Hello guys. I didn't get a response the last time so hopefully with
3.11 out I'll get one this time.
I need to be able to generate interrupts from a USB device driver while
servicing the complete() function of an interrupt URB. While I realize
that this may seem strange, the purpose is for a USB to SPI/GPIO bridge
chip (the MCP2210). When something happens on the remote device where a
chip is expecting it's interrupt out pin to trigger an interrupt on some
local (to the board) microcontroller, the MCP2210 instead receives that
signal and communicates it to the host the next time it's queried. This
is the interrupt that I need to, in effect propagate locally. Since my
spi_master and gpio_chip are all functioning now, this is the last step
to get one of my spi protocol drivers working correctly.
I've been reading up on Documentation/IRQ-domain.txt, but IRQ
controllers are all new to me and there's a lot for me to learn, so I
just want to make sure I'm going down the correct path. Is the correct
method to create an IRQ domain with irq_domain_add_linear() or some
such? I can figure it out eventually, but if somebody can point me in
the right direction, it can save me a WHOLE lot of time.
Thanks in advance
Daniel
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