113 lines
3.3 KiB
Diff
113 lines
3.3 KiB
Diff
From 6c7ebe661716fc23c52cd800a173e4675b10202a Mon Sep 17 00:00:00 2001
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From: Mathias Anhalt <mathiasanhalt@web.de>
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Date: Wed, 3 Feb 2021 20:34:09 +0100
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Subject: [PATCH] Added hflip and vflip controls to ov9281
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Signed-off-by: Mathias Anhalt <mathiasanhalt@web.de>
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---
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drivers/media/i2c/ov9281.c | 58 +++++++++++++++++++++++++++++++++++++-
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1 file changed, 57 insertions(+), 1 deletion(-)
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--- a/drivers/media/i2c/ov9281.c
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+++ b/drivers/media/i2c/ov9281.c
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@@ -40,6 +40,10 @@
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#define CHIP_ID 0x9281
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#define OV9281_REG_CHIP_ID 0x300a
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+#define OV9281_REG_TIMING_FORMAT_1 0x3820
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+#define OV9281_REG_TIMING_FORMAT_2 0x3821
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+#define OV9281_FLIP_BIT BIT(2)
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+
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#define OV9281_REG_CTRL_MODE 0x0100
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#define OV9281_MODE_SW_STANDBY 0x0
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#define OV9281_MODE_STREAMING BIT(0)
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@@ -123,6 +127,8 @@ struct ov9281 {
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struct v4l2_ctrl *digi_gain;
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struct v4l2_ctrl *hblank;
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struct v4l2_ctrl *vblank;
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+ struct v4l2_ctrl *hflip;
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+ struct v4l2_ctrl *vflip;
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struct v4l2_ctrl *pixel_rate;
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struct v4l2_ctrl *test_pattern;
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struct mutex mutex;
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@@ -615,6 +621,42 @@ static int ov9281_enable_test_pattern(st
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OV9281_REG_VALUE_08BIT, val);
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}
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+static int ov9281_set_ctrl_hflip(struct ov9281 *ov9281, int value)
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+{
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+ u32 current_val;
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+ int ret = ov9281_read_reg(ov9281->client, OV9281_REG_TIMING_FORMAT_2,
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+ OV9281_REG_VALUE_08BIT, ¤t_val);
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+ if (!ret) {
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+ if (value)
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+ current_val |= OV9281_FLIP_BIT;
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+ else
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+ current_val &= ~OV9281_FLIP_BIT;
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+ return ov9281_write_reg(ov9281->client,
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+ OV9281_REG_TIMING_FORMAT_2,
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+ OV9281_REG_VALUE_08BIT,
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+ current_val);
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+ }
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+ return ret;
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+}
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+
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+static int ov9281_set_ctrl_vflip(struct ov9281 *ov9281, int value)
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+{
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+ u32 current_val;
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+ int ret = ov9281_read_reg(ov9281->client, OV9281_REG_TIMING_FORMAT_1,
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+ OV9281_REG_VALUE_08BIT, ¤t_val);
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+ if (!ret) {
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+ if (value)
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+ current_val |= OV9281_FLIP_BIT;
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+ else
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+ current_val &= ~OV9281_FLIP_BIT;
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+ return ov9281_write_reg(ov9281->client,
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+ OV9281_REG_TIMING_FORMAT_1,
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+ OV9281_REG_VALUE_08BIT,
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+ current_val);
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+ }
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+ return ret;
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+}
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+
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static const struct v4l2_rect *
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__ov9281_get_pad_crop(struct ov9281 *ov9281, struct v4l2_subdev_pad_config *cfg,
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unsigned int pad, enum v4l2_subdev_format_whence which)
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@@ -933,6 +975,12 @@ static int ov9281_set_ctrl(struct v4l2_c
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return 0;
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switch (ctrl->id) {
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+ case V4L2_CID_HFLIP:
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+ ret = ov9281_set_ctrl_hflip(ov9281, ctrl->val);
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+ break;
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+ case V4L2_CID_VFLIP:
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+ ret = ov9281_set_ctrl_vflip(ov9281, ctrl->val);
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+ break;
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case V4L2_CID_EXPOSURE:
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/* 4 least significant bits of expsoure are fractional part */
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ret = ov9281_write_reg(ov9281->client, OV9281_REG_EXPOSURE,
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@@ -981,7 +1029,7 @@ static int ov9281_initialize_controls(st
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handler = &ov9281->ctrl_handler;
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mode = ov9281->cur_mode;
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- ret = v4l2_ctrl_handler_init(handler, 8);
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+ ret = v4l2_ctrl_handler_init(handler, 9);
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if (ret)
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return ret;
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handler->lock = &ov9281->mutex;
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@@ -1022,6 +1070,14 @@ static int ov9281_initialize_controls(st
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OV9281_GAIN_STEP,
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OV9281_GAIN_DEFAULT);
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+ ov9281->vflip = v4l2_ctrl_new_std(handler, &ov9281_ctrl_ops,
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+ V4L2_CID_VFLIP,
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+ 0, 1, 1, 0);
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+
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+ ov9281->hflip = v4l2_ctrl_new_std(handler, &ov9281_ctrl_ops,
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+ V4L2_CID_HFLIP,
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+ 0, 1, 1, 0);
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+
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ov9281->test_pattern =
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v4l2_ctrl_new_std_menu_items(handler, &ov9281_ctrl_ops,
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V4L2_CID_TEST_PATTERN,
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