samsung: add common exynos_drm_connector

Bring some connector creation logic from panel driver to exynos-drm
driver. This ensure all connector properties are created before drm
driver finishes registration and panel drivers can be loaded/unloaded
later.

Bug: 170400443
Change-Id: I2abcb87785d66360765fb7fb97538a8a414368aa
Signed-off-by: Adrian Salido <salidoa@google.com>

1 files changed, 62 insertions, 0 deletions

diff --git a/samsung/exynos_drm_connector.h b/samsung/exynos_drm_connector.h
new file mode 100644
index 0000000..039d2e4
--- /dev/null
+++ b/samsung/exynos_drm_connector.h
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020 Google LLC
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _EXYNOS_DRM_CONNECTOR_H_
+#define _EXYNOS_DRM_CONNECTOR_H_
+
+#include <drm/drm_connector.h>
+
+struct exynos_drm_connector;
+
+struct exynos_drm_connector_properties {
+	struct drm_property *max_luminance;
+	struct drm_property *max_avg_luminance;
+	struct drm_property *min_luminance;
+	struct drm_property *hdr_formats;
+	struct drm_property *lp_mode;
+};
+
+struct exynos_drm_connector_state {
+	struct drm_connector_state base;
+};
+
+#define to_exynos_connector_state(connector_state) \
+	container_of((connector_state), struct exynos_drm_connector_state, base)
+
+struct exynos_drm_connector_funcs {
+	void (*atomic_print_state)(struct drm_printer *p,
+				   const struct exynos_drm_connector_state *state);
+	int (*atomic_set_property)(struct exynos_drm_connector *exynos_connector,
+				   struct exynos_drm_connector_state *exynos_state,
+				   struct drm_property *property,
+				   uint64_t val);
+	int (*atomic_get_property)(struct exynos_drm_connector *exynos_connector,
+				   const struct exynos_drm_connector_state *exynos_state,
+				   struct drm_property *property,
+				   uint64_t *val);
+};
+
+struct exynos_drm_connector {
+	struct drm_connector base;
+	const struct exynos_drm_connector_funcs *funcs;
+};
+
+#define to_exynos_connector(connector) \
+	container_of((connector), struct exynos_drm_connector, base)
+
+bool is_exynos_drm_connector(const struct drm_connector *connector);
+int exynos_drm_connector_init(struct drm_device *dev,
+			      struct exynos_drm_connector *exynos_connector,
+			      const struct exynos_drm_connector_funcs *funcs,
+			      int connector_type);
+int exynos_drm_connector_create_properties(struct drm_device *dev);
+struct exynos_drm_connector_properties *
+exynos_drm_connector_get_properties(struct exynos_drm_connector *exynos_conector);
+
+#endif /* _EXYNOS_DRM_CONNECTOR_H_ */