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| author | Jonathan Cameron <jic23@cam.ac.uk> | 2011-08-24 17:28:41 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-24 14:23:44 -0700 |
| commit | 208b813c04ef7e628783cc62eeb1a140ae25bd19 (patch) | |
| tree | 744b5bd0dbf4c88b9a889580536fb958377179c1 /drivers/staging/iio/industrialio-trigger.c | |
| parent | cb6c89a094df3823a1797b880e5dfda2fbfcd584 (diff) | |
| download | op-kernel-dev-208b813c04ef7e628783cc62eeb1a140ae25bd19.zip op-kernel-dev-208b813c04ef7e628783cc62eeb1a140ae25bd19.tar.gz | |
staging:iio:trigger push functions that don't need to be generaly available down into the core.
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/iio/industrialio-trigger.c')
| -rw-r--r-- | drivers/staging/iio/industrialio-trigger.c | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/drivers/staging/iio/industrialio-trigger.c b/drivers/staging/iio/industrialio-trigger.c index 72ea106..f1ece86 100644 --- a/drivers/staging/iio/industrialio-trigger.c +++ b/drivers/staging/iio/industrialio-trigger.c @@ -215,6 +215,26 @@ void iio_trigger_notify_done(struct iio_trigger *trig) EXPORT_SYMBOL(iio_trigger_notify_done); /* Trigger Consumer related functions */ +static int iio_trigger_get_irq(struct iio_trigger *trig) +{ + int ret; + mutex_lock(&trig->pool_lock); + ret = bitmap_find_free_region(trig->pool, + CONFIG_IIO_CONSUMERS_PER_TRIGGER, + ilog2(1)); + mutex_unlock(&trig->pool_lock); + if (ret >= 0) + ret += trig->subirq_base; + + return ret; +} + +static void iio_trigger_put_irq(struct iio_trigger *trig, int irq) +{ + mutex_lock(&trig->pool_lock); + clear_bit(irq - trig->subirq_base, trig->pool); + mutex_unlock(&trig->pool_lock); +} /* Complexity in here. With certain triggers (datardy) an acknowledgement * may be needed if the pollfuncs do not include the data read for the @@ -223,8 +243,8 @@ EXPORT_SYMBOL(iio_trigger_notify_done); * the relevant function is in there may be the best option. */ /* Worth protecting against double additions?*/ -int iio_trigger_attach_poll_func(struct iio_trigger *trig, - struct iio_poll_func *pf) +static int iio_trigger_attach_poll_func(struct iio_trigger *trig, + struct iio_poll_func *pf) { int ret = 0; bool notinuse @@ -241,10 +261,9 @@ int iio_trigger_attach_poll_func(struct iio_trigger *trig, return ret; } -EXPORT_SYMBOL(iio_trigger_attach_poll_func); -int iio_trigger_dettach_poll_func(struct iio_trigger *trig, - struct iio_poll_func *pf) +static int iio_trigger_dettach_poll_func(struct iio_trigger *trig, + struct iio_poll_func *pf) { int ret = 0; bool no_other_users @@ -263,7 +282,6 @@ int iio_trigger_dettach_poll_func(struct iio_trigger *trig, error_ret: return ret; } -EXPORT_SYMBOL(iio_trigger_dettach_poll_func); irqreturn_t iio_pollfunc_store_time(int irq, void *p) { |
