[PATCH V10 0/3] irqchip: qcom: Add IRQ combiner driver - Agustin Vega-Frias

From: Agustin Vega-Frias <agustinv@codeaurora.org>
To: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, rjw@rjwysocki.net,
	lenb@kernel.org, tglx@linutronix.de, jason@lakedaemon.net,
	marc.zyngier@arm.com
Cc: harba@codeaurora.org, lorenzo.pieralisi@arm.com,
	graeme.gregory@linaro.org, jcm@redhat.com, timur@codeaurora.org,
	msalter@redhat.com, guohanjun@huawei.com, astone@redhat.com,
	mlangsdo@redhat.com, cov@codeaurora.org, agross@codeaurora.org,
	Agustin Vega-Frias <agustinv@codeaurora.org>,
	ahs3@redhat.com, charles.garcia-tobin@arm.com
Subject: [PATCH V10 0/3] irqchip: qcom: Add IRQ combiner driver
Date: Wed, 18 Jan 2017 11:46:25 -0500	[thread overview]
Message-ID: <1484757988-23739-1-git-send-email-agustinv@codeaurora.org> (raw)

Add support for IRQ combiners in the Top-level Control and Status
Registers (TCSR) hardware block in Qualcomm Technologies chips.

The first patch prevents the ACPI core from attempting to map IRQ resources
with a valid ResourceSource as GSIs.

The second patch adds support for ResourceSource/IRQ domain mapping and
fixes IRQ probe deferral by allowing platform_device IRQ resources to be
re-initialized from the corresponding ACPI IRQ resource.

Both changes described above are conditional on the ACPI_GENERIC_GSI config.

The third patch takes advantage of the new capabilities to implement
the driver for the IRQ combiners.

Tested on top of v4.10-rc4.

Changes V9 -> V10:
* Add checks for the producer_consumer field to not use produced IRQ
  resources as consumed.
* Minor bug fixes in the driver.

Changes V8 -> V9:
* Do not attempt the mapping for non-GSI IRQs during bus scan.
* Make some public APIs private to drivers/acpi/irq.c since they are no
  longer used on other modules.

Changes V7 -> V8:
* Reorder patches to allow all new code to be under drivers/acpi/irq.c.
* Change acpi_irq_get implementation to be more similar to of_irq_get
  to improve maintainability.

Agustin Vega-Frias (3):
  ACPI: Generic GSI: Do not attempt to map non-GSI IRQs during bus scan
  ACPI: Add support for ResourceSource/IRQ domain mapping
  irqchip: qcom: Add IRQ combiner driver

 drivers/acpi/Makefile               |   2 +-
 drivers/acpi/gsi.c                  |  98 -----------
 drivers/acpi/irq.c                  | 282 +++++++++++++++++++++++++++++++
 drivers/acpi/resource.c             |  18 +-
 drivers/base/platform.c             |   9 +-
 drivers/irqchip/Kconfig             |   9 +
 drivers/irqchip/Makefile            |   1 +
 drivers/irqchip/qcom-irq-combiner.c | 319 ++++++++++++++++++++++++++++++++++++
 include/linux/acpi.h                |  10 ++
 9 files changed, 647 insertions(+), 101 deletions(-)
 delete mode 100644 drivers/acpi/gsi.c
 create mode 100644 drivers/acpi/irq.c
 create mode 100644 drivers/irqchip/qcom-irq-combiner.c

--
Qualcomm Datacenter Technologies, Inc. on behalf of the Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.