diff options
Diffstat (limited to 'drivers/staging/iio/meter/ade7758_trigger.c')
-rw-r--r-- | drivers/staging/iio/meter/ade7758_trigger.c | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/drivers/staging/iio/meter/ade7758_trigger.c b/drivers/staging/iio/meter/ade7758_trigger.c deleted file mode 100644 index 4f6b338cffeb..000000000000 --- a/drivers/staging/iio/meter/ade7758_trigger.c +++ /dev/null @@ -1,108 +0,0 @@ -/* - * ADE7758 Poly Phase Multifunction Energy Metering IC driver - * - * Copyright 2010-2011 Analog Devices Inc. - * - * Licensed under the GPL-2. - */ - -#include <linux/interrupt.h> -#include <linux/kernel.h> -#include <linux/spi/spi.h> -#include <linux/export.h> - -#include <linux/iio/iio.h> -#include <linux/iio/trigger.h> -#include "ade7758.h" - -/** - * ade7758_data_rdy_trig_poll() the event handler for the data rdy trig - **/ -static irqreturn_t ade7758_data_rdy_trig_poll(int irq, void *private) -{ - disable_irq_nosync(irq); - iio_trigger_poll(private); - - return IRQ_HANDLED; -} - -/** - * ade7758_data_rdy_trigger_set_state() set datardy interrupt state - **/ -static int ade7758_data_rdy_trigger_set_state(struct iio_trigger *trig, - bool state) -{ - struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); - - dev_dbg(&indio_dev->dev, "(%d)\n", state); - return ade7758_set_irq(&indio_dev->dev, state); -} - -/** - * ade7758_trig_try_reen() try renabling irq for data rdy trigger - * @trig: the datardy trigger - **/ -static int ade7758_trig_try_reen(struct iio_trigger *trig) -{ - struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); - struct ade7758_state *st = iio_priv(indio_dev); - - enable_irq(st->us->irq); - /* irq reenabled so success! */ - return 0; -} - -static const struct iio_trigger_ops ade7758_trigger_ops = { - .set_trigger_state = &ade7758_data_rdy_trigger_set_state, - .try_reenable = &ade7758_trig_try_reen, -}; - -int ade7758_probe_trigger(struct iio_dev *indio_dev) -{ - struct ade7758_state *st = iio_priv(indio_dev); - int ret; - - st->trig = iio_trigger_alloc("%s-dev%d", - spi_get_device_id(st->us)->name, - indio_dev->id); - if (!st->trig) { - ret = -ENOMEM; - goto error_ret; - } - - ret = request_irq(st->us->irq, - ade7758_data_rdy_trig_poll, - IRQF_TRIGGER_LOW, - spi_get_device_id(st->us)->name, - st->trig); - if (ret) - goto error_free_trig; - - st->trig->dev.parent = &st->us->dev; - st->trig->ops = &ade7758_trigger_ops; - iio_trigger_set_drvdata(st->trig, indio_dev); - ret = iio_trigger_register(st->trig); - - /* select default trigger */ - indio_dev->trig = iio_trigger_get(st->trig); - if (ret) - goto error_free_irq; - - return 0; - -error_free_irq: - free_irq(st->us->irq, st->trig); -error_free_trig: - iio_trigger_free(st->trig); -error_ret: - return ret; -} - -void ade7758_remove_trigger(struct iio_dev *indio_dev) -{ - struct ade7758_state *st = iio_priv(indio_dev); - - iio_trigger_unregister(st->trig); - free_irq(st->us->irq, st->trig); - iio_trigger_free(st->trig); -} |