Hi Andrzej,
just a few nit picks below...
On 05/22/2012 05:33 PM, Andrzej Hajda wrote:
> s5p-mfc encoder after receiving buffer with flag V4L2_BUF_FLAG_EOS
> will put all buffers cached in device into capture queue.
> It will indicate end of encoded stream by providing empty buffer.
>
> Signed-off-by: Andrzej Hajda<a.ha...@samsung.com>
> Signed-off-by: Kyungmin Park<kyungmin.p...@samsung.com>
> ---
...
> +static void s5p_mfc_handle_complete(struct s5p_mfc_ctx *ctx,
> + unsigned int reason, unsigned int err)
> +{
> + struct s5p_mfc_dev *dev = ctx->dev;
> + struct s5p_mfc_buf *mb_entry;
> + unsigned long flags;
> +
> + mfc_debug(2, "Stream completed");
> +
> + s5p_mfc_clear_int_flags(dev);
> + ctx->int_type = reason;
> + ctx->int_err = err;
> +
> + spin_lock_irqsave(&dev->irqlock, flags);
> + ctx->state = MFCINST_FINISHED;
> +
> + if (!list_empty(&ctx->dst_queue)) {
> + mb_entry = list_entry(ctx->dst_queue.next, struct s5p_mfc_buf,
> + list);
> + list_del(&mb_entry->list);
> + ctx->dst_queue_cnt--;
> + vb2_set_plane_payload(mb_entry->b, 0, 0);
> + vb2_buffer_done(mb_entry->b, VB2_BUF_STATE_DONE);
> + }
> +
> + spin_unlock_irqrestore(&dev->irqlock, flags);
> + if (ctx->dst_queue_cnt == 0) {
> + spin_lock(&dev->condlock);
> + clear_bit(ctx->num,&dev->ctx_work_bits);
> + spin_unlock(&dev->condlock);
This looks a bit odd, since clear_bit is atomic and yet we protect it
with a spinlock.
Perhaps it's worth to add a set_work_bit() function as a pair to existing
clear_work_bit(),
static void clear_work_bit(struct s5p_mfc_dev *dev, unsigned int num)
{
int flags;
spin_lock_irqsave(&dev->condlock, flags);
dev->ctx_work_bits &= ~BIT(num);
spin_unlock_irqrestore(&dev->condlock, flags);
}
static void set_work_bit(struct s5p_mfc_dev *dev, unsigned int num)
{
int flags;
spin_lock_irqsave(&dev->condlock, flags);
dev->ctx_work_bits |= BIT(num);
spin_unlock_irqrestore(&dev->condlock, flags);
}
and replace all occurrences of spin_lock/set_bit/spin_unlock with it?
It's just a tiny optimization though.
> + }
> +
> + if (test_and_clear_bit(0,&dev->hw_lock) == 0)
> + BUG();
Is it really needed, is it unrecoverable system error ? Wouldn't just
WARN_ON() do ? BUG(); seems an to me overkill here.
> +
> + s5p_mfc_clock_off();
> + wake_up(&ctx->queue);
> +}
> +
> /* Interrupt processing */
> static irqreturn_t s5p_mfc_irq(int irq, void *priv)
> {
> @@ -614,6 +653,11 @@ static irqreturn_t s5p_mfc_irq(int irq, void *priv)
> case S5P_FIMV_R2H_CMD_INIT_BUFFERS_RET:
> s5p_mfc_handle_init_buffers(ctx, reason, err);
> break;
> +
> + case S5P_FIMV_R2H_CMD_ENC_COMPLETE_RET:
> + s5p_mfc_handle_complete(ctx, reason, err);
> + break;
> +
> default:
> mfc_debug(2, "Unknown int reason\n");
> s5p_mfc_clear_int_flags(dev);
> diff --git a/drivers/media/video/s5p-mfc/s5p_mfc_enc.c
> b/drivers/media/video/s5p-mfc/s5p_mfc_enc.c
> index acedb20..8dec186 100644
> --- a/drivers/media/video/s5p-mfc/s5p_mfc_enc.c
> +++ b/drivers/media/video/s5p-mfc/s5p_mfc_enc.c
> @@ -584,7 +584,7 @@ static int s5p_mfc_ctx_ready(struct s5p_mfc_ctx *ctx)
> return 1;
> /* context is ready to encode remain frames */
> if (ctx->state == MFCINST_FINISHING&&
> - ctx->src_queue_cnt>= 1&& ctx->dst_queue_cnt>= 1)
> + ctx->dst_queue_cnt>= 1)
> return 1;
> mfc_debug(2, "ctx is not ready\n");
> return 0;
> @@ -1715,15 +1715,8 @@ static void s5p_mfc_buf_queue(struct vb2_buffer *vb)
> mfc_buf =&ctx->src_bufs[vb->v4l2_buf.index];
> mfc_buf->used = 0;
> spin_lock_irqsave(&dev->irqlock, flags);
> - if (vb->v4l2_planes[0].bytesused == 0) {
> - mfc_debug(1, "change state to FINISHING\n");
> - ctx->state = MFCINST_FINISHING;
> - vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
> - cleanup_ref_queue(ctx);
> - } else {
> - list_add_tail(&mfc_buf->list,&ctx->src_queue);
> - ctx->src_queue_cnt++;
> - }
> + list_add_tail(&mfc_buf->list,&ctx->src_queue);
> + ctx->src_queue_cnt++;
> spin_unlock_irqrestore(&dev->irqlock, flags);
> } else {
> mfc_err("unsupported buffer type (%d)\n", vq->type);
> diff --git a/drivers/media/video/s5p-mfc/s5p_mfc_opr.c
> b/drivers/media/video/s5p-mfc/s5p_mfc_opr.c
> index e6217cb..4bcf93f 100644
> --- a/drivers/media/video/s5p-mfc/s5p_mfc_opr.c
> +++ b/drivers/media/video/s5p-mfc/s5p_mfc_opr.c
> @@ -1081,8 +1081,14 @@ int s5p_mfc_encode_one_frame(struct s5p_mfc_ctx *ctx)
> else if (ctx->src_fmt->fourcc == V4L2_PIX_FMT_NV12MT)
> mfc_write(dev, 3, S5P_FIMV_ENC_MAP_FOR_CUR);
> s5p_mfc_set_shared_buffer(ctx);
> - mfc_write(dev, (S5P_FIMV_CH_FRAME_START<< 16& 0x70000) |
> - (ctx->inst_no), S5P_FIMV_SI_CH0_INST_ID);
> +
> + if (ctx->state == MFCINST_FINISHING)
> + mfc_write(dev, ((S5P_FIMV_CH_LAST_FRAME& S5P_FIMV_CH_MASK)<<
> + S5P_FIMV_CH_SHIFT) | (ctx->inst_no), S5P_FIMV_SI_CH0_INST_ID);
Indentation is a bit misleading here.
> + else
> + mfc_write(dev, ((S5P_FIMV_CH_FRAME_START& S5P_FIMV_CH_MASK)<<
> + S5P_FIMV_CH_SHIFT) | (ctx->inst_no), S5P_FIMV_SI_CH0_INST_ID);
> +
> return 0;
> }
--
Regards,
Sylwester
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