// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2019 Fuzhou Rockchip Electronics Co., Ltd. */
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#include <linux/kfifo.h>
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#include <media/v4l2-common.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-sg.h>
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#include <media/videobuf2-vmalloc.h> /* for ISP statistics */
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#include "dev.h"
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#include "isp_stats.h"
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#include "isp_stats_v1x.h"
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#include "isp_stats_v2x.h"
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#include "isp_stats_v21.h"
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#include "isp_stats_v3x.h"
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#include "isp_stats_v32.h"
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#define STATS_NAME DRIVER_NAME "-statistics"
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#define RKISP_ISP_STATS_REQ_BUFS_MIN 2
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#define RKISP_ISP_STATS_REQ_BUFS_MAX 8
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static int rkisp_stats_enum_fmt_meta_cap(struct file *file, void *priv,
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struct v4l2_fmtdesc *f)
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{
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struct video_device *video = video_devdata(file);
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struct rkisp_isp_stats_vdev *stats_vdev = video_get_drvdata(video);
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if (f->index > 0 || f->type != video->queue->type)
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return -EINVAL;
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f->pixelformat = stats_vdev->vdev_fmt.fmt.meta.dataformat;
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return 0;
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}
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static int rkisp_stats_g_fmt_meta_cap(struct file *file, void *priv,
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struct v4l2_format *f)
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{
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struct video_device *video = video_devdata(file);
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struct rkisp_isp_stats_vdev *stats_vdev = video_get_drvdata(video);
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struct v4l2_meta_format *meta = &f->fmt.meta;
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if (f->type != video->queue->type)
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return -EINVAL;
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memset(meta, 0, sizeof(*meta));
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meta->dataformat = stats_vdev->vdev_fmt.fmt.meta.dataformat;
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meta->buffersize = stats_vdev->vdev_fmt.fmt.meta.buffersize;
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return 0;
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}
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static int rkisp_stats_querycap(struct file *file,
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void *priv, struct v4l2_capability *cap)
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{
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struct video_device *vdev = video_devdata(file);
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struct rkisp_isp_stats_vdev *stats_vdev = video_get_drvdata(vdev);
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strcpy(cap->driver, DRIVER_NAME);
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snprintf(cap->driver, sizeof(cap->driver),
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"%s_v%d", DRIVER_NAME,
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stats_vdev->dev->isp_ver >> 4);
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strlcpy(cap->card, vdev->name, sizeof(cap->card));
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strlcpy(cap->bus_info, "platform: " DRIVER_NAME, sizeof(cap->bus_info));
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cap->version = RKISP_DRIVER_VERSION;
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return 0;
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}
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/* ISP video device IOCTLs */
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static const struct v4l2_ioctl_ops rkisp_stats_ioctl = {
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.vidioc_reqbufs = vb2_ioctl_reqbufs,
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.vidioc_querybuf = vb2_ioctl_querybuf,
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.vidioc_create_bufs = vb2_ioctl_create_bufs,
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.vidioc_qbuf = vb2_ioctl_qbuf,
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.vidioc_dqbuf = vb2_ioctl_dqbuf,
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.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
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.vidioc_expbuf = vb2_ioctl_expbuf,
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.vidioc_streamon = vb2_ioctl_streamon,
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.vidioc_streamoff = vb2_ioctl_streamoff,
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.vidioc_enum_fmt_meta_cap = rkisp_stats_enum_fmt_meta_cap,
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.vidioc_g_fmt_meta_cap = rkisp_stats_g_fmt_meta_cap,
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.vidioc_s_fmt_meta_cap = rkisp_stats_g_fmt_meta_cap,
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.vidioc_try_fmt_meta_cap = rkisp_stats_g_fmt_meta_cap,
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.vidioc_querycap = rkisp_stats_querycap
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};
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static int rkisp_stats_fh_open(struct file *filp)
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{
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struct rkisp_isp_stats_vdev *stats = video_drvdata(filp);
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int ret;
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if (!stats->dev->is_probe_end)
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return -EINVAL;
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ret = v4l2_fh_open(filp);
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if (!ret) {
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ret = v4l2_pipeline_pm_get(&stats->vnode.vdev.entity);
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if (ret < 0)
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vb2_fop_release(filp);
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}
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return ret;
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}
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static int rkisp_stats_fop_release(struct file *file)
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{
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struct rkisp_isp_stats_vdev *stats = video_drvdata(file);
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int ret;
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ret = vb2_fop_release(file);
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if (!ret)
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v4l2_pipeline_pm_put(&stats->vnode.vdev.entity);
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return ret;
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}
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struct v4l2_file_operations rkisp_stats_fops = {
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.mmap = vb2_fop_mmap,
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.unlocked_ioctl = video_ioctl2,
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.poll = vb2_fop_poll,
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.open = rkisp_stats_fh_open,
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.release = rkisp_stats_fop_release
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};
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static int rkisp_stats_vb2_queue_setup(struct vb2_queue *vq,
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unsigned int *num_buffers,
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unsigned int *num_planes,
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unsigned int sizes[],
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struct device *alloc_ctxs[])
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{
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struct rkisp_isp_stats_vdev *stats_vdev = vq->drv_priv;
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*num_planes = 1;
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*num_buffers = clamp_t(u32, *num_buffers, RKISP_ISP_STATS_REQ_BUFS_MIN,
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RKISP_ISP_STATS_REQ_BUFS_MAX);
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sizes[0] = stats_vdev->vdev_fmt.fmt.meta.buffersize;
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INIT_LIST_HEAD(&stats_vdev->stat);
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return 0;
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}
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static void rkisp_stats_vb2_buf_queue(struct vb2_buffer *vb)
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{
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struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
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struct rkisp_buffer *stats_buf = to_rkisp_buffer(vbuf);
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struct vb2_queue *vq = vb->vb2_queue;
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struct rkisp_isp_stats_vdev *stats_dev = vq->drv_priv;
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u32 size = stats_dev->vdev_fmt.fmt.meta.buffersize;
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unsigned long flags;
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stats_buf->vaddr[0] = vb2_plane_vaddr(vb, 0);
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if (stats_dev->dev->isp_ver == ISP_V32) {
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struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
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stats_buf->buff_addr[0] = sg_dma_address(sgt->sgl);
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}
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if (stats_buf->vaddr[0])
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memset(stats_buf->vaddr[0], 0, size);
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spin_lock_irqsave(&stats_dev->rd_lock, flags);
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if (stats_dev->dev->isp_ver == ISP_V32 && stats_dev->dev->is_pre_on) {
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struct rkisp32_isp_stat_buffer *buf = stats_dev->stats_buf[0].vaddr;
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if (buf && !buf->frame_id && buf->meas_type && stats_buf->vaddr[0]) {
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dev_info(stats_dev->dev->dev,
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"tb stat seq:%d meas_type:0x%x\n",
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buf->frame_id, buf->meas_type);
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memcpy(stats_buf->vaddr[0], buf, sizeof(struct rkisp32_isp_stat_buffer));
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buf->meas_type = 0;
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vb2_set_plane_payload(vb, 0, sizeof(struct rkisp32_isp_stat_buffer));
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vbuf->sequence = buf->frame_id;
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spin_unlock_irqrestore(&stats_dev->rd_lock, flags);
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vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
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return;
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}
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}
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list_add_tail(&stats_buf->queue, &stats_dev->stat);
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spin_unlock_irqrestore(&stats_dev->rd_lock, flags);
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}
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static void rkisp_stats_vb2_stop_streaming(struct vb2_queue *vq)
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{
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struct rkisp_isp_stats_vdev *stats_vdev = vq->drv_priv;
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struct rkisp_buffer *buf;
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unsigned long flags;
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int i;
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/* Make sure no new work queued in isr before draining wq */
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spin_lock_irqsave(&stats_vdev->irq_lock, flags);
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stats_vdev->streamon = false;
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spin_unlock_irqrestore(&stats_vdev->irq_lock, flags);
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tasklet_disable(&stats_vdev->rd_tasklet);
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spin_lock_irqsave(&stats_vdev->rd_lock, flags);
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for (i = 0; i < RKISP_ISP_STATS_REQ_BUFS_MAX; i++) {
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if (list_empty(&stats_vdev->stat))
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break;
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buf = list_first_entry(&stats_vdev->stat,
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struct rkisp_buffer, queue);
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list_del(&buf->queue);
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vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
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}
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if (stats_vdev->cur_buf) {
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vb2_buffer_done(&stats_vdev->cur_buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
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if (stats_vdev->cur_buf == stats_vdev->nxt_buf)
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stats_vdev->nxt_buf = NULL;
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stats_vdev->cur_buf = NULL;
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}
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if (stats_vdev->nxt_buf) {
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vb2_buffer_done(&stats_vdev->nxt_buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
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stats_vdev->nxt_buf = NULL;
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}
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spin_unlock_irqrestore(&stats_vdev->rd_lock, flags);
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stats_vdev->ae_meas_done_next = false;
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stats_vdev->af_meas_done_next = false;
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}
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static int
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rkisp_stats_vb2_start_streaming(struct vb2_queue *queue,
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unsigned int count)
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{
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struct rkisp_isp_stats_vdev *stats_vdev = queue->drv_priv;
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stats_vdev->cur_buf = NULL;
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stats_vdev->ops->rdbk_enable(stats_vdev, false);
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stats_vdev->streamon = true;
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kfifo_reset(&stats_vdev->rd_kfifo);
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tasklet_enable(&stats_vdev->rd_tasklet);
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return 0;
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}
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static struct vb2_ops rkisp_stats_vb2_ops = {
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.queue_setup = rkisp_stats_vb2_queue_setup,
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.buf_queue = rkisp_stats_vb2_buf_queue,
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.wait_prepare = vb2_ops_wait_prepare,
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.wait_finish = vb2_ops_wait_finish,
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.stop_streaming = rkisp_stats_vb2_stop_streaming,
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.start_streaming = rkisp_stats_vb2_start_streaming,
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};
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static int rkisp_stats_init_vb2_queue(struct vb2_queue *q,
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struct rkisp_isp_stats_vdev *stats_vdev)
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{
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q->type = V4L2_BUF_TYPE_META_CAPTURE;
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q->io_modes = VB2_MMAP | VB2_USERPTR;
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q->drv_priv = stats_vdev;
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q->ops = &rkisp_stats_vb2_ops;
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if (stats_vdev->dev->isp_ver == ISP_V32) {
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q->mem_ops = stats_vdev->dev->hw_dev->mem_ops;
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if (stats_vdev->dev->hw_dev->is_dma_contig)
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q->dma_attrs = DMA_ATTR_FORCE_CONTIGUOUS;
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} else {
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q->mem_ops = &vb2_vmalloc_memops;
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}
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q->buf_struct_size = sizeof(struct rkisp_buffer);
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q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
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q->lock = &stats_vdev->dev->iqlock;
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q->dev = stats_vdev->dev->dev;
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return vb2_queue_init(q);
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}
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static void rkisp_stats_readout_task(unsigned long data)
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{
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unsigned int out = 0;
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struct rkisp_isp_readout_work work;
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struct rkisp_isp_stats_vdev *vdev =
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(struct rkisp_isp_stats_vdev *)data;
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while (!kfifo_is_empty(&vdev->rd_kfifo)) {
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out = kfifo_out(&vdev->rd_kfifo,
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&work, sizeof(work));
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if (!out)
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break;
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if (work.readout == RKISP_ISP_READOUT_MEAS)
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vdev->ops->send_meas(vdev, &work);
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}
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}
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static void rkisp_init_stats_vdev(struct rkisp_isp_stats_vdev *stats_vdev)
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{
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stats_vdev->rd_buf_idx = 0;
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stats_vdev->wr_buf_idx = 0;
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memset(stats_vdev->stats_buf, 0, sizeof(stats_vdev->stats_buf));
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if (stats_vdev->dev->isp_ver <= ISP_V13)
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rkisp_init_stats_vdev_v1x(stats_vdev);
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else if (stats_vdev->dev->isp_ver == ISP_V21)
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rkisp_init_stats_vdev_v21(stats_vdev);
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else if (stats_vdev->dev->isp_ver == ISP_V20)
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rkisp_init_stats_vdev_v2x(stats_vdev);
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else if (stats_vdev->dev->isp_ver == ISP_V30)
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rkisp_init_stats_vdev_v3x(stats_vdev);
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else
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rkisp_init_stats_vdev_v32(stats_vdev);
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}
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static void rkisp_uninit_stats_vdev(struct rkisp_isp_stats_vdev *stats_vdev)
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{
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if (stats_vdev->dev->isp_ver <= ISP_V13)
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rkisp_uninit_stats_vdev_v1x(stats_vdev);
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else if (stats_vdev->dev->isp_ver == ISP_V21)
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rkisp_uninit_stats_vdev_v21(stats_vdev);
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else if (stats_vdev->dev->isp_ver == ISP_V20)
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rkisp_uninit_stats_vdev_v2x(stats_vdev);
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else if (stats_vdev->dev->isp_ver == ISP_V30)
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rkisp_uninit_stats_vdev_v3x(stats_vdev);
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else
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rkisp_uninit_stats_vdev_v32(stats_vdev);
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}
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void rkisp_stats_rdbk_enable(struct rkisp_isp_stats_vdev *stats_vdev, bool en)
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{
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stats_vdev->ops->rdbk_enable(stats_vdev, en);
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}
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void rkisp_stats_first_ddr_config(struct rkisp_isp_stats_vdev *stats_vdev)
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{
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if (stats_vdev->dev->isp_ver == ISP_V20)
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rkisp_stats_first_ddr_config_v2x(stats_vdev);
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else if (stats_vdev->dev->isp_ver == ISP_V21)
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rkisp_stats_first_ddr_config_v21(stats_vdev);
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else if (stats_vdev->dev->isp_ver == ISP_V30)
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rkisp_stats_first_ddr_config_v3x(stats_vdev);
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else if (stats_vdev->dev->isp_ver == ISP_V32)
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rkisp_stats_first_ddr_config_v32(stats_vdev);
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}
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void rkisp_stats_next_ddr_config(struct rkisp_isp_stats_vdev *stats_vdev)
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{
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if (stats_vdev->dev->isp_ver == ISP_V32)
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rkisp_stats_next_ddr_config_v32(stats_vdev);
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}
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void rkisp_stats_isr(struct rkisp_isp_stats_vdev *stats_vdev,
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u32 isp_ris, u32 isp3a_ris)
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{
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stats_vdev->ops->isr_hdl(stats_vdev, isp_ris, isp3a_ris);
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}
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int rkisp_register_stats_vdev(struct rkisp_isp_stats_vdev *stats_vdev,
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struct v4l2_device *v4l2_dev,
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struct rkisp_device *dev)
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{
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int ret;
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struct rkisp_vdev_node *node = &stats_vdev->vnode;
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struct video_device *vdev = &node->vdev;
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struct media_entity *source, *sink;
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stats_vdev->dev = dev;
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INIT_LIST_HEAD(&stats_vdev->stat);
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spin_lock_init(&stats_vdev->irq_lock);
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spin_lock_init(&stats_vdev->rd_lock);
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strlcpy(vdev->name, STATS_NAME, sizeof(vdev->name));
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vdev->ioctl_ops = &rkisp_stats_ioctl;
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vdev->fops = &rkisp_stats_fops;
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vdev->release = video_device_release_empty;
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vdev->lock = &dev->iqlock;
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vdev->v4l2_dev = v4l2_dev;
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vdev->queue = &node->buf_queue;
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vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
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vdev->vfl_dir = VFL_DIR_RX;
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rkisp_stats_init_vb2_queue(vdev->queue, stats_vdev);
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rkisp_init_stats_vdev(stats_vdev);
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video_set_drvdata(vdev, stats_vdev);
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node->pad.flags = MEDIA_PAD_FL_SINK;
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ret = media_entity_pads_init(&vdev->entity, 1, &node->pad);
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if (ret < 0)
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goto err_release_queue;
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ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
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if (ret < 0) {
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dev_err(&vdev->dev,
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"could not register Video for Linux device\n");
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goto err_cleanup_media_entity;
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}
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source = &dev->isp_sdev.sd.entity;
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sink = &stats_vdev->vnode.vdev.entity;
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ret = media_create_pad_link(source, RKISP_ISP_PAD_SOURCE_STATS,
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sink, 0, MEDIA_LNK_FL_ENABLED);
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if (ret < 0)
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goto err_unregister_video;
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ret = kfifo_alloc(&stats_vdev->rd_kfifo,
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RKISP_READOUT_WORK_SIZE,
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GFP_KERNEL);
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if (ret) {
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dev_err(&vdev->dev,
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"kfifo_alloc failed with error %d\n",
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ret);
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goto err_unregister_video;
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}
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tasklet_init(&stats_vdev->rd_tasklet,
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rkisp_stats_readout_task,
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(unsigned long)stats_vdev);
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tasklet_disable(&stats_vdev->rd_tasklet);
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return 0;
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err_unregister_video:
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video_unregister_device(vdev);
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err_cleanup_media_entity:
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media_entity_cleanup(&vdev->entity);
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err_release_queue:
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vb2_queue_release(vdev->queue);
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rkisp_uninit_stats_vdev(stats_vdev);
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return ret;
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}
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void rkisp_unregister_stats_vdev(struct rkisp_isp_stats_vdev *stats_vdev)
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{
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struct rkisp_vdev_node *node = &stats_vdev->vnode;
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struct video_device *vdev = &node->vdev;
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kfifo_free(&stats_vdev->rd_kfifo);
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tasklet_kill(&stats_vdev->rd_tasklet);
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video_unregister_device(vdev);
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media_entity_cleanup(&vdev->entity);
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vb2_queue_release(vdev->queue);
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rkisp_uninit_stats_vdev(stats_vdev);
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}
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