[PATCH 0/4 v2] iommu/exynos: Add IOMMU and Enhance System MMU driver for Exynos4

[KyongHo Cho]

This is the second try of submitting patches about IOMMU/System MMU
driver for Exynos4 SoCs with the fixes of the following probles
pointed by Russell King.:
 - Missing unlocking a spinlock in exynos_iommu_attach_dev().
 - atomic_t -> int in sysmmu_drvdata.activations
 - sysmmu_platdata -> sysmmu_drvdata
 - Change in error messages in irq handler
 - Removed casting in format of error message
 - omap_iommu_ops -> exynos_iommu_ops in the last patch.

First 2 patches enhance System MMU platform device definition:
 - Removed System MMU for MDMA0 in LCD block because it is not used.
  Use MDMA2 in TOP block.
 - Removed System MMU ID. Instead a System MMU is bound to a device that
  the System MMU is dedicated during machin initialization. If a device
  driver wants to handle System MMU, it must bind its device with System
  MMU with sysmmu_set_owner().
 - clkdev
 - System MMU device driver is removed from arch/arm/plat-s5p to move it
  to driver/iommu directory.
Last 2 patches implements IOMMU API:
 - Implements IOMMU API and System MMU driver that is moved from
  arch/arm/plat-s5p.
 - Implements fault handling that is suggested by Ohad.
 - Used bus_set_iommu instead of register_iommu that is suggested by Joerg.

Regards,
Cho KyongHo.

Diffstats:

arch/arm/mach-exynos4/Kconfig               |    2 -
arch/arm/mach-exynos4/clock.c               |   43 +-
arch/arm/mach-exynos4/dev-sysmmu.c          |  270 ++------
arch/arm/mach-exynos4/include/mach/irqs.h   |    1 -
arch/arm/mach-exynos4/include/mach/map.h    |    1 -
arch/arm/mach-exynos4/include/mach/sysmmu.h |   85 ++-
arch/arm/mach-exynos4/mach-armlex4210.c     |   24 +-
arch/arm/mach-exynos4/mach-smdkv310.c       |   28 +-
arch/arm/plat-s5p/Kconfig                   |    8 -
arch/arm/plat-s5p/Makefile                  |    1 -
arch/arm/plat-s5p/include/plat/sysmmu.h     |   95 ---
arch/arm/plat-s5p/sysmmu.c                  |  312 ---------
drivers/iommu/Kconfig                       |   14 +
drivers/iommu/Makefile                      |    1 +
drivers/iommu/exynos_iommu.c                |  933 +++++++++++++++++++++++++++
15 files changed, 1134 insertions(+), 684 deletions(-)