And another small update. ;) Am 11.09.2013 09:16, schrieb Alexander Holler:
To summarize what happens if a driver uses a gpio as irq: gpio_request() // This works only if the gpio was not requested before gpio_direction_input() gpio_to_irq() // This needs an irq-mapping request_threaded_irq() So I would suggest multiple steps to change that: 1. Create a mapping for every gpio found in DT (or all gpios if no DT is used). I think that is what Linus patch does (sorry, I haven't really followed this thread and didn't look in deep at the patch). 2. Implement gpio_request_for_irq() This would just be a small macro for gpio_request(); gpio_direction_input()
I would add gpio_to_irq() to that macro, so that it returns the irq number or zero if something failed.
Regards, Alexander Holler -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
