[PATCH v3 2/3] media: verisilicon: add WebP decoding support

[Hugues Fruchet]

Add WebP picture decoding support to VP8 stateless decoder.

Signed-off-by: Hugues Fruchet <hugues.fruchet at foss.st.com>
---
 .../media/platform/verisilicon/hantro_g1_regs.h |  1 +
 .../platform/verisilicon/hantro_g1_vp8_dec.c    | 14 ++++++++++++++
 .../media/platform/verisilicon/hantro_v4l2.c    |  2 ++
 .../platform/verisilicon/stm32mp25_vpu_hw.c     | 17 +++++++++++++++--
 4 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/verisilicon/hantro_g1_regs.h b/drivers/media/platform/verisilicon/hantro_g1_regs.h
index c623b3b0be18..e7d4db788e57 100644
--- a/drivers/media/platform/verisilicon/hantro_g1_regs.h
+++ b/drivers/media/platform/verisilicon/hantro_g1_regs.h
@@ -232,6 +232,7 @@
 #define     G1_REG_DEC_CTRL7_DCT7_START_BIT(x)		(((x) & 0x3f) << 0)
 #define G1_REG_ADDR_STR					0x030
 #define G1_REG_ADDR_DST					0x034
+#define G1_REG_ADDR_DST_CHROMA				0x038
 #define G1_REG_ADDR_REF(i)				(0x038 + ((i) * 0x4))
 #define     G1_REG_ADDR_REF_FIELD_E			BIT(1)
 #define     G1_REG_ADDR_REF_TOPC_E			BIT(0)
diff --git a/drivers/media/platform/verisilicon/hantro_g1_vp8_dec.c b/drivers/media/platform/verisilicon/hantro_g1_vp8_dec.c
index 851eb67f19f5..c83ee6f5edc8 100644
--- a/drivers/media/platform/verisilicon/hantro_g1_vp8_dec.c
+++ b/drivers/media/platform/verisilicon/hantro_g1_vp8_dec.c
@@ -307,6 +307,12 @@ static void cfg_parts(struct hantro_ctx *ctx,
 			   G1_REG_DEC_CTRL3_STREAM_LEN(dct_part_total_len),
 			   G1_REG_DEC_CTRL3);
 
+	if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_WEBP_FRAME)
+		vdpu_write_relaxed(vpu,
+				   G1_REG_DEC_CTRL3_STREAM_LEN_EXT
+					(dct_part_total_len >> 24),
+				   G1_REG_DEC_CTRL3);
+
 	/* DCT partitions base address */
 	for (i = 0; i < hdr->num_dct_parts; i++) {
 		u32 byte_offset = dct_part_offset + dct_size_part_size + count;
@@ -427,6 +433,12 @@ static void cfg_buffers(struct hantro_ctx *ctx,
 
 	dst_dma = hantro_get_dec_buf_addr(ctx, &vb2_dst->vb2_buf);
 	vdpu_write_relaxed(vpu, dst_dma, G1_REG_ADDR_DST);
+
+	if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_WEBP_FRAME)
+		vdpu_write_relaxed(vpu, dst_dma +
+				   ctx->dst_fmt.plane_fmt[0].bytesperline *
+				   ctx->dst_fmt.height,
+				   G1_REG_ADDR_DST_CHROMA);
 }
 
 int hantro_g1_vp8_dec_run(struct hantro_ctx *ctx)
@@ -471,6 +483,8 @@ int hantro_g1_vp8_dec_run(struct hantro_ctx *ctx)
 		reg |= G1_REG_DEC_CTRL0_SKIP_MODE;
 	if (hdr->lf.level == 0)
 		reg |= G1_REG_DEC_CTRL0_FILTERING_DIS;
+	if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_WEBP_FRAME)
+		reg |= G1_REG_DEC_CTRL0_WEBP_E;
 	vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL0);
 
 	/* Frame dimensions */
diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
index 2513adfbd825..7075b2ba1ec2 100644
--- a/drivers/media/platform/verisilicon/hantro_v4l2.c
+++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
@@ -470,6 +470,7 @@ hantro_update_requires_request(struct hantro_ctx *ctx, u32 fourcc)
 		break;
 	case V4L2_PIX_FMT_MPEG2_SLICE:
 	case V4L2_PIX_FMT_VP8_FRAME:
+	case V4L2_PIX_FMT_WEBP_FRAME:
 	case V4L2_PIX_FMT_H264_SLICE:
 	case V4L2_PIX_FMT_HEVC_SLICE:
 	case V4L2_PIX_FMT_VP9_FRAME:
@@ -492,6 +493,7 @@ hantro_update_requires_hold_capture_buf(struct hantro_ctx *ctx, u32 fourcc)
 	case V4L2_PIX_FMT_JPEG:
 	case V4L2_PIX_FMT_MPEG2_SLICE:
 	case V4L2_PIX_FMT_VP8_FRAME:
+	case V4L2_PIX_FMT_WEBP_FRAME:
 	case V4L2_PIX_FMT_HEVC_SLICE:
 	case V4L2_PIX_FMT_VP9_FRAME:
 		vq->subsystem_flags &= ~(VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF);
diff --git a/drivers/media/platform/verisilicon/stm32mp25_vpu_hw.c b/drivers/media/platform/verisilicon/stm32mp25_vpu_hw.c
index 833821120b20..c291b1560e20 100644
--- a/drivers/media/platform/verisilicon/stm32mp25_vpu_hw.c
+++ b/drivers/media/platform/verisilicon/stm32mp25_vpu_hw.c
@@ -22,10 +22,10 @@ static const struct hantro_fmt stm32mp25_vdec_fmts[] = {
 		.codec_mode = HANTRO_MODE_NONE,
 		.frmsize = {
 			.min_width = FMT_MIN_WIDTH,
-			.max_width = FMT_FHD_WIDTH,
+			.max_width = FMT_4K_WIDTH,
 			.step_width = MB_DIM,
 			.min_height = FMT_MIN_HEIGHT,
-			.max_height = FMT_FHD_HEIGHT,
+			.max_height = FMT_4K_HEIGHT,
 			.step_height = MB_DIM,
 		},
 	},
@@ -42,6 +42,19 @@ static const struct hantro_fmt stm32mp25_vdec_fmts[] = {
 			.step_height = MB_DIM,
 		},
 	},
+	{
+		.fourcc = V4L2_PIX_FMT_WEBP_FRAME,
+		.codec_mode = HANTRO_MODE_VP8_DEC,
+		.max_depth = 2,
+		.frmsize = {
+			.min_width = FMT_MIN_WIDTH,
+			.max_width = FMT_4K_WIDTH,
+			.step_width = MB_DIM,
+			.min_height = FMT_MIN_HEIGHT,
+			.max_height = FMT_4K_HEIGHT,
+			.step_height = MB_DIM,
+		},
+	},
 	{
 		.fourcc = V4L2_PIX_FMT_H264_SLICE,
 		.codec_mode = HANTRO_MODE_H264_DEC,
-- 
2.25.1