Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751870AbaBKN4f (ORCPT ); Tue, 11 Feb 2014 08:56:35 -0500 Received: from mail-vb0-f53.google.com ([209.85.212.53]:50484 "EHLO mail-vb0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750903AbaBKN4e (ORCPT ); Tue, 11 Feb 2014 08:56:34 -0500 MIME-Version: 1.0 In-Reply-To: <1392119105-25298-1-git-send-email-p.zabel@pengutronix.de> References: <1392119105-25298-1-git-send-email-p.zabel@pengutronix.de> Date: Tue, 11 Feb 2014 07:56:33 -0600 Message-ID: Subject: Re: [RFC PATCH] [media]: of: move graph helpers from drivers/media/v4l2-core to drivers/of From: Rob Herring To: Philipp Zabel Cc: Russell King - ARM Linux , Mauro Carvalho Chehab , Grant Likely , Rob Herring , Sylwester Nawrocki , Laurent Pinchart , Tomi Valkeinen , Kyungmin Park , "linux-kernel@vger.kernel.org" , "linux-media@vger.kernel.org" , "devicetree@vger.kernel.org" , Philipp Zabel Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Feb 11, 2014 at 5:45 AM, Philipp Zabel wrote: > From: Philipp Zabel > > This patch moves the parsing helpers used to parse connected graphs > in the device tree, like the video interface bindings documented in > Documentation/devicetree/bindings/media/video-interfaces.txt, from > drivers/media/v4l2-core to drivers/of. This is the opposite direction things have been moving... > This allows to reuse the same parser code from outside the V4L2 framework, > most importantly from display drivers. There have been patches that duplicate > the code (and I am going to send one of my own), such as > http://lists.freedesktop.org/archives/dri-devel/2013-August/043308.html > and others that parse the same binding in a different way: > https://www.mail-archive.com/linux-omap@vger.kernel.org/msg100761.html > > I think that all common video interface parsing helpers should be moved to a > single place, outside of the specific subsystems, so that it can be reused > by all drivers. Perhaps that should be done rather than moving to drivers/of now and then again to somewhere else. > I moved v4l2_of_get_next_endpoint, v4l2_of_get_remote_port, > and v4l2_of_get_remote_port_parent. They are renamed to > of_graph_get_next_endpoint, of_graph_get_remote_port, and > of_graph_get_remote_port_parent, respectively. > > Signed-off-by: Philipp Zabel > --- > drivers/media/Kconfig | 1 + > drivers/media/v4l2-core/v4l2-of.c | 117 --------------------------------- > drivers/of/Kconfig | 3 + > drivers/of/Makefile | 1 + > drivers/of/of_graph.c | 133 ++++++++++++++++++++++++++++++++++++++ > include/linux/of_graph.h | 23 +++++++ > include/media/v4l2-of.h | 16 ++--- > 7 files changed, 167 insertions(+), 127 deletions(-) > create mode 100644 drivers/of/of_graph.c > create mode 100644 include/linux/of_graph.h [snip] > diff --git a/include/media/v4l2-of.h b/include/media/v4l2-of.h > index 541cea4..404a493 100644 > --- a/include/media/v4l2-of.h > +++ b/include/media/v4l2-of.h > @@ -17,6 +17,7 @@ > #include > #include > #include > +#include > > #include > > @@ -72,11 +73,6 @@ struct v4l2_of_endpoint { > #ifdef CONFIG_OF > int v4l2_of_parse_endpoint(const struct device_node *node, > struct v4l2_of_endpoint *endpoint); > -struct device_node *v4l2_of_get_next_endpoint(const struct device_node *parent, > - struct device_node *previous); > -struct device_node *v4l2_of_get_remote_port_parent( > - const struct device_node *node); > -struct device_node *v4l2_of_get_remote_port(const struct device_node *node); > #else /* CONFIG_OF */ > > static inline int v4l2_of_parse_endpoint(const struct device_node *node, > @@ -85,25 +81,25 @@ static inline int v4l2_of_parse_endpoint(const struct device_node *node, > return -ENOSYS; > } > > +#endif /* CONFIG_OF */ > + > static inline struct device_node *v4l2_of_get_next_endpoint( > const struct device_node *parent, > struct device_node *previous) > { > - return NULL; > + return of_graph_get_next_endpoint(parent, previous); Won't this break for !OF? Rob -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/