media: coda: Add control for h.264 constrained intra prediction

Allow to enable constrained intra prediction in the h.264 encoder.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/platform/coda/coda-bit.c

@@ -1010,7 +1010,9 @@ static int coda_start_encoding(struct coda_ctx *ctx)
 			 CODA_264PARAM_DEBLKFILTEROFFSETALPHA_OFFSET) |
 			((ctx->params.h264_slice_beta_offset_div2 &
 			  CODA_264PARAM_DEBLKFILTEROFFSETBETA_MASK) <<
-			 CODA_264PARAM_DEBLKFILTEROFFSETBETA_OFFSET);
+			 CODA_264PARAM_DEBLKFILTEROFFSETBETA_OFFSET) |
+			(ctx->params.h264_constrained_intra_pred_flag <<
+			 CODA_264PARAM_CONSTRAINEDINTRAPREDFLAG_OFFSET);
 		coda_write(dev, value, CODA_CMD_ENC_SEQ_264_PARA);
 		break;
 	case V4L2_PIX_FMT_JPEG:

drivers/media/platform/coda/coda-common.c

@@ -1839,6 +1839,9 @@ static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
 	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
 		ctx->params.h264_disable_deblocking_filter_idc = ctrl->val;
 		break;
+	case V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION:
+		ctx->params.h264_constrained_intra_pred_flag = ctrl->val;
+		break;
 	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
 		/* TODO: switch between baseline and constrained baseline */
 		if (ctx->inst_type == CODA_INST_ENCODER)
@@ -1925,6 +1928,9 @@ static void coda_encode_ctrls(struct coda_ctx *ctx)
 		V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE,
 		V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED_AT_SLICE_BOUNDARY,
 		0x0, V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED);
+	v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
+		V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION, 0, 1, 1,
+		0);
 	v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
 		V4L2_CID_MPEG_VIDEO_H264_PROFILE,
 		V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE, 0x0,

drivers/media/platform/coda/coda.h

@@ -118,6 +118,7 @@ struct coda_params {
 	u8			h264_disable_deblocking_filter_idc;
 	s8			h264_slice_alpha_c0_offset_div2;
 	s8			h264_slice_beta_offset_div2;
+	bool			h264_constrained_intra_pred_flag;
 	u8			h264_profile_idc;
 	u8			h264_level_idc;
 	u8			mpeg4_intra_qp;