drivers/media/pci/ddbridge/ddbridge.h - third_party/linux - Git at Google

 /*
  * ddbridge.h: Digital Devices PCIe bridge driver
  *
  * Copyright (C) 2010-2017 Digital Devices GmbH
  *                         Ralph Metzler <rmetzler@digitaldevices.de>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 only, 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.
  *
  * To obtain the license, point your browser to
  * http://www.gnu.org/copyleft/gpl.html
  */

 #ifndef _DDBRIDGE_H_
 #define _DDBRIDGE_H_

 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/poll.h>
 #include <linux/io.h>
 #include <linux/pci.h>
 #include <linux/timer.h>
 #include <linux/i2c.h>
 #include <linux/swab.h>
 #include <linux/vmalloc.h>
 #include <linux/workqueue.h>
 #include <linux/kthread.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
 #include <linux/spi/spi.h>
 #include <linux/gpio.h>
 #include <linux/completion.h>

 #include <linux/types.h>
 #include <linux/sched.h>
 #include <linux/interrupt.h>
 #include <linux/mutex.h>
 #include <asm/dma.h>
 #include <asm/irq.h>
 #include <linux/io.h>
 #include <linux/uaccess.h>

 #include <linux/dvb/ca.h>
 #include <linux/socket.h>
 #include <linux/device.h>
 #include <linux/io.h>

 #include <media/dmxdev.h>
 #include <media/dvbdev.h>
 #include <media/dvb_demux.h>
 #include <media/dvb_frontend.h>
 #include <media/dvb_ringbuffer.h>
 #include <media/dvb_ca_en50221.h>
 #include <media/dvb_net.h>

 #define DDBRIDGE_VERSION "0.9.33-integrated"

 #define DDB_MAX_I2C    32
 #define DDB_MAX_PORT   32
 #define DDB_MAX_INPUT  64
 #define DDB_MAX_OUTPUT 32
 #define DDB_MAX_LINK    4
 #define DDB_LINK_SHIFT 28

 #define DDB_LINK_TAG(_x) (_x << DDB_LINK_SHIFT)

 struct ddb_regset {
 	u32 base;
 	u32 num;
 	u32 size;
 };

 struct ddb_regmap {
 	u32 irq_base_i2c;
 	u32 irq_base_idma;
 	u32 irq_base_odma;

 	const struct ddb_regset *i2c;
 	const struct ddb_regset *i2c_buf;
 	const struct ddb_regset *idma;
 	const struct ddb_regset *idma_buf;
 	const struct ddb_regset *odma;
 	const struct ddb_regset *odma_buf;

 	const struct ddb_regset *input;
 	const struct ddb_regset *output;

 	const struct ddb_regset *channel;
 };

 struct ddb_ids {
 	u16 vendor;
 	u16 device;
 	u16 subvendor;
 	u16 subdevice;

 	u32 hwid;
 	u32 regmapid;
 	u32 devid;
 	u32 mac;
 };

 struct ddb_info {
 	int   type;
 #define DDB_NONE            0
 #define DDB_OCTOPUS         1
 #define DDB_OCTOPUS_CI      2
 #define DDB_OCTOPUS_MAX     5
 #define DDB_OCTOPUS_MAX_CT  6
 #define DDB_OCTOPUS_MCI     9
 	char *name;
 	u32   i2c_mask;
 	u8    port_num;
 	u8    led_num;
 	u8    fan_num;
 	u8    temp_num;
 	u8    temp_bus;
 	u32   board_control;
 	u32   board_control_2;
 	u8    mdio_num;
 	u8    con_clock; /* use a continuous clock */
 	u8    ts_quirks;
 #define TS_QUIRK_SERIAL   1
 #define TS_QUIRK_REVERSED 2
 #define TS_QUIRK_ALT_OSC  8
 	u32   tempmon_irq;
 	u8    mci;
 	const struct ddb_regmap *regmap;
 };

 #define DMA_MAX_BUFS 32      /* hardware table limit */

 struct ddb;
 struct ddb_port;

 struct ddb_dma {
 	void                  *io;
 	u32                    regs;
 	u32                    bufregs;

 	dma_addr_t             pbuf[DMA_MAX_BUFS];
 	u8                    *vbuf[DMA_MAX_BUFS];
 	u32                    num;
 	u32                    size;
 	u32                    div;
 	u32                    bufval;

 	struct work_struct     work;
 	spinlock_t             lock; /* DMA lock */
 	wait_queue_head_t      wq;
 	int                    running;
 	u32                    stat;
 	u32                    ctrl;
 	u32                    cbuf;
 	u32                    coff;
 };

 struct ddb_dvb {
 	struct dvb_adapter    *adap;
 	int                    adap_registered;
 	struct dvb_device     *dev;
 	struct i2c_client     *i2c_client[1];
 	struct dvb_frontend   *fe;
 	struct dvb_frontend   *fe2;
 	struct dmxdev          dmxdev;
 	struct dvb_demux       demux;
 	struct dvb_net         dvbnet;
 	struct dmx_frontend    hw_frontend;
 	struct dmx_frontend    mem_frontend;
 	int                    users;
 	u32                    attached;
 	u8                     input;

 	enum fe_sec_tone_mode  tone;
 	enum fe_sec_voltage    voltage;

 	int (*i2c_gate_ctrl)(struct dvb_frontend *, int);
 	int (*set_voltage)(struct dvb_frontend *fe,
 			   enum fe_sec_voltage voltage);
 	int (*set_input)(struct dvb_frontend *fe, int input);
 	int (*diseqc_send_master_cmd)(struct dvb_frontend *fe,
 				      struct dvb_diseqc_master_cmd *cmd);
 };

 struct ddb_ci {
 	struct dvb_ca_en50221  en;
 	struct ddb_port       *port;
 	u32                    nr;
 };

 struct ddb_io {
 	struct ddb_port       *port;
 	u32                    nr;
 	u32                    regs;
 	struct ddb_dma        *dma;
 	struct ddb_io         *redo;
 	struct ddb_io         *redi;
 };

 #define ddb_output ddb_io
 #define ddb_input ddb_io

 struct ddb_i2c {
 	struct ddb            *dev;
 	u32                    nr;
 	u32                    regs;
 	u32                    link;
 	struct i2c_adapter     adap;
 	u32                    rbuf;
 	u32                    wbuf;
 	u32                    bsize;
 	struct completion      completion;
 };

 struct ddb_port {
 	struct ddb            *dev;
 	u32                    nr;
 	u32                    pnr;
 	u32                    regs;
 	u32                    lnr;
 	struct ddb_i2c        *i2c;
 	struct mutex           i2c_gate_lock; /* I2C access lock */
 	u32                    class;
 #define DDB_PORT_NONE           0
 #define DDB_PORT_CI             1
 #define DDB_PORT_TUNER          2
 #define DDB_PORT_LOOP           3
 	char                   *name;
 	char                   *type_name;
 	u32                     type;
 #define DDB_TUNER_DUMMY          0xffffffff
 #define DDB_TUNER_NONE           0
 #define DDB_TUNER_DVBS_ST        1
 #define DDB_TUNER_DVBS_ST_AA     2
 #define DDB_TUNER_DVBCT_TR       3
 #define DDB_TUNER_DVBCT_ST       4
 #define DDB_CI_INTERNAL          5
 #define DDB_CI_EXTERNAL_SONY     6
 #define DDB_TUNER_DVBCT2_SONY_P  7
 #define DDB_TUNER_DVBC2T2_SONY_P 8
 #define DDB_TUNER_ISDBT_SONY_P   9
 #define DDB_TUNER_DVBS_STV0910_P 10
 #define DDB_TUNER_MXL5XX         11
 #define DDB_CI_EXTERNAL_XO2      12
 #define DDB_CI_EXTERNAL_XO2_B    13
 #define DDB_TUNER_DVBS_STV0910_PR 14
 #define DDB_TUNER_DVBC2T2I_SONY_P 15
 #define DDB_TUNER_MCI            16

 #define DDB_TUNER_XO2            32
 #define DDB_TUNER_DVBS_STV0910   (DDB_TUNER_XO2 + 0)
 #define DDB_TUNER_DVBCT2_SONY    (DDB_TUNER_XO2 + 1)
 #define DDB_TUNER_ISDBT_SONY     (DDB_TUNER_XO2 + 2)
 #define DDB_TUNER_DVBC2T2_SONY   (DDB_TUNER_XO2 + 3)
 #define DDB_TUNER_ATSC_ST        (DDB_TUNER_XO2 + 4)
 #define DDB_TUNER_DVBC2T2I_SONY  (DDB_TUNER_XO2 + 5)

 	struct ddb_input      *input[2];
 	struct ddb_output     *output;
 	struct dvb_ca_en50221 *en;
 	u8                     en_freedata;
 	struct ddb_dvb         dvb[2];
 	u32                    gap;
 	u32                    obr;
 	u8                     creg;
 };

 #define CM_STARTUP_DELAY 2
 #define CM_AVERAGE  20
 #define CM_GAIN     10

 #define HW_LSB_SHIFT    12
 #define HW_LSB_MASK     0x1000

 #define CM_IDLE    0
 #define CM_STARTUP 1
 #define CM_ADJUST  2

 #define TS_CAPTURE_LEN  (4096)

 struct ddb_lnb {
 	struct mutex           lock; /* lock lnb access */
 	u32                    tone;
 	enum fe_sec_voltage    oldvoltage[4];
 	u32                    voltage[4];
 	u32                    voltages;
 	u32                    fmode;
 };

 struct ddb_irq {
 	void                   (*handler)(void *);
 	void                  *data;
 };

 struct ddb_link {
 	struct ddb            *dev;
 	const struct ddb_info *info;
 	u32                    nr;
 	u32                    regs;
 	spinlock_t             lock; /* lock link access */
 	struct mutex           flash_mutex; /* lock flash access */
 	struct ddb_lnb         lnb;
 	struct tasklet_struct  tasklet;
 	struct ddb_ids         ids;

 	spinlock_t             temp_lock; /* lock temp chip access */
 	int                    overtemperature_error;
 	u8                     temp_tab[11];
 	struct ddb_irq         irq[256];
 };

 struct ddb {
 	struct pci_dev          *pdev;
 	struct platform_device  *pfdev;
 	struct device           *dev;

 	int                      msi;
 	struct workqueue_struct *wq;
 	u32                      has_dma;

 	struct ddb_link          link[DDB_MAX_LINK];
 	unsigned char __iomem   *regs;
 	u32                      regs_len;
 	u32                      port_num;
 	struct ddb_port          port[DDB_MAX_PORT];
 	u32                      i2c_num;
 	struct ddb_i2c           i2c[DDB_MAX_I2C];
 	struct ddb_input         input[DDB_MAX_INPUT];
 	struct ddb_output        output[DDB_MAX_OUTPUT];
 	struct dvb_adapter       adap[DDB_MAX_INPUT];
 	struct ddb_dma           idma[DDB_MAX_INPUT];
 	struct ddb_dma           odma[DDB_MAX_OUTPUT];

 	struct device           *ddb_dev;
 	u32                      ddb_dev_users;
 	u32                      nr;
 	u8                       iobuf[1028];

 	u8                       leds;
 	u32                      ts_irq;
 	u32                      i2c_irq;

 	struct mutex             mutex; /* lock access to global ddb array */

 	u8                       tsbuf[TS_CAPTURE_LEN];
 };

 /****************************************************************************/
 /****************************************************************************/
 /****************************************************************************/

 int ddbridge_flashread(struct ddb *dev, u32 link, u8 *buf, u32 addr, u32 len);

 /****************************************************************************/

 /* ddbridge-core.c */
 struct ddb_irq *ddb_irq_set(struct ddb *dev, u32 link, u32 nr,
 			    void (*handler)(void *), void *data);
 void ddb_ports_detach(struct ddb *dev);
 void ddb_ports_release(struct ddb *dev);
 void ddb_buffers_free(struct ddb *dev);
 void ddb_device_destroy(struct ddb *dev);
 irqreturn_t ddb_irq_handler0(int irq, void *dev_id);
 irqreturn_t ddb_irq_handler1(int irq, void *dev_id);
 irqreturn_t ddb_irq_handler(int irq, void *dev_id);
 void ddb_ports_init(struct ddb *dev);
 int ddb_buffers_alloc(struct ddb *dev);
 int ddb_ports_attach(struct ddb *dev);
 int ddb_device_create(struct ddb *dev);
 int ddb_init(struct ddb *dev);
 void ddb_unmap(struct ddb *dev);
 int ddb_exit_ddbridge(int stage, int error);
 int ddb_init_ddbridge(void);

 #endif /* DDBRIDGE_H */
	/*
	* ddbridge.h: Digital Devices PCIe bridge driver
	*
	* Copyright (C) 2010-2017 Digital Devices GmbH
	* Ralph Metzler <rmetzler@digitaldevices.de>
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License
	* version 2 only, 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.
	*
	* To obtain the license, point your browser to
	* http://www.gnu.org/copyleft/gpl.html
	*/

	#ifndef _DDBRIDGE_H_
	#define _DDBRIDGE_H_

	#include <linux/module.h>
	#include <linux/init.h>
	#include <linux/interrupt.h>
	#include <linux/delay.h>
	#include <linux/slab.h>
	#include <linux/poll.h>
	#include <linux/io.h>
	#include <linux/pci.h>
	#include <linux/timer.h>
	#include <linux/i2c.h>
	#include <linux/swab.h>
	#include <linux/vmalloc.h>
	#include <linux/workqueue.h>
	#include <linux/kthread.h>
	#include <linux/platform_device.h>
	#include <linux/clk.h>
	#include <linux/spi/spi.h>
	#include <linux/gpio.h>
	#include <linux/completion.h>

	#include <linux/types.h>
	#include <linux/sched.h>
	#include <linux/interrupt.h>
	#include <linux/mutex.h>
	#include <asm/dma.h>
	#include <asm/irq.h>
	#include <linux/io.h>
	#include <linux/uaccess.h>

	#include <linux/dvb/ca.h>
	#include <linux/socket.h>
	#include <linux/device.h>
	#include <linux/io.h>

	#include <media/dmxdev.h>
	#include <media/dvbdev.h>
	#include <media/dvb_demux.h>
	#include <media/dvb_frontend.h>
	#include <media/dvb_ringbuffer.h>
	#include <media/dvb_ca_en50221.h>
	#include <media/dvb_net.h>

	#define DDBRIDGE_VERSION "0.9.33-integrated"

	#define DDB_MAX_I2C 32
	#define DDB_MAX_PORT 32
	#define DDB_MAX_INPUT 64
	#define DDB_MAX_OUTPUT 32
	#define DDB_MAX_LINK 4
	#define DDB_LINK_SHIFT 28

	#define DDB_LINK_TAG(_x) (_x << DDB_LINK_SHIFT)

	struct ddb_regset {
	u32 base;
	u32 num;
	u32 size;
	};

	struct ddb_regmap {
	u32 irq_base_i2c;
	u32 irq_base_idma;
	u32 irq_base_odma;

	const struct ddb_regset *i2c;
	const struct ddb_regset *i2c_buf;
	const struct ddb_regset *idma;
	const struct ddb_regset *idma_buf;
	const struct ddb_regset *odma;
	const struct ddb_regset *odma_buf;

	const struct ddb_regset *input;
	const struct ddb_regset *output;

	const struct ddb_regset *channel;
	};

	struct ddb_ids {
	u16 vendor;
	u16 device;
	u16 subvendor;
	u16 subdevice;

	u32 hwid;
	u32 regmapid;
	u32 devid;
	u32 mac;
	};

	struct ddb_info {
	int type;
	#define DDB_NONE 0
	#define DDB_OCTOPUS 1
	#define DDB_OCTOPUS_CI 2
	#define DDB_OCTOPUS_MAX 5
	#define DDB_OCTOPUS_MAX_CT 6
	#define DDB_OCTOPUS_MCI 9
	char *name;
	u32 i2c_mask;
	u8 port_num;
	u8 led_num;
	u8 fan_num;
	u8 temp_num;
	u8 temp_bus;
	u32 board_control;
	u32 board_control_2;
	u8 mdio_num;
	u8 con_clock; /* use a continuous clock */
	u8 ts_quirks;
	#define TS_QUIRK_SERIAL 1
	#define TS_QUIRK_REVERSED 2
	#define TS_QUIRK_ALT_OSC 8
	u32 tempmon_irq;
	u8 mci;
	const struct ddb_regmap *regmap;
	};

	#define DMA_MAX_BUFS 32 /* hardware table limit */

	struct ddb;
	struct ddb_port;

	struct ddb_dma {
	void *io;
	u32 regs;
	u32 bufregs;

	dma_addr_t pbuf[DMA_MAX_BUFS];
	u8 *vbuf[DMA_MAX_BUFS];
	u32 num;
	u32 size;
	u32 div;
	u32 bufval;

	struct work_struct work;
	spinlock_t lock; /* DMA lock */
	wait_queue_head_t wq;
	int running;
	u32 stat;
	u32 ctrl;
	u32 cbuf;
	u32 coff;
	};

	struct ddb_dvb {
	struct dvb_adapter *adap;
	int adap_registered;
	struct dvb_device *dev;
	struct i2c_client *i2c_client[1];
	struct dvb_frontend *fe;
	struct dvb_frontend *fe2;
	struct dmxdev dmxdev;
	struct dvb_demux demux;
	struct dvb_net dvbnet;
	struct dmx_frontend hw_frontend;
	struct dmx_frontend mem_frontend;
	int users;
	u32 attached;
	u8 input;

	enum fe_sec_tone_mode tone;
	enum fe_sec_voltage voltage;

	int (i2c_gate_ctrl)(struct dvb_frontend , int);
	int (set_voltage)(struct dvb_frontend fe,
	enum fe_sec_voltage voltage);
	int (set_input)(struct dvb_frontend fe, int input);
	int (diseqc_send_master_cmd)(struct dvb_frontend fe,
	struct dvb_diseqc_master_cmd *cmd);
	};

	struct ddb_ci {
	struct dvb_ca_en50221 en;
	struct ddb_port *port;
	u32 nr;
	};

	struct ddb_io {
	struct ddb_port *port;
	u32 nr;
	u32 regs;
	struct ddb_dma *dma;
	struct ddb_io *redo;
	struct ddb_io *redi;
	};

	#define ddb_output ddb_io
	#define ddb_input ddb_io

	struct ddb_i2c {
	struct ddb *dev;
	u32 nr;
	u32 regs;
	u32 link;
	struct i2c_adapter adap;
	u32 rbuf;
	u32 wbuf;
	u32 bsize;
	struct completion completion;
	};

	struct ddb_port {
	struct ddb *dev;
	u32 nr;
	u32 pnr;
	u32 regs;
	u32 lnr;
	struct ddb_i2c *i2c;
	struct mutex i2c_gate_lock; /* I2C access lock */
	u32 class;
	#define DDB_PORT_NONE 0
	#define DDB_PORT_CI 1
	#define DDB_PORT_TUNER 2
	#define DDB_PORT_LOOP 3
	char *name;
	char *type_name;
	u32 type;
	#define DDB_TUNER_DUMMY 0xffffffff
	#define DDB_TUNER_NONE 0
	#define DDB_TUNER_DVBS_ST 1
	#define DDB_TUNER_DVBS_ST_AA 2
	#define DDB_TUNER_DVBCT_TR 3
	#define DDB_TUNER_DVBCT_ST 4
	#define DDB_CI_INTERNAL 5
	#define DDB_CI_EXTERNAL_SONY 6
	#define DDB_TUNER_DVBCT2_SONY_P 7
	#define DDB_TUNER_DVBC2T2_SONY_P 8
	#define DDB_TUNER_ISDBT_SONY_P 9
	#define DDB_TUNER_DVBS_STV0910_P 10
	#define DDB_TUNER_MXL5XX 11
	#define DDB_CI_EXTERNAL_XO2 12
	#define DDB_CI_EXTERNAL_XO2_B 13
	#define DDB_TUNER_DVBS_STV0910_PR 14
	#define DDB_TUNER_DVBC2T2I_SONY_P 15
	#define DDB_TUNER_MCI 16

	#define DDB_TUNER_XO2 32
	#define DDB_TUNER_DVBS_STV0910 (DDB_TUNER_XO2 + 0)
	#define DDB_TUNER_DVBCT2_SONY (DDB_TUNER_XO2 + 1)
	#define DDB_TUNER_ISDBT_SONY (DDB_TUNER_XO2 + 2)
	#define DDB_TUNER_DVBC2T2_SONY (DDB_TUNER_XO2 + 3)
	#define DDB_TUNER_ATSC_ST (DDB_TUNER_XO2 + 4)
	#define DDB_TUNER_DVBC2T2I_SONY (DDB_TUNER_XO2 + 5)

	struct ddb_input *input[2];
	struct ddb_output *output;
	struct dvb_ca_en50221 *en;
	u8 en_freedata;
	struct ddb_dvb dvb[2];
	u32 gap;
	u32 obr;
	u8 creg;
	};

	#define CM_STARTUP_DELAY 2
	#define CM_AVERAGE 20
	#define CM_GAIN 10

	#define HW_LSB_SHIFT 12
	#define HW_LSB_MASK 0x1000

	#define CM_IDLE 0
	#define CM_STARTUP 1
	#define CM_ADJUST 2

	#define TS_CAPTURE_LEN (4096)

	struct ddb_lnb {
	struct mutex lock; /* lock lnb access */
	u32 tone;
	enum fe_sec_voltage oldvoltage[4];
	u32 voltage[4];
	u32 voltages;
	u32 fmode;
	};

	struct ddb_irq {
	void (handler)(void );
	void *data;
	};

	struct ddb_link {
	struct ddb *dev;
	const struct ddb_info *info;
	u32 nr;
	u32 regs;
	spinlock_t lock; /* lock link access */
	struct mutex flash_mutex; /* lock flash access */
	struct ddb_lnb lnb;
	struct tasklet_struct tasklet;
	struct ddb_ids ids;

	spinlock_t temp_lock; /* lock temp chip access */
	int overtemperature_error;
	u8 temp_tab[11];
	struct ddb_irq irq[256];
	};

	struct ddb {
	struct pci_dev *pdev;
	struct platform_device *pfdev;
	struct device *dev;

	int msi;
	struct workqueue_struct *wq;
	u32 has_dma;

	struct ddb_link link[DDB_MAX_LINK];
	unsigned char __iomem *regs;
	u32 regs_len;
	u32 port_num;
	struct ddb_port port[DDB_MAX_PORT];
	u32 i2c_num;
	struct ddb_i2c i2c[DDB_MAX_I2C];
	struct ddb_input input[DDB_MAX_INPUT];
	struct ddb_output output[DDB_MAX_OUTPUT];
	struct dvb_adapter adap[DDB_MAX_INPUT];
	struct ddb_dma idma[DDB_MAX_INPUT];
	struct ddb_dma odma[DDB_MAX_OUTPUT];

	struct device *ddb_dev;
	u32 ddb_dev_users;
	u32 nr;
	u8 iobuf[1028];

	u8 leds;
	u32 ts_irq;
	u32 i2c_irq;

	struct mutex mutex; /* lock access to global ddb array */

	u8 tsbuf[TS_CAPTURE_LEN];
	};

	/****************************************************************************/
	/****************************************************************************/
	/****************************************************************************/

	int ddbridge_flashread(struct ddb dev, u32 link, u8 buf, u32 addr, u32 len);

	/****************************************************************************/

	/* ddbridge-core.c */
	struct ddb_irq ddb_irq_set(struct ddb dev, u32 link, u32 nr,
	void (handler)(void ), void *data);
	void ddb_ports_detach(struct ddb *dev);
	void ddb_ports_release(struct ddb *dev);
	void ddb_buffers_free(struct ddb *dev);
	void ddb_device_destroy(struct ddb *dev);
	irqreturn_t ddb_irq_handler0(int irq, void *dev_id);
	irqreturn_t ddb_irq_handler1(int irq, void *dev_id);
	irqreturn_t ddb_irq_handler(int irq, void *dev_id);
	void ddb_ports_init(struct ddb *dev);
	int ddb_buffers_alloc(struct ddb *dev);
	int ddb_ports_attach(struct ddb *dev);
	int ddb_device_create(struct ddb *dev);
	int ddb_init(struct ddb *dev);
	void ddb_unmap(struct ddb *dev);
	int ddb_exit_ddbridge(int stage, int error);
	int ddb_init_ddbridge(void);

	#endif /* DDBRIDGE_H */