linux-kernel - [PATCH 4/7] media: hantro: move postproc enablement for old cores

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Date:   Mon, 22 Nov 2021 19:46:59 +0100
From:   Jernej Skrabec <jernej.skrabec@...il.com>
To:     linux-media@...r.kernel.org
Cc:     ezequiel@...guardiasur.com.ar, nicolas.dufresne@...labora.com,
        mchehab@...nel.org, robh+dt@...nel.org, mripard@...nel.org,
        wens@...e.org, p.zabel@...gutronix.de, andrzej.p@...labora.com,
        gregkh@...uxfoundation.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        linux-kernel@...r.kernel.org, linux-staging@...ts.linux.dev,
        Jernej Skrabec <jernej.skrabec@...il.com>
Subject: [PATCH 4/7] media: hantro: move postproc enablement for old cores

Older G2 cores, like that in Allwinner H6, seem to have issue with
latching postproc register values if this is first thing done in job.
Moving that to the end solves the issue.

Signed-off-by: Jernej Skrabec <jernej.skrabec@...il.com>
---
 drivers/staging/media/hantro/hantro_drv.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/media/hantro/hantro_drv.c b/drivers/staging/media/hantro/hantro_drv.c
index 8c3de31f51b3..530994ab3024 100644
--- a/drivers/staging/media/hantro/hantro_drv.c
+++ b/drivers/staging/media/hantro/hantro_drv.c
@@ -130,7 +130,7 @@ void hantro_start_prepare_run(struct hantro_ctx *ctx)
 	v4l2_ctrl_request_setup(src_buf->vb2_buf.req_obj.req,
 				&ctx->ctrl_handler);
 
-	if (!ctx->is_encoder) {
+	if (!ctx->is_encoder && !ctx->dev->variant->legacy_regs) {
 		if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt))
 			hantro_postproc_enable(ctx);
 		else
@@ -142,6 +142,13 @@ void hantro_end_prepare_run(struct hantro_ctx *ctx)
 {
 	struct vb2_v4l2_buffer *src_buf;
 
+	if (ctx->dev->variant->legacy_regs && !ctx->is_encoder) {
+		if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt))
+			hantro_postproc_enable(ctx);
+		else
+			hantro_postproc_disable(ctx);
+	}
+
 	src_buf = hantro_get_src_buf(ctx);
 	v4l2_ctrl_request_complete(src_buf->vb2_buf.req_obj.req,
 				   &ctx->ctrl_handler);
-- 
2.34.0