Revert "drm/rockchip: fixup display reference count"

[firefly-linux-kernel-4.4.55.git] / drivers / gpu / drm / rockchip / rockchip_drm_drv.c

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index f3d954d01201812951de1abaa545706992976818..59605f9056af017a505795c3ccab1e9ec4da53ec 100644 (file)
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -149,8 +149,6 @@ static int init_loader_memory(struct drm_device *drm_dev)
        }
 
        if (private->domain) {
-               int prot = IOMMU_READ | IOMMU_WRITE;
-
                memset(&logo->mm, 0, sizeof(logo->mm));
                ret = drm_mm_insert_node_generic(&private->mm, &logo->mm,
                                                 size, PAGE_SIZE,
@@ -162,8 +160,10 @@ static int init_loader_memory(struct drm_device *drm_dev)
 
                logo->dma_addr = logo->mm.start;
 
-               if (iommu_map_sg(private->domain, logo->dma_addr, sgt->sgl,
-                                sgt->nents, prot) < size) {
+               logo->iommu_map_size = iommu_map_sg(private->domain,
+                                                   logo->dma_addr, sgt->sgl,
+                                                   sgt->nents, IOMMU_READ);
+               if (logo->iommu_map_size < size) {
                        DRM_ERROR("failed to map buffer");
                        ret = -ENOMEM;
                        goto err_remove_node;
@@ -485,13 +485,17 @@ static int update_state(struct drm_device *drm_dev,
                    !connector_helper_funcs->best_encoder)
                        return -ENXIO;
                encoder = connector_helper_funcs->best_encoder(connector);
+               if (!encoder)
+                       return -ENXIO;
                encoder_helper_funcs = encoder->helper_private;
-               if (!encoder || !encoder_helper_funcs->atomic_check)
+               if (!encoder_helper_funcs->atomic_check)
                        return -ENXIO;
                ret = encoder_helper_funcs->atomic_check(encoder, crtc->state,
                                                         conn_state);
                if (ret)
                        return ret;
+               if (encoder_helper_funcs->mode_set)
+                       encoder_helper_funcs->mode_set(encoder, mode, mode);
                priv->crtc_funcs[pipe]->loader_protect(crtc, true);
        }
 
@@ -679,7 +683,7 @@ int rockchip_register_crtc_funcs(struct drm_crtc *crtc,
        int pipe = drm_crtc_index(crtc);
        struct rockchip_drm_private *priv = crtc->dev->dev_private;
 
-       if (pipe > ROCKCHIP_MAX_CRTC)
+       if (pipe >= ROCKCHIP_MAX_CRTC)
                return -EINVAL;
 
        priv->crtc_funcs[pipe] = crtc_funcs;
@@ -692,7 +696,7 @@ void rockchip_unregister_crtc_funcs(struct drm_crtc *crtc)
        int pipe = drm_crtc_index(crtc);
        struct rockchip_drm_private *priv = crtc->dev->dev_private;
 
-       if (pipe > ROCKCHIP_MAX_CRTC)
+       if (pipe >= ROCKCHIP_MAX_CRTC)
                return;
 
        priv->crtc_funcs[pipe] = NULL;
@@ -771,6 +775,72 @@ static void rockchip_iommu_cleanup(struct drm_device *drm_dev)
        iommu_domain_free(private->domain);
 }
 
+#ifdef CONFIG_DEBUG_FS
+static int rockchip_drm_mm_dump(struct seq_file *s, void *data)
+{
+       struct drm_info_node *node = s->private;
+       struct drm_minor *minor = node->minor;
+       struct drm_device *drm_dev = minor->dev;
+       struct rockchip_drm_private *priv = drm_dev->dev_private;
+       int ret;
+
+       mutex_lock(&priv->mm_lock);
+
+       ret = drm_mm_dump_table(s, &priv->mm);
+
+       mutex_unlock(&priv->mm_lock);
+
+       return ret;
+}
+
+static int rockchip_drm_summary_show(struct seq_file *s, void *data)
+{
+       struct drm_info_node *node = s->private;
+       struct drm_minor *minor = node->minor;
+       struct drm_device *drm_dev = minor->dev;
+       struct rockchip_drm_private *priv = drm_dev->dev_private;
+       struct drm_crtc *crtc;
+
+       drm_for_each_crtc(crtc, drm_dev) {
+               int pipe = drm_crtc_index(crtc);
+
+               if (priv->crtc_funcs[pipe] &&
+                   priv->crtc_funcs[pipe]->debugfs_dump)
+                       priv->crtc_funcs[pipe]->debugfs_dump(crtc, s);
+       }
+
+       return 0;
+}
+
+static struct drm_info_list rockchip_debugfs_files[] = {
+       { "summary", rockchip_drm_summary_show, 0, NULL },
+       { "mm_dump", rockchip_drm_mm_dump, 0, NULL },
+};
+
+static int rockchip_drm_debugfs_init(struct drm_minor *minor)
+{
+       struct drm_device *dev = minor->dev;
+       int ret;
+
+       ret = drm_debugfs_create_files(rockchip_debugfs_files,
+                                      ARRAY_SIZE(rockchip_debugfs_files),
+                                      minor->debugfs_root,
+                                      minor);
+       if (ret) {
+               dev_err(dev->dev, "could not install rockchip_debugfs_list\n");
+               return ret;
+       }
+
+       return 0;
+}
+
+static void rockchip_drm_debugfs_cleanup(struct drm_minor *minor)
+{
+       drm_debugfs_remove_files(rockchip_debugfs_files,
+                                ARRAY_SIZE(rockchip_debugfs_files), minor);
+}
+#endif
+
 static int rockchip_drm_bind(struct device *dev)
 {
        struct drm_device *drm_dev;
@@ -781,6 +851,10 @@ static int rockchip_drm_bind(struct device *dev)
        if (!drm_dev)
                return -ENOMEM;
 
+       ret = drm_dev_set_unique(drm_dev, "%s", dev_name(dev));
+       if (ret)
+               goto err_free;
+
        dev_set_drvdata(dev, drm_dev);
 
        private = devm_kzalloc(drm_dev->dev, sizeof(*private), GFP_KERNEL);
@@ -1060,6 +1134,10 @@ static struct drm_driver rockchip_drm_driver = {
        .gem_prime_vmap         = rockchip_gem_prime_vmap,
        .gem_prime_vunmap       = rockchip_gem_prime_vunmap,
        .gem_prime_mmap         = rockchip_gem_mmap_buf,
+#ifdef CONFIG_DEBUG_FS
+       .debugfs_init           = rockchip_drm_debugfs_init,
+       .debugfs_cleanup        = rockchip_drm_debugfs_cleanup,
+#endif
        .ioctls                 = rockchip_ioctls,
        .num_ioctls             = ARRAY_SIZE(rockchip_ioctls),
        .fops                   = &rockchip_drm_driver_fops,