video: Update the copy framebuffer when writing bitmaps

Adjust the bitmap code to sync to the copy framebuffer when done.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Tested-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/drivers/video/video_bmp.c b/drivers/video/video_bmp.c
index 7d7f37b..5a4d12c 100644 (file)
--- a/drivers/video/video_bmp.c
+++ b/drivers/video/video_bmp.c
@@ -192,7 +192,7 @@ int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y,
        struct video_priv *priv = dev_get_uclass_priv(dev);
        ushort *cmap_base = NULL;
        int i, j;
-       uchar *fb;
+       uchar *start, *fb;
        struct bmp_image *bmp = map_sysmem(bmp_image, 0);
        uchar *bmap;
        ushort padded_width;
@@ -201,6 +201,7 @@ int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y,
        unsigned colours, bpix, bmp_bpix;
        struct bmp_color_table_entry *palette;
        int hdr_size;
+       int ret;
 
        if (!bmp || !(bmp->header.signature[0] == 'B' &&
            bmp->header.signature[1] == 'M')) {
@@ -261,8 +262,11 @@ int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y,
                height = priv->ysize - y;
 
        bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
-       fb = (uchar *)(priv->fb +
-               (y + height - 1) * priv->line_length + x * bpix / 8);
+       start = (uchar *)(priv->fb +
+               (y + height) * priv->line_length + x * bpix / 8);
+
+       /* Move back to the final line to be drawn */
+       fb = start - priv->line_length;
 
        switch (bmp_bpix) {
        case 1:
@@ -369,6 +373,12 @@ int video_bmp_display(struct udevice *dev, ulong bmp_image, int x, int y,
                break;
        };
 
+       /* Find the position of the top left of the image in the framebuffer */
+       fb = (uchar *)(priv->fb + y * priv->line_length + x * bpix / 8);
+       ret = video_sync_copy(dev, start, fb);
+       if (ret)
+               return log_ret(ret);
+
        video_sync(dev, false);
 
        return 0;