Hi
I have read an article on www.linuxjournal.com on i2c driver.I have a question on that.
The article defines
static struct i2c_algorithm tiny_algorithm = {
.name = "tiny algorithm",
.id = I2C_ALGO_SMBUS,
.smbus_xfer = tiny_access,
.functionality = tiny_func,
};
and also
static u32 tiny_func(struct i2c_adapter *adapter)
{
return I2C_FUNC_SMBUS_QUICK |
I2C_FUNC_SMBUS_BYTE |
I2C_FUNC_SMBUS_BYTE_DATA |
I2C_FUNC_SMBUS_WORD_DATA |
I2C_FUNC_SMBUS_BLOCK_DATA;
}
what do the macros I2C_FUNC_SMBUS_QUICK ,I2C_FUNC_SMBUS_BYTE etc mean?Do they mean in what form data is sent
,eg I2C_FUNC_SMBUS_QUICK means quick data transfer and I2C_FUNC_SMBUS_BYTE means data transfer in units of bytes ?
Am I right?
My question is : On basis is it decided in which type of message a particular driver will support,what values should be returned by tiny_func function ? does it depend on hardware configuration?
Request you to clear my doubt.I will be very grateful
Thanks and Regards
Akshay Arwind Pujari
