kernel: drivers: vga_text_buffer: Refactor vga_text_buffer_color to be a

compile time constant.

1 files changed, 13 insertions, 0 deletions

diff --git a/kernel/include/drivers/vga_text_buffer.h b/kernel/include/drivers/vga_text_buffer.h
index 7bb88d6..e09bf2e 100644
--- a/kernel/include/drivers/vga_text_buffer.h
+++ b/kernel/include/drivers/vga_text_buffer.h
@@ -50,6 +50,19 @@ typedef enum {
   VGA_COLOR_WHITE = 15,
 } vga_color;
 
+/*
+ * bg   fg
+ * 1110 0101
+ */
+#define vga_entry_color(fg, bg) (bg << 4 | fg)
+
+/*
+ * color     character
+ * 1110 0101 1001 1010
+ */
+#define vga_entry(character, color)                                           \
+  ((uint16_t) color << 8 | (uint16_t) character)
+
 bool vga_text_buffer_is_initialized(void);
 
 void vga_text_buffer_initialize(void);