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    Subject[PATCHv3 00/14] OMAP SSI driver / N900 modem support

    This is the seventh round of the OMAP SSI driver patches. The plan is
    to get it merged into 3.16.

    Changes since PATCHv2 [0]:
    * Readded generic HSI client binding and Nokia N900 modem support.
    They are also intended to be added in 3.16 and useful for testing
    the SSI driver, so I think it makes sense to keep them in one
    * Updated the DT binding for the modem. A HSI port has only a single
    child now, which describes the connected remote device. This better
    fits the DT model of strictly describing hardware, since a HSI port
    is a point2point interface. The driver can instantiate other
    drivers as needed.
    * Moved channel description from the drivers into DT.
    * I added Signed-off-by: Carlos Chinea <> to the
    omap-ssi and ssi-protocol driver addtions, since the initial driver
    was from him.
    * I updated my email address.
    * Added DTS changes to ease reviewing/testing the patchset.

    I did *not* implement proper PM for the Nokia N900 modem in kernel
    space, since that would break all existing userlands (ofono, fso-gsmd
    and Nokia's closed source binaries). I think this should be implemented

    Please send feedback (e.g. Tested-By or Reviewed-By :)), so that I can
    send a pull request for 3.16. You can either apply this patchset or
    use the n900-modem-support branch available on [1].

    For testing the patchset you should build the kernel with all config
    entries in the HSI subsystem activated and boot using the updated
    device tree information, since platform data based booting is not
    supported. Testing the patchset with ofono works like this:

    # provide cmt device for ofono
    ln -sf /sys/bus/hsi/n900-modem /dev/cmt
    # start ofono
    ofono --nodetach --debug
    # enable the modem
    mdbus2 -s org.ofono /n900_0 org.ofono.Modem.SetProperty Powered true
    # enable modem's RF parts
    mdbus2 -s org.ofono /n900_0 org.ofono.Modem.SetProperty Online true
    # scan for available networks (takes some time)
    mdbus2 -s org.ofono /n900_0 org.ofono.NetworkRegistration.Scan

    TODO (post-merge):
    * Central Message Queue
    I did not yet implement a central message queue in the HSI framework.
    I will do this after Nokia N900 modem is working in the mainline kernel.
    * Remove the hwmod DT hack
    This depends on some future work merging hwmod data into DT.
    * Implement proper context loss detection
    * Implement N900 modem PM

    [1] git://

    -- Sebastian

    Sebastian Reichel (14):
    Documentation: HSI: Add some general description for the HSI subsystem
    MAINTAINERS: update HSI entry
    HSI: hsi-char: fix driver for multiport scenarios
    HSI: method to unregister clients from an hsi port
    HSI: Add channel resource support to HSI clients
    HSI: export method to (un)register clients
    HSI: Add common DT binding for HSI client devices
    HSI: Introduce OMAP SSI driver
    Documentation: DT: omap-ssi binding documentation
    HSI: Introduce driver for SSI Protocol
    HSI: Introduce Nokia N900 modem driver
    ARM: dts: omap3 clocks: simplify ssi aliases
    DTS: ARM: OMAP3-N900: Add SSI support
    DTS: ARM: OMAP3-N900: Add modem support

    .../devicetree/bindings/hsi/client-devices.txt | 44 +
    .../devicetree/bindings/hsi/nokia-modem.txt | 58 +
    Documentation/devicetree/bindings/hsi/omap-ssi.txt | 85 ++
    Documentation/hsi.txt | 75 ++
    MAINTAINERS | 4 +-
    arch/arm/boot/dts/omap3-n900.dts | 65 +
    arch/arm/boot/dts/omap3.dtsi | 55 +
    arch/arm/boot/dts/omap3430es1-clocks.dtsi | 10 +-
    arch/arm/boot/dts/omap34xx.dtsi | 11 +
    .../boot/dts/omap36xx-omap3430es2plus-clocks.dtsi | 10 +-
    arch/arm/boot/dts/omap36xx.dtsi | 11 +
    drivers/hsi/Kconfig | 1 +
    drivers/hsi/Makefile | 1 +
    drivers/hsi/clients/Kconfig | 17 +
    drivers/hsi/clients/Makefile | 4 +-
    drivers/hsi/clients/hsi_char.c | 14 +-
    drivers/hsi/clients/nokia-modem.c | 272 ++++
    drivers/hsi/clients/ssi_protocol.c | 1188 +++++++++++++++++
    drivers/hsi/controllers/Kconfig | 19 +
    drivers/hsi/controllers/Makefile | 6 +
    drivers/hsi/controllers/omap_ssi.c | 621 +++++++++
    drivers/hsi/controllers/omap_ssi.h | 166 +++
    drivers/hsi/controllers/omap_ssi_port.c | 1401 ++++++++++++++++++++
    drivers/hsi/controllers/omap_ssi_regs.h | 171 +++
    drivers/hsi/hsi.c | 267 +++-
    include/linux/hsi/hsi.h | 30 +-
    include/linux/hsi/ssi_protocol.h | 42 +
    27 files changed, 4619 insertions(+), 29 deletions(-)
    create mode 100644 Documentation/devicetree/bindings/hsi/client-devices.txt
    create mode 100644 Documentation/devicetree/bindings/hsi/nokia-modem.txt
    create mode 100644 Documentation/devicetree/bindings/hsi/omap-ssi.txt
    create mode 100644 Documentation/hsi.txt
    create mode 100644 drivers/hsi/clients/nokia-modem.c
    create mode 100644 drivers/hsi/clients/ssi_protocol.c
    create mode 100644 drivers/hsi/controllers/Kconfig
    create mode 100644 drivers/hsi/controllers/Makefile
    create mode 100644 drivers/hsi/controllers/omap_ssi.c
    create mode 100644 drivers/hsi/controllers/omap_ssi.h
    create mode 100644 drivers/hsi/controllers/omap_ssi_port.c
    create mode 100644 drivers/hsi/controllers/omap_ssi_regs.h
    create mode 100644 include/linux/hsi/ssi_protocol.h


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