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86 lines
2.8 KiB
Diff
86 lines
2.8 KiB
Diff
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From 45a2ad18add0e5c14d1cad5ef0c2c10097b583d9 Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Date: Sat, 12 Feb 2022 12:05:02 +0000
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Subject: [PATCH] media: i2c: ov7251: Add V4L2_CID_HBLANK control
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HBLANK is a fixed value in this driver, so add as a fixed
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read-only control.
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The value is updated during set_format as the V4L2 control is
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dependent on width, even though only one width is actually
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defined.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
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drivers/media/i2c/ov7251.c | 18 +++++++++++++++++-
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1 file changed, 17 insertions(+), 1 deletion(-)
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--- a/drivers/media/i2c/ov7251.c
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+++ b/drivers/media/i2c/ov7251.c
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@@ -37,6 +37,8 @@
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#define OV7251_AEC_EXPO_2 0x3502
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#define OV7251_AEC_AGC_ADJ_0 0x350a
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#define OV7251_AEC_AGC_ADJ_1 0x350b
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+ /* HTS is registers 0x380c and 0x380d */
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+#define OV7251_HTS 0x3a0
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#define OV7251_TIMING_FORMAT1 0x3820
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#define OV7251_TIMING_FORMAT1_VFLIP BIT(2)
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#define OV7251_TIMING_FORMAT2 0x3821
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@@ -114,6 +116,7 @@ struct ov7251 {
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struct v4l2_ctrl_handler ctrls;
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struct v4l2_ctrl *exposure;
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struct v4l2_ctrl *gain;
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+ struct v4l2_ctrl *hblank;
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/* Cached register values */
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u8 aec_pk_manual;
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@@ -1131,6 +1134,7 @@ static int ov7251_set_format(struct v4l2
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struct v4l2_mbus_framefmt *__format;
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struct v4l2_rect *__crop;
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const struct ov7251_mode_info *new_mode;
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+ s64 h_blank;
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int ret = 0;
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mutex_lock(&ov7251->lock);
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@@ -1147,6 +1151,11 @@ static int ov7251_set_format(struct v4l2
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__crop->height = new_mode->height;
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if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
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+ h_blank = OV7251_HTS - new_mode->width;
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+ __v4l2_ctrl_modify_range(ov7251->hblank, h_blank,
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+ h_blank, 1, h_blank);
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+ __v4l2_ctrl_s_ctrl(ov7251->hblank, h_blank);
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+
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ret = __v4l2_ctrl_modify_range(ov7251->exposure,
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1, new_mode->exposure_max,
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1, new_mode->exposure_def);
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@@ -1452,6 +1461,7 @@ static int ov7251_probe(struct i2c_clien
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struct v4l2_ctrl *ctrl;
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struct ov7251 *ov7251;
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unsigned int rate = 0;
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+ u32 h_blank;
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int ret;
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int i;
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@@ -1531,7 +1541,7 @@ static int ov7251_probe(struct i2c_clien
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ov7251->current_mode = &ov7251_mode_info_data[0];
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- v4l2_ctrl_handler_init(&ov7251->ctrls, 9);
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+ v4l2_ctrl_handler_init(&ov7251->ctrls, 10);
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ov7251->ctrls.lock = &ov7251->lock;
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v4l2_ctrl_new_std(&ov7251->ctrls, &ov7251_ctrl_ops,
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@@ -1555,6 +1565,12 @@ static int ov7251_probe(struct i2c_clien
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0, link_freq);
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if (ctrl)
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ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
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+ h_blank = OV7251_HTS - ov7251->current_mode->width;
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+ ov7251->hblank = v4l2_ctrl_new_std(&ov7251->ctrls, NULL,
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+ V4L2_CID_HBLANK, h_blank,
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+ h_blank, 1, h_blank);
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+ if (ov7251->hblank)
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+ ov7251->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
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ov7251->sd.ctrl_handler = &ov7251->ctrls;
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