Hi all, I have written custom driver for accessing a device sitting on the I2C bus of IBM 440GP. I am operating in the master mode of I2C controller of 440GP. I was able to write a particular value onto the device register. But when I try to read the value back, it is returning 0. I have disabled the interrupts.
When I was debugging, I found that data was arriving on the I2C bus. But before I could read the Master Data Buffer Register of 440 GP, the register is getting cleared. Does anyone no why? Pls help me. I am stuck. Thanks and regards, vishwa ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/