On Mon, Jun 25, 2018 at 04:08:37PM +0800, Li Jun wrote:
> This patch adds 3 APIs to get the typec port power and data type,
> and preferred power role by its name string.
>
> Signed-off-by: Li Jun <jun.li@xxxxxxx>
Reviewed-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
> ---
> drivers/usb/typec/class.c | 58 +++++++++++++++++++++++++++++++++++++++++++----
> include/linux/usb/typec.h | 3 +++
> 2 files changed, 57 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
> index 53df10d..6331059 100644
> --- a/drivers/usb/typec/class.c
> +++ b/drivers/usb/typec/class.c
> @@ -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 */
>
> diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h
> index 672b39b..15f8d9a 100644
> --- a/include/linux/usb/typec.h
> +++ b/include/linux/usb/typec.h
> @@ -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 */
Thanks,
--
heikki
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