linux-kernel - [PATCH 06/23] media: i2c: imx258: Make V4L2_CID

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-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240327222035.47208-7-git@luigi311.com>
Date: Wed, 27 Mar 2024 16:20:18 -0600
From: git@...gi311.com
To: linux-media@...r.kernel.org
Cc: dave.stevenson@...pberrypi.com,
	jacopo.mondi@...asonboard.com,
	mchehab@...nel.org,
	robh@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org,
	shawnguo@...nel.org,
	s.hauer@...gutronix.de,
	kernel@...gutronix.de,
	festevam@...il.com,
	sakari.ailus@...ux.intel.com,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	x@...x.eu
Subject: [PATCH 06/23] media: i2c: imx258: Make V4L2_CID_VBLANK configurable.

From: Dave Stevenson <dave.stevenson@...pberrypi.com>

The values and ranges of V4L2_CID_VBLANK are all computed,
so there is no reason for it to be a read only control.
Remove the register values from the mode lists, add the
handler, and remove the read only flag.

Signed-off-by: Dave Stevenson <dave.stevenson@...pberrypi.com>
---
 drivers/media/i2c/imx258.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c
index 495eaada2945..321b504c6a48 100644
--- a/drivers/media/i2c/imx258.c
+++ b/drivers/media/i2c/imx258.c
@@ -30,6 +30,8 @@
 #define IMX258_VTS_30FPS_VGA		0x034c
 #define IMX258_VTS_MAX			0xffff
 
+#define IMX258_REG_VTS			0x0340
+
 /* HBLANK control - read only */
 #define IMX258_PPL_DEFAULT		5352
 
@@ -202,8 +204,6 @@ static const struct imx258_reg mode_4208x3120_regs[] = {
 	{ 0x0114, 0x03 },
 	{ 0x0342, 0x14 },
 	{ 0x0343, 0xE8 },
-	{ 0x0340, 0x0C },
-	{ 0x0341, 0x50 },
 	{ 0x0344, 0x00 },
 	{ 0x0345, 0x00 },
 	{ 0x0346, 0x00 },
@@ -319,8 +319,6 @@ static const struct imx258_reg mode_2104_1560_regs[] = {
 	{ 0x0114, 0x03 },
 	{ 0x0342, 0x14 },
 	{ 0x0343, 0xE8 },
-	{ 0x0340, 0x06 },
-	{ 0x0341, 0x38 },
 	{ 0x0344, 0x00 },
 	{ 0x0345, 0x00 },
 	{ 0x0346, 0x00 },
@@ -436,8 +434,6 @@ static const struct imx258_reg mode_1048_780_regs[] = {
 	{ 0x0114, 0x03 },
 	{ 0x0342, 0x14 },
 	{ 0x0343, 0xE8 },
-	{ 0x0340, 0x03 },
-	{ 0x0341, 0x4C },
 	{ 0x0344, 0x00 },
 	{ 0x0345, 0x00 },
 	{ 0x0346, 0x00 },
@@ -800,6 +796,11 @@ static int imx258_set_ctrl(struct v4l2_ctrl *ctrl)
 					       BIT(IMX258_HDR_RATIO_MAX));
 		}
 		break;
+	case V4L2_CID_VBLANK:
+		ret = imx258_write_reg(imx258, IMX258_REG_VTS,
+				       IMX258_REG_VALUE_16BIT,
+				       imx258->cur_mode->height + ctrl->val);
+		break;
 	default:
 		dev_info(&client->dev,
 			 "ctrl(id:0x%x,val:0x%x) is not handled\n",
@@ -1174,9 +1175,6 @@ static int imx258_init_controls(struct imx258 *imx258)
 				IMX258_VTS_MAX - imx258->cur_mode->height, 1,
 				vblank_def);
 
-	if (imx258->vblank)
-		imx258->vblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
-
 	imx258->hblank = v4l2_ctrl_new_std(
 				ctrl_hdlr, &imx258_ctrl_ops, V4L2_CID_HBLANK,
 				IMX258_PPL_DEFAULT - imx258->cur_mode->width,
-- 
2.42.0