Introducing struct typec_operations which has the same
callbacks as struct typec_capability. The old callbacks are
kept for now, but after all users have been converted, they
will be removed.
Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
drivers/usb/typec/class.c | 39 +++++++++++++++++++++++++++++----------
include/linux/usb/typec.h | 20 ++++++++++++++++++++
2 files changed, 49 insertions(+), 10 deletions(-)
diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index 51154634c2c0..b934a006535a 100644
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -54,6 +54,7 @@ struct typec_port {
const struct typec_capability *orig_cap; /* to be removed */
const struct typec_capability *cap;
+ const struct typec_operations *ops;
};
#define to_typec_port(_dev_) container_of(_dev_, struct typec_port, dev)
@@ -956,7 +957,7 @@ preferred_role_store(struct device *dev, struct device_attribute *attr,
return -EOPNOTSUPP;
}
- if (!port->cap->try_role) {
+ if (!port->cap->try_role && (!port->ops || !port->ops->try_role)) {
dev_dbg(dev, "Setting preferred role not supported\n");
return -EOPNOTSUPP;
}
@@ -969,7 +970,10 @@ preferred_role_store(struct device *dev, struct device_attribute *attr,
return -EINVAL;
}
- ret = port->cap->try_role(port->orig_cap, role);
+ if (port->ops && port->ops->try_role)
+ ret = port->ops->try_role(port, role);
+ else
+ ret = port->cap->try_role(port->orig_cap, role);
if (ret)
return ret;
@@ -1000,7 +1004,7 @@ static ssize_t data_role_store(struct device *dev,
struct typec_port *port = to_typec_port(dev);
int ret;
- if (!port->cap->dr_set) {
+ if (!port->cap->dr_set && (!port->ops || !port->ops->dr_set)) {
dev_dbg(dev, "data role swapping not supported\n");
return -EOPNOTSUPP;
}
@@ -1015,7 +1019,10 @@ static ssize_t data_role_store(struct device *dev,
goto unlock_and_ret;
}
- ret = port->cap->dr_set(port->orig_cap, ret);
+ if (port->ops && port->ops->dr_set)
+ ret = port->ops->dr_set(port, ret);
+ else
+ ret = port->cap->dr_set(port->orig_cap, ret);
if (ret)
goto unlock_and_ret;
@@ -1050,7 +1057,7 @@ static ssize_t power_role_store(struct device *dev,
return -EOPNOTSUPP;
}
- if (!port->cap->pr_set) {
+ if (!port->cap->pr_set && (!port->ops || !port->ops->pr_set)) {
dev_dbg(dev, "power role swapping not supported\n");
return -EOPNOTSUPP;
}
@@ -1072,7 +1079,10 @@ static ssize_t power_role_store(struct device *dev,
goto unlock_and_ret;
}
- ret = port->cap->pr_set(port->orig_cap, ret);
+ if (port->ops && port->ops->dr_set)
+ ret = port->ops->pr_set(port, ret);
+ else
+ ret = port->cap->pr_set(port->orig_cap, ret);
if (ret)
goto unlock_and_ret;
@@ -1103,7 +1113,8 @@ port_type_store(struct device *dev, struct device_attribute *attr,
int ret;
enum typec_port_type type;
- if (!port->cap->port_type_set || port->cap->type != TYPEC_PORT_DRP) {
+ if (port->cap->type != TYPEC_PORT_DRP || (!port->cap->port_type_set &&
+ (!port->ops || !port->ops->port_type_set))) {
dev_dbg(dev, "changing port type not supported\n");
return -EOPNOTSUPP;
}
@@ -1120,7 +1131,10 @@ port_type_store(struct device *dev, struct device_attribute *attr,
goto unlock_and_ret;
}
- ret = port->cap->port_type_set(port->orig_cap, type);
+ if (port->ops && port->ops->port_type_set)
+ ret = port->ops->port_type_set(port, type);
+ else
+ ret = port->cap->port_type_set(port->orig_cap, type);
if (ret)
goto unlock_and_ret;
@@ -1176,7 +1190,7 @@ static ssize_t vconn_source_store(struct device *dev,
return -EOPNOTSUPP;
}
- if (!port->cap->vconn_set) {
+ if (!port->cap->vconn_set && (!port->ops || !port->ops->vconn_set)) {
dev_dbg(dev, "VCONN swapping not supported\n");
return -EOPNOTSUPP;
}
@@ -1185,7 +1199,11 @@ static ssize_t vconn_source_store(struct device *dev,
if (ret)
return ret;
- ret = port->cap->vconn_set(port->orig_cap, (enum typec_role)source);
+ if (port->ops && port->ops->vconn_set)
+ ret = port->ops->vconn_set(port, (enum typec_role)source);
+ else
+ ret = port->cap->vconn_set(port->orig_cap,
+ (enum typec_role)source);
if (ret)
return ret;
@@ -1591,6 +1609,7 @@ struct typec_port *typec_register_port(struct device *parent,
mutex_init(&port->port_type_lock);
port->id = id;
+ port->ops = cap->ops;
port->orig_cap = cap;
port->port_type = cap->type;
port->prefer_role = cap->prefer_role;
diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h
index 8b90cd77331c..c9bef128453b 100644
--- a/include/linux/usb/typec.h
+++ b/include/linux/usb/typec.h
@@ -168,6 +168,23 @@ struct typec_partner_desc {
struct usb_pd_identity *identity;
};
+/**
+ * struct typec_operations - USB Type-C Port Operations
+ * @try_role: Set data role preference for DRP port
+ * @dr_set: Set Data Role
+ * @pr_set: Set Power Role
+ * @vconn_set: Source VCONN
+ * @port_type_set: Set port type
+ */
+struct typec_operations {
+ int (*try_role)(struct typec_port *port, int role);
+ int (*dr_set)(struct typec_port *port, enum typec_data_role role);
+ int (*pr_set)(struct typec_port *port, enum typec_role role);
+ int (*vconn_set)(struct typec_port *port, enum typec_role role);
+ int (*port_type_set)(struct typec_port *port,
+ enum typec_port_type type);
+};
+
/*
* struct typec_capability - USB Type-C Port Capabilities
* @type: Supported power role of the port
@@ -180,6 +197,7 @@ struct typec_partner_desc {
* @mux: Multiplexer switch for Alternate/Accessory Modes
* @fwnode: Optional fwnode of the port
* @driver_data: Private pointer for driver specific info
+ * @ops: Port operations vector
* @try_role: Set data role preference for DRP port
* @dr_set: Set Data Role
* @pr_set: Set Power Role
@@ -201,6 +219,8 @@ struct typec_capability {
struct fwnode_handle *fwnode;
void *driver_data;
+ const struct typec_operations *ops;
+
int (*try_role)(const struct typec_capability *,
int role);
--
2.24.0.rc1
