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authorLinus Torvalds <torvalds@g5.osdl.org>2006-03-21 09:25:47 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-21 09:25:47 -0800
commit2bf2154c6bb5599e3ec3f73c34861a0b12aa839e (patch)
tree62691bd915e2e3c2e6648306d3fb893f7a1dc57e /Documentation
parent08a4ecee986dd98e86090ff5faac4782b6765aed (diff)
parent71a8924bee63d891f6256d560e32416a458440b3 (diff)
Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6: (81 commits) [PATCH] USB: omninet: fix up debugging comments [PATCH] USB serial: add navman driver [PATCH] USB: Fix irda-usb use after use [PATCH] USB: rtl8150 small fix [PATCH] USB: ftdi_sio: add Icom ID1 USB product and vendor ids [PATCH] USB: cp2101: add new device IDs [PATCH] USB: fix check_ctrlrecip to allow control transfers in state ADDRESS [PATCH] USB: vicam.c: fix a NULL pointer dereference [PATCH] USB: ZC0301 driver bugfix [PATCH] USB: add support for Creativelabs Silvercrest USB keyboard [PATCH] USB: storage: new unusual_devs.h entry: Mitsumi 7in1 Card Reader [PATCH] USB: storage: unusual_devs.h entry 0420:0001 [PATCH] USB: storage: another unusual_devs.h entry [PATCH] USB: storage: sandisk unusual_devices entry [PATCH] USB: fix initdata issue in isp116x-hcd [PATCH] USB: usbcore: usb_set_configuration oops (NULL ptr dereference) [PATCH] USB: usbcore: Don't assume a USB configuration includes any interfaces [PATCH] USB: ub 03 drop stall clearing [PATCH] USB: ub 02 remove diag [PATCH] USB: ub 01 remove first_open ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/usb/et61x251.txt10
-rw-r--r--Documentation/usb/sn9c102.txt11
-rw-r--r--Documentation/usb/zc0301.txt254
3 files changed, 274 insertions, 1 deletions
diff --git a/Documentation/usb/et61x251.txt b/Documentation/usb/et61x251.txt
index b44dda407ce..29340282ab5 100644
--- a/Documentation/usb/et61x251.txt
+++ b/Documentation/usb/et61x251.txt
@@ -176,6 +176,14 @@ Description: Force the application to unmap previously mapped buffer memory
1 = force memory unmapping (save memory)
Default: 0
-------------------------------------------------------------------------------
+Name: frame_timeout
+Type: uint array (min = 0, max = 64)
+Syntax: <n[,...]>
+Description: Timeout for a video frame in seconds. This parameter is
+ specific for each detected camera. This parameter can be
+ changed at runtime thanks to the /sys filesystem interface.
+Default: 2
+-------------------------------------------------------------------------------
Name: debug
Type: ushort
Syntax: <n>
@@ -266,7 +274,7 @@ the V4L2 interface.
10. Notes for V4L2 application developers
-========================================
+=========================================
This driver follows the V4L2 API specifications. In particular, it enforces two
rules:
diff --git a/Documentation/usb/sn9c102.txt b/Documentation/usb/sn9c102.txt
index c6b76414172..b957beae560 100644
--- a/Documentation/usb/sn9c102.txt
+++ b/Documentation/usb/sn9c102.txt
@@ -196,6 +196,14 @@ Description: Force the application to unmap previously mapped buffer memory
1 = force memory unmapping (save memory)
Default: 0
-------------------------------------------------------------------------------
+Name: frame_timeout
+Type: uint array (min = 0, max = 64)
+Syntax: <n[,...]>
+Description: Timeout for a video frame in seconds. This parameter is
+ specific for each detected camera. This parameter can be
+ changed at runtime thanks to the /sys filesystem interface.
+Default: 2
+-------------------------------------------------------------------------------
Name: debug
Type: ushort
Syntax: <n>
@@ -321,6 +329,7 @@ Vendor ID Product ID
--------- ----------
0x0c45 0x6001
0x0c45 0x6005
+0x0c45 0x6007
0x0c45 0x6009
0x0c45 0x600d
0x0c45 0x6024
@@ -370,6 +379,7 @@ HV7131D Hynix Semiconductor, Inc.
MI-0343 Micron Technology, Inc.
OV7630 OmniVision Technologies, Inc.
PAS106B PixArt Imaging, Inc.
+PAS202BCA PixArt Imaging, Inc.
PAS202BCB PixArt Imaging, Inc.
TAS5110C1B Taiwan Advanced Sensor Corporation
TAS5130D1B Taiwan Advanced Sensor Corporation
@@ -493,6 +503,7 @@ Many thanks to following persons for their contribute (listed in alphabetical
order):
- Luca Capello for the donation of a webcam;
+- Philippe Coval for having helped testing the PAS202BCA image sensor;
- Joao Rodrigo Fuzaro, Joao Limirio, Claudio Filho and Caio Begotti for the
donation of a webcam;
- Jon Hollstrom for the donation of a webcam;
diff --git a/Documentation/usb/zc0301.txt b/Documentation/usb/zc0301.txt
new file mode 100644
index 00000000000..f55262c6733
--- /dev/null
+++ b/Documentation/usb/zc0301.txt
@@ -0,0 +1,254 @@
+
+ ZC0301 Image Processor and Control Chip
+ Driver for Linux
+ =======================================
+
+ - Documentation -
+
+
+Index
+=====
+1. Copyright
+2. Disclaimer
+3. License
+4. Overview and features
+5. Module dependencies
+6. Module loading
+7. Module parameters
+8. Supported devices
+9. Notes for V4L2 application developers
+10. Contact information
+11. Credits
+
+
+1. Copyright
+============
+Copyright (C) 2006 by Luca Risolia <luca.risolia@studio.unibo.it>
+
+
+2. Disclaimer
+=============
+This software is not developed or sponsored by Z-Star Microelectronics Corp.
+Trademarks are property of their respective owner.
+
+
+3. License
+==========
+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.
+
+
+4. Overview and features
+========================
+This driver supports the video interface of the devices mounting the ZC0301
+Image Processor and Control Chip.
+
+The driver relies on the Video4Linux2 and USB core modules. It has been
+designed to run properly on SMP systems as well.
+
+The latest version of the ZC0301 driver can be found at the following URL:
+http://www.linux-projects.org/
+
+Some of the features of the driver are:
+
+- full compliance with the Video4Linux2 API (see also "Notes for V4L2
+ application developers" paragraph);
+- available mmap or read/poll methods for video streaming through isochronous
+ data transfers;
+- automatic detection of image sensor;
+- video format is standard JPEG;
+- dynamic driver control thanks to various module parameters (see "Module
+ parameters" paragraph);
+- up to 64 cameras can be handled at the same time; they can be connected and
+ disconnected from the host many times without turning off the computer, if
+ the system supports hotplugging;
+
+
+5. Module dependencies
+======================
+For it to work properly, the driver needs kernel support for Video4Linux and
+USB.
+
+The following options of the kernel configuration file must be enabled and
+corresponding modules must be compiled:
+
+ # Multimedia devices
+ #
+ CONFIG_VIDEO_DEV=m
+
+ # USB support
+ #
+ CONFIG_USB=m
+
+In addition, depending on the hardware being used, the modules below are
+necessary:
+
+ # USB Host Controller Drivers
+ #
+ CONFIG_USB_EHCI_HCD=m
+ CONFIG_USB_UHCI_HCD=m
+ CONFIG_USB_OHCI_HCD=m
+
+The ZC0301 controller also provides a built-in microphone interface. It is
+supported by the USB Audio driver thanks to the ALSA API:
+
+ # Sound
+ #
+ CONFIG_SOUND=y
+
+ # Advanced Linux Sound Architecture
+ #
+ CONFIG_SND=m
+
+ # USB devices
+ #
+ CONFIG_SND_USB_AUDIO=m
+
+And finally:
+
+ # USB Multimedia devices
+ #
+ CONFIG_USB_ZC0301=m
+
+
+6. Module loading
+=================
+To use the driver, it is necessary to load the "zc0301" module into memory
+after every other module required: "videodev", "usbcore" and, depending on
+the USB host controller you have, "ehci-hcd", "uhci-hcd" or "ohci-hcd".
+
+Loading can be done as shown below:
+
+ [root@localhost home]# modprobe zc0301
+
+At this point the devices should be recognized. You can invoke "dmesg" to
+analyze kernel messages and verify that the loading process has gone well:
+
+ [user@localhost home]$ dmesg
+
+
+7. Module parameters
+====================
+Module parameters are listed below:
+-------------------------------------------------------------------------------
+Name: video_nr
+Type: short array (min = 0, max = 64)
+Syntax: <-1|n[,...]>
+Description: Specify V4L2 minor mode number:
+ -1 = use next available
+ n = use minor number n
+ You can specify up to 64 cameras this way.
+ For example:
+ video_nr=-1,2,-1 would assign minor number 2 to the second
+ registered camera and use auto for the first one and for every
+ other camera.
+Default: -1
+-------------------------------------------------------------------------------
+Name: force_munmap
+Type: bool array (min = 0, max = 64)
+Syntax: <0|1[,...]>
+Description: Force the application to unmap previously mapped buffer memory
+ before calling any VIDIOC_S_CROP or VIDIOC_S_FMT ioctl's. Not
+ all the applications support this feature. This parameter is
+ specific for each detected camera.
+ 0 = do not force memory unmapping
+ 1 = force memory unmapping (save memory)
+Default: 0
+-------------------------------------------------------------------------------
+Name: frame_timeout
+Type: uint array (min = 0, max = 64)
+Syntax: <n[,...]>
+Description: Timeout for a video frame in seconds. This parameter is
+ specific for each detected camera. This parameter can be
+ changed at runtime thanks to the /sys filesystem interface.
+Default: 2
+-------------------------------------------------------------------------------
+Name: debug
+Type: ushort
+Syntax: <n>
+Description: Debugging information level, from 0 to 3:
+ 0 = none (use carefully)
+ 1 = critical errors
+ 2 = significant informations
+ 3 = more verbose messages
+ Level 3 is useful for testing only, when only one device
+ is used at the same time. It also shows some more informations
+ about the hardware being detected. This module parameter can be
+ changed at runtime thanks to the /sys filesystem interface.
+Default: 2
+-------------------------------------------------------------------------------
+
+
+8. Supported devices
+====================
+None of the names of the companies as well as their products will be mentioned
+here. They have never collaborated with the author, so no advertising.
+
+From the point of view of a driver, what unambiguously identify a device are
+its vendor and product USB identifiers. Below is a list of known identifiers of
+devices mounting the ZC0301 Image Processor and Control Chips:
+
+Vendor ID Product ID
+--------- ----------
+0x041e 0x4017
+0x041e 0x401c
+0x041e 0x401e
+0x041e 0x4034
+0x041e 0x4035
+0x046d 0x08ae
+0x0ac8 0x0301
+0x10fd 0x8050
+
+The list above does not imply that all those devices work with this driver: up
+until now only the ones that mount the following image sensors are supported;
+kernel messages will always tell you whether this is the case:
+
+Model Manufacturer
+----- ------------
+PAS202BCB PixArt Imaging, Inc.
+
+
+9. Notes for V4L2 application developers
+========================================
+This driver follows the V4L2 API specifications. In particular, it enforces two
+rules:
+
+- exactly one I/O method, either "mmap" or "read", is associated with each
+file descriptor. Once it is selected, the application must close and reopen the
+device to switch to the other I/O method;
+
+- although it is not mandatory, previously mapped buffer memory should always
+be unmapped before calling any "VIDIOC_S_CROP" or "VIDIOC_S_FMT" ioctl's.
+The same number of buffers as before will be allocated again to match the size
+of the new video frames, so you have to map the buffers again before any I/O
+attempts on them.
+
+
+10. Contact information
+=======================
+The author may be contacted by e-mail at <luca.risolia@studio.unibo.it>.
+
+GPG/PGP encrypted e-mail's are accepted. The GPG key ID of the author is
+'FCE635A4'; the public 1024-bit key should be available at any keyserver;
+the fingerprint is: '88E8 F32F 7244 68BA 3958 5D40 99DA 5D2A FCE6 35A4'.
+
+
+11. Credits
+===========
+- Informations about the chip internals needed to enable the I2C protocol have
+ been taken from the documentation of the ZC030x Video4Linux1 driver written
+ by Andrew Birkett <andy@nobugs.org>;
+- The initialization values of the ZC0301 controller connected to the PAS202BCB
+ image sensor have been taken from the SPCA5XX driver maintained by
+ Michel Xhaard <mxhaard@magic.fr>.