drm/omap: Group CRTC, encoder, connector and dssdev in a structure

Create an omap_drm_pipeline structure to model display pipelines, made
of a CRTC, an encoder, a connector and a DSS display device. This allows
grouping related parameters together instead of storing them in
independent arrays and thus improves code readability.
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>

drivers/gpu/drm/omapdrm/omap_crtc.c

@@ -474,8 +474,8 @@ static void omap_crtc_mode_set_nofb(struct drm_crtc *crtc)
 	 * has been changed to the DRM model.
 	 */
 
-	for (i = 0; i < priv->num_encoders; ++i) {
-		struct drm_encoder *encoder = priv->encoders[i];
+	for (i = 0; i < priv->num_pipes; ++i) {
+		struct drm_encoder *encoder = priv->pipes[i].encoder;
 
 		if (encoder->crtc == crtc) {
 			struct omap_dss_device *dssdev;

drivers/gpu/drm/omapdrm/omap_drv.h

@@ -45,6 +45,13 @@
 
 struct omap_drm_usergart;
 
+struct omap_drm_pipeline {
+	struct drm_crtc *crtc;
+	struct drm_encoder *encoder;
+	struct drm_connector *connector;
+	struct omap_dss_device *display;
+};
+
 struct omap_drm_private {
 	struct drm_device *ddev;
 	struct device *dev;
@@ -54,21 +61,12 @@ struct omap_drm_private {
 	struct dispc_device *dispc;
 	const struct dispc_ops *dispc_ops;
 
-	unsigned int num_dssdevs;
-	struct omap_dss_device *dssdevs[8];
-
-	unsigned int num_crtcs;
-	struct drm_crtc *crtcs[8];
+	unsigned int num_pipes;
+	struct omap_drm_pipeline pipes[8];
 
 	unsigned int num_planes;
 	struct drm_plane *planes[8];
 
-	unsigned int num_encoders;
-	struct drm_encoder *encoders[8];
-
-	unsigned int num_connectors;
-	struct drm_connector *connectors[8];
-
 	struct drm_fb_helper *fbdev;
 
 	struct workqueue_struct *wq;

drivers/gpu/drm/omapdrm/omap_fbdev.c

@@ -243,7 +243,7 @@ void omap_fbdev_init(struct drm_device *dev)
 	struct drm_fb_helper *helper;
 	int ret = 0;
 
-	if (!priv->num_crtcs || !priv->num_connectors)
+	if (!priv->num_pipes)
 		return;
 
 	fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
@@ -256,7 +256,7 @@ void omap_fbdev_init(struct drm_device *dev)
 
 	drm_fb_helper_prepare(dev, helper, &omap_fb_helper_funcs);
 
-	ret = drm_fb_helper_init(dev, helper, priv->num_connectors);
+	ret = drm_fb_helper_init(dev, helper, priv->num_pipes);
 	if (ret)
 		goto fail;
 

drivers/gpu/drm/omapdrm/omap_irq.c

@@ -206,8 +206,8 @@ static irqreturn_t omap_irq_handler(int irq, void *arg)
 
 	VERB("irqs: %08x", irqstatus);
 
-	for (id = 0; id < priv->num_crtcs; id++) {
-		struct drm_crtc *crtc = priv->crtcs[id];
+	for (id = 0; id < priv->num_pipes; id++) {
+		struct drm_crtc *crtc = priv->pipes[id].crtc;
 		enum omap_channel channel = omap_crtc_channel(crtc);
 
 		if (irqstatus & priv->dispc_ops->mgr_get_vsync_irq(priv->dispc, channel)) {