drm/exynos: use a new anon file for exynos gem mmaper

[karo-tx-linux.git] / drivers / gpu / drm / exynos / exynos_drm_drv.c

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index b676006a95a0118951f8e12d04f8a6fff0c49fb0..9d096a0c5f8d5f6bf0583d37f5efe433085504e4 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -14,6 +14,8 @@
 #include <drm/drmP.h>
 #include <drm/drm_crtc_helper.h>
 
+#include <linux/anon_inodes.h>
+
 #include <drm/exynos_drm.h>
 
 #include "exynos_drm_drv.h"
@@ -119,6 +121,8 @@ static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
 
        drm_vblank_offdelay = VBLANK_OFF_DELAY;
 
+       platform_set_drvdata(dev->platformdev, dev);
+
        return 0;
 
 err_drm_device:
@@ -150,9 +154,14 @@ static int exynos_drm_unload(struct drm_device *dev)
        return 0;
 }
 
+static const struct file_operations exynos_drm_gem_fops = {
+       .mmap = exynos_drm_gem_mmap_buffer,
+};
+
 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
 {
        struct drm_exynos_file_private *file_priv;
+       struct file *anon_filp;
        int ret;
 
        file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
@@ -167,34 +176,57 @@ static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
                file->driver_priv = NULL;
        }
 
+       anon_filp = anon_inode_getfile("exynos_gem", &exynos_drm_gem_fops,
+                                       NULL, 0);
+       if (IS_ERR(anon_filp)) {
+               kfree(file_priv);
+               return PTR_ERR(anon_filp);
+       }
+
+       anon_filp->f_mode = FMODE_READ | FMODE_WRITE;
+       file_priv->anon_filp = anon_filp;
+
        return ret;
 }
 
 static void exynos_drm_preclose(struct drm_device *dev,
                                        struct drm_file *file)
+{
+       exynos_drm_subdrv_close(dev, file);
+}
+
+static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
 {
        struct exynos_drm_private *private = dev->dev_private;
-       struct drm_pending_vblank_event *e, *t;
+       struct drm_exynos_file_private *file_priv;
+       struct drm_pending_vblank_event *v, *vt;
+       struct drm_pending_event *e, *et;
        unsigned long flags;
 
-       /* release events of current file */
+       if (!file->driver_priv)
+               return;
+
+       /* Release all events not unhandled by page flip handler. */
        spin_lock_irqsave(&dev->event_lock, flags);
-       list_for_each_entry_safe(e, t, &private->pageflip_event_list,
+       list_for_each_entry_safe(v, vt, &private->pageflip_event_list,
                        base.link) {
-               if (e->base.file_priv == file) {
-                       list_del(&e->base.link);
-                       e->base.destroy(&e->base);
+               if (v->base.file_priv == file) {
+                       list_del(&v->base.link);
+                       drm_vblank_put(dev, v->pipe);
+                       v->base.destroy(&v->base);
                }
        }
-       spin_unlock_irqrestore(&dev->event_lock, flags);
 
-       exynos_drm_subdrv_close(dev, file);
-}
+       /* Release all events handled by page flip handler but not freed. */
+       list_for_each_entry_safe(e, et, &file->event_list, link) {
+               list_del(&e->link);
+               e->destroy(e);
+       }
+       spin_unlock_irqrestore(&dev->event_lock, flags);
 
-static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
-{
-       if (!file->driver_priv)
-               return;
+       file_priv = file->driver_priv;
+       if (file_priv->anon_filp)
+               fput(file_priv->anon_filp);
 
        kfree(file->driver_priv);
        file->driver_priv = NULL;
@@ -296,7 +328,7 @@ static int exynos_drm_platform_probe(struct platform_device *pdev)
 
 static int exynos_drm_platform_remove(struct platform_device *pdev)
 {
-       drm_platform_exit(&exynos_drm_driver, pdev);
+       drm_put_dev(platform_get_drvdata(pdev));
 
        return 0;
 }