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 base;
82 struct dpu_hw_blk_reg_map hw;
83
84 /* intf */
85 enum dpu_intf idx;
86 const struct dpu_intf_cfg *cap;
87 const struct dpu_mdss_cfg *mdss;
88
89 /* ops */
90 struct dpu_hw_intf_ops ops;
91 };
92
93 /**
94 * to_dpu_hw_intf - convert base object dpu_hw_base to container
95 * @hw: Pointer to base hardware block
96 * return: Pointer to hardware block container
97 */
to_dpu_hw_intf(struct dpu_hw_blk * hw)98 static inline struct dpu_hw_intf *to_dpu_hw_intf(struct dpu_hw_blk *hw)
99 {
100 return container_of(hw, struct dpu_hw_intf, base);
101 }
102
103 /**
104 * dpu_hw_intf_init(): Initializes the intf driver for the passed
105 * interface idx.
106 * @idx: interface index for which driver object is required
107 * @addr: mapped register io address of MDP
108 * @m : pointer to mdss catalog data
109 */
110 struct dpu_hw_intf *dpu_hw_intf_init(enum dpu_intf idx,
111 void __iomem *addr,
112 const struct dpu_mdss_cfg *m);
113
114 /**
115 * dpu_hw_intf_destroy(): Destroys INTF driver context
116 * @intf: Pointer to INTF driver context
117 */
118 void dpu_hw_intf_destroy(struct dpu_hw_intf *intf);
119
120 #endif /*_DPU_HW_INTF_H */
121