Re: [PATCH v3] input/keyboard: new OpenCores Keyboard Controller driver
From: Javier Herrero
Date: Mon Sep 14 2009 - 14:25:42 EST
Hello,
It has a bit long since last time I touched the driver, so I should also
try to refresh my memory about it :). I suppose that you're right in the
double allocation issue (I took another keyboard driver as a starting
point and probably the double allocation was already there...), so feel
free to introduce the change and I will test it as soon as I can.
About the exact scancode - key mapping, the reason is that since the
FPGA opencores device already implements a translation table, I found
that another translation table sounded a bit redundant.
Best regards,
Javier
Mike Frysinger escribiÃ:
On Mon, Sep 14, 2009 at 13:49, Dmitry Torokhov wrote:
On Monday 14 September 2009 10:40:03 am Mike Frysinger wrote:
+struct opencores_kbd {
+ struct input_dev *input;
+ struct resource *addr_res;
+ struct resource *irq_res;
+ unsigned short *keycode;
+};
Why do we allocate keycode table separately form the main structure?
the double alloc looked a little funny, but i didnt dive deep into the
details. but as you point this out, it seems to make sense to me.
any problems with that change Javier ?
i.e. we do:
struct ... { ... unsigned short keycode[NUM_KEYS]; }
rather than doing two calls to kmalloc
I think I still have some reservations with the notion that we can just
have exact "scancode" - KEY_* mapping and hardware producers will adjust
the hardware to follow the deriver but I guess it's OK...
considering this is a piece of "hardware" implemented in FPGAs, i
think it's ok too. if someone really needs more flexibility, then
they're free to extend the driver and submit a patch :).
-mike
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