Hi all,
I'm using spidev.c to test a SPI controller driver from the user space.
Actually some SPI controller drivers handle a specific
spi_device.controller_data as input in their setup operation, and the
controller driver I'm testing uses this field in its setup operation, if
provided.
The driver spidev.c handles many commands through ioctl but it does not provide
a way to setup a specific controller_data.
I would like to get your opinion about this field usage from the protocol
driver, since I'm not sure to understand the way this field has be used: is it
really supposed to be used by the protocol driver to deliver some controller's
specific setup, or, is it a field we should ignore from the protocol driver
perspective as it is supposed to be only managed by the controller driver if it
needs it ?
Then, I would like to get your opinion about the attached patch I'm using to
get an access to controller_data from the user space. I wrote this patch since
the SPI driver I'm testing handles a specific spi_device.controller_data in its
setup operation. It allows me to provide it from user space through spidev.c.
Thanks
Regards
Mathieu
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