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1// SPDX-License-Identifier: GPL-2.02/*3 * Intel MID platform PM support4 *5 * Copyright (C) 2016, Intel Corporation6 *7 * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>8 */9 10#include <linux/init.h>11#include <linux/pci.h>12 13#include <asm/cpu_device_id.h>14#include <asm/intel-family.h>15#include <asm/intel-mid.h>16 17#include "pci.h"18 19static bool pci_mid_pm_enabled __read_mostly;20 21bool pci_use_mid_pm(void)22{23 return pci_mid_pm_enabled;24}25 26int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state)27{28 return intel_mid_pci_set_power_state(pdev, state);29}30 31pci_power_t mid_pci_get_power_state(struct pci_dev *pdev)32{33 return intel_mid_pci_get_power_state(pdev);34}35 36/*37 * This table should be in sync with the one in38 * arch/x86/platform/intel-mid/pwr.c.39 */40static const struct x86_cpu_id lpss_cpu_ids[] = {41 X86_MATCH_VFM(INTEL_ATOM_SALTWELL_MID, NULL),42 X86_MATCH_VFM(INTEL_ATOM_SILVERMONT_MID, NULL),43 {}44};45 46static int __init mid_pci_init(void)47{48 const struct x86_cpu_id *id;49 50 id = x86_match_cpu(lpss_cpu_ids);51 if (id)52 pci_mid_pm_enabled = true;53 54 return 0;55}56arch_initcall(mid_pci_init);57