/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2016 NextThing Co
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* Copyright (C) 2016-2019 Bootlin
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*
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* Author: Maxime Ripard <maxime.ripard@bootlin.com>
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*/
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#ifndef _SUN4I_CSI_H_
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#define _SUN4I_CSI_H_
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#include <media/media-device.h>
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#include <media/v4l2-async.h>
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#include <media/v4l2-dev.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-fwnode.h>
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#include <media/videobuf2-core.h>
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#define CSI_EN_REG 0x00
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#define CSI_CFG_REG 0x04
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#define CSI_CFG_INPUT_FMT(fmt) ((fmt) << 20)
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#define CSI_CFG_OUTPUT_FMT(fmt) ((fmt) << 16)
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#define CSI_CFG_YUV_DATA_SEQ(seq) ((seq) << 8)
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#define CSI_CFG_VREF_POL(pol) ((pol) << 2)
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#define CSI_CFG_HREF_POL(pol) ((pol) << 1)
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#define CSI_CFG_PCLK_POL(pol) ((pol) << 0)
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#define CSI_CPT_CTRL_REG 0x08
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#define CSI_CPT_CTRL_VIDEO_START BIT(1)
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#define CSI_CPT_CTRL_IMAGE_START BIT(0)
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#define CSI_BUF_ADDR_REG(fifo, buf) (0x10 + (0x8 * (fifo)) + (0x4 * (buf)))
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#define CSI_BUF_CTRL_REG 0x28
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#define CSI_BUF_CTRL_DBN BIT(2)
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#define CSI_BUF_CTRL_DBS BIT(1)
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#define CSI_BUF_CTRL_DBE BIT(0)
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#define CSI_INT_EN_REG 0x30
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#define CSI_INT_FRM_DONE BIT(1)
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#define CSI_INT_CPT_DONE BIT(0)
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#define CSI_INT_STA_REG 0x34
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#define CSI_WIN_CTRL_W_REG 0x40
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#define CSI_WIN_CTRL_W_ACTIVE(w) ((w) << 16)
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#define CSI_WIN_CTRL_H_REG 0x44
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#define CSI_WIN_CTRL_H_ACTIVE(h) ((h) << 16)
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#define CSI_BUF_LEN_REG 0x48
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#define CSI_MAX_BUFFER 2
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#define CSI_MAX_HEIGHT 8192U
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#define CSI_MAX_WIDTH 8192U
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enum csi_input {
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CSI_INPUT_RAW = 0,
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CSI_INPUT_BT656 = 2,
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CSI_INPUT_YUV = 3,
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};
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enum csi_output_raw {
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CSI_OUTPUT_RAW_PASSTHROUGH = 0,
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};
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enum csi_output_yuv {
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CSI_OUTPUT_YUV_422_PLANAR = 0,
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CSI_OUTPUT_YUV_420_PLANAR = 1,
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CSI_OUTPUT_YUV_422_UV = 4,
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CSI_OUTPUT_YUV_420_UV = 5,
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CSI_OUTPUT_YUV_422_MACRO = 8,
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CSI_OUTPUT_YUV_420_MACRO = 9,
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};
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enum csi_yuv_data_seq {
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CSI_YUV_DATA_SEQ_YUYV = 0,
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CSI_YUV_DATA_SEQ_YVYU = 1,
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CSI_YUV_DATA_SEQ_UYVY = 2,
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CSI_YUV_DATA_SEQ_VYUY = 3,
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};
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enum csi_subdev_pads {
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CSI_SUBDEV_SINK,
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CSI_SUBDEV_SOURCE,
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CSI_SUBDEV_PADS,
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};
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extern const struct v4l2_subdev_ops sun4i_csi_subdev_ops;
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struct sun4i_csi_format {
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u32 mbus;
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u32 fourcc;
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enum csi_input input;
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u32 output;
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unsigned int num_planes;
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u8 bpp[3];
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unsigned int hsub;
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unsigned int vsub;
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};
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const struct sun4i_csi_format *sun4i_csi_find_format(const u32 *fourcc,
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const u32 *mbus);
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struct sun4i_csi {
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/* Device resources */
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struct device *dev;
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const struct sun4i_csi_traits *traits;
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void __iomem *regs;
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struct clk *bus_clk;
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struct clk *isp_clk;
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struct clk *ram_clk;
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struct reset_control *rst;
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struct vb2_v4l2_buffer *current_buf[CSI_MAX_BUFFER];
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struct {
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size_t size;
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void *vaddr;
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dma_addr_t paddr;
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} scratch;
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struct v4l2_fwnode_bus_parallel bus;
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/* Main Device */
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struct v4l2_device v4l;
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struct media_device mdev;
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struct video_device vdev;
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struct media_pad vdev_pad;
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struct v4l2_pix_format_mplane fmt;
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/* Local subdev */
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struct v4l2_subdev subdev;
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struct media_pad subdev_pads[CSI_SUBDEV_PADS];
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struct v4l2_mbus_framefmt subdev_fmt;
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/* V4L2 Async variables */
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struct v4l2_async_notifier notifier;
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struct v4l2_subdev *src_subdev;
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int src_pad;
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/* V4L2 variables */
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struct mutex lock;
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/* Videobuf2 */
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struct vb2_queue queue;
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struct list_head buf_list;
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spinlock_t qlock;
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unsigned int sequence;
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};
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int sun4i_csi_dma_register(struct sun4i_csi *csi, int irq);
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void sun4i_csi_dma_unregister(struct sun4i_csi *csi);
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int sun4i_csi_v4l2_register(struct sun4i_csi *csi);
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#endif /* _SUN4I_CSI_H_ */
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