diff options
| author | Hyunwoong Kim <khw0178.kim@samsung.com> | 2010-12-29 04:47:49 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-03-21 20:31:40 -0300 |
| commit | 65777e5c58bd3b25fcba39eddb98d8a8ce35d3be (patch) | |
| tree | cb074d62daa7d028364489b3c303c72851a4728b /drivers/media/video | |
| parent | 1b09f292eb99fd6a3601e8421c463905dbb0a866 (diff) | |
[media] s5p-fimc: Support stop_streaming and job_abort
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@samsung.com>
Signed-off-by: Hyunwoong Kim <khw0178.kim@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video')
| -rw-r--r-- | drivers/media/video/s5p-fimc/fimc-core.c | 35 | ||||
| -rw-r--r-- | 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 560cd21dae28..cd8a3003f1aa 100644 --- a/drivers/media/video/s5p-fimc/fimc-core.c +++ b/drivers/media/video/s5p-fimc/fimc-core.c @@ -307,6 +307,23 @@ 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; @@ -358,7 +375,10 @@ 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); @@ -634,7 +654,17 @@ 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, @@ -711,6 +741,7 @@ 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 57bff0d21962..4829a2515076 100644 --- a/drivers/media/video/s5p-fimc/fimc-core.h +++ b/drivers/media/video/s5p-fimc/fimc-core.h @@ -57,6 +57,7 @@ enum fimc_dev_flags { ST_IDLE, ST_OUTDMA_RUN, ST_M2M_PEND, + ST_M2M_SHUT, /* for capture node */ ST_CAPT_PEND, ST_CAPT_RUN, |