Re: [PATCH v8 3/3] OMAP4:keypad: PM runtime

[Shubhrajyoti <shubhrajyoti@ti.com>]

Missed adding linux omap

On Tuesday 08 February 2011 02:00 PM, Shubhrajyoti wrote:
> Hello,
> Any comments/suggestions.
>
> Thanks,
>
> On Monday 27 December 2010 11:21 AM, shubhrajyoti@ti.com wrote:
>> From: Abraham Arce<x0066660@ti.com>
>>
>> Enable Runtime PM functionality in OMAP4 driver based on the 
>> following assumptions
>>
>> A minimal pm runtime get/put approach is implemented in probe/remove 
>> calls
>> respectively.
>>
>> - Keyboard controller in wakeup domain so it is always on and
>>    power impact may be minimal
>> - In OMAP4 the device control is at module/device level and ick/fclk 
>> level control is
>>    difficult so cutting of clocks will prevent interrupts.
>>
>> Signed-off-by: Abraham Arce<x0066660@ti.com>
>> Cc: Kevin Hilman<khilman@deeprootsystems.com>
>> Signed-off-by: Shubhrajyoti D<shubhrajyoti@ti.com>
>> ---
>>   drivers/input/keyboard/omap4-keypad.c |    8 ++++++++
>>   1 files changed, 8 insertions(+), 0 deletions(-)
>>
>> diff --git a/drivers/input/keyboard/omap4-keypad.c 
>> b/drivers/input/keyboard/omap4-keypad.c
>> index 45bd097..fcfbb9b 100644
>> --- a/drivers/input/keyboard/omap4-keypad.c
>> +++ b/drivers/input/keyboard/omap4-keypad.c
>> @@ -29,6 +29,7 @@
>>   #include<linux/io.h>
>>   #include<linux/input.h>
>>   #include<linux/slab.h>
>> +#include<linux/pm_runtime.h>
>>
>>   #include<plat/omap4-keypad.h>
>>
>> @@ -239,6 +240,9 @@ static int __devinit omap4_keypad_probe(struct 
>> platform_device *pdev)
>>       matrix_keypad_build_keymap(pdata->keymap_data, row_shift,
>>               input_dev->keycode, input_dev->keybit);
>>
>> +    pm_runtime_enable(&pdev->dev);
>> +    pm_runtime_get_sync(&pdev->dev);
>> +
>>       omap4_keypad_config(keypad_data);
>>
>>       error = request_irq(keypad_data->irq, omap4_keypad_interrupt,
>> @@ -278,6 +282,10 @@ static int __devexit omap4_keypad_remove(struct 
>> platform_device *pdev)
>>       struct resource *res;
>>
>>       free_irq(keypad_data->irq, keypad_data);
>> +
>> +    pm_runtime_put_sync(&pdev->dev);
>> +    pm_runtime_disable(&pdev->dev);
>> +
>>       input_unregister_device(keypad_data->input);
>>
>>       iounmap(keypad_data->base);
>