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Commit fc30e68e authored by Shaohua Li's avatar Shaohua Li Committed by Len Brown
Browse files

ACPI, PNP: hook ACPI D-state to PNP suspend/resume 



applied after Rafel's 'PM: Update global suspend and hibernation operations framework' patch set

Signed-off-by: default avatarShaohua Li <shaohua.li@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent fd4aff1a

drivers/pnp/driver.c

+5 −0
Original line number Diff line number Diff line
@@ -167,6 +167,8 @@ static int pnp_bus_suspend(struct device *dev, pm_message_t state) 
	    		return error;

	}



	if (pnp_dev->protocol && pnp_dev->protocol->suspend)

		pnp_dev->protocol->suspend(pnp_dev, state);

	return 0;

}
@@ -179,6 +181,9 @@ static int pnp_bus_resume(struct device *dev) 
	if (!pnp_drv)

		return 0;



	if (pnp_dev->protocol && pnp_dev->protocol->resume)

		pnp_dev->protocol->resume(pnp_dev);



	if (!(pnp_drv->flags & PNP_DRIVER_RES_DO_NOT_CHANGE)) {

		error = pnp_start_dev(pnp_dev);

		if (error)

drivers/pnp/pnpacpi/core.c

+14 −0
Original line number Diff line number Diff line
@@ -119,11 +119,25 @@ static int pnpacpi_disable_resources(struct pnp_dev *dev) 
	return ACPI_FAILURE(status) ? -ENODEV : 0;

}



static int pnpacpi_suspend(struct pnp_dev *dev, pm_message_t state)

{

	return acpi_bus_set_power((acpi_handle)dev->data,

		acpi_pm_device_sleep_state(&dev->dev,

		device_may_wakeup(&dev->dev), NULL));

}



static int pnpacpi_resume(struct pnp_dev *dev)

{

	return acpi_bus_set_power((acpi_handle)dev->data, ACPI_STATE_D0);

}



static struct pnp_protocol pnpacpi_protocol = {

	.name	= "Plug and Play ACPI",

	.get	= pnpacpi_get_resources,

	.set	= pnpacpi_set_resources,

	.disable = pnpacpi_disable_resources,

	.suspend = pnpacpi_suspend,

	.resume = pnpacpi_resume,

};



static int __init pnpacpi_add_device(struct acpi_device *device)

include/linux/pnp.h

+4 −0
Original line number Diff line number Diff line
@@ -335,6 +335,10 @@ struct pnp_protocol { 
	int (*set)(struct pnp_dev *dev, struct pnp_resource_table *res);

	int (*disable)(struct pnp_dev *dev);



	/* protocol specific suspend/resume */

	int (*suspend)(struct pnp_dev *dev, pm_message_t state);

	int (*resume)(struct pnp_dev *dev);



	/* used by pnp layer only (look but don't touch) */

	unsigned char		number;		/* protocol number*/

	struct device		dev;		/* link to driver model */