1 // SPDX-License-Identifier: GPL-2.0
3 * Intel MID platform PM support
5 * Copyright (C) 2016, Intel Corporation
7 * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
10 #include <linux/init.h>
11 #include <linux/pci.h>
13 #include <asm/cpu_device_id.h>
14 #include <asm/intel-family.h>
15 #include <asm/intel-mid.h>
19 static bool mid_pci_power_manageable(struct pci_dev *dev)
24 static int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state)
26 return intel_mid_pci_set_power_state(pdev, state);
29 static pci_power_t mid_pci_get_power_state(struct pci_dev *pdev)
31 return intel_mid_pci_get_power_state(pdev);
34 static pci_power_t mid_pci_choose_state(struct pci_dev *pdev)
39 static int mid_pci_wakeup(struct pci_dev *dev, bool enable)
44 static bool mid_pci_need_resume(struct pci_dev *dev)
49 static const struct pci_platform_pm_ops mid_pci_platform_pm = {
50 .is_manageable = mid_pci_power_manageable,
51 .set_state = mid_pci_set_power_state,
52 .get_state = mid_pci_get_power_state,
53 .choose_state = mid_pci_choose_state,
54 .set_wakeup = mid_pci_wakeup,
55 .need_resume = mid_pci_need_resume,
59 * This table should be in sync with the one in
60 * arch/x86/platform/intel-mid/pwr.c.
62 static const struct x86_cpu_id lpss_cpu_ids[] = {
63 X86_MATCH_INTEL_FAM6_MODEL(ATOM_SALTWELL_MID, NULL),
64 X86_MATCH_INTEL_FAM6_MODEL(ATOM_SILVERMONT_MID, NULL),
68 static int __init mid_pci_init(void)
70 const struct x86_cpu_id *id;
72 id = x86_match_cpu(lpss_cpu_ids);
74 pci_set_platform_pm(&mid_pci_platform_pm);
77 arch_initcall(mid_pci_init);