media: hantro: Avoid redundant hantro_get_{dst,src}_buf() calls

Getting the next src/dst buffer is relatively expensive
so avoid doing it multiple times.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Tested-by: Alex Bee <knaerzche@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/staging/media/hantro/hantro_g1_h264_dec.c

@@ -19,13 +19,12 @@
 #include "hantro_hw.h"
 #include "hantro_v4l2.h"
 
-static void set_params(struct hantro_ctx *ctx)
+static void set_params(struct hantro_ctx *ctx, struct vb2_v4l2_buffer *src_buf)
 {
 	const struct hantro_h264_dec_ctrls *ctrls = &ctx->h264_dec.ctrls;
 	const struct v4l2_ctrl_h264_decode_params *dec_param = ctrls->decode;
 	const struct v4l2_ctrl_h264_sps *sps = ctrls->sps;
 	const struct v4l2_ctrl_h264_pps *pps = ctrls->pps;
-	struct vb2_v4l2_buffer *src_buf = hantro_get_src_buf(ctx);
 	struct hantro_dev *vpu = ctx->dev;
 	u32 reg;
 
@@ -226,22 +225,20 @@ static void set_ref(struct hantro_ctx *ctx)
 	}
 }
 
-static void set_buffers(struct hantro_ctx *ctx)
+static void set_buffers(struct hantro_ctx *ctx, struct vb2_v4l2_buffer *src_buf)
 {
 	const struct hantro_h264_dec_ctrls *ctrls = &ctx->h264_dec.ctrls;
-	struct vb2_v4l2_buffer *src_buf, *dst_buf;
+	struct vb2_v4l2_buffer *dst_buf;
 	struct hantro_dev *vpu = ctx->dev;
 	dma_addr_t src_dma, dst_dma;
 	size_t offset = 0;
 
-	src_buf = hantro_get_src_buf(ctx);
-	dst_buf = hantro_get_dst_buf(ctx);
-
 	/* Source (stream) buffer. */
 	src_dma = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
 	vdpu_write_relaxed(vpu, src_dma, G1_REG_ADDR_STR);
 
 	/* Destination (decoded frame) buffer. */
+	dst_buf = hantro_get_dst_buf(ctx);
 	dst_dma = hantro_get_dec_buf_addr(ctx, &dst_buf->vb2_buf);
 	/* Adjust dma addr to start at second line for bottom field */
 	if (ctrls->decode->flags & V4L2_H264_DECODE_PARAM_FLAG_BOTTOM_FIELD)
@@ -276,6 +273,7 @@ static void set_buffers(struct hantro_ctx *ctx)
 int hantro_g1_h264_dec_run(struct hantro_ctx *ctx)
 {
 	struct hantro_dev *vpu = ctx->dev;
+	struct vb2_v4l2_buffer *src_buf;
 	int ret;
 
 	/* Prepare the H264 decoder context. */
@@ -284,9 +282,10 @@ int hantro_g1_h264_dec_run(struct hantro_ctx *ctx)
 		return ret;
 
 	/* Configure hardware registers. */
-	set_params(ctx);
+	src_buf = hantro_get_src_buf(ctx);
+	set_params(ctx, src_buf);
 	set_ref(ctx);
-	set_buffers(ctx);
+	set_buffers(ctx, src_buf);
 
 	hantro_end_prepare_run(ctx);
 

drivers/staging/media/hantro/hantro_g1_vp8_dec.c

@@ -367,13 +367,12 @@ static void cfg_tap(struct hantro_ctx *ctx,
 }
 
 static void cfg_ref(struct hantro_ctx *ctx,
-		    const struct v4l2_ctrl_vp8_frame *hdr)
+		    const struct v4l2_ctrl_vp8_frame *hdr,
+		    struct vb2_v4l2_buffer *vb2_dst)
 {
 	struct hantro_dev *vpu = ctx->dev;
-	struct vb2_v4l2_buffer *vb2_dst;
 	dma_addr_t ref;
 
-	vb2_dst = hantro_get_dst_buf(ctx);
 
 	ref = hantro_get_ref(ctx, hdr->last_frame_ts);
 	if (!ref) {
@@ -405,16 +404,14 @@ static void cfg_ref(struct hantro_ctx *ctx,
 }
 
 static void cfg_buffers(struct hantro_ctx *ctx,
-			const struct v4l2_ctrl_vp8_frame *hdr)
+			const struct v4l2_ctrl_vp8_frame *hdr,
+			struct vb2_v4l2_buffer *vb2_dst)
 {
 	const struct v4l2_vp8_segment *seg = &hdr->segment;
 	struct hantro_dev *vpu = ctx->dev;
-	struct vb2_v4l2_buffer *vb2_dst;
 	dma_addr_t dst_dma;
 	u32 reg;
 
-	vb2_dst = hantro_get_dst_buf(ctx);
-
 	/* Set probability table buffer address */
 	vdpu_write_relaxed(vpu, ctx->vp8_dec.prob_tbl.dma,
 			   G1_REG_ADDR_QTABLE);
@@ -436,6 +433,7 @@ int hantro_g1_vp8_dec_run(struct hantro_ctx *ctx)
 {
 	const struct v4l2_ctrl_vp8_frame *hdr;
 	struct hantro_dev *vpu = ctx->dev;
+	struct vb2_v4l2_buffer *vb2_dst;
 	size_t height = ctx->dst_fmt.height;
 	size_t width = ctx->dst_fmt.width;
 	u32 mb_width, mb_height;
@@ -499,8 +497,10 @@ int hantro_g1_vp8_dec_run(struct hantro_ctx *ctx)
 	cfg_qp(ctx, hdr);
 	cfg_parts(ctx, hdr);
 	cfg_tap(ctx, hdr);
-	cfg_ref(ctx, hdr);
-	cfg_buffers(ctx, hdr);
+
+	vb2_dst = hantro_get_dst_buf(ctx);
+	cfg_ref(ctx, hdr, vb2_dst);
+	cfg_buffers(ctx, hdr, vb2_dst);
 
 	hantro_end_prepare_run(ctx);
 

drivers/staging/media/hantro/rockchip_vpu2_hw_vp8_dec.c

@@ -444,14 +444,12 @@ static void cfg_tap(struct hantro_ctx *ctx,
 }
 
 static void cfg_ref(struct hantro_ctx *ctx,
-		    const struct v4l2_ctrl_vp8_frame *hdr)
+		    const struct v4l2_ctrl_vp8_frame *hdr,
+		    struct vb2_v4l2_buffer *vb2_dst)
 {
 	struct hantro_dev *vpu = ctx->dev;
-	struct vb2_v4l2_buffer *vb2_dst;
 	dma_addr_t ref;
 
-	vb2_dst = hantro_get_dst_buf(ctx);
-
 	ref = hantro_get_ref(ctx, hdr->last_frame_ts);
 	if (!ref) {
 		vpu_debug(0, "failed to find last frame ts=%llu\n",
@@ -482,16 +480,14 @@ static void cfg_ref(struct hantro_ctx *ctx,
 }
 
 static void cfg_buffers(struct hantro_ctx *ctx,
-			const struct v4l2_ctrl_vp8_frame *hdr)
+			const struct v4l2_ctrl_vp8_frame *hdr,
+			struct vb2_v4l2_buffer *vb2_dst)
 {
 	const struct v4l2_vp8_segment *seg = &hdr->segment;
 	struct hantro_dev *vpu = ctx->dev;
-	struct vb2_v4l2_buffer *vb2_dst;
 	dma_addr_t dst_dma;
 	u32 reg;
 
-	vb2_dst = hantro_get_dst_buf(ctx);
-
 	/* Set probability table buffer address */
 	vdpu_write_relaxed(vpu, ctx->vp8_dec.prob_tbl.dma,
 			   VDPU_REG_ADDR_QTABLE);
@@ -514,6 +510,7 @@ int rockchip_vpu2_vp8_dec_run(struct hantro_ctx *ctx)
 {
 	const struct v4l2_ctrl_vp8_frame *hdr;
 	struct hantro_dev *vpu = ctx->dev;
+	struct vb2_v4l2_buffer *vb2_dst;
 	size_t height = ctx->dst_fmt.height;
 	size_t width = ctx->dst_fmt.width;
 	u32 mb_width, mb_height;
@@ -590,8 +587,10 @@ int rockchip_vpu2_vp8_dec_run(struct hantro_ctx *ctx)
 	cfg_qp(ctx, hdr);
 	cfg_parts(ctx, hdr);
 	cfg_tap(ctx, hdr);
-	cfg_ref(ctx, hdr);
-	cfg_buffers(ctx, hdr);
+
+	vb2_dst = hantro_get_dst_buf(ctx);
+	cfg_ref(ctx, hdr, vb2_dst);
+	cfg_buffers(ctx, hdr, vb2_dst);
 
 	hantro_end_prepare_run(ctx);