From: Jacopo Mondi <jacopo@jmondi.org>
To: mchehab@kernel.org, sakari.ailus@linux.intel.com,
hverkuil@xs4all.nl, laurent.pinchart@ideasonboard.com,
roman.kovalivskyi@globallogic.com,
dave.stevenson@raspberrypi.org, naush@raspberrypi.com
Cc: mrodin@de.adit-jv.com, hugues.fruchet@st.com, mripard@kernel.org,
aford173@gmail.com, sudipi@jp.adit-jv.com,
andrew_gabbasov@mentor.com, erosca@de.adit-jv.com,
linux-media@vger.kernel.org, libcamera-devel@lists.libcamera.org,
Dave Stevenson <dave.stevenson@raspberrypi.com>,
Jacopo Mondi <jacopo@jmondi.org>
Subject: [PATCH 25/25] media: ov5647: Advertise the correct exposure range
Date: Tue, 23 Jun 2020 18:55:50 +0200 [thread overview]
Message-ID: <20200623165550.45835-6-jacopo@jmondi.org> (raw)
In-Reply-To: <20200623100815.10674-1-jacopo@jmondi.org>
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Exposure is clipped by the VTS of the mode, so it needs to be updated
when this is changed.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
---
drivers/media/i2c/ov5647.c | 41 ++++++++++++++++++++++++++++++++------
1 file changed, 35 insertions(+), 6 deletions(-)
diff --git a/drivers/media/i2c/ov5647.c b/drivers/media/i2c/ov5647.c
index 209218fb073d6..8f62415c07aad 100644
--- a/drivers/media/i2c/ov5647.c
+++ b/drivers/media/i2c/ov5647.c
@@ -73,6 +73,11 @@
#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;
@@ -108,6 +113,7 @@ struct ov5647 {
struct v4l2_ctrl *pixel_rate;
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *vblank;
+ struct v4l2_ctrl *exposure;
};
static inline struct ov5647 *to_sensor(struct v4l2_subdev *sd)
@@ -1102,10 +1108,10 @@ static int ov5647_set_pad_fmt(struct v4l2_subdev *sd,
{
struct v4l2_mbus_framefmt *fmt = &format->format;
struct ov5647 *sensor = to_sensor(sd);
+ int hblank, exposure_max, exposure_def;
struct ov5647_mode *ov5647_mode_list;
struct ov5647_mode *mode;
unsigned int num_modes;
- int hblank;
/*
* Default mbus code MEDIA_BUS_FMT_SBGGR10_1X10 if the requested one
@@ -1147,6 +1153,13 @@ static int ov5647_set_pad_fmt(struct v4l2_subdev *sd,
1, mode->vts - mode->format.height);
__v4l2_ctrl_s_ctrl(sensor->vblank, mode->vts - mode->format.height);
+ exposure_max = mode->vts - 4;
+ exposure_def = exposure_max < OV5647_EXPOSURE_DEFAULT ? exposure_max
+ : OV5647_EXPOSURE_DEFAULT;
+ __v4l2_ctrl_modify_range(sensor->exposure, sensor->exposure->minimum,
+ exposure_max, sensor->exposure->step,
+ exposure_def);
+
*fmt = mode->format;
mutex_unlock(&sensor->lock);
@@ -1329,6 +1342,18 @@ static int ov5647_s_ctrl(struct v4l2_ctrl *ctrl)
/* 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 = sensor->mode->format.height + ctrl->val - 4;
+ exposure_def = exposure_max < OV5647_EXPOSURE_DEFAULT
+ ? exposure_max : OV5647_EXPOSURE_DEFAULT;
+ __v4l2_ctrl_modify_range(sensor->exposure, sensor->exposure->minimum,
+ exposure_max, sensor->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
@@ -1374,9 +1399,9 @@ static const struct v4l2_ctrl_ops ov5647_ctrl_ops = {
static int ov5647_init_controls(struct ov5647 *sensor)
{
struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd);
- int hblank;
+ int hblank, exposure_max, exposure_def;
- v4l2_ctrl_handler_init(&sensor->ctrls, 8);
+ v4l2_ctrl_handler_init(&sensor->ctrls, 9);
v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
V4L2_CID_AUTOGAIN, 0, 1, 1, 0);
@@ -1388,9 +1413,13 @@ static int ov5647_init_controls(struct ov5647 *sensor)
V4L2_CID_EXPOSURE_AUTO, V4L2_EXPOSURE_MANUAL,
0, V4L2_EXPOSURE_MANUAL);
- /* min: 4 lines; max: 0xffff lines; default: 1000 lines. */
- v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
- V4L2_CID_EXPOSURE, 4, 65535, 1, 1000);
+ exposure_max = sensor->mode->vts - 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);
/* min: 16 = 1.0x; max (10 bits); default: 32 = 2.0x. */
v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
--
2.27.0
next prev parent reply other threads:[~2020-06-23 16:53 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-23 10:07 [PATCH 00/25] media: ov5647: Support RaspberryPi Camera Module v1 Jacopo Mondi
2020-06-23 10:07 ` [PATCH 01/25] dt-bindings: media: ov5647: Document pwdn-gpios Jacopo Mondi
2020-06-23 10:07 ` [PATCH 02/25] dt-bindings: media: ov5647: Document clock-noncontinuous Jacopo Mondi
2020-06-23 10:07 ` [PATCH 03/25] media: ov5647: Add support for PWDN GPIO Jacopo Mondi
2020-07-09 20:04 ` [libcamera-devel] " Dafna Hirschfeld
2020-07-14 12:45 ` Jacopo Mondi
2020-06-23 10:07 ` [PATCH 04/25] media: ov5647: Add support for non-continuous clock mode Jacopo Mondi
2020-06-23 10:07 ` [PATCH 05/25] media: ov5647: Add set_fmt and get_fmt calls Jacopo Mondi
2020-06-23 10:07 ` [PATCH 06/25] media: ov5647: Fix format initialization Jacopo Mondi
2020-06-23 10:07 ` [PATCH 07/25] media: ov5647: Fix style issues Jacopo Mondi
2020-06-23 10:07 ` [PATCH 08/25] media: ov5647: Replace license with SPDX identifier Jacopo Mondi
2020-06-23 10:07 ` [PATCH 09/25] media: ov5647: Fix return value from read/write Jacopo Mondi
2020-06-23 10:08 ` [PATCH 10/25] media: ov5647: Program mode at s_stream(1) time Jacopo Mondi
2020-06-23 16:42 ` [PATCH 11/25] media: ov5647: Implement enum_frame_size() Jacopo Mondi
2020-08-18 7:33 ` Sakari Ailus
2020-08-18 7:38 ` Sakari Ailus
2020-06-23 16:42 ` [PATCH 12/25] media: ov5647: Protect s_stream() with mutex Jacopo Mondi
2020-06-23 16:42 ` [PATCH 13/25] media: ov5647: Support gain, exposure and AWB controls Jacopo Mondi
2020-06-23 16:42 ` [PATCH 14/25] media: ov5647: Rationalize driver structure name Jacopo Mondi
2020-06-23 16:42 ` [PATCH 15/25] media: ov5647: Break out format handling Jacopo Mondi
2020-07-31 11:44 ` Sakari Ailus
2020-06-23 16:49 ` [PATCH 16/25] media: ov5647: Add support for get_selection() Jacopo Mondi
2020-07-09 19:56 ` [libcamera-devel] " Dafna Hirschfeld
2020-06-23 16:49 ` [PATCH 17/25] media: ov5647: Rename SBGGR8 VGA mode Jacopo Mondi
2020-06-23 16:49 ` [PATCH 18/25] media: ov5647: Add SGGBR10_1X10 modes Jacopo Mondi
2020-06-23 16:49 ` [PATCH 19/25] media: ov5647: Implement set_fmt pad operation Jacopo Mondi
2020-06-29 16:54 ` [libcamera-devel] " Dafna Hirschfeld
2020-06-30 10:13 ` Jacopo Mondi
2020-06-30 11:09 ` Dafna Hirschfeld
2020-06-23 16:55 ` [PATCH 20/25] media: ov5647: Program mode only if it has changed Jacopo Mondi
2020-06-29 17:48 ` Dafna Hirschfeld
2020-06-30 7:43 ` Jacopo Mondi
2020-06-30 9:32 ` Dafna Hirschfeld
2020-06-30 10:06 ` Jacopo Mondi
2020-06-30 10:56 ` Dafna Hirschfeld
2020-06-30 12:05 ` Jacopo Mondi
2020-06-30 13:01 ` Dafna Hirschfeld
2020-06-30 14:53 ` [libcamera-devel] " Dave Stevenson
2020-06-30 15:11 ` Dafna Hirschfeld
2020-07-01 7:25 ` Laurent Pinchart
2020-07-03 12:21 ` Jacopo Mondi
2020-07-03 16:33 ` Laurent Pinchart
2020-06-23 16:55 ` [PATCH 21/25] media: ov5647: Set V4L2_SUBDEV_FL_HAS_EVENTS flag Jacopo Mondi
2020-06-23 16:55 ` [PATCH 22/25] media: ov5647: Support V4L2_CID_PIXEL_RATE Jacopo Mondi
2020-06-29 17:01 ` [libcamera-devel] " Dafna Hirschfeld
2020-06-29 21:25 ` Dave Stevenson
2020-06-30 15:13 ` Dave Stevenson
2020-07-01 7:21 ` Laurent Pinchart
2020-06-23 16:55 ` [PATCH 23/25] media: ov5647: Support V4L2_CID_HBLANK control Jacopo Mondi
2020-06-23 16:55 ` [PATCH 24/25] media: ov5647: Support V4L2_CID_VBLANK control Jacopo Mondi
2020-06-23 16:55 ` Jacopo Mondi [this message]
2020-06-29 17:33 ` [PATCH 00/25] media: ov5647: Support RaspberryPi Camera Module v1 Dafna Hirschfeld
2020-06-29 18:08 ` Dafna Hirschfeld
2020-07-10 15:59 ` Dafna Hirschfeld
2020-07-14 12:48 ` Jacopo Mondi
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