tree f0580d8d1531608020874ddb30e06dd690ecefa9
parent 5e69b945f20aec17bf057acbb61b6682461e7149
author Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com> 1197388370 +0100
committer Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com> 1206952391 +0200

ns9xxx: add support for irq priorisation

prio2irq(0) is the highest prioritized interrupt.  For now there is no
binary change intended.

If you intend to change the priorisation, you have to assert:

	∀ x ∈ {0, 1, ⋯ 31}: (irq2prio ∘ prio2irq)(x) = x

Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>