--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/lunadrv/lcdout.c	Thu May 07 02:19:51 2020 +0000
@@ -0,0 +1,106 @@
+/*
+ * Generic LCD output operations are implemented here.  All of the basic
+ * LCD controller registers needed for these operations are the same
+ * between ILI9225, ILI9225G and ST7775R controllers.
+ */
+
+#include <sys/types.h>
+#include "types.h"
+#include "luna.h"
+
+set_lcd_addr_region(xstart, xend, ystart, yend)
+{
+	/* set window area */
+	LCD_REG_WR(0x36, xend);
+	LCD_REG_WR(0x37, xstart);
+	LCD_REG_WR(0x38, yend);
+	LCD_REG_WR(0x39, ystart);
+	/* set current write address */
+	LCD_REG_WR(0x20, xstart);
+	LCD_REG_WR(0x21, ystart);
+	/* set up for GRAM write */
+	LCD_IR = 0x22;
+}
+
+void
+cmd_fill(argbulk)
+	char *argbulk;
+{
+	char *argv[2];
+	u_long pixval;
+	unsigned n;
+
+	if (parse_args(argbulk, 1, 1, argv, 0) < 0)
+		return;
+	if (parse_hexarg(argv[0], 4, &pixval) < 0) {
+		printf("ERROR: arg must be a valid 16-bit hex value\n");
+		return;
+	}
+	set_lcd_addr_region(0, 175, 0, 219);
+	for (n = 0; n < 176 * 220; n++)
+		LCD_DR = pixval;
+}
+
+void
+cmd_rect(argbulk)
+	char *argbulk;
+{
+	char *argv[6];
+	u_long pixval;
+	int xstart, xend, ystart, yend;
+	int npix;
+
+	if (parse_args(argbulk, 5, 5, argv, 0) < 0)
+		return;
+	xstart = atoi(argv[0]);
+	if (xstart < 0 || xstart > 175) {
+range_err:	printf("ERROR: coordinate arg out of range\n");
+		return;
+	}
+	xend = atoi(argv[1]);
+	if (xend < 0 || xend > 175)
+		goto range_err;
+	ystart = atoi(argv[2]);
+	if (ystart < 0 || ystart > 219)
+		goto range_err;
+	yend = atoi(argv[3]);
+	if (yend < 0 || yend > 219)
+		goto range_err;
+	if (xend < xstart || yend < ystart) {
+		printf("ERROR: negative range\n");
+		return;
+	}
+	if (parse_hexarg(argv[4], 4, &pixval) < 0) {
+		printf("ERROR: pixel arg must be a valid 16-bit hex value\n");
+		return;
+	}
+	set_lcd_addr_region(xstart, xend, ystart, yend);
+	npix = (xend + 1 - xstart) * (yend + 1 - ystart);
+	while (npix--)
+		LCD_DR = pixval;
+}
+
+void
+cmd_mem2lcd(argbulk)
+	char *argbulk;
+{
+	char *argv[2];
+	u_long addr;
+	const u16 *rdmem;
+	unsigned n;
+
+	if (parse_args(argbulk, 1, 1, argv, 0) < 0)
+		return;
+	if (parse_hexarg(argv[0], 8, &addr) < 0) {
+		printf("ERROR: argument must be a valid 32-bit hex address\n");
+		return;
+	}
+	if (addr & 1) {
+		printf("ERROR: unaligned address\n");
+		return;
+	}
+	rdmem = (const u16 *) addr;
+	set_lcd_addr_region(0, 175, 0, 219);
+	for (n = 0; n < 176 * 220; n++)
+		LCD_DR = *rdmem++;
+}