V4L/DVB (12517): mt9t031: improve rectangle placement in invalid S_CROP

1. soc-camera always requests a valid rectangle, when calling .s_fmt(), no need
to check and adjust
2. in .s_crop(), if the rectangle exceeds sensor limits, push it to the
respective border instead of centering
3. take into account left and top borders when checking

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/mt9t031.c b/drivers/media/video/mt9t031.c
index dc3eb65..125973b 100644 (file)
--- a/drivers/media/video/mt9t031.c
+++ b/drivers/media/video/mt9t031.c
@@ -240,15 +240,6 @@ static int mt9t031_set_params(struct soc_camera_device *icd,
        const u16 hblank = MT9T031_HORIZONTAL_BLANK,
                vblank = MT9T031_VERTICAL_BLANK;
 
-       /* Make sure we don't exceed sensor limits */
-       if (rect->left + rect->width > icd->rect_max.width)
-               rect->left = (icd->rect_max.width - rect->width) / 2 +
-                       icd->rect_max.left;
-
-       if (rect->top + rect->height > icd->rect_max.height)
-               rect->top = (icd->rect_max.height - rect->height) / 2 +
-                       icd->rect_max.top;
-
        width = rect->width * xskip;
        height = rect->height * yskip;
        left = rect->left * xskip;
@@ -336,6 +327,15 @@ static int mt9t031_set_crop(struct soc_camera_device *icd,
        struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
        struct mt9t031 *mt9t031 = to_mt9t031(client);
 
+       /* Make sure we don't exceed sensor limits */
+       if (rect->left + rect->width > icd->rect_max.left + icd->rect_max.width)
+               rect->left = icd->rect_max.width + icd->rect_max.left -
+                       rect->width;
+
+       if (rect->top + rect->height > icd->rect_max.height + icd->rect_max.top)
+               rect->top = icd->rect_max.height + icd->rect_max.top -
+                       rect->height;
+
        /* CROP - no change in scaling, or in limits */
        return mt9t031_set_params(icd, rect, mt9t031->xskip, mt9t031->yskip);
 }