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android_kernel_xiaomi_sm8350/drivers/media/video/usbvision/usbvision.h
Thierry 5f7fb877be V4L/DVB (4928): Usbvision_v4l2 robustness on disconnect 
This patch corrects 2 bugs (causes kernel oops) that occur when
unplugging the peripheral whereas nobody has opened it yet :
- do not call usbvision_stop_isoc if usbvision_init_isoc has not been called
- do not call wakeup_interruptible on waitqueues that did not have been
initialized with init_waitqueue_head

Signed-off-by: Thierry MERLE <thierry.merle@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 09:05:46 -02:00

494 lines
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/*
* USBVISION.H
* usbvision header file
*
* Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
*
* This module is part of usbvision driver project.
* Updates to driver completed by Dwaine P. Garden
*
* 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 __LINUX_USBVISION_H
#define __LINUX_USBVISION_H
#include <linux/list.h>
#include <linux/usb.h>
#include "usbvision-i2c.h"
#ifndef VID_HARDWARE_USBVISION
#define VID_HARDWARE_USBVISION 34 /* USBVision Video Grabber */
#endif
#define USBVISION_PWR_REG 0x00
#define USBVISION_SSPND_EN (1 << 1)
#define USBVISION_RES2 (1 << 2)
#define USBVISION_PWR_VID (1 << 5)
#define USBVISION_E2_EN (1 << 7)
#define USBVISION_CONFIG_REG 0x01
#define USBVISION_ADRS_REG 0x02
#define USBVISION_ALTER_REG 0x03
#define USBVISION_FORCE_ALTER_REG 0x04
#define USBVISION_STATUS_REG 0x05
#define USBVISION_IOPIN_REG 0x06
#define USBVISION_IO_1 (1 << 0)
#define USBVISION_IO_2 (1 << 1)
#define USBVISION_AUDIO_IN 0
#define USBVISION_AUDIO_TV 1
#define USBVISION_AUDIO_RADIO 2
#define USBVISION_AUDIO_MUTE 3
#define USBVISION_SER_MODE 0x07
#define USBVISION_SER_ADRS 0x08
#define USBVISION_SER_CONT 0x09
#define USBVISION_SER_DAT1 0x0A
#define USBVISION_SER_DAT2 0x0B
#define USBVISION_SER_DAT3 0x0C
#define USBVISION_SER_DAT4 0x0D
#define USBVISION_EE_DATA 0x0E
#define USBVISION_EE_LSBAD 0x0F
#define USBVISION_EE_CONT 0x10
#define USBVISION_DRM_CONT 0x12
#define USBVISION_REF (1 << 0)
#define USBVISION_RES_UR (1 << 2)
#define USBVISION_RES_FDL (1 << 3)
#define USBVISION_RES_VDW (1 << 4)
#define USBVISION_DRM_PRM1 0x13
#define USBVISION_DRM_PRM2 0x14
#define USBVISION_DRM_PRM3 0x15
#define USBVISION_DRM_PRM4 0x16
#define USBVISION_DRM_PRM5 0x17
#define USBVISION_DRM_PRM6 0x18
#define USBVISION_DRM_PRM7 0x19
#define USBVISION_DRM_PRM8 0x1A
#define USBVISION_VIN_REG1 0x1B
#define USBVISION_8_422_SYNC 0x01
#define USBVISION_16_422_SYNC 0x02
#define USBVISION_VSNC_POL (1 << 3)
#define USBVISION_HSNC_POL (1 << 4)
#define USBVISION_FID_POL (1 << 5)
#define USBVISION_HVALID_PO (1 << 6)
#define USBVISION_VCLK_POL (1 << 7)
#define USBVISION_VIN_REG2 0x1C
#define USBVISION_AUTO_FID (1 << 0)
#define USBVISION_NONE_INTER (1 << 1)
#define USBVISION_NOHVALID (1 << 2)
#define USBVISION_UV_ID (1 << 3)
#define USBVISION_FIX_2C (1 << 4)
#define USBVISION_SEND_FID (1 << 5)
#define USBVISION_KEEP_BLANK (1 << 7)
#define USBVISION_LXSIZE_I 0x1D
#define USBVISION_MXSIZE_I 0x1E
#define USBVISION_LYSIZE_I 0x1F
#define USBVISION_MYSIZE_I 0x20
#define USBVISION_LX_OFFST 0x21
#define USBVISION_MX_OFFST 0x22
#define USBVISION_LY_OFFST 0x23
#define USBVISION_MY_OFFST 0x24
#define USBVISION_FRM_RATE 0x25
#define USBVISION_LXSIZE_O 0x26
#define USBVISION_MXSIZE_O 0x27
#define USBVISION_LYSIZE_O 0x28
#define USBVISION_MYSIZE_O 0x29
#define USBVISION_FILT_CONT 0x2A
#define USBVISION_VO_MODE 0x2B
#define USBVISION_INTRA_CYC 0x2C
#define USBVISION_STRIP_SZ 0x2D
#define USBVISION_FORCE_INTRA 0x2E
#define USBVISION_FORCE_UP 0x2F
#define USBVISION_BUF_THR 0x30
#define USBVISION_DVI_YUV 0x31
#define USBVISION_AUDIO_CONT 0x32
#define USBVISION_AUD_PK_LEN 0x33
#define USBVISION_BLK_PK_LEN 0x34
#define USBVISION_PCM_THR1 0x38
#define USBVISION_PCM_THR2 0x39
#define USBVISION_DIST_THR_L 0x3A
#define USBVISION_DIST_THR_H 0x3B
#define USBVISION_MAX_DIST_L 0x3C
#define USBVISION_MAX_DIST_H 0x3D
#define USBVISION_OP_CODE 0x33
#define MAX_BYTES_PER_PIXEL 4
#define MIN_FRAME_WIDTH 64
#define MAX_USB_WIDTH 320 //384
#define MAX_FRAME_WIDTH 320 //384 /*streching sometimes causes crashes*/
#define MIN_FRAME_HEIGHT 48
#define MAX_USB_HEIGHT 240 //288
#define MAX_FRAME_HEIGHT 240 //288 /*Streching sometimes causes crashes*/
#define MAX_FRAME_SIZE (MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT * MAX_BYTES_PER_PIXEL)
#define USBVISION_CLIPMASK_SIZE (MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT / 8) //bytesize of clipmask
#define USBVISION_URB_FRAMES 32
#define USBVISION_MAX_ISOC_PACKET_SIZE 959 // NT1003 Specs Document says 1023
#define USBVISION_NUM_HEADERMARKER 20
#define USBVISION_NUMFRAMES 3
#define USBVISION_NUMSBUF 2
#define USBVISION_POWEROFF_TIME 3 * (HZ) // 3 seconds
/* 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); }
/*
* We use macros to do YUV -> RGB conversion because this is
* very important for speed and totally unimportant for size.
*
* YUV -> RGB Conversion
* ---------------------
*
* B = 1.164*(Y-16) + 2.018*(V-128)
* G = 1.164*(Y-16) - 0.813*(U-128) - 0.391*(V-128)
* R = 1.164*(Y-16) + 1.596*(U-128)
*
* If you fancy integer arithmetics (as you should), hear this:
*
* 65536*B = 76284*(Y-16) + 132252*(V-128)
* 65536*G = 76284*(Y-16) - 53281*(U-128) - 25625*(V-128)
* 65536*R = 76284*(Y-16) + 104595*(U-128)
*
* Make sure the output values are within [0..255] range.
*/
#define LIMIT_RGB(x) (((x) < 0) ? 0 : (((x) > 255) ? 255 : (x)))
#define YUV_TO_RGB_BY_THE_BOOK(my,mu,mv,mr,mg,mb) { \
int mm_y, mm_yc, mm_u, mm_v, mm_r, mm_g, mm_b; \
mm_y = (my) - 16; \
mm_u = (mu) - 128; \
mm_v = (mv) - 128; \
mm_yc= mm_y * 76284; \
mm_b = (mm_yc + 132252*mm_v ) >> 16; \
mm_g = (mm_yc - 53281*mm_u - 25625*mm_v ) >> 16; \
mm_r = (mm_yc + 104595*mm_u ) >> 16; \
mb = LIMIT_RGB(mm_b); \
mg = LIMIT_RGB(mm_g); \
mr = LIMIT_RGB(mm_r); \
}
/* Debugging aid */
#define USBVISION_SAY_AND_WAIT(what) { \
wait_queue_head_t wq; \
init_waitqueue_head(&wq); \
printk(KERN_INFO "Say: %s\n", what); \
interruptible_sleep_on_timeout (&wq, HZ*3); \
}
/*
* This macro checks if usbvision is still operational. The 'usbvision'
* pointer must be valid, usbvision->dev must be valid, we are not
* removing the device and the device has not erred on us.
*/
#define USBVISION_IS_OPERATIONAL(udevice) (\
(udevice != NULL) && \
((udevice)->dev != NULL) && \
((udevice)->last_error == 0) && \
(!(udevice)->remove_pending))
enum ScanState {
ScanState_Scanning, /* Scanning for header */
ScanState_Lines /* Parsing lines */
};
/* Completion states of the data parser */
enum ParseState {
ParseState_Continue, /* Just parse next item */
ParseState_NextFrame, /* Frame done, send it to V4L */
ParseState_Out, /* Not enough data for frame */
ParseState_EndParse /* End parsing */
};
enum FrameState {
FrameState_Unused, /* Unused (no MCAPTURE) */
FrameState_Ready, /* Ready to start grabbing */
FrameState_Grabbing, /* In the process of being grabbed into */
FrameState_Done, /* Finished grabbing, but not been synced yet */
FrameState_DoneHold, /* Are syncing or reading */
FrameState_Error, /* Something bad happened while processing */
};
/* stream states */
enum StreamState {
Stream_Off, /* Driver streaming is completely OFF */
Stream_Idle, /* Driver streaming is ready to be put ON by the application */
Stream_Interrupt, /* Driver streaming must be interrupted */
Stream_On, /* Driver streaming is put ON by the application */
};
enum IsocState {
IsocState_InFrame, /* Isoc packet is member of frame */
IsocState_NoFrame, /* Isoc packet is not member of any frame */
};
struct usb_device;
struct usbvision_sbuf {
char *data;
struct urb *urb;
};
#define USBVISION_MAGIC_1 0x55
#define USBVISION_MAGIC_2 0xAA
#define USBVISION_HEADER_LENGTH 0x0c
#define USBVISION_SAA7111_ADDR 0x48
#define USBVISION_SAA7113_ADDR 0x4a
#define USBVISION_IIC_LRACK 0x20
#define USBVISION_IIC_LRNACK 0x30
#define USBVISION_FRAME_FORMAT_PARAM_INTRA (1<<7)
struct usbvision_v4l2_format_st {
int supported;
int bytes_per_pixel;
int depth;
int format;
char *desc;
};
#define USBVISION_SUPPORTED_PALETTES ARRAY_SIZE(usbvision_v4l2_format)
struct usbvision_frame_header {
unsigned char magic_1; /* 0 magic */
unsigned char magic_2; /* 1 magic */
unsigned char headerLength; /* 2 */
unsigned char frameNum; /* 3 */
unsigned char framePhase; /* 4 */
unsigned char frameLatency; /* 5 */
unsigned char dataFormat; /* 6 */
unsigned char formatParam; /* 7 */
unsigned char frameWidthLo; /* 8 */
unsigned char frameWidthHi; /* 9 */
unsigned char frameHeightLo; /* 10 */
unsigned char frameHeightHi; /* 11 */
__u16 frameWidth; /* 8 - 9 after endian correction*/
__u16 frameHeight; /* 10 - 11 after endian correction*/
};
/* tvnorms */
struct usbvision_tvnorm {
char *name;
v4l2_std_id id;
/* mode for saa7113h */
int mode;
};
struct usbvision_frame {
char *data; /* Frame buffer */
struct usbvision_frame_header isocHeader; /* Header from stream */
int width; /* Width application is expecting */
int height; /* Height */
int index; /* Frame index */
int frmwidth; /* Width the frame actually is */
int frmheight; /* Height */
volatile int grabstate; /* State of grabbing */
int scanstate; /* State of scanning */
struct list_head frame;
int curline; /* Line of frame we're working on */
long scanlength; /* uncompressed, raw data length of frame */
long bytes_read; /* amount of scanlength that has been read from data */
struct usbvision_v4l2_format_st v4l2_format; /* format the user needs*/
int v4l2_linesize; /* bytes for one videoline*/
struct timeval timestamp;
int sequence; // How many video frames we send to user
};
#define CODEC_SAA7113 7113
#define CODEC_SAA7111 7111
#define BRIDGE_NT1003 1003
#define BRIDGE_NT1004 1004
#define BRIDGE_NT1005 1005
#define USBVISION_I2C_CLIENTS_MAX 8
struct usbvision_device_data_st {
int idVendor;
int idProduct;
int Interface; /* to handle special interface number like BELKIN and Hauppauge WinTV-USB II */
int Codec;
int VideoChannels;
__u64 VideoNorm;
int AudioChannels;
int Radio;
int vbi;
int Tuner;
int TunerType;
int Vin_Reg1;
int Vin_Reg2;
int X_Offset;
int Y_Offset;
int Dvi_yuv;
char *ModelString;
};
/* Declared on usbvision-cards.c */
extern struct usbvision_device_data_st usbvision_device_data[];
extern struct usb_device_id usbvision_table[];
struct usb_usbvision {
struct video_device *vdev; /* Video Device */
struct video_device *rdev; /* Radio Device */
struct video_device *vbi; /* VBI Device */
struct video_audio audio_dev; /* Current audio params */
/* i2c Declaration Section*/
struct i2c_adapter i2c_adap;
struct i2c_algo_usb_data i2c_algo;
struct i2c_client i2c_client;
int i2c_state, i2c_ok;
struct i2c_client *i2c_clients[USBVISION_I2C_CLIENTS_MAX];
struct urb *ctrlUrb;
unsigned char ctrlUrbBuffer[8];
int ctrlUrbBusy;
struct usb_ctrlrequest ctrlUrbSetup;
wait_queue_head_t ctrlUrb_wq; // Processes waiting
struct semaphore ctrlUrbLock;
int have_tuner;
int tuner_type;
int bridgeType; // NT1003, NT1004, NT1005
int channel;
int radio;
int video_inputs; // # of inputs
unsigned long freq;
int AudioMute;
int AudioChannel;
int isocMode; // format of video data for the usb isoc-transfer
unsigned int nr; // Number of the device < MAX_USBVISION
/* Device structure */
struct usb_device *dev;
unsigned char iface; /* Video interface number */
unsigned char ifaceAltActive, ifaceAltInactive; /* Alt settings */
unsigned char Vin_Reg2_Preset;
struct semaphore lock;
struct timer_list powerOffTimer;
struct work_struct powerOffWork;
int power; /* is the device powered on? */
int user; /* user count for exclusive use */
int usbvision_used; /* Is this structure in use? */
int initialized; /* Had we already sent init sequence? */
int DevModel; /* What type of USBVISION device we got? */
enum StreamState streaming; /* Are we streaming Isochronous? */
int last_error; /* What calamity struck us? */
int curwidth; /* width of the frame the device is currently set to*/
int curheight; /* height of the frame the device is currently set to*/
int stretch_width; /* stretch-factor for frame width (from usb to screen)*/
int stretch_height; /* stretch-factor for frame height (from usb to screen)*/
char *fbuf; /* Videodev buffer area for mmap*/
int max_frame_size; /* Bytes in one video frame */
int fbuf_size; /* Videodev buffer size */
spinlock_t queue_lock; /* spinlock for protecting mods on inqueue and outqueue */
struct list_head inqueue, outqueue; /* queued frame list and ready to dequeue frame list */
wait_queue_head_t wait_frame; /* Processes waiting */
wait_queue_head_t wait_stream; /* Processes waiting */
struct usbvision_frame *curFrame; // pointer to current frame, set by usbvision_find_header
struct usbvision_frame frame[USBVISION_NUMFRAMES]; // frame buffer
int curSbufNum; // number of current receiving sbuf
struct usbvision_sbuf sbuf[USBVISION_NUMSBUF]; // S buffering
volatile int remove_pending; /* If set then about to exit */
/* Scratch space from the Isochronous Pipe.*/
unsigned char *scratch;
int scratch_read_ptr;
int scratch_write_ptr;
int scratch_headermarker[USBVISION_NUM_HEADERMARKER];
int scratch_headermarker_read_ptr;
int scratch_headermarker_write_ptr;
int isocstate;
/* color controls */
int saturation;
int hue;
int brightness;
int contrast;
int depth;
struct usbvision_v4l2_format_st palette;
struct v4l2_capability vcap; /* Video capabilities */
unsigned int ctl_input; /* selected input */
struct usbvision_tvnorm *tvnorm; /* selected tv norm */
unsigned char video_endp; /* 0x82 for USBVISION devices based */
// Overlay stuff:
struct v4l2_framebuffer vid_buf;
struct v4l2_format vid_win;
int vid_buf_valid; // Status: video buffer is valid (set)
int vid_win_valid; // Status: video window is valid (set)
int overlay; /*Status: Are we overlaying? */
unsigned int clipmask[USBVISION_CLIPMASK_SIZE / 4];
unsigned char *overlay_base; /* Virtual base address of video buffer */
unsigned char *overlay_win; /* virt start address of overlay window */
struct usbvision_frame overlay_frame;
// Decompression stuff:
unsigned char *IntraFrameBuffer; /* Buffer for reference frame */
int BlockPos; //for test only
int requestIntra; // 0 = normal; 1 = intra frame is requested;
int lastIsocFrameNum; // check for lost isoc frames
int isocPacketSize; // need to calculate usedBandwidth
int usedBandwidth; // used bandwidth 0-100%, need to set comprLevel
int comprLevel; // How strong (100) or weak (0) is compression
int lastComprLevel; // How strong (100) or weak (0) was compression
int usb_bandwidth; /* Mbit/s */
/* /proc entries, relative to /proc/video/usbvision/ */
struct proc_dir_entry *proc_devdir; /* Per-device proc directory */
struct proc_dir_entry *proc_info; /* <minor#>/info entry */
struct proc_dir_entry *proc_register; /* <minor#>/register entry */
struct proc_dir_entry *proc_freq; /* <minor#>/freq entry */
struct proc_dir_entry *proc_input; /* <minor#>/input entry */
struct proc_dir_entry *proc_frame; /* <minor#>/frame entry */
struct proc_dir_entry *proc_button; /* <minor#>/button entry */
struct proc_dir_entry *proc_control; /* <minor#>/control entry */
/* Statistics that can be overlayed on the screen */
unsigned long isocUrbCount; // How many URBs we received so far
unsigned long urb_length; /* Length of last URB */
unsigned long isocDataCount; /* How many bytes we received */
unsigned long header_count; /* How many frame headers we found */
unsigned long scratch_ovf_count; /* How many times we overflowed scratch */
unsigned long isocSkipCount; /* How many empty ISO packets received */
unsigned long isocErrCount; /* How many bad ISO packets received */
unsigned long isocPacketCount; // How many packets we totally got
unsigned long timeInIrq; // How long do we need for interrupt
int isocMeasureBandwidthCount;
int frame_num; // How many video frames we send to user
int maxStripLen; // How big is the biggest strip
int comprBlockPos;
int stripLenErrors; // How many times was BlockPos greater than StripLen
int stripMagicErrors;
int stripLineNumberErrors;
int ComprBlockTypes[4];
};
#endif /* __LINUX_USBVISION_H */
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* ---------------------------------------------------------------------------
* Local variables:
* c-basic-offset: 8
* End:
*/
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