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
15struct drm_encoder;
16struct drm_mode_set;
17
18struct gma_clock_t {
19	/* given values */
20	int n;
21	int m1, m2;
22	int p1, p2;
23	/* derived values */
24	int dot;
25	int vco;
26	int m;
27	int p;
28};
29
30struct gma_range_t {
31	int min, max;
32};
33
34struct gma_p2_t {
35	int dot_limit;
36	int p2_slow, p2_fast;
37};
38
39struct gma_limit_t {
40	struct gma_range_t dot, vco, n, m, m1, m2, p, p1;
41	struct gma_p2_t p2;
42	bool (*find_pll)(const struct gma_limit_t *, struct drm_crtc *,
43			 int target, int refclk,
44			 struct gma_clock_t *best_clock);
45};
46
47struct gma_clock_funcs {
48	void (*clock)(int refclk, struct gma_clock_t *clock);
49	const struct gma_limit_t *(*limit)(struct drm_crtc *crtc, int refclk);
50	bool (*pll_is_valid)(struct drm_crtc *crtc,
51			     const struct gma_limit_t *limit,
52			     struct gma_clock_t *clock);
53};
54
55/* Common pipe related functions */
56extern bool gma_pipe_has_type(struct drm_crtc *crtc, int type);
57extern void gma_wait_for_vblank(struct drm_device *dev);
58extern int gma_pipe_set_base(struct drm_crtc *crtc, int x, int y,
59			     struct drm_framebuffer *old_fb);
60extern int gma_crtc_cursor_set(struct drm_crtc *crtc,
61			       struct drm_file *file_priv,
62			       uint32_t handle,
63			       uint32_t width, uint32_t height);
64extern int gma_crtc_cursor_move(struct drm_crtc *crtc, int x, int y);
65extern void gma_crtc_load_lut(struct drm_crtc *crtc);
66extern int gma_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
67			      u16 *blue, u32 size,
68			      struct drm_modeset_acquire_ctx *ctx);
69extern void gma_crtc_dpms(struct drm_crtc *crtc, int mode);
70extern void gma_crtc_prepare(struct drm_crtc *crtc);
71extern void gma_crtc_commit(struct drm_crtc *crtc);
72extern void gma_crtc_disable(struct drm_crtc *crtc);
73extern void gma_crtc_destroy(struct drm_crtc *crtc);
74extern int gma_crtc_set_config(struct drm_mode_set *set,
75			       struct drm_modeset_acquire_ctx *ctx);
76
77extern void gma_crtc_save(struct drm_crtc *crtc);
78extern void gma_crtc_restore(struct drm_crtc *crtc);
79
80extern void gma_encoder_prepare(struct drm_encoder *encoder);
81extern void gma_encoder_commit(struct drm_encoder *encoder);
82extern void gma_encoder_destroy(struct drm_encoder *encoder);
83
84/* Common clock related functions */
85extern const struct gma_limit_t *gma_limit(struct drm_crtc *crtc, int refclk);
86extern void gma_clock(int refclk, struct gma_clock_t *clock);
87extern bool gma_pll_is_valid(struct drm_crtc *crtc,
88			     const struct gma_limit_t *limit,
89			     struct gma_clock_t *clock);
90extern bool gma_find_best_pll(const struct gma_limit_t *limit,
91			      struct drm_crtc *crtc, int target, int refclk,
92			      struct gma_clock_t *best_clock);
93#endif