--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright (c) 2015-2021, The Linux Foundation. All rights reserved.
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+#include <linux/printk.h>
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+#include "wcd-mbhc-v2.h"
+
+#define HS_DETECT_PLUG_TIME_MS (3 * 1000)
+#define MBHC_BUTTON_PRESS_THRESHOLD_MIN 250
+#define GND_MIC_SWAP_THRESHOLD 4
+#define WCD_FAKE_REMOVAL_MIN_PERIOD_MS 100
+#define HPHL_CROSS_CONN_THRESHOLD 100
+#define HS_VREF_MIN_VAL 1400
+#define FAKE_REM_RETRY_ATTEMPTS 3
+#define WCD_MBHC_ADC_HS_THRESHOLD_MV 1700
+#define WCD_MBHC_ADC_HPH_THRESHOLD_MV 75
+#define WCD_MBHC_ADC_MICBIAS_MV 1800
+#define WCD_MBHC_FAKE_INS_RETRY 4
+
+#define WCD_MBHC_JACK_MASK (SND_JACK_HEADSET | SND_JACK_LINEOUT | \
+ SND_JACK_MECHANICAL)
+
+#define WCD_MBHC_JACK_BUTTON_MASK (SND_JACK_BTN_0 | SND_JACK_BTN_1 | \
+ SND_JACK_BTN_2 | SND_JACK_BTN_3 | \
+ SND_JACK_BTN_4 | SND_JACK_BTN_5)
+
+enum wcd_mbhc_adc_mux_ctl {
+ MUX_CTL_AUTO = 0,
+ MUX_CTL_IN2P,
+ MUX_CTL_IN3P,
+ MUX_CTL_IN4P,
+ MUX_CTL_HPH_L,
+ MUX_CTL_HPH_R,
+ MUX_CTL_NONE,
+};
+
+struct wcd_mbhc {
+ struct device *dev;
+ struct snd_soc_component *component;
+ struct snd_soc_jack *jack;
+ struct wcd_mbhc_config *cfg;
+ const struct wcd_mbhc_cb *mbhc_cb;
+ const struct wcd_mbhc_intr *intr_ids;
+ struct wcd_mbhc_field *fields;
+ /* Delayed work to report long button press */
+ struct delayed_work mbhc_btn_dwork;
+ /* Work to correct accessory type */
+ struct work_struct correct_plug_swch;
+ struct mutex lock;
+ int buttons_pressed;
+ u32 hph_status; /* track headhpone status */
+ u8 current_plug;
+ bool is_btn_press;
+ bool in_swch_irq_handler;
+ bool hs_detect_work_stop;
+ bool is_hs_recording;
+ bool extn_cable_hph_rem;
+ bool force_linein;
+ bool impedance_detect;
+ unsigned long event_state;
+ unsigned long jiffies_atreport;
+ /* impedance of hphl and hphr */
+ uint32_t zl, zr;
+ /* Holds type of Headset - Mono/Stereo */
+ enum wcd_mbhc_hph_type hph_type;
+ /* Holds mbhc detection method - ADC/Legacy */
+ int mbhc_detection_logic;
+};
+
+static inline int wcd_mbhc_write_field(const struct wcd_mbhc *mbhc,
+ int field, int val)
+{
+ if (!mbhc->fields[field].reg)
+ return 0;
+
+ return snd_soc_component_write_field(mbhc->component,
+ mbhc->fields[field].reg,
+ mbhc->fields[field].mask, val);
+}
+
+static inline int wcd_mbhc_read_field(const struct wcd_mbhc *mbhc, int field)
+{
+ if (!mbhc->fields[field].reg)
+ return 0;
+
+ return snd_soc_component_read_field(mbhc->component,
+ mbhc->fields[field].reg,
+ mbhc->fields[field].mask);
+}
+
+static void wcd_program_hs_vref(struct wcd_mbhc *mbhc)
+{
+ u32 reg_val = ((mbhc->cfg->v_hs_max - HS_VREF_MIN_VAL) / 100);
+
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_HS_VREF, reg_val);
+}
+
+static void wcd_program_btn_threshold(const struct wcd_mbhc *mbhc, bool micbias)
+{
+ struct snd_soc_component *component = mbhc->component;
+
+ mbhc->mbhc_cb->set_btn_thr(component, mbhc->cfg->btn_low,
+ mbhc->cfg->btn_high,
+ mbhc->cfg->num_btn, micbias);
+}
+
+static void wcd_mbhc_curr_micbias_control(const struct wcd_mbhc *mbhc,
+ const enum wcd_mbhc_cs_mb_en_flag cs_mb_en)
+{
+
+ /*
+ * Some codecs handle micbias/pullup enablement in codec
+ * drivers itself and micbias is not needed for regular
+ * plug type detection. So if micbias_control callback function
+ * is defined, just return.
+ */
+ if (mbhc->mbhc_cb->mbhc_micbias_control)
+ return;
+
+ switch (cs_mb_en) {
+ case WCD_MBHC_EN_CS:
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_MICB_CTRL, 0);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_BTN_ISRC_CTL, 3);
+ /* Program Button threshold registers as per CS */
+ wcd_program_btn_threshold(mbhc, false);
+ break;
+ case WCD_MBHC_EN_MB:
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_BTN_ISRC_CTL, 0);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_FSM_EN, 1);
+ /* Disable PULL_UP_EN & enable MICBIAS */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_MICB_CTRL, 2);
+ /* Program Button threshold registers as per MICBIAS */
+ wcd_program_btn_threshold(mbhc, true);
+ break;
+ case WCD_MBHC_EN_PULLUP:
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_BTN_ISRC_CTL, 3);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_FSM_EN, 1);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_MICB_CTRL, 1);
+ /* Program Button threshold registers as per MICBIAS */
+ wcd_program_btn_threshold(mbhc, true);
+ break;
+ case WCD_MBHC_EN_NONE:
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_BTN_ISRC_CTL, 0);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_FSM_EN, 1);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_MICB_CTRL, 0);
+ break;
+ default:
+ dev_err(mbhc->dev, "%s: Invalid parameter", __func__);
+ break;
+ }
+}
+
+int wcd_mbhc_event_notify(struct wcd_mbhc *mbhc, unsigned long event)
+{
+
+ struct snd_soc_component *component;
+ bool micbias2 = false;
+
+ if (!mbhc)
+ return 0;
+
+ component = mbhc->component;
+
+ if (mbhc->mbhc_cb->micbias_enable_status)
+ micbias2 = mbhc->mbhc_cb->micbias_enable_status(component, MIC_BIAS_2);
+
+ switch (event) {
+ /* MICBIAS usage change */
+ case WCD_EVENT_POST_DAPM_MICBIAS_2_ON:
+ mbhc->is_hs_recording = true;
+ break;
+ case WCD_EVENT_POST_MICBIAS_2_ON:
+ /* Disable current source if micbias2 enabled */
+ if (mbhc->mbhc_cb->mbhc_micbias_control) {
+ if (wcd_mbhc_read_field(mbhc, WCD_MBHC_FSM_EN))
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_BTN_ISRC_CTL, 0);
+ } else {
+ mbhc->is_hs_recording = true;
+ wcd_mbhc_curr_micbias_control(mbhc, WCD_MBHC_EN_MB);
+ }
+ break;
+ case WCD_EVENT_PRE_MICBIAS_2_OFF:
+ /*
+ * Before MICBIAS_2 is turned off, if FSM is enabled,
+ * make sure current source is enabled so as to detect
+ * button press/release events
+ */
+ if (mbhc->mbhc_cb->mbhc_micbias_control/* && !mbhc->micbias_enable*/) {
+ if (wcd_mbhc_read_field(mbhc, WCD_MBHC_FSM_EN))
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_BTN_ISRC_CTL, 3);
+ }
+ break;
+ /* MICBIAS usage change */
+ case WCD_EVENT_POST_DAPM_MICBIAS_2_OFF:
+ mbhc->is_hs_recording = false;
+ break;
+ case WCD_EVENT_POST_MICBIAS_2_OFF:
+ if (!mbhc->mbhc_cb->mbhc_micbias_control)
+ mbhc->is_hs_recording = false;
+
+ /* Enable PULL UP if PA's are enabled */
+ if ((test_bit(WCD_MBHC_EVENT_PA_HPHL, &mbhc->event_state)) ||
+ (test_bit(WCD_MBHC_EVENT_PA_HPHR, &mbhc->event_state)))
+ /* enable pullup and cs, disable mb */
+ wcd_mbhc_curr_micbias_control(mbhc, WCD_MBHC_EN_PULLUP);
+ else
+ /* enable current source and disable mb, pullup*/
+ wcd_mbhc_curr_micbias_control(mbhc, WCD_MBHC_EN_CS);
+
+ break;
+ case WCD_EVENT_POST_HPHL_PA_OFF:
+ clear_bit(WCD_MBHC_EVENT_PA_HPHL, &mbhc->event_state);
+
+ /* check if micbias is enabled */
+ if (micbias2)
+ /* Disable cs, pullup & enable micbias */
+ wcd_mbhc_curr_micbias_control(mbhc, WCD_MBHC_EN_MB);
+ else
+ /* Disable micbias, pullup & enable cs */
+ wcd_mbhc_curr_micbias_control(mbhc, WCD_MBHC_EN_CS);
+ break;
+ case WCD_EVENT_POST_HPHR_PA_OFF:
+ clear_bit(WCD_MBHC_EVENT_PA_HPHR, &mbhc->event_state);
+ /* check if micbias is enabled */
+ if (micbias2)
+ /* Disable cs, pullup & enable micbias */
+ wcd_mbhc_curr_micbias_control(mbhc, WCD_MBHC_EN_MB);
+ else
+ /* Disable micbias, pullup & enable cs */
+ wcd_mbhc_curr_micbias_control(mbhc, WCD_MBHC_EN_CS);
+ break;
+ case WCD_EVENT_PRE_HPHL_PA_ON:
+ set_bit(WCD_MBHC_EVENT_PA_HPHL, &mbhc->event_state);
+ /* check if micbias is enabled */
+ if (micbias2)
+ /* Disable cs, pullup & enable micbias */
+ wcd_mbhc_curr_micbias_control(mbhc, WCD_MBHC_EN_MB);
+ else
+ /* Disable micbias, enable pullup & cs */
+ wcd_mbhc_curr_micbias_control(mbhc, WCD_MBHC_EN_PULLUP);
+ break;
+ case WCD_EVENT_PRE_HPHR_PA_ON:
+ set_bit(WCD_MBHC_EVENT_PA_HPHR, &mbhc->event_state);
+ /* check if micbias is enabled */
+ if (micbias2)
+ /* Disable cs, pullup & enable micbias */
+ wcd_mbhc_curr_micbias_control(mbhc, WCD_MBHC_EN_MB);
+ else
+ /* Disable micbias, enable pullup & cs */
+ wcd_mbhc_curr_micbias_control(mbhc, WCD_MBHC_EN_PULLUP);
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(wcd_mbhc_event_notify);
+
+static int wcd_cancel_btn_work(struct wcd_mbhc *mbhc)
+{
+ return cancel_delayed_work_sync(&mbhc->mbhc_btn_dwork);
+}
+
+static void wcd_micbias_disable(struct wcd_mbhc *mbhc)
+{
+ struct snd_soc_component *component = mbhc->component;
+
+ if (mbhc->mbhc_cb->mbhc_micbias_control)
+ mbhc->mbhc_cb->mbhc_micbias_control(component, MIC_BIAS_2, MICB_DISABLE);
+
+ if (mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic)
+ mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic(component, MIC_BIAS_2, false);
+
+ if (mbhc->mbhc_cb->set_micbias_value) {
+ mbhc->mbhc_cb->set_micbias_value(component);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_MICB_CTRL, 0);
+ }
+}
+
+static void wcd_mbhc_report_plug_removal(struct wcd_mbhc *mbhc,
+ enum snd_jack_types jack_type)
+{
+ mbhc->hph_status &= ~jack_type;
+ /*
+ * cancel possibly scheduled btn work and
+ * report release if we reported button press
+ */
+ if (!wcd_cancel_btn_work(mbhc) && mbhc->buttons_pressed) {
+ snd_soc_jack_report(mbhc->jack, 0, mbhc->buttons_pressed);
+ mbhc->buttons_pressed &= ~WCD_MBHC_JACK_BUTTON_MASK;
+ }
+
+ wcd_micbias_disable(mbhc);
+ mbhc->hph_type = WCD_MBHC_HPH_NONE;
+ mbhc->zl = mbhc->zr = 0;
+ snd_soc_jack_report(mbhc->jack, mbhc->hph_status, WCD_MBHC_JACK_MASK);
+ mbhc->current_plug = MBHC_PLUG_TYPE_NONE;
+ mbhc->force_linein = false;
+}
+
+static void wcd_mbhc_compute_impedance(struct wcd_mbhc *mbhc)
+{
+
+ if (!mbhc->impedance_detect)
+ return;
+
+ if (mbhc->cfg->linein_th != 0) {
+ u8 fsm_en = wcd_mbhc_read_field(mbhc, WCD_MBHC_FSM_EN);
+ /* Set MUX_CTL to AUTO for Z-det */
+
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_FSM_EN, 0);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_MUX_CTL, MUX_CTL_AUTO);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_FSM_EN, 1);
+ mbhc->mbhc_cb->compute_impedance(mbhc->component, &mbhc->zl, &mbhc->zr);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_FSM_EN, fsm_en);
+ }
+}
+
+static void wcd_mbhc_report_plug_insertion(struct wcd_mbhc *mbhc,
+ enum snd_jack_types jack_type)
+{
+ bool is_pa_on;
+ /*
+ * Report removal of current jack type.
+ * Headphone to headset shouldn't report headphone
+ * removal.
+ */
+ if (mbhc->current_plug == MBHC_PLUG_TYPE_HEADSET &&
+ jack_type == SND_JACK_HEADPHONE)
+ mbhc->hph_status &= ~SND_JACK_HEADSET;
+
+ /* Report insertion */
+ switch (jack_type) {
+ case SND_JACK_HEADPHONE:
+ mbhc->current_plug = MBHC_PLUG_TYPE_HEADPHONE;
+ break;
+ case SND_JACK_HEADSET:
+ mbhc->current_plug = MBHC_PLUG_TYPE_HEADSET;
+ mbhc->jiffies_atreport = jiffies;
+ break;
+ case SND_JACK_LINEOUT:
+ mbhc->current_plug = MBHC_PLUG_TYPE_HIGH_HPH;
+ break;
+ default:
+ break;
+ }
+
+
+ is_pa_on = wcd_mbhc_read_field(mbhc, WCD_MBHC_HPH_PA_EN);
+
+ if (!is_pa_on) {
+ wcd_mbhc_compute_impedance(mbhc);
+ if ((mbhc->zl > mbhc->cfg->linein_th) &&
+ (mbhc->zr > mbhc->cfg->linein_th) &&
+ (jack_type == SND_JACK_HEADPHONE)) {
+ jack_type = SND_JACK_LINEOUT;
+ mbhc->force_linein = true;
+ mbhc->current_plug = MBHC_PLUG_TYPE_HIGH_HPH;
+ if (mbhc->hph_status) {
+ mbhc->hph_status &= ~(SND_JACK_HEADSET |
+ SND_JACK_LINEOUT);
+ snd_soc_jack_report(mbhc->jack, mbhc->hph_status,
+ WCD_MBHC_JACK_MASK);
+ }
+ }
+ }
+
+ /* Do not calculate impedance again for lineout
+ * as during playback pa is on and impedance values
+ * will not be correct resulting in lineout detected
+ * as headphone.
+ */
+ if (is_pa_on && mbhc->force_linein) {
+ jack_type = SND_JACK_LINEOUT;
+ mbhc->current_plug = MBHC_PLUG_TYPE_HIGH_HPH;
+ if (mbhc->hph_status) {
+ mbhc->hph_status &= ~(SND_JACK_HEADSET |
+ SND_JACK_LINEOUT);
+ snd_soc_jack_report(mbhc->jack, mbhc->hph_status,
+ WCD_MBHC_JACK_MASK);
+ }
+ }
+
+ mbhc->hph_status |= jack_type;
+
+ if (jack_type == SND_JACK_HEADPHONE && mbhc->mbhc_cb->mbhc_micb_ramp_control)
+ mbhc->mbhc_cb->mbhc_micb_ramp_control(mbhc->component, false);
+
+ snd_soc_jack_report(mbhc->jack, (mbhc->hph_status | SND_JACK_MECHANICAL),
+ WCD_MBHC_JACK_MASK);
+}
+
+static void wcd_mbhc_report_plug(struct wcd_mbhc *mbhc, int insertion,
+ enum snd_jack_types jack_type)
+{
+
+ WARN_ON(!mutex_is_locked(&mbhc->lock));
+
+ if (!insertion) /* Report removal */
+ wcd_mbhc_report_plug_removal(mbhc, jack_type);
+ else
+ wcd_mbhc_report_plug_insertion(mbhc, jack_type);
+
+}
+
+static void wcd_cancel_hs_detect_plug(struct wcd_mbhc *mbhc,
+ struct work_struct *work)
+{
+ mbhc->hs_detect_work_stop = true;
+ mutex_unlock(&mbhc->lock);
+ cancel_work_sync(work);
+ mutex_lock(&mbhc->lock);
+}
+
+static void wcd_mbhc_cancel_pending_work(struct wcd_mbhc *mbhc)
+{
+ /* cancel pending button press */
+ wcd_cancel_btn_work(mbhc);
+ /* cancel correct work function */
+ wcd_cancel_hs_detect_plug(mbhc, &mbhc->correct_plug_swch);
+}
+
+static void wcd_mbhc_elec_hs_report_unplug(struct wcd_mbhc *mbhc)
+{
+ wcd_mbhc_cancel_pending_work(mbhc);
+ /* Report extension cable */
+ wcd_mbhc_report_plug(mbhc, 1, SND_JACK_LINEOUT);
+ /*
+ * Disable HPHL trigger and MIC Schmitt triggers.
+ * Setup for insertion detection.
+ */
+ disable_irq_nosync(mbhc->intr_ids->mbhc_hs_rem_intr);
+ wcd_mbhc_curr_micbias_control(mbhc, WCD_MBHC_EN_NONE);
+ /* Disable HW FSM */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_FSM_EN, 0);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ELECT_SCHMT_ISRC, 3);
+
+ /* Set the detection type appropriately */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ELECT_DETECTION_TYPE, 1);
+ enable_irq(mbhc->intr_ids->mbhc_hs_ins_intr);
+}
+
+static void wcd_mbhc_find_plug_and_report(struct wcd_mbhc *mbhc,
+ enum wcd_mbhc_plug_type plug_type)
+{
+ if (mbhc->current_plug == plug_type)
+ return;
+
+ mutex_lock(&mbhc->lock);
+
+ switch (plug_type) {
+ case MBHC_PLUG_TYPE_HEADPHONE:
+ wcd_mbhc_report_plug(mbhc, 1, SND_JACK_HEADPHONE);
+ break;
+ case MBHC_PLUG_TYPE_HEADSET:
+ wcd_mbhc_report_plug(mbhc, 1, SND_JACK_HEADSET);
+ break;
+ case MBHC_PLUG_TYPE_HIGH_HPH:
+ wcd_mbhc_report_plug(mbhc, 1, SND_JACK_LINEOUT);
+ break;
+ case MBHC_PLUG_TYPE_GND_MIC_SWAP:
+ if (mbhc->current_plug == MBHC_PLUG_TYPE_HEADPHONE)
+ wcd_mbhc_report_plug(mbhc, 0, SND_JACK_HEADPHONE);
+ if (mbhc->current_plug == MBHC_PLUG_TYPE_HEADSET)
+ wcd_mbhc_report_plug(mbhc, 0, SND_JACK_HEADSET);
+ break;
+ default:
+ WARN(1, "Unexpected current plug_type %d, plug_type %d\n",
+ mbhc->current_plug, plug_type);
+ break;
+ }
+ mutex_unlock(&mbhc->lock);
+}
+
+static void wcd_schedule_hs_detect_plug(struct wcd_mbhc *mbhc,
+ struct work_struct *work)
+{
+ WARN_ON(!mutex_is_locked(&mbhc->lock));
+ mbhc->hs_detect_work_stop = false;
+ schedule_work(work);
+}
+
+static void wcd_mbhc_adc_detect_plug_type(struct wcd_mbhc *mbhc)
+{
+ struct snd_soc_component *component = mbhc->component;
+
+ WARN_ON(!mutex_is_locked(&mbhc->lock));
+
+ if (mbhc->mbhc_cb->hph_pull_down_ctrl)
+ mbhc->mbhc_cb->hph_pull_down_ctrl(component, false);
+
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_DETECTION_DONE, 0);
+
+ if (mbhc->mbhc_cb->mbhc_micbias_control) {
+ mbhc->mbhc_cb->mbhc_micbias_control(component, MIC_BIAS_2,
+ MICB_ENABLE);
+ wcd_schedule_hs_detect_plug(mbhc, &mbhc->correct_plug_swch);
+ }
+}
+
+static irqreturn_t wcd_mbhc_mech_plug_detect_irq(int irq, void *data)
+{
+ struct snd_soc_component *component;
+ enum snd_jack_types jack_type;
+ struct wcd_mbhc *mbhc = data;
+ bool detection_type;
+
+ component = mbhc->component;
+ mutex_lock(&mbhc->lock);
+
+ mbhc->in_swch_irq_handler = true;
+
+ wcd_mbhc_cancel_pending_work(mbhc);
+
+ detection_type = wcd_mbhc_read_field(mbhc, WCD_MBHC_MECH_DETECTION_TYPE);
+
+ /* Set the detection type appropriately */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_MECH_DETECTION_TYPE, !detection_type);
+
+ /* Enable micbias ramp */
+ if (mbhc->mbhc_cb->mbhc_micb_ramp_control)
+ mbhc->mbhc_cb->mbhc_micb_ramp_control(component, true);
+
+ if (detection_type) {
+ if (mbhc->current_plug != MBHC_PLUG_TYPE_NONE)
+ goto exit;
+ /* Make sure MASTER_BIAS_CTL is enabled */
+ mbhc->mbhc_cb->mbhc_bias(component, true);
+ mbhc->is_btn_press = false;
+ wcd_mbhc_adc_detect_plug_type(mbhc);
+ } else {
+ /* Disable HW FSM */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_FSM_EN, 0);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_BTN_ISRC_CTL, 0);
+ mbhc->extn_cable_hph_rem = false;
+
+ if (mbhc->current_plug == MBHC_PLUG_TYPE_NONE)
+ goto exit;
+
+ mbhc->is_btn_press = false;
+ switch (mbhc->current_plug) {
+ case MBHC_PLUG_TYPE_HEADPHONE:
+ jack_type = SND_JACK_HEADPHONE;
+ break;
+ case MBHC_PLUG_TYPE_HEADSET:
+ jack_type = SND_JACK_HEADSET;
+ break;
+ case MBHC_PLUG_TYPE_HIGH_HPH:
+ if (mbhc->mbhc_detection_logic == WCD_DETECTION_ADC)
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ELECT_ISRC_EN, 0);
+ jack_type = SND_JACK_LINEOUT;
+ break;
+ case MBHC_PLUG_TYPE_GND_MIC_SWAP:
+ dev_err(mbhc->dev, "Ground and Mic Swapped on plug\n");
+ goto exit;
+ default:
+ dev_err(mbhc->dev, "Invalid current plug: %d\n",
+ mbhc->current_plug);
+ goto exit;
+ }
+ disable_irq_nosync(mbhc->intr_ids->mbhc_hs_rem_intr);
+ disable_irq_nosync(mbhc->intr_ids->mbhc_hs_ins_intr);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ELECT_DETECTION_TYPE, 1);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ELECT_SCHMT_ISRC, 0);
+ wcd_mbhc_report_plug(mbhc, 0, jack_type);
+ }
+
+exit:
+ mbhc->in_swch_irq_handler = false;
+ mutex_unlock(&mbhc->lock);
+ return IRQ_HANDLED;
+}
+
+static int wcd_mbhc_get_button_mask(struct wcd_mbhc *mbhc)
+{
+ int mask = 0;
+ int btn;
+
+ btn = wcd_mbhc_read_field(mbhc, WCD_MBHC_BTN_RESULT);
+
+ switch (btn) {
+ case 0:
+ mask = SND_JACK_BTN_0;
+ break;
+ case 1:
+ mask = SND_JACK_BTN_1;
+ break;
+ case 2:
+ mask = SND_JACK_BTN_2;
+ break;
+ case 3:
+ mask = SND_JACK_BTN_3;
+ break;
+ case 4:
+ mask = SND_JACK_BTN_4;
+ break;
+ case 5:
+ mask = SND_JACK_BTN_5;
+ break;
+ default:
+ break;
+ }
+
+ return mask;
+}
+
+static void wcd_btn_long_press_fn(struct work_struct *work)
+{
+ struct delayed_work *dwork = to_delayed_work(work);
+ struct wcd_mbhc *mbhc = container_of(dwork, struct wcd_mbhc, mbhc_btn_dwork);
+
+ if (mbhc->current_plug == MBHC_PLUG_TYPE_HEADSET)
+ snd_soc_jack_report(mbhc->jack, mbhc->buttons_pressed,
+ mbhc->buttons_pressed);
+}
+
+static irqreturn_t wcd_mbhc_btn_press_handler(int irq, void *data)
+{
+ struct wcd_mbhc *mbhc = data;
+ int mask;
+ unsigned long msec_val;
+
+ mutex_lock(&mbhc->lock);
+ wcd_cancel_btn_work(mbhc);
+ mbhc->is_btn_press = true;
+ msec_val = jiffies_to_msecs(jiffies - mbhc->jiffies_atreport);
+
+ /* Too short, ignore button press */
+ if (msec_val < MBHC_BUTTON_PRESS_THRESHOLD_MIN)
+ goto done;
+
+ /* If switch interrupt already kicked in, ignore button press */
+ if (mbhc->in_swch_irq_handler)
+ goto done;
+
+ /* Plug isn't headset, ignore button press */
+ if (mbhc->current_plug != MBHC_PLUG_TYPE_HEADSET)
+ goto done;
+
+ mask = wcd_mbhc_get_button_mask(mbhc);
+ mbhc->buttons_pressed |= mask;
+ if (schedule_delayed_work(&mbhc->mbhc_btn_dwork, msecs_to_jiffies(400)) == 0)
+ WARN(1, "Button pressed twice without release event\n");
+done:
+ mutex_unlock(&mbhc->lock);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t wcd_mbhc_btn_release_handler(int irq, void *data)
+{
+ struct wcd_mbhc *mbhc = data;
+ int ret;
+
+ mutex_lock(&mbhc->lock);
+ if (mbhc->is_btn_press)
+ mbhc->is_btn_press = false;
+ else /* fake btn press */
+ goto exit;
+
+ if (!(mbhc->buttons_pressed & WCD_MBHC_JACK_BUTTON_MASK))
+ goto exit;
+
+ ret = wcd_cancel_btn_work(mbhc);
+ if (ret == 0) { /* Reporting long button release event */
+ snd_soc_jack_report(mbhc->jack, 0, mbhc->buttons_pressed);
+ } else {
+ if (!mbhc->in_swch_irq_handler) {
+ /* Reporting btn press n Release */
+ snd_soc_jack_report(mbhc->jack, mbhc->buttons_pressed,
+ mbhc->buttons_pressed);
+ snd_soc_jack_report(mbhc->jack, 0, mbhc->buttons_pressed);
+ }
+ }
+ mbhc->buttons_pressed &= ~WCD_MBHC_JACK_BUTTON_MASK;
+exit:
+ mutex_unlock(&mbhc->lock);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t wcd_mbhc_hph_ocp_irq(struct wcd_mbhc *mbhc, bool hphr)
+{
+
+ /* TODO Find a better way to report this to Userspace */
+ dev_err(mbhc->dev, "MBHC Over Current on %s detected\n",
+ hphr ? "HPHR" : "HPHL");
+
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_OCP_FSM_EN, 0);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_OCP_FSM_EN, 1);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t wcd_mbhc_hphl_ocp_irq(int irq, void *data)
+{
+ return wcd_mbhc_hph_ocp_irq(data, false);
+}
+
+static irqreturn_t wcd_mbhc_hphr_ocp_irq(int irq, void *data)
+{
+ return wcd_mbhc_hph_ocp_irq(data, true);
+}
+
+static int wcd_mbhc_initialise(struct wcd_mbhc *mbhc)
+{
+ struct snd_soc_component *component = mbhc->component;
+
+ mutex_lock(&mbhc->lock);
+
+ /* enable HS detection */
+ if (mbhc->mbhc_cb->hph_pull_up_control_v2)
+ mbhc->mbhc_cb->hph_pull_up_control_v2(component,
+ HS_PULLUP_I_DEFAULT);
+ else if (mbhc->mbhc_cb->hph_pull_up_control)
+ mbhc->mbhc_cb->hph_pull_up_control(component, I_DEFAULT);
+ else
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_HS_L_DET_PULL_UP_CTRL, 3);
+
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_HPHL_PLUG_TYPE, mbhc->cfg->hphl_swh);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_GND_PLUG_TYPE, mbhc->cfg->gnd_swh);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_SW_HPH_LP_100K_TO_GND, 1);
+ if (mbhc->cfg->gnd_det_en && mbhc->mbhc_cb->mbhc_gnd_det_ctrl)
+ mbhc->mbhc_cb->mbhc_gnd_det_ctrl(component, true);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_HS_L_DET_PULL_UP_COMP_CTRL, 1);
+
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_L_DET_EN, 1);
+
+ /* Insertion debounce set to 96ms */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_INSREM_DBNC, 6);
+
+ /* Button Debounce set to 16ms */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_BTN_DBNC, 2);
+
+ /* enable bias */
+ mbhc->mbhc_cb->mbhc_bias(component, true);
+ /* enable MBHC clock */
+ if (mbhc->mbhc_cb->clk_setup)
+ mbhc->mbhc_cb->clk_setup(component, true);
+
+ /* program HS_VREF value */
+ wcd_program_hs_vref(mbhc);
+
+ wcd_program_btn_threshold(mbhc, false);
+
+ mutex_unlock(&mbhc->lock);
+
+ return 0;
+}
+
+static int wcd_mbhc_get_micbias(struct wcd_mbhc *mbhc)
+{
+ int micbias = 0;
+
+ if (mbhc->mbhc_cb->get_micbias_val) {
+ mbhc->mbhc_cb->get_micbias_val(mbhc->component, &micbias);
+ } else {
+ u8 vout_ctl = 0;
+ /* Read MBHC Micbias (Mic Bias2) voltage */
+ vout_ctl = wcd_mbhc_read_field(mbhc, WCD_MBHC_MICB2_VOUT);
+ /* Formula for getting micbias from vout
+ * micbias = 1.0V + VOUT_CTL * 50mV
+ */
+ micbias = 1000 + (vout_ctl * 50);
+ }
+ return micbias;
+}
+
+static int wcd_get_voltage_from_adc(u8 val, int micbias)
+{
+ /* Formula for calculating voltage from ADC
+ * Voltage = ADC_RESULT*12.5mV*V_MICBIAS/1.8
+ */
+ return ((val * 125 * micbias)/(WCD_MBHC_ADC_MICBIAS_MV * 10));
+}
+
+static int wcd_measure_adc_continuous(struct wcd_mbhc *mbhc)
+{
+ u8 adc_result;
+ int output_mv;
+ int retry = 3;
+ u8 adc_en;
+
+ /* Pre-requisites for ADC continuous measurement */
+ /* Read legacy electircal detection and disable */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ELECT_SCHMT_ISRC, 0x00);
+ /* Set ADC to continuous measurement */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ADC_MODE, 1);
+ /* Read ADC Enable bit to restore after adc measurement */
+ adc_en = wcd_mbhc_read_field(mbhc, WCD_MBHC_ADC_EN);
+ /* Disable ADC_ENABLE bit */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ADC_EN, 0);
+ /* Disable MBHC FSM */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_FSM_EN, 0);
+ /* Set the MUX selection to IN2P */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_MUX_CTL, MUX_CTL_IN2P);
+ /* Enable MBHC FSM */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_FSM_EN, 1);
+ /* Enable ADC_ENABLE bit */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ADC_EN, 1);
+
+ while (retry--) {
+ /* wait for 3 msec before reading ADC result */
+ usleep_range(3000, 3100);
+ adc_result = wcd_mbhc_read_field(mbhc, WCD_MBHC_ADC_RESULT);
+ }
+
+ /* Restore ADC Enable */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ADC_EN, adc_en);
+ /* Get voltage from ADC result */
+ output_mv = wcd_get_voltage_from_adc(adc_result, wcd_mbhc_get_micbias(mbhc));
+
+ return output_mv;
+}
+
+static int wcd_measure_adc_once(struct wcd_mbhc *mbhc, int mux_ctl)
+{
+ struct device *dev = mbhc->dev;
+ u8 adc_timeout = 0;
+ u8 adc_complete = 0;
+ u8 adc_result;
+ int retry = 6;
+ int ret;
+ int output_mv = 0;
+ u8 adc_en;
+
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ADC_MODE, 0);
+ /* Read ADC Enable bit to restore after adc measurement */
+ adc_en = wcd_mbhc_read_field(mbhc, WCD_MBHC_ADC_EN);
+ /* Trigger ADC one time measurement */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ADC_EN, 0);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_FSM_EN, 0);
+ /* Set the appropriate MUX selection */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_MUX_CTL, mux_ctl);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_FSM_EN, 1);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ADC_EN, 1);
+
+ while (retry--) {
+ /* wait for 600usec to get adc results */
+ usleep_range(600, 610);
+
+ /* check for ADC Timeout */
+ adc_timeout = wcd_mbhc_read_field(mbhc, WCD_MBHC_ADC_TIMEOUT);
+ if (adc_timeout)
+ continue;
+
+ /* Read ADC complete bit */
+ adc_complete = wcd_mbhc_read_field(mbhc, WCD_MBHC_ADC_COMPLETE);
+ if (!adc_complete)
+ continue;
+
+ /* Read ADC result */
+ adc_result = wcd_mbhc_read_field(mbhc, WCD_MBHC_ADC_RESULT);
+
+ /* Get voltage from ADC result */
+ output_mv = wcd_get_voltage_from_adc(adc_result,
+ wcd_mbhc_get_micbias(mbhc));
+ break;
+ }
+
+ /* Restore ADC Enable */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ADC_EN, adc_en);
+
+ if (retry <= 0) {
+ dev_err(dev, "%s: adc complete: %d, adc timeout: %d\n",
+ __func__, adc_complete, adc_timeout);
+ ret = -EINVAL;
+ } else {
+ ret = output_mv;
+ }
+
+ return ret;
+}
+
+/* To determine if cross connection occurred */
+static int wcd_check_cross_conn(struct wcd_mbhc *mbhc)
+{
+ u8 adc_mode, elect_ctl, adc_en, fsm_en;
+ int hphl_adc_res, hphr_adc_res;
+ bool is_cross_conn = false;
+
+ /* If PA is enabled, dont check for cross-connection */
+ if (wcd_mbhc_read_field(mbhc, WCD_MBHC_HPH_PA_EN))
+ return -EINVAL;
+
+ /* Read legacy electircal detection and disable */
+ elect_ctl = wcd_mbhc_read_field(mbhc, WCD_MBHC_ELECT_SCHMT_ISRC);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ELECT_SCHMT_ISRC, 0);
+
+ /* Read and set ADC to single measurement */
+ adc_mode = wcd_mbhc_read_field(mbhc, WCD_MBHC_ADC_MODE);
+ /* Read ADC Enable bit to restore after adc measurement */
+ adc_en = wcd_mbhc_read_field(mbhc, WCD_MBHC_ADC_EN);
+ /* Read FSM status */
+ fsm_en = wcd_mbhc_read_field(mbhc, WCD_MBHC_FSM_EN);
+
+ /* Get adc result for HPH L */
+ hphl_adc_res = wcd_measure_adc_once(mbhc, MUX_CTL_HPH_L);
+ if (hphl_adc_res < 0)
+ return hphl_adc_res;
+
+ /* Get adc result for HPH R in mV */
+ hphr_adc_res = wcd_measure_adc_once(mbhc, MUX_CTL_HPH_R);
+ if (hphr_adc_res < 0)
+ return hphr_adc_res;
+
+ if (hphl_adc_res > HPHL_CROSS_CONN_THRESHOLD ||
+ hphr_adc_res > HPHL_CROSS_CONN_THRESHOLD)
+ is_cross_conn = true;
+
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_FSM_EN, 0);
+ /* Set the MUX selection to Auto */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_MUX_CTL, MUX_CTL_AUTO);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_FSM_EN, 1);
+ /* Restore ADC Enable */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ADC_EN, adc_en);
+ /* Restore ADC mode */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ADC_MODE, adc_mode);
+ /* Restore FSM state */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_FSM_EN, fsm_en);
+ /* Restore electrical detection */
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ELECT_SCHMT_ISRC, elect_ctl);
+
+ return is_cross_conn;
+}
+
+static int wcd_mbhc_adc_get_hs_thres(struct wcd_mbhc *mbhc)
+{
+ int hs_threshold, micbias_mv;
+
+ micbias_mv = wcd_mbhc_get_micbias(mbhc);
+ if (mbhc->cfg->hs_thr) {
+ if (mbhc->cfg->micb_mv == micbias_mv)
+ hs_threshold = mbhc->cfg->hs_thr;
+ else
+ hs_threshold = (mbhc->cfg->hs_thr *
+ micbias_mv) / mbhc->cfg->micb_mv;
+ } else {
+ hs_threshold = ((WCD_MBHC_ADC_HS_THRESHOLD_MV *
+ micbias_mv) / WCD_MBHC_ADC_MICBIAS_MV);
+ }
+ return hs_threshold;
+}
+
+static int wcd_mbhc_adc_get_hph_thres(struct wcd_mbhc *mbhc)
+{
+ int hph_threshold, micbias_mv;
+
+ micbias_mv = wcd_mbhc_get_micbias(mbhc);
+ if (mbhc->cfg->hph_thr) {
+ if (mbhc->cfg->micb_mv == micbias_mv)
+ hph_threshold = mbhc->cfg->hph_thr;
+ else
+ hph_threshold = (mbhc->cfg->hph_thr *
+ micbias_mv) / mbhc->cfg->micb_mv;
+ } else {
+ hph_threshold = ((WCD_MBHC_ADC_HPH_THRESHOLD_MV *
+ micbias_mv) / WCD_MBHC_ADC_MICBIAS_MV);
+ }
+ return hph_threshold;
+}
+
+static void wcd_mbhc_adc_update_fsm_source(struct wcd_mbhc *mbhc,
+ enum wcd_mbhc_plug_type plug_type)
+{
+ bool micbias2 = false;
+
+ switch (plug_type) {
+ case MBHC_PLUG_TYPE_HEADPHONE:
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_BTN_ISRC_CTL, 3);
+ break;
+ case MBHC_PLUG_TYPE_HEADSET:
+ if (mbhc->mbhc_cb->micbias_enable_status)
+ micbias2 = mbhc->mbhc_cb->micbias_enable_status(mbhc->component,
+ MIC_BIAS_2);
+
+ if (!mbhc->is_hs_recording && !micbias2)
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_BTN_ISRC_CTL, 3);
+ break;
+ default:
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_BTN_ISRC_CTL, 0);
+ break;
+
+ };
+}
+
+static void wcd_mbhc_bcs_enable(struct wcd_mbhc *mbhc, int plug_type, bool enable)
+{
+ switch (plug_type) {
+ case MBHC_PLUG_TYPE_HEADSET:
+ case MBHC_PLUG_TYPE_HEADPHONE:
+ if (mbhc->mbhc_cb->bcs_enable)
+ mbhc->mbhc_cb->bcs_enable(mbhc->component, enable);
+ break;
+ default:
+ break;
+ }
+}
+
+static int wcd_mbhc_get_plug_from_adc(struct wcd_mbhc *mbhc, int adc_result)
+
+{
+ enum wcd_mbhc_plug_type plug_type;
+ u32 hph_thr, hs_thr;
+
+ hs_thr = wcd_mbhc_adc_get_hs_thres(mbhc);
+ hph_thr = wcd_mbhc_adc_get_hph_thres(mbhc);
+
+ if (adc_result < hph_thr)
+ plug_type = MBHC_PLUG_TYPE_HEADPHONE;
+ else if (adc_result > hs_thr)
+ plug_type = MBHC_PLUG_TYPE_HIGH_HPH;
+ else
+ plug_type = MBHC_PLUG_TYPE_HEADSET;
+
+ return plug_type;
+}
+
+static void wcd_correct_swch_plug(struct work_struct *work)
+{
+ struct wcd_mbhc *mbhc;
+ struct snd_soc_component *component;
+ enum wcd_mbhc_plug_type plug_type = MBHC_PLUG_TYPE_INVALID;
+ unsigned long timeout;
+ int pt_gnd_mic_swap_cnt = 0;
+ int output_mv, cross_conn, hs_threshold, try = 0;
+ bool is_pa_on;
+
+ mbhc = container_of(work, struct wcd_mbhc, correct_plug_swch);
+ component = mbhc->component;
+
+ hs_threshold = wcd_mbhc_adc_get_hs_thres(mbhc);
+
+ /* Mask ADC COMPLETE interrupt */
+ disable_irq_nosync(mbhc->intr_ids->mbhc_hs_ins_intr);
+
+ /* Check for cross connection */
+ do {
+ cross_conn = wcd_check_cross_conn(mbhc);
+ try++;
+ } while (try < GND_MIC_SWAP_THRESHOLD);
+
+ if (cross_conn > 0) {
+ plug_type = MBHC_PLUG_TYPE_GND_MIC_SWAP;
+ dev_err(mbhc->dev, "cross connection found, Plug type %d\n",
+ plug_type);
+ goto correct_plug_type;
+ }
+
+ /* Find plug type */
+ output_mv = wcd_measure_adc_continuous(mbhc);
+ plug_type = wcd_mbhc_get_plug_from_adc(mbhc, output_mv);
+
+ /*
+ * Report plug type if it is either headset or headphone
+ * else start the 3 sec loop
+ */
+ switch (plug_type) {
+ case MBHC_PLUG_TYPE_HEADPHONE:
+ wcd_mbhc_find_plug_and_report(mbhc, plug_type);
+ break;
+ case MBHC_PLUG_TYPE_HEADSET:
+ wcd_mbhc_find_plug_and_report(mbhc, plug_type);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ADC_MODE, 0);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ADC_EN, 0);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_DETECTION_DONE, 1);
+ break;
+ default:
+ break;
+ }
+
+correct_plug_type:
+
+ /* Disable BCS slow insertion detection */
+ wcd_mbhc_bcs_enable(mbhc, plug_type, false);
+
+ timeout = jiffies + msecs_to_jiffies(HS_DETECT_PLUG_TIME_MS);
+
+ while (!time_after(jiffies, timeout)) {
+ if (mbhc->hs_detect_work_stop) {
+ wcd_micbias_disable(mbhc);
+ goto exit;
+ }
+
+ msleep(180);
+ /*
+ * Use ADC single mode to minimize the chance of missing out
+ * btn press/release for HEADSET type during correct work.
+ */
+ output_mv = wcd_measure_adc_once(mbhc, MUX_CTL_IN2P);
+ plug_type = wcd_mbhc_get_plug_from_adc(mbhc, output_mv);
+ is_pa_on = wcd_mbhc_read_field(mbhc, WCD_MBHC_HPH_PA_EN);
+
+ if ((output_mv <= hs_threshold) && !is_pa_on) {
+ /* Check for cross connection*/
+ cross_conn = wcd_check_cross_conn(mbhc);
+ if (cross_conn > 0) { /* cross-connection */
+ pt_gnd_mic_swap_cnt++;
+ if (pt_gnd_mic_swap_cnt < GND_MIC_SWAP_THRESHOLD)
+ continue;
+ else
+ plug_type = MBHC_PLUG_TYPE_GND_MIC_SWAP;
+ } else if (!cross_conn) { /* no cross connection */
+ pt_gnd_mic_swap_cnt = 0;
+ plug_type = wcd_mbhc_get_plug_from_adc(mbhc, output_mv);
+ continue;
+ } else if (cross_conn < 0) /* Error */
+ continue;
+
+ if (pt_gnd_mic_swap_cnt == GND_MIC_SWAP_THRESHOLD) {
+ /* US_EU gpio present, flip switch */
+ if (mbhc->cfg->swap_gnd_mic) {
+ if (mbhc->cfg->swap_gnd_mic(component, true))
+ continue;
+ }
+ }
+ }
+
+ if (output_mv > hs_threshold) /* cable is extension cable */
+ plug_type = MBHC_PLUG_TYPE_HIGH_HPH;
+ }
+
+ wcd_mbhc_bcs_enable(mbhc, plug_type, true);
+
+ if (plug_type == MBHC_PLUG_TYPE_HIGH_HPH)
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ELECT_ISRC_EN, 1);
+
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ADC_MODE, 0);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ADC_EN, 0);
+ wcd_mbhc_find_plug_and_report(mbhc, plug_type);
+
+ /*
+ * Set DETECTION_DONE bit for HEADSET
+ * so that btn press/release interrupt can be generated.
+ * For other plug type, clear the bit.
+ */
+ if (plug_type == MBHC_PLUG_TYPE_HEADSET)
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_DETECTION_DONE, 1);
+ else
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_DETECTION_DONE, 0);
+
+ if (mbhc->mbhc_cb->mbhc_micbias_control)
+ wcd_mbhc_adc_update_fsm_source(mbhc, plug_type);
+
+exit:
+ if (mbhc->mbhc_cb->mbhc_micbias_control/* && !mbhc->micbias_enable*/)
+ mbhc->mbhc_cb->mbhc_micbias_control(component, MIC_BIAS_2, MICB_DISABLE);
+
+ /*
+ * If plug type is corrected from special headset to headphone,
+ * clear the micbias enable flag, set micbias back to 1.8V and
+ * disable micbias.
+ */
+ if (plug_type == MBHC_PLUG_TYPE_HEADPHONE) {
+ wcd_micbias_disable(mbhc);
+ /*
+ * Enable ADC COMPLETE interrupt for HEADPHONE.
+ * Btn release may happen after the correct work, ADC COMPLETE
+ * interrupt needs to be captured to correct plug type.
+ */
+ enable_irq(mbhc->intr_ids->mbhc_hs_ins_intr);
+ }
+
+ if (mbhc->mbhc_cb->hph_pull_down_ctrl)
+ mbhc->mbhc_cb->hph_pull_down_ctrl(component, true);
+}
+
+static irqreturn_t wcd_mbhc_adc_hs_rem_irq(int irq, void *data)
+{
+ struct wcd_mbhc *mbhc = data;
+ unsigned long timeout;
+ int adc_threshold, output_mv, retry = 0;
+ bool hphpa_on = false;
+
+ mutex_lock(&mbhc->lock);
+ timeout = jiffies + msecs_to_jiffies(WCD_FAKE_REMOVAL_MIN_PERIOD_MS);
+ adc_threshold = wcd_mbhc_adc_get_hs_thres(mbhc);
+
+ do {
+ retry++;
+ /*
+ * read output_mv every 10ms to look for
+ * any change in IN2_P
+ */
+ usleep_range(10000, 10100);
+ output_mv = wcd_measure_adc_once(mbhc, MUX_CTL_IN2P);
+
+ /* Check for fake removal */
+ if ((output_mv <= adc_threshold) && retry > FAKE_REM_RETRY_ATTEMPTS)
+ goto exit;
+ } while (!time_after(jiffies, timeout));
+
+ /*
+ * ADC COMPLETE and ELEC_REM interrupts are both enabled for
+ * HEADPHONE, need to reject the ADC COMPLETE interrupt which
+ * follows ELEC_REM one when HEADPHONE is removed.
+ */
+ if (mbhc->current_plug == MBHC_PLUG_TYPE_HEADPHONE)
+ mbhc->extn_cable_hph_rem = true;
+
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_DETECTION_DONE, 0);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ADC_MODE, 0);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_ADC_EN, 0);
+ wcd_mbhc_elec_hs_report_unplug(mbhc);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_BTN_ISRC_CTL, 0);
+
+ if (hphpa_on) {
+ hphpa_on = false;
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_HPH_PA_EN, 3);
+ }
+exit:
+ mutex_unlock(&mbhc->lock);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t wcd_mbhc_adc_hs_ins_irq(int irq, void *data)
+{
+ struct wcd_mbhc *mbhc = data;
+ u8 clamp_state = 0;
+ u8 clamp_retry = WCD_MBHC_FAKE_INS_RETRY;
+
+ /*
+ * ADC COMPLETE and ELEC_REM interrupts are both enabled for HEADPHONE,
+ * need to reject the ADC COMPLETE interrupt which follows ELEC_REM one
+ * when HEADPHONE is removed.
+ */
+ if (mbhc->extn_cable_hph_rem == true) {
+ mbhc->extn_cable_hph_rem = false;
+ return IRQ_HANDLED;
+ }
+
+ do {
+ clamp_state = wcd_mbhc_read_field(mbhc, WCD_MBHC_IN2P_CLAMP_STATE);
+ if (clamp_state)
+ return IRQ_HANDLED;
+ /*
+ * check clamp for 120ms but at 30ms chunks to leave
+ * room for other interrupts to be processed
+ */
+ usleep_range(30000, 30100);
+ } while (--clamp_retry);
+
+ /*
+ * If current plug is headphone then there is no chance to
+ * get ADC complete interrupt, so connected cable should be
+ * headset not headphone.
+ */
+ if (mbhc->current_plug == MBHC_PLUG_TYPE_HEADPHONE) {
+ disable_irq_nosync(mbhc->intr_ids->mbhc_hs_ins_intr);
+ wcd_mbhc_write_field(mbhc, WCD_MBHC_DETECTION_DONE, 1);
+ wcd_mbhc_find_plug_and_report(mbhc, MBHC_PLUG_TYPE_HEADSET);
+ return IRQ_HANDLED;
+ }
+
+ return IRQ_HANDLED;
+}
+
+int wcd_mbhc_get_impedance(struct wcd_mbhc *mbhc, uint32_t *zl, uint32_t *zr)
+{
+ *zl = mbhc->zl;
+ *zr = mbhc->zr;
+
+ if (*zl && *zr)
+ return 0;
+ else
+ return -EINVAL;
+}
+EXPORT_SYMBOL(wcd_mbhc_get_impedance);
+
+void wcd_mbhc_set_hph_type(struct wcd_mbhc *mbhc, int hph_type)
+{
+ mbhc->hph_type = hph_type;
+}
+EXPORT_SYMBOL(wcd_mbhc_set_hph_type);
+
+int wcd_mbhc_get_hph_type(struct wcd_mbhc *mbhc)
+{
+ return mbhc->hph_type;
+}
+EXPORT_SYMBOL(wcd_mbhc_get_hph_type);
+
+int wcd_mbhc_start(struct wcd_mbhc *mbhc, struct wcd_mbhc_config *cfg,
+ struct snd_soc_jack *jack)
+{
+ if (!mbhc || !cfg || !jack)
+ return -EINVAL;
+
+ mbhc->cfg = cfg;
+ mbhc->jack = jack;
+
+ return wcd_mbhc_initialise(mbhc);
+}
+EXPORT_SYMBOL(wcd_mbhc_start);
+
+void wcd_mbhc_stop(struct wcd_mbhc *mbhc)
+{
+ mbhc->current_plug = MBHC_PLUG_TYPE_NONE;
+ mbhc->hph_status = 0;
+ disable_irq_nosync(mbhc->intr_ids->hph_left_ocp);
+ disable_irq_nosync(mbhc->intr_ids->hph_right_ocp);
+}
+EXPORT_SYMBOL(wcd_mbhc_stop);
+
+int wcd_dt_parse_mbhc_data(struct device *dev, struct wcd_mbhc_config *cfg)
+{
+ struct device_node *np = dev->of_node;
+ int ret, i, microvolt;
+
+ if (of_property_read_bool(np, "qcom,hphl-jack-type-normally-closed"))
+ cfg->hphl_swh = false;
+ else
+ cfg->hphl_swh = true;
+
+ if (of_property_read_bool(np, "qcom,ground-jack-type-normally-closed"))
+ cfg->gnd_swh = false;
+ else
+ cfg->gnd_swh = true;
+
+ ret = of_property_read_u32(np, "qcom,mbhc-headset-vthreshold-microvolt",
+ µvolt);
+ if (ret)
+ dev_dbg(dev, "missing qcom,mbhc-hs-mic-max-vthreshold--microvolt in dt node\n");
+ else
+ cfg->hs_thr = microvolt/1000;
+
+ ret = of_property_read_u32(np, "qcom,mbhc-headphone-vthreshold-microvolt",
+ µvolt);
+ if (ret)
+ dev_dbg(dev, "missing qcom,mbhc-hs-mic-min-vthreshold-microvolt entry\n");
+ else
+ cfg->hph_thr = microvolt/1000;
+
+ ret = of_property_read_u32_array(np,
+ "qcom,mbhc-buttons-vthreshold-microvolt",
+ &cfg->btn_high[0],
+ WCD_MBHC_DEF_BUTTONS);
+ if (ret)
+ dev_err(dev, "missing qcom,mbhc-buttons-vthreshold-microvolt entry\n");
+
+ for (i = 0; i < WCD_MBHC_DEF_BUTTONS; i++) {
+ if (ret) /* default voltage */
+ cfg->btn_high[i] = 500000;
+ else
+ /* Micro to Milli Volts */
+ cfg->btn_high[i] = cfg->btn_high[i]/1000;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(wcd_dt_parse_mbhc_data);
+
+struct wcd_mbhc *wcd_mbhc_init(struct snd_soc_component *component,
+ const struct wcd_mbhc_cb *mbhc_cb,
+ const struct wcd_mbhc_intr *intr_ids,
+ struct wcd_mbhc_field *fields,
+ bool impedance_det_en)
+{
+ struct device *dev = component->dev;
+ struct wcd_mbhc *mbhc;
+ int ret;
+
+ if (!intr_ids || !fields || !mbhc_cb || !mbhc_cb->mbhc_bias || !mbhc_cb->set_btn_thr) {
+ dev_err(dev, "%s: Insufficient mbhc configuration\n", __func__);
+ return ERR_PTR(-EINVAL);
+ }
+
+ mbhc = devm_kzalloc(dev, sizeof(*mbhc), GFP_KERNEL);
+ if (!mbhc)
+ return ERR_PTR(-ENOMEM);
+
+ mbhc->component = component;
+ mbhc->dev = dev;
+ mbhc->intr_ids = intr_ids;
+ mbhc->mbhc_cb = mbhc_cb;
+ mbhc->fields = fields;
+ mbhc->mbhc_detection_logic = WCD_DETECTION_ADC;
+
+ if (mbhc_cb->compute_impedance)
+ mbhc->impedance_detect = impedance_det_en;
+
+ INIT_DELAYED_WORK(&mbhc->mbhc_btn_dwork, wcd_btn_long_press_fn);
+
+ mutex_init(&mbhc->lock);
+
+ INIT_WORK(&mbhc->correct_plug_swch, wcd_correct_swch_plug);
+
+ ret = devm_request_threaded_irq(dev, mbhc->intr_ids->mbhc_sw_intr, NULL,
+ wcd_mbhc_mech_plug_detect_irq,
+ IRQF_ONESHOT | IRQF_TRIGGER_RISING,
+ "mbhc sw intr", mbhc);
+ if (ret)
+ goto err;
+
+ ret = devm_request_threaded_irq(dev, mbhc->intr_ids->mbhc_btn_press_intr, NULL,
+ wcd_mbhc_btn_press_handler,
+ IRQF_ONESHOT | IRQF_TRIGGER_RISING,
+ "Button Press detect", mbhc);
+ if (ret)
+ goto err;
+
+ ret = devm_request_threaded_irq(dev, mbhc->intr_ids->mbhc_btn_release_intr, NULL,
+ wcd_mbhc_btn_release_handler,
+ IRQF_ONESHOT | IRQF_TRIGGER_RISING,
+ "Button Release detect", mbhc);
+ if (ret)
+ goto err;
+
+ ret = devm_request_threaded_irq(dev, mbhc->intr_ids->mbhc_hs_ins_intr, NULL,
+ wcd_mbhc_adc_hs_ins_irq,
+ IRQF_ONESHOT | IRQF_TRIGGER_RISING,
+ "Elect Insert", mbhc);
+ if (ret)
+ goto err;
+
+ disable_irq_nosync(mbhc->intr_ids->mbhc_hs_ins_intr);
+
+ ret = devm_request_threaded_irq(dev, mbhc->intr_ids->mbhc_hs_rem_intr, NULL,
+ wcd_mbhc_adc_hs_rem_irq,
+ IRQF_ONESHOT | IRQF_TRIGGER_RISING,
+ "Elect Remove", mbhc);
+ if (ret)
+ goto err;
+
+ disable_irq_nosync(mbhc->intr_ids->mbhc_hs_rem_intr);
+
+ ret = devm_request_threaded_irq(dev, mbhc->intr_ids->hph_left_ocp, NULL,
+ wcd_mbhc_hphl_ocp_irq,
+ IRQF_ONESHOT | IRQF_TRIGGER_RISING,
+ "HPH_L OCP detect", mbhc);
+ if (ret)
+ goto err;
+
+ ret = devm_request_threaded_irq(dev, mbhc->intr_ids->hph_right_ocp, NULL,
+ wcd_mbhc_hphr_ocp_irq,
+ IRQF_ONESHOT | IRQF_TRIGGER_RISING,
+ "HPH_R OCP detect", mbhc);
+ if (ret)
+ goto err;
+
+ return mbhc;
+err:
+ dev_err(dev, "Failed to request mbhc interrupts %d\n", ret);
+
+ return ERR_PTR(ret);
+}
+EXPORT_SYMBOL(wcd_mbhc_init);
+
+void wcd_mbhc_deinit(struct wcd_mbhc *mbhc)
+{
+ mutex_lock(&mbhc->lock);
+ wcd_cancel_hs_detect_plug(mbhc, &mbhc->correct_plug_swch);
+ mutex_unlock(&mbhc->lock);
+}
+EXPORT_SYMBOL(wcd_mbhc_deinit);
+
+static int __init mbhc_init(void)
+{
+ return 0;
+}
+
+static void __exit mbhc_exit(void)
+{
+}
+
+module_init(mbhc_init);
+module_exit(mbhc_exit);
+
+MODULE_DESCRIPTION("wcd MBHC v2 module");
+MODULE_LICENSE("GPL");
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __WCD_MBHC_V2_H__
+#define __WCD_MBHC_V2_H__
+
+#include <sound/jack.h>
+
+#define WCD_MBHC_FIELD(id, rreg, rmask) \
+ [id] = { .reg = rreg, .mask = rmask }
+
+enum wcd_mbhc_field_function {
+ WCD_MBHC_L_DET_EN,
+ WCD_MBHC_GND_DET_EN,
+ WCD_MBHC_MECH_DETECTION_TYPE,
+ WCD_MBHC_MIC_CLAMP_CTL,
+ WCD_MBHC_ELECT_DETECTION_TYPE,
+ WCD_MBHC_HS_L_DET_PULL_UP_CTRL,
+ WCD_MBHC_HS_L_DET_PULL_UP_COMP_CTRL,
+ WCD_MBHC_HPHL_PLUG_TYPE,
+ WCD_MBHC_GND_PLUG_TYPE,
+ WCD_MBHC_SW_HPH_LP_100K_TO_GND,
+ WCD_MBHC_ELECT_SCHMT_ISRC,
+ WCD_MBHC_FSM_EN,
+ WCD_MBHC_INSREM_DBNC,
+ WCD_MBHC_BTN_DBNC,
+ WCD_MBHC_HS_VREF,
+ WCD_MBHC_HS_COMP_RESULT,
+ WCD_MBHC_IN2P_CLAMP_STATE,
+ WCD_MBHC_MIC_SCHMT_RESULT,
+ WCD_MBHC_HPHL_SCHMT_RESULT,
+ WCD_MBHC_HPHR_SCHMT_RESULT,
+ WCD_MBHC_OCP_FSM_EN,
+ WCD_MBHC_BTN_RESULT,
+ WCD_MBHC_BTN_ISRC_CTL,
+ WCD_MBHC_ELECT_RESULT,
+ WCD_MBHC_MICB_CTRL, /* Pull-up and micb control */
+ WCD_MBHC_HPH_CNP_WG_TIME,
+ WCD_MBHC_HPHR_PA_EN,
+ WCD_MBHC_HPHL_PA_EN,
+ WCD_MBHC_HPH_PA_EN,
+ WCD_MBHC_SWCH_LEVEL_REMOVE,
+ WCD_MBHC_PULLDOWN_CTRL,
+ WCD_MBHC_ANC_DET_EN,
+ WCD_MBHC_FSM_STATUS,
+ WCD_MBHC_MUX_CTL,
+ WCD_MBHC_MOISTURE_STATUS,
+ WCD_MBHC_HPHR_GND,
+ WCD_MBHC_HPHL_GND,
+ WCD_MBHC_HPHL_OCP_DET_EN,
+ WCD_MBHC_HPHR_OCP_DET_EN,
+ WCD_MBHC_HPHL_OCP_STATUS,
+ WCD_MBHC_HPHR_OCP_STATUS,
+ WCD_MBHC_ADC_EN,
+ WCD_MBHC_ADC_COMPLETE,
+ WCD_MBHC_ADC_TIMEOUT,
+ WCD_MBHC_ADC_RESULT,
+ WCD_MBHC_MICB2_VOUT,
+ WCD_MBHC_ADC_MODE,
+ WCD_MBHC_DETECTION_DONE,
+ WCD_MBHC_ELECT_ISRC_EN,
+ WCD_MBHC_REG_FUNC_MAX,
+};
+
+#define WCD_MBHC_DEF_BUTTONS 8
+#define WCD_MBHC_KEYCODE_NUM 8
+#define WCD_MBHC_USLEEP_RANGE_MARGIN_US 100
+#define WCD_MBHC_THR_HS_MICB_MV 2700
+#define WCD_MONO_HS_MIN_THR 2
+
+enum wcd_mbhc_detect_logic {
+ WCD_DETECTION_LEGACY,
+ WCD_DETECTION_ADC,
+};
+
+enum wcd_mbhc_cs_mb_en_flag {
+ WCD_MBHC_EN_CS = 0,
+ WCD_MBHC_EN_MB,
+ WCD_MBHC_EN_PULLUP,
+ WCD_MBHC_EN_NONE,
+};
+
+enum {
+ WCD_MBHC_ELEC_HS_INS,
+ WCD_MBHC_ELEC_HS_REM,
+};
+
+enum wcd_mbhc_plug_type {
+ MBHC_PLUG_TYPE_INVALID = -1,
+ MBHC_PLUG_TYPE_NONE,
+ MBHC_PLUG_TYPE_HEADSET,
+ MBHC_PLUG_TYPE_HEADPHONE,
+ MBHC_PLUG_TYPE_HIGH_HPH,
+ MBHC_PLUG_TYPE_GND_MIC_SWAP,
+};
+
+enum pa_dac_ack_flags {
+ WCD_MBHC_HPHL_PA_OFF_ACK = 0,
+ WCD_MBHC_HPHR_PA_OFF_ACK,
+};
+
+enum wcd_mbhc_btn_det_mem {
+ WCD_MBHC_BTN_DET_V_BTN_LOW,
+ WCD_MBHC_BTN_DET_V_BTN_HIGH
+};
+
+enum {
+ MIC_BIAS_1 = 1,
+ MIC_BIAS_2,
+ MIC_BIAS_3,
+ MIC_BIAS_4
+};
+
+enum {
+ MICB_PULLUP_ENABLE,
+ MICB_PULLUP_DISABLE,
+ MICB_ENABLE,
+ MICB_DISABLE,
+};
+
+enum wcd_notify_event {
+ WCD_EVENT_INVALID,
+ /* events for micbias ON and OFF */
+ WCD_EVENT_PRE_MICBIAS_2_OFF,
+ WCD_EVENT_POST_MICBIAS_2_OFF,
+ WCD_EVENT_PRE_MICBIAS_2_ON,
+ WCD_EVENT_POST_MICBIAS_2_ON,
+ WCD_EVENT_PRE_DAPM_MICBIAS_2_OFF,
+ WCD_EVENT_POST_DAPM_MICBIAS_2_OFF,
+ WCD_EVENT_PRE_DAPM_MICBIAS_2_ON,
+ WCD_EVENT_POST_DAPM_MICBIAS_2_ON,
+ /* events for PA ON and OFF */
+ WCD_EVENT_PRE_HPHL_PA_ON,
+ WCD_EVENT_POST_HPHL_PA_OFF,
+ WCD_EVENT_PRE_HPHR_PA_ON,
+ WCD_EVENT_POST_HPHR_PA_OFF,
+ WCD_EVENT_PRE_HPHL_PA_OFF,
+ WCD_EVENT_PRE_HPHR_PA_OFF,
+ WCD_EVENT_OCP_OFF,
+ WCD_EVENT_OCP_ON,
+ WCD_EVENT_LAST,
+};
+
+enum wcd_mbhc_event_state {
+ WCD_MBHC_EVENT_PA_HPHL,
+ WCD_MBHC_EVENT_PA_HPHR,
+};
+
+enum wcd_mbhc_hph_type {
+ WCD_MBHC_HPH_NONE = 0,
+ WCD_MBHC_HPH_MONO,
+ WCD_MBHC_HPH_STEREO,
+};
+
+/*
+ * These enum definitions are directly mapped to the register
+ * definitions
+ */
+
+enum mbhc_hs_pullup_iref {
+ I_DEFAULT = -1,
+ I_OFF = 0,
+ I_1P0_UA,
+ I_2P0_UA,
+ I_3P0_UA,
+};
+
+enum mbhc_hs_pullup_iref_v2 {
+ HS_PULLUP_I_DEFAULT = -1,
+ HS_PULLUP_I_3P0_UA = 0,
+ HS_PULLUP_I_2P25_UA,
+ HS_PULLUP_I_1P5_UA,
+ HS_PULLUP_I_0P75_UA,
+ HS_PULLUP_I_1P125_UA = 0x05,
+ HS_PULLUP_I_0P375_UA = 0x07,
+ HS_PULLUP_I_2P0_UA,
+ HS_PULLUP_I_1P0_UA = 0x0A,
+ HS_PULLUP_I_0P5_UA,
+ HS_PULLUP_I_0P25_UA = 0x0F,
+ HS_PULLUP_I_0P125_UA = 0x17,
+ HS_PULLUP_I_OFF,
+};
+
+enum mbhc_moisture_rref {
+ R_OFF,
+ R_24_KOHM,
+ R_84_KOHM,
+ R_184_KOHM,
+};
+
+struct wcd_mbhc_config {
+ int btn_high[WCD_MBHC_DEF_BUTTONS];
+ int btn_low[WCD_MBHC_DEF_BUTTONS];
+ int v_hs_max;
+ int num_btn;
+ bool mono_stero_detection;
+ bool (*swap_gnd_mic)(struct snd_soc_component *component, bool active);
+ bool hs_ext_micbias;
+ bool gnd_det_en;
+ uint32_t linein_th;
+ bool moisture_en;
+ int mbhc_micbias;
+ int anc_micbias;
+ bool moisture_duty_cycle_en;
+ bool hphl_swh; /*track HPHL switch NC / NO */
+ bool gnd_swh; /*track GND switch NC / NO */
+ u32 hs_thr;
+ u32 hph_thr;
+ u32 micb_mv;
+ u32 moist_vref;
+ u32 moist_iref;
+ u32 moist_rref;
+};
+
+struct wcd_mbhc_intr {
+ int mbhc_sw_intr;
+ int mbhc_btn_press_intr;
+ int mbhc_btn_release_intr;
+ int mbhc_hs_ins_intr;
+ int mbhc_hs_rem_intr;
+ int hph_left_ocp;
+ int hph_right_ocp;
+};
+
+struct wcd_mbhc_field {
+ u16 reg;
+ u8 mask;
+};
+
+struct wcd_mbhc;
+
+struct wcd_mbhc_cb {
+ void (*update_cross_conn_thr)(struct snd_soc_component *component);
+ void (*get_micbias_val)(struct snd_soc_component *component, int *mb);
+ void (*bcs_enable)(struct snd_soc_component *component, bool bcs_enable);
+ void (*compute_impedance)(struct snd_soc_component *component,
+ uint32_t *zl, uint32_t *zr);
+ void (*set_micbias_value)(struct snd_soc_component *component);
+ void (*set_auto_zeroing)(struct snd_soc_component *component,
+ bool enable);
+ void (*clk_setup)(struct snd_soc_component *component, bool enable);
+ bool (*micbias_enable_status)(struct snd_soc_component *component, int micb_num);
+ void (*mbhc_bias)(struct snd_soc_component *component, bool enable);
+ void (*set_btn_thr)(struct snd_soc_component *component,
+ int *btn_low, int *btn_high,
+ int num_btn, bool is_micbias);
+ void (*hph_pull_up_control)(struct snd_soc_component *component,
+ enum mbhc_hs_pullup_iref);
+ int (*mbhc_micbias_control)(struct snd_soc_component *component,
+ int micb_num, int req);
+ void (*mbhc_micb_ramp_control)(struct snd_soc_component *component,
+ bool enable);
+ bool (*extn_use_mb)(struct snd_soc_component *component);
+ int (*mbhc_micb_ctrl_thr_mic)(struct snd_soc_component *component,
+ int micb_num, bool req_en);
+ void (*mbhc_gnd_det_ctrl)(struct snd_soc_component *component,
+ bool enable);
+ void (*hph_pull_down_ctrl)(struct snd_soc_component *component,
+ bool enable);
+ void (*mbhc_moisture_config)(struct snd_soc_component *component);
+ void (*update_anc_state)(struct snd_soc_component *component,
+ bool enable, int anc_num);
+ void (*hph_pull_up_control_v2)(struct snd_soc_component *component,
+ int pull_up_cur);
+ bool (*mbhc_get_moisture_status)(struct snd_soc_component *component);
+ void (*mbhc_moisture_polling_ctrl)(struct snd_soc_component *component, bool enable);
+ void (*mbhc_moisture_detect_en)(struct snd_soc_component *component, bool enable);
+};
+
+#if IS_ENABLED(CONFIG_SND_SOC_WCD_MBHC)
+int wcd_dt_parse_mbhc_data(struct device *dev, struct wcd_mbhc_config *cfg);
+int wcd_mbhc_start(struct wcd_mbhc *mbhc, struct wcd_mbhc_config *mbhc_cfg,
+ struct snd_soc_jack *jack);
+void wcd_mbhc_stop(struct wcd_mbhc *mbhc);
+void wcd_mbhc_set_hph_type(struct wcd_mbhc *mbhc, int hph_type);
+int wcd_mbhc_get_hph_type(struct wcd_mbhc *mbhc);
+struct wcd_mbhc *wcd_mbhc_init(struct snd_soc_component *component,
+ const struct wcd_mbhc_cb *mbhc_cb,
+ const struct wcd_mbhc_intr *mbhc_cdc_intr_ids,
+ struct wcd_mbhc_field *fields,
+ bool impedance_det_en);
+int wcd_mbhc_get_impedance(struct wcd_mbhc *mbhc, uint32_t *zl,
+ uint32_t *zr);
+void wcd_mbhc_deinit(struct wcd_mbhc *mbhc);
+int wcd_mbhc_event_notify(struct wcd_mbhc *mbhc, unsigned long event);
+
+#else
+static inline int wcd_dt_parse_mbhc_data(struct device *dev,
+ struct wcd_mbhc_config *cfg)
+{
+ return -ENOTSUPP;
+}
+
+static inline void wcd_mbhc_stop(struct wcd_mbhc *mbhc)
+{
+}
+
+static inline struct wcd_mbhc *wcd_mbhc_init(struct snd_soc_component *component,
+ const struct wcd_mbhc_cb *mbhc_cb,
+ const struct wcd_mbhc_intr *mbhc_cdc_intr_ids,
+ struct wcd_mbhc_field *fields,
+ bool impedance_det_en)
+{
+ return ERR_PTR(-ENOTSUPP);
+}
+
+static inline void wcd_mbhc_set_hph_type(struct wcd_mbhc *mbhc, int hph_type)
+{
+}
+
+static inline int wcd_mbhc_get_hph_type(struct wcd_mbhc *mbhc)
+{
+ return -ENOTSUPP;
+}
+
+static inline int wcd_mbhc_event_notify(struct wcd_mbhc *mbhc, unsigned long event)
+{
+ return -ENOTSUPP;
+}
+
+static inline int wcd_mbhc_start(struct wcd_mbhc *mbhc,
+ struct wcd_mbhc_config *mbhc_cfg,
+ struct snd_soc_jack *jack)
+{
+ return 0;
+}
+
+static inline int wcd_mbhc_get_impedance(struct wcd_mbhc *mbhc,
+ uint32_t *zl,
+ uint32_t *zr)
+{
+ *zl = 0;
+ *zr = 0;
+ return -EINVAL;
+}
+static inline void wcd_mbhc_deinit(struct wcd_mbhc *mbhc)
+{
+}
+#endif
+
+#endif /* __WCD_MBHC_V2_H__ */
projects / platform / kernel / linux-starfive.git / commitdiff