drivers/lcd: add stride support for LCD driver

support LCD stride for GET_AREA and PUT_AREA operation Signed-off-by: rongyichang <[email protected]>
casaroli · Nov 9, 2023 · bc43c41 · bc43c41
1 parent bb5b542
commit bc43c41
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Showing 2 changed files with 11 additions and 4 deletions.
diff --git a/drivers/lcd/lcd_dev.c b/drivers/lcd/lcd_dev.c
@@ -118,8 +118,11 @@ static int lcddev_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
         FAR struct lcddev_area_s *lcd_area =
             (FAR struct lcddev_area_s *)arg;
         size_t cols = lcd_area->col_end - lcd_area->col_start + 1;
-        size_t row_size = cols * (priv->planeinfo.bpp > 1 ?
-                                    priv->planeinfo.bpp >> 3 : 1);
+        size_t pixel_size = priv->planeinfo.bpp > 1 ?
+                            priv->planeinfo.bpp >> 3 : 1;
+        size_t row_size = lcd_area->stride > 0 ?
+                          lcd_area->stride * pixel_size :
+                          cols * pixel_size;
 
         if (priv->planeinfo.getarea)
           {
@@ -158,8 +161,11 @@ static int lcddev_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
         FAR const struct lcddev_area_s *lcd_area =
             (FAR const struct lcddev_area_s *)arg;
         size_t cols = lcd_area->col_end - lcd_area->col_start + 1;
-        size_t row_size = cols * (priv->planeinfo.bpp > 1 ?
-                                    priv->planeinfo.bpp >> 3 : 1);
+        size_t pixel_size = priv->planeinfo.bpp > 1 ?
+                            priv->planeinfo.bpp >> 3 : 1;
+        size_t row_size = lcd_area->stride > 0 ?
+                          lcd_area->stride * pixel_size :
+                          cols * pixel_size;
 
         if (priv->planeinfo.putarea)
           {

diff --git a/include/nuttx/lcd/lcd_dev.h b/include/nuttx/lcd/lcd_dev.h
@@ -87,6 +87,7 @@ struct lcddev_area_s
 {
   fb_coord_t row_start, row_end;
   fb_coord_t col_start, col_end;
+  fb_coord_t stride;
   FAR uint8_t *data;
 };