drm/exynos: add subdrv open/close functions

Some subdrv need open and close functions call when open and close drm.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

3 files changed, 54 insertions, 0 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_core.c b/drivers/gpu/drm/exynos/exynos_drm_core.c
index 937b0597c8b3..4e29c7174ac5 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_core.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_core.c
@@ -175,3 +175,38 @@ int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *subdrv)
         return 0;
 }
 EXPORT_SYMBOL_GPL(exynos_drm_subdrv_unregister);
+
+int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file)
+{
+        struct exynos_drm_subdrv *subdrv;
+        int ret;
+
+        list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) {
+                if (subdrv->open) {
+                        ret = subdrv->open(dev, subdrv->manager.dev, file);
+                        if (ret)
+                                goto err;
+                }
+        }
+
+        return 0;
+
+err:
+        list_for_each_entry_reverse(subdrv, &subdrv->list, list) {
+                if (subdrv->close)
+                        subdrv->close(dev, subdrv->manager.dev, file);
+        }
+        return ret;
+}
+EXPORT_SYMBOL_GPL(exynos_drm_subdrv_open);
+
+void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file)
+{
+        struct exynos_drm_subdrv *subdrv;
+
+        list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) {
+                if (subdrv->close)
+                        subdrv->close(dev, subdrv->manager.dev, file);
+        }
+}
+EXPORT_SYMBOL_GPL(exynos_drm_subdrv_close);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index 903fcf0f05c7..1d78e039643b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -144,6 +144,13 @@ static int exynos_drm_unload(struct drm_device *dev)
         return 0;
 }
 
+static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
+{
+        DRM_DEBUG_DRIVER("%s\n", __FILE__);
+
+        return exynos_drm_subdrv_open(dev, file);
+}
+
 static void exynos_drm_preclose(struct drm_device *dev,
                                         struct drm_file *file)
 {
@@ -163,6 +170,8 @@ static void exynos_drm_preclose(struct drm_device *dev,
                 }
         }
         spin_unlock_irqrestore(&dev->event_lock, flags);
+
+        exynos_drm_subdrv_close(dev, file);
 }
 
 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
@@ -216,6 +225,7 @@ static struct drm_driver exynos_drm_driver = {
                                   DRIVER_MODESET | DRIVER_GEM,
         .load                   = exynos_drm_load,
         .unload                 = exynos_drm_unload,
+        .open                   = exynos_drm_open,
         .preclose               = exynos_drm_preclose,
         .lastclose              = exynos_drm_lastclose,
         .postclose              = exynos_drm_postclose,
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index f8bac0eb2cb2..a41245402ce4 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -229,6 +229,8 @@ struct exynos_drm_private {
  *      subdrv is registered to it.
  * @remove: this callback is used to release resources created
  *      by probe callback.
+ * @open: this would be called with drm device file open.
+ * @close: this would be called with drm device file close.
  * @manager: subdrv has its own manager to control a hardware appropriately
  *      and we can access a hardware drawing on this manager.
  * @encoder: encoder object owned by this sub driver.
@@ -240,6 +242,10 @@ struct exynos_drm_subdrv {
 
         int (*probe)(struct drm_device *drm_dev, struct device *dev);
         void (*remove)(struct drm_device *dev);
+        int (*open)(struct drm_device *drm_dev, struct device *dev,
+                        struct drm_file *file);
+        void (*close)(struct drm_device *drm_dev, struct device *dev,
+                        struct drm_file *file);
 
         struct exynos_drm_manager manager;
         struct drm_encoder *encoder;
@@ -269,6 +275,9 @@ int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv);
 /* this function removes subdrv list from exynos drm driver */
 int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv);
 
+int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file);
+void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file);
+
 extern struct platform_driver fimd_driver;
 extern struct platform_driver hdmi_driver;
 extern struct platform_driver mixer_driver;