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From e1b03ea9e84320e6bf36a1486abaebbceadd7fc7 Mon Sep 17 00:00:00 2001
From: Ben Benson <ben.benson@raspberrypi.com>
Date: Fri, 21 Jul 2023 15:59:51 +0100
Subject: [PATCH] drivers: media: imx296: Updated imx296 driver for external
trigger
Updated imx296 driver to support external trigger mode via XTR pin.
Added module parameter to control this mode.
Signed-off-by: Ben Benson <ben.benson@raspberrypi.com>
---
drivers/media/i2c/imx296.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/drivers/media/i2c/imx296.c
+++ b/drivers/media/i2c/imx296.c
@@ -20,6 +20,10 @@
#include <media/v4l2-fwnode.h>
#include <media/v4l2-subdev.h>
+static int trigger_mode;
+module_param(trigger_mode, int, 0644);
+MODULE_PARM_DESC(trigger_mode, "Set trigger mode: 0=default, 1=XTRIG");
+
#define IMX296_PIXEL_ARRAY_WIDTH 1456
#define IMX296_PIXEL_ARRAY_HEIGHT 1088
@@ -645,6 +649,12 @@ static int imx296_stream_on(struct imx29
imx296_write(sensor, IMX296_CTRL00, 0, &ret);
usleep_range(2000, 5000);
+
+ if (trigger_mode == 1) {
+ imx296_write(sensor, IMX296_CTRL0B, IMX296_CTRL0B_TRIGEN, &ret);
+ imx296_write(sensor, IMX296_LOWLAGTRG, IMX296_LOWLAGTRG_FAST, &ret);
+ }
+
imx296_write(sensor, IMX296_CTRL0A, 0, &ret);
/* vflip and hflip cannot change during streaming */
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