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gerrit-public.fairphone.software / kernel / msm / 00af1b32035ae8cd9f5985cfe3905d9dd8a063c7 / . / sound / soc / codecs / wcd9xxx-mbhc.c
blob: 9bd1652d54f6637ebf8f5984c73e7345eb0beae3 [file] [log] [blame]
/* Copyright (c) 2012-2014, 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/firmware.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/device.h>
#include <linux/printk.h>
#include <linux/ratelimit.h>
#include <linux/debugfs.h>
#include <linux/list.h>
#include <linux/mfd/wcd9xxx/core.h>
#include <linux/mfd/wcd9xxx/core-resource.h>
#include <linux/mfd/wcd9xxx/wcd9xxx_registers.h>
#include <linux/mfd/wcd9xxx/wcd9320_registers.h>
#include <linux/mfd/wcd9xxx/pdata.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/tlv.h>
#include <linux/bitops.h>
#include <linux/delay.h>
#include <linux/pm_runtime.h>
#include <linux/kernel.h>
#include <linux/gpio.h>
#include <linux/input.h>
#include "wcd9320.h"
#include "wcd9306.h"
#include "wcd9xxx-mbhc.h"
#include "wcd9xxx-resmgr.h"
#include "wcd9xxx-common.h"
#define WCD9XXX_JACK_MASK (SND_JACK_HEADSET | SND_JACK_OC_HPHL | \
SND_JACK_OC_HPHR | SND_JACK_LINEOUT | \
SND_JACK_UNSUPPORTED | SND_JACK_MICROPHONE2)
#define WCD9XXX_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 | \
SND_JACK_BTN_6 | SND_JACK_BTN_7)
#define NUM_DCE_PLUG_DETECT 3
#define NUM_DCE_PLUG_INS_DETECT 5
#define NUM_ATTEMPTS_INSERT_DETECT 25
#define NUM_ATTEMPTS_TO_REPORT 5
#define FAKE_INS_LOW 10
#define FAKE_INS_HIGH 80
#define FAKE_INS_HIGH_NO_SWCH 150
#define FAKE_REMOVAL_MIN_PERIOD_MS 50
#define FAKE_INS_DELTA_SCALED_MV 300
#define BUTTON_MIN 0x8000
#define STATUS_REL_DETECTION 0x0C
#define HS_DETECT_PLUG_TIME_MS (5 * 1000)
#define ANC_HPH_DETECT_PLUG_TIME_MS (5 * 1000)
#define HS_DETECT_PLUG_INERVAL_MS 100
#define SWCH_REL_DEBOUNCE_TIME_MS 50
#define SWCH_IRQ_DEBOUNCE_TIME_US 5000
#define BTN_RELEASE_DEBOUNCE_TIME_MS 25
#define GND_MIC_SWAP_THRESHOLD 2
#define OCP_ATTEMPT 1
#define FW_READ_ATTEMPTS 15
#define FW_READ_TIMEOUT 2000000
#define BUTTON_POLLING_SUPPORTED true
#define MCLK_RATE_12288KHZ 12288000
#define MCLK_RATE_9600KHZ 9600000
#define DEFAULT_DCE_STA_WAIT 55
#define DEFAULT_DCE_WAIT 60000
#define DEFAULT_STA_WAIT 5000
#define VDDIO_MICBIAS_MV 1800
#define WCD9XXX_MICBIAS_PULLDOWN_SETTLE_US 5000
#define WCD9XXX_HPHL_STATUS_READY_WAIT_US 1000
#define WCD9XXX_MUX_SWITCH_READY_WAIT_MS 50
#define WCD9XXX_MEAS_DELTA_MAX_MV 120
#define WCD9XXX_MEAS_INVALD_RANGE_LOW_MV 20
#define WCD9XXX_MEAS_INVALD_RANGE_HIGH_MV 80
/*
* Invalid voltage range for the detection
* of plug type with current source
*/
#define WCD9XXX_CS_MEAS_INVALD_RANGE_LOW_MV 160
#define WCD9XXX_CS_MEAS_INVALD_RANGE_HIGH_MV 265
/*
* Threshold used to detect euro headset
* with current source
*/
#define WCD9XXX_CS_GM_SWAP_THRES_MIN_MV 10
#define WCD9XXX_CS_GM_SWAP_THRES_MAX_MV 40
#define WCD9XXX_MBHC_NSC_CS 9
#define WCD9XXX_GM_SWAP_THRES_MIN_MV 150
#define WCD9XXX_GM_SWAP_THRES_MAX_MV 650
#define WCD9XXX_THRESHOLD_MIC_THRESHOLD 200
#define WCD9XXX_USLEEP_RANGE_MARGIN_US 100
/* RX_HPH_CNP_WG_TIME increases by 0.24ms */
#define WCD9XXX_WG_TIME_FACTOR_US 240
#define WCD9XXX_V_CS_HS_MAX 500
#define WCD9XXX_V_CS_NO_MIC 5
#define WCD9XXX_MB_MEAS_DELTA_MAX_MV 80
#define WCD9XXX_CS_MEAS_DELTA_MAX_MV 12
static int impedance_detect_en;
module_param(impedance_detect_en, int,
S_IRUGO | S_IWUSR | S_IWGRP);
MODULE_PARM_DESC(impedance_detect_en, "enable/disable impedance detect");
static bool detect_use_vddio_switch;
struct wcd9xxx_mbhc_detect {
u16 dce;
u16 sta;
u16 hphl_status;
bool swap_gnd;
bool vddio;
bool hwvalue;
bool mic_bias;
/* internal purpose from here */
bool _above_no_mic;
bool _below_v_hs_max;
s16 _vdces;
enum wcd9xxx_mbhc_plug_type _type;
};
enum meas_type {
STA = 0,
DCE,
};
enum {
MBHC_USE_HPHL_TRIGGER = 1,
MBHC_USE_MB_TRIGGER = 2
};
/*
* Flags to track of PA and DAC state.
* PA and DAC should be tracked separately as AUXPGA loopback requires
* only PA to be turned on without DAC being on.
*/
enum pa_dac_ack_flags {
WCD9XXX_HPHL_PA_OFF_ACK = 0,
WCD9XXX_HPHR_PA_OFF_ACK,
WCD9XXX_HPHL_DAC_OFF_ACK,
WCD9XXX_HPHR_DAC_OFF_ACK
};
enum wcd9xxx_current_v_idx {
WCD9XXX_CURRENT_V_INS_H,
WCD9XXX_CURRENT_V_INS_HU,
WCD9XXX_CURRENT_V_B1_H,
WCD9XXX_CURRENT_V_B1_HU,
WCD9XXX_CURRENT_V_BR_H,
};
static int wcd9xxx_detect_impedance(struct wcd9xxx_mbhc *mbhc, uint32_t *zl,
uint32_t *zr);
static s16 wcd9xxx_get_current_v(struct wcd9xxx_mbhc *mbhc,
const enum wcd9xxx_current_v_idx idx);
static void wcd9xxx_get_z(struct wcd9xxx_mbhc *mbhc, s16 *dce_z, s16 *sta_z,
struct mbhc_micbias_regs *micb_regs,
bool norel);
static void wcd9xxx_mbhc_calc_thres(struct wcd9xxx_mbhc *mbhc);
static bool wcd9xxx_mbhc_polling(struct wcd9xxx_mbhc *mbhc)
{
return snd_soc_read(mbhc->codec, WCD9XXX_A_CDC_MBHC_EN_CTL) & 0x1;
}
static void wcd9xxx_turn_onoff_override(struct wcd9xxx_mbhc *mbhc, bool on)
{
struct snd_soc_codec *codec = mbhc->codec;
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL,
0x04, on ? 0x04 : 0x00);
}
/* called under codec_resource_lock acquisition */
static void wcd9xxx_pause_hs_polling(struct wcd9xxx_mbhc *mbhc)
{
struct snd_soc_codec *codec = mbhc->codec;
pr_debug("%s: enter\n", __func__);
if (!mbhc->polling_active) {
pr_debug("polling not active, nothing to pause\n");
return;
}
/* Soft reset MBHC block */
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x8, 0x8);
pr_debug("%s: leave\n", __func__);
}
/* called under codec_resource_lock acquisition */
static void wcd9xxx_start_hs_polling(struct wcd9xxx_mbhc *mbhc)
{
struct snd_soc_codec *codec = mbhc->codec;
int mbhc_state = mbhc->mbhc_state;
pr_debug("%s: enter\n", __func__);
if (!mbhc->polling_active) {
pr_debug("Polling is not active, do not start polling\n");
return;
}
/*
* setup internal micbias if codec uses internal micbias for
* headset detection
*/
if (mbhc->mbhc_cfg->use_int_rbias) {
if (mbhc->mbhc_cb && mbhc->mbhc_cb->setup_int_rbias)
mbhc->mbhc_cb->setup_int_rbias(codec, true);
else
pr_err("%s: internal bias requested but codec did not provide callback\n",
__func__);
}
snd_soc_write(codec, WCD9XXX_A_MBHC_SCALING_MUX_1, 0x04);
if (mbhc->mbhc_cb && mbhc->mbhc_cb->enable_mux_bias_block)
mbhc->mbhc_cb->enable_mux_bias_block(codec);
else
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_SCALING_MUX_1,
0x80, 0x80);
if (!mbhc->no_mic_headset_override &&
mbhc_state == MBHC_STATE_POTENTIAL) {
pr_debug("%s recovering MBHC state machine\n", __func__);
mbhc->mbhc_state = MBHC_STATE_POTENTIAL_RECOVERY;
/* set to max button press threshold */
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B2_CTL, 0x7F);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B1_CTL, 0xFF);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B4_CTL, 0x7F);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B3_CTL, 0xFF);
/* set to max */
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B6_CTL, 0x7F);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B5_CTL, 0xFF);
}
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_EN_CTL, 0x1);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x8, 0x0);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_EN_CTL, 0x1);
pr_debug("%s: leave\n", __func__);
}
static int __wcd9xxx_resmgr_get_k_val(struct wcd9xxx_mbhc *mbhc,
unsigned int cfilt_mv)
{
return wcd9xxx_resmgr_get_k_val(mbhc->resmgr, cfilt_mv);
}
/*
* called under codec_resource_lock acquisition
* return old status
*/
static bool __wcd9xxx_switch_micbias(struct wcd9xxx_mbhc *mbhc,
int vddio_switch, bool restartpolling,
bool checkpolling)
{
bool ret;
int cfilt_k_val;
bool override;
struct snd_soc_codec *codec;
struct mbhc_internal_cal_data *d = &mbhc->mbhc_data;
codec = mbhc->codec;
if (mbhc->micbias_enable) {
pr_debug("%s: micbias is already on\n", __func__);
ret = mbhc->mbhc_micbias_switched;
return ret;
}
ret = mbhc->mbhc_micbias_switched;
if (vddio_switch && !mbhc->mbhc_micbias_switched &&
(!checkpolling || mbhc->polling_active)) {
if (restartpolling)
wcd9xxx_pause_hs_polling(mbhc);
override = snd_soc_read(codec, WCD9XXX_A_CDC_MBHC_B1_CTL) &
0x04;
if (!override)
wcd9xxx_turn_onoff_override(mbhc, true);
/* Adjust threshold if Mic Bias voltage changes */
if (d->micb_mv != VDDIO_MICBIAS_MV) {
cfilt_k_val = __wcd9xxx_resmgr_get_k_val(mbhc,
VDDIO_MICBIAS_MV);
usleep_range(10000, 10000);
snd_soc_update_bits(codec,
mbhc->mbhc_bias_regs.cfilt_val,
0xFC, (cfilt_k_val << 2));
usleep_range(10000, 10000);
/* Threshods for insertion/removal */
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B1_CTL,
d->v_ins_hu[MBHC_V_IDX_VDDIO] & 0xFF);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B2_CTL,
(d->v_ins_hu[MBHC_V_IDX_VDDIO] >> 8) &
0xFF);
if (mbhc->mbhc_state != MBHC_STATE_POTENTIAL_RECOVERY) {
/* Threshods for button press */
snd_soc_write(codec,
WCD9XXX_A_CDC_MBHC_VOLT_B3_CTL,
d->v_b1_hu[MBHC_V_IDX_VDDIO] & 0xFF);
snd_soc_write(codec,
WCD9XXX_A_CDC_MBHC_VOLT_B4_CTL,
(d->v_b1_hu[MBHC_V_IDX_VDDIO] >> 8) &
0xFF);
snd_soc_write(codec,
WCD9XXX_A_CDC_MBHC_VOLT_B5_CTL,
d->v_b1_h[MBHC_V_IDX_VDDIO] & 0xFF);
snd_soc_write(codec,
WCD9XXX_A_CDC_MBHC_VOLT_B6_CTL,
(d->v_b1_h[MBHC_V_IDX_VDDIO] >> 8) &
0xFF);
/* Threshods for button release */
snd_soc_write(codec,
WCD9XXX_A_CDC_MBHC_VOLT_B9_CTL,
d->v_brh[MBHC_V_IDX_VDDIO] & 0xFF);
snd_soc_write(codec,
WCD9XXX_A_CDC_MBHC_VOLT_B10_CTL,
(d->v_brh[MBHC_V_IDX_VDDIO] >> 8) &
0xFF);
}
pr_debug("%s: Programmed MBHC thresholds to VDDIO\n",
__func__);
}
/* Enable MIC BIAS Switch to VDDIO */
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.mbhc_reg,
0x80, 0x80);
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.mbhc_reg,
0x10, 0x00);
if (!override)
wcd9xxx_turn_onoff_override(mbhc, false);
if (restartpolling)
wcd9xxx_start_hs_polling(mbhc);
mbhc->mbhc_micbias_switched = true;
pr_debug("%s: VDDIO switch enabled\n", __func__);
} else if (!vddio_switch && mbhc->mbhc_micbias_switched) {
if ((!checkpolling || mbhc->polling_active) &&
restartpolling)
wcd9xxx_pause_hs_polling(mbhc);
/* Reprogram thresholds */
if (d->micb_mv != VDDIO_MICBIAS_MV) {
cfilt_k_val =
__wcd9xxx_resmgr_get_k_val(mbhc,
d->micb_mv);
snd_soc_update_bits(codec,
mbhc->mbhc_bias_regs.cfilt_val,
0xFC, (cfilt_k_val << 2));
usleep_range(10000, 10000);
/* Revert threshods for insertion/removal */
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B1_CTL,
d->v_ins_hu[MBHC_V_IDX_CFILT] & 0xFF);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B2_CTL,
(d->v_ins_hu[MBHC_V_IDX_CFILT] >> 8) &
0xFF);
if (mbhc->mbhc_state != MBHC_STATE_POTENTIAL_RECOVERY) {
/* Revert threshods for button press */
snd_soc_write(codec,
WCD9XXX_A_CDC_MBHC_VOLT_B3_CTL,
d->v_b1_hu[MBHC_V_IDX_CFILT] & 0xFF);
snd_soc_write(codec,
WCD9XXX_A_CDC_MBHC_VOLT_B4_CTL,
(d->v_b1_hu[MBHC_V_IDX_CFILT] >> 8) &
0xFF);
snd_soc_write(codec,
WCD9XXX_A_CDC_MBHC_VOLT_B5_CTL,
d->v_b1_h[MBHC_V_IDX_CFILT] & 0xFF);
snd_soc_write(codec,
WCD9XXX_A_CDC_MBHC_VOLT_B6_CTL,
(d->v_b1_h[MBHC_V_IDX_CFILT] >> 8) &
0xFF);
/* Revert threshods for button release */
snd_soc_write(codec,
WCD9XXX_A_CDC_MBHC_VOLT_B9_CTL,
d->v_brh[MBHC_V_IDX_CFILT] & 0xFF);
snd_soc_write(codec,
WCD9XXX_A_CDC_MBHC_VOLT_B10_CTL,
(d->v_brh[MBHC_V_IDX_CFILT] >> 8) &
0xFF);
}
pr_debug("%s: Programmed MBHC thresholds to MICBIAS\n",
__func__);
}
/* Disable MIC BIAS Switch to VDDIO */
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.mbhc_reg, 0x80,
0x00);
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.mbhc_reg, 0x10,
0x00);
if ((!checkpolling || mbhc->polling_active) && restartpolling)
wcd9xxx_start_hs_polling(mbhc);
mbhc->mbhc_micbias_switched = false;
pr_debug("%s: VDDIO switch disabled\n", __func__);
}
return ret;
}
static void wcd9xxx_switch_micbias(struct wcd9xxx_mbhc *mbhc, int vddio_switch)
{
__wcd9xxx_switch_micbias(mbhc, vddio_switch, true, true);
}
static s16 wcd9xxx_get_current_v(struct wcd9xxx_mbhc *mbhc,
const enum wcd9xxx_current_v_idx idx)
{
enum mbhc_v_index vidx;
s16 ret = -EINVAL;
if ((mbhc->mbhc_data.micb_mv != VDDIO_MICBIAS_MV) &&
mbhc->mbhc_micbias_switched)
vidx = MBHC_V_IDX_VDDIO;
else
vidx = MBHC_V_IDX_CFILT;
switch (idx) {
case WCD9XXX_CURRENT_V_INS_H:
ret = (s16)mbhc->mbhc_data.v_ins_h[vidx];
break;
case WCD9XXX_CURRENT_V_INS_HU:
ret = (s16)mbhc->mbhc_data.v_ins_hu[vidx];
break;
case WCD9XXX_CURRENT_V_B1_H:
ret = (s16)mbhc->mbhc_data.v_b1_h[vidx];
break;
case WCD9XXX_CURRENT_V_B1_HU:
ret = (s16)mbhc->mbhc_data.v_b1_hu[vidx];
break;
case WCD9XXX_CURRENT_V_BR_H:
ret = (s16)mbhc->mbhc_data.v_brh[vidx];
break;
}
return ret;
}
void *wcd9xxx_mbhc_cal_btn_det_mp(
const struct wcd9xxx_mbhc_btn_detect_cfg *btn_det,
const enum wcd9xxx_mbhc_btn_det_mem mem)
{
void *ret = &btn_det->_v_btn_low;
switch (mem) {
case MBHC_BTN_DET_GAIN:
ret += sizeof(btn_det->_n_cic);
case MBHC_BTN_DET_N_CIC:
ret += sizeof(btn_det->_n_ready);
case MBHC_BTN_DET_N_READY:
ret += sizeof(btn_det->_v_btn_high[0]) * btn_det->num_btn;
case MBHC_BTN_DET_V_BTN_HIGH:
ret += sizeof(btn_det->_v_btn_low[0]) * btn_det->num_btn;
case MBHC_BTN_DET_V_BTN_LOW:
/* do nothing */
break;
default:
ret = NULL;
}
return ret;
}
EXPORT_SYMBOL(wcd9xxx_mbhc_cal_btn_det_mp);
static void wcd9xxx_calibrate_hs_polling(struct wcd9xxx_mbhc *mbhc)
{
struct snd_soc_codec *codec = mbhc->codec;
const s16 v_ins_hu = wcd9xxx_get_current_v(mbhc,
WCD9XXX_CURRENT_V_INS_HU);
const s16 v_b1_hu = wcd9xxx_get_current_v(mbhc,
WCD9XXX_CURRENT_V_B1_HU);
const s16 v_b1_h = wcd9xxx_get_current_v(mbhc, WCD9XXX_CURRENT_V_B1_H);
const s16 v_brh = wcd9xxx_get_current_v(mbhc, WCD9XXX_CURRENT_V_BR_H);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B1_CTL, v_ins_hu & 0xFF);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B2_CTL,
(v_ins_hu >> 8) & 0xFF);
if (mbhc->mbhc_state != MBHC_STATE_POTENTIAL_RECOVERY) {
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B3_CTL, v_b1_hu &
0xFF);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B4_CTL,
(v_b1_hu >> 8) & 0xFF);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B5_CTL, v_b1_h &
0xFF);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B6_CTL,
(v_b1_h >> 8) & 0xFF);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B9_CTL, v_brh &
0xFF);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B10_CTL,
(v_brh >> 8) & 0xFF);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B11_CTL,
mbhc->mbhc_data.v_brl & 0xFF);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B12_CTL,
(mbhc->mbhc_data.v_brl >> 8) & 0xFF);
}
}
static void wcd9xxx_codec_switch_cfilt_mode(struct wcd9xxx_mbhc *mbhc,
bool fast)
{
struct snd_soc_codec *codec = mbhc->codec;
struct wcd9xxx_cfilt_mode cfilt_mode;
if (mbhc->mbhc_cb && mbhc->mbhc_cb->switch_cfilt_mode) {
cfilt_mode = mbhc->mbhc_cb->switch_cfilt_mode(mbhc, fast);
} else {
if (fast)
cfilt_mode.reg_mode_val = WCD9XXX_CFILT_FAST_MODE;
else
cfilt_mode.reg_mode_val = WCD9XXX_CFILT_SLOW_MODE;
cfilt_mode.reg_mask = 0x40;
cfilt_mode.cur_mode_val =
snd_soc_read(codec, mbhc->mbhc_bias_regs.cfilt_ctl) & 0x40;
}
if (cfilt_mode.cur_mode_val
!= cfilt_mode.reg_mode_val) {
if (mbhc->polling_active && wcd9xxx_mbhc_polling(mbhc))
wcd9xxx_pause_hs_polling(mbhc);
snd_soc_update_bits(codec,
mbhc->mbhc_bias_regs.cfilt_ctl,
cfilt_mode.reg_mask,
cfilt_mode.reg_mode_val);
if (mbhc->polling_active && wcd9xxx_mbhc_polling(mbhc))
wcd9xxx_start_hs_polling(mbhc);
pr_debug("%s: CFILT mode change (%x to %x)\n", __func__,
cfilt_mode.cur_mode_val,
cfilt_mode.reg_mode_val);
} else {
pr_debug("%s: CFILT Value is already %x\n",
__func__, cfilt_mode.cur_mode_val);
}
}
static void wcd9xxx_jack_report(struct wcd9xxx_mbhc *mbhc,
struct snd_soc_jack *jack, int status, int mask)
{
if (jack == &mbhc->headset_jack) {
wcd9xxx_resmgr_cond_update_cond(mbhc->resmgr,
WCD9XXX_COND_HPH_MIC,
status & SND_JACK_MICROPHONE);
wcd9xxx_resmgr_cond_update_cond(mbhc->resmgr,
WCD9XXX_COND_HPH,
status & SND_JACK_HEADPHONE);
}
snd_soc_jack_report_no_dapm(jack, status, mask);
}
static void __hphocp_off_report(struct wcd9xxx_mbhc *mbhc, u32 jack_status,
int irq)
{
struct snd_soc_codec *codec;
pr_debug("%s: clear ocp status %x\n", __func__, jack_status);
codec = mbhc->codec;
if (mbhc->hph_status & jack_status) {
mbhc->hph_status &= ~jack_status;
wcd9xxx_jack_report(mbhc, &mbhc->headset_jack,
mbhc->hph_status, WCD9XXX_JACK_MASK);
snd_soc_update_bits(codec, WCD9XXX_A_RX_HPH_OCP_CTL, 0x10,
0x00);
snd_soc_update_bits(codec, WCD9XXX_A_RX_HPH_OCP_CTL, 0x10,
0x10);
/*
* 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;
wcd9xxx_enable_irq(mbhc->resmgr->core_res, irq);
}
}
static void hphrocp_off_report(struct wcd9xxx_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 wcd9xxx_mbhc *mbhc, u32 jack_status)
{
__hphocp_off_report(mbhc, SND_JACK_OC_HPHL,
mbhc->intr_ids->hph_left_ocp);
}
static void wcd9xxx_get_mbhc_micbias_regs(struct wcd9xxx_mbhc *mbhc,
enum wcd9xxx_mbhc_micbias_type mb_type)
{
unsigned int cfilt;
struct wcd9xxx_micbias_setting *micbias_pdata =
mbhc->resmgr->micbias_pdata;
struct mbhc_micbias_regs *micbias_regs;
enum wcd9xxx_micbias_num mb_num;
if (mb_type == MBHC_ANC_MIC_MB) {
micbias_regs = &mbhc->mbhc_anc_bias_regs;
mb_num = mbhc->mbhc_cfg->anc_micbias;
} else {
micbias_regs = &mbhc->mbhc_bias_regs;
mb_num = mbhc->mbhc_cfg->micbias;
}
switch (mb_num) {
case MBHC_MICBIAS1:
cfilt = micbias_pdata->bias1_cfilt_sel;
micbias_regs->mbhc_reg = WCD9XXX_A_MICB_1_MBHC;
micbias_regs->int_rbias = WCD9XXX_A_MICB_1_INT_RBIAS;
micbias_regs->ctl_reg = WCD9XXX_A_MICB_1_CTL;
break;
case MBHC_MICBIAS2:
cfilt = micbias_pdata->bias2_cfilt_sel;
micbias_regs->mbhc_reg = WCD9XXX_A_MICB_2_MBHC;
micbias_regs->int_rbias = WCD9XXX_A_MICB_2_INT_RBIAS;
micbias_regs->ctl_reg = WCD9XXX_A_MICB_2_CTL;
break;
case MBHC_MICBIAS3:
cfilt = micbias_pdata->bias3_cfilt_sel;
micbias_regs->mbhc_reg = WCD9XXX_A_MICB_3_MBHC;
micbias_regs->int_rbias = WCD9XXX_A_MICB_3_INT_RBIAS;
micbias_regs->ctl_reg = WCD9XXX_A_MICB_3_CTL;
break;
case MBHC_MICBIAS4:
cfilt = micbias_pdata->bias4_cfilt_sel;
micbias_regs->mbhc_reg = mbhc->resmgr->reg_addr->micb_4_mbhc;
micbias_regs->int_rbias =
mbhc->resmgr->reg_addr->micb_4_int_rbias;
micbias_regs->ctl_reg = mbhc->resmgr->reg_addr->micb_4_ctl;
break;
default:
/* Should never reach here */
pr_err("%s: Invalid MIC BIAS for MBHC\n", __func__);
return;
}
micbias_regs->cfilt_sel = cfilt;
switch (cfilt) {
case WCD9XXX_CFILT1_SEL:
micbias_regs->cfilt_val = WCD9XXX_A_MICB_CFILT_1_VAL;
micbias_regs->cfilt_ctl = WCD9XXX_A_MICB_CFILT_1_CTL;
break;
case WCD9XXX_CFILT2_SEL:
micbias_regs->cfilt_val = WCD9XXX_A_MICB_CFILT_2_VAL;
micbias_regs->cfilt_ctl = WCD9XXX_A_MICB_CFILT_2_CTL;
break;
case WCD9XXX_CFILT3_SEL:
micbias_regs->cfilt_val = WCD9XXX_A_MICB_CFILT_3_VAL;
micbias_regs->cfilt_ctl = WCD9XXX_A_MICB_CFILT_3_CTL;
break;
}
if (mb_type == MBHC_PRIMARY_MIC_MB) {
switch (cfilt) {
case WCD9XXX_CFILT1_SEL:
mbhc->mbhc_data.micb_mv = micbias_pdata->cfilt1_mv;
break;
case WCD9XXX_CFILT2_SEL:
mbhc->mbhc_data.micb_mv = micbias_pdata->cfilt2_mv;
break;
case WCD9XXX_CFILT3_SEL:
mbhc->mbhc_data.micb_mv = micbias_pdata->cfilt3_mv;
break;
}
}
}
static void wcd9xxx_clr_and_turnon_hph_padac(struct wcd9xxx_mbhc *mbhc)
{
bool pa_turned_on = false;
struct snd_soc_codec *codec = mbhc->codec;
u8 wg_time;
wg_time = snd_soc_read(codec, WCD9XXX_A_RX_HPH_CNP_WG_TIME) ;
wg_time += 1;
if (test_and_clear_bit(WCD9XXX_HPHR_DAC_OFF_ACK,
&mbhc->hph_pa_dac_state)) {
pr_debug("%s: HPHR clear flag and enable DAC\n", __func__);
snd_soc_update_bits(codec, WCD9XXX_A_RX_HPH_R_DAC_CTL,
0xC0, 0xC0);
}
if (test_and_clear_bit(WCD9XXX_HPHL_DAC_OFF_ACK,
&mbhc->hph_pa_dac_state)) {
pr_debug("%s: HPHL clear flag and enable DAC\n", __func__);
snd_soc_update_bits(codec, WCD9XXX_A_RX_HPH_L_DAC_CTL,
0x80, 0x80);
}
if (test_and_clear_bit(WCD9XXX_HPHR_PA_OFF_ACK,
&mbhc->hph_pa_dac_state)) {
pr_debug("%s: HPHR clear flag and enable PA\n", __func__);
snd_soc_update_bits(codec, WCD9XXX_A_RX_HPH_CNP_EN, 0x10,
1 << 4);
pa_turned_on = true;
}
if (test_and_clear_bit(WCD9XXX_HPHL_PA_OFF_ACK,
&mbhc->hph_pa_dac_state)) {
pr_debug("%s: HPHL clear flag and enable PA\n", __func__);
snd_soc_update_bits(codec, WCD9XXX_A_RX_HPH_CNP_EN, 0x20, 1
<< 5);
pa_turned_on = true;
}
if (pa_turned_on) {
pr_debug("%s: PA was turned off by MBHC and not by DAPM\n",
__func__);
usleep_range(wg_time * 1000, wg_time * 1000);
}
}
static int wcd9xxx_cancel_btn_work(struct wcd9xxx_mbhc *mbhc)
{
int r;
r = cancel_delayed_work_sync(&mbhc->mbhc_btn_dwork);
if (r)
/* if scheduled mbhc.mbhc_btn_dwork is canceled from here,
* we have to unlock from here instead btn_work */
wcd9xxx_unlock_sleep(mbhc->resmgr->core_res);
return r;
}
static bool wcd9xxx_is_hph_dac_on(struct snd_soc_codec *codec, int left)
{
u8 hph_reg_val = 0;
if (left)
hph_reg_val = snd_soc_read(codec, WCD9XXX_A_RX_HPH_L_DAC_CTL);
else
hph_reg_val = snd_soc_read(codec, WCD9XXX_A_RX_HPH_R_DAC_CTL);
return (hph_reg_val & 0xC0) ? true : false;
}
static bool wcd9xxx_is_hph_pa_on(struct snd_soc_codec *codec)
{
u8 hph_reg_val = 0;
hph_reg_val = snd_soc_read(codec, WCD9XXX_A_RX_HPH_CNP_EN);
return (hph_reg_val & 0x30) ? true : false;
}
/* called under codec_resource_lock acquisition */
static void wcd9xxx_set_and_turnoff_hph_padac(struct wcd9xxx_mbhc *mbhc)
{
u8 wg_time;
struct snd_soc_codec *codec = mbhc->codec;
wg_time = snd_soc_read(codec, WCD9XXX_A_RX_HPH_CNP_WG_TIME);
wg_time += 1;
/* If headphone PA is on, check if userspace receives
* removal event to sync-up PA's state */
if (wcd9xxx_is_hph_pa_on(codec)) {
pr_debug("%s PA is on, setting PA_OFF_ACK\n", __func__);
set_bit(WCD9XXX_HPHL_PA_OFF_ACK, &mbhc->hph_pa_dac_state);
set_bit(WCD9XXX_HPHR_PA_OFF_ACK, &mbhc->hph_pa_dac_state);
} else {
pr_debug("%s PA is off\n", __func__);
}
if (wcd9xxx_is_hph_dac_on(codec, 1))
set_bit(WCD9XXX_HPHL_DAC_OFF_ACK, &mbhc->hph_pa_dac_state);
if (wcd9xxx_is_hph_dac_on(codec, 0))
set_bit(WCD9XXX_HPHR_DAC_OFF_ACK, &mbhc->hph_pa_dac_state);
snd_soc_update_bits(codec, WCD9XXX_A_RX_HPH_CNP_EN, 0x30, 0x00);
snd_soc_update_bits(codec, WCD9XXX_A_RX_HPH_L_DAC_CTL, 0x80, 0x00);
snd_soc_update_bits(codec, WCD9XXX_A_RX_HPH_R_DAC_CTL, 0xC0, 0x00);
usleep_range(wg_time * 1000, wg_time * 1000);
}
static void wcd9xxx_insert_detect_setup(struct wcd9xxx_mbhc *mbhc, bool ins)
{
if (!mbhc->mbhc_cfg->insert_detect)
return;
pr_debug("%s: Setting up %s detection\n", __func__,
ins ? "insert" : "removal");
/* Disable detection to avoid glitch */
snd_soc_update_bits(mbhc->codec, WCD9XXX_A_MBHC_INSERT_DETECT, 1, 0);
if (mbhc->mbhc_cfg->gpio_level_insert)
snd_soc_write(mbhc->codec, WCD9XXX_A_MBHC_INSERT_DETECT,
(0x68 | (ins ? (1 << 1) : 0)));
else
snd_soc_write(mbhc->codec, WCD9XXX_A_MBHC_INSERT_DETECT,
(0x6C | (ins ? (1 << 1) : 0)));
/* Re-enable detection */
snd_soc_update_bits(mbhc->codec, WCD9XXX_A_MBHC_INSERT_DETECT, 1, 1);
}
/* called under codec_resource_lock acquisition */
static void wcd9xxx_report_plug(struct wcd9xxx_mbhc *mbhc, int insertion,
enum snd_jack_types jack_type)
{
WCD9XXX_BCL_ASSERT_LOCKED(mbhc->resmgr);
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 (wcd9xxx_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);
wcd9xxx_jack_report(mbhc, &mbhc->button_jack, 0,
mbhc->buttons_pressed);
mbhc->buttons_pressed &=
~WCD9XXX_JACK_BUTTON_MASK;
}
if (mbhc->micbias_enable && mbhc->micbias_enable_cb) {
pr_debug("%s: Disabling micbias\n", __func__);
mbhc->micbias_enable_cb(mbhc->codec, false,
mbhc->mbhc_cfg->micbias);
mbhc->micbias_enable = false;
}
mbhc->zl = mbhc->zr = 0;
pr_debug("%s: Reporting removal %d(%x)\n", __func__,
jack_type, mbhc->hph_status);
wcd9xxx_jack_report(mbhc, &mbhc->headset_jack, mbhc->hph_status,
WCD9XXX_JACK_MASK);
wcd9xxx_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 = PLUG_TYPE_NONE;
mbhc->polling_active = false;
} 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 == PLUG_TYPE_HEADPHONE &&
jack_type == SND_JACK_HEADSET) &&
(mbhc->hph_status && mbhc->hph_status != jack_type)) {
if (mbhc->micbias_enable && mbhc->micbias_enable_cb &&
mbhc->hph_status == SND_JACK_HEADSET) {
pr_debug("%s: Disabling micbias\n", __func__);
mbhc->micbias_enable_cb(mbhc->codec, false,
mbhc->mbhc_cfg->micbias);
mbhc->micbias_enable = false;
}
pr_debug("%s: Reporting removal (%x)\n",
__func__, mbhc->hph_status);
mbhc->zl = mbhc->zr = 0;
wcd9xxx_jack_report(mbhc, &mbhc->headset_jack,
0, WCD9XXX_JACK_MASK);
mbhc->hph_status &= ~(SND_JACK_HEADSET |
SND_JACK_LINEOUT |
SND_JACK_ANC_HEADPHONE |
SND_JACK_UNSUPPORTED);
}
/* Report insertion */
mbhc->hph_status |= jack_type;
if (jack_type == SND_JACK_HEADPHONE) {
mbhc->current_plug = PLUG_TYPE_HEADPHONE;
} else if (jack_type == SND_JACK_UNSUPPORTED) {
mbhc->current_plug = PLUG_TYPE_GND_MIC_SWAP;
} else if (jack_type == SND_JACK_HEADSET) {
mbhc->polling_active = BUTTON_POLLING_SUPPORTED;
mbhc->current_plug = PLUG_TYPE_HEADSET;
mbhc->update_z = true;
} else if (jack_type == SND_JACK_LINEOUT) {
mbhc->current_plug = PLUG_TYPE_HIGH_HPH;
} else if (jack_type == SND_JACK_ANC_HEADPHONE) {
mbhc->polling_active = BUTTON_POLLING_SUPPORTED;
mbhc->current_plug = PLUG_TYPE_ANC_HEADPHONE;
}
if (mbhc->micbias_enable && mbhc->micbias_enable_cb) {
pr_debug("%s: Enabling micbias\n", __func__);
mbhc->micbias_enable_cb(mbhc->codec, true,
mbhc->mbhc_cfg->micbias);
}
if (mbhc->impedance_detect && impedance_detect_en)
wcd9xxx_detect_impedance(mbhc, &mbhc->zl, &mbhc->zr);
pr_debug("%s: Reporting insertion %d(%x)\n", __func__,
jack_type, mbhc->hph_status);
wcd9xxx_jack_report(mbhc, &mbhc->headset_jack,
mbhc->hph_status, WCD9XXX_JACK_MASK);
wcd9xxx_clr_and_turnon_hph_padac(mbhc);
}
/* Setup insert detect */
wcd9xxx_insert_detect_setup(mbhc, !insertion);
pr_debug("%s: leave hph_status %x\n", __func__, mbhc->hph_status);
}
/* should be called under interrupt context that hold suspend */
static void wcd9xxx_schedule_hs_detect_plug(struct wcd9xxx_mbhc *mbhc,
struct work_struct *work)
{
pr_debug("%s: scheduling wcd9xxx_correct_swch_plug\n", __func__);
WCD9XXX_BCL_ASSERT_LOCKED(mbhc->resmgr);
mbhc->hs_detect_work_stop = false;
wcd9xxx_lock_sleep(mbhc->resmgr->core_res);
schedule_work(work);
}
/* called under codec_resource_lock acquisition */
static void wcd9xxx_cancel_hs_detect_plug(struct wcd9xxx_mbhc *mbhc,
struct work_struct *work)
{
pr_debug("%s: Canceling correct_plug_swch\n", __func__);
WCD9XXX_BCL_ASSERT_LOCKED(mbhc->resmgr);
mbhc->hs_detect_work_stop = true;
wmb();
WCD9XXX_BCL_UNLOCK(mbhc->resmgr);
if (cancel_work_sync(work)) {
pr_debug("%s: correct_plug_swch is canceled\n",
__func__);
wcd9xxx_unlock_sleep(mbhc->resmgr->core_res);
}
WCD9XXX_BCL_LOCK(mbhc->resmgr);
}
static s16 scale_v_micb_vddio(struct wcd9xxx_mbhc *mbhc, int v, bool tovddio)
{
int r;
int vddio_k, mb_k;
vddio_k = __wcd9xxx_resmgr_get_k_val(mbhc, VDDIO_MICBIAS_MV);
mb_k = __wcd9xxx_resmgr_get_k_val(mbhc, mbhc->mbhc_data.micb_mv);
if (tovddio)
r = v * (vddio_k + 4) / (mb_k + 4);
else
r = v * (mb_k + 4) / (vddio_k + 4);
return r;
}
static s16 wcd9xxx_get_current_v_hs_max(struct wcd9xxx_mbhc *mbhc)
{
s16 v_hs_max;
struct wcd9xxx_mbhc_plug_type_cfg *plug_type;
plug_type = WCD9XXX_MBHC_CAL_PLUG_TYPE_PTR(mbhc->mbhc_cfg->calibration);
if ((mbhc->mbhc_data.micb_mv != VDDIO_MICBIAS_MV) &&
mbhc->mbhc_micbias_switched)
v_hs_max = scale_v_micb_vddio(mbhc, plug_type->v_hs_max, true);
else
v_hs_max = plug_type->v_hs_max;
return v_hs_max;
}
static short wcd9xxx_read_sta_result(struct snd_soc_codec *codec)
{
u8 bias_msb, bias_lsb;
short bias_value;
bias_msb = snd_soc_read(codec, WCD9XXX_A_CDC_MBHC_B3_STATUS);
bias_lsb = snd_soc_read(codec, WCD9XXX_A_CDC_MBHC_B2_STATUS);
bias_value = (bias_msb << 8) | bias_lsb;
return bias_value;
}
static short wcd9xxx_read_dce_result(struct snd_soc_codec *codec)
{
u8 bias_msb, bias_lsb;
short bias_value;
bias_msb = snd_soc_read(codec, WCD9XXX_A_CDC_MBHC_B5_STATUS);
bias_lsb = snd_soc_read(codec, WCD9XXX_A_CDC_MBHC_B4_STATUS);
bias_value = (bias_msb << 8) | bias_lsb;
return bias_value;
}
static void wcd9xxx_turn_onoff_rel_detection(struct snd_soc_codec *codec,
bool on)
{
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL, 0x02, on << 1);
}
static short __wcd9xxx_codec_sta_dce(struct wcd9xxx_mbhc *mbhc, int dce,
bool override_bypass, bool noreldetection)
{
short bias_value;
struct snd_soc_codec *codec = mbhc->codec;
wcd9xxx_disable_irq(mbhc->resmgr->core_res,
mbhc->intr_ids->dce_est_complete);
if (noreldetection)
wcd9xxx_turn_onoff_rel_detection(codec, false);
if (mbhc->mbhc_cfg->do_recalibration)
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x2,
0x0);
/* Turn on the override */
if (!override_bypass)
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL, 0x4, 0x4);
if (dce) {
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x8,
0x8);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_EN_CTL, 0x4);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x8,
0x0);
if (mbhc->mbhc_cfg->do_recalibration)
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL,
0x2, 0x2);
usleep_range(mbhc->mbhc_data.t_sta_dce,
mbhc->mbhc_data.t_sta_dce);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_EN_CTL, 0x4);
usleep_range(mbhc->mbhc_data.t_dce, mbhc->mbhc_data.t_dce);
bias_value = wcd9xxx_read_dce_result(codec);
} else {
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x8,
0x8);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_EN_CTL, 0x2);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x8,
0x0);
if (mbhc->mbhc_cfg->do_recalibration)
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL,
0x2, 0x2);
usleep_range(mbhc->mbhc_data.t_sta_dce,
mbhc->mbhc_data.t_sta_dce);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_EN_CTL, 0x2);
usleep_range(mbhc->mbhc_data.t_sta,
mbhc->mbhc_data.t_sta);
bias_value = wcd9xxx_read_sta_result(codec);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x8,
0x8);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_EN_CTL, 0x0);
}
/* Turn off the override after measuring mic voltage */
if (!override_bypass)
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL, 0x04,
0x00);
if (noreldetection)
wcd9xxx_turn_onoff_rel_detection(codec, true);
wcd9xxx_enable_irq(mbhc->resmgr->core_res,
mbhc->intr_ids->dce_est_complete);
return bias_value;
}
static short wcd9xxx_codec_sta_dce(struct wcd9xxx_mbhc *mbhc, int dce,
bool norel)
{
bool override_bypass;
/* Bypass override if it is already enabled */
override_bypass = (snd_soc_read(mbhc->codec,
WCD9XXX_A_CDC_MBHC_B1_CTL) &
0x04) ? true : false;
return __wcd9xxx_codec_sta_dce(mbhc, dce, override_bypass, norel);
}
static s32 __wcd9xxx_codec_sta_dce_v(struct wcd9xxx_mbhc *mbhc, s8 dce,
u16 bias_value, s16 z, u32 micb_mv)
{
s16 value, mb;
s32 mv;
value = bias_value;
if (dce) {
mb = (mbhc->mbhc_data.dce_mb);
mv = (value - z) * (s32)micb_mv / (mb - z);
} else {
mb = (mbhc->mbhc_data.sta_mb);
mv = (value - z) * (s32)micb_mv / (mb - z);
}
return mv;
}
static s32 wcd9xxx_codec_sta_dce_v(struct wcd9xxx_mbhc *mbhc, s8 dce,
u16 bias_value)
{
s16 z;
z = dce ? (s16)mbhc->mbhc_data.dce_z : (s16)mbhc->mbhc_data.sta_z;
return __wcd9xxx_codec_sta_dce_v(mbhc, dce, bias_value, z,
mbhc->mbhc_data.micb_mv);
}
/* To enable/disable bandgap and RC oscillator */
static void wcd9xxx_mbhc_ctrl_clk_bandgap(struct wcd9xxx_mbhc *mbhc,
bool enable)
{
if (enable) {
WCD9XXX_BG_CLK_LOCK(mbhc->resmgr);
wcd9xxx_resmgr_get_bandgap(mbhc->resmgr,
WCD9XXX_BANDGAP_AUDIO_MODE);
wcd9xxx_resmgr_get_clk_block(mbhc->resmgr,
WCD9XXX_CLK_RCO);
WCD9XXX_BG_CLK_UNLOCK(mbhc->resmgr);
} else {
WCD9XXX_BG_CLK_LOCK(mbhc->resmgr);
wcd9xxx_resmgr_put_clk_block(mbhc->resmgr,
WCD9XXX_CLK_RCO);
wcd9xxx_resmgr_put_bandgap(mbhc->resmgr,
WCD9XXX_BANDGAP_AUDIO_MODE);
WCD9XXX_BG_CLK_UNLOCK(mbhc->resmgr);
}
}
/* called only from interrupt which is under codec_resource_lock acquisition */
static short wcd9xxx_mbhc_setup_hs_polling(struct wcd9xxx_mbhc *mbhc,
struct mbhc_micbias_regs *mbhc_micb_regs,
bool is_cs_enable)
{
struct snd_soc_codec *codec = mbhc->codec;
short bias_value;
u8 cfilt_mode;
s16 reg;
int change;
struct wcd9xxx_mbhc_btn_detect_cfg *btn_det;
s16 sta_z = 0, dce_z = 0;
WCD9XXX_BCL_ASSERT_LOCKED(mbhc->resmgr);
pr_debug("%s: enter\n", __func__);
if (!mbhc->mbhc_cfg->calibration) {
pr_err("%s: Error, no calibration exists\n", __func__);
return -ENODEV;
}
btn_det = WCD9XXX_MBHC_CAL_BTN_DET_PTR(mbhc->mbhc_cfg->calibration);
/* Enable external voltage source to micbias if present */
if (mbhc->mbhc_cb && mbhc->mbhc_cb->enable_mb_source)
mbhc->mbhc_cb->enable_mb_source(codec, true, true);
/*
* setup internal micbias if codec uses internal micbias for
* headset detection
*/
if (mbhc->mbhc_cfg->use_int_rbias) {
if (mbhc->mbhc_cb && mbhc->mbhc_cb->setup_int_rbias)
mbhc->mbhc_cb->setup_int_rbias(codec, true);
else
pr_err("%s: internal bias requested but codec did not provide callback\n",
__func__);
}
snd_soc_update_bits(codec, WCD9XXX_A_CLK_BUFF_EN1, 0x05, 0x01);
/* Make sure CFILT is in fast mode, save current mode */
cfilt_mode = snd_soc_read(codec, mbhc_micb_regs->cfilt_ctl);
if (mbhc->mbhc_cb && mbhc->mbhc_cb->cfilt_fast_mode)
mbhc->mbhc_cb->cfilt_fast_mode(codec, mbhc);
else
snd_soc_update_bits(codec, mbhc_micb_regs->cfilt_ctl,
0x70, 0x00);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x2, 0x2);
snd_soc_write(codec, WCD9XXX_A_MBHC_SCALING_MUX_1,
mbhc->scaling_mux_in);
pr_debug("%s: scaling_mux_input: %d\n", __func__,
mbhc->scaling_mux_in);
if (mbhc->mbhc_cb && mbhc->mbhc_cb->enable_mux_bias_block)
mbhc->mbhc_cb->enable_mux_bias_block(codec);
else
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_SCALING_MUX_1,
0x80, 0x80);
snd_soc_update_bits(codec, WCD9XXX_A_TX_7_MBHC_EN, 0x80, 0x80);
snd_soc_update_bits(codec, WCD9XXX_A_TX_7_MBHC_EN, 0x1F, 0x1C);
snd_soc_update_bits(codec, WCD9XXX_A_TX_7_MBHC_TEST_CTL, 0x40, 0x40);
snd_soc_update_bits(codec, WCD9XXX_A_TX_7_MBHC_EN, 0x80, 0x00);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x8, 0x8);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x8, 0x00);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL, 0x2, 0x2);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x8, 0x8);
if (!mbhc->mbhc_cfg->do_recalibration) {
if (!is_cs_enable)
wcd9xxx_calibrate_hs_polling(mbhc);
}
/* don't flip override */
bias_value = __wcd9xxx_codec_sta_dce(mbhc, 1, true, true);
snd_soc_write(codec, mbhc_micb_regs->cfilt_ctl, cfilt_mode);
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_HPH, 0x13, 0x00);
if (mbhc->mbhc_cfg->do_recalibration) {
/* recalibrate dce_z and sta_z */
reg = snd_soc_read(codec, WCD9XXX_A_CDC_MBHC_B1_CTL);
change = snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL,
0x78, btn_det->mbhc_nsc << 3);
wcd9xxx_get_z(mbhc, &dce_z, &sta_z, mbhc_micb_regs, true);
if (change)
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_B1_CTL, reg);
if (dce_z && sta_z) {
pr_debug("%s: sta_z 0x%x -> 0x%x, dce_z 0x%x -> 0x%x\n",
__func__,
mbhc->mbhc_data.sta_z, sta_z & 0xffff,
mbhc->mbhc_data.dce_z, dce_z & 0xffff);
mbhc->mbhc_data.dce_z = dce_z;
mbhc->mbhc_data.sta_z = sta_z;
wcd9xxx_mbhc_calc_thres(mbhc);
wcd9xxx_calibrate_hs_polling(mbhc);
} else {
pr_warn("%s: failed get new dce_z/sta_z 0x%x/0x%x\n",
__func__, dce_z, sta_z);
}
if (is_cs_enable) {
/* recalibrate dce_nsc_cs_z */
reg = snd_soc_read(mbhc->codec,
WCD9XXX_A_CDC_MBHC_B1_CTL);
snd_soc_update_bits(mbhc->codec,
WCD9XXX_A_CDC_MBHC_B1_CTL,
0x78, WCD9XXX_MBHC_NSC_CS << 3);
wcd9xxx_get_z(mbhc, &dce_z, NULL, mbhc_micb_regs,
true);
snd_soc_write(mbhc->codec, WCD9XXX_A_CDC_MBHC_B1_CTL,
reg);
if (dce_z) {
pr_debug("%s: dce_nsc_cs_z 0x%x -> 0x%x\n",
__func__, mbhc->mbhc_data.dce_nsc_cs_z,
dce_z & 0xffff);
mbhc->mbhc_data.dce_nsc_cs_z = dce_z;
} else {
pr_debug("%s: failed get new dce_nsc_cs_z\n",
__func__);
}
}
}
return bias_value;
}
static void wcd9xxx_shutdown_hs_removal_detect(struct wcd9xxx_mbhc *mbhc)
{
struct snd_soc_codec *codec = mbhc->codec;
const struct wcd9xxx_mbhc_general_cfg *generic =
WCD9XXX_MBHC_CAL_GENERAL_PTR(mbhc->mbhc_cfg->calibration);
/* Need MBHC clock */
WCD9XXX_BG_CLK_LOCK(mbhc->resmgr);
wcd9xxx_resmgr_get_clk_block(mbhc->resmgr, WCD9XXX_CLK_RCO);
WCD9XXX_BG_CLK_UNLOCK(mbhc->resmgr);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x2, 0x2);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL, 0x6, 0x0);
__wcd9xxx_switch_micbias(mbhc, 0, false, false);
usleep_range(generic->t_shutdown_plug_rem,
generic->t_shutdown_plug_rem);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0xA, 0x8);
WCD9XXX_BG_CLK_LOCK(mbhc->resmgr);
/* Put requested CLK back */
wcd9xxx_resmgr_put_clk_block(mbhc->resmgr, WCD9XXX_CLK_RCO);
WCD9XXX_BG_CLK_UNLOCK(mbhc->resmgr);
snd_soc_write(codec, WCD9XXX_A_MBHC_SCALING_MUX_1, 0x00);
}
static void wcd9xxx_cleanup_hs_polling(struct wcd9xxx_mbhc *mbhc)
{
pr_debug("%s: enter\n", __func__);
WCD9XXX_BCL_ASSERT_LOCKED(mbhc->resmgr);
wcd9xxx_shutdown_hs_removal_detect(mbhc);
/* Disable external voltage source to micbias if present */
if (mbhc->mbhc_cb && mbhc->mbhc_cb->enable_mb_source)
mbhc->mbhc_cb->enable_mb_source(mbhc->codec, false, true);
mbhc->polling_active = false;
mbhc->mbhc_state = MBHC_STATE_NONE;
pr_debug("%s: leave\n", __func__);
}
/* called under codec_resource_lock acquisition */
static void wcd9xxx_codec_hphr_gnd_switch(struct snd_soc_codec *codec, bool on)
{
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_HPH, 0x01, on);
if (on)
usleep_range(5000, 5000);
}
static void wcd9xxx_onoff_vddio_switch(struct wcd9xxx_mbhc *mbhc, bool on)
{
pr_debug("%s: vddio %d\n", __func__, on);
if (mbhc->mbhc_cb && mbhc->mbhc_cb->pull_mb_to_vddio) {
mbhc->mbhc_cb->pull_mb_to_vddio(mbhc->codec, on);
goto exit;
}
if (on) {
snd_soc_update_bits(mbhc->codec, mbhc->mbhc_bias_regs.mbhc_reg,
1 << 7, 1 << 7);
snd_soc_update_bits(mbhc->codec, WCD9XXX_A_MAD_ANA_CTRL,
1 << 4, 0);
} else {
snd_soc_update_bits(mbhc->codec, WCD9XXX_A_MAD_ANA_CTRL,
1 << 4, 1 << 4);
snd_soc_update_bits(mbhc->codec, mbhc->mbhc_bias_regs.mbhc_reg,
1 << 7, 0);
}
exit:
/*
* Wait for the micbias to settle down to vddio
* when the micbias to vddio switch is enabled.
*/
if (on)
usleep_range(10000, 10000);
}
static int wcd9xxx_hphl_status(struct wcd9xxx_mbhc *mbhc)
{
u16 hph, status;
struct snd_soc_codec *codec = mbhc->codec;
WCD9XXX_BCL_ASSERT_LOCKED(mbhc->resmgr);
hph = snd_soc_read(codec, WCD9XXX_A_MBHC_HPH);
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_HPH, 0x12, 0x02);
usleep_range(WCD9XXX_HPHL_STATUS_READY_WAIT_US,
WCD9XXX_HPHL_STATUS_READY_WAIT_US +
WCD9XXX_USLEEP_RANGE_MARGIN_US);
status = snd_soc_read(codec, WCD9XXX_A_RX_HPH_L_STATUS);
snd_soc_write(codec, WCD9XXX_A_MBHC_HPH, hph);
return status;
}
static enum wcd9xxx_mbhc_plug_type
wcd9xxx_cs_find_plug_type(struct wcd9xxx_mbhc *mbhc,
struct wcd9xxx_mbhc_detect *dt, const int size,
bool highhph,
unsigned long event_state)
{
int i;
int vdce, mb_mv;
int ch, sz, delta_thr;
int minv = 0, maxv = INT_MIN;
struct wcd9xxx_mbhc_detect *d = dt;
struct wcd9xxx_mbhc_detect *dprev = d, *dmicbias = NULL, *dgnd = NULL;
enum wcd9xxx_mbhc_plug_type type = PLUG_TYPE_INVALID;
const struct wcd9xxx_mbhc_plug_type_cfg *plug_type =
WCD9XXX_MBHC_CAL_PLUG_TYPE_PTR(mbhc->mbhc_cfg->calibration);
s16 hs_max, no_mic, dce_z;
int highhph_cnt = 0;
pr_debug("%s: enter\n", __func__);
pr_debug("%s: event_state 0x%lx\n", __func__, event_state);
sz = size - 1;
for (i = 0, d = dt, ch = 0; i < sz; i++, d++) {
if (d->mic_bias) {
dce_z = mbhc->mbhc_data.dce_z;
mb_mv = mbhc->mbhc_data.micb_mv;
hs_max = plug_type->v_hs_max;
no_mic = plug_type->v_no_mic;
} else {
dce_z = mbhc->mbhc_data.dce_nsc_cs_z;
mb_mv = VDDIO_MICBIAS_MV;
hs_max = WCD9XXX_V_CS_HS_MAX;
no_mic = WCD9XXX_V_CS_NO_MIC;
}
vdce = __wcd9xxx_codec_sta_dce_v(mbhc, true, d->dce,
dce_z, (u32)mb_mv);
d->_vdces = vdce;
if (d->_vdces < no_mic)
d->_type = PLUG_TYPE_HEADPHONE;
else if (d->_vdces >= hs_max) {
d->_type = PLUG_TYPE_HIGH_HPH;
highhph_cnt++;
} else
d->_type = PLUG_TYPE_HEADSET;
pr_debug("%s: DCE #%d, %04x, V %04d(%04d), HPHL %d TYPE %d\n",
__func__, i, d->dce, vdce, d->_vdces,
d->hphl_status & 0x01,
d->_type);
ch += d->hphl_status & 0x01;
if (!d->swap_gnd && !d->mic_bias) {
if (maxv < d->_vdces)
maxv = d->_vdces;
if (!minv || minv > d->_vdces)
minv = d->_vdces;
}
if ((!d->mic_bias &&
(d->_vdces >= WCD9XXX_CS_MEAS_INVALD_RANGE_LOW_MV &&
d->_vdces <= WCD9XXX_CS_MEAS_INVALD_RANGE_HIGH_MV)) ||
(d->mic_bias &&
(d->_vdces >= WCD9XXX_MEAS_INVALD_RANGE_LOW_MV &&
d->_vdces <= WCD9XXX_MEAS_INVALD_RANGE_HIGH_MV))) {
pr_debug("%s: within invalid range\n", __func__);
type = PLUG_TYPE_INVALID;
goto exit;
}
}
delta_thr = ((highhph_cnt == sz) || highhph) ?
WCD9XXX_MB_MEAS_DELTA_MAX_MV :
WCD9XXX_CS_MEAS_DELTA_MAX_MV;
for (i = 0, d = dt; i < sz; i++, d++) {
if ((i > 0) && !d->mic_bias && !d->swap_gnd &&
(d->_type != dprev->_type)) {
pr_debug("%s: Invalid, inconsistent types\n", __func__);
type = PLUG_TYPE_INVALID;
goto exit;
}
if (!d->swap_gnd && !d->mic_bias &&
(abs(minv - d->_vdces) > delta_thr ||
abs(maxv - d->_vdces) > delta_thr)) {
pr_debug("%s: Invalid, delta %dmv, %dmv and %dmv\n",
__func__, d->_vdces, minv, maxv);
type = PLUG_TYPE_INVALID;
goto exit;
} else if (d->swap_gnd) {
dgnd = d;
}
if (!d->mic_bias && !d->swap_gnd)
dprev = d;
else if (d->mic_bias)
dmicbias = d;
}
if (dgnd && dt->_type != PLUG_TYPE_HEADSET &&
dt->_type != dgnd->_type) {
pr_debug("%s: Invalid, inconsistent types\n", __func__);
type = PLUG_TYPE_INVALID;
goto exit;
}
type = dt->_type;
if (dmicbias) {
if (dmicbias->_type == PLUG_TYPE_HEADSET &&
(dt->_type == PLUG_TYPE_HIGH_HPH ||
dt->_type == PLUG_TYPE_HEADSET)) {
type = PLUG_TYPE_HEADSET;
if (dt->_type == PLUG_TYPE_HIGH_HPH) {
pr_debug("%s: Headset with threshold on MIC detected\n",
__func__);
if (mbhc->mbhc_cfg->micbias_enable_flags &
(1 << MBHC_MICBIAS_ENABLE_THRESHOLD_HEADSET))
mbhc->micbias_enable = true;
}
}
}
if (type == PLUG_TYPE_HEADSET && dgnd && !dgnd->mic_bias) {
/* if plug type is Headphone report as GND_MIC_SWAP */
if (dgnd->_type == PLUG_TYPE_HEADPHONE) {
pr_debug("%s: GND_MIC_SWAP\n", __func__);
type = PLUG_TYPE_GND_MIC_SWAP;
/*
* if type is GND_MIC_SWAP we should not check
* HPHL status hence goto exit
*/
goto exit;
} else if (dgnd->_type != PLUG_TYPE_HEADSET && !dmicbias) {
pr_debug("%s: Invalid, inconsistent types\n", __func__);
type = PLUG_TYPE_INVALID;
}
}
if (event_state & (1 << MBHC_EVENT_PA_HPHL)) {
pr_debug("%s: HPHL PA was ON\n", __func__);
} else if (ch != sz && ch > 0) {
pr_debug("%s: Invalid, inconsistent HPHL..\n", __func__);
type = PLUG_TYPE_INVALID;
goto exit;
}
if (!(event_state & (1UL << MBHC_EVENT_PA_HPHL))) {
if (((type == PLUG_TYPE_HEADSET ||
type == PLUG_TYPE_HEADPHONE) && ch != sz)) {
pr_debug("%s: Invalid, not fully inserted, TYPE %d\n",
__func__, type);
type = PLUG_TYPE_INVALID;
}
}
if (type == PLUG_TYPE_HEADSET &&
(mbhc->mbhc_cfg->micbias_enable_flags &
(1 << MBHC_MICBIAS_ENABLE_REGULAR_HEADSET)))
mbhc->micbias_enable = true;
exit:
pr_debug("%s: Plug type %d detected\n", __func__, type);
return type;
}
/*
* wcd9xxx_find_plug_type : Find out and return the best plug type with given
* list of wcd9xxx_mbhc_detect structure.
* param mbhc wcd9xxx_mbhc structure
* param dt collected measurements
* param size array size of dt
* param event_state mbhc->event_state when dt is collected
*/
static enum wcd9xxx_mbhc_plug_type
wcd9xxx_find_plug_type(struct wcd9xxx_mbhc *mbhc,
struct wcd9xxx_mbhc_detect *dt, const int size,
unsigned long event_state)
{
int i;
int ch;
enum wcd9xxx_mbhc_plug_type type;
int vdce;
struct wcd9xxx_mbhc_detect *d, *dprev, *dgnd = NULL, *dvddio = NULL;
int maxv = 0, minv = 0;
const struct wcd9xxx_mbhc_plug_type_cfg *plug_type =
WCD9XXX_MBHC_CAL_PLUG_TYPE_PTR(mbhc->mbhc_cfg->calibration);
const s16 hs_max = plug_type->v_hs_max;
const s16 no_mic = plug_type->v_no_mic;
pr_debug("%s: event_state 0x%lx\n", __func__, event_state);
for (i = 0, d = dt, ch = 0; i < size; i++, d++) {
vdce = wcd9xxx_codec_sta_dce_v(mbhc, true, d->dce);
if (d->vddio)
d->_vdces = scale_v_micb_vddio(mbhc, vdce, false);
else
d->_vdces = vdce;
if (d->_vdces >= no_mic && d->_vdces < hs_max)
d->_type = PLUG_TYPE_HEADSET;
else if (d->_vdces < no_mic)
d->_type = PLUG_TYPE_HEADPHONE;
else
d->_type = PLUG_TYPE_HIGH_HPH;
ch += d->hphl_status & 0x01;
if (!d->swap_gnd && !d->hwvalue && !d->vddio) {
if (maxv < d->_vdces)
maxv = d->_vdces;
if (!minv || minv > d->_vdces)
minv = d->_vdces;
}
pr_debug("%s: DCE #%d, %04x, V %04d(%04d), GND %d, VDDIO %d, HPHL %d TYPE %d\n",
__func__, i, d->dce, vdce, d->_vdces,
d->swap_gnd, d->vddio, d->hphl_status & 0x01,
d->_type);
/*
* If GND and MIC prongs are aligned to HPHR and GND of
* headphone, codec measures the voltage based on
* impedance between HPHR and GND which results in ~80mv.
* Avoid this.
*/
if (d->_vdces >= WCD9XXX_MEAS_INVALD_RANGE_LOW_MV &&
d->_vdces <= WCD9XXX_MEAS_INVALD_RANGE_HIGH_MV) {
pr_debug("%s: within invalid range\n", __func__);
type = PLUG_TYPE_INVALID;
goto exit;
}
}
if (event_state & (1 << MBHC_EVENT_PA_HPHL)) {
pr_debug("%s: HPHL PA was ON\n", __func__);
} else if (ch != size && ch > 0) {
pr_debug("%s: Invalid, inconsistent HPHL\n", __func__);
type = PLUG_TYPE_INVALID;
goto exit;
}
for (i = 0, dprev = NULL, d = dt; i < size; i++, d++) {
if (d->vddio) {
dvddio = d;
continue;
}
if ((i > 0) && (dprev != NULL) && (d->_type != dprev->_type)) {
pr_debug("%s: Invalid, inconsistent types\n", __func__);
type = PLUG_TYPE_INVALID;
goto exit;
}
if (!d->swap_gnd && !d->hwvalue &&
(abs(minv - d->_vdces) > WCD9XXX_MEAS_DELTA_MAX_MV ||
abs(maxv - d->_vdces) > WCD9XXX_MEAS_DELTA_MAX_MV)) {
pr_debug("%s: Invalid, delta %dmv, %dmv and %dmv\n",
__func__, d->_vdces, minv, maxv);
type = PLUG_TYPE_INVALID;
goto exit;
} else if (d->swap_gnd) {
dgnd = d;
}
dprev = d;
}
WARN_ON(i != size);
type = dt->_type;
if (type == PLUG_TYPE_HEADSET && dgnd) {
if ((dgnd->_vdces + WCD9XXX_GM_SWAP_THRES_MIN_MV <
minv) &&
(dgnd->_vdces + WCD9XXX_GM_SWAP_THRES_MAX_MV >
maxv))
type = PLUG_TYPE_GND_MIC_SWAP;
}
/* if HPHL PA was on, we cannot use hphl status */
if (!(event_state & (1UL << MBHC_EVENT_PA_HPHL))) {
if (((type == PLUG_TYPE_HEADSET ||
type == PLUG_TYPE_HEADPHONE) && ch != size) ||
(type == PLUG_TYPE_GND_MIC_SWAP && ch)) {
pr_debug("%s: Invalid, not fully inserted, TYPE %d\n",
__func__, type);
type = PLUG_TYPE_INVALID;
}
}
if (type == PLUG_TYPE_HEADSET) {
if (dvddio && ((dvddio->_vdces > hs_max) ||
(dvddio->_vdces > minv + WCD9XXX_THRESHOLD_MIC_THRESHOLD))) {
pr_debug("%s: Headset with threshold on MIC detected\n",
__func__);
if (mbhc->mbhc_cfg->micbias_enable_flags &
(1 << MBHC_MICBIAS_ENABLE_THRESHOLD_HEADSET))
mbhc->micbias_enable = true;
} else {
pr_debug("%s: Headset with regular MIC detected\n",
__func__);
if (mbhc->mbhc_cfg->micbias_enable_flags &
(1 << MBHC_MICBIAS_ENABLE_REGULAR_HEADSET))
mbhc->micbias_enable = true;
}
}
exit:
pr_debug("%s: Plug type %d detected, micbias_enable %d\n", __func__,
type, mbhc->micbias_enable);
return type;
}
/*
* Pull down MBHC micbias for provided duration in microsecond.
*/
static int wcd9xxx_pull_down_micbias(struct wcd9xxx_mbhc *mbhc, int us)
{
bool micbiasconn = false;
struct snd_soc_codec *codec = mbhc->codec;
const u16 ctlreg = mbhc->mbhc_bias_regs.ctl_reg;
/*
* Disable MBHC to micbias connection to pull down
* micbias and pull down micbias for a moment.
*/
if ((snd_soc_read(mbhc->codec, ctlreg) & 0x01)) {
WARN_ONCE(1, "MBHC micbias is already pulled down unexpectedly\n");
return -EFAULT;
}
if ((snd_soc_read(mbhc->codec, WCD9XXX_A_MAD_ANA_CTRL) & 1 << 4)) {
snd_soc_update_bits(mbhc->codec, WCD9XXX_A_MAD_ANA_CTRL,
1 << 4, 0);
micbiasconn = true;
}
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.ctl_reg, 0x01, 0x01);
/*
* Pull down for 1ms to discharge bias. Give small margin (10us) to be
* able to get consistent result across DCEs.
*/
usleep_range(1000, 1000 + 10);
if (micbiasconn)
snd_soc_update_bits(mbhc->codec, WCD9XXX_A_MAD_ANA_CTRL,
1 << 4, 1 << 4);
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.ctl_reg, 0x01, 0x00);
usleep_range(us, us + WCD9XXX_USLEEP_RANGE_MARGIN_US);
return 0;
}
void wcd9xxx_turn_onoff_current_source(struct wcd9xxx_mbhc *mbhc,
struct mbhc_micbias_regs *mbhc_micb_regs,
bool on, bool highhph)
{
struct snd_soc_codec *codec;
struct wcd9xxx_mbhc_btn_detect_cfg *btn_det;
const struct wcd9xxx_mbhc_plug_detect_cfg *plug_det =
WCD9XXX_MBHC_CAL_PLUG_DET_PTR(mbhc->mbhc_cfg->calibration);
btn_det = WCD9XXX_MBHC_CAL_BTN_DET_PTR(mbhc->mbhc_cfg->calibration);
codec = mbhc->codec;
if (on) {
pr_debug("%s: enabling current source\n", __func__);
/* Nsc to 9 */
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL,
0x78, 0x48);
/* pull down diode bit to 0 */
snd_soc_update_bits(codec, mbhc_micb_regs->mbhc_reg,
0x01, 0x00);
/*
* Keep the low power insertion/removal
* detection (reg 0x3DD) disabled
*/
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_INT_CTL,
0x01, 0x00);
/*
* Enable the Mic Bias current source
* Write bits[6:5] of register MICB_2_MBHC to 0x3 (V_20_UA)
* Write bit[7] of register MICB_2_MBHC to 1
* (INS_DET_ISRC_EN__ENABLE)
* MICB_2_MBHC__SCHT_TRIG_EN to 1
*/
snd_soc_update_bits(codec, mbhc_micb_regs->mbhc_reg,
0xF0, 0xF0);
/* Disconnect MBHC Override from MicBias and LDOH */
snd_soc_update_bits(codec, WCD9XXX_A_MAD_ANA_CTRL, 0x10, 0x00);
} else {
pr_debug("%s: disabling current source\n", __func__);
/* Connect MBHC Override from MicBias and LDOH */
snd_soc_update_bits(codec, WCD9XXX_A_MAD_ANA_CTRL, 0x10, 0x10);
/* INS_DET_ISRC_CTL to acdb value */
snd_soc_update_bits(codec, mbhc_micb_regs->mbhc_reg,
0x60, plug_det->mic_current << 5);
if (!highhph) {
/* INS_DET_ISRC_EN__ENABLE to 0 */
snd_soc_update_bits(codec,
mbhc_micb_regs->mbhc_reg,
0x80, 0x00);
/* MICB_2_MBHC__SCHT_TRIG_EN to 0 */
snd_soc_update_bits(codec,
mbhc_micb_regs->mbhc_reg,
0x10, 0x00);
}
/* Nsc to acdb value */
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL, 0x78,
btn_det->mbhc_nsc << 3);
}
}
static enum wcd9xxx_mbhc_plug_type
wcd9xxx_codec_cs_get_plug_type(struct wcd9xxx_mbhc *mbhc, bool highhph)
{
struct snd_soc_codec *codec = mbhc->codec;
struct wcd9xxx_mbhc_detect rt[NUM_DCE_PLUG_INS_DETECT];
enum wcd9xxx_mbhc_plug_type type = PLUG_TYPE_INVALID;
int i;
pr_debug("%s: enter\n", __func__);
WCD9XXX_BCL_ASSERT_LOCKED(mbhc->resmgr);
BUG_ON(NUM_DCE_PLUG_INS_DETECT < 4);
wcd9xxx_mbhc_ctrl_clk_bandgap(mbhc, true);
rt[0].swap_gnd = false;
rt[0].vddio = false;
rt[0].hwvalue = true;
rt[0].hphl_status = wcd9xxx_hphl_status(mbhc);
rt[0].dce = wcd9xxx_mbhc_setup_hs_polling(mbhc, &mbhc->mbhc_bias_regs,
true);
rt[0].mic_bias = false;
for (i = 1; i < NUM_DCE_PLUG_INS_DETECT - 1; i++) {
rt[i].swap_gnd = (i == NUM_DCE_PLUG_INS_DETECT - 3);
rt[i].mic_bias = ((i == NUM_DCE_PLUG_INS_DETECT - 4) &&
highhph);
rt[i].hphl_status = wcd9xxx_hphl_status(mbhc);
if (rt[i].swap_gnd)
wcd9xxx_codec_hphr_gnd_switch(codec, true);
if (rt[i].mic_bias)
wcd9xxx_turn_onoff_current_source(mbhc,
&mbhc->mbhc_bias_regs,
false, false);
rt[i].dce = __wcd9xxx_codec_sta_dce(mbhc, 1, !highhph, true);
if (rt[i].mic_bias)
wcd9xxx_turn_onoff_current_source(mbhc,
&mbhc->mbhc_bias_regs,
true, false);
if (rt[i].swap_gnd)
wcd9xxx_codec_hphr_gnd_switch(codec, false);
}
type = wcd9xxx_cs_find_plug_type(mbhc, rt, ARRAY_SIZE(rt), highhph,
mbhc->event_state);
wcd9xxx_mbhc_ctrl_clk_bandgap(mbhc, false);
pr_debug("%s: plug_type:%d\n", __func__, type);
return type;
}
static enum wcd9xxx_mbhc_plug_type
wcd9xxx_codec_get_plug_type(struct wcd9xxx_mbhc *mbhc, bool highhph)
{
int i;
bool vddioon;
struct wcd9xxx_mbhc_plug_type_cfg *plug_type_ptr;
struct wcd9xxx_mbhc_detect rt[NUM_DCE_PLUG_INS_DETECT];
enum wcd9xxx_mbhc_plug_type type = PLUG_TYPE_INVALID;
struct snd_soc_codec *codec = mbhc->codec;
pr_debug("%s: enter\n", __func__);
WCD9XXX_BCL_ASSERT_LOCKED(mbhc->resmgr);
/* make sure override is on */
WARN_ON(!(snd_soc_read(codec, WCD9XXX_A_CDC_MBHC_B1_CTL) & 0x04));
/* GND and MIC swap detection requires at least 2 rounds of DCE */
BUG_ON(NUM_DCE_PLUG_INS_DETECT < 2);
detect_use_vddio_switch = mbhc->mbhc_cfg->use_vddio_meas;
/*
* There are chances vddio switch is on and cfilt voltage is adjusted
* to vddio voltage even after plug type removal reported.
*/
vddioon = __wcd9xxx_switch_micbias(mbhc, 0, false, false);
pr_debug("%s: vddio switch was %s\n", __func__, vddioon ? "on" : "off");
plug_type_ptr =
WCD9XXX_MBHC_CAL_PLUG_TYPE_PTR(mbhc->mbhc_cfg->calibration);
/*
* cfilter in fast mode requires 1ms to charge up and down micbias
* fully.
*/
(void) wcd9xxx_pull_down_micbias(mbhc,
WCD9XXX_MICBIAS_PULLDOWN_SETTLE_US);
wcd9xxx_mbhc_ctrl_clk_bandgap(mbhc, true);
rt[0].hphl_status = wcd9xxx_hphl_status(mbhc);
rt[0].dce = wcd9xxx_mbhc_setup_hs_polling(mbhc, &mbhc->mbhc_bias_regs,
false);
rt[0].swap_gnd = false;
rt[0].vddio = false;
rt[0].hwvalue = true;
for (i = 1; i < NUM_DCE_PLUG_INS_DETECT; i++) {
rt[i].swap_gnd = (i == NUM_DCE_PLUG_INS_DETECT - 2);
if (detect_use_vddio_switch)
rt[i].vddio = (i == 1);
else
rt[i].vddio = false;
rt[i].hphl_status = wcd9xxx_hphl_status(mbhc);
rt[i].hwvalue = false;
if (rt[i].swap_gnd)
wcd9xxx_codec_hphr_gnd_switch(codec, true);
if (rt[i].vddio)
wcd9xxx_onoff_vddio_switch(mbhc, true);
/*
* Pull down micbias to detect headset with mic which has
* threshold and to have more consistent voltage measurements.
*
* cfilter in fast mode requires 1ms to charge up and down
* micbias fully.
*/
(void) wcd9xxx_pull_down_micbias(mbhc,
WCD9XXX_MICBIAS_PULLDOWN_SETTLE_US);
rt[i].dce = __wcd9xxx_codec_sta_dce(mbhc, 1, true, true);
if (rt[i].vddio)
wcd9xxx_onoff_vddio_switch(mbhc, false);
if (rt[i].swap_gnd)
wcd9xxx_codec_hphr_gnd_switch(codec, false);
}
if (vddioon)
__wcd9xxx_switch_micbias(mbhc, 1, false, false);
type = wcd9xxx_find_plug_type(mbhc, rt, ARRAY_SIZE(rt),
mbhc->event_state);
wcd9xxx_mbhc_ctrl_clk_bandgap(mbhc, false);
pr_debug("%s: leave\n", __func__);
return type;
}
static bool wcd9xxx_swch_level_remove(struct wcd9xxx_mbhc *mbhc)
{
if (mbhc->mbhc_cfg->gpio)
return (gpio_get_value_cansleep(mbhc->mbhc_cfg->gpio) !=
mbhc->mbhc_cfg->gpio_level_insert);
else if (mbhc->mbhc_cfg->insert_detect)
return snd_soc_read(mbhc->codec,
WCD9XXX_A_MBHC_INSERT_DET_STATUS) &
(1 << 2);
else
WARN(1, "Invalid jack detection configuration\n");
return true;
}
static bool is_clk_active(struct snd_soc_codec *codec)
{
return !!(snd_soc_read(codec, WCD9XXX_A_CDC_CLK_MCLK_CTL) & 0x05);
}
static int wcd9xxx_enable_hs_detect(struct wcd9xxx_mbhc *mbhc,
int insertion, int trigger, bool padac_off)
{
struct snd_soc_codec *codec = mbhc->codec;
int central_bias_enabled = 0;
const struct wcd9xxx_mbhc_general_cfg *generic =
WCD9XXX_MBHC_CAL_GENERAL_PTR(mbhc->mbhc_cfg->calibration);
const struct wcd9xxx_mbhc_plug_detect_cfg *plug_det =
WCD9XXX_MBHC_CAL_PLUG_DET_PTR(mbhc->mbhc_cfg->calibration);
pr_debug("%s: enter insertion(%d) trigger(0x%x)\n",
__func__, insertion, trigger);
if (!mbhc->mbhc_cfg->calibration) {
pr_err("Error, no wcd9xxx calibration\n");
return -EINVAL;
}
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_INT_CTL, 0x1, 0);
/*
* Make sure mic bias and Mic line schmitt trigger
* are turned OFF
*/
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.ctl_reg, 0x01, 0x01);
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.mbhc_reg, 0x90, 0x00);
if (insertion) {
wcd9xxx_switch_micbias(mbhc, 0);
/* DAPM can manipulate PA/DAC bits concurrently */
if (padac_off == true)
wcd9xxx_set_and_turnoff_hph_padac(mbhc);
if (trigger & MBHC_USE_HPHL_TRIGGER) {
/* Enable HPH Schmitt Trigger */
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_HPH, 0x11,
0x11);
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_HPH, 0x0C,
plug_det->hph_current << 2);
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_HPH, 0x02,
0x02);
}
if (trigger & MBHC_USE_MB_TRIGGER) {
/* enable the mic line schmitt trigger */
snd_soc_update_bits(codec,
mbhc->mbhc_bias_regs.mbhc_reg,
0x60, plug_det->mic_current << 5);
snd_soc_update_bits(codec,
mbhc->mbhc_bias_regs.mbhc_reg,
0x80, 0x80);
usleep_range(plug_det->t_mic_pid, plug_det->t_mic_pid);
snd_soc_update_bits(codec,
mbhc->mbhc_bias_regs.ctl_reg, 0x01,
0x00);
snd_soc_update_bits(codec,
mbhc->mbhc_bias_regs.mbhc_reg,
0x10, 0x10);
}
/* setup for insetion detection */
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_INT_CTL, 0x2, 0);
} else {
pr_debug("setup for removal detection\n");
/* Make sure the HPH schmitt trigger is OFF */
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_HPH, 0x12, 0x00);
/* enable the mic line schmitt trigger */
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.ctl_reg,
0x01, 0x00);
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.mbhc_reg, 0x60,
plug_det->mic_current << 5);
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.mbhc_reg,
0x80, 0x80);
usleep_range(plug_det->t_mic_pid, plug_det->t_mic_pid);
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.mbhc_reg,
0x10, 0x10);
/* Setup for low power removal detection */
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_INT_CTL, 0x2,
0x2);
}
if (snd_soc_read(codec, WCD9XXX_A_CDC_MBHC_B1_CTL) & 0x4) {
/* called by interrupt */
if (!is_clk_active(codec)) {
wcd9xxx_resmgr_enable_config_mode(mbhc->resmgr, 1);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL,
0x06, 0);
usleep_range(generic->t_shutdown_plug_rem,
generic->t_shutdown_plug_rem);
wcd9xxx_resmgr_enable_config_mode(mbhc->resmgr, 0);
} else
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL,
0x06, 0);
}
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.int_rbias, 0x80, 0);
/* If central bandgap disabled */
if (!(snd_soc_read(codec, WCD9XXX_A_PIN_CTL_OE1) & 1)) {
snd_soc_update_bits(codec, WCD9XXX_A_PIN_CTL_OE1, 0x3, 0x3);
usleep_range(generic->t_bg_fast_settle,
generic->t_bg_fast_settle);
central_bias_enabled = 1;
}
/* If LDO_H disabled */
if (snd_soc_read(codec, WCD9XXX_A_PIN_CTL_OE0) & 0x80) {
snd_soc_update_bits(codec, WCD9XXX_A_PIN_CTL_OE0, 0x10, 0);
snd_soc_update_bits(codec, WCD9XXX_A_PIN_CTL_OE0, 0x80, 0x80);
usleep_range(generic->t_ldoh, generic->t_ldoh);
snd_soc_update_bits(codec, WCD9XXX_A_PIN_CTL_OE0, 0x80, 0);
if (central_bias_enabled)
snd_soc_update_bits(codec, WCD9XXX_A_PIN_CTL_OE1, 0x1,
0);
}
if (mbhc->resmgr->reg_addr && mbhc->resmgr->reg_addr->micb_4_mbhc)
snd_soc_update_bits(codec, mbhc->resmgr->reg_addr->micb_4_mbhc,
0x3, mbhc->mbhc_cfg->micbias);
wcd9xxx_enable_irq(mbhc->resmgr->core_res, mbhc->intr_ids->insertion);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_INT_CTL, 0x1, 0x1);
pr_debug("%s: leave\n", __func__);
return 0;
}
/*
* Function to determine whether anc microphone is preset or not.
* Return true if anc microphone is detected or false if not detected.
*/
static bool wcd9xxx_detect_anc_plug_type(struct wcd9xxx_mbhc *mbhc)
{
struct wcd9xxx_mbhc_detect rt[NUM_DCE_PLUG_INS_DETECT - 1];
bool anc_mic_found = true;
int i, mb_mv;
const struct wcd9xxx_mbhc_plug_type_cfg *plug_type =
WCD9XXX_MBHC_CAL_PLUG_TYPE_PTR(mbhc->mbhc_cfg->calibration);
s16 hs_max, dce_z;
s16 no_mic;
bool override_en;
bool timedout;
unsigned long timeout, retry = 0;
enum wcd9xxx_mbhc_plug_type type;
bool cs_enable;
if (mbhc->mbhc_cfg->anc_micbias != MBHC_MICBIAS3 &&
mbhc->mbhc_cfg->anc_micbias != MBHC_MICBIAS2)
return false;
pr_debug("%s: enter\n", __func__);
override_en = (snd_soc_read(mbhc->codec, WCD9XXX_A_CDC_MBHC_B1_CTL) &
0x04) ? true : false;
cs_enable = ((mbhc->mbhc_cfg->cs_enable_flags &
(1 << MBHC_CS_ENABLE_DET_ANC)) != 0) &&
(!(snd_soc_read(mbhc->codec,
mbhc->mbhc_anc_bias_regs.ctl_reg) & 0x80)) &&
(mbhc->mbhc_cfg->micbias != mbhc->mbhc_cfg->anc_micbias);
if (cs_enable) {
wcd9xxx_turn_onoff_current_source(mbhc,
&mbhc->mbhc_anc_bias_regs,
true, false);
} else {
if (mbhc->mbhc_cfg->anc_micbias == MBHC_MICBIAS3) {
if (mbhc->micbias_enable_cb)
mbhc->micbias_enable_cb(mbhc->codec, true,
mbhc->mbhc_cfg->anc_micbias);
else
return false;
} else {
/* Enable override */
if (!override_en)
wcd9xxx_turn_onoff_override(mbhc, true);
}
}
if (!cs_enable) {
hs_max = plug_type->v_hs_max;
no_mic = plug_type->v_no_mic;
dce_z = mbhc->mbhc_data.dce_z;
mb_mv = mbhc->mbhc_data.micb_mv;
} else {
hs_max = WCD9XXX_V_CS_HS_MAX;
no_mic = WCD9XXX_V_CS_NO_MIC;
mb_mv = VDDIO_MICBIAS_MV;
dce_z = mbhc->mbhc_data.dce_nsc_cs_z;
}
wcd9xxx_mbhc_ctrl_clk_bandgap(mbhc, true);
timeout = jiffies + msecs_to_jiffies(ANC_HPH_DETECT_PLUG_TIME_MS);
anc_mic_found = true;
while (!(timedout = time_after(jiffies, timeout))) {
retry++;
if (wcd9xxx_swch_level_remove(mbhc)) {
pr_debug("%s: Switch level is low\n", __func__);
anc_mic_found = false;
break;
}
pr_debug("%s: Retry attempt %lu", __func__, retry - 1);
rt[0].hphl_status = wcd9xxx_hphl_status(mbhc);
rt[0].dce = wcd9xxx_mbhc_setup_hs_polling(mbhc,
&mbhc->mbhc_anc_bias_regs,
cs_enable);
rt[0]._vdces = __wcd9xxx_codec_sta_dce_v(mbhc, true, rt[0].dce,
dce_z, (u32)mb_mv);
if (rt[0]._vdces >= no_mic && rt[0]._vdces < hs_max)
rt[0]._type = PLUG_TYPE_HEADSET;
else if (rt[0]._vdces < no_mic)
rt[0]._type = PLUG_TYPE_HEADPHONE;
else
rt[0]._type = PLUG_TYPE_HIGH_HPH;
pr_debug("%s: DCE #%d, V %04d, HPHL %d TYPE %d\n",
__func__, 0, rt[0]._vdces,
rt[0].hphl_status & 0x01,
rt[0]._type);
for (i = 1; i < NUM_DCE_PLUG_INS_DETECT - 1; i++) {
rt[i].dce = __wcd9xxx_codec_sta_dce(mbhc, 1,
true, true);
rt[i]._vdces = __wcd9xxx_codec_sta_dce_v(mbhc, true,
rt[i].dce, dce_z,
(u32) mb_mv);
if (rt[i]._vdces >= no_mic && rt[i]._vdces < hs_max)
rt[i]._type = PLUG_TYPE_HEADSET;
else if (rt[i]._vdces < no_mic)
rt[i]._type = PLUG_TYPE_HEADPHONE;
else
rt[i]._type = PLUG_TYPE_HIGH_HPH;
rt[i].hphl_status = wcd9xxx_hphl_status(mbhc);
pr_debug("%s: DCE #%d, V %04d, HPHL %d TYPE %d\n",
__func__, i, rt[i]._vdces,
rt[i].hphl_status & 0x01,
rt[i]._type);
}
/*
* Check for the "type" of all the 4 measurements
* If all 4 measurements have the Type as PLUG_TYPE_HEADSET
* then it is proper mic and declare that the plug has two mics
*/
for (i = 0; i < NUM_DCE_PLUG_INS_DETECT - 1; i++) {
if (i > 0 && (rt[i - 1]._type != rt[i]._type)) {
type = PLUG_TYPE_INVALID;
break;
} else {
type = rt[0]._type;
}
}
pr_debug("%s: Plug type found in ANC detection :%d",
__func__, type);
if (type != PLUG_TYPE_HEADSET)
anc_mic_found = false;
if (anc_mic_found || (type == PLUG_TYPE_HEADPHONE &&
mbhc->mbhc_cfg->hw_jack_type == FIVE_POLE_JACK) ||
(type == PLUG_TYPE_HIGH_HPH &&
mbhc->mbhc_cfg->hw_jack_type == SIX_POLE_JACK))
break;
}
wcd9xxx_mbhc_ctrl_clk_bandgap(mbhc, false);
if (cs_enable) {
wcd9xxx_turn_onoff_current_source(mbhc,
&mbhc->mbhc_anc_bias_regs,
false, false);
} else {
if (mbhc->mbhc_cfg->anc_micbias == MBHC_MICBIAS3) {
if (mbhc->micbias_enable_cb)
mbhc->micbias_enable_cb(mbhc->codec, false,
mbhc->mbhc_cfg->anc_micbias);
} else {
/* Disable override */
if (!override_en)
wcd9xxx_turn_onoff_override(mbhc, false);
}
}
pr_debug("%s: leave\n", __func__);
return anc_mic_found;
}
/* called under codec_resource_lock acquisition */
static void wcd9xxx_find_plug_and_report(struct wcd9xxx_mbhc *mbhc,
enum wcd9xxx_mbhc_plug_type plug_type)
{
bool anc_mic_found = false;
pr_debug("%s: enter current_plug(%d) new_plug(%d)\n",
__func__, mbhc->current_plug, plug_type);
WCD9XXX_BCL_ASSERT_LOCKED(mbhc->resmgr);
if (plug_type == PLUG_TYPE_HEADPHONE &&
mbhc->current_plug == PLUG_TYPE_NONE) {
/*
* Nothing was reported previously
* report a headphone or unsupported
*/
wcd9xxx_report_plug(mbhc, 1, SND_JACK_HEADPHONE);
wcd9xxx_cleanup_hs_polling(mbhc);
} else if (plug_type == PLUG_TYPE_GND_MIC_SWAP) {
if (!mbhc->mbhc_cfg->detect_extn_cable) {
if (mbhc->current_plug == PLUG_TYPE_HEADSET)
wcd9xxx_report_plug(mbhc, 0,
SND_JACK_HEADSET);
else if (mbhc->current_plug == PLUG_TYPE_HEADPHONE)
wcd9xxx_report_plug(mbhc, 0,
SND_JACK_HEADPHONE);
}
wcd9xxx_report_plug(mbhc, 1, SND_JACK_UNSUPPORTED);
wcd9xxx_cleanup_hs_polling(mbhc);
} else if (plug_type == PLUG_TYPE_HEADSET) {
if (mbhc->mbhc_cfg->enable_anc_mic_detect) {
/*
* Do not report Headset, because at this point
* it could be a ANC headphone having two mics.
* So, proceed further to detect if there is a
* second mic.
*/
mbhc->scaling_mux_in = 0x08;
anc_mic_found = wcd9xxx_detect_anc_plug_type(mbhc);
}
if (anc_mic_found) {
/* Report ANC headphone */
wcd9xxx_report_plug(mbhc, 1, SND_JACK_ANC_HEADPHONE);
} else {
/*
* If Headphone was reported previously, this will
* only report the mic line
*/
wcd9xxx_report_plug(mbhc, 1, SND_JACK_HEADSET);
}
/* Button detection required RC oscillator */
wcd9xxx_mbhc_ctrl_clk_bandgap(mbhc, true);
/*
* sleep so that audio path completely tears down
* before report plug insertion to the user space
*/
msleep(100);
/*
* if PA is already on, switch micbias
* source to VDDIO
*/
if (mbhc->event_state &
(1 << MBHC_EVENT_PA_HPHL | 1 << MBHC_EVENT_PA_HPHR))
__wcd9xxx_switch_micbias(mbhc, 1, false,
false);
wcd9xxx_start_hs_polling(mbhc);
} else if (plug_type == PLUG_TYPE_HIGH_HPH) {
if (mbhc->mbhc_cfg->detect_extn_cable) {
/* High impedance device found. Report as LINEOUT*/
if (mbhc->current_plug == PLUG_TYPE_NONE)
wcd9xxx_report_plug(mbhc, 1, SND_JACK_LINEOUT);
wcd9xxx_cleanup_hs_polling(mbhc);
pr_debug("%s: setup mic trigger for further detection\n",
__func__);
mbhc->lpi_enabled = true;
/*
* Do not enable HPHL trigger. If playback is active,
* it might lead to continuous false HPHL triggers
*/
wcd9xxx_enable_hs_detect(mbhc, 1, MBHC_USE_MB_TRIGGER,
false);
} else {
if (mbhc->current_plug == PLUG_TYPE_NONE)
wcd9xxx_report_plug(mbhc, 1,
SND_JACK_HEADPHONE);
wcd9xxx_cleanup_hs_polling(mbhc);
pr_debug("setup mic trigger for further detection\n");
mbhc->lpi_enabled = true;
wcd9xxx_enable_hs_detect(mbhc, 1, MBHC_USE_MB_TRIGGER |
MBHC_USE_HPHL_TRIGGER,
false);
}
} else {
WARN(1, "Unexpected current plug_type %d, plug_type %d\n",
mbhc->current_plug, plug_type);
}
pr_debug("%s: leave\n", __func__);
}
/* called under codec_resource_lock acquisition */
static void wcd9xxx_mbhc_decide_swch_plug(struct wcd9xxx_mbhc *mbhc)
{
enum wcd9xxx_mbhc_plug_type plug_type;
bool current_source_enable;
pr_debug("%s: enter\n", __func__);
WCD9XXX_BCL_ASSERT_LOCKED(mbhc->resmgr);
current_source_enable = (((mbhc->mbhc_cfg->cs_enable_flags &
(1 << MBHC_CS_ENABLE_INSERTION)) != 0) &&
(!(snd_soc_read(mbhc->codec,
mbhc->mbhc_bias_regs.ctl_reg) & 0x80)));
mbhc->scaling_mux_in = 0x04;
if (current_source_enable) {
wcd9xxx_turn_onoff_current_source(mbhc, &mbhc->mbhc_bias_regs,
true, false);
plug_type = wcd9xxx_codec_cs_get_plug_type(mbhc, false);
wcd9xxx_turn_onoff_current_source(mbhc, &mbhc->mbhc_bias_regs,
false, false);
} else {
wcd9xxx_turn_onoff_override(mbhc, true);
plug_type = wcd9xxx_codec_get_plug_type(mbhc, true);
wcd9xxx_turn_onoff_override(mbhc, false);
}
if (wcd9xxx_swch_level_remove(mbhc)) {
pr_debug("%s: Switch level is low when determining plug\n",
__func__);
return;
}
if (plug_type == PLUG_TYPE_INVALID ||
plug_type == PLUG_TYPE_GND_MIC_SWAP) {
wcd9xxx_cleanup_hs_polling(mbhc);
wcd9xxx_schedule_hs_detect_plug(mbhc,
&mbhc->correct_plug_swch);
} else if (plug_type == PLUG_TYPE_HEADPHONE) {
wcd9xxx_report_plug(mbhc, 1, SND_JACK_HEADPHONE);
wcd9xxx_cleanup_hs_polling(mbhc);
wcd9xxx_schedule_hs_detect_plug(mbhc,
&mbhc->correct_plug_swch);
} else if (plug_type == PLUG_TYPE_HIGH_HPH) {
wcd9xxx_cleanup_hs_polling(mbhc);
wcd9xxx_schedule_hs_detect_plug(mbhc,
&mbhc->correct_plug_swch);
} else {
pr_debug("%s: Valid plug found, determine plug type %d\n",
__func__, plug_type);
wcd9xxx_find_plug_and_report(mbhc, plug_type);
}
pr_debug("%s: leave\n", __func__);
}
/* called under codec_resource_lock acquisition */
static void wcd9xxx_mbhc_detect_plug_type(struct wcd9xxx_mbhc *mbhc)
{
pr_debug("%s: enter\n", __func__);
WCD9XXX_BCL_ASSERT_LOCKED(mbhc->resmgr);
if (wcd9xxx_swch_level_remove(mbhc))
pr_debug("%s: Switch level low when determining plug\n",
__func__);
else
wcd9xxx_mbhc_decide_swch_plug(mbhc);
pr_debug("%s: leave\n", __func__);
}
/* called only from interrupt which is under codec_resource_lock acquisition */
static void wcd9xxx_hs_insert_irq_swch(struct wcd9xxx_mbhc *mbhc,
bool is_removal)
{
if (!is_removal) {
pr_debug("%s: MIC trigger insertion interrupt\n", __func__);
rmb();
if (mbhc->lpi_enabled)
msleep(100);
rmb();
if (!mbhc->lpi_enabled) {
pr_debug("%s: lpi is disabled\n", __func__);
} else if (!wcd9xxx_swch_level_remove(mbhc)) {
pr_debug("%s: Valid insertion, detect plug type\n",
__func__);
wcd9xxx_mbhc_decide_swch_plug(mbhc);
} else {
pr_debug("%s: Invalid insertion stop plug detection\n",
__func__);
}
} else if (mbhc->mbhc_cfg->detect_extn_cable) {
pr_debug("%s: Removal\n", __func__);
if (!wcd9xxx_swch_level_remove(mbhc)) {
/*
* Switch indicates, something is still inserted.
* This could be extension cable i.e. headset is
* removed from extension cable.
*/
/* cancel detect plug */
wcd9xxx_cancel_hs_detect_plug(mbhc,
&mbhc->correct_plug_swch);
wcd9xxx_mbhc_decide_swch_plug(mbhc);
}
} else {
pr_err("%s: Switch IRQ used, invalid MBHC Removal\n", __func__);
}
}
static bool is_valid_mic_voltage(struct wcd9xxx_mbhc *mbhc, s32 mic_mv,
bool cs_enable)
{
const struct wcd9xxx_mbhc_plug_type_cfg *plug_type =
WCD9XXX_MBHC_CAL_PLUG_TYPE_PTR(mbhc->mbhc_cfg->calibration);
const s16 v_hs_max = wcd9xxx_get_current_v_hs_max(mbhc);
if (cs_enable)
return ((mic_mv > WCD9XXX_V_CS_NO_MIC) &&
(mic_mv < WCD9XXX_V_CS_HS_MAX)) ? true : false;
else
return (!(mic_mv > WCD9XXX_MEAS_INVALD_RANGE_LOW_MV &&
mic_mv < WCD9XXX_MEAS_INVALD_RANGE_HIGH_MV) &&
(mic_mv > plug_type->v_no_mic) &&
(mic_mv < v_hs_max)) ? true : false;
}
/*
* called under codec_resource_lock acquisition
* returns true if mic voltage range is back to normal insertion
* returns false either if timedout or removed
*/
static bool wcd9xxx_hs_remove_settle(struct wcd9xxx_mbhc *mbhc)
{
int i;
bool timedout, settled = false;
s32 mic_mv[NUM_DCE_PLUG_DETECT];
short mb_v[NUM_DCE_PLUG_DETECT];
unsigned long retry = 0, timeout;
bool cs_enable;
cs_enable = (((mbhc->mbhc_cfg->cs_enable_flags &
(1 << MBHC_CS_ENABLE_REMOVAL)) != 0) &&
(!(snd_soc_read(mbhc->codec,
mbhc->mbhc_bias_regs.ctl_reg) & 0x80)));
if (cs_enable)
wcd9xxx_turn_onoff_current_source(mbhc, &mbhc->mbhc_bias_regs,
true, false);
timeout = jiffies + msecs_to_jiffies(HS_DETECT_PLUG_TIME_MS);
while (!(timedout = time_after(jiffies, timeout))) {
retry++;
if (wcd9xxx_swch_level_remove(mbhc)) {
pr_debug("%s: Switch indicates removal\n", __func__);
break;
}
if (retry > 1)
msleep(250);
else
msleep(50);
if (wcd9xxx_swch_level_remove(mbhc)) {
pr_debug("%s: Switch indicates removal\n", __func__);
break;
}
if (cs_enable) {
for (i = 0; i < NUM_DCE_PLUG_DETECT; i++) {
mb_v[i] = __wcd9xxx_codec_sta_dce(mbhc, 1,
true, true);
mic_mv[i] = __wcd9xxx_codec_sta_dce_v(mbhc,
true,
mb_v[i],
mbhc->mbhc_data.dce_nsc_cs_z,
(u32)VDDIO_MICBIAS_MV);
pr_debug("%s : DCE run %lu, mic_mv = %d(%x)\n",
__func__, retry, mic_mv[i], mb_v[i]);
}
} else {
for (i = 0; i < NUM_DCE_PLUG_DETECT; i++) {
mb_v[i] = wcd9xxx_codec_sta_dce(mbhc, 1,
true);
mic_mv[i] = wcd9xxx_codec_sta_dce_v(mbhc, 1,
mb_v[i]);
pr_debug("%s : DCE run %lu, mic_mv = %d(%x)\n",
__func__, retry, mic_mv[i],
mb_v[i]);
}
}
if (wcd9xxx_swch_level_remove(mbhc)) {
pr_debug("%s: Switcn indicates removal\n", __func__);
break;
}
if (mbhc->current_plug == PLUG_TYPE_NONE) {
pr_debug("%s : headset/headphone is removed\n",
__func__);
break;
}
for (i = 0; i < NUM_DCE_PLUG_DETECT; i++)
if (!is_valid_mic_voltage(mbhc, mic_mv[i], cs_enable))
break;
if (i == NUM_DCE_PLUG_DETECT) {
pr_debug("%s: MIC voltage settled\n", __func__);
settled = true;
msleep(200);
break;
}
}
if (cs_enable)
wcd9xxx_turn_onoff_current_source(mbhc, &mbhc->mbhc_bias_regs,
false, false);
if (timedout)
pr_debug("%s: Microphone did not settle in %d seconds\n",
__func__, HS_DETECT_PLUG_TIME_MS);
return settled;
}
/* called only from interrupt which is under codec_resource_lock acquisition */
static void wcd9xxx_hs_remove_irq_swch(struct wcd9xxx_mbhc *mbhc)
{
pr_debug("%s: enter\n", __func__);
if (wcd9xxx_hs_remove_settle(mbhc))
wcd9xxx_start_hs_polling(mbhc);
pr_debug("%s: leave\n", __func__);
}
/* called only from interrupt which is under codec_resource_lock acquisition */
static void wcd9xxx_hs_remove_irq_noswch(struct wcd9xxx_mbhc *mbhc)
{
s16 dce, dcez;
unsigned long timeout;
bool removed = true;
struct snd_soc_codec *codec = mbhc->codec;
const struct wcd9xxx_mbhc_general_cfg *generic =
WCD9XXX_MBHC_CAL_GENERAL_PTR(mbhc->mbhc_cfg->calibration);
bool cs_enable;
s16 cur_v_ins_h;
u32 mb_mv;
pr_debug("%s: enter\n", __func__);
if (mbhc->current_plug != PLUG_TYPE_HEADSET &&
mbhc->current_plug != PLUG_TYPE_ANC_HEADPHONE) {
pr_debug("%s(): Headset is not inserted, ignore removal\n",
__func__);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL,
0x08, 0x08);
return;
}
usleep_range(generic->t_shutdown_plug_rem,
generic->t_shutdown_plug_rem);
/* If micbias is enabled, don't enable current source */
cs_enable = (((mbhc->mbhc_cfg->cs_enable_flags &
(1 << MBHC_CS_ENABLE_REMOVAL)) != 0) &&
(!(snd_soc_read(codec,
mbhc->mbhc_bias_regs.ctl_reg) & 0x80)));
if (cs_enable)
wcd9xxx_turn_onoff_current_source(mbhc, &mbhc->mbhc_bias_regs,
true, false);
timeout = jiffies + msecs_to_jiffies(FAKE_REMOVAL_MIN_PERIOD_MS);
do {
if (cs_enable) {
dce = __wcd9xxx_codec_sta_dce(mbhc, 1, true, true);
dcez = mbhc->mbhc_data.dce_nsc_cs_z;
mb_mv = VDDIO_MICBIAS_MV;
} else {
dce = wcd9xxx_codec_sta_dce(mbhc, 1, true);
dcez = mbhc->mbhc_data.dce_z;
mb_mv = mbhc->mbhc_data.micb_mv;
}
pr_debug("%s: DCE 0x%x,%d\n", __func__, dce,
__wcd9xxx_codec_sta_dce_v(mbhc, true, dce,
dcez, mb_mv));
cur_v_ins_h = cs_enable ? (s16) mbhc->mbhc_data.v_cs_ins_h :
(wcd9xxx_get_current_v(mbhc,
WCD9XXX_CURRENT_V_INS_H));
if (dce < cur_v_ins_h) {
removed = false;
break;
}
} while (!time_after(jiffies, timeout));
pr_debug("%s: headset %sactually removed\n", __func__,
removed ? "" : "not ");
if (cs_enable)
wcd9xxx_turn_onoff_current_source(mbhc, &mbhc->mbhc_bias_regs,
false, false);
if (removed) {
if (mbhc->mbhc_cfg->detect_extn_cable) {
if (!wcd9xxx_swch_level_remove(mbhc)) {
/*
* extension cable is still plugged in
* report it as LINEOUT device
*/
if (mbhc->hph_status == SND_JACK_HEADSET)
wcd9xxx_mbhc_ctrl_clk_bandgap(mbhc,
false);
wcd9xxx_report_plug(mbhc, 1, SND_JACK_LINEOUT);
wcd9xxx_cleanup_hs_polling(mbhc);
wcd9xxx_enable_hs_detect(mbhc, 1,
MBHC_USE_MB_TRIGGER,
false);
}
} else {
/* Cancel possibly running hs_detect_work */
wcd9xxx_cancel_hs_detect_plug(mbhc,
&mbhc->correct_plug_noswch);
/*
* If this removal is not false, first check the micbias
* switch status and switch it to LDOH if it is already
* switched to VDDIO.
*/
wcd9xxx_switch_micbias(mbhc, 0);
wcd9xxx_report_plug(mbhc, 0, SND_JACK_HEADSET);
wcd9xxx_mbhc_ctrl_clk_bandgap(mbhc, false);
wcd9xxx_cleanup_hs_polling(mbhc);
wcd9xxx_enable_hs_detect(mbhc, 1, MBHC_USE_MB_TRIGGER |
MBHC_USE_HPHL_TRIGGER,
true);
}
} else {
wcd9xxx_start_hs_polling(mbhc);
}
pr_debug("%s: leave\n", __func__);
}
/* called only from interrupt which is under codec_resource_lock acquisition */
static void wcd9xxx_hs_insert_irq_extn(struct wcd9xxx_mbhc *mbhc,
bool is_mb_trigger)
{
/* Cancel possibly running hs_detect_work */
wcd9xxx_cancel_hs_detect_plug(mbhc, &mbhc->correct_plug_swch);
if (is_mb_trigger) {
pr_debug("%s: Waiting for Headphone left trigger\n", __func__);
wcd9xxx_enable_hs_detect(mbhc, 1, MBHC_USE_HPHL_TRIGGER, false);
} else {
pr_debug("%s: HPHL trigger received, detecting plug type\n",
__func__);
wcd9xxx_mbhc_detect_plug_type(mbhc);
}
}
static irqreturn_t wcd9xxx_hs_remove_irq(int irq, void *data)
{
struct wcd9xxx_mbhc *mbhc = data;
pr_debug("%s: enter, removal interrupt\n", __func__);
WCD9XXX_BCL_LOCK(mbhc->resmgr);
/*
* While we don't know whether MIC is there or not, let the resmgr know
* so micbias can be disabled temporarily
*/
if (mbhc->current_plug == PLUG_TYPE_HEADSET) {
wcd9xxx_resmgr_cond_update_cond(mbhc->resmgr,
WCD9XXX_COND_HPH_MIC, false);
wcd9xxx_resmgr_cond_update_cond(mbhc->resmgr,
WCD9XXX_COND_HPH, false);
} else if (mbhc->current_plug == PLUG_TYPE_HEADPHONE) {
wcd9xxx_resmgr_cond_update_cond(mbhc->resmgr,
WCD9XXX_COND_HPH, false);
}
if (mbhc->mbhc_cfg->detect_extn_cable &&
!wcd9xxx_swch_level_remove(mbhc))
wcd9xxx_hs_remove_irq_noswch(mbhc);
else
wcd9xxx_hs_remove_irq_swch(mbhc);
if (mbhc->current_plug == PLUG_TYPE_HEADSET) {
wcd9xxx_resmgr_cond_update_cond(mbhc->resmgr,
WCD9XXX_COND_HPH, true);
wcd9xxx_resmgr_cond_update_cond(mbhc->resmgr,
WCD9XXX_COND_HPH_MIC, true);
} else if (mbhc->current_plug == PLUG_TYPE_HEADPHONE) {
wcd9xxx_resmgr_cond_update_cond(mbhc->resmgr,
WCD9XXX_COND_HPH, true);
}
WCD9XXX_BCL_UNLOCK(mbhc->resmgr);
return IRQ_HANDLED;
}
static irqreturn_t wcd9xxx_hs_insert_irq(int irq, void *data)
{
bool is_mb_trigger, is_removal;
struct wcd9xxx_mbhc *mbhc = data;
struct snd_soc_codec *codec = mbhc->codec;
pr_debug("%s: enter\n", __func__);
WCD9XXX_BCL_LOCK(mbhc->resmgr);
wcd9xxx_disable_irq(mbhc->resmgr->core_res, mbhc->intr_ids->insertion);
is_mb_trigger = !!(snd_soc_read(codec, mbhc->mbhc_bias_regs.mbhc_reg) &
0x10);
is_removal = !!(snd_soc_read(codec, WCD9XXX_A_CDC_MBHC_INT_CTL) & 0x02);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_INT_CTL, 0x03, 0x00);
/* Turn off both HPH and MIC line schmitt triggers */
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.mbhc_reg, 0x90, 0x00);
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_HPH, 0x13, 0x00);
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.ctl_reg, 0x01, 0x00);
if (mbhc->mbhc_cfg->detect_extn_cable &&
mbhc->current_plug == PLUG_TYPE_HIGH_HPH)
wcd9xxx_hs_insert_irq_extn(mbhc, is_mb_trigger);
else
wcd9xxx_hs_insert_irq_swch(mbhc, is_removal);
WCD9XXX_BCL_UNLOCK(mbhc->resmgr);
return IRQ_HANDLED;
}
static void wcd9xxx_btn_lpress_fn(struct work_struct *work)
{
struct delayed_work *dwork;
short bias_value;
int dce_mv, sta_mv;
struct wcd9xxx_mbhc *mbhc;
pr_debug("%s:\n", __func__);
dwork = to_delayed_work(work);
mbhc = container_of(dwork, struct wcd9xxx_mbhc, mbhc_btn_dwork);
bias_value = wcd9xxx_read_sta_result(mbhc->codec);
sta_mv = wcd9xxx_codec_sta_dce_v(mbhc, 0, bias_value);
bias_value = wcd9xxx_read_dce_result(mbhc->codec);
dce_mv = wcd9xxx_codec_sta_dce_v(mbhc, 1, bias_value);
pr_debug("%s: STA: %d, DCE: %d\n", __func__, sta_mv, dce_mv);
pr_debug("%s: Reporting long button press event\n", __func__);
wcd9xxx_jack_report(mbhc, &mbhc->button_jack, mbhc->buttons_pressed,
mbhc->buttons_pressed);
pr_debug("%s: leave\n", __func__);
wcd9xxx_unlock_sleep(mbhc->resmgr->core_res);
}
static void wcd9xxx_mbhc_insert_work(struct work_struct *work)
{
struct delayed_work *dwork;
struct wcd9xxx_mbhc *mbhc;
struct snd_soc_codec *codec;
struct wcd9xxx_core_resource *core_res;
dwork = to_delayed_work(work);
mbhc = container_of(dwork, struct wcd9xxx_mbhc, mbhc_insert_dwork);
codec = mbhc->codec;
core_res = mbhc->resmgr->core_res;
pr_debug("%s:\n", __func__);
/* Turn off both HPH and MIC line schmitt triggers */
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.mbhc_reg, 0x90, 0x00);
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_HPH, 0x13, 0x00);
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.ctl_reg, 0x01, 0x00);
wcd9xxx_disable_irq_sync(core_res, mbhc->intr_ids->insertion);
wcd9xxx_mbhc_detect_plug_type(mbhc);
wcd9xxx_unlock_sleep(core_res);
}
static bool wcd9xxx_mbhc_fw_validate(const struct firmware *fw)
{
u32 cfg_offset;
struct wcd9xxx_mbhc_imped_detect_cfg *imped_cfg;
struct wcd9xxx_mbhc_btn_detect_cfg *btn_cfg;
if (fw->size < WCD9XXX_MBHC_CAL_MIN_SIZE)
return false;
/*
* Previous check guarantees that there is enough fw data up
* to num_btn
*/
btn_cfg = WCD9XXX_MBHC_CAL_BTN_DET_PTR(fw->data);
cfg_offset = (u32) ((void *) btn_cfg - (void *) fw->data);
if (fw->size < (cfg_offset + WCD9XXX_MBHC_CAL_BTN_SZ(btn_cfg)))
return false;
/*
* Previous check guarantees that there is enough fw data up
* to start of impedance detection configuration
*/
imped_cfg = WCD9XXX_MBHC_CAL_IMPED_DET_PTR(fw->data);
cfg_offset = (u32) ((void *) imped_cfg - (void *) fw->data);
if (fw->size < (cfg_offset + WCD9XXX_MBHC_CAL_IMPED_MIN_SZ))
return false;
if (fw->size < (cfg_offset + WCD9XXX_MBHC_CAL_IMPED_SZ(imped_cfg)))
return false;
return true;
}
static u16 wcd9xxx_codec_v_sta_dce(struct wcd9xxx_mbhc *mbhc,
enum meas_type dce, s16 vin_mv,
bool cs_enable)
{
s16 diff, zero;
u32 mb_mv, in;
u16 value;
s16 dce_z;
mb_mv = mbhc->mbhc_data.micb_mv;
dce_z = mbhc->mbhc_data.dce_z;
if (mb_mv == 0) {
pr_err("%s: Mic Bias voltage is set to zero\n", __func__);
return -EINVAL;
}
if (cs_enable) {
mb_mv = VDDIO_MICBIAS_MV;
dce_z = mbhc->mbhc_data.dce_nsc_cs_z;
}
if (dce) {
diff = (mbhc->mbhc_data.dce_mb) - (dce_z);
zero = (dce_z);
} else {
diff = (mbhc->mbhc_data.sta_mb) - (mbhc->mbhc_data.sta_z);
zero = (mbhc->mbhc_data.sta_z);
}
in = (u32) diff * vin_mv;
value = (u16) (in / mb_mv) + zero;
return value;
}
static void wcd9xxx_mbhc_calc_thres(struct wcd9xxx_mbhc *mbhc)
{
struct snd_soc_codec *codec;
s16 adj_v_hs_max;
s16 btn_mv = 0, btn_mv_sta[MBHC_V_IDX_NUM], btn_mv_dce[MBHC_V_IDX_NUM];
struct wcd9xxx_mbhc_btn_detect_cfg *btn_det;
struct wcd9xxx_mbhc_plug_type_cfg *plug_type;
u16 *btn_high;
int i;
pr_debug("%s: enter\n", __func__);
codec = mbhc->codec;
btn_det = WCD9XXX_MBHC_CAL_BTN_DET_PTR(mbhc->mbhc_cfg->calibration);
plug_type = WCD9XXX_MBHC_CAL_PLUG_TYPE_PTR(mbhc->mbhc_cfg->calibration);
mbhc->mbhc_data.v_ins_hu[MBHC_V_IDX_CFILT] =
wcd9xxx_codec_v_sta_dce(mbhc, STA, plug_type->v_hs_max, false);
mbhc->mbhc_data.v_ins_h[MBHC_V_IDX_CFILT] =
wcd9xxx_codec_v_sta_dce(mbhc, DCE, plug_type->v_hs_max, false);
mbhc->mbhc_data.v_inval_ins_low = FAKE_INS_LOW;
mbhc->mbhc_data.v_inval_ins_high = FAKE_INS_HIGH;
if (mbhc->mbhc_data.micb_mv != VDDIO_MICBIAS_MV) {
adj_v_hs_max = scale_v_micb_vddio(mbhc, plug_type->v_hs_max,
true);
mbhc->mbhc_data.v_ins_hu[MBHC_V_IDX_VDDIO] =
wcd9xxx_codec_v_sta_dce(mbhc, STA, adj_v_hs_max, false);
mbhc->mbhc_data.v_ins_h[MBHC_V_IDX_VDDIO] =
wcd9xxx_codec_v_sta_dce(mbhc, DCE, adj_v_hs_max, false);
mbhc->mbhc_data.v_inval_ins_low =
scale_v_micb_vddio(mbhc, mbhc->mbhc_data.v_inval_ins_low,
false);
mbhc->mbhc_data.v_inval_ins_high =
scale_v_micb_vddio(mbhc, mbhc->mbhc_data.v_inval_ins_high,
false);
}
mbhc->mbhc_data.v_cs_ins_h = wcd9xxx_codec_v_sta_dce(mbhc, DCE,
WCD9XXX_V_CS_HS_MAX,
true);
pr_debug("%s: v_ins_h for current source: 0x%x\n", __func__,
mbhc->mbhc_data.v_cs_ins_h);
btn_high = wcd9xxx_mbhc_cal_btn_det_mp(btn_det,
MBHC_BTN_DET_V_BTN_HIGH);
for (i = 0; i < btn_det->num_btn; i++)
btn_mv = btn_high[i] > btn_mv ? btn_high[i] : btn_mv;
btn_mv_sta[MBHC_V_IDX_CFILT] = btn_mv + btn_det->v_btn_press_delta_sta;
btn_mv_dce[MBHC_V_IDX_CFILT] = btn_mv + btn_det->v_btn_press_delta_cic;
btn_mv_sta[MBHC_V_IDX_VDDIO] =
scale_v_micb_vddio(mbhc, btn_mv_sta[MBHC_V_IDX_CFILT], true);
btn_mv_dce[MBHC_V_IDX_VDDIO] =
scale_v_micb_vddio(mbhc, btn_mv_dce[MBHC_V_IDX_CFILT], true);
mbhc->mbhc_data.v_b1_hu[MBHC_V_IDX_CFILT] =
wcd9xxx_codec_v_sta_dce(mbhc, STA, btn_mv_sta[MBHC_V_IDX_CFILT],
false);
mbhc->mbhc_data.v_b1_h[MBHC_V_IDX_CFILT] =
wcd9xxx_codec_v_sta_dce(mbhc, DCE, btn_mv_dce[MBHC_V_IDX_CFILT],
false);
mbhc->mbhc_data.v_b1_hu[MBHC_V_IDX_VDDIO] =
wcd9xxx_codec_v_sta_dce(mbhc, STA, btn_mv_sta[MBHC_V_IDX_VDDIO],
false);
mbhc->mbhc_data.v_b1_h[MBHC_V_IDX_VDDIO] =
wcd9xxx_codec_v_sta_dce(mbhc, DCE, btn_mv_dce[MBHC_V_IDX_VDDIO],
false);
mbhc->mbhc_data.v_brh[MBHC_V_IDX_CFILT] =
mbhc->mbhc_data.v_b1_h[MBHC_V_IDX_CFILT];
mbhc->mbhc_data.v_brh[MBHC_V_IDX_VDDIO] =
mbhc->mbhc_data.v_b1_h[MBHC_V_IDX_VDDIO];
mbhc->mbhc_data.v_brl = BUTTON_MIN;
mbhc->mbhc_data.v_no_mic =
wcd9xxx_codec_v_sta_dce(mbhc, STA, plug_type->v_no_mic, false);
pr_debug("%s: leave\n", __func__);
}
static void wcd9xxx_onoff_ext_mclk(struct wcd9xxx_mbhc *mbhc, bool on)
{
/*
* XXX: {codec}_mclk_enable holds WCD9XXX_BCL_LOCK,
* therefore wcd9xxx_onoff_ext_mclk caller SHOULDN'T hold
* WCD9XXX_BCL_LOCK when it calls wcd9xxx_onoff_ext_mclk()
*/
mbhc->mbhc_cfg->mclk_cb_fn(mbhc->codec, on, false);
}
/*
* Mic Bias Enable Decision
* Return true if high_hph_cnt is a power of 2 (!= 2)
* otherwise return false
*/
static bool wcd9xxx_mbhc_enable_mb_decision(int high_hph_cnt)
{
return (high_hph_cnt > 2) && !(high_hph_cnt & (high_hph_cnt - 1));
}
static void wcd9xxx_correct_swch_plug(struct work_struct *work)
{
struct wcd9xxx_mbhc *mbhc;
struct snd_soc_codec *codec;
enum wcd9xxx_mbhc_plug_type plug_type = PLUG_TYPE_INVALID;
unsigned long timeout;
int retry = 0, pt_gnd_mic_swap_cnt = 0;
int highhph_cnt = 0;
bool correction = false;
bool current_source_enable;
bool wrk_complete = true, highhph = false;
pr_debug("%s: enter\n", __func__);
mbhc = container_of(work, struct wcd9xxx_mbhc, correct_plug_swch);
codec = mbhc->codec;
current_source_enable = (((mbhc->mbhc_cfg->cs_enable_flags &
(1 << MBHC_CS_ENABLE_POLLING)) != 0) &&
(!(snd_soc_read(codec,
mbhc->mbhc_bias_regs.ctl_reg) & 0x80)));
wcd9xxx_onoff_ext_mclk(mbhc, true);
/*
* Keep override on during entire plug type correction work.
*
* This is okay under the assumption that any switch irqs which use
* MBHC block cancel and sync this work so override is off again
* prior to switch interrupt handler's MBHC block usage.
* Also while this correction work is running, we can guarantee
* DAPM doesn't use any MBHC block as this work only runs with
* headphone detection.
*/
if (current_source_enable)
wcd9xxx_turn_onoff_current_source(mbhc, &mbhc->mbhc_bias_regs,
true, false);
else
wcd9xxx_turn_onoff_override(mbhc, true);
timeout = jiffies + msecs_to_jiffies(HS_DETECT_PLUG_TIME_MS);
while (!time_after(jiffies, timeout)) {
++retry;
rmb();
if (mbhc->hs_detect_work_stop) {
wrk_complete = false;
pr_debug("%s: stop requested\n", __func__);
break;
}
msleep(HS_DETECT_PLUG_INERVAL_MS);
if (wcd9xxx_swch_level_remove(mbhc)) {
wrk_complete = false;
pr_debug("%s: Switch level is low\n", __func__);
break;
}
/* can race with removal interrupt */
WCD9XXX_BCL_LOCK(mbhc->resmgr);
if (current_source_enable)
plug_type = wcd9xxx_codec_cs_get_plug_type(mbhc,
highhph);
else
plug_type = wcd9xxx_codec_get_plug_type(mbhc, true);
WCD9XXX_BCL_UNLOCK(mbhc->resmgr);
pr_debug("%s: attempt(%d) current_plug(%d) new_plug(%d)\n",
__func__, retry, mbhc->current_plug, plug_type);
highhph_cnt = (plug_type == PLUG_TYPE_HIGH_HPH) ?
(highhph_cnt + 1) :
0;
highhph = wcd9xxx_mbhc_enable_mb_decision(highhph_cnt);
if (plug_type == PLUG_TYPE_INVALID) {
pr_debug("Invalid plug in attempt # %d\n", retry);
if (!mbhc->mbhc_cfg->detect_extn_cable &&
retry == NUM_ATTEMPTS_TO_REPORT &&
mbhc->current_plug == PLUG_TYPE_NONE) {
WCD9XXX_BCL_LOCK(mbhc->resmgr);
wcd9xxx_report_plug(mbhc, 1,
SND_JACK_HEADPHONE);
WCD9XXX_BCL_UNLOCK(mbhc->resmgr);
}
} else if (plug_type == PLUG_TYPE_HEADPHONE) {
pr_debug("Good headphone detected, continue polling\n");
WCD9XXX_BCL_LOCK(mbhc->resmgr);
if (mbhc->mbhc_cfg->detect_extn_cable) {
if (mbhc->current_plug != plug_type)
wcd9xxx_report_plug(mbhc, 1,
SND_JACK_HEADPHONE);
} else if (mbhc->current_plug == PLUG_TYPE_NONE) {
wcd9xxx_report_plug(mbhc, 1,
SND_JACK_HEADPHONE);
}
WCD9XXX_BCL_UNLOCK(mbhc->resmgr);
} else if (plug_type == PLUG_TYPE_HIGH_HPH) {
pr_debug("%s: High HPH detected, continue polling\n",
__func__);
WCD9XXX_BCL_LOCK(mbhc->resmgr);
if (mbhc->mbhc_cfg->detect_extn_cable) {
if (mbhc->current_plug != plug_type)
wcd9xxx_report_plug(mbhc, 1,
SND_JACK_LINEOUT);
} else if (mbhc->current_plug == PLUG_TYPE_NONE) {
wcd9xxx_report_plug(mbhc, 1,
SND_JACK_HEADPHONE);
}
WCD9XXX_BCL_UNLOCK(mbhc->resmgr);
} else {
if (plug_type == PLUG_TYPE_GND_MIC_SWAP) {
pt_gnd_mic_swap_cnt++;
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
*/
} else if (mbhc->mbhc_cfg->swap_gnd_mic) {
/*
* if switch is toggled, check again,
* otherwise report unsupported plug
*/
if (mbhc->mbhc_cfg->swap_gnd_mic(codec))
continue;
}
} else
pt_gnd_mic_swap_cnt = 0;
WCD9XXX_BCL_LOCK(mbhc->resmgr);
/* Turn off override/current source */
if (current_source_enable)
wcd9xxx_turn_onoff_current_source(mbhc,
&mbhc->mbhc_bias_regs,
false, false);
else
wcd9xxx_turn_onoff_override(mbhc, false);
/*
* The valid plug also includes PLUG_TYPE_GND_MIC_SWAP
*/
wcd9xxx_find_plug_and_report(mbhc, plug_type);
WCD9XXX_BCL_UNLOCK(mbhc->resmgr);
pr_debug("Attempt %d found correct plug %d\n", retry,
plug_type);
correction = true;
break;
}
}
highhph = false;
if (wrk_complete && plug_type == PLUG_TYPE_HIGH_HPH) {
pr_debug("%s: polling is done, still HPH, so enabling MIC trigger\n",
__func__);
WCD9XXX_BCL_LOCK(mbhc->resmgr);
wcd9xxx_find_plug_and_report(mbhc, plug_type);
highhph = true;
WCD9XXX_BCL_UNLOCK(mbhc->resmgr);
}
if (!correction && current_source_enable)
wcd9xxx_turn_onoff_current_source(mbhc, &mbhc->mbhc_bias_regs,
false, highhph);
else if (!correction)
wcd9xxx_turn_onoff_override(mbhc, false);
wcd9xxx_onoff_ext_mclk(mbhc, false);
if (mbhc->mbhc_cfg->detect_extn_cable) {
WCD9XXX_BCL_LOCK(mbhc->resmgr);
if ((mbhc->current_plug == PLUG_TYPE_HEADPHONE &&
wrk_complete) ||
mbhc->current_plug == PLUG_TYPE_GND_MIC_SWAP ||
mbhc->current_plug == PLUG_TYPE_INVALID ||
(plug_type == PLUG_TYPE_INVALID && wrk_complete)) {
/* Enable removal detection */
wcd9xxx_cleanup_hs_polling(mbhc);
wcd9xxx_enable_hs_detect(mbhc, 0, 0, false);
}
WCD9XXX_BCL_UNLOCK(mbhc->resmgr);
}
pr_debug("%s: leave current_plug(%d)\n", __func__, mbhc->current_plug);
/* unlock sleep */
wcd9xxx_unlock_sleep(mbhc->resmgr->core_res);
}
static void wcd9xxx_swch_irq_handler(struct wcd9xxx_mbhc *mbhc)
{
bool insert;
bool is_removed = false;
struct snd_soc_codec *codec = mbhc->codec;
pr_debug("%s: enter\n", __func__);
mbhc->in_swch_irq_handler = true;
/* Wait here for debounce time */
usleep_range(SWCH_IRQ_DEBOUNCE_TIME_US, SWCH_IRQ_DEBOUNCE_TIME_US);
WCD9XXX_BCL_LOCK(mbhc->resmgr);
/* cancel pending button press */
if (wcd9xxx_cancel_btn_work(mbhc))
pr_debug("%s: button press is canceled\n", __func__);
insert = !wcd9xxx_swch_level_remove(mbhc);
pr_debug("%s: Current plug type %d, insert %d\n", __func__,
mbhc->current_plug, insert);
if ((mbhc->current_plug == PLUG_TYPE_NONE) && insert) {
mbhc->lpi_enabled = false;
wmb();
/* cancel detect plug */
wcd9xxx_cancel_hs_detect_plug(mbhc,
&mbhc->correct_plug_swch);
if ((mbhc->current_plug != PLUG_TYPE_NONE) &&
!(snd_soc_read(codec, WCD9XXX_A_MBHC_INSERT_DETECT) &
(1 << 1)))
goto exit;
/* Disable Mic Bias pull down and HPH Switch to GND */
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.ctl_reg, 0x01,
0x00);
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_HPH, 0x01, 0x00);
wcd9xxx_mbhc_detect_plug_type(mbhc);
} else if ((mbhc->current_plug != PLUG_TYPE_NONE) && !insert) {
mbhc->lpi_enabled = false;
wmb();
/* cancel detect plug */
wcd9xxx_cancel_hs_detect_plug(mbhc,
&mbhc->correct_plug_swch);
if (mbhc->current_plug == PLUG_TYPE_HEADPHONE) {
wcd9xxx_report_plug(mbhc, 0, SND_JACK_HEADPHONE);
is_removed = true;
} else if (mbhc->current_plug == PLUG_TYPE_GND_MIC_SWAP) {
wcd9xxx_report_plug(mbhc, 0, SND_JACK_UNSUPPORTED);
is_removed = true;
} else if (mbhc->current_plug == PLUG_TYPE_HEADSET) {
wcd9xxx_pause_hs_polling(mbhc);
wcd9xxx_mbhc_ctrl_clk_bandgap(mbhc, false);
wcd9xxx_cleanup_hs_polling(mbhc);
wcd9xxx_report_plug(mbhc, 0, SND_JACK_HEADSET);
is_removed = true;
} else if (mbhc->current_plug == PLUG_TYPE_HIGH_HPH) {
wcd9xxx_report_plug(mbhc, 0, SND_JACK_LINEOUT);
is_removed = true;
} else if (mbhc->current_plug == PLUG_TYPE_ANC_HEADPHONE) {
wcd9xxx_pause_hs_polling(mbhc);
wcd9xxx_mbhc_ctrl_clk_bandgap(mbhc, false);
wcd9xxx_cleanup_hs_polling(mbhc);
wcd9xxx_report_plug(mbhc, 0, SND_JACK_ANC_HEADPHONE);
is_removed = true;
}
if (is_removed) {
snd_soc_write(codec, WCD9XXX_A_MBHC_SCALING_MUX_1,
0x00);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL,
0x02, 0x00);
/* Enable Mic Bias pull down and HPH Switch to GND */
snd_soc_update_bits(codec,
mbhc->mbhc_bias_regs.ctl_reg, 0x01,
0x01);
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_HPH, 0x01,
0x01);
/* Make sure mic trigger is turned off */
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.ctl_reg,
0x01, 0x01);
snd_soc_update_bits(codec,
mbhc->mbhc_bias_regs.mbhc_reg,
0x90, 0x00);
/* Reset MBHC State Machine */
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL,
0x08, 0x08);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL,
0x08, 0x00);
/* Turn off override */
wcd9xxx_turn_onoff_override(mbhc, false);
}
}
exit:
mbhc->in_swch_irq_handler = false;
WCD9XXX_BCL_UNLOCK(mbhc->resmgr);
pr_debug("%s: leave\n", __func__);
}
static irqreturn_t wcd9xxx_mech_plug_detect_irq(int irq, void *data)
{
int r = IRQ_HANDLED;
struct wcd9xxx_mbhc *mbhc = data;
pr_debug("%s: enter\n", __func__);
if (unlikely(wcd9xxx_lock_sleep(mbhc->resmgr->core_res) == false)) {
pr_warn("%s: failed to hold suspend\n", __func__);
r = IRQ_NONE;
} else {
/* Call handler */
wcd9xxx_swch_irq_handler(mbhc);
wcd9xxx_unlock_sleep(mbhc->resmgr->core_res);
}
pr_debug("%s: leave %d\n", __func__, r);
return r;
}
static int wcd9xxx_is_false_press(struct wcd9xxx_mbhc *mbhc)
{
s16 mb_v;
int i = 0;
int r = 0;
const s16 v_ins_hu =
wcd9xxx_get_current_v(mbhc, WCD9XXX_CURRENT_V_INS_HU);
const s16 v_ins_h =
wcd9xxx_get_current_v(mbhc, WCD9XXX_CURRENT_V_INS_H);
const s16 v_b1_hu =
wcd9xxx_get_current_v(mbhc, WCD9XXX_CURRENT_V_B1_HU);
const s16 v_b1_h =
wcd9xxx_get_current_v(mbhc, WCD9XXX_CURRENT_V_B1_H);
const unsigned long timeout =
jiffies + msecs_to_jiffies(BTN_RELEASE_DEBOUNCE_TIME_MS);
while (time_before(jiffies, timeout)) {
/*
* This function needs to run measurements just few times during
* release debounce time. Make 1ms interval to avoid
* unnecessary excessive measurements.
*/
usleep_range(1000, 1000 + WCD9XXX_USLEEP_RANGE_MARGIN_US);
if (i == 0) {
mb_v = wcd9xxx_codec_sta_dce(mbhc, 0, true);
pr_debug("%s: STA[0]: %d,%d\n", __func__, mb_v,
wcd9xxx_codec_sta_dce_v(mbhc, 0, mb_v));
if (mb_v < v_b1_hu || mb_v > v_ins_hu) {
r = 1;
break;
}
} else {
mb_v = wcd9xxx_codec_sta_dce(mbhc, 1, true);
pr_debug("%s: DCE[%d]: %d,%d\n", __func__, i, mb_v,
wcd9xxx_codec_sta_dce_v(mbhc, 1, mb_v));
if (mb_v < v_b1_h || mb_v > v_ins_h) {
r = 1;
break;
}
}
i++;
}
return r;
}
/* called under codec_resource_lock acquisition */
static int wcd9xxx_determine_button(const struct wcd9xxx_mbhc *mbhc,
const s32 micmv)
{
s16 *v_btn_low, *v_btn_high;
struct wcd9xxx_mbhc_btn_detect_cfg *btn_det;
int i, btn = -1;
btn_det = WCD9XXX_MBHC_CAL_BTN_DET_PTR(mbhc->mbhc_cfg->calibration);
v_btn_low = wcd9xxx_mbhc_cal_btn_det_mp(btn_det,
MBHC_BTN_DET_V_BTN_LOW);
v_btn_high = wcd9xxx_mbhc_cal_btn_det_mp(btn_det,
MBHC_BTN_DET_V_BTN_HIGH);
for (i = 0; i < btn_det->num_btn; i++) {
if ((v_btn_low[i] <= micmv) && (v_btn_high[i] >= micmv)) {
btn = i;
break;
}
}
if (btn == -1)
pr_debug("%s: couldn't find button number for mic mv %d\n",
__func__, micmv);
return btn;
}
static int wcd9xxx_get_button_mask(const int btn)
{
int mask = 0;
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;
case 6:
mask = SND_JACK_BTN_6;
break;
case 7:
mask = SND_JACK_BTN_7;
break;
}
return mask;
}
static void wcd9xxx_get_z(struct wcd9xxx_mbhc *mbhc, s16 *dce_z, s16 *sta_z,
struct mbhc_micbias_regs *micb_regs,
bool norel_detection)
{
s16 reg0, reg1;
int change;
struct snd_soc_codec *codec = mbhc->codec;
WCD9XXX_BCL_ASSERT_LOCKED(mbhc->resmgr);
/* Pull down micbias to ground and disconnect vddio switch */
reg0 = snd_soc_read(codec, micb_regs->ctl_reg);
snd_soc_update_bits(codec, micb_regs->ctl_reg, 0x81, 0x1);
reg1 = snd_soc_read(codec, micb_regs->mbhc_reg);
snd_soc_update_bits(codec, micb_regs->mbhc_reg, 1 << 7, 0);
/* Disconnect override from micbias */
change = snd_soc_update_bits(codec, WCD9XXX_A_MAD_ANA_CTRL, 1 << 4,
1 << 0);
usleep_range(1000, 1000 + 1000);
if (sta_z) {
*sta_z = wcd9xxx_codec_sta_dce(mbhc, 0, norel_detection);
pr_debug("%s: sta_z 0x%x\n", __func__, *sta_z & 0xFFFF);
}
if (dce_z) {
*dce_z = wcd9xxx_codec_sta_dce(mbhc, 1, norel_detection);
pr_debug("%s: dce_z 0x%x\n", __func__, *dce_z & 0xFFFF);
}
/* Connect override from micbias */
if (change)
snd_soc_update_bits(codec, WCD9XXX_A_MAD_ANA_CTRL, 1 << 4,
1 << 4);
/* Disable pull down micbias to ground */
snd_soc_write(codec, micb_regs->mbhc_reg, reg1);
snd_soc_write(codec, micb_regs->ctl_reg, reg0);
}
/*
* This function recalibrates dce_z and sta_z parameters.
* No release detection will be false when this function is
* used.
*/
void wcd9xxx_update_z(struct wcd9xxx_mbhc *mbhc)
{
const u16 sta_z = mbhc->mbhc_data.sta_z;
const u16 dce_z = mbhc->mbhc_data.dce_z;
wcd9xxx_get_z(mbhc, &mbhc->mbhc_data.dce_z, &mbhc->mbhc_data.sta_z,
&mbhc->mbhc_bias_regs, false);
pr_debug("%s: sta_z 0x%x,dce_z 0x%x -> sta_z 0x%x,dce_z 0x%x\n",
__func__, sta_z & 0xFFFF, dce_z & 0xFFFF,
mbhc->mbhc_data.sta_z & 0xFFFF,
mbhc->mbhc_data.dce_z & 0xFFFF);
wcd9xxx_mbhc_calc_thres(mbhc);
wcd9xxx_calibrate_hs_polling(mbhc);
}
/*
* wcd9xxx_update_rel_threshold : update mbhc release upper bound threshold
* to ceilmv + buffer
*/
static int wcd9xxx_update_rel_threshold(struct wcd9xxx_mbhc *mbhc, int ceilmv,
bool vddio)
{
u16 v_brh, v_b1_hu;
int mv;
struct wcd9xxx_mbhc_btn_detect_cfg *btn_det;
void *calibration = mbhc->mbhc_cfg->calibration;
struct snd_soc_codec *codec = mbhc->codec;
btn_det = WCD9XXX_MBHC_CAL_BTN_DET_PTR(calibration);
mv = ceilmv + btn_det->v_btn_press_delta_cic;
if (vddio)
mv = scale_v_micb_vddio(mbhc, mv, true);
pr_debug("%s: reprogram vb1hu/vbrh to %dmv\n", __func__, mv);
if (mbhc->mbhc_state != MBHC_STATE_POTENTIAL_RECOVERY) {
/*
* update LSB first so mbhc hardware block
* doesn't see too low value.
*/
v_b1_hu = wcd9xxx_codec_v_sta_dce(mbhc, STA, mv, false);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B3_CTL, v_b1_hu &
0xFF);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B4_CTL,
(v_b1_hu >> 8) & 0xFF);
v_brh = wcd9xxx_codec_v_sta_dce(mbhc, DCE, mv, false);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B9_CTL, v_brh &
0xFF);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_VOLT_B10_CTL,
(v_brh >> 8) & 0xFF);
}
return 0;
}
irqreturn_t wcd9xxx_dce_handler(int irq, void *data)
{
int i, mask;
bool vddio;
u8 mbhc_status;
s16 dce_z, sta_z;
s32 stamv, stamv_s;
s16 *v_btn_high;
struct wcd9xxx_mbhc_btn_detect_cfg *btn_det;
int btn = -1, meas = 0;
struct wcd9xxx_mbhc *mbhc = data;
const struct wcd9xxx_mbhc_btn_detect_cfg *d =
WCD9XXX_MBHC_CAL_BTN_DET_PTR(mbhc->mbhc_cfg->calibration);
short btnmeas[d->n_btn_meas + 1];
short dce[d->n_btn_meas + 1], sta;
s32 mv[d->n_btn_meas + 1], mv_s[d->n_btn_meas + 1];
struct snd_soc_codec *codec = mbhc->codec;
struct wcd9xxx_core_resource *core_res = mbhc->resmgr->core_res;
int n_btn_meas = d->n_btn_meas;
void *calibration = mbhc->mbhc_cfg->calibration;
pr_debug("%s: enter\n", __func__);
WCD9XXX_BCL_LOCK(mbhc->resmgr);
mutex_lock(&mbhc->mbhc_lock);
mbhc_status = snd_soc_read(codec, WCD9XXX_A_CDC_MBHC_B1_STATUS) & 0x3E;
if (mbhc->mbhc_state == MBHC_STATE_POTENTIAL_RECOVERY) {
pr_debug("%s: mbhc is being recovered, skip button press\n",
__func__);
goto done;
}
mbhc->mbhc_state = MBHC_STATE_POTENTIAL;
if (!mbhc->polling_active) {
pr_warn("%s: mbhc polling is not active, skip button press\n",
__func__);
goto done;
}
/* If switch nterrupt already kicked in, ignore button press */
if (mbhc->in_swch_irq_handler) {
pr_debug("%s: Swtich level changed, ignore button press\n",
__func__);
btn = -1;
goto done;
}
/*
* setup internal micbias if codec uses internal micbias for
* headset detection
*/
if (mbhc->mbhc_cfg->use_int_rbias) {
if (mbhc->mbhc_cb && mbhc->mbhc_cb->setup_int_rbias)
mbhc->mbhc_cb->setup_int_rbias(codec, true);
else
pr_err("%s: internal bias requested but codec did not provide callback\n",
__func__);
}
/* Measure scaled HW DCE */
vddio = (mbhc->mbhc_data.micb_mv != VDDIO_MICBIAS_MV &&
mbhc->mbhc_micbias_switched);
dce_z = mbhc->mbhc_data.dce_z;
sta_z = mbhc->mbhc_data.sta_z;
/* Measure scaled HW STA */
dce[0] = wcd9xxx_read_dce_result(codec);
sta = wcd9xxx_read_sta_result(codec);
if (mbhc_status != STATUS_REL_DETECTION) {
if (mbhc->mbhc_last_resume &&
!time_after(jiffies, mbhc->mbhc_last_resume + HZ)) {
pr_debug("%s: Button is released after resume\n",
__func__);
n_btn_meas = 0;
} else {
pr_debug("%s: Button is released without resume",
__func__);
if (mbhc->update_z) {
wcd9xxx_update_z(mbhc);
dce_z = mbhc->mbhc_data.dce_z;
sta_z = mbhc->mbhc_data.sta_z;
mbhc->update_z = true;
}
stamv = __wcd9xxx_codec_sta_dce_v(mbhc, 0, sta, sta_z,
mbhc->mbhc_data.micb_mv);
if (vddio)
stamv_s = scale_v_micb_vddio(mbhc, stamv,
false);
else
stamv_s = stamv;
mv[0] = __wcd9xxx_codec_sta_dce_v(mbhc, 1, dce[0],
dce_z, mbhc->mbhc_data.micb_mv);
mv_s[0] = vddio ? scale_v_micb_vddio(mbhc, mv[0],
false) : mv[0];
btn = wcd9xxx_determine_button(mbhc, mv_s[0]);
if (btn != wcd9xxx_determine_button(mbhc, stamv_s))
btn = -1;
goto done;
}
}
for (meas = 1; ((d->n_btn_meas) && (meas < (d->n_btn_meas + 1)));
meas++)
dce[meas] = wcd9xxx_codec_sta_dce(mbhc, 1, false);
if (mbhc->update_z) {
wcd9xxx_update_z(mbhc);
dce_z = mbhc->mbhc_data.dce_z;
sta_z = mbhc->mbhc_data.sta_z;
mbhc->update_z = true;
}
stamv = __wcd9xxx_codec_sta_dce_v(mbhc, 0, sta, sta_z,
mbhc->mbhc_data.micb_mv);
if (vddio)
stamv_s = scale_v_micb_vddio(mbhc, stamv, false);
else
stamv_s = stamv;
pr_debug("%s: Meas HW - STA 0x%x,%d,%d\n", __func__,
sta & 0xFFFF, stamv, stamv_s);
/* determine pressed button */
mv[0] = __wcd9xxx_codec_sta_dce_v(mbhc, 1, dce[0], dce_z,
mbhc->mbhc_data.micb_mv);
mv_s[0] = vddio ? scale_v_micb_vddio(mbhc, mv[0], false) : mv[0];
btnmeas[0] = wcd9xxx_determine_button(mbhc, mv_s[0]);
pr_debug("%s: Meas HW - DCE 0x%x,%d,%d button %d\n", __func__,
dce[0] & 0xFFFF, mv[0], mv_s[0], btnmeas[0]);
if (n_btn_meas == 0)
btn = btnmeas[0];
for (meas = 1; (n_btn_meas && d->n_btn_meas &&
(meas < (d->n_btn_meas + 1))); meas++) {
mv[meas] = __wcd9xxx_codec_sta_dce_v(mbhc, 1, dce[meas], dce_z,
mbhc->mbhc_data.micb_mv);
mv_s[meas] = vddio ? scale_v_micb_vddio(mbhc, mv[meas], false) :
mv[meas];
btnmeas[meas] = wcd9xxx_determine_button(mbhc, mv_s[meas]);
pr_debug("%s: Meas %d - DCE 0x%x,%d,%d button %d\n",
__func__, meas, dce[meas] & 0xFFFF, mv[meas],
mv_s[meas], btnmeas[meas]);
/*
* if large enough measurements are collected,
* start to check if last all n_btn_con measurements were
* in same button low/high range
*/
if (meas + 1 >= d->n_btn_con) {
for (i = 0; i < d->n_btn_con; i++)
if ((btnmeas[meas] < 0) ||
(btnmeas[meas] != btnmeas[meas - i]))
break;
if (i == d->n_btn_con) {
/* button pressed */
btn = btnmeas[meas];
break;
} else if ((n_btn_meas - meas) < (d->n_btn_con - 1)) {
/*
* if left measurements are less than n_btn_con,
* it's impossible to find button number
*/
break;
}
}
}
if (btn >= 0) {
if (mbhc->in_swch_irq_handler) {
pr_debug(
"%s: Switch irq triggered, ignore button press\n",
__func__);
goto done;
}
btn_det = WCD9XXX_MBHC_CAL_BTN_DET_PTR(calibration);
v_btn_high = wcd9xxx_mbhc_cal_btn_det_mp(btn_det,
MBHC_BTN_DET_V_BTN_HIGH);
WARN_ON(btn >= btn_det->num_btn);
/* reprogram release threshold to catch voltage ramp up early */
wcd9xxx_update_rel_threshold(mbhc, v_btn_high[btn], vddio);
mask = wcd9xxx_get_button_mask(btn);
mbhc->buttons_pressed |= mask;
wcd9xxx_lock_sleep(core_res);
if (schedule_delayed_work(&mbhc->mbhc_btn_dwork,
msecs_to_jiffies(400)) == 0) {
WARN(1, "Button pressed twice without release event\n");
wcd9xxx_unlock_sleep(core_res);
}
} else {
pr_debug("%s: bogus button press, too short press?\n",
__func__);
}
done:
pr_debug("%s: leave\n", __func__);
mutex_unlock(&mbhc->mbhc_lock);
WCD9XXX_BCL_UNLOCK(mbhc->resmgr);
return IRQ_HANDLED;
}
static irqreturn_t wcd9xxx_release_handler(int irq, void *data)
{
int ret;
bool waitdebounce = true;
struct wcd9xxx_mbhc *mbhc = data;
pr_debug("%s: enter\n", __func__);
WCD9XXX_BCL_LOCK(mbhc->resmgr);
mbhc->mbhc_state = MBHC_STATE_RELEASE;
if (mbhc->buttons_pressed & WCD9XXX_JACK_BUTTON_MASK) {
ret = wcd9xxx_cancel_btn_work(mbhc);
if (ret == 0) {
pr_debug("%s: Reporting long button release event\n",
__func__);
wcd9xxx_jack_report(mbhc, &mbhc->button_jack, 0,
mbhc->buttons_pressed);
} else {
if (wcd9xxx_is_false_press(mbhc)) {
pr_debug("%s: Fake button press interrupt\n",
__func__);
} 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__);
wcd9xxx_jack_report(mbhc,
&mbhc->button_jack,
mbhc->buttons_pressed,
mbhc->buttons_pressed);
pr_debug("%s: Reporting btn release\n",
__func__);
wcd9xxx_jack_report(mbhc,
&mbhc->button_jack,
0, mbhc->buttons_pressed);
waitdebounce = false;
}
}
}
mbhc->buttons_pressed &= ~WCD9XXX_JACK_BUTTON_MASK;
}
wcd9xxx_calibrate_hs_polling(mbhc);
if (waitdebounce)
msleep(SWCH_REL_DEBOUNCE_TIME_MS);
wcd9xxx_start_hs_polling(mbhc);
pr_debug("%s: leave\n", __func__);
WCD9XXX_BCL_UNLOCK(mbhc->resmgr);
return IRQ_HANDLED;
}
static irqreturn_t wcd9xxx_hphl_ocp_irq(int irq, void *data)
{
struct wcd9xxx_mbhc *mbhc = data;
struct snd_soc_codec *codec;
pr_info("%s: received HPHL OCP irq\n", __func__);
if (mbhc) {
codec = mbhc->codec;
if ((mbhc->hphlocp_cnt < OCP_ATTEMPT) &&
(!mbhc->hphrocp_cnt)) {
pr_info("%s: retry\n", __func__);
mbhc->hphlocp_cnt++;
snd_soc_update_bits(codec, WCD9XXX_A_RX_HPH_OCP_CTL,
0x10, 0x00);
snd_soc_update_bits(codec, WCD9XXX_A_RX_HPH_OCP_CTL,
0x10, 0x10);
} else {
wcd9xxx_disable_irq(mbhc->resmgr->core_res,
mbhc->intr_ids->hph_left_ocp);
mbhc->hph_status |= SND_JACK_OC_HPHL;
wcd9xxx_jack_report(mbhc, &mbhc->headset_jack,
mbhc->hph_status,
WCD9XXX_JACK_MASK);
}
} else {
pr_err("%s: Bad wcd9xxx private data\n", __func__);
}
return IRQ_HANDLED;
}
static irqreturn_t wcd9xxx_hphr_ocp_irq(int irq, void *data)
{
struct wcd9xxx_mbhc *mbhc = data;
struct snd_soc_codec *codec;
pr_info("%s: received HPHR OCP irq\n", __func__);
codec = mbhc->codec;
if ((mbhc->hphrocp_cnt < OCP_ATTEMPT) &&
(!mbhc->hphlocp_cnt)) {
pr_info("%s: retry\n", __func__);
mbhc->hphrocp_cnt++;
snd_soc_update_bits(codec, WCD9XXX_A_RX_HPH_OCP_CTL, 0x10,
0x00);
snd_soc_update_bits(codec, WCD9XXX_A_RX_HPH_OCP_CTL, 0x10,
0x10);
} else {
wcd9xxx_disable_irq(mbhc->resmgr->core_res,
mbhc->intr_ids->hph_right_ocp);
mbhc->hph_status |= SND_JACK_OC_HPHR;
wcd9xxx_jack_report(mbhc, &mbhc->headset_jack,
mbhc->hph_status, WCD9XXX_JACK_MASK);
}
return IRQ_HANDLED;
}
static int wcd9xxx_acdb_mclk_index(const int rate)
{
if (rate == MCLK_RATE_12288KHZ)
return 0;
else if (rate == MCLK_RATE_9600KHZ)
return 1;
else {
BUG_ON(1);
return -EINVAL;
}
}
static void wcd9xxx_update_mbhc_clk_rate(struct wcd9xxx_mbhc *mbhc, u32 rate)
{
u32 dce_wait, sta_wait;
u8 ncic, nmeas, navg;
void *calibration;
u8 *n_cic, *n_ready;
struct wcd9xxx_mbhc_btn_detect_cfg *btn_det;
u8 npoll = 4, nbounce_wait = 30;
struct snd_soc_codec *codec = mbhc->codec;
int idx = wcd9xxx_acdb_mclk_index(rate);
int idxmclk = wcd9xxx_acdb_mclk_index(mbhc->mbhc_cfg->mclk_rate);
pr_debug("%s: Updating clock rate dependents, rate = %u\n", __func__,
rate);
calibration = mbhc->mbhc_cfg->calibration;
/*
* First compute the DCE / STA wait times depending on tunable
* parameters. The value is computed in microseconds
*/
btn_det = WCD9XXX_MBHC_CAL_BTN_DET_PTR(calibration);
n_ready = wcd9xxx_mbhc_cal_btn_det_mp(btn_det, MBHC_BTN_DET_N_READY);
n_cic = wcd9xxx_mbhc_cal_btn_det_mp(btn_det, MBHC_BTN_DET_N_CIC);
nmeas = WCD9XXX_MBHC_CAL_BTN_DET_PTR(calibration)->n_meas;
navg = WCD9XXX_MBHC_CAL_GENERAL_PTR(calibration)->mbhc_navg;
/* ncic stays with the same what we had during calibration */
ncic = n_cic[idxmclk];
dce_wait = (1000 * 512 * ncic * (nmeas + 1)) / (rate / 1000);
sta_wait = (1000 * 128 * (navg + 1)) / (rate / 1000);
mbhc->mbhc_data.t_dce = dce_wait;
/* give extra margin to sta for safety */
mbhc->mbhc_data.t_sta = sta_wait + 250;
mbhc->mbhc_data.t_sta_dce = ((1000 * 256) / (rate / 1000) *
n_ready[idx]) + 10;
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_TIMER_B1_CTL, n_ready[idx]);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_TIMER_B6_CTL, ncic);
if (rate == MCLK_RATE_12288KHZ) {
npoll = 4;
nbounce_wait = 30;
} else if (rate == MCLK_RATE_9600KHZ) {
npoll = 3;
nbounce_wait = 23;
}
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_TIMER_B2_CTL, npoll);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_TIMER_B3_CTL, nbounce_wait);
pr_debug("%s: leave\n", __func__);
}
static void wcd9xxx_mbhc_cal(struct wcd9xxx_mbhc *mbhc)
{
u8 cfilt_mode;
u16 reg0, reg1, reg2;
struct snd_soc_codec *codec = mbhc->codec;
pr_debug("%s: enter\n", __func__);
wcd9xxx_disable_irq(mbhc->resmgr->core_res,
mbhc->intr_ids->dce_est_complete);
wcd9xxx_turn_onoff_rel_detection(codec, false);
/* t_dce and t_sta are updated by wcd9xxx_update_mbhc_clk_rate() */
WARN_ON(!mbhc->mbhc_data.t_dce);
WARN_ON(!mbhc->mbhc_data.t_sta);
/*
* LDOH and CFILT are already configured during pdata handling.
* Only need to make sure CFILT and bandgap are in Fast mode.
* Need to restore defaults once calculation is done.
*
* In case when Micbias is powered by external source, request
* turn on the external voltage source for Calibration.
*/
if (mbhc->mbhc_cb && mbhc->mbhc_cb->enable_mb_source)
mbhc->mbhc_cb->enable_mb_source(codec, true, false);
cfilt_mode = snd_soc_read(codec, mbhc->mbhc_bias_regs.cfilt_ctl);
if (mbhc->mbhc_cb && mbhc->mbhc_cb->cfilt_fast_mode)
mbhc->mbhc_cb->cfilt_fast_mode(codec, mbhc);
else
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.cfilt_ctl,
0x40, 0x00);
/*
* Micbias, CFILT, LDOH, MBHC MUX mode settings
* to perform ADC calibration
*/
if (mbhc->mbhc_cb && mbhc->mbhc_cb->select_cfilt)
mbhc->mbhc_cb->select_cfilt(codec, mbhc);
else
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.ctl_reg, 0x60,
mbhc->mbhc_cfg->micbias << 5);
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.ctl_reg, 0x01, 0x00);
snd_soc_update_bits(codec, WCD9XXX_A_LDO_H_MODE_1, 0x60, 0x60);
snd_soc_write(codec, WCD9XXX_A_TX_7_MBHC_TEST_CTL, 0x78);
if (mbhc->mbhc_cb && mbhc->mbhc_cb->codec_specific_cal)
mbhc->mbhc_cb->codec_specific_cal(codec, mbhc);
else
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL,
0x04, 0x04);
/* Pull down micbias to ground */
reg0 = snd_soc_read(codec, mbhc->mbhc_bias_regs.ctl_reg);
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.ctl_reg, 1, 1);
/* Disconnect override from micbias */
reg1 = snd_soc_read(codec, WCD9XXX_A_MAD_ANA_CTRL);
snd_soc_update_bits(codec, WCD9XXX_A_MAD_ANA_CTRL, 1 << 4, 1 << 0);
/* Connect the MUX to micbias */
snd_soc_write(codec, WCD9XXX_A_MBHC_SCALING_MUX_1, 0x02);
if (mbhc->mbhc_cb && mbhc->mbhc_cb->enable_mux_bias_block)
mbhc->mbhc_cb->enable_mux_bias_block(codec);
else
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_SCALING_MUX_1,
0x80, 0x80);
/*
* Hardware that has external cap can delay mic bias ramping down up
* to 50ms.
*/
msleep(WCD9XXX_MUX_SWITCH_READY_WAIT_MS);
/* DCE measurement for 0 voltage */
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x0A);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x02);
mbhc->mbhc_data.dce_z = __wcd9xxx_codec_sta_dce(mbhc, 1, true, false);
/* compute dce_z for current source */
reg2 = snd_soc_read(codec, WCD9XXX_A_CDC_MBHC_B1_CTL);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL, 0x78,
WCD9XXX_MBHC_NSC_CS << 3);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x0A);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x02);
mbhc->mbhc_data.dce_nsc_cs_z = __wcd9xxx_codec_sta_dce(mbhc, 1, true,
false);
pr_debug("%s: dce_z with nsc cs: 0x%x\n", __func__,
mbhc->mbhc_data.dce_nsc_cs_z);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_B1_CTL, reg2);
/* STA measurement for 0 voltage */
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x0A);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x02);
mbhc->mbhc_data.sta_z = __wcd9xxx_codec_sta_dce(mbhc, 0, true, false);
/* Restore registers */
snd_soc_write(codec, mbhc->mbhc_bias_regs.ctl_reg, reg0);
snd_soc_write(codec, WCD9XXX_A_MAD_ANA_CTRL, reg1);
/* DCE measurment for MB voltage */
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x0A);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x02);
snd_soc_write(codec, WCD9XXX_A_MBHC_SCALING_MUX_1, 0x02);
if (mbhc->mbhc_cb && mbhc->mbhc_cb->enable_mux_bias_block)
mbhc->mbhc_cb->enable_mux_bias_block(codec);
else
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_SCALING_MUX_1,
0x80, 0x80);
/*
* Hardware that has external cap can delay mic bias ramping down up
* to 50ms.
*/
msleep(WCD9XXX_MUX_SWITCH_READY_WAIT_MS);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_EN_CTL, 0x04);
usleep_range(mbhc->mbhc_data.t_dce, mbhc->mbhc_data.t_dce);
mbhc->mbhc_data.dce_mb = wcd9xxx_read_dce_result(codec);
/* STA Measurement for MB Voltage */
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x0A);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_EN_CTL, 0x02);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_CLK_CTL, 0x02);
snd_soc_write(codec, WCD9XXX_A_MBHC_SCALING_MUX_1, 0x02);
if (mbhc->mbhc_cb && mbhc->mbhc_cb->enable_mux_bias_block)
mbhc->mbhc_cb->enable_mux_bias_block(codec);
else
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_SCALING_MUX_1,
0x80, 0x80);
/*
* Hardware that has external cap can delay mic bias ramping down up
* to 50ms.
*/
msleep(WCD9XXX_MUX_SWITCH_READY_WAIT_MS);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_EN_CTL, 0x02);
usleep_range(mbhc->mbhc_data.t_sta, mbhc->mbhc_data.t_sta);
mbhc->mbhc_data.sta_mb = wcd9xxx_read_sta_result(codec);
/* Restore default settings. */
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL, 0x04, 0x00);
snd_soc_write(codec, mbhc->mbhc_bias_regs.cfilt_ctl, cfilt_mode);
snd_soc_write(codec, WCD9XXX_A_MBHC_SCALING_MUX_1, 0x04);
if (mbhc->mbhc_cb && mbhc->mbhc_cb->enable_mux_bias_block)
mbhc->mbhc_cb->enable_mux_bias_block(codec);
else
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_SCALING_MUX_1,
0x80, 0x80);
usleep_range(100, 100);
if (mbhc->mbhc_cb && mbhc->mbhc_cb->enable_mb_source)
mbhc->mbhc_cb->enable_mb_source(codec, false, false);
wcd9xxx_enable_irq(mbhc->resmgr->core_res,
mbhc->intr_ids->dce_est_complete);
wcd9xxx_turn_onoff_rel_detection(codec, true);
pr_debug("%s: leave\n", __func__);
}
static void wcd9xxx_mbhc_setup(struct wcd9xxx_mbhc *mbhc)
{
int n;
u8 *gain;
struct wcd9xxx_mbhc_general_cfg *generic;
struct wcd9xxx_mbhc_btn_detect_cfg *btn_det;
struct snd_soc_codec *codec = mbhc->codec;
const int idx = wcd9xxx_acdb_mclk_index(mbhc->mbhc_cfg->mclk_rate);
pr_debug("%s: enter\n", __func__);
generic = WCD9XXX_MBHC_CAL_GENERAL_PTR(mbhc->mbhc_cfg->calibration);
btn_det = WCD9XXX_MBHC_CAL_BTN_DET_PTR(mbhc->mbhc_cfg->calibration);
for (n = 0; n < 8; n++) {
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_FIR_B1_CFG,
0x07, n);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_FIR_B2_CFG,
btn_det->c[n]);
}
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B2_CTL, 0x07,
btn_det->nc);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_TIMER_B4_CTL, 0x70,
generic->mbhc_nsa << 4);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_TIMER_B4_CTL, 0x0F,
btn_det->n_meas);
snd_soc_write(codec, WCD9XXX_A_CDC_MBHC_TIMER_B5_CTL,
generic->mbhc_navg);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL, 0x80, 0x80);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL, 0x78,
btn_det->mbhc_nsc << 3);
if (mbhc->mbhc_cb &&
mbhc->mbhc_cb->get_cdc_type() !=
WCD9XXX_CDC_TYPE_HELICON) {
if (mbhc->resmgr->reg_addr->micb_4_mbhc)
snd_soc_update_bits(codec,
mbhc->resmgr->reg_addr->micb_4_mbhc,
0x03, MBHC_MICBIAS2);
}
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B1_CTL, 0x02, 0x02);
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_SCALING_MUX_2, 0xF0, 0xF0);
gain = wcd9xxx_mbhc_cal_btn_det_mp(btn_det, MBHC_BTN_DET_GAIN);
snd_soc_update_bits(codec, WCD9XXX_A_CDC_MBHC_B2_CTL, 0x78,
gain[idx] << 3);
snd_soc_update_bits(codec, WCD9XXX_A_MICB_2_MBHC, 0x04, 0x04);
pr_debug("%s: leave\n", __func__);
}
static int wcd9xxx_setup_jack_detect_irq(struct wcd9xxx_mbhc *mbhc)
{
int ret = 0;
void *core_res = mbhc->resmgr->core_res;
if (mbhc->mbhc_cfg->gpio) {
ret = request_threaded_irq(mbhc->mbhc_cfg->gpio_irq, NULL,
wcd9xxx_mech_plug_detect_irq,
(IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING |
IRQF_DISABLED),
"headset detect", mbhc);
if (ret) {
pr_err("%s: Failed to request gpio irq %d\n", __func__,
mbhc->mbhc_cfg->gpio_irq);
} else {
ret = enable_irq_wake(mbhc->mbhc_cfg->gpio_irq);
if (ret)
pr_err("%s: Failed to enable wake up irq %d\n",
__func__, mbhc->mbhc_cfg->gpio_irq);
}
} else if (mbhc->mbhc_cfg->insert_detect) {
/* Enable HPHL_10K_SW */
snd_soc_update_bits(mbhc->codec, WCD9XXX_A_RX_HPH_OCP_CTL,
1 << 1, 1 << 1);
ret = wcd9xxx_request_irq(core_res,
mbhc->intr_ids->hs_jack_switch,
wcd9xxx_mech_plug_detect_irq,
"Jack Detect",
mbhc);
if (ret)
pr_err("%s: Failed to request insert detect irq %d\n",
__func__, mbhc->intr_ids->hs_jack_switch);
}
return ret;
}
static int wcd9xxx_init_and_calibrate(struct wcd9xxx_mbhc *mbhc)
{
int ret = 0;
struct snd_soc_codec *codec = mbhc->codec;
pr_debug("%s: enter\n", __func__);
/* Enable MCLK during calibration */
wcd9xxx_onoff_ext_mclk(mbhc, true);
wcd9xxx_mbhc_setup(mbhc);
wcd9xxx_mbhc_cal(mbhc);
wcd9xxx_mbhc_calc_thres(mbhc);
wcd9xxx_onoff_ext_mclk(mbhc, false);
wcd9xxx_calibrate_hs_polling(mbhc);
/* Enable Mic Bias pull down and HPH Switch to GND */
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.ctl_reg, 0x01, 0x01);
snd_soc_update_bits(codec, WCD9XXX_A_MBHC_HPH, 0x01, 0x01);
INIT_WORK(&mbhc->correct_plug_swch, wcd9xxx_correct_swch_plug);
if (!IS_ERR_VALUE(ret)) {
snd_soc_update_bits(codec, WCD9XXX_A_RX_HPH_OCP_CTL, 0x10,
0x10);
wcd9xxx_enable_irq(mbhc->resmgr->core_res,
mbhc->intr_ids->hph_left_ocp);
wcd9xxx_enable_irq(mbhc->resmgr->core_res,
mbhc->intr_ids->hph_right_ocp);
/* Initialize mechanical mbhc */
ret = wcd9xxx_setup_jack_detect_irq(mbhc);
if (!ret && mbhc->mbhc_cfg->gpio) {
/* Requested with IRQF_DISABLED */
enable_irq(mbhc->mbhc_cfg->gpio_irq);
/* Bootup time detection */
wcd9xxx_swch_irq_handler(mbhc);
} else if (!ret && mbhc->mbhc_cfg->insert_detect) {
pr_debug("%s: Setting up codec own insert detection\n",
__func__);
/* Setup for insertion detection */
wcd9xxx_insert_detect_setup(mbhc, true);
}
}
pr_debug("%s: leave\n", __func__);
return ret;
}
static void wcd9xxx_mbhc_fw_read(struct work_struct *work)
{
struct delayed_work *dwork;
struct wcd9xxx_mbhc *mbhc;
struct snd_soc_codec *codec;
const struct firmware *fw;
int ret = -1, retry = 0;
dwork = to_delayed_work(work);
mbhc = container_of(dwork, struct wcd9xxx_mbhc, mbhc_firmware_dwork);
codec = mbhc->codec;
while (retry < FW_READ_ATTEMPTS) {
retry++;
pr_info("%s:Attempt %d to request MBHC firmware\n",
__func__, retry);
ret = request_firmware(&fw, "wcd9320/wcd9320_mbhc.bin",
codec->dev);
if (ret != 0) {
usleep_range(FW_READ_TIMEOUT, FW_READ_TIMEOUT);
} else {
pr_info("%s: MBHC Firmware read succesful\n", __func__);
break;
}
}
if (ret != 0) {
pr_err("%s: Cannot load MBHC firmware use default cal\n",
__func__);
} else if (wcd9xxx_mbhc_fw_validate(fw) == false) {
pr_err("%s: Invalid MBHC cal data size use default cal\n",
__func__);
release_firmware(fw);
} else {
mbhc->mbhc_cfg->calibration = (void *)fw->data;
mbhc->mbhc_fw = fw;
}
(void) wcd9xxx_init_and_calibrate(mbhc);
}
#ifdef CONFIG_DEBUG_FS
ssize_t codec_mbhc_debug_read(struct file *file, char __user *buf,
size_t count, loff_t *pos)
{
const int size = 768;
char buffer[size];
int n = 0;
struct wcd9xxx_mbhc *mbhc = file->private_data;
const struct mbhc_internal_cal_data *p = &mbhc->mbhc_data;
const s16 v_ins_hu =
wcd9xxx_get_current_v(mbhc, WCD9XXX_CURRENT_V_INS_HU);
const s16 v_ins_h =
wcd9xxx_get_current_v(mbhc, WCD9XXX_CURRENT_V_INS_H);
const s16 v_b1_hu =
wcd9xxx_get_current_v(mbhc, WCD9XXX_CURRENT_V_B1_HU);
const s16 v_b1_h =
wcd9xxx_get_current_v(mbhc, WCD9XXX_CURRENT_V_B1_H);
const s16 v_br_h =
wcd9xxx_get_current_v(mbhc, WCD9XXX_CURRENT_V_BR_H);
n = scnprintf(buffer, size - n, "dce_z = %x(%dmv)\n",
p->dce_z, wcd9xxx_codec_sta_dce_v(mbhc, 1, p->dce_z));
n += scnprintf(buffer + n, size - n, "dce_mb = %x(%dmv)\n",
p->dce_mb, wcd9xxx_codec_sta_dce_v(mbhc, 1, p->dce_mb));
n += scnprintf(buffer + n, size - n, "dce_nsc_cs_z = %x(%dmv)\n",
p->dce_nsc_cs_z,
__wcd9xxx_codec_sta_dce_v(mbhc, 1, p->dce_nsc_cs_z,
p->dce_nsc_cs_z,
VDDIO_MICBIAS_MV));
n += scnprintf(buffer + n, size - n, "sta_z = %x(%dmv)\n",
p->sta_z, wcd9xxx_codec_sta_dce_v(mbhc, 0, p->sta_z));
n += scnprintf(buffer + n, size - n, "sta_mb = %x(%dmv)\n",
p->sta_mb, wcd9xxx_codec_sta_dce_v(mbhc, 0, p->sta_mb));
n += scnprintf(buffer + n, size - n, "t_dce = %d\n", p->t_dce);
n += scnprintf(buffer + n, size - n, "t_sta = %d\n", p->t_sta);
n += scnprintf(buffer + n, size - n, "micb_mv = %dmv\n", p->micb_mv);
n += scnprintf(buffer + n, size - n, "v_ins_hu = %x(%dmv)\n",
v_ins_hu, wcd9xxx_codec_sta_dce_v(mbhc, 0, v_ins_hu));
n += scnprintf(buffer + n, size - n, "v_ins_h = %x(%dmv)\n",
v_ins_h, wcd9xxx_codec_sta_dce_v(mbhc, 1, v_ins_h));
n += scnprintf(buffer + n, size - n, "v_b1_hu = %x(%dmv)\n",
v_b1_hu, wcd9xxx_codec_sta_dce_v(mbhc, 0, v_b1_hu));
n += scnprintf(buffer + n, size - n, "v_b1_h = %x(%dmv)\n",
v_b1_h, wcd9xxx_codec_sta_dce_v(mbhc, 1, v_b1_h));
n += scnprintf(buffer + n, size - n, "v_brh = %x(%dmv)\n",
v_br_h, wcd9xxx_codec_sta_dce_v(mbhc, 1, v_br_h));
n += scnprintf(buffer + n, size - n, "v_brl = %x(%dmv)\n", p->v_brl,
wcd9xxx_codec_sta_dce_v(mbhc, 0, p->v_brl));
n += scnprintf(buffer + n, size - n, "v_no_mic = %x(%dmv)\n",
p->v_no_mic,
wcd9xxx_codec_sta_dce_v(mbhc, 0, p->v_no_mic));
n += scnprintf(buffer + n, size - n, "v_inval_ins_low = %d\n",
p->v_inval_ins_low);
n += scnprintf(buffer + n, size - n, "v_inval_ins_high = %d\n",
p->v_inval_ins_high);
n += scnprintf(buffer + n, size - n, "Insert detect insert = %d\n",
!wcd9xxx_swch_level_remove(mbhc));
buffer[n] = 0;
return simple_read_from_buffer(buf, count, pos, buffer, n);
}
static int codec_debug_open(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
return 0;
}
static ssize_t codec_debug_write(struct file *filp,
const char __user *ubuf, size_t cnt,
loff_t *ppos)
{
char lbuf[32];
char *buf;
int rc;
struct wcd9xxx_mbhc *mbhc = filp->private_data;
if (cnt > sizeof(lbuf) - 1)
return -EINVAL;
rc = copy_from_user(lbuf, ubuf, cnt);
if (rc)
return -EFAULT;
lbuf[cnt] = '\0';
buf = (char *)lbuf;
mbhc->no_mic_headset_override = (*strsep(&buf, " ") == '0') ?
false : true;
return rc;
}
static const struct file_operations mbhc_trrs_debug_ops = {
.open = codec_debug_open,
.write = codec_debug_write,
};
static const struct file_operations mbhc_debug_ops = {
.open = codec_debug_open,
.read = codec_mbhc_debug_read,
};
static void wcd9xxx_init_debugfs(struct wcd9xxx_mbhc *mbhc)
{
mbhc->debugfs_poke =
debugfs_create_file("TRRS", S_IFREG | S_IRUGO, NULL, mbhc,
&mbhc_trrs_debug_ops);
mbhc->debugfs_mbhc =
debugfs_create_file("wcd9xxx_mbhc", S_IFREG | S_IRUGO,
NULL, mbhc, &mbhc_debug_ops);
}
static void wcd9xxx_cleanup_debugfs(struct wcd9xxx_mbhc *mbhc)
{
debugfs_remove(mbhc->debugfs_poke);
debugfs_remove(mbhc->debugfs_mbhc);
}
#else
static void wcd9xxx_init_debugfs(struct wcd9xxx_mbhc *mbhc)
{
}
static void wcd9xxx_cleanup_debugfs(struct wcd9xxx_mbhc *mbhc)
{
}
#endif
int wcd9xxx_mbhc_start(struct wcd9xxx_mbhc *mbhc,
struct wcd9xxx_mbhc_config *mbhc_cfg)
{
int rc = 0;
struct snd_soc_codec *codec = mbhc->codec;
pr_debug("%s: enter\n", __func__);
if (!codec) {
pr_err("%s: no codec\n", __func__);
return -EINVAL;
}
if (mbhc_cfg->mclk_rate != MCLK_RATE_12288KHZ &&
mbhc_cfg->mclk_rate != MCLK_RATE_9600KHZ) {
pr_err("Error: unsupported clock rate %d\n",
mbhc_cfg->mclk_rate);
return -EINVAL;
}
/* Save mbhc config */
mbhc->mbhc_cfg = mbhc_cfg;
/* Get HW specific mbhc registers' address */
wcd9xxx_get_mbhc_micbias_regs(mbhc, MBHC_PRIMARY_MIC_MB);
/* Get HW specific mbhc registers' address for anc */
wcd9xxx_get_mbhc_micbias_regs(mbhc, MBHC_ANC_MIC_MB);
/* Put CFILT in fast mode by default */
if (mbhc->mbhc_cb && mbhc->mbhc_cb->cfilt_fast_mode)
mbhc->mbhc_cb->cfilt_fast_mode(codec, mbhc);
else
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.cfilt_ctl,
0x40, WCD9XXX_CFILT_FAST_MODE);
/*
* setup internal micbias if codec uses internal micbias for
* headset detection
*/
if (mbhc->mbhc_cfg->use_int_rbias) {
if (mbhc->mbhc_cb && mbhc->mbhc_cb->setup_int_rbias) {
mbhc->mbhc_cb->setup_int_rbias(codec, true);
} else {
pr_info("%s: internal bias requested but codec did not provide callback\n",
__func__);
}
}
/*
* If codec has specific clock gating for MBHC,
* remove the clock gate
*/
if (mbhc->mbhc_cb &&
mbhc->mbhc_cb->enable_clock_gate)
mbhc->mbhc_cb->enable_clock_gate(mbhc->codec, true);
if (!mbhc->mbhc_cfg->read_fw_bin ||
(mbhc->mbhc_cfg->read_fw_bin && mbhc->mbhc_fw)) {
rc = wcd9xxx_init_and_calibrate(mbhc);
} else {
if (!mbhc->mbhc_fw)
schedule_delayed_work(&mbhc->mbhc_firmware_dwork,
usecs_to_jiffies(FW_READ_TIMEOUT));
else
pr_debug("%s: Skipping to read mbhc fw, 0x%p\n",
__func__, mbhc->mbhc_fw);
}
pr_debug("%s: leave %d\n", __func__, rc);
return rc;
}
EXPORT_SYMBOL(wcd9xxx_mbhc_start);
void wcd9xxx_mbhc_stop(struct wcd9xxx_mbhc *mbhc)
{
if (mbhc->mbhc_fw) {
cancel_delayed_work_sync(&mbhc->mbhc_firmware_dwork);
release_firmware(mbhc->mbhc_fw);
mbhc->mbhc_fw = NULL;
}
}
EXPORT_SYMBOL(wcd9xxx_mbhc_stop);
static enum wcd9xxx_micbias_num
wcd9xxx_event_to_micbias(const enum wcd9xxx_notify_event event)
{
enum wcd9xxx_micbias_num ret;
switch (event) {
case WCD9XXX_EVENT_PRE_MICBIAS_1_ON:
case WCD9XXX_EVENT_PRE_MICBIAS_1_OFF:
case WCD9XXX_EVENT_POST_MICBIAS_1_ON:
case WCD9XXX_EVENT_POST_MICBIAS_1_OFF:
ret = MBHC_MICBIAS1;
break;
case WCD9XXX_EVENT_PRE_MICBIAS_2_ON:
case WCD9XXX_EVENT_PRE_MICBIAS_2_OFF:
case WCD9XXX_EVENT_POST_MICBIAS_2_ON:
case WCD9XXX_EVENT_POST_MICBIAS_2_OFF:
ret = MBHC_MICBIAS2;
break;
case WCD9XXX_EVENT_PRE_MICBIAS_3_ON:
case WCD9XXX_EVENT_PRE_MICBIAS_3_OFF:
case WCD9XXX_EVENT_POST_MICBIAS_3_ON:
case WCD9XXX_EVENT_POST_MICBIAS_3_OFF:
ret = MBHC_MICBIAS3;
break;
case WCD9XXX_EVENT_PRE_MICBIAS_4_ON:
case WCD9XXX_EVENT_PRE_MICBIAS_4_OFF:
case WCD9XXX_EVENT_POST_MICBIAS_4_ON:
case WCD9XXX_EVENT_POST_MICBIAS_4_OFF:
ret = MBHC_MICBIAS4;
break;
default:
WARN_ONCE(1, "Cannot convert event %d to micbias\n", event);
ret = MBHC_MICBIAS_INVALID;
break;
}
return ret;
}
static int wcd9xxx_event_to_cfilt(const enum wcd9xxx_notify_event event)
{
int ret;
switch (event) {
case WCD9XXX_EVENT_PRE_CFILT_1_OFF:
case WCD9XXX_EVENT_POST_CFILT_1_OFF:
case WCD9XXX_EVENT_PRE_CFILT_1_ON:
case WCD9XXX_EVENT_POST_CFILT_1_ON:
ret = WCD9XXX_CFILT1_SEL;
break;
case WCD9XXX_EVENT_PRE_CFILT_2_OFF:
case WCD9XXX_EVENT_POST_CFILT_2_OFF:
case WCD9XXX_EVENT_PRE_CFILT_2_ON:
case WCD9XXX_EVENT_POST_CFILT_2_ON:
ret = WCD9XXX_CFILT2_SEL;
break;
case WCD9XXX_EVENT_PRE_CFILT_3_OFF:
case WCD9XXX_EVENT_POST_CFILT_3_OFF:
case WCD9XXX_EVENT_PRE_CFILT_3_ON:
case WCD9XXX_EVENT_POST_CFILT_3_ON:
ret = WCD9XXX_CFILT3_SEL;
break;
default:
ret = -1;
}
return ret;
}
static int wcd9xxx_get_mbhc_cfilt_sel(struct wcd9xxx_mbhc *mbhc)
{
int cfilt;
const struct wcd9xxx_micbias_setting *mb_pdata =
mbhc->resmgr->micbias_pdata;
switch (mbhc->mbhc_cfg->micbias) {
case MBHC_MICBIAS1:
cfilt = mb_pdata->bias1_cfilt_sel;
break;
case MBHC_MICBIAS2:
cfilt = mb_pdata->bias2_cfilt_sel;
break;
case MBHC_MICBIAS3:
cfilt = mb_pdata->bias3_cfilt_sel;
break;
case MBHC_MICBIAS4:
cfilt = mb_pdata->bias4_cfilt_sel;
break;
default:
cfilt = MBHC_MICBIAS_INVALID;
break;
}
return cfilt;
}
static void wcd9xxx_enable_mbhc_txfe(struct wcd9xxx_mbhc *mbhc, bool on)
{
if (mbhc->mbhc_cb && mbhc->mbhc_cb->enable_mbhc_txfe)
mbhc->mbhc_cb->enable_mbhc_txfe(mbhc->codec, on);
else
snd_soc_update_bits(mbhc->codec, WCD9XXX_A_TX_7_MBHC_TEST_CTL,
0x40, on ? 0x40 : 0x00);
}
static int wcd9xxx_event_notify(struct notifier_block *self, unsigned long val,
void *data)
{
int ret = 0;
struct wcd9xxx_mbhc *mbhc = ((struct wcd9xxx_resmgr *)data)->mbhc;
struct snd_soc_codec *codec = mbhc->codec;
enum wcd9xxx_notify_event event = (enum wcd9xxx_notify_event)val;
pr_debug("%s: enter event %s(%d)\n", __func__,
wcd9xxx_get_event_string(event), event);
mutex_lock(&mbhc->mbhc_lock);
switch (event) {
/* MICBIAS usage change */
case WCD9XXX_EVENT_PRE_MICBIAS_1_ON:
case WCD9XXX_EVENT_PRE_MICBIAS_2_ON:
case WCD9XXX_EVENT_PRE_MICBIAS_3_ON:
case WCD9XXX_EVENT_PRE_MICBIAS_4_ON:
if (mbhc->mbhc_cfg && mbhc->mbhc_cfg->micbias ==
wcd9xxx_event_to_micbias(event)) {
wcd9xxx_switch_micbias(mbhc, 0);
/*
* Enable MBHC TxFE whenever micbias is
* turned ON and polling is active
*/
if (mbhc->polling_active)
wcd9xxx_enable_mbhc_txfe(mbhc, true);
}
break;
case WCD9XXX_EVENT_POST_MICBIAS_1_ON:
case WCD9XXX_EVENT_POST_MICBIAS_2_ON:
case WCD9XXX_EVENT_POST_MICBIAS_3_ON:
case WCD9XXX_EVENT_POST_MICBIAS_4_ON:
if (mbhc->mbhc_cfg && mbhc->mbhc_cfg->micbias ==
wcd9xxx_event_to_micbias(event) &&
wcd9xxx_mbhc_polling(mbhc)) {
/* if polling is on, restart it */
wcd9xxx_pause_hs_polling(mbhc);
wcd9xxx_start_hs_polling(mbhc);
}
break;
case WCD9XXX_EVENT_POST_MICBIAS_1_OFF:
case WCD9XXX_EVENT_POST_MICBIAS_2_OFF:
case WCD9XXX_EVENT_POST_MICBIAS_3_OFF:
case WCD9XXX_EVENT_POST_MICBIAS_4_OFF:
if (mbhc->mbhc_cfg && mbhc->mbhc_cfg->micbias ==
wcd9xxx_event_to_micbias(event)) {
if (mbhc->event_state &
(1 << MBHC_EVENT_PA_HPHL | 1 << MBHC_EVENT_PA_HPHR))
wcd9xxx_switch_micbias(mbhc, 1);
/*
* Disable MBHC TxFE, in case it was enabled earlier
* when micbias was enabled and polling is not active.
*/
if (!mbhc->polling_active)
wcd9xxx_enable_mbhc_txfe(mbhc, false);
}
if (mbhc->micbias_enable && mbhc->polling_active &&
!(snd_soc_read(mbhc->codec, mbhc->mbhc_bias_regs.ctl_reg)
& 0x80)) {
pr_debug("%s:Micbias turned off by recording, set up again",
__func__);
snd_soc_update_bits(codec, mbhc->mbhc_bias_regs.ctl_reg,
0x80, 0x80);
}
break;
/* PA usage change */
case WCD9XXX_EVENT_PRE_HPHL_PA_ON:
set_bit(MBHC_EVENT_PA_HPHL, &mbhc->event_state);
if (!(snd_soc_read(codec, mbhc->mbhc_bias_regs.ctl_reg) & 0x80))
/* if micbias is not enabled, switch to vddio */
wcd9xxx_switch_micbias(mbhc, 1);
break;
case WCD9XXX_EVENT_PRE_HPHR_PA_ON:
set_bit(MBHC_EVENT_PA_HPHR, &mbhc->event_state);
break;
case WCD9XXX_EVENT_POST_HPHL_PA_OFF:
clear_bit(MBHC_EVENT_PA_HPHL, &mbhc->event_state);
/* if HPH PAs are off, report OCP and switch back to CFILT */
clear_bit(WCD9XXX_HPHL_PA_OFF_ACK, &mbhc->hph_pa_dac_state);
clear_bit(WCD9XXX_HPHL_DAC_OFF_ACK, &mbhc->hph_pa_dac_state);
if (mbhc->hph_status & SND_JACK_OC_HPHL)
hphlocp_off_report(mbhc, SND_JACK_OC_HPHL);
if (!(mbhc->event_state &
(1 << MBHC_EVENT_PA_HPHL | 1 << MBHC_EVENT_PA_HPHR |
1 << MBHC_EVENT_PRE_TX_1_3_ON)))
wcd9xxx_switch_micbias(mbhc, 0);
break;
case WCD9XXX_EVENT_POST_HPHR_PA_OFF:
clear_bit(MBHC_EVENT_PA_HPHR, &mbhc->event_state);
/* if HPH PAs are off, report OCP and switch back to CFILT */
clear_bit(WCD9XXX_HPHR_PA_OFF_ACK, &mbhc->hph_pa_dac_state);
clear_bit(WCD9XXX_HPHR_DAC_OFF_ACK, &mbhc->hph_pa_dac_state);
if (mbhc->hph_status & SND_JACK_OC_HPHR)
hphrocp_off_report(mbhc, SND_JACK_OC_HPHL);
if (!(mbhc->event_state &
(1 << MBHC_EVENT_PA_HPHL | 1 << MBHC_EVENT_PA_HPHR |
1 << MBHC_EVENT_PRE_TX_1_3_ON)))
wcd9xxx_switch_micbias(mbhc, 0);
break;
/* Clock usage change */
case WCD9XXX_EVENT_PRE_MCLK_ON:
break;
case WCD9XXX_EVENT_POST_MCLK_ON:
/* Change to lower TxAAF frequency */
snd_soc_update_bits(codec, WCD9XXX_A_TX_COM_BIAS, 1 << 4,
1 << 4);
/* Re-calibrate clock rate dependent values */
wcd9xxx_update_mbhc_clk_rate(mbhc, mbhc->mbhc_cfg->mclk_rate);
/* If clock source changes, stop and restart polling */
if (wcd9xxx_mbhc_polling(mbhc)) {
wcd9xxx_calibrate_hs_polling(mbhc);
wcd9xxx_start_hs_polling(mbhc);
}
break;
case WCD9XXX_EVENT_PRE_MCLK_OFF:
/* If clock source changes, stop and restart polling */
if (wcd9xxx_mbhc_polling(mbhc))
wcd9xxx_pause_hs_polling(mbhc);
break;
case WCD9XXX_EVENT_POST_MCLK_OFF:
break;
case WCD9XXX_EVENT_PRE_RCO_ON:
break;
case WCD9XXX_EVENT_POST_RCO_ON:
/* Change to higher TxAAF frequency */
snd_soc_update_bits(codec, WCD9XXX_A_TX_COM_BIAS, 1 << 4,
0 << 4);
/* Re-calibrate clock rate dependent values */
wcd9xxx_update_mbhc_clk_rate(mbhc, mbhc->rco_clk_rate);
/* If clock source changes, stop and restart polling */
if (wcd9xxx_mbhc_polling(mbhc)) {
wcd9xxx_calibrate_hs_polling(mbhc);
wcd9xxx_start_hs_polling(mbhc);
}
break;
case WCD9XXX_EVENT_PRE_RCO_OFF:
/* If clock source changes, stop and restart polling */
if (wcd9xxx_mbhc_polling(mbhc))
wcd9xxx_pause_hs_polling(mbhc);
break;
case WCD9XXX_EVENT_POST_RCO_OFF:
break;
/* CFILT usage change */
case WCD9XXX_EVENT_PRE_CFILT_1_ON:
case WCD9XXX_EVENT_PRE_CFILT_2_ON:
case WCD9XXX_EVENT_PRE_CFILT_3_ON:
if (wcd9xxx_get_mbhc_cfilt_sel(mbhc) ==
wcd9xxx_event_to_cfilt(event))
/*
* Switch CFILT to slow mode if MBHC CFILT is being
* used.
*/
wcd9xxx_codec_switch_cfilt_mode(mbhc, false);
break;
case WCD9XXX_EVENT_POST_CFILT_1_OFF:
case WCD9XXX_EVENT_POST_CFILT_2_OFF:
case WCD9XXX_EVENT_POST_CFILT_3_OFF:
if (wcd9xxx_get_mbhc_cfilt_sel(mbhc) ==
wcd9xxx_event_to_cfilt(event))
/*
* Switch CFILT to fast mode if MBHC CFILT is not
* used anymore.
*/
wcd9xxx_codec_switch_cfilt_mode(mbhc, true);
break;
/* System resume */
case WCD9XXX_EVENT_POST_RESUME:
mbhc->mbhc_last_resume = jiffies;
break;
/* BG mode chage */
case WCD9XXX_EVENT_PRE_BG_OFF:
case WCD9XXX_EVENT_POST_BG_OFF:
case WCD9XXX_EVENT_PRE_BG_AUDIO_ON:
case WCD9XXX_EVENT_POST_BG_AUDIO_ON:
case WCD9XXX_EVENT_PRE_BG_MBHC_ON:
case WCD9XXX_EVENT_POST_BG_MBHC_ON:
/* Not used for now */
break;
case WCD9XXX_EVENT_PRE_TX_1_3_ON:
/*
* if polling is ON, mbhc micbias not enabled
* switch micbias source to VDDIO
*/
set_bit(MBHC_EVENT_PRE_TX_1_3_ON, &mbhc->event_state);
if (!(snd_soc_read(codec, mbhc->mbhc_bias_regs.ctl_reg)
& 0x80) &&
mbhc->polling_active && !mbhc->mbhc_micbias_switched)
wcd9xxx_switch_micbias(mbhc, 1);
break;
case WCD9XXX_EVENT_POST_TX_1_3_OFF:
/*
* Switch back to micbias if HPH PA or TX3 path
* is disabled
*/
clear_bit(MBHC_EVENT_PRE_TX_1_3_ON, &mbhc->event_state);
if (mbhc->polling_active && mbhc->mbhc_micbias_switched &&
!(mbhc->event_state & (1 << MBHC_EVENT_PA_HPHL |
1 << MBHC_EVENT_PA_HPHR)))
wcd9xxx_switch_micbias(mbhc, 0);
break;
default:
WARN(1, "Unknown event %d\n", event);
ret = -EINVAL;
}
mutex_unlock(&mbhc->mbhc_lock);
pr_debug("%s: leave\n", __func__);
return ret;
}
static int wcd9xxx_detect_impedance(struct wcd9xxx_mbhc *mbhc, uint32_t *zl,
uint32_t *zr)
{
int i;
int ret = 0;
s16 l[3], r[3];
s16 *z[] = {
&l[0], &r[0], &r[1], &l[1], &l[2], &r[2],
};
bool override_en;
struct snd_soc_codec *codec = mbhc->codec;
const int mux_wait_us = 25;
const struct wcd9xxx_reg_mask_val reg_set_mux[] = {
/* Phase 1 */
/* Set MBHC_MUX for HPHL without ical */
{WCD9XXX_A_MBHC_SCALING_MUX_2, 0xFF, 0xF0},
/* Set MBHC_MUX for HPHR without ical */
{WCD9XXX_A_MBHC_SCALING_MUX_1, 0xFF, 0xA0},
/* Set MBHC_MUX for HPHR with ical */
{WCD9XXX_A_MBHC_SCALING_MUX_2, 0xFF, 0xF8},
/* Set MBHC_MUX for HPHL with ical */
{WCD9XXX_A_MBHC_SCALING_MUX_1, 0xFF, 0xC0},
/* Phase 2 */
{WCD9XXX_A_MBHC_SCALING_MUX_2, 0xFF, 0xF0},
/* Set MBHC_MUX for HPHR without ical and wait for 25us */
{WCD9XXX_A_MBHC_SCALING_MUX_1, 0xFF, 0xA0},
};
pr_debug("%s: enter\n", __func__);
WCD9XXX_BCL_ASSERT_LOCKED(mbhc->resmgr);
if (!mbhc->mbhc_cb || !mbhc->mbhc_cb->setup_zdet ||
!mbhc->mbhc_cb->compute_impedance || !zl ||
!zr)
return -EINVAL;
/*
* Impedance detection is an intrusive function as it mutes RX paths,
* enable PAs and etc. Therefore codec drvier including ALSA
* shouldn't read and write hardware registers during detection.
*/
mutex_lock(&codec->mutex);
wcd9xxx_onoff_ext_mclk(mbhc, true);
override_en = (snd_soc_read(codec, WCD9XXX_A_CDC_MBHC_B1_CTL) & 0x04) ?
true : false;
if (!override_en)
wcd9xxx_turn_onoff_override(mbhc, true);
pr_debug("%s: Setting impedance detection\n", __func__);
/* Codec specific setup for L0, R0, L1 and R1 measurements */
mbhc->mbhc_cb->setup_zdet(mbhc, PRE_MEAS);
pr_debug("%s: Performing impedance detection\n", __func__);
for (i = 0; i < ARRAY_SIZE(reg_set_mux) - 2; i++) {
snd_soc_update_bits(codec, reg_set_mux[i].reg,
reg_set_mux[i].mask,
reg_set_mux[i].val);
if (mbhc->mbhc_cb && mbhc->mbhc_cb->enable_mux_bias_block)
mbhc->mbhc_cb->enable_mux_bias_block(codec);
else
snd_soc_update_bits(codec,
WCD9XXX_A_MBHC_SCALING_MUX_1,
0x80, 0x80);
/* 25us is required after mux change to settle down */
usleep_range(mux_wait_us,
mux_wait_us + WCD9XXX_USLEEP_RANGE_MARGIN_US);
*(z[i]) = __wcd9xxx_codec_sta_dce(mbhc, 0, true, false);
}
/* Codec specific setup for L2 and R2 measurements */
mbhc->mbhc_cb->setup_zdet(mbhc, POST_MEAS);
for (; i < ARRAY_SIZE(reg_set_mux); i++) {
snd_soc_update_bits(codec, reg_set_mux[i].reg,
reg_set_mux[i].mask,
reg_set_mux[i].val);
if (mbhc->mbhc_cb && mbhc->mbhc_cb->enable_mux_bias_block)
mbhc->mbhc_cb->enable_mux_bias_block(codec);
else
snd_soc_update_bits(codec,
WCD9XXX_A_MBHC_SCALING_MUX_1,
0x80, 0x80);
/* 25us is required after mux change to settle down */
usleep_range(mux_wait_us,
mux_wait_us + WCD9XXX_USLEEP_RANGE_MARGIN_US);
*(z[i]) = __wcd9xxx_codec_sta_dce(mbhc, 0, true, false);
}
mbhc->mbhc_cb->setup_zdet(mbhc, PA_DISABLE);
mutex_unlock(&codec->mutex);
wcd9xxx_onoff_ext_mclk(mbhc, false);
if (!override_en)
wcd9xxx_turn_onoff_override(mbhc, false);
mbhc->mbhc_cb->compute_impedance(l, r, zl, zr);
pr_debug("%s: L0: 0x%x(%d), L1: 0x%x(%d), L2: 0x%x(%d)\n",
__func__,
l[0] & 0xffff, l[0], l[1] & 0xffff, l[1], l[2] & 0xffff, l[2]);
pr_debug("%s: R0: 0x%x(%d), R1: 0x%x(%d), R2: 0x%x(%d)\n",
__func__,
r[0] & 0xffff, r[0], r[1] & 0xffff, r[1], r[2] & 0xffff, r[2]);
pr_debug("%s: RL %d milliohm, RR %d milliohm\n", __func__, *zl, *zr);
pr_debug("%s: Impedance detection completed\n", __func__);
return ret;
}
int wcd9xxx_mbhc_get_impedance(struct wcd9xxx_mbhc *mbhc, uint32_t *zl,
uint32_t *zr)
{
*zl = mbhc->zl;
*zr = mbhc->zr;
if (*zl && *zr)
return 0;
else
return -EINVAL;
}
/*
* wcd9xxx_mbhc_init : initialize MBHC internal structures.
*
* NOTE: mbhc->mbhc_cfg is not YET configure so shouldn't be used
*/
int wcd9xxx_mbhc_init(struct wcd9xxx_mbhc *mbhc, struct wcd9xxx_resmgr *resmgr,
struct snd_soc_codec *codec,
int (*micbias_enable_cb) (struct snd_soc_codec*, bool,
enum wcd9xxx_micbias_num),
const struct wcd9xxx_mbhc_cb *mbhc_cb,
const struct wcd9xxx_mbhc_intr *mbhc_cdc_intr_ids,
int rco_clk_rate,
bool impedance_det_en)
{
int ret;
void *core_res;
pr_debug("%s: enter\n", __func__);
memset(&mbhc->mbhc_bias_regs, 0, sizeof(struct mbhc_micbias_regs));
memset(&mbhc->mbhc_data, 0, sizeof(struct mbhc_internal_cal_data));
mbhc->mbhc_data.t_sta_dce = DEFAULT_DCE_STA_WAIT;
mbhc->mbhc_data.t_dce = DEFAULT_DCE_WAIT;
mbhc->mbhc_data.t_sta = DEFAULT_STA_WAIT;
mbhc->mbhc_micbias_switched = false;
mbhc->polling_active = false;
mbhc->mbhc_state = MBHC_STATE_NONE;
mbhc->in_swch_irq_handler = false;
mbhc->current_plug = PLUG_TYPE_NONE;
mbhc->lpi_enabled = false;
mbhc->no_mic_headset_override = false;
mbhc->mbhc_last_resume = 0;
mbhc->codec = codec;
mbhc->resmgr = resmgr;
mbhc->resmgr->mbhc = mbhc;
mbhc->micbias_enable_cb = micbias_enable_cb;
mbhc->rco_clk_rate = rco_clk_rate;
mbhc->mbhc_cb = mbhc_cb;
mbhc->intr_ids = mbhc_cdc_intr_ids;
mbhc->impedance_detect = impedance_det_en;
if (mbhc->intr_ids == NULL) {
pr_err("%s: Interrupt mapping not provided\n", __func__);
return -EINVAL;
}
if (mbhc->headset_jack.jack == NULL) {
ret = snd_soc_jack_new(codec, "Headset Jack", WCD9XXX_JACK_MASK,
&mbhc->headset_jack);
if (ret) {
pr_err("%s: Failed to create new jack\n", __func__);
return ret;
}
ret = snd_soc_jack_new(codec, "Button Jack",
WCD9XXX_JACK_BUTTON_MASK,
&mbhc->button_jack);
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;
}
INIT_DELAYED_WORK(&mbhc->mbhc_firmware_dwork,
wcd9xxx_mbhc_fw_read);
INIT_DELAYED_WORK(&mbhc->mbhc_btn_dwork, wcd9xxx_btn_lpress_fn);
INIT_DELAYED_WORK(&mbhc->mbhc_insert_dwork,
wcd9xxx_mbhc_insert_work);
}
mutex_init(&mbhc->mbhc_lock);
/* Register event notifier */
mbhc->nblock.notifier_call = wcd9xxx_event_notify;
ret = wcd9xxx_resmgr_register_notifier(mbhc->resmgr, &mbhc->nblock);
if (ret) {
pr_err("%s: Failed to register notifier %d\n", __func__, ret);
mutex_destroy(&mbhc->mbhc_lock);
return ret;
}
wcd9xxx_init_debugfs(mbhc);
/* Disable Impedance detection by default for certain codec types */
if (mbhc->mbhc_cb &&
mbhc->mbhc_cb->get_cdc_type() == WCD9XXX_CDC_TYPE_HELICON)
impedance_detect_en = 0;
else
impedance_detect_en = impedance_det_en ? 1 : 0;
core_res = mbhc->resmgr->core_res;
ret = wcd9xxx_request_irq(core_res, mbhc->intr_ids->insertion,
wcd9xxx_hs_insert_irq,
"Headset insert detect", mbhc);
if (ret) {
pr_err("%s: Failed to request irq %d, ret = %d\n", __func__,
mbhc->intr_ids->insertion, ret);
goto err_insert_irq;
}
wcd9xxx_disable_irq(core_res, mbhc->intr_ids->insertion);
ret = wcd9xxx_request_irq(core_res, mbhc->intr_ids->poll_plug_rem,
wcd9xxx_hs_remove_irq,
"Headset remove detect", mbhc);
if (ret) {
pr_err("%s: Failed to request irq %d\n", __func__,
mbhc->intr_ids->poll_plug_rem);
goto err_remove_irq;
}
ret = wcd9xxx_request_irq(core_res, mbhc->intr_ids->dce_est_complete,
wcd9xxx_dce_handler, "DC Estimation detect",
mbhc);
if (ret) {
pr_err("%s: Failed to request irq %d\n", __func__,
mbhc->intr_ids->dce_est_complete);
goto err_potential_irq;
}
ret = wcd9xxx_request_irq(core_res, mbhc->intr_ids->button_release,
wcd9xxx_release_handler,
"Button Release detect", mbhc);
if (ret) {
pr_err("%s: Failed to request irq %d\n", __func__,
mbhc->intr_ids->button_release);
goto err_release_irq;
}
ret = wcd9xxx_request_irq(core_res, mbhc->intr_ids->hph_left_ocp,
wcd9xxx_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;
}
wcd9xxx_disable_irq(core_res, mbhc->intr_ids->hph_left_ocp);
ret = wcd9xxx_request_irq(core_res, mbhc->intr_ids->hph_right_ocp,
wcd9xxx_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;
}
wcd9xxx_disable_irq(core_res, mbhc->intr_ids->hph_right_ocp);
wcd9xxx_regmgr_cond_register(resmgr, 1 << WCD9XXX_COND_HPH_MIC |
1 << WCD9XXX_COND_HPH);
pr_debug("%s: leave ret %d\n", __func__, ret);
return ret;
err_hphr_ocp_irq:
wcd9xxx_free_irq(core_res, mbhc->intr_ids->hph_left_ocp, mbhc);
err_hphl_ocp_irq:
wcd9xxx_free_irq(core_res, mbhc->intr_ids->button_release, mbhc);
err_release_irq:
wcd9xxx_free_irq(core_res, mbhc->intr_ids->dce_est_complete, mbhc);
err_potential_irq:
wcd9xxx_free_irq(core_res, mbhc->intr_ids->poll_plug_rem, mbhc);
err_remove_irq:
wcd9xxx_free_irq(core_res, mbhc->intr_ids->insertion, mbhc);
err_insert_irq:
wcd9xxx_resmgr_unregister_notifier(mbhc->resmgr, &mbhc->nblock);
mutex_destroy(&mbhc->mbhc_lock);
pr_debug("%s: leave ret %d\n", __func__, ret);
return ret;
}
EXPORT_SYMBOL(wcd9xxx_mbhc_init);
void wcd9xxx_mbhc_deinit(struct wcd9xxx_mbhc *mbhc)
{
struct wcd9xxx_core_resource *core_res =
mbhc->resmgr->core_res;
wcd9xxx_regmgr_cond_deregister(mbhc->resmgr, 1 << WCD9XXX_COND_HPH_MIC |
1 << WCD9XXX_COND_HPH);
wcd9xxx_free_irq(core_res, mbhc->intr_ids->button_release, mbhc);
wcd9xxx_free_irq(core_res, mbhc->intr_ids->dce_est_complete, mbhc);
wcd9xxx_free_irq(core_res, mbhc->intr_ids->poll_plug_rem, mbhc);
wcd9xxx_free_irq(core_res, mbhc->intr_ids->insertion, mbhc);
wcd9xxx_free_irq(core_res, mbhc->intr_ids->hs_jack_switch, mbhc);
wcd9xxx_free_irq(core_res, mbhc->intr_ids->hph_left_ocp, mbhc);
wcd9xxx_free_irq(core_res, mbhc->intr_ids->hph_right_ocp, mbhc);
mutex_destroy(&mbhc->mbhc_lock);
wcd9xxx_resmgr_unregister_notifier(mbhc->resmgr, &mbhc->nblock);
wcd9xxx_cleanup_debugfs(mbhc);
}
EXPORT_SYMBOL(wcd9xxx_mbhc_deinit);
MODULE_DESCRIPTION("wcd9xxx MBHC module");
MODULE_LICENSE("GPL v2");