mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-20 14:13:16 +00:00
f07e572f64
bcm2708: boot tested on RPi B+ v1.2 bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G bcm2710: boot tested on RPi 3B v1.2 bcm2711: boot tested on RPi 4B v1.1 4G Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
120 lines
4.0 KiB
Diff
120 lines
4.0 KiB
Diff
From c92b64465d1f6dbfaf189dbf68128ec52fcb0521 Mon Sep 17 00:00:00 2001
|
|
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
Date: Thu, 30 Apr 2020 11:03:00 +0100
|
|
Subject: [PATCH] media: i2c: ov5647: Advertise the correct exposure
|
|
range
|
|
|
|
Exposure is clipped by the VTS of the mode, so needs to be updated as
|
|
and when this is changed.
|
|
|
|
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
---
|
|
drivers/media/i2c/ov5647.c | 47 +++++++++++++++++++++++++++++++-------
|
|
1 file changed, 39 insertions(+), 8 deletions(-)
|
|
|
|
--- a/drivers/media/i2c/ov5647.c
|
|
+++ b/drivers/media/i2c/ov5647.c
|
|
@@ -84,6 +84,11 @@
|
|
#define OV5647_VBLANK_MIN 4
|
|
#define OV5647_VTS_MAX 32767
|
|
|
|
+#define OV5647_EXPOSURE_MIN 4
|
|
+#define OV5647_EXPOSURE_STEP 1
|
|
+#define OV5647_EXPOSURE_DEFAULT 1000
|
|
+#define OV5647_EXPOSURE_MAX 65535
|
|
+
|
|
struct regval_list {
|
|
u16 addr;
|
|
u8 data;
|
|
@@ -117,6 +122,7 @@ struct ov5647 {
|
|
struct v4l2_ctrl *pixel_rate;
|
|
struct v4l2_ctrl *hblank;
|
|
struct v4l2_ctrl *vblank;
|
|
+ struct v4l2_ctrl *exposure;
|
|
bool write_mode_regs;
|
|
};
|
|
|
|
@@ -1202,7 +1208,7 @@ static int ov5647_set_fmt(struct v4l2_su
|
|
* If we have changed modes, write the I2C register list on
|
|
* a stream_on().
|
|
*/
|
|
- int hblank;
|
|
+ int exposure_max, exposure_def, hblank;
|
|
|
|
if (state->mode != mode)
|
|
state->write_mode_regs = true;
|
|
@@ -1223,6 +1229,15 @@ static int ov5647_set_fmt(struct v4l2_su
|
|
mode->vts_def - mode->format.height);
|
|
__v4l2_ctrl_s_ctrl(state->vblank,
|
|
mode->vts_def - mode->format.height);
|
|
+
|
|
+ exposure_max = mode->vts_def - 4;
|
|
+ exposure_def = (exposure_max < OV5647_EXPOSURE_DEFAULT) ?
|
|
+ exposure_max : OV5647_EXPOSURE_DEFAULT;
|
|
+ __v4l2_ctrl_modify_range(state->exposure,
|
|
+ state->exposure->minimum,
|
|
+ exposure_max,
|
|
+ state->exposure->step,
|
|
+ exposure_def);
|
|
}
|
|
|
|
mutex_unlock(&state->lock);
|
|
@@ -1415,6 +1430,19 @@ static int ov5647_s_ctrl(struct v4l2_ctr
|
|
|
|
/* v4l2_ctrl_lock() locks our own mutex */
|
|
|
|
+ if (ctrl->id == V4L2_CID_VBLANK) {
|
|
+ int exposure_max, exposure_def;
|
|
+
|
|
+ /* Update max exposure while meeting expected vblanking */
|
|
+ exposure_max = state->mode->format.height + ctrl->val - 4;
|
|
+ exposure_def = (exposure_max < OV5647_EXPOSURE_DEFAULT) ?
|
|
+ exposure_max : OV5647_EXPOSURE_DEFAULT;
|
|
+ __v4l2_ctrl_modify_range(state->exposure,
|
|
+ state->exposure->minimum,
|
|
+ exposure_max, state->exposure->step,
|
|
+ exposure_def);
|
|
+ }
|
|
+
|
|
/*
|
|
* If the device is not powered up by the host driver do
|
|
* not apply any controls to H/W at this time. Instead
|
|
@@ -1472,7 +1500,7 @@ static int ov5647_probe(struct i2c_clien
|
|
struct v4l2_subdev *sd;
|
|
struct device_node *np = client->dev.of_node;
|
|
u32 xclk_freq;
|
|
- int hblank;
|
|
+ int hblank, exposure_max, exposure_def;
|
|
|
|
sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
|
|
if (!sensor)
|
|
@@ -1525,12 +1553,6 @@ static int ov5647_probe(struct i2c_clien
|
|
0, /* skip_mask */
|
|
V4L2_EXPOSURE_MANUAL); /* default */
|
|
v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
|
|
- V4L2_CID_EXPOSURE,
|
|
- 4, /* min lines */
|
|
- 65535, /* max lines (4+8+4 bits)*/
|
|
- 1, /* step */
|
|
- 1000); /* default number of lines */
|
|
- v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
|
|
V4L2_CID_ANALOGUE_GAIN,
|
|
16, /* min, 16 = 1.0x */
|
|
1023, /* max (10 bits) */
|
|
@@ -1540,6 +1562,15 @@ static int ov5647_probe(struct i2c_clien
|
|
/* Set the default mode before we init the subdev */
|
|
sensor->mode = OV5647_DEFAULT_MODE;
|
|
|
|
+ exposure_max = sensor->mode->vts_def - 4;
|
|
+ exposure_def = (exposure_max < OV5647_EXPOSURE_DEFAULT) ?
|
|
+ exposure_max : OV5647_EXPOSURE_DEFAULT;
|
|
+ sensor->exposure = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
|
|
+ V4L2_CID_EXPOSURE,
|
|
+ OV5647_EXPOSURE_MIN, exposure_max,
|
|
+ OV5647_EXPOSURE_STEP,
|
|
+ exposure_def);
|
|
+
|
|
/* By default, PIXEL_RATE is read only, but it does change per mode */
|
|
sensor->pixel_rate = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
|
|
V4L2_CID_PIXEL_RATE,
|