media: mediatek: vcodec: support stateless VP8 decoding

Add support for VP8 decoding using the stateless API,
as supported by MT8192.
Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/mediatek/vcodec/Makefile

@@ -7,6 +7,7 @@ obj-$(CONFIG_VIDEO_MEDIATEK_VCODEC) += mtk-vcodec-dec.o \
 
 mtk-vcodec-dec-y := vdec/vdec_h264_if.o \
 		vdec/vdec_vp8_if.o \
+		vdec/vdec_vp8_req_if.o \
 		vdec/vdec_vp9_if.o \
 		vdec/vdec_h264_req_if.o \
 		vdec/vdec_h264_req_common.o \

drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_stateless.c

@@ -76,13 +76,28 @@ static const struct mtk_stateless_control mtk_stateless_controls[] = {
 			.max = V4L2_STATELESS_H264_START_CODE_ANNEX_B,
 		},
 		.codec_type = V4L2_PIX_FMT_H264_SLICE,
+	},
+	{
+		.cfg = {
+			.id = V4L2_CID_STATELESS_VP8_FRAME,
+		},
+		.codec_type = V4L2_PIX_FMT_VP8_FRAME,
+	},
+	{
+		.cfg = {
+			.id = V4L2_CID_MPEG_VIDEO_VP8_PROFILE,
+			.min = V4L2_MPEG_VIDEO_VP8_PROFILE_0,
+			.def = V4L2_MPEG_VIDEO_VP8_PROFILE_0,
+			.max = V4L2_MPEG_VIDEO_VP8_PROFILE_3,
+		},
+		.codec_type = V4L2_PIX_FMT_VP8_FRAME,
 	}
 };
 
 #define NUM_CTRLS ARRAY_SIZE(mtk_stateless_controls)
 
-static struct mtk_video_fmt mtk_video_formats[3];
-static struct mtk_codec_framesizes mtk_vdec_framesizes[1];
+static struct mtk_video_fmt mtk_video_formats[4];
+static struct mtk_codec_framesizes mtk_vdec_framesizes[2];
 
 static struct mtk_video_fmt default_out_format;
 static struct mtk_video_fmt default_cap_format;
@@ -322,6 +337,7 @@ static void mtk_vcodec_add_formats(unsigned int fourcc,
 
 	switch (fourcc) {
 	case V4L2_PIX_FMT_H264_SLICE:
+	case V4L2_PIX_FMT_VP8_FRAME:
 		mtk_video_formats[count_formats].fourcc = fourcc;
 		mtk_video_formats[count_formats].type = MTK_FMT_DEC;
 		mtk_video_formats[count_formats].num_planes = 1;
@@ -365,6 +381,10 @@ static void mtk_vcodec_get_supported_formats(struct mtk_vcodec_ctx *ctx)
 		mtk_vcodec_add_formats(V4L2_PIX_FMT_H264_SLICE, ctx);
 		out_format_count++;
 	}
+	if (ctx->dev->dec_capability & MTK_VDEC_FORMAT_VP8_FRAME) {
+		mtk_vcodec_add_formats(V4L2_PIX_FMT_VP8_FRAME, ctx);
+		out_format_count++;
+	}
 
 	if (cap_format_count)
 		default_cap_format = mtk_video_formats[cap_format_count - 1];

drivers/media/platform/mediatek/vcodec/mtk_vcodec_drv.h

@@ -354,6 +354,7 @@ enum mtk_vdec_format_types {
 	MTK_VDEC_FORMAT_MM21 = 0x20,
 	MTK_VDEC_FORMAT_MT21C = 0x40,
 	MTK_VDEC_FORMAT_H264_SLICE = 0x100,
+	MTK_VDEC_FORMAT_VP8_FRAME = 0x200,
 };
 
 /**

drivers/media/platform/mediatek/vcodec/vdec_drv_if.c

@@ -33,6 +33,10 @@ int vdec_if_init(struct mtk_vcodec_ctx *ctx, unsigned int fourcc)
 		ctx->dec_if = &vdec_h264_if;
 		ctx->hw_id = MTK_VDEC_CORE;
 		break;
+	case V4L2_PIX_FMT_VP8_FRAME:
+		ctx->dec_if = &vdec_vp8_slice_if;
+		ctx->hw_id = MTK_VDEC_CORE;
+		break;
 	case V4L2_PIX_FMT_VP8:
 		ctx->dec_if = &vdec_vp8_if;
 		ctx->hw_id = MTK_VDEC_CORE;

drivers/media/platform/mediatek/vcodec/vdec_drv_if.h

@@ -58,6 +58,7 @@ extern const struct vdec_common_if vdec_h264_if;
 extern const struct vdec_common_if vdec_h264_slice_if;
 extern const struct vdec_common_if vdec_h264_slice_multi_if;
 extern const struct vdec_common_if vdec_vp8_if;
+extern const struct vdec_common_if vdec_vp8_slice_if;
 extern const struct vdec_common_if vdec_vp9_if;
 
 /**