diff options
| author | Daniel Baluta <daniel.baluta@intel.com> | 2014-11-10 14:45:29 +0200 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2014-11-22 11:05:44 +0000 |
| commit | 356ae946f9945997213b19279bc2e84bb61cc26a (patch) | |
| tree | bb833bd9115524bc59d4a69424cd4ae8913d5c8f /drivers/staging/iio/iio_simple_dummy_events.c | |
| parent | d7d787d29148cde12958c2e3765ad3a55dc55eaf (diff) | |
iio: dummy: Add virtual registers for dummy device
We need a way to store events generated by iio_dummy_evgen module,
in order to correctly process IRQs in iio_simple_dummy_events.
For the moment, we add two registers:
* id_reg - ID register, stores the source of the event
* id_data - DATA register, stores the type of the event
e.g echo 4 > /sys/bus/iio/devices/iio_evgen/poke2
id_reg 0x02, id_data 0x04
This means, event of type 4 was generated by fake device 2.
We currently use a hardcoded mapping of virtual events to IIO events.
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/staging/iio/iio_simple_dummy_events.c')
| -rw-r--r-- | drivers/staging/iio/iio_simple_dummy_events.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/drivers/staging/iio/iio_simple_dummy_events.c b/drivers/staging/iio/iio_simple_dummy_events.c index 64b45b077549..719dfa5ae7df 100644 --- a/drivers/staging/iio/iio_simple_dummy_events.c +++ b/drivers/staging/iio/iio_simple_dummy_events.c @@ -148,12 +148,23 @@ int iio_simple_dummy_write_event_value(struct iio_dev *indio_dev, static irqreturn_t iio_simple_dummy_event_handler(int irq, void *private) { struct iio_dev *indio_dev = private; + struct iio_dummy_state *st = iio_priv(indio_dev); + + dev_dbg(&indio_dev->dev, "id %x event %x\n", + st->regs->reg_id, st->regs->reg_data); + + switch (st->regs->reg_data) { + case 0: + iio_push_event(indio_dev, + IIO_EVENT_CODE(IIO_VOLTAGE, 0, 0, + IIO_EV_DIR_RISING, + IIO_EV_TYPE_THRESH, 0, 0, 0), + iio_get_time_ns()); + break; + default: + break; + } - iio_push_event(indio_dev, - IIO_EVENT_CODE(IIO_VOLTAGE, 0, 0, - IIO_EV_DIR_RISING, - IIO_EV_TYPE_THRESH, 0, 0, 0), - iio_get_time_ns()); return IRQ_HANDLED; } @@ -179,6 +190,8 @@ int iio_simple_dummy_events_register(struct iio_dev *indio_dev) ret = st->event_irq; goto error_ret; } + st->regs = iio_dummy_evgen_get_regs(st->event_irq); + ret = request_threaded_irq(st->event_irq, NULL, &iio_simple_dummy_event_handler, |