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 
15 struct drm_encoder;
16 struct drm_mode_set;
17 
18 struct 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 
30 struct gma_range_t {
31 	int min, max;
32 };
33 
34 struct gma_p2_t {
35 	int dot_limit;
36 	int p2_slow, p2_fast;
37 };
38 
39 struct 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 
47 struct 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 */
56 extern bool gma_pipe_has_type(struct drm_crtc *crtc, int type);
57 extern void gma_wait_for_vblank(struct drm_device *dev);
58 extern int gma_pipe_set_base(struct drm_crtc *crtc, int x, int y,
59 			     struct drm_framebuffer *old_fb);
60 extern 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);
64 extern int gma_crtc_cursor_move(struct drm_crtc *crtc, int x, int y);
65 extern void gma_crtc_load_lut(struct drm_crtc *crtc);
66 extern 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);
69 extern void gma_crtc_dpms(struct drm_crtc *crtc, int mode);
70 extern void gma_crtc_prepare(struct drm_crtc *crtc);
71 extern void gma_crtc_commit(struct drm_crtc *crtc);
72 extern void gma_crtc_disable(struct drm_crtc *crtc);
73 extern void gma_crtc_destroy(struct drm_crtc *crtc);
74 extern int gma_crtc_set_config(struct drm_mode_set *set,
75 			       struct drm_modeset_acquire_ctx *ctx);
76 
77 extern void gma_crtc_save(struct drm_crtc *crtc);
78 extern void gma_crtc_restore(struct drm_crtc *crtc);
79 
80 extern void gma_encoder_prepare(struct drm_encoder *encoder);
81 extern void gma_encoder_commit(struct drm_encoder *encoder);
82 extern void gma_encoder_destroy(struct drm_encoder *encoder);
83 
84 /* Common clock related functions */
85 extern const struct gma_limit_t *gma_limit(struct drm_crtc *crtc, int refclk);
86 extern void gma_clock(int refclk, struct gma_clock_t *clock);
87 extern bool gma_pll_is_valid(struct drm_crtc *crtc,
88 			     const struct gma_limit_t *limit,
89 			     struct gma_clock_t *clock);
90 extern 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
94