diff options
Diffstat (limited to 'drivers/media/platform/ti-vpe/cal-video.c')
| -rw-r--r-- | drivers/media/platform/ti-vpe/cal-video.c | 966 |
1 files changed, 0 insertions, 966 deletions
diff --git a/drivers/media/platform/ti-vpe/cal-video.c b/drivers/media/platform/ti-vpe/cal-video.c deleted file mode 100644 index 15fb5360cf13..000000000000 --- a/drivers/media/platform/ti-vpe/cal-video.c +++ /dev/null @@ -1,966 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * TI Camera Access Layer (CAL) - Video Device - * - * Copyright (c) 2015-2020 Texas Instruments Inc. - * - * Authors: - * Benoit Parrot <bparrot@ti.com> - * Laurent Pinchart <laurent.pinchart@ideasonboard.com> - */ - -#include <linux/ioctl.h> -#include <linux/pm_runtime.h> -#include <linux/videodev2.h> - -#include <media/media-device.h> -#include <media/v4l2-common.h> -#include <media/v4l2-ctrls.h> -#include <media/v4l2-device.h> -#include <media/v4l2-event.h> -#include <media/v4l2-fh.h> -#include <media/v4l2-ioctl.h> -#include <media/videobuf2-core.h> -#include <media/videobuf2-dma-contig.h> - -#include "cal.h" - -/* Print Four-character-code (FOURCC) */ -static char *fourcc_to_str(u32 fmt) -{ - static char code[5]; - - code[0] = (unsigned char)(fmt & 0xff); - code[1] = (unsigned char)((fmt >> 8) & 0xff); - code[2] = (unsigned char)((fmt >> 16) & 0xff); - code[3] = (unsigned char)((fmt >> 24) & 0xff); - code[4] = '\0'; - - return code; -} - -/* ------------------------------------------------------------------ - * V4L2 Common IOCTLs - * ------------------------------------------------------------------ - */ - -static int cal_querycap(struct file *file, void *priv, - struct v4l2_capability *cap) -{ - struct cal_ctx *ctx = video_drvdata(file); - - strscpy(cap->driver, CAL_MODULE_NAME, sizeof(cap->driver)); - strscpy(cap->card, CAL_MODULE_NAME, sizeof(cap->card)); - - snprintf(cap->bus_info, sizeof(cap->bus_info), - "platform:%s", dev_name(ctx->cal->dev)); - return 0; -} - -static int cal_g_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct cal_ctx *ctx = video_drvdata(file); - - *f = ctx->v_fmt; - - return 0; -} - -/* ------------------------------------------------------------------ - * V4L2 Video Node Centric IOCTLs - * ------------------------------------------------------------------ - */ - -static const struct cal_format_info *find_format_by_pix(struct cal_ctx *ctx, - u32 pixelformat) -{ - const struct cal_format_info *fmtinfo; - unsigned int k; - - for (k = 0; k < ctx->num_active_fmt; k++) { - fmtinfo = ctx->active_fmt[k]; - if (fmtinfo->fourcc == pixelformat) - return fmtinfo; - } - - return NULL; -} - -static const struct cal_format_info *find_format_by_code(struct cal_ctx *ctx, - u32 code) -{ - const struct cal_format_info *fmtinfo; - unsigned int k; - - for (k = 0; k < ctx->num_active_fmt; k++) { - fmtinfo = ctx->active_fmt[k]; - if (fmtinfo->code == code) - return fmtinfo; - } - - return NULL; -} - -static int cal_enum_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_fmtdesc *f) -{ - struct cal_ctx *ctx = video_drvdata(file); - const struct cal_format_info *fmtinfo; - - if (f->index >= ctx->num_active_fmt) - return -EINVAL; - - fmtinfo = ctx->active_fmt[f->index]; - - f->pixelformat = fmtinfo->fourcc; - f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - return 0; -} - -static int __subdev_get_format(struct cal_ctx *ctx, - struct v4l2_mbus_framefmt *fmt) -{ - struct v4l2_subdev_format sd_fmt; - struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format; - int ret; - - sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; - sd_fmt.pad = 0; - - ret = v4l2_subdev_call(ctx->phy->sensor, pad, get_fmt, NULL, &sd_fmt); - if (ret) - return ret; - - *fmt = *mbus_fmt; - - ctx_dbg(1, ctx, "%s %dx%d code:%04X\n", __func__, - fmt->width, fmt->height, fmt->code); - - return 0; -} - -static int __subdev_set_format(struct cal_ctx *ctx, - struct v4l2_mbus_framefmt *fmt) -{ - struct v4l2_subdev_format sd_fmt; - struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format; - int ret; - - sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; - sd_fmt.pad = 0; - *mbus_fmt = *fmt; - - ret = v4l2_subdev_call(ctx->phy->sensor, pad, set_fmt, NULL, &sd_fmt); - if (ret) - return ret; - - ctx_dbg(1, ctx, "%s %dx%d code:%04X\n", __func__, - fmt->width, fmt->height, fmt->code); - - return 0; -} - -static void cal_calc_format_size(struct cal_ctx *ctx, - const struct cal_format_info *fmtinfo, - struct v4l2_format *f) -{ - u32 bpl, max_width; - - /* - * Maximum width is bound by the DMA max width in bytes. - * We need to recalculate the actual maxi width depending on the - * number of bytes per pixels required. - */ - max_width = CAL_MAX_WIDTH_BYTES / (ALIGN(fmtinfo->bpp, 8) >> 3); - v4l_bound_align_image(&f->fmt.pix.width, 48, max_width, 2, - &f->fmt.pix.height, 32, CAL_MAX_HEIGHT_LINES, - 0, 0); - - bpl = (f->fmt.pix.width * ALIGN(fmtinfo->bpp, 8)) >> 3; - f->fmt.pix.bytesperline = ALIGN(bpl, 16); - - f->fmt.pix.sizeimage = f->fmt.pix.height * - f->fmt.pix.bytesperline; - - ctx_dbg(3, ctx, "%s: fourcc: %s size: %dx%d bpl:%d img_size:%d\n", - __func__, fourcc_to_str(f->fmt.pix.pixelformat), - f->fmt.pix.width, f->fmt.pix.height, - f->fmt.pix.bytesperline, f->fmt.pix.sizeimage); -} - -static int cal_try_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct cal_ctx *ctx = video_drvdata(file); - const struct cal_format_info *fmtinfo; - struct v4l2_subdev_frame_size_enum fse; - int ret, found; - - fmtinfo = find_format_by_pix(ctx, f->fmt.pix.pixelformat); - if (!fmtinfo) { - ctx_dbg(3, ctx, "Fourcc format (0x%08x) not found.\n", - f->fmt.pix.pixelformat); - - /* Just get the first one enumerated */ - fmtinfo = ctx->active_fmt[0]; - f->fmt.pix.pixelformat = fmtinfo->fourcc; - } - - f->fmt.pix.field = ctx->v_fmt.fmt.pix.field; - - /* check for/find a valid width/height */ - ret = 0; - found = false; - fse.pad = 0; - fse.code = fmtinfo->code; - fse.which = V4L2_SUBDEV_FORMAT_ACTIVE; - for (fse.index = 0; ; fse.index++) { - ret = v4l2_subdev_call(ctx->phy->sensor, pad, enum_frame_size, - NULL, &fse); - if (ret) - break; - - if ((f->fmt.pix.width == fse.max_width) && - (f->fmt.pix.height == fse.max_height)) { - found = true; - break; - } else if ((f->fmt.pix.width >= fse.min_width) && - (f->fmt.pix.width <= fse.max_width) && - (f->fmt.pix.height >= fse.min_height) && - (f->fmt.pix.height <= fse.max_height)) { - found = true; - break; - } - } - - if (!found) { - /* use existing values as default */ - f->fmt.pix.width = ctx->v_fmt.fmt.pix.width; - f->fmt.pix.height = ctx->v_fmt.fmt.pix.height; - } - - /* - * Use current colorspace for now, it will get - * updated properly during s_fmt - */ - f->fmt.pix.colorspace = ctx->v_fmt.fmt.pix.colorspace; - cal_calc_format_size(ctx, fmtinfo, f); - return 0; -} - -static int cal_s_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct cal_ctx *ctx = video_drvdata(file); - struct vb2_queue *q = &ctx->vb_vidq; - struct v4l2_subdev_format sd_fmt = { - .which = V4L2_SUBDEV_FORMAT_ACTIVE, - .pad = CAL_CAMERARX_PAD_SINK, - }; - const struct cal_format_info *fmtinfo; - int ret; - - if (vb2_is_busy(q)) { - ctx_dbg(3, ctx, "%s device busy\n", __func__); - return -EBUSY; - } - - ret = cal_try_fmt_vid_cap(file, priv, f); - if (ret < 0) - return ret; - - fmtinfo = find_format_by_pix(ctx, f->fmt.pix.pixelformat); - - v4l2_fill_mbus_format(&sd_fmt.format, &f->fmt.pix, fmtinfo->code); - - ret = __subdev_set_format(ctx, &sd_fmt.format); - if (ret) - return ret; - - /* Just double check nothing has gone wrong */ - if (sd_fmt.format.code != fmtinfo->code) { - ctx_dbg(3, ctx, - "%s subdev changed format on us, this should not happen\n", - __func__); - return -EINVAL; - } - - v4l2_fill_pix_format(&ctx->v_fmt.fmt.pix, &sd_fmt.format); - ctx->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - ctx->v_fmt.fmt.pix.pixelformat = fmtinfo->fourcc; - ctx->v_fmt.fmt.pix.field = sd_fmt.format.field; - cal_calc_format_size(ctx, fmtinfo, &ctx->v_fmt); - - v4l2_subdev_call(&ctx->phy->subdev, pad, set_fmt, NULL, &sd_fmt); - - ctx->fmtinfo = fmtinfo; - *f = ctx->v_fmt; - - return 0; -} - -static int cal_enum_framesizes(struct file *file, void *fh, - struct v4l2_frmsizeenum *fsize) -{ - struct cal_ctx *ctx = video_drvdata(file); - const struct cal_format_info *fmtinfo; - struct v4l2_subdev_frame_size_enum fse; - int ret; - - /* check for valid format */ - fmtinfo = find_format_by_pix(ctx, fsize->pixel_format); - if (!fmtinfo) { - ctx_dbg(3, ctx, "Invalid pixel code: %x\n", - fsize->pixel_format); - return -EINVAL; - } - - fse.index = fsize->index; - fse.pad = 0; - fse.code = fmtinfo->code; - fse.which = V4L2_SUBDEV_FORMAT_ACTIVE; - - ret = v4l2_subdev_call(ctx->phy->sensor, pad, enum_frame_size, NULL, - &fse); - if (ret) - return ret; - - ctx_dbg(1, ctx, "%s: index: %d code: %x W:[%d,%d] H:[%d,%d]\n", - __func__, fse.index, fse.code, fse.min_width, fse.max_width, - fse.min_height, fse.max_height); - - fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; - fsize->discrete.width = fse.max_width; - fsize->discrete.height = fse.max_height; - - return 0; -} - -static int cal_enum_input(struct file *file, void *priv, - struct v4l2_input *inp) -{ - if (inp->index > 0) - return -EINVAL; - - inp->type = V4L2_INPUT_TYPE_CAMERA; - sprintf(inp->name, "Camera %u", inp->index); - return 0; -} - -static int cal_g_input(struct file *file, void *priv, unsigned int *i) -{ - *i = 0; - return 0; -} - -static int cal_s_input(struct file *file, void *priv, unsigned int i) -{ - return i > 0 ? -EINVAL : 0; -} - -/* timeperframe is arbitrary and continuous */ -static int cal_enum_frameintervals(struct file *file, void *priv, - struct v4l2_frmivalenum *fival) -{ - struct cal_ctx *ctx = video_drvdata(file); - const struct cal_format_info *fmtinfo; - struct v4l2_subdev_frame_interval_enum fie = { - .index = fival->index, - .width = fival->width, - .height = fival->height, - .which = V4L2_SUBDEV_FORMAT_ACTIVE, - }; - int ret; - - fmtinfo = find_format_by_pix(ctx, fival->pixel_format); - if (!fmtinfo) - return -EINVAL; - - fie.code = fmtinfo->code; - ret = v4l2_subdev_call(ctx->phy->sensor, pad, enum_frame_interval, - NULL, &fie); - if (ret) - return ret; - fival->type = V4L2_FRMIVAL_TYPE_DISCRETE; - fival->discrete = fie.interval; - - return 0; -} - -static const struct v4l2_ioctl_ops cal_ioctl_video_ops = { - .vidioc_querycap = cal_querycap, - .vidioc_enum_fmt_vid_cap = cal_enum_fmt_vid_cap, - .vidioc_g_fmt_vid_cap = cal_g_fmt_vid_cap, - .vidioc_try_fmt_vid_cap = cal_try_fmt_vid_cap, - .vidioc_s_fmt_vid_cap = cal_s_fmt_vid_cap, - .vidioc_enum_framesizes = cal_enum_framesizes, - .vidioc_reqbufs = vb2_ioctl_reqbufs, - .vidioc_create_bufs = vb2_ioctl_create_bufs, - .vidioc_prepare_buf = vb2_ioctl_prepare_buf, - .vidioc_querybuf = vb2_ioctl_querybuf, - .vidioc_qbuf = vb2_ioctl_qbuf, - .vidioc_dqbuf = vb2_ioctl_dqbuf, - .vidioc_expbuf = vb2_ioctl_expbuf, - .vidioc_enum_input = cal_enum_input, - .vidioc_g_input = cal_g_input, - .vidioc_s_input = cal_s_input, - .vidioc_enum_frameintervals = cal_enum_frameintervals, - .vidioc_streamon = vb2_ioctl_streamon, - .vidioc_streamoff = vb2_ioctl_streamoff, - .vidioc_log_status = v4l2_ctrl_log_status, - .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, - .vidioc_unsubscribe_event = v4l2_event_unsubscribe, -}; - -/* ------------------------------------------------------------------ - * V4L2 Media Controller Centric IOCTLs - * ------------------------------------------------------------------ - */ - -static int cal_mc_enum_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_fmtdesc *f) -{ - if (f->index >= cal_num_formats) - return -EINVAL; - - f->pixelformat = cal_formats[f->index].fourcc; - f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - - return 0; -} - -static void cal_mc_try_fmt(struct cal_ctx *ctx, struct v4l2_format *f, - const struct cal_format_info **info) -{ - struct v4l2_pix_format *format = &f->fmt.pix; - const struct cal_format_info *fmtinfo; - unsigned int bpp; - - /* - * Default to the first format if the requested pixel format code isn't - * supported. - */ - fmtinfo = cal_format_by_fourcc(f->fmt.pix.pixelformat); - if (!fmtinfo) - fmtinfo = &cal_formats[0]; - - /* - * Clamp the size, update the pixel format. The field and colorspace are - * accepted as-is, except for V4L2_FIELD_ANY that is turned into - * V4L2_FIELD_NONE. - */ - bpp = ALIGN(fmtinfo->bpp, 8); - - format->width = clamp_t(unsigned int, format->width, - CAL_MIN_WIDTH_BYTES * 8 / bpp, - CAL_MAX_WIDTH_BYTES * 8 / bpp); - format->height = clamp_t(unsigned int, format->height, - CAL_MIN_HEIGHT_LINES, CAL_MAX_HEIGHT_LINES); - format->pixelformat = fmtinfo->fourcc; - - if (format->field == V4L2_FIELD_ANY) - format->field = V4L2_FIELD_NONE; - - /* - * Calculate the number of bytes per line and the image size. The - * hardware stores the stride as a number of 16 bytes words, in a - * signed 15-bit value. Only 14 bits are thus usable. - */ - format->bytesperline = ALIGN(clamp(format->bytesperline, - format->width * bpp / 8, - ((1U << 14) - 1) * 16), 16); - - format->sizeimage = format->height * format->bytesperline; - - format->colorspace = ctx->v_fmt.fmt.pix.colorspace; - - if (info) - *info = fmtinfo; - - ctx_dbg(3, ctx, "%s: %s %ux%u (bytesperline %u sizeimage %u)\n", - __func__, fourcc_to_str(format->pixelformat), - format->width, format->height, - format->bytesperline, format->sizeimage); -} - -static int cal_mc_try_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct cal_ctx *ctx = video_drvdata(file); - - cal_mc_try_fmt(ctx, f, NULL); - return 0; -} - -static int cal_mc_s_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct cal_ctx *ctx = video_drvdata(file); - const struct cal_format_info *fmtinfo; - - if (vb2_is_busy(&ctx->vb_vidq)) { - ctx_dbg(3, ctx, "%s device busy\n", __func__); - return -EBUSY; - } - - cal_mc_try_fmt(ctx, f, &fmtinfo); - - ctx->v_fmt = *f; - ctx->fmtinfo = fmtinfo; - - return 0; -} - -static int cal_mc_enum_framesizes(struct file *file, void *fh, - struct v4l2_frmsizeenum *fsize) -{ - struct cal_ctx *ctx = video_drvdata(file); - const struct cal_format_info *fmtinfo; - unsigned int bpp; - - if (fsize->index > 0) - return -EINVAL; - - fmtinfo = cal_format_by_fourcc(fsize->pixel_format); - if (!fmtinfo) { - ctx_dbg(3, ctx, "Invalid pixel format 0x%08x\n", - fsize->pixel_format); - return -EINVAL; - } - - bpp = ALIGN(fmtinfo->bpp, 8); - - fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; - fsize->stepwise.min_width = CAL_MIN_WIDTH_BYTES * 8 / bpp; - fsize->stepwise.max_width = CAL_MAX_WIDTH_BYTES * 8 / bpp; - fsize->stepwise.step_width = 64 / bpp; - fsize->stepwise.min_height = CAL_MIN_HEIGHT_LINES; - fsize->stepwise.max_height = CAL_MAX_HEIGHT_LINES; - fsize->stepwise.step_height = 1; - - return 0; -} - -static const struct v4l2_ioctl_ops cal_ioctl_mc_ops = { - .vidioc_querycap = cal_querycap, - .vidioc_enum_fmt_vid_cap = cal_mc_enum_fmt_vid_cap, - .vidioc_g_fmt_vid_cap = cal_g_fmt_vid_cap, - .vidioc_try_fmt_vid_cap = cal_mc_try_fmt_vid_cap, - .vidioc_s_fmt_vid_cap = cal_mc_s_fmt_vid_cap, - .vidioc_enum_framesizes = cal_mc_enum_framesizes, - .vidioc_reqbufs = vb2_ioctl_reqbufs, - .vidioc_create_bufs = vb2_ioctl_create_bufs, - .vidioc_prepare_buf = vb2_ioctl_prepare_buf, - .vidioc_querybuf = vb2_ioctl_querybuf, - .vidioc_qbuf = vb2_ioctl_qbuf, - .vidioc_dqbuf = vb2_ioctl_dqbuf, - .vidioc_expbuf = vb2_ioctl_expbuf, - .vidioc_streamon = vb2_ioctl_streamon, - .vidioc_streamoff = vb2_ioctl_streamoff, - .vidioc_log_status = v4l2_ctrl_log_status, -}; - -/* ------------------------------------------------------------------ - * videobuf2 Common Operations - * ------------------------------------------------------------------ - */ - -static int cal_queue_setup(struct vb2_queue *vq, - unsigned int *nbuffers, unsigned int *nplanes, - unsigned int sizes[], struct device *alloc_devs[]) -{ - struct cal_ctx *ctx = vb2_get_drv_priv(vq); - unsigned int size = ctx->v_fmt.fmt.pix.sizeimage; - - if (vq->num_buffers + *nbuffers < 3) - *nbuffers = 3 - vq->num_buffers; - - if (*nplanes) { - if (sizes[0] < size) - return -EINVAL; - size = sizes[0]; - } - - *nplanes = 1; - sizes[0] = size; - - ctx_dbg(3, ctx, "nbuffers=%d, size=%d\n", *nbuffers, sizes[0]); - - return 0; -} - -static int cal_buffer_prepare(struct vb2_buffer *vb) -{ - struct cal_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); - struct cal_buffer *buf = container_of(vb, struct cal_buffer, - vb.vb2_buf); - unsigned long size; - - size = ctx->v_fmt.fmt.pix.sizeimage; - if (vb2_plane_size(vb, 0) < size) { - ctx_err(ctx, - "data will not fit into plane (%lu < %lu)\n", - vb2_plane_size(vb, 0), size); - return -EINVAL; - } - - vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size); - return 0; -} - -static void cal_buffer_queue(struct vb2_buffer *vb) -{ - struct cal_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); - struct cal_buffer *buf = container_of(vb, struct cal_buffer, - vb.vb2_buf); - unsigned long flags; - - /* recheck locking */ - spin_lock_irqsave(&ctx->dma.lock, flags); - list_add_tail(&buf->list, &ctx->dma.queue); - spin_unlock_irqrestore(&ctx->dma.lock, flags); -} - -static void cal_release_buffers(struct cal_ctx *ctx, - enum vb2_buffer_state state) -{ - struct cal_buffer *buf, *tmp; - - /* Release all queued buffers. */ - spin_lock_irq(&ctx->dma.lock); - - list_for_each_entry_safe(buf, tmp, &ctx->dma.queue, list) { - list_del(&buf->list); - vb2_buffer_done(&buf->vb.vb2_buf, state); - } - - if (ctx->dma.pending) { - vb2_buffer_done(&ctx->dma.pending->vb.vb2_buf, state); - ctx->dma.pending = NULL; - } - - if (ctx->dma.active) { - vb2_buffer_done(&ctx->dma.active->vb.vb2_buf, state); - ctx->dma.active = NULL; - } - - spin_unlock_irq(&ctx->dma.lock); -} - -/* ------------------------------------------------------------------ - * videobuf2 Operations - * ------------------------------------------------------------------ - */ - -static int cal_video_check_format(struct cal_ctx *ctx) -{ - const struct v4l2_mbus_framefmt *format; - - format = &ctx->phy->formats[CAL_CAMERARX_PAD_SOURCE]; - - if (ctx->fmtinfo->code != format->code || - ctx->v_fmt.fmt.pix.height != format->height || - ctx->v_fmt.fmt.pix.width != format->width || - ctx->v_fmt.fmt.pix.field != format->field) - return -EPIPE; - - return 0; -} - -static int cal_start_streaming(struct vb2_queue *vq, unsigned int count) -{ - struct cal_ctx *ctx = vb2_get_drv_priv(vq); - struct cal_buffer *buf; - dma_addr_t addr; - int ret; - - ret = media_pipeline_start(&ctx->vdev.entity, &ctx->phy->pipe); - if (ret < 0) { - ctx_err(ctx, "Failed to start media pipeline: %d\n", ret); - goto error_release_buffers; - } - - /* - * Verify that the currently configured format matches the output of - * the connected CAMERARX. - */ - ret = cal_video_check_format(ctx); - if (ret < 0) { - ctx_dbg(3, ctx, - "Format mismatch between CAMERARX and video node\n"); - goto error_pipeline; - } - - spin_lock_irq(&ctx->dma.lock); - buf = list_first_entry(&ctx->dma.queue, struct cal_buffer, list); - ctx->dma.pending = buf; - list_del(&buf->list); - spin_unlock_irq(&ctx->dma.lock); - - addr = vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0); - - ret = pm_runtime_resume_and_get(ctx->cal->dev); - if (ret < 0) - goto error_pipeline; - - cal_ctx_set_dma_addr(ctx, addr); - cal_ctx_start(ctx); - - ret = v4l2_subdev_call(&ctx->phy->subdev, video, s_stream, 1); - if (ret) - goto error_stop; - - if (cal_debug >= 4) - cal_quickdump_regs(ctx->cal); - - return 0; - -error_stop: - cal_ctx_stop(ctx); - pm_runtime_put_sync(ctx->cal->dev); - -error_pipeline: - media_pipeline_stop(&ctx->vdev.entity); -error_release_buffers: - cal_release_buffers(ctx, VB2_BUF_STATE_QUEUED); - - return ret; -} - -static void cal_stop_streaming(struct vb2_queue *vq) -{ - struct cal_ctx *ctx = vb2_get_drv_priv(vq); - - cal_ctx_stop(ctx); - - v4l2_subdev_call(&ctx->phy->subdev, video, s_stream, 0); - - pm_runtime_put_sync(ctx->cal->dev); - - cal_release_buffers(ctx, VB2_BUF_STATE_ERROR); - - media_pipeline_stop(&ctx->vdev.entity); -} - -static const struct vb2_ops cal_video_qops = { - .queue_setup = cal_queue_setup, - .buf_prepare = cal_buffer_prepare, - .buf_queue = cal_buffer_queue, - .start_streaming = cal_start_streaming, - .stop_streaming = cal_stop_streaming, - .wait_prepare = vb2_ops_wait_prepare, - .wait_finish = vb2_ops_wait_finish, -}; - -/* ------------------------------------------------------------------ - * V4L2 Initialization and Registration - * ------------------------------------------------------------------ - */ - -static const struct v4l2_file_operations cal_fops = { - .owner = THIS_MODULE, - .open = v4l2_fh_open, - .release = vb2_fop_release, - .poll = vb2_fop_poll, - .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */ - .mmap = vb2_fop_mmap, -}; - -static int cal_ctx_v4l2_init_formats(struct cal_ctx *ctx) -{ - struct v4l2_subdev_mbus_code_enum mbus_code; - struct v4l2_mbus_framefmt mbus_fmt; - const struct cal_format_info *fmtinfo; - unsigned int i, j, k; - int ret = 0; - - /* Enumerate sub device formats and enable all matching local formats */ - ctx->active_fmt = devm_kcalloc(ctx->cal->dev, cal_num_formats, - sizeof(*ctx->active_fmt), GFP_KERNEL); - ctx->num_active_fmt = 0; - - for (j = 0, i = 0; ; ++j) { - - memset(&mbus_code, 0, sizeof(mbus_code)); - mbus_code.index = j; - mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE; - ret = v4l2_subdev_call(ctx->phy->sensor, pad, enum_mbus_code, - NULL, &mbus_code); - if (ret == -EINVAL) - break; - - if (ret) { - ctx_err(ctx, "Error enumerating mbus codes in subdev %s: %d\n", - ctx->phy->sensor->name, ret); - return ret; - } - - ctx_dbg(2, ctx, - "subdev %s: code: %04x idx: %u\n", - ctx->phy->sensor->name, mbus_code.code, j); - - for (k = 0; k < cal_num_formats; k++) { - fmtinfo = &cal_formats[k]; - - if (mbus_code.code == fmtinfo->code) { - ctx->active_fmt[i] = fmtinfo; - ctx_dbg(2, ctx, - "matched fourcc: %s: code: %04x idx: %u\n", - fourcc_to_str(fmtinfo->fourcc), - fmtinfo->code, i); - ctx->num_active_fmt = ++i; - } - } - } - - if (i == 0) { - ctx_err(ctx, "No suitable format reported by subdev %s\n", - ctx->phy->sensor->name); - return -EINVAL; - } - - ret = __subdev_get_format(ctx, &mbus_fmt); - if (ret) - return ret; - - fmtinfo = find_format_by_code(ctx, mbus_fmt.code); - if (!fmtinfo) { - ctx_dbg(3, ctx, "mbus code format (0x%08x) not found.\n", - mbus_fmt.code); - return -EINVAL; - } - - /* Save current format */ - v4l2_fill_pix_format(&ctx->v_fmt.fmt.pix, &mbus_fmt); - ctx->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - ctx->v_fmt.fmt.pix.pixelformat = fmtinfo->fourcc; - cal_calc_format_size(ctx, fmtinfo, &ctx->v_fmt); - ctx->fmtinfo = fmtinfo; - - return 0; -} - -int cal_ctx_v4l2_register(struct cal_ctx *ctx) -{ - struct video_device *vfd = &ctx->vdev; - int ret; - - ret = cal_ctx_v4l2_init_formats(ctx); - if (ret) - return ret; - - if (!cal_mc_api) { - struct v4l2_ctrl_handler *hdl = &ctx->ctrl_handler; - - ret = v4l2_ctrl_add_handler(hdl, ctx->phy->sensor->ctrl_handler, - NULL, true); - if (ret < 0) { - ctx_err(ctx, "Failed to add sensor ctrl handler\n"); - return ret; - } - } - - ret = video_register_device(vfd, VFL_TYPE_VIDEO, cal_video_nr); - if (ret < 0) { - ctx_err(ctx, "Failed to register video device\n"); - return ret; - } - - ret = media_create_pad_link(&ctx->phy->subdev.entity, - CAL_CAMERARX_PAD_SOURCE, - &vfd->entity, 0, - MEDIA_LNK_FL_IMMUTABLE | - MEDIA_LNK_FL_ENABLED); - if (ret) { - ctx_err(ctx, "Failed to create media link for context %u\n", - ctx->index); - video_unregister_device(vfd); - return ret; - } - - ctx_info(ctx, "V4L2 device registered as %s\n", - video_device_node_name(vfd)); - - return 0; -} - -void cal_ctx_v4l2_unregister(struct cal_ctx *ctx) -{ - ctx_dbg(1, ctx, "unregistering %s\n", - video_device_node_name(&ctx->vdev)); - - video_unregister_device(&ctx->vdev); -} - -int cal_ctx_v4l2_init(struct cal_ctx *ctx) -{ - struct video_device *vfd = &ctx->vdev; - struct vb2_queue *q = &ctx->vb_vidq; - int ret; - - INIT_LIST_HEAD(&ctx->dma.queue); - spin_lock_init(&ctx->dma.lock); - mutex_init(&ctx->mutex); - init_waitqueue_head(&ctx->dma.wait); - - /* Initialize the vb2 queue. */ - q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - q->io_modes = VB2_MMAP | VB2_DMABUF; - q->drv_priv = ctx; - q->buf_struct_size = sizeof(struct cal_buffer); - q->ops = &cal_video_qops; - q->mem_ops = &vb2_dma_contig_memops; - q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; - q->lock = &ctx->mutex; - q->min_buffers_needed = 3; - q->dev = ctx->cal->dev; - - ret = vb2_queue_init(q); - if (ret) - return ret; - - /* Initialize the video device and media entity. */ - vfd->fops = &cal_fops; - vfd->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING - | (cal_mc_api ? V4L2_CAP_IO_MC : 0); - vfd->v4l2_dev = &ctx->cal->v4l2_dev; - vfd->queue = q; - snprintf(vfd->name, sizeof(vfd->name), "CAL output %u", ctx->index); - vfd->release = video_device_release_empty; - vfd->ioctl_ops = cal_mc_api ? &cal_ioctl_mc_ops : &cal_ioctl_video_ops; - vfd->lock = &ctx->mutex; - video_set_drvdata(vfd, ctx); - - ctx->pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_pads_init(&vfd->entity, 1, &ctx->pad); - if (ret < 0) - return ret; - - if (!cal_mc_api) { - /* Initialize the control handler. */ - struct v4l2_ctrl_handler *hdl = &ctx->ctrl_handler; - - ret = v4l2_ctrl_handler_init(hdl, 11); - if (ret < 0) { - ctx_err(ctx, "Failed to init ctrl handler\n"); - goto error; - } - - vfd->ctrl_handler = hdl; - } - - return 0; - -error: - media_entity_cleanup(&vfd->entity); - return ret; -} - -void cal_ctx_v4l2_cleanup(struct cal_ctx *ctx) -{ - if (!cal_mc_api) - v4l2_ctrl_handler_free(&ctx->ctrl_handler); - - media_entity_cleanup(&ctx->vdev.entity); -} |