V4L/DVB (10954): Add cx231xx USB driver

Signed-off-by: Srinivasa Deevi <srinivasa.deevi@conexant.com>
[mchehab@redhat.com: Remove the Kconfig changes, to avoid git breakages]
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 762 insertions, 0 deletions

diff --git a/drivers/media/video/cx231xx/cx231xx.h b/drivers/media/video/cx231xx/cx231xx.h
new file mode 100644
index 00000000000..5fef87fbbce
--- /dev/null
+++ b/drivers/media/video/cx231xx/cx231xx.h
@@ -0,0 +1,762 @@
+/*
+   cx231xx.h - driver for Conexant Cx23100/101/102 USB video capture devices
+
+   Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
+        Based on em28xx driver
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   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.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _CX231XX_H
+#define _CX231XX_H
+
+#include <linux/videodev2.h>
+#include <media/videobuf-vmalloc.h>
+
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
+#include <linux/mutex.h>
+#include <media/ir-kbd-i2c.h>
+#if defined(CONFIG_VIDEO_CX231XX_DVB) || defined(CONFIG_VIDEO_CX231XX_DVB_MODULE)
+#include <media/videobuf-dvb.h>
+#endif
+
+#include "cx231xx-reg.h"
+#include "cx231xx-pcb-config.h"
+#include "cx231xx-conf-reg.h"
+
+#define CX231XX_VERSION_CODE            KERNEL_VERSION(0, 1, 0)
+#define DRIVER_NAME                     "cx231xx"
+#define PWR_SLEEP_INTERVAL              5
+
+/* I2C addresses for control block in Cx231xx */
+#define     Colibri_DEVICE_ADDRESS      0x60
+#define     Flatrion_DEVICE_ADDRESS     0x98
+#define     HAMMERHEAD_I2C_ADDRESS      0x88
+#define     DIF_USE_BASEBAND            0xFFFFFFFF
+
+/* Boards supported by driver */
+#define CX231XX_BOARD_UNKNOWN		    0
+#define CX231XX_BOARD_CNXT_RDE_250     	1
+#define CX231XX_BOARD_CNXT_RDU_250     	2
+
+/* Limits minimum and default number of buffers */
+#define CX231XX_MIN_BUF                 4
+#define CX231XX_DEF_BUF                 12
+#define CX231XX_DEF_VBI_BUF             6
+
+#define VBI_LINE_COUNT                  17
+#define VBI_LINE_LENGTH                 1440
+
+/*Limits the max URB message size */
+#define URB_MAX_CTRL_SIZE               80
+
+/* Params for validated field */
+#define CX231XX_BOARD_NOT_VALIDATED     1
+#define CX231XX_BOARD_VALIDATED	        0
+
+/* maximum number of cx231xx boards */
+#define CX231XX_MAXBOARDS               8
+
+/* maximum number of frames that can be queued */
+#define CX231XX_NUM_FRAMES              5
+
+/* number of buffers for isoc transfers */
+#define CX231XX_NUM_BUFS                8
+
+/* number of packets for each buffer
+   windows requests only 40 packets .. so we better do the same
+   this is what I found out for all alternate numbers there!
+ */
+#define CX231XX_NUM_PACKETS             40
+
+
+/* default alternate; 0 means choose the best */
+#define CX231XX_PINOUT                  0
+
+#define CX231XX_INTERLACED_DEFAULT      1
+
+
+/* time to wait when stopping the isoc transfer */
+#define CX231XX_URB_TIMEOUT             msecs_to_jiffies(CX231XX_NUM_BUFS * CX231XX_NUM_PACKETS)
+
+
+enum cx231xx_mode {
+	CX231XX_SUSPEND,
+	CX231XX_ANALOG_MODE,
+	CX231XX_DIGITAL_MODE,
+};
+
+enum cx231xx_std_mode {
+	CX231XX_TV_AIR = 0,
+	CX231XX_TV_CABLE
+};
+
+enum cx231xx_stream_state {
+	STREAM_OFF,
+	STREAM_INTERRUPT,
+	STREAM_ON,
+};
+
+struct cx231xx;
+
+struct cx231xx_usb_isoc_ctl {
+		/* max packet size of isoc transaction */
+	int				max_pkt_size;
+
+		/* number of allocated urbs */
+	int				num_bufs;
+
+		/* urb for isoc transfers */
+	struct urb			**urb;
+
+		/* transfer buffers for isoc transfer */
+	char				**transfer_buffer;
+
+		/* Last buffer command and region */
+	u8				cmd;
+	int				pos, size, pktsize;
+
+		/* Last field: ODD or EVEN? */
+	int				field;
+
+		/* Stores incomplete commands */
+	u32				tmp_buf;
+	int				tmp_buf_len;
+
+		/* Stores already requested buffers */
+	struct cx231xx_buffer    	*buf;
+
+		/* Stores the number of received fields */
+	int				nfields;
+
+		/* isoc urb callback */
+	int (*isoc_copy) (struct cx231xx *dev, struct urb *urb);
+
+};
+
+
+
+struct cx231xx_fmt {
+	char  *name;
+	u32   fourcc;          /* v4l2 format id */
+    int   depth;
+    int   reg;
+};
+
+/* buffer for one video frame */
+struct cx231xx_buffer {
+	/* common v4l buffer stuff -- must be first */
+	struct videobuf_buffer vb;
+
+	struct list_head frame;
+	int top_field;
+	int receiving;
+};
+
+struct cx231xx_dmaqueue {
+	struct list_head   active;
+	struct list_head   queued;
+
+	wait_queue_head_t  wq;
+
+	/* Counters to control buffer fill */
+	int                pos;
+    u8                 is_partial_line;
+    u8                 partial_buf[8];
+    u8                 last_sav;
+    int                current_field;
+    u32                bytes_left_in_line;
+    u32                lines_completed;
+    u8                 field1_done;
+    u32                lines_per_field;
+};
+
+
+/* inputs */
+
+#define MAX_CX231XX_INPUT               4
+
+enum cx231xx_itype {
+	CX231XX_VMUX_COMPOSITE1 = 1,
+	CX231XX_VMUX_SVIDEO,
+	CX231XX_VMUX_TELEVISION,
+    CX231XX_VMUX_CABLE,
+    CX231XX_RADIO,
+    CX231XX_VMUX_DVB,
+	CX231XX_VMUX_DEBUG
+};
+
+enum cx231xx_v_input {
+    CX231XX_VIN_1_1 = 0x1,
+    CX231XX_VIN_2_1,
+    CX231XX_VIN_3_1,
+    CX231XX_VIN_4_1,
+    CX231XX_VIN_1_2 = 0x01,
+    CX231XX_VIN_2_2,
+    CX231XX_VIN_3_2,
+    CX231XX_VIN_1_3 = 0x1,
+    CX231XX_VIN_2_3,
+    CX231XX_VIN_3_3,
+};
+
+/* cx231xx has two audio inputs: tuner and line in */
+enum cx231xx_amux {
+	/* This is the only entry for cx231xx tuner input */
+	CX231XX_AMUX_VIDEO,	    /* cx231xx tuner*/
+	CX231XX_AMUX_LINE_IN,	/* Line In */
+};
+
+struct cx231xx_reg_seq {
+	unsigned char bit;
+    unsigned char val;
+	int sleep;
+};
+
+struct cx231xx_input {
+	enum cx231xx_itype type;
+	unsigned int vmux;
+	enum cx231xx_amux amux;
+	struct cx231xx_reg_seq *gpio;
+};
+
+#define INPUT(nr) (&cx231xx_boards[dev->model].input[nr])
+
+enum cx231xx_decoder {
+	CX231XX_NODECODER,
+	CX231XX_AVDECODER
+};
+
+typedef enum _I2C_MASTER_PORT
+{
+     I2C_0 =0,
+     I2C_1 =1,
+     I2C_2 =2,
+     I2C_3 =3
+}CX231XX_I2C_MASTER_PORT;
+
+struct cx231xx_board {
+	char *name;
+	int vchannels;
+	int tuner_type;
+	int tuner_addr;
+    v4l2_std_id norm;	            /* tv norm */
+
+    /* demod related */
+    int demod_addr;
+    u8 demod_xfer_mode;  /* 0 - Serial; 1 - parallel */
+
+	/* GPIO Pins */
+	struct cx231xx_reg_seq *dvb_gpio;
+	struct cx231xx_reg_seq *suspend_gpio;
+	struct cx231xx_reg_seq *tuner_gpio;
+    u8 tuner_sif_gpio;
+    u8 tuner_scl_gpio;
+    u8 tuner_sda_gpio;
+
+    /* PIN ctrl */
+    u32 ctl_pin_status_mask;
+    u8  agc_analog_digital_select_gpio;
+    u32 gpio_pin_status_mask;
+
+    /* i2c masters */
+    u8 tuner_i2c_master;
+    u8 demod_i2c_master;
+
+	unsigned int max_range_640_480:1;
+	unsigned int has_dvb:1;
+	unsigned int valid:1;
+
+	unsigned char xclk, i2c_speed;
+
+	enum cx231xx_decoder decoder;
+
+	struct cx231xx_input       input[MAX_CX231XX_INPUT];
+	struct cx231xx_input	  radio;
+	IR_KEYTAB_TYPE            *ir_codes;
+};
+
+/* device states */
+enum cx231xx_dev_state {
+	DEV_INITIALIZED = 0x01,
+	DEV_DISCONNECTED = 0x02,
+	DEV_MISCONFIGURED = 0x04,
+};
+
+enum AFE_MODE
+{
+    AFE_MODE_LOW_IF,
+    AFE_MODE_BASEBAND,
+    AFE_MODE_EU_HI_IF,
+    AFE_MODE_US_HI_IF,
+    AFE_MODE_JAPAN_HI_IF
+};
+
+enum AUDIO_INPUT
+{
+    AUDIO_INPUT_MUTE,
+    AUDIO_INPUT_LINE,
+    AUDIO_INPUT_TUNER_TV,
+    AUDIO_INPUT_SPDIF,
+    AUDIO_INPUT_TUNER_FM
+};
+
+#define CX231XX_AUDIO_BUFS              5
+#define CX231XX_NUM_AUDIO_PACKETS       64
+#define CX231XX_CAPTURE_STREAM_EN       1
+#define CX231XX_STOP_AUDIO              0
+#define CX231XX_START_AUDIO             1
+
+
+/* cx231xx extensions */
+#define CX231XX_AUDIO                   0x10
+#define CX231XX_DVB                     0x20
+
+struct cx231xx_audio {
+	char name[50];
+	char *transfer_buffer[CX231XX_AUDIO_BUFS];
+	struct urb *urb[CX231XX_AUDIO_BUFS];
+	struct usb_device *udev;
+	unsigned int capture_transfer_done;
+	struct snd_pcm_substream   *capture_pcm_substream;
+
+	unsigned int hwptr_done_capture;
+	struct snd_card            *sndcard;
+
+	int users, shutdown;
+	enum cx231xx_stream_state capture_stream;
+	spinlock_t slock;
+
+    int alt;		                /* alternate */
+	int max_pkt_size;	            /* max packet size of isoc transaction */
+	int num_alt;		            /* Number of alternative settings */
+	unsigned int *alt_max_pkt_size;	/* array of wMaxPacketSize */
+    u16 end_point_addr;
+};
+
+struct cx231xx;
+
+struct cx231xx_fh {
+	struct cx231xx *dev;
+	unsigned int  stream_on:1;	    /* Locks streams */
+	int           radio;
+
+	struct videobuf_queue        vb_vidq;
+
+	enum v4l2_buf_type           type;
+};
+
+/**********************************************************************************/
+/* set/get i2c */
+#define I2C_SPEED_1M            0x0  /* 00--1Mb/s, 01-400kb/s, 10--100kb/s, 11--5Mb/s */
+#define I2C_SPEED_400K          0x1  /* 00--1Mb/s, 01-400kb/s, 10--100kb/s, 11--5Mb/s */
+#define I2C_SPEED_100K          0x2  /* 00--1Mb/s, 01-400kb/s, 10--100kb/s, 11--5Mb/s */
+#define I2C_SPEED_5M            0x3	 /* 00--1Mb/s, 01-400kb/s, 10--100kb/s, 11--5Mb/s */
+
+#define I2C_STOP                0x0  /* 0-- STOP transaction */
+#define I2C_NOSTOP              0x1  /* 1-- do not transmit STOP at end of transaction */
+#define I2C_SYNC                0x1  /* 1--alllow slave to insert clock wait states */
+
+struct cx231xx_i2c {
+	struct cx231xx             *dev;
+
+	int                        nr;
+
+	/* i2c i/o */
+	struct i2c_adapter         i2c_adap;
+	struct i2c_algo_bit_data   i2c_algo;
+	struct i2c_client          i2c_client;
+	u32                        i2c_rc;
+
+	/* different settings for each bus */
+	u8                         i2c_period;
+    u8                         i2c_nostop;
+    u8                         i2c_reserve;
+};
+
+struct cx231xx_i2c_xfer_data{
+    u8                  dev_addr;
+    u8                  direction; /* 1 - IN, 0 - OUT */
+    u8                  saddr_len; /* sub address len */
+    u16                 saddr_dat; /* sub addr data */
+    u8                  buf_size;  /* buffer size */
+    u8*                 p_buffer;  /* pointer to the buffer */
+};
+
+typedef struct _VENDOR_REQUEST_IN
+{
+	u8					bRequest;
+	u16					wValue;
+	u16					wIndex;
+	u16					wLength;
+	u8					direction;
+	u8					bData;
+	u8					*pBuff;
+} VENDOR_REQUEST_IN, *PVENDOR_REQUEST_IN;
+
+struct cx231xx_ctrl {
+	struct v4l2_queryctrl v;
+	u32                   off;
+	u32                   reg;
+	u32                   mask;
+	u32                   shift;
+};
+
+typedef enum{
+    Raw_Video = 0,
+    Audio,
+    Vbi,        /* VANC */
+    Sliced_cc,  /* HANC */
+    TS1_serial_mode,
+    TS2,
+    TS1_parallel_mode
+}TRANSFER_TYPE;
+
+struct cx231xx_video_mode {
+    /* Isoc control struct */
+	struct cx231xx_dmaqueue vidq;
+	struct cx231xx_usb_isoc_ctl isoc_ctl;
+	spinlock_t slock;
+
+	/* usb transfer */
+	int alt;		                /* alternate */
+	int max_pkt_size;	            /* max packet size of isoc transaction */
+	int num_alt;		            /* Number of alternative settings */
+	unsigned int *alt_max_pkt_size;	/* array of wMaxPacketSize */
+    u16 end_point_addr;
+};
+
+
+/* main device struct */
+struct cx231xx {
+	/* generic device properties */
+	char name[30];		            /* name (including minor) of the device */
+	int model;		                /* index in the device_data struct */
+	int devno;		                /* marks the number of this device */
+
+	struct cx231xx_board board;
+
+	unsigned int stream_on:1;	    /* Locks streams */
+    unsigned int vbi_stream_on:1;	/* Locks streams for VBI */
+	unsigned int has_audio_class:1;
+	unsigned int has_alsa_audio:1;
+
+    struct cx231xx_fmt *format;
+
+	struct cx231xx_IR *ir;
+
+	struct list_head	devlist;
+
+	int tuner_type;		            /* type of the tuner */
+	int tuner_addr;		            /* tuner address */
+
+    /* I2C adapters: Master 1 & 2 (External) & Master 3 (Internal only) */
+	struct cx231xx_i2c         i2c_bus[3];
+    unsigned int xc_fw_load_done:1;
+    struct mutex gpio_i2c_lock;
+
+	/* video for linux */
+	int users;		                /* user count for exclusive use */
+	struct video_device *vdev;	    /* video for linux device struct */
+	v4l2_std_id norm;	            /* selected tv norm */
+	int ctl_freq;		            /* selected frequency */
+	unsigned int ctl_ainput;        /* selected audio input */
+	int mute;
+	int volume;
+
+	/* frame properties */
+	int width;		                /* current frame width */
+	int height;		                /* current frame height */
+	unsigned hscale;	            /* horizontal scale factor (see datasheet) */
+	unsigned vscale;	            /* vertical scale factor (see datasheet) */
+	int interlaced;		            /* 1=interlace fileds, 0=just top fileds */
+
+	struct cx231xx_audio adev;
+
+	/* states */
+	enum cx231xx_dev_state state;
+
+	struct work_struct         request_module_wk;
+
+	/* locks */
+	struct mutex lock;
+	struct mutex ctrl_urb_lock;	    /* protects urb_buf */
+	struct list_head inqueue, outqueue;
+	wait_queue_head_t open, wait_frame, wait_stream;
+	struct video_device *vbi_dev;
+	struct video_device *radio_dev;
+
+	unsigned char eedata[256];
+
+    struct cx231xx_video_mode video_mode;
+    struct cx231xx_video_mode vbi_mode;
+    struct cx231xx_video_mode sliced_cc_mode;
+    struct cx231xx_video_mode ts1_mode;
+
+    struct usb_device *udev;	    /* the usb device */
+    char urb_buf[URB_MAX_CTRL_SIZE];/* urb control msg buffer */
+
+
+	/* helper funcs that call usb_control_msg */
+    int (*cx231xx_read_ctrl_reg) (struct cx231xx *dev, u8 req, u16 reg,
+					char *buf, int len);
+    int (*cx231xx_write_ctrl_reg)(struct cx231xx *dev, u8 req, u16 reg,
+				      char *buf, int len);
+    int (*cx231xx_send_usb_command)(struct cx231xx_i2c *i2c_bus,
+                   struct cx231xx_i2c_xfer_data *req_data);
+    int (*cx231xx_gpio_i2c_read)(struct cx231xx *dev, u8 dev_addr, u8 *buf ,u8 len);
+    int (*cx231xx_gpio_i2c_write)(struct cx231xx *dev, u8 dev_addr, u8 *buf ,u8 len);
+
+	int (*cx231xx_set_analog_freq)(struct cx231xx *dev, u32 freq ) ;
+    int (*cx231xx_reset_analog_tuner)(struct cx231xx *dev) ;
+
+	enum cx231xx_mode mode;
+
+	struct cx231xx_dvb *dvb;
+
+    /* Cx231xx supported PCB config's */
+    struct pcb_config  current_pcb_config;
+    u8 current_scenario_idx;
+    u8 interface_count;
+    u8 max_iad_interface_count;
+
+    /* GPIO related register direction and values */
+    u32 gpio_dir;
+    u32 gpio_val;
+
+    /* Power Modes */
+    int power_mode;
+
+    /* colibri parameters */
+    enum AFE_MODE colibri_mode;
+    u32 colibri_ref_count;
+
+    /* video related parameters */
+    u32 video_input;
+    u32 active_mode;
+    u8  vbi_or_sliced_cc_mode;          /* 0 - vbi ; 1 - sliced cc mode */
+    enum cx231xx_std_mode std_mode;     /* 0 - Air; 1 - cable */
+
+};
+
+struct cx231xx_ops {
+	struct list_head next;
+	char *name;
+	int id;
+	int (*init)(struct cx231xx *);
+	int (*fini)(struct cx231xx *);
+};
+
+/* call back functions in dvb module */
+int cx231xx_set_analog_freq(struct cx231xx *dev, u32 freq ) ;
+int cx231xx_reset_analog_tuner(struct cx231xx *dev) ;
+
+/* Provided by cx231xx-i2c.c */
+void cx231xx_i2c_call_clients(struct cx231xx_i2c *bus, unsigned int cmd, void *arg);
+void cx231xx_do_i2c_scan(struct cx231xx *dev, struct i2c_client *c);
+int cx231xx_i2c_register(struct cx231xx_i2c *bus);
+int cx231xx_i2c_unregister(struct cx231xx_i2c *bus);
+
+/* Internal block control functions */
+int cx231xx_read_i2c_data(struct cx231xx *dev, u8 dev_addr,
+                          u16 saddr, u8 saddr_len, u32 *data, u8 data_len);
+int cx231xx_write_i2c_data(struct cx231xx *dev, u8 dev_addr,
+                          u16 saddr, u8 saddr_len, u32 data, u8 data_len);
+int cx231xx_reg_mask_write(struct cx231xx *dev, u8 dev_addr, u8 size, u16 register_address,
+                           u8 bit_start,u8 bit_end, u32 value);
+int cx231xx_read_modify_write_i2c_dword(struct cx231xx *dev, u8 dev_addr,
+                                       u16 saddr, u32 mask, u32 value);
+u32 cx231xx_set_field(u32 field_mask, u32 data);
+
+/* Colibri related functions */
+int cx231xx_colibri_init_super_block(struct cx231xx *dev, u32 ref_count);
+int cx231xx_colibri_init_channels(struct cx231xx *dev);
+int cx231xx_colibri_setup_AFE_for_baseband(struct cx231xx *dev);
+int cx231xx_colibri_set_input_mux(struct cx231xx *dev, u32 input_mux);
+int cx231xx_colibri_set_mode(struct cx231xx *dev, enum AFE_MODE mode);
+int cx231xx_colibri_update_power_control(struct cx231xx *dev, AV_MODE avmode);
+int cx231xx_colibri_adjust_ref_count(struct cx231xx *dev, u32 video_input);
+
+/* flatiron related functions */
+int cx231xx_flatiron_initialize(struct cx231xx *dev);
+int cx231xx_flatiron_update_power_control(struct cx231xx *dev, AV_MODE avmode);
+int cx231xx_flatiron_set_audio_input(struct cx231xx *dev, u8 audio_input);
+
+/* DIF related functions */
+int cx231xx_dif_configure_C2HH_for_low_IF(struct cx231xx *dev, u32 mode,
+                                          u32 function_mode, u32 standard);
+int cx231xx_dif_set_standard(struct cx231xx *dev, u32 standard);
+int cx231xx_tuner_pre_channel_change(struct cx231xx *dev);
+int cx231xx_tuner_post_channel_change(struct cx231xx *dev);
+
+/* video parser functions */
+u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used);
+u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf, u32 *p_bytes_used);
+int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
+                    u8 *p_buffer, u32 bytes_to_copy);
+void cx231xx_reset_video_buffer(struct cx231xx *dev, struct cx231xx_dmaqueue  *dma_q);
+u8 cx231xx_is_buffer_done(struct cx231xx *dev,struct cx231xx_dmaqueue  *dma_q);
+u32 cx231xx_copy_video_line(struct cx231xx *dev, struct cx231xx_dmaqueue  *dma_q,
+                            u8 *p_line, u32 length, int field_number);
+u32 cx231xx_get_video_line(struct cx231xx *dev, struct cx231xx_dmaqueue  *dma_q,
+                           u8 sav_eav, u8 *p_buffer, u32 buffer_size);
+void cx231xx_swab(u16 *from, u16 *to, u16 len);
+
+/* Provided by cx231xx-core.c */
+
+u32 cx231xx_request_buffers(struct cx231xx *dev, u32 count);
+void cx231xx_queue_unusedframes(struct cx231xx *dev);
+void cx231xx_release_buffers(struct cx231xx *dev);
+
+/* read from control pipe */
+int cx231xx_read_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg,
+			    char *buf, int len);
+
+/* write to control pipe */
+int cx231xx_write_ctrl_reg(struct cx231xx *dev, u8 req, u16 reg,
+				      char *buf, int len);
+int cx231xx_mode_register(struct cx231xx *dev, u16 address, u32 mode);
+
+int cx231xx_send_vendor_cmd(struct cx231xx *dev, VENDOR_REQUEST_IN *ven_req);
+int cx231xx_send_usb_command(struct cx231xx_i2c *i2c_bus,
+                   struct cx231xx_i2c_xfer_data *req_data);
+
+/* Gpio related functions */
+int cx231xx_send_gpio_cmd(struct cx231xx *dev, u32 gpio_bit, u8* gpio_val,
+                          u8 len, u8 request, u8 direction);
+int cx231xx_set_gpio_bit(struct cx231xx *dev, u32 gpio_bit, u8* gpio_val);
+int cx231xx_get_gpio_bit(struct cx231xx *dev, u32 gpio_bit, u8* gpio_val);
+int cx231xx_set_gpio_value(struct cx231xx *dev, int pin_number, int pin_value);
+int cx231xx_set_gpio_direction(struct cx231xx *dev, int pin_number, int pin_value);
+
+int cx231xx_gpio_i2c_start(struct cx231xx *dev);
+int cx231xx_gpio_i2c_end(struct cx231xx *dev);
+int cx231xx_gpio_i2c_write_byte(struct cx231xx *dev, u8 data);
+int cx231xx_gpio_i2c_read_byte(struct cx231xx *dev, u8 *buf);
+int cx231xx_gpio_i2c_read_ack(struct cx231xx *dev);
+int cx231xx_gpio_i2c_write_ack(struct cx231xx *dev);
+int cx231xx_gpio_i2c_write_nak(struct cx231xx *dev);
+
+int cx231xx_gpio_i2c_read(struct cx231xx *dev, u8 dev_addr, u8 *buf ,u8 len);
+int cx231xx_gpio_i2c_write(struct cx231xx *dev, u8 dev_addr, u8 *buf ,u8 len);
+
+/* audio related functions */
+int cx231xx_set_audio_decoder_input(struct cx231xx *dev, enum AUDIO_INPUT audio_input);
+
+int cx231xx_capture_start(struct cx231xx *dev, int start, u8 media_type);
+int cx231xx_resolution_set(struct cx231xx *dev);
+int cx231xx_set_video_alternate(struct cx231xx *dev);
+int cx231xx_set_alt_setting(struct cx231xx *dev, u8 index, u8 alt);
+int cx231xx_init_isoc(struct cx231xx *dev, int max_packets,
+		     int num_bufs, int max_pkt_size,
+		     int (*isoc_copy) (struct cx231xx *dev, struct urb *urb));
+void cx231xx_uninit_isoc(struct cx231xx *dev);
+int cx231xx_set_mode(struct cx231xx *dev, enum cx231xx_mode set_mode);
+int cx231xx_gpio_set(struct cx231xx *dev, struct cx231xx_reg_seq *gpio);
+
+/* Device list functions */
+void cx231xx_release_resources(struct cx231xx *dev);
+void cx231xx_release_analog_resources(struct cx231xx *dev);
+int cx231xx_register_analog_devices(struct cx231xx *dev);
+void cx231xx_remove_from_devlist(struct cx231xx *dev);
+void cx231xx_add_into_devlist(struct cx231xx *dev);
+struct cx231xx *cx231xx_get_device(int minor,
+				 enum v4l2_buf_type *fh_type, int *has_radio);
+void cx231xx_init_extension(struct cx231xx *dev);
+void cx231xx_close_extension(struct cx231xx *dev);
+
+/* hardware init functions */
+int cx231xx_dev_init(struct cx231xx *dev);
+void cx231xx_dev_uninit(struct cx231xx *dev);
+void cx231xx_config_i2c(struct cx231xx *dev);
+int cx231xx_config(struct cx231xx *dev);
+
+/* Stream control functions */
+int cx231xx_start_stream(struct cx231xx *dev, u32 ep_mask);
+int cx231xx_stop_stream(struct cx231xx *dev, u32 ep_mask);
+
+int cx231xx_initialize_stream_xfer(struct cx231xx *dev, u32 media_type);
+
+/* Power control functions */
+int cx231xx_set_power_mode(struct cx231xx *dev, AV_MODE mode);
+int cx231xx_power_suspend(struct cx231xx *dev);
+
+/* chip specific control functions */
+int cx231xx_init_ctrl_pin_status(struct cx231xx *dev);
+int cx231xx_set_agc_analog_digital_mux_select(struct cx231xx *dev, u8 analog_or_digital);
+int cx231xx_enable_i2c_for_tuner(struct cx231xx *dev, u8 I2CIndex);
+
+/* video audio decoder related functions */
+void video_mux(struct cx231xx *dev, int index);
+int cx231xx_set_video_input_mux(struct cx231xx *dev, u8 input);
+int cx231xx_set_decoder_video_input(struct cx231xx *dev, u8 pin_type, u8 input);
+int cx231xx_do_mode_ctrl_overrides(struct cx231xx *dev);
+int cx231xx_set_audio_input(struct cx231xx *dev, u8 input);
+void get_scale(struct cx231xx *dev,
+			unsigned int width, unsigned int height,
+			unsigned int *hscale, unsigned int *vscale);
+
+/* Provided by cx231xx-video.c */
+int cx231xx_register_extension(struct cx231xx_ops *dev);
+void cx231xx_unregister_extension(struct cx231xx_ops *dev);
+void cx231xx_init_extension(struct cx231xx *dev);
+void cx231xx_close_extension(struct cx231xx *dev);
+
+/* Provided by cx231xx-cards.c */
+extern void cx231xx_pre_card_setup(struct cx231xx *dev);
+extern void cx231xx_card_setup(struct cx231xx *dev);
+extern struct cx231xx_board cx231xx_boards[];
+extern struct usb_device_id cx231xx_id_table[];
+extern const unsigned int cx231xx_bcount;
+void cx231xx_set_ir(struct cx231xx *dev, struct IR_i2c *ir);
+int cx231xx_tuner_callback(void *ptr, int component, int command, int arg);
+
+/* Provided by cx231xx-input.c */
+int cx231xx_ir_init(struct cx231xx *dev);
+int cx231xx_ir_fini(struct cx231xx *dev);
+
+/* printk macros */
+
+#define cx231xx_err(fmt, arg...) do {\
+	printk(KERN_ERR fmt , ##arg); } while (0)
+
+#define cx231xx_errdev(fmt, arg...) do {\
+	printk(KERN_ERR "%s: "fmt,\
+			dev->name , ##arg); } while (0)
+
+#define cx231xx_info(fmt, arg...) do {\
+	printk(KERN_INFO "%s: "fmt,\
+			dev->name , ##arg); } while (0)
+#define cx231xx_warn(fmt, arg...) do {\
+	printk(KERN_WARNING "%s: "fmt,\
+			dev->name , ##arg); } while (0)
+
+
+static inline unsigned int norm_maxw(struct cx231xx *dev)
+{
+	if (dev->board.max_range_640_480)
+		return 640;
+	else
+		return 720;
+}
+
+static inline unsigned int norm_maxh(struct cx231xx *dev)
+{
+	if (dev->board.max_range_640_480)
+		return 480;
+	else
+		return (dev->norm & V4L2_STD_625_50) ? 576 : 480;
+}
+#endif