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The omapdss_of_find_source_for_first_ep() function locates the source
corresponding to the first endpoint of the first port of a device node.
We can easily extend it to locate sinks as well by passing the port
number as a parameter. This will be useful to find sinks in encoders
drivers.
Extend the function and rename it to omapdss_of_find_connected_device()
to reflect its new extended purpose.
Additionally, it is useful to differentiate between failures to return
the connected device because no link exists in the device tree for the
requested port, or because the connected device as described in the
device tree is invalid or not probed yet. Return NULL in the first case
and an error code in the second case, and update the callers
accordingly.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The omap_dss_find_output_by_port() function looks up an omap_dss_device
by port from the list of devices registered as outputs. In preparation
for looking up sinks in addition to sources, allow the function to look
up any registered device. Rename it to omap_dss_find_device_by_port() to
match its new purpose.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The omap_dss_find_output_by_port_node() function defined in output.c
looks up an output from its port node. To do so it needs to call helper
functions from dss-of.c to lookup the port parent and the port number.
As omap_dss_find_output_by_port_node() is only called by
omapdss_of_find_source_for_first_ep() from dss-of.c this goes back and
forth between the to source files and isn't very clear.
Simplify the code by passing both the parent and the port number to
omap_dss_find_output_by_port_node() instead of the port node, and rename
the function to omap_dss_find_output_by_port().
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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A few functions defined in omapdss-base are internal to the module.
Don't export them.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Having the filename in the header serves little purpose and is
often wrong after renames as it is here in several places, just
drop it from all omapdrm files.
While we are here unify the copyright tags to the TI recommended style.
Signed-off-by: Andrew F. Davis <afd@ti.com>
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The OMAP driver has its own OF graph helpers that are similar to the
common helpers. This commit replaces most of the calls with the common
helpers. There's still a couple of custom helpers left, but the driver
needs more extensive changes to get rid of them.
In dss_init_ports, we invert the loop, looping through the known ports
and matching them to DT nodes rather than looping thru DT nodes and
matching them to the ports.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
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This patch moves the common parts of omapdss to omapdss-base so that
both the current omapdss driver and the new omapdss6 driver can use
them.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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of_parse_phandle"
This reverts
commit 2ab9f5879162499e1c4e48613287e3f59e593c4f
Author: Peter Chen <peter.chen@nxp.com>
Date: Fri Jul 15 11:17:03 2016 +0800
gpu: drm: omapdrm: dss-of: add missing of_node_put after calling of_parse_phandle
The of_get_next_parent will drop refcount on the passed node, so the reverted
patch is wrong, thanks for Tomi Valkeinen points it.
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1470908694-16362-1-git-send-email-peter.chen@nxp.com
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of_parse_phandle
of_node_put needs to be called when the device node which is got
from of_parse_phandle has finished using.
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
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All drivers to include the omapdrm/dss/omapdss.h header file. This header
includes the <video/omapdss.h>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
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Now that omapfb has its own copy of omapdss and display drivers, we can
move omapdss and display drivers which omapdrm uses to omapdrm's
directory.
We also need to change the main drm Makefile so that omapdrm directory
is always entered, because omapdss has a file that can't be built as a
module.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Acked-by: Rob Clark <robdclark@gmail.com>
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