This patch adds callback functions, stop_streaming and job_abort,
to abort or finish any DMA in progress. stop_streaming is called
by videobuf2 framework and job_abort is called by m2m framework.
ST_M2M_PEND state is added to discard the next job.
Reviewed-by: Jonghun Han <jonghun.han@xxxxxxxxxxx>
Signed-off-by: Hyunwoong Kim <khw0178.kim@xxxxxxxxxxx>
---
Changes since V1:
- remove the spinlock protections and unnecessay variables
This patch is depended on Hyunwoong Kim's last patch.
- [PATCH v2] [media] s5p-fimc: update checking scaling ratio range
drivers/media/video/s5p-fimc/fimc-core.c | 35 ++++++++++++++++++++++++++++-
drivers/media/video/s5p-fimc/fimc-core.h | 1 +
2 files changed, 34 insertions(+), 2 deletions(-)
diff --git a/drivers/media/video/s5p-fimc/fimc-core.c b/drivers/media/video/s5p-fimc/fimc-core.c
index e608fb8..953a8c1 100644
--- a/drivers/media/video/s5p-fimc/fimc-core.c
+++ b/drivers/media/video/s5p-fimc/fimc-core.c
@@ -305,6 +305,23 @@ int fimc_set_scaler_info(struct fimc_ctx *ctx)
return 0;
}
+static int stop_streaming(struct vb2_queue *q)
+{
+ struct fimc_ctx *ctx = q->drv_priv;
+ struct fimc_dev *fimc = ctx->fimc_dev;
+
+ if (!fimc_m2m_pending(fimc))
+ return 0;
+
+ set_bit(ST_M2M_SHUT, &fimc->state);
+
+ wait_event_timeout(fimc->irq_queue,
+ !test_bit(ST_M2M_SHUT, &fimc->state),
+ FIMC_SHUTDOWN_TIMEOUT);
+
+ return 0;
+}
+
static void fimc_capture_handler(struct fimc_dev *fimc)
{
struct fimc_vid_cap *cap = &fimc->vid_cap;
@@ -356,7 +373,10 @@ static irqreturn_t fimc_isr(int irq, void *priv)
spin_lock(&fimc->slock);
- if (test_and_clear_bit(ST_M2M_PEND, &fimc->state)) {
+ if (test_and_clear_bit(ST_M2M_SHUT, &fimc->state)) {
+ wake_up(&fimc->irq_queue);
+ goto isr_unlock;
+ } else if (test_and_clear_bit(ST_M2M_PEND, &fimc->state)) {
struct vb2_buffer *src_vb, *dst_vb;
struct fimc_ctx *ctx = v4l2_m2m_get_curr_priv(fimc->m2m.m2m_dev);
@@ -636,7 +656,17 @@ dma_unlock:
static void fimc_job_abort(void *priv)
{
- /* Nothing done in job_abort. */
+ struct fimc_ctx *ctx = priv;
+ struct fimc_dev *fimc = ctx->fimc_dev;
+
+ if (!fimc_m2m_pending(fimc))
+ return;
+
+ set_bit(ST_M2M_SHUT, &fimc->state);
+
+ wait_event_timeout(fimc->irq_queue,
+ !test_bit(ST_M2M_SHUT, &fimc->state),
+ FIMC_SHUTDOWN_TIMEOUT);
}
static int fimc_queue_setup(struct vb2_queue *vq, unsigned int *num_buffers,
@@ -713,6 +743,7 @@ struct vb2_ops fimc_qops = {
.buf_queue = fimc_buf_queue,
.wait_prepare = fimc_unlock,
.wait_finish = fimc_lock,
+ .stop_streaming = stop_streaming,
};
static int fimc_m2m_querycap(struct file *file, void *priv,
diff --git a/drivers/media/video/s5p-fimc/fimc-core.h b/drivers/media/video/s5p-fimc/fimc-core.h
index b442fed..b938b41 100644
--- a/drivers/media/video/s5p-fimc/fimc-core.h
+++ b/drivers/media/video/s5p-fimc/fimc-core.h
@@ -51,6 +51,7 @@ enum fimc_dev_flags {
ST_IDLE,
ST_OUTDMA_RUN,
ST_M2M_PEND,
+ ST_M2M_SHUT,
/* for capture node */
ST_CAPT_PEND,
ST_CAPT_RUN,
--
1.6.2.5
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