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Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6

* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
  i2c: Fix bad hint about irqs in i2c.h
  i2c: Documentation: fix device matching description
Linus Torvalds 17 lat temu
rodzic
commit
f7572da502
2 zmienionych plików z 15 dodań i 5 usunięć
  1. 14 4
      Documentation/i2c/writing-clients
  2. 1 1
      include/linux/i2c.h

+ 14 - 4
Documentation/i2c/writing-clients

@@ -25,12 +25,23 @@ routines, and should be zero-initialized except for fields with data you
 provide.  A client structure holds device-specific information like the
 driver model device node, and its I2C address.
 
+/* iff driver uses driver model ("new style") binding model: */
+
+static struct i2c_device_id foo_idtable[] = {
+	{ "foo", my_id_for_foo },
+	{ "bar", my_id_for_bar },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(i2c, foo_idtable);
+
 static struct i2c_driver foo_driver = {
 	.driver = {
 		.name	= "foo",
 	},
 
 	/* iff driver uses driver model ("new style") binding model: */
+	.id_table	= foo_ids,
 	.probe		= foo_probe,
 	.remove		= foo_remove,
 
@@ -173,10 +184,9 @@ handle may be used during foo_probe().  If foo_probe() reports success
 (zero not a negative status code) it may save the handle and use it until
 foo_remove() returns.  That binding model is used by most Linux drivers.
 
-Drivers match devices when i2c_client.driver_name and the driver name are
-the same; this approach is used in several other busses that don't have
-device typing support in the hardware.  The driver and module name should
-match, so hotplug/coldplug mechanisms will modprobe the driver.
+The probe function is called when an entry in the id_table name field
+matches the device's name. It is passed the entry that was matched so
+the driver knows which one in the table matched.
 
 
 Device Creation (Standard driver model)

+ 1 - 1
include/linux/i2c.h

@@ -171,7 +171,7 @@ struct i2c_client {
 	struct i2c_adapter *adapter;	/* the adapter we sit on	*/
 	struct i2c_driver *driver;	/* and our access routines	*/
 	struct device dev;		/* the device structure		*/
-	int irq;			/* irq issued by device (or -1) */
+	int irq;			/* irq issued by device		*/
 	struct list_head list;		/* DEPRECATED */
 	struct completion released;
 };