1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
3  */
4 
5 #ifndef _DPU_HW_INTF_H
6 #define _DPU_HW_INTF_H
7 
8 #include "dpu_hw_catalog.h"
9 #include "dpu_hw_mdss.h"
10 #include "dpu_hw_util.h"
11 #include "dpu_hw_blk.h"
12 
13 struct dpu_hw_intf;
14 
15 /* intf timing settings */
16 struct intf_timing_params {
17 	u32 width;		/* active width */
18 	u32 height;		/* active height */
19 	u32 xres;		/* Display panel width */
20 	u32 yres;		/* Display panel height */
21 
22 	u32 h_back_porch;
23 	u32 h_front_porch;
24 	u32 v_back_porch;
25 	u32 v_front_porch;
26 	u32 hsync_pulse_width;
27 	u32 vsync_pulse_width;
28 	u32 hsync_polarity;
29 	u32 vsync_polarity;
30 	u32 border_clr;
31 	u32 underflow_clr;
32 	u32 hsync_skew;
33 };
34 
35 struct intf_prog_fetch {
36 	u8 enable;
37 	/* vsync counter for the front porch pixel line */
38 	u32 fetch_start;
39 };
40 
41 struct intf_status {
42 	u8 is_en;		/* interface timing engine is enabled or not */
43 	u8 is_prog_fetch_en;	/* interface prog fetch counter is enabled or not */
44 	u32 frame_count;	/* frame count since timing engine enabled */
45 	u32 line_count;		/* current line count including blanking */
46 };
47 
48 /**
49  * struct dpu_hw_intf_ops : Interface to the interface Hw driver functions
50  *  Assumption is these functions will be called after clocks are enabled
51  * @ setup_timing_gen : programs the timing engine
52  * @ setup_prog_fetch : enables/disables the programmable fetch logic
53  * @ enable_timing: enable/disable timing engine
54  * @ get_status: returns if timing engine is enabled or not
55  * @ get_line_count: reads current vertical line counter
56  * @bind_pingpong_blk: enable/disable the connection with pingpong which will
57  *                     feed pixels to this interface
58  */
59 struct dpu_hw_intf_ops {
60 	void (*setup_timing_gen)(struct dpu_hw_intf *intf,
61 			const struct intf_timing_params *p,
62 			const struct dpu_format *fmt);
63 
64 	void (*setup_prg_fetch)(struct dpu_hw_intf *intf,
65 			const struct intf_prog_fetch *fetch);
66 
67 	void (*enable_timing)(struct dpu_hw_intf *intf,
68 			u8 enable);
69 
70 	void (*get_status)(struct dpu_hw_intf *intf,
71 			struct intf_status *status);
72 
73 	u32 (*get_line_count)(struct dpu_hw_intf *intf);
74 
75 	void (*bind_pingpong_blk)(struct dpu_hw_intf *intf,
76 			bool enable,
77 			const enum dpu_pingpong pp);
78 };
79 
80 struct dpu_hw_intf {
81 	struct dpu_hw_blk_reg_map hw;
82 
83 	/* intf */
84 	enum dpu_intf idx;
85 	const struct dpu_intf_cfg *cap;
86 	const struct dpu_mdss_cfg *mdss;
87 
88 	/* ops */
89 	struct dpu_hw_intf_ops ops;
90 };
91 
92 /**
93  * dpu_hw_intf_init(): Initializes the intf driver for the passed
94  * interface idx.
95  * @idx:  interface index for which driver object is required
96  * @addr: mapped register io address of MDP
97  * @m :   pointer to mdss catalog data
98  */
99 struct dpu_hw_intf *dpu_hw_intf_init(enum dpu_intf idx,
100 		void __iomem *addr,
101 		const struct dpu_mdss_cfg *m);
102 
103 /**
104  * dpu_hw_intf_destroy(): Destroys INTF driver context
105  * @intf:   Pointer to INTF driver context
106  */
107 void dpu_hw_intf_destroy(struct dpu_hw_intf *intf);
108 
109 #endif /*_DPU_HW_INTF_H */
110