120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
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/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _MSM_H
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#define _MSM_H
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#include <linux/version.h>
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#include <linux/i2c.h>
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#include <linux/videodev2.h>
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#include <linux/pm_qos.h>
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#include <linux/wakelock.h>
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#include <linux/msm_ion.h>
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#include <linux/iommu.h>
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#include <media/v4l2-dev.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-fh.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-mediabus.h>
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#include <media/videobuf2-dma-contig.h>
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#include <media/videobuf2-msm-mem.h>
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#include <media/msmb_camera.h>
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#define MSM_POST_EVT_TIMEOUT 5000
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#define MSM_POST_EVT_NOTIMEOUT 0xFFFFFFFF
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struct msm_video_device {
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struct video_device *vdev;
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atomic_t opened;
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};
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struct msm_queue_head {
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struct list_head list;
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spinlock_t lock;
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int len;
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int max;
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};
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/** msm_event:
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*
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* event sent by imaging server
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**/
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struct msm_event {
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struct video_device *vdev;
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atomic_t on_heap;
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};
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struct msm_command {
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struct list_head list;
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struct v4l2_event event;
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atomic_t on_heap;
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};
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/** struct msm_command_ack
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*
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* Object of command_ack_q, which is
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* created per open operation
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*
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* contains struct msm_command
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**/
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struct msm_command_ack {
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struct list_head list;
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struct msm_queue_head command_q;
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wait_queue_head_t wait;
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int stream_id;
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};
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struct msm_v4l2_subdev {
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/* FIXME: for session close and error handling such
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* as daemon shutdown */
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int close_sequence;
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};
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struct msm_session {
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struct list_head list;
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/* session index */
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unsigned int session_id;
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/* event queue sent by imaging server */
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struct msm_event event_q;
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/* ACK by imaging server. Object type of
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* struct msm_command_ack per open,
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* assumption is application can send
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* command on every opened video node */
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struct msm_queue_head command_ack_q;
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/* real streams(either data or metadate) owned by one
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* session struct msm_stream */
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struct msm_queue_head stream_q;
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struct mutex lock;
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};
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int msm_post_event(struct v4l2_event *event, int timeout);
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int msm_create_session(unsigned int session, struct video_device *vdev);
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int msm_destroy_session(unsigned int session_id);
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int msm_create_stream(unsigned int session_id,
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unsigned int stream_id, struct vb2_queue *q);
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void msm_delete_stream(unsigned int session_id, unsigned int stream_id);
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int msm_create_command_ack_q(unsigned int session_id, unsigned int stream_id);
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void msm_delete_command_ack_q(unsigned int session_id, unsigned int stream_id);
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struct msm_stream *msm_get_stream(unsigned int session_id,
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unsigned int stream_id);
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struct vb2_queue *msm_get_stream_vb2q(unsigned int session_id,
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unsigned int stream_id);
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struct msm_stream *msm_get_stream_from_vb2q(struct vb2_queue *q);
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struct msm_session *msm_session_find(unsigned int session_id);
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#endif /*_MSM_H */
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