct soc_enum pcm512x_vedf =
365 SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_2, PCM512x_VEDF_SHIFT, 4,
366 pcm512x_ramp_rate_text);
367
368static const char * const pcm512x_ramp_step_text[] = {
369 "4dB/step", "2dB/step", "1dB/step", "0.5dB/step"
370};
371
372static const struct soc_enum pcm512x_vnds =
373 SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_1, PCM512x_VNDS_SHIFT, 4,
374 pcm512x_ramp_step_text);
375
376static const struct soc_enum pcm512x_vnus =
377 SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_1, PCM512x_VNUS_SHIFT, 4,
378 pcm512x_ramp_step_text);
379
380static const struct soc_enum pcm512x_veds =
381 SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_2, PCM512x_VEDS_SHIFT, 4,
382 pcm512x_ramp_step_text);
383
384static int pcm512x_update_mute(struct pcm512x_priv *pcm512x)
385{
386 return regmap_update_bits(
387 pcm512x->regmap, PCM512x_MUTE, PCM512x_RQML | PCM512x_RQMR,
388 (!!(pcm512x->mute & 0x5) << PCM512x_RQML_SHIFT)
389 | (!!(pcm512x->mute & 0x3) << PCM512x_RQMR_SHIFT));
390}
391
392static int pcm512x_digital_playback_switch_get(struct snd_kcontrol *kcontrol,
393 struct snd_ctl_elem_value *ucontrol)
394{
395 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
396 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
397
398 mutex_lock(&pcm512x->mutex);
399 ucontrol->value.integer.value[0] = !(pcm512x->mute & 0x4);
400 ucontrol->value.integer.value[1] = !(pcm512x->mute & 0x2);
401 mutex_unlock(&pcm512x->mutex);
402
403 return 0;
404}
405
406static int pcm512x_digital_playback_switch_put(struct snd_kcontrol *kcontrol,
407 struct snd_ctl_elem_value *ucontrol)
408{
409 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
410 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
411 int ret, changed = 0;
412
413 mutex_lock(&pcm512x->mutex);
414
415 if ((pcm512x->mute & 0x4) == (ucontrol->value.integer.value[0] << 2)) {
416 pcm512x->mute ^= 0x4;
417 changed = 1;
418 }
419 if ((pcm512x->mute & 0x2) == (ucontrol->value.integer.value[1] << 1)) {
420 pcm512x->mute ^= 0x2;
421 changed = 1;
422 }
423
424 if (changed) {
425 ret = pcm512x_update_mute(pcm512x);
426 if (ret != 0) {
427 dev_err(component->dev,
428 "Failed to update digital mute: %d\n", ret);
429 mutex_unlock(&pcm512x->mutex);
430 return ret;
431 }
432 }
433
434 mutex_unlock(&pcm512x->mutex);
435
436 return changed;
437}
438
439static const struct snd_kcontrol_new pcm512x_controls[] = {
440SOC_DOUBLE_R_TLV("Digital Playback Volume", PCM512x_DIGITAL_VOLUME_2,
441 PCM512x_DIGITAL_VOLUME_3, 0, 255, 1, digital_tlv),
442SOC_DOUBLE_TLV("Analogue Playback Volume", PCM512x_ANALOG_GAIN_CTRL,
443 PCM512x_LAGN_SHIFT, PCM512x_RAGN_SHIFT, 1, 1, analog_tlv),
444SOC_DOUBLE_TLV("Analogue Playback Boost Volume", PCM512x_ANALOG_GAIN_BOOST,
445 PCM512x_AGBL_SHIFT, PCM512x_AGBR_SHIFT, 1, 0, boost_tlv),
446{
447 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
448 .name = "Digital Playback Switch",
449 .index = 0,
450 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
451 .info = snd_ctl_boolean_stereo_info,
452 .get = pcm512x_digital_playback_switch_get,
453 .put = pcm512x_digital_playback_switch_put
454},
455
456SOC_SINGLE("Deemphasis Switch", PCM512x_DSP, PCM512x_DEMP_SHIFT, 1, 1),
457SOC_ENUM("DSP Program", pcm512x_dsp_program),
458
459SOC_ENUM("Clock Missing Period", pcm512x_clk_missing),
460SOC_ENUM("Auto Mute Time Left", pcm512x_autom_l),
461SOC_ENUM("Auto Mute Time Right", pcm512x_autom_r),
462SOC_SINGLE("Auto Mute Mono Switch", PCM512x_DIGITAL_MUTE_3,
463 PCM512x_ACTL_SHIFT, 1, 0),
464SOC_DOUBLE("Auto Mute Switch", PCM512x_DIGITAL_MUTE_3, PCM512x_AMLE_SHIFT,
465 PCM512x_AMRE_SHIFT, 1, 0),
466
467SOC_ENUM("Volume Ramp Down Rate", pcm512x_vndf),
468SOC_ENUM("Volume Ramp Down Step", pcm512x_vnds),
469SOC_ENUM("Volume Ramp Up Rate", pcm512x_vnuf),
470SOC_ENUM("Volume Ramp Up Step", pcm512x_vnus),
471SOC_ENUM("Volume Ramp Down Emergency Rate", pcm512x_vedf),
472SOC_ENUM("Volume Ramp Down Emergency Step", pcm512x_veds),
473
474SOC_SINGLE_EXT("Max Overclock PLL", SND_SOC_NOPM, 0, 20, 0,
475 pcm512x_overclock_pll_get, pcm512x_overclock_pll_put),
476SOC_SINGLE_EXT("Max Overclock DSP", SND_SOC_NOPM, 0, 40, 0,
477 pcm512x_overclock_dsp_get, pcm512x_overclock_dsp_put),
478SOC_SINGLE_EXT("Max Overclock DAC", SND_SOC_NOPM, 0, 40, 0,
479 pcm512x_overclock_dac_get, pcm512x_overclock_dac_put),
480};
481
482static const struct snd_soc_dapm_widget pcm512x_dapm_widgets[] = {
483SND_SOC_DAPM_DAC("DACL", NULL, SND_SOC_NOPM, 0, 0),
484SND_SOC_DAPM_DAC("DACR", NULL, SND_SOC_NOPM, 0, 0),
485
486SND_SOC_DAPM_OUTPUT("OUTL"),
487SND_SOC_DAPM_OUTPUT("OUTR"),
488};
489
490static const struct snd_soc_dapm_route pcm512x_dapm_routes[] = {
491 { "DACL", NULL, "Playback" },
492 { "DACR", NULL, "Playback" },
493
494 { "OUTL", NULL, "DACL" },
495 { "OUTR", NULL, "DACR" },
496};
497
498static unsigned long pcm512x_pll_max(struct pcm512x_priv *pcm512x)
499{
500 return 25000000 + 25000000 * pcm512x->overclock_pll / 100;
501}
502
503static unsigned long pcm512x_dsp_max(struct pcm512x_priv *pcm512x)
504{
505 return 50000000 + 50000000 * pcm512x->overclock_dsp / 100;
506}
507
508static unsigned long pcm512x_dac_max(struct pcm512x_priv *pcm512x,
509 unsigned long rate)
510{
511 return rate + rate * pcm512x->overclock_dac / 100;
512}
513
514static unsigned long pcm512x_sck_max(struct pcm512x_priv *pcm512x)
515{
516 if (!pcm512x->pll_out)
517 return 25000000;
518 return pcm512x_pll_max(pcm512x);
519}
520
521static unsigned long pcm512x_ncp_target(struct pcm512x_priv *pcm512x,
522 unsigned long dac_rate)
523{
524
525
526
527
528 if (dac_rate <= 6144000)
529 return 1536000;
530
531
532
533
534 return pcm512x_dac_max(pcm512x, 1536000);
535}
536
537static const u32 pcm512x_dai_rates[] = {
538 8000, 11025, 16000, 22050, 32000, 44100, 48000, 64000,
539 88200, 96000, 176400, 192000, 384000,
540};
541
542static const struct snd_pcm_hw_constraint_list constraints_slave = {
543 .count = ARRAY_SIZE(pcm512x_dai_rates),
544 .list = pcm512x_dai_rates,
545};
546
547static int pcm512x_hw_rule_rate(struct snd_pcm_hw_params *params,
548 struct snd_pcm_hw_rule *rule)
549{
550 struct pcm512x_priv *pcm512x = rule->private;
551 struct snd_interval ranges[2];
552 int frame_size;
553
554 frame_size = snd_soc_params_to_frame_size(params);
555 if (frame_size < 0)
556 return frame_size;
557
558 switch (frame_size) {
559 case 32:
560
561 return 0;
562 case 48:
563 case 64:
564
565
566
567 memset(ranges, 0, sizeof(ranges));
568 ranges[0].min = 8000;
569 ranges[0].max = pcm512x_sck_max(pcm512x) / frame_size / 2;
570 ranges[1].min = DIV_ROUND_UP(16000000, frame_size);
571 ranges[1].max = 384000;
572 break;
573 default:
574 return -EINVAL;
575 }
576
577 return snd_interval_ranges(hw_param_interval(params, rule->var),
578 ARRAY_SIZE(ranges), ranges, 0);
579}
580
581static int pcm512x_dai_startup_master(struct snd_pcm_substream *substream,
582 struct snd_soc_dai *dai)
583{
584 struct snd_soc_component *component = dai->component;
585 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
586 struct device *dev = dai->dev;
587 struct snd_pcm_hw_constraint_ratnums *constraints_no_pll;
588 struct snd_ratnum *rats_no_pll;
589
590 if (IS_ERR(pcm512x->sclk)) {
591 dev_err(dev, "Need SCLK for master mode: %ld\n",
592 PTR_ERR(pcm512x->sclk));
593 return PTR_ERR(pcm512x->sclk);
594 }
595
596 if (pcm512x->pll_out)
597 return snd_pcm_hw_rule_add(substream->runtime, 0,
598 SNDRV_PCM_HW_PARAM_RATE,
599 pcm512x_hw_rule_rate,
600 pcm512x,
601 SNDRV_PCM_HW_PARAM_FRAME_BITS,
602 SNDRV_PCM_HW_PARAM_CHANNELS, -1);
603
604 constraints_no_pll = devm_kzalloc(dev, sizeof(*constraints_no_pll),
605 GFP_KERNEL);
606 if (!constraints_no_pll)
607 return -ENOMEM;
608 constraints_no_pll->nrats = 1;
609 rats_no_pll = devm_kzalloc(dev, sizeof(*rats_no_pll), GFP_KERNEL);
610 if (!rats_no_pll)
611 return -ENOMEM;
612 constraints_no_pll->rats = rats_no_pll;
613 rats_no_pll->num = clk_get_rate(pcm512x->sclk) / 64;
614 rats_no_pll->den_min = 1;
615 rats_no_pll->den_max = 128;
616 rats_no_pll->den_step = 1;
617
618 return snd_pcm_hw_constraint_ratnums(substream->runtime, 0,
619 SNDRV_PCM_HW_PARAM_RATE,
620 constraints_no_pll);
621}
622
623static int pcm512x_dai_startup_slave(struct snd_pcm_substream *substream,
624 struct snd_soc_dai *dai)
625{
626 struct snd_soc_component *component = dai->component;
627 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
628 struct device *dev = dai->dev;
629 struct regmap *regmap = pcm512x->regmap;
630
631 if (IS_ERR(pcm512x->sclk)) {
632 dev_info(dev, "No SCLK, using BCLK: %ld\n",
633 PTR_ERR(pcm512x->sclk));
634
635
636 regmap_update_bits(regmap, PCM512x_ERROR_DETECT,
637 PCM512x_IDCH, PCM512x_IDCH);
638
639
640 regmap_update_bits(regmap, PCM512x_PLL_REF,
641 PCM512x_SREF, PCM512x_SREF_BCK);
642 }
643
644 return snd_pcm_hw_constraint_list(substream->runtime, 0,
645 SNDRV_PCM_HW_PARAM_RATE,
646 &constraints_slave);
647}
648
649static int pcm512x_dai_startup(struct snd_pcm_substream *substream,
650 struct snd_soc_dai *dai)
651{
652 struct snd_soc_component *component = dai->component;
653 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
654
655 switch (pcm512x->fmt & SND_SOC_DAIFMT_MASTER_MASK) {
656 case SND_SOC_DAIFMT_CBM_CFM:
657 case SND_SOC_DAIFMT_CBM_CFS:
658 return pcm512x_dai_startup_master(substream, dai);
659
660 case SND_SOC_DAIFMT_CBS_CFS:
661 return pcm512x_dai_startup_slave(substream, dai);
662
663 default:
664 return -EINVAL;
665 }
666}
667
668static int pcm512x_set_bias_level(struct snd_soc_component *component,
669 enum snd_soc_bias_level level)
670{
671 struct pcm512x_priv *pcm512x = dev_get_drvdata(component->dev);
672 int ret;
673
674 switch (level) {
675 case SND_SOC_BIAS_ON:
676 case SND_SOC_BIAS_PREPARE:
677 break;
678
679 case SND_SOC_BIAS_STANDBY:
680 ret = regmap_update_bits(pcm512x->regmap, PCM512x_POWER,
681 PCM512x_RQST, 0);
682 if (ret != 0) {
683 dev_err(component->dev, "Failed to remove standby: %d\n",
684 ret);
685 return ret;
686 }
687 break;
688
689 case SND_SOC_BIAS_OFF:
690 ret = regmap_update_bits(pcm512x->regmap, PCM512x_POWER,
691 PCM512x_RQST, PCM512x_RQST);
692 if (ret != 0) {
693 dev_err(component->dev, "Failed to request standby: %d\n",
694 ret);
695 return ret;
696 }
697 break;
698 }
699
700 return 0;
701}
702
703static unsigned long pcm512x_find_sck(struct snd_soc_dai *dai,
704 unsigned long bclk_rate)
705{
706 struct device *dev = dai->dev;
707 struct snd_soc_component *component = dai->component;
708 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
709 unsigned long sck_rate;
710 int pow2;
711
712
713
714
715
716
717
718
719 pow2 = 1 << fls((pcm512x_pll_max(pcm512x) - 16000000) / bclk_rate);
720 for (; pow2; pow2 >>= 1) {
721 sck_rate = rounddown(pcm512x_pll_max(pcm512x),
722 bclk_rate * pow2);
723 if (sck_rate >= 16000000)
724 break;
725 }
726 if (!pow2) {
727 dev_err(dev, "Impossible to generate a suitable SCK\n");
728 return 0;
729 }
730
731 dev_dbg(dev, "sck_rate %lu\n", sck_rate);
732 return sck_rate;
733}
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748static int pcm512x_find_pll_coeff(struct snd_soc_dai *dai,
749 unsigned long pllin_rate,
750 unsigned long pll_rate)
751{
752 struct device *dev = dai->dev;
753 struct snd_soc_component *component = dai->component;
754 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
755 unsigned long common;
756 int R, J, D, P;
757 unsigned long K;
758 unsigned long num;
759 unsigned long den;
760
761 common = gcd(pll_rate, pllin_rate);
762 dev_dbg(dev, "pll %lu pllin %lu common %lu\n",
763 pll_rate, pllin_rate, common);
764 num = pll_rate / common;
765 den = pllin_rate / common;
766
767
768 if (pllin_rate / den > 20000000 && num < 8) {
769 num *= DIV_ROUND_UP(pllin_rate / den, 20000000);
770 den *= DIV_ROUND_UP(pllin_rate / den, 20000000);
771 }
772 dev_dbg(dev, "num / den = %lu / %lu\n", num, den);
773
774 P = den;
775 if (den <= 15 && num <= 16 * 63
776 && 1000000 <= pllin_rate / P && pllin_rate / P <= 20000000) {
777
778 D = 0;
779
780 for (R = 16; R; R--) {
781 if (num % R)
782 continue;
783 J = num / R;
784 if (J == 0 || J > 63)
785 continue;
786
787 dev_dbg(dev, "R * J / P = %d * %d / %d\n", R, J, P);
788 pcm512x->real_pll = pll_rate;
789 goto done;
790 }
791
792 }
793
794 R = 1;
795
796 if (num > 0xffffffffUL / 10000)
797 goto fallback;
798
799
800 common = gcd(10000 * num, den);
801 num = 10000 * num / common;
802 den /= common;
803 dev_dbg(dev, "num %lu den %lu common %lu\n", num, den, common);
804
805 for (P = den; P <= 15; P++) {
806 if (pllin_rate / P < 6667000 || 200000000 < pllin_rate / P)
807 continue;
808 if (num * P % den)
809 continue;
810 K = num * P / den;
811
812 if (K < 40000 || K > 120000)
813 continue;
814
815 J = K / 10000;
816 D = K % 10000;
817 dev_dbg(dev, "J.D / P = %d.%04d / %d\n", J, D, P);
818 pcm512x->real_pll = pll_rate;
819 goto done;
820 }
821
822
823
824fallback:
825
826 P = DIV_ROUND_UP(pllin_rate, 20000000);
827 if (!P)
828 P = 1;
829 else if (P > 15) {
830 dev_err(dev, "Need a slower clock as pll-input\n");
831 return -EINVAL;
832 }
833 if (pllin_rate / P < 6667000) {
834 dev_err(dev, "Need a faster clock as pll-input\n");
835 return -EINVAL;
836 }
837 K = DIV_ROUND_CLOSEST_ULL(10000ULL * pll_rate * P, pllin_rate);
838 if (K < 40000)
839 K = 40000;
840
841 if (K > 120000)
842 K = 120000;
843 J = K / 10000;
844 D = K % 10000;
845 dev_dbg(dev, "J.D / P ~ %d.%04d / %d\n", J, D, P);
846 pcm512x->real_pll = DIV_ROUND_DOWN_ULL((u64)K * pllin_rate, 10000 * P);
847
848done:
849 pcm512x->pll_r = R;
850 pcm512x->pll_j = J;
851 pcm512x->pll_d = D;
852 pcm512x->pll_p = P;
853 return 0;
854}
855
856static unsigned long pcm512x_pllin_dac_rate(struct snd_soc_dai *dai,
857 unsigned long osr_rate,
858 unsigned long pllin_rate)
859{
860 struct snd_soc_component *component = dai->component;
861 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
862 unsigned long dac_rate;
863
864 if (!pcm512x->pll_out)
865 return 0;
866
867 if (pllin_rate % osr_rate)
868 return 0;
869
870
871 for (dac_rate = rounddown(pcm512x_dac_max(pcm512x, 6144000), osr_rate);
872 dac_rate;
873 dac_rate -= osr_rate) {
874
875 if (pllin_rate / dac_rate > 128)
876 return 0;
877
878 if (!(pllin_rate % dac_rate))
879 return dac_rate;
880
881 dac_rate -= osr_rate;
882 }
883
884 return 0;
885}
886
887static int pcm512x_set_dividers(struct snd_soc_dai *dai,
888 struct snd_pcm_hw_params *params)
889{
890 struct device *dev = dai->dev;
891 struct snd_soc_component *component = dai->component;
892 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
893 unsigned long pllin_rate = 0;
894 unsigned long pll_rate;
895 unsigned long sck_rate;
896 unsigned long mck_rate;
897 unsigned long bclk_rate;
898 unsigned long sample_rate;
899 unsigned long osr_rate;
900 unsigned long dacsrc_rate;
901 int bclk_div;
902 int lrclk_div;
903 int dsp_div;
904 int dac_div;
905 unsigned long dac_rate;
906 int ncp_div;
907 int osr_div;
908 int ret;
909 int idac;
910 int fssp;
911 int gpio;
912
913 if (pcm512x->bclk_ratio > 0) {
914 lrclk_div = pcm512x->bclk_ratio;
915 } else {
916 lrclk_div = snd_soc_params_to_frame_size(params);
917
918 if (lrclk_div == 0) {
919 dev_err(dev, "No LRCLK?\n");
920 return -EINVAL;
921 }
922 }
923
924 if (!pcm512x->pll_out) {
925 sck_rate = clk_get_rate(pcm512x->sclk);
926 bclk_rate = params_rate(params) * lrclk_div;
927 bclk_div = DIV_ROUND_CLOSEST(sck_rate, bclk_rate);
928
929 mck_rate = sck_rate;
930 } else {
931 ret = snd_soc_params_to_bclk(params);
932 if (ret < 0) {
933 dev_err(dev, "Failed to find suitable BCLK: %d\n", ret);
934 return ret;
935 }
936 if (ret == 0) {
937 dev_err(dev, "No BCLK?\n");
938 return -EINVAL;
939 }
940 bclk_rate = ret;
941
942 pllin_rate = clk_get_rate(pcm512x->sclk);
943
944 sck_rate = pcm512x_find_sck(dai, bclk_rate);
945 if (!sck_rate)
946 return -EINVAL;
947 pll_rate = 4 * sck_rate;
948
949 ret = pcm512x_find_pll_coeff(dai, pllin_rate, pll_rate);
950 if (ret != 0)
951 return ret;
952
953 ret = regmap_write(pcm512x->regmap,
954 PCM512x_PLL_COEFF_0, pcm512x->pll_p - 1);
955 if (ret != 0) {
956 dev_err(dev, "Failed to write PLL P: %d\n", ret);
957 return ret;
958 }
959
960 ret = regmap_write(pcm512x->regmap,
961 PCM512x_PLL_COEFF_1, pcm512x->pll_j);
962 if (ret != 0) {
963 dev_err(dev, "Failed to write PLL J: %d\n", ret);
964 return ret;
965 }
966
967 ret = regmap_write(pcm512x->regmap,
968 PCM512x_PLL_COEFF_2, pcm512x->pll_d >> 8);
969 if (ret != 0) {
970 dev_err(dev, "Failed to write PLL D msb: %d\n", ret);
971 return ret;
972 }
973
974 ret = regmap_write(pcm512x->regmap,
975 PCM512x_PLL_COEFF_3, pcm512x->pll_d & 0xff);
976 if (ret != 0) {
977 dev_err(dev, "Failed to write PLL D lsb: %d\n", ret);
978 return ret;
979 }
980
981 ret = regmap_write(pcm512x->regmap,
982 PCM512x_PLL_COEFF_4, pcm512x->pll_r - 1);
983 if (ret != 0) {
984 dev_err(dev, "Failed to write PLL R: %d\n", ret);
985 return ret;
986 }
987
988 mck_rate = pcm512x->real_pll;
989
990 bclk_div = DIV_ROUND_CLOSEST(sck_rate, bclk_rate);
991 }
992
993 if (bclk_div > 128) {
994 dev_err(dev, "Failed to find BCLK divider\n");
995 return -EINVAL;
996 }
997
998
999 sample_rate = sck_rate / bclk_div / lrclk_div;
1000 osr_rate = 16 * sample_rate;
1001
1002
1003 dsp_div = mck_rate > pcm512x_dsp_max(pcm512x) ? 2 : 1;
1004
1005 dac_rate = pcm512x_pllin_dac_rate(dai, osr_rate, pllin_rate);
1006 if (dac_rate) {
1007
1008
1009
1010
1011
1012 dev_dbg(dev, "using pll input as dac input\n");
1013 ret = regmap_update_bits(pcm512x->regmap, PCM512x_DAC_REF,
1014 PCM512x_SDAC, PCM512x_SDAC_GPIO);
1015 if (ret != 0) {
1016 dev_err(component->dev,
1017 "Failed to set gpio as dacref: %d\n", ret);
1018 return ret;
1019 }
1020
1021 gpio = PCM512x_GREF_GPIO1 + pcm512x->pll_in - 1;
1022 ret = regmap_update_bits(pcm512x->regmap, PCM512x_GPIO_DACIN,
1023 PCM512x_GREF, gpio);
1024 if (ret != 0) {
1025 dev_err(component->dev,
1026 "Failed to set gpio %d as dacin: %d\n",
1027 pcm512x->pll_in, ret);
1028 return ret;
1029 }
1030
1031 dacsrc_rate = pllin_rate;
1032 } else {
1033
1034 unsigned long dac_mul = pcm512x_dac_max(pcm512x, 6144000)
1035 / osr_rate;
1036 unsigned long sck_mul = sck_rate / osr_rate;
1037
1038 for (; dac_mul; dac_mul--) {
1039 if (!(sck_mul % dac_mul))
1040 break;
1041 }
1042 if (!dac_mul) {
1043 dev_err(dev, "Failed to find DAC rate\n");
1044 return -EINVAL;
1045 }
1046
1047 dac_rate = dac_mul * osr_rate;
1048 dev_dbg(dev, "dac_rate %lu sample_rate %lu\n",
1049 dac_rate, sample_rate);
1050
1051 ret = regmap_update_bits(pcm512x->regmap, PCM512x_DAC_REF,
1052 PCM512x_SDAC, PCM512x_SDAC_SCK);
1053 if (ret != 0) {
1054 dev_err(component->dev,
1055 "Failed to set sck as dacref: %d\n", ret);
1056 return ret;
1057 }
1058
1059 dacsrc_rate = sck_rate;
1060 }
1061
1062 osr_div = DIV_ROUND_CLOSEST(dac_rate, osr_rate);
1063 if (osr_div > 128) {
1064 dev_err(dev, "Failed to find OSR divider\n");
1065 return -EINVAL;
1066 }
1067
1068 dac_div = DIV_ROUND_CLOSEST(dacsrc_rate, dac_rate);
1069 if (dac_div > 128) {
1070 dev_err(dev, "Failed to find DAC divider\n");
1071 return -EINVAL;
1072 }
1073 dac_rate = dacsrc_rate / dac_div;
1074
1075 ncp_div = DIV_ROUND_CLOSEST(dac_rate,
1076 pcm512x_ncp_target(pcm512x, dac_rate));
1077 if (ncp_div > 128 || dac_rate / ncp_div > 2048000) {
1078
1079 ncp_div = DIV_ROUND_UP(dac_rate, 2048000);
1080 if (ncp_div > 128) {
1081 dev_err(dev, "Failed to find NCP divider\n");
1082 return -EINVAL;
1083 }
1084 }
1085
1086 idac = mck_rate / (dsp_div * sample_rate);
1087
1088 ret = regmap_write(pcm512x->regmap, PCM512x_DSP_CLKDIV, dsp_div - 1);
1089 if (ret != 0) {
1090 dev_err(dev, "Failed to write DSP divider: %d\n", ret);
1091 return ret;
1092 }
1093
1094 ret = regmap_write(pcm512x->regmap, PCM512x_DAC_CLKDIV, dac_div - 1);
1095 if (ret != 0) {
1096 dev_err(dev, "Failed to write DAC divider: %d\n", ret);
1097 return ret;
1098 }
1099
1100 ret = regmap_write(pcm512x->regmap, PCM512x_NCP_CLKDIV, ncp_div - 1);
1101 if (ret != 0) {
1102 dev_err(dev, "Failed to write NCP divider: %d\n", ret);
1103 return ret;
1104 }
1105
1106 ret = regmap_write(pcm512x->regmap, PCM512x_OSR_CLKDIV, osr_div - 1);
1107 if (ret != 0) {
1108 dev_err(dev, "Failed to write OSR divider: %d\n", ret);
1109 return ret;
1110 }
1111
1112 ret = regmap_write(pcm512x->regmap,
1113 PCM512x_MASTER_CLKDIV_1, bclk_div - 1);
1114 if (ret != 0) {
1115 dev_err(dev, "Failed to write BCLK divider: %d\n", ret);
1116 return ret;
1117 }
1118
1119 ret = regmap_write(pcm512x->regmap,
1120 PCM512x_MASTER_CLKDIV_2, lrclk_div - 1);
1121 if (ret != 0) {
1122 dev_err(dev, "Failed to write LRCLK divider: %d\n", ret);
1123 return ret;
1124 }
1125
1126 ret = regmap_write(pcm512x->regmap, PCM512x_IDAC_1, idac >> 8);
1127 if (ret != 0) {
1128 dev_err(dev, "Failed to write IDAC msb divider: %d\n", ret);
1129 return ret;
1130 }
1131
1132 ret = regmap_write(pcm512x->regmap, PCM512x_IDAC_2, idac & 0xff);
1133 if (ret != 0) {
1134 dev_err(dev, "Failed to write IDAC lsb divider: %d\n", ret);
1135 return ret;
1136 }
1137
1138 if (sample_rate <= pcm512x_dac_max(pcm512x, 48000))
1139 fssp = PCM512x_FSSP_48KHZ;
1140 else if (sample_rate <= pcm512x_dac_max(pcm512x, 96000))
1141 fssp = PCM512x_FSSP_96KHZ;
1142 else if (sample_rate <= pcm512x_dac_max(pcm512x, 192000))
1143 fssp = PCM512x_FSSP_192KHZ;
1144 else
1145 fssp = PCM512x_FSSP_384KHZ;
1146 ret = regmap_update_bits(pcm512x->regmap, PCM512x_FS_SPEED_MODE,
1147 PCM512x_FSSP, fssp);
1148 if (ret != 0) {
1149 dev_err(component->dev, "Failed to set fs speed: %d\n", ret);
1150 return ret;
1151 }
1152
1153 dev_dbg(component->dev, "DSP divider %d\n", dsp_div);
1154 dev_dbg(component->dev, "DAC divider %d\n", dac_div);
1155 dev_dbg(component->dev, "NCP divider %d\n", ncp_div);
1156 dev_dbg(component->dev, "OSR divider %d\n", osr_div);
1157 dev_dbg(component->dev, "BCK divider %d\n", bclk_div);
1158 dev_dbg(component->dev, "LRCK divider %d\n", lrclk_div);
1159 dev_dbg(component->dev, "IDAC %d\n", idac);
1160 dev_dbg(component->dev, "1<<FSSP %d\n", 1 << fssp);
1161
1162 return 0;
1163}
1164
1165static int pcm512x_hw_params(struct snd_pcm_substream *substream,
1166 struct snd_pcm_hw_params *params,
1167 struct snd_soc_dai *dai)
1168{
1169 struct snd_soc_component *component = dai->component;
1170 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
1171 int alen;
1172 int gpio;
1173 int ret;
1174
1175 dev_dbg(component->dev, "hw_params %u Hz, %u channels\n",
1176 params_rate(params),
1177 params_channels(params));
1178
1179 switch (params_width(params)) {
1180 case 16:
1181 alen = PCM512x_ALEN_16;
1182 break;
1183 case 20:
1184 alen = PCM512x_ALEN_20;
1185 break;
1186 case 24:
1187 alen = PCM512x_ALEN_24;
1188 break;
1189 case 32:
1190 alen = PCM512x_ALEN_32;
1191 break;
1192 default:
1193 dev_err(component->dev, "Bad frame size: %d\n",
1194 params_width(params));
1195 return -EINVAL;
1196 }
1197
1198 ret = regmap_update_bits(pcm512x->regmap, PCM512x_I2S_1,
1199 PCM512x_ALEN, alen);
1200 if (ret != 0) {
1201 dev_err(component->dev, "Failed to set frame size: %d\n", ret);
1202 return ret;
1203 }
1204
1205 if ((pcm512x->fmt & SND_SOC_DAIFMT_MASTER_MASK) ==
1206 SND_SOC_DAIFMT_CBS_CFS) {
1207 ret = regmap_update_bits(pcm512x->regmap, PCM512x_ERROR_DETECT,
1208 PCM512x_DCAS, 0);
1209 if (ret != 0) {
1210 dev_err(component->dev,
1211 "Failed to enable clock divider autoset: %d\n",
1212 ret);
1213 return ret;
1214 }
1215 goto skip_pll;
1216 }
1217
1218 if (pcm512x->pll_out) {
1219 ret = regmap_write(pcm512x->regmap, PCM512x_FLEX_A, 0x11);
1220 if (ret != 0) {
1221 dev_err(component->dev, "Failed to set FLEX_A: %d\n", ret);
1222 return ret;
1223 }
1224
1225 ret = regmap_write(pcm512x->regmap, PCM512x_FLEX_B, 0xff);
1226 if (ret != 0) {
1227 dev_err(component->dev, "Failed to set FLEX_B: %d\n", ret);
1228 return ret;
1229 }
1230
1231 ret = regmap_update_bits(pcm512x->regmap, PCM512x_ERROR_DETECT,
1232 PCM512x_IDFS | PCM512x_IDBK
1233 | PCM512x_IDSK | PCM512x_IDCH
1234 | PCM512x_IDCM | PCM512x_DCAS
1235 | PCM512x_IPLK,
1236 PCM512x_IDFS | PCM512x_IDBK
1237 | PCM512x_IDSK | PCM512x_IDCH
1238 | PCM512x_DCAS);
1239 if (ret != 0) {
1240 dev_err(component->dev,
1241 "Failed to ignore auto-clock failures: %d\n",
1242 ret);
1243 return ret;
1244 }
1245 } else {
1246 ret = regmap_update_bits(pcm512x->regmap, PCM512x_ERROR_DETECT,
1247 PCM512x_IDFS | PCM512x_IDBK
1248 | PCM512x_IDSK | PCM512x_IDCH
1249 | PCM512x_IDCM | PCM512x_DCAS
1250 | PCM512x_IPLK,
1251 PCM512x_IDFS | PCM512x_IDBK
1252 | PCM512x_IDSK | PCM512x_IDCH
1253 | PCM512x_DCAS | PCM512x_IPLK);
1254 if (ret != 0) {
1255 dev_err(component->dev,
1256 "Failed to ignore auto-clock failures: %d\n",
1257 ret);
1258 return ret;
1259 }
1260
1261 ret = regmap_update_bits(pcm512x->regmap, PCM512x_PLL_EN,
1262 PCM512x_PLLE, 0);
1263 if (ret != 0) {
1264 dev_err(component->dev, "Failed to disable pll: %d\n", ret);
1265 return ret;
1266 }
1267 }
1268
1269 ret = pcm512x_set_dividers(dai, params);
1270 if (ret != 0)
1271 return ret;
1272
1273 if (pcm512x->pll_out) {
1274 ret = regmap_update_bits(pcm512x->regmap, PCM512x_PLL_REF,
1275 PCM512x_SREF, PCM512x_SREF_GPIO);
1276 if (ret != 0) {
1277 dev_err(component->dev,
1278 "Failed to set gpio as pllref: %d\n", ret);
1279 return ret;
1280 }
1281
1282 gpio = PCM512x_GREF_GPIO1 + pcm512x->pll_in - 1;
1283 ret = regmap_update_bits(pcm512x->regmap, PCM512x_GPIO_PLLIN,
1284 PCM512x_GREF, gpio);
1285 if (ret != 0) {
1286 dev_err(component->dev,
1287 "Failed to set gpio %d as pllin: %d\n",
1288 pcm512x->pll_in, ret);
1289 return ret;
1290 }
1291
1292 ret = regmap_update_bits(pcm512x->regmap, PCM512x_PLL_EN,
1293 PCM512x_PLLE, PCM512x_PLLE);
1294 if (ret != 0) {
1295 dev_err(component->dev, "Failed to enable pll: %d\n", ret);
1296 return ret;
1297 }
1298
1299 gpio = PCM512x_G1OE << (pcm512x->pll_out - 1);
1300 ret = regmap_update_bits(pcm512x->regmap, PCM512x_GPIO_EN,
1301 gpio, gpio);
1302 if (ret != 0) {
1303 dev_err(component->dev, "Failed to enable gpio %d: %d\n",
1304 pcm512x->pll_out, ret);
1305 return ret;
1306 }
1307
1308 gpio = PCM512x_GPIO_OUTPUT_1 + pcm512x->pll_out - 1;
1309 ret = regmap_update_bits(pcm512x->regmap, gpio,
1310 PCM512x_GxSL, PCM512x_GxSL_PLLCK);
1311 if (ret != 0) {
1312 dev_err(component->dev, "Failed to output pll on %d: %d\n",
1313 ret, pcm512x->pll_out);
1314 return ret;
1315 }
1316 }
1317
1318 ret = regmap_update_bits(pcm512x->regmap, PCM512x_SYNCHRONIZE,
1319 PCM512x_RQSY, PCM512x_RQSY_HALT);
1320 if (ret != 0) {
1321 dev_err(component->dev, "Failed to halt clocks: %d\n", ret);
1322 return ret;
1323 }
1324
1325 ret = regmap_update_bits(pcm512x->regmap, PCM512x_SYNCHRONIZE,
1326 PCM512x_RQSY, PCM512x_RQSY_RESUME);
1327 if (ret != 0) {
1328 dev_err(component->dev, "Failed to resume clocks: %d\n", ret);
1329 return ret;
1330 }
1331
1332skip_pll:
1333 return 0;
1334}
1335
1336static int pcm512x_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
1337{
1338 struct snd_soc_component *component = dai->component;
1339 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
1340 int afmt;
1341 int offset = 0;
1342 int clock_output;
1343 int master_mode;
1344 int ret;
1345
1346 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1347 case SND_SOC_DAIFMT_CBS_CFS:
1348 clock_output = 0;
1349 master_mode = 0;
1350 break;
1351 case SND_SOC_DAIFMT_CBM_CFM:
1352 clock_output = PCM512x_BCKO | PCM512x_LRKO;
1353 master_mode = PCM512x_RLRK | PCM512x_RBCK;
1354 break;
1355 case SND_SOC_DAIFMT_CBM_CFS:
1356 clock_output = PCM512x_BCKO;
1357 master_mode = PCM512x_RBCK;
1358 break;
1359 default:
1360 return -EINVAL;
1361 }
1362
1363 ret = regmap_update_bits(pcm512x->regmap, PCM512x_BCLK_LRCLK_CFG,
1364 PCM512x_BCKP | PCM512x_BCKO | PCM512x_LRKO,
1365 clock_output);
1366 if (ret != 0) {
1367 dev_err(component->dev, "Failed to enable clock output: %d\n", ret);
1368 return ret;
1369 }
1370
1371 ret = regmap_update_bits(pcm512x->regmap, PCM512x_MASTER_MODE,
1372 PCM512x_RLRK | PCM512x_RBCK,
1373 master_mode);
1374 if (ret != 0) {
1375 dev_err(component->dev, "Failed to enable master mode: %d\n", ret);
1376 return ret;
1377 }
1378
1379 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1380 case SND_SOC_DAIFMT_I2S:
1381 afmt = PCM512x_AFMT_I2S;
1382 break;
1383 case SND_SOC_DAIFMT_RIGHT_J:
1384 afmt = PCM512x_AFMT_RTJ;
1385 break;
1386 case SND_SOC_DAIFMT_LEFT_J:
1387 afmt = PCM512x_AFMT_LTJ;
1388 break;
1389 case SND_SOC_DAIFMT_DSP_A:
1390 offset = 1;
1391 fallthrough;
1392 case SND_SOC_DAIFMT_DSP_B:
1393 afmt = PCM512x_AFMT_DSP;
1394 break;
1395 default:
1396 dev_err(component->dev, "unsupported DAI format: 0x%x\n",
1397 pcm512x->fmt);
1398 return -EINVAL;
1399 }
1400
1401 ret = regmap_update_bits(pcm512x->regmap, PCM512x_I2S_1,
1402 PCM512x_AFMT, afmt);
1403 if (ret != 0) {
1404 dev_err(component->dev, "Failed to set data format: %d\n", ret);
1405 return ret;
1406 }
1407
1408 ret = regmap_update_bits(pcm512x->regmap, PCM512x_I2S_2,
1409 0xFF, offset);
1410 if (ret != 0) {
1411 dev_err(component->dev, "Failed to set data offset: %d\n", ret);
1412 return ret;
1413 }
1414
1415 pcm512x->fmt = fmt;
1416
1417 return 0;
1418}
1419
1420static int pcm512x_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
1421{
1422 struct snd_soc_component *component = dai->component;
1423 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
1424
1425 if (ratio > 256)
1426 return -EINVAL;
1427
1428 pcm512x->bclk_ratio = ratio;
1429
1430 return 0;
1431}
1432
1433static int pcm512x_mute(struct snd_soc_dai *dai, int mute, int direction)
1434{
1435 struct snd_soc_component *component = dai->component;
1436 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
1437 int ret;
1438 unsigned int mute_det;
1439
1440 mutex_lock(&pcm512x->mutex);
1441
1442 if (mute) {
1443 pcm512x->mute |= 0x1;
1444 ret = regmap_update_bits(pcm512x->regmap, PCM512x_MUTE,
1445 PCM512x_RQML | PCM512x_RQMR,
1446 PCM512x_RQML | PCM512x_RQMR);
1447 if (ret != 0) {
1448 dev_err(component->dev,
1449 "Failed to set digital mute: %d\n", ret);
1450 goto unlock;
1451 }
1452
1453 regmap_read_poll_timeout(pcm512x->regmap,
1454 PCM512x_ANALOG_MUTE_DET,
1455 mute_det, (mute_det & 0x3) == 0,
1456 200, 10000);
1457 } else {
1458 pcm512x->mute &= ~0x1;
1459 ret = pcm512x_update_mute(pcm512x);
1460 if (ret != 0) {
1461 dev_err(component->dev,
1462 "Failed to update digital mute: %d\n", ret);
1463 goto unlock;
1464 }
1465
1466 regmap_read_poll_timeout(pcm512x->regmap,
1467 PCM512x_ANALOG_MUTE_DET,
1468 mute_det,
1469 (mute_det & 0x3)
1470 == ((~pcm512x->mute >> 1) & 0x3),
1471 200, 10000);
1472 }
1473
1474unlock:
1475 mutex_unlock(&pcm512x->mutex);
1476
1477 return ret;
1478}
1479
1480static const struct snd_soc_dai_ops pcm512x_dai_ops = {
1481 .startup = pcm512x_dai_startup,
1482 .hw_params = pcm512x_hw_params,
1483 .set_fmt = pcm512x_set_fmt,
1484 .mute_stream = pcm512x_mute,
1485 .set_bclk_ratio = pcm512x_set_bclk_ratio,
1486 .no_capture_mute = 1,
1487};
1488
1489static struct snd_soc_dai_driver pcm512x_dai = {
1490 .name = "pcm512x-hifi",
1491 .playback = {
1492 .stream_name = "Playback",
1493 .channels_min = 2,
1494 .channels_max = 2,
1495 .rates = SNDRV_PCM_RATE_CONTINUOUS,
1496 .rate_min = 8000,
1497 .rate_max = 384000,
1498 .formats = SNDRV_PCM_FMTBIT_S16_LE |
1499 SNDRV_PCM_FMTBIT_S24_LE |
1500 SNDRV_PCM_FMTBIT_S32_LE
1501 },
1502 .ops = &pcm512x_dai_ops,
1503};
1504
1505static const struct snd_soc_component_driver pcm512x_component_driver = {
1506 .set_bias_level = pcm512x_set_bias_level,
1507 .controls = pcm512x_controls,
1508 .num_controls = ARRAY_SIZE(pcm512x_controls),
1509 .dapm_widgets = pcm512x_dapm_widgets,
1510 .num_dapm_widgets = ARRAY_SIZE(pcm512x_dapm_widgets),
1511 .dapm_routes = pcm512x_dapm_routes,
1512 .num_dapm_routes = ARRAY_SIZE(pcm512x_dapm_routes),
1513 .use_pmdown_time = 1,
1514 .endianness = 1,
1515 .non_legacy_dai_naming = 1,
1516};
1517
1518static const struct regmap_range_cfg pcm512x_range = {
1519 .name = "Pages", .range_min = PCM512x_VIRT_BASE,
1520 .range_max = PCM512x_MAX_REGISTER,
1521 .selector_reg = PCM512x_PAGE,
1522 .selector_mask = 0xff,
1523 .window_start = 0, .window_len = 0x100,
1524};
1525
1526const struct regmap_config pcm512x_regmap = {
1527 .reg_bits = 8,
1528 .val_bits = 8,
1529
1530 .readable_reg = pcm512x_readable,
1531 .volatile_reg = pcm512x_volatile,
1532
1533 .ranges = &pcm512x_range,
1534 .num_ranges = 1,
1535
1536 .max_register = PCM512x_MAX_REGISTER,
1537 .reg_defaults = pcm512x_reg_defaults,
1538 .num_reg_defaults = ARRAY_SIZE(pcm512x_reg_defaults),
1539 .cache_type = REGCACHE_RBTREE,
1540};
1541EXPORT_SYMBOL_GPL(pcm512x_regmap);
1542
1543int pcm512x_probe(struct device *dev, struct regmap *regmap)
1544{
1545 struct pcm512x_priv *pcm512x;
1546 int i, ret;
1547
1548 pcm512x = devm_kzalloc(dev, sizeof(struct pcm512x_priv), GFP_KERNEL);
1549 if (!pcm512x)
1550 return -ENOMEM;
1551
1552 mutex_init(&pcm512x->mutex);
1553
1554 dev_set_drvdata(dev, pcm512x);
1555 pcm512x->regmap = regmap;
1556
1557 for (i = 0; i < ARRAY_SIZE(pcm512x->supplies); i++)
1558 pcm512x->supplies[i].supply = pcm512x_supply_names[i];
1559
1560 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(pcm512x->supplies),
1561 pcm512x->supplies);
1562 if (ret != 0) {
1563 dev_err(dev, "Failed to get supplies: %d\n", ret);
1564 return ret;
1565 }
1566
1567 pcm512x->supply_nb[0].notifier_call = pcm512x_regulator_event_0;
1568 pcm512x->supply_nb[1].notifier_call = pcm512x_regulator_event_1;
1569 pcm512x->supply_nb[2].notifier_call = pcm512x_regulator_event_2;
1570
1571 for (i = 0; i < ARRAY_SIZE(pcm512x->supplies); i++) {
1572 ret = devm_regulator_register_notifier(
1573 pcm512x->supplies[i].consumer,
1574 &pcm512x->supply_nb[i]);
1575 if (ret != 0) {
1576 dev_err(dev,
1577 "Failed to register regulator notifier: %d\n",
1578 ret);
1579 }
1580 }
1581
1582 ret = regulator_bulk_enable(ARRAY_SIZE(pcm512x->supplies),
1583 pcm512x->supplies);
1584 if (ret != 0) {
1585 dev_err(dev, "Failed to enable supplies: %d\n", ret);
1586 return ret;
1587 }
1588
1589
1590 ret = regmap_write(regmap, PCM512x_RESET,
1591 PCM512x_RSTM | PCM512x_RSTR);
1592 if (ret != 0) {
1593 dev_err(dev, "Failed to reset device: %d\n", ret);
1594 goto err;
1595 }
1596
1597 ret = regmap_write(regmap, PCM512x_RESET, 0);
1598 if (ret != 0) {
1599 dev_err(dev, "Failed to reset device: %d\n", ret);
1600 goto err;
1601 }
1602
1603 pcm512x->sclk = devm_clk_get(dev, NULL);
1604 if (PTR_ERR(pcm512x->sclk) == -EPROBE_DEFER) {
1605 ret = -EPROBE_DEFER;
1606 goto err;
1607 }
1608 if (!IS_ERR(pcm512x->sclk)) {
1609 ret = clk_prepare_enable(pcm512x->sclk);
1610 if (ret != 0) {
1611 dev_err(dev, "Failed to enable SCLK: %d\n", ret);
1612 goto err;
1613 }
1614 }
1615
1616
1617 ret = regmap_update_bits(pcm512x->regmap, PCM512x_POWER,
1618 PCM512x_RQST, PCM512x_RQST);
1619 if (ret != 0) {
1620 dev_err(dev, "Failed to request standby: %d\n",
1621 ret);
1622 goto err_clk;
1623 }
1624
1625 pm_runtime_set_active(dev);
1626 pm_runtime_enable(dev);
1627 pm_runtime_idle(dev);
1628
1629#ifdef CONFIG_OF
1630 if (dev->of_node) {
1631 const struct device_node *np = dev->of_node;
1632 u32 val;
1633
1634 if (of_property_read_u32(np, "pll-in", &val) >= 0) {
1635 if (val > 6) {
1636 dev_err(dev, "Invalid pll-in\n");
1637 ret = -EINVAL;
1638 goto err_clk;
1639 }
1640 pcm512x->pll_in = val;
1641 }
1642
1643 if (of_property_read_u32(np, "pll-out", &val) >= 0) {
1644 if (val > 6) {
1645 dev_err(dev, "Invalid pll-out\n");
1646 ret = -EINVAL;
1647 goto err_clk;
1648 }
1649 pcm512x->pll_out = val;
1650 }
1651
1652 if (!pcm512x->pll_in != !pcm512x->pll_out) {
1653 dev_err(dev,
1654 "Error: both pll-in and pll-out, or none\n");
1655 ret = -EINVAL;
1656 goto err_clk;
1657 }
1658 if (pcm512x->pll_in && pcm512x->pll_in == pcm512x->pll_out) {
1659 dev_err(dev, "Error: pll-in == pll-out\n");
1660 ret = -EINVAL;
1661 goto err_clk;
1662 }
1663 }
1664#endif
1665
1666 ret = devm_snd_soc_register_component(dev, &pcm512x_component_driver,
1667 &pcm512x_dai, 1);
1668 if (ret != 0) {
1669 dev_err(dev, "Failed to register CODEC: %d\n", ret);
1670 goto err_pm;
1671 }
1672
1673 return 0;
1674
1675err_pm:
1676 pm_runtime_disable(dev);
1677err_clk:
1678 if (!IS_ERR(pcm512x->sclk))
1679 clk_disable_unprepare(pcm512x->sclk);
1680err:
1681 regulator_bulk_disable(ARRAY_SIZE(pcm512x->supplies),
1682 pcm512x->supplies);
1683 return ret;
1684}
1685EXPORT_SYMBOL_GPL(pcm512x_probe);
1686
1687void pcm512x_remove(struct device *dev)
1688{
1689 struct pcm512x_priv *pcm512x = dev_get_drvdata(dev);
1690
1691 pm_runtime_disable(dev);
1692 if (!IS_ERR(pcm512x->sclk))
1693 clk_disable_unprepare(pcm512x->sclk);
1694 regulator_bulk_disable(ARRAY_SIZE(pcm512x->supplies),
1695 pcm512x->supplies);
1696}
1697EXPORT_SYMBOL_GPL(pcm512x_remove);
1698
1699#ifdef CONFIG_PM
1700static int pcm512x_suspend(struct device *dev)
1701{
1702 struct pcm512x_priv *pcm512x = dev_get_drvdata(dev);
1703 int ret;
1704
1705 ret = regmap_update_bits(pcm512x->regmap, PCM512x_POWER,
1706 PCM512x_RQPD, PCM512x_RQPD);
1707 if (ret != 0) {
1708 dev_err(dev, "Failed to request power down: %d\n", ret);
1709 return ret;
1710 }
1711
1712 ret = regulator_bulk_disable(ARRAY_SIZE(pcm512x->supplies),
1713 pcm512x->supplies);
1714 if (ret != 0) {
1715 dev_err(dev, "Failed to disable supplies: %d\n", ret);
1716 return ret;
1717 }
1718
1719 if (!IS_ERR(pcm512x->sclk))
1720 clk_disable_unprepare(pcm512x->sclk);
1721
1722 return 0;
1723}
1724
1725static int pcm512x_resume(struct device *dev)
1726{
1727 struct pcm512x_priv *pcm512x = dev_get_drvdata(dev);
1728 int ret;
1729
1730 if (!IS_ERR(pcm512x->sclk)) {
1731 ret = clk_prepare_enable(pcm512x->sclk);
1732 if (ret != 0) {
1733 dev_err(dev, "Failed to enable SCLK: %d\n", ret);
1734 return ret;
1735 }
1736 }
1737
1738 ret = regulator_bulk_enable(ARRAY_SIZE(pcm512x->supplies),
1739 pcm512x->supplies);
1740 if (ret != 0) {
1741 dev_err(dev, "Failed to enable supplies: %d\n", ret);
1742 return ret;
1743 }
1744
1745 regcache_cache_only(pcm512x->regmap, false);
1746 ret = regcache_sync(pcm512x->regmap);
1747 if (ret != 0) {
1748 dev_err(dev, "Failed to sync cache: %d\n", ret);
1749 return ret;
1750 }
1751
1752 ret = regmap_update_bits(pcm512x->regmap, PCM512x_POWER,
1753 PCM512x_RQPD, 0);
1754 if (ret != 0) {
1755 dev_err(dev, "Failed to remove power down: %d\n", ret);
1756 return ret;
1757 }
1758
1759 return 0;
1760}
1761#endif
1762
1763const struct dev_pm_ops pcm512x_pm_ops = {
1764 SET_RUNTIME_PM_OPS(pcm512x_suspend, pcm512x_resume, NULL)
1765};
1766EXPORT_SYMBOL_GPL(pcm512x_pm_ops);
1767
1768MODULE_DESCRIPTION("ASoC PCM512x codec driver");
1769MODULE_AUTHOR("Mark Brown <broonie@kernel.org>");
1770MODULE_LICENSE("GPL v2");
1771
