1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3 * vsp1.h -- R-Car VSP1 API
4 *
5 * Copyright (C) 2015 Renesas Electronics Corporation
6 *
7 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
8 */
9 #ifndef __MEDIA_VSP1_H__
10 #define __MEDIA_VSP1_H__
11
12 #include <linux/scatterlist.h>
13 #include <linux/types.h>
14 #include <linux/videodev2.h>
15
16 struct device;
17
18 int vsp1_du_init(struct device *dev);
19
20 #define VSP1_DU_STATUS_COMPLETE BIT(0)
21 #define VSP1_DU_STATUS_WRITEBACK BIT(1)
22
23 /**
24 * struct vsp1_du_lif_config - VSP LIF configuration
25 * @width: output frame width
26 * @height: output frame height
27 * @interlaced: true for interlaced pipelines
28 * @callback: frame completion callback function (optional). When a callback
29 * is provided, the VSP driver guarantees that it will be called once
30 * and only once for each vsp1_du_atomic_flush() call.
31 * @callback_data: data to be passed to the frame completion callback
32 */
33 struct vsp1_du_lif_config {
34 unsigned int width;
35 unsigned int height;
36 bool interlaced;
37
38 void (*callback)(void *data, unsigned int status, u32 crc);
39 void *callback_data;
40 };
41
42 int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index,
43 const struct vsp1_du_lif_config *cfg);
44
45 /**
46 * struct vsp1_du_atomic_config - VSP atomic configuration parameters
47 * @pixelformat: plane pixel format (V4L2 4CC)
48 * @pitch: line pitch in bytes for the first plane
49 * @mem: DMA memory address for each plane of the frame buffer
50 * @src: source rectangle in the frame buffer (integer coordinates)
51 * @dst: destination rectangle on the display (integer coordinates)
52 * @alpha: alpha value (0: fully transparent, 255: fully opaque)
53 * @zpos: Z position of the plane (from 0 to number of planes minus 1)
54 * @premult: true for premultiplied alpha
55 */
56 struct vsp1_du_atomic_config {
57 u32 pixelformat;
58 unsigned int pitch;
59 dma_addr_t mem[3];
60 struct v4l2_rect src;
61 struct v4l2_rect dst;
62 unsigned int alpha;
63 unsigned int zpos;
64 bool premult;
65 };
66
67 /**
68 * enum vsp1_du_crc_source - Source used for CRC calculation
69 * @VSP1_DU_CRC_NONE: CRC calculation disabled
70 * @VSP1_DU_CRC_PLANE: Perform CRC calculation on an input plane
71 * @VSP1_DU_CRC_OUTPUT: Perform CRC calculation on the composed output
72 */
73 enum vsp1_du_crc_source {
74 VSP1_DU_CRC_NONE,
75 VSP1_DU_CRC_PLANE,
76 VSP1_DU_CRC_OUTPUT,
77 };
78
79 /**
80 * struct vsp1_du_crc_config - VSP CRC computation configuration parameters
81 * @source: source for CRC calculation
82 * @index: index of the CRC source plane (when source is set to plane)
83 */
84 struct vsp1_du_crc_config {
85 enum vsp1_du_crc_source source;
86 unsigned int index;
87 };
88
89 /**
90 * struct vsp1_du_writeback_config - VSP writeback configuration parameters
91 * @pixelformat: plane pixel format (V4L2 4CC)
92 * @pitch: line pitch in bytes for the first plane
93 * @mem: DMA memory address for each plane of the frame buffer
94 */
95 struct vsp1_du_writeback_config {
96 u32 pixelformat;
97 unsigned int pitch;
98 dma_addr_t mem[3];
99 };
100
101 /**
102 * struct vsp1_du_atomic_pipe_config - VSP atomic pipe configuration parameters
103 * @crc: CRC computation configuration
104 * @writeback: writeback configuration
105 */
106 struct vsp1_du_atomic_pipe_config {
107 struct vsp1_du_crc_config crc;
108 struct vsp1_du_writeback_config writeback;
109 };
110
111 void vsp1_du_atomic_begin(struct device *dev, unsigned int pipe_index);
112 int vsp1_du_atomic_update(struct device *dev, unsigned int pipe_index,
113 unsigned int rpf,
114 const struct vsp1_du_atomic_config *cfg);
115 void vsp1_du_atomic_flush(struct device *dev, unsigned int pipe_index,
116 const struct vsp1_du_atomic_pipe_config *cfg);
117 int vsp1_du_map_sg(struct device *dev, struct sg_table *sgt);
118 void vsp1_du_unmap_sg(struct device *dev, struct sg_table *sgt);
119
120 #endif /* __MEDIA_VSP1_H__ */
121
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