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    Subject[PATCH 0/4] Pinmux subsystem
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    From: Linus Walleij <linus.walleij@linaro.org>

    This patchset creates a pinmux subsystem and switches U300 to use that new
    subsystem as an example. The problem is not that fantastically hard to
    solve in a general way, nobody got around to it because it requires some
    upfront code I believe, and this is my stab at it.

    For details about what pinmuxing is see the Documentation/pinmux.txt file
    in the patchset.

    The problem is not ARM specific at all, I haven't looked around deeply but I
    expect the same type of hacks to exist in most embedded hardware.

    This patchset goes on top of my previous gpio consolidation patches that
    bring the U300 GPIO driver into drivers/gpio.

    If there is nothing fundamentally insane about the design I will likely
    attempt to optimistically push it for 2.6.40 as part of the ARM depopulation
    work.

    Linus Walleij (4):
    drivers: create a pinmux subsystem
    pinmux: add a driver for the U300 pinmux
    amba: request muxing for PrimeCell devices
    pinmux: activate pinmux driver, delete old padmux driver

    Documentation/ABI/testing/sysfs-class-pinmux | 11 +
    Documentation/pinmux.txt | 306 +++++++++++
    MAINTAINERS | 5 +
    arch/arm/mach-u300/Kconfig | 2 +
    arch/arm/mach-u300/Makefile | 2 +-
    arch/arm/mach-u300/core.c | 30 +-
    arch/arm/mach-u300/include/mach/pinmux.h | 2 +
    arch/arm/mach-u300/include/mach/syscon.h | 136 -----
    arch/arm/mach-u300/mmc.c | 16 -
    arch/arm/mach-u300/padmux.c | 367 -------------
    arch/arm/mach-u300/padmux.h | 39 --
    arch/arm/mach-u300/spi.c | 20 -
    drivers/Kconfig | 4 +
    drivers/Makefile | 2 +
    drivers/amba/bus.c | 49 ++-
    drivers/pinmux/Kconfig | 32 ++
    drivers/pinmux/Makefile | 6 +
    drivers/pinmux/core.c | 732 ++++++++++++++++++++++++++
    drivers/pinmux/pinmux-u300.c | 361 +++++++++++++
    drivers/pinmux/pinmux-u300.h | 141 +++++
    include/linux/amba/bus.h | 2 +
    include/linux/pinmux.h | 217 ++++++++
    22 files changed, 1899 insertions(+), 583 deletions(-)
    create mode 100644 Documentation/ABI/testing/sysfs-class-pinmux
    create mode 100644 Documentation/pinmux.txt
    create mode 100644 arch/arm/mach-u300/include/mach/pinmux.h
    delete mode 100644 arch/arm/mach-u300/padmux.c
    delete mode 100644 arch/arm/mach-u300/padmux.h
    create mode 100644 drivers/pinmux/Kconfig
    create mode 100644 drivers/pinmux/Makefile
    create mode 100644 drivers/pinmux/core.c
    create mode 100644 drivers/pinmux/pinmux-u300.c
    create mode 100644 drivers/pinmux/pinmux-u300.h
    create mode 100644 include/linux/pinmux.h

    --
    1.7.3.2



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