projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 5823d089 AS |
1 | /* |
| 2 | * Intel MID platform PM support | |
| 3 | * | |
| 4 | * Copyright (C) 2016, Intel Corporation | |
| 5 | * | |
| 6 | * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com> | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or modify it | |
| 9 | * under the terms and conditions of the GNU General Public License, | |
| 10 | * version 2, as published by the Free Software Foundation. | |
| 11 | */ | |
| 12 | ||
| 13 | #include <linux/init.h> | |
| 14 | #include <linux/pci.h> | |
| 15 | ||
| 16 | #include <asm/cpu_device_id.h> | |
| 17 | #include <asm/intel-family.h> | |
| 18 | #include <asm/intel-mid.h> | |
| 19 | ||
| 20 | #include "pci.h" | |
| 21 | ||
| 22 | static bool mid_pci_power_manageable(struct pci_dev *dev) | |
| 23 | { | |
| 24 | return true; | |
| 25 | } | |
| 26 | ||
| 27 | static int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state) | |
| 28 | { | |
| 29 | return intel_mid_pci_set_power_state(pdev, state); | |
| 30 | } | |
| 31 | ||
| 32 | static pci_power_t mid_pci_choose_state(struct pci_dev *pdev) | |
| 33 | { | |
| 34 | return PCI_D3hot; | |
| 35 | } | |
| 36 | ||
| 37 | static int mid_pci_sleep_wake(struct pci_dev *dev, bool enable) | |
| 38 | { | |
| 39 | return 0; | |
| 40 | } | |
| 41 | ||
| 42 | static int mid_pci_run_wake(struct pci_dev *dev, bool enable) | |
| 43 | { | |
| 44 | return 0; | |
| 45 | } | |
| 46 | ||
| 47 | static bool mid_pci_need_resume(struct pci_dev *dev) | |
| 48 | { | |
| 49 | return false; | |
| 50 | } | |
| 51 | ||
| 52 | static struct pci_platform_pm_ops mid_pci_platform_pm = { | |
| 53 | .is_manageable = mid_pci_power_manageable, | |
| 54 | .set_state = mid_pci_set_power_state, | |
| 55 | .choose_state = mid_pci_choose_state, | |
| 56 | .sleep_wake = mid_pci_sleep_wake, | |
| 57 | .run_wake = mid_pci_run_wake, | |
| 58 | .need_resume = mid_pci_need_resume, | |
| 59 | }; | |
| 60 | ||
| 61 | #define ICPU(model) { X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, } | |
| 62 | ||
| 63 | static const struct x86_cpu_id lpss_cpu_ids[] = { | |
| f5fbf848 | 64 | ICPU(INTEL_FAM6_ATOM_MERRIFIELD), |
| 5823d089 AS |
65 | {} |
| 66 | }; | |
| 67 | ||
| 68 | static int __init mid_pci_init(void) | |
| 69 | { | |
| 70 | const struct x86_cpu_id *id; | |
| 71 | ||
| 72 | id = x86_match_cpu(lpss_cpu_ids); | |
| 73 | if (id) | |
| 74 | pci_set_platform_pm(&mid_pci_platform_pm); | |
| 75 | return 0; | |
| 76 | } | |
| 77 | arch_initcall(mid_pci_init); |