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