linux-kernel - [PATCH] media: rzg2l-cru: csi-2: Support RZ/V2H input sizes

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Message-Id: <20250826-rzv2h-cru-sizes-v1-1-dbdfc54bba11@ideasonboard.com>
Date: Tue, 26 Aug 2025 12:31:42 +0200
From: Jacopo Mondi <jacopo.mondi@...asonboard.com>
To: Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Hans Verkuil <hverkuil@...nel.org>, 
 Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>, 
 Tommaso Merciai <tommaso.merciai.xr@...renesas.com>, 
 Biju Das <biju.das.jz@...renesas.com>, 
 Daniel Scally <dan.scally+renesas@...asonboard.com>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Jacopo Mondi <jacopo.mondi+renesas@...asonboard.com>, 
 Jacopo Mondi <jacopo.mondi@...asonboard.com>
Subject: [PATCH] media: rzg2l-cru: csi-2: Support RZ/V2H input sizes

From: Jacopo Mondi <jacopo.mondi+renesas@...asonboard.com>

The CRU version on the RZ/V2H SoC supports larger input sizes
(4096x4096) compared to the version on the RZ/G2L (2800x4095).

Store the per-SoC min/max sizes in the device match info and use them
in place of the hardcoded ones.

Signed-off-by: Jacopo Mondi <jacopo.mondi+renesas@...asonboard.com>
---
Signed-off-by: Jacopo Mondi <jacopo.mondi@...asonboard.com>
---
 .../media/platform/renesas/rzg2l-cru/rzg2l-csi2.c  | 34 ++++++++++++++++++----
 1 file changed, 28 insertions(+), 6 deletions(-)

diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c
index 1520211e74185fea3bca85f36239254f6b4651db..96d17ae0048f9d88aa73bec916365f3dbc421882 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-csi2.c
@@ -101,6 +101,11 @@
 #define RZG2L_CSI2_MAX_WIDTH		2800
 #define RZG2L_CSI2_MAX_HEIGHT		4095
 
+#define RZV2H_CSI2_MIN_WIDTH		320
+#define RZV2H_CSI2_MIN_HEIGHT		240
+#define RZV2H_CSI2_MAX_WIDTH		4096
+#define RZV2H_CSI2_MAX_HEIGHT		4096
+
 #define RZG2L_CSI2_DEFAULT_WIDTH	RZG2L_CSI2_MIN_WIDTH
 #define RZG2L_CSI2_DEFAULT_HEIGHT	RZG2L_CSI2_MIN_HEIGHT
 #define RZG2L_CSI2_DEFAULT_FMT		MEDIA_BUS_FMT_UYVY8_1X16
@@ -137,6 +142,10 @@ struct rzg2l_csi2_info {
 	int (*dphy_enable)(struct rzg2l_csi2 *csi2);
 	int (*dphy_disable)(struct rzg2l_csi2 *csi2);
 	bool has_system_clk;
+	unsigned int min_width;
+	unsigned int min_height;
+	unsigned int max_width;
+	unsigned int max_height;
 };
 
 struct rzg2l_csi2_timings {
@@ -418,6 +427,10 @@ static const struct rzg2l_csi2_info rzg2l_csi2_info = {
 	.dphy_enable = rzg2l_csi2_dphy_enable,
 	.dphy_disable = rzg2l_csi2_dphy_disable,
 	.has_system_clk = true,
+	.min_width = RZG2L_CSI2_MIN_WIDTH,
+	.min_height = RZG2L_CSI2_MIN_HEIGHT,
+	.max_width = RZG2L_CSI2_MAX_WIDTH,
+	.max_height = RZG2L_CSI2_MAX_HEIGHT,
 };
 
 static int rzg2l_csi2_dphy_setting(struct v4l2_subdev *sd, bool on)
@@ -542,6 +555,10 @@ static const struct rzg2l_csi2_info rzv2h_csi2_info = {
 	.dphy_enable = rzv2h_csi2_dphy_enable,
 	.dphy_disable = rzv2h_csi2_dphy_disable,
 	.has_system_clk = false,
+	.min_width = RZV2H_CSI2_MIN_WIDTH,
+	.min_height = RZV2H_CSI2_MIN_HEIGHT,
+	.max_width = RZV2H_CSI2_MAX_WIDTH,
+	.max_height = RZV2H_CSI2_MAX_HEIGHT,
 };
 
 static int rzg2l_csi2_mipi_link_setting(struct v4l2_subdev *sd, bool on)
@@ -631,6 +648,7 @@ static int rzg2l_csi2_set_format(struct v4l2_subdev *sd,
 				 struct v4l2_subdev_state *state,
 				 struct v4l2_subdev_format *fmt)
 {
+	struct rzg2l_csi2 *csi2 = sd_to_csi2(sd);
 	struct v4l2_mbus_framefmt *src_format;
 	struct v4l2_mbus_framefmt *sink_format;
 
@@ -653,9 +671,11 @@ static int rzg2l_csi2_set_format(struct v4l2_subdev *sd,
 	sink_format->ycbcr_enc = fmt->format.ycbcr_enc;
 	sink_format->quantization = fmt->format.quantization;
 	sink_format->width = clamp_t(u32, fmt->format.width,
-				     RZG2L_CSI2_MIN_WIDTH, RZG2L_CSI2_MAX_WIDTH);
+				     csi2->info->min_width,
+				     csi2->info->max_width);
 	sink_format->height = clamp_t(u32, fmt->format.height,
-				      RZG2L_CSI2_MIN_HEIGHT, RZG2L_CSI2_MAX_HEIGHT);
+				     csi2->info->min_height,
+				     csi2->info->max_height);
 	fmt->format = *sink_format;
 
 	/* propagate format to source pad */
@@ -697,16 +717,18 @@ static int rzg2l_csi2_enum_frame_size(struct v4l2_subdev *sd,
 				      struct v4l2_subdev_state *sd_state,
 				      struct v4l2_subdev_frame_size_enum *fse)
 {
+	struct rzg2l_csi2 *csi2 = sd_to_csi2(sd);
+
 	if (fse->index != 0)
 		return -EINVAL;
 
 	if (!rzg2l_csi2_code_to_fmt(fse->code))
 		return -EINVAL;
 
-	fse->min_width = RZG2L_CSI2_MIN_WIDTH;
-	fse->min_height = RZG2L_CSI2_MIN_HEIGHT;
-	fse->max_width = RZG2L_CSI2_MAX_WIDTH;
-	fse->max_height = RZG2L_CSI2_MAX_HEIGHT;
+	fse->min_width = csi2->info->min_width;
+	fse->min_height = csi2->info->min_height;
+	fse->max_width = csi2->info->max_width;
+	fse->max_height = csi2->info->max_height;
 
 	return 0;
 }

---
base-commit: 16428e2449ab96cce27be6ab17b750b404c76c7c
change-id: 20250826-rzv2h-cru-sizes-371ff5a88081

Best regards,
-- 
Jacopo Mondi <jacopo.mondi@...asonboard.com>