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TOMOYO Linux Cross Reference
Linux/sound/soc/codecs/da7219-aad.c

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  1 /*
  2  * da7219-aad.c - Dialog DA7219 ALSA SoC AAD Driver
  3  *
  4  * Copyright (c) 2015 Dialog Semiconductor Ltd.
  5  *
  6  * Author: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
  7  *
  8  * This program is free software; you can redistribute  it and/or modify it
  9  * under  the terms of  the GNU General  Public License as published by the
 10  * Free Software Foundation;  either version 2 of the  License, or (at your
 11  * option) any later version.
 12  */
 13 
 14 #include <linux/module.h>
 15 #include <linux/platform_device.h>
 16 #include <linux/clk.h>
 17 #include <linux/i2c.h>
 18 #include <linux/property.h>
 19 #include <linux/pm_wakeirq.h>
 20 #include <linux/slab.h>
 21 #include <linux/delay.h>
 22 #include <linux/workqueue.h>
 23 #include <sound/soc.h>
 24 #include <sound/jack.h>
 25 #include <sound/da7219.h>
 26 
 27 #include "da7219.h"
 28 #include "da7219-aad.h"
 29 
 30 
 31 /*
 32  * Detection control
 33  */
 34 
 35 void da7219_aad_jack_det(struct snd_soc_codec *codec, struct snd_soc_jack *jack)
 36 {
 37         struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
 38 
 39         da7219->aad->jack = jack;
 40         da7219->aad->jack_inserted = false;
 41 
 42         /* Send an initial empty report */
 43         snd_soc_jack_report(jack, 0, DA7219_AAD_REPORT_ALL_MASK);
 44 
 45         /* Enable/Disable jack detection */
 46         snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
 47                             DA7219_ACCDET_EN_MASK,
 48                             (jack ? DA7219_ACCDET_EN_MASK : 0));
 49 }
 50 EXPORT_SYMBOL_GPL(da7219_aad_jack_det);
 51 
 52 /*
 53  * Button/HPTest work
 54  */
 55 
 56 static void da7219_aad_btn_det_work(struct work_struct *work)
 57 {
 58         struct da7219_aad_priv *da7219_aad =
 59                 container_of(work, struct da7219_aad_priv, btn_det_work);
 60         struct snd_soc_codec *codec = da7219_aad->codec;
 61         struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
 62         u8 statusa, micbias_ctrl;
 63         bool micbias_up = false;
 64         int retries = 0;
 65 
 66         /* Drive headphones/lineout */
 67         snd_soc_update_bits(codec, DA7219_HP_L_CTRL,
 68                             DA7219_HP_L_AMP_OE_MASK,
 69                             DA7219_HP_L_AMP_OE_MASK);
 70         snd_soc_update_bits(codec, DA7219_HP_R_CTRL,
 71                             DA7219_HP_R_AMP_OE_MASK,
 72                             DA7219_HP_R_AMP_OE_MASK);
 73 
 74         /* Make sure mic bias is up */
 75         snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
 76         snd_soc_dapm_sync(dapm);
 77 
 78         do {
 79                 statusa = snd_soc_read(codec, DA7219_ACCDET_STATUS_A);
 80                 if (statusa & DA7219_MICBIAS_UP_STS_MASK)
 81                         micbias_up = true;
 82                 else if (retries++ < DA7219_AAD_MICBIAS_CHK_RETRIES)
 83                         msleep(DA7219_AAD_MICBIAS_CHK_DELAY);
 84         } while ((!micbias_up) && (retries < DA7219_AAD_MICBIAS_CHK_RETRIES));
 85 
 86         if (retries >= DA7219_AAD_MICBIAS_CHK_RETRIES)
 87                 dev_warn(codec->dev, "Mic bias status check timed out");
 88 
 89         /*
 90          * Mic bias pulse required to enable mic, must be done before enabling
 91          * button detection to prevent erroneous button readings.
 92          */
 93         if (da7219_aad->micbias_pulse_lvl && da7219_aad->micbias_pulse_time) {
 94                 /* Pulse higher level voltage */
 95                 micbias_ctrl = snd_soc_read(codec, DA7219_MICBIAS_CTRL);
 96                 snd_soc_update_bits(codec, DA7219_MICBIAS_CTRL,
 97                                     DA7219_MICBIAS1_LEVEL_MASK,
 98                                     da7219_aad->micbias_pulse_lvl);
 99                 msleep(da7219_aad->micbias_pulse_time);
100                 snd_soc_write(codec, DA7219_MICBIAS_CTRL, micbias_ctrl);
101 
102         }
103 
104         snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
105                             DA7219_BUTTON_CONFIG_MASK,
106                             da7219_aad->btn_cfg);
107 }
108 
109 static void da7219_aad_hptest_work(struct work_struct *work)
110 {
111         struct da7219_aad_priv *da7219_aad =
112                 container_of(work, struct da7219_aad_priv, hptest_work);
113         struct snd_soc_codec *codec = da7219_aad->codec;
114         struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
115         struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
116 
117         u16 tonegen_freq_hptest;
118         u8 pll_srm_sts, gain_ramp_ctrl, accdet_cfg8;
119         int report = 0, ret = 0;
120 
121         /* Lock DAPM and any Kcontrols that are affected by this test */
122         snd_soc_dapm_mutex_lock(dapm);
123         mutex_lock(&da7219->lock);
124 
125         /* Ensure MCLK is available for HP test procedure */
126         if (da7219->mclk) {
127                 ret = clk_prepare_enable(da7219->mclk);
128                 if (ret) {
129                         dev_err(codec->dev, "Failed to enable mclk - %d\n", ret);
130                         mutex_unlock(&da7219->lock);
131                         snd_soc_dapm_mutex_unlock(dapm);
132                         return;
133                 }
134         }
135 
136         /*
137          * If MCLK not present, then we're using the internal oscillator and
138          * require different frequency settings to achieve the same result.
139          */
140         pll_srm_sts = snd_soc_read(codec, DA7219_PLL_SRM_STS);
141         if (pll_srm_sts & DA7219_PLL_SRM_STS_MCLK)
142                 tonegen_freq_hptest = cpu_to_le16(DA7219_AAD_HPTEST_RAMP_FREQ);
143         else
144                 tonegen_freq_hptest = cpu_to_le16(DA7219_AAD_HPTEST_RAMP_FREQ_INT_OSC);
145 
146         /* Ensure gain ramping at fastest rate */
147         gain_ramp_ctrl = snd_soc_read(codec, DA7219_GAIN_RAMP_CTRL);
148         snd_soc_write(codec, DA7219_GAIN_RAMP_CTRL, DA7219_GAIN_RAMP_RATE_X8);
149 
150         /* Bypass cache so it saves current settings */
151         regcache_cache_bypass(da7219->regmap, true);
152 
153         /* Make sure Tone Generator is disabled */
154         snd_soc_write(codec, DA7219_TONE_GEN_CFG1, 0);
155 
156         /* Enable HPTest block, 1KOhms check */
157         snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_8,
158                             DA7219_HPTEST_EN_MASK | DA7219_HPTEST_RES_SEL_MASK,
159                             DA7219_HPTEST_EN_MASK |
160                             DA7219_HPTEST_RES_SEL_1KOHMS);
161 
162         /* Set gains to 0db */
163         snd_soc_write(codec, DA7219_DAC_L_GAIN, DA7219_DAC_DIGITAL_GAIN_0DB);
164         snd_soc_write(codec, DA7219_DAC_R_GAIN, DA7219_DAC_DIGITAL_GAIN_0DB);
165         snd_soc_write(codec, DA7219_HP_L_GAIN, DA7219_HP_AMP_GAIN_0DB);
166         snd_soc_write(codec, DA7219_HP_R_GAIN, DA7219_HP_AMP_GAIN_0DB);
167 
168         /* Disable DAC filters, EQs and soft mute */
169         snd_soc_update_bits(codec, DA7219_DAC_FILTERS1, DA7219_HPF_MODE_MASK,
170                             0);
171         snd_soc_update_bits(codec, DA7219_DAC_FILTERS4, DA7219_DAC_EQ_EN_MASK,
172                             0);
173         snd_soc_update_bits(codec, DA7219_DAC_FILTERS5,
174                             DA7219_DAC_SOFTMUTE_EN_MASK, 0);
175 
176         /* Enable HP left & right paths */
177         snd_soc_update_bits(codec, DA7219_CP_CTRL, DA7219_CP_EN_MASK,
178                             DA7219_CP_EN_MASK);
179         snd_soc_update_bits(codec, DA7219_DIG_ROUTING_DAC,
180                             DA7219_DAC_L_SRC_MASK | DA7219_DAC_R_SRC_MASK,
181                             DA7219_DAC_L_SRC_TONEGEN |
182                             DA7219_DAC_R_SRC_TONEGEN);
183         snd_soc_update_bits(codec, DA7219_DAC_L_CTRL,
184                             DA7219_DAC_L_EN_MASK | DA7219_DAC_L_MUTE_EN_MASK,
185                             DA7219_DAC_L_EN_MASK);
186         snd_soc_update_bits(codec, DA7219_DAC_R_CTRL,
187                             DA7219_DAC_R_EN_MASK | DA7219_DAC_R_MUTE_EN_MASK,
188                             DA7219_DAC_R_EN_MASK);
189         snd_soc_update_bits(codec, DA7219_MIXOUT_L_SELECT,
190                             DA7219_MIXOUT_L_MIX_SELECT_MASK,
191                             DA7219_MIXOUT_L_MIX_SELECT_MASK);
192         snd_soc_update_bits(codec, DA7219_MIXOUT_R_SELECT,
193                             DA7219_MIXOUT_R_MIX_SELECT_MASK,
194                             DA7219_MIXOUT_R_MIX_SELECT_MASK);
195         snd_soc_update_bits(codec, DA7219_DROUTING_ST_OUTFILT_1L,
196                             DA7219_OUTFILT_ST_1L_SRC_MASK,
197                             DA7219_DMIX_ST_SRC_OUTFILT1L);
198         snd_soc_update_bits(codec, DA7219_DROUTING_ST_OUTFILT_1R,
199                             DA7219_OUTFILT_ST_1R_SRC_MASK,
200                             DA7219_DMIX_ST_SRC_OUTFILT1R);
201         snd_soc_update_bits(codec, DA7219_MIXOUT_L_CTRL,
202                             DA7219_MIXOUT_L_AMP_EN_MASK,
203                             DA7219_MIXOUT_L_AMP_EN_MASK);
204         snd_soc_update_bits(codec, DA7219_MIXOUT_R_CTRL,
205                             DA7219_MIXOUT_R_AMP_EN_MASK,
206                             DA7219_MIXOUT_R_AMP_EN_MASK);
207         snd_soc_update_bits(codec, DA7219_HP_L_CTRL,
208                             DA7219_HP_L_AMP_OE_MASK | DA7219_HP_L_AMP_EN_MASK,
209                             DA7219_HP_L_AMP_OE_MASK | DA7219_HP_L_AMP_EN_MASK);
210         snd_soc_update_bits(codec, DA7219_HP_R_CTRL,
211                             DA7219_HP_R_AMP_OE_MASK | DA7219_HP_R_AMP_EN_MASK,
212                             DA7219_HP_R_AMP_OE_MASK | DA7219_HP_R_AMP_EN_MASK);
213         msleep(DA7219_SETTLING_DELAY);
214         snd_soc_update_bits(codec, DA7219_HP_L_CTRL,
215                             DA7219_HP_L_AMP_MUTE_EN_MASK |
216                             DA7219_HP_L_AMP_MIN_GAIN_EN_MASK, 0);
217         snd_soc_update_bits(codec, DA7219_HP_R_CTRL,
218                             DA7219_HP_R_AMP_MUTE_EN_MASK |
219                             DA7219_HP_R_AMP_MIN_GAIN_EN_MASK, 0);
220 
221         /*
222          * If we're running from the internal oscillator then give audio paths
223          * time to settle before running test.
224          */
225         if (!(pll_srm_sts & DA7219_PLL_SRM_STS_MCLK))
226                 msleep(DA7219_AAD_HPTEST_INT_OSC_PATH_DELAY);
227 
228         /* Configure & start Tone Generator */
229         snd_soc_write(codec, DA7219_TONE_GEN_ON_PER, DA7219_BEEP_ON_PER_MASK);
230         regmap_raw_write(da7219->regmap, DA7219_TONE_GEN_FREQ1_L,
231                          &tonegen_freq_hptest, sizeof(tonegen_freq_hptest));
232         snd_soc_update_bits(codec, DA7219_TONE_GEN_CFG2,
233                             DA7219_SWG_SEL_MASK | DA7219_TONE_GEN_GAIN_MASK,
234                             DA7219_SWG_SEL_SRAMP |
235                             DA7219_TONE_GEN_GAIN_MINUS_15DB);
236         snd_soc_write(codec, DA7219_TONE_GEN_CFG1, DA7219_START_STOPN_MASK);
237 
238         msleep(DA7219_AAD_HPTEST_PERIOD);
239 
240         /* Grab comparator reading */
241         accdet_cfg8 = snd_soc_read(codec, DA7219_ACCDET_CONFIG_8);
242         if (accdet_cfg8 & DA7219_HPTEST_COMP_MASK)
243                 report |= SND_JACK_HEADPHONE;
244         else
245                 report |= SND_JACK_LINEOUT;
246 
247         /* Stop tone generator */
248         snd_soc_write(codec, DA7219_TONE_GEN_CFG1, 0);
249 
250         msleep(DA7219_AAD_HPTEST_PERIOD);
251 
252         /* Restore original settings from cache */
253         regcache_mark_dirty(da7219->regmap);
254         regcache_sync_region(da7219->regmap, DA7219_HP_L_CTRL,
255                              DA7219_HP_R_CTRL);
256         msleep(DA7219_SETTLING_DELAY);
257         regcache_sync_region(da7219->regmap, DA7219_MIXOUT_L_CTRL,
258                              DA7219_MIXOUT_R_CTRL);
259         regcache_sync_region(da7219->regmap, DA7219_DROUTING_ST_OUTFILT_1L,
260                              DA7219_DROUTING_ST_OUTFILT_1R);
261         regcache_sync_region(da7219->regmap, DA7219_MIXOUT_L_SELECT,
262                              DA7219_MIXOUT_R_SELECT);
263         regcache_sync_region(da7219->regmap, DA7219_DAC_L_CTRL,
264                              DA7219_DAC_R_CTRL);
265         regcache_sync_region(da7219->regmap, DA7219_DIG_ROUTING_DAC,
266                              DA7219_DIG_ROUTING_DAC);
267         regcache_sync_region(da7219->regmap, DA7219_CP_CTRL, DA7219_CP_CTRL);
268         regcache_sync_region(da7219->regmap, DA7219_DAC_FILTERS5,
269                              DA7219_DAC_FILTERS5);
270         regcache_sync_region(da7219->regmap, DA7219_DAC_FILTERS4,
271                              DA7219_DAC_FILTERS1);
272         regcache_sync_region(da7219->regmap, DA7219_HP_L_GAIN,
273                              DA7219_HP_R_GAIN);
274         regcache_sync_region(da7219->regmap, DA7219_DAC_L_GAIN,
275                              DA7219_DAC_R_GAIN);
276         regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_ON_PER,
277                              DA7219_TONE_GEN_ON_PER);
278         regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_FREQ1_L,
279                              DA7219_TONE_GEN_FREQ1_U);
280         regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_CFG1,
281                              DA7219_TONE_GEN_CFG2);
282 
283         regcache_cache_bypass(da7219->regmap, false);
284 
285         /* Disable HPTest block */
286         snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_8,
287                             DA7219_HPTEST_EN_MASK, 0);
288 
289         /*
290          * If we're running from the internal oscillator then give audio paths
291          * time to settle before allowing headphones to be driven as required.
292          */
293         if (!(pll_srm_sts & DA7219_PLL_SRM_STS_MCLK))
294                 msleep(DA7219_AAD_HPTEST_INT_OSC_PATH_DELAY);
295 
296         /* Restore gain ramping rate */
297         snd_soc_write(codec, DA7219_GAIN_RAMP_CTRL, gain_ramp_ctrl);
298 
299         /* Drive Headphones/lineout */
300         snd_soc_update_bits(codec, DA7219_HP_L_CTRL, DA7219_HP_L_AMP_OE_MASK,
301                             DA7219_HP_L_AMP_OE_MASK);
302         snd_soc_update_bits(codec, DA7219_HP_R_CTRL, DA7219_HP_R_AMP_OE_MASK,
303                             DA7219_HP_R_AMP_OE_MASK);
304 
305         /* Remove MCLK, if previously enabled */
306         if (da7219->mclk)
307                 clk_disable_unprepare(da7219->mclk);
308 
309         mutex_unlock(&da7219->lock);
310         snd_soc_dapm_mutex_unlock(dapm);
311 
312         /*
313          * Only send report if jack hasn't been removed during process,
314          * otherwise it's invalid and we drop it.
315          */
316         if (da7219_aad->jack_inserted)
317                 snd_soc_jack_report(da7219_aad->jack, report,
318                                     SND_JACK_HEADSET | SND_JACK_LINEOUT);
319 }
320 
321 
322 /*
323  * IRQ
324  */
325 
326 static irqreturn_t da7219_aad_irq_thread(int irq, void *data)
327 {
328         struct da7219_aad_priv *da7219_aad = data;
329         struct snd_soc_codec *codec = da7219_aad->codec;
330         struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
331         struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
332         u8 events[DA7219_AAD_IRQ_REG_MAX];
333         u8 statusa;
334         int i, report = 0, mask = 0;
335 
336         /* Read current IRQ events */
337         regmap_bulk_read(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A,
338                          events, DA7219_AAD_IRQ_REG_MAX);
339 
340         if (!events[DA7219_AAD_IRQ_REG_A] && !events[DA7219_AAD_IRQ_REG_B])
341                 return IRQ_NONE;
342 
343         /* Read status register for jack insertion & type status */
344         statusa = snd_soc_read(codec, DA7219_ACCDET_STATUS_A);
345 
346         /* Clear events */
347         regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A,
348                           events, DA7219_AAD_IRQ_REG_MAX);
349 
350         dev_dbg(codec->dev, "IRQ events = 0x%x|0x%x, status = 0x%x\n",
351                 events[DA7219_AAD_IRQ_REG_A], events[DA7219_AAD_IRQ_REG_B],
352                 statusa);
353 
354         if (statusa & DA7219_JACK_INSERTION_STS_MASK) {
355                 /* Jack Insertion */
356                 if (events[DA7219_AAD_IRQ_REG_A] &
357                     DA7219_E_JACK_INSERTED_MASK) {
358                         report |= SND_JACK_MECHANICAL;
359                         mask |= SND_JACK_MECHANICAL;
360                         da7219_aad->jack_inserted = true;
361                 }
362 
363                 /* Jack type detection */
364                 if (events[DA7219_AAD_IRQ_REG_A] &
365                     DA7219_E_JACK_DETECT_COMPLETE_MASK) {
366                         /*
367                          * If 4-pole, then enable button detection, else perform
368                          * HP impedance test to determine output type to report.
369                          *
370                          * We schedule work here as the tasks themselves can
371                          * take time to complete, and in particular for hptest
372                          * we want to be able to check if the jack was removed
373                          * during the procedure as this will invalidate the
374                          * result. By doing this as work, the IRQ thread can
375                          * handle a removal, and we can check at the end of
376                          * hptest if we have a valid result or not.
377                          */
378                         if (statusa & DA7219_JACK_TYPE_STS_MASK) {
379                                 report |= SND_JACK_HEADSET;
380                                 mask |= SND_JACK_HEADSET | SND_JACK_LINEOUT;
381                                 schedule_work(&da7219_aad->btn_det_work);
382                         } else {
383                                 schedule_work(&da7219_aad->hptest_work);
384                         }
385                 }
386 
387                 /* Button support for 4-pole jack */
388                 if (statusa & DA7219_JACK_TYPE_STS_MASK) {
389                         for (i = 0; i < DA7219_AAD_MAX_BUTTONS; ++i) {
390                                 /* Button Press */
391                                 if (events[DA7219_AAD_IRQ_REG_B] &
392                                     (DA7219_E_BUTTON_A_PRESSED_MASK << i)) {
393                                         report |= SND_JACK_BTN_0 >> i;
394                                         mask |= SND_JACK_BTN_0 >> i;
395                                 }
396                         }
397                         snd_soc_jack_report(da7219_aad->jack, report, mask);
398 
399                         for (i = 0; i < DA7219_AAD_MAX_BUTTONS; ++i) {
400                                 /* Button Release */
401                                 if (events[DA7219_AAD_IRQ_REG_B] &
402                                     (DA7219_E_BUTTON_A_RELEASED_MASK >> i)) {
403                                         report &= ~(SND_JACK_BTN_0 >> i);
404                                         mask |= SND_JACK_BTN_0 >> i;
405                                 }
406                         }
407                 }
408         } else {
409                 /* Jack removal */
410                 if (events[DA7219_AAD_IRQ_REG_A] & DA7219_E_JACK_REMOVED_MASK) {
411                         report = 0;
412                         mask |= DA7219_AAD_REPORT_ALL_MASK;
413                         da7219_aad->jack_inserted = false;
414 
415                         /* Un-drive headphones/lineout */
416                         snd_soc_update_bits(codec, DA7219_HP_R_CTRL,
417                                             DA7219_HP_R_AMP_OE_MASK, 0);
418                         snd_soc_update_bits(codec, DA7219_HP_L_CTRL,
419                                             DA7219_HP_L_AMP_OE_MASK, 0);
420 
421                         /* Ensure button detection disabled */
422                         snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
423                                             DA7219_BUTTON_CONFIG_MASK, 0);
424 
425                         /* Disable mic bias */
426                         snd_soc_dapm_disable_pin(dapm, "Mic Bias");
427                         snd_soc_dapm_sync(dapm);
428 
429                         /* Cancel any pending work */
430                         cancel_work_sync(&da7219_aad->btn_det_work);
431                         cancel_work_sync(&da7219_aad->hptest_work);
432                 }
433         }
434 
435         snd_soc_jack_report(da7219_aad->jack, report, mask);
436 
437         return IRQ_HANDLED;
438 }
439 
440 /*
441  * DT/ACPI to pdata conversion
442  */
443 
444 static enum da7219_aad_micbias_pulse_lvl
445         da7219_aad_fw_micbias_pulse_lvl(struct snd_soc_codec *codec, u32 val)
446 {
447         switch (val) {
448         case 2800:
449                 return DA7219_AAD_MICBIAS_PULSE_LVL_2_8V;
450         case 2900:
451                 return DA7219_AAD_MICBIAS_PULSE_LVL_2_9V;
452         default:
453                 dev_warn(codec->dev, "Invalid micbias pulse level");
454                 return DA7219_AAD_MICBIAS_PULSE_LVL_OFF;
455         }
456 }
457 
458 static enum da7219_aad_btn_cfg
459         da7219_aad_fw_btn_cfg(struct snd_soc_codec *codec, u32 val)
460 {
461         switch (val) {
462         case 2:
463                 return DA7219_AAD_BTN_CFG_2MS;
464         case 5:
465                 return DA7219_AAD_BTN_CFG_5MS;
466         case 10:
467                 return DA7219_AAD_BTN_CFG_10MS;
468         case 50:
469                 return DA7219_AAD_BTN_CFG_50MS;
470         case 100:
471                 return DA7219_AAD_BTN_CFG_100MS;
472         case 200:
473                 return DA7219_AAD_BTN_CFG_200MS;
474         case 500:
475                 return DA7219_AAD_BTN_CFG_500MS;
476         default:
477                 dev_warn(codec->dev, "Invalid button config");
478                 return DA7219_AAD_BTN_CFG_10MS;
479         }
480 }
481 
482 static enum da7219_aad_mic_det_thr
483         da7219_aad_fw_mic_det_thr(struct snd_soc_codec *codec, u32 val)
484 {
485         switch (val) {
486         case 200:
487                 return DA7219_AAD_MIC_DET_THR_200_OHMS;
488         case 500:
489                 return DA7219_AAD_MIC_DET_THR_500_OHMS;
490         case 750:
491                 return DA7219_AAD_MIC_DET_THR_750_OHMS;
492         case 1000:
493                 return DA7219_AAD_MIC_DET_THR_1000_OHMS;
494         default:
495                 dev_warn(codec->dev, "Invalid mic detect threshold");
496                 return DA7219_AAD_MIC_DET_THR_500_OHMS;
497         }
498 }
499 
500 static enum da7219_aad_jack_ins_deb
501         da7219_aad_fw_jack_ins_deb(struct snd_soc_codec *codec, u32 val)
502 {
503         switch (val) {
504         case 5:
505                 return DA7219_AAD_JACK_INS_DEB_5MS;
506         case 10:
507                 return DA7219_AAD_JACK_INS_DEB_10MS;
508         case 20:
509                 return DA7219_AAD_JACK_INS_DEB_20MS;
510         case 50:
511                 return DA7219_AAD_JACK_INS_DEB_50MS;
512         case 100:
513                 return DA7219_AAD_JACK_INS_DEB_100MS;
514         case 200:
515                 return DA7219_AAD_JACK_INS_DEB_200MS;
516         case 500:
517                 return DA7219_AAD_JACK_INS_DEB_500MS;
518         case 1000:
519                 return DA7219_AAD_JACK_INS_DEB_1S;
520         default:
521                 dev_warn(codec->dev, "Invalid jack insert debounce");
522                 return DA7219_AAD_JACK_INS_DEB_20MS;
523         }
524 }
525 
526 static enum da7219_aad_jack_det_rate
527         da7219_aad_fw_jack_det_rate(struct snd_soc_codec *codec, const char *str)
528 {
529         if (!strcmp(str, "32ms_64ms")) {
530                 return DA7219_AAD_JACK_DET_RATE_32_64MS;
531         } else if (!strcmp(str, "64ms_128ms")) {
532                 return DA7219_AAD_JACK_DET_RATE_64_128MS;
533         } else if (!strcmp(str, "128ms_256ms")) {
534                 return DA7219_AAD_JACK_DET_RATE_128_256MS;
535         } else if (!strcmp(str, "256ms_512ms")) {
536                 return DA7219_AAD_JACK_DET_RATE_256_512MS;
537         } else {
538                 dev_warn(codec->dev, "Invalid jack detect rate");
539                 return DA7219_AAD_JACK_DET_RATE_256_512MS;
540         }
541 }
542 
543 static enum da7219_aad_jack_rem_deb
544         da7219_aad_fw_jack_rem_deb(struct snd_soc_codec *codec, u32 val)
545 {
546         switch (val) {
547         case 1:
548                 return DA7219_AAD_JACK_REM_DEB_1MS;
549         case 5:
550                 return DA7219_AAD_JACK_REM_DEB_5MS;
551         case 10:
552                 return DA7219_AAD_JACK_REM_DEB_10MS;
553         case 20:
554                 return DA7219_AAD_JACK_REM_DEB_20MS;
555         default:
556                 dev_warn(codec->dev, "Invalid jack removal debounce");
557                 return DA7219_AAD_JACK_REM_DEB_1MS;
558         }
559 }
560 
561 static enum da7219_aad_btn_avg
562         da7219_aad_fw_btn_avg(struct snd_soc_codec *codec, u32 val)
563 {
564         switch (val) {
565         case 1:
566                 return DA7219_AAD_BTN_AVG_1;
567         case 2:
568                 return DA7219_AAD_BTN_AVG_2;
569         case 4:
570                 return DA7219_AAD_BTN_AVG_4;
571         case 8:
572                 return DA7219_AAD_BTN_AVG_8;
573         default:
574                 dev_warn(codec->dev, "Invalid button average value");
575                 return DA7219_AAD_BTN_AVG_2;
576         }
577 }
578 
579 static enum da7219_aad_adc_1bit_rpt
580         da7219_aad_fw_adc_1bit_rpt(struct snd_soc_codec *codec, u32 val)
581 {
582         switch (val) {
583         case 1:
584                 return DA7219_AAD_ADC_1BIT_RPT_1;
585         case 2:
586                 return DA7219_AAD_ADC_1BIT_RPT_2;
587         case 4:
588                 return DA7219_AAD_ADC_1BIT_RPT_4;
589         case 8:
590                 return DA7219_AAD_ADC_1BIT_RPT_8;
591         default:
592                 dev_warn(codec->dev, "Invalid ADC 1-bit repeat value");
593                 return DA7219_AAD_ADC_1BIT_RPT_1;
594         }
595 }
596 
597 static struct da7219_aad_pdata *da7219_aad_fw_to_pdata(struct snd_soc_codec *codec)
598 {
599         struct device *dev = codec->dev;
600         struct i2c_client *i2c = to_i2c_client(dev);
601         struct fwnode_handle *aad_np;
602         struct da7219_aad_pdata *aad_pdata;
603         const char *fw_str;
604         u32 fw_val32;
605 
606         aad_np = device_get_named_child_node(dev, "da7219_aad");
607         if (!aad_np)
608                 return NULL;
609 
610         aad_pdata = devm_kzalloc(codec->dev, sizeof(*aad_pdata), GFP_KERNEL);
611         if (!aad_pdata)
612                 return NULL;
613 
614         aad_pdata->irq = i2c->irq;
615 
616         if (fwnode_property_read_u32(aad_np, "dlg,micbias-pulse-lvl",
617                                      &fw_val32) >= 0)
618                 aad_pdata->micbias_pulse_lvl =
619                         da7219_aad_fw_micbias_pulse_lvl(codec, fw_val32);
620         else
621                 aad_pdata->micbias_pulse_lvl = DA7219_AAD_MICBIAS_PULSE_LVL_OFF;
622 
623         if (fwnode_property_read_u32(aad_np, "dlg,micbias-pulse-time",
624                                      &fw_val32) >= 0)
625                 aad_pdata->micbias_pulse_time = fw_val32;
626 
627         if (fwnode_property_read_u32(aad_np, "dlg,btn-cfg", &fw_val32) >= 0)
628                 aad_pdata->btn_cfg = da7219_aad_fw_btn_cfg(codec, fw_val32);
629         else
630                 aad_pdata->btn_cfg = DA7219_AAD_BTN_CFG_10MS;
631 
632         if (fwnode_property_read_u32(aad_np, "dlg,mic-det-thr", &fw_val32) >= 0)
633                 aad_pdata->mic_det_thr =
634                         da7219_aad_fw_mic_det_thr(codec, fw_val32);
635         else
636                 aad_pdata->mic_det_thr = DA7219_AAD_MIC_DET_THR_500_OHMS;
637 
638         if (fwnode_property_read_u32(aad_np, "dlg,jack-ins-deb", &fw_val32) >= 0)
639                 aad_pdata->jack_ins_deb =
640                         da7219_aad_fw_jack_ins_deb(codec, fw_val32);
641         else
642                 aad_pdata->jack_ins_deb = DA7219_AAD_JACK_INS_DEB_20MS;
643 
644         if (!fwnode_property_read_string(aad_np, "dlg,jack-det-rate", &fw_str))
645                 aad_pdata->jack_det_rate =
646                         da7219_aad_fw_jack_det_rate(codec, fw_str);
647         else
648                 aad_pdata->jack_det_rate = DA7219_AAD_JACK_DET_RATE_256_512MS;
649 
650         if (fwnode_property_read_u32(aad_np, "dlg,jack-rem-deb", &fw_val32) >= 0)
651                 aad_pdata->jack_rem_deb =
652                         da7219_aad_fw_jack_rem_deb(codec, fw_val32);
653         else
654                 aad_pdata->jack_rem_deb = DA7219_AAD_JACK_REM_DEB_1MS;
655 
656         if (fwnode_property_read_u32(aad_np, "dlg,a-d-btn-thr", &fw_val32) >= 0)
657                 aad_pdata->a_d_btn_thr = (u8) fw_val32;
658         else
659                 aad_pdata->a_d_btn_thr = 0xA;
660 
661         if (fwnode_property_read_u32(aad_np, "dlg,d-b-btn-thr", &fw_val32) >= 0)
662                 aad_pdata->d_b_btn_thr = (u8) fw_val32;
663         else
664                 aad_pdata->d_b_btn_thr = 0x16;
665 
666         if (fwnode_property_read_u32(aad_np, "dlg,b-c-btn-thr", &fw_val32) >= 0)
667                 aad_pdata->b_c_btn_thr = (u8) fw_val32;
668         else
669                 aad_pdata->b_c_btn_thr = 0x21;
670 
671         if (fwnode_property_read_u32(aad_np, "dlg,c-mic-btn-thr", &fw_val32) >= 0)
672                 aad_pdata->c_mic_btn_thr = (u8) fw_val32;
673         else
674                 aad_pdata->c_mic_btn_thr = 0x3E;
675 
676         if (fwnode_property_read_u32(aad_np, "dlg,btn-avg", &fw_val32) >= 0)
677                 aad_pdata->btn_avg = da7219_aad_fw_btn_avg(codec, fw_val32);
678         else
679                 aad_pdata->btn_avg = DA7219_AAD_BTN_AVG_2;
680 
681         if (fwnode_property_read_u32(aad_np, "dlg,adc-1bit-rpt", &fw_val32) >= 0)
682                 aad_pdata->adc_1bit_rpt =
683                         da7219_aad_fw_adc_1bit_rpt(codec, fw_val32);
684         else
685                 aad_pdata->adc_1bit_rpt = DA7219_AAD_ADC_1BIT_RPT_1;
686 
687         return aad_pdata;
688 }
689 
690 static void da7219_aad_handle_pdata(struct snd_soc_codec *codec)
691 {
692         struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
693         struct da7219_aad_priv *da7219_aad = da7219->aad;
694         struct da7219_pdata *pdata = da7219->pdata;
695 
696         if ((pdata) && (pdata->aad_pdata)) {
697                 struct da7219_aad_pdata *aad_pdata = pdata->aad_pdata;
698                 u8 cfg, mask;
699 
700                 da7219_aad->irq = aad_pdata->irq;
701 
702                 switch (aad_pdata->micbias_pulse_lvl) {
703                 case DA7219_AAD_MICBIAS_PULSE_LVL_2_8V:
704                 case DA7219_AAD_MICBIAS_PULSE_LVL_2_9V:
705                         da7219_aad->micbias_pulse_lvl =
706                                 (aad_pdata->micbias_pulse_lvl <<
707                                  DA7219_MICBIAS1_LEVEL_SHIFT);
708                         break;
709                 default:
710                         break;
711                 }
712 
713                 da7219_aad->micbias_pulse_time = aad_pdata->micbias_pulse_time;
714 
715                 switch (aad_pdata->btn_cfg) {
716                 case DA7219_AAD_BTN_CFG_2MS:
717                 case DA7219_AAD_BTN_CFG_5MS:
718                 case DA7219_AAD_BTN_CFG_10MS:
719                 case DA7219_AAD_BTN_CFG_50MS:
720                 case DA7219_AAD_BTN_CFG_100MS:
721                 case DA7219_AAD_BTN_CFG_200MS:
722                 case DA7219_AAD_BTN_CFG_500MS:
723                         da7219_aad->btn_cfg  = (aad_pdata->btn_cfg <<
724                                                 DA7219_BUTTON_CONFIG_SHIFT);
725                 }
726 
727                 cfg = 0;
728                 mask = 0;
729                 switch (aad_pdata->mic_det_thr) {
730                 case DA7219_AAD_MIC_DET_THR_200_OHMS:
731                 case DA7219_AAD_MIC_DET_THR_500_OHMS:
732                 case DA7219_AAD_MIC_DET_THR_750_OHMS:
733                 case DA7219_AAD_MIC_DET_THR_1000_OHMS:
734                         cfg |= (aad_pdata->mic_det_thr <<
735                                 DA7219_MIC_DET_THRESH_SHIFT);
736                         mask |= DA7219_MIC_DET_THRESH_MASK;
737                 }
738                 snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1, mask, cfg);
739 
740                 cfg = 0;
741                 mask = 0;
742                 switch (aad_pdata->jack_ins_deb) {
743                 case DA7219_AAD_JACK_INS_DEB_5MS:
744                 case DA7219_AAD_JACK_INS_DEB_10MS:
745                 case DA7219_AAD_JACK_INS_DEB_20MS:
746                 case DA7219_AAD_JACK_INS_DEB_50MS:
747                 case DA7219_AAD_JACK_INS_DEB_100MS:
748                 case DA7219_AAD_JACK_INS_DEB_200MS:
749                 case DA7219_AAD_JACK_INS_DEB_500MS:
750                 case DA7219_AAD_JACK_INS_DEB_1S:
751                         cfg |= (aad_pdata->jack_ins_deb <<
752                                 DA7219_JACKDET_DEBOUNCE_SHIFT);
753                         mask |= DA7219_JACKDET_DEBOUNCE_MASK;
754                 }
755                 switch (aad_pdata->jack_det_rate) {
756                 case DA7219_AAD_JACK_DET_RATE_32_64MS:
757                 case DA7219_AAD_JACK_DET_RATE_64_128MS:
758                 case DA7219_AAD_JACK_DET_RATE_128_256MS:
759                 case DA7219_AAD_JACK_DET_RATE_256_512MS:
760                         cfg |= (aad_pdata->jack_det_rate <<
761                                 DA7219_JACK_DETECT_RATE_SHIFT);
762                         mask |= DA7219_JACK_DETECT_RATE_MASK;
763                 }
764                 switch (aad_pdata->jack_rem_deb) {
765                 case DA7219_AAD_JACK_REM_DEB_1MS:
766                 case DA7219_AAD_JACK_REM_DEB_5MS:
767                 case DA7219_AAD_JACK_REM_DEB_10MS:
768                 case DA7219_AAD_JACK_REM_DEB_20MS:
769                         cfg |= (aad_pdata->jack_rem_deb <<
770                                 DA7219_JACKDET_REM_DEB_SHIFT);
771                         mask |= DA7219_JACKDET_REM_DEB_MASK;
772                 }
773                 snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_2, mask, cfg);
774 
775                 snd_soc_write(codec, DA7219_ACCDET_CONFIG_3,
776                               aad_pdata->a_d_btn_thr);
777                 snd_soc_write(codec, DA7219_ACCDET_CONFIG_4,
778                               aad_pdata->d_b_btn_thr);
779                 snd_soc_write(codec, DA7219_ACCDET_CONFIG_5,
780                               aad_pdata->b_c_btn_thr);
781                 snd_soc_write(codec, DA7219_ACCDET_CONFIG_6,
782                               aad_pdata->c_mic_btn_thr);
783 
784                 cfg = 0;
785                 mask = 0;
786                 switch (aad_pdata->btn_avg) {
787                 case DA7219_AAD_BTN_AVG_1:
788                 case DA7219_AAD_BTN_AVG_2:
789                 case DA7219_AAD_BTN_AVG_4:
790                 case DA7219_AAD_BTN_AVG_8:
791                         cfg |= (aad_pdata->btn_avg <<
792                                 DA7219_BUTTON_AVERAGE_SHIFT);
793                         mask |= DA7219_BUTTON_AVERAGE_MASK;
794                 }
795                 switch (aad_pdata->adc_1bit_rpt) {
796                 case DA7219_AAD_ADC_1BIT_RPT_1:
797                 case DA7219_AAD_ADC_1BIT_RPT_2:
798                 case DA7219_AAD_ADC_1BIT_RPT_4:
799                 case DA7219_AAD_ADC_1BIT_RPT_8:
800                         cfg |= (aad_pdata->adc_1bit_rpt <<
801                                DA7219_ADC_1_BIT_REPEAT_SHIFT);
802                         mask |= DA7219_ADC_1_BIT_REPEAT_MASK;
803                 }
804                 snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_7, mask, cfg);
805         }
806 }
807 
808 
809 /*
810  * Suspend/Resume
811  */
812 
813 void da7219_aad_suspend(struct snd_soc_codec *codec)
814 {
815         struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
816         struct da7219_aad_priv *da7219_aad = da7219->aad;
817         struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
818         u8 micbias_ctrl;
819 
820         if (da7219_aad->jack) {
821                 /* Disable jack detection during suspend */
822                 snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
823                                     DA7219_ACCDET_EN_MASK, 0);
824 
825                 /*
826                  * If we have a 4-pole jack inserted, then micbias will be
827                  * enabled. We can disable micbias here, and keep a note to
828                  * re-enable it on resume. If jack removal occurred during
829                  * suspend then this will be dealt with through the IRQ handler.
830                  */
831                 if (da7219_aad->jack_inserted) {
832                         micbias_ctrl = snd_soc_read(codec, DA7219_MICBIAS_CTRL);
833                         if (micbias_ctrl & DA7219_MICBIAS1_EN_MASK) {
834                                 snd_soc_dapm_disable_pin(dapm, "Mic Bias");
835                                 snd_soc_dapm_sync(dapm);
836                                 da7219_aad->micbias_resume_enable = true;
837                         }
838                 }
839         }
840 }
841 
842 void da7219_aad_resume(struct snd_soc_codec *codec)
843 {
844         struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
845         struct da7219_aad_priv *da7219_aad = da7219->aad;
846         struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
847 
848         if (da7219_aad->jack) {
849                 /* Re-enable micbias if previously enabled for 4-pole jack */
850                 if (da7219_aad->jack_inserted &&
851                     da7219_aad->micbias_resume_enable) {
852                         snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
853                         snd_soc_dapm_sync(dapm);
854                         da7219_aad->micbias_resume_enable = false;
855                 }
856 
857                 /* Re-enable jack detection */
858                 snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
859                                     DA7219_ACCDET_EN_MASK,
860                                     DA7219_ACCDET_EN_MASK);
861         }
862 }
863 
864 
865 /*
866  * Init/Exit
867  */
868 
869 int da7219_aad_init(struct snd_soc_codec *codec)
870 {
871         struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
872         struct da7219_aad_priv *da7219_aad;
873         u8 mask[DA7219_AAD_IRQ_REG_MAX];
874         int ret;
875 
876         da7219_aad = devm_kzalloc(codec->dev, sizeof(*da7219_aad), GFP_KERNEL);
877         if (!da7219_aad)
878                 return -ENOMEM;
879 
880         da7219->aad = da7219_aad;
881         da7219_aad->codec = codec;
882 
883         /* Handle any DT/ACPI/platform data */
884         if (da7219->pdata && !da7219->pdata->aad_pdata)
885                 da7219->pdata->aad_pdata = da7219_aad_fw_to_pdata(codec);
886 
887         da7219_aad_handle_pdata(codec);
888 
889         /* Disable button detection */
890         snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
891                             DA7219_BUTTON_CONFIG_MASK, 0);
892 
893         INIT_WORK(&da7219_aad->btn_det_work, da7219_aad_btn_det_work);
894         INIT_WORK(&da7219_aad->hptest_work, da7219_aad_hptest_work);
895 
896         ret = request_threaded_irq(da7219_aad->irq, NULL,
897                                    da7219_aad_irq_thread,
898                                    IRQF_TRIGGER_LOW | IRQF_ONESHOT,
899                                    "da7219-aad", da7219_aad);
900         if (ret) {
901                 dev_err(codec->dev, "Failed to request IRQ: %d\n", ret);
902                 return ret;
903         }
904 
905         /* Unmask AAD IRQs */
906         memset(mask, 0, DA7219_AAD_IRQ_REG_MAX);
907         regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_MASK_A,
908                           &mask, DA7219_AAD_IRQ_REG_MAX);
909 
910         return 0;
911 }
912 EXPORT_SYMBOL_GPL(da7219_aad_init);
913 
914 void da7219_aad_exit(struct snd_soc_codec *codec)
915 {
916         struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
917         struct da7219_aad_priv *da7219_aad = da7219->aad;
918         u8 mask[DA7219_AAD_IRQ_REG_MAX];
919 
920         /* Mask off AAD IRQs */
921         memset(mask, DA7219_BYTE_MASK, DA7219_AAD_IRQ_REG_MAX);
922         regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_MASK_A,
923                           mask, DA7219_AAD_IRQ_REG_MAX);
924 
925         free_irq(da7219_aad->irq, da7219_aad);
926 
927         cancel_work_sync(&da7219_aad->btn_det_work);
928         cancel_work_sync(&da7219_aad->hptest_work);
929 }
930 EXPORT_SYMBOL_GPL(da7219_aad_exit);
931 
932 MODULE_DESCRIPTION("ASoC DA7219 AAD Driver");
933 MODULE_AUTHOR("Adam Thomson <Adam.Thomson.Opensource@diasemi.com>");
934 MODULE_LICENSE("GPL");
935 

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