linux-kernel - [PATCH v2 2/7] media: rkvdec: Add variants support

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Message-ID: <20250810212454.3237486-3-jonas@kwiboo.se>
Date: Sun, 10 Aug 2025 21:24:32 +0000
From: Jonas Karlman <jonas@...boo.se>
To: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
	Detlev Casanova <detlev.casanova@...labora.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Heiko Stuebner <heiko@...ech.de>
Cc: Alex Bee <knaerzche@...il.com>,
	Nicolas Dufresne <nicolas.dufresne@...labora.com>,
	Sebastian Fricke <sebastian.fricke@...labora.com>,
	linux-media@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Jonas Karlman <jonas@...boo.se>
Subject: [PATCH v2 2/7] media: rkvdec: Add variants support

From: Alex Bee <knaerzche@...il.com>

Different versions of the Rockchip VDEC IP exists and one way they can
differ is what decoding formats are supported.

Add a variant implementation in order to support flagging different
capabilities.

Signed-off-by: Alex Bee <knaerzche@...il.com>
Signed-off-by: Jonas Karlman <jonas@...boo.se>
---
Changes in v2:
- No change
---
 .../media/platform/rockchip/rkvdec/rkvdec.c   | 21 ++++++++++++++++++-
 .../media/platform/rockchip/rkvdec/rkvdec.h   | 10 +++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/rockchip/rkvdec/rkvdec.c b/drivers/media/platform/rockchip/rkvdec/rkvdec.c
index cfb326600a2d..e7b9dfc2d1ab 100644
--- a/drivers/media/platform/rockchip/rkvdec/rkvdec.c
+++ b/drivers/media/platform/rockchip/rkvdec/rkvdec.c
@@ -14,6 +14,7 @@
 #include <linux/iommu.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/pm.h>
 #include <linux/pm_runtime.h>
@@ -327,6 +328,7 @@ static const struct rkvdec_coded_fmt_desc rkvdec_coded_fmts[] = {
 		.ops = &rkvdec_hevc_fmt_ops,
 		.num_decoded_fmts = ARRAY_SIZE(rkvdec_hevc_decoded_fmts),
 		.decoded_fmts = rkvdec_hevc_decoded_fmts,
+		.capability = RKVDEC_CAPABILITY_HEVC,
 	},
 	{
 		.fourcc = V4L2_PIX_FMT_H264_SLICE,
@@ -343,6 +345,7 @@ static const struct rkvdec_coded_fmt_desc rkvdec_coded_fmts[] = {
 		.num_decoded_fmts = ARRAY_SIZE(rkvdec_h264_decoded_fmts),
 		.decoded_fmts = rkvdec_h264_decoded_fmts,
 		.subsystem_flags = VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF,
+		.capability = RKVDEC_CAPABILITY_H264,
 	},
 	{
 		.fourcc = V4L2_PIX_FMT_VP9_FRAME,
@@ -358,6 +361,7 @@ static const struct rkvdec_coded_fmt_desc rkvdec_coded_fmts[] = {
 		.ops = &rkvdec_vp9_fmt_ops,
 		.num_decoded_fmts = ARRAY_SIZE(rkvdec_vp9_decoded_fmts),
 		.decoded_fmts = rkvdec_vp9_decoded_fmts,
+		.capability = RKVDEC_CAPABILITY_VP9,
 	}
 };
 
@@ -1187,8 +1191,17 @@ static void rkvdec_watchdog_func(struct work_struct *work)
 	}
 }
 
+static const struct rkvdec_variant rk3399_rkvdec_variant = {
+	.capabilities = RKVDEC_CAPABILITY_HEVC |
+			RKVDEC_CAPABILITY_H264 |
+			RKVDEC_CAPABILITY_VP9,
+};
+
 static const struct of_device_id of_rkvdec_match[] = {
-	{ .compatible = "rockchip,rk3399-vdec" },
+	{
+		.compatible = "rockchip,rk3399-vdec",
+		.data = &rk3399_rkvdec_variant,
+	},
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, of_rkvdec_match);
@@ -1199,16 +1212,22 @@ static const char * const rkvdec_clk_names[] = {
 
 static int rkvdec_probe(struct platform_device *pdev)
 {
+	const struct rkvdec_variant *variant;
 	struct rkvdec_dev *rkvdec;
 	unsigned int i;
 	int ret, irq;
 
+	variant = of_device_get_match_data(&pdev->dev);
+	if (!variant)
+		return -EINVAL;
+
 	rkvdec = devm_kzalloc(&pdev->dev, sizeof(*rkvdec), GFP_KERNEL);
 	if (!rkvdec)
 		return -ENOMEM;
 
 	platform_set_drvdata(pdev, rkvdec);
 	rkvdec->dev = &pdev->dev;
+	rkvdec->capabilities = variant->capabilities;
 	mutex_init(&rkvdec->vdev_lock);
 	INIT_DELAYED_WORK(&rkvdec->watchdog_work, rkvdec_watchdog_func);
 
diff --git a/drivers/media/platform/rockchip/rkvdec/rkvdec.h b/drivers/media/platform/rockchip/rkvdec/rkvdec.h
index c062c5c5bbb2..8e1f8548eae4 100644
--- a/drivers/media/platform/rockchip/rkvdec/rkvdec.h
+++ b/drivers/media/platform/rockchip/rkvdec/rkvdec.h
@@ -22,6 +22,10 @@
 #include <media/videobuf2-core.h>
 #include <media/videobuf2-dma-contig.h>
 
+#define RKVDEC_CAPABILITY_HEVC		BIT(0)
+#define RKVDEC_CAPABILITY_H264		BIT(1)
+#define RKVDEC_CAPABILITY_VP9		BIT(2)
+
 struct rkvdec_ctx;
 
 struct rkvdec_ctrl_desc {
@@ -63,6 +67,10 @@ vb2_to_rkvdec_decoded_buf(struct vb2_buffer *buf)
 			    base.vb.vb2_buf);
 }
 
+struct rkvdec_variant {
+	unsigned int capabilities;
+};
+
 struct rkvdec_coded_fmt_ops {
 	int (*adjust_fmt)(struct rkvdec_ctx *ctx,
 			  struct v4l2_format *f);
@@ -98,6 +106,7 @@ struct rkvdec_coded_fmt_desc {
 	unsigned int num_decoded_fmts;
 	const struct rkvdec_decoded_fmt_desc *decoded_fmts;
 	u32 subsystem_flags;
+	unsigned int capability;
 };
 
 struct rkvdec_dev {
@@ -111,6 +120,7 @@ struct rkvdec_dev {
 	struct mutex vdev_lock; /* serializes ioctls */
 	struct delayed_work watchdog_work;
 	struct iommu_domain *empty_domain;
+	unsigned int capabilities;
 };
 
 struct rkvdec_ctx {
-- 
2.50.1