This is a driver for Matrox video cards with TV capture capabilities.
This file was last updated on 20040105 for the Linux 2.6.7 kernel.

To build this driver perform the following steps:

        - Obtain and configure a Linux 2.6.7 (or later) kernel.  Make sure
          the following options are enabled:
              CONFIG_MODULES,
              CONFIG_I2C, CONFIG_I2C_ALGOBIT,
              CONFIG_FB, CONFIG_FB_MATROX, CONFIG_FB_MATROX_G450,
              CONFIG_FB_MATROX_I2C,
              CONFIG_VIDEO_DEV, CONFIG_VIDEO_BT848

        - Patch the kernel with the included kernel-2.6.7.patch file.  For
          example:
              cd /path/to/linux/soruce/
              patch -p1 < /path/to/driver_fb/kernel-2.6.7.patch
          And then build and install the kernel.

        - Build the driver_fb source code:
              cd /path/to/driver_fb
              make LINUX_SOURCE=/path/to/linux/source/

To load the driver:

        - Run the included iv script as root.  For example:
              su -
              cd /path/to/driver_fb
              ./iv

Known issues:

        - The matrox framebuffer module included in some early 2.6
          kernels can cause screen corruption when loaded.  (At least
          on some G400 cards..)  This is a problem with the module in
          the Linux source.  To get around this, I load the module
          while in X-Windows and then toggle between virtual consoles
          to reset the screen.

        - The driver reports "videodev: "mgacap-0" has no release
          callback. Please fix your driver for proper sysfs support, see
          http://lwn.net/Articles/36850/" when loaded.  This is a bug that
          needs to be addressed, but it should only cause problems if the
          kernel module is unloaded while a user is touching the videodev
          sysfs files.

        - When running xawtv after loading the kernel module, the overlay
          window might show garbage.  (This happens at least on some G400
          cards..)  To get around this, I toggle to and from PAL/NTSC
          mode.
