On Sat, 24 Nov 2012 18:20:08 +0100, Federico Vaga <federico.v...@gmail.com> wrote: > This patch introduce the use of the sysfs attribute for the spidev > configuration. This avoid the user to have a specific program which does > ioctl() on spidev. The user can easily does cat (to read) and echo (to > write) on the sysfs file and configure SPI. > > The patch exports the following attributes: bits-per-word, lsb-first, > mode and speed-hz. > > Example: > # cat /sys/bus/spi/devices/spi1.0/speed-hz > 500000 > # echo 450000 > /sys/bus/spi/devices/spi1.0/speed-hz > # dmesg | tail -n 4 > spidev spi1.0: DEactivate 60, mr 000f0011 > spidev spi1.0: setup: 449447 Hz bpw 8 mode 0x0 -> csr0 0000dd02 > spidev spi1.0: setup mode 0, 8 bits/w, 450000 Hz max --> 0 > spidev spi1.0: 450000 Hz (max) > > Signed-off-by: Federico Vaga <federico.v...@gmail.com>
Not a good idea. sysfs is not a good place for operational interfaces. Please use the spi character devices for direct manipulation of the SPI configuration. g. ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general
