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Viewing changes to drivers/staging/iio/gyro/adis16260_trigger.c

  • Committer: Bazaar Package Importer
  • Author(s): Paolo Pisati
  • Date: 2011-06-29 15:23:51 UTC
  • mfrom: (26.1.1 natty-proposed)
  • Revision ID: james.westby@ubuntu.com-20110629152351-xs96tm303d95rpbk
Tags: 3.0.0-1200.2
* Rebased against 3.0.0-6.7
* BSP from TI based on 3.0.0

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Lines of Context:
drivers/staging/iio/gyro/adis16260_trigger.c
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#include "adis16260.h"
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/**
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 * adis16260_data_rdy_trig_poll() the event handler for the data rdy trig
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 **/
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static int adis16260_data_rdy_trig_poll(struct iio_dev *dev_info,
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                                       int index,
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                                       s64 timestamp,
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                                       int no_test)
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{
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        struct adis16260_state *st = iio_dev_get_devdata(dev_info);
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        struct iio_trigger *trig = st->trig;
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        iio_trigger_poll(trig, timestamp);
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        return IRQ_HANDLED;
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}
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IIO_EVENT_SH(data_rdy_trig, &adis16260_data_rdy_trig_poll);
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static IIO_TRIGGER_NAME_ATTR;
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static struct attribute *adis16260_trigger_attrs[] = {
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        &dev_attr_name.attr,
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        NULL,
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};
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static const struct attribute_group adis16260_trigger_attr_group = {
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        .attrs = adis16260_trigger_attrs,
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};
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/**
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 * adis16260_data_rdy_trigger_set_state() set datardy interrupt state
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 **/
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static int adis16260_data_rdy_trigger_set_state(struct iio_trigger *trig,
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{
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        struct adis16260_state *st = trig->private_data;
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        struct iio_dev *indio_dev = st->indio_dev;
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        int ret = 0;
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        dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state);
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        ret = adis16260_set_irq(&st->indio_dev->dev, state);
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        if (state == false) {
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                iio_remove_event_from_list(&iio_event_data_rdy_trig,
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                                           &indio_dev->interrupts[0]
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                                           ->ev_list);
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                flush_scheduled_work();
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        } else {
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                iio_add_event_to_list(&iio_event_data_rdy_trig,
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                                      &indio_dev->interrupts[0]->ev_list);
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        }
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        return ret;
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}
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/**
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 * adis16260_trig_try_reen() try renabling irq for data rdy trigger
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 * @trig:       the datardy trigger
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 **/
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static int adis16260_trig_try_reen(struct iio_trigger *trig)
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{
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        struct adis16260_state *st = trig->private_data;
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        enable_irq(st->us->irq);
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        return 0;
 
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        return adis16260_set_irq(indio_dev, state);
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}
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int adis16260_probe_trigger(struct iio_dev *indio_dev)
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        int ret;
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        struct adis16260_state *st = indio_dev->dev_data;
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        st->trig = iio_allocate_trigger();
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        st->trig->name = kasprintf(GFP_KERNEL,
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                                   "adis16260-dev%d",
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                                   indio_dev->id);
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        if (!st->trig->name) {
 
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        st->trig = iio_allocate_trigger("%s-dev%d",
 
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                                        spi_get_device_id(st->us)->name,
 
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                                        indio_dev->id);
 
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        if (st->trig == NULL) {
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                ret = -ENOMEM;
 
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                goto error_ret;
 
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        }
 
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        ret = request_irq(st->us->irq,
 
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                          &iio_trigger_generic_data_rdy_poll,
 
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                          IRQF_TRIGGER_RISING,
 
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                          "adis16260",
 
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                          st->trig);
 
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        if (ret)
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                goto error_free_trig;
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        }
 
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        st->trig->dev.parent = &st->us->dev;
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        st->trig->owner = THIS_MODULE;
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        st->trig->private_data = st;
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        st->trig->set_trigger_state = &adis16260_data_rdy_trigger_set_state;
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        st->trig->try_reenable = &adis16260_trig_try_reen;
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        st->trig->control_attrs = &adis16260_trigger_attr_group;
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        ret = iio_trigger_register(st->trig);
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        /* select default trigger */
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        indio_dev->trig = st->trig;
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        if (ret)
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                goto error_free_trig_name;
 
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                goto error_free_irq;
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        return 0;
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error_free_trig_name:
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        kfree(st->trig->name);
 
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error_free_irq:
 
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        free_irq(st->us->irq, st->trig);
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error_free_trig:
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        iio_free_trigger(st->trig);
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error_ret:
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        return ret;
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}
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        struct adis16260_state *state = indio_dev->dev_data;
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        iio_trigger_unregister(state->trig);
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        kfree(state->trig->name);
 
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        free_irq(state->us->irq, state->trig);
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        iio_free_trigger(state->trig);
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}