drivers/media/platform/rockchip/rga/rga.h

   1 /*
   2  * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
   3  * Author: Jacob Chen <jacob-chen@iotwrt.com>
   4  *
   5  * This software is licensed under the terms of the GNU General Public
   6  * License version 2, as published by the Free Software Foundation, and
   7  * may be copied, distributed, and modified under those terms.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14 #ifndef __RGA_H__
  15 #define __RGA_H__
  16
  17 #include <linux/platform_device.h>
  18 #include <media/videobuf2-v4l2.h>
  19 #include <media/v4l2-ctrls.h>
  20 #include <media/v4l2-device.h>
  21
  22 #define RGA_NAME "rockchip-rga"
  23
  24 struct rga_fmt {
  25         u32 fourcc;
  26         int depth;
  27         u8 uv_factor;
  28         u8 y_div;
  29         u8 x_div;
  30         u8 color_swap;
  31         u8 hw_format;
  32 };
  33
  34 struct rga_frame {
  35         /* Original dimensions */
  36         u32 width;
  37         u32 height;
  38         u32 colorspace;
  39
  40         /* Crop */
  41         struct v4l2_rect crop;
  42
  43         /* Image format */
  44         struct rga_fmt *fmt;
  45
  46         /* Variables that can calculated once and reused */
  47         u32 stride;
  48         u32 size;
  49 };
  50
  51 struct rockchip_rga_version {
  52         u32 major;
  53         u32 minor;
  54 };
  55
  56 struct rga_ctx {
  57         struct v4l2_fh fh;
  58         struct rockchip_rga *rga;
  59         struct rga_frame in;
  60         struct rga_frame out;
  61         struct v4l2_ctrl_handler ctrl_handler;
  62
  63         /* Control values */
  64         u32 op;
  65         u32 hflip;
  66         u32 vflip;
  67         u32 rotate;
  68         u32 fill_color;
  69 };
  70
  71 struct rockchip_rga {
  72         struct v4l2_device v4l2_dev;
  73         struct v4l2_m2m_dev *m2m_dev;
  74         struct video_device *vfd;
  75
  76         struct device *dev;
  77         struct regmap *grf;
  78         void __iomem *regs;
  79         struct clk *sclk;
  80         struct clk *aclk;
  81         struct clk *hclk;
  82         struct rockchip_rga_version version;
  83
  84         /* vfd lock */
  85         struct mutex mutex;
  86         /* ctrl parm lock */
  87         spinlock_t ctrl_lock;
  88
  89         struct rga_ctx *curr;
  90         dma_addr_t cmdbuf_phy;
  91         void *cmdbuf_virt;
  92         unsigned int *src_mmu_pages;
  93         unsigned int *dst_mmu_pages;
  94 };
  95
  96 struct rga_frame *rga_get_frame(struct rga_ctx *ctx, enum v4l2_buf_type type);
  97
  98 /* RGA Buffers Manage */
  99 extern const struct vb2_ops rga_qops;
 100 void rga_buf_map(struct vb2_buffer *vb);
 101
 102 /* RGA Hardware */
 103 static inline void rga_write(struct rockchip_rga *rga, u32 reg, u32 value)
 104 {
 105         writel(value, rga->regs + reg);
 106 };
 107
 108 static inline u32 rga_read(struct rockchip_rga *rga, u32 reg)
 109 {
 110         return readl(rga->regs + reg);
 111 };
 112
 113 static inline void rga_mod(struct rockchip_rga *rga, u32 reg, u32 val, u32 mask)
 114 {
 115         u32 temp = rga_read(rga, reg) & ~(mask);
 116
 117         temp |= val & mask;
 118         rga_write(rga, reg, temp);
 119 };
 120
 121 void rga_hw_start(struct rockchip_rga *rga);
 122
 123 #endif