1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | // Copyright (c) 2015-2021, The Linux Foundation. All rights reserved. |
3 | |
4 | #include <linux/module.h> |
5 | #include <linux/init.h> |
6 | #include <linux/slab.h> |
7 | #include <linux/device.h> |
8 | #include <linux/pm_runtime.h> |
9 | #include <linux/printk.h> |
10 | #include <linux/delay.h> |
11 | #include <linux/kernel.h> |
12 | #include <sound/soc.h> |
13 | #include <sound/jack.h> |
14 | #include "wcd-mbhc-v2.h" |
15 | |
16 | #define HS_DETECT_PLUG_TIME_MS (3 * 1000) |
17 | #define MBHC_BUTTON_PRESS_THRESHOLD_MIN 250 |
18 | #define GND_MIC_SWAP_THRESHOLD 4 |
19 | #define GND_MIC_USBC_SWAP_THRESHOLD 2 |
20 | #define WCD_FAKE_REMOVAL_MIN_PERIOD_MS 100 |
21 | #define HPHL_CROSS_CONN_THRESHOLD 100 |
22 | #define HS_VREF_MIN_VAL 1400 |
23 | #define FAKE_REM_RETRY_ATTEMPTS 3 |
24 | #define WCD_MBHC_ADC_HS_THRESHOLD_MV 1700 |
25 | #define WCD_MBHC_ADC_HPH_THRESHOLD_MV 75 |
26 | #define WCD_MBHC_ADC_MICBIAS_MV 1800 |
27 | #define WCD_MBHC_FAKE_INS_RETRY 4 |
28 | |
29 | #define WCD_MBHC_JACK_MASK (SND_JACK_HEADSET | SND_JACK_LINEOUT | \ |
30 | SND_JACK_MECHANICAL) |
31 | |
32 | #define WCD_MBHC_JACK_BUTTON_MASK (SND_JACK_BTN_0 | SND_JACK_BTN_1 | \ |
33 | SND_JACK_BTN_2 | SND_JACK_BTN_3 | \ |
34 | SND_JACK_BTN_4 | SND_JACK_BTN_5) |
35 | |
36 | enum wcd_mbhc_adc_mux_ctl { |
37 | MUX_CTL_AUTO = 0, |
38 | MUX_CTL_IN2P, |
39 | MUX_CTL_IN3P, |
40 | MUX_CTL_IN4P, |
41 | MUX_CTL_HPH_L, |
42 | MUX_CTL_HPH_R, |
43 | MUX_CTL_NONE, |
44 | }; |
45 | |
46 | struct wcd_mbhc { |
47 | struct device *dev; |
48 | struct snd_soc_component *component; |
49 | struct snd_soc_jack *jack; |
50 | struct wcd_mbhc_config *cfg; |
51 | const struct wcd_mbhc_cb *mbhc_cb; |
52 | const struct wcd_mbhc_intr *intr_ids; |
53 | struct wcd_mbhc_field *fields; |
54 | /* Delayed work to report long button press */ |
55 | struct delayed_work mbhc_btn_dwork; |
56 | /* Work to handle plug report */ |
57 | struct work_struct mbhc_plug_detect_work; |
58 | /* Work to correct accessory type */ |
59 | struct work_struct correct_plug_swch; |
60 | struct mutex lock; |
61 | int buttons_pressed; |
62 | u32 hph_status; /* track headhpone status */ |
63 | u8 current_plug; |
64 | unsigned int swap_thr; |
65 | bool is_btn_press; |
66 | bool in_swch_irq_handler; |
67 | bool hs_detect_work_stop; |
68 | bool is_hs_recording; |
69 | bool extn_cable_hph_rem; |
70 | bool force_linein; |
71 | bool impedance_detect; |
72 | unsigned long event_state; |
73 | unsigned long jiffies_atreport; |
74 | /* impedance of hphl and hphr */ |
75 | uint32_t zl, zr; |
76 | /* Holds type of Headset - Mono/Stereo */ |
77 | enum wcd_mbhc_hph_type hph_type; |
78 | /* Holds mbhc detection method - ADC/Legacy */ |
79 | int mbhc_detection_logic; |
80 | }; |
81 | |
82 | static inline int wcd_mbhc_write_field(const struct wcd_mbhc *mbhc, |
83 | int field, int val) |
84 | { |
85 | if (!mbhc->fields[field].reg) |
86 | return 0; |
87 | |
88 | return snd_soc_component_write_field(component: mbhc->component, |
89 | reg: mbhc->fields[field].reg, |
90 | mask: mbhc->fields[field].mask, val); |
91 | } |
92 | |
93 | static inline int wcd_mbhc_read_field(const struct wcd_mbhc *mbhc, int field) |
94 | { |
95 | if (!mbhc->fields[field].reg) |
96 | return 0; |
97 | |
98 | return snd_soc_component_read_field(component: mbhc->component, |
99 | reg: mbhc->fields[field].reg, |
100 | mask: mbhc->fields[field].mask); |
101 | } |
102 | |
103 | static void wcd_program_hs_vref(struct wcd_mbhc *mbhc) |
104 | { |
105 | u32 reg_val = ((mbhc->cfg->v_hs_max - HS_VREF_MIN_VAL) / 100); |
106 | |
107 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_HS_VREF, val: reg_val); |
108 | } |
109 | |
110 | static void wcd_program_btn_threshold(const struct wcd_mbhc *mbhc, bool micbias) |
111 | { |
112 | struct snd_soc_component *component = mbhc->component; |
113 | |
114 | mbhc->mbhc_cb->set_btn_thr(component, mbhc->cfg->btn_low, |
115 | mbhc->cfg->btn_high, |
116 | mbhc->cfg->num_btn, micbias); |
117 | } |
118 | |
119 | static void wcd_mbhc_curr_micbias_control(const struct wcd_mbhc *mbhc, |
120 | const enum wcd_mbhc_cs_mb_en_flag cs_mb_en) |
121 | { |
122 | |
123 | /* |
124 | * Some codecs handle micbias/pullup enablement in codec |
125 | * drivers itself and micbias is not needed for regular |
126 | * plug type detection. So if micbias_control callback function |
127 | * is defined, just return. |
128 | */ |
129 | if (mbhc->mbhc_cb->mbhc_micbias_control) |
130 | return; |
131 | |
132 | switch (cs_mb_en) { |
133 | case WCD_MBHC_EN_CS: |
134 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_MICB_CTRL, val: 0); |
135 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_BTN_ISRC_CTL, val: 3); |
136 | /* Program Button threshold registers as per CS */ |
137 | wcd_program_btn_threshold(mbhc, micbias: false); |
138 | break; |
139 | case WCD_MBHC_EN_MB: |
140 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_BTN_ISRC_CTL, val: 0); |
141 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_FSM_EN, val: 1); |
142 | /* Disable PULL_UP_EN & enable MICBIAS */ |
143 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_MICB_CTRL, val: 2); |
144 | /* Program Button threshold registers as per MICBIAS */ |
145 | wcd_program_btn_threshold(mbhc, micbias: true); |
146 | break; |
147 | case WCD_MBHC_EN_PULLUP: |
148 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_BTN_ISRC_CTL, val: 3); |
149 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_FSM_EN, val: 1); |
150 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_MICB_CTRL, val: 1); |
151 | /* Program Button threshold registers as per MICBIAS */ |
152 | wcd_program_btn_threshold(mbhc, micbias: true); |
153 | break; |
154 | case WCD_MBHC_EN_NONE: |
155 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_BTN_ISRC_CTL, val: 0); |
156 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_FSM_EN, val: 1); |
157 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_MICB_CTRL, val: 0); |
158 | break; |
159 | default: |
160 | dev_err(mbhc->dev, "%s: Invalid parameter" , __func__); |
161 | break; |
162 | } |
163 | } |
164 | |
165 | int wcd_mbhc_event_notify(struct wcd_mbhc *mbhc, unsigned long event) |
166 | { |
167 | |
168 | struct snd_soc_component *component; |
169 | bool micbias2 = false; |
170 | |
171 | if (!mbhc) |
172 | return 0; |
173 | |
174 | component = mbhc->component; |
175 | |
176 | if (mbhc->mbhc_cb->micbias_enable_status) |
177 | micbias2 = mbhc->mbhc_cb->micbias_enable_status(component, MIC_BIAS_2); |
178 | |
179 | switch (event) { |
180 | /* MICBIAS usage change */ |
181 | case WCD_EVENT_POST_DAPM_MICBIAS_2_ON: |
182 | mbhc->is_hs_recording = true; |
183 | break; |
184 | case WCD_EVENT_POST_MICBIAS_2_ON: |
185 | /* Disable current source if micbias2 enabled */ |
186 | if (mbhc->mbhc_cb->mbhc_micbias_control) { |
187 | if (wcd_mbhc_read_field(mbhc, field: WCD_MBHC_FSM_EN)) |
188 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_BTN_ISRC_CTL, val: 0); |
189 | } else { |
190 | mbhc->is_hs_recording = true; |
191 | wcd_mbhc_curr_micbias_control(mbhc, cs_mb_en: WCD_MBHC_EN_MB); |
192 | } |
193 | break; |
194 | case WCD_EVENT_PRE_MICBIAS_2_OFF: |
195 | /* |
196 | * Before MICBIAS_2 is turned off, if FSM is enabled, |
197 | * make sure current source is enabled so as to detect |
198 | * button press/release events |
199 | */ |
200 | if (mbhc->mbhc_cb->mbhc_micbias_control/* && !mbhc->micbias_enable*/) { |
201 | if (wcd_mbhc_read_field(mbhc, field: WCD_MBHC_FSM_EN)) |
202 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_BTN_ISRC_CTL, val: 3); |
203 | } |
204 | break; |
205 | /* MICBIAS usage change */ |
206 | case WCD_EVENT_POST_DAPM_MICBIAS_2_OFF: |
207 | mbhc->is_hs_recording = false; |
208 | break; |
209 | case WCD_EVENT_POST_MICBIAS_2_OFF: |
210 | if (!mbhc->mbhc_cb->mbhc_micbias_control) |
211 | mbhc->is_hs_recording = false; |
212 | |
213 | /* Enable PULL UP if PA's are enabled */ |
214 | if ((test_bit(WCD_MBHC_EVENT_PA_HPHL, &mbhc->event_state)) || |
215 | (test_bit(WCD_MBHC_EVENT_PA_HPHR, &mbhc->event_state))) |
216 | /* enable pullup and cs, disable mb */ |
217 | wcd_mbhc_curr_micbias_control(mbhc, cs_mb_en: WCD_MBHC_EN_PULLUP); |
218 | else |
219 | /* enable current source and disable mb, pullup*/ |
220 | wcd_mbhc_curr_micbias_control(mbhc, cs_mb_en: WCD_MBHC_EN_CS); |
221 | |
222 | break; |
223 | case WCD_EVENT_POST_HPHL_PA_OFF: |
224 | clear_bit(nr: WCD_MBHC_EVENT_PA_HPHL, addr: &mbhc->event_state); |
225 | |
226 | /* check if micbias is enabled */ |
227 | if (micbias2) |
228 | /* Disable cs, pullup & enable micbias */ |
229 | wcd_mbhc_curr_micbias_control(mbhc, cs_mb_en: WCD_MBHC_EN_MB); |
230 | else |
231 | /* Disable micbias, pullup & enable cs */ |
232 | wcd_mbhc_curr_micbias_control(mbhc, cs_mb_en: WCD_MBHC_EN_CS); |
233 | break; |
234 | case WCD_EVENT_POST_HPHR_PA_OFF: |
235 | clear_bit(nr: WCD_MBHC_EVENT_PA_HPHR, addr: &mbhc->event_state); |
236 | /* check if micbias is enabled */ |
237 | if (micbias2) |
238 | /* Disable cs, pullup & enable micbias */ |
239 | wcd_mbhc_curr_micbias_control(mbhc, cs_mb_en: WCD_MBHC_EN_MB); |
240 | else |
241 | /* Disable micbias, pullup & enable cs */ |
242 | wcd_mbhc_curr_micbias_control(mbhc, cs_mb_en: WCD_MBHC_EN_CS); |
243 | break; |
244 | case WCD_EVENT_PRE_HPHL_PA_ON: |
245 | set_bit(nr: WCD_MBHC_EVENT_PA_HPHL, addr: &mbhc->event_state); |
246 | /* check if micbias is enabled */ |
247 | if (micbias2) |
248 | /* Disable cs, pullup & enable micbias */ |
249 | wcd_mbhc_curr_micbias_control(mbhc, cs_mb_en: WCD_MBHC_EN_MB); |
250 | else |
251 | /* Disable micbias, enable pullup & cs */ |
252 | wcd_mbhc_curr_micbias_control(mbhc, cs_mb_en: WCD_MBHC_EN_PULLUP); |
253 | break; |
254 | case WCD_EVENT_PRE_HPHR_PA_ON: |
255 | set_bit(nr: WCD_MBHC_EVENT_PA_HPHR, addr: &mbhc->event_state); |
256 | /* check if micbias is enabled */ |
257 | if (micbias2) |
258 | /* Disable cs, pullup & enable micbias */ |
259 | wcd_mbhc_curr_micbias_control(mbhc, cs_mb_en: WCD_MBHC_EN_MB); |
260 | else |
261 | /* Disable micbias, enable pullup & cs */ |
262 | wcd_mbhc_curr_micbias_control(mbhc, cs_mb_en: WCD_MBHC_EN_PULLUP); |
263 | break; |
264 | default: |
265 | break; |
266 | } |
267 | return 0; |
268 | } |
269 | EXPORT_SYMBOL_GPL(wcd_mbhc_event_notify); |
270 | |
271 | static int wcd_cancel_btn_work(struct wcd_mbhc *mbhc) |
272 | { |
273 | return cancel_delayed_work_sync(dwork: &mbhc->mbhc_btn_dwork); |
274 | } |
275 | |
276 | static void wcd_micbias_disable(struct wcd_mbhc *mbhc) |
277 | { |
278 | struct snd_soc_component *component = mbhc->component; |
279 | |
280 | if (mbhc->mbhc_cb->mbhc_micbias_control) |
281 | mbhc->mbhc_cb->mbhc_micbias_control(component, MIC_BIAS_2, MICB_DISABLE); |
282 | |
283 | if (mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic) |
284 | mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic(component, MIC_BIAS_2, false); |
285 | |
286 | if (mbhc->mbhc_cb->set_micbias_value) { |
287 | mbhc->mbhc_cb->set_micbias_value(component); |
288 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_MICB_CTRL, val: 0); |
289 | } |
290 | } |
291 | |
292 | static void wcd_mbhc_report_plug_removal(struct wcd_mbhc *mbhc, |
293 | enum snd_jack_types jack_type) |
294 | { |
295 | mbhc->hph_status &= ~jack_type; |
296 | /* |
297 | * cancel possibly scheduled btn work and |
298 | * report release if we reported button press |
299 | */ |
300 | if (!wcd_cancel_btn_work(mbhc) && mbhc->buttons_pressed) { |
301 | snd_soc_jack_report(jack: mbhc->jack, status: 0, mask: mbhc->buttons_pressed); |
302 | mbhc->buttons_pressed &= ~WCD_MBHC_JACK_BUTTON_MASK; |
303 | } |
304 | |
305 | wcd_micbias_disable(mbhc); |
306 | mbhc->hph_type = WCD_MBHC_HPH_NONE; |
307 | mbhc->zl = mbhc->zr = 0; |
308 | snd_soc_jack_report(jack: mbhc->jack, status: mbhc->hph_status, WCD_MBHC_JACK_MASK); |
309 | mbhc->current_plug = MBHC_PLUG_TYPE_NONE; |
310 | mbhc->force_linein = false; |
311 | } |
312 | |
313 | static void wcd_mbhc_compute_impedance(struct wcd_mbhc *mbhc) |
314 | { |
315 | |
316 | if (!mbhc->impedance_detect) |
317 | return; |
318 | |
319 | if (mbhc->cfg->linein_th != 0) { |
320 | u8 fsm_en = wcd_mbhc_read_field(mbhc, field: WCD_MBHC_FSM_EN); |
321 | /* Set MUX_CTL to AUTO for Z-det */ |
322 | |
323 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_FSM_EN, val: 0); |
324 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_MUX_CTL, val: MUX_CTL_AUTO); |
325 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_FSM_EN, val: 1); |
326 | mbhc->mbhc_cb->compute_impedance(mbhc->component, &mbhc->zl, &mbhc->zr); |
327 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_FSM_EN, val: fsm_en); |
328 | } |
329 | } |
330 | |
331 | static void wcd_mbhc_report_plug_insertion(struct wcd_mbhc *mbhc, |
332 | enum snd_jack_types jack_type) |
333 | { |
334 | bool is_pa_on; |
335 | /* |
336 | * Report removal of current jack type. |
337 | * Headphone to headset shouldn't report headphone |
338 | * removal. |
339 | */ |
340 | if (mbhc->current_plug == MBHC_PLUG_TYPE_HEADSET && |
341 | jack_type == SND_JACK_HEADPHONE) |
342 | mbhc->hph_status &= ~SND_JACK_HEADSET; |
343 | |
344 | /* Report insertion */ |
345 | switch (jack_type) { |
346 | case SND_JACK_HEADPHONE: |
347 | mbhc->current_plug = MBHC_PLUG_TYPE_HEADPHONE; |
348 | break; |
349 | case SND_JACK_HEADSET: |
350 | mbhc->current_plug = MBHC_PLUG_TYPE_HEADSET; |
351 | mbhc->jiffies_atreport = jiffies; |
352 | break; |
353 | case SND_JACK_LINEOUT: |
354 | mbhc->current_plug = MBHC_PLUG_TYPE_HIGH_HPH; |
355 | break; |
356 | default: |
357 | break; |
358 | } |
359 | |
360 | |
361 | is_pa_on = wcd_mbhc_read_field(mbhc, field: WCD_MBHC_HPH_PA_EN); |
362 | |
363 | if (!is_pa_on) { |
364 | wcd_mbhc_compute_impedance(mbhc); |
365 | if ((mbhc->zl > mbhc->cfg->linein_th) && |
366 | (mbhc->zr > mbhc->cfg->linein_th) && |
367 | (jack_type == SND_JACK_HEADPHONE)) { |
368 | jack_type = SND_JACK_LINEOUT; |
369 | mbhc->force_linein = true; |
370 | mbhc->current_plug = MBHC_PLUG_TYPE_HIGH_HPH; |
371 | if (mbhc->hph_status) { |
372 | mbhc->hph_status &= ~(SND_JACK_HEADSET | |
373 | SND_JACK_LINEOUT); |
374 | snd_soc_jack_report(jack: mbhc->jack, status: mbhc->hph_status, |
375 | WCD_MBHC_JACK_MASK); |
376 | } |
377 | } |
378 | } |
379 | |
380 | /* Do not calculate impedance again for lineout |
381 | * as during playback pa is on and impedance values |
382 | * will not be correct resulting in lineout detected |
383 | * as headphone. |
384 | */ |
385 | if (is_pa_on && mbhc->force_linein) { |
386 | jack_type = SND_JACK_LINEOUT; |
387 | mbhc->current_plug = MBHC_PLUG_TYPE_HIGH_HPH; |
388 | if (mbhc->hph_status) { |
389 | mbhc->hph_status &= ~(SND_JACK_HEADSET | |
390 | SND_JACK_LINEOUT); |
391 | snd_soc_jack_report(jack: mbhc->jack, status: mbhc->hph_status, |
392 | WCD_MBHC_JACK_MASK); |
393 | } |
394 | } |
395 | |
396 | mbhc->hph_status |= jack_type; |
397 | |
398 | if (jack_type == SND_JACK_HEADPHONE && mbhc->mbhc_cb->mbhc_micb_ramp_control) |
399 | mbhc->mbhc_cb->mbhc_micb_ramp_control(mbhc->component, false); |
400 | |
401 | snd_soc_jack_report(jack: mbhc->jack, status: (mbhc->hph_status | SND_JACK_MECHANICAL), |
402 | WCD_MBHC_JACK_MASK); |
403 | } |
404 | |
405 | static void wcd_mbhc_report_plug(struct wcd_mbhc *mbhc, int insertion, |
406 | enum snd_jack_types jack_type) |
407 | { |
408 | |
409 | WARN_ON(!mutex_is_locked(&mbhc->lock)); |
410 | |
411 | if (!insertion) /* Report removal */ |
412 | wcd_mbhc_report_plug_removal(mbhc, jack_type); |
413 | else |
414 | wcd_mbhc_report_plug_insertion(mbhc, jack_type); |
415 | |
416 | } |
417 | |
418 | static void wcd_cancel_hs_detect_plug(struct wcd_mbhc *mbhc, |
419 | struct work_struct *work) |
420 | { |
421 | mbhc->hs_detect_work_stop = true; |
422 | mutex_unlock(lock: &mbhc->lock); |
423 | cancel_work_sync(work); |
424 | mutex_lock(&mbhc->lock); |
425 | } |
426 | |
427 | static void wcd_mbhc_cancel_pending_work(struct wcd_mbhc *mbhc) |
428 | { |
429 | /* cancel pending button press */ |
430 | wcd_cancel_btn_work(mbhc); |
431 | /* cancel correct work function */ |
432 | wcd_cancel_hs_detect_plug(mbhc, work: &mbhc->correct_plug_swch); |
433 | } |
434 | |
435 | static void wcd_mbhc_elec_hs_report_unplug(struct wcd_mbhc *mbhc) |
436 | { |
437 | wcd_mbhc_cancel_pending_work(mbhc); |
438 | /* Report extension cable */ |
439 | wcd_mbhc_report_plug(mbhc, insertion: 1, jack_type: SND_JACK_LINEOUT); |
440 | /* |
441 | * Disable HPHL trigger and MIC Schmitt triggers. |
442 | * Setup for insertion detection. |
443 | */ |
444 | disable_irq_nosync(irq: mbhc->intr_ids->mbhc_hs_rem_intr); |
445 | wcd_mbhc_curr_micbias_control(mbhc, cs_mb_en: WCD_MBHC_EN_NONE); |
446 | /* Disable HW FSM */ |
447 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_FSM_EN, val: 0); |
448 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ELECT_SCHMT_ISRC, val: 3); |
449 | |
450 | /* Set the detection type appropriately */ |
451 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ELECT_DETECTION_TYPE, val: 1); |
452 | enable_irq(irq: mbhc->intr_ids->mbhc_hs_ins_intr); |
453 | } |
454 | |
455 | static void wcd_mbhc_find_plug_and_report(struct wcd_mbhc *mbhc, |
456 | enum wcd_mbhc_plug_type plug_type) |
457 | { |
458 | if (mbhc->current_plug == plug_type) |
459 | return; |
460 | |
461 | mutex_lock(&mbhc->lock); |
462 | |
463 | switch (plug_type) { |
464 | case MBHC_PLUG_TYPE_HEADPHONE: |
465 | wcd_mbhc_report_plug(mbhc, insertion: 1, jack_type: SND_JACK_HEADPHONE); |
466 | break; |
467 | case MBHC_PLUG_TYPE_HEADSET: |
468 | wcd_mbhc_report_plug(mbhc, insertion: 1, jack_type: SND_JACK_HEADSET); |
469 | break; |
470 | case MBHC_PLUG_TYPE_HIGH_HPH: |
471 | wcd_mbhc_report_plug(mbhc, insertion: 1, jack_type: SND_JACK_LINEOUT); |
472 | break; |
473 | case MBHC_PLUG_TYPE_GND_MIC_SWAP: |
474 | if (mbhc->current_plug == MBHC_PLUG_TYPE_HEADPHONE) |
475 | wcd_mbhc_report_plug(mbhc, insertion: 0, jack_type: SND_JACK_HEADPHONE); |
476 | if (mbhc->current_plug == MBHC_PLUG_TYPE_HEADSET) |
477 | wcd_mbhc_report_plug(mbhc, insertion: 0, jack_type: SND_JACK_HEADSET); |
478 | break; |
479 | default: |
480 | WARN(1, "Unexpected current plug_type %d, plug_type %d\n" , |
481 | mbhc->current_plug, plug_type); |
482 | break; |
483 | } |
484 | mutex_unlock(lock: &mbhc->lock); |
485 | } |
486 | |
487 | static void wcd_schedule_hs_detect_plug(struct wcd_mbhc *mbhc, |
488 | struct work_struct *work) |
489 | { |
490 | WARN_ON(!mutex_is_locked(&mbhc->lock)); |
491 | mbhc->hs_detect_work_stop = false; |
492 | schedule_work(work); |
493 | } |
494 | |
495 | static void wcd_mbhc_adc_detect_plug_type(struct wcd_mbhc *mbhc) |
496 | { |
497 | struct snd_soc_component *component = mbhc->component; |
498 | |
499 | WARN_ON(!mutex_is_locked(&mbhc->lock)); |
500 | |
501 | if (mbhc->mbhc_cb->hph_pull_down_ctrl) |
502 | mbhc->mbhc_cb->hph_pull_down_ctrl(component, false); |
503 | |
504 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_DETECTION_DONE, val: 0); |
505 | |
506 | if (mbhc->mbhc_cb->mbhc_micbias_control) { |
507 | mbhc->mbhc_cb->mbhc_micbias_control(component, MIC_BIAS_2, |
508 | MICB_ENABLE); |
509 | wcd_schedule_hs_detect_plug(mbhc, work: &mbhc->correct_plug_swch); |
510 | } |
511 | } |
512 | |
513 | static void mbhc_plug_detect_fn(struct work_struct *work) |
514 | { |
515 | struct wcd_mbhc *mbhc = container_of(work, struct wcd_mbhc, mbhc_plug_detect_work); |
516 | struct snd_soc_component *component = mbhc->component; |
517 | enum snd_jack_types jack_type; |
518 | bool detection_type; |
519 | |
520 | mutex_lock(&mbhc->lock); |
521 | |
522 | mbhc->in_swch_irq_handler = true; |
523 | |
524 | wcd_mbhc_cancel_pending_work(mbhc); |
525 | |
526 | detection_type = wcd_mbhc_read_field(mbhc, field: WCD_MBHC_MECH_DETECTION_TYPE); |
527 | |
528 | /* Set the detection type appropriately */ |
529 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_MECH_DETECTION_TYPE, val: !detection_type); |
530 | |
531 | /* Enable micbias ramp */ |
532 | if (mbhc->mbhc_cb->mbhc_micb_ramp_control) |
533 | mbhc->mbhc_cb->mbhc_micb_ramp_control(component, true); |
534 | |
535 | if (detection_type) { |
536 | if (mbhc->current_plug != MBHC_PLUG_TYPE_NONE) |
537 | goto exit; |
538 | /* Make sure MASTER_BIAS_CTL is enabled */ |
539 | mbhc->mbhc_cb->mbhc_bias(component, true); |
540 | mbhc->is_btn_press = false; |
541 | wcd_mbhc_adc_detect_plug_type(mbhc); |
542 | } else { |
543 | /* Disable HW FSM */ |
544 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_FSM_EN, val: 0); |
545 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_BTN_ISRC_CTL, val: 0); |
546 | mbhc->extn_cable_hph_rem = false; |
547 | |
548 | if (mbhc->current_plug == MBHC_PLUG_TYPE_NONE) |
549 | goto exit; |
550 | |
551 | mbhc->is_btn_press = false; |
552 | switch (mbhc->current_plug) { |
553 | case MBHC_PLUG_TYPE_HEADPHONE: |
554 | jack_type = SND_JACK_HEADPHONE; |
555 | break; |
556 | case MBHC_PLUG_TYPE_HEADSET: |
557 | jack_type = SND_JACK_HEADSET; |
558 | break; |
559 | case MBHC_PLUG_TYPE_HIGH_HPH: |
560 | if (mbhc->mbhc_detection_logic == WCD_DETECTION_ADC) |
561 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ELECT_ISRC_EN, val: 0); |
562 | jack_type = SND_JACK_LINEOUT; |
563 | break; |
564 | case MBHC_PLUG_TYPE_GND_MIC_SWAP: |
565 | dev_err(mbhc->dev, "Ground and Mic Swapped on plug\n" ); |
566 | goto exit; |
567 | default: |
568 | dev_err(mbhc->dev, "Invalid current plug: %d\n" , |
569 | mbhc->current_plug); |
570 | goto exit; |
571 | } |
572 | disable_irq_nosync(irq: mbhc->intr_ids->mbhc_hs_rem_intr); |
573 | disable_irq_nosync(irq: mbhc->intr_ids->mbhc_hs_ins_intr); |
574 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ELECT_DETECTION_TYPE, val: 1); |
575 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ELECT_SCHMT_ISRC, val: 0); |
576 | wcd_mbhc_report_plug(mbhc, insertion: 0, jack_type); |
577 | } |
578 | |
579 | exit: |
580 | mbhc->in_swch_irq_handler = false; |
581 | mutex_unlock(lock: &mbhc->lock); |
582 | } |
583 | |
584 | static irqreturn_t wcd_mbhc_mech_plug_detect_irq(int irq, void *data) |
585 | { |
586 | struct wcd_mbhc *mbhc = data; |
587 | |
588 | if (!mbhc->cfg->typec_analog_mux) |
589 | schedule_work(work: &mbhc->mbhc_plug_detect_work); |
590 | |
591 | return IRQ_HANDLED; |
592 | } |
593 | |
594 | int wcd_mbhc_typec_report_unplug(struct wcd_mbhc *mbhc) |
595 | { |
596 | |
597 | if (!mbhc || !mbhc->cfg->typec_analog_mux) |
598 | return -EINVAL; |
599 | |
600 | if (mbhc->mbhc_cb->clk_setup) |
601 | mbhc->mbhc_cb->clk_setup(mbhc->component, false); |
602 | |
603 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_L_DET_EN, val: 0); |
604 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_MECH_DETECTION_TYPE, val: 0); |
605 | |
606 | schedule_work(work: &mbhc->mbhc_plug_detect_work); |
607 | |
608 | return 0; |
609 | } |
610 | EXPORT_SYMBOL_GPL(wcd_mbhc_typec_report_unplug); |
611 | |
612 | int wcd_mbhc_typec_report_plug(struct wcd_mbhc *mbhc) |
613 | { |
614 | if (!mbhc || !mbhc->cfg->typec_analog_mux) |
615 | return -EINVAL; |
616 | |
617 | if (mbhc->mbhc_cb->clk_setup) |
618 | mbhc->mbhc_cb->clk_setup(mbhc->component, true); |
619 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_L_DET_EN, val: 1); |
620 | |
621 | schedule_work(work: &mbhc->mbhc_plug_detect_work); |
622 | |
623 | return 0; |
624 | } |
625 | EXPORT_SYMBOL_GPL(wcd_mbhc_typec_report_plug); |
626 | |
627 | static int wcd_mbhc_get_button_mask(struct wcd_mbhc *mbhc) |
628 | { |
629 | int mask = 0; |
630 | int btn; |
631 | |
632 | btn = wcd_mbhc_read_field(mbhc, field: WCD_MBHC_BTN_RESULT); |
633 | |
634 | switch (btn) { |
635 | case 0: |
636 | mask = SND_JACK_BTN_0; |
637 | break; |
638 | case 1: |
639 | mask = SND_JACK_BTN_1; |
640 | break; |
641 | case 2: |
642 | mask = SND_JACK_BTN_2; |
643 | break; |
644 | case 3: |
645 | mask = SND_JACK_BTN_3; |
646 | break; |
647 | case 4: |
648 | mask = SND_JACK_BTN_4; |
649 | break; |
650 | case 5: |
651 | mask = SND_JACK_BTN_5; |
652 | break; |
653 | default: |
654 | break; |
655 | } |
656 | |
657 | return mask; |
658 | } |
659 | |
660 | static void wcd_btn_long_press_fn(struct work_struct *work) |
661 | { |
662 | struct delayed_work *dwork = to_delayed_work(work); |
663 | struct wcd_mbhc *mbhc = container_of(dwork, struct wcd_mbhc, mbhc_btn_dwork); |
664 | |
665 | if (mbhc->current_plug == MBHC_PLUG_TYPE_HEADSET) |
666 | snd_soc_jack_report(jack: mbhc->jack, status: mbhc->buttons_pressed, |
667 | mask: mbhc->buttons_pressed); |
668 | } |
669 | |
670 | static irqreturn_t wcd_mbhc_btn_press_handler(int irq, void *data) |
671 | { |
672 | struct wcd_mbhc *mbhc = data; |
673 | int mask; |
674 | unsigned long msec_val; |
675 | |
676 | mutex_lock(&mbhc->lock); |
677 | wcd_cancel_btn_work(mbhc); |
678 | mbhc->is_btn_press = true; |
679 | msec_val = jiffies_to_msecs(j: jiffies - mbhc->jiffies_atreport); |
680 | |
681 | /* Too short, ignore button press */ |
682 | if (msec_val < MBHC_BUTTON_PRESS_THRESHOLD_MIN) |
683 | goto done; |
684 | |
685 | /* If switch interrupt already kicked in, ignore button press */ |
686 | if (mbhc->in_swch_irq_handler) |
687 | goto done; |
688 | |
689 | /* Plug isn't headset, ignore button press */ |
690 | if (mbhc->current_plug != MBHC_PLUG_TYPE_HEADSET) |
691 | goto done; |
692 | |
693 | mask = wcd_mbhc_get_button_mask(mbhc); |
694 | mbhc->buttons_pressed |= mask; |
695 | if (schedule_delayed_work(dwork: &mbhc->mbhc_btn_dwork, delay: msecs_to_jiffies(m: 400)) == 0) |
696 | WARN(1, "Button pressed twice without release event\n" ); |
697 | done: |
698 | mutex_unlock(lock: &mbhc->lock); |
699 | return IRQ_HANDLED; |
700 | } |
701 | |
702 | static irqreturn_t wcd_mbhc_btn_release_handler(int irq, void *data) |
703 | { |
704 | struct wcd_mbhc *mbhc = data; |
705 | int ret; |
706 | |
707 | mutex_lock(&mbhc->lock); |
708 | if (mbhc->is_btn_press) |
709 | mbhc->is_btn_press = false; |
710 | else /* fake btn press */ |
711 | goto exit; |
712 | |
713 | if (!(mbhc->buttons_pressed & WCD_MBHC_JACK_BUTTON_MASK)) |
714 | goto exit; |
715 | |
716 | ret = wcd_cancel_btn_work(mbhc); |
717 | if (ret == 0) { /* Reporting long button release event */ |
718 | snd_soc_jack_report(jack: mbhc->jack, status: 0, mask: mbhc->buttons_pressed); |
719 | } else { |
720 | if (!mbhc->in_swch_irq_handler) { |
721 | /* Reporting btn press n Release */ |
722 | snd_soc_jack_report(jack: mbhc->jack, status: mbhc->buttons_pressed, |
723 | mask: mbhc->buttons_pressed); |
724 | snd_soc_jack_report(jack: mbhc->jack, status: 0, mask: mbhc->buttons_pressed); |
725 | } |
726 | } |
727 | mbhc->buttons_pressed &= ~WCD_MBHC_JACK_BUTTON_MASK; |
728 | exit: |
729 | mutex_unlock(lock: &mbhc->lock); |
730 | |
731 | return IRQ_HANDLED; |
732 | } |
733 | |
734 | static irqreturn_t wcd_mbhc_hph_ocp_irq(struct wcd_mbhc *mbhc, bool hphr) |
735 | { |
736 | |
737 | /* TODO Find a better way to report this to Userspace */ |
738 | dev_err(mbhc->dev, "MBHC Over Current on %s detected\n" , |
739 | hphr ? "HPHR" : "HPHL" ); |
740 | |
741 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_OCP_FSM_EN, val: 0); |
742 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_OCP_FSM_EN, val: 1); |
743 | |
744 | return IRQ_HANDLED; |
745 | } |
746 | |
747 | static irqreturn_t wcd_mbhc_hphl_ocp_irq(int irq, void *data) |
748 | { |
749 | return wcd_mbhc_hph_ocp_irq(mbhc: data, hphr: false); |
750 | } |
751 | |
752 | static irqreturn_t wcd_mbhc_hphr_ocp_irq(int irq, void *data) |
753 | { |
754 | return wcd_mbhc_hph_ocp_irq(mbhc: data, hphr: true); |
755 | } |
756 | |
757 | static int wcd_mbhc_initialise(struct wcd_mbhc *mbhc) |
758 | { |
759 | struct snd_soc_component *component = mbhc->component; |
760 | int ret; |
761 | |
762 | ret = pm_runtime_get_sync(dev: component->dev); |
763 | if (ret < 0 && ret != -EACCES) { |
764 | dev_err_ratelimited(component->dev, |
765 | "pm_runtime_get_sync failed in %s, ret %d\n" , |
766 | __func__, ret); |
767 | pm_runtime_put_noidle(dev: component->dev); |
768 | return ret; |
769 | } |
770 | |
771 | mutex_lock(&mbhc->lock); |
772 | |
773 | if (mbhc->cfg->typec_analog_mux) |
774 | mbhc->swap_thr = GND_MIC_USBC_SWAP_THRESHOLD; |
775 | else |
776 | mbhc->swap_thr = GND_MIC_SWAP_THRESHOLD; |
777 | |
778 | /* setup HS detection */ |
779 | if (mbhc->mbhc_cb->hph_pull_up_control_v2) |
780 | mbhc->mbhc_cb->hph_pull_up_control_v2(component, |
781 | mbhc->cfg->typec_analog_mux ? |
782 | HS_PULLUP_I_OFF : HS_PULLUP_I_DEFAULT); |
783 | else if (mbhc->mbhc_cb->hph_pull_up_control) |
784 | mbhc->mbhc_cb->hph_pull_up_control(component, |
785 | mbhc->cfg->typec_analog_mux ? |
786 | I_OFF : I_DEFAULT); |
787 | else |
788 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_HS_L_DET_PULL_UP_CTRL, |
789 | val: mbhc->cfg->typec_analog_mux ? 0 : 3); |
790 | |
791 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_HPHL_PLUG_TYPE, val: mbhc->cfg->hphl_swh); |
792 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_GND_PLUG_TYPE, val: mbhc->cfg->gnd_swh); |
793 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_SW_HPH_LP_100K_TO_GND, val: 1); |
794 | if (mbhc->cfg->gnd_det_en && mbhc->mbhc_cb->mbhc_gnd_det_ctrl) |
795 | mbhc->mbhc_cb->mbhc_gnd_det_ctrl(component, true); |
796 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_HS_L_DET_PULL_UP_COMP_CTRL, val: 1); |
797 | |
798 | /* Plug detect is triggered manually if analog goes through USBCC */ |
799 | if (mbhc->cfg->typec_analog_mux) |
800 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_L_DET_EN, val: 0); |
801 | else |
802 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_L_DET_EN, val: 1); |
803 | |
804 | if (mbhc->cfg->typec_analog_mux) |
805 | /* Insertion debounce set to 48ms */ |
806 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_INSREM_DBNC, val: 4); |
807 | else |
808 | /* Insertion debounce set to 96ms */ |
809 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_INSREM_DBNC, val: 6); |
810 | |
811 | /* Button Debounce set to 16ms */ |
812 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_BTN_DBNC, val: 2); |
813 | |
814 | /* enable bias */ |
815 | mbhc->mbhc_cb->mbhc_bias(component, true); |
816 | /* enable MBHC clock */ |
817 | if (mbhc->mbhc_cb->clk_setup) |
818 | mbhc->mbhc_cb->clk_setup(component, |
819 | mbhc->cfg->typec_analog_mux ? false : true); |
820 | |
821 | /* program HS_VREF value */ |
822 | wcd_program_hs_vref(mbhc); |
823 | |
824 | wcd_program_btn_threshold(mbhc, micbias: false); |
825 | |
826 | mutex_unlock(lock: &mbhc->lock); |
827 | |
828 | pm_runtime_mark_last_busy(dev: component->dev); |
829 | pm_runtime_put_autosuspend(dev: component->dev); |
830 | |
831 | return 0; |
832 | } |
833 | |
834 | static int wcd_mbhc_get_micbias(struct wcd_mbhc *mbhc) |
835 | { |
836 | int micbias = 0; |
837 | |
838 | if (mbhc->mbhc_cb->get_micbias_val) { |
839 | mbhc->mbhc_cb->get_micbias_val(mbhc->component, &micbias); |
840 | } else { |
841 | u8 vout_ctl = 0; |
842 | /* Read MBHC Micbias (Mic Bias2) voltage */ |
843 | vout_ctl = wcd_mbhc_read_field(mbhc, field: WCD_MBHC_MICB2_VOUT); |
844 | /* Formula for getting micbias from vout |
845 | * micbias = 1.0V + VOUT_CTL * 50mV |
846 | */ |
847 | micbias = 1000 + (vout_ctl * 50); |
848 | } |
849 | return micbias; |
850 | } |
851 | |
852 | static int wcd_get_voltage_from_adc(u8 val, int micbias) |
853 | { |
854 | /* Formula for calculating voltage from ADC |
855 | * Voltage = ADC_RESULT*12.5mV*V_MICBIAS/1.8 |
856 | */ |
857 | return ((val * 125 * micbias)/(WCD_MBHC_ADC_MICBIAS_MV * 10)); |
858 | } |
859 | |
860 | static int wcd_measure_adc_continuous(struct wcd_mbhc *mbhc) |
861 | { |
862 | u8 adc_result; |
863 | int output_mv; |
864 | int retry = 3; |
865 | u8 adc_en; |
866 | |
867 | /* Pre-requisites for ADC continuous measurement */ |
868 | /* Read legacy electircal detection and disable */ |
869 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ELECT_SCHMT_ISRC, val: 0x00); |
870 | /* Set ADC to continuous measurement */ |
871 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ADC_MODE, val: 1); |
872 | /* Read ADC Enable bit to restore after adc measurement */ |
873 | adc_en = wcd_mbhc_read_field(mbhc, field: WCD_MBHC_ADC_EN); |
874 | /* Disable ADC_ENABLE bit */ |
875 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ADC_EN, val: 0); |
876 | /* Disable MBHC FSM */ |
877 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_FSM_EN, val: 0); |
878 | /* Set the MUX selection to IN2P */ |
879 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_MUX_CTL, val: MUX_CTL_IN2P); |
880 | /* Enable MBHC FSM */ |
881 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_FSM_EN, val: 1); |
882 | /* Enable ADC_ENABLE bit */ |
883 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ADC_EN, val: 1); |
884 | |
885 | while (retry--) { |
886 | /* wait for 3 msec before reading ADC result */ |
887 | usleep_range(min: 3000, max: 3100); |
888 | adc_result = wcd_mbhc_read_field(mbhc, field: WCD_MBHC_ADC_RESULT); |
889 | } |
890 | |
891 | /* Restore ADC Enable */ |
892 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ADC_EN, val: adc_en); |
893 | /* Get voltage from ADC result */ |
894 | output_mv = wcd_get_voltage_from_adc(val: adc_result, micbias: wcd_mbhc_get_micbias(mbhc)); |
895 | |
896 | return output_mv; |
897 | } |
898 | |
899 | static int wcd_measure_adc_once(struct wcd_mbhc *mbhc, int mux_ctl) |
900 | { |
901 | struct device *dev = mbhc->dev; |
902 | u8 adc_timeout = 0; |
903 | u8 adc_complete = 0; |
904 | u8 adc_result; |
905 | int retry = 6; |
906 | int ret; |
907 | int output_mv = 0; |
908 | u8 adc_en; |
909 | |
910 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ADC_MODE, val: 0); |
911 | /* Read ADC Enable bit to restore after adc measurement */ |
912 | adc_en = wcd_mbhc_read_field(mbhc, field: WCD_MBHC_ADC_EN); |
913 | /* Trigger ADC one time measurement */ |
914 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ADC_EN, val: 0); |
915 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_FSM_EN, val: 0); |
916 | /* Set the appropriate MUX selection */ |
917 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_MUX_CTL, val: mux_ctl); |
918 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_FSM_EN, val: 1); |
919 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ADC_EN, val: 1); |
920 | |
921 | while (retry--) { |
922 | /* wait for 600usec to get adc results */ |
923 | usleep_range(min: 600, max: 610); |
924 | |
925 | /* check for ADC Timeout */ |
926 | adc_timeout = wcd_mbhc_read_field(mbhc, field: WCD_MBHC_ADC_TIMEOUT); |
927 | if (adc_timeout) |
928 | continue; |
929 | |
930 | /* Read ADC complete bit */ |
931 | adc_complete = wcd_mbhc_read_field(mbhc, field: WCD_MBHC_ADC_COMPLETE); |
932 | if (!adc_complete) |
933 | continue; |
934 | |
935 | /* Read ADC result */ |
936 | adc_result = wcd_mbhc_read_field(mbhc, field: WCD_MBHC_ADC_RESULT); |
937 | |
938 | /* Get voltage from ADC result */ |
939 | output_mv = wcd_get_voltage_from_adc(val: adc_result, |
940 | micbias: wcd_mbhc_get_micbias(mbhc)); |
941 | break; |
942 | } |
943 | |
944 | /* Restore ADC Enable */ |
945 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ADC_EN, val: adc_en); |
946 | |
947 | if (retry <= 0) { |
948 | dev_err(dev, "%s: adc complete: %d, adc timeout: %d\n" , |
949 | __func__, adc_complete, adc_timeout); |
950 | ret = -EINVAL; |
951 | } else { |
952 | ret = output_mv; |
953 | } |
954 | |
955 | return ret; |
956 | } |
957 | |
958 | /* To determine if cross connection occurred */ |
959 | static int wcd_check_cross_conn(struct wcd_mbhc *mbhc) |
960 | { |
961 | u8 adc_mode, elect_ctl, adc_en, fsm_en; |
962 | int hphl_adc_res, hphr_adc_res; |
963 | bool is_cross_conn = false; |
964 | |
965 | /* If PA is enabled, dont check for cross-connection */ |
966 | if (wcd_mbhc_read_field(mbhc, field: WCD_MBHC_HPH_PA_EN)) |
967 | return -EINVAL; |
968 | |
969 | /* Read legacy electircal detection and disable */ |
970 | elect_ctl = wcd_mbhc_read_field(mbhc, field: WCD_MBHC_ELECT_SCHMT_ISRC); |
971 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ELECT_SCHMT_ISRC, val: 0); |
972 | |
973 | /* Read and set ADC to single measurement */ |
974 | adc_mode = wcd_mbhc_read_field(mbhc, field: WCD_MBHC_ADC_MODE); |
975 | /* Read ADC Enable bit to restore after adc measurement */ |
976 | adc_en = wcd_mbhc_read_field(mbhc, field: WCD_MBHC_ADC_EN); |
977 | /* Read FSM status */ |
978 | fsm_en = wcd_mbhc_read_field(mbhc, field: WCD_MBHC_FSM_EN); |
979 | |
980 | /* Get adc result for HPH L */ |
981 | hphl_adc_res = wcd_measure_adc_once(mbhc, mux_ctl: MUX_CTL_HPH_L); |
982 | if (hphl_adc_res < 0) |
983 | return hphl_adc_res; |
984 | |
985 | /* Get adc result for HPH R in mV */ |
986 | hphr_adc_res = wcd_measure_adc_once(mbhc, mux_ctl: MUX_CTL_HPH_R); |
987 | if (hphr_adc_res < 0) |
988 | return hphr_adc_res; |
989 | |
990 | if (hphl_adc_res > HPHL_CROSS_CONN_THRESHOLD || |
991 | hphr_adc_res > HPHL_CROSS_CONN_THRESHOLD) |
992 | is_cross_conn = true; |
993 | |
994 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_FSM_EN, val: 0); |
995 | /* Set the MUX selection to Auto */ |
996 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_MUX_CTL, val: MUX_CTL_AUTO); |
997 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_FSM_EN, val: 1); |
998 | /* Restore ADC Enable */ |
999 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ADC_EN, val: adc_en); |
1000 | /* Restore ADC mode */ |
1001 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ADC_MODE, val: adc_mode); |
1002 | /* Restore FSM state */ |
1003 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_FSM_EN, val: fsm_en); |
1004 | /* Restore electrical detection */ |
1005 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ELECT_SCHMT_ISRC, val: elect_ctl); |
1006 | |
1007 | return is_cross_conn; |
1008 | } |
1009 | |
1010 | static int wcd_mbhc_adc_get_hs_thres(struct wcd_mbhc *mbhc) |
1011 | { |
1012 | int hs_threshold, micbias_mv; |
1013 | |
1014 | micbias_mv = wcd_mbhc_get_micbias(mbhc); |
1015 | if (mbhc->cfg->hs_thr) { |
1016 | if (mbhc->cfg->micb_mv == micbias_mv) |
1017 | hs_threshold = mbhc->cfg->hs_thr; |
1018 | else |
1019 | hs_threshold = (mbhc->cfg->hs_thr * |
1020 | micbias_mv) / mbhc->cfg->micb_mv; |
1021 | } else { |
1022 | hs_threshold = ((WCD_MBHC_ADC_HS_THRESHOLD_MV * |
1023 | micbias_mv) / WCD_MBHC_ADC_MICBIAS_MV); |
1024 | } |
1025 | return hs_threshold; |
1026 | } |
1027 | |
1028 | static int wcd_mbhc_adc_get_hph_thres(struct wcd_mbhc *mbhc) |
1029 | { |
1030 | int hph_threshold, micbias_mv; |
1031 | |
1032 | micbias_mv = wcd_mbhc_get_micbias(mbhc); |
1033 | if (mbhc->cfg->hph_thr) { |
1034 | if (mbhc->cfg->micb_mv == micbias_mv) |
1035 | hph_threshold = mbhc->cfg->hph_thr; |
1036 | else |
1037 | hph_threshold = (mbhc->cfg->hph_thr * |
1038 | micbias_mv) / mbhc->cfg->micb_mv; |
1039 | } else { |
1040 | hph_threshold = ((WCD_MBHC_ADC_HPH_THRESHOLD_MV * |
1041 | micbias_mv) / WCD_MBHC_ADC_MICBIAS_MV); |
1042 | } |
1043 | return hph_threshold; |
1044 | } |
1045 | |
1046 | static void wcd_mbhc_adc_update_fsm_source(struct wcd_mbhc *mbhc, |
1047 | enum wcd_mbhc_plug_type plug_type) |
1048 | { |
1049 | bool micbias2 = false; |
1050 | |
1051 | switch (plug_type) { |
1052 | case MBHC_PLUG_TYPE_HEADPHONE: |
1053 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_BTN_ISRC_CTL, val: 3); |
1054 | break; |
1055 | case MBHC_PLUG_TYPE_HEADSET: |
1056 | if (mbhc->mbhc_cb->micbias_enable_status) |
1057 | micbias2 = mbhc->mbhc_cb->micbias_enable_status(mbhc->component, |
1058 | MIC_BIAS_2); |
1059 | |
1060 | if (!mbhc->is_hs_recording && !micbias2) |
1061 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_BTN_ISRC_CTL, val: 3); |
1062 | break; |
1063 | default: |
1064 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_BTN_ISRC_CTL, val: 0); |
1065 | break; |
1066 | |
1067 | } |
1068 | } |
1069 | |
1070 | static void wcd_mbhc_bcs_enable(struct wcd_mbhc *mbhc, int plug_type, bool enable) |
1071 | { |
1072 | switch (plug_type) { |
1073 | case MBHC_PLUG_TYPE_HEADSET: |
1074 | case MBHC_PLUG_TYPE_HEADPHONE: |
1075 | if (mbhc->mbhc_cb->bcs_enable) |
1076 | mbhc->mbhc_cb->bcs_enable(mbhc->component, enable); |
1077 | break; |
1078 | default: |
1079 | break; |
1080 | } |
1081 | } |
1082 | |
1083 | static int wcd_mbhc_get_plug_from_adc(struct wcd_mbhc *mbhc, int adc_result) |
1084 | |
1085 | { |
1086 | enum wcd_mbhc_plug_type plug_type; |
1087 | u32 hph_thr, hs_thr; |
1088 | |
1089 | hs_thr = wcd_mbhc_adc_get_hs_thres(mbhc); |
1090 | hph_thr = wcd_mbhc_adc_get_hph_thres(mbhc); |
1091 | |
1092 | if (adc_result < hph_thr) |
1093 | plug_type = MBHC_PLUG_TYPE_HEADPHONE; |
1094 | else if (adc_result > hs_thr) |
1095 | plug_type = MBHC_PLUG_TYPE_HIGH_HPH; |
1096 | else |
1097 | plug_type = MBHC_PLUG_TYPE_HEADSET; |
1098 | |
1099 | return plug_type; |
1100 | } |
1101 | |
1102 | static int wcd_mbhc_get_spl_hs_thres(struct wcd_mbhc *mbhc) |
1103 | { |
1104 | int hs_threshold, micbias_mv; |
1105 | |
1106 | micbias_mv = wcd_mbhc_get_micbias(mbhc); |
1107 | if (mbhc->cfg->hs_thr && mbhc->cfg->micb_mv != WCD_MBHC_ADC_MICBIAS_MV) { |
1108 | if (mbhc->cfg->micb_mv == micbias_mv) |
1109 | hs_threshold = mbhc->cfg->hs_thr; |
1110 | else |
1111 | hs_threshold = (mbhc->cfg->hs_thr * micbias_mv) / mbhc->cfg->micb_mv; |
1112 | } else { |
1113 | hs_threshold = ((WCD_MBHC_ADC_HS_THRESHOLD_MV * micbias_mv) / |
1114 | WCD_MBHC_ADC_MICBIAS_MV); |
1115 | } |
1116 | return hs_threshold; |
1117 | } |
1118 | |
1119 | static bool wcd_mbhc_check_for_spl_headset(struct wcd_mbhc *mbhc) |
1120 | { |
1121 | bool is_spl_hs = false; |
1122 | int output_mv, hs_threshold, hph_threshold; |
1123 | |
1124 | if (!mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic) |
1125 | return false; |
1126 | |
1127 | /* Bump up MIC_BIAS2 to 2.7V */ |
1128 | mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic(mbhc->component, MIC_BIAS_2, true); |
1129 | usleep_range(min: 10000, max: 10100); |
1130 | |
1131 | output_mv = wcd_measure_adc_once(mbhc, mux_ctl: MUX_CTL_IN2P); |
1132 | hs_threshold = wcd_mbhc_get_spl_hs_thres(mbhc); |
1133 | hph_threshold = wcd_mbhc_adc_get_hph_thres(mbhc); |
1134 | |
1135 | if (!(output_mv > hs_threshold || output_mv < hph_threshold)) |
1136 | is_spl_hs = true; |
1137 | |
1138 | /* Back MIC_BIAS2 to 1.8v if the type is not special headset */ |
1139 | if (!is_spl_hs) { |
1140 | mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic(mbhc->component, MIC_BIAS_2, false); |
1141 | /* Add 10ms delay for micbias to settle */ |
1142 | usleep_range(min: 10000, max: 10100); |
1143 | } |
1144 | |
1145 | return is_spl_hs; |
1146 | } |
1147 | |
1148 | static void wcd_correct_swch_plug(struct work_struct *work) |
1149 | { |
1150 | struct wcd_mbhc *mbhc; |
1151 | struct snd_soc_component *component; |
1152 | enum wcd_mbhc_plug_type plug_type = MBHC_PLUG_TYPE_INVALID; |
1153 | unsigned long timeout; |
1154 | int pt_gnd_mic_swap_cnt = 0; |
1155 | int output_mv, cross_conn, hs_threshold, try = 0, micbias_mv; |
1156 | bool is_spl_hs = false; |
1157 | bool is_pa_on; |
1158 | int ret; |
1159 | |
1160 | mbhc = container_of(work, struct wcd_mbhc, correct_plug_swch); |
1161 | component = mbhc->component; |
1162 | |
1163 | ret = pm_runtime_get_sync(dev: component->dev); |
1164 | if (ret < 0 && ret != -EACCES) { |
1165 | dev_err_ratelimited(component->dev, |
1166 | "pm_runtime_get_sync failed in %s, ret %d\n" , |
1167 | __func__, ret); |
1168 | pm_runtime_put_noidle(dev: component->dev); |
1169 | return; |
1170 | } |
1171 | micbias_mv = wcd_mbhc_get_micbias(mbhc); |
1172 | hs_threshold = wcd_mbhc_adc_get_hs_thres(mbhc); |
1173 | |
1174 | /* Mask ADC COMPLETE interrupt */ |
1175 | disable_irq_nosync(irq: mbhc->intr_ids->mbhc_hs_ins_intr); |
1176 | |
1177 | /* Check for cross connection */ |
1178 | do { |
1179 | cross_conn = wcd_check_cross_conn(mbhc); |
1180 | try++; |
1181 | } while (try < mbhc->swap_thr); |
1182 | |
1183 | if (cross_conn > 0) { |
1184 | plug_type = MBHC_PLUG_TYPE_GND_MIC_SWAP; |
1185 | dev_err(mbhc->dev, "cross connection found, Plug type %d\n" , |
1186 | plug_type); |
1187 | goto correct_plug_type; |
1188 | } |
1189 | |
1190 | /* Find plug type */ |
1191 | output_mv = wcd_measure_adc_continuous(mbhc); |
1192 | plug_type = wcd_mbhc_get_plug_from_adc(mbhc, adc_result: output_mv); |
1193 | |
1194 | /* |
1195 | * Report plug type if it is either headset or headphone |
1196 | * else start the 3 sec loop |
1197 | */ |
1198 | switch (plug_type) { |
1199 | case MBHC_PLUG_TYPE_HEADPHONE: |
1200 | wcd_mbhc_find_plug_and_report(mbhc, plug_type); |
1201 | break; |
1202 | case MBHC_PLUG_TYPE_HEADSET: |
1203 | wcd_mbhc_find_plug_and_report(mbhc, plug_type); |
1204 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ADC_MODE, val: 0); |
1205 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ADC_EN, val: 0); |
1206 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_DETECTION_DONE, val: 1); |
1207 | break; |
1208 | default: |
1209 | break; |
1210 | } |
1211 | |
1212 | correct_plug_type: |
1213 | |
1214 | /* Disable BCS slow insertion detection */ |
1215 | wcd_mbhc_bcs_enable(mbhc, plug_type, enable: false); |
1216 | |
1217 | timeout = jiffies + msecs_to_jiffies(HS_DETECT_PLUG_TIME_MS); |
1218 | |
1219 | while (!time_after(jiffies, timeout)) { |
1220 | if (mbhc->hs_detect_work_stop) { |
1221 | wcd_micbias_disable(mbhc); |
1222 | goto exit; |
1223 | } |
1224 | |
1225 | msleep(msecs: 180); |
1226 | /* |
1227 | * Use ADC single mode to minimize the chance of missing out |
1228 | * btn press/release for HEADSET type during correct work. |
1229 | */ |
1230 | output_mv = wcd_measure_adc_once(mbhc, mux_ctl: MUX_CTL_IN2P); |
1231 | plug_type = wcd_mbhc_get_plug_from_adc(mbhc, adc_result: output_mv); |
1232 | is_pa_on = wcd_mbhc_read_field(mbhc, field: WCD_MBHC_HPH_PA_EN); |
1233 | |
1234 | if (output_mv > hs_threshold && !is_spl_hs) { |
1235 | is_spl_hs = wcd_mbhc_check_for_spl_headset(mbhc); |
1236 | output_mv = wcd_measure_adc_once(mbhc, mux_ctl: MUX_CTL_IN2P); |
1237 | |
1238 | if (is_spl_hs) { |
1239 | hs_threshold *= wcd_mbhc_get_micbias(mbhc); |
1240 | hs_threshold /= micbias_mv; |
1241 | } |
1242 | } |
1243 | |
1244 | if ((output_mv <= hs_threshold) && !is_pa_on) { |
1245 | /* Check for cross connection*/ |
1246 | cross_conn = wcd_check_cross_conn(mbhc); |
1247 | if (cross_conn > 0) { /* cross-connection */ |
1248 | pt_gnd_mic_swap_cnt++; |
1249 | if (pt_gnd_mic_swap_cnt < mbhc->swap_thr) |
1250 | continue; |
1251 | else |
1252 | plug_type = MBHC_PLUG_TYPE_GND_MIC_SWAP; |
1253 | } else if (!cross_conn) { /* no cross connection */ |
1254 | pt_gnd_mic_swap_cnt = 0; |
1255 | plug_type = wcd_mbhc_get_plug_from_adc(mbhc, adc_result: output_mv); |
1256 | continue; |
1257 | } else /* Error if (cross_conn < 0) */ |
1258 | continue; |
1259 | |
1260 | if (pt_gnd_mic_swap_cnt == mbhc->swap_thr) { |
1261 | /* US_EU gpio present, flip switch */ |
1262 | if (mbhc->cfg->swap_gnd_mic) { |
1263 | if (mbhc->cfg->swap_gnd_mic(component, true)) |
1264 | continue; |
1265 | } |
1266 | } |
1267 | } |
1268 | |
1269 | /* cable is extension cable */ |
1270 | if (output_mv > hs_threshold || mbhc->force_linein) |
1271 | plug_type = MBHC_PLUG_TYPE_HIGH_HPH; |
1272 | } |
1273 | |
1274 | wcd_mbhc_bcs_enable(mbhc, plug_type, enable: true); |
1275 | |
1276 | if (plug_type == MBHC_PLUG_TYPE_HIGH_HPH) { |
1277 | if (is_spl_hs) |
1278 | plug_type = MBHC_PLUG_TYPE_HEADSET; |
1279 | else |
1280 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ELECT_ISRC_EN, val: 1); |
1281 | } |
1282 | |
1283 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ADC_MODE, val: 0); |
1284 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ADC_EN, val: 0); |
1285 | wcd_mbhc_find_plug_and_report(mbhc, plug_type); |
1286 | |
1287 | /* |
1288 | * Set DETECTION_DONE bit for HEADSET |
1289 | * so that btn press/release interrupt can be generated. |
1290 | * For other plug type, clear the bit. |
1291 | */ |
1292 | if (plug_type == MBHC_PLUG_TYPE_HEADSET) |
1293 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_DETECTION_DONE, val: 1); |
1294 | else |
1295 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_DETECTION_DONE, val: 0); |
1296 | |
1297 | if (mbhc->mbhc_cb->mbhc_micbias_control) |
1298 | wcd_mbhc_adc_update_fsm_source(mbhc, plug_type); |
1299 | |
1300 | exit: |
1301 | if (mbhc->mbhc_cb->mbhc_micbias_control/* && !mbhc->micbias_enable*/) |
1302 | mbhc->mbhc_cb->mbhc_micbias_control(component, MIC_BIAS_2, MICB_DISABLE); |
1303 | |
1304 | /* |
1305 | * If plug type is corrected from special headset to headphone, |
1306 | * clear the micbias enable flag, set micbias back to 1.8V and |
1307 | * disable micbias. |
1308 | */ |
1309 | if (plug_type == MBHC_PLUG_TYPE_HEADPHONE) { |
1310 | wcd_micbias_disable(mbhc); |
1311 | /* |
1312 | * Enable ADC COMPLETE interrupt for HEADPHONE. |
1313 | * Btn release may happen after the correct work, ADC COMPLETE |
1314 | * interrupt needs to be captured to correct plug type. |
1315 | */ |
1316 | enable_irq(irq: mbhc->intr_ids->mbhc_hs_ins_intr); |
1317 | } |
1318 | |
1319 | if (mbhc->mbhc_cb->hph_pull_down_ctrl) |
1320 | mbhc->mbhc_cb->hph_pull_down_ctrl(component, true); |
1321 | |
1322 | pm_runtime_mark_last_busy(dev: component->dev); |
1323 | pm_runtime_put_autosuspend(dev: component->dev); |
1324 | } |
1325 | |
1326 | static irqreturn_t wcd_mbhc_adc_hs_rem_irq(int irq, void *data) |
1327 | { |
1328 | struct wcd_mbhc *mbhc = data; |
1329 | unsigned long timeout; |
1330 | int adc_threshold, output_mv, retry = 0; |
1331 | |
1332 | mutex_lock(&mbhc->lock); |
1333 | timeout = jiffies + msecs_to_jiffies(WCD_FAKE_REMOVAL_MIN_PERIOD_MS); |
1334 | adc_threshold = wcd_mbhc_adc_get_hs_thres(mbhc); |
1335 | |
1336 | do { |
1337 | retry++; |
1338 | /* |
1339 | * read output_mv every 10ms to look for |
1340 | * any change in IN2_P |
1341 | */ |
1342 | usleep_range(min: 10000, max: 10100); |
1343 | output_mv = wcd_measure_adc_once(mbhc, mux_ctl: MUX_CTL_IN2P); |
1344 | |
1345 | /* Check for fake removal */ |
1346 | if ((output_mv <= adc_threshold) && retry > FAKE_REM_RETRY_ATTEMPTS) |
1347 | goto exit; |
1348 | } while (!time_after(jiffies, timeout)); |
1349 | |
1350 | /* |
1351 | * ADC COMPLETE and ELEC_REM interrupts are both enabled for |
1352 | * HEADPHONE, need to reject the ADC COMPLETE interrupt which |
1353 | * follows ELEC_REM one when HEADPHONE is removed. |
1354 | */ |
1355 | if (mbhc->current_plug == MBHC_PLUG_TYPE_HEADPHONE) |
1356 | mbhc->extn_cable_hph_rem = true; |
1357 | |
1358 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_DETECTION_DONE, val: 0); |
1359 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ADC_MODE, val: 0); |
1360 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_ADC_EN, val: 0); |
1361 | wcd_mbhc_elec_hs_report_unplug(mbhc); |
1362 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_BTN_ISRC_CTL, val: 0); |
1363 | |
1364 | exit: |
1365 | mutex_unlock(lock: &mbhc->lock); |
1366 | return IRQ_HANDLED; |
1367 | } |
1368 | |
1369 | static irqreturn_t wcd_mbhc_adc_hs_ins_irq(int irq, void *data) |
1370 | { |
1371 | struct wcd_mbhc *mbhc = data; |
1372 | u8 clamp_state; |
1373 | u8 clamp_retry = WCD_MBHC_FAKE_INS_RETRY; |
1374 | |
1375 | /* |
1376 | * ADC COMPLETE and ELEC_REM interrupts are both enabled for HEADPHONE, |
1377 | * need to reject the ADC COMPLETE interrupt which follows ELEC_REM one |
1378 | * when HEADPHONE is removed. |
1379 | */ |
1380 | if (mbhc->extn_cable_hph_rem == true) { |
1381 | mbhc->extn_cable_hph_rem = false; |
1382 | return IRQ_HANDLED; |
1383 | } |
1384 | |
1385 | do { |
1386 | clamp_state = wcd_mbhc_read_field(mbhc, field: WCD_MBHC_IN2P_CLAMP_STATE); |
1387 | if (clamp_state) |
1388 | return IRQ_HANDLED; |
1389 | /* |
1390 | * check clamp for 120ms but at 30ms chunks to leave |
1391 | * room for other interrupts to be processed |
1392 | */ |
1393 | usleep_range(min: 30000, max: 30100); |
1394 | } while (--clamp_retry); |
1395 | |
1396 | /* |
1397 | * If current plug is headphone then there is no chance to |
1398 | * get ADC complete interrupt, so connected cable should be |
1399 | * headset not headphone. |
1400 | */ |
1401 | if (mbhc->current_plug == MBHC_PLUG_TYPE_HEADPHONE) { |
1402 | disable_irq_nosync(irq: mbhc->intr_ids->mbhc_hs_ins_intr); |
1403 | wcd_mbhc_write_field(mbhc, field: WCD_MBHC_DETECTION_DONE, val: 1); |
1404 | wcd_mbhc_find_plug_and_report(mbhc, plug_type: MBHC_PLUG_TYPE_HEADSET); |
1405 | return IRQ_HANDLED; |
1406 | } |
1407 | |
1408 | return IRQ_HANDLED; |
1409 | } |
1410 | |
1411 | int wcd_mbhc_get_impedance(struct wcd_mbhc *mbhc, uint32_t *zl, uint32_t *zr) |
1412 | { |
1413 | *zl = mbhc->zl; |
1414 | *zr = mbhc->zr; |
1415 | |
1416 | if (*zl && *zr) |
1417 | return 0; |
1418 | else |
1419 | return -EINVAL; |
1420 | } |
1421 | EXPORT_SYMBOL(wcd_mbhc_get_impedance); |
1422 | |
1423 | void wcd_mbhc_set_hph_type(struct wcd_mbhc *mbhc, int hph_type) |
1424 | { |
1425 | mbhc->hph_type = hph_type; |
1426 | } |
1427 | EXPORT_SYMBOL(wcd_mbhc_set_hph_type); |
1428 | |
1429 | int wcd_mbhc_get_hph_type(struct wcd_mbhc *mbhc) |
1430 | { |
1431 | return mbhc->hph_type; |
1432 | } |
1433 | EXPORT_SYMBOL(wcd_mbhc_get_hph_type); |
1434 | |
1435 | int wcd_mbhc_start(struct wcd_mbhc *mbhc, struct wcd_mbhc_config *cfg, |
1436 | struct snd_soc_jack *jack) |
1437 | { |
1438 | if (!mbhc || !cfg || !jack) |
1439 | return -EINVAL; |
1440 | |
1441 | mbhc->cfg = cfg; |
1442 | mbhc->jack = jack; |
1443 | |
1444 | return wcd_mbhc_initialise(mbhc); |
1445 | } |
1446 | EXPORT_SYMBOL(wcd_mbhc_start); |
1447 | |
1448 | void wcd_mbhc_stop(struct wcd_mbhc *mbhc) |
1449 | { |
1450 | mbhc->current_plug = MBHC_PLUG_TYPE_NONE; |
1451 | mbhc->hph_status = 0; |
1452 | disable_irq_nosync(irq: mbhc->intr_ids->hph_left_ocp); |
1453 | disable_irq_nosync(irq: mbhc->intr_ids->hph_right_ocp); |
1454 | } |
1455 | EXPORT_SYMBOL(wcd_mbhc_stop); |
1456 | |
1457 | int wcd_dt_parse_mbhc_data(struct device *dev, struct wcd_mbhc_config *cfg) |
1458 | { |
1459 | struct device_node *np = dev->of_node; |
1460 | int ret, i, microvolt; |
1461 | |
1462 | if (of_property_read_bool(np, propname: "qcom,hphl-jack-type-normally-closed" )) |
1463 | cfg->hphl_swh = false; |
1464 | else |
1465 | cfg->hphl_swh = true; |
1466 | |
1467 | if (of_property_read_bool(np, propname: "qcom,ground-jack-type-normally-closed" )) |
1468 | cfg->gnd_swh = false; |
1469 | else |
1470 | cfg->gnd_swh = true; |
1471 | |
1472 | ret = of_property_read_u32(np, propname: "qcom,mbhc-headset-vthreshold-microvolt" , |
1473 | out_value: µvolt); |
1474 | if (ret) |
1475 | dev_dbg(dev, "missing qcom,mbhc-hs-mic-max-vthreshold--microvolt in dt node\n" ); |
1476 | else |
1477 | cfg->hs_thr = microvolt/1000; |
1478 | |
1479 | ret = of_property_read_u32(np, propname: "qcom,mbhc-headphone-vthreshold-microvolt" , |
1480 | out_value: µvolt); |
1481 | if (ret) |
1482 | dev_dbg(dev, "missing qcom,mbhc-hs-mic-min-vthreshold-microvolt entry\n" ); |
1483 | else |
1484 | cfg->hph_thr = microvolt/1000; |
1485 | |
1486 | ret = of_property_read_u32_array(np, |
1487 | propname: "qcom,mbhc-buttons-vthreshold-microvolt" , |
1488 | out_values: &cfg->btn_high[0], |
1489 | WCD_MBHC_DEF_BUTTONS); |
1490 | if (ret) |
1491 | dev_err(dev, "missing qcom,mbhc-buttons-vthreshold-microvolt entry\n" ); |
1492 | |
1493 | for (i = 0; i < WCD_MBHC_DEF_BUTTONS; i++) { |
1494 | if (ret) /* default voltage */ |
1495 | cfg->btn_high[i] = 500000; |
1496 | else |
1497 | /* Micro to Milli Volts */ |
1498 | cfg->btn_high[i] = cfg->btn_high[i]/1000; |
1499 | } |
1500 | |
1501 | return 0; |
1502 | } |
1503 | EXPORT_SYMBOL(wcd_dt_parse_mbhc_data); |
1504 | |
1505 | struct wcd_mbhc *wcd_mbhc_init(struct snd_soc_component *component, |
1506 | const struct wcd_mbhc_cb *mbhc_cb, |
1507 | const struct wcd_mbhc_intr *intr_ids, |
1508 | struct wcd_mbhc_field *fields, |
1509 | bool impedance_det_en) |
1510 | { |
1511 | struct device *dev = component->dev; |
1512 | struct wcd_mbhc *mbhc; |
1513 | int ret; |
1514 | |
1515 | if (!intr_ids || !fields || !mbhc_cb || !mbhc_cb->mbhc_bias || !mbhc_cb->set_btn_thr) { |
1516 | dev_err(dev, "%s: Insufficient mbhc configuration\n" , __func__); |
1517 | return ERR_PTR(error: -EINVAL); |
1518 | } |
1519 | |
1520 | mbhc = kzalloc(size: sizeof(*mbhc), GFP_KERNEL); |
1521 | if (!mbhc) |
1522 | return ERR_PTR(error: -ENOMEM); |
1523 | |
1524 | mbhc->component = component; |
1525 | mbhc->dev = dev; |
1526 | mbhc->intr_ids = intr_ids; |
1527 | mbhc->mbhc_cb = mbhc_cb; |
1528 | mbhc->fields = fields; |
1529 | mbhc->mbhc_detection_logic = WCD_DETECTION_ADC; |
1530 | |
1531 | if (mbhc_cb->compute_impedance) |
1532 | mbhc->impedance_detect = impedance_det_en; |
1533 | |
1534 | INIT_DELAYED_WORK(&mbhc->mbhc_btn_dwork, wcd_btn_long_press_fn); |
1535 | |
1536 | mutex_init(&mbhc->lock); |
1537 | |
1538 | INIT_WORK(&mbhc->correct_plug_swch, wcd_correct_swch_plug); |
1539 | INIT_WORK(&mbhc->mbhc_plug_detect_work, mbhc_plug_detect_fn); |
1540 | |
1541 | ret = request_threaded_irq(irq: mbhc->intr_ids->mbhc_sw_intr, NULL, |
1542 | thread_fn: wcd_mbhc_mech_plug_detect_irq, |
1543 | IRQF_ONESHOT | IRQF_TRIGGER_RISING, |
1544 | name: "mbhc sw intr" , dev: mbhc); |
1545 | if (ret) |
1546 | goto err_free_mbhc; |
1547 | |
1548 | ret = request_threaded_irq(irq: mbhc->intr_ids->mbhc_btn_press_intr, NULL, |
1549 | thread_fn: wcd_mbhc_btn_press_handler, |
1550 | IRQF_ONESHOT | IRQF_TRIGGER_RISING, |
1551 | name: "Button Press detect" , dev: mbhc); |
1552 | if (ret) |
1553 | goto err_free_sw_intr; |
1554 | |
1555 | ret = request_threaded_irq(irq: mbhc->intr_ids->mbhc_btn_release_intr, NULL, |
1556 | thread_fn: wcd_mbhc_btn_release_handler, |
1557 | IRQF_ONESHOT | IRQF_TRIGGER_RISING, |
1558 | name: "Button Release detect" , dev: mbhc); |
1559 | if (ret) |
1560 | goto err_free_btn_press_intr; |
1561 | |
1562 | ret = request_threaded_irq(irq: mbhc->intr_ids->mbhc_hs_ins_intr, NULL, |
1563 | thread_fn: wcd_mbhc_adc_hs_ins_irq, |
1564 | IRQF_ONESHOT | IRQF_TRIGGER_RISING, |
1565 | name: "Elect Insert" , dev: mbhc); |
1566 | if (ret) |
1567 | goto err_free_btn_release_intr; |
1568 | |
1569 | disable_irq_nosync(irq: mbhc->intr_ids->mbhc_hs_ins_intr); |
1570 | |
1571 | ret = request_threaded_irq(irq: mbhc->intr_ids->mbhc_hs_rem_intr, NULL, |
1572 | thread_fn: wcd_mbhc_adc_hs_rem_irq, |
1573 | IRQF_ONESHOT | IRQF_TRIGGER_RISING, |
1574 | name: "Elect Remove" , dev: mbhc); |
1575 | if (ret) |
1576 | goto err_free_hs_ins_intr; |
1577 | |
1578 | disable_irq_nosync(irq: mbhc->intr_ids->mbhc_hs_rem_intr); |
1579 | |
1580 | ret = request_threaded_irq(irq: mbhc->intr_ids->hph_left_ocp, NULL, |
1581 | thread_fn: wcd_mbhc_hphl_ocp_irq, |
1582 | IRQF_ONESHOT | IRQF_TRIGGER_RISING, |
1583 | name: "HPH_L OCP detect" , dev: mbhc); |
1584 | if (ret) |
1585 | goto err_free_hs_rem_intr; |
1586 | |
1587 | ret = request_threaded_irq(irq: mbhc->intr_ids->hph_right_ocp, NULL, |
1588 | thread_fn: wcd_mbhc_hphr_ocp_irq, |
1589 | IRQF_ONESHOT | IRQF_TRIGGER_RISING, |
1590 | name: "HPH_R OCP detect" , dev: mbhc); |
1591 | if (ret) |
1592 | goto err_free_hph_left_ocp; |
1593 | |
1594 | return mbhc; |
1595 | |
1596 | err_free_hph_left_ocp: |
1597 | free_irq(mbhc->intr_ids->hph_left_ocp, mbhc); |
1598 | err_free_hs_rem_intr: |
1599 | free_irq(mbhc->intr_ids->mbhc_hs_rem_intr, mbhc); |
1600 | err_free_hs_ins_intr: |
1601 | free_irq(mbhc->intr_ids->mbhc_hs_ins_intr, mbhc); |
1602 | err_free_btn_release_intr: |
1603 | free_irq(mbhc->intr_ids->mbhc_btn_release_intr, mbhc); |
1604 | err_free_btn_press_intr: |
1605 | free_irq(mbhc->intr_ids->mbhc_btn_press_intr, mbhc); |
1606 | err_free_sw_intr: |
1607 | free_irq(mbhc->intr_ids->mbhc_sw_intr, mbhc); |
1608 | err_free_mbhc: |
1609 | kfree(objp: mbhc); |
1610 | |
1611 | dev_err(dev, "Failed to request mbhc interrupts %d\n" , ret); |
1612 | |
1613 | return ERR_PTR(error: ret); |
1614 | } |
1615 | EXPORT_SYMBOL(wcd_mbhc_init); |
1616 | |
1617 | void wcd_mbhc_deinit(struct wcd_mbhc *mbhc) |
1618 | { |
1619 | free_irq(mbhc->intr_ids->hph_right_ocp, mbhc); |
1620 | free_irq(mbhc->intr_ids->hph_left_ocp, mbhc); |
1621 | free_irq(mbhc->intr_ids->mbhc_hs_rem_intr, mbhc); |
1622 | free_irq(mbhc->intr_ids->mbhc_hs_ins_intr, mbhc); |
1623 | free_irq(mbhc->intr_ids->mbhc_btn_release_intr, mbhc); |
1624 | free_irq(mbhc->intr_ids->mbhc_btn_press_intr, mbhc); |
1625 | free_irq(mbhc->intr_ids->mbhc_sw_intr, mbhc); |
1626 | |
1627 | mutex_lock(&mbhc->lock); |
1628 | wcd_cancel_hs_detect_plug(mbhc, work: &mbhc->correct_plug_swch); |
1629 | cancel_work_sync(work: &mbhc->mbhc_plug_detect_work); |
1630 | mutex_unlock(lock: &mbhc->lock); |
1631 | |
1632 | kfree(objp: mbhc); |
1633 | } |
1634 | EXPORT_SYMBOL(wcd_mbhc_deinit); |
1635 | |
1636 | static int __init mbhc_init(void) |
1637 | { |
1638 | return 0; |
1639 | } |
1640 | |
1641 | static void __exit mbhc_exit(void) |
1642 | { |
1643 | } |
1644 | |
1645 | module_init(mbhc_init); |
1646 | module_exit(mbhc_exit); |
1647 | |
1648 | MODULE_DESCRIPTION("wcd MBHC v2 module" ); |
1649 | MODULE_LICENSE("GPL" ); |
1650 | |