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path: root/drivers/media/i2c/imx219.c
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Diffstat (limited to 'drivers/media/i2c/imx219.c')
-rw-r--r--drivers/media/i2c/imx219.c99
1 files changed, 56 insertions, 43 deletions
diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c
index c680aa6c3a55..bc55fe2a93b4 100644
--- a/drivers/media/i2c/imx219.c
+++ b/drivers/media/i2c/imx219.c
@@ -68,6 +68,7 @@
#define IMX219_EXPOSURE_STEP 1
#define IMX219_EXPOSURE_DEFAULT 0x640
#define IMX219_EXPOSURE_MAX 65535
+#define IMX219_EXPOSURE_OFFSET 4
/* V_TIMING internal */
#define IMX219_REG_FRM_LENGTH_A CCI_REG16(0x0160)
@@ -409,24 +410,14 @@ static void imx219_get_binning(struct v4l2_subdev_state *state, u8 *bin_h,
u32 hbin = crop->width / format->width;
u32 vbin = crop->height / format->height;
- *bin_h = IMX219_BINNING_NONE;
- *bin_v = IMX219_BINNING_NONE;
-
- /*
- * Use analog binning only if both dimensions are binned, as it crops
- * the other dimension.
- */
if (hbin == 2 && vbin == 2) {
*bin_h = IMX219_BINNING_X2_ANALOG;
*bin_v = IMX219_BINNING_X2_ANALOG;
-
- return;
+ } else {
+ *bin_h = IMX219_BINNING_NONE;
+ *bin_v = IMX219_BINNING_NONE;
}
- if (hbin == 2)
- *bin_h = IMX219_BINNING_X2;
- if (vbin == 2)
- *bin_v = IMX219_BINNING_X2;
}
static inline u32 imx219_get_rate_factor(struct v4l2_subdev_state *state)
@@ -460,13 +451,17 @@ static int imx219_set_ctrl(struct v4l2_ctrl *ctrl)
int exposure_max, exposure_def;
/* Update max exposure while meeting expected vblanking */
- exposure_max = format->height + ctrl->val - 4;
+ exposure_max = format->height + ctrl->val - IMX219_EXPOSURE_OFFSET;
exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ?
- exposure_max : IMX219_EXPOSURE_DEFAULT;
- __v4l2_ctrl_modify_range(imx219->exposure,
- imx219->exposure->minimum,
- exposure_max, imx219->exposure->step,
- exposure_def);
+ exposure_max : IMX219_EXPOSURE_DEFAULT;
+ ret = __v4l2_ctrl_modify_range(imx219->exposure,
+ imx219->exposure->minimum,
+ exposure_max,
+ imx219->exposure->step,
+ exposure_def);
+ if (ret)
+ return ret;
+
}
/*
@@ -585,9 +580,9 @@ static int imx219_init_controls(struct imx219 *imx219)
IMX219_LLP_MIN - mode->width,
IMX219_LLP_MAX - mode->width, 1,
IMX219_LLP_MIN - mode->width);
- exposure_max = mode->fll_def - 4;
+ exposure_max = mode->fll_def - IMX219_EXPOSURE_OFFSET;
exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ?
- exposure_max : IMX219_EXPOSURE_DEFAULT;
+ exposure_max : IMX219_EXPOSURE_DEFAULT;
imx219->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
V4L2_CID_EXPOSURE,
IMX219_EXPOSURE_MIN, exposure_max,
@@ -856,8 +851,9 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd,
const struct imx219_mode *mode;
struct v4l2_mbus_framefmt *format;
struct v4l2_rect *crop;
- u8 bin_h, bin_v;
+ u8 bin_h, bin_v, binning;
u32 prev_line_len;
+ int ret;
format = v4l2_subdev_state_get_format(state, 0);
prev_line_len = format->width + imx219->hblank->val;
@@ -877,9 +873,12 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd,
bin_h = min(IMX219_PIXEL_ARRAY_WIDTH / format->width, 2U);
bin_v = min(IMX219_PIXEL_ARRAY_HEIGHT / format->height, 2U);
+ /* Ensure bin_h and bin_v are same to avoid 1:2 or 2:1 stretching */
+ binning = min(bin_h, bin_v);
+
crop = v4l2_subdev_state_get_crop(state, 0);
- crop->width = format->width * bin_h;
- crop->height = format->height * bin_v;
+ crop->width = format->width * binning;
+ crop->height = format->height * binning;
crop->left = (IMX219_NATIVE_WIDTH - crop->width) / 2;
crop->top = (IMX219_NATIVE_HEIGHT - crop->height) / 2;
@@ -890,19 +889,28 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd,
int pixel_rate;
/* Update limits and set FPS to default */
- __v4l2_ctrl_modify_range(imx219->vblank, IMX219_VBLANK_MIN,
- IMX219_FLL_MAX - mode->height, 1,
+ ret = __v4l2_ctrl_modify_range(imx219->vblank, IMX219_VBLANK_MIN,
+ IMX219_FLL_MAX - mode->height, 1,
+ mode->fll_def - mode->height);
+ if (ret)
+ return ret;
+
+ ret = __v4l2_ctrl_s_ctrl(imx219->vblank,
mode->fll_def - mode->height);
- __v4l2_ctrl_s_ctrl(imx219->vblank,
- mode->fll_def - mode->height);
+ if (ret)
+ return ret;
+
/* Update max exposure while meeting expected vblanking */
- exposure_max = mode->fll_def - 4;
+ exposure_max = mode->fll_def - IMX219_EXPOSURE_OFFSET;
exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ?
- exposure_max : IMX219_EXPOSURE_DEFAULT;
- __v4l2_ctrl_modify_range(imx219->exposure,
- imx219->exposure->minimum,
- exposure_max, imx219->exposure->step,
- exposure_def);
+ exposure_max : IMX219_EXPOSURE_DEFAULT;
+ ret = __v4l2_ctrl_modify_range(imx219->exposure,
+ imx219->exposure->minimum,
+ exposure_max,
+ imx219->exposure->step,
+ exposure_def);
+ if (ret)
+ return ret;
/*
* With analog binning the default minimum line length of 3448
@@ -913,9 +921,12 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd,
imx219_get_binning(state, &bin_h, &bin_v);
llp_min = (bin_h & bin_v) == IMX219_BINNING_X2_ANALOG ?
IMX219_BINNED_LLP_MIN : IMX219_LLP_MIN;
- __v4l2_ctrl_modify_range(imx219->hblank, llp_min - mode->width,
- IMX219_LLP_MAX - mode->width, 1,
- llp_min - mode->width);
+ ret = __v4l2_ctrl_modify_range(imx219->hblank,
+ llp_min - mode->width,
+ IMX219_LLP_MAX - mode->width, 1,
+ llp_min - mode->width);
+ if (ret)
+ return ret;
/*
* Retain PPL setting from previous mode so that the
* line time does not change on a mode change.
@@ -924,13 +935,17 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd,
* mode width subtracted.
*/
hblank = prev_line_len - mode->width;
- __v4l2_ctrl_s_ctrl(imx219->hblank, hblank);
+ ret = __v4l2_ctrl_s_ctrl(imx219->hblank, hblank);
+ if (ret)
+ return ret;
/* Scale the pixel rate based on the mode specific factor */
pixel_rate = imx219_get_pixel_rate(imx219) *
imx219_get_rate_factor(state);
- __v4l2_ctrl_modify_range(imx219->pixel_rate, pixel_rate,
- pixel_rate, 1, pixel_rate);
+ ret = __v4l2_ctrl_modify_range(imx219->pixel_rate, pixel_rate,
+ pixel_rate, 1, pixel_rate);
+ if (ret)
+ return ret;
}
return 0;
@@ -979,9 +994,7 @@ static int imx219_init_state(struct v4l2_subdev *sd,
},
};
- imx219_set_pad_format(sd, state, &fmt);
-
- return 0;
+ return imx219_set_pad_format(sd, state, &fmt);
}
static const struct v4l2_subdev_video_ops imx219_video_ops = {
generated by cgit (git 2.34.1) at 2025-12-04 22:42:06 +0000