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 CONFIG_SYS_POST_I2C_ADDRS
30 * The test is considered as passed if all the devices and
31 * only the devices in the list are found.
32 * #else [ ! CONFIG_SYS_POST_I2C_ADDRS ]
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
)
46 #ifndef CONFIG_SYS_POST_I2C_ADDRS
47 /* Start at address 1, address 0 is the general call address */
48 for (i
= 1; i
< 128; i
++)
49 if (i2c_probe (i
) == 0)
52 /* No devices found */
57 const unsigned char i2c_addr_list
[] = CONFIG_SYS_POST_I2C_ADDRS
;
59 /* Start at address 1, address 0 is the general call address */
60 for (i
= 1; i
< 128; i
++) {
61 if (i2c_probe(i
) != 0)
64 for (j
= 0; j
< sizeof(i2c_addr_list
); ++j
) {
65 if (i
== i2c_addr_list
[j
]) {
66 i2c_addr_list
[j
] = 0xff;
71 if (j
== sizeof(i2c_addr_list
)) {
73 post_log("I2C: addr %02x not expected\n", i
);
77 for (i
= 0; i
< sizeof(i2c_addr_list
); ++i
) {
78 if (i2c_addr_list
[i
] == 0xff)
80 post_log("I2C: addr %02x did not respond\n", i2c_addr_list
[i
]);
88 #endif /* CONFIG_POST & CONFIG_SYS_POST_I2C */