Revision eeb0d7d113895556db473ff1e638803d7d49bff9 authored by Rene Herman on 11 August 2008, 15:44:57 UTC, committed by Ingo Molnar on 11 August 2008, 16:36:03 UTC
commit 11a62a056093a7f25f1595fbd8bd5f93559572b6 turns some formerly nopped debugging printks in arch/x86/kernel/mppparse.c into regular ones. The one at the top of smp_scan_config() in particular also prints on !CONFIG_SMP/CONFIG_X86_LOCAL_APIC kernels and UP machines without anything resembling MP tables which makes their lowly UP owners wonder... Turn the former Dprintk()s into apic_printk()s instead meaning that their printing is dependent on passing the apic=verbose (or =debug) command line param. On 32-bit, "apic" is a __setup() param which isn't early enough for this code and therefore needs a followup changing it into an early_param(). On 64-bit, it already is. Signed-off-by: Rene Herman <rene.herman@gmail.com> Cc: Andrew Morton <akpm@osdl.org> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
1 parent 3c7569b
bt8xxgpio.txt
===============================================================
== BT8XXGPIO driver ==
== ==
== A driver for a selfmade cheap BT8xx based PCI GPIO-card ==
== ==
== For advanced documentation, see ==
== http://www.bu3sch.de/btgpio.php ==
===============================================================
A generic digital 24-port PCI GPIO card can be built out of an ordinary
Brooktree bt848, bt849, bt878 or bt879 based analog TV tuner card. The
Brooktree chip is used in old analog Hauppauge WinTV PCI cards. You can easily
find them used for low prices on the net.
The bt8xx chip does have 24 digital GPIO ports.
These ports are accessible via 24 pins on the SMD chip package.
==============================================
== How to physically access the GPIO pins ==
==============================================
The are several ways to access these pins. One might unsolder the whole chip
and put it on a custom PCI board, or one might only unsolder each individual
GPIO pin and solder that to some tiny wire. As the chip package really is tiny
there are some advanced soldering skills needed in any case.
The physical pinouts are drawn in the following ASCII art.
The GPIO pins are marked with G00-G23
G G G G G G G G G G G G G G G G G G
0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
---------------------------------------------------------------------------
--| ^ ^ |--
--| pin 86 pin 67 |--
--| |--
--| pin 61 > |-- G18
--| |-- G19
--| |-- G20
--| |-- G21
--| |-- G22
--| pin 56 > |-- G23
--| |--
--| Brooktree 878/879 |--
--| |--
--| |--
--| |--
--| |--
--| |--
--| |--
--| |--
--| |--
--| |--
--| |--
--| |--
--| |--
--| |--
--| O |--
--| |--
---------------------------------------------------------------------------
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
^
This is pin 1
Computing file changes ...
