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linux-stable/drivers/media/video/ov511.h
Mauro Carvalho Chehab 163fe744c3 V4L/DVB (11966): ov511: Fix unit_video parameter behavior 
Fix a regression caused by changeset 9133:64aed7485a43 - v4l: disconnect
kernel number from minor

Before the above changeset, ov511_probe used to allow forcing to use a
certain specific set of video devices, like:

modprobe ov511 unit_video=4,1,3 num_uv=3

So, assuming that you have 5 ov511 devices, and connect they one by one,
they'll gain the following device numbers (at the connection order):
/dev/video4
/dev/video1
/dev/video3
/dev/video0
/dev/video2

However, this was changed due to this change at video_register_device():

+ nr = find_next_zero_bit(video_nums[type], minor_cnt, nr == -1 ? 0 : nr);

With the previous behavior, a trial to register on an already allocated mirror
would fail, and a loop would get the next requested minor. However, the current
behavior is to get the next available minor instead of failing. Due to that,
this means that the above modprobe parameter will give, instead:

/dev/video5
/dev/video6
/dev/video7
/dev/video8
/dev/video9

In order to restore the original behavior, a static var were added,
storing the amount of already registered devices.

While there, it also fixes the locking of the probe/disconnect functions.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-06-16 19:07:40 -03:00

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#ifndef __LINUX_OV511_H
#define __LINUX_OV511_H
#include <asm/uaccess.h>
#include <linux/videodev.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <linux/usb.h>
#include <linux/mutex.h>
#define OV511_DEBUG /* Turn on debug messages */
#ifdef OV511_DEBUG
#define PDEBUG(level, fmt, args...) \
if (debug >= (level)) \
printk(KERN_INFO KBUILD_MODNAME "[%s:%d] \n" fmt, \
__func__, __LINE__ , ## args)
#else
#define PDEBUG(level, fmt, args...) do {} while(0)
#endif
/* This macro restricts an int variable to an inclusive range */
#define RESTRICT_TO_RANGE(v,mi,ma) { \
if ((v) < (mi)) (v) = (mi); \
else if ((v) > (ma)) (v) = (ma); \
}
/* --------------------------------- */
/* DEFINES FOR OV511 AND OTHER CHIPS */
/* --------------------------------- */
/* USB IDs */
#define VEND_OMNIVISION 0x05A9
#define PROD_OV511 0x0511
#define PROD_OV511PLUS 0xA511
#define PROD_OV518 0x0518
#define PROD_OV518PLUS 0xA518
#define VEND_MATTEL 0x0813
#define PROD_ME2CAM 0x0002
/* --------------------------------- */
/* OV51x REGISTER MNEMONICS */
/* --------------------------------- */
/* Camera interface register numbers */
#define R511_CAM_DELAY 0x10
#define R511_CAM_EDGE 0x11
#define R511_CAM_PXCNT 0x12
#define R511_CAM_LNCNT 0x13
#define R511_CAM_PXDIV 0x14
#define R511_CAM_LNDIV 0x15
#define R511_CAM_UV_EN 0x16
#define R511_CAM_LINE_MODE 0x17
#define R511_CAM_OPTS 0x18
/* Snapshot mode camera interface register numbers */
#define R511_SNAP_FRAME 0x19
#define R511_SNAP_PXCNT 0x1A
#define R511_SNAP_LNCNT 0x1B
#define R511_SNAP_PXDIV 0x1C
#define R511_SNAP_LNDIV 0x1D
#define R511_SNAP_UV_EN 0x1E
#define R511_SNAP_OPTS 0x1F
/* DRAM register numbers */
#define R511_DRAM_FLOW_CTL 0x20
#define R511_DRAM_ARCP 0x21
#define R511_DRAM_MRC 0x22
#define R511_DRAM_RFC 0x23
/* ISO FIFO register numbers */
#define R51x_FIFO_PSIZE 0x30 /* 2 bytes wide w/ OV518(+) */
#define R511_FIFO_OPTS 0x31
/* Parallel IO register numbers */
#define R511_PIO_OPTS 0x38
#define R511_PIO_DATA 0x39
#define R511_PIO_BIST 0x3E
#define R518_GPIO_IN 0x55 /* OV518(+) only */
#define R518_GPIO_OUT 0x56 /* OV518(+) only */
#define R518_GPIO_CTL 0x57 /* OV518(+) only */
#define R518_GPIO_PULSE_IN 0x58 /* OV518(+) only */
#define R518_GPIO_PULSE_CLEAR 0x59 /* OV518(+) only */
#define R518_GPIO_PULSE_POL 0x5a /* OV518(+) only */
#define R518_GPIO_PULSE_EN 0x5b /* OV518(+) only */
#define R518_GPIO_RESET 0x5c /* OV518(+) only */
/* I2C registers */
#define R511_I2C_CTL 0x40
#define R518_I2C_CTL 0x47 /* OV518(+) only */
#define R51x_I2C_W_SID 0x41
#define R51x_I2C_SADDR_3 0x42
#define R51x_I2C_SADDR_2 0x43
#define R51x_I2C_R_SID 0x44
#define R51x_I2C_DATA 0x45
#define R51x_I2C_CLOCK 0x46
#define R51x_I2C_TIMEOUT 0x47
/* I2C snapshot registers */
#define R511_SI2C_SADDR_3 0x48
#define R511_SI2C_DATA 0x49
/* System control registers */
#define R51x_SYS_RESET 0x50
/* Reset type definitions */
#define OV511_RESET_UDC 0x01
#define OV511_RESET_I2C 0x02
#define OV511_RESET_FIFO 0x04
#define OV511_RESET_OMNICE 0x08
#define OV511_RESET_DRAM 0x10
#define OV511_RESET_CAM_INT 0x20
#define OV511_RESET_OV511 0x40
#define OV511_RESET_NOREGS 0x3F /* All but OV511 & regs */
#define OV511_RESET_ALL 0x7F
#define R511_SYS_CLOCK_DIV 0x51
#define R51x_SYS_SNAP 0x52
#define R51x_SYS_INIT 0x53
#define R511_SYS_PWR_CLK 0x54 /* OV511+/OV518(+) only */
#define R511_SYS_LED_CTL 0x55 /* OV511+ only */
#define R511_SYS_USER 0x5E
#define R511_SYS_CUST_ID 0x5F
/* OmniCE (compression) registers */
#define R511_COMP_PHY 0x70
#define R511_COMP_PHUV 0x71
#define R511_COMP_PVY 0x72
#define R511_COMP_PVUV 0x73
#define R511_COMP_QHY 0x74
#define R511_COMP_QHUV 0x75
#define R511_COMP_QVY 0x76
#define R511_COMP_QVUV 0x77
#define R511_COMP_EN 0x78
#define R511_COMP_LUT_EN 0x79
#define R511_COMP_LUT_BEGIN 0x80
/* --------------------------------- */
/* ALTERNATE NUMBERS */
/* --------------------------------- */
/* Alternate numbers for various max packet sizes (OV511 only) */
#define OV511_ALT_SIZE_992 0
#define OV511_ALT_SIZE_993 1
#define OV511_ALT_SIZE_768 2
#define OV511_ALT_SIZE_769 3
#define OV511_ALT_SIZE_512 4
#define OV511_ALT_SIZE_513 5
#define OV511_ALT_SIZE_257 6
#define OV511_ALT_SIZE_0 7
/* Alternate numbers for various max packet sizes (OV511+ only) */
#define OV511PLUS_ALT_SIZE_0 0
#define OV511PLUS_ALT_SIZE_33 1
#define OV511PLUS_ALT_SIZE_129 2
#define OV511PLUS_ALT_SIZE_257 3
#define OV511PLUS_ALT_SIZE_385 4
#define OV511PLUS_ALT_SIZE_513 5
#define OV511PLUS_ALT_SIZE_769 6
#define OV511PLUS_ALT_SIZE_961 7
/* Alternate numbers for various max packet sizes (OV518(+) only) */
#define OV518_ALT_SIZE_0 0
#define OV518_ALT_SIZE_128 1
#define OV518_ALT_SIZE_256 2
#define OV518_ALT_SIZE_384 3
#define OV518_ALT_SIZE_512 4
#define OV518_ALT_SIZE_640 5
#define OV518_ALT_SIZE_768 6
#define OV518_ALT_SIZE_896 7
/* --------------------------------- */
/* OV7610 REGISTER MNEMONICS */
/* --------------------------------- */
/* OV7610 registers */
#define OV7610_REG_GAIN 0x00 /* gain setting (5:0) */
#define OV7610_REG_BLUE 0x01 /* blue channel balance */
#define OV7610_REG_RED 0x02 /* red channel balance */
#define OV7610_REG_SAT 0x03 /* saturation */
/* 04 reserved */
#define OV7610_REG_CNT 0x05 /* Y contrast */
#define OV7610_REG_BRT 0x06 /* Y brightness */
/* 08-0b reserved */
#define OV7610_REG_BLUE_BIAS 0x0C /* blue channel bias (5:0) */
#define OV7610_REG_RED_BIAS 0x0D /* read channel bias (5:0) */
#define OV7610_REG_GAMMA_COEFF 0x0E /* gamma settings */
#define OV7610_REG_WB_RANGE 0x0F /* AEC/ALC/S-AWB settings */
#define OV7610_REG_EXP 0x10 /* manual exposure setting */
#define OV7610_REG_CLOCK 0x11 /* polarity/clock prescaler */
#define OV7610_REG_COM_A 0x12 /* misc common regs */
#define OV7610_REG_COM_B 0x13 /* misc common regs */
#define OV7610_REG_COM_C 0x14 /* misc common regs */
#define OV7610_REG_COM_D 0x15 /* misc common regs */
#define OV7610_REG_FIELD_DIVIDE 0x16 /* field interval/mode settings */
#define OV7610_REG_HWIN_START 0x17 /* horizontal window start */
#define OV7610_REG_HWIN_END 0x18 /* horizontal window end */
#define OV7610_REG_VWIN_START 0x19 /* vertical window start */
#define OV7610_REG_VWIN_END 0x1A /* vertical window end */
#define OV7610_REG_PIXEL_SHIFT 0x1B /* pixel shift */
#define OV7610_REG_ID_HIGH 0x1C /* manufacturer ID MSB */
#define OV7610_REG_ID_LOW 0x1D /* manufacturer ID LSB */
/* 0e-0f reserved */
#define OV7610_REG_COM_E 0x20 /* misc common regs */
#define OV7610_REG_YOFFSET 0x21 /* Y channel offset */
#define OV7610_REG_UOFFSET 0x22 /* U channel offset */
/* 23 reserved */
#define OV7610_REG_ECW 0x24 /* Exposure white level for AEC */
#define OV7610_REG_ECB 0x25 /* Exposure black level for AEC */
#define OV7610_REG_COM_F 0x26 /* misc settings */
#define OV7610_REG_COM_G 0x27 /* misc settings */
#define OV7610_REG_COM_H 0x28 /* misc settings */
#define OV7610_REG_COM_I 0x29 /* misc settings */
#define OV7610_REG_FRAMERATE_H 0x2A /* frame rate MSB + misc */
#define OV7610_REG_FRAMERATE_L 0x2B /* frame rate LSB */
#define OV7610_REG_ALC 0x2C /* Auto Level Control settings */
#define OV7610_REG_COM_J 0x2D /* misc settings */
#define OV7610_REG_VOFFSET 0x2E /* V channel offset adjustment */
#define OV7610_REG_ARRAY_BIAS 0x2F /* Array bias -- don't change */
/* 30-32 reserved */
#define OV7610_REG_YGAMMA 0x33 /* misc gamma settings (7:6) */
#define OV7610_REG_BIAS_ADJUST 0x34 /* misc bias settings */
#define OV7610_REG_COM_L 0x35 /* misc settings */
/* 36-37 reserved */
#define OV7610_REG_COM_K 0x38 /* misc registers */
/* --------------------------------- */
/* I2C ADDRESSES */
/* --------------------------------- */
#define OV7xx0_SID 0x42
#define OV6xx0_SID 0xC0
#define OV8xx0_SID 0xA0
#define KS0127_SID 0xD8
#define SAA7111A_SID 0x48
/* --------------------------------- */
/* MISCELLANEOUS DEFINES */
/* --------------------------------- */
#define I2C_CLOCK_PRESCALER 0x03
#define FRAMES_PER_DESC 10 /* FIXME - What should this be? */
#define MAX_FRAME_SIZE_PER_DESC 993 /* For statically allocated stuff */
#define PIXELS_PER_SEG 256 /* Pixels per segment */
#define OV511_ENDPOINT_ADDRESS 1 /* Isoc endpoint number */
#define OV511_NUMFRAMES 2
#if OV511_NUMFRAMES > VIDEO_MAX_FRAME
#error "OV511_NUMFRAMES is too high"
#endif
#define OV511_NUMSBUF 2
/* Control transfers use up to 4 bytes */
#define OV511_CBUF_SIZE 4
/* Size of usb_make_path() buffer */
#define OV511_USB_PATH_LEN 64
/* Bridge types */
enum {
BRG_UNKNOWN,
BRG_OV511,
BRG_OV511PLUS,
BRG_OV518,
BRG_OV518PLUS,
};
/* Bridge classes */
enum {
BCL_UNKNOWN,
BCL_OV511,
BCL_OV518,
};
/* Sensor types */
enum {
SEN_UNKNOWN,
SEN_OV76BE,
SEN_OV7610,
SEN_OV7620,
SEN_OV7620AE,
SEN_OV6620,
SEN_OV6630,
SEN_OV6630AE,
SEN_OV6630AF,
SEN_OV8600,
SEN_KS0127,
SEN_KS0127B,
SEN_SAA7111A,
};
enum {
STATE_SCANNING, /* Scanning for start */
STATE_HEADER, /* Parsing header */
STATE_LINES, /* Parsing lines */
};
/* Buffer states */
enum {
BUF_NOT_ALLOCATED,
BUF_ALLOCATED,
};
/* --------- Definition of ioctl interface --------- */
#define OV511_INTERFACE_VER 101
/* LED options */
enum {
LED_OFF,
LED_ON,
LED_AUTO,
};
/* Raw frame formats */
enum {
RAWFMT_INVALID,
RAWFMT_YUV400,
RAWFMT_YUV420,
RAWFMT_YUV422,
RAWFMT_GBR422,
};
struct ov511_i2c_struct {
unsigned char slave; /* Write slave ID (read ID - 1) */
unsigned char reg; /* Index of register */
unsigned char value; /* User sets this w/ write, driver does w/ read */
unsigned char mask; /* Bits to be changed. Not used with read ops */
};
/* ioctls */
#define OV511IOC_WI2C _IOW('v', BASE_VIDIOCPRIVATE + 5, \
struct ov511_i2c_struct)
#define OV511IOC_RI2C _IOWR('v', BASE_VIDIOCPRIVATE + 6, \
struct ov511_i2c_struct)
/* ------------- End IOCTL interface -------------- */
struct usb_ov511; /* Forward declaration */
struct ov511_sbuf {
struct usb_ov511 *ov;
unsigned char *data;
struct urb *urb;
spinlock_t lock;
int n;
};
enum {
FRAME_UNUSED, /* Unused (no MCAPTURE) */
FRAME_READY, /* Ready to start grabbing */
FRAME_GRABBING, /* In the process of being grabbed into */
FRAME_DONE, /* Finished grabbing, but not been synced yet */
FRAME_ERROR, /* Something bad happened while processing */
};
struct ov511_regvals {
enum {
OV511_DONE_BUS,
OV511_REG_BUS,
OV511_I2C_BUS,
} bus;
unsigned char reg;
unsigned char val;
};
struct ov511_frame {
int framenum; /* Index of this frame */
unsigned char *data; /* Frame buffer */
unsigned char *tempdata; /* Temp buffer for multi-stage conversions */
unsigned char *rawdata; /* Raw camera data buffer */
unsigned char *compbuf; /* Temp buffer for decompressor */
int depth; /* Bytes per pixel */
int width; /* Width application is expecting */
int height; /* Height application is expecting */
int rawwidth; /* Actual width of frame sent from camera */
int rawheight; /* Actual height of frame sent from camera */
int sub_flag; /* Sub-capture mode for this frame? */
unsigned int format; /* Format for this frame */
int compressed; /* Is frame compressed? */
volatile int grabstate; /* State of grabbing */
int scanstate; /* State of scanning */
int bytes_recvd; /* Number of image bytes received from camera */
long bytes_read; /* Amount that has been read() */
wait_queue_head_t wq; /* Processes waiting */
int snapshot; /* True if frame was a snapshot */
};
#define DECOMP_INTERFACE_VER 4
/* Compression module operations */
struct ov51x_decomp_ops {
int (*decomp_400)(unsigned char *, unsigned char *, unsigned char *,
int, int, int);
int (*decomp_420)(unsigned char *, unsigned char *, unsigned char *,
int, int, int);
int (*decomp_422)(unsigned char *, unsigned char *, unsigned char *,
int, int, int);
struct module *owner;
};
struct usb_ov511 {
struct video_device *vdev;
struct usb_device *dev;
int customid;
char *desc;
unsigned char iface;
char usb_path[OV511_USB_PATH_LEN];
/* Determined by sensor type */
int maxwidth;
int maxheight;
int minwidth;
int minheight;
int brightness;
int colour;
int contrast;
int hue;
int whiteness;
int exposure;
int auto_brt; /* Auto brightness enabled flag */
int auto_gain; /* Auto gain control enabled flag */
int auto_exp; /* Auto exposure enabled flag */
int backlight; /* Backlight exposure algorithm flag */
int mirror; /* Image is reversed horizontally */
int led_policy; /* LED: off|on|auto; OV511+ only */
struct mutex lock; /* Serializes user-accessible operations */
int user; /* user count for exclusive use */
int streaming; /* Are we streaming Isochronous? */
int grabbing; /* Are we grabbing? */
int compress; /* Should the next frame be compressed? */
int compress_inited; /* Are compression params uploaded? */
int lightfreq; /* Power (lighting) frequency */
int bandfilt; /* Banding filter enabled flag */
unsigned char *fbuf; /* Videodev buffer area */
unsigned char *tempfbuf; /* Temporary (intermediate) buffer area */
unsigned char *rawfbuf; /* Raw camera data buffer area */
int sub_flag; /* Pix Array subcapture on flag */
int subx; /* Pix Array subcapture x offset */
int suby; /* Pix Array subcapture y offset */
int subw; /* Pix Array subcapture width */
int subh; /* Pix Array subcapture height */
int curframe; /* Current receiving sbuf */
struct ov511_frame frame[OV511_NUMFRAMES];
struct ov511_sbuf sbuf[OV511_NUMSBUF];
wait_queue_head_t wq; /* Processes waiting */
int snap_enabled; /* Snapshot mode enabled */
int bridge; /* Type of bridge (BRG_*) */
int bclass; /* Class of bridge (BCL_*) */
int sensor; /* Type of image sensor chip (SEN_*) */
int packet_size; /* Frame size per isoc desc */
int packet_numbering; /* Is ISO frame numbering enabled? */
/* Framebuffer/sbuf management */
int buf_state;
struct mutex buf_lock;
struct ov51x_decomp_ops *decomp_ops;
/* Stop streaming while changing picture settings */
int stop_during_set;
int stopped; /* Streaming is temporarily paused */
/* Video decoder stuff */
int input; /* Composite, S-VIDEO, etc... */
int num_inputs; /* Number of inputs */
int norm; /* NTSC / PAL / SECAM */
int has_decoder; /* Device has a video decoder */
int pal; /* Device is designed for PAL resolution */
/* ov511 device number ID */
int nr; /* Stores a device number */
/* I2C interface */
struct mutex i2c_lock; /* Protect I2C controller regs */
unsigned char primary_i2c_slave; /* I2C write id of sensor */
/* Control transaction stuff */
unsigned char *cbuf; /* Buffer for payload */
struct mutex cbuf_lock;
};
/* Used to represent a list of values and their respective symbolic names */
struct symbolic_list {
int num;
char *name;
};
#define NOT_DEFINED_STR "Unknown"
/* Returns the name of the matching element in the symbolic_list array. The
* end of the list must be marked with an element that has a NULL name.
*/
static inline char *
symbolic(struct symbolic_list list[], int num)
{
int i;
for (i = 0; list[i].name != NULL; i++)
if (list[i].num == num)
return (list[i].name);
return (NOT_DEFINED_STR);
}
/* Compression stuff */
#define OV511_QUANTABLESIZE 64
#define OV518_QUANTABLESIZE 32
#define OV511_YQUANTABLE { \
0, 1, 1, 2, 2, 3, 3, 4, \
1, 1, 1, 2, 2, 3, 4, 4, \
1, 1, 2, 2, 3, 4, 4, 4, \
2, 2, 2, 3, 4, 4, 4, 4, \
2, 2, 3, 4, 4, 5, 5, 5, \
3, 3, 4, 4, 5, 5, 5, 5, \
3, 4, 4, 4, 5, 5, 5, 5, \
4, 4, 4, 4, 5, 5, 5, 5 \
}
#define OV511_UVQUANTABLE { \
0, 2, 2, 3, 4, 4, 4, 4, \
2, 2, 2, 4, 4, 4, 4, 4, \
2, 2, 3, 4, 4, 4, 4, 4, \
3, 4, 4, 4, 4, 4, 4, 4, \
4, 4, 4, 4, 4, 4, 4, 4, \
4, 4, 4, 4, 4, 4, 4, 4, \
4, 4, 4, 4, 4, 4, 4, 4, \
4, 4, 4, 4, 4, 4, 4, 4 \
}
#define OV518_YQUANTABLE { \
5, 4, 5, 6, 6, 7, 7, 7, \
5, 5, 5, 5, 6, 7, 7, 7, \
6, 6, 6, 6, 7, 7, 7, 8, \
7, 7, 6, 7, 7, 7, 8, 8 \
}
#define OV518_UVQUANTABLE { \
6, 6, 6, 7, 7, 7, 7, 7, \
6, 6, 6, 7, 7, 7, 7, 7, \
6, 6, 6, 7, 7, 7, 7, 8, \
7, 7, 7, 7, 7, 7, 8, 8 \
}
#endif
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