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60 lines
1.9 KiB
Diff
60 lines
1.9 KiB
Diff
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From b6117da06f6d72d847985e5f179db62beb0227ca Mon Sep 17 00:00:00 2001
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From: David Plowman <david.plowman@raspberrypi.com>
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Date: Wed, 17 Feb 2021 18:08:12 +0000
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Subject: [PATCH] media: i2c: imx290: Fix up exposure calcuations and
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ranges
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Should now correspond exactly to the datasheet.
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Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
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---
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drivers/media/i2c/imx290.c | 14 +++++++-------
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1 file changed, 7 insertions(+), 7 deletions(-)
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--- a/drivers/media/i2c/imx290.c
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+++ b/drivers/media/i2c/imx290.c
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@@ -50,7 +50,7 @@ enum imx290_clk_index {
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#define IMX290_HMAX_MIN_4LANE 2200 /* Min of 2200 pixels = 60fps */
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#define IMX290_HMAX_MAX 0xffff
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-#define IMX290_EXPOSURE_MIN 2
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+#define IMX290_EXPOSURE_MIN 1
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#define IMX290_EXPOSURE_STEP 1
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#define IMX290_EXPOSURE_LOW 0x3020
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#define IMX290_PGCTRL 0x308c
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@@ -584,7 +584,7 @@ static int imx290_set_gain(struct imx290
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static int imx290_set_exposure(struct imx290 *imx290, u32 value)
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{
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u32 exposure = (imx290->current_mode->height + imx290->vblank->val) -
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- value;
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+ value - 1;
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int ret;
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ret = imx290_write_buffered_reg(imx290, IMX290_EXPOSURE_LOW, 3,
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@@ -855,10 +855,10 @@ static int imx290_set_fmt(struct v4l2_su
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}
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if (imx290->exposure)
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__v4l2_ctrl_modify_range(imx290->exposure,
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- mode->vmax - mode->height,
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- mode->vmax - 4,
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+ IMX290_EXPOSURE_MIN,
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+ mode->vmax - 2,
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IMX290_EXPOSURE_STEP,
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- mode->vmax - 4);
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+ mode->vmax - 2);
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}
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*format = fmt->format;
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@@ -1345,9 +1345,9 @@ static int imx290_probe(struct i2c_clien
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imx290->exposure = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
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V4L2_CID_EXPOSURE,
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IMX290_EXPOSURE_MIN,
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- mode->vmax - 4,
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+ mode->vmax - 2,
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IMX290_EXPOSURE_STEP,
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- mode->vmax - 4);
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+ mode->vmax - 2);
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imx290->hflip = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
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V4L2_CID_HFLIP, 0, 1, 1, 0);
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