Menu
I am aware of I2C in a very basic level which relies inside linux kernel, but no clue to implement a basic I2C driver.
Trying to moving for a start in I2C device driver. could you please suggest any beginner tutorial with source code mapping !!
677
I2C device drivers using this binding model work just like any other kind of driver in Linux: they provide a probe() method to bind to those devices, and a remove() method to unbind. static int foo_probe(struct i2c_client *client); static int foo_remove(struct i2c_client *client);
An I2C “Adapter Driver” abstracts the controller hardware; it binds to a physical device (perhaps a PCI device or platform_device) and exposes a struct i2c_adapter representing each I2C bus segment it manages. On each I2C bus segment will be I2C devices represented by a struct i2c_client .
This month, we discuss what the I2C subsystem does and how to write a driver for it. I2C is the name for a two-wire serial bus protocol originally developed by Phillips. It commonly is used in embedded systems so different components can communicate; PC motherboards use I2C to talk to different sensor chips.
linux-source/Documentation/i2c/ has lot of the information you'd need. .../writing-clients.txt is a good place to start.
Have a look at the online version:
https://www.kernel.org/doc/Documentation/i2c/writing-clients
There is an okay sort of a tutorial at:
http://renjucnair.blogspot.ca/2012/01/writing-i2c-client-driver.html
Here is a good commentary on someone writing an i2c driver and has a tutorial feel to it:
http://www.embedded-bits.co.uk/2009/i2c-in-the-2632-linux-kernel/
Here is some sample code:
http://code.google.com/p/ldd-templates/source/browse/drivers/i2c/sample-i2c-client.c
138
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
