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Subject: media: i2c: imx219: Calculate crop rectangle dynamically
Author: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Date: Sun Sep 24 18:33:07 2023 +0300
Calculate the crop rectangle size and location dynamically when setting
the format, instead of storing it in the imx219_mode structure. This
removes duplicated information from the mode, to guarantee consistency.
Signed-off-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mo...@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
drivers/media/i2c/imx219.c | 45 +++++++++++++++------------------------------
1 file changed, 15 insertions(+), 30 deletions(-)
---
diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c
index bf1c2a1dad95..2b88c5b8a7bf 100644
--- a/drivers/media/i2c/imx219.c
+++ b/drivers/media/i2c/imx219.c
@@ -18,6 +18,7 @@
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
+#include <linux/minmax.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
@@ -153,9 +154,6 @@ struct imx219_mode {
/* Frame height */
unsigned int height;
- /* Analog crop rectangle. */
- struct v4l2_rect crop;
-
/* V-timing */
unsigned int vts_def;
};
@@ -292,48 +290,24 @@ static const struct imx219_mode supported_modes[] = {
/* 8MPix 15fps mode */
.width = 3280,
.height = 2464,
- .crop = {
- .left = IMX219_PIXEL_ARRAY_LEFT,
- .top = IMX219_PIXEL_ARRAY_TOP,
- .width = 3280,
- .height = 2464
- },
.vts_def = 3526,
},
{
/* 1080P 30fps cropped */
.width = 1920,
.height = 1080,
- .crop = {
- .left = 688,
- .top = 700,
- .width = 1920,
- .height = 1080
- },
.vts_def = 1763,
},
{
/* 2x2 binned 30fps mode */
.width = 1640,
.height = 1232,
- .crop = {
- .left = IMX219_PIXEL_ARRAY_LEFT,
- .top = IMX219_PIXEL_ARRAY_TOP,
- .width = 3280,
- .height = 2464
- },
.vts_def = 1763,
},
{
/* 640x480 30fps mode */
.width = 640,
.height = 480,
- .crop = {
- .left = 1008,
- .top = 760,
- .width = 1280,
- .height = 960
- },
.vts_def = 1763,
},
};
@@ -844,6 +818,7 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd,
int exposure_max, exposure_def, hblank;
struct v4l2_mbus_framefmt *format;
struct v4l2_rect *crop;
+ unsigned int bin_h, bin_v;
mode = v4l2_find_nearest_size(supported_modes,
ARRAY_SIZE(supported_modes),
@@ -853,10 +828,20 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd,
imx219_update_pad_format(imx219, mode, &fmt->format, fmt->format.code);
format = v4l2_subdev_get_pad_format(sd, sd_state, 0);
- crop = v4l2_subdev_get_pad_crop(sd, sd_state, 0);
-
*format = fmt->format;
- *crop = mode->crop;
+
+ /*
+ * Use binning to maximize the crop rectangle size, and centre it in the
+ * sensor.
+ */
+ bin_h = min(IMX219_PIXEL_ARRAY_WIDTH / format->width, 2U);
+ bin_v = min(IMX219_PIXEL_ARRAY_HEIGHT / format->height, 2U);
+
+ crop = v4l2_subdev_get_pad_crop(sd, sd_state, 0);
+ crop->width = format->width * bin_h;
+ crop->height = format->height * bin_v;
+ crop->left = (IMX219_NATIVE_WIDTH - crop->width) / 2;
+ crop->top = (IMX219_NATIVE_HEIGHT - crop->height) / 2;
if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
/* Update limits and set FPS to default */
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