Loading drivers/media/platform/msm/camera/Makefile +1 −2 Original line number Diff line number Diff line ccflags-y += -Idrivers/media/platform/msm/camera/cam_req_mgr obj-$(CONFIG_SPECTRA_CAMERA) += cam_req_mgr/ obj-$(CONFIG_SPECTRA_CAMERA) += cam_utils/ obj-$(CONFIG_SPECTRA_CAMERA) += cam_core/ obj-$(CONFIG_SPECTRA_CAMERA) += cam_sync/ drivers/media/platform/msm/camera/cam_sync/Makefile 0 → 100644 +1 −0 Original line number Diff line number Diff line obj-$(CONFIG_SPECTRA_CAMERA) += cam_sync.o cam_sync_util.o drivers/media/platform/msm/camera/cam_sync/cam_sync.c 0 → 100644 +1024 −0 File added.Preview size limit exceeded, changes collapsed. Show changes drivers/media/platform/msm/camera/cam_sync/cam_sync_api.h 0 → 100644 +128 −0 Original line number Diff line number Diff line /* Copyright (c) 2017, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifndef __CAM_SYNC_API_H__ #define __CAM_SYNC_API_H__ #include <linux/mutex.h> #include <linux/list.h> #include <linux/completion.h> #include <linux/videodev2.h> #include <uapi/media/cam_sync.h> #define SYNC_DEBUG_NAME_LEN 63 typedef void (*sync_callback)(int32_t sync_obj, int status, void *data); /* Kernel APIs */ /** * @brief: Creates a sync object * * The newly created sync obj is assigned to sync_obj. * sync object. * * @param sync_obj : Pointer to int referencing the sync object. * @param name : Optional parameter associating a name with the sync object for * debug purposes. Only first SYNC_DEBUG_NAME_LEN bytes are accepted, * rest will be ignored. * * @return Status of operation. Zero in case of success. * -EINVAL will be returned if sync_obj is an invalid pointer. * -ENOMEM will be returned if the kernel can't allocate space for * sync object. */ int cam_sync_create(int32_t *sync_obj, const char *name); /** * @brief: Registers a callback with a sync object * * @param cb_func: Pointer to callback to be registered * @param userdata: Opaque pointer which will be passed back with callback. * @param sync_obj: int referencing the sync object. * * @return Status of operation. Zero in case of success. * -EINVAL will be returned if userdata is invalid. * -ENOMEM will be returned if cb_func is invalid. * */ int cam_sync_register_callback(sync_callback cb_func, void *userdata, int32_t sync_obj); /** * @brief: De-registers a callback with a sync object * * @param cb_func: Pointer to callback to be de-registered * @param userdata: Opaque pointer which will be passed back with callback. * @param sync_obj: int referencing the sync object. * * @return Status of operation. Zero in case of success. * -EINVAL will be returned if userdata is invalid. * -ENOMEM will be returned if cb_func is invalid. */ int cam_sync_deregister_callback(sync_callback cb_func, void *userdata, int32_t sync_obj); /** * @brief: Signals a sync object with the status argument. * * This function will signal the sync object referenced by the sync_obj * parameter and when doing so, will trigger callbacks in both user space and * kernel. Callbacks will triggered asynchronously and their order of execution * is not guaranteed. The status parameter will indicate whether the entity * performing the signaling wants to convey an error case or a success case. * * @param sync_obj: int referencing the sync object. * @param status: Status of the signaling. Can be either SYNC_SIGNAL_ERROR or * SYNC_SIGNAL_SUCCESS. * * @return Status of operation. Negative in case of error. Zero otherwise. */ int cam_sync_signal(int32_t sync_obj, uint32_t status); /** * @brief: Merges multiple sync objects * * This function will merge multiple sync objects into a sync group. * * @param sync_obj: pointer to a block of ints to be merged * @param num_objs: Number of ints in the block * * @return Status of operation. Negative in case of error. Zero otherwise. */ int cam_sync_merge(int32_t *sync_obj, uint32_t num_objs, int32_t *merged_obj); /** * @brief: Destroys a sync object * * @param sync_obj: int referencing the sync object to be destroyed * * @return Status of operation. Negative in case of error. Zero otherwise. */ int cam_sync_destroy(int32_t sync_obj); /** * @brief: Waits for a sync object synchronously * * Does a wait on the sync object identified by sync_obj for a maximum * of timeout_ms milliseconds. Must not be called from interrupt context as * this API can sleep. Should be called from process context only. * * @param sync_obj: int referencing the sync object to be waited upon * @timeout_ms sync_obj: Timeout in ms. * * @return 0 upon success, -EINVAL if sync object is in bad state or arguments * are invalid, -ETIMEDOUT if wait times out. */ int cam_sync_wait(int32_t sync_obj, uint64_t timeout_ms); #endif /* __CAM_SYNC_API_H__ */ drivers/media/platform/msm/camera/cam_sync/cam_sync_private.h 0 → 100644 +186 −0 Original line number Diff line number Diff line /* Copyright (c) 2017, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifndef __CAM_SYNC_PRIVATE_H__ #define __CAM_SYNC_PRIVATE_H__ #include <linux/bitmap.h> #include <linux/videodev2.h> #include <linux/workqueue.h> #include <linux/interrupt.h> #include <media/v4l2-fh.h> #include <media/v4l2-device.h> #include <media/v4l2-subdev.h> #include <media/v4l2-event.h> #include <media/v4l2-ioctl.h> #ifdef CONFIG_CAM_SYNC_DBG #define CDBG(fmt, args...) pr_err(fmt, ##args) #else #define CDBG(fmt, args...) pr_debug(fmt, ##args) #endif #define CAM_SYNC_OBJ_NAME_LEN 64 #define CAM_SYNC_MAX_OBJS 1024 #define CAM_SYNC_MAX_V4L2_EVENTS 50 #define CAM_SYNC_DEBUG_FILENAME "cam_debug" #define CAM_SYNC_DEBUG_BASEDIR "cam" #define CAM_SYNC_DEBUG_BUF_SIZE 32 #define CAM_SYNC_PAYLOAD_WORDS 2 #define CAM_SYNC_NAME "cam_sync" #define CAM_SYNC_WORKQUEUE_NAME "HIPRIO_SYNC_WORK_QUEUE" #define CAM_SYNC_TYPE_INDV 0 #define CAM_SYNC_TYPE_GROUP 1 /** * enum sync_type - Enum to indicate the type of sync object, * i.e. individual or group. * * @SYNC_TYPE_INDV : Object is an individual sync object * @SYNC_TYPE_GROUP : Object is a group sync object */ enum sync_type { SYNC_TYPE_INDV, SYNC_TYPE_GROUP }; /** * struct sync_parent_info - Single node of information about a parent * of a sync object, usually part of the parents linked list * * @sync_id : Sync object id of parent * @list : List member used to append this node to a linked list */ struct sync_parent_info { int32_t sync_id; struct list_head list; }; /** * struct sync_parent_info - Single node of information about a child * of a sync object, usually part of the children linked list * * @sync_id : Sync object id of child * @list : List member used to append this node to a linked list */ struct sync_child_info { int32_t sync_id; struct list_head list; }; /** * struct sync_callback_info - Single node of information about a kernel * callback registered on a sync object * * @callback_func : Callback function, registered by client driver * @cb_data : Callback data, registered by client driver * @status........ : Status with which callback will be invoked in client * @sync_obj : Sync id of the object for which callback is registered * @cb_dispatch_work : Work representing the call dispatch * @list : List member used to append this node to a linked list */ struct sync_callback_info { sync_callback callback_func; void *cb_data; int status; int32_t sync_obj; struct work_struct cb_dispatch_work; struct list_head list; }; /** * struct sync_user_payload - Single node of information about a user space * payload registered from user space * * @payload_data : Payload data, opaque to kernel * @list : List member used to append this node to a linked list */ struct sync_user_payload { uint64_t payload_data[CAM_SYNC_PAYLOAD_WORDS]; struct list_head list; }; /** * struct sync_table_row - Single row of information about a sync object, used * for internal book keeping in the sync driver * * @name : Optional string representation of the sync object * @type : Type of the sync object (individual or group) * @sync_id : Integer id representing this sync object * @parents_list : Linked list of parents of this sync object * @children_list : Linked list of children of this sync object * @state : State (INVALID, ACTIVE, SIGNALED_SUCCESS or * SIGNALED_ERROR) * @remaining : Count of remaining children that not been signaled * @signaled : Completion variable on which block calls will wait * @callback_list : Linked list of kernel callbacks registered * @user_payload_list : LInked list of user space payloads registered */ struct sync_table_row { char name[CAM_SYNC_OBJ_NAME_LEN]; enum sync_type type; int32_t sync_id; /* List of parents, which are merged objects */ struct list_head parents_list; /* List of children, which constitute the merged object */ struct list_head children_list; uint32_t state; uint32_t remaining; struct completion signaled; struct list_head callback_list; struct list_head user_payload_list; }; /** * struct cam_signalable_info - Information for a single sync object that is * ready to be signaled * * @sync_obj : Sync object id of signalable object * @status : Status with which to signal * @list : List member used to append this node to a linked list */ struct cam_signalable_info { int32_t sync_obj; uint32_t status; struct list_head list; }; /** * struct sync_device - Internal struct to book keep sync driver details * * @vdev : Video device * @v4l2_dev : V4L2 device * @sync_table : Table of all sync objects * @row_spinlocks : Spinlock array, one for each row in the table * @table_lock : Mutex used to lock the table * @open_cnt : Count of file open calls made on the sync driver * @work_queue : Work queue used for dispatching kernel callbacks * @cam_sync_eventq : Event queue used to dispatch user payloads to user space * @bitmap : Bitmap representation of all sync objects */ struct sync_device { struct video_device *vdev; struct v4l2_device v4l2_dev; struct sync_table_row sync_table[CAM_SYNC_MAX_OBJS]; spinlock_t row_spinlocks[CAM_SYNC_MAX_OBJS]; struct mutex table_lock; int open_cnt; struct workqueue_struct *work_queue; struct v4l2_fh *cam_sync_eventq; spinlock_t cam_sync_eventq_lock; DECLARE_BITMAP(bitmap, CAM_SYNC_MAX_OBJS); }; #endif /* __CAM_SYNC_PRIVATE_H__ */ Loading
drivers/media/platform/msm/camera/Makefile +1 −2 Original line number Diff line number Diff line ccflags-y += -Idrivers/media/platform/msm/camera/cam_req_mgr obj-$(CONFIG_SPECTRA_CAMERA) += cam_req_mgr/ obj-$(CONFIG_SPECTRA_CAMERA) += cam_utils/ obj-$(CONFIG_SPECTRA_CAMERA) += cam_core/ obj-$(CONFIG_SPECTRA_CAMERA) += cam_sync/
drivers/media/platform/msm/camera/cam_sync/Makefile 0 → 100644 +1 −0 Original line number Diff line number Diff line obj-$(CONFIG_SPECTRA_CAMERA) += cam_sync.o cam_sync_util.o
drivers/media/platform/msm/camera/cam_sync/cam_sync.c 0 → 100644 +1024 −0 File added.Preview size limit exceeded, changes collapsed. Show changes
drivers/media/platform/msm/camera/cam_sync/cam_sync_api.h 0 → 100644 +128 −0 Original line number Diff line number Diff line /* Copyright (c) 2017, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifndef __CAM_SYNC_API_H__ #define __CAM_SYNC_API_H__ #include <linux/mutex.h> #include <linux/list.h> #include <linux/completion.h> #include <linux/videodev2.h> #include <uapi/media/cam_sync.h> #define SYNC_DEBUG_NAME_LEN 63 typedef void (*sync_callback)(int32_t sync_obj, int status, void *data); /* Kernel APIs */ /** * @brief: Creates a sync object * * The newly created sync obj is assigned to sync_obj. * sync object. * * @param sync_obj : Pointer to int referencing the sync object. * @param name : Optional parameter associating a name with the sync object for * debug purposes. Only first SYNC_DEBUG_NAME_LEN bytes are accepted, * rest will be ignored. * * @return Status of operation. Zero in case of success. * -EINVAL will be returned if sync_obj is an invalid pointer. * -ENOMEM will be returned if the kernel can't allocate space for * sync object. */ int cam_sync_create(int32_t *sync_obj, const char *name); /** * @brief: Registers a callback with a sync object * * @param cb_func: Pointer to callback to be registered * @param userdata: Opaque pointer which will be passed back with callback. * @param sync_obj: int referencing the sync object. * * @return Status of operation. Zero in case of success. * -EINVAL will be returned if userdata is invalid. * -ENOMEM will be returned if cb_func is invalid. * */ int cam_sync_register_callback(sync_callback cb_func, void *userdata, int32_t sync_obj); /** * @brief: De-registers a callback with a sync object * * @param cb_func: Pointer to callback to be de-registered * @param userdata: Opaque pointer which will be passed back with callback. * @param sync_obj: int referencing the sync object. * * @return Status of operation. Zero in case of success. * -EINVAL will be returned if userdata is invalid. * -ENOMEM will be returned if cb_func is invalid. */ int cam_sync_deregister_callback(sync_callback cb_func, void *userdata, int32_t sync_obj); /** * @brief: Signals a sync object with the status argument. * * This function will signal the sync object referenced by the sync_obj * parameter and when doing so, will trigger callbacks in both user space and * kernel. Callbacks will triggered asynchronously and their order of execution * is not guaranteed. The status parameter will indicate whether the entity * performing the signaling wants to convey an error case or a success case. * * @param sync_obj: int referencing the sync object. * @param status: Status of the signaling. Can be either SYNC_SIGNAL_ERROR or * SYNC_SIGNAL_SUCCESS. * * @return Status of operation. Negative in case of error. Zero otherwise. */ int cam_sync_signal(int32_t sync_obj, uint32_t status); /** * @brief: Merges multiple sync objects * * This function will merge multiple sync objects into a sync group. * * @param sync_obj: pointer to a block of ints to be merged * @param num_objs: Number of ints in the block * * @return Status of operation. Negative in case of error. Zero otherwise. */ int cam_sync_merge(int32_t *sync_obj, uint32_t num_objs, int32_t *merged_obj); /** * @brief: Destroys a sync object * * @param sync_obj: int referencing the sync object to be destroyed * * @return Status of operation. Negative in case of error. Zero otherwise. */ int cam_sync_destroy(int32_t sync_obj); /** * @brief: Waits for a sync object synchronously * * Does a wait on the sync object identified by sync_obj for a maximum * of timeout_ms milliseconds. Must not be called from interrupt context as * this API can sleep. Should be called from process context only. * * @param sync_obj: int referencing the sync object to be waited upon * @timeout_ms sync_obj: Timeout in ms. * * @return 0 upon success, -EINVAL if sync object is in bad state or arguments * are invalid, -ETIMEDOUT if wait times out. */ int cam_sync_wait(int32_t sync_obj, uint64_t timeout_ms); #endif /* __CAM_SYNC_API_H__ */
drivers/media/platform/msm/camera/cam_sync/cam_sync_private.h 0 → 100644 +186 −0 Original line number Diff line number Diff line /* Copyright (c) 2017, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifndef __CAM_SYNC_PRIVATE_H__ #define __CAM_SYNC_PRIVATE_H__ #include <linux/bitmap.h> #include <linux/videodev2.h> #include <linux/workqueue.h> #include <linux/interrupt.h> #include <media/v4l2-fh.h> #include <media/v4l2-device.h> #include <media/v4l2-subdev.h> #include <media/v4l2-event.h> #include <media/v4l2-ioctl.h> #ifdef CONFIG_CAM_SYNC_DBG #define CDBG(fmt, args...) pr_err(fmt, ##args) #else #define CDBG(fmt, args...) pr_debug(fmt, ##args) #endif #define CAM_SYNC_OBJ_NAME_LEN 64 #define CAM_SYNC_MAX_OBJS 1024 #define CAM_SYNC_MAX_V4L2_EVENTS 50 #define CAM_SYNC_DEBUG_FILENAME "cam_debug" #define CAM_SYNC_DEBUG_BASEDIR "cam" #define CAM_SYNC_DEBUG_BUF_SIZE 32 #define CAM_SYNC_PAYLOAD_WORDS 2 #define CAM_SYNC_NAME "cam_sync" #define CAM_SYNC_WORKQUEUE_NAME "HIPRIO_SYNC_WORK_QUEUE" #define CAM_SYNC_TYPE_INDV 0 #define CAM_SYNC_TYPE_GROUP 1 /** * enum sync_type - Enum to indicate the type of sync object, * i.e. individual or group. * * @SYNC_TYPE_INDV : Object is an individual sync object * @SYNC_TYPE_GROUP : Object is a group sync object */ enum sync_type { SYNC_TYPE_INDV, SYNC_TYPE_GROUP }; /** * struct sync_parent_info - Single node of information about a parent * of a sync object, usually part of the parents linked list * * @sync_id : Sync object id of parent * @list : List member used to append this node to a linked list */ struct sync_parent_info { int32_t sync_id; struct list_head list; }; /** * struct sync_parent_info - Single node of information about a child * of a sync object, usually part of the children linked list * * @sync_id : Sync object id of child * @list : List member used to append this node to a linked list */ struct sync_child_info { int32_t sync_id; struct list_head list; }; /** * struct sync_callback_info - Single node of information about a kernel * callback registered on a sync object * * @callback_func : Callback function, registered by client driver * @cb_data : Callback data, registered by client driver * @status........ : Status with which callback will be invoked in client * @sync_obj : Sync id of the object for which callback is registered * @cb_dispatch_work : Work representing the call dispatch * @list : List member used to append this node to a linked list */ struct sync_callback_info { sync_callback callback_func; void *cb_data; int status; int32_t sync_obj; struct work_struct cb_dispatch_work; struct list_head list; }; /** * struct sync_user_payload - Single node of information about a user space * payload registered from user space * * @payload_data : Payload data, opaque to kernel * @list : List member used to append this node to a linked list */ struct sync_user_payload { uint64_t payload_data[CAM_SYNC_PAYLOAD_WORDS]; struct list_head list; }; /** * struct sync_table_row - Single row of information about a sync object, used * for internal book keeping in the sync driver * * @name : Optional string representation of the sync object * @type : Type of the sync object (individual or group) * @sync_id : Integer id representing this sync object * @parents_list : Linked list of parents of this sync object * @children_list : Linked list of children of this sync object * @state : State (INVALID, ACTIVE, SIGNALED_SUCCESS or * SIGNALED_ERROR) * @remaining : Count of remaining children that not been signaled * @signaled : Completion variable on which block calls will wait * @callback_list : Linked list of kernel callbacks registered * @user_payload_list : LInked list of user space payloads registered */ struct sync_table_row { char name[CAM_SYNC_OBJ_NAME_LEN]; enum sync_type type; int32_t sync_id; /* List of parents, which are merged objects */ struct list_head parents_list; /* List of children, which constitute the merged object */ struct list_head children_list; uint32_t state; uint32_t remaining; struct completion signaled; struct list_head callback_list; struct list_head user_payload_list; }; /** * struct cam_signalable_info - Information for a single sync object that is * ready to be signaled * * @sync_obj : Sync object id of signalable object * @status : Status with which to signal * @list : List member used to append this node to a linked list */ struct cam_signalable_info { int32_t sync_obj; uint32_t status; struct list_head list; }; /** * struct sync_device - Internal struct to book keep sync driver details * * @vdev : Video device * @v4l2_dev : V4L2 device * @sync_table : Table of all sync objects * @row_spinlocks : Spinlock array, one for each row in the table * @table_lock : Mutex used to lock the table * @open_cnt : Count of file open calls made on the sync driver * @work_queue : Work queue used for dispatching kernel callbacks * @cam_sync_eventq : Event queue used to dispatch user payloads to user space * @bitmap : Bitmap representation of all sync objects */ struct sync_device { struct video_device *vdev; struct v4l2_device v4l2_dev; struct sync_table_row sync_table[CAM_SYNC_MAX_OBJS]; spinlock_t row_spinlocks[CAM_SYNC_MAX_OBJS]; struct mutex table_lock; int open_cnt; struct workqueue_struct *work_queue; struct v4l2_fh *cam_sync_eventq; spinlock_t cam_sync_eventq_lock; DECLARE_BITMAP(bitmap, CAM_SYNC_MAX_OBJS); }; #endif /* __CAM_SYNC_PRIVATE_H__ */
