cmd_tb5200.c

u-boot-1.1.6 源码包

/*
 * (C) Copyright 2005 - 2006
 * Martin Krause, TQ-Systems GmbH, [e-mail].
 *
 * 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
 */

/*
 * TB5200 specific functions
 */
/*#define DEBUG*/

#include <common.h>
#include <command.h>

#if (CONFIG_COMMANDS & CFG_CMD_BSP)
#if defined (CONFIG_TB5200)

#define SM501_PANEL_DISPLAY_CONTROL	0x00080000UL

static void led_init(void)
{
	struct mpc5xxx_gpt_0_7 *gpt = (struct mpc5xxx_gpt_0_7 *)MPC5XXX_GPT;

	/* configure timer 4 for simple GPIO output */
	gpt->gpt4.emsr |=  0x00000024;
}

int cmd_led(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	struct mpc5xxx_gpt_0_7 *gpt = (struct mpc5xxx_gpt_0_7 *)MPC5XXX_GPT;

	led_init();

	if (strcmp (argv[1], "on") == 0) {
		debug ("switch status LED on\n");
		gpt->gpt4.emsr |=  (1 << 4);
	} else if (strcmp (argv[1], "off") == 0) {
		debug ("switch status LED off\n");
		gpt->gpt4.emsr &=  ~(1 << 4);
	} else {
		printf ("Usage:\nled on/off\n");
		return 1;
	}

	return 0;
}

static void sm501_backlight (unsigned int state)
{
	if (state == 1) {
		*(vu_long *)(SM501_MMIO_BASE+SM501_PANEL_DISPLAY_CONTROL) |=
			(1 << 26) | (1 << 27);
	} else if (state == 0)
		*(vu_long *)(SM501_MMIO_BASE+SM501_PANEL_DISPLAY_CONTROL) &=
			~((1 << 26) | (1 << 27));
}

int cmd_backlight(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	if (strcmp (argv[1], "on") == 0) {
		debug ("switch backlight on\n");
		sm501_backlight (1);
	} else if (strcmp (argv[1], "off") == 0) {
		debug ("switch backlight off\n");
		sm501_backlight (0);
	} else {
		printf ("Usage:\nbacklight on/off\n");
		return 1;
	}

	return 0;
}

U_BOOT_CMD(
	led ,	2,	1,	cmd_led,
	"led     - switch status LED on or off\n",
	"on/off\n"
);

U_BOOT_CMD(
	backlight ,	2,	1,	cmd_backlight,
	"backlight - switch backlight on or off\n",
	"on/off\n"
	);

#endif /* CONFIG_STK52XX */
#endif /* CFG_CMD_BSP */