I2C support for CE4100, v3

[bigeasy@linutronix.de (Sebastian Andrzej Siewior)]

The I2C core inside CE4100 is very much the same as in PXA25x.
I Cc the ARM folks because patch 2 reorganizes some files so that they
can be accessed from x86.
The I2C device is behind a PCI bus. The PCI probe code simply creates
three platform devices so we don't have much changes to the platform
driver. There is no clock framework on x86 and the peripherals don't
support changing their clocks or to enable/disable them. So I provided
dummy function which keep the driver happy.
This series indirectly depends on the SPI series because both modify
include files and spi & i2c includes are sometimes too close to each
other.

History:
v1: Initial post
v2: - ISAR is still touched if not in SLAVE mode except on X86 where it
      is not touched at all.
    - There are no files created in include/asm
    - register defines are in common code
    - the PCI controller now requires a device tree. It is used to obtain
      an id (which is used as device & i2c bus id).
    - the PCI part now uses ARRAY_SIZE(). As it turns out pci_select_bars()
      is not useable.
    - the patch which resetted the chip if the i2c bus was not available
      has been dropped.
v3: - introduced dynamic register mapping. With this change I can avoid
      accessing the unavailable ISAR register without an #ifdef around
      it.
    - modified the DT part of the pci driver to address latest DT review
      comments.

The patch series has been created with the -M option so file moves can
be easily noticed. The whole series (including the spi rename) is also
available at
  git://git.linutronix.de/users/bigeasy/soda.git spi-i2c

Sebastian Andrzej Siewior (6):
      i2c/pxa: use dynamic register layout
      arm/pxa2xx: reorganize I2C files
      i2c/pxa2xx: Add PCI support for PXA I2C controller
      i2c/pxa2xx: add support for shared IRQ handler
      i2c/pxa2xx: check timeout correctly
      i2c/pxa2xx: pass of_node from platform driver to adapter and publish

 arch/arm/mach-mmp/include/mach/mmp2.h              |    2 +-
 arch/arm/mach-mmp/include/mach/pxa168.h            |    2 +-
 arch/arm/mach-mmp/include/mach/pxa910.h            |    2 +-
 arch/arm/mach-pxa/balloon3.c                       |    3 +-
 arch/arm/mach-pxa/cm-x300.c                        |    2 +-
 arch/arm/mach-pxa/colibri-pxa270-income.c          |    3 +-
 arch/arm/mach-pxa/corgi.c                          |    2 +-
 arch/arm/mach-pxa/csb726.c                         |    2 +-
 arch/arm/mach-pxa/devices.c                        |    2 +-
 arch/arm/mach-pxa/em-x270.c                        |    2 +-
 arch/arm/mach-pxa/ezx.c                            |    2 +-
 arch/arm/mach-pxa/hx4700.c                         |    2 +-
 arch/arm/mach-pxa/littleton.c                      |    2 +-
 arch/arm/mach-pxa/magician.c                       |    2 +-
 arch/arm/mach-pxa/mainstone.c                      |    2 +-
 arch/arm/mach-pxa/mioa701.c                        |    2 +-
 arch/arm/mach-pxa/mxm8x10.c                        |    2 +-
 arch/arm/mach-pxa/palm27x.c                        |    3 +-
 arch/arm/mach-pxa/pcm990-baseboard.c               |    2 +-
 arch/arm/mach-pxa/poodle.c                         |    2 +-
 arch/arm/mach-pxa/pxa27x.c                         |    2 +-
 arch/arm/mach-pxa/pxa3xx.c                         |    2 +-
 arch/arm/mach-pxa/raumfeld.c                       |    2 +-
 arch/arm/mach-pxa/saar.c                           |    2 +-
 arch/arm/mach-pxa/spitz.c                          |    3 +-
 arch/arm/mach-pxa/stargate2.c                      |    2 +-
 arch/arm/mach-pxa/tavorevb3.c                      |    3 +-
 arch/arm/mach-pxa/tosa.c                           |    2 +-
 arch/arm/mach-pxa/trizeps4.c                       |    2 +-
 arch/arm/mach-pxa/viper.c                          |    2 +-
 arch/arm/mach-pxa/vpac270.c                        |    3 +-
 arch/arm/mach-pxa/xcep.c                           |    3 +-
 arch/arm/mach-pxa/z2.c                             |    3 +-
 arch/arm/mach-pxa/zeus.c                           |    3 +-
 arch/arm/mach-pxa/zylonite_pxa300.c                |    2 +-
 drivers/i2c/busses/Kconfig                         |    7 +-
 drivers/i2c/busses/Makefile                        |    1 +
 drivers/i2c/busses/i2c-pxa-pci.c                   |  173 ++++++++++++++++++++
 drivers/i2c/busses/i2c-pxa.c                       |  116 ++++++++++---
 .../plat/i2c.h => include/linux/i2c/pxa-i2c.h      |    0
 40 files changed, 304 insertions(+), 72 deletions(-)
 create mode 100644 drivers/i2c/busses/i2c-pxa-pci.c
 rename arch/arm/plat-pxa/include/plat/i2c.h => include/linux/i2c/pxa-i2c.h (100%)

Sebastian