Commit b6d5be57 authored by Karol Wrona's avatar Karol Wrona Committed by Jonathan Cameron

staging: iio: Add notrigger mode for generic_buffer

Some IIO devices do not use the triggers. This patch makes trigger setting
conditional so generic_buffer can be used when triggers are disabled.
Signed-off-by: default avatarKarol Wrona <k.wrona@samsung.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 455f0049
......@@ -158,11 +158,12 @@ int main(int argc, char **argv)
char *buffer_access;
int scan_size;
int noevents = 0;
int notrigger = 0;
char *dummy;
struct iio_channel_info *channels;
while ((c = getopt(argc, argv, "l:w:c:et:n:")) != -1) {
while ((c = getopt(argc, argv, "l:w:c:et:n:g")) != -1) {
switch (c) {
case 'n':
device_name = optarg;
......@@ -183,6 +184,9 @@ int main(int argc, char **argv)
case 'l':
buf_len = strtoul(optarg, &dummy, 10);
break;
case 'g':
notrigger = 1;
break;
case '?':
return -1;
}
......@@ -201,11 +205,13 @@ int main(int argc, char **argv)
printf("iio device number being used is %d\n", dev_num);
asprintf(&dev_dir_name, "%siio:device%d", iio_dir, dev_num);
if (!notrigger) {
if (trigger_name == NULL) {
/*
* Build the trigger name. If it is device associated its
* name is <device_name>_dev[n] where n matches the device
* number found above
* Build the trigger name. If it is device associated
* its name is <device_name>_dev[n] where n matches
* the device number found above.
*/
ret = asprintf(&trigger_name,
"%s-dev%d", device_name, dev_num);
......@@ -223,6 +229,8 @@ int main(int argc, char **argv)
goto error_free_triggername;
}
printf("iio trigger number being used is %d\n", trig_num);
} else
printf("trigger-less mode selected\n");
/*
* Parse the files in scan_elements to identify what channels are
......@@ -246,8 +254,11 @@ int main(int argc, char **argv)
ret = -ENOMEM;
goto error_free_triggername;
}
if (!notrigger) {
printf("%s %s\n", dev_dir_name, trigger_name);
/* Set the device trigger to be the data ready trigger found above */
/* Set the device trigger to be the data ready trigger found
* above */
ret = write_sysfs_string_and_verify("trigger/current_trigger",
dev_dir_name,
trigger_name);
......@@ -255,6 +266,7 @@ int main(int argc, char **argv)
printf("Failed to write current_trigger file\n");
goto error_free_buf_dir_name;
}
}
/* Setup ring buffer parameters */
ret = write_sysfs_int("length", buf_dir_name, buf_len);
......@@ -323,6 +335,7 @@ int main(int argc, char **argv)
if (ret < 0)
goto error_close_buffer_access;
if (!notrigger)
/* Disconnect the trigger - just write a dummy name. */
write_sysfs_string("trigger/current_trigger",
dev_dir_name, "NULL");
......
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