1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/head.h b/drivers/gpu/drm/nouveau/nvkm/engine/disp/head.h
new file mode 100644
index 000000000..84a298919
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/head.h
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: MIT */
+#ifndef __NVKM_DISP_HEAD_H__
+#define __NVKM_DISP_HEAD_H__
+#include "priv.h"
+
+struct nvkm_head {
+	const struct nvkm_head_func *func;
+	struct nvkm_disp *disp;
+	int id;
+
+	struct list_head head;
+
+	struct nvkm_head_state {
+		u16 htotal;
+		u16 hsynce;
+		u16 hblanke;
+		u16 hblanks;
+		u16 vtotal;
+		u16 vsynce;
+		u16 vblanke;
+		u16 vblanks;
+		u32 hz;
+
+		/* Prior to GF119, these are set by the OR. */
+		struct {
+			u8 depth;
+		} or;
+	} arm, asy;
+};
+
+int nvkm_head_new_(const struct nvkm_head_func *, struct nvkm_disp *, int id);
+void nvkm_head_del(struct nvkm_head **);
+int nvkm_head_mthd_scanoutpos(struct nvkm_object *,
+			      struct nvkm_head *, void *, u32);
+struct nvkm_head *nvkm_head_find(struct nvkm_disp *, int id);
+
+struct nvkm_head_func {
+	void (*state)(struct nvkm_head *, struct nvkm_head_state *);
+	void (*rgpos)(struct nvkm_head *, u16 *hline, u16 *vline);
+	void (*rgclk)(struct nvkm_head *, int div);
+	void (*vblank_get)(struct nvkm_head *);
+	void (*vblank_put)(struct nvkm_head *);
+};
+
+int nv50_head_cnt(struct nvkm_disp *, unsigned long *);
+int nv50_head_new(struct nvkm_disp *, int id);
+void nv50_head_rgpos(struct nvkm_head *, u16 *, u16 *);
+
+int gf119_head_cnt(struct nvkm_disp *, unsigned long *);
+int gf119_head_new(struct nvkm_disp *, int id);
+void gf119_head_rgclk(struct nvkm_head *, int);
+
+int gv100_head_cnt(struct nvkm_disp *, unsigned long *);
+int gv100_head_new(struct nvkm_disp *, int id);
+
+#define HEAD_MSG(h,l,f,a...) do {                                              \
+	struct nvkm_head *_h = (h);                                            \
+	nvkm_##l(&_h->disp->engine.subdev, "head-%d: "f"\n", _h->id, ##a);     \
+} while(0)
+#define HEAD_WARN(h,f,a...) HEAD_MSG((h), warn, f, ##a)
+#define HEAD_DBG(h,f,a...) HEAD_MSG((h), debug, f, ##a)
+#endif