/* ------------------------------------------------------------------------- */
+static const struct i2c_device_id *i2c_match_id(const struct i2c_device_id *id,
+ const struct i2c_client *client)
+{
+ while (id->name[0]) {
+ if (strcmp(client->name, id->name) == 0)
+ return id;
+ id++;
+ }
+ return NULL;
+}
+
static int i2c_device_match(struct device *dev, struct device_driver *drv)
{
struct i2c_client *client = to_i2c_client(dev);
if (!is_newstyle_driver(driver))
return 0;
- /* new style drivers use the same kind of driver matching policy
- * as platform devices or SPI: compare device and driver IDs.
- */
- return strcmp(client->driver_name, drv->name) == 0;
+ /* match on an id table if there is one */
+ if (driver->id_table)
+ return i2c_match_id(driver->id_table, client) != NULL;
+
+ return 0;
}
#ifdef CONFIG_HOTPLUG
struct i2c_client *client = to_i2c_client(dev);
/* by definition, legacy drivers can't hotplug */
- if (dev->driver || !client->driver_name)
+ if (dev->driver)
return 0;
- if (add_uevent_var(env, "MODALIAS=%s", client->driver_name))
+ if (add_uevent_var(env, "MODALIAS=%s%s",
+ I2C_MODULE_PREFIX, client->name))
return -ENOMEM;
dev_dbg(dev, "uevent\n");
return 0;
{
struct i2c_client *client = to_i2c_client(dev);
struct i2c_driver *driver = to_i2c_driver(dev->driver);
+ const struct i2c_device_id *id;
int status;
if (!driver->probe)
return -ENODEV;
client->driver = driver;
dev_dbg(dev, "probe\n");
- status = driver->probe(client);
+
+ if (driver->id_table)
+ id = i2c_match_id(driver->id_table, client);
+ else
+ id = NULL;
+ status = driver->probe(client, id);
if (status)
client->driver = NULL;
return status;
static ssize_t show_modalias(struct device *dev, struct device_attribute *attr, char *buf)
{
struct i2c_client *client = to_i2c_client(dev);
- return client->driver_name
- ? sprintf(buf, "%s\n", client->driver_name)
- : 0;
+ return sprintf(buf, "%s%s\n", I2C_MODULE_PREFIX, client->name);
}
static struct device_attribute i2c_dev_attrs[] = {
client->addr = info->addr;
client->irq = info->irq;
- strlcpy(client->driver_name, info->driver_name,
- sizeof(client->driver_name));
strlcpy(client->name, info->type, sizeof(client->name));
/* a new style driver may be bound to this device when we
EXPORT_SYMBOL_GPL(i2c_unregister_device);
-static int dummy_nop(struct i2c_client *client)
+static const struct i2c_device_id dummy_id[] = {
+ { "dummy", 0 },
+ { },
+};
+
+static int dummy_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ return 0;
+}
+
+static int dummy_remove(struct i2c_client *client)
{
return 0;
}
static struct i2c_driver dummy_driver = {
.driver.name = "dummy",
- .probe = dummy_nop,
- .remove = dummy_nop,
+ .probe = dummy_probe,
+ .remove = dummy_remove,
+ .id_table = dummy_id,
};
/**
* i2c_new_dummy - return a new i2c device bound to a dummy driver
* @adapter: the adapter managing the device
* @address: seven bit address to be used
- * @type: optional label used for i2c_client.name
* Context: can sleep
*
* This returns an I2C client bound to the "dummy" driver, intended for use
* i2c_unregister_device(); or NULL to indicate an error.
*/
struct i2c_client *
-i2c_new_dummy(struct i2c_adapter *adapter, u16 address, const char *type)
+i2c_new_dummy(struct i2c_adapter *adapter, u16 address)
{
struct i2c_board_info info = {
- .driver_name = "dummy",
- .addr = address,
+ I2C_BOARD_INFO("dummy", address),
};
- if (type)
- strlcpy(info.type, type, sizeof info.type);
return i2c_new_device(adapter, &info);
}
EXPORT_SYMBOL_GPL(i2c_new_dummy);