1 files changed, 0 insertions, 238 deletions
diff --git a/drivers/staging/iio/Documentation/lis3l02dqbuffersimple.c b/drivers/staging/iio/Documentation/lis3l02dqbuffersimple.c
deleted file mode 100644
index 3a58028..0000000
--- a/drivers/staging/iio/Documentation/lis3l02dqbuffersimple.c
+++ /dev/null
@@ -1,238 +0,0 @@
-/* Industrialio ring buffer with a lis3l02dq accelerometer
- *
- * Copyright (c) 2008 Jonathan Cameron
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- * This program is primarily intended as an example application.
- */
-
-#include <dirent.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <errno.h>
-#include <sys/stat.h>
-#include <sys/dir.h>
-#include <linux/types.h>
-#include "iio_utils.h"
-
-const char *device_name = "lis3l02dq";
-const char *trigger_name_base = "lis3l02dq-dev";
-const int num_vals = 3;
-const int scan_ts = 1;
-const int buf_len = 128;
-const int num_loops = 10;
-
-/*
- * Could get this from ring bps, but only after starting the ring
- * which is a bit late for it to be useful.
- *
- * Todo: replace with much more generic version based on scan_elements
- * directory.
- */
-int size_from_scanmode(int num_vals, int timestamp)
-{
-	if (num_vals && timestamp)
-		return 16;
-	else if (timestamp)
-		return 8;
-	else
-		return num_vals*2;
-}
-
-int main(int argc, char **argv)
-{
-	int ret;
-	int i, j, k, toread;
-	FILE *fp_ev;
-	int fp;
-
-	char *trigger_name, *dev_dir_name, *buf_dir_name;
-	char *data;
-	size_t read_size;
-	struct iio_event_data dat;
-	int dev_num, trig_num;
-
-	char *buffer_access, *buffer_event;
-	const char *iio_dir = "/sys/bus/iio/devices/";
-	int scan_size;
-	float gain = 1;
-
-
-	/* Find out which iio device is the accelerometer. */
-	dev_num = find_type_by_name(device_name, "device");
-	if (dev_num < 0) {
-		printf("Failed to find the %s\n", device_name);
-		ret = -ENODEV;
-		goto error_ret;
-	}
-	printf("iio device number being used is %d\n", dev_num);
-	asprintf(&dev_dir_name, "%sdevice%d", iio_dir, dev_num);
-
-	/*
-	 * Build the trigger name.
-	 * In this case we want the lis3l02dq's data ready trigger
-	 * for this lis3l02dq. The naming is lis3l02dq_dev[n], where
-	 * n matches the device number found above.
-	 */
-	ret = asprintf(&trigger_name, "%s%d", trigger_name_base, dev_num);
-	if (ret < 0) {
-		ret = -ENOMEM;
-		goto error_free_dev_dir_name;
-	}
-
-	/*
-	 * Find the trigger by name.
-	 * This is techically unecessary here as we only need to
-	 * refer to the trigger by name and that name is already
-	 * known.
-	 */
-	trig_num = find_type_by_name(trigger_name, "trigger");
-	if (trig_num < 0) {
-		printf("Failed to find the %s\n", trigger_name);
-		ret = -ENODEV;
-		goto error_free_triggername;
-	}
-	printf("iio trigger number being used is %d\n", trig_num);
-
-	/*
-	 * Read in the scale value - in a more generic case, first
-	 * check for accel_scale, then the indivual channel scales
-	 */
-	ret = read_sysfs_float("accel_scale", dev_dir_name, &gain);
-	if (ret)
-		goto error_free_triggername;;
-
-	/*
-	 * Construct the directory name for the associated buffer.
-	 * As we know that the lis3l02dq has only one buffer this may
-	 * be built rather than found.
-	 */
-	ret = asprintf(&buf_dir_name, "%sdevice%d:buffer0", iio_dir, dev_num);
-	if (ret < 0) {
-		ret = -ENOMEM;
-		goto error_free_triggername;
-	}
-	/* Set the device trigger to be the data rdy trigger found above */
-	ret = write_sysfs_string_and_verify("trigger/current_trigger",
-					dev_dir_name,
-					trigger_name);
-	if (ret < 0) {
-		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);
-	if (ret < 0)
-		goto error_free_buf_dir_name;
-
-	/* Enable the buffer */
-	ret = write_sysfs_int("ring_enable", buf_dir_name, 1);
-	if (ret < 0)
-		goto error_free_buf_dir_name;
-
-	data = malloc(size_from_scanmode(num_vals, scan_ts)*buf_len);
-	if (!data) {
-		ret = -ENOMEM;
-		goto error_free_buf_dir_name;
-	}
-
-	ret = asprintf(&buffer_access,
-		       "/dev/device%d:buffer0:access0",
-		       dev_num);
-	if (ret < 0) {
-		ret = -ENOMEM;
-		goto error_free_data;
-	}
-
-	ret = asprintf(&buffer_event, "/dev/device%d:buffer0:event0", dev_num);
-	if (ret < 0) {
-		ret = -ENOMEM;
-		goto error_free_data;
-	}
-	/* Attempt to open non blocking the access dev */
-	fp = open(buffer_access, O_RDONLY | O_NONBLOCK);
-	if (fp == -1) { /*If it isn't there make the node */
-		printf("Failed to open %s\n", buffer_access);
-		ret = -errno;
-		goto error_free_buffer_event;
-	}
-	/* Attempt to open the event access dev (blocking this time) */
-	fp_ev = fopen(buffer_event, "rb");
-	if (fp_ev == NULL) {
-		printf("Failed to open %s\n", buffer_event);
-		ret = -errno;
-		goto error_close_buffer_access;
-	}
-
-	/* Wait for events 10 times */
-	for (j = 0; j < num_loops; j++) {
-		read_size = fread(&dat, 1, sizeof(struct iio_event_data),
-				  fp_ev);
-		switch (dat.id) {
-		case IIO_EVENT_CODE_RING_100_FULL:
-			toread = buf_len;
-			break;
-		case IIO_EVENT_CODE_RING_75_FULL:
-			toread = buf_len*3/4;
-			break;
-		case IIO_EVENT_CODE_RING_50_FULL:
-			toread = buf_len/2;
-			break;
-		default:
-			printf("Unexpecteded event code\n");
-			continue;
-		}
-		read_size = read(fp,
-				 data,
-				 toread*size_from_scanmode(num_vals, scan_ts));
-		if (read_size == -EAGAIN) {
-			printf("nothing available\n");
-			continue;
-		}
-		scan_size = size_from_scanmode(num_vals, scan_ts);
-		for (i = 0; i < read_size/scan_size; i++) {
-			for (k = 0; k < num_vals; k++) {
-				__s16 val = *(__s16 *)(&data[i*scan_size
-							     + (k)*2]);
-				printf("%05f ", (float)val*gain);
-			}
-			printf(" %lld\n",
-			       *(__s64 *)(&data[(i + 1)
-						*size_from_scanmode(num_vals,
-								    scan_ts)
-						- sizeof(__s64)]));
-		}
-	}
-
-	/* Stop the ring buffer */
-	ret = write_sysfs_int("ring_enable", buf_dir_name, 0);
-	if (ret < 0)
-		goto error_close_buffer_event;
-
-	/* Disconnect from the trigger - just write a dummy name.*/
-	write_sysfs_string("trigger/current_trigger",
-			dev_dir_name, "NULL");
-
-error_close_buffer_event:
-	fclose(fp_ev);
-error_close_buffer_access:
-	close(fp);
-error_free_data:
-	free(data);
-error_free_buffer_access:
-	free(buffer_access);
-error_free_buffer_event:
-	free(buffer_event);
-error_free_buf_dir_name:
-	free(buf_dir_name);
-error_free_triggername:
-	free(trigger_name);
-error_free_dev_dir_name:
-	free(dev_dir_name);
-error_ret:
-	return ret;
-}