Add a new omapdss_display_get() function to retrieve the omap_dss_device
for a given DSS output. This will be used when reversing the direction
of the DSS pipeline handling logic.
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/omapdrm/dss/display.c | 9 +++++++++
drivers/gpu/drm/omapdrm/dss/omapdss.h | 1 +
2 files changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/omapdrm/dss/display.c b/drivers/gpu/drm/omapdrm/dss/display.c
index 65ca71859c7d..697dab0435d6 100644
--- a/drivers/gpu/drm/omapdrm/dss/display.c
+++ b/drivers/gpu/drm/omapdrm/dss/display.c
@@ -49,3 +49,12 @@ void omapdss_display_init(struct omap_dss_device *dssdev)
"display%u", id);
}
EXPORT_SYMBOL_GPL(omapdss_display_init);
+
+struct omap_dss_device *omapdss_display_get(struct omap_dss_device *output)
+{
+ while (output->next)
+ output = output->next;
+
+ return omapdss_device_get(output);
+}
+EXPORT_SYMBOL_GPL(omapdss_display_get);
diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
index f563cbce86e1..14aebef5dc3a 100644
--- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
+++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
@@ -489,6 +489,7 @@ static inline bool omapdss_is_initialized(void)
#define for_each_dss_display(d) \
while ((d = omapdss_device_get_next(d, true, false)) != NULL)
void omapdss_display_init(struct omap_dss_device *dssdev);
+struct omap_dss_device *omapdss_display_get(struct omap_dss_device *output);
void omapdss_device_register(struct omap_dss_device *dssdev);
void omapdss_device_unregister(struct omap_dss_device *dssdev);
--
Regards,
Laurent Pinchart
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/dri-devel
