[PATCH 17/30] [media] coda: add cyclic intra refresh control

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Allow userspace to enable cyclic intra refresh by setting the number of
intra macroblocks per frame to a non-zero value.

Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
---
 drivers/media/platform/coda.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/coda.c b/drivers/media/platform/coda.c
index 4b84d16..11e059d 100644
--- a/drivers/media/platform/coda.c
+++ b/drivers/media/platform/coda.c
@@ -167,6 +167,7 @@ struct coda_params {
 	u8			mpeg4_intra_qp;
 	u8			mpeg4_inter_qp;
 	u8			gop_size;
+	int			intra_refresh;
 	int			codec_mode;
 	int			codec_mode_aux;
 	enum v4l2_mpeg_video_multi_slice_mode slice_mode;
@@ -2433,7 +2434,8 @@ static int coda_start_encoding(struct coda_ctx *ctx)
 	coda_write(dev, value, CODA_CMD_ENC_SEQ_RC_PARA);
 
 	coda_write(dev, 0, CODA_CMD_ENC_SEQ_RC_BUF_SIZE);
-	coda_write(dev, 0, CODA_CMD_ENC_SEQ_INTRA_REFRESH);
+	coda_write(dev, ctx->params.intra_refresh,
+		   CODA_CMD_ENC_SEQ_INTRA_REFRESH);
 
 	coda_write(dev, bitstream_buf, CODA_CMD_ENC_SEQ_BB_START);
 	coda_write(dev, bitstream_size / 1024, CODA_CMD_ENC_SEQ_BB_SIZE);
@@ -2731,6 +2733,9 @@ static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
 		break;
 	case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
 		break;
+	case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:
+		ctx->params.intra_refresh = ctrl->val;
+		break;
 	default:
 		v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
 			"Invalid control, id=%d, val=%d\n",
@@ -2792,6 +2797,8 @@ static int coda_ctrls_setup(struct coda_ctx *ctx)
 		V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
 		(1 << V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE),
 		V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);
+	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
+		V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB, 0, 1920 * 1088 / 256, 1, 0);
 
 	if (ctx->ctrls.error) {
 		v4l2_err(&ctx->dev->v4l2_dev, "control initialization error (%d)",
-- 
2.0.0.rc2

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