These patches are related and it may be summarized as follows. 1. Some of the case are fimc H/W did not stop although there are no available output DMA buffer. So, it is modified check the routine fimc deactivation. And, the state of ST_CAPT_RUN is cleared in LAST-IRQ routine. 2. When request buffer count is less than 4, CIOYSAn register did not set if VIDIOC_QBUF is called repeatedly. So, clear bit the state of ST_CAPT_STREAM in ISR. 3. Because fimc interrupt generated when the frame start to write, it is necessary to use LAST-IRQ for processing of the last frame. So, added the enumeration for LAST-IRQ. 4. After LAST-IRQ is generated, H/W pointer will be skip 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> --- This patch is depended on: http://git.infradead.org/users/kmpark/linux-2.6-samsung/shortlog/refs/heads/vb2-mfc-fimc drivers/media/video/s5p-fimc/fimc-capture.c | 12 +++++++----- drivers/media/video/s5p-fimc/fimc-core.c | 20 ++++++++++++++------ drivers/media/video/s5p-fimc/fimc-core.h | 1 + 3 files changed, 22 insertions(+), 11 deletions(-) diff --git a/drivers/media/video/s5p-fimc/fimc-capture.c b/drivers/media/video/s5p-fimc/fimc-capture.c index 4e4441f..0a3b344 100644 --- a/drivers/media/video/s5p-fimc/fimc-capture.c +++ b/drivers/media/video/s5p-fimc/fimc-capture.c @@ -350,13 +350,15 @@ static void buffer_queue(struct vb2_buffer *vb) dbg("active_buf_cnt: %d", fimc->vid_cap.active_buf_cnt); - 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)) { + if (vid_cap->active_buf_cnt == FIMC_MAX_OUT_BUFS) + set_bit(ST_CAPT_STREAM, &fimc->state); + + if (test_bit(ST_CAPT_LAST_IRQ, &fimc->state) || + !test_bit(ST_CAPT_RUN, &fimc->state)) { fimc_activate_capture(ctx); - dbg(""); - } + clear_bit(ST_CAPT_LAST_IRQ, &fimc->state); } + 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 2374fd8..4a85966 100644 --- a/drivers/media/video/s5p-fimc/fimc-core.c +++ b/drivers/media/video/s5p-fimc/fimc-core.c @@ -334,9 +334,14 @@ static void fimc_capture_handler(struct fimc_dev *fimc) if (++cap->buf_index >= FIMC_MAX_OUT_BUFS) cap->buf_index = 0; - } else if (test_and_clear_bit(ST_CAPT_STREAM, &fimc->state) && - cap->active_buf_cnt <= 1) { - fimc_deactivate_capture(fimc); + } else { + clear_bit(ST_CAPT_STREAM, &fimc->state); + } + + if (cap->active_buf_cnt == 0) { + clear_bit(ST_CAPT_RUN, &fimc->state); + if (++cap->buf_index >= FIMC_MAX_OUT_BUFS) + cap->buf_index = 0; } dbg("frame: %d, active_buf_cnt= %d", @@ -346,6 +351,7 @@ static void fimc_capture_handler(struct fimc_dev *fimc) 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); @@ -372,10 +378,12 @@ static irqreturn_t fimc_isr(int irq, void *priv) if (test_bit(ST_CAPT_RUN, &fimc->state)) fimc_capture_handler(fimc); - - if (test_and_clear_bit(ST_CAPT_PEND, &fimc->state)) { + else if (test_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); + set_bit(ST_CAPT_LAST_IRQ, &fimc->state); } isr_unlock: diff --git a/drivers/media/video/s5p-fimc/fimc-core.h b/drivers/media/video/s5p-fimc/fimc-core.h index 1f1beaa..58cb2e0 100644 --- a/drivers/media/video/s5p-fimc/fimc-core.h +++ b/drivers/media/video/s5p-fimc/fimc-core.h @@ -56,6 +56,7 @@ enum fimc_dev_flags { ST_CAPT_RUN, ST_CAPT_STREAM, ST_CAPT_SHUT, + ST_CAPT_LAST_IRQ, }; #define fimc_m2m_active(dev) test_bit(ST_OUTDMA_RUN, &(dev)->state) -- 1.6.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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