linux-toradex.git/include/linux/of_graph.h, branch v5.1-rc1

of: Use SPDX license tag for DT files

2018-01-08T14:22:45+00:00

Convert remaining DT files to use SPDX-License-Identifier tags.

Cc: Benjamin Herrenschmidt 
Cc: Guennadi Liakhovetski 
Cc: Paul Mackerras 
Cc: Pantelis Antoniou 
Reviewed-by: Frank Rowand 
Reviewed-by: Philippe Ombredanne 
Signed-off-by: Rob Herring

of_graph: add of_graph_get_endpoint_count()

2017-05-17T09:21:16+00:00

OF graph want to count its endpoint number, same as
of_get_child_count(). This patch adds of_graph_get_endpoint_count()

Signed-off-by: Kuninori Morimoto 
Acked-by: Rob Herring 
Signed-off-by: Mark Brown

of_graph: add of_graph_get_port_parent()

2017-05-17T09:21:12+00:00

Linux kernel already has of_graph_get_remote_port_parent(),
but, sometimes we want to get own port parent.
This patch adds of_graph_get_port_parent()

Signed-off-by: Kuninori Morimoto 
Acked-by: Rob Herring 
Signed-off-by: Mark Brown

of_graph: add of_graph_get_remote_endpoint()

2017-05-17T09:21:08+00:00

It should use same method to get same result.
To getting remote-endpoint node,
let's use of_graph_get_remote_endpoint()

Signed-off-by: Kuninori Morimoto 
Acked-by: Rob Herring 
Signed-off-by: Mark Brown

of: introduce of_graph_get_remote_node

2017-02-15T14:53:32+00:00

The OF graph API leaves too much of the graph walking to clients when
in many cases the driver doesn't care about accessing the port or
endpoint nodes. The drivers typically just want the device connected via
a particular graph connection. of_graph_get_remote_node provides this
functionality.

Signed-off-by: Rob Herring 
Acked-by: Philipp Zabel

of: include errno.h in of_graph.h

2016-05-02T14:00:56+00:00

When CONFIG_OF is disabled, we have to include linux/errno.h before
including of_graph.h, or get build errors like in the newly added
sun4i drm driver:

In file included from ../drivers/gpu/drm/sun4i/sun4i_drv.c:14:0:
include/linux/of_graph.h: In function 'of_graph_parse_endpoint':
include/linux/of_graph.h:58:10: error: 'ENOSYS' undeclared (first use in this function)

A better solution is to ensure that the header can be included
by itself, so let's include linux/errno.h here to fix the error
we just got, and any similar future error.

Signed-off-by: Arnd Bergmann 
Fixes: 9026e0d122ac ("drm: Add Allwinner A10 Display Engine support")
Signed-off-by: Rob Herring

of: fix a build error to of_graph_get_endpoint_by_regs function

2015-06-24T01:18:48+00:00

This patch fixes the below build error reported by Stephen,

     Stephen reported:
     After merging the drm-exynos tree, today's linux-next build (x86_64
     allmodconfig) failed like this:

     drivers/media/i2c/adv7604.o: In function `of_graph_get_endpoint_by_regs':
     adv7604.c:(.text+0x586c): multiple definition of `of_graph_get_endpoint_by_regs'
     drivers/media/i2c/adv7343.o:adv7343.c:(.text+0xa13): first defined here
     drivers/media/platform/soc_camera/atmel-isi.o: In function `of_graph_get_endpoint_by_regs':
     atmel-isi.c:(.text+0x1ec9): multiple definition of `of_graph_get_endpoint_by_regs'
     drivers/media/platform/soc_camera/soc_camera.o:soc_camera.c:(.text+0x2ce3): first defined here
     drivers/media/platform/soc_camera/rcar_vin.o: In function `of_graph_get_endpoint_by_regs':
     rcar_vin.c:(.text+0x307c): multiple definition of `of_graph_get_endpoint_by_regs'
     drivers/media/platform/soc_camera/soc_camera.o:soc_camera.c:(.text+0x2ce3): first defined here

     Caused by commit:
       a0f7001c18ca ("of: add helper for getting endpoint node of specific identifiers")

To fix the error, this patch declares of_graph_get_endpoint_by_regs function
with "static inline".

Signed-off-by: Inki Dae 
Signed-off-by: Dave Airlie

of: add helper for getting endpoint node of specific identifiers

2015-06-22T10:56:51+00:00

When there are multiple ports or multiple endpoints in a port, they have to be
distinguished by the value of reg property. It is common. The drivers can get
the specific endpoint in the specific port via this function. Now the drivers
have to implement this code in themselves or have to force the order of dt nodes
to get the right node.

Signed-off-by: Hyungwon Hwang 
Acked-by: Rob Herring 
Signed-off-by: Inki Dae

of: Explicitly include linux/types.h in of_graph.h

2015-03-26T17:14:56+00:00

In current -next of_graph.h fails to build due to it relying on
linux/types.h without explicitly including it:

../include/linux/of_graph.h:43:71: error: unknown type name 'u32'

caused by bfe446e37c4e (of: Add of_graph_get_port_by_id function).  Add
an explicit inclusion to fix this.

Signed-off-by: Mark Brown 
Acked-by: Laurent Pinchart 
Acked-by: Philipp Zabel 
Signed-off-by: Rob Herring

of: Add of_graph_get_port_by_id function

2015-02-23T10:42:24+00:00

This patch adds a function to get a port device tree node by port id,
or reg property value.

Signed-off-by: Philipp Zabel 
Acked-by: Laurent Pinchart