video: Allow temporary colour changes
It is sometimes necessary to highlight some text in a different colour.
Add an easy way to do this and then restore the original console colours.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/video_console.h b/include/video_console.h
index 3db9a7e..81d4c4d 100644
--- a/include/video_console.h
+++ b/include/video_console.h
@@ -72,6 +72,17 @@
};
/**
+ * struct vidconsole_colour - Holds colour information
+ *
+ * @colour_fg: Foreground colour (pixel value)
+ * @colour_bg: Background colour (pixel value)
+ */
+struct vidconsole_colour {
+ u32 colour_fg;
+ u32 colour_bg;
+};
+
+/**
* struct vidconsole_ops - Video console operations
*
* These operations work on either an absolute console position (measured
@@ -205,6 +216,25 @@
int vidconsole_select_font(struct udevice *dev, const char *name, uint size);
/**
+ * vidconsole_push_colour() - Temporarily change the font colour
+ *
+ * @dev: Device to adjust
+ * @fg: Foreground colour to select
+ * @bg: Background colour to select
+ * @old: Place to store the current colour, so it can be restored
+ */
+void vidconsole_push_colour(struct udevice *dev, enum colour_idx fg,
+ enum colour_idx bg, struct vidconsole_colour *old);
+
+/**
+ * vidconsole_pop_colour() - Restore the original colour
+ *
+ * @dev: Device to adjust
+ * @old: Old colour to be restored
+ */
+void vidconsole_pop_colour(struct udevice *dev, struct vidconsole_colour *old);
+
+/**
* vidconsole_putc_xy() - write a single character to a position
*
* @dev: Device to write to