sdk-hwV1.3/lichee/brandy-2.0/u-boot-2018/sprite/sprite_led.c

/*
 * (C) Copyright 2007-2013
 * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
 * Char <yanjianbo@allwinnertech.com>
 *
 * 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.
 */

#include <common.h>
#include <asm/arch/timer.h>
#include <sys_config.h>
#include <asm/arch/cpu.h>
#include <fdt_support.h>
#include <sys_config.h>
#include <asm-generic/gpio.h>
#include <sunxi_board.h>

struct timer_list TIMER0;
static int sprite_led_status;
static __u32 sprite_led_hd;

/*
************************************************************************************************************
*
*                                             function
*
*    函数名称：
*
*    参数列表：
*
*    返回值  ：
*
*    说明    ：
*
*
************************************************************************************************************
*/
static void sprite_timer_func(void *p)
{
	gpio_write_one_pin_value(sprite_led_hd, sprite_led_status,
				 "sprite_gpio0");
	sprite_led_status = (~sprite_led_status) & 0x01;

	//printf("sprite_time_func\n");
	del_timer(&TIMER0);
	add_timer(&TIMER0);
	return;
}

/*
************************************************************************************************************
*
*                                             function
*
*    函数名称：
*
*    参数列表：
*
*    返回值  ：
*
*    说明    ：
*
*
************************************************************************************************************
*/
int sprite_led_init(void)
{
	user_gpio_set_t gpio_init;
	int ret   = 0;
	int delay = 0;

	sprite_led_status = 1;

	//正常工作时，灯闪烁的时间
	ret = script_parser_fetch("/soc/card_boot", "sprite_work_delay",
				  (void *)&delay, 0);

	if (!delay) {
		delay = 500;
	}

	pr_msg("try sprite_led_gpio config\n");
	memset(&gpio_init, 0, sizeof(user_gpio_set_t));

	//配置输出gpio口
	ret = fdt_get_one_gpio(FDT_PATH_CARD_BOOT, "sprite_gpio0", &gpio_init);
	if (!ret) {
		if (gpio_init.port) {
			sprite_led_hd = sunxi_gpio_request(&gpio_init, 1);
			if (!sprite_led_hd) {
				pr_err("reuqest gpio for led failed\n");
				return 1;
			}

			TIMER0.data     = (unsigned long)&TIMER0;
			TIMER0.expires  = delay;
			TIMER0.function = sprite_timer_func;
			//init_timer(&TIMER0);
			add_timer(&TIMER0);

			tick_printf("sprite_led_gpio start\n");
			return 0;
		}
	}
	return 0;
}

/*
************************************************************************************************************
*
*                                             function
*
*    函数名称：
*
*    参数列表：
*
*    返回值  ：
*
*    说明    ：
*
*
************************************************************************************************************
*/
int sprite_led_exit(int status)
{
	//int ret;
	int delay;
	int nodeoffset;

	del_timer(&TIMER0);

	//出错的时候，led的闪烁加快
	if (status < 0) {
		delay      = 0;
		nodeoffset = fdt_path_offset(working_fdt, FDT_PATH_CARD_BOOT);
		if (nodeoffset > 0) {
			fdt_getprop_u32(working_fdt, nodeoffset,
					"sprite_err_delay", (uint32_t *)&delay);
		}
		if (!delay) {
			delay = 100;
		}
		del_timer(&TIMER0);
		TIMER0.data     = (unsigned long)&TIMER0;
		TIMER0.expires  = delay;
		TIMER0.function = sprite_timer_func;
		//init_timer(&TIMER0);
		add_timer(&TIMER0);
	}

	return 0;
}