Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

[karo-tx-linux.git] / Documentation / i2c / smbus-protocol

diff --git a/Documentation/i2c/smbus-protocol b/Documentation/i2c/smbus-protocol
index 14d4ec1be2457db04d0f76fe87b3ff323ece9e8a..092d474f5843d1a731834a166be8191b4a8cd8d0 100644 (file)
--- a/Documentation/i2c/smbus-protocol
+++ b/Documentation/i2c/smbus-protocol
@@ -200,10 +200,14 @@ alerting device's address.
 [S] [HostAddr] [Wr] A [DevAddr] A [DataLow] A [DataHigh] A [P]
 
 This is implemented in the following way in the Linux kernel:
-* I2C bus drivers which support SMBus Host Notify should call
-  i2c_setup_smbus_host_notify() to setup SMBus Host Notify support.
-* I2C drivers for devices which can trigger SMBus Host Notify should implement
-  the optional alert() callback.
+* I2C bus drivers which support SMBus Host Notify should report
+  I2C_FUNC_SMBUS_HOST_NOTIFY.
+* I2C bus drivers trigger SMBus Host Notify by a call to
+  i2c_handle_smbus_host_notify().
+* I2C drivers for devices which can trigger SMBus Host Notify will have
+  client->irq assigned to a Host Notify IRQ if noone else specified an other.
+
+There is currently no way to retrieve the data parameter from the client.
 
 
 Packet Error Checking (PEC)