From f2c32a882d2c1cde6fc552a5a3d34b4c1330edb8 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sun, 24 Jun 2012 12:09:45 +0100 Subject: Extcon: Arizona: Add driver for Wolfson Arizona class devices Most Wolfson Arizona class audio hub CODECs include a flexible ultra low power accessory detection subsystem. This driver exposes initial support for this subsystem via the Extcon framework, implementing support for ultra low power detection of headphone and headset with the ability to detect the polarity of a headset. The functionality of the devices is much richer and more flexible than the current driver, future patches will extend the features of the driver to more fully exploit this. Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- drivers/extcon/Kconfig | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/extcon/Kconfig') diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig index 29c5cf852efc..bb385ac629a8 100644 --- a/drivers/extcon/Kconfig +++ b/drivers/extcon/Kconfig @@ -29,4 +29,12 @@ 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 -- cgit v1.2.3 From dca1a71e4108a0a9051a653d885297e9d1cc656c Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Mon, 2 Jul 2012 09:03:00 +0900 Subject: extcon: Add support irq domain for MAX8997 muic This patch add support irq domain for Maxim MAX8997 muic instead of irq_base in platform data and max8997 driver private data are instead. It is tested on TRATS board. Cc: Greg Kroah-Hartman Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham Signed-off-by: Kyungmin Park Signed-off-by: Samuel Ortiz --- drivers/extcon/Kconfig | 2 +- drivers/extcon/extcon-max8997.c | 29 ++++++++++++++++++----------- 2 files changed, 19 insertions(+), 12 deletions(-) (limited to 'drivers/extcon/Kconfig') diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig index 29c5cf852efc..bf6b2eae5751 100644 --- a/drivers/extcon/Kconfig +++ b/drivers/extcon/Kconfig @@ -23,7 +23,7 @@ config EXTCON_GPIO config EXTCON_MAX8997 tristate "MAX8997 EXTCON Support" - depends on MFD_MAX8997 + depends on MFD_MAX8997 && IRQ_DOMAIN help If you say yes here you get support for the MUIC device of Maxim MAX8997 PMIC. The MAX8997 MUIC is a USB port accessory diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c index a4ed30bd9a41..ef9090a4271d 100644 --- a/drivers/extcon/extcon-max8997.c +++ b/drivers/extcon/extcon-max8997.c @@ -26,6 +26,7 @@ #include #include #include +#include #define DEV_NAME "max8997-muic" @@ -77,6 +78,7 @@ struct max8997_muic_irq { unsigned int irq; const char *name; + unsigned int virq; }; static struct max8997_muic_irq muic_irqs[] = { @@ -343,12 +345,10 @@ static void max8997_muic_irq_work(struct work_struct *work) { struct max8997_muic_info *info = container_of(work, struct max8997_muic_info, irq_work); - struct max8997_dev *max8997 = i2c_get_clientdata(info->muic); u8 status[2]; u8 adc, chg_type; - - int irq_type = info->irq - max8997->irq_base; - int ret; + int irq_type = 0; + int i, ret; mutex_lock(&info->mutex); @@ -363,6 +363,10 @@ static void max8997_muic_irq_work(struct work_struct *work) dev_dbg(info->dev, "%s: STATUS1:0x%x, 2:0x%x\n", __func__, status[0], status[1]); + for (i = 0 ; i < ARRAY_SIZE(muic_irqs) ; i++) + if (info->irq == muic_irqs[i].virq) + irq_type = muic_irqs[i].irq; + switch (irq_type) { case MAX8997_MUICIRQ_ADC: adc = status[0] & STATUS1_ADC_MASK; @@ -448,11 +452,15 @@ static int __devinit max8997_muic_probe(struct platform_device *pdev) for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) { struct max8997_muic_irq *muic_irq = &muic_irqs[i]; + int virq = 0; + + virq = irq_create_mapping(max8997->irq_domain, muic_irq->irq); + if (!virq) + goto err_irq; + muic_irq->virq = virq; - ret = request_threaded_irq(pdata->irq_base + muic_irq->irq, - NULL, max8997_muic_irq_handler, - 0, muic_irq->name, - info); + ret = request_threaded_irq(virq, NULL,max8997_muic_irq_handler, + 0, muic_irq->name, info); if (ret) { dev_err(&pdev->dev, "failed: irq request (IRQ: %d," @@ -496,7 +504,7 @@ err_extcon: kfree(info->edev); err_irq: while (--i >= 0) - free_irq(pdata->irq_base + muic_irqs[i].irq, info); + free_irq(muic_irqs[i].virq, info); kfree(info); err_kfree: return ret; @@ -505,11 +513,10 @@ err_kfree: static int __devexit max8997_muic_remove(struct platform_device *pdev) { struct max8997_muic_info *info = platform_get_drvdata(pdev); - struct max8997_dev *max8997 = i2c_get_clientdata(info->muic); int i; for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) - free_irq(max8997->irq_base + muic_irqs[i].irq, info); + free_irq(muic_irqs[i].virq, info); cancel_work_sync(&info->irq_work); extcon_dev_unregister(info->edev); -- cgit v1.2.3 From db1b9037424b8219449a6754e9b7e97b0523c426 Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Tue, 17 Jul 2012 13:28:28 +0900 Subject: extcon: MAX77693: Add extcon-max77693 driver to support Maxim MAX77693 MUIC device This patch support Maxim MAX77693 MUIC device by using EXTCON Subsystem to handle various external connector. The extcon-max77693 use regmap method for i2c communication and support irq domain instead of previous method of irq base. Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham Signed-off-by: Kyungmin Park Signed-off-by: Greg Kroah-Hartman --- drivers/extcon/Kconfig | 10 + drivers/extcon/Makefile | 1 + drivers/extcon/extcon-max77693.c | 779 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 790 insertions(+) create mode 100644 drivers/extcon/extcon-max77693.c (limited to 'drivers/extcon/Kconfig') diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig index bb385ac629a8..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 diff --git a/drivers/extcon/Makefile b/drivers/extcon/Makefile index e932caaa311c..88961b332348 100644 --- a/drivers/extcon/Makefile +++ b/drivers/extcon/Makefile @@ -4,5 +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-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 + * + * 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 + +#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 "); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:extcon-max77693"); -- cgit v1.2.3