mirror of
https://github.com/smaeul/u-boot.git
synced 2025-11-03 21:48:15 +00:00
9b107e6138
If CONFIG_SYS_POST_I2C_ADDRS is not defined and CONFIG_SYS_POST_I2C is activated, i2c_probe() is not called in the for statement, because missing curly bracket. Signed-off-by: Heiko Schocher <hs@denx.de>
112 lines
2.8 KiB
C
112 lines
2.8 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
|
|
*/
|
|
|
|
/*
|
|
* I2C test
|
|
*
|
|
* For verifying the I2C bus, a full I2C bus scanning is performed.
|
|
*
|
|
* #ifdef CONFIG_SYS_POST_I2C_ADDRS
|
|
* The test is considered as passed if all the devices and only the devices
|
|
* in the list are found.
|
|
* #ifdef CONFIG_SYS_POST_I2C_IGNORES
|
|
* Ignore devices listed in CONFIG_SYS_POST_I2C_IGNORES. These devices
|
|
* are optional or not vital to board functionality.
|
|
* #endif
|
|
* #else [ ! CONFIG_SYS_POST_I2C_ADDRS ]
|
|
* The test is considered as passed if any I2C device is found.
|
|
* #endif
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <post.h>
|
|
#include <i2c.h>
|
|
|
|
#if CONFIG_POST & CONFIG_SYS_POST_I2C
|
|
|
|
static int i2c_ignore_device(unsigned int chip)
|
|
{
|
|
#ifdef CONFIG_SYS_POST_I2C_IGNORES
|
|
const unsigned char i2c_ignore_list[] = CONFIG_SYS_POST_I2C_IGNORES;
|
|
int i;
|
|
|
|
for (i = 0; i < sizeof(i2c_ignore_list); i++)
|
|
if (i2c_ignore_list[i] == chip)
|
|
return 1;
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
int i2c_post_test (int flags)
|
|
{
|
|
unsigned int i;
|
|
#ifndef CONFIG_SYS_POST_I2C_ADDRS
|
|
/* Start at address 1, address 0 is the general call address */
|
|
for (i = 1; i < 128; i++) {
|
|
if (i2c_ignore_device(i))
|
|
continue;
|
|
if (i2c_probe (i) == 0)
|
|
return 0;
|
|
}
|
|
|
|
/* No devices found */
|
|
return -1;
|
|
#else
|
|
unsigned int ret = 0;
|
|
int j;
|
|
unsigned char i2c_addr_list[] = CONFIG_SYS_POST_I2C_ADDRS;
|
|
|
|
/* Start at address 1, address 0 is the general call address */
|
|
for (i = 1; i < 128; i++) {
|
|
if (i2c_ignore_device(i))
|
|
continue;
|
|
if (i2c_probe(i) != 0)
|
|
continue;
|
|
|
|
for (j = 0; j < sizeof(i2c_addr_list); ++j) {
|
|
if (i == i2c_addr_list[j]) {
|
|
i2c_addr_list[j] = 0xff;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (j == sizeof(i2c_addr_list)) {
|
|
ret = -1;
|
|
post_log("I2C: addr %02x not expected\n", i);
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < sizeof(i2c_addr_list); ++i) {
|
|
if (i2c_addr_list[i] == 0xff)
|
|
continue;
|
|
post_log("I2C: addr %02x did not respond\n", i2c_addr_list[i]);
|
|
ret = -1;
|
|
}
|
|
|
|
return ret;
|
|
#endif
|
|
}
|
|
|
|
#endif /* CONFIG_POST & CONFIG_SYS_POST_I2C */
|