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    Subject[PATCH 0/9] Serial slave device bus
    Date
    Here goes another attempt at a serial device bus (aka uart slaves, tty
    slaves, etc.).

    After some discussions with Dmitry at LPC, I decided to move away from
    extending serio and moved back to making a new bus type instead. He didn't
    think using serio was a good fit, and serio has a number of peculiarities
    in regards to sysfs and it's driver model. I don't think we want to inherit
    those for serial slave devices.

    This version sits on top of tty_port rather than uart_port as Alan
    requested. Once I created a struct tty rather than moving everything
    needed to tty_port, it became a lot easier and less invasive to the tty
    core code.

    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.

    This series and the mentioned drivers can be found here[1].

    Rob

    [1] git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git serial-bus-v2

    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 | 34 ++
    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 | 388 +++++++++++++++++++++
    drivers/tty/serdev/serdev-ttyport.c | 244 +++++++++++++
    drivers/tty/tty_buffer.c | 19 +-
    drivers/tty/tty_io.c | 44 ++-
    drivers/tty/tty_port.c | 60 +++-
    include/linux/serdev.h | 227 ++++++++++++
    include/linux/tty.h | 12 +-
    13 files changed, 1017 insertions(+), 42 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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