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usb: typec: Add typec_find_orientation()

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Function that converts orientation string into orientation
value.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20200507150900.12102-2-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heikki Krogerus 2020-05-07 18:08:57 +03:00 committed by Greg Kroah-Hartman
parent 3e63cff384
commit 8c49c9ee4a
2 changed files with 24 additions and 11 deletions
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34
drivers/usb/typec/class.c
View file

@ -917,6 +917,12 @@ EXPORT_SYMBOL_GPL(typec_unregister_cable);
/* ------------------------------------------------------------------------- */
/* USB Type-C ports */
static const char * const typec_orientations[] = {
[TYPEC_ORIENTATION_NONE] = "unknown",
[TYPEC_ORIENTATION_NORMAL] = "normal",
[TYPEC_ORIENTATION_REVERSE] = "reverse",
};
static const char * const typec_roles[] = {
[TYPEC_SINK] = "sink",
[TYPEC_SOURCE] = "source",
@ -1248,18 +1254,9 @@ static ssize_t orientation_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct typec_port *p = to_typec_port(dev);
enum typec_orientation orientation = typec_get_orientation(p);
struct typec_port *port = to_typec_port(dev);
switch (orientation) {
case TYPEC_ORIENTATION_NORMAL:
return sprintf(buf, "%s\n", "normal");
case TYPEC_ORIENTATION_REVERSE:
return sprintf(buf, "%s\n", "reverse");
case TYPEC_ORIENTATION_NONE:
default:
return sprintf(buf, "%s\n", "unknown");
}
return sprintf(buf, "%s\n", typec_orientations[port->orientation]);
}
static DEVICE_ATTR_RO(orientation);
@ -1451,6 +1448,21 @@ void typec_set_pwr_opmode(struct typec_port *port,
}
EXPORT_SYMBOL_GPL(typec_set_pwr_opmode);
/**
* typec_find_orientation - Convert orientation string to enum typec_orientation
* @name: Orientation string
*
* This routine is used to find the typec_orientation by its string name @name.
*
* Returns the orientation value on success, otherwise negative error code.
*/
int typec_find_orientation(const char *name)
{
return match_string(typec_orientations, ARRAY_SIZE(typec_orientations),
name);
}
EXPORT_SYMBOL_GPL(typec_find_orientation);
/**
* typec_find_port_power_role - Get the typec port power capability
* @name: port power capability string

1
include/linux/usb/typec.h
View file

@ -254,6 +254,7 @@ int typec_set_mode(struct typec_port *port, int mode);
void *typec_get_drvdata(struct typec_port *port);
int typec_find_orientation(const char *name);
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);