WCD938x has Multi Button Headset Control hardware to support Headset insertion, type detection, 8 headset buttons detection, Over Current detection and Impedence measurements. This patch adds support for this using wcd-mbhc apis.

Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org --- sound/soc/codecs/Kconfig | 1 + sound/soc/codecs/wcd938x.c | 841 ++++++++++++++++++++++++++++++++++++- 2 files changed, 819 insertions(+), 23 deletions(-)

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 6d4c65d6fadd..57437eef1125 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -1563,6 +1563,7 @@ config SND_SOC_WCD938X config SND_SOC_WCD938X_SDW tristate "WCD9380/WCD9385 Codec - SDW" select SND_SOC_WCD938X + select SND_SOC_WCD_MBHC depends on SOUNDWIRE select REGMAP_SOUNDWIRE help diff --git a/sound/soc/codecs/wcd938x.c b/sound/soc/codecs/wcd938x.c index e5795cd964f7..90e072a78ebf 100644 --- a/sound/soc/codecs/wcd938x.c +++ b/sound/soc/codecs/wcd938x.c @@ -21,6 +21,7 @@ #include <linux/regulator/consumer.h>

#include "wcd-clsh-v2.h" +#include "wcd-mbhc-v2.h" #include "wcd938x.h"

#define WCD938X_MAX_MICBIAS (4) @@ -173,6 +174,11 @@ struct wcd938x_priv { struct device *rxdev; struct device_node *rxnode, *txnode; struct regmap *regmap; + struct mutex micb_lock; + /* mbhc module */ + struct wcd_mbhc *wcd_mbhc; + struct wcd_mbhc_config mbhc_cfg; + struct wcd_mbhc_intr intr_ids; struct wcd_clsh_ctrl *clsh_info; struct irq_domain *virq; struct regmap_irq_chip *wcd_regmap_irq_chip; @@ -201,24 +207,70 @@ struct wcd938x_priv { bool bcs_dis; };

-enum { - MIC_BIAS_1 = 1, - MIC_BIAS_2, - MIC_BIAS_3, - MIC_BIAS_4 -}; - -enum { - MICB_PULLUP_ENABLE, - MICB_PULLUP_DISABLE, - MICB_ENABLE, - MICB_DISABLE, -}; - static const SNDRV_CTL_TLVD_DECLARE_DB_MINMAX(ear_pa_gain, 600, -1800); static const SNDRV_CTL_TLVD_DECLARE_DB_MINMAX(line_gain, 600, -3000); static const SNDRV_CTL_TLVD_DECLARE_DB_MINMAX(analog_gain, 0, 3000);

+struct wcd938x_mbhc_zdet_param { + u16 ldo_ctl; + u16 noff; + u16 nshift; + u16 btn5; + u16 btn6; + u16 btn7; +}; + +static struct wcd_mbhc_field wcd_mbhc_fields[WCD_MBHC_REG_FUNC_MAX] = { + WCD_MBHC_FIELD(WCD_MBHC_L_DET_EN, WCD938X_ANA_MBHC_MECH, 0x80), + WCD_MBHC_FIELD(WCD_MBHC_GND_DET_EN, WCD938X_ANA_MBHC_MECH, 0x40), + WCD_MBHC_FIELD(WCD_MBHC_MECH_DETECTION_TYPE, WCD938X_ANA_MBHC_MECH, 0x20), + WCD_MBHC_FIELD(WCD_MBHC_MIC_CLAMP_CTL, WCD938X_MBHC_NEW_PLUG_DETECT_CTL, 0x30), + WCD_MBHC_FIELD(WCD_MBHC_ELECT_DETECTION_TYPE, WCD938X_ANA_MBHC_ELECT, 0x08), + WCD_MBHC_FIELD(WCD_MBHC_HS_L_DET_PULL_UP_CTRL, WCD938X_MBHC_NEW_INT_MECH_DET_CURRENT, 0x1F), + WCD_MBHC_FIELD(WCD_MBHC_HS_L_DET_PULL_UP_COMP_CTRL, WCD938X_ANA_MBHC_MECH, 0x04), + WCD_MBHC_FIELD(WCD_MBHC_HPHL_PLUG_TYPE, WCD938X_ANA_MBHC_MECH, 0x10), + WCD_MBHC_FIELD(WCD_MBHC_GND_PLUG_TYPE, WCD938X_ANA_MBHC_MECH, 0x08), + WCD_MBHC_FIELD(WCD_MBHC_SW_HPH_LP_100K_TO_GND, WCD938X_ANA_MBHC_MECH, 0x01), + WCD_MBHC_FIELD(WCD_MBHC_ELECT_SCHMT_ISRC, WCD938X_ANA_MBHC_ELECT, 0x06), + WCD_MBHC_FIELD(WCD_MBHC_FSM_EN, WCD938X_ANA_MBHC_ELECT, 0x80), + WCD_MBHC_FIELD(WCD_MBHC_INSREM_DBNC, WCD938X_MBHC_NEW_PLUG_DETECT_CTL, 0x0F), + WCD_MBHC_FIELD(WCD_MBHC_BTN_DBNC, WCD938X_MBHC_NEW_CTL_1, 0x03), + WCD_MBHC_FIELD(WCD_MBHC_HS_VREF, WCD938X_MBHC_NEW_CTL_2, 0x03), + WCD_MBHC_FIELD(WCD_MBHC_HS_COMP_RESULT, WCD938X_ANA_MBHC_RESULT_3, 0x08), + WCD_MBHC_FIELD(WCD_MBHC_IN2P_CLAMP_STATE, WCD938X_ANA_MBHC_RESULT_3, 0x10), + WCD_MBHC_FIELD(WCD_MBHC_MIC_SCHMT_RESULT, WCD938X_ANA_MBHC_RESULT_3, 0x20), + WCD_MBHC_FIELD(WCD_MBHC_HPHL_SCHMT_RESULT, WCD938X_ANA_MBHC_RESULT_3, 0x80), + WCD_MBHC_FIELD(WCD_MBHC_HPHR_SCHMT_RESULT, WCD938X_ANA_MBHC_RESULT_3, 0x40), + WCD_MBHC_FIELD(WCD_MBHC_OCP_FSM_EN, WCD938X_HPH_OCP_CTL, 0x10), + WCD_MBHC_FIELD(WCD_MBHC_BTN_RESULT, WCD938X_ANA_MBHC_RESULT_3, 0x07), + WCD_MBHC_FIELD(WCD_MBHC_BTN_ISRC_CTL, WCD938X_ANA_MBHC_ELECT, 0x70), + WCD_MBHC_FIELD(WCD_MBHC_ELECT_RESULT, WCD938X_ANA_MBHC_RESULT_3, 0xFF), + WCD_MBHC_FIELD(WCD_MBHC_MICB_CTRL, WCD938X_ANA_MICB2, 0xC0), + WCD_MBHC_FIELD(WCD_MBHC_HPH_CNP_WG_TIME, WCD938X_HPH_CNP_WG_TIME, 0xFF), + WCD_MBHC_FIELD(WCD_MBHC_HPHR_PA_EN, WCD938X_ANA_HPH, 0x40), + WCD_MBHC_FIELD(WCD_MBHC_HPHL_PA_EN, WCD938X_ANA_HPH, 0x80), + WCD_MBHC_FIELD(WCD_MBHC_HPH_PA_EN, WCD938X_ANA_HPH, 0xC0), + WCD_MBHC_FIELD(WCD_MBHC_SWCH_LEVEL_REMOVE, WCD938X_ANA_MBHC_RESULT_3, 0x10), + WCD_MBHC_FIELD(WCD_MBHC_ANC_DET_EN, WCD938X_MBHC_CTL_BCS, 0x02), + WCD_MBHC_FIELD(WCD_MBHC_FSM_STATUS, WCD938X_MBHC_NEW_FSM_STATUS, 0x01), + WCD_MBHC_FIELD(WCD_MBHC_MUX_CTL, WCD938X_MBHC_NEW_CTL_2, 0x70), + WCD_MBHC_FIELD(WCD_MBHC_MOISTURE_STATUS, WCD938X_MBHC_NEW_FSM_STATUS, 0x20), + WCD_MBHC_FIELD(WCD_MBHC_HPHR_GND, WCD938X_HPH_PA_CTL2, 0x40), + WCD_MBHC_FIELD(WCD_MBHC_HPHL_GND, WCD938X_HPH_PA_CTL2, 0x10), + WCD_MBHC_FIELD(WCD_MBHC_HPHL_OCP_DET_EN, WCD938X_HPH_L_TEST, 0x01), + WCD_MBHC_FIELD(WCD_MBHC_HPHR_OCP_DET_EN, WCD938X_HPH_R_TEST, 0x01), + WCD_MBHC_FIELD(WCD_MBHC_HPHL_OCP_STATUS, WCD938X_DIGITAL_INTR_STATUS_0, 0x80), + WCD_MBHC_FIELD(WCD_MBHC_HPHR_OCP_STATUS, WCD938X_DIGITAL_INTR_STATUS_0, 0x20), + WCD_MBHC_FIELD(WCD_MBHC_ADC_EN, WCD938X_MBHC_NEW_CTL_1, 0x08), + WCD_MBHC_FIELD(WCD_MBHC_ADC_COMPLETE, WCD938X_MBHC_NEW_FSM_STATUS, 0x40), + WCD_MBHC_FIELD(WCD_MBHC_ADC_TIMEOUT, WCD938X_MBHC_NEW_FSM_STATUS, 0x80), + WCD_MBHC_FIELD(WCD_MBHC_ADC_RESULT, WCD938X_MBHC_NEW_ADC_RESULT, 0xFF), + WCD_MBHC_FIELD(WCD_MBHC_MICB2_VOUT, WCD938X_ANA_MICB2, 0x3F), + WCD_MBHC_FIELD(WCD_MBHC_ADC_MODE, WCD938X_MBHC_NEW_CTL_1, 0x10), + WCD_MBHC_FIELD(WCD_MBHC_DETECTION_DONE, WCD938X_MBHC_NEW_CTL_1, 0x04), + WCD_MBHC_FIELD(WCD_MBHC_ELECT_ISRC_EN, WCD938X_ANA_MBHC_ZDET, 0x02), +}; + static const struct reg_default wcd938x_defaults[] = { {WCD938X_ANA_PAGE_REGISTER, 0x00}, {WCD938X_ANA_BIAS, 0x00}, @@ -1725,6 +1777,8 @@ static int wcd938x_codec_enable_hphr_pa(struct snd_soc_dapm_widget *w, usleep_range(7000, 7100); snd_soc_component_write_field(component, WCD938X_ANA_HPH, WCD938X_HPHR_EN_MASK, 0); + wcd_mbhc_event_notify(wcd938x->wcd_mbhc, + WCD_EVENT_PRE_HPHR_PA_OFF); set_bit(HPH_PA_DELAY, &wcd938x->status_mask); break; case SND_SOC_DAPM_POST_PMD: @@ -1740,6 +1794,8 @@ static int wcd938x_codec_enable_hphr_pa(struct snd_soc_dapm_widget *w, usleep_range(7000, 7100); clear_bit(HPH_PA_DELAY, &wcd938x->status_mask); } + wcd_mbhc_event_notify(wcd938x->wcd_mbhc, + WCD_EVENT_POST_HPHR_PA_OFF); snd_soc_component_write_field(component, WCD938X_ANA_HPH, WCD938X_HPHR_REF_EN_MASK, 0); snd_soc_component_write_field(component, WCD938X_DIGITAL_PDM_WD_CTL1, @@ -1827,6 +1883,7 @@ static int wcd938x_codec_enable_hphl_pa(struct snd_soc_dapm_widget *w, usleep_range(7000, 7100); snd_soc_component_write_field(component, WCD938X_ANA_HPH, WCD938X_HPHL_EN_MASK, 0); + wcd_mbhc_event_notify(wcd938x->wcd_mbhc, WCD_EVENT_PRE_HPHL_PA_OFF); set_bit(HPH_PA_DELAY, &wcd938x->status_mask); break; case SND_SOC_DAPM_POST_PMD: @@ -1842,6 +1899,8 @@ static int wcd938x_codec_enable_hphl_pa(struct snd_soc_dapm_widget *w, usleep_range(7000, 7100); clear_bit(HPH_PA_DELAY, &wcd938x->status_mask); } + wcd_mbhc_event_notify(wcd938x->wcd_mbhc, + WCD_EVENT_POST_HPHL_PA_OFF); snd_soc_component_write_field(component, WCD938X_ANA_HPH, WCD938X_HPHL_REF_EN_MASK, 0); snd_soc_component_write_field(component, WCD938X_DIGITAL_PDM_WD_CTL0, @@ -2352,7 +2411,14 @@ static int wcd938x_micbias_control(struct snd_soc_component *component, snd_soc_component_write_field(component, micb_reg, WCD938X_MICB_EN_MASK, WCD938X_MICB_ENABLE); + if (micb_num == MIC_BIAS_2) + wcd_mbhc_event_notify(wcd938x->wcd_mbhc, + WCD_EVENT_POST_MICBIAS_2_ON); } + if (micb_num == MIC_BIAS_2 && is_dapm) + wcd_mbhc_event_notify(wcd938x->wcd_mbhc, + WCD_EVENT_POST_DAPM_MICBIAS_2_ON); +

break; case MICB_DISABLE: @@ -2366,10 +2432,19 @@ static int wcd938x_micbias_control(struct snd_soc_component *component, WCD938X_MICB_PULL_UP); else if ((wcd938x->micb_ref[micb_index] == 0) && (wcd938x->pullup_ref[micb_index] == 0)) { + if (micb_num == MIC_BIAS_2) + wcd_mbhc_event_notify(wcd938x->wcd_mbhc, + WCD_EVENT_PRE_MICBIAS_2_OFF);

snd_soc_component_write_field(component, micb_reg, WCD938X_MICB_EN_MASK, 0); + if (micb_num == MIC_BIAS_2) + wcd_mbhc_event_notify(wcd938x->wcd_mbhc, + WCD_EVENT_POST_MICBIAS_2_OFF); } + if (is_dapm && micb_num == MIC_BIAS_2) + wcd_mbhc_event_notify(wcd938x->wcd_mbhc, + WCD_EVENT_POST_DAPM_MICBIAS_2_OFF); break; }

@@ -2842,6 +2917,704 @@ static int wcd938x_set_swr_port(struct snd_kcontrol *kcontrol,

}

+/* MBHC related */ +static void wcd938x_mbhc_clk_setup(struct snd_soc_component *component, + bool enable) +{ + snd_soc_component_write_field(component, WCD938X_MBHC_NEW_CTL_1, + WCD938X_MBHC_CTL_RCO_EN_MASK, enable); +} + +static void wcd938x_mbhc_mbhc_bias_control(struct snd_soc_component *component, + bool enable) +{ + snd_soc_component_write_field(component, WCD938X_ANA_MBHC_ELECT, + WCD938X_ANA_MBHC_BIAS_EN, enable); +} + +static void wcd938x_mbhc_program_btn_thr(struct snd_soc_component *component, + int *btn_low, int *btn_high, + int num_btn, bool is_micbias) +{ + int i, vth; + + if (num_btn > WCD_MBHC_DEF_BUTTONS) { + dev_err(component->dev, "%s: invalid number of buttons: %d\n", + __func__, num_btn); + return; + } + + for (i = 0; i < num_btn; i++) { + vth = ((btn_high[i] * 2) / 25) & 0x3F; + snd_soc_component_write_field(component, WCD938X_ANA_MBHC_BTN0 + i, + WCD938X_MBHC_BTN_VTH_MASK, vth); + dev_dbg(component->dev, "%s: btn_high[%d]: %d, vth: %d\n", + __func__, i, btn_high[i], vth); + } +} + +static bool wcd938x_mbhc_micb_en_status(struct snd_soc_component *component, int micb_num) +{ + u8 val; + + if (micb_num == MIC_BIAS_2) { + val = snd_soc_component_read_field(component, + WCD938X_ANA_MICB2, + WCD938X_ANA_MICB2_ENABLE_MASK); + if (val == WCD938X_MICB_ENABLE) + return true; + } + return false; +} + +static void wcd938x_mbhc_hph_l_pull_up_control(struct snd_soc_component *component, + int pull_up_cur) +{ + /* Default pull up current to 2uA */ + if (pull_up_cur > HS_PULLUP_I_OFF || pull_up_cur < HS_PULLUP_I_3P0_UA) + pull_up_cur = HS_PULLUP_I_2P0_UA; + + snd_soc_component_write_field(component, + WCD938X_MBHC_NEW_INT_MECH_DET_CURRENT, + WCD938X_HSDET_PULLUP_C_MASK, pull_up_cur); +} + +static int wcd938x_mbhc_request_micbias(struct snd_soc_component *component, + int micb_num, int req) +{ + return wcd938x_micbias_control(component, micb_num, req, false); +} + +static void wcd938x_mbhc_micb_ramp_control(struct snd_soc_component *component, + bool enable) +{ + if (enable) { + snd_soc_component_write_field(component, WCD938X_ANA_MICB2_RAMP, + WCD938X_RAMP_SHIFT_CTRL_MASK, 0x0C); + snd_soc_component_write_field(component, WCD938X_ANA_MICB2_RAMP, + WCD938X_RAMP_EN_MASK, 1); + } else { + snd_soc_component_write_field(component, WCD938X_ANA_MICB2_RAMP, + WCD938X_RAMP_EN_MASK, 0); + snd_soc_component_write_field(component, WCD938X_ANA_MICB2_RAMP, + WCD938X_RAMP_SHIFT_CTRL_MASK, 0); + } +} + +static int wcd938x_get_micb_vout_ctl_val(u32 micb_mv) +{ + /* min micbias voltage is 1V and maximum is 2.85V */ + if (micb_mv < 1000 || micb_mv > 2850) + return -EINVAL; + + return (micb_mv - 1000) / 50; +} + +static int wcd938x_mbhc_micb_adjust_voltage(struct snd_soc_component *component, + int req_volt, int micb_num) +{ + struct wcd938x_priv *wcd938x = snd_soc_component_get_drvdata(component); + int cur_vout_ctl, req_vout_ctl, micb_reg, micb_en, ret = 0; + + switch (micb_num) { + case MIC_BIAS_1: + micb_reg = WCD938X_ANA_MICB1; + break; + case MIC_BIAS_2: + micb_reg = WCD938X_ANA_MICB2; + break; + case MIC_BIAS_3: + micb_reg = WCD938X_ANA_MICB3; + break; + case MIC_BIAS_4: + micb_reg = WCD938X_ANA_MICB4; + break; + default: + return -EINVAL; + } + mutex_lock(&wcd938x->micb_lock); + /* + * If requested micbias voltage is same as current micbias + * voltage, then just return. Otherwise, adjust voltage as + * per requested value. If micbias is already enabled, then + * to avoid slow micbias ramp-up or down enable pull-up + * momentarily, change the micbias value and then re-enable + * micbias. + */ + micb_en = snd_soc_component_read_field(component, micb_reg, + WCD938X_MICB_EN_MASK); + cur_vout_ctl = snd_soc_component_read_field(component, micb_reg, + WCD938X_MICB_VOUT_MASK); + + req_vout_ctl = wcd938x_get_micb_vout_ctl_val(req_volt); + if (req_vout_ctl < 0) { + ret = -EINVAL; + goto exit; + } + + if (cur_vout_ctl == req_vout_ctl) { + ret = 0; + goto exit; + } + + if (micb_en == WCD938X_MICB_ENABLE) + snd_soc_component_write_field(component, micb_reg, + WCD938X_MICB_EN_MASK, + WCD938X_MICB_PULL_UP); + + snd_soc_component_write_field(component, micb_reg, + WCD938X_MICB_VOUT_MASK, + req_vout_ctl); + + if (micb_en == WCD938X_MICB_ENABLE) { + snd_soc_component_write_field(component, micb_reg, + WCD938X_MICB_EN_MASK, + WCD938X_MICB_ENABLE); + /* + * Add 2ms delay as per HW requirement after enabling + * micbias + */ + usleep_range(2000, 2100); + } +exit: + mutex_unlock(&wcd938x->micb_lock); + return ret; +} + +static int wcd938x_mbhc_micb_ctrl_threshold_mic(struct snd_soc_component *component, + int micb_num, bool req_en) +{ + struct wcd938x_priv *wcd938x = snd_soc_component_get_drvdata(component); + int rc, micb_mv; + + if (micb_num != MIC_BIAS_2) + return -EINVAL; + /* + * If device tree micbias level is already above the minimum + * voltage needed to detect threshold microphone, then do + * not change the micbias, just return. + */ + if (wcd938x->micb2_mv >= WCD_MBHC_THR_HS_MICB_MV) + return 0; + + micb_mv = req_en ? WCD_MBHC_THR_HS_MICB_MV : wcd938x->micb2_mv; + + rc = wcd938x_mbhc_micb_adjust_voltage(component, micb_mv, MIC_BIAS_2); + + return rc; +} + +static inline void wcd938x_mbhc_get_result_params(struct wcd938x_priv *wcd938x, + s16 *d1_a, u16 noff, + int32_t *zdet) +{ + int i; + int val, val1; + s16 c1; + s32 x1, d1; + int32_t denom; + int minCode_param[] = { + 3277, 1639, 820, 410, 205, 103, 52, 26 + }; + + regmap_update_bits(wcd938x->regmap, WCD938X_ANA_MBHC_ZDET, 0x20, 0x20); + for (i = 0; i < WCD938X_ZDET_NUM_MEASUREMENTS; i++) { + regmap_read(wcd938x->regmap, WCD938X_ANA_MBHC_RESULT_2, &val); + if (val & 0x80) + break; + } + val = val << 0x8; + regmap_read(wcd938x->regmap, WCD938X_ANA_MBHC_RESULT_1, &val1); + val |= val1; + regmap_update_bits(wcd938x->regmap, WCD938X_ANA_MBHC_ZDET, 0x20, 0x00); + x1 = WCD938X_MBHC_GET_X1(val); + c1 = WCD938X_MBHC_GET_C1(val); + /* If ramp is not complete, give additional 5ms */ + if ((c1 < 2) && x1) + usleep_range(5000, 5050); + + if (!c1 || !x1) { + pr_err("%s: Impedance detect ramp error, c1=%d, x1=0x%x\n", + __func__, c1, x1); + goto ramp_down; + } + d1 = d1_a[c1]; + denom = (x1 * d1) - (1 << (14 - noff)); + if (denom > 0) + *zdet = (WCD938X_MBHC_ZDET_CONST * 1000) / denom; + else if (x1 < minCode_param[noff]) + *zdet = WCD938X_ZDET_FLOATING_IMPEDANCE; + + pr_err("%s: d1=%d, c1=%d, x1=0x%x, z_val=%d(milliOhm)\n", + __func__, d1, c1, x1, *zdet); +ramp_down: + i = 0; + while (x1) { + regmap_read(wcd938x->regmap, + WCD938X_ANA_MBHC_RESULT_1, &val); + regmap_read(wcd938x->regmap, + WCD938X_ANA_MBHC_RESULT_2, &val1); + val = val << 0x08; + val |= val1; + x1 = WCD938X_MBHC_GET_X1(val); + i++; + if (i == WCD938X_ZDET_NUM_MEASUREMENTS) + break; + } +} + +static void wcd938x_mbhc_zdet_ramp(struct snd_soc_component *component, + struct wcd938x_mbhc_zdet_param *zdet_param, + int32_t *zl, int32_t *zr, s16 *d1_a) +{ + struct wcd938x_priv *wcd938x = snd_soc_component_get_drvdata(component); + int32_t zdet = 0; + + snd_soc_component_write_field(component, WCD938X_MBHC_NEW_ZDET_ANA_CTL, + WCD938X_ZDET_MAXV_CTL_MASK, zdet_param->ldo_ctl); + snd_soc_component_update_bits(component, WCD938X_ANA_MBHC_BTN5, + WCD938X_VTH_MASK, zdet_param->btn5); + snd_soc_component_update_bits(component, WCD938X_ANA_MBHC_BTN6, + WCD938X_VTH_MASK, zdet_param->btn6); + snd_soc_component_update_bits(component, WCD938X_ANA_MBHC_BTN7, + WCD938X_VTH_MASK, zdet_param->btn7); + snd_soc_component_write_field(component, WCD938X_MBHC_NEW_ZDET_ANA_CTL, + WCD938X_ZDET_RANGE_CTL_MASK, zdet_param->noff); + snd_soc_component_update_bits(component, WCD938X_MBHC_NEW_ZDET_RAMP_CTL, + 0x0F, zdet_param->nshift); + + if (!zl) + goto z_right; + /* Start impedance measurement for HPH_L */ + regmap_update_bits(wcd938x->regmap, + WCD938X_ANA_MBHC_ZDET, 0x80, 0x80); + dev_dbg(component->dev, "%s: ramp for HPH_L, noff = %d\n", + __func__, zdet_param->noff); + wcd938x_mbhc_get_result_params(wcd938x, d1_a, zdet_param->noff, &zdet); + regmap_update_bits(wcd938x->regmap, + WCD938X_ANA_MBHC_ZDET, 0x80, 0x00); + + *zl = zdet; + +z_right: + if (!zr) + return; + /* Start impedance measurement for HPH_R */ + regmap_update_bits(wcd938x->regmap, + WCD938X_ANA_MBHC_ZDET, 0x40, 0x40); + dev_dbg(component->dev, "%s: ramp for HPH_R, noff = %d\n", + __func__, zdet_param->noff); + wcd938x_mbhc_get_result_params(wcd938x, d1_a, zdet_param->noff, &zdet); + regmap_update_bits(wcd938x->regmap, + WCD938X_ANA_MBHC_ZDET, 0x40, 0x00); + + *zr = zdet; +} + +static inline void wcd938x_wcd_mbhc_qfuse_cal(struct snd_soc_component *component, + int32_t *z_val, int flag_l_r) +{ + s16 q1; + int q1_cal; + + if (*z_val < (WCD938X_ZDET_VAL_400/1000)) + q1 = snd_soc_component_read(component, + WCD938X_DIGITAL_EFUSE_REG_23 + (2 * flag_l_r)); + else + q1 = snd_soc_component_read(component, + WCD938X_DIGITAL_EFUSE_REG_24 + (2 * flag_l_r)); + if (q1 & 0x80) + q1_cal = (10000 - ((q1 & 0x7F) * 25)); + else + q1_cal = (10000 + (q1 * 25)); + if (q1_cal > 0) + *z_val = ((*z_val) * 10000) / q1_cal; +} + +static void wcd938x_wcd_mbhc_calc_impedance(struct snd_soc_component *component, + uint32_t *zl, uint32_t *zr) +{ + struct wcd938x_priv *wcd938x = snd_soc_component_get_drvdata(component); + s16 reg0, reg1, reg2, reg3, reg4; + int32_t z1L, z1R, z1Ls; + int zMono, z_diff1, z_diff2; + bool is_fsm_disable = false; + struct wcd938x_mbhc_zdet_param zdet_param[] = { + {4, 0, 4, 0x08, 0x14, 0x18}, /* < 32ohm */ + {2, 0, 3, 0x18, 0x7C, 0x90}, /* 32ohm < Z < 400ohm */ + {1, 4, 5, 0x18, 0x7C, 0x90}, /* 400ohm < Z < 1200ohm */ + {1, 6, 7, 0x18, 0x7C, 0x90}, /* >1200ohm */ + }; + struct wcd938x_mbhc_zdet_param *zdet_param_ptr = NULL; + s16 d1_a[][4] = { + {0, 30, 90, 30}, + {0, 30, 30, 5}, + {0, 30, 30, 5}, + {0, 30, 30, 5}, + }; + s16 *d1 = NULL; + + reg0 = snd_soc_component_read(component, WCD938X_ANA_MBHC_BTN5); + reg1 = snd_soc_component_read(component, WCD938X_ANA_MBHC_BTN6); + reg2 = snd_soc_component_read(component, WCD938X_ANA_MBHC_BTN7); + reg3 = snd_soc_component_read(component, WCD938X_MBHC_CTL_CLK); + reg4 = snd_soc_component_read(component, WCD938X_MBHC_NEW_ZDET_ANA_CTL); + + if (snd_soc_component_read(component, WCD938X_ANA_MBHC_ELECT) & 0x80) { + is_fsm_disable = true; + regmap_update_bits(wcd938x->regmap, + WCD938X_ANA_MBHC_ELECT, 0x80, 0x00); + } + + /* For NO-jack, disable L_DET_EN before Z-det measurements */ + if (wcd938x->mbhc_cfg.hphl_swh) + regmap_update_bits(wcd938x->regmap, + WCD938X_ANA_MBHC_MECH, 0x80, 0x00); + + /* Turn off 100k pull down on HPHL */ + regmap_update_bits(wcd938x->regmap, + WCD938X_ANA_MBHC_MECH, 0x01, 0x00); + + /* Disable surge protection before impedance detection. + * This is done to give correct value for high impedance. + */ + regmap_update_bits(wcd938x->regmap, + WCD938X_HPH_SURGE_HPHLR_SURGE_EN, 0xC0, 0x00); + /* 1ms delay needed after disable surge protection */ + usleep_range(1000, 1010); + + /* First get impedance on Left */ + d1 = d1_a[1]; + zdet_param_ptr = &zdet_param[1]; + wcd938x_mbhc_zdet_ramp(component, zdet_param_ptr, &z1L, NULL, d1); + + if (!WCD938X_MBHC_IS_SECOND_RAMP_REQUIRED(z1L)) + goto left_ch_impedance; + + /* Second ramp for left ch */ + if (z1L < WCD938X_ZDET_VAL_32) { + zdet_param_ptr = &zdet_param[0]; + d1 = d1_a[0]; + } else if ((z1L > WCD938X_ZDET_VAL_400) && + (z1L <= WCD938X_ZDET_VAL_1200)) { + zdet_param_ptr = &zdet_param[2]; + d1 = d1_a[2]; + } else if (z1L > WCD938X_ZDET_VAL_1200) { + zdet_param_ptr = &zdet_param[3]; + d1 = d1_a[3]; + } + wcd938x_mbhc_zdet_ramp(component, zdet_param_ptr, &z1L, NULL, d1); + +left_ch_impedance: + if ((z1L == WCD938X_ZDET_FLOATING_IMPEDANCE) || + (z1L > WCD938X_ZDET_VAL_100K)) { + *zl = WCD938X_ZDET_FLOATING_IMPEDANCE; + zdet_param_ptr = &zdet_param[1]; + d1 = d1_a[1]; + } else { + *zl = z1L/1000; + wcd938x_wcd_mbhc_qfuse_cal(component, zl, 0); + } + dev_dbg(component->dev, "%s: impedance on HPH_L = %d(ohms)\n", + __func__, *zl); + + /* Start of right impedance ramp and calculation */ + wcd938x_mbhc_zdet_ramp(component, zdet_param_ptr, NULL, &z1R, d1); + if (WCD938X_MBHC_IS_SECOND_RAMP_REQUIRED(z1R)) { + if (((z1R > WCD938X_ZDET_VAL_1200) && + (zdet_param_ptr->noff == 0x6)) || + ((*zl) != WCD938X_ZDET_FLOATING_IMPEDANCE)) + goto right_ch_impedance; + /* Second ramp for right ch */ + if (z1R < WCD938X_ZDET_VAL_32) { + zdet_param_ptr = &zdet_param[0]; + d1 = d1_a[0]; + } else if ((z1R > WCD938X_ZDET_VAL_400) && + (z1R <= WCD938X_ZDET_VAL_1200)) { + zdet_param_ptr = &zdet_param[2]; + d1 = d1_a[2]; + } else if (z1R > WCD938X_ZDET_VAL_1200) { + zdet_param_ptr = &zdet_param[3]; + d1 = d1_a[3]; + } + wcd938x_mbhc_zdet_ramp(component, zdet_param_ptr, NULL, &z1R, d1); + } +right_ch_impedance: + if ((z1R == WCD938X_ZDET_FLOATING_IMPEDANCE) || + (z1R > WCD938X_ZDET_VAL_100K)) { + *zr = WCD938X_ZDET_FLOATING_IMPEDANCE; + } else { + *zr = z1R/1000; + wcd938x_wcd_mbhc_qfuse_cal(component, zr, 1); + } + dev_dbg(component->dev, "%s: impedance on HPH_R = %d(ohms)\n", + __func__, *zr); + + /* Mono/stereo detection */ + if ((*zl == WCD938X_ZDET_FLOATING_IMPEDANCE) && + (*zr == WCD938X_ZDET_FLOATING_IMPEDANCE)) { + dev_dbg(component->dev, + "%s: plug type is invalid or extension cable\n", + __func__); + goto zdet_complete; + } + if ((*zl == WCD938X_ZDET_FLOATING_IMPEDANCE) || + (*zr == WCD938X_ZDET_FLOATING_IMPEDANCE) || + ((*zl < WCD_MONO_HS_MIN_THR) && (*zr > WCD_MONO_HS_MIN_THR)) || + ((*zl > WCD_MONO_HS_MIN_THR) && (*zr < WCD_MONO_HS_MIN_THR))) { + dev_dbg(component->dev, + "%s: Mono plug type with one ch floating or shorted to GND\n", + __func__); + wcd_mbhc_set_hph_type(wcd938x->wcd_mbhc, WCD_MBHC_HPH_MONO); + goto zdet_complete; + } + snd_soc_component_write_field(component, WCD938X_HPH_R_ATEST, + WCD938X_HPHPA_GND_OVR_MASK, 1); + snd_soc_component_write_field(component, WCD938X_HPH_PA_CTL2, + WCD938X_HPHPA_GND_R_MASK, 1); + if (*zl < (WCD938X_ZDET_VAL_32/1000)) + wcd938x_mbhc_zdet_ramp(component, &zdet_param[0], &z1Ls, NULL, d1); + else + wcd938x_mbhc_zdet_ramp(component, &zdet_param[1], &z1Ls, NULL, d1); + snd_soc_component_write_field(component, WCD938X_HPH_PA_CTL2, + WCD938X_HPHPA_GND_R_MASK, 0); + snd_soc_component_write_field(component, WCD938X_HPH_R_ATEST, + WCD938X_HPHPA_GND_OVR_MASK, 0); + z1Ls /= 1000; + wcd938x_wcd_mbhc_qfuse_cal(component, &z1Ls, 0); + /* Parallel of left Z and 9 ohm pull down resistor */ + zMono = ((*zl) * 9) / ((*zl) + 9); + z_diff1 = (z1Ls > zMono) ? (z1Ls - zMono) : (zMono - z1Ls); + z_diff2 = ((*zl) > z1Ls) ? ((*zl) - z1Ls) : (z1Ls - (*zl)); + if ((z_diff1 * (*zl + z1Ls)) > (z_diff2 * (z1Ls + zMono))) { + dev_dbg(component->dev, "%s: stereo plug type detected\n", + __func__); + wcd_mbhc_set_hph_type(wcd938x->wcd_mbhc, WCD_MBHC_HPH_STEREO); + } else { + dev_dbg(component->dev, "%s: MONO plug type detected\n", + __func__); + wcd_mbhc_set_hph_type(wcd938x->wcd_mbhc, WCD_MBHC_HPH_MONO); + } + + /* Enable surge protection again after impedance detection */ + regmap_update_bits(wcd938x->regmap, + WCD938X_HPH_SURGE_HPHLR_SURGE_EN, 0xC0, 0xC0); +zdet_complete: + snd_soc_component_write(component, WCD938X_ANA_MBHC_BTN5, reg0); + snd_soc_component_write(component, WCD938X_ANA_MBHC_BTN6, reg1); + snd_soc_component_write(component, WCD938X_ANA_MBHC_BTN7, reg2); + /* Turn on 100k pull down on HPHL */ + regmap_update_bits(wcd938x->regmap, + WCD938X_ANA_MBHC_MECH, 0x01, 0x01); + + /* For NO-jack, re-enable L_DET_EN after Z-det measurements */ + if (wcd938x->mbhc_cfg.hphl_swh) + regmap_update_bits(wcd938x->regmap, + WCD938X_ANA_MBHC_MECH, 0x80, 0x80); + + snd_soc_component_write(component, WCD938X_MBHC_NEW_ZDET_ANA_CTL, reg4); + snd_soc_component_write(component, WCD938X_MBHC_CTL_CLK, reg3); + if (is_fsm_disable) + regmap_update_bits(wcd938x->regmap, + WCD938X_ANA_MBHC_ELECT, 0x80, 0x80); +} + +static void wcd938x_mbhc_gnd_det_ctrl(struct snd_soc_component *component, + bool enable) +{ + if (enable) { + snd_soc_component_write_field(component, WCD938X_ANA_MBHC_MECH, + WCD938X_MBHC_HSG_PULLUP_COMP_EN, 1); + snd_soc_component_write_field(component, WCD938X_ANA_MBHC_MECH, + WCD938X_MBHC_GND_DET_EN_MASK, 1); + } else { + snd_soc_component_write_field(component, WCD938X_ANA_MBHC_MECH, + WCD938X_MBHC_GND_DET_EN_MASK, 0); + snd_soc_component_write_field(component, WCD938X_ANA_MBHC_MECH, + WCD938X_MBHC_HSG_PULLUP_COMP_EN, 0); + } +} + +static void wcd938x_mbhc_hph_pull_down_ctrl(struct snd_soc_component *component, + bool enable) +{ + snd_soc_component_write_field(component, WCD938X_HPH_PA_CTL2, + WCD938X_HPHPA_GND_R_MASK, enable); + snd_soc_component_write_field(component, WCD938X_HPH_PA_CTL2, + WCD938X_HPHPA_GND_L_MASK, enable); +} + +static void wcd938x_mbhc_moisture_config(struct snd_soc_component *component) +{ + struct wcd938x_priv *wcd938x = snd_soc_component_get_drvdata(component); + + if (wcd938x->mbhc_cfg.moist_rref == R_OFF) { + snd_soc_component_write_field(component, WCD938X_MBHC_NEW_CTL_2, + WCD938X_M_RTH_CTL_MASK, R_OFF); + return; + } + + /* Do not enable moisture detection if jack type is NC */ + if (!wcd938x->mbhc_cfg.hphl_swh) { + dev_dbg(component->dev, "%s: disable moisture detection for NC\n", + __func__); + snd_soc_component_write_field(component, WCD938X_MBHC_NEW_CTL_2, + WCD938X_M_RTH_CTL_MASK, R_OFF); + return; + } + + snd_soc_component_write_field(component, WCD938X_MBHC_NEW_CTL_2, + WCD938X_M_RTH_CTL_MASK, wcd938x->mbhc_cfg.moist_rref); +} + +static void wcd938x_mbhc_moisture_detect_en(struct snd_soc_component *component, bool enable) +{ + struct wcd938x_priv *wcd938x = snd_soc_component_get_drvdata(component); + + if (enable) + snd_soc_component_write_field(component, WCD938X_MBHC_NEW_CTL_2, + WCD938X_M_RTH_CTL_MASK, wcd938x->mbhc_cfg.moist_rref); + else + snd_soc_component_write_field(component, WCD938X_MBHC_NEW_CTL_2, + WCD938X_M_RTH_CTL_MASK, R_OFF); +} + +static bool wcd938x_mbhc_get_moisture_status(struct snd_soc_component *component) +{ + struct wcd938x_priv *wcd938x = snd_soc_component_get_drvdata(component); + bool ret = false; + + if (wcd938x->mbhc_cfg.moist_rref == R_OFF) { + snd_soc_component_write_field(component, WCD938X_MBHC_NEW_CTL_2, + WCD938X_M_RTH_CTL_MASK, R_OFF); + goto done; + } + + /* Do not enable moisture detection if jack type is NC */ + if (!wcd938x->mbhc_cfg.hphl_swh) { + dev_dbg(component->dev, "%s: disable moisture detection for NC\n", + __func__); + snd_soc_component_write_field(component, WCD938X_MBHC_NEW_CTL_2, + WCD938X_M_RTH_CTL_MASK, R_OFF); + goto done; + } + + /* + * If moisture_en is already enabled, then skip to plug type + * detection. + */ + if (snd_soc_component_read_field(component, WCD938X_MBHC_NEW_CTL_2, WCD938X_M_RTH_CTL_MASK)) + goto done; + + wcd938x_mbhc_moisture_detect_en(component, true); + /* Read moisture comparator status */ + ret = ((snd_soc_component_read(component, WCD938X_MBHC_NEW_FSM_STATUS) + & 0x20) ? 0 : 1); + +done: + return ret; + +} + +static void wcd938x_mbhc_moisture_polling_ctrl(struct snd_soc_component *component, + bool enable) +{ + snd_soc_component_write_field(component, + WCD938X_MBHC_NEW_INT_MOISTURE_DET_POLLING_CTRL, + WCD938X_MOISTURE_EN_POLLING_MASK, enable); +} + +static const struct wcd_mbhc_cb mbhc_cb = { + .clk_setup = wcd938x_mbhc_clk_setup, + .mbhc_bias = wcd938x_mbhc_mbhc_bias_control, + .set_btn_thr = wcd938x_mbhc_program_btn_thr, + .micbias_enable_status = wcd938x_mbhc_micb_en_status, + .hph_pull_up_control_v2 = wcd938x_mbhc_hph_l_pull_up_control, + .mbhc_micbias_control = wcd938x_mbhc_request_micbias, + .mbhc_micb_ramp_control = wcd938x_mbhc_micb_ramp_control, + .mbhc_micb_ctrl_thr_mic = wcd938x_mbhc_micb_ctrl_threshold_mic, + .compute_impedance = wcd938x_wcd_mbhc_calc_impedance, + .mbhc_gnd_det_ctrl = wcd938x_mbhc_gnd_det_ctrl, + .hph_pull_down_ctrl = wcd938x_mbhc_hph_pull_down_ctrl, + .mbhc_moisture_config = wcd938x_mbhc_moisture_config, + .mbhc_get_moisture_status = wcd938x_mbhc_get_moisture_status, + .mbhc_moisture_polling_ctrl = wcd938x_mbhc_moisture_polling_ctrl, + .mbhc_moisture_detect_en = wcd938x_mbhc_moisture_detect_en, +}; + +static int wcd938x_get_hph_type(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); + struct wcd938x_priv *wcd938x = snd_soc_component_get_drvdata(component); + + ucontrol->value.integer.value[0] = wcd_mbhc_get_hph_type(wcd938x->wcd_mbhc); + + return 0; +} + +static int wcd938x_hph_impedance_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + uint32_t zl, zr; + bool hphr; + struct soc_mixer_control *mc; + struct snd_soc_component *component = + snd_soc_kcontrol_component(kcontrol); + struct wcd938x_priv *wcd938x = snd_soc_component_get_drvdata(component); + + mc = (struct soc_mixer_control *)(kcontrol->private_value); + hphr = mc->shift; + wcd_mbhc_get_impedance(wcd938x->wcd_mbhc, &zl, &zr); + dev_dbg(component->dev, "%s: zl=%u(ohms), zr=%u(ohms)\n", __func__, zl, zr); + ucontrol->value.integer.value[0] = hphr ? zr : zl; + + return 0; +} + +static const struct snd_kcontrol_new hph_type_detect_controls[] = { + SOC_SINGLE_EXT("HPH Type", 0, 0, UINT_MAX, 0, + wcd938x_get_hph_type, NULL), +}; + +static const struct snd_kcontrol_new impedance_detect_controls[] = { + SOC_SINGLE_EXT("HPHL Impedance", 0, 0, UINT_MAX, 0, + wcd938x_hph_impedance_get, NULL), + SOC_SINGLE_EXT("HPHR Impedance", 0, 1, UINT_MAX, 0, + wcd938x_hph_impedance_get, NULL), +}; + +static int wcd938x_mbhc_init(struct snd_soc_component *component) +{ + struct wcd938x_priv *wcd938x = snd_soc_component_get_drvdata(component); + struct wcd_mbhc_intr *intr_ids = &wcd938x->intr_ids; + + intr_ids->mbhc_sw_intr = regmap_irq_get_virq(wcd938x->irq_chip, + WCD938X_IRQ_MBHC_SW_DET); + intr_ids->mbhc_btn_press_intr = regmap_irq_get_virq(wcd938x->irq_chip, + WCD938X_IRQ_MBHC_BUTTON_PRESS_DET); + intr_ids->mbhc_btn_release_intr = regmap_irq_get_virq(wcd938x->irq_chip, + WCD938X_IRQ_MBHC_BUTTON_RELEASE_DET); + intr_ids->mbhc_hs_ins_intr = regmap_irq_get_virq(wcd938x->irq_chip, + WCD938X_IRQ_MBHC_ELECT_INS_REM_LEG_DET); + intr_ids->mbhc_hs_rem_intr = regmap_irq_get_virq(wcd938x->irq_chip, + WCD938X_IRQ_MBHC_ELECT_INS_REM_DET); + intr_ids->hph_left_ocp = regmap_irq_get_virq(wcd938x->irq_chip, + WCD938X_IRQ_HPHL_OCP_INT); + intr_ids->hph_right_ocp = regmap_irq_get_virq(wcd938x->irq_chip, + WCD938X_IRQ_HPHR_OCP_INT); + + wcd938x->wcd_mbhc = wcd_mbhc_init(component, &mbhc_cb, intr_ids, wcd_mbhc_fields, true); + + snd_soc_add_component_controls(component, impedance_detect_controls, + ARRAY_SIZE(impedance_detect_controls)); + snd_soc_add_component_controls(component, hph_type_detect_controls, + ARRAY_SIZE(hph_type_detect_controls)); + + return 0; +} +/* END MBHC */ + static const struct snd_kcontrol_new wcd938x_snd_controls[] = { SOC_SINGLE_EXT("HPHL_COMP Switch", WCD938X_COMP_L, 0, 1, 0, wcd938x_get_compander, wcd938x_set_compander), @@ -3222,15 +3995,6 @@ static const struct snd_soc_dapm_route wcd938x_audio_map[] = { {"EAR", NULL, "EAR PGA"}, };

-static int wcd938x_get_micb_vout_ctl_val(u32 micb_mv) -{ - /* min micbias voltage is 1V and maximum is 2.85V */ - if (micb_mv < 1000 || micb_mv > 2850) - return -EINVAL; - - return (micb_mv - 1000) / 50; -} - static int wcd938x_set_micbias_data(struct wcd938x_priv *wcd938x) { int vout_ctl_1, vout_ctl_2, vout_ctl_3, vout_ctl_4; @@ -3369,10 +4133,27 @@ static int wcd938x_soc_codec_probe(struct snd_soc_component *component) default: break; } + + ret = wcd938x_mbhc_init(component); + if (ret) + dev_err(component->dev, "mbhc initialization failed\n"); err: return ret; }

+static int wcd938x_codec_set_jack(struct snd_soc_component *comp, + struct snd_soc_jack *jack, void *data) +{ + struct wcd938x_priv *wcd = dev_get_drvdata(comp->dev); + + if (!jack) + return wcd_mbhc_start(wcd->wcd_mbhc, &wcd->mbhc_cfg, jack); + + wcd_mbhc_stop(wcd->wcd_mbhc); + + return 0; +} + static const struct snd_soc_component_driver soc_codec_dev_wcd938x = { .name = "wcd938x_codec", .probe = wcd938x_soc_codec_probe, @@ -3382,6 +4163,7 @@ static const struct snd_soc_component_driver soc_codec_dev_wcd938x = { .num_dapm_widgets = ARRAY_SIZE(wcd938x_dapm_widgets), .dapm_routes = wcd938x_audio_map, .num_dapm_routes = ARRAY_SIZE(wcd938x_audio_map), + .set_jack = wcd938x_codec_set_jack, };

static void wcd938x_dt_parse_micbias_info(struct device *dev, struct wcd938x_priv *wcd) @@ -3417,6 +4199,7 @@ static void wcd938x_dt_parse_micbias_info(struct device *dev, struct wcd938x_pri

static int wcd938x_populate_dt_data(struct wcd938x_priv *wcd938x, struct device *dev) { + struct wcd_mbhc_config *cfg = &wcd938x->mbhc_cfg; int ret;

wcd938x->reset_gpio = of_get_named_gpio(dev->of_node, "reset-gpios", 0); @@ -3445,6 +4228,17 @@ static int wcd938x_populate_dt_data(struct wcd938x_priv *wcd938x, struct device

wcd938x_dt_parse_micbias_info(dev, wcd938x);

+ cfg->mbhc_micbias = MIC_BIAS_2; + cfg->anc_micbias = MIC_BIAS_2; + cfg->v_hs_max = WCD_MBHC_HS_V_MAX; + cfg->num_btn = WCD938X_MBHC_MAX_BUTTONS; + cfg->micb_mv = wcd938x->micb2_mv; + cfg->linein_th = 5000; + cfg->hs_thr = 1700; + cfg->hph_thr = 50; + + wcd_dt_parse_mbhc_data(dev, cfg); + return 0; }

@@ -3676,6 +4470,7 @@ static int wcd938x_probe(struct platform_device *pdev) return -ENOMEM;

dev_set_drvdata(dev, wcd938x); + mutex_init(&wcd938x->micb_lock);

ret = wcd938x_populate_dt_data(wcd938x, dev); if (ret) {