Re: [PATCH 3/4] rtc: omap: add rtc wakeup support to alarm events

[Sekhar Nori <nsekhar-l0cyMroinI0@public.gmane.org>]

On 7/2/2013 11:34 AM, Hebbar, Gururaja wrote:
> On Tue, Jul 02, 2013 at 11:32:34, Nori, Sekhar wrote:
>> On 6/28/2013 3:05 PM, Hebbar Gururaja wrote:
>>> On some platforms (like AM33xx), a special register (RTC_IRQWAKEEN)
>>> is available to enable Alarm Wakeup feature. This register needs to be
>>> properly handled for the rtcwake to work properly.
>>>
>>> Platforms using such IP should set "ti,am3352-rtc" in rtc device dt
>>> compatibility node.
>>>
>>> Signed-off-by: Hebbar Gururaja <gururaja.hebbar@ti.com>
>>> Cc: Grant Likely <grant.likely@linaro.org>
>>> Cc: Rob Herring <rob.herring@calxeda.com>
>>> Cc: Rob Landley <rob@landley.net>
>>> Cc: Sekhar Nori <nsekhar@ti.com>
>>> Cc: Kevin Hilman <khilman@linaro.org>
>>> Cc: Alessandro Zummo <a.zummo@towertech.it>
>>> Cc: rtc-linux@googlegroups.com
>>> Cc: devicetree-discuss@lists.ozlabs.org
>>> Cc: linux-doc@vger.kernel.org
>>> ---
>>
>> [...]
>>
>>> -#define	OMAP_RTC_DATA_DA830_IDX	1
>>> +#define	OMAP_RTC_DATA_DA830_IDX		1
>>> +#define	OMAP_RTC_DATA_AM335X_IDX	2
>>>  
>>>  static struct platform_device_id omap_rtc_devtype[] = {
>>>  	{
>>> @@ -309,6 +321,9 @@ static struct platform_device_id omap_rtc_devtype[] = {
>>>  	}, {
>>>  		.name	= "da830-rtc",
>>>  		.driver_data = OMAP_RTC_HAS_KICKER,
>>> +	}, {
>>> +		.name	= "am335x-rtc",
>>
>> may be use am3352-rtc here just to keep the platform device name and of
>> compatible in sync.
> 
> Correct. I will update the same in v2.
> 
>>
>>> +		.driver_data = OMAP_RTC_HAS_KICKER | OMAP_RTC_HAS_IRQWAKEEN,
>>>  	},
>>>  	{},
>>
>> It is better to use the index defined above in the static initialization
>> so they remain in sync.
> 
> Sorry. I didn’t get this.
> 

See example below I provided. If its still not clear, let me know what
is not clear.

>> 	...
>> 	[OMAP_RTC_DATA_DA830_IDX] = {
>> 		.name	= "da830-rtc",
>> 		.driver_data = OMAP_RTC_HAS_KICKER,
>> 	},

Thanks,
Sekhar
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