drivers: video: mipi_csi2rx: Fix type range related to pixel rate

Fix some type range related to pixel rate which can cause overflow.

Signed-off-by: Phi Bang Nguyen <[email protected]>

Author: ngphibang

drivers/video/video_mcux_mipi_csi2rx.c

@@ -37,7 +37,7 @@ struct mipi_csi2rx_data {
 };
 
 struct mipi_csi2rx_tHsSettleEscClk_config {
-	uint64_t pixel_rate;
+	uint32_t pixel_rate;
 	uint8_t tHsSettle_EscClk;
 };
 
@@ -202,21 +202,24 @@ static int mipi_csi2rx_get_frmival(const struct device *dev, enum video_endpoint
 	return video_get_frmival(config->sensor_dev, ep, frmival);
 }
 
-static uint64_t mipi_csi2rx_cal_frame_size(const struct video_format *fmt)
+static uint32_t mipi_csi2rx_cal_frame_size(const struct video_format *fmt)
 {
 	return fmt->height * fmt->width * video_bits_per_pixel(fmt->pixelformat);
 }
 
-static uint64_t mipi_csi2rx_estimate_pixel_rate(const struct video_frmival *cur_fmival,
+static uint32_t mipi_csi2rx_estimate_pixel_rate(const struct video_frmival *cur_fmival,
 						const struct video_frmival *fie_frmival,
 						const struct video_format *cur_format,
 						const struct video_format *fie_format,
-						uint64_t cur_pixel_rate, uint8_t laneNum)
+						uint32_t cur_pixel_rate, uint8_t laneNum)
 {
-	return mipi_csi2rx_cal_frame_size(cur_format) * fie_frmival->denominator *
-	       cur_fmival->numerator * cur_pixel_rate /
-	       (mipi_csi2rx_cal_frame_size(fie_format) * fie_frmival->numerator *
-		cur_fmival->denominator);
+	uint64_t numerator = mipi_csi2rx_cal_frame_size(cur_format) * fie_frmival->denominator *
+			     cur_fmival->numerator * cur_pixel_rate;
+
+	uint64_t denominator = mipi_csi2rx_cal_frame_size(fie_format) * fie_frmival->numerator *
+			       cur_fmival->denominator;
+
+	return numerator / denominator;
 }
 
 static int mipi_csi2rx_enum_frmival(const struct device *dev, enum video_endpoint_id ep,
@@ -225,7 +228,7 @@ static int mipi_csi2rx_enum_frmival(const struct device *dev, enum video_endpoin
 	const struct mipi_csi2rx_config *config = dev->config;
 	struct mipi_csi2rx_data *drv_data = dev->data;
 	int ret;
-	uint64_t est_pixel_rate;
+	uint32_t est_pixel_rate;
 	struct video_frmival cur_frmival;
 	struct video_format cur_fmt;
 	struct video_control sensor_rate = {.id = VIDEO_CID_PIXEL_RATE, .val64 = -1};