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; 92extern const struct v4l2_subdev_internal_ops sun4i_csi_subdev_internal_ops; 93 94struct sun4i_csi_format { 95 u32 mbus; 96 u32 fourcc; 97 enum csi_input input; 98 u32 output; 99 unsigned int num_planes; 100 u8 bpp[3]; 101 unsigned int hsub; 102 unsigned int vsub; 103}; 104 105const struct sun4i_csi_format *sun4i_csi_find_format(const u32 *fourcc, 106 const u32 *mbus); 107 108struct sun4i_csi { 109 /* Device resources */ 110 struct device *dev; 111 112 const struct sun4i_csi_traits *traits; 113 114 void __iomem *regs; 115 struct clk *bus_clk; 116 struct clk *isp_clk; 117 struct clk *ram_clk; 118 struct reset_control *rst; 119 120 struct vb2_v4l2_buffer *current_buf[CSI_MAX_BUFFER]; 121 122 struct { 123 size_t size; 124 void *vaddr; 125 dma_addr_t paddr; 126 } scratch; 127 128 struct v4l2_mbus_config_parallel bus; 129 130 /* Main Device */ 131 struct v4l2_device v4l; 132 struct media_device mdev; 133 struct video_device vdev; 134 struct media_pad vdev_pad; 135 struct v4l2_pix_format_mplane fmt; 136 137 /* Local subdev */ 138 struct v4l2_subdev subdev; 139 struct media_pad subdev_pads[CSI_SUBDEV_PADS]; 140 struct v4l2_mbus_framefmt subdev_fmt; 141 142 /* V4L2 Async variables */ 143 struct v4l2_async_notifier notifier; 144 struct v4l2_subdev *src_subdev; 145 int src_pad; 146 147 /* V4L2 variables */ 148 struct mutex lock; 149 150 /* Videobuf2 */ 151 struct vb2_queue queue; 152 struct list_head buf_list; 153 spinlock_t qlock; 154 unsigned int sequence; 155}; 156 157int sun4i_csi_dma_register(struct sun4i_csi *csi, int irq); 158void sun4i_csi_dma_unregister(struct sun4i_csi *csi); 159 160int sun4i_csi_v4l2_register(struct sun4i_csi *csi); 161 162#endif /* _SUN4I_CSI_H_ */ 163