video console: allow font size configuration at runtime

Allow font size configuration at runtime for console_simple.c
driver. This needed for unit testing different fonts.

Configuring is done by `font` command, also used for font
selection in true type console.

Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

cmd/Kconfig

@@ -2226,6 +2226,14 @@ config CMD_VIDCONSOLE
 	  The name 'lcdputs' is a bit of a misnomer, but so named because the
 	  video device is often an LCD.
 
+config CMD_SELECT_FONT
+	bool "select font size"
+	depends on VIDEO
+	default n
+	help
+	  Enabling this will provide 'font' command.
+	  Allows font selection at runtime.
+
 endmenu
 
 source "cmd/ti/Kconfig"

cmd/Makefile

@@ -78,7 +78,7 @@ obj-$(CONFIG_CMD_EXT2) += ext2.o
 obj-$(CONFIG_CMD_FAT) += fat.o
 obj-$(CONFIG_CMD_FDT) += fdt.o
 obj-$(CONFIG_CMD_SQUASHFS) += sqfs.o
-obj-$(CONFIG_CONSOLE_TRUETYPE) += font.o
+obj-$(CONFIG_CMD_SELECT_FONT) += font.o
 obj-$(CONFIG_CMD_FLASH) += flash.o
 obj-$(CONFIG_CMD_FPGA) += fpga.o
 obj-$(CONFIG_CMD_FPGAD) += fpgad.o

drivers/video/Kconfig

@@ -165,6 +165,7 @@ config CONSOLE_ROTATION
 
 config CONSOLE_TRUETYPE
 	bool "Support a console that uses TrueType fonts"
+	select CMD_SELECT_FONT
 	help
 	  TrueTrype fonts can provide outline-drawing capability rather than
 	  needing to provide a bitmap for each font and size that is needed.

drivers/video/console_core.c

@@ -180,3 +180,33 @@ int console_probe(struct udevice *dev)
 {
 	return console_set_font(dev, fonts);
 }
+
+const char *console_simple_get_font_size(struct udevice *dev, uint *sizep)
+{
+	struct console_simple_priv *priv = dev_get_priv(dev);
+
+	*sizep = priv->fontdata->width;
+
+	return priv->fontdata->name;
+}
+
+int console_simple_get_font(struct udevice *dev, int seq, struct vidfont_info *info)
+{
+	info->name = fonts[seq].name;
+
+	return 0;
+}
+
+int console_simple_select_font(struct udevice *dev, const char *name, uint size)
+{
+	struct video_fontdata *font;
+
+	for (font = fonts; font->name; font++) {
+		if (!strcmp(name, font->name)) {
+			console_set_font(dev, font);
+			return 0;
+		}
+	};
+	printf("no such font: %s, make sure it's name has <width>x<height> format\n", name);
+	return -ENOENT;
+}

drivers/video/console_normal.c

@@ -101,6 +101,9 @@ struct vidconsole_ops console_ops = {
 	.putc_xy	= console_putc_xy,
 	.move_rows	= console_move_rows,
 	.set_row	= console_set_row,
+	.get_font_size	= console_simple_get_font_size,
+	.get_font	= console_simple_get_font,
+	.select_font	= console_simple_select_font,
 };
 
 U_BOOT_DRIVER(vidconsole_normal) = {

drivers/video/console_rotate.c

@@ -262,18 +262,27 @@ struct vidconsole_ops console_ops_1 = {
 	.putc_xy	= console_putc_xy_1,
 	.move_rows	= console_move_rows_1,
 	.set_row	= console_set_row_1,
+	.get_font_size	= console_simple_get_font_size,
+	.get_font	= console_simple_get_font,
+	.select_font	= console_simple_select_font,
 };
 
 struct vidconsole_ops console_ops_2 = {
 	.putc_xy	= console_putc_xy_2,
 	.move_rows	= console_move_rows_2,
 	.set_row	= console_set_row_2,
+	.get_font_size	= console_simple_get_font_size,
+	.get_font	= console_simple_get_font,
+	.select_font	= console_simple_select_font,
 };
 
 struct vidconsole_ops console_ops_3 = {
 	.putc_xy	= console_putc_xy_3,
 	.move_rows	= console_move_rows_3,
 	.set_row	= console_set_row_3,
+	.get_font_size	= console_simple_get_font_size,
+	.get_font	= console_simple_get_font,
+	.select_font	= console_simple_select_font,
 };
 
 U_BOOT_DRIVER(vidconsole_1) = {

drivers/video/vidconsole_internal.h

@@ -100,3 +100,21 @@ int fill_char_horizontally(uchar *pfont, void **line, struct video_priv *vid_pri
  * @returns 0, if success, or else error code.
  */
 int console_probe(struct udevice *dev);
+
+/**
+ * Internal function to be used in as ops.
+ * See details in video_console.h get_font_size function
+ **/
+const char *console_simple_get_font_size(struct udevice *dev, uint *sizep);
+
+/**
+ * Internal function to be used in as ops.
+ * See details in video_console.h get_font function
+ **/
+int console_simple_get_font(struct udevice *dev, int seq, struct vidfont_info *info);
+
+/**
+ * Internal function to be used in as ops.
+ * See details in video_console.h select_font function
+ **/
+int console_simple_select_font(struct udevice *dev, const char *name, uint size);