3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 * For verifying the I2C bus, a full I2C bus scanning is performed.
29 * #ifdef I2C_ADDR_LIST
30 * The test is considered as passed if all the devices and
31 * only the devices in the list are found.
32 * #else [ ! I2C_ADDR_LIST ]
33 * The test is considered as passed if any I2C device is found.
41 #if CONFIG_POST & CONFIG_SYS_POST_I2C
43 int i2c_post_test (int flags)
47 for (i = 0; i < 128; i++)
48 if (i2c_probe (i) == 0)
51 /* No devices found */
56 const unsigned char i2c_addr_list[] = I2C_ADDR_LIST;
58 for (i = 0; i < 128; i++) {
59 if (i2c_probe(i) != 0)
62 for (j = 0; j < sizeof(i2c_addr_list); ++j) {
63 if (i == i2c_addr_list[j]) {
64 i2c_addr_list[j] = 0xff;
69 if (j == sizeof(i2c_addr_list)) {
71 post_log("I2C: addr %02x not expected\n", i);
75 for (i = 0; i < sizeof(i2c_addr_list); ++i) {
76 if (i2c_addr_list[i] == 0xff)
78 post_log("I2C: addr %02x did not respond\n", i2c_addr_list[i]);
86 #endif /* CONFIG_POST & CONFIG_SYS_POST_I2C */