On Sun, 21 Dec 2003, Jean Delvare wrote: > > 1. If wanted in kernel code, have a single scanner in i2c-core > > instead. > > But you finally did not implement that, right? Did not. There was i2cdetect. > > 2. A simple SMBus Quick command may have effect, the most simple i2c > > chip is a relay acting on the R/W bit of the address. Some chip at > > 0x69 (?) locked the bus in the early days (-99), and I think it > > was solved using write, not read address in the bus scan. > > I wasn't there back to these times, but we now use a quick write > command (which, as you know, doesn't really write anything). A quick > look at i2c-ibm_iic.c in Linux 2.6.0 shows that they use one-byte read > instead. Not all chips acknowledge the read address. With the i2c-ibm_iic, I don't see the reason for using one-byte read, if hw could not do quick write a one-byte read is next best choice. -- Ky?sti M?lkki <kyosti.malkki at welho.com>
