[media] media: coda: add byte size slice limit control

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/platform/coda.c

@@ -151,6 +151,7 @@ struct coda_params {
 	enum v4l2_mpeg_video_multi_slice_mode slice_mode;
 	u32			framerate;
 	u16			bitrate;
+	u32			slice_max_bits;
 	u32			slice_max_mb;
 };
 
@@ -1061,12 +1062,23 @@ static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
 		return -EINVAL;
 	}
 
-	value  = (ctx->params.slice_max_mb & CODA_SLICING_SIZE_MASK) << CODA_SLICING_SIZE_OFFSET;
-	value |= (1 & CODA_SLICING_UNIT_MASK) << CODA_SLICING_UNIT_OFFSET;
-	if (ctx->params.slice_mode == V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB)
+	switch (ctx->params.slice_mode) {
+	case V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE:
+		value = 0;
+		break;
+	case V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB:
+		value  = (ctx->params.slice_max_mb & CODA_SLICING_SIZE_MASK) << CODA_SLICING_SIZE_OFFSET;
+		value |= (1 & CODA_SLICING_UNIT_MASK) << CODA_SLICING_UNIT_OFFSET;
+		value |=  1 & CODA_SLICING_MODE_MASK;
+		break;
+	case V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_BYTES:
+		value  = (ctx->params.slice_max_bits & CODA_SLICING_SIZE_MASK) << CODA_SLICING_SIZE_OFFSET;
+		value |= (0 & CODA_SLICING_UNIT_MASK) << CODA_SLICING_UNIT_OFFSET;
 		value |=  1 & CODA_SLICING_MODE_MASK;
+		break;
+	}
 	coda_write(dev, value, CODA_CMD_ENC_SEQ_SLICE_MODE);
-	value  =  ctx->params.gop_size & CODA_GOP_SIZE_MASK;
+	value = ctx->params.gop_size & CODA_GOP_SIZE_MASK;
 	coda_write(dev, value, CODA_CMD_ENC_SEQ_GOP_SIZE);
 
 	if (ctx->params.bitrate) {
@@ -1313,6 +1325,9 @@ static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
 	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:
 		ctx->params.slice_max_mb = ctrl->val;
 		break;
+	case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:
+		ctx->params.slice_max_bits = ctrl->val * 8;
+		break;
 	case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
 		break;
 	default:
@@ -1351,10 +1366,12 @@ static int coda_ctrls_setup(struct coda_ctx *ctx)
 		V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP, 1, 31, 1, 2);
 	v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
 		V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE,
-		V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB, 0,
-		V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB);
+		V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_BYTES, 0x0,
+		V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE);
 	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
 		V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB, 1, 0x3fffffff, 1, 1);
+	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
+		V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES, 1, 0x3fffffff, 1, 500);
 	v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
 		V4L2_CID_MPEG_VIDEO_HEADER_MODE,
 		V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,