media: coda: fix decoder sequence init escape flag

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.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/drivers/media/platform/coda/coda-bit.c b/drivers/media/platform/coda/coda-bit.c
index 95e4b74..291c409 100644 (file)
--- 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",