user/sven/linux.git/include/linux/of_graph.h, branch v5.12-rc2

of_graph: add of_graph_is_present()

2020-07-01T08:49:02Z

In some cases it's very useful to silently check whether port node exists at all in a device-tree before proceeding with parsing the graph. The DRM bridges code is one example of such case where absence of a graph in a device-tree is a legit condition. This patch adds of_graph_is_present() which returns true if given device-tree node contains OF graph port. Reviewed-by: Rob Herring Signed-off-by: Dmitry Osipenko Reviewed-by: Laurent Pinchart Signed-off-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20200701074232.13632-2-digetx@gmail.com

of: Use SPDX license tag for DT files

2018-01-08T14:22:45Z

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()

2017-05-17T09:21:16Z

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()

2017-05-17T09:21:12Z

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()

2017-05-17T09:21:08Z

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

2017-02-15T14:53:32Z

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

2016-05-02T14:00:56Z

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

2015-06-24T01:18:48Z

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

2015-06-22T10:56:51Z

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

2015-03-26T17:14:56Z

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