media: i2c: imx258: Set pixel_rate range to the same as the value

With a read only control there is limited point in advertising
a minimum and maximum for the control, so change to set the
value, min, and max all to the selected pixel rate.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

Author: 6by9

drivers/media/i2c/imx258.c

@@ -1237,7 +1237,8 @@ static int imx258_set_pad_format(struct v4l2_subdev *sd,
 
 		link_freq = imx258->link_freq_menu_items[mode->link_freq_index];
 		pixel_rate = link_freq_to_pixel_rate(link_freq, imx258->nlanes);
-		__v4l2_ctrl_s_ctrl_int64(imx258->pixel_rate, pixel_rate);
+		__v4l2_ctrl_modify_range(imx258->pixel_rate, pixel_rate,
+					 pixel_rate, 1, pixel_rate);
 		/* Update limits and set FPS to default */
 		vblank_def = imx258->cur_mode->vts_def -
 			     imx258->cur_mode->height;
@@ -1546,8 +1547,7 @@ static int imx258_init_controls(struct imx258 *imx258)
 	struct v4l2_ctrl_handler *ctrl_hdlr;
 	s64 vblank_def;
 	s64 vblank_min;
-	s64 pixel_rate_min;
-	s64 pixel_rate_max;
+	s64 pixel_rate;
 	int ret;
 
 	ctrl_hdlr = &imx258->ctrl_handler;
@@ -1567,17 +1567,13 @@ static int imx258_init_controls(struct imx258 *imx258)
 	if (imx258->link_freq)
 		imx258->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
 
-	pixel_rate_max =
-		link_freq_to_pixel_rate(imx258->link_freq_menu_items[0],
-					imx258->nlanes);
-	pixel_rate_min =
-		link_freq_to_pixel_rate(imx258->link_freq_menu_items[1],
-					imx258->nlanes);
+	pixel_rate = link_freq_to_pixel_rate(imx258->link_freq_menu_items[0],
+					     imx258->nlanes);
 	/* By default, PIXEL_RATE is read only */
 	imx258->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops,
 				V4L2_CID_PIXEL_RATE,
-				pixel_rate_min, pixel_rate_max,
-				1, pixel_rate_max);
+				pixel_rate, pixel_rate,
+				1, pixel_rate);
 
 
 	vblank_def = imx258->cur_mode->vts_def - imx258->cur_mode->height;