ASoC: wcd: add audio codec drivers for MSM targets
Add snapshot of audio codec drivers for MSM targets from msm-4.4
kernel at the below commit level-
commit c03f0ace8a36 ("msm: ipa: enable suspend pipe for ODU")
(Kernel TIP as on 12-06-2016)
Change-Id: I80408bd56d3183fdedad427d28f857911e1d7738
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>
diff --git a/sound/soc/codecs/wcd-mbhc-v2.c b/sound/soc/codecs/wcd-mbhc-v2.c
new file mode 100644
index 0000000..cc54362
--- /dev/null
+++ b/sound/soc/codecs/wcd-mbhc-v2.c
@@ -0,0 +1,2606 @@
+/* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/of_gpio.h>
+#include <linux/platform_device.h>
+#include <linux/device.h>
+#include <linux/printk.h>
+#include <linux/ratelimit.h>
+#include <linux/list.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/pm_runtime.h>
+#include <linux/kernel.h>
+#include <linux/input.h>
+#include <linux/firmware.h>
+#include <linux/completion.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+#include "wcd-mbhc-v2.h"
+#include "wcdcal-hwdep.h"
+
+#define WCD_MBHC_JACK_MASK (SND_JACK_HEADSET | SND_JACK_OC_HPHL | \
+ SND_JACK_OC_HPHR | SND_JACK_LINEOUT | \
+ SND_JACK_MECHANICAL | SND_JACK_MICROPHONE2 | \
+ SND_JACK_UNSUPPORTED)
+
+#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)
+#define OCP_ATTEMPT 20
+#define HS_DETECT_PLUG_TIME_MS (3 * 1000)
+#define SPECIAL_HS_DETECT_TIME_MS (2 * 1000)
+#define MBHC_BUTTON_PRESS_THRESHOLD_MIN 250
+#define GND_MIC_SWAP_THRESHOLD 4
+#define WCD_FAKE_REMOVAL_MIN_PERIOD_MS 100
+#define HS_VREF_MIN_VAL 1400
+#define FW_READ_ATTEMPTS 15
+#define FW_READ_TIMEOUT 4000000
+#define FAKE_REM_RETRY_ATTEMPTS 3
+#define MAX_IMPED 60000
+
+#define WCD_MBHC_BTN_PRESS_COMPL_TIMEOUT_MS 50
+#define ANC_DETECT_RETRY_CNT 7
+#define WCD_MBHC_SPL_HS_CNT 1
+
+static int det_extn_cable_en;
+module_param(det_extn_cable_en, int, 0664);
+MODULE_PARM_DESC(det_extn_cable_en, "enable/disable extn cable detect");
+
+enum wcd_mbhc_cs_mb_en_flag {
+ WCD_MBHC_EN_CS = 0,
+ WCD_MBHC_EN_MB,
+ WCD_MBHC_EN_PULLUP,
+ WCD_MBHC_EN_NONE,
+};
+
+static void wcd_mbhc_jack_report(struct wcd_mbhc *mbhc,
+ struct snd_soc_jack *jack, int status, int mask)
+{
+ snd_soc_jack_report(jack, status, mask);
+}
+
+static void __hphocp_off_report(struct wcd_mbhc *mbhc, u32 jack_status,
+ int irq)
+{
+ struct snd_soc_codec *codec = mbhc->codec;
+
+ dev_dbg(codec->dev, "%s: clear ocp status %x\n",
+ __func__, jack_status);
+
+ if (mbhc->hph_status & jack_status) {
+ mbhc->hph_status &= ~jack_status;
+ wcd_mbhc_jack_report(mbhc, &mbhc->headset_jack,
+ mbhc->hph_status, WCD_MBHC_JACK_MASK);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_OCP_FSM_EN, 0);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_OCP_FSM_EN, 1);
+ /*
+ * reset retry counter as PA is turned off signifying
+ * start of new OCP detection session
+ */
+ if (mbhc->intr_ids->hph_left_ocp)
+ mbhc->hphlocp_cnt = 0;
+ else
+ mbhc->hphrocp_cnt = 0;
+ mbhc->mbhc_cb->irq_control(codec, irq, true);
+ }
+}
+
+static void hphrocp_off_report(struct wcd_mbhc *mbhc, u32 jack_status)
+{
+ __hphocp_off_report(mbhc, SND_JACK_OC_HPHR,
+ mbhc->intr_ids->hph_right_ocp);
+}
+
+static void hphlocp_off_report(struct wcd_mbhc *mbhc, u32 jack_status)
+{
+ __hphocp_off_report(mbhc, SND_JACK_OC_HPHL,
+ mbhc->intr_ids->hph_left_ocp);
+}
+
+static void wcd_program_hs_vref(struct wcd_mbhc *mbhc)
+{
+ struct wcd_mbhc_plug_type_cfg *plug_type_cfg;
+ struct snd_soc_codec *codec = mbhc->codec;
+ u32 reg_val;
+
+ plug_type_cfg = WCD_MBHC_CAL_PLUG_TYPE_PTR(mbhc->mbhc_cfg->calibration);
+ reg_val = ((plug_type_cfg->v_hs_max - HS_VREF_MIN_VAL) / 100);
+
+ dev_dbg(codec->dev, "%s: reg_val = %x\n", __func__, reg_val);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_HS_VREF, reg_val);
+}
+
+static void wcd_program_btn_threshold(const struct wcd_mbhc *mbhc, bool micbias)
+{
+ struct wcd_mbhc_btn_detect_cfg *btn_det;
+ struct snd_soc_codec *codec = mbhc->codec;
+ struct snd_soc_card *card = codec->component.card;
+ s16 *btn_low, *btn_high;
+
+ if (mbhc->mbhc_cfg->calibration == NULL) {
+ dev_err(card->dev, "%s: calibration data is NULL\n", __func__);
+ return;
+ }
+
+ btn_det = WCD_MBHC_CAL_BTN_DET_PTR(mbhc->mbhc_cfg->calibration);
+ btn_low = btn_det->_v_btn_low;
+ btn_high = ((void *)&btn_det->_v_btn_low) +
+ (sizeof(btn_det->_v_btn_low[0]) * btn_det->num_btn);
+
+ mbhc->mbhc_cb->set_btn_thr(codec, btn_low, btn_high, btn_det->num_btn,
+ micbias);
+}
+
+static void wcd_enable_curr_micbias(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;
+
+ pr_debug("%s: enter, cs_mb_en: %d\n", __func__, cs_mb_en);
+
+ switch (cs_mb_en) {
+ case WCD_MBHC_EN_CS:
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_MICB_CTRL, 0);
+ WCD_MBHC_REG_UPDATE_BITS(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_REG_UPDATE_BITS(WCD_MBHC_BTN_ISRC_CTL, 0);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_FSM_EN, 1);
+
+ /* Disable PULL_UP_EN & enable MICBIAS */
+ WCD_MBHC_REG_UPDATE_BITS(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_REG_UPDATE_BITS(WCD_MBHC_BTN_ISRC_CTL, 3);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_FSM_EN, 1);
+ WCD_MBHC_REG_UPDATE_BITS(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_REG_UPDATE_BITS(WCD_MBHC_BTN_ISRC_CTL, 0);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_FSM_EN, 1);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_MICB_CTRL, 0);
+ break;
+ default:
+ pr_debug("%s: Invalid parameter", __func__);
+ break;
+ }
+
+ pr_debug("%s: exit\n", __func__);
+}
+
+static const char *wcd_mbhc_get_event_string(int event)
+{
+ switch (event) {
+ case WCD_EVENT_PRE_MICBIAS_2_OFF:
+ return WCD_MBHC_STRINGIFY(WCD_EVENT_PRE_MICBIAS_2_OFF);
+ case WCD_EVENT_POST_MICBIAS_2_OFF:
+ return WCD_MBHC_STRINGIFY(WCD_EVENT_POST_MICBIAS_2_OFF);
+ case WCD_EVENT_PRE_MICBIAS_2_ON:
+ return WCD_MBHC_STRINGIFY(WCD_EVENT_PRE_MICBIAS_2_ON);
+ case WCD_EVENT_POST_MICBIAS_2_ON:
+ return WCD_MBHC_STRINGIFY(WCD_EVENT_POST_MICBIAS_2_ON);
+ case WCD_EVENT_PRE_HPHL_PA_ON:
+ return WCD_MBHC_STRINGIFY(WCD_EVENT_PRE_HPHL_PA_ON);
+ case WCD_EVENT_POST_HPHL_PA_OFF:
+ return WCD_MBHC_STRINGIFY(WCD_EVENT_POST_HPHL_PA_OFF);
+ case WCD_EVENT_PRE_HPHR_PA_ON:
+ return WCD_MBHC_STRINGIFY(WCD_EVENT_PRE_HPHR_PA_ON);
+ case WCD_EVENT_POST_HPHR_PA_OFF:
+ return WCD_MBHC_STRINGIFY(WCD_EVENT_POST_HPHR_PA_OFF);
+ case WCD_EVENT_PRE_HPHR_PA_OFF:
+ return WCD_MBHC_STRINGIFY(WCD_EVENT_PRE_HPHR_PA_OFF);
+ case WCD_EVENT_PRE_HPHL_PA_OFF:
+ return WCD_MBHC_STRINGIFY(WCD_EVENT_PRE_HPHL_PA_OFF);
+ case WCD_EVENT_POST_DAPM_MICBIAS_2_ON:
+ return WCD_MBHC_STRINGIFY(WCD_EVENT_POST_DAPM_MICBIAS_2_ON);
+ case WCD_EVENT_PRE_DAPM_MICBIAS_2_ON:
+ return WCD_MBHC_STRINGIFY(WCD_EVENT_PRE_DAPM_MICBIAS_2_ON);
+ case WCD_EVENT_POST_DAPM_MICBIAS_2_OFF:
+ return WCD_MBHC_STRINGIFY(WCD_EVENT_POST_DAPM_MICBIAS_2_OFF);
+ case WCD_EVENT_PRE_DAPM_MICBIAS_2_OFF:
+ return WCD_MBHC_STRINGIFY(WCD_EVENT_PRE_DAPM_MICBIAS_2_OFF);
+ case WCD_EVENT_OCP_OFF:
+ return WCD_MBHC_STRINGIFY(WCD_EVENT_OCP_OFF);
+ case WCD_EVENT_OCP_ON:
+ return WCD_MBHC_STRINGIFY(WCD_EVENT_OCP_ON);
+ case WCD_EVENT_INVALID:
+ default:
+ return WCD_MBHC_STRINGIFY(WCD_EVENT_INVALID);
+ }
+}
+
+static int wcd_event_notify(struct notifier_block *self, unsigned long val,
+ void *data)
+{
+ struct wcd_mbhc *mbhc = (struct wcd_mbhc *)data;
+ enum wcd_notify_event event = (enum wcd_notify_event)val;
+ struct snd_soc_codec *codec = mbhc->codec;
+ bool micbias2 = false;
+ bool micbias1 = false;
+ u8 fsm_en = 0;
+
+ pr_debug("%s: event %s (%d)\n", __func__,
+ wcd_mbhc_get_event_string(event), event);
+ if (mbhc->mbhc_cb->micbias_enable_status) {
+ micbias2 = mbhc->mbhc_cb->micbias_enable_status(mbhc,
+ MIC_BIAS_2);
+ micbias1 = mbhc->mbhc_cb->micbias_enable_status(mbhc,
+ MIC_BIAS_1);
+ }
+ switch (event) {
+ /* MICBIAS usage change */
+ case WCD_EVENT_POST_DAPM_MICBIAS_2_ON:
+ mbhc->is_hs_recording = true;
+ pr_debug("%s: is_capture: %d\n", __func__,
+ mbhc->is_hs_recording);
+ break;
+ case WCD_EVENT_POST_MICBIAS_2_ON:
+ if (!mbhc->micbias_enable)
+ goto out_micb_en;
+ if (mbhc->mbhc_cb->mbhc_common_micb_ctrl) {
+ mbhc->mbhc_cb->mbhc_common_micb_ctrl(codec,
+ MBHC_COMMON_MICB_PRECHARGE,
+ true);
+ mbhc->mbhc_cb->mbhc_common_micb_ctrl(codec,
+ MBHC_COMMON_MICB_SET_VAL,
+ true);
+ /*
+ * Special headset needs MICBIAS as 2.7V so wait for
+ * 50 msec for the MICBIAS to reach 2.7 volts.
+ */
+ msleep(50);
+ }
+ if (mbhc->mbhc_cb->set_auto_zeroing)
+ mbhc->mbhc_cb->set_auto_zeroing(codec, true);
+ if (mbhc->mbhc_cb->mbhc_common_micb_ctrl)
+ mbhc->mbhc_cb->mbhc_common_micb_ctrl(codec,
+ MBHC_COMMON_MICB_PRECHARGE,
+ false);
+out_micb_en:
+ /* Disable current source if micbias enabled */
+ if (mbhc->mbhc_cb->mbhc_micbias_control) {
+ WCD_MBHC_REG_READ(WCD_MBHC_FSM_EN, fsm_en);
+ if (fsm_en)
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_BTN_ISRC_CTL,
+ 0);
+ } else {
+ mbhc->is_hs_recording = true;
+ wcd_enable_curr_micbias(mbhc, WCD_MBHC_EN_MB);
+ }
+ /* configure cap settings properly when micbias is enabled */
+ if (mbhc->mbhc_cb->set_cap_mode)
+ mbhc->mbhc_cb->set_cap_mode(codec, micbias1, true);
+ 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) {
+ WCD_MBHC_REG_READ(WCD_MBHC_FSM_EN, fsm_en);
+ if (fsm_en)
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_BTN_ISRC_CTL,
+ 3);
+ }
+ break;
+ /* MICBIAS usage change */
+ case WCD_EVENT_POST_DAPM_MICBIAS_2_OFF:
+ mbhc->is_hs_recording = false;
+ pr_debug("%s: is_capture: %d\n", __func__,
+ mbhc->is_hs_recording);
+ break;
+ case WCD_EVENT_POST_MICBIAS_2_OFF:
+ if (!mbhc->mbhc_cb->mbhc_micbias_control)
+ mbhc->is_hs_recording = false;
+ if (mbhc->micbias_enable) {
+ wcd_enable_curr_micbias(mbhc, WCD_MBHC_EN_MB);
+ break;
+ }
+
+ if (mbhc->mbhc_cb->set_auto_zeroing)
+ mbhc->mbhc_cb->set_auto_zeroing(codec, false);
+ if (mbhc->mbhc_cb->set_micbias_value && !mbhc->micbias_enable)
+ mbhc->mbhc_cb->set_micbias_value(codec);
+ /* 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_enable_curr_micbias(mbhc, WCD_MBHC_EN_PULLUP);
+ else
+ /* enable current source and disable mb, pullup*/
+ wcd_enable_curr_micbias(mbhc, WCD_MBHC_EN_CS);
+
+ /* configure cap settings properly when micbias is disabled */
+ if (mbhc->mbhc_cb->set_cap_mode)
+ mbhc->mbhc_cb->set_cap_mode(codec, micbias1, false);
+ break;
+ case WCD_EVENT_PRE_HPHL_PA_OFF:
+ mutex_lock(&mbhc->hphl_pa_lock);
+ break;
+ case WCD_EVENT_POST_HPHL_PA_OFF:
+ clear_bit(WCD_MBHC_HPHL_PA_OFF_ACK, &mbhc->hph_pa_dac_state);
+ if (mbhc->hph_status & SND_JACK_OC_HPHL)
+ hphlocp_off_report(mbhc, SND_JACK_OC_HPHL);
+ clear_bit(WCD_MBHC_EVENT_PA_HPHL, &mbhc->event_state);
+ /* check if micbias is enabled */
+ if (micbias2)
+ /* Disable cs, pullup & enable micbias */
+ wcd_enable_curr_micbias(mbhc, WCD_MBHC_EN_MB);
+ else
+ /* Disable micbias, pullup & enable cs */
+ wcd_enable_curr_micbias(mbhc, WCD_MBHC_EN_CS);
+ mutex_unlock(&mbhc->hphl_pa_lock);
+ break;
+ case WCD_EVENT_PRE_HPHR_PA_OFF:
+ mutex_lock(&mbhc->hphr_pa_lock);
+ break;
+ case WCD_EVENT_POST_HPHR_PA_OFF:
+ clear_bit(WCD_MBHC_HPHR_PA_OFF_ACK, &mbhc->hph_pa_dac_state);
+ if (mbhc->hph_status & SND_JACK_OC_HPHR)
+ hphrocp_off_report(mbhc, SND_JACK_OC_HPHR);
+ clear_bit(WCD_MBHC_EVENT_PA_HPHR, &mbhc->event_state);
+ /* check if micbias is enabled */
+ if (micbias2)
+ /* Disable cs, pullup & enable micbias */
+ wcd_enable_curr_micbias(mbhc, WCD_MBHC_EN_MB);
+ else
+ /* Disable micbias, pullup & enable cs */
+ wcd_enable_curr_micbias(mbhc, WCD_MBHC_EN_CS);
+ mutex_unlock(&mbhc->hphr_pa_lock);
+ 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_enable_curr_micbias(mbhc, WCD_MBHC_EN_MB);
+ else
+ /* Disable micbias, enable pullup & cs */
+ wcd_enable_curr_micbias(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_enable_curr_micbias(mbhc, WCD_MBHC_EN_MB);
+ else
+ /* Disable micbias, enable pullup & cs */
+ wcd_enable_curr_micbias(mbhc, WCD_MBHC_EN_PULLUP);
+ break;
+ case WCD_EVENT_OCP_OFF:
+ mbhc->mbhc_cb->irq_control(mbhc->codec,
+ mbhc->intr_ids->hph_left_ocp,
+ false);
+ break;
+ case WCD_EVENT_OCP_ON:
+ mbhc->mbhc_cb->irq_control(mbhc->codec,
+ mbhc->intr_ids->hph_left_ocp,
+ true);
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static int wcd_cancel_btn_work(struct wcd_mbhc *mbhc)
+{
+ int r;
+
+ r = cancel_delayed_work_sync(&mbhc->mbhc_btn_dwork);
+ /*
+ * if scheduled mbhc.mbhc_btn_dwork is canceled from here,
+ * we have to unlock from here instead btn_work
+ */
+ if (r)
+ mbhc->mbhc_cb->lock_sleep(mbhc, false);
+ return r;
+}
+
+static bool wcd_swch_level_remove(struct wcd_mbhc *mbhc)
+{
+ u16 result2 = 0;
+
+ WCD_MBHC_REG_READ(WCD_MBHC_SWCH_LEVEL_REMOVE, result2);
+ return (result2) ? true : false;
+}
+
+/* should be called under interrupt context that hold suspend */
+static void wcd_schedule_hs_detect_plug(struct wcd_mbhc *mbhc,
+ struct work_struct *work)
+{
+ pr_debug("%s: scheduling correct_swch_plug\n", __func__);
+ WCD_MBHC_RSC_ASSERT_LOCKED(mbhc);
+ mbhc->hs_detect_work_stop = false;
+ mbhc->mbhc_cb->lock_sleep(mbhc, true);
+ schedule_work(work);
+}
+
+/* called under codec_resource_lock acquisition */
+static void wcd_cancel_hs_detect_plug(struct wcd_mbhc *mbhc,
+ struct work_struct *work)
+{
+ pr_debug("%s: Canceling correct_plug_swch\n", __func__);
+ mbhc->hs_detect_work_stop = true;
+ WCD_MBHC_RSC_UNLOCK(mbhc);
+ if (cancel_work_sync(work)) {
+ pr_debug("%s: correct_plug_swch is canceled\n",
+ __func__);
+ mbhc->mbhc_cb->lock_sleep(mbhc, false);
+ }
+ WCD_MBHC_RSC_LOCK(mbhc);
+}
+
+static void wcd_mbhc_clr_and_turnon_hph_padac(struct wcd_mbhc *mbhc)
+{
+ bool pa_turned_on = false;
+ u8 wg_time = 0;
+
+ WCD_MBHC_REG_READ(WCD_MBHC_HPH_CNP_WG_TIME, wg_time);
+ wg_time += 1;
+
+ mutex_lock(&mbhc->hphr_pa_lock);
+ if (test_and_clear_bit(WCD_MBHC_HPHR_PA_OFF_ACK,
+ &mbhc->hph_pa_dac_state)) {
+ pr_debug("%s: HPHR clear flag and enable PA\n", __func__);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_HPHR_PA_EN, 1);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_HPHR_OCP_DET_EN, 1);
+ pa_turned_on = true;
+ }
+ mutex_unlock(&mbhc->hphr_pa_lock);
+ mutex_lock(&mbhc->hphl_pa_lock);
+ if (test_and_clear_bit(WCD_MBHC_HPHL_PA_OFF_ACK,
+ &mbhc->hph_pa_dac_state)) {
+ pr_debug("%s: HPHL clear flag and enable PA\n", __func__);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_HPHL_PA_EN, 1);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_HPHL_OCP_DET_EN, 1);
+ pa_turned_on = true;
+ }
+ mutex_unlock(&mbhc->hphl_pa_lock);
+
+ if (pa_turned_on) {
+ pr_debug("%s: PA was turned on by MBHC and not by DAPM\n",
+ __func__);
+ usleep_range(wg_time * 1000, wg_time * 1000 + 50);
+ }
+}
+
+static bool wcd_mbhc_is_hph_pa_on(struct wcd_mbhc *mbhc)
+{
+ bool hph_pa_on = false;
+
+ WCD_MBHC_REG_READ(WCD_MBHC_HPH_PA_EN, hph_pa_on);
+
+ return (hph_pa_on) ? true : false;
+}
+
+static void wcd_mbhc_set_and_turnoff_hph_padac(struct wcd_mbhc *mbhc)
+{
+ u8 wg_time = 0;
+
+ WCD_MBHC_REG_READ(WCD_MBHC_HPH_CNP_WG_TIME, wg_time);
+ wg_time += 1;
+
+ /* If headphone PA is on, check if userspace receives
+ * removal event to sync-up PA's state
+ */
+ if (wcd_mbhc_is_hph_pa_on(mbhc)) {
+ pr_debug("%s PA is on, setting PA_OFF_ACK\n", __func__);
+ set_bit(WCD_MBHC_HPHL_PA_OFF_ACK, &mbhc->hph_pa_dac_state);
+ set_bit(WCD_MBHC_HPHR_PA_OFF_ACK, &mbhc->hph_pa_dac_state);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_HPHL_OCP_DET_EN, 0);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_HPHR_OCP_DET_EN, 0);
+ } else {
+ pr_debug("%s PA is off\n", __func__);
+ }
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_HPH_PA_EN, 0);
+ usleep_range(wg_time * 1000, wg_time * 1000 + 50);
+}
+
+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;
+}
+
+static void wcd_mbhc_hs_elec_irq(struct wcd_mbhc *mbhc, int irq_type,
+ bool enable)
+{
+ int irq;
+
+ WCD_MBHC_RSC_ASSERT_LOCKED(mbhc);
+
+ if (irq_type == WCD_MBHC_ELEC_HS_INS)
+ irq = mbhc->intr_ids->mbhc_hs_ins_intr;
+ else if (irq_type == WCD_MBHC_ELEC_HS_REM)
+ irq = mbhc->intr_ids->mbhc_hs_rem_intr;
+ else {
+ pr_debug("%s: irq_type: %d, enable: %d\n",
+ __func__, irq_type, enable);
+ return;
+ }
+
+ pr_debug("%s: irq: %d, enable: %d, intr_status:%lu\n",
+ __func__, irq, enable, mbhc->intr_status);
+ if ((test_bit(irq_type, &mbhc->intr_status)) != enable) {
+ mbhc->mbhc_cb->irq_control(mbhc->codec, irq, enable);
+ if (enable)
+ set_bit(irq_type, &mbhc->intr_status);
+ else
+ clear_bit(irq_type, &mbhc->intr_status);
+ }
+}
+
+static void wcd_mbhc_report_plug(struct wcd_mbhc *mbhc, int insertion,
+ enum snd_jack_types jack_type)
+{
+ WCD_MBHC_RSC_ASSERT_LOCKED(mbhc);
+
+ pr_debug("%s: enter insertion %d hph_status %x\n",
+ __func__, insertion, mbhc->hph_status);
+ if (!insertion) {
+ /* Report removal */
+ mbhc->hph_status &= ~jack_type;
+ /*
+ * cancel possibly scheduled btn work and
+ * report release if we reported button press
+ */
+ if (wcd_cancel_btn_work(mbhc)) {
+ pr_debug("%s: button press is canceled\n", __func__);
+ } else if (mbhc->buttons_pressed) {
+ pr_debug("%s: release of button press%d\n",
+ __func__, jack_type);
+ wcd_mbhc_jack_report(mbhc, &mbhc->button_jack, 0,
+ mbhc->buttons_pressed);
+ mbhc->buttons_pressed &=
+ ~WCD_MBHC_JACK_BUTTON_MASK;
+ }
+
+ if (mbhc->micbias_enable) {
+ if (mbhc->mbhc_cb->mbhc_micbias_control)
+ mbhc->mbhc_cb->mbhc_micbias_control(
+ mbhc->codec, MIC_BIAS_2,
+ MICB_DISABLE);
+ if (mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic)
+ mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic(
+ mbhc->codec,
+ MIC_BIAS_2, false);
+ if (mbhc->mbhc_cb->set_micbias_value) {
+ mbhc->mbhc_cb->set_micbias_value(mbhc->codec);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_MICB_CTRL, 0);
+ }
+ mbhc->micbias_enable = false;
+ }
+
+ mbhc->hph_type = WCD_MBHC_HPH_NONE;
+ mbhc->zl = mbhc->zr = 0;
+ pr_debug("%s: Reporting removal %d(%x)\n", __func__,
+ jack_type, mbhc->hph_status);
+ wcd_mbhc_jack_report(mbhc, &mbhc->headset_jack,
+ mbhc->hph_status, WCD_MBHC_JACK_MASK);
+ wcd_mbhc_set_and_turnoff_hph_padac(mbhc);
+ hphrocp_off_report(mbhc, SND_JACK_OC_HPHR);
+ hphlocp_off_report(mbhc, SND_JACK_OC_HPHL);
+ mbhc->current_plug = MBHC_PLUG_TYPE_NONE;
+ } else {
+ /*
+ * Report removal of current jack type.
+ * Headphone to headset shouldn't report headphone
+ * removal.
+ */
+ if (mbhc->mbhc_cfg->detect_extn_cable &&
+ (mbhc->current_plug == MBHC_PLUG_TYPE_HIGH_HPH ||
+ jack_type == SND_JACK_LINEOUT) &&
+ (mbhc->hph_status && mbhc->hph_status != jack_type)) {
+
+ if (mbhc->micbias_enable) {
+ if (mbhc->mbhc_cb->mbhc_micbias_control)
+ mbhc->mbhc_cb->mbhc_micbias_control(
+ mbhc->codec, MIC_BIAS_2,
+ MICB_DISABLE);
+ if (mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic)
+ mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic(
+ mbhc->codec,
+ MIC_BIAS_2, false);
+ if (mbhc->mbhc_cb->set_micbias_value) {
+ mbhc->mbhc_cb->set_micbias_value(
+ mbhc->codec);
+ WCD_MBHC_REG_UPDATE_BITS(
+ WCD_MBHC_MICB_CTRL, 0);
+ }
+ mbhc->micbias_enable = false;
+ }
+ mbhc->hph_type = WCD_MBHC_HPH_NONE;
+ mbhc->zl = mbhc->zr = 0;
+ pr_debug("%s: Reporting removal (%x)\n",
+ __func__, mbhc->hph_status);
+ wcd_mbhc_jack_report(mbhc, &mbhc->headset_jack,
+ 0, WCD_MBHC_JACK_MASK);
+
+ if (mbhc->hph_status == SND_JACK_LINEOUT) {
+
+ pr_debug("%s: Enable micbias\n", __func__);
+ /* Disable current source and enable micbias */
+ wcd_enable_curr_micbias(mbhc, WCD_MBHC_EN_MB);
+ pr_debug("%s: set up elec removal detection\n",
+ __func__);
+ WCD_MBHC_REG_UPDATE_BITS(
+ WCD_MBHC_ELECT_DETECTION_TYPE,
+ 0);
+ usleep_range(200, 210);
+ wcd_mbhc_hs_elec_irq(mbhc,
+ WCD_MBHC_ELEC_HS_REM,
+ true);
+ }
+ mbhc->hph_status &= ~(SND_JACK_HEADSET |
+ SND_JACK_LINEOUT |
+ SND_JACK_ANC_HEADPHONE |
+ SND_JACK_UNSUPPORTED);
+ }
+
+ if (mbhc->current_plug == MBHC_PLUG_TYPE_HEADSET &&
+ jack_type == SND_JACK_HEADPHONE)
+ mbhc->hph_status &= ~SND_JACK_HEADSET;
+
+ /* Report insertion */
+ if (jack_type == SND_JACK_HEADPHONE)
+ mbhc->current_plug = MBHC_PLUG_TYPE_HEADPHONE;
+ else if (jack_type == SND_JACK_UNSUPPORTED)
+ mbhc->current_plug = MBHC_PLUG_TYPE_GND_MIC_SWAP;
+ else if (jack_type == SND_JACK_HEADSET) {
+ mbhc->current_plug = MBHC_PLUG_TYPE_HEADSET;
+ mbhc->jiffies_atreport = jiffies;
+ } else if (jack_type == SND_JACK_LINEOUT) {
+ mbhc->current_plug = MBHC_PLUG_TYPE_HIGH_HPH;
+ } else if (jack_type == SND_JACK_ANC_HEADPHONE)
+ mbhc->current_plug = MBHC_PLUG_TYPE_ANC_HEADPHONE;
+
+ if (mbhc->impedance_detect &&
+ mbhc->mbhc_cb->compute_impedance &&
+ (mbhc->mbhc_cfg->linein_th != 0)) {
+ mbhc->mbhc_cb->compute_impedance(mbhc,
+ &mbhc->zl, &mbhc->zr);
+ if ((mbhc->zl > mbhc->mbhc_cfg->linein_th &&
+ mbhc->zl < MAX_IMPED) &&
+ (mbhc->zr > mbhc->mbhc_cfg->linein_th &&
+ mbhc->zr < MAX_IMPED) &&
+ (jack_type == SND_JACK_HEADPHONE)) {
+ 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_JACK_UNSUPPORTED);
+ wcd_mbhc_jack_report(mbhc,
+ &mbhc->headset_jack,
+ mbhc->hph_status,
+ WCD_MBHC_JACK_MASK);
+ }
+ pr_debug("%s: Marking jack type as SND_JACK_LINEOUT\n",
+ __func__);
+ }
+ }
+
+ mbhc->hph_status |= jack_type;
+
+ pr_debug("%s: Reporting insertion %d(%x)\n", __func__,
+ jack_type, mbhc->hph_status);
+ wcd_mbhc_jack_report(mbhc, &mbhc->headset_jack,
+ (mbhc->hph_status | SND_JACK_MECHANICAL),
+ WCD_MBHC_JACK_MASK);
+ wcd_mbhc_clr_and_turnon_hph_padac(mbhc);
+ }
+ pr_debug("%s: leave hph_status %x\n", __func__, mbhc->hph_status);
+}
+
+static bool wcd_mbhc_detect_anc_plug_type(struct wcd_mbhc *mbhc)
+{
+ bool anc_mic_found = false;
+ u16 val, hs_comp_res, btn_status = 0;
+ unsigned long retry = 0;
+ int valid_plug_cnt = 0, invalid_plug_cnt = 0;
+ int btn_status_cnt = 0;
+ bool is_check_btn_press = false;
+
+
+ if (mbhc->mbhc_cfg->anc_micbias < MIC_BIAS_1 ||
+ mbhc->mbhc_cfg->anc_micbias > MIC_BIAS_4)
+ return false;
+
+ if (!mbhc->mbhc_cb->mbhc_micbias_control)
+ return false;
+
+ WCD_MBHC_REG_READ(WCD_MBHC_FSM_EN, val);
+
+ if (val)
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_FSM_EN, 0);
+
+ mbhc->mbhc_cb->mbhc_micbias_control(mbhc->codec,
+ mbhc->mbhc_cfg->anc_micbias,
+ MICB_ENABLE);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_MUX_CTL, 0x2);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_ANC_DET_EN, 1);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_FSM_EN, 1);
+ /*
+ * wait for button debounce time 20ms. If 4-pole plug is inserted
+ * into 5-pole jack, then there will be a button press interrupt
+ * during anc plug detection. In that case though Hs_comp_res is 0,
+ * it should not be declared as ANC plug type
+ */
+ usleep_range(20000, 20100);
+
+ /*
+ * After enabling FSM, to handle slow insertion scenarios,
+ * check hs_comp_result for few times to see if the IN3 voltage
+ * is below the Vref
+ */
+ do {
+ if (wcd_swch_level_remove(mbhc)) {
+ pr_debug("%s: Switch level is low\n", __func__);
+ goto exit;
+ }
+ pr_debug("%s: Retry attempt %lu\n", __func__, retry + 1);
+ WCD_MBHC_REG_READ(WCD_MBHC_HS_COMP_RESULT, hs_comp_res);
+
+ if (!hs_comp_res) {
+ valid_plug_cnt++;
+ is_check_btn_press = true;
+ } else
+ invalid_plug_cnt++;
+ /* Wait 1ms before taking another reading */
+ usleep_range(1000, 1100);
+
+ WCD_MBHC_REG_READ(WCD_MBHC_FSM_STATUS, btn_status);
+ if (btn_status)
+ btn_status_cnt++;
+
+ retry++;
+ } while (retry < ANC_DETECT_RETRY_CNT);
+
+ pr_debug("%s: valid: %d, invalid: %d, btn_status_cnt: %d\n",
+ __func__, valid_plug_cnt, invalid_plug_cnt, btn_status_cnt);
+
+ /* decision logic */
+ if ((valid_plug_cnt > invalid_plug_cnt) && is_check_btn_press &&
+ (btn_status_cnt == 0))
+ anc_mic_found = true;
+exit:
+ if (!val)
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_FSM_EN, 0);
+
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_ANC_DET_EN, 0);
+
+ mbhc->mbhc_cb->mbhc_micbias_control(mbhc->codec,
+ mbhc->mbhc_cfg->anc_micbias,
+ MICB_DISABLE);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_MUX_CTL, 0x0);
+ pr_debug("%s: anc mic %sfound\n", __func__,
+ anc_mic_found ? "" : "not ");
+ return anc_mic_found;
+}
+
+static void wcd_mbhc_find_plug_and_report(struct wcd_mbhc *mbhc,
+ enum wcd_mbhc_plug_type plug_type)
+{
+ bool anc_mic_found = false;
+ enum snd_jack_types jack_type;
+
+ pr_debug("%s: enter current_plug(%d) new_plug(%d)\n",
+ __func__, mbhc->current_plug, plug_type);
+
+ WCD_MBHC_RSC_ASSERT_LOCKED(mbhc);
+
+ if (mbhc->current_plug == plug_type) {
+ pr_debug("%s: cable already reported, exit\n", __func__);
+ goto exit;
+ }
+
+ if (plug_type == MBHC_PLUG_TYPE_HEADPHONE) {
+ /*
+ * Nothing was reported previously
+ * report a headphone or unsupported
+ */
+ wcd_mbhc_report_plug(mbhc, 1, SND_JACK_HEADPHONE);
+ } else if (plug_type == 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);
+ wcd_mbhc_report_plug(mbhc, 1, SND_JACK_UNSUPPORTED);
+ } else if (plug_type == MBHC_PLUG_TYPE_HEADSET) {
+ if (mbhc->mbhc_cfg->enable_anc_mic_detect)
+ anc_mic_found = wcd_mbhc_detect_anc_plug_type(mbhc);
+
+ jack_type = SND_JACK_HEADSET;
+ if (anc_mic_found)
+ jack_type = SND_JACK_ANC_HEADPHONE;
+
+ /*
+ * If Headphone was reported previously, this will
+ * only report the mic line
+ */
+ wcd_mbhc_report_plug(mbhc, 1, jack_type);
+ } else if (plug_type == MBHC_PLUG_TYPE_HIGH_HPH) {
+ if (mbhc->mbhc_cfg->detect_extn_cable) {
+ /* High impedance device found. Report as LINEOUT */
+ wcd_mbhc_report_plug(mbhc, 1, SND_JACK_LINEOUT);
+ pr_debug("%s: setup mic trigger for further detection\n",
+ __func__);
+
+ /* Disable HW FSM and current source */
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_FSM_EN, 0);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_BTN_ISRC_CTL, 0);
+ /* Setup for insertion detection */
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_ELECT_DETECTION_TYPE,
+ 1);
+ /*
+ * Enable HPHL trigger and MIC Schmitt triggers
+ * and request for elec insertion interrupts
+ */
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_ELECT_SCHMT_ISRC,
+ 3);
+ wcd_mbhc_hs_elec_irq(mbhc, WCD_MBHC_ELEC_HS_INS,
+ true);
+ } else {
+ wcd_mbhc_report_plug(mbhc, 1, SND_JACK_LINEOUT);
+ }
+ } else {
+ WARN(1, "Unexpected current plug_type %d, plug_type %d\n",
+ mbhc->current_plug, plug_type);
+ }
+exit:
+ pr_debug("%s: leave\n", __func__);
+}
+
+/* To determine if cross connection occurred */
+static int wcd_check_cross_conn(struct wcd_mbhc *mbhc)
+{
+ u16 swap_res = 0;
+ enum wcd_mbhc_plug_type plug_type = MBHC_PLUG_TYPE_NONE;
+ s16 reg1 = 0;
+ bool hphl_sch_res = 0, hphr_sch_res = 0;
+
+ if (wcd_swch_level_remove(mbhc)) {
+ pr_debug("%s: Switch level is low\n", __func__);
+ return -EINVAL;
+ }
+
+ /* If PA is enabled, dont check for cross-connection */
+ if (mbhc->mbhc_cb->hph_pa_on_status)
+ if (mbhc->mbhc_cb->hph_pa_on_status(mbhc->codec))
+ return false;
+
+ WCD_MBHC_REG_READ(WCD_MBHC_ELECT_SCHMT_ISRC, reg1);
+ /*
+ * Check if there is any cross connection,
+ * Micbias and schmitt trigger (HPHL-HPHR)
+ * needs to be enabled. For some codecs like wcd9335,
+ * pull-up will already be enabled when this function
+ * is called for cross-connection identification. No
+ * need to enable micbias in that case.
+ */
+ wcd_enable_curr_micbias(mbhc, WCD_MBHC_EN_MB);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_ELECT_SCHMT_ISRC, 2);
+
+ WCD_MBHC_REG_READ(WCD_MBHC_ELECT_RESULT, swap_res);
+ pr_debug("%s: swap_res%x\n", __func__, swap_res);
+
+ /*
+ * Read reg hphl and hphr schmitt result with cross connection
+ * bit. These bits will both be "0" in case of cross connection
+ * otherwise, they stay at 1
+ */
+ WCD_MBHC_REG_READ(WCD_MBHC_HPHL_SCHMT_RESULT, hphl_sch_res);
+ WCD_MBHC_REG_READ(WCD_MBHC_HPHR_SCHMT_RESULT, hphr_sch_res);
+ if (!(hphl_sch_res || hphr_sch_res)) {
+ plug_type = MBHC_PLUG_TYPE_GND_MIC_SWAP;
+ pr_debug("%s: Cross connection identified\n", __func__);
+ } else {
+ pr_debug("%s: No Cross connection found\n", __func__);
+ }
+
+ /* Disable schmitt trigger and restore micbias */
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_ELECT_SCHMT_ISRC, reg1);
+ pr_debug("%s: leave, plug type: %d\n", __func__, plug_type);
+
+ return (plug_type == MBHC_PLUG_TYPE_GND_MIC_SWAP) ? true : false;
+}
+
+static bool wcd_is_special_headset(struct wcd_mbhc *mbhc)
+{
+ struct snd_soc_codec *codec = mbhc->codec;
+ int delay = 0, rc;
+ bool ret = false;
+ u16 hs_comp_res;
+ bool is_spl_hs = false;
+
+ /*
+ * Increase micbias to 2.7V to detect headsets with
+ * threshold on microphone
+ */
+ if (mbhc->mbhc_cb->mbhc_micbias_control &&
+ !mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic) {
+ pr_debug("%s: callback fn micb_ctrl_thr_mic not defined\n",
+ __func__);
+ return false;
+ } else if (mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic) {
+ rc = mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic(codec,
+ MIC_BIAS_2, true);
+ if (rc) {
+ pr_err("%s: Micbias control for thr mic failed, rc: %d\n",
+ __func__, rc);
+ return false;
+ }
+ }
+
+ wcd_enable_curr_micbias(mbhc, WCD_MBHC_EN_MB);
+
+ pr_debug("%s: special headset, start register writes\n", __func__);
+
+ WCD_MBHC_REG_READ(WCD_MBHC_HS_COMP_RESULT, hs_comp_res);
+ while (!is_spl_hs) {
+ if (mbhc->hs_detect_work_stop) {
+ pr_debug("%s: stop requested: %d\n", __func__,
+ mbhc->hs_detect_work_stop);
+ break;
+ }
+ delay = delay + 50;
+ if (mbhc->mbhc_cb->mbhc_common_micb_ctrl) {
+ mbhc->mbhc_cb->mbhc_common_micb_ctrl(codec,
+ MBHC_COMMON_MICB_PRECHARGE,
+ true);
+ mbhc->mbhc_cb->mbhc_common_micb_ctrl(codec,
+ MBHC_COMMON_MICB_SET_VAL,
+ true);
+ }
+ /* Wait for 50msec for MICBIAS to settle down */
+ msleep(50);
+ if (mbhc->mbhc_cb->set_auto_zeroing)
+ mbhc->mbhc_cb->set_auto_zeroing(codec, true);
+ /* Wait for 50msec for FSM to update result values */
+ msleep(50);
+ WCD_MBHC_REG_READ(WCD_MBHC_HS_COMP_RESULT, hs_comp_res);
+ if (!(hs_comp_res)) {
+ pr_debug("%s: Special headset detected in %d msecs\n",
+ __func__, (delay * 2));
+ is_spl_hs = true;
+ }
+ if (delay == SPECIAL_HS_DETECT_TIME_MS) {
+ pr_debug("%s: Spl headset did not get detect in 4 sec\n",
+ __func__);
+ break;
+ }
+ }
+ if (is_spl_hs) {
+ pr_debug("%s: Headset with threshold found\n", __func__);
+ mbhc->micbias_enable = true;
+ ret = true;
+ }
+ if (mbhc->mbhc_cb->mbhc_common_micb_ctrl)
+ mbhc->mbhc_cb->mbhc_common_micb_ctrl(codec,
+ MBHC_COMMON_MICB_PRECHARGE,
+ false);
+ if (mbhc->mbhc_cb->set_micbias_value && !mbhc->micbias_enable)
+ mbhc->mbhc_cb->set_micbias_value(codec);
+ if (mbhc->mbhc_cb->set_auto_zeroing)
+ mbhc->mbhc_cb->set_auto_zeroing(codec, false);
+
+ if (mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic &&
+ !mbhc->micbias_enable)
+ mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic(codec, MIC_BIAS_2,
+ false);
+
+ pr_debug("%s: leave, micb_enable: %d\n", __func__,
+ mbhc->micbias_enable);
+ return ret;
+}
+
+static void wcd_mbhc_update_fsm_source(struct wcd_mbhc *mbhc,
+ enum wcd_mbhc_plug_type plug_type)
+{
+ bool micbias2;
+
+ micbias2 = mbhc->mbhc_cb->micbias_enable_status(mbhc,
+ MIC_BIAS_2);
+ switch (plug_type) {
+ case MBHC_PLUG_TYPE_HEADPHONE:
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_BTN_ISRC_CTL, 3);
+ break;
+ case MBHC_PLUG_TYPE_HEADSET:
+ case MBHC_PLUG_TYPE_ANC_HEADPHONE:
+ if (!mbhc->is_hs_recording && !micbias2)
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_BTN_ISRC_CTL, 3);
+ break;
+ default:
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_BTN_ISRC_CTL, 0);
+ break;
+
+ };
+}
+
+static void wcd_enable_mbhc_supply(struct wcd_mbhc *mbhc,
+ enum wcd_mbhc_plug_type plug_type)
+{
+
+ struct snd_soc_codec *codec = mbhc->codec;
+
+ /*
+ * Do not disable micbias if recording is going on or
+ * headset is inserted on the other side of the extn
+ * cable. If headset has been detected current source
+ * needs to be kept enabled for button detection to work.
+ * If the accessory type is invalid or unsupported, we
+ * dont need to enable either of them.
+ */
+ if (det_extn_cable_en && mbhc->is_extn_cable &&
+ mbhc->mbhc_cb && mbhc->mbhc_cb->extn_use_mb &&
+ mbhc->mbhc_cb->extn_use_mb(codec)) {
+ if (plug_type == MBHC_PLUG_TYPE_HEADPHONE ||
+ plug_type == MBHC_PLUG_TYPE_HEADSET)
+ wcd_enable_curr_micbias(mbhc, WCD_MBHC_EN_MB);
+ } else {
+ if (plug_type == MBHC_PLUG_TYPE_HEADSET) {
+ if (mbhc->is_hs_recording || mbhc->micbias_enable)
+ wcd_enable_curr_micbias(mbhc,
+ WCD_MBHC_EN_MB);
+ else if ((test_bit(WCD_MBHC_EVENT_PA_HPHL,
+ &mbhc->event_state)) ||
+ (test_bit(WCD_MBHC_EVENT_PA_HPHR,
+ &mbhc->event_state)))
+ wcd_enable_curr_micbias(mbhc,
+ WCD_MBHC_EN_PULLUP);
+ else
+ wcd_enable_curr_micbias(mbhc,
+ WCD_MBHC_EN_CS);
+ } else if (plug_type == MBHC_PLUG_TYPE_HEADPHONE) {
+ wcd_enable_curr_micbias(mbhc, WCD_MBHC_EN_CS);
+ } else {
+ wcd_enable_curr_micbias(mbhc, WCD_MBHC_EN_NONE);
+ }
+ }
+}
+
+static bool wcd_mbhc_check_for_spl_headset(struct wcd_mbhc *mbhc,
+ int *spl_hs_cnt)
+{
+ u16 hs_comp_res_1_8v = 0, hs_comp_res_2_7v = 0;
+ bool spl_hs = false;
+
+ if (!mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic)
+ goto exit;
+
+ /* Read back hs_comp_res @ 1.8v Micbias */
+ WCD_MBHC_REG_READ(WCD_MBHC_HS_COMP_RESULT, hs_comp_res_1_8v);
+ if (!hs_comp_res_1_8v) {
+ spl_hs = false;
+ goto exit;
+ }
+
+ /* Bump up MB2 to 2.7v */
+ mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic(mbhc->codec,
+ mbhc->mbhc_cfg->mbhc_micbias, true);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_FSM_EN, 0);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_FSM_EN, 1);
+ usleep_range(10000, 10100);
+
+ /* Read back HS_COMP_RESULT */
+ WCD_MBHC_REG_READ(WCD_MBHC_HS_COMP_RESULT, hs_comp_res_2_7v);
+ if (!hs_comp_res_2_7v && hs_comp_res_1_8v)
+ spl_hs = true;
+
+ if (spl_hs && spl_hs_cnt)
+ *spl_hs_cnt += 1;
+
+ /* MB2 back to 1.8v */
+ if (*spl_hs_cnt != WCD_MBHC_SPL_HS_CNT) {
+ mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic(mbhc->codec,
+ mbhc->mbhc_cfg->mbhc_micbias, false);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_FSM_EN, 0);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_FSM_EN, 1);
+ usleep_range(10000, 10100);
+ }
+
+ if (spl_hs)
+ pr_debug("%s: Detected special HS (%d)\n", __func__, spl_hs);
+
+exit:
+ return spl_hs;
+}
+
+static void wcd_correct_swch_plug(struct work_struct *work)
+{
+ struct wcd_mbhc *mbhc;
+ struct snd_soc_codec *codec;
+ enum wcd_mbhc_plug_type plug_type = MBHC_PLUG_TYPE_INVALID;
+ unsigned long timeout;
+ u16 hs_comp_res = 0, hphl_sch = 0, mic_sch = 0, btn_result = 0;
+ bool wrk_complete = false;
+ int pt_gnd_mic_swap_cnt = 0;
+ int no_gnd_mic_swap_cnt = 0;
+ bool is_pa_on = false, spl_hs = false;
+ bool micbias2 = false;
+ bool micbias1 = false;
+ int ret = 0;
+ int rc, spl_hs_count = 0;
+
+ pr_debug("%s: enter\n", __func__);
+
+ mbhc = container_of(work, struct wcd_mbhc, correct_plug_swch);
+ codec = mbhc->codec;
+
+ /*
+ * Enable micbias/pullup for detection in correct work.
+ * This work will get scheduled from detect_plug_type which
+ * will already request for pullup/micbias. If the pullup/micbias
+ * is handled with ref-counts by individual codec drivers, there is
+ * no need to enabale micbias/pullup here
+ */
+
+ wcd_enable_curr_micbias(mbhc, WCD_MBHC_EN_MB);
+
+
+ if (mbhc->current_plug == MBHC_PLUG_TYPE_GND_MIC_SWAP) {
+ mbhc->current_plug = MBHC_PLUG_TYPE_NONE;
+ goto correct_plug_type;
+ }
+
+ /* Enable HW FSM */
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_FSM_EN, 1);
+ /*
+ * Check for any button press interrupts before starting 3-sec
+ * loop.
+ */
+ rc = wait_for_completion_timeout(&mbhc->btn_press_compl,
+ msecs_to_jiffies(WCD_MBHC_BTN_PRESS_COMPL_TIMEOUT_MS));
+
+ WCD_MBHC_REG_READ(WCD_MBHC_BTN_RESULT, btn_result);
+ WCD_MBHC_REG_READ(WCD_MBHC_HS_COMP_RESULT, hs_comp_res);
+
+ if (!rc) {
+ pr_debug("%s No btn press interrupt\n", __func__);
+ if (!btn_result && !hs_comp_res)
+ plug_type = MBHC_PLUG_TYPE_HEADSET;
+ else if (!btn_result && hs_comp_res)
+ plug_type = MBHC_PLUG_TYPE_HIGH_HPH;
+ else
+ plug_type = MBHC_PLUG_TYPE_INVALID;
+ } else {
+ if (!btn_result && !hs_comp_res)
+ plug_type = MBHC_PLUG_TYPE_HEADPHONE;
+ else
+ plug_type = MBHC_PLUG_TYPE_INVALID;
+ }
+
+ pr_debug("%s: Valid plug found, plug type is %d\n",
+ __func__, plug_type);
+ if ((plug_type == MBHC_PLUG_TYPE_HEADSET ||
+ plug_type == MBHC_PLUG_TYPE_HEADPHONE) &&
+ (!wcd_swch_level_remove(mbhc))) {
+ WCD_MBHC_RSC_LOCK(mbhc);
+ wcd_mbhc_find_plug_and_report(mbhc, plug_type);
+ WCD_MBHC_RSC_UNLOCK(mbhc);
+ }
+
+correct_plug_type:
+
+ timeout = jiffies + msecs_to_jiffies(HS_DETECT_PLUG_TIME_MS);
+ while (!time_after(jiffies, timeout)) {
+ if (mbhc->hs_detect_work_stop) {
+ pr_debug("%s: stop requested: %d\n", __func__,
+ mbhc->hs_detect_work_stop);
+ wcd_enable_curr_micbias(mbhc,
+ WCD_MBHC_EN_NONE);
+ if (mbhc->micbias_enable) {
+ mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic(
+ mbhc->codec, MIC_BIAS_2, false);
+ if (mbhc->mbhc_cb->set_micbias_value)
+ mbhc->mbhc_cb->set_micbias_value(
+ mbhc->codec);
+ mbhc->micbias_enable = false;
+ }
+ goto exit;
+ }
+ if (mbhc->btn_press_intr) {
+ wcd_cancel_btn_work(mbhc);
+ mbhc->btn_press_intr = false;
+ }
+ /* Toggle FSM */
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_FSM_EN, 0);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_FSM_EN, 1);
+
+ /* allow sometime and re-check stop requested again */
+ msleep(20);
+ if (mbhc->hs_detect_work_stop) {
+ pr_debug("%s: stop requested: %d\n", __func__,
+ mbhc->hs_detect_work_stop);
+ wcd_enable_curr_micbias(mbhc,
+ WCD_MBHC_EN_NONE);
+ if (mbhc->micbias_enable) {
+ mbhc->mbhc_cb->mbhc_micb_ctrl_thr_mic(
+ mbhc->codec, MIC_BIAS_2, false);
+ if (mbhc->mbhc_cb->set_micbias_value)
+ mbhc->mbhc_cb->set_micbias_value(
+ mbhc->codec);
+ mbhc->micbias_enable = false;
+ }
+ goto exit;
+ }
+ WCD_MBHC_REG_READ(WCD_MBHC_HS_COMP_RESULT, hs_comp_res);
+
+ pr_debug("%s: hs_comp_res: %x\n", __func__, hs_comp_res);
+ if (mbhc->mbhc_cb->hph_pa_on_status)
+ is_pa_on = mbhc->mbhc_cb->hph_pa_on_status(codec);
+
+ /*
+ * instead of hogging system by contineous polling, wait for
+ * sometime and re-check stop request again.
+ */
+ msleep(180);
+ if (hs_comp_res && (spl_hs_count < WCD_MBHC_SPL_HS_CNT)) {
+ spl_hs = wcd_mbhc_check_for_spl_headset(mbhc,
+ &spl_hs_count);
+
+ if (spl_hs_count == WCD_MBHC_SPL_HS_CNT) {
+ hs_comp_res = 0;
+ spl_hs = true;
+ mbhc->micbias_enable = true;
+ }
+ }
+
+ if ((!hs_comp_res) && (!is_pa_on)) {
+ /* Check for cross connection*/
+ ret = wcd_check_cross_conn(mbhc);
+ if (ret < 0) {
+ continue;
+ } else if (ret > 0) {
+ pt_gnd_mic_swap_cnt++;
+ no_gnd_mic_swap_cnt = 0;
+ if (pt_gnd_mic_swap_cnt <
+ GND_MIC_SWAP_THRESHOLD) {
+ continue;
+ } else if (pt_gnd_mic_swap_cnt >
+ GND_MIC_SWAP_THRESHOLD) {
+ /*
+ * This is due to GND/MIC switch didn't
+ * work, Report unsupported plug.
+ */
+ pr_debug("%s: switch did not work\n",
+ __func__);
+ plug_type = MBHC_PLUG_TYPE_GND_MIC_SWAP;
+ goto report;
+ } else {
+ plug_type = MBHC_PLUG_TYPE_GND_MIC_SWAP;
+ }
+ } else {
+ no_gnd_mic_swap_cnt++;
+ pt_gnd_mic_swap_cnt = 0;
+ plug_type = MBHC_PLUG_TYPE_HEADSET;
+ if ((no_gnd_mic_swap_cnt <
+ GND_MIC_SWAP_THRESHOLD) &&
+ (spl_hs_count != WCD_MBHC_SPL_HS_CNT)) {
+ continue;
+ } else {
+ no_gnd_mic_swap_cnt = 0;
+ }
+ }
+ if ((pt_gnd_mic_swap_cnt == GND_MIC_SWAP_THRESHOLD) &&
+ (plug_type == MBHC_PLUG_TYPE_GND_MIC_SWAP)) {
+ /*
+ * if switch is toggled, check again,
+ * otherwise report unsupported plug
+ */
+ if (mbhc->mbhc_cfg->swap_gnd_mic &&
+ mbhc->mbhc_cfg->swap_gnd_mic(codec)) {
+ pr_debug("%s: US_EU gpio present,flip switch\n"
+ , __func__);
+ continue;
+ }
+ }
+ }
+
+ WCD_MBHC_REG_READ(WCD_MBHC_HPHL_SCHMT_RESULT, hphl_sch);
+ WCD_MBHC_REG_READ(WCD_MBHC_MIC_SCHMT_RESULT, mic_sch);
+ if (hs_comp_res && !(hphl_sch || mic_sch)) {
+ pr_debug("%s: cable is extension cable\n", __func__);
+ plug_type = MBHC_PLUG_TYPE_HIGH_HPH;
+ wrk_complete = true;
+ } else {
+ pr_debug("%s: cable might be headset: %d\n", __func__,
+ plug_type);
+ if (!(plug_type == MBHC_PLUG_TYPE_GND_MIC_SWAP)) {
+ plug_type = MBHC_PLUG_TYPE_HEADSET;
+ /*
+ * Report headset only if not already reported
+ * and if there is not button press without
+ * release
+ */
+ if (((mbhc->current_plug !=
+ MBHC_PLUG_TYPE_HEADSET) &&
+ (mbhc->current_plug !=
+ MBHC_PLUG_TYPE_ANC_HEADPHONE)) &&
+ !wcd_swch_level_remove(mbhc) &&
+ !mbhc->btn_press_intr) {
+ pr_debug("%s: cable is %sheadset\n",
+ __func__,
+ ((spl_hs_count ==
+ WCD_MBHC_SPL_HS_CNT) ?
+ "special ":""));
+ goto report;
+ }
+ }
+ wrk_complete = false;
+ }
+ }
+ if (!wrk_complete && mbhc->btn_press_intr) {
+ pr_debug("%s: Can be slow insertion of headphone\n", __func__);
+ wcd_cancel_btn_work(mbhc);
+ plug_type = MBHC_PLUG_TYPE_HEADPHONE;
+ }
+ /*
+ * If plug_tye is headset, we might have already reported either in
+ * detect_plug-type or in above while loop, no need to report again
+ */
+ if (!wrk_complete && ((plug_type == MBHC_PLUG_TYPE_HEADSET) ||
+ (plug_type == MBHC_PLUG_TYPE_ANC_HEADPHONE))) {
+ pr_debug("%s: plug_type:0x%x already reported\n",
+ __func__, mbhc->current_plug);
+ goto enable_supply;
+ }
+
+ if (plug_type == MBHC_PLUG_TYPE_HIGH_HPH &&
+ (!det_extn_cable_en)) {
+ if (wcd_is_special_headset(mbhc)) {
+ pr_debug("%s: Special headset found %d\n",
+ __func__, plug_type);
+ plug_type = MBHC_PLUG_TYPE_HEADSET;
+ goto report;
+ }
+ }
+
+report:
+ if (wcd_swch_level_remove(mbhc)) {
+ pr_debug("%s: Switch level is low\n", __func__);
+ goto exit;
+ }
+ if (plug_type == MBHC_PLUG_TYPE_GND_MIC_SWAP && mbhc->btn_press_intr) {
+ pr_debug("%s: insertion of headphone with swap\n", __func__);
+ wcd_cancel_btn_work(mbhc);
+ plug_type = MBHC_PLUG_TYPE_HEADPHONE;
+ }
+ pr_debug("%s: Valid plug found, plug type %d wrk_cmpt %d btn_intr %d\n",
+ __func__, plug_type, wrk_complete,
+ mbhc->btn_press_intr);
+ WCD_MBHC_RSC_LOCK(mbhc);
+ wcd_mbhc_find_plug_and_report(mbhc, plug_type);
+ WCD_MBHC_RSC_UNLOCK(mbhc);
+enable_supply:
+ if (mbhc->mbhc_cb->mbhc_micbias_control)
+ wcd_mbhc_update_fsm_source(mbhc, plug_type);
+ else
+ wcd_enable_mbhc_supply(mbhc, plug_type);
+exit:
+ if (mbhc->mbhc_cb->mbhc_micbias_control &&
+ !mbhc->micbias_enable)
+ mbhc->mbhc_cb->mbhc_micbias_control(codec, MIC_BIAS_2,
+ MICB_DISABLE);
+ if (mbhc->mbhc_cb->micbias_enable_status) {
+ micbias1 = mbhc->mbhc_cb->micbias_enable_status(mbhc,
+ MIC_BIAS_1);
+ micbias2 = mbhc->mbhc_cb->micbias_enable_status(mbhc,
+ MIC_BIAS_2);
+ }
+
+ if (mbhc->mbhc_cfg->detect_extn_cable &&
+ ((plug_type == MBHC_PLUG_TYPE_HEADPHONE) ||
+ (plug_type == MBHC_PLUG_TYPE_HEADSET)) &&
+ !mbhc->hs_detect_work_stop) {
+ WCD_MBHC_RSC_LOCK(mbhc);
+ wcd_mbhc_hs_elec_irq(mbhc, WCD_MBHC_ELEC_HS_REM, true);
+ WCD_MBHC_RSC_UNLOCK(mbhc);
+ }
+ if (mbhc->mbhc_cb->set_cap_mode)
+ mbhc->mbhc_cb->set_cap_mode(codec, micbias1, micbias2);
+
+ if (mbhc->mbhc_cb->hph_pull_down_ctrl)
+ mbhc->mbhc_cb->hph_pull_down_ctrl(codec, true);
+
+ mbhc->mbhc_cb->lock_sleep(mbhc, false);
+ pr_debug("%s: leave\n", __func__);
+}
+
+/* called under codec_resource_lock acquisition */
+static void wcd_mbhc_detect_plug_type(struct wcd_mbhc *mbhc)
+{
+ struct snd_soc_codec *codec = mbhc->codec;
+ enum wcd_mbhc_plug_type plug_type;
+ bool micbias1 = false;
+ int cross_conn;
+ int try = 0;
+
+ pr_debug("%s: enter\n", __func__);
+ WCD_MBHC_RSC_ASSERT_LOCKED(mbhc);
+
+ if (mbhc->mbhc_cb->hph_pull_down_ctrl)
+ mbhc->mbhc_cb->hph_pull_down_ctrl(codec, false);
+
+ if (mbhc->mbhc_cb->micbias_enable_status)
+ micbias1 = mbhc->mbhc_cb->micbias_enable_status(mbhc,
+ MIC_BIAS_1);
+
+ if (mbhc->mbhc_cb->set_cap_mode)
+ mbhc->mbhc_cb->set_cap_mode(codec, micbias1, true);
+
+ if (mbhc->mbhc_cb->mbhc_micbias_control)
+ mbhc->mbhc_cb->mbhc_micbias_control(codec, MIC_BIAS_2,
+ MICB_ENABLE);
+ else
+ wcd_enable_curr_micbias(mbhc, WCD_MBHC_EN_MB);
+
+ do {
+ cross_conn = wcd_check_cross_conn(mbhc);
+ try++;
+ } while (try < GND_MIC_SWAP_THRESHOLD);
+
+ if (cross_conn > 0) {
+ pr_debug("%s: cross con found, start polling\n",
+ __func__);
+ plug_type = MBHC_PLUG_TYPE_GND_MIC_SWAP;
+ if (!mbhc->current_plug)
+ mbhc->current_plug = plug_type;
+ pr_debug("%s: Plug found, plug type is %d\n",
+ __func__, plug_type);
+ }
+
+ /* Re-initialize button press completion object */
+ reinit_completion(&mbhc->btn_press_compl);
+ wcd_schedule_hs_detect_plug(mbhc, &mbhc->correct_plug_swch);
+ pr_debug("%s: leave\n", __func__);
+}
+
+static void wcd_mbhc_swch_irq_handler(struct wcd_mbhc *mbhc)
+{
+ bool detection_type = 0;
+ bool micbias1 = false;
+ struct snd_soc_codec *codec = mbhc->codec;
+
+ dev_dbg(codec->dev, "%s: enter\n", __func__);
+
+ WCD_MBHC_RSC_LOCK(mbhc);
+
+ mbhc->in_swch_irq_handler = true;
+
+ /* cancel pending button press */
+ if (wcd_cancel_btn_work(mbhc))
+ pr_debug("%s: button press is canceled\n", __func__);
+
+ WCD_MBHC_REG_READ(WCD_MBHC_MECH_DETECTION_TYPE, detection_type);
+
+ /* Set the detection type appropriately */
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_MECH_DETECTION_TYPE,
+ !detection_type);
+
+ pr_debug("%s: mbhc->current_plug: %d detection_type: %d\n", __func__,
+ mbhc->current_plug, detection_type);
+ wcd_cancel_hs_detect_plug(mbhc, &mbhc->correct_plug_swch);
+
+ if (mbhc->mbhc_cb->micbias_enable_status)
+ micbias1 = mbhc->mbhc_cb->micbias_enable_status(mbhc,
+ MIC_BIAS_1);
+
+ if ((mbhc->current_plug == MBHC_PLUG_TYPE_NONE) &&
+ detection_type) {
+ /* Make sure MASTER_BIAS_CTL is enabled */
+ mbhc->mbhc_cb->mbhc_bias(codec, true);
+
+ if (mbhc->mbhc_cb->mbhc_common_micb_ctrl)
+ mbhc->mbhc_cb->mbhc_common_micb_ctrl(codec,
+ MBHC_COMMON_MICB_TAIL_CURR, true);
+
+ if (!mbhc->mbhc_cfg->hs_ext_micbias &&
+ mbhc->mbhc_cb->micb_internal)
+ /*
+ * Enable Tx2 RBias if the headset
+ * is using internal micbias
+ */
+ mbhc->mbhc_cb->micb_internal(codec, 1, true);
+
+ /* Remove micbias pulldown */
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_PULLDOWN_CTRL, 0);
+ /* Apply trim if needed on the device */
+ if (mbhc->mbhc_cb->trim_btn_reg)
+ mbhc->mbhc_cb->trim_btn_reg(codec);
+ /* Enable external voltage source to micbias if present */
+ if (mbhc->mbhc_cb->enable_mb_source)
+ mbhc->mbhc_cb->enable_mb_source(mbhc, true);
+ mbhc->btn_press_intr = false;
+ wcd_mbhc_detect_plug_type(mbhc);
+ } else if ((mbhc->current_plug != MBHC_PLUG_TYPE_NONE)
+ && !detection_type) {
+ /* Disable external voltage source to micbias if present */
+ if (mbhc->mbhc_cb->enable_mb_source)
+ mbhc->mbhc_cb->enable_mb_source(mbhc, false);
+ /* Disable HW FSM */
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_FSM_EN, 0);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_BTN_ISRC_CTL, 0);
+ if (mbhc->mbhc_cb->mbhc_common_micb_ctrl)
+ mbhc->mbhc_cb->mbhc_common_micb_ctrl(codec,
+ MBHC_COMMON_MICB_TAIL_CURR, false);
+
+ if (mbhc->mbhc_cb->set_cap_mode)
+ mbhc->mbhc_cb->set_cap_mode(codec, micbias1, false);
+
+ mbhc->btn_press_intr = false;
+ if (mbhc->current_plug == MBHC_PLUG_TYPE_HEADPHONE) {
+ wcd_mbhc_hs_elec_irq(mbhc, WCD_MBHC_ELEC_HS_REM,
+ false);
+ wcd_mbhc_hs_elec_irq(mbhc, WCD_MBHC_ELEC_HS_INS,
+ false);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_ELECT_DETECTION_TYPE,
+ 1);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_ELECT_SCHMT_ISRC, 0);
+ wcd_mbhc_report_plug(mbhc, 0, SND_JACK_HEADPHONE);
+ } else if (mbhc->current_plug == MBHC_PLUG_TYPE_GND_MIC_SWAP) {
+ wcd_mbhc_report_plug(mbhc, 0, SND_JACK_UNSUPPORTED);
+ } else if (mbhc->current_plug == MBHC_PLUG_TYPE_HEADSET) {
+ /* make sure to turn off Rbias */
+ if (mbhc->mbhc_cb->micb_internal)
+ mbhc->mbhc_cb->micb_internal(codec, 1, false);
+
+ /* Pulldown micbias */
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_PULLDOWN_CTRL, 1);
+ wcd_mbhc_hs_elec_irq(mbhc, WCD_MBHC_ELEC_HS_REM,
+ false);
+ wcd_mbhc_hs_elec_irq(mbhc, WCD_MBHC_ELEC_HS_INS,
+ false);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_ELECT_DETECTION_TYPE,
+ 1);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_ELECT_SCHMT_ISRC, 0);
+ wcd_mbhc_report_plug(mbhc, 0, SND_JACK_HEADSET);
+ } else if (mbhc->current_plug == MBHC_PLUG_TYPE_HIGH_HPH) {
+ mbhc->is_extn_cable = false;
+ wcd_mbhc_hs_elec_irq(mbhc, WCD_MBHC_ELEC_HS_REM,
+ false);
+ wcd_mbhc_hs_elec_irq(mbhc, WCD_MBHC_ELEC_HS_INS,
+ false);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_ELECT_DETECTION_TYPE,
+ 1);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_ELECT_SCHMT_ISRC, 0);
+ wcd_mbhc_report_plug(mbhc, 0, SND_JACK_LINEOUT);
+ } else if (mbhc->current_plug == MBHC_PLUG_TYPE_ANC_HEADPHONE) {
+ mbhc->mbhc_cb->irq_control(codec,
+ mbhc->intr_ids->mbhc_hs_rem_intr,
+ false);
+ mbhc->mbhc_cb->irq_control(codec,
+ mbhc->intr_ids->mbhc_hs_ins_intr,
+ false);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_ELECT_DETECTION_TYPE,
+ 0);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_ELECT_SCHMT_ISRC, 0);
+ wcd_mbhc_report_plug(mbhc, 0, SND_JACK_ANC_HEADPHONE);
+ }
+ } else if (!detection_type) {
+ /* Disable external voltage source to micbias if present */
+ if (mbhc->mbhc_cb->enable_mb_source)
+ mbhc->mbhc_cb->enable_mb_source(mbhc, false);
+ /* Disable HW FSM */
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_FSM_EN, 0);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_BTN_ISRC_CTL, 0);
+ }
+
+ mbhc->in_swch_irq_handler = false;
+ WCD_MBHC_RSC_UNLOCK(mbhc);
+ pr_debug("%s: leave\n", __func__);
+}
+
+static irqreturn_t wcd_mbhc_mech_plug_detect_irq(int irq, void *data)
+{
+ int r = IRQ_HANDLED;
+ struct wcd_mbhc *mbhc = data;
+
+ pr_debug("%s: enter\n", __func__);
+ if (unlikely((mbhc->mbhc_cb->lock_sleep(mbhc, true)) == false)) {
+ pr_warn("%s: failed to hold suspend\n", __func__);
+ r = IRQ_NONE;
+ } else {
+ /* Call handler */
+ wcd_mbhc_swch_irq_handler(mbhc);
+ mbhc->mbhc_cb->lock_sleep(mbhc, false);
+ }
+ pr_debug("%s: leave %d\n", __func__, r);
+ return r;
+}
+
+static int wcd_mbhc_get_button_mask(struct wcd_mbhc *mbhc)
+{
+ int mask = 0;
+ int btn;
+
+ btn = mbhc->mbhc_cb->map_btn_code_to_num(mbhc->codec);
+
+ 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 irqreturn_t wcd_mbhc_hs_ins_irq(int irq, void *data)
+{
+ struct wcd_mbhc *mbhc = data;
+ bool detection_type = 0, hphl_sch = 0, mic_sch = 0;
+ u16 elect_result = 0;
+ static u16 hphl_trigerred;
+ static u16 mic_trigerred;
+
+ pr_debug("%s: enter\n", __func__);
+ if (!mbhc->mbhc_cfg->detect_extn_cable) {
+ pr_debug("%s: Returning as Extension cable feature not enabled\n",
+ __func__);
+ return IRQ_HANDLED;
+ }
+ WCD_MBHC_RSC_LOCK(mbhc);
+
+ WCD_MBHC_REG_READ(WCD_MBHC_ELECT_DETECTION_TYPE, detection_type);
+ WCD_MBHC_REG_READ(WCD_MBHC_ELECT_RESULT, elect_result);
+
+ pr_debug("%s: detection_type %d, elect_result %x\n", __func__,
+ detection_type, elect_result);
+ if (detection_type) {
+ /* check if both Left and MIC Schmitt triggers are triggered */
+ WCD_MBHC_REG_READ(WCD_MBHC_HPHL_SCHMT_RESULT, hphl_sch);
+ WCD_MBHC_REG_READ(WCD_MBHC_MIC_SCHMT_RESULT, mic_sch);
+ if (hphl_sch && mic_sch) {
+ /* Go for plug type determination */
+ pr_debug("%s: Go for plug type determination\n",
+ __func__);
+ goto determine_plug;
+
+ } else {
+ if (mic_sch) {
+ mic_trigerred++;
+ pr_debug("%s: Insertion MIC trigerred %d\n",
+ __func__, mic_trigerred);
+ WCD_MBHC_REG_UPDATE_BITS(
+ WCD_MBHC_ELECT_SCHMT_ISRC,
+ 0);
+ msleep(20);
+ WCD_MBHC_REG_UPDATE_BITS(
+ WCD_MBHC_ELECT_SCHMT_ISRC,
+ 1);
+ }
+ if (hphl_sch) {
+ hphl_trigerred++;
+ pr_debug("%s: Insertion HPHL trigerred %d\n",
+ __func__, hphl_trigerred);
+ }
+ if (mic_trigerred && hphl_trigerred) {
+ /* Go for plug type determination */
+ pr_debug("%s: Go for plug type determination\n",
+ __func__);
+ goto determine_plug;
+ }
+ }
+ }
+ WCD_MBHC_RSC_UNLOCK(mbhc);
+ pr_debug("%s: leave\n", __func__);
+ return IRQ_HANDLED;
+
+determine_plug:
+ /*
+ * Disable HPHL trigger and MIC Schmitt triggers.
+ * Setup for insertion detection.
+ */
+ pr_debug("%s: Disable insertion interrupt\n", __func__);
+ wcd_mbhc_hs_elec_irq(mbhc, WCD_MBHC_ELEC_HS_INS,
+ false);
+
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_ELECT_SCHMT_ISRC, 0);
+ hphl_trigerred = 0;
+ mic_trigerred = 0;
+ mbhc->is_extn_cable = true;
+ mbhc->btn_press_intr = false;
+ wcd_mbhc_detect_plug_type(mbhc);
+ WCD_MBHC_RSC_UNLOCK(mbhc);
+ pr_debug("%s: leave\n", __func__);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t wcd_mbhc_hs_rem_irq(int irq, void *data)
+{
+ struct wcd_mbhc *mbhc = data;
+ u8 hs_comp_result = 0, hphl_sch = 0, mic_sch = 0;
+ static u16 hphl_trigerred;
+ static u16 mic_trigerred;
+ unsigned long timeout;
+ bool removed = true;
+ int retry = 0;
+
+ pr_debug("%s: enter\n", __func__);
+
+ WCD_MBHC_RSC_LOCK(mbhc);
+
+ timeout = jiffies +
+ msecs_to_jiffies(WCD_FAKE_REMOVAL_MIN_PERIOD_MS);
+ do {
+ retry++;
+ /*
+ * read the result register every 10ms to look for
+ * any change in HS_COMP_RESULT bit
+ */
+ usleep_range(10000, 10100);
+ WCD_MBHC_REG_READ(WCD_MBHC_HS_COMP_RESULT, hs_comp_result);
+ pr_debug("%s: Check result reg for fake removal: hs_comp_res %x\n",
+ __func__, hs_comp_result);
+ if ((!hs_comp_result) &&
+ retry > FAKE_REM_RETRY_ATTEMPTS) {
+ removed = false;
+ break;
+ }
+ } while (!time_after(jiffies, timeout));
+
+ if (wcd_swch_level_remove(mbhc)) {
+ pr_debug("%s: Switch level is low ", __func__);
+ goto exit;
+ }
+ pr_debug("%s: headset %s actually removed\n", __func__,
+ removed ? "" : "not ");
+
+ WCD_MBHC_REG_READ(WCD_MBHC_HPHL_SCHMT_RESULT, hphl_sch);
+ WCD_MBHC_REG_READ(WCD_MBHC_MIC_SCHMT_RESULT, mic_sch);
+ WCD_MBHC_REG_READ(WCD_MBHC_HS_COMP_RESULT, hs_comp_result);
+
+ if (removed) {
+ if (!(hphl_sch && mic_sch && hs_comp_result)) {
+ /*
+ * extension cable is still plugged in
+ * report it as LINEOUT device
+ */
+ goto report_unplug;
+ } else {
+ if (!mic_sch) {
+ mic_trigerred++;
+ pr_debug("%s: Removal MIC trigerred %d\n",
+ __func__, mic_trigerred);
+ }
+ if (!hphl_sch) {
+ hphl_trigerred++;
+ pr_debug("%s: Removal HPHL trigerred %d\n",
+ __func__, hphl_trigerred);
+ }
+ if (mic_trigerred && hphl_trigerred) {
+ /*
+ * extension cable is still plugged in
+ * report it as LINEOUT device
+ */
+ goto report_unplug;
+ }
+ }
+ }
+exit:
+ WCD_MBHC_RSC_UNLOCK(mbhc);
+ pr_debug("%s: leave\n", __func__);
+ return IRQ_HANDLED;
+
+report_unplug:
+
+ /* cancel pending button press */
+ if (wcd_cancel_btn_work(mbhc))
+ pr_debug("%s: button press is canceled\n", __func__);
+ /* cancel correct work function */
+ wcd_cancel_hs_detect_plug(mbhc, &mbhc->correct_plug_swch);
+
+ pr_debug("%s: Report extension cable\n", __func__);
+ wcd_mbhc_report_plug(mbhc, 1, SND_JACK_LINEOUT);
+ /*
+ * If PA is enabled HPHL schmitt trigger can
+ * be unreliable, make sure to disable it
+ */
+ if (test_bit(WCD_MBHC_EVENT_PA_HPHL,
+ &mbhc->event_state))
+ wcd_mbhc_set_and_turnoff_hph_padac(mbhc);
+ /*
+ * Disable HPHL trigger and MIC Schmitt triggers.
+ * Setup for insertion detection.
+ */
+ wcd_mbhc_hs_elec_irq(mbhc, WCD_MBHC_ELEC_HS_REM,
+ false);
+ wcd_enable_curr_micbias(mbhc, WCD_MBHC_EN_NONE);
+ /* Disable HW FSM */
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_FSM_EN, 0);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_ELECT_SCHMT_ISRC, 3);
+
+ /* Set the detection type appropriately */
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_ELECT_DETECTION_TYPE, 1);
+ wcd_mbhc_hs_elec_irq(mbhc, WCD_MBHC_ELEC_HS_INS,
+ true);
+ hphl_trigerred = 0;
+ mic_trigerred = 0;
+ WCD_MBHC_RSC_UNLOCK(mbhc);
+ pr_debug("%s: leave\n", __func__);
+ return IRQ_HANDLED;
+}
+
+static void wcd_btn_lpress_fn(struct work_struct *work)
+{
+ struct delayed_work *dwork;
+ struct wcd_mbhc *mbhc;
+ s16 btn_result = 0;
+
+ pr_debug("%s: Enter\n", __func__);
+
+ dwork = to_delayed_work(work);
+ mbhc = container_of(dwork, struct wcd_mbhc, mbhc_btn_dwork);
+
+ WCD_MBHC_REG_READ(WCD_MBHC_BTN_RESULT, btn_result);
+ if (mbhc->current_plug == MBHC_PLUG_TYPE_HEADSET) {
+ pr_debug("%s: Reporting long button press event, btn_result: %d\n",
+ __func__, btn_result);
+ wcd_mbhc_jack_report(mbhc, &mbhc->button_jack,
+ mbhc->buttons_pressed, mbhc->buttons_pressed);
+ }
+ pr_debug("%s: leave\n", __func__);
+ mbhc->mbhc_cb->lock_sleep(mbhc, false);
+}
+
+static bool wcd_mbhc_fw_validate(const void *data, size_t size)
+{
+ u32 cfg_offset;
+ struct wcd_mbhc_btn_detect_cfg *btn_cfg;
+ struct firmware_cal fw;
+
+ fw.data = (void *)data;
+ fw.size = size;
+
+ if (fw.size < WCD_MBHC_CAL_MIN_SIZE)
+ return false;
+
+ /*
+ * Previous check guarantees that there is enough fw data up
+ * to num_btn
+ */
+ btn_cfg = WCD_MBHC_CAL_BTN_DET_PTR(fw.data);
+ cfg_offset = (u32) ((void *) btn_cfg - (void *) fw.data);
+ if (fw.size < (cfg_offset + WCD_MBHC_CAL_BTN_SZ(btn_cfg)))
+ return false;
+
+ return true;
+}
+
+static irqreturn_t wcd_mbhc_btn_press_handler(int irq, void *data)
+{
+ struct wcd_mbhc *mbhc = data;
+ int mask;
+ unsigned long msec_val;
+
+ pr_debug("%s: enter\n", __func__);
+ complete(&mbhc->btn_press_compl);
+ WCD_MBHC_RSC_LOCK(mbhc);
+ /* send event to sw intr handler*/
+ mbhc->is_btn_press = true;
+ wcd_cancel_btn_work(mbhc);
+ if (wcd_swch_level_remove(mbhc)) {
+ pr_debug("%s: Switch level is low ", __func__);
+ goto done;
+ }
+ mbhc->btn_press_intr = true;
+
+ msec_val = jiffies_to_msecs(jiffies - mbhc->jiffies_atreport);
+ pr_debug("%s: msec_val = %ld\n", __func__, msec_val);
+ if (msec_val < MBHC_BUTTON_PRESS_THRESHOLD_MIN) {
+ pr_debug("%s: Too short, ignore button press\n", __func__);
+ goto done;
+ }
+
+ /* If switch interrupt already kicked in, ignore button press */
+ if (mbhc->in_swch_irq_handler) {
+ pr_debug("%s: Swtich level changed, ignore button press\n",
+ __func__);
+ goto done;
+ }
+ if (mbhc->current_plug != MBHC_PLUG_TYPE_HEADSET) {
+ pr_debug("%s: Plug isn't headset, ignore button press\n",
+ __func__);
+ goto done;
+ }
+ mask = wcd_mbhc_get_button_mask(mbhc);
+ mbhc->buttons_pressed |= mask;
+ mbhc->mbhc_cb->lock_sleep(mbhc, true);
+ if (schedule_delayed_work(&mbhc->mbhc_btn_dwork,
+ msecs_to_jiffies(400)) == 0) {
+ WARN(1, "Button pressed twice without release event\n");
+ mbhc->mbhc_cb->lock_sleep(mbhc, false);
+ }
+done:
+ pr_debug("%s: leave\n", __func__);
+ WCD_MBHC_RSC_UNLOCK(mbhc);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t wcd_mbhc_release_handler(int irq, void *data)
+{
+ struct wcd_mbhc *mbhc = data;
+ int ret;
+
+ pr_debug("%s: enter\n", __func__);
+ WCD_MBHC_RSC_LOCK(mbhc);
+ if (wcd_swch_level_remove(mbhc)) {
+ pr_debug("%s: Switch level is low ", __func__);
+ goto exit;
+ }
+
+ if (mbhc->btn_press_intr) {
+ mbhc->btn_press_intr = false;
+ } else {
+ pr_debug("%s: This release is for fake btn press\n", __func__);
+ goto exit;
+ }
+
+ /*
+ * If current plug is headphone then there is no chance to
+ * get btn release interrupt, so connected cable should be
+ * headset not headphone.
+ */
+ if (mbhc->current_plug == MBHC_PLUG_TYPE_HEADPHONE) {
+ wcd_mbhc_find_plug_and_report(mbhc, MBHC_PLUG_TYPE_HEADSET);
+ goto exit;
+
+ }
+ if (mbhc->buttons_pressed & WCD_MBHC_JACK_BUTTON_MASK) {
+ ret = wcd_cancel_btn_work(mbhc);
+ if (ret == 0) {
+ pr_debug("%s: Reporting long button release event\n",
+ __func__);
+ wcd_mbhc_jack_report(mbhc, &mbhc->button_jack,
+ 0, mbhc->buttons_pressed);
+ } else {
+ if (mbhc->in_swch_irq_handler) {
+ pr_debug("%s: Switch irq kicked in, ignore\n",
+ __func__);
+ } else {
+ pr_debug("%s: Reporting btn press\n",
+ __func__);
+ wcd_mbhc_jack_report(mbhc,
+ &mbhc->button_jack,
+ mbhc->buttons_pressed,
+ mbhc->buttons_pressed);
+ pr_debug("%s: Reporting btn release\n",
+ __func__);
+ wcd_mbhc_jack_report(mbhc,
+ &mbhc->button_jack,
+ 0, mbhc->buttons_pressed);
+ }
+ }
+ mbhc->buttons_pressed &= ~WCD_MBHC_JACK_BUTTON_MASK;
+ }
+exit:
+ pr_debug("%s: leave\n", __func__);
+ WCD_MBHC_RSC_UNLOCK(mbhc);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t wcd_mbhc_hphl_ocp_irq(int irq, void *data)
+{
+ struct wcd_mbhc *mbhc = data;
+ int val;
+
+ pr_debug("%s: received HPHL OCP irq\n", __func__);
+ if (mbhc) {
+ if (mbhc->mbhc_cb->hph_register_recovery) {
+ if (mbhc->mbhc_cb->hph_register_recovery(mbhc)) {
+ WCD_MBHC_REG_READ(WCD_MBHC_HPHR_OCP_STATUS,
+ val);
+ if ((val != -EINVAL) && val)
+ mbhc->is_hph_ocp_pending = true;
+ goto done;
+ }
+ }
+
+ if (mbhc->hphlocp_cnt < OCP_ATTEMPT) {
+ mbhc->hphlocp_cnt++;
+ pr_debug("%s: retry, hphlocp_cnt: %d\n", __func__,
+ mbhc->hphlocp_cnt);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_OCP_FSM_EN, 0);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_OCP_FSM_EN, 1);
+ } else {
+ mbhc->mbhc_cb->irq_control(mbhc->codec,
+ mbhc->intr_ids->hph_left_ocp,
+ false);
+ mbhc->hph_status |= SND_JACK_OC_HPHL;
+ wcd_mbhc_jack_report(mbhc, &mbhc->headset_jack,
+ mbhc->hph_status,
+ WCD_MBHC_JACK_MASK);
+ }
+ } else {
+ pr_err("%s: Bad wcd9xxx_spmi private data\n", __func__);
+ }
+done:
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t wcd_mbhc_hphr_ocp_irq(int irq, void *data)
+{
+ struct wcd_mbhc *mbhc = data;
+
+ pr_debug("%s: received HPHR OCP irq\n", __func__);
+
+ if (!mbhc) {
+ pr_err("%s: Bad mbhc private data\n", __func__);
+ goto done;
+ }
+
+ if (mbhc->is_hph_ocp_pending) {
+ mbhc->is_hph_ocp_pending = false;
+ goto done;
+ }
+
+ if (mbhc->mbhc_cb->hph_register_recovery) {
+ if (mbhc->mbhc_cb->hph_register_recovery(mbhc))
+ /* register corruption, hence reset registers */
+ goto done;
+ }
+ if (mbhc->hphrocp_cnt < OCP_ATTEMPT) {
+ mbhc->hphrocp_cnt++;
+ pr_debug("%s: retry, hphrocp_cnt: %d\n", __func__,
+ mbhc->hphrocp_cnt);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_OCP_FSM_EN, 0);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_OCP_FSM_EN, 1);
+ } else {
+ mbhc->mbhc_cb->irq_control(mbhc->codec,
+ mbhc->intr_ids->hph_right_ocp,
+ false);
+ mbhc->hph_status |= SND_JACK_OC_HPHR;
+ wcd_mbhc_jack_report(mbhc, &mbhc->headset_jack,
+ mbhc->hph_status, WCD_MBHC_JACK_MASK);
+ }
+done:
+ return IRQ_HANDLED;
+}
+
+static int wcd_mbhc_initialise(struct wcd_mbhc *mbhc)
+{
+ int ret = 0;
+ struct snd_soc_codec *codec = mbhc->codec;
+
+ pr_debug("%s: enter\n", __func__);
+ WCD_MBHC_RSC_LOCK(mbhc);
+
+ /* enable HS detection */
+ if (mbhc->mbhc_cb->hph_pull_up_control)
+ mbhc->mbhc_cb->hph_pull_up_control(codec, I_DEFAULT);
+ else
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_HS_L_DET_PULL_UP_CTRL, 3);
+
+ if (mbhc->mbhc_cfg->moisture_en && mbhc->mbhc_cb->mbhc_moisture_config)
+ mbhc->mbhc_cb->mbhc_moisture_config(mbhc);
+
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_HPHL_PLUG_TYPE, mbhc->hphl_swh);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_GND_PLUG_TYPE, mbhc->gnd_swh);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_SW_HPH_LP_100K_TO_GND, 1);
+ if (mbhc->mbhc_cfg->gnd_det_en && mbhc->mbhc_cb->mbhc_gnd_det_ctrl)
+ mbhc->mbhc_cb->mbhc_gnd_det_ctrl(codec, true);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_HS_L_DET_PULL_UP_COMP_CTRL, 1);
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_L_DET_EN, 1);
+
+ /* Insertion debounce set to 96ms */
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_INSREM_DBNC, 6);
+ /* Button Debounce set to 16ms */
+ WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_BTN_DBNC, 2);
+
+ /* Enable micbias ramp */
+ if (mbhc->mbhc_cb->mbhc_micb_ramp_control)
+ mbhc->mbhc_cb->mbhc_micb_ramp_control(codec, true);
+ /* enable bias */
+ mbhc->mbhc_cb->mbhc_bias(codec, true);
+ /* enable MBHC clock */
+ if (mbhc->mbhc_cb->clk_setup)
+ mbhc->mbhc_cb->clk_setup(codec, true);
+
+ /* program HS_VREF value */
+ wcd_program_hs_vref(mbhc);
+
+ wcd_program_btn_threshold(mbhc, false);
+
+ INIT_WORK(&mbhc->correct_plug_swch, wcd_correct_swch_plug);
+
+ init_completion(&mbhc->btn_press_compl);
+
+ WCD_MBHC_RSC_UNLOCK(mbhc);
+ pr_debug("%s: leave\n", __func__);
+ return ret;
+}
+
+static void wcd_mbhc_fw_read(struct work_struct *work)
+{
+ struct delayed_work *dwork;
+ struct wcd_mbhc *mbhc;
+ struct snd_soc_codec *codec;
+ const struct firmware *fw;
+ struct firmware_cal *fw_data = NULL;
+ int ret = -1, retry = 0;
+ bool use_default_cal = false;
+
+ dwork = to_delayed_work(work);
+ mbhc = container_of(dwork, struct wcd_mbhc, mbhc_firmware_dwork);
+ codec = mbhc->codec;
+
+ while (retry < FW_READ_ATTEMPTS) {
+ retry++;
+ pr_debug("%s:Attempt %d to request MBHC firmware\n",
+ __func__, retry);
+ if (mbhc->mbhc_cb->get_hwdep_fw_cal)
+ fw_data = mbhc->mbhc_cb->get_hwdep_fw_cal(mbhc,
+ WCD9XXX_MBHC_CAL);
+ if (!fw_data)
+ ret = request_firmware(&fw, "wcd9320/wcd9320_mbhc.bin",
+ codec->dev);
+ /*
+ * if request_firmware and hwdep cal both fail then
+ * sleep for 4sec for the userspace to send data to kernel
+ * retry for few times before bailing out
+ */
+ if ((ret != 0) && !fw_data) {
+ usleep_range(FW_READ_TIMEOUT, FW_READ_TIMEOUT +
+ WCD_MBHC_USLEEP_RANGE_MARGIN_US);
+ } else {
+ pr_debug("%s: MBHC Firmware read successful\n",
+ __func__);
+ break;
+ }
+ }
+ if (!fw_data)
+ pr_debug("%s: using request_firmware\n", __func__);
+ else
+ pr_debug("%s: using hwdep cal\n", __func__);
+
+ if (ret != 0 && !fw_data) {
+ pr_err("%s: Cannot load MBHC firmware use default cal\n",
+ __func__);
+ use_default_cal = true;
+ }
+ if (!use_default_cal) {
+ const void *data;
+ size_t size;
+
+ if (fw_data) {
+ data = fw_data->data;
+ size = fw_data->size;
+ } else {
+ data = fw->data;
+ size = fw->size;
+ }
+ if (wcd_mbhc_fw_validate(data, size) == false) {
+ pr_err("%s: Invalid MBHC cal data size use default cal\n",
+ __func__);
+ if (!fw_data)
+ release_firmware(fw);
+ } else {
+ if (fw_data) {
+ mbhc->mbhc_cfg->calibration =
+ (void *)fw_data->data;
+ mbhc->mbhc_cal = fw_data;
+ } else {
+ mbhc->mbhc_cfg->calibration =
+ (void *)fw->data;
+ mbhc->mbhc_fw = fw;
+ }
+ }
+
+ }
+
+ (void) wcd_mbhc_initialise(mbhc);
+}
+
+int wcd_mbhc_set_keycode(struct wcd_mbhc *mbhc)
+{
+ enum snd_jack_types type;
+ int i, ret, result = 0;
+ int *btn_key_code;
+
+ btn_key_code = mbhc->mbhc_cfg->key_code;
+
+ for (i = 0 ; i < WCD_MBHC_KEYCODE_NUM ; i++) {
+ if (btn_key_code[i] != 0) {
+ switch (i) {
+ case 0:
+ type = SND_JACK_BTN_0;
+ break;
+ case 1:
+ type = SND_JACK_BTN_1;
+ break;
+ case 2:
+ type = SND_JACK_BTN_2;
+ break;
+ case 3:
+ type = SND_JACK_BTN_3;
+ break;
+ case 4:
+ type = SND_JACK_BTN_4;
+ break;
+ case 5:
+ type = SND_JACK_BTN_5;
+ break;
+ default:
+ WARN_ONCE(1, "Wrong button number:%d\n", i);
+ result = -1;
+ return result;
+ }
+ ret = snd_jack_set_key(mbhc->button_jack.jack,
+ type,
+ btn_key_code[i]);
+ if (ret) {
+ pr_err("%s: Failed to set code for %d\n",
+ __func__, btn_key_code[i]);
+ result = -1;
+ return result;
+ }
+ input_set_capability(
+ mbhc->button_jack.jack->input_dev,
+ EV_KEY, btn_key_code[i]);
+ pr_debug("%s: set btn%d key code:%d\n", __func__,
+ i, btn_key_code[i]);
+ }
+ }
+ if (btn_key_code[0])
+ mbhc->is_btn_already_regd = true;
+ return result;
+}
+
+int wcd_mbhc_start(struct wcd_mbhc *mbhc,
+ struct wcd_mbhc_config *mbhc_cfg)
+{
+ int rc = 0;
+
+ pr_debug("%s: enter\n", __func__);
+ /* update the mbhc config */
+ mbhc->mbhc_cfg = mbhc_cfg;
+
+ /* Set btn key code */
+ if ((!mbhc->is_btn_already_regd) && wcd_mbhc_set_keycode(mbhc))
+ pr_err("Set btn key code error!!!\n");
+
+ if (!mbhc->mbhc_cfg->read_fw_bin ||
+ (mbhc->mbhc_cfg->read_fw_bin && mbhc->mbhc_fw) ||
+ (mbhc->mbhc_cfg->read_fw_bin && mbhc->mbhc_cal)) {
+ rc = wcd_mbhc_initialise(mbhc);
+ } else {
+ if (!mbhc->mbhc_fw || !mbhc->mbhc_cal)
+ schedule_delayed_work(&mbhc->mbhc_firmware_dwork,
+ usecs_to_jiffies(FW_READ_TIMEOUT));
+ else
+ pr_err("%s: Skipping to read mbhc fw, 0x%pK %pK\n",
+ __func__, mbhc->mbhc_fw, mbhc->mbhc_cal);
+ }
+ pr_debug("%s: leave %d\n", __func__, rc);
+ return rc;
+}
+EXPORT_SYMBOL(wcd_mbhc_start);
+
+void wcd_mbhc_stop(struct wcd_mbhc *mbhc)
+{
+ pr_debug("%s: enter\n", __func__);
+ if (mbhc->current_plug != MBHC_PLUG_TYPE_NONE) {
+ if (mbhc->mbhc_cb && mbhc->mbhc_cb->skip_imped_detect)
+ mbhc->mbhc_cb->skip_imped_detect(mbhc->codec);
+ }
+ mbhc->current_plug = MBHC_PLUG_TYPE_NONE;
+ mbhc->hph_status = 0;
+ if (mbhc->mbhc_cb && mbhc->mbhc_cb->irq_control) {
+ mbhc->mbhc_cb->irq_control(mbhc->codec,
+ mbhc->intr_ids->hph_left_ocp,
+ false);
+ mbhc->mbhc_cb->irq_control(mbhc->codec,
+ mbhc->intr_ids->hph_right_ocp,
+ false);
+ }
+ if (mbhc->mbhc_fw || mbhc->mbhc_cal) {
+ cancel_delayed_work_sync(&mbhc->mbhc_firmware_dwork);
+ if (!mbhc->mbhc_cal)
+ release_firmware(mbhc->mbhc_fw);
+ mbhc->mbhc_fw = NULL;
+ mbhc->mbhc_cal = NULL;
+ }
+ pr_debug("%s: leave\n", __func__);
+}
+EXPORT_SYMBOL(wcd_mbhc_stop);
+
+/*
+ * wcd_mbhc_init : initialize MBHC internal structures.
+ *
+ * NOTE: mbhc->mbhc_cfg is not YET configure so shouldn't be used
+ */
+int wcd_mbhc_init(struct wcd_mbhc *mbhc, struct snd_soc_codec *codec,
+ const struct wcd_mbhc_cb *mbhc_cb,
+ const struct wcd_mbhc_intr *mbhc_cdc_intr_ids,
+ struct wcd_mbhc_register *wcd_mbhc_regs,
+ bool impedance_det_en)
+{
+ int ret = 0;
+ int hph_swh = 0;
+ int gnd_swh = 0;
+ struct snd_soc_card *card = codec->component.card;
+ const char *hph_switch = "qcom,msm-mbhc-hphl-swh";
+ const char *gnd_switch = "qcom,msm-mbhc-gnd-swh";
+
+ pr_debug("%s: enter\n", __func__);
+
+ ret = of_property_read_u32(card->dev->of_node, hph_switch, &hph_swh);
+ if (ret) {
+ dev_err(card->dev,
+ "%s: missing %s in dt node\n", __func__, hph_switch);
+ goto err;
+ }
+
+ ret = of_property_read_u32(card->dev->of_node, gnd_switch, &gnd_swh);
+ if (ret) {
+ dev_err(card->dev,
+ "%s: missing %s in dt node\n", __func__, gnd_switch);
+ goto err;
+ }
+
+ mbhc->in_swch_irq_handler = false;
+ mbhc->current_plug = MBHC_PLUG_TYPE_NONE;
+ mbhc->is_btn_press = false;
+ mbhc->codec = codec;
+ mbhc->intr_ids = mbhc_cdc_intr_ids;
+ mbhc->impedance_detect = impedance_det_en;
+ mbhc->hphl_swh = hph_swh;
+ mbhc->gnd_swh = gnd_swh;
+ mbhc->micbias_enable = false;
+ mbhc->mbhc_cb = mbhc_cb;
+ mbhc->btn_press_intr = false;
+ mbhc->is_hs_recording = false;
+ mbhc->is_extn_cable = false;
+ mbhc->hph_type = WCD_MBHC_HPH_NONE;
+ mbhc->wcd_mbhc_regs = wcd_mbhc_regs;
+
+ if (mbhc->intr_ids == NULL) {
+ pr_err("%s: Interrupt mapping not provided\n", __func__);
+ return -EINVAL;
+ }
+ if (!mbhc->wcd_mbhc_regs) {
+ dev_err(codec->dev, "%s: mbhc registers are not defined\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ /* Check if IRQ and other required callbacks are defined or not */
+ if (!mbhc_cb || !mbhc_cb->request_irq || !mbhc_cb->irq_control ||
+ !mbhc_cb->free_irq || !mbhc_cb->map_btn_code_to_num ||
+ !mbhc_cb->lock_sleep || !mbhc_cb->mbhc_bias ||
+ !mbhc_cb->set_btn_thr) {
+ dev_err(codec->dev, "%s: required mbhc callbacks are not defined\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ if (mbhc->headset_jack.jack == NULL) {
+ ret = snd_soc_card_jack_new(codec->component.card,
+ "Headset Jack", WCD_MBHC_JACK_MASK,
+ &mbhc->headset_jack, NULL, 0);
+ if (ret) {
+ pr_err("%s: Failed to create new jack\n", __func__);
+ return ret;
+ }
+
+ ret = snd_soc_card_jack_new(codec->component.card,
+ "Button Jack",
+ WCD_MBHC_JACK_BUTTON_MASK,
+ &mbhc->button_jack, NULL, 0);
+ if (ret) {
+ pr_err("Failed to create new jack\n");
+ return ret;
+ }
+
+ ret = snd_jack_set_key(mbhc->button_jack.jack,
+ SND_JACK_BTN_0,
+ KEY_MEDIA);
+ if (ret) {
+ pr_err("%s: Failed to set code for btn-0\n",
+ __func__);
+ return ret;
+ }
+
+ set_bit(INPUT_PROP_NO_DUMMY_RELEASE,
+ mbhc->button_jack.jack->input_dev->propbit);
+
+ INIT_DELAYED_WORK(&mbhc->mbhc_firmware_dwork,
+ wcd_mbhc_fw_read);
+ INIT_DELAYED_WORK(&mbhc->mbhc_btn_dwork, wcd_btn_lpress_fn);
+ }
+ mutex_init(&mbhc->hphl_pa_lock);
+ mutex_init(&mbhc->hphr_pa_lock);
+
+ /* Register event notifier */
+ mbhc->nblock.notifier_call = wcd_event_notify;
+ if (mbhc->mbhc_cb->register_notifier) {
+ ret = mbhc->mbhc_cb->register_notifier(mbhc, &mbhc->nblock,
+ true);
+ if (ret) {
+ pr_err("%s: Failed to register notifier %d\n",
+ __func__, ret);
+ return ret;
+ }
+ }
+
+ init_waitqueue_head(&mbhc->wait_btn_press);
+ mutex_init(&mbhc->codec_resource_lock);
+
+ ret = mbhc->mbhc_cb->request_irq(codec, mbhc->intr_ids->mbhc_sw_intr,
+ wcd_mbhc_mech_plug_detect_irq,
+ "mbhc sw intr", mbhc);
+ if (ret) {
+ pr_err("%s: Failed to request irq %d, ret = %d\n", __func__,
+ mbhc->intr_ids->mbhc_sw_intr, ret);
+ goto err_mbhc_sw_irq;
+ }
+
+ ret = mbhc->mbhc_cb->request_irq(codec,
+ mbhc->intr_ids->mbhc_btn_press_intr,
+ wcd_mbhc_btn_press_handler,
+ "Button Press detect",
+ mbhc);
+ if (ret) {
+ pr_err("%s: Failed to request irq %d\n", __func__,
+ mbhc->intr_ids->mbhc_btn_press_intr);
+ goto err_btn_press_irq;
+ }
+
+ ret = mbhc->mbhc_cb->request_irq(codec,
+ mbhc->intr_ids->mbhc_btn_release_intr,
+ wcd_mbhc_release_handler,
+ "Button Release detect", mbhc);
+ if (ret) {
+ pr_err("%s: Failed to request irq %d\n", __func__,
+ mbhc->intr_ids->mbhc_btn_release_intr);
+ goto err_btn_release_irq;
+ }
+
+ ret = mbhc->mbhc_cb->request_irq(codec,
+ mbhc->intr_ids->mbhc_hs_ins_intr,
+ wcd_mbhc_hs_ins_irq,
+ "Elect Insert", mbhc);
+ if (ret) {
+ pr_err("%s: Failed to request irq %d\n", __func__,
+ mbhc->intr_ids->mbhc_hs_ins_intr);
+ goto err_mbhc_hs_ins_irq;
+ }
+ mbhc->mbhc_cb->irq_control(codec, mbhc->intr_ids->mbhc_hs_ins_intr,
+ false);
+ clear_bit(WCD_MBHC_ELEC_HS_INS, &mbhc->intr_status);
+
+ ret = mbhc->mbhc_cb->request_irq(codec,
+ mbhc->intr_ids->mbhc_hs_rem_intr,
+ wcd_mbhc_hs_rem_irq,
+ "Elect Remove", mbhc);
+ if (ret) {
+ pr_err("%s: Failed to request irq %d\n", __func__,
+ mbhc->intr_ids->mbhc_hs_rem_intr);
+ goto err_mbhc_hs_rem_irq;
+ }
+ mbhc->mbhc_cb->irq_control(codec, mbhc->intr_ids->mbhc_hs_rem_intr,
+ false);
+ clear_bit(WCD_MBHC_ELEC_HS_REM, &mbhc->intr_status);
+
+ ret = mbhc->mbhc_cb->request_irq(codec, mbhc->intr_ids->hph_left_ocp,
+ wcd_mbhc_hphl_ocp_irq, "HPH_L OCP detect",
+ mbhc);
+ if (ret) {
+ pr_err("%s: Failed to request irq %d\n", __func__,
+ mbhc->intr_ids->hph_left_ocp);
+ goto err_hphl_ocp_irq;
+ }
+
+ ret = mbhc->mbhc_cb->request_irq(codec, mbhc->intr_ids->hph_right_ocp,
+ wcd_mbhc_hphr_ocp_irq, "HPH_R OCP detect",
+ mbhc);
+ if (ret) {
+ pr_err("%s: Failed to request irq %d\n", __func__,
+ mbhc->intr_ids->hph_right_ocp);
+ goto err_hphr_ocp_irq;
+ }
+
+ pr_debug("%s: leave ret %d\n", __func__, ret);
+ return ret;
+
+err_hphr_ocp_irq:
+ mbhc->mbhc_cb->free_irq(codec, mbhc->intr_ids->hph_left_ocp, mbhc);
+err_hphl_ocp_irq:
+ mbhc->mbhc_cb->free_irq(codec, mbhc->intr_ids->mbhc_hs_rem_intr, mbhc);
+err_mbhc_hs_rem_irq:
+ mbhc->mbhc_cb->free_irq(codec, mbhc->intr_ids->mbhc_hs_ins_intr, mbhc);
+err_mbhc_hs_ins_irq:
+ mbhc->mbhc_cb->free_irq(codec, mbhc->intr_ids->mbhc_btn_release_intr,
+ mbhc);
+err_btn_release_irq:
+ mbhc->mbhc_cb->free_irq(codec, mbhc->intr_ids->mbhc_btn_press_intr,
+ mbhc);
+err_btn_press_irq:
+ mbhc->mbhc_cb->free_irq(codec, mbhc->intr_ids->mbhc_sw_intr, mbhc);
+err_mbhc_sw_irq:
+ if (mbhc->mbhc_cb->register_notifier)
+ mbhc->mbhc_cb->register_notifier(mbhc, &mbhc->nblock, false);
+ mutex_destroy(&mbhc->codec_resource_lock);
+err:
+ pr_debug("%s: leave ret %d\n", __func__, ret);
+ return ret;
+}
+EXPORT_SYMBOL(wcd_mbhc_init);
+
+void wcd_mbhc_deinit(struct wcd_mbhc *mbhc)
+{
+ struct snd_soc_codec *codec = mbhc->codec;
+
+ mbhc->mbhc_cb->free_irq(codec, mbhc->intr_ids->mbhc_sw_intr, mbhc);
+ mbhc->mbhc_cb->free_irq(codec, mbhc->intr_ids->mbhc_btn_press_intr,
+ mbhc);
+ mbhc->mbhc_cb->free_irq(codec, mbhc->intr_ids->mbhc_btn_release_intr,
+ mbhc);
+ mbhc->mbhc_cb->free_irq(codec, mbhc->intr_ids->mbhc_hs_ins_intr, mbhc);
+ mbhc->mbhc_cb->free_irq(codec, mbhc->intr_ids->mbhc_hs_rem_intr, mbhc);
+ mbhc->mbhc_cb->free_irq(codec, mbhc->intr_ids->hph_left_ocp, mbhc);
+ mbhc->mbhc_cb->free_irq(codec, mbhc->intr_ids->hph_right_ocp, mbhc);
+ if (mbhc->mbhc_cb && mbhc->mbhc_cb->register_notifier)
+ mbhc->mbhc_cb->register_notifier(mbhc, &mbhc->nblock, false);
+ mutex_destroy(&mbhc->codec_resource_lock);
+ mutex_destroy(&mbhc->hphl_pa_lock);
+ mutex_destroy(&mbhc->hphr_pa_lock);
+}
+EXPORT_SYMBOL(wcd_mbhc_deinit);
+
+MODULE_DESCRIPTION("wcd MBHC v2 module");
+MODULE_LICENSE("GPL v2");