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report i2c-dev bus numbers rather than i2c-adapter numbers,

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which may be different.


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2097 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Mark D. Studebaker committed 2003-11-27 23:53:10 +00:00
1 parent 7d16642a33
commit 5bfcb08e18
1 file changed
+47 -7
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prog/dump/i2cbusses.c
+47 -7
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@@ -33,8 +33,8 @@ void print_i2c_busses()
{
FILE *fptr;
char s[100];
struct dirent *de;
DIR *dir;
struct dirent *de, *dde, *ddde;
DIR *dir, *ddir, *dddir;
FILE *f;
char *border;
char dev[NAME_MAX], fstype[NAME_MAX], sysfs[NAME_MAX], n[NAME_MAX];
@@ -70,19 +70,57 @@ void print_i2c_busses()
if (! foundsysfs) {
goto done;
}
strcat(sysfs, "/class/i2c-adapter");
dir = opendir(sysfs);
if (! dir)
/* Bus numbers in i2c-adapter don't necessarily match those in
i2c-dev and what we really care about are the i2c-dev numbers.
Unfortunately the names are harder to get in i2c-dev */
strcat(sysfs, "/class/i2c-dev");
if(!(dir = opendir(sysfs)))
goto done;
/* go through the busses */
while ((de = readdir(dir)) != NULL) {
if (!strcmp(de->d_name, "."))
continue;
if (!strcmp(de->d_name, ".."))
continue;
/* this seems to work for ISA */
sprintf(n, "%s/%s/device/name", sysfs, de->d_name);
f = fopen(n, "r");
if(f == NULL) {
/* non-ISA is much harder */
sprintf(n, "%s/%s/driver", sysfs, de->d_name);
if(!(ddir = opendir(n)))
continue;
while ((dde = readdir(ddir)) != NULL) {
if (!strcmp(dde->d_name, "."))
continue;
if (!strcmp(dde->d_name, ".."))
continue;
/* hope it's a link to a PCI device */
if(index(dde->d_name, ':')) {
sprintf(n, "%s/%s/driver/%s",
sysfs, de->d_name, dde->d_name);
if(!(dddir = opendir(n)))
continue;
while ((ddde = readdir(dddir)) != NULL) {
if (!strcmp(ddde->d_name, "."))
continue;
if (!strcmp(ddde->d_name, ".."))
continue;
if ((!strncmp(ddde->d_name, "i2c-", 4))) {
sprintf(n, "%s/%s/driver/%s/%s/name",
sysfs, de->d_name, dde->d_name, ddde->d_name);
if((f = fopen(n, "r")))
goto found;
}
}
}
}
}
if ((f = fopen(n, "r")) != NULL) {
found:
if (f != NULL) {
char x[120];
fgets(x, 120, f);
@@ -107,5 +145,7 @@ void print_i2c_busses()
done:
if(count == 0)
fprintf(stderr,"Error: No I2C busses found!\n");
fprintf(stderr,"Error: No I2C busses found!\n"
"Be sure you have done 'modprobe i2c-dev'\n"
"and also modprobed your i2c bus drivers\n");
}