From: Sungchun Kang <sungchun.kang@xxxxxxxxxxx>
In some cases fimc H/W did not stop although there were no output
buffers available. So the capture deactivation interrupt routine
is modified and the state of ST_CAPT_RUN is cleared only
in the LAST-IRQ call.
After LAST-IRQ is generated, H/W pointer will be skipped by 1 frame.
(reference by user manual) So, S/W pointer should be increased too.
Reviewed-by Jonghun Han <jonghun.han@xxxxxxxxxxx>
Signed-off-by: Sungchun Kang <sungchun.kang@xxxxxxxxxxx>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
---
drivers/media/video/s5p-fimc/fimc-capture.c | 70 ++++++++++-----------------
drivers/media/video/s5p-fimc/fimc-core.c | 33 +++++++-----
2 files changed, 45 insertions(+), 58 deletions(-)
diff --git a/drivers/media/video/s5p-fimc/fimc-capture.c b/drivers/media/video/s5p-fimc/fimc-capture.c
index 5159cc8..6b6f72e 100644
--- a/drivers/media/video/s5p-fimc/fimc-capture.c
+++ b/drivers/media/video/s5p-fimc/fimc-capture.c
@@ -153,40 +153,6 @@ static int fimc_isp_subdev_init(struct fimc_dev *fimc, unsigned int index)
return ret;
}
-/*
- * At least one buffer on the pending_buf_q queue is required.
- * Locking: The caller holds fimc->slock spinlock.
- */
-int fimc_vid_cap_buf_queue(struct fimc_dev *fimc,
- struct fimc_vid_buffer *fimc_vb)
-{
- struct fimc_vid_cap *cap = &fimc->vid_cap;
- struct fimc_ctx *ctx = cap->ctx;
- int ret = 0;
-
- BUG_ON(!fimc || !fimc_vb);
-
- ret = fimc_prepare_addr(ctx, &fimc_vb->vb, &ctx->d_frame,
- &fimc_vb->paddr);
- if (ret)
- return ret;
-
- if (test_bit(ST_CAPT_STREAM, &fimc->state)) {
- fimc_pending_queue_add(cap, fimc_vb);
- } else {
- /* Setup the buffer directly for processing. */
- int buf_id = (cap->reqbufs_count == 1) ? -1 : cap->buf_index;
- fimc_hw_set_output_addr(fimc, &fimc_vb->paddr, buf_id);
-
- fimc_vb->index = cap->buf_index;
- active_queue_add(cap, fimc_vb);
-
- if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
- cap->buf_index = 0;
- }
- return ret;
-}
-
static int fimc_stop_capture(struct fimc_dev *fimc)
{
unsigned long flags;
@@ -211,7 +177,7 @@ static int fimc_stop_capture(struct fimc_dev *fimc)
spin_lock_irqsave(&fimc->slock, flags);
fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_PEND |
- 1 << ST_CAPT_STREAM);
+ 1 << ST_CAPT_SHUT | 1 << ST_CAPT_STREAM);
fimc->vid_cap.active_buf_cnt = 0;
@@ -239,6 +205,8 @@ static int start_streaming(struct vb2_queue *q)
struct s5p_fimc_isp_info *isp_info;
int ret;
+ fimc_hw_reset(fimc);
+
ret = v4l2_subdev_call(fimc->vid_cap.sd, video, s_stream, 1);
if (ret && ret != -ENOIOCTLCMD)
return ret;
@@ -273,7 +241,7 @@ static int start_streaming(struct vb2_queue *q)
INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
fimc->vid_cap.active_buf_cnt = 0;
fimc->vid_cap.frame_count = 0;
- fimc->vid_cap.buf_index = fimc_hw_get_frame_index(fimc);
+ fimc->vid_cap.buf_index = 0;
set_bit(ST_CAPT_PEND, &fimc->state);
@@ -372,19 +340,33 @@ static void buffer_queue(struct vb2_buffer *vb)
= container_of(vb, struct fimc_vid_buffer, vb);
struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
unsigned long flags;
+ int min_bufs;
spin_lock_irqsave(&fimc->slock, flags);
- fimc_vid_cap_buf_queue(fimc, buf);
+ fimc_prepare_addr(ctx, &buf->vb, &ctx->d_frame, &buf->paddr);
+
+ if (!test_bit(ST_CAPT_STREAM, &fimc->state)
+ && vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) {
+ /* Setup the buffer directly for processing. */
+ int buf_id = (vid_cap->reqbufs_count == 1) ? -1 :
+ vid_cap->buf_index;
- dbg("active_buf_cnt: %d", fimc->vid_cap.active_buf_cnt);
+ fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id);
+ buf->index = vid_cap->buf_index;
+ active_queue_add(vid_cap, buf);
- if (vid_cap->active_buf_cnt >= vid_cap->reqbufs_count ||
- vid_cap->active_buf_cnt >= FIMC_MAX_OUT_BUFS) {
- if (!test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) {
- fimc_activate_capture(ctx);
- dbg("");
- }
+ if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS)
+ vid_cap->buf_index = 0;
+ } else {
+ fimc_pending_queue_add(vid_cap, buf);
}
+
+ min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1;
+
+ if (vid_cap->active_buf_cnt >= min_bufs &&
+ !test_and_set_bit(ST_CAPT_STREAM, &fimc->state))
+ fimc_activate_capture(ctx);
+
spin_unlock_irqrestore(&fimc->slock, flags);
}
diff --git a/drivers/media/video/s5p-fimc/fimc-core.c b/drivers/media/video/s5p-fimc/fimc-core.c
index cd8a300..fdf4270 100644
--- a/drivers/media/video/s5p-fimc/fimc-core.c
+++ b/drivers/media/video/s5p-fimc/fimc-core.c
@@ -327,9 +327,10 @@ static int stop_streaming(struct vb2_queue *q)
static void fimc_capture_handler(struct fimc_dev *fimc)
{
struct fimc_vid_cap *cap = &fimc->vid_cap;
- struct fimc_vid_buffer *v_buf = NULL;
+ struct fimc_vid_buffer *v_buf;
- if (!list_empty(&cap->active_buf_q)) {
+ if (!list_empty(&cap->active_buf_q) &&
+ test_bit(ST_CAPT_RUN, &fimc->state)) {
v_buf = active_queue_pop(cap);
vb2_buffer_done(&v_buf->vb, VB2_BUF_STATE_DONE);
}
@@ -345,9 +346,6 @@ static void fimc_capture_handler(struct fimc_dev *fimc)
fimc_hw_set_output_addr(fimc, &v_buf->paddr, cap->buf_index);
v_buf->index = cap->buf_index;
- dbg("hw ptr: %d, sw ptr: %d",
- fimc_hw_get_frame_index(fimc), cap->buf_index);
-
/* Move the buffer to the capture active queue */
active_queue_add(cap, v_buf);
@@ -356,19 +354,25 @@ static void fimc_capture_handler(struct fimc_dev *fimc)
if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
cap->buf_index = 0;
+ }
+
+ if (cap->active_buf_cnt == 0) {
+ clear_bit(ST_CAPT_RUN, &fimc->state);
- } else if (test_and_clear_bit(ST_CAPT_STREAM, &fimc->state) &&
- cap->active_buf_cnt <= 1) {
- fimc_deactivate_capture(fimc);
+ if (++cap->buf_index >= FIMC_MAX_OUT_BUFS)
+ cap->buf_index = 0;
+ } else {
+ set_bit(ST_CAPT_RUN, &fimc->state);
}
- dbg("frame: %d, active_buf_cnt= %d",
+ dbg("frame: %d, active_buf_cnt: %d",
fimc_hw_get_frame_index(fimc), cap->active_buf_cnt);
}
static irqreturn_t fimc_isr(int irq, void *priv)
{
struct fimc_dev *fimc = priv;
+ struct fimc_vid_cap *cap = &fimc->vid_cap;
BUG_ON(!fimc);
fimc_hw_clear_irq(fimc);
@@ -396,12 +400,13 @@ static irqreturn_t fimc_isr(int irq, void *priv)
}
- if (test_bit(ST_CAPT_RUN, &fimc->state))
- fimc_capture_handler(fimc);
+ if (test_bit(ST_CAPT_PEND, &fimc->state)) {
+ fimc_capture_irq_handler(fimc);
- if (test_and_clear_bit(ST_CAPT_PEND, &fimc->state)) {
- set_bit(ST_CAPT_RUN, &fimc->state);
- wake_up(&fimc->irq_queue);
+ if (cap->active_buf_cnt == 1) {
+ fimc_deactivate_capture(fimc);
+ clear_bit(ST_CAPT_STREAM, &fimc->state);
+ }
}
isr_unlock:
--
1.7.4.1
--
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