Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / gpu / drm / exynos / exynos_drm_core.c

diff --git a/kernel/drivers/gpu/drm/exynos/exynos_drm_core.c b/kernel/drivers/gpu/drm/exynos/exynos_drm_core.c
new file mode 100644 (file)
index 0000000..4c9f972
--- /dev/null
+++ b/kernel/drivers/gpu/drm/exynos/exynos_drm_core.c
@@ -0,0 +1,161 @@
+/* exynos_drm_core.c
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * Author:
+ *     Inki Dae <inki.dae@samsung.com>
+ *     Joonyoung Shim <jy0922.shim@samsung.com>
+ *     Seung-Woo Kim <sw0312.kim@samsung.com>
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <drm/drmP.h>
+#include "exynos_drm_drv.h"
+#include "exynos_drm_crtc.h"
+#include "exynos_drm_encoder.h"
+#include "exynos_drm_fbdev.h"
+
+static LIST_HEAD(exynos_drm_subdrv_list);
+
+int exynos_drm_create_enc_conn(struct drm_device *dev,
+                                       struct exynos_drm_display *display)
+{
+       struct drm_encoder *encoder;
+       int ret;
+       unsigned long possible_crtcs = 0;
+
+       ret = exynos_drm_crtc_get_pipe_from_type(dev, display->type);
+       if (ret < 0)
+               return ret;
+
+       possible_crtcs |= 1 << ret;
+
+       /* create and initialize a encoder for this sub driver. */
+       encoder = exynos_drm_encoder_create(dev, display, possible_crtcs);
+       if (!encoder) {
+               DRM_ERROR("failed to create encoder\n");
+               return -EFAULT;
+       }
+
+       display->encoder = encoder;
+
+       ret = display->ops->create_connector(display, encoder);
+       if (ret) {
+               DRM_ERROR("failed to create connector ret = %d\n", ret);
+               goto err_destroy_encoder;
+       }
+
+       return 0;
+
+err_destroy_encoder:
+       encoder->funcs->destroy(encoder);
+       return ret;
+}
+
+int exynos_drm_subdrv_register(struct exynos_drm_subdrv *subdrv)
+{
+       if (!subdrv)
+               return -EINVAL;
+
+       list_add_tail(&subdrv->list, &exynos_drm_subdrv_list);
+
+       return 0;
+}
+EXPORT_SYMBOL_GPL(exynos_drm_subdrv_register);
+
+int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *subdrv)
+{
+       if (!subdrv)
+               return -EINVAL;
+
+       list_del(&subdrv->list);
+
+       return 0;
+}
+EXPORT_SYMBOL_GPL(exynos_drm_subdrv_unregister);
+
+int exynos_drm_device_subdrv_probe(struct drm_device *dev)
+{
+       struct exynos_drm_subdrv *subdrv, *n;
+       int err;
+
+       if (!dev)
+               return -EINVAL;
+
+       list_for_each_entry_safe(subdrv, n, &exynos_drm_subdrv_list, list) {
+               if (subdrv->probe) {
+                       subdrv->drm_dev = dev;
+
+                       /*
+                        * this probe callback would be called by sub driver
+                        * after setting of all resources to this sub driver,
+                        * such as clock, irq and register map are done.
+                        */
+                       err = subdrv->probe(dev, subdrv->dev);
+                       if (err) {
+                               DRM_DEBUG("exynos drm subdrv probe failed.\n");
+                               list_del(&subdrv->list);
+                               continue;
+                       }
+               }
+       }
+
+       return 0;
+}
+EXPORT_SYMBOL_GPL(exynos_drm_device_subdrv_probe);
+
+int exynos_drm_device_subdrv_remove(struct drm_device *dev)
+{
+       struct exynos_drm_subdrv *subdrv;
+
+       if (!dev) {
+               WARN(1, "Unexpected drm device unregister!\n");
+               return -EINVAL;
+       }
+
+       list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) {
+               if (subdrv->remove)
+                       subdrv->remove(dev, subdrv->dev);
+       }
+
+       return 0;
+}
+EXPORT_SYMBOL_GPL(exynos_drm_device_subdrv_remove);
+
+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->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->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->dev, file);
+       }
+}
+EXPORT_SYMBOL_GPL(exynos_drm_subdrv_close);