1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tegra/hub.h b/drivers/gpu/drm/tegra/hub.h
new file mode 100644
index 0000000000..23c4b2115e
--- /dev/null
+++ b/drivers/gpu/drm/tegra/hub.h
@@ -0,0 +1,97 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2017 NVIDIA CORPORATION.  All rights reserved.
+ */
+
+#ifndef TEGRA_HUB_H
+#define TEGRA_HUB_H 1
+
+#include <drm/drm_plane.h>
+
+#include "plane.h"
+
+struct tegra_dc;
+
+struct tegra_windowgroup {
+	unsigned int usecount;
+	struct mutex lock;
+
+	unsigned int index;
+	struct host1x_client *parent;
+	struct reset_control *rst;
+};
+
+struct tegra_shared_plane {
+	struct tegra_plane base;
+	struct tegra_windowgroup *wgrp;
+};
+
+static inline struct tegra_shared_plane *
+to_tegra_shared_plane(struct drm_plane *plane)
+{
+	return container_of(plane, struct tegra_shared_plane, base.base);
+}
+
+struct tegra_display_hub_soc {
+	unsigned int num_wgrps;
+	bool supports_dsc;
+};
+
+struct tegra_display_hub {
+	struct drm_private_obj base;
+	struct host1x_client client;
+	struct clk *clk_disp;
+	struct clk *clk_dsc;
+	struct clk *clk_hub;
+	struct reset_control *rst;
+
+	unsigned int num_heads;
+	struct clk **clk_heads;
+
+	const struct tegra_display_hub_soc *soc;
+	struct tegra_windowgroup *wgrps;
+};
+
+static inline struct tegra_display_hub *
+to_tegra_display_hub(struct host1x_client *client)
+{
+	return container_of(client, struct tegra_display_hub, client);
+}
+
+struct tegra_display_hub_state {
+	struct drm_private_state base;
+
+	struct tegra_dc *dc;
+	unsigned long rate;
+	struct clk *clk;
+};
+
+static inline struct tegra_display_hub_state *
+to_tegra_display_hub_state(struct drm_private_state *priv)
+{
+	return container_of(priv, struct tegra_display_hub_state, base);
+}
+
+struct tegra_plane;
+
+int tegra_display_hub_prepare(struct tegra_display_hub *hub);
+void tegra_display_hub_cleanup(struct tegra_display_hub *hub);
+
+struct drm_plane *tegra_shared_plane_create(struct drm_device *drm,
+					    struct tegra_dc *dc,
+					    unsigned int wgrp,
+					    unsigned int index);
+
+int tegra_display_hub_atomic_check(struct drm_device *drm,
+				   struct drm_atomic_state *state);
+void tegra_display_hub_atomic_commit(struct drm_device *drm,
+				     struct drm_atomic_state *state);
+
+#define DC_CMD_IHUB_COMMON_MISC_CTL 0x068
+#define  LATENCY_EVENT (1 << 3)
+
+#define DC_DISP_IHUB_COMMON_DISPLAY_FETCH_METER 0x451
+#define  CURS_SLOTS(x) (((x) & 0xff) << 8)
+#define  WGRP_SLOTS(x) (((x) & 0xff) << 0)
+
+#endif /* TEGRA_HUB_H */