Hi! I am trying to access a SMBus device that is supposed to be connected to SMBus. The hardware uses a SiS96x chipset SMBus controller and the SiS SMBus driver loads fine, SMBus is detected properly. My SMBus device is supposed to listen to address 0x92 which is quite obviously a 10-bit address. The device is a custom programmed PIC controller that controls a small display. By writing byte values to the PIC it will display something on the display. All my tries failed so far. I have to admit that I only tried a userspace approach, i.e. through i2c-dev. Everything I get is "Operation not permitted". My test application is attached if anyone wants to have a look at the nonsense I am trying ;) I have looked the kernel i2c drivers up and down and cannot find any hint why the write call fails, especially with the above error. Oh yes, I am using a vanilla 2.6.7 kernel, i.e. no additional patches applied. Any hint is greatly appreciated since I am quite desperate by now. Many thanks in advance! Regards nils faerber -- kernel concepts Tel: +49-271-771091-12 Dreisbachstr. 24 Fax: +49-271-771091-19 D-57250 Netphen Mob: +49-176-21024535 -- -------------- next part -------------- A non-text attachment was scrubbed... Name: pictest.c Type: text/x-csrc Size: 1467 bytes Desc: not available Url : http://lists.lm-sensors.org/pipermail/lm-sensors/attachments/20040910/435b7e91/attachment.bin
