// 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-vmalloc.h> /* for ISP statistics */
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#include "dev.h"
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#include "regs.h"
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#include "isp_mipi_luma.h"
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#define RKISP_ISP_LUMA_REQ_BUFS_MIN 2
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#define RKISP_ISP_LUMA_REQ_BUFS_MAX 8
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static int rkisp_luma_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_luma_vdev *luma_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 = luma_vdev->vdev_fmt.fmt.meta.dataformat;
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return 0;
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}
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static int rkisp_luma_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_luma_vdev *luma_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 = luma_vdev->vdev_fmt.fmt.meta.dataformat;
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meta->buffersize = luma_vdev->vdev_fmt.fmt.meta.buffersize;
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return 0;
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}
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static int rkisp_luma_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_luma_vdev *luma_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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luma_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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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_luma_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_luma_enum_fmt_meta_cap,
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.vidioc_g_fmt_meta_cap = rkisp_luma_g_fmt_meta_cap,
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.vidioc_s_fmt_meta_cap = rkisp_luma_g_fmt_meta_cap,
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.vidioc_try_fmt_meta_cap = rkisp_luma_g_fmt_meta_cap,
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.vidioc_querycap = rkisp_luma_querycap
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};
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static int rkisp_luma_fh_open(struct file *filp)
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{
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struct rkisp_luma_vdev *params = video_drvdata(filp);
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int ret;
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if (!params->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(¶ms->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_luma_fop_release(struct file *file)
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{
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struct rkisp_luma_vdev *luma = 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(&luma->vnode.vdev.entity);
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return ret;
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}
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struct v4l2_file_operations rkisp_luma_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_luma_fh_open,
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.release = rkisp_luma_fop_release
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};
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static int rkisp_luma_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_luma_vdev *luma_vdev = vq->drv_priv;
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*num_planes = 1;
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*num_buffers = clamp_t(u32, *num_buffers, RKISP_ISP_LUMA_REQ_BUFS_MIN,
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RKISP_ISP_LUMA_REQ_BUFS_MAX);
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sizes[0] = sizeof(struct rkisp_isp2x_luma_buffer);
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INIT_LIST_HEAD(&luma_vdev->stat);
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return 0;
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}
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static void rkisp_luma_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 *luma_buf = to_rkisp_buffer(vbuf);
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struct vb2_queue *vq = vb->vb2_queue;
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struct rkisp_luma_vdev *luma_dev = vq->drv_priv;
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luma_buf->vaddr[0] = vb2_plane_vaddr(vb, 0);
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spin_lock_bh(&luma_dev->rd_lock);
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list_add_tail(&luma_buf->queue, &luma_dev->stat);
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spin_unlock_bh(&luma_dev->rd_lock);
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}
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static void rkisp_luma_vb2_stop_streaming(struct vb2_queue *vq)
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{
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struct rkisp_luma_vdev *luma_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(&luma_vdev->irq_lock, flags);
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luma_vdev->streamon = false;
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spin_unlock_irqrestore(&luma_vdev->irq_lock, flags);
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tasklet_disable(&luma_vdev->rd_tasklet);
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spin_lock_bh(&luma_vdev->rd_lock);
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for (i = 0; i < RKISP_ISP_LUMA_REQ_BUFS_MAX; i++) {
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if (list_empty(&luma_vdev->stat))
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break;
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buf = list_first_entry(&luma_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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spin_unlock_bh(&luma_vdev->rd_lock);
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}
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static int
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rkisp_luma_vb2_start_streaming(struct vb2_queue *queue,
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unsigned int count)
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{
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struct rkisp_luma_vdev *luma_vdev = queue->drv_priv;
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u32 i;
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for (i = 0; i < ISP2X_MIPI_RAW_MAX; i++) {
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luma_vdev->ystat_isrcnt[i] = 0;
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luma_vdev->ystat_rdflg[i] = false;
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}
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luma_vdev->streamon = true;
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kfifo_reset(&luma_vdev->rd_kfifo);
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tasklet_enable(&luma_vdev->rd_tasklet);
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return 0;
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}
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static struct vb2_ops rkisp_luma_vb2_ops = {
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.queue_setup = rkisp_luma_vb2_queue_setup,
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.buf_queue = rkisp_luma_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_luma_vb2_stop_streaming,
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.start_streaming = rkisp_luma_vb2_start_streaming,
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};
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static int rkisp_luma_init_vb2_queue(struct vb2_queue *q,
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struct rkisp_luma_vdev *luma_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 = luma_vdev;
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q->ops = &rkisp_luma_vb2_ops;
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q->mem_ops = &vb2_vmalloc_memops;
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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 = &luma_vdev->dev->iqlock;
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q->dev = luma_vdev->dev->dev;
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return vb2_queue_init(q);
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}
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static void
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rkisp_stats_send_luma(struct rkisp_luma_vdev *vdev,
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struct rkisp_luma_readout_work *work)
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{
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unsigned int cur_frame_id;
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struct rkisp_isp2x_luma_buffer *cur_stat_buf;
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struct rkisp_buffer *cur_buf = NULL;
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u32 i, j;
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spin_lock(&vdev->rd_lock);
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/* get one empty buffer */
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if (!list_empty(&vdev->stat)) {
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cur_buf = list_first_entry(&vdev->stat,
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struct rkisp_buffer, queue);
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list_del(&cur_buf->queue);
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}
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spin_unlock(&vdev->rd_lock);
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if (!cur_buf) {
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v4l2_warn(vdev->vnode.vdev.v4l2_dev,
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"no luma buffer available\n");
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return;
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}
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cur_stat_buf =
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(struct rkisp_isp2x_luma_buffer *)(cur_buf->vaddr[0]);
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if (!cur_stat_buf) {
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v4l2_err(vdev->vnode.vdev.v4l2_dev,
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"cur_stat_buf is NULL\n");
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return;
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}
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cur_stat_buf->frame_id = work->frame_id;
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cur_stat_buf->meas_type = work->meas_type;
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for (i = 0; i < ISP2X_MIPI_RAW_MAX; i++) {
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for (j = 0; j < ISP2X_MIPI_LUMA_MEAN_MAX; j++) {
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cur_stat_buf->luma[i].exp_mean[j] =
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work->luma[i].exp_mean[j];
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}
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}
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cur_frame_id = cur_stat_buf->frame_id;
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vb2_set_plane_payload(&cur_buf->vb.vb2_buf, 0,
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sizeof(struct rkisp_isp2x_luma_buffer));
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cur_buf->vb.sequence = cur_frame_id;
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cur_buf->vb.vb2_buf.timestamp = work->timestamp;
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vb2_buffer_done(&cur_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
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}
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static void rkisp_luma_readout_task(unsigned long data)
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{
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unsigned int out = 0;
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struct rkisp_luma_readout_work work;
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struct rkisp_luma_vdev *vdev =
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(struct rkisp_luma_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_LUMA)
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rkisp_stats_send_luma(vdev, &work);
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}
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}
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void rkisp_luma_isr(struct rkisp_luma_vdev *luma_vdev, u32 isp_stat)
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{
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void __iomem *base = luma_vdev->dev->base_addr;
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u8 op_mode = luma_vdev->dev->hdr.op_mode;
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unsigned int cur_frame_id =
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atomic_read(&luma_vdev->dev->isp_sdev.frm_sync_seq) - 1;
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enum rkisp_luma_frm_mode frm_mode;
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bool send_task;
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u32 i, value;
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spin_lock(&luma_vdev->irq_lock);
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if (!luma_vdev->streamon)
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goto unlock;
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switch (op_mode) {
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case HDR_RDBK_FRAME2:
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frm_mode = RKISP_LUMA_TWOFRM;
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break;
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case HDR_RDBK_FRAME3:
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frm_mode = RKISP_LUMA_THREEFRM;
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break;
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case HDR_RDBK_FRAME1:
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frm_mode = RKISP_LUMA_ONEFRM;
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break;
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default:
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goto unlock;
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}
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if (isp_stat & RAW0_Y_STATE)
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luma_vdev->ystat_isrcnt[0]++;
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if (isp_stat & RAW1_Y_STATE)
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luma_vdev->ystat_isrcnt[1]++;
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if (isp_stat & RAW2_Y_STATE)
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luma_vdev->ystat_isrcnt[2]++;
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if (isp_stat & RAW0_WR_FRAME) {
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if (luma_vdev->ystat_isrcnt[0] != RKISP_LUMA_YSTAT_ISR_NUM) {
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v4l2_dbg(1, rkisp_debug, luma_vdev->vnode.vdev.v4l2_dev,
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"missing raw0 y state isr, %d\n",
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luma_vdev->ystat_isrcnt[0]);
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luma_vdev->ystat_isrcnt[0] = RKISP_LUMA_YSTAT_ISR_NUM;
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}
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}
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if (isp_stat & RAW1_WR_FRAME) {
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if (luma_vdev->ystat_isrcnt[1] != RKISP_LUMA_YSTAT_ISR_NUM) {
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v4l2_dbg(1, rkisp_debug, luma_vdev->vnode.vdev.v4l2_dev,
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"missing raw1 y state isr, %d\n",
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luma_vdev->ystat_isrcnt[1]);
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luma_vdev->ystat_isrcnt[1] = RKISP_LUMA_YSTAT_ISR_NUM;
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}
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}
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if (isp_stat & RAW2_WR_FRAME) {
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if (luma_vdev->ystat_isrcnt[2] != RKISP_LUMA_YSTAT_ISR_NUM) {
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v4l2_dbg(1, rkisp_debug, luma_vdev->vnode.vdev.v4l2_dev,
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"missing raw2 y state isr, %d\n",
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luma_vdev->ystat_isrcnt[2]);
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luma_vdev->ystat_isrcnt[2] = RKISP_LUMA_YSTAT_ISR_NUM;
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}
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}
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if (luma_vdev->ystat_isrcnt[0] == RKISP_LUMA_YSTAT_ISR_NUM && !luma_vdev->ystat_rdflg[0]) {
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value = readl(base + CSI2RX_Y_STAT_CTRL);
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value &= ~(SW_Y_STAT_RD_FRM_ID(0x3));
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value |= (SW_Y_STAT_RD_FRM_ID(0x0) | SW_Y_STAT_RD_EN);
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writel(value, base + CSI2RX_Y_STAT_CTRL);
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for (i = 0; i < ISP2X_MIPI_LUMA_MEAN_MAX; i++)
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luma_vdev->work.luma[0].exp_mean[i] =
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readl(base + CSI2RX_Y_STAT_RO);
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luma_vdev->ystat_rdflg[0] = true;
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}
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if (luma_vdev->ystat_isrcnt[1] == RKISP_LUMA_YSTAT_ISR_NUM && !luma_vdev->ystat_rdflg[1]) {
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value = readl(base + CSI2RX_Y_STAT_CTRL);
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value &= ~(SW_Y_STAT_RD_FRM_ID(0x3));
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value |= (SW_Y_STAT_RD_FRM_ID(0x1) | SW_Y_STAT_RD_EN);
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writel(value, base + CSI2RX_Y_STAT_CTRL);
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for (i = 0; i < ISP2X_MIPI_LUMA_MEAN_MAX; i++)
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luma_vdev->work.luma[1].exp_mean[i] =
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readl(base + CSI2RX_Y_STAT_RO);
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luma_vdev->ystat_rdflg[1] = true;
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}
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if (luma_vdev->ystat_isrcnt[2] == RKISP_LUMA_YSTAT_ISR_NUM && !luma_vdev->ystat_rdflg[2]) {
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value = readl(base + CSI2RX_Y_STAT_CTRL);
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value &= ~(SW_Y_STAT_RD_FRM_ID(0x3));
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value |= (SW_Y_STAT_RD_FRM_ID(0x2) | SW_Y_STAT_RD_EN);
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writel(value, base + CSI2RX_Y_STAT_CTRL);
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for (i = 0; i < ISP2X_MIPI_LUMA_MEAN_MAX; i++)
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luma_vdev->work.luma[2].exp_mean[i] =
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readl(base + CSI2RX_Y_STAT_RO);
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luma_vdev->ystat_rdflg[2] = true;
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}
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send_task = false;
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if (frm_mode == RKISP_LUMA_THREEFRM) {
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if (luma_vdev->ystat_rdflg[0] && luma_vdev->ystat_rdflg[1] &&
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luma_vdev->ystat_rdflg[2])
|
send_task = true;
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} else if (frm_mode == RKISP_LUMA_TWOFRM) {
|
if (luma_vdev->ystat_rdflg[0] && luma_vdev->ystat_rdflg[2])
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send_task = true;
|
} else {
|
if (luma_vdev->ystat_rdflg[2])
|
send_task = true;
|
}
|
|
if (send_task) {
|
luma_vdev->work.readout = RKISP_ISP_READOUT_LUMA;
|
luma_vdev->work.timestamp = rkisp_time_get_ns(luma_vdev->dev);
|
luma_vdev->work.frame_id = cur_frame_id;
|
|
if (frm_mode == RKISP_LUMA_THREEFRM)
|
luma_vdev->work.meas_type = ISP2X_RAW0_Y_STATE | ISP2X_RAW1_Y_STATE |
|
ISP2X_RAW2_Y_STATE;
|
else if (frm_mode == RKISP_LUMA_TWOFRM)
|
luma_vdev->work.meas_type = ISP2X_RAW0_Y_STATE | ISP2X_RAW2_Y_STATE;
|
else
|
luma_vdev->work.meas_type = ISP2X_RAW2_Y_STATE;
|
|
if (!kfifo_is_full(&luma_vdev->rd_kfifo))
|
kfifo_in(&luma_vdev->rd_kfifo,
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&luma_vdev->work, sizeof(luma_vdev->work));
|
else
|
v4l2_err(luma_vdev->vnode.vdev.v4l2_dev,
|
"stats kfifo is full\n");
|
|
tasklet_schedule(&luma_vdev->rd_tasklet);
|
|
for (i = 0; i < ISP2X_MIPI_RAW_MAX; i++) {
|
luma_vdev->ystat_isrcnt[i] = 0;
|
luma_vdev->ystat_rdflg[i] = false;
|
}
|
|
memset(&luma_vdev->work, 0, sizeof(luma_vdev->work));
|
}
|
|
unlock:
|
spin_unlock(&luma_vdev->irq_lock);
|
}
|
|
static void rkisp_init_luma_vdev(struct rkisp_luma_vdev *luma_vdev)
|
{
|
luma_vdev->vdev_fmt.fmt.meta.dataformat =
|
V4L2_META_FMT_RK_ISP1_STAT_LUMA;
|
luma_vdev->vdev_fmt.fmt.meta.buffersize =
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sizeof(struct rkisp_isp2x_luma_buffer);
|
}
|
|
int rkisp_register_luma_vdev(struct rkisp_luma_vdev *luma_vdev,
|
struct v4l2_device *v4l2_dev,
|
struct rkisp_device *dev)
|
{
|
int ret;
|
struct rkisp_vdev_node *node = &luma_vdev->vnode;
|
struct video_device *vdev = &node->vdev;
|
struct media_entity *source, *sink;
|
|
luma_vdev->dev = dev;
|
if (dev->isp_ver != ISP_V20)
|
return 0;
|
|
INIT_LIST_HEAD(&luma_vdev->stat);
|
spin_lock_init(&luma_vdev->irq_lock);
|
spin_lock_init(&luma_vdev->rd_lock);
|
|
strlcpy(vdev->name, "rkisp-mipi-luma", sizeof(vdev->name));
|
|
vdev->ioctl_ops = &rkisp_luma_ioctl;
|
vdev->fops = &rkisp_luma_fops;
|
vdev->release = video_device_release_empty;
|
vdev->lock = &dev->iqlock;
|
vdev->v4l2_dev = v4l2_dev;
|
vdev->queue = &node->buf_queue;
|
vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
|
vdev->vfl_dir = VFL_DIR_RX;
|
rkisp_luma_init_vb2_queue(vdev->queue, luma_vdev);
|
rkisp_init_luma_vdev(luma_vdev);
|
video_set_drvdata(vdev, luma_vdev);
|
|
node->pad.flags = MEDIA_PAD_FL_SINK;
|
ret = media_entity_pads_init(&vdev->entity, 1, &node->pad);
|
if (ret < 0)
|
goto err_release_queue;
|
|
ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
|
if (ret < 0) {
|
dev_err(&vdev->dev,
|
"could not register Video for Linux device\n");
|
goto err_cleanup_media_entity;
|
}
|
|
source = &dev->isp_sdev.sd.entity;
|
sink = &luma_vdev->vnode.vdev.entity;
|
ret = media_create_pad_link(source, RKISP_ISP_PAD_SOURCE_STATS,
|
sink, 0, MEDIA_LNK_FL_ENABLED);
|
if (ret < 0)
|
goto err_unregister_video;
|
|
ret = kfifo_alloc(&luma_vdev->rd_kfifo,
|
RKISP_LUMA_READOUT_WORK_SIZE,
|
GFP_KERNEL);
|
if (ret) {
|
dev_err(&vdev->dev,
|
"kfifo_alloc failed with error %d\n",
|
ret);
|
goto err_unregister_video;
|
}
|
|
tasklet_init(&luma_vdev->rd_tasklet,
|
rkisp_luma_readout_task,
|
(unsigned long)luma_vdev);
|
tasklet_disable(&luma_vdev->rd_tasklet);
|
|
return 0;
|
|
err_unregister_video:
|
video_unregister_device(vdev);
|
err_cleanup_media_entity:
|
media_entity_cleanup(&vdev->entity);
|
err_release_queue:
|
vb2_queue_release(vdev->queue);
|
return ret;
|
}
|
|
void rkisp_unregister_luma_vdev(struct rkisp_luma_vdev *luma_vdev)
|
{
|
struct rkisp_vdev_node *node = &luma_vdev->vnode;
|
struct video_device *vdev = &node->vdev;
|
|
if (luma_vdev->dev->isp_ver != ISP_V20)
|
return;
|
kfifo_free(&luma_vdev->rd_kfifo);
|
tasklet_kill(&luma_vdev->rd_tasklet);
|
video_unregister_device(vdev);
|
media_entity_cleanup(&vdev->entity);
|
vb2_queue_release(vdev->queue);
|
}
|
