/****************************************************************************
*
* Filename: cpia2.h
*
* Copyright 2001, STMicrolectronics, Inc.
*
* Contact: steve.miller@st.com
*
* Description:
* This is a USB driver for CPiA2 based video cameras.
*
* This driver is modelled on the cpia usb driver by
* Jochen Scharrlach and Johannes Erdfeldt.
*
* 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 __CPIA2_H__
#define __CPIA2_H__
#include <linux/videodev2.h>
#include <linux/usb.h>
#include <linux/poll.h>
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include "cpia2_registers.h"
/* define for verbose debug output */
//#define _CPIA2_DEBUG_
/***
* Image defines
***/
/* Misc constants */
#define ALLOW_CORRUPT 0 /* Causes collater to discard checksum */
/* USB Transfer mode */
#define XFER_ISOC 0
#define XFER_BULK 1
/* USB Alternates */
#define USBIF_CMDONLY 0
#define USBIF_BULK 1
#define USBIF_ISO_1 2 /* 128 bytes/ms */
#define USBIF_ISO_2 3 /* 384 bytes/ms */
#define USBIF_ISO_3 4 /* 640 bytes/ms */
#define USBIF_ISO_4 5 /* 768 bytes/ms */
#define USBIF_ISO_5 6 /* 896 bytes/ms */
#define USBIF_ISO_6 7 /* 1023 bytes/ms */
/* Flicker Modes */
#define NEVER_FLICKER 0
#define FLICKER_60 60
#define FLICKER_50 50
/* Debug flags */
#define DEBUG_NONE 0
#define DEBUG_REG 0x00000001
#define DEBUG_DUMP_PATCH 0x00000002
#define DEBUG_DUMP_REGS 0x00000004
/***
* Video frame sizes
***/
enum {
VIDEOSIZE_VGA = 0, /* 640x480 */
VIDEOSIZE_CIF, /* 352x288 */
VIDEOSIZE_QVGA, /* 320x240 */
VIDEOSIZE_QCIF, /* 176x144 */
VIDEOSIZE_288_216,
VIDEOSIZE_256_192,
VIDEOSIZE_224_168,
VIDEOSIZE_192_144,
};
#define STV_IMAGE_CIF_ROWS 288
#define STV_IMAGE_CIF_COLS 352
#define STV_IMAGE_QCIF_ROWS 144
#define STV_IMAGE_QCIF_COLS 176
#define STV_IMAGE_VGA_ROWS 480
#define STV_IMAGE_VGA_COLS 640
#define STV_IMAGE_QVGA_ROWS 240
#define STV_IMAGE_QVGA_COLS 320
#define JPEG_MARKER_COM (1<<6) /* Comment segment */
/***
* Enums
***/
/* Sensor types available with cpia2 asics */
enum sensors {
CPIA2_SENSOR_410,
CPIA2_SENSOR_500
};
/* Asic types available in the CPiA2 architecture */
#define CPIA2_ASIC_672 0x67
/* Device types (stv672, stv676, etc) */
#define DEVICE_STV_672 0x0001
#define DEVICE_STV_676 0x0002
enum frame_status {
FRAME_EMPTY,
FRAME_READING, /* In the process of being grabbed into */
FRAME_READY, /* Ready to be read */
FRAME_ERROR,
};
/***
* Register access (for USB request byte)
***/
enum {
CAMERAACCESS_SYSTEM = 0,
CAMERAACCESS_VC,
CAMERAACCESS_VP,
CAMERAACCESS_IDATA
};
#define CAMERAACCESS_TYPE_BLOCK 0x00
#define CAMERAACCESS_TYPE_RANDOM 0x04
#define CAMERAACCESS_TYPE_MASK 0x08
#define CAMERAACCESS_TYPE_REPEAT 0x0C
#define TRANSFER_READ 0
#define TRANSFER_WRITE 1
#define DEFAULT_ALT USBIF_ISO_6
#define DEFAULT_BRIGHTNESS 0x46
#define DEFAULT_CONTRAST 0x93
#define DEFAULT_SATURATION 0x7f
/* Power state */
#define HI_POWER_MODE CPIA2_SYSTEM_CONTROL_HIGH_POWER
#define LO_POWER_MODE CPIA2_SYSTEM_CONTROL_LOW_POWER
/********
* Commands
*******/
enum {
CPIA2_CMD_NONE = 0,
CPIA2_CMD_GET_VERSION,
CPIA2_CMD_GET_PNP_ID,
CPIA2_CMD_GET_ASIC_TYPE,
CPIA2_CMD_GET_SENSOR,
CPIA2_CMD_GET_VP_DEVICE,
CPIA2_CMD_GET_VP_BRIGHTNESS,
CPIA2_CMD_SET_VP_BRIGHTNESS,
CPIA2_CMD_GET_CONTRAST,
CPIA2_CMD_SET_CONTRAST,
CPIA2_CMD_GET_VP_SATURATION,
CPIA2_CMD_SET_VP_SATURATION,
CPIA2_CMD_GET_VP_GPIO_DIRECTION,
CPIA2_CMD_SET_VP_GPIO_DIRECTION,
CPIA2_CMD_GET_VP_GPIO_DATA,
CPIA2_CMD_SET_VP_GPIO_DATA,
CPIA2_CMD_GET_VC_MP_GPIO_DIRECTION,
CPIA2_CMD_SET_VC_MP_GPIO_DIRECTION,
CPIA2_CMD_GET_VC_MP_GPIO_DATA,
CPIA2_CMD_SET_VC_MP_GPIO_DATA,
CPIA2_CMD_ENABLE_PACKET_CTRL,
CPIA2_CMD_GET_FLICKER_MODES,
CPIA2_CMD_SET_FLICKER_MODES,
CPIA2_CMD_RESET_FIFO, /* clear fifo and enable stream block */
CPIA2_CMD_SET_HI_POWER,
CPIA2_CMD_SET_LOW_POWER,
CPIA2_CMD_CLEAR_V2W_ERR,
CPIA2_CMD_SET_USER_MODE,
CPIA2_CMD_GET_USER_MODE,
CPIA2_CMD_FRAMERATE_REQ,
CPIA2_CMD_SET_COMPRESSION_STATE,
CPIA2_CMD_GET_WAKEUP,
CPIA2_CMD_SET_WAKEUP,
CPIA2_CMD_GET_PW_CONTROL,
CPIA2_CMD_SET_PW_CONTROL,
CPIA2_CMD_GET_SYSTEM_CTRL,
CPIA2_CMD_SET_SYSTEM_CTRL,
CPIA2_CMD_GET_VP_SYSTEM_STATE,
CPIA2_CMD_GET_VP_SYSTEM_CTRL,
CPIA2_CMD_SET_VP_SYSTEM_CTRL,
CPIA2_CMD_GET_VP_EXP_MODES,
CPIA2_CMD_SET_VP_EXP_MODES,
CPIA2_CMD_GET_DEVICE_CONFIG,
CPIA2_CMD_SET_DEVICE_CONFIG,
CPIA2_CMD_SET_SERIAL_ADDR,
CPIA2_CMD_SET_SENSOR_CR1,
CPIA2_CMD_GET_VC_CONTROL,
CPIA2_CMD_SET_VC_CONTROL,
CPIA2_CMD_SET_TARGET_KB,
CPIA2_CMD_SET_DEF_JPEG_OPT,
CPIA2_CMD_REHASH_VP4,
CPIA2_CMD_GET_USER_EFFECTS,
CPIA2_CMD_SET_USER_EFFECTS
};
enum user_cmd {
COMMAND_NONE = 0x00000001,
COMMAND_SET_FPS = 0x00000002,
COMMAND_SET_COLOR_PARAMS = 0x00000004,
COMMAND_GET_COLOR_PARAMS = 0x00000008,
COMMAND_SET_FORMAT = 0x00000010, /* size, etc */
COMMAND_SET_FLICKER = 0x00000020
};
/***
* Some defines specific to the 676 chip
***/
#define CAMACC_CIF 0x01
#define CAMACC_VGA 0x02
#define CAMACC_QCIF 0x04
#define CAMACC_QVGA 0x08
struct cpia2_register {
u8 index;
u8 value;
};
struct cpia2_reg_mask {
u8 index;
u8 and_mask;
u8 or_mask;
u8 fill;
};
struct cpia2_command {
u32 command;
u8 req_mode; /* (Block or random) | registerBank */
u8 reg_count;
u8 direction;
u8 start;
union reg_types {
struct cpia2_register registers[32];
struct cpia2_reg_mask masks[16];
u8 block_data[64];
u8 *patch_data; /* points to function defined block */
} buffer;
};
struct camera_params {
struct {
u8 firmware_revision_hi; /* For system register set (bank 0) */
u8 firmware_revision_lo;
u8 asic_id; /* Video Compressor set (bank 1) */
u8 asic_rev;
u8 vp_device_hi; /* Video Processor set (bank 2) */
u8 vp_device_lo;
u8 sensor_flags;
u8 sensor_rev;
} version;
struct {
u32 device_type; /* enumerated from vendor/product ids.
* Currently, either STV_672 or STV_676 */
u16 vendor;
u16 product;
u16 device_revision;
} pnp_id;
struct {
u8 brightness; /* CPIA2_VP_EXPOSURE_TARGET */
u8 contrast; /* Note: this is CPIA2_VP_YRANGE */
u8 saturation; /* CPIA2_VP_SATURATION */
} color_params;
struct {
u8 cam_register;
u8 flicker_mode_req; /* 1 if flicker on, else never flicker */
} flicker_control;
struct {
u8 jpeg_options;
u8 creep_period;
u8 user_squeeze;
u8 inhibit_htables;
} compression;
struct {
u8 ohsize; /* output image size */
u8 ovsize;
u8 hcrop; /* cropping start_pos/4 */
u8 vcrop;
u8 hphase; /* scaling registers */
u8 vphase;
u8 hispan;
u8 vispan;
u8 hicrop;
u8 vicrop;
u8 hifraction;
u8 vifraction;
} image_size;
struct {
int width; /* actual window width */
int height; /* actual window height */
} roi;
struct {
u8 video_mode;
u8 frame_rate;
u8 video_size; /* Not a register, just a convenience for cropped sizes */
u8 gpio_direction;
u8 gpio_data;
u8 system_ctrl;
u8 system_state;
u8 lowlight_boost; /* Bool: 0 = off, 1 = on */
u8 device_config;
u8 exposure_modes;
u8 user_effects;
} vp_params;
struct {
u8 pw_control;
u8 wakeup;
u8 vc_control;
u8 vc_mp_direction;
u8 vc_mp_data;
u8 quality;
} vc_params;
struct {
u8 power_mode;
u8 system_ctrl;
u8 stream_mode; /* This is the current alternate for usb drivers */
u8 allow_corrupt;
} camera_state;
};
#define NUM_SBUF 2
struct cpia2_sbuf {
char *data;
struct urb *urb;
};
struct framebuf {
struct timeval timestamp;
unsigned long seq;
int num;
int length;
int max_length;
volatile enum frame_status status;
u8 *data;
struct framebuf *next;
};
struct camera_data {
/* locks */
struct v4l2_device v4l2_dev;
struct mutex v4l2_lock; /* serialize file operations */
struct v4l2_ctrl_handler hdl;
struct {
/* Lights control cluster */
struct v4l2_ctrl *top_light;
struct v4l2_ctrl *bottom_light;
};
struct v4l2_ctrl *usb_alt;
/* camera status */
int first_image_seen;
enum sensors sensor_type;
u8 flush;
struct v4l2_fh *stream_fh;
u8 mmapped;
int streaming; /* 0 = no, 1 = yes */
int xfer_mode; /* XFER_BULK or XFER_ISOC */
struct camera_params params; /* camera settings */
/* v4l */
int video_size; /* VIDEO_SIZE_ */
struct video_device vdev; /* v4l videodev */
u32 width;
u32 height; /* Its size */
__u32 pixelformat; /* Format fourcc */
/* USB */
struct usb_device *dev;
unsigned char iface;
unsigned int cur_alt;
unsigned int old_alt;
struct cpia2_sbuf sbuf[NUM_SBUF]; /* Double buffering */
wait_queue_head_t wq_stream;
/* Buffering */
u32 frame_size;
int num_frames;
unsigned long frame_count;
u8 *frame_buffer; /* frame buffer data */
struct framebuf *buffers;
struct framebuf * volatile curbuff;
struct framebuf *workbuff;
/* MJPEG Extension */
int APPn; /* Number of APP segment to be written, must be 0..15 */
int APP_len; /* Length of data in JPEG APPn segment */
char APP_data[60]; /* Data in the JPEG APPn segment. */
int COM_len; /* Length of data in JPEG COM segment */
char COM_data[60]; /* Data in JPEG COM segment */
};
/* v4l */
int cpia2_register_camera(struct camera_data *cam);
void cpia2_unregister_camera(struct camera_data *cam);
void cpia2_camera_release(struct v4l2_device *v4l2_dev);
/* core */
int cpia2_reset_camera(struct camera_data *cam);
int cpia2_set_low_power(struct camera_data *cam);
void cpia2_dbg_dump_registers(struct camera_data *cam);
int cpia2_match_video_size(int width, int height);
void cpia2_set_camera_state(struct camera_data *cam);
void cpia2_save_camera_state(struct camera_data *cam);
void cpia2_set_color_params(struct camera_data *cam);
void cpia2_set_brightness(struct camera_data *cam, unsigned char value);
void cpia2_set_contrast(struct camera_data *cam, unsigned char value);
void cpia2_set_saturation(struct camera_data *cam, unsigned char value);
int cpia2_set_flicker_mode(struct camera_data *cam, int mode);
void cpia2_set_format(struct camera_data *cam);
int cpia2_send_command(struct camera_data *cam, struct cpia2_command *cmd);
int cpia2_do_command(struct camera_data *cam,
unsigned int command,
unsigned char direction, unsigned char param);
struct camera_data *cpia2_init_camera_struct(struct usb_interface *intf);
int cpia2_init_camera(struct camera_data *cam);
int cpia2_allocate_buffers(struct camera_data *cam);
void cpia2_free_buffers(struct camera_data *cam);
long cpia2_read(struct camera_data *cam,
char __user *buf, unsigned long count, int noblock);
unsigned int cpia2_poll(struct camera_data *cam,
struct file *filp, poll_table *wait);
int cpia2_remap_buffer(struct camera_data *cam, struct vm_area_struct *vma);
void cpia2_set_property_flip(struct camera_data *cam, int prop_val);
void cpia2_set_property_mirror(struct camera_data *cam, int prop_val);
int cpia2_set_gpio(struct camera_data *cam, unsigned char setting);
int cpia2_set_fps(struct camera_data *cam, int framerate);
/* usb */
int cpia2_usb_init(void);
void cpia2_usb_cleanup(void);
int cpia2_usb_transfer_cmd(struct camera_data *cam, void *registers,
u8 request, u8 start, u8 count, u8 direction);
int cpia2_usb_stream_start(struct camera_data *cam, unsigned int alternate);
int cpia2_usb_stream_stop(struct camera_data *cam);
int cpia2_usb_stream_pause(struct camera_data *cam);
int cpia2_usb_stream_resume(struct camera_data *cam);
int cpia2_usb_change_streaming_alternate(struct camera_data *cam,
unsigned int alt);
/* ----------------------- debug functions ---------------------- */
#ifdef _CPIA2_DEBUG_
#define ALOG(lev, fmt, args...) printk(lev "%s:%d %s(): " fmt, __FILE__, __LINE__, __func__, ## args)
#define LOG(fmt, args...) ALOG(KERN_INFO, fmt, ## args)
#define ERR(fmt, args...) ALOG(KERN_ERR, fmt, ## args)
#define DBG(fmt, args...) ALOG(KERN_DEBUG, fmt, ## args)
#else
#define ALOG(fmt,args...) printk(fmt,##args)
#define LOG(fmt,args...) ALOG(KERN_INFO "cpia2: "fmt,##args)
#define ERR(fmt,args...) ALOG(KERN_ERR "cpia2: "fmt,##args)
#define DBG(fmn,args...) do {} while(0)
#endif
/* No function or lineno, for shorter lines */
#define KINFO(fmt, args...) printk(KERN_INFO fmt,##args)
#endif
