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 
10 struct armada_gem_object;
11 
12 struct 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 
33 struct armada_crtc;
34 struct armada_variant;
35 
36 struct 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 
73 void armada_drm_crtc_update_regs(struct armada_crtc *, struct armada_regs *);
74 
75 struct armada_clocking_params {
76 	unsigned long permillage_min;
77 	unsigned long permillage_max;
78 	u32 settable;
79 	u32 div_max;
80 };
81 
82 struct armada_clk_result {
83 	unsigned long desired_clk_hz;
84 	struct clk *clk;
85 	u32 div;
86 };
87 
88 int 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 
94 extern struct platform_driver armada_lcd_platform_driver;
95 
96 #endif
97