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    Subject[PATCH v2 0/9] Serial slave device bus
    Date
    Here's a new version of the serdev bus support with all the review
    feedback so far incorporated. I've left it named serdev for now pending
    any further votes one way or the other, but I did rename the sysfs visible
    portions to "serial".

    There's still some discussion about what to do with devices that pass thru
    data to userspace unmodified like GPS and could still use tty device for
    the data path. IMO, we should treat this as a separate problem following
    this series. Drivers we want to convert to serdev and already in the
    kernel don't need this functionality.

    I need a SoB from Alan on his patch 2 and would like review from Alan and/or
    Peter on the locking in patch 5.

    I have hacked up versions of the BT ldisc and TI ST drivers moved over to
    use the serdev bus. I have BT working on the HiKey board which has TI BT.
    With the serdev bus support, it eliminates the need for the TI userspace
    UIM daemon. I've made some progress cleaning up the TI-ST into proper
    patches and also got it working at 3Mbps.

    Changelog is in individual patches. Previous version is here[1]. This
    series and the mentioned drivers can be found here[2].

    Rob

    [1] https://lkml.org/lkml/2017/1/6/411
    [2] git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git serial-bus-v3


    Alan Cox (1):
    tty_port: allow a port to be opened with a tty that has no file handle

    Rob Herring (8):
    tty: move the non-file related parts of tty_release to new
    tty_release_struct
    tty_port: make tty_port_register_device wrap
    tty_port_register_device_attr
    tty: constify tty_ldisc_receive_buf buffer pointer
    tty_port: Add port client functions
    dt/bindings: Add a serial/UART attached device binding
    serdev: Introduce new bus for serial attached devices
    serdev: add a tty port controller driver
    tty_port: register tty ports with serdev bus

    .../devicetree/bindings/serial/slave-device.txt | 36 ++
    MAINTAINERS | 8 +
    drivers/char/Kconfig | 1 +
    drivers/tty/Makefile | 1 +
    drivers/tty/serdev/Kconfig | 16 +
    drivers/tty/serdev/Makefile | 5 +
    drivers/tty/serdev/core.c | 421 +++++++++++++++++++++
    drivers/tty/serdev/serdev-ttyport.c | 240 ++++++++++++
    drivers/tty/tty_buffer.c | 19 +-
    drivers/tty/tty_io.c | 52 ++-
    drivers/tty/tty_port.c | 58 ++-
    include/linux/serdev.h | 234 ++++++++++++
    include/linux/tty.h | 12 +-
    13 files changed, 1062 insertions(+), 41 deletions(-)
    create mode 100644 Documentation/devicetree/bindings/serial/slave-device.txt
    create mode 100644 drivers/tty/serdev/Kconfig
    create mode 100644 drivers/tty/serdev/Makefile
    create mode 100644 drivers/tty/serdev/core.c
    create mode 100644 drivers/tty/serdev/serdev-ttyport.c
    create mode 100644 include/linux/serdev.h

    --
    2.10.1

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