ssize_t iio_buffer_push(struct iio_buffer *buffer)
{
const struct iio_device *dev = buffer->dev;
ssize_t ret;
if (buffer->dev_is_high_speed) {
void *buf;
ret = dev->ctx->ops->get_buffer(dev, &buf,
buffer->data_length, buffer->mask, dev->words);
if (ret >= 0) {
buffer->buffer = buf;
ret = (ssize_t) buffer->data_length;
}
} else {
void *ptr = buffer->buffer;
size_t tmp_len;
/* iio_device_write_raw doesn't guarantee that all bytes are
* written */
for (tmp_len = buffer->data_length; tmp_len; ) {
ret = iio_device_write_raw(dev, ptr, tmp_len);
if (ret < 0)
goto out_reset_data_length;
tmp_len -= ret;
ptr = (void *) ((uintptr_t) ptr + ret);
}
ret = (ssize_t) buffer->data_length;
}
out_reset_data_length:
buffer->data_length = buffer->length;
return ret;
}
ssize_t iio_buffer_push(struct iio_buffer *buffer)
{
const struct iio_device *dev = buffer->dev;
if (buffer->dev_is_high_speed) {
void *buf;
ssize_t ret = dev->ctx->ops->get_buffer(dev,
&buf, buffer->length, buffer->mask, dev->words);
if (ret >= 0)
buffer->buffer = buf;
return ret;
} else {
size_t length = buffer->length;
void *ptr = buffer->buffer;
/* iio_device_write_raw doesn't guarantee that all bytes are
* written */
while (length) {
ssize_t ret = iio_device_write_raw(dev, ptr, length);
if (ret < 0)
return ret;
length -= ret;
ptr = (void *) ((uintptr_t) ptr + ret);
}
return (ssize_t) buffer->length;
}
}
