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
da7219_aad_jack_det(struct snd_soc_codec * codec,struct snd_soc_jack * jack)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
da7219_aad_btn_det_work(struct work_struct * work)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
da7219_aad_hptest_work(struct work_struct * work)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_write(codec, DA7219_HP_L_CTRL,
208 DA7219_HP_L_AMP_OE_MASK | DA7219_HP_L_AMP_EN_MASK);
209 snd_soc_write(codec, DA7219_HP_R_CTRL,
210 DA7219_HP_R_AMP_OE_MASK | DA7219_HP_R_AMP_EN_MASK);
211
212 /*
213 * If we're running from the internal oscillator then give audio paths
214 * time to settle before running test.
215 */
216 if (!(pll_srm_sts & DA7219_PLL_SRM_STS_MCLK))
217 msleep(DA7219_AAD_HPTEST_INT_OSC_PATH_DELAY);
218
219 /* Configure & start Tone Generator */
220 snd_soc_write(codec, DA7219_TONE_GEN_ON_PER, DA7219_BEEP_ON_PER_MASK);
221 regmap_raw_write(da7219->regmap, DA7219_TONE_GEN_FREQ1_L,
222 &tonegen_freq_hptest, sizeof(tonegen_freq_hptest));
223 snd_soc_update_bits(codec, DA7219_TONE_GEN_CFG2,
224 DA7219_SWG_SEL_MASK | DA7219_TONE_GEN_GAIN_MASK,
225 DA7219_SWG_SEL_SRAMP |
226 DA7219_TONE_GEN_GAIN_MINUS_15DB);
227 snd_soc_write(codec, DA7219_TONE_GEN_CFG1, DA7219_START_STOPN_MASK);
228
229 msleep(DA7219_AAD_HPTEST_PERIOD);
230
231 /* Grab comparator reading */
232 accdet_cfg8 = snd_soc_read(codec, DA7219_ACCDET_CONFIG_8);
233 if (accdet_cfg8 & DA7219_HPTEST_COMP_MASK)
234 report |= SND_JACK_HEADPHONE;
235 else
236 report |= SND_JACK_LINEOUT;
237
238 /* Stop tone generator */
239 snd_soc_write(codec, DA7219_TONE_GEN_CFG1, 0);
240
241 msleep(DA7219_AAD_HPTEST_PERIOD);
242
243 /* Restore original settings from cache */
244 regcache_mark_dirty(da7219->regmap);
245 regcache_sync_region(da7219->regmap, DA7219_HP_L_CTRL,
246 DA7219_HP_R_CTRL);
247 regcache_sync_region(da7219->regmap, DA7219_MIXOUT_L_CTRL,
248 DA7219_MIXOUT_R_CTRL);
249 regcache_sync_region(da7219->regmap, DA7219_DROUTING_ST_OUTFILT_1L,
250 DA7219_DROUTING_ST_OUTFILT_1R);
251 regcache_sync_region(da7219->regmap, DA7219_MIXOUT_L_SELECT,
252 DA7219_MIXOUT_R_SELECT);
253 regcache_sync_region(da7219->regmap, DA7219_DAC_L_CTRL,
254 DA7219_DAC_R_CTRL);
255 regcache_sync_region(da7219->regmap, DA7219_DIG_ROUTING_DAC,
256 DA7219_DIG_ROUTING_DAC);
257 regcache_sync_region(da7219->regmap, DA7219_CP_CTRL, DA7219_CP_CTRL);
258 regcache_sync_region(da7219->regmap, DA7219_DAC_FILTERS5,
259 DA7219_DAC_FILTERS5);
260 regcache_sync_region(da7219->regmap, DA7219_DAC_FILTERS4,
261 DA7219_DAC_FILTERS1);
262 regcache_sync_region(da7219->regmap, DA7219_HP_L_GAIN,
263 DA7219_HP_R_GAIN);
264 regcache_sync_region(da7219->regmap, DA7219_DAC_L_GAIN,
265 DA7219_DAC_R_GAIN);
266 regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_ON_PER,
267 DA7219_TONE_GEN_ON_PER);
268 regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_FREQ1_L,
269 DA7219_TONE_GEN_FREQ1_U);
270 regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_CFG1,
271 DA7219_TONE_GEN_CFG2);
272
273 regcache_cache_bypass(da7219->regmap, false);
274
275 /* Disable HPTest block */
276 snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_8,
277 DA7219_HPTEST_EN_MASK, 0);
278
279 /*
280 * If we're running from the internal oscillator then give audio paths
281 * time to settle before allowing headphones to be driven as required.
282 */
283 if (!(pll_srm_sts & DA7219_PLL_SRM_STS_MCLK))
284 msleep(DA7219_AAD_HPTEST_INT_OSC_PATH_DELAY);
285
286 /* Restore gain ramping rate */
287 snd_soc_write(codec, DA7219_GAIN_RAMP_CTRL, gain_ramp_ctrl);
288
289 /* Drive Headphones/lineout */
290 snd_soc_update_bits(codec, DA7219_HP_L_CTRL, DA7219_HP_L_AMP_OE_MASK,
291 DA7219_HP_L_AMP_OE_MASK);
292 snd_soc_update_bits(codec, DA7219_HP_R_CTRL, DA7219_HP_R_AMP_OE_MASK,
293 DA7219_HP_R_AMP_OE_MASK);
294
295 /* Remove MCLK, if previously enabled */
296 if (da7219->mclk)
297 clk_disable_unprepare(da7219->mclk);
298
299 mutex_unlock(&da7219->lock);
300 snd_soc_dapm_mutex_unlock(dapm);
301
302 /*
303 * Only send report if jack hasn't been removed during process,
304 * otherwise it's invalid and we drop it.
305 */
306 if (da7219_aad->jack_inserted)
307 snd_soc_jack_report(da7219_aad->jack, report,
308 SND_JACK_HEADSET | SND_JACK_LINEOUT);
309 }
310
311
312 /*
313 * IRQ
314 */
315
da7219_aad_irq_thread(int irq,void * data)316 static irqreturn_t da7219_aad_irq_thread(int irq, void *data)
317 {
318 struct da7219_aad_priv *da7219_aad = data;
319 struct snd_soc_codec *codec = da7219_aad->codec;
320 struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
321 struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
322 u8 events[DA7219_AAD_IRQ_REG_MAX];
323 u8 statusa;
324 int i, report = 0, mask = 0;
325
326 /* Read current IRQ events */
327 regmap_bulk_read(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A,
328 events, DA7219_AAD_IRQ_REG_MAX);
329
330 if (!events[DA7219_AAD_IRQ_REG_A] && !events[DA7219_AAD_IRQ_REG_B])
331 return IRQ_NONE;
332
333 /* Read status register for jack insertion & type status */
334 statusa = snd_soc_read(codec, DA7219_ACCDET_STATUS_A);
335
336 /* Clear events */
337 regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A,
338 events, DA7219_AAD_IRQ_REG_MAX);
339
340 dev_dbg(codec->dev, "IRQ events = 0x%x|0x%x, status = 0x%x\n",
341 events[DA7219_AAD_IRQ_REG_A], events[DA7219_AAD_IRQ_REG_B],
342 statusa);
343
344 if (statusa & DA7219_JACK_INSERTION_STS_MASK) {
345 /* Jack Insertion */
346 if (events[DA7219_AAD_IRQ_REG_A] &
347 DA7219_E_JACK_INSERTED_MASK) {
348 report |= SND_JACK_MECHANICAL;
349 mask |= SND_JACK_MECHANICAL;
350 da7219_aad->jack_inserted = true;
351 }
352
353 /* Jack type detection */
354 if (events[DA7219_AAD_IRQ_REG_A] &
355 DA7219_E_JACK_DETECT_COMPLETE_MASK) {
356 /*
357 * If 4-pole, then enable button detection, else perform
358 * HP impedance test to determine output type to report.
359 *
360 * We schedule work here as the tasks themselves can
361 * take time to complete, and in particular for hptest
362 * we want to be able to check if the jack was removed
363 * during the procedure as this will invalidate the
364 * result. By doing this as work, the IRQ thread can
365 * handle a removal, and we can check at the end of
366 * hptest if we have a valid result or not.
367 */
368 if (statusa & DA7219_JACK_TYPE_STS_MASK) {
369 report |= SND_JACK_HEADSET;
370 mask |= SND_JACK_HEADSET | SND_JACK_LINEOUT;
371 schedule_work(&da7219_aad->btn_det_work);
372 } else {
373 schedule_work(&da7219_aad->hptest_work);
374 }
375 }
376
377 /* Button support for 4-pole jack */
378 if (statusa & DA7219_JACK_TYPE_STS_MASK) {
379 for (i = 0; i < DA7219_AAD_MAX_BUTTONS; ++i) {
380 /* Button Press */
381 if (events[DA7219_AAD_IRQ_REG_B] &
382 (DA7219_E_BUTTON_A_PRESSED_MASK << i)) {
383 report |= SND_JACK_BTN_0 >> i;
384 mask |= SND_JACK_BTN_0 >> i;
385 }
386 }
387 snd_soc_jack_report(da7219_aad->jack, report, mask);
388
389 for (i = 0; i < DA7219_AAD_MAX_BUTTONS; ++i) {
390 /* Button Release */
391 if (events[DA7219_AAD_IRQ_REG_B] &
392 (DA7219_E_BUTTON_A_RELEASED_MASK >> i)) {
393 report &= ~(SND_JACK_BTN_0 >> i);
394 mask |= SND_JACK_BTN_0 >> i;
395 }
396 }
397 }
398 } else {
399 /* Jack removal */
400 if (events[DA7219_AAD_IRQ_REG_A] & DA7219_E_JACK_REMOVED_MASK) {
401 report = 0;
402 mask |= DA7219_AAD_REPORT_ALL_MASK;
403 da7219_aad->jack_inserted = false;
404
405 /* Un-drive headphones/lineout */
406 snd_soc_update_bits(codec, DA7219_HP_R_CTRL,
407 DA7219_HP_R_AMP_OE_MASK, 0);
408 snd_soc_update_bits(codec, DA7219_HP_L_CTRL,
409 DA7219_HP_L_AMP_OE_MASK, 0);
410
411 /* Ensure button detection disabled */
412 snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
413 DA7219_BUTTON_CONFIG_MASK, 0);
414
415 /* Disable mic bias */
416 snd_soc_dapm_disable_pin(dapm, "Mic Bias");
417 snd_soc_dapm_sync(dapm);
418
419 /* Cancel any pending work */
420 cancel_work_sync(&da7219_aad->btn_det_work);
421 cancel_work_sync(&da7219_aad->hptest_work);
422 }
423 }
424
425 snd_soc_jack_report(da7219_aad->jack, report, mask);
426
427 return IRQ_HANDLED;
428 }
429
430 /*
431 * DT/ACPI to pdata conversion
432 */
433
434 static enum da7219_aad_micbias_pulse_lvl
da7219_aad_fw_micbias_pulse_lvl(struct snd_soc_codec * codec,u32 val)435 da7219_aad_fw_micbias_pulse_lvl(struct snd_soc_codec *codec, u32 val)
436 {
437 switch (val) {
438 case 2800:
439 return DA7219_AAD_MICBIAS_PULSE_LVL_2_8V;
440 case 2900:
441 return DA7219_AAD_MICBIAS_PULSE_LVL_2_9V;
442 default:
443 dev_warn(codec->dev, "Invalid micbias pulse level");
444 return DA7219_AAD_MICBIAS_PULSE_LVL_OFF;
445 }
446 }
447
448 static enum da7219_aad_btn_cfg
da7219_aad_fw_btn_cfg(struct snd_soc_codec * codec,u32 val)449 da7219_aad_fw_btn_cfg(struct snd_soc_codec *codec, u32 val)
450 {
451 switch (val) {
452 case 2:
453 return DA7219_AAD_BTN_CFG_2MS;
454 case 5:
455 return DA7219_AAD_BTN_CFG_5MS;
456 case 10:
457 return DA7219_AAD_BTN_CFG_10MS;
458 case 50:
459 return DA7219_AAD_BTN_CFG_50MS;
460 case 100:
461 return DA7219_AAD_BTN_CFG_100MS;
462 case 200:
463 return DA7219_AAD_BTN_CFG_200MS;
464 case 500:
465 return DA7219_AAD_BTN_CFG_500MS;
466 default:
467 dev_warn(codec->dev, "Invalid button config");
468 return DA7219_AAD_BTN_CFG_10MS;
469 }
470 }
471
472 static enum da7219_aad_mic_det_thr
da7219_aad_fw_mic_det_thr(struct snd_soc_codec * codec,u32 val)473 da7219_aad_fw_mic_det_thr(struct snd_soc_codec *codec, u32 val)
474 {
475 switch (val) {
476 case 200:
477 return DA7219_AAD_MIC_DET_THR_200_OHMS;
478 case 500:
479 return DA7219_AAD_MIC_DET_THR_500_OHMS;
480 case 750:
481 return DA7219_AAD_MIC_DET_THR_750_OHMS;
482 case 1000:
483 return DA7219_AAD_MIC_DET_THR_1000_OHMS;
484 default:
485 dev_warn(codec->dev, "Invalid mic detect threshold");
486 return DA7219_AAD_MIC_DET_THR_500_OHMS;
487 }
488 }
489
490 static enum da7219_aad_jack_ins_deb
da7219_aad_fw_jack_ins_deb(struct snd_soc_codec * codec,u32 val)491 da7219_aad_fw_jack_ins_deb(struct snd_soc_codec *codec, u32 val)
492 {
493 switch (val) {
494 case 5:
495 return DA7219_AAD_JACK_INS_DEB_5MS;
496 case 10:
497 return DA7219_AAD_JACK_INS_DEB_10MS;
498 case 20:
499 return DA7219_AAD_JACK_INS_DEB_20MS;
500 case 50:
501 return DA7219_AAD_JACK_INS_DEB_50MS;
502 case 100:
503 return DA7219_AAD_JACK_INS_DEB_100MS;
504 case 200:
505 return DA7219_AAD_JACK_INS_DEB_200MS;
506 case 500:
507 return DA7219_AAD_JACK_INS_DEB_500MS;
508 case 1000:
509 return DA7219_AAD_JACK_INS_DEB_1S;
510 default:
511 dev_warn(codec->dev, "Invalid jack insert debounce");
512 return DA7219_AAD_JACK_INS_DEB_20MS;
513 }
514 }
515
516 static enum da7219_aad_jack_det_rate
da7219_aad_fw_jack_det_rate(struct snd_soc_codec * codec,const char * str)517 da7219_aad_fw_jack_det_rate(struct snd_soc_codec *codec, const char *str)
518 {
519 if (!strcmp(str, "32ms_64ms")) {
520 return DA7219_AAD_JACK_DET_RATE_32_64MS;
521 } else if (!strcmp(str, "64ms_128ms")) {
522 return DA7219_AAD_JACK_DET_RATE_64_128MS;
523 } else if (!strcmp(str, "128ms_256ms")) {
524 return DA7219_AAD_JACK_DET_RATE_128_256MS;
525 } else if (!strcmp(str, "256ms_512ms")) {
526 return DA7219_AAD_JACK_DET_RATE_256_512MS;
527 } else {
528 dev_warn(codec->dev, "Invalid jack detect rate");
529 return DA7219_AAD_JACK_DET_RATE_256_512MS;
530 }
531 }
532
533 static enum da7219_aad_jack_rem_deb
da7219_aad_fw_jack_rem_deb(struct snd_soc_codec * codec,u32 val)534 da7219_aad_fw_jack_rem_deb(struct snd_soc_codec *codec, u32 val)
535 {
536 switch (val) {
537 case 1:
538 return DA7219_AAD_JACK_REM_DEB_1MS;
539 case 5:
540 return DA7219_AAD_JACK_REM_DEB_5MS;
541 case 10:
542 return DA7219_AAD_JACK_REM_DEB_10MS;
543 case 20:
544 return DA7219_AAD_JACK_REM_DEB_20MS;
545 default:
546 dev_warn(codec->dev, "Invalid jack removal debounce");
547 return DA7219_AAD_JACK_REM_DEB_1MS;
548 }
549 }
550
551 static enum da7219_aad_btn_avg
da7219_aad_fw_btn_avg(struct snd_soc_codec * codec,u32 val)552 da7219_aad_fw_btn_avg(struct snd_soc_codec *codec, u32 val)
553 {
554 switch (val) {
555 case 1:
556 return DA7219_AAD_BTN_AVG_1;
557 case 2:
558 return DA7219_AAD_BTN_AVG_2;
559 case 4:
560 return DA7219_AAD_BTN_AVG_4;
561 case 8:
562 return DA7219_AAD_BTN_AVG_8;
563 default:
564 dev_warn(codec->dev, "Invalid button average value");
565 return DA7219_AAD_BTN_AVG_2;
566 }
567 }
568
569 static enum da7219_aad_adc_1bit_rpt
da7219_aad_fw_adc_1bit_rpt(struct snd_soc_codec * codec,u32 val)570 da7219_aad_fw_adc_1bit_rpt(struct snd_soc_codec *codec, u32 val)
571 {
572 switch (val) {
573 case 1:
574 return DA7219_AAD_ADC_1BIT_RPT_1;
575 case 2:
576 return DA7219_AAD_ADC_1BIT_RPT_2;
577 case 4:
578 return DA7219_AAD_ADC_1BIT_RPT_4;
579 case 8:
580 return DA7219_AAD_ADC_1BIT_RPT_8;
581 default:
582 dev_warn(codec->dev, "Invalid ADC 1-bit repeat value");
583 return DA7219_AAD_ADC_1BIT_RPT_1;
584 }
585 }
586
da7219_aad_fw_to_pdata(struct snd_soc_codec * codec)587 static struct da7219_aad_pdata *da7219_aad_fw_to_pdata(struct snd_soc_codec *codec)
588 {
589 struct device *dev = codec->dev;
590 struct i2c_client *i2c = to_i2c_client(dev);
591 struct fwnode_handle *aad_np;
592 struct da7219_aad_pdata *aad_pdata;
593 const char *fw_str;
594 u32 fw_val32;
595
596 aad_np = device_get_named_child_node(dev, "da7219_aad");
597 if (!aad_np)
598 return NULL;
599
600 aad_pdata = devm_kzalloc(codec->dev, sizeof(*aad_pdata), GFP_KERNEL);
601 if (!aad_pdata)
602 return NULL;
603
604 aad_pdata->irq = i2c->irq;
605
606 if (fwnode_property_read_u32(aad_np, "dlg,micbias-pulse-lvl",
607 &fw_val32) >= 0)
608 aad_pdata->micbias_pulse_lvl =
609 da7219_aad_fw_micbias_pulse_lvl(codec, fw_val32);
610 else
611 aad_pdata->micbias_pulse_lvl = DA7219_AAD_MICBIAS_PULSE_LVL_OFF;
612
613 if (fwnode_property_read_u32(aad_np, "dlg,micbias-pulse-time",
614 &fw_val32) >= 0)
615 aad_pdata->micbias_pulse_time = fw_val32;
616
617 if (fwnode_property_read_u32(aad_np, "dlg,btn-cfg", &fw_val32) >= 0)
618 aad_pdata->btn_cfg = da7219_aad_fw_btn_cfg(codec, fw_val32);
619 else
620 aad_pdata->btn_cfg = DA7219_AAD_BTN_CFG_10MS;
621
622 if (fwnode_property_read_u32(aad_np, "dlg,mic-det-thr", &fw_val32) >= 0)
623 aad_pdata->mic_det_thr =
624 da7219_aad_fw_mic_det_thr(codec, fw_val32);
625 else
626 aad_pdata->mic_det_thr = DA7219_AAD_MIC_DET_THR_500_OHMS;
627
628 if (fwnode_property_read_u32(aad_np, "dlg,jack-ins-deb", &fw_val32) >= 0)
629 aad_pdata->jack_ins_deb =
630 da7219_aad_fw_jack_ins_deb(codec, fw_val32);
631 else
632 aad_pdata->jack_ins_deb = DA7219_AAD_JACK_INS_DEB_20MS;
633
634 if (!fwnode_property_read_string(aad_np, "dlg,jack-det-rate", &fw_str))
635 aad_pdata->jack_det_rate =
636 da7219_aad_fw_jack_det_rate(codec, fw_str);
637 else
638 aad_pdata->jack_det_rate = DA7219_AAD_JACK_DET_RATE_256_512MS;
639
640 if (fwnode_property_read_u32(aad_np, "dlg,jack-rem-deb", &fw_val32) >= 0)
641 aad_pdata->jack_rem_deb =
642 da7219_aad_fw_jack_rem_deb(codec, fw_val32);
643 else
644 aad_pdata->jack_rem_deb = DA7219_AAD_JACK_REM_DEB_1MS;
645
646 if (fwnode_property_read_u32(aad_np, "dlg,a-d-btn-thr", &fw_val32) >= 0)
647 aad_pdata->a_d_btn_thr = (u8) fw_val32;
648 else
649 aad_pdata->a_d_btn_thr = 0xA;
650
651 if (fwnode_property_read_u32(aad_np, "dlg,d-b-btn-thr", &fw_val32) >= 0)
652 aad_pdata->d_b_btn_thr = (u8) fw_val32;
653 else
654 aad_pdata->d_b_btn_thr = 0x16;
655
656 if (fwnode_property_read_u32(aad_np, "dlg,b-c-btn-thr", &fw_val32) >= 0)
657 aad_pdata->b_c_btn_thr = (u8) fw_val32;
658 else
659 aad_pdata->b_c_btn_thr = 0x21;
660
661 if (fwnode_property_read_u32(aad_np, "dlg,c-mic-btn-thr", &fw_val32) >= 0)
662 aad_pdata->c_mic_btn_thr = (u8) fw_val32;
663 else
664 aad_pdata->c_mic_btn_thr = 0x3E;
665
666 if (fwnode_property_read_u32(aad_np, "dlg,btn-avg", &fw_val32) >= 0)
667 aad_pdata->btn_avg = da7219_aad_fw_btn_avg(codec, fw_val32);
668 else
669 aad_pdata->btn_avg = DA7219_AAD_BTN_AVG_2;
670
671 if (fwnode_property_read_u32(aad_np, "dlg,adc-1bit-rpt", &fw_val32) >= 0)
672 aad_pdata->adc_1bit_rpt =
673 da7219_aad_fw_adc_1bit_rpt(codec, fw_val32);
674 else
675 aad_pdata->adc_1bit_rpt = DA7219_AAD_ADC_1BIT_RPT_1;
676
677 return aad_pdata;
678 }
679
da7219_aad_handle_pdata(struct snd_soc_codec * codec)680 static void da7219_aad_handle_pdata(struct snd_soc_codec *codec)
681 {
682 struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
683 struct da7219_aad_priv *da7219_aad = da7219->aad;
684 struct da7219_pdata *pdata = da7219->pdata;
685
686 if ((pdata) && (pdata->aad_pdata)) {
687 struct da7219_aad_pdata *aad_pdata = pdata->aad_pdata;
688 u8 cfg, mask;
689
690 da7219_aad->irq = aad_pdata->irq;
691
692 switch (aad_pdata->micbias_pulse_lvl) {
693 case DA7219_AAD_MICBIAS_PULSE_LVL_2_8V:
694 case DA7219_AAD_MICBIAS_PULSE_LVL_2_9V:
695 da7219_aad->micbias_pulse_lvl =
696 (aad_pdata->micbias_pulse_lvl <<
697 DA7219_MICBIAS1_LEVEL_SHIFT);
698 break;
699 default:
700 break;
701 }
702
703 da7219_aad->micbias_pulse_time = aad_pdata->micbias_pulse_time;
704
705 switch (aad_pdata->btn_cfg) {
706 case DA7219_AAD_BTN_CFG_2MS:
707 case DA7219_AAD_BTN_CFG_5MS:
708 case DA7219_AAD_BTN_CFG_10MS:
709 case DA7219_AAD_BTN_CFG_50MS:
710 case DA7219_AAD_BTN_CFG_100MS:
711 case DA7219_AAD_BTN_CFG_200MS:
712 case DA7219_AAD_BTN_CFG_500MS:
713 da7219_aad->btn_cfg = (aad_pdata->btn_cfg <<
714 DA7219_BUTTON_CONFIG_SHIFT);
715 }
716
717 cfg = 0;
718 mask = 0;
719 switch (aad_pdata->mic_det_thr) {
720 case DA7219_AAD_MIC_DET_THR_200_OHMS:
721 case DA7219_AAD_MIC_DET_THR_500_OHMS:
722 case DA7219_AAD_MIC_DET_THR_750_OHMS:
723 case DA7219_AAD_MIC_DET_THR_1000_OHMS:
724 cfg |= (aad_pdata->mic_det_thr <<
725 DA7219_MIC_DET_THRESH_SHIFT);
726 mask |= DA7219_MIC_DET_THRESH_MASK;
727 }
728 snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1, mask, cfg);
729
730 cfg = 0;
731 mask = 0;
732 switch (aad_pdata->jack_ins_deb) {
733 case DA7219_AAD_JACK_INS_DEB_5MS:
734 case DA7219_AAD_JACK_INS_DEB_10MS:
735 case DA7219_AAD_JACK_INS_DEB_20MS:
736 case DA7219_AAD_JACK_INS_DEB_50MS:
737 case DA7219_AAD_JACK_INS_DEB_100MS:
738 case DA7219_AAD_JACK_INS_DEB_200MS:
739 case DA7219_AAD_JACK_INS_DEB_500MS:
740 case DA7219_AAD_JACK_INS_DEB_1S:
741 cfg |= (aad_pdata->jack_ins_deb <<
742 DA7219_JACKDET_DEBOUNCE_SHIFT);
743 mask |= DA7219_JACKDET_DEBOUNCE_MASK;
744 }
745 switch (aad_pdata->jack_det_rate) {
746 case DA7219_AAD_JACK_DET_RATE_32_64MS:
747 case DA7219_AAD_JACK_DET_RATE_64_128MS:
748 case DA7219_AAD_JACK_DET_RATE_128_256MS:
749 case DA7219_AAD_JACK_DET_RATE_256_512MS:
750 cfg |= (aad_pdata->jack_det_rate <<
751 DA7219_JACK_DETECT_RATE_SHIFT);
752 mask |= DA7219_JACK_DETECT_RATE_MASK;
753 }
754 switch (aad_pdata->jack_rem_deb) {
755 case DA7219_AAD_JACK_REM_DEB_1MS:
756 case DA7219_AAD_JACK_REM_DEB_5MS:
757 case DA7219_AAD_JACK_REM_DEB_10MS:
758 case DA7219_AAD_JACK_REM_DEB_20MS:
759 cfg |= (aad_pdata->jack_rem_deb <<
760 DA7219_JACKDET_REM_DEB_SHIFT);
761 mask |= DA7219_JACKDET_REM_DEB_MASK;
762 }
763 snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_2, mask, cfg);
764
765 snd_soc_write(codec, DA7219_ACCDET_CONFIG_3,
766 aad_pdata->a_d_btn_thr);
767 snd_soc_write(codec, DA7219_ACCDET_CONFIG_4,
768 aad_pdata->d_b_btn_thr);
769 snd_soc_write(codec, DA7219_ACCDET_CONFIG_5,
770 aad_pdata->b_c_btn_thr);
771 snd_soc_write(codec, DA7219_ACCDET_CONFIG_6,
772 aad_pdata->c_mic_btn_thr);
773
774 cfg = 0;
775 mask = 0;
776 switch (aad_pdata->btn_avg) {
777 case DA7219_AAD_BTN_AVG_1:
778 case DA7219_AAD_BTN_AVG_2:
779 case DA7219_AAD_BTN_AVG_4:
780 case DA7219_AAD_BTN_AVG_8:
781 cfg |= (aad_pdata->btn_avg <<
782 DA7219_BUTTON_AVERAGE_SHIFT);
783 mask |= DA7219_BUTTON_AVERAGE_MASK;
784 }
785 switch (aad_pdata->adc_1bit_rpt) {
786 case DA7219_AAD_ADC_1BIT_RPT_1:
787 case DA7219_AAD_ADC_1BIT_RPT_2:
788 case DA7219_AAD_ADC_1BIT_RPT_4:
789 case DA7219_AAD_ADC_1BIT_RPT_8:
790 cfg |= (aad_pdata->adc_1bit_rpt <<
791 DA7219_ADC_1_BIT_REPEAT_SHIFT);
792 mask |= DA7219_ADC_1_BIT_REPEAT_MASK;
793 }
794 snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_7, mask, cfg);
795 }
796 }
797
798
799 /*
800 * Suspend/Resume
801 */
802
da7219_aad_suspend(struct snd_soc_codec * codec)803 void da7219_aad_suspend(struct snd_soc_codec *codec)
804 {
805 struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
806 struct da7219_aad_priv *da7219_aad = da7219->aad;
807 struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
808 u8 micbias_ctrl;
809
810 if (da7219_aad->jack) {
811 /* Disable jack detection during suspend */
812 snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
813 DA7219_ACCDET_EN_MASK, 0);
814
815 /*
816 * If we have a 4-pole jack inserted, then micbias will be
817 * enabled. We can disable micbias here, and keep a note to
818 * re-enable it on resume. If jack removal occurred during
819 * suspend then this will be dealt with through the IRQ handler.
820 */
821 if (da7219_aad->jack_inserted) {
822 micbias_ctrl = snd_soc_read(codec, DA7219_MICBIAS_CTRL);
823 if (micbias_ctrl & DA7219_MICBIAS1_EN_MASK) {
824 snd_soc_dapm_disable_pin(dapm, "Mic Bias");
825 snd_soc_dapm_sync(dapm);
826 da7219_aad->micbias_resume_enable = true;
827 }
828 }
829 }
830 }
831
da7219_aad_resume(struct snd_soc_codec * codec)832 void da7219_aad_resume(struct snd_soc_codec *codec)
833 {
834 struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
835 struct da7219_aad_priv *da7219_aad = da7219->aad;
836 struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
837
838 if (da7219_aad->jack) {
839 /* Re-enable micbias if previously enabled for 4-pole jack */
840 if (da7219_aad->jack_inserted &&
841 da7219_aad->micbias_resume_enable) {
842 snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
843 snd_soc_dapm_sync(dapm);
844 da7219_aad->micbias_resume_enable = false;
845 }
846
847 /* Re-enable jack detection */
848 snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
849 DA7219_ACCDET_EN_MASK,
850 DA7219_ACCDET_EN_MASK);
851 }
852 }
853
854
855 /*
856 * Init/Exit
857 */
858
da7219_aad_init(struct snd_soc_codec * codec)859 int da7219_aad_init(struct snd_soc_codec *codec)
860 {
861 struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
862 struct da7219_aad_priv *da7219_aad;
863 u8 mask[DA7219_AAD_IRQ_REG_MAX];
864 int ret;
865
866 da7219_aad = devm_kzalloc(codec->dev, sizeof(*da7219_aad), GFP_KERNEL);
867 if (!da7219_aad)
868 return -ENOMEM;
869
870 da7219->aad = da7219_aad;
871 da7219_aad->codec = codec;
872
873 /* Handle any DT/ACPI/platform data */
874 if (da7219->pdata && !da7219->pdata->aad_pdata)
875 da7219->pdata->aad_pdata = da7219_aad_fw_to_pdata(codec);
876
877 da7219_aad_handle_pdata(codec);
878
879 /* Disable button detection */
880 snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
881 DA7219_BUTTON_CONFIG_MASK, 0);
882
883 INIT_WORK(&da7219_aad->btn_det_work, da7219_aad_btn_det_work);
884 INIT_WORK(&da7219_aad->hptest_work, da7219_aad_hptest_work);
885
886 ret = request_threaded_irq(da7219_aad->irq, NULL,
887 da7219_aad_irq_thread,
888 IRQF_TRIGGER_LOW | IRQF_ONESHOT,
889 "da7219-aad", da7219_aad);
890 if (ret) {
891 dev_err(codec->dev, "Failed to request IRQ: %d\n", ret);
892 return ret;
893 }
894
895 /* Unmask AAD IRQs */
896 memset(mask, 0, DA7219_AAD_IRQ_REG_MAX);
897 regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_MASK_A,
898 &mask, DA7219_AAD_IRQ_REG_MAX);
899
900 return 0;
901 }
902 EXPORT_SYMBOL_GPL(da7219_aad_init);
903
da7219_aad_exit(struct snd_soc_codec * codec)904 void da7219_aad_exit(struct snd_soc_codec *codec)
905 {
906 struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
907 struct da7219_aad_priv *da7219_aad = da7219->aad;
908 u8 mask[DA7219_AAD_IRQ_REG_MAX];
909
910 /* Mask off AAD IRQs */
911 memset(mask, DA7219_BYTE_MASK, DA7219_AAD_IRQ_REG_MAX);
912 regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_MASK_A,
913 mask, DA7219_AAD_IRQ_REG_MAX);
914
915 free_irq(da7219_aad->irq, da7219_aad);
916
917 cancel_work_sync(&da7219_aad->btn_det_work);
918 cancel_work_sync(&da7219_aad->hptest_work);
919 }
920 EXPORT_SYMBOL_GPL(da7219_aad_exit);
921
922 MODULE_DESCRIPTION("ASoC DA7219 AAD Driver");
923 MODULE_AUTHOR("Adam Thomson <Adam.Thomson.Opensource@diasemi.com>");
924 MODULE_LICENSE("GPL");
925