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[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>
This commit is contained in:
Hyunwoong Kim 2010-12-29 04:47:49 -03:00 committed by Mauro Carvalho Chehab
parent 1b09f292eb
commit 65777e5c58
2 changed files with 34 additions and 2 deletions
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35
drivers/media/video/s5p-fimc/fimc-core.c
View File

@ -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,

1
drivers/media/video/s5p-fimc/fimc-core.h
View File

@ -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,