video: Add commands to list and change fonts

Add a new 'font' command which allows the fonts to be listed as well as
selecting a different font and size.

Allow the test to run on sandbox, where multiple font/size combinations
are supported, as well as sandbox_flattree, where they are not.

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

2 files changed, 82 insertions, 0 deletions

diff --git a/cmd/Makefile b/cmd/Makefile
index ac9226f..ca9ed10 100644
--- a/cmd/Makefile
+++ b/cmd/Makefile
@@ -74,6 +74,7 @@ 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_FLASH) += flash.o
 obj-$(CONFIG_CMD_FPGA) += fpga.o
 obj-$(CONFIG_CMD_FPGAD) += fpgad.o
diff --git a/cmd/font.c b/cmd/font.c
new file mode 100644
index 0000000..3e522f3
--- /dev/null
+++ b/cmd/font.c
@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * video commands
+ *
+ * Copyright 2022 Google LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <command.h>
+#include <dm.h>
+#include <video.h>
+#include <video_console.h>
+
+static int do_font_list(struct cmd_tbl *cmdtp, int flag, int argc,
+			char *const argv[])
+{
+	vidconsole_list_fonts();
+
+	return 0;
+}
+
+static int do_font_select(struct cmd_tbl *cmdtp, int flag, int argc,
+			  char *const argv[])
+{
+	struct udevice *dev;
+	const char *name;
+	uint size = 0;
+	int ret;
+
+	if (argc < 2)
+		return CMD_RET_USAGE;
+
+	if (uclass_first_device_err(UCLASS_VIDEO_CONSOLE, &dev))
+		return CMD_RET_FAILURE;
+	name = argv[1];
+	if (argc == 3)
+		size = dectoul(argv[2], NULL);
+	ret = vidconsole_select_font(dev, name, size);
+	if (ret) {
+		printf("Failed (error %d)\n", ret);
+		return CMD_RET_FAILURE;
+	}
+
+	return 0;
+}
+static int do_font_size(struct cmd_tbl *cmdtp, int flag, int argc,
+			char *const argv[])
+{
+	struct udevice *dev;
+	uint size;
+	int ret;
+
+	if (argc != 2)
+		return CMD_RET_USAGE;
+
+	if (uclass_first_device_err(UCLASS_VIDEO_CONSOLE, &dev))
+		return CMD_RET_FAILURE;
+
+	size = dectoul(argv[1], NULL);
+	ret = vidconsole_select_font(dev, NULL, size);
+	if (ret) {
+		printf("Failed (error %d)\n", ret);
+		return CMD_RET_FAILURE;
+	}
+
+	return 0;
+}
+
+
+#ifdef CONFIG_SYS_LONGHELP
+static char font_help_text[] =
+	"list       - list available fonts\n"
+	"font select <name> [<size>] - select font to use\n"
+	"font size <size> - select font size to";
+#endif
+
+U_BOOT_CMD_WITH_SUBCMDS(font, "Fonts", font_help_text,
+	U_BOOT_SUBCMD_MKENT(list, 1, 1, do_font_list),
+	U_BOOT_SUBCMD_MKENT(select, 3, 1, do_font_select),
+	U_BOOT_SUBCMD_MKENT(size, 2, 1, do_font_size));