Re: [RFC PATCH 5/6] PCI: Move acpi_dev_run_wake to acpi core

[Rafael J. Wysocki]

On Monday, February 13, 2012, Lin Ming wrote:
> acpi_dev_run_wake is a generic function which can be used by
> other subsystem too. Rename it to acpi_pm_device_run_wake, to be
> consistent with acpi_pm_device_sleep_wake.
> 
> Then move it to acpi core.
> 
> Signed-off-by: Lin Ming <ming.m.lin@xxxxxxxxx>

OK, why not.

Acked-by: Rafael J. Wysocki <rjw@xxxxxxx>

> ---
>  drivers/acpi/sleep.c    |   35 +++++++++++++++++++++++++++++++++++
>  drivers/pci/pci-acpi.c  |   40 +++-------------------------------------
>  include/acpi/acpi_bus.h |    5 +++++
>  3 files changed, 43 insertions(+), 37 deletions(-)
> 
> diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
> index ca191ff..00fa664 100644
> --- a/drivers/acpi/sleep.c
> +++ b/drivers/acpi/sleep.c
> @@ -17,6 +17,7 @@
>  #include <linux/suspend.h>
>  #include <linux/reboot.h>
>  #include <linux/acpi.h>
> +#include <linux/pm_runtime.h>
>  
>  #include <asm/io.h>
>  
> @@ -730,6 +731,40 @@ int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p)
>  
>  #ifdef CONFIG_PM_SLEEP
>  /**
> + * acpi_pm_device_run_wake - Enable/disable wake-up for given device.
> + * @phys_dev: Device to enable/disable the platform to wake-up the system for.
> + * @enable: Whether enable or disable the wake-up functionality.
> + *
> + * Find the ACPI device object corresponding to @pci_dev and try to
> + * enable/disable the GPE associated with it.
> + */
> +int acpi_pm_device_run_wake(struct device *phys_dev, bool enable)
> +{
> +	struct acpi_device *dev;
> +	acpi_handle handle;
> +
> +	if (!device_run_wake(phys_dev))
> +		return -EINVAL;
> +
> +	handle = DEVICE_ACPI_HANDLE(phys_dev);
> +	if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &dev))) {
> +		dev_dbg(phys_dev, "ACPI handle has no context in %s!\n",
> +			__func__);
> +		return -ENODEV;
> +	}
> +
> +	if (enable) {
> +		acpi_enable_wakeup_device_power(dev, ACPI_STATE_S0);
> +		acpi_enable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number);
> +	} else {
> +		acpi_disable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number);
> +		acpi_disable_wakeup_device_power(dev);
> +	}
> +
> +	return 0;
> +}
> +
> +/**
>   *	acpi_pm_device_sleep_wake - enable or disable the system wake-up
>   *                                  capability of given device
>   *	@dev: device to handle
> diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
> index 060fd22..0f150f2 100644
> --- a/drivers/pci/pci-acpi.c
> +++ b/drivers/pci/pci-acpi.c
> @@ -277,40 +277,6 @@ static int acpi_pci_sleep_wake(struct pci_dev *dev, bool enable)
>  	return 0;
>  }
>  
> -/**
> - * acpi_dev_run_wake - Enable/disable wake-up for given device.
> - * @phys_dev: Device to enable/disable the platform to wake-up the system for.
> - * @enable: Whether enable or disable the wake-up functionality.
> - *
> - * Find the ACPI device object corresponding to @pci_dev and try to
> - * enable/disable the GPE associated with it.
> - */
> -static int acpi_dev_run_wake(struct device *phys_dev, bool enable)
> -{
> -	struct acpi_device *dev;
> -	acpi_handle handle;
> -
> -	if (!device_run_wake(phys_dev))
> -		return -EINVAL;
> -
> -	handle = DEVICE_ACPI_HANDLE(phys_dev);
> -	if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &dev))) {
> -		dev_dbg(phys_dev, "ACPI handle has no context in %s!\n",
> -			__func__);
> -		return -ENODEV;
> -	}
> -
> -	if (enable) {
> -		acpi_enable_wakeup_device_power(dev, ACPI_STATE_S0);
> -		acpi_enable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number);
> -	} else {
> -		acpi_disable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number);
> -		acpi_disable_wakeup_device_power(dev);
> -	}
> -
> -	return 0;
> -}
> -
>  static void acpi_pci_propagate_run_wake(struct pci_bus *bus, bool enable)
>  {
>  	while (bus->parent) {
> @@ -318,14 +284,14 @@ static void acpi_pci_propagate_run_wake(struct pci_bus *bus, bool enable)
>  
>  		if (bridge->pme_interrupt)
>  			return;
> -		if (!acpi_dev_run_wake(&bridge->dev, enable))
> +		if (!acpi_pm_device_run_wake(&bridge->dev, enable))
>  			return;
>  		bus = bus->parent;
>  	}
>  
>  	/* We have reached the root bus. */
>  	if (bus->bridge)
> -		acpi_dev_run_wake(bus->bridge, enable);
> +		acpi_pm_device_run_wake(bus->bridge, enable);
>  }
>  
>  static int acpi_pci_run_wake(struct pci_dev *dev, bool enable)
> @@ -333,7 +299,7 @@ static int acpi_pci_run_wake(struct pci_dev *dev, bool enable)
>  	if (dev->pme_interrupt)
>  		return 0;
>  
> -	if (!acpi_dev_run_wake(&dev->dev, enable))
> +	if (!acpi_pm_device_run_wake(&dev->dev, enable))
>  		return 0;
>  
>  	acpi_pci_propagate_run_wake(dev->bus, enable);
> diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
> index 32fb899..2d556e3 100644
> --- a/include/acpi/acpi_bus.h
> +++ b/include/acpi/acpi_bus.h
> @@ -394,8 +394,13 @@ static inline int acpi_pm_device_sleep_state(struct device *d, int *p)
>  #endif
>  
>  #ifdef CONFIG_PM_SLEEP
> +int acpi_pm_device_run_wake(struct device *, bool);
>  int acpi_pm_device_sleep_wake(struct device *, bool);
>  #else
> +static inline int acpi_pm_device_run_wake(struct device *dev, bool enable)
> +{
> +	return -ENODEV;
> +}
>  static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
>  {
>  	return -ENODEV;
> 

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