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41 lines
1.3 KiB
Diff
41 lines
1.3 KiB
Diff
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From 2b6edd13bb5152c659466987846b481df8b37393 Mon Sep 17 00:00:00 2001
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From: David Plowman <david.plowman@raspberrypi.com>
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Date: Wed, 8 Sep 2021 14:15:17 +0100
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Subject: [PATCH] media: i2c: imx477: Allow control of on-sensor DPC
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A module parameter "dpc_enable" is added to allow the control of the
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sensor's on-board DPC (Defective Pixel Correction) function.
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This is a global setting to be configured before using the sensor;
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there is no intention that this would ever be changed on-the-fly.
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Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
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---
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drivers/media/i2c/imx477.c | 8 ++++++++
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1 file changed, 8 insertions(+)
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--- a/drivers/media/i2c/imx477.c
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+++ b/drivers/media/i2c/imx477.c
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@@ -21,6 +21,10 @@
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#include <media/v4l2-fwnode.h>
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#include <media/v4l2-mediabus.h>
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+static int dpc_enable = 1;
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+module_param(dpc_enable, int, 0644);
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+MODULE_PARM_DESC(dpc_enable, "Enable on-sensor DPC");
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+
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#define IMX477_REG_VALUE_08BIT 1
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#define IMX477_REG_VALUE_16BIT 2
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@@ -1713,6 +1717,10 @@ static int imx477_start_streaming(struct
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return ret;
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}
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+ /* Set on-sensor DPC. */
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+ imx477_write_reg(imx477, 0x0b05, IMX477_REG_VALUE_08BIT, !!dpc_enable);
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+ imx477_write_reg(imx477, 0x0b06, IMX477_REG_VALUE_08BIT, !!dpc_enable);
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+
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/* Apply customized values from user */
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ret = __v4l2_ctrl_handler_setup(imx477->sd.ctrl_handler);
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if (ret)
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