diff options
Diffstat (limited to 'drivers/extcon/extcon-arizona.c')
| -rw-r--r-- | drivers/extcon/extcon-arizona.c | 1500 |
1 files changed, 1500 insertions, 0 deletions
diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c new file mode 100644 index 000000000..a0ed35b33 --- /dev/null +++ b/drivers/extcon/extcon-arizona.c @@ -0,0 +1,1500 @@ +/* + * 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 <linux/kernel.h> +#include <linux/module.h> +#include <linux/i2c.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/err.h> +#include <linux/gpio.h> +#include <linux/input.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/regulator/consumer.h> +#include <linux/extcon.h> + +#include <sound/soc.h> + +#include <linux/mfd/arizona/core.h> +#include <linux/mfd/arizona/pdata.h> +#include <linux/mfd/arizona/registers.h> + +#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_MICD_CLAMP_MODE_JDL 0x4 +#define ARIZONA_MICD_CLAMP_MODE_JDH 0x5 +#define ARIZONA_MICD_CLAMP_MODE_JDL_GP5H 0x9 +#define ARIZONA_MICD_CLAMP_MODE_JDH_GP5H 0xb + +#define ARIZONA_HPDET_MAX 10000 + +#define HPDET_DEBOUNCE 500 +#define DEFAULT_MICD_TIMEOUT 2000 + +#define MICD_LVL_1_TO_7 (ARIZONA_MICD_LVL_1 | ARIZONA_MICD_LVL_2 | \ + ARIZONA_MICD_LVL_3 | ARIZONA_MICD_LVL_4 | \ + ARIZONA_MICD_LVL_5 | ARIZONA_MICD_LVL_6 | \ + ARIZONA_MICD_LVL_7) + +#define MICD_LVL_0_TO_7 (ARIZONA_MICD_LVL_0 | MICD_LVL_1_TO_7) + +#define MICD_LVL_0_TO_8 (MICD_LVL_0_TO_7 | ARIZONA_MICD_LVL_8) + +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, 0 }, + { 0, 2, 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_hp_clamp(struct arizona_extcon_info *info, + bool clamp) +{ + struct arizona *arizona = info->arizona; + unsigned int mask = 0, val = 0; + int ret; + + switch (arizona->type) { + case WM5110: + mask = ARIZONA_HP1L_SHRTO | ARIZONA_HP1L_FLWR | + ARIZONA_HP1L_SHRTI; + if (clamp) + val = ARIZONA_HP1L_SHRTO; + else + val = ARIZONA_HP1L_FLWR | ARIZONA_HP1L_SHRTI; + break; + default: + mask = ARIZONA_RMV_SHRT_HP1L; + if (clamp) + val = ARIZONA_RMV_SHRT_HP1L; + break; + }; + + mutex_lock(&arizona->dapm->card->dapm_mutex); + + arizona->hpdet_clamp = clamp; + + /* Keep the HP output stages disabled while doing the clamp */ + if (clamp) { + 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, ARIZONA_HP_CTRL_1L, + mask, val); + if (ret != 0) + dev_warn(arizona->dev, "Failed to do clamp: %d\n", + ret); + + ret = regmap_update_bits(arizona->regmap, ARIZONA_HP_CTRL_1R, + mask, val); + if (ret != 0) + dev_warn(arizona->dev, "Failed to do clamp: %d\n", + ret); + + /* Restore the desired state while not doing the clamp */ + if (!clamp) { + 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 << + ARIZONA_MICD_BIAS_SRC_SHIFT); + 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) { + 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; + + ret = snd_soc_dapm_force_enable_pin(dapm, widget); + if (ret != 0) + dev_warn(arizona->dev, "Failed to enable %s: %d\n", + widget, ret); + + snd_soc_dapm_sync(dapm); + + if (!arizona->pdata.micd_force_micbias) { + ret = snd_soc_dapm_disable_pin(arizona->dapm, widget); + if (ret != 0) + dev_warn(arizona->dev, "Failed to disable %s: %d\n", + widget, ret); + + 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); + + ret = snd_soc_dapm_disable_pin(dapm, widget); + if (ret != 0) + dev_warn(arizona->dev, + "Failed to disable %s: %d\n", + widget, ret); + + 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 threshold; + unsigned int factor_a; + unsigned int factor_b; +} arizona_hpdet_b_ranges[] = { + { 100, 5528, 362464 }, + { 169, 11084, 6186851 }, + { 169, 11065, 65460395 }, +}; + +#define ARIZONA_HPDET_B_RANGE_MAX 0x3fb + +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 < arizona_hpdet_b_ranges[range].threshold || + val >= ARIZONA_HPDET_B_RANGE_MAX)) { + 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 < arizona_hpdet_b_ranges[range].threshold || + val >= ARIZONA_HPDET_B_RANGE_MAX) { + 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; + /* Convert to ohms, the value is in 0.5 ohm increments */ + val /= 2; + + regmap_read(arizona->regmap, ARIZONA_HEADPHONE_DETECT_1, + &range); + range = (range & ARIZONA_HP_IMPEDANCE_RANGE_MASK) + >> ARIZONA_HP_IMPEDANCE_RANGE_SHIFT; + + /* Skip up a range, or report? */ + 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; + } + + if (range && (val < arizona_hpdet_c_ranges[range].min)) { + dev_dbg(arizona->dev, "Reporting range boundary %d\n", + arizona_hpdet_c_ranges[range].min); + val = arizona_hpdet_c_ranges[range].min; + } + } + + 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 high impedance + */ + 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); + +done: + /* Reset back to starting range */ + regmap_update_bits(arizona->regmap, + ARIZONA_HEADPHONE_DETECT_1, + ARIZONA_HP_IMPEDANCE_RANGE_MASK | ARIZONA_HP_POLL, + 0); + + arizona_extcon_hp_clamp(info, false); + + 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_hp_clamp(info, true); + + 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_set_cable_state_(info->edev, + ARIZONA_CABLE_HEADPHONE, true); + 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_hp_clamp(info, true); + + 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_set_cable_state_(info->edev, + ARIZONA_CABLE_HEADPHONE, true); + 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); + + /* 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); + mutex_unlock(&info->lock); + return; + } else if (!ret) { + dev_dbg(arizona->dev, "Ignoring MICDET for removed cable\n"); + mutex_unlock(&info->lock); + return; + } + + for (i = 0; i < 10 && !(val & MICD_LVL_0_TO_8); 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 & MICD_LVL_0_TO_8)) { + 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 & ARIZONA_MICD_LVL_8)) { + arizona_identify_headphone(info); + + ret = extcon_set_cable_state_(info->edev, + ARIZONA_CABLE_MICROPHONE, true); + + 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, true); + 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 & MICD_LVL_1_TO_7)) { + 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 & MICD_LVL_0_TO_7) { + 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) + queue_delayed_work(system_power_efficient_wq, + &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) + queue_delayed_work(system_power_efficient_wq, + &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; + if (arizona->pdata.jd_invert) + present = ARIZONA_MICD_CLAMP_STS; + else + present = 0; + } else { + mask = ARIZONA_JD1_STS; + if (arizona->pdata.jd_invert) + present = 0; + else + 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) + queue_delayed_work(system_power_efficient_wq, + &info->hpdet_work, + msecs_to_jiffies(HPDET_DEBOUNCE)); + + if (cancelled_mic) { + int micd_timeout = info->micd_timeout; + + queue_delayed_work(system_power_efficient_wq, + &info->micd_timeout_work, + msecs_to_jiffies(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 { + queue_delayed_work(system_power_efficient_wq, + &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; + +out: + /* 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); + + 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 = &arizona->pdata; + struct arizona_extcon_info *info; + unsigned int val; + unsigned int clamp_mode; + int jack_irq_fall, jack_irq_rise; + int ret, mode, i, j; + + if (!arizona->dapm || !arizona->dapm->card) + return -EPROBE_DEFER; + + info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + info->micvdd = devm_regulator_get(&pdev->dev, "MICVDD"); + if (IS_ERR(info->micvdd)) { + ret = PTR_ERR(info->micvdd); + dev_err(arizona->dev, "Failed to get MICVDD: %d\n", ret); + return ret; + } + + 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; + case WM5110: + case WM8280: + switch (arizona->rev) { + case 0 ... 2: + break; + default: + info->micd_clamp = true; + info->hpdet_ip = 2; + break; + } + break; + default: + break; + } + + info->edev = devm_extcon_dev_allocate(&pdev->dev, arizona_cable); + if (IS_ERR(info->edev)) { + dev_err(&pdev->dev, "failed to allocate extcon device\n"); + return -ENOMEM; + } + info->edev->name = "Headset Jack"; + + ret = devm_extcon_dev_register(&pdev->dev, info->edev); + if (ret < 0) { + dev_err(arizona->dev, "extcon_dev_register() failed: %d\n", + ret); + return ret; + } + + 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"; + + 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); + + if (arizona->pdata.jd_invert) + clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH_GP5H; + else + clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL_GP5H; + } else { + if (arizona->pdata.jd_invert) + clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDH; + else + clamp_mode = ARIZONA_MICD_CLAMP_MODE_JDL; + } + + regmap_update_bits(arizona->regmap, + ARIZONA_MICD_CLAMP_CONTROL, + ARIZONA_MICD_CLAMP_MODE_MASK, clamp_mode); + + 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); + 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); + + return 0; +} + +static struct platform_driver arizona_extcon_driver = { + .driver = { + .name = "arizona-extcon", + }, + .probe = arizona_extcon_probe, + .remove = arizona_extcon_remove, +}; + +module_platform_driver(arizona_extcon_driver); + +MODULE_DESCRIPTION("Arizona Extcon driver"); +MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:extcon-arizona"); |