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author | wdenk <wdenk> | 2002-09-24 11:14:13 (GMT) |
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committer | wdenk <wdenk> | 2002-09-24 11:14:13 (GMT) |
commit | 07c04875868e53551f1827606db85d3603c88047 (patch) | |
tree | 0a235babdfd4267fbfed8cc0654bd877ef205313 /post/i2c.c | |
parent | 3d818266d7fbec49ec6a39ba05da6f5dc9eca611 (diff) | |
download | u-boot-07c04875868e53551f1827606db85d3603c88047.tar.xz |
Initial revision
Diffstat (limited to 'post/i2c.c')
-rw-r--r-- | post/i2c.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/post/i2c.c b/post/i2c.c new file mode 100644 index 0000000..2e38986 --- /dev/null +++ b/post/i2c.c @@ -0,0 +1,55 @@ +/* + * (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. + * If any I2C device is found, the test is considered as passed, + * otherwise failed. + */ + +#include <post.h> +#include <i2c.h> + +#if CONFIG_POST & CFG_POST_I2C + +int i2c_post_test (int flags) +{ + unsigned int i; + unsigned int chips = 0; + + for (i = 0; i < 128; i++) { + if (i2c_probe (i) == 0) + chips++; + } + + return chips > 0 ? 0 : -1; +} + +#endif /* CONFIG_POST & CFG_POST_I2C */ +#endif /* CONFIG_POST */ |