* Note that when reading the sensor actually 84 edges are detected, but
* since the last edge is not significant, we only store 83:
*/
-#define DHT11_EDGES_PER_READ (2*DHT11_BITS_PER_READ + DHT11_EDGES_PREAMBLE + 1)
+#define DHT11_EDGES_PER_READ (2 * DHT11_BITS_PER_READ + \
+ DHT11_EDGES_PREAMBLE + 1)
/* Data transmission timing (nano seconds) */
#define DHT11_START_TRANSMISSION 18 /* ms */
/* Calculate timestamp resolution */
for (i = 1; i < dht11->num_edges; ++i) {
- t = dht11->edges[i].ts - dht11->edges[i-1].ts;
+ t = dht11->edges[i].ts - dht11->edges[i - 1].ts;
if (t > 0 && t < timeres)
timeres = t;
}
- if (2*timeres > DHT11_DATA_BIT_HIGH) {
+ if (2 * timeres > DHT11_DATA_BIT_HIGH) {
pr_err("dht11: timeresolution %d too bad for decoding\n",
- timeres);
+ timeres);
return -EIO;
}
threshold = DHT11_DATA_BIT_HIGH / timeres;
- if (DHT11_DATA_BIT_LOW/timeres + 1 >= threshold)
+ if (DHT11_DATA_BIT_LOW / timeres + 1 >= threshold)
pr_err("dht11: WARNING: decoding ambiguous\n");
/* scale down with timeres and check validity */
for (i = 0; i < DHT11_BITS_PER_READ; ++i) {
- t = dht11->edges[offset + 2*i + 2].ts -
- dht11->edges[offset + 2*i + 1].ts;
- if (!dht11->edges[offset + 2*i + 1].value)
+ t = dht11->edges[offset + 2 * i + 2].ts -
+ dht11->edges[offset + 2 * i + 1].ts;
+ if (!dht11->edges[offset + 2 * i + 1].value)
return -EIO; /* lost synchronisation */
timing[i] = t / timeres;
}
}
static int dht11_read_raw(struct iio_dev *iio_dev,
- const struct iio_chan_spec *chan,
+ const struct iio_chan_spec *chan,
int *val, int *val2, long m)
{
struct dht11 *dht11 = iio_priv(iio_dev);
goto err;
ret = wait_for_completion_killable_timeout(&dht11->completion,
- HZ);
+ HZ);
free_irq(dht11->irq, iio_dev);
if (ret == 0 && dht11->num_edges < DHT11_EDGES_PER_READ - 1) {
dev_err(&iio_dev->dev,
- "Only %d signal edges detected\n",
+ "Only %d signal edges detected\n",
dht11->num_edges);
ret = -ETIMEDOUT;
}
goto err;
ret = dht11_decode(dht11,
- dht11->num_edges == DHT11_EDGES_PER_READ ?
+ dht11->num_edges == DHT11_EDGES_PER_READ ?
DHT11_EDGES_PREAMBLE :
DHT11_EDGES_PREAMBLE - 2);
if (ret)