chips
is an XFree86 driver for Chips and Technologies video processors. The majority
of the Chips and Technologies chipsets are supported by this driver. In general
the limitation on the capabilities of this driver are determined by the
chipset on which it is run. Where possible, this driver provides full
acceleration and supports the following depths: 1, 4, 8, 15, 16, 24 and on
the latest chipsets an 8+16 overlay mode. All visual types are supported for
depth 1, 4 and 8 and both TrueColor and DirectColor visuals are supported
where possible. Multi-head configurations are supported on PCI or AGP buses.
SUPPORTED HARDWARE
The
chips
driver supports video processors on most of the bus types currently available.
The chipsets supported fall into one of three architectural classes. A
basic
architecture, the
WinGine
architecture and the newer
HiQV
architecture.
Basic Architecture
The supported chipsets are
ct65520, ct65525, ct65530, ct65535, ct65540, ct65545, ct65546
and
ct65548
Color depths 1, 4 and 8 are supported on all chipsets, while depths 15, 16
and 24 are supported only on the
65540, 65545, 65546
and
65548
chipsets. The driver is accelerated when used with the
65545, 65546
or
65548
chipsets, however the DirectColor visual is not available.
Wingine Architecture
The supported chipsets are
ct64200
and
ct64300
Color depths 1, 4 and 8 are supported on both chipsets, while depths 15, 16
and 24 are supported only on the
64300
chipsets. The driver is accelerated when used with the
64300
chipsets, however the DirectColor visual is not available.
HiQV Architecture
The supported chipsets are
ct65550, ct65554, ct65555, ct68554, ct69000
and
ct69030
Color depths 1, 4, 8, 15, 16, 24 and 8+16 are supported on all chipsets.
The DirectColor visual is supported on all color depths except the 8+16
overlay mode. Full acceleration is supplied for all chipsets.
CONFIGURATION DETAILS
Please refer to XF86Config(5x) for general configuration
details. This section only covers configuration details specific to this
driver.
The driver auto-detects the chipset type, but the following
ChipSet
names may optionally be specified in the config file
N'34'DeviceN'34'
section, and will override the auto-detection:
The driver will auto-detect the amount of video memory present for all
chipsets. But maybe overridden with the
VideoRam
entry in the config file
N'34'DeviceN'34'
section.
The following driver
Options
are supported, on one or more of the supported chipsets:
Option N'34'NoAccelN'34' N'34'booleanN'34'
Disable or enable acceleration. Default: acceleration is enabled.
Option N'34'NoLinearN'34' N'34'booleanN'34'
Disables linear addressing in cases where it is enabled by default.
Default: off
Option N'34'LinearN'34' N'34'booleanN'34'
Enables linear addressing in cases where it is disabled by default.
Default: off
Option N'34'HWCursorN'34' N'34'booleanN'34'
Enable or disable the HW cursor. Default: on.
Option N'34'SWCursorN'34' N'34'booleanN'34'
Enable or disable the HW cursor. Default: off.
Option N'34'STNN'34' N'34'booleanN'34'
Force detection of STN screen type. Default: off.
Option N'34'UseModelineN'34' N'34'booleanN'34'
Reprogram flat panel timings with values from the modeline. Default: off
Option N'34'FixPanelSizeN'34' N'34'booleanN'34'
Reprogram flat panel size with values from the modeline. Default: off
Option N'34'NoStretchN'34' N'34'booleanN'34'
This option disables the stretching on a mode on a flat panel to fill the
screen. Default: off
Option N'34'LcdCenterN'34' N'34'booleanN'34'
Center the mode displayed on the flat panel on the screen. Default: off
Option N'34'HWclocksN'34' N'34'booleanN'34'
Force the use of fixed hardware clocks on chips that support both fixed
and programmable clocks. Default: off
Option N'34'UseVclk1N'34' N'34'booleanN'34'
Use the Vclk1 programable clock on
HiQV
chipsets instead of Vclk2. Default: off
Option N'34'FPClock8N'34' N'34'floatN'34'
Option N'34'FPClock16N'34' N'34'floatN'34'
Option N'34'FPClock24N'34' N'34'floatN'34'
Option N'34'FPClock32N'34' N'34'floatN'34'
Force the use of a particular video clock speed for use with the
flat panel at a specified depth
Option N'34'MMION'34' N'34'booleanN'34'
Force the use of memory mapped IO for acceleration registers. Default: off
Option N'34'FullMMION'34' N'34'booleanN'34'
Force the use of memory mapped IO where it can be used. Default: off
Option N'34'SuspendHackN'34' N'34'booleanN'34'
Force driver to leave centering and stretching registers alone. This
can fix some laptop suspend/resume problems. Default: off
Option N'34'OverlayN'34'
Enable 8+24 overlay mode. Only appropriate for depth 24. Default: off.
Option N'34'ColorKeyN'34' N'34'integerN'34'
Set the colormap index used for the transparency key for the depth 8 plane
when operating in 8+16 overlay mode. The value must be in the range
2-255. Default: 255.
Option N'34'VideoKeyN'34' N'34'integerN'34'
This sets the default pixel value for the YUV video overlay key.
Default: undefined.
Option N'34'ShadowFBN'34' N'34'booleanN'34'
Enable or disable use of the shadow framebuffer layer. See
shadowfb(4) for further information. Default: off.
Option N'34'SyncOnGreenN'34' N'34'booleanN'34'
Enable or disable combining the sync signals with the green signal.
Default: off.
Option N'34'ShowCacheN'34' N'34'booleanN'34'
Enable or disable viewing offscreen memory. Used for debugging only
Default: off.
Option N'34'18bitBusN'34' N'34'booleanN'34'
Force the driver to assume that the flat panel has an 18bit data bus.
Default: off.
Option N'34'Crt2MemoryN'34' N'34'integerN'34'
In a dual-head mode (69030 only) this option selects the amount of memory
to set aside for the second head. If not specified, half the memory is used.
Default: off.
Option N'34'DualRefreshN'34' N'34'integerN'34'
The 69030 supports independent refresh rates on its two display channels.
This mode of operations uses additional memory bandwidth and thus limits
the maximum colour depth and refresh rate that can be achieved, and so is
off by default. Using this option forces the use of an independent refresh
rate on the two screens.
Default: off.