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media: i2c: ov9282: Add selection API calls for cropping info

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As required by libcamera, add the relevant cropping targets
to report which portion of the sensor is being read out in
any mode.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Dave Stevenson 2022-10-28 17:08:59 +01:00 committed by Mauro Carvalho Chehab
parent a387834c16
commit 2cb730c666
1 changed files with 75 additions and 0 deletions
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75
drivers/media/i2c/ov9282.c
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@ -66,6 +66,17 @@
#define OV9282_PIXEL_RATE (OV9282_LINK_FREQ * 2 * \
OV9282_NUM_DATA_LANES / 10)
/*
* OV9282 native and active pixel array size.
* 8 dummy rows/columns on each edge of a 1280x800 active array
*/
#define OV9282_NATIVE_WIDTH 1296U
#define OV9282_NATIVE_HEIGHT 816U
#define OV9282_PIXEL_ARRAY_LEFT 8U
#define OV9282_PIXEL_ARRAY_TOP 8U
#define OV9282_PIXEL_ARRAY_WIDTH 1280U
#define OV9282_PIXEL_ARRAY_HEIGHT 800U
#define OV9282_REG_MIN 0x00
#define OV9282_REG_MAX 0xfffff
@ -109,6 +120,7 @@ struct ov9282_mode {
u32 vblank_min;
u32 vblank_max;
u32 link_freq_idx;
struct v4l2_rect crop;
struct ov9282_reg_list reg_list;
};
@ -280,6 +292,16 @@ static const struct ov9282_mode supported_modes[] = {
.vblank_min = 41,
.vblank_max = 51540,
.link_freq_idx = 0,
.crop = {
/*
* Note that this mode takes the top 720 lines from the
* 800 of the sensor. It does not take a middle crop.
*/
.left = OV9282_PIXEL_ARRAY_LEFT,
.top = OV9282_PIXEL_ARRAY_TOP,
.width = 1280,
.height = 720
},
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_1280x720_regs),
.regs = mode_1280x720_regs,
@ -720,6 +742,58 @@ static int ov9282_init_pad_cfg(struct v4l2_subdev *sd,
return ov9282_set_pad_format(sd, sd_state, &fmt);
}
static const struct v4l2_rect *
__ov9282_get_pad_crop(struct ov9282 *ov9282,
struct v4l2_subdev_state *sd_state,
unsigned int pad, enum v4l2_subdev_format_whence which)
{
switch (which) {
case V4L2_SUBDEV_FORMAT_TRY:
return v4l2_subdev_get_try_crop(&ov9282->sd, sd_state, pad);
case V4L2_SUBDEV_FORMAT_ACTIVE:
return &ov9282->cur_mode->crop;
}
return NULL;
}
static int ov9282_get_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
switch (sel->target) {
case V4L2_SEL_TGT_CROP: {
struct ov9282 *ov9282 = to_ov9282(sd);
mutex_lock(&ov9282->mutex);
sel->r = *__ov9282_get_pad_crop(ov9282, sd_state, sel->pad,
sel->which);
mutex_unlock(&ov9282->mutex);
return 0;
}
case V4L2_SEL_TGT_NATIVE_SIZE:
sel->r.top = 0;
sel->r.left = 0;
sel->r.width = OV9282_NATIVE_WIDTH;
sel->r.height = OV9282_NATIVE_HEIGHT;
return 0;
case V4L2_SEL_TGT_CROP_DEFAULT:
case V4L2_SEL_TGT_CROP_BOUNDS:
sel->r.top = OV9282_PIXEL_ARRAY_TOP;
sel->r.left = OV9282_PIXEL_ARRAY_LEFT;
sel->r.width = OV9282_PIXEL_ARRAY_WIDTH;
sel->r.height = OV9282_PIXEL_ARRAY_HEIGHT;
return 0;
}
return -EINVAL;
}
/**
* ov9282_start_streaming() - Start sensor stream
* @ov9282: pointer to ov9282 device
@ -938,6 +1012,7 @@ static const struct v4l2_subdev_pad_ops ov9282_pad_ops = {
.enum_frame_size = ov9282_enum_frame_size,
.get_fmt = ov9282_get_pad_format,
.set_fmt = ov9282_set_pad_format,
.get_selection = ov9282_get_selection,
};
static const struct v4l2_subdev_ops ov9282_subdev_ops = {