media: camss: Add VFE files

/*

 * camss-vfe.h

 *

 * Qualcomm MSM Camera Subsystem - VFE Module

 *

 * Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.

 * Copyright (C) 2015-2017 Linaro Ltd.

 *

 * 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 QC_MSM_CAMSS_VFE_H

#define QC_MSM_CAMSS_VFE_H

#include <linux/clk.h>

#include <linux/spinlock_types.h>

#include <media/media-entity.h>

#include <media/v4l2-device.h>

#include <media/v4l2-subdev.h>

#include "camss-video.h"

#define MSM_VFE_PAD_SINK 0

#define MSM_VFE_PAD_SRC 1

#define MSM_VFE_PADS_NUM 2

#define MSM_VFE_LINE_NUM 3

#define MSM_VFE_IMAGE_MASTERS_NUM 7

#define MSM_VFE_VFE0_UB_SIZE 1023

#define MSM_VFE_VFE0_UB_SIZE_RDI (MSM_VFE_VFE0_UB_SIZE / 3)

#define MSM_VFE_VFE1_UB_SIZE 1535

#define MSM_VFE_VFE1_UB_SIZE_RDI (MSM_VFE_VFE1_UB_SIZE / 3)

enum vfe_output_state {

	VFE_OUTPUT_OFF,

	VFE_OUTPUT_RESERVED,

	VFE_OUTPUT_SINGLE,

	VFE_OUTPUT_CONTINUOUS,

	VFE_OUTPUT_IDLE,

	VFE_OUTPUT_STOPPING

};

enum vfe_line_id {

	VFE_LINE_NONE = -1,

	VFE_LINE_RDI0 = 0,

	VFE_LINE_RDI1 = 1,

	VFE_LINE_RDI2 = 2

};

struct vfe_output {

	u8 wm_idx;

	int active_buf;

	struct camss_buffer *buf[2];

	struct camss_buffer *last_buffer;

	struct list_head pending_bufs;

	unsigned int drop_update_idx;

	enum vfe_output_state state;

	unsigned int sequence;

};

struct vfe_line {

	enum vfe_line_id id;

	struct v4l2_subdev subdev;

	struct media_pad pads[MSM_VFE_PADS_NUM];

	struct v4l2_mbus_framefmt fmt[MSM_VFE_PADS_NUM];

	struct camss_video video_out;

	struct vfe_output output;

};

struct vfe_device {

	u8 id;

	void __iomem *base;

	u32 irq;

	char irq_name[30];

	struct clk **clock;

	int nclocks;

	struct completion reset_complete;

	struct completion halt_complete;

	struct mutex power_lock;

	int power_count;

	struct mutex stream_lock;

	int stream_count;

	spinlock_t output_lock;

	enum vfe_line_id wm_output_map[MSM_VFE_IMAGE_MASTERS_NUM];

	struct vfe_line line[MSM_VFE_LINE_NUM];

	u32 reg_update;

	u8 was_streaming;

};

struct resources;

int msm_vfe_subdev_init(struct vfe_device *vfe, const struct resources *res);

int msm_vfe_register_entities(struct vfe_device *vfe,

			      struct v4l2_device *v4l2_dev);

void msm_vfe_unregister_entities(struct vfe_device *vfe);

void msm_vfe_get_vfe_id(struct media_entity *entity, u8 *id);

void msm_vfe_get_vfe_line_id(struct media_entity *entity, enum vfe_line_id *id);

void msm_vfe_stop_streaming(struct vfe_device *vfe);

#endif /* QC_MSM_CAMSS_VFE_H */