I have seen various examples in the kernel code where a bit is set / cleared in an output port by code like writeb((readb(PBDDR)) & PORTB_PIN0_SDA_INPUT, PBDDR); or uiRegTemp = inl(GPIO_PADDR); outl( uiRegTemp | 0x80, GPIO_PADDR ); This code is not atomic (and in some examples I am guessing it should be). Are there fuctions similar to set_bit, clear_bit, change_bit which work on I/O? if not what is the recomended way to do this? __________________________________ Yahoo! Messenger Show us what our next emoticon should look like. Join the fun. http://www.advision.webevents.yahoo.com/emoticontest -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
