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1046 lines
26 KiB
1046 lines
26 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* TI Camera Access Layer (CAL) - Video Device |
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* |
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* Copyright (c) 2015-2020 Texas Instruments Inc. |
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* |
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* Authors: |
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* Benoit Parrot <[email protected]> |
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* Laurent Pinchart <[email protected]> |
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*/ |
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|
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#include <linux/ioctl.h> |
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#include <linux/pm_runtime.h> |
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#include <linux/videodev2.h> |
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|
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#include <media/media-device.h> |
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#include <media/v4l2-common.h> |
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#include <media/v4l2-ctrls.h> |
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#include <media/v4l2-device.h> |
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#include <media/v4l2-event.h> |
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#include <media/v4l2-fh.h> |
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#include <media/v4l2-ioctl.h> |
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#include <media/videobuf2-core.h> |
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#include <media/videobuf2-dma-contig.h> |
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#include "cal.h" |
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/* Print Four-character-code (FOURCC) */ |
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static char *fourcc_to_str(u32 fmt) |
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{ |
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static char code[5]; |
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code[0] = (unsigned char)(fmt & 0xff); |
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code[1] = (unsigned char)((fmt >> 8) & 0xff); |
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code[2] = (unsigned char)((fmt >> 16) & 0xff); |
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code[3] = (unsigned char)((fmt >> 24) & 0xff); |
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code[4] = '\0'; |
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return code; |
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} |
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|
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/* ------------------------------------------------------------------ |
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* V4L2 Common IOCTLs |
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* ------------------------------------------------------------------ |
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*/ |
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static int cal_querycap(struct file *file, void *priv, |
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struct v4l2_capability *cap) |
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{ |
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struct cal_ctx *ctx = video_drvdata(file); |
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|
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strscpy(cap->driver, CAL_MODULE_NAME, sizeof(cap->driver)); |
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strscpy(cap->card, CAL_MODULE_NAME, sizeof(cap->card)); |
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|
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snprintf(cap->bus_info, sizeof(cap->bus_info), |
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"platform:%s", dev_name(ctx->cal->dev)); |
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return 0; |
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} |
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|
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static int cal_g_fmt_vid_cap(struct file *file, void *priv, |
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struct v4l2_format *f) |
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{ |
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struct cal_ctx *ctx = video_drvdata(file); |
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|
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*f = ctx->v_fmt; |
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return 0; |
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} |
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|
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/* ------------------------------------------------------------------ |
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* V4L2 Video Node Centric IOCTLs |
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* ------------------------------------------------------------------ |
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*/ |
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static const struct cal_format_info *find_format_by_pix(struct cal_ctx *ctx, |
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u32 pixelformat) |
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{ |
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const struct cal_format_info *fmtinfo; |
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unsigned int k; |
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|
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for (k = 0; k < ctx->num_active_fmt; k++) { |
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fmtinfo = ctx->active_fmt[k]; |
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if (fmtinfo->fourcc == pixelformat) |
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return fmtinfo; |
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} |
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return NULL; |
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} |
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static const struct cal_format_info *find_format_by_code(struct cal_ctx *ctx, |
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u32 code) |
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{ |
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const struct cal_format_info *fmtinfo; |
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unsigned int k; |
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for (k = 0; k < ctx->num_active_fmt; k++) { |
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fmtinfo = ctx->active_fmt[k]; |
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if (fmtinfo->code == code) |
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return fmtinfo; |
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} |
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return NULL; |
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} |
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static int cal_legacy_enum_fmt_vid_cap(struct file *file, void *priv, |
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struct v4l2_fmtdesc *f) |
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{ |
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struct cal_ctx *ctx = video_drvdata(file); |
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const struct cal_format_info *fmtinfo; |
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if (f->index >= ctx->num_active_fmt) |
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return -EINVAL; |
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fmtinfo = ctx->active_fmt[f->index]; |
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f->pixelformat = fmtinfo->fourcc; |
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f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
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return 0; |
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} |
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static int __subdev_get_format(struct cal_ctx *ctx, |
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struct v4l2_mbus_framefmt *fmt) |
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{ |
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struct v4l2_subdev_format sd_fmt; |
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struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format; |
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int ret; |
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sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
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sd_fmt.pad = 0; |
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ret = v4l2_subdev_call(ctx->phy->source, pad, get_fmt, NULL, &sd_fmt); |
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if (ret) |
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return ret; |
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*fmt = *mbus_fmt; |
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ctx_dbg(1, ctx, "%s %dx%d code:%04X\n", __func__, |
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fmt->width, fmt->height, fmt->code); |
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return 0; |
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} |
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static int __subdev_set_format(struct cal_ctx *ctx, |
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struct v4l2_mbus_framefmt *fmt) |
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{ |
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struct v4l2_subdev_format sd_fmt; |
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struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format; |
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int ret; |
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sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
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sd_fmt.pad = 0; |
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*mbus_fmt = *fmt; |
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ret = v4l2_subdev_call(ctx->phy->source, pad, set_fmt, NULL, &sd_fmt); |
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if (ret) |
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return ret; |
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ctx_dbg(1, ctx, "%s %dx%d code:%04X\n", __func__, |
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fmt->width, fmt->height, fmt->code); |
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return 0; |
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} |
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static void cal_calc_format_size(struct cal_ctx *ctx, |
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const struct cal_format_info *fmtinfo, |
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struct v4l2_format *f) |
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{ |
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u32 bpl, max_width; |
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|
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/* |
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* Maximum width is bound by the DMA max width in bytes. |
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* We need to recalculate the actual maxi width depending on the |
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* number of bytes per pixels required. |
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*/ |
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max_width = CAL_MAX_WIDTH_BYTES / (ALIGN(fmtinfo->bpp, 8) >> 3); |
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v4l_bound_align_image(&f->fmt.pix.width, 48, max_width, 2, |
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&f->fmt.pix.height, 32, CAL_MAX_HEIGHT_LINES, |
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0, 0); |
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bpl = (f->fmt.pix.width * ALIGN(fmtinfo->bpp, 8)) >> 3; |
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f->fmt.pix.bytesperline = ALIGN(bpl, 16); |
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f->fmt.pix.sizeimage = f->fmt.pix.height * |
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f->fmt.pix.bytesperline; |
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ctx_dbg(3, ctx, "%s: fourcc: %s size: %dx%d bpl:%d img_size:%d\n", |
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__func__, fourcc_to_str(f->fmt.pix.pixelformat), |
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f->fmt.pix.width, f->fmt.pix.height, |
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f->fmt.pix.bytesperline, f->fmt.pix.sizeimage); |
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} |
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static int cal_legacy_try_fmt_vid_cap(struct file *file, void *priv, |
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struct v4l2_format *f) |
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{ |
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struct cal_ctx *ctx = video_drvdata(file); |
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const struct cal_format_info *fmtinfo; |
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struct v4l2_subdev_frame_size_enum fse; |
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int ret, found; |
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fmtinfo = find_format_by_pix(ctx, f->fmt.pix.pixelformat); |
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if (!fmtinfo) { |
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ctx_dbg(3, ctx, "Fourcc format (0x%08x) not found.\n", |
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f->fmt.pix.pixelformat); |
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/* Just get the first one enumerated */ |
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fmtinfo = ctx->active_fmt[0]; |
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f->fmt.pix.pixelformat = fmtinfo->fourcc; |
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} |
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f->fmt.pix.field = ctx->v_fmt.fmt.pix.field; |
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/* check for/find a valid width/height */ |
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ret = 0; |
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found = false; |
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fse.pad = 0; |
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fse.code = fmtinfo->code; |
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fse.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
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for (fse.index = 0; ; fse.index++) { |
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ret = v4l2_subdev_call(ctx->phy->source, pad, enum_frame_size, |
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NULL, &fse); |
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if (ret) |
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break; |
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if ((f->fmt.pix.width == fse.max_width) && |
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(f->fmt.pix.height == fse.max_height)) { |
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found = true; |
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break; |
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} else if ((f->fmt.pix.width >= fse.min_width) && |
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(f->fmt.pix.width <= fse.max_width) && |
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(f->fmt.pix.height >= fse.min_height) && |
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(f->fmt.pix.height <= fse.max_height)) { |
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found = true; |
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break; |
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} |
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} |
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if (!found) { |
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/* use existing values as default */ |
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f->fmt.pix.width = ctx->v_fmt.fmt.pix.width; |
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f->fmt.pix.height = ctx->v_fmt.fmt.pix.height; |
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} |
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/* |
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* Use current colorspace for now, it will get |
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* updated properly during s_fmt |
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*/ |
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f->fmt.pix.colorspace = ctx->v_fmt.fmt.pix.colorspace; |
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cal_calc_format_size(ctx, fmtinfo, f); |
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return 0; |
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} |
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static int cal_legacy_s_fmt_vid_cap(struct file *file, void *priv, |
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struct v4l2_format *f) |
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{ |
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struct cal_ctx *ctx = video_drvdata(file); |
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struct vb2_queue *q = &ctx->vb_vidq; |
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struct v4l2_subdev_format sd_fmt = { |
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.which = V4L2_SUBDEV_FORMAT_ACTIVE, |
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.pad = CAL_CAMERARX_PAD_SINK, |
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}; |
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const struct cal_format_info *fmtinfo; |
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int ret; |
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if (vb2_is_busy(q)) { |
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ctx_dbg(3, ctx, "%s device busy\n", __func__); |
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return -EBUSY; |
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} |
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ret = cal_legacy_try_fmt_vid_cap(file, priv, f); |
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if (ret < 0) |
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return ret; |
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fmtinfo = find_format_by_pix(ctx, f->fmt.pix.pixelformat); |
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v4l2_fill_mbus_format(&sd_fmt.format, &f->fmt.pix, fmtinfo->code); |
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ret = __subdev_set_format(ctx, &sd_fmt.format); |
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if (ret) |
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return ret; |
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/* Just double check nothing has gone wrong */ |
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if (sd_fmt.format.code != fmtinfo->code) { |
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ctx_dbg(3, ctx, |
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"%s subdev changed format on us, this should not happen\n", |
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__func__); |
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return -EINVAL; |
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} |
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v4l2_fill_pix_format(&ctx->v_fmt.fmt.pix, &sd_fmt.format); |
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ctx->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
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ctx->v_fmt.fmt.pix.pixelformat = fmtinfo->fourcc; |
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ctx->v_fmt.fmt.pix.field = sd_fmt.format.field; |
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cal_calc_format_size(ctx, fmtinfo, &ctx->v_fmt); |
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v4l2_subdev_call(&ctx->phy->subdev, pad, set_fmt, NULL, &sd_fmt); |
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ctx->fmtinfo = fmtinfo; |
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*f = ctx->v_fmt; |
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return 0; |
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} |
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static int cal_legacy_enum_framesizes(struct file *file, void *fh, |
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struct v4l2_frmsizeenum *fsize) |
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{ |
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struct cal_ctx *ctx = video_drvdata(file); |
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const struct cal_format_info *fmtinfo; |
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struct v4l2_subdev_frame_size_enum fse; |
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int ret; |
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/* check for valid format */ |
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fmtinfo = find_format_by_pix(ctx, fsize->pixel_format); |
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if (!fmtinfo) { |
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ctx_dbg(3, ctx, "Invalid pixel code: %x\n", |
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fsize->pixel_format); |
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return -EINVAL; |
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} |
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fse.index = fsize->index; |
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fse.pad = 0; |
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fse.code = fmtinfo->code; |
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fse.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
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ret = v4l2_subdev_call(ctx->phy->source, pad, enum_frame_size, NULL, |
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&fse); |
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if (ret) |
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return ret; |
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ctx_dbg(1, ctx, "%s: index: %d code: %x W:[%d,%d] H:[%d,%d]\n", |
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__func__, fse.index, fse.code, fse.min_width, fse.max_width, |
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fse.min_height, fse.max_height); |
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fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; |
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fsize->discrete.width = fse.max_width; |
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fsize->discrete.height = fse.max_height; |
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return 0; |
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} |
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static int cal_legacy_enum_input(struct file *file, void *priv, |
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struct v4l2_input *inp) |
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{ |
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if (inp->index > 0) |
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return -EINVAL; |
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inp->type = V4L2_INPUT_TYPE_CAMERA; |
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sprintf(inp->name, "Camera %u", inp->index); |
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return 0; |
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} |
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static int cal_legacy_g_input(struct file *file, void *priv, unsigned int *i) |
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{ |
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*i = 0; |
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return 0; |
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} |
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static int cal_legacy_s_input(struct file *file, void *priv, unsigned int i) |
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{ |
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return i > 0 ? -EINVAL : 0; |
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} |
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/* timeperframe is arbitrary and continuous */ |
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static int cal_legacy_enum_frameintervals(struct file *file, void *priv, |
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struct v4l2_frmivalenum *fival) |
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{ |
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struct cal_ctx *ctx = video_drvdata(file); |
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const struct cal_format_info *fmtinfo; |
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struct v4l2_subdev_frame_interval_enum fie = { |
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.index = fival->index, |
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.width = fival->width, |
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.height = fival->height, |
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.which = V4L2_SUBDEV_FORMAT_ACTIVE, |
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}; |
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int ret; |
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fmtinfo = find_format_by_pix(ctx, fival->pixel_format); |
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if (!fmtinfo) |
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return -EINVAL; |
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fie.code = fmtinfo->code; |
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ret = v4l2_subdev_call(ctx->phy->source, pad, enum_frame_interval, |
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NULL, &fie); |
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if (ret) |
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return ret; |
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fival->type = V4L2_FRMIVAL_TYPE_DISCRETE; |
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fival->discrete = fie.interval; |
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return 0; |
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} |
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static int cal_legacy_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a) |
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{ |
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struct cal_ctx *ctx = video_drvdata(file); |
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return v4l2_g_parm_cap(video_devdata(file), ctx->phy->source, a); |
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} |
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static int cal_legacy_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a) |
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{ |
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struct cal_ctx *ctx = video_drvdata(file); |
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return v4l2_s_parm_cap(video_devdata(file), ctx->phy->source, a); |
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} |
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static const struct v4l2_ioctl_ops cal_ioctl_legacy_ops = { |
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.vidioc_querycap = cal_querycap, |
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.vidioc_enum_fmt_vid_cap = cal_legacy_enum_fmt_vid_cap, |
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.vidioc_g_fmt_vid_cap = cal_g_fmt_vid_cap, |
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.vidioc_try_fmt_vid_cap = cal_legacy_try_fmt_vid_cap, |
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.vidioc_s_fmt_vid_cap = cal_legacy_s_fmt_vid_cap, |
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.vidioc_enum_framesizes = cal_legacy_enum_framesizes, |
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.vidioc_reqbufs = vb2_ioctl_reqbufs, |
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.vidioc_create_bufs = vb2_ioctl_create_bufs, |
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.vidioc_prepare_buf = vb2_ioctl_prepare_buf, |
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.vidioc_querybuf = vb2_ioctl_querybuf, |
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.vidioc_qbuf = vb2_ioctl_qbuf, |
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.vidioc_dqbuf = vb2_ioctl_dqbuf, |
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.vidioc_expbuf = vb2_ioctl_expbuf, |
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.vidioc_enum_input = cal_legacy_enum_input, |
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.vidioc_g_input = cal_legacy_g_input, |
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.vidioc_s_input = cal_legacy_s_input, |
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.vidioc_enum_frameintervals = cal_legacy_enum_frameintervals, |
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.vidioc_streamon = vb2_ioctl_streamon, |
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.vidioc_streamoff = vb2_ioctl_streamoff, |
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.vidioc_log_status = v4l2_ctrl_log_status, |
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.vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
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.vidioc_unsubscribe_event = v4l2_event_unsubscribe, |
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.vidioc_g_parm = cal_legacy_g_parm, |
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.vidioc_s_parm = cal_legacy_s_parm, |
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}; |
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|
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/* ------------------------------------------------------------------ |
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* V4L2 Media Controller Centric IOCTLs |
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* ------------------------------------------------------------------ |
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*/ |
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|
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static int cal_mc_enum_fmt_vid_cap(struct file *file, void *priv, |
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struct v4l2_fmtdesc *f) |
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{ |
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unsigned int i; |
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unsigned int idx; |
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|
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if (f->index >= cal_num_formats) |
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return -EINVAL; |
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|
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idx = 0; |
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|
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for (i = 0; i < cal_num_formats; ++i) { |
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if (f->mbus_code && cal_formats[i].code != f->mbus_code) |
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continue; |
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|
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if (idx == f->index) { |
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f->pixelformat = cal_formats[i].fourcc; |
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f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
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return 0; |
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} |
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|
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idx++; |
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} |
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|
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return -EINVAL; |
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} |
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|
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static void cal_mc_try_fmt(struct cal_ctx *ctx, struct v4l2_format *f, |
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const struct cal_format_info **info) |
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{ |
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struct v4l2_pix_format *format = &f->fmt.pix; |
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const struct cal_format_info *fmtinfo; |
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unsigned int bpp; |
|
|
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/* |
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* Default to the first format if the requested pixel format code isn't |
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* supported. |
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*/ |
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fmtinfo = cal_format_by_fourcc(f->fmt.pix.pixelformat); |
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if (!fmtinfo) |
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fmtinfo = &cal_formats[0]; |
|
|
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/* |
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* Clamp the size, update the pixel format. The field and colorspace are |
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* accepted as-is, except for V4L2_FIELD_ANY that is turned into |
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* V4L2_FIELD_NONE. |
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*/ |
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bpp = ALIGN(fmtinfo->bpp, 8); |
|
|
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format->width = clamp_t(unsigned int, format->width, |
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CAL_MIN_WIDTH_BYTES * 8 / bpp, |
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CAL_MAX_WIDTH_BYTES * 8 / bpp); |
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format->height = clamp_t(unsigned int, format->height, |
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CAL_MIN_HEIGHT_LINES, CAL_MAX_HEIGHT_LINES); |
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format->pixelformat = fmtinfo->fourcc; |
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|
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if (format->field == V4L2_FIELD_ANY) |
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format->field = V4L2_FIELD_NONE; |
|
|
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/* |
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* Calculate the number of bytes per line and the image size. The |
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* hardware stores the stride as a number of 16 bytes words, in a |
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* signed 15-bit value. Only 14 bits are thus usable. |
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*/ |
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format->bytesperline = ALIGN(clamp(format->bytesperline, |
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format->width * bpp / 8, |
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((1U << 14) - 1) * 16), 16); |
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|
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format->sizeimage = format->height * format->bytesperline; |
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|
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format->colorspace = ctx->v_fmt.fmt.pix.colorspace; |
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|
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if (info) |
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*info = fmtinfo; |
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|
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ctx_dbg(3, ctx, "%s: %s %ux%u (bytesperline %u sizeimage %u)\n", |
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__func__, fourcc_to_str(format->pixelformat), |
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format->width, format->height, |
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format->bytesperline, format->sizeimage); |
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} |
|
|
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static int cal_mc_try_fmt_vid_cap(struct file *file, void *priv, |
|
struct v4l2_format *f) |
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{ |
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struct cal_ctx *ctx = video_drvdata(file); |
|
|
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cal_mc_try_fmt(ctx, f, NULL); |
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return 0; |
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} |
|
|
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static int cal_mc_s_fmt_vid_cap(struct file *file, void *priv, |
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struct v4l2_format *f) |
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{ |
|
struct cal_ctx *ctx = video_drvdata(file); |
|
const struct cal_format_info *fmtinfo; |
|
|
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if (vb2_is_busy(&ctx->vb_vidq)) { |
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ctx_dbg(3, ctx, "%s device busy\n", __func__); |
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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; |
|
struct media_pad *remote_pad; |
|
|
|
remote_pad = media_entity_remote_pad(&ctx->pad); |
|
if (!remote_pad) |
|
return -ENODEV; |
|
|
|
format = &ctx->phy->formats[remote_pad->index]; |
|
|
|
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; |
|
} |
|
|
|
ret = cal_ctx_prepare(ctx); |
|
if (ret) { |
|
ctx_err(ctx, "Failed to prepare context: %d\n", ret); |
|
goto error_pipeline; |
|
} |
|
|
|
spin_lock_irq(&ctx->dma.lock); |
|
buf = list_first_entry(&ctx->dma.queue, struct cal_buffer, list); |
|
ctx->dma.active = 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); |
|
cal_ctx_unprepare(ctx); |
|
|
|
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_ctx_unprepare(ctx); |
|
|
|
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->source, 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->source->name, ret); |
|
return ret; |
|
} |
|
|
|
ctx_dbg(2, ctx, |
|
"subdev %s: code: %04x idx: %u\n", |
|
ctx->phy->source->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->source->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; |
|
} |
|
|
|
static int cal_ctx_v4l2_init_mc_format(struct cal_ctx *ctx) |
|
{ |
|
const struct cal_format_info *fmtinfo; |
|
struct v4l2_pix_format *pix_fmt = &ctx->v_fmt.fmt.pix; |
|
|
|
fmtinfo = cal_format_by_code(MEDIA_BUS_FMT_UYVY8_2X8); |
|
if (!fmtinfo) |
|
return -EINVAL; |
|
|
|
pix_fmt->width = 640; |
|
pix_fmt->height = 480; |
|
pix_fmt->field = V4L2_FIELD_NONE; |
|
pix_fmt->colorspace = V4L2_COLORSPACE_SRGB; |
|
pix_fmt->ycbcr_enc = V4L2_YCBCR_ENC_601; |
|
pix_fmt->quantization = V4L2_QUANTIZATION_LIM_RANGE; |
|
pix_fmt->xfer_func = V4L2_XFER_FUNC_SRGB; |
|
pix_fmt->pixelformat = fmtinfo->fourcc; |
|
|
|
ctx->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
|
|
|
/* Save current format */ |
|
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; |
|
|
|
if (!cal_mc_api) { |
|
struct v4l2_ctrl_handler *hdl = &ctx->ctrl_handler; |
|
|
|
ret = cal_ctx_v4l2_init_formats(ctx); |
|
if (ret) { |
|
ctx_err(ctx, "Failed to init formats: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
ret = v4l2_ctrl_add_handler(hdl, ctx->phy->source->ctrl_handler, |
|
NULL, true); |
|
if (ret < 0) { |
|
ctx_err(ctx, "Failed to add source ctrl handler\n"); |
|
return ret; |
|
} |
|
} else { |
|
ret = cal_ctx_v4l2_init_mc_format(ctx); |
|
if (ret) { |
|
ctx_err(ctx, "Failed to init format: %d\n", ret); |
|
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_FIRST_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->dma_ctx); |
|
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->dma_ctx); |
|
vfd->release = video_device_release_empty; |
|
vfd->ioctl_ops = cal_mc_api ? &cal_ioctl_mc_ops : &cal_ioctl_legacy_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); |
|
}
|
|
|