[people/ms/u-boot.git] / board / logicpd / zoom2 / debug_board.c

/*
 * Copyright (c) 2009 Wind River Systems, Inc.
 * Tom Rix <Tom.Rix@windriver.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */
#include <common.h>
#include <asm/arch/cpu.h>
#include <asm/io.h>
#include <asm/arch/mux.h>
#include <asm/gpio.h>

#define DEBUG_BOARD_CONNECTED		1
#define DEBUG_BOARD_NOT_CONNECTED	0

static int debug_board_connected = DEBUG_BOARD_CONNECTED;

static void zoom2_debug_board_detect (void)
{
	int val = 0;

	if (!gpio_request(158, "")) {
		/*
		 * GPIO to query for debug board
		 * 158 db board query
		 */
		gpio_direction_input(158);
		val = gpio_get_value(158);
	}

	if (!val)
		debug_board_connected = DEBUG_BOARD_NOT_CONNECTED;
}

int zoom2_debug_board_connected (void)
{
	static int first_time = 1;

	if (first_time) {
		zoom2_debug_board_detect ();
		first_time = 0;
	}
	return debug_board_connected;
}
Commit	Line	Data
de193e8e TR	1	/*
	2	* Copyright (c) 2009 Wind River Systems, Inc.
	3	* Tom Rix <Tom.Rix@windriver.com>
	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
de193e8e TR	6	*/
	7	#include <common.h>
	8	#include <asm/arch/cpu.h>
	9	#include <asm/io.h>
	10	#include <asm/arch/mux.h>
84c3b631	11	#include <asm/gpio.h>
de193e8e TR	12
	13	#define DEBUG_BOARD_CONNECTED 1
	14	#define DEBUG_BOARD_NOT_CONNECTED 0
	15
	16	static int debug_board_connected = DEBUG_BOARD_CONNECTED;
	17
	18	static void zoom2_debug_board_detect (void)
	19	{
	20	int val = 0;
	21
84c3b631	22	if (!gpio_request(158, "")) {
de193e8e TR	23	/*
	24	* GPIO to query for debug board
	25	* 158 db board query
	26	*/
84c3b631 SP	27	gpio_direction_input(158);
84c3b631 SP	28	val = gpio_get_value(158);
de193e8e TR	29	}
	30
	31	if (!val)
	32	debug_board_connected = DEBUG_BOARD_NOT_CONNECTED;
	33	}
	34
	35	int zoom2_debug_board_connected (void)
	36	{
	37	static int first_time = 1;
	38
	39	if (first_time) {
	40	zoom2_debug_board_detect ();
	41	first_time = 0;
	42	}
	43	return debug_board_connected;
	44	}