From: Jon Hunter <jonathanh@nvidia.com>
To: Thomas Gleixner <tglx@linutronix.de>,
Jason Cooper <jason@lakedaemon.net>,
Marc Zyngier <marc.zyngier@arm.com>,
Jiang Liu <jiang.liu@linux.intel.com>,
Stephen Warren <swarren@wwwdotorg.org>,
Thierry Reding <thierry.reding@gmail.com>
Cc: Kevin Hilman <khilman@kernel.org>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Grygorii Strashko <grygorii.strashko@ti.com>,
Lars-Peter Clausen <lars@metafoo.de>,
Linus Walleij <linus.walleij@linaro.org>,
Soren Brinkmann <soren.brinkmann@xilinx.com>,
linux-kernel@vger.kernel.org, <linux-tegra@vger.kernel.org>,
Jon Hunter <jonathanh@nvidia.com>
Subject: [RFC PATCH V2 0/8] Add support for Tegra210 AGIC
Date: Thu, 17 Dec 2015 10:48:21 +0000 [thread overview]
Message-ID: <1450349309-8107-1-git-send-email-jonathanh@nvidia.com> (raw)
The Tegra210 AGIC interrupt controller is a 2nd level interrupt controller
located in a separate power domain to the main GIC interrupt controller.
It can route interrupts to the main CPU cluster or an Audio DSP slave.
Ideally we would like to re-use the existing ARM GIC driver because the
AGIC is a GIC-400. However, in order to do so this requires a few
significant changes to the exisiting GIC driver for power management
reasons.
The purpose of this RFC-V2 is to get some feedback on the approach and see
if we can support the AGIC in this way or if a separate driver is
warranted for this device.
Please note that this RFC does not address the issue of interrupt routing.
Ideally I was thinking that having a mechanism/API to migrate an interrupt
from the CPU cluster to the DSP would make sense, however, I don't believe
this is supported today in the kernel. Would such an approach be acceptable
or if not, is there a better way to handle this?
Changes from V1:
- Prevent IRQ mapping from setting the IRQ type and only program the
type when allocating the IRQ.
- Resolved some __init section conflicts found with V1 series.
Jon Hunter (8):
irqdomain: Ensure type settings match for an existing mapping
irqdomain: Don't set type when mapping an IRQ
genirq: Add runtime power management support for IRQ chips
irqchip/gic: Don't initialise chip if mapping IO space fails
irqchip/gic: Return an error if GIC initialisation fails
irqchip/gic: Assign irqchip dynamically
irqchip/gic: Prepare for adding platform driver
irqchip/gic: Add support for tegra AGIC interrupt controller
drivers/irqchip/irq-gic-common.c | 4 +-
drivers/irqchip/irq-gic.c | 473 ++++++++++++++++++++++++++++-----------
include/linux/irq.h | 4 +
kernel/irq/internals.h | 24 ++
kernel/irq/irqdomain.c | 76 +++++--
kernel/irq/manage.c | 14 ++
6 files changed, 447 insertions(+), 148 deletions(-)
--
2.1.4
next reply other threads:[~2015-12-17 10:51 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-17 10:48 Jon Hunter [this message]
2015-12-17 10:48 ` [RFC PATCH V2 1/8] irqdomain: Ensure type settings match for an existing mapping Jon Hunter
2015-12-17 13:16 ` Linus Walleij
2015-12-18 10:10 ` Jon Hunter
2015-12-22 9:58 ` Linus Walleij
2015-12-22 10:00 ` Linus Walleij
2015-12-22 11:27 ` Jon Hunter
2015-12-22 11:31 ` Grygorii Strashko
2015-12-17 10:48 ` [RFC PATCH V2 2/8] irqdomain: Don't set type when mapping an IRQ Jon Hunter
2015-12-17 12:18 ` Linus Walleij
2015-12-22 11:18 ` Grygorii Strashko
2015-12-22 11:56 ` Jon Hunter
2016-03-18 9:16 ` Geert Uytterhoeven
2015-12-17 10:48 ` [RFC PATCH V2 3/8] genirq: Add runtime power management support for IRQ chips Jon Hunter
2015-12-17 13:19 ` Linus Walleij
2015-12-18 10:20 ` Jon Hunter
2016-01-12 18:40 ` Grygorii Strashko
2016-01-12 21:43 ` Sören Brinkmann
2016-01-18 14:47 ` Ulf Hansson
2016-01-19 10:43 ` Jon Hunter
2016-01-20 15:30 ` Thomas Gleixner
2016-01-21 8:38 ` Jon Hunter
2016-01-21 12:40 ` Ulf Hansson
2016-01-21 19:51 ` Thomas Gleixner
2016-01-22 11:08 ` Ulf Hansson
2016-01-26 17:17 ` Thomas Gleixner
2016-02-05 14:37 ` Linus Walleij
2016-03-18 13:57 ` Grygorii Strashko
2015-12-17 10:48 ` [RFC PATCH V2 4/8] irqchip/gic: Don't initialise chip if mapping IO space fails Jon Hunter
2015-12-17 13:21 ` Linus Walleij
2015-12-17 10:48 ` [RFC PATCH V2 5/8] irqchip/gic: Return an error if GIC initialisation fails Jon Hunter
2015-12-17 13:26 ` Linus Walleij
2015-12-18 10:24 ` Jon Hunter
2015-12-17 10:48 ` [RFC PATCH V2 6/8] irqchip/gic: Assign irqchip dynamically Jon Hunter
2015-12-17 11:00 ` Marc Zyngier
2015-12-18 10:26 ` Jon Hunter
2015-12-17 10:48 ` [RFC PATCH V2 7/8] irqchip/gic: Prepare for adding platform driver Jon Hunter
2015-12-17 10:48 ` [RFC PATCH V2 8/8] irqchip/gic: Add support for tegra AGIC interrupt controller Jon Hunter
2015-12-17 10:58 ` Jon Hunter
2015-12-17 13:32 ` Linus Walleij
2015-12-18 10:44 ` Jon Hunter
2015-12-22 10:03 ` Linus Walleij
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1450349309-8107-1-git-send-email-jonathanh@nvidia.com \
--to=jonathanh@nvidia.com \
--cc=geert@linux-m68k.org \
--cc=grygorii.strashko@ti.com \
--cc=jason@lakedaemon.net \
--cc=jiang.liu@linux.intel.com \
--cc=khilman@kernel.org \
--cc=lars@metafoo.de \
--cc=linus.walleij@linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-tegra@vger.kernel.org \
--cc=marc.zyngier@arm.com \
--cc=soren.brinkmann@xilinx.com \
--cc=swarren@wwwdotorg.org \
--cc=tglx@linutronix.de \
--cc=thierry.reding@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).