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Commit e0b13b5b authored by Paul Parsons's avatar Paul Parsons Committed by Samuel Ortiz
Browse files

mfd: Add asic3 based LED suspend/resume handlers 



Added led suspend/resume handlers to the leds/leds-asic3 and mfd/asic3 drivers.
On suspend the leds will be turned off and their clocks disabled. On resume the
reverse.

Signed-off-by: default avatarPaul Parsons <lost.distance@yahoo.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 3c6e3653

drivers/leds/leds-asic3.c

+34 −1
Original line number Diff line number Diff line
@@ -107,9 +107,10 @@ static int __devinit asic3_led_probe(struct platform_device *pdev) 
	}



	led->cdev->name = led->name;

	led->cdev->default_trigger = led->default_trigger;

	led->cdev->flags = LED_CORE_SUSPENDRESUME;

	led->cdev->brightness_set = brightness_set;

	led->cdev->blink_set = blink_set;

	led->cdev->default_trigger = led->default_trigger;



	ret = led_classdev_register(&pdev->dev, led->cdev);

	if (ret < 0)
@@ -136,12 +137,44 @@ static int __devexit asic3_led_remove(struct platform_device *pdev) 
	return mfd_cell_disable(pdev);

}



static int asic3_led_suspend(struct device *dev)

{

	struct platform_device *pdev = to_platform_device(dev);

	const struct mfd_cell *cell = mfd_get_cell(pdev);

	int ret;



	ret = 0;

	if (cell->suspend)

		ret = (*cell->suspend)(pdev);



	return ret;

}



static int asic3_led_resume(struct device *dev)

{

	struct platform_device *pdev = to_platform_device(dev);

	const struct mfd_cell *cell = mfd_get_cell(pdev);

	int ret;



	ret = 0;

	if (cell->resume)

		ret = (*cell->resume)(pdev);



	return ret;

}



static const struct dev_pm_ops asic3_led_pm_ops = {

	.suspend	= asic3_led_suspend,

	.resume		= asic3_led_resume,

};



static struct platform_driver asic3_led_driver = {

	.probe		= asic3_led_probe,

	.remove		= __devexit_p(asic3_led_remove),

	.driver		= {

		.name	= "leds-asic3",

		.owner	= THIS_MODULE,

		.pm	= &asic3_led_pm_ops,

	},

};

drivers/mfd/asic3.c

+19 −0
Original line number Diff line number Diff line
@@ -813,24 +813,43 @@ static int asic3_leds_disable(struct platform_device *pdev) 
	return 0;

}



static int asic3_leds_suspend(struct platform_device *pdev)

{

	const struct mfd_cell *cell = mfd_get_cell(pdev);

	struct asic3 *asic = dev_get_drvdata(pdev->dev.parent);



	while (asic3_gpio_get(&asic->gpio, ASIC3_GPIO(C, cell->id)) != 0)

		msleep(1);



	asic3_clk_disable(asic, &asic->clocks[clock_ledn[cell->id]]);



	return 0;

}



static struct mfd_cell asic3_cell_leds[ASIC3_NUM_LEDS] = {

	[0] = {

		.name          = "leds-asic3",

		.id            = 0,

		.enable        = asic3_leds_enable,

		.disable       = asic3_leds_disable,

		.suspend       = asic3_leds_suspend,

		.resume        = asic3_leds_enable,

	},

	[1] = {

		.name          = "leds-asic3",

		.id            = 1,

		.enable        = asic3_leds_enable,

		.disable       = asic3_leds_disable,

		.suspend       = asic3_leds_suspend,

		.resume        = asic3_leds_enable,

	},

	[2] = {

		.name          = "leds-asic3",

		.id            = 2,

		.enable        = asic3_leds_enable,

		.disable       = asic3_leds_disable,

		.suspend       = asic3_leds_suspend,

		.resume        = asic3_leds_enable,

	},

};