+ if (sensor_info[s].power != 0.0 ||
+ !sensor_get_fl_prop(s, "power", &sensor_info[s].power))
+ return sensor_info[s].power;
+
+ return 0;
+}
+
+
+float sensor_get_illumincalib (int s)
+{
+ /* calibrating the ALS Sensor*/
+ if (sensor_info[s].illumincalib != 0.0 ||
+ !sensor_get_fl_prop(s, "illumincalib", &sensor_info[s].illumincalib)) {
+ return sensor_info[s].illumincalib;
+ }
+
+ return 0;
+}
+
+
+uint32_t sensor_get_quirks (int s)
+{
+ char quirks_buf[MAX_NAME_SIZE];
+
+ /* Read and decode quirks property on first reference */
+ if (!(sensor_info[s].quirks & QUIRK_ALREADY_DECODED)) {
+ quirks_buf[0] = '\0';
+ sensor_get_st_prop(s, "quirks", quirks_buf);
+
+ if (strstr(quirks_buf, "init-rate"))
+ sensor_info[s].quirks |= QUIRK_INITIAL_RATE;
+
+ if (strstr(quirks_buf, "continuous")) {
+ sensor_info[s].quirks |= QUIRK_CONTINUOUS_DRIVER;
+ }
+
+ if (strstr(quirks_buf, "terse") && !(sensor_info[s].quirks & QUIRK_CONTINUOUS_DRIVER))
+ sensor_info[s].quirks |= QUIRK_TERSE_DRIVER;
+
+ if (strstr(quirks_buf, "noisy"))
+ sensor_info[s].quirks |= QUIRK_NOISY;
+
+ sensor_info[s].quirks |= QUIRK_ALREADY_DECODED;
+ }
+
+ return sensor_info[s].quirks;
+}
+
+
+int sensor_get_order (int s, unsigned char map[MAX_CHANNELS])
+{
+ char buf[MAX_NAME_SIZE];
+ int i;
+ int count = sensor_catalog[sensor_info[s].catalog_index].num_channels;
+
+ if (sensor_get_st_prop(s, "order", buf))
+ return 0; /* No order property */
+
+ /* Assume ASCII characters, in the '0'..'9' range */
+
+ for (i=0; i<count; i++)
+ if (buf[i] - '0' >= count) {
+ ALOGE("Order index out of range for sensor %d\n", s);
+ return 0;
+ }
+
+ for (i=0; i<count; i++)
+ map[i] = buf[i] - '0';
+
+ return 1; /* OK to use modified ordering map */
+}
+
+char* sensor_get_string_type(int s)
+{
+ int catalog_index;
+ int sensor_type;
+
+ catalog_index = sensor_info[s].catalog_index;
+ sensor_type = sensor_catalog[catalog_index].type;
+
+ switch (sensor_type) {
+ case SENSOR_TYPE_ACCELEROMETER:
+ return SENSOR_STRING_TYPE_ACCELEROMETER;
+
+ case SENSOR_TYPE_MAGNETIC_FIELD:
+ return SENSOR_STRING_TYPE_MAGNETIC_FIELD;
+
+ case SENSOR_TYPE_ORIENTATION:
+ return SENSOR_STRING_TYPE_ORIENTATION;
+
+ case SENSOR_TYPE_GYROSCOPE:
+ return SENSOR_STRING_TYPE_GYROSCOPE;
+
+ case SENSOR_TYPE_GYROSCOPE_UNCALIBRATED:
+ return SENSOR_STRING_TYPE_GYROSCOPE_UNCALIBRATED;
+
+ case SENSOR_TYPE_LIGHT:
+ return SENSOR_STRING_TYPE_LIGHT;
+
+ case SENSOR_TYPE_AMBIENT_TEMPERATURE:
+ return SENSOR_STRING_TYPE_AMBIENT_TEMPERATURE;
+
+ case SENSOR_TYPE_TEMPERATURE:
+ return SENSOR_STRING_TYPE_TEMPERATURE;
+
+ case SENSOR_TYPE_PROXIMITY:
+ return SENSOR_STRING_TYPE_PROXIMITY;
+
+ case SENSOR_TYPE_PRESSURE:
+ return SENSOR_STRING_TYPE_PRESSURE;
+
+ case SENSOR_TYPE_RELATIVE_HUMIDITY:
+ return SENSOR_STRING_TYPE_RELATIVE_HUMIDITY;
+
+ default:
+ return "";
+ }
+}
+
+flag_t sensor_get_flags (int s)
+{
+ int catalog_index;
+ int sensor_type;
+
+ flag_t flags = 0x0;
+ catalog_index = sensor_info[s].catalog_index;
+ sensor_type = sensor_catalog[catalog_index].type;
+
+ switch (sensor_type) {
+ case SENSOR_TYPE_ACCELEROMETER:
+ case SENSOR_TYPE_MAGNETIC_FIELD:
+ case SENSOR_TYPE_ORIENTATION:
+ case SENSOR_TYPE_GYROSCOPE:
+ case SENSOR_TYPE_GYROSCOPE_UNCALIBRATED:
+ case SENSOR_TYPE_PRESSURE:
+ flags |= SENSOR_FLAG_CONTINUOUS_MODE;
+ break;
+
+ case SENSOR_TYPE_LIGHT:
+ case SENSOR_TYPE_AMBIENT_TEMPERATURE:
+ case SENSOR_TYPE_TEMPERATURE:
+ case SENSOR_TYPE_RELATIVE_HUMIDITY:
+ flags |= SENSOR_FLAG_ON_CHANGE_MODE;
+ break;
+
+
+ case SENSOR_TYPE_PROXIMITY:
+ flags |= SENSOR_FLAG_WAKE_UP;
+ flags |= SENSOR_FLAG_ON_CHANGE_MODE;
+ break;
+
+ default:
+ ALOGI("Unknown sensor");
+ }
+ return flags;
+}
+
+max_delay_t sensor_get_max_delay (int s)
+{
+ char avail_sysfs_path[PATH_MAX];
+ int dev_num = sensor_info[s].dev_num;
+ char freqs_buf[100];
+ char* cursor;
+ float min_supported_rate = 1000;
+ float sr;
+
+ /* continuous: maximum sampling period allowed in microseconds.
+ * on-change, one-shot, special : 0
+ */
+
+ if (sensor_desc[s].flags)
+ return 0;
+
+ sprintf(avail_sysfs_path, DEVICE_AVAIL_FREQ_PATH, dev_num);
+
+ if (sysfs_read_str(avail_sysfs_path, freqs_buf, sizeof(freqs_buf)) < 0)
+ return 0;
+
+ cursor = freqs_buf;
+ while (*cursor && cursor[0]) {
+
+ /* Decode a single value */
+ sr = strtod(cursor, NULL);
+
+ if (sr < min_supported_rate)
+ min_supported_rate = sr;
+
+ /* Skip digits */
+ while (cursor[0] && !isspace(cursor[0]))
+ cursor++;
+
+ /* Skip spaces */
+ while (cursor[0] && isspace(cursor[0]))
+ cursor++;
+ }
+
+ /* return 0 for wrong values */
+ if (min_supported_rate < 0.1)
+ return 0;
+
+ /* Return microseconds */
+ return (max_delay_t)(1000000.0 / min_supported_rate);
+}
+
+/* this value depends on the reporting mode:
+ *
+ * continuous: minimum sample period allowed in microseconds
+ * on-change : 0
+ * one-shot :-1
+ * special : 0, unless otherwise noted
+ */
+int32_t sensor_get_min_delay(int s)
+{
+ char avail_sysfs_path[PATH_MAX];
+ int dev_num = sensor_info[s].dev_num;
+ char freqs_buf[100];
+ char* cursor;
+ float max_supported_rate = 0;
+ float sr;
+ int catalog_index = sensor_info[s].catalog_index;
+ int sensor_type = sensor_catalog[catalog_index].type;
+
+
+ sprintf(avail_sysfs_path, DEVICE_AVAIL_FREQ_PATH, dev_num);
+
+ if (sysfs_read_str(avail_sysfs_path, freqs_buf, sizeof(freqs_buf)) < 0) {
+ /* If poll mode sensor */
+ if (!sensor_info[s].num_channels) {
+ switch (sensor_type) {
+ case SENSOR_TYPE_ACCELEROMETER:
+ max_supported_rate = 125; /* 125 Hz */
+ break;
+ case SENSOR_TYPE_GYROSCOPE:
+ case SENSOR_TYPE_GYROSCOPE_UNCALIBRATED:
+ max_supported_rate = 200; /* 200 Hz */
+ break;
+ case SENSOR_TYPE_MAGNETIC_FIELD:
+ max_supported_rate = 10; /* 10 Hz */
+ break;
+ default:
+ max_supported_rate = 0;
+ }
+ }
+ } else {
+ cursor = freqs_buf;
+ while (*cursor && cursor[0]) {
+
+ /* Decode a single value */
+ sr = strtod(cursor, NULL);
+
+ if (sr > max_supported_rate && sr <= MAX_EVENTS)
+ max_supported_rate = sr;
+
+ /* Skip digits */
+ while (cursor[0] && !isspace(cursor[0]))
+ cursor++;
+
+ /* Skip spaces */
+ while (cursor[0] && isspace(cursor[0]))
+ cursor++;
+ }
+ }
+
+ return (int32_t)(1000000.0 / max_supported_rate);