linux-kernel - Re: [PATCH v3] altera_ps2: Add devicetree support

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Message-ID: <4D5689DD.3050508@wytron.com.tw>
Date:	Sat, 12 Feb 2011 21:23:41 +0800
From:	Thomas Chou <thomas@...ron.com.tw>
To:	Grant Likely <grant.likely@...retlab.ca>
CC:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-kernel@...r.kernel.org, nios2-dev@...c.et.ntust.edu.tw,
	linux-input@...r.kernel.org, devicetree-discuss@...ts.ozlabs.org,
	Walter Goossens <waltergoossens@...e.nl>
Subject: Re: [PATCH v3] altera_ps2: Add devicetree support

On 02/12/2011 05:26 PM, Grant Likely wrote:
> On Thu, Feb 03, 2011 at 11:05:04AM +0800, Thomas Chou wrote:
>> Signed-off-by: Walter Goossens<waltergoossens@...e.nl>
>> Signed-off-by: Thomas Chou<thomas@...ron.com.tw>
>> ---
>> v2 use const and add compat version.
>> v3 change compatible vendor to ALTR.
>>     add dts binding doc.
>>
>>   .../devicetree/bindings/serio/altera_ps2.txt       |    4 ++++
>>   drivers/input/serio/altera_ps2.c                   |   11 +++++++++--
>>   2 files changed, 13 insertions(+), 2 deletions(-)
>>   create mode 100644 Documentation/devicetree/bindings/serio/altera_ps2.txt
>>
>> diff --git a/Documentation/devicetree/bindings/serio/altera_ps2.txt b/Documentation/devicetree/bindings/serio/altera_ps2.txt
>> new file mode 100644
>> index 0000000..4d9eecc
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/serio/altera_ps2.txt
>> @@ -0,0 +1,4 @@
>> +Altera UP PS/2 controller
>> +
>> +Required properties:
>> +- compatible : should be "ALTR,ps2-1.0".
>> diff --git a/drivers/input/serio/altera_ps2.c b/drivers/input/serio/altera_ps2.c
>> index 7998560..d94b4a3 100644
>> --- a/drivers/input/serio/altera_ps2.c
>> +++ b/drivers/input/serio/altera_ps2.c
>> @@ -19,6 +19,7 @@
>>   #include<linux/platform_device.h>
>>   #include<linux/io.h>
>>   #include<linux/slab.h>
>> +#include<linux/of.h>
>>
>>   #define DRV_NAME "altera_ps2"
>>
>> @@ -173,6 +174,12 @@ static int __devexit altera_ps2_remove(struct platform_device *pdev)
>>   	return 0;
>>   }
>>
>> +static const struct of_device_id altera_ps2_match[] = {
>> +	{ .compatible = "ALTR,ps2-1.0", },
>> +	{},
>> +}
>> +MODULE_DEVICE_TABLE(of, altera_ps2_match);
>> +
>
> Should be:
>
> #ifdef CONFIG_OF
> static const struct of_device_id altera_ps2_match[] = {
> 	{ .compatible = "ALTR,ps2-1.0", },
> 	{},
> }
> MODULE_DEVICE_TABLE(of, altera_ps2_match);
> #else /* CONFIG_OF */
> #define altera_ps2_match NULL
> #endif /* CONFIG_OF */
>
> Otherwise the driver will be advertising that it provides device tree
> support when CONFIG_OF is disabled.

Thanks. Will update all related drivers.

- Thomas

>
> Otherwise, looks good to me.  Feel free to add my acked-by line.
>
> g.
>
>>   /*
>>    * Our device driver structure
>>    */
>> @@ -182,6 +189,7 @@ static struct platform_driver altera_ps2_driver = {
>>   	.driver	= {
>>   		.name	= DRV_NAME,
>>   		.owner	= THIS_MODULE,
>> +		.of_match_table = altera_ps2_match,
>>   	},
>>   };
>>
>> @@ -189,13 +197,12 @@ static int __init altera_ps2_init(void)
>>   {
>>   	return platform_driver_register(&altera_ps2_driver);
>>   }
>> +module_init(altera_ps2_init);
>>
>>   static void __exit altera_ps2_exit(void)
>>   {
>>   	platform_driver_unregister(&altera_ps2_driver);
>>   }
>> -
>> -module_init(altera_ps2_init);
>>   module_exit(altera_ps2_exit);
>>
>>   MODULE_DESCRIPTION("Altera University Program PS2 controller driver");
>> --
>> 1.7.3.5
>>
>

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