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95 lines
3.1 KiB
Diff
95 lines
3.1 KiB
Diff
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From f32d3672fe2349b0ed3f2989dc64ac44f78339cb Mon Sep 17 00:00:00 2001
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From: David Plowman <david.plowman@raspberrypi.com>
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Date: Wed, 22 Mar 2023 12:01:57 +0000
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Subject: [PATCH 0427/1085] drivers: media: i2c: imx708: Fix WIDE_DYNAMIC_RANGE
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control with long exposure
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Setting V4L2_CID_WIDE_DYNAMIC_RANGE was causing the long exposure
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shift count to be reset, which is incorrect if the user has already
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changed the frame length to cause it to have a non-zero value.
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Because it only updates control ranges and doesn't set any registers,
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the control can also be applied when the sensor is not powered on.
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Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
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---
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drivers/media/i2c/imx708.c | 45 ++++++++++++++++++++++++--------------
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1 file changed, 28 insertions(+), 17 deletions(-)
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--- a/drivers/media/i2c/imx708.c
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+++ b/drivers/media/i2c/imx708.c
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@@ -171,7 +171,7 @@ struct imx708_mode {
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/* Not all modes have the same exposure lines step. */
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u32 exposure_lines_step;
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- /* HDR flag, currently not used at runtime */
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+ /* HDR flag, used for checking if the current mode is HDR */
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bool hdr;
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};
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@@ -1060,9 +1060,6 @@ static void imx708_set_framing_limits(st
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unsigned int hblank;
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const struct imx708_mode *mode = imx708->mode;
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- /* Default to no long exposure multiplier */
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- imx708->long_exp_shift = 0;
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-
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__v4l2_ctrl_modify_range(imx708->pixel_rate,
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mode->pixel_rate, mode->pixel_rate,
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1, mode->pixel_rate);
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@@ -1091,12 +1088,33 @@ static int imx708_set_ctrl(struct v4l2_c
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unsigned int code, num_modes;
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int ret = 0;
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- /*
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- * The VBLANK control may change the limits of usable exposure, so check
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- * and adjust if necessary.
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- */
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- if (ctrl->id == V4L2_CID_VBLANK)
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+ switch (ctrl->id) {
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+ case V4L2_CID_VBLANK:
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+ /*
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+ * The VBLANK control may change the limits of usable exposure,
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+ * so check and adjust if necessary.
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+ */
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imx708_adjust_exposure_range(imx708, ctrl);
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+ break;
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+
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+ case V4L2_CID_WIDE_DYNAMIC_RANGE:
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+ /*
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+ * The WIDE_DYNAMIC_RANGE control can also be applied immediately
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+ * as it doesn't set any registers. Don't do anything if the mode
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+ * already matches.
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+ */
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+ if (imx708->mode && imx708->mode->hdr != ctrl->val) {
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+ code = imx708_get_format_code(imx708);
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+ get_mode_table(code, &mode_list, &num_modes, ctrl->val);
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+ imx708->mode = v4l2_find_nearest_size(mode_list,
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+ num_modes,
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+ width, height,
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+ imx708->mode->width,
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+ imx708->mode->height);
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+ imx708_set_framing_limits(imx708);
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+ }
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+ break;
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+ }
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/*
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* Applying V4L2 control value only happens
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@@ -1158,14 +1176,7 @@ static int imx708_set_ctrl(struct v4l2_c
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imx708->notify_gains->p_new.p_u32[3]);
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break;
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case V4L2_CID_WIDE_DYNAMIC_RANGE:
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- code = imx708_get_format_code(imx708);
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- get_mode_table(code, &mode_list, &num_modes, ctrl->val);
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- imx708->mode = v4l2_find_nearest_size(mode_list,
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- num_modes,
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- width, height,
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- imx708->mode->width,
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- imx708->mode->height);
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- imx708_set_framing_limits(imx708);
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+ /* Already handled above. */
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break;
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default:
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dev_info(&client->dev,
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