drm/omap: Check omap_dss_device type based on the output_type field

Various functions that need to differentiate between omap_dss_device
instances corresponding to displays and to internal encoders use the
omap_dss_device.driver field, which is only set for display instances.
This gets in the way of the omap_dss_device operations refactoring.
Replace that with a check based on the output_type field which is set
for all omap_dss_device instances but displays.

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>

diff --git a/drivers/gpu/drm/omapdrm/dss/base.c b/drivers/gpu/drm/omapdrm/dss/base.c
index 2051bab..614331b 100644 (file)
--- a/drivers/gpu/drm/omapdrm/dss/base.c
+++ b/drivers/gpu/drm/omapdrm/dss/base.c
@@ -164,7 +164,8 @@ struct omap_dss_device *omapdss_device_get_next(struct omap_dss_device *from,
                 * Accept display entities if the display type is requested,
                 * and output entities if the output type is requested.
                 */
-               if ((type & OMAP_DSS_DEVICE_TYPE_DISPLAY) && dssdev->driver)
+               if ((type & OMAP_DSS_DEVICE_TYPE_DISPLAY) &&
+                   !dssdev->output_type)
                        goto done;
                if ((type & OMAP_DSS_DEVICE_TYPE_OUTPUT) && dssdev->id &&
                    dssdev->next)
@@ -223,7 +224,7 @@ void omapdss_device_disconnect(struct omap_dss_device *src,
        dev_dbg(dst->dev, "disconnect\n");
 
        if (!dst->id && !omapdss_device_is_connected(dst)) {
-               WARN_ON(!dst->driver);
+               WARN_ON(dst->output_type);
                return;
        }
 

diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h
index c296337..6d22b38 100644 (file)
--- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
+++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
@@ -406,6 +406,12 @@ struct omap_dss_device {
        unsigned int alias_id;
 
        enum omap_display_type type;
+       /*
+        * DSS output type that this device generates (for DSS internal devices)
+        * or requires (for external encoders). Must be OMAP_DISPLAY_TYPE_NONE
+        * for display devices (connectors and panels) and to non-zero value for
+        * all other devices.
+        */
        enum omap_display_type output_type;
 
        const char *name;