api: export LCD device to external apps

This patch exports LCD info-query and bitmap-rendering functions to
external apps.

This patch is tested on a Seaboard.  Because the LCD driver is not yet
upstreamed, the test was done in a local downstream repo.

Signed-off-by: Che-Liang Chiou <clchiou@chromium.org>

1 files changed, 74 insertions, 0 deletions

diff --git a/api/api_display.c b/api/api_display.c
new file mode 100644
index 0000000..6439170
--- /dev/null
+++ b/api/api_display.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <api_public.h>
+#include <lcd.h>
+#include <video_font.h> /* Get font width and height */
+
+/* lcd.h needs BMP_LOGO_HEIGHT to calculate CONSOLE_ROWS */
+#if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
+#include <bmp_logo.h>
+#endif
+
+/* TODO(clchiou): add support of video device */
+
+int display_get_info(int type, struct display_info *di)
+{
+	if (!di)
+		return API_EINVAL;
+
+	switch (type) {
+	default:
+		debug("%s: unsupport display device type: %d\n",
+				__FILE__, type);
+		return API_ENODEV;
+#ifdef CONFIG_LCD
+	case DISPLAY_TYPE_LCD:
+		di->pixel_width  = panel_info.vl_col;
+		di->pixel_height = panel_info.vl_row;
+		di->screen_rows = CONSOLE_ROWS;
+		di->screen_cols = CONSOLE_COLS;
+		break;
+#endif
+	}
+
+	di->type = type;
+	return 0;
+}
+
+int display_draw_bitmap(ulong bitmap, int x, int y)
+{
+	if (!bitmap)
+		return API_EINVAL;
+#ifdef CONFIG_LCD
+	return lcd_display_bitmap(bitmap, x, y);
+#else
+	return API_ENODEV;
+#endif
+}
+
+void display_clear(void)
+{
+#ifdef CONFIG_LCD
+	lcd_clear();
+#endif
+}