1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright �� 2006-2011 Intel Corporation
4 *
5 * Authors:
6 *	Eric Anholt <eric@anholt.net>
7 *	Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
8 */
9
10#ifndef _GMA_DISPLAY_H_
11#define _GMA_DISPLAY_H_
12
13#include <linux/pm_runtime.h>
14#include <drm/drm_vblank.h>
15
16struct drm_encoder;
17struct drm_mode_set;
18
19struct gma_clock_t {
20	/* given values */
21	int n;
22	int m1, m2;
23	int p1, p2;
24	/* derived values */
25	int dot;
26	int vco;
27	int m;
28	int p;
29};
30
31struct gma_range_t {
32	int min, max;
33};
34
35struct gma_p2_t {
36	int dot_limit;
37	int p2_slow, p2_fast;
38};
39
40struct gma_limit_t {
41	struct gma_range_t dot, vco, n, m, m1, m2, p, p1;
42	struct gma_p2_t p2;
43	bool (*find_pll)(const struct gma_limit_t *, struct drm_crtc *,
44			 int target, int refclk,
45			 struct gma_clock_t *best_clock);
46};
47
48struct gma_clock_funcs {
49	void (*clock)(int refclk, struct gma_clock_t *clock);
50	const struct gma_limit_t *(*limit)(struct drm_crtc *crtc, int refclk);
51	bool (*pll_is_valid)(struct drm_crtc *crtc,
52			     const struct gma_limit_t *limit,
53			     struct gma_clock_t *clock);
54};
55
56/* Common pipe related functions */
57extern bool gma_pipe_has_type(struct drm_crtc *crtc, int type);
58extern void gma_wait_for_vblank(struct drm_device *dev);
59extern int gma_pipe_set_base(struct drm_crtc *crtc, int x, int y,
60			     struct drm_framebuffer *old_fb);
61extern void gma_crtc_load_lut(struct drm_crtc *crtc);
62extern void gma_crtc_dpms(struct drm_crtc *crtc, int mode);
63extern void gma_crtc_prepare(struct drm_crtc *crtc);
64extern void gma_crtc_commit(struct drm_crtc *crtc);
65extern void gma_crtc_disable(struct drm_crtc *crtc);
66extern void gma_crtc_destroy(struct drm_crtc *crtc);
67extern int gma_crtc_page_flip(struct drm_crtc *crtc,
68			      struct drm_framebuffer *fb,
69			      struct drm_pending_vblank_event *event,
70			      uint32_t page_flip_flags,
71			      struct drm_modeset_acquire_ctx *ctx);
72
73extern void gma_crtc_save(struct drm_crtc *crtc);
74extern void gma_crtc_restore(struct drm_crtc *crtc);
75
76extern const struct drm_crtc_funcs gma_crtc_funcs;
77
78extern void gma_encoder_prepare(struct drm_encoder *encoder);
79extern void gma_encoder_commit(struct drm_encoder *encoder);
80extern void gma_encoder_destroy(struct drm_encoder *encoder);
81
82/* Common clock related functions */
83extern const struct gma_limit_t *gma_limit(struct drm_crtc *crtc, int refclk);
84extern bool gma_pll_is_valid(struct drm_crtc *crtc,
85			     const struct gma_limit_t *limit,
86			     struct gma_clock_t *clock);
87extern bool gma_find_best_pll(const struct gma_limit_t *limit,
88			      struct drm_crtc *crtc, int target, int refclk,
89			      struct gma_clock_t *best_clock);
90#endif
91