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Diffstat (limited to 'kernel/Documentation/input/cs461x.txt')
| -rw-r--r-- | kernel/Documentation/input/cs461x.txt | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/kernel/Documentation/input/cs461x.txt b/kernel/Documentation/input/cs461x.txt new file mode 100644 index 000000000..202e9dbac --- /dev/null +++ b/kernel/Documentation/input/cs461x.txt @@ -0,0 +1,45 @@ +Preface. + +This is a new low-level driver to support analog joystick attached to +Crystal SoundFusion CS4610/CS4612/CS4615. This code is based upon +Vortex/Solo drivers as an example of decoration style, and ALSA +0.5.8a kernel drivers as an chipset documentation and samples. + +This version does not have cooked mode support; the basic code +is present here, but have not tested completely. The button analysis +is completed in this mode, but the axis movement is not. + +Raw mode works fine with analog joystick front-end driver and cs461x +driver as a backend. I've tested this driver with CS4610, 4-axis and +4-button joystick; I mean the jstest utility. Also I've tried to +play in xracer game using joystick, and the result is better than +keyboard only mode. + +The sensitivity and calibrate quality have not been tested; the two +reasons are performed: the same hardware cannot work under Win95 (blue +screen in VJOYD); I have no documentation on my chip; and the existing +behavior in my case was not raised the requirement of joystick calibration. +So the driver have no code to perform hardware related calibration. + +The patch contains minor changes of Config.in and Makefile files. All +needed code have been moved to one separate file cs461x.c like ns558.c +This driver have the basic support for PCI devices only; there is no +ISA or PnP ISA cards supported. AFAIK the ns558 have support for Crystal +ISA and PnP ISA series. + +The driver works with ALSA drivers simultaneously. For example, the xracer +uses joystick as input device and PCM device as sound output in one time. +There are no sound or input collisions detected. The source code have +comments about them; but I've found the joystick can be initialized +separately of ALSA modules. So, you can use only one joystick driver +without ALSA drivers. The ALSA drivers are not needed to compile or +run this driver. + +There are no debug information print have been placed in source, and no +specific options required to work this driver. The found chipset parameters +are printed via printk(KERN_INFO "..."), see the /var/log/messages to +inspect cs461x: prefixed messages to determine possible card detection +errors. + +Regards, +Viktor |