Hi Peter, > On Tue, Sep 22, 2009 at 9:59 AM, Michal Ludvig <mludvig@xxxxxxxxxxxx> wrote: >> Hi all, >> >> I've got a digital IO board sitting on a ISA bus in an industrial x86 >> computer. I've got a simple driver with ioctl interface for toggling the >> IO pins Hi and Low and it works fine. >> >> Now I'm about to develop a bitbanging SPI driver with the use of >> drivers/spi/spi_bitbang.c. Unfortunately I don't understand how to glue >> it with my IO driver, more precisely - how to register a new SPI driver. >> >> The other modules in drivers/spi seem to use platform_driver_register() >> or spi_register_driver() to get their blah_probe() called and then they >> go from there. However, whatever I tried, my _probe() method never gets >> called. The module is as simple as this (remove/exit methods omitted >> from this email): >> > >>From here: > > http://www.mjmwired.net/kernel/Documentation/spi/spi-summary > > it seemed that SPI's internal is very much board specifics, so perhaps > u would like let us know the board identity? > > http://www.linuxforums.org/forum/linux-kernel/143191-question-about-adding-spi-driver-support.html > > This following is a board-specific howto: > > http://www.at91.com/samphpbb/viewtopic.php?f=12&t=18280 The trick was to register the device prior to registering the driver for it. In my module_init function I do: pdev = platform_device_register_simple(DRIVER_NAME, -1, NULL, 0); [...] ret = platform_driver_register(&inro_spi_drv); and that seems to work and calls my _probe(). Michal -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
