[PATCH 32/60] drm/omap: dss: Make omap_dss_device_ops optional

[Laurent Pinchart]

As part of the move to drm_bridge ops for some of the internal encoders
will be removed. Make them optional in the driver to ease the
transition.

Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
---
 drivers/gpu/drm/omapdrm/dss/base.c       | 21 ++++++++++++---------
 drivers/gpu/drm/omapdrm/dss/dss.c        |  3 ++-
 drivers/gpu/drm/omapdrm/omap_connector.c |  2 +-
 drivers/gpu/drm/omapdrm/omap_encoder.c   | 12 +++++++-----
 4 files changed, 22 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/base.c b/drivers/gpu/drm/omapdrm/dss/base.c
index 80d48936d177..2db3bd2f19db 100644
--- a/drivers/gpu/drm/omapdrm/dss/base.c
+++ b/drivers/gpu/drm/omapdrm/dss/base.c
@@ -195,10 +195,12 @@ int omapdss_device_connect(struct dss_device *dss,
 
 	dst->dss = dss;
 
-	ret = dst->ops->connect(src, dst);
-	if (ret < 0) {
-		dst->dss = NULL;
-		return ret;
+	if (dst->ops && dst->ops->connect) {
+		ret = dst->ops->connect(src, dst);
+		if (ret < 0) {
+			dst->dss = NULL;
+			return ret;
+		}
 	}
 
 	return 0;
@@ -226,7 +228,8 @@ void omapdss_device_disconnect(struct omap_dss_device *src,
 
 	WARN_ON(dst->state != OMAP_DSS_DISPLAY_DISABLED);
 
-	dst->ops->disconnect(src, dst);
+	if (dst->ops && dst->ops->disconnect)
+		dst->ops->disconnect(src, dst);
 	dst->dss = NULL;
 }
 EXPORT_SYMBOL_GPL(omapdss_device_disconnect);
@@ -238,7 +241,7 @@ void omapdss_device_pre_enable(struct omap_dss_device *dssdev)
 
 	omapdss_device_pre_enable(dssdev->next);
 
-	if (dssdev->ops->pre_enable)
+	if (dssdev->ops && dssdev->ops->pre_enable)
 		dssdev->ops->pre_enable(dssdev);
 }
 EXPORT_SYMBOL_GPL(omapdss_device_pre_enable);
@@ -248,7 +251,7 @@ void omapdss_device_enable(struct omap_dss_device *dssdev)
 	if (!dssdev)
 		return;
 
-	if (dssdev->ops->enable)
+	if (dssdev->ops && dssdev->ops->enable)
 		dssdev->ops->enable(dssdev);
 
 	omapdss_device_enable(dssdev->next);
@@ -264,7 +267,7 @@ void omapdss_device_disable(struct omap_dss_device *dssdev)
 
 	omapdss_device_disable(dssdev->next);
 
-	if (dssdev->ops->disable)
+	if (dssdev->ops && dssdev->ops->disable)
 		dssdev->ops->disable(dssdev);
 }
 EXPORT_SYMBOL_GPL(omapdss_device_disable);
@@ -274,7 +277,7 @@ void omapdss_device_post_disable(struct omap_dss_device *dssdev)
 	if (!dssdev)
 		return;
 
-	if (dssdev->ops->post_disable)
+	if (dssdev->ops && dssdev->ops->post_disable)
 		dssdev->ops->post_disable(dssdev);
 
 	omapdss_device_post_disable(dssdev->next);
diff --git a/drivers/gpu/drm/omapdrm/dss/dss.c b/drivers/gpu/drm/omapdrm/dss/dss.c
index 55e68863ef15..a5cf15b7e630 100644
--- a/drivers/gpu/drm/omapdrm/dss/dss.c
+++ b/drivers/gpu/drm/omapdrm/dss/dss.c
@@ -1561,7 +1561,8 @@ static void dss_shutdown(struct platform_device *pdev)
 	DSSDBG("shutdown\n");
 
 	for_each_dss_output(dssdev) {
-		if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
+		if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE &&
+		    dssdev->ops && dssdev->ops->disable)
 			dssdev->ops->disable(dssdev);
 	}
 }
diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c b/drivers/gpu/drm/omapdrm/omap_connector.c
index 3d1f740037c8..3f913c8cf344 100644
--- a/drivers/gpu/drm/omapdrm/omap_connector.c
+++ b/drivers/gpu/drm/omapdrm/omap_connector.c
@@ -239,7 +239,7 @@ enum drm_mode_status omap_connector_mode_fixup(struct omap_dss_device *dssdev,
 	drm_mode_copy(adjusted_mode, mode);
 
 	for (; dssdev; dssdev = dssdev->next) {
-		if (!dssdev->ops->check_timings)
+		if (!dssdev->ops || !dssdev->ops->check_timings)
 			continue;
 
 		ret = dssdev->ops->check_timings(dssdev, adjusted_mode);
diff --git a/drivers/gpu/drm/omapdrm/omap_encoder.c b/drivers/gpu/drm/omapdrm/omap_encoder.c
index 510888413068..fa4e00e65f9d 100644
--- a/drivers/gpu/drm/omapdrm/omap_encoder.c
+++ b/drivers/gpu/drm/omapdrm/omap_encoder.c
@@ -87,10 +87,10 @@ static void omap_encoder_hdmi_mode_set(struct drm_connector *connector,
 	struct omap_dss_device *dssdev = omap_encoder->output;
 	bool hdmi_mode = connector->display_info.is_hdmi;
 
-	if (dssdev->ops->hdmi.set_hdmi_mode)
+	if (dssdev->ops && dssdev->ops->hdmi.set_hdmi_mode)
 		dssdev->ops->hdmi.set_hdmi_mode(dssdev, hdmi_mode);
 
-	if (hdmi_mode && dssdev->ops->hdmi.set_infoframe) {
+	if (hdmi_mode && dssdev->ops && dssdev->ops->hdmi.set_infoframe) {
 		struct hdmi_avi_infoframe avi;
 		int r;
 
@@ -148,7 +148,7 @@ static void omap_encoder_mode_set(struct drm_encoder *encoder,
 	dss_mgr_set_timings(output, &vm);
 
 	for (dssdev = output; dssdev; dssdev = dssdev->next) {
-		if (dssdev->ops->set_timings)
+		if (dssdev->ops && dssdev->ops->set_timings)
 			dssdev->ops->set_timings(dssdev, adjusted_mode);
 	}
 
@@ -177,7 +177,8 @@ static void omap_encoder_disable(struct drm_encoder *encoder)
 	 * flow where the pipeline output controls the encoder.
 	 */
 	if (dssdev->type != OMAP_DISPLAY_TYPE_DSI) {
-		dssdev->ops->disable(dssdev);
+		if (dssdev->ops && dssdev->ops->disable)
+			dssdev->ops->disable(dssdev);
 		dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
 	}
 
@@ -205,7 +206,8 @@ static void omap_encoder_enable(struct drm_encoder *encoder)
 	 * flow where the pipeline output controls the encoder.
 	 */
 	if (dssdev->type != OMAP_DISPLAY_TYPE_DSI) {
-		dssdev->ops->enable(dssdev);
+		if (dssdev->ops && dssdev->ops->enable)
+			dssdev->ops->enable(dssdev);
 		dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
 	}
 
-- 
Regards,

Laurent Pinchart