M7350/kernel/drivers/media/platform/msm/camera_v2/msm.h

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2024-09-09 08:52:07 +00:00
/* Copyright (c) 2012-2013, 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 _MSM_H
#define _MSM_H
#include <linux/version.h>
#include <linux/i2c.h>
#include <linux/videodev2.h>
#include <linux/pm_qos.h>
#include <linux/wakelock.h>
#include <linux/msm_ion.h>
#include <linux/iommu.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fh.h>
#include <media/v4l2-event.h>
#include <media/v4l2-mediabus.h>
#include <media/videobuf2-dma-contig.h>
#include <media/videobuf2-msm-mem.h>
#include <media/msmb_camera.h>
#define MSM_POST_EVT_TIMEOUT 5000
#define MSM_POST_EVT_NOTIMEOUT 0xFFFFFFFF
struct msm_video_device {
struct video_device *vdev;
atomic_t opened;
};
struct msm_queue_head {
struct list_head list;
spinlock_t lock;
int len;
int max;
};
/** msm_event:
*
* event sent by imaging server
**/
struct msm_event {
struct video_device *vdev;
atomic_t on_heap;
};
struct msm_command {
struct list_head list;
struct v4l2_event event;
atomic_t on_heap;
};
/** struct msm_command_ack
*
* Object of command_ack_q, which is
* created per open operation
*
* contains struct msm_command
**/
struct msm_command_ack {
struct list_head list;
struct msm_queue_head command_q;
wait_queue_head_t wait;
int stream_id;
};
struct msm_v4l2_subdev {
/* FIXME: for session close and error handling such
* as daemon shutdown */
int close_sequence;
};
struct msm_session {
struct list_head list;
/* session index */
unsigned int session_id;
/* event queue sent by imaging server */
struct msm_event event_q;
/* ACK by imaging server. Object type of
* struct msm_command_ack per open,
* assumption is application can send
* command on every opened video node */
struct msm_queue_head command_ack_q;
/* real streams(either data or metadate) owned by one
* session struct msm_stream */
struct msm_queue_head stream_q;
struct mutex lock;
};
int msm_post_event(struct v4l2_event *event, int timeout);
int msm_create_session(unsigned int session, struct video_device *vdev);
int msm_destroy_session(unsigned int session_id);
int msm_create_stream(unsigned int session_id,
unsigned int stream_id, struct vb2_queue *q);
void msm_delete_stream(unsigned int session_id, unsigned int stream_id);
int msm_create_command_ack_q(unsigned int session_id, unsigned int stream_id);
void msm_delete_command_ack_q(unsigned int session_id, unsigned int stream_id);
struct msm_stream *msm_get_stream(unsigned int session_id,
unsigned int stream_id);
struct vb2_queue *msm_get_stream_vb2q(unsigned int session_id,
unsigned int stream_id);
struct msm_stream *msm_get_stream_from_vb2q(struct vb2_queue *q);
struct msm_session *msm_session_find(unsigned int session_id);
#endif /*_MSM_H */