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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_component *component, struct snd_soc_jack *jack)
 36 {
 37         struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
 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_component_update_bits(component, 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_component *component = da7219_aad->component;
 61         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
 62         u8 statusa, micbias_ctrl;
 63         bool micbias_up = false;
 64         int retries = 0;
 65 
 66         /* Drive headphones/lineout */
 67         snd_soc_component_update_bits(component, DA7219_HP_L_CTRL,
 68                             DA7219_HP_L_AMP_OE_MASK,
 69                             DA7219_HP_L_AMP_OE_MASK);
 70         snd_soc_component_update_bits(component, 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_component_read32(component, 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(component->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_component_read32(component, DA7219_MICBIAS_CTRL);
 96                 snd_soc_component_update_bits(component, DA7219_MICBIAS_CTRL,
 97                                     DA7219_MICBIAS1_LEVEL_MASK,
 98                                     da7219_aad->micbias_pulse_lvl);
 99                 msleep(da7219_aad->micbias_pulse_time);
100                 snd_soc_component_write(component, DA7219_MICBIAS_CTRL, micbias_ctrl);
101 
102         }
103 
104         snd_soc_component_update_bits(component, 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_component *component = da7219_aad->component;
114         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
115         struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
116 
117         u16 tonegen_freq_hptest;
118         u8 pll_srm_sts, pll_ctrl, gain_ramp_ctrl, accdet_cfg8;
119         int report = 0, ret = 0;
120 
121         /* Lock DAPM, Kcontrols affected by this test and the PLL */
122         snd_soc_dapm_mutex_lock(dapm);
123         mutex_lock(&da7219->ctrl_lock);
124         mutex_lock(&da7219->pll_lock);
125 
126         /* Ensure MCLK is available for HP test procedure */
127         if (da7219->mclk) {
128                 ret = clk_prepare_enable(da7219->mclk);
129                 if (ret) {
130                         dev_err(component->dev, "Failed to enable mclk - %d\n", ret);
131                         mutex_unlock(&da7219->pll_lock);
132                         mutex_unlock(&da7219->ctrl_lock);
133                         snd_soc_dapm_mutex_unlock(dapm);
134                         return;
135                 }
136         }
137 
138         /*
139          * If MCLK not present, then we're using the internal oscillator and
140          * require different frequency settings to achieve the same result.
141          *
142          * If MCLK is present, but PLL is not enabled then we enable it here to
143          * ensure a consistent detection procedure.
144          */
145         pll_srm_sts = snd_soc_component_read32(component, DA7219_PLL_SRM_STS);
146         if (pll_srm_sts & DA7219_PLL_SRM_STS_MCLK) {
147                 tonegen_freq_hptest = cpu_to_le16(DA7219_AAD_HPTEST_RAMP_FREQ);
148 
149                 pll_ctrl = snd_soc_component_read32(component, DA7219_PLL_CTRL);
150                 if ((pll_ctrl & DA7219_PLL_MODE_MASK) == DA7219_PLL_MODE_BYPASS)
151                         da7219_set_pll(component, DA7219_SYSCLK_PLL,
152                                        DA7219_PLL_FREQ_OUT_98304);
153         } else {
154                 tonegen_freq_hptest = cpu_to_le16(DA7219_AAD_HPTEST_RAMP_FREQ_INT_OSC);
155         }
156 
157         /* Ensure gain ramping at fastest rate */
158         gain_ramp_ctrl = snd_soc_component_read32(component, DA7219_GAIN_RAMP_CTRL);
159         snd_soc_component_write(component, DA7219_GAIN_RAMP_CTRL, DA7219_GAIN_RAMP_RATE_X8);
160 
161         /* Bypass cache so it saves current settings */
162         regcache_cache_bypass(da7219->regmap, true);
163 
164         /* Make sure Tone Generator is disabled */
165         snd_soc_component_write(component, DA7219_TONE_GEN_CFG1, 0);
166 
167         /* Enable HPTest block, 1KOhms check */
168         snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_8,
169                             DA7219_HPTEST_EN_MASK | DA7219_HPTEST_RES_SEL_MASK,
170                             DA7219_HPTEST_EN_MASK |
171                             DA7219_HPTEST_RES_SEL_1KOHMS);
172 
173         /* Set gains to 0db */
174         snd_soc_component_write(component, DA7219_DAC_L_GAIN, DA7219_DAC_DIGITAL_GAIN_0DB);
175         snd_soc_component_write(component, DA7219_DAC_R_GAIN, DA7219_DAC_DIGITAL_GAIN_0DB);
176         snd_soc_component_write(component, DA7219_HP_L_GAIN, DA7219_HP_AMP_GAIN_0DB);
177         snd_soc_component_write(component, DA7219_HP_R_GAIN, DA7219_HP_AMP_GAIN_0DB);
178 
179         /* Disable DAC filters, EQs and soft mute */
180         snd_soc_component_update_bits(component, DA7219_DAC_FILTERS1, DA7219_HPF_MODE_MASK,
181                             0);
182         snd_soc_component_update_bits(component, DA7219_DAC_FILTERS4, DA7219_DAC_EQ_EN_MASK,
183                             0);
184         snd_soc_component_update_bits(component, DA7219_DAC_FILTERS5,
185                             DA7219_DAC_SOFTMUTE_EN_MASK, 0);
186 
187         /* Enable HP left & right paths */
188         snd_soc_component_update_bits(component, DA7219_CP_CTRL, DA7219_CP_EN_MASK,
189                             DA7219_CP_EN_MASK);
190         snd_soc_component_update_bits(component, DA7219_DIG_ROUTING_DAC,
191                             DA7219_DAC_L_SRC_MASK | DA7219_DAC_R_SRC_MASK,
192                             DA7219_DAC_L_SRC_TONEGEN |
193                             DA7219_DAC_R_SRC_TONEGEN);
194         snd_soc_component_update_bits(component, DA7219_DAC_L_CTRL,
195                             DA7219_DAC_L_EN_MASK | DA7219_DAC_L_MUTE_EN_MASK,
196                             DA7219_DAC_L_EN_MASK);
197         snd_soc_component_update_bits(component, DA7219_DAC_R_CTRL,
198                             DA7219_DAC_R_EN_MASK | DA7219_DAC_R_MUTE_EN_MASK,
199                             DA7219_DAC_R_EN_MASK);
200         snd_soc_component_update_bits(component, DA7219_MIXOUT_L_SELECT,
201                             DA7219_MIXOUT_L_MIX_SELECT_MASK,
202                             DA7219_MIXOUT_L_MIX_SELECT_MASK);
203         snd_soc_component_update_bits(component, DA7219_MIXOUT_R_SELECT,
204                             DA7219_MIXOUT_R_MIX_SELECT_MASK,
205                             DA7219_MIXOUT_R_MIX_SELECT_MASK);
206         snd_soc_component_update_bits(component, DA7219_DROUTING_ST_OUTFILT_1L,
207                             DA7219_OUTFILT_ST_1L_SRC_MASK,
208                             DA7219_DMIX_ST_SRC_OUTFILT1L);
209         snd_soc_component_update_bits(component, DA7219_DROUTING_ST_OUTFILT_1R,
210                             DA7219_OUTFILT_ST_1R_SRC_MASK,
211                             DA7219_DMIX_ST_SRC_OUTFILT1R);
212         snd_soc_component_update_bits(component, DA7219_MIXOUT_L_CTRL,
213                             DA7219_MIXOUT_L_AMP_EN_MASK,
214                             DA7219_MIXOUT_L_AMP_EN_MASK);
215         snd_soc_component_update_bits(component, DA7219_MIXOUT_R_CTRL,
216                             DA7219_MIXOUT_R_AMP_EN_MASK,
217                             DA7219_MIXOUT_R_AMP_EN_MASK);
218         snd_soc_component_update_bits(component, DA7219_HP_L_CTRL,
219                             DA7219_HP_L_AMP_OE_MASK | DA7219_HP_L_AMP_EN_MASK,
220                             DA7219_HP_L_AMP_OE_MASK | DA7219_HP_L_AMP_EN_MASK);
221         snd_soc_component_update_bits(component, DA7219_HP_R_CTRL,
222                             DA7219_HP_R_AMP_OE_MASK | DA7219_HP_R_AMP_EN_MASK,
223                             DA7219_HP_R_AMP_OE_MASK | DA7219_HP_R_AMP_EN_MASK);
224         msleep(DA7219_SETTLING_DELAY);
225         snd_soc_component_update_bits(component, DA7219_HP_L_CTRL,
226                             DA7219_HP_L_AMP_MUTE_EN_MASK |
227                             DA7219_HP_L_AMP_MIN_GAIN_EN_MASK, 0);
228         snd_soc_component_update_bits(component, DA7219_HP_R_CTRL,
229                             DA7219_HP_R_AMP_MUTE_EN_MASK |
230                             DA7219_HP_R_AMP_MIN_GAIN_EN_MASK, 0);
231 
232         /*
233          * If we're running from the internal oscillator then give audio paths
234          * time to settle before running test.
235          */
236         if (!(pll_srm_sts & DA7219_PLL_SRM_STS_MCLK))
237                 msleep(DA7219_AAD_HPTEST_INT_OSC_PATH_DELAY);
238 
239         /* Configure & start Tone Generator */
240         snd_soc_component_write(component, DA7219_TONE_GEN_ON_PER, DA7219_BEEP_ON_PER_MASK);
241         regmap_raw_write(da7219->regmap, DA7219_TONE_GEN_FREQ1_L,
242                          &tonegen_freq_hptest, sizeof(tonegen_freq_hptest));
243         snd_soc_component_update_bits(component, DA7219_TONE_GEN_CFG2,
244                             DA7219_SWG_SEL_MASK | DA7219_TONE_GEN_GAIN_MASK,
245                             DA7219_SWG_SEL_SRAMP |
246                             DA7219_TONE_GEN_GAIN_MINUS_15DB);
247         snd_soc_component_write(component, DA7219_TONE_GEN_CFG1, DA7219_START_STOPN_MASK);
248 
249         msleep(DA7219_AAD_HPTEST_PERIOD);
250 
251         /* Grab comparator reading */
252         accdet_cfg8 = snd_soc_component_read32(component, DA7219_ACCDET_CONFIG_8);
253         if (accdet_cfg8 & DA7219_HPTEST_COMP_MASK)
254                 report |= SND_JACK_HEADPHONE;
255         else
256                 report |= SND_JACK_LINEOUT;
257 
258         /* Stop tone generator */
259         snd_soc_component_write(component, DA7219_TONE_GEN_CFG1, 0);
260 
261         msleep(DA7219_AAD_HPTEST_PERIOD);
262 
263         /* Restore original settings from cache */
264         regcache_mark_dirty(da7219->regmap);
265         regcache_sync_region(da7219->regmap, DA7219_HP_L_CTRL,
266                              DA7219_HP_R_CTRL);
267         msleep(DA7219_SETTLING_DELAY);
268         regcache_sync_region(da7219->regmap, DA7219_MIXOUT_L_CTRL,
269                              DA7219_MIXOUT_R_CTRL);
270         regcache_sync_region(da7219->regmap, DA7219_DROUTING_ST_OUTFILT_1L,
271                              DA7219_DROUTING_ST_OUTFILT_1R);
272         regcache_sync_region(da7219->regmap, DA7219_MIXOUT_L_SELECT,
273                              DA7219_MIXOUT_R_SELECT);
274         regcache_sync_region(da7219->regmap, DA7219_DAC_L_CTRL,
275                              DA7219_DAC_R_CTRL);
276         regcache_sync_region(da7219->regmap, DA7219_DIG_ROUTING_DAC,
277                              DA7219_DIG_ROUTING_DAC);
278         regcache_sync_region(da7219->regmap, DA7219_CP_CTRL, DA7219_CP_CTRL);
279         regcache_sync_region(da7219->regmap, DA7219_DAC_FILTERS5,
280                              DA7219_DAC_FILTERS5);
281         regcache_sync_region(da7219->regmap, DA7219_DAC_FILTERS4,
282                              DA7219_DAC_FILTERS1);
283         regcache_sync_region(da7219->regmap, DA7219_HP_L_GAIN,
284                              DA7219_HP_R_GAIN);
285         regcache_sync_region(da7219->regmap, DA7219_DAC_L_GAIN,
286                              DA7219_DAC_R_GAIN);
287         regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_ON_PER,
288                              DA7219_TONE_GEN_ON_PER);
289         regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_FREQ1_L,
290                              DA7219_TONE_GEN_FREQ1_U);
291         regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_CFG1,
292                              DA7219_TONE_GEN_CFG2);
293 
294         regcache_cache_bypass(da7219->regmap, false);
295 
296         /* Disable HPTest block */
297         snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_8,
298                             DA7219_HPTEST_EN_MASK, 0);
299 
300         /*
301          * If we're running from the internal oscillator then give audio paths
302          * time to settle before allowing headphones to be driven as required.
303          */
304         if (!(pll_srm_sts & DA7219_PLL_SRM_STS_MCLK))
305                 msleep(DA7219_AAD_HPTEST_INT_OSC_PATH_DELAY);
306 
307         /* Restore gain ramping rate */
308         snd_soc_component_write(component, DA7219_GAIN_RAMP_CTRL, gain_ramp_ctrl);
309 
310         /* Drive Headphones/lineout */
311         snd_soc_component_update_bits(component, DA7219_HP_L_CTRL, DA7219_HP_L_AMP_OE_MASK,
312                             DA7219_HP_L_AMP_OE_MASK);
313         snd_soc_component_update_bits(component, DA7219_HP_R_CTRL, DA7219_HP_R_AMP_OE_MASK,
314                             DA7219_HP_R_AMP_OE_MASK);
315 
316         /* Restore PLL to previous configuration, if re-configured */
317         if ((pll_srm_sts & DA7219_PLL_SRM_STS_MCLK) &&
318             ((pll_ctrl & DA7219_PLL_MODE_MASK) == DA7219_PLL_MODE_BYPASS))
319                 da7219_set_pll(component, DA7219_SYSCLK_MCLK, 0);
320 
321         /* Remove MCLK, if previously enabled */
322         if (da7219->mclk)
323                 clk_disable_unprepare(da7219->mclk);
324 
325         mutex_unlock(&da7219->pll_lock);
326         mutex_unlock(&da7219->ctrl_lock);
327         snd_soc_dapm_mutex_unlock(dapm);
328 
329         /*
330          * Only send report if jack hasn't been removed during process,
331          * otherwise it's invalid and we drop it.
332          */
333         if (da7219_aad->jack_inserted)
334                 snd_soc_jack_report(da7219_aad->jack, report,
335                                     SND_JACK_HEADSET | SND_JACK_LINEOUT);
336 }
337 
338 
339 /*
340  * IRQ
341  */
342 
343 static irqreturn_t da7219_aad_irq_thread(int irq, void *data)
344 {
345         struct da7219_aad_priv *da7219_aad = data;
346         struct snd_soc_component *component = da7219_aad->component;
347         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
348         struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
349         u8 events[DA7219_AAD_IRQ_REG_MAX];
350         u8 statusa;
351         int i, report = 0, mask = 0;
352 
353         /* Read current IRQ events */
354         regmap_bulk_read(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A,
355                          events, DA7219_AAD_IRQ_REG_MAX);
356 
357         if (!events[DA7219_AAD_IRQ_REG_A] && !events[DA7219_AAD_IRQ_REG_B])
358                 return IRQ_NONE;
359 
360         /* Read status register for jack insertion & type status */
361         statusa = snd_soc_component_read32(component, DA7219_ACCDET_STATUS_A);
362 
363         /* Clear events */
364         regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A,
365                           events, DA7219_AAD_IRQ_REG_MAX);
366 
367         dev_dbg(component->dev, "IRQ events = 0x%x|0x%x, status = 0x%x\n",
368                 events[DA7219_AAD_IRQ_REG_A], events[DA7219_AAD_IRQ_REG_B],
369                 statusa);
370 
371         if (statusa & DA7219_JACK_INSERTION_STS_MASK) {
372                 /* Jack Insertion */
373                 if (events[DA7219_AAD_IRQ_REG_A] &
374                     DA7219_E_JACK_INSERTED_MASK) {
375                         report |= SND_JACK_MECHANICAL;
376                         mask |= SND_JACK_MECHANICAL;
377                         da7219_aad->jack_inserted = true;
378                 }
379 
380                 /* Jack type detection */
381                 if (events[DA7219_AAD_IRQ_REG_A] &
382                     DA7219_E_JACK_DETECT_COMPLETE_MASK) {
383                         /*
384                          * If 4-pole, then enable button detection, else perform
385                          * HP impedance test to determine output type to report.
386                          *
387                          * We schedule work here as the tasks themselves can
388                          * take time to complete, and in particular for hptest
389                          * we want to be able to check if the jack was removed
390                          * during the procedure as this will invalidate the
391                          * result. By doing this as work, the IRQ thread can
392                          * handle a removal, and we can check at the end of
393                          * hptest if we have a valid result or not.
394                          */
395                         if (statusa & DA7219_JACK_TYPE_STS_MASK) {
396                                 report |= SND_JACK_HEADSET;
397                                 mask |= SND_JACK_HEADSET | SND_JACK_LINEOUT;
398                                 schedule_work(&da7219_aad->btn_det_work);
399                         } else {
400                                 schedule_work(&da7219_aad->hptest_work);
401                         }
402                 }
403 
404                 /* Button support for 4-pole jack */
405                 if (statusa & DA7219_JACK_TYPE_STS_MASK) {
406                         for (i = 0; i < DA7219_AAD_MAX_BUTTONS; ++i) {
407                                 /* Button Press */
408                                 if (events[DA7219_AAD_IRQ_REG_B] &
409                                     (DA7219_E_BUTTON_A_PRESSED_MASK << i)) {
410                                         report |= SND_JACK_BTN_0 >> i;
411                                         mask |= SND_JACK_BTN_0 >> i;
412                                 }
413                         }
414                         snd_soc_jack_report(da7219_aad->jack, report, mask);
415 
416                         for (i = 0; i < DA7219_AAD_MAX_BUTTONS; ++i) {
417                                 /* Button Release */
418                                 if (events[DA7219_AAD_IRQ_REG_B] &
419                                     (DA7219_E_BUTTON_A_RELEASED_MASK >> i)) {
420                                         report &= ~(SND_JACK_BTN_0 >> i);
421                                         mask |= SND_JACK_BTN_0 >> i;
422                                 }
423                         }
424                 }
425         } else {
426                 /* Jack removal */
427                 if (events[DA7219_AAD_IRQ_REG_A] & DA7219_E_JACK_REMOVED_MASK) {
428                         report = 0;
429                         mask |= DA7219_AAD_REPORT_ALL_MASK;
430                         da7219_aad->jack_inserted = false;
431 
432                         /* Un-drive headphones/lineout */
433                         snd_soc_component_update_bits(component, DA7219_HP_R_CTRL,
434                                             DA7219_HP_R_AMP_OE_MASK, 0);
435                         snd_soc_component_update_bits(component, DA7219_HP_L_CTRL,
436                                             DA7219_HP_L_AMP_OE_MASK, 0);
437 
438                         /* Ensure button detection disabled */
439                         snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
440                                             DA7219_BUTTON_CONFIG_MASK, 0);
441 
442                         /* Disable mic bias */
443                         snd_soc_dapm_disable_pin(dapm, "Mic Bias");
444                         snd_soc_dapm_sync(dapm);
445 
446                         /* Cancel any pending work */
447                         cancel_work_sync(&da7219_aad->btn_det_work);
448                         cancel_work_sync(&da7219_aad->hptest_work);
449                 }
450         }
451 
452         snd_soc_jack_report(da7219_aad->jack, report, mask);
453 
454         return IRQ_HANDLED;
455 }
456 
457 /*
458  * DT/ACPI to pdata conversion
459  */
460 
461 static enum da7219_aad_micbias_pulse_lvl
462         da7219_aad_fw_micbias_pulse_lvl(struct snd_soc_component *component, u32 val)
463 {
464         switch (val) {
465         case 2800:
466                 return DA7219_AAD_MICBIAS_PULSE_LVL_2_8V;
467         case 2900:
468                 return DA7219_AAD_MICBIAS_PULSE_LVL_2_9V;
469         default:
470                 dev_warn(component->dev, "Invalid micbias pulse level");
471                 return DA7219_AAD_MICBIAS_PULSE_LVL_OFF;
472         }
473 }
474 
475 static enum da7219_aad_btn_cfg
476         da7219_aad_fw_btn_cfg(struct snd_soc_component *component, u32 val)
477 {
478         switch (val) {
479         case 2:
480                 return DA7219_AAD_BTN_CFG_2MS;
481         case 5:
482                 return DA7219_AAD_BTN_CFG_5MS;
483         case 10:
484                 return DA7219_AAD_BTN_CFG_10MS;
485         case 50:
486                 return DA7219_AAD_BTN_CFG_50MS;
487         case 100:
488                 return DA7219_AAD_BTN_CFG_100MS;
489         case 200:
490                 return DA7219_AAD_BTN_CFG_200MS;
491         case 500:
492                 return DA7219_AAD_BTN_CFG_500MS;
493         default:
494                 dev_warn(component->dev, "Invalid button config");
495                 return DA7219_AAD_BTN_CFG_10MS;
496         }
497 }
498 
499 static enum da7219_aad_mic_det_thr
500         da7219_aad_fw_mic_det_thr(struct snd_soc_component *component, u32 val)
501 {
502         switch (val) {
503         case 200:
504                 return DA7219_AAD_MIC_DET_THR_200_OHMS;
505         case 500:
506                 return DA7219_AAD_MIC_DET_THR_500_OHMS;
507         case 750:
508                 return DA7219_AAD_MIC_DET_THR_750_OHMS;
509         case 1000:
510                 return DA7219_AAD_MIC_DET_THR_1000_OHMS;
511         default:
512                 dev_warn(component->dev, "Invalid mic detect threshold");
513                 return DA7219_AAD_MIC_DET_THR_500_OHMS;
514         }
515 }
516 
517 static enum da7219_aad_jack_ins_deb
518         da7219_aad_fw_jack_ins_deb(struct snd_soc_component *component, u32 val)
519 {
520         switch (val) {
521         case 5:
522                 return DA7219_AAD_JACK_INS_DEB_5MS;
523         case 10:
524                 return DA7219_AAD_JACK_INS_DEB_10MS;
525         case 20:
526                 return DA7219_AAD_JACK_INS_DEB_20MS;
527         case 50:
528                 return DA7219_AAD_JACK_INS_DEB_50MS;
529         case 100:
530                 return DA7219_AAD_JACK_INS_DEB_100MS;
531         case 200:
532                 return DA7219_AAD_JACK_INS_DEB_200MS;
533         case 500:
534                 return DA7219_AAD_JACK_INS_DEB_500MS;
535         case 1000:
536                 return DA7219_AAD_JACK_INS_DEB_1S;
537         default:
538                 dev_warn(component->dev, "Invalid jack insert debounce");
539                 return DA7219_AAD_JACK_INS_DEB_20MS;
540         }
541 }
542 
543 static enum da7219_aad_jack_det_rate
544         da7219_aad_fw_jack_det_rate(struct snd_soc_component *component, const char *str)
545 {
546         if (!strcmp(str, "32ms_64ms")) {
547                 return DA7219_AAD_JACK_DET_RATE_32_64MS;
548         } else if (!strcmp(str, "64ms_128ms")) {
549                 return DA7219_AAD_JACK_DET_RATE_64_128MS;
550         } else if (!strcmp(str, "128ms_256ms")) {
551                 return DA7219_AAD_JACK_DET_RATE_128_256MS;
552         } else if (!strcmp(str, "256ms_512ms")) {
553                 return DA7219_AAD_JACK_DET_RATE_256_512MS;
554         } else {
555                 dev_warn(component->dev, "Invalid jack detect rate");
556                 return DA7219_AAD_JACK_DET_RATE_256_512MS;
557         }
558 }
559 
560 static enum da7219_aad_jack_rem_deb
561         da7219_aad_fw_jack_rem_deb(struct snd_soc_component *component, u32 val)
562 {
563         switch (val) {
564         case 1:
565                 return DA7219_AAD_JACK_REM_DEB_1MS;
566         case 5:
567                 return DA7219_AAD_JACK_REM_DEB_5MS;
568         case 10:
569                 return DA7219_AAD_JACK_REM_DEB_10MS;
570         case 20:
571                 return DA7219_AAD_JACK_REM_DEB_20MS;
572         default:
573                 dev_warn(component->dev, "Invalid jack removal debounce");
574                 return DA7219_AAD_JACK_REM_DEB_1MS;
575         }
576 }
577 
578 static enum da7219_aad_btn_avg
579         da7219_aad_fw_btn_avg(struct snd_soc_component *component, u32 val)
580 {
581         switch (val) {
582         case 1:
583                 return DA7219_AAD_BTN_AVG_1;
584         case 2:
585                 return DA7219_AAD_BTN_AVG_2;
586         case 4:
587                 return DA7219_AAD_BTN_AVG_4;
588         case 8:
589                 return DA7219_AAD_BTN_AVG_8;
590         default:
591                 dev_warn(component->dev, "Invalid button average value");
592                 return DA7219_AAD_BTN_AVG_2;
593         }
594 }
595 
596 static enum da7219_aad_adc_1bit_rpt
597         da7219_aad_fw_adc_1bit_rpt(struct snd_soc_component *component, u32 val)
598 {
599         switch (val) {
600         case 1:
601                 return DA7219_AAD_ADC_1BIT_RPT_1;
602         case 2:
603                 return DA7219_AAD_ADC_1BIT_RPT_2;
604         case 4:
605                 return DA7219_AAD_ADC_1BIT_RPT_4;
606         case 8:
607                 return DA7219_AAD_ADC_1BIT_RPT_8;
608         default:
609                 dev_warn(component->dev, "Invalid ADC 1-bit repeat value");
610                 return DA7219_AAD_ADC_1BIT_RPT_1;
611         }
612 }
613 
614 static struct da7219_aad_pdata *da7219_aad_fw_to_pdata(struct snd_soc_component *component)
615 {
616         struct device *dev = component->dev;
617         struct i2c_client *i2c = to_i2c_client(dev);
618         struct fwnode_handle *aad_np;
619         struct da7219_aad_pdata *aad_pdata;
620         const char *fw_str;
621         u32 fw_val32;
622 
623         aad_np = device_get_named_child_node(dev, "da7219_aad");
624         if (!aad_np)
625                 return NULL;
626 
627         aad_pdata = devm_kzalloc(dev, sizeof(*aad_pdata), GFP_KERNEL);
628         if (!aad_pdata)
629                 return NULL;
630 
631         aad_pdata->irq = i2c->irq;
632 
633         if (fwnode_property_read_u32(aad_np, "dlg,micbias-pulse-lvl",
634                                      &fw_val32) >= 0)
635                 aad_pdata->micbias_pulse_lvl =
636                         da7219_aad_fw_micbias_pulse_lvl(component, fw_val32);
637         else
638                 aad_pdata->micbias_pulse_lvl = DA7219_AAD_MICBIAS_PULSE_LVL_OFF;
639 
640         if (fwnode_property_read_u32(aad_np, "dlg,micbias-pulse-time",
641                                      &fw_val32) >= 0)
642                 aad_pdata->micbias_pulse_time = fw_val32;
643 
644         if (fwnode_property_read_u32(aad_np, "dlg,btn-cfg", &fw_val32) >= 0)
645                 aad_pdata->btn_cfg = da7219_aad_fw_btn_cfg(component, fw_val32);
646         else
647                 aad_pdata->btn_cfg = DA7219_AAD_BTN_CFG_10MS;
648 
649         if (fwnode_property_read_u32(aad_np, "dlg,mic-det-thr", &fw_val32) >= 0)
650                 aad_pdata->mic_det_thr =
651                         da7219_aad_fw_mic_det_thr(component, fw_val32);
652         else
653                 aad_pdata->mic_det_thr = DA7219_AAD_MIC_DET_THR_500_OHMS;
654 
655         if (fwnode_property_read_u32(aad_np, "dlg,jack-ins-deb", &fw_val32) >= 0)
656                 aad_pdata->jack_ins_deb =
657                         da7219_aad_fw_jack_ins_deb(component, fw_val32);
658         else
659                 aad_pdata->jack_ins_deb = DA7219_AAD_JACK_INS_DEB_20MS;
660 
661         if (!fwnode_property_read_string(aad_np, "dlg,jack-det-rate", &fw_str))
662                 aad_pdata->jack_det_rate =
663                         da7219_aad_fw_jack_det_rate(component, fw_str);
664         else
665                 aad_pdata->jack_det_rate = DA7219_AAD_JACK_DET_RATE_256_512MS;
666 
667         if (fwnode_property_read_u32(aad_np, "dlg,jack-rem-deb", &fw_val32) >= 0)
668                 aad_pdata->jack_rem_deb =
669                         da7219_aad_fw_jack_rem_deb(component, fw_val32);
670         else
671                 aad_pdata->jack_rem_deb = DA7219_AAD_JACK_REM_DEB_1MS;
672 
673         if (fwnode_property_read_u32(aad_np, "dlg,a-d-btn-thr", &fw_val32) >= 0)
674                 aad_pdata->a_d_btn_thr = (u8) fw_val32;
675         else
676                 aad_pdata->a_d_btn_thr = 0xA;
677 
678         if (fwnode_property_read_u32(aad_np, "dlg,d-b-btn-thr", &fw_val32) >= 0)
679                 aad_pdata->d_b_btn_thr = (u8) fw_val32;
680         else
681                 aad_pdata->d_b_btn_thr = 0x16;
682 
683         if (fwnode_property_read_u32(aad_np, "dlg,b-c-btn-thr", &fw_val32) >= 0)
684                 aad_pdata->b_c_btn_thr = (u8) fw_val32;
685         else
686                 aad_pdata->b_c_btn_thr = 0x21;
687 
688         if (fwnode_property_read_u32(aad_np, "dlg,c-mic-btn-thr", &fw_val32) >= 0)
689                 aad_pdata->c_mic_btn_thr = (u8) fw_val32;
690         else
691                 aad_pdata->c_mic_btn_thr = 0x3E;
692 
693         if (fwnode_property_read_u32(aad_np, "dlg,btn-avg", &fw_val32) >= 0)
694                 aad_pdata->btn_avg = da7219_aad_fw_btn_avg(component, fw_val32);
695         else
696                 aad_pdata->btn_avg = DA7219_AAD_BTN_AVG_2;
697 
698         if (fwnode_property_read_u32(aad_np, "dlg,adc-1bit-rpt", &fw_val32) >= 0)
699                 aad_pdata->adc_1bit_rpt =
700                         da7219_aad_fw_adc_1bit_rpt(component, fw_val32);
701         else
702                 aad_pdata->adc_1bit_rpt = DA7219_AAD_ADC_1BIT_RPT_1;
703 
704         return aad_pdata;
705 }
706 
707 static void da7219_aad_handle_pdata(struct snd_soc_component *component)
708 {
709         struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
710         struct da7219_aad_priv *da7219_aad = da7219->aad;
711         struct da7219_pdata *pdata = da7219->pdata;
712 
713         if ((pdata) && (pdata->aad_pdata)) {
714                 struct da7219_aad_pdata *aad_pdata = pdata->aad_pdata;
715                 u8 cfg, mask;
716 
717                 da7219_aad->irq = aad_pdata->irq;
718 
719                 switch (aad_pdata->micbias_pulse_lvl) {
720                 case DA7219_AAD_MICBIAS_PULSE_LVL_2_8V:
721                 case DA7219_AAD_MICBIAS_PULSE_LVL_2_9V:
722                         da7219_aad->micbias_pulse_lvl =
723                                 (aad_pdata->micbias_pulse_lvl <<
724                                  DA7219_MICBIAS1_LEVEL_SHIFT);
725                         break;
726                 default:
727                         break;
728                 }
729 
730                 da7219_aad->micbias_pulse_time = aad_pdata->micbias_pulse_time;
731 
732                 switch (aad_pdata->btn_cfg) {
733                 case DA7219_AAD_BTN_CFG_2MS:
734                 case DA7219_AAD_BTN_CFG_5MS:
735                 case DA7219_AAD_BTN_CFG_10MS:
736                 case DA7219_AAD_BTN_CFG_50MS:
737                 case DA7219_AAD_BTN_CFG_100MS:
738                 case DA7219_AAD_BTN_CFG_200MS:
739                 case DA7219_AAD_BTN_CFG_500MS:
740                         da7219_aad->btn_cfg  = (aad_pdata->btn_cfg <<
741                                                 DA7219_BUTTON_CONFIG_SHIFT);
742                 }
743 
744                 cfg = 0;
745                 mask = 0;
746                 switch (aad_pdata->mic_det_thr) {
747                 case DA7219_AAD_MIC_DET_THR_200_OHMS:
748                 case DA7219_AAD_MIC_DET_THR_500_OHMS:
749                 case DA7219_AAD_MIC_DET_THR_750_OHMS:
750                 case DA7219_AAD_MIC_DET_THR_1000_OHMS:
751                         cfg |= (aad_pdata->mic_det_thr <<
752                                 DA7219_MIC_DET_THRESH_SHIFT);
753                         mask |= DA7219_MIC_DET_THRESH_MASK;
754                 }
755                 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1, mask, cfg);
756 
757                 cfg = 0;
758                 mask = 0;
759                 switch (aad_pdata->jack_ins_deb) {
760                 case DA7219_AAD_JACK_INS_DEB_5MS:
761                 case DA7219_AAD_JACK_INS_DEB_10MS:
762                 case DA7219_AAD_JACK_INS_DEB_20MS:
763                 case DA7219_AAD_JACK_INS_DEB_50MS:
764                 case DA7219_AAD_JACK_INS_DEB_100MS:
765                 case DA7219_AAD_JACK_INS_DEB_200MS:
766                 case DA7219_AAD_JACK_INS_DEB_500MS:
767                 case DA7219_AAD_JACK_INS_DEB_1S:
768                         cfg |= (aad_pdata->jack_ins_deb <<
769                                 DA7219_JACKDET_DEBOUNCE_SHIFT);
770                         mask |= DA7219_JACKDET_DEBOUNCE_MASK;
771                 }
772                 switch (aad_pdata->jack_det_rate) {
773                 case DA7219_AAD_JACK_DET_RATE_32_64MS:
774                 case DA7219_AAD_JACK_DET_RATE_64_128MS:
775                 case DA7219_AAD_JACK_DET_RATE_128_256MS:
776                 case DA7219_AAD_JACK_DET_RATE_256_512MS:
777                         cfg |= (aad_pdata->jack_det_rate <<
778                                 DA7219_JACK_DETECT_RATE_SHIFT);
779                         mask |= DA7219_JACK_DETECT_RATE_MASK;
780                 }
781                 switch (aad_pdata->jack_rem_deb) {
782                 case DA7219_AAD_JACK_REM_DEB_1MS:
783                 case DA7219_AAD_JACK_REM_DEB_5MS:
784                 case DA7219_AAD_JACK_REM_DEB_10MS:
785                 case DA7219_AAD_JACK_REM_DEB_20MS:
786                         cfg |= (aad_pdata->jack_rem_deb <<
787                                 DA7219_JACKDET_REM_DEB_SHIFT);
788                         mask |= DA7219_JACKDET_REM_DEB_MASK;
789                 }
790                 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_2, mask, cfg);
791 
792                 snd_soc_component_write(component, DA7219_ACCDET_CONFIG_3,
793                               aad_pdata->a_d_btn_thr);
794                 snd_soc_component_write(component, DA7219_ACCDET_CONFIG_4,
795                               aad_pdata->d_b_btn_thr);
796                 snd_soc_component_write(component, DA7219_ACCDET_CONFIG_5,
797                               aad_pdata->b_c_btn_thr);
798                 snd_soc_component_write(component, DA7219_ACCDET_CONFIG_6,
799                               aad_pdata->c_mic_btn_thr);
800 
801                 cfg = 0;
802                 mask = 0;
803                 switch (aad_pdata->btn_avg) {
804                 case DA7219_AAD_BTN_AVG_1:
805                 case DA7219_AAD_BTN_AVG_2:
806                 case DA7219_AAD_BTN_AVG_4:
807                 case DA7219_AAD_BTN_AVG_8:
808                         cfg |= (aad_pdata->btn_avg <<
809                                 DA7219_BUTTON_AVERAGE_SHIFT);
810                         mask |= DA7219_BUTTON_AVERAGE_MASK;
811                 }
812                 switch (aad_pdata->adc_1bit_rpt) {
813                 case DA7219_AAD_ADC_1BIT_RPT_1:
814                 case DA7219_AAD_ADC_1BIT_RPT_2:
815                 case DA7219_AAD_ADC_1BIT_RPT_4:
816                 case DA7219_AAD_ADC_1BIT_RPT_8:
817                         cfg |= (aad_pdata->adc_1bit_rpt <<
818                                DA7219_ADC_1_BIT_REPEAT_SHIFT);
819                         mask |= DA7219_ADC_1_BIT_REPEAT_MASK;
820                 }
821                 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_7, mask, cfg);
822         }
823 }
824 
825 
826 /*
827  * Suspend/Resume
828  */
829 
830 void da7219_aad_suspend(struct snd_soc_component *component)
831 {
832         struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
833         struct da7219_aad_priv *da7219_aad = da7219->aad;
834         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
835         u8 micbias_ctrl;
836 
837         if (da7219_aad->jack) {
838                 /* Disable jack detection during suspend */
839                 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
840                                     DA7219_ACCDET_EN_MASK, 0);
841 
842                 /*
843                  * If we have a 4-pole jack inserted, then micbias will be
844                  * enabled. We can disable micbias here, and keep a note to
845                  * re-enable it on resume. If jack removal occurred during
846                  * suspend then this will be dealt with through the IRQ handler.
847                  */
848                 if (da7219_aad->jack_inserted) {
849                         micbias_ctrl = snd_soc_component_read32(component, DA7219_MICBIAS_CTRL);
850                         if (micbias_ctrl & DA7219_MICBIAS1_EN_MASK) {
851                                 snd_soc_dapm_disable_pin(dapm, "Mic Bias");
852                                 snd_soc_dapm_sync(dapm);
853                                 da7219_aad->micbias_resume_enable = true;
854                         }
855                 }
856         }
857 }
858 
859 void da7219_aad_resume(struct snd_soc_component *component)
860 {
861         struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
862         struct da7219_aad_priv *da7219_aad = da7219->aad;
863         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
864 
865         if (da7219_aad->jack) {
866                 /* Re-enable micbias if previously enabled for 4-pole jack */
867                 if (da7219_aad->jack_inserted &&
868                     da7219_aad->micbias_resume_enable) {
869                         snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
870                         snd_soc_dapm_sync(dapm);
871                         da7219_aad->micbias_resume_enable = false;
872                 }
873 
874                 /* Re-enable jack detection */
875                 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
876                                     DA7219_ACCDET_EN_MASK,
877                                     DA7219_ACCDET_EN_MASK);
878         }
879 }
880 
881 
882 /*
883  * Init/Exit
884  */
885 
886 int da7219_aad_init(struct snd_soc_component *component)
887 {
888         struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
889         struct da7219_aad_priv *da7219_aad;
890         u8 mask[DA7219_AAD_IRQ_REG_MAX];
891         int ret;
892 
893         da7219_aad = devm_kzalloc(component->dev, sizeof(*da7219_aad), GFP_KERNEL);
894         if (!da7219_aad)
895                 return -ENOMEM;
896 
897         da7219->aad = da7219_aad;
898         da7219_aad->component = component;
899 
900         /* Handle any DT/ACPI/platform data */
901         if (da7219->pdata && !da7219->pdata->aad_pdata)
902                 da7219->pdata->aad_pdata = da7219_aad_fw_to_pdata(component);
903 
904         da7219_aad_handle_pdata(component);
905 
906         /* Disable button detection */
907         snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
908                             DA7219_BUTTON_CONFIG_MASK, 0);
909 
910         INIT_WORK(&da7219_aad->btn_det_work, da7219_aad_btn_det_work);
911         INIT_WORK(&da7219_aad->hptest_work, da7219_aad_hptest_work);
912 
913         ret = request_threaded_irq(da7219_aad->irq, NULL,
914                                    da7219_aad_irq_thread,
915                                    IRQF_TRIGGER_LOW | IRQF_ONESHOT,
916                                    "da7219-aad", da7219_aad);
917         if (ret) {
918                 dev_err(component->dev, "Failed to request IRQ: %d\n", ret);
919                 return ret;
920         }
921 
922         /* Unmask AAD IRQs */
923         memset(mask, 0, DA7219_AAD_IRQ_REG_MAX);
924         regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_MASK_A,
925                           &mask, DA7219_AAD_IRQ_REG_MAX);
926 
927         return 0;
928 }
929 EXPORT_SYMBOL_GPL(da7219_aad_init);
930 
931 void da7219_aad_exit(struct snd_soc_component *component)
932 {
933         struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
934         struct da7219_aad_priv *da7219_aad = da7219->aad;
935         u8 mask[DA7219_AAD_IRQ_REG_MAX];
936 
937         /* Mask off AAD IRQs */
938         memset(mask, DA7219_BYTE_MASK, DA7219_AAD_IRQ_REG_MAX);
939         regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_MASK_A,
940                           mask, DA7219_AAD_IRQ_REG_MAX);
941 
942         free_irq(da7219_aad->irq, da7219_aad);
943 
944         cancel_work_sync(&da7219_aad->btn_det_work);
945         cancel_work_sync(&da7219_aad->hptest_work);
946 }
947 EXPORT_SYMBOL_GPL(da7219_aad_exit);
948 
949 MODULE_DESCRIPTION("ASoC DA7219 AAD Driver");
950 MODULE_AUTHOR("Adam Thomson <Adam.Thomson.Opensource@diasemi.com>");
951 MODULE_LICENSE("GPL");
952 

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