linux-kernel - [PATCH v4 0/2] Add Qualcomm MPM irqchip driver support

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Message-Id: <20211206092535.4476-1-shawn.guo@linaro.org>
Date:   Mon,  6 Dec 2021 17:25:33 +0800
From:   Shawn Guo <shawn.guo@...aro.org>
To:     Marc Zyngier <maz@...nel.org>, Thomas Gleixner <tglx@...utronix.de>
Cc:     Maulik Shah <quic_mkshah@...cinc.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Loic Poulain <loic.poulain@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Shawn Guo <shawn.guo@...aro.org>
Subject: [PATCH v4 0/2] Add Qualcomm MPM irqchip driver support

It adds DT binding and driver support for Qualcomm MPM (MSM Power Manager)
interrupt controller.

Changes for v4:
- Add the missing include of <linux/interrupt.h> to fix build errors
  on arm architecture.
- Leave IRQCHIP_PLATFORM_DRIVER infrastructural unchanged, and use
  of_find_device_by_node() to get platform_device pointer.

Changes for v3:
- Support module build
- Use relaxed accessors
- Add barrier call to ensure MMIO write completes
- Use d->chip_data to pass driver private data
- Use raw spinlock
- USe BIT() for bit shift
- Create a single irq domain to cover both types of MPM pins
- Call irq_resolve_mapping() to find out Linux irq number
- Save the use of ternary conditional operator and use switch/case for
  .irq_set_type call
- Drop unnecessary .irq_disable hook
- Align qcom_mpm_chip and qcom_mpm_ops members vertically
- Use helper irq_domain_translate_twocell()
- Move mailbox requesting forward in probe function
- Improve the documentation on qcm2290_gic_pins[]
- Use IRQCHIP_PLATFORM_DRIVER infrastructural
- Use cpu_pm notifier instead of .suspend_late hook to write MPM for
  sleep, so that MPM can be set up for both suspend and idle context.
  The TIMER0/1 setup is currently omitted for idle use case though,
  as I haven't been able to successfully test the idle context.

Shawn Guo (2):
  dt-bindings: interrupt-controller: Add Qualcomm MPM support
  irqchip: Add Qualcomm MPM controller driver

 .../interrupt-controller/qcom,mpm.yaml        |  72 +++
 drivers/irqchip/Kconfig                       |   8 +
 drivers/irqchip/Makefile                      |   1 +
 drivers/irqchip/qcom-mpm.c                    | 480 ++++++++++++++++++
 4 files changed, 561 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/qcom,mpm.yaml
 create mode 100644 drivers/irqchip/qcom-mpm.c

-- 
2.17.1