kevin/linux
1
Fork 0
Code
40bad67840
linux/drivers/media/video/usbvision/usbvision-core.c
Thierry MERLE 40bad67840 V4L/DVB (4930): Usbvision_v4l2 : mmap corrected to get all frames 
- private ioctls UVIOCSREG/UVIOCGREG translated to the
	VIDIOC_INT_G_REGISTER/VIDIOC_INT_S_REGISTER
- lost frame bug corrected (mmap rework)
- reset scratch buffer is no buffer is queued (prevents useless scratch
	overflow management)

Signed-off-by: Thierry MERLE <thierry.merle@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 09:05:48 -02:00

5940 lines
174 KiB
C
Raw Blame History

/*
* USB USBVISION Video device driver 0.9.8.3cvs (For Kernel 2.4.19-2.4.32 + 2.6.0-2.6.16)
*
*
*
* Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
*
* This module is part of usbvision driver project.
*
* 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.
*
* Let's call the version 0.... until compression decoding is completely
* implemented.
*
* This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
* It was based on USB CPiA driver written by Peter Pregler,
* Scott J. Bertin and Johannes Erdfelt
* Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
* Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
* Updates to driver completed by Dwaine P. Garden
*
* History:
*
* Mar. 2000 - 15.12.2000: (0.0.0 - 0.2.0)
* Several alpha drivers and the first beta.
*
* Since Dec. 2000: (0.2.1) or (v2.1)
* Code changes or updates by Dwaine Garden and every other person.
*
* Added: New Hauppauge TV device Vendor ID: 0x0573
* Product ID: 0x4D01
* (Thanks to Giovanni Garberoglio)
*
* Added: UK Hauppauge WinTV-USB Vendor ID: 0x0573
* Product ID: 0x4D02
* (Thanks to Derek Freeman-Jones)
*
* Feb, 2001 - Apr 08, 2001: (0.3.0)
* - Some fixes. Driver is now more stable.
* - Scratch is organized as ring-buffer now for better performance
* - DGA (overlay) is now supported.
* !!!!Danger!!!! Clipping is not yet implemented. Your system will
* crash if your video window leaves the screen!!!
* - Max. Framesize is set to 320x240. There isn't more memory on the
* nt1003 video device for the FIFO.
* - Supported video palettes: RGB565, RGB555, RGB24, RGB32
*
*
* Apr 15, 2001: (0.3.1-test...)
* - Clipping is implemented
* - NTSC is now coloured (Thanks to Dwaine Garden)
* - Added SECAM colour detection in saa7111-new
* - Added: French Hauppauge WinTV USB Vendor ID: 0x0573
* Product ID: 0x4D03
* (Thanks to Julius Hrivnac)
* - Added: US Hauppauge WINTV USB Vendor ID: 0x0573
* Product ID: 0x4D00
* (Thanks to Derrick J Brashear)
* - Changes for adding new devices. There's now a table in usbvision.h.
* Adding your devices data to the usbvision_device_data table is all
* you need to add a new device.
*
* May 11, 2001: (0.3.2-test...) (Thanks to Derek Freeman-Jones)
* - Support YUV422 raw format for people with hardware scaling.
* - Only power on the device when opened (use option PowerOnAtOpen=0 to disable it).
* - Turn off audio so we can listen to Line In.
*
* July 5, 2001 - (Patch the driver to run with Kernel 2.4.6)
* - Fixed a problem with the number of parameters passed to video_register_device.
*
* July 6, 2001 - Added: HAUPPAUGE WINTV-USB FM USA Vendor ID: 0x0573
* Product ID: 0x4D10
* (Thanks to Braddock Gaskill)
* Added: USBGear USBG-V1 resp. HAMA USB
* Vendor ID: 0x0573
* Product ID: 0x0003
* (Thanks to Bradley A. Singletary and Juergen Weigert)
*
* Jan 24, 2002 - (0.3.3-test...)
* - Moved all global variables that are device specific the usb_usbvision struct
* - Fixed the 64x48 unchangable image in xawtv when starting it with overlay
* - Add VideoNorm and TunerType to the usb_device_data table
* - Checked the audio channels and mute for HAUPPAUGE WinTV USB FM
* - Implemented the power on when opening the device. But some software opens
* the device several times when starting. So the i2c parts are just registered
* by an open, when they become deregistered by the next close. You can speed
* up tuner detection, when adding "options tuner addr=your_addr" to /etc/modules.conf
* - Begin to resize the frame in width and height. So it will be possible to watch i.e.
* 384x288 pixels at 23 fps.
*
* Feb 10, 2002
* - Added radio device
*
*
* Jul 30, 2002 - (Thanks Cameron Maxwell)
* - Changes to usbvision.h --fixed usbvision device data structure, incorrectly had (0x0573, 0x4d21) for WinTV-USB II, should be 0x4d20.
* - Changes for device WinTV-USB II (0x0573. 0x4D21). It does not have a FM tuner.
* - Added the real device HAUPPAUGE WINTV-USB II (PAL) to the device structure in usbvision.h.
* - Changes to saa7113-new, the video is 8 bit data for the Phillips SAA7113 not 16bit like SAA7111.
* - Tuned lots of setup registers for the Phillips SAA7113 video chipset.
* - Changes to the supplied makefile. (Dwaine Garden) Still needs to be fixed so it will compile modules on different distrubutions.
*
*
* Aug 10, 2002 - (Thanks Mike Klinke)
* - Changes to usbvision.txt -- Fixed instructions on the location to copy the contents of the tgz file.
* - Added device WinTV-USB FM Model 621 (0x0573. 0x4D30). There is another device which carries the same name. Kept that device in the device structure.
*
* Aug 12, 2002 - Dwaine Garden
* - Added the ability to read the NT100x chip for the MaxISOPacketLength and USB Bandwidth
* Setting of the video device.
* - Adjustments to the SAA7113H code for proper video output.
* - Changes to usbvision.h, so all the devices with FM tuners are working.
*
* Feb 10, 2003 - Joerg Heckenbach
* - fixed endian bug for Motorola PPC
*
* Feb 13, 2003 - Joerg Heckenbach
* - fixed Vin_Reg setting and presetting from usbvision_device_data()
*
* Apr 19, 2003 - Dwaine Garden
* - Fixed compiling errors under RedHat v9.0. from uvirt_to_kva and usbvision_mmap. (Thanks Cameron Maxwell)
* - Changed pte_offset to pte_offset_kernel.
* - Changed remap_page_range and added additional parameter to function.
* - Change setup parameters for the D-Link V100 USB device
* - Added a new device to the usbvision driver. Pinnacle Studio PCTV USB (PAL) 0x2304 0x0110
* - Screwed up the sourceforge.net cvs respository! 8*)
*
* Apr 22, 2002 - Dwaine Garden
* - Added a new device to the usbvision driver. Dazzle DVC-80 (PAL) 0x07d0 0x0004. (Thanks Carl Anderson)
* - Changes to some of the comments.
*
* June 06, 2002 - Ivan, Dwaine Garden
* - Ivan updates for fine tuning device parameters without driver recompiling. (Ivan)
* - Changes to some of the comments. (Dwaine Garden)
* - Changes to the makefile - Better CPU settings. (Ivan)
* - Changes to device Hauppauge WinTv-USB III (PAL) FM Model 568 - Fine tuning parameters (Ivan)
*
*
* Oct 16, 2003 - 0.9.0 - Joerg Heckenbach
* - Implementation of the first part of the decompression algorithm for intra frames.
* The resolution has to be 320x240. A dynamic adaption of compression deepth is
* missing yet.
*
* Oct 22, 2003 - 0.9.1 - Joerg Heckenbach
* - Implementation of the decompression algorithm for inter frames.
* The resolution still has to be 320x240.
*
* Nov 2003 - Feb 2004 - 0.9.2 to 0.9.3 - Joerg Heckenbach
* - Implement last unknown compressed block type. But color is still noisy.
* - Finding criteria for adaptive compression adjustment.
* - Porting to 2.6 kernels, but still working under 2.4
*
* Feb 04, 2004 - 0.9.4 Joerg Heckenbach
* - Found bug in color decompression. Color is OK now.
*
* Feb 09, 2004 - 0.9.5 Joerg Heckenbach
* - Add auto-recognition of chip type NT1003 or NT1004.
* - Add adaptive compression adjustment.
* - Patched saa7113 multiplexer switching (Thanks to Orlando F.S. Bordoni)
*
* Feb 24, 2004 - 0.9.6 Joerg Heckenbach
* - Add a timer to wait before poweroff at close, to save start time in
* some video applications
*
* Mar 4, 2004 - 0.9.6 Dwaine Garden
* - Added device Global Village GV-007 (NTSC) to usbvision.h (Thanks to Abe Skolnik)
* - Forgot to add this device to the driver. 8*)
*
* June 2, 2004 - 0.9.6 Dwaine Garden
* - Fixed sourceforge.net cvs repository.
* - Added #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,26) for .owner to help compiling under kernels 2.4.x which do not have the i2c v2.8.x updates.
* - Added device Hauppauge WinTv-USB III (PAL) FM Model 597 to usbvision.h
*
* July 1, 2004 -0.9.6 Dwaine Garden
* - Patch was submitted by Hal Finkel to fix the problem with the tuner not working under kernel 2.6.7.
* - Thanks Hal.....
*
* July 30, 2004 - 0.9.6 Dwaine Garden
* - Patch was submitted by Tobias Diaz to fix Model ID mismatch in usbvision.h.
* - Thanks.....
*
* August 12, 2004 - 0.9.6 Dwaine Garden
* - Updated the readme file so people could install the driver under the configuration file for kernel 2.6.x recompiles. Now people can use make xconfig!
* - Added new device "Camtel Technology Corp TVB330-USB FM".
* - Sourceforge.net CVS has been updated with all the changes.
*
* August 20, 2004 - 0.9.7 Dwaine Garden
* - Added Device "Hauppauge USB Live Model 600"
* - Fixed up all the devices which did not have a default tuner type in usbvision.h. It's best guess, at least until someone with the device tells me otherwise.
* - Sourceforge.net CVS has been updated with all the changes.
* - Clean up the driver.
*
* September 13, 2004 - 0.9.8 Dwaine Garden
* - Changed usbvision_muxsel to address the problem with black & white s-video output for NT1004 devices with saa7114 video decoder. Thanks to Emmanuel for the patch and testing.
* - Fixed up SECAM devices which could not properly output video. Changes to usbmuxsel. Thanks to Emmanuel for the patch and everyone with a SECAM device which help test.
* - Removed some commented out code. Clean up.
* - Tried to fix up the annoying empty directories in the sourceforge.net cvs. Fuck it up again. 8*(
*
* November 15, 2004 - 0.9.8 Dwaine Garden
* - Release new tar - 0.9.8 on sourceforge.net
* - Added some new devices to usbvision.h WinTV USB Model 602 40201 Rev B282, Hauppague WinTV USB Model 602 40201 Rev B285
* - Added better compatibility for 2.6.x kernels.
* - Hardware full screen scaling in grabdisplay mode.
* - Better support for sysfs. More code to follow for both video device and radio device. Device information is located at /sys/class/video4linux/video0
* - Added module_param so loaded module parameters are displayed in sysfs. Driver parameters should show up in /sys/module/usbvision
* - Adjusted the SAA7111 registers to match the 2.6.x kernel SAA7111 code. Thanks to the person which helped test.
* - Changed to wait_event_interruptible. For all the people running Fedora 2.
* - Added some screenshots of actual video captures on sourceforge.net.
*
* November 24, 2004 - 0.9.8.1cvs Dwaine Garden
* - Added patch to check for palette and format in VIDIOCSPICT. Helix Producer should work fine with the driver now. Thanks Jason Simpson
* - Two device description changes and two additions for the maintainer of usb.ids.
*
* December 2, 2004 - 0.9.8.1cvs Dwaine Garden
* - Added patch for YUV420P and YUV422P video output. Thanks to Alex Smith.
* - Better support for mythtv.
*
* January 2, 2005 - 0.9.8.1cvs Dwaine Garden
* - Setup that you can specify which device is used for video. Default is auto detect next available device number eg. /dev/videoX
* - Setup that you can specify which device is used for radio. Default is auto detect next available device number eg. /dev/radioX
* - usb_unlink_urb() is deprecated for synchronous unlinks. Using usb_kill_urb instead.
* - usbvision_kvirt_to_pa is deprecated. Removed.
* - Changes are related to kernel changes for 2.6.10. (Fedora 4)
*
* February 2, 2005 - 0.9.8.1cvs Dwaine Garden
* - Added a new device to usbvision.h Dazzle DVC 50. Thanks to Luiz S.
*
* March 29, 2005 - 0.9.8.1cvs Dwaine Garden
* - Fixed compile error with saa7113 under kernels 2.6.11+
* - Added module parameter to help people with Black and White output with using s-video input. Some cables and input device are wired differently.
* - Removed the .id from the i2c usbvision template. There was a change to the i2c with kernels 2.6.11+.
*
* April 9, 2005 - 0.9.8.1cvs Dwaine Garden
* - Added in the 2.4 and 2.6 readme files the SwitchSVideoInput parameter information. This will help people setup the right values for the parameter.
* If your device experiences Black and White images with the S-Video Input. Set this parameter to 1 when loading the module.
* - Replaced the wrong 2.6 readme file. I lost the right version. Someone sent me the right version by e-mail. Thanks.
* - Released new module version on sourceforge.net. So everyone can enjoy all the fixes and additional device support.
*
* April 20, 2005 - 0.9.8.2cvs Dwaine Garden
* - Release lock in usbvision_v4l_read_done. -Thanks to nplanel for the patch.
* - Additional comments to the driver.
* - Fixed some spelling mistakes. 8*)
*
* April 23, 2005 - 0.9.8.2cvs Joerg Heckenbach
* - Found bug in usbvision line counting. Now there should be no spurious lines in the image any longer.
* - Swapped usbvision_register_video and usbvision_configure_video to fix problem with PowerOnAtOpen=0.
* Thanks to Erwan Velu
*
* April 26, 2005 - 0.9.8.2cvs Joerg Heckenbach
* - Fixed problem with rmmod module and oppses. Replaced vfree(usbvision->overlay_base) with iounmap(usbvision->overlay_base).
* - Added function usb_get_dev(dev) and ; To help with unloading the module multiple times without crashing.
* (Keep the reference count in kobjects correct)
*
* June 14, 2005 - 0.9.8.2cvs Dwaine
* - Missed a change in saa7113.c for checking kernel version. Added conditional if's.
*
* June 15, 2005 - 0.9.8.2cvs Dwaine
* - Added new device WinTV device VendorId 0573 and ProductId 4d29.
* - Hacked some support for newer NT1005 devices. This devices only seem to have one configuration, not multiple configurations like the NT1004.
*
* June 29, 2005 - 0.9.8.2cvs Dwaine
* - Added new device WinTV device VendorId 0573 and ProductId 4d37.
* - Because of the first empty entry in usbvision_table, modutils failed to create the necessary entries for modules.usbmap.
* This means hotplug won't work for usbvision. Thanks to Gary Ng.
* - Sent an e-mail to the maintainer of usb.ids. New devices identified need to be added.
* - Fixed compile error with saa7113 under kernel 2.6.12.
*
* July 6, 2005 - 0.9.8.2cvs Dwaine
* - Patch submitted by Gary Ng for two additional procfs entries. Device Input and Frequency setting.
*
* July 12, 2005 - 0.9.8.2cvs Dwaine
* - New tuner identified for some devices it's called TCL_MFPE05. This tuner uses the same API as tuner 38 in tuner.c.
* - Thanks to lynx31 for contacting Hauppage and asking them.
* - I have no clue as to which devices use this new tuner, so people will have to contact me and tell me.
*
* July 21, 2005 - 0.9.8.2cvs Dwaine
* - Patched usbvision.c with missing ifdef kernversion statement so the module will compile with older kernels and v4l.
* - Thanks to cipe007......
*
* May 19, 2006 - 0.9.8.3cvs Dwaine
* - Patched usbvision.c and i2c-algo.c so they will compile with kernel 2.6.16
* - Adjust device "Pinnacle Studio PCTV USB (PAL) FM" values in usbvision.h
*
* May 24, 2006 - 0.9.8.3cvs Dwaine
* -Pinnacle Studio PCTV USB (NTSC) FM uses saa7111, not saa7113 like first thought.
* -Updated usbvision.h
*
* Aug 15, 2006 - 0.9.8.3cvs Dwaine
* -Added saa711x module into cvs, since the newer saa7115 module in newer kernels is v4l2. The usbvision driver is only v4l.
* -Updated makefile to put compiled modules into correct location.
*
* Aug 21, 2006 - 0.9.8.3cvs Dwaine
* -Changed number of bytes for i2c write to 4 as per the NT100X spec sheet. Thanks to Merlum for finding it.
* -Remove the radio option for device Hauppauge WinTV USB device Model 40219 Rev E189. This device does not have a FM radio. Thanks to Shadwell.
* -Added radio option for device Hauppauge WinTV USB device Model 40219 Rev E189 again. Just got an e-mail indicating their device has one. 8*)
*
* Aug 27, 2006 - 0.9.8.3cvs Dwaine
* -Changed ifdef statement so the usbvision driver will compile with kernels at 2.6.12.
* -Updated readme files for new updated tuner list for v4l devices.
*
*
*
* TODO:
* - use submit_urb for all setup packets
* - Fix memory settings for nt1004. It is 4 times as big as the
* nt1003 memory.
* - Add audio on endpoint 3 for nt1004 chip. Seems impossible, needs a codec interface. Which one?
* - Clean up the driver.
* - optimization for performance.
* - Add Videotext capability (VBI). Working on it.....
* - Check audio for other devices
* - Add v4l2 interface
*
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/utsname.h>
#include <linux/highmem.h>
#include <linux/smp_lock.h>
#include <linux/videodev.h>
#include <linux/vmalloc.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <asm/io.h>
#include <linux/videodev2.h>
#include <linux/video_decoder.h>
#include <linux/i2c.h>
#define USBVISION_DRIVER_VERSION_MAJOR 0
#define USBVISION_DRIVER_VERSION_MINOR 8
#define USBVISION_DRIVER_VERSION_PATCHLEVEL 0
#define USBVISION_VERSION __stringify(USBVISION_DRIVER_VERSION_MAJOR) "." __stringify(USBVISION_DRIVER_VERSION_MINOR) "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL) " " USBVISION_DRIVER_VERSION_COMMENT
#define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,USBVISION_DRIVER_VERSION_MINOR,USBVISION_DRIVER_VERSION_PATCHLEVEL)
#include <media/saa7115.h>
#include <media/v4l2-common.h>
#include <media/tuner.h>
#include <media/audiochip.h>
#include <linux/moduleparam.h>
#include <linux/workqueue.h>
#ifdef CONFIG_KMOD
#include <linux/kmod.h>
#endif
#include "usbvision.h"
#define DRIVER_VERSION "0.9.8.3cvs for Linux kernels 2.4.19-2.4.32 + 2.6.0-2.6.17, compiled at "__DATE__", "__TIME__
#define EMAIL "joerg@heckenbach-aw.de"
#define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>, Dwaine Garden <DwaineGarden@rogers.com>"
#define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
#define DRIVER_LICENSE "GPL"
#define DRIVER_ALIAS "USBVision"
#define ENABLE_HEXDUMP 0 /* Enable if you need it */
#define USBVISION_DEBUG /* Turn on debug messages */
#ifdef USBVISION_DEBUG
#define PDEBUG(level, fmt, args...) \
if (debug & (level)) info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args)
#else
#define PDEBUG(level, fmt, args...) do {} while(0)
#endif
#define DBG_IOCTL 1<<3
#define DBG_IO 1<<4
#define DBG_RIO 1<<5
#define DBG_HEADER 1<<7
#define DBG_PROBE 1<<8
#define DBG_IRQ 1<<9
#define DBG_ISOC 1<<10
#define DBG_PARSE 1<<11
#define DBG_SCRATCH 1<<12
#define DBG_FUNC 1<<13
#define DBG_I2C 1<<14
#define DEBUG(x...) /* General Debug */
#define IODEBUG(x...) /* Debug IO */
#define OVDEBUG(x...) /* Debug overlay */
#define MDEBUG(x...) /* Debug memory management */
//String operations
#define rmspace(str) while(*str==' ') str++;
#define goto2next(str) while(*str!=' ') str++; while(*str==' ') str++;
static int usbvision_nr = 0; // sequential number of usbvision device
static unsigned long usbvision_timestamp = 0; // timestamp in jiffies of a hundred frame
static unsigned long usbvision_counter = 0; // frame counter
static const int max_imgwidth = MAX_FRAME_WIDTH;
static const int max_imgheight = MAX_FRAME_HEIGHT;
static const int min_imgwidth = MIN_FRAME_WIDTH;
static const int min_imgheight = MIN_FRAME_HEIGHT;
#define FRAMERATE_MIN 0
#define FRAMERATE_MAX 31
enum {
ISOC_MODE_YUV422 = 0x03,
ISOC_MODE_YUV420 = 0x14,
ISOC_MODE_COMPRESS = 0x60,
};
static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
{ 1, 1, 8, V4L2_PIX_FMT_GREY , "GREY" },
{ 1, 2, 16, V4L2_PIX_FMT_RGB565 , "RGB565" },
{ 1, 3, 24, V4L2_PIX_FMT_RGB24 , "RGB24" },
{ 1, 4, 32, V4L2_PIX_FMT_RGB32 , "RGB32" },
{ 1, 2, 16, V4L2_PIX_FMT_RGB555 , "RGB555" },
{ 1, 2, 16, V4L2_PIX_FMT_YUYV , "YUV422" },
{ 1, 2, 12, V4L2_PIX_FMT_YVU420 , "YUV420P" }, // 1.5 !
{ 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
};
/* supported tv norms */
static struct usbvision_tvnorm tvnorms[] = {
{
.name = "PAL",
.id = V4L2_STD_PAL,
}, {
.name = "NTSC",
.id = V4L2_STD_NTSC,
}, {
.name = "SECAM",
.id = V4L2_STD_SECAM,
}, {
.name = "PAL-M",
.id = V4L2_STD_PAL_M,
}
};
#define TVNORMS ARRAY_SIZE(tvnorms)
/*
* The value of 'scratch_buf_size' affects quality of the picture
* in many ways. Shorter buffers may cause loss of data when client
* is too slow. Larger buffers are memory-consuming and take longer
* to work with. This setting can be adjusted, but the default value
* should be OK for most desktop users.
*/
#define DEFAULT_SCRATCH_BUF_SIZE (0x20000) // 128kB memory scratch buffer
static const int scratch_buf_size = DEFAULT_SCRATCH_BUF_SIZE;
// Function prototypes
static int usbvision_restart_isoc(struct usb_usbvision *usbvision);
static int usbvision_begin_streaming(struct usb_usbvision *usbvision);
static int usbvision_muxsel(struct usb_usbvision *usbvision, int channel);
static int usbvision_i2c_write(void *data, unsigned char addr, char *buf, short len);
static int usbvision_i2c_read(void *data, unsigned char addr, char *buf, short len);
static int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg);
static int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg, unsigned char value);
static int usbvision_request_intra (struct usb_usbvision *usbvision);
static int usbvision_unrequest_intra (struct usb_usbvision *usbvision);
static int usbvision_adjust_compression (struct usb_usbvision *usbvision);
static int usbvision_measure_bandwidth (struct usb_usbvision *usbvision);
static void usbvision_release(struct usb_usbvision *usbvision);
static int usbvision_set_input(struct usb_usbvision *usbvision);
static int usbvision_set_output(struct usb_usbvision *usbvision, int width, int height);
static void usbvision_empty_framequeues(struct usb_usbvision *dev);
static int usbvision_stream_interrupt(struct usb_usbvision *dev);
static void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd, void *arg);
// Bit flags (options)
#define FLAGS_RETRY_VIDIOCSYNC (1 << 0)
#define FLAGS_MONOCHROME (1 << 1)
#define FLAGS_DISPLAY_HINTS (1 << 2)
#define FLAGS_OSD_STATS (1 << 3)
#define FLAGS_FORCE_TESTPATTERN (1 << 4)
#define FLAGS_SEPARATE_FRAMES (1 << 5)
#define FLAGS_CLEAN_FRAMES (1 << 6)
// Default initalization of device driver parameters
static int flags = 0; // Set the default Overlay Display mode of the device driver
static int debug = 0; // Set the default Debug Mode of the device driver
static int isocMode = ISOC_MODE_COMPRESS; // Set the default format for ISOC endpoint
static int adjustCompression = 1; // Set the compression to be adaptive
static int dga = 1; // Set the default Direct Graphic Access
static int PowerOnAtOpen = 1; // Set the default device to power on at startup
static int SwitchSVideoInput = 0; // To help people with Black and White output with using s-video input. Some cables and input device are wired differently.
static int video_nr = -1; // Sequential Number of Video Device
static int radio_nr = -1; // Sequential Number of Radio Device
static int vbi_nr = -1; // Sequential Number of VBI Device
static char *CustomDevice=NULL; // Set as nothing....
// Grab parameters for the device driver
#if defined(module_param) // Showing parameters under SYSFS
module_param(flags, int, 0444);
module_param(debug, int, 0444);
module_param(isocMode, int, 0444);
module_param(adjustCompression, int, 0444);
module_param(dga, int, 0444);
module_param(PowerOnAtOpen, int, 0444);
module_param(SwitchSVideoInput, int, 0444);
module_param(video_nr, int, 0444);
module_param(radio_nr, int, 0444);
module_param(vbi_nr, int, 0444);
module_param(CustomDevice, charp, 0444);
#else // Old Style
MODULE_PARM(flags, "i"); // Grab the Overlay Display mode of the device driver
MODULE_PARM(debug, "i"); // Grab the Debug Mode of the device driver
MODULE_PARM(isocMode, "i"); // Grab the video format of the video device
MODULE_PARM(adjustCompression, "i"); // Grab the compression to be adaptive
MODULE_PARM(dga, "i"); // Grab the Direct Graphic Access
MODULE_PARM(PowerOnAtOpen, "i"); // Grab the device to power on at startup
MODULE_PARM(SwitchSVideoInput, "i"); // To help people with Black and White output with using s-video input. Some cables and input device are wired differently.
MODULE_PARM(video_nr, "i"); // video_nr option allows to specify a certain /dev/videoX device (like /dev/video0 or /dev/video1 ...)
MODULE_PARM(radio_nr, "i"); // radio_nr option allows to specify a certain /dev/radioX device (like /dev/radio0 or /dev/radio1 ...)
MODULE_PARM(vbi_nr, "i"); // vbi_nr option allows to specify a certain /dev/vbiX device (like /dev/vbi0 or /dev/vbi1 ...)
MODULE_PARM(CustomDevice, "s"); // .... CustomDevice
#endif
MODULE_PARM_DESC(flags, " Set the default Overlay Display mode of the device driver. Default: 0 (Off)");
MODULE_PARM_DESC(debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)");
MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)");
MODULE_PARM_DESC(adjustCompression, " Set the ADPCM compression for the device. Default: 1 (On)");
MODULE_PARM_DESC(dga, " Set the Direct Graphic Access for the device. Default: 1 (On)");
MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened. Default: 1 (On)");
MODULE_PARM_DESC(SwitchSVideoInput, " Set the S-Video input. Some cables and input device are wired differently. Default: 0 (Off)");
MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)");
MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)");
MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX). Default: -1 (autodetect)");
MODULE_PARM_DESC(CustomDevice, " Define the fine tuning parameters for the device. Default: null");
// Misc stuff
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE(DRIVER_LICENSE);
MODULE_VERSION(DRIVER_VERSION);
MODULE_ALIAS(DRIVER_ALIAS);
#ifdef MODULE
static unsigned int autoload = 1;
#else
static unsigned int autoload = 0;
#endif
/****************************************************************************************/
/* SYSFS Code - Copied from the stv680.c usb module. */
/* Device information is located at /sys/class/video4linux/video0 */
/* Device parameters information is located at /sys/module/usbvision */
/* Device USB Information is located at /sys/bus/usb/drivers/USBVision Video Grabber */
/****************************************************************************************/
#define YES_NO(x) ((x) ? "Yes" : "No")
static inline struct usb_usbvision *cd_to_usbvision(struct class_device *cd)
{
struct video_device *vdev = to_video_device(cd);
return video_get_drvdata(vdev);
}
static ssize_t show_version(struct class_device *cd, char *buf)
{
return sprintf(buf, "%s\n", DRIVER_VERSION);
}
static CLASS_DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
static ssize_t show_model(struct class_device *class_dev, char *buf)
{
struct video_device *vdev = to_video_device(class_dev);
struct usb_usbvision *usbvision = video_get_drvdata(vdev);
return sprintf(buf, "%s\n", usbvision_device_data[usbvision->DevModel].ModelString);
}
static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
static ssize_t show_hue(struct class_device *class_dev, char *buf)
{
struct video_device *vdev = to_video_device(class_dev);
struct usb_usbvision *usbvision = video_get_drvdata(vdev);
return sprintf(buf, "%d\n", usbvision->hue >> 8);
}
static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
static ssize_t show_contrast(struct class_device *class_dev, char *buf)
{
struct video_device *vdev = to_video_device(class_dev);
struct usb_usbvision *usbvision = video_get_drvdata(vdev);
return sprintf(buf, "%d\n", usbvision->contrast >> 8);
}
static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
static ssize_t show_brightness(struct class_device *class_dev, char *buf)
{
struct video_device *vdev = to_video_device(class_dev);
struct usb_usbvision *usbvision = video_get_drvdata(vdev);
return sprintf(buf, "%d\n", usbvision->brightness >> 8);
}
static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
static ssize_t show_saturation(struct class_device *class_dev, char *buf)
{
struct video_device *vdev = to_video_device(class_dev);
struct usb_usbvision *usbvision = video_get_drvdata(vdev);
return sprintf(buf, "%d\n", usbvision->saturation >> 8);
}
static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
static ssize_t show_streaming(struct class_device *class_dev, char *buf)
{
struct video_device *vdev = to_video_device(class_dev);
struct usb_usbvision *usbvision = video_get_drvdata(vdev);
return sprintf(buf, "%s\n", YES_NO(usbvision->streaming==Stream_On?1:0));
}
static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
static ssize_t show_overlay(struct class_device *class_dev, char *buf)
{
struct video_device *vdev = to_video_device(class_dev);
struct usb_usbvision *usbvision = video_get_drvdata(vdev);
return sprintf(buf, "%s\n", YES_NO(usbvision->overlay));
}
static CLASS_DEVICE_ATTR(overlay, S_IRUGO, show_overlay, NULL);
static ssize_t show_compression(struct class_device *class_dev, char *buf)
{
struct video_device *vdev = to_video_device(class_dev);
struct usb_usbvision *usbvision = video_get_drvdata(vdev);
return sprintf(buf, "%s\n", YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
}
static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
static ssize_t show_device_bridge(struct class_device *class_dev, char *buf)
{
struct video_device *vdev = to_video_device(class_dev);
struct usb_usbvision *usbvision = video_get_drvdata(vdev);
return sprintf(buf, "%d\n", usbvision->bridgeType);
}
static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
static void usbvision_create_sysfs(struct video_device *vdev)
{
int res;
if (vdev) {
res=video_device_create_file(vdev, &class_device_attr_version);
res=video_device_create_file(vdev, &class_device_attr_model);
res=video_device_create_file(vdev, &class_device_attr_hue);
res=video_device_create_file(vdev, &class_device_attr_contrast);
res=video_device_create_file(vdev, &class_device_attr_brightness);
res=video_device_create_file(vdev, &class_device_attr_saturation);
res=video_device_create_file(vdev, &class_device_attr_streaming);
res=video_device_create_file(vdev, &class_device_attr_overlay);
res=video_device_create_file(vdev, &class_device_attr_compression);
res=video_device_create_file(vdev, &class_device_attr_bridge);
}
}
static void usbvision_remove_sysfs(struct video_device *vdev)
{
if (vdev) {
video_device_remove_file(vdev, &class_device_attr_version);
video_device_remove_file(vdev, &class_device_attr_model);
video_device_remove_file(vdev, &class_device_attr_hue);
video_device_remove_file(vdev, &class_device_attr_contrast);
video_device_remove_file(vdev, &class_device_attr_brightness);
video_device_remove_file(vdev, &class_device_attr_saturation);
video_device_remove_file(vdev, &class_device_attr_streaming);
video_device_remove_file(vdev, &class_device_attr_overlay);
video_device_remove_file(vdev, &class_device_attr_compression);
video_device_remove_file(vdev, &class_device_attr_bridge);
}
}
/*******************************/
/* Memory management functions */
/*******************************/
/*
* Here we want the physical address of the memory.
* This is used when initializing the contents of the area.
*/
void *usbvision_rvmalloc(unsigned long size)
{
void *mem;
unsigned long adr;
size = PAGE_ALIGN(size);
mem = vmalloc_32(size);
if (!mem)
return NULL;
memset(mem, 0, size); /* Clear the ram out, no junk to the user */
adr = (unsigned long) mem;
while (size > 0) {
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
mem_map_reserve(vmalloc_to_page((void *)adr));
#else
SetPageReserved(vmalloc_to_page((void *)adr));
#endif
adr += PAGE_SIZE;
size -= PAGE_SIZE;
}
return mem;
}
void usbvision_rvfree(void *mem, unsigned long size)
{
unsigned long adr;
if (!mem)
return;
adr = (unsigned long) mem;
while ((long) size > 0) {
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
mem_map_unreserve(vmalloc_to_page((void *)adr));
#else
ClearPageReserved(vmalloc_to_page((void *)adr));
#endif
adr += PAGE_SIZE;
size -= PAGE_SIZE;
}
vfree(mem);
}
#if ENABLE_HEXDUMP
static void usbvision_hexdump(const unsigned char *data, int len)
{
char tmp[80];
int i, k;
for (i = k = 0; len > 0; i++, len--) {
if (i > 0 && (i % 16 == 0)) {
printk("%s\n", tmp);
k = 0;
}
k += sprintf(&tmp[k], "%02x ", data[i]);
}
if (k > 0)
printk("%s\n", tmp);
}
#endif
/* These procedures handle the scratch ring buffer */
int scratch_len(struct usb_usbvision *usbvision) /*This returns the amount of data actually in the buffer */
{
int len = usbvision->scratch_write_ptr - usbvision->scratch_read_ptr;
if (len < 0) {
len += scratch_buf_size;
}
PDEBUG(DBG_SCRATCH, "scratch_len() = %d\n", len);
return len;
}
/* This returns the free space left in the buffer */
int scratch_free(struct usb_usbvision *usbvision)
{
int free = usbvision->scratch_read_ptr - usbvision->scratch_write_ptr;
if (free <= 0) {
free += scratch_buf_size;
}
if (free) {
free -= 1; /* at least one byte in the buffer must */
/* left blank, otherwise there is no chance to differ between full and empty */
}
PDEBUG(DBG_SCRATCH, "return %d\n", free);
return free;
}
void *debug_memcpy(void *dest, void *src, size_t len)
{
printk(KERN_DEBUG "memcpy(%p, %p, %d);\n", dest, src, len);
return memcpy(dest, src, len);
}
/* This puts data into the buffer */
int scratch_put(struct usb_usbvision *usbvision, unsigned char *data, int len)
{
int len_part;
if (usbvision->scratch_write_ptr + len < scratch_buf_size) {
memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len);
usbvision->scratch_write_ptr += len;
}
else {
len_part = scratch_buf_size - usbvision->scratch_write_ptr;
memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len_part);
if (len == len_part) {
usbvision->scratch_write_ptr = 0; /* just set write_ptr to zero */
}
else {
memcpy(usbvision->scratch, data + len_part, len - len_part);
usbvision->scratch_write_ptr = len - len_part;
}
}
PDEBUG(DBG_SCRATCH, "len=%d, new write_ptr=%d\n", len, usbvision->scratch_write_ptr);
return len;
}
/* This marks the write_ptr as position of new frame header */
void scratch_mark_header(struct usb_usbvision *usbvision)
{
PDEBUG(DBG_SCRATCH, "header at write_ptr=%d\n", usbvision->scratch_headermarker_write_ptr);
usbvision->scratch_headermarker[usbvision->scratch_headermarker_write_ptr] =
usbvision->scratch_write_ptr;
usbvision->scratch_headermarker_write_ptr += 1;
usbvision->scratch_headermarker_write_ptr %= USBVISION_NUM_HEADERMARKER;
}
/* This gets data from the buffer at the given "ptr" position */
int scratch_get_extra(struct usb_usbvision *usbvision, unsigned char *data, int *ptr, int len)
{
int len_part;
if (*ptr + len < scratch_buf_size) {
memcpy(data, usbvision->scratch + *ptr, len);
*ptr += len;
}
else {
len_part = scratch_buf_size - *ptr;
memcpy(data, usbvision->scratch + *ptr, len_part);
if (len == len_part) {
*ptr = 0; /* just set the y_ptr to zero */
}
else {
memcpy(data + len_part, usbvision->scratch, len - len_part);
*ptr = len - len_part;
}
}
PDEBUG(DBG_SCRATCH, "len=%d, new ptr=%d\n", len, *ptr);
return len;
}
/* This sets the scratch extra read pointer */
void scratch_set_extra_ptr(struct usb_usbvision *usbvision, int *ptr, int len)
{
*ptr = (usbvision->scratch_read_ptr + len)%scratch_buf_size;
PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr);
}
/*This increments the scratch extra read pointer */
void scratch_inc_extra_ptr(int *ptr, int len)
{
*ptr = (*ptr + len) % scratch_buf_size;
PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr);
}
/* This gets data from the buffer */
int scratch_get(struct usb_usbvision *usbvision, unsigned char *data, int len)
{
int len_part;
if (usbvision->scratch_read_ptr + len < scratch_buf_size) {
memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len);
usbvision->scratch_read_ptr += len;
}
else {
len_part = scratch_buf_size - usbvision->scratch_read_ptr;
memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len_part);
if (len == len_part) {
usbvision->scratch_read_ptr = 0; /* just set the read_ptr to zero */
}
else {
memcpy(data + len_part, usbvision->scratch, len - len_part);
usbvision->scratch_read_ptr = len - len_part;
}
}
PDEBUG(DBG_SCRATCH, "len=%d, new read_ptr=%d\n", len, usbvision->scratch_read_ptr);
return len;
}
/* This sets read pointer to next header and returns it */
int scratch_get_header(struct usb_usbvision *usbvision,struct usbvision_frame_header *header)
{
int errCode = 0;
PDEBUG(DBG_SCRATCH, "from read_ptr=%d", usbvision->scratch_headermarker_read_ptr);
while (usbvision->scratch_headermarker_write_ptr -
usbvision->scratch_headermarker_read_ptr != 0) {
usbvision->scratch_read_ptr =
usbvision->scratch_headermarker[usbvision->scratch_headermarker_read_ptr];
usbvision->scratch_headermarker_read_ptr += 1;
usbvision->scratch_headermarker_read_ptr %= USBVISION_NUM_HEADERMARKER;
scratch_get(usbvision, (unsigned char *)header, USBVISION_HEADER_LENGTH);
if ((header->magic_1 == USBVISION_MAGIC_1)
&& (header->magic_2 == USBVISION_MAGIC_2)
&& (header->headerLength == USBVISION_HEADER_LENGTH)) {
errCode = USBVISION_HEADER_LENGTH;
header->frameWidth = header->frameWidthLo + (header->frameWidthHi << 8);
header->frameHeight = header->frameHeightLo + (header->frameHeightHi << 8);
break;
}
}
return errCode;
}
/*This removes len bytes of old data from the buffer */
void scratch_rm_old(struct usb_usbvision *usbvision, int len)
{
usbvision->scratch_read_ptr += len;
usbvision->scratch_read_ptr %= scratch_buf_size;
PDEBUG(DBG_SCRATCH, "read_ptr is now %d\n", usbvision->scratch_read_ptr);
}
/*This resets the buffer - kills all data in it too */
void scratch_reset(struct usb_usbvision *usbvision)
{
PDEBUG(DBG_SCRATCH, "\n");
usbvision->scratch_read_ptr = 0;
usbvision->scratch_write_ptr = 0;
usbvision->scratch_headermarker_read_ptr = 0;
usbvision->scratch_headermarker_write_ptr = 0;
usbvision->isocstate = IsocState_NoFrame;
}
/* Here comes the OVERLAY stuff */
/* Tell the interrupt handler what to to. */
static
void usbvision_cap(struct usb_usbvision* usbvision, int on)
{
DEBUG(printk(KERN_DEBUG "usbvision_cap: overlay was %d, set it to %d\n", usbvision->overlay, on);)
if (on) {
usbvision->overlay = 1;
}
else {
usbvision->overlay = 0;
}
}
/* append a new clipregion to the vector of video_clips */
static
void usbvision_new_clip(struct v4l2_format* vf, struct v4l2_clip* vcp, int x, int y, int w, int h)
{
vcp[vf->fmt.win.clipcount].c.left = x;
vcp[vf->fmt.win.clipcount].c.top = y;
vcp[vf->fmt.win.clipcount].c.width = w;
vcp[vf->fmt.win.clipcount].c.height = h;
vf->fmt.win.clipcount++;
}
#define mark_pixel(x,y) usbvision->clipmask[((x) + (y) * MAX_FRAME_WIDTH)/32] |= 0x00000001<<((x)%32)
#define clipped_pixel(index) usbvision->clipmask[(index)/32] & (0x00000001<<((index)%32))
static
void usbvision_built_overlay(struct usb_usbvision* usbvision, int count, struct v4l2_clip *vcp)
{
usbvision->overlay_win = usbvision->overlay_base +
(signed int)usbvision->vid_win.fmt.win.w.left * usbvision->depth / 8 +
(signed int)usbvision->vid_win.fmt.win.w.top * usbvision->vid_buf.fmt.bytesperline;
IODEBUG(printk(KERN_DEBUG "built_overlay base=%p, win=%p, bpl=%d, clips=%d, size=%dx%d\n",
usbvision->overlay_base, usbvision->overlay_win,
usbvision->vid_buf.fmt.bytesperline, count,
usbvision->vid_win.fmt.win.w.width, usbvision->vid_win.fmt.win.w.height);)
/* Add here generation of clipping mask */
{
int x_start, x_end, y_start, y_end;
int clip_index, x, y;
memset(usbvision->clipmask, 0, USBVISION_CLIPMASK_SIZE);
OVDEBUG(printk(KERN_DEBUG "clips = %d\n", count);)
for(clip_index = 0; clip_index < count; clip_index++) {
OVDEBUG(printk(KERN_DEBUG "clip: %d,%d,%d,%d\n", vcp[clip_index].x,
vcp[clip_index].y,
vcp[clip_index].width,
vcp[clip_index].height);)
x_start = vcp[clip_index].c.left;
if(x_start >= (int)usbvision->vid_win.fmt.win.w.width) {
OVDEBUG(printk(KERN_DEBUG "x_start=%d\n", x_start);)
continue; //clipping window is right of overlay window
}
x_end = x_start + vcp[clip_index].c.width;
if(x_end <= 0) {
OVDEBUG(printk(KERN_DEBUG "x_end=%d\n", x_end);)
continue; //clipping window is left of overlay window
}
y_start = vcp[clip_index].c.top;
if(y_start >= (int)usbvision->vid_win.fmt.win.w.height) {
OVDEBUG(printk(KERN_DEBUG "y_start=%d\n", y_start);)
continue; //clipping window is below overlay window
}
y_end = y_start + vcp[clip_index].c.height;
if(y_end <= 0) {
OVDEBUG(printk(KERN_DEBUG "y_end=%d\n", y_end);)
continue; //clipping window is above overlay window
}
//clip the clipping window
if (x_start < 0) {
x_start = 0;
}
if (x_end > (int)usbvision->vid_win.fmt.win.w.width) {
x_end = (int)usbvision->vid_win.fmt.win.w.width;
}
if (y_start < 0) {
y_start = 0;
}
if (y_end > (int)usbvision->vid_win.fmt.win.w.height) {
y_end = (int)usbvision->vid_win.fmt.win.w.height;
}
OVDEBUG(printk(KERN_DEBUG "clip_o: %d,%d,%d,%d\n", x_start, y_start, x_end, y_end);)
for(y = y_start; y < y_end; y++) {
for(x = x_start; x < x_end; x++) {
mark_pixel(x,y);
}
}
}
}
}
void usbvision_osd_char(struct usb_usbvision *usbvision,
struct usbvision_frame *frame, int x, int y, int ch)
{
static const unsigned short digits[16] = {
0xF6DE, /* 0 */
0x2492, /* 1 */
0xE7CE, /* 2 */
0xE79E, /* 3 */
0xB792, /* 4 */
0xF39E, /* 5 */
0xF3DE, /* 6 */
0xF492, /* 7 */
0xF7DE, /* 8 */
0xF79E, /* 9 */
0x77DA, /* a */
0xD75C, /* b */
0xF24E, /* c */
0xD6DC, /* d */
0xF34E, /* e */
0xF348 /* f */
};
unsigned short digit;
int ix, iy;
if ((usbvision == NULL) || (frame == NULL))
return;
if (ch >= '0' && ch <= '9')
ch -= '0';
else if (ch >= 'A' && ch <= 'F')
ch = 10 + (ch - 'A');
else if (ch >= 'a' && ch <= 'f')
ch = 10 + (ch - 'a');
else
return;
digit = digits[ch];
for (iy = 0; iy < 5; iy++) {
for (ix = 0; ix < 3; ix++) {
if (digit & 0x8000) {
// USBVISION_PUTPIXEL(frame, x + ix, y + iy,
// 0xFF, 0xFF, 0xFF);
}
digit = digit << 1;
}
}
}
void usbvision_osd_string(struct usb_usbvision *usbvision,
struct usbvision_frame *frame,
int x, int y, const char *str)
{
while (*str) {
usbvision_osd_char(usbvision, frame, x, y, *str);
str++;
x += 4; /* 3 pixels character + 1 space */
}
}
/*
* usb_usbvision_osd_stats()
*
* On screen display of important debugging information.
*
*/
void usbvision_osd_stats(struct usb_usbvision *usbvision,
struct usbvision_frame *frame)
{
const int y_diff = 8;
char tmp[16];
int x = 10;
int y = 10;
sprintf(tmp, "%8x", usbvision->frame_num);
usbvision_osd_string(usbvision, frame, x, y, tmp);
y += y_diff;
sprintf(tmp, "%8lx", usbvision->isocUrbCount);
usbvision_osd_string(usbvision, frame, x, y, tmp);
y += y_diff;
sprintf(tmp, "%8lx", usbvision->urb_length);
usbvision_osd_string(usbvision, frame, x, y, tmp);
y += y_diff;
sprintf(tmp, "%8lx", usbvision->isocDataCount);
usbvision_osd_string(usbvision, frame, x, y, tmp);
y += y_diff;
sprintf(tmp, "%8lx", usbvision->header_count);
usbvision_osd_string(usbvision, frame, x, y, tmp);
y += y_diff;
sprintf(tmp, "%8lx", usbvision->scratch_ovf_count);
usbvision_osd_string(usbvision, frame, x, y, tmp);
y += y_diff;
sprintf(tmp, "%8lx", usbvision->isocSkipCount);
usbvision_osd_string(usbvision, frame, x, y, tmp);
y += y_diff;
sprintf(tmp, "%8lx", usbvision->isocErrCount);
usbvision_osd_string(usbvision, frame, x, y, tmp);
y += y_diff;
sprintf(tmp, "%8x", usbvision->saturation);
usbvision_osd_string(usbvision, frame, x, y, tmp);
y += y_diff;
sprintf(tmp, "%8x", usbvision->hue);
usbvision_osd_string(usbvision, frame, x, y, tmp);
y += y_diff;
sprintf(tmp, "%8x", usbvision->brightness >> 8);
usbvision_osd_string(usbvision, frame, x, y, tmp);
y += y_diff;
sprintf(tmp, "%8x", usbvision->contrast >> 12);
usbvision_osd_string(usbvision, frame, x, y, tmp);
y += y_diff;
}
/*
* usbvision_testpattern()
*
* Procedure forms a test pattern (yellow grid on blue background).
*
* Parameters:
* fullframe: if TRUE then entire frame is filled, otherwise the procedure
* continues from the current scanline.
* pmode 0: fill the frame with solid blue color (like on VCR or TV)
* 1: Draw a colored grid
*
*/
void usbvision_testpattern(struct usb_usbvision *usbvision, int fullframe,
int pmode)
{
static const char proc[] = "usbvision_testpattern";
struct usbvision_frame *frame;
unsigned char *f;
int num_cell = 0;
int scan_length = 0;
static int num_pass = 0;
if (usbvision == NULL) {
printk(KERN_ERR "%s: usbvision == NULL\n", proc);
return;
}
if (usbvision->curFrame == NULL) {
printk(KERN_ERR "%s: usbvision->curFrame is NULL.\n", proc);
return;
}
/* Grab the current frame */
frame = usbvision->curFrame;
/* Optionally start at the beginning */
if (fullframe) {
frame->curline = 0;
frame->scanlength = 0;
}
/* Form every scan line */
for (; frame->curline < frame->frmheight; frame->curline++) {
int i;
f = frame->data + (usbvision->curwidth * 3 * frame->curline);
for (i = 0; i < usbvision->curwidth; i++) {
unsigned char cb = 0x80;
unsigned char cg = 0;
unsigned char cr = 0;
if (pmode == 1) {
if (frame->curline % 32 == 0)
cb = 0, cg = cr = 0xFF;
else if (i % 32 == 0) {
if (frame->curline % 32 == 1)
num_cell++;
cb = 0, cg = cr = 0xFF;
} else {
cb =
((num_cell * 7) +
num_pass) & 0xFF;
cg =
((num_cell * 5) +
num_pass * 2) & 0xFF;
cr =
((num_cell * 3) +
num_pass * 3) & 0xFF;
}
} else {
/* Just the blue screen */
}
*f++ = cb;
*f++ = cg;
*f++ = cr;
scan_length += 3;
}
}
frame->grabstate = FrameState_Done;
frame->scanlength += scan_length;
++num_pass;
/* We do this unconditionally, regardless of FLAGS_OSD_STATS */
usbvision_osd_stats(usbvision, frame);
}
/*
* Here comes the data parsing stuff that is run as interrupt
*/
/*
* usbvision_find_header()
*
* Locate one of supported header markers in the scratch buffer.
*/
static enum ParseState usbvision_find_header(struct usb_usbvision *usbvision)
{
struct usbvision_frame *frame;
int foundHeader = 0;
if (usbvision->overlay) {
frame = &usbvision->overlay_frame;
}
else {
frame = usbvision->curFrame;
}
while (scratch_get_header(usbvision, &frame->isocHeader) == USBVISION_HEADER_LENGTH) {
// found header in scratch
PDEBUG(DBG_HEADER, "found header: 0x%02x%02x %d %d %d %d %#x 0x%02x %u %u",
frame->isocHeader.magic_2,
frame->isocHeader.magic_1,
frame->isocHeader.headerLength,
frame->isocHeader.frameNum,
frame->isocHeader.framePhase,
frame->isocHeader.frameLatency,
frame->isocHeader.dataFormat,
frame->isocHeader.formatParam,
frame->isocHeader.frameWidth,
frame->isocHeader.frameHeight);
if (usbvision->requestIntra) {
if (frame->isocHeader.formatParam & 0x80) {
foundHeader = 1;
usbvision->lastIsocFrameNum = -1; // do not check for lost frames this time
usbvision_unrequest_intra(usbvision);
break;
}
}
else {
foundHeader = 1;
break;
}
}
if (foundHeader) {
frame->frmwidth = frame->isocHeader.frameWidth * usbvision->stretch_width;
frame->frmheight = frame->isocHeader.frameHeight * usbvision->stretch_height;
frame->v4l2_linesize = (frame->frmwidth * frame->v4l2_format.depth)>> 3;
}
else { // no header found
PDEBUG(DBG_HEADER, "skipping scratch data, no header");
scratch_reset(usbvision);
return ParseState_EndParse;
}
// found header
if (frame->isocHeader.dataFormat==ISOC_MODE_COMPRESS) {
//check isocHeader.frameNum for lost frames
if (usbvision->lastIsocFrameNum >= 0) {
if (((usbvision->lastIsocFrameNum + 1) % 32) != frame->isocHeader.frameNum) {
// unexpected frame drop: need to request new intra frame
PDEBUG(DBG_HEADER, "Lost frame before %d on USB", frame->isocHeader.frameNum);
usbvision_request_intra(usbvision);
return ParseState_NextFrame;
}
}
usbvision->lastIsocFrameNum = frame->isocHeader.frameNum;
}
usbvision->header_count++;
frame->scanstate = ScanState_Lines;
frame->curline = 0;
if (flags & FLAGS_FORCE_TESTPATTERN) {
usbvision_testpattern(usbvision, 1, 1);
return ParseState_NextFrame;
}
return ParseState_Continue;
}
static enum ParseState usbvision_parse_lines_422(struct usb_usbvision *usbvision,
long *pcopylen)
{
volatile struct usbvision_frame *frame;
unsigned char *f;
int len;
int i;
unsigned char yuyv[4]={180, 128, 10, 128}; // YUV components
unsigned char rv, gv, bv; // RGB components
int clipmask_index, bytes_per_pixel;
int overlay = usbvision->overlay;
int stretch_bytes, clipmask_add;
if (overlay) {
frame = &usbvision->overlay_frame;
if (usbvision->overlay_base == NULL) {
//video_buffer is not set yet
return ParseState_NextFrame;
}
f = usbvision->overlay_win + frame->curline *
usbvision->vid_buf.fmt.bytesperline;
}
else {
frame = usbvision->curFrame;
f = frame->data + (frame->v4l2_linesize * frame->curline);
}
/* Make sure there's enough data for the entire line */
len = (frame->isocHeader.frameWidth * 2)+5;
if (scratch_len(usbvision) < len) {
PDEBUG(DBG_PARSE, "out of data in line %d, need %u.\n", frame->curline, len);
return ParseState_Out;
}
if ((frame->curline + 1) >= frame->frmheight) {
return ParseState_NextFrame;
}
bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;
stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel;
clipmask_index = frame->curline * MAX_FRAME_WIDTH;
clipmask_add = usbvision->stretch_width;
for (i = 0; i < frame->frmwidth; i+=(2 * usbvision->stretch_width)) {
scratch_get(usbvision, &yuyv[0], 4);
if((overlay) && (clipped_pixel(clipmask_index))) {
f += bytes_per_pixel;
}
else if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
*f++ = yuyv[0]; // Y
*f++ = yuyv[3]; // U
}
else {
YUV_TO_RGB_BY_THE_BOOK(yuyv[0], yuyv[1], yuyv[3], rv, gv, bv);
switch (frame->v4l2_format.format) {
case V4L2_PIX_FMT_RGB565:
*f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3));
*f++ = (0x07 & (gv >> 5)) | (0xF8 & rv);
break;
case V4L2_PIX_FMT_RGB24:
*f++ = bv;
*f++ = gv;
*f++ = rv;
break;
case V4L2_PIX_FMT_RGB32:
*f++ = bv;
*f++ = gv;
*f++ = rv;
f++;
break;
case V4L2_PIX_FMT_RGB555:
*f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2));
*f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1));
break;
}
}
clipmask_index += clipmask_add;
f += stretch_bytes;
if((overlay) && (clipped_pixel(clipmask_index))) {
f += bytes_per_pixel;
}
else if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
*f++ = yuyv[2]; // Y
*f++ = yuyv[1]; // V
}
else {
YUV_TO_RGB_BY_THE_BOOK(yuyv[2], yuyv[1], yuyv[3], rv, gv, bv);
switch (frame->v4l2_format.format) {
case V4L2_PIX_FMT_RGB565:
*f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3));
*f++ = (0x07 & (gv >> 5)) | (0xF8 & rv);
break;
case V4L2_PIX_FMT_RGB24:
*f++ = bv;
*f++ = gv;
*f++ = rv;
break;
case V4L2_PIX_FMT_RGB32:
*f++ = bv;
*f++ = gv;
*f++ = rv;
f++;
break;
case V4L2_PIX_FMT_RGB555:
*f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2));
*f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1));
break;
}
}
clipmask_index += clipmask_add;
f += stretch_bytes;
}
frame->curline += usbvision->stretch_height;
*pcopylen += frame->v4l2_linesize * usbvision->stretch_height;
if (frame->curline >= frame->frmheight) {
return ParseState_NextFrame;
}
else {
return ParseState_Continue;
}
}
static int usbvision_decompress(struct usb_usbvision *usbvision,unsigned char *Compressed,
unsigned char *Decompressed, int *StartPos,
int *BlockTypeStartPos, int Len)
{
int RestPixel, Idx, MaxPos, Pos, ExtraPos, BlockLen, BlockTypePos, BlockTypeLen;
unsigned char BlockByte, BlockCode, BlockType, BlockTypeByte, Integrator;
Integrator = 0;
Pos = *StartPos;
BlockTypePos = *BlockTypeStartPos;
MaxPos = 396; //Pos + Len;
ExtraPos = Pos;
BlockLen = 0;
BlockByte = 0;
BlockCode = 0;
BlockType = 0;
BlockTypeByte = 0;
BlockTypeLen = 0;
RestPixel = Len;
for (Idx = 0; Idx < Len; Idx++) {
if (BlockLen == 0) {
if (BlockTypeLen==0) {
BlockTypeByte = Compressed[BlockTypePos];
BlockTypePos++;
BlockTypeLen = 4;
}
BlockType = (BlockTypeByte & 0xC0) >> 6;
//statistic:
usbvision->ComprBlockTypes[BlockType]++;
Pos = ExtraPos;
if (BlockType == 0) {
if(RestPixel >= 24) {
Idx += 23;
RestPixel -= 24;
Integrator = Decompressed[Idx];
} else {
Idx += RestPixel - 1;
RestPixel = 0;
}
} else {
BlockCode = Compressed[Pos];
Pos++;
if (RestPixel >= 24) {
BlockLen = 24;
} else {
BlockLen = RestPixel;
}
RestPixel -= BlockLen;
ExtraPos = Pos + (BlockLen / 4);
}
BlockTypeByte <<= 2;
BlockTypeLen -= 1;
}
if (BlockLen > 0) {
if ((BlockLen%4) == 0) {
BlockByte = Compressed[Pos];
Pos++;
}
if (BlockType == 1) { //inter Block
Integrator = Decompressed[Idx];
}
switch (BlockByte & 0xC0) {
case 0x03<<6:
Integrator += Compressed[ExtraPos];
ExtraPos++;
break;
case 0x02<<6:
Integrator += BlockCode;
break;
case 0x00:
Integrator -= BlockCode;
break;
}
Decompressed[Idx] = Integrator;
BlockByte <<= 2;
BlockLen -= 1;
}
}
*StartPos = ExtraPos;
*BlockTypeStartPos = BlockTypePos;
return Idx;
}
/*
* usbvision_parse_compress()
*
* Parse compressed frame from the scratch buffer, put
* decoded RGB value into the current frame buffer and add the written
* number of bytes (RGB) to the *pcopylen.
*
*/
static enum ParseState usbvision_parse_compress(struct usb_usbvision *usbvision,
long *pcopylen)
{
#define USBVISION_STRIP_MAGIC 0x5A
#define USBVISION_STRIP_LEN_MAX 400
#define USBVISION_STRIP_HEADER_LEN 3
struct usbvision_frame *frame;
unsigned char *f,*u = NULL ,*v = NULL;
unsigned char StripData[USBVISION_STRIP_LEN_MAX];
unsigned char StripHeader[USBVISION_STRIP_HEADER_LEN];
int Idx, IdxEnd, StripLen, StripPtr, StartBlockPos, BlockPos, BlockTypePos;
int clipmask_index, bytes_per_pixel, rc;
int overlay = usbvision->overlay;
int imageSize;
unsigned char rv, gv, bv;
static unsigned char *Y, *U, *V;
if (overlay) {
frame = &usbvision->overlay_frame;
imageSize = frame->frmwidth * frame->frmheight;
if (usbvision->overlay_base == NULL) {
//video_buffer is not set yet
return ParseState_NextFrame;
}
f = usbvision->overlay_win + frame->curline *
usbvision->vid_buf.fmt.bytesperline;
}
else {
frame = usbvision->curFrame;
imageSize = frame->frmwidth * frame->frmheight;
if ( (frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) ||
(frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) )
{ // this is a planar format
//... v4l2_linesize not used here.
f = frame->data + (frame->width * frame->curline);
} else
f = frame->data + (frame->v4l2_linesize * frame->curline);
if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV){ //initialise u and v pointers
// get base of u and b planes add halfoffset
u = frame->data
+ imageSize
+ (frame->frmwidth >>1) * frame->curline ;
v = u + (imageSize >>1 );
} else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420){
v = frame->data + imageSize + ((frame->curline* (frame->width))>>2) ;
u = v + (imageSize >>2) ;
}
}
if (frame->curline == 0) {
usbvision_adjust_compression(usbvision);
}
if (scratch_len(usbvision) < USBVISION_STRIP_HEADER_LEN) {
return ParseState_Out;
}
//get strip header without changing the scratch_read_ptr
scratch_set_extra_ptr(usbvision, &StripPtr, 0);
scratch_get_extra(usbvision, &StripHeader[0], &StripPtr,
USBVISION_STRIP_HEADER_LEN);
if (StripHeader[0] != USBVISION_STRIP_MAGIC) {
// wrong strip magic
usbvision->stripMagicErrors++;
return ParseState_NextFrame;
}
if (frame->curline != (int)StripHeader[2]) {
//line number missmatch error
usbvision->stripLineNumberErrors++;
}
StripLen = 2 * (unsigned int)StripHeader[1];
if (StripLen > USBVISION_STRIP_LEN_MAX) {
// strip overrun
// I think this never happens
usbvision_request_intra(usbvision);
}
if (scratch_len(usbvision) < StripLen) {
//there is not enough data for the strip
return ParseState_Out;
}
if (usbvision->IntraFrameBuffer) {
Y = usbvision->IntraFrameBuffer + frame->frmwidth * frame->curline;
U = usbvision->IntraFrameBuffer + imageSize + (frame->frmwidth / 2) * (frame->curline / 2);
V = usbvision->IntraFrameBuffer + imageSize / 4 * 5 + (frame->frmwidth / 2) * (frame->curline / 2);
}
else {
return ParseState_NextFrame;
}
bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;
clipmask_index = frame->curline * MAX_FRAME_WIDTH;
scratch_get(usbvision, StripData, StripLen);
IdxEnd = frame->frmwidth;
BlockTypePos = USBVISION_STRIP_HEADER_LEN;
StartBlockPos = BlockTypePos + (IdxEnd - 1) / 96 + (IdxEnd / 2 - 1) / 96 + 2;
BlockPos = StartBlockPos;
usbvision->BlockPos = BlockPos;
if ((rc = usbvision_decompress(usbvision, StripData, Y, &BlockPos, &BlockTypePos, IdxEnd)) != IdxEnd) {
//return ParseState_Continue;
}
if (StripLen > usbvision->maxStripLen) {
usbvision->maxStripLen = StripLen;
}
if (frame->curline%2) {
if ((rc = usbvision_decompress(usbvision, StripData, V, &BlockPos, &BlockTypePos, IdxEnd/2)) != IdxEnd/2) {
//return ParseState_Continue;
}
}
else {
if ((rc = usbvision_decompress(usbvision, StripData, U, &BlockPos, &BlockTypePos, IdxEnd/2)) != IdxEnd/2) {
//return ParseState_Continue;
}
}
if (BlockPos > usbvision->comprBlockPos) {
usbvision->comprBlockPos = BlockPos;
}
if (BlockPos > StripLen) {
usbvision->stripLenErrors++;
}
for (Idx = 0; Idx < IdxEnd; Idx++) {
if((overlay) && (clipped_pixel(clipmask_index))) {
f += bytes_per_pixel;
}
else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
*f++ = Y[Idx];
*f++ = Idx & 0x01 ? U[Idx/2] : V[Idx/2];
}
else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) {
*f++ = Y[Idx];
if ( Idx & 0x01)
*u++ = U[Idx>>1] ;
else
*v++ = V[Idx>>1];
}
else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) {
*f++ = Y [Idx];
if ( !(( Idx & 0x01 ) | ( frame->curline & 0x01 )) ){
/* only need do this for 1 in 4 pixels */
/* intraframe buffer is YUV420 format */
*u++ = U[Idx >>1];
*v++ = V[Idx >>1];
}
}
else {
YUV_TO_RGB_BY_THE_BOOK(Y[Idx], U[Idx/2], V[Idx/2], rv, gv, bv);
switch (frame->v4l2_format.format) {
case V4L2_PIX_FMT_GREY:
*f++ = Y[Idx];
break;
case V4L2_PIX_FMT_RGB555:
*f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2));
*f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1));
break;
case V4L2_PIX_FMT_RGB565:
*f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3));
*f++ = (0x07 & (gv >> 5)) | (0xF8 & rv);
break;
case V4L2_PIX_FMT_RGB24:
*f++ = bv;
*f++ = gv;
*f++ = rv;
break;
case V4L2_PIX_FMT_RGB32:
*f++ = bv;
*f++ = gv;
*f++ = rv;
f++;
break;
}
}
clipmask_index++;
}
/* Deal with non-integer no. of bytes for YUV420P */
if (frame->v4l2_format.format != V4L2_PIX_FMT_YVU420 )
*pcopylen += frame->v4l2_linesize;
else
*pcopylen += frame->curline & 0x01 ? frame->v4l2_linesize : frame->v4l2_linesize << 1;
frame->curline += 1;
if (frame->curline >= frame->frmheight) {
return ParseState_NextFrame;
}
else {
return ParseState_Continue;
}
}
/*
* usbvision_parse_lines_420()
*
* Parse two lines from the scratch buffer, put
* decoded RGB value into the current frame buffer and add the written
* number of bytes (RGB) to the *pcopylen.
*
*/
static enum ParseState usbvision_parse_lines_420(struct usb_usbvision *usbvision,
long *pcopylen)
{
struct usbvision_frame *frame;
unsigned char *f_even = NULL, *f_odd = NULL;
unsigned int pixel_per_line, block;
int pixel, block_split;
int y_ptr, u_ptr, v_ptr, y_odd_offset;
const int y_block_size = 128;
const int uv_block_size = 64;
const int sub_block_size = 32;
const int y_step[] = { 0, 0, 0, 2 }, y_step_size = 4;
const int uv_step[]= { 0, 0, 0, 4 }, uv_step_size = 4;
unsigned char y[2], u, v; /* YUV components */
int y_, u_, v_, vb, uvg, ur;
int r_, g_, b_; /* RGB components */
unsigned char g;
int clipmask_even_index, clipmask_odd_index, bytes_per_pixel;
int clipmask_add, stretch_bytes;
int overlay = usbvision->overlay;
if (overlay) {
frame = &usbvision->overlay_frame;
if (usbvision->overlay_base == NULL) {
//video_buffer is not set yet
return ParseState_NextFrame;
}
f_even = usbvision->overlay_win + frame->curline *
usbvision->vid_buf.fmt.bytesperline;
f_odd = f_even + usbvision->vid_buf.fmt.bytesperline * usbvision->stretch_height;
}
else {
frame = usbvision->curFrame;
f_even = frame->data + (frame->v4l2_linesize * frame->curline);
f_odd = f_even + frame->v4l2_linesize * usbvision->stretch_height;
}
/* Make sure there's enough data for the entire line */
/* In this mode usbvision transfer 3 bytes for every 2 pixels */
/* I need two lines to decode the color */
bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;
stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel;
clipmask_even_index = frame->curline * MAX_FRAME_WIDTH;
clipmask_odd_index = clipmask_even_index + MAX_FRAME_WIDTH;
clipmask_add = usbvision->stretch_width;
pixel_per_line = frame->isocHeader.frameWidth;
if (scratch_len(usbvision) < (int)pixel_per_line * 3) {
//printk(KERN_DEBUG "out of data, need %d\n", len);
return ParseState_Out;
}
if ((frame->curline + 1) >= frame->frmheight) {
return ParseState_NextFrame;
}
block_split = (pixel_per_line%y_block_size) ? 1 : 0; //are some blocks splitted into different lines?
y_odd_offset = (pixel_per_line / y_block_size) * (y_block_size + uv_block_size)
+ block_split * uv_block_size;
scratch_set_extra_ptr(usbvision, &y_ptr, y_odd_offset);
scratch_set_extra_ptr(usbvision, &u_ptr, y_block_size);
scratch_set_extra_ptr(usbvision, &v_ptr, y_odd_offset
+ (4 - block_split) * sub_block_size);
for (block = 0; block < (pixel_per_line / sub_block_size);
block++) {
for (pixel = 0; pixel < sub_block_size; pixel +=2) {
scratch_get(usbvision, &y[0], 2);
scratch_get_extra(usbvision, &u, &u_ptr, 1);
scratch_get_extra(usbvision, &v, &v_ptr, 1);
//I don't use the YUV_TO_RGB macro for better performance
v_ = v - 128;
u_ = u - 128;
vb = 132252 * v_;
uvg= -53281 * u_ - 25625 * v_;
ur = 104595 * u_;
if((overlay) && (clipped_pixel(clipmask_even_index))) {
f_even += bytes_per_pixel;
}
else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
*f_even++ = y[0];
*f_even++ = v;
}
else {
y_ = 76284 * (y[0] - 16);
b_ = (y_ + vb) >> 16;
g_ = (y_ + uvg)>> 16;
r_ = (y_ + ur) >> 16;
switch (frame->v4l2_format.format) {
case V4L2_PIX_FMT_RGB565:
g = LIMIT_RGB(g_);
*f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3));
*f_even++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_));
break;
case V4L2_PIX_FMT_RGB24:
*f_even++ = LIMIT_RGB(b_);
*f_even++ = LIMIT_RGB(g_);
*f_even++ = LIMIT_RGB(r_);
break;
case V4L2_PIX_FMT_RGB32:
*f_even++ = LIMIT_RGB(b_);
*f_even++ = LIMIT_RGB(g_);
*f_even++ = LIMIT_RGB(r_);
f_even++;
break;
case V4L2_PIX_FMT_RGB555:
g = LIMIT_RGB(g_);
*f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2));
*f_even++ = (0x03 & ( g >> 6)) |
(0x7C & (LIMIT_RGB(r_) >> 1));
break;
}
}
clipmask_even_index += clipmask_add;
f_even += stretch_bytes;
if((overlay) && (clipped_pixel(clipmask_even_index))) {
f_even += bytes_per_pixel;
}
else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
*f_even++ = y[1];
*f_even++ = u;
}
else {
y_ = 76284 * (y[1] - 16);
b_ = (y_ + vb) >> 16;
g_ = (y_ + uvg)>> 16;
r_ = (y_ + ur) >> 16;
switch (frame->v4l2_format.format) {
case V4L2_PIX_FMT_RGB565:
g = LIMIT_RGB(g_);
*f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3));
*f_even++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_));
break;
case V4L2_PIX_FMT_RGB24:
*f_even++ = LIMIT_RGB(b_);
*f_even++ = LIMIT_RGB(g_);
*f_even++ = LIMIT_RGB(r_);
break;
case V4L2_PIX_FMT_RGB32:
*f_even++ = LIMIT_RGB(b_);
*f_even++ = LIMIT_RGB(g_);
*f_even++ = LIMIT_RGB(r_);
f_even++;
break;
case V4L2_PIX_FMT_RGB555:
g = LIMIT_RGB(g_);
*f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2));
*f_even++ = (0x03 & ( g >> 6)) |
(0x7C & (LIMIT_RGB(r_) >> 1));
break;
}
}
clipmask_even_index += clipmask_add;
f_even += stretch_bytes;
scratch_get_extra(usbvision, &y[0], &y_ptr, 2);
if ((overlay) && (clipped_pixel(clipmask_odd_index))) {
f_odd += bytes_per_pixel;
}
else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
*f_odd++ = y[0];
*f_odd++ = v;
}
else {
y_ = 76284 * (y[0] - 16);
b_ = (y_ + vb) >> 16;
g_ = (y_ + uvg)>> 16;
r_ = (y_ + ur) >> 16;
switch (frame->v4l2_format.format) {
case V4L2_PIX_FMT_RGB565:
g = LIMIT_RGB(g_);
*f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3));
*f_odd++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_));
break;
case V4L2_PIX_FMT_RGB24:
*f_odd++ = LIMIT_RGB(b_);
*f_odd++ = LIMIT_RGB(g_);
*f_odd++ = LIMIT_RGB(r_);
break;
case V4L2_PIX_FMT_RGB32:
*f_odd++ = LIMIT_RGB(b_);
*f_odd++ = LIMIT_RGB(g_);
*f_odd++ = LIMIT_RGB(r_);
f_odd++;
break;
case V4L2_PIX_FMT_RGB555:
g = LIMIT_RGB(g_);
*f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2));
*f_odd++ = (0x03 & ( g >> 6)) |
(0x7C & (LIMIT_RGB(r_) >> 1));
break;
}
}
clipmask_odd_index += clipmask_add;
f_odd += stretch_bytes;
if((overlay) && (clipped_pixel(clipmask_odd_index))) {
f_odd += bytes_per_pixel;
}
else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
*f_odd++ = y[1];
*f_odd++ = u;
}
else {
y_ = 76284 * (y[1] - 16);
b_ = (y_ + vb) >> 16;
g_ = (y_ + uvg)>> 16;
r_ = (y_ + ur) >> 16;
switch (frame->v4l2_format.format) {
case V4L2_PIX_FMT_RGB565:
g = LIMIT_RGB(g_);
*f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3));
*f_odd++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_));
break;
case V4L2_PIX_FMT_RGB24:
*f_odd++ = LIMIT_RGB(b_);
*f_odd++ = LIMIT_RGB(g_);
*f_odd++ = LIMIT_RGB(r_);
break;
case V4L2_PIX_FMT_RGB32:
*f_odd++ = LIMIT_RGB(b_);
*f_odd++ = LIMIT_RGB(g_);
*f_odd++ = LIMIT_RGB(r_);
f_odd++;
break;
case V4L2_PIX_FMT_RGB555:
g = LIMIT_RGB(g_);
*f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2));
*f_odd++ = (0x03 & ( g >> 6)) |
(0x7C & (LIMIT_RGB(r_) >> 1));
break;
}
}
clipmask_odd_index += clipmask_add;
f_odd += stretch_bytes;
}
scratch_rm_old(usbvision,y_step[block % y_step_size] * sub_block_size);
scratch_inc_extra_ptr(&y_ptr, y_step[(block + 2 * block_split) % y_step_size]
* sub_block_size);
scratch_inc_extra_ptr(&u_ptr, uv_step[block % uv_step_size]
* sub_block_size);
scratch_inc_extra_ptr(&v_ptr, uv_step[(block + 2 * block_split) % uv_step_size]
* sub_block_size);
}
scratch_rm_old(usbvision, pixel_per_line * 3 / 2
+ block_split * sub_block_size);
frame->curline += 2 * usbvision->stretch_height;
*pcopylen += frame->v4l2_linesize * 2 * usbvision->stretch_height;
if (frame->curline >= frame->frmheight)
return ParseState_NextFrame;
else
return ParseState_Continue;
}
/*
* usbvision_parse_data()
*
* Generic routine to parse the scratch buffer. It employs either
* usbvision_find_header() or usbvision_parse_lines() to do most
* of work.
*
*/
static void usbvision_parse_data(struct usb_usbvision *usbvision)
{
struct usbvision_frame *frame;
enum ParseState newstate;
long copylen = 0;
unsigned long lock_flags;
if (usbvision->overlay) {
frame = &usbvision->overlay_frame;
}
else {
frame = usbvision->curFrame;
}
PDEBUG(DBG_PARSE, "parsing len=%d\n", scratch_len(usbvision));
while (1) {
newstate = ParseState_Out;
if (scratch_len(usbvision)) {
if (frame->scanstate == ScanState_Scanning) {
newstate = usbvision_find_header(usbvision);
}
else if (frame->scanstate == ScanState_Lines) {
if (usbvision->isocMode == ISOC_MODE_YUV420) {
newstate = usbvision_parse_lines_420(usbvision, &copylen);
}
else if (usbvision->isocMode == ISOC_MODE_YUV422) {
newstate = usbvision_parse_lines_422(usbvision, &copylen);
}
else if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
newstate = usbvision_parse_compress(usbvision, &copylen);
}
}
}
if (newstate == ParseState_Continue) {
continue;
}
else if ((newstate == ParseState_NextFrame) || (newstate == ParseState_Out)) {
break;
}
else {
return; /* ParseState_EndParse */
}
}
if (newstate == ParseState_NextFrame) {
frame->grabstate = FrameState_Done;
do_gettimeofday(&(frame->timestamp));
frame->sequence = usbvision->frame_num;
if (usbvision->overlay) {
frame->grabstate = FrameState_Grabbing;
frame->scanstate = ScanState_Scanning;
frame->scanlength = 0;
copylen = 0;
}
else {
spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
list_move_tail(&(frame->frame), &usbvision->outqueue);
usbvision->curFrame = NULL;
spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
}
usbvision->frame_num++;
/* Optionally display statistics on the screen */
if (flags & FLAGS_OSD_STATS)
usbvision_osd_stats(usbvision, frame);
/* This will cause the process to request another frame. */
if (waitqueue_active(&usbvision->wait_frame)) {
PDEBUG(DBG_PARSE, "Wake up !");
wake_up_interruptible(&usbvision->wait_frame);
}
}
else
frame->grabstate = FrameState_Grabbing;
/* Update the frame's uncompressed length. */
frame->scanlength += copylen;
}
/*
* Make all of the blocks of data contiguous
*/
static int usbvision_compress_isochronous(struct usb_usbvision *usbvision,
struct urb *urb)
{
unsigned char *packet_data;
int i, totlen = 0;
for (i = 0; i < urb->number_of_packets; i++) {
int packet_len = urb->iso_frame_desc[i].actual_length;
int packet_stat = urb->iso_frame_desc[i].status;
packet_data = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
/* Detect and ignore errored packets */
if (packet_stat) { // packet_stat != 0 ?????????????
PDEBUG(DBG_ISOC, "data error: [%d] len=%d, status=%X", i, packet_len, packet_stat);
usbvision->isocErrCount++;
continue;
}
/* Detect and ignore empty packets */
if (packet_len < 0) {
PDEBUG(DBG_ISOC, "error packet [%d]", i);
usbvision->isocSkipCount++;
continue;
}
else if (packet_len == 0) { /* Frame end ????? */
PDEBUG(DBG_ISOC, "null packet [%d]", i);
usbvision->isocstate=IsocState_NoFrame;
usbvision->isocSkipCount++;
continue;
}
else if (packet_len > usbvision->isocPacketSize) {
PDEBUG(DBG_ISOC, "packet[%d] > isocPacketSize", i);
usbvision->isocSkipCount++;
continue;
}
PDEBUG(DBG_ISOC, "packet ok [%d] len=%d", i, packet_len);
if (usbvision->isocstate==IsocState_NoFrame) { //new frame begins
usbvision->isocstate=IsocState_InFrame;
scratch_mark_header(usbvision);
usbvision_measure_bandwidth(usbvision);
PDEBUG(DBG_ISOC, "packet with header");
}
/*
* If usbvision continues to feed us with data but there is no
* consumption (if, for example, V4L client fell asleep) we
* may overflow the buffer. We have to move old data over to
* free room for new data. This is bad for old data. If we
* just drop new data then it's bad for new data... choose
* your favorite evil here.
*/
if (scratch_free(usbvision) < packet_len) {
usbvision->scratch_ovf_count++;
PDEBUG(DBG_ISOC, "scratch buf overflow! scr_len: %d, n: %d",
scratch_len(usbvision), packet_len);
scratch_rm_old(usbvision, packet_len - scratch_free(usbvision));
}
/* Now we know that there is enough room in scratch buffer */
scratch_put(usbvision, packet_data, packet_len);
totlen += packet_len;
usbvision->isocDataCount += packet_len;
usbvision->isocPacketCount++;
}
#if ENABLE_HEXDUMP
if (totlen > 0) {
static int foo = 0;
if (foo < 1) {
printk(KERN_DEBUG "+%d.\n", usbvision->scratchlen);
usbvision_hexdump(data0, (totlen > 64) ? 64 : totlen);
++foo;
}
}
#endif
return totlen;
}
static void usbvision_isocIrq(struct urb *urb, struct pt_regs *regs)
{
int errCode = 0;
int len;
struct usb_usbvision *usbvision = urb->context;
int i;
unsigned long startTime = jiffies;
struct usbvision_frame **f;
/* We don't want to do anything if we are about to be removed! */
if (!USBVISION_IS_OPERATIONAL(usbvision))
return;
f = &usbvision->curFrame;
/* Manage streaming interruption */
if (usbvision->streaming == Stream_Interrupt) {
usbvision->streaming = Stream_Idle;
if ((*f)) {
(*f)->grabstate = FrameState_Ready;
(*f)->scanstate = ScanState_Scanning;
}
PDEBUG(DBG_IRQ, "stream interrupted");
wake_up_interruptible(&usbvision->wait_stream);
}
/* Copy the data received into our scratch buffer */
len = usbvision_compress_isochronous(usbvision, urb);
usbvision->isocUrbCount++;
usbvision->urb_length = len;
if (usbvision->streaming == Stream_On) {
/* If we collected enough data let's parse! */
if (scratch_len(usbvision) > USBVISION_HEADER_LENGTH) { /* 12 == header_length */
/*If we don't have a frame we're current working on, complain */
if((!list_empty(&(usbvision->inqueue))) || (usbvision->overlay)) {
if (!(*f)) {
(*f) = list_entry(usbvision->inqueue.next,struct usbvision_frame, frame);
}
usbvision_parse_data(usbvision);
}
else {
PDEBUG(DBG_IRQ, "received data, but no one needs it");
scratch_reset(usbvision);
}
}
}
else {
PDEBUG(DBG_IRQ, "received data, but no one needs it");
scratch_reset(usbvision);
}
usbvision->timeInIrq += jiffies - startTime;
for (i = 0; i < USBVISION_URB_FRAMES; i++) {
urb->iso_frame_desc[i].status = 0;
urb->iso_frame_desc[i].actual_length = 0;
}
urb->status = 0;
urb->dev = usbvision->dev;
errCode = usb_submit_urb (urb, GFP_ATOMIC);
/* Disable this warning. By design of the driver. */
// if(errCode) {
// err("%s: usb_submit_urb failed: error %d", __FUNCTION__, errCode);
// }
return;
}
/*************************************/
/* Low level usbvision access functions */
/*************************************/
/*
* usbvision_read_reg()
*
* return < 0 -> Error
* >= 0 -> Data
*/
static int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg)
{
int errCode = 0;
unsigned char buffer[1];
if (!USBVISION_IS_OPERATIONAL(usbvision))
return -1;
errCode = usb_control_msg(usbvision->dev, usb_rcvctrlpipe(usbvision->dev, 1),
USBVISION_OP_CODE,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT,
0, (__u16) reg, buffer, 1, HZ);
if (errCode < 0) {
err("%s: failed: error %d", __FUNCTION__, errCode);
return errCode;
}
return buffer[0];
}
/*
* usbvision_write_reg()
*
* return 1 -> Reg written
* 0 -> usbvision is not yet ready
* -1 -> Something went wrong
*/
static int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg,
unsigned char value)
{
int errCode = 0;
if (!USBVISION_IS_OPERATIONAL(usbvision))
return 0;
errCode = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
USBVISION_OP_CODE,
USB_DIR_OUT | USB_TYPE_VENDOR |
USB_RECIP_ENDPOINT, 0, (__u16) reg, &value, 1, HZ);
if (errCode < 0) {
err("%s: failed: error %d", __FUNCTION__, errCode);
}
return errCode;
}
static void usbvision_ctrlUrb_complete(struct urb *urb, struct pt_regs *regs)
{
struct usb_usbvision *usbvision = (struct usb_usbvision *)urb->context;
PDEBUG(DBG_IRQ, "");
usbvision->ctrlUrbBusy = 0;
if (waitqueue_active(&usbvision->ctrlUrb_wq)) {
wake_up_interruptible(&usbvision->ctrlUrb_wq);
}
}
static int usbvision_write_reg_irq(struct usb_usbvision *usbvision,int address,
unsigned char *data, int len)
{
int errCode = 0;
PDEBUG(DBG_IRQ, "");
if (len > 8) {
return -EFAULT;
}
// down(&usbvision->ctrlUrbLock);
if (usbvision->ctrlUrbBusy) {
// up(&usbvision->ctrlUrbLock);
return -EBUSY;
}
usbvision->ctrlUrbBusy = 1;
// up(&usbvision->ctrlUrbLock);
usbvision->ctrlUrbSetup.bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT;
usbvision->ctrlUrbSetup.bRequest = USBVISION_OP_CODE;
usbvision->ctrlUrbSetup.wValue = 0;
usbvision->ctrlUrbSetup.wIndex = cpu_to_le16(address);
usbvision->ctrlUrbSetup.wLength = cpu_to_le16(len);
usb_fill_control_urb (usbvision->ctrlUrb, usbvision->dev,
usb_sndctrlpipe(usbvision->dev, 1),
(unsigned char *)&usbvision->ctrlUrbSetup,
(void *)usbvision->ctrlUrbBuffer, len,
usbvision_ctrlUrb_complete,
(void *)usbvision);
memcpy(usbvision->ctrlUrbBuffer, data, len);
errCode = usb_submit_urb(usbvision->ctrlUrb, GFP_ATOMIC);
if (errCode < 0) {
// error in usb_submit_urb()
usbvision->ctrlUrbBusy = 0;
}
PDEBUG(DBG_IRQ, "submit %d byte: error %d", len, errCode);
return errCode;
}
static int usbvision_init_compression(struct usb_usbvision *usbvision)
{
int errCode = 0;
usbvision->lastIsocFrameNum = -1;
usbvision->isocDataCount = 0;
usbvision->isocPacketCount = 0;
usbvision->isocSkipCount = 0;
usbvision->comprLevel = 50;
usbvision->lastComprLevel = -1;
usbvision->isocUrbCount = 0;
usbvision->requestIntra = 1;
usbvision->isocMeasureBandwidthCount = 0;
return errCode;
}
/* this function measures the used bandwidth since last call
* return: 0 : no error
* sets usedBandwidth to 1-100 : 1-100% of full bandwidth resp. to isocPacketSize
*/
static int usbvision_measure_bandwidth (struct usb_usbvision *usbvision)
{
int errCode = 0;
if (usbvision->isocMeasureBandwidthCount < 2) { // this gives an average bandwidth of 3 frames
usbvision->isocMeasureBandwidthCount++;
return errCode;
}
if ((usbvision->isocPacketSize > 0) && (usbvision->isocPacketCount > 0)) {
usbvision->usedBandwidth = usbvision->isocDataCount /
(usbvision->isocPacketCount + usbvision->isocSkipCount) *
100 / usbvision->isocPacketSize;
}
usbvision->isocMeasureBandwidthCount = 0;
usbvision->isocDataCount = 0;
usbvision->isocPacketCount = 0;
usbvision->isocSkipCount = 0;
return errCode;
}
static int usbvision_adjust_compression (struct usb_usbvision *usbvision)
{
int errCode = 0;
unsigned char buffer[6];
PDEBUG(DBG_IRQ, "");
if ((adjustCompression) && (usbvision->usedBandwidth > 0)) {
usbvision->comprLevel += (usbvision->usedBandwidth - 90) / 2;
RESTRICT_TO_RANGE(usbvision->comprLevel, 0, 100);
if (usbvision->comprLevel != usbvision->lastComprLevel) {
int distorsion;
if (usbvision->bridgeType == BRIDGE_NT1004 || usbvision->bridgeType == BRIDGE_NT1005) {
buffer[0] = (unsigned char)(4 + 16 * usbvision->comprLevel / 100); // PCM Threshold 1
buffer[1] = (unsigned char)(4 + 8 * usbvision->comprLevel / 100); // PCM Threshold 2
distorsion = 7 + 248 * usbvision->comprLevel / 100;
buffer[2] = (unsigned char)(distorsion & 0xFF); // Average distorsion Threshold (inter)
buffer[3] = (unsigned char)(distorsion & 0xFF); // Average distorsion Threshold (intra)
distorsion = 1 + 42 * usbvision->comprLevel / 100;
buffer[4] = (unsigned char)(distorsion & 0xFF); // Maximum distorsion Threshold (inter)
buffer[5] = (unsigned char)(distorsion & 0xFF); // Maximum distorsion Threshold (intra)
}
else { //BRIDGE_NT1003
buffer[0] = (unsigned char)(4 + 16 * usbvision->comprLevel / 100); // PCM threshold 1
buffer[1] = (unsigned char)(4 + 8 * usbvision->comprLevel / 100); // PCM threshold 2
distorsion = 2 + 253 * usbvision->comprLevel / 100;
buffer[2] = (unsigned char)(distorsion & 0xFF); // distorsion threshold bit0-7
buffer[3] = 0; //(unsigned char)((distorsion >> 8) & 0x0F); // distorsion threshold bit 8-11
distorsion = 0 + 43 * usbvision->comprLevel / 100;
buffer[4] = (unsigned char)(distorsion & 0xFF); // maximum distorsion bit0-7
buffer[5] = 0; //(unsigned char)((distorsion >> 8) & 0x01); // maximum distorsion bit 8
}
errCode = usbvision_write_reg_irq(usbvision, USBVISION_PCM_THR1, buffer, 6);
if (errCode == 0){
PDEBUG(DBG_IRQ, "new compr params %#02x %#02x %#02x %#02x %#02x %#02x", buffer[0],
buffer[1], buffer[2], buffer[3], buffer[4], buffer[5]);
usbvision->lastComprLevel = usbvision->comprLevel;
}
}
}
return errCode;
}
static int usbvision_request_intra (struct usb_usbvision *usbvision)
{
int errCode = 0;
unsigned char buffer[1];
PDEBUG(DBG_IRQ, "");
usbvision->requestIntra = 1;
buffer[0] = 1;
usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1);
return errCode;
}
static int usbvision_unrequest_intra (struct usb_usbvision *usbvision)
{
int errCode = 0;
unsigned char buffer[1];
PDEBUG(DBG_IRQ, "");
usbvision->requestIntra = 0;
buffer[0] = 0;
usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1);
return errCode;
}
/* ----------------------------------------------------------------------- */
/* I2C functions */
/* ----------------------------------------------------------------------- */
static void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd,
void *arg)
{
int i;
for (i = 0; i < USBVISION_I2C_CLIENTS_MAX; i++) {
if (NULL == usbvision->i2c_clients[i])
continue;
if (NULL == usbvision->i2c_clients[i]->driver->command)
continue;
usbvision->i2c_clients[i]->driver->command(usbvision->i2c_clients[i], cmd, arg);
}
}
static int attach_inform(struct i2c_client *client)
{
struct usb_usbvision *usbvision;
struct tuner_setup tun_addr;
int i;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
usbvision = (struct usb_usbvision *)client->adapter->data;
#else
usbvision = (struct usb_usbvision *)i2c_get_adapdata(client->adapter);
#endif
for (i = 0; i < USBVISION_I2C_CLIENTS_MAX; i++) {
if (usbvision->i2c_clients[i] == NULL ||
usbvision->i2c_clients[i]->driver->id ==
client->driver->id) {
usbvision->i2c_clients[i] = client;
break;
}
}
if ((usbvision->have_tuner) && (usbvision->tuner_type != -1)) {
tun_addr.mode_mask = T_ANALOG_TV;
tun_addr.type = usbvision->tuner_type;
tun_addr.addr = ADDR_UNSET;
client->driver->command(client,TUNER_SET_TYPE_ADDR, &tun_addr);
call_i2c_clients(usbvision, VIDIOC_INT_RESET, NULL);
call_i2c_clients(usbvision, VIDIOC_S_INPUT, &usbvision->ctl_input);
call_i2c_clients(usbvision, VIDIOC_STREAMON, NULL);
}
call_i2c_clients(usbvision, VIDIOC_S_STD, &usbvision->tvnorm->id);
PDEBUG(DBG_I2C, "usbvision[%d] attaches %s", usbvision->nr, client->name);
return 0;
}
static int detach_inform(struct i2c_client *client)
{
struct usb_usbvision *usbvision;
int i;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
usbvision = (struct usb_usbvision *)client->adapter->data;
#else
usbvision = (struct usb_usbvision *)i2c_get_adapdata(client->adapter);
#endif
PDEBUG(DBG_I2C, "usbvision[%d] detaches %s", usbvision->nr, client->name);
for (i = 0; i < USBVISION_I2C_CLIENTS_MAX; i++) {
if (NULL != usbvision->i2c_clients[i] &&
usbvision->i2c_clients[i]->driver->id ==
client->driver->id) {
usbvision->i2c_clients[i] = NULL;
break;
}
}
return 0;
}
static int
usbvision_i2c_read_max4(struct usb_usbvision *usbvision, unsigned char addr,
char *buf, short len)
{
int rc, retries;
for (retries = 5;;) {
rc = usbvision_write_reg(usbvision, USBVISION_SER_ADRS, addr);
if (rc < 0)
return rc;
/* Initiate byte read cycle */
/* USBVISION_SER_CONT <- d0-d2 n. of bytes to r/w */
/* d3 0=Wr 1=Rd */
rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT,
(len & 0x07) | 0x18);
if (rc < 0)
return rc;
/* Test for Busy and ACK */
do {
/* USBVISION_SER_CONT -> d4 == 0 busy */
rc = usbvision_read_reg(usbvision, USBVISION_SER_CONT);
} while (rc > 0 && ((rc & 0x10) != 0)); /* Retry while busy */
if (rc < 0)
return rc;
/* USBVISION_SER_CONT -> d5 == 1 Not ack */
if ((rc & 0x20) == 0) /* Ack? */
break;
/* I2C abort */
rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT, 0x00);
if (rc < 0)
return rc;
if (--retries < 0)
return -1;
}
switch (len) {
case 4:
buf[3] = usbvision_read_reg(usbvision, USBVISION_SER_DAT4);
case 3:
buf[2] = usbvision_read_reg(usbvision, USBVISION_SER_DAT3);
case 2:
buf[1] = usbvision_read_reg(usbvision, USBVISION_SER_DAT2);
case 1:
buf[0] = usbvision_read_reg(usbvision, USBVISION_SER_DAT1);
break;
default:
printk(KERN_ERR
"usbvision_i2c_read_max4: buffer length > 4\n");
}
if (debug & DBG_I2C) {
int idx;
for (idx = 0; idx < len; idx++) {
PDEBUG(DBG_I2C, "read %x from address %x", (unsigned char)buf[idx], addr);
}
}
return len;
}
static int usbvision_i2c_write_max4(struct usb_usbvision *usbvision,
unsigned char addr, const char *buf,
short len)
{
int rc, retries;
int i;
unsigned char value[6];
unsigned char ser_cont;
ser_cont = (len & 0x07) | 0x10;
value[0] = addr;
value[1] = ser_cont;
for (i = 0; i < len; i++)
value[i + 2] = buf[i];
for (retries = 5;;) {
rc = usb_control_msg(usbvision->dev,
usb_sndctrlpipe(usbvision->dev, 1),
USBVISION_OP_CODE,
USB_DIR_OUT | USB_TYPE_VENDOR |
USB_RECIP_ENDPOINT, 0,
(__u16) USBVISION_SER_ADRS, value,
len + 2, HZ);
if (rc < 0)
return rc;
rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT,
(len & 0x07) | 0x10);
if (rc < 0)
return rc;
/* Test for Busy and ACK */
do {
rc = usbvision_read_reg(usbvision, USBVISION_SER_CONT);
} while (rc > 0 && ((rc & 0x10) != 0)); /* Retry while busy */
if (rc < 0)
return rc;
if ((rc & 0x20) == 0) /* Ack? */
break;
/* I2C abort */
usbvision_write_reg(usbvision, USBVISION_SER_CONT, 0x00);
if (--retries < 0)
return -1;
}
if (debug & DBG_I2C) {
int idx;
for (idx = 0; idx < len; idx++) {
PDEBUG(DBG_I2C, "wrote %x at address %x", (unsigned char)buf[idx], addr);
}
}
return len;
}
static int usbvision_i2c_write(void *data, unsigned char addr, char *buf,
short len)
{
char *bufPtr = buf;
int retval;
int wrcount = 0;
int count;
int maxLen = 4;
struct usb_usbvision *usbvision = (struct usb_usbvision *) data;
while (len > 0) {
count = (len > maxLen) ? maxLen : len;
retval = usbvision_i2c_write_max4(usbvision, addr, bufPtr, count);
if (retval > 0) {
len -= count;
bufPtr += count;
wrcount += count;
} else
return (retval < 0) ? retval : -EFAULT;
}
return wrcount;
}
static int usbvision_i2c_read(void *data, unsigned char addr, char *buf,
short len)
{
char temp[4];
int retval, i;
int rdcount = 0;
int count;
struct usb_usbvision *usbvision = (struct usb_usbvision *) data;
while (len > 0) {
count = (len > 3) ? 4 : len;
retval = usbvision_i2c_read_max4(usbvision, addr, temp, count);
if (retval > 0) {
for (i = 0; i < len; i++)
buf[rdcount + i] = temp[i];
len -= count;
rdcount += count;
} else
return (retval < 0) ? retval : -EFAULT;
}
return rdcount;
}
static struct i2c_algo_usb_data i2c_algo_template = {
.data = NULL,
.inb = usbvision_i2c_read,
.outb = usbvision_i2c_write,
.udelay = 10,
.mdelay = 10,
.timeout = 100,
};
static struct i2c_adapter i2c_adap_template = {
.owner = THIS_MODULE,
.name = "usbvision",
.id = I2C_HW_B_BT848, /* FIXME */
.algo = NULL,
.algo_data = NULL,
.client_register = attach_inform,
.client_unregister = detach_inform,
#if defined (I2C_ADAP_CLASS_TV_ANALOG)
.class = I2C_ADAP_CLASS_TV_ANALOG,
#elif defined (I2C_CLASS_TV_ANALOG)
.class = I2C_CLASS_TV_ANALOG,
#endif
};
static struct i2c_client i2c_client_template = {
.name = "usbvision internal",
.flags = 0,
.addr = 0,
.adapter = NULL,
.driver = NULL,
};
static int usbvision_init_i2c(struct usb_usbvision *usbvision)
{
memcpy(&usbvision->i2c_adap, &i2c_adap_template,
sizeof(struct i2c_adapter));
memcpy(&usbvision->i2c_algo, &i2c_algo_template,
sizeof(struct i2c_algo_usb_data));
memcpy(&usbvision->i2c_client, &i2c_client_template,
sizeof(struct i2c_client));
sprintf(usbvision->i2c_adap.name + strlen(usbvision->i2c_adap.name),
" #%d", usbvision->vdev->minor & 0x1f);
PDEBUG(DBG_I2C, "Adaptername: %s", usbvision->i2c_adap.name);
i2c_set_adapdata(&usbvision->i2c_adap, usbvision);
i2c_set_clientdata(&usbvision->i2c_client, usbvision);
i2c_set_algo_usb_data(&usbvision->i2c_algo, usbvision);
usbvision->i2c_adap.algo_data = &usbvision->i2c_algo;
usbvision->i2c_client.adapter = &usbvision->i2c_adap;
if (usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_IIC_LRNACK) < 0) {
printk(KERN_ERR "usbvision_init_i2c: can't wirte reg\n");
return -EBUSY;
}
#ifdef CONFIG_KMOD
/* Request the load of the i2c modules we need */
if (autoload) {
switch (usbvision_device_data[usbvision->DevModel].Codec) {
case CODEC_SAA7113:
request_module("saa7115");
break;
case CODEC_SAA7111:
request_module("saa7115");
break;
}
if (usbvision_device_data[usbvision->DevModel].Tuner == 1) {
request_module("tuner");
}
}
#endif
usbvision->i2c_ok = usbvision_i2c_usb_add_bus(&usbvision->i2c_adap);
return usbvision->i2c_ok;
}
/****************************/
/* usbvision utility functions */
/****************************/
static int usbvision_power_off(struct usb_usbvision *usbvision)
{
int errCode = 0;
PDEBUG(DBG_FUNC, "");
errCode = usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN);
if (errCode == 1) {
usbvision->power = 0;
}
PDEBUG(DBG_FUNC, "%s: errCode %d", (errCode!=1)?"ERROR":"power is off", errCode);
return errCode;
}
// to call usbvision_power_off from task queue
static void call_usbvision_power_off(void *_usbvision)
{
struct usb_usbvision *usbvision = _usbvision;
PDEBUG(DBG_FUNC, "");
down_interruptible(&usbvision->lock);
if(usbvision->user == 0) {
usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
usbvision_power_off(usbvision);
usbvision->initialized = 0;
}
up(&usbvision->lock);
}
/*
* usbvision_set_video_format()
*
*/
static int usbvision_set_video_format(struct usb_usbvision *usbvision, int format)
{
static const char proc[] = "usbvision_set_video_format";
int rc;
unsigned char value[2];
if (!USBVISION_IS_OPERATIONAL(usbvision))
return 0;
PDEBUG(DBG_FUNC, "isocMode %#02x", format);
if ((format != ISOC_MODE_YUV422)
&& (format != ISOC_MODE_YUV420)
&& (format != ISOC_MODE_COMPRESS)) {
printk(KERN_ERR "usbvision: unknown video format %02x, using default YUV420",
format);
format = ISOC_MODE_YUV420;
}
value[0] = 0x0A; //TODO: See the effect of the filter
value[1] = format;
rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
USBVISION_OP_CODE,
USB_DIR_OUT | USB_TYPE_VENDOR |
USB_RECIP_ENDPOINT, 0,
(__u16) USBVISION_FILT_CONT, value, 2, HZ);
if (rc < 0) {
printk(KERN_ERR "%s: ERROR=%d. USBVISION stopped - "
"reconnect or reload driver.\n", proc, rc);
}
usbvision->isocMode = format;
return rc;
}
/*
* usbvision_set_output()
*
*/
static int usbvision_set_output(struct usb_usbvision *usbvision, int width,
int height)
{
int errCode = 0;
int UsbWidth, UsbHeight;
unsigned int frameRate=0, frameDrop=0;
unsigned char value[4];
if (!USBVISION_IS_OPERATIONAL(usbvision)) {
return 0;
}
if (width > MAX_USB_WIDTH) {
UsbWidth = width / 2;
usbvision->stretch_width = 2;
}
else {
UsbWidth = width;
usbvision->stretch_width = 1;
}
if (height > MAX_USB_HEIGHT) {
UsbHeight = height / 2;
usbvision->stretch_height = 2;
}
else {
UsbHeight = height;
usbvision->stretch_height = 1;
}
RESTRICT_TO_RANGE(UsbWidth, MIN_FRAME_WIDTH, MAX_USB_WIDTH);
UsbWidth &= ~(MIN_FRAME_WIDTH-1);
RESTRICT_TO_RANGE(UsbHeight, MIN_FRAME_HEIGHT, MAX_USB_HEIGHT);
UsbHeight &= ~(1);
PDEBUG(DBG_FUNC, "usb %dx%d; screen %dx%d; stretch %dx%d",
UsbWidth, UsbHeight, width, height,
usbvision->stretch_width, usbvision->stretch_height);
/* I'll not rewrite the same values */
if ((UsbWidth != usbvision->curwidth) || (UsbHeight != usbvision->curheight)) {
value[0] = UsbWidth & 0xff; //LSB
value[1] = (UsbWidth >> 8) & 0x03; //MSB
value[2] = UsbHeight & 0xff; //LSB
value[3] = (UsbHeight >> 8) & 0x03; //MSB
errCode = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
USBVISION_OP_CODE,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT,
0, (__u16) USBVISION_LXSIZE_O, value, 4, HZ);
if (errCode < 0) {
err("%s failed: error %d", __FUNCTION__, errCode);
return errCode;
}
usbvision->curwidth = usbvision->stretch_width * UsbWidth;
usbvision->curheight = usbvision->stretch_height * UsbHeight;
}
if (usbvision->isocMode == ISOC_MODE_YUV422) {
frameRate = (usbvision->isocPacketSize * 1000) / (UsbWidth * UsbHeight * 2);
}
else if (usbvision->isocMode == ISOC_MODE_YUV420) {
frameRate = (usbvision->isocPacketSize * 1000) / ((UsbWidth * UsbHeight * 12) / 8);
}
else {
frameRate = FRAMERATE_MAX;
}
if (usbvision->tvnorm->id & V4L2_STD_625_50) {
frameDrop = frameRate * 32 / 25 - 1;
}
else if (usbvision->tvnorm->id & V4L2_STD_525_60) {
frameDrop = frameRate * 32 / 30 - 1;
}
RESTRICT_TO_RANGE(frameDrop, FRAMERATE_MIN, FRAMERATE_MAX);
PDEBUG(DBG_FUNC, "frameRate %d fps, frameDrop %d", frameRate, frameDrop);
frameDrop = FRAMERATE_MAX; // We can allow the maximum here, because dropping is controlled
/* frameDrop = 7; => framePhase = 1, 5, 9, 13, 17, 21, 25, 0, 4, 8, ...
=> frameSkip = 4;
=> frameRate = (7 + 1) * 25 / 32 = 200 / 32 = 6.25;
frameDrop = 9; => framePhase = 1, 5, 8, 11, 14, 17, 21, 24, 27, 1, 4, 8, ...
=> frameSkip = 4, 3, 3, 3, 3, 4, 3, 3, 3, 3, 4, ...
=> frameRate = (9 + 1) * 25 / 32 = 250 / 32 = 7.8125;
*/
errCode = usbvision_write_reg(usbvision, USBVISION_FRM_RATE, frameDrop);
return errCode;
}
/*
* usbvision_empty_framequeues()
* prepare queues for incoming and outgoing frames
*/
static void usbvision_empty_framequeues(struct usb_usbvision *usbvision)
{
u32 i;
INIT_LIST_HEAD(&(usbvision->inqueue));
INIT_LIST_HEAD(&(usbvision->outqueue));
for (i = 0; i < USBVISION_NUMFRAMES; i++) {
usbvision->frame[i].grabstate = FrameState_Unused;
usbvision->frame[i].bytes_read = 0;
}
}
/*
* usbvision_stream_interrupt()
* stops streaming
*/
static int usbvision_stream_interrupt(struct usb_usbvision *usbvision)
{
int ret = 0;
/* stop reading from the device */
usbvision->streaming = Stream_Interrupt;
ret = wait_event_timeout(usbvision->wait_stream,
(usbvision->streaming == Stream_Idle),
msecs_to_jiffies(USBVISION_NUMSBUF*USBVISION_URB_FRAMES));
return ret;
}
/*
* usbvision_set_compress_params()
*
*/
static int usbvision_set_compress_params(struct usb_usbvision *usbvision)
{
static const char proc[] = "usbvision_set_compresion_params: ";
int rc;
unsigned char value[6];
value[0] = 0x0F; // Intra-Compression cycle
value[1] = 0x01; // Reg.45 one line per strip
value[2] = 0x00; // Reg.46 Force intra mode on all new frames
value[3] = 0x00; // Reg.47 FORCE_UP <- 0 normal operation (not force)
value[4] = 0xA2; // Reg.48 BUF_THR I'm not sure if this does something in not compressed mode.
value[5] = 0x00; // Reg.49 DVI_YUV This has nothing to do with compression
//catched values for NT1004
// value[0] = 0xFF; // Never apply intra mode automatically
// value[1] = 0xF1; // Use full frame height for virtual strip width; One line per strip
// value[2] = 0x01; // Force intra mode on all new frames
// value[3] = 0x00; // Strip size 400 Bytes; do not force up
// value[4] = 0xA2; //
if (!USBVISION_IS_OPERATIONAL(usbvision))
return 0;
rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
USBVISION_OP_CODE,
USB_DIR_OUT | USB_TYPE_VENDOR |
USB_RECIP_ENDPOINT, 0,
(__u16) USBVISION_INTRA_CYC, value, 5, HZ);
if (rc < 0) {
printk(KERN_ERR "%sERROR=%d. USBVISION stopped - "
"reconnect or reload driver.\n", proc, rc);
return rc;
}
if (usbvision->bridgeType == BRIDGE_NT1004) {
value[0] = 20; // PCM Threshold 1
value[1] = 12; // PCM Threshold 2
value[2] = 255; // Distorsion Threshold inter
value[3] = 255; // Distorsion Threshold intra
value[4] = 43; // Max Distorsion inter
value[5] = 43; // Max Distorsion intra
}
else {
value[0] = 20; // PCM Threshold 1
value[1] = 12; // PCM Threshold 2
value[2] = 255; // Distorsion Threshold d7-d0
value[3] = 0; // Distorsion Threshold d11-d8
value[4] = 43; // Max Distorsion d7-d0
value[5] = 0; // Max Distorsion d8
}
if (!USBVISION_IS_OPERATIONAL(usbvision))
return 0;
rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
USBVISION_OP_CODE,
USB_DIR_OUT | USB_TYPE_VENDOR |
USB_RECIP_ENDPOINT, 0,
(__u16) USBVISION_PCM_THR1, value, 6, HZ);
if (rc < 0) {
printk(KERN_ERR "%sERROR=%d. USBVISION stopped - "
"reconnect or reload driver.\n", proc, rc);
return rc;
}
return rc;
}
/*
* usbvision_set_input()
*
* Set the input (saa711x, ...) size x y and other misc input params
* I've no idea if this parameters are right
*
*/
static int usbvision_set_input(struct usb_usbvision *usbvision)
{
static const char proc[] = "usbvision_set_input: ";
int rc;
unsigned char value[8];
unsigned char dvi_yuv_value;
if (!USBVISION_IS_OPERATIONAL(usbvision))
return 0;
/* Set input format expected from decoder*/
if (usbvision_device_data[usbvision->DevModel].Vin_Reg1 >= 0) {
value[0] = usbvision_device_data[usbvision->DevModel].Vin_Reg1 & 0xff;
} else if(usbvision_device_data[usbvision->DevModel].Codec == CODEC_SAA7113) {
/* SAA7113 uses 8 bit output */
value[0] = USBVISION_8_422_SYNC;
} else {
/* I'm sure only about d2-d0 [010] 16 bit 4:2:2 usin sync pulses
* as that is how saa7111 is configured */
value[0] = USBVISION_16_422_SYNC;
/* | USBVISION_VSNC_POL | USBVISION_VCLK_POL);*/
}
rc = usbvision_write_reg(usbvision, USBVISION_VIN_REG1, value[0]);
if (rc < 0) {
printk(KERN_ERR "%sERROR=%d. USBVISION stopped - "
"reconnect or reload driver.\n", proc, rc);
return rc;
}
if (usbvision->tvnorm->id & V4L2_STD_PAL) {
value[0] = 0xC0;
value[1] = 0x02; //0x02C0 -> 704 Input video line length
value[2] = 0x20;
value[3] = 0x01; //0x0120 -> 288 Input video n. of lines
value[4] = 0x60;
value[5] = 0x00; //0x0060 -> 96 Input video h offset
value[6] = 0x16;
value[7] = 0x00; //0x0016 -> 22 Input video v offset
} else if (usbvision->tvnorm->id & V4L2_STD_SECAM) {
value[0] = 0xC0;
value[1] = 0x02; //0x02C0 -> 704 Input video line length
value[2] = 0x20;
value[3] = 0x01; //0x0120 -> 288 Input video n. of lines
value[4] = 0x01;
value[5] = 0x00; //0x0001 -> 01 Input video h offset
value[6] = 0x01;
value[7] = 0x00; //0x0001 -> 01 Input video v offset
} else { /* V4L2_STD_NTSC */
value[0] = 0xD0;
value[1] = 0x02; //0x02D0 -> 720 Input video line length
value[2] = 0xF0;
value[3] = 0x00; //0x00F0 -> 240 Input video number of lines
value[4] = 0x50;
value[5] = 0x00; //0x0050 -> 80 Input video h offset
value[6] = 0x10;
value[7] = 0x00; //0x0010 -> 16 Input video v offset
}
if (usbvision_device_data[usbvision->DevModel].X_Offset >= 0) {
value[4]=usbvision_device_data[usbvision->DevModel].X_Offset & 0xff;
value[5]=(usbvision_device_data[usbvision->DevModel].X_Offset & 0x0300) >> 8;
}
if (usbvision_device_data[usbvision->DevModel].Y_Offset >= 0) {
value[6]=usbvision_device_data[usbvision->DevModel].Y_Offset & 0xff;
value[7]=(usbvision_device_data[usbvision->DevModel].Y_Offset & 0x0300) >> 8;
}
rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
USBVISION_OP_CODE, /* USBVISION specific code */
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT, 0,
(__u16) USBVISION_LXSIZE_I, value, 8, HZ);
if (rc < 0) {
printk(KERN_ERR "%sERROR=%d. USBVISION stopped - "
"reconnect or reload driver.\n", proc, rc);
return rc;
}
dvi_yuv_value = 0x00; /* U comes after V, Ya comes after U/V, Yb comes after Yb */
if(usbvision_device_data[usbvision->DevModel].Dvi_yuv >= 0){
dvi_yuv_value = usbvision_device_data[usbvision->DevModel].Dvi_yuv & 0xff;
}
else if(usbvision_device_data[usbvision->DevModel].Codec == CODEC_SAA7113) {
/* This changes as the fine sync control changes. Further investigation necessary */
dvi_yuv_value = 0x06;
}
return (usbvision_write_reg(usbvision, USBVISION_DVI_YUV, dvi_yuv_value));
}
/*
* usbvision_set_dram_settings()
*
* Set the buffer address needed by the usbvision dram to operate
* This values has been taken with usbsnoop.
*
*/
static int usbvision_set_dram_settings(struct usb_usbvision *usbvision)
{
int rc;
unsigned char value[8];
if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
value[0] = 0x42;
value[1] = 0x71;
value[2] = 0xff;
value[3] = 0x00;
value[4] = 0x98;
value[5] = 0xe0;
value[6] = 0x71;
value[7] = 0xff;
// UR: 0x0E200-0x3FFFF = 204288 Words (1 Word = 2 Byte)
// FDL: 0x00000-0x0E099 = 57498 Words
// VDW: 0x0E3FF-0x3FFFF
}
else {
value[0] = 0x42;
value[1] = 0x00;
value[2] = 0xff;
value[3] = 0x00;
value[4] = 0x00;
value[5] = 0x00;
value[6] = 0x00;
value[7] = 0xff;
}
/* These are the values of the address of the video buffer,
* they have to be loaded into the USBVISION_DRM_PRM1-8
*
* Start address of video output buffer for read: drm_prm1-2 -> 0x00000
* End address of video output buffer for read: drm_prm1-3 -> 0x1ffff
* Start address of video frame delay buffer: drm_prm1-4 -> 0x20000
* Only used in compressed mode
* End address of video frame delay buffer: drm_prm1-5-6 -> 0x3ffff
* Only used in compressed mode
* Start address of video output buffer for write: drm_prm1-7 -> 0x00000
* End address of video output buffer for write: drm_prm1-8 -> 0x1ffff
*/
if (!USBVISION_IS_OPERATIONAL(usbvision))
return 0;
rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
USBVISION_OP_CODE, /* USBVISION specific code */
USB_DIR_OUT | USB_TYPE_VENDOR |
USB_RECIP_ENDPOINT, 0,
(__u16) USBVISION_DRM_PRM1, value, 8, HZ);
if (rc < 0) {
err("%sERROR=%d", __FUNCTION__, rc);
return rc;
}
/* Restart the video buffer logic */
if ((rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, USBVISION_RES_UR |
USBVISION_RES_FDL | USBVISION_RES_VDW)) < 0)
return rc;
rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, 0x00);
return rc;
}
/*
* ()
*
* Power on the device, enables suspend-resume logic
* & reset the isoc End-Point
*
*/
static int usbvision_power_on(struct usb_usbvision *usbvision)
{
int errCode = 0;
PDEBUG(DBG_FUNC, "");
usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN);
usbvision_write_reg(usbvision, USBVISION_PWR_REG,
USBVISION_SSPND_EN | USBVISION_RES2);
usbvision_write_reg(usbvision, USBVISION_PWR_REG,
USBVISION_SSPND_EN | USBVISION_PWR_VID);
errCode = usbvision_write_reg(usbvision, USBVISION_PWR_REG,
USBVISION_SSPND_EN | USBVISION_PWR_VID | USBVISION_RES2);
if (errCode == 1) {
usbvision->power = 1;
}
PDEBUG(DBG_FUNC, "%s: errCode %d", (errCode<0)?"ERROR":"power is on", errCode);
return errCode;
}
static void usbvision_powerOffTimer(unsigned long data)
{
struct usb_usbvision *usbvision = (void *) data;
PDEBUG(DBG_FUNC, "");
del_timer(&usbvision->powerOffTimer);
INIT_WORK(&usbvision->powerOffWork, call_usbvision_power_off, usbvision);
(void) schedule_work(&usbvision->powerOffWork);
}
/*
* usbvision_begin_streaming()
* Sure you have to put bit 7 to 0, if not incoming frames are droped, but no
* idea about the rest
*/
static int usbvision_begin_streaming(struct usb_usbvision *usbvision)
{
int errCode = 0;
if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
usbvision_init_compression(usbvision);
}
errCode = usbvision_write_reg(usbvision, USBVISION_VIN_REG2, USBVISION_NOHVALID |
usbvision->Vin_Reg2_Preset);
return errCode;
}
/*
* usbvision_restart_isoc()
* Not sure yet if touching here PWR_REG make loose the config
*/
static int usbvision_restart_isoc(struct usb_usbvision *usbvision)
{
int ret;
if (
(ret =
usbvision_write_reg(usbvision, USBVISION_PWR_REG,
USBVISION_SSPND_EN | USBVISION_PWR_VID)) < 0)
return ret;
if (
(ret =
usbvision_write_reg(usbvision, USBVISION_PWR_REG,
USBVISION_SSPND_EN | USBVISION_PWR_VID |
USBVISION_RES2)) < 0)
return ret;
if (
(ret =
usbvision_write_reg(usbvision, USBVISION_VIN_REG2,
USBVISION_KEEP_BLANK | USBVISION_NOHVALID |
usbvision->Vin_Reg2_Preset)) < 0) return ret;
/* TODO: schedule timeout */
while ((usbvision_read_reg(usbvision, USBVISION_STATUS_REG) && 0x01) != 1);
return 0;
}
static int usbvision_audio_on(struct usb_usbvision *usbvision)
{
if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, usbvision->AudioChannel) < 0) {
printk(KERN_ERR "usbvision_audio_on: can't wirte reg\n");
return -1;
}
DEBUG(printk(KERN_DEBUG "usbvision_audio_on: channel %d\n", usbvision->AudioChannel));
usbvision->AudioMute = 0;
return 0;
}
static int usbvision_audio_mute(struct usb_usbvision *usbvision)
{
if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, 0x03) < 0) {
printk(KERN_ERR "usbvision_audio_mute: can't wirte reg\n");
return -1;
}
DEBUG(printk(KERN_DEBUG "usbvision_audio_mute: audio mute\n"));
usbvision->AudioMute = 1;
return 0;
}
static int usbvision_audio_off(struct usb_usbvision *usbvision)
{
if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, USBVISION_AUDIO_MUTE) < 0) {
printk(KERN_ERR "usbvision_audio_off: can't wirte reg\n");
return -1;
}
DEBUG(printk(KERN_DEBUG "usbvision_audio_off: audio off\n"));
usbvision->AudioMute = 0;
usbvision->AudioChannel = USBVISION_AUDIO_MUTE;
return 0;
}
static int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel)
{
if (!usbvision->AudioMute) {
if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, AudioChannel) < 0) {
printk(KERN_ERR "usbvision_set_audio: can't write iopin register for audio switching\n");
return -1;
}
}
DEBUG(printk(KERN_DEBUG "usbvision_set_audio: channel %d\n", AudioChannel));
usbvision->AudioChannel = AudioChannel;
return 0;
}
static int usbvision_setup(struct usb_usbvision *usbvision)
{
usbvision_set_video_format(usbvision, isocMode);
usbvision_set_dram_settings(usbvision);
usbvision_set_compress_params(usbvision);
usbvision_set_input(usbvision);
usbvision_set_output(usbvision, MAX_USB_WIDTH, MAX_USB_HEIGHT);
usbvision_restart_isoc(usbvision);
/* cosas del PCM */
return USBVISION_IS_OPERATIONAL(usbvision);
}
/*
* usbvision_init_isoc()
*
*/
static int usbvision_init_isoc(struct usb_usbvision *usbvision)
{
struct usb_device *dev = usbvision->dev;
int bufIdx, errCode, regValue;
if (!USBVISION_IS_OPERATIONAL(usbvision))
return -EFAULT;
usbvision->curFrame = NULL;
scratch_reset(usbvision);
/* Alternate interface 1 is is the biggest frame size */
errCode = usb_set_interface(dev, usbvision->iface, usbvision->ifaceAltActive);
if (errCode < 0) {
usbvision->last_error = errCode;
return -EBUSY;
}
regValue = (16 - usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F;
usbvision->isocPacketSize = (regValue == 0) ? 0 : (regValue * 64) - 1;
PDEBUG(DBG_ISOC, "ISO Packet Length:%d", usbvision->isocPacketSize);
usbvision->usb_bandwidth = regValue >> 1;
PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", usbvision->usb_bandwidth);
/* We double buffer the Iso lists */
for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) {
int j, k;
struct urb *urb;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
urb = usb_alloc_urb(USBVISION_URB_FRAMES);
#else
urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
#endif
if (urb == NULL) {
err("%s: usb_alloc_urb() failed", __FUNCTION__);
return -ENOMEM;
}
usbvision->sbuf[bufIdx].urb = urb;
urb->dev = dev;
urb->context = usbvision;
urb->pipe = usb_rcvisocpipe(dev, usbvision->video_endp);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
urb->transfer_flags = USB_ISO_ASAP;
#else
urb->transfer_flags = URB_ISO_ASAP;
urb->interval = 1;
#endif
urb->transfer_buffer = usbvision->sbuf[bufIdx].data;
urb->complete = usbvision_isocIrq;
urb->number_of_packets = USBVISION_URB_FRAMES;
urb->transfer_buffer_length =
usbvision->isocPacketSize * USBVISION_URB_FRAMES;
for (j = k = 0; j < USBVISION_URB_FRAMES; j++,
k += usbvision->isocPacketSize) {
urb->iso_frame_desc[j].offset = k;
urb->iso_frame_desc[j].length = usbvision->isocPacketSize;
}
}
/* Submit all URBs */
for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) {
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
errCode = usb_submit_urb(usbvision->sbuf[bufIdx].urb);
#else
errCode = usb_submit_urb(usbvision->sbuf[bufIdx].urb, GFP_KERNEL);
#endif
if (errCode) {
err("%s: usb_submit_urb(%d) failed: error %d", __FUNCTION__, bufIdx, errCode);
}
}
usbvision->streaming = Stream_Idle;
PDEBUG(DBG_ISOC, "%s: streaming=1 usbvision->video_endp=$%02x", __FUNCTION__, usbvision->video_endp);
return 0;
}
/*
* usbvision_stop_isoc()
*
* This procedure stops streaming and deallocates URBs. Then it
* activates zero-bandwidth alt. setting of the video interface.
*
*/
static void usbvision_stop_isoc(struct usb_usbvision *usbvision)
{
int bufIdx, errCode, regValue;
if ((usbvision->streaming == Stream_Off) || (usbvision->dev == NULL))
return;
/* Unschedule all of the iso td's */
for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) {
usb_kill_urb(usbvision->sbuf[bufIdx].urb);
usb_free_urb(usbvision->sbuf[bufIdx].urb);
usbvision->sbuf[bufIdx].urb = NULL;
}
PDEBUG(DBG_ISOC, "%s: streaming=Stream_Off\n", __FUNCTION__);
usbvision->streaming = Stream_Off;
if (!usbvision->remove_pending) {
/* Set packet size to 0 */
errCode = usb_set_interface(usbvision->dev, usbvision->iface,
usbvision->ifaceAltInactive);
if (errCode < 0) {
err("%s: usb_set_interface() failed: error %d", __FUNCTION__, errCode);
usbvision->last_error = errCode;
}
regValue = (16 - usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F;
usbvision->isocPacketSize = (regValue == 0) ? 0 : (regValue * 64) - 1;
PDEBUG(DBG_ISOC, "ISO Packet Length:%d", usbvision->isocPacketSize);
usbvision->usb_bandwidth = regValue >> 1;
PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", usbvision->usb_bandwidth);
}
}
static int usbvision_muxsel(struct usb_usbvision *usbvision, int channel)
{
int mode[4];
int audio[]= {1, 0, 0, 0};
struct v4l2_routing route;
//channel 0 is TV with audiochannel 1 (tuner mono)
//channel 1 is Composite with audio channel 0 (line in)
//channel 2 is S-Video with audio channel 0 (line in)
//channel 3 is additional video inputs to the device with audio channel 0 (line in)
RESTRICT_TO_RANGE(channel, 0, usbvision->video_inputs);
usbvision->ctl_input = channel;
route.input = SAA7115_COMPOSITE1;
call_i2c_clients(usbvision, VIDIOC_INT_S_VIDEO_ROUTING,&route);
call_i2c_clients(usbvision, VIDIOC_S_INPUT, &usbvision->ctl_input);
// set the new channel
// Regular USB TV Tuners -> channel: 0 = Television, 1 = Composite, 2 = S-Video
// Four video input devices -> channel: 0 = Chan White, 1 = Chan Green, 2 = Chan Yellow, 3 = Chan Red
switch (usbvision_device_data[usbvision->DevModel].Codec) {
case CODEC_SAA7113:
if (SwitchSVideoInput) { // To handle problems with S-Video Input for some devices. Use SwitchSVideoInput parameter when loading the module.
mode[2] = 1;
}
else {
mode[2] = 7;
}
if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
mode[0] = 0; mode[1] = 2; mode[3] = 3; // Special for four input devices
}
else {
mode[0] = 0; mode[1] = 2; //modes for regular saa7113 devices
}
break;
case CODEC_SAA7111:
mode[0] = 0; mode[1] = 1; mode[2] = 7; //modes for saa7111
break;
default:
mode[0] = 0; mode[1] = 1; mode[2] = 7; //default modes
}
route.input = mode[channel];
call_i2c_clients(usbvision, VIDIOC_INT_S_VIDEO_ROUTING,&route);
usbvision->channel = channel;
usbvision_set_audio(usbvision, audio[channel]);
return 0;
}
/*
* usbvision_open()
*
* This is part of Video 4 Linux API. The driver can be opened by one
* client only (checks internal counter 'usbvision->user'). The procedure
* then allocates buffers needed for video processing.
*
*/
static int usbvision_v4l2_open(struct inode *inode, struct file *file)
{
struct video_device *dev = video_devdata(file);
struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
const int sb_size = USBVISION_URB_FRAMES * USBVISION_MAX_ISOC_PACKET_SIZE;
int i, errCode = 0;
PDEBUG(DBG_IO, "open");
if (timer_pending(&usbvision->powerOffTimer)) {
del_timer(&usbvision->powerOffTimer);
}
if (usbvision->user)
errCode = -EBUSY;
else {
/* Clean pointers so we know if we allocated something */
for (i = 0; i < USBVISION_NUMSBUF; i++)
usbvision->sbuf[i].data = NULL;
/* Allocate memory for the frame buffers */
usbvision->max_frame_size = MAX_FRAME_SIZE;
usbvision->fbuf_size = USBVISION_NUMFRAMES * usbvision->max_frame_size;
usbvision->fbuf = usbvision_rvmalloc(usbvision->fbuf_size);
usbvision->scratch = vmalloc(scratch_buf_size);
scratch_reset(usbvision);
if ((usbvision->fbuf == NULL) || (usbvision->scratch == NULL)) {
err("%s: unable to allocate %d bytes for fbuf and %d bytes for scratch",
__FUNCTION__, usbvision->fbuf_size, scratch_buf_size);
errCode = -ENOMEM;
}
else {
spin_lock_init(&usbvision->queue_lock);
init_waitqueue_head(&usbvision->wait_frame);
init_waitqueue_head(&usbvision->wait_stream);
/* Allocate all buffers */
for (i = 0; i < USBVISION_NUMFRAMES; i++) {
usbvision->frame[i].index = i;
usbvision->frame[i].grabstate = FrameState_Unused;
usbvision->frame[i].data = usbvision->fbuf +
i * MAX_FRAME_SIZE;
/*
* Set default sizes in case IOCTL
* (VIDIOCMCAPTURE)
* is not used (using read() instead).
*/
usbvision->stretch_width = 1;
usbvision->stretch_height = 1;
usbvision->frame[i].width = usbvision->curwidth;
usbvision->frame[i].height = usbvision->curheight;
usbvision->frame[i].bytes_read = 0;
}
if (dga) { //set default for DGA
usbvision->overlay_frame.grabstate = FrameState_Unused;
usbvision->overlay_frame.scanstate = ScanState_Scanning;
usbvision->overlay_frame.data = NULL;
usbvision->overlay_frame.width = usbvision->curwidth;
usbvision->overlay_frame.height = usbvision->curheight;
usbvision->overlay_frame.bytes_read = 0;
}
for (i = 0; i < USBVISION_NUMSBUF; i++) {
usbvision->sbuf[i].data = kzalloc(sb_size, GFP_KERNEL);
if (usbvision->sbuf[i].data == NULL) {
err("%s: unable to allocate %d bytes for sbuf", __FUNCTION__, sb_size);
errCode = -ENOMEM;
break;
}
}
}
if ((!errCode) && (usbvision->isocMode==ISOC_MODE_COMPRESS)) {
int IFB_size = MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT * 3 / 2;
usbvision->IntraFrameBuffer = vmalloc(IFB_size);
if (usbvision->IntraFrameBuffer == NULL) {
err("%s: unable to allocate %d for compr. frame buffer", __FUNCTION__, IFB_size);
errCode = -ENOMEM;
}
}
if (errCode) {
/* Have to free all that memory */
if (usbvision->fbuf != NULL) {
usbvision_rvfree(usbvision->fbuf, usbvision->fbuf_size);
usbvision->fbuf = NULL;
}
if (usbvision->scratch != NULL) {
vfree(usbvision->scratch);
usbvision->scratch = NULL;
}
for (i = 0; i < USBVISION_NUMSBUF; i++) {
if (usbvision->sbuf[i].data != NULL) {
kfree(usbvision->sbuf[i].data);
usbvision->sbuf[i].data = NULL;
}
}
if (usbvision->IntraFrameBuffer != NULL) {
vfree(usbvision->IntraFrameBuffer);
usbvision->IntraFrameBuffer = NULL;
}
}
}
/* If so far no errors then we shall start the camera */
if (!errCode) {
down(&usbvision->lock);
if (usbvision->power == 0) {
usbvision_power_on(usbvision);
usbvision_init_i2c(usbvision);
}
/* Send init sequence only once, it's large! */
if (!usbvision->initialized) {
int setup_ok = 0;
setup_ok = usbvision_setup(usbvision);
if (setup_ok)
usbvision->initialized = 1;
else
errCode = -EBUSY;
}
if (!errCode) {
usbvision_begin_streaming(usbvision);
errCode = usbvision_init_isoc(usbvision);
usbvision->user++;
}
else {
if (PowerOnAtOpen) {
usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
usbvision_power_off(usbvision);
usbvision->initialized = 0;
}
}
up(&usbvision->lock);
}
if (errCode) {
}
/* prepare queues */
usbvision_empty_framequeues(usbvision);
PDEBUG(DBG_IO, "success");
return errCode;
}
/*
* usbvision_v4l2_close()
*
* This is part of Video 4 Linux API. The procedure
* stops streaming and deallocates all buffers that were earlier
* allocated in usbvision_v4l2_open().
*
*/
static int usbvision_v4l2_close(struct inode *inode, struct file *file)
{
struct video_device *dev = video_devdata(file);
struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
int i;
PDEBUG(DBG_IO, "close");
down(&usbvision->lock);
usbvision_audio_off(usbvision);
usbvision_restart_isoc(usbvision);
usbvision_stop_isoc(usbvision);
if (usbvision->IntraFrameBuffer != NULL) {
vfree(usbvision->IntraFrameBuffer);
usbvision->IntraFrameBuffer = NULL;
}
usbvision_rvfree(usbvision->fbuf, usbvision->fbuf_size);
vfree(usbvision->scratch);
for (i = 0; i < USBVISION_NUMSBUF; i++)
kfree(usbvision->sbuf[i].data);
usbvision->user--;
if (PowerOnAtOpen) {
mod_timer(&usbvision->powerOffTimer, jiffies + USBVISION_POWEROFF_TIME);
usbvision->initialized = 0;
}
up(&usbvision->lock);
if (usbvision->remove_pending) {
info("%s: Final disconnect", __FUNCTION__);
usbvision_release(usbvision);
}
PDEBUG(DBG_IO, "success");
return 0;
}
/*
* usbvision_ioctl()
*
* This is part of Video 4 Linux API. The procedure handles ioctl() calls.
*
*/
static int usbvision_v4l2_do_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, void *arg)
{
struct video_device *dev = video_devdata(file);
struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
if (!USBVISION_IS_OPERATIONAL(usbvision))
return -EFAULT;
// if (debug & DBG_IOCTL) v4l_printk_ioctl(cmd);
switch (cmd) {
#ifdef CONFIG_VIDEO_ADV_DEBUG
/* ioctls to allow direct acces to the NT100x registers */
case VIDIOC_INT_G_REGISTER:
{
struct v4l2_register *reg = arg;
int errCode;
if (reg->i2c_id != 0)
return -EINVAL;
/* NT100x has a 8-bit register space */
errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
if (errCode < 0) {
err("%s: VIDIOC_INT_G_REGISTER failed: error %d", __FUNCTION__, errCode);
}
else {
reg->val=(unsigned char)errCode;
PDEBUG(DBG_IOCTL, "VIDIOC_INT_G_REGISTER reg=0x%02X, value=0x%02X",
(unsigned int)reg->reg, reg->val);
errCode = 0; // No error
}
return errCode;
}
case VIDIOC_INT_S_REGISTER:
{
struct v4l2_register *reg = arg;
int errCode;
if (reg->i2c_id != 0)
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
if (errCode < 0) {
err("%s: VIDIOC_INT_S_REGISTER failed: error %d", __FUNCTION__, errCode);
}
else {
PDEBUG(DBG_IOCTL, "VIDIOC_INT_S_REGISTER reg=0x%02X, value=0x%02X",
(unsigned int)reg->reg, reg->val);
errCode = 0;
}
return 0;
}
#endif
case VIDIOC_QUERYCAP:
{
struct v4l2_capability *vc=arg;
memset(vc, 0, sizeof(*vc));
strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
sizeof(vc->card));
strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
sizeof(vc->bus_info));
vc->version = USBVISION_DRIVER_VERSION;
vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_AUDIO |
V4L2_CAP_READWRITE |
V4L2_CAP_STREAMING |
(dga ? (V4L2_FBUF_CAP_LIST_CLIPPING | V4L2_CAP_VIDEO_OVERLAY) : 0) |
(usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
PDEBUG(DBG_IOCTL, "VIDIOC_QUERYCAP");
return 0;
}
case VIDIOC_ENUMINPUT:
{
struct v4l2_input *vi = arg;
int chan;
if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
return -EINVAL;
if (usbvision->have_tuner) {
chan = vi->index;
}
else {
chan = vi->index + 1; //skip Television string
}
switch(chan) {
case 0:
if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
strcpy(vi->name, "White Video Input");
}
else {
strcpy(vi->name, "Television");
vi->type = V4L2_INPUT_TYPE_TUNER;
vi->audioset = 1;
vi->tuner = chan;
vi->std = V4L2_STD_PAL | V4L2_STD_NTSC | V4L2_STD_SECAM;
}
break;
case 1:
vi->type = V4L2_INPUT_TYPE_CAMERA;
if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
strcpy(vi->name, "Green Video Input");
}
else {
strcpy(vi->name, "Composite Video Input");
}
vi->std = V4L2_STD_PAL;
break;
case 2:
vi->type = V4L2_INPUT_TYPE_CAMERA;
if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
strcpy(vi->name, "Yellow Video Input");
}
else {
strcpy(vi->name, "S-Video Input");
}
vi->std = V4L2_STD_PAL;
break;
case 3:
vi->type = V4L2_INPUT_TYPE_CAMERA;
strcpy(vi->name, "Red Video Input");
vi->std = V4L2_STD_PAL;
break;
}
PDEBUG(DBG_IOCTL, "VIDIOC_ENUMINPUT name=%s:%d tuners=%d type=%d norm=%x", vi->name, vi->index, vi->tuner,vi->type,(int)vi->std);
return 0;
}
case VIDIOC_ENUMSTD:
{
struct v4l2_standard *e = arg;
unsigned int i;
int ret;
i = e->index;
if (i >= TVNORMS)
return -EINVAL;
ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
tvnorms[e->index].name);
e->index = i;
if (ret < 0)
return ret;
return 0;
}
case VIDIOC_G_INPUT:
{
int *input = arg;
*input = usbvision->ctl_input;
return 0;
}
case VIDIOC_S_INPUT:
{
int *input = arg;
if ((*input >= usbvision->video_inputs) || (*input < 0) )
return -EINVAL;
usbvision->ctl_input = *input;
down(&usbvision->lock);
usbvision_muxsel(usbvision, usbvision->ctl_input);
usbvision_set_input(usbvision);
usbvision_set_output(usbvision, usbvision->curwidth, usbvision->curheight);
up(&usbvision->lock);
return 0;
}
case VIDIOC_G_STD:
{
v4l2_std_id *id = arg;
*id = usbvision->tvnorm->id;
PDEBUG(DBG_IOCTL, "VIDIOC_G_STD std_id=%s", usbvision->tvnorm->name);
return 0;
}
case VIDIOC_S_STD:
{
v4l2_std_id *id = arg;
unsigned int i;
for (i = 0; i < TVNORMS; i++)
if (*id == tvnorms[i].id)
break;
if (i == TVNORMS)
for (i = 0; i < TVNORMS; i++)
if (*id & tvnorms[i].id)
break;
if (i == TVNORMS)
return -EINVAL;
down(&usbvision->lock);
usbvision->tvnorm = &tvnorms[i];
call_i2c_clients(usbvision, VIDIOC_S_STD,
&usbvision->tvnorm->id);
up(&usbvision->lock);
PDEBUG(DBG_IOCTL, "VIDIOC_S_STD std_id=%s", usbvision->tvnorm->name);
return 0;
}
case VIDIOC_G_TUNER:
{
struct v4l2_tuner *vt = arg;
if (!usbvision->have_tuner || vt->index) // Only tuner 0
return -EINVAL;
strcpy(vt->name, "Television");
/* Let clients fill in the remainder of this struct */
call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
PDEBUG(DBG_IOCTL, "VIDIOC_G_TUNER signal=%x, afc=%x",vt->signal,vt->afc);
return 0;
}
case VIDIOC_S_TUNER:
{
struct v4l2_tuner *vt = arg;
// Only no or one tuner for now
if (!usbvision->have_tuner || vt->index)
return -EINVAL;
/* let clients handle this */
call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
PDEBUG(DBG_IOCTL, "VIDIOC_S_TUNER");
return 0;
}
case VIDIOC_G_FREQUENCY:
{
struct v4l2_frequency *freq = arg;
freq->tuner = 0; // Only one tuner
freq->type = V4L2_TUNER_ANALOG_TV;
freq->frequency = usbvision->freq;
PDEBUG(DBG_IOCTL, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
return 0;
}
case VIDIOC_S_FREQUENCY:
{
struct v4l2_frequency *freq = arg;
// Only no or one tuner for now
if (!usbvision->have_tuner || freq->tuner)
return -EINVAL;
usbvision->freq = freq->frequency;
call_i2c_clients(usbvision, cmd, freq);
PDEBUG(DBG_IOCTL, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
return 0;
}
case VIDIOC_G_AUDIO:
{
struct v4l2_audio *v = arg;
memset(v,0, sizeof(v));
strcpy(v->name, "TV");
PDEBUG(DBG_IOCTL, "VIDIOC_G_AUDIO");
// FIXME: no more processings ???
return 0;
}
case VIDIOC_S_AUDIO:
{
struct v4l2_audio *v = arg;
if(v->index) {
return -EINVAL;
}
PDEBUG(DBG_IOCTL, "VIDIOC_S_AUDIO");
// FIXME: void function ???
return 0;
}
case VIDIOC_QUERYCTRL:
{
struct v4l2_queryctrl *ctrl = arg;
int id=ctrl->id;
memset(ctrl,0,sizeof(*ctrl));
ctrl->id=id;
i2c_clients_command(&usbvision->i2c_adap, cmd, arg);
if (ctrl->type)
return 0;
else
return -EINVAL;
PDEBUG(DBG_IOCTL,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
}
case VIDIOC_G_CTRL:
{
struct v4l2_control *ctrl = arg;
PDEBUG(DBG_IOCTL,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
return 0;
}
case VIDIOC_S_CTRL:
{
struct v4l2_control *ctrl = arg;
PDEBUG(DBG_IOCTL, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
return 0;
}
case VIDIOC_REQBUFS:
{
struct v4l2_requestbuffers *vr = arg;
int ret;
RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
// Check input validity : the user must do a VIDEO CAPTURE and MMAP method.
if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
(vr->memory != V4L2_MEMORY_MMAP))
return -EINVAL;
// FIXME : before this, we must control if buffers are still mapped.
// Then interrupt streaming if so...
if(usbvision->streaming == Stream_On) {
if ((ret = usbvision_stream_interrupt(usbvision)))
return ret;
}
usbvision_empty_framequeues(usbvision);
usbvision->curFrame = NULL;
PDEBUG(DBG_IOCTL, "VIDIOC_REQBUFS count=%d",vr->count);
return 0;
}
case VIDIOC_QUERYBUF:
{
struct v4l2_buffer *vb = arg;
struct usbvision_frame *frame;
// FIXME : must control that buffers are mapped (VIDIOC_REQBUFS has been called)
if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
return -EINVAL;
}
if(vb->index>=USBVISION_NUMFRAMES) {
return -EINVAL;
}
// Updating the corresponding frame state
vb->flags = 0;
frame = &usbvision->frame[vb->index];
if(frame->grabstate >= FrameState_Ready)
vb->flags |= V4L2_BUF_FLAG_QUEUED;
if(frame->grabstate >= FrameState_Done)
vb->flags |= V4L2_BUF_FLAG_DONE;
if(frame->grabstate == FrameState_Unused)
vb->flags |= V4L2_BUF_FLAG_MAPPED;
vb->memory = V4L2_MEMORY_MMAP;
vb->m.offset = vb->index*MAX_FRAME_SIZE;
vb->memory = V4L2_MEMORY_MMAP;
vb->field = V4L2_FIELD_NONE;
vb->length = MAX_FRAME_SIZE;
vb->timestamp = usbvision->frame[vb->index].timestamp;
vb->sequence = usbvision->frame[vb->index].sequence;
return 0;
}
case VIDIOC_QBUF:
{
struct v4l2_buffer *vb = arg;
struct usbvision_frame *frame;
unsigned long lock_flags;
// FIXME : works only on VIDEO_CAPTURE MODE, MMAP.
if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
return -EINVAL;
}
if(vb->index>=USBVISION_NUMFRAMES) {
return -EINVAL;
}
frame = &usbvision->frame[vb->index];
if (frame->grabstate != FrameState_Unused) {
return -EAGAIN;
}
/* Mark it as ready and enqueue frame */
frame->grabstate = FrameState_Ready;
frame->scanstate = ScanState_Scanning;
frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
vb->flags &= ~V4L2_BUF_FLAG_DONE;
/* set v4l2_format index */
frame->v4l2_format = usbvision->palette;
spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
PDEBUG(DBG_IOCTL, "VIDIOC_QBUF frame #%d",vb->index);
return 0;
}
case VIDIOC_DQBUF:
{
struct v4l2_buffer *vb = arg;
int ret;
struct usbvision_frame *f;
unsigned long lock_flags;
if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (list_empty(&(usbvision->outqueue))) {
if (usbvision->streaming == Stream_Idle)
return -EINVAL;
ret = wait_event_interruptible
(usbvision->wait_frame,
!list_empty(&(usbvision->outqueue)));
if (ret)
return ret;
}
spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
f = list_entry(usbvision->outqueue.next,
struct usbvision_frame, frame);
list_del(usbvision->outqueue.next);
spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
f->grabstate = FrameState_Unused;
vb->memory = V4L2_MEMORY_MMAP;
vb->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE;
vb->index = f->index;
vb->sequence = f->sequence;
vb->timestamp = f->timestamp;
vb->field = V4L2_FIELD_NONE;
vb->bytesused = f->scanlength;
if(debug & DBG_IOCTL) { // do not spend computing time for debug stuff if not needed !
if(usbvision_counter == 100) {
PDEBUG(DBG_IOCTL, "VIDIOC_DQBUF delta=%d",(unsigned)(jiffies-usbvision_timestamp));
usbvision_counter = 0;
usbvision_timestamp = jiffies;
}
else {
usbvision_counter++;
}
PDEBUG(DBG_IOCTL, "VIDIOC_DQBUF frame #%d",vb->index);
}
return 0;
}
case VIDIOC_STREAMON:
{
int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
usbvision->streaming = Stream_On;
if(debug & DBG_IOCTL) usbvision_timestamp = jiffies;
call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
PDEBUG(DBG_IOCTL, "VIDIOC_STREAMON");
return 0;
}
case VIDIOC_STREAMOFF:
{
int *type = arg;
int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if(usbvision->streaming == Stream_On) {
usbvision_stream_interrupt(usbvision);
// Stop all video streamings
call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
}
usbvision_empty_framequeues(usbvision);
PDEBUG(DBG_IOCTL, "VIDIOC_STREAMOFF");
return 0;
}
case VIDIOC_G_FBUF:
{
struct v4l2_framebuffer *vb = arg;
if (dga) {
*vb = usbvision->vid_buf;
}
else {
memset(vb, 0, sizeof(vb)); //dga not supported, not used
}
PDEBUG(DBG_IOCTL, "VIDIOC_G_FBUF base=%p, width=%d, height=%d, pixelformat=%d, bpl=%d",
vb->base, vb->fmt.width, vb->fmt.height, vb->fmt.pixelformat,vb->fmt.bytesperline);
return 0;
}
case VIDIOC_S_FBUF:
{
struct v4l2_framebuffer *vb = arg;
int formatIdx;
if (dga == 0) {
return -EINVAL;
}
if(!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_ADMIN)) {
return -EPERM;
}
PDEBUG(DBG_IOCTL, "VIDIOC_S_FBUF base=%p, width=%d, height=%d, pixelformat=%d, bpl=%d",
vb->base, vb->fmt.width, vb->fmt.height, vb->fmt.pixelformat,vb->fmt.bytesperline);
for (formatIdx=0; formatIdx <= USBVISION_SUPPORTED_PALETTES; formatIdx++) {
if (formatIdx == USBVISION_SUPPORTED_PALETTES) {
return -EINVAL; // no matching video_format
}
if ((vb->fmt.pixelformat == usbvision_v4l2_format[formatIdx].format) &&
(usbvision_v4l2_format[formatIdx].supported)) {
break; //found matching video_format
}
}
if (vb->fmt.bytesperline<1) {
return -EINVAL;
}
if (usbvision->overlay) {
return -EBUSY;
}
down(&usbvision->lock);
if (usbvision->overlay_base) {
iounmap(usbvision->overlay_base);
usbvision->vid_buf_valid = 0;
}
usbvision->overlay_base = ioremap((ulong)vb->base, vb->fmt.height * vb->fmt.bytesperline);
if (usbvision->overlay_base) {
usbvision->vid_buf_valid = 1;
}
usbvision->vid_buf = *vb;
usbvision->overlay_frame.v4l2_format = usbvision_v4l2_format[formatIdx];
up(&usbvision->lock);
return 0;
}
case VIDIOC_ENUM_FMT:
{
struct v4l2_fmtdesc *vfd = arg;
if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
return -EINVAL;
}
vfd->flags = 0;
vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
memset(vfd->reserved, 0, sizeof(vfd->reserved));
return 0;
}
case VIDIOC_G_FMT:
{
struct v4l2_format *vf = arg;
switch (vf->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
{
vf->fmt.pix.width = usbvision->curwidth;
vf->fmt.pix.height = usbvision->curheight;
vf->fmt.pix.pixelformat = usbvision->palette.format;
vf->fmt.pix.bytesperline = usbvision->curwidth*usbvision->palette.bytes_per_pixel;
vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
}
return 0;
default:
PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT invalid type %d",vf->type);
return -EINVAL;
}
PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT w=%d, h=%d",vf->fmt.win.w.width, vf->fmt.win.w.height);
return 0;
}
case VIDIOC_TRY_FMT:
case VIDIOC_S_FMT:
{
struct v4l2_format *vf = arg;
struct v4l2_clip *vc=NULL;
int on,formatIdx;
switch(vf->type) {
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
{
if (vf->fmt.win.clipcount>256) {
return -EDOM; /* Too many clips! */
}
// Do every clips.
vc = vmalloc(sizeof(struct v4l2_clip)*(vf->fmt.win.clipcount+4));
if (vc == NULL) {
return -ENOMEM;
}
if (vf->fmt.win.clipcount && copy_from_user(vc,vf->fmt.win.clips,sizeof(struct v4l2_clip)*vf->fmt.win.clipcount)) {
return -EFAULT;
}
on = usbvision->overlay; // Save overlay state
if (on) {
usbvision_cap(usbvision, 0);
}
// strange, it seems xawtv sometimes calls us with 0
// width and/or height. Ignore these values
if (vf->fmt.win.w.left == 0) {
vf->fmt.win.w.left = usbvision->vid_win.fmt.win.w.left;
}
if (vf->fmt.win.w.top == 0) {
vf->fmt.win.w.top = usbvision->vid_win.fmt.win.w.top;
}
// by now we are committed to the new data...
down(&usbvision->lock);
RESTRICT_TO_RANGE(vf->fmt.win.w.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
RESTRICT_TO_RANGE(vf->fmt.win.w.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
usbvision->vid_win = *vf;
usbvision->overlay_frame.width = vf->fmt.win.w.width;
usbvision->overlay_frame.height = vf->fmt.win.w.height;
usbvision_set_output(usbvision, vf->fmt.win.w.width, vf->fmt.win.w.height);
up(&usbvision->lock);
// Impose display clips
if (vf->fmt.win.w.left+vf->fmt.win.w.width > (unsigned int)usbvision->vid_buf.fmt.width) {
usbvision_new_clip(vf, vc, usbvision->vid_buf.fmt.width-vf->fmt.win.w.left, 0, vf->fmt.win.w.width-1, vf->fmt.win.w.height-1);
}
if (vf->fmt.win.w.top+vf->fmt.win.w.height > (unsigned int)usbvision->vid_buf.fmt.height) {
usbvision_new_clip(vf, vc, 0, usbvision->vid_buf.fmt.height-vf->fmt.win.w.top, vf->fmt.win.w.width-1, vf->fmt.win.w.height-1);
}
// built the requested clipping zones
usbvision_built_overlay(usbvision, vf->fmt.win.clipcount, vc);
vfree(vc);
// restore overlay state
if (on) {
usbvision_cap(usbvision, 1);
}
usbvision->vid_win_valid = 1;
PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT overlay x=%d, y=%d, w=%d, h=%d, chroma=%x, clips=%d",
vf->fmt.win.w.left, vf->fmt.win.w.top, vf->fmt.win.w.width, vf->fmt.win.w.height, vf->fmt.win.chromakey, vf->fmt.win.clipcount);
return 0;
}
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
{
/* Find requested format in available ones */
for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
if(vf->fmt.pix.pixelformat == usbvision_v4l2_format[formatIdx].format) {
usbvision->palette = usbvision_v4l2_format[formatIdx];
break;
}
}
/* robustness */
if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
return -EINVAL;
}
RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
// by now we are committed to the new data...
down(&usbvision->lock);
usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
up(&usbvision->lock);
PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT grabdisplay w=%d, h=%d, format=%s",
vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
return 0;
}
default:
return -EINVAL;
}
}
case VIDIOC_OVERLAY:
{
int *v = arg;
if ( (dga == 0) &&
(usbvision->palette.format != V4L2_PIX_FMT_YVU420) &&
(usbvision->palette.format != V4L2_PIX_FMT_YUV422P) ) {
PDEBUG(DBG_IOCTL, "VIDIOC_OVERLAY DGA disabled");
return -EINVAL;
}
if (*v == 0) {
usbvision_cap(usbvision, 0);
}
else {
// are VIDIOCSFBUF and VIDIOCSWIN done?
if ((usbvision->vid_buf_valid == 0) || (usbvision->vid_win_valid == 0)) {
PDEBUG(DBG_IOCTL, "VIDIOC_OVERLAY vid_buf_valid %d; vid_win_valid %d",
usbvision->vid_buf_valid, usbvision->vid_win_valid);
return -EINVAL;
}
usbvision_cap(usbvision, 1);
}
PDEBUG(DBG_IOCTL, "VIDIOC_OVERLAY %s", (*v)?"on":"off");
return 0;
}
default:
return -ENOIOCTLCMD;
}
return 0;
}
static int usbvision_v4l2_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
return video_usercopy(inode, file, cmd, arg, usbvision_v4l2_do_ioctl);
}
static ssize_t usbvision_v4l2_read(struct file *file, char *buf,
size_t count, loff_t *ppos)
{
struct video_device *dev = video_devdata(file);
struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
int noblock = file->f_flags & O_NONBLOCK;
unsigned long lock_flags;
int frmx = -1;
int ret,i;
struct usbvision_frame *frame;
PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__, (unsigned long)count, noblock);
if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
return -EFAULT;
/* no stream is running, make it running ! */
usbvision->streaming = Stream_On;
call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
/* First, enqueue as many frames as possible (like a user of VIDIOC_QBUF would do) */
for(i=0;i<USBVISION_NUMFRAMES;i++) {
frame = &usbvision->frame[i];
if(frame->grabstate == FrameState_Unused) {
/* Mark it as ready and enqueue frame */
frame->grabstate = FrameState_Ready;
frame->scanstate = ScanState_Scanning;
frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
/* set v4l2_format index */
frame->v4l2_format = usbvision->palette;
spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
list_add_tail(&frame->frame, &usbvision->inqueue);
spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
}
}
/* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
if (list_empty(&(usbvision->outqueue))) {
if(noblock)
return -EAGAIN;
ret = wait_event_interruptible
(usbvision->wait_frame,
!list_empty(&(usbvision->outqueue)));
if (ret)
return ret;
}
spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
frame = list_entry(usbvision->outqueue.next,
struct usbvision_frame, frame);
list_del(usbvision->outqueue.next);
spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
if(debug & DBG_IOCTL) { // do not spend computing time for debug stuff if not needed !
if(usbvision_counter == 100) {
PDEBUG(DBG_IOCTL, "VIDIOC_DQBUF delta=%d",(unsigned)(jiffies-usbvision_timestamp));
usbvision_counter = 0;
usbvision_timestamp = jiffies;
}
else {
usbvision_counter++;
}
}
/* An error returns an empty frame */
if (frame->grabstate == FrameState_Error) {
frame->bytes_read = 0;
return 0;
}
PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld", __FUNCTION__,
frame->index, frame->bytes_read, frame->scanlength);
/* copy bytes to user space; we allow for partials reads */
if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
count = frame->scanlength - frame->bytes_read;
if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
return -EFAULT;
}
frame->bytes_read += count;
PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld", __FUNCTION__,
(unsigned long)count, frame->bytes_read);
// For now, forget the frame if it has not been read in one shot.
/* if (frame->bytes_read >= frame->scanlength) {// All data has been read */
frame->bytes_read = 0;
/* Mark it as available to be used again. */
usbvision->frame[frmx].grabstate = FrameState_Unused;
/* } */
return count;
}
static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
{
unsigned long size = vma->vm_end - vma->vm_start,
start = vma->vm_start;
void *pos;
u32 i;
struct video_device *dev = video_devdata(file);
struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
if (!USBVISION_IS_OPERATIONAL(usbvision))
return -EFAULT;
if (!(vma->vm_flags & VM_WRITE) ||
size != PAGE_ALIGN(usbvision->max_frame_size)) {
return -EINVAL;
}
for (i = 0; i < USBVISION_NUMFRAMES; i++) {
if (((usbvision->max_frame_size*i) >> PAGE_SHIFT) == vma->vm_pgoff)
break;
}
if (i == USBVISION_NUMFRAMES) {
PDEBUG(DBG_FUNC, "mmap: user supplied mapping address is out of range");
return -EINVAL;
}
/* VM_IO is eventually going to replace PageReserved altogether */
vma->vm_flags |= VM_IO;
vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
pos = usbvision->frame[i].data;
while (size > 0) {
if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
PDEBUG(DBG_FUNC, "mmap: vm_insert_page failed");
return -EAGAIN;
}
start += PAGE_SIZE;
pos += PAGE_SIZE;
size -= PAGE_SIZE;
}
return 0;
}
/*
* Here comes the stuff for radio on usbvision based devices
*
*/
static int usbvision_radio_open(struct inode *inode, struct file *file)
{
struct video_device *dev = video_devdata(file);
struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
struct v4l2_frequency freq;
int errCode = 0;
PDEBUG(DBG_RIO, "%s:", __FUNCTION__);
down(&usbvision->lock);
if (usbvision->user) {
err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__);
errCode = -EBUSY;
}
else {
if(PowerOnAtOpen) {
if (timer_pending(&usbvision->powerOffTimer)) {
del_timer(&usbvision->powerOffTimer);
}
if (usbvision->power == 0) {
usbvision_power_on(usbvision);
usbvision_init_i2c(usbvision);
}
}
// If so far no errors then we shall start the radio
usbvision->radio = 1;
call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
freq.frequency = 1517; //SWR3 @ 94.8MHz
call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, &freq);
usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
usbvision->user++;
}
if (errCode) {
if (PowerOnAtOpen) {
usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
usbvision_power_off(usbvision);
usbvision->initialized = 0;
}
}
up(&usbvision->lock);
return errCode;
}
static int usbvision_radio_close(struct inode *inode, struct file *file)
{
struct video_device *dev = video_devdata(file);
struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
int errCode = 0;
PDEBUG(DBG_RIO, "");
down(&usbvision->lock);
usbvision_audio_off(usbvision);
usbvision->radio=0;
usbvision->user--;
if (PowerOnAtOpen) {
mod_timer(&usbvision->powerOffTimer, jiffies + USBVISION_POWEROFF_TIME);
usbvision->initialized = 0;
}
up(&usbvision->lock);
if (usbvision->remove_pending) {
info("%s: Final disconnect", __FUNCTION__);
usbvision_release(usbvision);
}
PDEBUG(DBG_RIO, "success");
return errCode;
}
static int usbvision_do_radio_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, void *arg)
{
struct video_device *dev = video_devdata(file);
struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
if (!USBVISION_IS_OPERATIONAL(usbvision))
return -EIO;
switch (cmd) {
/***************************
* V4L2 IOCTLs *
***************************/
case VIDIOC_QUERYCAP:
{
struct v4l2_capability *vc=arg;
memset(vc, 0, sizeof(struct v4l2_capability));
strcpy(vc->driver,"usbvision radio");
strcpy(vc->card,usbvision->vcap.card);
strcpy(vc->bus_info,"usb");
vc->version = USBVISION_DRIVER_VERSION; /* version */
vc->capabilities = V4L2_CAP_TUNER; /* capabilities */
PDEBUG(DBG_RIO, "%s: VIDIOC_QUERYCAP", __FUNCTION__);
return 0;
}
case VIDIOC_QUERYCTRL:
{
struct v4l2_queryctrl *qc = arg;
switch(qc->id)
{
case V4L2_CID_AUDIO_VOLUME:
case V4L2_CID_AUDIO_MUTE:
return v4l2_ctrl_query_fill_std(qc);
break;
default:
return -EINVAL;
}
return 0;
}
case VIDIOC_G_CTRL:
{
struct v4l2_control *ctrl = arg;
PDEBUG(DBG_IOCTL, "VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
switch(ctrl->id) {
case V4L2_CID_AUDIO_VOLUME:
/* ctrl->value = usbvision->volume; */
break;
case V4L2_CID_AUDIO_MUTE:
ctrl->value = usbvision->AudioMute;
break;
default:
return -EINVAL;
}
return 0;
}
case VIDIOC_S_CTRL:
{
struct v4l2_control *ctrl = arg;
call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
PDEBUG(DBG_RIO, "%s: VIDIOC_S_CTRL id=%x value=%x", __FUNCTION__,ctrl->id,ctrl->value);
return 0;
}
case VIDIOC_G_TUNER:
{
struct v4l2_tuner *vt = arg;
if (!usbvision->have_tuner || vt->index) // Only tuner 0
return -EINVAL;
strcpy(vt->name, "Radio");
vt->type = V4L2_TUNER_RADIO;
vt->capability = V4L2_TUNER_CAP_STEREO;
// japan: 76.0 MHz - 89.9 MHz
// western europe: 87.5 MHz - 108.0 MHz
// russia: 65.0 MHz - 108.0 MHz
vt->rangelow = (int)(65*16);;
vt->rangehigh = (int)(108*16);
vt->audmode = V4L2_TUNER_MODE_STEREO;
vt->rxsubchans = V4L2_TUNER_SUB_STEREO;
call_i2c_clients(usbvision,VIDIOC_G_TUNER,&vt);
PDEBUG(DBG_RIO, "%s: VIDIOC_G_TUNER signal=%d", __FUNCTION__, vt->signal);
return 0;
}
case VIDIOC_S_TUNER:
{
struct v4l2_tuner *vt = arg;
// Only channel 0 has a tuner
if((vt->index) || (usbvision->channel)) {
return -EINVAL;
}
PDEBUG(DBG_RIO, "%s: VIDIOC_S_TUNER", __FUNCTION__);
return 0;
}
case VIDIOC_G_AUDIO:
{
struct v4l2_audio *va = arg;
memset(va,0, sizeof(va));
va->capability = V4L2_AUDCAP_STEREO;
strcpy(va->name, "Radio");
PDEBUG(DBG_IOCTL, "VIDIOC_G_AUDIO");
return 0;
}
case VIDIOC_S_AUDIO:
{
struct v4l2_audio *v = arg;
if(v->index) {
return -EINVAL;
}
PDEBUG(DBG_IOCTL, "VIDIOC_S_AUDIO");
// FIXME: void function ???
return 0;
}
case VIDIOC_G_FREQUENCY:
{
struct v4l2_frequency *freq = arg;
freq->tuner = 0; // Only one tuner
freq->type = V4L2_TUNER_RADIO;
freq->frequency = usbvision->freq;
PDEBUG(DBG_RIO, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
return 0;
}
case VIDIOC_S_FREQUENCY:
{
struct v4l2_frequency *freq = arg;
usbvision->freq = freq->frequency;
call_i2c_clients(usbvision, cmd, freq);
PDEBUG(DBG_RIO, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
return 0;
}
/***************************
* V4L1 IOCTLs *
***************************/
case VIDIOCGCAP:
{
struct video_capability *vc = arg;
memset(vc, 0, sizeof(struct video_capability));
strcpy(vc->name,usbvision->vcap.card);
vc->type = VID_TYPE_TUNER;
vc->channels = 1;
vc->audios = 1;
PDEBUG(DBG_RIO, "%s: VIDIOCGCAP", __FUNCTION__);
return 0;
}
case VIDIOCGTUNER:
{
struct video_tuner *vt = arg;
if((vt->tuner) || (usbvision->channel)) { /* Only tuner 0 */
return -EINVAL;
}
strcpy(vt->name, "Radio");
// japan: 76.0 MHz - 89.9 MHz
// western europe: 87.5 MHz - 108.0 MHz
// russia: 65.0 MHz - 108.0 MHz
vt->rangelow=(int)(65*16);
vt->rangehigh=(int)(108*16);
vt->flags= 0;
vt->mode = 0;
call_i2c_clients(usbvision,cmd,vt);
PDEBUG(DBG_RIO, "%s: VIDIOCGTUNER signal=%d", __FUNCTION__, vt->signal);
return 0;
}
case VIDIOCSTUNER:
{
struct video_tuner *vt = arg;
// Only channel 0 has a tuner
if((vt->tuner) || (usbvision->channel)) {
return -EINVAL;
}
PDEBUG(DBG_RIO, "%s: VIDIOCSTUNER", __FUNCTION__);
return 0;
}
case VIDIOCGAUDIO:
{
struct video_audio *va = arg;
memset(va,0, sizeof(struct video_audio));
call_i2c_clients(usbvision, cmd, va);
va->flags|=VIDEO_AUDIO_MUTABLE;
va->volume=1;
va->step=1;
strcpy(va->name, "Radio");
PDEBUG(DBG_RIO, "%s: VIDIOCGAUDIO", __FUNCTION__);
return 0;
}
case VIDIOCSAUDIO:
{
struct video_audio *va = arg;
if(va->audio) {
return -EINVAL;
}
if(va->flags & VIDEO_AUDIO_MUTE) {
if (usbvision_audio_mute(usbvision)) {
return -EFAULT;
}
}
else {
if (usbvision_audio_on(usbvision)) {
return -EFAULT;
}
}
PDEBUG(DBG_RIO, "%s: VIDIOCSAUDIO flags=0x%x)", __FUNCTION__, va->flags);
return 0;
}
case VIDIOCGFREQ:
{
unsigned long *freq = arg;
*freq = usbvision->freq;
PDEBUG(DBG_RIO, "%s: VIDIOCGFREQ freq = %ld00 kHz", __FUNCTION__, (*freq * 10)>>4);
return 0;
}
case VIDIOCSFREQ:
{
unsigned long *freq = arg;
usbvision->freq = *freq;
call_i2c_clients(usbvision, cmd, freq);
PDEBUG(DBG_RIO, "%s: VIDIOCSFREQ freq = %ld00 kHz", __FUNCTION__, (*freq * 10)>>4);
return 0;
}
default:
{
PDEBUG(DBG_RIO, "%s: Unknown command %x", __FUNCTION__, cmd);
return -ENOIOCTLCMD;
}
}
return 0;
}
static int usbvision_radio_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
return video_usercopy(inode, file, cmd, arg, usbvision_do_radio_ioctl);
}
/*
* Here comes the stuff for vbi on usbvision based devices
*
*/
static int usbvision_vbi_open(struct inode *inode, struct file *file)
{
struct video_device *dev = video_devdata(file);
struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
unsigned long freq;
int errCode = 0;
PDEBUG(DBG_RIO, "%s:", __FUNCTION__);
down(&usbvision->lock);
if (usbvision->user) {
err("%s: Someone tried to open an already opened USBVision VBI!", __FUNCTION__);
errCode = -EBUSY;
}
else {
if(PowerOnAtOpen) {
if (timer_pending(&usbvision->powerOffTimer)) {
del_timer(&usbvision->powerOffTimer);
}
if (usbvision->power == 0) {
usbvision_power_on(usbvision);
usbvision_init_i2c(usbvision);
}
}
// If so far no errors then we shall start the vbi device
//usbvision->vbi = 1;
call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
freq = 1517; //SWR3 @ 94.8MHz
call_i2c_clients(usbvision, VIDIOCSFREQ, &freq);
usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
usbvision->user++;
}
if (errCode) {
if (PowerOnAtOpen) {
usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
usbvision_power_off(usbvision);
usbvision->initialized = 0;
}
}
up(&usbvision->lock);
return errCode;
}
static int usbvision_vbi_close(struct inode *inode, struct file *file)
{
struct video_device *dev = video_devdata(file);
struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
int errCode = 0;
PDEBUG(DBG_RIO, "");
down(&usbvision->lock);
usbvision_audio_off(usbvision);
usbvision->vbi=0;
usbvision->user--;
if (PowerOnAtOpen) {
mod_timer(&usbvision->powerOffTimer, jiffies + USBVISION_POWEROFF_TIME);
usbvision->initialized = 0;
}
up(&usbvision->lock);
if (usbvision->remove_pending) {
info("%s: Final disconnect", __FUNCTION__);
usbvision_release(usbvision);
}
PDEBUG(DBG_RIO, "success");
return errCode;
}
static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, void *arg)
{
struct video_device *dev = video_devdata(file);
struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
if (!USBVISION_IS_OPERATIONAL(usbvision))
return -EIO;
switch (cmd) {
case VIDIOC_QUERYCAP:
{
struct v4l2_capability *vc=arg;
memset(vc, 0, sizeof(struct v4l2_capability));
strcpy(vc->driver,"usbvision vbi");
strcpy(vc->card,usbvision->vcap.card);
strcpy(vc->bus_info,"usb");
vc->version = USBVISION_DRIVER_VERSION; /* version */
vc->capabilities = V4L2_CAP_VBI_CAPTURE; /* capabilities */
PDEBUG(DBG_RIO, "%s: VIDIOC_QUERYCAP", __FUNCTION__);
return 0;
}
case VIDIOCGTUNER:
{
struct video_tuner *vt = arg;
if((vt->tuner) || (usbvision->channel)) { /* Only tuner 0 */
return -EINVAL;
}
strcpy(vt->name, "vbi");
// japan: 76.0 MHz - 89.9 MHz
// western europe: 87.5 MHz - 108.0 MHz
// russia: 65.0 MHz - 108.0 MHz
vt->rangelow=(int)(65*16);
vt->rangehigh=(int)(108*16);
vt->flags= 0;
vt->mode = 0;
call_i2c_clients(usbvision,cmd,vt);
PDEBUG(DBG_RIO, "%s: VIDIOCGTUNER signal=%d", __FUNCTION__, vt->signal);
return 0;
}
case VIDIOCSTUNER:
{
struct video_tuner *vt = arg;
// Only channel 0 has a tuner
if((vt->tuner) || (usbvision->channel)) {
return -EINVAL;
}
PDEBUG(DBG_RIO, "%s: VIDIOCSTUNER", __FUNCTION__);
return 0;
}
case VIDIOCGAUDIO:
{
struct video_audio *va = arg;
memset(va,0, sizeof(struct video_audio));
call_i2c_clients(usbvision, cmd, va);
va->flags|=VIDEO_AUDIO_MUTABLE;
va->volume=1;
va->step=1;
strcpy(va->name, "vbi");
PDEBUG(DBG_RIO, "%s: VIDIOCGAUDIO", __FUNCTION__);
return 0;
}
case VIDIOCSAUDIO:
{
struct video_audio *va = arg;
if(va->audio) {
return -EINVAL;
}
if(va->flags & VIDEO_AUDIO_MUTE) {
if (usbvision_audio_mute(usbvision)) {
return -EFAULT;
}
}
else {
if (usbvision_audio_on(usbvision)) {
return -EFAULT;
}
}
PDEBUG(DBG_RIO, "%s: VIDIOCSAUDIO flags=0x%x)", __FUNCTION__, va->flags);
return 0;
}
case VIDIOCGFREQ:
{
unsigned long *freq = arg;
*freq = usbvision->freq;
PDEBUG(DBG_RIO, "%s: VIDIOCGFREQ freq = %ld00 kHz", __FUNCTION__, (*freq * 10)>>4);
return 0;
}
case VIDIOCSFREQ:
{
unsigned long *freq = arg;
usbvision->freq = *freq;
call_i2c_clients(usbvision, cmd, freq);
PDEBUG(DBG_RIO, "%s: VIDIOCSFREQ freq = %ld00 kHz", __FUNCTION__, (*freq * 10)>>4);
return 0;
}
default:
{
PDEBUG(DBG_RIO, "%s: Unknown command %d", __FUNCTION__, cmd);
return -ENOIOCTLCMD;
}
}
return 0;
}
static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
}
static void usbvision_configure_video(struct usb_usbvision *usbvision)
{
int model,i;
if (usbvision == NULL)
return;
model = usbvision->DevModel;
usbvision->depth = 24;
usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
if (usbvision_device_data[usbvision->DevModel].Vin_Reg2 >= 0) {
usbvision->Vin_Reg2_Preset = usbvision_device_data[usbvision->DevModel].Vin_Reg2 & 0xff;
} else {
usbvision->Vin_Reg2_Preset = 0;
}
memset(&usbvision->vcap, 0, sizeof(usbvision->vcap));
strcpy(usbvision->vcap.driver, "USBVision");
strlcpy(usbvision->vcap.bus_info, usbvision->dev->dev.bus_id,
sizeof(usbvision->vcap.bus_info));
usbvision->vcap.capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
(dga ? (V4L2_FBUF_CAP_LIST_CLIPPING | V4L2_CAP_VIDEO_OVERLAY) : 0) |
(usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
usbvision->vcap.version = USBVISION_DRIVER_VERSION; /* version */
for (i = 0; i < TVNORMS; i++)
if (usbvision_device_data[model].VideoNorm == tvnorms[i].mode)
break;
if (i == TVNORMS)
i = 0;
usbvision->tvnorm = &tvnorms[i]; /* set default norm */
call_i2c_clients(usbvision, VIDIOC_S_STD,
&usbvision->tvnorm->id);
usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
usbvision->ctl_input = 0;
/* usbvision_muxsel(usbvision, usbvision->ctl_input); */
/* This should be here to make i2c clients to be able to register */
usbvision_audio_off(usbvision); //first switch off audio
if (!PowerOnAtOpen) {
usbvision_power_on(usbvision); //and then power up the noisy tuner
usbvision_init_i2c(usbvision);
}
}
//
// Video registration stuff
//
// Video template
static struct file_operations usbvision_fops = {
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
.owner = THIS_MODULE,
#endif
.open = usbvision_v4l2_open,
.release = usbvision_v4l2_close,
.read = usbvision_v4l2_read,
.mmap = usbvision_v4l2_mmap,
.ioctl = usbvision_v4l2_ioctl,
.llseek = no_llseek,
};
static struct video_device usbvision_video_template = {
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
.owner = THIS_MODULE,
#endif
.type = VID_TYPE_TUNER | VID_TYPE_CAPTURE,
.hardware = VID_HARDWARE_USBVISION,
.fops = &usbvision_fops,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
.name = "usbvision-video",
.release = video_device_release,
#endif
.minor = -1,
};
// Radio template
static struct file_operations usbvision_radio_fops = {
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
.owner = THIS_MODULE,
#endif
.open = usbvision_radio_open,
.release = usbvision_radio_close,
.ioctl = usbvision_radio_ioctl,
.llseek = no_llseek,
};
static struct video_device usbvision_radio_template=
{
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
.owner = THIS_MODULE,
#endif
.type = VID_TYPE_TUNER,
.hardware = VID_HARDWARE_USBVISION,
.fops = &usbvision_radio_fops,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
.release = video_device_release,
.name = "usbvision-radio",
#endif
.minor = -1,
};
// vbi template
static struct file_operations usbvision_vbi_fops = {
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
.owner = THIS_MODULE,
#endif
.open = usbvision_vbi_open,
.release = usbvision_vbi_close,
.ioctl = usbvision_vbi_ioctl,
.llseek = no_llseek,
};
static struct video_device usbvision_vbi_template=
{
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
.owner = THIS_MODULE,
#endif
.type = VID_TYPE_TUNER,
.hardware = VID_HARDWARE_USBVISION,
.fops = &usbvision_vbi_fops,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
.release = video_device_release,
.name = "usbvision-vbi",
#endif
.minor = -1,
};
static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
struct video_device *vdev_template,
char *name)
{
struct usb_device *usb_dev = usbvision->dev;
struct video_device *vdev;
if (usb_dev == NULL) {
err("%s: usbvision->dev is not set", __FUNCTION__);
return NULL;
}
vdev = video_device_alloc();
if (NULL == vdev) {
return NULL;
}
*vdev = *vdev_template;
// vdev->minor = -1;
vdev->dev = &usb_dev->dev;
snprintf(vdev->name, sizeof(vdev->name), "%s", name);
video_set_drvdata(vdev, usbvision);
return vdev;
}
// unregister video4linux devices
static void usbvision_unregister_video(struct usb_usbvision *usbvision)
{
// vbi Device:
if (usbvision->vbi) {
PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]", usbvision->vbi->minor & 0x1f);
if (usbvision->vbi->minor != -1) {
video_unregister_device(usbvision->vbi);
}
else {
video_device_release(usbvision->vbi);
}
usbvision->vbi = NULL;
}
// Radio Device:
if (usbvision->rdev) {
PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]", usbvision->rdev->minor & 0x1f);
if (usbvision->rdev->minor != -1) {
video_unregister_device(usbvision->rdev);
}
else {
video_device_release(usbvision->rdev);
}
usbvision->rdev = NULL;
}
// Video Device:
if (usbvision->vdev) {
PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]", usbvision->vdev->minor & 0x1f);
if (usbvision->vdev->minor != -1) {
video_unregister_device(usbvision->vdev);
}
else {
video_device_release(usbvision->vdev);
}
usbvision->vdev = NULL;
}
}
// register video4linux devices
static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
{
// Video Device:
usbvision->vdev = usbvision_vdev_init(usbvision, &usbvision_video_template, "USBVision Video");
if (usbvision->vdev == NULL) {
goto err_exit;
}
if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr)<0) {
goto err_exit;
}
info("USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]", usbvision->nr,usbvision->vdev->minor & 0x1f);
// Radio Device:
if (usbvision_device_data[usbvision->DevModel].Radio) {
// usbvision has radio
usbvision->rdev = usbvision_vdev_init(usbvision, &usbvision_radio_template, "USBVision Radio");
if (usbvision->rdev == NULL) {
goto err_exit;
}
if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr)<0) {
goto err_exit;
}
info("USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]", usbvision->nr, usbvision->rdev->minor & 0x1f);
}
// vbi Device:
if (usbvision_device_data[usbvision->DevModel].vbi) {
usbvision->vbi = usbvision_vdev_init(usbvision, &usbvision_vbi_template, "USBVision VBI");
if (usbvision->vdev == NULL) {
goto err_exit;
}
if (video_register_device(usbvision->vbi, VFL_TYPE_VBI, vbi_nr)<0) {
goto err_exit;
}
info("USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)", usbvision->nr,usbvision->vbi->minor & 0x1f);
}
// all done
return 0;
err_exit:
err("USBVision[%d]: video_register_device() failed", usbvision->nr);
usbvision_unregister_video(usbvision);
return -1;
}
/*
* usbvision_alloc()
*
* This code allocates the struct usb_usbvision. It is filled with default values.
*
* Returns NULL on error, a pointer to usb_usbvision else.
*
*/
static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
{
struct usb_usbvision *usbvision;
if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) == NULL) {
goto err_exit;
}
usbvision->dev = dev;
init_MUTEX(&usbvision->lock); /* to 1 == available */
// prepare control urb for control messages during interrupts
usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
if (usbvision->ctrlUrb == NULL) {
goto err_exit;
}
init_waitqueue_head(&usbvision->ctrlUrb_wq);
init_MUTEX(&usbvision->ctrlUrbLock); /* to 1 == available */
init_timer(&usbvision->powerOffTimer);
usbvision->powerOffTimer.data = (long) usbvision;
usbvision->powerOffTimer.function = usbvision_powerOffTimer;
return usbvision;
err_exit:
if (usbvision && usbvision->ctrlUrb) {
usb_free_urb(usbvision->ctrlUrb);
}
if (usbvision) {
kfree(usbvision);
}
return NULL;
}
/*
* usbvision_release()
*
* This code does final release of struct usb_usbvision. This happens
* after the device is disconnected -and- all clients closed their files.
*
*/
static void usbvision_release(struct usb_usbvision *usbvision)
{
PDEBUG(DBG_PROBE, "");
down(&usbvision->lock);
if (timer_pending(&usbvision->powerOffTimer)) {
del_timer(&usbvision->powerOffTimer);
}
usbvision->usbvision_used = 0;
usbvision->initialized = 0;
up(&usbvision->lock);
usbvision_remove_sysfs(usbvision->vdev);
usbvision_unregister_video(usbvision);
if(dga) {
if (usbvision->overlay_base) {
iounmap(usbvision->overlay_base);
}
}
if (usbvision->ctrlUrb) {
usb_free_urb(usbvision->ctrlUrb);
}
kfree(usbvision);
PDEBUG(DBG_PROBE, "success");
}
/*
* usbvision_probe()
*
* This procedure queries device descriptor and accepts the interface
* if it looks like USBVISION video device
*
*/
static int __devinit usbvision_probe(struct usb_interface *intf, const struct usb_device_id *devid)
{
struct usb_device *dev = interface_to_usbdev(intf);
__u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
const struct usb_host_interface *interface;
struct usb_usbvision *usbvision = NULL;
const struct usb_endpoint_descriptor *endpoint;
int model;
PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
dev->descriptor.idVendor, dev->descriptor.idProduct, ifnum);
/* Is it an USBVISION video dev? */
model = 0;
for(model = 0; usbvision_device_data[model].idVendor; model++) {
if (le16_to_cpu(dev->descriptor.idVendor) != usbvision_device_data[model].idVendor) {
continue;
}
if (le16_to_cpu(dev->descriptor.idProduct) != usbvision_device_data[model].idProduct) {
continue;
}
info("%s: %s found", __FUNCTION__, usbvision_device_data[model].ModelString);
break;
}
if (usbvision_device_data[model].idVendor == 0) {
return -ENODEV; //no matching device
}
if (usbvision_device_data[model].Interface >= 0) {
interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
}
else {
interface = &dev->actconfig->interface[ifnum]->altsetting[0];
}
endpoint = &interface->endpoint[1].desc;
if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC) {
err("%s: interface %d. has non-ISO endpoint!", __FUNCTION__, ifnum);
err("%s: Endpoint attribures %d", __FUNCTION__, endpoint->bmAttributes);
return -ENODEV;
}
if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
err("%s: interface %d. has ISO OUT endpoint!", __FUNCTION__, ifnum);
return -ENODEV;
}
usb_get_dev(dev);
if ((usbvision = usbvision_alloc(dev)) == NULL) {
err("%s: couldn't allocate USBVision struct", __FUNCTION__);
return -ENOMEM;
}
if (dev->descriptor.bNumConfigurations > 1) {
usbvision->bridgeType = BRIDGE_NT1004;
}
else if (usbvision_device_data[model].ModelString == "Dazzle Fusion Model DVC-90 Rev 1 (SECAM)") {
usbvision->bridgeType = BRIDGE_NT1005;
}
else {
usbvision->bridgeType = BRIDGE_NT1003;
}
PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
down(&usbvision->lock);
usbvision->nr = usbvision_nr++;
usbvision->have_tuner = usbvision_device_data[model].Tuner;
if (usbvision->have_tuner) {
usbvision->tuner_type = usbvision_device_data[model].TunerType;
}
usbvision->DevModel = model;
usbvision->remove_pending = 0;
usbvision->last_error = 0;
usbvision->iface = ifnum;
usbvision->ifaceAltInactive = 0;
usbvision->ifaceAltActive = 1;
usbvision->video_endp = endpoint->bEndpointAddress;
usbvision->isocPacketSize = 0;
usbvision->usb_bandwidth = 0;
usbvision->user = 0;
usbvision->streaming = Stream_Off;
usbvision_register_video(usbvision);
usbvision_configure_video(usbvision);
up(&usbvision->lock);
usb_set_intfdata (intf, usbvision);
usbvision_create_sysfs(usbvision->vdev);
PDEBUG(DBG_PROBE, "success");
return 0;
}
/*
* usbvision_disconnect()
*
* This procedure stops all driver activity, deallocates interface-private
* structure (pointed by 'ptr') and after that driver should be removable
* with no ill consequences.
*
*/
static void __devexit usbvision_disconnect(struct usb_interface *intf)
{
struct usb_usbvision *usbvision = usb_get_intfdata(intf);
PDEBUG(DBG_PROBE, "");
if (usbvision == NULL) {
err("%s: usb_get_intfdata() failed", __FUNCTION__);
return;
}
usb_set_intfdata (intf, NULL);
down(&usbvision->lock);
// At this time we ask to cancel outstanding URBs
usbvision_stop_isoc(usbvision);
if (usbvision->power) {
usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
usbvision_power_off(usbvision);
}
usbvision->remove_pending = 1; // Now all ISO data will be ignored
usb_put_dev(usbvision->dev);
usbvision->dev = NULL; // USB device is no more
up(&usbvision->lock);
if (usbvision->user) {
info("%s: In use, disconnect pending", __FUNCTION__);
wake_up_interruptible(&usbvision->wait_frame);
wake_up_interruptible(&usbvision->wait_stream);
}
else {
usbvision_release(usbvision);
}
PDEBUG(DBG_PROBE, "success");
}
static struct usb_driver usbvision_driver = {
.name = "usbvision",
.id_table = usbvision_table,
.probe = usbvision_probe,
.disconnect = usbvision_disconnect
};
/*
* customdevice_process()
*
* This procedure preprocesses CustomDevice parameter if any
*
*/
void customdevice_process(void)
{
usbvision_device_data[0]=usbvision_device_data[1];
usbvision_table[0]=usbvision_table[1];
if(CustomDevice)
{
char *parse=CustomDevice;
PDEBUG(DBG_PROBE, "CustomDevide=%s", CustomDevice);
/*format is CustomDevice="0x0573 0x4D31 0 7113 3 PAL 1 1 1 5 -1 -1 -1 -1 -1"
usbvision_device_data[0].idVendor;
usbvision_device_data[0].idProduct;
usbvision_device_data[0].Interface;
usbvision_device_data[0].Codec;
usbvision_device_data[0].VideoChannels;
usbvision_device_data[0].VideoNorm;
usbvision_device_data[0].AudioChannels;
usbvision_device_data[0].Radio;
usbvision_device_data[0].Tuner;
usbvision_device_data[0].TunerType;
usbvision_device_data[0].Vin_Reg1;
usbvision_device_data[0].Vin_Reg2;
usbvision_device_data[0].X_Offset;
usbvision_device_data[0].Y_Offset;
usbvision_device_data[0].Dvi_yuv;
usbvision_device_data[0].ModelString;
*/
rmspace(parse);
usbvision_device_data[0].ModelString="USBVISION Custom Device";
parse+=2;
sscanf(parse,"%x",&usbvision_device_data[0].idVendor);
goto2next(parse);
PDEBUG(DBG_PROBE, "idVendor=0x%.4X", usbvision_device_data[0].idVendor);
parse+=2;
sscanf(parse,"%x",&usbvision_device_data[0].idProduct);
goto2next(parse);
PDEBUG(DBG_PROBE, "idProduct=0x%.4X", usbvision_device_data[0].idProduct);
sscanf(parse,"%d",&usbvision_device_data[0].Interface);
goto2next(parse);
PDEBUG(DBG_PROBE, "Interface=%d", usbvision_device_data[0].Interface);
sscanf(parse,"%d",&usbvision_device_data[0].Codec);
goto2next(parse);
PDEBUG(DBG_PROBE, "Codec=%d", usbvision_device_data[0].Codec);
sscanf(parse,"%d",&usbvision_device_data[0].VideoChannels);
goto2next(parse);
PDEBUG(DBG_PROBE, "VideoChannels=%d", usbvision_device_data[0].VideoChannels);
switch(*parse)
{
case 'P':
PDEBUG(DBG_PROBE, "VideoNorm=PAL");
usbvision_device_data[0].VideoNorm=VIDEO_MODE_PAL;
break;
case 'S':
PDEBUG(DBG_PROBE, "VideoNorm=SECAM");
usbvision_device_data[0].VideoNorm=VIDEO_MODE_SECAM;
break;
case 'N':
PDEBUG(DBG_PROBE, "VideoNorm=NTSC");
usbvision_device_data[0].VideoNorm=VIDEO_MODE_NTSC;
break;
default:
PDEBUG(DBG_PROBE, "VideoNorm=PAL (by default)");
usbvision_device_data[0].VideoNorm=VIDEO_MODE_PAL;
break;
}
goto2next(parse);
sscanf(parse,"%d",&usbvision_device_data[0].AudioChannels);
goto2next(parse);
PDEBUG(DBG_PROBE, "AudioChannels=%d", usbvision_device_data[0].AudioChannels);
sscanf(parse,"%d",&usbvision_device_data[0].Radio);
goto2next(parse);
PDEBUG(DBG_PROBE, "Radio=%d", usbvision_device_data[0].Radio);
sscanf(parse,"%d",&usbvision_device_data[0].Tuner);
goto2next(parse);
PDEBUG(DBG_PROBE, "Tuner=%d", usbvision_device_data[0].Tuner);
sscanf(parse,"%d",&usbvision_device_data[0].TunerType);
goto2next(parse);
PDEBUG(DBG_PROBE, "TunerType=%d", usbvision_device_data[0].TunerType);
sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg1);
goto2next(parse);
PDEBUG(DBG_PROBE, "Vin_Reg1=%d", usbvision_device_data[0].Vin_Reg1);
sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg2);
goto2next(parse);
PDEBUG(DBG_PROBE, "Vin_Reg2=%d", usbvision_device_data[0].Vin_Reg2);
sscanf(parse,"%d",&usbvision_device_data[0].X_Offset);
goto2next(parse);
PDEBUG(DBG_PROBE, "X_Offset=%d", usbvision_device_data[0].X_Offset);
sscanf(parse,"%d",&usbvision_device_data[0].Y_Offset);
goto2next(parse);
PDEBUG(DBG_PROBE, "Y_Offset=%d", usbvision_device_data[0].Y_Offset);
sscanf(parse,"%d",&usbvision_device_data[0].Dvi_yuv);
PDEBUG(DBG_PROBE, "Dvi_yuv=%d", usbvision_device_data[0].Dvi_yuv);
//add to usbvision_table also
usbvision_table[0].match_flags=USB_DEVICE_ID_MATCH_DEVICE;
usbvision_table[0].idVendor=usbvision_device_data[0].idVendor;
usbvision_table[0].idProduct=usbvision_device_data[0].idProduct;
}
}
/*
* usbvision_init()
*
* This code is run to initialize the driver.
*
*/
static int __init usbvision_init(void)
{
int errCode;
PDEBUG(DBG_PROBE, "");
PDEBUG(DBG_IOCTL, "IOCTL debugging is enabled");
PDEBUG(DBG_IO, "IO debugging is enabled");
PDEBUG(DBG_RIO, "RIO debugging is enabled");
PDEBUG(DBG_HEADER, "HEADER debugging is enabled");
PDEBUG(DBG_PROBE, "PROBE debugging is enabled");
PDEBUG(DBG_IRQ, "IRQ debugging is enabled");
PDEBUG(DBG_ISOC, "ISOC debugging is enabled");
PDEBUG(DBG_PARSE, "PARSE debugging is enabled");
PDEBUG(DBG_SCRATCH, "SCRATCH debugging is enabled");
PDEBUG(DBG_FUNC, "FUNC debugging is enabled");
PDEBUG(DBG_I2C, "I2C debugging is enabled");
/* disable planar mode support unless compression enabled */
if (isocMode != ISOC_MODE_COMPRESS ) {
// FIXME : not the right way to set supported flag
usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
}
customdevice_process();
errCode = usb_register(&usbvision_driver);
if (errCode == 0) {
info(DRIVER_DESC " : " DRIVER_VERSION);
PDEBUG(DBG_PROBE, "success");
}
return errCode;
}
static void __exit usbvision_exit(void)
{
PDEBUG(DBG_PROBE, "");
usb_deregister(&usbvision_driver);
PDEBUG(DBG_PROBE, "success");
}
module_init(usbvision_init);
module_exit(usbvision_exit);
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* ---------------------------------------------------------------------------
* Local variables:
* c-basic-offset: 8
* End:
*/
View Git Blame Copy Permalink