1 // SPDX-License-Identifier: GPL-2.0-only
3 * Driver for the PCM512x CODECs
5 * Author: Mark Brown <broonie@kernel.org>
6 * Copyright 2014 Linaro Ltd
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>
25 #define PCM512x_NUM_SUPPLIES 3
26 static const char * const pcm512x_supply_names[PCM512x_NUM_SUPPLIES] = {
33 struct regmap *regmap;
35 struct regulator_bulk_data supplies[PCM512x_NUM_SUPPLIES];
36 struct notifier_block supply_nb[PCM512x_NUM_SUPPLIES];
44 unsigned long real_pll;
45 unsigned long overclock_pll;
46 unsigned long overclock_dac;
47 unsigned long overclock_dsp;
50 unsigned int bclk_ratio;
54 * We can't use the same notifier block for more than one supply and
55 * there's no way I can see to get from a callback to the caller
56 * except container_of().
58 #define PCM512x_REGULATOR_EVENT(n) \
59 static int pcm512x_regulator_event_##n(struct notifier_block *nb, \
60 unsigned long event, void *data) \
62 struct pcm512x_priv *pcm512x = container_of(nb, struct pcm512x_priv, \
64 if (event & REGULATOR_EVENT_DISABLE) { \
65 regcache_mark_dirty(pcm512x->regmap); \
66 regcache_cache_only(pcm512x->regmap, true); \
71 PCM512x_REGULATOR_EVENT(0)
72 PCM512x_REGULATOR_EVENT(1)
73 PCM512x_REGULATOR_EVENT(2)
75 static 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 },
123 static bool pcm512x_readable(struct device *dev, unsigned int reg)
130 case PCM512x_SPI_MISO_FUNCTION:
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:
155 case PCM512x_ERROR_DETECT:
158 case PCM512x_DAC_ROUTING:
159 case PCM512x_DSP_PROGRAM:
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:
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:
197 /* There are 256 raw register addresses */
202 static bool pcm512x_volatile(struct device *dev, unsigned int reg)
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:
214 case PCM512x_DIGITAL_MUTE_DET:
215 case PCM512x_CRAM_CTRL:
218 /* There are 256 raw register addresses */
223 static int pcm512x_overclock_pll_get(struct snd_kcontrol *kcontrol,
224 struct snd_ctl_elem_value *ucontrol)
226 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
227 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
229 ucontrol->value.integer.value[0] = pcm512x->overclock_pll;
233 static int pcm512x_overclock_pll_put(struct snd_kcontrol *kcontrol,
234 struct snd_ctl_elem_value *ucontrol)
236 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
237 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
239 switch (snd_soc_component_get_bias_level(component)) {
240 case SND_SOC_BIAS_OFF:
241 case SND_SOC_BIAS_STANDBY:
247 pcm512x->overclock_pll = ucontrol->value.integer.value[0];
251 static int pcm512x_overclock_dsp_get(struct snd_kcontrol *kcontrol,
252 struct snd_ctl_elem_value *ucontrol)
254 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
255 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
257 ucontrol->value.integer.value[0] = pcm512x->overclock_dsp;
261 static int pcm512x_overclock_dsp_put(struct snd_kcontrol *kcontrol,
262 struct snd_ctl_elem_value *ucontrol)
264 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
265 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
267 switch (snd_soc_component_get_bias_level(component)) {
268 case SND_SOC_BIAS_OFF:
269 case SND_SOC_BIAS_STANDBY:
275 pcm512x->overclock_dsp = ucontrol->value.integer.value[0];
279 static int pcm512x_overclock_dac_get(struct snd_kcontrol *kcontrol,
280 struct snd_ctl_elem_value *ucontrol)
282 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
283 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
285 ucontrol->value.integer.value[0] = pcm512x->overclock_dac;
289 static int pcm512x_overclock_dac_put(struct snd_kcontrol *kcontrol,
290 struct snd_ctl_elem_value *ucontrol)
292 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
293 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
295 switch (snd_soc_component_get_bias_level(component)) {
296 case SND_SOC_BIAS_OFF:
297 case SND_SOC_BIAS_STANDBY:
303 pcm512x->overclock_dac = ucontrol->value.integer.value[0];
307 static const DECLARE_TLV_DB_SCALE(digital_tlv, -10350, 50, 1);
308 static const DECLARE_TLV_DB_SCALE(analog_tlv, -600, 600, 0);
309 static const DECLARE_TLV_DB_SCALE(boost_tlv, 0, 80, 0);
311 static 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",
319 static const unsigned int pcm512x_dsp_program_values[] = {
327 static SOC_VALUE_ENUM_SINGLE_DECL(pcm512x_dsp_program,
328 PCM512x_DSP_PROGRAM, 0, 0x1f,
329 pcm512x_dsp_program_texts,
330 pcm512x_dsp_program_values);
332 static const char * const pcm512x_clk_missing_text[] = {
333 "1s", "2s", "3s", "4s", "5s", "6s", "7s", "8s"
336 static const struct soc_enum pcm512x_clk_missing =
337 SOC_ENUM_SINGLE(PCM512x_CLKDET, 0, 8, pcm512x_clk_missing_text);
339 static const char * const pcm512x_autom_text[] = {
340 "21ms", "106ms", "213ms", "533ms", "1.07s", "2.13s", "5.33s", "10.66s"
343 static const struct soc_enum pcm512x_autom_l =
344 SOC_ENUM_SINGLE(PCM512x_AUTO_MUTE, PCM512x_ATML_SHIFT, 8,
347 static const struct soc_enum pcm512x_autom_r =
348 SOC_ENUM_SINGLE(PCM512x_AUTO_MUTE, PCM512x_ATMR_SHIFT, 8,
351 static const char * const pcm512x_ramp_rate_text[] = {
352 "1 sample/update", "2 samples/update", "4 samples/update",
356 static const struct soc_enum pcm512x_vndf =
357 SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_1, PCM512x_VNDF_SHIFT, 4,
358 pcm512x_ramp_rate_text);
360 static const struct soc_enum pcm512x_vnuf =
361 SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_1, PCM512x_VNUF_SHIFT, 4,
362 pcm512x_ramp_rate_text);
364 static const struct soc_enum pcm512x_vedf =
365 SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_2, PCM512x_VEDF_SHIFT, 4,
366 pcm512x_ramp_rate_text);
368 static const char * const pcm512x_ramp_step_text[] = {
369 "4dB/step", "2dB/step", "1dB/step", "0.5dB/step"
372 static const struct soc_enum pcm512x_vnds =
373 SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_1, PCM512x_VNDS_SHIFT, 4,
374 pcm512x_ramp_step_text);
376 static const struct soc_enum pcm512x_vnus =
377 SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_1, PCM512x_VNUS_SHIFT, 4,
378 pcm512x_ramp_step_text);
380 static const struct soc_enum pcm512x_veds =
381 SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_2, PCM512x_VEDS_SHIFT, 4,
382 pcm512x_ramp_step_text);
384 static int pcm512x_update_mute(struct pcm512x_priv *pcm512x)
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));
392 static int pcm512x_digital_playback_switch_get(struct snd_kcontrol *kcontrol,
393 struct snd_ctl_elem_value *ucontrol)
395 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
396 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
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);
406 static int pcm512x_digital_playback_switch_put(struct snd_kcontrol *kcontrol,
407 struct snd_ctl_elem_value *ucontrol)
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;
413 mutex_lock(&pcm512x->mutex);
415 if ((pcm512x->mute & 0x4) == (ucontrol->value.integer.value[0] << 2)) {
416 pcm512x->mute ^= 0x4;
419 if ((pcm512x->mute & 0x2) == (ucontrol->value.integer.value[1] << 1)) {
420 pcm512x->mute ^= 0x2;
425 ret = pcm512x_update_mute(pcm512x);
427 dev_err(component->dev,
428 "Failed to update digital mute: %d\n", ret);
429 mutex_unlock(&pcm512x->mutex);
434 mutex_unlock(&pcm512x->mutex);
439 static const struct snd_kcontrol_new pcm512x_controls[] = {
440 SOC_DOUBLE_R_TLV("Digital Playback Volume", PCM512x_DIGITAL_VOLUME_2,
441 PCM512x_DIGITAL_VOLUME_3, 0, 255, 1, digital_tlv),
442 SOC_DOUBLE_TLV("Analogue Playback Volume", PCM512x_ANALOG_GAIN_CTRL,
443 PCM512x_LAGN_SHIFT, PCM512x_RAGN_SHIFT, 1, 1, analog_tlv),
444 SOC_DOUBLE_TLV("Analogue Playback Boost Volume", PCM512x_ANALOG_GAIN_BOOST,
445 PCM512x_AGBL_SHIFT, PCM512x_AGBR_SHIFT, 1, 0, boost_tlv),
447 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
448 .name = "Digital Playback Switch",
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
456 SOC_SINGLE("Deemphasis Switch", PCM512x_DSP, PCM512x_DEMP_SHIFT, 1, 1),
457 SOC_ENUM("DSP Program", pcm512x_dsp_program),
459 SOC_ENUM("Clock Missing Period", pcm512x_clk_missing),
460 SOC_ENUM("Auto Mute Time Left", pcm512x_autom_l),
461 SOC_ENUM("Auto Mute Time Right", pcm512x_autom_r),
462 SOC_SINGLE("Auto Mute Mono Switch", PCM512x_DIGITAL_MUTE_3,
463 PCM512x_ACTL_SHIFT, 1, 0),
464 SOC_DOUBLE("Auto Mute Switch", PCM512x_DIGITAL_MUTE_3, PCM512x_AMLE_SHIFT,
465 PCM512x_AMRE_SHIFT, 1, 0),
467 SOC_ENUM("Volume Ramp Down Rate", pcm512x_vndf),
468 SOC_ENUM("Volume Ramp Down Step", pcm512x_vnds),
469 SOC_ENUM("Volume Ramp Up Rate", pcm512x_vnuf),
470 SOC_ENUM("Volume Ramp Up Step", pcm512x_vnus),
471 SOC_ENUM("Volume Ramp Down Emergency Rate", pcm512x_vedf),
472 SOC_ENUM("Volume Ramp Down Emergency Step", pcm512x_veds),
474 SOC_SINGLE_EXT("Max Overclock PLL", SND_SOC_NOPM, 0, 20, 0,
475 pcm512x_overclock_pll_get, pcm512x_overclock_pll_put),
476 SOC_SINGLE_EXT("Max Overclock DSP", SND_SOC_NOPM, 0, 40, 0,
477 pcm512x_overclock_dsp_get, pcm512x_overclock_dsp_put),
478 SOC_SINGLE_EXT("Max Overclock DAC", SND_SOC_NOPM, 0, 40, 0,
479 pcm512x_overclock_dac_get, pcm512x_overclock_dac_put),
482 static const struct snd_soc_dapm_widget pcm512x_dapm_widgets[] = {
483 SND_SOC_DAPM_DAC("DACL", NULL, SND_SOC_NOPM, 0, 0),
484 SND_SOC_DAPM_DAC("DACR", NULL, SND_SOC_NOPM, 0, 0),
486 SND_SOC_DAPM_OUTPUT("OUTL"),
487 SND_SOC_DAPM_OUTPUT("OUTR"),
490 static const struct snd_soc_dapm_route pcm512x_dapm_routes[] = {
491 { "DACL", NULL, "Playback" },
492 { "DACR", NULL, "Playback" },
494 { "OUTL", NULL, "DACL" },
495 { "OUTR", NULL, "DACR" },
498 static unsigned long pcm512x_pll_max(struct pcm512x_priv *pcm512x)
500 return 25000000 + 25000000 * pcm512x->overclock_pll / 100;
503 static unsigned long pcm512x_dsp_max(struct pcm512x_priv *pcm512x)
505 return 50000000 + 50000000 * pcm512x->overclock_dsp / 100;
508 static unsigned long pcm512x_dac_max(struct pcm512x_priv *pcm512x,
511 return rate + rate * pcm512x->overclock_dac / 100;
514 static unsigned long pcm512x_sck_max(struct pcm512x_priv *pcm512x)
516 if (!pcm512x->pll_out)
518 return pcm512x_pll_max(pcm512x);
521 static unsigned long pcm512x_ncp_target(struct pcm512x_priv *pcm512x,
522 unsigned long dac_rate)
525 * If the DAC is not actually overclocked, use the good old
528 if (dac_rate <= 6144000)
531 * ...but if the DAC is in fact overclocked, bump the NCP target
532 * rate to get the recommended dividers even when overclocking.
534 return pcm512x_dac_max(pcm512x, 1536000);
537 static const u32 pcm512x_dai_rates[] = {
538 8000, 11025, 16000, 22050, 32000, 44100, 48000, 64000,
539 88200, 96000, 176400, 192000, 384000,
542 static const struct snd_pcm_hw_constraint_list constraints_slave = {
543 .count = ARRAY_SIZE(pcm512x_dai_rates),
544 .list = pcm512x_dai_rates,
547 static int pcm512x_hw_rule_rate(struct snd_pcm_hw_params *params,
548 struct snd_pcm_hw_rule *rule)
550 struct pcm512x_priv *pcm512x = rule->private;
551 struct snd_interval ranges[2];
554 frame_size = snd_soc_params_to_frame_size(params);
558 switch (frame_size) {
560 /* No hole when the frame size is 32. */
564 /* There is only one hole in the range of supported
565 * rates, but it moves with the frame size.
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;
577 return snd_interval_ranges(hw_param_interval(params, rule->var),
578 ARRAY_SIZE(ranges), ranges, 0);
581 static int pcm512x_dai_startup_master(struct snd_pcm_substream *substream,
582 struct snd_soc_dai *dai)
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;
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);
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,
601 SNDRV_PCM_HW_PARAM_FRAME_BITS,
602 SNDRV_PCM_HW_PARAM_CHANNELS, -1);
604 constraints_no_pll = devm_kzalloc(dev, sizeof(*constraints_no_pll),
606 if (!constraints_no_pll)
608 constraints_no_pll->nrats = 1;
609 rats_no_pll = devm_kzalloc(dev, sizeof(*rats_no_pll), GFP_KERNEL);
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;
618 return snd_pcm_hw_constraint_ratnums(substream->runtime, 0,
619 SNDRV_PCM_HW_PARAM_RATE,
623 static int pcm512x_dai_startup_slave(struct snd_pcm_substream *substream,
624 struct snd_soc_dai *dai)
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;
631 if (IS_ERR(pcm512x->sclk)) {
632 dev_info(dev, "No SCLK, using BCLK: %ld\n",
633 PTR_ERR(pcm512x->sclk));
635 /* Disable reporting of missing SCLK as an error */
636 regmap_update_bits(regmap, PCM512x_ERROR_DETECT,
637 PCM512x_IDCH, PCM512x_IDCH);
639 /* Switch PLL input to BCLK */
640 regmap_update_bits(regmap, PCM512x_PLL_REF,
641 PCM512x_SREF, PCM512x_SREF_BCK);
644 return snd_pcm_hw_constraint_list(substream->runtime, 0,
645 SNDRV_PCM_HW_PARAM_RATE,
649 static int pcm512x_dai_startup(struct snd_pcm_substream *substream,
650 struct snd_soc_dai *dai)
652 struct snd_soc_component *component = dai->component;
653 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
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);
660 case SND_SOC_DAIFMT_CBS_CFS:
661 return pcm512x_dai_startup_slave(substream, dai);
668 static int pcm512x_set_bias_level(struct snd_soc_component *component,
669 enum snd_soc_bias_level level)
671 struct pcm512x_priv *pcm512x = dev_get_drvdata(component->dev);
675 case SND_SOC_BIAS_ON:
676 case SND_SOC_BIAS_PREPARE:
679 case SND_SOC_BIAS_STANDBY:
680 ret = regmap_update_bits(pcm512x->regmap, PCM512x_POWER,
683 dev_err(component->dev, "Failed to remove standby: %d\n",
689 case SND_SOC_BIAS_OFF:
690 ret = regmap_update_bits(pcm512x->regmap, PCM512x_POWER,
691 PCM512x_RQST, PCM512x_RQST);
693 dev_err(component->dev, "Failed to request standby: %d\n",
703 static unsigned long pcm512x_find_sck(struct snd_soc_dai *dai,
704 unsigned long bclk_rate)
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;
712 /* 64 MHz <= pll_rate <= 100 MHz, VREF mode */
713 /* 16 MHz <= sck_rate <= 25 MHz, VREF mode */
715 /* select sck_rate as a multiple of bclk_rate but still with
716 * as many factors of 2 as possible, as that makes it easier
717 * to find a fast DAC rate
719 pow2 = 1 << fls((pcm512x_pll_max(pcm512x) - 16000000) / bclk_rate);
720 for (; pow2; pow2 >>= 1) {
721 sck_rate = rounddown(pcm512x_pll_max(pcm512x),
723 if (sck_rate >= 16000000)
727 dev_err(dev, "Impossible to generate a suitable SCK\n");
731 dev_dbg(dev, "sck_rate %lu\n", sck_rate);
735 /* pll_rate = pllin_rate * R * J.D / P
740 * 64 MHz <= pll_rate <= 100 MHz
742 * 1 MHz <= pllin_rate / P <= 20 MHz
744 * 6.667 MHz <= pllin_rate / P <= 20 MHz
748 static int pcm512x_find_pll_coeff(struct snd_soc_dai *dai,
749 unsigned long pllin_rate,
750 unsigned long pll_rate)
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;
757 unsigned long K; /* 10000 * J.D */
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;
767 /* pllin_rate / P (or here, den) cannot be greater than 20 MHz */
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);
772 dev_dbg(dev, "num / den = %lu / %lu\n", num, den);
775 if (den <= 15 && num <= 16 * 63
776 && 1000000 <= pllin_rate / P && pllin_rate / P <= 20000000) {
777 /* Try the case with D = 0 */
779 /* factor 'num' into J and R, such that R <= 16 and J <= 63 */
780 for (R = 16; R; R--) {
784 if (J == 0 || J > 63)
787 dev_dbg(dev, "R * J / P = %d * %d / %d\n", R, J, P);
788 pcm512x->real_pll = pll_rate;
796 if (num > 0xffffffffUL / 10000)
799 /* Try to find an exact pll_rate using the D > 0 case */
800 common = gcd(10000 * num, den);
801 num = 10000 * num / common;
803 dev_dbg(dev, "num %lu den %lu common %lu\n", num, den, common);
805 for (P = den; P <= 15; P++) {
806 if (pllin_rate / P < 6667000 || 200000000 < pllin_rate / P)
811 /* J == 12 is ok if D == 0 */
812 if (K < 40000 || K > 120000)
817 dev_dbg(dev, "J.D / P = %d.%04d / %d\n", J, D, P);
818 pcm512x->real_pll = pll_rate;
822 /* Fall back to an approximate pll_rate */
825 /* find smallest possible P */
826 P = DIV_ROUND_UP(pllin_rate, 20000000);
830 dev_err(dev, "Need a slower clock as pll-input\n");
833 if (pllin_rate / P < 6667000) {
834 dev_err(dev, "Need a faster clock as pll-input\n");
837 K = DIV_ROUND_CLOSEST_ULL(10000ULL * pll_rate * P, pllin_rate);
840 /* J == 12 is ok if D == 0 */
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);
856 static unsigned long pcm512x_pllin_dac_rate(struct snd_soc_dai *dai,
857 unsigned long osr_rate,
858 unsigned long pllin_rate)
860 struct snd_soc_component *component = dai->component;
861 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
862 unsigned long dac_rate;
864 if (!pcm512x->pll_out)
865 return 0; /* no PLL to bypass, force SCK as DAC input */
867 if (pllin_rate % osr_rate)
868 return 0; /* futile, quit early */
870 /* run DAC no faster than 6144000 Hz */
871 for (dac_rate = rounddown(pcm512x_dac_max(pcm512x, 6144000), osr_rate);
873 dac_rate -= osr_rate) {
875 if (pllin_rate / dac_rate > 128)
876 return 0; /* DAC divider would be too big */
878 if (!(pllin_rate % dac_rate))
881 dac_rate -= osr_rate;
887 static int pcm512x_set_dividers(struct snd_soc_dai *dai,
888 struct snd_pcm_hw_params *params)
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;
905 unsigned long dac_rate;
913 if (pcm512x->bclk_ratio > 0) {
914 lrclk_div = pcm512x->bclk_ratio;
916 lrclk_div = snd_soc_params_to_frame_size(params);
918 if (lrclk_div == 0) {
919 dev_err(dev, "No LRCLK?\n");
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);
931 ret = snd_soc_params_to_bclk(params);
933 dev_err(dev, "Failed to find suitable BCLK: %d\n", ret);
937 dev_err(dev, "No BCLK?\n");
942 pllin_rate = clk_get_rate(pcm512x->sclk);
944 sck_rate = pcm512x_find_sck(dai, bclk_rate);
947 pll_rate = 4 * sck_rate;
949 ret = pcm512x_find_pll_coeff(dai, pllin_rate, pll_rate);
953 ret = regmap_write(pcm512x->regmap,
954 PCM512x_PLL_COEFF_0, pcm512x->pll_p - 1);
956 dev_err(dev, "Failed to write PLL P: %d\n", ret);
960 ret = regmap_write(pcm512x->regmap,
961 PCM512x_PLL_COEFF_1, pcm512x->pll_j);
963 dev_err(dev, "Failed to write PLL J: %d\n", ret);
967 ret = regmap_write(pcm512x->regmap,
968 PCM512x_PLL_COEFF_2, pcm512x->pll_d >> 8);
970 dev_err(dev, "Failed to write PLL D msb: %d\n", ret);
974 ret = regmap_write(pcm512x->regmap,
975 PCM512x_PLL_COEFF_3, pcm512x->pll_d & 0xff);
977 dev_err(dev, "Failed to write PLL D lsb: %d\n", ret);
981 ret = regmap_write(pcm512x->regmap,
982 PCM512x_PLL_COEFF_4, pcm512x->pll_r - 1);
984 dev_err(dev, "Failed to write PLL R: %d\n", ret);
988 mck_rate = pcm512x->real_pll;
990 bclk_div = DIV_ROUND_CLOSEST(sck_rate, bclk_rate);
993 if (bclk_div > 128) {
994 dev_err(dev, "Failed to find BCLK divider\n");
998 /* the actual rate */
999 sample_rate = sck_rate / bclk_div / lrclk_div;
1000 osr_rate = 16 * sample_rate;
1002 /* run DSP no faster than 50 MHz */
1003 dsp_div = mck_rate > pcm512x_dsp_max(pcm512x) ? 2 : 1;
1005 dac_rate = pcm512x_pllin_dac_rate(dai, osr_rate, pllin_rate);
1007 /* the desired clock rate is "compatible" with the pll input
1008 * clock, so use that clock as dac input instead of the pll
1009 * output clock since the pll will introduce jitter and thus
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);
1016 dev_err(component->dev,
1017 "Failed to set gpio as dacref: %d\n", ret);
1021 gpio = PCM512x_GREF_GPIO1 + pcm512x->pll_in - 1;
1022 ret = regmap_update_bits(pcm512x->regmap, PCM512x_GPIO_DACIN,
1023 PCM512x_GREF, gpio);
1025 dev_err(component->dev,
1026 "Failed to set gpio %d as dacin: %d\n",
1027 pcm512x->pll_in, ret);
1031 dacsrc_rate = pllin_rate;
1033 /* run DAC no faster than 6144000 Hz */
1034 unsigned long dac_mul = pcm512x_dac_max(pcm512x, 6144000)
1036 unsigned long sck_mul = sck_rate / osr_rate;
1038 for (; dac_mul; dac_mul--) {
1039 if (!(sck_mul % dac_mul))
1043 dev_err(dev, "Failed to find DAC rate\n");
1047 dac_rate = dac_mul * osr_rate;
1048 dev_dbg(dev, "dac_rate %lu sample_rate %lu\n",
1049 dac_rate, sample_rate);
1051 ret = regmap_update_bits(pcm512x->regmap, PCM512x_DAC_REF,
1052 PCM512x_SDAC, PCM512x_SDAC_SCK);
1054 dev_err(component->dev,
1055 "Failed to set sck as dacref: %d\n", ret);
1059 dacsrc_rate = sck_rate;
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");
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");
1073 dac_rate = dacsrc_rate / dac_div;
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 /* run NCP no faster than 2048000 Hz, but why? */
1079 ncp_div = DIV_ROUND_UP(dac_rate, 2048000);
1080 if (ncp_div > 128) {
1081 dev_err(dev, "Failed to find NCP divider\n");
1086 idac = mck_rate / (dsp_div * sample_rate);
1088 ret = regmap_write(pcm512x->regmap, PCM512x_DSP_CLKDIV, dsp_div - 1);
1090 dev_err(dev, "Failed to write DSP divider: %d\n", ret);
1094 ret = regmap_write(pcm512x->regmap, PCM512x_DAC_CLKDIV, dac_div - 1);
1096 dev_err(dev, "Failed to write DAC divider: %d\n", ret);
1100 ret = regmap_write(pcm512x->regmap, PCM512x_NCP_CLKDIV, ncp_div - 1);
1102 dev_err(dev, "Failed to write NCP divider: %d\n", ret);
1106 ret = regmap_write(pcm512x->regmap, PCM512x_OSR_CLKDIV, osr_div - 1);
1108 dev_err(dev, "Failed to write OSR divider: %d\n", ret);
1112 ret = regmap_write(pcm512x->regmap,
1113 PCM512x_MASTER_CLKDIV_1, bclk_div - 1);
1115 dev_err(dev, "Failed to write BCLK divider: %d\n", ret);
1119 ret = regmap_write(pcm512x->regmap,
1120 PCM512x_MASTER_CLKDIV_2, lrclk_div - 1);
1122 dev_err(dev, "Failed to write LRCLK divider: %d\n", ret);
1126 ret = regmap_write(pcm512x->regmap, PCM512x_IDAC_1, idac >> 8);
1128 dev_err(dev, "Failed to write IDAC msb divider: %d\n", ret);
1132 ret = regmap_write(pcm512x->regmap, PCM512x_IDAC_2, idac & 0xff);
1134 dev_err(dev, "Failed to write IDAC lsb divider: %d\n", ret);
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;
1145 fssp = PCM512x_FSSP_384KHZ;
1146 ret = regmap_update_bits(pcm512x->regmap, PCM512x_FS_SPEED_MODE,
1147 PCM512x_FSSP, fssp);
1149 dev_err(component->dev, "Failed to set fs speed: %d\n", ret);
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);
1165 static int pcm512x_hw_params(struct snd_pcm_substream *substream,
1166 struct snd_pcm_hw_params *params,
1167 struct snd_soc_dai *dai)
1169 struct snd_soc_component *component = dai->component;
1170 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
1175 dev_dbg(component->dev, "hw_params %u Hz, %u channels\n",
1176 params_rate(params),
1177 params_channels(params));
1179 switch (params_width(params)) {
1181 alen = PCM512x_ALEN_16;
1184 alen = PCM512x_ALEN_20;
1187 alen = PCM512x_ALEN_24;
1190 alen = PCM512x_ALEN_32;
1193 dev_err(component->dev, "Bad frame size: %d\n",
1194 params_width(params));
1198 ret = regmap_update_bits(pcm512x->regmap, PCM512x_I2S_1,
1199 PCM512x_ALEN, alen);
1201 dev_err(component->dev, "Failed to set frame size: %d\n", ret);
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,
1210 dev_err(component->dev,
1211 "Failed to enable clock divider autoset: %d\n",
1218 if (pcm512x->pll_out) {
1219 ret = regmap_write(pcm512x->regmap, PCM512x_FLEX_A, 0x11);
1221 dev_err(component->dev, "Failed to set FLEX_A: %d\n", ret);
1225 ret = regmap_write(pcm512x->regmap, PCM512x_FLEX_B, 0xff);
1227 dev_err(component->dev, "Failed to set FLEX_B: %d\n", ret);
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
1236 PCM512x_IDFS | PCM512x_IDBK
1237 | PCM512x_IDSK | PCM512x_IDCH
1240 dev_err(component->dev,
1241 "Failed to ignore auto-clock failures: %d\n",
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
1251 PCM512x_IDFS | PCM512x_IDBK
1252 | PCM512x_IDSK | PCM512x_IDCH
1253 | PCM512x_DCAS | PCM512x_IPLK);
1255 dev_err(component->dev,
1256 "Failed to ignore auto-clock failures: %d\n",
1261 ret = regmap_update_bits(pcm512x->regmap, PCM512x_PLL_EN,
1264 dev_err(component->dev, "Failed to disable pll: %d\n", ret);
1269 ret = pcm512x_set_dividers(dai, params);
1273 if (pcm512x->pll_out) {
1274 ret = regmap_update_bits(pcm512x->regmap, PCM512x_PLL_REF,
1275 PCM512x_SREF, PCM512x_SREF_GPIO);
1277 dev_err(component->dev,
1278 "Failed to set gpio as pllref: %d\n", ret);
1282 gpio = PCM512x_GREF_GPIO1 + pcm512x->pll_in - 1;
1283 ret = regmap_update_bits(pcm512x->regmap, PCM512x_GPIO_PLLIN,
1284 PCM512x_GREF, gpio);
1286 dev_err(component->dev,
1287 "Failed to set gpio %d as pllin: %d\n",
1288 pcm512x->pll_in, ret);
1292 ret = regmap_update_bits(pcm512x->regmap, PCM512x_PLL_EN,
1293 PCM512x_PLLE, PCM512x_PLLE);
1295 dev_err(component->dev, "Failed to enable pll: %d\n", ret);
1299 gpio = PCM512x_G1OE << (pcm512x->pll_out - 1);
1300 ret = regmap_update_bits(pcm512x->regmap, PCM512x_GPIO_EN,
1303 dev_err(component->dev, "Failed to enable gpio %d: %d\n",
1304 pcm512x->pll_out, ret);
1308 gpio = PCM512x_GPIO_OUTPUT_1 + pcm512x->pll_out - 1;
1309 ret = regmap_update_bits(pcm512x->regmap, gpio,
1310 PCM512x_GxSL, PCM512x_GxSL_PLLCK);
1312 dev_err(component->dev, "Failed to output pll on %d: %d\n",
1313 ret, pcm512x->pll_out);
1318 ret = regmap_update_bits(pcm512x->regmap, PCM512x_SYNCHRONIZE,
1319 PCM512x_RQSY, PCM512x_RQSY_HALT);
1321 dev_err(component->dev, "Failed to halt clocks: %d\n", ret);
1325 ret = regmap_update_bits(pcm512x->regmap, PCM512x_SYNCHRONIZE,
1326 PCM512x_RQSY, PCM512x_RQSY_RESUME);
1328 dev_err(component->dev, "Failed to resume clocks: %d\n", ret);
1336 static int pcm512x_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
1338 struct snd_soc_component *component = dai->component;
1339 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
1346 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1347 case SND_SOC_DAIFMT_CBS_CFS:
1351 case SND_SOC_DAIFMT_CBM_CFM:
1352 clock_output = PCM512x_BCKO | PCM512x_LRKO;
1353 master_mode = PCM512x_RLRK | PCM512x_RBCK;
1355 case SND_SOC_DAIFMT_CBM_CFS:
1356 clock_output = PCM512x_BCKO;
1357 master_mode = PCM512x_RBCK;
1363 ret = regmap_update_bits(pcm512x->regmap, PCM512x_BCLK_LRCLK_CFG,
1364 PCM512x_BCKP | PCM512x_BCKO | PCM512x_LRKO,
1367 dev_err(component->dev, "Failed to enable clock output: %d\n", ret);
1371 ret = regmap_update_bits(pcm512x->regmap, PCM512x_MASTER_MODE,
1372 PCM512x_RLRK | PCM512x_RBCK,
1375 dev_err(component->dev, "Failed to enable master mode: %d\n", ret);
1379 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1380 case SND_SOC_DAIFMT_I2S:
1381 afmt = PCM512x_AFMT_I2S;
1383 case SND_SOC_DAIFMT_RIGHT_J:
1384 afmt = PCM512x_AFMT_RTJ;
1386 case SND_SOC_DAIFMT_LEFT_J:
1387 afmt = PCM512x_AFMT_LTJ;
1389 case SND_SOC_DAIFMT_DSP_A:
1392 case SND_SOC_DAIFMT_DSP_B:
1393 afmt = PCM512x_AFMT_DSP;
1396 dev_err(component->dev, "unsupported DAI format: 0x%x\n",
1401 ret = regmap_update_bits(pcm512x->regmap, PCM512x_I2S_1,
1402 PCM512x_AFMT, afmt);
1404 dev_err(component->dev, "Failed to set data format: %d\n", ret);
1408 ret = regmap_update_bits(pcm512x->regmap, PCM512x_I2S_2,
1411 dev_err(component->dev, "Failed to set data offset: %d\n", ret);
1420 static int pcm512x_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
1422 struct snd_soc_component *component = dai->component;
1423 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
1428 pcm512x->bclk_ratio = ratio;
1433 static int pcm512x_mute(struct snd_soc_dai *dai, int mute, int direction)
1435 struct snd_soc_component *component = dai->component;
1436 struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
1438 unsigned int mute_det;
1440 mutex_lock(&pcm512x->mutex);
1443 pcm512x->mute |= 0x1;
1444 ret = regmap_update_bits(pcm512x->regmap, PCM512x_MUTE,
1445 PCM512x_RQML | PCM512x_RQMR,
1446 PCM512x_RQML | PCM512x_RQMR);
1448 dev_err(component->dev,
1449 "Failed to set digital mute: %d\n", ret);
1453 regmap_read_poll_timeout(pcm512x->regmap,
1454 PCM512x_ANALOG_MUTE_DET,
1455 mute_det, (mute_det & 0x3) == 0,
1458 pcm512x->mute &= ~0x1;
1459 ret = pcm512x_update_mute(pcm512x);
1461 dev_err(component->dev,
1462 "Failed to update digital mute: %d\n", ret);
1466 regmap_read_poll_timeout(pcm512x->regmap,
1467 PCM512x_ANALOG_MUTE_DET,
1470 == ((~pcm512x->mute >> 1) & 0x3),
1475 mutex_unlock(&pcm512x->mutex);
1480 static 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,
1489 static struct snd_soc_dai_driver pcm512x_dai = {
1490 .name = "pcm512x-hifi",
1492 .stream_name = "Playback",
1495 .rates = SNDRV_PCM_RATE_CONTINUOUS,
1498 .formats = SNDRV_PCM_FMTBIT_S16_LE |
1499 SNDRV_PCM_FMTBIT_S24_LE |
1500 SNDRV_PCM_FMTBIT_S32_LE
1502 .ops = &pcm512x_dai_ops,
1505 static 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,
1515 .non_legacy_dai_naming = 1,
1518 static 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,
1526 const struct regmap_config pcm512x_regmap = {
1530 .readable_reg = pcm512x_readable,
1531 .volatile_reg = pcm512x_volatile,
1533 .ranges = &pcm512x_range,
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,
1541 EXPORT_SYMBOL_GPL(pcm512x_regmap);
1543 int pcm512x_probe(struct device *dev, struct regmap *regmap)
1545 struct pcm512x_priv *pcm512x;
1548 pcm512x = devm_kzalloc(dev, sizeof(struct pcm512x_priv), GFP_KERNEL);
1552 mutex_init(&pcm512x->mutex);
1554 dev_set_drvdata(dev, pcm512x);
1555 pcm512x->regmap = regmap;
1557 for (i = 0; i < ARRAY_SIZE(pcm512x->supplies); i++)
1558 pcm512x->supplies[i].supply = pcm512x_supply_names[i];
1560 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(pcm512x->supplies),
1563 dev_err(dev, "Failed to get supplies: %d\n", ret);
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;
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]);
1577 "Failed to register regulator notifier: %d\n",
1582 ret = regulator_bulk_enable(ARRAY_SIZE(pcm512x->supplies),
1585 dev_err(dev, "Failed to enable supplies: %d\n", ret);
1589 /* Reset the device, verifying I/O in the process for I2C */
1590 ret = regmap_write(regmap, PCM512x_RESET,
1591 PCM512x_RSTM | PCM512x_RSTR);
1593 dev_err(dev, "Failed to reset device: %d\n", ret);
1597 ret = regmap_write(regmap, PCM512x_RESET, 0);
1599 dev_err(dev, "Failed to reset device: %d\n", ret);
1603 pcm512x->sclk = devm_clk_get(dev, NULL);
1604 if (PTR_ERR(pcm512x->sclk) == -EPROBE_DEFER) {
1605 ret = -EPROBE_DEFER;
1608 if (!IS_ERR(pcm512x->sclk)) {
1609 ret = clk_prepare_enable(pcm512x->sclk);
1611 dev_err(dev, "Failed to enable SCLK: %d\n", ret);
1616 /* Default to standby mode */
1617 ret = regmap_update_bits(pcm512x->regmap, PCM512x_POWER,
1618 PCM512x_RQST, PCM512x_RQST);
1620 dev_err(dev, "Failed to request standby: %d\n",
1625 pm_runtime_set_active(dev);
1626 pm_runtime_enable(dev);
1627 pm_runtime_idle(dev);
1631 const struct device_node *np = dev->of_node;
1634 if (of_property_read_u32(np, "pll-in", &val) >= 0) {
1636 dev_err(dev, "Invalid pll-in\n");
1640 pcm512x->pll_in = val;
1643 if (of_property_read_u32(np, "pll-out", &val) >= 0) {
1645 dev_err(dev, "Invalid pll-out\n");
1649 pcm512x->pll_out = val;
1652 if (!pcm512x->pll_in != !pcm512x->pll_out) {
1654 "Error: both pll-in and pll-out, or none\n");
1658 if (pcm512x->pll_in && pcm512x->pll_in == pcm512x->pll_out) {
1659 dev_err(dev, "Error: pll-in == pll-out\n");
1666 ret = devm_snd_soc_register_component(dev, &pcm512x_component_driver,
1669 dev_err(dev, "Failed to register CODEC: %d\n", ret);
1676 pm_runtime_disable(dev);
1678 if (!IS_ERR(pcm512x->sclk))
1679 clk_disable_unprepare(pcm512x->sclk);
1681 regulator_bulk_disable(ARRAY_SIZE(pcm512x->supplies),
1685 EXPORT_SYMBOL_GPL(pcm512x_probe);
1687 void pcm512x_remove(struct device *dev)
1689 struct pcm512x_priv *pcm512x = dev_get_drvdata(dev);
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),
1697 EXPORT_SYMBOL_GPL(pcm512x_remove);
1700 static int pcm512x_suspend(struct device *dev)
1702 struct pcm512x_priv *pcm512x = dev_get_drvdata(dev);
1705 ret = regmap_update_bits(pcm512x->regmap, PCM512x_POWER,
1706 PCM512x_RQPD, PCM512x_RQPD);
1708 dev_err(dev, "Failed to request power down: %d\n", ret);
1712 ret = regulator_bulk_disable(ARRAY_SIZE(pcm512x->supplies),
1715 dev_err(dev, "Failed to disable supplies: %d\n", ret);
1719 if (!IS_ERR(pcm512x->sclk))
1720 clk_disable_unprepare(pcm512x->sclk);
1725 static int pcm512x_resume(struct device *dev)
1727 struct pcm512x_priv *pcm512x = dev_get_drvdata(dev);
1730 if (!IS_ERR(pcm512x->sclk)) {
1731 ret = clk_prepare_enable(pcm512x->sclk);
1733 dev_err(dev, "Failed to enable SCLK: %d\n", ret);
1738 ret = regulator_bulk_enable(ARRAY_SIZE(pcm512x->supplies),
1741 dev_err(dev, "Failed to enable supplies: %d\n", ret);
1745 regcache_cache_only(pcm512x->regmap, false);
1746 ret = regcache_sync(pcm512x->regmap);
1748 dev_err(dev, "Failed to sync cache: %d\n", ret);
1752 ret = regmap_update_bits(pcm512x->regmap, PCM512x_POWER,
1755 dev_err(dev, "Failed to remove power down: %d\n", ret);
1763 const struct dev_pm_ops pcm512x_pm_ops = {
1764 SET_RUNTIME_PM_OPS(pcm512x_suspend, pcm512x_resume, NULL)
1766 EXPORT_SYMBOL_GPL(pcm512x_pm_ops);
1768 MODULE_DESCRIPTION("ASoC PCM512x codec driver");
1769 MODULE_AUTHOR("Mark Brown <broonie@kernel.org>");
1770 MODULE_LICENSE("GPL v2");