// SPDX-License-Identifier: GPL-2.0+ /* * DW100 Hardware dewarper * * Copyright 2022 NXP * Author: Xavier Roumegue (xavier.roumegue@oss.nxp.com) * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "dw100_regs.h" #define DRV_NAME "dw100" #define DW100_MIN_W 176u #define DW100_MIN_H 144u #define DW100_MAX_W 4096u #define DW100_MAX_H 3072u #define DW100_ALIGN_W 3 #define DW100_ALIGN_H 3 #define DW100_BLOCK_SIZE 16 #define DW100_DEF_W 640u #define DW100_DEF_H 480u #define DW100_DEF_LUT_W (DIV_ROUND_UP(DW100_DEF_W, DW100_BLOCK_SIZE) + 1) #define DW100_DEF_LUT_H (DIV_ROUND_UP(DW100_DEF_H, DW100_BLOCK_SIZE) + 1) /* * 16 controls have been reserved for this driver for future extension, but * let's limit the related driver allocation to the effective number of controls * in use. */ #define DW100_MAX_CTRLS 1 #define DW100_CTRL_DEWARPING_MAP 0 enum { DW100_QUEUE_SRC = 0, DW100_QUEUE_DST = 1, }; enum { DW100_FMT_CAPTURE = BIT(0), DW100_FMT_OUTPUT = BIT(1), }; struct dw100_device { struct platform_device *pdev; struct v4l2_m2m_dev *m2m_dev; struct v4l2_device v4l2_dev; struct video_device vfd; struct media_device mdev; /* Video device lock */ struct mutex vfd_mutex; void __iomem *mmio; struct clk_bulk_data *clks; int num_clks; struct dentry *debugfs_root; }; struct dw100_q_data { struct v4l2_pix_format_mplane pix_fmt; unsigned int sequence; const struct dw100_fmt *fmt; struct v4l2_rect crop; }; struct dw100_ctx { struct v4l2_fh fh; struct dw100_device *dw_dev; struct v4l2_ctrl_handler hdl; struct v4l2_ctrl *ctrls[DW100_MAX_CTRLS]; /* per context m2m queue lock */ struct mutex vq_mutex; /* Look Up Table for pixel remapping */ unsigned int *map; dma_addr_t map_dma; size_t map_size; unsigned int map_width; unsigned int map_height; bool user_map_is_set; /* Source and destination queue data */ struct dw100_q_data q_data[2]; }; static const struct v4l2_frmsize_stepwise dw100_frmsize_stepwise = { .min_width = DW100_MIN_W, .min_height = DW100_MIN_H, .max_width = DW100_MAX_W, .max_height = DW100_MAX_H, .step_width = 1UL << DW100_ALIGN_W, .step_height = 1UL << DW100_ALIGN_H, }; static const struct dw100_fmt { u32 fourcc; u32 types; u32 reg_format; bool reg_swap_uv; } formats[] = { { .fourcc = V4L2_PIX_FMT_NV16, .types = DW100_FMT_OUTPUT | DW100_FMT_CAPTURE, .reg_format = DW100_DEWARP_CTRL_FORMAT_YUV422_SP, .reg_swap_uv = false, }, { .fourcc = V4L2_PIX_FMT_NV16M, .types = DW100_FMT_OUTPUT | DW100_FMT_CAPTURE, .reg_format = DW100_DEWARP_CTRL_FORMAT_YUV422_SP, .reg_swap_uv = false, }, { .fourcc = V4L2_PIX_FMT_NV61, .types = DW100_FMT_CAPTURE, .reg_format = DW100_DEWARP_CTRL_FORMAT_YUV422_SP, .reg_swap_uv = true, }, { .fourcc = V4L2_PIX_FMT_NV61M, .types = DW100_FMT_CAPTURE, .reg_format = DW100_DEWARP_CTRL_FORMAT_YUV422_SP, .reg_swap_uv = true, }, { .fourcc = V4L2_PIX_FMT_YUYV, .types = DW100_FMT_OUTPUT | DW100_FMT_CAPTURE, .reg_format = DW100_DEWARP_CTRL_FORMAT_YUV422_PACKED, .reg_swap_uv = false, }, { .fourcc = V4L2_PIX_FMT_UYVY, .types = DW100_FMT_OUTPUT | DW100_FMT_CAPTURE, .reg_format = DW100_DEWARP_CTRL_FORMAT_YUV422_PACKED, .reg_swap_uv = true, }, { .fourcc = V4L2_PIX_FMT_NV12, .types = DW100_FMT_OUTPUT | DW100_FMT_CAPTURE, .reg_format = DW100_DEWARP_CTRL_FORMAT_YUV420_SP, .reg_swap_uv = false, }, { .fourcc = V4L2_PIX_FMT_NV12M, .types = DW100_FMT_OUTPUT | DW100_FMT_CAPTURE, .reg_format = DW100_DEWARP_CTRL_FORMAT_YUV420_SP, .reg_swap_uv = false, }, { .fourcc = V4L2_PIX_FMT_NV21, .types = DW100_FMT_CAPTURE, .reg_format = DW100_DEWARP_CTRL_FORMAT_YUV420_SP, .reg_swap_uv = true, }, { .fourcc = V4L2_PIX_FMT_NV21M, .types = DW100_FMT_CAPTURE, .reg_format = DW100_DEWARP_CTRL_FORMAT_YUV420_SP, .reg_swap_uv = true, }, }; static inline int to_dw100_fmt_type(enum v4l2_buf_type type) { if (V4L2_TYPE_IS_OUTPUT(type)) return DW100_FMT_OUTPUT; else return DW100_FMT_CAPTURE; } static const struct dw100_fmt *dw100_find_pixel_format(u32 pixel_format, int fmt_type) { unsigned int i; for (i = 0; i < ARRAY_SIZE(formats); i++) { const struct dw100_fmt *fmt = &formats[i]; if (fmt->fourcc == pixel_format && fmt->types & fmt_type) return fmt; } return NULL; } static const struct dw100_fmt *dw100_find_format(struct v4l2_format *f) { return dw100_find_pixel_format(f->fmt.pix_mp.pixelformat, to_dw100_fmt_type(f->type)); } static inline u32 dw100_read(struct dw100_device *dw_dev, u32 reg) { return readl(dw_dev->mmio + reg); } static inline void dw100_write(struct dw100_device *dw_dev, u32 reg, u32 val) { writel(val, dw_dev->mmio + reg); } static inline int dw100_dump_regs(struct seq_file *m) { struct dw100_device *dw_dev = m->private; #define __DECLARE_REG(x) { #x, x } unsigned int i; static const struct reg_desc { const char * const name; unsigned int addr; } dw100_regs[] = { __DECLARE_REG(DW100_DEWARP_ID), __DECLARE_REG(DW100_DEWARP_CTRL), __DECLARE_REG(DW100_MAP_LUT_ADDR), __DECLARE_REG(DW100_MAP_LUT_SIZE), __DECLARE_REG(DW100_MAP_LUT_ADDR2), __DECLARE_REG(DW100_MAP_LUT_SIZE2), __DECLARE_REG(DW100_SRC_IMG_Y_BASE), __DECLARE_REG(DW100_SRC_IMG_UV_BASE), __DECLARE_REG(DW100_SRC_IMG_SIZE), __DECLARE_REG(DW100_SRC_IMG_STRIDE), __DECLARE_REG(DW100_DST_IMG_Y_BASE), __DECLARE_REG(DW100_DST_IMG_UV_BASE), __DECLARE_REG(DW100_DST_IMG_SIZE), __DECLARE_REG(DW100_DST_IMG_STRIDE), __DECLARE_REG(DW100_DST_IMG_Y_SIZE1), __DECLARE_REG(DW100_DST_IMG_UV_SIZE1), __DECLARE_REG(DW100_SRC_IMG_Y_BASE2), __DECLARE_REG(DW100_SRC_IMG_UV_BASE2), __DECLARE_REG(DW100_SRC_IMG_SIZE2), __DECLARE_REG(DW100_SRC_IMG_STRIDE2), __DECLARE_REG(DW100_DST_IMG_Y_BASE2), __DECLARE_REG(DW100_DST_IMG_UV_BASE2), __DECLARE_REG(DW100_DST_IMG_SIZE2), __DECLARE_REG(DW100_DST_IMG_STRIDE2), __DECLARE_REG(DW100_DST_IMG_Y_SIZE2), __DECLARE_REG(DW100_DST_IMG_UV_SIZE2), __DECLARE_REG(DW100_SWAP_CONTROL), __DECLARE_REG(DW100_VERTICAL_SPLIT_LINE), __DECLARE_REG(DW100_HORIZON_SPLIT_LINE), __DECLARE_REG(DW100_SCALE_FACTOR), __DECLARE_REG(DW100_ROI_START), __DECLARE_REG(DW100_BOUNDARY_PIXEL), __DECLARE_REG(DW100_INTERRUPT_STATUS), __DECLARE_REG(DW100_BUS_CTRL), __DECLARE_REG(DW100_BUS_CTRL1), __DECLARE_REG(DW100_BUS_TIME_OUT_CYCLE), }; for (i = 0; i < ARRAY_SIZE(dw100_regs); i++) seq_printf(m, "%s: %#x\n", dw100_regs[i].name, dw100_read(dw_dev, dw100_regs[i].addr)); return 0; } static inline struct dw100_ctx *dw100_file2ctx(struct file *file) { return container_of(file->private_data, struct dw100_ctx, fh); } static struct dw100_q_data *dw100_get_q_data(struct dw100_ctx *ctx, enum v4l2_buf_type type) { if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) return &ctx->q_data[DW100_QUEUE_SRC]; else return &ctx->q_data[DW100_QUEUE_DST]; } static u32 dw100_get_n_vertices_from_length(u32 length) { return DIV_ROUND_UP(length, DW100_BLOCK_SIZE) + 1; } static u16 dw100_map_convert_to_uq12_4(u32 a) { return (u16)((a & 0xfff) << 4); } static u32 dw100_map_format_coordinates(u16 xq, u16 yq) { return (u32)((yq << 16) | xq); } static u32 *dw100_get_user_map(struct dw100_ctx *ctx) { struct v4l2_ctrl *ctrl = ctx->ctrls[DW100_CTRL_DEWARPING_MAP]; return ctrl->p_cur.p_u32; } /* * Create the dewarp map used by the hardware from the V4L2 control values which * have been initialized with an identity map or set by the application. */ static int dw100_create_mapping(struct dw100_ctx *ctx) { u32 *user_map; if (ctx->map) dma_free_coherent(&ctx->dw_dev->pdev->dev, ctx->map_size, ctx->map, ctx->map_dma); ctx->map = dma_alloc_coherent(&ctx->dw_dev->pdev->dev, ctx->map_size, &ctx->map_dma, GFP_KERNEL); if (!ctx->map) return -ENOMEM; user_map = dw100_get_user_map(ctx); memcpy(ctx->map, user_map, ctx->map_size); dev_dbg(&ctx->dw_dev->pdev->dev, "%ux%u %s mapping created (d:%pad-c:%p) for stream %ux%u->%ux%u\n", ctx->map_width, ctx->map_height, ctx->user_map_is_set ? "user" : "identity", &ctx->map_dma, ctx->map, ctx->q_data[DW100_QUEUE_SRC].pix_fmt.width, ctx->q_data[DW100_QUEUE_DST].pix_fmt.height, ctx->q_data[DW100_QUEUE_SRC].pix_fmt.width, ctx->q_data[DW100_QUEUE_DST].pix_fmt.height); return 0; } static void dw100_destroy_mapping(struct dw100_ctx *ctx) { if (ctx->map) { dma_free_coherent(&ctx->dw_dev->pdev->dev, ctx->map_size, ctx->map, ctx->map_dma); ctx->map = NULL; } } static int dw100_s_ctrl(struct v4l2_ctrl *ctrl) { struct dw100_ctx *ctx = container_of(ctrl->handler, struct dw100_ctx, hdl); switch (ctrl->id) { case V4L2_CID_DW100_DEWARPING_16x16_VERTEX_MAP: ctx->user_map_is_set = true; break; } return 0; } static const struct v4l2_ctrl_ops dw100_ctrl_ops = { .s_ctrl = dw100_s_ctrl, }; /* * Initialize the dewarping map with an identity mapping. * * A 16 pixels cell size grid is mapped on the destination image. * The last cells width/height might be lesser than 16 if the destination image * width/height is not divisible by 16. This dewarping grid map specifies the * source image pixel location (x, y) on each grid intersection point. * Bilinear interpolation is used to compute inner cell points locations. * * The coordinates are saved in UQ12.4 fixed point format. */ static void dw100_ctrl_dewarping_map_init(const struct v4l2_ctrl *ctrl, u32 from_idx, union v4l2_ctrl_ptr ptr) { struct dw100_ctx *ctx = container_of(ctrl->handler, struct dw100_ctx, hdl); u32 sw, sh, mw, mh, idx; u16 qx, qy, qdx, qdy, qsh, qsw; u32 *map = ctrl->p_cur.p_u32; sw = ctx->q_data[DW100_QUEUE_SRC].pix_fmt.width; sh = ctx->q_data[DW100_QUEUE_SRC].pix_fmt.height; mw = ctrl->dims[0]; mh = ctrl->dims[1]; qsw = dw100_map_convert_to_uq12_4(sw); qsh = dw100_map_convert_to_uq12_4(sh); qdx = qsw / (mw - 1); qdy = qsh / (mh - 1); ctx->map_width = mw; ctx->map_height = mh; ctx->map_size = mh * mw * sizeof(u32); for (idx = from_idx; idx < ctrl->elems; idx++) { qy = min_t(u32, (idx / mw) * qdy, qsh); qx = min_t(u32, (idx % mw) * qdx, qsw); map[idx] = dw100_map_format_coordinates(qx, qy); } ctx->user_map_is_set = false; } static const struct v4l2_ctrl_type_ops dw100_ctrl_type_ops = { .init = dw100_ctrl_dewarping_map_init, .validate = v4l2_ctrl_type_op_validate, .log = v4l2_ctrl_type_op_log, .equal = v4l2_ctrl_type_op_equal, }; static const struct v4l2_ctrl_config controls[] = { [DW100_CTRL_DEWARPING_MAP] = { .ops = &dw100_ctrl_ops, .type_ops = &dw100_ctrl_type_ops, .id = V4L2_CID_DW100_DEWARPING_16x16_VERTEX_MAP, .name = "Dewarping Vertex Map", .type = V4L2_CTRL_TYPE_U32, .min = 0x00000000, .max = 0xffffffff, .step = 1, .def = 0, .dims = { DW100_DEF_LUT_W, DW100_DEF_LUT_H }, }, }; static int dw100_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) { struct dw100_ctx *ctx = vb2_get_drv_priv(vq); const struct v4l2_pix_format_mplane *format; unsigned int i; format = &dw100_get_q_data(ctx, vq->type)->pix_fmt; if (*nplanes) { if (*nplanes != format->num_planes) return -EINVAL; for (i = 0; i < *nplanes; ++i) { if (sizes[i] < format->plane_fmt[i].sizeimage) return -EINVAL; } return 0; } *nplanes = format->num_planes; for (i = 0; i < format->num_planes; ++i) sizes[i] = format->plane_fmt[i].sizeimage; return 0; } static int dw100_buf_prepare(struct vb2_buffer *vb) { unsigned int i; struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct dw100_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); struct dw100_device *dw_dev = ctx->dw_dev; const struct v4l2_pix_format_mplane *pix_fmt = &dw100_get_q_data(ctx, vb->vb2_queue->type)->pix_fmt; if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) { if (vbuf->field != V4L2_FIELD_NONE) { dev_dbg(&dw_dev->pdev->dev, "%x field isn't supported\n", vbuf->field); return -EINVAL; } } for (i = 0; i < pix_fmt->num_planes; i++) { unsigned long size = pix_fmt->plane_fmt[i].sizeimage; if (vb2_plane_size(vb, i) < size) { dev_dbg(&dw_dev->pdev->dev, "User buffer too small (%lu < %lu)\n", vb2_plane_size(vb, i), size); return -EINVAL; } vb2_set_plane_payload(vb, i, size); } return 0; } static void dw100_buf_queue(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct dw100_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); } static void dw100_return_all_buffers(struct vb2_queue *q, enum vb2_buffer_state state) { struct dw100_ctx *ctx = vb2_get_drv_priv(q); struct vb2_v4l2_buffer *vbuf; for (;;) { if (V4L2_TYPE_IS_OUTPUT(q->type)) vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); else vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); if (!vbuf) return; v4l2_m2m_buf_done(vbuf, state); } } static int dw100_start_streaming(struct vb2_queue *q, unsigned int count) { struct dw100_ctx *ctx = vb2_get_drv_priv(q); struct dw100_q_data *q_data = dw100_get_q_data(ctx, q->type); int ret; q_data->sequence = 0; ret = dw100_create_mapping(ctx); if (ret) goto err; ret = pm_runtime_resume_and_get(&ctx->dw_dev->pdev->dev); if (ret) { dw100_destroy_mapping(ctx); goto err; } return 0; err: dw100_return_all_buffers(q, VB2_BUF_STATE_QUEUED); return ret; } static void dw100_stop_streaming(struct vb2_queue *q) { struct dw100_ctx *ctx = vb2_get_drv_priv(q); dw100_return_all_buffers(q, VB2_BUF_STATE_ERROR); pm_runtime_put_sync(&ctx->dw_dev->pdev->dev); dw100_destroy_mapping(ctx); } static const struct vb2_ops dw100_qops = { .queue_setup = dw100_queue_setup, .buf_prepare = dw100_buf_prepare, .buf_queue = dw100_buf_queue, .start_streaming = dw100_start_streaming, .stop_streaming = dw100_stop_streaming, }; static int dw100_m2m_queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq) { struct dw100_ctx *ctx = priv; int ret; src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE; src_vq->io_modes = VB2_MMAP | VB2_DMABUF; src_vq->drv_priv = ctx; src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); src_vq->ops = &dw100_qops; src_vq->mem_ops = &vb2_dma_contig_memops; src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; src_vq->lock = &ctx->vq_mutex; src_vq->dev = ctx->dw_dev->v4l2_dev.dev; ret = vb2_queue_init(src_vq); if (ret) return ret; dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; dst_vq->io_modes = VB2_MMAP | VB2_DMABUF; dst_vq->drv_priv = ctx; dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); dst_vq->ops = &dw100_qops; dst_vq->mem_ops = &vb2_dma_contig_memops; dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; dst_vq->lock = &ctx->vq_mutex; dst_vq->dev = ctx->dw_dev->v4l2_dev.dev; return vb2_queue_init(dst_vq); } static int dw100_open(struct file *file) { struct dw100_device *dw_dev = video_drvdata(file); struct dw100_ctx *ctx; struct v4l2_ctrl_handler *hdl; struct v4l2_pix_format_mplane *pix_fmt; int ret, i; ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); if (!ctx) return -ENOMEM; mutex_init(&ctx->vq_mutex); v4l2_fh_init(&ctx->fh, video_devdata(file)); file->private_data = &ctx->fh; ctx->dw_dev = dw_dev; ctx->q_data[DW100_QUEUE_SRC].fmt = &formats[0]; pix_fmt = &ctx->q_data[DW100_QUEUE_SRC].pix_fmt; pix_fmt->field = V4L2_FIELD_NONE; pix_fmt->colorspace = V4L2_COLORSPACE_REC709; pix_fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix_fmt->colorspace); pix_fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pix_fmt->colorspace); pix_fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(false, pix_fmt->colorspace, pix_fmt->ycbcr_enc); v4l2_fill_pixfmt_mp(pix_fmt, formats[0].fourcc, DW100_DEF_W, DW100_DEF_H); ctx->q_data[DW100_QUEUE_SRC].crop.top = 0; ctx->q_data[DW100_QUEUE_SRC].crop.left = 0; ctx->q_data[DW100_QUEUE_SRC].crop.width = DW100_DEF_W; ctx->q_data[DW100_QUEUE_SRC].crop.height = DW100_DEF_H; ctx->q_data[DW100_QUEUE_DST] = ctx->q_data[DW100_QUEUE_SRC]; hdl = &ctx->hdl; v4l2_ctrl_handler_init(hdl, ARRAY_SIZE(controls)); for (i = 0; i < ARRAY_SIZE(controls); i++) { ctx->ctrls[i] = v4l2_ctrl_new_custom(hdl, &controls[i], NULL); if (hdl->error) { dev_err(&ctx->dw_dev->pdev->dev, "Adding control (%d) failed\n", i); ret = hdl->error; goto err; } } ctx->fh.ctrl_handler = hdl; ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dw_dev->m2m_dev, ctx, &dw100_m2m_queue_init); if (IS_ERR(ctx->fh.m2m_ctx)) { ret = PTR_ERR(ctx->fh.m2m_ctx); goto err; } v4l2_fh_add(&ctx->fh); return 0; err: v4l2_ctrl_handler_free(hdl); v4l2_fh_exit(&ctx->fh); mutex_destroy(&ctx->vq_mutex); kfree(ctx); return ret; } static int dw100_release(struct file *file) { struct dw100_ctx *ctx = dw100_file2ctx(file); v4l2_fh_del(&ctx->fh); v4l2_fh_exit(&ctx->fh); v4l2_ctrl_handler_free(&ctx->hdl); v4l2_m2m_ctx_release(ctx->fh.m2m_ctx); mutex_destroy(&ctx->vq_mutex); kfree(ctx); return 0; } static const struct v4l2_file_operations dw100_fops = { .owner = THIS_MODULE, .open = dw100_open, .release = dw100_release, .poll = v4l2_m2m_fop_poll, .unlocked_ioctl = video_ioctl2, .mmap = v4l2_m2m_fop_mmap, }; static int dw100_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { strscpy(cap->driver, DRV_NAME, sizeof(cap->driver)); strscpy(cap->card, "DW100 dewarper", sizeof(cap->card)); return 0; } static int dw100_enum_fmt_vid(struct file *file, void *priv, struct v4l2_fmtdesc *f) { int i, num = 0; for (i = 0; i < ARRAY_SIZE(formats); i++) { if (formats[i].types & to_dw100_fmt_type(f->type)) { if (num == f->index) { f->pixelformat = formats[i].fourcc; return 0; } ++num; } } return -EINVAL; } static int dw100_enum_framesizes(struct file *file, void *priv, struct v4l2_frmsizeenum *fsize) { const struct dw100_fmt *fmt; if (fsize->index) return -EINVAL; fmt = dw100_find_pixel_format(fsize->pixel_format, DW100_FMT_OUTPUT | DW100_FMT_CAPTURE); if (!fmt) return -EINVAL; fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; fsize->stepwise = dw100_frmsize_stepwise; return 0; } static int dw100_g_fmt_vid(struct file *file, void *priv, struct v4l2_format *f) { struct dw100_ctx *ctx = dw100_file2ctx(file); struct vb2_queue *vq; struct dw100_q_data *q_data; vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); if (!vq) return -EINVAL; q_data = dw100_get_q_data(ctx, f->type); f->fmt.pix_mp = q_data->pix_fmt; return 0; } static int dw100_try_fmt(struct file *file, struct v4l2_format *f) { struct dw100_ctx *ctx = dw100_file2ctx(file); struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp; const struct dw100_fmt *fmt; fmt = dw100_find_format(f); if (!fmt) { fmt = &formats[0]; pix->pixelformat = fmt->fourcc; } v4l2_apply_frmsize_constraints(&pix->width, &pix->height, &dw100_frmsize_stepwise); v4l2_fill_pixfmt_mp(pix, fmt->fourcc, pix->width, pix->height); pix->field = V4L2_FIELD_NONE; if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { if (pix->colorspace == V4L2_COLORSPACE_DEFAULT) pix->colorspace = V4L2_COLORSPACE_REC709; if (pix->xfer_func == V4L2_XFER_FUNC_DEFAULT) pix->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix->colorspace); if (pix->ycbcr_enc == V4L2_YCBCR_ENC_DEFAULT) pix->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pix->colorspace); if (pix->quantization == V4L2_QUANTIZATION_DEFAULT) pix->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(false, pix->colorspace, pix->ycbcr_enc); } else { /* * The DW100 can't perform colorspace conversion, the colorspace * on the capture queue must be identical to the output queue. */ const struct dw100_q_data *q_data = dw100_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE); pix->colorspace = q_data->pix_fmt.colorspace; pix->xfer_func = q_data->pix_fmt.xfer_func; pix->ycbcr_enc = q_data->pix_fmt.ycbcr_enc; pix->quantization = q_data->pix_fmt.quantization; } return 0; } static int dw100_s_fmt(struct dw100_ctx *ctx, struct v4l2_format *f) { struct dw100_q_data *q_data; struct vb2_queue *vq; vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); if (!vq) return -EINVAL; q_data = dw100_get_q_data(ctx, f->type); if (!q_data) return -EINVAL; if (vb2_is_busy(vq)) { dev_dbg(&ctx->dw_dev->pdev->dev, "%s queue busy\n", __func__); return -EBUSY; } q_data->fmt = dw100_find_format(f); q_data->pix_fmt = f->fmt.pix_mp; q_data->crop.top = 0; q_data->crop.left = 0; q_data->crop.width = f->fmt.pix_mp.width; q_data->crop.height = f->fmt.pix_mp.height; /* Propagate buffers encoding */ if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { struct dw100_q_data *dst_q_data = dw100_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE); dst_q_data->pix_fmt.colorspace = q_data->pix_fmt.colorspace; dst_q_data->pix_fmt.ycbcr_enc = q_data->pix_fmt.ycbcr_enc; dst_q_data->pix_fmt.quantization = q_data->pix_fmt.quantization; dst_q_data->pix_fmt.xfer_func = q_data->pix_fmt.xfer_func; } dev_dbg(&ctx->dw_dev->pdev->dev, "Setting format for type %u, wxh: %ux%u, fmt: %p4cc\n", f->type, q_data->pix_fmt.width, q_data->pix_fmt.height, &q_data->pix_fmt.pixelformat); if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { int ret; u32 dims[V4L2_CTRL_MAX_DIMS] = {}; struct v4l2_ctrl *ctrl = ctx->ctrls[DW100_CTRL_DEWARPING_MAP]; dims[0] = dw100_get_n_vertices_from_length(q_data->pix_fmt.width); dims[1] = dw100_get_n_vertices_from_length(q_data->pix_fmt.height); ret = v4l2_ctrl_modify_dimensions(ctrl, dims); if (ret) { dev_err(&ctx->dw_dev->pdev->dev, "Modifying LUT dimensions failed with error %d\n", ret); return ret; } } return 0; } static int dw100_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) return -EINVAL; return dw100_try_fmt(file, f); } static int dw100_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct dw100_ctx *ctx = dw100_file2ctx(file); int ret; ret = dw100_try_fmt_vid_cap(file, priv, f); if (ret) return ret; ret = dw100_s_fmt(ctx, f); if (ret) return ret; return 0; } static int dw100_try_fmt_vid_out(struct file *file, void *priv, struct v4l2_format *f) { if (f->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) return -EINVAL; return dw100_try_fmt(file, f); } static int dw100_s_fmt_vid_out(struct file *file, void *priv, struct v4l2_format *f) { struct dw100_ctx *ctx = dw100_file2ctx(file); int ret; ret = dw100_try_fmt_vid_out(file, priv, f); if (ret) return ret; ret = dw100_s_fmt(ctx, f); if (ret) return ret; return 0; } static int dw100_g_selection(struct file *file, void *fh, struct v4l2_selection *sel) { struct dw100_ctx *ctx = dw100_file2ctx(file); struct dw100_q_data *src_q_data; if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) return -EINVAL; src_q_data = dw100_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE); switch (sel->target) { case V4L2_SEL_TGT_CROP_DEFAULT: case V4L2_SEL_TGT_CROP_BOUNDS: sel->r.top = 0; sel->r.left = 0; sel->r.width = src_q_data->pix_fmt.width; sel->r.height = src_q_data->pix_fmt.height; break; case V4L2_SEL_TGT_CROP: sel->r.top = src_q_data->crop.top; sel->r.left = src_q_data->crop.left; sel->r.width = src_q_data->crop.width; sel->r.height = src_q_data->crop.height; break; default: return -EINVAL; } return 0; } static int dw100_s_selection(struct file *file, void *fh, struct v4l2_selection *sel) { struct dw100_ctx *ctx = dw100_file2ctx(file); struct dw100_q_data *src_q_data; u32 qscalex, qscaley, qscale; int x, y, w, h; unsigned int wframe, hframe; if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) return -EINVAL; src_q_data = dw100_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE); dev_dbg(&ctx->dw_dev->pdev->dev, ">>> Buffer Type: %u Target: %u Rect: %ux%u@%d.%d\n", sel->type, sel->target, sel->r.width, sel->r.height, sel->r.left, sel->r.top); switch (sel->target) { case V4L2_SEL_TGT_CROP: wframe = src_q_data->pix_fmt.width; hframe = src_q_data->pix_fmt.height; sel->r.top = clamp_t(int, sel->r.top, 0, hframe - DW100_MIN_H); sel->r.left = clamp_t(int, sel->r.left, 0, wframe - DW100_MIN_W); sel->r.height = clamp(sel->r.height, DW100_MIN_H, hframe - sel->r.top); sel->r.width = clamp(sel->r.width, DW100_MIN_W, wframe - sel->r.left); /* UQ16.16 for float operations */ qscalex = (sel->r.width << 16) / wframe; qscaley = (sel->r.height << 16) / hframe; y = sel->r.top; x = sel->r.left; if (qscalex == qscaley) { qscale = qscalex; } else { switch (sel->flags) { case 0: qscale = (qscalex + qscaley) / 2; break; case V4L2_SEL_FLAG_GE: qscale = max(qscaley, qscalex); break; case V4L2_SEL_FLAG_LE: qscale = min(qscaley, qscalex); break; case V4L2_SEL_FLAG_LE | V4L2_SEL_FLAG_GE: return -ERANGE; default: return -EINVAL; } } w = (u32)((((u64)wframe << 16) * qscale) >> 32); h = (u32)((((u64)hframe << 16) * qscale) >> 32); x = x + (sel->r.width - w) / 2; y = y + (sel->r.height - h) / 2; x = min(wframe - w, (unsigned int)max(0, x)); y = min(hframe - h, (unsigned int)max(0, y)); sel->r.top = y; sel->r.left = x; sel->r.width = w; sel->r.height = h; src_q_data->crop.top = sel->r.top; src_q_data->crop.left = sel->r.left; src_q_data->crop.width = sel->r.width; src_q_data->crop.height = sel->r.height; break; default: return -EINVAL; } dev_dbg(&ctx->dw_dev->pdev->dev, "<<< Buffer Type: %u Target: %u Rect: %ux%u@%d.%d\n", sel->type, sel->target, sel->r.width, sel->r.height, sel->r.left, sel->r.top); return 0; } static const struct v4l2_ioctl_ops dw100_ioctl_ops = { .vidioc_querycap = dw100_querycap, .vidioc_enum_fmt_vid_cap = dw100_enum_fmt_vid, .vidioc_enum_framesizes = dw100_enum_framesizes, .vidioc_g_fmt_vid_cap_mplane = dw100_g_fmt_vid, .vidioc_try_fmt_vid_cap_mplane = dw100_try_fmt_vid_cap, .vidioc_s_fmt_vid_cap_mplane = dw100_s_fmt_vid_cap, .vidioc_enum_fmt_vid_out = dw100_enum_fmt_vid, .vidioc_g_fmt_vid_out_mplane = dw100_g_fmt_vid, .vidioc_try_fmt_vid_out_mplane = dw100_try_fmt_vid_out, .vidioc_s_fmt_vid_out_mplane = dw100_s_fmt_vid_out, .vidioc_g_selection = dw100_g_selection, .vidioc_s_selection = dw100_s_selection, .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs, .vidioc_querybuf = v4l2_m2m_ioctl_querybuf, .vidioc_qbuf = v4l2_m2m_ioctl_qbuf, .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf, .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf, .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs, .vidioc_expbuf = v4l2_m2m_ioctl_expbuf, .vidioc_streamon = v4l2_m2m_ioctl_streamon, .vidioc_streamoff = v4l2_m2m_ioctl_streamoff, .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, .vidioc_unsubscribe_event = v4l2_event_unsubscribe, }; static void dw100_job_finish(struct dw100_device *dw_dev, bool with_error) { struct dw100_ctx *curr_ctx; struct vb2_v4l2_buffer *src_vb, *dst_vb; enum vb2_buffer_state buf_state; curr_ctx = v4l2_m2m_get_curr_priv(dw_dev->m2m_dev); if (!curr_ctx) { dev_err(&dw_dev->pdev->dev, "Instance released before the end of transaction\n"); return; } src_vb = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx); dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx); if (likely(!with_error)) buf_state = VB2_BUF_STATE_DONE; else buf_state = VB2_BUF_STATE_ERROR; v4l2_m2m_buf_done(src_vb, buf_state); v4l2_m2m_buf_done(dst_vb, buf_state); dev_dbg(&dw_dev->pdev->dev, "Finishing transaction with%s error(s)\n", with_error ? "" : "out"); v4l2_m2m_job_finish(dw_dev->m2m_dev, curr_ctx->fh.m2m_ctx); } static void dw100_hw_reset(struct dw100_device *dw_dev) { u32 val; val = dw100_read(dw_dev, DW100_DEWARP_CTRL); val |= DW100_DEWARP_CTRL_ENABLE; val |= DW100_DEWARP_CTRL_SOFT_RESET; dw100_write(dw_dev, DW100_DEWARP_CTRL, val); val &= ~DW100_DEWARP_CTRL_SOFT_RESET; dw100_write(dw_dev, DW100_DEWARP_CTRL, val); } static void _dw100_hw_set_master_bus_enable(struct dw100_device *dw_dev, unsigned int enable) { u32 val; dev_dbg(&dw_dev->pdev->dev, "%sable master bus\n", enable ? "En" : "Dis"); val = dw100_read(dw_dev, DW100_BUS_CTRL); if (enable) val |= DW100_BUS_CTRL_AXI_MASTER_ENABLE; else val &= ~DW100_BUS_CTRL_AXI_MASTER_ENABLE; dw100_write(dw_dev, DW100_BUS_CTRL, val); } static void dw100_hw_master_bus_enable(struct dw100_device *dw_dev) { _dw100_hw_set_master_bus_enable(dw_dev, 1); } static void dw100_hw_master_bus_disable(struct dw100_device *dw_dev) { _dw100_hw_set_master_bus_enable(dw_dev, 0); } static void dw100_hw_dewarp_start(struct dw100_device *dw_dev) { u32 val; val = dw100_read(dw_dev, DW100_DEWARP_CTRL); dev_dbg(&dw_dev->pdev->dev, "Starting Hardware CTRL:0x%08x\n", val); dw100_write(dw_dev, DW100_DEWARP_CTRL, val | DW100_DEWARP_CTRL_START); dw100_write(dw_dev, DW100_DEWARP_CTRL, val); } static void dw100_hw_init_ctrl(struct dw100_device *dw_dev) { u32 val; /* * Input format YUV422_SP * Output format YUV422_SP * No hardware handshake (SW) * No automatic double src buffering (Single) * No automatic double dst buffering (Single) * No Black Line * Prefetch image pixel traversal */ val = DW100_DEWARP_CTRL_ENABLE /* Valid only for auto prefetch mode*/ | DW100_DEWARP_CTRL_PREFETCH_THRESHOLD(32); /* * Calculation mode required to support any scaling factor, * but x4 slower than traversal mode. * * DW100_DEWARP_CTRL_PREFETCH_MODE_TRAVERSAL * DW100_DEWARP_CTRL_PREFETCH_MODE_CALCULATION * DW100_DEWARP_CTRL_PREFETCH_MODE_AUTO * * TODO: Find heuristics requiring calculation mode */ val |= DW100_DEWARP_CTRL_PREFETCH_MODE_CALCULATION; dw100_write(dw_dev, DW100_DEWARP_CTRL, val); } static void dw100_hw_set_pixel_boundary(struct dw100_device *dw_dev) { u32 val; val = DW100_BOUNDARY_PIXEL_V(128) | DW100_BOUNDARY_PIXEL_U(128) | DW100_BOUNDARY_PIXEL_Y(0); dw100_write(dw_dev, DW100_BOUNDARY_PIXEL, val); } static void dw100_hw_set_scale(struct dw100_device *dw_dev, u8 scale) { dev_dbg(&dw_dev->pdev->dev, "Setting scale factor to %u\n", scale); dw100_write(dw_dev, DW100_SCALE_FACTOR, scale); } static void dw100_hw_set_roi(struct dw100_device *dw_dev, u32 x, u32 y) { u32 val; dev_dbg(&dw_dev->pdev->dev, "Setting ROI region to %u.%u\n", x, y); val = DW100_ROI_START_X(x) | DW100_ROI_START_Y(y); dw100_write(dw_dev, DW100_ROI_START, val); } static void dw100_hw_set_src_crop(struct dw100_device *dw_dev, const struct dw100_q_data *src_q_data, const struct dw100_q_data *dst_q_data) { const struct v4l2_rect *rect = &src_q_data->crop; u32 src_scale, qscale, left_scale, top_scale; /* HW Scale is UQ1.7 encoded */ src_scale = (rect->width << 7) / src_q_data->pix_fmt.width; dw100_hw_set_scale(dw_dev, src_scale); qscale = (dst_q_data->pix_fmt.width << 7) / src_q_data->pix_fmt.width; left_scale = ((rect->left << 7) * qscale) >> 14; top_scale = ((rect->top << 7) * qscale) >> 14; dw100_hw_set_roi(dw_dev, left_scale, top_scale); } static void dw100_hw_set_source(struct dw100_device *dw_dev, const struct dw100_q_data *q_data, struct vb2_buffer *buffer) { u32 width, height, stride, fourcc, val; const struct dw100_fmt *fmt = q_data->fmt; dma_addr_t addr_y = vb2_dma_contig_plane_dma_addr(buffer, 0); dma_addr_t addr_uv; width = q_data->pix_fmt.width; height = q_data->pix_fmt.height; stride = q_data->pix_fmt.plane_fmt[0].bytesperline; fourcc = q_data->fmt->fourcc; if (q_data->pix_fmt.num_planes == 2) addr_uv = vb2_dma_contig_plane_dma_addr(buffer, 1); else addr_uv = addr_y + (stride * height); dev_dbg(&dw_dev->pdev->dev, "Set HW source registers for %ux%u - stride %u, pixfmt: %p4cc, dma:%pad\n", width, height, stride, &fourcc, &addr_y); /* Pixel Format */ val = dw100_read(dw_dev, DW100_DEWARP_CTRL); val &= ~DW100_DEWARP_CTRL_INPUT_FORMAT_MASK; val |= DW100_DEWARP_CTRL_INPUT_FORMAT(fmt->reg_format); dw100_write(dw_dev, DW100_DEWARP_CTRL, val); /* Swap */ val = dw100_read(dw_dev, DW100_SWAP_CONTROL); val &= ~DW100_SWAP_CONTROL_SRC_MASK; /* * Data swapping is performed only on Y plane for source image. */ if (fmt->reg_swap_uv && fmt->reg_format == DW100_DEWARP_CTRL_FORMAT_YUV422_PACKED) val |= DW100_SWAP_CONTROL_SRC(DW100_SWAP_CONTROL_Y (DW100_SWAP_CONTROL_BYTE)); dw100_write(dw_dev, DW100_SWAP_CONTROL, val); /* Image resolution */ dw100_write(dw_dev, DW100_SRC_IMG_SIZE, DW100_IMG_SIZE_WIDTH(width) | DW100_IMG_SIZE_HEIGHT(height)); dw100_write(dw_dev, DW100_SRC_IMG_STRIDE, stride); /* Buffers */ dw100_write(dw_dev, DW100_SRC_IMG_Y_BASE, DW100_IMG_Y_BASE(addr_y)); dw100_write(dw_dev, DW100_SRC_IMG_UV_BASE, DW100_IMG_UV_BASE(addr_uv)); } static void dw100_hw_set_destination(struct dw100_device *dw_dev, const struct dw100_q_data *q_data, const struct dw100_fmt *ifmt, struct vb2_buffer *buffer) { u32 width, height, stride, fourcc, val, size_y, size_uv; const struct dw100_fmt *fmt = q_data->fmt; dma_addr_t addr_y, addr_uv; width = q_data->pix_fmt.width; height = q_data->pix_fmt.height; stride = q_data->pix_fmt.plane_fmt[0].bytesperline; fourcc = fmt->fourcc; addr_y = vb2_dma_contig_plane_dma_addr(buffer, 0); size_y = q_data->pix_fmt.plane_fmt[0].sizeimage; if (q_data->pix_fmt.num_planes == 2) { addr_uv = vb2_dma_contig_plane_dma_addr(buffer, 1); size_uv = q_data->pix_fmt.plane_fmt[1].sizeimage; } else { addr_uv = addr_y + ALIGN(stride * height, 16); size_uv = size_y; if (fmt->reg_format == DW100_DEWARP_CTRL_FORMAT_YUV420_SP) size_uv /= 2; } dev_dbg(&dw_dev->pdev->dev, "Set HW destination registers for %ux%u - stride %u, pixfmt: %p4cc, dma:%pad\n", width, height, stride, &fourcc, &addr_y); /* Pixel Format */ val = dw100_read(dw_dev, DW100_DEWARP_CTRL); val &= ~DW100_DEWARP_CTRL_OUTPUT_FORMAT_MASK; val |= DW100_DEWARP_CTRL_OUTPUT_FORMAT(fmt->reg_format); dw100_write(dw_dev, DW100_DEWARP_CTRL, val); /* Swap */ val = dw100_read(dw_dev, DW100_SWAP_CONTROL); val &= ~DW100_SWAP_CONTROL_DST_MASK; /* * Avoid to swap twice */ if (fmt->reg_swap_uv ^ (ifmt->reg_swap_uv && ifmt->reg_format != DW100_DEWARP_CTRL_FORMAT_YUV422_PACKED)) { if (fmt->reg_format == DW100_DEWARP_CTRL_FORMAT_YUV422_PACKED) val |= DW100_SWAP_CONTROL_DST(DW100_SWAP_CONTROL_Y (DW100_SWAP_CONTROL_BYTE)); else val |= DW100_SWAP_CONTROL_DST(DW100_SWAP_CONTROL_UV (DW100_SWAP_CONTROL_BYTE)); } dw100_write(dw_dev, DW100_SWAP_CONTROL, val); /* Image resolution */ dw100_write(dw_dev, DW100_DST_IMG_SIZE, DW100_IMG_SIZE_WIDTH(width) | DW100_IMG_SIZE_HEIGHT(height)); dw100_write(dw_dev, DW100_DST_IMG_STRIDE, stride); dw100_write(dw_dev, DW100_DST_IMG_Y_BASE, DW100_IMG_Y_BASE(addr_y)); dw100_write(dw_dev, DW100_DST_IMG_UV_BASE, DW100_IMG_UV_BASE(addr_uv)); dw100_write(dw_dev, DW100_DST_IMG_Y_SIZE1, DW100_DST_IMG_Y_SIZE(size_y)); dw100_write(dw_dev, DW100_DST_IMG_UV_SIZE1, DW100_DST_IMG_UV_SIZE(size_uv)); } static void dw100_hw_set_mapping(struct dw100_device *dw_dev, dma_addr_t addr, u32 width, u32 height) { dev_dbg(&dw_dev->pdev->dev, "Set HW mapping registers for %ux%u addr:%pad", width, height, &addr); dw100_write(dw_dev, DW100_MAP_LUT_ADDR, DW100_MAP_LUT_ADDR_ADDR(addr)); dw100_write(dw_dev, DW100_MAP_LUT_SIZE, DW100_MAP_LUT_SIZE_WIDTH(width) | DW100_MAP_LUT_SIZE_HEIGHT(height)); } static void dw100_hw_clear_irq(struct dw100_device *dw_dev, unsigned int irq) { dw100_write(dw_dev, DW100_INTERRUPT_STATUS, DW100_INTERRUPT_STATUS_INT_CLEAR(irq)); } static void dw100_hw_enable_irq(struct dw100_device *dw_dev) { dw100_write(dw_dev, DW100_INTERRUPT_STATUS, DW100_INTERRUPT_STATUS_INT_ENABLE_MASK); } static void dw100_hw_disable_irq(struct dw100_device *dw_dev) { dw100_write(dw_dev, DW100_INTERRUPT_STATUS, 0); } static u32 dw_hw_get_pending_irqs(struct dw100_device *dw_dev) { u32 val; val = dw100_read(dw_dev, DW100_INTERRUPT_STATUS); return DW100_INTERRUPT_STATUS_INT_STATUS(val); } static irqreturn_t dw100_irq_handler(int irq, void *dev_id) { struct dw100_device *dw_dev = dev_id; u32 pending_irqs, err_irqs, frame_done_irq; bool with_error = true; pending_irqs = dw_hw_get_pending_irqs(dw_dev); frame_done_irq = pending_irqs & DW100_INTERRUPT_STATUS_INT_FRAME_DONE; err_irqs = DW100_INTERRUPT_STATUS_INT_ERR_STATUS(pending_irqs); if (frame_done_irq) { dev_dbg(&dw_dev->pdev->dev, "Frame done interrupt\n"); with_error = false; err_irqs &= ~DW100_INTERRUPT_STATUS_INT_ERR_STATUS (DW100_INTERRUPT_STATUS_INT_ERR_FRAME_DONE); } if (err_irqs) dev_err(&dw_dev->pdev->dev, "Interrupt error: %#x\n", err_irqs); dw100_hw_disable_irq(dw_dev); dw100_hw_master_bus_disable(dw_dev); dw100_hw_clear_irq(dw_dev, pending_irqs | DW100_INTERRUPT_STATUS_INT_ERR_TIME_OUT); dw100_job_finish(dw_dev, with_error); return IRQ_HANDLED; } static void dw100_start(struct dw100_ctx *ctx, struct vb2_v4l2_buffer *in_vb, struct vb2_v4l2_buffer *out_vb) { struct dw100_device *dw_dev = ctx->dw_dev; out_vb->sequence = dw100_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)->sequence++; in_vb->sequence = dw100_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)->sequence++; dev_dbg(&ctx->dw_dev->pdev->dev, "Starting queues %p->%p, sequence %u->%u\n", v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE), v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE), in_vb->sequence, out_vb->sequence); v4l2_m2m_buf_copy_metadata(in_vb, out_vb, true); /* Now, let's deal with hardware ... */ dw100_hw_master_bus_disable(dw_dev); dw100_hw_init_ctrl(dw_dev); dw100_hw_set_pixel_boundary(dw_dev); dw100_hw_set_src_crop(dw_dev, &ctx->q_data[DW100_QUEUE_SRC], &ctx->q_data[DW100_QUEUE_DST]); dw100_hw_set_source(dw_dev, &ctx->q_data[DW100_QUEUE_SRC], &in_vb->vb2_buf); dw100_hw_set_destination(dw_dev, &ctx->q_data[DW100_QUEUE_DST], ctx->q_data[DW100_QUEUE_SRC].fmt, &out_vb->vb2_buf); dw100_hw_set_mapping(dw_dev, ctx->map_dma, ctx->map_width, ctx->map_height); dw100_hw_enable_irq(dw_dev); dw100_hw_dewarp_start(dw_dev); /* Enable Bus */ dw100_hw_master_bus_enable(dw_dev); } static void dw100_device_run(void *priv) { struct dw100_ctx *ctx = priv; struct vb2_v4l2_buffer *src_buf, *dst_buf; src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); dw100_start(ctx, src_buf, dst_buf); } static const struct v4l2_m2m_ops dw100_m2m_ops = { .device_run = dw100_device_run, }; static struct video_device *dw100_init_video_device(struct dw100_device *dw_dev) { struct video_device *vfd = &dw_dev->vfd; vfd->vfl_dir = VFL_DIR_M2M; vfd->fops = &dw100_fops; vfd->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING; vfd->ioctl_ops = &dw100_ioctl_ops; vfd->minor = -1; vfd->release = video_device_release_empty; vfd->v4l2_dev = &dw_dev->v4l2_dev; vfd->lock = &dw_dev->vfd_mutex; strscpy(vfd->name, DRV_NAME, sizeof(vfd->name)); mutex_init(vfd->lock); video_set_drvdata(vfd, dw_dev); return vfd; } static int dw100_dump_regs_show(struct seq_file *m, void *private) { struct dw100_device *dw_dev = m->private; int ret; ret = pm_runtime_resume_and_get(&dw_dev->pdev->dev); if (ret < 0) return ret; ret = dw100_dump_regs(m); pm_runtime_put_sync(&dw_dev->pdev->dev); return ret; } DEFINE_SHOW_ATTRIBUTE(dw100_dump_regs); static void dw100_debugfs_init(struct dw100_device *dw_dev) { dw_dev->debugfs_root = debugfs_create_dir(dev_name(&dw_dev->pdev->dev), NULL); debugfs_create_file("dump_regs", 0600, dw_dev->debugfs_root, dw_dev, &dw100_dump_regs_fops); } static void dw100_debugfs_exit(struct dw100_device *dw_dev) { debugfs_remove_recursive(dw_dev->debugfs_root); } static int dw100_probe(struct platform_device *pdev) { struct dw100_device *dw_dev; struct video_device *vfd; int ret, irq; dw_dev = devm_kzalloc(&pdev->dev, sizeof(*dw_dev), GFP_KERNEL); if (!dw_dev) return -ENOMEM; dw_dev->pdev = pdev; ret = devm_clk_bulk_get_all(&pdev->dev, &dw_dev->clks); if (ret < 0) { dev_err(&pdev->dev, "Unable to get clocks: %d\n", ret); return ret; } dw_dev->num_clks = ret; dw_dev->mmio = devm_platform_get_and_ioremap_resource(pdev, 0, NULL); if (IS_ERR(dw_dev->mmio)) return PTR_ERR(dw_dev->mmio); irq = platform_get_irq(pdev, 0); if (irq < 0) return irq; platform_set_drvdata(pdev, dw_dev); pm_runtime_enable(&pdev->dev); ret = pm_runtime_resume_and_get(&pdev->dev); if (ret < 0) { dev_err(&pdev->dev, "Unable to resume the device: %d\n", ret); goto err_pm; } pm_runtime_put_sync(&pdev->dev); ret = devm_request_irq(&pdev->dev, irq, dw100_irq_handler, IRQF_ONESHOT, dev_name(&pdev->dev), dw_dev); if (ret < 0) { dev_err(&pdev->dev, "Failed to request irq: %d\n", ret); goto err_pm; } ret = v4l2_device_register(&pdev->dev, &dw_dev->v4l2_dev); if (ret) goto err_pm; vfd = dw100_init_video_device(dw_dev); dw_dev->m2m_dev = v4l2_m2m_init(&dw100_m2m_ops); if (IS_ERR(dw_dev->m2m_dev)) { dev_err(&pdev->dev, "Failed to init mem2mem device\n"); ret = PTR_ERR(dw_dev->m2m_dev); goto err_v4l2; } dw_dev->mdev.dev = &pdev->dev; strscpy(dw_dev->mdev.model, "dw100", sizeof(dw_dev->mdev.model)); media_device_init(&dw_dev->mdev); dw_dev->v4l2_dev.mdev = &dw_dev->mdev; ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1); if (ret) { dev_err(&pdev->dev, "Failed to register video device\n"); goto err_m2m; } ret = v4l2_m2m_register_media_controller(dw_dev->m2m_dev, vfd, MEDIA_ENT_F_PROC_VIDEO_SCALER); if (ret) { dev_err(&pdev->dev, "Failed to init mem2mem media controller\n"); goto error_v4l2; } ret = media_device_register(&dw_dev->mdev); if (ret) { dev_err(&pdev->dev, "Failed to register mem2mem media device\n"); goto error_m2m_mc; } dw100_debugfs_init(dw_dev); dev_info(&pdev->dev, "dw100 v4l2 m2m registered as /dev/video%u\n", vfd->num); return 0; error_m2m_mc: v4l2_m2m_unregister_media_controller(dw_dev->m2m_dev); error_v4l2: video_unregister_device(vfd); err_m2m: media_device_cleanup(&dw_dev->mdev); v4l2_m2m_release(dw_dev->m2m_dev); err_v4l2: v4l2_device_unregister(&dw_dev->v4l2_dev); err_pm: pm_runtime_disable(&pdev->dev); return ret; } static void dw100_remove(struct platform_device *pdev) { struct dw100_device *dw_dev = platform_get_drvdata(pdev); dw100_debugfs_exit(dw_dev); pm_runtime_disable(&pdev->dev); media_device_unregister(&dw_dev->mdev); v4l2_m2m_unregister_media_controller(dw_dev->m2m_dev); media_device_cleanup(&dw_dev->mdev); video_unregister_device(&dw_dev->vfd); mutex_destroy(dw_dev->vfd.lock); v4l2_m2m_release(dw_dev->m2m_dev); v4l2_device_unregister(&dw_dev->v4l2_dev); } static int __maybe_unused dw100_runtime_suspend(struct device *dev) { struct dw100_device *dw_dev = dev_get_drvdata(dev); clk_bulk_disable_unprepare(dw_dev->num_clks, dw_dev->clks); return 0; } static int __maybe_unused dw100_runtime_resume(struct device *dev) { int ret; struct dw100_device *dw_dev = dev_get_drvdata(dev); ret = clk_bulk_prepare_enable(dw_dev->num_clks, dw_dev->clks); if (ret) return ret; dw100_hw_reset(dw_dev); return 0; } static const struct dev_pm_ops dw100_pm = { SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume) SET_RUNTIME_PM_OPS(dw100_runtime_suspend, dw100_runtime_resume, NULL) }; static const struct of_device_id dw100_dt_ids[] = { { .compatible = "nxp,imx8mp-dw100", .data = NULL }, { }, }; MODULE_DEVICE_TABLE(of, dw100_dt_ids); static struct platform_driver dw100_driver = { .probe = dw100_probe, .remove = dw100_remove, .driver = { .name = DRV_NAME, .pm = &dw100_pm, .of_match_table = dw100_dt_ids, }, }; module_platform_driver(dw100_driver); MODULE_DESCRIPTION("DW100 Hardware dewarper"); MODULE_AUTHOR("Xavier Roumegue "); MODULE_LICENSE("GPL");