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Subject: media: coda: fix decoder sequence init escape flag
Author: Philipp Zabel <p.za...@pengutronix.de>
Date: Fri Jul 28 09:26:25 2017 -0400
coda_command_sync calls coda_command_async, which writes the
bit_stream_param context variable into the BIT_STREAM_PARAM register,
overwriting the previously set value during coda_start_decoding. Instead
of writing to the register, set bit_stream_param to ensure that the
decoder sequence init command is executed with the escape flag set.
Signed-off-by: Philipp Zabel <p.za...@pengutronix.de>
Signed-off-by: Hans Verkuil <hans.verk...@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mche...@s-opensource.com>
drivers/media/platform/coda/coda-bit.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
---
diff --git a/drivers/media/platform/coda/coda-bit.c
b/drivers/media/platform/coda/coda-bit.c
index 95e4b74d5dd0..291c40933935 100644
--- a/drivers/media/platform/coda/coda-bit.c
+++ b/drivers/media/platform/coda/coda-bit.c
@@ -1639,9 +1639,6 @@ static int __coda_start_decoding(struct coda_ctx *ctx)
ctx->frm_dis_flg = 0;
coda_write(dev, 0, CODA_REG_BIT_FRM_DIS_FLG(ctx->reg_idx));
- coda_write(dev, CODA_BIT_DEC_SEQ_INIT_ESCAPE,
- CODA_REG_BIT_BIT_STREAM_PARAM);
-
coda_write(dev, bitstream_buf, CODA_CMD_DEC_SEQ_BB_START);
coda_write(dev, bitstream_size / 1024, CODA_CMD_DEC_SEQ_BB_SIZE);
val = 0;
@@ -1676,18 +1673,18 @@ static int __coda_start_decoding(struct coda_ctx *ctx)
if (dev->devtype->product != CODA_960)
coda_write(dev, 0, CODA_CMD_DEC_SEQ_SRC_SIZE);
- if (coda_command_sync(ctx, CODA_COMMAND_SEQ_INIT)) {
+ ctx->bit_stream_param = CODA_BIT_DEC_SEQ_INIT_ESCAPE;
+ ret = coda_command_sync(ctx, CODA_COMMAND_SEQ_INIT);
+ ctx->bit_stream_param = 0;
+ if (ret) {
v4l2_err(&dev->v4l2_dev, "CODA_COMMAND_SEQ_INIT timeout\n");
- coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
- return -ETIMEDOUT;
+ return ret;
}
ctx->initialized = 1;
/* Update kfifo out pointer from coda bitstream read pointer */
coda_kfifo_sync_from_device(ctx);
- coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
-
if (coda_read(dev, CODA_RET_DEC_SEQ_SUCCESS) == 0) {
v4l2_err(&dev->v4l2_dev,
"CODA_COMMAND_SEQ_INIT failed, error code = %d\n",
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