Hi all, Here's updated version of n_gsm serdev support with related MFD driver for the modem found on Motorola Mapphone phones and tablets like droid4. This series only adds basic character device support for the MFD driver, other serdev consumer drivers for specific devices will be posted separately. The patches are against v5.6-rc1, please review and test, Regards, Tony Changes since v1: - Simplified usage and got rid of few pointless inline functions - Added consumer MFD driver, devicetree binding, and dts changes Tony Lindgren (4): tty: n_gsm: Add support for serdev drivers mfd: motmdm: Add Motorola TS 27.010 serdev modem driver for droid4 dt-bindings: mfd: motmdm: Add binding for motorola-mdm ARM: dts: omap4-droid4: Enable basic modem support .../mfd/motorola,mapphone-mdm6600.yaml | 37 + .../boot/dts/motorola-mapphone-common.dtsi | 6 + drivers/mfd/Kconfig | 8 + drivers/mfd/Makefile | 1 + drivers/mfd/motorola-mdm.c | 1204 +++++++++++++++++ drivers/tty/n_gsm.c | 372 +++++ include/linux/serdev-gsm.h | 168 +++ 7 files changed, 1796 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/motorola,mapphone-mdm6600.yaml create mode 100644 drivers/mfd/motorola-mdm.c create mode 100644 include/linux/serdev-gsm.h -- 2.25.0