diff options
Diffstat (limited to 'drivers/iio/imu/adis16400_core.c')
| -rw-r--r-- | drivers/iio/imu/adis16400_core.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/iio/imu/adis16400_core.c b/drivers/iio/imu/adis16400_core.c index 46a569005a13..f9cb9e11e636 100644 --- a/drivers/iio/imu/adis16400_core.c +++ b/drivers/iio/imu/adis16400_core.c @@ -31,6 +31,7 @@ #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> #include <linux/iio/buffer.h> +#include <linux/iio/trigger_consumer.h> #include "adis16400.h" @@ -465,6 +466,51 @@ static int adis16400_read_raw(struct iio_dev *indio_dev, } } +#if IS_ENABLED(CONFIG_IIO_BUFFER) +static irqreturn_t adis16400_trigger_handler(int irq, void *p) +{ + struct iio_poll_func *pf = p; + struct iio_dev *indio_dev = pf->indio_dev; + struct adis16400_state *st = iio_priv(indio_dev); + struct adis *adis = &st->adis; + u32 old_speed_hz = st->adis.spi->max_speed_hz; + void *buffer; + int ret; + + if (!adis->buffer) + return -ENOMEM; + + if (!(st->variant->flags & ADIS16400_NO_BURST) && + st->adis.spi->max_speed_hz > ADIS16400_SPI_BURST) { + st->adis.spi->max_speed_hz = ADIS16400_SPI_BURST; + spi_setup(st->adis.spi); + } + + ret = spi_sync(adis->spi, &adis->msg); + if (ret) + dev_err(&adis->spi->dev, "Failed to read data: %d\n", ret); + + if (!(st->variant->flags & ADIS16400_NO_BURST)) { + st->adis.spi->max_speed_hz = old_speed_hz; + spi_setup(st->adis.spi); + } + + if (st->variant->flags & ADIS16400_BURST_DIAG_STAT) + buffer = adis->buffer + sizeof(u16); + else + buffer = adis->buffer; + + iio_push_to_buffers_with_timestamp(indio_dev, buffer, + pf->timestamp); + + iio_trigger_notify_done(indio_dev->trig); + + return IRQ_HANDLED; +} +#else +#define adis16400_trigger_handler NULL +#endif /* IS_ENABLED(CONFIG_IIO_BUFFER) */ + #define ADIS16400_VOLTAGE_CHAN(addr, bits, name, si, chn) { \ .type = IIO_VOLTAGE, \ .indexed = 1, \ |