Lakka-rk322x/projects/Allwinner/patches/linux/0030-WIp-10-bit-HEVC-support.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jernej Skrabec <jernej.skrabec@siol.net>
Date: Sun, 15 Mar 2020 21:35:39 +0100
Subject: [PATCH] WIp: 10-bit HEVC support

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
---
 drivers/staging/media/sunxi/cedrus/cedrus.c   |  4 +--
 .../staging/media/sunxi/cedrus/cedrus_h265.c  | 12 ++++++++
 .../staging/media/sunxi/cedrus/cedrus_regs.h  |  4 +++
 .../staging/media/sunxi/cedrus/cedrus_video.c | 30 +++++++++++++++----
 .../staging/media/sunxi/cedrus/cedrus_video.h |  2 +-
 5 files changed, 44 insertions(+), 8 deletions(-)

diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.c b/drivers/staging/media/sunxi/cedrus/cedrus.c
index e1379cceea10..a4358d84d94d 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus.c
@@ -320,7 +320,7 @@ static int cedrus_open(struct file *file)
 		goto err_ctrls;
 	}
 	ctx->dst_fmt.pixelformat = V4L2_PIX_FMT_SUNXI_TILED_NV12;
-	cedrus_prepare_format(&ctx->dst_fmt);
+	cedrus_prepare_format(&ctx->dst_fmt, 0);
 	ctx->src_fmt.pixelformat = V4L2_PIX_FMT_MPEG2_SLICE;
 	/*
 	 * TILED_NV12 has more strict requirements, so copy the width and
@@ -328,7 +328,7 @@ static int cedrus_open(struct file *file)
 	 */
 	ctx->src_fmt.width = ctx->dst_fmt.width;
 	ctx->src_fmt.height = ctx->dst_fmt.height;
-	cedrus_prepare_format(&ctx->src_fmt);
+	cedrus_prepare_format(&ctx->src_fmt, 0);
 
 	v4l2_fh_add(&ctx->fh);
 
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
index 9e21a40867d7..ab6fc857a477 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
@@ -532,6 +532,18 @@ static void cedrus_h265_setup(struct cedrus_ctx *ctx,
 
 	cedrus_write(dev, VE_DEC_H265_DEC_PCM_CTRL, reg);
 
+	if (sps->bit_depth_luma_minus8 == 2) {
+		unsigned int size;
+
+		size = ALIGN(ctx->src_fmt.width, 16) * ALIGN(ctx->src_fmt.height, 16);
+
+		reg = (size * 3) / 2;
+		cedrus_write(dev, VE_DEC_H265_OFFSET_ADDR_FIRST_OUT, reg);
+
+		reg = DIV_ROUND_UP(ctx->src_fmt.width, 4);
+		cedrus_write(dev, VE_DEC_H265_10BIT_CONFIGURE, ALIGN(reg, 32));
+	}
+
 	/* PPS. */
 
 	reg = VE_DEC_H265_DEC_PPS_CTRL0_PPS_CR_QP_OFFSET(pps->pps_cr_qp_offset) |
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_regs.h b/drivers/staging/media/sunxi/cedrus/cedrus_regs.h
index a763647133b9..9fa062d5d79e 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_regs.h
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_regs.h
@@ -499,6 +499,10 @@
 
 #define VE_DEC_H265_LOW_ADDR			(VE_ENGINE_DEC_H265 + 0x80)
 
+#define VE_DEC_H265_OFFSET_ADDR_FIRST_OUT	(VE_ENGINE_DEC_H265 + 0x84)
+#define VE_DEC_H265_OFFSET_ADDR_SECOND_OUT	(VE_ENGINE_DEC_H265 + 0x88)
+#define VE_DEC_H265_10BIT_CONFIGURE		(VE_ENGINE_DEC_H265 + 0x8c)
+
 #define VE_DEC_H265_LOW_ADDR_PRIMARY_CHROMA(a) \
 	SHIFT_AND_MASK_BITS(a, 31, 24)
 #define VE_DEC_H265_LOW_ADDR_SECONDARY_CHROMA(a) \
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_video.c b/drivers/staging/media/sunxi/cedrus/cedrus_video.c
index a41365646e58..0ab747712b59 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_video.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_video.c
@@ -93,7 +93,7 @@ static struct cedrus_format *cedrus_find_format(u32 pixelformat, u32 directions,
 	return &cedrus_formats[i];
 }
 
-void cedrus_prepare_format(struct v4l2_pix_format *pix_fmt)
+void cedrus_prepare_format(struct v4l2_pix_format *pix_fmt, int extended)
 {
 	unsigned int width = pix_fmt->width;
 	unsigned int height = pix_fmt->height;
@@ -147,6 +147,17 @@ void cedrus_prepare_format(struct v4l2_pix_format *pix_fmt)
 		break;
 	}
 
+	if (extended) {
+		unsigned int extra_size;
+
+		extra_size = DIV_ROUND_UP(pix_fmt->width, 4);
+		extra_size = ALIGN(extra_size, 32);
+		extra_size *= ALIGN(pix_fmt->height, 16) * 3;
+		extra_size /= 2;
+
+		sizeimage += extra_size;
+	}
+
 	pix_fmt->width = width;
 	pix_fmt->height = height;
 
@@ -239,17 +250,27 @@ static int cedrus_try_fmt_vid_cap(struct file *file, void *priv,
 	struct cedrus_ctx *ctx = cedrus_file2ctx(file);
 	struct cedrus_dev *dev = ctx->dev;
 	struct v4l2_pix_format *pix_fmt = &f->fmt.pix;
+	const struct v4l2_ctrl_hevc_sps *sps;
 	struct cedrus_format *fmt =
 		cedrus_find_format(pix_fmt->pixelformat, CEDRUS_DECODE_DST,
 				   dev->capabilities);
+	int extended;
 
 	if (!fmt)
 		return -EINVAL;
 
+	sps = cedrus_find_control_data(ctx, V4L2_CID_MPEG_VIDEO_HEVC_SPS);
+
+	/* The 10-bitHEVC decoder needs extra size on the output buffer. */
+	extended = ctx->src_fmt.pixelformat == V4L2_PIX_FMT_HEVC_SLICE &&
+	sps->bit_depth_luma_minus8 == 2;
+
 	pix_fmt->pixelformat = fmt->pixelformat;
 	pix_fmt->width = ctx->src_fmt.width;
 	pix_fmt->height = ctx->src_fmt.height;
-	cedrus_prepare_format(pix_fmt);
+
+	pix_fmt->pixelformat = fmt->pixelformat;
+	cedrus_prepare_format(pix_fmt, extended);
 
 	return 0;
 }
@@ -267,8 +288,7 @@ static int cedrus_try_fmt_vid_out(struct file *file, void *priv,
 	if (!fmt)
 		return -EINVAL;
 
-	pix_fmt->pixelformat = fmt->pixelformat;
-	cedrus_prepare_format(pix_fmt);
+	cedrus_prepare_format(pix_fmt, 0);
 
 	return 0;
 }
@@ -349,7 +369,7 @@ static int cedrus_s_fmt_vid_out(struct file *file, void *priv,
 	ctx->dst_fmt.quantization = f->fmt.pix.quantization;
 	ctx->dst_fmt.width = ctx->src_fmt.width;
 	ctx->dst_fmt.height = ctx->src_fmt.height;
-	cedrus_prepare_format(&ctx->dst_fmt);
+	cedrus_prepare_format(&ctx->dst_fmt, 0);
 
 	return 0;
 }
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_video.h b/drivers/staging/media/sunxi/cedrus/cedrus_video.h
index 05050c0a0921..d42e4ebf6cad 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_video.h
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_video.h
@@ -26,6 +26,6 @@ extern const struct v4l2_ioctl_ops cedrus_ioctl_ops;
 
 int cedrus_queue_init(void *priv, struct vb2_queue *src_vq,
 		      struct vb2_queue *dst_vq);
-void cedrus_prepare_format(struct v4l2_pix_format *pix_fmt);
+void cedrus_prepare_format(struct v4l2_pix_format *pix_fmt, int extended);
 
 #endif