video: Provide an API to access video parameters

Create a basic API to provide access to video parameters such as screen
size, and to position the cursor on the screen. Also add a prototype
for video_display_bitmap() which was missing.

Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Anatolij Gustschin <agust@denx.de>

diff --git a/common/cmd_bmp.c b/common/cmd_bmp.c
index b8809e3bf5409bd154f2ced0a193392794ac32df..5a52edde31dff8c4083baa449302ffab1b906cb4 100644 (file)
--- a/common/cmd_bmp.c
+++ b/common/cmd_bmp.c
@@ -31,6 +31,7 @@
 #include <command.h>
 #include <asm/byteorder.h>
 #include <malloc.h>
+#include <video.h>
 
 static int bmp_info (ulong addr);
 
@@ -238,9 +239,7 @@ int bmp_display(ulong addr, int x, int y)
 #if defined(CONFIG_LCD)
        ret = lcd_display_bitmap((ulong)bmp, x, y);
 #elif defined(CONFIG_VIDEO)
-       extern int video_display_bitmap (ulong, int, int);
-
-       ret = video_display_bitmap ((unsigned long)bmp, x, y);
+       ret = video_display_bitmap((unsigned long)bmp, x, y);
 #else
 # error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
 #endif

diff --git a/include/video.h b/include/video.h
index 9519ceaf98bf1da91404d1aa21df15b1dd667f9e..f7e27f8477b0e5d3c4acae8175b080db88a78eca 100644 (file)
--- a/include/video.h
+++ b/include/video.h
@@ -15,4 +15,52 @@ int  video_init      (void *videobase);
 void   video_putc      (const char c);
 void   video_puts      (const char *s);
 
+/**
+ * Display a BMP format bitmap on the screen
+ *
+ * @param bmp_image    Address of BMP image
+ * @param x            X position to draw image
+ * @param y            Y position to draw image
+ */
+int video_display_bitmap(ulong bmp_image, int x, int y);
+
+/**
+ * Get the width of the screen in pixels
+ *
+ * @return width of screen in pixels
+ */
+int video_get_pixel_width(void);
+
+/**
+ * Get the height of the screen in pixels
+ *
+ * @return height of screen in pixels
+ */
+int video_get_pixel_height(void);
+
+/**
+ * Get the number of text lines/rows on the screen
+ *
+ * @return number of rows
+ */
+int video_get_screen_rows(void);
+
+/**
+ * Get the number of text columns on the screen
+ *
+ * @return number of columns
+ */
+int video_get_screen_columns(void);
+
+/**
+ * Set the position of the text cursor
+ *
+ * @param col  Column to place cursor (0 = left side)
+ * @param row  Row to place cursor (0 = top line)
+ */
+void video_position_cursor(unsigned col, unsigned row);
+
+/* Clear the display */
+void video_clear(void);
+
 #endif