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1. Sweex Input Devices Drivers
2. Sweex Input Devices Driver Updater
3. Sweex Input Devices Driver Device
4. Sweex Input Devices Driver Touchpad
5. Sweex Input Devices Driver

Introduction

Welcome to the USB Video Class Linux device driver home.

The Shuttle’s driver comes loaded with preset shortcuts for over 100+ of the most popular software programs on the market. On top of that, every short cut for every program is fully customizable to the hotkey of your choice. To save even more time we have built in the ability to assign multiple tasks (macros) to a single button! Audio: Analog Devices ADI 198x Integrated HD Audio Driver Version A01. Audio: Analog Devices ADI 198x Integrated HD Audio Driver Version A01. You need to install Sweex 64 bit mouse drivers in order to mouse function properly in 64bit Windows 7 Operating System. Since you have checked it with other Windows 7 64bit operating system, there seems to be issue with Mouse drivers. Hence I would suggest you to contact the Mouse manufacturer support and check for availability of 64bit drivers.

The goal of this project is to provide all necessary software components to fully support UVC compliant devices in Linux. This include a V4L2 kernel device driver and patches for user-space tools.

The USB Device Class Definition for Video Devices, or USB Video Class, defines video streaming functionality on the Universal Serial Bus. Much like nearly all mass storage devices (USB flash disks, external SATA disk enclosures, ...) can be managed by a single driver because they conform to the USB Mass Storage specification, UVC compliant peripherals only need a generic driver.

The UVC specification covers webcams, digital camcorders, analog video converters, analog and digital television tuners, and still-image cameras that support video streaming for both video input and output.

Due to the limited available man power and the broad scope of the UVC specification, the Linux UVC project will concentrate the development efforts on video input devices, especially webcams. Video output devices are supported in bulk mode only.

Support requests are handled through the Linux media development mailing list. Don't forget to read the FAQ before sending an e-mail to the list.

Status

The Linux UVC projects is currently focussing on kernel support for UVC devices. The driver implements the Video4Linux 2 (V4L2) API. Support for the deprecated V4L1 API will not be added.

The following table lists the UVC features supported by the Linux UVC driver.

Supported devices

The table below lists known UVC devices. Other UVC compliant video input devices are very likely to be supported. If your UVC device is not listed below, please report it to the Linux media development mailing list.

• Device works
• Device works with issues
• Device is untested
• Device doesn't work

¹ First and second generation Logitech webcams suffer from firmware bug which make the camera somehow unstable. As the issue is timing-related, the exact impact of the bug on a particular user can't be predicted. If you plan to buy a Logitech webcam, consider getting one of the models not affected by the bug. More information about the issue, including possible workarounds, are available on the QuickCam Team website.

² Starting at version 2.6.22, the Linux kernel includes a USB audio bug fix which triggers a (possibly identical to the above) bug in first and second generation Logitech webcams. See the Linux UVC wiki for a workaround.

³ This camera module is known to be mounted upside-down in some notebooks. Applications that use the libv4l library should display the video correctly, as libv4l detects upside-down cameras and rotates the image automatically. See Hans de Goede's post on the linux-uvc-devel mailing list for more information. For applications that don't use libv4l, try holding your computer upside-down.

⁴ iSight webcams require a proprietary firmware that can't be redistributed. Tools to extract the firmware from the MacOS X driver and load it into the device are available at http://bersace03.free.fr/ift/.

⁵ Video corruption has been noticed when the camera is connected to a USB 1.1 controller. For better performances, connect the camera to a USB 2.0 controller.

⁶ Some revisions of this model suffer from issues similar to those described in [1]. Only specific part numbers are affected. See Logitech UVC devices list for more information.

⁷ Creative Labs released at least two different devices under the Live! Cam Video IM Pro model name. While the one listed in this table is UVC compatible, the other(s) might not be. If in doubt, check the webcam USB product ID.

⁸ Resolutions below 640x480 might only work at the full 30fps frame rate.

⁹ This Device ID is known to be used by several different webcams among which at least one is currently not supported by the driver. If you plan to buy this camera make sure it matches the product name.

¹⁰ The camera has been reported not to work when connected to a USB 1.1 hub.

¹¹ Those cameras claim to have a true 1.3MP or 2MP CMOS sensor, but the highest resolution reported by the UVC descriptors is 640x480.

¹² Recent versions of the device use UVC as a façade. They talk a vendor-specific protocol with a vendor-provided Windows driver, and trying to handle them with the UVC protocol results in low frame rate and corrupted frames in most resolutions. Device BCD 1.00 is known to be affected, BCD 0.02 seems to work.

¹³ Despite being able to work with lower USB bandwidths, this device always requests the maximum possible bandwidth, even for the MJPEG format. Using one of those cameras in conjunction with another USB device (including the camera internal microphone) will likely fail. You can tell the uvcvideo driver to estimate the required bandwidth instead of trusting the camera by setting the FIX_BANDWIDTH quirk. This will only affect uncompressed formats, and even there there's no guarantee of success. See the FAQ for more information.

¹⁴ The camera severely underexpose images under low-light conditions when using any frame rate other than the default (which also happens to be the maximum), probably because auto-exposure is only enabled at the default or maximum frame rate. The RESTRICT_FRAME_RATE quirk has been added to the driver to ignore all non-default frame rates.

¹⁵ Some versions of this camera have been reported to randomly time out or stall in response to valid UVC control requests, probably as a result of a race condition bug in the camera firmware. This can sometime lead to the camera failing to be recognized by the kernel. Little can be done to fix the problem.

¹⁶ At least some versions of this camera severely overexpose images when the manual exposure control is set to a value other than 2500 divided by an exponent of 2. Auto-exposure isn't affected.

¹⁷ Full-resolution scans are only possible through still image capture, which the uvcvideo driver doesn't support yet.

¹⁸ This camera might have issues with USB auto-suspend on Linux kernels between v2.3.37 and v3.5 (inclusive). See the FAQ for more information.

Download

Linux 2.6.26 and newer includes the Linux UVC driver natively. You will not need to download the driver sources manually unless you want to test a newer version or help with development.

Source code for the Linux UVC kernel driver is maintained in a GIT repository on linuxtv.org.

• If you are an end-user the easiest way to retrieve an up-to-date driver is to clone the media build git repository located at http://git.linuxtv.org/media_build.git. The code includes support for older kernel versions, but might lag behind the uvcvideo git repository by a few days.

  Instructions to build and install drivers from the linuxtv.org trees are available on linuxtv.org.

• If you are a developer, or if you're interested in tracking the Linux UVC driver, you probably want to get a local copy of the source code repository. To help save bandwidth, please follow these instructions:

The old SVN repository has been archived and isn't available on the SVN server anymore. The repository archive can be downloaded here.

Documentation

UVC-specific parts of the driver API are documented in the Linux kernel tree starting at version 2.6.38, in Documentation/video4linux/uvcvideo.txt. Older kernel versions implemented a different API that is now deprecated and scheduled for removal in 2.6.39.

If you're upgrading from a pre-2.6.38 kernel, you should upgrade your userspace UVC tools. Instructions to install the latest uvcdynctrl tool are available from the QuickCam Team website. Standard V4L2 applications do not need to be upgraded.

More (mostly outdated) information can be found in the unofficial wiki.

For kernel developers, the USB Video Class specification is available on the USB Implementers Forum website.

Sweex Input Devices Drivers

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Sweex Input Devices Driver Updater

This article clarifies some confusion that vendors have experienced about how hardware that complies with PCI Power Management (PCI-PM) interacts with device drivers in the operating system and about how PCI-PM integrates with ACPI. For more information, see https://www.uefi.org/specifications

Device drivers and PCI power management

This discussion assumes that you are familiar with how Windows Driver Model (WDM) drivers handle power management events, as described in the current Windows DDK. In general, the responsibilities for device drivers are as follows:

• Bus drivers: Bus drivers are responsible for enumerating, configuring, and controlling devices. For PCI-PM, the PCI driver is responsible for reading the PCI-PM registers to determine the capabilities of the hardware. When POWER IRPs request power state changes, the PCI driver writes to the PCI power management registers to set the hardware to different Dx states.

  When a device is enabled for wake-up, the PCI driver writes to PCI-PM registers to enable the device to fire PME (ACPI will also take an action, see the next section). Finally, when ACPI determines that the PCI bus is waking the system, the PCI driver scans PCI configuration space looking for which device is asserting PME, disables PME in that device, and notifies the driver for that device.

• Device driver: The specific driver for the device is responsible for saving and restoring device context, and requesting power state changes as the policy owner for the device. When the device driver receives a POWER IRP requesting a lower device power state change, the device driver is responsible for saving any proprietary device context needed to later turn on the device. In some cases, there may be nothing to save.

Sweex Input Devices Driver Device

PCI-PM registers are strictly the domain of the PCI driver--the IHV's device driver does not need to access any of these registers. Doing so would cause the system to not work reliably. The device driver's responsibility is to perform only proprietary actions.

Integrating ACPI and PCI PM

Some devices, particularly motherboard video devices in portables, may require both PCI Power Management as well as ACPI Source Language Assembler (ASL) to completely power manage the device. The PCI Power Management registers would control the internal state of a device, such as internal clocks and power planes. ASL would control the external state, such as external clocks and power planes, or in the case of video controllers, ASL would control the video backlights. Note that ASL and PCI-PM can only be combined on motherboard devices.

The OnNow architecture is a layered architecture, handling the integration of the device driver, PCI driver, and ACPI driver (and ASL) naturally. The following scenarios show the order in which drivers are called to handle these devices.

Note

For the above scenarios to work as described, a WDM driver must forward POWER IRPs correctly as described in the current version of the Microsoft Windows DDK.

Scenario 1: Turning off a device

1. Device driver: Saves proprietary device state.
2. PCI driver: Saves Plug and Play configuration, disables the device (interrupts and BARs), and puts the device in D3 using PCI-PM registers.
3. ACPI driver: Runs ASL code (_PS3 and _OFF for power resources no longer in use) to control the state external to the chip.

Scenario 2: PCI power management and device drivers

1. ACPI driver: Runs ASL code (_PS0 and _ON for any OnNow required power resources) to control the state external to the chip.
2. PCI driver: Puts the device in D0 using PCI-PM registers and restores Plug and Play configuration (interrupts and BARs--these might be different from what the device was previously on).
3. Device driver: Restores proprietary context in the device.

Scenario 3: Enabling wake-up

1. Device driver: Sets proprietary registers in the chip to enable wake-up. For example, in pattern matching network wake-up, this is when the patterns would be programmed into the adapter.
2. PCI driver: Sets the wake-up enable bits in the PCI PM registers to allow the device to assert PME.
3. ACPI driver: Enables the GPE in the chip set associated with PME (as described by the _PRW object listed under the root PCI bus).

Scenario 4: Wake-up

Sweex Input Devices Driver Touchpad

1. ACPI driver: Wakes and scans the GPE status bits for wake-up events, disabling GPEs for set GPE status bits, and running any _Lxx or _Exx methods associated with set GPE bits. In response to a wake-up notification on the PCI bus, the ACPI driver will complete the PCI driver's WAIT_WAKE IRP to notify the PCI driver that it is waking the system.
2. PCI driver: Scans configuration space looking for any devices with a set PME status bit. For each device, it disables PME and completes the WAIT_WAKE IRP for that device to inform the driver that it is asserting wake-up. The PCI driver stops scanning for wake devices when it has made a complete pass through all PCI devices having not found any asserting PME and when PME stops being asserted.
3. Device driver: Requests the device be put in D0 (see scenario 2) and sets any proprietary registers in the chip required to handle the wake-up event.

Call to action on PCI power management and device drivers

Sweex Input Devices Driver

• Integrate ACPI and PCI-PM capabilities into your devices as described in this article.
• The PCI Power Management specification is available at https://www.pcisig.com. This link leaves the Microsoft.com site.
• ACPI Specification available at https://www.uefi.org/specifications. This link leaves the Microsoft.com site.
• The ACPI Component Architecture (ACPICA) compiler can be found at https://acpica.org/downloads/binary-tools.