![Niklas Söderlund](/assets/img/avatar_default.png)
After the rework of the Gen2 file operations it's now trivial to merge the Gen2 and Gen3 versions. Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Reviewed-by: Ulrich Hecht <uli+renesas@fpond.eu> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
925 lines
22 KiB
C
925 lines
22 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Driver for Renesas R-Car VIN
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*
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* Copyright (C) 2016 Renesas Electronics Corp.
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* Copyright (C) 2011-2013 Renesas Solutions Corp.
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* Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com>
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* Copyright (C) 2008 Magnus Damm
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*
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* Based on the soc-camera rcar_vin driver
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*/
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#include <linux/pm_runtime.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-mc.h>
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#include <media/v4l2-rect.h>
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#include "rcar-vin.h"
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#define RVIN_DEFAULT_FORMAT V4L2_PIX_FMT_YUYV
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#define RVIN_DEFAULT_WIDTH 800
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#define RVIN_DEFAULT_HEIGHT 600
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#define RVIN_DEFAULT_FIELD V4L2_FIELD_NONE
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#define RVIN_DEFAULT_COLORSPACE V4L2_COLORSPACE_SRGB
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/* -----------------------------------------------------------------------------
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* Format Conversions
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*/
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static const struct rvin_video_format rvin_formats[] = {
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{
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.fourcc = V4L2_PIX_FMT_NV16,
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.bpp = 1,
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},
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{
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.fourcc = V4L2_PIX_FMT_YUYV,
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.bpp = 2,
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},
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{
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.fourcc = V4L2_PIX_FMT_UYVY,
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.bpp = 2,
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},
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{
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.fourcc = V4L2_PIX_FMT_RGB565,
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.bpp = 2,
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},
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{
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.fourcc = V4L2_PIX_FMT_XRGB555,
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.bpp = 2,
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},
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{
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.fourcc = V4L2_PIX_FMT_XBGR32,
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.bpp = 4,
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},
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};
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const struct rvin_video_format *rvin_format_from_pixel(u32 pixelformat)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(rvin_formats); i++)
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if (rvin_formats[i].fourcc == pixelformat)
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return rvin_formats + i;
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return NULL;
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}
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static u32 rvin_format_bytesperline(struct v4l2_pix_format *pix)
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{
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const struct rvin_video_format *fmt;
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fmt = rvin_format_from_pixel(pix->pixelformat);
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if (WARN_ON(!fmt))
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return -EINVAL;
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return pix->width * fmt->bpp;
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}
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static u32 rvin_format_sizeimage(struct v4l2_pix_format *pix)
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{
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if (pix->pixelformat == V4L2_PIX_FMT_NV16)
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return pix->bytesperline * pix->height * 2;
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return pix->bytesperline * pix->height;
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}
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static void rvin_format_align(struct rvin_dev *vin, struct v4l2_pix_format *pix)
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{
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u32 walign;
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if (!rvin_format_from_pixel(pix->pixelformat) ||
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(vin->info->model == RCAR_M1 &&
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pix->pixelformat == V4L2_PIX_FMT_XBGR32))
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pix->pixelformat = RVIN_DEFAULT_FORMAT;
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switch (pix->field) {
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case V4L2_FIELD_TOP:
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case V4L2_FIELD_BOTTOM:
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case V4L2_FIELD_NONE:
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case V4L2_FIELD_INTERLACED_TB:
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case V4L2_FIELD_INTERLACED_BT:
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case V4L2_FIELD_INTERLACED:
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break;
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case V4L2_FIELD_ALTERNATE:
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/*
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* Driver does not (yet) support outputting ALTERNATE to a
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* userspace. It does support outputting INTERLACED so use
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* the VIN hardware to combine the two fields.
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*/
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pix->field = V4L2_FIELD_INTERLACED;
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pix->height *= 2;
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break;
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default:
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pix->field = RVIN_DEFAULT_FIELD;
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break;
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}
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/* HW limit width to a multiple of 32 (2^5) for NV16 else 2 (2^1) */
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walign = vin->format.pixelformat == V4L2_PIX_FMT_NV16 ? 5 : 1;
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/* Limit to VIN capabilities */
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v4l_bound_align_image(&pix->width, 2, vin->info->max_width, walign,
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&pix->height, 4, vin->info->max_height, 2, 0);
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pix->bytesperline = rvin_format_bytesperline(pix);
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pix->sizeimage = rvin_format_sizeimage(pix);
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vin_dbg(vin, "Format %ux%u bpl: %u size: %u\n",
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pix->width, pix->height, pix->bytesperline, pix->sizeimage);
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}
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/* -----------------------------------------------------------------------------
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* V4L2
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*/
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static int rvin_reset_format(struct rvin_dev *vin)
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{
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struct v4l2_subdev_format fmt = {
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.which = V4L2_SUBDEV_FORMAT_ACTIVE,
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.pad = vin->parallel->source_pad,
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};
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int ret;
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ret = v4l2_subdev_call(vin_to_source(vin), pad, get_fmt, NULL, &fmt);
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if (ret)
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return ret;
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v4l2_fill_pix_format(&vin->format, &fmt.format);
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rvin_format_align(vin, &vin->format);
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vin->source.top = 0;
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vin->source.left = 0;
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vin->source.width = vin->format.width;
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vin->source.height = vin->format.height;
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vin->crop = vin->source;
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vin->compose = vin->source;
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return 0;
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}
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static int rvin_try_format(struct rvin_dev *vin, u32 which,
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struct v4l2_pix_format *pix,
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struct v4l2_rect *crop, struct v4l2_rect *compose)
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{
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struct v4l2_subdev *sd = vin_to_source(vin);
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struct v4l2_subdev_pad_config *pad_cfg;
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struct v4l2_subdev_format format = {
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.which = which,
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.pad = vin->parallel->source_pad,
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};
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enum v4l2_field field;
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u32 width, height;
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int ret;
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pad_cfg = v4l2_subdev_alloc_pad_config(sd);
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if (pad_cfg == NULL)
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return -ENOMEM;
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if (!rvin_format_from_pixel(pix->pixelformat) ||
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(vin->info->model == RCAR_M1 &&
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pix->pixelformat == V4L2_PIX_FMT_XBGR32))
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pix->pixelformat = RVIN_DEFAULT_FORMAT;
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v4l2_fill_mbus_format(&format.format, pix, vin->mbus_code);
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/* Allow the video device to override field and to scale */
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field = pix->field;
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width = pix->width;
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height = pix->height;
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ret = v4l2_subdev_call(sd, pad, set_fmt, pad_cfg, &format);
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if (ret < 0 && ret != -ENOIOCTLCMD)
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goto done;
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v4l2_fill_pix_format(pix, &format.format);
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if (crop) {
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crop->top = 0;
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crop->left = 0;
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crop->width = pix->width;
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crop->height = pix->height;
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/*
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* If source is ALTERNATE the driver will use the VIN hardware
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* to INTERLACE it. The crop height then needs to be doubled.
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*/
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if (pix->field == V4L2_FIELD_ALTERNATE)
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crop->height *= 2;
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}
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if (field != V4L2_FIELD_ANY)
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pix->field = field;
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pix->width = width;
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pix->height = height;
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rvin_format_align(vin, pix);
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if (compose) {
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compose->top = 0;
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compose->left = 0;
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compose->width = pix->width;
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compose->height = pix->height;
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}
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done:
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v4l2_subdev_free_pad_config(pad_cfg);
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return 0;
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}
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static int rvin_querycap(struct file *file, void *priv,
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struct v4l2_capability *cap)
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{
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struct rvin_dev *vin = video_drvdata(file);
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strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
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strscpy(cap->card, "R_Car_VIN", sizeof(cap->card));
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snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
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dev_name(vin->dev));
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return 0;
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}
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static int rvin_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 rvin_dev *vin = video_drvdata(file);
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return rvin_try_format(vin, V4L2_SUBDEV_FORMAT_TRY, &f->fmt.pix, NULL,
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NULL);
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}
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static int rvin_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 rvin_dev *vin = video_drvdata(file);
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struct v4l2_rect crop, compose;
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int ret;
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if (vb2_is_busy(&vin->queue))
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return -EBUSY;
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ret = rvin_try_format(vin, V4L2_SUBDEV_FORMAT_ACTIVE, &f->fmt.pix,
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&crop, &compose);
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if (ret)
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return ret;
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vin->format = f->fmt.pix;
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vin->crop = crop;
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vin->compose = compose;
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vin->source = crop;
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return 0;
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}
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static int rvin_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 rvin_dev *vin = video_drvdata(file);
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f->fmt.pix = vin->format;
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return 0;
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}
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static int rvin_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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if (f->index >= ARRAY_SIZE(rvin_formats))
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return -EINVAL;
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f->pixelformat = rvin_formats[f->index].fourcc;
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return 0;
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}
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static int rvin_g_selection(struct file *file, void *fh,
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struct v4l2_selection *s)
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{
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struct rvin_dev *vin = video_drvdata(file);
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if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
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return -EINVAL;
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switch (s->target) {
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case V4L2_SEL_TGT_CROP_BOUNDS:
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case V4L2_SEL_TGT_CROP_DEFAULT:
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s->r.left = s->r.top = 0;
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s->r.width = vin->source.width;
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s->r.height = vin->source.height;
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break;
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case V4L2_SEL_TGT_CROP:
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s->r = vin->crop;
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break;
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case V4L2_SEL_TGT_COMPOSE_BOUNDS:
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case V4L2_SEL_TGT_COMPOSE_DEFAULT:
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s->r.left = s->r.top = 0;
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s->r.width = vin->format.width;
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s->r.height = vin->format.height;
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break;
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case V4L2_SEL_TGT_COMPOSE:
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s->r = vin->compose;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int rvin_s_selection(struct file *file, void *fh,
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struct v4l2_selection *s)
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{
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struct rvin_dev *vin = video_drvdata(file);
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const struct rvin_video_format *fmt;
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struct v4l2_rect r = s->r;
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struct v4l2_rect max_rect;
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struct v4l2_rect min_rect = {
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.width = 6,
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.height = 2,
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};
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if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
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return -EINVAL;
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v4l2_rect_set_min_size(&r, &min_rect);
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switch (s->target) {
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case V4L2_SEL_TGT_CROP:
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/* Can't crop outside of source input */
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max_rect.top = max_rect.left = 0;
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max_rect.width = vin->source.width;
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max_rect.height = vin->source.height;
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v4l2_rect_map_inside(&r, &max_rect);
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v4l_bound_align_image(&r.width, 6, vin->source.width, 0,
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&r.height, 2, vin->source.height, 0, 0);
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r.top = clamp_t(s32, r.top, 0, vin->source.height - r.height);
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r.left = clamp_t(s32, r.left, 0, vin->source.width - r.width);
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vin->crop = s->r = r;
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vin_dbg(vin, "Cropped %dx%d@%d:%d of %dx%d\n",
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r.width, r.height, r.left, r.top,
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vin->source.width, vin->source.height);
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break;
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case V4L2_SEL_TGT_COMPOSE:
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/* Make sure compose rect fits inside output format */
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max_rect.top = max_rect.left = 0;
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max_rect.width = vin->format.width;
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max_rect.height = vin->format.height;
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v4l2_rect_map_inside(&r, &max_rect);
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/*
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* Composing is done by adding a offset to the buffer address,
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* the HW wants this address to be aligned to HW_BUFFER_MASK.
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* Make sure the top and left values meets this requirement.
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*/
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while ((r.top * vin->format.bytesperline) & HW_BUFFER_MASK)
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r.top--;
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fmt = rvin_format_from_pixel(vin->format.pixelformat);
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while ((r.left * fmt->bpp) & HW_BUFFER_MASK)
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r.left--;
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vin->compose = s->r = r;
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vin_dbg(vin, "Compose %dx%d@%d:%d in %dx%d\n",
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r.width, r.height, r.left, r.top,
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vin->format.width, vin->format.height);
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break;
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default:
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return -EINVAL;
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}
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/* HW supports modifying configuration while running */
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rvin_crop_scale_comp(vin);
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return 0;
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}
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static int rvin_g_pixelaspect(struct file *file, void *priv,
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int type, struct v4l2_fract *f)
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{
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struct rvin_dev *vin = video_drvdata(file);
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struct v4l2_subdev *sd = vin_to_source(vin);
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if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
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return -EINVAL;
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return v4l2_subdev_call(sd, video, g_pixelaspect, f);
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}
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static int rvin_enum_input(struct file *file, void *priv,
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struct v4l2_input *i)
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{
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struct rvin_dev *vin = video_drvdata(file);
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struct v4l2_subdev *sd = vin_to_source(vin);
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int ret;
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if (i->index != 0)
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return -EINVAL;
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ret = v4l2_subdev_call(sd, video, g_input_status, &i->status);
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if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
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return ret;
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i->type = V4L2_INPUT_TYPE_CAMERA;
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if (v4l2_subdev_has_op(sd, pad, dv_timings_cap)) {
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i->capabilities = V4L2_IN_CAP_DV_TIMINGS;
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i->std = 0;
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} else {
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i->capabilities = V4L2_IN_CAP_STD;
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i->std = vin->vdev.tvnorms;
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}
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strscpy(i->name, "Camera", sizeof(i->name));
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return 0;
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}
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static int rvin_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 rvin_s_input(struct file *file, void *priv, unsigned int i)
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{
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if (i > 0)
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return -EINVAL;
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return 0;
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}
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static int rvin_querystd(struct file *file, void *priv, v4l2_std_id *a)
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{
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struct rvin_dev *vin = video_drvdata(file);
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struct v4l2_subdev *sd = vin_to_source(vin);
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return v4l2_subdev_call(sd, video, querystd, a);
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}
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static int rvin_s_std(struct file *file, void *priv, v4l2_std_id a)
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{
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struct rvin_dev *vin = video_drvdata(file);
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int ret;
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ret = v4l2_subdev_call(vin_to_source(vin), video, s_std, a);
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if (ret < 0)
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return ret;
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vin->std = a;
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/* Changing the standard will change the width/height */
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return rvin_reset_format(vin);
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}
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static int rvin_g_std(struct file *file, void *priv, v4l2_std_id *a)
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{
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struct rvin_dev *vin = video_drvdata(file);
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if (v4l2_subdev_has_op(vin_to_source(vin), pad, dv_timings_cap))
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return -ENOIOCTLCMD;
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*a = vin->std;
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return 0;
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}
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static int rvin_subscribe_event(struct v4l2_fh *fh,
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const struct v4l2_event_subscription *sub)
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{
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switch (sub->type) {
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case V4L2_EVENT_SOURCE_CHANGE:
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return v4l2_event_subscribe(fh, sub, 4, NULL);
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}
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return v4l2_ctrl_subscribe_event(fh, sub);
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}
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|
|
static int rvin_enum_dv_timings(struct file *file, void *priv_fh,
|
|
struct v4l2_enum_dv_timings *timings)
|
|
{
|
|
struct rvin_dev *vin = video_drvdata(file);
|
|
struct v4l2_subdev *sd = vin_to_source(vin);
|
|
int ret;
|
|
|
|
if (timings->pad)
|
|
return -EINVAL;
|
|
|
|
timings->pad = vin->parallel->sink_pad;
|
|
|
|
ret = v4l2_subdev_call(sd, pad, enum_dv_timings, timings);
|
|
|
|
timings->pad = 0;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rvin_s_dv_timings(struct file *file, void *priv_fh,
|
|
struct v4l2_dv_timings *timings)
|
|
{
|
|
struct rvin_dev *vin = video_drvdata(file);
|
|
struct v4l2_subdev *sd = vin_to_source(vin);
|
|
int ret;
|
|
|
|
ret = v4l2_subdev_call(sd, video, s_dv_timings, timings);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Changing the timings will change the width/height */
|
|
return rvin_reset_format(vin);
|
|
}
|
|
|
|
static int rvin_g_dv_timings(struct file *file, void *priv_fh,
|
|
struct v4l2_dv_timings *timings)
|
|
{
|
|
struct rvin_dev *vin = video_drvdata(file);
|
|
struct v4l2_subdev *sd = vin_to_source(vin);
|
|
|
|
return v4l2_subdev_call(sd, video, g_dv_timings, timings);
|
|
}
|
|
|
|
static int rvin_query_dv_timings(struct file *file, void *priv_fh,
|
|
struct v4l2_dv_timings *timings)
|
|
{
|
|
struct rvin_dev *vin = video_drvdata(file);
|
|
struct v4l2_subdev *sd = vin_to_source(vin);
|
|
|
|
return v4l2_subdev_call(sd, video, query_dv_timings, timings);
|
|
}
|
|
|
|
static int rvin_dv_timings_cap(struct file *file, void *priv_fh,
|
|
struct v4l2_dv_timings_cap *cap)
|
|
{
|
|
struct rvin_dev *vin = video_drvdata(file);
|
|
struct v4l2_subdev *sd = vin_to_source(vin);
|
|
int ret;
|
|
|
|
if (cap->pad)
|
|
return -EINVAL;
|
|
|
|
cap->pad = vin->parallel->sink_pad;
|
|
|
|
ret = v4l2_subdev_call(sd, pad, dv_timings_cap, cap);
|
|
|
|
cap->pad = 0;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rvin_g_edid(struct file *file, void *fh, struct v4l2_edid *edid)
|
|
{
|
|
struct rvin_dev *vin = video_drvdata(file);
|
|
struct v4l2_subdev *sd = vin_to_source(vin);
|
|
int ret;
|
|
|
|
if (edid->pad)
|
|
return -EINVAL;
|
|
|
|
edid->pad = vin->parallel->sink_pad;
|
|
|
|
ret = v4l2_subdev_call(sd, pad, get_edid, edid);
|
|
|
|
edid->pad = 0;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rvin_s_edid(struct file *file, void *fh, struct v4l2_edid *edid)
|
|
{
|
|
struct rvin_dev *vin = video_drvdata(file);
|
|
struct v4l2_subdev *sd = vin_to_source(vin);
|
|
int ret;
|
|
|
|
if (edid->pad)
|
|
return -EINVAL;
|
|
|
|
edid->pad = vin->parallel->sink_pad;
|
|
|
|
ret = v4l2_subdev_call(sd, pad, set_edid, edid);
|
|
|
|
edid->pad = 0;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct v4l2_ioctl_ops rvin_ioctl_ops = {
|
|
.vidioc_querycap = rvin_querycap,
|
|
.vidioc_try_fmt_vid_cap = rvin_try_fmt_vid_cap,
|
|
.vidioc_g_fmt_vid_cap = rvin_g_fmt_vid_cap,
|
|
.vidioc_s_fmt_vid_cap = rvin_s_fmt_vid_cap,
|
|
.vidioc_enum_fmt_vid_cap = rvin_enum_fmt_vid_cap,
|
|
|
|
.vidioc_g_selection = rvin_g_selection,
|
|
.vidioc_s_selection = rvin_s_selection,
|
|
|
|
.vidioc_g_pixelaspect = rvin_g_pixelaspect,
|
|
|
|
.vidioc_enum_input = rvin_enum_input,
|
|
.vidioc_g_input = rvin_g_input,
|
|
.vidioc_s_input = rvin_s_input,
|
|
|
|
.vidioc_dv_timings_cap = rvin_dv_timings_cap,
|
|
.vidioc_enum_dv_timings = rvin_enum_dv_timings,
|
|
.vidioc_g_dv_timings = rvin_g_dv_timings,
|
|
.vidioc_s_dv_timings = rvin_s_dv_timings,
|
|
.vidioc_query_dv_timings = rvin_query_dv_timings,
|
|
|
|
.vidioc_g_edid = rvin_g_edid,
|
|
.vidioc_s_edid = rvin_s_edid,
|
|
|
|
.vidioc_querystd = rvin_querystd,
|
|
.vidioc_g_std = rvin_g_std,
|
|
.vidioc_s_std = rvin_s_std,
|
|
|
|
.vidioc_reqbufs = vb2_ioctl_reqbufs,
|
|
.vidioc_create_bufs = vb2_ioctl_create_bufs,
|
|
.vidioc_querybuf = vb2_ioctl_querybuf,
|
|
.vidioc_qbuf = vb2_ioctl_qbuf,
|
|
.vidioc_dqbuf = vb2_ioctl_dqbuf,
|
|
.vidioc_expbuf = vb2_ioctl_expbuf,
|
|
.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
|
|
.vidioc_streamon = vb2_ioctl_streamon,
|
|
.vidioc_streamoff = vb2_ioctl_streamoff,
|
|
|
|
.vidioc_log_status = v4l2_ctrl_log_status,
|
|
.vidioc_subscribe_event = rvin_subscribe_event,
|
|
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* V4L2 Media Controller
|
|
*/
|
|
|
|
static void rvin_mc_try_format(struct rvin_dev *vin,
|
|
struct v4l2_pix_format *pix)
|
|
{
|
|
/*
|
|
* The V4L2 specification clearly documents the colorspace fields
|
|
* as being set by drivers for capture devices. Using the values
|
|
* supplied by userspace thus wouldn't comply with the API. Until
|
|
* the API is updated force fixed values.
|
|
*/
|
|
pix->colorspace = RVIN_DEFAULT_COLORSPACE;
|
|
pix->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix->colorspace);
|
|
pix->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pix->colorspace);
|
|
pix->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true, pix->colorspace,
|
|
pix->ycbcr_enc);
|
|
|
|
rvin_format_align(vin, pix);
|
|
}
|
|
|
|
static int rvin_mc_try_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct rvin_dev *vin = video_drvdata(file);
|
|
|
|
rvin_mc_try_format(vin, &f->fmt.pix);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rvin_mc_s_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct rvin_dev *vin = video_drvdata(file);
|
|
|
|
if (vb2_is_busy(&vin->queue))
|
|
return -EBUSY;
|
|
|
|
rvin_mc_try_format(vin, &f->fmt.pix);
|
|
|
|
vin->format = f->fmt.pix;
|
|
|
|
vin->crop.top = 0;
|
|
vin->crop.left = 0;
|
|
vin->crop.width = vin->format.width;
|
|
vin->crop.height = vin->format.height;
|
|
vin->compose = vin->crop;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rvin_mc_enum_input(struct file *file, void *priv,
|
|
struct v4l2_input *i)
|
|
{
|
|
if (i->index != 0)
|
|
return -EINVAL;
|
|
|
|
i->type = V4L2_INPUT_TYPE_CAMERA;
|
|
strscpy(i->name, "Camera", sizeof(i->name));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct v4l2_ioctl_ops rvin_mc_ioctl_ops = {
|
|
.vidioc_querycap = rvin_querycap,
|
|
.vidioc_try_fmt_vid_cap = rvin_mc_try_fmt_vid_cap,
|
|
.vidioc_g_fmt_vid_cap = rvin_g_fmt_vid_cap,
|
|
.vidioc_s_fmt_vid_cap = rvin_mc_s_fmt_vid_cap,
|
|
.vidioc_enum_fmt_vid_cap = rvin_enum_fmt_vid_cap,
|
|
|
|
.vidioc_enum_input = rvin_mc_enum_input,
|
|
.vidioc_g_input = rvin_g_input,
|
|
.vidioc_s_input = rvin_s_input,
|
|
|
|
.vidioc_reqbufs = vb2_ioctl_reqbufs,
|
|
.vidioc_create_bufs = vb2_ioctl_create_bufs,
|
|
.vidioc_querybuf = vb2_ioctl_querybuf,
|
|
.vidioc_qbuf = vb2_ioctl_qbuf,
|
|
.vidioc_dqbuf = vb2_ioctl_dqbuf,
|
|
.vidioc_expbuf = vb2_ioctl_expbuf,
|
|
.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
|
|
.vidioc_streamon = vb2_ioctl_streamon,
|
|
.vidioc_streamoff = vb2_ioctl_streamoff,
|
|
|
|
.vidioc_log_status = v4l2_ctrl_log_status,
|
|
.vidioc_subscribe_event = rvin_subscribe_event,
|
|
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* File Operations
|
|
*/
|
|
|
|
static int rvin_power_parallel(struct rvin_dev *vin, bool on)
|
|
{
|
|
struct v4l2_subdev *sd = vin_to_source(vin);
|
|
int power = on ? 1 : 0;
|
|
int ret;
|
|
|
|
ret = v4l2_subdev_call(sd, core, s_power, power);
|
|
if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rvin_open(struct file *file)
|
|
{
|
|
struct rvin_dev *vin = video_drvdata(file);
|
|
int ret;
|
|
|
|
ret = pm_runtime_get_sync(vin->dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = mutex_lock_interruptible(&vin->lock);
|
|
if (ret)
|
|
goto err_pm;
|
|
|
|
file->private_data = vin;
|
|
|
|
ret = v4l2_fh_open(file);
|
|
if (ret)
|
|
goto err_unlock;
|
|
|
|
if (vin->info->use_mc) {
|
|
ret = v4l2_pipeline_pm_use(&vin->vdev.entity, 1);
|
|
if (ret < 0)
|
|
goto err_open;
|
|
} else {
|
|
if (v4l2_fh_is_singular_file(file)) {
|
|
ret = rvin_power_parallel(vin, true);
|
|
if (ret < 0)
|
|
goto err_open;
|
|
|
|
ret = v4l2_ctrl_handler_setup(&vin->ctrl_handler);
|
|
if (ret)
|
|
goto err_parallel;
|
|
}
|
|
}
|
|
mutex_unlock(&vin->lock);
|
|
|
|
return 0;
|
|
err_parallel:
|
|
rvin_power_parallel(vin, false);
|
|
err_open:
|
|
v4l2_fh_release(file);
|
|
err_unlock:
|
|
mutex_unlock(&vin->lock);
|
|
err_pm:
|
|
pm_runtime_put(vin->dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rvin_release(struct file *file)
|
|
{
|
|
struct rvin_dev *vin = video_drvdata(file);
|
|
bool fh_singular;
|
|
int ret;
|
|
|
|
mutex_lock(&vin->lock);
|
|
|
|
/* Save the singular status before we call the clean-up helper */
|
|
fh_singular = v4l2_fh_is_singular_file(file);
|
|
|
|
/* the release helper will cleanup any on-going streaming */
|
|
ret = _vb2_fop_release(file, NULL);
|
|
|
|
if (vin->info->use_mc) {
|
|
v4l2_pipeline_pm_use(&vin->vdev.entity, 0);
|
|
} else {
|
|
if (fh_singular)
|
|
rvin_power_parallel(vin, false);
|
|
}
|
|
|
|
mutex_unlock(&vin->lock);
|
|
|
|
pm_runtime_put(vin->dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct v4l2_file_operations rvin_fops = {
|
|
.owner = THIS_MODULE,
|
|
.unlocked_ioctl = video_ioctl2,
|
|
.open = rvin_open,
|
|
.release = rvin_release,
|
|
.poll = vb2_fop_poll,
|
|
.mmap = vb2_fop_mmap,
|
|
.read = vb2_fop_read,
|
|
};
|
|
|
|
void rvin_v4l2_unregister(struct rvin_dev *vin)
|
|
{
|
|
if (!video_is_registered(&vin->vdev))
|
|
return;
|
|
|
|
v4l2_info(&vin->v4l2_dev, "Removing %s\n",
|
|
video_device_node_name(&vin->vdev));
|
|
|
|
/* Checks internally if vdev have been init or not */
|
|
video_unregister_device(&vin->vdev);
|
|
}
|
|
|
|
static void rvin_notify(struct v4l2_subdev *sd,
|
|
unsigned int notification, void *arg)
|
|
{
|
|
struct rvin_dev *vin =
|
|
container_of(sd->v4l2_dev, struct rvin_dev, v4l2_dev);
|
|
|
|
switch (notification) {
|
|
case V4L2_DEVICE_NOTIFY_EVENT:
|
|
v4l2_event_queue(&vin->vdev, arg);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
int rvin_v4l2_register(struct rvin_dev *vin)
|
|
{
|
|
struct video_device *vdev = &vin->vdev;
|
|
int ret;
|
|
|
|
vin->v4l2_dev.notify = rvin_notify;
|
|
|
|
/* video node */
|
|
vdev->v4l2_dev = &vin->v4l2_dev;
|
|
vdev->queue = &vin->queue;
|
|
snprintf(vdev->name, sizeof(vdev->name), "VIN%u output", vin->id);
|
|
vdev->release = video_device_release_empty;
|
|
vdev->lock = &vin->lock;
|
|
vdev->fops = &rvin_fops;
|
|
vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
|
|
V4L2_CAP_READWRITE;
|
|
|
|
/* Set a default format */
|
|
vin->format.pixelformat = RVIN_DEFAULT_FORMAT;
|
|
vin->format.width = RVIN_DEFAULT_WIDTH;
|
|
vin->format.height = RVIN_DEFAULT_HEIGHT;
|
|
vin->format.field = RVIN_DEFAULT_FIELD;
|
|
vin->format.colorspace = RVIN_DEFAULT_COLORSPACE;
|
|
|
|
if (vin->info->use_mc) {
|
|
vdev->ioctl_ops = &rvin_mc_ioctl_ops;
|
|
} else {
|
|
vdev->ioctl_ops = &rvin_ioctl_ops;
|
|
rvin_reset_format(vin);
|
|
}
|
|
|
|
rvin_format_align(vin, &vin->format);
|
|
|
|
ret = video_register_device(&vin->vdev, VFL_TYPE_GRABBER, -1);
|
|
if (ret) {
|
|
vin_err(vin, "Failed to register video device\n");
|
|
return ret;
|
|
}
|
|
|
|
video_set_drvdata(&vin->vdev, vin);
|
|
|
|
v4l2_info(&vin->v4l2_dev, "Device registered as %s\n",
|
|
video_device_node_name(&vin->vdev));
|
|
|
|
return ret;
|
|
}
|