1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2012 Russell King
 4 */
 5#ifndef ARMADA_CRTC_H
 6#define ARMADA_CRTC_H
 7
 8#include <drm/drm_crtc.h>
 9
10struct armada_gem_object;
11
12struct armada_regs {
13	uint32_t offset;
14	uint32_t mask;
15	uint32_t val;
16};
17
18#define armada_reg_queue_mod(_r, _i, _v, _m, _o)	\
19	do {					\
20		struct armada_regs *__reg = _r;	\
21		__reg[_i].offset = _o;		\
22		__reg[_i].mask = ~(_m);		\
23		__reg[_i].val = _v;		\
24		_i++;				\
25	} while (0)
26
27#define armada_reg_queue_set(_r, _i, _v, _o)	\
28	armada_reg_queue_mod(_r, _i, _v, ~0, _o)
29
30#define armada_reg_queue_end(_r, _i)		\
31	armada_reg_queue_mod(_r, _i, 0, 0, ~0)
32
33struct armada_crtc;
34struct armada_variant;
35
36struct armada_crtc {
37	struct drm_crtc		crtc;
38	const struct armada_variant *variant;
39	void			*variant_data;
40	unsigned		num;
41	void __iomem		*base;
42	struct clk		*clk;
43	struct {
44		uint32_t	spu_v_h_total;
45		uint32_t	spu_v_porch;
46		uint32_t	spu_adv_reg;
47	} v[2];
48	bool			interlaced;
49	bool			cursor_update;
50
51	struct armada_gem_object	*cursor_obj;
52	int			cursor_x;
53	int			cursor_y;
54	uint32_t		cursor_hw_pos;
55	uint32_t		cursor_hw_sz;
56	uint32_t		cursor_w;
57	uint32_t		cursor_h;
58
59	uint32_t		cfg_dumb_ctrl;
60	uint32_t		spu_iopad_ctrl;
61
62	spinlock_t		irq_lock;
63	uint32_t		irq_ena;
64
65	bool			update_pending;
66	struct drm_pending_vblank_event *event;
67	struct armada_regs	atomic_regs[32];
68	struct armada_regs	*regs;
69	unsigned int		regs_idx;
70};
71#define drm_to_armada_crtc(c) container_of(c, struct armada_crtc, crtc)
72
73void armada_drm_crtc_update_regs(struct armada_crtc *, struct armada_regs *);
74
75struct armada_clocking_params {
76	unsigned long permillage_min;
77	unsigned long permillage_max;
78	u32 settable;
79	u32 div_max;
80};
81
82struct armada_clk_result {
83	unsigned long desired_clk_hz;
84	struct clk *clk;
85	u32 div;
86};
87
88int armada_crtc_select_clock(struct armada_crtc *dcrtc,
89			     struct armada_clk_result *res,
90			     const struct armada_clocking_params *params,
91			     struct clk *clks[], size_t num_clks,
92			     unsigned long desired_khz);
93
94extern struct platform_driver armada_lcd_platform_driver;
95
96#endif