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https://github.com/openwrt/openwrt.git
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71 lines
2.3 KiB
Diff
71 lines
2.3 KiB
Diff
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From ead4ef32c120f20ee9b1d8f9f0a4f75c2dc14af3 Mon Sep 17 00:00:00 2001
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From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Date: Sun, 16 Oct 2022 09:15:15 +0300
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Subject: [PATCH] media: i2c: imx290: Add exposure time control
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Upstream commit 827c7e69cb2d.
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Support configuring the exposure time, which is expressed as the
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complement of the exposure time (frame period minus integration time).
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The frame period is currently fixed.
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Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Acked-by: Alexander Stein <alexander.stein@ew.tq-group.com>
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Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
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---
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drivers/media/i2c/imx290.c | 16 ++++++++++++++--
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1 file changed, 14 insertions(+), 2 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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@@ -103,6 +103,8 @@
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#define IMX290_PGCTRL_THRU BIT(1)
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#define IMX290_PGCTRL_MODE(n) ((n) << 4)
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+#define IMX290_VMAX_DEFAULT 1125
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+
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static const char * const imx290_supply_name[] = {
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"vdda",
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"vddd",
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@@ -176,7 +178,7 @@ static const char * const imx290_test_pa
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static const struct imx290_regval imx290_global_init_settings[] = {
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{ IMX290_CTRL_07, IMX290_WINMODE_1080P },
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- { IMX290_VMAX, 1125 },
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+ { IMX290_VMAX, IMX290_VMAX_DEFAULT },
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{ IMX290_EXTCK_FREQ, 0x2520 },
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{ IMX290_WINWV_OB, 12 },
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{ IMX290_WINPH, 0 },
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@@ -480,6 +482,12 @@ static int imx290_set_ctrl(struct v4l2_c
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case V4L2_CID_GAIN:
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ret = imx290_write(imx290, IMX290_GAIN, ctrl->val, NULL);
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break;
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+
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+ case V4L2_CID_EXPOSURE:
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+ ret = imx290_write(imx290, IMX290_SHS1,
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+ IMX290_VMAX_DEFAULT - ctrl->val - 1, NULL);
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+ break;
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+
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case V4L2_CID_TEST_PATTERN:
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if (ctrl->val) {
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imx290_write(imx290, IMX290_BLKLEVEL, 0, &ret);
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@@ -1008,12 +1016,16 @@ static int imx290_probe(struct i2c_clien
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*/
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imx290_entity_init_cfg(&imx290->sd, NULL);
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- v4l2_ctrl_handler_init(&imx290->ctrls, 4);
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+ v4l2_ctrl_handler_init(&imx290->ctrls, 5);
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imx290->ctrls.lock = &imx290->lock;
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v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
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V4L2_CID_GAIN, 0, 72, 1, 0);
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+ v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
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+ V4L2_CID_EXPOSURE, 1, IMX290_VMAX_DEFAULT - 2, 1,
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+ IMX290_VMAX_DEFAULT - 2);
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+
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imx290->link_freq =
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v4l2_ctrl_new_int_menu(&imx290->ctrls, &imx290_ctrl_ops,
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V4L2_CID_LINK_FREQ,
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