media: staging: rkisp1: stats: read the stats in the isr
Currently the stats are read in a work queue. Defering the reading of the stats is not needed and it is fine to read them inside the irq handler. This patch fixes and remove the TODO item: 'Use threaded interrupt for rkisp1_stats_isr(), remove work queue.' Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Acked-by: Helen Koike <helen.koike@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Коммит
1fcc0244b5
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@ -1,5 +1,4 @@
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* Fix pad format size for statistics and parameters entities.
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* Use threaded interrupt for rkisp1_stats_isr(), remove work queue.
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* Fix checkpatch errors.
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* Review and comment every lock
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* Handle quantization
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@ -183,7 +183,6 @@ struct rkisp1_capture {
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*
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* @lock: locks the buffer list 'stat' and 'is_streaming'
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* @stat: stats buffer list
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* @readout_wq: workqueue for statistics information read
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*/
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struct rkisp1_stats {
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struct rkisp1_vdev_node vnode;
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@ -193,8 +192,6 @@ struct rkisp1_stats {
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struct list_head stat;
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struct v4l2_format vdev_fmt;
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bool is_streaming;
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struct workqueue_struct *readout_wq;
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};
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/*
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@ -18,21 +18,6 @@
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#define RKISP1_ISP_STATS_REQ_BUFS_MIN 2
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#define RKISP1_ISP_STATS_REQ_BUFS_MAX 8
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enum rkisp1_isp_readout_cmd {
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RKISP1_ISP_READOUT_MEAS,
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RKISP1_ISP_READOUT_META,
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};
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struct rkisp1_isp_readout_work {
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struct work_struct work;
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struct rkisp1_stats *stats;
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unsigned int frame_id;
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unsigned int isp_ris;
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enum rkisp1_isp_readout_cmd readout;
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struct vb2_buffer *vb;
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};
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static int rkisp1_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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@ -154,14 +139,8 @@ static void rkisp1_stats_vb2_stop_streaming(struct vb2_queue *vq)
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struct rkisp1_buffer *buf;
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unsigned int i;
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/* Make sure no new work queued in isr before draining wq */
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spin_lock_irq(&stats->lock);
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stats->is_streaming = false;
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spin_unlock_irq(&stats->lock);
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drain_workqueue(stats->readout_wq);
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spin_lock_irq(&stats->lock);
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for (i = 0; i < RKISP1_ISP_STATS_REQ_BUFS_MAX; i++) {
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if (list_empty(&stats->stat))
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break;
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@ -324,8 +303,7 @@ static void rkisp1_stats_get_bls_meas(struct rkisp1_stats *stats,
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}
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static void
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rkisp1_stats_send_measurement(struct rkisp1_stats *stats,
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struct rkisp1_isp_readout_work *meas_work)
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rkisp1_stats_send_measurement(struct rkisp1_stats *stats, u32 isp_ris)
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{
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struct rkisp1_stat_buffer *cur_stat_buf;
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struct rkisp1_buffer *cur_buf = NULL;
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@ -333,21 +311,12 @@ rkisp1_stats_send_measurement(struct rkisp1_stats *stats,
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atomic_read(&stats->rkisp1->isp.frame_sequence);
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u64 timestamp = ktime_get_ns();
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if (frame_sequence != meas_work->frame_id) {
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dev_warn(stats->rkisp1->dev,
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"Measurement late(%d, %d)\n",
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frame_sequence, meas_work->frame_id);
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frame_sequence = meas_work->frame_id;
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}
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spin_lock_irq(&stats->lock);
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/* get one empty buffer */
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if (!list_empty(&stats->stat)) {
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cur_buf = list_first_entry(&stats->stat,
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struct rkisp1_buffer, queue);
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list_del(&cur_buf->queue);
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}
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spin_unlock_irq(&stats->lock);
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if (!cur_buf)
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return;
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@ -355,18 +324,18 @@ rkisp1_stats_send_measurement(struct rkisp1_stats *stats,
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cur_stat_buf =
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(struct rkisp1_stat_buffer *)(cur_buf->vaddr[0]);
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if (meas_work->isp_ris & RKISP1_CIF_ISP_AWB_DONE)
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if (isp_ris & RKISP1_CIF_ISP_AWB_DONE)
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rkisp1_stats_get_awb_meas(stats, cur_stat_buf);
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if (meas_work->isp_ris & RKISP1_CIF_ISP_AFM_FIN)
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if (isp_ris & RKISP1_CIF_ISP_AFM_FIN)
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rkisp1_stats_get_afc_meas(stats, cur_stat_buf);
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if (meas_work->isp_ris & RKISP1_CIF_ISP_EXP_END) {
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if (isp_ris & RKISP1_CIF_ISP_EXP_END) {
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rkisp1_stats_get_aec_meas(stats, cur_stat_buf);
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rkisp1_stats_get_bls_meas(stats, cur_stat_buf);
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}
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if (meas_work->isp_ris & RKISP1_CIF_ISP_HIST_MEASURE_RDY)
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if (isp_ris & RKISP1_CIF_ISP_HIST_MEASURE_RDY)
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rkisp1_stats_get_hst_meas(stats, cur_stat_buf);
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vb2_set_plane_payload(&cur_buf->vb.vb2_buf, 0,
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@ -376,24 +345,9 @@ rkisp1_stats_send_measurement(struct rkisp1_stats *stats,
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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 rkisp1_stats_readout_work(struct work_struct *work)
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{
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struct rkisp1_isp_readout_work *readout_work =
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container_of(work, struct rkisp1_isp_readout_work, work);
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struct rkisp1_stats *stats = readout_work->stats;
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if (readout_work->readout == RKISP1_ISP_READOUT_MEAS)
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rkisp1_stats_send_measurement(stats, readout_work);
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kfree(readout_work);
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}
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void rkisp1_stats_isr(struct rkisp1_stats *stats, u32 isp_ris)
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{
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unsigned int frame_sequence =
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atomic_read(&stats->rkisp1->isp.frame_sequence);
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struct rkisp1_device *rkisp1 = stats->rkisp1;
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struct rkisp1_isp_readout_work *work;
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unsigned int isp_mis_tmp = 0;
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spin_lock(&stats->lock);
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@ -406,23 +360,8 @@ void rkisp1_stats_isr(struct rkisp1_stats *stats, u32 isp_ris)
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if (!stats->is_streaming)
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goto unlock;
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if (isp_ris & RKISP1_STATS_MEAS_MASK) {
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work = kzalloc(sizeof(*work), GFP_ATOMIC);
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if (work) {
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INIT_WORK(&work->work,
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rkisp1_stats_readout_work);
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work->readout = RKISP1_ISP_READOUT_MEAS;
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work->stats = stats;
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work->frame_id = frame_sequence;
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work->isp_ris = isp_ris;
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if (!queue_work(stats->readout_wq,
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&work->work))
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kfree(work);
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} else {
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dev_err(stats->rkisp1->dev,
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"Could not allocate work\n");
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}
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}
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if (isp_ris & RKISP1_STATS_MEAS_MASK)
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rkisp1_stats_send_measurement(stats, isp_ris);
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unlock:
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spin_unlock(&stats->lock);
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@ -476,19 +415,8 @@ int rkisp1_stats_register(struct rkisp1_stats *stats,
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goto err_cleanup_media_entity;
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}
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stats->readout_wq = alloc_workqueue("measurement_queue",
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WQ_UNBOUND | WQ_MEM_RECLAIM,
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1);
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if (!stats->readout_wq) {
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ret = -ENOMEM;
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goto err_unreg_vdev;
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}
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return 0;
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err_unreg_vdev:
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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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@ -502,7 +430,6 @@ void rkisp1_stats_unregister(struct rkisp1_stats *stats)
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struct rkisp1_vdev_node *node = &stats->vnode;
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struct video_device *vdev = &node->vdev;
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destroy_workqueue(stats->readout_wq);
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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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