1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * da7219-aad.c - Dialog DA7219 ALSA SoC AAD Driver
4 *
5 * Copyright (c) 2015 Dialog Semiconductor Ltd.
6 *
7 * Author: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
8 */
9
10 #include <linux/module.h>
11 #include <linux/platform_device.h>
12 #include <linux/clk.h>
13 #include <linux/i2c.h>
14 #include <linux/property.h>
15 #include <linux/pm_wakeirq.h>
16 #include <linux/slab.h>
17 #include <linux/delay.h>
18 #include <linux/workqueue.h>
19 #include <sound/soc.h>
20 #include <sound/jack.h>
21 #include <sound/da7219.h>
22
23 #include "da7219.h"
24 #include "da7219-aad.h"
25
26
27 /*
28 * Detection control
29 */
30
da7219_aad_jack_det(struct snd_soc_component * component,struct snd_soc_jack * jack)31 void da7219_aad_jack_det(struct snd_soc_component *component, struct snd_soc_jack *jack)
32 {
33 struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
34
35 da7219->aad->jack = jack;
36 da7219->aad->jack_inserted = false;
37
38 /* Send an initial empty report */
39 snd_soc_jack_report(jack, 0, DA7219_AAD_REPORT_ALL_MASK);
40
41 /* Enable/Disable jack detection */
42 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
43 DA7219_ACCDET_EN_MASK,
44 (jack ? DA7219_ACCDET_EN_MASK : 0));
45 }
46 EXPORT_SYMBOL_GPL(da7219_aad_jack_det);
47
48 /*
49 * Button/HPTest work
50 */
51
da7219_aad_btn_det_work(struct work_struct * work)52 static void da7219_aad_btn_det_work(struct work_struct *work)
53 {
54 struct da7219_aad_priv *da7219_aad =
55 container_of(work, struct da7219_aad_priv, btn_det_work);
56 struct snd_soc_component *component = da7219_aad->component;
57 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
58 struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
59 u8 statusa, micbias_ctrl;
60 bool micbias_up = false;
61 int retries = 0;
62
63 /* Disable ground switch */
64 snd_soc_component_update_bits(component, 0xFB, 0x01, 0x00);
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_read(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 da7219->micbias_on_event = true;
90
91 /*
92 * Mic bias pulse required to enable mic, must be done before enabling
93 * button detection to prevent erroneous button readings.
94 */
95 if (da7219_aad->micbias_pulse_lvl && da7219_aad->micbias_pulse_time) {
96 /* Pulse higher level voltage */
97 micbias_ctrl = snd_soc_component_read(component, DA7219_MICBIAS_CTRL);
98 snd_soc_component_update_bits(component, DA7219_MICBIAS_CTRL,
99 DA7219_MICBIAS1_LEVEL_MASK,
100 da7219_aad->micbias_pulse_lvl);
101 msleep(da7219_aad->micbias_pulse_time);
102 snd_soc_component_write(component, DA7219_MICBIAS_CTRL, micbias_ctrl);
103
104 }
105
106 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
107 DA7219_BUTTON_CONFIG_MASK,
108 da7219_aad->btn_cfg);
109 }
110
da7219_aad_hptest_work(struct work_struct * work)111 static void da7219_aad_hptest_work(struct work_struct *work)
112 {
113 struct da7219_aad_priv *da7219_aad =
114 container_of(work, struct da7219_aad_priv, hptest_work);
115 struct snd_soc_component *component = da7219_aad->component;
116 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
117 struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
118
119 __le16 tonegen_freq_hptest;
120 u8 pll_srm_sts, pll_ctrl, gain_ramp_ctrl, accdet_cfg8;
121 int report = 0, ret;
122
123 /* Lock DAPM, Kcontrols affected by this test and the PLL */
124 snd_soc_dapm_mutex_lock(dapm);
125 mutex_lock(&da7219->ctrl_lock);
126 mutex_lock(&da7219->pll_lock);
127
128 /* Ensure MCLK is available for HP test procedure */
129 if (da7219->mclk) {
130 ret = clk_prepare_enable(da7219->mclk);
131 if (ret) {
132 dev_err(component->dev, "Failed to enable mclk - %d\n", ret);
133 mutex_unlock(&da7219->pll_lock);
134 mutex_unlock(&da7219->ctrl_lock);
135 snd_soc_dapm_mutex_unlock(dapm);
136 return;
137 }
138 }
139
140 /*
141 * If MCLK not present, then we're using the internal oscillator and
142 * require different frequency settings to achieve the same result.
143 *
144 * If MCLK is present, but PLL is not enabled then we enable it here to
145 * ensure a consistent detection procedure.
146 */
147 pll_srm_sts = snd_soc_component_read(component, DA7219_PLL_SRM_STS);
148 if (pll_srm_sts & DA7219_PLL_SRM_STS_MCLK) {
149 tonegen_freq_hptest = cpu_to_le16(DA7219_AAD_HPTEST_RAMP_FREQ);
150
151 pll_ctrl = snd_soc_component_read(component, DA7219_PLL_CTRL);
152 if ((pll_ctrl & DA7219_PLL_MODE_MASK) == DA7219_PLL_MODE_BYPASS)
153 da7219_set_pll(component, DA7219_SYSCLK_PLL,
154 DA7219_PLL_FREQ_OUT_98304);
155 } else {
156 tonegen_freq_hptest = cpu_to_le16(DA7219_AAD_HPTEST_RAMP_FREQ_INT_OSC);
157 }
158
159 /* Disable ground switch */
160 snd_soc_component_update_bits(component, 0xFB, 0x01, 0x00);
161
162 /* Ensure gain ramping at fastest rate */
163 gain_ramp_ctrl = snd_soc_component_read(component, DA7219_GAIN_RAMP_CTRL);
164 snd_soc_component_write(component, DA7219_GAIN_RAMP_CTRL, DA7219_GAIN_RAMP_RATE_X8);
165
166 /* Bypass cache so it saves current settings */
167 regcache_cache_bypass(da7219->regmap, true);
168
169 /* Make sure Tone Generator is disabled */
170 snd_soc_component_write(component, DA7219_TONE_GEN_CFG1, 0);
171
172 /* Enable HPTest block, 1KOhms check */
173 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_8,
174 DA7219_HPTEST_EN_MASK | DA7219_HPTEST_RES_SEL_MASK,
175 DA7219_HPTEST_EN_MASK |
176 DA7219_HPTEST_RES_SEL_1KOHMS);
177
178 /* Set gains to 0db */
179 snd_soc_component_write(component, DA7219_DAC_L_GAIN, DA7219_DAC_DIGITAL_GAIN_0DB);
180 snd_soc_component_write(component, DA7219_DAC_R_GAIN, DA7219_DAC_DIGITAL_GAIN_0DB);
181 snd_soc_component_write(component, DA7219_HP_L_GAIN, DA7219_HP_AMP_GAIN_0DB);
182 snd_soc_component_write(component, DA7219_HP_R_GAIN, DA7219_HP_AMP_GAIN_0DB);
183
184 /* Disable DAC filters, EQs and soft mute */
185 snd_soc_component_update_bits(component, DA7219_DAC_FILTERS1, DA7219_HPF_MODE_MASK,
186 0);
187 snd_soc_component_update_bits(component, DA7219_DAC_FILTERS4, DA7219_DAC_EQ_EN_MASK,
188 0);
189 snd_soc_component_update_bits(component, DA7219_DAC_FILTERS5,
190 DA7219_DAC_SOFTMUTE_EN_MASK, 0);
191
192 /* Enable HP left & right paths */
193 snd_soc_component_update_bits(component, DA7219_CP_CTRL, DA7219_CP_EN_MASK,
194 DA7219_CP_EN_MASK);
195 snd_soc_component_update_bits(component, DA7219_DIG_ROUTING_DAC,
196 DA7219_DAC_L_SRC_MASK | DA7219_DAC_R_SRC_MASK,
197 DA7219_DAC_L_SRC_TONEGEN |
198 DA7219_DAC_R_SRC_TONEGEN);
199 snd_soc_component_update_bits(component, DA7219_DAC_L_CTRL,
200 DA7219_DAC_L_EN_MASK | DA7219_DAC_L_MUTE_EN_MASK,
201 DA7219_DAC_L_EN_MASK);
202 snd_soc_component_update_bits(component, DA7219_DAC_R_CTRL,
203 DA7219_DAC_R_EN_MASK | DA7219_DAC_R_MUTE_EN_MASK,
204 DA7219_DAC_R_EN_MASK);
205 snd_soc_component_update_bits(component, DA7219_MIXOUT_L_SELECT,
206 DA7219_MIXOUT_L_MIX_SELECT_MASK,
207 DA7219_MIXOUT_L_MIX_SELECT_MASK);
208 snd_soc_component_update_bits(component, DA7219_MIXOUT_R_SELECT,
209 DA7219_MIXOUT_R_MIX_SELECT_MASK,
210 DA7219_MIXOUT_R_MIX_SELECT_MASK);
211 snd_soc_component_update_bits(component, DA7219_DROUTING_ST_OUTFILT_1L,
212 DA7219_OUTFILT_ST_1L_SRC_MASK,
213 DA7219_DMIX_ST_SRC_OUTFILT1L);
214 snd_soc_component_update_bits(component, DA7219_DROUTING_ST_OUTFILT_1R,
215 DA7219_OUTFILT_ST_1R_SRC_MASK,
216 DA7219_DMIX_ST_SRC_OUTFILT1R);
217 snd_soc_component_update_bits(component, DA7219_MIXOUT_L_CTRL,
218 DA7219_MIXOUT_L_AMP_EN_MASK,
219 DA7219_MIXOUT_L_AMP_EN_MASK);
220 snd_soc_component_update_bits(component, DA7219_MIXOUT_R_CTRL,
221 DA7219_MIXOUT_R_AMP_EN_MASK,
222 DA7219_MIXOUT_R_AMP_EN_MASK);
223 snd_soc_component_update_bits(component, DA7219_HP_L_CTRL,
224 DA7219_HP_L_AMP_OE_MASK | DA7219_HP_L_AMP_EN_MASK,
225 DA7219_HP_L_AMP_OE_MASK | DA7219_HP_L_AMP_EN_MASK);
226 snd_soc_component_update_bits(component, DA7219_HP_R_CTRL,
227 DA7219_HP_R_AMP_OE_MASK | DA7219_HP_R_AMP_EN_MASK,
228 DA7219_HP_R_AMP_OE_MASK | DA7219_HP_R_AMP_EN_MASK);
229 msleep(DA7219_SETTLING_DELAY);
230 snd_soc_component_update_bits(component, DA7219_HP_L_CTRL,
231 DA7219_HP_L_AMP_MUTE_EN_MASK |
232 DA7219_HP_L_AMP_MIN_GAIN_EN_MASK, 0);
233 snd_soc_component_update_bits(component, DA7219_HP_R_CTRL,
234 DA7219_HP_R_AMP_MUTE_EN_MASK |
235 DA7219_HP_R_AMP_MIN_GAIN_EN_MASK, 0);
236
237 /*
238 * If we're running from the internal oscillator then give audio paths
239 * time to settle before running test.
240 */
241 if (!(pll_srm_sts & DA7219_PLL_SRM_STS_MCLK))
242 msleep(DA7219_AAD_HPTEST_INT_OSC_PATH_DELAY);
243
244 /* Configure & start Tone Generator */
245 snd_soc_component_write(component, DA7219_TONE_GEN_ON_PER, DA7219_BEEP_ON_PER_MASK);
246 regmap_raw_write(da7219->regmap, DA7219_TONE_GEN_FREQ1_L,
247 &tonegen_freq_hptest, sizeof(tonegen_freq_hptest));
248 snd_soc_component_update_bits(component, DA7219_TONE_GEN_CFG2,
249 DA7219_SWG_SEL_MASK | DA7219_TONE_GEN_GAIN_MASK,
250 DA7219_SWG_SEL_SRAMP |
251 DA7219_TONE_GEN_GAIN_MINUS_15DB);
252 snd_soc_component_write(component, DA7219_TONE_GEN_CFG1, DA7219_START_STOPN_MASK);
253
254 msleep(DA7219_AAD_HPTEST_PERIOD);
255
256 /* Grab comparator reading */
257 accdet_cfg8 = snd_soc_component_read(component, DA7219_ACCDET_CONFIG_8);
258 if (accdet_cfg8 & DA7219_HPTEST_COMP_MASK)
259 report |= SND_JACK_HEADPHONE;
260 else
261 report |= SND_JACK_LINEOUT;
262
263 /* Stop tone generator */
264 snd_soc_component_write(component, DA7219_TONE_GEN_CFG1, 0);
265
266 msleep(DA7219_AAD_HPTEST_PERIOD);
267
268 /* Restore original settings from cache */
269 regcache_mark_dirty(da7219->regmap);
270 regcache_sync_region(da7219->regmap, DA7219_HP_L_CTRL,
271 DA7219_HP_R_CTRL);
272 msleep(DA7219_SETTLING_DELAY);
273 regcache_sync_region(da7219->regmap, DA7219_MIXOUT_L_CTRL,
274 DA7219_MIXOUT_R_CTRL);
275 regcache_sync_region(da7219->regmap, DA7219_DROUTING_ST_OUTFILT_1L,
276 DA7219_DROUTING_ST_OUTFILT_1R);
277 regcache_sync_region(da7219->regmap, DA7219_MIXOUT_L_SELECT,
278 DA7219_MIXOUT_R_SELECT);
279 regcache_sync_region(da7219->regmap, DA7219_DAC_L_CTRL,
280 DA7219_DAC_R_CTRL);
281 regcache_sync_region(da7219->regmap, DA7219_DIG_ROUTING_DAC,
282 DA7219_DIG_ROUTING_DAC);
283 regcache_sync_region(da7219->regmap, DA7219_CP_CTRL, DA7219_CP_CTRL);
284 regcache_sync_region(da7219->regmap, DA7219_DAC_FILTERS5,
285 DA7219_DAC_FILTERS5);
286 regcache_sync_region(da7219->regmap, DA7219_DAC_FILTERS4,
287 DA7219_DAC_FILTERS1);
288 regcache_sync_region(da7219->regmap, DA7219_HP_L_GAIN,
289 DA7219_HP_R_GAIN);
290 regcache_sync_region(da7219->regmap, DA7219_DAC_L_GAIN,
291 DA7219_DAC_R_GAIN);
292 regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_ON_PER,
293 DA7219_TONE_GEN_ON_PER);
294 regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_FREQ1_L,
295 DA7219_TONE_GEN_FREQ1_U);
296 regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_CFG1,
297 DA7219_TONE_GEN_CFG2);
298
299 regcache_cache_bypass(da7219->regmap, false);
300
301 /* Disable HPTest block */
302 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_8,
303 DA7219_HPTEST_EN_MASK, 0);
304
305 /*
306 * If we're running from the internal oscillator then give audio paths
307 * time to settle before allowing headphones to be driven as required.
308 */
309 if (!(pll_srm_sts & DA7219_PLL_SRM_STS_MCLK))
310 msleep(DA7219_AAD_HPTEST_INT_OSC_PATH_DELAY);
311
312 /* Restore gain ramping rate */
313 snd_soc_component_write(component, DA7219_GAIN_RAMP_CTRL, gain_ramp_ctrl);
314
315 /* Drive Headphones/lineout */
316 snd_soc_component_update_bits(component, DA7219_HP_L_CTRL, DA7219_HP_L_AMP_OE_MASK,
317 DA7219_HP_L_AMP_OE_MASK);
318 snd_soc_component_update_bits(component, DA7219_HP_R_CTRL, DA7219_HP_R_AMP_OE_MASK,
319 DA7219_HP_R_AMP_OE_MASK);
320
321 /* Restore PLL to previous configuration, if re-configured */
322 if ((pll_srm_sts & DA7219_PLL_SRM_STS_MCLK) &&
323 ((pll_ctrl & DA7219_PLL_MODE_MASK) == DA7219_PLL_MODE_BYPASS))
324 da7219_set_pll(component, DA7219_SYSCLK_MCLK, 0);
325
326 /* Remove MCLK, if previously enabled */
327 if (da7219->mclk)
328 clk_disable_unprepare(da7219->mclk);
329
330 mutex_unlock(&da7219->pll_lock);
331 mutex_unlock(&da7219->ctrl_lock);
332 snd_soc_dapm_mutex_unlock(dapm);
333
334 /*
335 * Only send report if jack hasn't been removed during process,
336 * otherwise it's invalid and we drop it.
337 */
338 if (da7219_aad->jack_inserted)
339 snd_soc_jack_report(da7219_aad->jack, report,
340 SND_JACK_HEADSET | SND_JACK_LINEOUT);
341 }
342
343
344 /*
345 * IRQ
346 */
347
da7219_aad_irq_thread(int irq,void * data)348 static irqreturn_t da7219_aad_irq_thread(int irq, void *data)
349 {
350 struct da7219_aad_priv *da7219_aad = data;
351 struct snd_soc_component *component = da7219_aad->component;
352 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
353 struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
354 u8 events[DA7219_AAD_IRQ_REG_MAX];
355 u8 statusa;
356 int i, report = 0, mask = 0;
357
358 /* Read current IRQ events */
359 regmap_bulk_read(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A,
360 events, DA7219_AAD_IRQ_REG_MAX);
361
362 if (!events[DA7219_AAD_IRQ_REG_A] && !events[DA7219_AAD_IRQ_REG_B])
363 return IRQ_NONE;
364
365 /* Read status register for jack insertion & type status */
366 statusa = snd_soc_component_read(component, DA7219_ACCDET_STATUS_A);
367
368 /* Clear events */
369 regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A,
370 events, DA7219_AAD_IRQ_REG_MAX);
371
372 dev_dbg(component->dev, "IRQ events = 0x%x|0x%x, status = 0x%x\n",
373 events[DA7219_AAD_IRQ_REG_A], events[DA7219_AAD_IRQ_REG_B],
374 statusa);
375
376 if (statusa & DA7219_JACK_INSERTION_STS_MASK) {
377 /* Jack Insertion */
378 if (events[DA7219_AAD_IRQ_REG_A] &
379 DA7219_E_JACK_INSERTED_MASK) {
380 report |= SND_JACK_MECHANICAL;
381 mask |= SND_JACK_MECHANICAL;
382 da7219_aad->jack_inserted = true;
383 }
384
385 /* Jack type detection */
386 if (events[DA7219_AAD_IRQ_REG_A] &
387 DA7219_E_JACK_DETECT_COMPLETE_MASK) {
388 /*
389 * If 4-pole, then enable button detection, else perform
390 * HP impedance test to determine output type to report.
391 *
392 * We schedule work here as the tasks themselves can
393 * take time to complete, and in particular for hptest
394 * we want to be able to check if the jack was removed
395 * during the procedure as this will invalidate the
396 * result. By doing this as work, the IRQ thread can
397 * handle a removal, and we can check at the end of
398 * hptest if we have a valid result or not.
399 */
400 if (statusa & DA7219_JACK_TYPE_STS_MASK) {
401 report |= SND_JACK_HEADSET;
402 mask |= SND_JACK_HEADSET | SND_JACK_LINEOUT;
403 schedule_work(&da7219_aad->btn_det_work);
404 } else {
405 schedule_work(&da7219_aad->hptest_work);
406 }
407 }
408
409 /* Button support for 4-pole jack */
410 if (statusa & DA7219_JACK_TYPE_STS_MASK) {
411 for (i = 0; i < DA7219_AAD_MAX_BUTTONS; ++i) {
412 /* Button Press */
413 if (events[DA7219_AAD_IRQ_REG_B] &
414 (DA7219_E_BUTTON_A_PRESSED_MASK << i)) {
415 report |= SND_JACK_BTN_0 >> i;
416 mask |= SND_JACK_BTN_0 >> i;
417 }
418 }
419 snd_soc_jack_report(da7219_aad->jack, report, mask);
420
421 for (i = 0; i < DA7219_AAD_MAX_BUTTONS; ++i) {
422 /* Button Release */
423 if (events[DA7219_AAD_IRQ_REG_B] &
424 (DA7219_E_BUTTON_A_RELEASED_MASK >> i)) {
425 report &= ~(SND_JACK_BTN_0 >> i);
426 mask |= SND_JACK_BTN_0 >> i;
427 }
428 }
429 }
430 } else {
431 /* Jack removal */
432 if (events[DA7219_AAD_IRQ_REG_A] & DA7219_E_JACK_REMOVED_MASK) {
433 report = 0;
434 mask |= DA7219_AAD_REPORT_ALL_MASK;
435 da7219_aad->jack_inserted = false;
436
437 /* Cancel any pending work */
438 cancel_work_sync(&da7219_aad->btn_det_work);
439 cancel_work_sync(&da7219_aad->hptest_work);
440
441 /* Un-drive headphones/lineout */
442 snd_soc_component_update_bits(component, DA7219_HP_R_CTRL,
443 DA7219_HP_R_AMP_OE_MASK, 0);
444 snd_soc_component_update_bits(component, DA7219_HP_L_CTRL,
445 DA7219_HP_L_AMP_OE_MASK, 0);
446
447 /* Ensure button detection disabled */
448 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
449 DA7219_BUTTON_CONFIG_MASK, 0);
450
451 da7219->micbias_on_event = false;
452
453 /* Disable mic bias */
454 snd_soc_dapm_disable_pin(dapm, "Mic Bias");
455 snd_soc_dapm_sync(dapm);
456
457 /* Enable ground switch */
458 snd_soc_component_update_bits(component, 0xFB, 0x01, 0x01);
459 }
460 }
461
462 snd_soc_jack_report(da7219_aad->jack, report, mask);
463
464 return IRQ_HANDLED;
465 }
466
467 /*
468 * DT/ACPI to pdata conversion
469 */
470
471 static enum da7219_aad_micbias_pulse_lvl
da7219_aad_fw_micbias_pulse_lvl(struct device * dev,u32 val)472 da7219_aad_fw_micbias_pulse_lvl(struct device *dev, u32 val)
473 {
474 switch (val) {
475 case 2800:
476 return DA7219_AAD_MICBIAS_PULSE_LVL_2_8V;
477 case 2900:
478 return DA7219_AAD_MICBIAS_PULSE_LVL_2_9V;
479 default:
480 dev_warn(dev, "Invalid micbias pulse level");
481 return DA7219_AAD_MICBIAS_PULSE_LVL_OFF;
482 }
483 }
484
485 static enum da7219_aad_btn_cfg
da7219_aad_fw_btn_cfg(struct device * dev,u32 val)486 da7219_aad_fw_btn_cfg(struct device *dev, u32 val)
487 {
488 switch (val) {
489 case 2:
490 return DA7219_AAD_BTN_CFG_2MS;
491 case 5:
492 return DA7219_AAD_BTN_CFG_5MS;
493 case 10:
494 return DA7219_AAD_BTN_CFG_10MS;
495 case 50:
496 return DA7219_AAD_BTN_CFG_50MS;
497 case 100:
498 return DA7219_AAD_BTN_CFG_100MS;
499 case 200:
500 return DA7219_AAD_BTN_CFG_200MS;
501 case 500:
502 return DA7219_AAD_BTN_CFG_500MS;
503 default:
504 dev_warn(dev, "Invalid button config");
505 return DA7219_AAD_BTN_CFG_10MS;
506 }
507 }
508
509 static enum da7219_aad_mic_det_thr
da7219_aad_fw_mic_det_thr(struct device * dev,u32 val)510 da7219_aad_fw_mic_det_thr(struct device *dev, u32 val)
511 {
512 switch (val) {
513 case 200:
514 return DA7219_AAD_MIC_DET_THR_200_OHMS;
515 case 500:
516 return DA7219_AAD_MIC_DET_THR_500_OHMS;
517 case 750:
518 return DA7219_AAD_MIC_DET_THR_750_OHMS;
519 case 1000:
520 return DA7219_AAD_MIC_DET_THR_1000_OHMS;
521 default:
522 dev_warn(dev, "Invalid mic detect threshold");
523 return DA7219_AAD_MIC_DET_THR_500_OHMS;
524 }
525 }
526
527 static enum da7219_aad_jack_ins_deb
da7219_aad_fw_jack_ins_deb(struct device * dev,u32 val)528 da7219_aad_fw_jack_ins_deb(struct device *dev, u32 val)
529 {
530 switch (val) {
531 case 5:
532 return DA7219_AAD_JACK_INS_DEB_5MS;
533 case 10:
534 return DA7219_AAD_JACK_INS_DEB_10MS;
535 case 20:
536 return DA7219_AAD_JACK_INS_DEB_20MS;
537 case 50:
538 return DA7219_AAD_JACK_INS_DEB_50MS;
539 case 100:
540 return DA7219_AAD_JACK_INS_DEB_100MS;
541 case 200:
542 return DA7219_AAD_JACK_INS_DEB_200MS;
543 case 500:
544 return DA7219_AAD_JACK_INS_DEB_500MS;
545 case 1000:
546 return DA7219_AAD_JACK_INS_DEB_1S;
547 default:
548 dev_warn(dev, "Invalid jack insert debounce");
549 return DA7219_AAD_JACK_INS_DEB_20MS;
550 }
551 }
552
553 static enum da7219_aad_jack_det_rate
da7219_aad_fw_jack_det_rate(struct device * dev,const char * str)554 da7219_aad_fw_jack_det_rate(struct device *dev, const char *str)
555 {
556 if (!strcmp(str, "32ms_64ms")) {
557 return DA7219_AAD_JACK_DET_RATE_32_64MS;
558 } else if (!strcmp(str, "64ms_128ms")) {
559 return DA7219_AAD_JACK_DET_RATE_64_128MS;
560 } else if (!strcmp(str, "128ms_256ms")) {
561 return DA7219_AAD_JACK_DET_RATE_128_256MS;
562 } else if (!strcmp(str, "256ms_512ms")) {
563 return DA7219_AAD_JACK_DET_RATE_256_512MS;
564 } else {
565 dev_warn(dev, "Invalid jack detect rate");
566 return DA7219_AAD_JACK_DET_RATE_256_512MS;
567 }
568 }
569
570 static enum da7219_aad_jack_rem_deb
da7219_aad_fw_jack_rem_deb(struct device * dev,u32 val)571 da7219_aad_fw_jack_rem_deb(struct device *dev, u32 val)
572 {
573 switch (val) {
574 case 1:
575 return DA7219_AAD_JACK_REM_DEB_1MS;
576 case 5:
577 return DA7219_AAD_JACK_REM_DEB_5MS;
578 case 10:
579 return DA7219_AAD_JACK_REM_DEB_10MS;
580 case 20:
581 return DA7219_AAD_JACK_REM_DEB_20MS;
582 default:
583 dev_warn(dev, "Invalid jack removal debounce");
584 return DA7219_AAD_JACK_REM_DEB_1MS;
585 }
586 }
587
588 static enum da7219_aad_btn_avg
da7219_aad_fw_btn_avg(struct device * dev,u32 val)589 da7219_aad_fw_btn_avg(struct device *dev, u32 val)
590 {
591 switch (val) {
592 case 1:
593 return DA7219_AAD_BTN_AVG_1;
594 case 2:
595 return DA7219_AAD_BTN_AVG_2;
596 case 4:
597 return DA7219_AAD_BTN_AVG_4;
598 case 8:
599 return DA7219_AAD_BTN_AVG_8;
600 default:
601 dev_warn(dev, "Invalid button average value");
602 return DA7219_AAD_BTN_AVG_2;
603 }
604 }
605
606 static enum da7219_aad_adc_1bit_rpt
da7219_aad_fw_adc_1bit_rpt(struct device * dev,u32 val)607 da7219_aad_fw_adc_1bit_rpt(struct device *dev, u32 val)
608 {
609 switch (val) {
610 case 1:
611 return DA7219_AAD_ADC_1BIT_RPT_1;
612 case 2:
613 return DA7219_AAD_ADC_1BIT_RPT_2;
614 case 4:
615 return DA7219_AAD_ADC_1BIT_RPT_4;
616 case 8:
617 return DA7219_AAD_ADC_1BIT_RPT_8;
618 default:
619 dev_warn(dev, "Invalid ADC 1-bit repeat value");
620 return DA7219_AAD_ADC_1BIT_RPT_1;
621 }
622 }
623
da7219_aad_fw_to_pdata(struct device * dev)624 static struct da7219_aad_pdata *da7219_aad_fw_to_pdata(struct device *dev)
625 {
626 struct i2c_client *i2c = to_i2c_client(dev);
627 struct fwnode_handle *aad_np;
628 struct da7219_aad_pdata *aad_pdata;
629 const char *fw_str;
630 u32 fw_val32;
631
632 aad_np = device_get_named_child_node(dev, "da7219_aad");
633 if (!aad_np)
634 return NULL;
635
636 aad_pdata = devm_kzalloc(dev, sizeof(*aad_pdata), GFP_KERNEL);
637 if (!aad_pdata)
638 return NULL;
639
640 aad_pdata->irq = i2c->irq;
641
642 if (fwnode_property_read_u32(aad_np, "dlg,micbias-pulse-lvl",
643 &fw_val32) >= 0)
644 aad_pdata->micbias_pulse_lvl =
645 da7219_aad_fw_micbias_pulse_lvl(dev, fw_val32);
646 else
647 aad_pdata->micbias_pulse_lvl = DA7219_AAD_MICBIAS_PULSE_LVL_OFF;
648
649 if (fwnode_property_read_u32(aad_np, "dlg,micbias-pulse-time",
650 &fw_val32) >= 0)
651 aad_pdata->micbias_pulse_time = fw_val32;
652
653 if (fwnode_property_read_u32(aad_np, "dlg,btn-cfg", &fw_val32) >= 0)
654 aad_pdata->btn_cfg = da7219_aad_fw_btn_cfg(dev, fw_val32);
655 else
656 aad_pdata->btn_cfg = DA7219_AAD_BTN_CFG_10MS;
657
658 if (fwnode_property_read_u32(aad_np, "dlg,mic-det-thr", &fw_val32) >= 0)
659 aad_pdata->mic_det_thr =
660 da7219_aad_fw_mic_det_thr(dev, fw_val32);
661 else
662 aad_pdata->mic_det_thr = DA7219_AAD_MIC_DET_THR_500_OHMS;
663
664 if (fwnode_property_read_u32(aad_np, "dlg,jack-ins-deb", &fw_val32) >= 0)
665 aad_pdata->jack_ins_deb =
666 da7219_aad_fw_jack_ins_deb(dev, fw_val32);
667 else
668 aad_pdata->jack_ins_deb = DA7219_AAD_JACK_INS_DEB_20MS;
669
670 if (!fwnode_property_read_string(aad_np, "dlg,jack-det-rate", &fw_str))
671 aad_pdata->jack_det_rate =
672 da7219_aad_fw_jack_det_rate(dev, fw_str);
673 else
674 aad_pdata->jack_det_rate = DA7219_AAD_JACK_DET_RATE_256_512MS;
675
676 if (fwnode_property_read_u32(aad_np, "dlg,jack-rem-deb", &fw_val32) >= 0)
677 aad_pdata->jack_rem_deb =
678 da7219_aad_fw_jack_rem_deb(dev, fw_val32);
679 else
680 aad_pdata->jack_rem_deb = DA7219_AAD_JACK_REM_DEB_1MS;
681
682 if (fwnode_property_read_u32(aad_np, "dlg,a-d-btn-thr", &fw_val32) >= 0)
683 aad_pdata->a_d_btn_thr = (u8) fw_val32;
684 else
685 aad_pdata->a_d_btn_thr = 0xA;
686
687 if (fwnode_property_read_u32(aad_np, "dlg,d-b-btn-thr", &fw_val32) >= 0)
688 aad_pdata->d_b_btn_thr = (u8) fw_val32;
689 else
690 aad_pdata->d_b_btn_thr = 0x16;
691
692 if (fwnode_property_read_u32(aad_np, "dlg,b-c-btn-thr", &fw_val32) >= 0)
693 aad_pdata->b_c_btn_thr = (u8) fw_val32;
694 else
695 aad_pdata->b_c_btn_thr = 0x21;
696
697 if (fwnode_property_read_u32(aad_np, "dlg,c-mic-btn-thr", &fw_val32) >= 0)
698 aad_pdata->c_mic_btn_thr = (u8) fw_val32;
699 else
700 aad_pdata->c_mic_btn_thr = 0x3E;
701
702 if (fwnode_property_read_u32(aad_np, "dlg,btn-avg", &fw_val32) >= 0)
703 aad_pdata->btn_avg = da7219_aad_fw_btn_avg(dev, fw_val32);
704 else
705 aad_pdata->btn_avg = DA7219_AAD_BTN_AVG_2;
706
707 if (fwnode_property_read_u32(aad_np, "dlg,adc-1bit-rpt", &fw_val32) >= 0)
708 aad_pdata->adc_1bit_rpt =
709 da7219_aad_fw_adc_1bit_rpt(dev, fw_val32);
710 else
711 aad_pdata->adc_1bit_rpt = DA7219_AAD_ADC_1BIT_RPT_1;
712
713 return aad_pdata;
714 }
715
da7219_aad_handle_pdata(struct snd_soc_component * component)716 static void da7219_aad_handle_pdata(struct snd_soc_component *component)
717 {
718 struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
719 struct da7219_aad_priv *da7219_aad = da7219->aad;
720 struct da7219_pdata *pdata = da7219->pdata;
721
722 if ((pdata) && (pdata->aad_pdata)) {
723 struct da7219_aad_pdata *aad_pdata = pdata->aad_pdata;
724 u8 cfg, mask;
725
726 da7219_aad->irq = aad_pdata->irq;
727
728 switch (aad_pdata->micbias_pulse_lvl) {
729 case DA7219_AAD_MICBIAS_PULSE_LVL_2_8V:
730 case DA7219_AAD_MICBIAS_PULSE_LVL_2_9V:
731 da7219_aad->micbias_pulse_lvl =
732 (aad_pdata->micbias_pulse_lvl <<
733 DA7219_MICBIAS1_LEVEL_SHIFT);
734 break;
735 default:
736 break;
737 }
738
739 da7219_aad->micbias_pulse_time = aad_pdata->micbias_pulse_time;
740
741 switch (aad_pdata->btn_cfg) {
742 case DA7219_AAD_BTN_CFG_2MS:
743 case DA7219_AAD_BTN_CFG_5MS:
744 case DA7219_AAD_BTN_CFG_10MS:
745 case DA7219_AAD_BTN_CFG_50MS:
746 case DA7219_AAD_BTN_CFG_100MS:
747 case DA7219_AAD_BTN_CFG_200MS:
748 case DA7219_AAD_BTN_CFG_500MS:
749 da7219_aad->btn_cfg = (aad_pdata->btn_cfg <<
750 DA7219_BUTTON_CONFIG_SHIFT);
751 }
752
753 cfg = 0;
754 mask = 0;
755 switch (aad_pdata->mic_det_thr) {
756 case DA7219_AAD_MIC_DET_THR_200_OHMS:
757 case DA7219_AAD_MIC_DET_THR_500_OHMS:
758 case DA7219_AAD_MIC_DET_THR_750_OHMS:
759 case DA7219_AAD_MIC_DET_THR_1000_OHMS:
760 cfg |= (aad_pdata->mic_det_thr <<
761 DA7219_MIC_DET_THRESH_SHIFT);
762 mask |= DA7219_MIC_DET_THRESH_MASK;
763 }
764 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1, mask, cfg);
765
766 cfg = 0;
767 mask = 0;
768 switch (aad_pdata->jack_ins_deb) {
769 case DA7219_AAD_JACK_INS_DEB_5MS:
770 case DA7219_AAD_JACK_INS_DEB_10MS:
771 case DA7219_AAD_JACK_INS_DEB_20MS:
772 case DA7219_AAD_JACK_INS_DEB_50MS:
773 case DA7219_AAD_JACK_INS_DEB_100MS:
774 case DA7219_AAD_JACK_INS_DEB_200MS:
775 case DA7219_AAD_JACK_INS_DEB_500MS:
776 case DA7219_AAD_JACK_INS_DEB_1S:
777 cfg |= (aad_pdata->jack_ins_deb <<
778 DA7219_JACKDET_DEBOUNCE_SHIFT);
779 mask |= DA7219_JACKDET_DEBOUNCE_MASK;
780 }
781 switch (aad_pdata->jack_det_rate) {
782 case DA7219_AAD_JACK_DET_RATE_32_64MS:
783 case DA7219_AAD_JACK_DET_RATE_64_128MS:
784 case DA7219_AAD_JACK_DET_RATE_128_256MS:
785 case DA7219_AAD_JACK_DET_RATE_256_512MS:
786 cfg |= (aad_pdata->jack_det_rate <<
787 DA7219_JACK_DETECT_RATE_SHIFT);
788 mask |= DA7219_JACK_DETECT_RATE_MASK;
789 }
790 switch (aad_pdata->jack_rem_deb) {
791 case DA7219_AAD_JACK_REM_DEB_1MS:
792 case DA7219_AAD_JACK_REM_DEB_5MS:
793 case DA7219_AAD_JACK_REM_DEB_10MS:
794 case DA7219_AAD_JACK_REM_DEB_20MS:
795 cfg |= (aad_pdata->jack_rem_deb <<
796 DA7219_JACKDET_REM_DEB_SHIFT);
797 mask |= DA7219_JACKDET_REM_DEB_MASK;
798 }
799 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_2, mask, cfg);
800
801 snd_soc_component_write(component, DA7219_ACCDET_CONFIG_3,
802 aad_pdata->a_d_btn_thr);
803 snd_soc_component_write(component, DA7219_ACCDET_CONFIG_4,
804 aad_pdata->d_b_btn_thr);
805 snd_soc_component_write(component, DA7219_ACCDET_CONFIG_5,
806 aad_pdata->b_c_btn_thr);
807 snd_soc_component_write(component, DA7219_ACCDET_CONFIG_6,
808 aad_pdata->c_mic_btn_thr);
809
810 cfg = 0;
811 mask = 0;
812 switch (aad_pdata->btn_avg) {
813 case DA7219_AAD_BTN_AVG_1:
814 case DA7219_AAD_BTN_AVG_2:
815 case DA7219_AAD_BTN_AVG_4:
816 case DA7219_AAD_BTN_AVG_8:
817 cfg |= (aad_pdata->btn_avg <<
818 DA7219_BUTTON_AVERAGE_SHIFT);
819 mask |= DA7219_BUTTON_AVERAGE_MASK;
820 }
821 switch (aad_pdata->adc_1bit_rpt) {
822 case DA7219_AAD_ADC_1BIT_RPT_1:
823 case DA7219_AAD_ADC_1BIT_RPT_2:
824 case DA7219_AAD_ADC_1BIT_RPT_4:
825 case DA7219_AAD_ADC_1BIT_RPT_8:
826 cfg |= (aad_pdata->adc_1bit_rpt <<
827 DA7219_ADC_1_BIT_REPEAT_SHIFT);
828 mask |= DA7219_ADC_1_BIT_REPEAT_MASK;
829 }
830 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_7, mask, cfg);
831 }
832 }
833
834
835 /*
836 * Suspend/Resume
837 */
838
da7219_aad_suspend(struct snd_soc_component * component)839 void da7219_aad_suspend(struct snd_soc_component *component)
840 {
841 struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
842 struct da7219_aad_priv *da7219_aad = da7219->aad;
843 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
844 u8 micbias_ctrl;
845
846 if (da7219_aad->jack) {
847 /* Disable jack detection during suspend */
848 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
849 DA7219_ACCDET_EN_MASK, 0);
850
851 /*
852 * If we have a 4-pole jack inserted, then micbias will be
853 * enabled. We can disable micbias here, and keep a note to
854 * re-enable it on resume. If jack removal occurred during
855 * suspend then this will be dealt with through the IRQ handler.
856 */
857 if (da7219_aad->jack_inserted) {
858 micbias_ctrl = snd_soc_component_read(component, DA7219_MICBIAS_CTRL);
859 if (micbias_ctrl & DA7219_MICBIAS1_EN_MASK) {
860 snd_soc_dapm_disable_pin(dapm, "Mic Bias");
861 snd_soc_dapm_sync(dapm);
862 da7219_aad->micbias_resume_enable = true;
863 }
864 }
865 }
866 }
867
da7219_aad_resume(struct snd_soc_component * component)868 void da7219_aad_resume(struct snd_soc_component *component)
869 {
870 struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
871 struct da7219_aad_priv *da7219_aad = da7219->aad;
872 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
873
874 if (da7219_aad->jack) {
875 /* Re-enable micbias if previously enabled for 4-pole jack */
876 if (da7219_aad->jack_inserted &&
877 da7219_aad->micbias_resume_enable) {
878 snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
879 snd_soc_dapm_sync(dapm);
880 da7219_aad->micbias_resume_enable = false;
881 }
882
883 /* Re-enable jack detection */
884 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
885 DA7219_ACCDET_EN_MASK,
886 DA7219_ACCDET_EN_MASK);
887 }
888 }
889
890
891 /*
892 * Init/Exit
893 */
894
da7219_aad_init(struct snd_soc_component * component)895 int da7219_aad_init(struct snd_soc_component *component)
896 {
897 struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
898 struct da7219_aad_priv *da7219_aad = da7219->aad;
899 u8 mask[DA7219_AAD_IRQ_REG_MAX];
900 int ret;
901
902 da7219_aad->component = component;
903
904 /* Handle any DT/ACPI/platform data */
905 da7219_aad_handle_pdata(component);
906
907 /* Disable button detection */
908 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
909 DA7219_BUTTON_CONFIG_MASK, 0);
910
911 /* Enable ground switch */
912 snd_soc_component_update_bits(component, 0xFB, 0x01, 0x01);
913
914 INIT_WORK(&da7219_aad->btn_det_work, da7219_aad_btn_det_work);
915 INIT_WORK(&da7219_aad->hptest_work, da7219_aad_hptest_work);
916
917 ret = request_threaded_irq(da7219_aad->irq, NULL,
918 da7219_aad_irq_thread,
919 IRQF_TRIGGER_LOW | IRQF_ONESHOT,
920 "da7219-aad", da7219_aad);
921 if (ret) {
922 dev_err(component->dev, "Failed to request IRQ: %d\n", ret);
923 return ret;
924 }
925
926 /* Unmask AAD IRQs */
927 memset(mask, 0, DA7219_AAD_IRQ_REG_MAX);
928 regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_MASK_A,
929 &mask, DA7219_AAD_IRQ_REG_MAX);
930
931 return 0;
932 }
933 EXPORT_SYMBOL_GPL(da7219_aad_init);
934
da7219_aad_exit(struct snd_soc_component * component)935 void da7219_aad_exit(struct snd_soc_component *component)
936 {
937 struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
938 struct da7219_aad_priv *da7219_aad = da7219->aad;
939 u8 mask[DA7219_AAD_IRQ_REG_MAX];
940
941 /* Mask off AAD IRQs */
942 memset(mask, DA7219_BYTE_MASK, DA7219_AAD_IRQ_REG_MAX);
943 regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_MASK_A,
944 mask, DA7219_AAD_IRQ_REG_MAX);
945
946 free_irq(da7219_aad->irq, da7219_aad);
947
948 cancel_work_sync(&da7219_aad->btn_det_work);
949 cancel_work_sync(&da7219_aad->hptest_work);
950 }
951 EXPORT_SYMBOL_GPL(da7219_aad_exit);
952
953 /*
954 * AAD related I2C probe handling
955 */
956
da7219_aad_probe(struct i2c_client * i2c)957 int da7219_aad_probe(struct i2c_client *i2c)
958 {
959 struct da7219_priv *da7219 = i2c_get_clientdata(i2c);
960 struct device *dev = &i2c->dev;
961 struct da7219_aad_priv *da7219_aad;
962
963 da7219_aad = devm_kzalloc(dev, sizeof(*da7219_aad), GFP_KERNEL);
964 if (!da7219_aad)
965 return -ENOMEM;
966
967 da7219->aad = da7219_aad;
968
969 /* Retrieve any DT/ACPI/platform data */
970 if (da7219->pdata && !da7219->pdata->aad_pdata)
971 da7219->pdata->aad_pdata = da7219_aad_fw_to_pdata(dev);
972
973 return 0;
974 }
975 EXPORT_SYMBOL_GPL(da7219_aad_probe);
976
977 MODULE_DESCRIPTION("ASoC DA7219 AAD Driver");
978 MODULE_AUTHOR("Adam Thomson <Adam.Thomson.Opensource@diasemi.com>");
979 MODULE_LICENSE("GPL");
980
