Hello Andy, Hans, Ilpo, Arnd, Gregory, and others, this is v10 of the series adding Turris Omnia MCU driver. This series still depends on the immutable branch between LEDs and locking, introducing devm_mutex_init(), see the PR https://lore.kernel.org/linux-leds/20240412084616.GR2399047@xxxxxxxxxx/ See also cover letters for v1 to v9: https://patchwork.kernel.org/project/linux-soc/cover/20230823161012.6986-1-kabel@xxxxxxxxxx/ https://patchwork.kernel.org/project/linux-soc/cover/20230919103815.16818-1-kabel@xxxxxxxxxx/ https://patchwork.kernel.org/project/linux-soc/cover/20231023143130.11602-1-kabel@xxxxxxxxxx/ https://patchwork.kernel.org/project/linux-soc/cover/20231026161803.16750-1-kabel@xxxxxxxxxx/ https://patchwork.kernel.org/project/linux-soc/cover/20240323164359.21642-1-kabel@xxxxxxxxxx/ https://patchwork.kernel.org/project/linux-soc/cover/20240418121116.22184-1-kabel@xxxxxxxxxx/ https://patchwork.kernel.org/project/linux-soc/cover/20240424173809.7214-1-kabel@xxxxxxxxxx/ https://patchwork.kernel.org/project/linux-soc/cover/20240430115111.3453-1-kabel@xxxxxxxxxx/ https://patchwork.kernel.org/project/linux-soc/cover/20240508103118.23345-1-kabel@xxxxxxxxxx/ Changes since v9: - in functions where mcu->client is referred to multiple times added a helper variable client = mcu->client, suggested by Andy - changed instances of if (!err) do_something; return err; patterns to the more traditional pattern if (err) return err; do_something; return 0; as suggested by Andy - fixed some typos reported by Andy - changed crc32_be(0xffffffff, ...) to crc32_be(~0, ...), as suggested by Andy - changed to use the DECI unit macro from units.h instead of hardcoded 10, as suggested by Andy - changed -EINTR to -ERESTARTSYS in trng read and signature read - changed the mutex lock in signature read to interruptible mutex lock, as pointed out by Andy Marek Behún (9): dt-bindings: firmware: add cznic,turris-omnia-mcu binding platform: cznic: Add preliminary support for Turris Omnia MCU platform: cznic: turris-omnia-mcu: Add support for MCU connected GPIOs platform: cznic: turris-omnia-mcu: Add support for poweroff and wakeup platform: cznic: turris-omnia-mcu: Add support for MCU watchdog platform: cznic: turris-omnia-mcu: Add support for MCU provided TRNG platform: cznic: turris-omnia-mcu: Add support for digital message signing via debugfs ARM: dts: turris-omnia: Add MCU system-controller node ARM: dts: turris-omnia: Add GPIO key node for front button .../ABI/testing/debugfs-turris-omnia-mcu | 13 + .../sysfs-bus-i2c-devices-turris-omnia-mcu | 126 ++ .../firmware/cznic,turris-omnia-mcu.yaml | 86 ++ MAINTAINERS | 5 + .../dts/marvell/armada-385-turris-omnia.dts | 35 +- drivers/platform/Kconfig | 2 + drivers/platform/Makefile | 1 + drivers/platform/cznic/Kconfig | 50 + drivers/platform/cznic/Makefile | 9 + .../platform/cznic/turris-omnia-mcu-base.c | 450 +++++++ .../platform/cznic/turris-omnia-mcu-debugfs.c | 208 ++++ .../platform/cznic/turris-omnia-mcu-gpio.c | 1039 +++++++++++++++++ .../cznic/turris-omnia-mcu-sys-off-wakeup.c | 257 ++++ .../platform/cznic/turris-omnia-mcu-trng.c | 103 ++ .../cznic/turris-omnia-mcu-watchdog.c | 128 ++ drivers/platform/cznic/turris-omnia-mcu.h | 216 ++++ include/linux/turris-omnia-mcu-interface.h | 249 ++++ 17 files changed, 2976 insertions(+), 1 deletion(-) create mode 100644 Documentation/ABI/testing/debugfs-turris-omnia-mcu create mode 100644 Documentation/ABI/testing/sysfs-bus-i2c-devices-turris-omnia-mcu create mode 100644 Documentation/devicetree/bindings/firmware/cznic,turris-omnia-mcu.yaml create mode 100644 drivers/platform/cznic/Kconfig create mode 100644 drivers/platform/cznic/Makefile create mode 100644 drivers/platform/cznic/turris-omnia-mcu-base.c create mode 100644 drivers/platform/cznic/turris-omnia-mcu-debugfs.c create mode 100644 drivers/platform/cznic/turris-omnia-mcu-gpio.c create mode 100644 drivers/platform/cznic/turris-omnia-mcu-sys-off-wakeup.c create mode 100644 drivers/platform/cznic/turris-omnia-mcu-trng.c create mode 100644 drivers/platform/cznic/turris-omnia-mcu-watchdog.c create mode 100644 drivers/platform/cznic/turris-omnia-mcu.h create mode 100644 include/linux/turris-omnia-mcu-interface.h -- 2.43.2
