Release 4.7 drivers/iio/common/st_sensors/st_sensors_buffer.c
/*
* STMicroelectronics sensors buffer library driver
*
* Copyright 2012-2013 STMicroelectronics Inc.
*
* Denis Ciocca <denis.ciocca@st.com>
*
* Licensed under the GPL-2.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/iio/iio.h>
#include <linux/iio/trigger.h>
#include <linux/interrupt.h>
#include <linux/iio/buffer.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/iio/triggered_buffer.h>
#include <linux/irqreturn.h>
#include <linux/iio/common/st_sensors.h>
int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8 *buf)
{
int i, len;
int total = 0;
struct st_sensor_data *sdata = iio_priv(indio_dev);
unsigned int num_data_channels = sdata->num_data_channels;
for (i = 0; i < num_data_channels; i++) {
unsigned int bytes_to_read;
if (test_bit(i, indio_dev->active_scan_mask)) {
bytes_to_read = indio_dev->channels[i].scan_type.storagebits >> 3;
len = sdata->tf->read_multiple_byte(&sdata->tb,
sdata->dev, indio_dev->channels[i].address,
bytes_to_read,
buf + total, sdata->multiread_bit);
if (len < bytes_to_read)
return -EIO;
/* Advance the buffer pointer */
total += len;
}
}
return total;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| denis ciocca | denis ciocca | 112 | 77.78% | 2 | 50.00% |
| linus walleij | linus walleij | 32 | 22.22% | 2 | 50.00% |
| Total | 144 | 100.00% | 4 | 100.00% |
EXPORT_SYMBOL(st_sensors_get_buffer_element);
irqreturn_t st_sensors_trigger_handler(int irq, void *p)
{
int len;
struct iio_poll_func *pf = p;
struct iio_dev *indio_dev = pf->indio_dev;
struct st_sensor_data *sdata = iio_priv(indio_dev);
s64 timestamp;
/* If we do timetamping here, do it before reading the values */
if (sdata->hw_irq_trigger)
timestamp = sdata->hw_timestamp;
else
timestamp = iio_get_time_ns();
len = st_sensors_get_buffer_element(indio_dev, sdata->buffer_data);
if (len < 0)
goto st_sensors_get_buffer_element_error;
iio_push_to_buffers_with_timestamp(indio_dev, sdata->buffer_data,
timestamp);
st_sensors_get_buffer_element_error:
iio_trigger_notify_done(indio_dev->trig);
return IRQ_HANDLED;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| denis ciocca | denis ciocca | 81 | 76.42% | 1 | 25.00% |
| linus walleij | linus walleij | 22 | 20.75% | 2 | 50.00% |
| lars-peter clausen | lars-peter clausen | 3 | 2.83% | 1 | 25.00% |
| Total | 106 | 100.00% | 4 | 100.00% |
EXPORT_SYMBOL(st_sensors_trigger_handler);
MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
MODULE_DESCRIPTION("STMicroelectronics ST-sensors buffer");
MODULE_LICENSE("GPL v2");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| denis ciocca | denis ciocca | 252 | 81.55% | 2 | 28.57% |
| linus walleij | linus walleij | 54 | 17.48% | 4 | 57.14% |
| lars-peter clausen | lars-peter clausen | 3 | 0.97% | 1 | 14.29% |
| Total | 309 | 100.00% | 7 | 100.00% |
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