#include "control.h"
#include "calibration.h"
+#include <errno.h>
+
/*
* This table maps syfs entries in scan_elements directories to sensor types,
* and will also be used to determine other sysfs names as well as the iio
#define PANEL_FRONT 4
#define PANEL_BACK 5
+/* Buffer default length */
+#define BUFFER_LENGTH 16
+
/* We equate sensor handles to indices in these tables */
struct sensor_t sensor_desc[MAX_SENSORS]; /* Android-level descriptors */
int num_channels;
char suffix[MAX_NAME_SIZE + 8];
int calib_bias;
+ int buffer_length;
if (sensor_count == MAX_SENSORS) {
ALOGE("Too many sensors!\n");
sysfs_write_int(sysfs_path, calib_bias);
}
+ /* Change buffer length according to the property or use default value */
+ if (mode == MODE_TRIGGER) {
+ if (sensor_get_prop(s, "buffer_length", &buffer_length)) {
+ buffer_length = BUFFER_LENGTH;
+ }
+
+ sprintf(sysfs_path, BUFFER_LENGTH_PATH, dev_num);
+
+ if (sysfs_write_int(sysfs_path, buffer_length) <= 0) {
+ ALOGE("Failed to set buffer length on dev%d", dev_num);
+ }
+ }
+
/* Read name attribute, if available */
sprintf(sysfs_path, NAME_PATH, dev_num);
sysfs_read_str(sysfs_path, sensor[s].internal_name, MAX_NAME_SIZE);
}
+static void swap_sensors (int s1, int s2)
+{
+ struct sensor_t temp_sensor_desc;
+ sensor_info_t temp_sensor;
+
+ /* S1 -> temp */
+ memcpy(&temp_sensor, &sensor[s1], sizeof(sensor_info_t));
+ memcpy(&temp_sensor_desc, &sensor_desc[s1], sizeof(struct sensor_t));
+
+ /* S2 -> S1 */
+ memcpy(&sensor[s1], &sensor[s2], sizeof(sensor_info_t));
+ memcpy(&sensor_desc[s1], &sensor_desc[s2], sizeof(struct sensor_t));
+
+ /* temp -> S2 */
+ memcpy(&sensor[s2], &temp_sensor, sizeof(sensor_info_t));
+ memcpy(&sensor_desc[s2], &temp_sensor_desc, sizeof(struct sensor_t));
+
+ /* Fix-up sensor id mapping, which is stale */
+ sensor_desc[s1].handle = s1;
+ sensor_desc[s2].handle = s2;
+
+ /* Fix up name and vendor buffer pointers, which are potentially stale pointers */
+ sensor_desc[s1].name = sensor_get_name(s1);
+ sensor_desc[s1].vendor = sensor_get_vendor(s1);
+ sensor_desc[s2].name = sensor_get_name(s2);
+ sensor_desc[s2].vendor = sensor_get_vendor(s2);
+}
+
+
+static void reorder_sensors (void)
+{
+ /* Some sensors may be marked as secondary - these need to be listed after other sensors of the same type */
+ int s1, s2;
+
+ for (s1=0; s1<sensor_count-1; s1++)
+ if (sensor[s1].quirks & QUIRK_SECONDARY) {
+ /* Search for subsequent sensors of same type */
+ for (s2 = s1+1; s2<sensor_count; s2++)
+ if (sensor[s2].type == sensor[s1].type && !(sensor[s2].quirks & QUIRK_SECONDARY)) {
+ ALOGI("Sensor S%d has higher priority than S%d, swapping\n", s2, s1);
+ swap_sensors(s1, s2);
+ break;
+ }
+ }
+}
+
+
void enumerate_sensors (void)
{
/*
int dev_num;
unsigned int i;
int trig_found;
+ int s;
for (dev_num=0; dev_num<MAX_DEVICES; dev_num++) {
trig_found = 0;
build_sensor_report_maps(dev_num);
}
+ /* Make sure secondary sensors appear after primary ones */
+ reorder_sensors();
+
ALOGI("Discovered %d sensors\n", sensor_count);
/* Set up default - as well as custom - trigger names */
setup_trigger_names();
+ ALOGI("Discovered %d sensors\n", sensor_count);
+
virtual_sensors_check();
+
+ for (s=0; s<sensor_count; s++) {
+ ALOGI("S%d: %s\n", s, sensor[s].friendly_name);
+ }
}