[PATCH v8 0/3] Add of-graph helpers to loop over endpoints and find ports by id

[p.zabel@pengutronix.de (Philipp Zabel)]

Hi,

Since there now is a merge conflict in imx-drm-core, I've rebased the series
onto v4.0-rc1. Also a new driver touched by this change appeared, so the first
patch now includes a fix for am437x-vfpe, too. I'd be happy to get an ack for
that.

This series converts all existing users of of_graph_get_next_endpoint that pass
a non-NULL prev argument to the function and decrement its refcount themselves
to stop doing that. The of_node_put is moved into of_graph_get_next_endpoint
instead.
This allows to add a for_each_endpoint_of_node helper macro to loop over all
endpoints in a device tree node.

Changes since v8:
 - Rebased onto v4.0-rc1
 - Added fix to am437x-vpfe

The previous version can be found here: https://lkml.org/lkml/2014/12/23/219

regards
Philipp

Philipp Zabel (3):
  of: Decrement refcount of previous endpoint in
    of_graph_get_next_endpoint
  of: Add for_each_endpoint_of_node helper macro
  of: Add of_graph_get_port_by_id function

 drivers/coresight/of_coresight.c                  | 13 ++-----
 drivers/gpu/drm/imx/imx-drm-core.c                | 11 +-----
 drivers/gpu/drm/rcar-du/rcar_du_kms.c             | 15 +++------
 drivers/media/platform/am437x/am437x-vpfe.c       |  1 -
 drivers/media/platform/soc_camera/soc_camera.c    |  3 +-
 drivers/of/base.c                                 | 41 ++++++++++++++++++-----
 drivers/video/fbdev/omap2/dss/omapdss-boot-init.c |  7 +---
 include/linux/of_graph.h                          | 18 ++++++++++
 8 files changed, 61 insertions(+), 48 deletions(-)

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2.1.4