LXR linux/drivers/media/platform/sunxi/sun4i-csi/sun4i

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * Copyright (C) 2016 NextThing Co
   4 * Copyright (C) 2016-2019 Bootlin
   5 *
   6 * Author: Maxime Ripard <maxime.ripard@bootlin.com>
   7 */
   8
   9#ifndef _SUN4I_CSI_H_
  10#define _SUN4I_CSI_H_
  11
  12#include <media/media-device.h>
  13#include <media/v4l2-async.h>
  14#include <media/v4l2-dev.h>
  15#include <media/v4l2-device.h>
  16#include <media/v4l2-fwnode.h>
  17#include <media/videobuf2-core.h>
  18
  19#define CSI_EN_REG                      0x00
  20
  21#define CSI_CFG_REG                     0x04
  22#define CSI_CFG_INPUT_FMT(fmt)                  ((fmt) << 20)
  23#define CSI_CFG_OUTPUT_FMT(fmt)                 ((fmt) << 16)
  24#define CSI_CFG_YUV_DATA_SEQ(seq)               ((seq) << 8)
  25#define CSI_CFG_VREF_POL(pol)                   ((pol) << 2)
  26#define CSI_CFG_HREF_POL(pol)                   ((pol) << 1)
  27#define CSI_CFG_PCLK_POL(pol)                   ((pol) << 0)
  28
  29#define CSI_CPT_CTRL_REG                0x08
  30#define CSI_CPT_CTRL_VIDEO_START                BIT(1)
  31#define CSI_CPT_CTRL_IMAGE_START                BIT(0)
  32
  33#define CSI_BUF_ADDR_REG(fifo, buf)     (0x10 + (0x8 * (fifo)) + (0x4 * (buf)))
  34
  35#define CSI_BUF_CTRL_REG                0x28
  36#define CSI_BUF_CTRL_DBN                        BIT(2)
  37#define CSI_BUF_CTRL_DBS                        BIT(1)
  38#define CSI_BUF_CTRL_DBE                        BIT(0)
  39
  40#define CSI_INT_EN_REG                  0x30
  41#define CSI_INT_FRM_DONE                        BIT(1)
  42#define CSI_INT_CPT_DONE                        BIT(0)
  43
  44#define CSI_INT_STA_REG                 0x34
  45
  46#define CSI_WIN_CTRL_W_REG              0x40
  47#define CSI_WIN_CTRL_W_ACTIVE(w)                ((w) << 16)
  48
  49#define CSI_WIN_CTRL_H_REG              0x44
  50#define CSI_WIN_CTRL_H_ACTIVE(h)                ((h) << 16)
  51
  52#define CSI_BUF_LEN_REG                 0x48
  53
  54#define CSI_MAX_BUFFER          2
  55#define CSI_MAX_HEIGHT          8192U
  56#define CSI_MAX_WIDTH           8192U
  57
  58enum csi_input {
  59        CSI_INPUT_RAW   = 0,
  60        CSI_INPUT_BT656 = 2,
  61        CSI_INPUT_YUV   = 3,
  62};
  63
  64enum csi_output_raw {
  65        CSI_OUTPUT_RAW_PASSTHROUGH = 0,
  66};
  67
  68enum csi_output_yuv {
  69        CSI_OUTPUT_YUV_422_PLANAR       = 0,
  70        CSI_OUTPUT_YUV_420_PLANAR       = 1,
  71        CSI_OUTPUT_YUV_422_UV           = 4,
  72        CSI_OUTPUT_YUV_420_UV           = 5,
  73        CSI_OUTPUT_YUV_422_MACRO        = 8,
  74        CSI_OUTPUT_YUV_420_MACRO        = 9,
  75};
  76
  77enum csi_yuv_data_seq {
  78        CSI_YUV_DATA_SEQ_YUYV   = 0,
  79        CSI_YUV_DATA_SEQ_YVYU   = 1,
  80        CSI_YUV_DATA_SEQ_UYVY   = 2,
  81        CSI_YUV_DATA_SEQ_VYUY   = 3,
  82};
  83
  84enum csi_subdev_pads {
  85        CSI_SUBDEV_SINK,
  86        CSI_SUBDEV_SOURCE,
  87
  88        CSI_SUBDEV_PADS,
  89};
  90
  91extern const struct v4l2_subdev_ops sun4i_csi_subdev_ops;
  92
  93struct sun4i_csi_format {
  94        u32                     mbus;
  95        u32                     fourcc;
  96        enum csi_input          input;
  97        u32                     output;
  98        unsigned int            num_planes;
  99        u8                      bpp[3];
 100        unsigned int            hsub;
 101        unsigned int            vsub;
 102};
 103
 104const struct sun4i_csi_format *sun4i_csi_find_format(const u32 *fourcc,
 105                                                     const u32 *mbus);
 106
 107struct sun4i_csi {
 108        /* Device resources */
 109        struct device                   *dev;
 110
 111        const struct sun4i_csi_traits   *traits;
 112
 113        void __iomem                    *regs;
 114        struct clk                      *bus_clk;
 115        struct clk                      *isp_clk;
 116        struct clk                      *ram_clk;
 117        struct reset_control            *rst;
 118
 119        struct vb2_v4l2_buffer          *current_buf[CSI_MAX_BUFFER];
 120
 121        struct {
 122                size_t                  size;
 123                void                    *vaddr;
 124                dma_addr_t              paddr;
 125        } scratch;
 126
 127        struct v4l2_fwnode_bus_parallel bus;
 128
 129        /* Main Device */
 130        struct v4l2_device              v4l;
 131        struct media_device             mdev;
 132        struct video_device             vdev;
 133        struct media_pad                vdev_pad;
 134        struct v4l2_pix_format_mplane   fmt;
 135
 136        /* Local subdev */
 137        struct v4l2_subdev              subdev;
 138        struct media_pad                subdev_pads[CSI_SUBDEV_PADS];
 139        struct v4l2_mbus_framefmt       subdev_fmt;
 140
 141        /* V4L2 Async variables */
 142        struct v4l2_async_notifier      notifier;
 143        struct v4l2_subdev              *src_subdev;
 144        int                             src_pad;
 145
 146        /* V4L2 variables */
 147        struct mutex                    lock;
 148
 149        /* Videobuf2 */
 150        struct vb2_queue                queue;
 151        struct list_head                buf_list;
 152        spinlock_t                      qlock;
 153        unsigned int                    sequence;
 154};
 155
 156int sun4i_csi_dma_register(struct sun4i_csi *csi, int irq);
 157void sun4i_csi_dma_unregister(struct sun4i_csi *csi);
 158
 159int sun4i_csi_v4l2_register(struct sun4i_csi *csi);
 160
 161#endif /* _SUN4I_CSI_H_ */
 162