From 2837efdc7cef5b86b0c4d94a7410bc03cc2f003f Mon Sep 17 00:00:00 2001 From: Denis Benato Date: Wed, 7 Aug 2024 20:56:18 +0200 Subject: iio: trigger: allow devices to suspend/resume theirs associated trigger When a machine enters a sleep state while a trigger is associated to an iio device that trigger is not resumed after exiting the sleep state: provide iio device drivers a way to suspend and resume the associated trigger to solve the aforementioned bug. Each iio driver supporting external triggers is expected to call iio_device_suspend_triggering before suspending, and iio_device_resume_triggering upon resuming. Signed-off-by: Denis Benato Link: https://patch.msgid.link/20240807185619.7261-2-benato.denis96@gmail.com Signed-off-by: Jonathan Cameron --- include/linux/iio/iio.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'include/linux/iio') diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 3a735a9a9eae..18779b631e90 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -810,6 +810,23 @@ static inline struct dentry *iio_get_debugfs_dentry(struct iio_dev *indio_dev) } #endif +/** + * iio_device_suspend_triggering() - suspend trigger attached to an iio_dev + * @indio_dev: iio_dev associated with the device that will have triggers suspended + * + * Return 0 if successful, negative otherwise + **/ +int iio_device_suspend_triggering(struct iio_dev *indio_dev); + +/** + * iio_device_resume_triggering() - resume trigger attached to an iio_dev + * that was previously suspended with iio_device_suspend_triggering() + * @indio_dev: iio_dev associated with the device that will have triggers resumed + * + * Return 0 if successful, negative otherwise + **/ +int iio_device_resume_triggering(struct iio_dev *indio_dev); + #ifdef CONFIG_ACPI bool iio_read_acpi_mount_matrix(struct device *dev, struct iio_mount_matrix *orientation, -- cgit v1.2.3