Hi,
On Fri, Aug 3, 2012 at 6:20 PM, Koen Kooi <koen@xxxxxxxxxxxxxxxxxxxxx> wrote:
>
> Op 3 aug. 2012, om 14:38 heeft Sourav Poddar <sourav.poddar@xxxxxx> het volgende geschreven:
>
>> Add keypad data node in omap5 device tree file.
>> Also fill the device tree binding parameters
>> with the required value in "omap5-evm" dts file.
>>
>> Tested on omap5430 evm with 3.5 custom kernel.
>>
>> Cc: Benoit Cousson <b-cousson@xxxxxx>
>> Cc: Felipe Balbi <balbi@xxxxxx>
>> Cc: Santosh Shilimkar <santosh.shilimkar@xxxxxx>
>> Acked-by: Felipe Balbi <balbi@xxxxxx>
>> Signed-off-by: Sourav Poddar <sourav.poddar@xxxxxx>
>> ---
>> arch/arm/boot/dts/omap5-evm.dts | 12 ++++++++++++
>> arch/arm/boot/dts/omap5.dtsi | 5 +++++
>> 2 files changed, 17 insertions(+), 0 deletions(-)
>>
>> diff --git a/arch/arm/boot/dts/omap5-evm.dts b/arch/arm/boot/dts/omap5-evm.dts
>> index 45a8aeb..09fe941 100644
>> --- a/arch/arm/boot/dts/omap5-evm.dts
>> +++ b/arch/arm/boot/dts/omap5-evm.dts
>> @@ -17,6 +17,18 @@
>> device_type = "memory";
>> reg = <0x80000000 0x40000000>; /* 1 GB */
>> };
>> +
>> + keypad {
>> + keypad,num-rows = <8>;
>> + keypad,num-columns = <8>;
>> + linux,keymap = < 0x02020073
>> + 0x02030072
>> + 0x020400e7
>> + 0x02050066
>> + 0x0206006b
>> + 0x020700d9 >;
>> + linux,input-no-autorepeat;
>> + };
>
> This not a criticism on your patch, but a generic question about DT: Is there no way to have nice constants for keys like we have in the kernel, like KEY_POWER, KEY_UP, etc?
There is way, something like this ..
key_C {
keypad,row = <2>;
keypad,column = <1>;
linux,code = <46>;
};
But its not the preferred approach mainly because of the fact that
it is too big. So suppose, if we have 100 key codes, we will have
400 -500 lines of code in our dts file for the mapping only.
If no, does DT allow comments so I can look at a dts and see which
keycodes are mapped instead of having to dig up the sources?
Yes, comments are allowed and seems to be better option to do.
~Sourav
>
> regards,
>
> Koen
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