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Commit 9c90e024 authored by Li Jun's avatar Li Jun Committed by Greg Kroah-Hartman
Browse files

usb: typec: add API to get typec basic port power and data config 



This patch adds 3 APIs to get the typec port power and data type,
and preferred power role by its name string.

Reviewed-by: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: default avatarLi Jun <jun.li@nxp.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 5e85a04c

drivers/usb/typec/class.c

+54 −4
Original line number Diff line number Diff line
@@ -796,12 +796,18 @@ static const char * const typec_data_roles[] = { 
	[TYPEC_HOST]	= "host",

};



static const char * const typec_port_types[] = {

static const char * const typec_port_power_roles[] = {

	[TYPEC_PORT_SRC] = "source",

	[TYPEC_PORT_SNK] = "sink",

	[TYPEC_PORT_DRP] = "dual",

};



static const char * const typec_port_data_roles[] = {

	[TYPEC_PORT_DFP] = "host",

	[TYPEC_PORT_UFP] = "device",

	[TYPEC_PORT_DRD] = "dual",

};



static const char * const typec_port_types_drp[] = {

	[TYPEC_PORT_SRC] = "dual [source] sink",

	[TYPEC_PORT_SNK] = "dual source [sink]",
@@ -932,7 +938,7 @@ static ssize_t power_role_store(struct device *dev, 
	mutex_lock(&port->port_type_lock);

	if (port->port_type != TYPEC_PORT_DRP) {

		dev_dbg(dev, "port type fixed at \"%s\"",

			     typec_port_types[port->port_type]);

			     typec_port_power_roles[port->port_type]);

		ret = -EOPNOTSUPP;

		goto unlock_and_ret;

	}
@@ -973,7 +979,7 @@ port_type_store(struct device *dev, struct device_attribute *attr, 
		return -EOPNOTSUPP;

	}



	ret = sysfs_match_string(typec_port_types, buf);

	ret = sysfs_match_string(typec_port_power_roles, buf);

	if (ret < 0)

		return ret;
@@ -1007,7 +1013,7 @@ port_type_show(struct device *dev, struct device_attribute *attr, 
		return sprintf(buf, "%s\n",

			       typec_port_types_drp[port->port_type]);



	return sprintf(buf, "[%s]\n", typec_port_types[port->cap->type]);

	return sprintf(buf, "[%s]\n", typec_port_power_roles[port->cap->type]);

}

static DEVICE_ATTR_RW(port_type);
@@ -1252,6 +1258,50 @@ void typec_set_pwr_opmode(struct typec_port *port, 
}

EXPORT_SYMBOL_GPL(typec_set_pwr_opmode);



/**

 * typec_find_port_power_role - Get the typec port power capability

 * @name: port power capability string

 *

 * This routine is used to find the typec_port_type by its string name.

 *

 * Returns typec_port_type if success, otherwise negative error code.

 */

int typec_find_port_power_role(const char *name)

{

	return match_string(typec_port_power_roles,

			    ARRAY_SIZE(typec_port_power_roles), name);

}

EXPORT_SYMBOL_GPL(typec_find_port_power_role);



/**

 * typec_find_power_role - Find the typec one specific power role

 * @name: power role string

 *

 * This routine is used to find the typec_role by its string name.

 *

 * Returns typec_role if success, otherwise negative error code.

 */

int typec_find_power_role(const char *name)

{

	return match_string(typec_roles, ARRAY_SIZE(typec_roles), name);

}

EXPORT_SYMBOL_GPL(typec_find_power_role);



/**

 * typec_find_port_data_role - Get the typec port data capability

 * @name: port data capability string

 *

 * This routine is used to find the typec_port_data by its string name.

 *

 * Returns typec_port_data if success, otherwise negative error code.

 */

int typec_find_port_data_role(const char *name)

{

	return match_string(typec_port_data_roles,

			    ARRAY_SIZE(typec_port_data_roles), name);

}

EXPORT_SYMBOL_GPL(typec_find_port_data_role);



/* ------------------------------------------ */

/* API for Multiplexer/DeMultiplexer Switches */

include/linux/usb/typec.h

+3 −0
Original line number Diff line number Diff line
@@ -267,4 +267,7 @@ int typec_set_orientation(struct typec_port *port, 
			  enum typec_orientation orientation);

int typec_set_mode(struct typec_port *port, int mode);



int typec_find_port_power_role(const char *name);

int typec_find_power_role(const char *name);

int typec_find_port_data_role(const char *name);

#endif /* __LINUX_USB_TYPEC_H */