1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
4 * Author: Jacob Chen <jacob-chen@iotwrt.com>
5 */
6 #ifndef __RGA_H__
7 #define __RGA_H__
8
9 #include <linux/platform_device.h>
10 #include <media/videobuf2-v4l2.h>
11 #include <media/v4l2-ctrls.h>
12 #include <media/v4l2-device.h>
13
14 #define RGA_NAME "rockchip-rga"
15
16 struct rga_fmt {
17 u32 fourcc;
18 int depth;
19 u8 uv_factor;
20 u8 y_div;
21 u8 x_div;
22 u8 color_swap;
23 u8 hw_format;
24 };
25
26 struct rga_frame {
27 /* Original dimensions */
28 u32 width;
29 u32 height;
30 u32 colorspace;
31
32 /* Crop */
33 struct v4l2_rect crop;
34
35 /* Image format */
36 struct rga_fmt *fmt;
37 struct v4l2_pix_format_mplane pix;
38
39 /* Variables that can calculated once and reused */
40 u32 stride;
41 u32 size;
42 };
43
44 struct rga_dma_desc {
45 u32 addr;
46 };
47
48 struct rockchip_rga_version {
49 u32 major;
50 u32 minor;
51 };
52
53 struct rga_ctx {
54 struct v4l2_fh fh;
55 struct rockchip_rga *rga;
56 struct rga_frame in;
57 struct rga_frame out;
58 struct v4l2_ctrl_handler ctrl_handler;
59
60 /* Control values */
61 u32 op;
62 u32 hflip;
63 u32 vflip;
64 u32 rotate;
65 u32 fill_color;
66 };
67
68 struct rockchip_rga {
69 struct v4l2_device v4l2_dev;
70 struct v4l2_m2m_dev *m2m_dev;
71 struct video_device *vfd;
72
73 struct device *dev;
74 struct regmap *grf;
75 void __iomem *regs;
76 struct clk *sclk;
77 struct clk *aclk;
78 struct clk *hclk;
79 struct rockchip_rga_version version;
80
81 /* vfd lock */
82 struct mutex mutex;
83 /* ctrl parm lock */
84 spinlock_t ctrl_lock;
85
86 struct rga_ctx *curr;
87 dma_addr_t cmdbuf_phy;
88 void *cmdbuf_virt;
89 };
90
91 struct rga_addr_offset {
92 unsigned int y_off;
93 unsigned int u_off;
94 unsigned int v_off;
95 };
96
97 struct rga_vb_buffer {
98 struct vb2_v4l2_buffer vb_buf;
99 struct list_head queue;
100
101 /* RGA MMU mapping for this buffer */
102 struct rga_dma_desc *dma_desc;
103 dma_addr_t dma_desc_pa;
104 size_t n_desc;
105
106 /* Plane offsets of this buffer into the mapping */
107 struct rga_addr_offset offset;
108 };
109
vb_to_rga(struct vb2_v4l2_buffer * vb)110 static inline struct rga_vb_buffer *vb_to_rga(struct vb2_v4l2_buffer *vb)
111 {
112 return container_of(vb, struct rga_vb_buffer, vb_buf);
113 }
114
115 struct rga_frame *rga_get_frame(struct rga_ctx *ctx, enum v4l2_buf_type type);
116
117 /* RGA Buffers Manage */
118 extern const struct vb2_ops rga_qops;
119
120 /* RGA Hardware */
rga_write(struct rockchip_rga * rga,u32 reg,u32 value)121 static inline void rga_write(struct rockchip_rga *rga, u32 reg, u32 value)
122 {
123 writel(value, rga->regs + reg);
124 };
125
rga_read(struct rockchip_rga * rga,u32 reg)126 static inline u32 rga_read(struct rockchip_rga *rga, u32 reg)
127 {
128 return readl(rga->regs + reg);
129 };
130
rga_mod(struct rockchip_rga * rga,u32 reg,u32 val,u32 mask)131 static inline void rga_mod(struct rockchip_rga *rga, u32 reg, u32 val, u32 mask)
132 {
133 u32 temp = rga_read(rga, reg) & ~(mask);
134
135 temp |= val & mask;
136 rga_write(rga, reg, temp);
137 };
138
139 void rga_hw_start(struct rockchip_rga *rga,
140 struct rga_vb_buffer *src, struct rga_vb_buffer *dst);
141
142 #endif
143