diff options
Diffstat (limited to 'drivers/staging/iio/imu/adis16300_trigger.c')
-rw-r--r-- | drivers/staging/iio/imu/adis16300_trigger.c | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/drivers/staging/iio/imu/adis16300_trigger.c b/drivers/staging/iio/imu/adis16300_trigger.c deleted file mode 100644 index d6677b64edb9..000000000000 --- a/drivers/staging/iio/imu/adis16300_trigger.c +++ /dev/null @@ -1,125 +0,0 @@ -#include <linux/interrupt.h> -#include <linux/irq.h> -#include <linux/mutex.h> -#include <linux/device.h> -#include <linux/kernel.h> -#include <linux/sysfs.h> -#include <linux/list.h> -#include <linux/spi/spi.h> - -#include "../iio.h" -#include "../sysfs.h" -#include "../trigger.h" -#include "adis16300.h" - -/** - * adis16300_data_rdy_trig_poll() the event handler for the data rdy trig - **/ -static int adis16300_data_rdy_trig_poll(struct iio_dev *dev_info, - int index, - s64 timestamp, - int no_test) -{ - struct adis16300_state *st = iio_dev_get_devdata(dev_info); - struct iio_trigger *trig = st->trig; - - iio_trigger_poll(trig, timestamp); - - return IRQ_HANDLED; -} - -IIO_EVENT_SH(data_rdy_trig, &adis16300_data_rdy_trig_poll); - -static IIO_TRIGGER_NAME_ATTR; - -static struct attribute *adis16300_trigger_attrs[] = { - &dev_attr_name.attr, - NULL, -}; - -static const struct attribute_group adis16300_trigger_attr_group = { - .attrs = adis16300_trigger_attrs, -}; - -/** - * adis16300_data_rdy_trigger_set_state() set datardy interrupt state - **/ -static int adis16300_data_rdy_trigger_set_state(struct iio_trigger *trig, - bool state) -{ - struct adis16300_state *st = trig->private_data; - struct iio_dev *indio_dev = st->indio_dev; - int ret = 0; - - dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state); - ret = adis16300_set_irq(&st->indio_dev->dev, state); - if (state == false) { - iio_remove_event_from_list(&iio_event_data_rdy_trig, - &indio_dev->interrupts[0] - ->ev_list); - /* possible quirk with handler currently worked around - by ensuring the work queue is empty */ - flush_scheduled_work(); - } else { - iio_add_event_to_list(&iio_event_data_rdy_trig, - &indio_dev->interrupts[0]->ev_list); - } - return ret; -} - -/** - * adis16300_trig_try_reen() try renabling irq for data rdy trigger - * @trig: the datardy trigger - **/ -static int adis16300_trig_try_reen(struct iio_trigger *trig) -{ - struct adis16300_state *st = trig->private_data; - enable_irq(st->us->irq); - /* irq reenabled so success! */ - return 0; -} - -int adis16300_probe_trigger(struct iio_dev *indio_dev) -{ - int ret; - struct adis16300_state *st = indio_dev->dev_data; - - st->trig = iio_allocate_trigger(); - st->trig->name = kasprintf(GFP_KERNEL, - "adis16300-dev%d", - indio_dev->id); - if (!st->trig->name) { - ret = -ENOMEM; - goto error_free_trig; - } - st->trig->dev.parent = &st->us->dev; - st->trig->owner = THIS_MODULE; - st->trig->private_data = st; - st->trig->set_trigger_state = &adis16300_data_rdy_trigger_set_state; - st->trig->try_reenable = &adis16300_trig_try_reen; - st->trig->control_attrs = &adis16300_trigger_attr_group; - ret = iio_trigger_register(st->trig); - - /* select default trigger */ - indio_dev->trig = st->trig; - if (ret) - goto error_free_trig_name; - - return 0; - -error_free_trig_name: - kfree(st->trig->name); -error_free_trig: - iio_free_trigger(st->trig); - - return ret; -} - -void adis16300_remove_trigger(struct iio_dev *indio_dev) -{ - struct adis16300_state *state = indio_dev->dev_data; - - iio_trigger_unregister(state->trig); - kfree(state->trig->name); - iio_free_trigger(state->trig); -} |