Release 4.7 drivers/staging/media/tw686x-kh/tw686x-kh.h

/*
 * Copyright (C) 2015 Industrial Research Institute for Automation
 * and Measurements PIAP
 *
 * Written by Krzysztof Ha?asa.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License
 * as published by the Free Software Foundation.
 */

#include <linux/delay.h>
#include <linux/freezer.h>
#include <linux/interrupt.h>
#include <linux/kthread.h>
#include <linux/mutex.h>
#include <linux/pci.h>
#include <media/videobuf2-dma-sg.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>


#define TYPE_MAX_CHANNELS 0x0F

#define TYPE_SECOND_GEN   0x10


struct tw686x_format {
	
char *name;
	
unsigned int fourcc;
	
unsigned int depth;
	
unsigned int mode;
};


struct dma_desc {
	
dma_addr_t phys;
	
void *virt;
	
unsigned int size;
};


struct vdma_desc {
	
__le32 flags_length;	/* 3 MSBits for flags, 13 LSBits for length */
	
__le32 phys;
};


struct tw686x_vb2_buf {
	
struct vb2_v4l2_buffer vb;
	
struct list_head list;
};


struct tw686x_video_channel {
	
struct tw686x_dev *dev;

	
struct vb2_queue vidq;
	
struct list_head vidq_queued;
	
struct video_device *device;
	
struct dma_desc sg_tables[2];
	
struct tw686x_vb2_buf *curr_bufs[2];
	
void *alloc_ctx;
	
struct vdma_desc *sg_descs[2];

	
struct v4l2_ctrl_handler ctrl_handler;
	
const struct tw686x_format *format;
	
struct mutex vb_mutex;
	
spinlock_t qlock;
	
v4l2_std_id video_standard;
	

unsigned int width, height;
	
enum v4l2_field field; /* supported TOP, BOTTOM, SEQ_TB and SEQ_BT */
	
unsigned int seq;	       /* video field or frame counter */
	
unsigned int ch;
};

/* global device status */

struct tw686x_dev {
	
spinlock_t irq_lock;

	
struct v4l2_device v4l2_dev;
	
struct snd_card *card;	/* sound card */

	
unsigned int video_active;	/* active video channel mask */

	
char name[32];
	
unsigned int type;
	
struct pci_dev *pci_dev;
	
__u32 __iomem *mmio;

	
struct task_struct *video_thread;
	
wait_queue_head_t video_thread_wait;
	
u32 dma_requests;

	
struct tw686x_video_channel video_channels[0];
};



static inline uint32_t reg_read(struct tw686x_dev *dev, unsigned int reg)
{
	return readl(dev->mmio + reg);
}

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static inline void reg_write(struct tw686x_dev *dev, unsigned int reg,
			     uint32_t value)
{
	writel(value, dev->mmio + reg);
}

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static inline unsigned int max_channels(struct tw686x_dev *dev)
{
	return dev->type & TYPE_MAX_CHANNELS; /* 4 or 8 channels */
}

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static inline unsigned int is_second_gen(struct tw686x_dev *dev)
{
	/* each channel has its own DMA SG table */
	return dev->type & TYPE_SECOND_GEN;
}

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int tw686x_kh_video_irq(struct tw686x_dev *dev);
int tw686x_kh_video_init(struct tw686x_dev *dev);
void tw686x_kh_video_free(struct tw686x_dev *dev);
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Directory: drivers/staging/media/tw686x-kh

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