1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (C) 2010 Texas Instruments Incorporated - https://www.ti.com/
4  */
5 #ifndef VPBE_DISPLAY_H
6 #define VPBE_DISPLAY_H
7 
8 /* Header files */
9 #include <linux/videodev2.h>
10 #include <media/v4l2-common.h>
11 #include <media/v4l2-fh.h>
12 #include <media/videobuf2-v4l2.h>
13 #include <media/videobuf2-dma-contig.h>
14 #include <media/davinci/vpbe_types.h>
15 #include <media/davinci/vpbe_osd.h>
16 #include <media/davinci/vpbe.h>
17 
18 #define VPBE_DISPLAY_MAX_DEVICES 2
19 
20 enum vpbe_display_device_id {
21 	VPBE_DISPLAY_DEVICE_0,
22 	VPBE_DISPLAY_DEVICE_1
23 };
24 
25 #define VPBE_DISPLAY_DRV_NAME	"vpbe-display"
26 
27 #define VPBE_DISPLAY_MAJOR_RELEASE              1
28 #define VPBE_DISPLAY_MINOR_RELEASE              0
29 #define VPBE_DISPLAY_BUILD                      1
30 #define VPBE_DISPLAY_VERSION_CODE ((VPBE_DISPLAY_MAJOR_RELEASE << 16) | \
31 	(VPBE_DISPLAY_MINOR_RELEASE << 8)  | \
32 	VPBE_DISPLAY_BUILD)
33 
34 #define VPBE_DISPLAY_VALID_FIELD(field)   ((V4L2_FIELD_NONE == field) || \
35 	 (V4L2_FIELD_ANY == field) || (V4L2_FIELD_INTERLACED == field))
36 
37 /* Exp ratio numerator and denominator constants */
38 #define VPBE_DISPLAY_H_EXP_RATIO_N	9
39 #define VPBE_DISPLAY_H_EXP_RATIO_D	8
40 #define VPBE_DISPLAY_V_EXP_RATIO_N	6
41 #define VPBE_DISPLAY_V_EXP_RATIO_D	5
42 
43 /* Zoom multiplication factor */
44 #define VPBE_DISPLAY_ZOOM_4X	4
45 #define VPBE_DISPLAY_ZOOM_2X	2
46 
47 /* Structures */
48 struct display_layer_info {
49 	int enable;
50 	/* Layer ID used by Display Manager */
51 	enum osd_layer id;
52 	struct osd_layer_config config;
53 	enum osd_zoom_factor h_zoom;
54 	enum osd_zoom_factor v_zoom;
55 	enum osd_h_exp_ratio h_exp;
56 	enum osd_v_exp_ratio v_exp;
57 };
58 
59 struct vpbe_disp_buffer {
60 	struct vb2_v4l2_buffer vb;
61 	struct list_head list;
62 };
63 
64 /* vpbe display object structure */
65 struct vpbe_layer {
66 	/* Pointer to the vpbe_display */
67 	struct vpbe_display *disp_dev;
68 	/* Pointer pointing to current v4l2_buffer */
69 	struct vpbe_disp_buffer *cur_frm;
70 	/* Pointer pointing to next v4l2_buffer */
71 	struct vpbe_disp_buffer *next_frm;
72 	/* videobuf specific parameters
73 	 * Buffer queue used in video-buf
74 	 */
75 	struct vb2_queue buffer_queue;
76 	/* Queue of filled frames */
77 	struct list_head dma_queue;
78 	/* Used in video-buf */
79 	spinlock_t irqlock;
80 	/* V4l2 specific parameters */
81 	/* Identifies video device for this layer */
82 	struct video_device video_dev;
83 	/* Used to store pixel format */
84 	struct v4l2_pix_format pix_fmt;
85 	enum v4l2_field buf_field;
86 	/* Video layer configuration params */
87 	struct display_layer_info layer_info;
88 	/* vpbe specific parameters
89 	 * enable window for display
90 	 */
91 	unsigned char window_enable;
92 	/* number of open instances of the layer */
93 	unsigned int usrs;
94 	/* Indicates id of the field which is being displayed */
95 	unsigned int field_id;
96 	/* Identifies device object */
97 	enum vpbe_display_device_id device_id;
98 	/* facilitation of ioctl ops lock by v4l2*/
99 	struct mutex opslock;
100 	u8 layer_first_int;
101 };
102 
103 /* vpbe device structure */
104 struct vpbe_display {
105 	/* layer specific parameters */
106 	/* lock for isr updates to buf layers*/
107 	spinlock_t dma_queue_lock;
108 	/* C-Plane offset from start of y-plane */
109 	unsigned int cbcr_ofst;
110 	struct vpbe_layer *dev[VPBE_DISPLAY_MAX_DEVICES];
111 	struct vpbe_device *vpbe_dev;
112 	struct osd_state *osd_device;
113 };
114 
115 struct buf_config_params {
116 	unsigned char min_numbuffers;
117 	unsigned char numbuffers[VPBE_DISPLAY_MAX_DEVICES];
118 	unsigned int min_bufsize[VPBE_DISPLAY_MAX_DEVICES];
119 	unsigned int layer_bufsize[VPBE_DISPLAY_MAX_DEVICES];
120 };
121 
122 #endif	/* VPBE_DISPLAY_H */
123