/* * extcon-arizona.c - Extcon driver Wolfson Arizona devices * * Copyright (C) 2012 Wolfson Microelectronics plc * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define ARIZONA_MAX_MICD_RANGE 8 #define ARIZONA_ACCDET_MODE_MIC 0 #define ARIZONA_ACCDET_MODE_HPL 1 #define ARIZONA_ACCDET_MODE_HPR 2 #define ARIZONA_HPDET_MAX 10000 #define HPDET_DEBOUNCE 500 #define DEFAULT_MICD_TIMEOUT 2000 struct arizona_extcon_info { struct device *dev; struct arizona *arizona; struct mutex lock; struct regulator *micvdd; struct input_dev *input; u16 last_jackdet; int micd_mode; const struct arizona_micd_config *micd_modes; int micd_num_modes; const struct arizona_micd_range *micd_ranges; int num_micd_ranges; int micd_timeout; bool micd_reva; bool micd_clamp; struct delayed_work hpdet_work; struct delayed_work micd_detect_work; struct delayed_work micd_timeout_work; bool hpdet_active; bool hpdet_done; bool hpdet_retried; int num_hpdet_res; unsigned int hpdet_res[3]; bool mic; bool detecting; int jack_flips; int hpdet_ip; struct extcon_dev edev; }; static const struct arizona_micd_config micd_default_modes[] = { { ARIZONA_ACCDET_SRC, 1 << ARIZONA_MICD_BIAS_SRC_SHIFT, 0 }, { 0, 2 << ARIZONA_MICD_BIAS_SRC_SHIFT, 1 }, }; static const struct arizona_micd_range micd_default_ranges[] = { { .max = 11, .key = BTN_0 }, { .max = 28, .key = BTN_1 }, { .max = 54, .key = BTN_2 }, { .max = 100, .key = BTN_3 }, { .max = 186, .key = BTN_4 }, { .max = 430, .key = BTN_5 }, }; static const int arizona_micd_levels[] = { 3, 6, 8, 11, 13, 16, 18, 21, 23, 26, 28, 31, 34, 36, 39, 41, 44, 46, 49, 52, 54, 57, 60, 62, 65, 67, 70, 73, 75, 78, 81, 83, 89, 94, 100, 105, 111, 116, 122, 127, 139, 150, 161, 173, 186, 196, 209, 220, 245, 270, 295, 321, 348, 375, 402, 430, 489, 550, 614, 681, 752, 903, 1071, 1257, }; #define ARIZONA_CABLE_MECHANICAL 0 #define ARIZONA_CABLE_MICROPHONE 1 #define ARIZONA_CABLE_HEADPHONE 2 #define ARIZONA_CABLE_LINEOUT 3 static const char *arizona_cable[] = { "Mechanical", "Microphone", "Headphone", "Line-out", NULL, }; static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info); static void arizona_extcon_do_magic(struct arizona_extcon_info *info, unsigned int magic) { struct arizona *arizona = info->arizona; int ret; mutex_lock(&arizona->dapm->card->dapm_mutex); arizona->hpdet_magic = magic; /* Keep the HP output stages disabled while doing the magic */ if (magic) { ret = regmap_update_bits(arizona->regmap, ARIZONA_OUTPUT_ENABLES_1, ARIZONA_OUT1L_ENA | ARIZONA_OUT1R_ENA, 0); if (ret != 0) dev_warn(arizona->dev, "Failed to disable headphone outputs: %d\n", ret); } ret = regmap_update_bits(arizona->regmap, 0x225, 0x4000, magic); if (ret != 0) dev_warn(arizona->dev, "Failed to do magic: %d\n", ret); ret = regmap_update_bits(arizona->regmap, 0x226, 0x4000, magic); if (ret != 0) dev_warn(arizona->dev, "Failed to do magic: %d\n", ret); /* Restore the desired state while not doing the magic */ if (!magic) { ret = regmap_update_bits(arizona->regmap, ARIZONA_OUTPUT_ENABLES_1, ARIZONA_OUT1L_ENA | ARIZONA_OUT1R_ENA, arizona->hp_ena); if (ret != 0) dev_warn(arizona->dev, "Failed to restore headphone outputs: %d\n", ret); } mutex_unlock(&arizona->dapm->card->dapm_mutex); } static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode) { struct arizona *arizona = info->arizona; mode %= info->micd_num_modes; if (arizona->pdata.micd_pol_gpio > 0) gpio_set_value_cansleep(arizona->pdata.micd_pol_gpio, info->micd_modes[mode].gpio); regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1, ARIZONA_MICD_BIAS_SRC_MASK, info->micd_modes[mode].bias); regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1, ARIZONA_ACCDET_SRC, info->micd_modes[mode].src); info->micd_mode = mode; dev_dbg(arizona->dev, "Set jack polarity to %d\n", mode); } static const char *arizona_extcon_get_micbias(struct arizona_extcon_info *info) { switch (info->micd_modes[0].bias >> ARIZONA_MICD_BIAS_SRC_SHIFT) { case 1: return "MICBIAS1"; case 2: return "MICBIAS2"; case 3: return "MICBIAS3"; default: return "MICVDD"; } } static void arizona_extcon_pulse_micbias(struct arizona_extcon_info *info) { struct arizona *arizona = info->arizona; const char *widget = arizona_extcon_get_micbias(info); struct snd_soc_dapm_context *dapm = arizona->dapm; int ret; mutex_lock(&dapm->card->dapm_mutex); ret = snd_soc_dapm_force_enable_pin(dapm, widget); if (ret != 0) dev_warn(arizona->dev, "Failed to enable %s: %d\n", widget, ret); mutex_unlock(&dapm->card->dapm_mutex); snd_soc_dapm_sync(dapm); if (!arizona->pdata.micd_force_micbias) { mutex_lock(&dapm->card->dapm_mutex); ret = snd_soc_dapm_disable_pin(arizona->dapm, widget); if (ret != 0) dev_warn(arizona->dev, "Failed to disable %s: %d\n", widget, ret); mutex_unlock(&dapm->card->dapm_mutex); snd_soc_dapm_sync(dapm); } } static void arizona_start_mic(struct arizona_extcon_info *info) { struct arizona *arizona = info->arizona; bool change; int ret; /* Microphone detection can't use idle mode */ pm_runtime_get(info->dev); if (info->detecting) { ret = regulator_allow_bypass(info->micvdd, false); if (ret != 0) { dev_err(arizona->dev, "Failed to regulate MICVDD: %d\n", ret); } } ret = regulator_enable(info->micvdd); if (ret != 0) { dev_err(arizona->dev, "Failed to enable MICVDD: %d\n", ret); } if (info->micd_reva) { regmap_write(arizona->regmap, 0x80, 0x3); regmap_write(arizona->regmap, 0x294, 0); regmap_write(arizona->regmap, 0x80, 0x0); } regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1, ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC); arizona_extcon_pulse_micbias(info); regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1, ARIZONA_MICD_ENA, ARIZONA_MICD_ENA, &change); if (!change) { regulator_disable(info->micvdd); pm_runtime_put_autosuspend(info->dev); } } static void arizona_stop_mic(struct arizona_extcon_info *info) { struct arizona *arizona = info->arizona; const char *widget = arizona_extcon_get_micbias(info); struct snd_soc_dapm_context *dapm = arizona->dapm; bool change; int ret; regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1, ARIZONA_MICD_ENA, 0, &change); mutex_lock(&dapm->card->dapm_mutex); ret = snd_soc_dapm_disable_pin(dapm, widget); if (ret != 0) dev_warn(arizona->dev, "Failed to disable %s: %d\n", widget, ret); mutex_unlock(&dapm->card->dapm_mutex); snd_soc_dapm_sync(dapm); if (info->micd_reva) { regmap_write(arizona->regmap, 0x80, 0x3); regmap_write(arizona->regmap, 0x294, 2); regmap_write(arizona->regmap, 0x80, 0x0); } ret = regulator_allow_bypass(info->micvdd, true); if (ret != 0) { dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n", ret); } if (change) { regulator_disable(info->micvdd); pm_runtime_mark_last_busy(info->dev); pm_runtime_put_autosuspend(info->dev); } } static struct { unsigned int factor_a; unsigned int factor_b; } arizona_hpdet_b_ranges[] = { { 5528, 362464 }, { 11084, 6186851 }, { 11065, 65460395 }, }; static struct { int min; int max; } arizona_hpdet_c_ranges[] = { { 0, 30 }, { 8, 100 }, { 100, 1000 }, { 1000, 10000 }, }; static int arizona_hpdet_read(struct arizona_extcon_info *info) { struct arizona *arizona = info->arizona; unsigned int val, range; int ret; ret = regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_2, &val); if (ret != 0) { dev_err(arizona->dev, "Failed to read HPDET status: %d\n", ret); return ret; } switch (info->hpdet_ip) { case 0: if (!(val & ARIZONA_HP_DONE)) { dev_err(arizona->dev, "HPDET did not complete: %x\n", val); return -EAGAIN; } val &= ARIZONA_HP_LVL_MASK; break; case 1: if (!(val & ARIZONA_HP_DONE_B)) { dev_err(arizona->dev, "HPDET did not complete: %x\n", val); return -EAGAIN; } ret = regmap_read(arizona->regmap, ARIZONA_HP_DACVAL, &val); if (ret != 0) { dev_err(arizona->dev, "Failed to read HP value: %d\n", ret); return -EAGAIN; } regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1, &range); range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK) >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT; if (range < ARRAY_SIZE(arizona_hpdet_b_ranges) - 1 && (val < 100 || val > 0x3fb)) { range++; dev_dbg(arizona->dev, "Moving to HPDET range %d\n", range); regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1, ARIZONA_HP_IMPEDANCE_RANGE_MASK, range << ARIZONA_HP_IMPEDANCE_RANGE_SHIFT); return -EAGAIN; } /* If we go out of range report top of range */ if (val < 100 || val > 0x3fb) { dev_dbg(arizona->dev, "Measurement out of range\n"); return ARIZONA_HPDET_MAX; } dev_dbg(arizona->dev, "HPDET read %d in range %d\n", val, range); val = arizona_hpdet_b_ranges[range].factor_b / ((val * 100) - arizona_hpdet_b_ranges[range].factor_a); break; default: dev_warn(arizona->dev, "Unknown HPDET IP revision %d\n", info->hpdet_ip); case 2: if (!(val & ARIZONA_HP_DONE_B)) { dev_err(arizona->dev, "HPDET did not complete: %x\n", val); return -EAGAIN; } val &= ARIZONA_HP_LVL_B_MASK; regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1, &range); range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK) >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT; /* Skip up or down a range? */ if (range && (val < arizona_hpdet_c_ranges[range].min)) { range--; dev_dbg(arizona->dev, "Moving to HPDET range %d-%d\n", arizona_hpdet_c_ranges[range].min, arizona_hpdet_c_ranges[range].max); regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1, ARIZONA_HP_IMPEDANCE_RANGE_MASK, range << ARIZONA_HP_IMPEDANCE_RANGE_SHIFT); return -EAGAIN; } if (range < ARRAY_SIZE(arizona_hpdet_c_ranges) - 1 && (val >= arizona_hpdet_c_ranges[range].max)) { range++; dev_dbg(arizona->dev, "Moving to HPDET range %d-%d\n", arizona_hpdet_c_ranges[range].min, arizona_hpdet_c_ranges[range].max); regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1, ARIZONA_HP_IMPEDANCE_RANGE_MASK, range << ARIZONA_HP_IMPEDANCE_RANGE_SHIFT); return -EAGAIN; } } dev_dbg(arizona->dev, "HP impedance %d ohms\n", val); return val; } static int arizona_hpdet_do_id(struct arizona_extcon_info *info, int *reading, bool *mic) { struct arizona *arizona = info->arizona; int id_gpio = arizona->pdata.hpdet_id_gpio; /* * If we're using HPDET for accessory identification we need * to take multiple measurements, step through them in sequence. */ if (arizona->pdata.hpdet_acc_id) { info->hpdet_res[info->num_hpdet_res++] = *reading; /* Only check the mic directly if we didn't already ID it */ if (id_gpio && info->num_hpdet_res == 1) { dev_dbg(arizona->dev, "Measuring mic\n"); regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1, ARIZONA_ACCDET_MODE_MASK | ARIZONA_ACCDET_SRC, ARIZONA_ACCDET_MODE_HPR | info->micd_modes[0].src); gpio_set_value_cansleep(id_gpio, 1); regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1, ARIZONA_HP_POLL, ARIZONA_HP_POLL); return -EAGAIN; } /* OK, got both. Now, compare... */ dev_dbg(arizona->dev, "HPDET measured %d %d\n", info->hpdet_res[0], info->hpdet_res[1]); /* Take the headphone impedance for the main report */ *reading = info->hpdet_res[0]; /* Sometimes we get false readings due to slow insert */ if (*reading >= ARIZONA_HPDET_MAX && !info->hpdet_retried) { dev_dbg(arizona->dev, "Retrying high impedance\n"); info->num_hpdet_res = 0; info->hpdet_retried = true; arizona_start_hpdet_acc_id(info); pm_runtime_put(info->dev); return -EAGAIN; } /* * If we measure the mic as */ if (!id_gpio || info->hpdet_res[1] > 50) { dev_dbg(arizona->dev, "Detected mic\n"); *mic = true; info->detecting = true; } else { dev_dbg(arizona->dev, "Detected headphone\n"); } /* Make sure everything is reset back to the real polarity */ regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1, ARIZONA_ACCDET_SRC, info->micd_modes[0].src); } return 0; } static irqreturn_t arizona_hpdet_irq(int irq, void *data) { struct arizona_extcon_info *info = data; struct arizona *arizona = info->arizona; int id_gpio = arizona->pdata.hpdet_id_gpio; int report = ARIZONA_CABLE_HEADPHONE; int ret, reading; bool mic = false; mutex_lock(&info->lock); /* If we got a spurious IRQ for some reason then ignore it */ if (!info->hpdet_active) { dev_warn(arizona->dev, "Spurious HPDET IRQ\n"); mutex_unlock(&info->lock); return IRQ_NONE; } /* If the cable was removed while measuring ignore the result */ ret = extcon_get_cable_state_(&info->edev, ARIZONA_CABLE_MECHANICAL); if (ret < 0) { dev_err(arizona->dev, "Failed to check cable state: %d\n", ret); goto out; } else if (!ret) { dev_dbg(arizona->dev, "Ignoring HPDET for removed cable\n"); goto done; } ret = arizona_hpdet_read(info); if (ret == -EAGAIN) { goto out; } else if (ret < 0) { goto done; } reading = ret; /* Reset back to starting range */ regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1, ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL, 0); ret = arizona_hpdet_do_id(info, &reading, &mic); if (ret == -EAGAIN) { goto out; } else if (ret < 0) { goto done; } /* Report high impedence cables as line outputs */ if (reading >= 5000) report = ARIZONA_CABLE_LINEOUT; else report = ARIZONA_CABLE_HEADPHONE; ret = extcon_set_cable_state_(&info->edev, report, true); if (ret != 0) dev_err(arizona->dev, "Failed to report HP/line: %d\n", ret); arizona_extcon_do_magic(info, 0); done: if (id_gpio) gpio_set_value_cansleep(id_gpio, 0); /* Revert back to MICDET mode */ regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1, ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC); /* If we have a mic then reenable MICDET */ if (mic || info->mic) arizona_start_mic(info); if (info->hpdet_active) { pm_runtime_put_autosuspend(info->dev); info->hpdet_active = false; } info->hpdet_done = true; out: mutex_unlock(&info->lock); return IRQ_HANDLED; } static void arizona_identify_headphone(struct arizona_extcon_info *info) { struct arizona *arizona = info->arizona; int ret; if (info->hpdet_done) return; dev_dbg(arizona->dev, "Starting HPDET\n"); /* Make sure we keep the device enabled during the measurement */ pm_runtime_get(info->dev); info->hpdet_active = true; if (info->mic) arizona_stop_mic(info); arizona_extcon_do_magic(info, 0x4000); ret = regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1, ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_HPL); if (ret != 0) { dev_err(arizona->dev, "Failed to set HPDETL mode: %d\n", ret); goto err; } ret = regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1, ARIZONA_HP_POLL, ARIZONA_HP_POLL); if (ret != 0) { dev_err(arizona->dev, "Can't start HPDETL measurement: %d\n", ret); goto err; } return; err: regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1, ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC); /* Just report headphone */ ret = extcon_update_state(&info->edev, 1 << ARIZONA_CABLE_HEADPHONE, 1 << ARIZONA_CABLE_HEADPHONE); if (ret != 0) dev_err(arizona->dev, "Failed to report headphone: %d\n", ret); if (info->mic) arizona_start_mic(info); info->hpdet_active = false; } static void arizona_start_hpdet_acc_id(struct arizona_extcon_info *info) { struct arizona *arizona = info->arizona; int hp_reading = 32; bool mic; int ret; dev_dbg(arizona->dev, "Starting identification via HPDET\n"); /* Make sure we keep the device enabled during the measurement */ pm_runtime_get_sync(info->dev); info->hpdet_active = true; arizona_extcon_do_magic(info, 0x4000); ret = regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1, ARIZONA_ACCDET_SRC | ARIZONA_ACCDET_MODE_MASK, info->micd_modes[0].src | ARIZONA_ACCDET_MODE_HPL); if (ret != 0) { dev_err(arizona->dev, "Failed to set HPDETL mode: %d\n", ret); goto err; } if (arizona->pdata.hpdet_acc_id_line) { ret = regmap_update_bits(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1, ARIZONA_HP_POLL, ARIZONA_HP_POLL); if (ret != 0) { dev_err(arizona->dev, "Can't start HPDETL measurement: %d\n", ret); goto err; } } else { arizona_hpdet_do_id(info, &hp_reading, &mic); } return; err: regmap_update_bits(arizona->regmap, ARIZONA_ACCESSORY_DETECT_MODE_1, ARIZONA_ACCDET_MODE_MASK, ARIZONA_ACCDET_MODE_MIC); /* Just report headphone */ ret = extcon_update_state(&info->edev, 1 << ARIZONA_CABLE_HEADPHONE, 1 << ARIZONA_CABLE_HEADPHONE); if (ret != 0) dev_err(arizona->dev, "Failed to report headphone: %d\n", ret); info->hpdet_active = false; } static void arizona_micd_timeout_work(struct work_struct *work) { struct arizona_extcon_info *info = container_of(work, struct arizona_extcon_info, micd_timeout_work.work); mutex_lock(&info->lock); dev_dbg(info->arizona->dev, "MICD timed out, reporting HP\n"); arizona_identify_headphone(info); info->detecting = false; arizona_stop_mic(info); mutex_unlock(&info->lock); } static void arizona_micd_detect(struct work_struct *work) { struct arizona_extcon_info *info = container_of(work, struct arizona_extcon_info, micd_detect_work.work); struct arizona *arizona = info->arizona; unsigned int val = 0, lvl; int ret, i, key; cancel_delayed_work_sync(&info->micd_timeout_work); mutex_lock(&info->lock); for (i = 0; i < 10 && !(val & 0x7fc); i++) { ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val); if (ret != 0) { dev_err(arizona->dev, "Failed to read MICDET: %d\n", ret); mutex_unlock(&info->lock); return; } dev_dbg(arizona->dev, "MICDET: %x\n", val); if (!(val & ARIZONA_MICD_VALID)) { dev_warn(arizona->dev, "Microphone detection state invalid\n"); mutex_unlock(&info->lock); return; } } if (i == 10 && !(val & 0x7fc)) { dev_err(arizona->dev, "Failed to get valid MICDET value\n"); mutex_unlock(&info->lock); return; } /* Due to jack detect this should never happen */ if (!(val & ARIZONA_MICD_STS)) { dev_warn(arizona->dev, "Detected open circuit\n"); info->detecting = false; goto handled; } /* If we got a high impedence we should have a headset, report it. */ if (info->detecting && (val & 0x400)) { arizona_identify_headphone(info); ret = extcon_update_state(&info->edev, 1 << ARIZONA_CABLE_MICROPHONE, 1 << ARIZONA_CABLE_MICROPHONE); if (ret != 0) dev_err(arizona->dev, "Headset report failed: %d\n", ret); /* Don't need to regulate for button detection */ ret = regulator_allow_bypass(info->micvdd, false); if (ret != 0) { dev_err(arizona->dev, "Failed to bypass MICVDD: %d\n", ret); } info->mic = true; info->detecting = false; goto handled; } /* If we detected a lower impedence during initial startup * then we probably have the wrong polarity, flip it. Don't * do this for the lowest impedences to speed up detection of * plain headphones. If both polarities report a low * impedence then give up and report headphones. */ if (info->detecting && (val & 0x3f8)) { if (info->jack_flips >= info->micd_num_modes * 10) { dev_dbg(arizona->dev, "Detected HP/line\n"); arizona_identify_headphone(info); info->detecting = false; arizona_stop_mic(info); } else { info->micd_mode++; if (info->micd_mode == info->micd_num_modes) info->micd_mode = 0; arizona_extcon_set_mode(info, info->micd_mode); info->jack_flips++; } goto handled; } /* * If we're still detecting and we detect a short then we've * got a headphone. Otherwise it's a button press. */ if (val & 0x3fc) { if (info->mic) { dev_dbg(arizona->dev, "Mic button detected\n"); lvl = val & ARIZONA_MICD_LVL_MASK; lvl >>= ARIZONA_MICD_LVL_SHIFT; for (i = 0; i < info->num_micd_ranges; i++) input_report_key(info->input, info->micd_ranges[i].key, 0); WARN_ON(!lvl); WARN_ON(ffs(lvl) - 1 >= info->num_micd_ranges); if (lvl && ffs(lvl) - 1 < info->num_micd_ranges) { key = info->micd_ranges[ffs(lvl) - 1].key; input_report_key(info->input, key, 1); input_sync(info->input); } } else if (info->detecting) { dev_dbg(arizona->dev, "Headphone detected\n"); info->detecting = false; arizona_stop_mic(info); arizona_identify_headphone(info); } else { dev_warn(arizona->dev, "Button with no mic: %x\n", val); } } else { dev_dbg(arizona->dev, "Mic button released\n"); for (i = 0; i < info->num_micd_ranges; i++) input_report_key(info->input, info->micd_ranges[i].key, 0); input_sync(info->input); arizona_extcon_pulse_micbias(info); } handled: if (info->detecting) schedule_delayed_work(&info->micd_timeout_work, msecs_to_jiffies(info->micd_timeout)); pm_runtime_mark_last_busy(info->dev); mutex_unlock(&info->lock); } static irqreturn_t arizona_micdet(int irq, void *data) { struct arizona_extcon_info *info = data; struct arizona *arizona = info->arizona; int debounce = arizona->pdata.micd_detect_debounce; cancel_delayed_work_sync(&info->micd_detect_work); cancel_delayed_work_sync(&info->micd_timeout_work); mutex_lock(&info->lock); if (!info->detecting) debounce = 0; mutex_unlock(&info->lock); if (debounce) schedule_delayed_work(&info->micd_detect_work, msecs_to_jiffies(debounce)); else arizona_micd_detect(&info->micd_detect_work.work); return IRQ_HANDLED; } static void arizona_hpdet_work(struct work_struct *work) { struct arizona_extcon_info *info = container_of(work, struct arizona_extcon_info, hpdet_work.work); mutex_lock(&info->lock); arizona_start_hpdet_acc_id(info); mutex_unlock(&info->lock); } static irqreturn_t arizona_jackdet(int irq, void *data) { struct arizona_extcon_info *info = data; struct arizona *arizona = info->arizona; unsigned int val, present, mask; bool cancelled_hp, cancelled_mic; int ret, i; cancelled_hp = cancel_delayed_work_sync(&info->hpdet_work); cancelled_mic = cancel_delayed_work_sync(&info->micd_timeout_work); pm_runtime_get_sync(info->dev); mutex_lock(&info->lock); if (arizona->pdata.jd_gpio5) { mask = ARIZONA_MICD_CLAMP_STS; present = 0; } else { mask = ARIZONA_JD1_STS; present = ARIZONA_JD1_STS; } ret = regmap_read(arizona->regmap, ARIZONA_AOD_IRQ_RAW_STATUS, &val); if (ret != 0) { dev_err(arizona->dev, "Failed to read jackdet status: %d\n", ret); mutex_unlock(&info->lock); pm_runtime_put_autosuspend(info->dev); return IRQ_NONE; } val &= mask; if (val == info->last_jackdet) { dev_dbg(arizona->dev, "Suppressing duplicate JACKDET\n"); if (cancelled_hp) schedule_delayed_work(&info->hpdet_work, msecs_to_jiffies(HPDET_DEBOUNCE)); if (cancelled_mic) schedule_delayed_work(&info->micd_timeout_work, msecs_to_jiffies(info->micd_timeout)); goto out; } info->last_jackdet = val; if (info->last_jackdet == present) { dev_dbg(arizona->dev, "Detected jack\n"); ret = extcon_set_cable_state_(&info->edev, ARIZONA_CABLE_MECHANICAL, true); if (ret != 0) dev_err(arizona->dev, "Mechanical report failed: %d\n", ret); if (!arizona->pdata.hpdet_acc_id) { info->detecting = true; info->mic = false; info->jack_flips = 0; arizona_start_mic(info); } else { schedule_delayed_work(&info->hpdet_work, msecs_to_jiffies(HPDET_DEBOUNCE)); } regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_DEBOUNCE, ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB, 0); } else { dev_dbg(arizona->dev, "Detected jack removal\n"); arizona_stop_mic(info); info->num_hpdet_res = 0; for (i = 0; i < ARRAY_SIZE(info->hpdet_res); i++) info->hpdet_res[i] = 0; info->mic = false; info->hpdet_done = false; info->hpdet_retried = false; for (i = 0; i < info->num_micd_ranges; i++) input_report_key(info->input, info->micd_ranges[i].key, 0); input_sync(info->input); ret = extcon_update_state(&info->edev, 0xffffffff, 0); if (ret != 0) dev_err(arizona->dev, "Removal report failed: %d\n", ret); regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_DEBOUNCE, ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB, ARIZONA_MICD_CLAMP_DB | ARIZONA_JD1_DB); } if (arizona->pdata.micd_timeout) info->micd_timeout = arizona->pdata.micd_timeout; else info->micd_timeout = DEFAULT_MICD_TIMEOUT; /* Clear trig_sts to make sure DCVDD is not forced up */ regmap_write(arizona->regmap, ARIZONA_AOD_WKUP_AND_TRIG, ARIZONA_MICD_CLAMP_FALL_TRIG_STS | ARIZONA_MICD_CLAMP_RISE_TRIG_STS | ARIZONA_JD1_FALL_TRIG_STS | ARIZONA_JD1_RISE_TRIG_STS); out: mutex_unlock(&info->lock); pm_runtime_mark_last_busy(info->dev); pm_runtime_put_autosuspend(info->dev); return IRQ_HANDLED; } /* Map a level onto a slot in the register bank */ static void arizona_micd_set_level(struct arizona *arizona, int index, unsigned int level) { int reg; unsigned int mask; reg = ARIZONA_MIC_DETECT_LEVEL_4 - (index / 2); if (!(index % 2)) { mask = 0x3f00; level <<= 8; } else { mask = 0x3f; } /* Program the level itself */ regmap_update_bits(arizona->regmap, reg, mask, level); } static int arizona_extcon_probe(struct platform_device *pdev) { struct arizona *arizona = dev_get_drvdata(pdev->dev.parent); struct arizona_pdata *pdata; struct arizona_extcon_info *info; unsigned int val; int jack_irq_fall, jack_irq_rise; int ret, mode, i, j; if (!arizona->dapm || !arizona->dapm->card) return -EPROBE_DEFER; pdata = dev_get_platdata(arizona->dev); info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); if (!info) { dev_err(&pdev->dev, "Failed to allocate memory\n"); ret = -ENOMEM; goto err; } info->micvdd = devm_regulator_get(arizona->dev, "MICVDD"); if (IS_ERR(info->micvdd)) { ret = PTR_ERR(info->micvdd); dev_err(arizona->dev, "Failed to get MICVDD: %d\n", ret); goto err; } mutex_init(&info->lock); info->arizona = arizona; info->dev = &pdev->dev; info->last_jackdet = ~(ARIZONA_MICD_CLAMP_STS | ARIZONA_JD1_STS); INIT_DELAYED_WORK(&info->hpdet_work, arizona_hpdet_work); INIT_DELAYED_WORK(&info->micd_detect_work, arizona_micd_detect); INIT_DELAYED_WORK(&info->micd_timeout_work, arizona_micd_timeout_work); platform_set_drvdata(pdev, info); switch (arizona->type) { case WM5102: switch (arizona->rev) { case 0: info->micd_reva = true; break; default: info->micd_clamp = true; info->hpdet_ip = 1; break; } break; default: break; } info->edev.name = "Headset Jack"; info->edev.supported_cable = arizona_cable; ret = extcon_dev_register(&info->edev, arizona->dev); if (ret < 0) { dev_err(arizona->dev, "extcon_dev_register() failed: %d\n", ret); goto err; } info->input = devm_input_allocate_device(&pdev->dev); if (!info->input) { dev_err(arizona->dev, "Can't allocate input dev\n"); ret = -ENOMEM; goto err_register; } info->input->name = "Headset"; info->input->phys = "arizona/extcon"; info->input->dev.parent = &pdev->dev; if (pdata->num_micd_configs) { info->micd_modes = pdata->micd_configs; info->micd_num_modes = pdata->num_micd_configs; } else { info->micd_modes = micd_default_modes; info->micd_num_modes = ARRAY_SIZE(micd_default_modes); } if (arizona->pdata.micd_pol_gpio > 0) { if (info->micd_modes[0].gpio) mode = GPIOF_OUT_INIT_HIGH; else mode = GPIOF_OUT_INIT_LOW; ret = devm_gpio_request_one(&pdev->dev, arizona->pdata.micd_pol_gpio, mode, "MICD polarity"); if (ret != 0) { dev_err(arizona->dev, "Failed to request GPIO%d: %d\n", arizona->pdata.micd_pol_gpio, ret); goto err_register; } } if (arizona->pdata.hpdet_id_gpio > 0) { ret = devm_gpio_request_one(&pdev->dev, arizona->pdata.hpdet_id_gpio, GPIOF_OUT_INIT_LOW, "HPDET"); if (ret != 0) { dev_err(arizona->dev, "Failed to request GPIO%d: %d\n", arizona->pdata.hpdet_id_gpio, ret); goto err_register; } } if (arizona->pdata.micd_bias_start_time) regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1, ARIZONA_MICD_BIAS_STARTTIME_MASK, arizona->pdata.micd_bias_start_time << ARIZONA_MICD_BIAS_STARTTIME_SHIFT); if (arizona->pdata.micd_rate) regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1, ARIZONA_MICD_RATE_MASK, arizona->pdata.micd_rate << ARIZONA_MICD_RATE_SHIFT); if (arizona->pdata.micd_dbtime) regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1, ARIZONA_MICD_DBTIME_MASK, arizona->pdata.micd_dbtime << ARIZONA_MICD_DBTIME_SHIFT); BUILD_BUG_ON(ARRAY_SIZE(arizona_micd_levels) != 0x40); if (arizona->pdata.num_micd_ranges) { info->micd_ranges = pdata->micd_ranges; info->num_micd_ranges = pdata->num_micd_ranges; } else { info->micd_ranges = micd_default_ranges; info->num_micd_ranges = ARRAY_SIZE(micd_default_ranges); } if (arizona->pdata.num_micd_ranges > ARIZONA_MAX_MICD_RANGE) { dev_err(arizona->dev, "Too many MICD ranges: %d\n", arizona->pdata.num_micd_ranges); } if (info->num_micd_ranges > 1) { for (i = 1; i < info->num_micd_ranges; i++) { if (info->micd_ranges[i - 1].max > info->micd_ranges[i].max) { dev_err(arizona->dev, "MICD ranges must be sorted\n"); ret = -EINVAL; goto err_input; } } } /* Disable all buttons by default */ regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2, ARIZONA_MICD_LVL_SEL_MASK, 0x81); /* Set up all the buttons the user specified */ for (i = 0; i < info->num_micd_ranges; i++) { for (j = 0; j < ARRAY_SIZE(arizona_micd_levels); j++) if (arizona_micd_levels[j] >= info->micd_ranges[i].max) break; if (j == ARRAY_SIZE(arizona_micd_levels)) { dev_err(arizona->dev, "Unsupported MICD level %d\n", info->micd_ranges[i].max); ret = -EINVAL; goto err_input; } dev_dbg(arizona->dev, "%d ohms for MICD threshold %d\n", arizona_micd_levels[j], i); arizona_micd_set_level(arizona, i, j); input_set_capability(info->input, EV_KEY, info->micd_ranges[i].key); /* Enable reporting of that range */ regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_2, 1 << i, 1 << i); } /* Set all the remaining keys to a maximum */ for (; i < ARIZONA_MAX_MICD_RANGE; i++) arizona_micd_set_level(arizona, i, 0x3f); /* * If we have a clamp use it, activating in conjunction with * GPIO5 if that is connected for jack detect operation. */ if (info->micd_clamp) { if (arizona->pdata.jd_gpio5) { /* Put the GPIO into input mode with optional pull */ val = 0xc101; if (arizona->pdata.jd_gpio5_nopull) val &= ~ARIZONA_GPN_PU; regmap_write(arizona->regmap, ARIZONA_GPIO5_CTRL, val); regmap_update_bits(arizona->regmap, ARIZONA_MICD_CLAMP_CONTROL, ARIZONA_MICD_CLAMP_MODE_MASK, 0x9); } else { regmap_update_bits(arizona->regmap, ARIZONA_MICD_CLAMP_CONTROL, ARIZONA_MICD_CLAMP_MODE_MASK, 0x4); } regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_DEBOUNCE, ARIZONA_MICD_CLAMP_DB, ARIZONA_MICD_CLAMP_DB); } arizona_extcon_set_mode(info, 0); pm_runtime_enable(&pdev->dev); pm_runtime_idle(&pdev->dev); pm_runtime_get_sync(&pdev->dev); if (arizona->pdata.jd_gpio5) { jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE; jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL; } else { jack_irq_rise = ARIZONA_IRQ_JD_RISE; jack_irq_fall = ARIZONA_IRQ_JD_FALL; } ret = arizona_request_irq(arizona, jack_irq_rise, "JACKDET rise", arizona_jackdet, info); if (ret != 0) { dev_err(&pdev->dev, "Failed to get JACKDET rise IRQ: %d\n", ret); goto err_input; } ret = arizona_set_irq_wake(arizona, jack_irq_rise, 1); if (ret != 0) { dev_err(&pdev->dev, "Failed to set JD rise IRQ wake: %d\n", ret); goto err_rise; } ret = arizona_request_irq(arizona, jack_irq_fall, "JACKDET fall", arizona_jackdet, info); if (ret != 0) { dev_err(&pdev->dev, "Failed to get JD fall IRQ: %d\n", ret); goto err_rise_wake; } ret = arizona_set_irq_wake(arizona, jack_irq_fall, 1); if (ret != 0) { dev_err(&pdev->dev, "Failed to set JD fall IRQ wake: %d\n", ret); goto err_fall; } ret = arizona_request_irq(arizona, ARIZONA_IRQ_MICDET, "MICDET", arizona_micdet, info); if (ret != 0) { dev_err(&pdev->dev, "Failed to get MICDET IRQ: %d\n", ret); goto err_fall_wake; } ret = arizona_request_irq(arizona, ARIZONA_IRQ_HPDET, "HPDET", arizona_hpdet_irq, info); if (ret != 0) { dev_err(&pdev->dev, "Failed to get HPDET IRQ: %d\n", ret); goto err_micdet; } arizona_clk32k_enable(arizona); regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_DEBOUNCE, ARIZONA_JD1_DB, ARIZONA_JD1_DB); regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE, ARIZONA_JD1_ENA, ARIZONA_JD1_ENA); ret = regulator_allow_bypass(info->micvdd, true); if (ret != 0) dev_warn(arizona->dev, "Failed to set MICVDD to bypass: %d\n", ret); pm_runtime_put(&pdev->dev); ret = input_register_device(info->input); if (ret) { dev_err(&pdev->dev, "Can't register input device: %d\n", ret); goto err_hpdet; } return 0; err_hpdet: arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info); err_micdet: arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info); err_fall_wake: arizona_set_irq_wake(arizona, jack_irq_fall, 0); err_fall: arizona_free_irq(arizona, jack_irq_fall, info); err_rise_wake: arizona_set_irq_wake(arizona, jack_irq_rise, 0); err_rise: arizona_free_irq(arizona, jack_irq_rise, info); err_input: err_register: pm_runtime_disable(&pdev->dev); extcon_dev_unregister(&info->edev); err: return ret; } static int arizona_extcon_remove(struct platform_device *pdev) { struct arizona_extcon_info *info = platform_get_drvdata(pdev); struct arizona *arizona = info->arizona; int jack_irq_rise, jack_irq_fall; pm_runtime_disable(&pdev->dev); regmap_update_bits(arizona->regmap, ARIZONA_MICD_CLAMP_CONTROL, ARIZONA_MICD_CLAMP_MODE_MASK, 0); if (arizona->pdata.jd_gpio5) { jack_irq_rise = ARIZONA_IRQ_MICD_CLAMP_RISE; jack_irq_fall = ARIZONA_IRQ_MICD_CLAMP_FALL; } else { jack_irq_rise = ARIZONA_IRQ_JD_RISE; jack_irq_fall = ARIZONA_IRQ_JD_FALL; } arizona_set_irq_wake(arizona, jack_irq_rise, 0); arizona_set_irq_wake(arizona, jack_irq_fall, 0); arizona_free_irq(arizona, ARIZONA_IRQ_HPDET, info); arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info); arizona_free_irq(arizona, jack_irq_rise, info); arizona_free_irq(arizona, jack_irq_fall, info); cancel_delayed_work_sync(&info->hpdet_work); regmap_update_bits(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE, ARIZONA_JD1_ENA, 0); arizona_clk32k_disable(arizona); extcon_dev_unregister(&info->edev); return 0; } static struct platform_driver arizona_extcon_driver = { .driver = { .name = "arizona-extcon", .owner = THIS_MODULE, }, .probe = arizona_extcon_probe, .remove = arizona_extcon_remove, }; module_platform_driver(arizona_extcon_driver); MODULE_DESCRIPTION("Arizona Extcon driver"); MODULE_AUTHOR("Mark Brown "); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:extcon-arizona");