diff options
Diffstat (limited to 'drivers/staging/greybus/connection.c')
| -rw-r--r-- | drivers/staging/greybus/connection.c | 59 |
1 files changed, 56 insertions, 3 deletions
diff --git a/drivers/staging/greybus/connection.c b/drivers/staging/greybus/connection.c index b1e933fc7044..2d71679ff66c 100644 --- a/drivers/staging/greybus/connection.c +++ b/drivers/staging/greybus/connection.c @@ -111,6 +111,44 @@ static void connection_timeout(struct work_struct *work) printk("timeout!\n"); } +static ssize_t state_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct gb_connection *connection = to_gb_connection(dev); + + return sprintf(buf, "%d", connection->state); +} +static DEVICE_ATTR_RO(state); + +static ssize_t protocol_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct gb_connection *connection = to_gb_connection(dev); + + return sprintf(buf, "%d", connection->protocol); +} +static DEVICE_ATTR_RO(protocol); + +static struct attribute *connection_attrs[] = { + &dev_attr_state.attr, + &dev_attr_protocol.attr, + NULL, +}; + +ATTRIBUTE_GROUPS(connection); + +static void gb_connection_release(struct device *dev) +{ + struct gb_connection *connection = to_gb_connection(dev); + + kfree(connection); +} + +static struct device_type greybus_connection_type = { + .name = "greybus_connection", + .release = gb_connection_release, +}; + /* * Set up a Greybus connection, representing the bidirectional link * between a CPort on a (local) Greybus host device and a CPort on @@ -127,6 +165,7 @@ struct gb_connection *gb_connection_create(struct gb_interface *interface, { struct gb_connection *connection; struct greybus_host_device *hd; + int retval; connection = kzalloc(sizeof(*connection), GFP_KERNEL); if (!connection) @@ -145,6 +184,21 @@ struct gb_connection *gb_connection_create(struct gb_interface *interface, connection->protocol = protocol; connection->state = GB_CONNECTION_STATE_DISABLED; + connection->dev.parent = &interface->dev; + connection->dev.driver = NULL; + connection->dev.bus = &greybus_bus_type; + connection->dev.type = &greybus_connection_type; + connection->dev.groups = connection_groups; + device_initialize(&connection->dev); + dev_set_name(&connection->dev, "%s:%d", + dev_name(&interface->dev), cport_id); + + retval = device_add(&connection->dev); + if (retval) { + kfree(connection); + return NULL; + } + spin_lock_irq(&gb_connections_lock); _gb_hd_connection_insert(hd, connection); list_add_tail(&connection->interface_links, &interface->connections); @@ -182,9 +236,8 @@ void gb_connection_destroy(struct gb_connection *connection) spin_unlock_irq(&gb_connections_lock); gb_connection_hd_cport_id_free(connection); - /* kref_put(connection->interface); */ - /* kref_put(connection->hd); */ - kfree(connection); + + device_del(&connection->dev); } u16 gb_connection_operation_id(struct gb_connection *connection) |