Re: [PATCH v4 00/24] Improve IRQ wake capability reporting and update the cros_ec driver to use it

[Matthias Brugger]

On 02/01/2024 22:07, Mark Hasemeyer wrote:
> Currently the cros_ec driver assumes that its associated interrupt is
> wake capable. This is an incorrect assumption as some Chromebooks use a
> separate wake pin, while others overload the interrupt for wake and IO.
> This patch train updates the driver to query the underlying ACPI/DT data
> to determine whether or not the IRQ should be enabled for wake.
>
> Both the device tree and ACPI systems have methods for reporting IRQ
> wake capability. In device tree based systems, a node can advertise
> itself as a 'wakeup-source'. In ACPI based systems, GpioInt and
> Interrupt resource descriptors can use the 'SharedAndWake' or
> 'ExclusiveAndWake' share types.
>
> Some logic is added to the platform, ACPI, and DT subsystems to more
> easily pipe wakeirq information up to the driver.

Patch 9, 10, 11 and 12 applied to the mediatek tree.

Thanks!


> Changes in v4:
> -Rebase on linux-next
> -See each patch for patch specific changes
>
> Changes in v3:
> -Rebase on linux-next
> -See each patch for patch specific changes
>
> Changes in v2:
> -Rebase on linux-next
> -Add cover letter
> -See each patch for patch specific changes
>
> Mark Hasemeyer (24):
>    resource: Add DEFINE_RES_*_NAMED_FLAGS macro
>    gpiolib: acpi: Modify acpi_dev_irq_wake_get_by() to use resource
>    i2c: acpi: Modify i2c_acpi_get_irq() to use resource
>    dt-bindings: power: Clarify wording for wakeup-source property
>    ARM: dts: tegra: Enable cros-ec-spi as wake source
>    ARM: dts: rockchip: rk3288: Enable cros-ec-spi as wake source
>    ARM: dts: samsung: exynos5420: Enable cros-ec-spi as wake source
>    ARM: dts: samsung: exynos5800: Enable cros-ec-spi as wake source
>    arm64: dts: mediatek: mt8173: Enable cros-ec-spi as wake source
>    arm64: dts: mediatek: mt8183: Enable cros-ec-spi as wake source
>    arm64: dts: mediatek: mt8192: Enable cros-ec-spi as wake source
>    arm64: dts: mediatek: mt8195: Enable cros-ec-spi as wake source
>    arm64: dts: tegra: Enable cros-ec-spi as wake source
>    arm64: dts: qcom: sc7180: Enable cros-ec-spi as wake source
>    arm64: dts: qcom: sc7280: Enable cros-ec-spi as wake source
>    arm64: dts: qcom: sdm845: Enable cros-ec-spi as wake source
>    arm64: dts: rockchip: rk3399: Enable cros-ec-spi as wake source
>    of: irq: add wake capable bit to of_irq_resource()
>    of: irq: Add default implementation for of_irq_to_resource()
>    of: irq: Remove extern from function declarations
>    device property: Modify fwnode irq_get() to use resource
>    device property: Update functions to use EXPORT_SYMBOL_GPL()
>    platform: Modify platform_get_irq_optional() to use resource
>    platform/chrome: cros_ec: Use PM subsystem to manage wakeirq
>
>   .../bindings/power/wakeup-source.txt          | 18 ++--
>   arch/arm/boot/dts/nvidia/tegra124-nyan.dtsi   |  1 +
>   arch/arm/boot/dts/nvidia/tegra124-venice2.dts |  1 +
>   .../rockchip/rk3288-veyron-chromebook.dtsi    |  1 +
>   .../boot/dts/samsung/exynos5420-peach-pit.dts |  1 +
>   .../boot/dts/samsung/exynos5800-peach-pi.dts  |  1 +
>   arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi  |  1 +
>   .../arm64/boot/dts/mediatek/mt8183-kukui.dtsi |  1 +
>   .../boot/dts/mediatek/mt8192-asurada.dtsi     |  1 +
>   .../boot/dts/mediatek/mt8195-cherry.dtsi      |  1 +
>   .../arm64/boot/dts/nvidia/tegra132-norrin.dts |  1 +
>   arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi  |  1 +
>   .../arm64/boot/dts/qcom/sc7280-herobrine.dtsi |  1 +
>   .../arm64/boot/dts/qcom/sc7280-idp-ec-h1.dtsi |  1 +
>   arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi    |  1 +
>   arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi  |  1 +
>   drivers/acpi/property.c                       | 11 ++-
>   drivers/base/platform.c                       | 90 ++++++++++++-------
>   drivers/base/property.c                       | 40 ++++++---
>   drivers/gpio/gpiolib-acpi.c                   | 28 ++++--
>   drivers/i2c/i2c-core-acpi.c                   | 43 ++++-----
>   drivers/i2c/i2c-core-base.c                   |  6 +-
>   drivers/i2c/i2c-core.h                        |  4 +-
>   drivers/of/irq.c                              | 39 +++++++-
>   drivers/of/property.c                         |  8 +-
>   drivers/platform/chrome/cros_ec.c             | 48 ++++++++--
>   drivers/platform/chrome/cros_ec_lpc.c         | 40 +++++++--
>   drivers/platform/chrome/cros_ec_spi.c         | 15 ++--
>   drivers/platform/chrome/cros_ec_uart.c        | 14 ++-
>   include/linux/acpi.h                          | 25 +++---
>   include/linux/fwnode.h                        |  8 +-
>   include/linux/ioport.h                        | 20 +++--
>   include/linux/of_irq.h                        | 41 +++++----
>   include/linux/platform_data/cros_ec_proto.h   |  4 +-
>   include/linux/platform_device.h               |  3 +
>   include/linux/property.h                      |  2 +
>   36 files changed, 350 insertions(+), 172 deletions(-)