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Commit 4e2cf0e2 authored by Eva Rachel Retuya's avatar Eva Rachel Retuya Committed by Jonathan Cameron
Browse files

tools: iio: iio_generic_buffer: add -A to force-enable all channels 



If attribute/s is/are already enabled (by default or via scripts or
manual interaction), issuing -a will fail to enable the channels thereby
one has to manually disable the said attribute/s before proceeding with
auto-enabling.

Add a command-line option -A to force-activate all channels regardless
of their current state.

Suggested-by: default avatarAlison Schofield <amsfield22@gmail.com>
Signed-off-by: default avatarEva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent b440f1d9

tools/iio/iio_generic_buffer.c

+12 −5
Original line number Diff line number Diff line
@@ -247,6 +247,7 @@ void print_usage(void) 
	fprintf(stderr, "Usage: generic_buffer [options]...\n"

		"Capture, convert and output data from IIO device buffer\n"

		"  -a         Auto-activate all available channels\n"

		"  -A         Force-activate ALL channels\n"

		"  -c <n>     Do n conversions\n"

		"  -e         Disable wait for event (new data)\n"

		"  -g         Use trigger-less mode\n"
@@ -347,16 +348,22 @@ int main(int argc, char **argv) 
	int noevents = 0;

	int notrigger = 0;

	char *dummy;

	int force = 0;



	struct iio_channel_info *channels = NULL;



	register_cleanup();



	while ((c = getopt_long(argc, argv, "ac:egl:n:N:t:T:w:?", longopts, NULL)) != -1) {

	while ((c = getopt_long(argc, argv, "aAc:egl:n:N:t:T:w:?", longopts,

				NULL)) != -1) {

		switch (c) {

		case 'a':

			autochannels = AUTOCHANNELS_ENABLED;

			break;

		case 'A':

			autochannels = AUTOCHANNELS_ENABLED;

			force = 1;

			break;	

		case 'c':

			errno = 0;

			num_loops = strtoul(optarg, &dummy, 10);
@@ -519,15 +526,15 @@ int main(int argc, char **argv) 
			"diag %s\n", dev_dir_name);

		goto error;

	}

	if (num_channels && autochannels == AUTOCHANNELS_ENABLED) {

	if ((num_channels && autochannels == AUTOCHANNELS_ENABLED) && !force) {

		fprintf(stderr, "Auto-channels selected but some channels "

			"are already activated in sysfs\n");

		fprintf(stderr, "Proceeding without activating any channels\n");

	}



	if (!num_channels && autochannels == AUTOCHANNELS_ENABLED) {

		fprintf(stderr,

			"No channels are enabled, enabling all channels\n");

	if ((!num_channels && autochannels == AUTOCHANNELS_ENABLED) ||

	    ((autochannels == AUTOCHANNELS_ENABLED) && force)) {

		fprintf(stderr, "Enabling all channels\n");



		ret = enable_disable_all_channels(dev_dir_name, 1);

		if (ret) {