Commit a192aa92 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

ACPI / LPSS: Consolidate runtime PM and system sleep handling 



Move the LPSS-specific code from acpi_lpss_runtime_suspend()
and acpi_lpss_runtime_resume() into separate functions,
acpi_lpss_suspend() and acpi_lpss_resume(), respectively, and
make acpi_lpss_suspend_late() and acpi_lpss_resume_early() use
them too in order to unify the runtime PM and system sleep
handling in the LPSS driver.

Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent cbe25ce3

drivers/acpi/acpi_lpss.c

+34 −42
Original line number Diff line number Diff line
@@ -716,40 +716,6 @@ static void acpi_lpss_dismiss(struct device *dev) 
	acpi_dev_suspend(dev, false);

}



#ifdef CONFIG_PM_SLEEP

static int acpi_lpss_suspend_late(struct device *dev)

{

	struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev));

	int ret;



	ret = pm_generic_suspend_late(dev);

	if (ret)

		return ret;



	if (pdata->dev_desc->flags & LPSS_SAVE_CTX)

		acpi_lpss_save_ctx(dev, pdata);



	return acpi_dev_suspend(dev, device_may_wakeup(dev));

}



static int acpi_lpss_resume_early(struct device *dev)

{

	struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev));

	int ret;



	ret = acpi_dev_resume(dev);

	if (ret)

		return ret;



	acpi_lpss_d3_to_d0_delay(pdata);



	if (pdata->dev_desc->flags & LPSS_SAVE_CTX)

		acpi_lpss_restore_ctx(dev, pdata);



	return pm_generic_resume_early(dev);

}

#endif /* CONFIG_PM_SLEEP */



/* IOSF SB for LPSS island */

#define LPSS_IOSF_UNIT_LPIOEP		0xA0

#define LPSS_IOSF_UNIT_LPIO1		0xAB
@@ -835,19 +801,15 @@ static void lpss_iosf_exit_d3_state(void) 
	mutex_unlock(&lpss_iosf_mutex);

}



static int acpi_lpss_runtime_suspend(struct device *dev)

static int acpi_lpss_suspend(struct device *dev, bool wakeup)

{

	struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev));

	int ret;



	ret = pm_generic_runtime_suspend(dev);

	if (ret)

		return ret;



	if (pdata->dev_desc->flags & LPSS_SAVE_CTX)

		acpi_lpss_save_ctx(dev, pdata);



	ret = acpi_dev_suspend(dev, true);

	ret = acpi_dev_suspend(dev, wakeup);



	/*

	 * This call must be last in the sequence, otherwise PMC will return
@@ -860,7 +822,7 @@ static int acpi_lpss_runtime_suspend(struct device *dev) 
	return ret;

}



static int acpi_lpss_runtime_resume(struct device *dev)

static int acpi_lpss_resume(struct device *dev)

{

	struct lpss_private_data *pdata = acpi_driver_data(ACPI_COMPANION(dev));

	int ret;
@@ -881,7 +843,37 @@ static int acpi_lpss_runtime_resume(struct device *dev) 
	if (pdata->dev_desc->flags & LPSS_SAVE_CTX)

		acpi_lpss_restore_ctx(dev, pdata);



	return pm_generic_runtime_resume(dev);

	return 0;

}



#ifdef CONFIG_PM_SLEEP

static int acpi_lpss_suspend_late(struct device *dev)

{

	int ret = pm_generic_suspend_late(dev);



	return ret ? ret : acpi_lpss_suspend(dev, device_may_wakeup(dev));

}



static int acpi_lpss_resume_early(struct device *dev)

{

	int ret = acpi_lpss_resume(dev);



	return ret ? ret : pm_generic_resume_early(dev);

}

#endif /* CONFIG_PM_SLEEP */



static int acpi_lpss_runtime_suspend(struct device *dev)

{

	int ret = pm_generic_runtime_suspend(dev);



	return ret ? ret : acpi_lpss_suspend(dev, true);

}



static int acpi_lpss_runtime_resume(struct device *dev)

{

	int ret = acpi_lpss_resume(dev);



	return ret ? ret : pm_generic_runtime_resume(dev);

}

#endif /* CONFIG_PM */

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