Commit f73f6232 authored by Chanwoo Choi's avatar Chanwoo Choi
Browse files

extcon: max8997: Consolidate duplicate code for checking ADC/CHG cable type 



This patch make max8997_muic_get_cable_type() function to remove
duplicate code for checking ADC/Charger cable type because almost
internal function need to read adc/chg_type value of MUIC register.

Also, remove *_detach() function, extcon-max8997 driver treat
attach/detach operation of cable in max8997_*_handler() function.
Lastly, this patch move defined constant in header file(include/
linux/mfd/max8997.h, max8997-private.h) because defined constant
is only used in the 'extcon-max8997.c'.

Signed-off-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: default avatarMyungjoo Ham <myungjoo.ham@samsung.com>
parent 027fcd50

drivers/extcon/extcon-max8997.c

+323 −169
Original line number Diff line number Diff line
@@ -44,31 +44,89 @@ struct max8997_muic_irq { 
};



static struct max8997_muic_irq muic_irqs[] = {

	{ MAX8997_MUICIRQ_ADCError, "muic-ADC_error" },

	{ MAX8997_MUICIRQ_ADCLow, "muic-ADC_low" },

	{ MAX8997_MUICIRQ_ADCError,	"muic-ADCERROR" },

	{ MAX8997_MUICIRQ_ADCLow,	"muic-ADCLOW" },

	{ MAX8997_MUICIRQ_ADC,		"muic-ADC" },

	{ MAX8997_MUICIRQ_VBVolt, "muic-VB_voltage" },

	{ MAX8997_MUICIRQ_DBChg, "muic-DB_charger" },

	{ MAX8997_MUICIRQ_DCDTmr, "muic-DCD_timer" },

	{ MAX8997_MUICIRQ_ChgDetRun, "muic-CDR_status" },

	{ MAX8997_MUICIRQ_ChgTyp, "muic-charger_type" },

	{ MAX8997_MUICIRQ_OVP, "muic-over_voltage" },

	{ MAX8997_MUICIRQ_VBVolt,	"muic-VBVOLT" },

	{ MAX8997_MUICIRQ_DBChg,	"muic-DBCHG" },

	{ MAX8997_MUICIRQ_DCDTmr,	"muic-DCDTMR" },

	{ MAX8997_MUICIRQ_ChgDetRun,	"muic-CHGDETRUN" },

	{ MAX8997_MUICIRQ_ChgTyp,	"muic-CHGTYP" },

	{ MAX8997_MUICIRQ_OVP,		"muic-OVP" },

};



/* Define supported cable type */

enum max8997_muic_acc_type {

	MAX8997_MUIC_ADC_GROUND = 0x0,

	MAX8997_MUIC_ADC_MHL,			/* MHL*/

	MAX8997_MUIC_ADC_REMOTE_S1_BUTTON,

	MAX8997_MUIC_ADC_REMOTE_S2_BUTTON,

	MAX8997_MUIC_ADC_REMOTE_S3_BUTTON,

	MAX8997_MUIC_ADC_REMOTE_S4_BUTTON,

	MAX8997_MUIC_ADC_REMOTE_S5_BUTTON,

	MAX8997_MUIC_ADC_REMOTE_S6_BUTTON,

	MAX8997_MUIC_ADC_REMOTE_S7_BUTTON,

	MAX8997_MUIC_ADC_REMOTE_S8_BUTTON,

	MAX8997_MUIC_ADC_REMOTE_S9_BUTTON,

	MAX8997_MUIC_ADC_REMOTE_S10_BUTTON,

	MAX8997_MUIC_ADC_REMOTE_S11_BUTTON,

	MAX8997_MUIC_ADC_REMOTE_S12_BUTTON,

	MAX8997_MUIC_ADC_RESERVED_ACC_1,

	MAX8997_MUIC_ADC_RESERVED_ACC_2,

	MAX8997_MUIC_ADC_RESERVED_ACC_3,

	MAX8997_MUIC_ADC_RESERVED_ACC_4,

	MAX8997_MUIC_ADC_RESERVED_ACC_5,

	MAX8997_MUIC_ADC_CEA936_AUDIO,

	MAX8997_MUIC_ADC_PHONE_POWERED_DEV,

	MAX8997_MUIC_ADC_TTY_CONVERTER,

	MAX8997_MUIC_ADC_UART_CABLE,

	MAX8997_MUIC_ADC_CEA936A_TYPE1_CHG,

	MAX8997_MUIC_ADC_FACTORY_MODE_USB_OFF,	/* JIG-USB-OFF */

	MAX8997_MUIC_ADC_FACTORY_MODE_USB_ON,	/* JIG-USB-ON */

	MAX8997_MUIC_ADC_AV_CABLE_NOLOAD,	/* DESKDOCK */

	MAX8997_MUIC_ADC_CEA936A_TYPE2_CHG,

	MAX8997_MUIC_ADC_FACTORY_MODE_UART_OFF,	/* JIG-UART */

	MAX8997_MUIC_ADC_FACTORY_MODE_UART_ON,	/* CARDOCK */

	MAX8997_MUIC_ADC_AUDIO_MODE_REMOTE,

	MAX8997_MUIC_ADC_OPEN,			/* OPEN */

};



enum max8997_muic_cable_group {

	MAX8997_CABLE_GROUP_ADC = 0,

	MAX8997_CABLE_GROUP_ADC_GND,

	MAX8997_CABLE_GROUP_CHG,

	MAX8997_CABLE_GROUP_VBVOLT,

};



enum max8997_muic_usb_type {

	MAX8997_USB_HOST,

	MAX8997_USB_DEVICE,

};



enum max8997_muic_charger_type {

	MAX8997_CHARGER_TYPE_NONE = 0,

	MAX8997_CHARGER_TYPE_USB,

	MAX8997_CHARGER_TYPE_DOWNSTREAM_PORT,

	MAX8997_CHARGER_TYPE_DEDICATED_CHG,

	MAX8997_CHARGER_TYPE_500MA,

	MAX8997_CHARGER_TYPE_1A,

	MAX8997_CHARGER_TYPE_DEAD_BATTERY = 7,

};



struct max8997_muic_info {

	struct device *dev;

	struct i2c_client *muic;

	struct max8997_muic_platform_data *muic_pdata;

	struct extcon_dev *edev;

	int prev_cable_type;

	int prev_chg_type;

	u8 status[2];



	int irq;

	struct work_struct irq_work;



	enum max8997_muic_charger_type pre_charger_type;

	int pre_adc;



	struct mutex mutex;



	struct extcon_dev	*edev;

	struct max8997_muic_platform_data *muic_pdata;

	enum max8997_muic_charger_type pre_charger_type;

};



enum {
@@ -181,6 +239,83 @@ static int max8997_muic_set_path(struct max8997_muic_info *info, 
	return 0;

}



/*

 * max8997_muic_get_cable_type - Return cable type and check cable state

 * @info: the instance including private data of max8997 MUIC

 * @group: the path according to attached cable

 * @attached: store cable state and return

 *

 * This function check the cable state either attached or detached,

 * and then divide precise type of cable according to cable group.

 *	- MAX8997_CABLE_GROUP_ADC

 *	- MAX8997_CABLE_GROUP_CHG

 */

static int max8997_muic_get_cable_type(struct max8997_muic_info *info,

		enum max8997_muic_cable_group group, bool *attached)

{

	int cable_type = 0;

	int adc;

	int chg_type;



	switch (group) {

	case MAX8997_CABLE_GROUP_ADC:

		/*

		 * Read ADC value to check cable type and decide cable state

		 * according to cable type

		 */

		adc = info->status[0] & STATUS1_ADC_MASK;

		adc >>= STATUS1_ADC_SHIFT;



		/*

		 * Check current cable state/cable type and store cable type

		 * (info->prev_cable_type) for handling cable when cable is

		 * detached.

		 */

		if (adc == MAX8997_MUIC_ADC_OPEN) {

			*attached = false;



			cable_type = info->prev_cable_type;

			info->prev_cable_type = MAX8997_MUIC_ADC_OPEN;

		} else {

			*attached = true;



			cable_type = info->prev_cable_type = adc;

		}

		break;

	case MAX8997_CABLE_GROUP_CHG:

		/*

		 * Read charger type to check cable type and decide cable state

		 * according to type of charger cable.

		 */

		chg_type = info->status[1] & STATUS2_CHGTYP_MASK;

		chg_type >>= STATUS2_CHGTYP_SHIFT;



		if (chg_type == MAX8997_CHARGER_TYPE_NONE) {

			*attached = false;



			cable_type = info->prev_chg_type;

			info->prev_chg_type = MAX8997_CHARGER_TYPE_NONE;

		} else {

			*attached = true;



			/*

			 * Check current cable state/cable type and store cable

			 * type(info->prev_chg_type) for handling cable when

			 * charger cable is detached.

			 */

			cable_type = info->prev_chg_type = chg_type;

		}



		break;

	default:

		dev_err(info->dev, "Unknown cable group (%d)\n", group);

		cable_type = -EINVAL;

		break;

	}



	return cable_type;

}



static int max8997_muic_handle_usb(struct max8997_muic_info *info,

			enum max8997_muic_usb_type usb_type, bool attached)

{
@@ -188,9 +323,9 @@ static int max8997_muic_handle_usb(struct max8997_muic_info *info, 


	if (usb_type == MAX8997_USB_HOST) {

		ret = max8997_muic_set_path(info, CONTROL1_SW_USB, attached);

		if (ret) {

		if (ret < 0) {

			dev_err(info->dev, "failed to update muic register\n");

			goto out;

			return ret;

		}

	}
@@ -202,38 +337,39 @@ static int max8997_muic_handle_usb(struct max8997_muic_info *info, 
		extcon_set_cable_state(info->edev, "USB", attached);

		break;

	default:

		ret = -EINVAL;

		break;

		dev_err(info->dev, "failed to detect %s usb cable\n",

			attached ? "attached" : "detached");

		return -EINVAL;

	}



out:

	return ret;

	return 0;

}



static int max8997_muic_handle_dock(struct max8997_muic_info *info,

			int adc, bool attached)

			int cable_type, bool attached)

{

	int ret = 0;



	ret = max8997_muic_set_path(info, CONTROL1_SW_AUDIO, attached);

	if (ret) {

		dev_err(info->dev, "failed to update muic register\n");

		goto out;

		return ret;

	}



	switch (adc) {

	case MAX8997_ADC_DESKDOCK:

	switch (cable_type) {

	case MAX8997_MUIC_ADC_AV_CABLE_NOLOAD:

		extcon_set_cable_state(info->edev, "Dock-desk", attached);

		break;

	case MAX8997_ADC_CARDOCK:

	case MAX8997_MUIC_ADC_FACTORY_MODE_UART_ON:

		extcon_set_cable_state(info->edev, "Dock-card", attached);

		break;

	default:

		ret = -EINVAL;

		break;

		dev_err(info->dev, "failed to detect %s dock device\n",

			attached ? "attached" : "detached");

		return -EINVAL;

	}

out:

	return ret;



	return 0;

}



static int max8997_muic_handle_jig_uart(struct max8997_muic_info *info,
@@ -245,193 +381,185 @@ static int max8997_muic_handle_jig_uart(struct max8997_muic_info *info, 
	ret = max8997_muic_set_path(info, CONTROL1_SW_UART, attached);

	if (ret) {

		dev_err(info->dev, "failed to update muic register\n");

		goto out;

		return -EINVAL;

	}



	extcon_set_cable_state(info->edev, "JIG", attached);

out:

	return ret;

}



static int max8997_muic_handle_adc_detach(struct max8997_muic_info *info)

{

	int ret = 0;



	switch (info->pre_adc) {

	case MAX8997_ADC_GROUND:

		ret = max8997_muic_handle_usb(info, MAX8997_USB_HOST, false);

		break;

	case MAX8997_ADC_MHL:

		extcon_set_cable_state(info->edev, "MHL", false);

		break;

	case MAX8997_ADC_JIG_USB_1:

	case MAX8997_ADC_JIG_USB_2:

		ret = max8997_muic_handle_usb(info, MAX8997_USB_DEVICE, false);

		break;

	case MAX8997_ADC_DESKDOCK:

	case MAX8997_ADC_CARDOCK:

		ret = max8997_muic_handle_dock(info, info->pre_adc, false);

		break;

	case MAX8997_ADC_JIG_UART:

		ret = max8997_muic_handle_jig_uart(info, false);

		break;

	default:

		break;

	}



	return ret;

	return 0;

}



static int max8997_muic_handle_adc(struct max8997_muic_info *info, int adc)

static int max8997_muic_adc_handler(struct max8997_muic_info *info)

{

	int cable_type;

	bool attached;

	int ret = 0;



	switch (adc) {

	case MAX8997_ADC_GROUND:

		ret = max8997_muic_handle_usb(info, MAX8997_USB_HOST, true);

		break;

	case MAX8997_ADC_MHL:

		extcon_set_cable_state(info->edev, "MHL", true);

		break;

	case MAX8997_ADC_JIG_USB_1:

	case MAX8997_ADC_JIG_USB_2:

		ret = max8997_muic_handle_usb(info, MAX8997_USB_DEVICE, true);

		break;

	case MAX8997_ADC_DESKDOCK:

	case MAX8997_ADC_CARDOCK:

		ret = max8997_muic_handle_dock(info, adc, true);

		break;

	case MAX8997_ADC_JIG_UART:

		ret = max8997_muic_handle_jig_uart(info, true);

		break;

	case MAX8997_ADC_OPEN:

		ret = max8997_muic_handle_adc_detach(info);

		break;

	default:

		ret = -EINVAL;

		goto out;

	}

	/* Check cable state which is either detached or attached */

	cable_type = max8997_muic_get_cable_type(info,

				MAX8997_CABLE_GROUP_ADC, &attached);



	info->pre_adc = adc;

out:

	switch (cable_type) {

	case MAX8997_MUIC_ADC_GROUND:

		ret = max8997_muic_handle_usb(info, MAX8997_USB_HOST, attached);

		if (ret < 0)

			return ret;

}



static int max8997_muic_handle_charger_type_detach(

				struct max8997_muic_info *info)

{

	switch (info->pre_charger_type) {

	case MAX8997_CHARGER_TYPE_USB:

		extcon_set_cable_state(info->edev, "USB", false);

		break;

	case MAX8997_CHARGER_TYPE_DOWNSTREAM_PORT:

		extcon_set_cable_state(info->edev, "Charge-downstream", false);

		break;

	case MAX8997_CHARGER_TYPE_DEDICATED_CHG:

		extcon_set_cable_state(info->edev, "TA", false);

	case MAX8997_MUIC_ADC_MHL:

		extcon_set_cable_state(info->edev, "MHL", attached);

		break;

	case MAX8997_CHARGER_TYPE_500MA:

		extcon_set_cable_state(info->edev, "Slow-charger", false);

	case MAX8997_MUIC_ADC_FACTORY_MODE_USB_OFF:

	case MAX8997_MUIC_ADC_FACTORY_MODE_USB_ON:

		ret = max8997_muic_handle_usb(info, MAX8997_USB_DEVICE, attached);

		if (ret < 0)

			return ret;

		break;

	case MAX8997_CHARGER_TYPE_1A:

		extcon_set_cable_state(info->edev, "Fast-charger", false);

	case MAX8997_MUIC_ADC_AV_CABLE_NOLOAD:

	case MAX8997_MUIC_ADC_FACTORY_MODE_UART_ON:

		ret = max8997_muic_handle_dock(info, cable_type, attached);

		if (ret < 0)

			return ret;

		break;

	case MAX8997_MUIC_ADC_FACTORY_MODE_UART_OFF:

		ret = max8997_muic_handle_jig_uart(info, attached);

		break;

	case MAX8997_MUIC_ADC_REMOTE_S1_BUTTON:

	case MAX8997_MUIC_ADC_REMOTE_S2_BUTTON:

	case MAX8997_MUIC_ADC_REMOTE_S3_BUTTON:

	case MAX8997_MUIC_ADC_REMOTE_S4_BUTTON:

	case MAX8997_MUIC_ADC_REMOTE_S5_BUTTON:

	case MAX8997_MUIC_ADC_REMOTE_S6_BUTTON:

	case MAX8997_MUIC_ADC_REMOTE_S7_BUTTON:

	case MAX8997_MUIC_ADC_REMOTE_S8_BUTTON:

	case MAX8997_MUIC_ADC_REMOTE_S9_BUTTON:

	case MAX8997_MUIC_ADC_REMOTE_S10_BUTTON:

	case MAX8997_MUIC_ADC_REMOTE_S11_BUTTON:

	case MAX8997_MUIC_ADC_REMOTE_S12_BUTTON:

	case MAX8997_MUIC_ADC_RESERVED_ACC_1:

	case MAX8997_MUIC_ADC_RESERVED_ACC_2:

	case MAX8997_MUIC_ADC_RESERVED_ACC_3:

	case MAX8997_MUIC_ADC_RESERVED_ACC_4:

	case MAX8997_MUIC_ADC_RESERVED_ACC_5:

	case MAX8997_MUIC_ADC_CEA936_AUDIO:

	case MAX8997_MUIC_ADC_PHONE_POWERED_DEV:

	case MAX8997_MUIC_ADC_TTY_CONVERTER:

	case MAX8997_MUIC_ADC_UART_CABLE:

	case MAX8997_MUIC_ADC_CEA936A_TYPE1_CHG:

	case MAX8997_MUIC_ADC_CEA936A_TYPE2_CHG:

	case MAX8997_MUIC_ADC_AUDIO_MODE_REMOTE:

		/*

		 * This cable isn't used in general case if it is specially

		 * needed to detect additional cable, should implement

		 * proper operation when this cable is attached/detached.

		 */

		dev_info(info->dev,

			"cable is %s but it isn't used (type:0x%x)\n",

			attached ? "attached" : "detached", cable_type);

		return -EAGAIN;

	default:

		dev_err(info->dev,

			"failed to detect %s unknown cable (type:0x%x)\n",

			attached ? "attached" : "detached", cable_type);

		return -EINVAL;

	}



	return 0;

}



static int max8997_muic_handle_charger_type(struct max8997_muic_info *info,

				enum max8997_muic_charger_type charger_type)

static int max8997_muic_chg_handler(struct max8997_muic_info *info)

{

	u8 adc;

	int ret;

	int chg_type;

	bool attached;

	int adc;



	ret = max8997_read_reg(info->muic, MAX8997_MUIC_REG_STATUS1, &adc);

	if (ret) {

		dev_err(info->dev, "failed to read muic register\n");

		goto out;

	}

	chg_type = max8997_muic_get_cable_type(info,

				MAX8997_CABLE_GROUP_CHG, &attached);



	switch (charger_type) {

	switch (chg_type) {

	case MAX8997_CHARGER_TYPE_NONE:

		ret = max8997_muic_handle_charger_type_detach(info);

		break;

	case MAX8997_CHARGER_TYPE_USB:

		if ((adc & STATUS1_ADC_MASK) == MAX8997_ADC_OPEN) {

		adc = info->status[0] & STATUS1_ADC_MASK;

		adc >>= STATUS1_ADC_SHIFT;



		if ((adc & STATUS1_ADC_MASK) == MAX8997_MUIC_ADC_OPEN) {

			max8997_muic_handle_usb(info,

					MAX8997_USB_DEVICE, true);

					MAX8997_USB_DEVICE, attached);

		}

		break;

	case MAX8997_CHARGER_TYPE_DOWNSTREAM_PORT:

		extcon_set_cable_state(info->edev, "Charge-downstream", true);

		extcon_set_cable_state(info->edev, "Charge-downstream", attached);

		break;

	case MAX8997_CHARGER_TYPE_DEDICATED_CHG:

		extcon_set_cable_state(info->edev, "TA", true);

		extcon_set_cable_state(info->edev, "TA", attached);

		break;

	case MAX8997_CHARGER_TYPE_500MA:

		extcon_set_cable_state(info->edev, "Slow-charger", true);

		extcon_set_cable_state(info->edev, "Slow-charger", attached);

		break;

	case MAX8997_CHARGER_TYPE_1A:

		extcon_set_cable_state(info->edev, "Fast-charger", true);

		extcon_set_cable_state(info->edev, "Fast-charger", attached);

		break;

	default:

		ret = -EINVAL;

		goto out;

		dev_err(info->dev,

			"failed to detect %s unknown chg cable (type:0x%x)\n",

			attached ? "attached" : "detached", chg_type);

		return -EINVAL;

	}



	info->pre_charger_type = charger_type;

out:

	return ret;

	return 0;

}



static void max8997_muic_irq_work(struct work_struct *work)

{

	struct max8997_muic_info *info = container_of(work,

			struct max8997_muic_info, irq_work);

	u8 status[2];

	u8 adc, chg_type;

	int irq_type = 0;

	int i, ret;



	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 = max8997_bulk_read(info->muic, MAX8997_MUIC_REG_STATUS1,

				2, status);

				2, info->status);

	if (ret) {

		dev_err(info->dev, "failed to read muic register\n");

		mutex_unlock(&info->mutex);

		return;

	}



	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_ADCError:

	case MAX8997_MUICIRQ_ADCLow:

	case MAX8997_MUICIRQ_ADC:

		adc = status[0] & STATUS1_ADC_MASK;

		adc >>= STATUS1_ADC_SHIFT;



		max8997_muic_handle_adc(info, adc);

		/* Handle all of cable except for charger cable */

		ret = max8997_muic_adc_handler(info);

		break;

	case MAX8997_MUICIRQ_VBVolt:

	case MAX8997_MUICIRQ_DBChg:

	case MAX8997_MUICIRQ_DCDTmr:

	case MAX8997_MUICIRQ_ChgDetRun:

	case MAX8997_MUICIRQ_ChgTyp:

		chg_type = status[1] & STATUS2_CHGTYP_MASK;

		chg_type >>= STATUS2_CHGTYP_SHIFT;



		max8997_muic_handle_charger_type(info, chg_type);

		/* Handle charger cable */

		ret = max8997_muic_chg_handler(info);

		break;

	case MAX8997_MUICIRQ_OVP:

		break;

	default:

		dev_info(info->dev, "misc interrupt: irq %d occurred\n",

				irq_type);

		break;

		mutex_unlock(&info->mutex);

		return;

	}



	if (ret < 0)

		dev_err(info->dev, "failed to handle MUIC interrupt\n");



	mutex_unlock(&info->mutex);



	return;
@@ -449,29 +577,49 @@ static irqreturn_t max8997_muic_irq_handler(int irq, void *data) 
	return IRQ_HANDLED;

}



static void max8997_muic_detect_dev(struct max8997_muic_info *info)

static int max8997_muic_detect_dev(struct max8997_muic_info *info)

{

	int ret;

	u8 status[2], adc, chg_type;

	int ret = 0;

	int adc;

	int chg_type;

	bool attached;



	ret = max8997_bulk_read(info->muic, MAX8997_MUIC_REG_STATUS1,

				2, status);

	mutex_lock(&info->mutex);



	/* Read STATUSx register to detect accessory */

	ret = max8997_bulk_read(info->muic,

			MAX8997_MUIC_REG_STATUS1, 2, info->status);

	if (ret) {

		dev_err(info->dev, "failed to read muic register\n");

		return;

		dev_err(info->dev, "failed to read MUIC register\n");

		mutex_unlock(&info->mutex);

		return -EINVAL;

	}



	dev_info(info->dev, "STATUS1:0x%x, STATUS2:0x%x\n",

			status[0], status[1]);

	adc = max8997_muic_get_cable_type(info, MAX8997_CABLE_GROUP_ADC,

					&attached);

	if (attached && adc != MAX8997_MUIC_ADC_OPEN) {

		ret = max8997_muic_adc_handler(info);

		if (ret < 0) {

			dev_err(info->dev, "Cannot detect ADC cable\n");

			mutex_unlock(&info->mutex);

			return ret;

		}

	}



	adc = status[0] & STATUS1_ADC_MASK;

	adc >>= STATUS1_ADC_SHIFT;

	chg_type = max8997_muic_get_cable_type(info, MAX8997_CABLE_GROUP_CHG,

					&attached);

	if (attached && chg_type != MAX8997_CHARGER_TYPE_NONE) {

		ret = max8997_muic_chg_handler(info);

		if (ret < 0) {

			dev_err(info->dev, "Cannot detect charger cable\n");

			mutex_unlock(&info->mutex);

			return ret;

		}

	}



	chg_type = status[1] & STATUS2_CHGTYP_MASK;

	chg_type >>= STATUS2_CHGTYP_SHIFT;

	mutex_unlock(&info->mutex);



	max8997_muic_handle_adc(info, adc);

	max8997_muic_handle_charger_type(info, chg_type);

	return 0;

}



static int max8997_muic_probe(struct platform_device *pdev)
@@ -550,10 +698,16 @@ static int max8997_muic_probe(struct platform_device *pdev) 
	max8997_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS);



	/* Initial device detection */

	max8997_muic_detect_dev(info);

	ret = max8997_muic_detect_dev(info);

	if (ret < 0) {

		dev_err(&pdev->dev, "failed to detect cable type\n");

		goto err_extcon;

	}



	return ret;



err_extcon:

	extcon_dev_unregister(info->edev);

err_irq:

	while (--i >= 0)

		free_irq(muic_irqs[i].virq, info);

include/linux/mfd/max8997-private.h

+0 −9
Original line number Diff line number Diff line
@@ -258,15 +258,6 @@ enum max8997_muic_reg { 
#define CONTROL3_BTLDSET_MASK		(0x3 << CONTROL3_BTLDSET_SHIFT)

#define CONTROL3_ADCDBSET_MASK		(0x3 << CONTROL3_ADCDBSET_SHIFT)



#define	MAX8997_ADC_GROUND		0x00

#define	MAX8997_ADC_MHL			0x01

#define	MAX8997_ADC_JIG_USB_1		0x18

#define	MAX8997_ADC_JIG_USB_2		0x19

#define	MAX8997_ADC_DESKDOCK		0x1a

#define	MAX8997_ADC_JIG_UART		0x1c

#define	MAX8997_ADC_CARDOCK		0x1d

#define	MAX8997_ADC_OPEN		0x1f



enum max8997_haptic_reg {

	MAX8997_HAPTIC_REG_GENERAL	= 0x00,

	MAX8997_HAPTIC_REG_CONF1	= 0x01,

include/linux/mfd/max8997.h

+0 −15
Original line number Diff line number Diff line
@@ -78,21 +78,6 @@ struct max8997_regulator_data { 
	struct device_node *reg_node;

};



enum max8997_muic_usb_type {

	MAX8997_USB_HOST,

	MAX8997_USB_DEVICE,

};



enum max8997_muic_charger_type {

	MAX8997_CHARGER_TYPE_NONE = 0,

	MAX8997_CHARGER_TYPE_USB,

	MAX8997_CHARGER_TYPE_DOWNSTREAM_PORT,

	MAX8997_CHARGER_TYPE_DEDICATED_CHG,

	MAX8997_CHARGER_TYPE_500MA,

	MAX8997_CHARGER_TYPE_1A,

	MAX8997_CHARGER_TYPE_DEAD_BATTERY = 7,

};



struct max8997_muic_reg_data {

	u8 addr;

	u8 data;

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