drivers/iio/industrialio-trigger.c

2 /* The industrial I/O core, trigger handling functions
18 #include <linux/iio/trigger.h>
24  * Make the common case (single sensor single trigger)
25  * simple by starting trigger capture from when first sensors
29  * of the trigger. (not implemented)
77 	dev_set_name(&trig_info->dev, "trigger%d", trig_info->id);  in iio_trigger_register()
86 			pr_err("Duplicate trigger name '%s'\n", trig_info->name);  in iio_trigger_register()
132 /* Search for trigger by name, assuming iio_trigger_list_lock held */
162 	 * This 'might' occur after the trigger state is set to disabled -  in iio_reenable_work_fn()
171  * to reneable the trigger for us.
176  * 2) The trigger has been removed, but one last interrupt gets through.
190  * iio_trigger_poll() - Call the IRQ trigger handler of the consumers
191  * @trig: trigger which occurred
220  * iio_trigger_poll_nested() - Call the threaded trigger handler of the
222  * @trig: trigger which occurred
251 /* Trigger Consumer related functions */
276  * This is not currently handled.  Alternative of not enabling trigger unless
288 	/* Prevent the module from being removed whilst attached to a trigger */  in iio_trigger_attach_poll_func()
294 …pr_err("Could not find an available irq for trigger %s, CONFIG_IIO_CONSUMERS_PER_TRIGGER=%d limit …  in iio_trigger_attach_poll_func()
306 	/* Enable trigger in driver */  in iio_trigger_attach_poll_func()
314 	 * Check if we just registered to our own trigger: we determine that  in iio_trigger_attach_poll_func()
315 	 * this is the case if the IIO device and the trigger device share the  in iio_trigger_attach_poll_func()
402  * current_trigger_show() - trigger consumer sysfs query current trigger
406  * @buf:	buffer where the current trigger name will be printed into
408  * For trigger consumers the current_trigger interface allows the trigger
412  *	   on success or 0 if no trigger is available
425  * current_trigger_store() - trigger consumer sysfs set current trigger
428  * @buf:	string buffer that holds the name of the trigger
429  * @len:	length of the trigger name held by buf
431  * For trigger consumers the current_trigger interface allows the trigger
432  * used for this device to be specified at run time based on the trigger's
503 	.name = "trigger",
605  * __iio_trigger_alloc - Allocate a trigger
607  * @this_mod:		module allocating the trigger
608  * @fmt:		trigger name format. If it includes format
647  * @this_mod:		module allocating the trigger
648  * @fmt:		trigger name format. If it includes format
691  * @dev:	device this trigger was allocated for
692  * @trig_info:	trigger to register
694  * Managed iio_trigger_register().  The IIO trigger registered with this
722  * iio_validate_own_trigger - Check if a trigger and IIO device belong to
725  * @trig: the IIO trigger to check
730  * Return: 0 if both the trigger and the IIO device belong to the same
742  * iio_trigger_validate_own_device - Check if a trigger and IIO device belong to
744  * @trig: The IIO trigger to check
750  * Return: 0 if both the trigger and the IIO device belong to the same
770 	/* Clean up an associated but not attached trigger reference */  in iio_device_unregister_trigger_consumer()