[PATCH V4 0/2] irqchip: qcom: Add IRQ combiner driver

From: Agustin Vega-Frias
Date: Mon Oct 17 2016 - 17:03:35 EST

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

The first patch adds support for ResourceSource/IRQ domain mapping
when using Extended IRQ Resources with a specific ResourceSource.
The core ACPI resource management code has been changed to lookup
the IRQ domain when an IRQ resource indicates a ResourceSource,
and register the IRQ on that domain, instead of a GSI.

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

Changes V1 -> V2:
* Remove use of GPIO library for the combiner
* Refactor to use fwnode/ResourceSource to IRQ domain mapping
introduced in ACPI core

Changes V2 -> V3:
* Removed parsing of _PRS to find IRQs
* Removed acpi_irq_domain_create and acpi_irq_domain_remove

Changes V3 -> V3:
* Add a DSDT device probe table that is used to probe DSDT IRQ chips
as necessary when converting HW IRQs to Linux IRQs
* Describe IRQ combiner registers as ACPI Register resources

Agustin Vega-Frias (2):
ACPI: Add support for ResourceSource/IRQ domain mapping
irqchip: qcom: Add IRQ combiner driver

drivers/acpi/Makefile | 1 +
drivers/acpi/irqdomain.c | 135 +++++++++++++++
drivers/acpi/resource.c | 21 ++-
drivers/irqchip/Kconfig | 8 +
drivers/irqchip/Makefile | 1 +
drivers/irqchip/qcom-irq-combiner.c | 332 ++++++++++++++++++++++++++++++++++++
include/asm-generic/vmlinux.lds.h | 1 +
include/linux/acpi.h | 50 ++++++
include/linux/irqchip.h | 17 +-
9 files changed, 554 insertions(+), 12 deletions(-)
create mode 100644 drivers/acpi/irqdomain.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.