/* * Coda multi-standard codec IP * * Copyright (C) 2012 Vista Silicon S.L. * Javier Martin, * Xavier Duret * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "coda.h" #define CODA_NAME "coda" #define CODA_MAX_INSTANCES 4 #define CODA_FMO_BUF_SIZE 32 #define CODADX6_WORK_BUF_SIZE (288 * 1024 + CODA_FMO_BUF_SIZE * 8 * 1024) #define CODA7_WORK_BUF_SIZE (512 * 1024 + CODA_FMO_BUF_SIZE * 8 * 1024) #define CODA_PARA_BUF_SIZE (10 * 1024) #define CODA_ISRAM_SIZE (2048 * 2) #define CODA_OUTPUT_BUFS 4 #define CODA_CAPTURE_BUFS 2 #define MAX_W 720 #define MAX_H 576 #define CODA_MAX_FRAME_SIZE 0x90000 #define FMO_SLICE_SAVE_BUF_SIZE (32) #define CODA_DEFAULT_GAMMA 4096 #define MIN_W 176 #define MIN_H 144 #define MAX_W 720 #define MAX_H 576 #define S_ALIGN 1 /* multiple of 2 */ #define W_ALIGN 1 /* multiple of 2 */ #define H_ALIGN 1 /* multiple of 2 */ #define fh_to_ctx(__fh) container_of(__fh, struct coda_ctx, fh) static int coda_debug; module_param(coda_debug, int, 0); MODULE_PARM_DESC(coda_debug, "Debug level (0-1)"); enum { V4L2_M2M_SRC = 0, V4L2_M2M_DST = 1, }; enum coda_fmt_type { CODA_FMT_ENC, CODA_FMT_RAW, }; enum coda_inst_type { CODA_INST_ENCODER, CODA_INST_DECODER, }; enum coda_product { CODA_DX6 = 0xf001, }; struct coda_fmt { char *name; u32 fourcc; enum coda_fmt_type type; }; struct coda_devtype { char *firmware; enum coda_product product; struct coda_fmt *formats; unsigned int num_formats; size_t workbuf_size; }; /* Per-queue, driver-specific private data */ struct coda_q_data { unsigned int width; unsigned int height; unsigned int sizeimage; struct coda_fmt *fmt; }; struct coda_aux_buf { void *vaddr; dma_addr_t paddr; u32 size; }; struct coda_dev { struct v4l2_device v4l2_dev; struct video_device vfd; struct platform_device *plat_dev; const struct coda_devtype *devtype; void __iomem *regs_base; struct clk *clk_per; struct clk *clk_ahb; struct coda_aux_buf codebuf; struct coda_aux_buf workbuf; spinlock_t irqlock; struct mutex dev_mutex; struct v4l2_m2m_dev *m2m_dev; struct vb2_alloc_ctx *alloc_ctx; int instances; }; struct coda_params { u8 h264_intra_qp; u8 h264_inter_qp; u8 mpeg4_intra_qp; u8 mpeg4_inter_qp; u8 gop_size; int codec_mode; enum v4l2_mpeg_video_multi_slice_mode slice_mode; u32 framerate; u16 bitrate; u32 slice_max_mb; }; struct coda_ctx { struct coda_dev *dev; int aborting; int rawstreamon; int compstreamon; u32 isequence; struct coda_q_data q_data[2]; enum coda_inst_type inst_type; enum v4l2_colorspace colorspace; struct coda_params params; struct v4l2_m2m_ctx *m2m_ctx; struct v4l2_ctrl_handler ctrls; struct v4l2_fh fh; struct vb2_buffer *reference; int gopcounter; char vpu_header[3][64]; int vpu_header_size[3]; struct coda_aux_buf parabuf; int idx; }; static inline void coda_write(struct coda_dev *dev, u32 data, u32 reg) { v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "%s: data=0x%x, reg=0x%x\n", __func__, data, reg); writel(data, dev->regs_base + reg); } static inline unsigned int coda_read(struct coda_dev *dev, u32 reg) { u32 data; data = readl(dev->regs_base + reg); v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "%s: data=0x%x, reg=0x%x\n", __func__, data, reg); return data; } static inline unsigned long coda_isbusy(struct coda_dev *dev) { return coda_read(dev, CODA_REG_BIT_BUSY); } static inline int coda_is_initialized(struct coda_dev *dev) { return (coda_read(dev, CODA_REG_BIT_CUR_PC) != 0); } static int coda_wait_timeout(struct coda_dev *dev) { unsigned long timeout = jiffies + msecs_to_jiffies(1000); while (coda_isbusy(dev)) { if (time_after(jiffies, timeout)) return -ETIMEDOUT; } return 0; } static void coda_command_async(struct coda_ctx *ctx, int cmd) { struct coda_dev *dev = ctx->dev; coda_write(dev, CODA_REG_BIT_BUSY_FLAG, CODA_REG_BIT_BUSY); coda_write(dev, ctx->idx, CODA_REG_BIT_RUN_INDEX); coda_write(dev, ctx->params.codec_mode, CODA_REG_BIT_RUN_COD_STD); coda_write(dev, cmd, CODA_REG_BIT_RUN_COMMAND); } static int coda_command_sync(struct coda_ctx *ctx, int cmd) { struct coda_dev *dev = ctx->dev; coda_command_async(ctx, cmd); return coda_wait_timeout(dev); } static struct coda_q_data *get_q_data(struct coda_ctx *ctx, enum v4l2_buf_type type) { switch (type) { case V4L2_BUF_TYPE_VIDEO_OUTPUT: return &(ctx->q_data[V4L2_M2M_SRC]); case V4L2_BUF_TYPE_VIDEO_CAPTURE: return &(ctx->q_data[V4L2_M2M_DST]); default: BUG(); } return NULL; } /* * Add one array of supported formats for each version of Coda: * i.MX27 -> codadx6 * i.MX51 -> coda7 * i.MX6 -> coda960 */ static struct coda_fmt codadx6_formats[] = { { .name = "YUV 4:2:0 Planar", .fourcc = V4L2_PIX_FMT_YUV420, .type = CODA_FMT_RAW, }, { .name = "H264 Encoded Stream", .fourcc = V4L2_PIX_FMT_H264, .type = CODA_FMT_ENC, }, { .name = "MPEG4 Encoded Stream", .fourcc = V4L2_PIX_FMT_MPEG4, .type = CODA_FMT_ENC, }, }; static struct coda_fmt *find_format(struct coda_dev *dev, struct v4l2_format *f) { struct coda_fmt *formats = dev->devtype->formats; int num_formats = dev->devtype->num_formats; unsigned int k; for (k = 0; k < num_formats; k++) { if (formats[k].fourcc == f->fmt.pix.pixelformat) break; } if (k == num_formats) return NULL; return &formats[k]; } /* * V4L2 ioctl() operations. */ static int vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { strlcpy(cap->driver, CODA_NAME, sizeof(cap->driver)); strlcpy(cap->card, CODA_NAME, sizeof(cap->card)); strlcpy(cap->bus_info, CODA_NAME, sizeof(cap->bus_info)); cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; return 0; } static int enum_fmt(void *priv, struct v4l2_fmtdesc *f, enum coda_fmt_type type) { struct coda_ctx *ctx = fh_to_ctx(priv); struct coda_dev *dev = ctx->dev; struct coda_fmt *formats = dev->devtype->formats; struct coda_fmt *fmt; int num_formats = dev->devtype->num_formats; int i, num = 0; for (i = 0; i < num_formats; i++) { if (formats[i].type == type) { if (num == f->index) break; ++num; } } if (i < num_formats) { fmt = &formats[i]; strlcpy(f->description, fmt->name, sizeof(f->description)); f->pixelformat = fmt->fourcc; return 0; } /* Format not found */ return -EINVAL; } static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fmtdesc *f) { return enum_fmt(priv, f, CODA_FMT_ENC); } static int vidioc_enum_fmt_vid_out(struct file *file, void *priv, struct v4l2_fmtdesc *f) { return enum_fmt(priv, f, CODA_FMT_RAW); } static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f) { struct vb2_queue *vq; struct coda_q_data *q_data; struct coda_ctx *ctx = fh_to_ctx(priv); vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); if (!vq) return -EINVAL; q_data = get_q_data(ctx, f->type); f->fmt.pix.field = V4L2_FIELD_NONE; f->fmt.pix.pixelformat = q_data->fmt->fourcc; f->fmt.pix.width = q_data->width; f->fmt.pix.height = q_data->height; if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV420) f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 2); else /* encoded formats h.264/mpeg4 */ f->fmt.pix.bytesperline = 0; f->fmt.pix.sizeimage = q_data->sizeimage; f->fmt.pix.colorspace = ctx->colorspace; return 0; } static int vidioc_try_fmt(struct coda_dev *dev, struct v4l2_format *f) { enum v4l2_field field; field = f->fmt.pix.field; if (field == V4L2_FIELD_ANY) field = V4L2_FIELD_NONE; else if (V4L2_FIELD_NONE != field) return -EINVAL; /* V4L2 specification suggests the driver corrects the format struct * if any of the dimensions is unsupported */ f->fmt.pix.field = field; if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV420) { v4l_bound_align_image(&f->fmt.pix.width, MIN_W, MAX_W, W_ALIGN, &f->fmt.pix.height, MIN_H, MAX_H, H_ALIGN, S_ALIGN); f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 2); f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; } else { /*encoded formats h.264/mpeg4 */ f->fmt.pix.bytesperline = 0; f->fmt.pix.sizeimage = CODA_MAX_FRAME_SIZE; } return 0; } static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { int ret; struct coda_fmt *fmt; struct coda_ctx *ctx = fh_to_ctx(priv); fmt = find_format(ctx->dev, f); /* * Since decoding support is not implemented yet do not allow * CODA_FMT_RAW formats in the capture interface. */ if (!fmt || !(fmt->type == CODA_FMT_ENC)) f->fmt.pix.pixelformat = V4L2_PIX_FMT_H264; f->fmt.pix.colorspace = ctx->colorspace; ret = vidioc_try_fmt(ctx->dev, f); if (ret < 0) return ret; return 0; } static int vidioc_try_fmt_vid_out(struct file *file, void *priv, struct v4l2_format *f) { struct coda_ctx *ctx = fh_to_ctx(priv); struct coda_fmt *fmt; int ret; fmt = find_format(ctx->dev, f); /* * Since decoding support is not implemented yet do not allow * CODA_FMT formats in the capture interface. */ if (!fmt || !(fmt->type == CODA_FMT_RAW)) f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420; if (!f->fmt.pix.colorspace) f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709; ret = vidioc_try_fmt(ctx->dev, f); if (ret < 0) return ret; return 0; } static int vidioc_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f) { struct coda_q_data *q_data; struct vb2_queue *vq; int ret; vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); if (!vq) return -EINVAL; q_data = get_q_data(ctx, f->type); if (!q_data) return -EINVAL; if (vb2_is_busy(vq)) { v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__); return -EBUSY; } ret = vidioc_try_fmt(ctx->dev, f); if (ret) return ret; q_data->fmt = find_format(ctx->dev, f); q_data->width = f->fmt.pix.width; q_data->height = f->fmt.pix.height; if (q_data->fmt->fourcc == V4L2_PIX_FMT_YUV420) { q_data->sizeimage = q_data->width * q_data->height * 3 / 2; } else { /* encoded format h.264/mpeg-4 */ q_data->sizeimage = CODA_MAX_FRAME_SIZE; } v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "Setting format for type %d, wxh: %dx%d, fmt: %d\n", f->type, q_data->width, q_data->height, q_data->fmt->fourcc); return 0; } static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { int ret; ret = vidioc_try_fmt_vid_cap(file, priv, f); if (ret) return ret; return vidioc_s_fmt(fh_to_ctx(priv), f); } static int vidioc_s_fmt_vid_out(struct file *file, void *priv, struct v4l2_format *f) { struct coda_ctx *ctx = fh_to_ctx(priv); int ret; ret = vidioc_try_fmt_vid_out(file, priv, f); if (ret) return ret; ret = vidioc_s_fmt(fh_to_ctx(priv), f); if (ret) ctx->colorspace = f->fmt.pix.colorspace; return ret; } static int vidioc_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *reqbufs) { struct coda_ctx *ctx = fh_to_ctx(priv); return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs); } static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *buf) { struct coda_ctx *ctx = fh_to_ctx(priv); return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf); } static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) { struct coda_ctx *ctx = fh_to_ctx(priv); return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf); } static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) { struct coda_ctx *ctx = fh_to_ctx(priv); return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf); } static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type type) { struct coda_ctx *ctx = fh_to_ctx(priv); return v4l2_m2m_streamon(file, ctx->m2m_ctx, type); } static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type type) { struct coda_ctx *ctx = fh_to_ctx(priv); return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type); } static const struct v4l2_ioctl_ops coda_ioctl_ops = { .vidioc_querycap = vidioc_querycap, .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, .vidioc_g_fmt_vid_cap = vidioc_g_fmt, .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out, .vidioc_g_fmt_vid_out = vidioc_g_fmt, .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out, .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, .vidioc_reqbufs = vidioc_reqbufs, .vidioc_querybuf = vidioc_querybuf, .vidioc_qbuf = vidioc_qbuf, .vidioc_dqbuf = vidioc_dqbuf, .vidioc_streamon = vidioc_streamon, .vidioc_streamoff = vidioc_streamoff, }; /* * Mem-to-mem operations. */ static void coda_device_run(void *m2m_priv) { struct coda_ctx *ctx = m2m_priv; struct coda_q_data *q_data_src, *q_data_dst; struct vb2_buffer *src_buf, *dst_buf; struct coda_dev *dev = ctx->dev; int force_ipicture; int quant_param = 0; u32 picture_y, picture_cb, picture_cr; u32 pic_stream_buffer_addr, pic_stream_buffer_size; u32 dst_fourcc; src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx); dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); dst_fourcc = q_data_dst->fmt->fourcc; src_buf->v4l2_buf.sequence = ctx->isequence; dst_buf->v4l2_buf.sequence = ctx->isequence; ctx->isequence++; /* * Workaround coda firmware BUG that only marks the first * frame as IDR. This is a problem for some decoders that can't * recover when a frame is lost. */ if (src_buf->v4l2_buf.sequence % ctx->params.gop_size) { src_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_PFRAME; src_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_KEYFRAME; } else { src_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_KEYFRAME; src_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_PFRAME; } /* * Copy headers at the beginning of the first frame for H.264 only. * In MPEG4 they are already copied by the coda. */ if (src_buf->v4l2_buf.sequence == 0) { pic_stream_buffer_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0) + ctx->vpu_header_size[0] + ctx->vpu_header_size[1] + ctx->vpu_header_size[2]; pic_stream_buffer_size = CODA_MAX_FRAME_SIZE - ctx->vpu_header_size[0] - ctx->vpu_header_size[1] - ctx->vpu_header_size[2]; memcpy(vb2_plane_vaddr(dst_buf, 0), &ctx->vpu_header[0][0], ctx->vpu_header_size[0]); memcpy(vb2_plane_vaddr(dst_buf, 0) + ctx->vpu_header_size[0], &ctx->vpu_header[1][0], ctx->vpu_header_size[1]); memcpy(vb2_plane_vaddr(dst_buf, 0) + ctx->vpu_header_size[0] + ctx->vpu_header_size[1], &ctx->vpu_header[2][0], ctx->vpu_header_size[2]); } else { pic_stream_buffer_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0); pic_stream_buffer_size = CODA_MAX_FRAME_SIZE; } if (src_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) { force_ipicture = 1; switch (dst_fourcc) { case V4L2_PIX_FMT_H264: quant_param = ctx->params.h264_intra_qp; break; case V4L2_PIX_FMT_MPEG4: quant_param = ctx->params.mpeg4_intra_qp; break; default: v4l2_warn(&ctx->dev->v4l2_dev, "cannot set intra qp, fmt not supported\n"); break; } } else { force_ipicture = 0; switch (dst_fourcc) { case V4L2_PIX_FMT_H264: quant_param = ctx->params.h264_inter_qp; break; case V4L2_PIX_FMT_MPEG4: quant_param = ctx->params.mpeg4_inter_qp; break; default: v4l2_warn(&ctx->dev->v4l2_dev, "cannot set inter qp, fmt not supported\n"); break; } } /* submit */ coda_write(dev, 0, CODA_CMD_ENC_PIC_ROT_MODE); coda_write(dev, quant_param, CODA_CMD_ENC_PIC_QS); picture_y = vb2_dma_contig_plane_dma_addr(src_buf, 0); picture_cb = picture_y + q_data_src->width * q_data_src->height; picture_cr = picture_cb + q_data_src->width / 2 * q_data_src->height / 2; coda_write(dev, picture_y, CODA_CMD_ENC_PIC_SRC_ADDR_Y); coda_write(dev, picture_cb, CODA_CMD_ENC_PIC_SRC_ADDR_CB); coda_write(dev, picture_cr, CODA_CMD_ENC_PIC_SRC_ADDR_CR); coda_write(dev, force_ipicture << 1 & 0x2, CODA_CMD_ENC_PIC_OPTION); coda_write(dev, pic_stream_buffer_addr, CODA_CMD_ENC_PIC_BB_START); coda_write(dev, pic_stream_buffer_size / 1024, CODA_CMD_ENC_PIC_BB_SIZE); coda_command_async(ctx, CODA_COMMAND_PIC_RUN); } static int coda_job_ready(void *m2m_priv) { struct coda_ctx *ctx = m2m_priv; /* * For both 'P' and 'key' frame cases 1 picture * and 1 frame are needed. */ if (!v4l2_m2m_num_src_bufs_ready(ctx->m2m_ctx) || !v4l2_m2m_num_dst_bufs_ready(ctx->m2m_ctx)) { v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "not ready: not enough video buffers.\n"); return 0; } /* For P frames a reference picture is needed too */ if ((ctx->gopcounter != (ctx->params.gop_size - 1)) && !ctx->reference) { v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "not ready: reference picture not available.\n"); return 0; } if (coda_isbusy(ctx->dev)) { v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "not ready: coda is still busy.\n"); return 0; } v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "job ready\n"); return 1; } static void coda_job_abort(void *priv) { struct coda_ctx *ctx = priv; struct coda_dev *dev = ctx->dev; ctx->aborting = 1; v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "Aborting task\n"); v4l2_m2m_job_finish(dev->m2m_dev, ctx->m2m_ctx); } static void coda_lock(void *m2m_priv) { struct coda_ctx *ctx = m2m_priv; struct coda_dev *pcdev = ctx->dev; mutex_lock(&pcdev->dev_mutex); } static void coda_unlock(void *m2m_priv) { struct coda_ctx *ctx = m2m_priv; struct coda_dev *pcdev = ctx->dev; mutex_unlock(&pcdev->dev_mutex); } static struct v4l2_m2m_ops coda_m2m_ops = { .device_run = coda_device_run, .job_ready = coda_job_ready, .job_abort = coda_job_abort, .lock = coda_lock, .unlock = coda_unlock, }; static void set_default_params(struct coda_ctx *ctx) { struct coda_dev *dev = ctx->dev; ctx->params.codec_mode = CODA_MODE_INVALID; ctx->colorspace = V4L2_COLORSPACE_REC709; ctx->params.framerate = 30; ctx->reference = NULL; ctx->aborting = 0; /* Default formats for output and input queues */ ctx->q_data[V4L2_M2M_SRC].fmt = &dev->devtype->formats[0]; ctx->q_data[V4L2_M2M_DST].fmt = &dev->devtype->formats[1]; ctx->q_data[V4L2_M2M_SRC].width = MAX_W; ctx->q_data[V4L2_M2M_SRC].height = MAX_H; ctx->q_data[V4L2_M2M_SRC].sizeimage = (MAX_W * MAX_H * 3) / 2; ctx->q_data[V4L2_M2M_DST].width = MAX_W; ctx->q_data[V4L2_M2M_DST].height = MAX_H; ctx->q_data[V4L2_M2M_DST].sizeimage = CODA_MAX_FRAME_SIZE; } /* * Queue operations */ static int coda_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[]) { struct coda_ctx *ctx = vb2_get_drv_priv(vq); unsigned int size; if (vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { *nbuffers = CODA_OUTPUT_BUFS; if (fmt) size = fmt->fmt.pix.width * fmt->fmt.pix.height * 3 / 2; else size = MAX_W * MAX_H * 3 / 2; } else { *nbuffers = CODA_CAPTURE_BUFS; size = CODA_MAX_FRAME_SIZE; } *nplanes = 1; sizes[0] = size; alloc_ctxs[0] = ctx->dev->alloc_ctx; v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "get %d buffer(s) of size %d each.\n", *nbuffers, size); return 0; } static int coda_buf_prepare(struct vb2_buffer *vb) { struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); struct coda_q_data *q_data; q_data = get_q_data(ctx, vb->vb2_queue->type); if (vb2_plane_size(vb, 0) < q_data->sizeimage) { v4l2_warn(&ctx->dev->v4l2_dev, "%s data will not fit into plane (%lu < %lu)\n", __func__, vb2_plane_size(vb, 0), (long)q_data->sizeimage); return -EINVAL; } vb2_set_plane_payload(vb, 0, q_data->sizeimage); return 0; } static void coda_buf_queue(struct vb2_buffer *vb) { struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); v4l2_m2m_buf_queue(ctx->m2m_ctx, vb); } static void coda_wait_prepare(struct vb2_queue *q) { struct coda_ctx *ctx = vb2_get_drv_priv(q); coda_unlock(ctx); } static void coda_wait_finish(struct vb2_queue *q) { struct coda_ctx *ctx = vb2_get_drv_priv(q); coda_lock(ctx); } static int coda_start_streaming(struct vb2_queue *q, unsigned int count) { struct coda_ctx *ctx = vb2_get_drv_priv(q); struct v4l2_device *v4l2_dev = &ctx->dev->v4l2_dev; u32 bitstream_buf, bitstream_size; struct coda_dev *dev = ctx->dev; struct coda_q_data *q_data_src, *q_data_dst; u32 dst_fourcc; struct vb2_buffer *buf; struct vb2_queue *src_vq; u32 value; int i = 0; if (count < 1) return -EINVAL; if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) ctx->rawstreamon = 1; else ctx->compstreamon = 1; /* Don't start the coda unless both queues are on */ if (!(ctx->rawstreamon & ctx->compstreamon)) return 0; ctx->gopcounter = ctx->params.gop_size - 1; q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); bitstream_buf = vb2_dma_contig_plane_dma_addr(buf, 0); q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); bitstream_size = q_data_dst->sizeimage; dst_fourcc = q_data_dst->fmt->fourcc; /* Find out whether coda must encode or decode */ if (q_data_src->fmt->type == CODA_FMT_RAW && q_data_dst->fmt->type == CODA_FMT_ENC) { ctx->inst_type = CODA_INST_ENCODER; } else if (q_data_src->fmt->type == CODA_FMT_ENC && q_data_dst->fmt->type == CODA_FMT_RAW) { ctx->inst_type = CODA_INST_DECODER; v4l2_err(v4l2_dev, "decoding not supported.\n"); return -EINVAL; } else { v4l2_err(v4l2_dev, "couldn't tell instance type.\n"); return -EINVAL; } if (!coda_is_initialized(dev)) { v4l2_err(v4l2_dev, "coda is not initialized.\n"); return -EFAULT; } coda_write(dev, ctx->parabuf.paddr, CODA_REG_BIT_PARA_BUF_ADDR); coda_write(dev, bitstream_buf, CODA_REG_BIT_RD_PTR(ctx->idx)); coda_write(dev, bitstream_buf, CODA_REG_BIT_WR_PTR(ctx->idx)); switch (dev->devtype->product) { case CODA_DX6: coda_write(dev, CODADX6_STREAM_BUF_DYNALLOC_EN | CODADX6_STREAM_BUF_PIC_RESET, CODA_REG_BIT_STREAM_CTRL); break; default: coda_write(dev, CODA7_STREAM_BUF_DYNALLOC_EN | CODA7_STREAM_BUF_PIC_RESET, CODA_REG_BIT_STREAM_CTRL); } /* Configure the coda */ coda_write(dev, 0xffff4c00, CODA_REG_BIT_SEARCH_RAM_BASE_ADDR); /* Could set rotation here if needed */ switch (dev->devtype->product) { case CODA_DX6: value = (q_data_src->width & CODADX6_PICWIDTH_MASK) << CODADX6_PICWIDTH_OFFSET; break; default: value = (q_data_src->width & CODA7_PICWIDTH_MASK) << CODA7_PICWIDTH_OFFSET; } value |= (q_data_src->height & CODA_PICHEIGHT_MASK) << CODA_PICHEIGHT_OFFSET; coda_write(dev, value, CODA_CMD_ENC_SEQ_SRC_SIZE); coda_write(dev, ctx->params.framerate, CODA_CMD_ENC_SEQ_SRC_F_RATE); switch (dst_fourcc) { case V4L2_PIX_FMT_MPEG4: if (dev->devtype->product == CODA_DX6) ctx->params.codec_mode = CODADX6_MODE_ENCODE_MP4; else ctx->params.codec_mode = CODA7_MODE_ENCODE_MP4; coda_write(dev, CODA_STD_MPEG4, CODA_CMD_ENC_SEQ_COD_STD); coda_write(dev, 0, CODA_CMD_ENC_SEQ_MP4_PARA); break; case V4L2_PIX_FMT_H264: if (dev->devtype->product == CODA_DX6) ctx->params.codec_mode = CODADX6_MODE_ENCODE_H264; else ctx->params.codec_mode = CODA7_MODE_ENCODE_H264; coda_write(dev, CODA_STD_H264, CODA_CMD_ENC_SEQ_COD_STD); coda_write(dev, 0, CODA_CMD_ENC_SEQ_264_PARA); break; default: v4l2_err(v4l2_dev, "dst format (0x%08x) invalid.\n", dst_fourcc); return -EINVAL; } value = (ctx->params.slice_max_mb & CODA_SLICING_SIZE_MASK) << CODA_SLICING_SIZE_OFFSET; value |= (1 & CODA_SLICING_UNIT_MASK) << CODA_SLICING_UNIT_OFFSET; if (ctx->params.slice_mode == V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB) value |= 1 & CODA_SLICING_MODE_MASK; coda_write(dev, value, CODA_CMD_ENC_SEQ_SLICE_MODE); value = ctx->params.gop_size & CODA_GOP_SIZE_MASK; coda_write(dev, value, CODA_CMD_ENC_SEQ_GOP_SIZE); if (ctx->params.bitrate) { /* Rate control enabled */ value = (ctx->params.bitrate & CODA_RATECONTROL_BITRATE_MASK) << CODA_RATECONTROL_BITRATE_OFFSET; value |= 1 & CODA_RATECONTROL_ENABLE_MASK; } else { value = 0; } coda_write(dev, value, CODA_CMD_ENC_SEQ_RC_PARA); coda_write(dev, 0, CODA_CMD_ENC_SEQ_RC_BUF_SIZE); coda_write(dev, 0, CODA_CMD_ENC_SEQ_INTRA_REFRESH); coda_write(dev, bitstream_buf, CODA_CMD_ENC_SEQ_BB_START); coda_write(dev, bitstream_size / 1024, CODA_CMD_ENC_SEQ_BB_SIZE); /* set default gamma */ value = (CODA_DEFAULT_GAMMA & CODA_GAMMA_MASK) << CODA_GAMMA_OFFSET; coda_write(dev, value, CODA_CMD_ENC_SEQ_RC_GAMMA); value = (CODA_DEFAULT_GAMMA > 0) << CODA_OPTION_GAMMA_OFFSET; value |= (0 & CODA_OPTION_SLICEREPORT_MASK) << CODA_OPTION_SLICEREPORT_OFFSET; coda_write(dev, value, CODA_CMD_ENC_SEQ_OPTION); if (dst_fourcc == V4L2_PIX_FMT_H264) { value = (FMO_SLICE_SAVE_BUF_SIZE << 7); value |= (0 & CODA_FMOPARAM_TYPE_MASK) << CODA_FMOPARAM_TYPE_OFFSET; value |= 0 & CODA_FMOPARAM_SLICENUM_MASK; coda_write(dev, value, CODA_CMD_ENC_SEQ_FMO); } if (coda_command_sync(ctx, CODA_COMMAND_SEQ_INIT)) { v4l2_err(v4l2_dev, "CODA_COMMAND_SEQ_INIT timeout\n"); return -ETIMEDOUT; } if (coda_read(dev, CODA_RET_ENC_SEQ_SUCCESS) == 0) return -EFAULT; /* * Walk the src buffer list and let the codec know the * addresses of the pictures. */ src_vq = v4l2_m2m_get_vq(ctx->m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); for (i = 0; i < src_vq->num_buffers; i++) { u32 *p; buf = src_vq->bufs[i]; p = ctx->parabuf.vaddr; p[i * 3] = vb2_dma_contig_plane_dma_addr(buf, 0); p[i * 3 + 1] = p[i * 3] + q_data_src->width * q_data_src->height; p[i * 3 + 2] = p[i * 3 + 1] + q_data_src->width / 2 * q_data_src->height / 2; } coda_write(dev, src_vq->num_buffers, CODA_CMD_SET_FRAME_BUF_NUM); coda_write(dev, q_data_src->width, CODA_CMD_SET_FRAME_BUF_STRIDE); if (coda_command_sync(ctx, CODA_COMMAND_SET_FRAME_BUF)) { v4l2_err(v4l2_dev, "CODA_COMMAND_SET_FRAME_BUF timeout\n"); return -ETIMEDOUT; } /* Save stream headers */ buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); switch (dst_fourcc) { case V4L2_PIX_FMT_H264: /* * Get SPS in the first frame and copy it to an * intermediate buffer. */ coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0), CODA_CMD_ENC_HEADER_BB_START); coda_write(dev, bitstream_size, CODA_CMD_ENC_HEADER_BB_SIZE); coda_write(dev, CODA_HEADER_H264_SPS, CODA_CMD_ENC_HEADER_CODE); if (coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER)) { v4l2_err(v4l2_dev, "CODA_COMMAND_ENCODE_HEADER timeout\n"); return -ETIMEDOUT; } ctx->vpu_header_size[0] = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx)) - coda_read(dev, CODA_CMD_ENC_HEADER_BB_START); memcpy(&ctx->vpu_header[0][0], vb2_plane_vaddr(buf, 0), ctx->vpu_header_size[0]); /* * Get PPS in the first frame and copy it to an * intermediate buffer. */ coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0), CODA_CMD_ENC_HEADER_BB_START); coda_write(dev, bitstream_size, CODA_CMD_ENC_HEADER_BB_SIZE); coda_write(dev, CODA_HEADER_H264_PPS, CODA_CMD_ENC_HEADER_CODE); if (coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER)) { v4l2_err(v4l2_dev, "CODA_COMMAND_ENCODE_HEADER timeout\n"); return -ETIMEDOUT; } ctx->vpu_header_size[1] = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx)) - coda_read(dev, CODA_CMD_ENC_HEADER_BB_START); memcpy(&ctx->vpu_header[1][0], vb2_plane_vaddr(buf, 0), ctx->vpu_header_size[1]); ctx->vpu_header_size[2] = 0; break; case V4L2_PIX_FMT_MPEG4: /* * Get VOS in the first frame and copy it to an * intermediate buffer */ coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0), CODA_CMD_ENC_HEADER_BB_START); coda_write(dev, bitstream_size, CODA_CMD_ENC_HEADER_BB_SIZE); coda_write(dev, CODA_HEADER_MP4V_VOS, CODA_CMD_ENC_HEADER_CODE); if (coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER)) { v4l2_err(v4l2_dev, "CODA_COMMAND_ENCODE_HEADER timeout\n"); return -ETIMEDOUT; } ctx->vpu_header_size[0] = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx)) - coda_read(dev, CODA_CMD_ENC_HEADER_BB_START); memcpy(&ctx->vpu_header[0][0], vb2_plane_vaddr(buf, 0), ctx->vpu_header_size[0]); coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0), CODA_CMD_ENC_HEADER_BB_START); coda_write(dev, bitstream_size, CODA_CMD_ENC_HEADER_BB_SIZE); coda_write(dev, CODA_HEADER_MP4V_VIS, CODA_CMD_ENC_HEADER_CODE); if (coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER)) { v4l2_err(v4l2_dev, "CODA_COMMAND_ENCODE_HEADER failed\n"); return -ETIMEDOUT; } ctx->vpu_header_size[1] = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx)) - coda_read(dev, CODA_CMD_ENC_HEADER_BB_START); memcpy(&ctx->vpu_header[1][0], vb2_plane_vaddr(buf, 0), ctx->vpu_header_size[1]); coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0), CODA_CMD_ENC_HEADER_BB_START); coda_write(dev, bitstream_size, CODA_CMD_ENC_HEADER_BB_SIZE); coda_write(dev, CODA_HEADER_MP4V_VOL, CODA_CMD_ENC_HEADER_CODE); if (coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER)) { v4l2_err(v4l2_dev, "CODA_COMMAND_ENCODE_HEADER failed\n"); return -ETIMEDOUT; } ctx->vpu_header_size[2] = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx)) - coda_read(dev, CODA_CMD_ENC_HEADER_BB_START); memcpy(&ctx->vpu_header[2][0], vb2_plane_vaddr(buf, 0), ctx->vpu_header_size[2]); break; default: /* No more formats need to save headers at the moment */ break; } return 0; } static int coda_stop_streaming(struct vb2_queue *q) { struct coda_ctx *ctx = vb2_get_drv_priv(q); if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "%s: output\n", __func__); ctx->rawstreamon = 0; } else { v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "%s: capture\n", __func__); ctx->compstreamon = 0; } if (!ctx->rawstreamon && !ctx->compstreamon) { v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "%s: sent command 'SEQ_END' to coda\n", __func__); if (coda_command_sync(ctx, CODA_COMMAND_SEQ_END)) { v4l2_err(&ctx->dev->v4l2_dev, "CODA_COMMAND_SEQ_END failed\n"); return -ETIMEDOUT; } } return 0; } static struct vb2_ops coda_qops = { .queue_setup = coda_queue_setup, .buf_prepare = coda_buf_prepare, .buf_queue = coda_buf_queue, .wait_prepare = coda_wait_prepare, .wait_finish = coda_wait_finish, .start_streaming = coda_start_streaming, .stop_streaming = coda_stop_streaming, }; static int coda_s_ctrl(struct v4l2_ctrl *ctrl) { struct coda_ctx *ctx = container_of(ctrl->handler, struct coda_ctx, ctrls); v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "s_ctrl: id = %d, val = %d\n", ctrl->id, ctrl->val); switch (ctrl->id) { case V4L2_CID_MPEG_VIDEO_BITRATE: ctx->params.bitrate = ctrl->val / 1000; break; case V4L2_CID_MPEG_VIDEO_GOP_SIZE: ctx->params.gop_size = ctrl->val; break; case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP: ctx->params.h264_intra_qp = ctrl->val; break; case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP: ctx->params.h264_inter_qp = ctrl->val; break; case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP: ctx->params.mpeg4_intra_qp = ctrl->val; break; case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP: ctx->params.mpeg4_inter_qp = ctrl->val; break; case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE: ctx->params.slice_mode = ctrl->val; break; case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB: ctx->params.slice_max_mb = ctrl->val; break; case V4L2_CID_MPEG_VIDEO_HEADER_MODE: break; default: v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "Invalid control, id=%d, val=%d\n", ctrl->id, ctrl->val); return -EINVAL; } return 0; } static struct v4l2_ctrl_ops coda_ctrl_ops = { .s_ctrl = coda_s_ctrl, }; static int coda_ctrls_setup(struct coda_ctx *ctx) { v4l2_ctrl_handler_init(&ctx->ctrls, 9); v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_BITRATE, 0, 32767000, 1, 0); v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 60, 1, 16); v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP, 1, 51, 1, 25); v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP, 1, 51, 1, 25); v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP, 1, 31, 1, 2); v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP, 1, 31, 1, 2); v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE, V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB, 0, V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB); v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB, 1, 0x3fffffff, 1, 1); v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_HEADER_MODE, V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME, (1 << V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE), V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME); if (ctx->ctrls.error) { v4l2_err(&ctx->dev->v4l2_dev, "control initialization error (%d)", ctx->ctrls.error); return -EINVAL; } return v4l2_ctrl_handler_setup(&ctx->ctrls); } static int coda_queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq) { struct coda_ctx *ctx = priv; int ret; memset(src_vq, 0, sizeof(*src_vq)); src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; src_vq->io_modes = VB2_MMAP; src_vq->drv_priv = ctx; src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); src_vq->ops = &coda_qops; src_vq->mem_ops = &vb2_dma_contig_memops; ret = vb2_queue_init(src_vq); if (ret) return ret; memset(dst_vq, 0, sizeof(*dst_vq)); dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; dst_vq->io_modes = VB2_MMAP; dst_vq->drv_priv = ctx; dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); dst_vq->ops = &coda_qops; dst_vq->mem_ops = &vb2_dma_contig_memops; return vb2_queue_init(dst_vq); } static int coda_open(struct file *file) { struct coda_dev *dev = video_drvdata(file); struct coda_ctx *ctx = NULL; int ret = 0; if (dev->instances >= CODA_MAX_INSTANCES) return -EBUSY; ctx = kzalloc(sizeof *ctx, GFP_KERNEL); if (!ctx) return -ENOMEM; v4l2_fh_init(&ctx->fh, video_devdata(file)); file->private_data = &ctx->fh; v4l2_fh_add(&ctx->fh); ctx->dev = dev; set_default_params(ctx); ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &coda_queue_init); if (IS_ERR(ctx->m2m_ctx)) { int ret = PTR_ERR(ctx->m2m_ctx); v4l2_err(&dev->v4l2_dev, "%s return error (%d)\n", __func__, ret); goto err; } ret = coda_ctrls_setup(ctx); if (ret) { v4l2_err(&dev->v4l2_dev, "failed to setup coda controls\n"); goto err; } ctx->fh.ctrl_handler = &ctx->ctrls; ctx->parabuf.vaddr = dma_alloc_coherent(&dev->plat_dev->dev, CODA_PARA_BUF_SIZE, &ctx->parabuf.paddr, GFP_KERNEL); if (!ctx->parabuf.vaddr) { v4l2_err(&dev->v4l2_dev, "failed to allocate parabuf"); ret = -ENOMEM; goto err; } coda_lock(ctx); ctx->idx = dev->instances++; coda_unlock(ctx); clk_prepare_enable(dev->clk_per); clk_prepare_enable(dev->clk_ahb); v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Created instance %d (%p)\n", ctx->idx, ctx); return 0; err: v4l2_fh_del(&ctx->fh); v4l2_fh_exit(&ctx->fh); kfree(ctx); return ret; } static int coda_release(struct file *file) { struct coda_dev *dev = video_drvdata(file); struct coda_ctx *ctx = fh_to_ctx(file->private_data); v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Releasing instance %p\n", ctx); coda_lock(ctx); dev->instances--; coda_unlock(ctx); dma_free_coherent(&dev->plat_dev->dev, CODA_PARA_BUF_SIZE, ctx->parabuf.vaddr, ctx->parabuf.paddr); v4l2_m2m_ctx_release(ctx->m2m_ctx); v4l2_ctrl_handler_free(&ctx->ctrls); clk_disable_unprepare(dev->clk_per); clk_disable_unprepare(dev->clk_ahb); v4l2_fh_del(&ctx->fh); v4l2_fh_exit(&ctx->fh); kfree(ctx); return 0; } static unsigned int coda_poll(struct file *file, struct poll_table_struct *wait) { struct coda_ctx *ctx = fh_to_ctx(file->private_data); int ret; coda_lock(ctx); ret = v4l2_m2m_poll(file, ctx->m2m_ctx, wait); coda_unlock(ctx); return ret; } static int coda_mmap(struct file *file, struct vm_area_struct *vma) { struct coda_ctx *ctx = fh_to_ctx(file->private_data); return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma); } static const struct v4l2_file_operations coda_fops = { .owner = THIS_MODULE, .open = coda_open, .release = coda_release, .poll = coda_poll, .unlocked_ioctl = video_ioctl2, .mmap = coda_mmap, }; static irqreturn_t coda_irq_handler(int irq, void *data) { struct vb2_buffer *src_buf, *dst_buf, *tmp_buf; struct coda_dev *dev = data; u32 wr_ptr, start_ptr; struct coda_ctx *ctx; /* read status register to attend the IRQ */ coda_read(dev, CODA_REG_BIT_INT_STATUS); coda_write(dev, CODA_REG_BIT_INT_CLEAR_SET, CODA_REG_BIT_INT_CLEAR); ctx = v4l2_m2m_get_curr_priv(dev->m2m_dev); if (ctx == NULL) { v4l2_err(&dev->v4l2_dev, "Instance released before the end of transaction\n"); return IRQ_HANDLED; } if (ctx->aborting) { v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "task has been aborted\n"); return IRQ_HANDLED; } if (coda_isbusy(ctx->dev)) { v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "coda is still busy!!!!\n"); return IRQ_NONE; } src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx); dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); /* Get results from the coda */ coda_read(dev, CODA_RET_ENC_PIC_TYPE); start_ptr = coda_read(dev, CODA_CMD_ENC_PIC_BB_START); wr_ptr = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx)); /* Calculate bytesused field */ if (dst_buf->v4l2_buf.sequence == 0) { dst_buf->v4l2_planes[0].bytesused = (wr_ptr - start_ptr) + ctx->vpu_header_size[0] + ctx->vpu_header_size[1] + ctx->vpu_header_size[2]; } else { dst_buf->v4l2_planes[0].bytesused = (wr_ptr - start_ptr); } v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "frame size = %u\n", wr_ptr - start_ptr); coda_read(dev, CODA_RET_ENC_PIC_SLICE_NUM); coda_read(dev, CODA_RET_ENC_PIC_FLAG); if (src_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) { dst_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_KEYFRAME; dst_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_PFRAME; } else { dst_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_PFRAME; dst_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_KEYFRAME; } /* Free previous reference picture if available */ if (ctx->reference) { v4l2_m2m_buf_done(ctx->reference, VB2_BUF_STATE_DONE); ctx->reference = NULL; } /* * For the last frame of the gop we don't need to save * a reference picture. */ v4l2_m2m_dst_buf_remove(ctx->m2m_ctx); tmp_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx); if (ctx->gopcounter == 0) v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE); else ctx->reference = tmp_buf; v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE); ctx->gopcounter--; if (ctx->gopcounter < 0) ctx->gopcounter = ctx->params.gop_size - 1; v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "job finished: encoding frame (%d) (%s)\n", dst_buf->v4l2_buf.sequence, (dst_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) ? "KEYFRAME" : "PFRAME"); v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->m2m_ctx); return IRQ_HANDLED; } static u32 coda_supported_firmwares[] = { CODA_FIRMWARE_VERNUM(CODA_DX6, 2, 2, 5), }; static bool coda_firmware_supported(u32 vernum) { int i; for (i = 0; i < ARRAY_SIZE(coda_supported_firmwares); i++) if (vernum == coda_supported_firmwares[i]) return true; return false; } static char *coda_product_name(int product) { static char buf[9]; switch (product) { case CODA_DX6: return "CodaDx6"; default: snprintf(buf, sizeof(buf), "(0x%04x)", product); return buf; } } static int coda_hw_init(struct coda_dev *dev, const struct firmware *fw) { u16 product, major, minor, release; u32 data; u16 *p; int i; clk_prepare_enable(dev->clk_per); clk_prepare_enable(dev->clk_ahb); /* Copy the whole firmware image to the code buffer */ memcpy(dev->codebuf.vaddr, fw->data, fw->size); /* * Copy the first CODA_ISRAM_SIZE in the internal SRAM. * This memory seems to be big-endian here, which is weird, since * the internal ARM processor of the coda is little endian. * Data in this SRAM survives a reboot. */ p = (u16 *)fw->data; for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) { data = CODA_DOWN_ADDRESS_SET(i) | CODA_DOWN_DATA_SET(p[i ^ 1]); coda_write(dev, data, CODA_REG_BIT_CODE_DOWN); } release_firmware(fw); /* Tell the BIT where to find everything it needs */ coda_write(dev, dev->workbuf.paddr, CODA_REG_BIT_WORK_BUF_ADDR); coda_write(dev, dev->codebuf.paddr, CODA_REG_BIT_CODE_BUF_ADDR); coda_write(dev, 0, CODA_REG_BIT_CODE_RUN); /* Set default values */ switch (dev->devtype->product) { case CODA_DX6: coda_write(dev, CODADX6_STREAM_BUF_PIC_FLUSH, CODA_REG_BIT_STREAM_CTRL); break; default: coda_write(dev, CODA7_STREAM_BUF_PIC_FLUSH, CODA_REG_BIT_STREAM_CTRL); } coda_write(dev, 0, CODA_REG_BIT_FRAME_MEM_CTRL); coda_write(dev, CODA_INT_INTERRUPT_ENABLE, CODA_REG_BIT_INT_ENABLE); /* Reset VPU and start processor */ data = coda_read(dev, CODA_REG_BIT_CODE_RESET); data |= CODA_REG_RESET_ENABLE; coda_write(dev, data, CODA_REG_BIT_CODE_RESET); udelay(10); data &= ~CODA_REG_RESET_ENABLE; coda_write(dev, data, CODA_REG_BIT_CODE_RESET); coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN); /* Load firmware */ coda_write(dev, 0, CODA_CMD_FIRMWARE_VERNUM); coda_write(dev, CODA_REG_BIT_BUSY_FLAG, CODA_REG_BIT_BUSY); coda_write(dev, 0, CODA_REG_BIT_RUN_INDEX); coda_write(dev, 0, CODA_REG_BIT_RUN_COD_STD); coda_write(dev, CODA_COMMAND_FIRMWARE_GET, CODA_REG_BIT_RUN_COMMAND); if (coda_wait_timeout(dev)) { clk_disable_unprepare(dev->clk_per); clk_disable_unprepare(dev->clk_ahb); v4l2_err(&dev->v4l2_dev, "firmware get command error\n"); return -EIO; } /* Check we are compatible with the loaded firmware */ data = coda_read(dev, CODA_CMD_FIRMWARE_VERNUM); product = CODA_FIRMWARE_PRODUCT(data); major = CODA_FIRMWARE_MAJOR(data); minor = CODA_FIRMWARE_MINOR(data); release = CODA_FIRMWARE_RELEASE(data); clk_disable_unprepare(dev->clk_per); clk_disable_unprepare(dev->clk_ahb); if (product != dev->devtype->product) { v4l2_err(&dev->v4l2_dev, "Wrong firmware. Hw: %s, Fw: %s," " Version: %u.%u.%u\n", coda_product_name(dev->devtype->product), coda_product_name(product), major, minor, release); return -EINVAL; } v4l2_info(&dev->v4l2_dev, "Initialized %s.\n", coda_product_name(product)); if (coda_firmware_supported(data)) { v4l2_info(&dev->v4l2_dev, "Firmware version: %u.%u.%u\n", major, minor, release); } else { v4l2_warn(&dev->v4l2_dev, "Unsupported firmware version: " "%u.%u.%u\n", major, minor, release); } return 0; } static void coda_fw_callback(const struct firmware *fw, void *context) { struct coda_dev *dev = context; struct platform_device *pdev = dev->plat_dev; int ret; if (!fw) { v4l2_err(&dev->v4l2_dev, "firmware request failed\n"); return; } /* allocate auxiliary per-device code buffer for the BIT processor */ dev->codebuf.size = fw->size; dev->codebuf.vaddr = dma_alloc_coherent(&pdev->dev, fw->size, &dev->codebuf.paddr, GFP_KERNEL); if (!dev->codebuf.vaddr) { dev_err(&pdev->dev, "failed to allocate code buffer\n"); return; } ret = coda_hw_init(dev, fw); if (ret) { v4l2_err(&dev->v4l2_dev, "HW initialization failed\n"); return; } dev->vfd.fops = &coda_fops, dev->vfd.ioctl_ops = &coda_ioctl_ops; dev->vfd.release = video_device_release_empty, dev->vfd.lock = &dev->dev_mutex; dev->vfd.v4l2_dev = &dev->v4l2_dev; snprintf(dev->vfd.name, sizeof(dev->vfd.name), "%s", CODA_NAME); video_set_drvdata(&dev->vfd, dev); dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); if (IS_ERR(dev->alloc_ctx)) { v4l2_err(&dev->v4l2_dev, "Failed to alloc vb2 context\n"); return; } dev->m2m_dev = v4l2_m2m_init(&coda_m2m_ops); if (IS_ERR(dev->m2m_dev)) { v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n"); goto rel_ctx; } ret = video_register_device(&dev->vfd, VFL_TYPE_GRABBER, 0); if (ret) { v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); goto rel_m2m; } v4l2_info(&dev->v4l2_dev, "codec registered as /dev/video%d\n", dev->vfd.num); return; rel_m2m: v4l2_m2m_release(dev->m2m_dev); rel_ctx: vb2_dma_contig_cleanup_ctx(dev->alloc_ctx); } static int coda_firmware_request(struct coda_dev *dev) { char *fw = dev->devtype->firmware; dev_dbg(&dev->plat_dev->dev, "requesting firmware '%s' for %s\n", fw, coda_product_name(dev->devtype->product)); return request_firmware_nowait(THIS_MODULE, true, fw, &dev->plat_dev->dev, GFP_KERNEL, dev, coda_fw_callback); } enum coda_platform { CODA_IMX27, }; static const struct coda_devtype coda_devdata[] = { [CODA_IMX27] = { .firmware = "v4l-codadx6-imx27.bin", .product = CODA_DX6, .formats = codadx6_formats, .num_formats = ARRAY_SIZE(codadx6_formats), }, }; static struct platform_device_id coda_platform_ids[] = { { .name = "coda-imx27", .driver_data = CODA_IMX27 }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(platform, coda_platform_ids); #ifdef CONFIG_OF static const struct of_device_id coda_dt_ids[] = { { .compatible = "fsl,imx27-vpu", .data = &coda_platform_ids[CODA_IMX27] }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, coda_dt_ids); #endif static int __devinit coda_probe(struct platform_device *pdev) { const struct of_device_id *of_id = of_match_device(of_match_ptr(coda_dt_ids), &pdev->dev); const struct platform_device_id *pdev_id; struct coda_dev *dev; struct resource *res; int ret, irq; dev = devm_kzalloc(&pdev->dev, sizeof *dev, GFP_KERNEL); if (!dev) { dev_err(&pdev->dev, "Not enough memory for %s\n", CODA_NAME); return -ENOMEM; } spin_lock_init(&dev->irqlock); dev->plat_dev = pdev; dev->clk_per = devm_clk_get(&pdev->dev, "per"); if (IS_ERR(dev->clk_per)) { dev_err(&pdev->dev, "Could not get per clock\n"); return PTR_ERR(dev->clk_per); } dev->clk_ahb = devm_clk_get(&pdev->dev, "ahb"); if (IS_ERR(dev->clk_ahb)) { dev_err(&pdev->dev, "Could not get ahb clock\n"); return PTR_ERR(dev->clk_ahb); } /* Get memory for physical registers */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (res == NULL) { dev_err(&pdev->dev, "failed to get memory region resource\n"); return -ENOENT; } if (devm_request_mem_region(&pdev->dev, res->start, resource_size(res), CODA_NAME) == NULL) { dev_err(&pdev->dev, "failed to request memory region\n"); return -ENOENT; } dev->regs_base = devm_ioremap(&pdev->dev, res->start, resource_size(res)); if (!dev->regs_base) { dev_err(&pdev->dev, "failed to ioremap address region\n"); return -ENOENT; } /* IRQ */ irq = platform_get_irq(pdev, 0); if (irq < 0) { dev_err(&pdev->dev, "failed to get irq resource\n"); return -ENOENT; } if (devm_request_irq(&pdev->dev, irq, coda_irq_handler, 0, CODA_NAME, dev) < 0) { dev_err(&pdev->dev, "failed to request irq\n"); return -ENOENT; } ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); if (ret) return ret; mutex_init(&dev->dev_mutex); pdev_id = of_id ? of_id->data : platform_get_device_id(pdev); if (of_id) { dev->devtype = of_id->data; } else if (pdev_id) { dev->devtype = &coda_devdata[pdev_id->driver_data]; } else { v4l2_device_unregister(&dev->v4l2_dev); return -EINVAL; } /* allocate auxiliary per-device buffers for the BIT processor */ switch (dev->devtype->product) { case CODA_DX6: dev->workbuf.size = CODADX6_WORK_BUF_SIZE; break; default: dev->workbuf.size = CODA7_WORK_BUF_SIZE; } dev->workbuf.vaddr = dma_alloc_coherent(&pdev->dev, dev->workbuf.size, &dev->workbuf.paddr, GFP_KERNEL); if (!dev->workbuf.vaddr) { dev_err(&pdev->dev, "failed to allocate work buffer\n"); v4l2_device_unregister(&dev->v4l2_dev); return -ENOMEM; } platform_set_drvdata(pdev, dev); return coda_firmware_request(dev); } static int coda_remove(struct platform_device *pdev) { struct coda_dev *dev = platform_get_drvdata(pdev); video_unregister_device(&dev->vfd); if (dev->m2m_dev) v4l2_m2m_release(dev->m2m_dev); if (dev->alloc_ctx) vb2_dma_contig_cleanup_ctx(dev->alloc_ctx); v4l2_device_unregister(&dev->v4l2_dev); if (dev->codebuf.vaddr) dma_free_coherent(&pdev->dev, dev->codebuf.size, &dev->codebuf.vaddr, dev->codebuf.paddr); if (dev->workbuf.vaddr) dma_free_coherent(&pdev->dev, dev->workbuf.size, &dev->workbuf.vaddr, dev->workbuf.paddr); return 0; } static struct platform_driver coda_driver = { .probe = coda_probe, .remove = __devexit_p(coda_remove), .driver = { .name = CODA_NAME, .owner = THIS_MODULE, .of_match_table = of_match_ptr(coda_dt_ids), }, .id_table = coda_platform_ids, }; module_platform_driver(coda_driver); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Javier Martin "); MODULE_DESCRIPTION("Coda multi-standard codec V4L2 driver");