diff options
authorPawel Osciak <posciak@chromium.org>2014-05-19 18:02:57 +0530
committerKamil Debski <k.debski@samsung.com>2014-05-19 16:05:57 +0200
commitb0a90957ed6c8b16e9b6e32827e4b048a4cff938 (patch)
parent6f3865c9276ba3e587191150f3b5735869d7fc4d (diff)
s5p-mfc: Copy timestamps only when a frame is produced.
Timestamps for destination buffers are assigned by copying them from corresponding source buffers when the decode operation results in a frame being outputted to a destination buffer. But the decision when to do this, i.e. whether the decode operation on current source buffer produced a destination frame, is wrongly based on "display status". Display status reflects the status of the destination buffer, not source. This used to work for firmwares version <= 6, because in addition to the above, we'd check the decoded frame type register, which was set to "skipped" if a destination frame was not produced, exiting early from s5p_mfc_handle_frame_new(). Firmware >=7 does not set the frame type register for frames that were not decoded anymore though, which results in us wrongly overwriting timestamps of previously decoded buffers (firmware reports the same destination buffer address as previously decoded one if a frame wasn't decoded during current operation). To do it properly, we should be basing our decision to copy the timestamp on the status of the source buffer, i.e. "decode status". The decode status register values are confusing, because in its case "display" means "a frame has been outputted to a destination buffer". We should copy if "decode and display" is returned in it. This also works on <= v6 firmware, which behaves in the same way with regards to decode status register. Signed-off-by: Pawel Osciak <posciak@chromium.org> Signed-off-by: Arun Kumar K <arun.kk@samsung.com> Signed-off-by: Kamil Debski <k.debski@samsung.com>
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc.c b/drivers/media/platform/s5p-mfc/s5p_mfc.c
index 89356ae90238..6ef6bd10c18e 100644
--- a/drivers/media/platform/s5p-mfc/s5p_mfc.c
+++ b/drivers/media/platform/s5p-mfc/s5p_mfc.c
@@ -309,12 +309,15 @@ static void s5p_mfc_handle_frame(struct s5p_mfc_ctx *ctx,
struct s5p_mfc_dev *dev = ctx->dev;
unsigned int dst_frame_status;
+ unsigned int dec_frame_status;
struct s5p_mfc_buf *src_buf;
unsigned long flags;
unsigned int res_change;
dst_frame_status = s5p_mfc_hw_call(dev->mfc_ops, get_dspl_status, dev)
+ dec_frame_status = s5p_mfc_hw_call(dev->mfc_ops, get_dec_status, dev)
res_change = (s5p_mfc_hw_call(dev->mfc_ops, get_dspl_status, dev)
@@ -347,8 +350,7 @@ static void s5p_mfc_handle_frame(struct s5p_mfc_ctx *ctx,
- if (dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY ||
- dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_ONLY)
+ if (dec_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY)
/* A frame has been decoded and is in the buffer */

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