1 // SPDX-License-Identifier: GPL-2.0-only
3 * wm2000.c -- WM2000 ALSA Soc Audio driver
5 * Copyright 2008-2011 Wolfson Microelectronics PLC.
7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 #include <linux/module.h>
12 #include <linux/moduleparam.h>
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/firmware.h>
16 #include <linux/clk.h>
17 #include <linux/delay.h>
19 #include <linux/i2c.h>
20 #include <linux/regmap.h>
21 #include <linux/debugfs.h>
22 #include <linux/regulator/consumer.h>
23 #include <linux/slab.h>
24 #include <sound/core.h>
25 #include <sound/pcm.h>
26 #include <sound/pcm_params.h>
27 #include <sound/soc.h>
28 #include <sound/initval.h>
29 #include <sound/tlv.h>
31 #include <sound/wm2000.h>
35 #define WM2000_NUM_SUPPLIES 3
37 static const char *wm2000_supplies[WM2000_NUM_SUPPLIES] = {
43 enum wm2000_anc_mode {
51 struct i2c_client *i2c;
52 struct regmap *regmap;
55 struct regulator_bulk_data supplies[WM2000_NUM_SUPPLIES];
57 enum wm2000_anc_mode anc_mode;
59 unsigned int anc_active:1;
60 unsigned int anc_eng_ena:1;
61 unsigned int spk_ena:1;
63 unsigned int speech_clarity:1;
65 int anc_download_size;
71 static int wm2000_write(struct i2c_client *i2c, unsigned int reg,
74 struct wm2000_priv *wm2000 = i2c_get_clientdata(i2c);
75 return regmap_write(wm2000->regmap, reg, value);
78 static void wm2000_reset(struct wm2000_priv *wm2000)
80 struct i2c_client *i2c = wm2000->i2c;
82 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_CLR);
83 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR);
84 wm2000_write(i2c, WM2000_REG_ID1, 0);
86 wm2000->anc_mode = ANC_OFF;
89 static int wm2000_poll_bit(struct i2c_client *i2c,
90 unsigned int reg, u8 mask)
92 struct wm2000_priv *wm2000 = i2c_get_clientdata(i2c);
96 regmap_read(wm2000->regmap, reg, &val);
98 while (!(val & mask) && --timeout) {
100 regmap_read(wm2000->regmap, reg, &val);
109 static int wm2000_power_up(struct i2c_client *i2c, int analogue)
111 struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
116 if (WARN_ON(wm2000->anc_mode != ANC_OFF))
119 dev_dbg(&i2c->dev, "Beginning power up\n");
121 ret = regulator_bulk_enable(WM2000_NUM_SUPPLIES, wm2000->supplies);
123 dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
127 rate = clk_get_rate(wm2000->mclk);
128 if (rate <= 13500000) {
129 dev_dbg(&i2c->dev, "Disabling MCLK divider\n");
130 wm2000_write(i2c, WM2000_REG_SYS_CTL2,
131 WM2000_MCLK_DIV2_ENA_CLR);
133 dev_dbg(&i2c->dev, "Enabling MCLK divider\n");
134 wm2000_write(i2c, WM2000_REG_SYS_CTL2,
135 WM2000_MCLK_DIV2_ENA_SET);
138 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_CLR);
139 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_SET);
141 /* Wait for ANC engine to become ready */
142 if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT,
143 WM2000_ANC_ENG_IDLE)) {
144 dev_err(&i2c->dev, "ANC engine failed to reset\n");
145 regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
149 if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
150 WM2000_STATUS_BOOT_COMPLETE)) {
151 dev_err(&i2c->dev, "ANC engine failed to initialise\n");
152 regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
156 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET);
158 /* Open code download of the data since it is the only bulk
160 dev_dbg(&i2c->dev, "Downloading %d bytes\n",
161 wm2000->anc_download_size - 2);
163 ret = i2c_master_send(i2c, wm2000->anc_download,
164 wm2000->anc_download_size);
166 dev_err(&i2c->dev, "i2c_transfer() failed: %d\n", ret);
167 regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
170 if (ret != wm2000->anc_download_size) {
171 dev_err(&i2c->dev, "i2c_transfer() failed, %d != %d\n",
172 ret, wm2000->anc_download_size);
173 regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
177 dev_dbg(&i2c->dev, "Download complete\n");
180 wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, 248 / 4);
182 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
183 WM2000_MODE_ANA_SEQ_INCLUDE |
184 WM2000_MODE_MOUSE_ENABLE |
185 WM2000_MODE_THERMAL_ENABLE);
187 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
188 WM2000_MODE_MOUSE_ENABLE |
189 WM2000_MODE_THERMAL_ENABLE);
192 ret = regmap_read(wm2000->regmap, WM2000_REG_SPEECH_CLARITY, &val);
194 dev_err(&i2c->dev, "Unable to read Speech Clarity: %d\n", ret);
195 regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
198 if (wm2000->speech_clarity)
199 val |= WM2000_SPEECH_CLARITY;
201 val &= ~WM2000_SPEECH_CLARITY;
202 wm2000_write(i2c, WM2000_REG_SPEECH_CLARITY, val);
204 wm2000_write(i2c, WM2000_REG_SYS_START0, 0x33);
205 wm2000_write(i2c, WM2000_REG_SYS_START1, 0x02);
207 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR);
209 if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
210 WM2000_STATUS_MOUSE_ACTIVE)) {
211 dev_err(&i2c->dev, "Timed out waiting for device\n");
212 regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
216 dev_dbg(&i2c->dev, "ANC active\n");
218 dev_dbg(&i2c->dev, "Analogue active\n");
219 wm2000->anc_mode = ANC_ACTIVE;
224 static int wm2000_power_down(struct i2c_client *i2c, int analogue)
226 struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
229 wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, 248 / 4);
230 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
231 WM2000_MODE_ANA_SEQ_INCLUDE |
232 WM2000_MODE_POWER_DOWN);
234 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
235 WM2000_MODE_POWER_DOWN);
238 if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
239 WM2000_STATUS_POWER_DOWN_COMPLETE)) {
240 dev_err(&i2c->dev, "Timeout waiting for ANC power down\n");
244 if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT,
245 WM2000_ANC_ENG_IDLE)) {
246 dev_err(&i2c->dev, "Timeout waiting for ANC engine idle\n");
250 regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
252 dev_dbg(&i2c->dev, "powered off\n");
253 wm2000->anc_mode = ANC_OFF;
258 static int wm2000_enter_bypass(struct i2c_client *i2c, int analogue)
260 struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
262 if (WARN_ON(wm2000->anc_mode != ANC_ACTIVE))
266 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
267 WM2000_MODE_ANA_SEQ_INCLUDE |
268 WM2000_MODE_THERMAL_ENABLE |
269 WM2000_MODE_BYPASS_ENTRY);
271 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
272 WM2000_MODE_THERMAL_ENABLE |
273 WM2000_MODE_BYPASS_ENTRY);
276 if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
277 WM2000_STATUS_ANC_DISABLED)) {
278 dev_err(&i2c->dev, "Timeout waiting for ANC disable\n");
282 if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT,
283 WM2000_ANC_ENG_IDLE)) {
284 dev_err(&i2c->dev, "Timeout waiting for ANC engine idle\n");
288 wm2000_write(i2c, WM2000_REG_SYS_CTL1, WM2000_SYS_STBY);
289 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR);
291 wm2000->anc_mode = ANC_BYPASS;
292 dev_dbg(&i2c->dev, "bypass enabled\n");
297 static int wm2000_exit_bypass(struct i2c_client *i2c, int analogue)
299 struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
301 if (WARN_ON(wm2000->anc_mode != ANC_BYPASS))
304 wm2000_write(i2c, WM2000_REG_SYS_CTL1, 0);
307 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
308 WM2000_MODE_ANA_SEQ_INCLUDE |
309 WM2000_MODE_MOUSE_ENABLE |
310 WM2000_MODE_THERMAL_ENABLE);
312 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
313 WM2000_MODE_MOUSE_ENABLE |
314 WM2000_MODE_THERMAL_ENABLE);
317 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET);
318 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR);
320 if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
321 WM2000_STATUS_MOUSE_ACTIVE)) {
322 dev_err(&i2c->dev, "Timed out waiting for MOUSE\n");
326 wm2000->anc_mode = ANC_ACTIVE;
327 dev_dbg(&i2c->dev, "MOUSE active\n");
332 static int wm2000_enter_standby(struct i2c_client *i2c, int analogue)
334 struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
336 if (WARN_ON(wm2000->anc_mode != ANC_ACTIVE))
340 wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, 248 / 4);
342 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
343 WM2000_MODE_ANA_SEQ_INCLUDE |
344 WM2000_MODE_THERMAL_ENABLE |
345 WM2000_MODE_STANDBY_ENTRY);
347 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
348 WM2000_MODE_THERMAL_ENABLE |
349 WM2000_MODE_STANDBY_ENTRY);
352 if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
353 WM2000_STATUS_ANC_DISABLED)) {
355 "Timed out waiting for ANC disable after 1ms\n");
359 if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, WM2000_ANC_ENG_IDLE)) {
361 "Timed out waiting for standby\n");
365 wm2000_write(i2c, WM2000_REG_SYS_CTL1, WM2000_SYS_STBY);
366 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR);
368 wm2000->anc_mode = ANC_STANDBY;
369 dev_dbg(&i2c->dev, "standby\n");
371 dev_dbg(&i2c->dev, "Analogue disabled\n");
376 static int wm2000_exit_standby(struct i2c_client *i2c, int analogue)
378 struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev);
380 if (WARN_ON(wm2000->anc_mode != ANC_STANDBY))
383 wm2000_write(i2c, WM2000_REG_SYS_CTL1, 0);
386 wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, 248 / 4);
388 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
389 WM2000_MODE_ANA_SEQ_INCLUDE |
390 WM2000_MODE_THERMAL_ENABLE |
391 WM2000_MODE_MOUSE_ENABLE);
393 wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL,
394 WM2000_MODE_THERMAL_ENABLE |
395 WM2000_MODE_MOUSE_ENABLE);
398 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET);
399 wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR);
401 if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS,
402 WM2000_STATUS_MOUSE_ACTIVE)) {
403 dev_err(&i2c->dev, "Timed out waiting for MOUSE\n");
407 wm2000->anc_mode = ANC_ACTIVE;
408 dev_dbg(&i2c->dev, "MOUSE active\n");
410 dev_dbg(&i2c->dev, "Analogue enabled\n");
415 typedef int (*wm2000_mode_fn)(struct i2c_client *i2c, int analogue);
418 enum wm2000_anc_mode source;
419 enum wm2000_anc_mode dest;
421 wm2000_mode_fn step[2];
422 } anc_transitions[] = {
436 wm2000_enter_standby,
449 .source = ANC_ACTIVE,
457 .source = ANC_ACTIVE,
461 wm2000_enter_standby,
465 .source = ANC_ACTIVE,
473 .source = ANC_BYPASS,
481 .source = ANC_BYPASS,
486 wm2000_enter_standby,
490 .source = ANC_BYPASS,
498 .source = ANC_STANDBY,
506 .source = ANC_STANDBY,
515 .source = ANC_STANDBY,
524 static int wm2000_anc_transition(struct wm2000_priv *wm2000,
525 enum wm2000_anc_mode mode)
527 struct i2c_client *i2c = wm2000->i2c;
531 if (wm2000->anc_mode == mode)
534 for (i = 0; i < ARRAY_SIZE(anc_transitions); i++)
535 if (anc_transitions[i].source == wm2000->anc_mode &&
536 anc_transitions[i].dest == mode)
538 if (i == ARRAY_SIZE(anc_transitions)) {
539 dev_err(&i2c->dev, "No transition for %d->%d\n",
540 wm2000->anc_mode, mode);
544 /* Maintain clock while active */
545 if (anc_transitions[i].source == ANC_OFF) {
546 ret = clk_prepare_enable(wm2000->mclk);
548 dev_err(&i2c->dev, "Failed to enable MCLK: %d\n", ret);
553 for (j = 0; j < ARRAY_SIZE(anc_transitions[j].step); j++) {
554 if (!anc_transitions[i].step[j])
556 ret = anc_transitions[i].step[j](i2c,
557 anc_transitions[i].analogue);
562 if (anc_transitions[i].dest == ANC_OFF)
563 clk_disable_unprepare(wm2000->mclk);
568 static int wm2000_anc_set_mode(struct wm2000_priv *wm2000)
570 struct i2c_client *i2c = wm2000->i2c;
571 enum wm2000_anc_mode mode;
573 if (wm2000->anc_eng_ena && wm2000->spk_ena)
574 if (wm2000->anc_active)
581 dev_dbg(&i2c->dev, "Set mode %d (enabled %d, mute %d, active %d)\n",
582 mode, wm2000->anc_eng_ena, !wm2000->spk_ena,
585 return wm2000_anc_transition(wm2000, mode);
588 static int wm2000_anc_mode_get(struct snd_kcontrol *kcontrol,
589 struct snd_ctl_elem_value *ucontrol)
591 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
592 struct wm2000_priv *wm2000 = dev_get_drvdata(component->dev);
594 ucontrol->value.integer.value[0] = wm2000->anc_active;
599 static int wm2000_anc_mode_put(struct snd_kcontrol *kcontrol,
600 struct snd_ctl_elem_value *ucontrol)
602 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
603 struct wm2000_priv *wm2000 = dev_get_drvdata(component->dev);
604 unsigned int anc_active = ucontrol->value.integer.value[0];
610 mutex_lock(&wm2000->lock);
612 wm2000->anc_active = anc_active;
614 ret = wm2000_anc_set_mode(wm2000);
616 mutex_unlock(&wm2000->lock);
621 static int wm2000_speaker_get(struct snd_kcontrol *kcontrol,
622 struct snd_ctl_elem_value *ucontrol)
624 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
625 struct wm2000_priv *wm2000 = dev_get_drvdata(component->dev);
627 ucontrol->value.integer.value[0] = wm2000->spk_ena;
632 static int wm2000_speaker_put(struct snd_kcontrol *kcontrol,
633 struct snd_ctl_elem_value *ucontrol)
635 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
636 struct wm2000_priv *wm2000 = dev_get_drvdata(component->dev);
637 unsigned int val = ucontrol->value.integer.value[0];
643 mutex_lock(&wm2000->lock);
645 wm2000->spk_ena = val;
647 ret = wm2000_anc_set_mode(wm2000);
649 mutex_unlock(&wm2000->lock);
654 static const struct snd_kcontrol_new wm2000_controls[] = {
655 SOC_SINGLE("ANC Volume", WM2000_REG_ANC_GAIN_CTRL, 0, 255, 0),
656 SOC_SINGLE_BOOL_EXT("WM2000 ANC Switch", 0,
658 wm2000_anc_mode_put),
659 SOC_SINGLE_BOOL_EXT("WM2000 Switch", 0,
664 static int wm2000_anc_power_event(struct snd_soc_dapm_widget *w,
665 struct snd_kcontrol *kcontrol, int event)
667 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
668 struct wm2000_priv *wm2000 = dev_get_drvdata(component->dev);
671 mutex_lock(&wm2000->lock);
673 if (SND_SOC_DAPM_EVENT_ON(event))
674 wm2000->anc_eng_ena = 1;
676 if (SND_SOC_DAPM_EVENT_OFF(event))
677 wm2000->anc_eng_ena = 0;
679 ret = wm2000_anc_set_mode(wm2000);
681 mutex_unlock(&wm2000->lock);
686 static const struct snd_soc_dapm_widget wm2000_dapm_widgets[] = {
687 /* Externally visible pins */
688 SND_SOC_DAPM_OUTPUT("SPKN"),
689 SND_SOC_DAPM_OUTPUT("SPKP"),
691 SND_SOC_DAPM_INPUT("LINN"),
692 SND_SOC_DAPM_INPUT("LINP"),
694 SND_SOC_DAPM_PGA_E("ANC Engine", SND_SOC_NOPM, 0, 0, NULL, 0,
695 wm2000_anc_power_event,
696 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
699 /* Target, Path, Source */
700 static const struct snd_soc_dapm_route wm2000_audio_map[] = {
701 { "SPKN", NULL, "ANC Engine" },
702 { "SPKP", NULL, "ANC Engine" },
703 { "ANC Engine", NULL, "LINN" },
704 { "ANC Engine", NULL, "LINP" },
708 static int wm2000_suspend(struct snd_soc_component *component)
710 struct wm2000_priv *wm2000 = dev_get_drvdata(component->dev);
712 return wm2000_anc_transition(wm2000, ANC_OFF);
715 static int wm2000_resume(struct snd_soc_component *component)
717 struct wm2000_priv *wm2000 = dev_get_drvdata(component->dev);
719 return wm2000_anc_set_mode(wm2000);
722 #define wm2000_suspend NULL
723 #define wm2000_resume NULL
726 static bool wm2000_readable_reg(struct device *dev, unsigned int reg)
729 case WM2000_REG_SYS_START:
730 case WM2000_REG_ANC_GAIN_CTRL:
731 case WM2000_REG_MSE_TH1:
732 case WM2000_REG_MSE_TH2:
733 case WM2000_REG_SPEECH_CLARITY:
734 case WM2000_REG_SYS_WATCHDOG:
735 case WM2000_REG_ANA_VMID_PD_TIME:
736 case WM2000_REG_ANA_VMID_PU_TIME:
737 case WM2000_REG_CAT_FLTR_INDX:
738 case WM2000_REG_CAT_GAIN_0:
739 case WM2000_REG_SYS_STATUS:
740 case WM2000_REG_SYS_MODE_CNTRL:
741 case WM2000_REG_SYS_START0:
742 case WM2000_REG_SYS_START1:
745 case WM2000_REG_REVISON:
746 case WM2000_REG_SYS_CTL1:
747 case WM2000_REG_SYS_CTL2:
748 case WM2000_REG_ANC_STAT:
749 case WM2000_REG_IF_CTL:
750 case WM2000_REG_ANA_MIC_CTL:
751 case WM2000_REG_SPK_CTL:
758 static const struct regmap_config wm2000_regmap = {
762 .max_register = WM2000_REG_SPK_CTL,
763 .readable_reg = wm2000_readable_reg,
766 static int wm2000_probe(struct snd_soc_component *component)
768 struct wm2000_priv *wm2000 = dev_get_drvdata(component->dev);
770 /* This will trigger a transition to standby mode by default */
771 wm2000_anc_set_mode(wm2000);
776 static void wm2000_remove(struct snd_soc_component *component)
778 struct wm2000_priv *wm2000 = dev_get_drvdata(component->dev);
780 wm2000_anc_transition(wm2000, ANC_OFF);
783 static const struct snd_soc_component_driver soc_component_dev_wm2000 = {
784 .probe = wm2000_probe,
785 .remove = wm2000_remove,
786 .suspend = wm2000_suspend,
787 .resume = wm2000_resume,
788 .controls = wm2000_controls,
789 .num_controls = ARRAY_SIZE(wm2000_controls),
790 .dapm_widgets = wm2000_dapm_widgets,
791 .num_dapm_widgets = ARRAY_SIZE(wm2000_dapm_widgets),
792 .dapm_routes = wm2000_audio_map,
793 .num_dapm_routes = ARRAY_SIZE(wm2000_audio_map),
795 .use_pmdown_time = 1,
797 .non_legacy_dai_naming = 1,
800 static int wm2000_i2c_probe(struct i2c_client *i2c,
801 const struct i2c_device_id *i2c_id)
803 struct wm2000_priv *wm2000;
804 struct wm2000_platform_data *pdata;
805 const char *filename;
806 const struct firmware *fw = NULL;
811 wm2000 = devm_kzalloc(&i2c->dev, sizeof(*wm2000), GFP_KERNEL);
815 mutex_init(&wm2000->lock);
817 dev_set_drvdata(&i2c->dev, wm2000);
819 wm2000->regmap = devm_regmap_init_i2c(i2c, &wm2000_regmap);
820 if (IS_ERR(wm2000->regmap)) {
821 ret = PTR_ERR(wm2000->regmap);
822 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
827 for (i = 0; i < WM2000_NUM_SUPPLIES; i++)
828 wm2000->supplies[i].supply = wm2000_supplies[i];
830 ret = devm_regulator_bulk_get(&i2c->dev, WM2000_NUM_SUPPLIES,
833 dev_err(&i2c->dev, "Failed to get supplies: %d\n", ret);
837 ret = regulator_bulk_enable(WM2000_NUM_SUPPLIES, wm2000->supplies);
839 dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
843 /* Verify that this is a WM2000 */
844 ret = regmap_read(wm2000->regmap, WM2000_REG_ID1, ®);
846 dev_err(&i2c->dev, "Unable to read ID1: %d\n", ret);
850 ret = regmap_read(wm2000->regmap, WM2000_REG_ID2, ®);
852 dev_err(&i2c->dev, "Unable to read ID2: %d\n", ret);
858 dev_err(&i2c->dev, "Device is not a WM2000 - ID %x\n", id);
863 ret = regmap_read(wm2000->regmap, WM2000_REG_REVISON, ®);
865 dev_err(&i2c->dev, "Unable to read Revision: %d\n", ret);
868 dev_info(&i2c->dev, "revision %c\n", reg + 'A');
870 wm2000->mclk = devm_clk_get(&i2c->dev, "MCLK");
871 if (IS_ERR(wm2000->mclk)) {
872 ret = PTR_ERR(wm2000->mclk);
873 dev_err(&i2c->dev, "Failed to get MCLK: %d\n", ret);
877 filename = "/*(DEBLOBBED)*/";
878 pdata = dev_get_platdata(&i2c->dev);
880 wm2000->speech_clarity = !pdata->speech_enh_disable;
882 if (pdata->download_file)
883 filename = pdata->download_file;
886 ret = reject_firmware(&fw, filename, &i2c->dev);
888 dev_err(&i2c->dev, "Failed to acquire ANC data: %d\n", ret);
892 /* Pre-cook the concatenation of the register address onto the image */
893 wm2000->anc_download_size = fw->size + 2;
894 wm2000->anc_download = devm_kzalloc(&i2c->dev,
895 wm2000->anc_download_size,
897 if (wm2000->anc_download == NULL) {
902 wm2000->anc_download[0] = 0x80;
903 wm2000->anc_download[1] = 0x00;
904 memcpy(wm2000->anc_download + 2, fw->data, fw->size);
906 wm2000->anc_eng_ena = 1;
907 wm2000->anc_active = 1;
911 wm2000_reset(wm2000);
913 ret = devm_snd_soc_register_component(&i2c->dev,
914 &soc_component_dev_wm2000, NULL, 0);
917 regulator_bulk_disable(WM2000_NUM_SUPPLIES, wm2000->supplies);
920 release_firmware(fw);
924 static const struct i2c_device_id wm2000_i2c_id[] = {
928 MODULE_DEVICE_TABLE(i2c, wm2000_i2c_id);
930 static struct i2c_driver wm2000_i2c_driver = {
934 .probe = wm2000_i2c_probe,
935 .id_table = wm2000_i2c_id,
938 module_i2c_driver(wm2000_i2c_driver);
940 MODULE_DESCRIPTION("ASoC WM2000 driver");
941 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfonmicro.com>");
942 MODULE_LICENSE("GPL");