[PATCH v3 0/4] PCI: get DMA configuration from parent device

[Murali Karicheri <m-karicheri2@ti.com>]

PCI devices on Keystone doesn't have correct dma_pfn_offset set. This patch
add capability to set the dma configuration such as dma-mask, dma_pfn_offset,
and dma ops etc using the information from DT. The prior RFCs and discussions
are available at [1] and [2] below.

[2] : https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg790244.html
[1] : http://www.gossamer-threads.com/lists/linux/kernel/2024591

Change history:
	v3 - addressed comments to re-use of_dma_configure() for PCI
	   - To help re-use, change of_iommu_configure() function argument
		- Move of_dma_configure to of/device.c
		- Limit the of_iommu_configure to non pci devices
	v2 - update size to coherent_dma_mask + 1 if dma-range info is missing
	   - also check the np for null.
	v1 - updates based on the comments against initial RFC.
	   - Added a helper function to get the OF node of the parent
	   - Added an API in of_pci.c to update DMA configuration of the pci
	     device.

Murali Karicheri (4):
  of: iommu: add ptr to OF node arg to of_iommu_configure()
  of: move of_dma_configure() to device,c to help re-use
  of/pci: add of_pci_dma_configure() update dma configuration
  PCI: update dma configuration from DT

 drivers/iommu/of_iommu.c  |   10 ++++++--
 drivers/of/device.c       |   58 +++++++++++++++++++++++++++++++++++++++++++++
 drivers/of/of_pci.c       |   39 ++++++++++++++++++++++++++++++
 drivers/of/platform.c     |   58 ++-------------------------------------------
 drivers/pci/probe.c       |    2 ++
 include/linux/of_device.h |    2 ++
 include/linux/of_iommu.h  |    6 +++--
 include/linux/of_pci.h    |   12 ++++++++++
 8 files changed, 127 insertions(+), 60 deletions(-)

-- 
1.7.9.5