0847684cfc
After previous changes it is not necessary to distinguish between device wakeup for run time and device wakeup from system sleep states any more, so rework the PCI device wakeup settings code accordingly. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com>
83 lines
1.8 KiB
C
83 lines
1.8 KiB
C
/*
|
|
* Intel MID platform PM support
|
|
*
|
|
* Copyright (C) 2016, Intel Corporation
|
|
*
|
|
* Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/pci.h>
|
|
|
|
#include <asm/cpu_device_id.h>
|
|
#include <asm/intel-family.h>
|
|
#include <asm/intel-mid.h>
|
|
|
|
#include "pci.h"
|
|
|
|
static bool mid_pci_power_manageable(struct pci_dev *dev)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state)
|
|
{
|
|
return intel_mid_pci_set_power_state(pdev, state);
|
|
}
|
|
|
|
static pci_power_t mid_pci_get_power_state(struct pci_dev *pdev)
|
|
{
|
|
return intel_mid_pci_get_power_state(pdev);
|
|
}
|
|
|
|
static pci_power_t mid_pci_choose_state(struct pci_dev *pdev)
|
|
{
|
|
return PCI_D3hot;
|
|
}
|
|
|
|
static int mid_pci_wakeup(struct pci_dev *dev, bool enable)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static bool mid_pci_need_resume(struct pci_dev *dev)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static const struct pci_platform_pm_ops mid_pci_platform_pm = {
|
|
.is_manageable = mid_pci_power_manageable,
|
|
.set_state = mid_pci_set_power_state,
|
|
.get_state = mid_pci_get_power_state,
|
|
.choose_state = mid_pci_choose_state,
|
|
.set_wakeup = mid_pci_wakeup,
|
|
.need_resume = mid_pci_need_resume,
|
|
};
|
|
|
|
#define ICPU(model) { X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, }
|
|
|
|
/*
|
|
* This table should be in sync with the one in
|
|
* arch/x86/platform/intel-mid/pwr.c.
|
|
*/
|
|
static const struct x86_cpu_id lpss_cpu_ids[] = {
|
|
ICPU(INTEL_FAM6_ATOM_PENWELL),
|
|
ICPU(INTEL_FAM6_ATOM_MERRIFIELD),
|
|
{}
|
|
};
|
|
|
|
static int __init mid_pci_init(void)
|
|
{
|
|
const struct x86_cpu_id *id;
|
|
|
|
id = x86_match_cpu(lpss_cpu_ids);
|
|
if (id)
|
|
pci_set_platform_pm(&mid_pci_platform_pm);
|
|
return 0;
|
|
}
|
|
arch_initcall(mid_pci_init);
|