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20ea6adbf1
Build system: x86_64 Build-tested: bcm2708, bcm2709, bcm2710, bcm2711 Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B Signed-off-by: Marty Jones <mj8263788@gmail.com> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
190 lines
5.2 KiB
Diff
190 lines
5.2 KiB
Diff
From 08cc1dcf1437d65dbb36dda27db29ec3a689101f Mon Sep 17 00:00:00 2001
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From: David Plowman <david.plowman@raspberrypi.com>
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Date: Mon, 22 Nov 2021 13:10:39 +0000
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Subject: [PATCH] media: i2c: ov5647: Support HFLIP and VFLIP
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Add these missing V4L2 controls. Tested binned and full resolution
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modes in all four orientations using Raspberry Pi running libcamera.
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Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
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---
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drivers/media/i2c/ov5647.c | 76 +++++++++++++++++++++++++++++++++++---
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1 file changed, 70 insertions(+), 6 deletions(-)
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--- a/drivers/media/i2c/ov5647.c
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+++ b/drivers/media/i2c/ov5647.c
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@@ -54,6 +54,8 @@
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#define OV5647_REG_GAIN_LO 0x350b
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#define OV5647_REG_VTS_HI 0x380e
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#define OV5647_REG_VTS_LO 0x380f
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+#define OV5647_REG_VFLIP 0x3820
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+#define OV5647_REG_HFLIP 0x3821
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#define OV5647_REG_FRAME_OFF_NUMBER 0x4202
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#define OV5647_REG_MIPI_CTRL00 0x4800
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#define OV5647_REG_MIPI_CTRL14 0x4814
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@@ -108,6 +110,8 @@ struct ov5647 {
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struct v4l2_ctrl *hblank;
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struct v4l2_ctrl *vblank;
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struct v4l2_ctrl *exposure;
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+ struct v4l2_ctrl *hflip;
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+ struct v4l2_ctrl *vflip;
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bool streaming;
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};
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@@ -136,7 +140,7 @@ static struct regval_list ov5647_2592x19
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{0x3036, 0x69},
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{0x303c, 0x11},
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{0x3106, 0xf5},
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- {0x3821, 0x06},
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+ {0x3821, 0x00},
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{0x3820, 0x00},
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{0x3827, 0xec},
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{0x370c, 0x03},
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@@ -225,7 +229,7 @@ static struct regval_list ov5647_1080p30
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{0x3036, 0x62},
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{0x303c, 0x11},
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{0x3106, 0xf5},
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- {0x3821, 0x06},
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+ {0x3821, 0x00},
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{0x3820, 0x00},
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{0x3827, 0xec},
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{0x370c, 0x03},
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@@ -389,7 +393,7 @@ static struct regval_list ov5647_2x2binn
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{0x4800, 0x24},
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{0x3503, 0x03},
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{0x3820, 0x41},
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- {0x3821, 0x07},
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+ {0x3821, 0x01},
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{0x350a, 0x00},
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{0x350b, 0x10},
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{0x3500, 0x00},
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@@ -405,7 +409,7 @@ static struct regval_list ov5647_640x480
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{0x3035, 0x11},
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{0x3036, 0x46},
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{0x303c, 0x11},
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- {0x3821, 0x07},
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+ {0x3821, 0x01},
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{0x3820, 0x41},
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{0x370c, 0x03},
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{0x3612, 0x59},
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@@ -946,6 +950,25 @@ static const struct v4l2_subdev_video_op
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.s_stream = ov5647_s_stream,
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};
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+/* This function returns the mbus code for the current settings of the
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+ HFLIP and VFLIP controls. */
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+
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+static u32 ov5647_get_mbus_code(struct v4l2_subdev *sd)
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+{
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+ struct ov5647 *sensor = to_sensor(sd);
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+ /* The control values are only 0 or 1. */
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+ int index = sensor->hflip->val | (sensor->vflip->val << 1);
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+
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+ static const u32 codes[4] = {
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+ MEDIA_BUS_FMT_SGBRG10_1X10,
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+ MEDIA_BUS_FMT_SBGGR10_1X10,
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+ MEDIA_BUS_FMT_SRGGB10_1X10,
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+ MEDIA_BUS_FMT_SGRBG10_1X10
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+ };
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+
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+ return codes[index];
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+}
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+
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static int ov5647_enum_mbus_code(struct v4l2_subdev *sd,
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struct v4l2_subdev_state *sd_state,
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struct v4l2_subdev_mbus_code_enum *code)
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@@ -953,7 +976,7 @@ static int ov5647_enum_mbus_code(struct
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if (code->index > 0)
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return -EINVAL;
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- code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
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+ code->code = ov5647_get_mbus_code(sd);
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return 0;
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}
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@@ -964,7 +987,7 @@ static int ov5647_enum_frame_size(struct
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{
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const struct v4l2_mbus_framefmt *fmt;
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- if (fse->code != MEDIA_BUS_FMT_SBGGR10_1X10 ||
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+ if (fse->code != ov5647_get_mbus_code(sd) ||
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fse->index >= ARRAY_SIZE(ov5647_modes))
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return -EINVAL;
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@@ -997,6 +1020,8 @@ static int ov5647_get_pad_fmt(struct v4l
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}
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*fmt = *sensor_format;
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+ /* The code we pass back must reflect the current h/vflips. */
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+ fmt->code = ov5647_get_mbus_code(sd);
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mutex_unlock(&sensor->lock);
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return 0;
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@@ -1044,6 +1069,8 @@ static int ov5647_set_pad_fmt(struct v4l
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exposure_def);
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}
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*fmt = mode->format;
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+ /* The code we pass back must reflect the current h/vflips. */
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+ fmt->code = ov5647_get_mbus_code(sd);
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mutex_unlock(&sensor->lock);
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return 0;
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@@ -1219,6 +1246,25 @@ static int ov5647_s_exposure(struct v4l2
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return ov5647_write(sd, OV5647_REG_EXP_LO, (val & 0xf) << 4);
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}
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+static int ov5647_s_flip( struct v4l2_subdev *sd, u16 reg, u32 ctrl_val)
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+{
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+ int ret;
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+ u8 reg_val;
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+
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+ /* Set or clear bit 1 and leave everything else alone. */
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+ ret = ov5647_read(sd, reg, ®_val);
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+ if (ret == 0) {
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+ if (ctrl_val)
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+ reg_val |= 2;
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+ else
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+ reg_val &= ~2;
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+
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+ ret = ov5647_write(sd, reg, reg_val);
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+ }
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+
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+ return ret;
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+}
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+
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static int ov5647_s_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct ov5647 *sensor = container_of(ctrl->handler,
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@@ -1277,6 +1323,14 @@ static int ov5647_s_ctrl(struct v4l2_ctr
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/* Read-only, but we adjust it based on mode. */
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break;
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+ case V4L2_CID_HFLIP:
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+ /* There's an in-built hflip in the sensor, so account for that here. */
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+ ov5647_s_flip(sd, OV5647_REG_HFLIP, !ctrl->val);
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+ break;
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+ case V4L2_CID_VFLIP:
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+ ov5647_s_flip(sd, OV5647_REG_VFLIP, ctrl->val);
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+ break;
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+
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default:
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dev_info(&client->dev,
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"Control (id:0x%x, val:0x%x) not supported\n",
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@@ -1343,6 +1397,16 @@ static int ov5647_init_controls(struct o
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sensor->mode->vts -
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sensor->mode->format.height);
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+ sensor->hflip = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
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+ V4L2_CID_HFLIP, 0, 1, 1, 0);
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+ if (sensor->hflip)
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+ sensor->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
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+
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+ sensor->vflip = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
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+ V4L2_CID_VFLIP, 0, 1, 1, 0);
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+ if (sensor->vflip)
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+ sensor->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
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+
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v4l2_fwnode_device_parse(dev, &props);
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v4l2_ctrl_new_fwnode_properties(&sensor->ctrls, &ov5647_ctrl_ops,
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