diff options
Diffstat (limited to 'include/linux/iio/iio-opaque.h')
| -rw-r--r-- | include/linux/iio/iio-opaque.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/include/linux/iio/iio-opaque.h b/include/linux/iio/iio-opaque.h new file mode 100644 index 000000000000..d1f8b30a7c8b --- /dev/null +++ b/include/linux/iio/iio-opaque.h @@ -0,0 +1,80 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef _INDUSTRIAL_IO_OPAQUE_H_ +#define _INDUSTRIAL_IO_OPAQUE_H_ + +/** + * struct iio_dev_opaque - industrial I/O device opaque information + * @indio_dev: public industrial I/O device information + * @id: used to identify device internally + * @currentmode: operating mode currently in use, may be eventually + * checked by device drivers but should be considered + * read-only as this is a core internal bit + * @driver_module: used to make it harder to undercut users + * @mlock_key: lockdep class for iio_dev lock + * @info_exist_lock: lock to prevent use during removal + * @trig_readonly: mark the current trigger immutable + * @event_interface: event chrdevs associated with interrupt lines + * @attached_buffers: array of buffers statically attached by the driver + * @attached_buffers_cnt: number of buffers in the array of statically attached buffers + * @buffer_ioctl_handler: ioctl() handler for this IIO device's buffer interface + * @buffer_list: list of all buffers currently attached + * @channel_attr_list: keep track of automatically created channel + * attributes + * @chan_attr_group: group for all attrs in base directory + * @ioctl_handlers: ioctl handlers registered with the core handler + * @groups: attribute groups + * @groupcounter: index of next attribute group + * @legacy_scan_el_group: attribute group for legacy scan elements attribute group + * @legacy_buffer_group: attribute group for legacy buffer attributes group + * @bounce_buffer: for devices that call iio_push_to_buffers_with_timestamp_unaligned() + * @bounce_buffer_size: size of currently allocate bounce buffer + * @scan_index_timestamp: cache of the index to the timestamp + * @clock_id: timestamping clock posix identifier + * @chrdev: associated character device + * @flags: file ops related flags including busy flag. + * @debugfs_dentry: device specific debugfs dentry + * @cached_reg_addr: cached register address for debugfs reads + * @read_buf: read buffer to be used for the initial reg read + * @read_buf_len: data length in @read_buf + */ +struct iio_dev_opaque { + struct iio_dev indio_dev; + int currentmode; + int id; + struct module *driver_module; + struct lock_class_key mlock_key; + struct mutex info_exist_lock; + bool trig_readonly; + struct iio_event_interface *event_interface; + struct iio_buffer **attached_buffers; + unsigned int attached_buffers_cnt; + struct iio_ioctl_handler *buffer_ioctl_handler; + struct list_head buffer_list; + struct list_head channel_attr_list; + struct attribute_group chan_attr_group; + struct list_head ioctl_handlers; + const struct attribute_group **groups; + int groupcounter; + struct attribute_group legacy_scan_el_group; + struct attribute_group legacy_buffer_group; + void *bounce_buffer; + size_t bounce_buffer_size; + + unsigned int scan_index_timestamp; + clockid_t clock_id; + struct cdev chrdev; + unsigned long flags; + +#if defined(CONFIG_DEBUG_FS) + struct dentry *debugfs_dentry; + unsigned cached_reg_addr; + char read_buf[20]; + unsigned int read_buf_len; +#endif +}; + +#define to_iio_dev_opaque(_indio_dev) \ + container_of((_indio_dev), struct iio_dev_opaque, indio_dev) + +#endif |