lcd: Provide an API to access LCD parameters

Create a basic API to provide access to lcd parameters such as screen
size, and to position the cursor on the screen.

This matches up with the video API for the same purpose. Unfortunately
they are not yet combined.

Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>

common/lcd.c

@@ -885,5 +885,31 @@ static void *lcd_logo(void)
 #endif /* CONFIG_LCD_LOGO && !CONFIG_LCD_INFO_BELOW_LOGO */
 }
 
+void lcd_position_cursor(unsigned col, unsigned row)
+{
+	console_col = min(col, CONSOLE_COLS - 1);
+	console_row = min(row, CONSOLE_ROWS - 1);
+}
+
+int lcd_get_pixel_width(void)
+{
+	return panel_info.vl_col;
+}
+
+int lcd_get_pixel_height(void)
+{
+	return panel_info.vl_row;
+}
+
+int lcd_get_screen_rows(void)
+{
+	return CONSOLE_ROWS;
+}
+
+int lcd_get_screen_columns(void)
+{
+	return CONSOLE_COLS;
+}
+
 /************************************************************************/
 /************************************************************************/

include/lcd.h

@@ -294,6 +294,42 @@ void	lcd_printf	(const char *fmt, ...);
 void	lcd_clear(void);
 int	lcd_display_bitmap(ulong bmp_image, int x, int y);
 
+/**
+ * Get the width of the LCD in pixels
+ *
+ * @return width of LCD in pixels
+ */
+int lcd_get_pixel_width(void);
+
+/**
+ * Get the height of the LCD in pixels
+ *
+ * @return height of LCD in pixels
+ */
+int lcd_get_pixel_height(void);
+
+/**
+ * Get the number of text lines/rows on the LCD
+ *
+ * @return number of rows
+ */
+int lcd_get_screen_rows(void);
+
+/**
+ * Get the number of text columns on the LCD
+ *
+ * @return number of columns
+ */
+int lcd_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 lcd_position_cursor(unsigned col, unsigned row);
+
 /* Allow boards to customize the information displayed */
 void lcd_show_board_info(void);