diff options
Diffstat (limited to 'drivers/extcon')
| -rw-r--r-- | drivers/extcon/Kconfig | 18 | ||||
| -rw-r--r-- | drivers/extcon/Makefile | 2 | ||||
| -rw-r--r-- | drivers/extcon/extcon-arizona.c | 490 | ||||
| -rw-r--r-- | drivers/extcon/extcon-max77693.c | 779 | ||||
| -rw-r--r-- | drivers/extcon/extcon_class.c | 2 | ||||
| -rw-r--r-- | drivers/extcon/extcon_gpio.c | 17 |
6 files changed, 1295 insertions, 13 deletions
diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig index 29c5cf852efc..16716356d1fe 100644 --- a/drivers/extcon/Kconfig +++ b/drivers/extcon/Kconfig @@ -21,6 +21,16 @@ config EXTCON_GPIO Say Y here to enable GPIO based extcon support. Note that GPIO extcon supports single state per extcon instance. +config EXTCON_MAX77693 + tristate "MAX77693 EXTCON Support" + depends on MFD_MAX77693 + select IRQ_DOMAIN + select REGMAP_I2C + help + If you say yes here you get support for the MUIC device of + Maxim MAX77693 PMIC. The MAX77693 MUIC is a USB port accessory + detector and switch. + config EXTCON_MAX8997 tristate "MAX8997 EXTCON Support" depends on MFD_MAX8997 @@ -29,4 +39,12 @@ config EXTCON_MAX8997 Maxim MAX8997 PMIC. The MAX8997 MUIC is a USB port accessory detector and switch. +config EXTCON_ARIZONA + tristate "Wolfson Arizona EXTCON support" + depends on MFD_ARIZONA + help + Say Y here to enable support for external accessory detection + with Wolfson Arizona devices. These are audio CODECs with + advanced audio accessory detection support. + endif # MULTISTATE_SWITCH diff --git a/drivers/extcon/Makefile b/drivers/extcon/Makefile index 86020bdb6da0..88961b332348 100644 --- a/drivers/extcon/Makefile +++ b/drivers/extcon/Makefile @@ -4,4 +4,6 @@ obj-$(CONFIG_EXTCON) += extcon_class.o obj-$(CONFIG_EXTCON_GPIO) += extcon_gpio.o +obj-$(CONFIG_EXTCON_MAX77693) += extcon-max77693.o obj-$(CONFIG_EXTCON_MAX8997) += extcon-max8997.o +obj-$(CONFIG_EXTCON_ARIZONA) += extcon-arizona.o diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c new file mode 100644 index 000000000000..427a289f32a5 --- /dev/null +++ b/drivers/extcon/extcon-arizona.c @@ -0,0 +1,490 @@ +/* + * 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/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/regulator/consumer.h> +#include <linux/extcon.h> + +#include <linux/mfd/arizona/core.h> +#include <linux/mfd/arizona/pdata.h> +#include <linux/mfd/arizona/registers.h> + +struct arizona_extcon_info { + struct device *dev; + struct arizona *arizona; + struct mutex lock; + struct regulator *micvdd; + + int micd_mode; + const struct arizona_micd_config *micd_modes; + int micd_num_modes; + + bool micd_reva; + + bool mic; + bool detecting; + int jack_flips; + + 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 }, +}; + +#define ARIZONA_CABLE_MECHANICAL 0 +#define ARIZONA_CABLE_MICROPHONE 1 +#define ARIZONA_CABLE_HEADPHONE 2 + +static const char *arizona_cable[] = { + "Mechanical", + "Microphone", + "Headphone", + NULL, +}; + +static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode) +{ + struct arizona *arizona = info->arizona; + + 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 void arizona_start_mic(struct arizona_extcon_info *info) +{ + struct arizona *arizona = info->arizona; + bool change; + int ret; + + info->detecting = true; + info->mic = false; + info->jack_flips = 0; + + /* Microphone detection can't use idle mode */ + pm_runtime_get(info->dev); + + 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_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; + bool change; + + regmap_update_bits_check(arizona->regmap, ARIZONA_MIC_DETECT_1, + ARIZONA_MICD_ENA, 0, + &change); + + if (info->micd_reva) { + regmap_write(arizona->regmap, 0x80, 0x3); + regmap_write(arizona->regmap, 0x294, 2); + regmap_write(arizona->regmap, 0x80, 0x0); + } + + if (change) { + regulator_disable(info->micvdd); + pm_runtime_put_autosuspend(info->dev); + } +} + +static irqreturn_t arizona_micdet(int irq, void *data) +{ + struct arizona_extcon_info *info = data; + struct arizona *arizona = info->arizona; + unsigned int val; + int ret; + + mutex_lock(&info->lock); + + ret = regmap_read(arizona->regmap, ARIZONA_MIC_DETECT_3, &val); + if (ret != 0) { + dev_err(arizona->dev, "Failed to read MICDET: %d\n", ret); + return IRQ_NONE; + } + + 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 IRQ_NONE; + } + + /* 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)) { + ret = extcon_update_state(&info->edev, + 1 << ARIZONA_CABLE_MICROPHONE | + 1 << ARIZONA_CABLE_HEADPHONE, + 1 << ARIZONA_CABLE_MICROPHONE | + 1 << ARIZONA_CABLE_HEADPHONE); + + if (ret != 0) + dev_err(arizona->dev, "Headset report failed: %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)) { + info->jack_flips++; + + if (info->jack_flips >= info->micd_num_modes) { + dev_dbg(arizona->dev, "Detected headphone\n"); + info->detecting = false; + arizona_stop_mic(info); + + ret = extcon_set_cable_state_(&info->edev, + ARIZONA_CABLE_HEADPHONE, + true); + if (ret != 0) + dev_err(arizona->dev, + "Headphone report failed: %d\n", + ret); + } 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, the + * button reporting is stubbed out for now. + */ + if (val & 0x3fc) { + if (info->mic) { + dev_dbg(arizona->dev, "Mic button detected\n"); + + } else if (info->detecting) { + dev_dbg(arizona->dev, "Headphone detected\n"); + info->detecting = false; + arizona_stop_mic(info); + + ret = extcon_set_cable_state_(&info->edev, + ARIZONA_CABLE_HEADPHONE, + true); + if (ret != 0) + dev_err(arizona->dev, + "Headphone report failed: %d\n", + ret); + } else { + dev_warn(arizona->dev, "Button with no mic: %x\n", + val); + } + } else { + dev_dbg(arizona->dev, "Mic button released\n"); + } + +handled: + pm_runtime_mark_last_busy(info->dev); + mutex_unlock(&info->lock); + + return IRQ_HANDLED; +} + +static irqreturn_t arizona_jackdet(int irq, void *data) +{ + struct arizona_extcon_info *info = data; + struct arizona *arizona = info->arizona; + unsigned int val; + int ret; + + pm_runtime_get_sync(info->dev); + + mutex_lock(&info->lock); + + 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; + } + + if (val & ARIZONA_JD1_STS) { + 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); + + arizona_start_mic(info); + } else { + dev_dbg(arizona->dev, "Detected jack removal\n"); + + arizona_stop_mic(info); + + ret = extcon_update_state(&info->edev, 0xffffffff, 0); + if (ret != 0) + dev_err(arizona->dev, "Removal report failed: %d\n", + ret); + } + + mutex_unlock(&info->lock); + + pm_runtime_mark_last_busy(info->dev); + pm_runtime_put_autosuspend(info->dev); + + return IRQ_HANDLED; +} + +static int __devinit 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; + int ret, mode; + + 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->detecting = true; + platform_set_drvdata(pdev, info); + + switch (arizona->type) { + case WM5102: + switch (arizona->rev) { + case 0: + info->micd_reva = true; + break; + default: + 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_regster() failed: %d\n", + ret); + goto err; + } + + 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; + } + } + + arizona_extcon_set_mode(info, 0); + + pm_runtime_enable(&pdev->dev); + pm_runtime_idle(&pdev->dev); + pm_runtime_get_sync(&pdev->dev); + + ret = arizona_request_irq(arizona, ARIZONA_IRQ_JD_RISE, + "JACKDET rise", arizona_jackdet, info); + if (ret != 0) { + dev_err(&pdev->dev, "Failed to get JACKDET rise IRQ: %d\n", + ret); + goto err_register; + } + + ret = arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_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, ARIZONA_IRQ_JD_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, ARIZONA_IRQ_JD_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; + } + + regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1, + ARIZONA_MICD_BIAS_STARTTIME_MASK | + ARIZONA_MICD_RATE_MASK, + 7 << ARIZONA_MICD_BIAS_STARTTIME_SHIFT | + 8 << ARIZONA_MICD_RATE_SHIFT); + + 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); + + pm_runtime_put(&pdev->dev); + + return 0; + +err_fall_wake: + arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_FALL, 0); +err_fall: + arizona_free_irq(arizona, ARIZONA_IRQ_JD_FALL, info); +err_rise_wake: + arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_RISE, 0); +err_rise: + arizona_free_irq(arizona, ARIZONA_IRQ_JD_RISE, info); +err_register: + pm_runtime_disable(&pdev->dev); + extcon_dev_unregister(&info->edev); +err: + return ret; +} + +static int __devexit arizona_extcon_remove(struct platform_device *pdev) +{ + struct arizona_extcon_info *info = platform_get_drvdata(pdev); + struct arizona *arizona = info->arizona; + + pm_runtime_disable(&pdev->dev); + + arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_RISE, 0); + arizona_set_irq_wake(arizona, ARIZONA_IRQ_JD_FALL, 0); + arizona_free_irq(arizona, ARIZONA_IRQ_MICDET, info); + arizona_free_irq(arizona, ARIZONA_IRQ_JD_RISE, info); + arizona_free_irq(arizona, ARIZONA_IRQ_JD_FALL, info); + 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 = __devexit_p(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"); diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c new file mode 100644 index 000000000000..920a609b2c35 --- /dev/null +++ b/drivers/extcon/extcon-max77693.c @@ -0,0 +1,779 @@ +/* + * extcon-max77693.c - MAX77693 extcon driver to support MAX77693 MUIC + * + * Copyright (C) 2012 Samsung Electrnoics + * Chanwoo Choi <cw00.choi@samsung.com> + * + * 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/platform_device.h> +#include <linux/mfd/max77693.h> +#include <linux/mfd/max77693-private.h> +#include <linux/extcon.h> +#include <linux/regmap.h> +#include <linux/irqdomain.h> + +#define DEV_NAME "max77693-muic" + +/* MAX77693 MUIC - STATUS1~3 Register */ +#define STATUS1_ADC_SHIFT (0) +#define STATUS1_ADCLOW_SHIFT (5) +#define STATUS1_ADCERR_SHIFT (6) +#define STATUS1_ADC1K_SHIFT (7) +#define STATUS1_ADC_MASK (0x1f << STATUS1_ADC_SHIFT) +#define STATUS1_ADCLOW_MASK (0x1 << STATUS1_ADCLOW_SHIFT) +#define STATUS1_ADCERR_MASK (0x1 << STATUS1_ADCERR_SHIFT) +#define STATUS1_ADC1K_MASK (0x1 << STATUS1_ADC1K_SHIFT) + +#define STATUS2_CHGTYP_SHIFT (0) +#define STATUS2_CHGDETRUN_SHIFT (3) +#define STATUS2_DCDTMR_SHIFT (4) +#define STATUS2_DXOVP_SHIFT (5) +#define STATUS2_VBVOLT_SHIFT (6) +#define STATUS2_VIDRM_SHIFT (7) +#define STATUS2_CHGTYP_MASK (0x7 << STATUS2_CHGTYP_SHIFT) +#define STATUS2_CHGDETRUN_MASK (0x1 << STATUS2_CHGDETRUN_SHIFT) +#define STATUS2_DCDTMR_MASK (0x1 << STATUS2_DCDTMR_SHIFT) +#define STATUS2_DXOVP_MASK (0x1 << STATUS2_DXOVP_SHIFT) +#define STATUS2_VBVOLT_MASK (0x1 << STATUS2_VBVOLT_SHIFT) +#define STATUS2_VIDRM_MASK (0x1 << STATUS2_VIDRM_SHIFT) + +#define STATUS3_OVP_SHIFT (2) +#define STATUS3_OVP_MASK (0x1 << STATUS3_OVP_SHIFT) + +/* MAX77693 CDETCTRL1~2 register */ +#define CDETCTRL1_CHGDETEN_SHIFT (0) +#define CDETCTRL1_CHGTYPMAN_SHIFT (1) +#define CDETCTRL1_DCDEN_SHIFT (2) +#define CDETCTRL1_DCD2SCT_SHIFT (3) +#define CDETCTRL1_CDDELAY_SHIFT (4) +#define CDETCTRL1_DCDCPL_SHIFT (5) +#define CDETCTRL1_CDPDET_SHIFT (7) +#define CDETCTRL1_CHGDETEN_MASK (0x1 << CDETCTRL1_CHGDETEN_SHIFT) +#define CDETCTRL1_CHGTYPMAN_MASK (0x1 << CDETCTRL1_CHGTYPMAN_SHIFT) +#define CDETCTRL1_DCDEN_MASK (0x1 << CDETCTRL1_DCDEN_SHIFT) +#define CDETCTRL1_DCD2SCT_MASK (0x1 << CDETCTRL1_DCD2SCT_SHIFT) +#define CDETCTRL1_CDDELAY_MASK (0x1 << CDETCTRL1_CDDELAY_SHIFT) +#define CDETCTRL1_DCDCPL_MASK (0x1 << CDETCTRL1_DCDCPL_SHIFT) +#define CDETCTRL1_CDPDET_MASK (0x1 << CDETCTRL1_CDPDET_SHIFT) + +#define CDETCTRL2_VIDRMEN_SHIFT (1) +#define CDETCTRL2_DXOVPEN_SHIFT (3) +#define CDETCTRL2_VIDRMEN_MASK (0x1 << CDETCTRL2_VIDRMEN_SHIFT) +#define CDETCTRL2_DXOVPEN_MASK (0x1 << CDETCTRL2_DXOVPEN_SHIFT) + +/* MAX77693 MUIC - CONTROL1~3 register */ +#define COMN1SW_SHIFT (0) +#define COMP2SW_SHIFT (3) +#define COMN1SW_MASK (0x7 << COMN1SW_SHIFT) +#define COMP2SW_MASK (0x7 << COMP2SW_SHIFT) +#define COMP_SW_MASK (COMP2SW_MASK | COMN1SW_MASK) +#define CONTROL1_SW_USB ((1 << COMP2SW_SHIFT) \ + | (1 << COMN1SW_SHIFT)) +#define CONTROL1_SW_AUDIO ((2 << COMP2SW_SHIFT) \ + | (2 << COMN1SW_SHIFT)) +#define CONTROL1_SW_UART ((3 << COMP2SW_SHIFT) \ + | (3 << COMN1SW_SHIFT)) +#define CONTROL1_SW_OPEN ((0 << COMP2SW_SHIFT) \ + | (0 << COMN1SW_SHIFT)) + +#define CONTROL2_LOWPWR_SHIFT (0) +#define CONTROL2_ADCEN_SHIFT (1) +#define CONTROL2_CPEN_SHIFT (2) +#define CONTROL2_SFOUTASRT_SHIFT (3) +#define CONTROL2_SFOUTORD_SHIFT (4) +#define CONTROL2_ACCDET_SHIFT (5) +#define CONTROL2_USBCPINT_SHIFT (6) +#define CONTROL2_RCPS_SHIFT (7) +#define CONTROL2_LOWPWR_MASK (0x1 << CONTROL2_LOWPWR_SHIFT) +#define CONTROL2_ADCEN_MASK (0x1 << CONTROL2_ADCEN_SHIFT) +#define CONTROL2_CPEN_MASK (0x1 << CONTROL2_CPEN_SHIFT) +#define CONTROL2_SFOUTASRT_MASK (0x1 << CONTROL2_SFOUTASRT_SHIFT) +#define CONTROL2_SFOUTORD_MASK (0x1 << CONTROL2_SFOUTORD_SHIFT) +#define CONTROL2_ACCDET_MASK (0x1 << CONTROL2_ACCDET_SHIFT) +#define CONTROL2_USBCPINT_MASK (0x1 << CONTROL2_USBCPINT_SHIFT) +#define CONTROL2_RCPS_MASK (0x1 << CONTROL2_RCPS_SHIFT) + +#define CONTROL3_JIGSET_SHIFT (0) +#define CONTROL3_BTLDSET_SHIFT (2) +#define CONTROL3_ADCDBSET_SHIFT (4) +#define CONTROL3_JIGSET_MASK (0x3 << CONTROL3_JIGSET_SHIFT) +#define CONTROL3_BTLDSET_MASK (0x3 << CONTROL3_BTLDSET_SHIFT) +#define CONTROL3_ADCDBSET_MASK (0x3 << CONTROL3_ADCDBSET_SHIFT) + +enum max77693_muic_adc_debounce_time { + ADC_DEBOUNCE_TIME_5MS = 0, + ADC_DEBOUNCE_TIME_10MS, + ADC_DEBOUNCE_TIME_25MS, + ADC_DEBOUNCE_TIME_38_62MS, +}; + +struct max77693_muic_info { + struct device *dev; + struct max77693_dev *max77693; + struct extcon_dev *edev; + int prev_adc; + int prev_adc_gnd; + int prev_chg_type; + u8 status[2]; + + int irq; + struct work_struct irq_work; + struct mutex mutex; +}; + +enum max77693_muic_charger_type { + MAX77693_CHARGER_TYPE_NONE = 0, + MAX77693_CHARGER_TYPE_USB, + MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT, + MAX77693_CHARGER_TYPE_DEDICATED_CHG, + MAX77693_CHARGER_TYPE_APPLE_500MA, + MAX77693_CHARGER_TYPE_APPLE_1A_2A, + MAX77693_CHARGER_TYPE_DEAD_BATTERY = 7, +}; + +/** + * struct max77693_muic_irq + * @irq: the index of irq list of MUIC device. + * @name: the name of irq. + * @virq: the virtual irq to use irq domain + */ +struct max77693_muic_irq { + unsigned int irq; + const char *name; + unsigned int virq; +}; + +static struct max77693_muic_irq muic_irqs[] = { + { MAX77693_MUIC_IRQ_INT1_ADC, "muic-ADC" }, + { MAX77693_MUIC_IRQ_INT1_ADC_LOW, "muic-ADCLOW" }, + { MAX77693_MUIC_IRQ_INT1_ADC_ERR, "muic-ADCError" }, + { MAX77693_MUIC_IRQ_INT1_ADC1K, "muic-ADC1K" }, + { MAX77693_MUIC_IRQ_INT2_CHGTYP, "muic-CHGTYP" }, + { MAX77693_MUIC_IRQ_INT2_CHGDETREUN, "muic-CHGDETREUN" }, + { MAX77693_MUIC_IRQ_INT2_DCDTMR, "muic-DCDTMR" }, + { MAX77693_MUIC_IRQ_INT2_DXOVP, "muic-DXOVP" }, + { MAX77693_MUIC_IRQ_INT2_VBVOLT, "muic-VBVOLT" }, + { MAX77693_MUIC_IRQ_INT2_VIDRM, "muic-VIDRM" }, + { MAX77693_MUIC_IRQ_INT3_EOC, "muic-EOC" }, + { MAX77693_MUIC_IRQ_INT3_CGMBC, "muic-CGMBC" }, + { MAX77693_MUIC_IRQ_INT3_OVP, "muic-OVP" }, + { MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR, "muic-MBCCHG_ERR" }, + { MAX77693_MUIC_IRQ_INT3_CHG_ENABLED, "muic-CHG_ENABLED" }, + { MAX77693_MUIC_IRQ_INT3_BAT_DET, "muic-BAT_DET" }, +}; + +/* Define supported accessory type */ +enum max77693_muic_acc_type { + MAX77693_MUIC_ADC_GROUND = 0x0, + MAX77693_MUIC_ADC_SEND_END_BUTTON, + MAX77693_MUIC_ADC_REMOTE_S1_BUTTON, + MAX77693_MUIC_ADC_REMOTE_S2_BUTTON, + MAX77693_MUIC_ADC_REMOTE_S3_BUTTON, + MAX77693_MUIC_ADC_REMOTE_S4_BUTTON, + MAX77693_MUIC_ADC_REMOTE_S5_BUTTON, + MAX77693_MUIC_ADC_REMOTE_S6_BUTTON, + MAX77693_MUIC_ADC_REMOTE_S7_BUTTON, + MAX77693_MUIC_ADC_REMOTE_S8_BUTTON, + MAX77693_MUIC_ADC_REMOTE_S9_BUTTON, + MAX77693_MUIC_ADC_REMOTE_S10_BUTTON, + MAX77693_MUIC_ADC_REMOTE_S11_BUTTON, + MAX77693_MUIC_ADC_REMOTE_S12_BUTTON, + MAX77693_MUIC_ADC_RESERVED_ACC_1, + MAX77693_MUIC_ADC_RESERVED_ACC_2, + MAX77693_MUIC_ADC_RESERVED_ACC_3, + MAX77693_MUIC_ADC_RESERVED_ACC_4, + MAX77693_MUIC_ADC_RESERVED_ACC_5, + MAX77693_MUIC_ADC_CEA936_AUDIO, + MAX77693_MUIC_ADC_PHONE_POWERED_DEV, + MAX77693_MUIC_ADC_TTY_CONVERTER, + MAX77693_MUIC_ADC_UART_CABLE, + MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG, + MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF, + MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON, + MAX77693_MUIC_ADC_AV_CABLE_NOLOAD, + MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG, + MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF, + MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON, + MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE, + MAX77693_MUIC_ADC_OPEN, + + /* The below accessories have same ADC value so ADCLow and + ADC1K bit is used to separate specific accessory */ + MAX77693_MUIC_GND_USB_OTG = 0x100, /* ADC:0x0, ADCLow:0, ADC1K:0 */ + MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* ADC:0x0, ADCLow:1, ADC1K:0 */ + MAX77693_MUIC_GND_MHL_CABLE = 0x103, /* ADC:0x0, ADCLow:1, ADC1K:1 */ +}; + +/* MAX77693 MUIC device support below list of accessories(external connector) */ +const char *max77693_extcon_cable[] = { + [0] = "USB", + [1] = "USB-Host", + [2] = "TA", + [3] = "Fast-charger", + [4] = "Slow-charger", + [5] = "Charge-downstream", + [6] = "MHL", + [7] = "Audio-video-load", + [8] = "Audio-video-noload", + [9] = "JIG", + + NULL, +}; + +static int max77693_muic_set_debounce_time(struct max77693_muic_info *info, + enum max77693_muic_adc_debounce_time time) +{ + int ret = 0; + u8 ctrl3; + + switch (time) { + case ADC_DEBOUNCE_TIME_5MS: + case ADC_DEBOUNCE_TIME_10MS: + case ADC_DEBOUNCE_TIME_25MS: + case ADC_DEBOUNCE_TIME_38_62MS: + ret = max77693_read_reg(info->max77693->regmap_muic, + MAX77693_MUIC_REG_CTRL3, &ctrl3); + ctrl3 &= ~CONTROL3_ADCDBSET_MASK; + ctrl3 |= (time << CONTROL3_ADCDBSET_SHIFT); + + ret = max77693_write_reg(info->max77693->regmap_muic, + MAX77693_MUIC_REG_CTRL3, ctrl3); + if (ret) { + dev_err(info->dev, "failed to set ADC debounce time\n"); + ret = -EINVAL; + } + break; + default: + dev_err(info->dev, "invalid ADC debounce time\n"); + ret = -EINVAL; + break; + } + + return ret; +}; + +static int max77693_muic_set_path(struct max77693_muic_info *info, + u8 val, bool attached) +{ + int ret = 0; + u8 ctrl1, ctrl2 = 0; + + if (attached) + ctrl1 = val; + else + ctrl1 = CONTROL1_SW_OPEN; + + ret = max77693_update_reg(info->max77693->regmap_muic, + MAX77693_MUIC_REG_CTRL1, ctrl1, COMP_SW_MASK); + if (ret < 0) { + dev_err(info->dev, "failed to update MUIC register\n"); + goto out; + } + + if (attached) + ctrl2 |= CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */ + else + ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */ + + ret = max77693_update_reg(info->max77693->regmap_muic, + MAX77693_MUIC_REG_CTRL2, ctrl2, + CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK); + if (ret < 0) { + dev_err(info->dev, "failed to update MUIC register\n"); + goto out; + } + + dev_info(info->dev, + "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n", + ctrl1, ctrl2, attached ? "attached" : "detached"); +out: + return ret; +} + +static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info, + bool attached) +{ + int ret = 0; + int type; + int adc, adc1k, adclow; + + if (attached) { + adc = info->status[0] & STATUS1_ADC_MASK; + adclow = info->status[0] & STATUS1_ADCLOW_MASK; + adclow >>= STATUS1_ADCLOW_SHIFT; + adc1k = info->status[0] & STATUS1_ADC1K_MASK; + adc1k >>= STATUS1_ADC1K_SHIFT; + + /** + * [0x1][ADCLow][ADC1K] + * [0x1 0 0 ] : USB_OTG + * [0x1 1 0 ] : Audio Video Cable with load + * [0x1 1 1 ] : MHL + */ + type = ((0x1 << 8) | (adclow << 1) | adc1k); + + /* Store previous ADC value to handle accessory + when accessory will be detached */ + info->prev_adc = adc; + info->prev_adc_gnd = type; + } else + type = info->prev_adc_gnd; + + switch (type) { + case MAX77693_MUIC_GND_USB_OTG: + /* USB_OTG */ + ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached); + if (ret < 0) + goto out; + extcon_set_cable_state(info->edev, "USB-Host", attached); + break; + case MAX77693_MUIC_GND_AV_CABLE_LOAD: + /* Audio Video Cable with load */ + ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); + if (ret < 0) + goto out; + extcon_set_cable_state(info->edev, + "Audio-video-load", attached); + break; + case MAX77693_MUIC_GND_MHL_CABLE: + /* MHL */ + extcon_set_cable_state(info->edev, "MHL", attached); + break; + default: + dev_err(info->dev, "faild to detect %s accessory\n", + attached ? "attached" : "detached"); + dev_err(info->dev, "- adc:0x%x, adclow:0x%x, adc1k:0x%x\n", + adc, adclow, adc1k); + ret = -EINVAL; + break; + } + +out: + return ret; +} + +static int max77693_muic_adc_handler(struct max77693_muic_info *info, + int curr_adc, bool attached) +{ + int ret = 0; + int adc; + + if (attached) { + /* Store ADC value to handle accessory + when accessory will be detached */ + info->prev_adc = curr_adc; + adc = curr_adc; + } else + adc = info->prev_adc; + + dev_info(info->dev, + "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n", + attached ? "attached" : "detached", curr_adc, info->prev_adc); + + switch (adc) { + case MAX77693_MUIC_ADC_GROUND: + /* USB_OTG/MHL/Audio */ + max77693_muic_adc_ground_handler(info, attached); + break; + case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: + case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: + /* USB */ + ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached); + if (ret < 0) + goto out; + extcon_set_cable_state(info->edev, "USB", attached); + break; + case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: + case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: + /* JIG */ + ret = max77693_muic_set_path(info, CONTROL1_SW_UART, attached); + if (ret < 0) + goto out; + extcon_set_cable_state(info->edev, "JIG", attached); + break; + case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: + /* Audio Video cable with no-load */ + ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); + if (ret < 0) + goto out; + extcon_set_cable_state(info->edev, + "Audio-video-noload", attached); + break; + case MAX77693_MUIC_ADC_SEND_END_BUTTON: + case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON: + case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON: + case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: + case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON: + case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON: + case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON: + case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: + case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON: + case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: + case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: + case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON: + case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: + case MAX77693_MUIC_ADC_RESERVED_ACC_1: + case MAX77693_MUIC_ADC_RESERVED_ACC_2: + case MAX77693_MUIC_ADC_RESERVED_ACC_3: + case MAX77693_MUIC_ADC_RESERVED_ACC_4: + case MAX77693_MUIC_ADC_RESERVED_ACC_5: + case MAX77693_MUIC_ADC_CEA936_AUDIO: + case MAX77693_MUIC_ADC_PHONE_POWERED_DEV: + case MAX77693_MUIC_ADC_TTY_CONVERTER: + case MAX77693_MUIC_ADC_UART_CABLE: + case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG: + case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: + case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG: + /* This accessory isn't used in general case if it is specially + needed to detect additional accessory, should implement + proper operation when this accessory is attached/detached. */ + dev_info(info->dev, + "accessory is %s but it isn't used (adc:0x%x)\n", + attached ? "attached" : "detached", adc); + goto out; + default: + dev_err(info->dev, + "failed to detect %s accessory (adc:0x%x)\n", + attached ? "attached" : "detached", adc); + ret = -EINVAL; + goto out; + } + +out: + return ret; +} + +static int max77693_muic_chg_handler(struct max77693_muic_info *info, + int curr_chg_type, bool attached) +{ + int ret = 0; + int chg_type; + + if (attached) { + /* Store previous charger type to control + when charger accessory will be detached */ + info->prev_chg_type = curr_chg_type; + chg_type = curr_chg_type; + } else + chg_type = info->prev_chg_type; + + dev_info(info->dev, + "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n", + attached ? "attached" : "detached", + curr_chg_type, info->prev_chg_type); + + switch (chg_type) { + case MAX77693_CHARGER_TYPE_USB: + ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached); + if (ret < 0) + goto out; + extcon_set_cable_state(info->edev, "USB", attached); + break; + case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT: + extcon_set_cable_state(info->edev, + "Charge-downstream", attached); + break; + case MAX77693_CHARGER_TYPE_DEDICATED_CHG: + extcon_set_cable_state(info->edev, "TA", attached); + break; + case MAX77693_CHARGER_TYPE_APPLE_500MA: + extcon_set_cable_state(info->edev, "Slow-charger", attached); + break; + case MAX77693_CHARGER_TYPE_APPLE_1A_2A: + extcon_set_cable_state(info->edev, "Fast-charger", attached); + break; + case MAX77693_CHARGER_TYPE_DEAD_BATTERY: + break; + default: + dev_err(info->dev, + "failed to detect %s accessory (chg_type:0x%x)\n", + attached ? "attached" : "detached", chg_type); + ret = -EINVAL; + goto out; + } + +out: + return ret; +} + +static void max77693_muic_irq_work(struct work_struct *work) +{ + struct max77693_muic_info *info = container_of(work, + struct max77693_muic_info, irq_work); + int curr_adc, curr_chg_type; + int irq_type = -1; + int i, ret = 0; + bool attached = true; + + if (!info->edev) + return; + + mutex_lock(&info->mutex); + + for (i = 0 ; i < ARRAY_SIZE(muic_irqs) ; i++) + if (info->irq == muic_irqs[i].virq) + irq_type = muic_irqs[i].irq; + + ret = max77693_bulk_read(info->max77693->regmap_muic, + MAX77693_MUIC_REG_STATUS1, 2, info->status); + if (ret) { + dev_err(info->dev, "failed to read MUIC register\n"); + mutex_unlock(&info->mutex); + return; + } + + switch (irq_type) { + case MAX77693_MUIC_IRQ_INT1_ADC: + case MAX77693_MUIC_IRQ_INT1_ADC_LOW: + case MAX77693_MUIC_IRQ_INT1_ADC_ERR: + case MAX77693_MUIC_IRQ_INT1_ADC1K: + /* Handle all of accessory except for + type of charger accessory */ + curr_adc = info->status[0] & STATUS1_ADC_MASK; + curr_adc >>= STATUS1_ADC_SHIFT; + + /* Check accossory state which is either detached or attached */ + if (curr_adc == MAX77693_MUIC_ADC_OPEN) + attached = false; + + ret = max77693_muic_adc_handler(info, curr_adc, attached); + break; + case MAX77693_MUIC_IRQ_INT2_CHGTYP: + case MAX77693_MUIC_IRQ_INT2_CHGDETREUN: + case MAX77693_MUIC_IRQ_INT2_DCDTMR: + case MAX77693_MUIC_IRQ_INT2_DXOVP: + case MAX77693_MUIC_IRQ_INT2_VBVOLT: + case MAX77693_MUIC_IRQ_INT2_VIDRM: + /* Handle charger accessory */ + curr_chg_type = info->status[1] & STATUS2_CHGTYP_MASK; + curr_chg_type >>= STATUS2_CHGTYP_SHIFT; + + /* Check charger accossory state which + is either detached or attached */ + if (curr_chg_type == MAX77693_CHARGER_TYPE_NONE) + attached = false; + + ret = max77693_muic_chg_handler(info, curr_chg_type, attached); + break; + case MAX77693_MUIC_IRQ_INT3_EOC: + case MAX77693_MUIC_IRQ_INT3_CGMBC: + case MAX77693_MUIC_IRQ_INT3_OVP: + case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR: + case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED: + case MAX77693_MUIC_IRQ_INT3_BAT_DET: + break; + default: + dev_err(info->dev, "muic interrupt: irq %d occurred\n", + irq_type); + break; + } + + if (ret < 0) + dev_err(info->dev, "failed to handle MUIC interrupt\n"); + + mutex_unlock(&info->mutex); + + return; +} + +static irqreturn_t max77693_muic_irq_handler(int irq, void *data) +{ + struct max77693_muic_info *info = data; + + info->irq = irq; + schedule_work(&info->irq_work); + + return IRQ_HANDLED; +} + +static struct regmap_config max77693_muic_regmap_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +static int max77693_muic_detect_accessory(struct max77693_muic_info *info) +{ + int ret = 0; + int adc, chg_type; + + mutex_lock(&info->mutex); + + /* Read STATUSx register to detect accessory */ + ret = max77693_bulk_read(info->max77693->regmap_muic, + MAX77693_MUIC_REG_STATUS1, 2, info->status); + if (ret) { + dev_err(info->dev, "failed to read MUIC register\n"); + mutex_unlock(&info->mutex); + return -EINVAL; + } + + adc = info->status[0] & STATUS1_ADC_MASK; + adc >>= STATUS1_ADC_SHIFT; + + if (adc != MAX77693_MUIC_ADC_OPEN) { + dev_info(info->dev, + "external connector is attached (adc:0x%02x)\n", adc); + + ret = max77693_muic_adc_handler(info, adc, true); + if (ret < 0) + dev_err(info->dev, "failed to detect accessory\n"); + goto out; + } + + chg_type = info->status[1] & STATUS2_CHGTYP_MASK; + chg_type >>= STATUS2_CHGTYP_SHIFT; + + if (chg_type != MAX77693_CHARGER_TYPE_NONE) { + dev_info(info->dev, + "external connector is attached (chg_type:0x%x)\n", + chg_type); + + max77693_muic_chg_handler(info, chg_type, true); + if (ret < 0) + dev_err(info->dev, "failed to detect charger accessory\n"); + } + +out: + mutex_unlock(&info->mutex); + return ret; +} + +static int __devinit max77693_muic_probe(struct platform_device *pdev) +{ + struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent); + struct max77693_muic_info *info; + int ret, i; + u8 id; + + info = kzalloc(sizeof(struct max77693_muic_info), GFP_KERNEL); + if (!info) { + dev_err(&pdev->dev, "failed to allocate memory\n"); + ret = -ENOMEM; + goto err_kfree; + } + info->dev = &pdev->dev; + info->max77693 = max77693; + info->max77693->regmap_muic = regmap_init_i2c(info->max77693->muic, + &max77693_muic_regmap_config); + if (IS_ERR(info->max77693->regmap_muic)) { + ret = PTR_ERR(info->max77693->regmap_muic); + dev_err(max77693->dev, + "failed to allocate register map: %d\n", ret); + goto err_regmap; + } + platform_set_drvdata(pdev, info); + mutex_init(&info->mutex); + + INIT_WORK(&info->irq_work, max77693_muic_irq_work); + + /* Support irq domain for MAX77693 MUIC device */ + for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) { + struct max77693_muic_irq *muic_irq = &muic_irqs[i]; + int virq = 0; + + virq = irq_create_mapping(max77693->irq_domain, muic_irq->irq); + if (!virq) + goto err_irq; + muic_irq->virq = virq; + + ret = request_threaded_irq(virq, NULL, + max77693_muic_irq_handler, + 0, muic_irq->name, info); + if (ret) { + dev_err(&pdev->dev, + "failed: irq request (IRQ: %d," + " error :%d)\n", + muic_irq->irq, ret); + + for (i = i - 1; i >= 0; i--) + free_irq(muic_irq->virq, info); + goto err_irq; + } + } + + /* Initialize extcon device */ + info->edev = kzalloc(sizeof(struct extcon_dev), GFP_KERNEL); + if (!info->edev) { + dev_err(&pdev->dev, "failed to allocate memory for extcon\n"); + ret = -ENOMEM; + goto err_irq; + } + info->edev->name = DEV_NAME; + info->edev->supported_cable = max77693_extcon_cable; + ret = extcon_dev_register(info->edev, NULL); + if (ret) { + dev_err(&pdev->dev, "failed to register extcon device\n"); + goto err_extcon; + } + + /* Check revision number of MUIC device*/ + ret = max77693_read_reg(info->max77693->regmap_muic, + MAX77693_MUIC_REG_ID, &id); + if (ret < 0) { + dev_err(&pdev->dev, "failed to read revision number\n"); + goto err_extcon; + } + dev_info(info->dev, "device ID : 0x%x\n", id); + + /* Set ADC debounce time */ + max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS); + + /* Detect accessory on boot */ + max77693_muic_detect_accessory(info); + + return ret; + +err_extcon: + kfree(info->edev); +err_irq: +err_regmap: + kfree(info); +err_kfree: + return ret; +} + +static int __devexit max77693_muic_remove(struct platform_device *pdev) +{ + struct max77693_muic_info *info = platform_get_drvdata(pdev); + int i; + + for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) + free_irq(muic_irqs[i].virq, info); + cancel_work_sync(&info->irq_work); + extcon_dev_unregister(info->edev); + kfree(info); + + return 0; +} + +static struct platform_driver max77693_muic_driver = { + .driver = { + .name = DEV_NAME, + .owner = THIS_MODULE, + }, + .probe = max77693_muic_probe, + .remove = __devexit_p(max77693_muic_remove), +}; + +module_platform_driver(max77693_muic_driver); + +MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver"); +MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:extcon-max77693"); diff --git a/drivers/extcon/extcon_class.c b/drivers/extcon/extcon_class.c index 159aeb07b3ba..f6419f9db76c 100644 --- a/drivers/extcon/extcon_class.c +++ b/drivers/extcon/extcon_class.c @@ -65,7 +65,7 @@ const char *extcon_cable_name[] = { NULL, }; -struct class *extcon_class; +static struct class *extcon_class; #if defined(CONFIG_ANDROID) static struct class_compat *switch_class; #endif /* CONFIG_ANDROID */ diff --git a/drivers/extcon/extcon_gpio.c b/drivers/extcon/extcon_gpio.c index 8a0dcc11c7c7..fe3db45fa83c 100644 --- a/drivers/extcon/extcon_gpio.c +++ b/drivers/extcon/extcon_gpio.c @@ -105,25 +105,25 @@ static int __devinit gpio_extcon_probe(struct platform_device *pdev) ret = extcon_dev_register(&extcon_data->edev, &pdev->dev); if (ret < 0) - goto err_extcon_dev_register; + return ret; ret = gpio_request_one(extcon_data->gpio, GPIOF_DIR_IN, pdev->name); if (ret < 0) - goto err_request_gpio; + goto err; INIT_DELAYED_WORK(&extcon_data->work, gpio_extcon_work); extcon_data->irq = gpio_to_irq(extcon_data->gpio); if (extcon_data->irq < 0) { ret = extcon_data->irq; - goto err_detect_irq_num_failed; + goto err; } ret = request_any_context_irq(extcon_data->irq, gpio_irq_handler, pdata->irq_flags, pdev->name, extcon_data); if (ret < 0) - goto err_request_irq; + goto err; platform_set_drvdata(pdev, extcon_data); /* Perform initial detection */ @@ -131,13 +131,8 @@ static int __devinit gpio_extcon_probe(struct platform_device *pdev) return 0; -err_request_irq: -err_detect_irq_num_failed: - gpio_free(extcon_data->gpio); -err_request_gpio: +err: extcon_dev_unregister(&extcon_data->edev); -err_extcon_dev_register: - devm_kfree(&pdev->dev, extcon_data); return ret; } @@ -148,9 +143,7 @@ static int __devexit gpio_extcon_remove(struct platform_device *pdev) cancel_delayed_work_sync(&extcon_data->work); free_irq(extcon_data->irq, extcon_data); - gpio_free(extcon_data->gpio); extcon_dev_unregister(&extcon_data->edev); - devm_kfree(&pdev->dev, extcon_data); return 0; } |