linux-kernel - [PATCH 1/6] media: chips-media: wave5: support decoding higher bit-depth profiles

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Message-ID: <20240318144225.30835-2-brnkv.i1@gmail.com>
Date: Mon, 18 Mar 2024 17:42:16 +0300
From: Ivan Bornyakov <brnkv.i1@...il.com>
To: Nas Chung <nas.chung@...psnmedia.com>,
	Jackson Lee <jackson.lee@...psnmedia.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: Ivan Bornyakov <brnkv.i1@...il.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: [PATCH 1/6] media: chips-media: wave5: support decoding higher bit-depth profiles

Add support for decoding higher than 8 bit-depth profiles by scaling FBC
buffer stride and size by the factor of (bitdepth / 8).

Signed-off-by: Ivan Bornyakov <brnkv.i1@...il.com>
---
 .../platform/chips-media/wave5/wave5-vpu-dec.c    | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c b/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c
index ef227af72348..aa0401f35d32 100644
--- a/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c
+++ b/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c
@@ -1055,6 +1055,7 @@ static int wave5_prepare_fb(struct vpu_instance *inst)
 	int ret, i;
 	struct v4l2_m2m_buffer *buf, *n;
 	struct v4l2_m2m_ctx *m2m_ctx = inst->v4l2_fh.m2m_ctx;
+	u32 bitdepth = inst->codec_info->dec_info.initial_info.luma_bitdepth;
 
 	linear_num = v4l2_m2m_num_dst_bufs_ready(m2m_ctx);
 	non_linear_num = inst->fbc_buf_count;
@@ -1063,7 +1064,7 @@ static int wave5_prepare_fb(struct vpu_instance *inst)
 		struct frame_buffer *frame = &inst->frame_buf[i];
 		struct vpu_buf *vframe = &inst->frame_vbuf[i];
 
-		fb_stride = inst->dst_fmt.width;
+		fb_stride = ALIGN(inst->dst_fmt.width * bitdepth / 8, 32);
 		fb_height = ALIGN(inst->dst_fmt.height, 32);
 		luma_size = fb_stride * fb_height;
 
@@ -1408,22 +1409,10 @@ static int wave5_vpu_dec_start_streaming(struct vb2_queue *q, unsigned int count
 		if (ret)
 			goto free_bitstream_vbuf;
 	} else if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
-		struct dec_initial_info *initial_info =
-			&inst->codec_info->dec_info.initial_info;
-
 		if (inst->state == VPU_INST_STATE_STOP)
 			ret = switch_state(inst, VPU_INST_STATE_INIT_SEQ);
 		if (ret)
 			goto return_buffers;
-
-		if (inst->state == VPU_INST_STATE_INIT_SEQ) {
-			if (initial_info->luma_bitdepth != 8) {
-				dev_info(inst->dev->dev, "%s: no support for %d bit depth",
-					 __func__, initial_info->luma_bitdepth);
-				ret = -EINVAL;
-				goto return_buffers;
-			}
-		}
 	}
 
 	return ret;
-- 
2.44.0