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drm/omap: dss: Rework output lookup by port node

Sfoglia il codice sorgente 
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>
This commit is contained in:
Laurent Pinchart
2018-03-01 23:35:55 +02:00
committato da Tomi Valkeinen
parent 9184f8d94c
commit a7e82a67c1
3 ha cambiato i file con 23 aggiunte e 39 eliminazioni
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17
drivers/gpu/drm/omapdrm/dss/output.c
Vedi File

@@ -122,27 +122,16 @@ struct omap_dss_device *omap_dss_get_output(enum omap_dss_output_id id)
}
EXPORT_SYMBOL(omap_dss_get_output);
struct omap_dss_device *omap_dss_find_output_by_port_node(struct device_node *port)
struct omap_dss_device *omap_dss_find_output_by_port(struct device_node *src,
unsigned int port)
{
struct device_node *src_node;
struct omap_dss_device *out;
u32 reg;
src_node = dss_of_port_get_parent_device(port);
if (!src_node)
return NULL;
reg = dss_of_port_get_port_number(port);
list_for_each_entry(out, &output_list, output_list) {
if (out->dev->of_node == src_node && out->port_num == reg) {
of_node_put(src_node);
if (out->dev->of_node == src && out->port_num == port)
return omap_dss_get_device(out);
}
}
of_node_put(src_node);
return NULL;
}