On Thu, Nov 1, 2012 at 5:26 PM, Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote: >> Hello, the next question that I have is how to handle the interrupts >> on this UART. It has a more complex interrupt scheme than a >> traditional 8250 UART. There is a global ISR register that tells you >> which port had the interrupt and then there is another set of >> registers that hold the actual interrupts. > > port->handle_irq is half of what you need, but you probably need to be > able to hook serial8250_interruot and provide your own alternative. Given > you don't need the irq chain handling either probably the bit that wants > to be hookable is the calls to serial_link_irq_chain and > serial_unlink_irq_chain in the startup/shutdown methods. > > In yor case all that and all the irq scanning the chain becomes a simple > read of the port and call of the handlers (serial8250_handlee_irq(port, > iir) To be clear, I shouldn't put a custom irq handler inside 8250.c, correct? I would want to do something along the vein of 8250_dw.c with a custom probe and a custome handle_irq? Matt Schulte -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
