1/* SPDX-License-Identifier: MIT */
  2#ifndef __NV50_CRC_H__
  3#define __NV50_CRC_H__
  4
  5#include <linux/mutex.h>
  6#include <drm/drm_crtc.h>
  7#include <drm/drm_vblank_work.h>
  8
  9#include <nvif/mem.h>
 10#include <nvkm/subdev/bios.h>
 11#include "nouveau_encoder.h"
 12
 13struct nv50_atom;
 14struct nv50_disp;
 15struct nv50_head;
 16
 17#if IS_ENABLED(CONFIG_DEBUG_FS)
 18enum nv50_crc_source {
 19	NV50_CRC_SOURCE_NONE = 0,
 20	NV50_CRC_SOURCE_AUTO,
 21	NV50_CRC_SOURCE_RG,
 22	NV50_CRC_SOURCE_OUTP_ACTIVE,
 23	NV50_CRC_SOURCE_OUTP_COMPLETE,
 24	NV50_CRC_SOURCE_OUTP_INACTIVE,
 25};
 26
 27/* RG -> SF (DP only)
 28 *    -> SOR
 29 *    -> PIOR
 30 *    -> DAC
 31 */
 32enum nv50_crc_source_type {
 33	NV50_CRC_SOURCE_TYPE_NONE = 0,
 34	NV50_CRC_SOURCE_TYPE_SOR,
 35	NV50_CRC_SOURCE_TYPE_PIOR,
 36	NV50_CRC_SOURCE_TYPE_DAC,
 37	NV50_CRC_SOURCE_TYPE_RG,
 38	NV50_CRC_SOURCE_TYPE_SF,
 39};
 40
 41struct nv50_crc_notifier_ctx {
 42	struct nvif_mem mem;
 43	struct nvif_object ntfy;
 44};
 45
 46struct nv50_crc_atom {
 47	enum nv50_crc_source src;
 48};
 49
 50struct nv50_crc_func {
 51	int (*set_src)(struct nv50_head *, int or, enum nv50_crc_source_type type,
 52		       struct nv50_crc_notifier_ctx *ctx);
 53	int (*set_ctx)(struct nv50_head *, struct nv50_crc_notifier_ctx *);
 54	u32 (*get_entry)(struct nv50_head *, struct nv50_crc_notifier_ctx *,
 55			 enum nv50_crc_source, int idx);
 56	bool (*ctx_finished)(struct nv50_head *,
 57			     struct nv50_crc_notifier_ctx *);
 58	short flip_threshold;
 59	short num_entries;
 60	size_t notifier_len;
 61};
 62
 63struct nv50_crc {
 64	spinlock_t lock;
 65	struct nv50_crc_notifier_ctx ctx[2];
 66	struct drm_vblank_work flip_work;
 67	enum nv50_crc_source src;
 68
 69	u64 frame;
 70	short entry_idx;
 71	short flip_threshold;
 72	u8 ctx_idx : 1;
 73	bool ctx_changed : 1;
 74};
 75
 76void nv50_crc_init(struct drm_device *dev);
 77int nv50_head_crc_late_register(struct nv50_head *);
 78void nv50_crc_handle_vblank(struct nv50_head *head);
 79
 80int nv50_crc_verify_source(struct drm_crtc *, const char *, size_t *);
 81const char *const *nv50_crc_get_sources(struct drm_crtc *, size_t *);
 82int nv50_crc_set_source(struct drm_crtc *, const char *);
 83
 84int nv50_crc_atomic_check_head(struct nv50_head *, struct nv50_head_atom *,
 85			       struct nv50_head_atom *);
 86void nv50_crc_atomic_check_outp(struct nv50_atom *atom);
 87void nv50_crc_atomic_stop_reporting(struct drm_atomic_state *);
 88void nv50_crc_atomic_init_notifier_contexts(struct drm_atomic_state *);
 89void nv50_crc_atomic_release_notifier_contexts(struct drm_atomic_state *);
 90void nv50_crc_atomic_start_reporting(struct drm_atomic_state *);
 91void nv50_crc_atomic_set(struct nv50_head *, struct nv50_head_atom *);
 92void nv50_crc_atomic_clr(struct nv50_head *);
 93
 94extern const struct nv50_crc_func crc907d;
 95extern const struct nv50_crc_func crcc37d;
 96extern const struct nv50_crc_func crcc57d;
 97
 98#else /* IS_ENABLED(CONFIG_DEBUG_FS) */
 99struct nv50_crc {};
100struct nv50_crc_func {};
101struct nv50_crc_atom {};
102
103#define nv50_crc_verify_source NULL
104#define nv50_crc_get_sources NULL
105#define nv50_crc_set_source NULL
106
107static inline void nv50_crc_init(struct drm_device *dev) {}
108static inline int
109nv50_head_crc_late_register(struct nv50_head *head) { return 0; }
110static inline void nv50_crc_handle_vblank(struct nv50_head *head) {}
111
112static inline int
113nv50_crc_atomic_check_head(struct nv50_head *head,
114			   struct nv50_head_atom *asyh,
115			   struct nv50_head_atom *armh) { return 0; }
116static inline void nv50_crc_atomic_check_outp(struct nv50_atom *atom) {}
117static inline void
118nv50_crc_atomic_stop_reporting(struct drm_atomic_state *state) {}
119static inline void
120nv50_crc_atomic_init_notifier_contexts(struct drm_atomic_state *state) {}
121static inline void
122nv50_crc_atomic_release_notifier_contexts(struct drm_atomic_state *state) {}
123static inline void
124nv50_crc_atomic_start_reporting(struct drm_atomic_state *state) {}
125static inline void
126nv50_crc_atomic_set(struct nv50_head *head, struct nv50_head_atom *state) {}
127static inline void
128nv50_crc_atomic_clr(struct nv50_head *head) {}
129
130#endif /* IS_ENABLED(CONFIG_DEBUG_FS) */
131#endif /* !__NV50_CRC_H__ */