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media: atomisp: Make atomisp_init_sensor() check if the sensor supports binning 

Make atomisp_init_sensor() check if the sensor supports binning.

This is a preparation patch for using the selection / crop support
to determine the padding values to use with a specific sensor.

Link: https://lore.kernel.org/r/20230529103741.11904-18-hdegoede@redhat.com

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Hans de Goede 2023-05-29 11:37:37 +01:00 committed by Mauro Carvalho Chehab
parent a08183b846
commit 62866c23c7
2 changed files with 28 additions and 3 deletions
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1
drivers/staging/media/atomisp/pci/atomisp_internal.h
View File

@ -126,6 +126,7 @@ struct atomisp_input_subdev {
unsigned int type;
enum atomisp_camera_port port;
u32 code; /* MEDIA_BUS_FMT_* */
bool binning_support;
bool crop_support;
struct v4l2_subdev *camera;
/* Sensor rects for sensors which support crop */

30
drivers/staging/media/atomisp/pci/atomisp_v4l2.c
View File

@ -934,11 +934,12 @@ v4l2_device_failed:
static void atomisp_init_sensor(struct atomisp_input_subdev *input)
{
struct v4l2_subdev_mbus_code_enum mbus_code_enum = { };
struct v4l2_subdev_frame_size_enum fse = { };
struct v4l2_subdev_state sd_state = {
.pads = &input->pad_cfg,
};
struct v4l2_subdev_selection sel = { };
int err;
int i, err;
mbus_code_enum.which = V4L2_SUBDEV_FORMAT_ACTIVE;
err = v4l2_subdev_call(input->camera, pad, enum_mbus_code, NULL, &mbus_code_enum);
@ -961,6 +962,28 @@ static void atomisp_init_sensor(struct atomisp_input_subdev *input)
input->active_rect = sel.r;
/*
* Check for a framesize with half active_rect width and height,
* if found assume the sensor supports binning.
* Do this before changing the crop-rect since that may influence
* enum_frame_size results.
*/
for (i = 0; ; i++) {
fse.index = i;
fse.code = input->code;
fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
err = v4l2_subdev_call(input->camera, pad, enum_frame_size, NULL, &fse);
if (err)
break;
if (fse.min_width <= (input->active_rect.width / 2) &&
fse.min_height <= (input->active_rect.height / 2)) {
input->binning_support = true;
break;
}
}
/*
* The ISP also wants the non-active pixels at the border of the sensor
* for padding, set the crop rect to cover the entire sensor instead
@ -983,9 +1006,10 @@ static void atomisp_init_sensor(struct atomisp_input_subdev *input)
if (err)
return;
dev_info(input->camera->dev, "Supports crop native %dx%d active %dx%d\n",
dev_info(input->camera->dev, "Supports crop native %dx%d active %dx%d binning %d\n",
input->native_rect.width, input->native_rect.height,
input->active_rect.width, input->active_rect.height);
input->active_rect.width, input->active_rect.height,
input->binning_support);
input->crop_support = true;
}