95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
|
/*
|
||
|
|
* (C) Copyright 2002
|
||
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
||
|
|
*
|
||
|
|
* 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
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <common.h>
|
||
|
|
|
||
|
|
#ifdef CONFIG_POST
|
||
|
|
|
||
|
|
/*
|
||
|
|
* I2C test
|
||
|
|
*
|
||
|
|
* For verifying the I2C bus, a full I2C bus scanning is performed.
|
||
|
|
*
|
||
|
|
* #ifdef I2C_ADDR_LIST
|
||
|
|
* The test is considered as passed if all the devices and
|
||
|
|
* only the devices in the list are found.
|
||
|
|
* #else [ ! I2C_ADDR_LIST ]
|
||
|
|
* The test is considered as passed if any I2C device is found.
|
||
|
|
* #endif
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <post.h>
|
||
|
|
#include <i2c.h>
|
||
|
|
|
||
|
|
#if CONFIG_POST & CFG_POST_I2C
|
||
|
|
|
||
|
|
int i2c_post_test (int flags)
|
||
|
|
{
|
||
|
|
unsigned int i;
|
||
|
|
unsigned int good = 0;
|
||
|
|
#ifdef I2C_ADDR_LIST
|
||
|
|
unsigned int bad = 0;
|
||
|
|
int j;
|
||
|
|
unsigned char i2c_addr_list[] = I2C_ADDR_LIST;
|
||
|
|
unsigned char i2c_miss_list[] = I2C_ADDR_LIST;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
for (i = 0; i < 128; i++) {
|
||
|
|
if (i2c_probe (i) == 0) {
|
||
|
|
#ifndef I2C_ADDR_LIST
|
||
|
|
good++;
|
||
|
|
#else /* I2C_ADDR_LIST */
|
||
|
|
for (j=0; j<sizeof(i2c_addr_list); ++j) {
|
||
|
|
if (i == i2c_addr_list[j]) {
|
||
|
|
good++;
|
||
|
|
i2c_miss_list[j] = 0xFF;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (j == sizeof(i2c_addr_list)) {
|
||
|
|
bad++;
|
||
|
|
post_log ("I2C: addr %02X not expected\n",
|
||
|
|
i);
|
||
|
|
}
|
||
|
|
#endif /* I2C_ADDR_LIST */
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifndef I2C_ADDR_LIST
|
||
|
|
return good > 0 ? 0 : -1;
|
||
|
|
#else /* I2C_ADDR_LIST */
|
||
|
|
if (good != sizeof(i2c_addr_list)) {
|
||
|
|
for (j=0; j<sizeof(i2c_miss_list); ++j) {
|
||
|
|
if (i2c_miss_list[j] != 0xFF) {
|
||
|
|
post_log ("I2C: addr %02X did not respond\n",
|
||
|
|
i2c_miss_list[j]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return ((good == sizeof(i2c_addr_list)) && (bad == 0)) ? 0 : -1;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* CONFIG_POST & CFG_POST_I2C */
|
||
|
|
#endif /* CONFIG_POST */
|