diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /Documentation/input/cs461x.txt |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'Documentation/input/cs461x.txt')
-rw-r--r-- | Documentation/input/cs461x.txt | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/Documentation/input/cs461x.txt b/Documentation/input/cs461x.txt new file mode 100644 index 000000000000..6181747a14d8 --- /dev/null +++ b/Documentation/input/cs461x.txt | |||
@@ -0,0 +1,45 @@ | |||
1 | Preface. | ||
2 | |||
3 | This is a new low-level driver to support analog joystick attached to | ||
4 | Crystal SoundFusion CS4610/CS4612/CS4615. This code is based upon | ||
5 | Vortex/Solo drivers as an example of decoration style, and ALSA | ||
6 | 0.5.8a kernel drivers as an chipset documentation and samples. | ||
7 | |||
8 | This version does not have cooked mode support; the basic code | ||
9 | is present here, but have not tested completely. The button analysis | ||
10 | is completed in this mode, but the axis movement is not. | ||
11 | |||
12 | Raw mode works fine with analog joystick front-end driver and cs461x | ||
13 | driver as a backend. I've tested this driver with CS4610, 4-axis and | ||
14 | 4-button joystick; I mean the jstest utility. Also I've tried to | ||
15 | play in xracer game using joystick, and the result is better than | ||
16 | keyboard only mode. | ||
17 | |||
18 | The sensitivity and calibrate quality have not been tested; the two | ||
19 | reasons are performed: the same hardware cannot work under Win95 (blue | ||
20 | screen in VJOYD); I have no documentation on my chip; and the existing | ||
21 | behavior in my case was not raised the requirement of joystick calibration. | ||
22 | So the driver have no code to perform hardware related calibration. | ||
23 | |||
24 | The patch contains minor changes of Config.in and Makefile files. All | ||
25 | needed code have been moved to one separate file cs461x.c like ns558.c | ||
26 | This driver have the basic support for PCI devices only; there is no | ||
27 | ISA or PnP ISA cards supported. AFAIK the ns558 have support for Crystal | ||
28 | ISA and PnP ISA series. | ||
29 | |||
30 | The driver works witn ALSA drivers simultaneously. For exmple, the xracer | ||
31 | uses joystick as input device and PCM device as sound output in one time. | ||
32 | There are no sound or input collisions detected. The source code have | ||
33 | comments about them; but I've found the joystick can be initialized | ||
34 | separately of ALSA modules. So, you canm use only one joystick driver | ||
35 | without ALSA drivers. The ALSA drivers are not needed to compile or | ||
36 | run this driver. | ||
37 | |||
38 | There are no debug information print have been placed in source, and no | ||
39 | specific options required to work this driver. The found chipset parameters | ||
40 | are printed via printk(KERN_INFO "..."), see the /var/log/messages to | ||
41 | inspect cs461x: prefixed messages to determine possible card detection | ||
42 | errors. | ||
43 | |||
44 | Regards, | ||
45 | Viktor | ||