This patchset adds basic support for the embedded controller found on older ebook reader boards designed by/with the ODM Netronix Inc.[1] and sold by Kobo or Tolino, for example the Kobo Aura and the Tolino Shine. These drivers are based on information contained in the vendor kernel sources, but in order to all information in a single place, I documented the register interface of the EC on GitHub[2]. [1]: http://www.netronixinc.com/products.aspx?ID=1 [2]: https://github.com/neuschaefer/linux/wiki/Netronix-MSP430-embedded-controller v9: - Fixed a bug in the error handling of ntxec_probe, Reported-by: kernel test robot <lkp@xxxxxxxxx> - Added Thierry Reding's ACK to the PWM patch v8: - https://lore.kernel.org/lkml/20210116194826.3866540-1-j.neuschaefer@xxxxxxx/ - MFD: Add missing module metadata to the core driver - PWM/RTC: Copy dev.of_node from the parent device, to ensure that these devices are linked to the devicetree node v7: - https://lore.kernel.org/lkml/20210109180220.121511-1-j.neuschaefer@xxxxxxx/ - Adjust the RTC patch to a change in the RTC API: rtc_register_device is now devm_rtc_register_device. - Add a #define for the known firmware version (0xd726). Lee Jones suggested doing this in a follow-up patch, but since I'm respinning the series anyway, I'm doing it here. Jonathan Neuschäfer (7): dt-bindings: Add vendor prefix for Netronix, Inc. dt-bindings: mfd: Add binding for Netronix embedded controller mfd: Add base driver for Netronix embedded controller pwm: ntxec: Add driver for PWM function in Netronix EC rtc: New driver for RTC in Netronix embedded controller MAINTAINERS: Add entry for Netronix embedded controller ARM: dts: imx50-kobo-aura: Add Netronix embedded controller .../bindings/mfd/netronix,ntxec.yaml | 76 ++++++ .../devicetree/bindings/vendor-prefixes.yaml | 2 + MAINTAINERS | 9 + arch/arm/boot/dts/imx50-kobo-aura.dts | 16 +- drivers/mfd/Kconfig | 11 + drivers/mfd/Makefile | 1 + drivers/mfd/ntxec.c | 221 ++++++++++++++++++ drivers/pwm/Kconfig | 8 + drivers/pwm/Makefile | 1 + drivers/pwm/pwm-ntxec.c | 184 +++++++++++++++ drivers/rtc/Kconfig | 8 + drivers/rtc/Makefile | 1 + drivers/rtc/rtc-ntxec.c | 145 ++++++++++++ include/linux/mfd/ntxec.h | 37 +++ 14 files changed, 719 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/mfd/netronix,ntxec.yaml create mode 100644 drivers/mfd/ntxec.c create mode 100644 drivers/pwm/pwm-ntxec.c create mode 100644 drivers/rtc/rtc-ntxec.c create mode 100644 include/linux/mfd/ntxec.h -- 2.29.2
