Bitbanged SPI over GPIO probe fail

Hi list,

I'm trying to use the bitbanged spi_gpio.c driver on a Beagleboard, using the inlined approach (defining gpio pin numbers and cs).

When modprobing the driver platform_driver_probe returns -ENODEV but spi_gpio_probe is not being called, which seems odd to me. Any suggestions?

This is on a 2.6.32 TI PSP kernel.

There is in fact no device attached on the pins, but as the driver's probe function isn't called I don't think it should matter. Also, I have checked that I can manually control the pins through /sys/class/gpio.

Thanks,
Orjan

Orjan Friberg
FlatFrog Laboratories AB

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This part I still don't understand, but I can at least insmod the driver by changing platform_driver_probe to platform_driver_register; it shows up in /sys/bus/platform/drivers now too.

(I get that I need to call platform_driver_register and create a sysfs entry etc before I have a device to play with.)

Orjan Friberg
FlatFrog Laboratories AB

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