diff options
| -rw-r--r-- | drivers/iio/adc/ad_sigma_delta.c | 60 | ||||
| -rw-r--r-- | include/linux/iio/adc/ad_sigma_delta.h | 3 |
2 files changed, 63 insertions, 0 deletions
diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c index 69b979331ccd..d5801a47be07 100644 --- a/drivers/iio/adc/ad_sigma_delta.c +++ b/drivers/iio/adc/ad_sigma_delta.c @@ -513,6 +513,46 @@ error_ret: return ret; } +static int devm_ad_sd_probe_trigger(struct device *dev, struct iio_dev *indio_dev) +{ + struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev); + int ret; + + if (dev != &sigma_delta->spi->dev) { + dev_err(dev, "Trigger parent should be '%s', got '%s'\n", + dev_name(dev), dev_name(&sigma_delta->spi->dev)); + return -EFAULT; + } + + sigma_delta->trig = devm_iio_trigger_alloc(dev, "%s-dev%d", indio_dev->name, + iio_device_id(indio_dev)); + if (sigma_delta->trig == NULL) + return -ENOMEM; + + sigma_delta->trig->ops = &ad_sd_trigger_ops; + init_completion(&sigma_delta->completion); + + sigma_delta->irq_dis = true; + ret = devm_request_irq(dev, sigma_delta->spi->irq, + ad_sd_data_rdy_trig_poll, + sigma_delta->info->irq_flags | IRQF_NO_AUTOEN, + indio_dev->name, + sigma_delta); + if (ret) + return ret; + + iio_trigger_set_drvdata(sigma_delta->trig, sigma_delta); + + ret = devm_iio_trigger_register(dev, sigma_delta->trig); + if (ret) + return ret; + + /* select default trigger */ + indio_dev->trig = iio_trigger_get(sigma_delta->trig); + + return 0; +} + static void ad_sd_remove_trigger(struct iio_dev *indio_dev) { struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev); @@ -557,6 +597,26 @@ void ad_sd_cleanup_buffer_and_trigger(struct iio_dev *indio_dev) EXPORT_SYMBOL_GPL(ad_sd_cleanup_buffer_and_trigger); /** + * devm_ad_sd_setup_buffer_and_trigger() - Device-managed buffer & trigger setup + * @dev: Device object to which to bind the life-time of the resources attached + * @indio_dev: The IIO device + */ +int devm_ad_sd_setup_buffer_and_trigger(struct device *dev, struct iio_dev *indio_dev) +{ + int ret; + + ret = devm_iio_triggered_buffer_setup(dev, indio_dev, + &iio_pollfunc_store_time, + &ad_sd_trigger_handler, + &ad_sd_buffer_setup_ops); + if (ret) + return ret; + + return devm_ad_sd_probe_trigger(dev, indio_dev); +} +EXPORT_SYMBOL_GPL(devm_ad_sd_setup_buffer_and_trigger); + +/** * ad_sd_init() - Initializes a ad_sigma_delta struct * @sigma_delta: The ad_sigma_delta device * @indio_dev: The IIO device which the Sigma Delta device is used for diff --git a/include/linux/iio/adc/ad_sigma_delta.h b/include/linux/iio/adc/ad_sigma_delta.h index 7199280d89ca..be81ad39fb7a 100644 --- a/include/linux/iio/adc/ad_sigma_delta.h +++ b/include/linux/iio/adc/ad_sigma_delta.h @@ -26,6 +26,7 @@ struct ad_sd_calib_data { }; struct ad_sigma_delta; +struct device; struct iio_dev; /** @@ -135,6 +136,8 @@ int ad_sd_init(struct ad_sigma_delta *sigma_delta, struct iio_dev *indio_dev, int ad_sd_setup_buffer_and_trigger(struct iio_dev *indio_dev); void ad_sd_cleanup_buffer_and_trigger(struct iio_dev *indio_dev); +int devm_ad_sd_setup_buffer_and_trigger(struct device *dev, struct iio_dev *indio_dev); + int ad_sd_validate_trigger(struct iio_dev *indio_dev, struct iio_trigger *trig); #endif |