3 files changed, 85 insertions, 8 deletions

diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index eba6337f5860..2151ea551d3b 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -616,10 +616,18 @@ int drm_control(struct drm_device *dev, void *data,
 void drm_calc_timestamping_constants(struct drm_crtc *crtc,
                                      const struct drm_display_mode *mode)
 {
-        struct drm_vblank_crtc *vblank = &crtc->dev->vblank[drm_crtc_index(crtc)];
+        struct drm_device *dev = crtc->dev;
+        unsigned int pipe = drm_crtc_index(crtc);
+        struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
         int linedur_ns = 0, framedur_ns = 0;
         int dotclock = mode->crtc_clock;
 
+        if (!dev->num_crtcs)
+                return;
+
+        if (WARN_ON(pipe >= dev->num_crtcs))
+                return;
+
         /* Valid dotclock? */
         if (dotclock > 0) {
                 int frame_size = mode->crtc_htotal * mode->crtc_vtotal;
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index d26e0cc7dc4b..f22e1e1ee64a 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -19,7 +19,6 @@
 #include <drm/drmP.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_fb_helper.h>
-#include <drm/drm_of.h>
 #include <linux/dma-mapping.h>
 #include <linux/pm_runtime.h>
 #include <linux/module.h>
@@ -419,6 +418,29 @@ static int compare_of(struct device *dev, void *data)
         return dev->of_node == np;
 }
 
+static void rockchip_add_endpoints(struct device *dev,
+                                   struct component_match **match,
+                                   struct device_node *port)
+{
+        struct device_node *ep, *remote;
+
+        for_each_child_of_node(port, ep) {
+                remote = of_graph_get_remote_port_parent(ep);
+                if (!remote || !of_device_is_available(remote)) {
+                        of_node_put(remote);
+                        continue;
+                } else if (!of_device_is_available(remote->parent)) {
+                        dev_warn(dev, "parent device of %s is not available\n",
+                                 remote->full_name);
+                        of_node_put(remote);
+                        continue;
+                }
+
+                component_match_add(dev, match, compare_of, remote);
+                of_node_put(remote);
+        }
+}
+
 static int rockchip_drm_bind(struct device *dev)
 {
         struct drm_device *drm;
@@ -461,14 +483,61 @@ static const struct component_master_ops rockchip_drm_ops = {
 
 static int rockchip_drm_platform_probe(struct platform_device *pdev)
 {
-        int ret = drm_of_component_probe(&pdev->dev, compare_of,
-                                         &rockchip_drm_ops);
+        struct device *dev = &pdev->dev;
+        struct component_match *match = NULL;
+        struct device_node *np = dev->of_node;
+        struct device_node *port;
+        int i;
 
-        /* keep compatibility with old code that was returning -ENODEV */
-        if (ret == -EINVAL)
+        if (!np)
                 return -ENODEV;
+        /*
+         * Bind the crtc ports first, so that
+         * drm_of_find_possible_crtcs called from encoder .bind callbacks
+         * works as expected.
+         */
+        for (i = 0;; i++) {
+                port = of_parse_phandle(np, "ports", i);
+                if (!port)
+                        break;
+
+                if (!of_device_is_available(port->parent)) {
+                        of_node_put(port);
+                        continue;
+                }
 
-        return ret;
+                component_match_add(dev, &match, compare_of, port->parent);
+                of_node_put(port);
+        }
+
+        if (i == 0) {
+                dev_err(dev, "missing 'ports' property\n");
+                return -ENODEV;
+        }
+
+        if (!match) {
+                dev_err(dev, "No available vop found for display-subsystem.\n");
+                return -ENODEV;
+        }
+        /*
+         * For each bound crtc, bind the encoders attached to its
+         * remote endpoint.
+         */
+        for (i = 0;; i++) {
+                port = of_parse_phandle(np, "ports", i);
+                if (!port)
+                        break;
+
+                if (!of_device_is_available(port->parent)) {
+                        of_node_put(port);
+                        continue;
+                }
+
+                rockchip_add_endpoints(dev, &match, port);
+                of_node_put(port);
+        }
+
+        return component_master_add_with_match(dev, &rockchip_drm_ops, match);
 }
 
 static int rockchip_drm_platform_remove(struct platform_device *pdev)
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index 8c5e8b91a3cb..0b69a7753558 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -158,7 +158,7 @@
 /* add more to the end as needed */
 
 #define fourcc_mod_code(vendor, val) \
-        ((((u64)DRM_FORMAT_MOD_VENDOR_## vendor) << 56) | (val & 0x00ffffffffffffffULL))
+        ((((__u64)DRM_FORMAT_MOD_VENDOR_## vendor) << 56) | (val & 0x00ffffffffffffffULL))
 
 /*
  * Format Modifier tokens: