Hi, > > indicate the register within the PMIC to read/write. On the other hand, > > the standard read and write functions only take 3 parameters (device, > > buffer, buffersize). How do I pass that offset to these functions ? How > > do I use the PMIC device driver ? > > (Maybe this is a general Linux device driver question, but I'm not that > > familiar with device drivers, so...) I'd be using the pmic_read_reg and pmic_write_reg functions (they should be renamed and exported first though.) Have a look at the mc13892 driver .. > > > > Is it the best way to do it like this (open, read, write), or do I better > > call those functions directly ? (I have to set the PMIC registers in the > > "late_init" function of the barebox startup sequence) ... and the freescale-mx35-3stack for example. > > [Filip] Think I found how it works. I have to use the normal read, write > and lseek functions to read/write PMIC registers. As I said above, I reckon your board code will be cleaner if you skip the file I/O and use the _read_reg and _write_reg functions directly. > The 'offset' and 'flag' > parameters in read and write functions are for internal use only. Correct. > When reading, an internal index is incremented. A following read starts > where the previous ended. With lseek, one can move that index to address > the correct register. Right ? In general, yes. HTH, Cheers Marc > > _______________________________________________ > barebox mailing list > barebox@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/barebox _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
