d785949196
In subdev close call if CRM is still active wait for shutdown from CRM [media device]. Remove subdevice check for active handles, shutdown to happen irrespective of any active context. If CRM is not active, subdevice shutdown should ensure there is no access to kernel allocated buffers since at this point memmgr is de-initialized. As part of ICP close, remove usage of HFI queues, trigger PIL to transfer FW memory ownership back to HLOS and power off ICP. CRs-Fixed: 2976107 Change-Id: Ib05b3fbdcc33f4072da7ef77cf0118a807860e8c Signed-off-by: Karthik Anantha Ram <kartanan@codeaurora.org>
148 lines
4.4 KiB
C
148 lines
4.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2017-2021, The Linux Foundation. All rights reserved.
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*/
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#ifndef _CAM_SUBDEV_H_
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#define _CAM_SUBDEV_H_
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#include <linux/types.h>
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#include <linux/platform_device.h>
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#include <media/v4l2-fh.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-subdev.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-ioctl.h>
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#define CAM_SUBDEVICE_EVENT_MAX 30
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enum cam_subdev_message_type_t {
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CAM_SUBDEV_MESSAGE_IRQ_ERR = 0x1
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};
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/* Enum for close sequence priority */
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enum cam_subdev_close_seq_priority {
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CAM_SD_CLOSE_HIGH_PRIORITY,
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CAM_SD_CLOSE_MEDIUM_PRIORITY,
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CAM_SD_CLOSE_LOW_PRIORITY
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};
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/**
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* struct cam_subdev - describes a camera sub-device
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*
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* @pdev: Pointer to the platform device
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* @sd: V4l2 subdevice
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* @ops: V4l2 subdecie operations
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* @internal_ops: V4l2 subdevice internal operations
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* @name: Name of the sub-device. Please notice that the name
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* must be unique.
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* @sd_flags: Subdev flags. Can be:
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* %V4L2_SUBDEV_FL_HAS_DEVNODE - Set this flag if
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* this subdev needs a device node.
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* %V4L2_SUBDEV_FL_HAS_EVENTS - Set this flag if
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* this subdev generates events.
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* @token: Pointer to cookie of the client driver
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* @ent_function: Media entity function type. Can be:
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* %CAM_IFE_DEVICE_TYPE - identifies as IFE device.
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* %CAM_ICP_DEVICE_TYPE - identifies as ICP device.
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* @list: list pointer
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* @close_seq_prior: cam_subdev_close_seq_priority type
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*
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* Each instance of a subdev driver should create this struct, either
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* stand-alone or embedded in a larger struct. This structure should be
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* initialized/registered by cam_register_subdev
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*
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*/
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struct cam_subdev {
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struct platform_device *pdev;
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struct v4l2_subdev sd;
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const struct v4l2_subdev_ops *ops;
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const struct v4l2_subdev_internal_ops *internal_ops;
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char *name;
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u32 sd_flags;
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void *token;
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u32 ent_function;
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void (*msg_cb)(
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struct v4l2_subdev *sd,
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enum cam_subdev_message_type_t msg_type,
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uint32_t data);
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struct list_head list;
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enum cam_subdev_close_seq_priority close_seq_prior;
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};
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/**
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* cam_subdev_notify_message()
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*
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* @brief: Notify message to a subdevs of specific type
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*
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* @subdev_type: Subdev type
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* @message_type: message type
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* @data: data to be delivered.
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*
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*/
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void cam_subdev_notify_message(u32 subdev_type,
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enum cam_subdev_message_type_t message_type,
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uint32_t data);
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/**
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* cam_subdev_probe()
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*
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* @brief: Camera Subdevice node probe function for v4l2 setup
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*
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* @sd: Camera subdevice object
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* @name: Name of the subdevice node
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* @dev_type: Subdevice node type
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*
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*/
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int cam_subdev_probe(struct cam_subdev *sd, struct platform_device *pdev,
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char *name, uint32_t dev_type);
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/**
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* cam_subdev_remove()
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*
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* @brief: Called when subdevice node is unloaded
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*
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* @sd: Camera subdevice node object
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*
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*/
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int cam_subdev_remove(struct cam_subdev *sd);
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/**
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* cam_register_subdev()
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*
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* @brief: This is the common utility function to be called by each camera
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* subdevice node when it tries to register itself to the camera
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* request manager
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*
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* @sd: Pointer to struct cam_subdev.
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*/
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int cam_register_subdev(struct cam_subdev *sd);
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/**
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* cam_unregister_subdev()
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*
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* @brief: This is the common utility function to be called by each camera
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* subdevice node when it tries to unregister itself from the
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* camera request manger
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*
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* @sd: Pointer to struct cam_subdev.
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*/
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int cam_unregister_subdev(struct cam_subdev *sd);
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/**
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* cam_req_mgr_is_open()
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*
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* @brief: This common utility function returns the crm active status
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*
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*/
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bool cam_req_mgr_is_open(void);
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/**
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* cam_req_mgr_is_shutdown()
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*
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* @brief: This common utility function returns the shutdown state
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*/
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bool cam_req_mgr_is_shutdown(void);
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#endif /* _CAM_SUBDEV_H_ */
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