/*
 * This module implements suspend and resume commands for entering
 * and exiting ILI9225G sleep mode.  These commands are expected
 * to work the same on both HaoRan and Formike LCDs, but the
 * current measurement resistor that allows one to see the actual
 * power supply current drawn by the LCD is present only on lunalcd2
 * boards.
 */

#include "types.h"
#include "luna.h"

void
cmd_suspend()
{
	LCD_REG_WR(0x0007, 0);			/* display off */
	wait_ARM_cycles(DELAY_1MS * 50);
	LCD_REG_WR(0x0010, 1);			/* suspend mode */
}

void
cmd_resume()
{
	LCD_REG_WR(0x0010, 0);			/* out of suspend */
	wait_ARM_cycles(DELAY_1MS * 50);
	LCD_REG_WR(0x0007, 0x1017);		/* display on */
}

/*
 * If we wish to run sans-UI firmware on an LCD-equipped board,
 * we would like to put the ILI9225G controller into its lowest
 * power mode, without doing anything else to it.  The following
 * reset-suspend command prototypes this functionality.
 */

void
cmd_reset_suspend()
{
	/* reset pulse */
	CNTL_RST_REG |= EXT_RESET;
	wait_ARM_cycles(DELAY_1MS * 10);
	CNTL_RST_REG &= ~EXT_RESET;
	/* datasheet says it needs 50 ms */
	wait_ARM_cycles(DELAY_1MS * 50);
	/* and straight into suspend mode */
	LCD_REG_WR(0x0010, 1);
}