Thanks for the info Mark - geoff -----Original Message----- From: Mark Studebaker [mailto:mds at paradyne.com] Sent: Thursday, October 02, 2003 4:33 PM To: Geoff Goldberg Cc: 'lm78 at stimpy.netroedge.com' Subject: Re: Driving non-smbus i2c chip given I2C_FUNC_SMBUS_EMUL adapter driver Geoff Goldberg wrote: > > Greetings, > > I read through the docs and FAQ and some driver code but could not determine > how to communicate with my i2c chip from my chip driver. > > I'm working with an embedded system that has the following: > > * i2c adapter > * i2c device (not indicated to be smbus-compatible in the data sheet) > * i2c-algo-<arch>.o > * i2c-adap-<arch>.o > > and I need to create chip drivers for the non-smbus i2c device. > > Also given: > > * the existing bus driver functionality doesn't include I2C_FUNC_I2C > (only I2C_FUNC_SMBUS_EMUL and a couple of other flags) > * In the adapter algo driver, master_xfer is implemented, smbus_xfer > is NULL > > My question is this: > > Can my chip driver reliably use i2c calls (i2c_master_send, > i2c_master_receive, etc)? no > Can it reliably use i2c_smbus_xxx() calls? yes, subject to the capabilities of the i2c device.
