Similarly to for_each_dss_display(), the for_each_dss_output() macro
iterates over all the DSS connected outputs.
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/omapdrm/dss/base.c | 20 ++++++++++++++------
drivers/gpu/drm/omapdrm/dss/omapdss.h | 9 ++++++---
2 files changed, 20 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/dss/base.c b/drivers/gpu/drm/omapdrm/dss/base.c
index 96be800a0f25..519682f18d36 100644
--- a/drivers/gpu/drm/omapdrm/dss/base.c
+++ b/drivers/gpu/drm/omapdrm/dss/base.c
@@ -127,11 +127,13 @@ struct omap_dss_device *omapdss_find_device_by_port(struct device_node *src,
/*
* Search for the next device starting at @from. If display_only is true, skip
- * non-display devices. Release the reference to the @from device, and acquire
- * a reference to the returned device if found.
+ * non-display devices. If output_only is true, skip non-output devices and
+ * non-connected output devices. Release the reference to the @from device, and
+ * acquire a reference to the returned device if found.
*/
struct omap_dss_device *omapdss_device_get_next(struct omap_dss_device *from,
- bool display_only)
+ bool display_only,
+ bool output_only)
{
struct omap_dss_device *dssdev;
struct list_head *list;
@@ -159,9 +161,15 @@ struct omap_dss_device *omapdss_device_get_next(struct omap_dss_device *from,
goto done;
}
- /* Filter out non-display entries if display_only is set. */
- if (!display_only || dssdev->driver)
- goto done;
+ /*
+ * Filter out non-display entries if display_only is set, and
+ * non-output entries if output_only is set.
+ */
+ if (display_only && !dssdev->driver)
+ continue;
+ if (output_only && (!dssdev->id || !dssdev->next))
+ continue;
+ goto done;
}
dssdev = NULL;
diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
index 076512628afc..f563cbce86e1 100644
--- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
+++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
@@ -486,9 +486,9 @@ static inline bool omapdss_is_initialized(void)
return !!omapdss_get_dss();
}
-void omapdss_display_init(struct omap_dss_device *dssdev);
#define for_each_dss_display(d) \
- while ((d = omapdss_device_get_next(d, true)) != NULL)
+ while ((d = omapdss_device_get_next(d, true, false)) != NULL)
+void omapdss_display_init(struct omap_dss_device *dssdev);
void omapdss_device_register(struct omap_dss_device *dssdev);
void omapdss_device_unregister(struct omap_dss_device *dssdev);
@@ -497,7 +497,8 @@ void omapdss_device_put(struct omap_dss_device *dssdev);
struct omap_dss_device *omapdss_find_device_by_port(struct device_node *src,
unsigned int port);
struct omap_dss_device *omapdss_device_get_next(struct omap_dss_device *from,
- bool display_only);
+ bool display_only,
+ bool output_only);
int omapdss_device_connect(struct dss_device *dss,
struct omap_dss_device *src,
struct omap_dss_device *dst);
@@ -509,6 +510,8 @@ int omap_dss_get_num_overlay_managers(void);
int omap_dss_get_num_overlays(void);
+#define for_each_dss_output(d) \
+ while ((d = omapdss_device_get_next(d, false, true)) != NULL)
int omapdss_output_set_device(struct omap_dss_device *out,
struct omap_dss_device *dssdev);
int omapdss_output_unset_device(struct omap_dss_device *out);
--
Regards,
Laurent Pinchart
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