linux-kernel - [PATCH] media: rzg2l-cru: Drop function pointer to configure CSI

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <20250801053426.4273-1-biju.das.jz@bp.renesas.com>
Date: Fri,  1 Aug 2025 06:34:22 +0100
From: Biju <biju.das.au@...il.com>
To: Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: Biju Das <biju.das.jz@...renesas.com>,
	Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
	Hans Verkuil <hverkuil@...nel.org>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
	Tommaso Merciai <tommaso.merciai.xr@...renesas.com>,
	Uwe Kleine-König <u.kleine-koenig@...libre.com>,
	Daniel Scally <dan.scally+renesas@...asonboard.com>,
	linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Biju Das <biju.das.au@...il.com>,
	linux-renesas-soc@...r.kernel.org
Subject: [PATCH] media: rzg2l-cru: Drop function pointer to configure CSI

From: Biju Das <biju.das.jz@...renesas.com>

Drop function pointer to configure CSI to avoid code duplication
by checking the presence of vc select register in rzg2l_cru_info.
After this change, limit the scope of the rzg2l_cru_csi2_setup()
to static.

Signed-off-by: Biju Das <biju.das.jz@...renesas.com>
---
 .../platform/renesas/rzg2l-cru/rzg2l-core.c   |  2 --
 .../platform/renesas/rzg2l-cru/rzg2l-cru.h    |  9 ------
 .../platform/renesas/rzg2l-cru/rzg2l-video.c  | 30 ++++++-------------
 3 files changed, 9 insertions(+), 32 deletions(-)

diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-core.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-core.c
index 806acc8f9728..3c5fbd857371 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-core.c
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-core.c
@@ -367,7 +367,6 @@ static const struct rzg2l_cru_info rzg3e_cru_info = {
 	.enable_interrupts = rzg3e_cru_enable_interrupts,
 	.disable_interrupts = rzg3e_cru_disable_interrupts,
 	.fifo_empty = rzg3e_fifo_empty,
-	.csi_setup = rzg3e_cru_csi2_setup,
 };
 
 static const u16 rzg2l_cru_regs[] = {
@@ -412,7 +411,6 @@ static const struct rzg2l_cru_info rzg2l_cru_info = {
 	.enable_interrupts = rzg2l_cru_enable_interrupts,
 	.disable_interrupts = rzg2l_cru_disable_interrupts,
 	.fifo_empty = rzg2l_fifo_empty,
-	.csi_setup = rzg2l_cru_csi2_setup,
 };
 
 static const struct of_device_id rzg2l_cru_of_id_table[] = {
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
index be95b41c37df..3a200db15730 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
@@ -92,9 +92,6 @@ struct rzg2l_cru_info {
 	void (*enable_interrupts)(struct rzg2l_cru_dev *cru);
 	void (*disable_interrupts)(struct rzg2l_cru_dev *cru);
 	bool (*fifo_empty)(struct rzg2l_cru_dev *cru);
-	void (*csi_setup)(struct rzg2l_cru_dev *cru,
-			  const struct rzg2l_cru_ip_format *ip_fmt,
-			  u8 csi_vc);
 };
 
 /**
@@ -204,11 +201,5 @@ void rzg3e_cru_disable_interrupts(struct rzg2l_cru_dev *cru);
 
 bool rzg2l_fifo_empty(struct rzg2l_cru_dev *cru);
 bool rzg3e_fifo_empty(struct rzg2l_cru_dev *cru);
-void rzg2l_cru_csi2_setup(struct rzg2l_cru_dev *cru,
-			  const struct rzg2l_cru_ip_format *ip_fmt,
-			  u8 csi_vc);
-void rzg3e_cru_csi2_setup(struct rzg2l_cru_dev *cru,
-			  const struct rzg2l_cru_ip_format *ip_fmt,
-			  u8 csi_vc);
 
 #endif
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
index a8817a7066b2..d75cd5fa9f7c 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
@@ -257,30 +257,18 @@ static void rzg2l_cru_initialize_axi(struct rzg2l_cru_dev *cru)
 	rzg2l_cru_write(cru, AMnAXIATTR, amnaxiattr);
 }
 
-void rzg3e_cru_csi2_setup(struct rzg2l_cru_dev *cru,
-			  const struct rzg2l_cru_ip_format *ip_fmt,
-			  u8 csi_vc)
+static void rzg2l_cru_csi2_setup(struct rzg2l_cru_dev *cru,
+				 const struct rzg2l_cru_ip_format *ip_fmt,
+				 u8 csi_vc)
 {
 	const struct rzg2l_cru_info *info = cru->info;
 	u32 icnmc = ICnMC_INF(ip_fmt->datatype);
 
-	icnmc |= rzg2l_cru_read(cru, info->image_conv) & ~ICnMC_INF_MASK;
-
-	/* Set virtual channel CSI2 */
-	icnmc |= ICnMC_VCSEL(csi_vc);
-
-	rzg2l_cru_write(cru, ICnSVCNUM, csi_vc);
-	rzg2l_cru_write(cru, ICnSVC, ICnSVC_SVC0(0) | ICnSVC_SVC1(1) |
-			ICnSVC_SVC2(2) | ICnSVC_SVC3(3));
-	rzg2l_cru_write(cru, info->image_conv, icnmc);
-}
-
-void rzg2l_cru_csi2_setup(struct rzg2l_cru_dev *cru,
-			  const struct rzg2l_cru_ip_format *ip_fmt,
-			  u8 csi_vc)
-{
-	const struct rzg2l_cru_info *info = cru->info;
-	u32 icnmc = ICnMC_INF(ip_fmt->datatype);
+	if (cru->info->regs[ICnSVC]) {
+		rzg2l_cru_write(cru, ICnSVCNUM, csi_vc);
+		rzg2l_cru_write(cru, ICnSVC, ICnSVC_SVC0(0) | ICnSVC_SVC1(1) |
+				ICnSVC_SVC2(2) | ICnSVC_SVC3(3));
+	}
 
 	icnmc |= rzg2l_cru_read(cru, info->image_conv) & ~ICnMC_INF_MASK;
 
@@ -299,7 +287,7 @@ static int rzg2l_cru_initialize_image_conv(struct rzg2l_cru_dev *cru,
 	const struct rzg2l_cru_ip_format *cru_ip_fmt;
 
 	cru_ip_fmt = rzg2l_cru_ip_code_to_fmt(ip_sd_fmt->code);
-	info->csi_setup(cru, cru_ip_fmt, csi_vc);
+	rzg2l_cru_csi2_setup(cru, cru_ip_fmt, csi_vc);
 
 	/* Output format */
 	cru_video_fmt = rzg2l_cru_ip_format_to_fmt(cru->format.pixelformat);
-- 
2.43.0