linux-kernel - [PATCH v7 0/2] Add support for Layerscape external interrupt lines

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Date:   Thu,  7 Nov 2019 13:21:13 +0100
From:   Rasmus Villemoes <linux@...musvillemoes.dk>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <maz@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Cc:     Rasmus Villemoes <linux@...musvillemoes.dk>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Kurt Kanzenbach <kurt@...utronix.de>
Subject: [PATCH v7 0/2] Add support for Layerscape external interrupt lines

In v7, I've tried to change from a custom binding to use
interrupt-map, modelled on the recent addition of the
renesas,rza1-irqc (commits a644ccb819bc and 5e27a314a11f). It's
possible that the interrupt-map parsing code can be factored to a
common helper, but it's a bit hard to generalize from two examples to
know what a good interface would look like.

The interrupt-map-mask is a bit arbitrary. 0xff would likely work just
as well (but I think the ls2088a has 32 external lines, so it has to
be a least 0x1f).

Also, this drops the fsl,bit-reverse property and instead reads the
SCFGREVCR register to determine if bit-reversing is needed.

The dt/bindings patch now comes first in accordance with
Documentation/devicetree/bindings/submitting-patches.txt.

Earlier versions can be found here:

v6: https://lore.kernel.org/lkml/20190923101513.32719-1-kurt@linutronix.de/
v5: https://lore.kernel.org/lkml/20180223210901.23480-1-rasmus.villemoes@prevas.dk/

Rasmus Villemoes (2):
  dt/bindings: Add bindings for Layerscape external irqs
  irqchip: add support for Layerscape external interrupt lines

 .../interrupt-controller/fsl,ls-extirq.txt    |  49 +++++
 drivers/irqchip/Kconfig                       |   4 +
 drivers/irqchip/Makefile                      |   1 +
 drivers/irqchip/irq-ls-extirq.c               | 197 ++++++++++++++++++
 4 files changed, 251 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/fsl,ls-extirq.txt
 create mode 100644 drivers/irqchip/irq-ls-extirq.c

-- 
2.23.0